WO2023199533A1 - Translucent member and multilayer translucent body - Google Patents

Translucent member and multilayer translucent body Download PDF

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Publication number
WO2023199533A1
WO2023199533A1 PCT/JP2022/029397 JP2022029397W WO2023199533A1 WO 2023199533 A1 WO2023199533 A1 WO 2023199533A1 JP 2022029397 W JP2022029397 W JP 2022029397W WO 2023199533 A1 WO2023199533 A1 WO 2023199533A1
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WO
WIPO (PCT)
Prior art keywords
light
pair
plates
hollow
transmitting
Prior art date
Application number
PCT/JP2022/029397
Other languages
French (fr)
Japanese (ja)
Inventor
拓郎 中村
健史 井原
正人 山本
Original Assignee
株式会社竹中工務店
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社竹中工務店 filed Critical 株式会社竹中工務店
Publication of WO2023199533A1 publication Critical patent/WO2023199533A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/54—Slab-like translucent elements
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together

Definitions

  • the present disclosure relates to a light-transmitting member and a multilayer light-transmitting body.
  • JP-A-7-220662 relates to an image element that requires internal pressure to be lower than atmospheric pressure.
  • This Japanese Patent Application Laid-Open No. 7-220662 discloses a technology related to a lightweight and thin planar image element.
  • Japanese Patent Laid-Open No. 2006-274662 discloses a technique related to a glass plate fixing structure in which both ends of a glass plate on which a compressive force is applied are fitted and fixed in grooves of a fixing metal member on the frame body side. ing. A cushioning material is sandwiched between both surfaces of both ends of the glass plate and the groove portion.
  • Japanese Patent Laid-Open No. 2007-198016 discloses a technique related to a glass panel fixing structure that fixes a glass panel inside a frame or frame.
  • JP 2018-178372A discloses a technology related to a light-transmitting member using airgel, particularly a light-transmitting member used as a building material such as an exterior wall panel.
  • This light-transmitting member utilizes an airgel that includes a first light-transmitting plate, a second light-transmitting plate, and a semi-transparent region defined between the first light-transmitting plate and the second light-transmitting plate.
  • the semi-transparent region is formed by filling at least semi-transparent particles of airgel between the first light-transmitting plate and the second light-transmitting plate.
  • the average particle diameter of the semi-transparent particles is in the range of 0.05 to 0.5 mm.
  • the purpose of the present disclosure is to suppress the pair of light-transmitting plate materials from being stuck to the outside when filling airgel between the pair of light-transmitting plate materials to form an airgel layer.
  • the light-transmitting member includes: a pair of light-transmitting plates arranged to face each other; an airgel layer formed by airgel filled between the pair of the light-transmitting plates; The outer edges between the translucent plates are sealed, and the side edges of the pair of translucent plates in the width direction are held so as to be inclined inward in the thickness direction, and the pair of translucent plates are removed from the airgel layer.
  • a holding member that suppresses the pair of light-transmitting plates from becoming loose due to lateral pressure acting on the light-transmitting plates.
  • the side ends of the pair of translucent plates in the width direction are held by the holding member in a state in which they are inclined inward in the thickness direction. Therefore, in a state where the pair of light-transmitting plates are not filled with airgel, they are curved inward in the thickness direction from each side end toward the center in the width direction.
  • the first aspect when forming an airgel layer by filling airgel between a pair of light-transmitting plate materials, compared to a case where the side end portions of the pair of light-transmitting plate materials are not inclined, This prevents the pair of translucent plates from extending outward. Therefore, overfilling of the airgel between the pair of translucent plates is prevented or suppressed.
  • the translucent members can be transported or moved before filling the space between the pair of translucent plates with airgel. When doing so, the shape of the pair of light-transmitting plates is easily maintained.
  • the airgel can be removed from the side edges of the pair of translucent plates in the width direction.
  • a compressive force is applied to the layer. This compressive force suppresses vibrations and the like of the airgel layer, thereby preventing or suppressing sedimentation of the airgel due to vibrations and the like.
  • the light-transmitting member according to a second aspect is the light-transmitting member according to the first aspect, in which the holding member includes a frame portion along an end surface of the side end portion of the light-transmitting plate material, and an outer end of the frame portion. an outer claw part that protrudes inward in the thickness direction of the light-transmitting plate material from the part thereof and is disposed along the outer surface of the side end part, and the holding member It has greater rigidity.
  • the outer claw portion of the holding member projects from the outer end of the frame portion in an inclined state toward the inner side in the thickness direction of the translucent plate material.
  • the holding member has greater rigidity than the light-transmitting plate material. Therefore, when lateral pressure is applied from the airgel layer to the outer claw portion, the outer claw portion is prevented from falling down. Therefore, the holding member can continue to hold the pair of translucent plate materials in a state in which the side ends in the width direction are mutually inclined inward in the thickness direction.
  • the outer claw portion has greater rigidity than the light-transmitting plate material.
  • the outer claw portions protrude from the outer end portions on both sides of the frame portion, and the side ends of the pair of light-transmitting plate materials. each along the outer surface of the section.
  • the holding member is inclined from the inside of the outer end of the frame toward the inside in the thickness direction of the light-transmitting plate material. It has an inner claw part that protrudes in the state and is arranged along the inner surface of the side end part.
  • the inner claw portion of the holding member projects from the inner side of the outer end portion of the frame portion in an inclined state toward the inner side in the thickness direction of the translucent plate material.
  • the holding member has greater rigidity than the light-transmitting plate material. Therefore, when lateral pressure acts on the outer claw part and the inner claw part from the airgel layer, the outer claw part and the inner claw part are prevented from falling down. Therefore, the holding member can continue to hold the pair of translucent plate materials in a state in which the side ends in the width direction are mutually inclined inward in the thickness direction.
  • the outer claw portion and the inner claw portion have greater rigidity than the light-transmitting plate material.
  • the length of the outer claw portion in the protruding direction is greater than or equal to the length of the inner claw portion in the protruding direction.
  • the length of the outer claw portion in the protruding direction is the same as the length of the inner claw portion in the protruding direction.
  • the inner claw portion protrudes from inside the outer end portions on both sides of the frame portion, and are respectively disposed along the inner surface of the side edges.
  • a light-transmitting member according to a tenth aspect is the light-transmitting member according to the first aspect, in which the pair of light-transmitting plate materials are arranged outward in the thickness direction from the side end portions toward the center portion in the width direction.
  • a light-transmitting member according to an eleventh aspect is the light-transmitting member according to the first aspect, in which the holding members each hold the side end portions on both sides in the width direction of the pair of light-transmitting plate materials.
  • a light-transmitting member according to a twelfth aspect is the light-transmitting member according to the first aspect, in which the light-transmitting plate material has a plurality of hollow portions filled with airgel.
  • the light-transmitting member according to a thirteenth aspect is the light-transmitting member according to the fifth aspect, wherein the light-transmitting plate material is provided between a pair of polycarbonate plates facing each other and a pair of the polycarbonate plates, and the light-transmitting member is provided between a pair of polycarbonate plates facing each other, and and a plurality of ribs that connect the polycarbonate plates and form a plurality of hollow parts between the pair of polycarbonate plates, and the hollow parts are filled with airgel.
  • the multilayer transparent body according to the fourteenth aspect includes a plurality of transparent plates that face each other and are closed between edges, and a hollow layer between the adjacent transparent plates with a space between the transparent plates.
  • the light-transmitting member according to any one of the first to thirteenth aspects is provided.
  • the fourteenth aspect since the light-transmitting member in which the airgel layer is formed between the pair of light-transmitting plates is provided in the hollow layer between the adjacent light-transmitting plates, the heat insulation of the multilayer light-transmitting body is improved. will improve. Further, the holding member suppresses the pair of light-transmitting plates from becoming loose due to lateral pressure acting on the pair of light-transmitting plates from the airgel layer. This prevents contact between the light-transmitting plate and the light-transmitting plate material, thereby improving the heat insulation effect of the multilayer light-transmitting body.
  • a multi-layer transparent body according to a fifteenth aspect is a multi-layer transparent body according to a fourteenth aspect, wherein the transparent plate material and the transparent plate are glass plates, and the thickness of the transparent plate material is The thickness is equal to or less than the thickness of the transparent plate.
  • FIG. 2 is a cross-sectional view showing a horizontal cross section of the central portion in the Z direction of the multilayer light transmitting body according to the first embodiment.
  • FIG. 2 is a cross-sectional view showing a vertical cross section of the central portion in the X direction of the multilayer transparent body according to the first embodiment.
  • It is a sectional view of the holding member which holds the side edge part of the hollow polycarbonate board in the X direction in the first embodiment.
  • FIG. 1 is a cross-sectional view showing a horizontal cross section of the central portion in the Z direction of the multilayer light transmitting body according to the first embodiment.
  • FIG. 2 is a cross-sectional view showing a vertical cross section of the central portion in the X direction of the multilayer transparent body according to the first embodiment.
  • It is a sectional view of the holding member which holds the side edge part of the hollow poly
  • FIG. 2 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates before filling airgel between the pair of hollow polycarbonate plates in the manufacturing process of the light-transmitting member according to the first embodiment.
  • FIG. 2 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates after filling airgel between the pair of hollow polycarbonate plates in the manufacturing process of the light-transmitting member according to the first embodiment.
  • FIG. 3 is a cross-sectional view showing a vertical cross section of the central portion of the pair of hollow polycarbonate plates in the X direction before filling the space between the pair of hollow polycarbonate plates with airgel in the manufacturing process of the light-transmitting member according to the first embodiment.
  • the X direction of the pair of hollow polycarbonate plates is FIG. 3 is a cross-sectional view showing a vertical cross section of the central portion. It is a graph showing the relationship between the bending moment acting on the hollow polycarbonate plate and the rotation angle curve of the side end portion of the hollow polycarbonate plate in the first embodiment.
  • FIG. 7 is a graph showing an elastic region of the graph shown in FIG. 6.
  • FIG. 8 is an explanatory diagram illustrating conditions for calculation examples of the graphs shown in FIGS. 6 and 7.
  • FIG. 7 is a cross-sectional view showing a horizontal cross section of a central portion in the Z direction of a multilayer transparent body according to a second embodiment.
  • FIG. 7 is a cross-sectional view showing a vertical cross section of the central portion in the X direction of the multilayer transparent body according to the second embodiment. It is a sectional view of the holding member which holds the side edge part of the hollow polycarbonate board in the X direction in a second embodiment.
  • FIG. 7 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates before filling airgel between the pair of hollow polycarbonate plates in the manufacturing process of the light-transmitting member according to the second embodiment.
  • FIG. 7 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates after filling the space between the pair of hollow polycarbonate plates with airgel in the manufacturing process of the light-transmitting member according to the second embodiment.
  • FIG. 3 is a cross-sectional view showing a vertical cross section.
  • FIG. 3 is a cross-sectional view showing a horizontal cross section of the central portion of a pair of hollow polycarbonate plates in the Z direction before filling the space between the pair of hollow polycarbonate plates with airgel in the manufacturing process of a light-transmitting member according to a reference example.
  • FIG. 3 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates after filling airgel between the pair of hollow polycarbonate plates in the manufacturing process of a light-transmitting member according to a reference example.
  • It is a perspective view of a hollow polycarbonate board in a first embodiment and a second embodiment.
  • the multilayer transparent body of the first embodiment will be explained. Note that two horizontal directions orthogonal to each other are referred to as the X direction and the Y direction, and the respective directions are indicated by arrows X and Y.
  • the vertical direction perpendicular to the X direction and the Y direction is defined as the Z direction, and this direction is indicated by an arrow Z.
  • the multilayer light-transmitting body 12, which will be described later, is installed such that the out-of-plane direction of the glass plate 52, which is an example of a light-transmitting plate, is the Y direction.
  • the structure of the multilayer transparent body 12 will be explained based on this state.
  • FIG. 1 is a cross-sectional view showing a horizontal cross section of a vertically central portion of a multilayer transparent body.
  • FIG. 2 is a sectional view showing a vertical cross section of the central portion of the multilayer transparent body in the X direction.
  • the multilayer light-transmitting body 12 shown in FIGS. 1 and 2 includes two glass plates 52 as an example of light-transmitting plates, and a light-transmitting member 10 provided between the two glass plates 52. ing.
  • the glass plate 52 and the light-transmitting member 10 have a rectangular shape when viewed from the Y direction.
  • the multilayer transparent body 12 of this embodiment is attached to the window frame 16.
  • the object to which the multilayer transparent body 12 is attached is not limited to the window frame 16.
  • a hollow layer 55 is formed between the two glass plates 52.
  • a spacer 21 is sandwiched between the edges 53 of the two glass plates 52.
  • the edge 53 of the glass plate 52 and the spacer 21 are bonded together with a butyl tape material 22.
  • the method of joining the edge 53 of the glass plate 52 and the spacer 21 can be changed as appropriate.
  • the outside of the spacer 21 between the edges 53 of the two glass plates 52 is closed with a silicone sealing material 31 as an example of a closing material.
  • the spacer 21 of this embodiment is hollow inside.
  • the hollow portion of the spacer 21 is filled with a desiccant (not shown).
  • the structure of the spacer 21 can be changed as appropriate.
  • a light-transmitting member 10 is provided in the hollow layer 55.
  • the light-transmitting member 10 includes two hollow polycarbonate plates 100 as an example of light-transmitting resin plates, a holding member 150 (see FIGS. 2 and 3B), a holding member 151 (see FIGS. 1 and 3A),
  • the airgel layer 130 is configured to include an airgel layer 130.
  • the airgel layer 130 is formed by filling airgel N between two hollow polycarbonate plates 100.
  • the hollow polycarbonate plate 100 of this embodiment has a rectangular shape when viewed from the Y direction.
  • the hollow polycarbonate plate 100 has two polycarbonate plates 102 facing each other and a plurality of ribs 104 provided between the two polycarbonate plates 102.
  • a plurality of ribs 104 connect two polycarbonate plates 102.
  • These polycarbonate plates 102 and ribs 104 form a plurality of hollow portions 106 aligned in a predetermined direction.
  • the hollow portion 106 of the hollow polycarbonate plate 100 is filled with airgel M.
  • the holding member 151 holds and seals the side edges 110X of the two hollow polycarbonate plates 100 in the width direction along the X direction, and the outer edge between the two hollow polycarbonate plates 100.
  • the portion 132X is sealed.
  • the holding member 151 shown in FIGS. 1 and 3A includes a frame portion 151C, two outer claw portions 151B protruding from both outer ends of the frame portion 151C, and inner sides of the two outer claw portions 151B in the frame portion 151C. It has two inner claw parts 151A protruding from the inner claw part 151A.
  • the frame portion 151C is provided along the end surface 112X of the side end portion 110X of the hollow polycarbonate plate 100.
  • the outer claw portions 151B are provided along the outer surfaces 113X of the side ends 110X of the two hollow polycarbonate plates 100, respectively.
  • the inner claw portions 151A are provided along the inner surfaces 114X of the side end portions 110X of the two hollow polycarbonate plates 100, respectively.
  • the outer claw portion 151B and the inner claw portion 151A are inclined toward the inner side in the thickness direction of the hollow polycarbonate plate 100, that is, toward the airgel layer 130 side.
  • the holding member 151 has greater rigidity than the hollow polycarbonate plate 100.
  • the frame portion 151C has greater rigidity than the outer claw portion 151B and the inner claw portion 151A.
  • the side ends 110X of the pair of hollow polycarbonate plates 100 are held by a holding member 151 in a state where they are inclined toward the inner side in the thickness direction (toward the airgel layer 130 side).
  • the rigidity of the hollow polycarbonate plate 100 is the bending rigidity when the hollow polycarbonate plate 100 is bent in the Y direction using the pin-fixed (pin-supported) side ends 110X on both sides in the X direction as fulcrums.
  • the degree of curvature of the hollow polycarbonate plate 100 is illustrated to be larger than the actual degree of curvature in order to make it easier to understand.
  • the holding member 150 holds and seals the side edges 110Z of the two hollow polycarbonate plates 100 in the width direction along the Z direction, and also seals the outer edge between the two hollow polycarbonate plates 100.
  • the portion 132Z is sealed.
  • the holding member 150 shown in FIGS. 2 and 3B includes a frame portion 150C, two outer claw portions 150B protruding from both outer ends of the frame portion 150C, and inner sides of the two outer claw portions 150B on the frame portion 150C. It has two inner claw parts 150A protruding from the inner claw part 150A.
  • the outer claw portion 150B and the inner claw portion 150A are inclined inward in the thickness direction of the outer claw portion 150B and the inner claw portion 150A, that is, toward the airgel layer 130 side.
  • the holding member 150 has greater rigidity than the hollow polycarbonate plate 100.
  • the frame portion 150C has greater rigidity than the outer claw portion 150B and the inner claw portion 150A.
  • the side ends 110Z of the pair of hollow polycarbonate plates 100 are held by the holding member 150 in a state where they are inclined toward the inner side in the thickness direction (toward the airgel layer 130 side).
  • the rigidity of the hollow polycarbonate plate 100 is the bending rigidity when the hollow polycarbonate plate 100 is bent in the Y direction using the pin-fixed (pin-supported) side ends 110X on both sides in the Z direction as fulcrums.
  • FIGS. 1 and 2 side edges 110X and 110Z of the two hollow polycarbonate plates 100 are inclined inward.
  • an airgel layer 130 is formed by airgel N filled between two hollow polycarbonate plates 100. Due to the lateral pressure exerted from the airgel layer 130 on the inner surfaces of the two hollow polycarbonate plates 100, the two hollow polycarbonate plates 100 extend outward in the thickness direction from the side edges 110X and 110Z toward the center ( bulging). However, a gap L is formed between the hollow polycarbonate plate 100 and the glass plate 52. Also in the vertical cross section shown in FIG.
  • the two hollow polycarbonate plates 100 bulge outward in the thickness direction due to the lateral pressure acting on the two hollow polycarbonate plates 100 from the airgel layer 130.
  • the distance between the two hollow polycarbonate plates 100 is larger at the bottom and becomes smaller toward the top.
  • a gap L is formed between the hollow polycarbonate plate 100 and the glass plate 52.
  • the gap between the joint between the holding member 150 and the holding member 151 is filled with a sealant such as silicone, a foam material such as open-cell urethane sponge, a hot melt adhesive, etc.
  • a sealant such as silicone, a foam material such as open-cell urethane sponge, a hot melt adhesive, etc.
  • the gap is filled in and sealed to such an extent that the airgel N does not leak out from the gap.
  • the side ends 110X and 110Z of the hollow polycarbonate plate 100 are fixed to the holding members 150 and 151 by friction.
  • the side ends 110X, 110Z of the hollow polycarbonate plate 100 may be fixed to the holding members 150, 151 using an adhesive such as a silicone sealant.
  • the holding members 150 and 151 seal the outer edge of the light-transmitting member 10.
  • the lengths of the outer claw parts 150B and 151B in the protruding direction and the lengths of the inner claw parts 150A and 151A in the protruding direction are the same in this embodiment.
  • the lengths of the outer claws 150B, 151B in the protruding direction and the lengths of the inner claws 150A, 151A in the protruding direction may be different.
  • it is desirable that the length of the outer claw portions 150B, 151B in the protruding direction is greater than or equal to the length of the inner claw portions 150A, 151A in the protruding direction.
  • the length of the outer claw portions 150B, 151B in the protruding direction is the same as the length of the inner claw portions 150A, 151A in the protruding direction.
  • the lengths of the outer claws 150B, 151B in the protruding direction and the lengths of the inner claws 150A, 151A in the protruding direction are lengths (hanging allowances) for holding the side ends 110X, 110Z.
  • the airgel is a porous, low-density structure in the form of granules or powder obtained by replacing the solvent contained in the gel with gas by a supercritical drying method or the like.
  • airgel M and N may additionally contain particle components such as silica fume, spherical silica particles, hollow silica, and expanded polystyrene particles.
  • the hollow polycarbonate plate 100 is installed with the direction along the ribs 104 (see FIG. 15), that is, the axial direction of the cylindrical hollow part 106 (see FIG. 15) being the vertical direction.
  • holding members 150 and 151 are joined to the side edges 110X and 110Z of the hollow polycarbonate plate 100, excluding the upper side edge 110Z of the hollow polycarbonate plate 100, and the lower opening of the hollow portion 106 and the airgel layer 130 is Seal the ends.
  • the airgel M is filled into the hollow part 106 from the opening above the hollow part 106 of the hollow polycarbonate plate 100. Note that when filling the hollow portion 106 with the airgel M, vibration may be applied to the hollow polycarbonate plate 100.
  • FIG. 4A is a horizontal cross section of the center portion in the Z direction of the hollow polycarbonate plate 100 in the above state.
  • FIG. 5A is a vertical cross section of the central portion in the X direction of the hollow polycarbonate plate 100 in the above state. Note that when the holding member 150 is provided on the upper side of the hollow polycarbonate plate 100 shown in FIG. 5A, although the curvature of the hollow polycarbonate plate 100 may be different, the hollow polycarbonate plate 100 is It has the same shape as the hollow polycarbonate plate 100 shown in FIG. 4A in that it curves inward in the thickness direction as it goes toward the end.
  • airgel N is filled between the two hollow polycarbonate plates 100, and a holding member 150 is joined to the upper side end 110Z of the hollow polycarbonate plate 100 to close the upper open end of the hollow part 106 and the airgel layer 130. block. Note that when filling airgel N between two hollow polycarbonate plates 100, vibration may be applied to the hollow polycarbonate plates 100.
  • FIG. 4B is a horizontal cross section of the center portion in the Z direction of the hollow polycarbonate plate 100 in the above state.
  • FIG. 5B is a vertical cross section of the central portion in the X direction of the hollow polycarbonate plate 100 in the above state.
  • the side end portions 110X and 110Z of the pair of hollow polycarbonate plates 100 are held by holding members 150 and 151 in a mutually inclined state in the thickness direction.
  • the pair of hollow polycarbonate plates 100 curves inward in the thickness direction from the side edges 110X and 110Z toward the center in the width direction. (See Figure 4A).
  • the hollow polycarbonate plate 100 is prevented from bulging outward. Therefore, overfilling of the airgel N between the pair of hollow polycarbonate plates 100 is prevented or suppressed. Furthermore, since the hollow polycarbonate plate 100 is prevented from coming close to or in contact with the glass plate 52, the distance L between the hollow polycarbonate plate 100 and the glass plate 52 is secured.
  • the shape of the pair of hollow polycarbonate plates 100 is easily maintained.
  • FIGS. 14A and 14B a case where a pair of hollow polycarbonate plates 100 are held by a holding member 950 according to a comparative example will be described.
  • the outer claw portion 950B and the inner claw portion 950A are not inclined.
  • the two hollow polycarbonate plates 100 are parallel to each other.
  • the lateral pressure acting on the two hollow polycarbonate plates 100 from the airgel layer 130 causes the two hollow polycarbonate plates 100 to The central portions in the width direction are curved away from each other.
  • the amount of protrusion of the two hollow polycarbonate plates 100 is illustrated larger than in reality.
  • the amount of airgel N filled into the two hollow polycarbonate plates 100 increases. That is, the two hollow polycarbonate plates 100 are overfilled with airgel N. Moreover, since the center portion of the hollow polycarbonate plate 100 in the width direction is close to or in contact with the glass plate 52 (see FIG. 1), the distance L between the hollow polycarbonate plate 100 and the glass plate 52 is not secured.
  • the side ends 110X, 110Z of the hollow polycarbonate plate 100 are held in a state inclined inward in the thickness direction by the holding members 150, 151.
  • the hollow polycarbonate plate 100 of this embodiment curves in the Y direction using the pin-fixed side edges 110Z on both sides in the Z direction as fulcrums, and also curves on both side edges 110X in the X direction that are pin-fixed as fulcrums. It curves in the Y direction. Therefore, the hollow polycarbonate plate 100 has a complicated curved shape in which ridge lines are formed from the corners to the center. Furthermore, a plurality of ribs 104 along the Z direction are formed inside the hollow polycarbonate plate 100 of this embodiment (see FIG. 15).
  • the bending rigidity of the hollow polycarbonate plate 100 curves in the Y direction with the pin-fixed side end 110Z as a fulcrum, and the The bending rigidity of the curved hollow polycarbonate plate 100 is different. Therefore, the curved shape of the hollow polycarbonate plate 100 becomes even more complicated.
  • the holding members 150, 151, etc. are set so that the holding members 150, 151 keep the tension of the hollow polycarbonate plate 100 within a specified value.
  • the setting in which the hem of the hollow polycarbonate board 100 is within the specified value means that the hem of the hollow polycarbonate board 100 of this embodiment is the same as that of the hollow polycarbonate board 100 when the hollow polycarbonate board 100 is held by the holding member 950 of the comparative example. It is preferable to set the value to be smaller than the initial value.
  • the setting in which the hem of the hollow polycarbonate plate 100 is within a specified value is more preferably the setting in which the deviation from the set value of the interval L is within a predetermined range, for example, within 10%.
  • the setting in which the hem of the hollow polycarbonate plate 100 falls within the specified value is the setting in which the interval L falls within the range of 9 mm to 11 mm.
  • the setting in which the amount of the hollow polycarbonate plates 100 falls within a specified value means, for example, that the deviation from the set amount of airgel N when filling airgel N between a pair of hollow polycarbonate plates 100 without any gaps is within a predetermined range. For example, a setting within 10% is preferable.
  • the light-transmitting member 10 in which the airgel layer 130 is formed between a pair of hollow polycarbonate plates 100 is provided in the hollow layer 55 between the adjacent glass plates 52. This improves the heat insulation properties of the multilayer transparent body 12. Furthermore, in the multilayer transparent body 12, the edges of the pair of hollow polycarbonate plates 100 are kept within a specified value by the holding members 150 and 151. This prevents contact between the glass plate 52 and the hollow polycarbonate plate 100, thereby improving the heat insulation effect of the multilayer transparent body 12.
  • the side end portions 110X and 110Z of the pair of hollow polycarbonate plates 100 are held by holding members 150 and 151 in a state in which they are inclined mutually inward in the thickness direction. Therefore, for example, even in areas where the lateral pressure acting on the pair of hollow polycarbonate plates 100 from the airgel layer 130 is low, such as the upper end portion of the airgel layer 130, compressive force is applied from the pair of hollow polycarbonate plates 100 to the airgel layer 130. .
  • This compressive force suppresses movement of the airgel due to vibrations of the airgel layer 130, and thus prevents or suppresses sedimentation of the airgel N due to vibrations or the like.
  • the holding member 150 has greater rigidity than the hollow polycarbonate plate 100. Therefore, even if lateral pressure is applied from the airgel layer 130 to the outer claws 150B, 151B and the inner claws 150A, 151A, the outer claws 150B, 151B and the inner claws 150A, 151A do not fall down. Therefore, the holding member 150 can continue to hold the side ends 110X and 110Z of the hollow polycarbonate plate 100 in a state in which they are mutually inclined inward in the thickness direction.
  • the rigidity of each member that resists the force in the out-of-plane direction of the hollow polycarbonate plate 100 has the following relationship.
  • the outer claw portions 150B, 151B and the inner claw portions 150A, 151A resist the moment generated in the hollow polycarbonate plate 100 due to the lateral pressure acting on the hollow polycarbonate plate 100 from the airgel layer 130.
  • the frame portions 150C, 151C resist the moment generated in the outer claw portions 150B, 151B and the inner claw portions 150A, 151A.
  • the side end portions 110X, 110Z of the hollow polycarbonate plate 100 apparently rotate, and this rotation angle Accordingly, the deflection at the center of the hollow polycarbonate plate 100 increases.
  • the order of rigidity of each member for suppressing the occurrence of deflection at the center position of the hollow polycarbonate plate 100 is as follows.
  • the order of rigidity of each member for suppressing the occurrence of deflection at the center position of the hollow polycarbonate plate 100 is preferably as follows.
  • the maximum amount of deflection of the hollow polycarbonate plate 100 when the hollow polycarbonate plate 100 is curved and fixed by the holding member 151 is the amount of deflection when the two hollow polycarbonate plates 100 are in contact.
  • the center line in the thickness direction of the hollow polycarbonate plate 100 is CH
  • the thickness of the airgel layer 130 is t
  • the width of the hollow polycarbonate plate 100 in the X direction is L
  • the maximum deflection amount of the hollow polycarbonate plate 100 is ⁇ MAX
  • ⁇ MAX t/L...(Formula 2)
  • the side end portion 110X of the hollow polycarbonate plate 100 is fixed and held at a rotation angle of 0rad to t/Lrad by the holding member 151.
  • the width of the hollow polycarbonate plate 100 in the Z direction is 1000 mm
  • the thickness of the hollow polycarbonate plate 100 is 4 mm.
  • the interval t between the side edges 110X of the two hollow polycarbonate plates 100 facing each other with an interval between them is 5 mm.
  • FIG. 6 is a graph showing the rigidity of the hollow polycarbonate plate 100 in relation to the bending moment and the rotation angle curve of the side end portion 110X.
  • FIG. 7 shows the elastic region DS (straight line portion) in FIG. 6, and the approximate expression for the elastic region DS (straight line portion) is the following (Formula 3).
  • y 1657x-1.0832 (formula 3)
  • one hollow polycarbonate plate 100 is formed from the airgel layer 130 formed by filling airgel N between two hollow polycarbonate plates 100.
  • the lateral pressure acting on is determined by the volume of the airgel layer 130, the density of the airgel N, and the area of the hollow polycarbonate plate 100 that receives the load.
  • ⁇ MAX under this condition is 2.5 mm, and ⁇ MAX is 0.016 rad.
  • the hollow polycarbonate plate 100 of the first embodiment is also curved in the Y direction using the pin-fixed side ends 110Z on both sides in the Z direction as fulcrums. Furthermore, inside the hollow polycarbonate plate 100, a plurality of ribs 104 are formed along the Z direction (see FIG. 15). Therefore, the hollow polycarbonate plate 100 of the first embodiment has a complicated curved shape. Therefore, although the above calculation example cannot be used as an accurate calculation example of the first embodiment, it can be used as a simple calculation example of the first embodiment. Note that in order to accurately determine the curved shape, rotation angle, etc. of the hollow polycarbonate plate 100, the curved shape, rotation angle, etc. may be determined from the results of numerical analysis using a computer or experiments using a prototype.
  • the light-transmitting member 10 of the first embodiment shown in FIGS. 1, 2, 4A, 4B, 5A, and 5B, and the light-transmitting member 900 of the comparative example shown in FIGS. 14A and 14B Compare the overfilling of airgel N with and . Note that the light-transmitting member 10 of the first embodiment and the light-transmitting member 900 of the comparative example were compared under the following conditions.
  • a solid polycarbonate plate with a thickness of 2 mm was used instead of the hollow polycarbonate plate 100.
  • a hollow polycarbonate plate with a thickness of 4 mm in which the hollow portion was not filled with airgel was used.
  • the holding members 150 and 151 of this embodiment used in the experiment are made of ASA resin.
  • the inner claw portions 150A, 151A and the outer claw portions 150B, 151B of this embodiment used in the experiment had a thickness of 1.0 mm.
  • the plate thickness of the frame portions 150C and 151C of this embodiment used in the experiment is 1.5 mm.
  • the holding member 950 of the comparative example used in the experiment is made of ASA resin.
  • the inner claw portion 950A, outer claw portion 950B, and frame portion 950C of the comparative example used in the experiment had a thickness of 0.5 mm.
  • the size of the airgel layer between the pair of polycarbonate plates of this embodiment used in the experiment was 1.5 m in height, 0.3 m in width, and 9 mm in thickness.
  • the specified amount ⁇ of airgel N filled between the pair of polycarbonate plates of this embodiment used in the experiment was 311.85 g.
  • the size of the airgel layer and the prescribed filling amount of airgel N are values when the pair of polycarbonate plates are not curved.
  • the airgel N used in this experiment has an average particle diameter of about 3 mm and a density of 77 g/L (liter).
  • the size of the airgel layer between a pair of polycarbonate plates in the comparative example used in the experiment was 1.0 m in height, 0.3 m in width, and 5 mm in thickness.
  • the specified amount ⁇ of airgel N filled between a pair of polycarbonate plates in the comparative example is 115.5 g.
  • Airgel N has an average particle diameter of about 3 mm and a density of 77 g/L.
  • Airgel N was filled between a pair of polycarbonate plates while being vibrated. Specifically, a pair of polycarbonate plates (see FIGS. 4A and 5A) to which holding members 150, 151, and 950 are joined except for the upper side edges are placed and fixed on a plate material such as wood. Then, while the plate material is vibrated with a vibration device such as a ball vibrator, the airgel N is allowed to freely fall and fill between the pair of polycarbonate plates.
  • a vibration device such as a ball vibrator
  • the filling amount ⁇ of airgel N when using the holding members 150 and 151 of this embodiment was 321.89 g. Therefore, the ratio ⁇ / ⁇ is 1.03.
  • the filling amount ⁇ of airgel N when using the holding member 950 of the comparative example was 168.45 g. Therefore, the ratio ⁇ / ⁇ is 1.46.
  • the filling amount ⁇ of airgel N when using the holding members 150 and 151 of this embodiment was approximately equal to the specified amount ⁇ .
  • the filling amount ⁇ of airgel N was nearly 1.5 times larger than the specified amount ⁇ , and the filling amount of airgel N was excessive. In other words, it was confirmed in this experimental example that overfilling of airgel N was suppressed in the light-transmitting member 10 of this embodiment.
  • FIG. 9 is a cross-sectional view of a horizontal cross section of the vertical center of the multilayer transparent body.
  • FIG. 10 is a sectional view of a vertical cross section of the central portion of the multilayer transparent body in the X direction.
  • the multilayer light-transmitting body 13 shown in FIGS. 9 and 10 includes two glass plates 52 as an example of light-transmitting plates, and a light-transmitting member 11 provided between the two glass plates 52. ing.
  • a light-transmitting member 11 is provided in the hollow layer 55 between the two glass plates 52.
  • the light-transmitting member 11 includes two hollow polycarbonate plates 100 as an example of light-transmitting resin plates, a holding member 250 (see FIGS. 10 and 11B), and a holding member 251 (see FIGS. 9 and 11A).
  • the airgel layer 130 is configured to include an airgel layer 130.
  • the airgel layer 130 is formed by filling airgel N between two hollow polycarbonate plates 100.
  • the holding member 251 shown in FIG. 9 holds and seals the side edges 110X of the two hollow polycarbonate plates 100 in the width direction along the X direction, and also protects the outer edge 132X between the two hollow polycarbonate plates 100. Seal.
  • the holding member 251 shown in FIGS. 9 and 11A includes a frame portion 251B and an outer claw portion 251A protruding from the outer end of the frame portion 251B.
  • the holding member 251 has the same structure as the holding member 151 of the first embodiment except that the inner claw portion 151A (see FIG. 3A) is omitted.
  • the frame portion 251B is provided along the end surface 112X of the side end portion 110X of the hollow polycarbonate plate 100.
  • the outer claw portion 251A is provided along the outer surface 113X of the side end portion 110X.
  • the outer claw portion 251A is inclined inward in the thickness direction of the hollow polycarbonate plate 100, that is, toward the airgel layer 130 side.
  • the holding member 251 has greater rigidity than the hollow polycarbonate plate 100.
  • the frame portion 251B has greater rigidity than the outer claw portion 251A.
  • the side ends 110X of the pair of hollow polycarbonate plates 100 are held by the holding member 251 in a state where they are inclined toward the inner side in the thickness direction (toward the airgel layer 130 side).
  • the rigidity of the hollow polycarbonate plate 100 is the bending rigidity when the hollow polycarbonate plate 100 is bent in the Y direction using the pin-fixed side ends 110X on both sides in the X direction as fulcrums.
  • the degree of curvature of the hollow polycarbonate plate 100 is illustrated to be larger than the actual degree of curvature in order to make it easier to understand.
  • the holding member 250 shown in FIG. 10 holds and seals the side edges 110Z of the two hollow polycarbonate plates 100 in the width direction along the Z direction, and also holds the outer edge 132Z between the two hollow polycarbonate plates 100. Seal.
  • the holding member 250 shown in FIGS. 10 and 11B includes a frame portion 250B and an outer claw portion 250A protruding from the outer end of the frame portion 250B.
  • the frame portion 250B is provided along the end surface 112Z of the side end portion 110Z of the hollow polycarbonate plate 100.
  • the outer claw portion 250A is provided along the outer surface 113Z of the side end portion 110Z.
  • the outer claw portion 250A is perpendicular to the frame portion 250B and is not inclined with respect to the frame portion 250B.
  • the holding member 250 has greater rigidity than the hollow polycarbonate plate 100.
  • the frame portion 250B has greater rigidity than the outer claw portion 250A.
  • the rigidity of the hollow polycarbonate plate 100 is the bending rigidity when the hollow polycarbonate plate 100 is bent in the Y direction using the pin-fixed side ends 110Z on both sides in the Z direction as fulcrums.
  • the two hollow polycarbonate plates 100 are parallel or approximately parallel, but in reality, the center portions of the two hollow polycarbonate plates 100 are slightly angled outward.
  • the side edges 110X of the two hollow polycarbonate plates 100 are inclined inward in the thickness direction.
  • the two hollow polycarbonate plates 100 bulge outward in the thickness direction from the side edges 110X toward the center due to the lateral pressure acting on the two hollow polycarbonate plates 100 from the airgel layer 130. ).
  • a gap L is formed between the hollow polycarbonate plate 100 and the glass plate 52.
  • the two hollow polycarbonate plates 100 are parallel or substantially parallel. However, a gap L is formed between the hollow polycarbonate plate 100 and the glass plate 52.
  • the gap between the joint portion of the holding member 250 and the holding member 251 is filled with a sealant such as silicone, a foam material such as open-cell urethane sponge, a hot melt adhesive, etc., and the airgel N is filled from the gap. It is sealed to the extent that it does not leak.
  • a sealant such as silicone, a foam material such as open-cell urethane sponge, a hot melt adhesive, etc.
  • the side ends 110X and 110Z of the hollow polycarbonate plate 100 are fixed to the holding members 250 and 251 using an adhesive such as a silicone sealant.
  • the holding members 250 and 251 seal the outer edge of the light-transmitting member 11.
  • the hollow polycarbonate plate 100 is installed with the direction along the ribs 104 (see FIG. 15), that is, the axial direction of the cylindrical hollow part 106 (see FIG. 15) as the vertical direction.
  • holding members 250 and 251 are joined to the side edges 110X and 110Z of the hollow polycarbonate plate 100, excluding the upper side edge 110Z of the hollow polycarbonate plate 100, and the lower opening of the hollow portion 106 and the airgel layer 130 is Seal the ends.
  • the airgel M is filled into the hollow part 106 from the opening above the hollow part 106 of the hollow polycarbonate plate 100.
  • FIG. 12A is a horizontal cross section of the center part in the Z direction of the hollow polycarbonate plate 100 in the above state.
  • FIG. 13A is a vertical cross section of the central portion in the X direction of the hollow polycarbonate plate 100 in the above state.
  • FIG. 12B is a horizontal cross section of the center portion in the Z direction of the hollow polycarbonate plate 100 in the above state.
  • FIG. 13B is a vertical cross section of the central portion in the X direction of the hollow polycarbonate plate 100 in the above state.
  • the hollow polycarbonate plate 100 is tilted inward in the thickness direction from the side edge portions 110X, and outward in the thickness direction from the side edges 110X toward the center. Inflate (inflate).
  • the side ends 110X and 110Z of the pair of hollow polycarbonate plates 100 are held by a holding member 251 in a state in which they are tilted inward in the thickness direction. Therefore, in this embodiment, compared to the case where the side end portions 110X are not inclined, the airgel layer 130 formed by filling airgel N between the pair of hollow polycarbonate plates 100 is The applied lateral pressure prevents the pair of hollow polycarbonate plates 100 from bulging outward. Therefore, overfilling of airgel N between the pair of hollow polycarbonate plates 100 is prevented or suppressed. Furthermore, since the hollow polycarbonate plate 100 is prevented from coming close to or in contact with the glass plate 52, the distance L between the hollow polycarbonate plate 100 and the glass plate 52 is secured.
  • the holding members 250, 251, etc. are set so that the holding members 250, 251 keep the tension of the hollow polycarbonate plate 100 within a specified value.
  • the setting in which the hem of the hollow polycarbonate board 100 falls within the specified value means that the hem of the hollow polycarbonate board 100 of the embodiment is the same as that of the hollow polycarbonate board 100 when a pair of hollow polycarbonate boards 100 are held by the holding member 950 of the comparative example. It is preferable to set the value to be smaller than the initial value.
  • the setting in which the hem of the hollow polycarbonate plate 100 falls within a specified value is more preferably the setting in which the deviation of the set value of the interval L falls within a predetermined range, for example, 10%.
  • the setting where the hem of the hollow polycarbonate plate 100 falls within the specified value is the setting where it falls between 9 mm and 11 mm.
  • the setting in which the hem of the hollow polycarbonate plates 100 is within a specified value means that the deviation from the set amount of airgel N when filling airgel N between a pair of hollow polycarbonate plates 100 without any gap is within a specified value, For example, a setting within 10% is preferable.
  • the light-transmitting member 11 in which the airgel layer 130 is formed between a pair of hollow polycarbonate plates 100 is provided in the hollow layer 55 between the adjacent glass plates 52.
  • the holding members 250 and 251 suppress the swelling of the pair of hollow polycarbonate plates 100 due to the lateral pressure acting on the pair of hollow polycarbonate plates 100 from the airgel layer 130, and the pressure is kept within a specified value. Therefore, since contact between the glass plate 52 and the hollow polycarbonate plate 100 is prevented, the heat insulating effect of the multilayer transparent body 13 is improved.
  • the side end portions 110X of the pair of hollow polycarbonate plates 100 are held by a holding member 251 in a state in which they are inclined mutually inward in the thickness direction. Therefore, for example, even in areas where the lateral pressure acting on the pair of hollow polycarbonate plates 100 from the airgel layer 130 is low, such as the upper end portion of the airgel layer 130, compressive force is applied to the airgel layer 130 from the pair of hollow polycarbonate plates 100. There is. This compressive force suppresses vibrations and the like of the airgel layer 130, so that sedimentation of the airgel N due to vibrations and the like is prevented or suppressed.
  • the holding member 250 has greater rigidity than the hollow polycarbonate plate 100. Therefore, even if lateral pressure is applied from the airgel layer 130 to the outer claw portion 251A, the outer claw portion 251A does not fall down. Therefore, the holding member 250 can continue to hold the side ends 110X of the hollow polycarbonate plate 100 in a state in which they are mutually inclined inward in the thickness direction.
  • the spacers 21 are provided on all four sides of the glass plate 52.
  • the spacer 21 can be omitted as appropriate.
  • the holding members 151, 251 and the silicone sealant 31 may be directly bonded.
  • the airgel layer 130 is formed by filling airgel N between a pair of hollow polycarbonate plates 100. Due to the lateral pressure acting on the pair of hollow polycarbonate plates 100, the pair of hollow polycarbonate plates 100 bulge outward in the thickness direction (bulge). However, the pair of hollow polycarbonate plates 100 do not have to fit outward in the thickness direction.
  • the width of one side of the hollow polycarbonate plates 100 is as small as about 50 cm, even after the airgel N is filled between the pair of hollow polycarbonate plates 100, the pair of hollow polycarbonate plates 100 will hardly fill or The curved state before filling airgel N between the pair of hollow polycarbonate plates 100 may be maintained in some cases.
  • the holding members 150 and 151 hold both the side end portions 110X and 110Z of the hollow polycarbonate plate 100 in a state in which they are inclined inward in the thickness direction.
  • the holding members 150 and 151 may be configured to hold only one of the side end portion 110X and the side end portion 110Z in a state in which it is inclined inward in the thickness direction.
  • the holding members 250 and 251 hold the side end portion 110 of the hollow polycarbonate plate 100 in a state in which it is inclined inward in the thickness direction.
  • the holding members 250 and 251 may be configured to hold one or both of the side end portions 110X and 110Z in a state in which they are inclined inward in the thickness direction.
  • the holding member 150, the holding member 151, the holding member 250, and the holding member 251 can be used in appropriate combinations.
  • the holding member 151 and the holding member 251 may be combined, or the holding member 151 and the holding member 250 may be combined.
  • the holding member may be configured to hold at least one of the side end portions 110X and 110Z of the hollow polycarbonate plate 100 in a state in which it is inclined inward in the thickness direction.
  • the holding member may be provided with a groove portion into which the side end portions 110X and 110Z are fitted, thereby holding the side end portions 110X and 110Z in a state inclined inward in the thickness direction.
  • the hollow polycarbonate plate 100 may be reduced by reducing the distance between the two hollow polycarbonate plates 100 or reducing the density of the airgel N. suppress the inclinations of Even if the above measures are taken, by applying the technology of the present disclosure to the two hollow polycarbonate plates 100, the degree of the above measures can be reduced.
  • the hollow polycarbonate plate 100 was used as the translucent resin plate.
  • the transparent resin plate is not limited to the hollow polycarbonate plate 100.
  • the translucent resin plate may have a hollow portion that can be filled with airgel, or may not have a hollow portion.
  • the translucent resin plate may be, for example, a solid polycarbonate plate or an acrylic plate.
  • the light-transmitting plate material may be, for example, a glass plate other than a light-transmitting resin plate.
  • the thickness of the light-transmitting plate material (corresponding to the thickness of the hollow polycarbonate plate 100 in FIG. 1) is less than or equal to the thickness of the light-transmitting plate (glass plate 52). It is desirable that there be (thickness of translucent plate material (glass plate) ⁇ thickness of translucent plate (glass plate 52)).
  • the thickness of the light-transmitting plate (glass plate) equal to or less than the thickness of the light-transmitting plate (glass plate 52) in this way, it is possible to reduce the weight of the light-transmitting plate (glass plate). This improves the workability when filling airgel N between two translucent plates (glass plates), and thus improves the manufacturing efficiency of the translucent member 10.
  • the thickness of the light-transmitting plate material (glass plate) less than the thickness of the light-transmitting plate (glass plate 52)
  • the light-transmitting plate material (glass plate) and the light-transmitting plate (glass plate 52) can be used to create double-layered glass. The transparency of double-glazed glass can be improved when
  • the number of glass plates 52 provided in the multi-layer transparent bodies 12 and 13 is not limited to two.
  • three or more glass plates 52 may be provided in the multi-layer transparent bodies 12 and 13. good.
  • the multilayer transparent bodies 12 and 13 will have a plurality of hollow layers. In this case, at least one of the plurality of hollow layers can be provided with a light-transmitting member to which the technology of the present disclosure is applied.
  • the glass plate 52 is used as the light-transmitting plate.
  • the transparent plate is not limited to the glass plate 52.
  • the transparent plate may be made of resin such as an acrylic plate or a polycarbonate plate, for example. Note that a transparent plate made of resin has lower fire resistance or durability than glass, but is lighter than glass.
  • the light-transmitting member, the light-transmitting plate, and the light-transmitting plate material may be transparent or semi-transparent as long as light passes through them.
  • first embodiment and the second embodiment described above can be implemented in various ways without departing from the gist of the present disclosure.
  • the first embodiment, the second embodiment, the modified examples, etc. described above can be implemented in combination as appropriate.
  • ⁇ Additional note 1> a pair of translucent plates arranged facing each other; an airgel layer formed by airgel filled between the pair of translucent plate materials; The outer edges between the pair of light-transmitting plate materials are sealed, and the side edges of the pair of light-transmitting plate materials in the width direction are held in a state inclining inwardly in the thickness direction, and the pair of light-transmitting plate materials are separated from the airgel layer.
  • a holding member that suppresses the pair of light-transmitting plates from becoming loose due to lateral pressure acting on the light-transmitting plates; Translucent member with.
  • the holding member is a frame portion along the end surface of the side end portion of the translucent plate material; an outer claw protruding from the outer end of the frame part in an inclined direction inward in the thickness direction of the translucent plate material and disposed along the outer surface of the side end part; has The holding member has greater rigidity than the transparent plate material.
  • the outer claw portion has greater rigidity than the translucent plate material.
  • the outer claw portions protrude from the outer end portions on both sides of the frame portion and are respectively arranged along the outer surfaces of the side end portions of the pair of light-transmitting plate materials.
  • the light-transmitting member according to appendix 2 The holding member projects from the inside of the outer end of the frame portion inward in the thickness direction of the translucent plate material, and has an inner claw portion disposed along the inner surface of the side end portion. have, The light-transmitting member according to any one of Supplementary notes 2 to 4.
  • the outer claw portion and the inner claw portion have greater rigidity than the transparent plate material.
  • the length of the outer claw portion in the protruding direction is greater than or equal to the length of the inner claw portion in the protruding direction; The light-transmitting member according to appendix 5.
  • ⁇ Additional note 8> The length of the outer claw portion in the protruding direction is the same as the length of the inner claw portion in the protruding direction; The light-transmitting member according to appendix 5.
  • the inner claw portions protrude from inside the outer end portions on both sides of the frame portion, and are respectively arranged along the inner surfaces of the side end portions of the pair of translucent plate materials.
  • ⁇ Additional note 10> The pair of translucent plates are arranged outwardly in the thickness direction from the side end portions toward the center portion in the width direction. The light-transmitting member according to any one of Supplementary notes 1 to 9.
  • the holding member holds the side end portions of the pair of translucent plate materials on both sides in the width direction, respectively.
  • the translucent plate material has a plurality of hollow parts filled with airgel,
  • the translucent plate material is A pair of polycarbonate plates facing each other, a plurality of ribs provided between the pair of polycarbonate plates, connecting the pair of polycarbonate plates and forming a plurality of hollow parts between the pair of polycarbonate plates; has The hollow part is filled with airgel.
  • ⁇ Additional note 14> a plurality of transparent plates facing each other and having closed edges;
  • the light-transmitting plate material and the light-transmitting plate are glass plates,
  • the thickness of the light-transmitting plate material is equal to or less than the thickness of the light-transmitting plate,
  • a holding member that suppresses the Translucent member with.
  • the holding member is a frame portion along the end surface of the side end portion of the translucent plate material; an outer claw portion that inclines and projects inward in the thickness direction from an outer end portion of the frame portion and extends along an outer surface of the side end portion; has The holding member has greater rigidity than the transparent plate material.
  • the holding member projects obliquely from inside the outer end of the frame toward the inner side in the thickness direction, and has an inner claw portion along the inner surface of the side end.
  • the light-transmitting member according to any one of Supplementary Notes 1 to 3 is provided in a hollow layer between a plurality of light-transmitting plates whose edges are closed and spaced apart from the light-transmitting plates; Multi-layer translucent material.

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Abstract

This translucent member comprises: a pair of translucent sheet materials disposed so as to face each other; an aerogel layer formed by an aerogel filled in between the pair of translucent sheet materials; and a holding member that seals outer edge parts between the pair of translucent sheet materials, holds lateral ends of the pair of translucent sheet materials in the width direction, with the lateral ends being inclined inward in the thickness direction, and inhibits the pair of translucent sheet materials from swelling due to lateral pressure from the aerogel layer acting on the pair of translucent sheet materials.

Description

透光部材及び複層透光体Translucent member and multilayer translucent body
　本開示は、透光部材及び複層透光体に関する。 The present disclosure relates to a light-transmitting member and a multilayer light-transmitting body.
　特開平７－２２０６６２号公報は、内部を大気圧よりも低い圧力にすることが必要な画像素子に係る。この特開平７－２２０６６２号公報には、軽量薄型の平面型画像素子に関する技術が開示されている。 JP-A-7-220662 relates to an image element that requires internal pressure to be lower than atmospheric pressure. This Japanese Patent Application Laid-Open No. 7-220662 discloses a technology related to a lightweight and thin planar image element.
　特開２００６－２７４６６２号公報には、圧縮力が作用するガラス板の圧縮力作用方向の両端部を、躯体側の固定金物の凹溝部に嵌め込んで固定するガラス板固定構造に関する技術が開示されている。このガラス板の両端部の両面と凹溝部との間には、緩衝材が挟み込まれている。 Japanese Patent Laid-Open No. 2006-274662 discloses a technique related to a glass plate fixing structure in which both ends of a glass plate on which a compressive force is applied are fitted and fixed in grooves of a fixing metal member on the frame body side. ing. A cushioning material is sandwiched between both surfaces of both ends of the glass plate and the groove portion.
　特開２００７－１９８０１６号公報には、軸組又は枠組の内側にガラスパネルを固定するガラスパネル固定構造に関する技術が開示されている。 Japanese Patent Laid-Open No. 2007-198016 discloses a technique related to a glass panel fixing structure that fixes a glass panel inside a frame or frame.
　特開２０１８－１７８３７２号公報には、エアロゲルを利用した透光部材、特に外壁パネルなどの建材として利用される透光部材に関する技術が開示されている。この透光部材には、第１透光板及び第２透光板と、これら第１透光板及び第２透光板の間に画成される半透明領域とを具備するエアロゲルが利用されている。半透明領域は、第１透光板及び第２透光板の間に、少なくともエアロゲルの半透明粒子を充填することにより形成されている。半透明粒子の平均粒子径は、０．０５～０．５ｍｍの範囲とされている。 JP 2018-178372A discloses a technology related to a light-transmitting member using airgel, particularly a light-transmitting member used as a building material such as an exterior wall panel. This light-transmitting member utilizes an airgel that includes a first light-transmitting plate, a second light-transmitting plate, and a semi-transparent region defined between the first light-transmitting plate and the second light-transmitting plate. . The semi-transparent region is formed by filling at least semi-transparent particles of airgel between the first light-transmitting plate and the second light-transmitting plate. The average particle diameter of the semi-transparent particles is in the range of 0.05 to 0.5 mm.
　対向して配置された一対の透光性板材の間にエアロゲルを充填してエアロゲル層を形成する際に、エアロゲル層から一対の透光性板材に作用する圧力（側圧）によって、一対の透光性板材が外側にはらむと、一対の透光性板材の間にエアロゲルが過充填される虞がある。 When filling an airgel layer between a pair of translucent plates placed opposite each other, pressure (lateral pressure) exerted from the airgel layer on the pair of translucent plates causes the pair of translucent plates to If the translucent plate material sticks to the outside, there is a risk that airgel may be overfilled between the pair of translucent plate materials.
　本開示は、一対の透光性板材の間にエアロゲルを充填してエアロゲル層を形成する際に、一対の透光性板材が外側にはらむことを抑制することが目的である。 The purpose of the present disclosure is to suppress the pair of light-transmitting plate materials from being stuck to the outside when filling airgel between the pair of light-transmitting plate materials to form an airgel layer.
　第１態様に係る透光部材は、互いに対向して配置された一対の透光性板材と、一対の前記透光性板材の間に充填されたエアロゲルによって形成されたエアロゲル層と、一対の前記透光性板材の間の外縁部を封止すると共に一対の前記透光性板材の幅方向の側端部を互いに厚み方向内側に傾斜させた状態で保持し、前記エアロゲル層から一対の前記透光性板材に作用する側圧による一対の前記透光性板材のはらみを抑制する保持部材と、を備える。 The light-transmitting member according to the first aspect includes: a pair of light-transmitting plates arranged to face each other; an airgel layer formed by airgel filled between the pair of the light-transmitting plates; The outer edges between the translucent plates are sealed, and the side edges of the pair of translucent plates in the width direction are held so as to be inclined inward in the thickness direction, and the pair of translucent plates are removed from the airgel layer. A holding member that suppresses the pair of light-transmitting plates from becoming loose due to lateral pressure acting on the light-transmitting plates.
　第１態様によれば、一対の透光性板材の幅方向の側端部は、保持部材によって互いに厚み方向内側に傾斜された状態で保持されている。そのため、一対の透光性板材は、エアロゲルが充填されていない状態では、各々の側端部から幅方向の中央部に向かうにしたがって厚み方向内側に湾曲している。これにより、第１態様では、一対の透光性板材の側端部が傾斜していない場合と比較し、一対の透光性板材の間にエアロゲルを充填してエアロゲル層を形成する際に、一対の透光性板材が外側へはらむことが抑制される。よって、一対の透光性板材の間に、エアロゲルが過充填されることが防止又は抑制される。更に、保持部材によって一対の透光性板材を厚み方向内側に傾斜させた状態で保持することにより、一対の透光性板材の間にエアロゲルを充填する前において、透光部材を運搬又は移動等する際に、一対の透光性板材の形態が保持されやすい。 According to the first aspect, the side ends of the pair of translucent plates in the width direction are held by the holding member in a state in which they are inclined inward in the thickness direction. Therefore, in a state where the pair of light-transmitting plates are not filled with airgel, they are curved inward in the thickness direction from each side end toward the center in the width direction. As a result, in the first aspect, when forming an airgel layer by filling airgel between a pair of light-transmitting plate materials, compared to a case where the side end portions of the pair of light-transmitting plate materials are not inclined, This prevents the pair of translucent plates from extending outward. Therefore, overfilling of the airgel between the pair of translucent plates is prevented or suppressed. Furthermore, by holding the pair of translucent plates in a state inclined inward in the thickness direction by the holding member, the translucent members can be transported or moved before filling the space between the pair of translucent plates with airgel. When doing so, the shape of the pair of light-transmitting plates is easily maintained.
　また、一対の透光性板材の幅方向の側端部は、保持部材によって互いに厚み方向内側に傾斜された状態で保持されるので、一対の透光性板材の幅方向の側端部からエアロゲル層に圧縮力が付与される。この圧縮力によってエアロゲル層の振動等が抑制されるため、振動等によるエアロゲルの沈降が防止又は抑制される。 In addition, since the side edges of the pair of translucent plates are held by the holding member in a state in which they are tilted inward in the thickness direction, the airgel can be removed from the side edges of the pair of translucent plates in the width direction. A compressive force is applied to the layer. This compressive force suppresses vibrations and the like of the airgel layer, thereby preventing or suppressing sedimentation of the airgel due to vibrations and the like.
　第２態様に係る透光部材は、第１態様に係る透光部材において、前記保持部材は、前記透光性板材の前記側端部の端面に沿った枠部と、前記枠部の外端部から前記透光性板材の厚み方向内側に向かって傾斜した状態で突出し、前記側端部の外面に沿って配置される外側爪部と、を有し、前記保持部材は前記透光性板材よりも剛性が大きい。 The light-transmitting member according to a second aspect is the light-transmitting member according to the first aspect, in which the holding member includes a frame portion along an end surface of the side end portion of the light-transmitting plate material, and an outer end of the frame portion. an outer claw part that protrudes inward in the thickness direction of the light-transmitting plate material from the part thereof and is disposed along the outer surface of the side end part, and the holding member It has greater rigidity.
　第２態様によれば、保持部材の外側爪部は、枠部の外端部から透光性板材の厚み方向内側に向かって傾斜した状態で突出している。また、保持部材は、透光性板材よりも剛性が大きい。これにより、エアロゲル層から外側爪部に側圧が作用したときに、外側爪部の倒れが抑制される。そのため、保持部材によって、一対の透光性板材の幅方向の側端部を互いに厚み方向内側に傾斜させた状態で保持し続けることができる。 According to the second aspect, the outer claw portion of the holding member projects from the outer end of the frame portion in an inclined state toward the inner side in the thickness direction of the translucent plate material. Further, the holding member has greater rigidity than the light-transmitting plate material. Thereby, when lateral pressure is applied from the airgel layer to the outer claw portion, the outer claw portion is prevented from falling down. Therefore, the holding member can continue to hold the pair of translucent plate materials in a state in which the side ends in the width direction are mutually inclined inward in the thickness direction.
　第３態様に係る透光部材は、第２態様に係る透光部材において、前記外側爪部は、前記透光性板材よりも剛性が大きい。 In the light-transmitting member according to the third aspect, in the light-transmitting member according to the second aspect, the outer claw portion has greater rigidity than the light-transmitting plate material.
　第４態様に係る透光部材は、第２態様に係る透光部材において、前記外側爪部は、前記枠部の両側の前記外端部から突出し、一対の前記透光性板材の前記側端部の前記外面に沿ってそれぞれ配置される。 In the light-transmitting member according to a fourth aspect, in the light-transmitting member according to the second aspect, the outer claw portions protrude from the outer end portions on both sides of the frame portion, and the side ends of the pair of light-transmitting plate materials. each along the outer surface of the section.
　第５態様に係る透光部材は、第２態様に係る透光部材において、前記保持部材は、前記枠部における前記外端部の内側から前記透光性板材の厚み方向内側に向かって傾斜した状態で突出し、前記側端部の内面に沿って配置される内側爪部を有している。 In the light-transmitting member according to a fifth aspect, in the light-transmitting member according to the second aspect, the holding member is inclined from the inside of the outer end of the frame toward the inside in the thickness direction of the light-transmitting plate material. It has an inner claw part that protrudes in the state and is arranged along the inner surface of the side end part.
　第５態様によれば、保持部材の内側爪部は、枠部における外端部の内側から透光性板材の厚み方向内側に向かって傾斜した状態で突出している。また、保持部材は、透光性板材よりも剛性が大きい。これにより、エアロゲル層から外側爪部及び内側爪部に側圧が作用した場合に、外側爪部及び内側爪部の倒れが抑制される。そのため、保持部材によって、一対の透光性板材の幅方向の側端部を互いに厚み方向内側に傾斜させた状態で保持し続けることができる。 According to the fifth aspect, the inner claw portion of the holding member projects from the inner side of the outer end portion of the frame portion in an inclined state toward the inner side in the thickness direction of the translucent plate material. Further, the holding member has greater rigidity than the light-transmitting plate material. Thereby, when lateral pressure acts on the outer claw part and the inner claw part from the airgel layer, the outer claw part and the inner claw part are prevented from falling down. Therefore, the holding member can continue to hold the pair of translucent plate materials in a state in which the side ends in the width direction are mutually inclined inward in the thickness direction.
　第６態様に係る透光部材は、第５態様に係る透光部材において、前記外側爪部及び前記内側爪部は、前記透光性板材よりも剛性が大きい。 In the light-transmitting member according to the sixth aspect, in the light-transmitting member according to the fifth aspect, the outer claw portion and the inner claw portion have greater rigidity than the light-transmitting plate material.
　第７態様に係る透光部材は、第５態様に係る透光部材において、前記外側爪部の突出方向の長さは、前記内側爪部の突出方向の長さ以上である。 In the light-transmitting member according to the seventh aspect, in the light-transmitting member according to the fifth aspect, the length of the outer claw portion in the protruding direction is greater than or equal to the length of the inner claw portion in the protruding direction.
　第８態様に係る透光部材は、第５態様に係る透光部材において、前記外側爪部の突出方向の長さは、前記内側爪部の突出方向の長さと同じである。 In the light-transmitting member according to the eighth aspect, in the light-transmitting member according to the fifth aspect, the length of the outer claw portion in the protruding direction is the same as the length of the inner claw portion in the protruding direction.
　第９態様に係る透光部材は、第５態様に係る透光部材において、前記内側爪部は、前記枠部における両側の前記外端部の内側から突出し、一対の前記透光性板材の前記側端部の前記内面に沿ってそれぞれ配置される。 In the light-transmitting member according to a ninth aspect, in the light-transmitting member according to the fifth aspect, the inner claw portion protrudes from inside the outer end portions on both sides of the frame portion, and are respectively disposed along the inner surface of the side edges.
　第１０態様に係る透光部材は、第１態様に係る透光部材において、一対の前記透光性板材は、前記側端部から幅方向の中央部に向かって厚み方向外側にはらむ。 A light-transmitting member according to a tenth aspect is the light-transmitting member according to the first aspect, in which the pair of light-transmitting plate materials are arranged outward in the thickness direction from the side end portions toward the center portion in the width direction.
　第１１態様に係る透光部材は、第１態様に係る透光部材において、前記保持部材は、一対の前記透光性板材の幅方向両側の前記側端部をそれぞれ保持する。 A light-transmitting member according to an eleventh aspect is the light-transmitting member according to the first aspect, in which the holding members each hold the side end portions on both sides in the width direction of the pair of light-transmitting plate materials.
　第１２態様に係る透光部材は、第１態様に係る透光部材において、前記透光性板材は、エアロゲルが充填される複数の中空部を有している。 A light-transmitting member according to a twelfth aspect is the light-transmitting member according to the first aspect, in which the light-transmitting plate material has a plurality of hollow portions filled with airgel.
　第１３態様に係る透光部材は、第５態様に係る透光部材において、前記透光性板材は、互いに対向する一対のポリカーボネート板と、一対の前記ポリカーボネート板の間に設けられ、一対の前記ポリカーボネート板を連結すると共に、一対の前記ポリカーボネート板の間に複数の中空部を形成する複数のリブと、を有し、前記中空部には、エアロゲルが充填されている。 The light-transmitting member according to a thirteenth aspect is the light-transmitting member according to the fifth aspect, wherein the light-transmitting plate material is provided between a pair of polycarbonate plates facing each other and a pair of the polycarbonate plates, and the light-transmitting member is provided between a pair of polycarbonate plates facing each other, and and a plurality of ribs that connect the polycarbonate plates and form a plurality of hollow parts between the pair of polycarbonate plates, and the hollow parts are filled with airgel.
　第１４態様に係る複層透光体は、互いに対向すると共に、縁部間が閉塞された複数枚の透光板と、隣り合う前記透光板の間の中空層に、前記透光板と間隔をあけて設けられた第１態様～第１３態様の何れか１つに係る透光部材と、を備える。 The multilayer transparent body according to the fourteenth aspect includes a plurality of transparent plates that face each other and are closed between edges, and a hollow layer between the adjacent transparent plates with a space between the transparent plates. The light-transmitting member according to any one of the first to thirteenth aspects is provided.
　第１４態様によれば、一対の透光性板材の間にエアロゲル層が形成された透光部材が、隣り合う透光板の間の中空層に設けられているので、複層透光体の断熱性が向上する。また、エアロゲル層から一対の透光性板材に作用する側圧による一対の透光性板材のはらみが、保持部材によって抑制されている。これにより、透光板と透光性板材との接触が防止されるので、複層透光体の断熱効果が向上する。 According to the fourteenth aspect, since the light-transmitting member in which the airgel layer is formed between the pair of light-transmitting plates is provided in the hollow layer between the adjacent light-transmitting plates, the heat insulation of the multilayer light-transmitting body is improved. will improve. Further, the holding member suppresses the pair of light-transmitting plates from becoming loose due to lateral pressure acting on the pair of light-transmitting plates from the airgel layer. This prevents contact between the light-transmitting plate and the light-transmitting plate material, thereby improving the heat insulation effect of the multilayer light-transmitting body.
　第１５態様に係る複層透光体は、第１４態様に係る複層透光体において、前記透光性板材及び前記透光板は、ガラス板とされ、前記透光性板材の厚みは、前記透光板の厚み以下である。 A multi-layer transparent body according to a fifteenth aspect is a multi-layer transparent body according to a fourteenth aspect, wherein the transparent plate material and the transparent plate are glass plates, and the thickness of the transparent plate material is The thickness is equal to or less than the thickness of the transparent plate.
　本開示によれば、一対の透光性板材の間にエアロゲルを充填してエアロゲル層を形成する際に、一対の透光性板材が外側にはらむことを抑制することができる。 According to the present disclosure, when forming an airgel layer by filling airgel between a pair of light-transmitting plate materials, it is possible to prevent the pair of light-transmitting plate materials from sticking to the outside.
第一実施形態に係る複層透光体のＺ方向の中央部の水平断面を示す断面図である。FIG. 2 is a cross-sectional view showing a horizontal cross section of the central portion in the Z direction of the multilayer light transmitting body according to the first embodiment. 第一実施形態に係る複層透光体のＸ方向の中央部の鉛直断面を示す断面図である。FIG. 2 is a cross-sectional view showing a vertical cross section of the central portion in the X direction of the multilayer transparent body according to the first embodiment. 第一実施形態における中空ポリカーボネート板のＸ方向の側端部を保持する保持部材の断面図である。It is a sectional view of the holding member which holds the side edge part of the hollow polycarbonate board in the X direction in the first embodiment. 第一実施形態における中空ポリカーボネート板のＺ方向の側端部を保持する保持部材の断面図である。It is a sectional view of the holding member which holds the side edge part of the Z direction of the hollow polycarbonate board in a first embodiment. 第一実施形態に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填する前の、一対の中空ポリカーボネート板のＺ方向の中央部の水平断面を示す断面図である。FIG. 2 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates before filling airgel between the pair of hollow polycarbonate plates in the manufacturing process of the light-transmitting member according to the first embodiment. 第一実施形態に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填した後の、一対の中空ポリカーボネート板のＺ方向の中央部の水平断面を示す断面図である。FIG. 2 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates after filling airgel between the pair of hollow polycarbonate plates in the manufacturing process of the light-transmitting member according to the first embodiment. 第一実施形態に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填する前の、一対の中空ポリカーボネート板のＸ方向の中央部の垂直断面を示す断面図である。FIG. 3 is a cross-sectional view showing a vertical cross section of the central portion of the pair of hollow polycarbonate plates in the X direction before filling the space between the pair of hollow polycarbonate plates with airgel in the manufacturing process of the light-transmitting member according to the first embodiment. 第一実施形態に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填し、一対の中空ポリカーボネート板の上端部間を封止した後の、一対の中空ポリカーボネート板のＸ方向の中央部の垂直断面を示す断面図である。In the manufacturing process of the transparent member according to the first embodiment, after filling airgel between the pair of hollow polycarbonate plates and sealing between the upper ends of the pair of hollow polycarbonate plates, the X direction of the pair of hollow polycarbonate plates is FIG. 3 is a cross-sectional view showing a vertical cross section of the central portion. 第一実施形態における中空ポリカーボネート板に作用する曲げモーメントと、中空ポリカーボネート板の側端部の回転角曲線との関係を示すグラフである。It is a graph showing the relationship between the bending moment acting on the hollow polycarbonate plate and the rotation angle curve of the side end portion of the hollow polycarbonate plate in the first embodiment. 図６に示されるグラフの弾性域を示すグラフである。7 is a graph showing an elastic region of the graph shown in FIG. 6. 図６及び図７に示されるグラフの計算例の条件を説明する説明図である。FIG. 8 is an explanatory diagram illustrating conditions for calculation examples of the graphs shown in FIGS. 6 and 7. FIG. 第二実施形態に係る複層透光体のＺ方向の中央部の水平断面を示す断面図である。FIG. 7 is a cross-sectional view showing a horizontal cross section of a central portion in the Z direction of a multilayer transparent body according to a second embodiment. 第二実施形態に係る複層透光体のＸ方向の中央部の鉛直断面を示す断面図である。FIG. 7 is a cross-sectional view showing a vertical cross section of the central portion in the X direction of the multilayer transparent body according to the second embodiment. 第二実施形態における中空ポリカーボネート板のＸ方向の側端部を保持する保持部材の断面図である。It is a sectional view of the holding member which holds the side edge part of the hollow polycarbonate board in the X direction in a second embodiment. 第二実施形態における中空ポリカーボネート板のＺ方向の側端部を保持する保持部材の断面図である。It is a sectional view of the holding member which holds the side edge part of the Z direction of the hollow polycarbonate board in a second embodiment. 第二実施形態に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填する前の、一対の中空ポリカーボネート板のＺ方向の中央部の水平断面を示す断面図である。FIG. 7 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates before filling airgel between the pair of hollow polycarbonate plates in the manufacturing process of the light-transmitting member according to the second embodiment. 第二実施形態に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填した後の、一対の中空ポリカーボネート板のＺ方向の中央部の水平断面を示す断面図である。FIG. 7 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates after filling the space between the pair of hollow polycarbonate plates with airgel in the manufacturing process of the light-transmitting member according to the second embodiment. 第二実施形態に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填する前の、一対の中空ポリカーボネート板のＸ方向の中央部の鉛直断面を示す断面図である。In the manufacturing process of the light-transmitting member according to the second embodiment, it is a sectional view showing a vertical cross section of the central part of the pair of hollow polycarbonate plates in the X direction before filling the space between the pair of hollow polycarbonate plates with airgel. 第二実施形態に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填し、一対の中空ポリカーボネート板の上端部を封止した後の、中空ポリカーボネート板のＸ方向の中央部の鉛直断面を示す断面図である。In the manufacturing process of the light-transmitting member according to the second embodiment, after filling airgel between the pair of hollow polycarbonate plates and sealing the upper ends of the pair of hollow polycarbonate plates, the central part of the hollow polycarbonate plates in the X direction FIG. 3 is a cross-sectional view showing a vertical cross section. 参考例に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填する前の、一対の中空ポリカーボネート板のＺ方向の中央部の水平断面を示す断面図である。FIG. 3 is a cross-sectional view showing a horizontal cross section of the central portion of a pair of hollow polycarbonate plates in the Z direction before filling the space between the pair of hollow polycarbonate plates with airgel in the manufacturing process of a light-transmitting member according to a reference example. 参考例に係る透光部材の製造工程において、一対の中空ポリカーボネート板の間にエアロゲルを充填した後の、一対の中空ポリカーボネート板のＺ方向の中央部の水平断面を示す断面図である。FIG. 3 is a cross-sectional view showing a horizontal cross section of the central part in the Z direction of a pair of hollow polycarbonate plates after filling airgel between the pair of hollow polycarbonate plates in the manufacturing process of a light-transmitting member according to a reference example. 第一実施形態及び第二実施形態における中空ポリカーボネート板の斜視図である。It is a perspective view of a hollow polycarbonate board in a first embodiment and a second embodiment.
＜第一実施形態＞
　第一実施形態の複層透光体について説明する。なお、互いに直交する水平二方向をＸ方向及びＹ方向とし、それぞれの方向を矢印Ｘ及び矢印Ｙで示す。Ｘ方向及びＹ方向と直交する鉛直方向をＺ方向とし、その方向を矢印Ｚで示す。また、後述する複層透光体１２は、透光板の一例としてのガラス板５２の面外方向が、Ｙ方向となる状態で設置されている。この状態を基準として、複層透光体１２の構造を説明する。 <First embodiment>
The multilayer transparent body of the first embodiment will be explained. Note that two horizontal directions orthogonal to each other are referred to as the X direction and the Y direction, and the respective directions are indicated by arrows X and Y. The vertical direction perpendicular to the X direction and the Y direction is defined as the Z direction, and this direction is indicated by an arrow Z. Further, the multilayer light-transmitting body 12, which will be described later, is installed such that the out-of-plane direction of the glass plate 52, which is an example of a light-transmitting plate, is the Y direction. The structure of the multilayer transparent body 12 will be explained based on this state.
（構造）
　先ず、複層透光体の構造について説明する。なお、図１は複層透光体の鉛直方向の中央部の水平断面を示す断面図である。図２は複層透光体のＸ方向の中央部の鉛直断面を示す断面図である。 (structure)
First, the structure of the multilayer transparent body will be explained. Note that FIG. 1 is a cross-sectional view showing a horizontal cross section of a vertically central portion of a multilayer transparent body. FIG. 2 is a sectional view showing a vertical cross section of the central portion of the multilayer transparent body in the X direction.
　図１及び図２に示す複層透光体１２は、透光板の一例として二枚のガラス板５２と、二枚のガラス板５２の間に設けられた透光部材１０と、を有している。ガラス板５２及び透光部材１０は、Ｙ方向から見た形状が四角形状である。本実施形態の複層透光体１２は、窓枠１６に取り付けられている。しかし、複層透光体１２の取付対象は、窓枠１６に限定されない。 The multilayer light-transmitting body 12 shown in FIGS. 1 and 2 includes two glass plates 52 as an example of light-transmitting plates, and a light-transmitting member 10 provided between the two glass plates 52. ing. The glass plate 52 and the light-transmitting member 10 have a rectangular shape when viewed from the Y direction. The multilayer transparent body 12 of this embodiment is attached to the window frame 16. However, the object to which the multilayer transparent body 12 is attached is not limited to the window frame 16.
　二枚のガラス板５２の間には、中空層５５が形成されている。二枚のガラス板５２の縁部５３の間には、スペーサー２１が挟まれている。本実施形態では、ガラス板５２の縁部５３とスペーサー２１とは、ブチル系テープ材２２で接着されている。しかし、ガラス板５２の縁部５３とスペーサー２１との接合方法は、適宜変更可能である。また、二枚のガラス板５２の縁部５３の間のスペーサー２１の外側は、閉塞材の一例としてのシリコーン系シーリング材３１によって閉塞されている。 A hollow layer 55 is formed between the two glass plates 52. A spacer 21 is sandwiched between the edges 53 of the two glass plates 52. In this embodiment, the edge 53 of the glass plate 52 and the spacer 21 are bonded together with a butyl tape material 22. However, the method of joining the edge 53 of the glass plate 52 and the spacer 21 can be changed as appropriate. Further, the outside of the spacer 21 between the edges 53 of the two glass plates 52 is closed with a silicone sealing material 31 as an example of a closing material.
　なお、本実施形態のスペーサー２１は、内部が空洞である。このスペーサー２１の空洞部分には、図示されていない乾燥剤が充填されている。しかし、スペーサー２１の構造は、適宜変更可能である。 Note that the spacer 21 of this embodiment is hollow inside. The hollow portion of the spacer 21 is filled with a desiccant (not shown). However, the structure of the spacer 21 can be changed as appropriate.
　中空層５５には、透光部材１０が設けられている。透光部材１０は、透光性樹脂板の一例としての二枚の中空ポリカーボネート板１００と、保持部材１５０（図２及び図３Ｂ参照）と、保持部材１５１（図１及び図３Ａ参照）と、エアロゲル層１３０と、を有して構成されている。エアロゲル層１３０は、二枚の中空ポリカーボネート板１００の間にエアロゲルＮが充填されることで形成されている。本実施形態の中空ポリカーボネート板１００は、Ｙ方向から見ると四角形状とされている。 A light-transmitting member 10 is provided in the hollow layer 55. The light-transmitting member 10 includes two hollow polycarbonate plates 100 as an example of light-transmitting resin plates, a holding member 150 (see FIGS. 2 and 3B), a holding member 151 (see FIGS. 1 and 3A), The airgel layer 130 is configured to include an airgel layer 130. The airgel layer 130 is formed by filling airgel N between two hollow polycarbonate plates 100. The hollow polycarbonate plate 100 of this embodiment has a rectangular shape when viewed from the Y direction.
　図１５に示すように、中空ポリカーボネート板１００は、互いに対向する二枚のポリカーボネート板１０２と、二枚のポリカーボネート板１０２の間に設けられる複数のリブ１０４と、を有している。複数のリブ１０４は、二枚のポリカーボネート板１０２を連結している。これらのポリカーボネート板１０２及びリブ１０４によって、所定方向に並ぶ複数の中空部１０６が形成されている。そして、中空ポリカーボネート板１００の中空部１０６には、エアロゲルＭが充填されている。 As shown in FIG. 15, the hollow polycarbonate plate 100 has two polycarbonate plates 102 facing each other and a plurality of ribs 104 provided between the two polycarbonate plates 102. A plurality of ribs 104 connect two polycarbonate plates 102. These polycarbonate plates 102 and ribs 104 form a plurality of hollow portions 106 aligned in a predetermined direction. The hollow portion 106 of the hollow polycarbonate plate 100 is filled with airgel M.
　図１に示すように、保持部材１５１は、二枚の中空ポリカーボネート板１００のＸ方向に沿った幅方向の側端部１１０Ｘを保持して封止すると共に二枚の中空ポリカーボネート板１００間の外縁部１３２Ｘを封止する。 As shown in FIG. 1, the holding member 151 holds and seals the side edges 110X of the two hollow polycarbonate plates 100 in the width direction along the X direction, and the outer edge between the two hollow polycarbonate plates 100. The portion 132X is sealed.
　図１及び図３Ａに示す保持部材１５１は、枠部１５１Ｃと、枠部１５１Ｃの両側の外端部からそれぞれ突出した２つの外側爪部１５１Ｂと、枠部１５１Ｃにおける２つの外側爪部１５１Ｂの内側から突出する２つの内側爪部１５１Ａと、を有している。 The holding member 151 shown in FIGS. 1 and 3A includes a frame portion 151C, two outer claw portions 151B protruding from both outer ends of the frame portion 151C, and inner sides of the two outer claw portions 151B in the frame portion 151C. It has two inner claw parts 151A protruding from the inner claw part 151A.
　枠部１５１Ｃは、中空ポリカーボネート板１００の側端部１１０Ｘの端面１１２Ｘに沿って設けられている。外側爪部１５１Ｂは、二枚の中空ポリカーボネート板１００における側端部１１０Ｘの外面１１３Ｘに沿ってそれぞれ設けられている。内側爪部１５１Ａは、二枚の中空ポリカーボネート板１００における側端部１１０Ｘの内面１１４Ｘに沿ってそれぞれ設けられている。外側爪部１５１Ｂ及び内側爪部１５１Ａは、中空ポリカーボネート板１００の厚み方向内側、つまりエアロゲル層１３０側に向かって傾斜する。また、保持部材１５１は、中空ポリカーボネート板１００よりも剛性が大きい。また、枠部１５１Ｃは、外側爪部１５１Ｂ及び内側爪部１５１Ａよりも剛性が大きい。 The frame portion 151C is provided along the end surface 112X of the side end portion 110X of the hollow polycarbonate plate 100. The outer claw portions 151B are provided along the outer surfaces 113X of the side ends 110X of the two hollow polycarbonate plates 100, respectively. The inner claw portions 151A are provided along the inner surfaces 114X of the side end portions 110X of the two hollow polycarbonate plates 100, respectively. The outer claw portion 151B and the inner claw portion 151A are inclined toward the inner side in the thickness direction of the hollow polycarbonate plate 100, that is, toward the airgel layer 130 side. Further, the holding member 151 has greater rigidity than the hollow polycarbonate plate 100. Further, the frame portion 151C has greater rigidity than the outer claw portion 151B and the inner claw portion 151A.
　図１に示すように、一対の中空ポリカーボネート板１００の側端部１１０Ｘは、保持部材１５１によって互いに厚み方向内側（エアロゲル層１３０側）に向かって傾斜された状態で保持されている。 As shown in FIG. 1, the side ends 110X of the pair of hollow polycarbonate plates 100 are held by a holding member 151 in a state where they are inclined toward the inner side in the thickness direction (toward the airgel layer 130 side).
　なお、中空ポリカーボネート板１００の剛性とは、ピン固定（ピン支持）されたＸ方向の両側の側端部１１０Ｘを支点として、中空ポリカーボネート板１００がＹ方向に湾曲する場合の曲げ剛性である。 Note that the rigidity of the hollow polycarbonate plate 100 is the bending rigidity when the hollow polycarbonate plate 100 is bent in the Y direction using the pin-fixed (pin-supported) side ends 110X on both sides in the X direction as fulcrums.
　ここで、図１及び後述する図２、図４Ｂ、図５Ｂ等は、判りやすくするために、中空ポリカーボネート板１００の湾曲の度合いを実際の湾曲の度合いよりも大きく図示している。 Here, in FIG. 1 and later-described FIGS. 2, 4B, 5B, etc., the degree of curvature of the hollow polycarbonate plate 100 is illustrated to be larger than the actual degree of curvature in order to make it easier to understand.
　図２に示すように、保持部材１５０は、二枚の中空ポリカーボネート板１００のＺ方向に沿った幅方向の側端部１１０Ｚを保持して封止すると共に二枚の中空ポリカーボネート板１００間の外縁部１３２Ｚを封止する。 As shown in FIG. 2, the holding member 150 holds and seals the side edges 110Z of the two hollow polycarbonate plates 100 in the width direction along the Z direction, and also seals the outer edge between the two hollow polycarbonate plates 100. The portion 132Z is sealed.
　なお、保持部材１５０は、前述の保持部材１５１と同じ構造であるので、保持部材１５０の構造の説明を簡略化する。図２及び図３Ｂに示す保持部材１５０は、枠部１５０Ｃと、枠部１５０Ｃの両側の外端部からそれぞれ突出した２つの外側爪部１５０Ｂと、枠部１５０Ｃにおける２つの外側爪部１５０Ｂの内側から突出する２つの内側爪部１５０Ａと、を有している。外側爪部１５０Ｂ及び内側爪部１５０Ａは、当該外側爪部１５０Ｂ及び内側爪部１５０Ａの厚み方向内側、つまりエアロゲル層１３０側に向かって傾斜する。また、保持部材１５０は、中空ポリカーボネート板１００よりも剛性が大きい。また、枠部１５０Ｃは、外側爪部１５０Ｂ及び内側爪部１５０Ａよりも剛性が大きい。 Note that since the holding member 150 has the same structure as the above-mentioned holding member 151, the explanation of the structure of the holding member 150 will be simplified. The holding member 150 shown in FIGS. 2 and 3B includes a frame portion 150C, two outer claw portions 150B protruding from both outer ends of the frame portion 150C, and inner sides of the two outer claw portions 150B on the frame portion 150C. It has two inner claw parts 150A protruding from the inner claw part 150A. The outer claw portion 150B and the inner claw portion 150A are inclined inward in the thickness direction of the outer claw portion 150B and the inner claw portion 150A, that is, toward the airgel layer 130 side. Further, the holding member 150 has greater rigidity than the hollow polycarbonate plate 100. Furthermore, the frame portion 150C has greater rigidity than the outer claw portion 150B and the inner claw portion 150A.
　これにより、図２に示すように、一対の中空ポリカーボネート板１００の側端部１１０Ｚは、保持部材１５０によって互いに厚み方向内側（エアロゲル層１３０側）に向かって傾斜された状態で保持されている。 As a result, as shown in FIG. 2, the side ends 110Z of the pair of hollow polycarbonate plates 100 are held by the holding member 150 in a state where they are inclined toward the inner side in the thickness direction (toward the airgel layer 130 side).
　なお、中空ポリカーボネート板１００の剛性とは、ピン固定（ピン支持）されたＺ方向の両側の側端部１１０Ｘを支点として、中空ポリカーボネート板１００がＹ方向に湾曲する場合の曲げ剛性である。 Note that the rigidity of the hollow polycarbonate plate 100 is the bending rigidity when the hollow polycarbonate plate 100 is bent in the Y direction using the pin-fixed (pin-supported) side ends 110X on both sides in the Z direction as fulcrums.
　図１及び図２に示すように、二枚の中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚは、内側に向けて傾斜する。図１に示す水平断面では、二枚の中空ポリカーボネート板１００の間に充填されたエアロゲルＮによってエアロゲル層１３０が形成されている。このエアロゲル層１３０から二枚の中空ポリカーボネート板１００の内面に作用する側圧によって、二枚の中空ポリカーボネート板１００が、側端部１１０Ｘ、１１０Ｚから中央部に向かって厚み方向外側にはらんでいる（膨らんでいる）。但し、中空ポリカーボネート板１００とガラス板５２との間には、間隔Ｌが形成されている。図２に示す鉛直断面においても、エアロゲル層１３０から二枚の中空ポリカーボネート板１００に作用する側圧によって、二枚の中空ポリカーボネート板１００が厚み方向外側にはらんでいる（膨らんでいる）。二枚の中空ポリカーボネート板１００のはらみは、下方の方が大きく、上方にいくほど小さくなる。中空ポリカーボネート板１００とガラス板５２との間には、間隔Ｌが形成されている。 As shown in FIGS. 1 and 2, side edges 110X and 110Z of the two hollow polycarbonate plates 100 are inclined inward. In the horizontal cross section shown in FIG. 1, an airgel layer 130 is formed by airgel N filled between two hollow polycarbonate plates 100. Due to the lateral pressure exerted from the airgel layer 130 on the inner surfaces of the two hollow polycarbonate plates 100, the two hollow polycarbonate plates 100 extend outward in the thickness direction from the side edges 110X and 110Z toward the center ( bulging). However, a gap L is formed between the hollow polycarbonate plate 100 and the glass plate 52. Also in the vertical cross section shown in FIG. 2, the two hollow polycarbonate plates 100 bulge outward in the thickness direction due to the lateral pressure acting on the two hollow polycarbonate plates 100 from the airgel layer 130. The distance between the two hollow polycarbonate plates 100 is larger at the bottom and becomes smaller toward the top. A gap L is formed between the hollow polycarbonate plate 100 and the glass plate 52.
　図１及び図２に示すように、保持部材１５０と保持部材１５１との接合部位の隙間は、シリコーン系等のシーリング材、連続発泡ウレタンスポンジ等のフォーム材及びホットメルト系接着剤等を用いて埋められ、当該隙間からエアロゲルＮが漏れ出ない程度に封止されている。 As shown in FIGS. 1 and 2, the gap between the joint between the holding member 150 and the holding member 151 is filled with a sealant such as silicone, a foam material such as open-cell urethane sponge, a hot melt adhesive, etc. The gap is filled in and sealed to such an extent that the airgel N does not leak out from the gap.
　なお、中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚは、保持部材１５０、１５１に摩擦により固定される。しかし、シリコーン系シーリング材等の接着剤を用いて、中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚを保持部材１５０、１５１に固定してもよい。 Note that the side ends 110X and 110Z of the hollow polycarbonate plate 100 are fixed to the holding members 150 and 151 by friction. However, the side ends 110X, 110Z of the hollow polycarbonate plate 100 may be fixed to the holding members 150, 151 using an adhesive such as a silicone sealant.
　以上、説明したように、保持部材１５０、１５１は、透光部材１０の外縁部を封止している。 As described above, the holding members 150 and 151 seal the outer edge of the light-transmitting member 10.
　また、本実施形態における外側爪部１５０Ｂ、１５１Ｂの突出方向の長さと、内側爪部１５０Ａ、１５１Ａの突出方向の長さとは、同じである。しかし、外側爪部１５０Ｂ、１５１Ｂの突出方向の長さと、内側爪部１５０Ａ、１５１Ａの突出方向の長さとは、異なっていてもよい。但し、外側爪部１５０Ｂ、１５１Ｂの突出方向の長さは、内側爪部１５０Ａ、１５１Ａの突出方向の長さ以上であることが望ましい。また、外側爪部１５０Ｂ、１５１Ｂの突出方向の長さは、内側爪部１５０Ａ、１５１Ａの突出方向の長さと同じであることがより望ましい。なお、外側爪部１５０Ｂ、１５１Ｂの突出方向の長さ及び内側爪部１５０Ａ、１５１Ａの突出方向の長さとは、側端部１１０Ｘ、１１０Ｚを保持する長さ（かかり代）である。 Furthermore, the lengths of the outer claw parts 150B and 151B in the protruding direction and the lengths of the inner claw parts 150A and 151A in the protruding direction are the same in this embodiment. However, the lengths of the outer claws 150B, 151B in the protruding direction and the lengths of the inner claws 150A, 151A in the protruding direction may be different. However, it is desirable that the length of the outer claw portions 150B, 151B in the protruding direction is greater than or equal to the length of the inner claw portions 150A, 151A in the protruding direction. Further, it is more desirable that the length of the outer claw portions 150B, 151B in the protruding direction is the same as the length of the inner claw portions 150A, 151A in the protruding direction. Note that the lengths of the outer claws 150B, 151B in the protruding direction and the lengths of the inner claws 150A, 151A in the protruding direction are lengths (hanging allowances) for holding the side ends 110X, 110Z.
　ここで、エアロゲルとは、ゲル中に含まれる溶媒を超臨界乾燥法等によって気体に置換して得られた顆粒又は粉状等で、多孔性の低密度構造体である。また、エアロゲルＭ、Ｎには、シリカフューム、シリカ球状粒子、中空シリカ及び発泡スチロール粒子等の粒子成分が別途入っていてもよい。 Here, the airgel is a porous, low-density structure in the form of granules or powder obtained by replacing the solvent contained in the gel with gas by a supercritical drying method or the like. Furthermore, airgel M and N may additionally contain particle components such as silica fume, spherical silica particles, hollow silica, and expanded polystyrene particles.
（製造方法）
　次に、本実施形態の透光部材１０の製造方法の一例について説明する。なお、以下の製造方法は一例であって、適宜変更可能である。 (Production method)
Next, an example of a method for manufacturing the light-transmitting member 10 of this embodiment will be described. Note that the manufacturing method described below is an example and can be modified as appropriate.
　まず、中空ポリカーボネート板１００を、リブ１０４（図１５参照）に沿った方向、つまり筒状の中空部１０６（図１５参照）の軸方向を鉛直方向として設置する。また、中空ポリカーボネート板１００の上方側の側端部１１０Ｚを除いて、中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚに保持部材１５０、１５１を接合し、中空部１０６及びエアロゲル層１３０の下方の開口端を塞ぐ。そして、中空ポリカーボネート板１００の中空部１０６の上方の開口から、中空部１０６にエアロゲルＭを充填する。なお、中空部１０６にエアロゲルＭを充填する際に、中空ポリカーボネート板１００に振動を与えてもよい。 First, the hollow polycarbonate plate 100 is installed with the direction along the ribs 104 (see FIG. 15), that is, the axial direction of the cylindrical hollow part 106 (see FIG. 15) being the vertical direction. In addition, holding members 150 and 151 are joined to the side edges 110X and 110Z of the hollow polycarbonate plate 100, excluding the upper side edge 110Z of the hollow polycarbonate plate 100, and the lower opening of the hollow portion 106 and the airgel layer 130 is Seal the ends. Then, the airgel M is filled into the hollow part 106 from the opening above the hollow part 106 of the hollow polycarbonate plate 100. Note that when filling the hollow portion 106 with the airgel M, vibration may be applied to the hollow polycarbonate plate 100.
　図４Ａは、上記状態の中空ポリカーボネート板１００のＺ方向の中央部の水平断面である。図５Ａは、上記状態の中空ポリカーボネート板１００のＸ方向の中央部の垂直断面である。なお、図５Ａに示される中空ポリカーボネート板１００の上方側に保持部材１５０を設けた場合、中空ポリカーボネート板１００の曲率は異なる場合があるものの、中空ポリカーボネート板１００が側端部１１０Ｚから幅方向の中央部に向うにしたがって厚み方向内側に湾曲する点で、図４Ａに示される中空ポリカーボネート板１００と同じ形状になる。 FIG. 4A is a horizontal cross section of the center portion in the Z direction of the hollow polycarbonate plate 100 in the above state. FIG. 5A is a vertical cross section of the central portion in the X direction of the hollow polycarbonate plate 100 in the above state. Note that when the holding member 150 is provided on the upper side of the hollow polycarbonate plate 100 shown in FIG. 5A, although the curvature of the hollow polycarbonate plate 100 may be different, the hollow polycarbonate plate 100 is It has the same shape as the hollow polycarbonate plate 100 shown in FIG. 4A in that it curves inward in the thickness direction as it goes toward the end.
　更に、エアロゲルＮを二枚の中空ポリカーボネート板１００の間に充填し、中空ポリカーボネート板１００の上方の側端部１１０Ｚに保持部材１５０を接合して中空部１０６及びエアロゲル層１３０の上方の開口端を塞ぐ。なお、二枚の中空ポリカーボネート板１００の間にエアロゲルＮを充填する際に、中空ポリカーボネート板１００に振動を与えてもよい。 Furthermore, airgel N is filled between the two hollow polycarbonate plates 100, and a holding member 150 is joined to the upper side end 110Z of the hollow polycarbonate plate 100 to close the upper open end of the hollow part 106 and the airgel layer 130. block. Note that when filling airgel N between two hollow polycarbonate plates 100, vibration may be applied to the hollow polycarbonate plates 100.
　図４Ｂは、上記状態の中空ポリカーボネート板１００のＺ方向の中央部の水平断面である。図５Ｂは、上記状態の中空ポリカーボネート板１００のＸ方向の中央部の垂直断面である。 FIG. 4B is a horizontal cross section of the center portion in the Z direction of the hollow polycarbonate plate 100 in the above state. FIG. 5B is a vertical cross section of the central portion in the X direction of the hollow polycarbonate plate 100 in the above state.
（作用及び効果）
　次に、本実施形態の作用及び効果について説明する。 (action and effect)
Next, the functions and effects of this embodiment will be explained.
　本実施形態の透光部材１０では、一対の中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚが、保持部材１５０、１５１によって、互いに厚み方向内側に傾斜した状態で保持されている。 In the light-transmitting member 10 of this embodiment, the side end portions 110X and 110Z of the pair of hollow polycarbonate plates 100 are held by holding members 150 and 151 in a mutually inclined state in the thickness direction.
　そのため、一対の中空ポリカーボネート板１００は、一対の中空ポリカーボネート板１００の間にエアロゲルＮが充填されていない状態では、側端部１１０Ｘ、１１０Ｚから幅方向の中央部に向かうにしたがって厚み方向内側に湾曲する（図４Ａ参照）。これにより、本実施形態は、側端部１１０Ｘ，１１０Ｚが傾斜していない場合と比較し、一対の中空ポリカーボネート板１００の間にエアロゲルＮを充填してエアロゲル層１３０を形成する際に、一対の中空ポリカーボネート板１００が外側へはらむことが抑制される。よって、一対の中空ポリカーボネート板１００の間に、エアロゲルＮが過充填されることが防止又は抑制される。また、中空ポリカーボネート板１００が、ガラス板５２に近接又は接触することが抑制されるため、中空ポリカーボネート板１００とガラス板５２との間隔Ｌが確保される。 Therefore, in a state where airgel N is not filled between the pair of hollow polycarbonate plates 100, the pair of hollow polycarbonate plates 100 curves inward in the thickness direction from the side edges 110X and 110Z toward the center in the width direction. (See Figure 4A). As a result, in this embodiment, when forming the airgel layer 130 by filling airgel N between the pair of hollow polycarbonate plates 100, compared to the case where the side end portions 110X and 110Z are not inclined, The hollow polycarbonate plate 100 is prevented from bulging outward. Therefore, overfilling of the airgel N between the pair of hollow polycarbonate plates 100 is prevented or suppressed. Furthermore, since the hollow polycarbonate plate 100 is prevented from coming close to or in contact with the glass plate 52, the distance L between the hollow polycarbonate plate 100 and the glass plate 52 is secured.
　また、保持部材１５０、１５１によって、一対の中空ポリカーボネート板１００を厚み方向内側に傾斜させた状態で保持することにより、一対の中空ポリカーボネート板１００の間にエアロゲルＮを充填する前において、透光部材１０を運搬又は移動等する際に、一対の中空ポリカーボネート板１００の形態が保持されやすい。 In addition, by holding the pair of hollow polycarbonate plates 100 in a state inclined inward in the thickness direction by the holding members 150 and 151, the light-transmitting member When transporting or moving the hollow polycarbonate plates 100, the shape of the pair of hollow polycarbonate plates 100 is easily maintained.
　ここで、図１４Ａ及び図１４Ｂに示すように、比較例に係る保持部材９５０によって、一対の中空ポリカーボネート板１００を保持した場合を説明する。比較例に係る保持部材９５０では、外側爪部９５０Ｂ及び内側爪部９５０Ａが傾斜してない。 Here, as shown in FIGS. 14A and 14B, a case where a pair of hollow polycarbonate plates 100 are held by a holding member 950 according to a comparative example will be described. In the holding member 950 according to the comparative example, the outer claw portion 950B and the inner claw portion 950A are not inclined.
　図１４Ａに示すように、二枚の中空ポリカーボネート板１００の間にエアロゲルＮを充填する前は、二枚の中空ポリカーボネート板１００は平行している。そして、図１４Ｂに示すように、二枚の中空ポリカーボネート板１００の間にエアロゲルＮを充填すると、エアロゲル層１３０から二枚の中空ポリカーボネート板１００に作用する側圧によって、二枚の中空ポリカーボネート板１００の幅方向の中央部分が互いに離れる方向に湾曲してはらむ。なお、図１４Ｂでは、判り易くするために、実際よりも、二枚の中空ポリカーボネート板１００のはらみ量を大きく図示している。 As shown in FIG. 14A, before the airgel N is filled between the two hollow polycarbonate plates 100, the two hollow polycarbonate plates 100 are parallel to each other. Then, as shown in FIG. 14B, when the airgel N is filled between the two hollow polycarbonate plates 100, the lateral pressure acting on the two hollow polycarbonate plates 100 from the airgel layer 130 causes the two hollow polycarbonate plates 100 to The central portions in the width direction are curved away from each other. In addition, in FIG. 14B, in order to make it easy to understand, the amount of protrusion of the two hollow polycarbonate plates 100 is illustrated larger than in reality.
　そのため、二枚の中空ポリカーボネート板１００に充填されるエアロゲルＮの充填量が多くなる。つまり、二枚の中空ポリカーボネート板１００にエアロゲルＮが過充填される。また、中空ポリカーボネート板１００の幅方向の中央部分がガラス板５２（図１参照）に近接又は接触するため、中空ポリカーボネート板１００とガラス板５２との間隔Ｌが確保されない。 Therefore, the amount of airgel N filled into the two hollow polycarbonate plates 100 increases. That is, the two hollow polycarbonate plates 100 are overfilled with airgel N. Moreover, since the center portion of the hollow polycarbonate plate 100 in the width direction is close to or in contact with the glass plate 52 (see FIG. 1), the distance L between the hollow polycarbonate plate 100 and the glass plate 52 is not secured.
　これに対して本実施形態では、保持部材１５０、１５１によって、中空ポリカーボネート板１００の側端部１１０Ｘ，１１０Ｚを厚み方向内側に傾斜させた状態で保持する。これにより、二枚の中空ポリカーボネート板１００の間にエアロゲルＮを充填してエアロゲル層１３０を形成する際に、一対の中空ポリカーボネート板１００が互いに離れる方向に湾曲するはらみが抑制される。 In contrast, in this embodiment, the side ends 110X, 110Z of the hollow polycarbonate plate 100 are held in a state inclined inward in the thickness direction by the holding members 150, 151. Thereby, when the airgel N is filled between the two hollow polycarbonate plates 100 to form the airgel layer 130, the tendency of the pair of hollow polycarbonate plates 100 to curve away from each other is suppressed.
　なお、本実施形態の中空ポリカーボネート板１００は、ピン固定されたＺ方向の両側の側端部１１０Ｚを支点としてＹ方向に湾曲すると共に、ピン固定されたＸ方向の両側の側端部１１０Ｘを支点としてＹ方向に湾曲する。そのため、中空ポリカーボネート板１００は、角部から中心部に向かって稜線が形成される複雑な湾曲形状となる。更に、本実施形態の中空ポリカーボネート板１００の内部には、Ｚ方向に沿った複数のリブ１０４が形成されている（図１５参照）。そのため、正確には、ピン固定された側端部１１０Ｚを支点としてＹ方向に湾曲する中空ポリカーボネート板１００の曲げ剛性と、ピン固定されたＸ方向の両側の側端部１１０Ｘを支点としてＹ方向に湾曲する中空ポリカーボネート板１００の曲げ剛性と、が異なる。したがって、中空ポリカーボネート板１００の湾曲形状は、更に複雑となる。 Note that the hollow polycarbonate plate 100 of this embodiment curves in the Y direction using the pin-fixed side edges 110Z on both sides in the Z direction as fulcrums, and also curves on both side edges 110X in the X direction that are pin-fixed as fulcrums. It curves in the Y direction. Therefore, the hollow polycarbonate plate 100 has a complicated curved shape in which ridge lines are formed from the corners to the center. Furthermore, a plurality of ribs 104 along the Z direction are formed inside the hollow polycarbonate plate 100 of this embodiment (see FIG. 15). Therefore, to be more precise, the bending rigidity of the hollow polycarbonate plate 100 curves in the Y direction with the pin-fixed side end 110Z as a fulcrum, and the The bending rigidity of the curved hollow polycarbonate plate 100 is different. Therefore, the curved shape of the hollow polycarbonate plate 100 becomes even more complicated.
　ここで、本実施形態では、保持部材１５０、１５１によって、中空ポリカーボネート板１００のはらみが規定値内に納まるように、保持部材１５０、１５１等が設定されている。 Here, in this embodiment, the holding members 150, 151, etc. are set so that the holding members 150, 151 keep the tension of the hollow polycarbonate plate 100 within a specified value.
　中空ポリカーボネート板１００のはらみが規定値内に納まる設定とは、本実施形態の中空ポリカーボネート板１００のはらみが、比較例の保持部材９５０によって、中空ポリカーボネート板１００を保持した場合の中空ポリカーボネート板１００のはらみよりも小さくなる設定が好ましい。 The setting in which the hem of the hollow polycarbonate board 100 is within the specified value means that the hem of the hollow polycarbonate board 100 of this embodiment is the same as that of the hollow polycarbonate board 100 when the hollow polycarbonate board 100 is held by the holding member 950 of the comparative example. It is preferable to set the value to be smaller than the initial value.
　また、中空ポリカーボネート板１００のはらみが規定値内に納まる設定とは、間隔Ｌの設定値からのずれが所定範囲内、例えば、１０％以内に納まる設定がより好ましい。例えば、間隔Ｌの設定値が１０ｍｍである場合、中空ポリカーボネート板１００のはらみが規定値内に納まる設定とは、間隔Ｌが９ｍｍ～１１ｍｍの間に納まる設定となる。また、中空ポリカーボネート板１００のはらみが規定値内に納まる設定とは、例えば、一対の中空ポリカーボネート板１００の間にエアロゲルＮを隙間なく充填する場合のエアロゲルＮの設定量からのずれが、所定範囲内、例えば１０％以内に納まる設定が好ましい。 Further, the setting in which the hem of the hollow polycarbonate plate 100 is within a specified value is more preferably the setting in which the deviation from the set value of the interval L is within a predetermined range, for example, within 10%. For example, when the setting value of the interval L is 10 mm, the setting in which the hem of the hollow polycarbonate plate 100 falls within the specified value is the setting in which the interval L falls within the range of 9 mm to 11 mm. Further, the setting in which the amount of the hollow polycarbonate plates 100 falls within a specified value means, for example, that the deviation from the set amount of airgel N when filling airgel N between a pair of hollow polycarbonate plates 100 without any gaps is within a predetermined range. For example, a setting within 10% is preferable.
　また、複層透光体１２では、一対の中空ポリカーボネート板１００の間にエアロゲル層１３０が形成された透光部材１０が、隣り合うガラス板５２の間の中空層５５に設けられている。これにより、複層透光体１２の断熱性が向上する。また、複層透光体１２では、一対の中空ポリカーボネート板１００のはらみが、保持部材１５０、１５１によって規定値内に納められている。これにより、ガラス板５２と中空ポリカーボネート板１００との接触が防止されるので、複層透光体１２の断熱効果が向上する。 Furthermore, in the multilayer light-transmitting body 12, the light-transmitting member 10 in which the airgel layer 130 is formed between a pair of hollow polycarbonate plates 100 is provided in the hollow layer 55 between the adjacent glass plates 52. This improves the heat insulation properties of the multilayer transparent body 12. Furthermore, in the multilayer transparent body 12, the edges of the pair of hollow polycarbonate plates 100 are kept within a specified value by the holding members 150 and 151. This prevents contact between the glass plate 52 and the hollow polycarbonate plate 100, thereby improving the heat insulation effect of the multilayer transparent body 12.
　また、一対の中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚは、保持部材１５０、１５１によって互いに厚み方向内側に傾斜された状態で保持されている。そのため、例えば、エアロゲル層１３０の上端部分のように、エアロゲル層１３０から一対の中空ポリカーボネート板１００に作用する側圧が低い部分でも、一対の中空ポリカーボネート板１００からエアロゲル層１３０に圧縮力が付与される。この圧縮力によって、エアロゲル層１３０の振動等によるエアロゲルの移動が抑制されるため、振動等によるエアロゲルＮの沈降が防止又は抑制される。 Furthermore, the side end portions 110X and 110Z of the pair of hollow polycarbonate plates 100 are held by holding members 150 and 151 in a state in which they are inclined mutually inward in the thickness direction. Therefore, for example, even in areas where the lateral pressure acting on the pair of hollow polycarbonate plates 100 from the airgel layer 130 is low, such as the upper end portion of the airgel layer 130, compressive force is applied from the pair of hollow polycarbonate plates 100 to the airgel layer 130. . This compressive force suppresses movement of the airgel due to vibrations of the airgel layer 130, and thus prevents or suppresses sedimentation of the airgel N due to vibrations or the like.
　また、一対の中空ポリカーボネート板１００が仮に熱によって伸長しても、一対の中空ポリカーボネート板１００からエアロゲル層１３０に圧縮力が作用するので、エアロゲルＮの沈降が抑制される。 Furthermore, even if the pair of hollow polycarbonate plates 100 are expanded due to heat, a compressive force acts on the airgel layer 130 from the pair of hollow polycarbonate plates 100, so that sedimentation of the airgel N is suppressed.
　また、保持部材１５０は、中空ポリカーボネート板１００よりも剛性が大きい。そのため、エアロゲル層１３０から外側爪部１５０Ｂ、１５１Ｂ及び内側爪部１５０Ａ、１５１Ａに側圧が作用しても、外側爪部１５０Ｂ、１５１Ｂ及び内側爪部１５０Ａ、１５１Ａが倒れることがない。よって、保持部材１５０によって、中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚを互いに厚み方向内側に傾斜させた状態で保持し続けることができる。 Additionally, the holding member 150 has greater rigidity than the hollow polycarbonate plate 100. Therefore, even if lateral pressure is applied from the airgel layer 130 to the outer claws 150B, 151B and the inner claws 150A, 151A, the outer claws 150B, 151B and the inner claws 150A, 151A do not fall down. Therefore, the holding member 150 can continue to hold the side ends 110X and 110Z of the hollow polycarbonate plate 100 in a state in which they are mutually inclined inward in the thickness direction.
　ここで、中空ポリカーボネート板１００の面外方向の力に抵抗する各部材の剛性は、前述したように、以下の関係になっている。
　枠部１５０Ｃ、１５１Ｃ＞外側爪部１５０Ｂ、１５１Ｂ及び内側爪部１５０Ａ、１５１Ａ＞中空ポリカーボネート板１００ Here, as described above, the rigidity of each member that resists the force in the out-of-plane direction of the hollow polycarbonate plate 100 has the following relationship.
Frame portions 150C, 151C>Outer claw portions 150B, 151B and inner claw portions 150A, 151A>Hollow polycarbonate plate 100
　エアロゲル層１３０から中空ポリカーボネート板１００に作用する側圧によって、中空ポリカーボネート板１００に生じるモーメントには、外側爪部１５０Ｂ、１５１Ｂ及び内側爪部１５０Ａ、１５１Ａが抵抗する。外側爪部１５０Ｂ、１５１Ｂ及び内側爪部１５０Ａ、１５１Ａに生じるモーメントには、枠部１５０Ｃ、１５１Ｃが抵抗する。このとき、枠部１５０Ｃ、１５１Ｃと外側爪部１５０Ｂ、１５１Ｂ及び内側爪部１５０Ａ、１５１Ａとに変形が生じると、中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚがみかけ上回転し、この回転角に応じて中空ポリカーボネート板１００の中央位置のたわみが大きくなる。 The outer claw portions 150B, 151B and the inner claw portions 150A, 151A resist the moment generated in the hollow polycarbonate plate 100 due to the lateral pressure acting on the hollow polycarbonate plate 100 from the airgel layer 130. The frame portions 150C, 151C resist the moment generated in the outer claw portions 150B, 151B and the inner claw portions 150A, 151A. At this time, if deformation occurs in the frame portions 150C, 151C, the outer claw portions 150B, 151B, and the inner claw portions 150A, 151A, the side end portions 110X, 110Z of the hollow polycarbonate plate 100 apparently rotate, and this rotation angle Accordingly, the deflection at the center of the hollow polycarbonate plate 100 increases.
　そのため、中空ポリカーボネート板１００の中央位置のたわみの発生を抑制するための各部材の剛性の序列は、以下となる。
　枠部１５０Ｃ、１５１Ｃ≧外側爪部１５０Ｂ、１５１Ｂ及び内側爪部１５０Ａ、１５１Ａ＞中空ポリカーボネート板１００
　また、中空ポリカーボネート板１００の中央位置のたわみの発生を抑制するための各部材の剛性の序列は、以下の方が好ましい。
　枠部１５０Ｃ、１５１Ｃ＞外側爪部１５０Ｂ、１５１Ｂ及び内側爪部１５０Ａ、１５１Ａ＞中空ポリカーボネート板１００ Therefore, the order of rigidity of each member for suppressing the occurrence of deflection at the center position of the hollow polycarbonate plate 100 is as follows.
Frame portions 150C, 151C≧Outer claw portions 150B, 151B and inner claw portions 150A, 151A>Hollow polycarbonate plate 100
Furthermore, the order of rigidity of each member for suppressing the occurrence of deflection at the center position of the hollow polycarbonate plate 100 is preferably as follows.
Frame portions 150C, 151C>Outer claw portions 150B, 151B and inner claw portions 150A, 151A>Hollow polycarbonate plate 100
（計算例）
　つぎに、中空ポリカーボネート板１００のたわみ量の計算の一例を図６、図７、及び図８を用いて説明する。なお、図８では、説明を判りやすくするために、保持部材１５１の内側爪部１５１Ａが傾斜していない。 (calculation example)
Next, an example of calculating the amount of deflection of the hollow polycarbonate plate 100 will be explained using FIGS. 6, 7, and 8. Note that in FIG. 8, the inner claw portion 151A of the holding member 151 is not inclined in order to make the explanation easier to understand.
　まず、図８に示すように、中空ポリカーボネート板１００を保持部材１５１で湾曲固定させる場合の中空ポリカーボネート板１００の最大たわみ量を、二枚の中空ポリカーボネート板１００が接するときのたわみ量とする。 First, as shown in FIG. 8, the maximum amount of deflection of the hollow polycarbonate plate 100 when the hollow polycarbonate plate 100 is curved and fixed by the holding member 151 is the amount of deflection when the two hollow polycarbonate plates 100 are in contact.
　中空ポリカーボネート板１００の厚み方向の中心線をＣＨ、エアロゲル層１３０の厚みをｔ、中空ポリカーボネート板１００のＸ方向の幅をＬ、中空ポリカーボネート板１００の最大たわみ量をδＭＡＸ、そのときの中空ポリカーボネート板１００の回転角（最大回転角）をΘＭＡＸとすると、以下の（式１）及び（式２）が得られる。
　δＭＡＸ＝ｔ/２・・・・（式１）
　ΘＭＡＸ＝ｔ/Ｌ・・・・（式２） The center line in the thickness direction of the hollow polycarbonate plate 100 is CH, the thickness of the airgel layer 130 is t, the width of the hollow polycarbonate plate 100 in the X direction is L, the maximum deflection amount of the hollow polycarbonate plate 100 is δMAX, and the hollow polycarbonate plate at that time is If the rotation angle (maximum rotation angle) of 100 is ΘMAX, the following (Formula 1) and (Formula 2) are obtained.
δMAX=t/2...(Formula 1)
ΘMAX=t/L...(Formula 2)
　よって、保持部材１５１により、中空ポリカーボネート板１００の側端部１１０Ｘは、回転角０ｒａｄ～ｔ/Ｌｒａｄで固定され保持される。中空ポリカーボネート板１００のＸ方向幅を３００ｍｍ（＝Ｌ）、中空ポリカーボネート板１００のＺ方向幅を１０００ｍｍ、中空ポリカーボネート板１００の厚みを４ｍｍとする。また、図８に示すように、間隔を空けて対向する２枚の中空ポリカーボネート板１００の側端部１１０Ｘの間隔ｔを５ｍｍとする。 Therefore, the side end portion 110X of the hollow polycarbonate plate 100 is fixed and held at a rotation angle of 0rad to t/Lrad by the holding member 151. The width of the hollow polycarbonate plate 100 in the X direction is 300 mm (=L), the width of the hollow polycarbonate plate 100 in the Z direction is 1000 mm, and the thickness of the hollow polycarbonate plate 100 is 4 mm. Further, as shown in FIG. 8, the interval t between the side edges 110X of the two hollow polycarbonate plates 100 facing each other with an interval between them is 5 mm.
　図６は、この中空ポリカーボネート板１００の剛性を、曲げモーメントと側端部１１０Ｘの回転角曲線との関係で示したグラフである。 FIG. 6 is a graph showing the rigidity of the hollow polycarbonate plate 100 in relation to the bending moment and the rotation angle curve of the side end portion 110X.
　図７は、図６における弾性域ＤＳ（直線部分）を示し、弾性域ＤＳ（直線部分）の近似式は、以下の（式３）となる。
　ｙ＝１６５７ｘ－１．０８３２（式３） FIG. 7 shows the elastic region DS (straight line portion) in FIG. 6, and the approximate expression for the elastic region DS (straight line portion) is the following (Formula 3).
y=1657x-1.0832 (formula 3)
　上記条件の場合で、側端部１１０Ｘ両端をピン固定としたとき、二枚の中空ポリカーボネート板１００の間にエアロゲルＮを充填することにより形成されたエアロゲル層１３０から、１枚の中空ポリカーボネート板１００に作用する側圧は、エアロゲル層１３０の体積と、エアロゲルＮの密度と、荷重を受ける中空ポリカーボネート板１００の面積とによって求められる。例えば、密度８０ｇ／Ｌ（リットル）のエアロゲルＮを湾曲固定していない２枚の中空ポリカーボネート板１００の間に充填する場合、エアロゲルＮの体積（１．５Ｌ＝５[ｍｍ]×３００[ｍｍ]×１０００[ｍｍ]）に密度８０ｇ／Ｌを乗じて求められるエアロゲル層１３０の重量（１２０ｇ）の半分の重量（６０ｇ）が、１枚の中空ポリカーボネート板１００に作用する。この際、中空ポリカーボネート板１００のＸ方向に沿った断面において、中空ポリカーボネート板１００に作用する等分布荷重は、０．２ｇ／ｍｍ（＝６０[ｇ]／３００[ｍｍ]）となる。また、中空ポリカーボネート板１００の幅方向の中央部に作用する線荷重は、０．００１９６Ｎ／ｍｍ（＝０．２[ｇ／ｍｍ]×９．８／１０００）となる。このときの側端部１１０Ｘに発生する曲げモーメントは２２．０５Ｎ・ｍｍ（＝０．００１９６[Ｎ／ｍｍ]×３００２[ｍｍ]／８）となる。 In the case of the above conditions, when both ends of the side end 110X are fixed with pins, one hollow polycarbonate plate 100 is formed from the airgel layer 130 formed by filling airgel N between two hollow polycarbonate plates 100. The lateral pressure acting on is determined by the volume of the airgel layer 130, the density of the airgel N, and the area of the hollow polycarbonate plate 100 that receives the load. For example, when filling airgel N with a density of 80 g/L (liter) between two hollow polycarbonate plates 100 that are not curved and fixed, the volume of airgel N (1.5 L = 5 [mm] x 300 [mm] x 1000 [mm]) by the density of 80 g/L acts on one hollow polycarbonate plate 100, which is half the weight (60 g) of the weight (120 g) of the airgel layer 130. At this time, the uniformly distributed load acting on the hollow polycarbonate plate 100 in the cross section along the X direction of the hollow polycarbonate plate 100 is 0.2 g/mm (=60 [g]/300 [mm]). Further, the line load acting on the center portion of the hollow polycarbonate plate 100 in the width direction is 0.00196 N/mm (=0.2 [g/mm]×9.8/1000). The bending moment generated at the side end portion 110X at this time is 22.05 N·mm (=0.00196 [N/mm]×300 2 [mm]/8).
　この値を上記（式３）に代入すると、側端部１１０Ｘに発生する回転角は０．０１４ｒａｄとなる。
　そして、側端部１１０Ｘの回転角が０．０１４ｒａｄのときの中空ポリカーボネート板１００の中央部のたわみ量は２．０９ｍｍとなる。 When this value is substituted into the above (Equation 3), the rotation angle generated at the side end portion 110X becomes 0.014 rad.
When the rotation angle of the side end portions 110X is 0.014 rad, the amount of deflection at the center of the hollow polycarbonate plate 100 is 2.09 mm.
　また、上記（式１）と（式２）より、本条件におけるδＭＡＸは２．５ｍｍであり、ΘＭＡＸは０．０１６ｒａｄである。 Also, from the above (Formula 1) and (Formula 2), δMAX under this condition is 2.5 mm, and ΘMAX is 0.016 rad.
　本条件では、エアロゲル層１３０から中空ポリカーボネート板１００に作用する側圧によって発生する側端部１１０Ｘの回転角０．０１４ｒａｄを、あらかじめ中空ポリカーボネート板１００の側端部１１０Ｘに発生させて固定することで、中空ポリカーボネート板１００のはらみが抑制される。この結果、二枚の中空ポリカーボネート板１００の間に規定量のエアロゲルＮを充填することができる。 Under these conditions, a rotation angle of 0.014 rad of the side edge 110X generated by the lateral pressure acting on the hollow polycarbonate plate 100 from the airgel layer 130 is generated in advance at the side edge 110X of the hollow polycarbonate plate 100 and fixed. The swelling of the hollow polycarbonate plate 100 is suppressed. As a result, a prescribed amount of airgel N can be filled between the two hollow polycarbonate plates 100.
　なお、上記計算は、中空ポリカーボネート板１００が、ピン固定されたＸ方向の両側の側端部１１０Ｘを支点としてＹ方向に湾曲する場合の計算例である。 Note that the above calculation is an example of calculation when the hollow polycarbonate plate 100 curves in the Y direction using the pin-fixed side ends 110X on both sides in the X direction as fulcrums.
　しかし、上記第一実施形態の中空ポリカーボネート板１００は、前述したように、ピン固定されたＺ方向の両側の側端部１１０Ｚを支点としてＹ方向にも湾曲する。また、中空ポリカーボネート板１００の内部には、Ｚ方向に沿った複数のリブ１０４が形成されている（図１５参照）。そのため、上記第一実施形態の中空ポリカーボネート板１００は、複雑な湾曲形状となる。したがって、上記計算例は、上記第一実施形態の正確な計算例として利用することはできないが、上記第一実施形態の簡易的な計算例として利用することができる。なお、正確に中空ポリカーボネート板１００の湾曲形状及び回転角等を求める場合は、コンピュータを用いた数値解析或いは試作品による実験等の結果から、湾曲形状及び回転角等を求めればよい。 However, as described above, the hollow polycarbonate plate 100 of the first embodiment is also curved in the Y direction using the pin-fixed side ends 110Z on both sides in the Z direction as fulcrums. Furthermore, inside the hollow polycarbonate plate 100, a plurality of ribs 104 are formed along the Z direction (see FIG. 15). Therefore, the hollow polycarbonate plate 100 of the first embodiment has a complicated curved shape. Therefore, although the above calculation example cannot be used as an accurate calculation example of the first embodiment, it can be used as a simple calculation example of the first embodiment. Note that in order to accurately determine the curved shape, rotation angle, etc. of the hollow polycarbonate plate 100, the curved shape, rotation angle, etc. may be determined from the results of numerical analysis using a computer or experiments using a prototype.
（実験例）
　つぎに、上記第一実施形態の透光部材１０における一対の中空ポリカーボネート板１００のはらみを抑制することで、エアロゲルＮの過充填が抑制されることを確認した実験例について説明する。 (Experiment example)
Next, an experimental example in which it was confirmed that overfilling of airgel N can be suppressed by suppressing the pair of hollow polycarbonate plates 100 in the light-transmitting member 10 of the first embodiment will be described.
　具体的には、図１、図２、図４Ａ、図４Ｂ、図５Ａ、及び図５Ｂに示す第一実施形態の透光部材１０と、図１４Ａ及び図１４Ｂに示す比較例の透光部材９００と、でエアロゲルＮの過充填を比較する。なお、下記の条件で、第一実施形態の透光部材１０と比較例の透光部材９００とを比較した。 Specifically, the light-transmitting member 10 of the first embodiment shown in FIGS. 1, 2, 4A, 4B, 5A, and 5B, and the light-transmitting member 900 of the comparative example shown in FIGS. 14A and 14B. Compare the overfilling of airgel N with and . Note that the light-transmitting member 10 of the first embodiment and the light-transmitting member 900 of the comparative example were compared under the following conditions.
　実験に用いた本実施形態の透光部材１０には、中空ポリカーボネート板１００でなく、２ｍｍ厚の中実のポリカーボネート板を用いた。また、実験に用いた比較例の透光部材９００には、エアロゲルを中空部に充填していない４ｍｍ厚の中空のポリカーボネート板を用いた。 For the light-transmitting member 10 of this embodiment used in the experiment, a solid polycarbonate plate with a thickness of 2 mm was used instead of the hollow polycarbonate plate 100. In addition, for the light-transmitting member 900 of the comparative example used in the experiment, a hollow polycarbonate plate with a thickness of 4 mm in which the hollow portion was not filled with airgel was used.
　また、実験に用いた本実施形態の保持部材１５０、１５１は、ＡＳＡ樹脂で構成されている。実験に用いた本実施形態の内側爪部１５０Ａ、１５１Ａ及び外側爪部１５０Ｂ、１５１Ｂの板厚は１．０ｍｍである。実験に用いた本実施形態の枠部１５０Ｃ、１５１Ｃの板厚は１．５ｍｍである。同様に、実験に用いた比較例の保持部材９５０は、ＡＳＡ樹脂で構成されている。実験に用いた比較例の内側爪部９５０Ａ、外側爪部９５０Ｂ及び枠部９５０Ｃの板厚は０．５ｍｍである。 Further, the holding members 150 and 151 of this embodiment used in the experiment are made of ASA resin. The inner claw portions 150A, 151A and the outer claw portions 150B, 151B of this embodiment used in the experiment had a thickness of 1.0 mm. The plate thickness of the frame portions 150C and 151C of this embodiment used in the experiment is 1.5 mm. Similarly, the holding member 950 of the comparative example used in the experiment is made of ASA resin. The inner claw portion 950A, outer claw portion 950B, and frame portion 950C of the comparative example used in the experiment had a thickness of 0.5 mm.
　また、実験に用いた本実施形態の一対のポリカーボネート板の間のエアロゲル層の大きさは、高さ１.５ｍ、幅０．３ｍ、厚み９ｍｍである。実験に用いた本実施形態の一対のポリカーボネート板の間に充填されるエアロゲルＮの規定量αは３１１.８５ｇである。なお、エアロゲル層の大きさ及びエアロゲルＮの規定の充填量は、一対のポリカーボネート板が湾曲していない場合の数値である。また、本実験に用いたエアロゲルＮは、平均粒子径が約３ｍｍであり、密度が７７ｇ/Ｌ（リットル）である。 Furthermore, the size of the airgel layer between the pair of polycarbonate plates of this embodiment used in the experiment was 1.5 m in height, 0.3 m in width, and 9 mm in thickness. The specified amount α of airgel N filled between the pair of polycarbonate plates of this embodiment used in the experiment was 311.85 g. Note that the size of the airgel layer and the prescribed filling amount of airgel N are values when the pair of polycarbonate plates are not curved. Furthermore, the airgel N used in this experiment has an average particle diameter of about 3 mm and a density of 77 g/L (liter).
　実験に用いた比較例の一対のポリカーボネート板の間のエアロゲル層の大きさは、高さ１.０ｍ、幅０．３ｍ、厚み５ｍｍである。比較例の一対のポリカーボネート板の間に充填されるエアロゲルＮの規定量αは１１５．５ｇである。同様にエアロゲルＮは、平均粒子径が約３ｍｍであり、密度は７７ｇ/Ｌである。 The size of the airgel layer between a pair of polycarbonate plates in the comparative example used in the experiment was 1.0 m in height, 0.3 m in width, and 5 mm in thickness. The specified amount α of airgel N filled between a pair of polycarbonate plates in the comparative example is 115.5 g. Similarly, Airgel N has an average particle diameter of about 3 mm and a density of 77 g/L.
　また、エアロゲルＮは、振動を与えながら一対のポリカーボネート板の間に充填した。具体的には、上方側の側端部を除いて保持部材１５０、１５１、９５０を接合した一対のポリカーボネート板（図４Ａ及び図５Ａを参照）を木製等の板材の上に載せて固定する。そして、ボールバイブ等の振動装置で板材を振動させた状態で、一対のポリカーボネート板の間にエアロゲルＮを自由落下させて充填する。 Additionally, Airgel N was filled between a pair of polycarbonate plates while being vibrated. Specifically, a pair of polycarbonate plates (see FIGS. 4A and 5A) to which holding members 150, 151, and 950 are joined except for the upper side edges are placed and fixed on a plate material such as wood. Then, while the plate material is vibrated with a vibration device such as a ball vibrator, the airgel N is allowed to freely fall and fill between the pair of polycarbonate plates.
　この結果、本実施形態の保持部材１５０、１５１を用いた場合のエアロゲルＮの充填量βは３２１．８９ｇであった。よって、比率β／αは、１．０３である。比較例の保持部材９５０を用いた場合のエアロゲルＮの充填量βは、１６８．４５ｇであった。よって、比率β／αは、１．４６である。 As a result, the filling amount β of airgel N when using the holding members 150 and 151 of this embodiment was 321.89 g. Therefore, the ratio β/α is 1.03. The filling amount β of airgel N when using the holding member 950 of the comparative example was 168.45 g. Therefore, the ratio β/α is 1.46.
　このように、本実施形態の保持部材１５０、１５１を用いた場合のエアロゲルＮの充填量βは、規定量αとほぼ同等となった。しかし、比較例の保持部材９５０を用いた場合のエアロゲルＮの充填量βは、規定量αよりも１．５倍近く多くなり、エアロゲルＮの充填量が過大となった。つまり、本実施形態の透光部材１０では、エアロゲルＮの過充填が抑制されていることが本実験例で確認された。 In this way, the filling amount β of airgel N when using the holding members 150 and 151 of this embodiment was approximately equal to the specified amount α. However, when the holding member 950 of the comparative example was used, the filling amount β of airgel N was nearly 1.5 times larger than the specified amount α, and the filling amount of airgel N was excessive. In other words, it was confirmed in this experimental example that overfilling of airgel N was suppressed in the light-transmitting member 10 of this embodiment.
＜第二実施形態＞
　次に、第二実施形態の複層透光体について説明する。なお、第二実施形態において、第一実施形態と同一の部材には第一実施形態と同一の符号を付し、第一実施形態と同一の部材の説明は簡略化又は省略する。また、第二実施形態と第一実施形態とは、透光部材の保持部材が異なるだけである。よって、第二実施形態の保持部材以外の部材の説明は簡略化又は省略する。 <Second embodiment>
Next, a multilayer transparent body according to the second embodiment will be described. In addition, in the second embodiment, the same members as in the first embodiment are given the same reference numerals as in the first embodiment, and descriptions of the same members as in the first embodiment are simplified or omitted. Further, the second embodiment and the first embodiment differ only in the holding member for the light-transmitting member. Therefore, the description of members other than the holding member of the second embodiment will be simplified or omitted.
（構造）
　先ず、複層透光体の構造について説明する。なお、図９は複層透光体の鉛直方向の中央部の水平断面の断面図である。図１０は複層透光体のＸ方向の中央部の鉛直断面の断面図である。 (structure)
First, the structure of the multilayer transparent body will be explained. Note that FIG. 9 is a cross-sectional view of a horizontal cross section of the vertical center of the multilayer transparent body. FIG. 10 is a sectional view of a vertical cross section of the central portion of the multilayer transparent body in the X direction.
　図９及び図１０に示す複層透光体１３は、透光板の一例として二枚のガラス板５２と、二枚のガラス板５２の間に設けられた透光部材１１と、を有している。 The multilayer light-transmitting body 13 shown in FIGS. 9 and 10 includes two glass plates 52 as an example of light-transmitting plates, and a light-transmitting member 11 provided between the two glass plates 52. ing.
　二枚のガラス板５２の間の中空層５５には、透光部材１１が設けられている。透光部材１１は、透光性樹脂板の一例としての二枚の中空ポリカーボネート板１００と、保持部材２５０（図１０及び図１１Ｂ参照）と、保持部材２５１（図９及び図１１Ａ参照）と、エアロゲル層１３０と、を有して構成されている。エアロゲル層１３０は、二枚の中空ポリカーボネート板１００の間にエアロゲルＮが充填されることで形成されている。 A light-transmitting member 11 is provided in the hollow layer 55 between the two glass plates 52. The light-transmitting member 11 includes two hollow polycarbonate plates 100 as an example of light-transmitting resin plates, a holding member 250 (see FIGS. 10 and 11B), and a holding member 251 (see FIGS. 9 and 11A). The airgel layer 130 is configured to include an airgel layer 130. The airgel layer 130 is formed by filling airgel N between two hollow polycarbonate plates 100.
　図９に示す保持部材２５１は、二枚の中空ポリカーボネート板１００のＸ方向に沿った幅方向の側端部１１０Ｘを保持して封止すると共に二枚の中空ポリカーボネート板１００間の外縁部１３２Ｘを封止する。 The holding member 251 shown in FIG. 9 holds and seals the side edges 110X of the two hollow polycarbonate plates 100 in the width direction along the X direction, and also protects the outer edge 132X between the two hollow polycarbonate plates 100. Seal.
　図９及び図１１Ａに示す保持部材２５１は、枠部２５１Ｂと、枠部２５１Ｂの外端部から突出した外側爪部２５１Ａと、を有している。別の観点から説明すると、保持部材２５１は、第一実施形態の保持部材１５１から内側爪部１５１Ａ（図３Ａ参照）を省略した構成と同じである。 The holding member 251 shown in FIGS. 9 and 11A includes a frame portion 251B and an outer claw portion 251A protruding from the outer end of the frame portion 251B. To explain from another point of view, the holding member 251 has the same structure as the holding member 151 of the first embodiment except that the inner claw portion 151A (see FIG. 3A) is omitted.
　枠部２５１Ｂは、中空ポリカーボネート板１００の側端部１１０Ｘの端面１１２Ｘに沿って設けられている。外側爪部２５１Ａは、側端部１１０Ｘの外面１１３Ｘに沿って設けられている。外側爪部２５１Ａは、中空ポリカーボネート板１００の厚み方向内側、つまりエアロゲル層１３０側に向かって傾斜する。また、保持部材２５１は、中空ポリカーボネート板１００よりも剛性が大きい。また、枠部２５１Ｂは、外側爪部２５１Ａよりも剛性が大きい。 The frame portion 251B is provided along the end surface 112X of the side end portion 110X of the hollow polycarbonate plate 100. The outer claw portion 251A is provided along the outer surface 113X of the side end portion 110X. The outer claw portion 251A is inclined inward in the thickness direction of the hollow polycarbonate plate 100, that is, toward the airgel layer 130 side. Furthermore, the holding member 251 has greater rigidity than the hollow polycarbonate plate 100. Furthermore, the frame portion 251B has greater rigidity than the outer claw portion 251A.
　これにより、図９に示すように、一対の中空ポリカーボネート板１００の側端部１１０Ｘは、保持部材２５１によって互いに厚み方向内側（エアロゲル層１３０側）に向かって傾斜された状態で保持されている。 As a result, as shown in FIG. 9, the side ends 110X of the pair of hollow polycarbonate plates 100 are held by the holding member 251 in a state where they are inclined toward the inner side in the thickness direction (toward the airgel layer 130 side).
　なお、中空ポリカーボネート板１００の剛性とは、ピン固定されたＸ方向の両側の側端部１１０Ｘを支点として、中空ポリカーボネート板１００がＹ方向に湾曲する場合の曲げ剛性である。 Note that the rigidity of the hollow polycarbonate plate 100 is the bending rigidity when the hollow polycarbonate plate 100 is bent in the Y direction using the pin-fixed side ends 110X on both sides in the X direction as fulcrums.
　ここで、図９及び後述する図１２Ｂ等は、判りやすくするために、中空ポリカーボネート板１００の湾曲の度合いを実際の湾曲の度合いよりも大きく図示している。 Here, in FIG. 9 and FIG. 12B to be described later, etc., the degree of curvature of the hollow polycarbonate plate 100 is illustrated to be larger than the actual degree of curvature in order to make it easier to understand.
　図１０に示す保持部材２５０は、二枚の中空ポリカーボネート板１００のＺ方向に沿った幅方向の側端部１１０Ｚを保持して封止すると共に二枚の中空ポリカーボネート板１００間の外縁部１３２Ｚを封止する。 The holding member 250 shown in FIG. 10 holds and seals the side edges 110Z of the two hollow polycarbonate plates 100 in the width direction along the Z direction, and also holds the outer edge 132Z between the two hollow polycarbonate plates 100. Seal.
　図１０及び図１１Ｂに示す保持部材２５０は、枠部２５０Ｂと、枠部２５０Ｂの外端部から突出した外側爪部２５０Ａと、を有している。 The holding member 250 shown in FIGS. 10 and 11B includes a frame portion 250B and an outer claw portion 250A protruding from the outer end of the frame portion 250B.
　枠部２５０Ｂは、中空ポリカーボネート板１００の側端部１１０Ｚの端面１１２Ｚに沿って設けられている。外側爪部２５０Ａは、側端部１１０Ｚの外面１１３Ｚに沿って設けられている。外側爪部２５０Ａは、枠部２５０Ｂに対して直交しており、枠部２５０Ｂに対して傾斜していない。また、保持部材２５０は、中空ポリカーボネート板１００よりも剛性が大きい。また、枠部２５０Ｂは、外側爪部２５０Ａよりも剛性が大きい。 The frame portion 250B is provided along the end surface 112Z of the side end portion 110Z of the hollow polycarbonate plate 100. The outer claw portion 250A is provided along the outer surface 113Z of the side end portion 110Z. The outer claw portion 250A is perpendicular to the frame portion 250B and is not inclined with respect to the frame portion 250B. Further, the holding member 250 has greater rigidity than the hollow polycarbonate plate 100. Furthermore, the frame portion 250B has greater rigidity than the outer claw portion 250A.
　なお、中空ポリカーボネート板１００の剛性とは、ピン固定されたＺ方向の両側の側端部１１０Ｚを支点として、中空ポリカーボネート板１００がＹ方向に湾曲する場合の曲げ剛性である。 Note that the rigidity of the hollow polycarbonate plate 100 is the bending rigidity when the hollow polycarbonate plate 100 is bent in the Y direction using the pin-fixed side ends 110Z on both sides in the Z direction as fulcrums.
　ここで、図１０及び後述する図１３Ｂでは、二枚の中空ポリカーボネート板１００は平行又は略平行であるが、実際には二枚の中空ポリカーボネート板１００の中央部分が若干外側にはらむ。 Here, in FIG. 10 and FIG. 13B described later, the two hollow polycarbonate plates 100 are parallel or approximately parallel, but in reality, the center portions of the two hollow polycarbonate plates 100 are slightly angled outward.
　図９に示すように、二枚の中空ポリカーボネート板１００の側端部１１０Ｘは、厚み方向内側に向けて傾斜する。また、二枚の中空ポリカーボネート板１００は、エアロゲル層１３０から二枚の中空ポリカーボネート板１００に作用する側圧によって、側端部１１０Ｘから中央部に向かって厚み方向外側にはらんでいる（膨らんでいる）。但し、中空ポリカーボネート板１００とガラス板５２との間には、間隔Ｌが形成されている。 As shown in FIG. 9, the side edges 110X of the two hollow polycarbonate plates 100 are inclined inward in the thickness direction. In addition, the two hollow polycarbonate plates 100 bulge outward in the thickness direction from the side edges 110X toward the center due to the lateral pressure acting on the two hollow polycarbonate plates 100 from the airgel layer 130. ). However, a gap L is formed between the hollow polycarbonate plate 100 and the glass plate 52.
　図１０に示すように、二枚の中空ポリカーボネート板１００は、平行又は略平行である。但し、中空ポリカーボネート板１００とガラス板５２との間には、間隔Ｌが形成されている。 As shown in FIG. 10, the two hollow polycarbonate plates 100 are parallel or substantially parallel. However, a gap L is formed between the hollow polycarbonate plate 100 and the glass plate 52.
　なお、保持部材２５０と保持部材２５１との接合部位の隙間は、シリコーン系等のシーリング材、連続発泡ウレタンスポンジ等のフォーム材及びホットメルト系接着剤等を用いて埋められ、当該隙間からエアロゲルＮが漏れ出ない程度に封止されている。 Note that the gap between the joint portion of the holding member 250 and the holding member 251 is filled with a sealant such as silicone, a foam material such as open-cell urethane sponge, a hot melt adhesive, etc., and the airgel N is filled from the gap. It is sealed to the extent that it does not leak.
　また、中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚは、保持部材２５０、２５１にシリコーン系シーリング材等の接着剤を用いて固定されている。 Furthermore, the side ends 110X and 110Z of the hollow polycarbonate plate 100 are fixed to the holding members 250 and 251 using an adhesive such as a silicone sealant.
　以上、説明したように、保持部材２５０、２５１は、透光部材１１の外縁部を封止している。 As described above, the holding members 250 and 251 seal the outer edge of the light-transmitting member 11.
（製造方法）
　次に、本実施形態の透光部材１０の製造方法の一例について説明する。なお、以下の製造方法は、一例であって、適宜変更可能である。 (Production method)
Next, an example of a method for manufacturing the light-transmitting member 10 of this embodiment will be described. Note that the manufacturing method described below is an example and can be modified as appropriate.
　まず、中空ポリカーボネート板１００を、リブ１０４（図１５参照）に沿った方向、つまり筒状の中空部１０６の軸方向（図１５参照）を鉛直方向として設置する。また、中空ポリカーボネート板１００の上方側の側端部１１０Ｚを除いて、中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚに保持部材２５０、２５１を接合し、中空部１０６及びエアロゲル層１３０の下方の開口端を塞ぐ。そして、中空ポリカーボネート板１００の中空部１０６の上方の開口から、中空部１０６にエアロゲルＭを充填する。 First, the hollow polycarbonate plate 100 is installed with the direction along the ribs 104 (see FIG. 15), that is, the axial direction of the cylindrical hollow part 106 (see FIG. 15) as the vertical direction. In addition, holding members 250 and 251 are joined to the side edges 110X and 110Z of the hollow polycarbonate plate 100, excluding the upper side edge 110Z of the hollow polycarbonate plate 100, and the lower opening of the hollow portion 106 and the airgel layer 130 is Seal the ends. Then, the airgel M is filled into the hollow part 106 from the opening above the hollow part 106 of the hollow polycarbonate plate 100.
　図１２Ａは、上記状態の中空ポリカーボネート板１００のＺ方向の中央部の水平断面である。図１３Ａは、上記状態の中空ポリカーボネート板１００のＸ方向の中央部の垂直断面である。 FIG. 12A is a horizontal cross section of the center part in the Z direction of the hollow polycarbonate plate 100 in the above state. FIG. 13A is a vertical cross section of the central portion in the X direction of the hollow polycarbonate plate 100 in the above state.
　更に、エアロゲルＮを二枚の中空ポリカーボネート板１００の間に充填し、中空ポリカーボネート板１００の上方の側端部１１０Ｚに保持部材２５０を接合して中空部１０６及びエアロゲル層１３０の上方の開口端を塞ぐ。図１２Ｂは、上記状態の中空ポリカーボネート板１００のＺ方向の中央部の水平断面である。図１３Ｂは、上記状態の中空ポリカーボネート板１００のＸ方向の中央部の垂直断面である。 Furthermore, airgel N is filled between the two hollow polycarbonate plates 100, and a holding member 250 is joined to the upper side end 110Z of the hollow polycarbonate plate 100 to close the hollow part 106 and the upper open end of the airgel layer 130. block FIG. 12B is a horizontal cross section of the center portion in the Z direction of the hollow polycarbonate plate 100 in the above state. FIG. 13B is a vertical cross section of the central portion in the X direction of the hollow polycarbonate plate 100 in the above state.
　なお、エアロゲル層１３０から中空ポリカーボネート板１００に作用する側圧によって、中空ポリカーボネート板１００は、側端部１１０Ｘが厚み方向内側に向けて傾斜すると共に、側端部１１０Ｘから中央部に向かって厚み方向外側にはらむ（膨らむ）。 Note that due to the lateral pressure acting on the hollow polycarbonate plate 100 from the airgel layer 130, the hollow polycarbonate plate 100 is tilted inward in the thickness direction from the side edge portions 110X, and outward in the thickness direction from the side edges 110X toward the center. Inflate (inflate).
（作用及び効果）
　次に、本実施形態の作用及び効果について説明する。 (action and effect)
Next, the functions and effects of this embodiment will be explained.
　透光部材１０では、一対の中空ポリカーボネート板１００の側端部１１０Ｘ、１１０Ｚが、保持部材２５１によって互いに厚み方向内側に傾斜された状態で保持されている。そのため、本実施形態は、側端部１１０Ｘが傾斜していない場合と比較し、一対の中空ポリカーボネート板１００の間にエアロゲルＮが充填されて形成されたエアロゲル層１３０から一対の中空ポリカーボネート板１００に作用する側圧によって、一対の中空ポリカーボネート板１００が外側へはらむことが抑制される。よって、一対の中空ポリカーボネート板１００の間に対するエアロゲルＮの過充填が防止又は抑制される。また、中空ポリカーボネート板１００がガラス板５２に近接又は接触することが抑制されるため、中空ポリカーボネート板１００とガラス板５２との間隔Ｌが確保される。 In the light-transmitting member 10, the side ends 110X and 110Z of the pair of hollow polycarbonate plates 100 are held by a holding member 251 in a state in which they are tilted inward in the thickness direction. Therefore, in this embodiment, compared to the case where the side end portions 110X are not inclined, the airgel layer 130 formed by filling airgel N between the pair of hollow polycarbonate plates 100 is The applied lateral pressure prevents the pair of hollow polycarbonate plates 100 from bulging outward. Therefore, overfilling of airgel N between the pair of hollow polycarbonate plates 100 is prevented or suppressed. Furthermore, since the hollow polycarbonate plate 100 is prevented from coming close to or in contact with the glass plate 52, the distance L between the hollow polycarbonate plate 100 and the glass plate 52 is secured.
　ここで、本実施形態では、保持部材２５０、２５１によって、中空ポリカーボネート板１００のはらみが規定値内に納まるように保持部材２５０、２５１等が設定されている。 Here, in this embodiment, the holding members 250, 251, etc. are set so that the holding members 250, 251 keep the tension of the hollow polycarbonate plate 100 within a specified value.
　中空ポリカーボネート板１００のはらみが規定値内に納まる設定とは、実施形態の中空ポリカーボネート板１００のはらみが、比較例の保持部材９５０によって一対の中空ポリカーボネート板１００を保持した場合の中空ポリカーボネート板１００のはらみよりも小さくなる設定が好ましい。 The setting in which the hem of the hollow polycarbonate board 100 falls within the specified value means that the hem of the hollow polycarbonate board 100 of the embodiment is the same as that of the hollow polycarbonate board 100 when a pair of hollow polycarbonate boards 100 are held by the holding member 950 of the comparative example. It is preferable to set the value to be smaller than the initial value.
　また、中空ポリカーボネート板１００のはらみが規定値内に納まる設定とは、間隔Ｌの設定値のずれが所定範囲、例えば、１０％以内に納まる設定がより好ましい。例えば、間隔Ｌの設定値が１０ｍｍである場合、中空ポリカーボネート板１００のはらみが規定値内に納まる設定とは、９ｍｍ～１１ｍｍの間に納まる設定となる。また、中空ポリカーボネート板１００のはらみが規定値内に納まる設定とは、一対の中空ポリカーボネート板１００の間にエアロゲルＮを隙間なく充填した場合のエアロゲルＮの設定量からのずれが、所定値内、例えば１０％以内に納まる設定が好ましい。 Further, the setting in which the hem of the hollow polycarbonate plate 100 falls within a specified value is more preferably the setting in which the deviation of the set value of the interval L falls within a predetermined range, for example, 10%. For example, when the set value of the interval L is 10 mm, the setting where the hem of the hollow polycarbonate plate 100 falls within the specified value is the setting where it falls between 9 mm and 11 mm. In addition, the setting in which the hem of the hollow polycarbonate plates 100 is within a specified value means that the deviation from the set amount of airgel N when filling airgel N between a pair of hollow polycarbonate plates 100 without any gap is within a specified value, For example, a setting within 10% is preferable.
　また、複層透光体１３では、一対の中空ポリカーボネート板１００の間にエアロゲル層１３０が形成された透光部材１１が、隣り合うガラス板５２の間の中空層５５に設けられている。これにより、複層透光体１２の断熱性が向上する。また、エアロゲル層１３０から一対の中空ポリカーボネート板１００に作用する側圧による一対の中空ポリカーボネート板１００のはらみが、保持部材２５０、２５１によって抑制され、規定値内に納められている。よって、ガラス板５２と中空ポリカーボネート板１００との接触が防止されるので、複層透光体１３の断熱効果が向上する。 Furthermore, in the multilayer light-transmitting body 13, the light-transmitting member 11 in which the airgel layer 130 is formed between a pair of hollow polycarbonate plates 100 is provided in the hollow layer 55 between the adjacent glass plates 52. This improves the heat insulation properties of the multilayer transparent body 12. Furthermore, the holding members 250 and 251 suppress the swelling of the pair of hollow polycarbonate plates 100 due to the lateral pressure acting on the pair of hollow polycarbonate plates 100 from the airgel layer 130, and the pressure is kept within a specified value. Therefore, since contact between the glass plate 52 and the hollow polycarbonate plate 100 is prevented, the heat insulating effect of the multilayer transparent body 13 is improved.
　また、一対の中空ポリカーボネート板１００の側端部１１０Ｘは、保持部材２５１によって互いに厚み方向内側に傾斜された状態で保持されている。そのため、例えば、エアロゲル層１３０の上端部分のように、エアロゲル層１３０から一対の中空ポリカーボネート板１００に作用する側圧が低い部分でも、一対の中空ポリカーボネート板１００からエアロゲル層１３０に圧縮力が付与されている。この圧縮力によって、エアロゲル層１３０の振動等が抑制されるため、振動等によるエアロゲルＮの沈降が防止又は抑制される。 Further, the side end portions 110X of the pair of hollow polycarbonate plates 100 are held by a holding member 251 in a state in which they are inclined mutually inward in the thickness direction. Therefore, for example, even in areas where the lateral pressure acting on the pair of hollow polycarbonate plates 100 from the airgel layer 130 is low, such as the upper end portion of the airgel layer 130, compressive force is applied to the airgel layer 130 from the pair of hollow polycarbonate plates 100. There is. This compressive force suppresses vibrations and the like of the airgel layer 130, so that sedimentation of the airgel N due to vibrations and the like is prevented or suppressed.
　また、中空ポリカーボネート板１００が仮に熱によって伸長しても、一対の中空ポリカーボネート板１００からエアロゲル層１３０に圧縮力が作用するので、エアロゲルＮの沈降を抑制する効果が得られる。 Furthermore, even if the hollow polycarbonate plates 100 are expanded due to heat, compressive force acts on the airgel layer 130 from the pair of hollow polycarbonate plates 100, so that the effect of suppressing sedimentation of the airgel N can be obtained.
　また、保持部材２５０は、中空ポリカーボネート板１００よりも剛性が大きい。そのため、エアロゲル層１３０から外側爪部２５１Ａに側圧が作用しても、外側爪部２５１Ａが倒れることがない。よって、保持部材２５０によって、中空ポリカーボネート板１００の側端部１１０Ｘを互いに厚み方向内側に傾斜させた状態で保持し続けることができる。 Additionally, the holding member 250 has greater rigidity than the hollow polycarbonate plate 100. Therefore, even if lateral pressure is applied from the airgel layer 130 to the outer claw portion 251A, the outer claw portion 251A does not fall down. Therefore, the holding member 250 can continue to hold the side ends 110X of the hollow polycarbonate plate 100 in a state in which they are mutually inclined inward in the thickness direction.
＜その他＞
　なお、本開示は、上記第一実施形態及び第二実施形態に限定されない。 <Others>
Note that the present disclosure is not limited to the first embodiment and second embodiment described above.
　例えば、上記第一実施形態及び第二実施形態では、スペーサー２１がガラス板５２の四辺の全てに設けられている。しかし、スペーサー２１は、適宜省略可能である。スペーサー２１が省略された場合は、例えば、保持部材１５１、２５１とシリコーン系シーリング材３１とが、直接接着されてもよい。 For example, in the first and second embodiments described above, the spacers 21 are provided on all four sides of the glass plate 52. However, the spacer 21 can be omitted as appropriate. When the spacer 21 is omitted, for example, the holding members 151, 251 and the silicone sealant 31 may be directly bonded.
　また、例えば、上記第一実施形態及び第二実施形態では、図１、図２及び図１０等のように、一対の中空ポリカーボネート板１００の間にエアロゲルＮが充填されて形成されたエアロゲル層１３０から一対の中空ポリカーボネート板１００に作用する側圧によって、一対の中空ポリカーボネート板１００が厚み方向外側にはらんでいる（膨らんでいる）。しかし、一対の中空ポリカーボネート板１００は、厚み方向外側にはらまなくてもよい。例えば、中空ポリカーボネート板１００の一辺の幅が５０ｃｍ程度と小さい場合等は、一対の中空ポリカーボネート板１００の間にエアロゲルＮが充填された後も、一対の中空ポリカーボネート板１００は、殆どはらまず、又は一対の中空ポリカーボネート板１００の間にエアロゲルＮを充填する前の湾曲状態を維持する場合がある。 For example, in the first and second embodiments, as shown in FIGS. 1, 2, and 10, the airgel layer 130 is formed by filling airgel N between a pair of hollow polycarbonate plates 100. Due to the lateral pressure acting on the pair of hollow polycarbonate plates 100, the pair of hollow polycarbonate plates 100 bulge outward in the thickness direction (bulge). However, the pair of hollow polycarbonate plates 100 do not have to fit outward in the thickness direction. For example, when the width of one side of the hollow polycarbonate plates 100 is as small as about 50 cm, even after the airgel N is filled between the pair of hollow polycarbonate plates 100, the pair of hollow polycarbonate plates 100 will hardly fill or The curved state before filling airgel N between the pair of hollow polycarbonate plates 100 may be maintained in some cases.
　また、例えば、上記第一実施形態では、保持部材１５０、１５１が中空ポリカーボネート板１００における側端部１１０Ｘと側端部１１０Ｚの両方を厚み方向内側に傾斜させた状態で保持している。しかし、保持部材１５０、１５１は、側端部１１０Ｘ及び側端部１１０Ｚの一方のみを厚み方向内側に傾斜させた状態で保持する構成でもよい。 Further, for example, in the first embodiment, the holding members 150 and 151 hold both the side end portions 110X and 110Z of the hollow polycarbonate plate 100 in a state in which they are inclined inward in the thickness direction. However, the holding members 150 and 151 may be configured to hold only one of the side end portion 110X and the side end portion 110Z in a state in which it is inclined inward in the thickness direction.
　また、例えば、上記第二実施形態では、保持部材２５０、２５１が中空ポリカーボネート板１００における側端部１１０を厚み方向内側に傾斜させた状態で保持している。しかし、保持部材２５０、２５１は、側端部１１０Ｘ及び側端部１１０Ｚの一方又は両方を厚み方向内側に傾斜させた状態で保持する構成でもよい。 Furthermore, for example, in the second embodiment, the holding members 250 and 251 hold the side end portion 110 of the hollow polycarbonate plate 100 in a state in which it is inclined inward in the thickness direction. However, the holding members 250 and 251 may be configured to hold one or both of the side end portions 110X and 110Z in a state in which they are inclined inward in the thickness direction.
　また、保持部材１５０、保持部材１５１、保持部材２５０及び保持部材２５１は、適宜組み合わせて使用可能である。例えば、保持部材１５１と保持部材２５１とを組み合わせてもよいし、保持部材１５１と保持部材２５０とを組み合わせてもよい。 Moreover, the holding member 150, the holding member 151, the holding member 250, and the holding member 251 can be used in appropriate combinations. For example, the holding member 151 and the holding member 251 may be combined, or the holding member 151 and the holding member 250 may be combined.
　また、保持部材は、中空ポリカーボネート板１００における側端部１１０Ｘ及び側端部１１０Ｚの少なくとも一方を厚み方向内側に傾斜させた状態で保持する構成でもよい。保持部材には、例えば、側端部１１０Ｘ及び側端部１１０Ｚがはめ込まれることによって、側端部１１０Ｘ及び側端部１１０Ｚを厚み方向内側に傾斜させた状態で保持する溝部が設けられても良い。 Furthermore, the holding member may be configured to hold at least one of the side end portions 110X and 110Z of the hollow polycarbonate plate 100 in a state in which it is inclined inward in the thickness direction. For example, the holding member may be provided with a groove portion into which the side end portions 110X and 110Z are fitted, thereby holding the side end portions 110X and 110Z in a state inclined inward in the thickness direction. .
　なお、中空ポリカーボネート板１００のはらみが十分に抑制されてない場合は、二枚の中空ポリカーボネート板１００の間隔を狭くしたり、エアロゲルＮの密度を小さくしたりする等の対応で、中空ポリカーボネート板１００のはらみを抑制する。仮に上記の対応を行う場合であっても、二枚の中空ポリカーボネート板１００に本開示の技術を適用することで、上記対応の程度を小さくすることができる。 Note that if the bulging of the hollow polycarbonate plate 100 is not sufficiently suppressed, the hollow polycarbonate plate 100 may be reduced by reducing the distance between the two hollow polycarbonate plates 100 or reducing the density of the airgel N. suppress the inclinations of Even if the above measures are taken, by applying the technology of the present disclosure to the two hollow polycarbonate plates 100, the degree of the above measures can be reduced.
　また、例えば、上記第一実施形態及び第二実施形態では、透光性樹脂板として中空ポリカーボネート板１００を用いた。しかし、透光性樹脂板は、中空ポリカーボネート板１００に限定されない。透光性樹脂板は、エアロゲルが充填可能な中空部を有してもよいし、中空部を有しなくてもよい。透光性樹脂板は、例えば、中実のポリカーボネート板又はアクリル板等でもよい。更に、透光性板材は、例えば、透光性樹脂板以外のガラス板等でもよい。 Furthermore, for example, in the first and second embodiments described above, the hollow polycarbonate plate 100 was used as the translucent resin plate. However, the transparent resin plate is not limited to the hollow polycarbonate plate 100. The translucent resin plate may have a hollow portion that can be filled with airgel, or may not have a hollow portion. The translucent resin plate may be, for example, a solid polycarbonate plate or an acrylic plate. Further, the light-transmitting plate material may be, for example, a glass plate other than a light-transmitting resin plate.
　なお、透光性板材がガラス板の場合、透光性板材（ガラス板）の厚み（図１では、中空ポリカーボネート板１００の厚みに対応）は、透光板（ガラス板５２）の厚み以下であることが望ましい（透光性板材（ガラス板）の厚み≦透光板（ガラス板５２）の厚み）。 In addition, when the light-transmitting plate material is a glass plate, the thickness of the light-transmitting plate material (glass plate) (corresponding to the thickness of the hollow polycarbonate plate 100 in FIG. 1) is less than or equal to the thickness of the light-transmitting plate (glass plate 52). It is desirable that there be (thickness of translucent plate material (glass plate)≦thickness of translucent plate (glass plate 52)).
　このように透光性板材（ガラス板）の厚みを透光板（ガラス板５２）の厚み以下とすることで、透光性板材（ガラス板）の軽量化を図ることができる。これにより、二枚の透光性板材（ガラス板）の間にエアロゲルＮを充填する際の作業性が向上するため、透光部材１０の製造効率が向上する。また、透光性板材（ガラス板）の厚みを透光板（ガラス板５２）の厚み以下とすることで、透光性板材（ガラス板）及び透光板（ガラス板５２）によって複層ガラスを構成した際に、複層ガラスの透明度を高めることができる。 By making the thickness of the light-transmitting plate (glass plate) equal to or less than the thickness of the light-transmitting plate (glass plate 52) in this way, it is possible to reduce the weight of the light-transmitting plate (glass plate). This improves the workability when filling airgel N between two translucent plates (glass plates), and thus improves the manufacturing efficiency of the translucent member 10. In addition, by making the thickness of the light-transmitting plate material (glass plate) less than the thickness of the light-transmitting plate (glass plate 52), the light-transmitting plate material (glass plate) and the light-transmitting plate (glass plate 52) can be used to create double-layered glass. The transparency of double-glazed glass can be improved when
　また、例えば、上記第一実施形態及び第二実施形態では、複層透光体１２、１３に二枚のガラス板５２が設けられている。しかし、複層透光体１２、１３に設けるガラス板５２の枚数は、二枚に限定されない、複層透光体１２、１３には、例えば、三枚以上のガラス板５２が設けられてもよい。なお、複層透光体１２、１３に三枚以上のガラス板を設ける場合、複層透光体１２、１３が複数の中空層を有することになる。この場合、複数の中空層の少なくとも一つに、本開示の技術が適用された透光部材を設けることができる。 Furthermore, for example, in the first embodiment and the second embodiment described above, two glass plates 52 are provided in the multilayer transparent bodies 12 and 13. However, the number of glass plates 52 provided in the multi-layer transparent bodies 12 and 13 is not limited to two. For example, three or more glass plates 52 may be provided in the multi-layer transparent bodies 12 and 13. good. In addition, when three or more glass plates are provided in the multilayer transparent bodies 12 and 13, the multilayer transparent bodies 12 and 13 will have a plurality of hollow layers. In this case, at least one of the plurality of hollow layers can be provided with a light-transmitting member to which the technology of the present disclosure is applied.
　また、例えば、上記第一実施形態及び第二実施形態では、透光板としてガラス板５２を用いた。しかし、透光板は、ガラス板５２に限定されない。透光板は、例えば、アクリル板又はポリカーボネート板等の樹脂製でもよい。なお、樹脂製の透光板は、ガラスに比べ耐火性又は耐久性が低下するが、ガラスよりも軽量である。 Furthermore, for example, in the first embodiment and the second embodiment described above, the glass plate 52 is used as the light-transmitting plate. However, the transparent plate is not limited to the glass plate 52. The transparent plate may be made of resin such as an acrylic plate or a polycarbonate plate, for example. Note that a transparent plate made of resin has lower fire resistance or durability than glass, but is lighter than glass.
　また、透光部材、透光板及び透光性板材は、光が透過すればよく、透明でもよいし、半透明でもよい。 Further, the light-transmitting member, the light-transmitting plate, and the light-transmitting plate material may be transparent or semi-transparent as long as light passes through them.
　更に、上記第一実施形態及び第二実施形態は、本開示の要旨を逸脱しない範囲において種々なる態様で実施し得る。また、上記第一実施形態、第二実施形態、及び変形例等は、適宜、組み合わせて実施可能である。 Further, the first embodiment and the second embodiment described above can be implemented in various ways without departing from the gist of the present disclosure. Moreover, the first embodiment, the second embodiment, the modified examples, etc. described above can be implemented in combination as appropriate.
　なお、２０２２年４月１２日に出願された日本国特許出願特願２０２２－０６５８１５号の開示は、その全体が参照により本明細書に取り込まれる。
　本明細書に記載された全ての文献、特許出願、及び技術規格は、個々の文献、特許出願、及び技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。 The disclosure of Japanese Patent Application No. 2022-065815 filed on April 12, 2022 is incorporated herein by reference in its entirety.
All documents, patent applications, and technical standards mentioned herein are incorporated by reference to the same extent as if each individual document, patent application, and technical standard was specifically and individually indicated to be incorporated by reference. Incorporated herein by reference.
　なお、上記第一実施形態及び第二実施形態に関し、以下の付記を開示する。 Note that the following additional notes are disclosed regarding the first embodiment and second embodiment.
＜付記１＞
　互いに対向して配置された一対の透光性板材と、
　一対の前記透光性板材の間に充填されたエアロゲルによって形成されたエアロゲル層と、
　一対の前記透光性板材の間の外縁部を封止すると共に一対の前記透光性板材の幅方向の側端部を互いに厚み方向内側に傾斜させた状態で保持し、前記エアロゲル層から一対の前記透光性板材に作用する側圧による一対の前記透光性板材のはらみを抑制する保持部材と、
　を備えた透光部材。
＜付記２＞
　前記保持部材は、
　前記透光性板材の前記側端部の端面に沿った枠部と、
　前記枠部の外端部から前記透光性板材の厚み方向内側に向かって傾斜した状態で突出し、前記側端部の外面に沿って配置される外側爪部と、
　を有し、
　前記保持部材は前記透光性板材よりも剛性が大きい、
　付記１に記載の透光部材。
＜付記３＞
　前記外側爪部は、前記透光性板材よりも剛性が大きい、
　付記２に記載の透光部材。
＜付記４＞
　前記外側爪部は、前記枠部の両側の前記外端部から突出し、一対の前記透光性板材の前記側端部の前記外面に沿ってそれぞれ配置される、
　付記２に記載の透光部材。
＜付記５＞
　前記保持部材は、前記枠部における前記外端部の内側から前記透光性板材の厚み方向内側に向かって傾斜した状態で突出し、前記側端部の内面に沿って配置される内側爪部を有している、
　付記２～付記４の何れか１つに記載の透光部材。
＜付記６＞
　前記外側爪部及び前記内側爪部は、前記透光性板材よりも剛性が大きい、
　付記５に記載の透光部材。
＜付記７＞
　前記外側爪部の突出方向の長さは、前記内側爪部の突出方向の長さ以上である、
　付記５に記載の透光部材。
＜付記８＞
　前記外側爪部の突出方向の長さは、前記内側爪部の突出方向の長さと同じである、
　付記５に記載の透光部材。
＜付記９＞
　前記内側爪部は、前記枠部における両側の前記外端部の内側から突出し、一対の前記透光性板材の前記側端部の前記内面に沿ってそれぞれ配置される、
　付記５～付記８の何れか１つに記載の透光部材。
＜付記１０＞
　一対の前記透光性板材は、前記側端部から幅方向の中央部に向かって厚み方向外側にはらむ、
　付記１～付記９の何れか１つに記載の透光部材。
＜付記１１＞
　前記保持部材は、一対の前記透光性板材の幅方向両側の前記側端部をそれぞれ保持する、
　付記１～付記１０の何れか１つに記載の透光部材。
＜付記１２＞
　前記透光性板材は、エアロゲルが充填される複数の中空部を有している、
　付記１～付記１１の何れか１つに記載の透光部材。
＜付記１３＞
　前記透光性板材は、
　互いに対向する一対のポリカーボネート板と、
　一対の前記ポリカーボネート板の間に設けられ、一対の前記ポリカーボネート板を連結すると共に、一対の前記ポリカーボネート板の間に複数の中空部を形成する複数のリブと、
　を有し、
　前記中空部には、エアロゲルが充填されている、
　付記１～付記１１の何れか１つに記載の透光部材。
＜付記１４＞
　互いに対向すると共に、縁部間が閉塞された複数枚の透光板と、
　隣り合う前記透光板の間の中空層に、前記透光板と間隔をあけて設けられた付記１～付記１３の何れか１つに記載の透光部材と、
　を備えた複層透光体。
＜付記１５＞
　前記透光性板材及び前記透光板は、ガラス板とされ、
　前記透光性板材の厚みは、前記透光板の厚み以下である、
　付記１４に記載の複層透光体。 <Additional note 1>
a pair of translucent plates arranged facing each other;
an airgel layer formed by airgel filled between the pair of translucent plate materials;
The outer edges between the pair of light-transmitting plate materials are sealed, and the side edges of the pair of light-transmitting plate materials in the width direction are held in a state inclining inwardly in the thickness direction, and the pair of light-transmitting plate materials are separated from the airgel layer. a holding member that suppresses the pair of light-transmitting plates from becoming loose due to lateral pressure acting on the light-transmitting plates;
Translucent member with.
<Additional note 2>
The holding member is
a frame portion along the end surface of the side end portion of the translucent plate material;
an outer claw protruding from the outer end of the frame part in an inclined direction inward in the thickness direction of the translucent plate material and disposed along the outer surface of the side end part;
has
The holding member has greater rigidity than the transparent plate material.
The light-transmitting member described in Supplementary Note 1.
<Additional note 3>
The outer claw portion has greater rigidity than the translucent plate material.
The light-transmitting member according to appendix 2.
<Additional note 4>
The outer claw portions protrude from the outer end portions on both sides of the frame portion and are respectively arranged along the outer surfaces of the side end portions of the pair of light-transmitting plate materials.
The light-transmitting member according to appendix 2.
<Additional note 5>
The holding member projects from the inside of the outer end of the frame portion inward in the thickness direction of the translucent plate material, and has an inner claw portion disposed along the inner surface of the side end portion. have,
The light-transmitting member according to any one of Supplementary notes 2 to 4.
<Additional note 6>
The outer claw portion and the inner claw portion have greater rigidity than the transparent plate material.
The light-transmitting member according to appendix 5.
<Additional note 7>
The length of the outer claw portion in the protruding direction is greater than or equal to the length of the inner claw portion in the protruding direction;
The light-transmitting member according to appendix 5.
<Additional note 8>
The length of the outer claw portion in the protruding direction is the same as the length of the inner claw portion in the protruding direction;
The light-transmitting member according to appendix 5.
<Additional note 9>
The inner claw portions protrude from inside the outer end portions on both sides of the frame portion, and are respectively arranged along the inner surfaces of the side end portions of the pair of translucent plate materials.
The light-transmitting member according to any one of Supplementary notes 5 to 8.
<Additional note 10>
The pair of translucent plates are arranged outwardly in the thickness direction from the side end portions toward the center portion in the width direction.
The light-transmitting member according to any one of Supplementary notes 1 to 9.
<Additional note 11>
The holding member holds the side end portions of the pair of translucent plate materials on both sides in the width direction, respectively.
The light-transmitting member according to any one of Supplementary notes 1 to 10.
<Additional note 12>
The translucent plate material has a plurality of hollow parts filled with airgel,
The light-transmitting member according to any one of Supplementary notes 1 to 11.
<Additional note 13>
The translucent plate material is
A pair of polycarbonate plates facing each other,
a plurality of ribs provided between the pair of polycarbonate plates, connecting the pair of polycarbonate plates and forming a plurality of hollow parts between the pair of polycarbonate plates;
has
The hollow part is filled with airgel.
The light-transmitting member according to any one of Supplementary notes 1 to 11.
<Additional note 14>
a plurality of transparent plates facing each other and having closed edges;
The light-transmitting member according to any one of Supplementary Notes 1 to 13, which is provided in a hollow layer between adjacent light-transmitting plates with an interval from the light-transmitting plates;
Multi-layer translucent material with
<Additional note 15>
The light-transmitting plate material and the light-transmitting plate are glass plates,
The thickness of the light-transmitting plate material is equal to or less than the thickness of the light-transmitting plate,
The multilayer transparent body according to appendix 14.
　更に、上記第一実施形態及び第二実施形態に関し、以下の付記を開示する。 Furthermore, the following additional notes are disclosed regarding the first embodiment and second embodiment.
＜付記１＞
　対向して配置された一対の透光性板材と、
　一対の前記透光性板材の間にエアロゲルが充填されて形成されたエアロゲル層と、
　一対の前記透光性板材の間の外縁部を封止すると共に幅方向両側の側端部を互いに厚み方向内側に傾斜させて保持し、前記エアロゲル層の側圧による前記透光性板材のはらみを抑制する保持部材と、
　を備えた透光部材。
＜付記２＞
　前記保持部材は、
　前記透光性板材の前記側端部の端面に沿った枠部と、
　前記枠部の外端部から厚み方向内側に向かって傾斜して突出し、前記側端部の外面に沿った外側爪部と、
　を有し、
　前記保持部材は前記透光性板材よりも剛性が大きい、
　付記１に記載の透光部材。
＜付記３＞
　前記保持部材は、前記枠部における前記外端部の内側から厚み方向内側に向かって傾斜して突出し、前記側端部の内面に沿った内側爪部を有している、
　付記２に記載の透光部材。
＜付記４＞
　付記１～付記３のいずれか１つに記載の透光部材が、縁部間が閉塞された複数枚の透光板の間の中空層に前記透光板と間隔をあけて設けられている、
　複層透光体。 <Additional note 1>
A pair of translucent plates arranged facing each other,
an airgel layer formed by filling airgel between a pair of the light-transmitting plate materials;
The outer edges between the pair of translucent plates are sealed, and the side edges on both sides in the width direction are held so as to be tilted inward in the thickness direction to prevent the bulging of the translucent plates due to the lateral pressure of the airgel layer. a holding member that suppresses the
Translucent member with.
<Additional note 2>
The holding member is
a frame portion along the end surface of the side end portion of the translucent plate material;
an outer claw portion that inclines and projects inward in the thickness direction from an outer end portion of the frame portion and extends along an outer surface of the side end portion;
has
The holding member has greater rigidity than the transparent plate material.
The light-transmitting member described in Supplementary Note 1.
<Additional note 3>
The holding member projects obliquely from inside the outer end of the frame toward the inner side in the thickness direction, and has an inner claw portion along the inner surface of the side end.
The light-transmitting member according to appendix 2.
<Additional note 4>
The light-transmitting member according to any one of Supplementary Notes 1 to 3 is provided in a hollow layer between a plurality of light-transmitting plates whose edges are closed and spaced apart from the light-transmitting plates;
Multi-layer translucent material.

Claims (15)

  1. 　互いに対向して配置された一対の透光性板材と、
    　一対の前記透光性板材の間に充填されたエアロゲルによって形成されたエアロゲル層と、
    　一対の前記透光性板材の間の外縁部を封止すると共に一対の前記透光性板材の幅方向の側端部を互いに厚み方向内側に傾斜させた状態で保持し、前記エアロゲル層から一対の前記透光性板材に作用する側圧による一対の前記透光性板材のはらみを抑制する保持部材と、
    　を備えた透光部材。     a pair of translucent plates arranged facing each other;
    an airgel layer formed by airgel filled between the pair of translucent plate materials;
    The outer edges between the pair of light-transmitting plate materials are sealed, and the side edges of the pair of light-transmitting plate materials in the width direction are held in a state inclining inwardly in the thickness direction, and the pair of light-transmitting plate materials are separated from the airgel layer. a holding member that suppresses the pair of light-transmitting plates from becoming loose due to lateral pressure acting on the light-transmitting plates;
    Translucent member with.
  2. 　前記保持部材は、
    　前記透光性板材の前記側端部の端面に沿った枠部と、
    　前記枠部の外端部から前記透光性板材の厚み方向内側に向かって傾斜した状態で突出し、前記側端部の外面に沿って配置される外側爪部と、
    　を有し、
    　前記保持部材は前記透光性板材よりも剛性が大きい、
    　請求項１に記載の透光部材。     The holding member is
    a frame portion along the end surface of the side end portion of the translucent plate material;
    an outer claw protruding from the outer end of the frame part in an inclined direction inward in the thickness direction of the translucent plate material and disposed along the outer surface of the side end part;
    has
    The holding member has greater rigidity than the transparent plate material.
    The transparent member according to claim 1.
  3. 　前記外側爪部は、前記透光性板材よりも剛性が大きい、
    　請求項２に記載の透光部材。     The outer claw portion has greater rigidity than the translucent plate material.
    The transparent member according to claim 2.
  4. 　前記外側爪部は、前記枠部の両側の前記外端部から突出し、一対の前記透光性板材の前記側端部の前記外面に沿ってそれぞれ配置される、
    　請求項２に記載の透光部材。     The outer claw portions protrude from the outer end portions on both sides of the frame portion and are respectively arranged along the outer surfaces of the side end portions of the pair of light-transmitting plate materials.
    The transparent member according to claim 2.
  5. 　前記保持部材は、前記枠部における前記外端部の内側から前記透光性板材の厚み方向内側に向かって傾斜した状態で突出し、前記側端部の内面に沿って配置される内側爪部を有している、
    　請求項２に記載の透光部材。     The holding member projects from the inside of the outer end of the frame portion inward in the thickness direction of the translucent plate material, and has an inner claw portion disposed along the inner surface of the side end portion. have,
    The transparent member according to claim 2.
  6. 　前記外側爪部及び前記内側爪部は、前記透光性板材よりも剛性が大きい、
    　請求項５に記載の透光部材。     The outer claw portion and the inner claw portion have greater rigidity than the transparent plate material.
    The transparent member according to claim 5.
  7. 　前記外側爪部の突出方向の長さは、前記内側爪部の突出方向の長さ以上である、
    　請求項５に記載の透光部材。     The length of the outer claw portion in the protruding direction is greater than or equal to the length of the inner claw portion in the protruding direction;
    The transparent member according to claim 5.
  8. 　前記外側爪部の突出方向の長さは、前記内側爪部の突出方向の長さと同じである、
    　請求項５に記載の透光部材。     The length of the outer claw portion in the protruding direction is the same as the length of the inner claw portion in the protruding direction;
    The transparent member according to claim 5.
  9. 　前記内側爪部は、前記枠部における両側の前記外端部の内側から突出し、一対の前記透光性板材の前記側端部の前記内面に沿ってそれぞれ配置される、
    　請求項５に記載の透光部材。     The inner claw portions protrude from inside the outer end portions on both sides of the frame portion, and are respectively arranged along the inner surfaces of the side end portions of the pair of translucent plate materials.
    The transparent member according to claim 5.
  10. 　一対の前記透光性板材は、前記側端部から幅方向の中央部に向かって厚み方向外側にはらむ、
    　請求項１に記載の透光部材。     The pair of translucent plates are arranged outwardly in the thickness direction from the side end portions toward the center portion in the width direction.
    The transparent member according to claim 1.
  11. 　前記保持部材は、一対の前記透光性板材の幅方向両側の前記側端部をそれぞれ保持する、
    　請求項１に記載の透光部材。     The holding member holds the side end portions of the pair of translucent plate materials on both sides in the width direction, respectively.
    The transparent member according to claim 1.
  12. 　前記透光性板材は、エアロゲルが充填される複数の中空部を有している、
    　請求項１に記載の透光部材。     The translucent plate material has a plurality of hollow parts filled with airgel,
    The transparent member according to claim 1.
  13. 　前記透光性板材は、
    　互いに対向する一対のポリカーボネート板と、
    　一対の前記ポリカーボネート板の間に設けられ、一対の前記ポリカーボネート板を連結すると共に、一対の前記ポリカーボネート板の間に複数の中空部を形成する複数のリブと、
    　を有し、
    　前記中空部には、エアロゲルが充填されている、
    　請求項１に記載の透光部材。     The translucent plate material is
    A pair of polycarbonate plates facing each other,
    a plurality of ribs provided between the pair of polycarbonate plates, connecting the pair of polycarbonate plates and forming a plurality of hollow parts between the pair of polycarbonate plates;
    has
    The hollow part is filled with airgel.
    The transparent member according to claim 1.
  14. 　互いに対向すると共に、縁部間が閉塞された複数枚の透光板と、
    　隣り合う前記透光板の間の中空層に、前記透光板と間隔をあけて設けられた請求項１～請求項１３の何れか１項に記載の透光部材と、
    　を備えた複層透光体。     a plurality of transparent plates facing each other and having closed edges;
    The light-transmitting member according to any one of claims 1 to 13, which is provided in a hollow layer between adjacent light-transmitting plates with an interval from the light-transmitting plates;
    Multi-layer translucent material with
  15. 　前記透光性板材及び前記透光板は、ガラス板とされ、
    　前記透光性板材の厚みは、前記透光板の厚み以下である、
    　請求項１４に記載の複層透光体。     The light-transmitting plate material and the light-transmitting plate are glass plates,
    The thickness of the light-transmitting plate material is equal to or less than the thickness of the light-transmitting plate,
    The multilayer transparent body according to claim 14.
PCT/JP2022/029397 2022-04-12 2022-07-29 Translucent member and multilayer translucent body WO2023199533A1 (en)

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JP2022065815 2022-04-12
JP2022-065815 2022-04-12

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070122588A1 (en) * 2005-11-25 2007-05-31 Advanced Glazing Technologies Limited (Agtl) Glazing unit with transparent filler
JP2009203793A (en) * 2008-01-30 2009-09-10 Asahi Glass Co Ltd Double glazing unit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070122588A1 (en) * 2005-11-25 2007-05-31 Advanced Glazing Technologies Limited (Agtl) Glazing unit with transparent filler
JP2009203793A (en) * 2008-01-30 2009-09-10 Asahi Glass Co Ltd Double glazing unit

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