WO2019012962A1 - Verre à vitre pour véhicule automobile - Google Patents

Verre à vitre pour véhicule automobile Download PDF

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Publication number
WO2019012962A1
WO2019012962A1 PCT/JP2018/023873 JP2018023873W WO2019012962A1 WO 2019012962 A1 WO2019012962 A1 WO 2019012962A1 JP 2018023873 W JP2018023873 W JP 2018023873W WO 2019012962 A1 WO2019012962 A1 WO 2019012962A1
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WO
WIPO (PCT)
Prior art keywords
low radiation
layer
glass
radiation layer
window glass
Prior art date
Application number
PCT/JP2018/023873
Other languages
English (en)
Japanese (ja)
Inventor
時彦 青木
拓樹 平尾
Original Assignee
Ａｇｃ株式会社
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 Ａｇｃ株式会社 filed Critical Ａｇｃ株式会社
Priority to CN201880045768.7A priority Critical patent/CN110869228B/zh
Priority to JP2019529030A priority patent/JP7040526B2/ja
Publication of WO2019012962A1 publication Critical patent/WO2019012962A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/06—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/06—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals
    • C03C17/09—Surface treatment of glass, not in the form of fibres or filaments, by coating with metals by deposition from the vapour phase
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material

Definitions

  • the present invention relates to a window glass for automobiles.
  • Patent Document 1 an on-vehicle system having an information device such as a camera is mounted in a car to transmit and receive information signals such as road conditions via a window glass (for example, a windshield of a vehicle) (Patent Document 1) reference).
  • Patent Document 1 An on-vehicle system having an information device such as a camera is mounted in a car to transmit and receive information signals such as road conditions via a window glass (for example, a windshield of a vehicle)
  • Patent Document 1 Patent Document 1
  • These in-vehicle systems are becoming more advanced each year, and by analyzing the photographed image of the subject acquired by the camera, it recognizes oncoming vehicles, vehicles in front, pedestrians, traffic signs, lane boundaries, etc. Support for various driving such as
  • the camera of this on-vehicle system is often installed at a position having a shielding layer, such as near the upper center of the windshield.
  • the shielding layer corresponding to the imaging range of the camera is provided with an optical opening as a transmission area for transmitting and receiving the information signal. That is, in many cases, a shielding layer is provided around the transmission region for transmitting and receiving the information signal (see Patent Document 2).
  • the load on the information processing apparatus due to the amount of information to be processed becoming high speed and huge becomes a problem.
  • the problem of heat generation due to an increase in the load on the information processing apparatus can not be avoided. Therefore, in addition to the heat generated by the process, if the heat entering from the outside of the window glass of the car is further received, the camera and the information processing apparatus may overheat, causing a malfunction or failure to operate. .
  • An object of the present invention is to provide a window glass for an automobile capable of reducing a load due to heat to an on-vehicle system including an information transmitting / receiving device such as a camera and an information processing device.
  • the window glass for an automobile is a window glass for an automobile capable of mounting an in-vehicle system for transmitting and receiving signals of radio waves and / or light to the outside of a vehicle.
  • a shielding layer provided along the outer periphery of the plate-like glass member on the inner surface of the vehicle, and the shielding layer has a projecting portion projecting in the in-plane direction from the center of the upper side of the plate-like glass member
  • the projection has an opening including a signal transmission area through which the signal is transmitted as the signal is transmitted and received, and a low radiation layer is formed on the inner surface of the plate-like glass member on the inner surface of the opening. And at least a part of the signal transmission area.
  • the window glass for motor vehicles which can reduce the load by the heat with respect to the vehicle-mounted system provided with an information transmission / reception apparatus including a camera, an information processing apparatus, etc. can be provided.
  • FIG. 2 is a cross-sectional view of the windshield shown in FIG. 1 taken along line XX. It is an enlarged plan view of the upper side center vicinity of another embodiment of the windshield concerning the present invention. It is a top view explaining the example of composition of the low radiation layer of the windshield concerning an embodiment of the present invention. It is a top view explaining another example of composition of a low radiation layer of a windshield concerning an embodiment of the present invention. It is a top view explaining another example of composition of a low radiation layer of a windshield concerning an embodiment of the present invention. It is a sectional view explaining an example of composition of a low radiation layer of a windshield concerning an embodiment of the present invention.
  • composition of a low radiation layer of a windshield concerning an embodiment of the present invention. It is a sectional view explaining another example of composition of a low radiation layer of a windshield concerning an embodiment of the present invention. It is a sectional view explaining another example of composition of a low radiation layer of a windshield concerning an embodiment of the present invention. It is a sectional view explaining another example of composition of a low radiation layer of a windshield concerning an embodiment of the present invention. It is a sectional view explaining another example of composition of a low radiation layer of a windshield concerning an embodiment of the present invention.
  • FIG. 1 is a plan view of an embodiment of a windshield according to the present invention.
  • FIG. 2 is a cross-sectional view of the windshield shown in FIG. 1 taken along line XX.
  • the window glass for an automobile according to the present invention is a window glass for an automobile in which an in-vehicle system for transmitting and receiving radio waves and / or light signals outside the vehicle can be mounted in the vehicle, and applied to front glass, rear glass, side glass, roof glass, etc. Possible, application to the windshield is preferred.
  • the expressions “upper” and “lower” indicate upper and lower sides, respectively, when the window glass for an automobile is mounted on a vehicle.
  • the “upper part” of the automotive window glass is the upper part when the automotive window glass is mounted on the vehicle, and the “lower part” is the automotive window glass mounted on the vehicle The lower part of the case.
  • the "periphery part" of a plate-like glass member means the area
  • the outer peripheral side of the main surface of the plate-like glass member is referred to as the outer side
  • the central side is referred to as the inner side as viewed from the outer periphery.
  • the "end face” of the low radiation layer and the shielding layer means a face connecting one main surface to the other main face, and the "end” means from the end face to the central part of the main surface It refers to the part having a certain width toward the head.
  • the windshield 1 shown in FIG. 1 and FIG. 2 is provided on the plate-like glass member 2 and the inner surface Sa of the plate-like glass member 2 along the outer periphery of the plate-like glass member 2 and visible light And a shielding layer 5 for shielding the
  • the shielding layer 5 has a projection 7 formed to project in the in-plane direction (downward) from the center of the upper side of the plate-like glass member 2.
  • the projecting portion 7 has an opening 4 provided in the central portion with a signal transmission area 3 through which the signal is transmitted in accordance with transmission and reception of the signal of the on-vehicle system.
  • FIG. 1 is a plan view of the windshield 1 as viewed from the inside of the vehicle.
  • the attachment part A of the in-vehicle system is shown by a dotted line in FIG.
  • the attachment portion A is located around the opening 4 of the shielding layer 5.
  • the outline configuration of the in-vehicle system 40 when the in-vehicle system is attached to the windshield 1 is shown by dotted lines in FIG.
  • the in-vehicle system 40 includes an information transmission / reception device 41, an information processing device 42, and a housing 43 that accommodates these.
  • the housing 43 may be attached to the attachment portion A via the adhesive layer 44.
  • the housing 43 may be attached to a bracket (not shown), in which case the bracket may be attached to the attachment portion A via the adhesive layer 44.
  • the shielding layer 5 is provided in a region including at least the mounting portion A of the in-vehicle system of the vehicle inner surface Sa of the plate-like glass member 2.
  • the mount A of the in-vehicle system is usually located at the top of the windshield.
  • the shielding layer 5 includes the mounting portion A and is provided in an area that does not obstruct the driver's view.
  • the shielding layer 5 is provided on the periphery of the sheet glass member 2 on the inner surface Sa of the vehicle. And the shielding layer 5 which has the opening part 4 and which includes the attaching part A is continuously provided with the shielding layer 5 of a peripheral part as the protrusion part 7.
  • FIG. The shielding layer 5 having the peripheral portion 5 and the opening 4 and including the attachment portion A may be separated from each other.
  • the shielding layer 5 may be provided in the form of a band, for example, in the entire peripheral portion for the purpose of concealing the vehicle mounting portion of the windshield 1, but the shielding layer 5 does not necessarily have to be all four sides of the peripheral portion.
  • the shielding layer 5 may be formed on part of the portion.
  • the shielding layer 5 may be made of a conventionally known material such as a black ceramic layer.
  • the thickness of the shielding layer 5 is not particularly limited as long as there is no problem in the visibility.
  • the thickness of the shielding layer 5 is preferably about 8 to 20 ⁇ m, and more preferably 10 to 15 ⁇ m.
  • the plate-like glass member 2 which the windshield 1 has is a laminated glass.
  • the laminated glass which is the plate-like glass member 2 is configured such that the in-vehicle glass plate 2A and the out-of-vehicle glass plate 2B are bonded via the intermediate adhesive layer 2C.
  • symbol of 2 is attached
  • the interior glass plate 2A and the exterior glass plate 2B are also referred to as a glass plate 2A and a glass plate 2B, respectively.
  • the shielding layer 5 is provided on the main surface of the in-vehicle glass plate 2A opposite to the intermediate adhesive layer 2C, that is, on the inner surface Sa of the laminated glass 2.
  • the shielding layer 5 may be provided on the main surface of the outer glass plate 2B on the side of the intermediate adhesive layer 2C, as necessary.
  • the shielding layer 5 may be provided on both the main surface of the in-vehicle glass plate 2A opposite to the intermediate adhesive layer 2C and the main surface on the intermediate adhesive layer 2C side of the external glass plate 2B.
  • the glass plates 2A and 2B in the laminated glass 2 conventionally known glass plates used for window glass of automobiles can be used.
  • the glass plates 2A and 2B are preferably, for example, glass plates manufactured by a known float method. In the float method, a molten glass substrate is floated on a molten metal such as tin, and a glass plate of uniform thickness and width is formed by precise temperature control.
  • the thickness of the glass plates 2A and 2B is not particularly limited, but is preferably 0.5 mm or more and 3.0 mm or less.
  • the thickness of the glass plates 2A and 2B may be the same or different.
  • the thickness of the in-vehicle glass plate 2A is preferably 0.3 mm or more and 2.3 mm or less.
  • the thickness of the in-vehicle glass plate 2A is 0.3 mm or more, the handling property is good, and when it is 2.3 mm or less, the mass of the windshield 1 does not become too large.
  • glass quality (for example, residual stress) can be maintained by making board thickness of glass plate 2A in a car into 0.3 mm or more and 2.3 mm or less.
  • Setting the thickness of the in-vehicle glass plate 2A to 0.3 mm or more and 2.3 mm or less is particularly effective for maintaining the glass quality (e.g., residual stress) in a deeply curved glass plate.
  • 0.5 mm or more and 2.1 mm or less are more preferable, and, as for the plate
  • board thickness of the glass plate 2B outside a vehicle is 1.8 mm or more and 3 mm or less.
  • the thickness of the outside glass plate 2B is 1.8 mm or more, the strength such as anti-flying performance is sufficient, and when it is 3 mm or less, the mass of the windshield 1 does not become too large, and the vehicle fuel efficiency is improved.
  • the plate thickness of the glass plate 2B outside a vehicle 1.8 mm or more and 2.8 mm or less are more preferable, and 1.8 mm or more and 2.6 mm or less are more preferable.
  • the thickness of the glass plates 2A and 2B is not always constant, and may be changed depending on the place as needed.
  • one or both of the glass plates 2A and 2B may be provided with a region in the form of a ridge in cross section in which the thickness on the upper end side in the vertical direction when the windshield 1 is attached to the vehicle is thicker than the lower end side.
  • Glass plate 2A as an example of the composition of glass constituting the 2B is a composition that is displayed in mole percent on the oxide basis, of SiO 2 50 ⁇ 80%, the B 2 O 3 0 ⁇ 10% , Al 2 O 3 0.1 to 25%, Li 2 O + Na 2 O + K 2 O 3 to 30%, MgO 0 to 25%, CaO 0 to 25%, SrO 0 to 5%, BaO 0 to 5%, ZrO
  • the glass include 0 to 5% of 2 and 0 to 5% of SnO 2 , but are not particularly limited.
  • the composition of the intermediate adhesive layer 2C may be one generally used for conventional laminated glass, and for example, polyvinyl butyral (PVB), ethylene vinyl acetal (EVA) or the like can be used.
  • PVB polyvinyl butyral
  • EVA ethylene vinyl acetal
  • a thermosetting resin that is liquid before heating may be used as a constituent material of the intermediate adhesive layer 2C.
  • the information transmitting and receiving device 41 illustrated in FIG. 2 is, for example, a camera or a sensor.
  • the opening 4 in the protrusion 7 is a signal transmission area 3 through which a signal is transmitted when the information transmitting / receiving device 41 transmits / receives a signal of radio waves (300 MHz-10 GHz) and / or light (380 nm-1100 nm).
  • a signal of radio waves 300 MHz-10 GHz
  • 380 nm-1100 nm 380 nm-1100 nm.
  • Provided to secure the Radio waves include millimeter waves (30 to 300 GHz).
  • the signal transmission area 3 is also applicable to applications in which the information transmitting and receiving device 41 transmits and receives millimeter wave signals.
  • the shape and area of the signal transmission area 3 are determined by the information transmission / reception device 41.
  • the signal transmission region 3 has a configuration in which the shielding layer 5 is not provided on the plate-like glass member 2, and the transmission characteristics of radio waves, light and the like are the transmission characteristics of the plate-like glass member 2 such as radio waves and light Is the same as
  • the solar light transmittance (Te) of the plate-like glass member 2 is 60% or less and the visible light transmittance (Tv) is 70% or more.
  • the solar radiation transmittance (Te) is more preferably 55% or less, and particularly preferably 48% or less.
  • the solar reflectance (Re) is more preferably 5% or more, and particularly preferably 7% or more.
  • the visible light transmittance (Tv) is more preferably 72% or more, and particularly preferably 73% or more.
  • the haze value of the signal transmission region 3 is preferably 1.0% or less, more preferably 0.8% or less, and particularly preferably 0.6% or less.
  • the solar radiation transmittance (Te), the solar radiation reflectance (Re), and the visible light transmittance (Tv) are measured with a spectrophotometer or the like for the transmittance and reflectance in a wavelength range including at least 300 to 2100 nm, These are values calculated from the formulas defined in JIS R3106 (1998) and JIS R3212 (1998), respectively.
  • the solar radiation transmittance, the solar radiation reflectance and the visible light transmittance are the solar radiation transmittance (Te), the solar radiation reflectance (Re) and the visible light measured and calculated by the above-mentioned method. Permeability (Tv).
  • visible light transmittance (Tv), solar radiation transmittance (Te), solar radiation reflectance (Re), and haze value are not particularly limited, and can be the same as the plate-like glass member 2 as described above.
  • the infrared transmittance specifically, the average transmittance at 600 to 1100 nm measured by a spectrophotometer or the like is preferably 30% or more, and more preferably 40% or more. .
  • the infrared transmittance is a characteristic required for the signal transmission area 3. Therefore, only the signal transmission region 3 of the plate-like glass member 2 may be changed to a characteristic different from the region other than the signal transmission region 3 in accordance with the characteristics required for the signal transmission region 3.
  • the constituent material of the intermediate adhesive layer 2C can be changed from the above-described materials as appropriate.
  • the intermediate adhesive layer 2C at a portion corresponding to the signal transmission region 3 may be hollowed out to be an intermediate adhesive layer different from the region other than the signal transmission region 3.
  • the signal transmission area 3 of the plate-like glass member 2 may be coated with a water repellent function, a hydrophilic function, an antifogging function, a heat shielding function, an electrothermal function, and the like.
  • the opening 4 is provided so as to include the entire area of the signal transmission area 3 in the area of the opening 4.
  • the opening 4 is an area larger than the signal transmission area 3.
  • the size of the opening 4 is such that the low radiation layer 6 described below can be disposed between the outer circumference of the opening 4 and the outer circumference of the signal transmission region 3.
  • the shape of the opening 4 is not particularly limited.
  • the shape of the opening 4 may be, for example, a similar shape to the shape of the signal transmission region 3 or a shape different from the similar shape.
  • FIG. 3 shows an enlarged plan view of the vicinity of the center on the upper side in a modification of the windshield 1 in which the shielding layer 5 is not present below the opening 4.
  • the region surrounded by the phantom line connecting the lowermost ends of both sides of the opening 4 and the shielding layer 5 is the region of the opening 4 It is. That is, even if there is no lower shielding layer 5 in the opening 4, the region surrounded by the phantom line connecting the lowermost ends of both sides of the opening 4 and the shielding layer 5 The whole area is included in the area.
  • the protrusion part 7 in which the opening part 4 is formed should just have the opening part 4, and the area and the shape in particular are not limited.
  • the low radiation layer 6 is provided along at least a part of the periphery of the opening 4 and provided so as to surround at least a part of the signal transmission area 3.
  • the low radiation layer 6 has the effect of suppressing the propagation of heat to the in-vehicle system 40.
  • the in-vehicle system 40 is fixed on the shielding layer 5 by, for example, the housing 43 being bonded to the mounting portion A. This is to improve the design by concealing the place where the in-vehicle system 40 is fixed, to prevent the deterioration of the adhesive layer 44 used in the place to be fixed, and further to shield more than the surface of the plate-like glass member 2. It is because it can be fixed more stably on the surface of 5.
  • the in-vehicle system 40 when the in-vehicle system 40 is fixed on the shielding layer 5 as described above, the distance between the in-vehicle system 40 and the shielding layer 5 becomes short, and the thermal energy absorbed by the shielding layer 5 passes through the opening 4. It becomes easy to propagate to 40.
  • the information transmitting / receiving device 41 is a camera
  • the closer the camera is to the plate-like glass member 2 the larger the viewing angle of the camera with respect to the opening 4 of the same size.
  • a means for making the space between the camera and the plate-like glass member 2 a sealed structure is realistic, but then the heat does not escape from the space. It becomes a factor which gives a load. Therefore, the opening 4 needs measures to suppress such heat propagation to the in-vehicle system 40.
  • the low radiation layer 6 By providing the low radiation layer 6 so as to surround at least a part of the signal transmission region 3, the heat energy absorbed by the shielding layer 5 is prevented from propagating to the information transmission / reception device 41 or the information processing device 42 through the opening 4. it can.
  • the low radiation layer 6 is preferably provided in a region corresponding to 10 to 100% of the entire circumference of the signal transmission region 3 so as to surround the signal transmission region 3. More preferably, they are provided so as to surround the entire circumference of the region 3.
  • the low radiation layer 6 is provided to surround the signal transmission region 3 and along at least a part of the periphery of the opening 4 of the shielding layer 5.
  • the heat propagation suppressing effect by the low radiation layer 6 is larger as the area of the low radiation layer 6 is the same when the thickness of the low radiation layer 6 is the same. Therefore, in order to exert the maximum effect, it is preferable to provide the low radiation layer 6 in the entire region between the outer periphery of the signal transmission region 3 and the outer periphery of the opening 4. On the other hand, in order to ensure the signal transmission area 3 reliably, it is preferable that the low radiation layer 6 be provided at a predetermined distance from the outer periphery of the signal transmission area 3.
  • the low radiation layer 6 is preferably, for example, a low radiation layer configured as shown in plan view in FIG.
  • the low radiation layer 6 shown in FIG. 4 is configured to surround the entire periphery of the signal transmission region 3, the outer periphery of the low radiation layer 6 is in contact with the outer periphery of the opening 4, and the inner periphery of the low radiation layer 6 is a signal transmission region It is provided at a predetermined distance from the outer periphery of 3.
  • the shielding layer 5 does not exist under the opening 4 as in the windshield 1 shown in FIG. 3, the low radiation layer 6 is provided along three sides of the boundary of the opening 4 with the shielding layer 5. It is also good.
  • the low radiation layer 6 is configured to surround the outer periphery other than the lower part of the signal transmission region 3.
  • the width w of the low radiation layer 6 is preferably 3 to 20 mm.
  • the width w is more preferably 5 to 15 mm.
  • the width w of the low radiation layer 6 refers to the distance between the outer circumference and the inner circumference of the low radiation layer 6, and matches the width from the outer circumference of the opening 4 of the shielding layer 5 toward the signal transmission region 3.
  • the distance L between the inner periphery of the low radiation layer 6 and the outer periphery of the signal transmission region 3 is preferably 5 mm or more as the distance L min at the shortest distance, and the distance L at the longest distance is 20 mm or less is preferable as max .
  • the thickness T of the low radiation layer 6 depends on the constituent material or manufacturing method of the low radiation layer 6.
  • the thickness of the low radiation layer 6 is preferably 150 to 250 nm in the case of a vapor deposition film typically manufactured by sputtering, and is preferably 3 to 20 ⁇ m in the case of a silver paste fired film. In the present specification, the thickness of the low radiation layer 6 is the maximum thickness in the region where the low radiation layer 6 is provided.
  • the emissivity of the low radiation layer 6 is preferably 0.8 or less, more preferably 0.5 or less, still more preferably 0.2 or less, and particularly preferably 0.1 or less.
  • the emissivity of the low radiation layer 6 can be measured by the method defined in JIS R3106.
  • the low emission layer 6 is preferably made of metal or metal oxide. Silver is preferred as the metal.
  • the metal oxide is preferably tin-doped indium oxide (ITO).
  • the low radiation layer 6 is preferably made of, for example, a low radiation film such as a silver paste fired film or an ITO film.
  • the low emission layer 6 may be formed of a silver-based multilayer film laminated so that a metal layer containing silver as a main component (hereinafter, also referred to as a silver layer) is sandwiched between dielectric layers.
  • the dielectric layer in the silver-based multilayer film is a layer made of a material mainly composed of metal oxides, nitrides, oxynitrides and the like.
  • the ITO film or the silver-based multilayer film is, for example, a film manufactured by a sputtering method.
  • the low radiation layer 6 can be suitably used if it is a low radiation film.
  • the low radiation layer 6 is preferably a silver paste fired film from the viewpoint of easy formation of a film selectively in a desired region and in terms of cost.
  • the low radiation layer 6 may be provided in a frame shape so as to surround the entire circumference of the signal transmission region 3 in order to enhance the heat propagation suppressing effect as in the low radiation layer 6 shown in FIG. 4. Further, as shown in the plan view of FIG. 5, as a shape in which one part of the frame shape of the low radiation layer 6 shown in FIG. 4 is cut, it is possible to conduct electricity by connecting with an energizing mechanism such as an external power source. It is also good.
  • the low radiation layer 6 shown in FIG. 5 is, for example, in an environment where the outside temperature is low and the sheet glass member 2 is easily fogged and / or easily iced by connecting the two ends to an external power supply.
  • the low radiation layer 6 shown in FIG. 5 for example, when the two end portions are connected to the external power supply and held in the energized state, the plate-like glass member 2 around the signal transmission region 3 is broken. In this case, it is preferable that the low radiation layer 6 is broken because the breakage can be detected.
  • the low radiation layer 6 is formed such that the film thickness of the region near the signal transmission region 3 is thinner than the film thickness of the other regions, or the region near the signal transmission region 3 is formed by a dot pattern. It does not matter.
  • FIG. 6 is a plan view showing an example of the low emission layer 6 formed so that the area near the signal transmission area 3 is formed by a dot pattern.
  • the low radiation layer 6 shown in FIG. 6 can be made the same as the low radiation layer 6 shown in FIG. 4 except that the region near the signal transmission region 3 is formed by a dot pattern.
  • the shape of the dots in the dot pattern is not limited to a circle, but may be an ellipse, a rectangle, a polygon, a star, or the like.
  • the dot portion may be transparent to form a dot pattern in which the low emission layer is provided in the other portion.
  • the windshield 1 shown in FIGS. 1, 2 and 3 is an example in which the low radiation layer 6 is formed in contact with the inner surface Sa of the plate-like glass member 2.
  • the low radiation layer 6 is formed on the inner surface Sa of the sheet glass member 2 as long as it is provided along at least a part of the periphery of the opening 4 and surrounding at least a part of the signal transmission region 3. It may be formed to be in contact with the inner surface of the shielding layer 5 as described above. That is, in the present invention, "the low radiation layer is provided on the inner surface of the plate glass member" includes the case where another layer is present between the low radiation layer and the inner surface of the plate glass member. .
  • the planar shape is a frame shape or a shape in which a frame shape is cut at one place as in FIGS. 4 and 5, but the low radiation layer 6 having a size whose inner periphery matches the outer periphery of the opening 4 May be provided on the inner surface of the shielding layer 5 so that the inner circumference matches the outer circumference of the opening 4.
  • the low radiation layer 6 shown in FIG. 6 may be provided on the inner surface of the shielding layer 5 so that the inner circumference thereof coincides with the outer circumference of the opening 4, but the effect of the dot pattern is not exhibited. Unfavorable from the point of productivity.
  • the dot pattern is provided on the outside as shown in FIG. Is preferred.
  • FIGS. 7, 8, 9, 10 and 11 show vertical cross-sectional views in the vicinity of the opening 4 in the upper part of the windshield 1 in each configuration example.
  • the planar shape of the low radiation layer 6 is, for example, a frame-like shape similar to that shown in FIG. 4.
  • the low radiation layer 6 shown in FIG. 7 is provided such that the inner end face faces the outer periphery of the signal transmission region 3 such that the outer end face is in contact with the end face of the shielding layer 5.
  • the low radiation layer 6 shown in FIG. 7 is configured to have a substantially uniform thickness T throughout the layer.
  • the thickness T, the width w, and the distance L between the inner end face of the low radiation layer 6 shown in FIG. 7 and the outer periphery of the signal transmission region 3 can be the same as described above.
  • the windshield 1 shown in FIG. 8 is a configuration example in which the low radiation layer 6 is provided to cover the end of the shielding layer 5.
  • the low radiation layer 6 shown in FIG. 8 is positioned such that the outer end face is located on the inner surface of the shielding layer 5 beyond the end surface of the shielding layer 5, in other words, the outer end is the inner end of the shielding layer 5
  • the inner end face is provided to face the outer periphery of the signal transmission area 3.
  • the portion provided on the inner end of the shielding layer 5 of the low radiation layer 6 is formed to have a thickness t1 substantially the same as the thickness T of the other portions.
  • the planar shape of the low radiation layer 6 shown in FIG. 8 is, for example, a frame-like shape, and is wider than the low radiation layer 6 shown in FIG. When the low radiation layer 6 has the cross-sectional shape shown in FIG. 8, the shape of the plane viewed from the vehicle outer side looks the same as the low radiation layer 6 having the cross-sectional shape shown in FIG. Is the same.
  • the thickness T of the low radiation layer 6 shown in FIG. 8 and the distance L between the inner end face and the outer periphery of the signal transmission region 3 can be the same as described above.
  • the width w of the low radiation layer 6 shown in FIG. 8 can be made larger than the above width by the width ws of the overlapping portion of the end.
  • the width ws of the overlapping portion of the end is preferably, for example, about 2 to 5 mm.
  • the thickness t1 of the low radiation layer 6 at the overlapping portion of the end portions is preferably about 3 to 20 ⁇ m as in the case of the thickness T.
  • the low radiation layer 6 shown in FIG. 8 is provided so as to cover the end of the shielding layer 5 so that the thermal energy absorbed by the shielding layer 5 can be more effectively transmitted through the opening 4 to the camera or the like. It is possible to suppress propagation to the on-vehicle system 40 including the above.
  • the outer end face of the low radiation layer 6 may be in contact with the end face of the shielding layer 5 as described above.
  • the outer end may be superimposed on the inner end of the shielding layer 5.
  • the planar shape of the low radiation layer 6 is, for example, a frame-like shape similar to that shown in FIG. The sizes are approximately the same.
  • the low radiation layer 6 shown in FIG. 9 is provided on the inner surface of the shielding layer 5 so that the position of the inner end face substantially coincides with the position of the inner end face of the shielding layer 5 and the whole overlaps the shielding layer 5. ing. That is, in the configuration shown in FIG. 9, the low radiation layer 6 is not provided in the opening 4. That is, when the low radiation layer 6 has the cross-sectional shape shown in FIG. 9, the low radiation layer 6 can not be visually recognized from the vehicle outer side, which is preferable in terms of design.
  • the opening 4 and the signal transmission region 3 may have substantially the same area.
  • the low radiation layer 6 be provided at a predetermined distance L from the outer periphery of the signal transmission region 3. Therefore, also in the configuration shown in FIG. 9, the distance L between the inner periphery of the low radiation layer 6 and the outer periphery of the signal transmission region 3 is preferably 5 mm or more as the distance L min at the shortest distance. 20 mm or less is preferable as distance Lmax of the location of the largest distance.
  • the width w of the low radiation layer 6 is the distance between the outer circumference and the inner circumference of the low radiation layer 6, and can be appropriately adjusted according to the formation region of the shielding layer 5.
  • the width w of the low radiation layer 6 can be preferably 3 to 50 mm, more preferably 5 to 30 mm.
  • the width w of the low radiation layer 6 may be the same or different throughout the frame shape.
  • the width w of the low radiation layer 6 in the lower part may be set smaller than the width w of the low radiation layer 6 in the upper part and the left and right sides according to the formation region of the shielding layer 5.
  • the attachment part A of the vehicle-mounted system 40 and the formation area of the low radiation layer 6 do not overlap from an adhesive viewpoint.
  • the thickness T of the low radiation layer 6 is preferably 150 to 250 nm in the case of the vapor deposition film as described above, and is preferably 3 to 20 ⁇ m in the case of the silver paste fired film.
  • the low radiation layer 6 needs to be provided on the vehicle inner side than the shielding layer 5. For example, in the configuration in which the low radiation layer 6 is interposed between the two shield layers 5, thermal energy is transmitted from the vehicle outer shield layer 5 to the vehicle inner shield layer 5 via the low radiation layer 6. is there.
  • the planar shape of the low radiation layer 6 is, for example, a frame shape, and the inner periphery thereof has a size that substantially matches the outer periphery of the opening 4.
  • the low radiation layer 6 shown in FIG. 10 is provided on the inner surface of the shielding layer 5 so that the position of the inner end face substantially coincides with the position of the inner end face of the shielding layer 5 and the whole overlaps the shielding layer 5. ing.
  • the low radiation layer 6 shown in FIG. 10 is an example in which a region separated from the outer periphery of the opening 4 is formed in a dot pattern.
  • the shape of the dots in the dot pattern can be the same as described above.
  • the dot pattern has a configuration in which the width of the dots decreases (w4 ⁇ w3 ⁇ w2) as the distance from the outer periphery of the opening 4 increases and the distance between the dots increases.
  • the area indicated by the width w1 in the low radiation layer 6 is an area where no dot is formed. That is, in the low radiation layer 6 shown in FIG. 10, the area of the dot formation area decreases as the distance from the outer periphery of the opening 4 increases, and the area of the area in which the dots are not formed increases. In other words, the low emission layer 6 shown in FIG.
  • the 10 is configured such that the proportion of the area in which the low emission layer 6 covers the shielding layer 5 decreases as the distance from the outer periphery of the opening 4 increases.
  • the reduction of the area percentage may be gradual or continuous.
  • the width w and thickness T of the low radiation layer 6 shown in FIG. 10, and the distance L between the inner end face and the outer periphery of the signal transmission region 3 can be the same as those described for the low radiation layer 6 shown in FIG.
  • the planar shape of the low radiation layer 6 is, for example, a frame shape in which the outer periphery and the inner periphery substantially match the low radiation layer 6 shown in FIG. Similar to the radiation layer 6, it is provided on the inner surface of the shielding layer 5.
  • the thickness of the low radiation layer 6 shown in FIG. 11 is configured such that the area away from the opening 4 is smaller than the area closer to the opening 4. Specifically, when the height (thickness) of the inner end face of the low radiation layer 6 is T and the height (thickness) of the outer end face is t2, the relationship of T> t2 is satisfied.
  • the low radiation layer 6 shown in FIG. 11 has a configuration in which the thickness decreases with distance from the outer periphery of the opening 4.
  • the reduction of the thickness of the low radiation layer 6 may be stepwise or continuous.
  • the width w of the low radiation layer 6 shown in FIG. 11 and the distance L between the inner end face and the outer periphery of the signal transmission region 3 can be the same as those described for the low radiation layer 6 shown in FIG.
  • the area where the low radiation layer 6 is separated from the outer periphery of the opening 4 is constituted by a dot pattern, and the area ratio of the low radiation layer 6 covering the shielding layer 5 is the area of the opening 4.
  • the configuration in which the thickness of the low-emission layer 6 decreases with distance from the outer periphery of the opening 4 may be combined with the configuration in which the distance decreases with distance from the outer periphery.
  • the ratio of the area covering the shielding layer 5 of the low radiation layer 6 formed on the inner surface of the shielding layer 5 is formed so as to decrease with distance from the outer periphery of the opening 4
  • the configuration or the thickness of the low radiation layer 6 formed on the inner surface of the shielding layer 5 may be reduced as the distance from the outer periphery of the opening is reduced, or by combining these configurations.
  • the radiation of heat energy can be effectively prevented.
  • even if there exists a thermal expansion coefficient difference of the shielding layer 5 and the low radiation layer 6, the residual stress which arises in the plate-like glass member 2 is reduced by applying to the windshield 1 these structures individually or in combination. And impact resistance can be improved.
  • the attachment of the in-vehicle system to the automobile window glass of the present invention can be performed as described above, for example, as shown in FIG. That is, the in-vehicle system 40 is fixed on the shielding layer 5 by, for example, an adhesive or the like by means such as engagement.
  • a sealing portion may be provided to seal the space between the information transmitting and receiving device 41 such as a camera and the inner main surface of the flat glass member 2.
  • the sealing portion may be shaped according to the outer diameter width of the information transmission / reception device 41, or may be shaped so as to seal the entire space formed between the in-vehicle system 40 and the sheet glass member 2 .
  • the space between the information transmitting / receiving device 41 and the plate-like glass member 2 is a sealed space, there is no circulation of air with the outside, and the temperature of the vehicle interior
  • the environment is not affected by changes in humidity. Therefore, fogging such as condensation does not easily occur on the lens surface of the information transmitting / receiving device 41 such as a camera or the signal transmission region 3.
  • it is very important to suppress the propagation of thermal energy to the space itself, since thermal energy from the outside does not escape.
  • the vehicle window glass of the present embodiment can effectively suppress the propagation of thermal energy by providing the low radiation layer around the opening of the shielding layer.
  • the sealed space obtained by sealing by a sealing part is desirable for the sealed space obtained by sealing by a sealing part to be pressure-reduced. Depressurization can reduce the moisture that may be present in the enclosed space.
  • a liquid or gel body having a refractive index of ⁇ 10% or less with respect to the plate-like glass member 2 may be filled in a sealed space obtained by being sealed by a seal portion.
  • the liquid or gel is, for example, a matching oil or gel, and is a refractive index matching agent. By filling a liquid or gel, it is possible to remove moisture in the enclosed space.
  • the automotive glazing of the present invention can be manufactured by commonly known techniques.
  • the method of manufacturing a window glass for an automobile according to the present invention will be described below with reference to a windshield 1 shown in FIG. 1 as an example.
  • the plate-like glass member 2 is a laminated glass.
  • the intermediate adhesive layer 2C is inserted between the in-vehicle glass plate 2A and the out-of-vehicle glass plate 2B to prepare a laminated glass precursor which is laminated glass before pressure bonding.
  • the laminated glass precursor is placed in a vacuum bag, such as a rubber bag, and the vacuum bag is connected to an exhaust system.
  • this pre-bonded laminated glass precursor is placed in an autoclave, and heat and pressure are applied under the conditions of a temperature of about 120 to 150 ° C. and a pressure of about 0.98 to 1.47 MPa to perform main bonding (main pressure bonding) Thereby, the laminated glass 2 can be obtained.
  • the shielding layer 5 made of black ceramic is formed by a conventionally known method. Specifically, a black ceramic paste obtained by adding a powder of heat-resistant black pigment to a resin and a solvent together with a low melting point glass powder and kneading it by printing etc. And a black ceramic layer formed by heating and baking.
  • the black pigment used to form the black ceramic layer also includes a combination of pigments that turns black by the combination of a plurality of colored pigments.
  • the thickness of the shielding layer 5 is as described above.
  • the low radiation layer 6 When using a silver paste fired film as the low radiation layer 6, it can be formed by applying the silver paste to a predetermined region of the inner surface Sa of the laminated glass 2 by printing or the like, and heating and baking it.
  • the silver paste can be prepared, for example, by adding silver powder and low melting point glass powder to a resin and a solvent and kneading them. In the silver paste, the ratio of the silver powder to the low melting point glass powder is appropriately adjusted so as to obtain the emissivity required for the low radiation layer 6 to be obtained.
  • the shielding layer 5 and the low radiation layer 6 can be simultaneously subjected to heating and baking after printing a black ceramic paste to be the shielding layer 5 and a silver paste to be the low radiation layer 6 respectively.
  • the printing of the black ceramic paste and the printing of the silver paste may be performed first if the low radiation layer 6 and the shielding layer 5 do not have an overlapping portion according to the above-described embodiment, but usually First perform printing of the black ceramic paste.
  • the black ceramic paste and the printing of the silver paste can be simultaneously performed, they may be performed simultaneously. If necessary, the black ceramic paste may be printed and fired to form the shielding layer 5, and then the silver paste may be printed and fired to form the low emission layer 6.
  • the silver-based multilayer film and the ITO film can be typically formed by sputtering.
  • a film forming method for example, physical vapor deposition (vacuum vapor deposition, ion plating) other than sputtering, chemical vapor deposition (thermal CVD, plasma CVD, photo CVD), ion beam sputtering, etc. May apply.
  • the shielding layer 5 is formed, masking is performed to selectively form the low emission layer 6 in a predetermined region, and then the low emission layer 6 is formed.
  • a viscous silver paste can be easily applied to a predetermined region without masking, which is preferable.
  • the window glass according to the embodiment of the present invention has been described by taking the windshield as an example using the drawings and the like, the window glass of the present invention is not limited thereto.
  • the design may be changed or modified without departing from the spirit and scope of the present invention.
  • the window glass for vehicles of the present invention is a window glass for vehicles which transmits / receives an information signal, and is suitably used for a window glass for vehicles which carries an information processor inside a vehicle, especially a windshield.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention concerne un pare-brise pour automobiles apte à réduire la charge provoquée par la chaleur qui s'exerce sur des dispositifs de traitement d'informations et des dispositifs d'émission/réception d'informations tels qu'une caméra. Ledit verre à vitre est destiné à des automobiles et permet l'installation, dans l'habitacle, d'un système embarqué pour effectuer l'émission et la réception de signaux d'ondes électriques et/ou de signaux optiques avec l'extérieur du véhicule. Le verre de vitre pour automobiles est caractérisé en ce qu'il comprend un élément en verre de type plaque et une couche de protection disposée sur la surface côté habitacle de l'élément en verre de type plaque de façon à être positionnée le long du périmètre extérieur de l'élément en verre de type plaque ; la couche de protection a une partie saillante qui fait saillie dans une direction dans le plan à partir du centre du bord supérieur de l'élément en verre de type plaque ; la partie saillante a une ouverture présentant une région d'émission de signal pour permettre aux signaux susmentionnés de la travers pendant l'émission/réception desdits signaux ; et une couche à faible rayonnement est disposée sur la surface côté habitacle de l'élément en verre de type plaque de façon à être positionnée le long d'au moins une partie du périmètre extérieur de l'ouverture et à entourer au moins une partie de la région d'émission de signal.
PCT/JP2018/023873 2017-07-13 2018-06-22 Verre à vitre pour véhicule automobile WO2019012962A1 (fr)

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CN201880045768.7A CN110869228B (zh) 2017-07-13 2018-06-22 汽车用窗玻璃
JP2019529030A JP7040526B2 (ja) 2017-07-13 2018-06-22 自動車用窓ガラス

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DE102020106388A1 (de) 2020-03-10 2021-09-16 Audi Aktiengesellschaft Frontscheibenanordnung für ein Fahrzeug
JP7486504B2 (ja) 2019-02-13 2024-05-17 エージーシー グラス ユーロップ 優れた光学品質を有する自動車用ガラス

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JP2021147243A (ja) * 2020-03-13 2021-09-27 日本板硝子株式会社 自動車用窓ガラス
CN112193031B (zh) * 2020-09-16 2022-07-15 福耀玻璃工业集团股份有限公司 一种局部光学质量改善的挡风玻璃及其制造方法
CN112208310A (zh) * 2020-09-28 2021-01-12 福耀玻璃工业集团股份有限公司 一种安装有摄像头的夹层玻璃

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GB2271139A (en) * 1992-10-03 1994-04-06 Pilkington Plc Vehicle window with insert of high infra-red transmittance
JP2008516878A (ja) * 2004-10-18 2008-05-22 ピルキントン グループ リミテッド 日照調整ガラス
JP2011502090A (ja) * 2007-09-05 2011-01-20 サン−ゴバン グラス フランス 電磁放射線用の検出器を有するガラスペイン
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Publication number Priority date Publication date Assignee Title
JP7486504B2 (ja) 2019-02-13 2024-05-17 エージーシー グラス ユーロップ 優れた光学品質を有する自動車用ガラス
DE102020106388A1 (de) 2020-03-10 2021-09-16 Audi Aktiengesellschaft Frontscheibenanordnung für ein Fahrzeug

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CN110869228B (zh) 2023-05-23
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