(1. Basic structure of lighting fixtures)
The lighting device 11 according to the present embodiment is a lighting device that uses a plurality of LED elements 42 as a light source. As shown in Fig. 1, the lighting device 11 is a sealing light directly attached to a mechanism mounting surface (not shown) such as a ceiling. In the following description, the side irradiating the light of the lighting device 11 is set to the side of the illuminating surface of the illuminating device 11, and the side of the illuminating device 11 opposed to the apparatus mounting surface, such as the ceiling, 11 (the ceiling side in the mounted state). The vertical direction of the lighting apparatus 11 will be described as a vertical direction (a vertical direction in Figs. 1 and 2) in a state where the lighting apparatus 11 is installed on a mechanism mounting surface such as a ceiling. And a direction orthogonal to the vertical direction is referred to as a radial direction. In the description of the present embodiment, the state in which the lighting apparatus 11 and the like are viewed from below is referred to as a plan view. The state in which the lighting apparatus 11 and the like are viewed from the perpendicular direction with respect to the up-and-down direction is referred to as a side view. The sectional shape of the lighting device 11 and the like is referred to as a sectional area.
The lighting device 11 mainly includes a main body 21, a power source 31, a light source 41, a translucent cover 51, a power cover 61, a connecting portion 71, a receiving portion 81, 91). The lighting apparatus 11 has a circular shape in a plan view.
The instrument body 21 constitutes the main body of the lighting apparatus 11. [ The instrument body 21 is a member called a so-called "base" or "chassis". The instrument body 21 has a circular outline contour shape in plan view. The instrument main body 21 holds a power source unit 31, a power source cover 61, a protective cover 91, and a translucent cover 51 on the irradiation surface side. The instrument body 21 has a housing portion 23 and a shade mounting portion 28 formed around the housing portion 23 and is integrally formed as a single member. The instrument body 21 has durability and strength capable of holding the power source section 31, the connecting section 71, the power source cover 61, the protective cover 91 and the transparent cover 51, In consideration of thermal conductivity for dissipating the heat generated by the electrodes 41 and 41, is formed using a metal plate such as iron, aluminum, or an alloy thereof. In addition, the instrument body 21 is not limited to the above-described metal material as long as it is a material having high durability, strength, and heat radiation property, and can be formed from other alloying materials and other materials such as resin.
In the present embodiment, the accommodating portion 23 and the shade attaching portion 28 are integrally formed as the instrument main body 21, but the present invention is not limited to this, and the constituent members may be mounted separately .
The accommodating portion 23 is a convex portion protruding toward the mounting surface side and is a portion in the shape of a user container. The accommodating portion 23 is provided at the radial center portion of the instrument body 21 and accommodates therein one end side of the power supply portion 31 and the connection portion 71 and has a power supply portion 31 and a connection portion 71 mounted thereon Section. A wiring part such as a hooking sealing adapter is mounted on the connection part 71 and the lighting device 11 is electrically connected to a wiring mechanism disposed on the mechanism mounting surface side such as a ceiling via wiring parts. The accommodating portion 23 is circular in outer shape when viewed in plan and has a concave shape upward in a cross section and is formed to protrude from the mounting surface side. A connection portion 71 for mounting a wiring component such as an adapter is mounted in the housing portion 23.
The housing portion 23 has a mounting hole 24, a peripheral edge portion 25, a top plate portion 26, and a peripheral wall portion 27.
The mounting hole 24 is a circular opening portion through which a wiring component (not shown) such as an in-hang sealing adapter is inserted when the lighting device 11 is mounted on the ceiling. The mounting hole 24 is provided at a position which becomes the center of the receiving portion 23 in the radial direction.
The peripheral edge portion 25 is a peripheral portion of the mounting hole 24 and is a portion where one end (upper end) of the connecting portion 71 is mounted. The peripheral edge portion 25 has an annular portion 25a and a protruding portion 25b. The protruding portion 25b is formed around the ring portion 25a and protrudes downward. The ring portion 25a is a portion where the flange portion 73 is mounted. The ring portion 25a is provided with a through hole 25c through which the claw 74 is fitted. In the present embodiment, a plurality of (three in this embodiment) through-holes 25c arranged at equal intervals along the circumferential direction of the peripheral edge portion 25 are provided. The ring portion 25a is provided with a first screw fixing portion 25d for fixing the connection portion 71 by a fixing member 22 such as a screw member. The connecting portion 71 is positioned at a predetermined position of the peripheral edge portion 25 by fitting the claw portion 74 into the through hole 25c and the flange portion 73 is fixed to the first screw fixing portion 25d And is fixed by the fixing member 22. That is, the connecting portion 71 is temporarily fixed by fitting the claw portion 74 into the through hole 25c, and is fixed to the first screw fixing portion 25d by the one fixing member 22. [ The projecting portion 25b is annular in plan view and has an inner diameter slightly larger than the outer shape of the flange portion 73 and the connecting portion 71 is disposed inside the projecting portion 25b so that the connecting portion 71 can be positioned have.
The top plate portion 26 is a flat portion formed in the shape of an annulus around the periphery 25. In the top plate portion 26, a power source portion 31 is disposed in a predetermined region in plan view. A plurality of (two in this embodiment) through-holes 26a, into which the claw portions 20 (see Fig. 7) are fitted, are formed at predetermined positions of the top plate portion 26, Is installed. The top plate portion 26 is provided with a second screw fixing portion 26b for fixing one end of the power supply portion 31 by a fixing member 22 such as a screw member. The power source case 35 is positioned at a predetermined position of the top plate 26 by fitting the claw portion 20 into the through hole 26a so that the power source case 35 is positioned at a predetermined position of the top plate portion 26, And one end thereof is fixed to the second screw fixing portion 26b by the fixing member 22. [ That is, the power source case 35 is temporarily fixed by fitting the claw portion 20 into the through hole 26a, and is fixed to the second screw fixing portion 26b by one fixing member 22. [
The top plate 26 is provided with a cushioning material 30 on the mounting surface side of the top plate 26 so as to cover the through hole 26a. The cushioning material 30 is for preventing shaking of the lighting apparatus 11 in a state where the lighting apparatus 11 is mounted on a ceiling or the like. Thereby, it is also possible to prevent insects and the like from entering the lighting apparatus 11 from the through holes 26a.
The top plate 26 is provided with a recess 26c. The concave portion 26c is a portion of the top plate portion 26 extending radially from the radially inner side of the top plate portion 26 to the radially outer side. The concave portion 26c is formed so as to protrude from the mounting surface side. The concave portion 26c is shallowly formed to have a dimension shorter than the thickness dimension of the top plate portion 26. [ When the instrument body 21 is formed by drawing processing, for example, the concave portion 26c serves as a portion into which the workpiece enters, and serves as a portion for correcting deformation, which suppresses deformation of the tool body 21, . It is possible to prevent wrinkles or waving undulations or the like from occurring in the instrument body 21. The concave portion 26c functions as a reinforcing rib for reinforcing the instrument body 21. [ The rigidity of the instrument main body 21 can be improved by providing a plurality of (three in this embodiment) radially extending recesses 26c from the inner periphery side to the outer periphery side of the top plate portion 26. [
3) passing through the center of the accommodating portion 23 and passing through the power supply portion 31 and the connecting portion 71 disposed in the accommodating portion 23, The first screw fixing portion 25d and the second screw fixing portion 26b described above are provided at positions (ubiquitous positions) shifted to one side. For example, when an operator assembling the lighting apparatus 11 faces the connection portion 71 with the power supply portion 31 interposed therebetween (in the case where the operator is on the operator side shown in Fig. 3) The second screw fixing portion 26b and the second screw fixing portion 25d are disposed on the use side (for example, the right hand side) of the operator. Thereby, when the power supply section 31 and the connection section 71 are arranged in the accommodating section 23 and then each is fixed to the accommodating section 23 by the fixing members 22 and 22, Movement can be minimized. When the first screw securing portion 25d and the second screw securing portion 26b are disposed on the user's hand side, the first screw securing portion 25d and the second screw securing portion 26b are provided on the hand side having the mounting tool, The operator is liable to perform the fixing work.
The circumferential wall portion 27 is a tapered portion that is enlarged as it goes downward from the outer periphery of the top plate portion 26.
The shade mounting portion 28 is formed around the accommodating portion 23 and is a peripheral portion of the instrument body 21. The shade mounting portion 28 is provided with a plurality of (three in this embodiment) shade holding portions 29 for holding the translucent cover 51. The plurality of shade holding portions 29 are disposed at substantially equal intervals in the shade mounting portion 28. [
The instrument body 21 of the present embodiment is formed by press working in a generally circular shape which is symmetrical as a whole. By the press forming in this way, the pressure is easily applied uniformly to the sheet metal, and the forming accuracy can be improved.
The power supply unit 31 includes a power supply circuit unit 32 and a power supply case 35. [ One end side of the power source section 31 is accommodated and fixed in the accommodating section 23 and the other end side is accommodated in the power cover 61.
The power supply circuit portion 32 is a power supply circuit for supplying power to the LED element 42 (see Fig. 6) and lighting the LED element 42. Fig. The power supply circuit portion 32 includes a printed wiring board processed into a substantially circular arc shape having a predetermined width. The power supply circuit portion 32 is provided with a connector 34 through wiring. The connector 34 is disposed at a predetermined position of the connection portion 71. When the lighting device 11 is mounted on a mechanism mounting surface such as a ceiling or the like, the connector 34 is connected to a connector (not shown) on the side of the wiring mechanism so that the power supply circuit portion 32 is connected to the ceiling wiring device And is electrically connected to an external commercial power supply. The power supply circuit portion 32 and the light source portion 41 are electrically connected to each other by a wiring 50.
The wiring 50 is electrically connected to the power supply circuit portion 32 and supplies power to each of the LED light source modules 44. [ The wiring 50 has the number and length necessary for connection from the power supply circuit portion 32 to the connection terminal 49 of each LED light source module 44 and is arranged by the wiring holding member 69 Respectively. The wiring 50 is connected to each of the LED light source modules 44 through a plurality of insertion holes 63a for taking out wiring corresponding to each of the LED light source modules 44. [ The wire holding member 69 may be, for example, a binding band or the like.
The power source case 35 is made of a resin material. The power supply case 35 is a member of a user container shape whose one end is opened. The power supply case 35 is a member having electrical insulation. The power supply case 35 is provided with a power supply circuit arrangement portion 36 in which the power supply circuit portion 32 is accommodated and a reception portion arrangement portion 37 in which the board for the reception portion 83 is received. The power supply circuit arrangement portion 36 has a plurality of (four in this embodiment) engaging portions 38 (see Fig. 7) on its peripheral portion. The engaging portion 38 engages the peripheral edge of the power supply circuit portion 32 when the power supply circuit portion 32 is accommodated in the power supply circuit arrangement portion 36. [ As shown in Fig. 7, a plurality (two in this embodiment) of the claw portions 35 protruding laterally are formed on the mounting surface side (the surface opposite to the arrangement side of the power supply circuit portion 32) (20) are provided. The claw portion 20 is fitted into the through hole 26a. The power supply case 35 is formed in such a manner that the claw portion 20 of the power supply case 35 is fitted into the through hole 26a provided in the top plate portion 26, And one end of the power source case 35 is fixed to the second screw fixing portion 26b by the fixing member 22. In addition, Specifically, the power source case 35 and the power source board 33 are fixed together with the second screw fixing portion 26b by the one fixing member 22. That is, the power source case 35 is temporarily fixed by fitting the claw portion 20 into the through hole 26a, and is fixed to the second screw fixing portion 26b by one fixing member 22. [
The receiving section arrangement section 37 is provided adjacent to the power supply circuit arrangement section 36 and is a section for mounting the reception section 81. [ The receiving portion arranging portion 37 has a plurality of (two in this embodiment) engaging portions 39 on the periphery of the receiving portion arranging portion 37. [ The engaging portion 39 engages the periphery of the receiving portion substrate 83 when the receiving portion placing portion 37 receives the receiving portion substrate 83. [ The receiving section arrangement section 37 is disposed at a position corresponding to the light receiving window 63b of the power source cover 61. [ By constituting the power supply case 35 as described above, the power supply circuit portion 32 (the power supply substrate 33) and the board for the receiver portion 83 are integrated. The power supply circuit portion 32 and the board for the receiver portion 83 are mounted on the top plate portion 26 through the power supply case 35. As a result, the electrical insulation between the power supply circuit portion 32 and the board for the receiver portion 83 and the instrument body 21 can be ensured. The power supply unit 31 and the receiving unit 81 can be simultaneously mounted on the instrument body 21 by uniting the power supply circuit unit 32 and the board for the receiving unit 83 by using the power supply case 35, . It is also possible to separate the work for assembling the power supply circuit portion 32 and the board for the receiving portion 83 into a unit by using the power supply case 35 and the work of mounting the unit on the main body 21. The power source case 35 may be provided with an insulating power source circuit cover which covers the irradiation surface side of the power source circuit arrangement portion 36 and is substantially circular in plan view. It is not necessary to provide an insulation distance between the power supply circuit and the non-insulating power cover 61, and the lighting apparatus can be made thin.
The receiving section arrangement section 37 is provided in the vicinity of the inner periphery of the power supply circuit section 32. The receiver section arrangement section 37 is provided standing up with a predetermined height on the irradiation surface side of the power supply circuit arrangement section 36 and is formed so that the receiver section board 83 is arranged near the top of the power supply cover 61 . That is, the power source board of the receiver part board 83 and the power source circuit part 32 are arranged at a predetermined distance in the vertical direction.
The power source board 33 has a concave portion 33a which is substantially arcuate and flat and cut in a concave shape when viewed in plan view (see Fig. 7). The substrate 83 for the receiving portion is disposed in the concave portion 33a when the power supply substrate 33 is flat. As a result, the wiring connecting the board 83 for the receiver part and the power supply board 33 can be made as short as possible. The substrate 83 for the receiver part is arranged on the power supply substrate 33 at positions that do not overlap in the vertical direction. The area of the substrate 83 for the receiver part is smaller than the surface area (area in the plan view) of the space formed by the recess 33a and the shape of the substrate 83 for the receiver part is smaller than the surface area And enters into the concave portion 33a of the base portion 33a. As a result, the power source substrate 33 and the receiving portion substrate 83 can be efficiently cut on the substrate material (original substrate) from which the substrate is cut, and the portion of the substrate material that is discarded is reduced. 7 shows only the connector 321 which will be described later in order to clearly show the structure of the power supply board 33, The city was omitted.
The power supply cover 61 is a member that covers at least a part of the irradiation surface side of the power supply unit 31 and the connection unit 71. In the present embodiment, the power supply cover 61 also covers a part of the irradiation surface side of the receiving section 81 and the connection section 71. The power cover 61 is a member on which the light source unit 41 is mounted. The power cover 61 is mounted on the irradiation surface side of the accommodating portion 23 of the instrument body 21. A connection portion 71 for mounting a wiring component such as an adapter is mounted inside the power supply cover 61. The power supply cover 61 has an opening 62, an inner peripheral edge portion 63, a light source arrangement portion 64, an outer peripheral edge portion 65, a peripheral wall portion 66, and a flange portion 67. The power cover 61 has a light source arrangement portion 64 at the top of the irradiation surface side.
The opening 62 is a circular opening portion through which the connecting portion 71 is exposed. The opening 62 is provided at a position that becomes the center of the power cover 61 in the radial direction.
The peripheral edge portion 63 is a peripheral portion of the opening 62, and is annular in plan view. The inner peripheral portion of the inner periphery 63 is a portion where the other end (lower end) of the connection portion 71 is mounted by the fixing member 22. A threaded hole for mounting the other end of the connecting portion 71 with the fixing member 22 is provided in the vicinity of the inner periphery of the inner periphery 63. A plurality of (four in this embodiment) insertion holes (not shown) for inserting the wiring 50 for electrically connecting the LED light source module 44 and the power source unit 31 are formed in the peripheral portion of the inner peripheral portion 63, (Not shown). The plurality of insertion holes 63a are arranged substantially evenly in the circumferential direction of the inner peripheral edge portion 63. [ In the peripheral edge portion 63, a light receiving window 63b is provided at a position corresponding to the light receiving portion 82. [ The inner peripheral portion 63 is provided with a through hole 63c for exposing one end of the channel changeover switch 84 communicating with the light receiving window 63b. The light receiving window 63b and the through hole 63c are substantially L-shaped openings in plan view.
The light source arrangement portion 64 is a portion where the light source portion 41 is disposed. The light source arranging portion 64 is a recess having a substantially annular shape in plan view and a flat surface as a bottom surface. The back surface of the flat surface of the light source arrangement portion 64 is a protruding surface that protrudes toward the mounting surface side. The light source arrangement unit 64 is formed to fit at least a part of the outer shape of the substrate 43 and the LED light source module 44 can be disposed in the light source arrangement unit 64. The light source arrangement portion 64 is provided on the outer side in the radial direction of the inner peripheral edge portion 63.
The light source arranging portion 64 is arranged around the outer peripheral side of the inner peripheral edge portion 63 in a substantially annular shape. A plurality of (four in this embodiment) LED light source modules 44 can be fitted at predetermined positions and the LED light source module 44 is mounted on the flat surface of the light source arrangement portion 64. [ As shown in FIG. As shown in Fig. 5, the light source arrangement portion 64 is formed with an engaging portion 64a and an engaging convex portion 64b. The engaging portion 64a is a portion in which at least a part of the engageable convex portion 43c is formed to be insertable and is a portion where the engageable convex portion 43c is engaged. The engaging convex portion 64b is a portion formed in conformity with the shape of the engaging concave portion 43d and is a portion where the engaging concave portion 43d is engaged. Since the light source arrangement portion 64 functions as a heat radiation portion that transfers heat generated in the light source portion 41 and emits the heat to the outside, the light source arrangement portion 64 has a contact area with the bottom portion of the light source portion 41, And is formed flat so as to be widened.
In the vicinity of both ends of the inner circumferential side of the light source arrangement portion 64, a fitting portion 64c to which the fitting convex portion 43e is fitted is provided. In the vicinity of the fitting portion 64c, an insertion hole 69a for inserting and passing the wire holding member 69 is provided.
The outer peripheral edge portion 65 is provided outside the light source arrangement portion 64 in the radial direction. A plurality of (eight in this embodiment) through holes 68 for fitting the claw portions 95 of the protective cover 91 are provided in the outer peripheral edge portion 65. [
The circumferential wall portion 66 is a tapered portion which is enlarged as it goes downward from the outer periphery of the outer circumferential edge portion 65. [
The flange portion 67 is an annular portion protruding radially outward from the outer periphery of the lower end of the circumferential wall portion 66. The flange portion 67 is a portion abutting against the instrument main body 21 when the power source cover 61 is attached to the instrument main body 21. A plurality of (four in this embodiment) fixing portions are provided on the flange portion 67 and are mounted on the instrument body 21 by fixing members such as screws.
As shown in Fig. 4, the power supply cover 61 has a wiring holding member 69 for holding the wiring 50 on the mounting surface side. The wire holding member 69 of the present embodiment is provided with a plurality of (four in this embodiment) insertion holes 63a for taking out the wirings 50 substantially evenly arranged in the circumferential direction of the inner peripheral edge portion 63 Respectively. The wires 50 are not displaced in the power supply cover 61 and the power supply circuit portion 32 and the like are difficult to contact because the wires 50 are held by the wire holding member 69. [ In addition, since the wiring is held in advance on the inner wall of the power supply cover 61, the handling property is good and workability is improved.
The power cover 61 covers the housing portion 23 of the instrument main body 21 on which the power source portion 31 and the connecting portion 71 are mounted and the other end of the power source portion 31 and the connecting portion 71 Is housed in the power cover 61, and the flange portion 67 is mounted so as to abut the instrument body 21. The power supply cover 61 is mounted on the irradiation surface side of the accommodating portion 23 so that a flat space is formed by the power supply cover 61 and the accommodating portion 23 and the power supply portion 31, The height and width for accommodating the receiving section 81 and the like are ensured.
The power supply cover 61 of the present embodiment is formed by press working in a substantially circular shape which is symmetrical as a whole. By the press forming in this way, the pressure is easily applied uniformly to the sheet metal, and the forming accuracy can be improved.
The power supply cover 61 is provided with the durability and strength capable of holding the light source unit 41, the connection unit 71 and the protective cover 91 and the like for dissipating the heat generated by the power supply unit 31 and the light source unit 41 Is formed by using a metal plate such as iron, aluminum, or an alloy thereof in consideration of thermal conductivity. In addition, the instrument body 21 is not limited to the above-described metal material as long as it is a material having high durability, strength and heat dissipation property, and can be formed of other alloying materials or other materials such as resin.
The light source portion 41 is a portion that emits light toward the irradiation surface side of the lighting device 11. [ The light source unit 41 has a flat plate shape having a plurality of LED elements 42 and disposed on the surface of the light source arrangement unit 64 on the irradiation surface side. More specifically, the light source section 41 has a plurality of (four in this embodiment) LED light source modules 44, and each of the LED light source modules 44 is mounted on a substrate 43 And an LED element 42, which is a plurality of point light sources, is mounted. The plurality of LED elements 42 are arranged in substantially concentric circles around the opening 62 of the power source cover 61 at substantially equal intervals. The LED light source module 44 is arranged at a position closer to the irradiation surface than the shade holding portion 29. [ As a result, the shadows of the shade retaining portion 29 hardly come out from the translucent cover 51.
As shown in Fig. 6, the substrate 43 is formed in a substantially circular arc shape having a predetermined width in plan view. It is preferable that the substrates 43 have the same shape and the same area because they are easy to manufacture. The substrate 43 has end portions 43a formed at both ends in the circumferential direction along the radial direction. Each of the LED light source modules 44 is arranged in the light source arrangement portion 64 so as to face the circumferential end portions 43a. In addition, the plurality of LED light source modules 44 may be connected as one unit by connecting the LED light source modules 44 with connecting parts mechanically connected to each other. The light source portion 41 having a substantially annular shape can be formed by disposing a plurality of (four in this embodiment) LED light source modules 44 in the light source arranging portion 64 with the end portions 43a opposed to each other . An engaging concave portion 43d which is engaged with the engaging convex portion 64b is provided at the end portion 43a of the substrate 43. [ An engaging convex portion 43c engaged with the engaging portion 64a is provided on the outer peripheral end 43b of the substrate 43. [ Near the both ends of the inner peripheral side of the substrate 43, there is provided a fitting convex portion 43e fitted to the fitting portion 64c. The LED light source module 44 is configured to engage the engageable convex portion 43c and the to-be-engaged concave portion 43d with the engaging portion 64a and the engaging convex portion 64b, 64). That is, the LED light source module 44 corresponds to the engagement shape portions (the engagement portion 64a and the engagement convex portion 64b) provided in the light source arrangement portion 64 of the power source cover 61 for alignment And engageable convex portions 43c and engageable concave portions 43d. The LED light source module 44 is arranged at a predetermined position in the light source arrangement portion 64 by fitting the fitting convex portion 43e into the fitting portion 64c. Each of the LED light source modules 44 is electrically connected to the power source section 31 by a wiring 50 corresponding to each. Each LED light source module 44 is fixed to the light source arrangement portion 64 so that the back surface of the mounting surface of the substrate 43 is fixed to the LED light source module 44. When each LED light source module 44 generates heat, The heat is transferred to the power cover 61 or the main body 21. The heat transmitted to the power cover 61 is transmitted to the air around the power cover 61 when the ambient temperature is lower than the temperature of the power cover 61. As a result, the heat transmitted to the power cover 61 is dissipated to the periphery of the power cover 61.
Further, each of the LED light source modules 44 may be mounted on the light source arrangement portion 64 via a thermally conductive sheet (not shown) or a heat dissipation grease, whereby higher heat dissipation can be obtained.
In this embodiment, surface-mounted LED elements, which are an example of light emitting elements, are used as light sources. However, the types of light sources are not limited to LED elements. For example, COB type light emitting modules, organic EL elements It can be realized.
The translucent cover 51 is mounted on the instrument body 21 so as to cover the irradiation surface side of the instrument body 21 and the power supply cover 61. The translucent cover 51 is a member that reflects and diffuses light from the light source unit 41 and distributes the light to the outside. The translucent cover 51 includes a shade or the like. The translucent cover 51 is made of a resin material having translucency. The overall shape of the translucent cover 51 is circular in plan view and swells gently in a dome shape on the lower surface side. The translucent cover 51 has a structure that can be attached to and detached from the instrument body 21 for cleaning the interior of the translucent cover 51 and for replacing the parts of the instrument body 21. (Not shown) for mounting the translucent cover 51 on the shade holding portion 29 is formed at the opening edge portion on the upper surface side of the translucent cover 51. [ The shape of the translucent cover 51 in this embodiment is merely an example, and may be a dome shape, a cylindrical shape, a square shape, or the like.
The instrument main body 21 is provided with a shade holding portion 29 serving as a mounting mechanism for holding the portion to be held of the transparent cover 51. The transparent cover 51 is disposed at the mounting position of the instrument body 21 and is rotated in one of the circumferential directions of the transparent cover 51 so that the portion to be held of the transparent cover 51 is held in the shade holding portion 29 And the translucent cover 51 is mounted on the instrument body 21. When the translucent cover 51 is turned to the other side in the circumferential direction while the translucent cover 51 is mounted on the instrument body 21, the held portion of the translucent cover 51 is separated from the shade holding portion 29 , The translucent cover 51 can be removed from the instrument body 21.
The connecting portion 71 is a portion for mounting a wiring component such as an indented sealing adapter. 9, the connecting portion 71 includes a cylindrical portion 72 having a larger diameter than the opening portion 62 and a cylindrical portion 72 extending radially outwardly from the outer periphery of one end (upper end) of the cylindrical portion 72 And has a flange portion 73. The flange portion 73 is provided with a fixing hole portion 75 for fixing one end (upper end) of the connecting portion 71 to the instrument body 21 by a fixing member such as a screw. A plurality of (three in this embodiment) claw portions 74 that are fitted to the through holes 25c of the instrument body 21 protrude upward from the mounting surface side of the flange portion 73 . The claw portion 74 is fittable to the through hole 25c. A fixing hole portion 75 for fixing to the first screw fixing portion 25d by the fixing member 22 is provided at a predetermined position of the flange portion 73. [ The connecting portion 71 is fitted to the peripheral edge portion 25 by the fixing member 22 while fitting the claw portion 74 into the through hole 25c. A fixing hole portion for fixing the connecting portion 71, the power source cover 61 and the protective cover 91 together by a fixing member such as a screw is provided on the outer periphery of the other end side (lower end side) of the cylindrical portion 72 have. The connection portion 71 is fixed so as to be sandwiched between the accommodating portion 23 of the instrument body 21 and the power supply cover 61.
An insertion hole 72a for inserting a connector 34 extending from the power supply unit 31 is formed in the cylindrical portion 72. [ When the lighting apparatus 11 is mounted on a ceiling, a wiring component such as a hooking and sealing adapter is attached to a ceiling wiring mechanism (a base and a ceiling wiring body) for a lighting apparatus, and a mounting hole 24 The wiring component is inserted into the connection portion 71 together with the wiring component being pierced.
The receiving section 81 is a section for receiving a radio signal (a signal by infrared rays in this embodiment) from a remote controller (not shown). The receiving section 81 has a board 83 for the receiving section on which the light receiving section 82 is mounted. The substrate 83 for the receiver part is arranged in the receiver part arrangement part 37. [ A channel changeover switch 84 is mounted on the substrate 83 for the receiver. The receiving portion 81 is disposed in the vicinity of the opening portion 62 in a plan view. The light receiving section 82 is arranged close to the light receiving window 63b. The substrate part 83 for the receiving part is held by the receiving part arranging part 37 by engaging with the engaging part 39. [ The light receiving portion 82 is arranged to be exposed from the light receiving window 63b. The receiving section 81 is electrically connected to the power supply circuit section 32. The light receiving section 82 can receive a remote control signal using a radio signal transmitted from a remote controller operated by a user as a transmission medium. By transmitting a predetermined signal to the light receiving section 82 by the remote controller, the user can remotely operate the LED light source module 44 (LED element 42) to turn on, off, dimming, and the like. The substrate 83 for the receiving portion is disposed in the accommodating portion 23 in a state in which it is disposed in the receiving portion arranging portion 37. [ The board 83 for the receiving portion on which the light receiving portion 82 and the channel changeover switch 84 are mounted is disposed on the inner peripheral side of the substantially arc-shaped power supply circuit portion 32 in plan view.
In the present embodiment, the receiver 81 is provided, but the present invention is not limited to this, and other sensor control methods may be employed. It is also possible to control it by wire instead of by a wireless signal, and in this case, it is not necessary to provide a receiver.
The protective cover 91 is a member that covers the light source portion 41 between the power source cover 61 and the translucent cover 51. The protective cover 91 is disposed between the light source section 41 and the transparent cover 51. The protective cover 91 has a light transmitting property and is formed of, for example, a resin material having translucency. The protective cover 91 is a substantially annular member in plan view and includes an inner peripheral portion 92, a light source cover portion 93, an outer peripheral flange portion 94, a claw portion 95 ).
The inner circumferential portion 92 is a substantially annular flat portion disposed at the center of the power source cover 61. The inner peripheral portion 92 is provided with a screw fixing portion 96 for fixing the protective cover 91, the power source cover 61 and the connection portion 71 together by a fixing member 99 such as a screw. The inner circumferential portion 92 is provided with a convex portion 92a serving as a receiver position mark indicating the position where the receiving portion 81 is disposed at a position corresponding to the light receiving portion 82 (the irradiation surface side of the light receiving portion 82) And an insertion hole 92b for inserting a distal end portion of the insertion hole 84 into the insertion hole 92b. The convex portion 92a is adjacent to the insertion hole 92b. In the vicinity of the insertion hole 92b, a depressed portion 92c (see Figs. 2 and 11) indicating the channel number of the channel change-over switch 84 is provided on the surface of the irradiation surface side. When the protective cover 91 is attached to the power cover 61, the inner periphery 92 of the protective cover 91 comes into contact with the irradiation surface side of the inner periphery 63 of the power cover 61, (See FIG. 10).
In addition, the convex portion 92a serving as a receiver position mark may be configured as a lens portion. It is easy to receive the predetermined signal (for example, infrared rays) transmitted from the remote controller by the lens unit and to guide the light by the light receiving unit 82 disposed in the power cover 61. [
The light source cover portion 93 has a convex shape toward the irradiation surface side. Specifically, the light source cover portion 93 is formed in a radially outer side of the inner peripheral portion 92, and is a convex portion swollen toward the irradiation surface side so as to have a predetermined gap with respect to the light source portion 41 . The light source cover portion 93 has a wiring cover portion 93a extending radially inward. The wiring cover portion 93a has an insertion hole 63a and wiring 50 extending from the insertion hole 63a and a portion covering the portion where the wiring 50 is connected to each LED light source module 44 to be. The vicinity of the outer periphery of the light source cover portion 93 and the vicinity of the inner periphery of the light source cover portion 93 except for the wiring cover portion 93a are provided in the LED light source module 44 to the outer peripheral end and the inner peripheral end of the substrate 43. That is, the outer peripheral edge portion and the inner peripheral edge portion of the substrate 43 are sandwiched and fixed by the light source arrangement portion 64 and the light source cover portion 93. That is, each LED light source module 44 is fixed on the power source cover 61 without using a fixing member (mounting member) such as a screw or a screw by attaching the protective cover 91 to the power source cover 61.
The light source cover portion 93 is provided with a plurality of (eight in this embodiment) through holes 97 in the shape of an elongated hole along the circumferential direction on the inclined surface on the outer peripheral side. The through hole 97 functions as an insect removal hole. The through hole 97 is disposed between the claw portions 95.
In this embodiment, though the through hole 97 is provided on the outer peripheral side of the light source cover portion 93, the through hole 97 is not particularly limited and may be provided on the inner peripheral side of the light source cover portion 93.
The through hole 97 is provided at a position outside the diffraction angle of the LED element 42. [ By providing the through hole 97 on the outside of the diffusing angle, the shadow of the through hole 97 is hard to emerge.
It is also possible to have a diffusion processing portion which is formed by diffusing light from the LED element 42 on the outer peripheral side of the light source cover portion 93. [ This prevents shadows caused by the inclined portions on the outer peripheral side of the light source cover portion 93 from being generated. The diffusion processing may be performed only on the outer circumferential side of the light source cover portion 93, or may be performed on the whole.
The outer flange portion 94 is a flat portion continuously formed around the light source cover portion 93. A plurality of (eight in this embodiment) claw-like claw portions 95 for fitting into the through holes 68 provided in the power supply cover 61 are formed in the outer peripheral flange portion 94. The claw portions 95 of the present embodiment are provided at two positions with respect to one LED light source module 44. The claw portion 95 can hold the end portion of the through hole 68 in a U-shape in which the intermediate portion is folded. The protective cover 91 can substantially cover the inner periphery 63, the light source arrangement portion 64 and the outer periphery portion 65 of the power supply cover 61. [
The protective cover 91 has a claw portion 95 provided on the outer peripheral portion of the protective cover 91 and a through hole 68 provided in the power cover 61 to be fitted and fixed, And is fixed together with a power supply cover 61 and a connection portion 71 at the edge portion by using a fixing member such as a plurality of screws. By combining the fitting between the claw portion 95 and the through hole 68 and the fixing by the fixing member, the number of parts can be reduced and the manufacturing cost can be reduced. In addition, by fixing the protective cover 91, the power source cover 61, and the connecting portion 71 together, the amount of use of fixing members such as screws and screws is reduced, thereby reducing the number of parts and reducing the manufacturing cost. Since the outer periphery side of the protective cover 91 is fitted and fixed by the claw portion 95 and the through hole 68 and the inner peripheral side is fixed by the fixing member, The fixing position by the fixing member is gathered in the vicinity of the center of the power cover 61 at the time of work so that the fixing work can be performed without changing the position of the power cover 61 such as rotation.
The protective cover 91 is formed so as to have a generally symmetrical concavo-convex shape. The resin material is uniformly filled in the mold in the resin molding for manufacturing the protective cover 91, and the moldability is good.
(2. Action and effect of the present embodiment, etc.)
The lighting unit 11 according to the present embodiment is configured such that the power supply unit 31 is accommodated in the accommodating portion 23 of the instrument body 21 and the claw portion 20 provided in the power supply unit 31 (power supply case 35) Of the power supply unit 31 (the power supply case 35) is fitted to the through hole 26a provided in the instrument main body 21 (the top plate 26 of the accommodating portion 23) And is fixed to the second screw fixing portion 26b using a fixing member 22 such as a screw. The connection portion 71 is accommodated in the accommodating portion 23 and the claw portion 74 is fitted and fixed in the through hole 25c and the connection portion 71 is fixed to a fixing member such as a screw or a screw, (The accommodating portion 23) by using the screw 22 as shown in Fig. When mounting the power supply unit 31 and the connection unit 71 to the instrument body 21 as described above, the first screw fixing unit 25d and the second screw fixing unit 25d, which are the fixing positions (mounting positions) of the fixing members 22, The fixing portion 26b is localized on one side of the left and right as viewed from the operator. As described above, the power supply unit 31 and the connection unit 71, which are attached to the instrument body 21, are fitted to the instrument body 21 by the claws and the through holes, respectively, It is possible to set at least (one position in the present embodiment) the fixing position using the fixing member by screw or the like. By reducing the number of parts such as screws and screws, it is possible to reduce the manufacturing cost and the number of assembling steps. By fixing the fixing position of the fixing member (the first screw fixing portion 25d and the second screw fixing portion 26b in this embodiment) to one of the right and left sides when viewed from the operator, The sex improves. For example, if the worker is a right-handed person, if the fixing position of the fixing member is on the right side toward the instrument body 21, the fixing position of the fixing member is easy to work because there is a fixing position of the fixing member.
In the lighting device 11, the substrate 43 is sandwiched and fixed by the light source arrangement portion 64 and the light source cover portion 93. [ That is, each LED light source module 44 is fixed on the power source cover 61 without using a fixing member such as a screw or a screw by attaching the protective cover 91 to the power source cover 61. As a result, the number of parts can be reduced, and the stress caused by fastening of the fixing member to the LED light source module 44 is small, because it can be fixed without using a fixing member such as a screw or a screw. In addition, it is possible to reduce the number of assembling steps by fixing without using a fixing member such as a screw or a screw. In addition, since no fastening holes such as screws or screws are provided on the substrate 43, the substrate can be made smaller and the degree of freedom in arranging the LED elements in the substrate can be improved.
In the lighting device 11, the light source arranging portion 64 is provided with the engaging portion 64a and the engaging convex portion 64b that match the shape of the substrate 43, and the engaging portions 64a and 64b The engaging convex portion 64b is engaged with the engaged convex portion 43c and the engaged concave portion 43d so that the LED light source module 44 can be easily placed at the proper position on the power cover 61 .
In the lighting apparatus 11, the light source unit 41 having a substantially circular arc shape is formed by a plurality of substantially arc-shaped LED light source modules 44 having a predetermined width. In this manner, when the plurality of LED light source modules 44 are combined in a substantially annular shape, when the plurality of substrates 43 are cut out from one plate-like substrate material, the substrates 43 are arranged side by side on the substrate material The manufacturing cost is reduced because the number of parts to be discarded is smaller than the case where the annular substrate is cut from the substrate material, and the manufacturing yield is improved. In addition, with such a configuration, the handling property is improved and the working efficiency is improved.
In the lighting device 11, the convex portion 92a serving as a receiver position mark and the marking portion 92c indicating a channel switching position are provided on the surface of the protective cover 91. [ It is not necessary to separately provide a cover for the receiver and a channel switching indication covering the irradiation surface side of the receiver 81 by providing the convex portion 92a and the engraved portion 92c on the surface of the protective cover 91, Can be reduced. Although the engaging portion 92c is formed in a concave shape in the present embodiment, the engaging portion 92c is not limited thereto and may be formed in a convex shape.
In the lighting apparatus 11, a through hole 97 is formed in an inclined surface on the outer circumferential side of the light source cover portion 93. By providing the through holes 97, it is possible to easily remove insects, dust and the like, as well as to improve air permeability between the inside and the outside of the protective cover 91 by convection of air, and heat dissipation is improved.
The illumination device 11 is provided with a light receiving window 63b and a channel changeover switch 84 for exposing one end of the channel changeover switch 84 at a position corresponding to the light receiving portion 82 of the receiver 81, And a through hole 63c is provided. It is possible to reduce irregularity (unevenness) of the light receiving sensitivity of the remote control signal transmitted from the irradiation surface side (upper side) of the lighting device 11 by providing the light receiving window 63b near the central portion of the lighting device 11. [ In addition, a cover member for covering the receiving section 81 and the like is not required, and the number of parts can be reduced.
In the lighting apparatus 11, the power supply unit 31 and the connection unit 71 are mounted on the irradiation surface side of the accommodating unit 23 and the light source unit 41 is disposed on the irradiation surface side of the power supply cover 61, . This configuration makes it possible to attach the power supply unit 31 and the connection unit 71 to the accommodating unit 23 in the assembling process of the illuminator 21 and to attach the light source unit 41 to the power supply cover 61 Since the process can be divided into individual processes, the efficiency of the assembling process can be improved.
The shape of the above-described lighting device 11 is merely an example, and is not limited to the above-described form. For example, although the lighting device 11 is annular, it may be a square or other shape. In addition to the sealing light, a pendant light or the like may be applied.
The shape of the above-described instrument body 21 is an example, and is not limited to the shape of this embodiment. For example, when the shape of the lighting device 11 is a rectangular shape other than an annular shape or other shape, the shape can be made accordingly. In addition, the shape of the instrument body 21 can be appropriately modified in accordance with the shape of the power supply unit 31.
(3. Circuit configuration of lighting fixtures)
In the lighting apparatus disclosed in Japanese Patent Laid-Open Publication No. 2013-58503, it is necessary to use a substrate provided with terminals for connecting terminals to be connected to power supply connection portions and terminals for connecting to the power supply connection portions, and two terminals for connecting the substrates have. As a result, there is a problem that cost increase and management become complicated by manufacturing two kinds of substrates. In the assembly operation, the arrangement of the two types of substrates and the connection order of the substrates are determined. Therefore, the assembling operator must take care not to misplace the substrate or to make the connection order of the substrates wrong. As a result, it is difficult to reduce the assembling time and the working efficiency is lowered.
In the case of connecting a plurality of substrates in common, that is, when a plurality of light emitting modules (light emitting elements) are electrically connected, either serial connection or parallel connection is used. Here, assuming that the light emitting module has a broken wire, if a series connection is made, if a single wire failure occurs in one light emitting module, no current flows to all the light emitting modules. On the other hand, in the case of a parallel connection, it is necessary to take measures such as providing an overcurrent protection circuit, since an overcurrent occurs because current flows to other light emitting modules even if a single light emitting module fails to break. Therefore, the parallel connection has a more complicated circuit configuration than the serial connection, leading to an increase in size and cost of the power supply circuit portion.
12 is a circuit diagram for explaining the connection between the power supply circuit portion 32 and the light source portion 41. Fig. 12, the four LED light source modules 44 are referred to as a first module 441, a second module 442, a third module 443, and a fourth module 444, respectively, for convenience of explanation. 12, modules of the same specification are used for the first to third modules 441 to 443 and modules of the same specification as the first to third modules 441 to 443 are used for the security module And the LED element 445 is added. The LED element 445 for security light is an LED element capable of emitting light having a correlated color temperature lower than the correlated color temperature of the LED element 42, for example.
In the case of using an LED light source module capable of controlling coloring by mounting LED elements of a plurality of colors, it is possible to dim the LED elements of one color among the LED elements of a plurality of colors (for example, LED elements having a low correlation color temperature) The security function 445 can be unnecessary. In this case, modules of the same specification can be used for the first to fourth modules. The first module 441, the second module 442, the third module 443, and the fourth module 444 are examples of light emitting elements.
As shown in Fig. 12, an external commercial power source is connected to the power source circuit portion 32 (power source board 33) through the connector 34. [ The power supply circuit portion 32 is provided with a connector 321 for individually connecting to the first to fourth modules 441 to 444 electrically. Although the connector 321 is one connector in the present embodiment, it may be a separate connector for connecting the modules 441 to 444, respectively.
In the connector 321, 11 pins (P1 to P11) are arranged as terminals. The pins P1 to P8 are terminals for the LED elements 42 of the first to fourth modules 441 to 444 and include pins P2 and P3, pins P4 and P5, And the pin P6 and the pin P7 are short-circuited and the pin P1 and the pin P8 are connected to a power source (not shown), thereby constituting a series circuit. The pin P9 is for securing the creepage distance and is not electrically connected to the power supply board 33. [ The pins P10 and P11 are terminals for the LED element 445 for security light and are connected to a power source.
The LED elements 42 of the first module 441 are connected to the pins P1 and P2. And the LED elements 42 of the second module 442 are connected to the pins P3 and P4. And the LED elements 42 of the third module 443 are connected to the pins P5 and P6. And the LED elements 42 of the fourth module 444 are connected to the pins P7 and P8. And the pins P10 and P11 are connected to the LED element 445 for security light of the fourth module 444. [ The pin (P9) is not connected to the module in order to secure the creepage distance.
As described above, the LED elements 42 of the first to third modules 441 to 443 and the fourth module 444 are connected in series by connecting the respective modules to the connector 321. Since the LED elements 42 are connected in series, if a single module fails in a broken wire, no current flows to all the modules, and thus an overcurrent protection circuit that is required in the case of parallel connection is unnecessary. Therefore, by connecting the modules 441 to 444 in series, the configuration of the circuit becomes simpler than that of parallel connection, which leads to downsizing and cost reduction of the power supply circuit portion 32. Further, in the case of series connection, the forward voltage (VF) is higher than that in the case of parallel connection, so that the conversion efficiency is good.
The connection order of the four modules (the first to third modules 441 to 443 and the LED elements 42 of the fourth module 444) is arbitrary. That is, even if the combination of the respective modules and the terminals (pins P1 to P8) of the connector 321 is changed, the lighting state does not change. Therefore, at the time of assembling work, the operator does not need to be conscious of the combination of the wiring of the module and the connection of the terminal of the connector 321. As a result, the assembling operation time can be shortened and the working efficiency is good. Also, the possibility of erroneous connection is lost. Since each module is connected to the power supply circuit unit 32, a common module can be used at least except for security lamps, thereby facilitating parts management.
12 is an example. The power supply circuit portion 32 may be configured so as to be electrically connected to the LED light source modules 44 individually and to supply power by connecting the LED light source modules 44 in series. 12 is a diagram showing a state in which each of the wiring lines from the first to fourth modules 441 to 444 is electrically connected to the connector 321 as shown in Fig. 12, for example, " electrically connected to each LED light source module 44 individually " 50 (a connector provided at the end of the wiring 50) are connected. Alternatively, the wirings 50 may be directly connected to the power supply board 33 by soldering or the like without using the connector 321.
&Quot; Each LED light source module 44 is connected in series " is a form in which the terminals of the connector 321 are connected in series, for example, as shown in FIG. In addition, they may be connected in series in the power supply circuit portion 32, or they may be connected in series other than the connector 321 portion. For example, the wiring on the power supply board 33 may be arranged so as to be connected in series at a position away from the connector 321 on the power supply board 33. [
Although four modules 441 to 444 are used in Fig. 12, the number of modules is not limited, and a plurality of light emitting modules may be used.
In the above embodiment, the LED light source modules 44 are connected in series. However, the LED light source modules 44 may be connected in series. The light emitting element is not particularly limited as long as it can be a light source, and may be a light emitting element or a light emitting module including a light emitting element.
