A lighting device 11 according to an embodiment of the present invention will be described with reference to Figs. 1 to 5. Fig. The lighting apparatus 11 according to the present embodiment is a lighting apparatus using a plurality of LED elements 42 as a light source. As shown in Fig. 1, the lighting device 11 is a sealing light adhered to a device mounting surface (not shown) such as a ceiling. In the following description, the side irradiated with the light of the lighting device 11 is referred to as the irradiation side of the lighting device 11, and the side opposite to the side of the lighting device 11 such as the ceiling is referred to as a lighting device 11 (the ceiling side in the attached state). The vertical direction of the lighting apparatus 11 will be described as a vertical direction (vertical direction in Figs. 1 and 3) in a state in which the lighting apparatus 11 is installed on a mechanism attachment surface such as a ceiling. And a direction orthogonal to the vertical direction is referred to as a radial direction. In the description of this embodiment, a state in which the lighting apparatus 11 and the like are viewed from below is seen in a plan view. The lighting device 11 and the like are viewed from the side in the vertical direction with respect to the vertical direction. Sectional shape of the lighting device 11 and the like is shown in a sectional view.
The lighting apparatus 11 mainly includes a main body 21, a power source 31, a light source 41, a lamp shade 51, a power cover 61, a connecting portion 71, a light receiving portion 81, ). The lighting device 11 has a circular shape in 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 when viewed in a plan view. The instrument body 21 holds the light source unit 41, the lamp shade 51, the power source cover 61, the protection member 91, and the like. The instrument body 21 has a light source attachment portion 22, a concave portion 25, a projecting portion 26, and a receiving portion 23, and is integrally formed as a single member.
In the present embodiment, the light source attachment portion 22, the concave portion 25, the projecting portion 26, and the accommodation portion 23 are integrally formed as the instrument main body 21, no.
The light source attachment portion 22 is an annular ring when viewed from the top, and is composed of a plurality of (four in this embodiment) flat surface attachment surface portions 22a. The concave portion 25 is disposed between the plurality of light source attachment surface portions 22a. The accommodating portion 23 is provided at the center of the instrument body 21 in the radial direction. The light source attachment portion 22 is provided on the outside of the receiving portion 23 in the radial direction. The protruding portion 26 is provided outside the light source attachment portion 22 in the radial direction. A plurality of holding portions 29 for holding the lamp shade 51 are provided on the periphery of the instrument body 21. The plurality of holding portions 29 are arranged at substantially equal intervals on the periphery of the instrument body 21. The instrument body 21 has a durability to maintain the power supply cover 61 in which the power supply unit 31 is housed, the light source unit 41 and the lamp shade 51, and a thermal conductivity for dissipating the heat generated by the light source unit 41 It 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 and can be formed of other alloying materials and other materials such as resin as long as the material has high durability and heat radiation.
The light source attachment portion 22 is a portion to which the light source portion 41 is attached. The light source attachment portion 22 is provided with a predetermined width along the circumferential direction of the instrument main body 21 and has a plurality of projections 22 in a substantially circular arc around the outer circumferential side of the accommodating portion 23 in the radial center portion of the instrument body 21 Respectively. The light source attachment portion 22 has a light source attachment surface portion 22a and a light source fixing portion 22b. The light source attachment surface portion 22a is a circular arc flat surface having a predetermined width in the circumferential direction and the radial direction, and is a surface to which the LED light source module 44 is attached by being abutted. As shown in Fig. 3, the light source attachment surface portion 22a is a projecting surface protruding toward the irradiation surface side. The light source fixing portion 22b is a screw hole for screwing a screw member provided in the vicinity of four corners in the vicinity of the outer periphery of the light source attachment surface portion 22a in order to fix the light source portion 41 using a screw member. The light source fixing portion 22b is formed by, for example, a burring process, so that the length of the threaded portion with the screw member can be secured to be long. A receiving portion 23 protrudes toward the irradiation surface side in the radial center portion of the instrument body 21 and the light source attachment portion 22 is provided in a region radially outwardly surrounding the receiving portion 23 . Further, the light source attachment portion 22 is formed in a region radially inward of the outer peripheral edge of the instrument body 21. The light source attaching portion 22 also functions as a heat dissipating portion for transferring the heat generated in the light source portion 41 to the outside so that the light source attaching face portion 22a to which the light source portion 41 is attached has a contact area with the light source portion 41 And is formed flat so as to be widened.
The concave portion 25 is a portion extending radially from the outer peripheral side of the accommodating portion 23 in the instrument body 21. The concave portion 25 is disposed between the plurality of light source attachment portions 22. That is, the concave portion 25 and the light source attachment portion 22 are arranged alternately around the outer peripheral side of the accommodating portion 23 in the implement main body 21. The concave portion 25 is formed so as to protrude toward the attachment surface side. The length of the concave portion 25 in the radial direction is substantially the same as the width of the light source attachment portion 22 adjacent to the concave portion 25 in the radial direction. The concave portion 25 has a gradient along the radial direction, and the cross-sectional shape is formed into a substantially trapezoidal convex shape. For this reason, the concave portion 25 functions as a reinforcing rib for reinforcing the instrument body 21. It is also possible to improve the rigidity of the instrument main body 21 by providing a plurality of (four in this embodiment) radially extending recesses 25 from the outer peripheral side of the accommodating portion 23 of the instrument body 21 . That is, the instrument body 21 is formed with a bent portion by the concave portion 25. The curved shape has higher flexural rigidity than the flat shape. Therefore, the rigidity of the instrument body 21 can be increased by forming a plurality of bending portions in the radial direction of the instrument body 21 and in the circumferential direction.
In this embodiment, the concave portion 25 is projected toward the attachment surface side, but is not particularly limited. The concave portion 25 may be a curved shape having a function as a reinforcing rib for improving the rigidity of the instrument body 21 and may be formed so as to project the concave portion 25 toward the irradiation surface side, for example. The cross-sectional shape of the concave portion 25 may be formed into a substantially rectangular convex shape, a circular arc shape, a concave-convex shape or the like. The length of the concave portion 25 in the radial direction is not limited to the same dimension as the radial width of the light source attachment portion 22 but may be longer than the width of the light source attachment portion 22 in the radial direction, 21 can be further increased. Even if the length of the concave portion 25 in the radial direction is smaller than the width of the light source attachment portion 22 in the radial direction, a plurality of the concave portions 25 in the radial direction can provide the same effect as that of the present embodiment. In addition, the instrument body 21 has a large surface area by providing the recess 25, so that heat dissipation can be made higher than that of the instrument body without the recess 25 provided.
The protruding portion 26 is a portion adjacent to the radially outer side of the light source attachment portion 22 and protruding toward the irradiation surface side. The protrusions 26 are intermittently arranged along the outer circumferential side of the light source section 41. The protrusions 26 are formed in a plurality of circular arc shapes which are formed in an intermittent state along the circumferential direction. That is, in the instrument body 21, a region where the protruding portion 26 is not formed is provided between the light source portion 41 and the holding portion 29. One end of the protective member 91 is attached to the lower end of the projecting portion 26 using a screw member. The projecting portion 26 has a function as a reinforcing rib for reinforcing the instrument body 21, and is formed into a substantially trapezoidal convex cross-sectional shape. Thus, the rigidity in the circumferential direction of the instrument body 21 can be improved.
The accommodating portion 23 is a portion where one end of the connecting portion 71 is accommodated. The connecting portion 71 connects the lighting device 11 with a wiring mechanism disposed on the surface of the apparatus such as a ceiling. The accommodating portion 23 is provided at the center of the instrument body 21 in the radial direction. The receiving portion 23 has a circular shape in plan view and a concave shape downward when viewed in cross section, and is formed so as to protrude to the irradiation surface side. The accommodating portion 23 has a substantially cylindrical peripheral wall portion 23a and an annular bottom portion 23b provided continuously to the peripheral wall portion 23a. A circular opening 23c is formed in the center of the bottom 23b of the accommodating portion 23 in the radial direction. The opening 23c is a portion for exposing the connection portion 71. [ A light receiving hole 23d for exposing one end of the light receiving portion 81 is formed in the bottom portion 23b of the receiving portion 23 at a position corresponding to the light receiving portion 81. [ A through hole (not shown) for inserting a wiring (not shown) for electrically connecting the LED light source module 44 and the power supply unit 31 to the light receiving hole 23d is formed in the peripheral wall 23a of the receiving portion 23, (23e, 23e) are formed. The through holes 23e and 23e are formed between the light receiving unit 81 and the LED light source module 44. [ The LED light source module 44 and the power source unit 31 are configured such that the receiving portion 23 is substantially cylindrical with the bottom protruding toward the irradiation surface side and the through holes 23e and 23e are provided on the peripheral wall 23a, It is difficult to impart stress due to bending to the wiring for electrically connecting. That is, the wiring connected to the LED light source module 44 is inserted into the through hole 23e, 23e and drawn into the receiving portion 23 on the attachment surface side of the instrument body 21. [ At this time, when the through holes 23e and 23e are provided so as to open toward the vertical direction of the instrument body 21, the direction in which the through holes 23e and 23e are opened and the direction in which the wires extend do not coincide with each other. Therefore, in order to draw the wiring from the irradiation surface side of the instrument body 21 to the attachment surface side, it is necessary to forcibly bend the wiring in the vertical direction near the through holes 23e and 23e. In the present embodiment, the through holes 23e and 23e are formed in the peripheral wall 23a of the receiving portion 23 so as to open toward the lateral direction of the instrument body 21, The opening direction coincides with the extending direction of the wiring. Therefore, the wiring can be drawn from the irradiation surface side of the instrument body 21 to the attachment surface side without forcibly bending in the vertical direction near the through holes 23e, 23e, and it is difficult to give stress due to bending. The receiving portion 23 is adjacent to the light source attaching portion 22 to which the light source portion 41 is attached and when the dimension (height dimension) in the vertical direction of the receiving portion 23 becomes large, The shade of the receiving portion 23 is exposed to the lamp shade 51. [ Therefore, in the present embodiment, by accommodating only a part of the power supply section 31 or the connection section 71 in the accommodating section 23, the capacity of the accommodating section 23 can be reduced and the accommodating section 23 can be formed Thereby making it difficult to block the light from the light source unit 41. [
The power supply section 31 is a power supply circuit for supplying power to the LED element 42 of the light source section 41 and lighting the LED element 42. The power supply unit 31 is a power supply circuit in which a plurality of electronic components are mounted on a power supply board 33 that is a printed circuit board processed into a substantially circular arc shape having a predetermined width. The power supply unit 31 converts the alternating current supplied from the external commercial power supply into a predetermined direct current and supplies the converted current to the plurality of LED elements 42 mounted on the board 43. [ The power supply unit 31 is housed in the power supply cover 61 and attached to the top plate portion 64 of the power supply cover 61 through a plurality of (six in this embodiment) spacers 40. As a result, a space is formed between the power supply cover 61 and the power supply unit 31 to secure an electrical insulation distance. The power supply unit 31 is provided with a connector 32. The connector 32 is connected to a connector (not shown) on the side of the wiring mechanism when the lighting apparatus 11 is attached to the surface of the mechanism such as a ceiling or the like so that the power source unit 31 is connected to the ceiling wiring mechanism And is electrically connected to an external commercial power supply. The power supply unit 31 and the light source unit 41 are electrically connected by wiring (not shown).
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 is disposed on the outer peripheral side of the power source unit 31. The light source unit 41 has a flat plate shape having a plurality of LED elements 42 and disposed on a light source attachment surface portion 22a which is a flat surface of the light source attachment portion 22. [ 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 concentrically around the opening 23c of the instrument body 21 at substantially equal intervals. As shown in Fig. 2, the light source unit 41 and the power source unit 31 are disposed at positions that do not overlap with each other when viewed in a plan view.
As shown in Fig. 5, the substrate 43 of the LED light source module 44 is formed in a circular arc shape having a predetermined width when seen in plan view. The substrate 43 has end portions 43a which are parallel to each other at both opposite end portions in the circumferential direction (see Fig. 5). Further, the end portion 43a is an example of the parallel end portion of the present invention. Since the substrates 43 of the LED light source module 44 are all formed in the same shape and have the same area, the fabrication is facilitated. The shape of the inner peripheral edge of the substrate 43 is the same as or similar to the shape of the peripheral edge of the substrate 43. [ Accordingly, when a plurality of substrates 43 are cut out from one plate-like substrate material, it is possible to arrange the substrates 43 on the substrate material so that the number of parts to be discarded is reduced, , desirable. The substrate 43 also has a non-parallel end portion 43b formed along the radial direction at both opposite end portions in the circumferential direction. Each of the LED light source modules 44 is connected by using the wiring parts 45 which electrically connect the LED light source modules 44 to each other while opposing the non-parallel end portions 43b in the circumferential direction. The LED light source module 44 can form the light source portion 41 having a substantially annular shape by connecting the non-parallel end portions 43b in opposition to each other. The wiring component 45 is disposed at a position corresponding to the recess 25 (in this embodiment, the lower position of the recess 25). Each of the LED light source modules 44 is arranged so as to surround the outer side in the radial direction of the accommodating portion 23. Each LED light source module 44 is attached to the light source attachment portion 22 with four screw members 49. The LED light source module 44 is electrically connected to the power source section 31 by an electric wire (not shown). The back surface of the mount surface of the substrate 43 is fixed by abutting against the light source attachment surface portion 22a of each light source attachment portion 22. Therefore, when each LED light source module 44 generates heat , The heat of the LED light source module (44) is transmitted to the appliance body (21). The heat transferred to the instrument body 21 is conducted to the air around the instrument body 21 when the ambient temperature is lower than the temperature of the instrument body 21. [ Heat transmitted to the instrument body 21 is radiated to the attachment surface side of the instrument body 21 through each light source attachment surface portion 22a.
Further, each of the LED light source modules 44 may be attached to the light source attaching portion 22 through a thermally conductive sheet (not shown) or a heat dissipating grease, whereby higher heat dissipation can be obtained.
In the present embodiment, surface-mounted LED elements are used as the light sources. However, the light sources are not limited to LED elements, and COB type light emitting modules, organic EL elements (OLEDs), and the like can also be realized.
The plurality of LED elements 42 are arranged at least on the irradiation surface side of the light source attachment surface portion 22a of the light source attachment portion 22 of the light source portion 41. [ This is because the LED element 42 mounted on the substrate 43 serves as a heat source so that at least the LED element 42 is disposed in the region of the light source attachment surface portion 22a to improve heat radiation efficiency. For example, the size and shape of the LED light source module 44 viewed from the plane and the size and shape of the LED light source module 44 when viewed from the plane of the light source attachment surface portion 22a need not be the same. That is, the heat dissipation effect can be obtained by disposing the LED element 42, which generates heat, in the region of the light source attachment surface portion 22a through the substrate 43. [ The portion where the LED 42 is not mounted on the substrate 43 such as the outer peripheral edge of the substrate 43 may be disposed away from the region of the light source attachment surface portion 22a. For example, in the present embodiment, both end portions in the circumferential direction of each LED light source module 44 are disposed so as to be located below the concave portion 25, away from the region of the light source attachment surface portion 22a.
The lamp shade 51 is a member which is attached so as to cover the irradiation surface side of the instrument body 21 and distributes the light from the light source portion 41 to the outside while reflecting and diffusing the light. The lamp shade 51 is made of a resin material having translucency. The overall shape of the lamp shade 51 is circular in plan view and swells gently in a dome shape on the lower surface side. The lamp shade 51 is detachable from the instrument body 21 for cleaning the interior of the lamp shade 51 and for replacing the parts of the instrument body 21. A notched portion (not shown) for attaching the lamp shade 51 to the holding portion 29 of the instrument main body 21 is formed at the opening edge portion on the upper surface side of the lamp shade 51. The shape of the lamp shade 51 in the present embodiment is an example, and may be a dome shape, a cylindrical shape, a square tube shape, or the like.
The instrument body 21 is provided with a holding portion 29 which is an attaching tool for holding the to-be-held portion of the lamp shade 51. [ When the lamp shade 51 is disposed at the attaching position of the instrument body 21 and is rotated in one of the circumferential directions of the lamp shade 51, And the lamp shade 51 is attached to the instrument body 21 by being held by the lamp body 29. When the lamp shade 51 is rotated to the other side in the circumferential direction in a state where the lamp shade 51 is attached to the instrument body 21, the portion to be held by the lamp shade 51 is separated from the holding portion 29 of the instrument body 21 The lamp shade 51 can be detached from the instrument body 21.
The power cover 61 is a member that covers the power source unit 31. The power supply cover 61 is a flat cylindrical member whose one end is opened and is a member to which the power supply unit 31 and the connection unit 71 are attached. The power supply cover 61 is attached to the attachment surface side of the accommodating portion 23 of the instrument body 21. In addition, a connection portion 71 for attaching an adapter is attached to the inside of the power cover 61. The power supply cover 61 has an attachment hole 62, a peripheral edge portion 63, a top plate portion 64, a peripheral wall portion 65, and a flange portion 66.
The attachment hole 62 is a circular opening portion for inserting a wiring component (not shown) such as a ceiling hook adapter when the lighting device 11 is attached to the ceiling. The attachment hole 62 is provided at a position that is the center of the power cover 61 in the radial direction.
The peripheral edge portion 63 is a peripheral portion of the attaching hole 62 and is a portion to which one end (upper end) of the wiring component connecting portion 72 of the connecting portion 71 is attached using a screw member. The peripheral edge portion 63 is an annular surface protruding downward. The peripheral edge portion 63 is provided with a screw hole for attaching the wiring component connecting portion 72 using a screw member.
The top plate portion 64 is a flat portion formed in an annular shape around the peripheral edge portion 63. [ In the top plate portion 64, a power source portion 31 is disposed through a spacer 40 in an area having an area of approximately half as viewed in a plan view. The circumferential wall portion 65 is a cylindrical portion extending downward from the outer periphery of the top plate portion 64. The flange portion 66 is an annular portion protruding radially outward from the outer periphery of the lower end of the circumferential wall 65. The flange portion 66 is a portion abutting against the instrument body 21 when the power supply cover 61 is attached to the instrument body 21. The flange portion 66 is formed with a plurality of screw holes and is attached to the instrument body 21 using a screw member.
The power supply cover 61 is configured such that the lower end side of the connecting portion 71 is accommodated in the accommodating portion 23 and the flange portion 66 is fitted in the accommodating portion 23 in the state where the power supply portion 31 and the connecting portion 71 are attached, (21). The power cover 61 is attached to the attachment surface side of the accommodating portion 23 so that a substantially circumferential space is formed by the power source cover 61 and the accommodating portion 23 and a power supply portion 31 and a connection portion 71, and the light receiving portion 81, and the like.
The connecting portion 71 is a portion to which the adapter and the light receiving portion 81 are attached. The connecting portion 71 has an adapter connecting portion 72 and a light receiving portion connecting portion 73. The connecting portion 71 is attached to the peripheral edge portion 63 of the power source cover 61 using a screw member.
The wiring mechanism connection portion 72 has a first cylindrical portion 72a having a smaller diameter than the opening portion 23c of the receiving portion 23 and a second cylindrical portion 72b having a larger outer diameter than the opening portion 23c ). The second cylindrical portion 72b is formed with an insertion hole 72c for inserting a connector 32 extended from the power supply unit 31. The insertion hole 72c is formed in the second cylindrical portion 72b. The light receiving portion connecting portion 73 is a portion provided on the side of the wiring mechanism connecting portion 72 and attaching the light receiving portion 81. The light receiving portion connecting portion 73 is disposed at a position corresponding to the light receiving hole 23d of the receiving portion 23. When attaching the lighting device 11 to the ceiling, a wiring component such as a hooking and sealing adapter is attached to a ceiling wiring mechanism (a base for hanging the ceiling) for a lighting device, and the attachment hole 62 of the power cover 61 In addition to inserting the wiring component, the wiring component is fitted into the first cylindrical portion 72a.
The light receiving unit 81 is a unit that receives a wireless signal (infrared light in this embodiment) from a remote controller (not shown). The light receiving portion 81 is disposed so as to be exposed from the light receiving hole 23d of the receiving portion 23. The light receiving unit 81 is connected to the power supply unit 31. The light receiving unit 81 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 control signal to the light receiving unit 81 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 protective member 91 is a member disposed between the instrument body 21 and the lamp shade 51 so as to cover the light source unit 41. The protective member 91 is composed of a plurality of protective covers 92. The protective cover 92 is made of a resin sheet material having translucency and having, for example, translucency. The protective cover 92 of this embodiment is transparent. In this embodiment, four protective covers 92 are provided in correspondence with the LED light source modules 44. Each of the protective covers 92 is provided for each of the LED light source modules 44 arranged in the light source attachment section 22. [ Respectively. The shape of the protective cover 92 is a circular arc having a predetermined width and is slightly larger than the shape of each LED light source module 44 so as to cover the LED light source module 44. The protective cover 92 is attached by using a plurality of screw members at the outer periphery of the accommodating portion 23 and at the lower end of the protruding portion 26 in the outer peripheral edge.
In the lighting apparatus 11 according to the present embodiment described above, the power supply unit 31 is accommodated in the power supply cover 61, and the power supply cover 61 is attached to the mounting surface side of the instrument body 21. [ This makes it possible to separate the assembling process of the lighting apparatus and improve the assembling workability. In the lighting apparatus 11 according to the present embodiment, the connecting portion 71 to be connected to the wiring mechanism is attached to the power supply cover 61 and the power supply cover 61 is attached to the mounting surface side of the instrument body 21 . Thus, the assembling workability of the lighting apparatus can be improved. That is, as in the present embodiment, the power supply cover 61, which is a unit to which the power supply unit 31 and the connection unit 71 are attached, and the mechanism body 21, which is a unit to which the light source unit 41 is attached, Therefore, it is possible to separate the assembly process of the lighting apparatus and improve the assembling workability.
In the case where the connecting portion 71 is attached to the instrument main body 21, the connecting portion 71 is often attached to the surface of the instrument main body 21 opposite to the LED light source module 44, It is necessary to perform an attaching operation on both sides of the apparatus, and the work becomes troublesome. The connecting portion 71 is attached to the same surface side as the power source portion 31 of the power source cover 61 and the connecting portion 71 is attached to the instrument main body 21 The connecting portion 71 is not attached. Therefore, the attaching operation of the connecting portion 71, the LED light source module 44, and the power source portion 31 can be performed only on one side of each of the instrument body 21 and the power source cover 61, .
In the lighting device 11, the power source unit 31 is attached to the power source cover 61 via the spacer 40, and has a space between the power source cover 61 and the power source unit 31. [ This makes it possible to secure an electrical insulation distance (for example, a creepage distance) between the power source unit 31 (power source substrate 33) and the power source cover 61. Further, since the power source board 33 is directly attached to the power source cover 61 using the spacer 40, no other attachment member is required, and the attachment can be easily performed.
In the lighting device 11, the light source unit 41 and the power source unit 31 are disposed at positions that do not overlap with each other as viewed in a plan view, as shown in Fig. Accordingly, the heat generated by the light source unit 41 and the power source unit 31 do not propagate to each other, and are hardly affected by heat.
The lighting device 11 has a plurality of projections 26 on the outer peripheral side of the light source unit 41 so as to surround the periphery of the light source unit 41, And has a job holding section 29. And has a portion that does not have the projecting portion 26 between the light source portion 41 and the holding portion 29. The protrusions 26 are intermittently provided to easily remove worms, dust, and the like that enter the intermittent portion of the protruding portion 26 even when the protective member 91 is attached. Since the other portions except for the vicinity of the holding portion 29 are surrounded by the protruding portion 26 around the light source portion 41, the structure is difficult for the user to contact the LED light source module 44. With this structure, safety can be improved.
In the lighting apparatus 11, the light source section 41 has a substrate 43 which is an arc-shaped module substrate, and a linear end 43a having both ends in the circumferential direction of the substrate 43 substantially parallel Have. Thus, when a plurality of substrates 43 are cut out from one plate-shaped substrate material, the molds of the substrates 43 can be arranged so as to stand on the substrate material, It is possible to cut the substrate 43 with a small number of parts to be discarded, so that the manufacturing yield can be improved, so that the manufacturing cost can be reduced.
In the lighting device 11, the accommodating portion 23 has a through hole 23e for inserting a wiring for electrically connecting the light receiving portion 81 and the LED light source module 44, and the through hole 23e Receiving portion 81 and the LED light source module 44. The light- By forming the through hole 23e for drawing out the wiring in the vicinity of the light receiving hole 23d of the accommodating portion 23 as described above, the position of the through hole 23e can be easily recognized in view of the plane, Do.
The plurality of LED light source modules 44 in the lighting device 11 have an arc-shaped substrate 43 and a non-parallel end 43b along the radial direction at the circumferential end of the substrate 43 ). The non-parallel end portions 43b of the plurality of LED light source modules 44 are opposed to each other so that the adjacent substrate 43 is connected by using the wiring component 45 and the wiring component 45 is connected to the concave portion 25 And are disposed at corresponding positions. Even when the non-parallel end 43b of each LED light source module 44 is disposed in a close state, an appropriate insulation distance can be set. The configuration in which each of the LED light source modules 44 is formed in a shape having a substantially parallel end 43a and a non-parallel end 43b along the radial direction at the circumferential end of the substrate 43, 43 are smaller than those of the LED light source modules 44 adjacent to each other in the circumferential direction at the end nearest to the radial direction. Therefore, even when the substrate 43 thermally expands due to heat generated by the LED elements 42, the shape of the substrate 43 as in the present embodiment can be reduced by reducing the amount of contact between the substrates 43, The stress associated with the wiring part 45 due to the thermal expansion of the substrate 43 can be reduced.
The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications are possible. For example, although the lighting apparatus 11 is annular, it may be a square or other shape. It may also be applied to a pendant light other than a sealing light. In the case of the pendant light, the connection portion corresponds to, for example, a wiring cable or the like. Further, in the case of a pendant light connectable to a duct rail disposed on the ceiling surface, the connection portion corresponds to, for example, a wiring duct plug and a wiring cable connected thereto. Therefore, the connection portion in the present invention can be interpreted in a broad sense depending on the type and form of the lighting apparatus.
The shape of the instrument body 21 of this embodiment 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 light source section 41.
