JP6681960B2 - Power supply unit for lighting and lighting device - Google Patents

Description

  The present invention relates to a power supply unit for lighting and a lighting device.

  2. Description of the Related Art There is a downlight type illuminating device which is used by being embedded in a ceiling and which uses an LED as a light source (for example, refer to Patent Document 1).

  Some bulb-type lighting devices that are used by being attached to equipment also use LEDs as light sources (see, for example, Patent Document 2).

JP 2012-74134 A JP, 2011-108590, A JP, 2014-154230, A JP, 2010-86973, A

  In the conventional downlight type illumination device, the heat sink member is formed integrally with the body portion or as a part of the body portion from an aluminum alloy or the like. Therefore, when the specifications of the heat sink member are changed according to the application of the lighting device, the specifications of the main body must be changed, which makes it difficult to meet various needs.

  On the other hand, in the conventional light bulb type illumination device, the cooling fin portion is attached to the outer peripheral surface of the cylindrical main body. Therefore, it is possible to change only the specifications of the cooling fin portion according to the application of the lighting device without changing the specifications of the tubular main body. However, in the conventional light bulb type illuminating device, the supporting member is caulked to the outer peripheral portion at one end of the tubular body, and the LED module is fixed to this supporting member via the support base. Therefore, in the process in which the heat generated in the LED is transferred from the support base to the support member, the tubular body, and the cooling fin portion, the amount of heat transfer is reduced by the thermal resistance generated at the crimp-fastened portions of the tubular body and the support member. There is a problem.

  Further, in both conventional downlight type and light bulb type lighting devices, a power supply board for lighting an LED is directly housed in a main body or a tubular main body. Therefore, it is necessary to secure an extra space in the main body or the tubular main body so that the power supply board can be installed and the wiring work can be performed, which makes it difficult to downsize the lighting device.

  An object of the present invention is to improve heat dissipation of a lighting device.

A power supply unit for lighting according to one aspect of the present invention,
A power supply unit for lighting, which supplies lighting power to a light source unit in which a light source circuit including a light emitting element is arranged,
A power board on which the lighting circuit is placed,
A housing for housing the power supply board,
A heat sink formed in a tubular shape so as to house the housing inside,
The light source unit is provided so as to close one end of the heat sink, and the bottom wall portion is connectable from the outside.

  In the present invention, the light source unit may be physically connected to the bottom wall portion so that heat can be transferred from the light source unit to the bottom wall portion and the heat sink. Therefore, the heat dissipation of the lighting device can be improved.

3 is a perspective view of the lighting device according to Embodiment 1. FIG. FIG. 3 is an exploded perspective view of the lighting device according to the first embodiment. FIG. 3 is an exploded perspective view of the lighting device according to the first embodiment. FIG. 3 is a diagram showing an installation example of the lighting device according to Embodiment 1. FIG. 3 is a perspective view of the housing of the power supply unit of the lighting device according to the first embodiment. FIG. 3 is a perspective view of the housing of the power supply unit of the lighting device according to the first embodiment. FIG. 3 is a side view of the housing and the heat sink of the power supply unit of the lighting device according to the first embodiment. FIG. 3 is a cross-sectional view of the housing and the heat sink of the power supply unit of the lighting device according to the first embodiment. The figure which shows the connection part of the housing and heat sink of the power supply unit of the illuminating device which concerns on Embodiment 1. FIG. 3 is a perspective view of a housing of the power supply unit of the lighting device according to the first embodiment, and an output wire and an input wire. FIG. 3 is a perspective view of the housing of the power supply unit of the lighting device according to the first embodiment. FIG. 3 is a perspective view of the housing of the power supply unit of the lighting device according to the first embodiment. FIG. 3 is a perspective view of the housing of the power supply unit of the lighting device according to the first embodiment. FIG. 3 is a diagram showing alignment of a housing and a housing of a power supply unit of the lighting device according to Embodiment 1, a plate-shaped member of a light source unit, an insulating sheet, and a light source substrate. FIG. 3 is a perspective view of the plate-shaped members of the power supply unit and the light source unit of the lighting device according to the first embodiment. FIG. 3 is a perspective view of a reflector of the light source unit of the lighting device according to the first embodiment. 3 is a perspective view of a power supply unit and a light source unit of the lighting device according to Embodiment 1. FIG. FIG. 4 is a diagram showing a procedure for attaching a frame to the light source unit of the lighting device according to the first embodiment. FIG. 4 is a diagram showing a procedure for attaching a frame to the light source unit of the lighting device according to the first embodiment. FIG. 6 is a perspective view of a lid and a terminal block of a power supply unit of the lighting device according to the second embodiment. FIG. 6 is a partial plan view of a power supply unit of the lighting device according to the second embodiment. FIG. 7 is a perspective view of a lid and a terminal block of a power supply unit of the lighting device according to the third embodiment. FIG. 6 is a partial plan view of a power supply unit of the lighting device according to the third embodiment. The side view of the illuminating device which concerns on Embodiment 4. FIG. 7 is a perspective view of a heat sink of a power supply unit of the lighting device according to the fourth embodiment. FIG. 7 is a perspective view of a heat sink of a power supply unit of the lighting device according to the fourth embodiment. The side view of the housing and heat sink of the power supply unit of the illuminating device concerning Embodiment 4. Sectional drawing of the housing and heat sink of the power supply unit of the illuminating device which concerns on Embodiment 4. FIG. FIG. 16 is a perspective view of a housing and a heat sink of a power supply unit of the lighting device according to the fifth embodiment. FIG. 10 is a perspective view of a housing and a heat sink of a power supply unit of the lighting device according to the sixth embodiment. FIG. 16 is a perspective view of a heat sink of a power supply unit of the lighting device according to the sixth embodiment. FIG. 14 is a perspective view of a housing and a heat sink of a power supply unit of the lighting device according to the seventh embodiment. FIG. 16 is a perspective view of a fin of a heat sink of the power supply unit of the lighting device according to the seventh embodiment. FIG. 16 is a perspective view of a lighting device according to Embodiment 8. FIG. 16 is a diagram showing an installation example of a lighting device according to Embodiment 8. FIG. 16 is a perspective view of a lighting device according to a ninth embodiment. FIG. 16 is a perspective view of a lighting device according to a ninth embodiment. FIG. 16 is a perspective view of a lid and a terminal block of a power supply unit of the lighting device according to the tenth embodiment. The top view of the power supply unit of the illuminating device which concerns on Embodiment 10. FIG. 27 is a partial perspective view of the housing of the power supply unit of the lighting device according to the eleventh embodiment and the output and input wires. FIG. 27 is a partial perspective view of a housing of a power supply unit of a lighting device according to a modification of the eleventh embodiment, and an output wire and an input wire. FIG. 27 is a partial perspective view of a housing of a power supply unit of a lighting device according to a modification of the eleventh embodiment, and an output wire and an input wire. FIG. 16 is a partial perspective view of a housing of a power supply unit of an illumination device according to a twelfth embodiment, and an output wire and an input wire. FIG. 16 is a partially exploded perspective view of a housing of a power supply unit of a lighting device according to a twelfth embodiment. FIG. 28 is a perspective view of a bridge portion of a housing of a power supply unit of a lighting device according to a modification of the twelfth embodiment. FIG. 25 is a partial perspective view of a housing of a power supply unit of an illumination device according to a thirteenth embodiment, and an output wire and an input wire. FIG. 25 is a partially exploded perspective view of a housing of a power supply unit of a lighting device according to a thirteenth embodiment. FIG. 25 is a partial perspective view of a housing of a power supply unit of an illumination device according to a fourteenth embodiment, and an output wire and an input wire. FIG. 26 is a partially exploded perspective view of a housing of a power supply unit of a lighting device according to a fourteenth embodiment. FIG. 28 is a perspective view of a housing of a power supply unit of an illumination device according to a fifteenth embodiment, and an output wire and an input wire. FIG. 25 is a perspective view of a housing of a power supply unit of the lighting device according to the fifteenth embodiment. FIG. 25 is a perspective view of a housing of a power supply unit of the lighting device according to the fifteenth embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. In the description of the embodiments, the description of the same or corresponding parts will be appropriately omitted or simplified. Further, in the description of the embodiments, the arrangement and orientation such as “top”, “bottom”, “left”, “right”, “front”, “rear”, “front”, “back”, etc. are for convenience of description. However, the above description is not intended to limit the arrangement and orientation of devices, instruments, parts and the like. With respect to the configuration of the device, the tool, the component, and the like, the material, shape, size, and the like can be appropriately changed within the scope of the present invention.

Embodiment 1.
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order.

*** Composition explanation ***
A configuration of a lighting device 100, which is a device according to the present embodiment, will be described with reference to FIGS. 1, 2, and 3.

  The lighting device 100 includes a light source unit 200 and a lighting power supply unit 300 that supplies lighting power to the light source unit 200.

  The light source unit 200 includes a light source substrate 210, a plate member 220, an insulating sheet 230, a reflection plate 240, and a diffusion plate 250.

  A light emitting element 211, which is an LED, is mounted on the light source substrate 210. That is, a light source circuit including the light emitting element 211 is arranged on the light source substrate 210. The number of the light emitting elements 211 may be any number, but is 26 in this embodiment. The light emitting element 211 may be a solid-state light emitting element other than the LED such as an organic EL or a laser. Further, the light emitting element 211 does not have to be mounted on the light source substrate 210, as long as the light source circuit including the light emitting element 211 is arranged in the light source unit 200.

  The plate member 220 has two plate surfaces 221 and 222, which are a front surface and a back surface, respectively. The light source substrate 210 is fixed to the one plate surface 221. That is, the light source circuit including the light emitting element 211 is arranged on the one plate surface 221. The other plate surface 222 is connected to the power supply unit 300.

  In the present embodiment, the insulating sheet 230, the light source substrate 210, the reflecting plate 240, and the diffusing plate 250 are sequentially stacked and attached to one plate surface 221 of the plate member 220. The plate member 220, the insulating sheet 230, the reflection plate 240, and the diffusion plate 250 are provided with screw holes at corresponding positions. The screw sequentially penetrates the screw holes of the diffusion plate 250, the reflection plate 240, and the insulating sheet 230, is inserted into the screw holes of the plate-shaped member 220, and is tightened, so that the insulation sheet 230, the reflection plate 240, and the diffusion plate. 250 is fixed to the plate member 220. The light source substrate 210 is fixed by being sandwiched between the insulating sheet 230 and the reflection plate 240. The light source substrate 210 may also be provided with a screw hole. In that case, screws are sequentially inserted through the screw holes of the diffusion plate 250, the reflection plate 240, the light source substrate 210, and the insulating sheet 230, and are inserted into the screw holes of the plate member 220.

  The plate member 220 is made of a heat conductive material. In the present embodiment, the plate member 220 is integrally formed of a metal material.

  The insulating sheet 230 is sandwiched between the plate member 220 and the light source substrate 210 to electrically insulate the light source substrate 210 from the plate member 220.

  The reflector 240 is provided with a circular opening 241 for exposing the light emitting element 211. The reflector 240 reflects the light from the light emitting element 211 on the inner peripheral surface of the opening 241.

  The diffusion plate 250 is made of a translucent material. The diffusion plate 250 diffuses and transmits the light directly emitted from the light emitting element 211 and the light reflected by the reflection plate 240.

  The power supply unit 300 includes a power supply substrate 310, an output electric wire 320, a housing 330, a lid 340, a terminal block 350, an input electric wire 360, a housing 370, and a cylindrical heat sink 390.

  A lighting circuit 311 is arranged on the power supply substrate 310.

  The output electric wire 320 serves as an output path of lighting power from the lighting circuit 311 to the light source circuit including the light emitting element 211 by electrically connecting the power supply substrate 310 and the light source substrate 210. That is, the output wire 320 serves as an output path of lighting power from the lighting circuit 311 to the light source circuit by electrically connecting the lighting circuit 311 arranged on the power supply substrate 310 and the light source circuit arranged on the light source substrate 210. .

  The housing 330 has a cylindrical peripheral wall portion 331 and a bottom wall portion 332. The bottom wall portion 332 is integrally formed with the peripheral wall portion 331. The bottom wall portion 332 closes one end of the peripheral wall portion 331. An accommodation space for accommodating the power supply substrate 310 is formed inside the housing 330. The housing 330 is configured so that the light source unit 200 can be attached to the bottom wall portion 332 from the outside. The bottom wall portion 332 is provided with a through hole 333 through which the output electric wire 320 is inserted from the inside of the housing 330 to the outside of the housing 330. In the present embodiment, the light source unit 200 is connected to the bottom wall portion 332 from the outside of the housing 330. Specifically, the other plate surface 222 of the plate member 220 is connected to the bottom wall portion 332.

  Since the housing 330 is configured as described above, heat generated from the light source unit 200 during the lighting of the light emitting element 211 is transferred from the connecting portion between the bottom wall portion 332 and the light source unit 200 via the bottom wall portion 332. It is conducted to the peripheral wall portion 331 to radiate heat. In this embodiment, since the peripheral wall portion 331 and the bottom wall portion 332 are integrally formed, thermal resistance is unlikely to occur between the peripheral wall portion 331 and the bottom wall portion 332. Therefore, the heat generated in the LEDs can be efficiently transferred from the light source unit 200 to the bottom wall portion 332 and the peripheral wall portion 331.

  The lid 340 closes the other end of the peripheral wall portion 331. The lid 340 is made of a heat conductive material. In the present embodiment, lid 340 is integrally formed of a metal material.

  The terminal block 350 is connected to an external power source such as a commercial power source (not shown). The terminal block 350 is fixed to the lid 340 from the outside of the housing 330.

  The input electric wire 360 serves as an input path for lighting power from the external power supply to the lighting circuit 311 by electrically connecting the power supply substrate 310 and the terminal block 350.

  The housing 330 has a flange portion 334 in addition to the peripheral wall portion 331 and the bottom wall portion 332. The flange portion 334 is integrally formed with the peripheral wall portion 331 similarly to the bottom wall portion 332. The flange portion 334 projects perpendicularly to the central axis direction of the peripheral wall portion 331 from the other end of the peripheral wall portion 331. That is, the flange portion 334 projects from the other end of the peripheral wall portion 331 in the radial direction of the peripheral wall portion 331. The peripheral wall portion 331 is provided with a cutout 335 that allows the input electric wire 360 to pass from the outside of the housing 330 to the inside of the housing 330. The lid 340 is connected to the flange 334. In addition, in order to pass the input electric wire 360, a through hole may be provided in the peripheral wall portion 331 instead of the notch 335. The position and the number of the flange portions 334 may be arbitrary positions and numbers, but in the present embodiment, the flange portions 334 are provided at two positions facing each other along the radial direction of the peripheral wall portion 331. Therefore, the number of flange portions 334 is two.

  Since the housing 330 is configured as described above, the heat generated from the light source unit 200 during the lighting of the light emitting element 211 is transferred from the connection portion between the bottom wall portion 332 and the light source unit 200 to the bottom wall portion 332 and the peripheral wall portion. The heat is dissipated by conducting heat to the connection portion between the flange portion 334 and the lid 340 via the 331 and the flange portion 334. In the present embodiment, since peripheral wall portion 331 and flange portion 334 are integrally formed, thermal resistance is unlikely to occur between peripheral wall portion 331 and flange portion 334. Therefore, the heat generated in the LED can be efficiently transferred from the light source unit 200 to the bottom wall portion 332, the peripheral wall portion 331, the flange portion 334, and the lid body 340.

  The housing 330 is formed of a heat conductive material. In the present embodiment, the housing 330 is integrally formed of a metal material. Specifically, the housing 330 is formed into a cup shape by drawing a single metal plate. The housing 330 may be manufactured by a method other than drawing, such as die casting.

  As a modified example of the present embodiment, ventilation holes may be provided in each of the bottom wall portion 332 and the peripheral wall portion 331 or the lid body 340. In that case, a ventilation path that connects one of the ventilation holes to the other is formed inside the housing 330. As a result, convection occurs and the heat dissipation of the housing 330 is improved. The through hole 333 provided in the bottom wall portion 332 may also serve as the ventilation hole. Further, the notch 335 provided in the peripheral wall portion 331 may also serve as the ventilation hole.

  The container 370 is housed inside the housing 330. The container 370 houses the power supply substrate 310. As described above, in the present embodiment, power supply substrate 310 is not directly housed in the housing space formed inside housing 330, but is housed via housing 370. Therefore, it suffices if the housing 330 has a space for installing the container 370, and it is not necessary to secure an extra space.

  The container 370 is made of an insulating material. In the present embodiment, the container 370 is integrally molded of a resin material.

  The heat sink 390 is fixed to the peripheral wall portion 331 from the outside of the housing 330. Therefore, in the present embodiment, it is possible to change only the specifications of heat sink 390 according to the application of lighting device 100 without changing the specifications of housing 330.

  Although the heat sink 390 may be fixed to the peripheral wall portion 331 by press fitting the peripheral wall portion 331, in the present embodiment, it is fixed to the peripheral wall portion 331 by being connected to the peripheral wall portion 331. Specifically, the heat sink 390 is caulked to the peripheral wall portion 331. Therefore, in the housing 330, the heat generated from the light source unit 200 during the lighting of the light emitting element 211 is passed from the connection portion of the bottom wall portion 332 and the light source unit 200 via the bottom wall portion 332 and the circumferential wall portion 331 to the circumferential wall portion 331. And the heat sink 390 are connected to the conductive portion to dissipate heat. In the present embodiment, by increasing the number of connecting points between the peripheral wall portion 331 and the heat sink 390, the heat generated in the LED can be efficiently transmitted from the light source unit 200 to the bottom wall portion 332, the peripheral wall portion 331, and the heat sink 390. it can.

  In the present embodiment, lighting device 100 is a downlight type lighting device that is used by being embedded in a ceiling. Therefore, the lighting device 100 further includes an annular frame 400 and a plurality of leaf springs 500.

  An installation example of the lighting device 100 will be described with reference to FIG. 4. FIG. 4 shows a cross section of the ceiling material 600 and a side surface of the lighting device 100 fitted in a buried hole 601 provided in the ceiling material 600.

  The outer diameter R1 of the frame 400 is larger than the outer diameter R2 of the embedding hole 601.

  A plurality of leaf springs 500 are attached to the frame 400 along the circumferential direction of the frame 400 in order to fix the frame 400 around the embedded hole 601 in the ceiling. The number of leaf springs 500 is three in the present embodiment as shown in FIGS. 2 and 3, but may be two or four or more.

  In the present embodiment, the light source unit 200 and the portion other than the lid 340 of the power supply unit 300 are arranged within the range of the opening diameter of the embedding hole 601 or less, and the axial center is aligned with the opening center. The lighting device 100 can be inserted into the embedding hole 601 without being greatly tilted.

  As a modified example of the present embodiment, the same light source unit as that of the present embodiment is applied to a lighting device of a type different from the downlight type, such as a spotlight type, a flanged light type, a ceiling light type, a bracket light type, and a pendant light type. 200 and the power supply unit 300 may be provided.

  Below, details of the housing 330, the heat sink 390, and the housing 370 of the power supply unit 300 will be described in order.

  Details of the housing 330 will be described with reference to FIGS. 5 and 6.

  The housing 330 has a configuration in which the light emitting element 211 can be arranged, is a heat dissipation path for transmitting the operating heat of the light emitting element 211 to the external space, and also houses the power supply substrate 310 inside to function as a fireproof wall. Compared with the configuration in which the power supply board is housed in the housing provided outside the heat dissipation path, it is possible to achieve a significant reduction in size and weight. Miniaturization and weight reduction contribute to simplification of packaging, improvement of distribution efficiency and workability, that is, improvement of work efficiency. The weight reduction reduces the risk of falling and contributes to the relaxation of the strength of the ceiling material 600, which leads to cost reduction. As a modified example of the present embodiment, when the lighting device installed on the wall is provided with the same light source unit 200 and power supply unit 300 as in the present embodiment, the weight reduction contributes to the relaxation of the strength of the wall material.

  The lid 340 described above also closes the housing 330 and functions as a fireproof wall and a heat radiation path.

  The housing 330 is formed using a plate-shaped noncombustible material. The housing 330 is formed into a bottomed cylinder by press molding using a plate-shaped metal material. The housing 330 has a bottom wall portion 332 and a peripheral wall portion 331 that are integrated with each other, and has uniform thermal resistance, that is, there is no discontinuity in thermal resistance and is excellent in thermal conductivity. That is, the housing 330 has a thermally integrated structure.

  A flange portion 334 that projects outward is integrally formed at the open end of the housing 330. The flange portion 334 is used as a mounting piece for screwing the lid body 340. The casing 330 has the flange portion 334 and the peripheral wall portion 331 integrated with each other, has a uniform thermal resistance, that is, has no discontinuity of the thermal resistance and is excellent in thermal conductivity. That is, the housing 330 has a thermally integrated structure.

  Since the peripheral wall portion 331, the bottom wall portion 332, and the flange portion 334 are integrally formed in the housing 330, the number of parts is small, and the housing 330 has excellent assemblability and robustness.

  In the present embodiment, the outer diameter of the continuous portion 336, which is the portion connecting the peripheral wall portion 331 and the bottom wall portion 332, gradually increases from the bottom wall portion 332 toward the peripheral wall portion 331. That is, in the vertical cross section of the housing 330, the outer peripheral surface of the peripheral wall portion 331 and the outer surface of the bottom wall portion 332 are not connected at right angles but are connected while curving. Therefore, the air flowing near the outer surface of the bottom wall portion 332 easily flows to the outer peripheral surface of the peripheral wall portion 331 along the outer surface of the continuous portion 336, and the heat dissipation of the housing 330 is improved.

  Further, in the present embodiment, the inner diameter of the continuous portion 336 also gradually increases from the bottom wall portion 332 toward the peripheral wall portion 331. That is, in the vertical cross section of the housing 330, the inner peripheral surface of the peripheral wall portion 331 and the inner surface of the bottom wall portion 332 are not connected at right angles but are connected while curving. Therefore, unless the bottom of the container 370 has the same shape as the housing 330, a gap is formed between the container 370 and the peripheral wall portion 331 or between the container 370 and the bottom wall portion 332. To be done. As a result, heat transfer from the housing 330 to the container 370 can be suppressed.

  As described above, the through hole for ventilation may be provided in the lid 340 and the bottom wall portion 332. In that case, air can be made to flow into the gap between the housing 330 and the housing 370 to suppress the temperature rise of the light emitting element 211 and the power supply substrate 310.

  The notch 335 through which the input electric wire 360 is passed can also serve as a ventilation hole instead of the through hole of the lid 340.

  The heat sink 390 will be described in detail with reference to FIGS. 7, 8 and 9. In FIG. 7 and FIG. 8, the flow of air is indicated by arrows.

  A heat sink 390 can be selectively attached to the outer peripheral portion of the housing 330 according to the operating heat generated from the light emitting element 211.

  The heat sink 390 is made of a heat conductive material. The heat sink 390 is a metal plate that extends one round while alternately forming convex ridges 391 that are convex away from the central axis of the heat sink 390 and convex troughs 392 that are closer to the central axis of the heat sink 390 by being bent in a wave shape. Is formed by. That is, the heat sink 390 is formed into a tubular shape by bending a bendable annular plate material in a wave shape. That is, the heat sink 390 is made of a metal plate in which the peaks 391 and the valleys 392 are alternately formed by being bent in a wave shape, and the peaks 391 are located outside (outside) and the valleys 392 are located inside (inside). Make one lap towards each. The number of the mountain portions 391 may be any number, but is 18 in this embodiment.

  The heat sink 390 is fixed to the peripheral wall portion 331 from the outside of the housing 330. Specifically, the valley portion 392 of the heat sink 390 is attached to the outside of the peripheral wall portion 331. A ventilation path is formed between the peripheral wall portion 331 and the mountain portion 391, with both ends of the mountain portion 391 serving as entrances and exits. That is, a ventilation path is formed between the peripheral wall portion 331 and the heat sink 390, in which both ends of the heat sink 390 in the cylinder axis direction are opened. Therefore, the heat dissipation of the housing 330 and the heat sink 390 is improved.

  In this embodiment, the inner ridge of the heat sink 390 is firmly attached to the peripheral wall 331 by crimping. This improves the heat conduction effect and strength. The positions and the number of caulking may be arbitrary positions and numbers, but in the present embodiment, three troughs 392 are selected at equal intervals along the circumferential direction of the heat sink 390, and the troughs 392 of the three troughs 392 are selected. Four pieces of caulking are provided at equal intervals along the central axis direction of the heat sink 390 one by one. Therefore, the total number of crimps connecting the heat sink 390 to the peripheral wall portion 331 is 12.

  The heat sink 390 may be attached to the housing 330 by press-fitting the housing 330 along the inner ridge of the heat sink 390. In that case, the heat sink 390 needs to have a spring property.

  In the cross section including the tube axis of the housing 330, the heat sink 390 has a reduced diameter on the side closer to the lid 340. That is, the heat sink 390 is narrowed.

  In the cross section including the tube axis of the housing 330, the heat sink 390 has a diameter that is increased on the side closer to the bottom wall portion 332.

  In the present embodiment, both ends of the mountain portion 391 are cut out obliquely, so that the length of the mountain portion 391 gradually decreases as the distance from the central axis of the heat sink 390 increases. That is, in the cross section including the tube axis of the housing 330, in the heat sink 390, the upper end that is the end closer to the lid 340 and the lower end that is the end closer to the bottom wall 332 are R-shaped. It is cut out. The notch at the upper end improves the attachability to the ceiling material 600, and the notch at the lower end improves the air intake. Therefore, if at least one of both ends of the mountain portion 391 is obliquely cut out, at least one of the effects can be obtained.

  It is desirable that at least one of both ends of the mountain portion 391 is cut out so that the size at the position where it overlaps with the leaf spring 500 in the circumferential direction of the frame 400 is larger than that at other positions. That is, since it is difficult for air to enter the inlet of the ventilation path formed at either end of the mountain portion 391 located at a position overlapping with the leaf spring 500, it is formed at either end of the mountain portion 391 located at another position. It is desirable that the opening is wider than the entrance of the ventilation path.

  In this embodiment, the opening 393 is provided near the center of the mountain portion 391 in the length direction. The air flowing in and out through the opening 393 further improves the heat dissipation of the housing 330 and the heat sink 390.

  The heat sink 390 may be partially cut out in consideration of the structure required for assembling the lighting device 100 and the structure required for mounting the lighting device 100 on the ceiling.

  In addition to the illustrated shape, the heat sink 390 may have a radially standing shape, a pin shape, a corrugated shape, or the like, and may be manufactured by a molding method other than bending, such as extrusion or drawing. The shape of the peripheral wall portion 331 can be appropriately changed according to the shape of the heat sink 390. That is, the peripheral wall portion 331 is not limited to a cylindrical shape as long as it has a cylindrical shape, and may have another shape.

  The details of the container 370 will be described with reference to FIGS. 10 and 11, 12 and 13, and 14. FIG. 10 shows a wiring example of the output electric wire 320 and the input electric wire 360. FIG. 14 shows a mechanism for aligning the container 370, the housing 330, the plate member 220, the insulating sheet 230, and the light source substrate 210.

  The container 370 is formed in a cylindrical shape with a bottom.

  The container 370 has a first container 371 and a second container 372. The first storage portion 371 stores the power supply substrate 310. The second accommodation portion 372 is separated from the first accommodation portion 371 by the partition wall 373.

  The output electric wire 320 passes through the partition wall 373 from the first housing portion 371 and enters the second housing portion 372, and the through hole 374 and the bottom wall portion 332 provided in the bottom wall of the second housing portion 372 to the second housing portion 372. Through the through hole 333 provided in the housing 370 and the housing 330.

  As described above, in the present embodiment, the space for accommodating the power supply board 310 and the space for accommodating the output electric wires 320 are separately secured, so that the work of installing and wiring the power supply board 310 can be performed efficiently. You can do it.

  The container 370 further includes a hollow pillar portion 375. The column portion 375 protrudes from a portion of the bottom wall of the second accommodation portion 372 where the through hole is provided, and fits into the through hole 333 provided in the bottom wall portion 332.

  The output electric wire 320 passes through the through hole 374 provided in the bottom wall of the second accommodating portion 372, passes through the pillar portion 375, and exits outside the accommodating body 370 and the housing 330.

  A recess 376 through which the output electric wire 320 is passed is provided at one end of the partition wall 373.

  The container 370 further includes a hollow boss portion 377. The boss portion 377 is integrally formed with the bottom wall of the second storage portion 372. A screw hole 378 connected to the inside of the boss portion is provided in the bottom wall of the second accommodating portion 372. An accommodation body 370 is screwed to the bottom wall portion 332 via a screw hole 378 provided in the bottom wall of the second accommodation portion 372.

  The container 370 further includes a bridge portion 379. The bridge portion 379 protrudes from one end of the peripheral wall of the first accommodating portion 371 and fits into the cutout 335 provided in the peripheral wall portion 331. When a through hole is provided in the peripheral wall portion 331 instead of the cutout 335, the bridge portion 379 fits into the through hole.

  The input electric wire 360 enters the first accommodation portion 371 from the outside of the accommodation body 370 and the casing 330 through the groove 380 provided in the bridge portion 379. That is, the input electric wire 360 enters the inside of the housing 330 from the outside of the housing 330 through the notch 335 provided in the peripheral wall portion 331. It should be noted that instead of the groove 380, a hole may be provided in the bridge portion 379 for passing the input electric wire 360.

  In the present embodiment, the outer peripheral surface 381 of the container 370 extends obliquely with respect to the central axis direction of the peripheral wall portion 331 to form a gap between the container 370 and the peripheral wall portion 331. As a result, heat transfer from the housing 330 to the container 370 can be suppressed.

  The angle formed by the outer peripheral surface 381 of the container 370 and the central axis of the peripheral wall portion 331 is preferably 0.1 degrees or more.

  It should be noted that regardless of whether or not the outer peripheral surface 381 of the container 370 extends obliquely with respect to the central axis direction of the peripheral wall portion 331, the inner peripheral surface of the peripheral wall portion 331 with respect to the central axial direction of the peripheral wall portion 331. A gap may be formed between the container 370 and the peripheral wall portion 331 by adopting a configuration that extends obliquely.

  Although not shown, in the present embodiment, the light source unit 200 is connected to the bottom wall portion 332 from the outside of the housing 330 by caulking or screws. A portion of the caulking or screw projecting inside the housing 330 pushes up the bottom surface of the housing 370, so that a gap is also formed between the housing 370 and the bottom wall portion 332. As a result, heat transfer from the housing 330 to the container 370 can be suppressed.

  The first housing portion 371 is provided with a partition wall 382 for partitioning the internal space along the tube axis direction of the housing body 370. The partition wall 382 is connected to the bottom wall and the peripheral wall of the first accommodating portion 371, similarly to the partition wall 373.

  A first storage chamber 383 is formed between the partition wall 373 and the partition wall 382 to store the power supply substrate 310.

  The first storage chamber 383 is filled with a curable filling material made of a resin material in a necessary amount to fix the power supply substrate 310 in the first storage chamber 383 and to transfer the operating heat of the power supply substrate 310 to the outside of the container 370. It serves as a heat dissipation path to dissipate. The filling material is filled so as not to cover the aluminum electrolytic capacitor which is a component of the lighting circuit 311 arranged on the power supply substrate 310.

  The bottom wall of the first storage chamber 383 is formed with a raised portion 384 that is raised toward the opening side. The raised portion 384 has the effect of reducing the amount of the filling material used together with the partition wall 373 and the partition wall 382 which form the first storage chamber 383.

  Since the partition wall 373 forming the first storage chamber 383 and the partition wall 382 are not formed with openings, there is no possibility that the filling material leaks from the first storage chamber 383. That is, there is no possibility that the filling material leaks from the container 370.

  A substrate insertion guide 385 is formed on the peripheral wall of the first storage chamber 383 along the tube axis direction of the storage body 370.

  A second accommodation portion 372 is formed on the side of the partition wall 373 opposite to the first accommodation chamber 383.

  A pair of output electric wires 320 is arranged in the second accommodating portion 372.

  Two openings are formed in the bottom wall of the second storage portion 372.

  One opening is a screw hole 378 for screwing the container 370 to the housing 330. The screw hole 378 is connected to the inside of the boss portion 377 which is erected from the bottom wall of the second housing portion 372 along the tube axis direction of the housing body 370, and is connected to the outside of the housing body 370 and the second housing portion 372. Are in communication.

  The other opening is a through hole 374 through which the output electric wire 320 for supplying lighting power from the power supply substrate 310 to the light emitting element 211 is inserted. The through hole 374 is connected from the bottom wall of the second accommodating portion 372 to the column portion 375 that is erected outside the accommodating body 370 along the tube axis direction of the accommodating body 370. The column portion 375 also has a function as a positioning structure for aligning the positions of the container 370, the housing 330, the plate member 220, the insulating sheet 230, and the light source substrate 210 in the tube axis direction of the container 370.

  A concave portion 386 for guiding the output electric wire 320 drawn out from the through hole 374 to the connector 212 of the light source substrate 210 is formed at a tip end portion of the column portion 375 standing upright on the outside of the housing 370.

  At the end of the partition wall 373 at the boundary between the first storage chamber 383 and the second storage portion 372, a recess 376 is formed to pass the output electric wire 320 from the power supply substrate 310 to the second storage portion 372.

  A second storage chamber 387 is formed on the side of the partition wall 382 opposite to the first storage chamber 383. That is, the second storage chamber 387 is formed on the opposite side of the second storage portion 372 with the first storage chamber 383 interposed therebetween. Although not shown, the second storage chamber 387 appropriately stores a control board on which a control circuit for controlling the output of the lighting power is arranged.

  Like the partition wall 382, no opening is formed in the peripheral wall and the bottom wall of the second storage chamber 387. Therefore, similarly to the first storage chamber 383, the second storage chamber 387 may be filled with a necessary amount of a curable filling material made of a resin material.

  Like the peripheral wall of the first storage chamber 383, a substrate insertion guide 388 is formed on the peripheral wall of the second storage chamber 387 along the tube axis direction of the storage body 370.

  A bridge portion 379 having a concave section toward the outside is formed on the peripheral wall of the second storage chamber 387. The bridge portion 379 allows the pair of input electric wires 360 to pass from the outside of the container 370 to the second storage chamber 387. The input electric wire 360 straddles the peripheral wall portion 331 of the housing 330 made of a metal material, but the presence of the bridge portion 379 causes the input electric wire 360 to touch the sharp edge of the housing 330 to be broken or grounded. Can be prevented.

  A notch 335, which is a recess into which the bridge 379 can be fitted, is formed at the open end of the peripheral wall 331 of the housing 330. The bridge portion 379 also has a function as a positioning structure for fitting the positions of the housing 330 and the housing 370 in the tube axis direction of the housing 370 to each other by fitting with the notch 335 of the housing 330. .

  At the end of the partition wall 382 at the boundary between the first storage chamber 383 and the second storage chamber 387, an input electric wire 360 and a control signal line (not shown) from the bridge portion 379 and the control board to the first storage chamber 383. Is formed with a recess 389 through which

  As described above, the gap is provided between the housing 330 and the container 370. It has effects such as heat insulation, air convection, and absorption of heat contraction of the container 370. In the present embodiment, the gap is formed by the draft taper required when forming the container 370, but the gap may be provided by a method other than this.

  Hereinafter, details of the plate-shaped member 220 and the reflection plate 240 of the light source unit 200 will be sequentially described.

  Details of the plate-shaped member 220 will be described with reference to FIG. 15. FIG. 15 shows a state in which only the plate member 220 is attached to the power supply unit 300.

  A plate member 220 is appropriately attached to the outside of the bottom wall portion 332 of the housing 330 according to the specifications of the lighting device 100. In consideration of thermal conductivity, the plate member 220 is firmly attached to the bottom wall portion 332 by using a method such as screwing or caulking. Regarding the positions of screwing and caulking, (1) if priority is given to heat conduction from the light source substrate 210 to the plate-shaped member 220, select a position that does not overlap the light emitting element 211, and (2) the plate-shaped member 220 to the bottom wall. When heat conduction to the portion 332 is prioritized, a position overlapping the light emitting element 211 is selected.

  That is, (1) when the heat conduction from the light source substrate 210 to the plate-shaped member 220 is prioritized, the connection portion between the bottom wall portion 332 and the plate-shaped member 220 is connected to the light emitting element 211 in the central axis direction of the peripheral wall portion 331. It is desirable that the positions do not overlap each other. (2) When the heat conduction from the light source unit 200 to the bottom wall portion 332 is prioritized, the connecting point between the bottom wall portion 332 and the light source unit 200 is the central axis of the peripheral wall portion 331. It is desirable that the light emitting element 211 and the light emitting element 211 overlap each other in the direction.

  The details of the reflector 240 will be described with reference to FIGS. 16 and 17, and FIGS. 18 and 19. In FIG. 17, the light source unit 200 is attached to the power supply unit 300. That is, FIG. 17 shows a state in which the plate-shaped member 220 is attached to the power supply unit 300 and then the insulating sheet 230, the light source substrate 210, the reflection plate 240, and the diffusion plate 250 are further attached. 18 and 19 show a procedure of attaching the frame 400 to the reflector 240 by a hook 244 and a latch 245, which will be described later, respectively.

  The reflector 240 is attached to the plate member 220 by being screwed. A light source substrate 210 on which the light emitting element 211 is mounted and an insulating sheet 230 for maintaining insulation of the light source substrate 210 are sandwiched between the plate member 220 and the reflection plate 240.

  The reflection plate 240 has an annular plate shape, and the front side is finished with a shape and color tone that easily reflect light, and the back side is radially formed with ribs 242 for maintaining strength. The rib 242 located in the wiring path of the output electric wire 320 extending to the connector 212 of the light source substrate 210 through the recess 386 of the column portion 375 of the housing 370 is notched in a concave shape. Further, an inner peripheral wall 243 rising from the peripheral edge of the circular opening 241 is formed on the back side of the reflector 240. Accordingly, the output electric wire 320 that is pulled out from the pillar portion 375 and connected to the connector 212 can be wired on the back side of the reflection plate 240 so as not to interfere with the emission of light from the light emitting element 211. The number of ribs 242 may be any number, but in the present embodiment, it is 11 and six ribs 242 are cut out.

  An attachment mechanism for attaching the frame 400 is formed on the outer periphery of the reflection plate 240. The attachment mechanism consists of a set of hooks 244 and a latch 245. The attachment mechanism maintains the stress-free state with the frame 400 attached.

*** Explanation of effects ***
In the present embodiment, the peripheral wall portion 331 and the bottom wall portion 332 of the housing 330 of the power supply unit 300 are integrally molded. Therefore, by applying the power supply unit 300 to the lighting device 100, the heat dissipation of the lighting device 100 is improved.

  In this embodiment, the heat sink 390 of the power supply unit 300 is separate from the housing 330. Therefore, it is possible to change only the specifications of the heat sink 390 according to the application of the lighting device 100 without changing the specifications of the housing 330, and it is possible to meet various needs.

  In the present embodiment, the housing 370 housed inside the housing 330 of the power supply unit 300 separately secures a space for housing the power supply substrate 310 and a space for housing the output electric wire 320. Therefore, by applying the power supply unit 300 to the lighting device 100, the lighting device 100 can be downsized.

  In the present embodiment, a ventilation path is formed between the peripheral wall portion 331 of the housing 330 of the power supply unit 300 and the mountain portion 391 of the heat sink 390 with both ends of the mountain portion 391 serving as entrances and exits. Therefore, the heat dissipation of the housing 330 and the heat sink 390 is improved.

Embodiment 2.
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order. Mainly, differences from the first embodiment will be described.

*** Composition explanation ***
In the present embodiment, the configuration of lid 340 of power supply unit 300 is different from the configuration of lid 340 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The configuration of the lid 340 will be described with reference to FIGS. 20 and 21.

  In the present embodiment, lid 340 has disc portion 341 and fixing portion 342. The bottom wall portion 332 of the housing 330 closes one end of the peripheral wall portion 331 of the housing 330, while the disc portion 341 closes the other end of the peripheral wall portion 331. The fixed portion 342 is integrally formed with the disc portion 341. The terminal block 350 is fixed to the fixing portion 342. Notches 344 are provided on both sides of the continuous portion 343, which is a portion where the disc portion 341 and the fixed portion 342 are connected to each other. That is, in this embodiment, both sides of the continuous portion 343 are cut out.

  The lid 340 further has a flange portion 345. The flange portion 345 is integrally formed with the disc portion 341 in the same manner as the fixing portion 342. The flange portion 345 projects perpendicularly to the central axis direction of the disc portion 341 from the outer peripheral portion of the disc portion 341. That is, the flange portion 345 projects from the outer peripheral portion of the disc portion 341 in the radial direction of the disc portion 341. The flange portion 345 is connected to the flange portion 334 of the housing 330.

*** Explanation of effects ***
A ventilation path is formed between the peripheral wall portion 331 of the housing 330 and the crest portion 391 of the heat sink 390, with both ends of the crest portion 391 serving as an entrance and exit. Because of the presence of air, it becomes difficult for air to escape. In this embodiment, the portion that closes the peripheral wall portion 331 of the lid 340 is the disc portion 341, and both sides of the portion that connects the disc portion 341 and the fixing portion 342 are notched, so that FIG. As shown in FIG. 5, the lid 340 exists near the outlet only in a small number of ventilation paths as compared with the first embodiment. Therefore, the heat dissipation of the housing 330 and the heat sink 390 is improved. In addition to the promotion of ventilation, the present embodiment has the effect of reducing the weight of the lighting device 100.

Embodiment 3.
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order. Mainly, differences from the first embodiment will be described.

*** Composition explanation ***
In the present embodiment, the configuration of lid 340 of power supply unit 300 is different from the configuration of lid 340 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The configuration of the lid 340 will be described with reference to FIGS. 22 and 23.

  In this embodiment, the lid 340 is provided with a vent hole 346. The bottom wall portion 332 of the housing 330 closes one end of the peripheral wall portion 331 of the housing 330, whereas a part of the lid 340 closes the other end of the peripheral wall portion 331. Five vent holes 346 are arranged in a circular arc shape at a portion where the portion that closes the other end of the peripheral wall portion 331 and the portion to which the terminal block 350 is fixed are connected. Each vent hole 346 is arranged at a location corresponding to the mountain portion 391 of the heat sink 390. The position and the number of the vent holes 346 can be appropriately changed according to the position and the number of the mountain portions 391 of the heat sink 390.

  The lid 340 further has a flange portion 345. The flange portion 345 vertically projects outward from the outer peripheral portion of the portion that closes the other end of the peripheral wall portion 331. The flange portion 345 is connected to the flange portion 334 of the housing 330.

*** Explanation of effects ***
A ventilation path is formed between the peripheral wall portion 331 of the housing 330 and the crest portion 391 of the heat sink 390, with both ends of the crest portion 391 serving as an entrance and exit. Because of the presence of air, it becomes difficult for air to escape. In the present embodiment, since the ventilation hole 346 is provided in the portion that closes the peripheral wall portion 331 of the lid 340, it is easy for air to escape from the ventilation path having the outlet at the position corresponding to the ventilation hole 346. Therefore, the heat dissipation of the housing 330 and the heat sink 390 is improved. In addition to the promotion of ventilation, the present embodiment has the effect of reducing the weight of the lighting device 100.

Fourth Embodiment
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order. Mainly, differences from the first embodiment will be described.

*** Composition explanation ***
With reference to FIG. 24, the configuration of illumination device 100, which is the device according to the present embodiment, will be described.

  In the present embodiment, the configuration of heat sink 390 is different from the configuration of heat sink 390 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The details of the heat sink 390 will be described with reference to FIGS. 25, 26, 27 and 28. 27 and 28, the flow of air is indicated by arrows.

  In the first embodiment, as shown in FIGS. 7 and 8, the opening 393 is provided near the center in the length direction of the mountain portion 391 of the heat sink 390. However, in the present embodiment, the opening 393 is provided. I can't. Therefore, the heat dissipation area is increased and the heat dissipation efficiency is improved.

  A ventilation path is formed between the peripheral wall portion 331 of the housing 330 and the mountain portion 391 of the heat sink 390, as in the first embodiment, with both ends of the mountain portion 391 serving as entrances and exits. Then, since there is no opening 393, air does not enter or exit in the middle of the ventilation path. Therefore, turbulent air flow does not occur between the housing 330 and the heat sink 390, and the air can be moved more smoothly, so that the heat dissipation efficiency is improved.

  The heat sink 390 is formed by press working as in the first embodiment.

*** Explanation of effects ***
In the present embodiment, particularly when the installation environment of lighting device 100 is an environment in which a large amount of air flow is unlikely to occur, the heat dissipation of lighting device 100 is higher than in the first embodiment.

  In the first embodiment, since the opening 393 is provided in the mountain portion 391 of the heat sink 390 that is the outer shell of the lighting device 100, the peripheral surface of the opening 393 is subjected to R surface processing, C surface processing, or the like by secondary processing or the like. It is desirable to apply edge processing. Further, in the first embodiment, burrs may remain on the peripheral edge of the opening 393, so deburring is desirable. On the other hand, in the present embodiment, it is not necessary to perform such secondary processing. For this reason, there is no risk of scattering processing chips in the manufacturing environment and the installation environment of the lighting apparatus 100, and it is possible to eliminate a factor that deteriorates the insulation performance of the manufacturing environment and the installation environment of the lighting apparatus 100.

Embodiment 5.
Differences between the present embodiment and the first embodiment will be mainly described.

  In the present embodiment, the configuration of heat sink 390 is different from the configuration of heat sink 390 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The configuration of the heat sink 390 will be described with reference to FIG.

  In the present embodiment, heat sink 390 is of a corrugated type. The heat sink 390 is formed in a tubular shape by bending a long metal plate so as to alternately form the peaks 391 and the valleys 392 and fastening both ends in the longitudinal direction. The heat sink 390 is press-fitted into the housing 330, and the valley portion 392 is pressed against the peripheral wall portion 331 of the housing 330. The valley 392 may be partially caulked to the peripheral wall 331, or the valley 392 may be partially welded to the peripheral wall 331.

Sixth Embodiment
Differences between the present embodiment and the first embodiment will be mainly described.

  In the present embodiment, the configuration of heat sink 390 is different from the configuration of heat sink 390 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The configuration of the heat sink 390 will be described with reference to FIGS. 30 and 31.

  In this embodiment, the heat sink 390 is of a press type, that is, a drawing type. The heat sink 390 is formed into a tubular shape by press molding. Like the housing 330, the heat sink 390 has a bottom wall at one end in the cylinder axis direction and an opening at the other end. The heat sink 390 is press-fitted into the housing 330, and the valley portion 392 is pressed against the peripheral wall portion 331 of the housing 330. The valley 392 may be partially caulked to the peripheral wall 331, or the valley 392 may be partially welded to the peripheral wall 331.

Embodiment 7.
Differences between the present embodiment and the first embodiment will be mainly described.

  In the present embodiment, the configuration of heat sink 390 is different from the configuration of heat sink 390 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The configuration of the heat sink 390 will be described with reference to FIGS. 32 and 33.

  In this embodiment, the heat sink 390 is of a direct mounting type. The heat sink 390 includes a plurality of fins 394. Each fin 394 is directly attached to the peripheral wall portion 331 of the housing 330 by using a method such as caulking or welding. According to the present embodiment, the position and number of fins to be attached can be flexibly changed according to the product specifications.

  In the present embodiment, each fin 394 is crimped at a plurality of locations. Specifically, each fin 394 is crimped at three places, which are the small circle portions of the chain line in the figure.

  In the present embodiment, each fin 394 has a flat plate shape with an L-shaped cross section, but may have a flat plate shape with a Z-shaped cross section, a flat plate with an M-shaped cross section, or any other shape.

Eighth embodiment.
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order. Mainly, differences from the first embodiment will be described.

*** Composition explanation ***
With reference to FIG. 34 and FIG. 35, the configuration of the illumination device 100 that is the device according to the present embodiment will be described.

  In the present embodiment, power supply unit 300 does not have heat sink 390. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

*** Explanation of effects ***
In this embodiment, by omitting the heat sink 390, the weight and cost of the lighting device 100 can be reduced.

Ninth Embodiment
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order.

*** Composition explanation ***
With reference to FIG. 36 and FIG. 37, the configuration of the illumination device 100 that is the device according to the present embodiment will be described.

  In the present embodiment, the configuration of lighting device 100 is the same as the configuration of lighting device 100 according to the first embodiment.

  The power supply unit 300 includes a pair of connecting tools 701 and a fixing tool 702.

  Each connecting tool 701 connects the lid 340 to the housing 330. In the present embodiment, each connector 701 is a screw.

  The fixture 702 fixes the terminal block 350 to the lid 340. In this embodiment, the fixture 702 is a screw.

  The details of the lid 340 will be described below.

  The lid 340 has an elongated shape. The lid 340 has a closing portion 711 and a fixing portion 342. The bottom wall portion 332 of the housing 330 closes one end of the peripheral wall portion 331 of the housing 330, while the closing portion 711 closes the other end of the peripheral wall portion 331. The terminal block 350 is fixed to the fixing portion 342. The closing part 711 and the fixing part 342 are arranged in the direction of the central axis L1 of the lid 340, that is, along the longitudinal direction of the lid 340. In the present embodiment, the fixing portion 342 is integrally formed with the closing portion 711. The blocking portion 711 is formed in a rectangular plate shape at a portion connected to the fixing portion 342, and is formed in a semicircular plate shape at a portion away from the fixing portion 342.

  In the closing part 711, the pair of connecting tools 701 are opposed to each other on a straight line at an angle θ with respect to the central axis L1 of the lid 340, that is, along a direction oblique to the longitudinal direction of the lid 340. The lid 340 is connected to the housing 330 at the opposing position. The angle θ may be any angle larger than 0 degree and smaller than 180 degrees, but is 45 degrees in the present embodiment. That is, in the present embodiment, the pair of connecting tools 701 connects the lid body 340 to the housing 330 at a position facing each other in the closing portion 711 along the direction of 45 degrees with respect to the longitudinal direction of the lid body 340. To do.

  The lid 340 further has a flange portion 345. The flange portion 345 is integrally formed with the closing portion 711, similarly to the fixing portion 342. The flange portion 345 projects from the outer peripheral portion of the semicircular plate-shaped portion of the closing portion 711 to the outside of the closing portion 711. One of the pair of connecting tools 701 is screwed into a screw hole provided in one flange portion 334 of the housing 330 through a screw hole provided in the flange portion 345. The other connecting tool 701 is provided at a position facing the screw hole of the flange portion 345 on a straight line at an angle θ with respect to the central axis L1 of the lid 340 in the rectangular plate-shaped portion of the closing portion 711. It is screwed into a screw hole provided in the other flange portion 334 of the housing 330 via the screw hole. As a result, the lid 340 is screwed to the flange portion 334 of the housing 330.

  A step 720 is provided on the upper surface, which is one surface of the lid 340. Specifically, a step 720 having a U-shape in plan view is provided on one end side of the lid 340 in the longitudinal direction. The lid 340 closes the other end of the peripheral wall portion 331 at a portion corresponding to the high step 721 on the upper surface on the lower surface that is the surface opposite to the one surface. The terminal block 350 is fixed to a portion of the lower surface of the lid 340, at least a portion of which corresponds to the lower step 722 of the upper surface. Specifically, in the lid 340, the terminal block 350 is fixed to a part of the lower surface corresponding to a step 722 having a lower upper surface and the remaining part corresponding to a step 721 having a higher upper surface. That is, in the present embodiment, a part of the high step 721 of the lid 340 corresponds to the closing part 711, and the rest of the high step 721 and the low step 722 of the lid 340 correspond to the fixing part 342.

  The fixture 702 projects from the lower step 722 on the upper surface of the blocking portion 711. The size D1 of the step 720 is preferably equal to or larger than the length of the protruding portion of the fixture 702. The step 720 is formed by deforming a metal plate to be the lid 340 by a method such as drawing.

*** Explanation of effects ***
In the present embodiment, the lid 340 is fixed to the flange portion 334 using the connector 701 that is two screws, but the screwing position is for downsizing the power supply unit 300 and the lighting device 100. In addition, it is decided to satisfy the following requirements.
-Screwing is performed at a position that does not hinder the installation of the lighting device 100 on the ceiling or the like.
The screwing is performed at a position that does not interfere with the wiring of the input electric wire 360 that electrically connects the terminal block 350 and the power supply board 310. Specifically, the screwing is performed at a position where it does not interfere with the end of the input electric wire 360.
-Screwing is performed at a position where the stress on the lid 340 can be maximally supported.
-Screwing is performed at a position where the stress at the time of wiring can be supported to the terminal block 350 to the maximum.

  In the present embodiment, screw holes are provided at two axially symmetric positions in directions of approximately 45 degrees with respect to the longitudinal direction, which is the direction along which the terminal block 350 of the lid 340 extends. The lid 340 is fixed to the flange portion 334 by screwing the connecting tool 701 into the screw hole. Therefore, the above conditions can be satisfied in a well-balanced manner. The angles with respect to the longitudinal direction may be different from each other. Further, the positions of screwing are not limited to two, and may be one or three or more. The number of flange portions 334 of the housing 330 is appropriately changed according to the number of screwed portions.

  According to the present embodiment, the wiring of input electric wire 360 is not obstructed when assembling lighting device 100. Further, when the lighting device 100 is attached, a stress applied to the lid 340 by an operator holding the lid 340 or a stress applied to the lid 340 by the wiring work can be absorbed to the maximum extent.

  In this embodiment, the portion of the lid 340 to which the terminal block 350 is attached is offset to the light source side. Therefore, it is possible to prevent the height of the lighting device 100 from increasing due to the fixture 702 protruding upward. That is, according to the present embodiment, the height of lighting device 100 can be kept low, and lighting device 100 can be adapted to a small installation environment in the height direction. Also in the second and third embodiments, the same effect can be obtained because the portion of the lid 340 to which the terminal block 350 is attached is offset to the light source side. Even if the entire portion of the lid 340 to which the terminal block 350 is attached is not offset to the light source side, the same effect can be obtained as long as at least the portion of the lid 340 where the fixture 702 is arranged is offset to the light source side. Is obtained.

  In this embodiment, the step 720 is formed by partially squeezing the metal plate that will be the lid 340. Therefore, the strength of the lid portion 340 against bending is increased. Also in the second and third embodiments, the same effect can be obtained because the metal plate serving as the lid 340 is partially squeezed.

Embodiment 10.
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order. Differences from the first and ninth embodiments will be mainly described.

*** Composition explanation ***
In the present embodiment, the configuration of lid 340 of power supply unit 300 is different from the configuration of lid 340 of power supply unit 300 in the first and ninth embodiments. Other configurations of the power supply unit 300 are the same as the configurations of the power supply unit 300 in the first and ninth embodiments. The configuration of the lighting device 100 other than the power supply unit 300 is the same as the configuration of the lighting device 100 according to the first and ninth embodiments.

  The configuration of the lid 340 will be described with reference to FIGS. 38 and 39.

  Similar to the first and ninth embodiments, the flange portion 345 projects from the outer peripheral portion of the semicircular plate-shaped portion of the closing portion 711 to the outside of the closing portion 711. One of the pair of connectors 701 is screwed into a screw hole provided in one flange portion 334 of the housing 330 via a screw hole 703 provided in the flange portion 345. The other connecting member 701 is located at a position facing the screw hole 703 of the flange portion 345 on a straight line at an angle θ with respect to the central axis L1 of the lid 340 in the rectangular plate-shaped portion of the closing portion 711. It is screwed into a screw hole provided in the other flange portion 334 of the housing 330 via the screw hole 703 provided. As a result, the lid 340 is screwed to the flange portion 334 of the housing 330.

  In this embodiment, a step 720 that is linear in a plan view is provided from one end to the other end of the lid 340 in the lateral direction. The lid 340 closes the other end of the peripheral wall portion 331 at a portion of the lower surface corresponding to the high step 721 on the upper surface. The terminal block 350 is fixed to a portion of the lower surface of the lid 340, at least a portion of which corresponds to the lower step 722 of the upper surface. Specifically, in the lid 340, the terminal block 350 is fixed to a portion of the lower surface corresponding to the lower step 722 entirely on the upper surface. That is, in this embodiment, the high step 721 of the lid 340 corresponds to the closing portion 711, and the low step 722 of the lid 340 corresponds to the fixing portion 342.

  As in the first and ninth embodiments, the fixture 702 projects from the lower step 722 on the upper surface of the closing portion 711. The size D1 of the step 720 is preferably equal to or larger than the length of the protruding portion of the fixture 702. The step 720 is formed by deforming a metal plate to be the lid 340 by a method such as pressing.

*** Explanation of effects ***
In the present embodiment, stable molding can be performed at high speed by a simple press process, instead of partially squeezing the metal plate that will be the lid 340. Therefore, manufacturing quality can be maintained at a high level, and mass production becomes easy. Further, the manufacturing cost and the unit price of parts are reduced.

Embodiment 11 FIG.
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order. Mainly, differences from the first embodiment will be described.

*** Composition explanation ***
In the present embodiment, the configuration of housing 370 of power supply unit 300 is different from the configuration of housing 370 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The configuration of the container 370 will be described with reference to FIG.

  Like the first embodiment, the container 370 has the bridge portion 379. The bridge portion 379 protrudes from one end of the peripheral wall of the first accommodating portion 371 and fits into the notch 335 provided in the peripheral wall portion 331 of the housing 330. The input electric wire 360 enters the first accommodation portion 371 from the outside of the accommodation body 370 and the casing 330 through the groove 380 provided in the bridge portion 379. That is, the input electric wire 360 enters the inside of the housing 330 from the outside of the housing 330 through the notch 335 provided in the peripheral wall portion 331.

  As in the first embodiment, the first housing portion 371 is provided with a partition wall 382 for partitioning the internal space along the tube axis direction of the housing body 370. The partition wall 382 partitions the internal space of the first storage portion 371 to form a first storage chamber 383 far from the bridge portion 379 and a second storage chamber 387 near the bridge portion 379. A recess 389 is formed at one end of the partition wall 382 to allow the input electric wire 360 to pass from the bridge portion 379 over the second storage chamber 387 and the partition wall 382 to the first storage chamber 383.

  As in the first embodiment, the length of the groove 380 provided in the bridge portion 379 is longer than the length of the recess 389 formed at one end of the partition wall 382. On the other hand, the width of the groove 380 provided in the bridge portion 379 is the same as the width of the recess 389 formed at one end of the partition wall 382. The depth of the groove 380 provided in the bridge portion 379 is also the same as the depth of the recess 389 formed at one end of the partition wall 382. The shape of the groove 380 provided in the bridge portion 379 is also the same as the shape of the recess 389 formed at one end of the partition wall 382. In the first embodiment, the shapes of the groove 380 and the concave portion 389 are rectangular groove shapes in which the width dimension is larger than the depth dimension as shown in FIGS. 10 and 11, but in the present embodiment, the shape shown in FIG. It has a V-shaped groove shape as shown in FIG. The shapes of the groove 380 and the concave portion 389 may be other shapes, and specifically, a semicircular groove shape as shown in FIG. 41, and a corner with a depth dimension larger than a width dimension as shown in FIG. It may be a groove shape, an inverted M-shaped groove shape, a W-shaped groove shape, or the like (not shown). When the shapes of the groove 380 and the concave portion 389 are the inverted M-shaped groove shape or the W-shaped groove shape, the wiring paths can be dispersed at the two deepest points. Further, the groove 380 and the concave portion 389 may also serve as a tension stopper for the input electric wire 360, and in that case, the width of the groove 380 and the concave portion 389 is made slightly smaller than the outer diameter including the coating of the input electric wire 360.

  In the bridge portion 379, it is desirable that edge portions such as R surface processing and C surface processing be applied to corner portions through which the input electric wire 360 passes or intersects.

  The depth of the recess 389 formed at one end of the partition wall 382 may be deeper than the depth of the groove 380 provided in the bridge portion 379. In that case, the length of the input electric wire 360 can be shortened.

  Although not shown, the partition wall 382 may be provided with a support portion around which the input electric wire 360 is wound in order to stop the tension of the input electric wire 360.

*** Explanation of effects ***
In the present embodiment, as in the first embodiment, the presence of the bridge portion 379 can prevent the input electric wire 360 from touching the sharp edge of the housing 330 and being broken or grounded.

Twelfth Embodiment
The configuration of the apparatus according to this embodiment and the effects of this embodiment will be described in order. Mainly, differences from the first embodiment will be described.

*** Composition explanation ***
In the present embodiment, the configuration of housing 370 of power supply unit 300 is different from the configuration of housing 370 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The configuration of the container 370 will be described with reference to FIGS. 43 and 44.

  Like the first embodiment, the container 370 has the bridge portion 379. The bridge portion 379 protrudes from one end of the peripheral wall of the first accommodating portion 371 and fits into the notch 335 provided in the peripheral wall portion 331 of the housing 330. The input electric wire 360 enters the first accommodation portion 371 from the outside of the accommodation body 370 and the casing 330 through the groove 380 provided in the bridge portion 379. That is, the input electric wire 360 enters the inside of the housing 330 from the outside of the housing 330 through the notch 335 provided in the peripheral wall portion 331.

  As in the first embodiment, the first housing portion 371 is provided with a partition wall 382 for partitioning the internal space along the tube axis direction of the housing body 370. The partition wall 382 partitions the internal space of the first storage portion 371 to form a first storage chamber 383 far from the bridge portion 379 and a second storage chamber 387 near the bridge portion 379. A recess 389 is formed at one end of the partition wall 382 to allow the input electric wire 360 to pass from the bridge portion 379 over the second storage chamber 387 and the partition wall 382 to the first storage chamber 383.

  In the present embodiment, the bridge portion 379 extends to one end of the partition wall 382 and fits into the recess 389 formed at one end of the partition wall 382.

  The bridge portion 379 is integrated with the first storage portion 371 in the first embodiment, but is a separate body from the first storage portion 371 in the present embodiment. A cutout 801 that allows the bridge portion 379 to pass from the inside of the first housing portion 371 to the outside of the first housing portion 371 is provided at one end of the peripheral wall of the first housing portion 371.

  Thus, in the present embodiment, the bridge portion 379 fits into the recess 389 formed at one end of the partition wall 382 and the notch 801 provided at one end of the peripheral wall of the first accommodating portion 371. It is attached to the first storage portion 371.

  The shape of the groove 380 is not limited to the rectangular groove shape whose width dimension is larger than the depth dimension, but it is V-shaped groove shape, semicircular groove shape, the rectangular groove shape whose depth dimension is larger than the width dimension, and the inverted M shape. Any shape such as a groove shape or a W-shaped groove shape may be used. Further, the groove 380 may also serve as a tension stopper for the input electric wire 360, and in that case, the width of the groove 380 is made slightly smaller than the outer diameter including the coating of the input electric wire 360.

  As shown in FIG. 45, a hole 802 may be provided in the bridge portion 379 instead of the groove 380 to pass the input electric wire 360. That is, the bridge portion 379 may be cylindrical. Specifically, the bridge portion 379 may have a rectangular tube shape or a cylindrical shape.

  A configuration may be adopted in which the partition wall 382 is detachably attached to the first accommodating portion 371. In that case, the bridge portion 379 may be formed integrally with the partition wall 382.

  The bridge portion 379 may be formed integrally with the lid body 340.

*** Explanation of effects ***
In the present embodiment, as in the first embodiment, the presence of the bridge portion 379 can prevent the input electric wire 360 from touching the sharp edge of the housing 330 and being broken or grounded.

  In this embodiment, the bridge portion 379 is a separate member, and the bridge portion 379 is attached so as to straddle the peripheral wall portion 331 of the housing 330, the peripheral wall of the second storage chamber 387, and the partition wall 382. Therefore, the shape of the container 370 can be a simple tubular shape, and the molding die can be simplified. Further, the rigidity of the container 370, that is, the structural strength is increased. Further, since the container 370 has no portion protruding in the direction perpendicular to the tube axis direction, the bridge portion 379 does not get caught on other members during assembly work or the like.

Thirteenth Embodiment
Differences between the present embodiment and the twelfth embodiment will be mainly described.

  In the present embodiment, power supply unit 300 includes electric wire 810 different from input electric wire 360.

  The electric wire 810 serves as an input path of electric power from an external power supply to a control circuit or the like by electrically connecting the control board or the like housed in the second storage chamber 387 and the terminal block 350.

  In the present embodiment, the configuration of container 370 is different from the configuration of container 370 in the twelfth embodiment.

  The configuration of the container 370 will be described with reference to FIGS. 46 and 47.

  In the present embodiment, a recess 803 is provided at one end of the peripheral wall of the first accommodating portion 371 to pass the electric wire 810 from the outside of the accommodating body 370 over the peripheral wall of the first accommodating portion 371 to the second accommodating chamber 387. It is formed in the middle of the notch 801. Specifically, the recess 803 is formed by cutting the central portion of the notch 801 deeper.

  In the present embodiment, since the wiring path of the input electric wire 360 and the wiring path of the other electric wire 810 are partitioned by the presence of the bridge portion 379, the wiring work can be performed smoothly.

Fourteenth Embodiment
Differences between the present embodiment and the twelfth embodiment will be mainly described.

  In the present embodiment, power supply unit 300 includes electric wire 810 different from input electric wire 360.

  The electric wire 810 serves as an input path of electric power from an external power supply to a control circuit or the like by electrically connecting the control board or the like housed in the second storage chamber 387 and the terminal block 350.

  In the present embodiment, the configuration of container 370 is different from the configuration of container 370 in the twelfth embodiment.

  The configuration of the container 370 will be described with reference to FIGS. 48 and 49.

  In this embodiment, the container 370 has a bridge portion 804 which is different from the bridge portion 379. Another bridge portion 804 overlaps with the bridge portion 379 and projects from one end of the peripheral wall of the first accommodating portion 371, and fits into the notch 335 provided in the peripheral wall portion 331 of the housing 330. The bridge portion 379 is a separate body from the first accommodation portion 371, but the other bridge portion 804 is integral with the first accommodation portion 371.

  The electric wire 810 enters the second storage chamber 387 from the outside of the housing 370 and the housing 330 through the groove 805 provided in another bridge portion 804. It should be noted that, instead of the groove 805, a hole may be provided in another bridge portion 804 to pass the electric wire 810.

  In the present embodiment, since the bridge portion 379 and the other bridge portion 804 form the wiring route of the multilayer structure, the wiring work can be smoothly performed.

Fifteenth Embodiment
Differences between the present embodiment and the first embodiment will be mainly described.

  In the present embodiment, the configuration of housing 370 of power supply unit 300 is different from the configuration of housing 370 of power supply unit 300 in the first embodiment. The other configuration of power supply unit 300 is the same as the configuration of power supply unit 300 in the first embodiment. The configuration of lighting device 100 other than power supply unit 300 is the same as the configuration of lighting device 100 according to the first embodiment.

  The configuration of the container 370 will be described with reference to FIGS. 50, 51, and 52.

  In the present embodiment, the through hole 374 provided in the bottom wall of the second storage portion 372 is gradually narrowed from the inside of the second storage portion 372 to the outside of the second storage portion 372. That is, the vertical cross section of the through hole 374 provided in the pillar portion 375 has a tapered weight shape toward the tip of the pillar portion 375. In other words, the cross-section of the through hole 374 has a smaller opening area on the tip end side of the column portion 375 than on the side closer to the second accommodating portion 372. This makes it easier to insert the output wire 320 into the through hole 374.

  It is desirable that the tip end portion of the column portion 375 with which the output electric wire 320 comes into contact is subjected to edge processing such as R surface processing and C surface processing.

  The cross-sectional shape of the through hole 374 provided in the pillar portion 375, that is, the opening shape of the through hole 374 may be a polygon such as a rectangle, or a circle such as a true circle, an ellipse, or an oval. However, other shapes such as a star shape may be used. Similarly, the cross-sectional outer shape of the column portion 375 may be a polygon such as a rectangle, a circle such as a true circle, an ellipse, or an oval, or a star or other shape.

  In the present embodiment, the recesses 386 of the column portion 375 are provided at two locations as in the first embodiment, but the recesses 386 may be provided only at one location, specifically at one side. It may be provided at three or more locations. In particular, when the wiring path of the output electric wire 320 is in one direction, or when the plurality of wiring paths of the output electric wire 320 are close to each other, the recess 386 may be provided at one place.

  The recess 386 may also serve as a tension stopper for the output electric wire 320. In that case, the width of the recess 386 is made slightly smaller than the outer diameter including the coating of the output electric wire 320. Since the concave portion 386 holds the output electric wire 320 between them, even if vibration or impact is applied to the output electric wire 320, the output electric wire 320 is not rubbed against the concave portion 386 and damaged, and the connector 212 of the light source board 210 is provided. It is possible to prevent the connection failure and the like.

  In the present embodiment, as in the first embodiment, the pillar portion 375 is provided only at one place, but the pillar portion 375 has the number and arrangement of the objects to which the output electric wire 320 is electrically connected, specifically, the pillar portion 375. It may be provided at two or more locations depending on the number and arrangement of the connectors 212.

  The column portion 375 may be press-fitted into the through hole 333 of the housing 330. In that case, the container 370 can be fixed so as not to come off from the housing 330, and screwing becomes unnecessary.

  The pillar portion 375 may include a lock mechanism. Specifically, the pillar portion 375 may have a protrusion that is caught on the peripheral portion of the through hole 333 in a state where the pillar portion 375 is inserted into the through hole 333 of the housing 330. In that case also, the container 370 can be fixed so as not to come off from the housing 330, and screwing is unnecessary.

  The pillar portion 375 may be configured as a tubular rivet that is separate from the second accommodating portion 372. In that case, the rivet serving as the pillar portion 375 is press-fitted into the through hole 374 provided in the bottom wall of the second accommodation portion 372 while the output electric wire 320 is being inserted, and is then inserted into the bottom wall of the second accommodation portion 372. Fixed. The rivet forming the pillar portion 375 may also serve as a tension stopper for the output electric wire 320. Further, the rivet that becomes the pillar portion 375 may also have a function of fixing the bottom wall of the container 370 and the bottom wall portion 332 of the housing 330. In that case, the container 370 can be fixed so as not to come off from the housing 330, and screwing becomes unnecessary.

  In the first embodiment, the second accommodating portion 372 is opened in the outer peripheral direction. Therefore, the through hole 374 can be easily viewed from the outside of the container 370, and the output wire 320 can be easily inserted into the through hole 374. On the other hand, in the present embodiment, the second accommodation portion 372 is closed in the outer peripheral direction like the first accommodation portion 371. Therefore, the rigidity of the container 370 is increased, and the structural strength of the lighting device 100 can be increased. Further, the output electric wire 320 can be protected by being separated from the housing 330 that exhibits a heat dissipation function. There is no possibility of the output electric wire 320 being pinched between the housing 370 and the housing 330, and it is possible to prevent the output electric wire 320 from being short-circuited due to the coating of the output electric wire 320 being damaged. Further, the housing 370 is interposed between the output wire 320 and the housing 330, so that the insulation performance is improved. In particular, when the housing 330 is formed of a metal material and receives external noise of high voltage from the outside of the lighting device 100, the external noise propagates to the output wire 320 and damages the light emitting element 211 and the lighting circuit 311. You can prevent giving.

  In addition, in the present embodiment, the inner wall surface 806 of the second accommodating portion 372 is inclined so that the internal space of the second accommodating portion 372 gradually becomes closer to the through hole 374 provided in the bottom wall of the second accommodating portion 372. It is getting narrower. That is, in the second accommodation portion 372, the inner wall surface 806 is inclined toward the through hole 374 in a funnel shape. Therefore, even if the through hole 374 is not visible from the outside of the container 370, the output electric wire 320 can be smoothly inserted into the through hole 374.

  Although the embodiments of the present invention have been described above, some of these embodiments may be implemented in combination. Alternatively, any one or some of these embodiments may be partially implemented. For example, among those described as “units” in the description of these embodiments, only one of them may be adopted, or some arbitrary combination may be adopted. Note that the present invention is not limited to these embodiments, and various modifications can be made as necessary.

A power supply unit for lighting according to an embodiment of the present invention,
A power supply unit for lighting, which supplies lighting power to a light source unit in which a light source circuit including a light emitting element is arranged,
A power board on which the lighting circuit is placed,
A housing for housing the power supply board,
A casing having a tubular peripheral wall portion and a bottom wall portion that closes one end of the peripheral wall portion, the storage body being stored inside, and the light source unit being connectable to the bottom wall portion from the outside,
A lid for closing the other end of the peripheral wall portion,
A terminal block arranged outside the housing in a state of being fixed to the lid,
The container has a bridge portion protruding from the peripheral wall of the container toward the terminal block and fitted into a notch or a through hole provided in the peripheral wall portion.

  The bridge portion is arranged between the power supply board housed in the housing and the terminal block.

The accommodation body has a first accommodation portion and a second accommodation portion separated from the first accommodation portion by a partition wall,
The bridge portion projects from the peripheral wall of the first accommodating portion toward the terminal block.

  The power supply board is housed in the first housing part.

The power supply unit is
An input electric wire that passes through the bridge portion and that serves as an input path for lighting power to the lighting circuit by electrically connecting the power supply board and the terminal block is further provided.

The bridge portion is provided with a groove or a hole from the outside of the housing toward the inside of the container,
The input electric wire enters the inside of the housing through the groove or the hole from the outside of the housing.

The accommodation body is provided with a partition wall that partitions the internal space of the accommodation body to form a first accommodation chamber far from the bridge portion and a second accommodation chamber near the bridge portion,
A recess is formed at one end of the partition wall to allow the input electric wire to pass from the bridge portion to the first storage chamber over the second storage chamber and the partition wall.

The power supply unit is
The electric wire is different from the input electric wire, and further includes an electric wire that enters the second storage chamber from the outside of the housing.

The lighting device according to the embodiment of the present invention is
The power supply unit,
The light source circuit is provided, and the light source unit is connected to the bottom wall portion from the outside of the housing.

  100 illumination device, 200 light source unit, 210 light source substrate, 211 light emitting element, 212 connector, 220 plate member, 221 plate surface, 222 plate surface, 230 insulating sheet, 240 reflection plate, 241 opening, 242 rib, 243 inner peripheral wall 244 hooks, 245 latches, 250 diffuser plates, 300 power supply units, 310 power supply boards, 311 lighting circuits, 320 output wires, 330 housings, 331 peripheral wall parts, 332 bottom wall parts, 333 through holes, 334 flange parts, 335 cut Notch, 336 continuous part, 340 lid, 341 disc part, 342 fixed part, 343 continuous part, 344 cutout, 345 flange part, 346 vent hole, 350 terminal block, 360 input wire, 370 container, 371 first Storage part, 372 Second storage part, 373 Partition wall, 374 Penetration Hole, 375 Column, 376 Recess, 377 Boss, 378 Screw Hole, 379 Bridge, 380 Groove, 381 Peripheral Surface, 382 Partition Wall, 383 First Storage Chamber, 384 Raised Section, 385 Board Insertion Guide, 386 Recess, 387 Second storage chamber, 388 Substrate insertion guide, 389 Concave portion, 390 Heat sink, 391 crest portion, 392 valley portion, 393 opening portion, 394 fin, 400 frame, 500 leaf spring, 600 ceiling material, 601 embedding hole, 701 connector , 702 fixture, 703 screw hole, 711 closed part, 720 step, 721 high step, 722 low step, 801 notch, 802 hole, 803 recess, 804 bridge part, 805 groove, 806 inner wall surface, 810 electric wire.

Claims (8)

A power supply unit for lighting, which supplies lighting power to a light source unit in which a light source circuit including a light emitting element is arranged,
A power board on which the lighting circuit is placed,
An accommodating body having a bottom wall and a cylindrical outer peripheral surface whose one end is closed by the bottom wall, and accommodating the power supply board,
A heat sink that is formed in a tubular shape and that houses the container inside,
A casing that is provided so as to close one end of the heat sink and has a bottom wall portion to which the light source unit is connected from the outside and a cylindrical peripheral wall portion whose one end is closed by the bottom wall portion. Equipped with
The container is housed inside the housing,
A power supply unit for illumination in which the bottom wall portion of the housing and the bottom wall of the container are screwed together .   The power supply unit for illumination according to claim 1, wherein the heat sink is formed of a metal member, and the housing is formed of a resin member. A lid for closing the other end of the heat sink,
The power supply unit for lighting according to claim 1 or 2, wherein the lid body fixes a terminal block arranged outside the heat sink.   The power supply unit for lighting according to any one of claims 1 to 3, wherein the heat sink and the bottom wall portion are separate bodies. Before SL heatsink power supply unit for illumination as claimed in claim 1 which is fixed to the outside of the peripheral wall portion in any one of claims 4. The casing is formed in a bottomed tubular shape by integrally forming the bottom wall portion and the peripheral wall portion,
The power supply unit for illumination according to claim 5, wherein the housing is formed in a bottomed tubular shape and is housed inside the housing.   The power supply substrate is not directly housed in a housing space formed inside the housing, but is housed inside the housing via the housing. Power supply unit for lighting. A power supply unit for illumination according to any one of claims 1 to 7,
A lighting device comprising: a light source unit connected to the bottom wall portion.