JP6971591B2 - Lighting equipment - Google Patents

Description

The present invention relates to a lighting device and a method for manufacturing the lighting device, and specifically relates to an LED lighting fixture, particularly a HID (High Intensity Discharge lamp) type LED lamp used for high ceiling applications.

The conventionally used umbrella-shaped HID alternative LED lamp shown in Patent Document 1 is restricted by the shade shape of the fixture, and it is necessary to attach the base to a rod-shaped or tubular part at the expense of a heat sink. It was shaped like this. In this case, the amount (volume, surface area) of the heat radiating portion is reduced, which causes a decrease in heat dissipation.

Another problem is that the rod-shaped or tubular parts to which the base is attached cannot obtain sufficient strength against the moment force when the lamp is attached to the socket of the fixture body (a circle in which the light source is arranged when the lamp is attached). Since the lamp is rotated around the plate-shaped part, the moment force applied to the shaft increases). In addition, when the lamp is attached to the fixture, the base may loosen when vibration is applied, or the air in the base may be loosened. There was a problem of obstructing the flow of.

The conventional umbrella-shaped HID alternative LED lamp requires a large mold because it uses a die-cast molded product that uses a metal material such as aluminum for the heat dissipation part, and if it is miniaturized, it is necessary for heat dissipation. It is difficult to obtain a sufficient surface area, and in the case of die-cast molding, the heat radiation piece (fin) cannot be molded thinly, the weight of the entire lamp becomes heavy, and the vibration resistance is lacking.

Further, a wiring connected to the light source unit is inserted inside the cylindrical component, and has a fail-safe function against smoke generation and ignition caused by an electrical defect. However, in a lighting device with such a structure, since the tubular body supports the entire lighting device, if stress is concentrated on the joint with the heat receiving body and the luminaire is destroyed, the wiring will be exposed for safety reasons. There is a risk of. Further, since the tubular body has a function as a heat radiating body, the temperature tends to rise, and it is necessary to fully consider the heat resistant temperature of the wiring. Further, the wiring outlet on the light source side has a sharp edge because the tubular body is made of metal, and the coating may be broken and short-circuited by contact with the wiring. In that case, there is a risk of ground fault or electric shock.

Patent Document 2 is an example of a fall prevention measure, but it is intended for a lamp having a large weight (heavy) as a whole, such as the above-mentioned conventional umbrella-shaped HID alternative LED lamp, which is redundant. It is composed.

Japanese Unexamined Patent Publication No. 2015-05538 Japanese Unexamined Patent Publication No. 2013-084439

The hanging part fixed to the attached part was destroyed by the stress due to the vibration, and there was a possibility that the equipment would fall.
Lighting equipment used for high ceiling applications requires measures to prevent the fixtures from falling.

The present invention provides a lighting device having a stress-resistant suspension.

The lighting device according to one aspect of the present invention is
In a lighting device having a hanging part fixed to a mounted part,
The hanging part is
With a pipe
A flange having a cylindrical portion covering the end of the pipe,
It is characterized by having an assembly mechanism in which the pipe is loosely attached to the cylindrical portion.

In the assembly mechanism, the pipe is loosely attached to the cylindrical portion to disperse the stress applied to the suspended portion, so that damage to the suspended portion can be suppressed.

Six views and perspective views of the lighting device 1000. A perspective view of the lighting device 1000. An exploded perspective view of the light source unit 100. An exploded perspective view of the light source unit 100 and the heat radiating unit 200. Perspective view of the cover stopper 130. Perspective view of the reflector 120. A perspective view of the stabilizer 160. The perspective view of the heat radiating piece 270 and the heat radiating piece 275. Perspective view of the arm 580. An exploded perspective view of the connection portion 300. Perspective view of the holder 390. The perspective view which removed a part of the heat dissipation part 200 from the lighting apparatus 1000. Schematic installation diagram of the lighting device 1000. Sectional drawing of the main part of a light source part 100. The perspective view of the connection part 300. A cross-sectional view of the connection portion 300 of FIG. 15, a BB cross-sectional view of the connection portion 300 and the fixing portion 500, and an EE cross-sectional view of the wiring portion 400. FIG. 15 is an enlarged perspective sectional view of a DD portion of the connection portion 300 of FIG. FIG. 12 is a sectional view taken along the line CC of the heat radiating portion 200 of FIG. Another block diagram of the light source unit 100 in the second embodiment. Another block diagram of the arm 580 according to the second embodiment. The block diagram of the luminaire 614 and the luminaire 1000 in Embodiment 3. FIG. The perspective view of the lighting apparatus 1000 in Embodiment 3. FIG. The block diagram of the connection part 300 in Embodiment 3. FIG. FIG. 3 is a configuration diagram of a support 310, a lid 320, and a ring 340 according to the third embodiment. FIG. 3 is a sectional view taken along line EE of the base housing 301 and the support 310 according to the third embodiment. FIG. 3 is a sectional view taken along line FF of the base housing 301 and the support 310 according to the third embodiment. FIG. 3 is a caulking configuration diagram of the connection portion 300 in the third embodiment. The block diagram of the support 310 and the lid part 320 in Embodiment 3. FIG. The block diagram of the fall prevention mechanism in Embodiment 3. The block diagram of the arm 580 and the product label 780 in Embodiment 3. FIG. The perspective view of the lighting apparatus 1000 in Embodiment 4. FIG. The side view of the lighting apparatus 1000 in Embodiment 4. FIG. The bottom view of the lighting apparatus 1000 in Embodiment 4. The plan view of the lighting apparatus 1000 in Embodiment 4. FIG. An exploded perspective view of the lighting device 1000 according to the fourth embodiment. An exploded perspective view of the lighting device 1000 according to the fourth embodiment. A cross-sectional view of the lighting device 1000 according to the fourth embodiment. BB sectional view of the illuminating device 1000 according to the fourth embodiment. FIG. 6 is a fixed structure diagram of a heat radiating portion 200 and a hanging portion 900 in the fourth embodiment. C enlarged view of the lighting apparatus 1000 in Embodiment 4. D enlarged view of the lighting apparatus 1000 in Embodiment 4. FIG. 6 is a fixed structure diagram of the clip 950 and the cover 110 in the fourth embodiment. The perspective view of the suspension part 900 in Embodiment 4. FIG. FIG. 6 is a sectional view taken along the line CC of the suspension portion 900 according to the fourth embodiment. The E enlarged view of the suspension part 900 in Embodiment 4. FIG. The explanatory view of the packing 942 in Embodiment 4. FIG. Another fixed structure diagram of the clip 950 and the cover 110 in the fourth embodiment. Another fixed structure diagram of the heat radiation portion 200 and the suspension portion 900 in the fourth embodiment. Another fixed structure diagram of the heat radiation portion 200 and the suspension portion 900 in the fourth embodiment. Another block diagram of the instrument shade 800 according to the fourth embodiment. Another block diagram of the instrument cap 800 and the arm 850 according to the fourth embodiment. Another block diagram of the mounting flange 930 according to the fourth embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one. Further, in the description of the embodiment, when the directions, directions or positions such as top, bottom, left, right, front, back, front and back are indicated, those notations are described as such for convenience of explanation. It does not limit the arrangement and orientation of devices, appliances, parts, etc.
In the following description, the metal is an aluminum, iron, magnesium, zinc or other formable metal material, or a metal material containing any of these. When a metal material is used, an oxide film, a coating film, or the like may be formed on the surface for the purpose of corrosion resistance, wear resistance, heat dissipation, and the like, and an aluminum oxide film is preferably applied to the aluminum surface. Alumite is used.
Further, the resin is a resin material containing acrylic (Polymethyl methyllate: PMMA), polycarbonate (PC), polybutylene terephthalate (PBT) or other moldable resin material, or any of these, and is preferable. , Acrylic is used.

Embodiment 1.
*** Explanation of configuration ***
FIG. 1 is a hexagonal view and a perspective view of the lighting device 1000.
FIG. 2 is a perspective view of the lighting device 1000.
The lighting device 1000 according to the present embodiment has a light source unit 100, a heat radiating unit 200, a connection unit 300, a wiring unit 400, and a fixing unit 500.
The central axis O is an axis passing through the center of the illuminating device 1000.

FIG. 3 is an exploded perspective view of the light source unit 100.
The light source unit 100 is a light source unit having a light source.
The light source unit 100 has a light source substrate 150. The light source unit 100 has at least one or more light source elements 140, and a plurality of light source elements 140 are arranged and fixed to the light source substrate 150.
The light source unit 100 has a cover 110 that covers the light source substrate, a reflector 120, and a cover stopper 130 that fixes the cover 110 and the reflector 120.
The light source unit 100 has a stabilizer 160 that fixes the center of the light source substrate 150 to the heat receiving body 260.
The light source substrate 150 is fixed to the heat receiving body 260 in a state of being sandwiched between the reflecting plate 120 and the heat receiving body 260.
Further, the light source substrate 150 is fixed to the heat receiving body 260 in a state of being sandwiched between the stabilizer 160 and the heat receiving body 260.
In the present embodiment, the light source substrate 150 is not fixed to the heat receiving body 260 by using a metal component, but is fixed in a state of being separated from the metal component.

As shown in FIG. 2, the fixing portion 500 fixes the light source portion 100 and the connecting portion 300.
Further, the fixing portion 500 is fixed to the light source portion 100 and the connecting portion 300 in a state of being sufficiently insulated from the light source portion 100, the connecting portion 300, and the live power portion of the wiring portion 400.
The fixing portion 500 is composed of a plurality of plate-shaped arms 580.
In the present embodiment, the arm 580 also serves as a part of the heat sink, and is arranged between the light source unit 100 and the connection unit 300.
The plurality of arms 580 are fixed to the heat receiving body 260 and the connecting portion 300.
There are four arms 580, which are arranged in a cross shape at 90 degree intervals.

As shown in FIG. 2, the heat radiating unit 200 is a heat sink for radiating the operating heat of the light source element 140, and is arranged behind the light source unit 100.
The heat radiating unit 200 is composed of a heat receiving body 260, a plurality of heat radiating pieces 270, and a plurality of arms 580.
The heat receiving body 260 is a component to which the light source unit 100 is attached and transfers the operating heat of the light source unit 100.
The heat radiating piece 270 is a plate-shaped heat radiating fin which is a heat radiating body.
The arm 580 is a metal plate connecting the heat receiving body 260 and the connecting portion 300.
The arm 580 also serves as a heat radiating piece 270, and extends from the heat receiving body 260 to the connecting portion 300.
The light source unit 100 is fixed to the front surface of the heat receiving body 260, and the plurality of heat radiating pieces 270 are fixed to the back surface of the heat receiving body 260.

As shown in FIG. 2, the connection portion 300 is a portion connected to a base socket of a lighting fixture and electrically connected to an external power source.
The connection portion 300 has a base 305 and a holder 390.
The base 305 is screwed and fixed to the base socket.
The holder 390 holds the base 305 and fixes the arm 580.

The wiring unit 400 electrically connects the base 305 and the light source unit 100.
As shown in FIG. 4, the wiring portion 400 has a wiring cylinder 410 and a wiring material 430.
The wiring cylinder 410 is arranged stress-free between the light source unit 100 and the connection unit 300.
The wiring material 430 is an electric wire arranged inside the wiring cylinder 410, and electrically connects the light source unit 100 and the connection unit 300.

<< Detailed explanation of parts >>
Hereinafter, the parts will be described in detail with reference to the drawings.

<Cover 110 of the light source unit 100>
As shown in FIG. 3, the cover 110 has a dish shape, a hemispherical shape, or a dome shape.
The cover 110 is fixed to the reflector 120 by covering the peripheral edge 111 with a ring-shaped packing 113.
The cover 110 is a transparent or translucent resin cover. In the present embodiment, the cover 110 is formed of a mixed resin material in which a diffusing agent is mixed with acrylic, and is a milky white cover that diffuses and transmits light, and diffuses to reduce the graininess of the light source element 140, which is a point light source. It has a function.

<Light source element 140 of the light source unit 100>
The light source element 140 is an LED element surface-mounted on the light source substrate 150. As the LED element, for example, a pseudo-white LED packaged by arranging a phosphor that converts blue light into yellow light on an LED chip that emits blue light having a wavelength of about 440 to 480 nm can be used (LED). package).
As shown in FIG. 3, in the present embodiment, the case where the light source element 140 is an LED package and the light source substrate 150 is an LED substrate is shown. The light source elements 140 are arranged concentrically.

<Light source substrate 150 of the light source unit 100>
As shown in FIG. 4, the light source substrate 150 has a substantially square rectangular shape.
In the present embodiment, the light source substrate 150 has four sides including a pair of parallel short sides 151 and a pair of parallel long sides 152.
The short side 151 is a short side shorter than the long side 152, and the long side 152 is a long side longer than the short side 151.
Further, the corner of the light source substrate 150 has four arcuate sides 153 connecting the four sides of the short side 151 and the long side 152.
The light source substrate 150 has a fitting hole 156 for fitting the stabilizer 160 in the center.
The fitting hole 156 has concave tooth receivers 155 at two positions.
The two tooth receivers 155 are not oriented in the 180 degree direction, but the two tooth receivers 155 are formed so that the central angle is 135 degrees.
The light source substrate 150 is provided with a mark 154. The mark 154 is a mark for designating the orientation in which the stabilizer 160 is attached.
As the light source substrate 150, an aluminum substrate, a glass epoxy substrate, or the like is used.

<Insulation sheet 180 of the light source unit 100>
The insulating sheet 180 is an insulating thin plate arranged between the light source substrate 150 and the heat receiving body 260. The insulating sheet 180 may be mixed with a thermally conductive filler or the like.
The shape of the insulating sheet 180 is the same as that of the heat receiving body 260, and is circular.
The insulating sheet 180 has a wiring hole 181 in which the stabilizer 160 is fitted in the center.
There are two screw holes 182 on both sides of the wiring hole 181.

<Cover stopper 130 for the light source unit 100>
As shown in FIG. 5, the cover stopper 130 has an annular shape.
The cover stopper 130 has four screw holes 133.
The cover stopper 130 has convex portions 134 at four points on the inner side surface.
The cover stopper 130 is made of metal.

<Reflector 120 of the light source unit 100>
As shown in FIG. 6, the reflector 120 has an annular shape and has a circular opening 129 in the center.
The diameter of the opening 129 is larger than the maximum diameter of the concentric arrangement of the light source elements 140 and smaller than any one side of the rectangular light source substrate 150.
The reflector 120 has an inclined reflecting surface 121 on the inner peripheral surface.
The reflector 120 has an annular groove 122 on its surface.
The annular groove 122 is a recess for fitting the edge portion 111 of the cover 110 and the packing 113.
The reflector 120 has notches 123 at four locations corresponding to the positions of the protrusions 134.
The reflector 120 has substrate retainers 124 at four locations on the back surface.
The substrate retainer 124 has a shape composed of an arcuate side and a straight line, and has a shape that matches the shape of the corner of the light source substrate 150.
As shown in FIG. 14, the substrate retainer 124 is a surface recessed from the back surface by the thickness T of the light source substrate 150, and the substrate retainer 124 is formed with a plurality of protrusions 126 for pressing the light source substrate 150.
The reflector 120 has a screw hole 125 on the radial outer side of the substrate retainer 124.
The reflective surface 121 is also recessed from the back surface by the thickness T of the light source substrate 150, and the light source substrate 150 is pressed against the heat receiving body 260 by the entire annular end portion of the reflective surface 121.
The reflector 120 is made of resin.
The reflector 120 has a highly reflective material on the entire surface, or at least on the reflective surface 121.

<Stabilizer 160 of light source unit 100>
As shown in FIG. 7, in the stabilizer 160, the center of the light source substrate 150 is fixed to the heat receiving body 260, and the center of the light source substrate 150 is brought into close contact with the heat receiving body 260.
The stabilizer 160 has a dome-shaped disk shape.
The stabilizer 160 is made of resin.
The stabilizer 160 has a highly reflective material on the entire surface.

The stabilizer 160 has two screw holes 161 and is fixed to the heat receiving body 260 with two screws.
The center of the light source substrate 150 is sandwiched and fixed between the stabilizer 160 and the heat receiving body 260.
The stabilizer 160 has an insertion hole 461 in the center through which the wiring material 430 penetrating the cylinder stop portion 162 is passed.

The stabilizer 160 has a cylinder stop portion 162 in which the wiring cylinder 410 is fitted in the center of the back surface.
The cylinder stop portion 162 has a thick cylinder portion 163, a thin cylinder portion 165, and a thin cylinder portion 165.
The thick cylinder portion 163 and the thin cylinder portion 165 are cylinders forming the insertion hole 461.
The thick cylinder portion 163 is thicker than the thin cylinder portion 165, and the diameter of the thick cylinder portion 163 is larger than the diameter of the thin cylinder portion 165.
The annular surface 164 is an annular ring surface formed by the difference in thickness in the radial direction between the thick cylinder portion 163 and the thin cylinder portion 165.
The thick cylinder portion 163 and the thin cylinder portion 165 have an insertion hole 461 for passing the wiring material 430 in the center.

The stabilizer 160 has a wiring groove 166 and a wiring groove 167.
The wiring groove 166 and the wiring groove 167 are grooves for arranging the wiring material 430.
The wiring groove 167 is not formed on a straight line, and the wiring groove 167 forms a curved groove.
The light source substrate 150 has two terminals 157. The central angle of the two terminals 157 is less than 180 degrees, and the outlets of the wiring groove 166 and the wiring groove 167 coincide with the positions of the two terminals 157.
The wiring groove 166 and the wiring groove 167 have a wide portion 173 having a wide width on the outer periphery of the stabilizer 160. The wide portion 173 allows the wiring material 430 to be freely routed in the left-right direction of the wiring groove 166 or the wiring groove 167.

The stabilizer 160 has a cylindrical fitting portion 170 and a holding surface 171 formed of an annular flat surface around the fitting portion 170.
The fitting portion 170 has the same shape as the fitting hole 156.
The fitting portion 170 has the same height as the thickness T of the light source substrate 150, and when the fitting portion 170 is fitted into the fitting hole 156, the pressing surface 171 comes into close contact with the surface of the light source substrate 150.
The fitting portion 170 has two tooth portions 168. The two tooth portions 168 are formed so that the central angle is 135 degrees. The tooth portion 168 is fitted into the tooth receiver 155 of the light source substrate 150.
The stabilizer 160 has a mark 169. The mark 169 is a mark for designating the direction in which the stabilizer 160 is attached to the light source substrate 150.
The mark 169 is aligned with the mark 154, and the tooth portion 168 and the tooth receiver 155 are aligned with each other.
As a result, the outlets of the wiring groove 166 and the wiring groove 167 coincide with the positions of the two terminals 157.

<Dissipating unit 200>
The heat radiating unit 200 includes a heat receiving body 260 to which the light source unit 100 is fixed, a plurality of heat radiating pieces 270 and radiating pieces 275 fixed to the heat receiving body 260, and a plurality of arms fixed to the heat receiving body 260 and the connecting part 300. It has 580 and.

<Heat receiving body 260 of heat radiation unit 200>
As shown in FIG. 4, the heat receiving body 260 is a disk-shaped metal plate.
The outer edge of the heat receiving body 260 is fitted inside the cover stopper 130.
The heat receiving body 260 has a screw hole 261 for a countersunk screw 190 (see (a) in FIG. 2) for fixing the arm 580.
The heat receiving body 260 has a caulking portion 262 for fixing the heat radiating piece 270.
The heat receiving body 260 has a wiring hole 264 in which the stabilizer 160 is fitted in the center and the wiring material 430 is passed through.
The heat receiving body 260 has screw holes 263 for fixing the stabilizer 160 on both sides of the wiring hole 264.
The heat receiving body 260 has a screw hole 265 for fixing the cover stopper 130.
The screw hole 263 and the screw hole 265 are holes that have been threaded and into which screws are screwed.

<Heat dissipation piece 270 and heat dissipation piece 275 of heat dissipation unit 200>
The heat radiation unit 200 has 20 heat radiation pieces 270 and four heat radiation pieces 275. The 20 heat radiation pieces 270 and the four heat radiation pieces 275 are centered around the central axis O of the light source unit 100. Arranged radially from the axis O.
The plurality of heat radiating pieces 270 and the plurality of heat radiating pieces 275 are fixed to the heat receiving body 260.
The heat radiating piece 270 and the heat radiating piece 275 are made of metal.

As shown in FIG. 8A, the heat radiating piece 270 is a heat radiating plate and has a heat radiating plate 271 having a substantially rectangular shape and a fixing plate 272 orthogonal to the heat radiating plate 271 and fixed to a heat receiving body. ..
The heat radiating piece 270 of FIG. 8A is provided with two heat radiating plates 271 for one fixing plate 272.
Although the heat radiating plate 271 has a substantially rectangular shape, it is partially cut diagonally into a curved shape and has a shape along the inner surface of the luminaire.
The fixing plate 272 has a trapezoidal shape and has caulking portions 273 at two locations.
As shown in FIG. 8B, the heat sink 275 is also a heat sink, and has a heat sink 276 having a substantially rectangular shape and a fixing plate 277 orthogonal to the heat sink 276 and fixed to the heat receiving body. ..
The heat radiating piece 275 of FIG. 8B is provided with one heat radiating plate 276 for each fixed plate 277. The heat sink 276 has an outer shape having the same shape as the heat sink 271.
The heat radiating piece 275 is a heat radiating plate attached as a pair with the arm 580. The fixing plate 277 has a trapezoidal shape and has screw holes 278 at two locations.

<Arm 580 as a fixed portion 500 and a heat radiating portion 200>
As shown in FIG. 2, a plurality of arms 580, which are fixed portions 500, are arranged radially from the central axis O around the central axis O of the light source portion 100.
Each arm 580 also functions as a heat radiating plate of the heat radiating unit 200. FIG. 2 shows four orthogonal arms 580.
The four arms 580 are fixed to the light source unit 100 and the connection unit 300 apart from each other in order to ensure air permeability.
The arm 580 is made of metal.

As shown in FIG. 9, each arm 580 has a basic plate portion 581 arranged between the heat receiving body 260 and the connecting portion 300. The basic plate portion 581 has an L-shape, a right-angled triangle shape, or a shape in which the hypotenuse of the right-angled triangle is dented.
Each arm 580 has a heat receiving plate portion 582 orthogonal to the basic plate portion 581 and fixed to the heat receiving body 260, and a connecting plate portion 583 orthogonal to the basic plate portion 581 and fixed to the connecting portion 300.
The heat receiving plate portion 582 has a threaded screw hole 588.
The connecting plate portion 583 has a threaded screw hole 589.
Each arm 580 has a reinforcing plate portion 584 orthogonal to the basic plate portion 581 between the heat receiving body 260 and the connecting portion 300.
The heat receiving plate portion 582 and the connecting plate portion 583 are in a state of being bent in the same direction (the same direction), and the arm 580 has a U-shape.
The arm 580 may be Z-shaped with the heat receiving plate portion 582 and the connecting plate portion 583 bent in opposite directions (opposite directions).
The basic plate portion 581 has a heat radiating portion 586 and an extension portion 587.
The heat radiating unit 586 has an outer shape having the same shape as the heat radiating plate 271.
The extension 587 has a wire hole 585. The extension 587 has a threaded screw hole 590.

The fixing portion 500 fixes the light source portion 100 and the connecting portion 300, and the fixing portion 500 has a plurality of plates including the arm 580, and only the plurality of plates are used to connect the light source portion 100 and the connecting portion 300. Is to fix.
Further, the fixing portion 500 is fixed to the light source portion 100 and the connecting portion 300 in a state of being sufficiently insulated from the light source portion 100, the connecting portion 300, and the live power portion of the wiring portion 400.

<Connection part 300>
As shown in FIG. 10, the connection portion 300 includes a base 305, a support 310 to which the base 305 is fixed, a holder 390 for attaching the support 310 to the fixing portion 500, and a lid portion 320 for covering the support 310. Have.
The holder 390 and the lid 320 are formed of a material having electrical insulation, whereby the connection portion 300 and the fixing portion 500 are fixed in a mutually insulated state.
The connecting portion 300 further has a ring 340 that covers the periphery of the lid portion 320, and a drop stopper 350 that is hooked on the ring 340 and the fixing portion 500.
The screw 360 is passed through and fixed through the screw holes of the upper hook 352 at one end of the drop stopper 350, the ring 340, the lid portion 320, the fixing portion 500, and the lower hook 353 at the other end of the drop stopper 350. It is screwed to the portion 500.

<Cap 305 of connection part 300>
As shown in FIG. 10, the base 305 is a power receiving end that receives power from an external power source, and has a base housing 301 and an eyelet 302.
The base housing 301 is made of metal.

<Support 310 of connection portion 300>
As shown in FIG. 10, the support 310 has a cylindrical shape having a collar.
The support 310 is made of metal.
The support 310 has a joint portion 311 into which the base 305 is screwed.
The support 310 has a crimped portion 316 that crimps the end portion of the base housing 301. The end portion of the base housing 301 may be further soldered at the caulking portion 316.
The support 310 has a tubular support cylinder portion 312.
The support 310 has a support flange 313 at one end of the support cylinder 312. The support flange portion 313 has a shape in which four points are cut out from the annular shape.
The support flange portion 313 has four U-shaped receiving portions 314 arranged at 90 degree intervals.
The support flange portion 313 has four C-shaped wall receiving portions 315 arranged at 90 degree intervals.
The U-shaped receiving portion 314 and the C-shaped wall receiving portion 315 are located at the same location and form a notch in the supporting flange portion 313.
The C-shaped wall receiving portion 315 is a C-shaped notch, and the notch is larger than that of the U-shaped receiving portion 314.
The U-shaped receiving portion 314 forms a U-shaped space in which the screw enclosure 324 of the lid portion 320 is arranged.
The C-shaped wall receiving portion 315 forms a C-shaped space in which the C-shaped wall 397 of the holder 390 is arranged.
The support 310 is less likely to be damaged such as deformed, cracked, or chipped even when the base 305 is firmly crimped. That is, the base 305 can be firmly crimped to the metal support 310.
In this embodiment, the support 310 is configured so as not to come into contact with the screw 360 so that the support 310 and the screw 360 are sufficiently insulated.

<Cover 320 of connection portion 300>
As shown in FIG. 10, the lid portion 320 has a disk shape with an opening in the center.
The lid portion 320 is formed of a material having electrical insulation, and is made of resin in the present embodiment.
The lid portion 320 has a lid hole 322 in the center through which the joint portion 311 penetrates.
The lid portion 320 has a small cylinder portion 321 that covers the periphery of the support cylinder portion 312.
The lid portion 320 has a large cylinder portion 323 that covers the support flange portion 313.
The lid portion 320 has a ring arrangement surface 326 between the small cylinder portion 321 and the large cylinder portion 323. The ring arrangement surface 326 is an annular plane formed by the difference in thickness in the radial direction between the small cylinder portion 321 and the large cylinder portion 323.
The large cylinder portion 323 has screw enclosures 324 corresponding to the notches of the support flange portion 313 at four inner circumferences. The screw enclosure 324 is formed with a screw hole 325 through which the screw 360 is passed.
The outer shape of the screw enclosure 324 is the same as the inner shape of the U-shaped receiving portion 314, and the screw enclosure 324 is fitted into the U-shaped receiving portion 314.
By using the lid portion 320 configured in this way, the support 310 and the screw 360 are sufficiently insulated.

<Ring 340 of connection part 300>
As shown in FIG. 10, the ring 340 is a thin flat plate and has an annular shape.
The ring 340 is made of metal.
The ring 340 has a lid hole 322 in the center through which the small cylinder portion 321 penetrates.
The ring 340 is arranged on the ring arrangement surface 326.
The ring 340 has the same inner diameter as the outer diameter of the small cylinder portion 321 and has the same outer diameter as the outer diameter of the large cylinder portion 323.
The inner diameter of the ring 340 is smaller than the outer diameter of the support flange portion 313.
The ring 340 has four screw holes 341 arranged at 90 degree intervals.
By using the ring 340 configured in this way, the support 310 and the arm 580 are securely fixed by screwing for a long period of time.

<Fall stopper 350 of connection part 300>
As shown in FIG. 10, the drop stopper 350 is a thin flat plate and has a U-shape.
The fall stopper 350 is made of metal.
The drop stopper 350 has an upper hook 352 and a lower hook 353 bent 90 degrees.
The upper hook 352 and the lower hook 353 have a passage hole 351 through which the screw 360 is passed.
The passage hole 351 has a diameter larger than the diameter of the body of the screw 360.
By using the drop stopper 350 configured in this way, the support 310 and the arm 580 are more securely fixed by screwing for a long period of time.

<Holder 390 of connection part 300>
As shown in FIGS. 10 and 11, the holder 390 has a shape in which a cross wall is provided on the disk.
The holder 390 is formed of a material having electrical insulation, and is made of resin in this embodiment.
The holder 390 has a board portion 391 in close contact with the support 310 and a standing portion 392 fixed to the arm 580.
The board portion 391 has a disk shape.
The standing portion 392 is a cross plate orthogonal to the board portion 391, and has a surface perpendicular to the heat receiving body 260.
The board portion 391 has an insertion hole 462 in the center through which the wiring material 430 is passed.
The vertical portion 392 has a pipe hole 393 in the center through which the wiring cylinder 410 is passed.

As shown in FIG. 11, the board 391 has four U-shaped notches 396 arranged at 90 degree intervals.
The board 391 has four C-shaped walls 397 arranged at 90 degree intervals.
The U-shaped notch 396 and the C-shaped wall 397 are in the same place and form a notch of the board portion 391.
The C-shaped wall 397 is a vertical wall protruding from the back surface of the board portion 391, and is a C-shaped wall arranged around the screw enclosure 324.
The inner shape of the U-shaped notch 396 and the inner shape of the C-shaped wall 397 have the same U-shape as the outer shape of the screw enclosure 324, and form a U-shaped space in which the screw enclosure 324 of the lid portion 320 is arranged. The screw enclosure 324 is fitted into a U-shaped space formed by the U-shaped notch 396 and the C-shaped wall 397.
The outer shape of the C-shaped wall 397 has the same C-shaped shape as the inner shape of the C-shaped wall receiving portion 315, and the C-shaped wall 397 is fitted into the C-shaped space formed by the C-shaped wall receiving portion 315.

The standing portion 392 is composed of four standing plates 381 arranged in a cross direction intersecting the central axis O.
The standing plate 381 has a threaded screw hole 398 for fixing the basic plate portion 581.
The standing plate 381 has a rectangular shape, and is arranged parallel to the central axis O and substantially radially from the central axis O at intervals of 90 degrees.
The radial width of the standing plate 381 is the same as or slightly larger than the extension portion 587 of the arm 580.
The length of the standing plate 381 in the central axis O direction is up to the front of the screw hole 398 of the extension portion 587 of the arm 580.
There is a pipe hole 393 in the center of the four standing plates 381, and the four standing plates 381 are joined around the pipe hole 393.
As shown in FIG. 16B, the two standing portions 392 arranged in the 180-degree direction are not on a straight line, and the basic plate portion 581 of the fixed arm 580 intersects at the central axis O. It is arranged at a position deviated from the central axis O so as to overlap the direction. That is, the two standing portions 392 arranged in the 180-degree direction are arranged at positions displaced by the thickness of the basic plate portion 581.
By using the lid portion 320 configured in this way, the support 310 and the arm 580 are sufficiently insulated.

<Wiring part 400>
As shown in FIG. 7, the wiring portion 400 has a wiring cylinder 410 and a wiring material 430. A wiring path is formed inside the lighting device 1000 by the wiring portion 400 so that the wiring material 430 is not exposed to the outside.

<Wiring cylinder 410>
The wiring cylinder 410 is a metal pipe having a constant inner diameter and outer diameter.
As shown in FIG. 12, the wiring cylinder 410 is arranged so that the cylinder shaft (cylinder central shaft) overlaps with the central shaft O, and is arranged between the light source unit 100 and the connection unit 300.
The wiring cylinder 410 is arranged in a space surrounded by four reinforcing plate portions 584.
As shown in FIGS. 12A and 12B, one end of the wiring cylinder 410 is fitted into the cylinder stop portion 162.
As shown in FIG. 12 (c), the other end of the wiring cylinder 410 is in contact with the board portion 391.

<Wiring material 430>
The wiring material 430 is an electric wire that is arranged inside the wiring cylinder 410 and electrically connects the light source unit 100 and the external power source connected to the connection unit 300.
The wiring material 430 passes through the insertion hole 462 of the board portion 391, the wiring cylinder 410, and the insertion hole 461 of the stabilizer 160, and connects the base 305 and the light source substrate 150.
The wiring material 430 extends from the base 305, is inserted into the wiring cylinder 410 passing through the holder 390, and is taken out from the stabilizer 160. The extracted wiring material 430 is coupled to the light source substrate 150 and electrically connected to the light source element 140.

A wiring material 430 for energization extends from the holder 390 to which the base 305 is attached, and the wiring material 430 is connected to the light source substrate 150 to obtain a function as a lighting device.
The wiring portion 400 is composed of a tubular wiring cylinder 410 made of metal and a stabilizer 160 made of a low thermal conductive material, and a wiring material 430 is inserted into the internal space of the wiring cylinder 410 and the insertion hole 461 of the stabilizer 160. ..
The stabilizer 160 is fixed to the heat receiving body 260, and the movement of the wiring cylinder 410 is restricted by the stabilizer 160 and the holder 390. Here, the restriction of movement means fixing that allows play to the extent that it does not easily come off, and does not mean fastening with screws, caulking, bonding, or the like. In particular, the degree of fixation means that heat conduction cannot be expected (contact thermal resistance is sufficiently high).

<Fall prevention mechanism 600>
The lighting device 1000 may be provided with a fall prevention mechanism 600 for preventing the fall.
The fall prevention mechanism 600 includes a wire hole 585 and a wire 621 formed in the arm 580.
The lighting device 1000 inserts the wire 621 into the wire hole 585 formed in the arm 580 to prevent the wire from falling.
The wire 621 is made of metal.
As shown in FIG. 13, the luminaire 1000 is attached to the luminaire 614.
The luminaire 614 is suspended from the ceiling 610 by a hanging tool 612.
The luminaire 614 has a socket 613 to which a base 305 of the luminaire 1000 is attached.
The arm 580 has a wire hole 585 through which the wire 621 is passed.
As shown in FIG. 13 (a), the wire 621 is passed through one wire hole 585 and fixed to the ceiling 610 by the metal fitting 611.
As shown in FIG. 13 (b), the wire 621 is passed through four wire holes 585 and fixed to the ceiling 610 by the metal fitting 611.
As shown in FIG. 13 (c), the wire 621 is passed through one wire hole 585 and a through hole 619, and is fixed to the ceiling 610 by a metal fitting 611.
The wire 621 is inserted into a through hole 619 formed at the end of the cover stopper 130 to also serve as a fall prevention function for the cover stopper 130 alone.
It is desirable to fit a rubber grommet into the wire hole 585 and the through hole 619 to prevent the wire 621 from being damaged. Alternatively, it is desirable to coat the wire 621 with resin.

<Fixed structure of light source unit 100>
As shown in FIG. 3, the diameter D1 of the cover stopper 130 is the maximum diameter of the lighting device 1000.
The diameter D5 of the heat receiving body 260 is the same as the diameter of the reflector 120.
The diameter D2 of the cover 110 is smaller than the outer diameter D3 of the annular groove 122 and larger than the inner diameter D4 of the annular groove 122.
The outer diameter of the packing 113 is smaller than the outer diameter D3 of the annular groove 122, and the inner diameter of the packing 113 is larger than the inner diameter D4 of the annular groove 122.

FIG. 14 shows a schematic cross-sectional structure of the light source unit 100.
The insulating sheet 180 is arranged on the heat receiving body 260, and the light source substrate 150 is arranged on the insulating sheet 180.
The light source substrate 150 is pressed against the heat receiving body 260 on the entire circumference of the lower end surface 119 of the reflecting surface 121.
The light source substrate 150 has four corners that are pressed against the heat receiving body 260 by the substrate presser 124.
In the substrate retainer 124, the corners of the light source substrate 150 are pressed against the heat receiving body 260 by the protrusions 126.
There is a screw 115 on the outer side in the radial direction of the substrate retainer 124, and the corner of the light source substrate 150 is securely fixed.

An edge portion 111 of the cover 110 and a packing 113 are arranged in the annular groove 122, and the annular groove 122 is covered with a cover stopper 130.
By tightening the screw 115, the cover stopper 130 is fixed to the heat receiving body 260.
By fixing the cover stopper 130 to the heat receiving body 260, the packing 113 and the edge portion 111 are fixed to the annular groove 122, and the cover 110 is fixed to the heat receiving body 260.
Since the edge portion 111 and the bent portion 112 of the cover 110 are located on the radial outer side of the reflecting surface 121 and are embedded in the annular groove 122, the edge portion 111 and the bent portion 112 are the paths of light of the light source element 140. Does not interfere.
Since the end portion 135 of the cover stopper 130 is also outside the reflective surface 121 in the radial direction and outside the cover 110, the end portion 135 does not obstruct the light path of the light source element 140.
As described above, the light source unit 100 has a cover 110 that covers the light source substrate 150 and the reflector 120, and a cover stopper 130, and the cover 110 is fixed and covered between the reflector 120 and the cover stopper 130. The stop 130 is fixed to the heat receiving body 260.

<Insulation (electric shock prevention) structure of connection part 300>
As shown in FIGS. 15 and 16, the connection portion 300 has a resin lid portion 320 having electrical insulation and a holder 390, and covers the metal support 310. Further, the screw enclosure 324 of the resin lid 320 covers the metal screw 360. In this way, by covering the metal parts with the resin parts, the creepage distance between the metal parts is secured.
Further, in order to increase the creepage distance between the metal connecting plate portion 583 and the metal support 310, the holder 390 is provided with a C-shaped wall 397.
As shown in FIG. 17, without the C-shaped wall 397, the creepage distance between the metal connecting plate portion 583 and the metal support 310 is the thickness T1 of the board portion 391, but the C-shaped wall 397. If there is, the creepage distance between the metal connection plate portion 583 and the metal support 310 is the creepage distance because the creepage distance is the sum of the thickness T1 of the board portion 391 and the height T2 of the C-shaped wall 397. Can be secured.
If there is a C-shaped wall 397, the creepage distance between the metal screw 360 and the metal support 310 also increases by the height T2 of the C-shaped wall 397 in the direction of the central axis O, and in the radial direction. , The radial length T3 of the C-shaped wall 397 increases.
In this way, by using the lid portion 320 and the holder 390, the support 310 is sufficiently insulated from the screws 360 and the arm 580.

<Fall prevention structure of connection part 300>
As shown in FIG. 17, the connection portion 300 has a metal ring 340 that covers the periphery of the resin lid portion 320.
Since the lid 320 is made of resin, it may deteriorate due to aging or melt due to high temperature. When the screw 360 is fixed to the lid portion 320, the screw 360 may also fall off due to damage to the lid portion 320, and as a result, the light source portion 100 and the heat radiating portion 200 may fall. If the metal ring 340 covers the periphery of the resin lid 320 and is screwed from the ring 340, the screw 360 will not fall off as long as the ring 340 remains even if the lid 320 is damaged. Since the inner diameter of the ring 340 is smaller than the outer diameter of the support 310, the ring 340 will not fall out of the support 310, and even if the lid 320 is completely lost, the ring 340 will not fall out of the support 310. No.
In this way, by using the ring 340, the support 310 and the arm 580 are securely fixed by screwing for a long period of time.

As shown in FIG. 17, the connection portion 300 has a metal drop stopper 350.
The fall stopper 350 sandwiches a metal ring 340 and a metal connecting plate portion 583.
There is a gap S between the connection plate portion 583 and the lower hook 353.
If the screw 360 is loosened due to the vibration of the lighting device 1000, the connection plate portion 583 may come off from the screw 360 without the fall stopper 350, and the light source portion 100 and the heat dissipation portion 200 may fall. With the fall stopper 350, when the screw 360 is loosened, the connection plate portion 583 lowers only the gap S due to gravity, but does not go below the lower hook 353. The connection plate portion 583 is in a dangling state due to the screw 360 between the upper hook 352 and the lower hook 353, but the light source portion 100 and the heat radiating portion 200 do not fall.
In this way, by using the drop stopper 350, the support 310 and the arm 580 are more securely fixed by screwing for a long period of time.

<Structure of heat dissipation unit 200>
As shown in FIG. 18, there is a space having a diameter W1 at the center of the heat radiation piece 270 of the heat radiation unit 200.
Further, in the center of the arm 580, there is a space having a diameter W1.
The adjacent heat radiating plates 271 of the heat radiating pieces 270 are evenly arranged at a central angle θ.
The distance between the adjacent heat sinks 271 becomes narrower toward the center, but the ends of the adjacent heat sinks 271 in the center direction are separated by the distance K1 and the space of the distance K1 is in contact with the space of the diameter W1. , Ensures breathability.
Further, in the space having the diameter W1, the distance between the adjacent arms 580 becomes narrower toward the center, but the ends of the adjacent arms 580 in the center direction are separated by the distance K2, and the space having the distance K2 has the diameter W2. It is in contact with the space of the building and ensures breathability.

<Structure of wiring unit 400>
As shown in FIGS. 16B and 16C, the pipe hole 393 forms a small opening 395 at a position in contact with the board portion 391 and a large opening 394 on the side where the light source portion 100 exists. The pipe hole 393 forms a truncated cone-shaped space.
As shown in FIG. 16 (c), the inner diameter of the wiring cylinder 410 is larger than the outer diameter of the thin cylinder portion 165 and smaller than the outer diameter of the thick cylinder portion 163. Therefore, the thin cylinder portion 165 can be inserted into one end of the wiring cylinder 410, and the end surface of the wiring cylinder 410 comes into contact with the annular surface 164.
As shown in FIGS. 16B and 16C, the outer diameter of the wiring cylinder 410 is smaller than the inner diameter of the fore edge 395 of the pipe hole 393 of the vertical portion 392 and larger than the inner diameter of the insertion hole 462 of the board portion 391.
As shown in FIG. 16 (c), the other end of the wiring cylinder 410 is in contact with the board portion 391. The end surface of the other end of the wiring cylinder 410 is in contact with the surface of the board portion 391 around the insertion hole 462.
Since the length of the wiring cylinder 410 is smaller than the distance between the annular surface 164 and the board portion 391, it can be moved in the length direction. Further, since the inner diameter of the wiring cylinder 410 is larger than the outer diameter of the thin cylinder portion 165 and the outer diameter of the wiring cylinder 410 is smaller than the inner diameter of the small end 395 of the pipe hole 393, the wiring cylinder 410 can move in the radial direction. .. In this way, the wiring cylinder 410 is stress-freely arranged between the light source unit 100 and the connection unit 300.
Since the pipe hole 393 is a truncated cone-shaped space, the outer peripheral surface of the wiring cylinder 410 does not contact the inner peripheral surface of the pipe hole 393 except for the place where it contacts the board portion 391, and heat is not easily transferred to the wiring cylinder 410. .. Therefore, the operating heat of the light source element 140 is less likely to be transferred to the wiring material 430, and the wiring material 430 is not required to have a high heat resistant temperature.

As shown in FIG. 16B, the radial length W4 of the arm 580 is slightly smaller than the radial length W3 of the standing plate 381 of the holder 390. When the lighting device 1000 is handled by hand, the radius of the standing plate 381 of the resin holder 390 is increased to prevent the hand from being injured by the edge of the metal arm 580.
The end of the standing plate 381 of the holder 390 may be bent into an L shape to cover the end face of the metal arm 580.

<Manufacturing method of lighting equipment>
<Manufacturing method of fixed portion 500 and heat radiating portion 200>
The heat radiating unit 200 is a heat radiating body in which a plurality of plate-shaped heat radiating pieces 270 are provided on the back surface of the disc-shaped heat receiving body 260.
An aluminum sheet metal having a thickness of 0.5 mm is punched and further bent to manufacture 20 heat radiation pieces 270.
An aluminum sheet metal having a thickness of 0.5 or more and 1.5 mm or less is punched and further bent to manufacture four heat radiation pieces 275.
An aluminum sheet metal having a thickness of 1.5 mm is punched and further bent to manufacture four arms 580.
Next, the plate-shaped heat-dissipating pieces 270 are radially arranged on the heat-receiving body 260 so that the plurality of heat-dissipating pieces 270 stand upright from the back surface of the heat-receiving body 260 toward the connection portion 300, and the plate-shaped heat-dissipating pieces 270 It is caulked and fixed to the heat receiving body 260.
For this caulking fixing, in order to reduce the number of parts, it is preferable to perform dowel caulking by passing a dowel (half-pulled) processed caulking portion 262 through the caulked portion 273 with a hole and deforming by pressure.
Next, the arm 580 and the heat radiating piece 275 are fixed to the heat receiving body 260. The heat dissipation piece 275 is used to maintain the heat dissipation equilibrium.
By providing the heat radiating piece 275, the heat radiating piece 270, the arm 580, and the heat radiating piece 275 are all arranged at a uniform central angle, and the heat radiating equilibrium can be maintained.
First, the fixing plate 277 of the heat radiation piece 275 is arranged in the heat receiving body 260, further, the heat receiving plate portion 582 of the arm 580 is arranged in the heat receiving body 260, and then the countersunk screw 190 is inserted from the screw hole 261 of the heat receiving body 260. Then, the screw hole 278 and the screw hole 588 are passed through and tightened with a nut.
As a result, the arm 580 and the heat radiating piece 275 are fixed toward the connection portion 300.
In this way, the heat dissipation unit 200 is completed.
The screw hole 588 of the heat receiving plate portion 582 may be configured such that the countersunk screw 190 is directly screwed into the screw hole 588. Further, the assembly order described above is an example, and assembly may be performed in any other order.

<Manufacturing method of connection unit 300>
As shown in FIG. 10, first, the eyelet 302 is fixed to the inside of the base housing 301 in the base 305.
Next, the joint portion 311 of the support portion 310 is inserted into the lid hole 322 of the lid portion 320 so that the screw enclosure 324 of the lid portion 320 fits into the U-shaped receiving portion 314 of the support portion 310.
Next, with the wiring material 430 inserted through the joint portion 311 of the support 310, the base housing 301 of the base 305 is screwed into the joint portion 311 of the support 310, and the base housing 301 and the eyelet of the base 305 are screwed. One end of the wiring material 430 is connected to the 302.
Next, the end of the base housing 301 of the base 305 is crimped to the crimped portion 316 of the support 310, and the base 305 is fixed to the support 310. The crimped portion 316 may be reinforced by soldering or the like to the base housing 301 and the support 310.
In the present embodiment, since both the base housing 301 and the support 310 are made of metal, the base housing 301 is securely fixed by being crimped to the support 310, and is more firmly fixed by being reinforced by soldering or the like. ..
Next, the ring 340 is inserted into the small cylinder portion 321 of the lid portion 320.
Next, the wiring material 430 is inserted from the insertion hole 462 of the holder 390 toward the pipe hole 393.
Next, the wiring material 430 is inserted into the wiring cylinder 410, and the wiring material 410 is inserted into the pipe hole 393 of the holder 390 from one end side with the wiring material 430 inserted.
Next, the holder so that the C-shaped wall 397 of the holder 390 fits into the C-shaped wall receiving portion 315 of the support 310, and the screw enclosure 324 of the lid portion 320 fits into the U-shaped notch 396 of the holder 390. The 390 is attached to the support 310 and the lid 320.
Further, the other end side of the wiring material 430 is inserted into the wiring hole 264 of the heat receiving body 260, and falls so as to sandwich the connection plate portion 583, the ring 340, the screw enclosure 324 of the lid portion 320, and the connection plate portion 583 of the arm 580. Place the stop 350.
Next, the screw 360 is inserted through the screw hole 341 of the ring 340.
The screw 360 is inserted through the passage hole 351 of the upper hook 352 of the drop stopper 350 into the screw enclosure 324 of the lid portion 320, and is screwed into the screw hole 589 formed in the connection plate portion 583 of the arm 580. The screw 360 is screwed into the screw hole 589 until it passes through the passage hole 351 of the lower hook 353 of the drop stopper 350.
The screw 360 closely fixes the upper hook 352, the ring 340, the screw enclosure 324, and the connection plate portion 583 at one end of the drop stopper 350.
That is, the screw 360 is passed through the screw holes of the upper hook 352 at one end of the drop stopper, the ring 340, the lid portion 320, the fixing portion 500, and the lower hook 353 at the other end of the drop stopper, and the screw 360 is fixed. Screw it to the part 500.
Finally, the holder 390 and the arm 580 are screwed together using the screw 399 using the screw hole 398 of the holder 390 and the screw hole 590 of the arm 580.
In this way, the connection portion 300 is completed.
The other end of the wiring material 430 is inserted into the insertion hole 461 of the stabilizer 160 attached to the heat receiving body 260, and the other end of the wiring cylinder 410 is fitted into the cylinder stopper 162 of the stabilizer 160.
Further, the assembly order described above is an example, and assembly may be performed in any other order.

<Fixing method of fixing part 500>
The fixing portion 500 has four arms 580, and the light source portion 100 and the connecting portion 300 are fixed only by the four arms 580.
The arm 580 is bent into a shape such as "U-shaped" or "Z-shaped" in cross-sectional shape.
The heat receiving plate portion 582 at one end of the arm 580 is fixed to the back surface of the heat receiving body 260 together with the fixing plate 277 of the heat radiating piece 275 by using a countersunk screw 190.
Further, the connection plate portion 583 at the other end of the arm 580 is attached to the board portion 391 of the holder 390 by a screw 360.
Further, the basic plate portion 581 of the arm 580 is attached to the standing portion 392 of the holder 390 by a screw 399.
Since the connection plate portion 583 of the arm 580 and the plate portion 391 of the holder 390 have a surface horizontal to the heat receiving body 260, the basic plate portion 581 of the arm 580 should be fixed to the plate portion 391 of the holder 390. Can be done.
Since the basic plate portion 581 of the arm 580 and the standing portion 392 of the holder 390 have a surface perpendicular to the heat receiving body 260, the basic plate portion 581 of the arm 580 and the standing portion 392 of the holder 390 are fixed together. be able to.
The arm 580 and the holder 390 are fixed to the heat receiving body 260 by two surfaces, a horizontal surface and a substantially vertical surface.
As described above, the heat receiving plate portion 582 is fixed to the heat receiving body 260, and the connection plate portion 583 and the basic plate portion 581 are fixed to the holder 390, whereby the light source portion 100 and the connecting portion 300 are fixed. ..
The assembly order described above is an example, and may be assembled in any other order.

<Manufacturing method of the light source unit 100>
As shown in FIGS. 3 and 4, the insulating sheet 180 and the light source substrate 150 are superposed on the heat receiving body 260, and the stabilizer 160 is fitted.
When fitting the stabilizer 160, if the mark 154 and the mark 169 are arranged so as to coincide with each other, the tooth receiver 155 and the tooth portion 168 match, so that the stabilizer 160 can be easily fitted. When the fitting portion 170 of the stabilizer 160 is fitted into the fitting hole 156 of the light source substrate 150, the screw hole 161, the screw hole 182, and the screw hole 263 are in the same position, and the stabilizer 160 is screwed to the heat receiving body 260 with the screw 115. Stop.
The center of the light source substrate 150 is pressed by the pressing surface 171 of the stabilizer 160, and the periphery of the light source substrate 150 is suppressed by the reflecting surface 121 of the reflector 120 and the substrate pressing 124. In this state, the back surface of the light source substrate 150 of the light source unit 100 is fixed to the surface of the heat receiving body 260.
Next, the wiring material 430 drawn out from the insertion hole 461 is soldered to the terminal 157.
Next, the reflector 120 is overlapped so that the corner of the light source substrate 150 coincides with the substrate retainer 124, and the cover 110 to which the packing 113 is attached is fitted into the annular groove 122 and covered with the cover stopper 130. Then, the cover stopper 130 is screwed to the heat receiving body 260 with the screw 115. If the strength is maintained, it may be fixed by caulking instead of screws.
In this way, the light source unit 100 is completed.
The assembly order described above is an example, and may be assembled in any other order.

<< Explanation of action / effect >>
The action and effect of this embodiment will be described.

Since the lighting device 1000 according to the present embodiment is small in weight and light in weight, it is possible to realize fall prevention measures with a simple configuration.
By fixing the light source substrate 150 to the heat receiving body 260, heat generated from the light source element 140 is conducted, and heat is dissipated to reach the fin-shaped heat radiating piece 270 attached to the heat receiving body 260. The heat receiving body 260 and the arm 580 also have a heat dissipation function.
The arm 580 of the heat radiation unit 200 is a metal plate, one of which is fixed to the heat receiving body 260 and the other of which is attached to the holder 390, and the light source unit 100 and the connection unit 300 are fixed by a plurality of plates.

The arm 580 is fixed to the heat receiving body 260, and the shape of the arm 580 is a plate shape as if the fin-shaped heat radiation piece 270 is extended in the direction of the base 305. Since the arm 580 has a plate shape, it promotes the flow of air, and the arm 580 has the same heat dissipation function as the fin-shaped heat dissipation piece 270, so that the heat dissipation efficiency is improved.
Further, one of the arms 580 is bent, and the surface of the heat receiving plate portion 582 is attached to the surface of the heat receiving body 260 from the center to the outer periphery in the radial direction with respect to the heat receiving body 260. High strength can be obtained and weight can be reduced. Further, since the arm 580 has a plate shape and has elasticity in the surface direction, an excessive moment force is applied to the base 305 of the lighting device 1000 or the socket 613 of the lighting device 614 when the lighting device 1000 is attached to the lighting device 614. It can be absorbed by the arm 580. Further, even when vibration is applied to the luminaire 1000 or the luminaire 614, the base socket and the base 305 do not loosen, and the luminaire 1000 can obtain vibration resistance.

Further, the arm 580 connecting the light source unit 100 and the connection unit 300 is not a die-cast molded tubular body as in the conventional case, but is a thin plate heat dissipation fin, so that efficient heat dissipation is possible while being lightweight.

If the shapes of the light source unit 100 and the connection unit 300 are the same, and the shapes of the heat radiation unit 200, the wiring unit 400, and the fixed unit 500 are changed, it can be adapted to various shapes of lighting fixtures. Further, the height of the lighting device 1000 can be changed by changing the heights of only the wiring portion 400 and the fixed portion 500.
Further, the light source unit 100 and the connection unit 300 can be shared with other types of lamps (HID alternative LED lamps).
Further, the holder 390 can be shared with other types of lamps (HID alternative LED lamps).

Since the reflector 120 presses the light source substrate 150 against the heat receiving body 260 and fixes it, efficient heat transfer to the heat receiving body 260 of the heat radiating unit 200 is possible.
Further, since the stabilizer 160 presses the center of the light source substrate 150 against the heat receiving body 260 to fix it, efficient heat transfer from the light source substrate 150 to the heat receiving body 260 of the heat radiating unit 200 is possible.
Since the light source substrate 150 is fixed only by the resin reflector 120 and the stabilizer 160 and not by the metal component, it is possible to prevent a short circuit from the light source substrate 150 to the metal component.

Since the base 305 and the support 310 are made of metal, the base 305 and the support 310 can be securely fixed.
Since the ring 340, the support 310, the fall stopper 350, the screw 360, and the arm 580 are made of metal, it is possible to prevent the light source unit 100 and the heat radiating unit 200 from falling.
Since the metal support 310 is covered with resin parts and the creepage distance is secured, electric shock can be prevented.

Since the wiring material 430 is inserted through the wiring cylinder 410 attached stress-free instead of the main heat dissipation function, high quality electrical connection can be realized.
Further, since the wiring cylinder 410 is made of metal, the wiring material 430 can be protected from damage. Further, since only both ends of the wiring cylinder 410 are held only by the resin stabilizer 160 and the resin holder 390, the heat of the wiring cylinder 410 is difficult to transfer. Therefore, the wiring material 430 can be protected from high heat.
Further, since the wiring material 430 is not directly led out from the metal wiring cylinder 410 to the outside, but is led out to the outside from the resin stabilizer 160 and the resin holder 390, the coating of the wiring material 430 is covered. Will not be damaged.

Embodiment 2.
In this embodiment, the differences from the first embodiment will be described.

<Light source unit 100>
As shown in FIG. 19, the light source unit 100 may not have the reflector 120.
The cover stopper 130 presses the cover 110 to which the packing 113 is fitted against the light source substrate 150 and is screwed to the heat receiving body 260.
The light source substrate 150 is pressed against the heat receiving body 260 by the packing 113 and the stabilizer 160.

The lighting device 1000 of FIG. 19 includes a light source unit 100 having a light source substrate 150 and a cover 110 covering the light source substrate 150, and a heat receiving body 260 to which the light source unit 100 is fixed. The light source substrate 150 is fixed to the heat receiving body 260 in a state of being sandwiched between the cover 110 and the heat receiving body 260, and the light source substrate 150 is not fixed to the heat receiving body 260 by using a metal component, and is a metal component. It is fixed in a state of being separated from.
Further, the light source unit 100 includes a stabilizer 160, and the light source substrate 150 is fixed to the heat receiver 260 in a state of being sandwiched between the stabilizer 160 and the heat receiver 260.
The shape of the cover 110 may be a planar shape or a lens shape.

<Fall prevention mechanism 600>
As the fall prevention mechanism 600, the cover stopper 130 has a fall prevention clasp 618.
The clasp 618 is a U-shaped sheet metal, and the clasp 618 is a component that sandwiches the outer edge of the cover stopper 130 and the heat receiving body 260 and screws them together.

<Fixed part 500>
As shown in FIG. 20, each arm 580 of the four arms 580 may be provided with a 90-degree or acute-angled crease, or each arm 580 may be configured with a curved surface.
The arm 580 and the heat dissipation piece 275 may be manufactured from one sheet metal.
The number of arms 580 is not limited to four. It is desirable that there are 3 or more, and 5 or 6 or 8 may be used. However, as the number increases, the weight increases. If there are four, the strength can be maintained, so four is suitable.

<Connection part 300>
It is desirable to have both the ring 340 and the drop stopper 350, but there may be only the ring 340 or only the drop stopper 350.
The number of fall stoppers 350 is not limited to four. At least one is enough.
If the creepage distance can be sufficiently secured, the C-shaped wall receiving portion 315 and the C-shaped wall 397 may not be provided.
By increasing the radial thickness of the screw enclosure 324, the radial creepage distance can be increased.
By increasing the thickness of the board portion 391 in the central axis direction, the creepage distance in the height direction can be increased.
If the arm 580 can be securely fixed only by the board portion 391, the standing portion 392 may be omitted.
The four standing plates 381 of the standing portion 392 may be separated from each other in order to improve the air permeability. At that time, the pipe hole 393 in the center of the standing portion 392 can be omitted by positioning the wiring cylinder 410 on the central axis at the end face of the four standing plates 381 on the central axis side in the radial direction.
The wiring cylinder 410 may not be movably attached in both the radial direction and the central axis direction, and may be movably attached in either the radial direction or the central axis direction.

Embodiment 3.
In this embodiment, the differences from the first embodiment will be described.

<Lighting fixture 614>
21 and 22 are block diagrams of the luminaire 614 and the luminaire 1000.
As shown in FIG. 21, the luminaire 614 has a hanging tool 612, a socket 613, a through cylinder 615, and a shade 616.

<Structure of guide protrusion 710 and notch 711>
As shown in FIG. 23, the connection portion 300 has a base housing 301, a support 310 to which the base housing 301 is fixed, and a holder 390 to which the support 310 is attached to the fixing portion 500.
Although the drop stopper 350 described in the above-described embodiment does not exist in the connection portion 300, the drop stopper 350 may be provided.
Further, the connecting portion 300 has a lid portion 320 that covers the support 310. The lid portion 320 has a guide protrusion 710 on the outer periphery thereof.
Further, the connecting portion 300 has a ring 340 that covers the periphery of the lid portion 320. The ring 340 has a notch 711 fitted to the guide protrusion 710.

As shown in FIGS. 24A and 24B, the guide protrusion 710 is a straight rail formed on the outer peripheral surface of the small cylinder portion 321 from the ring arrangement surface 326 of the lid portion 320.
The guide protrusions 710 are provided at two locations in the diameter direction of the small cylinder portion 321.

As shown in FIG. 24 (c), the ring 340 has a notch 711.
The cutout portion 711 is a recess formed in the inner circumference of the ring 340.
The notch 711 is provided at two points in the diameter direction of the ring 340.
The length of the guide protrusion 710 is larger than the thickness of the ring 340 and longer than the height of the screw head of the screw 360 fixing the ring 340.

<Action of guide protrusion 710 and notch 711>
When the ring 340 is attached to the lid 320, the notch 711 is fitted into the guide protrusion 710 so that the ring 340 can be positioned in the rotational direction, and the four screw holes of the ring 340 and the lid 320 match. ..
Further, the guide protrusion 710 is used for positioning when crimping the base housing 301 with the caulking device. Since the guide protrusion 710 extends in the axial direction from the ring 340 while the ring 340 is attached to the lid portion 320, the guide protrusion 710 can be used to position the ring 340 in the rotational direction, and the caulking position and caulking position can be performed. The position with the pin can be matched.
As described above, the guide protrusion 710 functions as a guide for the ring 340 when the ring 340 is mounted, and functions as a caulking position guide to the caulking device when the cap housing 301 is crimped.

<Crimping structure of recessed part 720 and convex part 730>
As shown in FIGS. 23 and 24, the lid portion 320 has a recessed portion 720.
The recessed portion 720 is a recessed portion provided at the base of the joint portion 311 of the support 310.
The recessed portion 720 provides a recessed space recessed in the central axial direction from the outer peripheral surface of the joint portion 311 of the support 310.
The recessed portions 720 are provided at four locations around the joint portion 311 of the support 310 at equal intervals.

In FIG. 25, the meanings of the symbols are as follows.
The positions P1, P2, P3, and P4 are the positions where the recessed portion 720 is formed.
The broken line C is a straight line passing through the diameter connecting the centers of the bottom walls 721 of the facing recesses 720.
The broken line R is a straight line parallel to the broken line C passing through one end of the bottom wall 721.
The broken line C is a straight line parallel to the broken line C passing through the other end of the bottom wall 721.
The distance between the broken line C and the broken line R is equal to the distance between the broken line C and the broken line L.
The broken line K is a contact line between the two molds for manufacturing the support 310.
The broken line M1 is a straight line connecting the left wall of the recessed portion 720 at the position P1 and the right wall of the recessed portion 720 at the position P4.
The broken line M2 is a straight line connecting the right wall of the recessed portion 720 at the position P2 and the left wall of the recessed portion 720 at the position P3.
The broken line M1 and the broken line M2 are parallel.
The direction of the arrow H1 is the mounting direction in which the base 305 is screwed into the socket 613. The mounting orientation is the orientation in the rotation direction in which the base 305 is fastened to the socket 613 and the lighting device 1000 is mounted on the lighting fixture 614.
The direction of the arrow H2 is the removal direction in which the base 305 is removed from the socket 613. The removal direction is the direction of rotation in which the base 305 is loosened from the socket 613 and the lighting device 1000 is removed from the lighting fixture 614.
The mounting direction (direction of arrow H1) and the removing direction (direction of arrow H2) are opposite directions in the rotation direction.
The angle θ1 is an angle formed by the broken line C and the broken line K, and is 45 degrees in the present embodiment.
The angle α is the angle at which the broken line C (and the broken line R and the broken line L) intersects one of the left and right walls.

As shown in FIG. 25, the recessed portion 720 has a bottom wall 721, and has a left wall 723 and a right wall 722 in the left-right direction in which the base 305 rotates.
The bottom wall 721 is a bottom surface formed in the deep bottom of the recessed portion 720.
The right wall 722 is a right surface formed to the right of the bottom wall 721.
The left wall 723 is a left surface formed to the left of the bottom wall 721.

As shown in FIG. 25, a plurality of recessed portions 720 exist at intervals of 90 degrees.
In the recessed portion 720 at the position P1 and the position P3, the angle α formed by the radial direction passing through the center of the bottom wall 721 of the recessed portion 720 and the left wall 723 is the center of the bottom wall 721 of the recessed portion 720 of the right wall 722. It is larger than the angle (0 degrees in the figure) with the diameter direction through which it passes.
In the recessed portion 720 at the position P2 and the position P4, the angle α formed by the radial direction passing through the center of the bottom wall 721 of the recessed portion 720 and the right wall 722 is the center of the bottom wall 721 of the recessed portion 720 of the left wall 723. It is larger than the angle (0 degrees in the figure) with the diameter direction through which it passes.
As described above, the recessed portion 720 is formed asymmetrically with respect to the radial direction. That is, the left wall 723 and the right wall 722 of the recessed portion 720 have different angles formed in the radial direction through the center of the bottom wall 721 of the recessed portion 720.
One wall of the recess 720 is a surface parallel to the radial direction, and the other surface is a surface that intersects the radial direction at an acute angle.
The recessed portion 720 has a removal recessed portion 720 in which the left wall 723 has a larger radial angle than the right wall 722, and a mounting recessed portion in which the right wall 722 has a larger radial angle than the left wall 723. There are two types, 720.

<Angle α>
The support 310 is manufactured using, for example, two molds coupled along the dashed line K. In this case, the angle α is preferably 45 degrees or 45 degrees or more and 47 degrees or less. If the angle α is less than 45 degrees, the two bonded molds cannot be separated, but if the angle α is 45 degrees or more, the two combined molds can be easily separated.
FIG. 25 shows a case where the angle α is 45 degrees, and the two molds can be peeled off along the direction parallel to the straight line M1 and the straight line M2 in FIG. 25.
In order to firmly hook the recessed portion 720 and the convex portion 730, it is desirable that the angle α is 45 degrees.
When the support 310 is not manufactured using the above-mentioned two molds, the angle α does not have to be 45 degrees or more, and the angle α is preferably close to 0 degrees.
It should be noted that one wall of the recessed portion 720 does not have to be a surface parallel to the diametrical direction, but if the surface is parallel to the diametrical direction, the concave portion 720 and the convex portion 730 are well abutted against each other.

As shown in FIG. 26, the recessed portion 720 has a lower wall 724 and an upper wall 725 in the axial direction.
The lower wall 724 is a lower surface formed at the lower end of the recessed portion 720.
The upper wall 725 is an upper surface formed at the upper end of the recessed portion 720.
As described above, the recessed portion 720 is a box-shaped recess formed by the bottom wall 721, the right wall 722, the left wall 723, the lower wall 724, and the upper wall 725.
The horizontal cross-sectional shape of the recessed portion 720 is a trapezoidal shape, one having a base angle of 90 degrees and the other having a base angle of 90-α degrees.
The vertical cross-sectional shape of the recessed portion 720 is U-shaped.

<Caulking method>
A method of crimping the base housing 301 to the support 310 will be described.
First, the base housing 301 and the support 310 are attached to the caulking device.
As shown in FIGS. 25 (a) and 26 (a), the caulking device includes a pair of caulking pins 740 that push the cap housing 301 from the outside to the inside in the radial direction.
When the support 310 is attached to the caulking device, the support 310 is attached to the caulking device by using the guide protrusion 710 described above as a positioning key.
Since the guide protrusion 710 is formed on the lid portion 320 at the same position as the position P1 and the position P3, if the guide protrusion 710 is mounted at the same position as the caulking pin 740, the position of the caulking pin 740 is the recessed portion 720. Matches the position of.
The caulking pin 740 pushes the base housing 301 toward the central axis O along the broken line C. The base housing 301 is deformed by the pressure of the caulking pin 740, and convex portions 730 are formed at the positions P1 and P3 as shown in FIGS. 25 (b) and 26 (b).
Further, the same operation is performed for the position P2 and the position P4 rotated by 90 degrees, and the convex portion 730 is formed at the position P2 and the position P4.

<Horizontal cross-sectional shape of convex portion 730>
As shown in FIG. 25 (b), the tip portion of the caulking pin 740 has a symmetrical shape, and the deepest portion of the convex portion 730 is formed on the line of the broken line C.
However, even if the tip of the caulking pin 740 has a symmetrical shape, the base housing 301 is asymmetrically dented because the right wall 722 and the left wall 723 are asymmetric.
At positions P1 and P3, the right surface of the convex portion 730 is formed substantially in the radial direction along the right wall 722, and the left surface of the convex portion 730 is formed so as to be inclined along the left wall 723.
On the other hand, at positions P2 and P4, the left surface of the convex portion 730 is formed substantially in the radial direction along the left wall 723, and the left surface of the convex portion 730 is formed so as to be inclined along the right wall 722.
The horizontal cross-sectional shape of the convex portion 730 is a U-shaped or a U-shaped.

<Vertical cross-sectional shape of convex portion 730>
As shown in FIG. 26 (b), the tip of the caulking pin 740 pushes the lower part of the base housing 301, so that the convex portion 730 of the base housing 301 approaches the bottom wall 721 as the lower end approaches. Since the upper surface of the convex portion 730 abuts on the upper wall 725 of the recessed portion 720, the support 310 does not fall down from the base housing 301. As the upper surface of the convex portion 730 is made as horizontal as possible, the area where the upper surface of the convex portion 730 touches the upper wall 725 increases, so that it can be prevented from falling off.
Further, since the lower end surface of the convex portion 730 abuts on the lower wall 724 of the recessed portion 720, the base housing 301 does not move downward with respect to the support 310.
The vertical cross-sectional shape of the convex portion 730 is an inclined shape or a curved shape so as to decrease the radius from the top to the bottom.

<Action and effect of the concave portion 720 and the convex portion 730>
By caulking, the cylindrical base housing 301 will have a convex portion 730 protruding inward. Then, the recessed portion 720 of the base housing 301 accommodates the convex portion 730 of the base housing 301.
Since the recessed portion 720 at the position P2 and the position P4 has a left wall 723 abutted against the convex portion 730, the rotation of the support 310 when the support 310 rotates in the mounting direction (direction of arrow H1). The force can be reliably transmitted to the base housing 301. The recessed portion 720 at positions P2 and P4 is a recessed portion 720 for mounting.
Since the recessed portion 720 at the position P1 and the position P3 has the right wall 722 abutted against the convex portion 730, the rotation of the support 310 when the support 310 rotates in the removal direction (direction of arrow H2). The force can be reliably transmitted to the base housing 301. The recessed portion 720 at positions P1 and P3 is a recessed portion 720 for removal.
Therefore, regardless of whether the support 310 is rotated in either the positive direction (direction of arrow H1), which is the mounting direction (direction of arrow H1), or the opposite direction, which is the removal direction (direction of arrow H2), the support 310 and the base housing. The 301 does not slip.
The lighting device 1000 is attached and detached by the operator by rotating the light source unit 100 having a diameter dimension significantly larger than the diameter dimension of the base 305. Therefore, a large torque is generated in the rotation direction between the support 310 and the base housing 301. However, when the support 310 rotates in the mounting direction (direction of arrow H1), the left wall 723 of position P2 and position P4 forms a surface where the mounting direction (direction of arrow H1) intersects at 90 degrees. Therefore, the left wall 723 can surely push the left surface of the convex portion 730. Further, when the support 310 rotates in the removal direction (direction of arrow H2), the right wall 722 of the position P1 and the position P3 forms a surface where the right wall 722 intersects the removal direction (direction of arrow H2) at 90 degrees. Therefore, the right wall 722 can surely push the right surface of the convex portion 730.
As described above, since the recessed portion 720 has an asymmetric structure, the support 310 and the base housing 301 are securely fixed, and the base housing 301 does not slip around the metal support 310, and the support body is supported. It is possible to prevent the support 310 from slipping inside the base housing 301 and spinning the support 310.
Further, since the upper surface of the convex portion 730 hits the upper wall 725 of the recessed portion 720, the support 310 does not fall down from the base housing 301.
Further, since the lower end surface of the convex portion 730 hits the lower wall 724 of the recessed portion 720, the base housing 301 does not go down.
Since there are two mounting recesses 720 in the 180-degree direction, the rotational force for mounting can be reliably transmitted to the base 305.
Since there are two removal recesses 720 in the 180-degree direction, the rotational force for removal can be reliably transmitted to the base 305.

<Other examples of recess 720>
The number of mounting recesses 720 may not be two, but may be three or more, or may be one.
The number of the removable recesses 720 may not be two, but may be three or more, or may be one.
The number of mounting recesses 720 and the number of removal recesses 720 do not have to be the same.
At least one mounting recess 720 and one removing recess 720 may be required.

<Other examples of caulking structure>
27 and 28 show other examples of caulking structures.
As shown in FIG. 27, the connection portion 300 has a cylindrical base housing 301.
Further, the connection portion 300 has a support portion 310 screwed into the base housing 301, and has a lid portion 320 that covers the support portion 310.

The support 310 has a joint portion 311 screwed into the base housing 301.
The Rago portion 311 has an arrangement portion 762 for arranging the storage portion 752.
The arranging portion 762 is a wide groove formed over the entire upper and lower sides of the matching portion 311.
There are two arrangement portions 762 in the radial direction.
The distance between the left and right outer walls of the storage portion 752 is the same as the distance between the left and right inner walls of the arrangement portion 762.
The Rago portion 311 has a presser foot portion 761 in which the presser foot portion 751 is arranged.

The base housing 301 is formed with a convex portion 730 protruding inward by caulking, and the lid portion 320 has a storage portion 752 for accommodating the convex portion 730.

The lid portion 320 has an arc-shaped pressing portion 751 protruding inward of the small cylinder portion 321 at the upper end portion of the small cylinder portion 321.
There are two pressing portions 751 in the radial direction.

The lid portion 320 has a chair-shaped storage portion 752 protruding inward of the small cylinder portion 321 at the upper end portion of the small cylinder portion 321.
The lid portion 320 forms a recessed portion 720 by the bottom wall, the left wall, the right wall, and the lower wall.
The lid 320 has no upper wall.
There are two storage portions 752 in the radial direction.

The presser foot portion 761 has a plane formed over the entire vertical direction of the joint portion 311 and an arcuate surface orthogonal to the plane. The shape of the arcuate surface is the same as the arcuate shape protruding inward of the holding portion 751.
There are two presser foot portions 761 in the radial direction.

The arranging portion 762 has a positioning portion 763 that determines the position of the lid portion 320 in the rotational direction.
The positioning portion 763 is a linear groove dented from the center of the bottom surface of the arranging portion 762 toward the central axis O.
The storage portion 752 has a protrusion 753 fitted to the positioning portion 763.
The protrusion 753 is a convex portion protruding from the center of the inner surface of the storage portion 752 toward the central axis O.

<Material>
The base housing 301 is made of metal with a nickel-plated brass surface.
The support 310 is made of aluminum.
The lid portion 320 is made of resin.
If the base housing 301 and the support 310, both of which are made of different metals, continue to come into contact with each other by caulking, the support 310 may be corroded due to aging. Therefore, instead of crimping the metal against the metal, it is possible to crimp the metal base housing 301 to the resin lid 320. Since the metal base housing 301 and the metal support 310 do not come into direct contact with each other, corrosion due to contact between dissimilar metals can be prevented.

<Manufacturing method>
While fitting the protrusion 753 into the positioning portion 763, the gathering portion 311 of the support 310 is inserted into the lid hole 322 of the lid portion 320 until the pressing portion 751 hits the pressing portion 761.
Then, the base housing 301 is put on the joint portion 311, the position of the storage portion 752 and the position of the caulking pin are matched, and the captive housing 301 is attached to the caulking device.
The convex portion 730 formed by caulking the base housing 301 is housed in the recessed portion 720 of the storage portion 752.

<Action>
The convex portion 730 is restricted from rotating to the left and right by the left and right walls of the recessed portion 720 of the storage portion 752, and is restricted from moving downward by the lower wall.
Further, the left and right outer walls of the storage portion 752 are fitted into the left and right inner walls of the arrangement portion 762, and the support 310 does not rotate to the left or right with respect to the lid portion 320.
Further, since the flat surface of the presser foot portion 761 and the straight line portion of the presser foot portion 751 coincide with each other and the support portion 310 and the lid portion 320 are screwed together, the support body 310 moves to the left and right with respect to the lid portion 320. It does not rotate.
The storage portion 752 does not have an upper wall, but since the joint portion 311 is screwed into the base housing 301, the base housing 301 does not move upward with respect to the support 310.

<Examples of other materials>
The material of the support 310 is not limited to aluminum (including alloys), and may be made of a material other than the resin material.
The material of the support 310 may be copper, stainless steel, iron, tin, titanium, magnesium, other metals, or alloys containing these.
Alternatively, it may be made of ceramic, glass, paper, or wood.
The combination of suitable materials for the support 310 and the lid 320 will be described below.
Material of support 310 Material of lid 320 (1) Metal resin (2) Ceramic resin (3) Ceramic metal Since the support 310 is a member at the center of each part of the connection part 300, it looks like metal or ceramic. It is desirable to use a material that does not deteriorate more than resin.
If the dissimilar metals are in contact with each other for a long period of time, corrosion may occur between the dissimilar metals. Therefore, it is desirable that the material of the support 310 and the lid 320 is not a dissimilar metal.
The support 310 and the lid 320 may be manufactured as one component using a resin material.

<Fall prevention mechanism by bag nut 771>
As shown in FIG. 29, the light source unit 100 has a cover 110 and a cover stopper 130, the heat radiation unit 200 has a heat receiving body 260 to which the light source unit 100 is fixed, and the screw 115 receives heat from the cover stopper 130. It is fixed to the body 260.
The fall prevention mechanism of FIG. 29 includes a light source unit 100 and a heat radiation unit 200 in which the light source unit 100 is fixed by a screw 115, and a bath nut 771 is attached to the screw 115.
As shown in FIG. 29 (a), it is preferable to provide a bag nut 771 at the tip of the screw 115 in order to prevent the light source unit 100 from falling.
Further, as shown in FIG. 29 (b), it is preferable that the nut 772 is attached to the screw 115, and the bag nut 771 is further provided at the tip of the screw 115.

<Fall prevention mechanism by arm 580>
FIG. 30A shows a case where the arm 580 and the heat radiating piece 275 are one component.
The arm 580 integrates an adjacent heat radiation piece 275 with the end of the connection plate portion 583.
The arm 580 has a basic plate portion 581 arranged between the heat receiving body 260 and the connecting portion 300.
The connection plate portion 583 fixed to the connection portion 300 is directed from one end of the basic plate portion 581 toward the removal direction (direction of arrow H2) for removing the base housing 301 from the socket 613.
The heat receiving plate portion 582 fixed to the heat receiving body 260 is directed from the other end of the basic plate portion 581 toward the removal direction (direction of arrow H2) for removing the base housing 301 from the socket 613.
The reinforcing plate portion 584 existing in the longitudinal direction of the basic plate portion 581 is directed from the side end portion of the basic plate portion 581 toward the removal direction (direction of arrow H2) for removing the base housing 301 from the socket 613.

<Action of arm 580>
The plurality of arms 580 are arranged radially, and the basic plate portion 581 is arranged in the radial direction. When vibration in the direction in which the lighting device 1000 rotates is applied to the lighting device 1000, the plurality of arms 580 are twisted with the base 305 as a base point.
When the arm 580 is twisted in one direction about the central axis O, the rigidity or elasticity of the arm 580 causes the arm 580 to return in the opposite direction. On the contrary, when the arm 580 is twisted in the other direction about the central axis O, the arm 580 returns to the opposite direction due to the rigidity or elasticity of the arm 580. Therefore, when vibration is applied to the lighting device 1000, the base 305 screwed into the socket 613 may loosen.

Since the heat receiving plate portion 582, the connecting plate portion 583, and the reinforcing plate portion 584 are bent in the removal direction (direction of arrow H2) in the arm 580, the rigidity or elasticity of the arm 580 is in one direction and in the other direction. It depends on the orientation.
One of the arms 580 is formed by bending the heat receiving plate portion 582, the connecting plate portion 583, and the reinforcing plate portion 584 toward the removal direction (direction of arrow H2), which is the direction opposite to the screwing direction of the base 305. When torque of the same strength is applied to the direction of and the other direction, the rotational force in the mounting direction (direction of arrow H1) is larger than the rotational force in the removing direction (direction of arrow H2). That is, the heat receiving plate portion 582, the connecting plate portion 583, and the reinforcing plate portion 584 are bent toward the removal direction (direction of arrow H2), so that the lighting device 1000 vibrates in the direction in which the lighting device 1000 rotates with respect to the lighting device 1000. Is added, the base 305 is screwed into and tightened with respect to the socket 613. When the end of the arm 580 is bent in the removal direction (direction of arrow H2), which is the direction opposite to the screwing direction of the base 305, and the lighting device 1000 is vibrated in the rotating direction. It is screwed in and is oriented toward tightening.
On the contrary, when the heat receiving plate portion 582, the connecting plate portion 583, and the reinforcing plate portion 584 are bent toward the mounting direction (direction of arrow H1), the base 305 screwed into the socket 613 is gradually loosened. When the end of the arm 580 is bent toward the mounting direction (direction of arrow H1) which is the screwing direction of the base 305, the socket 613 is vibrated in the direction in which the lighting device 1000 rotates. The screwed base 305 gradually loosens.

<Other examples of arm 580>
It is desirable that all of the heat receiving plate portion 582, the connecting plate portion 583, the reinforcing plate portion 584, and the end portion of the arm 580 are bent toward the removal direction (direction of arrow H2), but the heat receiving plate portion 582 and the connecting plate portion 582. Only the portion 583 and the portion 583 may be bent in the removal direction (direction of arrow H2).
When vibration in the direction in which the lighting device 1000 rotates is applied to the lighting device 1000, the base 305 is preferably tightened to the socket 613, but in order to relax the tightening strength and prevent overtightening, a reinforcing plate is used. The rigidity or elasticity of the arm 580 may be changed by changing the size and shape of the portion 584. Alternatively, the reinforcing plate portion 584 may not be present in the arm 580, or among the plurality of arms 580, there may be an arm 580 without the reinforcing plate portion 584.
As shown in FIG. 9, the arm 580 may be an arm 580 without the heat radiating piece 275, or may be an arm 580 without the heat radiating piece 275, or may be integrated with the heat radiating piece 275 as shown in FIG. 30.

<Product label 780>
As shown in FIG. 30A, the product label 780 is attached to the arm 580.
The product label 780 is a rectangular sticker, and product information such as a product name, a manufacturer, a manufacturing date, and rating information is displayed.
It is desirable that the product label 780 is affixed to the basic plate portion 581 of the arm 580. Since the basic plate portion 581 is flat, the product label 780 can be easily attached and the product label 780 cannot be easily peeled off.
It is desirable that the product label 780 is attached to the extension portion 587 of the basic plate portion 581 away from the heat receiving body 260 so as not to be covered by the heat radiating plate 271 and to prevent the heat radiating effect from being hindered.
The product label 780 is preferably affixed to the flat portion between the two screw holes 590 of the extension 587. The flat portion between the two screw holes 590 of the extension portion 587 is not distorted because the opposite side is fixed by the vertical portion 392 of the holder 390.

As shown in FIG. 30 (b), the product label 780 may be affixed to the flat surface portion of the vertical portion 392 of the holder 390 of the connection portion 300. The space between the two screw holes 398 of the vertical portion 392 is a flat surface, is not covered by the heat radiating plate 271, and does not interfere with the heat radiating effect.

<Effect>
Since the product label 780 is attached to the flat surface portion, the work of attaching the product label 780 is easier than when it is attached to the curved surface portion, the product label 780 is not distorted and is hard to be peeled off, and the product label 780 is not easily peeled off. There is an effect that it is easy to see because the display of is not distorted.

In addition, instead of the method of attaching the product label 780, the product information such as the product name, the manufacturer, the date of manufacture, and the rating information is sent between the two screw holes 590 of the extension portion 587 or the two screws of the vertical portion 392. It may be displayed by printing or engraving directly on the portion between the holes 398.

As described above, in the lighting device 1000 according to the embodiment of the present invention, a part of the heat radiating unit 200 integrally formed with the heat receiving body 260 that receives the operating heat generated from the light source element 140 is used as an arm 580, and the arm 580 is used as an arm 580. And the connection portion 300 are fastened to each other, and while being lightweight and simple, they have sufficient heat dissipation and vibration resistance.
Further, since the luminaire 1000 according to the embodiment of the present invention includes the luminaire 1 in consideration of the external dimensions and the load-bearing performance of the luminaire for the HID lamp which has been conventionally used, the luminaire for the HID lamp is provided. And the luminaire 1 can be used in combination. That is, the luminaire 1 is suitable for low-cost renewal construction utilizing existing luminaires.

Although the first to third embodiments of the present invention have been described above, the embodiments may be combined and carried out. Alternatively, one of these embodiments may be partially implemented. Alternatively, these embodiments may be partially combined and implemented. The present invention is not limited to these embodiments, and various modifications can be made as needed.

For example, in the above embodiment, the light source unit 100 has described an embodiment using a packaged surface mount type (SMD type) LED element, but the present invention is not limited to this. The light source unit 100 is a COB (Chip On Board) type light source unit 100 in which a plurality of LED chips are directly mounted on a substrate and the plurality of LED chips are collectively sealed with a phosphor-containing resin. May be good.

Further, in the above embodiment, the light source unit 100 is configured to emit white light by the blue LED chip and the yellow phosphor, but the present invention is not limited to this. For example, a phosphor-containing resin containing a red phosphor and a green phosphor may be used and combined with a blue LED chip to emit white light. Further, an LED chip that emits a color other than blue may be used. For example, an ultraviolet LED chip that emits ultraviolet light having a shorter wavelength than the blue light emitted by the blue LED chip is used, mainly by ultraviolet light. It may be configured to emit white light by a blue phosphor particle, a green phosphor particle and a red phosphor particle which are excited and emit blue light, red light and green light.

Then, in the above-described embodiment, the LED is exemplified as the light emitting element, but a light emitting element such as a solid state laser (Solid State Laser), a semiconductor laser (Semiconductor Laser), an organic EL (Electroluminescence), or an inorganic EL is used. You may.
The number of light emitting elements is not limited to a plurality, and may be one.

Further, the material of the cover 110 is not limited to the resin, but may be a glass material. Further, since it is sufficient that at least a part of the cover 110 has a translucent region capable of emitting light, the material of the region capable of emitting light may be a translucent resin and the material of the region not emitting light may be a white highly reflective resin. good.

In the above embodiment, the luminaire 1 does not include a power supply device (lighting device) that generates lighting power for lighting the light source element 140, and receives lighting power from a power supply device installed outside the luminaire 1. The embodiment is not limited to this, and the illuminating tool 1 may be provided with a power supply device (lighting device) for generating lighting power.

Embodiment 4.
In this embodiment, points different from the above-described embodiment will be described.
In this embodiment, the lighting device 1000 having the fixture shade 800 will be described.
In this embodiment, the central axis O means the central axis of the lighting device 1000.
Further, the upper part means the side where the attached portion to which the lighting device 1000 is attached is located.
Further, the bottom means the irradiation direction of the light of the lighting device 1000.
Further, the height means the length in the central axis O direction from the bottom to the top.

*** Explanation of configuration ***
31, FIG. 32, FIG. 33, and FIG. 34 are a perspective view, a side view, a bottom view, and a plan view of the lighting device 1000, respectively.
35 and 36 are exploded perspective views of the lighting device 1000, respectively.
37 and 38 are cross-sectional views taken through the central axis of the illuminating device 1000.

<Lighting device 1000>
The lighting device 1000 includes a light source unit 100, a heat radiating unit 200, an instrument shade 800, and a hanging unit 900.
The heat radiating portion 200 fixes the light source portion 100 at one end and the hanging portion 900 at the other end.
The heat radiation unit 200 is arranged between the light source unit 100 and the suspension unit 900.
The instrument cap 800 is fixed to the heat radiating section 200 and covers the heat radiating section 200.
The instrument cap 800 is fixed only to the heat radiating portion 200, and is not in contact with any portion other than the heat radiating portion 200.

<Light source unit 100>
The light source unit 100 has a disk shape as a whole.
The light source unit 100 has a light source substrate 150 on which a light source element 140 is mounted.
The light source unit 100 has a transparent or translucent cover 110.
The cover 110 covers the entire light source substrate 150.

<Dissipating unit 200>
The heat radiating unit 200 has a heat receiving body 260 to which the light source unit 100 is fixed.
The heat radiating portion 200 has a plurality of arms 580 fixed to the heat receiving body 260 and the suspending portion 900.
The heat radiating unit 200 has a plurality of heat radiating pieces 270 fixed to the heat receiving body 260.
The plurality of arms 580 and the plurality of heat sink pieces 270 are a plurality of heat sinks arranged radially from the central axis O.
In this embodiment, four arms 580 are arranged radially from the central axis O at intervals of 90 degrees.
The heat receiving body 260, the arm 580, and the heat radiating piece 270 of the heat radiating unit 200 are made of metal in order to improve the heat radiating property, and aluminum is preferable.

<Arm 580>
The arm 580 will be described with reference to FIG. 39.
The arms 580 are arranged radially from the central axis O.
The arm 580 is a fin bracket that serves as a heat radiation fin and also serves as a bracket for fixing the light source portion 100 and the suspension portion 900.
The arm 580 has a basic plate portion 581 arranged between the heat receiving body 260 and the suspension portion 900.
The arm 580 has a connection plate portion 583 that is orthogonal to the basic plate portion 581 and is fixed to the suspension portion 900.
The connection plate portion 583 is arranged orthogonal to the central axis O.
The arm 580 has a heat receiving plate portion 582 orthogonal to the basic plate portion 581 and fixed to the heat receiving body 260.
The heat receiving plate portion 582 is arranged orthogonal to the central axis O.
The arm 580 has a reinforcing plate portion 584 that is orthogonal to the basic plate portion 581 and reinforces the basic plate portion 581.
The reinforcing plate portion 584 is arranged in parallel with the central axis O.
The arm 580 is orthogonal to the basic plate portion 581 and has a cap attachment portion 591 for fixing the instrument cap 800.
The shade attachment portion 591 is arranged orthogonal to the central axis O.

The basic plate portion 581 is arranged in the radial direction.
The basic plate portion 581 has a vertical side parallel to the central axis, and a bottom side and an upper side orthogonal to the vertical side. The bottom of the basic plate 581 is longer than the top.
A reinforcing plate portion 584 is formed on the entire vertical side of the basic plate portion 581.
A heat receiving plate portion 582 is formed on the entire bottom of the basic plate portion 581.
A connection plate portion 583 is formed on the entire upper side of the basic plate portion 581.
The outer side of the basic plate portion 581 is inclined from the bottom side to the upper side. There is a step in the middle of the outer side.
A shade mounting portion 591 is formed on the step of the basic plate portion 581.
The heat receiving plate portion 582, the connecting plate portion 583, the reinforcing plate portion 584, and the shade mounting portion 591 are all bent 90 degrees in the same direction with respect to the basic plate portion 581.
The reinforcing plate portion 584 is arranged orthogonal to the radial direction.
The heat receiving plate portion 582, the connecting plate portion 583, and the shade mounting portion 591 are arranged in parallel, and when the lighting device 1000 is mounted on the ceiling, the heat receiving plate portion 582, the connecting plate portion 583, and the shade mounting portion 591 are in the horizontal direction. Is placed in.

All the formed screw holes of the arm 580 have a cylindrical screw boss formed by burring. A screw hole is formed in the center of the screw boss, and the screw hole is threaded.

<Fixed structure of hanging part 900 and heat radiating part 200>
A fixed structure of the suspension portion 900 and the heat radiating portion 200 will be described with reference to FIG. 39.
The hanging portion 900 has a fixed seat 916 for fixing the heat radiating portion 200.
The fixed seat 916 is a pedestal raised from the back surface of the lid flange 910.
There are four fixed seats 916, which are arranged radially from the central axis O at intervals of 90 degrees.
The thickness of the fixed seat 916 is thicker than the thickness of the board portion 911.
The surface of the fixed seat 916 has almost the same shape as the connection plate portion 583 of the arm 580.
The fixed seat 916 has a screw hole 919 and a protrusion 983.

The heat radiation unit 200 has a connection plate unit 583 corresponding to the fixed seat 916.
The connection plate portion 583 has a screw hole 589 and a protrusion receiving portion 957.
The fixed seat 916 and the connecting plate portion 583 have substantially the same shape, and the screw hole 919 and the screw hole 589 communicate with each other.
The protrusion 983 is a convex portion, the protrusion receiving portion 957 is a concave portion, and the protrusion 983 is fitted in the protrusion receiving portion 957.
The screw 903 is passed through the screw hole 919 and the screw hole 589, the fixing seat 916 and the connection plate portion 583 are screwed together, and the heat radiating portion 200 and the hanging portion 900 are fixed.
The connecting plate portion 583 may have a protrusion 983, and the fixed seat 916 may have a protrusion receiving portion 957.

<Cap mounting part 591>
The shade mounting portion 591 is orthogonal to the basic plate portion 581 forming the arm 580, and is orthogonal to the central axis O.
The shade mounting portion 591 is a flat plate formed by bending from the basic plate portion 581.
A screw hole 593 is formed in the center of the cap mounting portion 591.
The shade mounting portion 591 is formed on the outer periphery of the basic plate portion 581 between the heat receiving plate portion 582 and the connecting plate portion 583.
The shade mounting portion 591 is formed between the heat receiving plate portion 582 and the connecting plate portion 583, closer to the connecting plate portion 583.
In the height direction of the arm 580, the ratio of the height T1 from the cap mounting portion 591 to the heat receiving plate portion 582 and the height T2 from the cap mounting portion 591 to the connecting plate portion 583 is 3: 1 or about 3: 1. be.

The shade mounting portion 591 and the connecting plate portion 583 are in a positional relationship between the upper and lower steps of the stairs, and provide a stepped structure.
In the step structure, the cap mounting portion 591 and the connecting plate portion 583 are formed in a staggered manner, the hanging portion 900 and the instrument cap 800 are fixed at different heights, and the height is set between the suspension portion 900 and the instrument cap 800. A structure that forms a heat dissipation space with a height T2 in the vertical direction.

As for the length of the arm 580 in the radial direction, the length from the cap mounting portion 591 to the connecting plate portion 583 is longer than the length of the cap mounting portion 591 than the length from the cap mounting portion 591 to the heat receiving plate portion 582. ing. In other words, at the arrangement position of the cap mounting portion 591, the arm 580 forms a step in which the radial length of the basic plate portion 581 is changed by the radial length of the cap mounting portion 591.

<Dissipation space>
The height of the heat radiating piece 270 is lower than the height of the shade mounting portion 591. Therefore, a heat dissipation space is formed between the sky above the heat dissipation piece 270 and the upper surface opening 810.
Further, a heat dissipation space is formed between the radial outside of the heat dissipation piece 270 and the shade portion 830.
From the side view, only the upper third of the four arms 580 from the shade attachment portion 591 to the connection plate portion 583 exists between the instrument shade 800 and the suspension portion 900.
A heat dissipation space having a height T2 is formed between the appliance cap 800 and the suspension portion 900 to allow the hot air rising from the heat dissipation portion 200 to escape.

<Instrument shade 800>
The instrument cap 800 will be described with reference to FIG. 39.
The instrument cap 800 has a cylindrical shape. In this embodiment, the instrument cap 800 has a truncated cone shape.
The instrument cap 800 has openings on the top and bottom.
The instrument cap 800 has an upper surface opening 810 having an opening formed in the center in the upper surface portion.
The instrument cap 800 has a bottom opening 820 having an opening in the center at the bottom portion.
The instrument cap 800 has a cap 830 between the top opening 810 and the bottom opening 820.
The upper surface opening portion 810 is an annular portion protruding from the upper end of the cap portion 830 in the shape of an eave in the direction of the central axis.
The bottom opening 820 is an annular portion that is bent outward at the lower end of the cap portion 830 or radially outward.
The instrument cap 800 has a cap fixing portion 840 fixed to the cap mounting portion 591.
The cap fixing portions 840 are formed at four locations at 90 degree intervals in the upper surface opening portion 810.
A specific example of the cap fixing portion 840 is a screw fixing portion formed in the upper surface opening 810, and has a screw hole in the center.

<Fixed structure of instrument shade 800>
As shown in FIG. 40, the instrument cap 800 is attached to the cap mounting portion 591 by screwing the cap fixing portion 840 of the upper surface opening 810 to the cap mounting portion 591 of the arm 580 with the cap screw 801. ..
Since the upper surface opening 810 and the cap mounting portion 591 are horizontal planes, the four cap fixing portions 840 are placed in a state where the lower surface of the upper surface opening 810 of the upper surface appliance cap 800 is in surface contact with the upper surface of the cap mounting portion 591. It can be screwed to four cap mounting portions 591.
The instrument cap 800 is fixed only to the cap attachment portion 591 of the four arms 580, is not attached to other parts, and is not in contact with other parts.

<Dimensions>
The dimensional relationship will be described with reference to FIGS. 32, 33, and 34.
The opening diameter W2 of the upper surface opening 810 of the fixture cap 800 is equal to or larger than the maximum outer diameter W1 of the hanging portion 900, and smaller than the maximum outer diameter W3 of the light source portion 100 and the heat radiating portion 200.
The opening diameter W2 of the upper surface opening 810 of the instrument cap 800 is equal to or larger than the outer diameter of the lid flange 910 and equal to or larger than the outer diameter of the mounting flange 930.
Further, the opening diameter W4 of the bottom opening 820 of the fixture cap 800 is equal to or larger than the maximum outer diameter W1 of the hanging portion 900, and is larger than the maximum outer diameter W3 of the light source portion 100 and the heat radiating portion 200.
32, 33, and 34 show the case of W1 <W2 <W3 <W4.
In the case of W1 <W2, as shown in FIG. 34, since a gap S is generated between the upper surface opening 810 and the suspension portion 900 in a plan view, dust may infiltrate through the gap S.
When W1 = W2, a gap S1 is generated in the vertical direction, but a gap S is not generated in the radial direction, so that intrusion due to falling dust can be suppressed.
Since the opening diameter W2 of the upper surface opening 810 of the instrument cap 800 is smaller than the maximum outer diameter W3 of the heat radiating portion 200, even if the cap screw 801 for fixing the instrument cap 800 is removed, the upper surface opening 810 is in the middle of the heat radiating portion 200. The fixture cap 800 does not fall from the heat radiating portion 200 because it is caught in the heat radiating portion 200.

<Fall prevention structure of light source unit 100>
The fall prevention structure of the light source unit 100 will be described with reference to FIGS. 41 and 42.
In the lighting device 1000, the cover 110 is clipped to the heat receiving body 260 by the clip 950 to prevent the light source unit 100 from falling.

<Cover 110>
FIG. 41A is an enlarged cross-sectional view taken along the line C of FIG. 38.
The cover 110 will be described with reference to FIG. 41.
The light source unit 100 has a cover 110.
The cover 110 is made of a transparent or translucent resin.
The cover 110 has a translucent portion 980 that covers the light source portion 100.
The cover 110 has an edge 981 formed around the translucent portion 980.
The edge portion 981 is thicker than the thickness of the translucent portion 980.
The cover 110 has a cover hole 984 in which the screw 115 is inserted into the edge 981.
The cover holes 984 are formed at four positions at intervals of 90 degrees.
The cover hole 984 has a screw collar 985 with a screw 115 inserted therein.
The screw collar 985 is a hollow pipe that is more rigid than the cover 110.
The length of the screw collar 985 is the same as the thickness of the edge 981.

<Clip 950>
The clip 950 will be described with reference to FIG. 42.
The clip 950 sandwiches the cover 110 and the heat receiving body 260.
The clip 950 is made of a metal spring material that is more rigid than aluminum.
The clip 950 has a U-shaped or U-shaped cross section in the radial direction.
The clip 950 has a rectangular back plate 953 and two rectangular holding plates.
Of the two pressing plates, one pressing plate 951 is orthogonal to the back plate 953 at one end of the back plate 953. The presser plate 951 has a boss hole 959 in the center.
The heat receiving plate portion 582 has a cylindrical screw boss 992 formed by burring. A screw hole for fixing the screw 115 is formed in the center of the screw boss 992 by thread cutting.
The boss hole 959 is larger than the screw hole for inserting the screw boss 992 protruding from the upper surface of the heat receiving plate portion 582 in a convex shape. The inner diameter of the boss hole 959 is equal to or larger than the outer diameter of the screw boss 992.
The presser plate 951 has a tapered portion 958 at its tip, and the distance between the two presser plates increases as it approaches the tip of the clip 950.
Of the two presser plates, the other presser plate 952 is orthogonal to the back plate 953 at the other end of the back plate 953. The presser plate 952 has a screw hole formed in the center.

<Enclosed wall 982>
The surrounding wall 982 will be described with reference to FIG. 42.
The cover 110 has a surrounding wall 982 that surrounds the outer circumference of the clip 950.
The surrounding walls 982 are formed at four points at intervals of 90 degrees.
The surrounding wall 982 is a vertical wall formed on the edge portion 981 of the cover 110 and the side surface 986 of the cover 110 with the cover hole 984 as the center.
The height of the surrounding wall 982 is equal to or greater than the thickness of the holding plate of the clip 950.
The surrounding wall 982 reveals the mounting position of the clip 950 and guides the insertion of the clip 950.
Further, the surrounding wall 982 prevents damage caused by the outer peripheral edge of the clip 950.

<Mounting position of clip 950>
As shown in FIG. 42, the clip 950 is attached to the position of the arm 580.
The heat radiating portion 200 has screw holes penetrating the heat receiving body 260 and the heat receiving plate portion 582 of the arm 580 at intervals of 90 degrees.
The clip 950 sandwiches the edge portion 981 of the cover 110, the heat receiving body 260, and the heat receiving plate portion 582, and is screwed with the screw 115.
By fixing the clip 950 not only to the heat receiving body 260 but also to the arm 580, the fixing of the light source unit 100 is ensured.

<Hanging part 900>
The suspension portion 900 will be described with reference to FIGS. 43, 44, and 45.
The upper end of the hanging portion 900 is fixed to a mounted portion such as a ceiling, and the lighting device 1000 is hung.
The lower end of the hanging portion 900 is fixed to the heat radiating portion 200.
The suspension 900 has a hollow pipe 920 and two flanges 901.

<Flange 901>
The suspension 900 has flanges 901 attached to both ends of the pipe 920.
Hereinafter, the flange 901 fixed to one end of the pipe 920 and fixing the plurality of arms 580 is referred to as a lid flange 910.
Further, the flange 901 fixed to the other end of the pipe 920 is called a mounting flange 930.
Hereinafter, when it is not necessary to distinguish between the lid flange 910 and the mounting flange 930, it is simply referred to as a flange 901.

The flange 901 is made of metal.
The flange 901 is a cast molded product.
The flange 901 has a screw hole, but the screw hole of the flange 901 is a cylindrical through hole and is not threaded.

The flange 901 has an opening in the center for passing an electric wire, and has a cylindrical portion 940 into which a pipe 920 is inserted.
The cylindrical portion 940 wraps the outer circumference of the end portion of the pipe 920 at 360 degrees.
The cylindrical portion 940 has a receiving portion 941 to which the end face of the pipe 920 is abutted inside.
The receiving portion 941 is a protrusion protruding toward the central axis O, and the inner diameter of the opening inner peripheral surface 947 of the receiving portion 941 is equal to or smaller than the inner diameter of the pipe 920.

<Cover flange 910>
The lid flange 910 has a disc-shaped, dish-shaped or dome-shaped disc portion 911.
As shown in FIG. 43, the lid flange 910 has a cylindrical portion 940 on the upper surface.
The lid flange 910 has an outer rib 902 formed obliquely on the upper surface of the board portion 911 from the top of the cylindrical portion 940 to the edge portion of the board portion 911.
The outer rib 902 reinforces the strength of the cylindrical portion 940 in which the vibration stress P is concentrated when the lighting device 1000 vibrates.

<Mounting flange 930>
The mounting flange 930 has a hat shape.
As shown in FIG. 45, the mounting flange 930 has a side portion 932 and a bottom portion 933.
The lid flange 910 has a cylindrical portion 940 on the lower surface of the bottom portion 933.
The mounting flange 930 has an inner rib 931 formed diagonally from the side surface to the bottom surface inside the side portion 932 and the bottom portion 933.
The inner ribs 931 are arranged radially from the central axis O.
The inner rib 931 reinforces the strength of the base of the cylindrical portion 940 in which the vibration stress P is concentrated when the lighting device 1000 vibrates.

<Packing 942>
As shown in FIG. 45, the suspension portion 900 has a packing 942 sandwiched between the pipe 920 and the flange 901.
As shown in FIG. 46, the packing 942 has a ring shape as a whole.
The packing 942 is an elastic body, and specifically, it is preferably made of rubber or resin.
The packing 942 has a ring portion 943 of an annular flat plate and a tubular covering portion 944.
The ring portion 943 is sandwiched between the end face of the pipe 920 and the receiving portion 941.
The covering portion 944 is fitted into the inner circumference of the receiving portion 941 and covers the opening inner peripheral surface 947 of the receiving portion 941.

<Loose assembly mechanism 945>
FIG. 45 is a diagram showing an assembly mechanism 945.
The assembly mechanism 945 shown in FIG. 45 loosely fastens the pipe 920 to the flange 901.

The cylindrical portion 940 has a through hole 949 formed in the radial direction.
The pipe 920 also has a through hole 948 formed in the radial direction.
The diameter of the through hole 948 of the pipe 920 is larger than the diameter of the through hole 949 of the cylindrical portion 940.
A rivet 946 is passed through the through hole 949 and the through hole 948, and the pipe 920 is attached to the cylindrical portion 940.
The pipe 920 is attached to the cylindrical portion 940 only by the rivet 946 and not by using screws, adhesives or other fixing members.
The diameter of the rivet 946 is the same as the diameter of the through hole 949 formed in the cylindrical portion 940, but smaller than the diameter of the through hole 948 formed in the pipe 920. Therefore, the pipe 920 is loosely fixed to the cylindrical portion 940 with play.

As shown in FIG. 45, where Y is the diameter of the rivet 946 and X is the diameter of the through hole 948 formed in the pipe 920, Y <X, and there is play only for XY.
The packing 942 absorbs this play.
The ring portion 943 of the packing 942 has a thickness of XY or more in the central axis direction, and even if there is play in XY, the ring portion 943 repels the pipe 920 and the flange 901 so as to separate them from each other. The 920 and the flange 901 do not rattle.
If a pipe-shaped elastic cylinder is arranged around the rivet 946 and the elastic cylinder is embedded in the gap between the through hole 948 formed in the pipe 920 and the rivet 946, the pipe 920 and the flange 901 can be further combined. It is possible to suppress rattling.

As shown in FIG. 45, when the rivet 946 is in the center of the through hole 948, it is assumed that there is a clearance of length L between the end face 921 of the pipe 920 and the receiving portion 941 of the cylindrical portion 940.
When the rivet 946 is at the lower end of the through hole 948, the clearance between the end face 921 of the pipe 920 and the receiving portion 941 of the cylindrical portion 940 is a minimum length L- (XY) / 2.
When the rivet 946 is at the upper end of the through hole 948, the clearance between the end face 921 of the pipe 920 and the receiving portion 941 of the cylindrical portion 940 is a maximum length L + (XY) / 2.
The packing 942 fills the clearance from the minimum length to the maximum length, and the ring portion 943 is an elastic body having a thickness that can be changed at least in the range of the minimum length and the maximum length.
Assuming that the thickness M of the ring portion 943 in the central axial direction when no pressurization is applied, the thickness M of the ring portion 943 in the central axial direction when no pressurization is applied must be equal to or greater than the maximum length.
Further, the ring portion 943 must be one that is not destroyed even when it reaches the minimum length and exhibits elasticity.

Since there is play in YX, the pipe 920 can be repositioned with respect to the flange 901 while deforming the shape of the ring portion 943 of the packing 942. The packing 942 disperses the biased stress P to the surroundings.
As a change in the position of the pipe 920 with respect to the flange 901, there are the following displacements.
(1) Rotation of the pipe 920 with the central axis (fixed axis) of the rivet 946 as the rotation axis (2) Rotation of the pipe 920 with the central axis O as the rotation axis (3) Vertical direction of the pipe 920 of the central axis O Movement (4) Combination of (1) to (3) above

The position change of the pipe 920 with respect to the flange 901 cannot be displaced evenly by 360 degrees because the rivet 946 is inserted horizontally in the radial direction. Specifically, the amount of change in the position of the pipe 920 differs between the horizontal direction in which the central axis (fixed axis) of the rivet 946 exists and the horizontal direction orthogonal to the central axis (fixed axis) of the rivet 946. With one rivet 946, a biased displacement is possible.

Therefore, the rivet 946 of one flange 901 and the rivet 946 of the other flange 901 attached to both ends of the pipe 920 are attached so as to be orthogonal to each other in a plan view.
By making the two rivets 946 orthogonal to each other, the biased displacement caused by one rivet 946 can be alleviated by the biased displacement caused by the other rivet 946.

The inner diameter of the cylindrical portion 940 of the flange 901 may be larger than the outer diameter of the pipe 920. Since a gap is formed between the outer peripheral surface of the pipe 920 and the inner peripheral surface of the cylindrical portion 940, the pipe 920 can be attached more loosely to the flange 901.

As described above, the assembly mechanism 945 refers to a structure in which the pipe 920 is loosely attached to the cylindrical portion 940 of the flange 901.
The assembly mechanism 945 displaceably attaches the pipe 920 to the cylindrical portion 940 so as to relieve the stress P applied to the illuminator 1000.

On the contrary, the diameter of the through hole 949 formed in the cylindrical portion 940 may be larger than the diameter of the through hole 948 formed in the pipe 920. Then, the diameter of the rivet 946 is made the same as the diameter of the through hole 948 formed in the pipe 920, and is smaller than the diameter of the through hole 949 formed in the cylindrical portion 940. In this way, the pipe 920 may be displaceably attached to the cylindrical portion 940.
Further, the diameter of the rivet 946 is made smaller than the diameter of both the diameter of the through hole 949 formed in the cylindrical portion 940 and the diameter of the through hole 948 formed in the pipe 920, and the pipe 920 is made smaller than the diameter of the cylindrical portion 940. It may be mounted so that it can be displaced.

<Manufacturing method of lighting device 1000>
A schematic manufacturing method of the lighting device 1000 will be described with reference to FIGS. 35 and 36.
The outline of the manufacturing method of the lighting device 1000 is as follows.
The heat radiation unit 200 is manufactured, and the light source unit 100 is fixed to the heat radiation unit 200.
Assemble the hanging portion 900 and fix the hanging portion 900 to the heat radiating portion 200.
The instrument cap 800 is manufactured, and finally, the instrument cap 800 is fixed to the heat dissipation unit 200.

<Method of fixing the heat radiation unit 200 and the light source unit 100>
A method of fixing the heat radiating unit 200 and the light source unit 100 will be described with reference to FIGS. 41 and 42.
It is assumed that the heat radiating unit 200 has already been completed.
First, the light source substrate 150 is fixed to the heat receiving body 260, and the cover 110 is aligned with the heat receiving body 260 so as to cover the light source substrate 150.
At that time, the cover 110 is aligned with the heat receiving body 260 so that the surrounding wall 982 coincides with the screw holes of the heat receiving body 260, and the screw holes of the cover 110 and the heat receiving body 260 are aligned with each other.
Next, the screw collar 985 is inserted into the cover hole 984.
Next, the clip 950 sandwiches the edge portion 981 of the cover 110, the heat receiving body 260, and the heat receiving plate portion 582. At that time, the tapered portion 958 of the presser plate 951 is hooked on the end portion of the heat receiving plate portion 582 to widen the distance between the two presser plates, and further, the tip of the presser plate 951 is placed on the outer periphery of the cover 110 to clip 950. Push toward the central axis.
Since the back plate 953 of the clip 950 is guided by the surrounding wall 982, the clip 950 is inserted in the radial direction.
Further, since the presser plate 951 has the tapered portion 958, the screw boss 992 of the heat receiving plate portion 582 can be overcome, and the screw boss 992 of the heat receiving plate portion 582 fits into the boss hole 959 of the pressing plate 951.
Next, the screw 115 is inserted from the cover 110 toward the heat receiving body 260. The screw 115 passes through the screw hole of the holding plate 952 and the screw collar 985, and the screw hole of the heat receiving body 260 and the screw of the heat receiving plate portion 582. Screwed into the hole.

<Assembly method of hanging part 900>
A method of assembling the suspension portion 900 will be described with reference to FIGS. 44 and 45.
Through holes 948 having a diameter larger than the diameter of the rivet 946 are formed at both ends of the pipe 920.
At that time, the through hole 948 at one end and the through hole 948 at the other end of the pipe 920 are formed so as to be orthogonal to each other in a plan view.
A through hole 949 having the same diameter as the diameter of the rivet 946 is formed in the cylindrical portion 940 of the flange 901.
Next, the packing 942 is inserted into the cylindrical portion 940 of the pipe 920. At that time, the covering portion 944 is first inserted into the cylindrical portion 940, and the outer periphery of the covering portion 944 of the packing 942 is fitted into the inner peripheral wall of the receiving portion 941. At the same time, the ring portion 943 is placed on the receiving portion 941.
Next, the pipe 920 is inserted into the cylindrical portion 940, and the end face of the pipe 920 is pressed against the ring portion 943.
Next, the rivet 946 is passed through the through hole 948 and the through hole 949 while the end surface of the pipe 920 is pressed against the ring portion 943, and one end of the rivet 946 is crimped to fix the rivet 946 to the pipe 920.
With this, the flange 901 is attached to the pipe 920 with the packing 942 sandwiched between the pipe 920 and the flange 901. Due to the elasticity of the packing 942 fitted between the pipe 920 and the flange 901, the pipe 920 and the flange 901 do not rattle.
This completes the assembly mechanism in which the pipe 9020 is loosely attached to the flange lid flange 910 so that the pipe 920 can be displaced with respect to the flange 901.
These operations are performed on the flanges 901 of both the lid flange 910 and the mounting flange 930.
It is desirable to provide the assembly mechanism 945 on both flanges 901, but if only one is provided, it is desirable to provide the assembly mechanism 945 on the mounting flange 930 on which the stress P is strongly applied.

<How to fix the heat radiation unit 200 and the suspension unit 900>
A method of fixing the heat radiating portion 200 and the suspending portion 900 will be described with reference to FIG. 39.
A fixed seat 916 having a screw hole 919 and a protrusion 983 is formed on the lid flange 910 of the suspension portion 900.
A screw hole 589 and a protrusion receiving portion 957 that receives the protrusion 983 are formed in the connection plate portion 583 of the arm 580 of the heat radiation portion 200.
At the time of assembly, the entire surface of the connection plate portion 583 of the arm 580 is brought into surface contact with the fixed seat 916 of the lid flange 910, and the protrusion 983 is inserted into the protrusion receiving portion 957.
By fitting the protrusion screw hole 919 into the protrusion receiving portion 957, the mounting position of the heat radiating portion 200 is determined, and the positions of the screw hole 919 of the fixed seat 916 and the screw hole 589 of the connection plate portion 583 match.
Next, the screw 903 is screwed into the screw hole 919 and the screw hole 589 to fix the lid flange 910 of the hanging portion 900 and the arm 580 of the heat radiating portion 200.

<How to fix the heat radiation unit 200 and the fixture shade 800>
With reference to FIG. 40, a method of fixing the heat radiating unit 200 and the instrument cap 800 will be described.
The light source unit 100 is fixed to the heat radiation unit 200 by the method described above.
The hanging portion 900 is fixed to the heat radiating portion 200 by the method described above.
Next, the hanging portion 900 is passed from the opening of the bottom opening 820 of the instrument cap 800 toward the opening of the top opening 810.
Since the opening diameter W2 of the upper surface opening 810 and the opening diameter W4 of the bottom opening 820 are larger than the diameter W1 of the hanging portion 900, the instrument cap 800 can pass the hanging portion 900.
The instrument cap 800 is moved until the upper surface opening 810 hits the cap mounting portion 591 of the heat radiating portion 200.
Next, the instrument cap 800 is rotated to align the positions of the cap fixing portion 840 of the upper surface opening 810 with the cap mounting portion 591, and the instrument cap 800 is fixed to the cap mounting portion 591 with screws.
This completes the fixing of the fixture cap 800 to the heat dissipation unit 200.

<Effect of fixed structure of light source unit 100 and heat dissipation unit 200>
<Fall prevention>
If the heat receiving body 260 is made of aluminum, so-called "screw stupidity" in which the screw thread of the screw hole of the heat receiving body 260 is easily cut or damaged is likely to occur, and the screw 115 may fall. Even if the screw 115 may come off, since the heat radiation unit 200 and the light source unit 100 are sandwiched by the clip 950, it is possible to prevent the light source unit 100 from falling from the heat radiation unit 200.

<Crazing measures>
Since the fastening force of the screw 115 can be dispersed by the clip 950 and cracking of the cover 110 can be suppressed, the clip 950 has an effect of crazing measures against the cover 110.
Further, since there is a screw collar 985 and the fastening force of the screw 115 is applied to the screw collar 985, cracking of the cover 110 can be suppressed.
If the fastening force of the screw 115 can be sufficiently dispersed by the clip 950, the screw collar 985 is unnecessary.

<Prevention of screw stupidity>
When tightening the screw 115, the torque of the screw 115 can be received by the clip 950, so that the stress concentration on the cover 110 can be relaxed. It is possible to suppress the generation of "screw stupidity" in the screw holes of the heat receiving body 260.

If the presser plate 951 of the clip 950 made of a metal spring material having a rigidity higher than that of aluminum is subjected to burring and thread cutting, and the screw 115 is screwed to the presser plate 951, heat is received. Compared to the body 260, "screw stupidity" is less likely to occur. Further, it is not necessary to perform burring processing on the heat receiving body 260, and it is not necessary to perform thread cutting processing on the screw holes of the heat receiving body 260.

<Effect of fixed structure between heat dissipation part 200 and suspension part 900>
<Vibration measures>
As shown by the arrow in FIG. 43, when the lighting device 1000 vibrates, the vibration stress P concentrates on the root of the cylindrical portion 940 of the mounting flange 930. Further, stress P is also applied to the root of the cylindrical portion 940 of the lid flange 910.
The packing 942 of the assembly mechanism 945 can alleviate the stress P of the vibration received by the lighting device 1000, and can reduce the damage of the cylindrical portion 940.
Further, since the assembly mechanism 945 provides a clearance between the pipe 920 and the flange 901 and the pipe 920 is loosely and loosely attached to the flange 901, the stress P applied to the connection point between the flange 901 and the pipe 920 is applied. Can be relaxed.
Further, since the clearance gap between the pipe 920 and the flange 901 is filled with the packing 942, the repulsive force of the packing 942 can suppress the wobbling when the pipe 920 is held. In addition, the stress P when subjected to vibration due to the elastic deformation of the packing 942 can be dispersed, and a seismic isolation effect can be obtained.
Further, since the fixed axis of the rivet 946 to which the pipe 920 is fixed is shifted by 90 degrees, a seismic isolation effect can be obtained not only for one direction but also for a force from a plurality of directions.
Further, since the mounting flange 930 has the inner rib 931 and the lid flange 910 has the outer rib 902, the strength of the roots of the cylindrical portion 940 and the cylindrical portion 940 can be increased.

<Effect of fixed structure between heat dissipation part 200 and instrument shade 800>
<Heat dissipation>
Due to the stepped structure of the arm 580, a large opening can be formed in the upper part of the instrument cap 800, and even if the instrument cap 800 covers the heat radiating portion 200, the air permeability is good and the heat dissipation is good.
Since the step structure of the arm 580 forms a heat dissipation space between the fixture cap 800 and the suspension portion 900, even if the fixture cap 800 covers the heat dissipation portion 200, the air permeability is good and the heat dissipation is good. ..

<Prevention of deterioration of heat dissipation effect>
Since the heat radiating section 200 is covered by the instrument cap 800, the volume of dust on the radiating section 200 can be suppressed, and the heat radiating effect of the heat radiating section 200 can be maintained.

<Improved assembly>
Since the opening diameter of the upper surface opening 810 is larger than the maximum diameter of the hanging portion 900, the fixture cap 800 can be attached and detached without removing the hanging portion 900 from the heat radiating portion 200.
Therefore, the fixture cap 800 having the maximum volume in the lighting device 1000 can be attached at the end of the assembly, the assembling property is improved, and the occurrence rate of scratches generated during the assembly can be reduced.

<Improvement of design>
Since the heat radiating portion 200 is covered by the instrument cap 800, the radiating portion 200 is not exposed and the design is improved.

<Easy to replace>
Since the fixture cap 800 can be attached and detached without removing the hanging portion 900 from the heat radiating portion 200, the fixture shade 800 of the lighting device 1000 can be replaced with a fixture shade 800 having a different shape or a different color according to the customer's request. It is easy to change to. The fixture shade 800 can be changed even at the installation site of the lighting device 1000.

<Independence>
Since the instrument cap 800 is fixed only to the heat dissipation part 200 and the suspension part 900 is fixed only to the heat dissipation part 200, and the instrument cap 800 and the suspension part 900 are independent parts that are not related to each other, the instrument cap 800 and the suspension part are fixed. The degree of freedom in designing, manufacturing, and changing with the 900 increases.

*** Other examples of Embodiment 4 ***
<< Other examples of cover 110 and clip 950 >>
Other examples of the cover 110 and the clip 950 will be described with reference to FIGS. 47 and 41 (b).
The cover 110 has a recess 987 that positions the clip 950.
The recess 987 is a recess provided in the edge 981.
Two recesses 987 are formed inside the surrounding wall 982 on the inner side in the radial direction from the cover hole 984.

The clip 950 has a ridge 993 on the presser plate 952.
The mountain portion 993 is a convex portion formed at two points at the corner of the presser plate 952.
The mountain portion 993 is formed at a position corresponding to the recess 987 when the clip 950 is fitted.
The recess 987 and the mountain portion 993 provide a hooking mechanism for hooking the clip 950 to the cover 110.
When the clip 950 is fitted, the recess 987 is fitted to the mountain portion 993, so that the position of the clip 950 is determined.
Further, the hooking mechanism makes it difficult for the clip 950 to come off from the cover 110 even if the screw 115 comes off, and the hooking mechanism suppresses the cover 110 from falling.

Further, one of the two presser plates 952 has a screw hole 956 into which the screw 115 is inserted, while the other presser plate 951 has a U-shaped cut portion 955 through which the screw 115 is passed.
In FIG. 47 and FIG. 41 (b), the clip 950 sandwiches the cover 110 and the heat receiving body 260, and does not sandwich the arm 580. The heat receiving body 260 has a cylindrical screw boss 992 formed by burring. At the center of the screw boss 992, a screw hole that has been threaded to fix the screw 115 is formed.
The cut portion 955 has a U-shape with the tip open in a U-shape in order to insert the screw boss 992 protruding from the upper surface of the heat receiving body 260 in a convex shape. The U-shaped cut width is equal to or larger than the outer diameter of the screw boss 992.

Further, the radial length of one of the two pressing plates 952 is longer than the radial length of the other pressing plate 951.
By hooking the longer presser plate 952 on the cover 110 first to widen the space between the two presser plates, then hooking the shorter presser plate 951 on the heat receiving body 260 and pushing the clip 950 in the radial direction. Clip 950 can be attached.
It is easier to attach the clip 950 than when the two presser plates have the same length.
Further, since the mountain portion 993 is provided at the tip of the longer pressing plate 952, the clip 950 can be easily positioned.
Further, since the enclosing wall 982 for the guide is provided on the outer periphery of the longer pressing plate 952, the clip 950 can be easily slid.
Further, since the shorter pressing plate 951 has the cut portion 955, the cut length in the radial direction can be small.
The cover 110 may have a mountain portion 993, and the clip 950 may have a recess 987.

<< Another example of the fixed structure of the heat dissipation part 200 and the suspension part 900 >>
FIG. 48 describes another example of the fixed structure of the heat radiating portion 200 and the suspending portion 900.
FIG. 48 describes an example in which the heat radiation unit 200 fixes the suspension unit 900 from two orthogonal directions.
Here, an example in which the arm 580 fixes the lid flange 910 of the suspension portion 900 from at least two directions will be described.

<Two-way fixing example 1>
The lid flange 910 has a board portion 911 fixed to the connection plate portion 583.
The board 911 has screw holes 919 at 90 degree intervals.
The lid flange 910 has an inner cylinder portion 913 in the center of the lower surface of the plate portion 911.
The inner cylinder portion 913 is a cylinder formed around the central axis O.
The cylinder wall of the inner cylinder portion 913 is parallel to the central axis O and orthogonal to the back surface of the board portion 911.
The lid flange 910 has a plurality of vertical wall portions 915 orthogonal to the board portion 911 on the lower surface of the board portion 911.
There are four standing wall portions 915, which are arranged radially and radially from the central axis O at intervals of 90 degrees from the inner cylinder portion 913.
The vertical wall portion 915 has a horizontal hole 912 formed in the horizontal direction.
The horizontal hole 912 is not a circle but a vertically elongated or bell-shaped hole.
The screw hole 919 and the lateral hole 912 are orthogonal to each other.
Since the lid flange 910 is a cast product, the horizontal hole 912 is formed by a vertical hole 996 posted from the board portion 911 toward the vertical wall portion 915.
The vertical wall portion 915 has a U-shaped raised wall 997 around the lateral hole 912.
The U-shaped raised wall 997 is a raised wall erected orthogonally from the standing wall portion 915.
The U-shaped raised wall 997 is a portion where the screw heads come into contact with each other and are tightened, and is a wall that reinforces the standing wall portion 915.

The arm 580 has a plate hole 594 in the basic plate portion 581 and a screw hole 589 in the connection plate portion 583.
The plate hole 594 and the screw hole 589 are orthogonal to each other.

<How to fix the hanging part 900 and the heat radiating part 200>
First, the connection plate portion 583 at the tip of the arm 580 is pressed against the lid flange 910.
Further, the reinforcing plate portion 584 of the arm 580 is pressed against the outer circumference of the inner cylinder portion 913.
This completes the positioning of the arm 580 in the horizontal two-dimensional direction.
Next, the screw 903 is passed through the screw hole 919 of the lid flange 910 and screwed into the screw hole 589 to fix the lid flange 910 to the connection plate portion 583.
Further, a screw (not shown) is passed through the horizontal hole 912 of the vertical wall portion 915 and screwed into the plate hole 594 to fix the vertical wall portion 915 to the basic plate portion 581.
Since the horizontal hole 912 is a vertically long hole or a bell-shaped hole, it is easy to fit the screw into the plate hole 594 when passing a screw (not shown) from the horizontal hole 912.
Further, even if the heights of the plate holes 594 of the four arms 580 are misaligned, the vertically elongated or bell-shaped horizontal holes 912 absorb the misalignment of the heights of the plate holes 594 of the four arms 580. can do.
This means that the suspension portion 900 is fixed from two directions orthogonal to each other by the arm 580 of the heat radiation portion 200.

<Effect of fixed structure between suspension part 900 and heat dissipation part 200>
Since the hanging portion 900 and the heat radiating portion 200 are fixed from two orthogonal directions, the hanging portion 900 and the heat radiating portion 200 can be reliably fixed.

<Two-way fixing example 2>
As shown in FIG. 48, a screw hole 919 is formed in the board portion 911, a screw hole 589 is formed in the connection plate portion 583, the board portion 911 and the connection plate portion 583 are screwed together, and the inner cylinder portion 913 is screwed. A hole 994 may be formed, a screw hole 995 may be formed in the reinforcing plate portion 584, and the inner cylinder portion 913 and the reinforcing plate portion 584 may be screwed together.
The screw 903 for fixing the board portion 911 and the connecting plate portion 583 is parallel to the central axis O, and the screw for fixing the inner cylinder portion 913 and the reinforcing plate portion 584 is orthogonal to the central axis O. The heat radiating portion 200 fixes the hanging portion 900 from two orthogonal directions.
In this way, the board portion 911 may be fixed to the connection plate portion 583, and the inner cylinder portion 913 orthogonal to the board portion 911 may be fixed to the reinforcing plate portion 584.

<Two-way fixing example 3>
As shown in FIG. 48, a horizontal hole 912 is formed in the vertical wall portion 915, a plate hole 594 is formed in the basic plate portion 581, the vertical wall portion 915 and the basic plate portion 581 are screwed together, and the inner cylinder portion 913 is screwed. A hole 994 may be formed, a screw hole 995 may be formed in the reinforcing plate portion 584, and the inner cylinder portion 913 and the reinforcing plate portion 584 may be screwed together.
The screws for fixing the vertical wall portion 915 and the basic plate portion 581 are orthogonal to each other in the radial direction, and the screws for fixing the inner cylinder portion 913 and the reinforcing plate portion 584 are along the radial direction. However, the suspension portion 900 is fixed from two orthogonal directions.
In this way, the vertical wall portion 915 may be fixed to the basic plate portion 581, and the inner cylinder portion 913 orthogonal to the board portion 911 may be fixed to the 814.

<Example of fixing in 3 directions>
As shown in FIG. 48, a screw hole 919 is formed in the board portion 911, a screw hole 589 is formed in the connection plate portion 583, and the board portion 911 and the connection plate portion 583 are screwed together.
A horizontal hole 912 is formed in the vertical wall portion 915, a plate hole 594 is formed in the basic plate portion 581, and the vertical wall portion 915 and the basic plate portion 581 are screwed together.
A screw hole 994 is formed in the inner cylinder portion 913, a screw hole 995 is formed in the reinforcing plate portion 584, and the inner cylinder portion 913 and the reinforcing plate portion 584 are screwed together.
That is, the heat radiation unit 200 may fix the suspension unit 900 from three orthogonal directions.

<< Another example of the fixed structure of the heat dissipation part 200 and the suspension part 900 >>
FIG. 49 describes another example of the fixed structure of the heat radiating portion 200 and the suspending portion 900.

The suspension portion 900 has an insertion portion 917 into which the connection plate portion 583 of the arm 580 is inserted.
The insertion portion 917 is a horizontal piece formed from the lid flange 910 with a step.
The insertion portion 917 has an L-shaped cross-sectional shape in the radial direction.
The insertion portion 917 has a screw hole 919 and a claw portion 918.
The claw portion 918 has a fishing hook shape or an arrowhead shape, and the hooked portion protrudes toward the top of the horizontal piece.
The claw portion 918 hooks the connecting plate portion 583 of the arm 580 to temporarily fix the arm 580.

The arm 580 has a connecting plate portion 583.
The connection plate portion 583 has a screw hole 589 and a claw receiving portion 991.

The insertion portion 917 supports the connection plate portion 583.
The claw portion 918 hooks the claw receiving portion 991.
The connecting plate portion 583 may have a claw portion 918, and the insertion portion 917 may have a claw receiving portion 991.

<How to fix the heat dissipation part 200 and the hanging part 900>

An insertion portion 917 having a screw hole 919 and a claw portion 918 is formed in the board portion 911 of the lid flange 910 of the suspension portion 900.
A screw hole 589 and a claw receiving portion 991 for receiving the claw portion 918 are formed in the connection plate portion 583 of the arm 580 of the heat radiating portion 200.
At the time of assembly, the connection plate portion 583 at the tip of the arm 580 is pressed against the lid flange 910.
Next, the suspension portion 900 is rotated around the central axis O, and the connection plate portion 583 is inserted into the insertion portion 917 so that the lower surface of the connection plate portion 583 touches the upper surface of the insertion portion 917.
Then, the claw portion 918 formed in the insertion portion 917 is hooked on the claw receiving portion 991 of the connection plate portion 583, and the arm 580 is temporarily held by the lid flange 910.
Since the insertion portion 917 supports the connection plate portion 583 and the claw portion 918 is fitted into the claw receiving portion 991 and temporarily fixed, the heat radiating portion 200 does not come off from the suspension portion 900.
Then, the screw 903 is passed through the screw hole 919 of the lid flange 910 and screwed into the screw hole 589 to fix the lid flange 910 of the hanging portion 900 to the arm 580 of the fixing portion 500.

<Effect of fixed structure between suspension part 900 and heat dissipation part 200>
When the heat radiating portion 200 is fixed to the hanging portion 900, the heat radiating portion 200 is hooked by the claw portion 918 and temporarily held, so that the fixing work between the hanging portion 900 and the heat radiating portion 200 becomes easy.
Further, since the heat radiating portion 200 is hooked on the hanging portion 900 by the claw portion 918 and fixed by the screw 903, the radiating portion 200 does not fall even if the screw 903 comes off.

<< Another example of the fixed structure of the heat radiation unit 200 and the fixture cap 800 >>
As shown in FIG. 50, the upper surface opening 810 having a tongue-shaped cap fixing portion 840 continuous from the cap portion 830 may be formed without providing the eaves-shaped upper surface opening 810 in the instrument cap 800. Since there is no eave-shaped upper surface opening 810, the opening area on the upper side of the instrument cap 800 is widened, and the heat dissipation effect is improved.
Since the opening diameter W5 at the upper portion of the bottom opening portion 820 is smaller than the maximum diameter W3 of the heat radiating portion 200, the instrument cap 800 does not fall from the heat radiating portion 200 even without the top surface opening 810.

As shown in FIG. 51, the shade mounting portion 591 of the arm 580 is not formed horizontally on the step of the basic plate portion 581, but is formed diagonally at the tip of the extension portion 595 extending from the basic plate portion 581.
Further, without providing the eaves-shaped upper surface opening 810 in the instrument cap 800, the cap portion 830 and the upper end are set as the upper surface opening 810, and the cap fixing portion 840 is formed at the upper end of the cap portion 830.
The inclination angle of the shade attachment portion 591 of the arm 580 is the same as the inclination angle of the shade portion 830.
The length of the extension of the extension portion 595 of the arm 580 is the same as the distance of the heat dissipation space between the heat dissipation portion 200 and the instrument cap 800.
Since there is no upper surface opening 810, the opening area on the upper side of the instrument cap 800 is widened, and the heat dissipation effect is improved.
Since the opening diameter W5 at the upper portion of the bottom opening portion 820 is smaller than the maximum diameter W3 of the heat radiating portion 200, the instrument cap 800 does not fall from the heat radiating portion 200 even without the top surface opening 810.

<< Other examples of hanging part 900 >>
As shown in FIG. 52, if the thickness of the bottom portion 933 of the mounting flange 930 on which the cylindrical portion 940 is formed is made thicker than the thickness of the side portion 932, the strength of the base of the cylindrical portion 940 can be increased.
Further, if the radius R of the curved surface from the bottom portion 933 of the mounting flange 930 to the outer peripheral surface of the cylindrical portion 940 is increased, the strength of the root of the cylindrical portion 940 can be increased.
Further, if the wall thickness of the root of the cylindrical portion 940 is made thicker than the wall thickness of the tip of the cylindrical portion 940, the strength of the root of the cylindrical portion 940 can be increased.

<< Other examples of lighting device 1000 >>
The outer shape of the illuminating device 1000 in a plan view does not have to be circular, and may be a quadrangle, a hexagon, another polygon, or another shape such as an ellipse.
The shape of the instrument cap 800 may be a quadrangular pyramid, a hexagonal frustum, or any other polygonal frustum, or may have a wavy, net-like, uneven shape, constriction, or the like.

100 Light source, 110 cover, 111 edge, 112 bend, 113 packing, 115 screw, 119 lower end surface, 120 reflector, 121 reflective surface, 122 annular groove, 123 notch, 124 board retainer, 125 screw hole, 126 Protrusions, 129 openings, 130 cover stoppers, 133 screw holes, 134 protrusions, 135 ends, 140 light source elements, 150 light source boards, 151 short sides, 152 long sides, 153 arcuate sides, 154 marks, 155 tooth holders, 156 fittings. Insertion hole, 157 terminal, 160 stabilizer, 161 screw hole, 162 cylinder stop, 163 thick cylinder, 164 annular surface, 165 thin cylinder, 166 wiring groove, 167 wiring groove, 168 tooth, 169 mark, 170 fitting , 171 Presser surface, 172 wiring holes, 173 wide parts, 180 insulation sheet, 181 wiring holes, 182 screw holes, 190 countersunk screws, 200 heat dissipation parts, 260 heat receivers, 261 screw holes, 262 caulking parts, 263 screw holes, 264 wiring holes, 265 screw holes, 270 heat dissipation pieces, 271 heat dissipation plates, 272 fixing plates, 273 caulking parts, 275 heat dissipation pieces, 276 heat dissipation plates, 277 fixing plates, 278 screw holes, 300 connection parts, 305 bases, 301 base sockets. Body, 302 eyelet, 310 support, 311 joint part, 312 support cylinder part, 313 support flange part, 314 U-shaped receiving part, 315 C-shaped wall receiving part, 316 caulking part, 320 lid part, 321 small cylinder part, 322 lid hole, 323 large cylinder, 324 screw enclosure, 325 screw hole, 326 ring placement surface, 340 ring, 341 screw hole, 350 drop stopper, 351 passage hole, 352 upper hook, 353 lower hook, 360 screw, 381 standing plate 390 holder, 391 board, 392 vertical part, 393 pipe hole, 394 large mouth, 395 small mouth, 396 U-shaped notch, 397 C-shaped wall, 398 screw hole, 399 screw, 400 wiring part, 410 wiring cylinder, 430 wiring Material, 461 insertion hole, 462 insertion hole, 500 fixing part, 580 arm, 581 basic plate part, 582 heat receiving plate part, 583 connection plate part, 584 reinforcing plate part, 585 holes, 586 Heat dissipation part, 587 extension part, 588 screw hole, 589 screw hole, 590 screw hole, 591 cap mounting part, 592 tongue part, 593 screw hole, 594 plate hole, 595 extension part, 600 fall prevention mechanism, 619 through hole, 621 Wires, 618 Clasps, 610 Ceilings, 611 Brackets, 612 Suspensions, 613 Sockets, 614 Lighting Fixtures, 615 Cylinders, 616 Caps, 710 Guide Protrusions, 711 Notches, 720 Recesses, 721 Bottom Walls, 722 Right Walls , 723 left wall, 724 lower wall, 725 upper wall, 730 convex part, 740 caulking pin, 751 holding part, 752 storage part, 753 protrusion, 761 holding part, 762 arrangement part, 763 positioning part, 771 bag nut, 772 Nut, 780 product label, 800 instrument cap, 801 cap screw, 810 top opening, 820 bottom opening, 830 cap, 840 cap fixing, 900 suspension, 901 flange, 902 outer rib, 903 screw, 910 lid flange , 911 board part, 912 side hole, 913 inner cylinder part, 915 standing wall part, 916 fixed seat, 917 insertion part, 918 claw part, 919 screw hole, 920 pipe, 921 end face, 930 mounting flange, 931 inner rib, 932 side Part, 933 bottom, 940 cylindrical part, 941 receiving part, 942 packing, 943 ring part, 944 covering part, 945 assembly mechanism, 946 rivets, 947 opening inner peripheral surface, 948 through hole, 949 through hole, 950 clip, 951 presser Plate, 952 presser plate, 953 back plate, 955 cut part, 956 screw hole, 957 protrusion receiving part, 958 taper part, 959 boss hole, 980 translucent part, 981 edge part, 982 surrounding wall, 983 protrusion, 984 cover hole , 985 screw collar, 986 side surface, 987 recess, 991 claw holder, 992 screw boss, 993 mountain part, 994 screw hole, 995 screw hole, 996 vertical hole, 1000 lighting device.

Claims (6)

In a lighting device having a hanging part fixed to a mounted part,
The hanging part is
With a pipe
It comprises a flange having a cylindrical portion covering the end of the pipe and an assembly mechanism in which the pipe is loosely attached to the cylindrical portion.
The cylindrical portion and the pipe have a through hole and have a through hole.
The assembly mechanism has a rivet that penetrates the through hole formed in the cylindrical portion and the pipe.
The flanges are attached to both ends of the pipe and
A lighting device in which the rivet of one flange of the flange attached to both ends of the pipe and the rivet of the other flange are orthogonal to each other in a plan view. The lighting device according to claim 1, wherein the assembly mechanism is displaceably attached to the pipe so as to relieve stress applied to the lighting device. The lighting device according to claim 2, further comprising a packing sandwiched between the pipe and the flange. It has a pipe receiving portion formed at the bottom of the cylindrical portion and receiving the end face of the pipe.
The packing is
A ring portion sandwiched between the end surface of the pipe and the pipe receiving portion,
The lighting device according to claim 3, further comprising a covering portion that covers the opening surface of the pipe receiving portion. The lighting device according to any one of claims 1 to 4, wherein the diameter of the rivet is smaller than the diameter of either one of the through holes formed in the cylindrical portion and the pipe. In a lighting device having a hanging part fixed to a mounted part,
The hanging part is
With a pipe
A flange having a cylindrical portion covering the end of the pipe, an assembly mechanism in which the pipe is loosely attached to the cylindrical portion, and a mechanism.
The packing sandwiched between the pipe and the flange,
It has a pipe receiving portion formed at the bottom of the cylindrical portion and receiving the end face of the pipe.
The packing is
A ring portion sandwiched between the end surface of the pipe and the pipe receiving portion,
A lighting device having a covering portion that covers the opening surface of the pipe receiving portion.

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