JP2013062107A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of improving designability, improving assembly workability by reducing the number of components, and controlling temperature rise of light-emitting elements.SOLUTION: The luminaire includes: a device body 1; light source sections 2 each having a substrate 21 and light-emitting elements 22 mounted on the substrate 21 and is installed in the device body 1; support fittings 5 supporting the light source sections 2 and each having first contact parts 53 to be thermally coupled with the light source section 2 and a second contact part 51 to be thermally coupled with the system body 1; and fixing means 6 which fix the support fittings 5 to the device body 1 from a rear side of the device body 1 through the device body 1 and the second contact parts 51 of the support fittings 5.

Description

  Embodiments described herein relate generally to a lighting device using a light emitting element such as a light emitting diode (hereinafter referred to as LED) as a light source.

In recent years, along with higher output and higher efficiency of LEDs, lighting devices that can be used indoors or outdoors using LEDs as light sources have been developed. This illuminating device is obtained by mounting a plurality of LEDs on a substrate so as to obtain a predetermined brightness, and is used as, for example, base illumination attached to a system ceiling of an office.
In such an illuminating device, a substrate on which an LED is mounted is attached to the device main body from the front side by a fixing means such as a screw.

  On the other hand, as the temperature of a light emitting element such as an LED increases, the light output decreases and the useful life is shortened. For this reason, for a lighting device using a solid light emitting element such as an LED or an EL element as a light source, the temperature of the light emitting element is prevented from rising in order to extend the service life or improve characteristics such as light emission efficiency. It is necessary. For this reason, various heat dissipation structures that suppress the temperature rise of the light emitting element are employed.

JP 2010-73670 A JP 2011-23138 A

  However, in the illumination device as described above, a fixing means such as a screw appears on the front surface side, which may impair the design. In addition, the number of fixing means such as screws tends to increase, resulting in a problem that the number of parts increases and the assembly workability is not efficient.

  The present invention has been made in view of the above-described problems, and is an illumination device that can improve designability, reduce the number of components, improve assembly workability, and suppress the temperature rise of the light emitting element. The purpose is to provide.

  An illuminating device according to an embodiment of the present invention includes a device main body, a light source unit that includes a substrate and a light emitting element mounted on the substrate, and is disposed in the device main body.

  And a support fitting having a first contact portion that is thermally coupled to the light source portion and a second contact portion that is thermally coupled to the device body, and the device body. And a fixing means for fixing the support fitting to the apparatus main body through the apparatus main body and the second abutting portion of the support fitting from the back side.

  According to an embodiment of the present invention, it is possible to provide a lighting device capable of improving designability, reducing the number of parts, improving assembly workability, and suppressing a temperature rise of a light emitting element. Is possible.

It is a perspective view which shows the illuminating device which concerns on the 1st Embodiment of this invention. It is the perspective view which shows the same illuminating device seeing from the front side, and shows an installation plate removed. It is a perspective view which decomposes | disassembles and shows the same illuminating device. It is sectional drawing shown along XX in FIG. FIG. 5 is an enlarged sectional view showing a part A in FIG. 4. It is a perspective view which shows the module of the light source part in the illumination device. It is a perspective view which shows the attachment state of a support metal fitting in the same illuminating device. It is a perspective view which shows the state by which the light source part was arrange | positioned at the light source part support member in the same illuminating device. It is a perspective view which shows the light source part support member in the illumination device. It is a perspective view which shows the illuminating device which concerns on the 2nd Embodiment of this invention seeing from the front side. It is sectional drawing shown along XX in FIG. It is a perspective view which shows the module of the light source part in the illumination device. It is sectional drawing which shows the attachment state of a support metal fitting in the same illuminating device, (a) shows the attachment completion state, (b) has shown the attachment initial state. It is a perspective view which shows the arrangement | positioning relationship between a light source part and a support metal fitting in the same illuminating device. It is a perspective view which shows the light source part in the illumination device. It is a perspective view which shows the support metal fitting in the same illuminating device.

  Hereinafter, a first embodiment of a lighting device according to the present invention will be described with reference to FIGS. 1 to 9. In addition, illustration of wiring member relations, such as a lead wire, is abbreviate | omitted, the same code | symbol is attached | subjected to the same part in each figure, and the overlapping description is abbreviate | omitted.

  In FIG. 1 to FIG. 3, a base light installed on a system ceiling in which T bars are installed in a lattice shape on a ceiling of an office or the like as a lighting device is shown. The lighting device is formed in a substantially square shape. ing.

  As shown in FIG. 1, the lighting device is installed on a lattice-shaped T-bar (Tb) installed on the ceiling. In FIG. 1, a part of the T bar (Tb) is shown. The illuminating device includes an apparatus main body 1, a light source unit 2 disposed in the apparatus main body 1, a heat radiating member 3, a translucent cover member 4 that covers the light source unit 2, and a support bracket that supports the light source unit 2. 5 and a fixing means 6 for fixing the support metal fitting 5. Further, a lighting device 7 that controls lighting of the light source unit 2 and an equipment plate 8 are provided. Such an illuminating device has a front side as a light irradiation surface and a back side as a mounting surface to the ceiling.

  As representatively shown in FIGS. 2 to 4, the apparatus main body 1 is a substantially square chassis, and includes a light source support member 11 and an end plate member 12. The light source support member 11 and the end plate member 12 are formed by applying a white coating for increasing the reflectance to a metal plate having thermal conductivity such as a hot dip galvanized steel plate.

  In this embodiment, the light source unit 2 for two lamps is arranged in two places in parallel to form a row, and accordingly, the light source unit support member 11 is provided in two rows. It becomes like this. As shown in FIG. 7 and FIG. 9, the light source unit support member 11 has a substantially U-shaped side surface. From the back wall 11a and both sides along the longitudinal direction of the back wall 11a. And a side wall 11b bent to the front side.

  A pair of horizontally long and rectangular openings 11c are formed in the back wall 11a, and mounting screw through holes 11d are formed at both ends in the longitudinal direction. Moreover, the edge part along the longitudinal direction of the side wall 11b is bent and formed in hook shape.

  The end plate members 12 are formed in a horizontally long and substantially L-shape, and a pair of end plate members 12 having a back wall 12a and side walls 12b are provided. A mounting screw through hole 12c is formed in the back wall 12a, and a metal fitting 12d bent in a key shape supported by a T-bar (Tb) installed on the ceiling is attached to the outside of the side wall 12b. It has been. Further, a terminal block 12e for connecting a power line and a dimming signal line is attached to the back wall 12a of one end plate member 12.

  A pair of such end plate members 12 are provided so as to close the openings at both ends in the longitudinal direction of the light source support member 11. Therefore, the light source unit support member 11 and the end plate member 12 are combined to form a substantially square shape, and the outer shape of the apparatus main body 1 is composed of the side wall 11b of the light source unit support member 11 and the side wall 12b of the end plate member 12. Will be formed.

  The apparatus main body 1 corresponds to a chassis in the present embodiment, but may be referred to as a case, a reflector, or a base, and is not restricted by the names of the members. In general, it means a member or a part where the light source unit 2 is directly or indirectly arranged, and is not interpreted in a particularly limited manner.

  As representatively shown in FIGS. 3 to 6, the light source unit 2 includes a substrate 21, a plurality of light emitting elements 22 mounted on the substrate 21, and a phosphor layer 23 covering each light emitting element 22. Yes. FIG. 3 shows an exploded perspective view of the lighting device. For the light source unit 2, one side (the left side in the drawing) is shown in an exploded manner for explanation.

  The board | substrate 21 is formed in the elongate rectangular shape with materials, such as glass epoxy resin (FR-4) which is an insulating material. A wiring pattern layer made of copper foil is applied on the surface side. Further, a resist layer 21a is appropriately applied on the wiring pattern layer. A plurality of substrates 21, specifically, four substrates 21 are arranged in two rows on the heat radiating member 3 described later.

  The material of the substrate 21 is a ceramic material, a synthetic resin material, or an insulating layer on one surface of a base plate that has good thermal conductivity such as aluminum and has excellent heat dissipation in order to enhance the heat dissipation of each light emitting element 22. Can be applied, and the material is not particularly limited.

  On the surface layer of the substrate 21, the white resist layer 21 a having a high reflectance is laminated on almost the entire surface except for the mounting area of the light emitting element 22 and the mounting part of the components. As a result, among the light emitted from the light emitting element 22, the light directed in the lateral direction is reflected by the surface of the white resist layer 21 a having a high reflectance and is emitted to the front side.

  The plurality of light emitting elements 22 are LED bare chips. For example, an LED bare chip that emits blue light in order to cause white light to be emitted from the light emitting unit is used. The bare chip of this LED is bonded onto the wiring pattern layer using a silicone resin-based insulating adhesive, and is electrically connected to the wiring pattern layer by a bonding wire.

  The phosphor layer 23 is made of a translucent synthetic resin, for example, a transparent silicone resin, and contains an appropriate amount of a phosphor such as YAG: Ce. The phosphor layer 23 has a substantially cylindrical shape with a small height so as to cover each light emitting element 22 for each light emitting element 22. The phosphor is excited by light emitted from the light emitting element 22 and emits light having a color different from the color of light emitted from the light emitting element 22. In the present embodiment in which the light emitting element 22 emits blue light, a yellow phosphor that emits yellow light having a complementary color relationship with blue light is used for the phosphor so that white light can be emitted. Has been.

  The shape of the phosphor layer 23 is not particularly limited as long as the individual light emitting elements 22 can be covered, and a mountain shape or a line shape continuously covering the plurality of light emitting elements 22 may be applied. it can. Further, as the light emitting element, a surface mount type LED package may be used, and the mounting method and the type are not particularly limited.

The heat radiating member 3 is formed in a substantially rectangular shape, and is formed by applying white coating on a metal plate having thermal conductivity such as a hot dip galvanized steel plate. A pair of insertion holes 31 is formed on both ends of the heat radiating member 3 by being slightly bulged and deformed toward the back side by cutting. In addition, a wiring insertion hole 32 through which wiring such as a lead wire connected to the substrate 21 is inserted is formed at a substantially central portion of the heat radiating member 3. Further, on both sides of the heat radiating member 3 along the longitudinal direction, mounting pieces 33 are formed in the back direction.
The heat dissipating member 3 is disposed in surface contact with the back surface side of the substrate 21.

  As shown in FIGS. 1 to 6, the cover member 4 is made of an insulating material such as an acrylic resin or a polycarbonate resin, and is formed with milky white and translucency mixed with a diffusing agent. Yes. The cover member 4 has a chevron-shaped side surface and is formed in an arc shape, and end plates 41 are provided at openings at both ends in the longitudinal direction so as to close the openings. The end plate 41 is made of a milky white and translucent material similar to that described above. Further, flat attachment pieces 42 are formed on both sides of the cover member 4 along the longitudinal direction.

  As shown in FIGS. 3 to 6, the light source section 2, the heat radiating member 3, and the cover member 4 are combined to form one module M (see FIG. 6). Specifically, the heat radiation member 3 is attached so that the back surface side of the substrate 21 is in surface contact with the flat surface on the front surface side. Thereby, the substrate 21 is thermally coupled to the heat dissipation member 3. And the cover member 4 is arrange | positioned on the heat radiating member 3 so that the light source part 2 may be covered, and the cover member 4 is attached to the heat radiating member 3 with the cover support metal fitting 43. FIG.

  Specifically, the cover support metal 43 is bent and formed along the longitudinal direction, and is riveted and fixed to the attachment piece 33 of the heat radiating member 3 as representatively shown in FIG. Along with this fixing, the cover support bracket 43 sandwiches the flat mounting piece 42 of the cover member 4 with the heat radiating member 3.

  In the combination of the light source unit 3 and the cover member 4, for example, the cover member is formed by extrusion molding, and groove portions that open opposite to each other are provided on both sides along the longitudinal direction. The substrate or the heat radiating member to which the substrate is attached may be slid and inserted.

  Further, the cover member may be provided with a latching portion, and the latching portion may be latched and combined on the back side of the substrate. The combination structure of the light source unit 3 and the cover member 4 may be various configurations. Can take.

  As shown in FIG. 3 to FIG. 5, the support metal fitting 5 is provided as a pair, and is formed by bending a metal plate into a substantially U-shape, and has a rectangular fixed portion 51 and the fixed portion 51. And an extending portion 52 extending so as to stand up from both sides. A screw hole 51 a is formed at a substantially central portion of the fixing portion 51, and an attachment tongue 53 is formed at the distal end portion of the extending portion 52. The mounting tongue 53 is formed with an insertion portion 54 that is inserted into the insertion hole 31 formed in the heat dissipation member 3.

  As will be described later, the mounting tongue 53 functions as a first contact portion that is thermally coupled to the light source unit 2, and the fixing portion 51 is a second that is thermally coupled to the apparatus main body 1. It functions as a contact part.

  Next, the mounting state of the light source 2, that is, the support fitting 5 that supports the module M will be described mainly with reference to FIGS. 5 and 7. The support metal fitting 5 can be elastically deformed in the width direction on both attachment tongues 53 side at the distal end portion of the extension portion 52 to reduce the width dimension.

  Therefore, both the mounting tongue pieces 53 are elastically deformed so as to reduce the width dimension, the insertion portion 54 of the mounting tongue piece 53 is aligned with the position of the insertion hole 31 on the back surface side of the heat radiating member 3, and the elastic deformation is released to restore the original. Return to the state. Thereby, the attachment tongue piece 53 is inserted into the insertion hole 31, and the support fitting 5 is attached to the heat radiating member 3.

  In this state, the support bracket 5 is fixed to the light source unit support member 11 by the fixing means 6 from the back side of the apparatus body 1, that is, from the back side of the light source unit support member 11. The fixing means 6 is a mounting screw, which is passed through the mounting screw through hole 11d of the light source unit support member 11 via the mounting screw through hole 12c of the end plate member 12, and is further formed in the support fitting 5. Screw into the screw hole 51a.

  In this way, the light source unit 2 is attached to the apparatus main body 1. In this case, the mounting tongue 53 as the first contact portion of the support fitting 5 is in contact with the back side of the heat radiating member 3, and the fixing portion 51 as the second contact portion is the light source unit support member 11. It comes into contact with the rear wall 11a and is thermally coupled.

  As shown in FIGS. 3 and 4, the lighting device 7 is attached to the front surface side of the light source unit support member 11. The lighting device 7 controls the lighting of the light source unit 2 and is configured by housing a circuit board and circuit components mounted on the board in a box-like case, and is connected to a commercial AC power supply AC. In response to this AC power supply AC, a DC output is generated. The lighting device 7 is configured, for example, by connecting a smoothing capacitor between output terminals of a full-wave rectifier circuit, and connecting a DC voltage conversion circuit and current detection means to the smoothing capacitor. Therefore, the lighting device 7 is connected to the light emitting element 22 via the substrate 21, supplies the direct current output to the light emitting element 22, and controls the lighting of the light emitting element 22.

  The equipment plate 8 has a substantially rectangular flat plate shape, and is formed by white coating on a metal plate such as a hot dip galvanized steel plate. As representatively shown in FIG. 2, the equipment plate 8 is arranged in a space between the modules M. The equipment plate 8 includes a target equipment such as an emergency light, a speaker, and the like. Plates with smoke detectors and sprinklers are applied.

  In the illuminating device configured as described above, the support fitting 5 that supports the light source unit 2 is fixed by the fixing means 6 from the back side of the apparatus main body 1. Therefore, the fixing means 6 does not appear on the front side and can be avoided from being visually recognized from the front side. Further, since the light source unit 2 is attached to the apparatus main body 1 by the support fitting 5 that supports the light source unit 2, the number of fixing means 6 can be reduced, and the number of parts can be reduced to improve the assembly workability. Can be achieved.

  The light source unit 2 is thermally coupled from the light source unit 2 to the apparatus main body 1 through the heat dissipating member 3 and the support bracket 5. Specifically, heat is applied from the rear surface side of the substrate 21 to the apparatus main body 1 from the heat radiating member 3, the mounting tongue 53 as the first contact portion of the support metal 5, and the fixing portion 51 as the second contact portion. Conduction is performed and heat is released.

  Further, the heat radiating member 3 is grounded and grounded. That is, the heat radiating member 3 is connected to the support metal fitting 5, the fixing means 6, and the apparatus main body 1 and is connected to a ground wire (not shown). For this reason, for example, the danger of an electric shock due to the deterioration of the insulating property of the substrate 21 can be prevented.

  Here, in the connection between the heat radiating member 3 and the support metal 5, since a metal plate with a white coating is used for the heat radiating member 3, it is difficult to obtain conductivity with the support metal 5 by the coating.

  However, since the mounting tongue 53 of the support metal fitting 5 is inserted into the insertion hole 31 formed by cutting, it is possible to easily obtain electrical conductivity. That is, a cut surface that is not painted due to the formation of a cut in the metal plate is formed at the end edge of the insertion hole 31, and electrical conductivity is ensured by contact between the end edge and the mounting tongue 53 of the support metal 5. Will be able to.

  In addition, as shown in FIG. 9, the light source support member 11 has a substantially U-shaped side surface. For this reason, it is possible to arrange | position the light source part 2 to this light source part support member 11 as shown in FIG. 8, and an illuminating device can be comprised for 1 lamp | ramp.

  That is, the light source unit support member 11 shown in FIG. 8 is provided with the light source unit 2 and provided in the space where the equipment plate 8 shown in FIG. It is. Therefore, the light source support member 11 can be applied as a common component when the lighting device is configured for one lamp or two lamps.

  When power is supplied to the lighting device 7 in the installation state of the lighting device, a direct current output is supplied to the light source unit 2, the light emitting element 22 is energized through the substrate 21, and each light emitting element 22 is lit. The light emitted from the light emitting element 22 is transmitted through the phosphor layer 23, diffused through the milky white translucent cover member 4, and is mainly emitted downward to illuminate a predetermined light distribution range.

  When each light emitting element 22 is turned on, heat is generated. The heat generated from each light emitting element 22 is mainly conducted from the back side of the substrate 21 to the heat radiating member 3, conducted from the heat radiating member 3 to the support metal 5, and further conducted to the entire apparatus main body 1 to be radiated. Thereby, the temperature rise of the light emitting element 22 can be suppressed.

  As described above, according to the present embodiment, the fixing means 6 does not appear on the front side, and the design can be improved. In addition, it is possible to provide an illuminating device that can improve the assembly workability by reducing the number of parts and can effectively suppress the temperature rise of the light emitting element 22.

  Next, a second embodiment of the lighting device according to the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same or equivalent part as 1st Embodiment, and description may be abbreviate | omitted or simplified.

  The lighting device of this embodiment is a base light installed on a system ceiling of an office or the like, as in the first embodiment. In the first embodiment, the case where the four substrates 21 are arranged to constitute one module M has been described, but in this embodiment, the module M is configured for each substrate 21.

  The illuminating device includes an apparatus main body 1, a light source unit 2 disposed in the apparatus main body 1, a translucent cover member 4 that covers the light source unit 2, a support metal 5 that supports the light source 2, and a support metal And fixing means 6 for fixing 5. In addition, a lighting device (not shown) that controls lighting of the light source unit 2 and an equipment plate are provided.

  As representatively shown in FIG. 10, the apparatus main body 1 is a substantially square box-shaped chassis in which a rectangular opening is formed in a substantially central portion, and a metal having thermal conductivity such as a hot dip galvanized steel sheet. The plate is formed with a white coating to increase the reflectivity. In the apparatus main body 1, four modules M are arranged on both sides.

  As shown in FIGS. 12 to 15, the light source unit 2 includes a substrate 21, a plurality of light emitting elements 22 mounted on the substrate 21, and a phosphor layer 23 that covers each light emitting element 22.

  The board | substrate 21 is formed in the elongate rectangular shape with materials, such as glass epoxy resin (FR-4) which is an insulating material. A wiring pattern layer made of copper foil is formed on the surface side. Further, on the wiring pattern layer, that is, on the surface layer of the substrate 21, the white resist layer 21 a having a high reflectance is laminated on almost the entire surface except for the mounting region of the light emitting element 22 and the component mounting portion. .

Further, as shown in FIG. 15, a heat radiation layer 21 b that is electrically disconnected from the wiring pattern layer and formed of copper foil is applied to the surface side of the substrate 21. The heat dissipation layer 21b is formed on both sides along the longitudinal direction of the substrate 21, and the resist layer 21a is laminated. However, the heat dissipation layer 21b is exposed on both ends in the longitudinal direction without the resist layer 21a being laminated. An exposed portion 21c is formed. Also, solder plating or the like is applied to the surface of the exposed portion 21c.
The plurality of light emitting elements 22 are formed of LED bare chips, and the phosphor layer 23 is a translucent synthetic resin and contains an appropriate amount of phosphor.

As shown in FIGS. 10 to 13, the cover member 4 is made of an insulating material such as an acrylic resin or a polycarbonate resin, and is milky white and translucent and formed by extrusion. In the cross-sectional shape, the cover member 4 is formed in a circular arc shape on the front side and is formed in a circular shape on the back side, and has a cylindrical shape. Further, an insertion hole H into which a support fitting 5 described later is inserted is formed in the side wall of the cover member 4. Further, end plates 41 are provided at the openings at both ends in the longitudinal direction so as to close the openings.
In such a cover member 4, the light source unit 2 is inserted and arranged so as to slide from the openings at both ends.

  As shown in FIGS. 13B and 16, the support metal fitting 5 is formed by bending a metal plate into a substantially U-shape, and is a fixed portion that is curved so that the center portion is convex toward the front side. 51 and an extending portion 52 extended from both sides of the fixing portion 51 so as to stand up. A screw hole 51 a is formed in a substantially central portion of the fixing portion 51, and an attachment tongue piece 53 is formed at the distal end portion of the extending portion 52 toward the inner side. Here, the mounting tongue 53 functions as a first contact portion that is thermally coupled to the light source unit 2, and the fixing portion 51 is a second contact portion that is thermally coupled to the apparatus body 1. It is supposed to function as.

  Next, with reference to FIGS. 13A and 13B, a mounting state of the light source 2, that is, the support metal 5 that supports the module M will be described. First, as shown in FIG. 13 (b), the pair of attachment tongues 53 of the support metal fitting 5 are arranged in accordance with the insertion holes H formed in the side wall of the cover member 4.

  Next, an attachment screw as the fixing means 6 is inserted from the back side of the apparatus main body 1, and this attachment screw is screwed into a screw hole 51 a formed in the support fitting 5. As the mounting screw is screwed in, the fixing portion 51 of the support fitting 5 is elastically deformed into a flat shape, and the extending portion 52 is deformed so as to stand upright, and the mounting tongue 53 is inserted into the insertion hole H. It becomes like this.

  As shown in FIG. 13A, at the stage where the mounting screw has been screwed in, the mounting tongue 53 as the first contact portion of the support fitting 5 is in contact with the exposed portion 21 c of the substrate 21. The substrate 21 is thermally coupled to the substrate 21 and supports the substrate 21 by pressing it. Further, the fixing portion 51 as the second contact portion comes into contact with the apparatus main body 1 and is thermally coupled.

  When power is supplied to the lighting device 7 in the installed state of the lighting device, heat is generated by lighting each light emitting element 22. The heat generated from each light emitting element 22 is mainly conducted to the heat dissipation layer 21 b formed on the substrate 21. The heat conducted to the heat radiating layer 21b is conducted from the exposed portion 21c to the support fitting 5, and conducted to the entire device body 1 to be radiated. Thereby, the temperature rise of the light emitting element 22 can be suppressed.

  As described above, according to the present embodiment, as in the first embodiment, the fixing means 6 does not appear on the front side, and the design can be improved. Further, the number of parts can be reduced to improve the assembly workability, and the temperature rise of the light emitting element 22 can be effectively suppressed. In addition, since the mounting tongue 53 as the first contact portion of the support metal fitting 5 is pressed and supported on the surface side of the substrate 21, the configuration can be simplified.

  In addition, this invention is not limited to the structure of the said embodiment, A various deformation | transformation is possible in the range which does not deviate from the summary of invention. Moreover, the said embodiment is shown as an example and is not intending limiting the range of invention. For example, the light emitting element can be a solid light emitting element such as an LED or an organic EL.

DESCRIPTION OF SYMBOLS 1 ... Apparatus main body, 2 ... Light source part,
3 ... heat dissipation member, 4 ... cover member,
5 ... support bracket, 6 ... fixing means (mounting screw),
7 ... lighting device, 8 ... equipment plate,
21 ... substrate, 22 ... light emitting element (LED),
23 ... phosphor layer, 51 ... second contact part (fixed part),
53 ... 1st contact part (mounting tongue piece)

Claims (3)

The device body;
A light source unit having a substrate and a light emitting element mounted on the substrate and disposed in the apparatus main body;
A support fitting that supports the light source part and includes a first contact part that is thermally coupled to the light source part and a second contact part that is thermally coupled to the apparatus main body;
Fixing means for fixing the support fitting to the apparatus main body from the rear side of the apparatus main body through the second contact portion of the apparatus main body and the support fitting;
An illumination device comprising:   The lighting device according to claim 1, wherein a heat radiating member is thermally coupled to the substrate in the light source unit, and the heat radiating member is grounded via the support fitting.   The lighting device according to claim 1, wherein the substrate is supported by being pressed by a first contact portion of the support fitting.

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