JP2022141402A - Lighting device - Google Patents

Abstract

To provide a lighting device which can suppress a rise of a temperature of a power supply part which is arranged in a cylindrical cover.SOLUTION: A lighting device 10 comprises a cylindrical cover 30 having translucency at least at a front face side. A chassis 31 is inserted into the cover 30. A light source module 33 is attached to a front face side of the chassis 31. The light source module 33 is lit by a power supply part 34. An attachment member 74 has a back face part 75 for attaching the power supply part 34 thereto, and both-side side face parts 76 which are opposed with both-side faces of the power supply part 34. The attachment member 74 is arranged at a back face side of the chassis 31, and attaches both-side the side face parts 76 to the chassis 31. A heat transmission member 78 is interposed between a side face of the power supply part 34 and the side face parts 76 of the attachment member 74. A cap is arranged at an end part of the cover 30.SELECTED DRAWING: Figure 3

Description

Embodiments of the present invention relate to lighting devices that use tubular covers.

2. Description of the Related Art Conventionally, there is a lighting device in which a translucent tubular cover is used, a chassis having a light source module attached thereto is inserted through the cover, and caps are provided at both ends of the cover.

In such a lighting device, if the power supply unit electrically connected to the light source module is also arranged inside the cylindrical cover, the heat generated by the power supply unit during lighting tends to accumulate, and the power supply components of the power supply unit rises in temperature, which tends to affect the service life.

JP 2016-58266 A

A problem to be solved by the present invention is to provide a lighting device capable of suppressing a temperature rise of a power supply unit arranged in a cylindrical cover.

A lighting device according to an embodiment includes a cylindrical cover having translucency at least on the front side. Insert the chassis into the cover. Install the light source module on the front side of the chassis. The light source module is turned on by the power supply. The mounting member has a back surface portion for mounting the power supply unit and side surface portions facing both sides of the power supply unit. The mounting member is arranged on the rear side of the chassis, and the side portions on both sides are mounted on the chassis. A heat conducting member is interposed between the side surface of the power supply unit and the side surface of the mounting member. A cap is provided at the end of the cover.

According to the lighting device of the embodiment, it can be expected that the temperature rise of the power supply section arranged in the cylindrical cover can be suppressed.

1 is a perspective view of a lighting device showing an embodiment; FIG. It is a perspective view of the separation state of the fixture main body and light source unit of the lighting device same as the above. It is the end view which abbreviate|omitted the end part structure of the fixture main body same as the above, and a light source unit. It is a perspective view of the disassembled state of a light source unit same as the above. Fig. 3 is an exploded perspective view of the light source unit including the power supply section;

An embodiment will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, lighting device 10 is a ceiling lighting device. Furthermore, the lighting device 10 is an outdoor lighting device with a waterproof structure. In the following description, it is assumed that the lighting device 10 is installed on an installation surface such as a ceiling surface, and the front side in the light irradiation direction is the lower side, and the rear side opposite to the light irradiation direction is the upper side.

The lighting device 10 includes a fixture body 11 installed on an installation surface, and a light source unit 12 detachably attached to the lower side of the fixture body 11 . In the illumination device 10, both the fixture main body 11 and the light source unit 12 are elongated.

The instrument main body 11 has an elongated main body 15, end plates 16 provided at both longitudinal ends of the main body 15, and openings provided downward between the main body 15 and the end plates 16. It has an opening 17 .

The main body portion 15 has a top plate portion 18 and side plate portions 19 provided on both sides of the top plate portion 18 in the short direction crossing the longitudinal direction of the top plate portion 18. there is The top plate portion 18 is provided with a mounting hole (not shown) for mounting on the installation surface, a wiring hole (not shown) for drawing in a power cable, and the like.

The body portion 15 includes a reflecting surface portion 20 that is bent obliquely downward from the lower side of the side plate portion 19 toward the inside of the opening portion 17 , and a reflecting surface portion 20 that extends upward from the tip side of the reflecting surface portion 20 toward the inner surface side of the side plate portion 19 . It has a folded back portion 21 . The bending angle of the reflective surface portion 20 with respect to the side plate portion 19 is smaller than 90°, and the angle formed by the side plate portion 19 and the inner surface side of the reflective surface portion 20 is larger than 90°. The surface, which is the outer surface side, of the reflecting surface portion 20 is provided downward and facing obliquely outward, opposite to the opening portion 17 side. Further, the bending angle of the folded portion 21 with respect to the reflecting surface portion 20 is larger than 90°, and the angle formed by the reflecting surface portion 20 and the inner surface side of the folded portion 21 is smaller than 90°.

A notch 22 into which a part of the light source unit 12 is inserted is provided on both end sides of the body portion 15 at a position a predetermined distance from the end sides of the reflecting surface portion 20 and the folded portion 21 toward the center.

The end plate 16 has an end plate portion 23 that covers the end surface of the main body portion 15 and an attachment portion 24 for attaching the light source unit 12 . The end plate portion 23 is attached to the end portion of the body portion 15 . The attachment portion 24 is formed integrally with the end plate portion 23 , is bent from the lower side of the end plate portion 23 toward the main body portion 15 side, and is disposed on the end portion side of the opening portion 17 . The mounting portion 24 is provided with a mounting hole 25 for screwing the light source unit 12 and a hook portion 26 for temporarily hanging the light source unit 12 .

Next, as shown in FIGS. 1 to 5, the light source unit 12 has a waterproof structure. The light source unit 12 has an insertion area 12a that is inserted into the opening 17 of the instrument main body 11 on the upper side, which is one side in the vertical direction that intersects the longitudinal direction, and a protrusion that is arranged on the other side, the lower side, on the outside of the instrument body 11. It is configured as a region 12b.

The light source unit 12 includes a cylindrical cover 30, a chassis 31 as a support member inserted through the cover 30, connecting members 32 attached to both ends of the chassis 31, a light source module 33 attached to the chassis 31, and a power supply unit. 34, packings 35 and caps 36 attached to both ends of the cover 30, and the like.

The cover 30 is long and formed in a tubular shape having the same shape in the longitudinal direction. The cover 30 has an opaque portion 30a, which is an opaque portion that does not transmit light, on the upper side corresponding to the insertion region 12a, and a translucent portion, which is a transmissive portion that transmits light, on the lower side corresponding to the projecting region 12b. A portion 30b is provided.

The opaque portion 30a is made of a resin material that does not transmit light. The opaque portion 30a includes a top surface portion 40, side portions 41 projecting downward from both sides in the short direction of the top surface portion 40, and projects toward the inside of the cover 30 between the side portions 41 and the translucent portion 30b. It has a bent portion 42 that The bent portions 42 are bent from both sides of the light-transmitting portion 30b on the back side of the light-transmitting portion 30b and abut on both sides of the chassis 31 . The bent portion 42 includes an upper step portion 43 projecting from the lower side of the side portion 41 toward the inside of the cover 30, a lower step portion 44 projecting inside the cover 30 from the translucent portion 30b, and the upper step portion 43 and the lower step portion 44 projecting toward the inside of the cover 30 from the translucent portion 30b. An inner protruding surface portion 45 protruding toward the inside of the cover 30 is provided between the side step portions 44 . The bent portions 42 form concave portions 46 on both sides of the cover 30 along the longitudinal direction. Chassis 31 and power supply section 34 are arranged inside opaque section 30a. A bent portion 42 abuts on a portion of the chassis 31 arranged inside the opaque portion 30a.

The translucent portion 30b is made of a resin material that transmits light. The translucent portion 30 b is formed in a convex curved shape with the center protruding downward, and both sides in the short direction are continuous with the lower step portion 44 of the bent portion 42 . The width of the translucent portion 30b in the lateral direction is wider than the width of the non-translucent portion 30a in the lateral direction. A light source module 33 is arranged inside the translucent portion 30b.

The cover 30 is integrally formed by two-color molding of the opaque portion 30a and the translucent portion 30b. That is, the cover 30 is integrally formed by extrusion molding in which the molten resin material of the opaque portion 30a and the molten resin material of the translucent portion 30b are extruded.

The boundary between the opaque portion 30a and the translucent portion 30b is located between the end of the direct portion of the lower stepped portion 44 of the opaque portion 30a and the end of the direct portion of the lower stepped portion 44. It is set between the curved portions of the continuous light-transmitting portions 30b. A reflective surface portion of the instrument main body 11 is provided at the boundary between the non-transparent portion 30a and the translucent portion 30b, or at the portion slightly entering the non-translucent portion 30a side from the boundary portion between the non-transparent portion 30a and the translucent portion 30b. The tip side of 20 (the bent portion between reflecting surface portion 20 and folded portion 21) is brought into contact.

Also, the chassis 31 is made of metal and formed to be long. The chassis 31 has a substantially U-shaped cross section that opens upward. The chassis 31 has a mounting surface portion 50 and side portions 51 provided by bending upward from both sides of the mounting surface portion 50 in the short direction. A light source module 33 is attached to the front side of the attachment surface portion 50 .

The side surface portion 51 includes lower side surface portions 51a that are bent upward from both sides of the mounting surface portion 50, inclined surface portions 51b that are widened and inclined upward from the lower side surface portions 51a on both sides so as to separate from each other, and inclined surface portions 51b on both sides. It has a side upper portion 51c that is bent upward. A power supply unit 34 is arranged between the side surface portions 51 on both sides. The inclined surface portion 51b is inclined along the outer shape of the power source portion 34 and may be separated from or in contact with the power source portion 34 .

A convex portion 52 projecting downward from between the side portions 51 on both sides is formed by the mounting surface portion 50, the side lower portion 51a, and the like. The convex portion 52 is arranged between the bent portions 42 on both sides of the cover 30 so as to protrude toward the translucent portion 30b. Between the rear side of the convex portion 52 (mounting surface portion 50), which is the rear side of the mounting position where the light source module 33 is mounted, and the front side of the power supply portion 34 arranged between the side portions 51 on both sides, wiring is provided. A space portion 53 that is also a space is provided. The space 53 between the rear side of the convex portion 52 (mounting surface portion 50) and the power supply portion 34 has a dimension that enables wiring of a cable or the like.

The connecting member 32 is made of metal and is attached to the end of the chassis 31 so as to cover the end surface of the chassis 31 . As a mounting structure of the connecting member 32 to the end portion of the chassis 31, any of locking by a claw structure, screwing, and the like may be used. The connecting member 32 is shaped and dimensioned to be inserted inside the cover 30 .

The connecting member 32 is provided with a plurality of mounting holes 60 for screwing the cap 36 and wiring holes 61 through which a lead-out cable connected to the power source section 34 is inserted.

The light source module 33 also includes a long board 70 and a plurality of light emitting elements 71 mounted on the board 70 along the longitudinal direction. The light-emitting element 71 may be an LED, an organic EL, or the like. The light source module 33 is attached to the front side of the attachment surface portion 50 of the chassis 31 and is electrically connected to the output side of the power supply portion 34 attached to the same chassis 31 by connection wiring (not shown).

The power supply unit 34 also includes an elongated power supply case 73 and a power supply circuit (not shown) arranged in the power supply case 73 . The power supply case 73 has a substantially trapezoidal cross-section with inclined surfaces 73b at both corners of a front surface 73a. The power supply circuit converts external power such as AC power supplied from the outside into predetermined lighting power such as DC power, supplies the light source module 33 with the power, and lights the light emitting element 71 .

The power supply circuit has a power supply board and a plurality of power supply components mounted on the power supply board, the solder surface of the power supply board facing the rear surface 73c of the power supply case 73, and the component surface facing the front surface 73a of the power supply case 73. It is housed within the power supply case 73 as shown. Among the power supply components that make up the power supply circuit, the switch element for power conversion is a heat-generating component that generates heat at a higher temperature than the other power supply components. 73d. The front surface 73 a and side surfaces 73 d of the power supply case 73 are also referred to as the front surface 73 a and side surfaces 73 d of the power supply section 34 .

The power supply unit 34 is attached to the rear side of the chassis 31 by an attachment member 74 . The mounting member 74 has a rear surface portion 75 and side surface portions 76 provided on both sides of the rear surface portion 75 in the short direction, and is formed to have a substantially U-shaped cross section opening downward. The power supply section 34 is attached to the lower surface side of the back surface section 75 by screwing or the like, and the side surfaces 76 on both sides and the side surfaces 73d of the power supply section 34 are arranged to face each other with a predetermined gap therebetween. The power supply section 34 is arranged between the sections 76 . The side portions 76 on both sides of the mounting member 74 are attached to the side portions 51 (side upper portions 51c) on both sides of the chassis 31 and are also thermally connected. As for the mounting structure of the mounting member 74 to the chassis 31, either locking by a claw structure or screwing may be used. In a state in which the mounting member 74 is attached to the chassis 31, the power supply unit 34 is arranged between the side surface portions 51 on both sides along the longitudinal direction of the chassis 31, and the inclined surface 73b of the power supply unit 34 (power supply case 73) faces the chassis. 31 is in contact with or opposed to the inclined surface portion 51b. Further, the front surface portion 73a of the power supply unit 34 is located on the rear side of the mounting position where the light source module 33 is mounted on the chassis 31, and the rear surface side of the convex portion 52 (mounting surface portion 50) is interposed through the space portion 53. Opposed.

A plurality of spherical protrusions 77 protrude from the rear surface portion 75 of the mounting member 74 . Then, in a state in which the mounting member 74 and the like are inserted into the cover 30 together with the chassis 31 , the projecting portion 77 of the mounting member 74 is brought into contact with the top surface portion 40 of the cover 30 , and the inclined surface portion 51 b of the chassis 31 is pushed into the cover 30 . , the chassis 31 side and the cover 30 side are positioned relative to each other.

Further, between the side surface 73d of the power supply section 34 and the side surface section 76 of the mounting member 74, a heat conducting member 78 is thermally connected to the side surface 73d of the power supply section 34 and the side surface section 76 of the mounting member 74, respectively. intervened. The heat-conducting member 78 is arranged so as to come into contact with a high-temperature portion of the side surface 73d of the power supply section 34, where the heat-generating components among the power-supply components are thermally connected via heat-dissipating components and tend to reach high temperatures. . In this embodiment, the heat conducting member 78 is interposed between one side surface 73 d of the power source section 34 and one side surface portion 76 of the mounting member 74 .

The thermally conductive member 78 uses, for example, a thermally conductive sheet having high thermal conductivity and elasticity. The heat-conducting member 78 has a rectangular shape elongated along the longitudinal direction of the side surface 73d of the power supply unit 34, and is thicker than the gap between the side surface 73d of the power supply unit 34 and the side surface 76 of the mounting member 74. It is said that Therefore, the heat conducting member 78 is compressed while being interposed between the side surface 73 d of the power supply section 34 and the side surface section 76 of the mounting member 74 . are pressed against each other.

The heat-conducting member 78 may have an intermediate material such as a metal foil tape with low frictional resistance on the surface of the sheet body. For example, the power supply unit 34 is inserted between the side surfaces 76 on both sides of the mounting member 74 in a state in which one surface side of the heat conducting member 78 is placed on the side surface 73d of the power supply unit 34 (which may be fixed by adhesion or the like). In this case, the intermediate material on the other side of the heat-conducting member 78 is in contact with the inner surface of the side surface portion 76 of the mounting member 74 , and the power source section 34 is placed between the side surface portions 76 on both sides of the mounting member 74 without the heat-conducting member 78 being caught. It can be easily inserted, and the assembling property can be improved. When inserting the power supply section 34 between the side surfaces 76 of the mounting member 74 with the heat conducting member 78 disposed on the side surface section 76 of the mounting member 74, the power supply section 34 of the heat conducting member 78 An intermediate member may be placed on the surface facing the .

Note that the heat conducting member 78 may be provided over the entire length of the side surface 73d of the power source section 34 . Furthermore, the heat conducting members 78 may be interposed between the side surfaces 73 d on both sides of the power supply section 34 and the side surfaces 51 on both sides of the chassis 31 . Also, the heat conducting member 78 may be made of a metal plate such as copper, aluminum, or stainless steel.

Also, the packing 35 is integrally formed of, for example, silicone rubber. The packing 35 is formed in a shape similar to the end shape of the cover 30 . A ring-shaped insertion portion 80 that is inserted into and adheres to the inside of the cover 30 is formed in the peripheral portion of the packing 35, and a flange portion 81 that is in contact with and adheres to the end portion of the cover 30 is formed on the end portion side of the insertion portion 80. It is A partition wall portion 82 is formed inside the packing 35 . The partition wall portion 82 is formed with a plurality of screw insertion portions 83 and a wiring insertion portion 84 . The plurality of screw insertion portions 83 and wire insertion portions 84 are formed corresponding to the respective positions of the plurality of mounting holes 60 and wiring holes 61 of the connecting member 32 .

Also, the cap 36 is made of, for example, a resin material. The cap 36 has a cap portion 90 attached to the outer periphery of the end portion of the cover 30 via the packing 35 and a cap cover portion 91 provided on the end portion side of the cap portion 90 .

The cap portion 90 is formed in a shape similar to the shape of the end portion of the cover 30 . That is, the cap portion 90 has an upper portion formed in a shape corresponding to the upper opaque portion 30a of the cover 30, and a lower portion formed in a shape corresponding to the lower translucent portion 30b of the cover 30. Recesses 92 corresponding to the recesses 46 on both sides of the cover 30 are formed on both sides between the side and the bottom side.

The cap portion 90 has a cap surface portion 93 and a fitting portion 94 that protrudes from the periphery of the cap surface portion 93 toward the cover 30 and is fitted to the outer periphery of the end portion of the cover 30 . A packing 35 is interposed between the cap portion 90 and the end of the cover 30 , and the packing 35 seals the end opening of the cover 30 .

The cap surface portion 93 of the cap portion 90 is provided with screw insertion holes and wiring holes 95 (not shown) corresponding to the positions of the plurality of screw insertion portions 83 and wiring insertion portions 84 of the packing 35 .

The cap portion 90 is a stepped portion that protrudes from the outer periphery of the cover 30 so as to be fitted to the outer periphery of the end portion of the cover 30 . Due to this stepped portion, the space between both sides of the cap portion 90 (cap 36 ) is formed wider than the space between the lower portions of the side plate portions 19 on both sides of the tool body 11 . Then, when the light source unit 12 is attached to the instrument main body 11 , the stepped portions on the lower edge side of the concave portions 92 on both sides of the cap portion 90 are configured to enter the cutout portions 22 of the instrument main body 11 .

The cap cover portion 91 protrudes from the end portion side of the cap portion 90 in the projecting region 12b and is formed in a shape that is continuous with the surface shape of the cap portion 90 . A concave portion 96 that opens upward is formed inside the cap cover portion 91 so as to face the instrument main body 11 . An operation hole 97 is provided on the lower surface of the cap cover portion 91 . A bush 98 that closes the operation hole 97 is detachably attached to the operation hole 97 . A drain hole 99 is formed in the lower portion of the end face of the cap cover portion 91 . The recessed portion 96 is used as a space for arranging attachment parts and the like.

A mounting plate 110 is attached to the cap 36 . The mounting plate 110 is made of, for example, a metal plate and has a substantially L-shaped cross section. The mounting plate 110 has a first mounting plate portion 111 arranged on the outer end surface side of the cap surface portion 93 and a second mounting plate portion 112 arranged on the cap cover portion 91 . A plurality of connecting screws 113 are inserted through the first mounting plate portion 111 , and these screws 113 are screwed into the mounting holes 60 of the connecting member 32 through the screw insertion portions 83 of the packing 35 . Also, the second mounting plate portion 112 is arranged on a rib 114 provided inside the recessed portion 96 of the cap cover portion 91 . A screw 115 , which is an attachment component for attaching the light source unit, is rotatably attached to the second attachment plate portion 112 . The screw 115 can be rotated by a tool inserted through the operation hole 97 of the cap cover portion 91 . The screw 115 is screwed into the mounting hole 25 of the mounting portion 24 of the instrument body 11 to fix the light source unit 12 to the instrument body 11 .

Further, the cap 36 is attached with a hanging metal fitting 120 which is a mounting part for temporarily hanging the light source unit 12 on the fixture main body 11 . The sling fitting 120 is formed of a metal wire rod. Bent portions 121 that are bent in an arc shape are provided at both ends of the hanger 120 . One end of the hanger 120 is connected to the second mounting plate portion 112 of the mounting plate 110 , and the other end is detachably hooked to the hook portion 26 of the mounting portion 24 of the device main body 11 .

In order to assemble the light source unit 12 in the illumination device 10 configured as described above, the chassis 31 to which the light source module 33, the power supply section 34, the mounting member 74, and the connecting member 32 are mounted is placed inside the cover 30 (opaque). (inside the optical section 30a). At this time, the protruding portion 77 of the mounting member 74 that mounts the power supply portion 34 to the chassis 31 is brought into contact with the top surface portion 40 of the cover 30, and the inclined surface portion 51b of the chassis 31 is brought into contact with the bent portion 42 of the cover 30, The chassis 31 side and the cover 30 side are positioned relative to each other.

The insertion part 80 of the packing 35 is inserted into the end opening of the cover 30 . The cap portion 90 of the cap 36 is fitted to the outer circumference of the end portion of the cover 30 via the packing 35 . Mounting plate 110 , screws 115 , and hanger 120 are incorporated into cap 36 , and a plurality of screws 113 are screwed into connecting member 32 through mounting plate 110 , cap portion 90 , and packing 35 , and between cover 30 and cap portion 90 . The packing 35 is sandwiched and fixed by tightening, and the end opening of the cover 30 is sealed with the packing 35 . When the connecting member 32 , the packing 35 and the cap 36 are assembled, the lead-out cable from the power supply section 34 is inserted through the wiring insertion portion 84 of the packing 35 and is led out from the cap portion 90 of the cap 36 .

The order in which the light source unit 12 is assembled is not limited to this order. good. Also, the connecting member 32, the packing 35 and the cap 36 are attached in advance to one end of the chassis 31, the other end of the chassis 31 is inserted into the cover 30, and the packing 35 on the one end is brought into close contact with the one end of the cover 30. At the same time, the connecting member 32 , the packing 35 and the cap 36 may be attached to the other end of the chassis 31 .

In the light source unit 12, both end openings of the cover 30 are sealed with packings 35 to ensure a waterproof structure.

Next, in order to install the lighting device 10, the fixture main body 11 is installed on an installation surface such as a ceiling surface. At this time, the power cable is drawn into the instrument main body 11. - 特許庁

The hanging metal fittings 120 attached to the caps 36 at both ends of the light source unit 12 are hooked to the hook portions 26 provided at the attachment portions 24 at both ends of the fixture body 11 to temporarily hang the light source unit 12 below the fixture body 11. - 特許庁.

Through the gap between the temporarily suspended light source unit 12 and the fixture main body 11, the drawer cable drawn out from the light source unit 12 is electrically connected to the power cable drawn into the fixture main body 11.例文帳に追加A terminal block arranged in the instrument body 11 may be used for electrical connection of these cables.

The insertion area 12a on the upper side of the light source unit 12 is inserted into the opening 17 of the instrument main body 11, a tool is inserted through the operation hole 97 of the cap 36 of the light source unit 12, and the screw 115 is screwed into the mounting portion 24 of the instrument main body 11. Then, the light source unit 12 is attached to the fixture main body 11 . The bushing 98 is fitted into the operation hole 97 to complete the installation.

When the light source unit 12 is attached to the device main body 11, the cap portion 90 of the cap 36 is fitted to the outer periphery of the end portion of the cover 30 of the light source unit 12, and there is a step so that the cap portion 90 protrudes from the surface of the cover 30. The step portion of the cap portion 90 enters the notch portion 22 provided in the fixture body 11, so that the light source unit 12 approaches the fixture body 11 and the gap between the light source unit 12 and the fixture body 11 is reduced. . This reduces the amount of light that enters the inside of the instrument body 11 .

Further, when the external power is supplied to the power supply unit 34, the lighting power converted from the external power by the power supply unit 34 is supplied to the light source module 33, the light emitting element 71 of the light source module 33 is lit, and the light emitted by the light emitting element 71 is turned on. passes through the cover 30 and exits to the outside.

The cover 30 has a non-translucent portion 30a and a translucent portion 30b. Even if part of the light from the element 71 is reflected on the inner surface of the translucent portion 30b of the cover 30 and directed toward the opaque portion 30a, the light does not leak from the opaque portion 30a into the instrument body 11. is reflected on the inner surface of the non-light-transmitting portion 30a toward the light-transmitting portion 30b, and is easily emitted to the outside from the light-transmitting portion 30b.

The light emitted upward from the surfaces of the curved side portions of the translucent portion 30b, which is the boundary with the non-translucent portion 30a of the cover 30, is reflected by the reflective surface portion 20 of the instrument main body 11 to the side of the translucent portion 30b. Since the light is reflected toward the area, it is possible to reduce the amount of light entering the device main body 11 and toward the translucent portion 30b, thereby improving the light extraction efficiency. In addition, since the folded portion 21 is provided on the distal end side of the reflecting surface portion 20 of the instrument body 11, when handling the instrument body 11, for example, a worker's finger or the like may touch the tip side of the folded portion 21, which is the cut portion of the metal plate. It can be difficult to touch.

Further, during lighting, the heat generated by the light emitting element 71 is mainly transferred to the chassis 31, and the heat generated by the power supply section 34 is mainly transferred to the chassis 31 through the mounting member 74, and further transferred to the chassis 31. The heat generated is transmitted from both ends of the chassis 31 to the cap 36 side through the connecting member 32, the plurality of screws 113, the mounting plate 110, and the like, and is radiated to the device main body 11, the air, and the like.

Of the heat generated by the power source 34 , part of the heat transmitted to the side surface 73 d is transmitted to the side surface portion 51 of the chassis 31 through the heat conducting member 78 . The heat-conducting member 78 is arranged so as to come into contact with a high-temperature portion of the side surface 73d of the power supply section 34, where the heat-generating components among the power-supply components are thermally connected via heat-dissipating components and tend to reach high temperatures. Therefore, the heat of the power supply section 34 is effectively transferred to the chassis 31 .

In addition, in the lighting device 10 of the present embodiment, the heat conduction member 78 is interposed between the side surface 73d of the power supply unit 34 and the side surface portion 76 of the mounting member 74, so that the heat generated by the power supply unit 34 can be efficiently dissipated. The heat can be transferred to the mounting member 74 to escape to the chassis 31 , and the temperature rise of the power source section 34 arranged inside the cylindrical cover 30 can be suppressed.

The temperature of the mounting member 74 is most likely to rise at the back surface portion 75 due to the heat from the power supply unit 34, and the temperature of the chassis 31 is most likely to rise at the mounting position where the light source module 33 is mounted. The heat of the power supply unit 34 is transferred by the heat conducting member 78 between the easy-to-reach places and at a position laterally away from the center line connecting the center of the power supply unit 34 in the short direction and the center of the light source module 33 in the short direction. can be transmitted to the side surface portion 76 of the mounting member 74 and can be transmitted from the side surface portion 76 of the mounting member 74 to the side surface portion 51 of the chassis 31, so that the heat of the power supply section 34 can be effectively radiated.

In addition, since the space 53 is provided between the rear side of the mounting position where the light source module 33 is mounted on the front side of the chassis 31 and the front side of the power supply section 34, the light source module 33 and the power supply section 34 are separated from each other. It is possible to suppress the occurrence of thermal influence on each other between

Furthermore, since the chassis 31 and the power supply section 34 are arranged in a limited space inside the cover 30, the wiring space for wiring the light source module 33 and the power supply section 34 is also limited. The space 53 provided between the power source section 34 and the front side can be effectively used as a wiring space.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

REFERENCE SIGNS LIST 10 lighting device 30 cover 31 chassis 33 light source module 34 power supply unit 36 cap 53 space portion 74 mounting member 75 rear surface portion 76 side surface portion 78 heat conduction member

Claims (2)

a cylindrical cover having translucency at least on the front side;
a chassis inserted into the cover;
a light source module mounted on the front side of the chassis;
a power supply for lighting the light source module;
A mounting member having a rear portion to which the power supply unit is mounted and side portions on both sides opposed to both side surfaces of the power supply unit, the mounting member being disposed on the rear side of the chassis and having the side portions on both sides mounted to the chassis. When;
a heat conducting member interposed between the side surface of the power supply unit and the side surface portion of the mounting member;
a cap provided at the end of the cover;
A lighting device comprising: 2. The lighting device according to claim 1, wherein a space is provided between the rear side of the mounting position where the light source module is mounted on the front side of the chassis and the front side of the power supply section.

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