JP6179050B2 - Lighting device - Google Patents

Description

  The present invention relates to an illumination device used as a street lamp or the like outdoors.

  2. Description of the Related Art Conventionally, an illumination device is known that includes an optical sensor that senses ambient brightness and has a light source unit having an automatic blink function. For example, in a security light as a lighting device, control is performed such that the light source unit automatically turns on when the surroundings become dark and automatically turns off when the surroundings become bright. As such an illuminating device, an illuminating device using a light emitting element such as a light emitting diode (hereinafter referred to as “LED”) as a light source is conventionally known, and is disclosed in Patent Document 1, for example.

  The illumination device (security light) described in Patent Literature 1 includes a light source unit, a mounting member to which the light source unit is attached, a lighting device that controls lighting of the light source unit, and a light-transmitting cover that covers the light source unit and the lighting device. A member. The lighting device includes a base portion that closes the opening of the cover member and an arm that is attached to the base portion. And this illuminating device is attached to poles, such as a utility pole installed in the road surface by the arm.

  In this illuminating device, when the outdoors becomes dark, power is supplied to the light source unit via the lighting device by the detection output of the optical sensor of the lighting device, and the light emitting element is turned on. Further, when the outdoors becomes bright, power is cut off by the detection output of the optical sensor, and the light emitting element is turned off.

JP 2012-216477 A

  However, in the above conventional example, the heat generated by the light emitting element is dissipated to the outside air through the mounting member by attaching the substrate on which the light emitting element is mounted to the mounting member made of a material having good thermal conductivity such as aluminum. ing. That is, since an attachment member is required to dissipate the heat generated by the light emitting element, there is a problem that the cost increases. Further, since a space for arranging the mounting member is required, there is a problem that the apparatus is enlarged.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an illumination device that can dissipate heat generated by a light emitting element while reducing costs and downsizing the device.

  The illumination device according to the present invention includes a light source formed by mounting a light emitting element on a substrate, a metal arm attached to a support column installed on the ground, and the light source and a part of the arm supported by the arm. And the arm includes a support portion that supports the housing, a support mounting portion that is attached to the support, and a substrate mounting portion that attaches the substrate.

  In this illuminating device, it is preferable that the substrate mounting portion is formed in a shape in which a part in contact with the substrate protrudes toward the substrate from other portions.

  In this lighting device, the substrate has a mounting hole for inserting a mounting screw for screwing to the substrate mounting portion, and the mounting hole is formed by cutting out a part of the outer peripheral edge of the substrate. Is preferred.

  In this illuminating device, it is preferable that the support portion also serves as the substrate attachment portion, and the support portion has a width dimension larger than a width dimension of the column attachment portion.

  In the present invention, by directly attaching a light source substrate to a metal arm, heat generated by the light emitting element is radiated to the outside air via the arm. Therefore, in the present invention, it is not necessary to use a heat radiating attachment member as in the prior art, and heat generated by the light emitting element can be radiated while reducing costs and downsizing the apparatus.

It is a disassembled perspective view which shows embodiment of the illuminating device which concerns on this invention. (A) is a cross-sectional view of the illuminating device of the above, (b) is a plan view of the illuminating device with the cover removed, (c) is a plan view of the illuminating device with the cover attached. is there. It is a figure which shows the state which attached the illuminating device same as the above to the support | pillar. It is a figure which shows the light source in an illuminating device same as the above, (a) is a top view, (b) is a side view. It is a figure which shows the lens unit in an illuminating device same as the above, (a) is a top view, (b) is a side view. It is a figure which shows the body in an illuminating device same as the above, (a) is the top view seen from the inner side, (b) is the top view seen from the outer side, (c) is sectional drawing which shows an inner wall. It is a figure which shows the cover in an illuminating device same as the above, (a) is a top view, (b) is sectional drawing, (c) is sectional drawing of the state which couple | bonded the body and the cover. It is a figure which shows the arm in an illuminating device same as the above, (a) is a top view, (b) is a side view. It is a principal part perspective view of the arm in an illuminating device same as the above. It is sectional drawing which looked at the support part of the arm in an illuminating device same as the above from the front end side.

  Hereinafter, an embodiment of a lighting device according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the present embodiment includes a light source 1, a lens unit 2, a body 3, a cover 4, an arm 5, and a power supply unit 6. In the present embodiment, the body 3 and the cover 4 are combined to form a housing that houses the light source 1, the lens unit 2, and a part of the arm 5 (a support portion 5 </ b> A described later). In addition, as shown in FIG. 3, the present embodiment can be used as a street light by being attached to a column A1 (for example, a steel pipe pole or a utility pole) installed on the ground such as a side of a road (not shown). .

  As shown in FIGS. 4A and 4B, the light source 1 includes a plurality of (eight in the figure) LEDs (light emitting elements) 10 on the surface of a long substrate 11 (the lower surface in FIG. 4B). To implement. Each LED 10 is formed, for example, by sealing an LED chip that emits blue light with a sealing member made of a synthetic resin that has translucency and is mixed with a fluorescent material. Accordingly, a part of the light emitted from the LED chip is wavelength-converted by the fluorescent material, and the wavelength-converted light (for example, yellow light) and the light that has not been wavelength-converted (blue light) are mixed. White light is emitted. Of course, each LED 10 is not limited to one that emits white light, and may emit light that is different from white, such as blue.

  In the present embodiment, the LEDs 10 are mounted at regular intervals along the longitudinal direction of the substrate 11 (the left-right direction in FIG. 4B). A conductor 12 serving as a power feeding path to each LED 10 is printed on the surface of the substrate 11. In addition, although omitted in the drawing, in practice, the conductor 12 is patterned so that the LEDs 10 are connected in series, parallel, or series-parallel. Furthermore, a terminal block 13 that is electrically connected to the conductor 12 is mounted on one end in the longitudinal direction of the surface of the substrate 11 (left end in FIG. 4B). One end of a lead wire 130 is connected to the terminal block 13. In addition, a plug 131 for connecting to a receptacle 600 of the power supply unit 6 described later is provided at the other end of the lead wire 130.

  On both sides along the longitudinal direction of the substrate 11, a plurality (four in the drawing) of mounting holes 110 are formed in a semicircular shape. The light source 1 can be fixed to the arm 5 by superimposing each mounting hole 110 on each mounting hole 500 of the arm 5 described later and tightening the mounting screw S1.

  On the back surface of the substrate 11 (the upper surface in FIG. 4B), a long copper foil 14 is provided along the longitudinal direction. The copper foil 14 is electrically insulated from the conductor 12. When the substrate 11 and the arm 5 are in contact with each other through the copper foil 14, the heat generated by each LED 10 is efficiently conducted to the arm 5. Of course, a foil other than the copper foil 14 may be provided on the back surface of the substrate 11 as long as the heat generated by each LED 10 can be efficiently conducted to the arm 5. Needless to say, even if the copper foil 14 is not provided, the heat generated by each LED 10 can be conducted to the arm 5.

  The lens unit 2 is a resin molded product made of a resin material such as PMMA resin, for example, and determines the light distribution of the light emitted from each LED 10. As shown in FIGS. 5A and 5B, the lens unit 2 includes a plurality of (eight in the drawing) lenses 20 corresponding to the LEDs 10 and a long mounting plate in which the lenses 20 are integrally formed. 21. In the present embodiment, the lenses 20 are integrally formed with a certain interval along the longitudinal direction of the mounting plate 21 (the left-right direction in FIG. 5A).

  Each lens 20 includes a lens body 200 and a pair of reflecting portions 201 and 202, respectively. The lens body 200 is formed in a bullet shape having a curved surface that is convex in the direction of light emitted from each LED 10. The lens body 200 has a light distribution characteristic that spreads the light emitted from each LED 10 along the width direction of the lens unit 2 (vertical direction in FIG. 5A).

  On both sides of the lens body 200 (right and left sides in FIG. 5A), prismatic reflecting portions 201 and 202 are integrally formed, respectively. Each of the reflecting portions 201 and 202 has a light distribution characteristic that reflects light emitted from each LED 10 and suppresses spreading in the longitudinal direction of the lens unit 2 (left and right direction in FIG. 5A).

  As described above, this embodiment is used by being installed, for example, on the roadside column A1. In this case, it is desirable to irradiate light at a wide angle along the traveling direction of the vehicle on the road. In this case, in order to avoid unnecessary light irradiation, it is desirable to suppress light irradiation outside the road in the width direction of the road. Here, in the present embodiment, by using the lens unit 2, it is possible to realize a wide-angle light distribution in the traveling direction of the vehicle on the road, and to suppress the irradiation of light outside the road in the width direction of the road. it can.

  Between the adjacent lenses 20 on the mounting plate 21, a light shielding portion 203 that shields light emitted from each LED 10 is provided. These light shielding portions 203 can suppress interference of light between adjacent lenses 20. Further, a through hole 210 for passing the terminal block 13 of the substrate 11 is provided at one end in the longitudinal direction of the mounting plate 21 (left end in FIG. 5A).

  On both sides along the longitudinal direction of the mounting plate 21, a plurality (two in the drawing) of mounting pieces 22 projecting outward in the width direction of the mounting plate 21 (vertical direction in FIG. 5A) are integrated. Is formed. On one side along the longitudinal direction of each mounting piece 22 (the left-right direction in FIG. 5A), a mounting hole 220 is cut out in a semicircular shape. The lens unit 2 is fixed to the arm 5 so as to cover the light source 1 by overlaying each mounting hole 220 on each mounting hole 110 of the substrate 11 and each mounting hole 500 of the arm 5 to be described later and tightening with the mounting screw S1. be able to.

  The body 3 is a box-shaped resin molded product made of, for example, a resin material such as ASA resin, and one surface thereof (the lower surface in FIG. 6C) is open. As shown in FIGS. 6A to 6C, the body 3 has a rectangular main portion 30 and a thickness direction (vertical direction in FIG. 6C) along the entire circumference of the main portion 30. And an outer wall 31 that falls. The body 3 includes an inner wall 32 that falls from the main portion 30 along the thickness direction inside the outer wall 31 and in parallel with the outer wall 31. Between the outer wall 31 and the inner wall 32, a fitting groove 310 into which a projecting piece 42 of the cover 4 described later is fitted is formed. Further, on the walls of the inner wall 32 on both sides in the width direction of the body 3 (upper and lower sides in FIG. 6A), as shown in FIGS. 6A and 6C, a first groove of the arm 5 described later is provided. A first claw 320 and a second claw 321 are formed to fit in 510 and the second groove 511, respectively.

  A power supply unit 6 is attached to one end of the body 3 in the longitudinal direction (left end in FIG. 6A, hereinafter referred to as “tip”). The main portion 30 is provided with a plurality of pairs (three pairs in the drawing) of ribs 300 as shown in FIG. The wiring W1 can be positioned in the body 3 by passing the wiring W1 that connects the power supply unit 6 and an external power supply (not shown) between the ribs 300 as a pair. Further, a pair of notches 311 for passing the wiring W1 is provided at the other end in the longitudinal direction of the body 3 (the right end in FIG. 6A, hereinafter referred to as “base end”). By passing the wiring W1 through these notches 311, the wiring W1 can be pulled out from the inside of the body 3 to the outside.

  A pair of shafts 33 is provided at the tip of the body 3. Each shaft 33 can be hooked with each hook 40 of the cover 4 to be described later. A connecting portion 34 for connecting the arm 5 is formed at the base end of the body 3. Insertion grooves 340 into which side plates 51 of the arm 5 to be described later are inserted are provided on both sides (upper and lower sides in FIG. 6A) along the width direction of the connecting portion 34, respectively.

  On the outer surface of the main portion 30 (the surface on the front side in FIG. 6B), as shown in FIG. 6B, a recessed portion 35 that is recessed along the thickness direction is formed. The base end of the recess 35 is open to the outside. For this reason, rain water collected in the recess 35 flows down from the base end to the outside. The recess 35 is provided with a long projection 36 along its longitudinal direction (the left-right direction in FIG. 6B). With this projection 36, rainwater accumulated in the recess 35 can be divided and flowed to both sides (upper and lower sides in FIG. 6B) sandwiching the projection 36.

  As shown in FIG. 6A, a pair of bosses 360 and 361 are provided on the base end side of the inner surface of the projection 36 (the front surface in FIG. 6A). Female threads (not shown) are formed on the inner peripheral surfaces of the bosses 360 and 361. The arm 5 can be fixed to the body 3 by superimposing a mounting hole 502 of the arm 5 described later on the boss 360 and tightening with the mounting screw S1 (see FIG. 2A). Further, the cover 4 and the arm 5 can be fixed to the body 3 by superimposing the mounting hole 503 of the arm 5 described later and the mounting hole 410 of the cover 4 described later on the boss 361 and tightening with the mounting screw S1 ( (See FIG. 2 (a)).

  As shown in FIGS. 7 (a) and 7 (b), the cover 4 is a semi-cylindrical resin molded product made of a translucent resin material such as PMMA resin, for example (see FIG. 7 (b)). The upper surface is opened. The cover 4 is attached to the body 3 to close the opening of the body 3.

  A pair of hooks 40 is provided at the tip of the cover 4. By hooking each hook 40 to each shaft 33 of the body 3, the cover 4 can be rotated about each shaft 33 as a fulcrum. That is, each hook 40 of the cover 4 and each shaft 33 of the body 3 constitute a hinge.

  On the peripheral edge of the opening of the cover 4, a projecting piece 42 that protrudes in the direction along the thickness direction (upward in FIG. 7C) is integrally formed over the entire periphery. Accordingly, when the cover 4 is used to close the opening of the body 3, the space surrounded by the body 3 and the cover 4 is sealed by fitting the projecting piece 42 into the fitting groove 310 of the body 3. (See FIG. 7C).

  A recess 41 that is recessed in a direction along the thickness direction (upward in FIG. 7B) is provided at the base end of the cover 4. As shown in FIGS. 7A and 7B, the recess 41 is provided with a mounting hole 410 penetrating in the thickness direction (vertical direction in FIG. 7B). As described above, the mounting hole 410 is used to fix the cover 4 to the body 3 and the arm 5 using the mounting screw S1.

  A rectangular notch 43 is provided at the base end of the cover 4 as shown in FIG. When the cover 4 is attached to the body 3 and the arm 5, the base end of the support portion 5 </ b> A of the arm 5 described later is positioned in the notch 43. As shown in FIG. 7 (d), packing 7 is attached to notch 43 in order to fill the gap between cover 4 and arm 5. The packing 7 can prevent dust, rainwater, and the like from entering the space surrounded by the body 3 and the cover 4.

  The arm 5 is made of a metal plate such as a steel plate. The arm 5 is attached to the support column A1 and supports the body 3. As shown in FIGS. 8A and 8B, the arm 5 is formed by integrally forming a rectangular main plate 50 and a pair of side plates 51. Each side plate 51 rises along the thickness direction (vertical direction in FIG. 8B) from both sides along the longitudinal direction of the main plate 50 (horizontal direction in FIG. 8B). Further, when the arm 5 is attached to the support column A1, as shown in FIG. 3, the arm 5 is curved so as to be inclined at a certain angle (for example, 60 degrees or more) with respect to the horizontal plane. Hereinafter, a portion of the arm 5 that supports the body 3 is referred to as a support portion 5A, and a portion of the arm 5 that is attached to the support column A1 is referred to as a support column attachment portion 5B.

  As shown in FIG. 8A, two pairs of attachment holes 500 penetrating in the thickness direction are provided on both sides along the longitudinal direction of the support portion 5A. These mounting holes 500 are used for fixing the light source 1 and the lens unit 2 to the arm 5 using the mounting screw S1 as described above.

  As shown in FIG. 8B, first grooves 510 are provided at the tips of the side plates 51, respectively. A second groove 511 is provided in the middle of each side plate 51 along the longitudinal direction. The second groove 511 is formed in a bowl shape in plan view so as to cut out one end edge (the upper end edge in FIG. 8B) along the short side direction of each side plate 51. As described above, the claws 320 and 321 of the inner wall 32 of the body 3 are fitted in the grooves 510 and 511, respectively. The arms 5 can be positioned on the body 3 by fitting the claws 320 and 321 into the grooves 510 and 511.

  In the support portion 5A, a rectangular notch 513 is provided on the base end side of each side plate 51, as shown in FIG. By passing the wiring W <b> 1 through these notches 513, it is possible to avoid the wiring W <b> 1 being sandwiched between the arm 5 and the body 3.

  In the support portion 5A, a circular recess 501 that is recessed in the thickness direction is provided on the base end side of the main plate 50 as shown in FIG. An attachment hole 502 that penetrates in the thickness direction is provided in the center of the recess 501. The mounting hole 502 is used to fix the arm 5 to the body 3 using the mounting screw S1 as described above. Further, in the vicinity of the recess 501 in the support portion 5A, as shown in FIG. 8A, an attachment hole 503 penetrating in the thickness direction is provided. As described above, the mounting hole 503 is used to fix the cover 4 to the body 3 and the arm 5 using the mounting screw S1.

  When the arm 5 is attached to the column A1, as shown in FIG. 3, first, the belt B2 is wound around the column A1 to fix the mounting bracket B1. Thereafter, three mounting holes (not shown) provided in the mounting bracket B1 and three mounting holes 504, 505, and 506 provided on the base end side of the column mounting portion 5B are overlapped, and mounting screws S1 are respectively attached. Tighten. Thereby, the arm 5 can be fixed to the column A1 via the mounting bracket B1 and the belt B2. In the column attachment portion 5B, each side plate 51 is provided with a rectangular slit 512 as shown in FIG. Each slit 512 is used for passing the belt B2 when the arm 5 is directly attached by winding the belt B2 around a power pole (not shown), for example.

  As shown in FIGS. 2A and 2B, the power supply unit 6 is configured by housing a lighting circuit 60 and a photosensor 61 in a case 62. The lighting circuit 60 supplies power to each LED 10 of the light source 1 to emit light (light on). The lighting circuit 60 includes, for example, a conventionally known AC / DC converter that converts AC power supplied from a commercial power source into DC power. Moreover, the lighting circuit 60 includes a receptacle 600 connected to an output terminal (not shown). Then, by connecting the plug 131 to the receptacle 600, the lighting circuit 60 and each LED 10 of the light source 1 are electrically connected.

  The case 62 is integrally formed with a tubular daylighting unit 620 for guiding natural light (sunlight) into the case 62. The optical sensor 61 detects natural light guided into the case 62 via the daylighting unit 620, and outputs a detection signal to the lighting circuit 60 when the amount of light is below a threshold value. The lighting circuit 60 supplies power to each LED 10 while the detection signal from the optical sensor 61 is output, and does not supply power to each LED 10 while the detection signal is not output. For this reason, in this embodiment, for example, when the sun goes down and the area becomes dark, each LED 10 is automatically turned on, and when the sun rises and the area becomes bright, each LED 10 is automatically turned off.

  In the present embodiment, the power supply unit 6 is attached to the body 3 by attaching the power supply unit 6 to the main portion 30 of the body 3, but the power supply unit 6 may be externally attached.

  Hereinafter, a procedure for assembling the present embodiment will be described. First, the body 3 is placed in the work space with its opening facing the sky. Then, the power supply unit 6 is attached to the body 3. Thereafter, the wiring W1 connected to the power supply unit 6 is sandwiched between the ribs 300 and pulled out through the notch 311.

  Next, each side plate 51 of the arm 5 is inserted into each insertion groove 340 of the connection portion 34 of the body 3. At this time, each second claw 321 of the inner wall 32 of the body 3 is inserted into the second groove 511 of each side plate 51 of the arm 5. Then, the arm 5 is slid toward the tip side. As a result, the claws 320 and 321 of the body 3 are fitted into the grooves 510 and 511 of the arm 5. In this state, the arm 5 is fixed to the body 3 by inserting and tightening the mounting screw S1 into the mounting hole 502 of the arm 5 and the boss 360 of the body 3.

  Next, the mounting holes 110 of the substrate 11 and the mounting holes 220 of the lens unit 2 are overlapped with the mounting holes 500 of the arm 5 and tightened with the mounting screws S1, whereby the light source 1 and the lens unit 2 are mounted on the arm 5. Fix it. Then, by connecting the plug 131 of the light source 1 to the receptacle 600 of the power supply unit 6, each LED 10 of the light source 1 and the lighting circuit 60 of the power supply unit 6 are electrically connected.

  Next, with the packing 7 attached to the notch 43 of the cover 4, the hooks 40 of the cover 4 are hooked on the shafts 33 of the body 3. And the opening of the body 3 is obstruct | occluded with the cover 4 by rotating the cover 4 about each axis | shaft 33 as a fulcrum. Finally, the cover 4 is fixed to the body 3 and the arm 5 by inserting and tightening the mounting screw S1 into the mounting hole 410 of the cover 4, the mounting hole 503 of the arm 5, and the boss 361 of the body 3.

  As described above, in this embodiment, the substrate 11 of the light source 1 is attached to the support portion 5 </ b> A (substrate attachment portion) of the metal arm 5. Thus, in this embodiment, by directly attaching the substrate 11 of the light source 1 to the metal arm 5, the heat generated by each LED 10 can be radiated to the outside air via the arm 5. Therefore, in this embodiment, it is not necessary to use a heat radiating attachment member as in the prior art, and heat generated by each LED 10 (light emitting element) can be radiated while reducing costs and downsizing the device.

  In the present embodiment, the support portion 5 </ b> A of the arm 5 also serves as a substrate attachment portion for attaching the substrate 11. Of course, a portion of the arm 5 different from the support portion 5A may be used as the substrate attachment portion.

  As shown in FIG. 10, the support portion 5 </ b> A (substrate mounting portion) of the arm 5 may be formed in a shape in which a part in contact with the substrate 11 protrudes toward the substrate 11 from other portions. In this configuration, the adhesion between the arm 5 and the substrate 11 can be enhanced, and the heat dissipation efficiency of each LED 10 can be enhanced. Whether or not to adopt the above-described configuration relating to the main plate 50 of the arm 5 is arbitrary.

  Here, in this embodiment, since the body 3 and the arm 5 are made of different materials, their thermal expansion coefficients are also different from each other. For this reason, there is a possibility that stress is applied to the substrate 11 attached to the arm 5 due to thermal expansion caused by the difference in thermal expansion coefficient between the body 3 and the arm 5. Therefore, in the present embodiment, as shown in FIG. 4A, each mounting hole 110 is formed by cutting out a part of the outer peripheral edge of the substrate 11. For this reason, compared with the case where each attachment hole 110 is formed without cutting out a part of the outer peripheral edge of the substrate 11, stress due to thermal expansion can be released, and stress on the substrate 11 and each LED 10 can be reduced. Can do.

  In the present embodiment, each mounting hole 220 of the lens unit 2 is also formed by cutting out a part of the outer peripheral edge of each mounting piece 22 in order to release stress due to thermal expansion (FIG. 6A). )reference). It should be noted that whether or not to adopt the above-described configuration regarding each mounting hole 110 of the substrate 11 and each mounting hole 220 of the lens unit 2 is arbitrary.

  Moreover, in this embodiment, as shown to Fig.8 (a), the arm 5 sets the dimension of the width direction (up-down direction in Fig.8 (a)) of the support part 5A (board | substrate attachment part) to the support | pillar attachment part 5B. It is larger than the dimension in the width direction. For this reason, the distance between the outer peripheral edge of the support portion 5 </ b> A of the arm 5 and each LED 10 of the light source 1 can be increased. Therefore, the creeping distance between the metal arm 5 and each LED 10 can be secured, and the resistance to lightning surge can be increased. The arm 5 is made of a steel plate and has a smaller heat capacity than aluminum, but the heat capacity can be increased by increasing the width dimension of the column mounting portion 5B of the arm 5 as described above. Whether or not to adopt the above-described configuration regarding the arm 5 is arbitrary.

  In the present embodiment, the substrate 11 is attached to the arm 5 by screwing, but means for attaching the substrate 11 to the arm 5 is not limited to this. For example, the substrate 11 may be attached to the arm 5 using an adhesive. In the present embodiment, the LED 10 is used as the light emitting element, but other light emitting elements such as an organic EL element may be used.

1 Light source 10 LED (light emitting element)
11 Substrate 3 Body (housing)
4 Cover (housing)
5 Arm 5A Supporting part (board mounting part)
5B Prop mounting part

Claims (4)

A light source formed by mounting a light emitting element on a substrate, a metal arm attached to a support column installed on the ground, and a housing supported by the arm and housing the light source and a part of the arm,
The said arm is provided with the support part which supports the said housing, the support | pillar attachment part attached to the said support | pillar, and the board | substrate attachment part which attaches the said board | substrate.   2. The lighting device according to claim 1, wherein the substrate mounting portion is formed in a shape in which a part in contact with the substrate protrudes toward the substrate rather than other portions. The board has a mounting hole for inserting a mounting screw for screwing to the board mounting portion,
The lighting device according to claim 1, wherein the mounting hole is formed by cutting out a part of an outer peripheral edge of the substrate. The support portion also serves as the substrate mounting portion,
4. The lighting device according to claim 1, wherein a dimension of the support portion in a width direction is larger than a dimension in a width direction of the support column attachment portion.

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