JP2020057478A - Light source unit and lighting fixture - Google Patents

Abstract

To provide a light source unit efficiently emitting light obliquely downward while suppressing the front-back direction length of a space occupied by a fitting member, and to provide a lighting fixture.SOLUTION: A light source unit 10 in a first aspect includes a mounting substrate 20 having an LED 21, a heat radiation member 5, and a fitting member 3 to which the mounting substrate 20 and the heat radiation member 5 are fitted. One longitudinal side of an axial line passing through the center of the fitting member 3 is made to be a forward F and another is made to be a backward direction B. One side of a direction orthogonal to a front-back direction is made to be an upward U and another side is made to be a downward D. A pedestal part 4 to which the mounting substrate 20 is fitted is provided on the front surface of the fitting member 3. A heat radiation member 5 is provided on the rear surface of the fitting member 3. When the direction of a normal line vector of a substrate fitting surface 40 on which the mounting substrate 20 of the pedestal part 4 is fitted is made to be a fitting surface direction 42, the fitting surface direction 42 is inclined toward the downward D with respect to the forward F.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a light source unit and a lighting fixture, and more particularly, to a light source unit including a mounting board, a heat radiating member and a mounting member, and a lighting fixture including the light source unit.

  As a conventional example, a lighting device described in Patent Document 1 is exemplified. This conventional example includes a light source unit and a fixture main body, and the light source unit includes a mounting board, a heat radiation member, and a mounting member. A mounting board is provided on the front side of the mounting member, and a heat radiating member is provided on the rear side of the mounting member.

  The mounting board is mounted on the front surface of the mounting member, and the LED mounted on the mounting board has the optical axis facing forward.

JP-A-2005-225816

  However, in the conventional example described in Patent Document 1, it is difficult to efficiently irradiate the light emitted from the LED obliquely downward when the front surface of the mounting member faces forward. In addition, in order to efficiently irradiate light obliquely downward, if the optical axis of the LED is directed obliquely downward, it is necessary to incline the mounting member so that the front surface of the mounting member faces obliquely downward. The length of the space occupied in the front-back direction becomes long.

  An object of the present disclosure is to provide a light source unit and a lighting device that can efficiently irradiate light obliquely downward while suppressing an increase in the length in the front-rear direction of a space occupied by a mounting member.

  According to an embodiment of the present disclosure, there is provided a light source unit including a mounting substrate having a solid-state light emitting element, a heat radiating member, and a mounting member to which the mounting substrate and the heat radiating member are mounted. One of the longitudinal directions of one axis passing through the center of the mounting member is defined as the front and the other is defined as the rear, and one of the directions orthogonal to the front-rear direction is defined as the upper side and the other is defined as the lower side. The light source unit has a pedestal on the front surface of the mounting member, to which the mounting board is mounted. The light source unit has the heat radiating member on a rear surface of the mounting member. When the direction of the normal vector of the board mounting surface of the pedestal portion to which the mounting board is mounted is the mounting surface direction, the mounting surface direction is inclined downward with respect to the front.

  One embodiment of a lighting fixture according to the present disclosure includes the light source unit and a fixture body to which the light source unit is attached.

  In the light source unit and the luminaire according to the present disclosure, light can be efficiently emitted obliquely downward while suppressing the length of the space occupied by the mounting member from increasing in the front-rear direction.

FIG. 1 is a perspective view of a lighting device according to an embodiment of the present disclosure as viewed obliquely from above and front. FIG. 2 is an exploded perspective view of the lighting device (excluding a part thereof) as viewed obliquely from above in the front. FIG. 3 is an exploded perspective view of a portion including the attachment plate (attachment member) and the LED module of the lighting device, viewed obliquely from the lower front. FIG. 4 is a side view of a state where a part including the mounting plate (mounting member) and the LED module is disassembled. FIG. 5 is an exploded perspective view of a portion including a mounting frame (mounting member) and a heat radiating member of the lighting device, viewed obliquely from below and below. FIG. 6A is a front view of a reflection block of the above lighting device. FIG. 6B is a rear view of the reflection block of the above lighting device. FIG. 7A is a side view of the reflection block according to the third embodiment. FIG. 7B is a side cross-sectional view of the above-described reflection block. FIG. 8 is a side cross-sectional view of a main part of the reflective block and the LED module of the above.

  The present disclosure relates to a light source unit and a lighting fixture, and more particularly, to a light source unit including a mounting board, a heat radiating member, and a mounting member, and a lighting fixture including the light source unit.

  Hereinafter, an embodiment of the light source unit 10 and the lighting fixture 1 according to the present disclosure will be described with reference to FIGS. FIG. 1 shows a perspective view of the lighting fixture 1, and FIG. 2 shows an exploded perspective view of the lighting fixture 1 excluding a part thereof.

  First, the light source unit 10 of the present embodiment will be described. As shown in FIG. 2, the light source unit 10 includes the LED module 2, the mounting member 3, the heat radiating member 5, the reflecting plate block 6, and the cover block 7.

  Here, the vertical direction, the horizontal direction, and the front-back direction of the light source unit 10 and the lighting fixture 1 are defined. As shown in FIG. 2, one of the longitudinal directions of one axis passing through the center (not particularly shown) of the mounting member 3 is defined as a front F and the other is defined as a rear B. Further, one of the directions orthogonal to the front-rear direction is defined as an upper U, and the other is defined as a lower D. Further, one of the directions orthogonal to the front-rear direction and the vertical direction is defined as left L, and the other is defined as right R. The up-down direction, the left-right direction, and the front-rear direction shown in FIG.

  As shown in FIG. 3, the LED module 2 includes an LED 21 (light emitting diode) as a solid light emitting element, and a mounting board 20. The LED 21 is a conventionally known package-type white LED. The mounting substrate 20 is configured by a substrate made of rectangular aluminum whose longitudinal direction is the left-right direction. The plurality of LEDs 21 (six in the illustrated example) are mounted on the front surface of the mounting board 20 in the left-right direction. The direction 23 of the optical axis of the LED 21 matches the direction of the normal vector on the front surface of the mounting board 20. The LED 21 has the highest luminance of the light emitted in the direction 23 of the optical axis, and the luminance of the light decreases as the direction of the emitted light is inclined from the direction 23 of the optical axis.

  Further, two receptacle connectors 22 are mounted on the front surface of the mounting board 20. These two receptacle connectors 22 are connected to the electrodes (cathode and anode) of each LED 21 via a wiring conductor (not shown) formed on the front surface of the mounting board 20. The mounting board 20 is mounted on the mounting member 3.

  As shown in FIG. 2, the mounting member 3 has a mounting frame 31 and a mounting plate 30 fixed inside the mounting frame 31.

  As shown in FIG. 5, the mounting frame 31 is formed of a metal such as an aluminum die-cast product, but may be formed of a synthetic resin material having no light transmitting property such as PBT (Polybutylene terephthalate) resin. The mounting frame 31 has a rectangular shape in a front view, and has an opening 32 in which the mounting plate 30 is disposed. The mounting frame 31 has a horizontal bridge portion 33 that is bridged in the left-right direction at the center in the vertical direction, an upper opening 321 is located above the horizontal bridge portion 33, and a lower opening 322 is below the horizontal bridge portion 33. Is located. Further, the mounting frame 31 has a vertical bridging portion 34 that extends vertically in the center of the upper opening 321 in the left-right direction, and an upper left opening 3211 is located on the left side of the vertical bridging portion 34. The upper right opening 3212 is located on the right side of. Similarly, the mounting frame 31 has a vertical bridging portion 34 that extends vertically in the center of the lower opening 322 in the left-right direction, and a lower left opening 3221 is located on the left side of the vertical bridging portion 34. A lower right opening 3222 is located to the right of 34. The upper left opening 3211, the upper right opening 3212, the lower left opening 3221, and the lower right opening 3222 have the same size, and the mounting plate 30 to be arranged is the same and is not particularly distinguished. FIG. 2 shows a state in which only the mounting plate 30 arranged in the upper left opening 3211 has been removed.

  As shown in FIG. 3, the mounting plate 30 is formed of a metal such as an aluminum die-cast product, but may be formed of a non-light-transmitting synthetic resin material such as a PBT resin. The mounting plate 30 has a rectangular shape in a front view. The front surface of the mounting plate 30 faces forward F. In other words, the direction 300 of the normal vector on the front surface of the mounting plate 30 is the front F direction. The mounting plate 30 is formed with a plurality of (ten in the illustrated example) through holes 301 formed of so-called fool holes penetrating back and forth. The mounting plate 30 is disposed in the upper left opening 3211 of the mounting frame 31, and a plurality of fasteners 371 (ten in the illustrated example) made of a plurality of screws are respectively passed through the through holes 301, and female screws formed in the mounting frame 31. Screwed into a fixing hole (not shown) having Thereby, the mounting plate 30 is mounted on the mounting frame 31 in a state where the mounting plate 30 is located at the upper left opening 3211 of the mounting frame 31. The mounting plate 30 located at the upper right opening 3212, the lower left opening 3221, and the lower right opening 3222 of the mounting frame 31 is similarly mounted.

  The mounting plate 30 (the mounting member 3) has a pedestal portion 4 on the front surface to which the mounting board 20 is mounted. The pedestal part 4 is formed integrally with the mounting plate 30. The mounting frame 31, the mounting plate 30, and the pedestal 4 constitute the mounting member 3. The front surface of the mounting plate 30 (where the pedestal portion 4 is not located) constitutes the front surface of the mounting member 3.

  The light source unit 10 includes a plurality of mounting boards 20 and a plurality of pedestals 4 respectively corresponding to the plurality of mounting boards 20. More specifically, the mounting plate 30 (the mounting member 3) has a plurality of (five in the illustrated example) pedestal portions 4. The plurality of pedestals 4 are arranged vertically on the front surface of the mounting plate 30.

  The front surface of the pedestal portion 4 serves as a substrate mounting surface 40 to which the rear surface of the mounting substrate 20 is mounted. The shape of the board mounting surface 40 is formed substantially the same as the shape of the mounting board 20. The size of the board mounting surface 40 is formed slightly larger than the size of the mounting board 20. In the present embodiment, the mounting board 20 is attached to the base 4 together with the pressing member 35 and the heat conductive sheet 36.

  The pressing member 35 is a plate-shaped member formed of a non-light-transmitting synthetic resin material such as a PBT resin. The shape of the pressing member 35 is formed substantially the same as the shape of the mounting board 20. The size of the holding member 35 is slightly larger than the size of the mounting board 20 and is formed to be substantially the same as the size of the board mounting surface 40. The holding member 35 is formed with a transmission window 351 for transmitting light emitted from the LED 21 at a position corresponding to each LED 21 on the mounting board 20. A plurality (five in the illustrated example) of fixing members 372 formed of a plurality of (five in the illustrated example) screws are formed in the holding member 35 at a position different from that of the transmission window 351 and formed of a plurality of (five in the illustrated example) screws. A hole 352 is formed.

  The heat conductive sheet 36 is a plate-shaped member formed of a material having excellent electrical insulation and heat conductivity (for example, silicone resin). The shape of the heat conductive sheet 36 is formed substantially the same as the shape of the mounting board 20. The size of the heat conductive sheet 36 is slightly larger than the size of the mounting board 20, and is formed to be substantially the same as the size of the board mounting surface 40.

  Notches 201 and 361 are formed in the mounting board 20 and the heat conductive sheet 36 at positions corresponding to the through holes 352 of the holding member 35 to avoid the fixing members 372. Further, fixing holes 41 having female screws into which fixing members 372 are screwed are formed in the pedestal portion 4 at positions corresponding to the through holes 352 of the pressing member 35, respectively.

  The mounting board 20, the holding member 35, and the heat conductive sheet 36 are stacked in the order of the heat conductive sheet 36, the mounting board 20, and the holding member 35 from the side near the board mounting surface 40 of the pedestal 4. The fixing tool 372 passes through the through hole 352 of the pressing member 35, the notch 201 of the mounting board 20, and the notch 361 of the heat conductive sheet 36 from the front F side, and is screwed into the fixing hole 41 of the pedestal part 4, and 20, the holding member 35 and the heat conductive sheet 36 are attached to the pedestal portion 4. Thereby, the mounting board 20, the heat conductive sheet 36, and the pedestal portion 4 are thermally connected.

  As shown in FIG. 4, when the direction of the normal vector of the substrate mounting surface 40 is the mounting surface direction 42, the mounting surface direction 42 is inclined downward D with respect to the front F at an angle θ <b> 1. The angle θ1 is at least larger than 0 degrees and smaller than 90 degrees. Preferably, the angle θ1 is not less than 30 degrees and not more than 60 degrees, and is 45 degrees in the illustrated example.

  The angle θ2 at which the direction 23 of the optical axis of the LED 21 of the mounting board 20 mounted on the board mounting surface 40 of the pedestal portion 4 is inclined downward D with respect to the front F is as follows. Is the same as the angle .theta.1. Therefore, the angle θ2 is at least larger than 0 degrees and smaller than 90 degrees, like the angle θ1. Preferably, angle θ2 is not less than 30 degrees and not more than 60 degrees, and is 45 degrees in the illustrated example.

  In the present embodiment, the angles θ1 of the plurality of pedestals 4 that are inclined with respect to the front F in the mounting surface direction 42 are all the same, but the angles θ1 may be different depending on the pedestals 4. Further, the angles θ2 at which the directions 23 of the optical axes of the LEDs 21 are inclined downward D with respect to the front F are all the same, but the angles θ2 may be different depending on the LEDs 21.

  Accordingly, it is possible to efficiently irradiate light obliquely downward with the front surface of the mounting member 3 facing the front F and the space occupied by the mounting member 3 in the front-rear direction being short.

  Further, since the angle θ1 and the angle θ2 are not less than 30 degrees and not more than 60 degrees, it is possible to efficiently irradiate light in a direction inclined at an angle of not less than 30 degrees and not more than 60 degrees below the front F.

  As shown in FIG. 5, the heat radiation member 5 is attached to the rear surface of the attachment member 3. The heat radiating member 5 has a mounting board 51, a heat radiating plate 53 and a pipe 55. The mounting board 51 is made of aluminum and has a rectangular shape in a front view. A plurality of heat radiating plates 53 are mounted on the mounting board 51. The heat sink 53 is made of aluminum and has a rectangular shape in a side view. The heat sink 53 is attached to the mounting board 51 by welding. Further, a pipe 55 for passing cooling water is passed through the mounting board 51 and the heat sink 53. The pipe 55 is arranged so as to fit in the groove 52 formed in the mounting board 51 and pass through a through hole 54 formed in the heat sink 53.

  The heat radiating member 5 is held down by the holding frame 11 and attached to the attachment member 3. The holding frame 11 is made of a synthetic resin and has a rectangular shape in a front view. The holding frame 11 is held by the holding frame fixing member 12 and attached to the mounting member 3. The holding frame fixing member 12 is made of a steel plate, but may be made of another metal, a synthetic resin, or the like. The holding frame fixing member 12 has a through hole 121. A fixing hole 311 having a female screw is formed on the rear surface of the mounting frame 31.

  The mounting substrate 51, the holding frame 11, and the holding frame fixing member 12 are stacked in this order from the front F to the rear B. A fixing member 131 made of a screw is passed through the through hole 121 of the holding frame fixing member 12 from the rear B side, and is screwed into the fixing hole 311 of the mounting frame 31, and the heat radiating member 5 is mounted on the mounting member 3. Thereby, the heat radiation member 5 and the mounting member 3 are thermally connected.

  The reflection plate block 6 is made of a synthetic resin and has a frame portion 60 and a reflection plate 61 as shown in FIGS. As shown in FIG. 8, the upper reflector 611 of the reflector 61 is disposed in a region on the U side above the front F with the LED 21 as a starting point, and covers this region. The upper reflection plate 611 has an upper reflection surface 62 formed of a concave surface facing downward D when viewed from the left and right directions. The upper reflection surface 62 is a mirror surface. By disposing the upper reflection plate 611 having such an upper reflection surface 62, the light emitted from the LED 21 is suppressed from going to the upper U side from the front F.

  In the present embodiment, the direction from the LED 21 as a starting point to the front F side end of the upper reflection surface 62 is inclined downward D with respect to the front F at an angle θ3. For this reason, the light emitted from the LED 21 is suppressed from traveling downward U to the front U from the angle θ3 with respect to the front F. The angle θ3 is equal to or greater than 0 degrees and equal to or less than 45 degrees. Preferably, the angle θ3 is 10 degrees.

  The direction along the upper reflection surface 62 at the front F side end of the upper reflection surface 62 is inclined downward D at an angle θ5 with respect to the front F. The angle θ5 is not less than 30 degrees and not more than 40 degrees, and is preferably 34.2 degrees.

  As shown in FIG. 8, the lower reflector 612 of the reflector 61 is disposed in a region below the front F with respect to the front F from the LED 21 and covers this region. The lower reflection plate 612 has, for each of the plurality of LEDs 21, a lower reflection surface 63 that is disposed in a region below the front F and on the side D below the LED 21 as a starting point. The lower reflection surface 63 is a mirror surface. As shown in FIG. 6A, the lower reflection surface 63 is a concave surface facing upward U when viewed from the front-back direction for each LED 21. In the present embodiment, the direction from the LED 21 as a starting point to the end on the front F side of the lower reflection surface 63 is inclined downward D with respect to the front F at an angle θ4 (see FIG. 8). The angle θ4 is larger than the angle θ3. The angle θ4 is not less than 30 degrees and not more than 90 degrees. Preferably, the angle θ4 is 34 degrees.

  By such a lower reflection surface 63, the light emitted from the LED 21 is suppressed from going forward D downward D from the direction of the angle θ4 with respect to the front F. Thereby, at least the light directly emitted from the LED 21 is emitted at an angle between the angle θ4 and the angle θ3 inclined downward D with respect to the front F (for example, at an angle of 10 degrees or more and 34 degrees or less). .

  In addition, light emitted from the LED 21 toward the front U side downward D from the direction of the angle θ3 with respect to the front F is reflected by the upper reflection surface 62 and heads downward D, so that the light is not wasted without loss. Is unlikely to occur.

  Further, the reflection plate 61 has a partition wall 64 between the adjacent LEDs 21. The partition wall 64 rises upward from the lower reflection plate 612, and is connected to the lower reflection surface 63. The side surface 641 in the left-right direction of the partition wall 64 has a concave surface smoothly connected to the concave surface serving as the lower reflection surface 63. That is, the lower reflective surface 63 is formed of a concave surface facing upward U when viewed from the front-rear direction, the side surface 641 is smoothly connected to the concave surface of the lower reflective surface 63 (without a sharp portion), and viewed from above U and the front-rear direction. It consists of a concave surface facing inward in the left-right direction.

  Since the reflection plate 61 has the partition wall 64, light emitted from the LED 21 and directed in a direction inclined outward in the left-right direction with respect to the front F is directed to the partition wall 64 in a direction closer to the front F in the left-right direction. So that it is reflected inward. Thereby, more light emitted from the LED 21 is emitted in a direction closer to the direction 23 of the optical axis.

  Further, since the partition wall 64 is connected to the lower reflection surface 63, the light emitted from the LED 21 does not leak from between the partition wall 64 and the lower reflection surface 63, and the efficiency of light irradiation is reduced. Can be suppressed.

  Further, since the side surface 641 has a concave surface smoothly connected to the concave surface serving as the lower reflective surface 63, the light reflected on the side surface 641 is smoothly connected to the light reflected on the lower reflective surface 63, and the change of the light distribution is reduced. Become smooth.

  Further, since the upper reflection surface 62 is formed as a concave surface facing downward D when viewed from the left and right directions, the light emitted from the LED 21 and reflected by the upper reflection surface 62 is largely prevented from traveling downward D, and Irradiation is facilitated at an angle between the angles θ4 and θ3 inclined downward D.

  Further, light emitted from the LED 21 downward D toward the front F toward the lower D side from the direction of the angle θ4 is reflected by the lower reflection surface 63 and travels to the upper U side. Is unlikely to occur. In addition, since the lower reflecting surface 63 is a concave surface facing upward U when viewed from the front-rear direction for each LED 21, light emitted from the LED 21 and traveling in a direction inclined leftward and rightward with respect to the front F is reflected by the lower reflecting surface. At 63, the light is reflected so as to approach the front F in the left-right direction.

  As shown in FIG. 6A, the frame unit 60 unitizes the upper reflector 611 and the lower reflector 612 arranged for each LED module 2 collectively. The frame portion 60 has a cutout 601 through which a fixing tool 132 (see FIG. 2) made of a screw passes.

  The reflection plate block 6 is attached to the attachment frame 31 (the attachment member 3) via the attachment plate 14 and the bracket 15, as shown in FIG. The mounting plate 14 is made of a synthetic resin, and has a through hole 141 through which the fixing tool 132 passes. The bracket 15 connects the front piece 151 having a through hole through which the fixing tool 132 passes, the rear piece 153 having a through hole through which the fixing tool 133 made of screw passes, and the front piece 151 and the rear piece 153. And a middle piece 152.

  The fixing member 133 is passed through the through hole of the rear piece 153 from the front F side, is screwed into a fixing hole formed on the front surface of the mounting frame 31, and the bracket 15 is mounted on the mounting member 3. The frame portion 60 and the mounting plate 14 are stacked in this order from the front F to the rear B. The fixing member 132 is passed through the notch 601 of the frame portion 60 and the through hole 141 of the mounting plate 14 from the front F side, is screwed into the fixing hole of the mounting frame 31, and the reflector plate block 6 is mounted on the mounting member 3.

  As shown in FIG. 2, the cover block 7 is attached to the front surface of the attachment member 3. The cover block 7 has a cover 71, a packing 73, and a holding frame 75. The cover 71 is formed of a translucent synthetic resin and has a rectangular shape in a front view. The flange of the cover 71 is formed with a notch 72 through which a fastener 77 made of a screw passes. The packing 73 has a frame shape and a rectangular shape in a front view similar to the flange of the cover 71. The packing 73 has a cutout 74 through which the fastener 77 is passed. The holding frame 75 has a frame shape, and has a rectangular shape in a front view similar to the flange of the cover 71 and the packing 73. The holding frame 75 is formed with a through hole 76 through which the fixing tool 77 passes. A fixing hole 312 having a female screw is formed on the front surface of the mounting frame 31.

  The holding frame 75, the packing 73, and the flange of the cover 71 are stacked in this order from the front F to the rear B. The fixing member 77 is passed through the through hole 76 of the holding frame 75, the notch 74 of the packing 73, and the notch 72 of the cover 71 from the front F side, and is screwed into the fixing hole 312 of the mounting frame 31 to mount the cover block 7. It is attached to the member 3.

  As shown in FIG. 1, the lighting fixture 1 includes a light source unit 10 (see FIG. 2) and a fixture main body 16 to which the light source unit 10 is attached. The appliance body 16 has a mesh portion 18 for suppressing contact with the wiring box 17 and the heat radiating member 5. Furthermore, the lighting fixture 1 has an arm 19 attached to a wall surface or the like to which the lighting fixture 1 is attached. The direction of the mounting member 3 with respect to the wall surface or the like can be changed by the arm 19.

  Next, a modification of the above embodiment will be described.

  In the above embodiment, the light source unit 10 includes the reflection plate block 6 and the cover block 7, but may not include these.

  The up-down direction, the left-right direction, and the front-back direction defined in the above embodiment need not coincide with the up-down direction, the left-right direction, and the front-back direction in the actual use state of the lighting fixture 1, and are directions defined for convenience for description. .

  In the above-described embodiment, the mounting frame 31, the mounting plate 30, and the pedestal 4 constitute the mounting member 3. However, the mounting member 3 may have a configuration other than these, or may have a configuration such as the mounting frame 31. It is not necessary. The pedestal portion 4 may not be formed integrally with the mounting plate 30, but may be formed separately and then integrally mounted on the mounting plate 30.

  In the above-described embodiment, the light source unit 10 includes the plurality of mounting substrates 20 and the pedestal portions 4, but may include only one mounting substrate 20 and one pedestal portion 4.

  In the above embodiment, the transmission window 351 is formed so as to correspond to each LED 21 of the mounting board 20 of the holding member 35 in a one-to-one correspondence. However, one transmission window 351 is formed corresponding to the plurality of LEDs 21. You may.

  In the above embodiment, the angle θ1 at which the mounting surface direction 42 is inclined with respect to the front F and the angle θ2 at which the direction 23 of the optical axis is inclined downward D with respect to the front F are 30 degrees or more and 60 degrees or less (particularly 45 degrees). However, it does not have to be in this range. That is, the angle θ1 may be an angle larger than 0 degree and smaller than 30 degrees, or an angle larger than 60 degrees and smaller than 90 degrees.

  In the above embodiment, the reflector plate block 6 is made of a synthetic resin, but may be made of a metal such as an aluminum die-cast product.

  As is clear from the above-described embodiment and the modifications thereof, the light source unit 10 of the first aspect has the mounting substrate 20 having the LED 21, the heat radiation member 5, and the mounting substrate 20 and the heat radiation member 5 attached thereto. And a mounting member 3. One of the longitudinal directions of one axis passing through the center of the mounting member 3 is defined as a front F, the other is defined as a rear B, and one in a direction orthogonal to the front-rear direction is defined as an upper U and the other is defined as a lower D. On the front surface of the mounting member 3, there is a pedestal portion 4 to which the mounting board 20 is mounted. The heat radiating member 5 is provided on the rear surface of the mounting member 3. When the direction of the normal vector of the board mounting surface 40 to which the mounting board 20 of the pedestal portion 4 is mounted is the mounting surface direction 42, the mounting surface direction 42 is inclined downward D with respect to the front F.

  According to the first aspect, it is possible to efficiently irradiate light obliquely downward with the front surface of the mounting member 3 facing forward F and the length of the space occupied by the mounting member 3 in the front-rear direction is short. .

  The second aspect is realized by a combination with the first aspect. In the second mode, the light source unit 10 further includes a reflection plate 61. The reflection plate 61 is arranged in a region on the U side above the front F with the LED 21 as a starting point.

  According to the second aspect, the reflection plate 61 (upper reflection plate 611) suppresses the light emitted from the LED 21 from traveling toward the upper U side from the front F.

  The third aspect is realized by a combination with the second aspect. In the third embodiment, the reflection plate 61 has a partition wall 64 between the adjacent LEDs 21.

  According to the third aspect, light emitted from the LED 21 and directed in a direction inclined outward in the left-right direction with respect to the front F is directed inward at the partition wall 64 so as to face a direction closer to the front F in the left-right direction. Is reflected.

  The fourth aspect is realized by a combination with the third aspect. In the fourth mode, the partition wall 64 is connected to the lower reflection surface 63.

  According to the fourth aspect, the light emitted from the LED 21 does not leak from between the partition wall 64 and the lower reflection surface 63.

  The fifth mode is realized by a combination with the fourth mode. In the fifth aspect, the side surface 641 in the left-right direction of the partition wall 64 has a concave surface that smoothly connects to the concave surface serving as the lower reflective surface 63.

  According to the fifth aspect, the light reflected on the side surface 641 is smoothly connected to the light reflected on the lower reflection surface 63.

  The sixth aspect is realized by a combination with any one of the first to fifth aspects. In the sixth aspect, the angle at which the mounting surface direction 42 is inclined with respect to the front F is 30 degrees or more and 60 degrees or less.

  According to the sixth aspect, it is possible to efficiently irradiate light in a direction inclining downward D at an angle of 30 degrees or more and 60 degrees or less with respect to the front F.

  The seventh aspect is realized by a combination with any one of the first to sixth aspects. In the seventh aspect, the light source unit 10 includes a plurality of mounting boards 20 and a plurality of pedestals 4 respectively corresponding to the plurality of mounting boards 20. The plurality of pedestals 4 are arranged on the front surface of the mounting member 3 so as to be arranged vertically.

  According to the seventh aspect, even when a plurality of mounting boards 20 are provided, light can be efficiently emitted obliquely downward while the length of the space occupied by the mounting member 3 in the front-rear direction is short.

  The eighth mode is realized by a combination with the seventh mode. In the eighth aspect, the inclination angles of the plurality of pedestal portions 4 with respect to the front F in the mounting surface direction 42 are all the same.

  According to the eighth aspect, it is possible to irradiate light strongly in a predetermined direction.

  The ninth aspect is realized by a combination with any one of the first to eighth aspects. In the ninth aspect, the lighting fixture 1 includes a light source unit 10 and a fixture main body 16 to which the light source unit 10 is attached.

  According to the ninth aspect, with the front surface of the mounting member 3 of the lighting fixture 1 facing forward F, the light is efficiently obliquely downwardly directed while the length of the space occupied by the mounting member 3 in the front-rear direction is short. Can be irradiated.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Light source unit 16 Fixture main body 20 Mounting board 21 LED
REFERENCE SIGNS LIST 3 mounting member 4 pedestal part 40 board mounting surface 5 heat radiation member 61 reflector 611 upper reflector B rear D lower F front U upper

Claims (9)

A mounting substrate having a solid state light emitting element,
A heat dissipating member,
A mounting member to which the mounting board and the heat radiating member are mounted,
One of the longitudinal directions of one axis passing through the center of the mounting member is set to the front and the other is set to the rear, one of the directions orthogonal to the front-rear direction is set to be upper and the other is set to be lower,
On the front surface of the mounting member, has a pedestal portion to which the mounting board is mounted,
Having the heat dissipating member on the rear surface of the mounting member,
A light source unit, wherein the direction of the mounting surface is inclined downward with respect to the front when the direction of the normal vector of the substrate mounting surface on which the mounting substrate of the pedestal portion is mounted is the mounting surface direction. Further comprising a reflector,
The light source unit according to claim 1, wherein the reflection plate is disposed in a region above the front side with the solid state light emitting element as a starting point. The light source unit according to claim 2, wherein the reflector has a partition wall between the adjacent solid-state light-emitting elements. The light source unit according to claim 3, wherein the partition wall is connected to the lower reflection surface. The light source unit according to claim 4, wherein a side surface in the left-right direction of the partition wall has a concave surface smoothly connected to the concave surface serving as the lower reflection surface. The light source unit according to any one of claims 1 to 5, wherein an angle at which the orientation of the mounting surface is inclined with respect to the front is 30 degrees or more and 60 degrees or less. A plurality of the mounting boards, and a plurality of the pedestal portions respectively corresponding to the plurality of mounting boards,
The light source unit according to any one of claims 1 to 6, wherein the plurality of pedestals are arranged vertically along the front surface of the mounting member. The light source unit according to claim 7, wherein all of the plurality of pedestals have the same angle of inclination with respect to the front in the mounting surface direction. A lighting fixture comprising: the light source unit according to claim 1; and a fixture main body to which the light source unit is attached.

Images