JP6687716B2 - Lighting equipment - Google Patents

Description

  Embodiments of the present invention relate to a lighting device.

  2. Description of the Related Art Illumination devices having a semiconductor light emitting element such as an LED (Light Emitting Diode) as a light source have been used. Such an illuminating device includes, for example, a reflector that adjusts the distribution of light emitted from a light source, and a radiation fin for radiating heat generated by the light source to the outside is provided upright on the outer wall of the reflector. There is. However, in such a lighting fixture, the heat dissipation effect of the heat dissipation fins is not always high.

German Patent Application Publication No. 202008016231 JP, 2007-134316, A

  The problem to be solved by the present invention is to provide a lighting device capable of improving the heat dissipation effect.

Lighting device according to the embodiment includes a substrate light-emitting elements are mounted; is supported by the supporting member, whereas the substrate on the side, a plurality of lighting units and having a plurality of radiating fins on the other side; supporting the lighting unit A fixed frame that is attached to a supporting member that is held and that has a set of erected portions that extends in the height direction of the radiation fins ; and an attachment member that is disposed between the set of erected portions of the fixed frame. And a mounting member to which the tilting arm is mounted .

FIG. 1 is a perspective view showing an example of the external appearance of the lighting device according to the first embodiment. FIG. 2 is a perspective view showing an external appearance example of the lighting device according to the first embodiment. FIG. 3 is an exploded perspective view showing the lighting unit according to the first embodiment. FIG. 4 is an exploded perspective view showing the lighting unit according to the first embodiment. FIG. 5 is an exploded perspective view showing the lighting unit according to the first embodiment. FIG. 6 is a perspective view showing an exploded example of the lighting device according to the first embodiment. FIG. 7 is a top view showing the lighting device according to the first embodiment. FIG. 8 is a diagram showing a cross section taken along line I-I shown in FIG. 1. FIG. 9 is a diagram schematically showing an enlarged cross section of the optical lens according to the first embodiment. FIG. 10 is a diagram illustrating an appearance example of an enlarged cross section of the optical lens according to the first embodiment. FIG. 11: is a figure which shows typically the expanded cross section of the radiation fin which concerns on 2nd Embodiment. FIG. 12: is a figure which shows typically the expanded cross section of the radiation fin which concerns on 2nd Embodiment. FIG. 13 is an explanatory diagram for explaining the arrangement pattern of the optical lens according to the second embodiment. FIG. 14 is an explanatory diagram illustrating a rod-shaped member according to the second embodiment. FIG. 15 is an explanatory diagram illustrating a rod-shaped member according to the second embodiment. FIG. 16 is an explanatory diagram illustrating an arrangement example of the radiation fins according to the second embodiment. FIG. 17 is an explanatory diagram illustrating the orientation of the lighting unit according to the second embodiment. FIG. 18 is an explanatory diagram illustrating members attached to the lighting device according to the second embodiment. FIG. 19 is an explanatory diagram illustrating members attached to the lighting device according to the second embodiment. FIG. 20 is an explanatory diagram illustrating members attached to the lighting device according to the second embodiment.

  In the lighting units 100, 200, 300, and 400 according to the embodiments described below, the substrate 120 having the light emitting element 122 mounted on one surface and the other surface (contact surface 120b) of the substrate 120 are installed. A support member (fin base 111) having one surface 111a and supporting the substrate 120 installed on the first surface 111a and a second surface 111b on the back surface of the first surface 111a are spaced apart from each other and are substantially parallel to each other. A plurality of radiating fins 112 each having a planar shape that are erected are provided.

  In addition, in the lighting units 100, 200, 300, and 400 according to the embodiment, the plurality of heat radiation fins 112 have the protruding portions 112P protruding outward from the edge of the second surface 111b.

  In addition, the lighting units 100, 200, 300, and 400 according to the embodiment further include metal rod-shaped members 115 a to 115 d that penetrate the respective surfaces of the plurality of heat radiation fins 112.

  In addition, in the lighting units 100, 200, 300, and 400 according to the embodiment, the plurality of heat radiation fins 112 are erected on the back side of the second surface 111b where the light emitting element 122 is mounted.

  In addition, the lighting device 1 according to the embodiment includes the lighting units 100, 200, 300, and 400, and the plurality of lighting units 100, 200, 300, and 400 are provided in a state in which the respective heat radiation fins of the lighting units 100, 200, 300, and 400 are not in contact with each other. Fixed frames 10 and 20 for fixing 100, 200, 300 and 400 are further provided.

  Hereinafter, a lighting unit and a lighting device according to embodiments will be described with reference to the drawings. In the embodiments, the same parts are designated by the same reference numerals, and duplicate description is omitted.

(First embodiment)
[Exterior example of lighting device]
FIG. 1 and FIG. 2 are perspective views showing an appearance example of a lighting device 1 according to the first embodiment. FIG. 1 shows an example of the lighting device 1 viewed obliquely from above, and FIG. 2 shows an example of the lighting device 1 viewed from obliquely below.

  The lighting device 1 shown in FIGS. 1 and 2 is installed in a high ceiling in a building such as a gymnasium, and emits a light emitting element such as an LED mounted therein to cause the lighting device 1 shown in FIGS. Illuminates a wide range of space located downward.

  In the example shown in FIGS. 1 and 2, the lighting device 1 includes four lighting units 100, 200, 300 and 400. Specifically, the lighting unit 100 and the lighting unit 200 are fixed to the fixed frame 10, and the lighting unit 300 and the lighting unit 400 are fixed to the fixed frame 20. Then, the fixed frame 10 and the fixed frame 20 are fixed to each other, so that the lighting device 1 includes four lighting units 100, 200, 300, and 400.

  Hereinafter, each member shown in FIGS. 1 and 2 will be described more specifically. Since the lighting units 100, 200, 300 and 400 have the same structure, the lighting unit 100 will be mainly described below. Since the fixed frames 10 and 20 have the same structure, the fixed frame 10 will be mainly described below.

  The lighting unit 100 includes a housing case 190 as shown in FIG. The housing case 190 is formed of, for example, a metal having high thermal conductivity, and accommodates a transparent lower surface cover 180, a substrate on which a light emitting element such as an LED described later is mounted, and the like.

  Further, in the lighting unit 100, as shown in FIGS. 1 and 2, a plurality of heat radiation fins 112 are provided upright above the housing case 190. The radiating fins 112 radiate the heat generated from the light emitting element housed inside the housing case 190 to the outside. In each of the drawings described below, a part of the heat radiation fins may be denoted by reference numeral 112, but a planar member standing above the housing case 190 corresponds to the heat radiation fins 112.

  The fixed frame 10 fixes the lighting units 100 and 200, and the fixed frame 20 fixes the lighting units 300 and 400. These fixed frames 10 and 20 are made of metal, for example. Further, the fixed frame 10 and the fixed frame 20 are fixed to each other via the spacers 31 to 33. The fixing mechanism in the fixed frames 10 and 20 will be described later.

  Further, as shown in FIG. 1, the fixed frame 10 is provided with the mounting member 14, the terminal block 41, and the power supply devices 42a and 42b. The attachment member 14 is made of metal, for example, and is attached to the ceiling or the like. The terminal block 41 relays power supply from a commercial AC power supply (not shown) to the power supply devices 42a and 42b. The power supply devices 42a and 42b supply the power relayed from the terminal block 41 to the boards mounted inside the lighting units 100 and 200 via a power supply line (not shown). Similarly, the fixed frame 20 is provided with the mounting member 24, the terminal block 51, and the power supply devices 52a and 52b. The lighting device 1 is installed on the ceiling by attaching the mounting members 14 and 24 to the ceiling, for example.

[Disassembly example of lighting unit]
Next, an example of disassembling the lighting unit 100 according to the first embodiment will be described. 3 to 5 are perspective views showing an exploded example of the lighting unit 100 according to the first embodiment. Note that FIG. 3 shows an example of the lighting unit 100 viewed obliquely from above, FIG. 4 shows an example of the lighting unit 100 viewed obliquely from below, and FIG. 5 shows an enlargement of a part shown in FIG. The figure is shown.

  As shown in FIGS. 3 and 4, the lighting unit 100 according to the embodiment includes a fin unit 110, a substrate 120, washers 130a to 130d, a reflector 140, spacers 150a to 150d, an optical lens 160, and The fixing screws 170a to 170d, the lower surface cover 180, and the housing case 190 are provided.

  The fin unit 110 is made of metal having high heat conductivity, and has a fin base portion 111 and a heat radiation fin 112. The fin base portion 111 is a support member on which the substrate 120 is installed, and as shown in FIG. 5, the first surface 111 a that is in surface contact with the substrate 120 and the radiation fin 112 that is the back surface of the first surface 111 a. And a second surface 111b on which is erected.

  Further, the lower end of the fin base portion 111 is opened in a substantially rectangular shape with the first surface 111 a as a bottom surface so that the substrate 120, the reflector 140, the optical lens 160, and the lower surface cover 180 can be stored. As shown in FIG. 5, the opening portion of the fin base portion 111 has a first step portion 111c and a second step portion 111d so that the opening surface is gradually increased in the direction from the first surface 111a toward the lower end. Thereby forming two steps.

  Further, as shown in FIGS. 3 and 4, screw holes 113a and 113b into which fixing screws (not shown) are screwed when the housing case 190 and the like are fixed to the fin base 111 are formed on the side surface of the outer wall of the fin base 111. It is formed. Although not shown, the fin base portion 111 is also formed with the same screw holes as the screw holes 113a and 113b on the side surface opposite to the side surface on which the screw holes 113a and 113b are formed. Further, as shown in FIG. 4, screw holes 114a to 114d into which the fixing screws 170a to 170d are respectively screwed are formed in the first surface 111a of the fin base portion 111.

  The radiating fins 112 are erected on the second surface 111b of the fin base portion 111 so as to be substantially parallel to each other with a predetermined space therebetween. As described above, the heat radiation fins 112 radiate the heat generated from the light emitting elements 122 mounted on the substrate 120 to the outside.

  As shown in FIG. 5, the substrate 120 has a mounting surface 120a on which the light emitting element 122 is mounted and a contact surface 120b which is a back surface of the mounting surface 120a and which is in surface contact with the first surface 111a of the fin base portion 111. Have. As shown in FIG. 5, the plurality of light emitting elements 122 are mounted on the mounting surface 120a. In each of the drawings described below, a part of the light emitting elements is denoted by reference numeral 122, but a hemispherical member mounted on the mounting surface 120a of the substrate 120 corresponds to the light emitting element 122. The substrate 120 is formed in a shape smaller than the opening surface formed by the first step portion 111c so that the contact surface 120b and the first surface 111a of the fin base portion 111 can be in surface contact with each other.

  Further, as shown in FIGS. 3 to 5, the substrate 120 has screw through holes 121a to 121d through which the fixing screws 170a to 170d pass. Note that the substrate 120 according to the first embodiment is configured in the SMD (Surface Mount Device) type, and the plurality of light emitting elements 122 are mounted on the mounting surface 120a. However, the substrate 120 is not limited to the SMD type, and a plurality of light emitting elements 122 are arranged and mounted on a part or the whole of the mounting surface 120a in a regular order such as a matrix shape, a zigzag shape, or a radial shape. Chip on Board) type.

  As shown in FIGS. 4 and 5, in the board 120, the connectors 123a and 123b are mounted on the mounting surface 120a and the cutouts 124a and 124b are formed. The connectors 123a and 123b are connected to one end of a power line (not shown). The other end of the power supply line is connected to the power supply devices 42a and 42b via the cutouts 124a and 124b. Accordingly, the substrate 120 can cause the light emitting element 122 to emit light by the electric power supplied from the power supply devices 42a and 42b.

  Here, the light emitting element 122 may generate heat when it emits light, and may have a high temperature. The performance of the light emitting element 122 may deteriorate when the temperature becomes too high. In the lighting unit 100 according to the first embodiment, the heat radiation fins 112 are provided upright on the second surface 111b, which is the back surface of the first surface 111a that comes into close surface contact with the substrate 120. That is, in the lighting unit 100 according to the first embodiment, the fin base portion 111 transfers the heat generated from the light emitting element 122 to the heat dissipating fins 112 located on the back side of the light emitting element 122, so that heat is efficiently dissipated. can do.

  The washers 130a to 130d are flat washers that are inserted between the reflector 140 and the substrate 120, and have threaded holes through which the fixing screws 170a to 170d pass.

  The reflector 140 is made of, for example, a synthetic resin having light resistance, heat resistance, and electrical insulation, and adjusts the light distribution of the light emitted by the light emitting element 122 mounted on the substrate 120. Specifically, as shown in FIG. 5, the reflector 140 has an adjusting portion 142, which is a through hole, formed at a position facing the light emitting element 122. Due to the hole shape of the adjusting portion 142, the light distribution direction of the light emitted by the light emitting element 122 is adjusted. In addition, in each of the drawings described below, a part of the adjusting portion is denoted by reference numeral 142, but the hole formed in the reflector 140 facing the light emitting element 122 corresponds to the adjusting portion 142.

  Further, as shown in FIGS. 3 to 5, the reflector 140 has screw through holes 141a to 141d through which the fixing screws 170a to 170d pass. Further, the reflector 140 is formed in a shape smaller than the opening surface formed by the first step portion 111c of the fin base portion 111 so that it can be placed on the mounting surface 120a of the substrate 120.

  The spacers 150a to 150d are positioning portions that maintain the positions of the reflector 140 and the optical lens 160 at a predetermined distance. The spacers 150a to 150d are formed with screw holes through which the fixing screws 170a to 170d pass.

  The optical lens 160 diverges or focuses the light whose light distribution direction is adjusted by the adjustment unit 142 of the reflector 140. The optical lens 160 is formed with screw holes 161a to 161d through which the fixing screws 170a to 170d pass when the optical lens 160 is fixedly mounted on the fin base 111. Further, the optical lens 160 according to the first embodiment is larger than the opening surface formed by the first step 111c so that it can be placed on the first step 111c of the fin base 111, and It is formed in a shape smaller than the opening surface formed by the two-step portion 111d. The optical lens 160 according to the first embodiment is formed of a Fresnel lens and a fly's eye lens, which will be described later.

  The fixing screws 170a to 170d are made of metal, for example, and fix the optical lens 160, the reflector 140, and the substrate 120 to the fin base portion 111. For example, the fixing screw 170a passes through the screw through hole 161a of the optical lens 160, the spacer 150a, the screw through hole 141a of the reflector 140, the washer 130a, and the screw through hole 121a of the substrate 120 in this order, and the fixing screw 170a of the fin base 111 is removed. It is screwed into the screw hole 114a formed on the first surface 111a. Similarly, the fixing screws 170b, 170c and 170d are screwed into the screw holes 114b, 114c and 114d of the fin base portion 111, respectively.

  The lower surface cover 180 is, for example, a light-transmissive flat plate such as polycarbonate or acrylic resin. The lower surface cover 180 is larger than the opening surface formed by the second step 111d and is formed by the lower end edge of the fin base 111 so that it can be placed on the second step 111d of the fin base 111. Is formed in a shape smaller than the opening surface. The lower surface cover 180 plays a role of reducing glare that makes it difficult to directly look at the light emitting surface from the outside and a role of preventing the inside of the housing case 190 from being touched from the outside.

  The housing case 190 is made of, for example, a synthetic resin such as ABS resin or a metal such as aluminum die casting, and has upper and lower ends opened in a substantially rectangular shape. The lower end opening is formed with a protrusion 190a protruding inward from the edge of the lower end opening. Such a housing case 190 houses the fin base portion 111 on which the substrate 120, the reflector 140, and the optical lens 160 are fixedly mounted, and the lower surface cover 180. Further, the housing case 190 is formed with screw through holes 191a to 191d through which fixing screws (not shown) penetrate when fixed to the fixed frame 10.

[Disassembly example of lighting device]
Next, an example of disassembling the lighting device 1 according to the embodiment will be described. FIG. 6 is a perspective view showing an exploded example of the lighting device 1 according to the first embodiment. In FIG. 6, the lighting units 100 and 200 fixed to the fixed frame 10 will be described as an example.

  As shown in FIG. 6, the fixed frame 10 includes a pair of lower fixed portions 10a and 10b and a pair of erected portions 10c and 10d. The lower fixing portions 10a and 10b are planar members whose length in the lateral direction is substantially the same as the length in the height direction of the housing case 190, and are substantially the same distance as the length of the heat radiation fins 112 in the arrangement direction H1. They are located so that their surfaces face each other in the open state. The erected portions 10c and 10d extend from the upper ends of the lower fixed portions 10a and 10b by the length in the height direction of the radiation fins 112 to erect the lower fixed portions 10a and 10b.

  The lower fixed portion 10a of the fixed frame 10 is formed with cutout portions 11a to 11d which are partially cut away. Similarly, notches 11e to 11h are formed in the lower fixed portion 10b. Then, a fixing screw (not shown) penetrates the notch 11a of the lower fixed portion 10a and the screw through hole 191a of the housing case 190 and is screwed into the screw hole 113a of the fin base portion 111. Similarly, a fixing screw (not shown) penetrates the notch 11b and the screw through hole 191b and is screwed into the screw hole 113b. Similarly, with respect to the lower fixed portion 10b, a fixing screw (not shown) is screwed into a screw hole formed on the side surface of the fin base portion 111 via the cutout portions 11e and 11f. As a result, the lighting unit 100 is fixed to the fixed frame 10. Similarly, the lighting unit 200 is fixed to the fixed frame 10 by screwing a fixing screw through the notches 11c, 11d, 11g and 11h.

  Further, as shown in FIG. 6, on the upper surface of the fixed frame 10, a terminal block 41 and power supply devices 42a and 42b are fixedly installed. Further, a fixing screw (not shown) penetrates the screw through holes 14 a and 14 b formed in the mounting member 14 and is screwed into the screw holes 10 e and 10 f formed on the upper surface of the fixed frame 10, whereby the mounting member 14 is It is fixed to the fixed frame 10.

  Next, a mechanism in which the fixed frame 10 and the fixed frame 20 are fixedly installed will be described. As shown in FIG. 6, a pair of screw through holes 12 a and 12 b facing each other are formed in the lower fixed portion 10 a of the fixed frame 10. Further, in the erected portion 10c, a pair of screw through holes 13a and 13b facing each other are formed in an extended portion extending upward from the lower fixed portions 10a and 10b, and in the erected portion 10d, one pair opposed to each other. A pair of screw through holes 13c and 13d are formed. Further, as shown in FIGS. 1 and 2, in the fixed frame 20, as in the fixed frame 10, screw through holes are formed in the lower fixed portion and the erected portion. For example, as shown in FIG. 1, the fixed frame 20 is formed with screw through holes 23a and 23c corresponding to the screw through holes 13a and 13c of the fixed frame 10. Further, for example, as shown in FIG. 2, the fixed frame 20 is formed with a screw through hole 22a corresponding to the screw through hole 12a of the fixed frame 10.

  Then, as shown in FIG. 1, a spacer 31 is inserted between the screw through hole 13b of the fixed frame 10 and the screw through hole 23a of the fixed frame 20, and a fixing screw (not shown) penetrates the screw through hole 13b. While being screwed into the spacer 31, a fixing screw (not shown) penetrates the screw through hole 23 a and is screwed into the spacer 31. Similarly, the spacer 32 is inserted between the screw through hole 13d of the fixed frame 10 and the screw through hole 23c of the fixed frame 20, and a fixing screw (not shown) penetrates the screw through hole 13d and is screwed into the spacer 32. A fixing screw (not shown) penetrates the screw through hole 23c and is screwed into the spacer 32. Further, as shown in FIG. 2, a spacer 33 is inserted between the screw through hole 12b of the fixed frame 10 and the screw through hole 22a of the fixed frame 20, and a fixing screw (not shown) penetrates the screw through hole 12b. While being screwed into the spacer 33, a fixing screw (not shown) penetrates the screw through hole 22 a and is screwed into the spacer 33.

  In this way, the fixed frame 10 and the fixed frame 20 are fixedly installed. As a result, the lighting device 1 becomes a large-scale lighting fixture including the lighting units 100, 200, 300, and 400.

[Example of bottom surface of lighting device]
Next, an example of the external appearance of the lighting device 1 according to the first embodiment as viewed from above will be described. FIG. 7 is a top view showing the lighting device 1 according to the first embodiment. As shown in FIG. 7, in the lighting unit 100, each of the plurality of heat dissipating fins 112 has a protruding portion that protrudes outward from the edge of the second surface 111b (which may be the housing case 190) of the fin base portion 111. It has 112P. Specifically, each of the plurality of heat radiation fins 112 is erected on the second surface 111b so that a side longer than a predetermined side 111e that is an edge of the second surface 111b is substantially parallel to the side 111e. To be done. Similarly, the heat dissipation fins 212 included in the lighting unit 200, the heat dissipation fins 312 included in the lighting unit 300, and the heat dissipation fins 412 included in the lighting unit 400 also have protrusions similar to those of the heat dissipation fins 112.

  As described above, since the heat dissipation fins 112, 212, 312, and 412 according to the first embodiment have a planar shape having a large area having the protruding portion, the contact area with the air in the atmosphere is wide and the heat dissipation effect is improved. Can be improved.

  Further, as shown in FIG. 7, each of the lighting units 100, 200, 300 and 400 is fixed by the fixing frames 10 and 20 in a state where their heat radiation fins are not in contact with each other. Specifically, as shown in FIG. 7, the radiation fin 112 and the radiation fin 212 do not contact each other, and similarly, the radiation fin 312 and the radiation fin 412 do not contact each other. In other words, the fixed frame 10 is formed with notches 11a to 11h for fixing the lighting units 100 and 200 in a state where the heat radiation fin 112 and the heat radiation fin 212 are not in contact with each other. Similarly, the fixed frame 20 is provided with a cutout portion for fixing the lighting units 300 and 400 in a state where the heat radiation fin 312 and the heat radiation fin 412 are not in contact with each other.

  As described above, in the lighting device 1 according to the first embodiment, since the radiation fins 112, 212, 312, and 412 do not contact each other, the flow of air between the lighting units is not hindered and the heat radiation effect is improved. You can

  Further, as shown in FIG. 7, in the lighting units 100 and 200, the radiation fins 112 and 212 are arranged at the same positions as each other. In other words, the radiation fins 112 and 212 are located on the extension lines of each other. Similarly, in the lighting units 300 and 400, the radiation fins 312 and 412 are arranged at the same positions as each other. Thereby, for example, the air in the atmosphere is likely to flow in the direction D1 shown in FIG. 7 between the radiation fins 112 and 212. As a result, the heat dissipation fins 112 and 212 can obtain a high heat dissipation effect without retaining the air whose temperature has risen.

[Cross section of lighting unit]
Next, a cross section of the lighting unit 100 according to the first embodiment will be described. FIG. 8 is a diagram showing a cross section taken along line I-I shown in FIG. 1. As shown in FIG. 8, the substrate 120 is in close surface contact with the first surface 111 a of the fin base portion 111. Further, in the example shown in FIG. 8, light emitting elements 122a to 122f are mounted on the substrate 120. The reflector 140 is laminated with the washers 130a and 130c interposed between the reflector 140 and the substrate 120. In the reflector 140, adjusting portions 142a to 142f are formed at positions facing the light emitting elements 122a to 122f, respectively. The adjusting portions 142a to 142f are through holes whose diameter gradually increases in the direction from the light emitting element 122 toward the optical lens 160.

  The optical lens 160 is mounted on the first step 111 c of the fin base 111 with the spacers 150 a and 150 c interposed between the optical lens 160 and the reflector 140. Then, the fixing screw 170a penetrates the optical lens 160, the spacer 150a, the reflector 140, the washer 130a, and the substrate 120 in this order, and is screwed into the first surface 111a of the fin base portion 111. Similarly, the fixing screw 170c penetrates the optical lens 160, the spacer 150c, the reflector 140, the washer 130c, and the substrate 120 in this order, and is screwed into the first surface 111a of the fin base portion 111. In this way, the substrate 120, the reflector 140, and the optical lens 160 are fixed to the fin base portion 111.

  In the example shown in FIG. 8, a part of the spacers 150a and 150c is buried in the screw through holes 141a and 141c of the reflector 140. That is, the threaded holes 141a and the like of the reflector 140 are formed with a diameter larger than the outer diameter of the spacer 150a from the insertion direction of the spacer 150a to the middle so that the spacer 150a can be buried.

  The lower surface cover 180 is sandwiched between the second step portion 111d of the fin base portion 111 and the protruding portion 190a of the housing case 190. Although not shown here, the fixing screw penetrates the protruding portion 190a and the lower surface cover 180 in this order and is screwed into the second step portion 111d, so that the lower surface cover 180 is attached to the fin base portion 111. It is fixed.

  In this way, the spacers 150a and 150c are inserted between the reflector 140 and the optical lens 160 to position the reflector 140 and the optical lens 160 in a state of being separated by a predetermined distance. Accordingly, in the lighting unit 100 according to the first embodiment, it is possible to make it difficult for the optical lens 160 to be affected by the heat generated from the substrate 120. Further, the optical lens 160 needs to be separated from the light emitting element 122 by a predetermined distance in order to diverge or focus the light in a desired state. However, in the lighting unit 100 according to the first embodiment, the spacer 150a is provided. And 150c determine the distance between the reflector 140 and the optical lens 160, so that the optical lens 160 can diverge or focus light in a desired state.

  In addition, in the example shown in FIG. 8 (including FIG. 5), the first step portion 111c and the second step portion 111d are formed in the fin base portion 111, but the first step portion 111c and the second step portion 111c are formed. The step portion 111d is not a mechanism for positioning the optical lens 160 or the lower surface cover 180, but a mechanism for temporarily positioning. The positional relationship between the reflector 140 and the optical lens 160 is determined only by the spacers 150a to 150d. Therefore, the fin base portion 111 does not need to have a step formed by the first step portion 111c and the second step portion 111d.

  Further, in the first embodiment, the example in which the spacers 150a to 150d position the reflector 140 and the optical lens 160 so as to be separated from each other by a predetermined distance has been described, but the present invention is not limited to this example. For example, the positioning part that exhibits the same function as the spacers 150a to 150d may be formed integrally with the reflector 140 or may be formed integrally with the optical lens 160. For example, the reflector 140 may have a convex portion corresponding to a positioning portion that extends from the lower surface of the reflector 140 toward the optical lens 160. Similarly, the optical lens 160 may have a convex portion corresponding to a positioning portion extending from the upper surface of the optical lens 160 toward the reflector 140.

[Enlarged view of the optical lens]
Next, the optical lens 160 according to the first embodiment will be described. FIG. 9 is a diagram schematically showing an enlarged cross section of the optical lens 160 according to the first embodiment. FIG. 10 is a diagram illustrating an appearance example of an enlarged cross section of the optical lens 160 according to the first embodiment. As shown in FIGS. 9 and 10, in the optical lens 160 according to the first embodiment, a Fresnel lens 160a is formed at a position facing the light emitting element 122 (adjustment section 142), and a fly-eye lens is formed on the back surface of the Fresnel lens 160a. The lens 160b is formed.

  The Fresnel lens 160a refracts the light from the light emitting element 122, the light distribution direction of which is adjusted by the adjustment unit 142, into parallel light without attenuating the total amount of the light. Specifically, the Fresnel lens 160a refracts the light emitted from the adjusting unit 142 substantially perpendicularly to the fly-eye lens 160b without attenuating the light. Then, the fly-eye lens 160b diffuses the light refracted by the Fresnel lens 160a without attenuating it, and irradiates the light toward the lower surface cover 180 (not shown).

  Although not shown in FIG. 9, the optical lens 160 is disposed at a position facing each light emitting element 122 (adjustment section 142) at a position where the Fresnel lens 160a and the fly eye as shown in FIGS. The lens 160b is formed.

  As described above, in the optical lens 160 according to the first embodiment, the Fresnel lens 160a refracts the light emitted by the light emitting element 122 into parallel light, so that the interior of a room or the like is not attenuated without attenuating the total amount of the light. Can be illuminated. Further, since the optical lens 160 diffuses light by the fly-eye lens 160b, it is possible to reduce glare that is difficult to see directly from the outside. That is, the optical lens 160 can illuminate a room or the like without attenuating the total amount of light emitted by the light emitting element 122 and reducing glare, so that the light from the light emitting element 122 is emitted. It can be efficiently used to illuminate a room or the like.

[Effects of First Embodiment]
As described above, in the lighting unit 100 according to the first embodiment, the contact surface 120b of the substrate 120 is installed on the first surface 111a of the fin base portion 111, which is a supporting member, and the back surface of the first surface 111a. A plurality of heat radiation fins 112 are erected on the second surface 111b.

  Thereby, according to the lighting unit 100 according to the first embodiment, the fin base portion 111 causes the heat generated from the light emitting element 122 mounted on the substrate 120 to be dissipated to the heat dissipating fins 112 located on the back side of the light emitting element 122. Since it is efficiently transmitted, heat can be efficiently dissipated.

  In particular, when the light emitting element 122 such as an LED has a high output, the light emitting element 122 is likely to reach a high temperature. In such a situation, in a mechanism in which heat radiation fins are erected on a housing body or a reflector formed by aluminum die casting or the like, heat generated from the light emitting element 122 may not be efficiently transferred to the heat radiation fins. In order to obtain a sufficient heat radiation effect, it is necessary to make the radiation fin large. This leads to an increase in the size and weight of the lighting unit 100. On the other hand, since the lighting unit 100 according to the first embodiment can efficiently dissipate heat, it is possible to make the heat dissipation fin 112 have a large-scale shape even when using the high-power light emitting element 122. As a result, the size and weight of the lighting unit 100 (lighting device 1) can be reduced as a result.

  In addition, when the radiation fin has a large shape, it is necessary to raise the radiation fin. In such a case, it is necessary to provide an unnecessary region such as having a thickness at the base of the heat radiation fin for the draft taper. On the other hand, in the lighting unit 100 according to the first embodiment, the heat radiation fin 112 does not need to be formed in a large scale, and the heat radiation fin 112 is erected on the fin base portion 111. Need not be provided. Also from this, the lighting unit 100 according to the first embodiment can realize the downsizing and weight reduction of the lighting unit 100 (lighting device 1).

  Further, according to the lighting unit 100 according to the first embodiment, the plurality of heat radiation fins 112 have the protrusion 112P that protrudes outward from the edge of the second surface 111b of the fin base portion 111, so that the heat radiation effect is improved. Can be improved.

  Further, in the lighting unit 100 according to the first embodiment, the spacers 150 a to 150 d, which are the positioning portions, are reflected by the reflector 140 that adjusts the reflection direction of the light emitted by the light emitting element 122 and the reflector 140. The optical lens 160 that diverges or focuses the light is positioned so as to be separated by a predetermined distance.

  As a result, according to the lighting unit 100 of the first embodiment, it is possible to make it difficult for the optical lens 160 to be affected by heat generated from the substrate 120, and the optical lens 160 diverges or emits light in a desired state. It becomes possible to focus.

  In addition, in the lighting device 1 according to the first embodiment, the fixed frames 10 and 20 are in a state in which the respective radiation fins included in the lighting units 100, 200, 300, and 400 are not in contact with each other. And 400 are fixed. As a result, according to the lighting device 1 according to the first embodiment, it is possible to improve the heat radiation effect without hindering the air flow between the lighting units.

(Second embodiment)
The illumination device 1 and the illumination unit 100 described above may be implemented in various different forms other than the first embodiment. In the second embodiment, other embodiments such as the lighting device 1 and the lighting unit will be described. Note that, hereinafter, the illumination unit 100 will be mainly described as in the first embodiment, but the mechanism and the like described below can be applied to the illumination units 200, 300, and 400.

[Standing position of heat radiation fin]
In the above-described first embodiment, the example in which the heat radiation fin 112 is provided upright on the second surface 111b of the fin base portion 111 has been described. Here, the radiating fins 112 may be erected on the second surface 111b at a position on the back side of the light emitting element 122 mounted on the substrate 120. This point will be described with reference to FIG. FIG. 11: is a figure which shows typically the expanded cross section of the radiation fin 112 which concerns on 2nd Embodiment.

  In the example shown in FIG. 11, on the second surface 111b of the fin base portion 111, heat radiation fins 112a to 112m are provided upright on the back side of the light emitting elements 122a to 122m mounted on the substrate 120. As described above, in the lighting unit 100, the heat radiation fins 112 are erected at positions directly above the light emitting elements 122, so that the heat generated from the light emitting elements 122 can be efficiently generated as indicated by the arrows in FIG. 11. It can be transmitted to each radiation fin 112, and as a result, the radiation effect can be improved.

  Note that the radiating fins 112 shown in FIG. 11 are erected positions, and the radiating fins 112 may be erected at positions not facing the light emitting elements 122. For example, as in the example shown in FIG. 11, the heat radiation fins 112x and 112y may be provided upright at positions not facing the light emitting element 122. Further, for example, in the example shown in FIG. 11, a radiation fin (not shown) may be provided upright between the radiation fins 112a and 112b.

[Radiation fin standing mechanism]
Next, a standing mechanism of the heat radiation fin 112 will be described. FIG. 12 is a diagram schematically showing an enlarged cross section of the heat dissipation fin 112 according to the second embodiment. As shown in FIG. 12, one end of the radiation fin 112 is embedded in the second surface 111b of the fin base portion 111. Such a heat radiation fin 112 is embedded in the fin base portion 111 by being driven by a caulking striking rod or the like in the direction of the arrow shown in FIG. 12 while being crimped to the second surface 111b. It Specifically, the fin base portion 111 becomes a state in which it is raised from the second surface 111b as in the example shown in FIG. 12 by moving the area driven by a striking rod or the like to another area. One end of the portion 111 is embedded.

  By thus embedding one end of the heat radiation fin 112 in the fin base portion 111, the contact area between the heat radiation fin 112 and the fin base portion 111 increases. As a result, the lighting unit 100 can efficiently transfer the heat generated from the light emitting element 122 from the fin base portion 111 to each of the heat radiation fins 112, so that the heat radiation effect can be improved.

[Optical lens arrangement pattern]
Further, in the first embodiment, various arrangement patterns of the optical lens 160 shown in FIGS. 9 and 10 can be considered. This point will be described with reference to FIG. FIG. 13 is an explanatory diagram for explaining the arrangement pattern of the optical lens 160 according to the second embodiment. Note that, in FIG. 13, only the light emitting element 122 and the optical lens 160 are illustrated, and a view seen from above (direction from the light emitting element 122 toward the optical lens 160) is illustrated.

  In the example shown in <Arrangement Example 1> of FIG. 13, the rectangular optical lens 160 illustrated in FIG. 10 is arranged at a position facing each of the light emitting elements 122. However, not limited to this example, a circular optical lens 160 may be arranged at a position facing each of the light emitting elements 122 as in the example shown in <Arrangement example 2> of FIG. 13. When the substrate 120 and the like are originally formed in a circular shape, the light emitting elements 122 are mounted in a lattice on the circular substrate 120 as in the example shown in <Arrangement Example 3> of FIG. In some cases. In such a case, as in the example shown in <Arrangement Example 3> of FIG. 13, circular optical lenses 160 may be arranged at positions facing the respective light emitting elements 122.

[Reinforcement bar of heat radiation fin]
Further, since the heat dissipation fin 112 described in the first embodiment has a planar shape, it can be said that it is easily deformed by being bent or the like. Therefore, the lighting unit 100 may include a rod-shaped member penetrating each surface of the plurality of heat radiation fins. This point will be described with reference to FIGS. 14 and 15. 14 and 15 are explanatory views for explaining the rod-shaped member according to the second embodiment.

  As shown in FIG. 14, the rod-shaped members 115 a to 115 d are formed of a metal or the like having high thermal conductivity, and penetrate the surfaces of the plurality of heat radiation fins 112 erected on the fin base portion 111. Accordingly, the rod-shaped members 115a to 115d can integrate the plurality of heat radiation fins 112. That is, the plurality of heat radiation fins 112 are less likely to be deformed by reinforcing each other. In addition, in the example shown in FIG. 14, the rod-shaped members 115a to 115d can prevent the air flow from being obstructed by penetrating the peripheral portions (four corners) of the surfaces of the plurality of heat radiation fins 112.

  Further, in the example shown in FIG. 15, the communication rod-shaped members 116a to 116f penetrate the surfaces of the heat radiation fins 112 included in the lighting unit 100 and the heat radiation fins 312 included in the lighting unit 300. Thereby, the communication rod-shaped members 116a to 116f integrally integrate and reinforce a plurality of heat radiation fins across different lighting units, and thus the plurality of heat radiation fins can be more difficult to deform.

  14 and 15, the radiating fins 112 and 312 do not have the projecting portions 112P that project outward from the edges of the second surface 111b at both ends, but the radiating fins 112 and 312 do not project. You may have the part 112P.

[Arrangement of radiation fins]
Further, in the first embodiment, as shown in FIG. 7, the plurality of heat radiation fins 112 have the protrusions 112P protruding outward from the edges of the second surface 111b at both ends, and the fin base portion 111 is provided. An example in which they are arranged at regular intervals is shown above. However, the shape of the radiation fins 112 and the arrangement of the radiation fins 112 are not limited to this example. This point will be described with reference to FIG. FIG. 16 is an explanatory diagram for describing an arrangement example of the radiation fins 112 according to the second embodiment. Note that FIG. 16 shows a view of the heat dissipation fin 112 as viewed from above.

  As shown in FIG. 16, the plurality of heat dissipation fins 112A to 112H (the same applies to heat dissipation fins not denoted by the reference numeral) do not at least partially overlap with other heat dissipation fins adjacent in the arrangement direction H1. Alternatively, it is erected on the fin base portion 111 in a state where it does not entirely overlap with other heat radiation fins adjacent in the arrangement direction H1. Specifically, the radiating fins 112C are adjacent to the radiating fins 112A, 112B, 112E and 112F in the arrangement direction H1, but are erected so as not to overlap these radiating fins 112A, 112B, 112E and 112F in the arranging direction H1. To be done. Further, in the example shown in FIG. 16, two radiating fins 112A and 112B, two radiating fins 112C and 112D, etc. are erected in order at a position where the plane of the radiating fin and the arrangement direction H1 are perpendicular to each other. . Then, the radiation fins 112 are erected so as to be at different positions alternately in the arrangement direction.

  As a result, each radiating fin 112 allows each radiating fin 112 to move the air even when the air is flowing in a direction substantially perpendicular to the surface of each radiating fin, as shown by the arrow in FIG. Since it can be made to flow into 112, heat can be efficiently dissipated. For example, the lighting device 1 described so far is not necessarily installed on the ceiling or the like so as to illuminate downward, but may be installed on a wall or the like in the room so as to illuminate laterally. That is, in some cases, gravity acts from top to bottom as shown in FIG. In this case, due to the property that the higher the temperature of the air is, the air flows in the direction of the arrow shown in FIG. 16, but the radiation fins 112 arranged as shown in FIG. 16 efficiently radiate heat. be able to.

  Note that the arrangement mode of the heat radiation fins 112 is not limited to the example shown in FIG. 16, and for example, one heat radiation fin 112 (for example, the heat radiation fin 112A is provided at a position where the plane of the heat radiation fin and the arrangement direction H1 are perpendicular to each other. A heat radiation fin having a shape in which the heat radiation fin 112B and the heat radiation fin 112B are connected to each other may be provided upright. Further, for example, in FIG. 16, only the heat radiation fins arranged in a stepwise manner may be provided upright, such as the heat radiation fins 112A, 112C, 112F, 112H.

[Arrangement of radiation fins between lighting units]
Further, in the above-described first embodiment, the example in which the lighting device 1 includes the lighting units 100, 200, 300, and 400 in which the radiation fins are arranged in the same direction is shown, but the present invention is not limited to this example. This point will be described with reference to FIG. FIG. 17 is an explanatory diagram for explaining the orientation of the lighting unit according to the second embodiment.

  In the example shown in FIG. 17, each of the lighting units 100, 200, 300 and 400 has a different arrangement direction of the radiation fins from the other adjacent lighting units. For example, in the fixed frame 10, the lighting units 100 and 200 are fixed such that the arrangement direction of the heat radiation fins 112 is the first direction and the arrangement direction of the heat radiation fins 212 is the second direction substantially perpendicular to the first direction, The fixed frame 20 fixes the lighting units 300 and 400 such that the arrangement direction of the heat radiation fins 312 is the second direction and the arrangement direction of the heat radiation fins 412 is the first direction. Accordingly, the lighting device 1 can include the lighting units 100, 200, 300, and 400 in which the heat radiation fins are erected in the arrangement direction shown in FIG.

  In the lighting device 1 shown in FIG. 17, the flow of air is blocked between the radiation fins of the adjacent lighting units, so that heat can be prevented from being transferred between the lighting units. As a result, in the illuminating device 1 shown in FIG. 17, since the heat radiating action can be made independent for each illuminating unit, it is possible to achieve uniform heating of each illuminating unit.

[External member of lighting device 1]
Further, the lighting device 1 according to the first embodiment is often installed on a high ceiling such as a gymnasium. Therefore, the lighting device 1 may be attached with various members for installation on such a high ceiling. This point will be described with reference to FIGS. 18 to 20 are explanatory diagrams for explaining members attached to the lighting device 1 according to the second embodiment.

  In the example shown in FIG. 18, the lighting device 1 includes a guard member 61 and a mounting member 62. The guard member 61 is, for example, a transparent member, and covers the entire lighting device 1 to prevent a tool (for example, a ball) used in such a gymnasium from coming into contact with the lighting unit. The upper surface of the guard member 61 is, for example, in a state of being sandwiched between the mounting member 62 and the fixed frames 10 and 20, a fixing screw penetrates the screw through hole 62a of the mounting member 62 from above, and is attached to the mounting member 14. While being screwed into the formed screw hole 14c (see FIG. 1), the fixing screw penetrates the screw through hole 62b of the mounting member 62 from above, and the screw hole 24c formed in the mounting member 24 (see FIG. 1). ) Is attached to the attachment members 14 and 24.

  Further, in the example shown in FIG. 19, the lighting device 1 includes mounting members 71 and 72 and a tilt arm 73. The mounting member 71 has screw holes 71a and 71b formed therein. Then, in the mounting member 71, the fixing screw penetrates the screw passing hole 71a and is screwed into the screw passing hole 13a (see FIG. 1) formed in the erected portion 10c of the fixed frame 10 and the fixing screw passes through the screw. By passing through the hole 71b and being screwed into the screw through hole 13c (see FIG. 1) formed in the erected portion 10d, the fixed frame 10 is attached to the erected portion 10c. Similarly, the attachment member 72 is attached to the erected portion of the fixed frame 20, as shown in FIG.

  The tilt arm 73 is a member that changes the illumination angle of the lighting device 1. As shown in FIG. 19, the tilt arm 73 is mounted on the mounting member 71 mounted on the fixed frame 10 and the mounting member 72 mounted on the fixed frame 10. Mounted rotatably. Specifically, the inclined arm 73 is bent substantially vertically in the same direction at a position where it extends from the center of the planar shape by a predetermined value in both end directions, and screw holes 73a are formed at both ends. The inclined arm 73 has a screw through hole 73a at one end rotatably attached to the mounting member 71 and a screw through hole 73a at the multi-end rotatably attached to the mounting member 72.

  Further, in the example shown in FIG. 20, the lighting device 1 includes a mounting member 81 and a lifting device 82. The attachment member 81 is formed with screw holes 81a and 81b. Then, in the mounting member 81, a fixing screw penetrates the screw through hole 81a of the mounting member 81 from above and is screwed into the screw hole 14c (see FIG. 1) formed in the mounting member 14, and at the same time, the fixing screw from above. Is attached to the attachment members 14 and 24 by penetrating the screw through hole 81b of the attachment member 81 and screwed into a screw hole 24c (see FIG. 1) formed in the attachment member 24. The elevating device 82 is a device that elevates and lowers the lighting device 1, and is attached to the upper surface of the attachment member 81. The elevating device 82 includes a hanging rope, a winding drum that winds and rewinds the hanging rope, and a motor that drives the winding drum to rotate.

  When the guard member 61, the tilted arm 73, and the elevating device 82 shown in FIGS. 18 to 20 are attached to the lighting device 1, they are attached with anchor bolts or the like. Here, as the weight of the lighting device increases, it is preferable to increase the number of anchor bolts or increase the diameter of anchor bolts in consideration of earthquake resistance and the like. This means that the number of parts of the anchor bolt increases as the weight of the lighting device increases. On the other hand, since the lighting device 1 shown in FIGS. 18 to 20 can be made lightweight as described above, it is possible to suppress an increase in the number of anchor bolts and an increase in the diameter of the anchor bolts. For example, in the example shown in FIG. 18, it is possible to attach the guard member 61 to the lighting device 1 via the screw through holes 62a and 62b with only two anchor bolts.

[Other Embodiments]
Further, in the above-described embodiment, an example in which the lighting device 1 is installed on a high ceiling has been described, but the lighting device 1 can be applied to a direct lighting device other than the type installed on a high ceiling.

  Further, in the above-described embodiment, an example in which each member is fixed by the fixing screw is shown, but in the lighting device 1, each member may be fixed by a fixing member such as a pin other than the fixing screw.

  Further, the shape, the raw material, and the material of each member according to the above embodiment are not limited to those in the embodiment and illustrated. For example, the fin unit 110, the substrate 120, the reflector 140, the optical lens 160, the lower surface cover 180, and the housing case 190 may be circular instead of rectangular.

  As described above, according to the above embodiment, the heat dissipation effect can be improved.

  Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.

  The following is a supplementary note regarding the above embodiment.

(Appendix 1)
A substrate having a light emitting element mounted on one surface;
A support member having a first surface on which the other surface of the substrate is installed, and supporting the substrate installed on the first surface;
A plurality of plane-shaped heat radiation fins which are erected substantially parallel to each other on the second surface of the back surface of the first surface and spaced apart from each other;
A lighting unit including.

(Appendix 2)
The plurality of radiating fins have a protruding portion that protrudes outward from an edge of the second surface,
The lighting unit according to attachment 1.

(Appendix 3)
The plurality of heat radiation fins are erected on the second surface so that at least a part thereof does not overlap another heat radiation fin adjacent in the arrangement direction.
The lighting unit according to appendix 1 or 2.

(Appendix 4)
One end of the heat radiation fin is embedded in the second surface and extends in a direction away from the second surface.
The lighting unit according to any one of appendices 1 to 3.

(Appendix 5)
A metal rod-shaped member penetrating each surface of the plurality of heat radiation fins;
The illumination unit according to any one of appendices 1 to 4, further comprising:

(Appendix 6)
The rod-shaped member penetrates a peripheral portion of each surface of the plurality of heat radiation fins.
The lighting unit according to attachment 5.

(Appendix 7)
The plurality of heat radiation fins are provided upright on the back side of the second surface where the light emitting element is mounted.
The lighting unit according to any one of appendices 1 to 6.

(Appendix 8)
The support member is made of metal having thermal conductivity,
The lighting unit according to any one of appendices 1 to 7.

(Appendix 9)
A plurality of lighting units according to any one of appendices 1 to 8;
A fixing frame for fixing the plurality of lighting units in a state where the heat radiation fins of the plurality of lighting units are not in contact with each other;
A lighting device further comprising:

(Appendix 10)
The fixed frame fixes the plurality of lighting units in a state in which the radiating fins are arranged in different directions between adjacent lighting units.
The lighting device according to attachment 9.

(Appendix 11)
A metal connecting rod-shaped member that penetrates the respective surfaces of the plurality of heat radiation fins included in the plurality of lighting units;
11. The lighting device according to supplementary note 9 or 10, further comprising:

(Appendix 12)
A transparent guard member covering the lighting device;
The illumination device according to any one of appendices 9 to 11, further comprising:

(Appendix 13)
A tilting arm rotatably attached to the fixed frame;
The illumination device according to any one of appendices 9 to 12, further comprising:

(Appendix 14)
An elevating device for elevating the lighting device;
The illumination device according to any one of appendices 9 to 13, further comprising:

1 Lighting Device 100 Lighting Unit 110 Fin Unit 111 Fin Base Part 111a First Surface 111b Second Surface 112 Heat Dissipation Fin 120 Substrate 120a Mounting Surface 120b Contact Surface 122 Light Emitting Element 140 Reflector 150a Spacer 160 Optical Lens 180 Bottom Cover 190 Housing Case

Claims (1)

A substrate on which the light emitting element is mounted;
Is supported by the supporting member, whereas the substrate on the side, and a plurality of lighting units with a heat dissipating fin of multiple other side in;
Together it is attached to the support member for supporting lifting the lighting unit, a fixed frame having a pair of bridging portions extending in radiating fin height direction;
And power provided to the upper portion of the fixed frame;
A mounting member disposed between the pair of the erected portions of the fixed frame , to which a tilt arm is mounted ;
A lighting device comprising:

Images