JP2018049850A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce heat impact during lighting.SOLUTION: A lighting device includes a lighting unit and a mount member. The lighting unit includes: a substrate implemented with a light-emitting device; and a support member having one side face to which the substrate is installed; and heat radiation fins of which lower side is crimped at the other side face of the support member. The mount member supports the lighting unit to mount the lighting unit to an installation place.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a lighting device.

  2. Description of the Related Art Conventionally, an illumination device using a semiconductor light emitting element such as an LED (Light Emitting Diode) as a light source has been used. Such an illuminating device includes, for example, a reflector that adjusts the light distribution of light emitted from the light source, and an optical lens that diverges or focuses the light whose light distribution is adjusted by the reflector, and heat generated from the light source. In some cases, a heat radiating fin for radiating heat to the outside is erected on the outer wall of the reflector.

German Patent Application No. 202008016231 JP 2007-134316 A

  The problem to be solved by the present invention is to provide a lighting device that can reduce the influence of heat during lighting.

  The lighting device according to the embodiment includes a lighting unit and a mounting member. The lighting unit includes a substrate on which the light emitting element is mounted, a support member on which the substrate is installed on one surface, and a heat radiation fin provided on the other side of the support member by pressing the lower side thereof. The attachment member supports the illumination unit and attaches it to the installation location.

FIG. 1 is a perspective view showing an example of the appearance of the lighting apparatus according to the first embodiment. FIG. 2 is a perspective view illustrating an appearance example of the illumination device according to the first embodiment. FIG. 3 is an exploded perspective view showing the illumination 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 illumination unit according to the first embodiment. FIG. 6 is a perspective view illustrating an exploded example of the illumination device according to the first embodiment. FIG. 7 is a top view showing the lighting apparatus according to the first embodiment. FIG. 8 is a view showing a cross section taken along line II shown in FIG. 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 diagram schematically illustrating an enlarged cross section of the heat dissipating fin according to the second embodiment. FIG. 12 is a diagram schematically illustrating an enlarged cross section of the heat dissipating fin according to the second embodiment. FIG. 13 is an explanatory diagram for explaining an arrangement pattern of the optical lenses according to the second embodiment. FIG. 14 is an explanatory diagram for explaining a rod-shaped member according to the second embodiment. FIG. 15 is an explanatory diagram for explaining a rod-shaped member according to the second embodiment.

  The lighting units 100, 200, 300, and 400 according to the embodiments described below are disposed on the mounting surface 120 a on which the light emitting element 122 is mounted and the mounting surface 120 a of the substrate 120, and emit light by the light emitting element 122. The reflector 140 that adjusts the reflection direction of the reflected light, the optical lens 160 that diverges or focuses the light reflected by the reflector 140, and the reflector 140 and the optical lens 160 are positioned in a state where they are separated by a predetermined distance. Positioning portions (spacers 150a to 150d).

  Moreover, in the illumination units 100, 200, 300, and 400 according to the embodiment, the positioning unit positions the reflector 140 and the optical lens 160 by being interposed between the reflector 140 and the optical lens 160.

  In the illumination units 100, 200, 300, and 400 according to the embodiment, the reflector 140 is formed integrally with the positioning unit.

  Moreover, the illumination units 100, 200, 300, and 400 according to the embodiment have the first surface 111a on which the back surface of the mounting surface 120a of the substrate 120 is installed, and supports the substrate 120 installed on the first surface 111a. A supporting member (fin base portion 111) and a plurality of planar radiating fins 112 that are embedded in one end on the second surface 111b on the back surface of the first surface 111a and are substantially parallel to each other with a space therebetween. In addition.

  Moreover, the illuminating device 1 which concerns on embodiment is equipped with the illumination units 100, 200, 300, and 400, and is a some illumination unit in the state which each radiation fin which the some illumination units 100, 200, 300, and 400 comprise does not contact. Fixed frames 10 and 20 for fixing 100, 200, 300 and 400 are further provided.

  Hereinafter, an illumination unit and an illumination device according to an embodiment will be described with reference to the drawings. In the embodiment, the same parts are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
[External appearance of lighting device]
FIG.1 and FIG.2 is a perspective view which shows the example of an external appearance of the illuminating device 1 which concerns on 1st Embodiment. In FIG. 1, the example which looked at the illuminating device 1 from diagonally upward direction is shown, and in FIG. 2, the example which looked at the illuminating device 1 from diagonally downward direction is shown.

  The lighting device 1 shown in FIG. 1 and FIG. 2 is installed on a high ceiling in a building such as a gymnasium, for example, and emits light emitting elements such as LEDs mounted therein to emit light, as shown in FIG. 1 and FIG. Illuminates a wide space located in the downward direction.

  In the example illustrated 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, by fixing the fixed frame 10 and the fixed frame 20 to each other, the lighting device 1 includes four lighting units 100, 200, 300, and 400.

  Hereinafter, each member shown in FIG.1 and FIG.2 is demonstrated more concretely. Since the illumination units 100, 200, 300, and 400 have the same structure, the illumination 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 illumination 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 houses 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, as shown in FIGS. 1 and 2, the lighting unit 100 has a plurality of heat radiating fins 112 erected above the housing case 190. The radiating fins 112 release heat generated from the light emitting elements housed in the housing case 190 to the outside. In each drawing described below, reference numeral 112 may be attached to some of the radiating fins, but a planar member standing above the casing case 190 corresponds to the radiating 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. The fixed frame 10 and the fixed frame 20 are fixed to each other via spacers 31 to 33. The fixing mechanism in the fixing frames 10 and 20 will be described later.

  As shown in FIG. 1, the fixed frame 10 is provided with an attachment member 14, a terminal block 41, and power supply devices 42a and 42b. The attachment member 14 is made of, for example, metal and is attached to a 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 power relayed from the terminal block 41 to a substrate mounted inside the lighting units 100 and 200 via a power line (not shown). Similarly, the fixed frame 20 is provided with the attachment member 24, the terminal block 51, and the power supply devices 52a and 52b. In addition, the illuminating device 1 will be installed in a ceiling, for example, when the attachment members 14 and 24 are attached to a ceiling etc.

[Disassembly example of lighting unit]
Next, a disassembled example of the lighting unit 100 according to the first embodiment will be described. 3 to 5 are perspective views showing an exploded example of the illumination unit 100 according to the first embodiment. 3 shows an example in which the illumination unit 100 is seen from an obliquely upward direction, FIG. 4 shows an example in which the illumination unit 100 is seen from an obliquely downward direction, and FIG. 5 shows an enlargement of a portion shown in FIG. The figure is shown.

  As shown in FIGS. 3 and 4, the illumination 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, Fixing screws 170a to 170d, a lower surface cover 180, and a housing case 190 are provided.

  The fin unit 110 is made of a metal having high thermal conductivity, and includes a fin base portion 111 and radiating fins 112. The fin base portion 111 is a support member on which the substrate 120 is installed. As shown in FIG. 5, the first surface 111 a that is in close surface contact with the substrate 120 and the back surface of the first surface 111 a and the heat dissipating fins 112. Has a second surface 111b.

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

  As shown in FIGS. 3 and 4, screw holes 113 a and 113 b 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 outer wall side surface of the fin base 111. It is formed. Although illustration is omitted, screw holes similar to the screw holes 113a and 113b are formed on the side surface of the fin base portion 111 that faces the side surface on which the screw holes 113a and 113b are formed. Further, as shown in FIG. 4, screw holes 114 a to 114 d into which the fixing screws 170 a to 170 d are screwed are formed in the first surface 111 a of the fin base portion 111.

  The heat radiating fins 112 are erected on the second surface 111b of the fin base portion 111 substantially parallel to each other with a predetermined interval therebetween. As described above, the heat dissipating fins 112 release 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 includes a mounting surface 120a on which the light emitting element 122 is mounted, and a contact surface 120b which is the back surface of the mounting surface 120a and is in close surface contact with the first surface 111a of the fin base portion 111. Have. As shown in FIG. 5, a plurality of light emitting elements 122 are mounted on the mounting surface 120a. In each of the drawings described below, reference numeral 122 is assigned to some of the light emitting elements, but the hemispherical member mounted on the mounting surface 120 a 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 come into surface contact.

  As shown in FIGS. 3 to 5, the substrate 120 is formed with screw through holes 121 a to 121 d through which the fixing screws 170 a to 170 d penetrate. In addition, the board | substrate 120 which concerns on 1st Embodiment shall be comprised by SMD (Surface Mount Device) type, and the some light emitting element 122 is mounted in the mounting surface 120a. However, the substrate 120 is not limited to the SMD type, and a COB (mounting) in which 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 staggered shape, or a radial shape. Chip on Board) type.

  As shown in FIGS. 4 and 5, the board 120 has connectors 123 a and 123 b mounted on the mounting surface 120 a to form notches 124 a and 124 b. One end of a power line (not shown) is connected to the connectors 123a and 123b. The other end of the power supply line is connected to the power supply devices 42a and 42b via the notches 124a and 124b. Thereby, the board | substrate 120 can make the light emitting element 122 light-emit with the electric power supplied from the power supply devices 42a and 42b.

  Here, the light emitting element 122 generates heat when it emits light, and may become high temperature. The performance of the light emitting element 122 may deteriorate when the temperature becomes too high. In the illumination unit 100 according to the first embodiment, the radiation fins 112 are erected on the second surface 111b that is the back surface of the first surface 111a that is in close surface contact with the substrate 120. That is, in the lighting unit 100 according to the first embodiment, the heat generated from the light emitting element 122 is transmitted by the fin base portion 111 to the heat radiating fins 112 located on the back side of the light emitting element 122, so that heat can be efficiently radiated. can do.

  The washers 130a to 130d are planar washers inserted between the reflector 140 and the substrate 120, and are formed with screw through 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 light emitted by the light emitting element 122 mounted on the substrate 120. Specifically, as shown in FIG. 5, the reflector 140 is formed with an adjustment portion 142 that is a through hole at a position facing the light emitting element 122. The light distribution direction of the light emitted by the light emitting element 122 is adjusted by the hole shape of the adjusting unit 142. In each of the drawings described below, reference numeral 142 is attached to some of the adjustment portions, but the holes formed in the reflector 140 facing the light emitting element 122 correspond to the adjustment portion 142.

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

  The spacers 150a to 150d are positioning units that maintain the positions of the reflector 140 and the optical lens 160 separated by a predetermined distance. The spacers 150a to 150d are formed with screw through 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 adjusting unit 142 of the reflector 140. When the optical lens 160 is fixed to the fin base portion 111, screw through holes 161a to 161d are formed through which the fixing screws 170a to 170d pass. In addition, the optical lens 160 according to the first embodiment is larger than the opening surface formed by the first step portion 111c so that the optical lens 160 can be placed on the first step portion 111c of the fin base portion 111. It is formed in a shape smaller than the opening surface formed by the two-step part 111d. The optical lens 160 according to the first embodiment is formed by a Fresnel lens and a fly-eye lens, which will be described later.

  The fixing screws 170 a to 170 d are made of, for example, metal, and fix the optical lens 160, the reflector 140, and the substrate 120 to the fin base 111. For example, the fixing screw 170 a passes through the screw through hole 161 a of the optical lens 160, the spacer 150 a, the screw through hole 141 a of the reflector 140, the washer 130 a, and the screw through hole 121 a of the substrate 120 in this order. 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 a light-transmitting flat plate such as polycarbonate or acrylic resin. The lower surface cover 180 is larger than the opening surface formed by the second step portion 111d and formed by the lower end edge of the fin base portion 111 so as to be placed on the second step portion 111d of the fin base portion 111. It is formed in a shape smaller than the opening surface. Such a lower surface cover 180 has a role for reducing glare that makes it difficult to directly view the light emitting surface from the outside, a role for preventing the inside of the housing case 190 from being touched from the outside, and the like.

  The casing case 190 is made of, for example, a synthetic resin such as ABS resin or a metal such as aluminum die casting, and both upper and lower ends are 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 casing case 190 accommodates the fin base 111 on which the substrate 120, the reflector 140, and the optical lens 160 are fixed, and the lower surface cover 180. Further, the casing case 190 is formed with screw through holes 191a to 191d through which a fixing screw (not shown) passes when fixed to the fixed frame 10.

[Disassembly example of lighting device]
Next, a disassembled example of the lighting device 1 according to the embodiment will be described. FIG. 6 is a perspective view showing an exploded example of the illumination device 1 according to the first embodiment. In FIG. 6, the illumination 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 set of lower fixing portions 10 a and 10 b and a set of installation portions 10 c and 10 d. The lower fixed portions 10a and 10b are planar members whose length in the short direction is substantially the same as the length in the height direction of the casing case 190, and have a distance that is substantially the same as the length in the arrangement direction H1 of the radiation fins 112. They are positioned so that their surfaces face each other in a vacant state. The installation parts 10c and 10d extend from the upper ends of the lower fixing parts 10a and 10b more than the length in the height direction of the radiation fins 112 and install the lower fixing parts 10a and 10b.

  The lower fixed portion 10a of the fixed frame 10 is formed with cutout portions 11a to 11d that are partially cut away. Similarly, notches 11e to 11h are formed in the lower fixed portion 10b. Then, a fixing screw (not shown) passes through the notch portion 11a of the lower fixing portion 10a and the screw through hole 191a of the casing case 190 and is screwed into the screw hole 113a of the fin base portion 111. Similarly, a fixing screw (not shown) passes through the notch portion 11b and the screw through hole 191b and is screwed into the screw hole 113b. Similarly, for 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 notches 11e and 11f. Thereby, the illumination unit 100 is fixed to the fixed frame 10. Similarly, the illumination 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, the terminal block 41 and the power supply devices 42 a and 42 b are fixedly provided on the upper surface of the fixed frame 10. Further, the fixing screw (not shown) passes through 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 in the upper surface of the fixing frame 10. Fixed to the fixed frame 10.

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

  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) passes through the screw through hole 13b. While being screwed into the spacer 31, a fixing screw (not shown) passes through the screw through hole 23 a and is screwed into the spacer 31. Similarly, a 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) passes through the screw through hole 13d and is screwed into the spacer 32. A fixing screw (not shown) passes through the screw 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) passes through the screw through hole 12b. While being screwed into the spacer 33, a fixing screw (not shown) passes through 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 fixed. As a result, the lighting device 1 is a large-scale lighting fixture including the lighting units 100, 200, 300, and 400.

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

  Thus, since the radiation fins 112, 212, 312 and 412 according to the first embodiment have a planar shape with a large area having protrusions, the contact area with the air in the atmosphere becomes wide, and the heat radiation effect is obtained. Can be improved.

  Further, as shown in FIG. 7, each of the lighting units 100, 200, 300, and 400 is fixed by the fixed frames 10 and 20 in a state where the radiating fins do not contact each other. Specifically, as shown in FIG. 7, the radiation fins 112 and the radiation fins 212 do not contact each other, and similarly, the radiation fins 312 and the radiation fins 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 radiating fins 112 and the radiating fins 212 are not in contact with each other. Similarly, the fixed frame 20 is formed with a notch for fixing the lighting units 300 and 400 in a state where the heat radiating fins 312 and the heat radiating fins 412 are not in contact with each other.

  Thus, since the radiating fins 112, 212, 312 and 412 do not contact each other, the lighting device 1 according to the first embodiment does not hinder the flow of air between the lighting units and improves the heat dissipation effect. Can do.

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

[Cross section of lighting unit]
Next, a cross section of the illumination unit 100 according to the first embodiment will be described. FIG. 8 is a view showing a cross section taken along line II shown in FIG. 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. In the example illustrated in FIG. 8, the light emitting elements 122 a to 122 f are mounted on the substrate 120. The reflector 140 is laminated with the washers 130a and 130c interposed between the reflector 120 and the substrate 120. In the reflector 140, adjustment 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 diameters gradually increase in the direction from the light emitting element 122 toward the optical lens 160.

  The optical lens 160 is placed on the first step portion 111 c of the fin base portion 111 with the spacers 150 a and 150 c interposed between the optical lens 160 and the reflector 140. The fixing screw 170a passes through 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 passes through 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 111. In this manner, 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 150 a and 150 c is buried in the screw through holes 141 a and 141 c of the reflector 140. That is, the threaded hole 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.

  Further, the lower surface cover 180 is sandwiched between the second step portion 111 d of the fin base portion 111 and the protruding portion 190 a of the housing case 190. Although illustration is omitted here, a fixing screw passes through the protruding portion 190 a and the lower surface cover 180 in this order and is screwed into the second step portion 111 d, so that the lower surface cover 180 is attached to the fin base portion 111. It is fixed.

  As described above, the spacers 150a and 150c are interposed between the reflector 140 and the optical lens 160, thereby positioning the reflector 140 and the optical lens 160 at a predetermined distance. Thereby, in the illumination 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. The optical lens 160 needs to be separated from the light emitting element 122 by a predetermined distance in order to diverge or focus light in a desired state. In the illumination unit 100 according to the first embodiment, the spacer 150a is used. 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 the example shown in FIG. 8 (including FIG. 5), the example in which the first step portion 111c and the second step portion 111d are formed in the fin base portion 111 is shown, but the first step portion 111c and the second step portion 111d are shown. 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. Accordingly, the fin base portion 111 may not have a step formed by the first step portion 111c and the second step portion 111d.

  In the first embodiment, the spacers 150a to 150d are positioned in a state where the reflector 140 and the optical lens 160 are separated by a predetermined distance. However, the present invention is not limited to this example. For example, a positioning portion that exhibits the same function as the spacers 150a to 150d may be formed integrally with the reflector 140 or formed integrally with the optical lens 160. For example, the reflector 140 may have a convex portion corresponding to a positioning portion that extends in a direction 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 in a direction from the upper surface of the optical lens 160 toward the reflector 140.

[Enlarged view of 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 unit 142), and a fly-eye is formed on the back surface of the Fresnel lens 160a. A lens 160b is formed.

  The Fresnel lens 160a refracts the light from the light emitting element 122 whose light distribution direction has been adjusted by the adjusting unit 142 into parallel light without attenuating the total light amount of the light. Specifically, the Fresnel lens 160a refracts light irradiated from the adjustment unit 142 substantially vertically with respect to the fly-eye lens 160b without attenuation. The fly-eye lens 160b diffuses the light refracted by the Fresnel lens 160a without being attenuated, and irradiates the light toward the lower surface cover 180 (not shown).

  Although illustration is omitted in FIG. 9, the optical lens 160 is disposed at a position facing each light emitting element 122 (adjustment unit 142), such as the Fresnel lens 160 a and the fly-eye as illustrated in FIGS. 9 and 10. A lens 160b is formed.

  As described above, since the optical lens 160 according to the first embodiment refracts the light emitted from the light emitting element 122 into parallel light by the Fresnel lens 160a, the room or the like can be used without attenuating the total amount of the light. Can be illuminated. Moreover, since the optical lens 160 diffuses light by the fly-eye lens 160b, it is possible to reduce glare that is difficult to view directly from the outside. That is, the optical lens 160 can illuminate a room or the like without reducing 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 can be illuminated. The room can be illuminated efficiently.

[Effect of the 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 that is a support member, and the back surface of the first surface 111a. A plurality of radiating fins 112 are erected on the second surface 111b.

  Thereby, according to the illumination unit 100 according to the first embodiment, the heat generated from the light emitting element 122 mounted on the substrate 120 by the fin base portion 111 is applied to the heat dissipating fins 112 located on the back side of the light emitting element 122. Since it is transmitted efficiently, it is possible to dissipate heat efficiently.

  In particular, when the light emitting element 122 such as an LED has a high output, the light emitting element 122 is likely to be at a high temperature. In such a situation, the mechanism in which the radiating fins are erected on the casing main body and the reflector formed by aluminum die casting or the like, the heat generated from the light emitting element 122 may not be efficiently transmitted to the radiating fins, In order to obtain a sufficient heat dissipation effect, it is necessary to make the heat dissipation fins 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, the heat dissipating fins 112 can be formed in a large-scale shape even when the high-power light-emitting element 122 is used. As a result, the lighting unit 100 (lighting device 1) can be reduced in size and weight.

  Moreover, when making a radiation fin large, it is necessary to make a radiation fin high. In such a case, it is necessary to provide an unnecessary region such as giving a thickness to the base portion of the radiating fin for the taper. On the other hand, the lighting unit 100 according to the first embodiment does not require the radiating fins 112 to have a large shape, and the radiating fins 112 are erected on the fin base portion 111. There is no need to provide. Also from such a thing, the illumination unit 100 which concerns on 1st Embodiment can implement | achieve size reduction and weight reduction of the illumination unit 100 (illumination device 1).

  In addition, according to the lighting unit 100 according to the first embodiment, since the plurality of heat radiating fins 112 have the protruding portions 112P that protrude outward from the edge of the second surface 111b of the fin base portion 111, the heat radiating effect is obtained. Can be improved.

  In the illumination unit 100 according to the first embodiment, the spacers 150 a to 150 d serving as 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 for diverging or converging the light is positioned in a state separated by a predetermined distance.

  Thus, according to the illumination 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, and the optical lens 160 diverges or emits light in a desired state. It is possible to focus.

  Moreover, in the illuminating device 1 which concerns on 1st Embodiment, the fixed frames 10 and 20 are in the state which each radiating fin which the illumination units 100, 200, 300, and 400 comprise does not contact, such illumination units 100, 200, 300. And 400 are fixed. Thereby, according to the illuminating device 1 which concerns on 1st Embodiment, the heat flow effect can be improved, without inhibiting the flow of the air between each illumination unit.

(Second Embodiment)
The lighting device 1 and the lighting 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. In the following, as in the first embodiment, the illumination unit 100 will be mainly described. However, the mechanism and the like described below can also be applied to the illumination units 200, 300, and 400.

[Standing position of heat radiation fin]
In the first embodiment, the example in which the radiating fin 112 is erected on the second surface 111b of the fin base 111 has been described. Here, the radiation fins 112 may be erected on the second surface 111 b 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 diagram schematically showing an enlarged cross section of the heat dissipating fin 112 according to the second embodiment.

  In the example illustrated in FIG. 11, the heat radiation fins 112 a to 112 m are erected on the second surface 111 b of the fin base 111 on the back side of the light emitting elements 122 a to 122 m mounted on the substrate 120. As described above, the lighting unit 100 is configured such that each radiating fin 112 is erected at a position immediately above the light emitting element 122, thereby efficiently generating heat generated from the light emitting element 122 as indicated by an arrow in FIG. Each heat radiation fin 112 can be transmitted, and as a result, the heat radiation effect can be improved.

  Note that the standing position of the radiation fin 112 illustrated in FIG. 11 is an example, and the radiation fin 112 may be disposed at a position not facing the light emitting element 122. For example, as in the example illustrated in FIG. 11, the heat radiation fins 112 x and 112 y may be provided upright at positions that do not face the light emitting element 122. In addition, for example, in the example illustrated in FIG. 11, a radiation fin (not shown) may be provided between the radiation fin 112 a and the radiation fin 112 b.

[Standing mechanism of heat radiation fin]
Next, the standing mechanism of the radiation fin 112 will be described. FIG. 12 is a diagram schematically showing an enlarged cross section of the heat dissipating fin 112 according to the second embodiment. As shown in FIG. 12, one end of the heat radiation fin 112 is embedded in the second surface 111 b of the fin base portion 111. Such a radiating fin 112 is embedded in the fin base portion 111 by being driven with a caulking stick or the like in the direction of the arrow shown in FIG. The Specifically, the fin base portion 111 is raised from the second surface 111b as in the example shown in FIG. 12 by moving the region driven by a hitting stick or the like to another region, and the fin base portion 111 One end of the portion 111 is embedded.

  As described above, since one end of the radiating fin 112 is embedded in the fin base portion 111, the contact area between the radiating fin 112 and the fin base portion 111 is increased. As a result, the illumination unit 100 can efficiently transmit the heat generated from the light emitting element 122 from the fin base portion 111 to each heat dissipating fin 112, thereby improving the heat dissipating effect.

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

  In the example shown in <Arrangement Example 1> in FIG. 13, the rectangular optical lens 160 illustrated in FIG. 10 is disposed at a position facing each of the light emitting elements 122. However, the present invention is not limited to this example, and 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 <Placement example 2> in FIG. In the first place, when the substrate 120 or the like is formed in a circular shape, the light emitting elements 122 are mounted on the circular substrate 120 in a grid pattern as in the example shown in <Arrangement Example 3> in FIG. In some cases. In such a case, a circular optical lens 160 may be disposed at a position facing each of the light emitting elements 122 as in the example illustrated in <Disposition Example 3> in FIG.

[Reinforcing fin fin]
Moreover, since the radiation fin 112 demonstrated in the said 1st Embodiment is a planar shape, it can be said that it is easy to deform | transform, such as bending. Therefore, the lighting unit 100 may include a bar-like member that penetrates each surface of the plurality of heat radiation fins. This point will be described with reference to FIGS. FIG.14 and FIG.15 is explanatory drawing for demonstrating the rod-shaped member which concerns on 2nd Embodiment.

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

  In addition, in the example illustrated in FIG. 15, the communication rod-like members 116 a to 116 f pass through the surfaces of the radiation fins 112 included in the illumination unit 100 and the radiation fins 312 included in the illumination unit 300. Thereby, since the connecting rod-like members 116a to 116f integrate and reinforce the plurality of radiating fins across different lighting units, the plurality of radiating fins can be made more difficult to deform.

  14 and 15 show an example in which the radiating fins 112 and 312 do not have the protruding portions 112P protruding outward from the edges at both ends of the second surface 111b. However, the radiating fins 112 and 312 are not protruding. The portion 112P may be included.

[Other Embodiments]
Moreover, although the said embodiment demonstrated the example installed in a high ceiling, the illuminating device 1 is applicable also to direct attachment lighting fixtures other than the type installed in a high ceiling.

  Moreover, although the example which fixes each member with a fixing screw was shown in the said embodiment, each member may be fixed with fixing members, such as pins other than a fixing screw, in the illuminating device 1. FIG.

  Moreover, the shape, the raw material, and the material of each member which concern on the said embodiment are not restricted to embodiment or what was illustrated. For example, the fin unit 110, the substrate 120, the reflector 140, the optical lens 160, the lower surface cover 180, and the casing case 190 may be circular instead of rectangular.

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

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example 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 scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Illumination device 100 Illumination unit 110 Fin unit 111 Fin base part 111a 1st surface 111b 2nd surface 112 Radiation fin 120 Board | substrate 120a Mounting surface 120b Contact surface 122 Light emitting element 140 Reflector 150a Spacer 160 Optical lens 180 Lower surface cover 190 Housing case

Claims (2)

An illumination unit comprising: a substrate on which a light emitting element is mounted; a support member on which the substrate is installed on one surface; and a heat dissipating fin provided on the other surface of the support member by pressing the lower side thereof. ;
An attachment member that supports the lighting unit and attaches to the installation location;
A lighting device comprising:   The lighting device according to claim 1, wherein the support member is integrally provided with an outer wall on at least a part of a peripheral edge of the other side.

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