JP6768903B2 - Lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a lighting device.

Conventionally, a lighting device using a semiconductor light emitting element such as an LED (Light Emitting Diode) as a light source has been used. Such a lighting device includes, for example, a reflector for adjusting the light distribution of light emitted from a light source and an optical lens for diverging or focusing the light whose light distribution is adjusted by the reflector, and heat generated from the light source. A heat radiating fin for radiating heat to the outside may be erected on the outer wall of the reflector.

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

An object to be solved by the present invention is to provide a lighting device capable of reducing the thermal influence during lighting.

The lighting device according to the embodiment includes a plurality of heat radiation fins, a support member, a power supply device, a fixed frame, and a mounting member . The plurality of heat radiation fins have a planar shape that is erected at intervals from each other. The support member has a substrate on which a light emitting element is mounted on the first surface, the heat radiation fins on the second surface, and an outer wall side surface from the first surface to the second surface. The fixing frame has a plurality of erection portions extending perpendicularly to the support member, and the fixing portion below the erection portion is fixed to the outer wall side surface of the support member. The attachment member is attached to the fixed frame, is used for installing the own device, and is rotatable so as to change the illumination angle of the light emitting element. The power supply device is rectangular, and is arranged so that the lateral direction of the power supply device faces the direction in which the plurality of heat radiation fins are erected and the longitudinal direction of the power supply device faces the flat fin direction. ..

FIG. 1 is a perspective view showing an external example of the lighting device according to the first embodiment. FIG. 2 is a perspective view showing an external 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 the line I-I 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 showing an appearance example of an enlarged cross section of the optical lens according to the first embodiment. FIG. 11 is a diagram schematically showing an enlarged cross section of the heat radiation fin according to the second embodiment. FIG. 12 is a diagram schematically showing an enlarged cross section of the heat radiation fin according to the second 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 view illustrating the rod-shaped member according to the second embodiment.

The lighting units 100, 200, 300, and 400 according to the embodiments described below are installed on a substrate 120 having a mounting surface 120a on which the light emitting element 122 is mounted and a mounting surface 120a of the substrate 120, and emit light by the light emitting element 122. The reflector 140 that adjusts the reflection direction of the light to be reflected, 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 at a predetermined distance from each other. It is provided with positioning portions (spacers 150a to 150d) to be used.

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

Further, in the lighting units 100, 200, 300 and 400 according to the embodiment, the reflector 140 is formed integrally with the positioning portion.

Further, the lighting units 100, 200, 300 and 400 according to the embodiment have a first surface 111a on which the back surface of the mounting surface 120a on the substrate 120 is installed, and support the substrate 120 installed on the first surface 111a. A support member (fin base portion 111) and a plurality of planar heat-dissipating fins 112 having one end embedded in a second surface 111b on the back surface of the first surface 111a and erected substantially parallel to each other at intervals. Further equipped.

Further, the lighting device 1 according to the embodiment includes lighting units 100, 200, 300 and 400, and a plurality of lighting units in a state where the heat radiation fins included in the plurality of lighting units 100, 200, 300 and 400 do not come into contact with each other. It further comprises fixed frames 10 and 20 for fixing 100, 200, 300 and 400.

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

(First Embodiment)
[Example of appearance of lighting device]
1 and 2 are perspective views showing an external example of the lighting device 1 according to the first embodiment. FIG. 1 shows an example in which the illuminating device 1 is viewed from an obliquely upward direction, and FIG. 2 shows an example in which the illuminating device 1 is viewed from an obliquely downward direction.

The lighting device 1 shown in FIGS. 1 and 2 is shown in FIGS. 1 and 2 by, for example, being installed on a high ceiling in a building such as a gymnasium and causing a light emitting element such as an LED mounted inside to emit light. Illuminates a wide area 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, 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 FIGS. 1 and 2 will be described in more detail. Since the lighting units 100, 200, 300, and 400 each have the same structure, the lighting unit 100 will be mainly described below. Further, since the fixed frames 10 and 20 have the same structure, respectively, the fixed frame 10 will be mainly described below.

As shown in FIG. 2, the lighting unit 100 includes a housing case 190. The housing case 190 houses, for example, a transparent bottom cover 180 made of a metal having high thermal conductivity, 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 erected above the housing case 190. The heat radiating fin 112 releases the heat generated from the light emitting element housed inside the housing case 190 to the outside. In each of the drawings described below, some of the heat radiating fins may be designated by reference numerals 112, but the planar member erected above the housing case 190 corresponds to the heat 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. Further, the fixed frame 10 and the fixed frame 20 are fixed to each other via spacers 31 to 33. The fixing mechanism of the fixing frames 10 and 20 will be described later.

Further, as shown in FIG. 1, a mounting member 14, a terminal block 41, and power supply devices 42a and 42b are installed in the fixed frame 10. The mounting member 14 is made of metal, for example, and is mounted on a ceiling or the like. The terminal block 41 relays the power supply from a commercial AC power source (not shown) to the power supply devices 42a and 42b. The power supply devices 42a and 42b supply the electric 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, in the fixed frame 20, a mounting member 24, a terminal block 51, and power supply devices 52a and 52b are installed. The lighting device 1 is installed on the ceiling, for example, by attaching the mounting members 14 and 24 to the ceiling or the like.

[Example of disassembling the 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 from an obliquely upward direction, FIG. 4 shows an example of the lighting unit 100 viewed from an obliquely downward direction, 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 like. It includes fixing screws 170a to 170d, a bottom cover 180, and a housing case 190.

The fin unit 110 is made of metal having high thermal conductivity, and has a fin base portion 111 and heat radiation fins 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 111a which is in close surface contact with the substrate 120 and the back surface of the first surface 111a, which is the heat radiation fin 112. Has a second surface 111b on which the

Further, the lower end of the fin base portion 111 is opened in a substantially rectangular shape with the first surface 111a as the 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 of the fin base portion 111 includes the first step portion 111c and the second step portion 111d so that the opening surface gradually increases in the direction from the first surface 111a toward the lower end. A two-step step is formed by.

Further, as shown in FIGS. 3 and 4, screw holes 113a and 113b in which fixing screws (not shown) are screwed when the housing case 190 or the like is fixed to the fin base portion 111 are provided on the outer wall side surface of the fin base portion 111. It is formed. Although not shown, the fin base portion 111 is also formed with screw holes similar to those of the screw holes 113a and 113b on the side surface facing 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 screwed are formed on the first surface 111a of the fin base portion 111.

The heat radiation fins 112 are erected on the second surface 111b of the fin base portion 111 substantially in parallel with each other at predetermined intervals. As described above, the heat radiation fin 112 releases the heat generated from the light emitting element 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 the back surface of the mounting surface 120a and is in close 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, some light emitting elements are designated by reference numerals 122, but the 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 come into surface contact with each other.

Further, as shown in FIGS. 3 to 5, the substrate 120 is formed with screw through holes 121a to 121d through which the fixing screws 170a to 170d each penetrate. It is assumed that the substrate 120 according to the first embodiment is configured in the SMD (Surface Mount Device) type, and a 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 COB (COB) 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 regular order such as a matrix shape, a staggered shape, or a radial shape. It may be in the form of Chip on Board).

In such a substrate 120, as shown in FIGS. 4 and 5, connectors 123a and 123b are mounted on the mounting surface 120a, and notches 124a and 124b are formed. One end of a power line (not shown) is connected to the connectors 123a and 123b. The other end of the power line is connected to the power devices 42a and 42b via the notches 124a and 124b. As a result, the substrate 120 can make the light emitting element 122 emit light by 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 hot. The performance of the light emitting element 122 may deteriorate if the temperature becomes too high. In the lighting unit 100 according to the first embodiment, the heat radiation fins 112 are erected on the second surface 111b, which is the back surface of the first surface 111a that is in close 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 transferred to the heat radiating fin 112 located on the back side of the light emitting element 122 by the fin base portion 111, so that the heat is efficiently radiated. can do.

The washers 130a to 130d are planar washers inserted between the reflector 140 and the substrate 120, and screw holes for passing through the fixing screws 170a to 170d are formed.

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 adjusting portion 142 which 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 numerals 142 are attached to some of the adjusting portions, but the holes formed in the reflector 140 facing the light emitting element 122 correspond to the adjusting portion 142.

Further, as shown in FIGS. 3 to 5, the reflector 140 is formed with screw through holes 141a to 141d through which the fixing screws 170a to 170d each penetrate. Further, the reflector 140 is formed in a shape smaller than the opening surface formed by the first stage portion 111c of the fin base portion 111 so that the reflector 140 can be mounted 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 in a state of being separated by a predetermined distance. The spacers 150a to 150d are formed with screw through holes for the fixing screws 170a to 170d to pass through.

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 so that the fixing screws 170a to 170d can penetrate through the optical lens 160. Further, the optical lens 160 according to the first embodiment is larger than the opening surface formed by the first step portion 111c so that it can be mounted on the first step portion 111c of the fin base portion 111, and is the first. It is formed in a shape smaller than the opening surface formed by the two-stage portion 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 170a to 170d are made of metal, for example, and the optical lens 160, the reflector 140, and the substrate 120 are fixed to the fin base portion 111. For example, the fixing screw 170a penetrates 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 is the first of the fin base portion 111. It is screwed into the screw hole 114a formed on the one 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 bottom cover 180 is, for example, a translucent flat plate made of polycarbonate, acrylic resin, or the like. The lower surface cover 180 is larger than the opening surface formed by the second step portion 111d and is formed by the lower end edge of the fin base portion 111 so that it can 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 to be formed. Such a lower surface cover 180 plays a role of reducing glare that makes it difficult to directly see 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 both upper and lower ends are opened in a substantially rectangular shape. The lower end opening is formed with a protruding portion 190a protruding inward from the edge of the lower end opening. Such a housing case 190 houses a fin base portion 111 in which a substrate 120, a reflector 140, and an optical lens 160 are fixedly attached, and a lower surface cover 180. Further, the housing case 190 is formed with screw through holes 191a to 191d through which a fixing screw (not shown) penetrates when the housing case 190 is fixed to the fixing frame 10.

[Disassembly example of lighting device]
Next, an example of disassembly of 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 set of lower fixing portions 10a and 10b and a set of erection portions 10c and 10d. The lower fixed portions 10a and 10b are flat members having a length in the lateral direction substantially the same as the length in the height direction of the housing case 190, and have a distance substantially the same as the length in the arrangement direction H1 of the heat radiation fins 112. It is located so that the faces of each other face each other in an open state. The erection portions 10c and 10d extend from the upper ends of the lower erection portions 10a and 10b from the length in the height direction of the heat radiation fins 112 to erection the lower erection portions 10a and 10b.

Notched portions 11a to 11d, which are partially cut out, are formed in the lower fixed portion 10a of the fixed frame 10. 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 fixing 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, for the lower fixing 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 notch 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 fixing frame 10 by screwing the 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 42a and 42b are fixedly attached to the upper surface of the fixed frame 10. Further, a fixing screw (not shown) penetrates the screw through holes 14a and 14b formed in the mounting member 14 and is screwed into the screw holes 10e and 10f formed on the upper surface of the fixing frame 10, whereby the mounting member 14 is formed. It is fixed to the fixed frame 10.

Subsequently, 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 through holes 12a and 12b facing each other are formed in the lower fixed portion 10a of the fixed frame 10. Further, in the erection portion 10c, a set of screw through holes 13a and 13b facing each other are formed in the extension portions extending upward from the lower fixing portions 10a and 10b, and the erection portion 10d is formed with 1 facing each other. A set of screw holes 13c and 13d are formed. Further, as shown in FIGS. 1 and 2, in the fixed frame 20, similarly to 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. Along with being screwed into the spacer 31, a fixing screw (not shown) penetrates the screw through hole 23a 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) 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. Along with being screwed into the spacer 33, a fixing screw (not shown) penetrates the screw through hole 22a and is screwed into the spacer 33.

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

[Example of lower surface of lighting device]
Next, an example of the 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 radiating fins 112 projects 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 radiating fins 112 is erected on the second surface 111b so as to be substantially parallel to the side 111e having a side longer than the predetermined side 111e which is the edge of the second surface 111b. Will be done. Similarly, the heat radiating fin 212 included in the lighting unit 200, the heat radiating fin 312 provided in the lighting unit 300, and the heat radiating fin 412 included in the lighting unit 400 also have the same protrusions as the heat radiating fin 112.

As described above, since the heat radiating fins 112, 212, 312 and 412 according to the first embodiment have a planar shape having a large area having protrusions, the contact area with the air in the atmosphere becomes wide, and the heat radiating effect can be obtained. 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 the heat radiation fins do not come into contact with each other. Specifically, as shown in FIG. 7, the heat radiation fins 112 and the heat radiation fins 212 do not come into contact with each other, and similarly, the heat radiation fins 312 and the heat radiation fins 412 do not come into contact with 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 fins 112 and the heat radiation fins 212 are not in contact with each other. Similarly, the fixed frame 20 is formed with notches for fixing the lighting units 300 and 400 in a state where the heat radiation fins 312 and the heat radiation fins 412 are not in contact with each other.

As described above, in the lighting device 1 according to the first embodiment, since the heat radiation fins 112, 212, 312 and 412 do not come into contact with each other, the air flow between the lighting units is not obstructed and the heat radiation effect is improved. Can be done.

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 as each other. In other words, the heat radiation fins 112 and 212 are located on extensions of each other. Similarly, in the lighting units 300 and 400, the heat radiation fins 312 and 412 are arranged at the same positions as each other. As a result, for example, the air in the atmosphere easily flows 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 risen.

[Cross section example of lighting unit]
Next, the 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 the line I-I shown in FIG. As shown in FIG. 8, the substrate 120 comes into close surface contact with the first surface 111a of the fin base portion 111. Further, in the example shown in FIG. 8, the 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 such a reflector 140, adjustment portions 142a to 142f are formed at positions facing each of the light emitting elements 122a to 122f. 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 stage portion 111c of the fin base portion 111 with the spacers 150a and 150c 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 holes 141a and 141c of the reflector 140. That is, the screw through holes 141a and the like of the reflector 140 are formed to have a diameter larger than the outer diameter of the spacer 150a from the insertion direction to the middle of the spacer 150a so that the spacer 150a can be buried.

Further, the lower surface cover 180 is sandwiched between the second stage 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 stage portion 111d, so that the lower surface cover 180 is attached to the fin base portion 111. It will be fixed.

In this way, the spacers 150a and 150c are interposed 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. As a result, 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 Since the distance between the reflector 140 and the optical lens 160 is determined by the and 150c, the optical lens 160 can diverge or focus the light in a desired state.

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

Further, in the first embodiment, an example is shown in which the spacers 150a to 150d position the reflector 140 and the optical lens 160 in a state of being separated by a predetermined distance, but 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 may be formed integrally with the optical lens 160. For example, the reflector 140 may have a convex portion corresponding to a positioning portion extending 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 extending 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 showing 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. The lens 160b is formed.

The Fresnel lens 160a refracts the light from the light emitting element 122 whose light distribution direction is adjusted by the adjusting 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 perpendicular to the fly-eye lens 160b without attenuating it. Then, the fly-eye lens 160b diffuses the light refracted by the Fresnel lens 160a without attenuating it, and irradiates it in the direction of the lower surface cover 180 (not shown).

Although not shown in FIG. 9, the optical lens 160 has a Fresnel lens 160a and a fly eye as shown in FIGS. 9 and 10 at positions facing each light emitting element 122 (adjustment unit 142). 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 room or the like can be used 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, since the optical lens 160 can illuminate the room or the like without attenuating the total amount of light emitted by the light emitting element 122 and reducing glare, the light from the light emitting element 122 can be emitted. It can be used efficiently to illuminate a room or the like.

[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 which is a support member, and the back surface of the first surface 111a is installed. A plurality of heat radiation fins 112 are erected on the second surface 111b.

As a result, according to the lighting 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 transferred to the heat radiating fin 112 located on the back side of the light emitting element 122. Since it is transmitted efficiently, heat can be dissipated efficiently.

In particular, when the light emitting element 122 such as an LED has a high output, the light emitting element 122 tends to have a high temperature. In such a situation, the mechanism in which the heat radiation fins are erected on the housing body or the reflector formed by aluminum die casting or the like may not always be able to efficiently transfer the heat generated from the light emitting element 122 to the heat radiation fins. It is necessary to make the heat dissipation fins large in order to obtain a sufficient heat dissipation effect. This leads to an increase in scale 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, even when a high output light emitting element 122 is used, the heat radiation fin 112 has a large-scale shape. As a result, the lighting unit 100 (lighting device 1) can be reduced in size and weight.

Further, when the heat radiation fins have a large shape, it is necessary to raise the heat radiation fins. In such a case, it is necessary to provide an unnecessary region such as thickening the root portion of the heat radiation fin for the punching taper. On the other hand, in the lighting unit 100 according to the first embodiment, the heat radiation fin 112 does not need to have a large-scale shape, and the heat radiation fin 112 is erected on the fin base portion 111, so that an unnecessary area for punching taper is required. There is no need to provide. For these reasons, the lighting unit 100 according to the first embodiment can realize the miniaturization and weight reduction of the lighting unit 100 (lighting device 1).

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

Further, in the lighting unit 100 according to the first embodiment, the spacers 150a to 150d, which are 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 light is positioned so as to be separated by a predetermined distance.

As a result, according to 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, and the optical lens 160 diverges or emits light in a desired state. It becomes possible to focus.

Further, in the lighting device 1 according to the first embodiment, the fixed frames 10 and 20 are in a state where the heat radiation fins included in the lighting units 100, 200, 300 and 400 are not in contact with each other, and the lighting units 100, 200, 300 And 400 are fixed. As a result, according to the lighting device 1 according to the first embodiment, the heat dissipation effect can be improved without obstructing the air flow between the lighting units.

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

[Standing position of heat dissipation fins]
In the first embodiment, an example in which the heat radiation fins 112 are erected on the second surface 111b of the fin base portion 111 has been described. Here, the heat radiating fin 112 may be erected at a position on the second surface 111b 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 radiation fin 112 according to the second embodiment.

In the example shown in FIG. 11, heat radiation fins 112a to 112m are erected on the second surface 111b of the fin base portion 111 on the back side of the light emitting elements 122a to 122m mounted on the substrate 120. In this way, in the lighting unit 100, each heat radiating fin 112 is erected at a position directly above the light emitting element 122, so that the heat generated from the light emitting element 122 is efficiently generated as shown by an arrow in FIG. It can be transmitted to each heat radiating fin 112, and as a result, the heat radiating effect can be improved.

The erection position of the radiating fin 112 shown in FIG. 11 is an example, and the radiating fin 112 may be erected at a position not facing the light emitting element 122. For example, as in the example shown in FIG. 11, heat radiation fins 112x and 112y may be erected at positions not facing the light emitting element 122. Further, for example, in the example shown in FIG. 11, heat radiation fins (not shown) may be erected between the heat radiation fins 112a and the heat radiation fins 112b.

[Erecting mechanism of heat dissipation fins]
Next, the erection mechanism of the heat radiation fin 112 will be described. FIG. 12 is a diagram schematically showing an enlarged cross section of the heat radiation 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 111b of the fin base portion 111. Such a heat radiating fin 112 is embedded in the fin base portion 111 by being driven into the fin base portion 111 in a state of being crimped to the second surface 111b by being driven by a caulking rod or the like in the direction of the arrow shown in FIG. The arrow. Specifically, the fin base portion 111 is in a state of being raised from the second surface 111b as in the example shown in FIG. 12 by moving the region driven by the striking rod or the like to another region. One end of the portion 111 is embedded.

By embedding one end of the heat radiation fin 112 in the fin base portion 111 in this way, the contact area between the heat radiation fin 112 and the fin base portion 111 is increased. 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 heat radiating fin 112, so that the heat radiating effect can be improved.

[Optical lens arrangement pattern]
Further, in the first embodiment, various modes can be considered for the arrangement pattern of the optical lens 160 shown in FIGS. 9 and 10. 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 FIG. 13 shows only the light emitting element 122 and the optical lens 160, and shows a view seen from above (the direction from the light emitting element 122 toward the optical lens 160).

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, the present invention is not limited to this example, and the 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. Further, when the substrate 120 or the like is formed in a circular shape in the first place, the light emitting elements 122 are mounted in a grid pattern on the circular substrate 120 as in the example shown in <Arrangement Example 3> of FIG. In some cases. In such a case, the 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 3> of FIG.

[Reinforcing rod for heat dissipation fins]
Further, since the heat radiating fin 112 described in the first embodiment has a planar shape, it can be said that it is easily deformed by bending or the like. Therefore, the lighting unit 100 may include a rod-shaped member that penetrates 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 115a to 115d are formed of a metal having high thermal conductivity or the like, and penetrate the surfaces of a plurality of heat radiating fins 112 erected on the fin base portion 111. As a result, 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. Further, in the example shown in FIG. 14, the rod-shaped members 115a to 115d can prevent the rod-shaped members 115a to 115d from obstructing the air flow by penetrating the peripheral edges (four corners) of the surfaces of the plurality of heat radiation fins 112.

Further, in the example shown in FIG. 15, the communicating 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. As a result, since the communication rod-shaped members 116a to 116f integrally reinforce a plurality of heat radiation fins across different lighting units, the plurality of heat radiation fins can be made less likely to be deformed.

Although FIGS. 14 and 15 show an example in which the heat radiating fins 112 and 312 do not have protrusions 112P protruding outward from the edges of both ends of the second surface 111b, the heat radiating fins 112 and 312 protrude. It may have a part 112P.

[Other Embodiments]
Further, in the above embodiment, the example of being installed on a high ceiling has been described, but the lighting device 1 can also be applied to a direct-mounted lighting fixture or the like other than the type installed on a high ceiling.

Further, in the above embodiment, an example in which each member is fixed by a 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, raw material and material of each member according to the above embodiment are not limited to the embodiment and those shown in the drawing. For example, the fin unit 110, the substrate 120, the reflector 140, the optical lens 160, the bottom 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 gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention as well as the invention described in the claims and the equivalent scope thereof.

1 Lighting device 100 Lighting unit 110 Fin unit 111 Fin base 111a 1st surface 111b 2nd surface 112 Heat dissipation fin 120 Board 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)

With multiple planar radiating fins that are erected at intervals from each other;
A substrate on which a light emitting element is mounted is arranged on the first surface, the heat radiation fins are arranged on the second surface, and a support member having an outer wall side surface from the first surface to the second surface;
With a rectangular power supply located above the plurality of heat radiation fins;
With a fixed frame having a plurality of erection portions extending perpendicularly to the support member, and a fixing portion below the erection portion being fixed to the outer wall side surface of the support member;
With a mounting member that is mounted on the fixed frame, used for the installation of its own device, and rotatable so as to change the illumination angle of the light emitting element;
Have,
The power supply device is characterized in that the lateral direction of the power supply device is directed to the direction in which the plurality of heat radiation fins are erected, and the longitudinal direction of the power supply device is directed to the flat fin direction. Lighting equipment.

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