JP2016219377A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire which enables improvement of heat radiation performance of the luminaire.SOLUTION: A luminaire 100 includes: a base member 10; a light source module 40; and a power supply part 20. The base member 10 has a first major surface 1 and a second major surface 2. The light source module 40 is disposed on the first major surface 1 of the base member 10. The power supply part 20 supplies electric power to the light source module 40. The base member 10 has a power supply storage part 25, a base part 17, and at least one fin 11, 12, 13. The power supply storage part 25 stores the power supply part 20. In the base part 17, the light source module 40 is installed on the first major surface 1. The at least one fin 11, 12, 13 is provided on the second major surface 2 so as to be erected from the base part 17. The at least one fin 11, 12, 13 is provided so as not to overlap with a region 40R where the light source module 40 is installed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lighting fixture.

  Conventionally, it is known that a radiating fin is provided on the back surface of a circuit board on which a light source is mounted in a lighting fixture (for example, Patent Document 1). The LED illumination unit described in Patent Document 1 has a packing sandwiched between the circuit board and the light-transmitting member when the light-transmitting member is attached to the surface of the circuit board having the heat radiation fins attached to the back surface. In the LED lighting unit described in Patent Document 1, the circuit board is pressed against the heat radiating member by the repelling force of the packing to bring them into close contact with each other, reducing the thermal resistance between the circuit board and the heat radiating member, and generated from the LED chip. It is possible to efficiently dissipate the heat that passes through the heat dissipation member.

JP 2012-48969 A

  When the heat radiating member is molded, the portion where the heat radiating fins are formed is likely to be dented on the back surface due to molding shrinkage. In the LED illumination unit described in Patent Document 1, heat radiation fins are formed in a region where a circuit board on which a light source is mounted is installed. Accordingly, a gap is generated in the contact surface between the circuit board and the heat dissipation member, the adhesion between the circuit board and the heat dissipation member is lowered, and the heat dissipation of the LED lighting unit cannot be sufficiently improved.

  This invention is made | formed in view of the said subject, The objective is to provide the lighting fixture which can improve the heat dissipation of a lighting fixture.

  The lighting fixture disclosed in the present invention includes a base member, a light source module, and a power supply unit. The base member has a first main surface and a second main surface. The light source module is disposed on the first main surface of the base member. The power supply unit supplies power to the light source module. The base member includes a power storage unit, a base unit, and at least one fin. The power storage unit stores the power supply unit. The base portion is provided with the light source module on the first main surface. The at least one fin is provided on the second main surface so as to stand up from the base portion. The at least one fin is provided so as not to overlap an area where the light source module is installed.

  In the lighting fixture disclosed in the present application, it is preferable that the base member further includes at least one notch. It is preferable that the at least one notch is provided between the at least one fin and the power storage unit.

  In the lighting fixture disclosed in the present application, the light source module preferably includes a plurality of light sources. The plurality of light sources are preferably arranged in a line.

  In the lighting fixture disclosed in the present application, it is preferable that an end portion of the light source module overlaps with the power storage unit.

  In the lighting fixture disclosed in the present application, it is preferable that the fin includes a first fin, a second fin, and a third fin. The first fin and the second fin are preferably opposed to each other. The third fin preferably connects the first fin and the second fin.

  In the lighting fixture disclosed in the present application, it is preferable that the base member is integrally molded.

  ADVANTAGE OF THE INVENTION According to this invention, the heat dissipation of a lighting fixture can be improved.

It is a perspective view of the lighting fixture which concerns on embodiment of this invention. (A) is the perspective view seen from the upper direction of the lighting fixture which concerns on embodiment of this invention. (B) is the perspective view seen from the downward direction of the lighting fixture which concerns on embodiment of this invention. It is a top view of the lighting fixture which concerns on embodiment of this invention. It is a bottom view of the lighting fixture which concerns on embodiment of this invention. It is sectional drawing along the VV line of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof is not repeated.

  With reference to FIG. 1, the lighting fixture 100 which concerns on embodiment of this invention is demonstrated. FIG. 1 is a perspective view of a lighting fixture 100 according to an embodiment of the present invention.

  The lighting fixture 100 is a crime prevention light, for example. The luminaire 100 is attached to the column P via the belt B. The support P is, for example, a utility pole. The luminaire 100 is installed on a road such as a sidewalk or a roadway, and illuminates a road below the luminaire 100. The lighting fixture 100 is attached to the support | pillar P installed with the attitude | position along a perpendicular direction with the attitude | position inclined a little. Specifically, the luminaire 100 is attached in a posture capable of irradiating not only the irradiation surface directly below but also the irradiation surface obliquely below.

  With reference to FIG. 2, the lighting fixture 100 which concerns on embodiment of this invention is demonstrated. Fig.2 (a) is the perspective view seen from the upper direction of the lighting fixture 100 which concerns on embodiment of this invention. FIG.2 (b) is the perspective view seen from the downward direction of the lighting fixture 100 which concerns on embodiment of this invention. The X axis is along the longitudinal direction of the luminaire 100, the Y axis is along the short side of the luminaire 100, the Z axis is along the vertical direction, and the X, Y, and Z axes are Orthogonal.

  The lighting fixture 100 includes a base member 10, a light source module 40, a power supply unit 20, a bottom plate 27, a cover member 50, and a light detection unit 60. The base member 10 is made of aluminum, for example. The base member 10 is integrally molded using a mold. Note that the material of the base member 10 is not limited to aluminum, and may be any material having good thermal conductivity.

  The base member 10 has a first main surface 1 and a second main surface 2. In the present embodiment, the first main surface 1 faces downward and the second main surface 2 faces upward. In the present embodiment, the direction in which the luminaire 100 emits light is described as “down” while the luminaire 100 is attached to the support column P, and the direction opposite to the direction in which the luminaire 100 emits light is referred to as “upper”. Describe. The first main surface 1 has a region 40R where the light source module 40 is installed and a region 80R where the light source module 40 is not installed. The base member 10 extends in the longitudinal direction.

  The light source module 40 includes a substrate 41 and a plurality of light sources 42. In the present embodiment, the light source module 40 has five light sources 42. The light source module 40 is disposed on the first main surface 1 of the base member 10. The plurality of light sources 42 are arranged, for example, in a line. The light source 42 is, for example, an LED (Light Emitting Diode) chip.

  The power supply unit 20 supplies power to the light source module 40. Details of the power supply unit 20 will be described later with reference to FIG.

  The bottom plate 27 is attached to the power storage unit 25 so as to cover the lower side of the power storage unit 25. The substrate 21 of the power supply unit 20 is provided at a distance from the bottom plate 27.

  The cover member 50 is attached to the base member 10 so as to cover the first main surface 1 of the base member 10. The cover member 50 has translucency. The cover member 50 has a plurality of lenses 51. In the present embodiment, the cover member 50 has five lenses 51. Each of the five lenses 51 covers the five light sources 42. The light emitted from the light source 42 enters the incident surface of the lens 51 and is emitted from the emission surface of the lens 51.

  The light detection unit 60 detects the brightness around the lighting fixture 100. The luminaire 100 is turned on or off based on the detection result of the light detection unit 60. Details of the light detection unit 60 will be described later with reference to FIG. Note that the light detection unit 60 is not essential.

  The base member 10 includes a power storage unit 25, a base unit 17, a first fin 11, a second fin 12, a third fin 13, a mounting unit 31, and a mounting unit 32. The power storage unit 25 stores the power supply unit 20. In the base portion 17, the light source module 40 is installed on the first main surface 1. The attachment portion 31 and the attachment portion 32 are used for attaching the lighting fixture 100 to the support column P. The attachment portion 31 has a through hole 31a. The attachment portion 32 has a through hole 32a. The lighting fixture 100 is attached to the support P through the belt B through the through hole 31a and the through hole 32a.

  The first fin 11, the second fin 12, and the third fin 13 radiate heat generated from the light source 42. The first fin 11, the second fin 12, and the third fin 13 are provided so as to stand up from the base portion 17 on the second main surface 2. In the present embodiment, the first fin 11, the second fin 12, and the third fin 13 are provided so as to stand in the vertical direction. The side surfaces of the first fin 11 and the second fin 12 are opposed to each other. The first fin 11 and the second fin 12 are connected to the third fin 13. The first fins 11 and the second fins 12 are provided along the arrangement direction (X-axis direction) of the light sources 42. In the present embodiment, the first fin 11 and the second fin 12 are provided substantially parallel to the arrangement direction of the light sources 42.

  Further, the height of the rear end portion 11 b of the first fin 11 is substantially equal to the height of the end portion 28 of the power storage unit 25. Similarly, the height of the rear end portion 12b of the second fin 12 and the height of the end portion 28 of the power storage unit 25 are substantially equal. The height of the front end portion 11a of the first fin 11 is the lowest, and the height of the rear end portion 11b of the first fin 11 is the highest. From the rear end portion 11b of the first fin 11 to the tip end portion 11a of the first fin 11, the height of the first fin 11 gradually decreases. Similarly, the height of the front end portion 12a of the second fin 12 is the lowest, and the height of the rear end portion 12b of the second fin 12 is the highest. From the rear end portion 12b of the second fin 12 to the front end portion 12a of the second fin 12, the height of the second fin 12 gradually decreases. Therefore, the external appearance of the lighting fixture 100 has a streamlined shape and is excellent in design.

  The base member 10 preferably has a notch 15 and a notch 16. The notch 15 is provided between the first fin 11 and the power storage unit 25. The notch 16 is provided between the second fin 12 and the power storage unit 25. Since the lighting fixture 100 is installed such that the tip (the end on the side where the third fins 13 are provided) faces obliquely upward, and the base member 10 is installed in a posture inclined with respect to the X-axis direction, When it rains, rainwater flows from the notch 15 and the notch 16. As a result, it is possible to prevent rainwater from collecting on the second main surface 2. Furthermore, by having the notch 15 and the notch 16, the surface area of the first fin 11, the surface area of the second fin 12, and the surface area of the power storage unit 25 are increased, and heat dissipation of the light source module 40 and the power supply unit 20 is performed. Can be improved. Further, air can easily flow through the notch 15 and the notch 16, and the heat dissipation of the light source module 40 and the power source 20 can be improved.

  The base member 10 preferably has a protrusion 14 on the base portion 17. The protruding portion 14 protrudes from the base portion 17. The protrusion 14 is provided at a position closer to the light source 42 than the first fin 11, the second fin 12, and the third fin 13. The height of the protrusion 14 is lower than the height of the first fin 11, the height of the second fin 12, and the height of the third fin 13. In addition, since the projection part 14 is low in height, there is a low possibility that a dent (sink) will occur on the back side (first main surface 1 side) of the projection part 14 during molding of the mold. In addition to the first fin 11, the second fin 12, and the third fin 13, the luminaire 100 can also radiate heat at the protrusion 14, and the heat dissipation of the light source module 40 can be improved.

  With reference to FIG.3, FIG4 and FIG.5, the lighting fixture 100 which concerns on embodiment of this invention is further demonstrated. FIG. 3 is a top view of the luminaire 100 according to the embodiment of the present invention. FIG. 4 is a bottom view of the lighting fixture 100 according to the embodiment of the present invention. FIG. 5 is a cross-sectional view taken along line VV in FIG.

  As shown in FIG. 5, the power supply unit 20 includes a substrate 21, a connector 22, and a connector 23. A connector 22 and a connector 23 are attached to the substrate 21. A power line from an external power source is inserted into the connector 23 through the power insertion hole 71 formed in the power storage unit 25 and is electrically connected to the connector 23. Further, the connector 22 is electrically connected to the light source module 40 via an electric wire.

  As shown in FIG. 5, the light detection unit 60 includes a light detection window 61 and a light detection sensor 62. The light detection sensor 62 is attached to the substrate 21. The light detection sensor 62 detects the illuminance of light entering from the light detection window 61 and compares it with a reference value. When the illuminance of light detected by the light detection sensor 62 is higher than a reference value (for example, during the daytime), the lighting apparatus 100 is not turned on. When the illuminance of light detected by the light detection sensor 62 is lower than a reference value (for example, at night), the lighting fixture 100 is turned on.

  The first fin 11, the second fin 12, and the third fin 13 radiate heat generated from the light source 42. In general, when a member is molded by mold molding, a recess (so-called sink) may occur due to molding shrinkage on the back side of the thick portion. As shown in FIG. 3, in the lighting fixture 100, the first fin 11, the second fin 12, and the third fin 13 are not overlapped with the region 40 </ b> R where the light source module 40 is installed in plan view. Is provided. In the vicinity of the light source 42 where the temperature increases, the first fin 11, the second fin 12, and the third fin 13 are provided so as not to overlap with the region 40 </ b> R where the light source module 40 is installed. That is, the light source module 40 is not disposed on the back side of the first fin 11, the back side of the second fin 12, and the back side of the third fin 13, which may cause a dent. As a result, the adhesion between the base member 10 and the light source module 40 can be ensured, and the heat dissipation of the light source module 40 can be improved.

  The first fin 11, the second fin 12, and the third fin 13 are erected from the base portion 17. Accordingly, since the fins are provided on the base portion 17 having a relatively small thickness, the luminaire 100 can be made compact as compared with the case where the fins are provided in the power storage portion having a relatively large thickness.

  It is preferable that the end 43 of the light source module 40 overlaps the power storage unit 25. Therefore, the heat generated in the light source module 40 can be radiated also in the power storage unit 25 in addition to the first fin 11, the second fin 12, and the third fin 13, and the heat dissipation of the light source module 40 is improved. be able to.

  As shown in FIG. 5, the height d2 of the rear end portion 11b of the first fin 11 and the height d3 of the end portion 28 of the power storage unit 25 are substantially equal. Similarly, the height d2 of the rear end portion 12b of the second fin 12 and the height d3 of the end portion 28 of the power storage unit 25 are substantially equal. The height d1 of the front end portion 11a of the first fin 11 is the lowest, and the height d2 of the rear end portion 11b of the first fin 11 is the highest. From the rear end portion 11b of the first fin 11 to the tip end portion 11a of the first fin 11, the height of the first fin 11 gradually decreases. Similarly, the height d1 of the front end portion 12a of the second fin 12 is the lowest, and the height d2 of the rear end portion 12b of the second fin 12 is the highest. From the rear end portion 12b of the second fin 12 to the front end portion 12a of the second fin 12, the height of the second fin 12 gradually decreases. Therefore, the external appearance of the lighting fixture 100 has a streamlined shape and is excellent in design.

  As described above with reference to FIGS. 1 to 5, in the luminaire 100, at least one fin (the first fin 11, the second fin 12, and the third fin 13) is the light source module 40 in plan view. It is provided so as not to overlap with the area 40R where is installed. In other words, the light source module 40 is not disposed on the back side of the fin that may cause a dent. As a result, the adhesion between the base member 10 and the light source module 40 can be ensured, and the heat dissipation of the light source module 40 can be improved.

  In addition, as described with reference to FIGS. 1 to 5, the luminaire 100 has at least one provided between at least one fin (the first fin 11 and the second fin 12) and the power storage unit 25. It further has two notches (notch 15 and notch 16). Since rainwater flows down from the notch 15 and the notch 16, it is possible to prevent the rainwater from collecting on the second main surface 2. Furthermore, the surface area of the first fin 11 and the surface area of the second fin 12 are increased, and the heat dissipation of the light source module 40 can be improved. Furthermore, air becomes easy to circulate, and the heat dissipation of the light source module 40 and the power supply unit 20 can be improved.

  In addition, as described with reference to FIGS. 1 to 5, in the lighting fixture 100, the light sources 42 are arranged in a line. Therefore, the range that can be irradiated by the lighting apparatus 100 can be expanded.

  In addition, as described with reference to FIGS. 1 to 5, in the lighting fixture 100, the end 43 of the light source module 40 overlaps the power storage unit 25. Therefore, in addition to the 1st fin 11 and the 2nd fin 12, the heat generated in light source module 40 can be radiated also in power supply accommodating part 25, and the heat dissipation of light source module 40 can be improved.

  In addition, as described with reference to FIGS. 1 to 5, in the lighting fixture 100, the base member 10 includes the third fins 13 that connect the first fins 11 and the second fins 12. Therefore, in addition to the 1st fin 11 and the 2nd fin 12, heat can be radiated also in the 3rd fin 13, and the heat dissipation of light source module 40 can be improved.

  In addition, as described with reference to FIGS. 1 to 5, in the lighting fixture 100, the end 43 of the light source module 40 overlaps the power storage unit 25. Therefore, the heat generated in the light source module 40 can be radiated also in the power storage unit 25 in addition to the first fin 11, the second fin 12, and the third fin 13, and the heat dissipation of the light source module 40 is improved. be able to.

  In addition, as described with reference to FIGS. 1 to 5, in the lighting fixture 100, the base member 10 has the protruding portion 14 on the base portion 17. Therefore, the luminaire 100 can radiate heat at the protrusion 14 in addition to the first fin 11, the second fin 12, and the third fin 13, and can improve the heat dissipation of the light source module 40.

  Moreover, as demonstrated with reference to FIGS. 1-5, in the lighting fixture 100, the base member 10 is integrally molded. Therefore, heat generated by the light source module 40 is easily transmitted to the first fin 11, the second fin 12, and the third fin 13. Therefore, the heat dissipation of the light source module 40 can be improved.

  The embodiment of the present invention has been described above with reference to the drawings (FIGS. 1 to 5). However, the present invention is not limited to the above-described embodiment, and can be implemented in various modes without departing from the gist (for example, (1) to (6) shown below). In order to facilitate understanding, the drawings schematically show each component as a main component, and the thickness, length, number, and the like of each component shown in the drawings are different from the actual for convenience of drawing. . In addition, the material, shape, dimensions, and the like of each component shown in the above embodiment are merely examples, and are not particularly limited, and various changes can be made without departing from the effects of the present invention. is there.

  (1) As described with reference to FIGS. 1 to 5, in this embodiment, the lighting apparatus 100 is a security light, but is not limited thereto. For example, a hanging light such as a pendant light, a ceiling direct light such as a ceiling light, an embedded light such as a downlight, or a wall direct light such as a bracket light may be used.

  (2) As described with reference to FIGS. 1 to 5, in the present embodiment, the base member 10 has three fins, but is not limited thereto. For example, the base member 10 may include one, two, or four or more fins.

  (3) As described with reference to FIGS. 1 to 5, in the present embodiment, the base member 10 has the protruding portion 14 on the base portion 17, but is not limited thereto. For example, the base member 10 may be flat without having the protrusions 14 on the base portion 17.

  (4) As described with reference to FIGS. 1 to 5, in the present embodiment, the base member 10 is integrally molded, but is not limited thereto. For example, after the base 17, the first fin 11, the second fin 12, and the third fin 13 are molded in a separate process, the first fin 11, the second fin 12, and the third fin 13 may be attached to the base portion 17.

  (5) As described with reference to FIGS. 1 to 5, in this embodiment, the lighting fixture 100 includes the light detection unit 60, but is not limited thereto. For example, the luminaire 100 may not include the light detection unit 60. In this case, the lighting apparatus 100 may be controlled to light up from the set time to the set time by measuring the time with a timer.

  (6) As described with reference to FIGS. 1 to 5, in the present embodiment, the notch 15 is provided between the first fin 11 and the power storage unit 25, and the notch 16 is the second fin 12. However, the present invention is not limited to this. For example, the notch may be provided in the fin. A plurality of notches may be provided in one fin.

DESCRIPTION OF SYMBOLS 1 1st main surface 2 2nd main surface 10 Base member 11 1st fin 12 2nd fin 13 3rd fins 15 and 16 Notch part 17 Base part 20 Power supply part 25 Power supply accommodating part 31, 32 Mounting part 40 Light source module 40R area | region 42 light source 50 cover member 100 lighting fixture

Claims (6)

A base member having a first main surface and a second main surface;
A light source module disposed on the first main surface of the base member;
A power supply unit for supplying power to the light source module,
The base member is
A power storage section for storing the power supply section;
A base portion on which the light source module is installed in the first main surface;
In the second main surface, having at least one fin provided to stand up from the base portion,
The at least one fin is provided so as not to overlap an area where the light source module is installed.   The lighting device according to claim 1, wherein the base member further includes at least one notch portion provided between the at least one fin and the power storage unit. The light source module has a plurality of light sources,
The lighting fixture according to claim 1 or 2, wherein the plurality of light sources are arranged in a line.   The lighting device according to any one of claims 1 to 3, wherein an end portion of the light source module overlaps with the power storage unit. The fin includes a first fin, a second fin, and a third fin,
The first fin and the second fin are opposed to each other,
The lighting apparatus according to any one of claims 1 to 4, wherein the third fin connects the first fin and the second fin.   The lighting device according to claim 1, wherein the base member is integrally molded.

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