JPWO2015087626A1 - lighting equipment - Google Patents

Abstract

An object of the present invention is to provide a lighting apparatus that can prevent dust, oil mist, and the like from accumulating on a radiator even in an environment with a lot of dust and oil mist. The lighting fixture of the present invention includes an illumination unit (20) and a heat dissipation unit (10), and the illumination unit (20) includes an irradiation side on which light is irradiated and a back side opposite to the irradiation side, The heat radiating section (10) includes a plate-like main body member (1) and a plate-like roof member (2) arranged on one end side of the plate-like main body member (1) in a state substantially perpendicular to the plate-like main body member (1). The other end side opposite to the one end side of the plate-like main body member (1) is positioned on the back side of the illumination part (20), and the plate-like roof member (2) The illuminating unit (20) is arranged in the illuminating unit (20) so as to cover a part or all of the back side of the illuminating unit (20).

Description

  The present invention relates to a lighting fixture.

  In illumination such as an LED (Light Emitting Diode), illumination efficiency decreases due to heat generation during lighting. Therefore, it is necessary to dissipate the heat. Usually, a lighting fixture including a light emitting element such as an LED includes a radiator as described in Patent Document 1.

Japanese Patent Laid-Open No. 8-11609

  However, in an environment such as a factory where there is a lot of dust and oil mist and the like, dust and oil mist and the like are likely to accumulate on the radiator, so that the function of the radiator (heat dissipation) may be impaired. In particular, when oil mist is combined with dust, the heat radiator impairs heat dissipation. As a result, the illumination efficiency of a lighting fixture including a light emitting element such as an LED is reduced.

  Therefore, an object of the present invention is to provide a lighting apparatus that can prevent dust, oil mist, and the like from accumulating on a radiator even in an environment where there is a lot of dust and oil mist.

In order to achieve the above object, the lighting apparatus of the present invention comprises:
Including an illumination part and a heat dissipation part,
The illumination unit includes an irradiation side irradiated with light and a back side opposite to the irradiation side,
The heat dissipating part includes a plate-like main body member, and a plate-like roof member arranged on one end side of the plate-like main body member in a state substantially perpendicular to the plate-like main body member,
The heat radiating part has the other end opposite to the one end side of the plate-like main body member positioned on the back side of the lighting part, and the plate-like roof member is part or all of the back side of the lighting part. It is arrange | positioned in the said illumination part in the state which covers.

  According to the present invention, it is possible to provide a lighting device that can prevent dust, oil mist, and the like from accumulating on a radiator even in an environment where there is a lot of dust and oil mist.

FIG. 1A is a perspective view illustrating an example of a lighting fixture of Embodiment 1, and FIG. 1B is a left side view of FIG. 2A to 2C are explanatory diagrams illustrating an example of a method for forming a heat dissipation unit according to the first embodiment. FIGS. 3A to 3B are perspective views illustrating another example of the heat dissipating unit of the lighting fixture of the first embodiment. FIG. 4 is a perspective view showing another example of the heat radiating part of the lighting fixture of the first embodiment. FIG. 5 is a perspective view illustrating an example of a lighting fixture according to the second embodiment. FIG. 6 is a perspective view illustrating an example of a lighting fixture according to the third embodiment. FIG. 7 is a perspective view illustrating an example of a lighting fixture according to the fourth embodiment. FIG. 8A is a perspective view illustrating an example of a usage state of the lighting fixture of Embodiment 4, and FIG. 8B is a left side view of FIG. FIG. 9 is a perspective view illustrating an example of a lighting fixture according to the fifth embodiment. FIG. 10 is a perspective view illustrating another example of the lighting fixture of the fifth embodiment. FIG. 11 is a perspective view illustrating an example of a lighting fixture according to the sixth embodiment. FIGS. 12A and 12B are explanatory diagrams illustrating an example of a method for forming a heat dissipation unit according to the sixth embodiment.

  Hereinafter, the lighting fixture of this invention is demonstrated in detail with reference to drawings. However, the present invention is not limited to the following description. In addition, in the following FIGS. 1-12, the same code | symbol is attached | subjected to the same part and the description may be abbreviate | omitted. In the drawings, for convenience of explanation, the structure of each part may be simplified as appropriate, and the dimensional ratio of each part may be schematically shown, unlike the actual case.

[Embodiment 1]
1A and 1B are diagrams showing an example of a lighting fixture according to the present invention, where FIG. 1A is a perspective view and FIG. 1B is a left side view of FIG. 1A.

  As shown to FIG. 1 (A) and (B), the lighting fixture 100 of this embodiment contains the illumination part 20 and the thermal radiation part 10. As shown in FIG. The illumination unit 20 includes an irradiation side 20B irradiated with light and a back side 20A opposite to the irradiation side 20B. The illumination unit 20 includes a light emitting element (not shown) therein. In FIG. 1, the shape of the illumination unit 20 is simplified and shown as a substantially rectangular parallelepiped shape, and the shape is not particularly limited. The heat radiating unit 10 is located on the back side 20 </ b> A of the lighting unit 20. The heat radiating portion 10 includes a plate-like main body member 1, a plate-like roof member 2, and a substrate member 3. The plate-like roof member 2 is arranged on the upper end side of the plate-like main body member 1 in a state substantially perpendicular to the plate-like main body member 1, and the substrate member 3 is arranged on the lower end side of the plate-like main body member 1. 1 is arranged in a substantially perpendicular state. The heat radiating part 10 is fixed to the back side 20 </ b> A of the illumination part 20 by the substrate member 3. In the lighting device 100 according to the present embodiment, the plate-like roof member 2 is disposed on the lighting unit 20 in a state of covering a part of the back side 20A of the lighting unit 20, and thus a plate-like shape that is a heat radiation surface of the heat radiation unit 10. It is possible to prevent dust, oil mist, and the like from entering on one side surface of the main body member 1 and depositing. As a result, the lighting fixture 100 of the present embodiment has long-term stable heat dissipation.

  As shown to FIG. 1 (A) and (B), in this embodiment, the plate-shaped roof member 2 is inclined and arrange | positioned with respect to the horizontal direction. However, the lighting fixture of this embodiment is not limited to this, For example, you may arrange | position the plate-shaped roof member 2 in a horizontal direction like the lighting fixture of Embodiment 4 mentioned later. Even in this case, it is possible to prevent dust, oil mist, and the like from being easily deposited on one side surface of the plate-like main body member 1 that is the heat radiating surface of the heat radiating portion 10. Stable heat dissipation.

  The inclination angle of the plate-like roof member 2 with respect to the horizontal direction is not particularly limited, and may be, for example, 0 ° or more, but is preferably 3 ° or more. If the inclination angle is 3 ° or more, for example, oil mist or the like attached to the plate-like roof member 2 flows in the environment of a factory or the like, can travel along the plate-like roof member 2, and can be dropped downward. However, if the inclination angle is set to be large, it is necessary to set the height of the heat dissipating unit 10 high, which causes a problem that the lighting fixture becomes heavy. Therefore, from the viewpoint of the problem, the inclination angle is more preferably 45 ° or less.

  The plate-like main body member 1, the plate-like roof member 2, and the substrate member 3 of the heat radiation part 10 of the present embodiment shown in FIG. 1A may be formed from a single member, and using fixing means such as screws. Although it may be formed by combining different members, it is preferably formed from an integral member. In the case of being formed from the integral member, for example, as shown in FIGS. 2A and 2B, first, the upper end 16 of the plate-like member 6 is substantially perpendicular to the lower end 26 at the position of the dotted line X. The plate-like main body member 1 and the plate-like roof member 2 are manufactured as shown in FIG. Here, as shown in FIGS. 2A and 2B, the dotted line X is inclined with respect to the lower end 26 of the plate-like member 6. Therefore, as shown in FIG. 2 (B), the upper end 11 and the lower end 12 of the plate-like roof member 2 are non-parallel. Therefore, in order to make the upper end 11 substantially parallel to the lower end 12, the plate-like roof member 2 is cut off to the dotted line Z shown in FIG. Thereby, as shown in FIG.2 (C), the plate-shaped main body member 1 and the plate-shaped roof member 2 of this embodiment shown in FIG. 1 (A) are manufactured. Further, as shown in FIG. 2A, the substrate member 3 is manufactured by bending the lower end 26 with respect to the upper end 16 in the direction of an arrow at a position of a dotted line Y in a substantially vertical direction. Thus, when forming from an integral member, since the process which arrange | positions the plate-shaped roof member 2 which is another member in the plate-shaped main body member 1 can be skipped, a effort and cost can be reduced. Further, a problem arises in that a heat conductive resistance surface is generated on the heat radiating surface of the heat radiating portion 10 (side surface of the plate-shaped main body member 1) with the step of arranging the plate-shaped roof member 2 which is a separate member on the plate-shaped main body member 1. The point can be avoided. Further, as another method of forming from an integral member, the heat radiating portion 10 may be formed by a method by extrusion molding described later in Embodiment 6.

  Examples of the material for forming the heat radiation part 10 (the plate-like main body member 1, the plate-like roof member 2, and the substrate member 3) include aluminum and its alloys, magnesium and its alloys, iron and its alloys, copper and its alloys, and titanium. And alloys thereof. In the heat dissipating part 10, if magnesium and its alloy are used, it is possible to further reduce the weight, if iron and its alloy are used, the manufacturing cost can be further reduced, and if copper and its alloy are used, the heat dissipation characteristic is further improved. It becomes possible to improve, and if titanium and its alloy are used, the strength can be further improved. Moreover, the forming material of the heat radiating part 10 (the plate-like main body member 1, the plate-like roof member 2, and the substrate member 3) may be, for example, a resin containing a heat conductive filler. Examples of the resin include polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polycarbonate (PC), polyamide (PA), polyphenylene sulfide (PPS), polymethyl methacrylate (PMMA), and the like.

  As said light emitting element, LED (Light Emitting Diode), organic EL (Electro Luminescence) etc. are mentioned, for example, It is preferable that it is LED. LED is not specifically limited, A well-known thing can be used.

  The lighting apparatus 100 of this embodiment can be suitably used in an environment with a lot of dust, oil mist, and the like, such as a factory, a warehouse, a store, and the like. However, the lighting fixture 100 of this embodiment is not limited to this, It can be used for a wide use in a wide field | area.

  The heat radiating part 10 of the lighting fixture 100 of this embodiment shown in FIG. 1 includes a plate-like main body member 1, a plate-like roof member 2, and a substrate member 3. However, the heat dissipation part 10 of the lighting fixture 100 of the present embodiment may not include the substrate member 3. Moreover, in the thermal radiation part 10 of the lighting fixture 100 of this embodiment shown in FIG. 1, the plate-shaped roof member 2 is arrange | positioned in the direction opposite to the board | substrate member 3 (front side in the same figure). However, the heat radiation part 10 of the lighting fixture 100 of this embodiment is not limited to this, for example, as shown to FIG. 3 (A), the plate-shaped roof member 2 is the same direction (in the same figure as the board | substrate member 3). (Backward direction). Moreover, in the thermal radiation part 10 of the lighting fixture 100 of this embodiment shown in FIG. 1, the plate-shaped roof member 2 is arrange | positioned so that the upper end whole of the plate-shaped main body member 1 may be covered. However, the heat radiation part 10 of the lighting fixture 100 of this embodiment is not limited to this, You may arrange | position so that a part of upper end of the plate-shaped main body member 1 may be covered. For example, when the both ends of the upper end of the plate-like main body member 1 are rounded like the heat radiating portion 10 shown in FIG. 3B, the plate is formed only on the straight portion as shown in FIG. A shaped roof member 2 may be arranged. Moreover, for example, like the heat radiating part 10 shown in FIG. 4, one plate-like roof member 2 is provided at each end of the upper end of the plate-like main body member 1, and the directions of the two plate-like roof members 2 are different from each other. You may arrange as follows. 4 may be formed by bending an integrated member, or may be formed by combining different members.

[Embodiment 2]
As shown in FIG. 5, the lighting fixture 200 of this embodiment is provided with five heat radiating portions 10 in the lighting fixture 100 of Embodiment 1 shown in FIGS. 1 (A) and 1 (B). The five heat dissipating units 10 are arranged in a parallel state on the back side 20 </ b> A of the illuminating unit 20 without gaps. Except for these points, the lighting fixture 200 of this embodiment is the same as the lighting fixture 100 of Embodiment 1 shown in FIGS. 1 (A) and (B).

  According to the lighting fixture 200 of this embodiment, the five heat radiating portions 10 are arranged on the back side 20 </ b> A of the lighting portion 20 without any gaps in parallel. For this reason, the luminaire 200 of the present embodiment can prevent dust, oil mist, and the like from entering between the plate-like main body members 1 from entering the inside of the heat radiating portion 10 and being accumulated. As a result, the lighting fixture 200 of the present embodiment has long-term stable heat dissipation.

  The lighting fixture 200 of this embodiment shown in FIG. However, the number of the thermal radiation parts 10 of the lighting fixture 200 of this embodiment is not specifically limited. Moreover, in the lighting fixture 200 shown in FIG. 5, each thermal radiation part 10 is arrange | positioned without gap. However, it is not limited to this, The heat dissipation part 10 of the lighting fixture 200 of this embodiment may provide a gap with each other.

[Embodiment 3]
As shown in FIG. 6, the lighting fixture 300 of this embodiment is equipped with the groove-shaped liquid receiving part 21 in the end of 20 A of back parts of the illumination part 20 of the lighting fixture 200 of Embodiment 2 shown in FIG. . The liquid receiving part 21 receives the liquid dropped from the plate-like roof member 2. Except for the point provided with the liquid receiving part 21, the lighting fixture 300 of this embodiment is the same as that of the lighting fixture 200 of Embodiment 2 shown in FIG. By providing the liquid receiving part 21, the liquid can be dropped below the illumination part 20 at a desired position. As shown in FIG. 6, the shape of the liquid receiving portion 21 is a groove shape, but the shape of the liquid receiving portion 21 is not limited to this as long as it receives the liquid.

[Embodiment 4]
FIG. 7 is a perspective view showing a lighting fixture 400 according to another embodiment of the present invention. As for the heat radiating part 40 shown in FIG. 7, the plate-shaped roof member 2 is arrange | positioned in the horizontal direction. Except this, it is the same as that of the lighting fixture 200 of Embodiment 2.

  FIG. 8 shows a state in which the lighting fixture of the present embodiment is attached to the ceiling, FIG. 8 (A) is a perspective view, and FIG. 8 (B) is a left side view of FIG. 8 (A). As shown in FIGS. 8A and 8B, the luminaire 500 includes four shafts 30 as the fixing means 30 in addition to the heat radiating unit 40 and the illuminating unit 20 of the fourth embodiment shown in FIG. And the lighting fixture 500 are attached. As shown in FIGS. 8A and 8B, the two front shafts 30B are shorter in length than the two rear shafts 30A. Thereby, the one end side of the lighting fixture 500 is being fixed in the state inclined with respect to the horizontal direction. Since the lighting fixture 500 of the present embodiment is fixed in a state where the entire lighting fixture 500 is inclined with respect to the horizontal direction, oil mist or the like attached to the plate-like roof member 2 under the environment of a factory or the like is a plate. It can be dripped in the downward direction through the lighting apparatus 500 through the shaped roof member 2. For this reason, the lighting fixture 500 of this embodiment does not accumulate oil mist on the lighting fixture 500, and since there is no problem that the oil mist is combined with dust and remarkably impairs heat dissipation, periodic maintenance is unnecessary. It is.

  In the lighting fixture 500 of this embodiment shown in FIGS. 8A and 8B, four shafts are used as the fixing means 30. However, the lighting fixture 500 of the present embodiment is not limited to this as long as the lighting unit 20 can be fixed to the ceiling in a state inclined with respect to the horizontal direction.

[Embodiment 5]
As shown in FIG. 9, in the heat radiating part 60 of the lighting fixture 600 of this embodiment, the plate-like main body member 1 is inclined toward both ends, and the two plate-like roof members 2 are inclined with respect to the horizontal direction. It is arranged. Except this, the lighting fixture 600 of the present embodiment is the same as the lighting fixture 200 of the second embodiment. In the lighting device 600 of the present embodiment, the plate-like roof member 2 is arranged in the lighting unit 20 in a state of covering a part of the back side 20A of the lighting unit 20, and thus a plate-like shape that is a heat radiation surface of the heat radiation unit 60. It is possible to prevent dust, oil mist, and the like from entering the side surface of the main body member 1 so as to hardly accumulate. As a result, the lighting fixture 600 of the present embodiment has long-term stable heat dissipation.

  Since the heat radiating part 60 of the lighting fixture 600 of this embodiment shown in FIG. 9 includes the opening 5 at the center of the upper end of the plate-like roof member 2, it is possible to promote convection during heat radiation. However, in the heat radiation part 60 shown in FIG. 9, the opening 5 is provided at the center of the upper end of the plate-like roof member 2, but the position of the opening 5 is not limited to this.

  As illustrated in FIG. 10, groove-shaped liquid receiving portions 21 may be provided at both ends of the back side 20 </ b> A of the lighting unit 20 of the lighting fixture 600 of the present embodiment. Thus, when the shape of the plate-shaped roof member 2 is a shape inclined at the both ends, the liquid receiving portion 21 is provided at the both ends, so that the liquid can be efficiently placed below the illumination portion 20 at a desired position. Can be dripped.

[Embodiment 6]
A lighting fixture 700 of the present embodiment shown in FIG. 11 has a rectangular parallelepiped heat radiation portion 70 in which six plate-like main body members 71, one plate-like roof member 72, and a substrate member 73 are integrated. The heat radiating portion 70 has a total of five spaces 74 surrounded by the plate-like main body member 71, the plate-like roof member 72, and the substrate member 73. The lighting fixture 700 of this embodiment differs from the lighting fixture 200 of Embodiment 2 shown in FIG. 5 in that both ends of the entire plate-like roof member 72 are positioned on the plate-like main body member 71. Except for these points, the lighting fixture 700 of this embodiment is the same as the lighting fixture 200 of Embodiment 2 shown in FIG. Also in the lighting fixture 700 of the present embodiment, it is possible to prevent dust, oil mist, and the like from being easily deposited on one side surface of the plate-like main body member 1 that is the heat radiating surface of the heat radiating portion 70, and the lighting fixture 700 of the present embodiment. Has stable heat dissipation over the long term. Also in this embodiment, the board member 73 is an optional component and may or may not be present.

Although the formation method of the heat radiating part 70 of this embodiment shown in FIG. 11 is not particularly limited, for example, there is a method by extrusion molding. That is, the extrusion molded product shown in FIG. 12A is formed by extrusion molding using a general technique. Next, the heat radiation part 70 shown in FIG. 12B can be formed by cutting off the dotted line regions T ₁ and T ₂ . 12B is the same as the heat radiating unit 70 shown in FIG. As described above, when the heat radiation portion is formed by the extrusion molding method, the step of arranging a plate-like roof member which is a separate member on the plate-like main body member can be omitted, so that labor and cost can be reduced. Moreover, the problem that the heat conduction resistance surface is generated on the heat radiation surface of the heat radiation portion 70 (side surface of the plate body member) is avoided in connection with the step of arranging the plate roof member which is a separate member on the plate body member. it can. In FIG. 12 (A) ~ (B) , after a further extrusion, although cut off dotted areas T ₁ and T _2, without being limited thereto, the molded product after extrusion may be used as the heat radiating portion Any unnecessary part may be cut off as appropriate.

  The present invention has been described above with reference to the embodiments. However, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2013-256464 for which it applied on December 11, 2013, and takes in those the indications of all here.

DESCRIPTION OF SYMBOLS 1 Plate-shaped main body member 2 Plate-shaped roof member 3 Substrate member 6 Plate-shaped member 10,40,60,70 Radiating part 20 Illumination part 20A Back part 20B Irradiation side 21 Liquid receiving part 30 Fixing means 100, 200, 300, 400, 500, 600, 700 Lighting equipment

Claims (8)

Including an illumination part and a heat dissipation part,
The illumination unit includes an irradiation side on which light is irradiated and a back side opposite to the irradiation side,
The heat dissipating part includes a plate-like main body member, and a plate-like roof member arranged on one end side of the plate-like main body member in a state substantially perpendicular to the plate-like main body member,
The heat radiating part has the other end opposite to the one end side of the plate-like main body member positioned on the back side of the lighting part, and the plate-like roof member is part or all of the back side of the lighting part. The lighting fixture is arranged in the lighting section in a state of covering the lighting fixture. The lighting apparatus according to claim 1, comprising a plurality of the heat radiating portions, wherein the plurality of heat radiating portions are arranged in parallel on a back side of the lighting portion. The heat radiating portion is manufactured by forming the plate-like main body member and the plate-like roof member by bending one end of the plate-like member in a substantially vertical direction with respect to the other end. The lighting fixture according to claim 1 or 2. The lighting device according to claim 1 or 2, wherein the heat radiating part is manufactured by forming the plate-like main body member and the plate-like roof member by extrusion molding. The luminaire according to any one of claims 1 to 4, wherein the plate-like roof member of the heat radiating portion is inclined with respect to a horizontal direction. Furthermore, including a fixing means,
The lighting device according to any one of claims 1 to 5, wherein the lighting unit can be fixed to the ceiling in a state inclined with respect to a horizontal direction by the fixing means. Furthermore, the lighting fixture as described in any one of Claim 1 to 6 which contains the liquid receiving part for receiving the liquid dripped from the said plate-shaped roof member in the said back part side of the said lighting part. The illuminator according to any one of claims 1 to 7, wherein the illuminating unit includes an LED as a light emitting element.

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