JP6136962B2 - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
JP6136962B2
JP6136962B2 JP2014019580A JP2014019580A JP6136962B2 JP 6136962 B2 JP6136962 B2 JP 6136962B2 JP 2014019580 A JP2014019580 A JP 2014019580A JP 2014019580 A JP2014019580 A JP 2014019580A JP 6136962 B2 JP6136962 B2 JP 6136962B2
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heat
heat radiating
receiving portion
light emitting
antifouling
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JP2015146306A (en
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小林 昭彦
昭彦 小林
卓生 村井
卓生 村井
大介 松原
大介 松原
明日美 屋敷
明日美 屋敷
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Mitsubishi Electric Corp
Mitsubishi Electric Lighting Corp
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Mitsubishi Electric Corp
Mitsubishi Electric Lighting Corp
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Description

本発明は、照明装置に関する。   The present invention relates to a lighting device.

従来、比較的小型で例えば入力1W級程度の小光束のLEDパッケージを複数搭載した基板を大型の放熱部材に装着したLED照明装置が知られている。その放熱効果によりLEDを低温にし、高い発光効率を得ることができる。   2. Description of the Related Art Conventionally, there is known an LED lighting device in which a relatively small substrate, for example, a substrate on which a plurality of LED packages each having a light flux of about 1 W class is mounted is mounted on a large heat radiating member. Due to the heat dissipation effect, the temperature of the LED can be lowered and high luminous efficiency can be obtained.

また、大光束LED光源を備えた少数のユニットで構成し、大きな投入電力に対応した大型の放熱部材に装着した照明装置が実用化されている。この種の照明装置でもLED温度を低温化させることで、高い発光効率を得ることができる。大光束LED光源は、例えば入力数十W級のCOB(Chip On Board)光源である。   Moreover, the illuminating device comprised by the large radiating member corresponding to the big input electric power comprised by the small number of units provided with the high luminous flux LED light source is put in practical use. Even in this type of lighting device, high luminous efficiency can be obtained by lowering the LED temperature. The high luminous flux LED light source is, for example, a COB (Chip On Board) light source with an input of several tens of watts.

大型の放熱部材は多くの場合、鋳物または押出成型で形成されている。このため、放熱部材が重く、結果的に製品が重くなる。放熱部材の冷却効率が低いと更に放熱体を大きくしなければならなくなり重量が増大し、放熱体のコストが高くなる課題があった。   Large radiating members are often formed by casting or extrusion. For this reason, a heat radiating member is heavy, and a product becomes heavy as a result. When the cooling efficiency of the heat radiating member is low, there is a problem that the heat radiating body has to be further increased, the weight is increased, and the cost of the heat radiating body is increased.

これに対し、例えば特開2009−26784号公報に記載されているように、放熱体の軽量化と冷却効率向上のため、金属板を加工して形成した放熱部材を用いた照明装置が知られている。   On the other hand, for example, as described in Japanese Patent Application Laid-Open No. 2009-26784, a lighting device using a heat radiating member formed by processing a metal plate is known for reducing the weight of the heat radiating body and improving the cooling efficiency. ing.

特開2009−26784号公報JP 2009-26784 A 特開2009−16674号公報JP 2009-16664 A

高い放熱性を得るためには、1つの放熱部が有する面積を拡大すること、および1つ1つの放熱部の間隔を狭めることが必要となる。この点に関し、特開2009−26784号公報では、一枚の金属板から放熱部を切り起すときに、隣接する鈎形の二辺、および、隣接するコの字形の三辺からなる切り目を一枚の金属板に多数入れるようにしている。このような切り目を入れて同じ方向に切り起こすと、隣り合う放熱部の間の距離と放熱部の長さ寸法とが反比例してしまう。その結果、大きな面積を有する放熱部を狭い間隔で複数配置することができないという問題があり、放熱部材の放熱性を高めるという観点からは未だ改善の余地を有するものであった。   In order to obtain high heat dissipation, it is necessary to enlarge the area of each heat dissipation part and to narrow the interval between each heat dissipation part. In this regard, in Japanese Patent Application Laid-Open No. 2009-26784, when a heat radiation part is cut and raised from a single metal plate, one cut is made of two adjacent saddle-shaped sides and three adjacent U-shaped three sides. A large number of metal plates are placed. If such a cut is made and cut in the same direction, the distance between adjacent heat radiating portions and the length of the heat radiating portions are inversely proportional. As a result, there is a problem that a plurality of heat dissipating parts having a large area cannot be arranged at a narrow interval, and there is still room for improvement from the viewpoint of enhancing the heat dissipating property of the heat dissipating member.

本発明は、上記のような問題を解決するためになされたもので、高い放熱性を備えた放熱部材を有する照明装置を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an illuminating device having a heat radiating member having high heat radiating properties.

本発明にかかる照明装置は、
発光手段と、
板状の受熱部と、前記受熱部の一辺の側および前記一辺の側の反対側の他辺の側それぞれに複数個ずつ並ぶように前記受熱部から折れ曲がった複数の放熱部と、を有し、前記一辺の側に並ぶ前記放熱部と前記他辺の側に並ぶ前記放熱部との間隔が前記放熱部の長さよりも短い放熱部材と、
一方の面および前記一方の面の反対の他方の面を有し、前記一方の面に前記発光手段が取り付けられ、前記他方の面に前記受熱部が取り付けられた熱拡散部材と、
を備え
前記複数の前記放熱部は、
前記受熱部の前記一辺の側における端から折れ曲がった第1放熱部と、
前記第1放熱部の隣において前記受熱部の前記一辺の側における端から折れ曲がった第2放熱部と、
前記第2放熱部のさらに隣において前記受熱部の前記一辺の側における端から折れ曲がった第3放熱部と、
を含み、
前記第1放熱部と前記受熱部との間の第1折り目部および前記第3放熱部と前記受熱部との間の第3折り目部よりも、前記第2放熱部と前記受熱部との間の第2折り目部が前記一辺の側に突き出るように前記第1〜第3放熱部が前記受熱部から折れ曲がっており、
前記複数の放熱部は、さらに、
前記第1放熱部と予め設定した所定間隔を挟んで向かい合うように、前記受熱部の前記他辺の側における端から折れ曲がった第4放熱部と、
前記第2放熱部と前記所定間隔を挟んで向かい合うように、前記第4放熱部の隣において前記受熱部の前記他辺の側における端から折れ曲がった第5放熱部と、
前記第3放熱部と前記所定間隔を挟んで向かい合うように、前記第5放熱部のさらに隣において前記受熱部の前記他辺の側における端から折れ曲がった第6放熱部と、
を含む。
The lighting device according to the present invention is
Light emitting means;
A plate-shaped heat receiving portion, and a plurality of heat radiating portions bent from the heat receiving portion so as to be arranged in plural on each side of the one side of the heat receiving portion and on the other side opposite to the one side. A heat radiating member in which an interval between the heat radiating portion arranged on the one side and the heat radiating portion arranged on the other side is shorter than a length of the heat radiating portion ;
A heat diffusion member having one surface and the other surface opposite to the one surface, wherein the light emitting means is attached to the one surface, and the heat receiving portion is attached to the other surface;
Equipped with a,
The plurality of heat radiating portions are:
A first heat radiating portion bent from an end on the one side of the heat receiving portion;
A second heat dissipating part bent from an end on the one side of the heat receiving part next to the first heat dissipating part;
A third heat dissipating part that is bent from an end of the heat receiving part on the side of the one side next to the second heat dissipating part;
Including
Rather than the first fold part between the first heat radiating part and the heat receiving part and the third fold part between the third heat radiating part and the heat receiving part, it is between the second heat radiating part and the heat receiving part. The first to third heat radiating portions are bent from the heat receiving portion so that the second fold portion of the second fold portion protrudes toward the one side.
The plurality of heat dissipating parts further includes:
A fourth heat dissipating part bent from an end on the other side of the heat receiving part so as to face the first heat dissipating part across a predetermined interval,
A fifth heat dissipating part bent from an end on the other side of the heat receiving part adjacent to the fourth heat dissipating part so as to face the second heat dissipating part across the predetermined interval;
A sixth heat radiating portion bent from an end on the other side of the heat receiving portion further adjacent to the fifth heat radiating portion so as to face the third heat radiating portion across the predetermined interval;
including.

本発明によれば、受熱部から立ち上がる方向に沿う寸法を長くした放熱部を設けたので、放熱部材の放熱性を高めた照明装置を得ることができる。   According to the present invention, since the heat dissipating part having a longer dimension along the direction rising from the heat receiving part is provided, it is possible to obtain an illuminating device with improved heat dissipating property of the heat dissipating member.

この発明の実施の形態1にかかる照明装置を示す下方斜視図である。It is a downward perspective view which shows the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置を示す上方斜視図である。It is an upper perspective view which shows the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる放熱部材の三面図と斜視図である。It is the 3rd view and perspective view of the heat radiating member concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる放熱部材の展開図である。It is an expanded view of the heat radiating member concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置の側断面図である。It is a sectional side view of the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1にかかる照明装置の上面図である。It is a top view of the illuminating device concerning Embodiment 1 of this invention. この発明の実施の形態1の変形例にかかる照明装置の下方斜視図である。It is a downward perspective view of the illuminating device concerning the modification of Embodiment 1 of this invention. この発明の実施の形態1の変形例にかかる照明装置の下面図である。It is a bottom view of the illuminating device concerning the modification of Embodiment 1 of this invention. この発明の実施の形態1の変形例にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning the modification of Embodiment 1 of this invention. この発明の実施の形態2にかかる照明装置を示す下方斜視図である。It is a downward perspective view which shows the illuminating device concerning Embodiment 2 of this invention. この発明の実施の形態2にかかる照明装置を示す上方斜視図である。It is an upper perspective view which shows the illuminating device concerning Embodiment 2 of this invention. この発明の実施の形態2にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning Embodiment 2 of this invention. この発明の実施の形態2にかかる放熱部材の三面図と斜視図である。It is the 3rd view and perspective view of the heat radiating member concerning Embodiment 2 of this invention. この発明の実施の形態2にかかる放熱部材の展開図である。It is an expanded view of the heat radiating member concerning Embodiment 2 of this invention. この発明の実施の形態2にかかる照明装置の側断面図である。It is a sectional side view of the illuminating device concerning Embodiment 2 of this invention. この発明の実施の形態2にかかる照明装置の上面図である。It is a top view of the illuminating device concerning Embodiment 2 of this invention. この発明の実施の形態2にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 2 of this invention. この発明の実施の形態2の変形例にかかる照明装置の下方斜視図である。It is a downward perspective view of the illuminating device concerning the modification of Embodiment 2 of this invention. この発明の実施の形態2の変形例にかかる照明装置の下面図である。It is a bottom view of the illuminating device concerning the modification of Embodiment 2 of this invention. この発明の実施の形態2の変形例にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning the modification of Embodiment 2 of this invention. この発明の実施の形態3にかかる照明装置を示す下方斜視図である。It is a downward perspective view which shows the illuminating device concerning Embodiment 3 of this invention. この発明の実施の形態3にかかる照明装置を示す上方斜視図である。It is an upper perspective view which shows the illuminating device concerning Embodiment 3 of this invention. この発明の実施の形態3にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning Embodiment 3 of this invention. この発明の実施の形態3にかかる放熱部材の三面図と斜視図である。It is a three-view figure and perspective view of a heat radiating member concerning Embodiment 3 of this invention. この発明の実施の形態3にかかる放熱部材の展開図である。It is an expanded view of the heat radiating member concerning Embodiment 3 of this invention. この発明の実施の形態3にかかる照明装置の側断面図である。It is a sectional side view of the illuminating device concerning Embodiment 3 of this invention. この発明の実施の形態3にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 3 of this invention. この発明の実施の形態3にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 3 of this invention. この発明の実施の形態3にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 3 of this invention. この発明の実施の形態4にかかる照明装置を示す下方斜視図である。It is a downward perspective view which shows the illuminating device concerning Embodiment 4 of this invention. この発明の実施の形態4にかかる照明装置を示す上方斜視図である。It is an upper perspective view which shows the illuminating device concerning Embodiment 4 of this invention. この発明の実施の形態4にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning Embodiment 4 of this invention. この発明の実施の形態4にかかる放熱部材の三面図と斜視図である。It is the 3rd page figure and perspective view of the thermal radiation member concerning Embodiment 4 of this invention. この発明の実施の形態4にかかる照明装置の側断面図である。It is a sectional side view of the illuminating device concerning Embodiment 4 of this invention. この発明の実施の形態4にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 4 of this invention. この発明の実施の形態4にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 4 of this invention. この発明の実施の形態4にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 4 of this invention. この発明の実施の形態4の変形例にかかる照明装置の下方斜視図である。It is a downward perspective view of the illuminating device concerning the modification of Embodiment 4 of this invention. この発明の実施の形態4の変形例にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning the modification of Embodiment 4 of this invention. この発明の実施の形態5にかかる照明装置を示す下方斜視図である。It is a downward perspective view which shows the illuminating device concerning Embodiment 5 of this invention. この発明の実施の形態5にかかる照明装置を示す上方斜視図である。It is an upper perspective view which shows the illuminating device concerning Embodiment 5 of this invention. この発明の実施の形態5にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning Embodiment 5 of this invention. この発明の実施の形態5にかかる放熱部材の三面図と斜視図である。It is the 3rd page figure and perspective view of the heat radiating member concerning Embodiment 5 of this invention. この発明の実施の形態5にかかる照明装置の上面図である。It is a top view of the illuminating device concerning Embodiment 5 of this invention. この発明の実施の形態5にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 5 of this invention. この発明の実施の形態5の変形例にかかる照明装置の下方斜視図である。It is a downward perspective view of the illuminating device concerning the modification of Embodiment 5 of this invention. この発明の実施の形態5の変形例にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning the modification of Embodiment 5 of this invention. この発明の実施の形態6にかかる照明装置を示す下方斜視図である。It is a downward perspective view which shows the illuminating device concerning Embodiment 6 of this invention. この発明の実施の形態6にかかる照明装置を示す上方斜視図である。It is an upper perspective view which shows the illuminating device concerning Embodiment 6 of this invention. この発明の実施の形態6にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning Embodiment 6 of this invention. この発明の実施の形態6にかかる放熱部材の三面図と斜視図である。It is the 3rd view and perspective view of the heat radiating member concerning Embodiment 6 of this invention. この発明の実施の形態6にかかる照明装置の側断面図である。It is a sectional side view of the illuminating device concerning Embodiment 6 of this invention. この発明の実施の形態6にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 6 of this invention. この発明の実施の形態6にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 6 of this invention. この発明の実施の形態6にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 6 of this invention. この発明の実施の形態6の変形例にかかる照明装置の下方斜視図である。It is a downward perspective view of the illuminating device concerning the modification of Embodiment 6 of this invention. この発明の実施の形態6の変形例にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning the modification of Embodiment 6 of this invention. この発明の実施の形態6の変形例にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning the modification of Embodiment 6 of this invention. この発明の実施の形態7にかかる照明装置を示す下方斜視図である。It is a downward perspective view which shows the illuminating device concerning Embodiment 7 of this invention. この発明の実施の形態7にかかる照明装置を示す上方斜視図である。It is an upper perspective view which shows the illuminating device concerning Embodiment 7 of this invention. この発明の実施の形態7にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning Embodiment 7 of this invention. この発明の実施の形態7にかかる放熱部材の三面図と斜視図である。It is the three surface view and perspective view of the heat radiating member concerning Embodiment 7 of this invention. この発明の実施の形態7にかかる照明装置の側断面図である。It is a sectional side view of the illuminating device concerning Embodiment 7 of this invention. この発明の実施の形態7にかかる照明装置の上面図である。It is a top view of the illuminating device concerning Embodiment 7 of this invention. この発明の実施の形態7にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 7 of this invention. この発明の実施の形態7の変形例にかかる照明装置の下方斜視図である。It is a downward perspective view of the illuminating device concerning the modification of Embodiment 7 of this invention. この発明の実施の形態7の変形例にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning the modification of Embodiment 7 of this invention. この発明の実施の形態8にかかる照明装置を示す下方斜視図である。It is a downward perspective view which shows the illuminating device concerning Embodiment 8 of this invention. この発明の実施の形態8にかかる照明装置を示す上方斜視図である。It is an upper perspective view which shows the illuminating device concerning Embodiment 8 of this invention. この発明の実施の形態8にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning Embodiment 8 of this invention. この発明の実施の形態8にかかる放熱部材の三面図と斜視図である。It is the 3rd page figure and perspective view of the thermal radiation member concerning Embodiment 8 of this invention. この発明の実施の形態8にかかる照明装置の側断面図である。It is a sectional side view of the illuminating device concerning Embodiment 8 of this invention. この発明の実施の形態8にかかる照明装置の上面図である。It is a top view of the illuminating device concerning Embodiment 8 of this invention. この発明の実施の形態8にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 8 of this invention. この発明の実施の形態8にかかる照明装置の断面図である。It is sectional drawing of the illuminating device concerning Embodiment 8 of this invention. この発明の実施の形態8の変形例にかかる照明装置の下方斜視図である。It is a downward perspective view of the illuminating device concerning the modification of Embodiment 8 of this invention. この発明の実施の形態8の変形例にかかる照明装置の分解斜視図である。It is a disassembled perspective view of the illuminating device concerning the modification of Embodiment 8 of this invention.

実施の形態1.
以下、図1〜10を用いて、本発明の実施の形態1にかかる照明装置1を説明する。図1は、この発明を実施するための実施の形態1の照明装置全体を示す下方斜視図である。図1に示すように、照明装置1は、内部が空洞である円柱状の筐体2、およびこの筐体2の最上部に設けられた取付部3を備えている。取付部3は、照明装置1を建築物の天井面等に設置する際にボルトやネジ等の締結部材等を用いて取付けられる。
Embodiment 1 FIG.
Hereinafter, the illuminating device 1 concerning Embodiment 1 of this invention is demonstrated using FIGS. FIG. 1 is a lower perspective view showing the entire illumination apparatus of Embodiment 1 for carrying out the present invention. As shown in FIG. 1, the lighting device 1 includes a cylindrical housing 2 having a hollow inside, and a mounting portion 3 provided at the uppermost portion of the housing 2. The attachment portion 3 is attached using a fastening member such as a bolt or a screw when the lighting device 1 is installed on a ceiling surface of a building.

取付部3の下方には、複数の防汚部材4a〜4eが重ねて配置されている。以下、複数の防汚部材4a〜4eを、まとめて防汚部材4と称すことがある。筐体2の下方には、熱拡散部材5が配置されている。熱拡散部材5には通気開口11gが複数個設けられており、この通気開口11gが筐体2の内部と外部とを通風可能に連通させている。それぞれの通気開口11gは扇形であり、8個の通気開口11gが熱拡散部材5の中心を囲むように離間して形成されている。筐体2内の熱拡散部材5の上面には、複数の放熱部材8が配置されている。   Below the attachment portion 3, a plurality of antifouling members 4 a to 4 e are arranged so as to overlap each other. Hereinafter, the plurality of antifouling members 4a to 4e may be collectively referred to as the antifouling member 4. A heat diffusing member 5 is disposed below the housing 2. A plurality of ventilation openings 11g are provided in the heat diffusion member 5, and the ventilation openings 11g communicate with the inside and the outside of the housing 2 so as to allow ventilation. Each of the ventilation openings 11g has a fan shape, and the eight ventilation openings 11g are formed so as to surround the center of the heat diffusion member 5. A plurality of heat radiating members 8 are arranged on the upper surface of the heat diffusing member 5 in the housing 2.

熱拡散部材5の下方には反射体6が配置され、反射体6に透光体7が取り付けられている。反射体6の縁は通気開口11gの輪郭形状と同じとなるように切り欠きが設けられている。切り欠きを設けることで通気開口11gを介した気流の流れが阻害されることなく、筐体2の内部と外部の間で通風させることができ、圧力損失が低減されている。   A reflector 6 is disposed below the heat diffusing member 5, and a translucent body 7 is attached to the reflector 6. The edge of the reflector 6 is provided with a notch so as to be the same as the outline shape of the ventilation opening 11g. By providing the notch, the flow of airflow through the ventilation opening 11g can be prevented from being interrupted between the inside and the outside of the housing 2, and the pressure loss is reduced.

また、反射体6は熱拡散部材5よりも平面方向寸法が小さく、これらが重なったときに反射体6は熱拡散部材5の一部を露出させる。これにより熱拡散部材5の下面の一部を、直接に空気と接触させることができる。   Further, the reflector 6 has a smaller dimension in the plane direction than the heat diffusing member 5, and the reflector 6 exposes a part of the heat diffusing member 5 when they overlap. Thereby, a part of lower surface of the heat-diffusion member 5 can be made to contact air directly.

本実施の形態では透光体7を反射体6の一部にのみ配置している。しかしながら、本発明はこれに限られず、透光体7で反射体6全体を覆うようにすることで反射体6を保護し、空気中の塵埃付着などの汚れで反射体6の反射率が低下することを抑制してもよい。   In the present embodiment, the translucent body 7 is disposed only on a part of the reflector 6. However, the present invention is not limited to this, and the reflector 6 is protected by covering the entire reflector 6 with the translucent body 7, and the reflectance of the reflector 6 decreases due to dirt such as dust adhering in the air. You may suppress doing.

筐体2の下端は、反射体6の表面より下方に突出している。筐体2の下端は、反射枠としての機能を備え、照明装置1の配光制御やグレアの抑制をおこなう。このような機能とともに、筐体2の下端が突出しているので、設置工事時等に照明装置1を床面等に置いた際に床面に筐体2下端のみが接触する。これにより、反射体6や透光体7が床面等に直接接触して汚れることや損傷することを防止することができる。   The lower end of the housing 2 protrudes downward from the surface of the reflector 6. The lower end of the housing 2 has a function as a reflection frame, and controls light distribution of the lighting device 1 and suppresses glare. With such a function, the lower end of the housing 2 protrudes, so that only the lower end of the housing 2 comes into contact with the floor surface when the lighting device 1 is placed on the floor surface during installation work or the like. Thereby, it can prevent that the reflector 6 and the translucent body 7 contact | connect a floor surface etc. directly, and become dirty and damaged.

図2は実施の形態1の照明装置全体を示す上方斜視図である。複数の防汚部材4a〜4eは互いに直径の異なる略円盤状の部材であり、通風可能な通風隙間15を開けつつ筐体2の一端に重ねて配置されている。また、複数の防汚部材4a〜4eは、その最上部に配置される防汚部材4eを除き、中央側に通気開口11a〜11dを備えている。通気開口11a〜11dと通風隙間15を介して、照明装置1の上方において、筐体2の内部と筐体2の外部とが通風可能に連通される。   FIG. 2 is an upper perspective view showing the entire lighting apparatus of the first embodiment. The plurality of antifouling members 4a to 4e are substantially disk-shaped members having different diameters, and are arranged on one end of the housing 2 while opening a ventilation gap 15 that allows ventilation. Further, the plurality of antifouling members 4a to 4e are provided with ventilation openings 11a to 11d on the center side, except for the antifouling member 4e arranged at the uppermost part thereof. Via the ventilation openings 11 a to 11 d and the ventilation gap 15, the interior of the housing 2 and the outside of the housing 2 are communicated with each other so as to allow ventilation.

取付部3から下方には、筐体2の下方端近傍まで柱部3aが伸びている。それぞれの防汚部材4a〜4dは、外周縁から中心に向かって伸びる支持部12a〜12dを備えている。支持部12a〜12dにより取付部3の柱部3aと防汚部材4a〜4dがそれぞれ接続される。   A column part 3 a extends downward from the attachment part 3 to the vicinity of the lower end of the housing 2. Each of the antifouling members 4a to 4d includes support portions 12a to 12d extending from the outer peripheral edge toward the center. The column part 3a of the attachment part 3 and the antifouling members 4a to 4d are connected by the support parts 12a to 12d, respectively.

図3は、本発明の実施の形態1にかかる照明装置1の分解斜視図である。熱拡散部材5の下方には、発光手段13が配置されている。複数の発光手段13は、熱拡散部材5の中心から等間隔かつ等角度に放射状に配置されている。このような配置により良好な配光を得ることができる。発光手段13は、熱拡散部材5の中央側に寄せて、筐体2からは一定距離だけ離して配置されている。これにより筐体2の周辺での多重反射成分に伴う器具効率の低下を抑制するとともに、配光特性の自由度を高めている。なお、「器具効率」とは、一般に、光源から放射される光のうちで利用されている光の割合を意味する。   FIG. 3 is an exploded perspective view of the illumination device 1 according to the first embodiment of the present invention. Below the heat diffusing member 5, light emitting means 13 is arranged. The plurality of light emitting means 13 are radially arranged at equal intervals and at equal angles from the center of the heat diffusing member 5. With such an arrangement, a good light distribution can be obtained. The light emitting means 13 is arranged near the center of the heat diffusing member 5 and separated from the housing 2 by a certain distance. This suppresses a decrease in instrument efficiency associated with multiple reflection components around the housing 2 and increases the degree of freedom of light distribution characteristics. Note that “equipment efficiency” generally means the proportion of light used from light emitted from a light source.

発光手段13は、その基板がアルミニウム合金やセラミックなどの放熱性材料からなるCOB(Chip On Board)光源を用いている。COB光源は、基板上に複数のLEDチップを実装し、蛍光体混合封止樹脂で封止した発光部14が設けられたものである。   The light emitting means 13 uses a COB (Chip On Board) light source whose substrate is made of a heat dissipating material such as an aluminum alloy or ceramic. The COB light source is provided with a light emitting section 14 in which a plurality of LED chips are mounted on a substrate and sealed with a phosphor mixed sealing resin.

発光部14は、比較的小型でありながら、従来のLEDパッケージと比較すると市販品で数〜数十倍の電力を投入して数百〜1万lm程度の光を発するタイプの光源である。COB光源はその表面に電極が設けられている。取付部3に設けられた端子部が建築物の電力線と接続され、筐体2内の配線(図示せず)を通して、COB光源の電極へと通電される。   The light emitting unit 14 is a light source that emits light of several hundred to 10,000 lm by supplying power several to several tens of times as compared with a conventional LED package while being relatively small. An electrode is provided on the surface of the COB light source. A terminal portion provided in the attachment portion 3 is connected to a power line of the building, and is energized to the electrode of the COB light source through a wiring (not shown) in the housing 2.

発光手段13は、図示しない取付手段によって熱拡散部材5に取付けられている。この取り付け手段は、締結部材、取付金具、高熱伝導接着剤、あるいは両面接着サーマルテープ等である。また、発光手段13と熱拡散部材5の間には、必要に応じてサーマルグリス、熱伝導シート、あるいはグラファイトシートなどを挟んでもよい。これらを挟んで配置することで熱伝導や熱拡散を高めることができる。あるいは絶縁シート等の絶縁材料を挟んで配置することで絶縁性を高めたりしてもよい。   The light emitting means 13 is attached to the heat diffusing member 5 by attaching means (not shown). The attachment means is a fastening member, an attachment fitting, a high thermal conductive adhesive, a double-sided adhesive thermal tape, or the like. Further, a thermal grease, a heat conductive sheet, a graphite sheet or the like may be sandwiched between the light emitting means 13 and the heat diffusing member 5 as necessary. Heat conduction and thermal diffusion can be enhanced by placing them between them. Or you may improve insulation by arrange | positioning on both sides of insulating materials, such as an insulating sheet.

発光手段13の下方には、反射体6が配置されている。反射体6は発光手段13の一部を覆っているものの、反射体6は発光部14それぞれの下方に開口6aを備えている。開口6aがあるので、発光部14の光は遮られることはない。反射体6は、高い光学的反射特性を持っている。反射体6は、発光手段13からの発光方向を整えるとともに、発光手段13の基板や配線および結線部分を保護している。   A reflector 6 is disposed below the light emitting means 13. Although the reflector 6 covers a part of the light emitting means 13, the reflector 6 includes an opening 6 a below each light emitting portion 14. Since there is the opening 6a, the light of the light emitting portion 14 is not blocked. The reflector 6 has high optical reflection characteristics. The reflector 6 adjusts the light emission direction from the light emitting means 13 and protects the substrate, wiring, and connection portion of the light emitting means 13.

発光部14の下方には発光部14からの光を透過する透光体7が設けられ、この透光体7が発光部14を保護している。透光体7はレンズとして機能を備えてもよく、これにより光を拡散させる効果を付与することができる。   A light transmitting body 7 that transmits light from the light emitting section 14 is provided below the light emitting section 14, and the light transmitting body 7 protects the light emitting section 14. The translucent body 7 may have a function as a lens, and can thereby impart an effect of diffusing light.

熱拡散部材5の発光手段13の配置面と対向する面には、放熱部材8が配置される。放熱部材8は、熱拡散部材5に接続する受熱部9と、受熱部9と垂直に形成される放熱部10より形成される。複数の放熱部材8は、熱拡散部材5の中心を囲むように放射状に配置されている。複数の放熱部材8の間に通気開口11gがそれぞれ位置するように、熱拡散部材5上に放熱部材8が並べられている。   A heat radiating member 8 is disposed on the surface of the heat diffusing member 5 that faces the surface on which the light emitting means 13 is disposed. The heat radiating member 8 is formed by a heat receiving portion 9 connected to the heat diffusing member 5 and a heat radiating portion 10 formed perpendicular to the heat receiving portion 9. The plurality of heat radiating members 8 are arranged radially so as to surround the center of the heat diffusing member 5. The heat radiating members 8 are arranged on the heat diffusing member 5 so that the ventilation openings 11g are positioned between the plurality of heat radiating members 8, respectively.

受熱部9を熱拡散部材5に接続する手段は、スポット溶接、ハンダによるロウ付け、ピンまたはリベット等によるカシメのいずれかの手段を用いても良い。或いは、高熱伝導接着剤、両面接着サーマルテープ、またはネジ等の締結部材のいずれかの手段を用いても良い。またはここに列挙した手段のうち複数の手段を組合せて受熱部9を熱拡散部材5に接続してもよい。   As a means for connecting the heat receiving portion 9 to the heat diffusing member 5, any means of spot welding, soldering with solder, caulking with pins or rivets may be used. Alternatively, any means of a fastening member such as a high thermal conductive adhesive, a double-sided adhesive thermal tape, or a screw may be used. Or you may connect the heat receiving part 9 to the thermal-diffusion member 5 combining several means among the means enumerated here.

熱拡散部材5と受熱部9の間に、必要に応じてサーマルグリスまたは熱伝導シート等を挟んで接合してもよい。これにより熱抵抗を軽減して、発光手段13から放熱部材8への伝導を良好とし、冷却効率を高めてもよい。   You may join between the thermal-diffusion member 5 and the heat-receiving part 9, pinching | interposing a thermal grease or a heat conductive sheet etc. as needed. This may reduce the thermal resistance, improve the conduction from the light emitting means 13 to the heat radiating member 8, and increase the cooling efficiency.

本実施の形態にかかる照明装置1は8個の発光手段13を備えており、それぞれの発光手段13の冷却を担う8個の放熱部材8が設けられている。しかしながら本発明はこれに限られない。例えば、発光手段13と放熱部材8以外は実施の形態1にかかる照明装置1と同じ構成で、発光手段13と放熱部材8を各4個として熱拡散部材5に十字状に配置してもよい。このようにすることで比較的均等な表面発光強度分布を得ながら、約半分の光束クラスの照明装置を構成することができる。また、発光手段13と放熱部材8を各2個として熱拡散部材5にI字状に配置してもよい。このようにすることで、比較的均等な表面発光強度分布を得ながら、約1/4の光束クラスの照明装置を構成することができる。以上のように、本実施の形態にかかる照明装置1は、部品を共通化および標準化しながら複数の光束クラスの照明装置をラインアップでき、金型等の製造設備への投資を抑制でき、複数の光束クラスの照明装置を低コストで提供することができる。   The lighting device 1 according to the present embodiment includes eight light emitting means 13, and eight heat radiating members 8 for cooling each light emitting means 13 are provided. However, the present invention is not limited to this. For example, except for the light emitting means 13 and the heat radiating member 8, the light emitting means 13 and the heat radiating member 8 may be arranged in a cross shape on the heat diffusing member 5 in the same configuration as the lighting device 1 according to the first embodiment. . By doing so, it is possible to configure an illumination device of about half the luminous flux class while obtaining a relatively uniform surface emission intensity distribution. Alternatively, two light emitting means 13 and two heat radiating members 8 may be arranged on the heat diffusing member 5 in an I shape. By doing in this way, it is possible to configure an illumination device of about ¼ luminous flux class while obtaining a relatively uniform surface emission intensity distribution. As described above, the lighting device 1 according to the present embodiment can line up lighting devices of a plurality of luminous flux classes while standardizing and standardizing parts, and can suppress investment in manufacturing facilities such as molds. It is possible to provide an illumination device of the light flux class at a low cost.

図4は、放熱部材8の斜視図および三面図を示す。放熱部材8は、複数の放熱部10および受熱部9を備えている。図4(a)は放熱部材8の上方斜視図であり、図4(b)〜(d)は放熱部材8の三面図である。図4(b)は放熱部材8の上面図であり、言い換えれば受熱部9の平面図である。図4(c)は放熱部材8の正面図であり、図4(d)は放熱部材8の側面図である。なお、後述する実施の形態2以降においても各実施の形態にかかる放熱部材について同様の三面図を示す際に上面図、正面図、側面図の区別を省略することがある。放熱部材8は良好な熱伝導性を有する材料、具体的にはアルミニウム合金や銅等の金属で形成される。   FIG. 4 shows a perspective view and a three-side view of the heat dissipation member 8. The heat radiating member 8 includes a plurality of heat radiating portions 10 and heat receiving portions 9. 4A is an upper perspective view of the heat radiating member 8, and FIGS. 4B to 4D are three views of the heat radiating member 8. FIG. 4B is a top view of the heat radiating member 8, in other words, a plan view of the heat receiving portion 9. FIG. 4C is a front view of the heat radiating member 8, and FIG. 4D is a side view of the heat radiating member 8. In the second and subsequent embodiments described later, the distinction between the top view, the front view, and the side view may be omitted when the same three-view diagram is shown for the heat dissipation member according to each embodiment. The heat radiating member 8 is formed of a material having good thermal conductivity, specifically, a metal such as an aluminum alloy or copper.

放熱部材8は、複数の放熱ユニット8aに区分することができる。放熱ユニット8aは、向かい合う2つの放熱部10とこの2つの放熱部10で挟まれた受熱部9の一部とで構成されている。複数の放熱ユニット8aは、それぞれの放熱部10の平面は平行を保ちつつも、受熱部9の平面視において、交互にかつ互いに反対方向にずらされている。その結果、1つの放熱部材8は、ジグザグ上にずれて並んだ複数の放熱ユニット8aが連結したものとなっている。それぞれの放熱ユニット8aにおいては、複数の放熱部10が受熱部9の一部をはさんで平行に並ぶように対向している。放熱ユニット8aは側面視でコの字形となっている。   The heat radiating member 8 can be divided into a plurality of heat radiating units 8a. The heat radiating unit 8 a includes two heat radiating portions 10 facing each other and a part of the heat receiving portion 9 sandwiched between the two heat radiating portions 10. The plurality of heat radiating units 8a are shifted alternately and in directions opposite to each other in a plan view of the heat receiving portion 9 while keeping the planes of the respective heat radiating portions 10 parallel. As a result, one heat radiating member 8 is formed by connecting a plurality of heat radiating units 8a arranged in a zigzag manner. In each heat radiating unit 8a, a plurality of heat radiating portions 10 face each other so as to be arranged in parallel with a part of the heat receiving portion 9 interposed therebetween. The heat dissipating unit 8a has a U-shape when viewed from the side.

放熱部10の長さは2種類あり、長さL11と長さL12である。L11はL12よりも長い。これに対し、2つの放熱部10で挟まれた受熱部9の長さは、L2である。長さL2は、長さL11、L12よりも短い。このように、放熱部10は、受熱部9よりも長くされている。放熱部10を長くすることで放熱部10の放熱性を十分に高くすることができる。その結果、それぞれが放熱面積の大きな複数の放熱部10を高い密度で熱拡散部材5の上に設けることができる。   There are two types of length of the heat radiating part 10, which are a length L11 and a length L12. L11 is longer than L12. On the other hand, the length of the heat receiving portion 9 sandwiched between the two heat radiating portions 10 is L2. The length L2 is shorter than the lengths L11 and L12. Thus, the heat radiating part 10 is longer than the heat receiving part 9. By making the heat radiating part 10 long, the heat radiating property of the heat radiating part 10 can be made sufficiently high. As a result, a plurality of heat radiating portions 10 each having a large heat radiating area can be provided on the heat diffusing member 5 with high density.

隣接する2つの放熱ユニット8aは、受熱部9の平面視において互いに間隔Mずつ反対方向にずらして配置されている。その結果、複数の放熱ユニット8aは、それぞれの放熱部10の表面は平行を保ちつつも、受熱部9の平面視においてジグザグ上にずれている。なお、図4(c)に示す破線Pは、平面視における放熱部材8の外郭線Pである。外郭線Pは、平面視における放熱部材8の長手方向寸法線と短手方向寸法線とからなる長方形の線である。   Two adjacent heat radiating units 8a are arranged so as to be shifted in the opposite direction by a distance M from each other in a plan view of the heat receiving portion 9. As a result, the plurality of heat dissipating units 8a are displaced on a zigzag in a plan view of the heat receiving unit 9 while keeping the surfaces of the respective heat dissipating units 10 parallel. A broken line P shown in FIG. 4C is an outline P of the heat radiating member 8 in plan view. The outline P is a rectangular line composed of a longitudinal dimension line and a transverse dimension line of the heat radiation member 8 in plan view.

隣接する放熱部10をずらす間隔Mは、好ましくは5mm以上とする。これにより、放熱部材8を熱拡散部材5に取付ける工程において、スポット溶接やカシメをおこなう治具を放熱部10間の隙間から挿入して受熱部9を熱拡散部材5に固定する加工を容易にすることができ、組立て性を高めることができる。放熱部10はアルマイト処理(素材がアルミニウム合金の場合)や放射率を高める塗装等の放射率を高める手段を講じて冷却効率を高めてもよい。   The interval M for shifting the adjacent heat radiating portions 10 is preferably 5 mm or more. Thereby, in the process of attaching the heat radiating member 8 to the heat diffusing member 5, it is easy to insert a jig for spot welding or caulking from the gap between the heat radiating portions 10 to fix the heat receiving portion 9 to the heat diffusing member 5. It is possible to improve the assembly. The heat dissipating unit 10 may increase the cooling efficiency by providing means for increasing the emissivity, such as anodizing (when the material is an aluminum alloy) or painting for increasing the emissivity.

図5は、放熱部材8の展開図である。放熱部材8は長方形の1枚の板材をプレス加工等で成形することで製造される。これにより高い歩留まりかつ低コストで放熱部材8を製造することができる。図5に示すように、1枚の板材の一辺には、3つの切り目30が板材の中央に向かって途中まで設けられている。この1枚の板材の他辺には、3つの切り目31が板材の中央に向かって途中まで設けられている。   FIG. 5 is a development view of the heat radiating member 8. The heat dissipating member 8 is manufactured by molding a single rectangular plate material by pressing or the like. Thereby, the heat radiating member 8 can be manufactured with high yield and low cost. As shown in FIG. 5, three cuts 30 are provided on one side of one plate material halfway toward the center of the plate material. On the other side of the single plate material, three cuts 31 are provided halfway toward the center of the plate material.

図5には、プレス加工時における折り目32、33も図示している。折り目32、33から板材の端部までの距離は、長さL11と長さL12とで交互に設定されている。切り目31、32の数に応じて放熱部10の数が決まり、折り目32、33の位置に応じて各放熱部の長さ寸法L11、L12が決まる。切り目30側の折り目32は、ジグザグにずらして設けられている。切り目31側の折り目33は、折り目32と所定間隔を置いて平行に並べられており、折り目32と同じくジグザグにずらして設けられている。折り目32および折り目33で図5に示す1枚の板材にプレス加工等を施すことで、2つの放熱部10を向かい合わせに起こす。   FIG. 5 also shows the folds 32 and 33 during press working. The distances from the creases 32 and 33 to the end portions of the plate material are alternately set by the length L11 and the length L12. The number of the heat radiating portions 10 is determined according to the number of the cut lines 31 and 32, and the length dimensions L11 and L12 of the respective heat radiating portions are determined according to the positions of the fold lines 32 and 33. The fold line 32 on the cut line 30 side is provided in a zigzag manner. The fold line 33 on the cut line 31 side is arranged in parallel with the fold line 32 at a predetermined interval, and is provided in a zigzag manner in the same manner as the fold line 32. The two heat radiating portions 10 are caused to face each other by applying a pressing process or the like to one plate material shown in FIG.

図6は、照明装置1をその中心軸に沿って切断した断面図を示す。互いに隣接する二つの防汚部材4e、4dを比較すると、上方の防汚部材4eの縁が下方の防汚部材4dの通気開口11dの外周よりも、外側に突出している。その結果、図6に示すように、防汚部材4d、4eの間に、重なり4fが設けられている。   FIG. 6 shows a cross-sectional view of the lighting device 1 cut along its central axis. When the two antifouling members 4e and 4d adjacent to each other are compared, the edge of the upper antifouling member 4e protrudes outward from the outer periphery of the ventilation opening 11d of the lower antifouling member 4d. As a result, as shown in FIG. 6, an overlap 4f is provided between the antifouling members 4d and 4e.

重なり4fがあることで、防汚部材4eの上方から落下してくる塵埃が、防汚部材4dの通気開口11dに入ることを抑制でき、その塵埃が筐体2内の放熱部材8へ付着するのを抑制することができる。その結果、経年変化による冷却効率低下を軽減することができる。この関係は、防汚部材4a〜4eのうち互いに隣接する二つの間で成り立っている。   Due to the overlap 4f, dust falling from above the antifouling member 4e can be prevented from entering the ventilation opening 11d of the antifouling member 4d, and the dust adheres to the heat radiating member 8 in the housing 2. Can be suppressed. As a result, a decrease in cooling efficiency due to aging can be reduced. This relationship is established between two adjacent antifouling members 4a to 4e.

図7〜11は、照明装置1をその高さ方向の異なる位置でスライスした断面を見下ろした断面図である。図7〜11の断面A1〜E1は、図6に示した断面A1〜E1が指し示す位置とそれぞれ対応している。図12は、照明装置1の上面図である。   7-11 is sectional drawing which looked down at the cross section which sliced the illuminating device 1 in the position where the height direction differs. 7 to 11 correspond to the positions indicated by the cross sections A1 to E1 shown in FIG. FIG. 12 is a top view of the lighting device 1.

図7は、図6の「断面A1」を示しており、防汚部材4aの直下において照明装置1をスライスし、下方に見下ろした断面図である。便宜上、放熱部材8および熱拡散部材5を透視して、破線で発光手段13を図示している。受熱部9と発光手段13は、熱拡散部材5を挟んで平面視で少なくとも一部が重なるように配置されている。このようにすることで熱の伝達する距離を短くすることができ、熱抵抗を軽減できる。   FIG. 7 shows a “cross section A1” of FIG. 6, and is a cross-sectional view in which the lighting device 1 is sliced just below the antifouling member 4a and looked down. For convenience, the light-emitting means 13 is illustrated with broken lines through the heat radiating member 8 and the heat diffusing member 5. The heat receiving unit 9 and the light emitting means 13 are arranged so that at least a part thereof overlaps in plan view with the heat diffusing member 5 interposed therebetween. By doing in this way, the distance which heat | fever transmits can be shortened and thermal resistance can be reduced.

発光手段13の発熱は、熱拡散部材5の熱伝導により熱拡散部材5の外周側および中央側に伝わり、熱拡散部材5の上方の受熱部9に伝わって放熱部10にて放熱される。これにより発光手段13が冷却されるようになっている。熱拡散部材5の中央側は放熱部材8が密集するので放熱部10の密度が高くなり、冷却効率が低下する傾向にある。しかし、隣り合う放熱部材8の間を仕切るように、通気開口11gが熱拡散部材5の外周側から中央側にかけて開口している。通気開口11gの端部は、最も熱拡散部材5の中央側に位置する放熱部10の中央側端部まで伸びている。このため、熱拡散部材5の最も中央側の放熱部10と当たるように冷却風が十分に供給される。これにより、熱拡散部材5の中央側においても放熱部10が放熱に寄与し、冷却効率の低下を抑制している。   The heat generated by the light emitting means 13 is transmitted to the outer peripheral side and the center side of the heat diffusing member 5 by heat conduction of the heat diffusing member 5, is transmitted to the heat receiving portion 9 above the heat diffusing member 5, and is radiated by the heat radiating portion 10. Thereby, the light emitting means 13 is cooled. Since the heat radiating member 8 is densely packed on the center side of the heat diffusing member 5, the density of the heat radiating portion 10 is increased, and the cooling efficiency tends to be lowered. However, the ventilation opening 11g opens from the outer peripheral side to the center side of the heat diffusing member 5 so as to partition the adjacent heat radiating members 8. The end portion of the ventilation opening 11g extends to the center side end portion of the heat radiating portion 10 located closest to the center side of the heat diffusing member 5. For this reason, the cooling air is sufficiently supplied so as to come into contact with the heat radiating portion 10 on the most central side of the heat diffusing member 5. Thereby, also in the center side of the thermal diffusion member 5, the thermal radiation part 10 contributes to thermal radiation, and suppresses the fall of cooling efficiency.

図7に示すように、通気開口11gの縁と放熱部10の表面は、段差無く揃っている。ここでいう「段差無く」とは、熱拡散部材5における通気開口11gが設けられた部分の内周面と、放熱部10の外側表面とが、段差無くフラットな状態で揃っていることを意味している。いわゆる面一という状態である。   As shown in FIG. 7, the edge of the ventilation opening 11g and the surface of the heat radiating portion 10 are aligned without any step. Here, “without a step” means that the inner peripheral surface of the portion of the heat diffusing member 5 provided with the vent opening 11g and the outer surface of the heat radiating portion 10 are aligned in a flat state without a step. doing. It is in a so-called state.

特に、本実施の形態では、放熱部材8の短手方向寸法と、熱拡散部材5における放熱部材8の搭載面の幅とを、同じ幅Wに設計している。従って、放熱部材8の両脇において、通気開口11gの縁と放熱部10の外側表面とが段差無く揃っている。その結果、放熱部10の上昇気流に伴い通気開口11gから流入する冷却風が放熱部10の外側面に接触しやすくなるので、冷却効率を高めることができる。また、間隔Mだけずらして設けられた複数の放熱部10の隙間に冷却風が流入しやすくなり、放熱部10の内側面の冷却効率も高めることができる。   In particular, in the present embodiment, the lateral dimension of the heat radiating member 8 and the width of the mounting surface of the heat radiating member 8 in the heat diffusing member 5 are designed to be the same width W. Therefore, on both sides of the heat radiating member 8, the edge of the ventilation opening 11g and the outer surface of the heat radiating portion 10 are aligned without any step. As a result, the cooling air flowing from the ventilation opening 11g along with the rising airflow of the heat radiating unit 10 can easily come into contact with the outer surface of the heat radiating unit 10, so that the cooling efficiency can be increased. Moreover, it becomes easy for the cooling air to flow into the gaps between the plurality of heat dissipating units 10 that are shifted by the interval M, and the cooling efficiency of the inner surface of the heat dissipating unit 10 can be increased.

図8は、図6における「断面B1」で照明装置1をスライスし、図6の紙面下方に向かって見下ろした図である。図8には、複数の防汚部材4a〜4dのうち、熱拡散部材5に最も近い防汚部材4aが図示されている。図8に示すように、防汚部材4aの中心から放射状に複数の通気開口11aが設けられている。それぞれの通気開口11aは、放熱部材8の上方において放熱部材8の外郭線Pをなぞるように設けられ、放熱部材8の外郭線Pより一回り大きくなるように設けられている。ただし、防汚部材4aの中央側の2つの角のうち一方に切欠段部11acが設けられている。このように通気開口11aを設けることで、放熱部材8から上昇する冷却風を少ない通気抵抗で通過させることができる。また、冷却風が円滑に上昇することで、放熱部10の両外側から流入する冷却風が、さらに放熱部10の内側に向かうようにスムーズに流れる。このような気流を形成することで、対向する放熱部10の間へ冷却風を誘引し、放熱部10の内側面の冷却効率を高めることができる。   FIG. 8 is a view obtained by slicing the illuminating device 1 along “cross section B1” in FIG. 6 and looking down toward the lower side of the drawing sheet of FIG. FIG. 8 illustrates the antifouling member 4a closest to the heat diffusing member 5 among the plurality of antifouling members 4a to 4d. As shown in FIG. 8, a plurality of ventilation openings 11a are provided radially from the center of the antifouling member 4a. Each vent opening 11 a is provided above the heat radiating member 8 so as to trace the outline P of the heat radiating member 8, and is provided to be slightly larger than the outline P of the heat radiating member 8. However, a notch step portion 11ac is provided at one of the two corners on the center side of the antifouling member 4a. By providing the ventilation opening 11a in this way, the cooling air rising from the heat radiating member 8 can be passed with a small ventilation resistance. In addition, the cooling air smoothly rises so that the cooling air flowing from both outer sides of the heat radiating unit 10 flows smoothly so as to go further to the inner side of the heat radiating unit 10. By forming such an air flow, cooling air can be attracted between the opposing heat radiating portions 10, and the cooling efficiency of the inner surface of the heat radiating portion 10 can be increased.

より好ましくは、熱拡散部材5の通気開口11gの外側端部よりも内側に、防汚部材4aの通気開口11aの外側端部を設ける。このようにすることで、筐体2の外周側から中央側へ向かうように流れる冷却風の流れを形成し、熱拡散部材5の中央側に配置された放熱部10の冷却効率を高めることができる。   More preferably, the outer end of the ventilation opening 11a of the antifouling member 4a is provided inside the outer end of the ventilation opening 11g of the heat diffusion member 5. By doing in this way, the flow of the cooling air which flows so that it may go to the center side from the outer peripheral side of the housing | casing 2 is formed, and the cooling efficiency of the thermal radiation part 10 arrange | positioned at the center side of the thermal-diffusion member 5 can be improved. it can.

図9〜11は、それぞれ図6における「断面C1」「断面D1」又は「断面E1」で照明装置1をスライスし、図6の紙面下方に向かって見下ろした図である。図9には、防汚部材4b、通気開口11b、支持部12b、および、通気開口11bの下方側の放熱部材8が図示されている。図10には、防汚部材4c、通気開口11c、支持部12c、および、通気開口11cの下方側の放熱部材8が図示されている。図11には、防汚部材4d、通気開口11d、支持部12d、および、通気開口11dの下方側の放熱部材8が図示されている。   9 to 11 are views in which the illuminating device 1 is sliced at the “cross section C1”, “cross section D1”, or “cross section E1” in FIG. 6 and looked down toward the lower side of FIG. FIG. 9 shows the antifouling member 4b, the ventilation opening 11b, the support portion 12b, and the heat radiation member 8 below the ventilation opening 11b. FIG. 10 shows the antifouling member 4c, the ventilation opening 11c, the support portion 12c, and the heat radiation member 8 below the ventilation opening 11c. FIG. 11 shows the antifouling member 4d, the ventilation opening 11d, the support portion 12d, and the heat radiation member 8 below the ventilation opening 11d.

図6および図9を対比するとわかるように、断面C1において通気開口11aの外側端部よりも通気開口11bの外側端部のほうが、照明装置1の中央側に位置している。ここでいう「通気開口11aの外側端部」は、それぞれの通気開口11aの縁のうち防汚部材4aの最も外周側の端部をいうものとする。同様に、「通気開口11bの外側端部」は、それぞれの通気開口11bの縁のうち防汚部材4bの最も外周側の端部をいうものとする。このようにすることで、防汚部材4bの外周側下面が、その直下の通気開口11aの外側の一部に被さる。これにより、図6に示すように、放熱部材8からの上昇気流F1を、防汚部材4aと防汚部材4bとの間の通風隙間15へと導くことができる。   As can be seen by comparing FIG. 6 and FIG. 9, the outer end portion of the vent opening 11 b is positioned closer to the center of the lighting device 1 than the outer end portion of the vent opening 11 a in the cross section C <b> 1. The “outer end portion of the ventilation opening 11a” herein refers to the outermost end portion of the antifouling member 4a among the edges of the ventilation openings 11a. Similarly, the “outer end portion of the ventilation opening 11b” refers to the outermost end portion of the antifouling member 4b among the edges of the ventilation openings 11b. By doing in this way, the outer peripheral side lower surface of the antifouling member 4b covers a part of the outside of the ventilation opening 11a immediately below it. Thereby, as shown in FIG. 6, the upward air flow F1 from the heat radiating member 8 can be guided to the ventilation gap 15 between the antifouling member 4a and the antifouling member 4b.

同様に、図6および図10、11を対比するとわかるように、断面D1、E1それぞれにおいて、通気開口11b〜11dのうち相対的に下側の通気開口の外側端部よりも、通気開口11b〜11dのうち相対的に上側の通気開口の外側端部のほうが、照明装置1の中央側に位置している。こうすることで、防汚部材4c、4dそれぞれの下面が、その直下の通気開口11b、11cの外側の一部に被さる。その結果、図6に示すように、放熱部材8からの上昇気流F2〜F4それぞれが、防汚部材4b〜4eの間に設けた通風隙間15それぞれへと導かれる。   Similarly, as can be seen by comparing FIG. 6 and FIGS. 10 and 11, in each of the cross sections D <b> 1 and E <b> 1, the ventilation openings 11 b- The outer end portion of the relatively upper ventilation opening in 11 d is located on the center side of the lighting device 1. By doing so, the lower surfaces of the antifouling members 4c and 4d cover a part of the outside of the ventilation openings 11b and 11c immediately below the antifouling members 4c and 4d. As a result, as shown in FIG. 6, the ascending airflows F <b> 2 to F <b> 4 from the heat radiating member 8 are respectively guided to the ventilation gaps 15 provided between the antifouling members 4 b to 4 e.

このようにすることで、熱拡散部材5及び放熱部材8からの冷却に伴う上昇気流F1〜F4を、防汚部材4a〜4eの間に設けた通風隙間15に導くことができる。本実施の形態にかかる通風隙間15は、図6における断面B1〜E1の高さ位置にそれぞれ設けられた合計4つの環状の隙間である。このように多段に設けられた環状の通風隙間15により、筐体2内部の排気を複数の環状の開口に分割して流すことができる。   By doing in this way, the updraft F1-F4 accompanying the cooling from the thermal-diffusion member 5 and the heat radiating member 8 can be guide | induced to the ventilation gap 15 provided between the antifouling members 4a-4e. The ventilation gap 15 according to the present embodiment is a total of four annular gaps respectively provided at the height positions of the cross sections B1 to E1 in FIG. Thus, the exhaust air inside the housing 2 can be divided into a plurality of annular openings and flowed by the annular ventilation gaps 15 provided in multiple stages.

また、例えば図2の上方斜視図からわかるように、通風隙間15は、照明装置1の外周側から中央側に向かって直径の異なる複数の環状の開口を形成している。熱拡散部材5の外周側に位置する放熱部10で発生する上昇気流F1のみならず、熱拡散部材5の中心付近に位置する放熱部10で発生する上昇気流F4についても、少ない圧力損失で筐体2の外へと排出される。その結果、発光手段13の冷却効率が高められている。   For example, as can be seen from the upper perspective view of FIG. 2, the ventilation gap 15 forms a plurality of annular openings having different diameters from the outer peripheral side of the lighting device 1 toward the central side. Not only the rising air flow F1 generated in the heat radiating portion 10 located on the outer peripheral side of the heat diffusing member 5, but also the rising air flow F4 generated in the heat radiating portion 10 located near the center of the heat diffusing member 5 with a small pressure loss. It is discharged out of the body 2. As a result, the cooling efficiency of the light emitting means 13 is enhanced.

次に、照明装置1の動作及び冷却作用について説明する。照明装置1においては、発光手段13に電力が供給されると発光部14が発光するとともに、光に変換されなかった電力は熱となり発光手段13の温度が上昇する。発光手段13の発光効率の向上と動作寿命を向上するためには、発光手段13に対する冷却が必要となる。   Next, operation | movement and cooling effect | action of the illuminating device 1 are demonstrated. In the illuminating device 1, when electric power is supplied to the light emitting means 13, the light emitting unit 14 emits light, and the electric power that has not been converted into light becomes heat and the temperature of the light emitting means 13 rises. In order to improve the light emission efficiency and the operating life of the light emitting means 13, the light emitting means 13 needs to be cooled.

発光手段13の発熱は、熱拡散部材5に伝わる。熱拡散部材5の内部で熱伝導が起きることにより、熱拡散部材5と発光手段13とが接する部位から離れた場所まで熱が伝達し、熱拡散部材5の全体の温度が上昇する。   The heat generated by the light emitting means 13 is transmitted to the heat diffusing member 5. When heat conduction occurs inside the heat diffusing member 5, heat is transmitted to a place away from the portion where the heat diffusing member 5 and the light emitting means 13 are in contact with each other, and the overall temperature of the heat diffusing member 5 rises.

熱拡散部材5の全体へと伝わった熱は、受熱部9が受け取る。受熱部9が受け取った熱は、熱伝導により受熱部9から放熱部10へと伝わり、放熱部10の温度が上昇する。放熱部10に伝わった熱は、放熱部10の表面より自然対流による熱伝達で周囲の空気に伝わるとともに、放射により周囲に伝熱される。   The heat received by the heat diffusion member 5 is received by the heat receiving unit 9. The heat received by the heat receiving unit 9 is transmitted from the heat receiving unit 9 to the heat radiating unit 10 by heat conduction, and the temperature of the heat radiating unit 10 rises. The heat transmitted to the heat radiating unit 10 is transmitted from the surface of the heat radiating unit 10 to the surrounding air by heat transfer by natural convection and is also transmitted to the surroundings by radiation.

放熱部材8の温度上昇による自然対流で生じる冷却風は、通気開口11gより筐体2内に流入して、放熱部10の外側面と接触する。さらに、この冷却風は、放熱部10の間の隙間より、放熱部10の内側面にも流入して、内側面と接触しながら受熱して放熱部10を冷却する。上方の防汚部材4aの通気開口11aを通過して、防汚部材4b〜4eの間の通風隙間15より筐体2外へ流出する。このような流れで、発光手段13の発熱が、筐体2外へ放熱される。   Cooling air generated by natural convection due to the temperature rise of the heat dissipating member 8 flows into the housing 2 through the ventilation opening 11g and contacts the outer surface of the heat dissipating part 10. Further, the cooling air flows into the inner side surface of the heat radiating unit 10 from the gap between the heat radiating units 10 and receives heat while contacting the inner side surface to cool the heat radiating unit 10. The air passes through the ventilation opening 11a of the upper antifouling member 4a and flows out of the housing 2 through the ventilation gap 15 between the antifouling members 4b to 4e. With this flow, the heat generated by the light emitting means 13 is radiated to the outside of the housing 2.

なお、上述した図7に示す断面A1の構成を、図13〜15に示す変形例と置換しても良い。図13〜15は、実施の形態1の変形例にかかる照明装置51を示す図である。図13は照明装置51の下方斜視図であり、図14は照明装置51の下面図である。照明装置51は、熱拡散部材55および反射体56を備えている。図15に示すように、熱拡散部材55は、通気開口11gと同様に、複数の通気開口61を備えている。通気開口61は、平面視において、放熱部材8の外郭線Pよりも内側に凹む切欠部61aおよび切欠部61bを有している。   In addition, you may substitute the structure of the cross section A1 shown in FIG. 7 mentioned above with the modification shown in FIGS. 13-15 is a figure which shows the illuminating device 51 concerning the modification of Embodiment 1. As shown in FIG. FIG. 13 is a lower perspective view of the lighting device 51, and FIG. 14 is a bottom view of the lighting device 51. The lighting device 51 includes a heat diffusing member 55 and a reflector 56. As shown in FIG. 15, the heat diffusing member 55 includes a plurality of ventilation openings 61 as with the ventilation openings 11g. The ventilation opening 61 has a cutout portion 61 a and a cutout portion 61 b that are recessed inward from the outline P of the heat dissipation member 8 in plan view.

放熱部材8は、上述したように放熱ユニット8aがジグザグに設けられていることから、外郭線Pに接する放熱部10と、外郭線Pよりも内側に位置する放熱部10とを備えている。照明装置51では切欠部61aおよび切欠部61bが設けられているので、外郭線Pより内側に位置する放熱部10の外側面が、通気開口61の縁と近接するか或いは段差無く揃うこととなる。これにより放熱部10が冷却風と接しやすくなり、冷却効率が高まる。さらに、2つの放熱部10の間の隙間と通気開口61がより近接することで、放熱部10の間の隙間への冷却風の流入がより容易となる。その結果、放熱部10の内側面の冷却効率が高まり、発光手段13を低温化でき発光効率が高まる。さらに、同一の冷却効率を得る観点からは本変形例のほうが冷却効率が高いので、実施の形態1と比較して放熱部10の面積を小さくしてもよくなる。その結果、照明装置51は、照明装置1よりも低コストで軽量とすることができる。   Since the heat radiating member 8 is provided in a zigzag manner as described above, the heat radiating member 8 includes the heat radiating portion 10 that is in contact with the outline line P and the heat radiating portion 10 that is located inside the outline line P. Since the lighting device 51 is provided with the cutout portion 61a and the cutout portion 61b, the outer surface of the heat radiating portion 10 located on the inner side of the outline P is close to the edge of the vent opening 61 or aligned without a step. . Thereby, the thermal radiation part 10 becomes easy to contact cooling air, and cooling efficiency increases. Furthermore, since the gap between the two heat radiating portions 10 and the vent opening 61 are closer, it becomes easier for the cooling air to flow into the gap between the heat radiating portions 10. As a result, the cooling efficiency of the inner surface of the heat radiating part 10 is increased, the temperature of the light emitting means 13 can be lowered, and the light emitting efficiency is increased. Furthermore, from the viewpoint of obtaining the same cooling efficiency, the present modification has a higher cooling efficiency, so the area of the heat radiating portion 10 may be reduced as compared with the first embodiment. As a result, the illuminating device 51 can be made lower in cost and lighter than the illuminating device 1.

以上説明した実施の形態1によれば、照明装置1は、発光手段13と、放熱部材8と、熱拡散部材5を備えている。放熱部材8は、一枚の板材の一辺から板材の中央に向かう切り目、およびこの一辺とは反対の他辺から板材の中央に向かう切り目を設け、側面視でコの字形状となるように板材の中央に向けて一辺の側および他辺の側をそれぞれ起こしたものである。放熱部材8は、互いに対向する複数の放熱部10および複数の放熱部10の端部それぞれに接続する受熱部9を備えている。熱拡散部材5は、一方の面およびこの一方の面の反対の他方の面を有し、一方の面に発光手段13が取り付けられ、他方の面に受熱部9が取り付けられている。   According to Embodiment 1 demonstrated above, the illuminating device 1 is equipped with the light emission means 13, the heat radiating member 8, and the thermal-diffusion member 5. FIG. The heat dissipating member 8 is provided with a cut from one side of the plate material toward the center of the plate material, and a cut from the other side opposite to the one side toward the center of the plate material so that the plate member has a U-shape when viewed from the side. One side and the other side are raised to the center of each. The heat radiating member 8 includes a plurality of heat radiating portions 10 facing each other and a heat receiving portion 9 connected to each end of the plurality of heat radiating portions 10. The heat diffusing member 5 has one surface and the other surface opposite to the one surface, the light emitting means 13 is attached to one surface, and the heat receiving portion 9 is attached to the other surface.

このような構成によれば、放熱部材8を一枚の金属板から高い歩留まりで製造できる。また、放熱部材8の軽量化および低コスト化が可能である。また、単純な形状とすることで受熱部9の平面度が高まり、受熱部9と熱拡散部材5との間の伝熱が良好となり、熱抵抗を小さくでき、冷却効率が向上する。また、熱拡散部材5内の熱伝導により発光手段13からの熱が熱拡散部材5の全体に拡散され、放熱部材8全体を冷却に寄与させることができ、冷却効率が高まる。複数の放熱部10の間の隙間は、冷却風の流入路として機能し、放熱部10の両面が冷却に寄与することで冷却効率が高まる。また、放熱部材8の数と配置の少なくとも一方を容易に調整できる。従って発光手段13の搭載個数と配置の少なくとも一方について自由度が高く、適切な光束クラス、表面発光強度分布、および良好な意匠を得ることができる。   According to such a structure, the heat radiating member 8 can be manufactured from a single metal plate with a high yield. Moreover, the weight reduction and cost reduction of the heat radiating member 8 are possible. Moreover, the flatness of the heat receiving part 9 is increased by adopting a simple shape, the heat transfer between the heat receiving part 9 and the heat diffusing member 5 is improved, the thermal resistance can be reduced, and the cooling efficiency is improved. Further, heat from the light emitting means 13 is diffused throughout the heat diffusing member 5 due to heat conduction in the heat diffusing member 5, and the entire heat radiating member 8 can be contributed to cooling, and cooling efficiency is increased. The gaps between the plurality of heat radiating portions 10 function as cooling air inflow passages, and cooling efficiency is enhanced by both surfaces of the heat radiating portion 10 contributing to cooling. Further, at least one of the number and arrangement of the heat radiating members 8 can be easily adjusted. Therefore, the degree of freedom is high with respect to at least one of the number and arrangement of the light emitting means 13, and an appropriate luminous flux class, surface emission intensity distribution, and good design can be obtained.

放熱部材8は、複数の放熱ユニット8aを備えている。放熱ユニット8aは、向かい合う2つの放熱部10とこの2つの放熱部10で挟まれた受熱部9の一部とで構成されている。複数の放熱ユニット8aは、受熱部9の平面視においてジグザグ上にずれて設けられている。間隔Mだけジグザグに位置をずらして放熱部10を配置することで隙間が生ずるので、長手方向全体でみたときの放熱部10間への冷却風の流入がより容易となる。その結果、冷却風が流入しにくく冷却効率が低下しやすい中間部においても、放熱部10の内面側に十分に冷却風を供給でき、冷却効率を高めることができる。
特に、放熱部材8では、それぞれの放熱部10の平面は平行を保ちつつ、複数の放熱ユニット8aは、受熱部9の平面視においてジグザグ上にずれて設けられている。従って、受熱部9の鉛直上方に向かって垂直に複数の放熱部10が伸び、受熱部9の鉛直上方に空気が円滑に流れる。
The heat radiating member 8 includes a plurality of heat radiating units 8a. The heat radiating unit 8 a includes two heat radiating portions 10 facing each other and a part of the heat receiving portion 9 sandwiched between the two heat radiating portions 10. The plurality of heat radiating units 8 a are provided on the zigzag in a plan view of the heat receiving portion 9. Since the gap is generated by disposing the heat dissipating part 10 by shifting the position in a zigzag manner by the interval M, it becomes easier for the cooling air to flow between the heat dissipating parts 10 when viewed in the entire longitudinal direction. As a result, the cooling air can be sufficiently supplied to the inner surface side of the heat radiating portion 10 even in the intermediate portion where the cooling air hardly flows and the cooling efficiency is likely to be lowered, and the cooling efficiency can be increased.
Particularly, in the heat radiating member 8, the plurality of heat radiating units 8 a are provided on the zigzag in a plan view of the heat receiving portion 9 while keeping the planes of the respective heat radiating portions 10 parallel. Therefore, the plurality of heat radiating portions 10 extend vertically upward of the heat receiving portion 9 and air smoothly flows vertically above the heat receiving portion 9.

実施の形態1では、隣接する放熱部10間の間隔Mは、好ましくは5mm以上とされる。これにより、放熱部材8を熱拡散部材5へ取付加工するための治具の挿入が容易である。その結果、組立性が向上して組立コストを低減することができる。なお、本実施の形態では間隔Mを5mm以上としたが、本発明はこれに限られない。取付をおこなう箇所付近の放熱部10を削除してもよい。この場合には、片側だけ放熱部10が設けられた受熱部9の一部、あるいは放熱部10が設けられていない受熱部9の一部が生じる。このように放熱部10を間引くことで作業性を高めてもよい。   In the first embodiment, the interval M between the adjacent heat radiating portions 10 is preferably 5 mm or more. Thereby, it is easy to insert a jig for attaching the heat radiating member 8 to the heat diffusing member 5. As a result, the assembling property can be improved and the assembling cost can be reduced. In the present embodiment, the interval M is set to 5 mm or more, but the present invention is not limited to this. You may delete the thermal radiation part 10 near the location which performs attachment. In this case, a part of the heat receiving part 9 in which the heat radiating part 10 is provided only on one side or a part of the heat receiving part 9 in which the heat radiating part 10 is not provided is generated. Thus, workability may be improved by thinning out the heat dissipating part 10.

熱拡散部材5には、その中心から通気開口11gが放射状に形成されている。この通気開口11gは、隣り合う2つの放熱部材8の間に通風可能な開口である。このような通気開口11gを設けたことから、放熱部材8下方からの冷却風を筐体2内に流入することができる。自然対流により上昇する気流と同一方向に冷却風が流入することで流れを阻害することや、冷却後の温度が上昇した空気が再度冷却風として流入することを防ぐことができ、効率良く冷却風を取り込んで流入温度を低くできるとともに、冷却風量が増え冷却効率も高まる。   The heat diffusion member 5 is formed with air vent openings 11g radially from the center. The ventilation opening 11g is an opening through which air can flow between two adjacent heat radiating members 8. Since such a ventilation opening 11g is provided, the cooling air from below the heat radiating member 8 can flow into the housing 2. Cooling air can flow in the same direction as the air flow rising by natural convection, preventing the flow, and preventing the air whose temperature has risen after cooling from flowing again as cooling air. The intake air temperature can be lowered by reducing the amount of cooling air, and the cooling efficiency is increased.

また、熱拡散部材5の中心からみた径方向に沿う通気開口11gの長さ寸法は、放熱部材8の長手方向寸法と同じである。このため、熱拡散部材5の中央側から外周側まで並ぶ複数の放熱部10に、通気開口11gからの冷却風が満遍なく供給される。その結果、冷却効率を高めることができる。なお、熱拡散部材5の中心からみた径方向に沿う通気開口11gの長さ寸法を、放熱部材8の長手方向寸法よりも大きくしてもよい。   Further, the length dimension of the ventilation opening 11 g along the radial direction as viewed from the center of the heat diffusing member 5 is the same as the length dimension of the heat radiating member 8. For this reason, the cooling air from the ventilation openings 11 g is uniformly supplied to the plurality of heat radiating portions 10 arranged from the center side to the outer peripheral side of the heat diffusing member 5. As a result, the cooling efficiency can be increased. Note that the length dimension of the ventilation opening 11 g along the radial direction viewed from the center of the heat diffusing member 5 may be larger than the length dimension of the heat radiating member 8.

また、実施の形態1によれば、図7に示すように通気開口11gの縁と放熱部10の表面とが段差無く揃っているので、放熱部10と通気開口11gとが近接している。これにより通気開口11gから流入した冷却風が放熱部10に直ぐに接触する。よって放熱部10の外側面の冷却効率を高めるとともに、放熱部10間の隙間への冷却風の流入も容易となり、放熱部10の内側面の冷却効率を高めることができる。なお、実施の形態では、放熱部材8の両脇において、それぞれ2つの放熱部10が通気開口11gの縁と段差無く揃っている。しかしながら本発明はこれに限られるものではない。少なくとも1つの放熱部10の表面が通気開口11gの縁と段差無く揃うようにすれば、その少なくとも1つの放熱部10については通気開口11gからの冷却風を直に接触させることができる。   Further, according to the first embodiment, as shown in FIG. 7, since the edge of the ventilation opening 11g and the surface of the heat radiating part 10 are aligned without any step, the heat radiating part 10 and the ventilation opening 11g are close to each other. Thereby, the cooling air flowing in from the ventilation opening 11g immediately comes into contact with the heat radiating portion 10. Therefore, the cooling efficiency of the outer side surface of the heat radiating unit 10 can be increased, and the cooling air can be easily introduced into the gap between the heat radiating units 10, so that the cooling efficiency of the inner side surface of the heat radiating unit 10 can be increased. In the embodiment, on both sides of the heat radiating member 8, the two heat radiating portions 10 are aligned with the edge of the ventilation opening 11g without any step. However, the present invention is not limited to this. If the surface of at least one heat radiating part 10 is aligned with the edge of the ventilation opening 11g without a step, the cooling air from the ventilation opening 11g can be brought into direct contact with the at least one heat radiating part 10.

また、図13〜15の変形例に示したように、熱拡散部材55の平面視において、放熱部材8の外郭線Pよりも内側に凹む切欠部61aおよび切欠部61bを有する通気開口61を設けてもよい。この変形例によれば、外郭線Pより内側に位置する放熱部10の外側面に風が当たりやすくなり、冷却効率が高まる。これとともに、通気開口61の縁が放熱部10の間の隙間とも近接することになり、向かい合う放熱部10の間への冷却風の流入が更に容易となり、放熱部10の内側面の冷却効率を高めることもできる。   Further, as shown in the modified examples of FIGS. 13 to 15, in the plan view of the heat diffusing member 55, a ventilation opening 61 having a notch portion 61 a and a notch portion 61 b that are recessed inwardly from the outline P of the heat radiating member 8 is provided. May be. According to this modification, it is easy for the wind to hit the outer surface of the heat radiating portion 10 located inside the outline P, and the cooling efficiency is increased. At the same time, the edge of the ventilation opening 61 is also close to the gap between the heat radiating portions 10, so that it becomes easier to flow cooling air between the heat radiating portions 10 facing each other, and the cooling efficiency of the inner surface of the heat radiating portion 10 is improved. It can also be increased.

また、本実施の形態では、発光手段13側を覆うように熱拡散部材5に透光体7および反射体6を重ねたときに、透光体7および反射体6が通気開口11gにはみ出さず、かつ熱拡散部材5の一部が露出するように透光体7および反射体6を熱拡散部材5よりも小さくした。これにより、筐体2への冷却風の流入を阻害せず、冷却効率を高めることができる。これとともに、通気開口11gから流入する冷却風が熱拡散部材5の露出した部分に接触することで、熱拡散部材5が放熱フィンとして機能する。これにより冷却効率を高めることができる。   Further, in the present embodiment, when the light transmissive member 7 and the reflector 6 are stacked on the heat diffusing member 5 so as to cover the light emitting means 13 side, the light transmissive member 7 and the reflector 6 protrude from the ventilation opening 11g. The light transmissive member 7 and the reflector 6 are made smaller than the heat diffusing member 5 so that a part of the heat diffusing member 5 is exposed. As a result, the cooling efficiency can be improved without impeding the flow of cooling air into the housing 2. At the same time, the cooling air flowing in from the ventilation opening 11g contacts the exposed portion of the heat diffusing member 5, so that the heat diffusing member 5 functions as a radiating fin. Thereby, cooling efficiency can be improved.

また、照明装置1は防汚部材4a〜4eを備え、最も下方の防汚部材4aは熱拡散部材5とともに放熱部材8を挟む。防汚部材4a〜4eは互いの間に通風可能な通風隙間15を備えており、この通風隙間15が複数配置される。防汚部材4a〜4dの面内に通風可能な通気開口11a〜11dが設けられている。防汚部材4bの外周側が、その直下の通気開口11aの外側の一部に被さる。同様に、防汚部材4c、4dそれぞれの外周側が、その直下の通気開口11b、11cの外側の一部に被さる。このようにすることで、熱拡散部材5及び放熱部材8からの冷却に伴う上昇気流F1〜F4を、防汚部材4a〜4eの間に設けた通風隙間15に導くことができる。本実施の形態にかかる通風隙間15は、図6における断面B1〜E1の高さ位置にそれぞれ設けられた合計4つの環状の隙間である。このように多段に設けられた環状の通風隙間15に、筐体2内部の排気を分割して流すことができる。   The lighting device 1 includes antifouling members 4 a to 4 e, and the lowermost antifouling member 4 a sandwiches the heat radiating member 8 together with the heat diffusing member 5. The antifouling members 4a to 4e are provided with ventilation gaps 15 that allow ventilation between them, and a plurality of ventilation gaps 15 are arranged. Ventilation openings 11a to 11d that allow ventilation are provided in the surfaces of the antifouling members 4a to 4d. The outer peripheral side of the antifouling member 4b covers a part of the outside of the ventilation opening 11a immediately below the antifouling member 4b. Similarly, the outer peripheral side of each of the antifouling members 4c and 4d covers a part of the outside of the ventilation openings 11b and 11c immediately below the antifouling members 4c and 4d. By doing in this way, the updraft F1-F4 accompanying the cooling from the thermal-diffusion member 5 and the heat radiating member 8 can be guide | induced to the ventilation gap 15 provided between the antifouling members 4a-4e. The ventilation gap 15 according to the present embodiment is a total of four annular gaps respectively provided at the height positions of the cross sections B1 to E1 in FIG. In this way, the exhaust inside the housing 2 can be divided and flowed into the annular ventilation gap 15 provided in multiple stages.

互いに隣接する二つの防汚部材4e、4dを比較すると、上方の防汚部材4eの縁が下方の防汚部材4dの通気開口11dの外周よりも、外側に突出している。その結果、図6に示すように、防汚部材4d、4eの間に、重なり4fが設けられている。この関係は、防汚部材4a〜4eのうち互いに隣接する二つの間で成り立っている。
重なり4fがあることで、防汚部材4eの上方から落下してくる塵埃が、防汚部材4dの通気開口11dに入ることを抑制でき、その塵埃が筐体2内の放熱部材8へ付着するのを抑制することができる。その結果、経年変化による冷却効率低下を軽減することができ、長期的に安定した性能が得られ照明装置1の製品寿命を長くすることができる。
When the two antifouling members 4e and 4d adjacent to each other are compared, the edge of the upper antifouling member 4e protrudes outward from the outer periphery of the ventilation opening 11d of the lower antifouling member 4d. As a result, as shown in FIG. 6, an overlap 4f is provided between the antifouling members 4d and 4e. This relationship is established between two adjacent antifouling members 4a to 4e.
Due to the overlap 4f, dust falling from above the antifouling member 4e can be prevented from entering the ventilation opening 11d of the antifouling member 4d, and the dust adheres to the heat radiating member 8 in the housing 2. Can be suppressed. As a result, a decrease in cooling efficiency due to secular change can be reduced, stable performance can be obtained in the long term, and the product life of the lighting device 1 can be extended.

防汚部材4b〜4dの支持部12b〜12dは、熱拡散部材5の平面視において、防汚部材4aの支持部12aの上に重なるように設けられている。よって、支持部12b〜12dは、熱拡散部材5の平面視において、通気開口11aには重ならない。これにより、放熱部材8からの自然対流による冷却風の流れおよび複数の防汚部材4a〜4dを通過する排気の流れが妨げられず、少ない圧力損失で筐体2外への排気を行うことができる。よって、冷却効率を高めることができる。   The support parts 12b to 12d of the antifouling members 4b to 4d are provided so as to overlap the support part 12a of the antifouling member 4a in the plan view of the heat diffusion member 5. Therefore, the support portions 12 b to 12 d do not overlap the ventilation opening 11 a in the plan view of the heat diffusing member 5. Thereby, the flow of the cooling air by the natural convection from the heat radiating member 8 and the flow of the exhaust gas passing through the plurality of antifouling members 4a to 4d are not hindered, and the exhaust to the outside of the housing 2 can be performed with a small pressure loss. it can. Therefore, the cooling efficiency can be increased.

発光手段13は、チップ・オン・ボードタイプ(COB)のLED光源である。熱拡散部材5をはさんで放熱部材8と発光手段13を近接して配置することができる。また、発熱体である発光手段13を熱拡散部材5に分散配置することで、筐体2内で冷却風の流れを分散させて圧力損失を低下させ、冷却風量を増し、冷却効率を高めることができる。また、発光手段13の搭載個数および配置の自由度が高く、適切な光束クラス、表面発光強度分布、および良好な意匠を得ることができる。   The light emitting means 13 is a chip-on-board type (COB) LED light source. The heat radiating member 8 and the light emitting means 13 can be arranged close to each other with the heat diffusing member 5 interposed therebetween. In addition, by dispersing the light emitting means 13 as a heating element in the heat diffusing member 5, the flow of cooling air is dispersed in the housing 2 to reduce pressure loss, increase the amount of cooling air, and increase the cooling efficiency. Can do. Further, the number of light emitting means 13 mounted and the degree of freedom of arrangement are high, and an appropriate luminous flux class, surface light emission intensity distribution, and good design can be obtained.

実施の形態2.
図16〜26を用いて、実施の形態2にかかる照明装置101を説明する。以下の説明では、実施の形態1と異なる部分を中心に説明する。図16は、本発明の実施の形態2にかかる照明装置101の下方斜視図である。図16からわかるように、照明装置101は照明装置1と異なる熱拡散部材105および反射体106を備えている。熱拡散部材105が、中心から外周に向かって放射状に設けられた6つの通気開口111gに加えて、中央に通気開口111hを備えている。反射体106も、中央に通気開口111iを備えている。
Embodiment 2. FIG.
The illuminating device 101 concerning Embodiment 2 is demonstrated using FIGS. In the following description, the description will focus on parts different from the first embodiment. FIG. 16 is a lower perspective view of the illumination device 101 according to the second embodiment of the present invention. As can be seen from FIG. 16, the lighting device 101 includes a heat diffusing member 105 and a reflector 106 that are different from those of the lighting device 1. The heat diffusion member 105 includes a ventilation opening 111h at the center in addition to the six ventilation openings 111g provided radially from the center toward the outer periphery. The reflector 106 also has a ventilation opening 111i in the center.

図17は、実施の形態2にかかる照明装置101全体を示す上方斜視図である。防汚部材104は、熱拡散部材105の側の端部から上方端部に向かって徐々に径が小さくなる傾斜曲面を備えている。傾斜曲面の防汚部材104には通風可能な換気口117が設けられ、換気口117は庇部118に覆われている。庇部118により、防汚部材104の上方からの換気口117への塵埃の侵入を抑制している。   FIG. 17 is an upper perspective view illustrating the entire illumination device 101 according to the second embodiment. The antifouling member 104 has an inclined curved surface whose diameter gradually decreases from the end on the heat diffusing member 105 side toward the upper end. The slanted curved antifouling member 104 is provided with a ventilation port 117 through which ventilation is possible, and the ventilation port 117 is covered with a flange 118. The flange 118 suppresses the intrusion of dust from above the antifouling member 104 into the ventilation port 117.

図18は、実施の形態2にかかる照明装置101の分解斜視図である。実施の形態2においては、熱拡散部材105に6個の発光手段13が取り付けられる。複数の発光手段13は、熱拡散部材105の中心から放射状かつ等間隔に設けられている。複数の発光手段13は、熱拡散部材105の中心まわりに等角度ずつ回転させて配置されている。これにより、良好な配光を得られるようになっている。また、熱拡散部材105の中央側に寄せて、筐体2の側面からは一定距離だけ離している。これにより、筐体2の周辺での多重反射成分に伴う器具効率の低下を抑制するとともに、配光特性の自由度を高めている。   FIG. 18 is an exploded perspective view of the lighting apparatus 101 according to the second embodiment. In the second embodiment, six light emitting means 13 are attached to the heat diffusing member 105. The plurality of light emitting means 13 are provided radially and equidistantly from the center of the thermal diffusion member 105. The plurality of light emitting means 13 are arranged by rotating at equal angles around the center of the heat diffusing member 105. As a result, a good light distribution can be obtained. In addition, the heat diffusing member 105 is separated from the side surface of the housing 2 by a certain distance toward the center side. Thereby, while suppressing the fall of the instrument efficiency accompanying the multiple reflection component in the periphery of the housing | casing 2, the freedom degree of a light distribution characteristic is raised.

発光手段13には、実施の形態1と同様にCOB光源が用いられている。照明装置101は、6個の発光手段13を備え、それぞれの発光手段13の冷却を担う放熱部材108を設けている。従って合計で6個の放熱部材108を備えている。しかしながら本発明はこれに限られない。発光手段13と放熱部材108以外は同じ構成で、発光手段13と放熱部材108を各3個として1個置きに間引いて放射状に配置してもよい。このようにすることで比較的均等な表面発光強度分布を得ながら、約半分の光束クラスの照明装置を構成してもよい。あるいは、発光手段13と放熱部材108を各2個としてI字状に配置してもよい。これにより比較的均等な表面発光強度分布を得ながら約1/3の光束クラスの照明装置を構成することができる。このように、実施の形態2によれば、部品を共通化および標準化しながら複数の光束クラスの照明装置をラインアップでき、金型等の製造設備への投資を抑制でき、照明装置を低コスト化できる。   As the light emitting means 13, a COB light source is used as in the first embodiment. The illuminating device 101 includes six light emitting means 13 and a heat radiating member 108 for cooling each light emitting means 13. Therefore, a total of six heat dissipating members 108 are provided. However, the present invention is not limited to this. Except for the light emitting means 13 and the heat radiating member 108, the same structure may be used, and the light emitting means 13 and the heat radiating member 108 may be arranged in a radial pattern by thinning out every other three. In this way, an illumination device with about half the luminous flux class may be configured while obtaining a relatively uniform surface emission intensity distribution. Or you may arrange | position the light emission means 13 and the heat radiating member 108 in I shape as two each. As a result, it is possible to construct an illumination device having a luminous flux class of about 1/3 while obtaining a relatively uniform surface emission intensity distribution. Thus, according to the second embodiment, it is possible to line up lighting devices of a plurality of luminous flux classes while standardizing and standardizing parts, and it is possible to suppress investment in manufacturing equipment such as molds, and to reduce the cost of the lighting device. Can be

図19は、放熱部材108の三面図と斜視図を示す。図19(a)は放熱部材108の上方斜視図であり、図19(b)〜(d)は放熱部材108の三面図である。放熱部材108は、実施の形態1の放熱部材8と同様に、熱伝導良好なアルミニウム合金や銅等の金属で形成される。複数の放熱部110は受熱部109の両脇に平行に並び、受熱部109を挟んで対向している。放熱部材108は、コの字形の放熱ユニット108aに区分することができる。コの字形の放熱ユニット108aは、受熱部109を介して複数個連なっている。   FIG. 19 shows a trihedral view and a perspective view of the heat dissipation member 108. FIG. 19A is an upper perspective view of the heat dissipation member 108, and FIGS. 19B to 19D are three views of the heat dissipation member 108. The heat radiating member 108 is formed of a metal such as an aluminum alloy or copper having good thermal conductivity, similarly to the heat radiating member 8 of the first embodiment. The plurality of heat radiating portions 110 are arranged in parallel on both sides of the heat receiving portion 109 and face each other with the heat receiving portion 109 interposed therebetween. The heat dissipating member 108 can be divided into U-shaped heat dissipating units 108a. A plurality of U-shaped heat dissipation units 108 a are connected via a heat receiving portion 109.

隣接する放熱ユニット108aは、次のようにして連結している。すなわち、1つの放熱ユニット108aが有する互いに対向する放熱部110の中央線CHを基準にして、一方向に他の放熱ユニット108aが間隔N2ずつ平行にずれている。同様に、更に他の放熱ユニット108aが、同じ方向に平行にずれている。   Adjacent heat dissipating units 108a are connected as follows. That is, the other heat radiating unit 108a is shifted in parallel by one interval N2 in one direction with reference to the center line CH of the heat radiating portions 110 facing each other included in one heat radiating unit 108a. Similarly, another heat radiating unit 108a is shifted in parallel in the same direction.

図19(b)に示す破線Pは、平面視における放熱部材108の外郭線Pである。外郭線Pは、平面視における放熱部材108の長手方向寸法線と短手方向寸法線とからなる長方形の線である。図19(b)は、受熱部109の平面視である。図19(b)からわかるように、外郭線Pと放熱部110それぞれの表面は平行とはならない。放熱部110それぞれの表面は、図19(b)の平面視で左回りに傾いている。   A broken line P shown in FIG. 19B is an outline P of the heat dissipation member 108 in plan view. The outline P is a rectangular line composed of a longitudinal dimension line and a lateral dimension line of the heat dissipation member 108 in plan view. FIG. 19B is a plan view of the heat receiving unit 109. As can be seen from FIG. 19B, the outer surface P and the surface of the heat radiating portion 110 are not parallel to each other. Each surface of the heat radiating part 110 is inclined counterclockwise in a plan view of FIG.

放熱部材108を実施の形態1の放熱部材8と比較すると、図19(b)の上面視において、実施の形態1においては放熱部10の間の隙間が少ない。長手方向の一側面から隣り合う放熱部材8の間へ冷却風が流れるには放熱部10を迂回して蛇行しながら冷風が流れる必要がある。これに対し、実施の形態2の放熱部材108においては、放熱部110が傾斜して配置されるため、直線的に冷却風が流入可能な通風路が形成される。これにより、対向する放熱部110の間への冷却風流入が容易となり、放熱部110の内側の冷却効率をより高めることができる。また、全ての放熱部110が外郭線Pと交わり、周囲の冷却風との接触が均一化される。このため、複数の放熱部110の冷却環境が均一化される。その結果、突出して冷却効率の低い放熱部110が発生することを抑制でき、冷却効率が高まる。   Comparing the heat radiating member 108 with the heat radiating member 8 of the first embodiment, the gap between the heat radiating portions 10 is less in the first embodiment in the top view of FIG. In order for the cooling air to flow from one side surface in the longitudinal direction to between the adjacent heat radiating members 8, it is necessary for the cold air to flow while meandering around the heat radiating portion 10. On the other hand, in the heat radiating member 108 of the second embodiment, since the heat radiating portion 110 is inclined, a ventilation path through which cooling air can flow linearly is formed. Thereby, the cooling air inflow between the opposing heat radiating portions 110 is facilitated, and the cooling efficiency inside the heat radiating portion 110 can be further increased. Moreover, all the heat radiating parts 110 intersect with the outline P, and the contact with the surrounding cooling air is made uniform. For this reason, the cooling environment of the several thermal radiation part 110 is equalized. As a result, it can suppress that the thermal radiation part 110 which protrudes and has low cooling efficiency can be suppressed, and cooling efficiency increases.

図19(b)のように放熱部材108を平面視したときに、長手方向中央線CLに対して、それぞれの放熱部110が45度ずつ回転している。図19(c)の正面視および図19(d)にある側面視でこれを比較してみる。そうすると、1つの放熱部110が、図19(c)のように正面から見ても、図19(d)のように側面から見ても、ともに45度だけ紙面奥行き方向に回転している。従って、正面視でみた放熱部110それぞれの幅W2と、正面視でみた放熱部110それぞれの幅W3が、同じとなる。正面視および側面視において放熱部110の高さは同じなので、正面視および側面視において1つ1つの放熱部110の投影面積が等しくなる。その結果、1つの放熱部110単位でみたときに、正面視方向および側面視方向どちらの方向から流入する冷却風に対しても、等しく熱伝達がおこなわれる。放熱部材108はこのような特徴を有しているので、配置に方向性の制約が少なく実装レイアウトの自由度が高まり、意匠性および配光特性を高める効果がある。   When the heat dissipating member 108 is viewed in plan as shown in FIG. 19B, each heat dissipating part 110 rotates 45 degrees with respect to the longitudinal center line CL. Compare this with the front view of FIG. 19 (c) and the side view of FIG. 19 (d). Then, one heat radiating section 110 is rotated in the depth direction of the paper by 45 degrees both when viewed from the front as shown in FIG. 19C and when viewed from the side as shown in FIG. Therefore, the width W2 of each heat radiation part 110 viewed from the front and the width W3 of each heat radiation part 110 viewed from the front are the same. Since the height of the heat radiation part 110 is the same in the front view and the side view, the projected area of each heat radiation part 110 is equal in the front view and the side view. As a result, when viewed in units of one heat radiating section 110, heat transfer is equally performed for cooling air flowing in from either the front view direction or the side view direction. Since the heat dissipating member 108 has such a feature, there is an effect of improving designability and light distribution characteristics with less restrictions on the direction of arrangement and increasing the degree of freedom of mounting layout.

図19(b)に示すように、複数の放熱部110は、間隔N1、N2、N3を置いて並んでいる。説明の便宜上、図19(b)に示すように複数の放熱部110のうち特定の1つを放熱部110aと称する。図19(b)において、放熱部110aを基準に他の放熱部110の位置関係を説明する。先ず、中央線CH上に間隔N3をはさんで放熱部110aと他の放熱部110bが平行に配置されている。また、放熱部110aから見て、一段ずれたうえで、間隔N1を置いて更に他の放熱部110cが位置している。さらに、放熱部110cの反対側にも、一段ずれたうえで、間隔N2を置いて更に他の放熱部110dが位置している。このような配置関係により、図19(b)の紙面上下左右方向、すなわち図19(b)に併記したXY直交座標のX軸方向およびY軸方向に見て、それぞれの放熱部110が等間隔で整列する。このようにすることで、複数の放熱部110での冷却がより均一になされる。その結果、放熱部材108の冷却効率を高めることができる。   As shown in FIG. 19B, the plurality of heat dissipating units 110 are arranged at intervals N1, N2, and N3. For convenience of explanation, as shown in FIG. 19B, a specific one of the plurality of heat radiating portions 110 is referred to as a heat radiating portion 110a. In FIG. 19B, the positional relationship of the other heat radiating part 110 will be described with reference to the heat radiating part 110a. First, the heat dissipating part 110a and the other heat dissipating part 110b are arranged in parallel across the interval N3 on the center line CH. In addition, another heat radiating portion 110c is located at an interval N1 after being shifted by one step as viewed from the heat radiating portion 110a. Further, another heat radiating part 110d is located on the opposite side of the heat radiating part 110c with a gap N2 after being shifted by one step. With such an arrangement relationship, the heat radiating portions 110 are equally spaced when viewed in the vertical and horizontal directions on the plane of FIG. 19B, that is, in the X-axis direction and the Y-axis direction of the XY orthogonal coordinates shown in FIG. 19B. Align with. By doing in this way, the cooling in the some thermal radiation part 110 is made more uniform. As a result, the cooling efficiency of the heat dissipation member 108 can be increased.

また、放熱部材108の外郭線Pが長方形なので、熱拡散部材105或いは他の熱拡散部材上における実装レイアウトの自由度が高まる。このため、複数の放熱部材108を簡単に所望の密度で配置することが容易となる。その結果、必要な冷却効率を満たすのが容易になるとともに、意匠性および配光特性を高めることができる。   Further, since the outline P of the heat radiating member 108 is rectangular, the degree of freedom of the mounting layout on the heat diffusing member 105 or another heat diffusing member is increased. For this reason, it becomes easy to arrange a plurality of heat dissipation members 108 at a desired density. As a result, it becomes easy to satisfy the required cooling efficiency, and the design and light distribution characteristics can be improved.

図20は、放熱部材108の展開図を示す。放熱部材108は、その外形が略平行四辺形の1枚の板材をプレス加工等することで製造される。これにより、高い歩留まりかつ低コストで放熱部材108を製造することができる。切り目および折り目については特に符号を付さないが、実施の形態1において図5で説明したのと同様に、切り目の数に応じて放熱部の数が決まり、折り目の位置に応じて各放熱部の長さ寸法が決まる。   FIG. 20 is a development view of the heat dissipation member 108. The heat dissipating member 108 is manufactured by pressing one plate material having an outer shape that is substantially a parallelogram. Thereby, the heat radiating member 108 can be manufactured with high yield and low cost. The cut lines and the fold lines are not particularly labeled, but the number of heat radiating portions is determined according to the number of cut lines, and each heat radiating section is determined according to the position of the fold lines, as described in the first embodiment with reference to FIG. The length dimension is determined.

図21は照明装置101の中央側面断面図を示す。換気口117は、防汚部材104の外周側から中央部にかけて等間隔で複数配置されている。防汚部材104の外周側から中央部までの複数の位置に換気口117を設けることで、外周側のみではなく中央部まで冷却風の排気風路を確保することができる。その結果、全ての放熱部110が冷却に寄与できるようにして、冷却効率を高めている。   FIG. 21 shows a central side cross-sectional view of the lighting device 101. A plurality of ventilation openings 117 are arranged at equal intervals from the outer peripheral side of the antifouling member 104 to the center. By providing the ventilation ports 117 at a plurality of positions from the outer peripheral side to the central part of the antifouling member 104, it is possible to secure an exhaust air path for cooling air not only to the outer peripheral side but also to the central part. As a result, all the heat radiating portions 110 can contribute to cooling, thereby improving the cooling efficiency.

図22は照明装置101の上面図を示す。図22には、破線により紙面奥側に位置する複数の放熱部材108を図示している。防汚部材104の上面視で、換気口117それぞれは、少なくとも1つの放熱部110と重なるように配置されている。これにより、放熱部110から上昇する冷却風をスムーズに排気でき、冷却効率を高めることができる。   FIG. 22 shows a top view of the lighting device 101. In FIG. 22, a plurality of heat radiating members 108 located on the back side of the drawing are illustrated by broken lines. Each of the ventilation openings 117 is disposed so as to overlap with at least one heat radiating part 110 when the antifouling member 104 is viewed from above. Thereby, the cooling air rising from the heat radiation part 110 can be exhausted smoothly, and the cooling efficiency can be increased.

図23は照明装置101を図21の断面A2の位置でスライスした上面断面図を示す。図23に示す仮想円Qは、熱拡散部材105と中心を共通とする円を仮想的に描いたものである。熱拡散部材105の受熱部109を配置する面を見下ろした平面視において、複数の放熱部材108が熱拡散部材105の中心に向かってねじれるように配置されている。すなわち、6つの放熱部材108それぞれの長手方向中央線CLは、仮想円Qに接するように、等しい角度を置いて、熱拡散部材105の面内で交差している。具体的には、実施の形態2では、60度間隔で6個の長手方向中央線CLが並ぶように、6つの放熱部材108を配置している。このような配置によれば、実施の形態1のように熱拡散部材5の中心から放射状に放熱部材8を配置する場合と比べて、放熱部材108の長手方向寸法を大きくすることができる。その結果、放熱部材108それぞれが高い冷却効率を備えることができる。なお、本実施の形態では仮想円Qは熱拡散部材105と中心を共通としており、熱拡散部材105の中心から対称に放熱部材108が延びている。しかしながら、本発明は必ずしもこれに限られない。熱拡散部材105の面内における中心以外のいずれかの箇所に仮想円の中心を設定してもよい。   FIG. 23 is a top cross-sectional view of the lighting device 101 sliced at the position of the cross-section A2 in FIG. A virtual circle Q illustrated in FIG. 23 is a virtual depiction of a circle having a center in common with the thermal diffusion member 105. The plurality of heat radiating members 108 are arranged so as to be twisted toward the center of the heat diffusing member 105 in a plan view looking down on the surface on which the heat receiving portion 109 of the heat diffusing member 105 is arranged. That is, the longitudinal center line CL of each of the six heat radiating members 108 intersects in the plane of the heat diffusing member 105 at an equal angle so as to contact the virtual circle Q. Specifically, in the second embodiment, the six heat radiating members 108 are arranged so that six longitudinal center lines CL are arranged at intervals of 60 degrees. According to such an arrangement, the longitudinal dimension of the heat radiating member 108 can be increased as compared with the case where the heat radiating member 8 is arranged radially from the center of the heat diffusing member 5 as in the first embodiment. As a result, each of the heat dissipation members 108 can have high cooling efficiency. In this embodiment, the virtual circle Q has the same center as that of the heat diffusing member 105, and the heat radiating member 108 extends symmetrically from the center of the heat diffusing member 105. However, the present invention is not necessarily limited to this. The center of the virtual circle may be set at any location other than the center in the plane of the heat diffusion member 105.

実施の形態2においては、それぞれの通気開口111gの縁と放熱部材108の外郭線Pの長辺とが重なるように、放熱部材108の外郭線Pの2つの長辺に沿って通気開口111gの縁が設けられている。これにより、放熱部110と通気開口111gを近接させ、冷却効率を高めている。しかし、本発明はこれに限られない。   In the second embodiment, the ventilation openings 111g are formed along the two long sides of the outline P of the heat radiating member 108 so that the edges of the respective ventilation openings 111g and the long sides of the outline P of the heat radiating member 108 overlap. An edge is provided. Thereby, the thermal radiation part 110 and the ventilation opening 111g are made to adjoin, and the cooling efficiency is improved. However, the present invention is not limited to this.

図24〜26は、実施の形態2の変形例にかかる照明装置151を示す図である。図24は照明装置151の下方斜視図であり、図25は照明装置151の下面図である。図26は、図21の断面A2位置に相当する位置で照明装置151をスライスした上面断面図である。照明装置151は、熱拡散部材155および反射体156を備えている。図25に示すように、熱拡散部材155の平面視において、放熱部材108の外郭線Pよりも内側に凹む切欠部161a〜161dを有する通気開口161を設けてもよい。これにより、外郭線Pより内側に配置される放熱部110の外側面の冷却効率が高まるとともに、複数の放熱部110の間と通気開口161がより近接する。これにより冷却風の流入がより容易となり、放熱部110の内側面の冷却効率が高まり、発光手段13の発光効率が高まる。また、同じ冷却効率を実現するために必要な放熱部110の面積を小さくでき、より低コストで軽量な照明装置151を得ることができる。   FIGS. 24-26 is a figure which shows the illuminating device 151 concerning the modification of Embodiment 2. FIGS. FIG. 24 is a lower perspective view of the lighting device 151, and FIG. 25 is a bottom view of the lighting device 151. FIG. 26 is a top sectional view obtained by slicing the lighting device 151 at a position corresponding to the position of the section A2 in FIG. The illumination device 151 includes a heat diffusion member 155 and a reflector 156. As shown in FIG. 25, in the plan view of the heat diffusing member 155, a ventilation opening 161 having notches 161a to 161d recessed inward from the outline P of the heat radiating member 108 may be provided. Thereby, the cooling efficiency of the outer surface of the heat radiating part 110 disposed inside the outline P is increased, and the ventilation openings 161 are closer to each other between the plurality of heat radiating parts 110. Thereby, inflow of cooling air becomes easier, the cooling efficiency of the inner surface of the heat radiating part 110 increases, and the light emission efficiency of the light emitting means 13 increases. Moreover, the area of the heat radiation part 110 required in order to implement | achieve the same cooling efficiency can be made small, and the illuminating device 151 lightweight at lower cost can be obtained.

以上説明した実施の形態2にかかる照明装置101、151によれば、放熱部材108は複数の放熱ユニット108aを備え、1つの放熱ユニット108aが有する互いに対向する放熱部110の中央線CHを基準にして、一方向に向かって他の複数の放熱ユニット108aが間隔N2ずつ平行にずれている。これにより、側面からの冷却風の通気性が高まるとともに、平面視した放熱部材108の外郭線Pが全ての放熱部110と交差することで、周囲の冷却風による冷却が概ね均等になる。これにより冷却効率が高まる。   According to the lighting devices 101 and 151 according to the second embodiment described above, the heat radiating member 108 includes a plurality of heat radiating units 108a, and the center line CH of the heat radiating portions 110 facing each other included in one heat radiating unit 108a is used as a reference. Thus, the other plurality of heat dissipating units 108a are shifted in parallel by one interval N2 in one direction. Thereby, the air permeability of the cooling air from the side surface is enhanced, and the outline P of the heat radiating member 108 in plan view intersects with all the heat radiating portions 110, so that the cooling by the surrounding cooling air becomes substantially uniform. This increases the cooling efficiency.

放熱部材108は、図19(b)のように受熱部109の平面視で、長手方向中央線CLに対して、それぞれの放熱部110が45度ずつ傾けられている。これにより配置に方向性の制約が少なく実装レイアウトの自由度が高まり、意匠性および配光特性を高める効果がある。   In the heat dissipating member 108, as shown in FIG. 19B, each heat dissipating part 110 is inclined 45 degrees with respect to the longitudinal center line CL in a plan view of the heat receiving part 109. As a result, there are few restrictions on the orientation of the arrangement, and the degree of freedom of the mounting layout is increased, which has the effect of improving the design and light distribution characteristics.

図19(b)の紙面上下左右方向、すなわち図19(b)に併記したXY直交座標のX軸方向およびY軸方向に見て、それぞれの放熱部110が等間隔で整列する。このようにすることで、複数の放熱部110での冷却がより均一になされる。   When viewed in the vertical and horizontal directions in FIG. 19B, that is, in the X-axis direction and the Y-axis direction of the XY orthogonal coordinates shown in FIG. By doing in this way, the cooling in the some thermal radiation part 110 is made more uniform.

熱拡散部材105は、その中心を囲むように放射状に配置された2個の放熱部材108の間にそれぞれ設けられた複数の通気開口111gに加え、熱拡散部材105の中央部にも通気開口111hを備えている。仮に熱拡散部材105の中央部が塞がっていると、冷却風が流入しにくく熱がこもり冷却効率が低下し易い。本実施の形態によれば、通気開口111hにより、中央部に冷却風が供給され冷却効率が高まる。   In addition to the plurality of ventilation openings 111g provided between the two heat dissipating members 108 arranged radially so as to surround the center of the heat diffusion member 105, the heat diffusion member 105 also has a ventilation opening 111h in the central portion of the heat diffusion member 105. It has. If the central portion of the heat diffusing member 105 is blocked, it is difficult for the cooling air to flow in and heat is accumulated, and the cooling efficiency is likely to be reduced. According to the present embodiment, the cooling air is supplied to the central portion by the vent opening 111h and the cooling efficiency is increased.

図23に示すように、6つの放熱部材108それぞれの長手方向中央線CLは、熱拡散部材105と中心を共通とする仮想円Qに接するように、等しい角度を置いて、熱拡散部材105の面内で交差している。具体的には、実施の形態2では、60度間隔で6個の長手方向中央線CLが並ぶように、6つの放熱部材108を配置している。このような配置によれば、実施の形態1のように熱拡散部材5の中心から放射状に放熱部材8を配置する場合と比べて、放熱部材108の長手方向寸法を大きくすることができる。その結果、放熱部材108それぞれが高い冷却効率を備えることができる。   As shown in FIG. 23, the longitudinal center line CL of each of the six heat radiating members 108 is at an equal angle so as to contact the virtual circle Q having the center as the center of the heat diffusing member 105, and Cross in the plane. Specifically, in the second embodiment, the six heat radiating members 108 are arranged so that six longitudinal center lines CL are arranged at intervals of 60 degrees. According to such an arrangement, the longitudinal dimension of the heat radiating member 108 can be increased as compared with the case where the heat radiating member 8 is arranged radially from the center of the heat diffusing member 5 as in the first embodiment. As a result, each of the heat dissipation members 108 can have high cooling efficiency.

照明装置101が防汚部材104を備え、防汚部材104は放熱部材108を熱拡散部材105とともに挟む。防汚部材104は、熱拡散部材105の側の端部から上方端部に向かって徐々に径が小さくなる傾斜曲面を備えている。この傾斜曲面には、通風可能な換気口117が設けられるとともに、換気口117に庇部118が設けられている。これにより、防汚部材104の外周側から中心部にわたり冷却風の排気風路が設けられ、冷却効率が高まる。さらに、塵埃が筐体2の内部に侵入することを庇部118が防ぐことで、高い信頼性および長い製品寿命を得ることができる。   The lighting device 101 includes an antifouling member 104, and the antifouling member 104 sandwiches the heat radiating member 108 together with the heat diffusing member 105. The antifouling member 104 has an inclined curved surface whose diameter gradually decreases from the end on the heat diffusing member 105 side toward the upper end. The inclined curved surface is provided with a ventilation port 117 through which ventilation is possible, and a flange 118 is provided at the ventilation port 117. As a result, an exhaust air passage for cooling air is provided from the outer peripheral side of the antifouling member 104 to the central portion, and cooling efficiency is increased. Furthermore, since the collar part 118 prevents dust from entering the inside of the housing 2, high reliability and a long product life can be obtained.

防汚部材104を上面視したとき、換気口117それぞれは、少なくとも1つの放熱部110と重なるように配置されている。これにより、冷却風の排気がスムーズになされ、冷却効率を高めることができる。   When the antifouling member 104 is viewed from above, each ventilation port 117 is disposed so as to overlap with at least one heat radiating portion 110. Thereby, the cooling air is exhausted smoothly, and the cooling efficiency can be increased.

図22のごとく防汚部材104を上面視した場合に、複数の換気口117は、複数の通気開口111gの外側端部よりも熱拡散部材105の中央側に位置するように設けられている。これにより、熱拡散部材105の外側から中央側に向かう冷却風の流れが形成され、熱拡散部材105の中央側に位置する放熱部110に冷却風が接触しやすくなり、冷却効率が高まる。   When the antifouling member 104 is viewed from above as shown in FIG. 22, the plurality of ventilation ports 117 are provided so as to be located closer to the center side of the heat diffusion member 105 than the outer end portions of the plurality of ventilation openings 111 g. Thereby, a flow of cooling air from the outside of the heat diffusing member 105 toward the center side is formed, and the cooling air easily comes into contact with the heat radiating portion 110 located on the center side of the heat diffusing member 105, thereby improving the cooling efficiency.

実施の形態3.
図27〜35は、本発明の実施の形態3にかかる照明装置201を示す図である。以下、実施の形態1、2とは異なる部分を中心に、照明装置201を説明する。
Embodiment 3 FIG.
FIGS. 27-35 is a figure which shows the illuminating device 201 concerning Embodiment 3 of this invention. Hereinafter, the illumination device 201 will be described with a focus on the differences from the first and second embodiments.

図27は、本発明の実施の形態3にかかる照明装置201を示す下方斜視図である。図28は照明装置201を示す上方斜視図である。照明装置201は、防汚部材204を備えている。防汚部材204は、複数の防汚部材204a〜204fが隙間を置いて重ねられたものである。複数の防汚部材204a〜204fは互いに直径の異なる略円盤状の部材であり、通風可能な通風隙間15を開けつつ筐体2の一端に重ねて配置されている。また、複数の防汚部材204a〜204fは、その最上部に配置される防汚部材204fを除き、中央側に通気開口211a〜211eを備えている。通気開口211a〜211eと通風隙間15を介して、照明装置201の上方において、筐体2の内部と筐体2の外部とが通風可能に連通される。   FIG. 27 is a lower perspective view showing the illumination device 201 according to the third embodiment of the present invention. FIG. 28 is an upper perspective view showing the lighting device 201. The lighting device 201 includes an antifouling member 204. The antifouling member 204 is obtained by stacking a plurality of antifouling members 204a to 204f with a gap therebetween. The plurality of antifouling members 204a to 204f are substantially disk-shaped members having different diameters, and are arranged on one end of the housing 2 while opening a ventilation gap 15 that allows ventilation. Further, the plurality of antifouling members 204a to 204f are provided with ventilation openings 211a to 211e on the center side, except for the antifouling member 204f disposed at the uppermost part. Via the ventilation openings 211 a to 211 e and the ventilation gap 15, the interior of the housing 2 and the outside of the housing 2 are communicated with each other so as to allow ventilation.

防汚部材204と防汚部材4を比較すると、支持部12a〜12dと支持部212a〜212eの形状が互いに異なり、通気開口11a〜11dと通気開口211a〜211eとの形状が互いに異なっている。通気開口211aは、図35に示すように、放熱部材208の並びと同じく十字状に並ぶ長方形の開口である。通気開口211b〜211eは、その内角が90度の扇形である。防汚部材204における冷却風の流れおよび排気に関する動作および効果は、実施の形態1の防汚部材4とほぼ同様である。   When the antifouling member 204 and the antifouling member 4 are compared, the shapes of the support portions 12a to 12d and the support portions 212a to 212e are different from each other, and the shapes of the ventilation openings 11a to 11d and the ventilation openings 211a to 211e are different from each other. As shown in FIG. 35, the ventilation opening 211a is a rectangular opening arranged in a cross like the arrangement of the heat dissipation members 208. The ventilation openings 211b to 211e have a sector shape with an inner angle of 90 degrees. The operation and effect of the antifouling member 204 regarding the flow of cooling air and the exhaust are substantially the same as those of the antifouling member 4 of the first embodiment.

図29は、実施の形態3にかかる照明装置201の分解斜視図である。照明装置201では、5つの発光手段13が十字状に並べられて熱拡散部材205に接続されている。四隅の発光手段13の中央にも発光手段13が設けられているので、配光性を高めることができる。   FIG. 29 is an exploded perspective view of the illumination device 201 according to the third embodiment. In the illuminating device 201, five light emitting means 13 are arranged in a cross shape and connected to the heat diffusing member 205. Since the light emitting means 13 is also provided at the center of the light emitting means 13 at the four corners, the light distribution can be improved.

発光手段13は、熱拡散部材205の中央側に寄せて筐体2の側端面から離して配置されている。よって筐体2周辺での多重反射成分に伴う器具効率の低下を抑制するとともに、配光特性の自由度を高めている。なお、発光手段13には実施の形態1、2と同様にCOB光源が用いられている。   The light emitting means 13 is arranged close to the center side of the heat diffusing member 205 and away from the side end surface of the housing 2. Therefore, the reduction in the instrument efficiency accompanying the multiple reflection components around the housing 2 is suppressed, and the degree of freedom of the light distribution characteristics is increased. Note that a COB light source is used for the light emitting means 13 as in the first and second embodiments.

実施の形態3にかかる照明装置201は、5個の発光手段13を備え、4つの放熱部材208を備えている。しかしながら、発光手段13と放熱部材208以外は同じ構成で、例えば発光手段13を3個とし放熱部材208を2個としてI字状に並べてもよい。このようにすることで比較的均等な表面発光強度分布を得ながら、照明装置201と比較して約3/5の光束クラスの照明装置を構成することができる。あるいは、発光手段13と放熱部材208を各2個として、熱拡散部材205の中心を除いてI字状に配置してもよい。このようにすることで、比較的均等な表面発光強度分布を得ながら、照明装置201と比較して約2/5の光束クラスの照明装置を構成することができる。また、発光手段13を中心に1個配置して、2個の放熱部材208をI字状に配置してもよい。これにより、照明装置201と比較して約1/5の光束クラスの照明装置を構成することができる。このように、部品を共通化および標準化しながら複数の光束クラスの照明装置をラインアップでき、金型等の製造設備への投資を抑制でき照明装置を低コスト化できる。   The illumination device 201 according to the third embodiment includes five light emitting means 13 and four heat radiating members 208. However, the configuration other than the light emitting means 13 and the heat radiating member 208 may be the same. For example, three light emitting means 13 and two heat radiating members 208 may be arranged in an I shape. In this way, it is possible to configure an illumination device having a luminous flux class of about 3/5 as compared with the illumination device 201 while obtaining a relatively uniform surface emission intensity distribution. Alternatively, two light emitting means 13 and two heat radiating members 208 may be provided and arranged in an I shape except for the center of the heat diffusing member 205. By doing so, it is possible to configure an illumination device having a luminous flux class of about 2/5 as compared with the illumination device 201 while obtaining a relatively uniform surface emission intensity distribution. Alternatively, one light emitting means 13 may be arranged at the center, and two heat radiating members 208 may be arranged in an I shape. Thereby, it is possible to configure an illumination device having a luminous flux class of about 1/5 as compared with the illumination device 201. In this way, it is possible to line up lighting devices of a plurality of luminous flux classes while standardizing and standardizing parts, and it is possible to suppress investment in manufacturing equipment such as molds and reduce the cost of the lighting device.

図30は、放熱部材208の三面図と斜視図を示す。図30(a)は放熱部材208の上方斜視図であり、図30(b)〜(d)は放熱部材208の三面図である。放熱部材208は良好な熱伝導性を有する材料、具体的にはアルミニウム合金や銅等の金属で形成される。放熱部材208は、複数の放熱部210および受熱部209を備えている。放熱部材208は、放熱部材108とほぼ同じ構造を備えている。   FIG. 30 shows a three-side view and a perspective view of the heat dissipation member 208. 30A is an upper perspective view of the heat dissipation member 208, and FIGS. 30B to 30D are three views of the heat dissipation member 208. FIG. The heat radiating member 208 is formed of a material having good thermal conductivity, specifically, a metal such as an aluminum alloy or copper. The heat radiating member 208 includes a plurality of heat radiating portions 210 and heat receiving portions 209. The heat radiating member 208 has substantially the same structure as the heat radiating member 108.

図31は、放熱部材208の展開図を示す。放熱部材208は、その外形がほぼ平行四辺形である1枚の板材をプレス加工等することで製造することができる。このため、高い歩留まりかつ低コストで製造することができる。切り目および折り目については特に符号を付さないが、実施の形態1において図5で説明したのと同様に、切り目の数に応じて放熱部の数が決まり、折り目の位置に応じて各放熱部の長さ寸法が決まる。なお、放熱部210の先端を、図31の一点鎖線P3に示すように斜めにカットして平行四辺形としても良い。このようにすることで、更に材料の歩留まりを高めることができるとともに、放熱面積も増加して冷却効率を高めることができる。   FIG. 31 is a development view of the heat dissipation member 208. The heat dissipating member 208 can be manufactured by pressing one plate material whose outer shape is a substantially parallelogram. For this reason, it can manufacture with a high yield and low cost. The cut lines and the fold lines are not particularly labeled, but the number of heat radiating portions is determined according to the number of cut lines, and each heat radiating section is determined according to the position of the fold lines, as described in the first embodiment with reference to FIG. The length dimension is determined. The tip of the heat radiating section 210 may be cut obliquely as shown by a one-dot chain line P3 in FIG. 31 to form a parallelogram. By doing in this way, while being able to raise the yield of material further, the thermal radiation area can also be increased and cooling efficiency can be improved.

図32は、照明装置201をその中心軸に沿って切断した断面図である。図33〜35は、照明装置201をその高さ方向の異なる位置でスライスした断面を見下ろした断面図である。図33〜35の断面A3〜C3は、図32に示した断面A3〜C3が指し示す位置とそれぞれ対応している。   FIG. 32 is a cross-sectional view of the lighting device 201 taken along the central axis. 33 to 35 are cross-sectional views looking down at a cross section obtained by slicing the lighting device 201 at different positions in the height direction. 33 to 35 correspond to positions indicated by the cross sections A3 to C3 shown in FIG. 32, respectively.

図33(a)およびその中心を拡大した図33(b)に示すように、受熱部209の平面視において、放熱部材208の長手方向中央線CLは熱拡散部材205の中心点回りに等角度(本実施の形態では90度)を置いて並べられている。4つの放熱部材208は端部を互いに当接させて十字状に並び、それぞれの放熱部材208の放熱部210が近接する。四隅の発光手段13は放熱部材208の中央部付近に重なるように配置されている。中央に配置した発光手段13は複数の放熱部材208の端部と重なるように配置され、中央の発光手段13の発熱は複数の放熱部材に分散される。中央に発光手段13を配置することで配光特性を良好にするとともに器具効率を高めている。隣り合う放熱部材208の間には、中心角が90度の円弧形状をした通気開口211gが設けられている。   As shown in FIG. 33A and FIG. 33B in which the center is enlarged, in the plan view of the heat receiving portion 209, the longitudinal center line CL of the heat radiating member 208 is equiangular around the center point of the heat diffusing member 205. (90 degrees in this embodiment) are arranged side by side. The four heat dissipating members 208 are arranged in a cross shape with their end portions in contact with each other, and the heat dissipating portions 210 of the respective heat dissipating members 208 are close to each other. The light emitting means 13 at the four corners are arranged so as to overlap the vicinity of the central portion of the heat dissipation member 208. The light emitting means 13 disposed in the center is disposed so as to overlap the end portions of the plurality of heat radiating members 208, and the heat generated by the central light emitting means 13 is distributed to the plurality of heat radiating members. By arranging the light emitting means 13 in the center, the light distribution characteristics are improved and the efficiency of the appliance is increased. Between the adjacent heat radiating members 208, a vent opening 211g having an arc shape with a central angle of 90 degrees is provided.

実施の形態3によれば、図33(b)に示すように、複数の放熱部材208それぞれの長手方向中央線CLが、熱拡散部材205と中心を共通とする仮想円Q2に接しつつ等しい角度を置いて熱拡散部材205の面内で交差している。この等しい角度は、本実施の形態では90度である。これにより、4つの放熱部材208それぞれの端にある放熱部210が十字状に近接する。中央に配置した発光手段13の発熱をこの十字状に近接する合計4つの放熱部210に伝達することができ、中央の発光手段13も良好に冷却できる。また、四隅および中央の合計5つの発光手段13を設けることで配光特性と器具効率を高めることができる。なお、仮想円Q2の中心と熱拡散部材205の中心は必ずしも一致させなくともよい。   According to the third embodiment, as shown in FIG. 33 (b), the longitudinal center line CL of each of the plurality of heat dissipating members 208 is at an equal angle while in contact with the virtual circle Q2 having the center in common with the heat diffusion member 205 And intersect in the plane of the heat diffusion member 205. This equal angle is 90 degrees in the present embodiment. Thereby, the heat radiating part 210 at the end of each of the four heat radiating members 208 approaches in a cross shape. The heat generated by the light emitting means 13 disposed in the center can be transmitted to a total of four heat dissipating portions 210 close to the cross shape, and the central light emitting means 13 can be cooled well. Further, by providing a total of five light emitting means 13 at the four corners and the center, the light distribution characteristics and the instrument efficiency can be improved. Note that the center of the virtual circle Q2 and the center of the thermal diffusion member 205 do not necessarily have to coincide with each other.

実施の形態4.
図36〜43は、本発明の実施の形態4にかかる照明装置301を示す図である。以下、実施の形態1〜3とは異なる部分を中心に、照明装置301を説明する。
Embodiment 4 FIG.
36-43 is a figure which shows the illuminating device 301 concerning Embodiment 4 of this invention. Hereinafter, the illuminating device 301 is demonstrated centering on a different part from Embodiment 1-3.

図36は、本発明の実施の形態4にかかる照明装置301を示す下方斜視図である。図37は照明装置301を示す上方斜視図である。照明装置301は、防汚部材304を備えている。防汚部材304は、互いに直径の異なる略円盤状の複数の防汚部材304a〜304eが、通風可能な通風隙間15を置きつつ、筐体2の一端に重ねられたものである。最上部に配置される防汚部材304e以外の、複数の防汚部材304a〜304dは通気開口311a〜311dを備えている。通気開口311a〜311dと通風隙間15を介して、照明装置301の上方において、筐体2の内部と筐体2の外部とが通風可能に連通される。防汚部材304における冷却風の流れおよび排気に関する動作および効果は、実施の形態1の防汚部材4とほぼ同様である。   FIG. 36 is a lower perspective view showing the illumination device 301 according to the fourth embodiment of the present invention. FIG. 37 is an upper perspective view showing the lighting device 301. The lighting device 301 includes an antifouling member 304. The antifouling member 304 is formed by stacking a plurality of substantially disc-shaped antifouling members 304 a to 304 e having different diameters on one end of the housing 2 with a ventilation gap 15 that allows ventilation. The plurality of antifouling members 304a to 304d other than the antifouling member 304e disposed at the top are provided with vent openings 311a to 311d. Via the ventilation openings 311 a to 311 d and the ventilation gap 15, the interior of the housing 2 and the outside of the housing 2 are communicated with each other so as to allow ventilation. The operation and effect of the antifouling member 304 regarding the flow of cooling air and the exhaust are substantially the same as those of the antifouling member 4 of the first embodiment.

図38は、照明装置301の分解斜視図である。照明装置301では、6個の発光手段13が熱拡散部材305の中心から放射状に等角度かつ等距離に配置されており、さらに中心に一つの発光手段13を配置している。これにより配光を良好としている。   FIG. 38 is an exploded perspective view of the lighting device 301. In the illuminating device 301, six light emitting means 13 are arranged radially at equal angles and at an equal distance from the center of the heat diffusing member 305, and one light emitting means 13 is arranged at the center. This makes the light distribution good.

発光手段13は、熱拡散部材305の中央側に寄せて筐体2の側面から離して配置されている。よって筐体2周辺での多重反射成分に伴う器具効率の低下を抑制するとともに、配光特性の自由度を高めている。なお、発光手段13には実施の形態1〜3と同様にCOB光源が用いられている。   The light emitting means 13 is arranged close to the center side of the heat diffusion member 305 and away from the side surface of the housing 2. Therefore, the reduction in the instrument efficiency accompanying the multiple reflection components around the housing 2 is suppressed, and the degree of freedom of the light distribution characteristics is increased. The light emitting means 13 uses a COB light source as in the first to third embodiments.

実施の形態4にかかる照明装置301は、7個の発光手段13を備え、6つの放熱部材8を備えている。しかしながら、発光手段13と放熱部材308以外は同じ構成で、発光手段13を4個と放熱部材308を3個として、放射状に3個の発光手段13を配置し、中央に1個の発光手段13を配置してもよい。つまり、環状に配置される6つの発光手段13から、1個置きに発光手段13を間引いて3個に減らしてもよい。このようにすることで、比較的均等な表面発光強度分布を得ながら、照明装置301と比較して約4/7の光束クラスの照明装置を構成することができる。あるいは、発光手段13と放熱部材308を各3個として、放射状に配置してもよい。これにより、比較的均等な表面発光強度分布を得ながら、照明装置301と比較して約3/7の光束クラスの照明装置を構成することができる。このように、部品を共通化・標準化しながら複数の光束クラスの照明装置をラインアップでき、金型等の製造設備への投資を抑制でき照明装置を低コスト化できる。   The illumination device 301 according to the fourth embodiment includes seven light emitting means 13 and six heat radiating members 8. However, except for the light emitting means 13 and the heat radiating member 308, the configuration is the same, with four light emitting means 13 and three heat radiating members 308, three light emitting means 13 arranged radially, and one light emitting means 13 in the center. May be arranged. That is, the light emitting means 13 may be thinned out from the six light emitting means 13 arranged in a ring shape to be reduced to three. By doing so, it is possible to configure an illumination device having a luminous flux class of about 4/7 as compared with the illumination device 301 while obtaining a relatively uniform surface emission intensity distribution. Alternatively, the light emitting means 13 and the heat radiating member 308 may be arranged in a radial manner with three each. As a result, it is possible to configure an illumination device having a luminous flux class of about 3/7 as compared with the illumination device 301 while obtaining a relatively uniform surface emission intensity distribution. In this way, it is possible to line up lighting devices of a plurality of luminous flux classes while standardizing and standardizing parts, and it is possible to suppress investment in manufacturing equipment such as molds and reduce the cost of the lighting device.

図39は、放熱部材308の三面図と斜視図を示す。図39(a)は放熱部材308の上方斜視図であり、図39(b)〜(d)は放熱部材308の三面図である。放熱部材308は良好な熱伝導性を有する材料、具体的にはアルミニウム合金や銅等の金属で形成される。放熱部材308は、複数の放熱部310および受熱部309を備えている。放熱部材308は、放熱部材8とほぼ同じ構造を備えている。すなわち、対向する2つの放熱部310を有する複数の放熱ユニット308aが、間隔Mだけずれながらジグザグに連なっている。   FIG. 39 shows a three-side view and a perspective view of the heat dissipation member 308. 39A is an upper perspective view of the heat dissipation member 308, and FIGS. 39B to 39D are three views of the heat dissipation member 308. FIG. The heat radiating member 308 is formed of a material having good thermal conductivity, specifically, a metal such as an aluminum alloy or copper. The heat radiating member 308 includes a plurality of heat radiating portions 310 and a heat receiving portion 309. The heat radiating member 308 has substantially the same structure as the heat radiating member 8. That is, a plurality of heat radiation units 308a having two heat radiation portions 310 facing each other are connected in a zigzag manner while being shifted by an interval M.

放熱部材308の端部には、放熱ユニット308bも備えられている。放熱ユニット308bは1つの放熱部310aを備えており、放熱部310aは対向する放熱部310を備えていない。つまり、受熱部309を介して放熱部310aが向かい合う先には放熱部310が設けられておらず、遮蔽物無く開放されている。受熱部309は、放熱部310a側に、端面309aを備えている。端面309aは、放熱部材208の長手方向中央線CLに対して角度θで交差する直線に沿って切断されている。角度θは、本実施の形態では約60度である。   A heat radiating unit 308b is also provided at the end of the heat radiating member 308. The heat dissipating unit 308b includes one heat dissipating part 310a, and the heat dissipating part 310a does not include the opposing heat dissipating part 310. That is, the heat dissipating part 310 is not provided at the point where the heat dissipating part 310a faces through the heat receiving part 309, and is open without a shield. The heat receiving unit 309 includes an end surface 309a on the heat radiating unit 310a side. The end surface 309a is cut along a straight line that intersects the longitudinal center line CL of the heat dissipation member 208 at an angle θ. The angle θ is about 60 degrees in the present embodiment.

図40は、照明装置301をその中心軸に沿って切断した断面図である。図41〜43は、照明装置301をその高さ方向の異なる位置でスライスした断面を見下ろした断面図である。図41〜43の断面A4〜C4は、図40に示した断面A4〜C4が指し示す位置とそれぞれ対応している。   FIG. 40 is a cross-sectional view of the lighting device 301 taken along the central axis. 41 to 43 are cross-sectional views looking down at a cross section obtained by slicing the lighting device 301 at different positions in the height direction. 41 to 43 correspond to the positions indicated by the cross sections A4 to C4 shown in FIG.

図41に示すように、6つの放熱部材308それぞれの長手方向中央線CLは、熱拡散部材305と中心を共通とする仮想円Qに接するように、等しい角度を置いて、熱拡散部材305の面内で交差している。この等しい角度は、本実施の形態では60度である。6つの放熱部材308それぞれの放熱部310aは、熱拡散部材305の中心を軸として60度ずつ回転しながら放射状に設けられ、かつ隣合う放熱部310aが互いに当接している。   As shown in FIG. 41, the center line CL in the longitudinal direction of each of the six heat radiating members 308 is at an equal angle so as to contact a virtual circle Q having the center in common with the heat diffusing member 305. Cross in the plane. This equal angle is 60 degrees in the present embodiment. The heat radiating portions 310a of the six heat radiating members 308 are provided radially while rotating by 60 degrees around the center of the heat diffusing member 305, and adjacent heat radiating portions 310a are in contact with each other.

6つの発光手段13は、熱拡散部材305の平面視で放熱部材308の少なくとも一部と重なるように配置されている。中央の発光手段13も6つの放熱部310aが当接した部分に重ねて配置されているので、その発熱は複数の放熱部材308に分散され中央の発光手段13の冷却も確保される。中央に発光手段13を配置することで配光特性を良好にするとともに器具効率が高まるという利点がある。   The six light emitting means 13 are arranged so as to overlap at least a part of the heat radiating member 308 in plan view of the heat diffusing member 305. Since the central light emitting means 13 is also arranged so as to overlap with the portion where the six heat dissipating portions 310a abut, the heat generation is distributed to the plurality of heat dissipating members 308, and cooling of the central light emitting means 13 is ensured. By arranging the light emitting means 13 in the center, there is an advantage that the light distribution characteristic is improved and the instrument efficiency is increased.

図44は、本発明の実施の形態4の変形例にかかる照明装置351を示す下方斜視図である。図45は、照明装置351の分解斜視図である。照明装置301はCOBを用いた発光手段13を備えている。しかしながら、本発明はこれに限られない。発光手段13を発光手段313に置換してもよい。発光手段313は、平板状の回路配線基板319に複数のLED光源314が実装されたLED光源基板である。発光手段313には、環状の反射体6および円盤状の透光体307が重ねて取り付けられる。これらの点以外は、照明装置351は照明装置301と同じである。安価なLED光源314を回路配線基板319に多数実装した発光手段313を用いることで、低コストかつ配光特性の良好な照明装置351を得ることができる。   FIG. 44 is a lower perspective view showing a lighting device 351 according to a modification of the fourth embodiment of the present invention. FIG. 45 is an exploded perspective view of the lighting device 351. The illuminating device 301 includes light emitting means 13 using COB. However, the present invention is not limited to this. The light emitting means 13 may be replaced with the light emitting means 313. The light emitting means 313 is an LED light source board in which a plurality of LED light sources 314 are mounted on a flat circuit wiring board 319. An annular reflector 6 and a disc-shaped light transmitting body 307 are attached to the light emitting means 313 in an overlapping manner. Except for these points, the lighting device 351 is the same as the lighting device 301. By using the light emitting means 313 in which a number of inexpensive LED light sources 314 are mounted on the circuit wiring board 319, the lighting device 351 having low cost and good light distribution characteristics can be obtained.

実施の形態4によれば、複数の放熱部材308が熱拡散部材305の表面に放射状に配置され、その放射状の中央側にそれぞれの放熱部材308の放熱ユニット308bが位置するように放熱部材308を配置している。放射状に並んだ放熱部材308の中心、すなわち熱拡散部材305の中心に、発光手段13が配置されている。上述したように、配光特性と器具効率を高めるとともに、比較的均等な表面発光強度分布を得ながら、部品を共通化および標準化して複数の光束クラスの照明装置のラインアップを低コスト化する効果がある。また、変形例にかかる照明装置351は、安価なLED光源314を複数設けた回路配線基板319を発光手段313に用いており、低コスト化が可能である。   According to the fourth embodiment, the plurality of heat radiating members 308 are arranged radially on the surface of the heat diffusing member 305, and the heat radiating members 308 are arranged so that the heat radiating units 308b of the respective heat radiating members 308 are located on the radial center side. It is arranged. The light emitting means 13 is disposed at the center of the heat dissipating members 308 arranged in a radial pattern, that is, at the center of the heat diffusing member 305. As described above, while improving light distribution characteristics and instrument efficiency, obtaining a relatively uniform surface emission intensity distribution, standardizing parts and reducing the cost of a lineup of lighting devices of multiple luminous flux classes effective. Further, the illumination device 351 according to the modified example uses the circuit wiring board 319 provided with a plurality of inexpensive LED light sources 314 for the light emitting means 313, so that the cost can be reduced.

実施の形態5.
図46〜51は、本発明の実施の形態5にかかる照明装置401を示す図である。以下、実施の形態1〜4とは異なる部分を中心に、照明装置401を説明する。
Embodiment 5. FIG.
46-51 is a figure which shows the illuminating device 401 concerning Embodiment 5 of this invention. Hereinafter, the illuminating device 401 will be described focusing on portions different from the first to fourth embodiments.

図46は、本発明の実施の形態5にかかる照明装置401の下方斜視図である。図47は、実施の形態5にかかる照明装置401全体を示す上方斜視図である。照明装置401は、防汚部材404を備えている。防汚部材404は、熱拡散部材405の側の端部から上方端部に向かって徐々に径が小さくなる傾斜曲面を備えている。傾斜曲面の防汚部材404には通風可能な換気口417が設けられ、換気口417は庇部418で覆われている。庇部418により、防汚部材404の上方からの塵埃が換気口417へ侵入することを抑制している。防汚部材404の冷却風の流れ等の動作およびそれによる効果は、実施の形態2にかかる防汚部材104と同様である。   FIG. 46 is a lower perspective view of the illumination device 401 according to the fifth embodiment of the present invention. FIG. 47 is an upper perspective view illustrating the entire illumination device 401 according to the fifth embodiment. The lighting device 401 includes an antifouling member 404. The antifouling member 404 includes an inclined curved surface whose diameter gradually decreases from the end on the heat diffusion member 405 side toward the upper end. The sloped antifouling member 404 is provided with a ventilating port 417 through which air can be ventilated, and the ventilating port 417 is covered with a flange 418. The flange 418 prevents dust from above the antifouling member 404 from entering the ventilation port 417. The operation of the antifouling member 404 such as the flow of cooling air and the effects thereof are the same as those of the antifouling member 104 according to the second embodiment.

図48は、実施の形態5にかかる照明装置401の分解斜視図である。実施の形態5においては、熱拡散部材405に合計9個の発光手段13が取り付けられる。8個の発光手段13は、熱拡散部材405の中心から放射状かつ等間隔に設けられている。複数の発光手段13は、熱拡散部材105の中心まわりに回転させながら配置されている。また、熱拡散部材405の中央に、1個の発光手段13が配置されている。このような発光手段13の配置により、良好な配光を得られるようになっている。また、環状に並べられた8個の発光手段13は、熱拡散部材405の中央側に寄せて、筐体2の側面からは一定距離だけ離している。これにより、筐体2の周辺での多重反射成分に伴う器具効率の低下を抑制するとともに、配光特性の自由度を高めている。   FIG. 48 is an exploded perspective view of the lighting apparatus 401 according to the fifth embodiment. In the fifth embodiment, a total of nine light emitting means 13 are attached to the heat diffusing member 405. The eight light emitting means 13 are provided radially and equidistantly from the center of the heat diffusing member 405. The plurality of light emitting means 13 are arranged while being rotated around the center of the heat diffusion member 105. One light emitting means 13 is disposed in the center of the heat diffusing member 405. With such an arrangement of the light emitting means 13, a good light distribution can be obtained. Further, the eight light emitting means 13 arranged in an annular shape are brought close to the center side of the heat diffusing member 405 and separated from the side surface of the housing 2 by a certain distance. Thereby, while suppressing the fall of the instrument efficiency accompanying the multiple reflection component in the periphery of the housing | casing 2, the freedom degree of a light distribution characteristic is raised.

発光手段13には、実施の形態1〜4と同様にCOB光源が用いられている。照明装置401は、9個の発光手段13と、8つの放熱部材408を備えている。しかしながら本発明はこれに限られない。発光手段13と放熱部材408以外は同じ構成で、発光手段13を5個とし放熱部材408を4個としてもよい。このとき、放射状に配置される8個の発光手段13から1個置きに間引いて、放射状に4個の発光手段13を配置して中央に1個の発光手段13を配置してもよい。これにより、比較的均等な表面発光強度分布を得ながら、照明装置401と比べて約5/9の光束クラスの照明装置を構成することができる。また、発光手段13と放熱部材8を各4個としてもよい。このとき放射状に4個の発光手段13を配置することで、比較的均等な表面発光強度分布を得ながら、照明装置401と比べて約4/9の光束クラスの照明装置を構成することもできる。このように、部品を共通化および標準化しながら複数の光束クラスの照明装置をラインアップでき、金型等の製造設備への投資を抑制でき、照明装置を低コスト化できる。   As the light emitting means 13, a COB light source is used as in the first to fourth embodiments. The lighting device 401 includes nine light emitting means 13 and eight heat radiating members 408. However, the present invention is not limited to this. The configuration is the same except for the light emitting means 13 and the heat radiating member 408, and the number of the light emitting means 13 may be five and the number of the heat radiating members 408 may be four. At this time, every eight light emitting means 13 arranged radially may be thinned out, and four light emitting means 13 may be arranged radially and one light emitting means 13 may be arranged in the center. As a result, it is possible to configure a lighting device having a luminous flux class of about 5/9 compared with the lighting device 401 while obtaining a relatively uniform surface emission intensity distribution. Moreover, it is good also considering the light emission means 13 and the heat radiating member 8 as four each. At this time, by arranging the four light emitting means 13 radially, it is possible to construct a lighting device having a luminous flux class of about 4/9 compared with the lighting device 401 while obtaining a relatively uniform surface emission intensity distribution. . In this way, it is possible to line up lighting devices of a plurality of luminous flux classes while standardizing and standardizing parts, so that investment in manufacturing equipment such as molds can be suppressed, and the lighting device can be reduced in cost.

図49は、放熱部材408の三面図と斜視図を示す。図49(a)は放熱部材408の上方斜視図であり、図49(b)〜(d)は放熱部材408の三面図である。放熱部材408は熱伝導良好なアルミニウム合金や銅等の金属で形成され、その形状は実施の形態2にかかる放熱部材108と概ね同等である。ただし、放熱部材408では、受熱部409の長手方向端部に切欠部409aが設けられている。切欠部409aは直角の切り欠きである。   FIG. 49 shows a trihedral view and a perspective view of the heat dissipation member 408. 49A is an upper perspective view of the heat radiating member 408, and FIGS. 49B to 49D are three views of the heat radiating member 408. FIG. The heat radiating member 408 is made of a metal such as an aluminum alloy or copper having good thermal conductivity, and its shape is substantially the same as that of the heat radiating member 108 according to the second embodiment. However, in the heat radiating member 408, a notch 409 a is provided at the longitudinal end of the heat receiving portion 409. The notch 409a is a right-angle notch.

図50は、照明装置401の上面図を示す。図50には、破線により紙面奥側に位置する複数の放熱部材408を図示している。防汚部材404の上面視で、換気口417それぞれは、少なくとも1つの放熱部410と重なるように配置されている。   FIG. 50 shows a top view of the lighting device 401. In FIG. 50, a plurality of heat dissipating members 408 located on the back side of the drawing are illustrated by broken lines. Each of the ventilation openings 417 is disposed so as to overlap with at least one heat radiating portion 410 in the top view of the antifouling member 404.

図51は、照明装置401から防汚部材404を取り外して上方から見下ろした図である。熱拡散部材405の中心を基点にして複数の放熱部材408が放射状に設けられている。熱拡散部材405の中心まわりに、45度間隔で、複数の放熱部材408が配置されている。それぞれの放熱部材408の切欠部409a側が、中央側に向けられている。1つの放熱部材408の切欠部409aには、他の放熱部材408の受熱部409の端部がかみ合わされている。   FIG. 51 is a view of the antifouling member 404 removed from the lighting device 401 and viewed from above. A plurality of heat dissipating members 408 are provided radially from the center of the heat diffusing member 405. A plurality of heat radiation members 408 are arranged around the center of the heat diffusion member 405 at intervals of 45 degrees. The notch 409a side of each heat radiating member 408 is directed to the center side. The end of the heat receiving portion 409 of the other heat radiating member 408 is engaged with the cutout portion 409a of one heat radiating member 408.

図51に示すように、熱拡散部材405の平面視で、外側に配置した8個の発光手段13は、放熱部材408の少なくとも一部と重なるように配置される。また、熱拡散部材405の平面視で、中央に配置した1個の発光手段13は、複数の放熱部材408の切欠部409aと部分的に重なる。このように複数の発光手段13を配置することで、その発熱は複数の放熱部材408に分散される。また、中央に発光手段13を配置することで配光特性を良好にするとともに器具効率を高めている。   As shown in FIG. 51, the eight light emitting means 13 arranged on the outside in a plan view of the heat diffusing member 405 are arranged so as to overlap at least a part of the heat radiating member 408. In addition, in the plan view of the heat diffusing member 405, the single light emitting means 13 disposed in the center partially overlaps the cutout portions 409a of the plurality of heat radiating members 408. By arranging the plurality of light emitting means 13 in this way, the heat generation is distributed to the plurality of heat radiating members 408. In addition, the light emitting means 13 is arranged in the center to improve the light distribution characteristics and increase the efficiency of the appliance.

図52は、本発明の実施の形態5の変形例にかかる照明装置451の下方斜視図である。図53は、照明装置451の分解図である。照明装置451は、実施の形態4の変形例にかかる照明装置351と同様に、発光手段13に代えて発光手段313を熱拡散部材405の中央に取り付けたものである。これにより、照明装置351と同様に、低コストかつ配光特性の良好な照明装置451を得ることができる。   FIG. 52 is a lower perspective view of an illumination device 451 according to a modification of the fifth embodiment of the present invention. FIG. 53 is an exploded view of the lighting device 451. The illuminating device 451 is obtained by attaching a light emitting unit 313 in the center of the heat diffusing member 405 instead of the light emitting unit 13 in the same manner as the illuminating device 351 according to the modification of the fourth embodiment. Thereby, similarly to the illuminating device 351, the illuminating device 451 with low cost and favorable light distribution characteristics can be obtained.

以上説明した実施の形態5によれば、受熱部409の長手方向端部に切欠部409aを設け、熱拡散部材405の平面視において、受熱部409における切欠部409a側の端部を中央側に向けて複数の放熱部材408を放射状に配置している。また、1つの放熱部材408の切欠部409aに対して、隣接する他の放熱部材408の受熱部409をかみ合わせている。熱拡散部材405の平面視で、中央に配置した1個の発光手段13は、複数の放熱部材408の切欠部409aと部分的に重なる。その結果、中央の発光手段13にも必要な冷却ができるとともに、配光特性と器具効率を高めることができる。   According to the fifth embodiment described above, the notch 409a is provided at the longitudinal end of the heat receiving portion 409, and the end of the heat receiving portion 409 on the notch 409a side in the plan view of the heat diffusing member 409 is on the center side. A plurality of heat dissipating members 408 are arranged radially. Further, a heat receiving portion 409 of another adjacent heat radiating member 408 is engaged with a notch 409 a of one heat radiating member 408. In the plan view of the heat diffusing member 405, the single light emitting means 13 disposed in the center partially overlaps the cutout portions 409a of the plurality of heat radiating members 408. As a result, the central light emitting means 13 can be cooled as well as light distribution characteristics and instrument efficiency can be improved.

実施の形態6.
図54〜61は、本発明の実施の形態6にかかる照明装置501を示す図である。以下、実施の形態1〜5とは異なる部分を中心に、照明装置501を説明する。
Embodiment 6 FIG.
54 to 61 are diagrams showing an illumination device 501 according to a sixth embodiment of the present invention. Hereinafter, the illumination device 501 will be described with a focus on portions different from the first to fifth embodiments.

図54は、本発明の実施の形態6にかかる照明装置501を示す下方斜視図である。図55は照明装置501を示す上方斜視図である。照明装置501は、防汚部材504を備えている。防汚部材504は、互いに直径の異なる略円盤状の複数の防汚部材504a〜504eが、通風可能な通風隙間15を置きつつ、筐体2の一端に重ねられたものである。最上部に配置される防汚部材504e以外の、複数の防汚部材504a〜504dは通気開口511a〜511dを備えている。通気開口511a〜511dと通風隙間15を介して、照明装置501の上方において、筐体2の内部と筐体2の外部とが通風可能に連通される。防汚部材504における冷却風の流れおよび排気に関する動作および効果は、実施の形態1の防汚部材4とほぼ同様である。   FIG. 54 is a lower perspective view showing the lighting apparatus 501 according to the sixth embodiment of the present invention. FIG. 55 is an upper perspective view showing the lighting device 501. The lighting device 501 includes an antifouling member 504. The antifouling member 504 is formed by stacking a plurality of substantially disc-shaped antifouling members 504 a to 504 e having different diameters on one end of the housing 2 with a ventilation gap 15 that allows ventilation. A plurality of antifouling members 504a to 504d other than the antifouling member 504e disposed at the top are provided with ventilation openings 511a to 511d. Via the ventilation openings 511a to 511d and the ventilation gap 15, the inside of the housing 2 and the outside of the housing 2 are communicated with each other so as to allow ventilation. The operation and effect of the antifouling member 504 relating to the flow of cooling air and the exhaust are substantially the same as those of the antifouling member 4 of the first embodiment.

図56は、照明装置501の分解斜視図である。照明装置501は、熱拡散部材505の中心から放射状に、等角度かつ等距離に4個の発光手段13が配置されている。さらに、中心に1個の発光手段13が配置されている。このように発光手段13を配置することで、配光を良好としている。   FIG. 56 is an exploded perspective view of the lighting device 501. In the illumination device 501, four light emitting means 13 are arranged radially and equidistantly from the center of the heat diffusion member 505. Furthermore, one light emitting means 13 is arranged at the center. By arranging the light emitting means 13 in this way, light distribution is good.

発光手段13は、熱拡散部材505の中央側に寄せて筐体2の側端面から離して配置されている。よって筐体2周辺での多重反射成分に伴う器具効率の低下を抑制するとともに、配光特性の自由度を高めている。なお、発光手段13には実施の形態1などと同様にCOB光源が用いられている。ただし、実施の形態6においては、発光手段13を実施の形態1〜5と比べて高出力かつ高発熱量のものとしてもよい。   The light emitting means 13 is arranged close to the center side of the heat diffusing member 505 and away from the side end surface of the housing 2. Therefore, the reduction in the instrument efficiency accompanying the multiple reflection components around the housing 2 is suppressed, and the degree of freedom of the light distribution characteristics is increased. Note that a COB light source is used for the light emitting means 13 as in the first embodiment. However, in the sixth embodiment, the light emitting means 13 may have a higher output and a higher calorific value than those of the first to fifth embodiments.

実施の形態6にかかる照明装置501は、5個の発光手段13を備え、6つの放熱部材508を備えている。しかしながら、本発明はこれに限られない。発光手段13と放熱部材508以外は同じ構成で、発光手段13を3個とし、放熱部材508を4個としてもよい。このとき、3個の発光手段13をI字状に並べて配置してもよい。このようにすることで、比較的均等な表面発光強度分布を得ながら、照明装置501と比べて約3/5の光束クラスの照明装置を構成することができる。このように、部品を共通化および標準化しながら複数の光束クラスの照明装置をラインアップでき、金型等の製造設備への投資を抑制でき、照明装置を低コスト化できる。   The illumination device 501 according to the sixth embodiment includes five light emitting units 13 and six heat radiating members 508. However, the present invention is not limited to this. The configuration other than the light emitting means 13 and the heat radiating member 508 may be the same, and the number of the light emitting means 13 may be three and the number of the heat radiating members 508 may be four. At this time, the three light emitting means 13 may be arranged in an I shape. By doing in this way, it is possible to configure an illumination device having a luminous flux class of about 3/5 as compared with the illumination device 501 while obtaining a relatively uniform surface emission intensity distribution. In this way, it is possible to line up lighting devices of a plurality of luminous flux classes while standardizing and standardizing parts, so that investment in manufacturing equipment such as molds can be suppressed, and the lighting device can be reduced in cost.

図57は、放熱部材508の三面図と斜視図を示す。図57(a)は放熱部材508の上方斜視図であり、図57(b)〜(d)は放熱部材508の三面図である。放熱部材508は良好な熱伝導性を有する材料、具体的にはアルミニウム合金や銅等の金属で形成される。放熱部材508の形状は、実施の形態2にかかる放熱部材108と概ね同じであり、その動作および効果も同様である。   FIG. 57 shows a trihedral view and a perspective view of the heat dissipation member 508. 57A is an upper perspective view of the heat radiating member 508, and FIGS. 57B to 57D are three views of the heat radiating member 508. FIG. The heat radiating member 508 is formed of a material having good thermal conductivity, specifically, a metal such as an aluminum alloy or copper. The shape of the heat radiating member 508 is substantially the same as that of the heat radiating member 108 according to the second embodiment, and the operation and effect thereof are also the same.

図58は、照明装置501をその中心軸に沿って切断した断面図である。図59〜61は、照明装置501をその高さ方向の異なる位置でスライスした断面を見下ろした断面図である。図59〜61の断面A6〜C6は、図58に示した断面A6〜C6が指し示す位置とそれぞれ対応している。   FIG. 58 is a cross-sectional view of the lighting device 501 cut along its central axis. 59 to 61 are cross-sectional views looking down on a cross section obtained by slicing the lighting device 501 at different positions in the height direction. 59 to 61 correspond to the positions indicated by the cross sections A6 to C6 shown in FIG.

実施の形態1〜5にかかる熱拡散部材5〜405それぞれは、複数の通気開口11g〜411gを備えている。放射状に配置される放熱部材8〜408は、隣り合う通気開口11g〜411gの間に、1個ずつ配置されている。その結果、実施の形態1〜5では、熱拡散部材5〜405それぞれに対して放熱部材8〜408それぞれが放射状に配置されており、熱拡散部材5〜405の中心まわりに等角度を置いて並べられている。   Each of the thermal diffusion members 5 to 405 according to the first to fifth embodiments includes a plurality of ventilation openings 11g to 411g. Radiation members 8 to 408 arranged radially are arranged one by one between adjacent ventilation openings 11g to 411g. As a result, in the first to fifth embodiments, each of the heat radiating members 8 to 408 is radially arranged with respect to each of the heat diffusing members 5 to 405, and is equiangular around the center of the heat diffusing members 5 to 405. Are lined up.

これに対し、実施の形態6では、熱拡散部材555が有する4つの通気開口511gのうち隣り合う2つの通気開口511gの間に、2個の放熱部材508が並べられている。図59に示すように、熱拡散部材505の平面視において、放熱部材508が2列ずつ90度を置いて放射状に並べられている。   On the other hand, in the sixth embodiment, two heat radiating members 508 are arranged between two adjacent ventilation openings 511g among the four ventilation openings 511g of the heat diffusion member 555. As shown in FIG. 59, in the plan view of the heat diffusing member 505, the heat dissipating members 508 are arranged in a radial pattern at 90 degrees in two rows.

平行に並ぶ2つの放熱部材508は、それぞれの放熱部510が同一平面上に平行に並ぶように、配置されている。この点をより詳細に説明すると、図59の破線P5は、平行に並ぶ2つの放熱部材508のうち、一方の放熱部材508の1つの放熱部510と他方の放熱部材508の1つの放熱部510を囲っている。平行に並ぶ2つの放熱部材508のうち、一方の放熱部材508の放熱部510と他方の放熱部材508の放熱部510とが、同一平面上に段差無く並んでいる。個々の放熱部材508を見ると、複数の放熱部510が互いに等間隔かつ同方向を向いて整列している。このようにすることで一定間隔の冷却風流路を確保することができ、冷却効率を高めることができる。   The two heat radiating members 508 arranged in parallel are arranged so that the respective heat radiating portions 510 are arranged in parallel on the same plane. This point will be described in more detail. A broken line P5 in FIG. 59 indicates that one of the two heat dissipating members 508 arranged in parallel is one heat dissipating part 510 of one heat dissipating member 508 and one heat dissipating part 510 of the other heat dissipating member 508. Surrounding. Of the two heat dissipating members 508 arranged in parallel, the heat dissipating part 510 of one heat dissipating member 508 and the heat dissipating part 510 of the other heat dissipating member 508 are arranged on the same plane without any step. When the individual heat dissipating members 508 are viewed, a plurality of heat dissipating portions 510 are aligned at equal intervals and in the same direction. By doing in this way, the cooling air flow path of a fixed space | interval can be ensured, and cooling efficiency can be improved.

放熱部材508それぞれの長手方向中央線CLは、熱拡散部材505と中心を共通とする仮想円に接するように、等角度を置いて、熱拡散部材505の面内で交差している。外側に配置される発光手段13は、熱拡散部材505の平面視で、平行に並ぶ2個の放熱部材508の両方と重なるように配置されている。2個の放熱部材508で1個の発光手段13を分散して冷却することができる。これにより、発光手段13を高出力かつ高発熱量なものとしても、温度上昇を抑え発光効率および寿命を確保することができる。   The center line CL in the longitudinal direction of each of the heat radiating members 508 intersects within the plane of the heat diffusing member 505 at an equal angle so as to contact a virtual circle having the center in common with the heat diffusing member 505. The light emitting means 13 disposed outside is disposed so as to overlap both the two heat radiating members 508 arranged in parallel in a plan view of the heat diffusing member 505. One light emitting means 13 can be dispersed and cooled by two heat radiating members 508. Thereby, even if the light emitting means 13 has a high output and a high calorific value, the temperature rise can be suppressed and the light emission efficiency and the life can be ensured.

また、中央に配置される発光手段13は、熱拡散部材505の平面視で、4個の放熱部材508の端部それぞれに重なるように配置されている。中央の発光手段13と重なった4個の放熱部材508それぞれには、隣に他の放熱部材508が平行に並んでいる。熱拡散部材505により、この平行に並ぶ2個の放熱部材508の間で熱が伝わり、最終的には全ての放熱部材508が冷却に寄与することができる。これにより、発光手段13を高出力かつ高発熱量なものとしても、温度上昇を抑え発光効率および寿命を確保することができる。また、発光手段13を高出力かつ高発熱量なものとすることで、発光手段13の数を減らしてもよい。その場合、部品数が減ることで組立に要するコストも低減される。   Further, the light emitting means 13 disposed in the center is disposed so as to overlap each of the end portions of the four heat radiating members 508 in a plan view of the heat diffusing member 505. Each of the four heat radiating members 508 overlapped with the central light emitting means 13 has another heat radiating member 508 arranged in parallel next to it. The heat diffusing member 505 transmits heat between the two heat radiating members 508 arranged in parallel, and finally, all the heat radiating members 508 can contribute to cooling. Thereby, even if the light emitting means 13 has a high output and a high calorific value, the temperature rise can be suppressed and the light emission efficiency and the life can be ensured. Further, the number of the light emitting means 13 may be reduced by making the light emitting means 13 have a high output and a high calorific value. In that case, the cost required for assembly is reduced by reducing the number of parts.

実施の形態6にかかる照明装置501では、2個の放熱部材508を平行に並べて1セットとし、合計で4セットの放熱部材508の群を備えている。しかしながら、本発明はこれに限られない。3個以上の放熱部材508を並べて1セットとしてもよい。また、照明装置501では同一形状の放熱部材508を並べているが、本発明はこれに限られない。異なる形状の放熱部材を並べても良い。   In the illumination device 501 according to the sixth embodiment, two heat dissipating members 508 are arranged in parallel to form one set, and a total of four sets of heat dissipating members 508 are provided. However, the present invention is not limited to this. Three or more heat radiating members 508 may be arranged to form one set. Moreover, although the heat radiating member 508 of the same shape is arranged in the illuminating device 501, this invention is not limited to this. You may arrange the heat dissipation member of a different shape.

図62は、本発明の実施の形態6の変形例にかかる照明装置551の下方斜視図である。図63は、照明装置551の分解図である。図64は照明装置551から防汚部材504を取り外して上方から見下ろした図である。照明装置551は、実施の形態4の変形例にかかる照明装置351と同様に、発光手段13に代えて発光手段313を熱拡散部材555の中央に取り付けたものである。これにより、照明装置351と同様に、低コストかつ配光特性の良好な照明装置551を得ることができる。   FIG. 62 is a lower perspective view of a lighting device 551 according to a modification of the sixth embodiment of the present invention. FIG. 63 is an exploded view of the lighting device 551. FIG. 64 is a view of the antifouling member 504 removed from the lighting device 551 and viewed from above. In the same way as the illumination device 351 according to the modification of the fourth embodiment, the illumination device 551 is obtained by attaching a light emitting unit 313 instead of the light emitting unit 13 to the center of the heat diffusion member 555. Thereby, similarly to the lighting device 351, the lighting device 551 having low cost and good light distribution characteristics can be obtained.

熱拡散部材555は、中心角が90度の扇形形状を有する通気開口561gを4つ備えている。さらに、熱拡散部材555は、2つの通気開口561gの間に設けられ通気開口561gよりも小さな通気開口561hを複数個備えている。通気開口561hはそれぞれ正方形である。2個の平行に並んだ放熱部材508の間に通気開口561hが開口するようになっている。このようにすることで、平行に並ぶ2個の放熱部材508の間に冷却風を流入しやすくでき、冷却効率が高まり、高密度に複数の放熱部材508を配置することができる。その結果、発光手段13を高出力かつ高発熱量なものとした場合であっても、発光手段13の発光効率を高くし、長寿命を得ることができる。   The heat diffusion member 555 includes four ventilation openings 561g having a sector shape with a central angle of 90 degrees. Furthermore, the heat diffusion member 555 includes a plurality of ventilation openings 561h that are provided between the two ventilation openings 561g and are smaller than the ventilation openings 561g. The ventilation openings 561h are each square. A ventilation opening 561h is opened between two parallel heat dissipating members 508. By doing in this way, it becomes easy to flow cooling air between the two heat radiating members 508 arranged in parallel, the cooling efficiency is improved, and a plurality of heat radiating members 508 can be arranged with high density. As a result, even if the light emitting means 13 has a high output and a high calorific value, the light emission efficiency of the light emitting means 13 can be increased and a long life can be obtained.

以上説明した実施の形態6によれば、熱拡散部材555が、2つの通気開口561gの間に設けられ通気開口561gよりも小さな通気開口561hを複数個備えている。このようにすることで、平行に並ぶ2個の放熱部材508の間に冷却風を流入しやすくでき、冷却効率が高まり、高密度に複数の放熱部材508を配置することができる。   According to the sixth embodiment described above, the heat diffusion member 555 includes a plurality of ventilation openings 561h that are provided between the two ventilation openings 561g and are smaller than the ventilation openings 561g. By doing in this way, it becomes easy to flow cooling air between the two heat radiating members 508 arranged in parallel, the cooling efficiency is improved, and a plurality of heat radiating members 508 can be arranged with high density.

また、外側に配置される発光手段13は、熱拡散部材505の平面視で、平行に並ぶ複数の放熱部材508と重なるように配置されている。2個の放熱部材508で1個の発光手段13を分散して冷却することができる。   Further, the light emitting means 13 disposed on the outside is disposed so as to overlap a plurality of heat radiating members 508 arranged in parallel in a plan view of the heat diffusing member 505. One light emitting means 13 can be dispersed and cooled by two heat radiating members 508.

実施の形態7.
図65〜71は、本発明の実施の形態7にかかる照明装置601を示す図である。以下、実施の形態1〜6とは異なる部分を中心に、照明装置601を説明する。照明装置601は上面視の外形が四角形であり、実施の形態1〜6にかかる照明装置1〜501の上面視の外形が円形であったのと異なっている。
Embodiment 7 FIG.
FIGS. 65 to 71 are diagrams showing an illumination device 601 according to a seventh embodiment of the present invention. Hereinafter, the illuminating device 601 will be described focusing on parts different from the first to sixth embodiments. The illuminating device 601 has a quadrangular outer shape in top view, which is different from the illuminating devices 1 to 501 according to the first to sixth embodiments in circular shape.

図65は、本発明の実施の形態7にかかる照明装置601の下方斜視図である。図66は、照明装置601全体を示す上方斜視図である。図67は、照明装置601の分解斜視図である。照明装置601は、内部が空洞である四角柱状の筐体602と、この筐体602の一端に取り付けられ筐体602と同じ四角形状の縁を備えた防汚部材604とを備えている。筐体602における防汚部材604と接続する縁と反対側に、熱拡散部材605が設けられる。熱拡散部材605は、筐体602の縁よりも一回り小さな四角形の平面体である。   FIG. 65 is a lower perspective view of the illumination device 601 according to the seventh embodiment of the present invention. FIG. 66 is an upper perspective view showing the entire lighting device 601. FIG. 67 is an exploded perspective view of the lighting device 601. The lighting device 601 includes a quadrangular prism-shaped casing 602 that is hollow inside, and an antifouling member 604 that is attached to one end of the casing 602 and has the same rectangular edge as the casing 602. A heat diffusing member 605 is provided on the side opposite to the edge connected to the antifouling member 604 in the housing 602. The heat diffusion member 605 is a rectangular planar body that is slightly smaller than the edge of the housing 602.

防汚部材604は、それぞれが台形の傾斜面を4つほど備えている。それぞれの傾斜面は、熱拡散部材605の側の端部から上方端部に向かうにつれて徐々に幅が狭くなる。それぞれの傾斜面には通風可能な換気口617が設けられ、換気口617は庇部618で覆われている。庇部618により、防汚部材604の上方からの塵埃が換気口617へ侵入することを抑制している。防汚部材604の冷却風の流れ等の動作およびそれによる効果は、実施の形態2にかかる防汚部材104と同様である。   Each of the antifouling members 604 includes about four trapezoidal inclined surfaces. Each inclined surface gradually decreases in width from the end on the heat diffusion member 605 side toward the upper end. Each inclined surface is provided with a ventilation port 617 that allows ventilation, and the ventilation port 617 is covered with a flange portion 618. The flange 618 prevents dust from above the antifouling member 604 from entering the ventilation port 617. The operation of the antifouling member 604 such as the flow of cooling air and the effects thereof are the same as those of the antifouling member 104 according to the second embodiment.

本実施の形態においては、四角形の平面を有する熱拡散部材605に、4個の放熱部材608を平行に並べて複数配置している。筐体2と筐体602とで幅を同一とした場合、放射状に配置する場合に比べ放熱部材608の長手方向寸法を2倍程度とすることができる。少ない放熱部材608で多くの発光手段13を冷却することで、部品コストおよび組立コストを低減することができる。1個の放熱部材608で2個の発光手段13を冷却しており、同じ8個の発光手段13を備える実施の形態1にかかる照明装置1と比べて半分の個数の放熱部材で冷却を行うことができる。   In the present embodiment, a plurality of four heat radiating members 608 are arranged in parallel on a heat diffusing member 605 having a rectangular plane. When the widths of the housing 2 and the housing 602 are the same, the longitudinal dimension of the heat dissipation member 608 can be about twice that of the case where the housings 602 are arranged radially. By cooling many light emitting means 13 with a small number of heat dissipating members 608, it is possible to reduce component costs and assembly costs. Two light emitting means 13 are cooled by one heat radiating member 608, and cooling is performed by half the number of heat radiating members as compared to the lighting device 1 according to the first embodiment including the same eight light emitting means 13. be able to.

熱拡散部材605は、四隅に通気開口611iを備え、対向する2辺に沿って複数の通気開口611gが設けられ、対向する他の2辺に沿って複数の通気開口611hが設けられている。   The heat diffusion member 605 has ventilation openings 611i at four corners, a plurality of ventilation openings 611g are provided along two opposing sides, and a plurality of ventilation openings 611h are provided along the other two opposing sides.

発光手段13と放熱部材608以外は照明装置601と同じ構成として、発光手段13を4個とし放熱部材608を2個としてもよい。照明装置601の場合、すなわち放熱部材608が4個の場合における両端位置にのみ、この2個の放熱部材608を配置してもよい。このようにすることで、照明装置601と比較して約1/2の光束クラスの照明装置を構成することができる。   Except for the light emitting means 13 and the heat radiating member 608, the same configuration as that of the lighting device 601 may be used, and the number of the light emitting means 13 may be four and the heat radiating member 608 may be two. In the case of the lighting device 601, that is, in the case where there are four heat dissipating members 608, the two heat dissipating members 608 may be disposed only at both end positions. By doing so, it is possible to configure an illuminating device having a luminous flux class that is approximately ½ that of the illuminating device 601.

図68は、放熱部材608の三面図と斜視図を示す。図68(a)は、放熱部材608の斜視図である。図68(b)〜(d)は、放熱部材608の三面図である。放熱部材608は熱伝導良好なアルミニウム合金や銅等の金属で形成される。放熱部材608の形状は実施の形態1にかかる放熱部材8とほぼ同様である。しかし、放熱部材608では長手方向の放熱ユニット608aの個数が10個であり、放熱部材8よりも放熱ユニットの個数が多い。   FIG. 68 shows a three-side view and a perspective view of the heat dissipation member 608. FIG. 68A is a perspective view of the heat dissipation member 608. 68 (b) to 68 (d) are three views of the heat dissipation member 608. The heat dissipating member 608 is formed of a metal such as an aluminum alloy or copper having good thermal conductivity. The shape of the heat dissipation member 608 is substantially the same as that of the heat dissipation member 8 according to the first embodiment. However, in the heat radiation member 608, the number of heat radiation units 608a in the longitudinal direction is ten, and the number of heat radiation units is larger than that of the heat radiation member 8.

また、図68(b)に示すように、実施の形態7においては、対向する放熱部610の中央線CH上に、隣接する放熱ユニット608aの放熱部610が配置している。1つの放熱ユニット608aの放熱部610とこれと隣り合う他の放熱ユニット608aの第1の放熱部610の間のずれを、間隔M7で表す。1つの放熱ユニット608aの放熱部610とこれと隣り合う他の放熱ユニット608aの第2の放熱部610の間のずれを、間隔N7で表す。本実施の形態では、この間隔M7と間隔N7が等しくされている。その結果、各放熱部610の冷却風の流路隙間が均一化され、冷却効率が高まる。   As shown in FIG. 68 (b), in the seventh embodiment, the heat dissipating part 610 of the adjacent heat dissipating unit 608a is disposed on the center line CH of the heat dissipating part 610 facing each other. A gap between the heat radiating portion 610 of one heat radiating unit 608a and the first heat radiating portion 610 of another heat radiating unit 608a adjacent thereto is represented by an interval M7. A gap between the heat radiating portion 610 of one heat radiating unit 608a and the second heat radiating portion 610 of another heat radiating unit 608a adjacent thereto is represented by an interval N7. In the present embodiment, the interval M7 and the interval N7 are equal. As a result, the cooling air passage gaps of the heat radiating portions 610 are made uniform, and the cooling efficiency is increased.

図69は、照明装置601をその中心軸に沿って切断した断面図である。図70は照明装置601の上面図である。図71は、照明装置601における図69に指し示した断面Aを示す断面図であり、照明装置601から防汚部材604を取り外して上方から見下ろした図である。隣合う2個の放熱部材608の間には、間隔L7が設けられている。本実施の形態では、上述した間隔M7、N7と、この間隔L7を等しくしている。これにより全ての放熱部610の間の流路隙間が均一化され、冷却効率が高まる。   FIG. 69 is a cross-sectional view of the lighting device 601 cut along its central axis. FIG. 70 is a top view of the lighting device 601. 71 is a cross-sectional view showing the cross section A indicated in FIG. 69 in the lighting device 601, and is a view of the antifouling member 604 removed from the lighting device 601 and looking down from above. A gap L7 is provided between two adjacent heat dissipation members 608. In the present embodiment, the intervals M7 and N7 described above are set equal to the interval L7. Thereby, the flow path gaps between all the heat radiating portions 610 are made uniform, and the cooling efficiency is increased.

なお、照明装置601では2個の発光手段13を一組として四方に配置した。しかしながら、本発明はこれに限られない。変形例として、8個の発光手段13を、熱拡散部材605の中心から等距離かつ等角度で放射状に配置してもよい。この場合、熱拡散部材605の平面視で、それぞれの発光手段13が、放熱部材608の少なくとも一部に重なることが好ましい。この変形例の配置によれば、配光特性を優先することができる。   In addition, in the illuminating device 601, the two light emission means 13 were arrange | positioned in four directions as one set. However, the present invention is not limited to this. As a modification, the eight light emitting means 13 may be radially arranged at the same distance and at the same angle from the center of the heat diffusion member 605. In this case, each light emitting unit 13 preferably overlaps at least a part of the heat radiating member 608 in a plan view of the heat diffusing member 605. According to the arrangement of this modification, priority can be given to light distribution characteristics.

図70は、照明装置601の上面図である。熱拡散部材605の通気開口611g、611h、611iを、便宜上、防汚部材604を透視して破線で示す。熱拡散部材605の平面視における換気口617の配置についてみると、最も外周側の換気口617は、熱拡散部材605の通気開口611g、611h、611iの外周側端部よりも、内側に配置されている。これにより、熱拡散部材605における外周側から中央に向かう冷却風の気流を形成することができ、これにより熱拡散部材605の中央側に配置された放熱部610の冷却効率を高めている。   FIG. 70 is a top view of the lighting device 601. The ventilation openings 611g, 611h, and 611i of the heat diffusion member 605 are indicated by broken lines through the antifouling member 604 for convenience. Looking at the arrangement of the ventilation holes 617 in a plan view of the heat diffusion member 605, the outermost ventilation holes 617 are arranged on the inner side of the outer peripheral side ends of the ventilation openings 611g, 611h, 611i of the heat diffusion member 605. ing. Thereby, the airflow of the cooling wind which goes to the center from the outer peripheral side in the heat-diffusion member 605 can be formed, and the cooling efficiency of the thermal radiation part 610 arrange | positioned at the center side of the heat-diffusion member 605 is thereby raised.

熱拡散部材605の上に配置された隣り合う放熱部材608が、平行に等間隔を空けて配置されている。通気開口611g、611h、611iにより、放熱部材608の間への冷却風の流入経路を設け、放熱部610の冷却効率を高めている。特に、放熱部材608における長手方向両端の放熱ユニット608aについては、その両脇に通気開口611gが設けられる。   Adjacent heat dissipating members 608 arranged on the heat diffusing member 605 are arranged in parallel at equal intervals. The ventilation openings 611g, 611h, and 611i provide a cooling air inflow path between the heat radiating members 608 to increase the cooling efficiency of the heat radiating unit 610. In particular, the heat radiating unit 608a at both ends in the longitudinal direction of the heat radiating member 608 is provided with vent openings 611g on both sides.

図72は、本発明の実施の形態7の変形例にかかる照明装置651の下方斜視図である。図73は、照明装置651の分解図である。照明装置651は、実施の形態4の変形例にかかる照明装置351と同様に、発光手段13に代えて発光手段313を熱拡散部材605の中央に取り付けたものである。これにより、照明装置351と同様に、低コストかつ配光特性の良好な照明装置651を得ることができる。   FIG. 72 is a lower perspective view of an illumination device 651 according to a modification of the seventh embodiment of the present invention. FIG. 73 is an exploded view of the lighting device 651. The illuminating device 651 is obtained by attaching a light emitting unit 313 at the center of the heat diffusing member 605 instead of the light emitting unit 13, similarly to the illuminating device 351 according to the modification of the fourth embodiment. Thereby, similarly to the illumination device 351, the illumination device 651 having low cost and good light distribution characteristics can be obtained.

以上説明した実施の形態7によれば、複数の放熱部610が、受熱部609の平面視で等間隔に整列している。よって、各放熱部610の冷却風の流路間隔が等しくなり、冷却効率を高める効果がある。   According to the seventh embodiment described above, the plurality of heat radiating portions 610 are arranged at equal intervals in a plan view of the heat receiving portion 609. Therefore, the cooling air flow path intervals of the heat radiating portions 610 are equalized, and the cooling efficiency is improved.

熱拡散部材605は、複数の放熱部材608の間に、通気開口611gを有する。これにより、放熱部材608の間においても放熱部610への冷却風の流入経路が形成され、冷却効率を高めることができる。   The heat diffusing member 605 has ventilation openings 611g between the plurality of heat radiating members 608. Thereby, the inflow path of the cooling air to the heat radiation part 610 is formed between the heat radiation members 608, and the cooling efficiency can be improved.

熱拡散部材605に最も近い側の換気口617は、熱拡散部材605の平面視において少なくとも1つの放熱部610と重なる。熱拡散部材605の平面視における換気口617の配置についてみると、最も外周側の換気口617は、熱拡散部材605の通気開口611g、611h、611iの外周側端部よりも、内側に配置されている。これにより、通気開口611g、611h、611iから流入した冷却風が自然対流で上昇しながら外周側から中央側に向かう。このような気流により、中央側に配置される放熱部610へ冷却風を供給でき、冷却効率を高めることができる。   The ventilation port 617 on the side closest to the heat diffusing member 605 overlaps at least one heat radiating portion 610 in a plan view of the heat diffusing member 605. Looking at the arrangement of the ventilation holes 617 in a plan view of the heat diffusion member 605, the outermost ventilation holes 617 are arranged on the inner side of the outer peripheral side ends of the ventilation openings 611g, 611h, 611i of the heat diffusion member 605. ing. Thereby, the cooling air flowing in from the ventilation openings 611g, 611h, and 611i rises by natural convection and moves from the outer peripheral side to the central side. With such an air flow, the cooling air can be supplied to the heat radiating unit 610 disposed on the center side, and the cooling efficiency can be increased.

防汚部材604は、熱拡散部材605の側の端部から反対側の端部にかけて傾斜する4個の傾斜面を備えている。4個の傾斜面はそれぞれ台形であり、その表面には通風可能な換気口617が複数個設けられている。それぞれの換気口617には、庇部618が設けられている。筐体602への塵埃侵入を庇部618が防ぐことで、信頼性が高まるとともに製品寿命を長くすることができる。   The antifouling member 604 includes four inclined surfaces that are inclined from the end portion on the heat diffusion member 605 side to the opposite end portion. Each of the four inclined surfaces has a trapezoidal shape, and a plurality of ventilation holes 617 that allow ventilation are provided on the surface. Each ventilation port 617 is provided with a flange 618. By preventing the intrusion of dust into the housing 602 by the flange 618, the reliability can be increased and the product life can be extended.

防汚部材604の上面視で、換気口617は少なくとも一つの放熱部610と重なる。これにより、冷却風の排気がスムーズになされ、冷却効率を高めることができる。   In the top view of the antifouling member 604, the ventilation port 617 overlaps with at least one heat radiating unit 610. Thereby, the cooling air is exhausted smoothly, and the cooling efficiency can be increased.

防汚部材604の上面視で、通気開口611g、611h、611iそれぞれの外側端部よりも熱拡散部材605の中央側において、換気口617が通気開口611g、611h、611iと重なる。これにより、熱拡散部材705の中央側に配置された放熱部610の冷却効率を高めることができ、発光手段13を高発光効率・長寿命とする効果がある。   In the top view of the antifouling member 604, the ventilation port 617 overlaps with the ventilation openings 611g, 611h, 611i on the center side of the heat diffusion member 605 with respect to the outer ends of the ventilation openings 611g, 611h, 611i. Thereby, the cooling efficiency of the thermal radiation part 610 arrange | positioned at the center side of the thermal-diffusion member 705 can be improved, and there exists an effect which makes the light emission means 13 high luminous efficiency and long life.

実施の形態8.
図74〜71は、本発明の実施の形態8にかかる照明装置701を示す図である。以下、実施の形態1〜7とは異なる部分を中心に、照明装置701を説明する。照明装置701は、照明装置601と同じく、上面視の外形が四角形である。
Embodiment 8 FIG.
74 to 71 are diagrams showing an illumination device 701 according to the eighth embodiment of the present invention. Hereinafter, the illumination device 701 will be described with a focus on portions different from those of the first to seventh embodiments. The illumination device 701 has a quadrangular outer shape in a top view, like the illumination device 601.

図74は、本発明の実施の形態8にかかる照明装置701の下方斜視図である。図75は、照明装置701の上方斜視図である。図76は、照明装置701の分解斜視図である。前述した実施の形態1にかかる防汚部材4は、複数の円盤状の防汚部材4a〜4eを中央の柱部3aに固定するものである。これに対し、実施の形態8にかかる防汚部材704は、板材を略コの字状に折り曲げた防汚部材704a〜704dを積み重ねて形成されたものであり、最上部の防汚部材704dは柱部3aに固定されている。また、前述した実施の形態1にかかる筐体2は、内部が空洞な円柱状の1つの部材である。これに対し、実施の形態8では、対向する2つの面からなる筐体部702aと、同じく対向する2つの面からなる筐体部702bとを組み合わせることで筐体を形成している。   FIG. 74 is a lower perspective view of the illumination device 701 according to the eighth embodiment of the present invention. FIG. 75 is an upper perspective view of the lighting device 701. FIG. 76 is an exploded perspective view of the lighting device 701. The antifouling member 4 according to the first embodiment described above fixes a plurality of disc-like antifouling members 4a to 4e to the central column portion 3a. On the other hand, the antifouling member 704 according to the eighth embodiment is formed by stacking antifouling members 704a to 704d obtained by folding plate materials into a substantially U shape, and the uppermost antifouling member 704d is It is fixed to the column part 3a. Moreover, the housing | casing 2 concerning Embodiment 1 mentioned above is one column-shaped member with a hollow inside. On the other hand, in the eighth embodiment, a housing is formed by combining a housing portion 702a composed of two opposing surfaces and a housing portion 702b composed of two opposing surfaces.

実施の形態8においても、実施の形態7と同様に、四角形の平面を有する熱拡散部材705に、4個の放熱部材708を平行に並べて複数配置している。それぞれの放熱部材708は、互いに対向して並ぶ2列の放熱部710と、これらの放熱部710で挟まれた受熱部709を備えている。また、1個の放熱部材708で2個の発光手段13を冷却しており、同じ8個の発光手段13を備える実施の形態1と比べて半分の数の放熱部材で冷却を行っている。   In the eighth embodiment, similarly to the seventh embodiment, a plurality of four heat radiating members 708 are arranged in parallel on a heat diffusing member 705 having a rectangular plane. Each heat radiating member 708 includes two rows of heat radiating portions 710 arranged opposite to each other, and a heat receiving portion 709 sandwiched between these heat radiating portions 710. In addition, two light emitting means 13 are cooled by one heat radiating member 708, and cooling is performed by half the number of heat radiating members as compared with the first embodiment including the same eight light emitting means 13.

照明装置701は、発光手段13を動作させるための電源回路基板723を備えている。この電源回路基板723は、電源回路収納部722に収納されている。電源回路収納部722は、熱拡散部材705から最も遠い位置にある防汚部材704dに取り付けられる。発光手段13と電源回路基板723は、図示しない配線で接続されている。   The lighting device 701 includes a power circuit board 723 for operating the light emitting means 13. The power circuit board 723 is housed in the power circuit housing section 722. The power supply circuit housing portion 722 is attached to the antifouling member 704d located farthest from the heat diffusion member 705. The light emitting means 13 and the power circuit board 723 are connected by a wiring (not shown).

発光手段13と放熱部材708以外は照明装置701と同じ構成で、発光手段13を4個とし放熱部材708を2個としてもよい。具体的には、照明装置701における4個の放熱部材708から、真ん中の2個の放熱部材708を取り除いてもよい。このようにすることで、照明装置701と比較して約1/2の光束クラスの照明装置を構成することができる。部品を共通化および標準化しながら複数の光束クラスの照明装置をラインアップでき、金型等の製造設備への投資を抑制でき、照明装置を低コスト化できる。   Except for the light emitting means 13 and the heat radiating member 708, the configuration is the same as that of the lighting device 701, and the number of the light emitting means 13 may be four and the number of the heat radiating members 708 may be two. Specifically, the two heat radiating members 708 in the middle may be removed from the four heat radiating members 708 in the lighting device 701. By doing in this way, it is possible to configure an illumination device having a luminous flux class that is approximately ½ that of the illumination device 701. It is possible to line up lighting devices of a plurality of luminous flux classes while standardizing and standardizing parts, so that investment in manufacturing equipment such as molds can be suppressed, and the cost of lighting devices can be reduced.

図77は、放熱部材708の三面図と斜視図を示す。図77(a)は、放熱部材708の斜視図である。図77(b)〜(d)は、放熱部材708の三面図である。放熱部材708の形状は実施の形態3にかかる放熱部材208とほぼ同様である。しかし、放熱部材708では長手方向の放熱ユニット708aの個数が9個であり、放熱部材208よりも放熱ユニットの個数が4つほど多い。   FIG. 77 shows a trihedral view and a perspective view of the heat dissipation member 708. FIG. 77A is a perspective view of the heat dissipation member 708. 77 (b) to 77 (d) are three views of the heat dissipation member 708. FIG. The shape of the heat dissipation member 708 is substantially the same as that of the heat dissipation member 208 according to the third embodiment. However, in the heat radiating member 708, the number of heat radiating units 708a in the longitudinal direction is nine, and the number of heat radiating units is about four more than that of the heat radiating member 208.

図78は、照明装置701をその中心軸に沿って切断した断面図である。図79および図80は、照明装置701をその高さ方向の異なる位置でスライスした断面を見下ろした断面図である。図79および図80の断面A8、B8は、図78に示した断面A8、B8が指し示す位置とそれぞれ対応している。特に、図71は、照明装置601から防汚部材604を取り外して上方から見下ろした図である。図81は照明装置701の上面図である。   FIG. 78 is a cross-sectional view of the lighting device 701 cut along its central axis. 79 and 80 are cross-sectional views looking down on a cross section of the lighting device 701 sliced at different positions in the height direction. 79 and 80 correspond to the positions indicated by the cross sections A8 and B8 shown in FIG. 78, respectively. In particular, FIG. 71 is a view of the antifouling member 604 removed from the lighting device 601 and looking down from above. FIG. 81 is a top view of the lighting device 701.

なお、照明装置701では2個の発光手段13を一組として四方に配置した。しかしながら、本発明はこれに限られない。変形例として、8個の発光手段13を、熱拡散部材705の中心から等距離かつ等角度で放射状に配置してもよい。この場合、熱拡散部材705の平面視で、それぞれの発光手段13が、放熱部材708の少なくとも一部に重なることが好ましい。この変形例の配置によれば、配光特性を優先することができる。   In the lighting device 701, the two light emitting means 13 are arranged in four directions as a set. However, the present invention is not limited to this. As a modification, the eight light emitting means 13 may be radially arranged at the same distance and at the same angle from the center of the heat diffusion member 705. In this case, each light emitting unit 13 preferably overlaps at least a part of the heat radiating member 708 in a plan view of the heat diffusing member 705. According to the arrangement of this modification, priority can be given to light distribution characteristics.

図79に示すように、熱拡散部材705の上に配置された複数の放熱部材708は、次のような規則で並べられている。間隔S4は、1つの放熱部材708の直近の2つの放熱部710の間隔である。4個の放熱部材708は、間隔S5を置きつつ平行に並んでいる。間隔S4と間隔S5は等しくされている。これにより、全ての放熱部710の間の流路隙間が均一化され、冷却効率が高まる。また、2つの放熱部710の中央線CHに沿って、他の放熱部材708の放熱部710が、同一面上に等間隔を空けて並ぶ。   As shown in FIG. 79, the plurality of heat radiation members 708 arranged on the heat diffusion member 705 are arranged according to the following rule. The interval S4 is the interval between the two heat radiating portions 710 immediately adjacent to one heat radiating member 708. The four heat radiating members 708 are arranged in parallel with the interval S5. The interval S4 and the interval S5 are equal. Thereby, the flow path gap between all the thermal radiation parts 710 is equalized, and cooling efficiency increases. Further, along the center line CH of the two heat radiating portions 710, the heat radiating portions 710 of the other heat radiating members 708 are arranged at equal intervals on the same surface.

熱拡散部材705は、複数の放熱部材708の間に、通気開口711gを有している。通気開口711gは、2個の放熱部材708の端部間に通風可能である。これにより、放熱部材708の間への冷却風の流入経路が形成され冷却効率を高めることができる。   The heat diffusing member 705 has a ventilation opening 711g between the plurality of heat radiating members 708. The ventilation opening 711g can ventilate between the end portions of the two heat dissipating members 708. Thereby, the inflow path | route of the cooling air between the heat radiating members 708 is formed, and cooling efficiency can be improved.

2つの発光手段13は、熱拡散部材705の平面視で1つの放熱部材708と重なる。1個の放熱部材708で2個の発光手段13を分散して冷却することができる。放熱部材708は、熱拡散部材705の中央をまたいで両端部側まで伸びるほどに長尺の部材とされている。これにより、複数の放熱部材708を熱拡散部材705における一方の辺からその反対側の辺に向かって一方向に並べて配置するだけで、高い冷却性能を確保することができる。   The two light emitting means 13 overlap with one heat radiating member 708 in a plan view of the heat diffusing member 705. The two light emitting means 13 can be dispersed and cooled by one heat radiating member 708. The heat dissipating member 708 is a long member that extends across the center of the heat diffusing member 705 to both ends. Thereby, a high cooling performance can be ensured only by arranging the plurality of heat dissipating members 708 side by side in one direction from one side of the heat diffusing member 705 to the opposite side.

また、照明装置701は防汚部材704a〜704dを備え、最も下方の防汚部材704aは熱拡散部材705とともに放熱部材708を挟む。防汚部材704a〜704dは互いの間に通風可能な通風隙間15を備えており、この通風隙間15が複数配置される。防汚部材704a〜704cの面内に通風可能な通気開口711a〜711cが設けられている。このようにすることで、熱拡散部材705及び放熱部材708からの冷却に伴う上昇気流を、防汚部材704a〜704dの間に設けた通風隙間15に導くことができる。通風隙間15に、照明装置701の内部の排気を分割して流すことができる。   The lighting device 701 includes antifouling members 704a to 704d, and the lowermost antifouling member 704a sandwiches the heat radiating member 708 together with the heat diffusing member 705. The antifouling members 704a to 704d have ventilation gaps 15 that allow ventilation between them, and a plurality of ventilation gaps 15 are arranged. Ventilation openings 711a to 711c that allow ventilation are provided in the surfaces of the antifouling members 704a to 704c. By doing in this way, the updraft accompanying cooling from the thermal diffusion member 705 and the heat radiating member 708 can be guided to the ventilation gap 15 provided between the antifouling members 704a to 704d. Exhaust gas inside the lighting device 701 can be divided and passed through the ventilation gap 15.

防汚部材704b、704c、704dの外周縁は、熱拡散部材705の平面視において、直下に位置する通気開口711a、711b、711cの外周よりも一回り大きくされており外側に突出している。上方からの塵埃等が通気開口711a、711b、711cから筐体部702a、702bの内側に入って放熱部710等に付着することを抑制できる。   The outer peripheral edges of the antifouling members 704b, 704c, and 704d are made slightly larger than the outer peripheries of the ventilation openings 711a, 711b, and 711c located immediately below in the plan view of the heat diffusion member 705 and protrude outward. It can be suppressed that dust or the like from above enters the inside of the housing portions 702a and 702b through the ventilation openings 711a, 711b, and 711c and adheres to the heat dissipation portion 710 and the like.

防汚部材704b〜704dそれぞれの支持部712は、熱拡散部材5の平面視において、それぞれの直下に位置する通気開口711a〜711cには全く重ならないか或いは部分的にのみ重なるようになっている。これにより、放熱部材708からの自然対流による冷却風の流れおよび複数の防汚部材704a〜704dを通過する排気の流れが妨げられない。従って、少ない圧力損失で筐体部702a、702bの内側から外側への排気を行うことができる。その結果、冷却効率を高めることができる。   The support portions 712 of the antifouling members 704b to 704d do not overlap at all or only partially overlap with the ventilation openings 711a to 711c located immediately below the support portions 712 in the plan view of the heat diffusion member 5, respectively. . Thereby, the flow of the cooling air by the natural convection from the heat radiating member 708 and the flow of the exhaust gas passing through the plurality of antifouling members 704a to 704d are not hindered. Therefore, exhaust from the inside to the outside of the housing portions 702a and 702b can be performed with a small pressure loss. As a result, the cooling efficiency can be increased.

電源回路収納部722は、熱拡散部材705から最も遠い位置にある防汚部材704dに取り付けられる。このため、放熱部710からの上昇気流の流れを電源回路基板723が阻害しない。よって冷却風の排気を良好とし、冷却効率を高める効果がある。   The power supply circuit housing portion 722 is attached to the antifouling member 704d located farthest from the heat diffusion member 705. For this reason, the power supply circuit board 723 does not obstruct the flow of the rising airflow from the heat radiation part 710. Therefore, there is an effect of improving the cooling efficiency by improving the exhaust of the cooling air.

また、図78の断面図からもわかるように、電源回路収納部722は、その直下の防汚部材704cが有する通気開口711cの上に配置されている。通気開口711cからの上昇気流が、電源回路収納部722の熱を奪いつつ、側方にある通風隙間15を介して照明装置701の外部へと排出される。電源回路収納部722に冷却風が接触することで、電源回路基板723も冷却される。よって電源回路基板723に搭載した電子部品が冷却され、それらの電子部品が熱により劣化することを抑制することができる。それらの電子部品の劣化を抑制することで寿命が延び、また冷却により安定動作が確保できるので、照明装置701の品質を高める効果がある。また、電源回路基板723を照明装置701に内蔵することにより、建築物に取付施工する際に、電源回路を別体にした照明装置と比べて施工および配線工事の手間が軽減される。   In addition, as can be seen from the cross-sectional view of FIG. 78, the power circuit housing portion 722 is disposed on the ventilation opening 711c of the antifouling member 704c immediately below the power circuit housing portion 722. The ascending airflow from the ventilation opening 711c is exhausted to the outside of the lighting device 701 through the ventilation gap 15 on the side while taking heat from the power circuit housing portion 722. When the cooling air comes into contact with the power circuit housing portion 722, the power circuit board 723 is also cooled. Therefore, the electronic components mounted on the power circuit board 723 are cooled, and the electronic components can be prevented from being deteriorated by heat. By suppressing the deterioration of these electronic components, the life is extended, and stable operation can be secured by cooling, so that there is an effect of improving the quality of the lighting device 701. In addition, by incorporating the power supply circuit board 723 in the lighting device 701, when mounting and constructing the building, the labor of construction and wiring work is reduced as compared with a lighting device having a separate power supply circuit.

図82は、本発明の実施の形態8の変形例にかかる照明装置851の下方斜視図である。図83は、照明装置751の分解図である。照明装置751は、実施の形態4の変形例にかかる照明装置351と同様に、発光手段13に代えて発光手段313を熱拡散部材705の中央に取り付けたものである。これにより、照明装置351と同様に、低コストかつ配光特性の良好な照明装置751を得ることができる。   FIG. 82 is a lower perspective view of an illuminating device 851 according to a modification of the eighth embodiment of the present invention. FIG. 83 is an exploded view of the lighting device 751. The illuminating device 751 is obtained by attaching a light emitting unit 313 in the center of the heat diffusing member 705 instead of the light emitting unit 13, similarly to the illuminating device 351 according to the modification of the fourth embodiment. Thereby, similarly to the illuminating device 351, the illuminating device 751 with low cost and favorable light distribution characteristics can be obtained.

なお、上述した各実施の形態にかかる照明装置1〜751においては、筐体の形状が円柱状または四角柱状であったが、本発明はこれに限られない。四角柱以外でも、例えば三角柱、五角柱、六角柱、八角柱あるいはそれ以上の多角柱状の筐体であってもよい。また、楕円柱状の筐体でもよい。   In addition, in the illuminating devices 1 to 751 according to the above-described embodiments, the shape of the housing is a columnar shape or a quadrangular prism shape, but the present invention is not limited to this. Other than the quadrangular prism, for example, a triangular prism, pentagonal prism, hexagonal prism, octagonal prism, or a polygonal prism-like casing may be used. Moreover, an elliptical columnar housing may be used.

1 照明装置、2 筐体、3 取付部、3a 支柱、4、4a、4b、4c、4d、4e 防汚部材、5 熱拡散部材、6 反射体、6a 開口、7 透光体、8 放熱部材、8a 放熱ユニット、9 受熱部、10 放熱部、11a、11b、11c、11d、11g 通気開口、11ac 切欠段部、12a、12b、12c、12d 支持部、13 発光手段、14 発光部、15 通風隙間、30、31 切り目、32、33 折り目 DESCRIPTION OF SYMBOLS 1 Illuminating device, 2 housing | casing, 3 attaching part, 3a support | pillar 4,4a, 4b, 4c, 4d, 4e Antifouling member, 5 thermal diffusion member, 6 reflector, 6a opening, 7 translucent body, 8 heat radiating member , 8a Heat radiation unit, 9 heat receiving part, 10 heat radiation part, 11a, 11b, 11c, 11d, 11g ventilation opening, 11ac notch step part, 12a, 12b, 12c, 12d support part, 13 light emitting means, 14 light emitting part, 15 ventilation Gap, 30, 31 cut, 32, 33 crease

Claims (21)

発光手段と、
板状の受熱部と、前記受熱部の一辺の側および前記一辺の側の反対側の他辺の側それぞれに複数個ずつ並ぶように前記受熱部から折れ曲がった複数の放熱部と、を有し、前記一辺の側に並ぶ前記放熱部と前記他辺の側に並ぶ前記放熱部との間隔が前記放熱部の長さよりも短い放熱部材と、
一方の面および前記一方の面の反対の他方の面を有し、前記一方の面に前記発光手段が取り付けられ、前記他方の面に前記受熱部が取り付けられた熱拡散部材と、
を備え
前記複数の前記放熱部は、
前記受熱部の前記一辺の側における端から折れ曲がった第1放熱部と、
前記第1放熱部の隣において前記受熱部の前記一辺の側における端から折れ曲がった第2放熱部と、
前記第2放熱部のさらに隣において前記受熱部の前記一辺の側における端から折れ曲がった第3放熱部と、
を含み、
前記第1放熱部と前記受熱部との間の第1折り目部および前記第3放熱部と前記受熱部との間の第3折り目部よりも、前記第2放熱部と前記受熱部との間の第2折り目部が前記一辺の側に突き出るように前記第1〜第3放熱部が前記受熱部から折れ曲がっており、
前記複数の放熱部は、さらに、
前記第1放熱部と予め設定した所定間隔を挟んで向かい合うように、前記受熱部の前記他辺の側における端から折れ曲がった第4放熱部と、
前記第2放熱部と前記所定間隔を挟んで向かい合うように、前記第4放熱部の隣において前記受熱部の前記他辺の側における端から折れ曲がった第5放熱部と、
前記第3放熱部と前記所定間隔を挟んで向かい合うように、前記第5放熱部のさらに隣において前記受熱部の前記他辺の側における端から折れ曲がった第6放熱部と、
を含む照明装置。
Light emitting means;
A plate-shaped heat receiving portion, and a plurality of heat radiating portions bent from the heat receiving portion so as to be arranged in plural on each side of the one side of the heat receiving portion and on the other side opposite to the one side. A heat radiating member in which an interval between the heat radiating portion arranged on the one side and the heat radiating portion arranged on the other side is shorter than a length of the heat radiating portion ;
A heat diffusion member having one surface and the other surface opposite to the one surface, wherein the light emitting means is attached to the one surface, and the heat receiving portion is attached to the other surface;
Equipped with a,
The plurality of heat radiating portions are:
A first heat radiating portion bent from an end on the one side of the heat receiving portion;
A second heat dissipating part bent from an end on the one side of the heat receiving part next to the first heat dissipating part;
A third heat dissipating part that is bent from an end of the heat receiving part on the side of the one side next to the second heat dissipating part;
Including
Rather than the first fold part between the first heat radiating part and the heat receiving part and the third fold part between the third heat radiating part and the heat receiving part, it is between the second heat radiating part and the heat receiving part. The first to third heat radiating portions are bent from the heat receiving portion so that the second fold portion of the second fold portion protrudes toward the one side.
The plurality of heat dissipating parts further includes:
A fourth heat dissipating part bent from an end on the other side of the heat receiving part so as to face the first heat dissipating part across a predetermined interval,
A fifth heat dissipating part bent from an end on the other side of the heat receiving part adjacent to the fourth heat dissipating part so as to face the second heat dissipating part across the predetermined interval;
A sixth heat radiating portion bent from an end on the other side of the heat receiving portion further adjacent to the fifth heat radiating portion so as to face the third heat radiating portion across the predetermined interval;
Including lighting device.
発光手段と、
板状の受熱部と、前記受熱部の一辺の側および前記一辺の側の反対側の他辺の側それぞれに複数個ずつ並ぶように前記受熱部から折れ曲がった複数の放熱部と、を有し、前記一辺の側に並ぶ前記放熱部と前記他辺の側に並ぶ前記放熱部との間隔が前記放熱部の長さよりも短い放熱部材と、
一方の面および前記一方の面の反対の他方の面を有し、前記一方の面に前記発光手段が取り付けられ、前記他方の面に前記受熱部が取り付けられた熱拡散部材と、
を備え、
前記複数の前記放熱部は、
前記受熱部の前記一辺の側における端から折れ曲がった第1放熱部と、
前記第1放熱部の隣において前記受熱部の前記一辺の側における端から折れ曲がった第2放熱部と、
前記第2放熱部のさらに隣において前記受熱部の前記一辺の側における端から折れ曲がった第3放熱部と、
を含み、
前記第1放熱部と前記受熱部との間の第1折り目部よりも前記第2放熱部と前記受熱部との間の第2折り目部が前記一辺の側に突き出ており、かつ前記第2折り目部よりも前記第3放熱部と前記受熱部との間の第3折り目部が前記一辺の側に突き出るように、前記第1〜第3放熱部が前記受熱部から折れ曲がっており、
前記複数の放熱部は、さらに、
前記第1放熱部と予め設定した所定間隔を挟んで向かい合うように、前記受熱部の前記他辺の側における端から折れ曲がった第4放熱部と、
前記第2放熱部と前記所定間隔を挟んで向かい合うように、前記第4放熱部の隣において前記受熱部の前記他辺の側における端から折れ曲がった第5放熱部と、
前記第3放熱部と前記所定間隔を挟んで向かい合うように、前記第5放熱部のさらに隣において前記受熱部の前記他辺の側における端から折れ曲がった第6放熱部と、
を含む照明装置。
Light emitting means;
A plate-shaped heat receiving portion, and a plurality of heat radiating portions bent from the heat receiving portion so as to be arranged in plural on each side of the one side of the heat receiving portion and on the other side opposite to the one side. A heat radiating member in which an interval between the heat radiating portion arranged on the one side and the heat radiating portion arranged on the other side is shorter than a length of the heat radiating portion;
A heat diffusion member having one surface and the other surface opposite to the one surface, wherein the light emitting means is attached to the one surface, and the heat receiving portion is attached to the other surface;
With
The plurality of heat radiating portions are:
A first heat radiating portion bent from an end on the one side of the heat receiving portion;
A second heat dissipating part bent from an end on the one side of the heat receiving part next to the first heat dissipating part;
A third heat dissipating part that is bent from an end of the heat receiving part on the side of the one side next to the second heat dissipating part;
Including
The second fold portion between the second heat radiating portion and the heat receiving portion protrudes toward the one side than the first fold portion between the first heat radiating portion and the heat receiving portion, and the second The first to third heat radiating portions are bent from the heat receiving portion so that a third fold portion between the third heat radiating portion and the heat receiving portion protrudes to the side of the fold portion,
The plurality of heat dissipating parts further includes:
A fourth heat dissipating part bent from an end on the other side of the heat receiving part so as to face the first heat dissipating part across a predetermined interval,
A fifth heat dissipating part bent from an end on the other side of the heat receiving part adjacent to the fourth heat dissipating part so as to face the second heat dissipating part across the predetermined interval;
A sixth heat radiating portion bent from an end on the other side of the heat receiving portion further adjacent to the fifth heat radiating portion so as to face the third heat radiating portion across the predetermined interval;
Including lighting device.
前記受熱部は、平面視で細長の形状を備え、
一つの前記放熱部材の前記受熱部について、前記受熱部の平面視において前記受熱部を囲う長方形の外郭線が有する対向する2つの長辺に挟まれかつ前記受熱部の長手方向に伸びる仮想直線を設定した場合に、前記一つの前記放熱部材が有するそれぞれの前記放熱部が前記受熱部の平面視で前記仮想直線に対して45度をなすように傾けられた請求項記載の照明装置。
The heat receiving part has an elongated shape in plan view,
For the heat receiving portion of one heat radiating member, an imaginary straight line extending in the longitudinal direction of the heat receiving portion is sandwiched between two opposing long sides of a rectangular outline surrounding the heat receiving portion in plan view of the heat receiving portion. The lighting device according to claim 2 , wherein, when set, each of the heat radiating portions of the one heat radiating member is inclined so as to form 45 degrees with respect to the virtual straight line in a plan view of the heat receiving portion .
前記熱拡散部材の前記他方の面に複数の前記放熱部材が設けられ、
前記熱拡散部材は、前記複数の放熱部材の間に、前記一方の面と前記他方の面を貫通する通気開口を有する請求項1〜のいずれか1項に記載の照明装置。
A plurality of the heat radiating members are provided on the other surface of the heat diffusing member,
Said heat diffusion member is between the plurality of heat dissipating members, the lighting device according to any one of claims 1 to 3 having a vent opening through said one surface and said other surface.
発光手段と、
板状の受熱部と、前記受熱部の一辺の側および前記一辺の側の反対側の他辺の側それぞれに複数個ずつ並ぶように前記受熱部から折れ曲がった複数の放熱部と、を有し、前記一辺の側に並ぶ前記放熱部と前記他辺の側に並ぶ前記放熱部との間隔が前記放熱部の長さよりも短い放熱部材と、
一方の面および前記一方の面の反対の他方の面を有し、前記一方の面に前記発光手段が取り付けられ、前記他方の面に前記受熱部が取り付けられた熱拡散部材と、
を備え、
前記熱拡散部材の前記他方の面に複数の前記放熱部材が設けられ、
前記熱拡散部材は、前記複数の放熱部材の間に、前記一方の面と前記他方の面を貫通する通気開口を有し、
前記放熱部が内側表面と前記内側表面の反対側の外側表面とを備え、前記一辺の側に並ぶ前記放熱部の前記内側表面と前記他辺の側に並ぶ前記放熱部の前記内側表面とが向かい合い、
前記通気開口の縁と少なくとも1つの前記放熱部の前記外側表面とが段差無く揃う照明装置。
Light emitting means;
A plate-shaped heat receiving portion, and a plurality of heat radiating portions bent from the heat receiving portion so as to be arranged in plural on each side of the one side of the heat receiving portion and on the other side opposite to the one side. A heat radiating member in which an interval between the heat radiating portion arranged on the one side and the heat radiating portion arranged on the other side is shorter than a length of the heat radiating portion;
A heat diffusion member having one surface and the other surface opposite to the one surface, wherein the light emitting means is attached to the one surface, and the heat receiving portion is attached to the other surface;
With
A plurality of the heat radiating members are provided on the other surface of the heat diffusing member,
The heat diffusing member has a ventilation opening passing through the one surface and the other surface between the plurality of heat radiating members,
The heat dissipating part includes an inner surface and an outer surface opposite to the inner surface, and the inner surface of the heat dissipating part arranged on the one side and the inner surface of the heat dissipating part arranged on the other side. Facing each other
An illumination device in which an edge of the ventilation opening and the outer surface of at least one of the heat radiating portions are aligned without any step.
前記通気開口は、前記熱拡散部材の平面視において、前記放熱部材の外郭線よりも内側に凹む切欠部を有する請求項5に記載の照明装置。 The lighting device according to claim 5, wherein the ventilation opening has a notch that is recessed inward from an outline of the heat radiating member in a plan view of the heat diffusing member. 透光体、反射体、および発光手段取付部材のうち少なくとも1つを備え、
前記透光体、前記反射体、および前記発光手段取付部材の少なくとも1つが、前記熱拡散部材の平面視において前記通気開口と重ならず、かつ、前記熱拡散部材の一部を露出させるように、前記熱拡散部材の前記一方の面に取り付けられた請求項5または6項に記載の照明装置。
Comprising at least one of a translucent body, a reflector, and a light emitting means mounting member,
At least one of the light transmitting member, the reflector, and the light emitting means mounting member does not overlap the ventilation opening in a plan view of the heat diffusing member and exposes a part of the heat diffusing member. The lighting device according to claim 5 or 6 , attached to the one surface of the heat diffusion member.
発光手段と、
板状の受熱部と、前記受熱部の一辺の側および前記一辺の側の反対側の他辺の側それぞれに複数個ずつ並ぶように前記受熱部から折れ曲がった複数の放熱部と、を有し、前記一辺の側に並ぶ前記放熱部と前記他辺の側に並ぶ前記放熱部との間隔が前記放熱部の長さよりも短い放熱部材と、
一方の面および前記一方の面の反対の他方の面を有し、前記一方の面に前記発光手段が取り付けられ、前記他方の面に前記受熱部が取り付けられた熱拡散部材と、
を備え、
前記熱拡散部材の前記他方の面に複数の前記放熱部材が設けられ、
前記受熱部は、平面視で細長の形状を備え、
前記複数の放熱部材それぞれの受熱部について、前記受熱部の平面視において前記受熱部を囲う長方形の外郭線が有する対向する2つの長辺に挟まれかつ前記受熱部の長手方向に伸びる仮想直線を設定した場合に、
複数の前記受熱部に設定された前記仮想直線が前記熱拡散部材に設定された仮想円に接しつつ等しい角度を置いて前記熱拡散部材の面内で交差するように、前記複数の放熱部材が配置された照明装置。
Light emitting means;
A plate-shaped heat receiving portion, and a plurality of heat radiating portions bent from the heat receiving portion so as to be arranged in plural on each side of the one side of the heat receiving portion and on the other side opposite to the one side. A heat radiating member in which an interval between the heat radiating portion arranged on the one side and the heat radiating portion arranged on the other side is shorter than a length of the heat radiating portion;
A heat diffusion member having one surface and the other surface opposite to the one surface, wherein the light emitting means is attached to the one surface, and the heat receiving portion is attached to the other surface;
With
A plurality of the heat radiating members are provided on the other surface of the heat diffusing member,
The heat receiving part has an elongated shape in plan view,
For each heat receiving portion of the plurality of heat radiating members, a virtual straight line extending in the longitudinal direction of the heat receiving portion is sandwiched between two opposing long sides of a rectangular outline surrounding the heat receiving portion in plan view of the heat receiving portion. If set,
So as to intersect in the plane of the heat diffusion member and the imaginary straight line that is set to a plurality of said heat receiving portion is at an angle equal while in contact with the imaginary circle that is set on the heat diffusion member, the plurality of heat radiation lighting device member is disposed.
発光手段と、
板状の受熱部と、前記受熱部の一辺の側および前記一辺の側の反対側の他辺の側それぞれに複数個ずつ並ぶように前記受熱部から折れ曲がった複数の放熱部と、を有し、前記一辺の側に並ぶ前記放熱部と前記他辺の側に並ぶ前記放熱部との間隔が前記放熱部の長さよりも短い放熱部材と、
一方の面および前記一方の面の反対の他方の面を有し、前記一方の面に前記発光手段が取り付けられ、前記他方の面に前記受熱部が取り付けられた熱拡散部材と、
を備え、
前記放熱部材は、第1放熱ユニットおよび第2放熱ユニットを備え、
前記第1放熱ユニットは、向かい合う2つの前記放熱部と、前記受熱部における前記2つの前記放熱部で挟まれた第1部分とで構成され、
前記第2放熱ユニットは、前記受熱部における前記第1部分の隣の第2部分と、前記第2部分の片側にのみ設けられた前記放熱部と、で構成され、
複数の前記放熱部材が前記他方の面に放射状に配置され、前記放射状の中央側にそれぞれの前記放熱部材の前記第2放熱ユニットを設けた照明装置。
Light emitting means;
A plate-shaped heat receiving portion, and a plurality of heat radiating portions bent from the heat receiving portion so as to be arranged in plural on each side of the one side of the heat receiving portion and on the other side opposite to the one side. A heat radiating member in which an interval between the heat radiating portion arranged on the one side and the heat radiating portion arranged on the other side is shorter than a length of the heat radiating portion;
A heat diffusion member having one surface and the other surface opposite to the one surface, wherein the light emitting means is attached to the one surface, and the heat receiving portion is attached to the other surface;
With
The heat dissipation member includes a first heat dissipation unit and a second heat dissipation unit,
The first heat radiating unit includes two heat radiating portions facing each other, and a first portion sandwiched between the two heat radiating portions in the heat receiving portion,
The second heat radiating unit includes a second part adjacent to the first part in the heat receiving part, and the heat radiating part provided only on one side of the second part,
A plurality of said heat radiating member is arranged radially in said other surface, said radially each of the heat dissipation lighting apparatus provided with the second heat radiating unit member toward the center of the.
発光手段と、
板状の受熱部と、前記受熱部の一辺の側および前記一辺の側の反対側の他辺の側それぞれに複数個ずつ並ぶように前記受熱部から折れ曲がった複数の放熱部と、を有し、前記一辺の側に並ぶ前記放熱部と前記他辺の側に並ぶ前記放熱部との間隔が前記放熱部の長さよりも短い放熱部材と、
一方の面および前記一方の面の反対の他方の面を有し、前記一方の面に前記発光手段が取り付けられ、前記他方の面に前記受熱部が取り付けられた熱拡散部材と、
を備え、
前記受熱部は、端部に切欠部を備え、
前記熱拡散部材の平面視において、前記受熱部における前記切欠部の側の端部を前記熱拡散部材の中央側に向けて複数の前記放熱部材が放射状に配置され、
1つの前記放熱部材が有する前記受熱部の前記切欠部に対して、隣接する他の前記放熱部材が有する前記受熱部の端部がかみ合わされている照明装置。
Light emitting means;
A plate-shaped heat receiving portion, and a plurality of heat radiating portions bent from the heat receiving portion so as to be arranged in plural on each side of the one side of the heat receiving portion and on the other side opposite to the one side. A heat radiating member in which an interval between the heat radiating portion arranged on the one side and the heat radiating portion arranged on the other side is shorter than a length of the heat radiating portion;
A heat diffusion member having one surface and the other surface opposite to the one surface, wherein the light emitting means is attached to the one surface, and the heat receiving portion is attached to the other surface;
With
The heat receiving portion includes a notch at an end,
In a plan view of the heat diffusing member , a plurality of the heat radiating members are arranged radially with an end portion of the heat receiving portion on the side of the cutout portion directed toward the center side of the heat diffusing member .
With respect to the notch portion of the heat receiving portion having one of said heat radiating member, the other adjacent the heat dissipation member end portion of the heat receiving portion is engaged with the which do that lighting device.
前記熱拡散部材は、前記一方の面と前記他方の面を貫通する複数の通気開口を備え、
前記他方の面における前記複数の通気開口の間に、複数の前記放熱部材が設けられ、
前記熱拡散部材の平面視において前記複数の放熱部材と1つの前記発光手段とが重なる請求項1〜10のいずれか1項に記載の照明装置。
The heat diffusion member includes a plurality of ventilation openings penetrating the one surface and the other surface,
A plurality of the heat radiating members are provided between the plurality of ventilation openings on the other surface,
The lighting device according to any one of claims 1 to 10 , wherein the plurality of heat dissipating members and one light emitting unit overlap in a plan view of the heat diffusing member.
発光手段と、
板状の受熱部と、前記受熱部の一辺の側および前記一辺の側の反対側の他辺の側それぞれに複数個ずつ並ぶように前記受熱部から折れ曲がった複数の放熱部と、を有し、前記一辺の側に並ぶ前記放熱部と前記他辺の側に並ぶ前記放熱部との間隔が前記放熱部の長さよりも短い放熱部材と、
一方の面および前記一方の面の反対の他方の面を有し、前記一方の面に前記発光手段が取り付けられ、前記他方の面に前記受熱部が取り付けられた熱拡散部材と、
それぞれが盤状であり、前記熱拡散部材とともに前記放熱部材をはさむように前記放熱部材の上方に配置され、互いに重ねて設けられた複数の防汚部材と、
を備え、
前記複数の防汚部材は、
前記放熱部材の上に被せられた第1防汚部材と、
前記第1防汚部材の上に前記第1防汚部材と隙間を置きつつ重ねられた第2防汚部材と、
を含み、
前記第1防汚部材の面内には、前記第1防汚部材を厚さ方向に貫通した通風可能な第1通気開口が設けられ、
前記第2防汚部材の面内には、前記第2防汚部材を厚さ方向に貫通した通風可能な第2通気開口が設けられ、
前記第1通気開口における前記第1防汚部材外周側に、前記第2防汚部材の外周側部分が被さる照明装置。
Light emitting means;
A plate-shaped heat receiving portion, and a plurality of heat radiating portions bent from the heat receiving portion so as to be arranged in plural on each side of the one side of the heat receiving portion and on the other side opposite to the one side. A heat radiating member in which an interval between the heat radiating portion arranged on the one side and the heat radiating portion arranged on the other side is shorter than a length of the heat radiating portion;
A heat diffusion member having one surface and the other surface opposite to the one surface, wherein the light emitting means is attached to the one surface, and the heat receiving portion is attached to the other surface;
Each a is discoidal, it disposed with said heat diffusion member above the heat dissipating member so as to sandwich the heat radiating member, and a plurality of antifouling members provided one above the other,
With
The plurality of antifouling members are:
A first antifouling member placed on the heat dissipation member ;
A second antifouling member stacked on the first antifouling member while placing a gap with the first antifouling member;
Including
In the surface of the first antifouling member, there is provided a first vent opening that allows ventilation through the first antifouling member in the thickness direction,
In the surface of the second antifouling member, there is provided a second vent opening that allows ventilation through the second antifouling member in the thickness direction,
Wherein the first antifouling member outer peripheral side of the first vent opening, lighting device outer peripheral portion is Ru target is the second antifouling member.
前記第2防汚部材の縁が、前記第1通気開口における前記第1防汚部材外周側よりも、外側に突出している請求項12に記載の照明装置。 The lighting device according to claim 12 , wherein an edge of the second antifouling member projects outward from an outer peripheral side of the first antifouling member in the first ventilation opening . 前記第1防汚部材が前記第1通気開口を複数備えるとともに、隣り合う前記第1通気開口の間を伸びる第1支持部が備えられ、
前記第2防汚部材が前記第2通気開口を複数備えるとともに、隣り合う前記第2通気開口の間を伸びる第2支持部が備えられ、
前記熱拡散部材の平面視において前記第2支持部が前記第1通気開口と重ならない請求項12または13に記載の照明装置。
The first antifouling member includes a plurality of the first ventilation openings, and a first support portion extending between the adjacent first ventilation openings is provided.
The second antifouling member includes a plurality of the second ventilation openings, and a second support portion extending between the adjacent second ventilation openings is provided.
The lighting device according to claim 12 or 13 , wherein the second support portion does not overlap the first ventilation opening in a plan view of the heat diffusion member.
前記熱拡散部材は、通気開口を備え、
前記熱拡散部材とともに前記放熱部材をはさむ防汚部材を備え、
前記防汚部材の表面には通風可能な換気口が少なくとも1つ設けられ、
前記熱拡散部材に最も近い側の前記換気口は、前記熱拡散部材の平面視において少なくとも1つの前記放熱部と重なり、
前記換気口は、前記熱拡散部材の平面視において、前記熱拡散部材の前記通気開口の外周側端部よりも内側に配置されている請求項1〜11のいずれか1項に記載の照明装置。
The heat diffusion member includes a vent opening,
An antifouling member sandwiching the heat radiating member together with the heat diffusing member;
At least one ventilation port is provided on the surface of the antifouling member.
The ventilation port on the side closest to the heat diffusing member overlaps with at least one heat radiating portion in a plan view of the heat diffusing member,
The lighting device according to any one of claims 1 to 11 , wherein the ventilation port is disposed inside an outer peripheral side end of the ventilation opening of the heat diffusion member in a plan view of the heat diffusion member. .
前記熱拡散部材とともに前記放熱部材をはさむ防汚部材を備え、
前記防汚部材は、前記熱拡散部材の平面方向に第1の大きさを有する第1端部と、前記第1端部の反対側に設けられ前記熱拡散部材の平面方向に前記第1の大きさより小さい第2の大きさを有する第2端部と、前記第1端部から前記第2端部にかけて傾斜する表面と、を備え、その内部が空洞であり、
前記第1端部は前記熱拡散部材の側に設けられ、
前記表面には通風可能な換気口が設けられ、
前記換気口に庇部が設けられた請求項1〜11のいずれか1項に記載の照明装置。
An antifouling member sandwiching the heat radiating member together with the heat diffusing member;
The antifouling member is provided on a side opposite to the first end portion having a first size in the planar direction of the heat diffusing member and the first end portion in the planar direction of the heat diffusing member. A second end having a second size smaller than the size, and a surface inclined from the first end to the second end, the interior of which is a cavity,
The first end is provided on the heat diffusion member side,
The surface is provided with a ventilating vent that allows ventilation,
The lighting device according to any one of claims 1 to 11 , wherein a flange portion is provided in the ventilation port.
前記防汚部材の上面視で、前記換気口は少なくとも一つの前記放熱部と重なる請求項16に記載の照明装置。 The lighting device according to claim 16 , wherein the ventilation port overlaps at least one of the heat radiating portions in a top view of the antifouling member. 前記熱拡散部材は、通気開口を備え、
前記防汚部材の上面視で、前記通気開口の外側端部よりも前記熱拡散部材の中央側において前記換気口が前記通気開口と重なる請求項16または17に記載の照明装置。
The heat diffusion member includes a vent opening,
The lighting device according to claim 16 or 17 , wherein the ventilation port overlaps with the ventilation opening at a center side of the heat diffusion member with respect to an outer end of the ventilation opening in a top view of the antifouling member.
電源回路を備え、
前記電源回路は、前記防汚部材における前記熱拡散部材から最も遠い部位に設けられた請求項1218のいずれか1項に記載の照明装置。
With power supply circuit,
The lighting device according to any one of claims 12 to 18 , wherein the power supply circuit is provided in a part of the antifouling member farthest from the heat diffusion member.
発光手段は、チップ・オン・ボードタイプのLED光源である請求項1〜19のいずれか1項に記載の照明装置。 The illumination device according to any one of claims 1 to 19 , wherein the light emitting means is a chip-on-board type LED light source. 発光手段は、回路配線基板に複数のLED光源が実装されたLED光源基板である請求項1〜19のいずれか1項に記載の照明装置。 The illumination device according to any one of claims 1 to 19 , wherein the light emitting means is an LED light source substrate in which a plurality of LED light sources are mounted on a circuit wiring board.
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