JP5988219B2 - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
JP5988219B2
JP5988219B2 JP2013016922A JP2013016922A JP5988219B2 JP 5988219 B2 JP5988219 B2 JP 5988219B2 JP 2013016922 A JP2013016922 A JP 2013016922A JP 2013016922 A JP2013016922 A JP 2013016922A JP 5988219 B2 JP5988219 B2 JP 5988219B2
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Prior art keywords
light emitting
emitting unit
lighting device
power supply
housing
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JP2014149946A (en
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山岡　裕幸
裕幸 山岡
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Priority to JP2013016922A priority Critical patent/JP5988219B2/en
Priority to PCT/JP2013/006866 priority patent/WO2014118839A1/en
Priority to CN201390000967.9U priority patent/CN204693346U/en
Publication of JP2014149946A publication Critical patent/JP2014149946A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • F21V21/03—Ceiling bases, e.g. ceiling roses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/006—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate being distinct from the light source holder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Description

本発明は、ＬＥＤ（Ｌｉｇｈｔ Ｅｍｉｔｔｉｎｇ Ｄｉｏｄｅ）等の発光素子を光源として備える照明装置に関する。   The present invention relates to a lighting device including a light emitting element such as an LED (Light Emitting Diode) as a light source.

ＬＥＤ等の発光素子を光源として備える照明装置の一例として、図９に示すような照明装置８００がある（特許文献１）。照明装置８００は、複数のＬＥＤ発光素子８２８を有する発光部８１２と、当該発光部８１２に電力を供給する電源回路８１３とを備える。発光部８１２と、電源回路８１３とは、天井等の造営材の一面に直交する方向に配置されている。   As an example of a lighting device including a light emitting element such as an LED as a light source, there is a lighting device 800 as shown in FIG. 9 (Patent Document 1). The lighting device 800 includes a light emitting unit 812 having a plurality of LED light emitting elements 828 and a power supply circuit 813 that supplies power to the light emitting unit 812. The light emitting unit 812 and the power supply circuit 813 are arranged in a direction orthogonal to one surface of a construction material such as a ceiling.

このような照明装置は、例えば、造営材に設置された取付部材を介して、取り付けられている。   Such an illuminating device is attached, for example, via an attachment member installed on the construction material.

特開２０１１−２４３５１１号公報JP 2011-243511 A

天井等の造営材に取り付けられた照明装置は、圧迫感を避けるために、薄さ、すなわち、造営材の一面に直交する方向の幅が小さいことが求められる。しかし、従来の発光部と電源回路とを造営材の一面に直交する方向に配置する装置構成で薄型化を図った場合、発光部と電源回路との距離を十分に確保できない。このため、発光部で生じた熱が電源回路に伝達しやすく、電源回路の温度が高くなってしまう。電源回路において通常使われる電解コンデンサ等の熱に弱い電子部品は、高温になると急速に劣化するため、照明装置の寿命の低下につながる。   The lighting device attached to a construction material such as a ceiling is required to have a small thickness, that is, a width in a direction perpendicular to one surface of the construction material in order to avoid a feeling of pressure. However, in the case where the conventional light emitting unit and the power supply circuit are arranged in a direction orthogonal to one surface of the construction material and the thickness is reduced, a sufficient distance between the light emitting unit and the power supply circuit cannot be secured. For this reason, the heat generated in the light emitting part is easily transferred to the power supply circuit, and the temperature of the power supply circuit is increased. Electronic components that are weak against heat, such as electrolytic capacitors that are normally used in power supply circuits, deteriorate rapidly when the temperature rises, leading to a reduction in the lifetime of the lighting device.

本発明は、上記の事情に鑑みなされたものであり、薄型かつ放熱性に優れた照明装置を提供することを目的とする。   This invention is made | formed in view of said situation, and it aims at providing the illuminating device which was thin and excellent in heat dissipation.

上記目的を達成するため、本発明の一態様である照明装置は、発光部と、当該発光部に電力を供給する電源回路と、前記発光部と前記電源回路とを収容する筐体と、造営材の一面に設置される取付部材とを備える照明装置であって、前記電源回路は、前記発光部に対して、前記造営材の一面に沿った方向に配置され、前記筐体と前記取付部材とは、前記発光部と前記電源回路との間の領域で熱的に接続されている構成とする。   In order to achieve the above object, a lighting device according to one embodiment of the present invention includes a light-emitting portion, a power supply circuit that supplies power to the light-emitting portion, a housing that houses the light-emitting portion and the power supply circuit, An illumination device including an attachment member installed on one surface of the material, wherein the power supply circuit is disposed in a direction along the one surface of the construction material with respect to the light emitting unit, and the housing and the attachment member Is configured to be thermally connected in a region between the light emitting unit and the power supply circuit.

また、本発明の別の態様として、前記筐体は、有底筒状であり、底壁の一部に開口部が形成されている主部と、前記開口部の周縁に連続し、前記造営材側に没入している窪み部とを有し、前記窪み部の内に、前記発光部が配置され、前記主部と前記窪み部の側壁とで囲まれた領域に、前記電源回路が配置されている構成とすることもできる。
また、本発明の別の態様として、前記取付部材に前記筐体を締結する締結部材をさらに備え、前記筐体と前記取付部材との熱的な接続は、前記締結部材を介して実現されている構成とすることもできる。 Further, as another aspect of the present invention, the casing is in the shape of a bottomed cylinder, and is continuous with a main part having an opening formed in a part of a bottom wall, and a peripheral edge of the opening. A recess portion which is immersed in the material side, the light emitting portion is disposed in the recess portion, and the power supply circuit is disposed in a region surrounded by the main portion and a sidewall of the recess portion. It can also be set as the structure currently made.
Moreover, as another aspect of the present invention, a fastening member that fastens the housing to the mounting member is further provided, and thermal connection between the housing and the mounting member is realized via the fastening member. It can also be set as the structure which is.

また、本発明の別の態様として、前記締結部材は、螺子であり、前記窪み部には、前記螺子を挿通するための挿通孔が設けられている構成とすることもできる。
また、本発明の別の態様として、前記螺子の頭部は、前記筐体と前記取付部材とが締結された状態において、前記発光部の照射面より低い位置にある構成とすることもできる。
また、本発明の別の態様として、前記取付部材は板状であり、その一部が前記造営材とは反対側に突出した突出部を有し、前記突出部には、前記螺子を螺合するための雌螺子部が設けられている構成とすることもできる。 As another aspect of the present invention, the fastening member may be a screw, and the recess may be provided with an insertion hole for inserting the screw.
Moreover, as another aspect of the present invention, the head of the screw may be configured to be at a position lower than the irradiation surface of the light emitting unit in a state where the casing and the attachment member are fastened.
As another aspect of the present invention, the mounting member is plate-shaped, and a part thereof has a protruding portion that protrudes on the opposite side to the construction material, and the screw is screwed into the protruding portion. It can also be set as the structure by which the female screw part for doing is provided.

また、本発明の別の態様として、前記窪み部は、前記造営材とは反対側に向かって径が漸増している構成とすることもできる。
また、本発明の別の態様として、前記取付部材の外周縁には、延出片が設けられており、前記主部の側壁には、上記延出片に嵌合する溝部が設けられている構成とすることもできる。 As another aspect of the present invention, the hollow portion may have a configuration in which the diameter gradually increases toward the side opposite to the construction material.
As another aspect of the present invention, an extending piece is provided on the outer peripheral edge of the mounting member, and a groove portion that is fitted to the extending piece is provided on the side wall of the main part. It can also be configured.

本発明の一態様である照明装置によれば、発光部と電源回路とが造営材の一面に沿った方向に配置され、発光部と電源回路との間の領域で、筐体と取付部材とが熱的に接続されている。このため、発光部で生じて筐体に伝達した熱は、発光部と電源回路との間の領域で、筐体から取付部材に伝達される。そして、取付部材に伝達した熱は、造営材内に拡散される。発光部から造営材への放熱径路に電源回路が配置されていないため、発光部で生じた熱が電源回路へ伝わりにくい。   According to the lighting device of one embodiment of the present invention, the light emitting unit and the power supply circuit are arranged in a direction along one surface of the construction material, and the housing and the attachment member are disposed in a region between the light emitting unit and the power supply circuit. Are thermally connected. For this reason, the heat generated in the light emitting unit and transmitted to the housing is transmitted from the housing to the mounting member in a region between the light emitting unit and the power supply circuit. The heat transmitted to the mounting member is diffused into the construction material. Since the power supply circuit is not arranged in the heat radiation path from the light emitting part to the construction material, the heat generated in the light emitting part is not easily transmitted to the power supply circuit.

また、発光部と電源回路とを造営材の一面に沿った方向に配置しているため、発光部と電源回路とを造営材の一面に直交する方向に配置する構成と比較して、発光部から造営材への放熱径路が短い。このため、発光部で生じた熱を効率よく造営材に逃がすことができる。
さらに、発光部と電源回路とを造営材の一面に沿った方向に配置しているため、薄型の照明装置を提供することができる。 In addition, since the light emitting unit and the power circuit are arranged in a direction along one surface of the construction material, the light emitting unit is compared with the configuration in which the light emitting unit and the power circuit are arranged in a direction orthogonal to one surface of the construction material. The heat radiation path from to the construction material is short. For this reason, the heat generated in the light emitting section can be efficiently released to the construction material.
Furthermore, since the light emitting unit and the power supply circuit are arranged in a direction along one surface of the construction material, a thin lighting device can be provided.

実施の形態１にかかる照明装置１の構成を示す斜視図である。1 is a perspective view illustrating a configuration of a lighting device 1 according to a first embodiment. 装置本体２００の裏面側の構成を示す斜視図である。3 is a perspective view showing a configuration of a back side of the apparatus main body 200. FIG. 装置本体２００の分解斜視図である。3 is an exploded perspective view of the apparatus main body 200. FIG. 天井４００に取り付けた状態での照明装置１を示す断面図である。It is sectional drawing which shows the illuminating device 1 in the state attached to the ceiling 400. FIG. 発光部２１３で発生した熱の放熱経路を示す模式図である。6 is a schematic diagram showing a heat dissipation path of heat generated in the light emitting unit 213. FIG. （ａ）は、比較例１にかかる照明装置における熱の流れを示した模式図であり、（ｂ）は、比較例２にかかる照明装置における熱の流れを示した模式図である。(A) is the schematic diagram which showed the heat flow in the illuminating device concerning the comparative example 1, (b) is the schematic diagram which showed the heat flow in the illuminating device concerning the comparative example 2. 実施の形態２にかかる照明装置５００を示す断面図である。It is sectional drawing which shows the illuminating device 500 concerning Embodiment 2. FIG. 実施の形態３にかかる照明装置６００を示す断面図である。It is sectional drawing which shows the illuminating device 600 concerning Embodiment 3. FIG. 従来技術にかかる照明装置の構成を示す断面図である。It is sectional drawing which shows the structure of the illuminating device concerning a prior art.

［実施の形態１］
本発明の実施の形態１にかかる照明装置１について、図１から図６を用いて説明する。
＜１． 照明装置１の概略構成＞
図１に示すように、本実施の形態１にかかる照明装置１は、天井４００の一面側に全体が取り付けられる照明装置であって、取付部材１００と、装置本体２００と、カバー３００とを有する。 [Embodiment 1]
A lighting apparatus 1 according to a first embodiment of the present invention will be described with reference to FIGS.
<1. Schematic configuration of lighting device 1>
As illustrated in FIG. 1, the lighting device 1 according to the first embodiment is a lighting device that is entirely attached to one surface side of a ceiling 400, and includes a mounting member 100, a device main body 200, and a cover 300. .

＜２． 取付部材１００の構成＞
取付部材１００は、本体部１１０と、突出部１２０ａ，１２０ｂと、延出片１３０ａ，１３０ｂとを有する。取付部材１００の材料としては、鉄、アルミニウム、セラミックス等の熱伝導性および剛性に優れた材料が好適する。
本体部１１０は、円環状であって、天井４００の配線孔４１０に対応したサイズの開口１１３が形成されている。当該開口１１３には、天井裏から配線孔４１０を介して導出された電源線４１１が挿通されている。 <2. Configuration of Mounting Member 100>
The attachment member 100 includes a main body 110, protrusions 120a and 120b, and extending pieces 130a and 130b. As a material of the mounting member 100, a material having excellent thermal conductivity and rigidity such as iron, aluminum, ceramics, and the like is suitable.
The main body 110 has an annular shape, and an opening 113 having a size corresponding to the wiring hole 410 of the ceiling 400 is formed. A power line 411 led out from the back of the ceiling through the wiring hole 410 is inserted into the opening 113.

本体部１１０には、取付孔１１１ａ，１１１ｂが形成されており、当該取付孔１１１ａ，１１１ｂに螺子１１２ａ，１１２ｂを挿入し天井４００に螺子込むことにより、取付部材１００が天井４００に設置されている。
突出部１２０ａ，１２０ｂは、本体部１１０の天井４００と接していない側の面の一部が、天井４００とは反対側（以下、この方向を表側といい、表側の反対側を裏側という。）に向かって突出して形成されている。 Mounting holes 111 a and 111 b are formed in the main body 110, and the mounting members 100 are installed in the ceiling 400 by inserting the screws 112 a and 112 b into the mounting holes 111 a and 111 b and screwing them into the ceiling 400. .
In the protrusions 120a and 120b, a part of the surface of the main body 110 that is not in contact with the ceiling 400 is a side opposite to the ceiling 400 (hereinafter, this direction is referred to as a front side, and the opposite side of the front side is referred to as a back side). It protrudes toward the surface.

突出部１２０ａ，１２０ｂには、螺子２３８ａ，２３８ｂを螺合するための雌螺子部１２１ａ，１２１ｂが形成されている。装置本体２００の窪み部２３０に形成された挿通孔２３４ａ，２３４ｂに螺子２３８ａ，２３８ｂを挿通する。そして、雌螺子部１２１ａ，１２１ｂで螺合することにより、取付部材１００に装置本体２００が固定される。
延出片１３０ａ，１３０ｂは、円弧板状であって、本体部１１０の外周縁における、開口１１３を挟んで対向する２箇所から、表側に向けて延設して形成されている。当該延出片１３０ａ，１３０ｂは、雌螺子部１２１ａ，１２１ｂと挿通孔２３４ａ，２３４ｂとの位置合わせを容易にするために設けられている。 Female screw portions 121a and 121b for screwing screws 238a and 238b are formed on the protruding portions 120a and 120b. The screws 238a and 238b are inserted through the insertion holes 234a and 234b formed in the recess 230 of the apparatus main body 200. And the apparatus main body 200 is fixed to the attachment member 100 by screwing together by the female screw parts 121a and 121b.
The extension pieces 130a and 130b are circular plate shapes, and are formed to extend toward the front side from two locations facing each other across the opening 113 on the outer peripheral edge of the main body 110. The extension pieces 130a and 130b are provided to facilitate alignment between the female screw portions 121a and 121b and the insertion holes 234a and 234b.

図２に示すように、筐体２２０の側壁２２３の内側における、対向する２箇所には、溝部２６０ａ，２６０ｂが形成されている。溝部２６０ａの側面は、筐体２２０の側壁２２３の内側に形成されたガイド壁２６１ａ，２６１ｂにより構成されている。また、溝部２６０ｂの側面は、筐体２２０の側壁２２３の内側に形成されたガイド壁２６１ｃ，２６１ｄにより構成されている。   As shown in FIG. 2, groove portions 260 a and 260 b are formed at two opposing locations inside the side wall 223 of the housing 220. The side surface of the groove portion 260 a is configured by guide walls 261 a and 261 b formed inside the side wall 223 of the housing 220. Further, the side surface of the groove portion 260 b is configured by guide walls 261 c and 261 d formed inside the side wall 223 of the housing 220.

延出片１３０ａの幅と、ガイド壁２６１ａとガイド壁２６１ｂとの間隔とは、略等しく、延出片１３０ｂの幅と、ガイド壁２６１ｃとガイド壁２６１ｄとの間隔とは、略等しい。装置本体２００を取付部材１００に締結する際、溝部２６０ａに延出片１３０ａを嵌合し、溝部２６１ｂに延出片１３０ｂを嵌合する。このとき、筐体２２０の筒軸方向において、雌螺子部１２１と挿通孔２３４との位置が一致する。   The width of the extended piece 130a and the distance between the guide wall 261a and the guide wall 261b are substantially equal, and the width of the extended piece 130b and the distance between the guide wall 261c and the guide wall 261d are substantially equal. When the apparatus main body 200 is fastened to the mounting member 100, the extended piece 130a is fitted into the groove 260a, and the extended piece 130b is fitted into the groove 261b. At this time, the positions of the female screw portion 121 and the insertion hole 234 coincide with each other in the cylinder axis direction of the housing 220.

このように、下方から目視確認しなくとも、溝部２６０ａに延出片１３０ａを嵌合し、溝部２６１ｂに延出片１３０ｂを嵌合するだけで、雌螺子部１２１と挿通孔２３４との位置合わせを行なうことができる。このため、照明装置１の施工時における作業性が向上する。
＜３． 装置本体２００の構成＞
図３に示すように、装置本体２００は、光源ユニット２１０と、筐体２２０と、電源回路２４０と、回路ケース２５０とを有する。 Thus, even if it does not visually confirm from the downward direction, just by fitting the extension piece 130a to the groove portion 260a and fitting the extension piece 130b to the groove portion 261b, the female screw portion 121 and the insertion hole 234 are aligned. Can be performed. For this reason, the workability | operativity at the time of construction of the illuminating device 1 improves.
<3. Configuration of apparatus main body 200>
As illustrated in FIG. 3, the apparatus main body 200 includes a light source unit 210, a housing 220, a power supply circuit 240, and a circuit case 250.

＜３．１ 光源ユニット２１０＞
光源ユニット２１０は、発光モジュール２１１と、放熱シート２１４と、押え部材２１５と、保護カバー２１７とを有する。
発光モジュール２１１は、表面実装型（ＳＭＤ：Surface Mount Device）ＬＥＤであって、略矩形状の基板２１２と、当該基板２１２上に配設された発光部２１３とを有する。 <3.1 Light source unit 210>
The light source unit 210 includes a light emitting module 211, a heat radiation sheet 214, a pressing member 215, and a protective cover 217.
The light emitting module 211 is a surface mount device (SMD) LED, and includes a substantially rectangular substrate 212 and a light emitting portion 213 disposed on the substrate 212.

放熱シート２１４は、シリコーン樹脂や、アルミニウム、スズ等の金属箔からなり、発光部２１３が発した熱を筐体２２０へ逃がす。
押え部材２１５は、略有底円筒状であって、その中央部には発光モジュール２１１の発光部２１３に対応したサイズの開口２１６が形成されている。当該押え部材２１５は、窪み部２３０の底壁部分２３１に螺子止めされる。この際、発光モジュール２１１の基板２１２が、押え部材２１５により、窪み部２３０の側壁部分２３１に向かって押圧され、筐体２２０に固定される。 The heat radiating sheet 214 is made of a metal foil such as silicone resin, aluminum, or tin, and releases heat generated by the light emitting unit 213 to the housing 220.
The pressing member 215 has a substantially bottomed cylindrical shape, and an opening 216 having a size corresponding to the light emitting portion 213 of the light emitting module 211 is formed at the center thereof. The pressing member 215 is screwed to the bottom wall portion 231 of the recess 230. At this time, the substrate 212 of the light emitting module 211 is pressed toward the side wall portion 231 of the recessed portion 230 by the pressing member 215 and fixed to the housing 220.

保護カバー２１７は、アクリル、ポリカーボネート等の透光材料からなり、発光モジュール２１１に異物が侵入するのを防止する。
＜３．２ 筐体２２０＞
筐体２２０は、主部２２１と、窪み部２３０とを有する。筐体２２０の材料としては、アルミニウムやマグネシウム等の金属材料、セラミックス、樹脂等の熱伝導性に優れた材料が好適する。 The protective cover 217 is made of a light-transmitting material such as acrylic or polycarbonate, and prevents foreign matter from entering the light emitting module 211.
<3.2 Housing 220>
The housing 220 has a main part 221 and a hollow part 230. As a material of the housing 220, a metal material such as aluminum or magnesium, or a material having excellent thermal conductivity such as ceramic or resin is suitable.

主部２２１は、円環状の底壁部分２２２と、当該底壁部分２２２の外周縁に裏側に向けて延設された円筒状の側壁部分２２３とを有する。底壁部分２２２の中央部には、開口部２２１ａが形成されている。また、底壁部分２２２には、その一部を裏側に向かって没入させることによって、カバー３００を収容するカバー収容部２２５が形成されている。
カバー収容部２２５は、円環状の底壁部分２２６と、当該底壁部分２２６の外周縁に表側に向けて延設された円筒状の側壁部分２２７とを有する。側壁部分２２７の内径は、カバー３００の外径より若干大きく設計されており、カバー３００を収容することができる。底壁部分２２６の外周縁における、中心を挟んで対向する２箇所には、カバー３００の係止部３１０を受ける係止受け溝２２８が形成されている。係止受け溝２２８は、幅広部２２８ａと、当該幅広部２２８ａよりも幅の狭い幅狭部２２８ｂとを有する。 The main portion 221 includes an annular bottom wall portion 222 and a cylindrical side wall portion 223 extending toward the back side on the outer peripheral edge of the bottom wall portion 222. An opening 221 a is formed at the center of the bottom wall portion 222. Further, the bottom wall portion 222 is formed with a cover accommodating portion 225 for accommodating the cover 300 by immersing a part thereof toward the back side.
The cover accommodating portion 225 includes an annular bottom wall portion 226 and a cylindrical side wall portion 227 extending toward the front side on the outer peripheral edge of the bottom wall portion 226. The inner diameter of the side wall portion 227 is designed to be slightly larger than the outer diameter of the cover 300 and can accommodate the cover 300. Locking receiving grooves 228 for receiving the locking portions 310 of the cover 300 are formed at two locations on the outer peripheral edge of the bottom wall portion 226 that face each other across the center. The locking receiving groove 228 has a wide portion 228a and a narrow portion 228b that is narrower than the wide portion 228a.

窪み部２３０は、開口部２２１ａの周縁に連続し、裏側に向けて没入している。当該窪み部２３０は、円板状の底壁部分２３１と、円板状の底壁部分２３１の外周縁に延設されたテーパー状の側壁部分２３２とを有する。底壁部分２３１には、その中央部を表側に向けて突出させることによって、発光モジュール２１１を載置するための載置面２３３が形成されている。また、底壁部分２３１の外周縁部には、螺子２３８ａ，２３８ｂ（図１を参照。）を挿通するための挿通孔２３４ａ，２３４ｂが形成されている。側壁部分２３２は、表側に向かって径が漸増しており、発光部２１３の出射光を反射する反射板としての機能を果たす。これにより、カバー３００における発光面積を広げることができる。   The depression 230 is continuous with the periphery of the opening 221a and is immersed toward the back side. The recess 230 includes a disc-shaped bottom wall portion 231 and a tapered side wall portion 232 extending on the outer peripheral edge of the disc-shaped bottom wall portion 231. A mounting surface 233 for mounting the light emitting module 211 is formed on the bottom wall portion 231 by projecting the central portion thereof toward the front side. In addition, insertion holes 234a and 234b for inserting screws 238a and 238b (see FIG. 1) are formed in the outer peripheral edge portion of the bottom wall portion 231. The side wall portion 232 has a diameter that gradually increases toward the front side, and functions as a reflector that reflects the light emitted from the light emitting portion 213. Thereby, the light emission area in the cover 300 can be expanded.

＜３．３ 電源回路２４０＞
電源回路２４０は、外部電源から供給される交流を整流平滑し、発光部２１３に電力を供給する。当該電源回路２４０は、回路基板２４１と、当該回路基板２４１に実装された回路部品２４２と、回路基板２４１に接続された配線２４３と、端子台２４４とを有する。端子台２４４の接続孔２４５に、天井裏から配線孔４１０を通じて出された電源線４１１（図１を参照。）を差し込むことにより、外部電源と電気的に接続される。 <3.3 Power supply circuit 240>
The power supply circuit 240 rectifies and smoothes alternating current supplied from an external power supply and supplies power to the light emitting unit 213. The power supply circuit 240 includes a circuit board 241, circuit components 242 mounted on the circuit board 241, wiring 243 connected to the circuit board 241, and a terminal block 244. By inserting a power supply line 411 (see FIG. 1) extending from the back of the ceiling through the wiring hole 410 into the connection hole 245 of the terminal block 244, it is electrically connected to an external power supply.

＜３．４ 電源回路カバー２５０＞
電源回路カバー２５０は、熱伝導性の高い絶縁材料からなり、電源回路２４０を収容する。当該回路ケース２５０は、螺子止めにより、筐体２２０の主部２２１と窪み部２３０の側壁２３２とで囲まれた領域で、筐体２２０に固定されている（図２を参照。）。
＜４． カバー３００の構成＞
図２に戻って、カバー３００は円板状の本体部３１０と、当該本体部３１０の外周縁に延設された係止部３２０とを有する。カバー３００の材料としては、例えば、アクリル、ポリカーボネート、ガラス等の透光材料が好適する。 <3.4 Power supply circuit cover 250>
The power circuit cover 250 is made of an insulating material having high thermal conductivity and accommodates the power circuit 240. The circuit case 250 is fixed to the casing 220 by screwing in an area surrounded by the main part 221 of the casing 220 and the side wall 232 of the recess 230 (see FIG. 2).
<4. Configuration of Cover 300>
Returning to FIG. 2, the cover 300 includes a disk-shaped main body portion 310 and a locking portion 320 extending on the outer peripheral edge of the main body portion 310. As a material for the cover 300, for example, a light-transmitting material such as acrylic, polycarbonate, or glass is suitable.

カバー３００の係止部３２０を、幅広部２２８ａに挿入し回動させると、係止部３１０が、幅狭部２２８ｂの外周部に係止される。これにより、カバー３００が筐体２２０に固定される。
カバー３００で筐体２２０を覆うことにより、螺子２３８ａ，２３８ｂや、挿通孔２３４ａ，２３４ｂ等を隠すことができる。 When the locking part 320 of the cover 300 is inserted into the wide part 228a and rotated, the locking part 310 is locked to the outer peripheral part of the narrow part 228b. Thereby, the cover 300 is fixed to the housing 220.
By covering the housing 220 with the cover 300, the screws 238a and 238b, the insertion holes 234a and 234b, and the like can be hidden.

＜５． 天井４００に取り付けた状態での照明装置１＞
天井４００に取り付けた状態での照明装置１について、図４を用いて説明する。
図４に示すように、発光部２１３は、窪み部２３０の底壁部分２３１に配置され、電源回路２４０は、主部２２１と窪み部２３０の側壁２３２とで囲まれた領域に配置されている。すなわち、発光部２１３と、電源回路２４０とは、天井４００の一面に沿った方向に並んで配置されている。 <5. Lighting device 1 attached to ceiling 400>
The lighting device 1 attached to the ceiling 400 will be described with reference to FIG.
As shown in FIG. 4, the light emitting unit 213 is disposed on the bottom wall portion 231 of the recess 230, and the power circuit 240 is disposed in a region surrounded by the main portion 221 and the sidewall 232 of the recess 230. . That is, the light emitting unit 213 and the power supply circuit 240 are arranged side by side in a direction along one surface of the ceiling 400.

そして、挿通孔２３４ａ，２３４ｂは、窪み部２３０の底壁部分２３１の外周縁部に、形成されている。すなわち、挿通孔２３４ａ，２３４ｂは、天井４００の一面に沿った方向に並んで配置された発光部２１３と電源回路２４０との間に位置している。この挿通孔２３４ａ，２３４ｂの位置で、筐体２２０と取付部材１００とが、螺子２３８ａ，２３８ｂにより締結されている。   The insertion holes 234 a and 234 b are formed in the outer peripheral edge portion of the bottom wall portion 231 of the recess portion 230. That is, the insertion holes 234 a and 234 b are located between the light emitting unit 213 and the power supply circuit 240 arranged side by side in the direction along one surface of the ceiling 400. The housing 220 and the attachment member 100 are fastened by screws 238a and 238b at the positions of the insertion holes 234a and 234b.

ここで、底壁部分２３１の裏側の面２３１ａと、突出部１２０ａ，１２０ｂの頂上部分１２２ａ，１２２ｂとは、互いに平面形状である。螺子２３８ａ，２３８ｂで締結した際、面２３１ａと、頂上部分１２２ａ，１２２ｂとが圧接される。従って、面２３１ａと、頂上部分１２２ａ，１２２ｂとは隙間なく面接触している。
挿通孔２３４ａ，２３４ｂは、発光部２１３が配置されている窪み部２３０内に形成されているため、発光部２１３の近くに螺子２３８ａ，２３８ｂが配置される。このため、発光部２１３から天井４００への放熱経路が短く、発光部２１３で生じた熱を効率よく天井４００に逃がすことができる。 Here, the back surface 231a of the bottom wall portion 231 and the top portions 122a and 122b of the projecting portions 120a and 120b have a planar shape. When fastened with the screws 238a and 238b, the surface 231a and the top portions 122a and 122b are pressed against each other. Therefore, the surface 231a and the top portions 122a and 122b are in surface contact with no gap.
Since the insertion holes 234a and 234b are formed in the recess 230 in which the light emitting unit 213 is disposed, the screws 238a and 238b are disposed near the light emitting unit 213. For this reason, the heat radiation path from the light emitting unit 213 to the ceiling 400 is short, and the heat generated in the light emitting unit 213 can be efficiently released to the ceiling 400.

図４において、符号Ｗ１は、天井４００から発光部２１３の照射面までの高さを示す。また、符号Ｗ２は、天井４００から螺子２３８ａ，２３８ｂの頭部までの高さを示す。ここで、高さＷ２は高さＷ１より小さく、螺子２３８ａ，２３８ｂの頭部は、発光部２１３の照射面より低い位置にある。このため、窪み部２３０内に配置された螺子２３８ａ，２３８ｂが、同じ窪み２３０内に配置された発光部２１３の出射光を遮らない。   In FIG. 4, the symbol W <b> 1 indicates the height from the ceiling 400 to the irradiation surface of the light emitting unit 213. Reference sign W2 indicates the height from the ceiling 400 to the heads of the screws 238a and 238b. Here, the height W <b> 2 is smaller than the height W <b> 1, and the heads of the screws 238 a and 238 b are at a position lower than the irradiation surface of the light emitting unit 213. For this reason, the screws 238 a and 238 b arranged in the depression 230 do not block the emitted light from the light emitting part 213 arranged in the same depression 230.

＜６． 点灯時における発光部２１３の熱＞
点灯時における発光部２１３の熱の流れについて、図５および図６を用いて説明する。
図５に示すように、点灯時に発光部２１３から発生した熱は、放熱シート２１４を通じて、窪み部２３０の底壁２３１に伝達し（熱の流れＦT1）、底壁２３１内に広がる（熱の流れＦT2）。底壁２３１に広がった熱は、螺子２３８ｂを通じて（熱の流れＦT3）、取付部材１００の突出部１２０ａ，１２０ｂに伝達する（熱の流れＦT4）。突出部１２０ａ，１２０ｂに伝達した熱は、取付部材１００の本体部１１０から天井４００の板内に拡散される（熱の流れＦT5）。天井４００の体積は、照明装置１に比べて大きく、熱容量も大きいため、点灯時に発光部２１３から発した熱を、天井４００へと拡散し放熱することができる。 <6. Heat of the light emitting unit 213 during lighting>
A heat flow of the light emitting unit 213 during lighting will be described with reference to FIGS. 5 and 6.
As shown in FIG. 5, the heat generated from the light emitting unit 213 during lighting is transmitted to the bottom wall 231 of the recess 230 through the heat dissipation sheet 214 (heat flow F T1 ) and spreads in the bottom wall 231 (heat Flow FT2 ). The heat spread on the bottom wall 231 is transmitted to the protrusions 120a and 120b of the mounting member 100 (heat flow F T4 ) through the screw 238b (heat flow F T3 ). The heat transmitted to the protrusions 120a and 120b is diffused from the main body 110 of the mounting member 100 into the plate of the ceiling 400 (heat flow F T5 ). Since the volume of the ceiling 400 is larger than that of the lighting device 1 and has a large heat capacity, heat generated from the light emitting unit 213 during lighting can be diffused to the ceiling 400 and radiated.

螺子２３８ａ、２３８ｂを、挿通孔２３４ａ，２３４ｂに挿通し、雌螺子部１２１ａ，１２１ｂで螺合することにより、窪み部２３０の底壁２３１と、取付部材１００の突出部１２０とは密着し、熱的に接続されている。発光部２１３から天井４００への放熱経路に電源回路２４０が配置されていないため、発光部２１３で生じた熱が電源回路２４０へ伝達しにくい。従って、電源回路２４０を構成する回路部品について、耐熱グレードが高い部品を必ずしも使用する必要がなく、製造コストの低減を図ることができる。   By inserting the screws 238a and 238b into the insertion holes 234a and 234b and screwing with the female screw portions 121a and 121b, the bottom wall 231 of the recess portion 230 and the protruding portion 120 of the mounting member 100 are brought into close contact with each other. Connected. Since the power supply circuit 240 is not disposed in the heat dissipation path from the light emitting unit 213 to the ceiling 400, the heat generated in the light emitting unit 213 is difficult to transfer to the power supply circuit 240. Therefore, it is not always necessary to use a component having a high heat resistance grade for the circuit components constituting the power supply circuit 240, and the manufacturing cost can be reduced.

また、発光部２１３と電源回路２４０とを天井４００の一面に沿った方向に配置し、かつ、発光部２１３付近で、筐体２２０と取付部材１００とが熱的に接続されているため、発光部２１３から天井４００への放熱経路が短い。このため、発光部２１３で生じた熱を効率よく天井４００に逃がすことができる。
なお、発光部２１３と電源回路２４０との間に、挿通孔２３４ａ，２３４ｂが形成されているため、発光部２１３と電源回路２４０との間に空間２３９が形成されている。発光部２１３と電源回路２４０とが隣接せず、その間に空間２３９存在するため、発光部２１３から、電源回路２４０への熱の伝達が遮断されている。また、螺子２３８ａ，２３８ｂに伝達した熱は、突出部１２０ａ，１２０ｂに伝達する（熱の流れＦT4）以外に、この空間２３９にも放熱される（熱の流れＦT6）。 In addition, the light emitting unit 213 and the power supply circuit 240 are arranged in a direction along one surface of the ceiling 400, and the housing 220 and the mounting member 100 are thermally connected in the vicinity of the light emitting unit 213. The heat radiation path from the part 213 to the ceiling 400 is short. For this reason, the heat generated in the light emitting unit 213 can be efficiently released to the ceiling 400.
Since insertion holes 234 a and 234 b are formed between the light emitting unit 213 and the power supply circuit 240, a space 239 is formed between the light emitting unit 213 and the power supply circuit 240. Since the light emitting unit 213 and the power supply circuit 240 are not adjacent to each other and there is a space 239 therebetween, heat transfer from the light emitting unit 213 to the power supply circuit 240 is blocked. The heat transmitted to the screws 238a and 238b is also radiated to the space 239 (heat flow F T6 ) in addition to the heat transmitted to the protrusions 120a and 120b (heat flow F T4 ).

さらに、図６を用いて、発光部と、電源回路と、筐体と取付部材との締結位置との違いによる熱の流れについて考察する。
図６（ａ）に示すように、比較例１は、電源回路１２４０の外側の領域で筐体１２２０と取付部材１１００とを締結した照明装置の例である。この場合、筐体１２２０と取付部材１１００とが、電源回路１２４０の外側の領域で、螺子１２３８ａ，１２３８ｂを介して熱的に接続されている。電源回路１２４０は、発光部１２１３から天井４００への放熱経路上に配置されている。このため、発光部１２１３で生じた熱が天井４００に逃げる際、その熱が電源回路１２４０に伝わり、電源回路１２４０の温度が高くなってしまう。 Furthermore, the flow of heat due to the difference between the light emitting portion, the power supply circuit, and the fastening position of the housing and the mounting member will be considered with reference to FIG.
As illustrated in FIG. 6A, Comparative Example 1 is an example of a lighting device in which a housing 1220 and an attachment member 1100 are fastened in a region outside the power supply circuit 1240. In this case, the housing 1220 and the attachment member 1100 are thermally connected to each other in the region outside the power supply circuit 1240 via screws 1238a and 1238b. The power supply circuit 1240 is disposed on a heat dissipation path from the light emitting unit 1213 to the ceiling 400. For this reason, when the heat generated in the light emitting unit 1213 escapes to the ceiling 400, the heat is transmitted to the power supply circuit 1240, and the temperature of the power supply circuit 1240 becomes high.

また、筐体１２２０と取付部材１１００とが熱的に接続された位置が発光部１２１３から遠く、発光部１２１３から天井４００への放熱経路が長いため、発光部１２１３で生じた熱を効率よく天井４００に逃がすことができない。
図６（ｂ）に示すように、比較例２は、発光部２２１３と電源回路２２４０とを天井４００に直交する方向に配置した照明装置の例である。この場合、発光部２２１３から生じた熱が裏側に配置された電源回路２２４０に伝わってしまい、電源回路２２４０の温度が高くなってしまう。 Further, the position where the housing 1220 and the mounting member 1100 are thermally connected is far from the light emitting unit 1213 and the heat radiation path from the light emitting unit 1213 to the ceiling 400 is long, so that the heat generated in the light emitting unit 1213 can be efficiently removed from the ceiling. 400 can not escape.
As illustrated in FIG. 6B, Comparative Example 2 is an example of a lighting device in which a light emitting unit 2213 and a power circuit 2240 are arranged in a direction orthogonal to the ceiling 400. In this case, heat generated from the light emitting unit 2213 is transmitted to the power supply circuit 2240 disposed on the back side, and the temperature of the power supply circuit 2240 becomes high.

また、筐体２２２０と取付部材２１００とが熱的に接続された位置が発光部２２１３から遠く、発光部２２１３から天井４００への放熱経路が長いため、発光部で生じた熱を効率よく天井に逃がすことができない。加えて、発光部２２１３と天井４００との間に電源回路２２４０を配置するための領域を設けるため、照明装置の厚みが大きくなってしまい、薄型化の観点から好ましくない。   Further, the position where the housing 2220 and the mounting member 2100 are thermally connected is far from the light emitting portion 2213 and the heat radiation path from the light emitting portion 2213 to the ceiling 400 is long, so that the heat generated in the light emitting portion can be efficiently transmitted to the ceiling. I can't escape. In addition, since a region for arranging the power supply circuit 2240 is provided between the light emitting unit 2213 and the ceiling 400, the thickness of the lighting device increases, which is not preferable from the viewpoint of thinning.

これに対して、本実施の形態にかかる照明装置１では、既に説明したとおり、比較例１と比較して、放熱性に優れており、比較例２と比較して、薄型、かつ、放熱性に優れている。
［実施の形態２］
本発明の実施の形態２にかかる照明装置５００について、図７を用いて説明する。なお、本実施の形態では、発光部と電源回路との配置関係、および筐体の形状が、実施の形態１と異なる点である。他の構成については、実施の形態１と同様であるので、実施の形態１と共通する部材には、同一の符号を付し、以下での説明を省略する。 On the other hand, in the illuminating device 1 concerning this Embodiment, as already demonstrated, compared with the comparative example 1, it is excellent in heat dissipation, compared with the comparative example 2, and it is thin and has heat dissipation. Is excellent.
[Embodiment 2]
A lighting apparatus 500 according to Embodiment 2 of the present invention will be described with reference to FIG. Note that the present embodiment is different from the first embodiment in the arrangement relationship between the light emitting units and the power supply circuit and the shape of the housing. Since other configurations are the same as those of the first embodiment, the same reference numerals are given to members common to the first embodiment, and the description thereof will be omitted.

図７に示すように、本実施の形態にかかる照明装置５００において、筐体５２０は、筒状の側壁部５２５と、当該側壁部５２５の内側に形成された窪み部５３０と、当該窪み部５３０の中央部に形成された突出部５３５とを有する。
窪み部５３０は、円環状の底壁部分５３１と、当該底壁部分５３１の外周縁に表側に向けて延設されたテーパー状の側壁部分５３２とを有する。底壁部分５３１の外周縁部には、環状に複数の光源ユニット５１０が配置されている。また、底壁部分５３１の内周縁部には螺子２３８ａ，２３８ｂを挿通するための挿通孔５３４ａ，５３４ｂが形成されている。側壁部分５３２は、表側に向かって径が漸増しており、光源ユニット５１０の発光部５１３の出射光を反射する反射板としての機能を果たす。これにより、カバー３００における発光面積を広げることができる。 As shown in FIG. 7, in the lighting apparatus 500 according to the present embodiment, the housing 520 includes a cylindrical side wall portion 525, a hollow portion 530 formed inside the side wall portion 525, and the hollow portion 530. And a protrusion 535 formed at the center of the.
The recess 530 includes an annular bottom wall portion 531 and a tapered side wall portion 532 that extends toward the front side on the outer peripheral edge of the bottom wall portion 531. A plurality of light source units 510 are annularly arranged on the outer peripheral edge of the bottom wall portion 531. In addition, insertion holes 534a and 534b for inserting screws 238a and 238b are formed in the inner peripheral edge of the bottom wall portion 531. The side wall portion 532 has a diameter that gradually increases toward the front side, and functions as a reflector that reflects the light emitted from the light emitting unit 513 of the light source unit 510. Thereby, the light emission area in the cover 300 can be expanded.

突出部５３５は、円板状の天板部分５３６と、当該円板状の天板部分５３６の外周縁に裏側に向けて延設された側壁部分５３７とを有する。回路ケース５５０は、螺子止めにより、突出部５３５の天板部分５３６と側壁部分５３７とに囲まれた領域で、筐体５２０に固定されている。当該回路ケース５５０内に、発光部５１３に電力を供給する電源回路５４０が収容されている。   The protruding portion 535 includes a disk-shaped top plate portion 536 and a side wall portion 537 extending toward the back side on the outer peripheral edge of the disk-shaped top plate portion 536. The circuit case 550 is fixed to the housing 520 in a region surrounded by the top plate portion 536 and the side wall portion 537 of the protruding portion 535 by screwing. A power supply circuit 540 that supplies power to the light emitting unit 513 is accommodated in the circuit case 550.

このように、実施の形態２にかかる照明装置５００では、電源回路５４０を中央部に配置し、その周りに複数の光源ユニット５１０を環状に配置している。光源ユニット５１０を複数個配置しているため、光量を高めることができる。
また、電源回路５４０と発光部５１３とは、天井４００の一面に沿った方向に配置され、電源回路５４０と発光部５１３との間の領域で、筐体５２０と取付部材１００とが熱的に接続されている。このため、実施の形態１にかかる照明装置１と同様の放熱効果を得ることができる。 Thus, in the illuminating device 500 concerning Embodiment 2, the power supply circuit 540 is arrange | positioned in the center part, and the several light source unit 510 is arrange | positioned annularly around it. Since a plurality of light source units 510 are arranged, the amount of light can be increased.
In addition, the power supply circuit 540 and the light emitting unit 513 are arranged in a direction along one surface of the ceiling 400, and the housing 520 and the mounting member 100 are thermally formed in a region between the power supply circuit 540 and the light emitting unit 513. It is connected. For this reason, the heat dissipation effect similar to the illuminating device 1 concerning Embodiment 1 can be acquired.

［実施の形態３］
本発明の実施の形態３にかかる照明装置６００について、図８を用いて説明する。なお、本実施の形態では、筐体と取付部材との締結位置、取付部材の形状、および筐体の形状が実施の形態１と異なる点である。他の構成については、実施の形態１と同様であるので、実施の形態１と共通する部材には、同一の符号を付し、以下での説明を省略する。 [Embodiment 3]
An illumination apparatus 600 according to the third embodiment of the present invention will be described with reference to FIG. Note that the present embodiment is different from the first embodiment in the fastening position between the housing and the attachment member, the shape of the attachment member, and the shape of the housing. Since other configurations are the same as those of the first embodiment, the same reference numerals are given to members common to the first embodiment, and the description thereof will be omitted.

図８に示すように、本実施の形態にかかる照明装置６００において、筐体６２０は、主部２２１と、窪み部２３０と、主部２２１の外周部に設けられた副部６４０とを有する。
副部６４０は、円環状の底壁部分６４１と、当該底壁部分６４１の外周縁に裏側に向かって延設された円筒状の側壁部分６４２とを有する。底壁部分６４１には、螺子６３８ａ，６３８ｂを挿通するための挿通孔６３４ａ，６３４ｂが形成されている。 As shown in FIG. 8, in the illumination device 600 according to the present embodiment, the housing 620 includes a main part 221, a hollow part 230, and a sub part 640 provided on the outer peripheral part of the main part 221.
The sub-portion 640 includes an annular bottom wall portion 641 and a cylindrical side wall portion 642 that extends toward the back side on the outer peripheral edge of the bottom wall portion 641. The bottom wall portion 641 is formed with insertion holes 634a and 634b through which the screws 638a and 638b are inserted.

取付部材７００は、円環状の本体部７１０と、突出部７２０ａ，７２０ｂと、放熱部７３０とを有する。
突出部７２０ａ，７２０ｂは、本体部７１０の外周縁部の一部が、本体部７１０の天井４００と接していない側の面から表側に向かって突出して形成されている。当該突出部７２０ａ，７２０ｂには、螺子６３８ａ，６３８ｂを螺合するための雌螺子部７２１ａ，７２１ｂが形成されている。 The attachment member 700 includes an annular main body 710, protrusions 720 a and 720 b, and a heat dissipation part 730.
The protrusions 720a and 720b are formed such that a part of the outer peripheral edge of the main body 710 protrudes from the surface of the main body 710 that is not in contact with the ceiling 400 toward the front side. Female screw portions 721a and 721b for screwing the screws 638a and 638b are formed on the projecting portions 720a and 720b.

放熱部７３０は、円錐台状であり、本体部７１０の中央部の一部が、本体部７１０の天井４００と接していない側の面から表側に向かって突出して形成されている。
照明装置６００は、挿通孔６３４ａ，６３４ｂに、螺子６３８ａ，６３８ｂを挿通し、雌螺子部７２１ａ，７２１ｂで螺合することにより、天井４００に取り付けられる。この際、放熱部材７３０の面７３１は、窪み部２３０の底壁部分２３１の裏側の面２３１ａにより押圧される。これにより、放熱部材７３０の面７３１と、底壁部分２３１の裏側の面２３１ａとが密着し、熱的に接続される。 The heat radiation part 730 has a truncated cone shape, and a part of the central part of the main body part 710 is formed to protrude from the surface of the main body part 710 that is not in contact with the ceiling 400 toward the front side.
The lighting device 600 is attached to the ceiling 400 by inserting the screws 638a and 638b into the insertion holes 634a and 634b and screwing them with the female screw portions 721a and 721b. At this time, the surface 731 of the heat radiating member 730 is pressed by the surface 231 a on the back side of the bottom wall portion 231 of the recess 230. Thereby, the surface 731 of the heat radiating member 730 and the surface 231a on the back side of the bottom wall portion 231 are in close contact and thermally connected.

発光部２１３と電源回路２４０とは、天井４００の一面に沿った方向に配置されている。また、発光部２１３と電源回路２４０との間の領域で、筐体６２０と取付部材７００とが熱的に接続されている。従って、実施の形態１にかかる照明装置１と同様の放熱効果を得ることができる。
また、放熱部材７３０の面７３１と、底壁部分２３１の裏側の面２３１ａとの接触面からだけでなく、螺子６３８ａ，６３８ｂによる締結部分からも天井４００側に放熱される。これにより、より高い放熱効果を得ることができる。 The light emitting unit 213 and the power circuit 240 are arranged in a direction along one surface of the ceiling 400. In addition, the housing 620 and the attachment member 700 are thermally connected in a region between the light emitting unit 213 and the power supply circuit 240. Therefore, the heat dissipation effect similar to that of the lighting device 1 according to the first embodiment can be obtained.
Further, heat is radiated to the ceiling 400 side not only from the contact surface between the surface 731 of the heat radiating member 730 and the surface 231a on the back side of the bottom wall portion 231 but also from the fastening portion by the screws 638a and 638b. Thereby, a higher heat dissipation effect can be obtained.

なお、放熱部材７３０の面７３１と、底壁部分２３１の裏側の面２３１ａとの間にシリコングリス等を塗布してもよい。また、放熱部材７３０の面７３１と、底壁部分２３１の裏側の面２３１ａとの間に、シリコーンシート等を挿入してもよい。これにより、放熱効果を高めることができる。
［変形例］
なお、上記の実施の形態に基づいて説明してきたが、本発明は上記の実施の形態に限定されないことはもちろんである。以下のような場合も本発明に含まれる。 Silicon grease or the like may be applied between the surface 731 of the heat radiating member 730 and the surface 231a on the back side of the bottom wall portion 231. Further, a silicone sheet or the like may be inserted between the surface 731 of the heat radiating member 730 and the surface 231a on the back side of the bottom wall portion 231. Thereby, the heat dissipation effect can be enhanced.
[Modification]
In addition, although it demonstrated based on said embodiment, of course, this invention is not limited to said embodiment. The following cases are also included in the present invention.

（ａ）上記の実施の形態１では、発光部２１３と電源回路２４０との間の領域での、筐体２２０と取付部材１００との熱的な接続が、締結部材２３８を介して実現されている例を示したが、本発明は必ずしもこの場合に限定されない。筐体と取付部材との熱的な接続は、このような締結部材を介するものに限られない。実施の形態３のように、照明装置６００を天井４００に取り付けた際、発光部２１３と電源回路２４０との間の領域で、筐体６２０と取付部材７００とが押圧され密着することにより、熱的に接続されるものであってもよい。   (A) In the first embodiment, the thermal connection between the housing 220 and the mounting member 100 in the region between the light emitting unit 213 and the power supply circuit 240 is realized via the fastening member 238. However, the present invention is not necessarily limited to this case. The thermal connection between the housing and the mounting member is not limited to that via such a fastening member. As in Embodiment 3, when the lighting device 600 is attached to the ceiling 400, the housing 620 and the attachment member 700 are pressed and brought into close contact with each other in the region between the light emitting unit 213 and the power supply circuit 240. May be connected to each other.

（ｂ）上記の実施の形態において、取付部材１００に突出部１２０が２つ形成されている場合を示したが、本発明は必ずしもこの場合に限定されない。突出部１２０の数は任意であり、例えば、取付部材１００に突出部１００を３つ形成する構成としてもよい。また、筐体２２０と取付部材１００とを締結する螺子２３８の数、および螺子２３８を挿通するための挿通孔２３４の数も、突出部１２０の数に応じて任意である。   (B) In the above-described embodiment, the case where the two protrusions 120 are formed on the mounting member 100 is shown, but the present invention is not necessarily limited to this case. The number of the protrusions 120 is arbitrary, and, for example, three protrusions 100 may be formed on the attachment member 100. The number of screws 238 that fasten the housing 220 and the attachment member 100 and the number of insertion holes 234 through which the screws 238 are inserted are also arbitrary depending on the number of protrusions 120.

螺子２３８、突出部１２０、および挿通孔２３４の数を増やすことにより、発光部２１３で生じた熱の放熱経路が増え、より熱を天井４００に逃がすことができる。
（ｃ）上記の実施の形態において、螺子２３８を用いて、筐体２２０と取付部材１００とを締結する場合を説明したが、本発明は必ずしもこの場合に限定されない。螺子、ボルト、ナット、リベット、ピン等の締結部材を用いて、筐体２２０と取付部材１００とを締結するものであればよい。 By increasing the number of screws 238, protrusions 120, and insertion holes 234, the heat dissipation path of heat generated in the light emitting part 213 increases, and heat can be released to the ceiling 400 more.
(C) Although the case where the housing 220 and the attachment member 100 are fastened using the screw 238 has been described in the above embodiment, the present invention is not necessarily limited to this case. What is necessary is just to fasten the housing | casing 220 and the attachment member 100 using fastening members, such as a screw, a volt | bolt, a nut, a rivet, and a pin.

（ｄ）上記の実施の形態において、天井４００に照明装置１を取り付ける場合を説明したが、本発明は必ずしもこの場合に限定されない。天井や壁面等の造営材に取り付ける照明装置であればよい。
（ｅ）上記の実施の形態において、取付部材１００が円形状である場合を示したが、本発明は必ずしもこの場合に限定されない。取付部材１００は、例えば、四角形状、六角形状、八角形状等のような多角形の板状であってもよい。 (D) In the above embodiment, the case where the lighting device 1 is attached to the ceiling 400 has been described, but the present invention is not necessarily limited to this case. What is necessary is just an illuminating device attached to construction materials, such as a ceiling and a wall surface.
(E) In the above embodiment, the case where the attachment member 100 has a circular shape is shown, but the present invention is not necessarily limited to this case. The attachment member 100 may be a polygonal plate shape such as a quadrangular shape, a hexagonal shape, an octagonal shape, or the like.

（ｆ）上記の実施の形態において、筐体２２０を覆うカバー３００は透光性の材料から構成される場合を説明したが、本発明は必ずしもこの場合に限定されない。筐体２２０を覆うカバー３００は、光拡散機能を持つものであってもよい。発光部２１３から出射された光は、カバー３００を透過する際に散乱光となる。このような光拡散機能により、輝度むらが軽減される。   (F) In the above embodiment, the case where the cover 300 that covers the housing 220 is made of a light-transmitting material has been described. However, the present invention is not necessarily limited to this case. The cover 300 that covers the housing 220 may have a light diffusion function. The light emitted from the light emitting unit 213 becomes scattered light when passing through the cover 300. By such a light diffusion function, luminance unevenness is reduced.

なお、カバー３００は必須の要件ではなく、省略することも可能である。
（ｇ）上記の実施の形態において、半導体発光素子の一例としてＬＥＤ素子を採用したが、本発明は必ずしもこれに限定されない。例えば、無機ＥＬ素子や有機ＥＬ素子、ＬＤ（Ｌａｓｅｒ Ｄｉｏｄｅ）、発光トランジスタ（Ｌｉｇｈｔ Ｅｍｉｔｔｉｎｇ Ｔｒａｎｓｉｓｔｏｒ）などを採用することもできる。 Note that the cover 300 is not an essential requirement and can be omitted.
(G) In the above embodiment, the LED element is employed as an example of the semiconductor light emitting element, but the present invention is not necessarily limited thereto. For example, an inorganic EL element, an organic EL element, an LD (Laser Diode), a light emitting transistor (Light Emitting Transistor), or the like may be employed.

（ｈ）上記の実施の形態において、筐体２２０が円形状である場合を示したが、本発明は必ずしもこの場合に限定されない。筐体２２０は、例えば、四角形状、六角形状、八角形状等のような多角形の板状であってもよい。
（ｉ）上述の実施の形態および各変形例を、部分的に組み合せてもよい。 (H) In the above embodiment, the case 220 has a circular shape, but the present invention is not necessarily limited to this case. The casing 220 may be a polygonal plate shape such as a quadrangular shape, a hexagonal shape, an octagonal shape, or the like.
(I) The above-described embodiments and modifications may be partially combined.

１，５００，６００ 照明装置
１００，７００ 取付部材
１２０ａ，１２０ｂ，７２０ａ，７２０ｂ 突出部
１２１ａ，１２１ｂ，７２１ａ，７２１ｂ 雌螺子部
１３０ａ，１３０ｂ 延出片
２００ 装置本体
２１０ 光源ユニット
２１１ 発光モジュール
２１３，５１３ 発光部
２２０，５２０，６２０ 筐体
２２１ 主部
２３０ 窪み部
２３４ａ，２３４ｂ，５３４ａ，５３４ｂ，６３４ａ，６３４ｂ 挿通孔
２３８ａ，２３８ｂ，６３８ａ，６３８ｂ 螺子
２４０ 電源回路
２５０ 回路ケース
２６０ａ，２６０ｂ ガイド壁
２６１ａ，２６１ｂ 溝部
３００ カバー
４００ 天井（造営材） 1,500,600 Illuminating device 100,700 Mounting member 120a, 120b, 720a, 720b Projection part 121a, 121b, 721a, 721b Female screw part 130a, 130b Extension piece 200 Device body 210 Light source unit 211 Light emitting module 213, 513 Light emission Part 220, 520, 620 Case 221 Main part 230 Recessed part 234a, 234b, 534a, 534b, 634a, 634b Insertion hole 238a, 238b, 638a, 638b Screw 240 Power supply circuit 250 Circuit case 260a, 260b Guide wall 261a, 261b Groove part 300 Cover 400 Ceiling (construction material)

Claims (8)

発光部と、当該発光部に電力を供給する電源回路と、前記発光部と前記電源回路とを収容する筐体と、造営材の一面に設置される取付部材とを備える照明装置であって、
前記電源回路は、前記発光部に対して、前記造営材の一面に沿った方向に配置され、前記筐体と前記取付部材とは、前記発光部と前記電源回路との間の領域で熱的に接続されている
ことを特徴とする照明装置。 A lighting device comprising: a light emitting unit; a power supply circuit that supplies power to the light emitting unit; a housing that houses the light emitting unit and the power supply circuit; and an attachment member that is installed on one surface of the construction material,
The power supply circuit is disposed in a direction along one surface of the construction material with respect to the light emitting unit, and the housing and the attachment member are thermally formed in a region between the light emitting unit and the power supply circuit. It is connected to, The lighting device characterized by the above-mentioned. 前記筐体は、
有底筒状であり、底壁の一部に開口部が形成されている主部と、
前記開口部の周縁に連続し、前記造営材側に没入している窪み部とを有し、
前記窪み部の内に、前記発光部が配置され、
前記主部と前記窪み部の側壁とで囲まれた領域に、前記電源回路が配置されている
ことを特徴とする請求項１に記載の照明装置。 The housing is
A main portion having a bottomed cylindrical shape and having an opening formed in a part of the bottom wall;
Continuing to the periphery of the opening, and having a dent that is immersed in the construction material side,
The light emitting part is disposed in the hollow part,
The lighting device according to claim 1, wherein the power supply circuit is arranged in a region surrounded by the main portion and a sidewall of the hollow portion. 前記取付部材に前記筐体を締結する締結部材をさらに備え、
前記筐体と前記取付部材との熱的な接続は、前記締結部材を介して実現されている
ことを特徴とする請求項２に記載の照明装置。 A fastening member for fastening the housing to the mounting member;
The lighting device according to claim 2, wherein thermal connection between the housing and the mounting member is realized through the fastening member. 前記締結部材は、螺子であり、
前記窪み部には、前記螺子を挿通するための挿通孔が設けられている
ことを特徴とする請求項３に記載の照明装置。 The fastening member is a screw;
The lighting device according to claim 3, wherein an insertion hole for inserting the screw is provided in the recess. 前記螺子の頭部は、前記筐体と前記取付部材とが締結された状態において、前記発光部の照射面より低い位置にある
ことを特徴とする請求項４に記載の照明装置。 The lighting device according to claim 4, wherein a head portion of the screw is at a position lower than an irradiation surface of the light emitting unit in a state where the housing and the attachment member are fastened. 前記取付部材は板状であり、その一部が前記造営材とは反対側に突出した突出部を有し、
前記突出部には、前記螺子を螺合するための雌螺子部が設けられている
ことを特徴とする請求項４に記載の照明装置。 The mounting member is plate-shaped, and a part thereof has a protruding portion that protrudes on the side opposite to the construction material,
The lighting device according to claim 4, wherein the protruding portion is provided with a female screw portion for screwing the screw. 前記窪み部は、前記造営材とは反対側に向かって径が漸増している
ことを特徴とする請求項２に記載の照明装置。 The lighting device according to claim 2, wherein a diameter of the hollow portion is gradually increased toward a side opposite to the construction material. 前記取付部材の外周縁には、延出片が設けられており、
前記主部の側壁には、上記延出片に嵌合する溝部が設けられている
ことを特徴とする請求項３に記載の照明装置。 An extension piece is provided on the outer peripheral edge of the mounting member,
The lighting device according to claim 3, wherein a groove portion that fits into the extension piece is provided on a side wall of the main portion.
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