JP2018078115A - Lighting fixture - Google Patents

Lighting fixture Download PDF

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JP2018078115A
JP2018078115A JP2018000358A JP2018000358A JP2018078115A JP 2018078115 A JP2018078115 A JP 2018078115A JP 2018000358 A JP2018000358 A JP 2018000358A JP 2018000358 A JP2018000358 A JP 2018000358A JP 2018078115 A JP2018078115 A JP 2018078115A
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annular
reflector
substrate
main body
radiator
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JP6508556B2 (en
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繁樹 青木
Shigeki Aoki
繁樹 青木
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Hotalux Ltd
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NEC Lighting Ltd
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    • 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
    • F21V29/15—Thermal insulation
    • 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
    • F21S8/043—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures mounted by means of a rigid support, e.g. bracket or arm
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • 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]

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture having an excellent technological aspect by improving a pendant light using a conventional LED element.SOLUTION: A lighting fixture includes: a body 10 which has a suspension part at an upper side central part and in which a lower part is opened; a power supply device 20 arranged in the central part of an opening of the body 10; a reflection plate 30 arranged so as to cover the whole opening of the body 10; an annular radiator 40 arranged at a lower side peripheral part of the reflection plate 30; a base plate 50 arranged below the radiator 40; a plurality of LED elements 51 arranged on the lower side surface of the base plate 50; and an annular diffusion cover 60 arranged below the base plate 50 so as to cover the LED element 51. The reflection plate 30 includes: a central part 31 which protrudes downward; an insulation retaining part 32 in which a distance from a lower end of the body 10 located on the outer peripheral side of the central part 31 is constant; and a protrusion part 33 protruding to the body 10 side located on the outer peripheral side of the insulation retaining part 32. The body 10 and the protrusion part 33 of the reflection plate 30 are fixed by fixing means.SELECTED DRAWING: Figure 3

Description

本発明は、照明器具に関する。   The present invention relates to a lighting fixture.

近年、天井からコードで吊り下げられた照明器具（いわゆるペンダントライト）に、ＬＥＤ素子を適用することが検討されている（例えば、特許文献１参照）。   In recent years, it has been studied to apply an LED element to a lighting fixture (so-called pendant light) suspended from a ceiling by a cord (see, for example, Patent Document 1).

特開２０１２−５９４５５号公報JP 2012-59455 A

前述の照明器具には、ＬＥＤの持つ発熱の問題、及び、蛍光灯と同じように光らせる等のような更なる技術的改良が求められている。   The above-described lighting fixture is required to have further technical improvements such as the problem of heat generation of the LED and the same lighting as a fluorescent lamp.

そこで、本発明は、従来のＬＥＤ素子を用いたペンダントライトを改良し、技術的に優れた照明器具を提供することを目的とする。   Therefore, an object of the present invention is to improve a pendant light using a conventional LED element and to provide a technically superior lighting fixture.

前記目的を達成するために、本発明の第一の照明器具は、
上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記反射板が、
下側に凸状となった中央部と、
前記中央部の外周側に位置する前記本体の下端からの距離が一定とされた絶縁保持部と、
前記絶縁保持部の外周側に位置する前記本体側に突出した突出部とを含み、
前記本体と前記反射板の突出部とが固定手段で固定されている
ことを特徴とする。 In order to achieve the above object, the first lighting fixture of the present invention comprises:
A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The reflector is
A central portion that is convex downward,
An insulating holding portion having a constant distance from the lower end of the main body located on the outer peripheral side of the central portion;
Including a protruding portion protruding toward the main body located on the outer peripheral side of the insulating holding portion,
The main body and the protruding portion of the reflecting plate are fixed by a fixing means.

本発明の第二の照明器具は、
上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記反射板が、
下側に凸状となった中央部と、
前記中央部の外周側に位置する外周部とを含み、
前記拡散カバーが、
前記ＬＥＤ素子が発光した光を前記反射板側に出射する出射部を有し、
前記反射板の中央部が、
前記外周部側に位置する内側に凸の第１の曲面部と、
前記第１の曲面部より中心側に位置する外側に凸の第２の曲面部とを含み、
前記第１の曲面部と前記第２の曲面部との交点と、前記拡散カバーの出射部の下端とが略同じ高さであることを特徴とする。 The second lighting fixture of the present invention is:
A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The reflector is
A central portion that is convex downward,
Including an outer peripheral portion located on the outer peripheral side of the central portion,
The diffusion cover is
An emission part for emitting the light emitted from the LED element to the reflector side;
The central part of the reflector is
An inwardly convex first curved surface portion located on the outer peripheral portion side;
An outwardly convex second curved surface portion located closer to the center than the first curved surface portion,
The intersection of the first curved surface portion and the second curved surface portion and the lower end of the light emitting portion of the diffusion cover are substantially the same height.

本発明の第三の照明器具は、
上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記反射板が、外周側に前記本体側に突出した突出部を含み、
前記複数のＬＥＤ素子が、前記基板の下側の面に２列以上の環状列を形成するように配置されており、
外周側の環状列の前記ＬＥＤ素子が、前記反射板と前記放熱器とが接触する箇所に近い外周側の電極と導通するサーマルパッドを有する
ことを特徴とする。 The third lighting fixture of the present invention is:
A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The reflector includes a protruding portion protruding on the outer peripheral side toward the main body side,
The plurality of LED elements are arranged to form two or more annular rows on the lower surface of the substrate,
The LED elements in the annular array on the outer peripheral side have a thermal pad that is electrically connected to an electrode on the outer peripheral side close to a place where the reflector and the radiator are in contact with each other.

本発明の第四の照明器具は、
上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記放熱器が、複数に分割されていることを特徴とする。 The fourth lighting fixture of the present invention is:
A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The radiator is divided into a plurality of parts.

本発明の第一の照明器具によれば、反射板が絶縁保持部を有することで、電源装置とＬＥＤ素子が配置された基板との間に高い絶縁性を確保することができ、かつ、反射板が突出部を有することで、放熱器の上側の面の一部の上部に空洞が形成され、かつ、放熱面積も大きくすることができ、放熱効果が高まる。   According to the first lighting fixture of the present invention, since the reflection plate has the insulating holding portion, high insulation can be ensured between the power supply device and the substrate on which the LED elements are arranged, and the reflection Since the plate has the protruding portion, a cavity is formed in a part of the upper surface of the radiator, and the heat radiation area can be increased, so that the heat radiation effect is enhanced.

本発明の第二の照明器具によれば、反射板の第１の曲面部と第２の曲面部との交点を、拡散カバーの出射部の下端と略同じ高さとすることで、前記拡散カバーの出射部から出射した光の一部を前記反射板の第１の曲面部で前記反射板の中央部に反射させ、前記反射板中央部の発光状態をより均一にすることができる。   According to the second lighting fixture of the present invention, the intersection of the first curved surface portion and the second curved surface portion of the reflecting plate is set to be substantially the same height as the lower end of the emitting portion of the diffusion cover, so that the diffusion cover A part of the light emitted from the emitting part can be reflected by the first curved surface part of the reflecting plate to the central part of the reflecting plate, and the light emission state of the reflecting plate central part can be made more uniform.

本発明の第三の照明器具によれば、基板の上側の面において、外周側の環状列の前記ＬＥＤ素子の上部に対応する位置に、前記放熱器と接するようにサーマルパッドが配置されていることで、放熱効果を高めるとともに、基板構成を簡略化することができる。   According to the third lighting fixture of the present invention, on the upper surface of the substrate, the thermal pad is disposed at a position corresponding to the upper part of the LED element in the annular row on the outer peripheral side so as to be in contact with the radiator. Thus, the heat dissipation effect can be enhanced and the substrate configuration can be simplified.

本発明の第四の照明器具によれば、放熱器を複数に分割することで、放熱器の形成材料の廃棄量を削減することが可能である。   According to the 4th lighting fixture of this invention, it is possible to reduce the discard amount of the formation material of a heat radiator by dividing | segmenting a heat radiator into plurality.

図１は、本発明の照明器具の構成の一例を示す分解斜視図である。FIG. 1 is an exploded perspective view showing an example of the configuration of the lighting fixture of the present invention. 図２は、本発明の照明器具の構成の一例を示す側面透視図である。FIG. 2 is a side perspective view showing an example of the configuration of the lighting fixture of the present invention. 図３は、本発明の第一の照明器具を示す側面透視図である。FIG. 3 is a side perspective view showing the first lighting fixture of the present invention. 図４（ａ）は、本発明の第二の照明器具を示す側面透視図であり、図４（ｂ）は、本発明の第二の照明器具における光の動きを説明する側面透視図である。FIG. 4 (a) is a side perspective view showing the second lighting fixture of the present invention, and FIG. 4 (b) is a side perspective view for explaining the movement of light in the second lighting fixture of the present invention. .

以下、本発明の照明器具について、図面を参照して詳細に説明する。ただし、本発明は、以下の説明に限定されない。なお、以下の図１から図４において、同一部分には、同一符号を付し、その説明を省略する場合がある。また、図面においては、説明の便宜上、各部の構造は適宜簡略化して示す場合があり、各部の寸法比等は、実際とは異なり、模式的に示す場合がある。   Hereinafter, the lighting fixture of this invention is demonstrated in detail with reference to drawings. However, the present invention is not limited to the following description. In addition, in the following FIGS. 1-4, the same code | symbol is attached | subjected to the same part and the description may be abbreviate | omitted. In the drawings, for convenience of explanation, the structure of each part may be simplified as appropriate, and the dimensional ratio of each part may be schematically shown, unlike the actual case.

［実施形態１］
図１は、本発明の照明器具の構成の一例を示す分解斜視図である。図２は、本発明の照明器具を示す側面透視図である。図１及び図２に示すように、本例の照明器具１００は、本体１０と、電源装置２０と、反射板３０と、環状の放熱器（ヒートシンク）４０と、環状の基板５０と、複数のＬＥＤ素子５１と、環状の拡散カバー６０とを含む。 [Embodiment 1]
FIG. 1 is an exploded perspective view showing an example of the configuration of the lighting fixture of the present invention. FIG. 2 is a side perspective view showing the lighting apparatus of the present invention. As shown in FIGS. 1 and 2, the lighting fixture 100 of the present example includes a main body 10, a power supply device 20, a reflector 30, an annular radiator (heat sink) 40, an annular substrate 50, and a plurality of The LED element 51 and an annular diffusion cover 60 are included.

本体１０は、上側中心部に吊り下げ部１１を有し、かつ、下部が開口している。吊り下げ部１１は、内部に電気コードを有する。図１では、本体１０を円筒状としているが、四角柱状等の他の形状であってもよく、吊り下げ部１１についても同様である。また、反射板３０、放熱器４０、基板５０及び拡散カバー６０も、円板状及び円環状に限られず、矩形の板及び四角環状等の他の形状としてもよい。本体１０としては、公知のペンダントライトの本体を用いればよい。   The main body 10 has a hanging part 11 in the upper center part, and the lower part is open. The hanging part 11 has an electric cord inside. In FIG. 1, the main body 10 has a cylindrical shape, but may have other shapes such as a quadrangular prism shape, and the same applies to the hanging portion 11. Further, the reflecting plate 30, the radiator 40, the substrate 50, and the diffusion cover 60 are not limited to a disk shape and an annular shape, and may have other shapes such as a rectangular plate and a square annular shape. As the main body 10, a known pendant light main body may be used.

電源装置２０は、本体１０の開口内部に配置される。電源装置２０としては、公知のペンダントライトの電源装置を用いればよい。   The power supply device 20 is disposed inside the opening of the main body 10. As the power supply device 20, a known pendant light power supply device may be used.

反射板３０は、本体１０の開口全体を覆うように配置される。反射板３０の詳細については、後述する。   The reflector 30 is disposed so as to cover the entire opening of the main body 10. Details of the reflector 30 will be described later.

環状の放熱器４０は、反射板３０の下側周辺部に配置される。放熱器４０の形成材料としては、例えば、アルミニウム及びその合金、マグネシウム及びその合金、銅及びその合金等の金属を使用できる。また、放熱器４０の形成材料は、例えば、高熱伝導性フィラーを含有させた樹脂でもよい。前記樹脂としては、例えば、ポリカーボネート、ナイロン、ＰＢＴ（ポリブチレンテレフタレート）、ＰＰＳ（ポリフェニレンサルファイド）等があげられる。放熱器４０の形状は、一枚の環状の板であってもよいが、図１に示すように、複数（図１では４枚）に分割された板の結合により環状の板とされていることが好ましい。この理由については、実施形態４で説明する。   The annular radiator 40 is disposed on the lower peripheral portion of the reflector 30. As a material for forming the radiator 40, for example, metals such as aluminum and its alloys, magnesium and its alloys, copper and its alloys can be used. Further, the material for forming the radiator 40 may be, for example, a resin containing a high thermal conductive filler. Examples of the resin include polycarbonate, nylon, PBT (polybutylene terephthalate), PPS (polyphenylene sulfide), and the like. The shape of the radiator 40 may be a single annular plate, but as shown in FIG. 1, it is formed into an annular plate by combining a plurality of (four in FIG. 1) divided plates. It is preferable. This reason will be described in the fourth embodiment.

環状の基板５０は、放熱器４０の下側の面に配置される。基板５０は、一枚の環状の板であってもよいし、図１に示すように、複数（図１では８枚）に分割された板の結合により環状の板とされていてもよい。基板５０としては、公知のＬＥＤ用基板を用いればよい。   The annular substrate 50 is disposed on the lower surface of the radiator 40. The substrate 50 may be a single annular plate, or may be formed into an annular plate by combining a plurality of (eight in FIG. 1) plates as shown in FIG. A known LED substrate may be used as the substrate 50.

複数のＬＥＤ素子５１は、基板５０の下側の面に配置されている。ＬＥＤ素子５１は、特に限定されず、従来公知のものを使用できるが、白色ＬＥＤであることが好ましい。ＬＥＤ素子５１は、例えば、シリコーン樹脂等に内包され、前記シリコーン樹脂中に蛍光体が分散されていてもよい。このような形態において、例えば、ＬＥＤ素子５１を、青色ＬＥＤとし、前記蛍光体を、黄色蛍光体又は赤・緑蛍光体の組み合わせとすることで、白色光を得ることができる。また、ＬＥＤ素子５１を、近紫外ＬＥＤ（ＵＶ−ＬＥＤ）とし、前記蛍光体を赤・緑・青蛍光体の組み合わせ（ＲＧＢ蛍光体）とすることでも、白色光を得ることができる。基板５０の構成は、下側の面に複数のＬＥＤ素子５１が配置されているものであれば特に限定されないが、図１に示すように、下側の面にＬＥＤ素子５１が２列の環状列を形成するように配置されていることが好ましい。図１においては、内側の環状列に３２個のＬＥＤ素子５１が配置され、外側の環状列に６４個のＬＥＤ素子５１が配置されている。ただし、図１は例示に過ぎず、ＬＥＤ素子５１の数は図１に示す例に限定されない。   The plurality of LED elements 51 are arranged on the lower surface of the substrate 50. The LED element 51 is not particularly limited, and a conventionally known LED element can be used, but a white LED is preferable. For example, the LED element 51 may be included in a silicone resin or the like, and a phosphor may be dispersed in the silicone resin. In such a form, for example, white light can be obtained by using the LED element 51 as a blue LED and the phosphor as a combination of a yellow phosphor or a red / green phosphor. Moreover, white light can be obtained also by making the LED element 51 into a near-ultraviolet LED (UV-LED) and using the phosphor as a combination of red, green and blue phosphors (RGB phosphor). The configuration of the substrate 50 is not particularly limited as long as a plurality of LED elements 51 are arranged on the lower surface, but as shown in FIG. 1, the LED elements 51 are arranged in two rows on the lower surface. Preferably they are arranged to form a row. In FIG. 1, 32 LED elements 51 are arranged in the inner annular row, and 64 LED elements 51 are arranged in the outer annular row. However, FIG. 1 is merely an example, and the number of LED elements 51 is not limited to the example shown in FIG.

環状の拡散カバー６０は、ＬＥＤ素子５１を覆うように、基板５０下部に配置されている。拡散カバー６０の形成材料としては、アクリル樹脂等の透光性を有し、乳白色を呈する拡散性を備えた材料等があげられる。   The annular diffusion cover 60 is disposed below the substrate 50 so as to cover the LED element 51. Examples of a material for forming the diffusion cover 60 include a material having translucency such as acrylic resin, and a diffusive material exhibiting milky white.

反射板３０、放熱器４０、基板５０及び拡散カバー６０を一体化する方法は、特に限定されず、隣接する各部材を固定してもよいし、反射板３０と拡散カバー６０とを固定し、その間に放熱器４０及び基板５０を介在させてもよい。固定手段も、特に限定されず、例えば、ネジ等を用いて固定すればよい。   The method of integrating the reflector 30, the radiator 40, the substrate 50, and the diffusion cover 60 is not particularly limited, and adjacent members may be fixed, or the reflector 30 and the diffusion cover 60 may be fixed. You may interpose the heat radiator 40 and the board | substrate 50 in the meantime. The fixing means is not particularly limited, and may be fixed using screws or the like, for example.

つぎに、図３を参照して、本実施形態の照明器具１００（第一の照明器具）の反射板３０の詳細について説明する。本実施形態において、反射板３０は、下側に凸状となった中央部３１と、中央部３１の外周側に位置する本体１０の下端からの距離が一定とされた絶縁保持部３２と、絶縁保持部３２の外周側に位置する本体１０側に突出した突出部３３とを含む。   Next, with reference to FIG. 3, the detail of the reflecting plate 30 of the lighting fixture 100 (1st lighting fixture) of this embodiment is demonstrated. In the present embodiment, the reflector 30 includes a central portion 31 that is convex downward, and an insulating holding portion 32 that has a constant distance from the lower end of the main body 10 located on the outer peripheral side of the central portion 31. And a projecting portion 33 projecting toward the main body 10 located on the outer peripheral side of the insulating holding portion 32.

反射板３０は、突出部３３において本体１０と固定手段で固定される。前記固定手段は、特に限定されず、例えば、ネジ等で固定すればよい。   The reflector 30 is fixed to the main body 10 by the fixing means at the protrusion 33. The fixing means is not particularly limited, and may be fixed with screws or the like, for example.

反射板３０の形成材料は、特に限定されず、例えば、一般的な鋼板材料等を用いればよい。反射板３０は、例えば、プレス加工、打ち抜き加工等の公知の方法により製造することができる。   The formation material of the reflecting plate 30 is not particularly limited, and for example, a general steel plate material or the like may be used. The reflecting plate 30 can be manufactured by a known method such as press working or punching, for example.

図３に示すように、本実施形態の照明器具１００によれば、反射板３０が絶縁保持部３２を有することで、電源装置２０とＬＥＤ素子５１が配置された基板５０との間に高い絶縁性を確保することができる。また、図３に示すように、本実施形態の照明器具１００によれば、反射板３０が突出部３３を有することで、放熱器４０の上側の面の一部の上部に空洞が形成され、かつ、放熱面積を大きくすることができ、放熱効果が高まる。   As shown in FIG. 3, according to the lighting fixture 100 of the present embodiment, since the reflector 30 has the insulating holding portion 32, high insulation is provided between the power supply device 20 and the substrate 50 on which the LED elements 51 are arranged. Sex can be secured. Moreover, as shown in FIG. 3, according to the lighting fixture 100 of the present embodiment, the reflector 30 has the protrusion 33, so that a cavity is formed in a part of the upper surface of the radiator 40, And a heat dissipation area can be enlarged and the heat dissipation effect increases.

［実施形態２］
図４（ａ）に、本実施形態の照明器具（第二の照明器具）を示す。本実施形態の照明器具１００において、反射板３０及び拡散カバー６０以外は、実施形態１の照明器具と同様である。本実施形態の照明器具１００では、反射板３０が、下側に凸状となった中央部３１と、中央部３１の外周側に位置する外周部とを含む。図４（ａ）においては、前記外周部を、実施形態１の照明器具と同じ絶縁保持部３２及び突出部３３としているが、本実施形態において、前記外周部の形状は、本体１０の開口全体を覆うことが可能であれば特に限定されず、図４（ａ）に示す以外の形状であってもよい。また、本実施形態の照明器具１００では、拡散カバー６０が、ＬＥＤ素子５１が発光した光を反射板３０側に出射する出射部６１を有する。 [Embodiment 2]
FIG. 4A shows a lighting fixture (second lighting fixture) of the present embodiment. The lighting fixture 100 of the present embodiment is the same as the lighting fixture of the first embodiment except for the reflector 30 and the diffusion cover 60. In the lighting fixture 100 of this embodiment, the reflecting plate 30 includes a central portion 31 that is convex downward, and an outer peripheral portion that is located on the outer peripheral side of the central portion 31. In FIG. 4A, the outer peripheral portion is the same as the insulating holding portion 32 and the protruding portion 33 as in the lighting fixture of the first embodiment, but in this embodiment, the shape of the outer peripheral portion is the entire opening of the main body 10. If it can cover, it will not specifically limit, The shape other than shown to Fig.4 (a) may be sufficient. Moreover, in the lighting fixture 100 of this embodiment, the diffusion cover 60 has the emission part 61 which radiate | emits the light which the LED element 51 light-emitted to the reflecting plate 30 side.

反射板３０の中央部３１は、前記外周部側に位置する内側に凸（下方向から見て逆Ｒ）の第１の曲面部３１ｂと、第１の曲面部３１ｂより中心側に位置する外側に凸（下方向から見て正Ｒ）の第２の曲面部３１ａとを含む。図４（ａ）に補助線で示すように、第１の曲面部３１ａと第２の曲面部３１ｂとの交点Ｘと、拡散カバー６０の出射部６１の下端とは、略同じ高さである。   The central portion 31 of the reflecting plate 30 includes a first curved surface portion 31b that protrudes inward (reverse R when viewed from below) located on the outer peripheral portion side, and an outer surface that is located closer to the center than the first curved surface portion 31b. And a second curved surface portion 31a that is convex (positive R when viewed from below). As shown by an auxiliary line in FIG. 4A, the intersection X of the first curved surface portion 31a and the second curved surface portion 31b and the lower end of the emitting portion 61 of the diffusion cover 60 are substantially the same height. .

つぎに、図４（ｂ）を参照して、本実施形態の照明器具１００における光の動きについて説明する。本実施形態の照明器具１００によれば、破線の矢印で示すＬＥＤ素子５１が発光した光のうち拡散カバー６０の出射部６１から出射した光の一部を、実線の矢印で示すように、反射板３０の第１の曲面部３１ｂで反射板３０の中央部に反射させ、反射板３０中央部の発光状態をより均一にすることができる。   Next, with reference to FIG.4 (b), the motion of the light in the lighting fixture 100 of this embodiment is demonstrated. According to the lighting apparatus 100 of the present embodiment, a part of the light emitted from the emission part 61 of the diffusion cover 60 among the light emitted by the LED element 51 indicated by the broken arrow is reflected as indicated by the solid arrow. The first curved surface portion 31b of the plate 30 is reflected by the central portion of the reflecting plate 30, and the light emission state at the central portion of the reflecting plate 30 can be made more uniform.

［実施形態３］
図１及び図３を参照して、本実施形態の照明器具（第三の照明器具）について説明する。本実施形態の照明器具１００は、基板５０の構成が異なる点、及び、外周側に本体１０側に突出した突出部３３を含み、本体１０の開口全体を覆うことが可能なものであれば反射板３０の形状が図３に示す例に限定されない点を除き、実施形態１の照明器具と同様である。本実施形態の照明器具１００においては、複数のＬＥＤ素子５１が、基板５０の下側の面に２列の環状列を形成するように配置されている。また、本実施形態の照明器具１００では、外周側の環状列のＬＥＤ素子５１が、反射板３０と放熱器４０とが接触する箇所に近い外周側の電極（カソード又はアノード）と導通するサーマルパッドを有する（図示せず）。このとき、前記外周側の電極をカソード又はアノードのいずれにするかは、ＬＥＤ素子５１の種類によって選択する。すなわち、ＬＥＤ素子５１が、カソードとサーマルパッドとを導通することで、温度を低下させることができるものであれば、前記外周側の電極をカソードとする。一方、ＬＥＤ素子５１が、アノードとサーマルパッドとを導通することで、温度を低下させることができるものであれば、前記外周側の電極をアノードとする。図１に例示するように、一般的にＬＥＤ素子５１の数が多くなる外周側の環状列のＬＥＤ素子５１がサーマルパッドを有することで、放熱効果を高めることが可能である。また、本実施形態の照明器具１００によれば、基板５０の構成を簡略化することも可能である。 [Embodiment 3]
With reference to FIG.1 and FIG.3, the lighting fixture (3rd lighting fixture) of this embodiment is demonstrated. The lighting fixture 100 of the present embodiment is different in that the configuration of the substrate 50 is different, and the outer peripheral side includes a protruding portion 33 protruding toward the main body 10 and can cover the entire opening of the main body 10. Except for the point that the shape of the plate 30 is not limited to the example shown in FIG. 3, it is the same as the lighting apparatus of the first embodiment. In the lighting fixture 100 of the present embodiment, the plurality of LED elements 51 are arranged so as to form two annular rows on the lower surface of the substrate 50. Moreover, in the lighting fixture 100 of this embodiment, the thermal pad which the LED element 51 of the cyclic | annular row | line | column of an outer peripheral side conduct | electrically_connects with the electrode (cathode or anode) of the outer peripheral side near the location where the reflecting plate 30 and the heat radiator 40 contact. (Not shown). At this time, whether the outer peripheral electrode is a cathode or an anode is selected according to the type of the LED element 51. In other words, if the LED element 51 can reduce the temperature by conducting the cathode and the thermal pad, the outer peripheral electrode is used as the cathode. On the other hand, if the LED element 51 can reduce the temperature by conducting the anode and the thermal pad, the electrode on the outer peripheral side is used as the anode. As illustrated in FIG. 1, the LED elements 51 in the annular array on the outer peripheral side, in which the number of LED elements 51 generally increases, have a thermal pad, so that the heat dissipation effect can be enhanced. Moreover, according to the lighting fixture 100 of this embodiment, the structure of the board | substrate 50 can also be simplified.

本実施形態の照明器具１００において、さらに、内周側の環状列のＬＥＤ素子５１が、サーマルパッドを有してもよい。放熱効果の向上を考慮した場合には、内周側の環状列のＬＥＤ素子５１において、サーマルパッドは、反射板３０と放熱器４０とが接触する箇所に近い中心側の電極と導通させることが好ましい。一方、基板５０の構成の簡略化を考慮した場合には、内周側の環状列のＬＥＤ素子５１において、サーマルパッドは、外周側の環状列のＬＥＤ素子５１と同様に、外周側の電極と導通させることが好ましい。   In the lighting fixture 100 of the present embodiment, the LED elements 51 in the annular row on the inner peripheral side may further have a thermal pad. In consideration of the improvement of the heat dissipation effect, in the LED element 51 in the annular array on the inner peripheral side, the thermal pad may be connected to the electrode on the center side near the location where the reflector 30 and the radiator 40 are in contact. preferable. On the other hand, when considering the simplification of the configuration of the substrate 50, in the LED element 51 in the inner annular ring, the thermal pad is connected to the electrode on the outer peripheral side in the same manner as the LED element 51 in the outer annular ring. It is preferable to conduct.

［実施形態４］
図１を参照して、本実施形態の照明器具（第四の照明器具）について説明する。本実施形態の照明器具１００は、複数（図１では４枚）に分割された板が接続されることで環状の放熱器４０が形成されている点を除き、実施形態１の照明器具と同様である。放熱器４０を複数に分割することで、放熱器４０を１枚の環状の板として製造するときと比べ、放熱器４０の形成材料の廃棄量を削減することが可能である。 [Embodiment 4]
With reference to FIG. 1, the lighting fixture (4th lighting fixture) of this embodiment is demonstrated. The lighting fixture 100 of the present embodiment is the same as the lighting fixture of the first embodiment, except that an annular radiator 40 is formed by connecting a plurality of (four in FIG. 1) divided plates. It is. By dividing the radiator 40 into a plurality, it is possible to reduce the amount of waste of the material forming the radiator 40 as compared with the case where the radiator 40 is manufactured as a single annular plate.

以上、４つの実施形態に分けて本発明の照明器具について説明したが、本発明の照明器具は、任意の２つ以上の実施形態の特徴を兼ね備えたものであってもよい。   The lighting fixture of the present invention has been described above by dividing it into four embodiments. However, the lighting fixture of the present invention may have the characteristics of any two or more embodiments.

以上、実施形態を参照して本発明を説明したが、本発明は前記実施形態に限定されるものではない。本発明の構成や詳細には、本発明のスコープ内で当業者が理解し得る様々な変更をすることができる。   The present invention has been described above with reference to the embodiment, but the present invention is not limited to the embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

この出願は、２０１３年４月２６日に出願された日本出願特願２０１３−０９４１２２を基礎とする優先権を主張し、その開示の全てをここに取り込む。   This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2013-094122 for which it applied on April 26, 2013, and takes in those the indications of all here.

本発明によれば、技術的に優れた照明器具を提供することができる。本発明の照明器具は、屋内照明等の幅広い用途に用いることが可能である。   ADVANTAGE OF THE INVENTION According to this invention, the technically excellent lighting fixture can be provided. The lighting fixture of the present invention can be used for a wide range of applications such as indoor lighting.

１０ 本体
１１ 吊り下げ部
２０ 電源装置
３０ 反射板
３１ 中央部
３１ａ 第２の曲面部
３１ｂ 第１の曲面部
３２ 絶縁保持部
３３ 突出部
４０ 放熱器
５０ 基板
５１ ＬＥＤ素子
６０ 拡散カバー
６１ 出射部
Ｘ 交点

DESCRIPTION OF SYMBOLS 10 Main body 11 Suspension part 20 Power supply device 30 Reflector 31 Central part 31a 2nd curved surface part 31b 1st curved surface part 32 Insulation holding | maintenance part 33 Protrusion part 40 Radiator 50 Substrate 51 LED element 60 Diffusion cover 61 Output part X Intersection

前記目的を達成するために、本発明の照明器具は、
上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口全体を覆うように配置された反射板と、
基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーを含む照明器具において、
前記反射板が、
下側に凸状となった中央部と、
前記中央部の外周側に位置する絶縁保持部と、
前記絶縁保持部の外周側に位置する前記本体側に同一周面上に突出した突出部を有し、
前記拡散カバーが、
前記ＬＥＤ素子が発光した光を前記反射板側に出射する出射部を有し、
前記本体と前記反射板の突出部とが固定手段で固定されていることを特徴とする。
また、本発明の第一の照明器具は、
上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記反射板が、
下側に凸状となった中央部と、
前記中央部の外周側に位置する前記本体の下端からの距離が一定とされた絶縁保持部と、
前記絶縁保持部の外周側に位置する前記本体側に突出した突出部とを含み、
前記本体と前記反射板の突出部とが固定手段で固定されている
ことを特徴とする。 In order to achieve the above object, the lighting apparatus of the present invention comprises:
A main body having a hanging part in the upper center part and having a lower part opened;
A reflector arranged to cover the entire opening of the body;
A plurality of LED elements arranged on the lower surface of the substrate;
In a lighting fixture including an annular diffusion cover disposed under the substrate so as to cover the LED element,
The reflector is
A central portion that is convex downward,
An insulating holding part located on the outer peripheral side of the central part;
Having a protruding portion protruding on the same peripheral surface on the main body side located on the outer peripheral side of the insulating holding portion;
The diffusion cover is
An emission part for emitting the light emitted from the LED element to the reflector side;
The main body and the protruding portion of the reflecting plate are fixed by a fixing means.
Moreover, the 1st lighting fixture of this invention is
A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The reflector is
A central portion that is convex downward,
An insulating holding portion having a constant distance from the lower end of the main body located on the outer peripheral side of the central portion;
Including a protruding portion protruding toward the main body located on the outer peripheral side of the insulating holding portion,
The main body and the protruding portion of the reflecting plate are fixed by a fixing means.

Claims (4)

上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記反射板が、
下側に凸状となった中央部と、
前記中央部の外周側に位置する前記本体の下端からの距離が一定とされた絶縁保持部と、
前記絶縁保持部の外周側に位置する前記本体側に突出した突出部とを含み、
前記本体と前記反射板の突出部とが固定手段で固定されている
ことを特徴とする照明器具。 A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The reflector is
A central portion that is convex downward,
An insulating holding portion having a constant distance from the lower end of the main body located on the outer peripheral side of the central portion;
Including a protruding portion protruding toward the main body located on the outer peripheral side of the insulating holding portion,
The lighting apparatus, wherein the main body and the protruding portion of the reflecting plate are fixed by a fixing means. 上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記反射板が、
下側に凸状となった中央部と、
前記中央部の外周側に位置する外周部とを含み、
前記拡散カバーが、
前記ＬＥＤ素子が発光した光を前記反射板側に出射する出射部を有し、
前記反射板の中央部が、
前記外周部側に位置する内側に凸の第１の曲面部と、
前記第１の曲面部より中心側に位置する外側に凸の第２の曲面部とを含み、
前記第１の曲面部と前記第２の曲面部との交点と、前記拡散カバーの出射部の下端とが略同じ高さである
ことを特徴とする照明器具。 A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The reflector is
A central portion that is convex downward,
Including an outer peripheral portion located on the outer peripheral side of the central portion,
The diffusion cover is
An emission part for emitting the light emitted from the LED element to the reflector side;
The central part of the reflector is
An inwardly convex first curved surface portion located on the outer peripheral portion side;
An outwardly convex second curved surface portion located closer to the center than the first curved surface portion,
An illuminating device, wherein an intersection of the first curved surface portion and the second curved surface portion and a lower end of an emission portion of the diffusion cover are substantially the same height. 上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記反射板が、外周側に前記本体側に突出した突出部を含み、
前記複数のＬＥＤ素子が、前記基板の下側の面に２列以上の環状列を形成するように配置されており、
外周側の環状列の前記ＬＥＤ素子が、前記反射板と前記放熱器とが接触する箇所に近い外周側の電極と導通するサーマルパッドを有する
ことを特徴とする照明器具。 A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The reflector includes a protruding portion protruding on the outer peripheral side toward the main body side,
The plurality of LED elements are arranged to form two or more annular rows on the lower surface of the substrate,
The lighting device, wherein the LED elements in the annular array on the outer peripheral side have a thermal pad that is electrically connected to an electrode on the outer peripheral side near a position where the reflector and the radiator are in contact with each other. 上側中心部に吊り下げ部を有し、かつ、下部が開口した本体と、
前記本体の開口の中央内部に配置された電源装置と、
前記本体の開口全体を覆うように配置された反射板と、
前記反射板の下側周辺部に配置された環状の放熱器と、
前記放熱器の下部に配置された環状の基板と、
前記基板の下側の面に配置された複数のＬＥＤ素子と、
前記ＬＥＤ素子を覆うように前記基板下部に配置された環状の拡散カバーとを含み、
前記放熱器が、複数に分割されている
ことを特徴とする照明器具。

A main body having a hanging part in the upper center part and having a lower part opened;
A power supply device disposed inside the center of the opening of the main body;
A reflector arranged to cover the entire opening of the body;
An annular radiator disposed in the lower peripheral portion of the reflector;
An annular substrate disposed under the radiator;
A plurality of LED elements disposed on the lower surface of the substrate;
An annular diffusion cover disposed under the substrate so as to cover the LED element,
The said heat radiator is divided | segmented into plurality, The lighting fixture characterized by the above-mentioned.

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