JP5506856B2 - Lighting device - Google Patents

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JP5506856B2
JP5506856B2 JP2012110692A JP2012110692A JP5506856B2 JP 5506856 B2 JP5506856 B2 JP 5506856B2 JP 2012110692 A JP2012110692 A JP 2012110692A JP 2012110692 A JP2012110692 A JP 2012110692A JP 5506856 B2 JP5506856 B2 JP 5506856B2
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led
substrate
light source
light sources
light
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JP2012151133A (en
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清公 田中
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本発明は、指向性のある光源を用いた照明装置において、照明する全面に渡って均一照明を行う照明装置に関する。   The present invention relates to an illuminating device that uses a directional light source to perform uniform illumination over the entire surface to be illuminated.

近年、従来の白熱電球や放電灯に加えて、発光ダイオード（以下、ＬＥＤという）を光源とした照明装置が用いられ始めている。
照明装置は、室内及び室外の様々な場所に設置されており、設置される場所や照明装置の用途によっては十分な輝度が必要であり、ＬＥＤのような点光源を光源として採用した場合には、輝度を確保するために複数のＬＥＤが必要となる。また、ＬＥＤを光源として採用した照明装置には、複数のＬＥＤを実装した基板を１つのユニットとして、複数ユニットを組み合わせることにより照明装置を構成するものがある。 In recent years, in addition to conventional incandescent bulbs and discharge lamps, lighting devices using light emitting diodes (hereinafter referred to as LEDs) as light sources have begun to be used.
The lighting device is installed in various places indoors and outdoors, and sufficient brightness is required depending on the installation location and the use of the lighting device. When a point light source such as an LED is used as the light source In order to ensure luminance, a plurality of LEDs are required. In addition, some lighting devices that employ LEDs as light sources constitute a lighting device by combining a plurality of units with a substrate on which a plurality of LEDs are mounted as one unit.

下記特許文献１には、複数のＬＥＤが実装されたカード型ＬＥＤ照明光源４３（本願発明の基板に相当する）を１つのユニットとして、複数のユニットを備えたＬＥＤ照明装置４１が開示されている。カード型ＬＥＤ照明光源４３は、複数のＬＥＤベアチップ４２が実装及び樹脂モールドされた基板と、ＬＥＤベアチップ４２に対応した位置に反射面を有する孔（開口部）を有し基板に貼り合わされる光学反射板とからなり、カード型ＬＥＤ照明光源４３に電気的に接続可能なコネクタを有するヒートシンクのスロットに挿入される（図８（ａ）参照）。   Patent Document 1 listed below discloses an LED illumination device 41 having a plurality of units, with a card-type LED illumination light source 43 (corresponding to the substrate of the present invention) mounted with a plurality of LEDs as one unit. . The card-type LED illumination light source 43 includes a substrate on which a plurality of LED bare chips 42 are mounted and resin-molded, and a hole (opening) having a reflecting surface at a position corresponding to the LED bare chip 42, and optical reflection that is bonded to the substrate. The board is inserted into a slot of a heat sink having a connector that can be electrically connected to the card-type LED illumination light source 43 (see FIG. 8A).

特開２００３−１２４５２８号公報JP 2003-124528 A

しかし、特許文献１に開示されている従来のＬＥＤ照明装置４１は、以下のような問題があった。
図８（ｂ）に示すように、ＬＥＤ照明装置４１の一面に、複数のカード型ＬＥＤ照明光源４３がＬＥＤベアチップ４２間の距離より大きい距離を持って設けられているため、カード型ＬＥＤ照明光源間の発光がない部分４４が他の発光のある部分に対して暗さが目立ってしまい、均一な面発光ができていなかった。特に、光源としてＬＥＤが用いられている場合には、ＬＥＤは指向性が強いため、光源のグレア（眩しさ）を使用者に感じさせることになり、光源のある部分とない部分に対応して明るさが不均一になり、均一な面発光ができていなかった。 However, the conventional LED lighting device 41 disclosed in Patent Document 1 has the following problems.
As shown in FIG. 8B, a plurality of card type LED illumination light sources 43 are provided on one surface of the LED illumination device 41 with a distance larger than the distance between the LED bare chips 42. The portion 44 having no light emission between them was darker than the other light emitting portions, and uniform surface light emission was not achieved. In particular, when an LED is used as the light source, the LED has a strong directivity, so that the user feels the glare of the light source, corresponding to the part with and without the light source. The brightness was uneven and uniform surface light emission was not achieved.

また、特許文献１に実施形態として開示されているような、カード型ＬＥＤ光源にコネクタ等の電子部品を設けた場合には、光源（ＬＥＤ）がない部分がより目立ち、均一な面発光ができないという問題があった。
本願発明は、上記問題に鑑みてなされた発明であり、ＬＥＤといった指向性のある光源を用いた照明装置において、光源の指向性によるグレアを緩和して均一な面発光をするとともに、指向性のある複数の光源を装着した基板の小型化が可能である照明装置を提供することを目的とする。 In addition, when an electronic component such as a connector is provided on a card-type LED light source as disclosed in Patent Document 1, a portion without a light source (LED) is more conspicuous and uniform surface light emission cannot be performed. There was a problem.
The present invention has been made in view of the above problems, and in an illuminating device using a directional light source such as an LED, the glare caused by the directivity of the light source is reduced, and uniform surface light emission is achieved. It is an object of the present invention to provide an illumination device capable of downsizing a substrate on which a plurality of light sources are mounted.

本発明に係る照明装置は、指向性のある複数の光源を装着した基板を一面に備える照明装置において、前記複数の光源は、隣り合う光源間の距離が等しくなるように前記基板に配置され、前記基板を前記一面に係止するための係止孔が、前記複数の光源の内で最外周にある光源の内側に位置する光源の間に配置されて前記基板に設けられており、前記基板は４つの角を有し、前記係止孔は、前記基板に配置された複数の光源の内、最外周部の光源とその１つ内側の光源との間に前記基板の４つの角に対応して４つ設けられていることを特徴とする。
本発明に係る照明装置は、指向性のある複数の光源を装着した基板を一面に備える照明装置において、前記複数の光源は、光が均一に発光されるように前記基板に配置され、前記基板を前記一面に係止するための係止孔が、前記複数の光源の内で最外周にある光源の内側に位置する光源の間に配置されて前記基板に設けられており、前記基板は４つの角を有し、前記係止孔は、前記基板に配置された複数の光源の内、最外周部の光源とその１つ内側の光源との間に前記基板の４つの角に対応して４つ設けられていることを特徴とする。
本発明に係る照明装置は、前記基板を前記一面に複数並べて備えており、前記複数の基板は、ある一方の基板に設けられた光源から、隣り合う他方の基板に設けられた光源までの距離が、前記一方の基板に設けられた光源間の距離と等しくなるように配置されていることを特徴とする。
本発明に係る照明装置は、前記基板を前記一面に複数並べて備えており、前記複数の基板は、前記一面において光が均一に発光されるように配置されていることを特徴とする。
本構成によれば、複数の光源を装着した基板を係止するための係止孔を基板の最外周にある光源の内側に位置する光源の間に設けるので、係止孔を基板の端部に設ける必要がなく、基板の小型化が可能になる。
また、本構成によれば、基板の４つの角部に対応した４つの係止孔の位置で係止するので、光源からの熱で反ろうとする基板を安定的に固定することができる。
また、本構成によれば、光源の指向性によるグレアを緩和して均一な面発光することが可能である。
さらに、本構成によれば、複数の基板からなる面にて均一に面発光が可能となる。 The illuminating device according to the present invention is an illuminating device including a substrate on which a plurality of directional light sources are mounted on one surface, wherein the plurality of light sources are arranged on the substrate such that distances between adjacent light sources are equal, A locking hole for locking the substrate to the one surface is disposed between the light sources located inside the light source located on the outermost periphery among the plurality of light sources, and is provided in the substrate. Has four corners, and the locking holes correspond to the four corners of the substrate between the light source at the outermost periphery and the light source inside one of the plurality of light sources arranged on the substrate. And four are provided .
The illuminating device according to the present invention is an illuminating device including a substrate on which a plurality of directional light sources are mounted. The plurality of light sources are arranged on the substrate so that light is uniformly emitted, and the substrate Is provided between the light sources located inside the light source located on the outermost periphery of the plurality of light sources, and provided on the substrate. The locking hole corresponds to the four corners of the substrate between the light source at the outermost periphery and the light source inside one of the plurality of light sources arranged on the substrate. Four are provided .
The lighting device according to the present invention includes a plurality of the substrates arranged side by side on the one surface, and the plurality of substrates is a distance from a light source provided on one substrate to a light source provided on the other adjacent substrate. Are arranged so as to be equal to the distance between the light sources provided on the one substrate.
The lighting device according to the present invention includes a plurality of the substrates arranged side by side on the one surface, and the plurality of substrates are arranged so that light is uniformly emitted on the one surface.
According to this configuration, since the locking hole for locking the substrate on which the plurality of light sources are mounted is provided between the light sources located inside the light source on the outermost periphery of the substrate, the locking hole is provided at the end of the substrate. The substrate can be downsized.
Moreover, according to this structure, since it latches in the position of the four latching holes corresponding to the four corners of a board | substrate, the board | substrate which warps with the heat from a light source can be fixed stably.
In addition, according to this configuration, it is possible to reduce the glare due to the directivity of the light source and perform uniform surface light emission.
Furthermore, according to this configuration, surface light emission can be uniformly performed on a surface formed of a plurality of substrates.

本発明に係る照明装置は、電気的に直列に接続された複数の光源からなる光源の列が並列に複数列設けられ、前記光源の列に流す電流の大きさを決める抵抗が、前記最外周にある光源の内側に位置する光源の間の前記係止孔とは異なる位置に配置されて前記基板に装着されていることを特徴とする。
本構成によれば、電気的に直列に接続された複数の光源の列に流す電流の大きさを決める抵抗を最外周にある光源の内側に位置する光源の間の係止孔とは異なる位置に設けるので、該抵抗を装着するために基板の端部に余分な部分を設ける必要がなく、基板を小型化しつつ、均一な面発光が可能となる。 In the illumination device according to the present invention, a plurality of light source rows each including a plurality of light sources electrically connected in series are provided in parallel, and a resistor that determines a magnitude of a current flowing through the light source row is the outermost periphery. The light source located inside the light source is disposed at a position different from the locking hole between the light sources, and is mounted on the substrate.
According to this configuration, the resistance that determines the magnitude of the current flowing in the row of the plurality of light sources electrically connected in series is different from the locking hole between the light sources located inside the light source at the outermost periphery. Therefore, it is not necessary to provide an extra portion at the end portion of the substrate in order to attach the resistor, and uniform surface light emission is possible while miniaturizing the substrate.

本願発明の照明装置によれば、照明する全面に渡って、均一な照明とすることが可能であり、光源の指向性によるグレアを緩和して均一な面発光をするとともに、指向性のある複数の光源を装着した基板を小型化することが可能である。   According to the illuminating device of the present invention, uniform illumination can be achieved over the entire surface to be illuminated, glare due to directivity of the light source is reduced, uniform surface emission is performed, and a plurality of directional devices are provided. It is possible to reduce the size of the substrate on which the light source is mounted.

本発明に係る実施の形態１のＬＥＤ照明装置の斜視図である。It is a perspective view of the LED lighting apparatus of Embodiment 1 which concerns on this invention. 本発明に係る実施の形態１のＬＥＤ照明装置の要部分解斜視図である。It is a principal part disassembled perspective view of the LED lighting apparatus of Embodiment 1 which concerns on this invention. 複数のＬＥＤが装着されたＬＥＤ基板の平面図である。It is a top view of the LED board | substrate with which several LED was mounted | worn. 放熱板に設けられた複数のＬＥＤ基板の平面図である。It is a top view of the some LED board provided in the heat sink. 本発明に係る実施の形態２のＬＥＤ照明装置の要部分解斜視図である。It is a principal part disassembled perspective view of the LED lighting apparatus of Embodiment 2 which concerns on this invention. 本発明に係る実施の形態３のＬＥＤ照明装置の斜視図である。It is a perspective view of the LED lighting apparatus of Embodiment 3 which concerns on this invention. 本発明に係る実施の形態３のＬＥＤ照明装置の要部分解斜視図である。It is a principal part disassembled perspective view of the LED lighting apparatus of Embodiment 3 which concerns on this invention. 従来のＬＥＤ照明装置を示す図である。It is a figure which shows the conventional LED lighting apparatus.

以下、本発明の実施の形態について図面を参照して説明する。
なお、実施の形態の説明において、照明装置として、ＬＥＤを光源としたＬＥＤ照明装置を例示して説明するが、これに限定されず他の光源を用いた照明装置であってもよく、特に指向性のある（強い）光源を用いた照明装置であれば、本発明は好適に適用できる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the description of the embodiments, an LED illumination device using LEDs as a light source will be described as an example of the illumination device. However, the present invention is not limited to this, and an illumination device using other light sources may be used. The present invention can be suitably applied to any lighting device that uses a characteristic (strong) light source.

（実施の形態１）
図１は、本発明に係る実施の形態１のＬＥＤ照明装置の斜視図である。図２は、本発明に係る実施の形態１のＬＥＤ照明装置の要部分解斜視図である。図３は、複数のＬＥＤが装着されたＬＥＤ基板の平面図である。図４は、放熱板に設けられた複数のＬＥＤ基板の平面図である。 (Embodiment 1)
FIG. 1 is a perspective view of the LED lighting apparatus according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of a main part of the LED lighting device according to the first embodiment of the present invention. FIG. 3 is a plan view of an LED substrate on which a plurality of LEDs are mounted. FIG. 4 is a plan view of a plurality of LED substrates provided on the heat sink.

まず、図１及び図２を参照して、ＬＥＤ照明装置１の構成について説明する。ＬＥＤ照明装置１は、複数のＬＥＤ６が装着されたＬＥＤ基板７と、ＬＥＤ６に電源を供給する電源部（図示せず）と、ＬＥＤ基板７を取り付けＬＥＤ６からの熱を放熱する放熱板５と、ＬＥＤ６からの光を拡散する拡散板４と、ＬＥＤ基板７と放熱板５と電源回路を収容する収容部材２と、収容部材２を固定するフレーム３とから構成される。   First, with reference to FIG.1 and FIG.2, the structure of the LED lighting apparatus 1 is demonstrated. The LED lighting device 1 includes an LED board 7 on which a plurality of LEDs 6 are mounted, a power supply unit (not shown) that supplies power to the LEDs 6, a heat radiating plate 5 that attaches the LED board 7 and radiates heat from the LEDs 6, It is comprised from the diffuser plate 4 which diffuses the light from LED6, the LED board 7, the heat sink 5, the accommodating member 2 which accommodates a power supply circuit, and the flame | frame 3 which fixes the accommodating member 2. As shown in FIG.

収容部材２は、例えばアルミニウム等の金属から成り、正方形の底面２ａと該底面の四辺端部の立ち上がり部２ｂから構成される。収容部材２を熱伝導性の高いアルミニウムで形成することにより、ＬＥＤ６及び／又は電源部の熱源から生じる熱を効率よく放熱することができ、かつ軽量の照明装置とすることが可能となる。また、収容部材２の底面２ａには、複数の突出面２ｃがＬＥＤ基板７の設けられる側に突出して形成されており、複数の突出面２ｃにて放熱板５を支持する構成である。よって、放熱板５が収容部材２の底面２ａに面全体に装着されていないので、収容部材２に外部から衝撃が加わった場合でも、収容部材２の撓みを吸収することができ、照明装置の信頼性を高めることができる。   The housing member 2 is made of, for example, a metal such as aluminum, and includes a square bottom surface 2a and rising portions 2b at four side ends of the bottom surface. By forming the housing member 2 from aluminum having high thermal conductivity, it is possible to efficiently dissipate the heat generated from the heat source of the LED 6 and / or the power supply unit, and to make a lightweight lighting device. In addition, a plurality of projecting surfaces 2 c are formed on the bottom surface 2 a of the housing member 2 so as to project to the side where the LED substrate 7 is provided, and the heat radiating plate 5 is supported by the plurality of projecting surfaces 2 c. Therefore, since the heat radiating plate 5 is not attached to the entire bottom surface 2a of the housing member 2, even when an impact is applied to the housing member 2 from the outside, the bending of the housing member 2 can be absorbed. Reliability can be increased.

フレーム３は、フレーム３枠内に拡散板４を嵌装して保持し、収容部材２の底面２ａの端部に形成された立ち上がり部２ｂを四方からフレーム３枠内に嵌めこみ、ＬＥＤ照明装置１の各部材を固定する。収容部材２及びフレーム３によりＬＥＤ照明装置１の外枠が構成される。   The frame 3 has the diffusion plate 4 fitted and held in the frame 3, and the rising portion 2 b formed at the end of the bottom surface 2 a of the housing member 2 is fitted into the frame 3 from four sides, so that the LED lighting device Each member of 1 is fixed. The housing member 2 and the frame 3 constitute an outer frame of the LED lighting device 1.

拡散板４は、拡散剤が添加された乳白色の樹脂（例えば、アクリル樹脂やポリカーボネート樹脂等）からなり、ＬＥＤ基板７（ＬＥＤ６）から一定の距離を保つように、フレーム３の枠内に嵌装されて保持される。拡散板４により、点光源である複数のＬＥＤ６からの光が拡散され面発光させることでできる。しかし、ＬＥＤ６は指向性の強い光源である為、ＬＥＤ基板７から拡散板４の距離によって拡散板４を透過して見える光の見え方は異なる。拡散板４にて均一に面発光とするために、ＬＥＤ基板７までの距離をどのように設定して拡散板４を保持するかについては後述する。   The diffusing plate 4 is made of milky white resin (for example, acrylic resin or polycarbonate resin) to which a diffusing agent is added, and is fitted in the frame 3 so as to keep a certain distance from the LED substrate 7 (LED 6). Being held. The light from the plurality of LEDs 6 that are point light sources is diffused by the diffusing plate 4 and can be surface-emitted. However, since the LED 6 is a light source with strong directivity, the way the light that is seen through the diffusion plate 4 is different depending on the distance from the LED substrate 7 to the diffusion plate 4. How to set the distance to the LED substrate 7 and hold the diffusion plate 4 in order to achieve uniform surface emission at the diffusion plate 4 will be described later.

放熱板５は、アルミニウム等の熱伝導性の良い金属であり、平面部５ａと該平面部の端部において収容部材との密着性を高め放熱板の位置ずれを防ぐための立ち上がり部５ｂとから構成される。また、放熱板５には、ＬＥＤ基板７と放熱板５と収容部材２とを係止するための係止孔５ｃと、ＬＥＤ基板７のＬＥＤ６が装着されている面の裏面に取り付けられたコネクタ１０と電源部（図示せず）との接続用の貫通孔５ｄが設けられている。ＬＥＤ基板７、放熱板５及び収容部材２は、係止孔５ｃに例えばネジ等の係止部が挿入され、一体的に係止される。一体的に係止することより、ＬＥＤ基板７からの熱が放熱板５を通して収容部材２に効率的に伝達され、放熱が効果的に為される。   The heat radiating plate 5 is a metal having good thermal conductivity such as aluminum. From the rising portion 5b for improving the adhesion between the flat surface portion 5a and the housing member at the end portion of the flat surface portion and preventing the displacement of the heat radiating plate. Composed. Further, the heat sink 5 has a locking hole 5c for locking the LED board 7, the heat sink 5 and the housing member 2, and a connector attached to the back surface of the LED board 7 on which the LED 6 is mounted. A through-hole 5d for connection between the power supply unit 10 and a power supply unit (not shown) is provided. The LED board 7, the heat sink 5 and the housing member 2 are locked together by inserting a locking portion such as a screw into the locking hole 5c. By integrally locking, the heat from the LED board 7 is efficiently transmitted to the housing member 2 through the heat radiating plate 5, and heat radiation is effectively performed.

ＬＥＤ基板７は、ガラス繊維を含有するエポキシ樹脂製の平板の基板であり、熱伝導性を良好にするために基板の厚みは薄くしてある。また、ＬＥＤ６からＬＥＤ基板７側に出射される一部の光がＬＥＤ基板７にて吸収されないように、ＬＥＤ基板７のＬＥＤ６が装着される表面は白色のレジスト膜が形成されていることが好ましい。   The LED substrate 7 is a flat substrate made of an epoxy resin containing glass fiber, and the thickness of the substrate is reduced in order to improve thermal conductivity. Moreover, it is preferable that a white resist film is formed on the surface of the LED substrate 7 on which the LED 6 is mounted so that a part of light emitted from the LED 6 toward the LED substrate 7 is not absorbed by the LED substrate 7. .

電源部は、商用電源を降圧する電圧変換部と、交流電圧を整流・平滑化する整流回路部と、ＬＥＤ６に定電流を流す定電流回路部から構成される。本実施の形態では電源部は図示していないが、収容部材２の内部に設けてもよく、また、収容部材２と別体として、ＬＥＤ照明装置１の外部に設けてもよい。ＬＥＤ照明装置１の内部に設ける場合には、放熱板５のＬＥＤ基板７が設けられる面と同一面に設置してもよく（図５参照）、また、放熱板５のＬＥＤ基板７が設けられる面の裏面に設置してもよい。   The power supply unit includes a voltage conversion unit that steps down a commercial power supply, a rectification circuit unit that rectifies and smoothes an AC voltage, and a constant current circuit unit that supplies a constant current to the LED 6. Although the power supply unit is not illustrated in the present embodiment, it may be provided inside the housing member 2, or may be provided outside the LED lighting device 1 as a separate body from the housing member 2. When provided inside the LED lighting device 1, it may be installed on the same surface as the surface on which the LED substrate 7 of the heat sink 5 is provided (see FIG. 5), and the LED substrate 7 of the heat sink 5 is provided. You may install in the back surface.

ただし、ＬＥＤ照明装置１からの光を均一に面発光させるためには、電源部がＬＥＤ基板７の設けられる面よりも、ＬＥＤ基板７の設けられる面の裏面にある方が、電源部に対応した非発光部がないので好ましい。
次に、図３及び図４を参照して、ＬＥＤ基板７と、放熱板５におけるＬＥＤ基板７の配置について詳細に説明する。 However, in order to cause the light from the LED lighting device 1 to emit light uniformly, the power supply unit is located on the back side of the surface on which the LED substrate 7 is provided rather than the surface on which the LED substrate 7 is provided. This is preferable because there is no non-light emitting portion.
Next, with reference to FIG.3 and FIG.4, arrangement | positioning of the LED board 7 in the LED board 7 and the heat sink 5 is demonstrated in detail.

図３（ａ）はＬＥＤ基板７のＬＥＤ６が装着された面の平面図であり、図３（ｂ）はＬＥＤ基板７のＬＥＤ６が装着された面の裏面の平面図である。
ＬＥＤ基板７には、複数のＬＥＤ６がマトリクス状に均一の距離（ピッチ）を空けて装着（実装）されている。より具体的には、ＬＥＤ基板７の縦方向（Ｘ方向）に１２個のＬＥＤ６がＬＥＤ間の距離を１２ｍｍ、ＬＥＤ基板７端部からの距離を５ｍｍとして一列に配置され、ＬＥＤ基板７の横方向（Ｙ方向）にその１２個のＬＥＤ６を１列としてＬＥＤ間の距離（列間の距離）を１２ｍｍ、ＬＥＤ基板７端部からの距離を５ｍｍとして配置されている。よって、一枚のＬＥＤ基板７上に、７２個のＬＥＤ６が等距離（１２ｍｍ）に、ＬＥＤ基板７の端部から一定の距離（５ｍｍ）を空けて、マトリクス状に装着されていることになる。 3A is a plan view of the surface of the LED substrate 7 on which the LED 6 is mounted, and FIG. 3B is a plan view of the back surface of the surface of the LED substrate 7 on which the LED 6 is mounted.
A plurality of LEDs 6 are mounted (mounted) on the LED substrate 7 at a uniform distance (pitch) in a matrix. More specifically, twelve LEDs 6 are arranged in a line in the vertical direction (X direction) of the LED board 7 with the distance between the LEDs being 12 mm and the distance from the end of the LED board 7 being 5 mm. In the direction (Y direction), the 12 LEDs 6 are arranged in one row, the distance between the LEDs (distance between the rows) is 12 mm, and the distance from the end of the LED substrate 7 is 5 mm. Therefore, 72 LEDs 6 are mounted on a single LED board 7 in a matrix form at an equal distance (12 mm) and a fixed distance (5 mm) from the end of the LED board 7. .

本実施の形態に採用されるＬＥＤ６は、図に示すように直方体であって縦方向に長いが、ＬＥＤ６のほぼ中心にあるＬＥＤ素子が実装されている発光部を基準として、各ＬＥＤ間の距離を定義すると、縦方向及び横方向の隣り合うＬＥＤ間の距離は全て等しい。（以下の説明において、ＬＥＤ間の距離の定義は上記の通りとする。）
よって、１つのＬＥＤ基板７内においてもＬＥＤ６が均一に面発光する。さらに、ＬＥＤ基板７を同じ方向に並べて配置する場合だけでなく、縦方向及び横方向に組み合わせて配置した場合においても、隣り合うＬＥＤ基板７の近接して対向するＬＥＤ６の距離は等しくなり、複数のＬＥＤ基板７からなる面にて均一に面発光が可能となる。 The LED 6 employed in the present embodiment is a rectangular parallelepiped as shown in the figure and is long in the vertical direction, but the distance between the LEDs is based on the light emitting part on which the LED element at the center of the LED 6 is mounted. , The distances between adjacent LEDs in the vertical and horizontal directions are all equal. (In the following description, the definition of the distance between LEDs is as described above.)
Therefore, the LEDs 6 emit surface light evenly within one LED substrate 7. Further, not only when the LED substrates 7 are arranged side by side in the same direction, but also when the LED substrates 7 are arranged in combination in the vertical direction and the horizontal direction, the distances between the LEDs 6 adjacent to each other adjacent to each other are equal, Surface emission can be performed uniformly on the surface of the LED substrate 7.

また、ＬＥＤ６の配置はマトリクス状に限定されず、ＬＥＤ間の距離が等しく設定されていれば他の配置であってもよい。例えば、ＬＥＤ６を結ぶ線が正三角形を形成するような、千鳥状の配置も考えられる。千鳥状の配置であれば、ＬＥＤ間の距離をマトリクス状に配置した場合のＬＥＤ間の距離を同じにすることを条件として、マトリクス状の配置に比べて単位面積あたりのＬＥＤ６が少なくなる。よって、単位面積あたりの輝度自体は低下するが、より少ないＬＥＤ６で均一な面発光が可能となり、ＬＥＤ照明装置１のコストを下げることが可能となる。   Further, the arrangement of the LEDs 6 is not limited to a matrix, and other arrangements may be used as long as the distance between the LEDs is set equal. For example, a staggered arrangement in which the lines connecting the LEDs 6 form a regular triangle is also conceivable. In the staggered arrangement, the number of LEDs 6 per unit area is smaller than that in the matrix arrangement, provided that the distance between the LEDs when the distance between the LEDs is arranged in a matrix is the same. Therefore, although the luminance per unit area itself is reduced, uniform surface light emission is possible with fewer LEDs 6, and the cost of the LED lighting device 1 can be reduced.

また、ＬＥＤ基板７のＬＥＤ６間には、ＬＥＤ基板７を放熱板５及び収容部材２の突出面２ｃに係止するための装着部である係止孔が８設けられている。従来のＬＥＤ基板では、係止孔がＬＥＤ基板の両端等の端部に設置されており、ＬＥＤ基板を並べて設置した場合には、係止部が設けられた両端部ではＬＥＤによる発光がなく、その部分のみが暗くなり、複数のＬＥＤ基板からなる面にて均一な面発光ができなかった。従って、本実施の形態のように、係止孔８をＬＥＤ６間に設けることにより、係止孔８をＬＥＤ基板７の両端部に余分に設ける必要がなくなり、ＬＥＤ基板７を複数並べてＬＥＤ照明装置を構成した場合であっても、均一な面発光が可能となる。さらに、ＬＥＤ基板７の小型化も可能になる。   Further, between the LEDs 6 of the LED substrate 7, there are provided 8 locking holes which are mounting portions for locking the LED substrate 7 to the heat sink 5 and the protruding surface 2 c of the housing member 2. In the conventional LED board, the locking holes are installed at the ends such as both ends of the LED board, and when the LED boards are installed side by side, there is no light emission by the LED at the both ends provided with the locking parts, Only that portion was darkened, and uniform surface light emission could not be performed on the surface composed of a plurality of LED substrates. Accordingly, by providing the locking holes 8 between the LEDs 6 as in the present embodiment, there is no need to provide extra locking holes 8 at both ends of the LED board 7, and a plurality of LED boards 7 are arranged side by side to provide the LED lighting device. Even when configured, uniform surface light emission is possible. Further, the LED substrate 7 can be downsized.

また、係止孔８は、ＬＥＤ基板７に設けられた複数のＬＥＤ６の内、最外周部のＬＥＤ６とその１つ内側のＬＥＤ６との間にＬＥＤ基板７の四角に対応して４つ設けられている。ＬＥＤ基板７のできるだけ外周部において、かつＬＥＤ基板７の四角に対応した４つの係止孔８にてＬＥＤ基板７を係止することにより、ＬＥＤ６からの熱で反ろうとするＬＥＤ基板７を安定的に固定することができる。   In addition, among the plurality of LEDs 6 provided on the LED substrate 7, four locking holes 8 are provided between the outermost LED 6 and the LED 6 inside one corresponding to the square of the LED substrate 7. ing. By locking the LED board 7 at the outer periphery of the LED board 7 as much as possible and by the four locking holes 8 corresponding to the squares of the LED board 7, the LED board 7 that is warped by the heat from the LED 6 can be stabilized. Can be fixed to.

さらに、ＬＥＤ基板７のＬＥＤ６間の係止孔８が設けられている以外の箇所に、ＬＥＤ６に電気的に接続される電子部品が設けられてもよい。例えば、本実施の形態の場合、直列に接続される複数のＬＥＤ６からなるＬＥＤ列が並列に複数列設けられているが、各ＬＥＤ列には、ＬＥＤ列に流す電流の大きさを決める抵抗９が必要である。抵抗９を、ＬＥＤ間の係止孔８が設けられている以外の箇所（装着部）に設けることにより、係止孔８と同様に抵抗９（電子部品）を装着する為の余分な部分を設ける必要がなく、均一な面発光が可能となる。   Furthermore, an electronic component that is electrically connected to the LED 6 may be provided at a place other than the hole 8 provided between the LEDs 6 of the LED substrate 7. For example, in the case of the present embodiment, a plurality of LED strings each composed of a plurality of LEDs 6 connected in series are provided in parallel, and each LED string has a resistor 9 that determines the magnitude of a current flowing through the LED string. is necessary. By providing the resistor 9 at a place (mounting portion) other than the locking hole 8 between the LEDs, an extra portion for mounting the resistor 9 (electronic component) is provided in the same manner as the locking hole 8. There is no need to provide it, and uniform surface emission is possible.

つまり、ＬＥＤ間の距離を係止孔８及び抵抗９（電子部品）が収まるように設定し、ＬＥＤ間に係止孔８及び抵抗９（電子部品）を装着する装着部を設けることで、均一な面発光が可能と成る。   That is, the distance between the LEDs is set so that the locking hole 8 and the resistor 9 (electronic component) can be accommodated, and the mounting portion for mounting the locking hole 8 and the resistor 9 (electronic component) is provided between the LEDs. Surface emission is possible.

図４は、スクウェア型のＬＥＤ照明装置の放熱板に配置される８枚のＬＥＤ基板の平面図である。
８枚のＬＥＤ基板７はそれぞれ同じ方向を向けて一定の距離を空けて並べて設けられている。ＬＥＤ基板７の距離Ｑは、隣り合って並べられる複数のＬＥＤ基板７の内、ある一方のＬＥＤ基板７に設けられたＬＥＤ６から、隣り合う他方のＬＥＤ基板７に設けられたＬＥＤ６までの距離Ｐが、一方の基板に設けられたＬＥＤ間の距離Ｐと等しくなるように設定されている。 FIG. 4 is a plan view of eight LED substrates arranged on the heat sink of the square type LED lighting device.
The eight LED boards 7 are arranged side by side with a certain distance in the same direction. The distance Q of the LED substrate 7 is a distance P from the LED 6 provided on one LED substrate 7 to the LED 6 provided on the other adjacent LED substrate 7 among the plurality of LED substrates 7 arranged side by side. Is set to be equal to the distance P between the LEDs provided on one substrate.

具体的に示すと、ＬＥＤ基板７の最外周部のＬＥＤ６はＬＥＤ基板７の端部から５ｍｍの距離の位置に設けられ、ＬＥＤ基板７間の距離Ｑは２ｍｍとなるように配置されている。よって、ある一方のＬＥＤ基板７に設けられたＬＥＤ６から、隣り合う他方のＬＥＤ基板７に設けられたＬＥＤ６までの距離は１２ｍｍとなり、ＬＥＤ基板内のＬＥＤ間の距離Ｐ（１２ｍｍ）と等しい。   Specifically, the outermost peripheral LED 6 of the LED board 7 is provided at a distance of 5 mm from the end of the LED board 7, and the distance Q between the LED boards 7 is 2 mm. Therefore, the distance from the LED 6 provided on one LED board 7 to the LED 6 provided on the other adjacent LED board 7 is 12 mm, which is equal to the distance P (12 mm) between the LEDs in the LED board.

また、上述したようにＬＥＤ基板７の方向を縦と横の何れの方向に変えて並べてもＬＥＤ間の距離は等しいので、複数の基板を縦と横の何れの方向を向けて並べても、ＬＥＤ基板７の距離Ｑを２ｍｍとするように配置する限り、複数のＬＥＤ基板７から構成される発光面は、均一に面発光する。
以上、実施の形態１はスクウェア型のＬＥＤ照明装置１であるので、正方形となるようにＬＥＤ基板７を並べているが、ＬＥＤ照明装置はスクウェア型に限らず他の形状であっても、上記ＬＥＤ基板７の距離Ｑを一定とする限り、ＬＥＤ基板７の配列を変えるだけで、様々な形状の均一な面発光が可能なＬＥＤ照明装置に対応が可能である。 In addition, as described above, the distance between the LEDs is the same even if the direction of the LED substrate 7 is changed to the vertical or horizontal direction, so that the LED is the same regardless of the vertical or horizontal direction. As long as it arrange | positions so that the distance Q of the board | substrate 7 shall be 2 mm, the light emission surface comprised from the some LED board 7 carries out surface light emission uniformly.
As described above, since the first embodiment is the square type LED lighting device 1, the LED substrates 7 are arranged so as to be square. However, the LED lighting device is not limited to the square type, and the above LED may be used. As long as the distance Q of the substrate 7 is constant, it is possible to deal with LED lighting devices capable of uniform surface emission of various shapes by simply changing the arrangement of the LED substrates 7.

次に、ＬＥＤ基板７から拡散板４までの距離とＬＥＤ６間の距離Ｐの関係について説明する。
ＬＥＤのような指向性が強い光源を照明装置に用いた場合は、ＬＥＤ基板から拡散板までの距離が小さい場合には、ＬＥＤ６からの光を十分に拡散することができないため、ＬＥＤのグレアが解消できず均一な面発光ができなかった。よって、本実施の形態では、拡散板４は、ＬＥＤ基板７に設けられるＬＥＤ間の距離Ｐ（１２ｍｍ）よりも大きい距離を、ＬＥＤ基板７から離して保持されている。よって、ＬＥＤ６からの光が拡散板４に到達する前に広がるので、拡散板４にてＬＥＤ６のグレアを解消した面発光が可能である。 Next, the relationship between the distance from the LED substrate 7 to the diffusion plate 4 and the distance P between the LEDs 6 will be described.
When a light source with strong directivity such as LED is used in the lighting device, if the distance from the LED substrate to the diffusion plate is small, the light from the LED 6 cannot be sufficiently diffused. Unable to resolve and uniform surface light emission could not be achieved. Therefore, in the present embodiment, the diffusion plate 4 is held away from the LED substrate 7 at a distance larger than the distance P (12 mm) between the LEDs provided on the LED substrate 7. Therefore, since the light from the LED 6 spreads before reaching the diffusion plate 4, surface light emission in which the glare of the LED 6 is eliminated by the diffusion plate 4 is possible.

拡散板４とＬＥＤ基板７との距離を離すほど、ＬＥＤ６からの光が拡散板４に到達する前に広がるので、拡散板４にて均一な面発光が可能となるが、ＬＥＤ照明装置の厚さが大きくなってしまう。しかし、様々な距離を空けて実験を行った結果、拡散板４とＬＥＤ基板７との距離をＬＥＤ間の距離Ｐに対して大きくすれば、上記効果はある程度得られることが分かった。よって、ＬＥＤ照明装置１の薄型化と面均一発光の為には、拡散板４とＬＥＤ基板７との距離をＬＥＤ基板７のＬＥＤ間の距離Ｐと同じにすることが好ましい。   As the distance between the diffuser plate 4 and the LED substrate 7 increases, the light from the LED 6 spreads before reaching the diffuser plate 4, so that the diffuser plate 4 can emit light evenly. Will become bigger. However, as a result of conducting experiments at various distances, it has been found that the above-described effect can be obtained to some extent if the distance between the diffusion plate 4 and the LED substrate 7 is made larger than the distance P between the LEDs. Therefore, in order to reduce the thickness of the LED lighting device 1 and to emit light uniformly, it is preferable that the distance between the diffusion plate 4 and the LED substrate 7 is the same as the distance P between the LEDs on the LED substrate 7.

（実施の形態２）
図５は、本発明に係る実施の形態１の変形例であって、電源部１１をＬＥＤ照明装置２１の内部に設けたＬＥＤ照明装置２１の要部分解斜視図である。実施の形態１との共通の部分に関しては図面に同一の符号を付して説明を省略し、実施の形態２の特徴部分について説明をする。 (Embodiment 2)
FIG. 5 is a modified example of the first embodiment according to the present invention, and is an exploded perspective view of a main part of the LED lighting device 21 in which the power supply unit 11 is provided inside the LED lighting device 21. With respect to the parts common to the first embodiment, the same reference numerals are attached to the drawings and the description thereof will be omitted, and the characteristic parts of the second embodiment will be described.

放熱板５の中央部に電源部１１が設けられ、電源部１１の周辺に電源部１１を囲うようにＬＥＤ基板７が配置されている。ＬＥＤ基板７は隣り合うＬＥＤ基板７に対して一定の距離（２ｍｍ）を空けて配置されているので、縦方向と横方向のＬＥＤ基板７が組み合わさっているが、上述したように隣り合うＬＥＤ基板７間のＬＥＤ６の距離と、ＬＥＤ基板７内のＬＥＤ６間の距離は等しくなっている。よって、電源部１１の周辺では均一な面発光が可能である。   A power supply unit 11 is provided at the center of the heat sink 5, and the LED substrate 7 is disposed around the power supply unit 11 so as to surround the power supply unit 11. Since the LED substrate 7 is arranged at a certain distance (2 mm) from the adjacent LED substrate 7, the LED substrate 7 in the vertical direction and the horizontal direction are combined. The distance between the LEDs 6 between the substrates 7 and the distance between the LEDs 6 within the LED substrate 7 are equal. Therefore, uniform surface light emission is possible around the power supply unit 11.

また、図５では、電源部１１が３つの部分に分けられた部分電源部１２から構成されているが、これに限らず電源部１１と、照射面の照度を計測する照度センサ部や人から発せられる赤外線を検知する人感センサ部等のセンサ部及び／又はセンサ部の検知結果に基づいてＬＥＤのＯＮ／ＯＦＦや輝度を制御する駆動制御部とから構成されていてもよい。
さらに、電源部１１が設けられる位置は放熱板５の中央部に限らず、図１に示すように中央部にＬＥＤ基板７を並べて配置し、その周辺に電源部１１が配置されてもよい。 Moreover, in FIG. 5, although the power supply part 11 is comprised from the partial power supply part 12 divided | segmented into three parts, it is not restricted to this but from the power supply part 11 and the illumination intensity sensor part and person who measure the illumination intensity of an irradiation surface You may comprise from sensor parts, such as a human sensitive sensor part which detects the emitted infrared rays, and / or the drive control part which controls ON / OFF of LED and a brightness based on the detection result of a sensor part.
Furthermore, the position where the power supply unit 11 is provided is not limited to the central part of the heat sink 5, and the LED substrate 7 may be arranged side by side in the central part as shown in FIG.

（実施の形態３）
実施の形態１及び２の照明装置はスクウェア型のＬＥＤ照明装置であったが、照明装置の形状は他の形状であってもよく、実施の形態３の照明装置は、ストレート型のＬＥＤ照明装置である。 (Embodiment 3)
Although the lighting device of Embodiments 1 and 2 is a square type LED lighting device, the shape of the lighting device may be other shapes, and the lighting device of Embodiment 3 is a straight LED lighting device. It is.

図６は、本発明に係る実施の形態３のＬＥＤ照明装置３１の斜視図である。図７は、本発明に係る実施の形態３のＬＥＤ照明装置３１の要部分解斜視図である。実施の形態１又は２との共通の部分に関しては図面に同一の符号を付して説明を省略し、実施の形態３の特徴部分について説明をする。
図６及び図７を参照して、ＬＥＤ照明装置３１の構成について説明する。ＬＥＤ照明装置３１は、複数のＬＥＤが装着されたＬＥＤ基板７と、ＬＥＤに電源を供給する電源部３６と、ＬＥＤ基板７を取り付けＬＥＤからの熱を放熱する放熱板３５と、ＬＥＤからの光を拡散する拡散板３４と、ＬＥＤ基板７と放熱板３５と電源部３６を収容する収容部材３２と、収容部材と拡散板を固定するフレーム（第１のフレーム３３ａ及び第２のフレーム３３ｂ）とから構成される。なお、第１のフレーム３３ａは電源部３６を覆うカバーとしても機能する。 FIG. 6 is a perspective view of the LED illumination device 31 according to the third embodiment of the present invention. FIG. 7 is an exploded perspective view of main parts of the LED lighting device 31 according to the third embodiment of the present invention. The parts common to the first or second embodiment are denoted by the same reference numerals in the drawings, the description thereof is omitted, and the characteristic part of the third embodiment is described.
With reference to FIG.6 and FIG.7, the structure of the LED lighting apparatus 31 is demonstrated. The LED lighting device 31 includes an LED board 7 on which a plurality of LEDs are mounted, a power supply unit 36 that supplies power to the LEDs, a heat sink 35 that attaches the LED board 7 and radiates heat from the LEDs, and light from the LEDs. A diffusion plate 34 that diffuses the LED board, a housing member 32 that houses the LED board 7, the heat radiating plate 35, and the power supply unit 36, and a frame (first frame 33a and second frame 33b) that fixes the housing member and the diffusion plate. Consists of The first frame 33 a also functions as a cover that covers the power supply unit 36.

ＬＥＤ基板７は、実施の形態１又は２と同一のＬＥＤ基板であり、放熱板３５にＬＥＤ基板７が縦方向に縦列に８枚配置されている。ＬＥＤ基板７間の距離は２ｍｍとなるようにＬＥＤ基板７を配置しており、実施の形態１で述べたように、隣り合うＬＥＤ基板間のＬＥＤ６の距離と、ＬＥＤ基板７内のＬＥＤ６間の距離は等しくなっている。よって、ストレート型のＬＥＤ照明装置３１においても均一な面発光が可能である。
以上、実施の形態１から３の説明において、ＬＥＤ基板に装着される複数のＬＥＤは、隣り合うＬＥＤが等距離に設けられている実施形態を例示したが、全てのＬＥＤ間の距離が必ずしも等距離である必要が無く、ＬＥＤ基板間の距離が少なくともＬＥＤ基板の最外周部のＬＥＤ間の距離と等しくなるようにＬＥＤ基板が配置されていれば、ＬＥＤ基板間の非発光部分が暗く目立つことなく、ほぼ均一な面発光が可能となる。 The LED board 7 is the same LED board as in the first or second embodiment, and eight LED boards 7 are arranged in the vertical direction on the heat radiating plate 35. The LED boards 7 are arranged so that the distance between the LED boards 7 is 2 mm. As described in the first embodiment, the distance between the LEDs 6 between adjacent LED boards and the distance between the LEDs 6 in the LED board 7 are as follows. The distance is equal. Therefore, even in the straight type LED lighting device 31, uniform surface light emission is possible.
As described above, in the description of the first to third embodiments, the plurality of LEDs mounted on the LED substrate are illustrated as the embodiments in which adjacent LEDs are provided at equal distances. However, the distance between all the LEDs is not necessarily equal. If the LED board is arranged so that the distance between the LED boards is equal to at least the distance between the LEDs on the outermost peripheral portion of the LED board, the non-light emitting portion between the LED boards is dark and conspicuous. Almost uniform surface light emission is possible.

１、２１、３１ ＬＥＤ照明装置
２、３２ 収容部材
３、 フレーム
４、３４ 拡散板
５、３５ 放熱板
５ｃ 係止孔
６ ＬＥＤ
７ ＬＥＤ基板
８ 係止孔
Ｐ ＬＥＤ間の距離
Ｑ ＬＥＤ基板間の距離 1, 21, 31 LED lighting device 2, 32 Housing member 3, Frame 4, 34 Diffusion plate 5, 35 Heat sink 5c Locking hole 6 LED
7 LED board 8 Locking hole P Distance between LEDs Q Distance between LED boards

Claims (5)

指向性のある複数の光源を装着した基板を一面に備える照明装置において、
前記複数の光源は、隣り合う光源間の距離が等しくなるように前記基板に配置され、
前記基板を前記一面に係止するための係止孔が、前記複数の光源の内で最外周にある光源の内側に位置する光源の間に配置されて前記基板に設けられており、
前記基板は４つの角を有し、
前記係止孔は、前記基板に配置された複数の光源の内、最外周部の光源とその１つ内側の光源との間に前記基板の４つの角に対応して４つ設けられていることを特徴とする照明装置。 In an illuminating device comprising a substrate with a plurality of directional light sources mounted on one side,
The plurality of light sources are arranged on the substrate such that distances between adjacent light sources are equal,
A locking hole for locking the substrate to the one surface is provided between the light sources located inside the light source located at the outermost periphery among the plurality of light sources, and is provided in the substrate .
The substrate has four corners;
Of the plurality of light sources arranged on the substrate, four of the locking holes are provided corresponding to the four corners of the substrate between the light source at the outermost peripheral portion and the light source inside the light source . A lighting device characterized by that. 指向性のある複数の光源を装着した基板を一面に備える照明装置において、
前記複数の光源は、光が均一に発光されるように前記基板に配置され、
前記基板を前記一面に係止するための係止孔が、前記複数の光源の内で最外周にある光源の内側に位置する光源の間に配置されて前記基板に設けられており、
前記基板は４つの角を有し、
前記係止孔は、前記基板に配置された複数の光源の内、最外周部の光源とその１つ内側の光源との間に前記基板の４つの角に対応して４つ設けられていることを特徴とする照明装置。 In an illuminating device comprising a substrate with a plurality of directional light sources mounted on one side,
The plurality of light sources are disposed on the substrate so that light is emitted uniformly,
A locking hole for locking the substrate to the one surface is provided between the light sources located inside the light source located at the outermost periphery among the plurality of light sources, and is provided in the substrate .
The substrate has four corners;
Of the plurality of light sources arranged on the substrate, four of the locking holes are provided corresponding to the four corners of the substrate between the light source at the outermost peripheral portion and the light source inside the light source . A lighting device characterized by that. 前記基板を前記一面に複数並べて備えており、
前記複数の基板は、
ある一方の基板に設けられた光源から、隣り合う他方の基板に設けられた光源までの距離が、前記一方の基板に設けられた光源間の距離と等しくなるように配置されていることを特徴とする請求項１又は２に記載の照明装置。 A plurality of the substrates are arranged on the one surface,
The plurality of substrates are:
The distance between the light source provided on one substrate and the light source provided on the other adjacent substrate is arranged to be equal to the distance between the light sources provided on the one substrate. The lighting device according to claim 1 or 2. 前記基板を前記一面に複数並べて備えており、
前記複数の基板は、
前記一面において光が均一に発光されるように配置されていることを特徴とする請求項１又は２に記載の照明装置。 A plurality of the substrates are arranged on the one surface,
The plurality of substrates are:
The lighting device according to claim 1, wherein the lighting device is arranged so that light is uniformly emitted on the one surface. 電気的に直列に接続された複数の光源からなる光源の列が並列に複数列設けられ、
前記光源の列に流す電流の大きさを決める抵抗が、前記最外周にある光源の内側に位置する光源の間の前記係止孔とは異なる位置に配置されて前記基板に装着されていることを特徴とする請求項１から４までのいずれか一つに記載の照明装置。 A plurality of rows of light sources consisting of a plurality of light sources electrically connected in series are provided in parallel,
A resistor that determines the magnitude of the current flowing through the light source row is disposed at a position different from the locking hole between the light sources located on the inner side of the light source on the outermost periphery, and is mounted on the substrate. The lighting device according to any one of claims 1 to 4, wherein
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