JP4880637B2 - Long distance LED lighting fixture - Google Patents

Long distance LED lighting fixture Download PDF

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JP4880637B2
JP4880637B2 JP2008117843A JP2008117843A JP4880637B2 JP 4880637 B2 JP4880637 B2 JP 4880637B2 JP 2008117843 A JP2008117843 A JP 2008117843A JP 2008117843 A JP2008117843 A JP 2008117843A JP 4880637 B2 JP4880637 B2 JP 4880637B2
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JP2009245910A (en
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陽一 小田
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株式会社イネックス
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Description

本発明は、遠距離到達照明器具を、ＬＥＤを使用して実現しようとするものである。ＬＥＤは点光源で、対象物の所定の面積を所定の照度にするには、ＬＥＤチップの光を効率よく集光し、対象物に無駄なく収束させる技術が必要で、本発明は、それを実現するためのものである。  The present invention seeks to implement a long range luminaire using LEDs. An LED is a point light source, and in order to make a predetermined area of an object have a predetermined illuminance, a technique for efficiently condensing the light of the LED chip and converging it on the object without waste is required. It is for realization.

従来の遠距離照明器具には、高輝度、大容量のメタルハライドランプ等が主として用いられていが、昨今の喫緊の課題となっているＣＯ２削減のニーズに対応するためには、消費電力が１／６から１／１０に削減可能なＬＥＤを使用した照明器具の開発が必須となっている。Conventional long-distance lighting fixtures mainly use high-luminance, large-capacity metal halide lamps, etc., but power consumption is 1 to meet the current pressing need for CO 2 reduction. Development of lighting fixtures using LEDs that can be reduced from / 6 to 1/10 is essential.

ＬＥＤを使用して遠距離にある対象物を照明しようとする時、点光源であるＬＥＤチップからの光束を効率よく集光し、遠くにある対象物の大きさに合わせたスポットに収束させるには、従来の単一集光レンズを使用する手法やリフレクタや配光レンズを備えているがＬＥＤチップとの間に何も設置しない構成では、ＬＥＤチップからの光は所望の光路以外にも拡散し、概ね距離の二乗分の１に比例して照度が減少するために遠距離到達照明の実現は不可能だった。
特開２００８−１６３４１ 特開２００７−８０８６６ 特開２００６−２４３８１ When trying to illuminate an object at a long distance using an LED, the light flux from the LED chip that is a point light source is efficiently condensed and converged to a spot that matches the size of the object at a distance. In a configuration that uses a conventional single condenser lens, a reflector or a light distribution lens, but nothing is placed between the LED chip, the light from the LED chip diffuses beyond the desired optical path. However, since the illuminance decreases almost in proportion to the square of the distance, it is impossible to realize the long distance reaching illumination.
JP2008-16341 JP2007-80866 JP 2006-24381 A

本発明は、遠距離到達照明器具を、ＬＥＤを使用して実現しようとするものである。そのためには、ＬＥＤチップ２から周辺に拡散する光を、一方の端面が発光方向に指向性を持つ略円錐状に成形されたレンズ５（以下レンズ）で効率よく集光し、レンズ３の出光側端面に近接し、内部が空洞になっている円筒で、レンズ５で集光され外部に拡散しようとする光を封じ込めて対象物に導光し、かつレンズで補足し切れなかった光は、リフレクタ３で補足し、所定の方向に反射、屈折させるなど、光を効率よく、遠くにある対象物の所望の位置、範囲に収束させるための光学的手段の開発が必要となる。  The present invention seeks to implement a long range luminaire using LEDs. For this purpose, the light diffused from the LED chip 2 to the periphery is efficiently condensed by a lens 5 (hereinafter referred to as a lens) having one end face shaped in a substantially conical shape having directivity in the light emission direction. A cylinder that is close to the side end face and is hollow inside, contains light that is collected by the lens 5 and diffused to the outside, guides it to the object, and light that cannot be captured by the lens. It is necessary to develop an optical means for converging light to a desired position and range of an object far away, such as supplementing with the reflector 3 and reflecting or refracting it in a predetermined direction.

本発明は、レンズ５（以下レンズ）の頂点に近接させてＬＥＤチップ２を配置し、円錐の頂角を変えることで、照射対象の距離及び照明スポットの大きさを任意に設定できるようにした。  In the present invention, the LED chip 2 is arranged close to the apex of the lens 5 (hereinafter referred to as a lens), and the apex angle of the cone is changed so that the distance of the irradiation target and the size of the illumination spot can be arbitrarily set. .

また、レンズ５を取り囲むようにリフレクタ３を配し、レンズ５で補足出来なかった光を補足し、所定の方向に反射屈折させながら出光することで、出光効率を向上させる。  Further, the reflector 3 is disposed so as to surround the lens 5, the light that cannot be captured by the lens 5 is captured, and the light is emitted while being reflected and refracted in a predetermined direction, thereby improving the light output efficiency.

また、レンズ３の出光側の端面に近接し、内部が空洞になっている円筒で、レンズ５で集光され外部に拡散しようとする光を封じ込めて対象物に導光する。  Moreover, it is a cylinder that is close to the light exit side end face of the lens 3 and has a hollow inside, and confines the light that is collected by the lens 5 and diffuses to the outside and guides it to the object.

また、レンズ５の出光側の端面に、内部が空洞の円筒（以下円筒）と円筒の外径と概略等しい開口径とリフレクタ３の外形に概略等しい外形を有する透光板４或いはフレネルレンズ４を、リフレクタ３を塞ぐように組み付けることで、ＬＥＤチップ２とレンズ５の位置関係を確定出来るようにした。  Further, a light-transmitting plate 4 or a Fresnel lens 4 having a hollow cylinder (hereinafter referred to as a cylinder) inside and an opening diameter approximately equal to the outer diameter of the cylinder and an outer shape approximately equal to the outer shape of the reflector 3 are provided on the end face on the light output side of the lens 5. By assembling the reflector 3 so as to close it, the positional relationship between the LED chip 2 and the lens 5 can be determined.

また、透光板４或いはフレネルレンズ４およびリフレクタ３に位置決め用の突起或いは凹み（図２）を設けて、両者をかん合させることで、ＬＥＤチップ２とレンズ５の位置関係を補助手段なしで確定することが出来るようにした。
より具体的には、本発明は、リフレクタと、ＬＥＤチップと、内部が空洞になっている円筒とを備え、前記円筒の一方端部には、円錐状のレンズが設けられ、前記円筒の他方端部には、前記円筒に連通した開口と前記リフレクタの外径に概略等しい外径とを有する円板状の透光板が設けられ、前記円筒と前記レンズと前記透光板とが一体的に構成されており、前記レンズの頂点に近接させて前記ＬＥＤチップが配置されており、前記リフレクタは、前記ＬＥＤチップ、前記円筒、および前記レンズを取り囲むように配置され、前記リフレクタと前記円筒との間には空間が設けられており、前記リフレクタと前記透光板とには、位置決め用の突起と凹みとが設けられ、前記突起と前記凹みとを嵌合させることによって、前記透光板が前記リフレクタを塞ぐように組み付けられていることを特徴としている。 Further, the light transmitting plate 4 or the Fresnel lens 4 and the reflector 3 are provided with positioning protrusions or recesses (FIG. 2), and the two are engaged with each other, so that the positional relationship between the LED chip 2 and the lens 5 can be obtained without auxiliary means. I was able to confirm.
More specifically, the present invention includes a reflector, an LED chip, and a cylinder having a hollow inside, and a conical lens is provided at one end of the cylinder, and the other end of the cylinder is provided. A disc-shaped translucent plate having an opening communicating with the cylinder and an outer diameter substantially equal to the outer diameter of the reflector is provided at the end, and the cylinder, the lens, and the translucent plate are integrated. The LED chip is disposed in proximity to the apex of the lens, and the reflector is disposed so as to surround the LED chip, the cylinder, and the lens, and the reflector and the cylinder A space is provided between the reflector and the translucent plate, and a positioning projection and a recess are provided on the reflector and the translucent plate, and the translucent plate is fitted by fitting the projection and the recess. Said refre It is characterized by being assembled so as to close the data.

また、位置決め用のガイドプレート６（図３）を用い、単一照明器具を複数並べることで、要求される到達距離、照度、スポットの面積等に適合した照明器具を実現可能とした。  Further, by using the positioning guide plate 6 (FIG. 3) and arranging a plurality of single lighting fixtures, it is possible to realize a lighting fixture suitable for the required reach distance, illuminance, spot area, and the like.

本発明は、レンズ５の頂点に近接させてＬＥＤチップ２を配置し、略円錐の頂角を変えることで、照射対象の距離及び照明スポットの大きさを任意に設定できる。また、レンズ５で補足出来なかった光は、レンズ５を取り囲むように配置したリフレクタ３で補足し、所定の方向に反射屈折させながら出光することで、出光効率が著しく向上する。
レンズ５の出光側の端面に接して、円筒と円筒の外径と概略等しい開口径とリフレクタ３の外形に概略等しい外形を有する透光板４或いはフレネルレンズ４を、リフレクタ３を塞ぐように組み付けるが、透光板４あるいはフレネルレンズ４およびリフレクタ３に位置決め用の突起或いは凹みを設けて両者をかん合させることで、ＬＥＤチップ２とレンズ５との位置関係を補助手段なしで確定させることが出来る。In the present invention, the LED chip 2 is arranged close to the apex of the lens 5 and the apex angle of the substantially cone is changed, whereby the distance of the irradiation target and the size of the illumination spot can be arbitrarily set. Further, the light that could not be captured by the lens 5 is captured by the reflector 3 disposed so as to surround the lens 5 and is emitted while being reflected and refracted in a predetermined direction, so that the light output efficiency is remarkably improved.
A translucent plate 4 or a Fresnel lens 4 having an opening diameter that is substantially equal to the outer diameter of the cylinder and the cylinder and an outer shape that is approximately equal to the outer shape of the reflector 3 is assembled so as to block the reflector 3 in contact with the end surface on the light output side of the lens 5. However, it is possible to determine the positional relationship between the LED chip 2 and the lens 5 without auxiliary means by providing positioning projections or depressions on the light transmitting plate 4 or the Fresnel lens 4 and the reflector 3 and engaging them together. I can do it.

図１に、本発明の実施例を示す。アルミ基板等の放熱性が良好な基板１に絶縁皮膜を介してＬＥＤチップ２が実装される。ＬＥＤチップ２に近接させて、一方の端面が発光方向に指向性を持つ略円錐状に成形されたレンズ５が配置し、ＬＥＤチップ２とレンズ５との距離、あるいは略円錐の頂角を変えることで、照射対象の距離及び照明スポットの大きさに応じて任意に設定できるようになっている。また、レンズで補足出来なかった光は、レンズを取り囲むように配置したリフレクタ３で補足し、所定の方向に反射屈折させながら出光することで、出光効率が著しく向上する。
ＬＥＤチップ２とレンズの位置関係を確定させるには、レンズ５の出光側に、円筒と円筒の外径と概略等しい開口径とリフレクタ３の外形に概略等しい外形を有する透光板４或いはフレネルレンズ４を、リフレクタ３を塞ぐように組み付ける。その際、図２に示すように、透光板４或いはフレネルレンズ４およびリフレクタ３に位置決め用の突起或いは凹み（拡大図）を設けて両者をかん合させることで、ＬＥＤチップ２とレンズ５との位置関係を補助手段なしで確定させることが出来る。FIG. 1 shows an embodiment of the present invention. The LED chip 2 is mounted on a substrate 1 having good heat dissipation such as an aluminum substrate via an insulating film. A lens 5 having one end face formed in a substantially conical shape having directivity in the light emitting direction is disposed close to the LED chip 2, and the distance between the LED chip 2 and the lens 5 or the apex angle of the substantially cone is changed. Thus, it can be arbitrarily set according to the distance of the irradiation target and the size of the illumination spot. Further, light that cannot be captured by the lens is captured by the reflector 3 disposed so as to surround the lens, and is emitted while being reflected and refracted in a predetermined direction, so that the light output efficiency is significantly improved.
In order to determine the positional relationship between the LED chip 2 and the lens, a translucent plate 4 or a Fresnel lens having an opening diameter substantially equal to the outer diameter of the cylinder and the cylinder and an outer shape approximately equal to the outer shape of the reflector 3 on the light output side of the lens 5. 4 is assembled so as to block the reflector 3. At that time, as shown in FIG. 2, positioning projections or depressions (enlarged views) are provided on the translucent plate 4 or the Fresnel lens 4 and the reflector 3 so that the LED chip 2 and the lens 5 are engaged with each other. Can be determined without auxiliary means.

本発明による遠距離到達ＬＥＤ照明器具の主要部品構成を示す。  1 shows the main component configuration of a long range LED lighting fixture according to the present invention. 本発明による遠距離到達ＬＥＤ照明器具の主要部品組立図を示す。  Fig. 3 shows an assembly diagram of the main parts of a long reach LED luminaire according to the present invention. 本発明による複合型遠距離到達ＬＥＤ照明器具の構成を示す。  1 shows a configuration of a composite far reaching LED luminaire according to the present invention.

符号の説明Explanation of symbols

１ アルミ基板
２ ＬＥＤチップ
３ リフレクタ
４ 透光板或いはフレネルレンズ
５ レンズ
６ ガイドプレート1 Aluminum substrate 2 LED chip 3 Reflector 4 Translucent plate or Fresnel lens 5 Lens 6 Guide plate

Claims (2)

リフレクタと、ＬＥＤチップと、内部が空洞になっている円筒とを備え、
前記円筒の一方端部には、円錐状のレンズが設けられ、前記円筒の他方端部には、前記円筒に連通した開口と前記リフレクタの外径に概略等しい外径とを有する円板状の透光板が設けられ、前記円筒と前記レンズと前記透光板とが一体的に構成されており、
前記レンズの頂点に近接させて前記ＬＥＤチップが配置されており、
前記リフレクタは、前記ＬＥＤチップ、前記円筒、および前記レンズを取り囲むように配置され、前記リフレクタと前記円筒との間には空間が設けられており、
前記リフレクタと前記透光板とには、位置決め用の突起と凹みとが設けられ、前記突起と前記凹みとを嵌合させることによって、前記透光板が前記リフレクタを塞ぐように組み付けられている
ことを特徴とするＬＥＤ照明器具。 A reflector, an LED chip, and a hollow cylinder inside;
A conical lens is provided at one end of the cylinder, and at the other end of the cylinder, a disc-shaped lens having an opening communicating with the cylinder and an outer diameter substantially equal to the outer diameter of the reflector. A translucent plate is provided, and the cylinder, the lens, and the translucent plate are integrally configured,
The LED chip in close proximity to the apex of the lens is disposed,
The reflector is disposed so as to surround the LED chip, the cylinder, and the lens, and a space is provided between the reflector and the cylinder,
The reflector and the translucent plate are provided with positioning projections and recesses, and the translucent plate is assembled so as to block the reflector by fitting the projections and the recesses. An LED lighting apparatus characterized by the above. 請求項１の照明器具を位置決め用のガイドプレートを用いて複数配置した
ことを特徴とするＬＥＤ照明器具。
An LED lighting apparatus comprising: a plurality of the lighting apparatuses according to claim 1 arranged using a guide plate for positioning .
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