JP2010108859A - Glareless luminaire - Google Patents

Glareless luminaire Download PDF

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Publication number
JP2010108859A
JP2010108859A JP2008281896A JP2008281896A JP2010108859A JP 2010108859 A JP2010108859 A JP 2010108859A JP 2008281896 A JP2008281896 A JP 2008281896A JP 2008281896 A JP2008281896 A JP 2008281896A JP 2010108859 A JP2010108859 A JP 2010108859A
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led light
glareless
lamp body
light source
light sources
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Shizuka Ishida
しずか 石田
Keiichi Shimizu
圭一 清水
Satoshi Watanabe
智 渡邊
Yoshiko Fujii
由子 藤井
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Toshiba Lighting and Technology Corp
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Toshiba Lighting and Technology Corp
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Priority to JP2008281896A priority Critical patent/JP2010108859A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a glareless luminaire with LED light sources for securing a desired light-shielding angle even when reducing the height of the luminaire. <P>SOLUTION: The glareless luminaire comprises: a lamp body 1 including a storing recessed portion 1b on the front face side; the plurality of LED light sources 2 distributed from the peak of the storing recessed portion of the lamp body; a plurality of reflecting plates 3 arranged in the storing recessed portion of the lamp body corresponding to the LED light sources in one-to-one relation and reflecting light frontward from the LED light sources; and glareless cones 4 arranged in the storing recessed portion of the lamp body at the front face sides of the reflecting plates corresponding to the LED light sources in one-to-one relation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、LED光源を備えたグレアレス形照明器具に関する。   The present invention relates to a glareless luminaire including an LED light source.

ダウンライト形の照明器具の場合、灯体の開口端側にグレアレスコーンを配設して遮光角を大きくすることで光源および反射板が直視できないようにするのが一般的である。   In the case of a downlight-type lighting fixture, it is common to dispose the glareless cone on the opening end side of the lamp body to increase the light shielding angle so that the light source and the reflector cannot be seen directly.

一方、従来の照明器具に用いている白熱電球、電球形蛍光ランプまたは高輝度放電ランプなどの光源をLED光源に代替した照明器具を得る場合、所望の光束を確保するために複数のLED光源を灯体内の頂面部に分散して配置している(非特許文献1参照。)。また、この種の照明器具では、LED光源が発生する熱を速やかに放散させることがLED光源の発光効率を高く維持するために欠かせない。そのため、灯体を熱良導性金属のアルミニウムを用いているとともに、背面側に放熱フィンを配設するのが効果的である。   On the other hand, when obtaining a luminaire by replacing an LED light source with a light source such as an incandescent bulb, a bulb-type fluorescent lamp or a high-intensity discharge lamp used in a conventional luminaire, a plurality of LED light sources are used to secure a desired luminous flux. Dispersed and arranged on the top surface of the lamp (see Non-Patent Document 1). Further, in this type of lighting fixture, it is indispensable to quickly dissipate the heat generated by the LED light source in order to keep the luminous efficiency of the LED light source high. For this reason, it is effective to use heat-conducting metal aluminum for the lamp body and to dispose heat radiation fins on the back side.

東芝ライテック株式会社の照明器具カタログA−47(16〜18頁)Toshiba Lighting & Technology Corporation Catalog A-47 (pages 16-18)

ところが、LED光源を備えたグレアレス形照明器具においては、分散した複数のLED光源は、見かけ上の光源が大きくなるので、所要の遮光角を得るためには、LED光源を灯体内のより高い位置に配置する必要があり、その結果器具高さが大きくなる。そのため、天井裏の高さに制限がある場合には照明器具の取り付けが不可能になるという問題がある。   However, in a glareless type luminaire equipped with an LED light source, a plurality of dispersed LED light sources have a larger apparent light source, so that the LED light source is positioned higher in the lamp body in order to obtain a required light shielding angle. It is necessary to arrange | position to an instrument height as a result. Therefore, there is a problem that it becomes impossible to attach the lighting fixture when the height of the ceiling is limited.

本発明は、器具高さを短縮しても所望の遮光角を確保できるLED光源を備えたグレアレス形照明器具を提供することを目的とする。   It is an object of the present invention to provide a glareless lighting fixture including an LED light source that can secure a desired light shielding angle even if the fixture height is shortened.

本発明のグレアレス形照明器具は、前面側に収容凹部を備えた灯体と;灯体の収容凹部の頂面部に分散して配置された複数のLED光源と;灯体の収容凹部内においてLED光源ごとに対応して配設され、LED光源から放射された光を前方へ反射する複数の反射板と;灯体の収容凹部内においてLED光源ごとに対応して反射板の前面側に配設されたグレアレスコーンと;を具備していることを特徴としている。   The glare-less luminaire of the present invention includes a lamp body having a housing recess on the front side; a plurality of LED light sources arranged in a distributed manner on the top surface portion of the housing recess of the lamp body; and an LED in the housing recess of the lamp body A plurality of reflectors arranged corresponding to each light source and reflecting light emitted from the LED light sources forward; and arranged on the front side of the reflector corresponding to each LED light source in the housing housing recess And a glareless cone.

本発明は、以下の態様を許容する。   The present invention allows the following aspects.

灯体は、照明器具本体とも称される照明器具の中心的構成部材であるが、LED光源が点灯時に発生する熱を外部へ放散しやすくするために、好ましくは熱良導性金属を用いて構成するのがよい。なお、熱良導性金属として既知の各種金属を用いることができるが、例えばアルミニウム、銅および黄銅などを用いて灯体を製作することができる。なお、熱良導性金属を用いて灯体を構成する場合、背面側に所要の数および面積を有する放熱フィンを一体的に配設することができる。   The lamp body is a central component of the lighting fixture, which is also referred to as the lighting fixture main body. However, in order to easily dissipate the heat generated when the LED light source is turned on, it is preferable to use a heat conductive metal. It should be configured. Various known metals can be used as the heat-conductive metal. For example, the lamp body can be manufactured using aluminum, copper, brass, or the like. In addition, when comprising a lamp body using a heat conductive metal, the radiation fin which has a required number and area can be integrally arrange | positioned on the back side.

また、灯体は、前面側に開口する収容凹部を備えている。収容凹部は、灯体の有底筒状部分によってその内部に形成されていて、最奥部の頂面部および頂面部の周縁から開口部に向かって垂下した周壁面部を有し、灯体の前面に開口部を有している。この収容凹部内には、いずれも後述するLED光源、反射板およびグレアレスコーンを所定の関係になるように収容する。灯体の前面の開口部の周囲に飾り縁を形成することができる。飾り縁は、収容凹部の開口縁から外側へ鍔状に延在して形成されていて、天井下面に当接する。   Moreover, the lamp body is provided with a housing recess that opens to the front side. The housing recess is formed in the interior of the bottomed cylindrical portion of the lamp body, and has a deepest top surface portion and a peripheral wall surface portion that hangs from the periphery of the top surface portion toward the opening, An opening is provided on the front surface. All of the LED light source, the reflecting plate, and the glareless cone, which will be described later, are accommodated in the housing recess so as to have a predetermined relationship. A decorative edge can be formed around the opening on the front surface of the lamp body. The decorative edge is formed to extend outwardly from the opening edge of the housing recess in a bowl shape, and comes into contact with the lower surface of the ceiling.

LED光源は、その複数が分散して灯体の収容凹部の頂面部に配設されている。LED光源の数は、照明器具に設定しようとする光度およびLED光源単体が有する光束値に応じて適当な数のLED光源を用いればよい。   A plurality of LED light sources are dispersed and arranged on the top surface of the housing recess of the lamp body. The number of LED light sources may be an appropriate number of LED light sources depending on the luminous intensity to be set in the lighting fixture and the luminous flux value of the LED light source alone.

なお、LED光源を配設しやすくするために、基板に実装するのが好ましい。基板は、LED光源に対する電源供給のための配線手段を備えていることができる。配線手段としては既知の各種手段を適宜採用することが許容されるが、印刷配線が好適である。また、基板は、複数のLED光源を一括して実装する一体化された構成でもよいし、複数に分割された構成であってもよい。   In order to easily dispose the LED light source, it is preferably mounted on a substrate. The substrate may include wiring means for supplying power to the LED light source. As wiring means, it is allowed to appropriately adopt various known means, but printed wiring is preferable. Further, the substrate may have an integrated configuration in which a plurality of LED light sources are mounted in a lump, or may be a configuration divided into a plurality.

また、LED光源は、灯体の収容凹部の頂面に導熱関係に収容されるのが好ましい。なお、導熱関係とは、LED光源から発生した熱を灯体に伝導しやすいように収容されていることをいい、例えばLED光源またはLED光源を備えた基板を収容凹部の内面に密着させたり、熱伝導の良好なシリコーンなどからなる熱伝導性マットを介して基板を収容凹部に収容したり、熱良導性金属を使用したの基板を採用したりすることができる。   Moreover, it is preferable that the LED light source is housed in a heat conductive relationship on the top surface of the housing housing recess. The heat conduction relationship means that the heat generated from the LED light source is contained so as to be easily conducted to the lamp body, for example, the LED light source or the substrate provided with the LED light source is closely attached to the inner surface of the accommodation recess, The substrate can be accommodated in the accommodating recess through a thermally conductive mat made of silicone or the like having good thermal conductivity, or a substrate using a thermally conductive metal can be employed.

さらに、基板を用いる場合、そこにLED光源の点灯回路をも実装していることが許容される。なお、点灯回路は、電子化されている回路構成であってもよいし、直流電源および限流抵抗を有する簡単な回路構成であってもよい。   Furthermore, when using a board | substrate, it is accept | permitted that the lighting circuit of an LED light source is also mounted there. The lighting circuit may have an electronic circuit configuration or a simple circuit configuration having a DC power source and a current limiting resistor.

反射板は、複数のLED光源に対して1対1の関係にその複数が配設される。また、反射板は、LED光源から放射された光を灯体の開口面から床面に向かうように反射して所望の配光特性を形成するように構成されている。さらに、複数の反射板は、それぞれ回転2次曲面状の反射面を有していて、その頂部側の焦点がLED光源にほぼ一致するようにLED光源を包囲した状態で灯体の収容凹部内に収容される。   A plurality of reflectors are arranged in a one-to-one relationship with a plurality of LED light sources. Further, the reflecting plate is configured to reflect light emitted from the LED light source so as to go from the opening surface of the lamp body to the floor surface to form a desired light distribution characteristic. Further, each of the plurality of reflecting plates has a rotating secondary curved reflecting surface, and surrounds the LED light source so that the focal point on the top side substantially coincides with the LED light source. Is housed in.

グレアレスコーンは、その複数が反射板の開口端と灯体の開口端との間において収容凹部内に配設され、それぞれのLED光源の光軸を包囲する筒状をなしている。また、その内径および内面形状を、LED光源からの直接光が殆どグレアレスコーンに入射しないように構成することができる。   A plurality of the glareless cones are disposed in the housing recesses between the opening end of the reflector and the opening end of the lamp body, and have a cylindrical shape surrounding the optical axis of each LED light source. In addition, the inner diameter and the inner surface shape can be configured so that almost no direct light from the LED light source is incident on the glareless cone.

また、グレアレスコーンは、好ましくは反射鏡と一体化されている。すなわち、グレアレスコーンおよび反射板を一体成形したり、別体のグレアレスコーンおよび反射板を一体的に結合したりする。   The glareless cone is preferably integrated with the reflecting mirror. That is, the glareless cone and the reflector are integrally formed, or the separate glareless cone and the reflector are integrally joined.

本発明によれば、複数のLED光源のそれぞれに対して複数の反射板および複数のグレアレスコーンを組み合わせて灯体の収容凹部内に配設したことにより、器具高さを著しく短縮できるために、天井裏の高さが低い所でも設置が可能なグレアレス形照明器具を提供することができる。   According to the present invention, since the plurality of reflectors and the plurality of glareless cones are combined in each of the plurality of LED light sources and disposed in the housing concave portion, the height of the fixture can be remarkably shortened. In addition, it is possible to provide a glareless lighting device that can be installed even in places where the height of the ceiling is low.

以下、図面を参照して本発明を実施するための形態を説明する。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

図1は、本発明の照明器具を実施するための一形態を示す一部断面正面図である。本形態において、グレアレス形照明器具は、灯体1、LED光源2、反射板3、グレアレスコーン4を具備している。   FIG. 1 is a partial cross-sectional front view showing an embodiment for carrying out the lighting fixture of the present invention. In this embodiment, the glareless lighting fixture includes a lamp body 1, an LED light source 2, a reflector 3, and a glareless cone 4.

灯体1は、アルミニウムのダイキャストにより一体成形されていて、複数の放熱フィン1a、収容凹部1bおよび飾り縁1cを備えている。   The lamp body 1 is integrally formed by die-casting aluminum, and includes a plurality of heat radiation fins 1a, housing recesses 1b, and decorative edges 1c.

複数の放熱フィン1aは、灯体1の背面の全体から背方へ等間隔で並列した状態で凸設されている。ただし、灯体1の円形の背面の中央部に電源導入部などを配設する場合、所要のスペースを確保するために邪魔になる部分は成形しない構造となっている。   The plurality of heat radiating fins 1a are provided so as to protrude from the entire back surface of the lamp body 1 in parallel to each other at equal intervals. However, in the case where a power supply introduction portion or the like is disposed at the center of the circular back surface of the lamp body 1, a portion that becomes an obstacle in order to secure a required space is not formed.

収容凹部1bは、図において断面で示されているが、灯体1の前面に開口する有底円筒状部分の内部に形成されている。そして、最奥部が頂面部1b1で、この頂面1b1の周縁から円筒状に垂下する周壁面部1b2を有している。   The housing recess 1 b is shown in a cross section in the figure, but is formed inside a bottomed cylindrical portion that opens to the front surface of the lamp body 1. And the innermost part is the top surface part 1b1, and it has the surrounding wall surface part 1b2 which hangs down cylindrically from the periphery of this top surface 1b1.

飾り縁1cは、収容凹部1bの開口端から外方ヘ鍔状に延在して形成され、天井下面に当接する。   The decorative edge 1c is formed to extend outward from the opening end of the housing recess 1b and comes into contact with the lower surface of the ceiling.

LED光源2は、その複数が互いに分散して基板2aに実装され、収容凹部1bの頂面部1b1に当接して配設されている。   The plurality of LED light sources 2 are dispersed on each other and mounted on the substrate 2a, and are disposed in contact with the top surface portion 1b1 of the housing recess 1b.

反射板3は、複数のLED光源2に対してその同数が用意され、LED光源2と1対1の関係で配設されている。そして、反射板3は、その全体が収容凹部1b内に収容されている。   The same number of reflectors 3 is prepared for the plurality of LED light sources 2 and is arranged in a one-to-one relationship with the LED light sources 2. And the reflection plate 3 is entirely accommodated in the accommodation recessed part 1b.

グレアレスコーン4は、反射板3と一体成形されていて、反射板3の前面側に各LED光源2に対して1対1の関係において配設されているとともに、その全体が収容凹部1b内に収容されている。グレアレスコーン4の内面は、反射板3の開口端から灯体1の開口端に向かって順次拡開しており、例えば回転2次曲面形状に形成されている。そして、LED光源2からの直射光を反射板3で配光制御するとともに、反射板3で反射した光がグレアレスコーン4にも入射される。   The glareless cone 4 is integrally formed with the reflecting plate 3 and is disposed in a one-to-one relationship with each LED light source 2 on the front surface side of the reflecting plate 3, and the entirety thereof is inside the housing recess 1 b. Is housed in. The inner surface of the glareless cone 4 is sequentially expanded from the opening end of the reflecting plate 3 toward the opening end of the lamp body 1 and is formed in, for example, a rotating quadric surface shape. Then, the direct light from the LED light source 2 is controlled by the reflection plate 3, and the light reflected by the reflection plate 3 is also incident on the glareless cone 4.

また、グレアレスコーン4の内面は、反射板3の傾斜よりも緩やかな傾斜を有することで、灯体1の下端開口部に発光面積を拡大させつつ反射板3の遮光角を所望に確保することができる。なお、図1に示すように、反射板3の下端部とグレアレスコーン4の反対側の下端部とを通る直線と水平線とが形成する角度で規定される遮光角は、45°に設定されている。   Moreover, the inner surface of the glareless cone 4 has a gentler slope than the slope of the reflector 3, thereby ensuring a desired light-shielding angle of the reflector 3 while increasing the light emitting area at the lower end opening of the lamp body 1. be able to. As shown in FIG. 1, the light shielding angle defined by the angle formed by the straight line passing through the lower end portion of the reflector 3 and the lower end portion on the opposite side of the glareless cone 4 and the horizontal line is set to 45 °. ing.

図2は、比較例を示す一部断面正面図である。なお、図において、図1と同一部分には同一符号を付して説明は省略する。   FIG. 2 is a partial cross-sectional front view showing a comparative example. In the figure, the same parts as those in FIG.

この比較例は、複数のLED光源2に対して共通する単一のグレアレスコーン4´を備えているが、LED光源2、反射板3および灯体1の放熱フィン1aは本形態におけるのと同一仕様を備えている。グレアレスコーン4´の内面は、反射板なお、単一のグレアレスコーン4´は、上述の本発明の形態と同じグレアレス作用を奏するために、光軸方向のサイズが大きくなるので、灯体1の下面から垂下するように灯体1に固着されている。   This comparative example includes a single glareless cone 4 'common to a plurality of LED light sources 2, but the LED light source 2, the reflector 3 and the heat dissipating fins 1a of the lamp body 1 are in this embodiment. It has the same specifications. The inner surface of the glareless cone 4 ′ is a reflector, and the single glareless cone 4 ′ has the same glareless action as that of the above-described embodiment of the present invention. 1 is fixed to the lamp body 1 so as to hang from the lower surface of the lamp 1.

そうして、本形態のグレアレス形照明器具と、図2に示す比較例との比較例において、本形態のグレアレス形照明器具は、同じ遮光角で器具高さが比較例のそれより35%小さくなった。   Thus, in the comparative example of the glareless lighting fixture of the present embodiment and the comparative example shown in FIG. 2, the glareless lighting fixture of the present embodiment is 35% smaller than that of the comparative example at the same light blocking angle. became.

本発明の照明器具を実施するための一形態を示す一部断面正面図The partial cross section front view which shows one form for implementing the lighting fixture of this invention 比較例を示す一部断面正面図Partial sectional front view showing a comparative example

符号の説明Explanation of symbols

1…灯体、1a…放熱フィン、1b…収容凹部、1b1…頂面部、1b2…周壁面部、1c…飾り縁、2…LED光源、2a…基板、3…反射板、4…グレアレスコーン   DESCRIPTION OF SYMBOLS 1 ... Lamp body, 1a ... Radiation fin, 1b ... Housing recessed part, 1b1 ... Top surface part, 1b2 ... Peripheral wall part, 1c ... Decoration edge, 2 ... LED light source, 2a ... Board | substrate, 3 ... Reflecting plate, 4 ... Glareless cone

Claims (1)

前面側に収容凹部を備えた灯体と;
灯体の収容凹部の頂面部に分散して配置された複数のLED光源と;
灯体の収容凹部内においてLED光源ごとに対応して配設され、LED光源から放射された光を前方へ反射する複数の反射板と;
灯体の収容凹部内においてLED光源ごとに対応して反射板の前面側に配設されたグレアレスコーンと;
を具備していることを特徴とする照明器具。
A lamp with a housing recess on the front side;
A plurality of LED light sources arranged in a distributed manner on the top surface of the housing recess of the lamp;
A plurality of reflectors disposed corresponding to each LED light source in the housing recess of the lamp body and reflecting light emitted from the LED light source forward;
A glareless cone disposed on the front side of the reflector in correspondence with each LED light source in the housing recess of the lamp body;
The lighting fixture characterized by comprising.
JP2008281896A 2008-10-31 2008-10-31 Glareless luminaire Pending JP2010108859A (en)

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JP2011243534A (en) * 2010-05-21 2011-12-01 Kyocera Corp Light-emitting device and lighting fixture
WO2012065285A1 (en) * 2010-11-19 2012-05-24 宁波赛尔富电子有限公司 Anti-glare led spotlight
KR101786062B1 (en) * 2010-08-11 2017-10-16 엘지이노텍 주식회사 Lighting apparatus
WO2023279994A1 (en) * 2021-07-07 2023-01-12 嘉兴山蒲照明电器有限公司 Lamp having replaceable light source

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011243534A (en) * 2010-05-21 2011-12-01 Kyocera Corp Light-emitting device and lighting fixture
KR101786062B1 (en) * 2010-08-11 2017-10-16 엘지이노텍 주식회사 Lighting apparatus
WO2012065285A1 (en) * 2010-11-19 2012-05-24 宁波赛尔富电子有限公司 Anti-glare led spotlight
WO2023279994A1 (en) * 2021-07-07 2023-01-12 嘉兴山蒲照明电器有限公司 Lamp having replaceable light source

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