JP2005347279A - Luminaire - Google Patents

Luminaire Download PDF

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JP2005347279A
JP2005347279A JP2005214983A JP2005214983A JP2005347279A JP 2005347279 A JP2005347279 A JP 2005347279A JP 2005214983 A JP2005214983 A JP 2005214983A JP 2005214983 A JP2005214983 A JP 2005214983A JP 2005347279 A JP2005347279 A JP 2005347279A
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lens
light
led
lighting fixture
substrate
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JP4155285B2 (en
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一宏 ▲高▼村
Yoshiro Goto
Hiroyuki Sako
Kazuhiro Takamura
芳朗 後藤
浩行 迫
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Matsushita Electric Works Ltd
松下電工株式会社
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00Refractors for light sources
    • F21V5/007Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2105/00Planar light sources
    • F21Y2105/10Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire allowing a lighting region being nearly a circle. <P>SOLUTION: The luminaire comprises a plurality of LED elements 11 each of which provides an almost rectangular light emission distribution. The plurality of LED elements 11 are diposed in nearly a circular region. In the plurality of LED elements 11, at least partial LED elements 11 are arranged as directions of emission distributions of each adjoining LED elements being stagger so that the lighting region illuminated by the light from a plurality of LED elements to be nearly a circle. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、照明器具、特に発光ダイオードを用いた照明器具に関するものである。   The present invention relates to a lighting fixture, and more particularly to a lighting fixture using a light emitting diode.
この種の照明器具としては、図36(a)(b)に示すように、LED素子51を樹脂モールドして砲弾型のレンズ52を一体に形成した光源50を有するものが従来より提供されている(例えば特許文献1参照)。   As this type of lighting fixture, as shown in FIGS. 36 (a) and 36 (b), one having a light source 50 in which an LED element 51 is resin-molded and a bullet-type lens 52 is integrally formed has been conventionally provided. (For example, refer to Patent Document 1).
この照明器具では、LED素子51の光をレンズ52で集光し、さらに一面を梨地処理した透明な樹脂板からなる拡散板53で拡散させることによって、配光を制御している。
特開2000−188002号公報
In this lighting fixture, the light distribution is controlled by condensing the light of the LED element 51 with the lens 52 and further diffusing it with a diffusion plate 53 made of a transparent resin plate with a satin-finished surface.
JP 2000-188002 A
上記構成の照明器具では、LED素子51を樹脂モールドして砲弾型のレンズ52を一体に形成したもの光源50としてを使用しているため、照明器具の配光が使用する光源50によって決定されてしまうという問題があった。例えばLED素子として発光分布が略長方形となる素子を用いる場合に、光の照射範囲を略円形にするためには、特殊なレンズやフィルタを用いる必要があった。   In the lighting fixture having the above configuration, since the LED element 51 is resin-molded and the bullet-shaped lens 52 is integrally formed as the light source 50, the light distribution of the lighting fixture is determined by the light source 50 used. There was a problem that. For example, in the case where an element having a light emission distribution of a substantially rectangular shape is used as the LED element, it is necessary to use a special lens or filter in order to make the light irradiation range substantially circular.
本発明は上記問題点に鑑みて為されたものであり、その目的とするところは、光の照射範囲を略円形にできる照明器具を提供するにある。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting apparatus capable of making the light irradiation range substantially circular.
上記目的を達成するために、請求項1の発明は、複数の発光ダイオード素子を備え、前記複数の発光ダイオード素子は、複数の発光ダイオード素子からの光が照射される照射範囲が略円形となるように配置されたことを特徴とする。   In order to achieve the above object, the invention of claim 1 includes a plurality of light emitting diode elements, and the plurality of light emitting diode elements have a substantially circular irradiation range irradiated with light from the plurality of light emitting diode elements. It is arranged as follows.
この発明によれば、発光ダイオード素子からの光の照射範囲を略円形にすることができる。   According to this invention, the irradiation range of light from the light emitting diode element can be made substantially circular.
請求項2の発明は、請求項1の発明において、上記発光ダイオード素子として発光分布が略長方形となる素子を用い、上記複数の発光ダイオード素子を略円形の領域内に配置し、複数の発光ダイオード素子からの光が照射される照射範囲を略円形とするように、複数の発光ダイオード素子の内、少なくとも一部の発光ダイオード素子は、隣接して配置される発光ダイオード素子に対して発光分布の縦横が互い違いになるようにして配置されたことを特徴とする。   According to a second aspect of the present invention, in the first aspect of the present invention, the light emitting diode element is an element having a light emission distribution of a substantially rectangular shape, the plurality of light emitting diode elements are arranged in a substantially circular region, and the plurality of light emitting diode elements At least some of the light emitting diode elements out of the plurality of light emitting diode elements have a light emission distribution with respect to the light emitting diode elements arranged adjacent to each other so that the irradiation range irradiated with light from the elements is substantially circular. It is characterized by being arranged so that the length and width are alternate.
この発明によれば、請求項1の発明と同様に、発光ダイオード素子からの光の照射範囲を略円形にすることができ、且つ、照射面に対して略均等に光を照射させることができる。   According to the present invention, as in the first aspect of the present invention, the irradiation range of light from the light emitting diode element can be made substantially circular, and the irradiation surface can be irradiated with light substantially evenly. .
請求項3の発明は、請求項1の発明において、上記発光ダイオード素子として発光分布が略長方形となる素子を用い、複数の発光ダイオード素子は、略円形の領域内に、発光分布の長手方向又は短幅方向の何れかが放射線上に位置するように配置されたことを特徴とする。   According to a third aspect of the present invention, in the first aspect of the present invention, an element having a substantially rectangular distribution of light emission is used as the light emitting diode element. It is arranged so that any one of the short width directions is located on the radiation.
この発明によれば、請求項1の発明と同様に、発光ダイオード素子からの光の照射範囲を略円形にすることができる。   According to the present invention, similarly to the first aspect of the present invention, the light irradiation range from the light emitting diode element can be made substantially circular.
請求項4の発明は、請求項1の発明において、上記発光ダイオード素子として発光分布が略長方形となる素子を用い、複数の発光ダイオード素子は、略楕円形の領域内に、発光分布の長手方向が互いに略平行になるように配置されたことを特徴とする。   According to a fourth aspect of the present invention, in the first aspect of the present invention, an element having a substantially rectangular light distribution is used as the light emitting diode element, and the plurality of light emitting diode elements are arranged in a substantially elliptical region in the longitudinal direction of the light distribution. Are arranged so as to be substantially parallel to each other.
この発明によれば、請求項1の発明と同様に、発光ダイオード素子からの光の照射範囲を略円形にすることができる。   According to the present invention, similarly to the first aspect of the present invention, the light irradiation range from the light emitting diode element can be made substantially circular.
本発明によれば、発光ダイオード素子からの光の照射範囲を略円形にすることができる。   According to the present invention, the light irradiation range from the light emitting diode element can be made substantially circular.
以下に本発明の実施の形態を図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the drawings.
(実施形態1)
本発明の実施形態1を図1乃至図7を参照して説明する。この照明器具の下側から見た分解斜視図を図3に、上側から見た分解斜視図を図4にそれぞれ示す。
(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIGS. FIG. 3 shows an exploded perspective view seen from the lower side of the lighting fixture, and FIG. 4 shows an exploded perspective view seen from the upper side.
この照明器具の器体1は合成樹脂製のボディ2とカバー3とを結合して構成される。ボディ2は、略円板状の主部4と、主部4の全周縁から下方に突出する側壁5とを一体に形成して下面が開口した筒状としてある。そして、主部4の下面には後述する基板10に給電するためのコネクタ部8が設けられており、このコネクタ部8は給電線9を介して外部に設けた点灯回路(図示せず)に電気的に接続されている。一方、カバー3は、中央に丸孔状の窓孔6aが開口する底板6と、底板6の外周縁から上方に突出する側壁7とを一体に形成した円筒形としてある。ここで、ボディ2の側壁5の外周面には、カバー3の側壁7の内周面に設けたねじ部7aと螺合するねじ部5aが形成されており、ねじ部5a,7aを螺合させることによってボディ2とカバー3とが結合される。また、ボディ2の主部4には、ボディ2を天井面や壁面などの施工面又は器具本体などの被取付部にねじ止めする際に用いる固定ねじを挿通するための挿通孔4a,4aが設けられている。   The body 1 of this lighting fixture is configured by combining a body 2 made of synthetic resin and a cover 3. The body 2 has a substantially disk-shaped main portion 4 and a side wall 5 that protrudes downward from the entire periphery of the main portion 4 and has a cylindrical shape with an open bottom surface. A connector portion 8 for supplying power to a substrate 10 to be described later is provided on the lower surface of the main portion 4. This connector portion 8 is connected to a lighting circuit (not shown) provided outside via a power supply line 9. Electrically connected. On the other hand, the cover 3 has a cylindrical shape in which a bottom plate 6 having a round hole-shaped window hole 6a at the center and a side wall 7 protruding upward from the outer peripheral edge of the bottom plate 6 are integrally formed. Here, on the outer peripheral surface of the side wall 5 of the body 2, a screw portion 5 a that is screwed with a screw portion 7 a provided on the inner peripheral surface of the side wall 7 of the cover 3 is formed, and the screw portions 5 a and 7 a are screwed together. By doing so, the body 2 and the cover 3 are coupled. The main portion 4 of the body 2 has insertion holes 4a and 4a for inserting fixing screws used when the body 2 is screwed to a construction surface such as a ceiling surface or a wall surface or a mounted portion such as an instrument body. Is provided.
この器体1の内部には、複数の発光ダイオード素子(以下、LED素子と言う。)11が実装された基板10と、複数のLED素子11に対向配置され各LED素子11から放射された光の配光を制御するレンズ体20とが納装される。   Inside the container 1, a substrate 10 on which a plurality of light emitting diode elements (hereinafter referred to as LED elements) 11 are mounted, and light emitted from each LED element 11 disposed opposite to the plurality of LED elements 11. And a lens body 20 for controlling the light distribution.
基板10は略円板状であって、カバー3側の面(下面)には複数のLED素子11が実装され、ボディ2側の面(上面)にはボディ2に設けたコネクタ部8に着脱自在に接続されるコネクタ部12が設けられている。また、基板10には位置決め用の貫通孔10c,10cが基板10の中心に対して対称な位置に形成されている。   The substrate 10 has a substantially disc shape, and a plurality of LED elements 11 are mounted on the surface (lower surface) on the cover 3 side, and is attached to and detached from the connector portion 8 provided on the body 2 on the surface (upper surface) on the body 2 side. A connector portion 12 that is freely connected is provided. In addition, positioning through holes 10 c and 10 c are formed in the substrate 10 at positions symmetrical to the center of the substrate 10.
一方、レンズ体20は透光性を有する材料により、略円板状の主部21と、主部21の全周縁から上方に突出する側壁22とを一体に形成した有底円筒状としてあり、主部21には各LED素子11と対向する部位に各LED素子11の配光を個別に制御するフレネルレンズよりなるレンズ部23が形成されている。また、側壁22の内周面には段部22aが形成され、主部21の上面には基板10の貫通孔10c,10c内にそれぞれ挿入される円柱状の突起21a,21aが突設されている。ここで、図5に示すように、1つのLED素子11に対応して1つのレンズ部23が設けられており、それぞれのレンズ部23は対応する1つのLED素子11からの光の配光を制御している。尚、この照明器具では基板10の中心を中心とする同心円上に複数のLED素子11を二重に配置するとともに、各LED素子11と対向するレンズ体20の部位にレンズ部23を形成しており、LED素子11からの光は略円形の範囲に照射される。   On the other hand, the lens body 20 is made of a material having translucency, and has a substantially disc-shaped main portion 21 and a bottomed cylindrical shape integrally formed with a side wall 22 protruding upward from the entire periphery of the main portion 21. The main portion 21 is formed with a lens portion 23 made of a Fresnel lens for individually controlling the light distribution of each LED element 11 at a portion facing each LED element 11. Further, a step 22 a is formed on the inner peripheral surface of the side wall 22, and columnar protrusions 21 a and 21 a that are respectively inserted into the through holes 10 c and 10 c of the substrate 10 project from the upper surface of the main portion 21. Yes. Here, as shown in FIG. 5, one lens portion 23 is provided corresponding to one LED element 11, and each lens portion 23 distributes light from one corresponding LED element 11. I have control. In this lighting fixture, a plurality of LED elements 11 are arranged in a double manner on a concentric circle centered on the center of the substrate 10, and a lens portion 23 is formed at a portion of the lens body 20 facing each LED element 11. The light from the LED element 11 is irradiated in a substantially circular range.
ここで、この照明器具を組み立てる際には、先ずLED素子11が実装された面を主部21の上面側にし、貫通孔10cと突起21aとの位置を合わせて、レンズ体20の上側から基板10を挿入すると、突起21aが貫通孔10c内に挿入されて、基板10がレンズ体20に対して位置決めされる。そして、基板10をボディ2側にして、基板10を保持したレンズ体20をボディ2内に挿入し、ボディ2のねじ部5aとカバー3のねじ部7aとを螺合させてボディ2にカバー3を結合すると、基板10に設けたコネクタ部12とボディ2に設けたコネクタ部8とが電気的に接続され、外部の点灯回路からLED素子11に動作電源が供給される。この時、レンズ体20に設けたレンズ部23がカバー3の窓孔3aから外部に露出し、レンズ部23により集光された光が窓孔3aから外部に照射される。   Here, when assembling the lighting fixture, first, the surface on which the LED element 11 is mounted is set to the upper surface side of the main portion 21, and the positions of the through holes 10 c and the protrusions 21 a are aligned, and the substrate from above the lens body 20. When 10 is inserted, the protrusion 21 a is inserted into the through hole 10 c and the substrate 10 is positioned with respect to the lens body 20. Then, with the substrate 10 facing the body 2, the lens body 20 holding the substrate 10 is inserted into the body 2, and the screw portion 5a of the body 2 and the screw portion 7a of the cover 3 are screwed together to cover the body 2. When 3 is coupled, the connector portion 12 provided on the substrate 10 and the connector portion 8 provided on the body 2 are electrically connected, and operating power is supplied to the LED element 11 from an external lighting circuit. At this time, the lens part 23 provided in the lens body 20 is exposed to the outside from the window hole 3a of the cover 3, and the light condensed by the lens part 23 is irradiated to the outside from the window hole 3a.
このようにして照明器具を組み立てると、複数のLED素子11に対してレンズ体20に設けた複数のレンズ部23が1:1に対応し、各レンズ部23が対応するLED素子11の配光を個別に制御して、集光させることができる。したがって、複数のLED素子11の配光を個別に制御することにより、全体として照射面の照度を均一にしたり、照射範囲の調整を行うことができる。また、各LED素子11の配光を制御するレンズ体20がLED素子11と別体に設けられているので、レンズ体20を容易に交換することができ、また配光のパターンを変更したい場合にはレンズ体20を交換することによって容易に対応できるから、配光制御の自由度が高いという利点がある。また、複数のレンズ部23は一体に形成されているので、各レンズ部23により対応するLED素子11の光の配光を制御しながら、それらの光を複合した光を1つの光源の光として配光することができる。また、レンズ体20は基板10の形状や寸法に合わせて形成することができ、基板10を覆うようにして取り付けられているので、レンズ体20によって基板10を絶縁することができ、また基板10をレンズ体20に保持させた状態で1つの部品(光源)として取り扱うことができるから、基板10単体で取り扱う場合に比べて作業性が良い。   When the lighting fixture is assembled in this way, the plurality of lens portions 23 provided in the lens body 20 with respect to the plurality of LED elements 11 corresponds to 1: 1, and the light distribution of the LED elements 11 to which each lens portion 23 corresponds. Can be individually controlled to collect light. Therefore, by individually controlling the light distribution of the plurality of LED elements 11, the illuminance on the irradiation surface as a whole can be made uniform or the irradiation range can be adjusted. Moreover, since the lens body 20 for controlling the light distribution of each LED element 11 is provided separately from the LED element 11, the lens body 20 can be easily replaced, and the light distribution pattern is to be changed. Since it can be easily handled by exchanging the lens body 20, there is an advantage that the degree of freedom of light distribution control is high. In addition, since the plurality of lens portions 23 are integrally formed, each lens portion 23 controls the light distribution of the corresponding LED element 11, and combines the light as light of one light source. Can distribute light. Further, the lens body 20 can be formed in accordance with the shape and dimensions of the substrate 10 and is attached so as to cover the substrate 10, so that the substrate 10 can be insulated by the lens body 20. Can be handled as a single component (light source) while being held by the lens body 20, so that the workability is better than when the substrate 10 is handled alone.
尚、この照明器具ではレンズ部23をフレネルレンズにより構成しており、レンズ部23を凸レンズとした場合に比べて薄型に形成でき、レンズ体20の厚みを薄くすることができるが、レンズ部23をフレネルレンズに限定する趣旨のものではなく、LED素子11の配光を制御するのであれば、凸レンズなどのレンズを用いても良いことは勿論のことである。   In this lighting fixture, the lens portion 23 is constituted by a Fresnel lens, and can be formed thinner than the case where the lens portion 23 is a convex lens, and the thickness of the lens body 20 can be reduced. Of course, a lens such as a convex lens may be used as long as the light distribution of the LED element 11 is controlled.
また、この照明器具では、個々のLED素子11に対してレンズ部23を1:1に対応させて設けているが、図6に示すように複数(例えば2個)のLED素子11毎にレンズ部23を1個設け、複数(2個)のLED素子11を1つの光源として取り扱い、1個のレンズ部23で2個のLED素子11の配光を纏めて制御するようにしても良く、1個のレンズ部23に2個のLED素子11の光を入射させることによって、2個のLED素子11の光を混光することができ、しかもLED素子11の数に比べてレンズ部23の数を少なくできるから、レンズ体10を小型化することができる。また、図7に示すように1個のLED素子11に対して複数(例えば2個)のレンズ部23を設け、1個のLED素子11からの光を複数のレンズ部23で別々に集光して、その配光を制御するようにしても良く、1個のLED素子11の光を複数のレンズ部23に入射させることによって、配光の範囲を広げることができ、またレンズ部23毎に透過率を変化させるなどして、照射面に照射される光にアクセントをつけることもできる。   Moreover, in this lighting fixture, the lens part 23 is provided corresponding to 1: 1 for each LED element 11, but as shown in FIG. 6, a lens is provided for each of a plurality of (for example, two) LED elements 11. One unit 23 may be provided, and a plurality of (two) LED elements 11 may be handled as one light source, and the light distribution of the two LED elements 11 may be collectively controlled by one lens unit 23. By making the light of the two LED elements 11 incident on one lens part 23, the light of the two LED elements 11 can be mixed, and moreover the number of the LED parts 11 can be compared with the number of LED elements 11. Since the number can be reduced, the lens body 10 can be reduced in size. Further, as shown in FIG. 7, a plurality of (for example, two) lens portions 23 are provided for one LED element 11, and light from one LED element 11 is separately collected by the plurality of lens portions 23. Then, the light distribution may be controlled, and the range of the light distribution can be widened by making the light of one LED element 11 incident on the plurality of lens portions 23, and for each lens portion 23. It is also possible to accentuate the light irradiated on the irradiation surface by changing the transmittance.
ところで、本実施形態では、LED素子11としてその形状が略直方体状であって、その発光分布が略長方形となるような素子を用いており、複数のLED素子11からの光が照射される照射範囲を略円形とするように、複数のLED素子11の内、少なくとも一部のLED素子11は、隣接して配置されるLED素子11の発光分布の縦横が互い違いになるようにして配置している(図1及び図2(a)(b)参照)。   By the way, in this embodiment, the LED element 11 has an approximately rectangular parallelepiped shape, and an element whose light emission distribution is approximately rectangular, and is irradiated with light from the plurality of LED elements 11. Among the plurality of LED elements 11, at least some of the LED elements 11 are arranged such that the vertical and horizontal emission distributions of the LED elements 11 arranged adjacent to each other are staggered so that the range is substantially circular. (See FIGS. 1 and 2 (a) and 2 (b)).
このように、本実施形態ではLED素子11としてその発光分布が略長方形となるような素子を用い、これらのLED素子11を円形の基板10内に実装しており、一部のLED素子11を、隣接して配置されるLED素子11に対して発光分布の縦横が互い違いになるように配置することによって、照射面に対して略均等に光を照射させ、略円形の照射範囲に光を照射させている。   Thus, in this embodiment, the LED element 11 is an element whose light emission distribution is substantially rectangular, and these LED elements 11 are mounted in a circular substrate 10, and some of the LED elements 11 are mounted. By arranging LED elements 11 arranged adjacent to each other so that the vertical and horizontal directions of the light emission distribution are staggered, the irradiation surface is irradiated with light substantially evenly, and light is irradiated onto a substantially circular irradiation range. I am letting.
(実施形態2)
本発明の実施形態2を図8(a)(b)を参照して説明する。実施形態1ではLED素子11からの光が全体として略円形の領域に照射されるよう、一部のLED素子11を、隣接して配置されるLED素子11に対して発光分布の縦横が互い違いになるように配置しているが、本実施形態では図8(a)に示すように各LED素子11の発光分布の短幅方向が放射線上に配置されるように各LED素子11を配置したり、図8(b)に示すように各LED素子11の発光分布の長手方向が放射線上に配置されるように各LED素子11を配置しおり、発光分布の短幅方向又は長手方向の何れかが放射線状に配置されるように各LED素子11を配置することによって、各LED素子11からの光を略円形の領域に照射させることができ、光のムラを低減することができる。
(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIGS. In the first embodiment, the vertical and horizontal emission distributions of the LED elements 11 are staggered with respect to the LED elements 11 arranged adjacent to each other so that the light from the LED elements 11 is irradiated to a substantially circular region as a whole. In this embodiment, as shown in FIG. 8A, each LED element 11 is arranged so that the short width direction of the light emission distribution of each LED element 11 is arranged on the radiation. As shown in FIG. 8B, each LED element 11 is arranged so that the longitudinal direction of the light emission distribution of each LED element 11 is arranged on the radiation, and either the short width direction or the longitudinal direction of the light emission distribution is determined. By disposing each LED element 11 so as to be disposed in a radial pattern, light from each LED element 11 can be irradiated onto a substantially circular region, and light unevenness can be reduced.
(実施形態3)
本発明の実施形態3を図9(a)(b)を参照して説明する。本実施形態では、実施形態1の照明器具において、LED素子11としてその形状が略直方体状であって、その発光分布が略長方形となるような素子を用いており、複数のLED素子11からの光が全体として略円形の領域に照射されるように、各LED素子11の配置を決定している。尚、LED素子11の配置以外は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIGS. 9 (a) and 9 (b). In the present embodiment, in the lighting fixture of the first embodiment, as the LED element 11, an element having a substantially rectangular parallelepiped shape and having a light emission distribution that is substantially rectangular is used. The arrangement of the LED elements 11 is determined so that the light is irradiated to a substantially circular region as a whole. In addition, since it is the same as that of Embodiment 1 except arrangement | positioning of the LED element 11, the same code | symbol is attached | subjected to the same component and illustration and description are abbreviate | omitted.
本実施形態では、図9(a)に示すように複数のLED素子11を基板10の楕円形の領域D内に配置しており、各LED素子11の長手方向が領域Dの長径方向と略平行になるように各LED素子11を配置している。ここで、各LED素子11からの光はそれぞれ矩形の領域に照射されるので、特殊なレンズやフィルタを用いることなく、図9(b)に示すように複数のLED素子11からの光を全体として円形の領域Bに照射させることができる。   In the present embodiment, as shown in FIG. 9A, the plurality of LED elements 11 are arranged in the elliptical region D of the substrate 10, and the longitudinal direction of each LED element 11 is substantially the same as the major axis direction of the region D. Each LED element 11 is arrange | positioned so that it may become parallel. Here, since the light from each LED element 11 is irradiated to the rectangular area, the light from the plurality of LED elements 11 is entirely shown in FIG. 9B without using a special lens or filter. As shown in FIG.
(実施形態4)
本発明の実施形態4を図10を参照して説明する。実施形態1の照明器具では、複数のLED素子11を1枚の基板10に実装しているが、本実施形態ではLED素子11が実装される基板を複数枚(例えば2枚)に分割して、複数枚(例えば2枚)の基板10a,10bにそれぞれLED素子11を実装している。一方、レンズ体20には主部21の上面略中央から上方に突出するリブ21bを一体に形成しており、このリブ21bによって主部21と側壁22とで囲まれる空間が2つの収納空間24a,24bに分割され、各収納空間24a,24b内に上述した基板10a,10bをそれぞれ納装している。また、主部21の下面には、各収納空間24a,24bに対応する部位に、それぞれ基板10a,10bに実装されたLED素子11の配光を制御するフレネルレンズよりなるレンズ部23,23を設けてある。尚、基板10a,10b及びレンズ体20以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIG. In the lighting fixture of the first embodiment, a plurality of LED elements 11 are mounted on a single substrate 10, but in this embodiment, the substrate on which the LED elements 11 are mounted is divided into a plurality of (for example, two). The LED elements 11 are mounted on a plurality of (for example, two) substrates 10a and 10b, respectively. On the other hand, the lens body 20 is integrally formed with a rib 21b that protrudes upward from substantially the center of the upper surface of the main portion 21, and a space surrounded by the main portion 21 and the side wall 22 by the rib 21b is two storage spaces 24a. 24b, and the above-described substrates 10a and 10b are placed in the storage spaces 24a and 24b, respectively. Further, on the lower surface of the main portion 21, lens portions 23 and 23 made of Fresnel lenses for controlling the light distribution of the LED elements 11 mounted on the substrates 10a and 10b are respectively provided in portions corresponding to the storage spaces 24a and 24b. It is provided. Since the configuration other than the substrates 10a and 10b and the lens body 20 is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
このように、本実施形態では2枚の基板10a,10bにそれぞれ複数のLED素子11を実装し、各基板10a,10bに実装された複数のLED素子11に対してレンズ部23を設け、レンズ部23によりLED素子11からの光の配光を制御しており、複数のLED素子11の配光を1つのレンズ部23で制御することによって、全体として照射面の照度を均一にしたり、照射範囲の調整を行うことができる。また、各LED素子11の配光を制御するレンズ体20がLED素子11と別体に設けられているので、レンズ体20を容易に交換することができ、また配光のパターンを変更したい場合にはレンズ体20を交換することによって容易に対応できるから、配光制御の自由度が高いという利点がある。   As described above, in the present embodiment, the plurality of LED elements 11 are mounted on the two substrates 10a and 10b, and the lens portions 23 are provided for the plurality of LED elements 11 mounted on the substrates 10a and 10b. The light distribution from the LED element 11 is controlled by the unit 23, and the light distribution of the plurality of LED elements 11 is controlled by one lens unit 23, so that the illuminance on the irradiation surface as a whole is uniformed or irradiated. Range adjustments can be made. Moreover, since the lens body 20 for controlling the light distribution of each LED element 11 is provided separately from the LED element 11, the lens body 20 can be easily replaced, and the light distribution pattern is to be changed. Since it can be easily handled by exchanging the lens body 20, there is an advantage that the degree of freedom of light distribution control is high.
ところで、本実施形態では複数枚(2枚)の基板10a,10b毎にレンズ部23を設けているが、図11に示すように、複数枚(2枚)の基板10a,10bに設けたLED素子11に対して、凸レンズ形状のレンズ部23を1つ設け、このレンズ部23によって各基板10a,10bに設けたLED素子11の配光を制御するようにしても良い。   By the way, in this embodiment, although the lens part 23 is provided for each of the plurality (two) of substrates 10a and 10b, as shown in FIG. 11, the LEDs provided on the plurality of (two) substrates 10a and 10b. One lens portion 23 having a convex lens shape may be provided for the element 11, and the light distribution of the LED elements 11 provided on the substrates 10 a and 10 b may be controlled by the lens portion 23.
また、本実施形態では複数枚(2枚)の基板10a,10bをLED素子11の光軸と直交する面内に並べて配置しているが、図12に示すように、レンズ体20の主部21と側壁22とで囲まれる空間24内に、それぞれ複数のLED素子11が実装される複数枚(例えば2枚)の基板10a,10bを前後方向に並べて配設しても良い。ここで、レンズ体20の主部21には、各基板10a,10bに実装されたLED素子11からの光の配光を制御する凸レンズ形状のレンズ部23が1つ設けられており、1個のレンズ部23により複数のLED素子11の配光を纏めて制御している。尚、後方の基板10bとレンズ部23との間に配置された基板10aには、基板10bに実装されたLED素子11と対向する部位に窓孔13が形成されており、基板10bに実装されたLED素子11からの発光は、基板10aに設けた窓孔13を通してレンズ部23に入射するようになっている。   In the present embodiment, a plurality (two) of substrates 10a and 10b are arranged in a plane perpendicular to the optical axis of the LED element 11, but as shown in FIG. A plurality of (for example, two) substrates 10 a and 10 b on which a plurality of LED elements 11 are mounted may be arranged in the front-rear direction in a space 24 surrounded by 21 and the side wall 22. Here, the main portion 21 of the lens body 20 is provided with one convex lens-shaped lens portion 23 for controlling the light distribution from the LED elements 11 mounted on the substrates 10a and 10b. The light distribution of the plurality of LED elements 11 is collectively controlled by the lens unit 23. Note that a window hole 13 is formed in a portion facing the LED element 11 mounted on the substrate 10b in the substrate 10a disposed between the rear substrate 10b and the lens portion 23, and is mounted on the substrate 10b. The light emitted from the LED element 11 enters the lens portion 23 through the window hole 13 provided in the substrate 10a.
(実施形態5)
本発明の実施形態5を図13を参照して説明する。実施形態1又は4の照明器具では、複数のLED素子11の配光を制御する複数のレンズ部23を一体に形成しているが、本実施形態では、各LED素子11の配光をそれぞれ制御するレンズ体20,30を複数設けている。尚、レンズ体20,30以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 5)
Embodiment 5 of the present invention will be described with reference to FIG. In the lighting fixture of Embodiment 1 or 4, the plurality of lens portions 23 that control the light distribution of the plurality of LED elements 11 are integrally formed. In this embodiment, the light distribution of each LED element 11 is controlled. A plurality of lens bodies 20 and 30 are provided. Since the configuration other than the lens bodies 20 and 30 is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
本実施形態では、実施形態1で説明した照明器具において、複数のLED素子11の内の一つを覆うようにして当該LED素子11の配光を制御するフレネルレンズよりなるレンズ部31を備えたレンズ体30を基板10の前面に2個取り付けている。また、レンズ体20の主部21には基板10に実装された複数のLED素子11の配光を制御する凸レンズ形状のレンズ部23を1個設けている。而して、本実施形態ではレンズ体30に設けたレンズ部31により対応するLED素子11の配光を個別に制御するとともに、レンズ体20に設けたレンズ部23により全体のLED素子11の配光を制御しており、全体として照射面の照度を均一にしたり、照射範囲の調整を行うことができる。ここで、各LED素子11の配光を制御するレンズ体20,30はLED素子11と別体に設けられているので、レンズ体20,30を容易に交換することができ、また配光のパターンを変更したい場合にはレンズ体20,30を交換することによって容易に対応できるから、配光制御の自由度が高いという利点がある。   In the present embodiment, the lighting device described in the first embodiment includes a lens unit 31 formed of a Fresnel lens that controls light distribution of the LED element 11 so as to cover one of the plurality of LED elements 11. Two lens bodies 30 are attached to the front surface of the substrate 10. The main portion 21 of the lens body 20 is provided with one convex lens-shaped lens portion 23 that controls the light distribution of the plurality of LED elements 11 mounted on the substrate 10. Thus, in this embodiment, the light distribution of the corresponding LED element 11 is individually controlled by the lens portion 31 provided in the lens body 30 and the entire LED element 11 is arranged by the lens portion 23 provided in the lens body 20. The light is controlled, and the illuminance on the irradiation surface can be made uniform or the irradiation range can be adjusted as a whole. Here, since the lens bodies 20 and 30 for controlling the light distribution of the LED elements 11 are provided separately from the LED elements 11, the lens bodies 20 and 30 can be easily replaced, and the light distribution When the pattern is desired to be changed, it can be easily handled by exchanging the lens bodies 20 and 30. Therefore, there is an advantage that the degree of freedom of light distribution control is high.
(実施形態6)
本実施形態の実施形態6を図14を参照して説明する。本実施形態では、実施形態1の照明器具において、図14に示すようにレンズ体20に設けたレンズ部23が、各LED素子11からの光を、所定の照射距離の領域に集光させている。尚、レンズ部23の配光パターン以外は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 6)
A sixth embodiment of the present embodiment will be described with reference to FIG. In the present embodiment, in the lighting fixture of the first embodiment, as shown in FIG. 14, the lens unit 23 provided on the lens body 20 collects the light from each LED element 11 in a region of a predetermined irradiation distance. Yes. In addition, since it is the same as that of Embodiment 1 except the light distribution pattern of the lens part 23, the same code | symbol is attached | subjected to the same component and illustration and description are abbreviate | omitted.
本実施形態の照明器具では、各LED素子11に対して当該LED素子11の配光を個別に制御するレンズ部23を1つ設けており、LED素子11とレンズ部23とが1:1で対応しているため、各レンズ部23により対応するLED素子11の配光を制御して、複数のLED素子11からの光を1箇所に集光させることができる。   In the lighting fixture of this embodiment, one lens part 23 which individually controls the light distribution of the LED element 11 is provided for each LED element 11, and the LED element 11 and the lens part 23 are 1: 1. Since it respond | corresponds, the light distribution of the LED element 11 which respond | corresponds by each lens part 23 can be controlled, and the light from several LED element 11 can be condensed at one place.
ここで、図15に示すように、レンズ部23によって各LED素子11からの光が集光される領域にレンズ或いは偏向シートよりなる配光制御部材(配光制御部)25を配置しても良く、レンズ部23によって1箇所に集光された光の配光を配光制御部材25によってさらに制御し、所望の領域に照射させることができる。   Here, as shown in FIG. 15, a light distribution control member (light distribution control unit) 25 made of a lens or a deflection sheet may be arranged in a region where the light from each LED element 11 is collected by the lens unit 23. The light distribution of the light condensed at one place by the lens unit 23 can be further controlled by the light distribution control member 25 to irradiate a desired region.
また、本実施形態では単色のLED素子11を用いる場合について説明したが、図16に示すように赤色のLED素子11と、緑色のLED素子11と、青色のLED素子11とを基板10に実装し、各色のLED素子11,11,11からの光をレンズ部23により1箇所に集光して混光するようにしても良く、点灯回路側で各LED素子11の光出力を変化させることによって、色温度を調整して、調光することができる。また、RGB以外でも多色のLED素子を組み合わせて混光することにより、単体の発光ダイオードでは実現されていない色の光を照射させることができ、また同色系でも色管理の異なるものを混光させることによって、中間色にしたり色のばらつきを低減することができる。 In the present embodiment, the case where the single-color LED element 11 is used has been described. However, as shown in FIG. 16, the red LED element 11 R , the green LED element 11 G, and the blue LED element 11 B are provided on the substrate. 10, the light from the LED elements 11 R , 11 G , 11 B of each color may be condensed at one place by the lens unit 23 and mixed, and the LED elements 11 of the LED circuit 11 may be mixed on the lighting circuit side. By changing the light output, the color temperature can be adjusted to adjust the light. In addition to RGB, by combining and mixing multiple color LED elements, it is possible to irradiate light of a color that is not realized with a single light emitting diode, and to mix light with different color management even in the same color system By doing so, it is possible to change to an intermediate color or to reduce color variation.
(実施形態7)
本発明の実施形態7を図17を参照して説明する。実施形態1の照明器具では、複数のレンズ部23を同一の平面上に形成するとともに、各レンズ部23から照射される光の方向を略平行に制御しているが、本実施形態では各レンズ部23により、レンズ部23を介して外部に照射されるLED素子11の光の方向を、外側に位置するLED素子11ほど光の方向が外側を向くように制御している。尚、レンズ部23による配光の方向以外は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、その説明を省略する。
(Embodiment 7)
A seventh embodiment of the present invention will be described with reference to FIG. In the lighting fixture of the first embodiment, the plurality of lens portions 23 are formed on the same plane and the direction of light emitted from each lens portion 23 is controlled to be substantially parallel. The unit 23 controls the direction of the light of the LED element 11 irradiated to the outside via the lens unit 23 so that the light direction of the LED element 11 positioned on the outer side is directed outward. In addition, since it is the same as that of Embodiment 1 except the direction of the light distribution by the lens part 23, the same code | symbol is attached | subjected to the same component and the description is abbreviate | omitted.
この照明器具では、レンズ体20に設けたレンズ部23の形状によって光の方向を変化させており、レンズ体20として樹脂成形品を用いる場合は、レンズ部23の形状を所望の形状に成型することによって、光の方向を所望の方向に制御することができ、LED素子11を傾斜させて基板10に実装する場合に比べて、配光を容易に制御することができる。また、本実施形態ではレンズ部23を介して外部に照射されるLED素子11の光の方向を、外側に位置するLED素子11ほど光の方向が外側を向くように制御しているので、各レンズ部23から照射される光の方向を略平行にした場合に比べて、より広い範囲に均一に光を照射させることができる。   In this lighting fixture, the direction of light is changed depending on the shape of the lens portion 23 provided on the lens body 20, and when the resin molded product is used as the lens body 20, the shape of the lens portion 23 is molded into a desired shape. Thus, the direction of light can be controlled in a desired direction, and the light distribution can be easily controlled as compared with the case where the LED element 11 is inclined and mounted on the substrate 10. Further, in this embodiment, the direction of the light of the LED element 11 irradiated to the outside via the lens unit 23 is controlled so that the direction of the light is directed outward as the LED element 11 is located on the outer side. Compared with the case where the direction of the light irradiated from the lens part 23 is made substantially parallel, light can be uniformly irradiated over a wider range.
(実施形態8)
本発明の実施形態8を図18を参照して説明する。本実施形態では、実施形態1で説明した照明器具において、各レンズ部23の前方に、各レンズ部23により集光された光の配光をさらに制御するレンズ又は偏向シートよりなる配光制御部材25を配置している。尚、配光制御部材25以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 8)
An eighth embodiment of the present invention will be described with reference to FIG. In the present embodiment, in the lighting fixture described in the first embodiment, a light distribution control member including a lens or a deflection sheet that further controls the light distribution of the light collected by each lens unit 23 in front of each lens unit 23. 25 is arranged. Since the configuration other than the light distribution control member 25 is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
上述のように本実施形態の照明器具では、各レンズ部23の前方に各レンズ部23により集光された光の配光を制御する配光制御部材25を配置しており、レンズ部23で対応するLED素子11の光を集光した後、さらに配光制御部材25で配光を制御しているので、照射面に対してさらに均一に光を照射させたり、照射面の形状を異なる形状(楕円や長円)に偏向させることができる。   As described above, in the lighting fixture of the present embodiment, the light distribution control member 25 that controls the light distribution of the light collected by each lens unit 23 is arranged in front of each lens unit 23. Since the light distribution is controlled by the light distribution control member 25 after the light from the corresponding LED element 11 is condensed, the irradiation surface is irradiated with light more uniformly, or the irradiation surface has a different shape. It can be deflected (ellipse or ellipse).
(実施形態9)
本発明の実施形態9を図19及び図20を参照して説明する。本実施形態では、実施形態1の照明器具において、レンズ体20の主部21下面におけるレンズ部23以外の部位(図20の斜線部)にしぼ加工を施して、光拡散部としてのしぼ26を形成している。尚、しぼ26を設けた点以外は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 9)
Embodiment 9 of the present invention will be described with reference to FIGS. In the present embodiment, in the luminaire of the first embodiment, a portion other than the lens portion 23 (shaded portion in FIG. 20) on the lower surface of the main portion 21 of the lens body 20 is subjected to a wetting process so that the wrinkles 26 as light diffusion portions are formed. Forming. In addition, since it is the same as that of Embodiment 1 except the point which provided the grain 26, the same code | symbol is attached | subjected to the same component and illustration and description are abbreviate | omitted.
レンズ体20は透光性を有する合成樹脂により形成されているので、主部21の下面におけるレンズ部23以外の部位を光が透過し、この光によってグレアが生じる虞がある。そこで本実施形態では、レンズ体20の主部21下面におけるレンズ部23以外の部位にしぼ26を形成しており、レンズ部23によって集光されなかったLED素子11からの光はしぼ26によって拡散されるから、この光が外部に透過することはなく、レンズ部23以外の部位から光が照射されるのを防止して、グレアを防止することができ、且つ、照射面の光のむらを少なくできる。また、しぼ26を形成することにより、レンズ部23以外の部位を通して外部から基板10が見えるのを防止し、外観の見栄えを良くできる。   Since the lens body 20 is formed of a synthetic resin having translucency, light may pass through a portion other than the lens portion 23 on the lower surface of the main portion 21, and glare may occur due to this light. Therefore, in the present embodiment, the recess 26 is formed in a portion other than the lens portion 23 on the lower surface of the main portion 21 of the lens body 20, and the light from the LED element 11 that is not condensed by the lens portion 23 is diffused by the recess 26. Therefore, this light is not transmitted to the outside, it is possible to prevent light from being irradiated from a portion other than the lens portion 23, to prevent glare, and to reduce unevenness of light on the irradiation surface. it can. In addition, by forming the grain 26, it is possible to prevent the substrate 10 from being seen from the outside through a portion other than the lens portion 23, and to improve the appearance of the appearance.
尚、本実施形態では主部21の下面におけるレンズ部23以外の部位にしぼ26を設けているが、図21に示すように、主部21の下面及び上面におけるレンズ部23以外の部位にしぼ加工を施して、しぼ26,27を形成しても良く、上述と同様、レンズ部23以外の部位から光が照射されるのを防止して、グレアを低減することができる。   In the present embodiment, the recesses 26 are provided in the portions other than the lens portion 23 on the lower surface of the main portion 21. However, the recesses are provided in the portions other than the lens portion 23 on the lower and upper surfaces of the main portion 21 as shown in FIG. The wrinkles 26 and 27 may be formed by processing, and the glare can be reduced by preventing light from being irradiated from a portion other than the lens portion 23 as described above.
また、本実施形態では光拡散部として、主部21の下面又は上面におけるレンズ部23以外の部位にしぼ26,27を形成し、しぼ26,27によってレンズ部23に集光されなかった光が外部に透過するのを防止しているが、しぼ26,27を形成する代わりに、レンズ部23に集光されなかった光を屈折して拡散させるプリズムを設けても良く、上述と同様の効果を得ることができる。   Further, in this embodiment, as the light diffusing portion, the concave portions 26 and 27 are formed in a portion other than the lens portion 23 on the lower surface or the upper surface of the main portion 21, and the light that is not condensed on the lens portion 23 by the concave portions 26 and 27. Although it prevents the light from being transmitted to the outside, a prism that refracts and diffuses the light that has not been condensed on the lens unit 23 may be provided instead of forming the wrinkles 26 and 27. Can be obtained.
(実施形態10)
本発明の実施形態10を図22を参照して説明する。本実施形態では、実施形態1の照明器具において、レンズ体20の主部21上面におけるレンズ部23以外の部位に上方に突出して、先端が基板10と当接する光屈折部としてのリブ21cをレンズ体20と一体に設けている。尚、リブ21cを設けた点以外は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 10)
A tenth embodiment of the present invention will be described with reference to FIG. In the present embodiment, in the lighting fixture of the first embodiment, the rib 21c as a light refracting portion that protrudes upward to a portion other than the lens portion 23 on the upper surface of the main portion 21 of the lens body 20 and whose tip abuts against the substrate 10 is used as the lens. It is provided integrally with the body 20. In addition, since it is the same as that of Embodiment 1 except the point which provided the rib 21c, the same code | symbol is attached | subjected to the same component and illustration and description are abbreviate | omitted.
ところで、レンズ体20は透光性を有する合成樹脂により形成されているので、実施形態1の照明器具では主部21の下面におけるレンズ部23以外の部位を光が透過し、この光によってグレアが生じる虞がある。そこで本実施形態では、レンズ体20の主部21上面におけるレンズ部23以外の部位に上方に突出して、先端が基板10と当接するリブ21cをレンズ体20と一体に設けており、各LED素子11からの光の内、レンズ部23によって集光されない光(図22中のF)は、レンズ部23の間に位置するリブ21cに入射し、照射方向とは異なる方向に屈折されるから、レンズ部23以外の部位から光が照射されるのを防止して、グレアを防止することができ、且つ、照射面の光のむらを少なくできる。また、リブ21cを形成することにより、レンズ部23以外の部位を通して外部から基板10が見えるのを防止し、外観の見栄えを良くできる。   By the way, since the lens body 20 is formed of a synthetic resin having translucency, in the lighting fixture of Embodiment 1, light is transmitted through a portion other than the lens portion 23 on the lower surface of the main portion 21, and glare is generated by this light. May occur. Therefore, in the present embodiment, a rib 21c that protrudes upward from a portion other than the lens portion 23 on the upper surface of the main portion 21 of the lens body 20 and has a tip abutting against the substrate 10 is provided integrally with the lens body 20, and each LED element. 11, the light not collected by the lens unit 23 (F in FIG. 22) is incident on the ribs 21 c located between the lens units 23 and is refracted in a direction different from the irradiation direction. It is possible to prevent light from being irradiated from a portion other than the lens unit 23, to prevent glare, and to reduce unevenness of light on the irradiation surface. Further, by forming the rib 21c, it is possible to prevent the substrate 10 from being seen from the outside through a portion other than the lens portion 23, and to improve the appearance of the appearance.
(実施形態11)
本発明の実施形態11を図23及び図24を参照して説明する。本実施形態では、実施形態1の照明器具において、レンズ体20の主部21上面に、LED素子11からの光の色温度を変換する光学フィルタ28を取り付けている。尚、光学フィルタ28以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 11)
An eleventh embodiment of the present invention will be described with reference to FIGS. In this embodiment, in the lighting fixture of Embodiment 1, an optical filter 28 that converts the color temperature of light from the LED element 11 is attached to the upper surface of the main portion 21 of the lens body 20. Since the configuration other than the optical filter 28 is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
光学フィルタ28は略円板状に形成され、外周部に切欠28a,28aが形成されている。一方、レンズ体20の側壁22には切欠28a,28aに対応する部位に切欠28a,28a内に挿入される突片22b,22bが突設されている。而して、光学フィルタ28をレンズ体20に取り付ける際は、光学フィルタ28の切欠28aとレンズ体20の突片22bとの位置を合わせて、光学フィルタ28をレンズ体20内に挿入した後、光学フィルタ28を回転させると、突片22bと光学フィルタ28の外周縁とが係止して、光学フィルタ28の浮き上がりが防止される。一方、光学フィルタ28を取り外す際は、光学フィルタ28の切欠28aとレンズ体20の突片22bの位置が一致するまで光学フィルタ28を回転させると、突片22bと光学フィルタ28の外周縁との係止状態が外れるので、光学フィルタ28をレンズ体20から容易に取り外すことができ、光学フィルタ28の交換作業を容易に行うことができる。   The optical filter 28 is formed in a substantially disk shape, and notches 28a and 28a are formed in the outer peripheral portion. On the other hand, on the side wall 22 of the lens body 20, projecting pieces 22b and 22b to be inserted into the notches 28a and 28a are provided at positions corresponding to the notches 28a and 28a. Thus, when the optical filter 28 is attached to the lens body 20, the positions of the notch 28 a of the optical filter 28 and the protrusion 22 b of the lens body 20 are aligned, and the optical filter 28 is inserted into the lens body 20. When the optical filter 28 is rotated, the protruding piece 22b and the outer peripheral edge of the optical filter 28 are locked, and the optical filter 28 is prevented from being lifted. On the other hand, when removing the optical filter 28, if the optical filter 28 is rotated until the notch 28a of the optical filter 28 and the position of the protruding piece 22b of the lens body 20 coincide with each other, the protruding piece 22b and the outer peripheral edge of the optical filter 28 are separated. Since the locked state is released, the optical filter 28 can be easily detached from the lens body 20, and the optical filter 28 can be easily replaced.
このように、本実施形態の照明器具ではLED素子11とレンズ部23との間に光学フィルタ28を配置しているので、光学フィルタ28によってLED素子11からの光の色温度を変換させることができる。   Thus, since the optical filter 28 is disposed between the LED element 11 and the lens unit 23 in the lighting fixture of the present embodiment, the optical filter 28 can convert the color temperature of light from the LED element 11. it can.
尚、本実施形態では光学フィルタ28として、光の色温度を変換する機能を有する色温度変換フィルタを用いているが、このような色温度変換フィルタの代わりに、所定の波長域の光をカットする機能を有するフィルタをレンズ体20に取り付けても良く、ある波長域の光をカットすることによって、同色のLED素子11の光のばらつきを低減することができる。   In this embodiment, a color temperature conversion filter having a function of converting the color temperature of light is used as the optical filter 28. Instead of such a color temperature conversion filter, light in a predetermined wavelength region is cut. A filter having a function to perform this function may be attached to the lens body 20, and by cutting light in a certain wavelength region, variation in light of the LED elements 11 of the same color can be reduced.
また、本実施形態の照明器具において、LED素子11として青色の発光ダイオードを用いると共に、光学フィルタ28の代わりに、青色の発光ダイオードの光によって励起され白色光を発生する蛍光体層(図示せず)を設けても良く、白色発光ダイオードの照明器具として使用できる。尚、蛍光体層はレンズ体20に蛍光体を塗布したり、充填するなどして形成すれば良い。   Moreover, in the lighting fixture of this embodiment, while using a blue light emitting diode as the LED element 11, the fluorescent substance layer (not shown) which generate | occur | produces white light excited by the light of a blue light emitting diode instead of the optical filter 28. ) And may be used as a lighting device for white light emitting diodes. The phosphor layer may be formed by applying or filling the lens body 20 with a phosphor.
(実施形態12)
本発明の実施形態12を図25及び図26を参照して説明する。本実施形態では、実施形態1の照明器具において、レンズ体20の主部21上面に、各LED素子11を個別に覆うようにして反射部材たる筒体29を取り付けている。尚、筒体29以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
Embodiment 12
A twelfth embodiment of the present invention will be described with reference to FIGS. In the present embodiment, in the lighting fixture of the first embodiment, a cylindrical body 29 as a reflecting member is attached to the upper surface of the main portion 21 of the lens body 20 so as to individually cover each LED element 11. Since the configuration other than the cylindrical body 29 is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
筒体29は反射係数の高い材料により筒状に形成され、主部21の上面に形成された溝(図示せず)内に一端部を嵌合させることによって、レンズ体20に位置決めされる。そして、基板10をレンズ体20に取り付けると、筒体29の他端部が基板10と当接し、筒体29が基板10とレンズ体20との間に保持される。この時、各筒体29内にLED素子11が配置され、各LED素子11の周りが筒体29によって覆われるので、レンズ部23によって集光されなかったLED素子11からの光は筒体29の内周面によって反射され、レンズ部23以外の部位から光が照射されるのを防止して、グレアを防止することができ、且つ、照射面の光のむらを少なくできる。   The cylindrical body 29 is formed in a cylindrical shape with a material having a high reflection coefficient, and is positioned on the lens body 20 by fitting one end portion into a groove (not shown) formed on the upper surface of the main portion 21. When the substrate 10 is attached to the lens body 20, the other end of the cylindrical body 29 comes into contact with the substrate 10, and the cylindrical body 29 is held between the substrate 10 and the lens body 20. At this time, since the LED elements 11 are arranged in the respective cylinders 29 and the periphery of each LED element 11 is covered with the cylinders 29, the light from the LED elements 11 that is not condensed by the lens unit 23 is the cylinders 29. It is reflected by the inner peripheral surface of the lens, and it is possible to prevent light from being irradiated from a portion other than the lens portion 23, to prevent glare, and to reduce unevenness of light on the irradiation surface.
尚、筒体29の材料としては反射係数の高い材料を用いるのが好ましく、また白色の材料により形成したり、筒体29の内周面に鏡面加工を施すことによって反射係数を高くでき、レンズ部23によって集光されなかったLED素子11からの光を筒体29の内周面によって効率良く反射させ、レンズ部23以外の部位から光が照射されるのを防止することができる。また、筒体29の大きさはレンズ部23の外形よりも大きい寸法に形成するのが好ましく、レンズ部23に集光される光が筒体29の内周面によって反射されることはなく、レンズ部23以外の部位から光が照射されるのを防止できる。   Note that it is preferable to use a material having a high reflection coefficient as the material of the cylindrical body 29. Further, it is possible to increase the reflection coefficient by forming the cylindrical body 29 by using a white material or by applying a mirror finish to the inner peripheral surface of the cylindrical body 29. Light from the LED element 11 that is not collected by the portion 23 can be efficiently reflected by the inner peripheral surface of the cylindrical body 29, and light can be prevented from being irradiated from portions other than the lens portion 23. In addition, it is preferable that the size of the cylindrical body 29 is larger than the outer shape of the lens portion 23, and the light collected on the lens portion 23 is not reflected by the inner peripheral surface of the cylindrical body 29. It is possible to prevent light from being irradiated from a part other than the lens unit 23.
(実施形態13)
本発明の実施形態13を図27及び図28を参照して説明する。本実施形態では、実施形態1の照明器具において、レンズ体20の主部21と側壁22とで囲まれる凹所内に、光を透過しない合成樹脂により略円板状の反射部材32を2色成形により形成しており、反射部材32におけるLED素子11とレンズ部23との間の部位に反射部材32を貫通する貫通孔32aを形成している。尚、反射部材32以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 13)
A thirteenth embodiment of the present invention will be described with reference to FIGS. In the present embodiment, in the lighting fixture of the first embodiment, a substantially disc-shaped reflecting member 32 is molded in two colors with a synthetic resin that does not transmit light in a recess surrounded by the main portion 21 and the side wall 22 of the lens body 20. The through-hole 32a which penetrates the reflection member 32 is formed in the part between the LED element 11 and the lens part 23 in the reflection member 32. In addition, since structures other than the reflective member 32 are the same as that of Embodiment 1, the same code | symbol is attached | subjected to the same component and illustration and description are abbreviate | omitted.
上述のように反射部材32は、光を透過しない材料により略円板状に形成され、その厚み寸法は基板10とレンズ体20の主部21との間の距離と略同じ寸法に設定されているので、レンズ体20と基板10とを結合すると、LED素子11が貫通孔32a内に配置され、LED素子11の周りが貫通孔32aの内周面によって囲まれる。したがって、レンズ部23によって集光されなかったLED素子11からの光は貫通孔32aの内周面で反射され、レンズ部23以外の部位から光が照射されることはないから、グレアを防止することができ、且つ、照射面の光のむらを少なくできる。   As described above, the reflecting member 32 is formed in a substantially disc shape by a material that does not transmit light, and the thickness dimension thereof is set to be approximately the same as the distance between the substrate 10 and the main portion 21 of the lens body 20. Therefore, when the lens body 20 and the substrate 10 are coupled, the LED element 11 is disposed in the through hole 32a, and the LED element 11 is surrounded by the inner peripheral surface of the through hole 32a. Therefore, the light from the LED element 11 that has not been condensed by the lens unit 23 is reflected by the inner peripheral surface of the through-hole 32a and is not irradiated from any part other than the lens unit 23, thus preventing glare. And unevenness of light on the irradiated surface can be reduced.
尚、本実施形態では透光性を有する材料により形成されるレンズ体20と、光を透過しない材料により形成される反射部材32とを2色成形により形成しているが、反射部材32をレンズ体20と別体に形成し、反射部材32をレンズ体20内に嵌合するようにしても良い。また、反射部材32を形成する材料としては反射係数の高い材料を用いるのが好ましく、白色の材料により形成したり、貫通孔32aの内周面を鏡面とすることによって反射係数を高くし、レンズ部23によって集光されなかったLED素子11からの光を貫通孔32aの内周面によって効率良く反射し、レンズ部23以外の部位から光が照射されるのを防止することができる。   In the present embodiment, the lens body 20 formed of a light-transmitting material and the reflecting member 32 formed of a material that does not transmit light are formed by two-color molding. It may be formed separately from the body 20 and the reflecting member 32 may be fitted into the lens body 20. In addition, it is preferable to use a material having a high reflection coefficient as a material for forming the reflection member 32. The reflection member 32 is formed of a white material, or the reflection coefficient is increased by making the inner peripheral surface of the through hole 32a a mirror surface. Light from the LED element 11 that has not been collected by the portion 23 can be efficiently reflected by the inner peripheral surface of the through-hole 32a, and light from portions other than the lens portion 23 can be prevented from being irradiated.
(実施形態14)
本発明の実施形態14を図29を参照して説明する。実施形態1の照明器具では、レンズ体20を略円板状の主部21と、主部21の全周縁から上方に突出する側壁22とを一体に形成した有底円筒状としてあるが、本実施形態では、レンズ体26を透光性を有する材料により厚肉の円板状に形成してある。そして、レンズ体26の一方の面に基板10が嵌合する凹所20aを形成するとともに、反対側の面における各LED素子11に対応する部位にレンズ部23をそれぞれ形成してある。そして、凹所20aの底面における各LED素子11に対応する部位に、深さ寸法が凹所20aの底面とレンズ体20の反対側の面との間の距離よりも浅い丸穴20bをそれぞれ形成し、各丸穴20bの内周面に白色の塗料などを塗布して反射面20cを形成している。尚、レンズ体20以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 14)
A fourteenth embodiment of the present invention will be described with reference to FIG. In the lighting fixture of the first embodiment, the lens body 20 has a substantially disc-shaped main portion 21 and a bottomed cylindrical shape integrally formed with a side wall 22 protruding upward from the entire periphery of the main portion 21. In the embodiment, the lens body 26 is formed in a thick disk shape from a light-transmitting material. And while forming the recess 20a in which the board | substrate 10 fits in one surface of the lens body 26, the lens part 23 is each formed in the site | part corresponding to each LED element 11 in the opposite surface. And the round hole 20b whose depth dimension is shallower than the distance between the bottom face of the recess 20a and the surface on the opposite side of the lens body 20 is formed in the part corresponding to each LED element 11 in the bottom face of the recess 20a. The reflective surface 20c is formed by applying a white paint or the like to the inner peripheral surface of each round hole 20b. Since the configuration other than the lens body 20 is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
而して、基板10とレンズ体20とを結合すると、各LED素子11が丸穴20b内に配置され、LED素子11の周りが丸穴20bの内周面によって囲まれるので、レンズ部23によって集光されなかったLED素子11からの光は丸穴20bの内周面に形成された反射面20cで反射され、レンズ部23以外の部位から光が照射されるのを防止して、グレアを防止することができ、且つ、照射面の光のむらを少なくできる。ここに、各丸穴20bの内周面に形成した反射面20cにより、各LED素子11から照射される光の内、レンズ部23に入射する光以外の光を反射して、レンズ部23以外の部位から外部に光が出るのを防止する反射部材が構成される。   Thus, when the substrate 10 and the lens body 20 are coupled, each LED element 11 is disposed in the round hole 20b, and the LED element 11 is surrounded by the inner peripheral surface of the round hole 20b. The light from the LED element 11 that has not been condensed is reflected by the reflecting surface 20c formed on the inner peripheral surface of the round hole 20b, and the light is prevented from being irradiated from a portion other than the lens portion 23. It is possible to prevent the unevenness of light on the irradiated surface. Here, the reflection surface 20c formed on the inner peripheral surface of each round hole 20b reflects light other than the light incident on the lens portion 23 out of the light emitted from each LED element 11, and other than the lens portion 23. A reflection member is configured to prevent light from being emitted from the part.
(実施形態15)
本発明の実施形態15を図30を参照して説明する。本実施形態では、実施形態1の照明器具において、レンズ体20の主部21上面におけるレンズ部23以外の部位に上方に突出して、先端が基板10と当接するリブ21cをレンズ体20と一体に設けるとともに、レンズ体20の側壁22及びリブ21c内に光を透過しない金属のような材料からなる反射部材33をインサート成形している。尚、リブ21c及び反射部材33以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 15)
A fifteenth embodiment of the present invention will be described with reference to FIG. In the present embodiment, in the lighting fixture of the first embodiment, a rib 21c that protrudes upward to a portion other than the lens portion 23 on the upper surface of the main portion 21 of the lens body 20 and whose tip contacts the substrate 10 is integrated with the lens body 20. In addition, the reflecting member 33 made of a material such as a metal that does not transmit light is insert-molded in the side wall 22 and the rib 21c of the lens body 20. Since the configuration other than the rib 21c and the reflecting member 33 is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
ところで、レンズ体20は透光性を有する合成樹脂により形成されているので、実施形態1の照明器具では主部21の下面におけるレンズ部23以外の部位を光が透過し、この光によってグレアが生じる虞がある。   By the way, since the lens body 20 is formed of a synthetic resin having translucency, in the lighting fixture of Embodiment 1, light is transmitted through a portion other than the lens portion 23 on the lower surface of the main portion 21, and glare is generated by this light. May occur.
そこで本実施形態では、レンズ体20の主部21上面におけるレンズ部23以外の部位に上方に突出して、先端が基板10と当接するリブ21cをレンズ体20と一体に設け、このリブ21cとレンズ体20の側壁22とに反射部材33をインサート成形している。したがって、各LED素子11からの光の内、レンズ部23によって集光されない光は、レンズ部23の間に位置するリブ21cやレンズ体20の側壁22に入射して、反射部材33によって反射されるから、LED素子11からの光を効率良くレンズ部23に導くことができ、レンズ部23以外の部位から光が照射されるのを防止して、グレアを防止することができる。また、反射部材33を金属のような熱伝導率の高い材料により形成すれば、基板10に実装されたLED素子11などの電気部品からの発熱が反射部材33によってレンズ体20の前面側に効率良く伝達され、レンズ体20の前面から放熱させることができる。   Therefore, in the present embodiment, a rib 21c that protrudes upward in a portion other than the lens portion 23 on the upper surface of the main portion 21 of the lens body 20 and whose tip abuts against the substrate 10 is provided integrally with the lens body 20, and the rib 21c and the lens A reflection member 33 is insert-molded on the side wall 22 of the body 20. Therefore, of the light from each LED element 11, the light that is not collected by the lens unit 23 is incident on the rib 21 c positioned between the lens units 23 and the side wall 22 of the lens body 20 and is reflected by the reflecting member 33. Therefore, the light from the LED element 11 can be efficiently guided to the lens unit 23, and the light can be prevented from being irradiated from parts other than the lens unit 23, thereby preventing glare. Further, if the reflecting member 33 is formed of a material having a high thermal conductivity such as a metal, the heat generated from the electric components such as the LED elements 11 mounted on the substrate 10 is efficiently transmitted to the front surface side of the lens body 20 by the reflecting member 33. It is transmitted well and can be radiated from the front surface of the lens body 20.
(実施形態16)
本発明の実施形態16を図31及び図32を参照して説明する。本実施形態では、実施形態11の照明器具において、光学フィルタ28をレンズ体20に対して回転自在に取り付けると共に、光学フィルタ28を図31に2点鎖線で示す位置に回転させた状態で各レンズ部23と対向する部位と、上記位置と異なる位置に回転させた状態で各レンズ部23と対向する部位とに、それぞれ異なるフィルタ特性を有する2種類のフィルタ機能部28b,28cを設けている。尚、フィルタ機能部28b,28c以外の構成は実施形態11と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 16)
A sixteenth embodiment of the present invention will be described with reference to FIGS. 31 and 32. FIG. In this embodiment, in the lighting fixture of Embodiment 11, the optical filter 28 is rotatably attached to the lens body 20, and each lens is rotated in a state where the optical filter 28 is rotated to a position indicated by a two-dot chain line in FIG. Two types of filter function units 28b and 28c having different filter characteristics are provided in a part facing the part 23 and a part facing each lens part 23 in a state rotated to a position different from the above position. Since the configuration other than the filter function units 28b and 28c is the same as that of the eleventh embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
上述のように光学フィルタ28には、それぞれ異なるフィルタ特性を有する2種類のフィルタ機能部28b,28cが設けられており、光学フィルタ28をレンズ体20に対して回転させることによって、何れかのフィルタ機能部28b,28cがレンズ部23と対向し、各LED素子11からの光の色温度や周波数域が変換される。また、光学フィルタ28を回転させることによって、各レンズ部23と対向するフィルタ機能部28b,28cが切り替えられるから、フィルタ機能部28b,28cとして、例えば光の色温度を変換する機能や、所定の波長域の光をカットする機能について異なる機能を持たせれば、光学フィルタ28を回転させることによって、照射面に照射される光の色温度や配光を切り替えることができる。   As described above, the optical filter 28 is provided with the two types of filter function units 28b and 28c having different filter characteristics. By rotating the optical filter 28 with respect to the lens body 20, any one of the filters is provided. The functional units 28b and 28c face the lens unit 23, and the color temperature and frequency range of light from each LED element 11 are converted. Further, by rotating the optical filter 28, the filter function units 28b and 28c facing each lens unit 23 are switched. Therefore, as the filter function units 28b and 28c, for example, a function for converting the color temperature of light, If a function different from the function of cutting light in the wavelength band is provided, the color temperature and light distribution of the light irradiated on the irradiation surface can be switched by rotating the optical filter 28.
(実施形態17)
本発明の実施形態17を図33を参照して説明する。実施形態1ではレンズ体20にレンズ部23を1種類だけ設けているが、本実施形態では、レンズ体20を基板10に対して回動自在とし、レンズ体20をそれぞれ異なる位置に回転させた状態で各LED素子11と対向するレンズ体20の部位に、互いに異なる配光パターンを有する2種類のレンズ部23a,23bを設けている。尚、レンズ部23a,23b以外の構成は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 17)
A seventeenth embodiment of the present invention will be described with reference to FIG. In the first embodiment, only one type of lens portion 23 is provided on the lens body 20, but in this embodiment, the lens body 20 is rotatable with respect to the substrate 10 and the lens bodies 20 are rotated to different positions. Two types of lens portions 23a and 23b having different light distribution patterns are provided at the portions of the lens body 20 that face the LED elements 11 in the state. Since the configuration other than the lens portions 23a and 23b is the same as that of the first embodiment, the same components are denoted by the same reference numerals, and illustration and description thereof are omitted.
上述のようにレンズ体20は基板10に対して回動自在に取り付けられており、レンズ体20を基板10に対して所定の角度(本実施形態では例えば45度)だけ回転させることによって、各LED素子11と対向するレンズ部23a,23bの種類を切り替えることができ、配光パターンを切り替えることができる。   As described above, the lens body 20 is rotatably attached to the substrate 10, and each lens body 20 is rotated by a predetermined angle (for example, 45 degrees in this embodiment) with respect to the substrate 10. The type of the lens portions 23a and 23b facing the LED element 11 can be switched, and the light distribution pattern can be switched.
尚、本実施形態ではレンズ部23a,23bをレンズ体20と一体に設けており、レンズ体20を回転させることによって、LED素子11と対向するレンズ部23a,23bの種類を切り替えているが、レンズ部23a,23bが形成された部位をレンズ体20に対して回転自在に設け、レンズ部23a,23bが形成された部位を回転させることによって、LED素子11と対向するレンズ部23a,23bの種類を切り替えるようにしても良い。   In the present embodiment, the lens portions 23a and 23b are provided integrally with the lens body 20, and the type of the lens portions 23a and 23b facing the LED element 11 is switched by rotating the lens body 20. The portions where the lens portions 23 a and 23 b are formed are provided so as to be rotatable with respect to the lens body 20, and the portions where the lens portions 23 a and 23 b are formed are rotated so that the lens portions 23 a and 23 b facing the LED element 11 are rotated. The type may be switched.
また、本実施形態ではLED素子11及びレンズ部23a,23bを同心円上に配置しているが、図34に示すようにレンズ体20’に2種類のレンズ部23a,23bを直線上に配置するとともに、基板10に対してLED素子11を直線上に配置し、レンズ体20’を基板10に対してスライド自在に取り付け、レンズ体20’をスライドさせることによって、LED素子11に対向するレンズ部23a,23bの種類を切り替えて、配光パターンを切り替えるようにしても良い。   In the present embodiment, the LED element 11 and the lens portions 23a and 23b are arranged concentrically. However, as shown in FIG. 34, two types of lens portions 23a and 23b are arranged on a straight line in the lens body 20 ′. At the same time, the LED element 11 is linearly arranged with respect to the substrate 10, the lens body 20 ′ is slidably attached to the substrate 10, and the lens body 20 ′ is slid to slide the lens portion facing the LED element 11. The light distribution pattern may be switched by switching the type of 23a and 23b.
(実施形態18)
本発明の実施形態18を図35を参照して説明する。実施形態1では基板10とレンズ体20との間隔を一定にしているが、本実施形態では、側壁22の内周面にねじ(図示せず)を形成し、レンズ体20を回転させることによって基板10をねじ溝に沿って前後方向(図35中に矢印で示す方向)へ移動させ、基板10とレンズ体20との間の距離を変化させている。尚、基板10とレンズ体20との間の距離を変化させる点以外は実施形態1と同様であるので、同一の構成要素には同一の符号を付して、図示及び説明は省略する。
(Embodiment 18)
An eighteenth embodiment of the present invention will be described with reference to FIG. In the first embodiment, the distance between the substrate 10 and the lens body 20 is constant, but in this embodiment, a screw (not shown) is formed on the inner peripheral surface of the side wall 22 and the lens body 20 is rotated. The board | substrate 10 is moved to the front-back direction (direction shown by the arrow in FIG. 35) along a screw groove, and the distance between the board | substrate 10 and the lens body 20 is changed. In addition, since it is the same as that of Embodiment 1 except the point which changes the distance between the board | substrate 10 and the lens body 20, the same code | symbol is attached | subjected to the same component and illustration and description are abbreviate | omitted.
上述のように本実施形態では基板10とレンズ体20との間の距離を変化させているので、各LED素子11の位置をレンズ部23の焦点に合わせたり、ずらせたりすることによって、配光を変化させることができる。例えばLED素子11の位置をレンズ部23の焦点に合わせると、各レンズ部23により集光された光がくっきりとして、照射面の最大照度を高くすることができ、LED素子11の位置をレンズ部23の焦点からずらすと、照射範囲が広がり、照射範囲内で光のムラが少なく、最大照度の差が少ないように配光することができる。   As described above, since the distance between the substrate 10 and the lens body 20 is changed in the present embodiment, the light distribution is achieved by adjusting the position of each LED element 11 to the focal point of the lens unit 23 or shifting the position. Can be changed. For example, when the position of the LED element 11 is adjusted to the focal point of the lens unit 23, the light condensed by each lens unit 23 is clear, and the maximum illuminance on the irradiation surface can be increased, and the position of the LED element 11 is changed to the lens unit. By shifting from the focal point 23, the irradiation range is widened, light distribution is small within the irradiation range, and light distribution can be performed so that the difference in maximum illuminance is small.
尚、基板10とレンズ体20との間の距離を変化させる手段としては上述の機構以外にも例えばカメラの絞り機構のように、レンズ体20を枠体(図示せず)に係止させ、枠体を回転させることによってレンズ体を前後方向に移動させ、基板10とレンズ体20との間の距離を変化させるようにしても良いし、またレンズ体20は固定とし、基板10を前後方向に移動させるような機構を設けても良い。
As a means for changing the distance between the substrate 10 and the lens body 20, in addition to the above-described mechanism, the lens body 20 is locked to a frame body (not shown) like a diaphragm mechanism of a camera, for example. The lens body may be moved in the front-rear direction by rotating the frame body, and the distance between the substrate 10 and the lens body 20 may be changed, or the lens body 20 may be fixed and the substrate 10 may be moved in the front-rear direction. You may provide the mechanism to move to.
実施形態1の照明器具を示し、(a)は一部省略せる下面図、(b)は一部省略せる断面図である。The lighting fixture of Embodiment 1 is shown, (a) is a bottom view which can be omitted partially, (b) is a sectional view which can be partially omitted. 同上の照明器具を示し、(a)(b)はLED素子の配置を説明する説明図である。The lighting fixture same as the above is shown, (a) (b) is explanatory drawing explaining arrangement | positioning of an LED element. 同上の下側から見た分解斜視図である。It is the disassembled perspective view seen from the lower side same as the above. 同上の上側から見た分解斜視図である。It is the disassembled perspective view seen from the upper side same as the above. 同上の一部省略せる断面図である。It is sectional drawing which can be omitted partially. 同上の別の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be partially omitted which shows another lighting fixture same as the above. 同上のまた別の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be abbreviate | omitted partially showing another lighting fixture same as the above. 実施形態2の照明器具を示し、(a)(b)はLED素子の配置を説明する説明図である。The lighting fixture of Embodiment 2 is shown, (a) (b) is explanatory drawing explaining arrangement | positioning of an LED element. 実施形態3の照明器具を示し、(a)はLED素子の配置を説明する説明図、(b)は配光を説明する図である。The lighting fixture of Embodiment 3 is shown, (a) is explanatory drawing explaining arrangement | positioning of an LED element, (b) is a figure explaining light distribution. 実施形態4の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of lighting fixture of Embodiment 4. FIG. 同上の別の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of another lighting fixture same as the above. 同上のまた別の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of another lighting fixture same as the above. 実施形態5の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of lighting fixture of Embodiment 5. FIG. 実施形態6の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of lighting fixture of Embodiment 6. FIG. 同上の別の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of another lighting fixture same as the above. 同上のまた別の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of another lighting fixture same as the above. 実施形態7の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of lighting fixture of Embodiment 7. FIG. 実施形態8の照明器具の一部省略せる断面図である。It is sectional drawing which can abbreviate | omit a part of lighting fixture of Embodiment 8. FIG. 実施形態9の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be abbreviate | omitted partially showing the lighting fixture of Embodiment 9. FIG. 同上を構成するレンズ体を下側から見た外観斜視図である。It is the external appearance perspective view which looked at the lens body which comprises the same from the lower side. 同上の別の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be partially omitted which shows another lighting fixture same as the above. 実施形態10の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be partially omitted which shows the lighting fixture of Embodiment 10. FIG. 実施形態11の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be partially omitted which shows the lighting fixture of Embodiment 11. FIG. 同上の一部省略せる分解斜視図である。It is a disassembled perspective view which a part can be omitted. 実施形態12の照明器具を示す一部省略せる断面図である。It is sectional drawing which abbreviate | omits a part which shows the lighting fixture of Embodiment 12. FIG. 同上の一部省略せる分解斜視図である。It is a disassembled perspective view which a part can be omitted. 実施形態13の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be partially omitted which shows the lighting fixture of Embodiment 13. 同上の一部省略せる分解斜視図である。It is a disassembled perspective view which a part can be omitted. 実施形態14の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be partially omitted which shows the lighting fixture of Embodiment 14. FIG. 実施形態15の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be partially omitted which shows the lighting fixture of Embodiment 15. 実施形態16の照明器具を示し、レンズ体を下側から見た図である。It is the figure which showed the lighting fixture of Embodiment 16 and looked at the lens body from the lower side. 同上に用いる光学フィルタの説明図である。It is explanatory drawing of the optical filter used for the same as the above. 実施形態17の照明器具に用いるレンズ体の正面図である。It is a front view of the lens body used for the lighting fixture of Embodiment 17. 同上の別の照明器具に用いるレンズ体の正面図である。It is a front view of the lens body used for another lighting fixture same as the above. 実施形態18の照明器具を示す一部省略せる断面図である。It is sectional drawing which can be partially omitted which shows the lighting fixture of Embodiment 18. 従来の照明器具を示し、(a)は断面図、(b)は要部拡大図である。The conventional lighting fixture is shown, (a) is sectional drawing, (b) is a principal part enlarged view.
符号の説明Explanation of symbols
10 基板
11 LED素子
20 レンズ体
10 substrate 11 LED element 20 lens body

Claims (4)

  1. 複数の発光ダイオード素子を備え、前記複数の発光ダイオード素子は、複数の発光ダイオード素子からの光が照射される照射範囲が略円形となるように配置されたことを特徴とする照明器具。   A lighting apparatus comprising a plurality of light emitting diode elements, wherein the plurality of light emitting diode elements are arranged such that an irradiation range irradiated with light from the plurality of light emitting diode elements is substantially circular.
  2. 上記発光ダイオード素子として発光分布が略長方形となる素子を用い、上記複数の発光ダイオード素子を略円形の領域内に配置し、複数の発光ダイオード素子の内、少なくとも一部の発光ダイオード素子は、隣接して配置される発光ダイオード素子に対して発光分布の縦横が互い違いになるようにして配置されたことを特徴とする請求項1記載の照明器具。   As the light emitting diode element, an element having a light emission distribution of a substantially rectangular shape is used, the plurality of light emitting diode elements are arranged in a substantially circular region, and at least some of the light emitting diode elements are adjacent to each other. The lighting fixture according to claim 1, wherein the light emitting diode elements are arranged so that the vertical and horizontal directions of the light emission distribution are staggered.
  3. 上記発光ダイオード素子として発光分布が略長方形となる素子を用い、複数の発光ダイオード素子は、略円形の領域内に、発光分布の長手方向又は短幅方向の何れかが放射線上に位置するように配置されたことを特徴とする請求項1の照明器具。   As the light emitting diode element, an element having a light emission distribution of a substantially rectangular shape is used, and the plurality of light emitting diode elements are arranged so that either the longitudinal direction or the short width direction of the light emission distribution is positioned on the radiation within a substantially circular region. The lighting fixture according to claim 1, wherein the lighting fixture is arranged.
  4. 上記発光ダイオード素子として発光分布が略長方形となる素子を用い、複数の発光ダイオード素子は、略楕円形の領域内に、発光分布の長手方向が互いに略平行になるように配置されたことを特徴とする請求項1の照明器具。   As the light emitting diode element, an element having a light emission distribution of a substantially rectangular shape is used, and the plurality of light emitting diode elements are arranged in a substantially elliptical region so that the longitudinal directions of the light emission distributions are substantially parallel to each other. The lighting fixture according to claim 1.
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US10551028B2 (en) 2013-12-05 2020-02-04 Harman Professional Denmark Aps Illumination device with different distances between light sources and lenslets
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US20170184299A1 (en) * 2015-12-28 2017-06-29 Ephesus Lighting, Inc. Optical lens structures for light emitting diode (led) array

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