JP5732613B2 - lighting equipment - Google Patents

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JP5732613B2
JP5732613B2 JP2011096701A JP2011096701A JP5732613B2 JP 5732613 B2 JP5732613 B2 JP 5732613B2 JP 2011096701 A JP2011096701 A JP 2011096701A JP 2011096701 A JP2011096701 A JP 2011096701A JP 5732613 B2 JP5732613 B2 JP 5732613B2
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light emitting
light
reflecting surface
substrate
emitting diode
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JP2012230762A (en
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愛 松島
愛 松島
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は、照明器具に関し、特に発光ダイオードを光源とする照明器具に関する。   The present invention relates to a lighting fixture, and more particularly to a lighting fixture using a light emitting diode as a light source.

近年、従来の白熱ランプや蛍光ランプに代えて発光ダイオードを光源とする照明器具が様々な場所に設置されてきている。例えば、平板状のベースにLED光源デバイスが上向きに取り付けられ、LED光源デバイスを覆うように半円筒形の反射板が配設された照明器具が特許文献1に開示されている。LED光源デバイスは、矩形状の基板と、基板の長手方向に沿ってライン状に実装された複数個のLEDチップと、LEDチップ全体を一体的に覆う略半円柱状の透明樹脂部とを備える。而して、透明樹脂部で拡散された光がLED光源デバイスから放射され、拡散放射された光が反射板で反射されて照明空間に照射される。   In recent years, lighting fixtures using light-emitting diodes as light sources instead of conventional incandescent lamps and fluorescent lamps have been installed in various places. For example, Patent Document 1 discloses a lighting fixture in which an LED light source device is mounted upward on a flat base, and a semi-cylindrical reflector is disposed so as to cover the LED light source device. The LED light source device includes a rectangular substrate, a plurality of LED chips mounted in a line along the longitudinal direction of the substrate, and a substantially semi-cylindrical transparent resin portion that integrally covers the entire LED chip. . Thus, the light diffused by the transparent resin portion is emitted from the LED light source device, and the diffused and radiated light is reflected by the reflecting plate and irradiated to the illumination space.

特開2002-299697号公報(段落0022〜0024及び図4、図5参照)JP 2002-299697 A (see paragraphs 0022 to 0024 and FIGS. 4 and 5)

ところで、特許文献1記載の従来例では、LED光源デバイスから放射される光は全て反射板に反射されてから照明空間に照射されているので、LED光源デバイスの放射光が直接照明空間に照射される場合と比べて光の利用効率が低下してしまう。一方、LED光源デバイスの放射光の一部又は全部が直接照明空間に照射される場合、照明空間に居る人が眩しさ(グレア)を感じ易くなってしまう。因みに、視線を中心として上下30度の範囲は「グレアゾーン」とされており、この視覚範囲内に輝度の高い光源があると、まぶしさを感じると言われている。   By the way, in the conventional example described in Patent Document 1, since all the light emitted from the LED light source device is reflected by the reflecting plate and then applied to the illumination space, the emitted light of the LED light source device is directly applied to the illumination space. Compared to the case where the light is used, the light use efficiency is lowered. On the other hand, when part or all of the radiated light of the LED light source device is directly irradiated onto the illumination space, a person in the illumination space tends to feel glare (glare). Incidentally, the range of 30 degrees above and below the line of sight is the “glare zone”, and it is said that if there is a light source with high brightness within this visual range, you will feel glare.

本発明は、上記課題に鑑みて為されたものであり、光の利用効率の低下及びグレアを抑制しつつ一方向への照射範囲を拡げるように配光制御することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to perform light distribution control so as to widen an irradiation range in one direction while suppressing reduction in light use efficiency and glare.

本発明の照明器具は、複数個の発光ダイオードが長手方向に並べて基板に実装されてなる発光部と、当該発光部に発光用の電源を供給する電源部と、前記発光部から放射される光の配光を制御する配光部と、前記発光部、電源部、配光部を内部に収納する箱形の器具本体とを備え、前記配光部は、それぞれ鏡面からなり、前記発光ダイオードから放射される光を反射する第1反射面及び第2反射面、第3反射面を有し、前記第1反射面は、前記複数個の発光ダイオードを挟んで前記基板の長手方向に対向する位置にそれぞれ設けられ且つ前記発光ダイオードの光軸に沿って前記発光ダイオードから離れる向きに傾斜する凹曲面からなり、前記第2反射面は、前記複数個の発光ダイオードを挟んで前記基板の短手方向に対向する位置にそれぞれ設けられ且つ前記発光ダイオードの光軸に沿って前記発光ダイオードから離れる向きに傾斜する凹曲面からなり、前記第3反射面は、複数個の前記発光ダイオード毎に当該発光ダイオードを挟んで前記基板の長手方向に対向する位置に一対ずつ設けられ、且つ前記発光ダイオードの光軸に沿って前記発光ダイオードから離れる向きに傾斜する凹曲面からなり、前記基板の実装面に対する前記第3反射面の傾斜角度が前記実装面に対する前記第1反射面の傾斜角度よりも大きいことを特徴とする。   The lighting apparatus of the present invention includes a light emitting unit in which a plurality of light emitting diodes are arranged in a longitudinal direction and mounted on a substrate, a power supply unit that supplies power for light emission to the light emitting unit, and light emitted from the light emitting unit. A light distribution unit that controls the light distribution of the light source, and the light emitting unit, the power supply unit, and a box-shaped instrument body that houses the light distribution unit therein, the light distribution units each having a mirror surface, from the light emitting diode A first reflecting surface, a second reflecting surface, and a third reflecting surface that reflect emitted light, and the first reflecting surface is opposed to the longitudinal direction of the substrate across the plurality of light emitting diodes Each having a concave curved surface inclined in a direction away from the light emitting diode along the optical axis of the light emitting diode, and the second reflecting surface is a short direction of the substrate across the plurality of light emitting diodes Each at a position opposite to And a concave curved surface inclined in a direction away from the light emitting diode along the optical axis of the light emitting diode, and the third reflecting surface includes a plurality of light emitting diodes sandwiching the light emitting diode. A tilt angle of the third reflecting surface with respect to the mounting surface of the substrate, which is formed of a concave curved surface that is provided in pairs at positions facing each other in the longitudinal direction and is inclined in a direction away from the light emitting diode along the optical axis of the light emitting diode. Is larger than the inclination angle of the first reflecting surface with respect to the mounting surface.

この照明器具において、前記第3反射面は、前記発光ダイオードの光軸と直交する平面と交差する形状が、楕円における長軸と並行する弧状に形成されていることが好ましい。   In this lighting fixture, it is preferable that the third reflecting surface is formed in an arc shape that intersects with a plane perpendicular to the optical axis of the light emitting diode in parallel with the long axis of the ellipse.

本発明の照明器具は、光の利用効率の低下及びグレアを抑制しつつ一方向への照射範囲を拡げるように配光制御することができるという効果がある。   The lighting fixture of this invention has the effect that light distribution control can be performed so that the irradiation range to one direction may be expanded, suppressing the fall of the utilization efficiency of light, and a glare.

本発明の実施形態における配光部の斜視図である。It is a perspective view of the light distribution part in embodiment of this invention. 同上における配光部を示し、(a)は正面図、(b)は(a)のX−X線断面矢視図、(c)は(a)のY−Y線断面矢視図である。The light distribution part in the same as above is shown, (a) is a front view, (b) is a cross-sectional view taken along line XX of (a), and (c) is a cross-sectional view taken along line YY of (a). . 同上の斜視図である。It is a perspective view same as the above. 同上の断面図である。It is sectional drawing same as the above. 同上を示し、図4のZ−Z線断面矢視図である。FIG. 5 is a sectional view taken along the line ZZ in FIG. 同上を示し、図4のW−W線断面矢視図である。It is the same as the above and is a WW line cross-sectional arrow view of FIG.

以下、通路や軒下を照明するための照明器具に本発明の技術思想を適用した実施形態について、図面を参照して詳細に説明する。   Hereinafter, an embodiment in which a technical idea of the present invention is applied to a lighting fixture for illuminating a passage and an eaves will be described in detail with reference to the drawings.

本実施形態の照明器具は、図3〜図6に示すように発光部1、電源部2、配光部3、器具本体4、パッキン5などを備える。発光部1は、幾つかの部材からなる基板10の表面(下面)に複数個の発光ダイオードが一列に並べて実装されることで構成されている。発光ダイオードは、例えば、発光ダイオードチップから放射される青色光と、当該青色光が蛍光体で色変換された黄色光とを混色することによって白色光を放射する、いわゆる白色LEDである。   The lighting fixture of this embodiment is provided with the light emission part 1, the power supply part 2, the light distribution part 3, the instrument main body 4, the packing 5, etc. as shown in FIGS. The light emitting unit 1 is configured by mounting a plurality of light emitting diodes in a line on the surface (lower surface) of a substrate 10 made of several members. The light emitting diode is, for example, a so-called white LED that emits white light by mixing blue light emitted from a light emitting diode chip and yellow light obtained by color-converting the blue light with a phosphor.

基板10は、実装基板11、配線板12、放熱板13を有している。実装基板11は全体が矩形平板状に形成され、それぞれに発光ダイオードチップが実装される6つの凹所11Aが長手方向(図4における左右方向)に一列に並べて設けられている。配線板12は、凹所11Aと対応する位置に6つの開口12Aが設けられて実装基板11の前面(下面)側に取り付けられる。そして、配線板12に形成されている配線パターン(図示せず)と、各発光ダイオードチップのアノード及びカソードとがボンディングワイヤ(図示せず)などで電気的に接続される。実装基板11の背面(上面)側に放熱板13が配設され、発光ダイオードチップの発する熱が実装基板11から放熱板13に伝導される。   The substrate 10 includes a mounting substrate 11, a wiring board 12, and a heat radiating plate 13. The entire mounting substrate 11 is formed in a rectangular flat plate shape, and six recesses 11A, each of which is mounted with a light emitting diode chip, are arranged in a line in the longitudinal direction (left-right direction in FIG. 4). The wiring board 12 is attached to the front surface (lower surface) side of the mounting substrate 11 with six openings 12A provided at positions corresponding to the recesses 11A. A wiring pattern (not shown) formed on the wiring board 12 and the anode and cathode of each light emitting diode chip are electrically connected by bonding wires (not shown) or the like. A heat radiating plate 13 is disposed on the back surface (upper surface) side of the mounting substrate 11, and heat generated by the light emitting diode chip is conducted from the mounting substrate 11 to the heat radiating plate 13.

電源部2は、商用の交流電源から供給される交流電源から直流電源を作成して発光部1に供給するものであって、例えば、力率改善用の昇圧チョッパ回路の後段に降圧チョッパ回路が接続されて構成される。ただし、このような電源部2は従来周知であるから、詳細な回路構成の図示並びに説明は省略する。   The power supply unit 2 creates a DC power source from an AC power source supplied from a commercial AC power source and supplies the DC power source to the light emitting unit 1. For example, a step-down chopper circuit is provided at a stage subsequent to the step-up chopper circuit for power factor improvement. Connected and configured. However, since such a power supply unit 2 is well known in the art, illustration and description of a detailed circuit configuration are omitted.

配光部3は発光部1から放射される光の配光を制御するものであって、基板10の長手方向に沿った配光を拡げつつ基板10の短手方向(図6における左右方向)に沿った配光を狭め、且つグレアを低減するように構成される。ただし、配光部3の詳細な構成については後述する。   The light distribution unit 3 controls the light distribution of the light emitted from the light emitting unit 1, and spreads the light distribution along the longitudinal direction of the substrate 10, and the short direction of the substrate 10 (left and right direction in FIG. 6). Is configured to narrow the light distribution along and reduce glare. However, the detailed configuration of the light distribution unit 3 will be described later.

器具本体4はベース40とカバー41によって矩形箱状に構成され、発光部1、電源部2、配光部3などを内部に収納して通路の天井や軒などに配設される。カバー41はアルミダイカスト製であって、相対的に面積の大きい一面(図4〜図6における上面)が開口した矩形箱状に形成されている。またカバー41の底面(開口面と対向する面。図4〜図6における下面)には配光部2で配光制御された発光部1の光が器具本体4の外に取り出される矩形の窓孔42が開口している。窓孔42は、カバー41の内底面に配設される透明なパネル43で閉塞され、異物や雨水の進入が阻止されている。また、長手方向に対向するカバー41の両側壁には、それぞれねじ挿通孔44が貫通している。   The appliance body 4 is formed in a rectangular box shape by a base 40 and a cover 41, and houses the light emitting unit 1, the power supply unit 2, the light distribution unit 3 and the like inside and is disposed on the ceiling or eaves of the passage. The cover 41 is made of aluminum die-casting, and is formed in a rectangular box shape with one surface having a relatively large area (the upper surface in FIGS. 4 to 6) opened. In addition, a rectangular window through which the light of the light emitting unit 1 controlled by the light distribution unit 2 is extracted from the bottom surface of the cover 41 (the surface opposite to the opening surface, the lower surface in FIGS. 4 to 6). A hole 42 is opened. The window hole 42 is blocked by a transparent panel 43 disposed on the inner bottom surface of the cover 41, and foreign matter and rainwater are prevented from entering. In addition, screw insertion holes 44 pass through both side walls of the cover 41 facing in the longitudinal direction.

パネル43はアクリル樹脂などの透光性を有する合成樹脂によって矩形平板状に形成されている。カバー41の底面において、長手方向に沿った窓孔42の両側にそれぞれボス45が突設されている。ボス45の内部に雌ねじが形成されており、この雌ねじに螺合するねじ53によって、カバー41底面における窓孔42の周縁との間でパネル43を挟持する金属製の押さえ板54が固定される。   The panel 43 is formed in a rectangular flat plate shape by a synthetic resin having translucency such as acrylic resin. On the bottom surface of the cover 41, bosses 45 are respectively provided on both sides of the window hole 42 along the longitudinal direction. A female screw is formed inside the boss 45, and a metal pressing plate 54 that holds the panel 43 between the peripheral edge of the window hole 42 on the bottom surface of the cover 41 is fixed by a screw 53 that is screwed into the female screw. .

ベース40は、矩形平板状の主片400と、主片400の周縁から立ち下がる側片401と、主片400の長手方向両端縁より立ち下がる一対の取付片402とが金属板によって一体に形成されてなる。主片400の中央には電源部2と外部の交流電源とを接続するための電源コード(図示せず)が挿通される孔403が貫通している。また、主片400の長手方向における孔403の両側に、上向きに突出する皿状の凹部404が設けられ、各凹部404の底にねじ挿通孔404Aが貫通している。   The base 40 is a rectangular plate-shaped main piece 400, side pieces 401 that fall from the periphery of the main piece 400, and a pair of mounting pieces 402 that fall from both longitudinal edges of the main piece 400, which are integrally formed by a metal plate. Being done. A hole 403 through which a power cord (not shown) for connecting the power supply unit 2 and an external AC power source is inserted passes through the center of the main piece 400. Further, a dish-like recess 404 protruding upward is provided on both sides of the hole 403 in the longitudinal direction of the main piece 400, and a screw insertion hole 404A passes through the bottom of each recess 404.

主片400の中央下面に取付台6が設けられている。取付台6は、長方形の金属板の長手方向両端部が略L字形に折曲されてなり、両端部が主片400に固定されることで両端部以外の部分(中央部と呼ぶ。)が主片400から離れ且つ平行に配置されている。そして、取付台6の中央部の下面側に配光部3がねじ止めされるとともに、配光部3と取付台6との間に基板10が挟持されることで発光部1が取付台6に取り付けられる。また、主片400の長手方向一端側に電源部3がねじ止めされている。さらに、一対の取付片402には、それぞれ雌ねじ部402Aが設けられている。   A mounting base 6 is provided on the central lower surface of the main piece 400. The mounting base 6 is formed by bending both ends in the longitudinal direction of a rectangular metal plate into a substantially L shape, and fixing both ends to the main piece 400 so that a portion other than both ends (referred to as a central portion). The main piece 400 is arranged apart from and in parallel. And the light distribution part 3 is screwed to the lower surface side of the center part of the mounting base 6, and the light emitting part 1 is attached to the mounting base 6 by sandwiching the substrate 10 between the light distribution part 3 and the mounting base 6. Attached to. The power supply unit 3 is screwed to one end side of the main piece 400 in the longitudinal direction. Further, each of the pair of attachment pieces 402 is provided with a female screw portion 402A.

ベース40は、カバー41の開口内に側片401及び一対の取付片402が挿入され、カバー41の外からねじ挿通孔44に挿通される組立ねじ7が取付片402の雌ねじ部402Aに螺合することでカバー41と結合される。   In the base 40, the side piece 401 and the pair of mounting pieces 402 are inserted into the opening of the cover 41, and the assembly screw 7 inserted from the outside of the cover 41 into the screw insertion hole 44 is screwed into the female screw portion 402 A of the mounting piece 402. By doing so, it is combined with the cover 41.

パッキン5は合成ゴムなどの弾性を有する材料によって矩形平板状に形成され、ベース40を覆うようにカバー41の開口面(上面)側に被せられる。なお、パッキン5の中央部には、ベース40の孔403に連通する挿通孔50及び凹部404が嵌合する一対の嵌合孔51が貫通している。また、パッキン5の下面周縁には、カバー41の開口端縁と嵌合する嵌合溝52が形成されている。   The packing 5 is formed in a rectangular flat plate shape by an elastic material such as synthetic rubber, and is placed on the opening surface (upper surface) side of the cover 41 so as to cover the base 40. In addition, a pair of fitting holes 51 into which the insertion hole 50 communicating with the hole 403 of the base 40 and the concave portion 404 are fitted penetrate the center portion of the packing 5. Further, a fitting groove 52 that fits with the opening edge of the cover 41 is formed on the periphery of the lower surface of the packing 5.

次に、本発明の要旨である配光部3の構成について、主に図1,図2を参照して詳細に説明する。   Next, the structure of the light distribution part 3 which is the gist of the present invention will be described in detail mainly with reference to FIGS.

配光部3は、熱可塑性樹脂(例えば、PBTなどのエンジニアリング・プラスチック)により、一面(図1における上面)が開口した矩形箱状に形成された成形体からなる。配光部3の内底面には、それぞれに発光部1の発光ダイオードが挿通される6つの開口窓33が配光部3の長手方向に沿って一列に並べて設けられている。これらの開口窓33は、配光部3の長手方向に対向する縁が楕円における長軸と並行する弧状に形成され、配光部3の短手方向に対向する縁が直線状に形成されている(図2(a)参照)。配光部3の外底面には、取付台6にねじ止めするための一対のねじ孔34が長手方向の両端に形成されている。そして、配光部3が取付台6にねじ止めされて発光部1と組み立てられた状態では、各開口窓33を通して発光ダイオードが配光部3内に露出する(図4参照)。   The light distribution unit 3 is formed of a molded body formed in a rectangular box shape with one surface (upper surface in FIG. 1) opened by a thermoplastic resin (for example, engineering plastic such as PBT). On the inner bottom surface of the light distribution unit 3, six opening windows 33 through which the light emitting diodes of the light emitting unit 1 are inserted are arranged in a line along the longitudinal direction of the light distribution unit 3. These opening windows 33 are formed such that an edge facing the longitudinal direction of the light distribution portion 3 is formed in an arc shape parallel to the long axis of the ellipse, and an edge facing the short direction of the light distribution portion 3 is formed in a straight line. (See FIG. 2 (a)). On the outer bottom surface of the light distribution section 3, a pair of screw holes 34 for screwing to the mounting base 6 are formed at both ends in the longitudinal direction. In a state where the light distribution unit 3 is screwed to the mounting base 6 and assembled with the light emitting unit 1, the light emitting diode is exposed in the light distribution unit 3 through each opening window 33 (see FIG. 4).

配光部3の内部には、それぞれ鏡面からなる第1反射面30、第2反射面31、第3反射面32が形成されている。第2反射面31は、配光部3の短手方向に対向する位置(図2(a)においては開口窓33の上下両側)にそれぞれ設けられ且つ発光ダイオードの光軸に沿って発光ダイオードから離れる向きに傾斜する凹曲面からなる(図2(b)参照)。なお、第2反射面31は開口窓33の直線状の縁と交わっている。   Inside the light distribution section 3, a first reflecting surface 30, a second reflecting surface 31, and a third reflecting surface 32 each having a mirror surface are formed. The second reflecting surfaces 31 are respectively provided at positions facing the transversal direction of the light distribution section 3 (upper and lower sides of the opening window 33 in FIG. 2A) and from the light emitting diode along the optical axis of the light emitting diode. It consists of a concave curved surface that inclines in a direction away from it (see FIG. 2B). The second reflecting surface 31 intersects with the straight edge of the opening window 33.

第3反射面32は、各開口窓33毎に開口窓33を挟んで配光部3の長手方向に対向する位置(図2(a)においては開口窓33の左右両側)に一対ずつ設けられ、且つ発光ダイオードの光軸に沿って前記発光ダイオードから離れる向きに傾斜する凹曲面からなる(図2(c)参照)。なお、第3反射面32は、発光ダイオードの光軸と直交する平面と交差する形状が楕円における長軸と並行する弧状に形成されるとともに、開口窓33の楕円弧状の縁と交わっている(図2(a)参照)。   A pair of third reflecting surfaces 32 are provided for each opening window 33 at positions facing the longitudinal direction of the light distribution section 3 across the opening window 33 (on the left and right sides of the opening window 33 in FIG. 2A). And a concave curved surface that inclines in a direction away from the light emitting diode along the optical axis of the light emitting diode (see FIG. 2C). The third reflecting surface 32 is formed in an arc shape in which the shape intersecting the plane perpendicular to the optical axis of the light emitting diode is parallel to the long axis of the ellipse, and intersects with the elliptical arc edge of the opening window 33 ( (See FIG. 2 (a)).

第1反射面30は、配光部3の長手方向に対向する位置(図2(a)においては左右両側)にそれぞれ設けられ且つ発光ダイオードの光軸に沿って発光ダイオードから離れる向きに傾斜する凹曲面からなる(図2(c)参照)。なお、第1反射面30は、第3反射面32の縁と一部(短手方向の中央部)で交わっている。また、基板10の実装面に対する第3反射面32の傾斜角度が基板10の実装面に対する第1反射面30の傾斜角度よりも大きく設定されている(図2(c)参照)。つまり、第3反射面32の傾斜角度は、第1反射面30の傾斜角度に比べて垂直(90度)に近くなっている。   The first reflecting surfaces 30 are respectively provided at positions facing the longitudinal direction of the light distribution section 3 (on the left and right sides in FIG. 2A), and are inclined away from the light emitting diode along the optical axis of the light emitting diode. It consists of a concave curved surface (see FIG. 2 (c)). The first reflecting surface 30 intersects with the edge of the third reflecting surface 32 at a part (the central portion in the short direction). Further, the inclination angle of the third reflection surface 32 with respect to the mounting surface of the substrate 10 is set larger than the inclination angle of the first reflection surface 30 with respect to the mounting surface of the substrate 10 (see FIG. 2C). That is, the inclination angle of the third reflection surface 32 is closer to the vertical (90 degrees) than the inclination angle of the first reflection surface 30.

ここで、本実施形態の照明器具のように通路や軒下を照明する用途においては、一方向(通路や軒下の長手方向)への照射範囲を拡げるように配光制御されることが好ましい。一方、通路や軒下を通行する人が眩しさを感じ難くする、すなわち、グレアを抑制することも必要である。   Here, in the use of illuminating the passage and the eaves like the lighting fixture of the present embodiment, it is preferable that the light distribution is controlled so as to expand the irradiation range in one direction (longitudinal direction under the passage and the eaves). On the other hand, it is also necessary to make it difficult for a person who passes under a passage or eaves to feel dazzling, that is, to suppress glare.

而して本実施形態の照明器具では、配光部3の第2反射面31が凹曲面に形成されることで短手方向の配光が狭められているので、第2反射面31が平面である場合に比べて効率的に光を照射することができる。しかも、第3反射面32が鉛直方向(発光ダイオードの光軸方向)に平行な平面ではなく凹曲面からなるので、第3反射面32で反射した光が「グレアゾーン」に入り難くなり、その結果、グレアを抑制することができる。また、本実施形態では第1反射面30の傾斜角度に比べて第3反射面32の傾斜角度が垂直に近くなっているので、第3反射面が垂直な平面である場合と比較したときに、照射範囲が狭くなる度合を低減することができる。   Thus, in the lighting fixture of the present embodiment, the light distribution in the short direction is narrowed by forming the second reflecting surface 31 of the light distribution unit 3 in a concave curved surface, so the second reflecting surface 31 is flat. Compared with the case where it is, it can irradiate light efficiently. Moreover, since the third reflecting surface 32 is not a flat surface parallel to the vertical direction (the optical axis direction of the light emitting diode) but a concave curved surface, the light reflected by the third reflecting surface 32 becomes difficult to enter the “glare zone”. , Glare can be suppressed. Further, in this embodiment, the inclination angle of the third reflection surface 32 is close to the vertical angle compared to the inclination angle of the first reflection surface 30, so that when compared with the case where the third reflection surface is a vertical plane. The degree to which the irradiation range becomes narrow can be reduced.

上述のように本実施形態の照明器具によれば、光の利用効率の低下及びグレアを抑制しつつ一方向への照射範囲を拡げるように配光制御することができる。   As described above, according to the lighting apparatus of the present embodiment, it is possible to perform light distribution control so as to expand the irradiation range in one direction while suppressing a decrease in light utilization efficiency and glare.

1 発光部
2 電源部
3 配光部
4 器具本体
10 基板
30 第1反射面
31 第2反射面
32 第3反射面
DESCRIPTION OF SYMBOLS 1 Light emission part 2 Power supply part 3 Light distribution part 4 Instrument body
10 Board
30 First reflective surface
31 Second reflecting surface
32 3rd reflective surface

Claims (2)

複数個の発光ダイオードが長手方向に並べて基板に実装されてなる発光部と、当該発光部に発光用の電源を供給する電源部と、前記発光部から放射される光の配光を制御する配光部と、前記発光部、電源部、配光部を内部に収納する箱形の器具本体とを備え、前記配光部は、それぞれ鏡面からなり、前記発光ダイオードから放射される光を反射する第1反射面及び第2反射面、第3反射面を有し、前記第1反射面は、前記複数個の発光ダイオードを挟んで前記基板の長手方向に対向する位置にそれぞれ設けられ且つ前記発光ダイオードの光軸に沿って前記発光ダイオードから離れる向きに傾斜する凹曲面からなり、前記第2反射面は、前記複数個の発光ダイオードを挟んで前記基板の短手方向に対向する位置にそれぞれ設けられ且つ前記発光ダイオードの光軸に沿って前記発光ダイオードから離れる向きに傾斜する凹曲面からなり、前記第3反射面は、複数個の前記発光ダイオード毎に当該発光ダイオードを挟んで前記基板の長手方向に対向する位置に一対ずつ設けられ、且つ前記発光ダイオードの光軸に沿って前記発光ダイオードから離れる向きに傾斜する凹曲面からなり、前記基板の実装面に対する前記第3反射面の傾斜角度が前記実装面に対する前記第1反射面の傾斜角度よりも大きいことを特徴とする照明器具。   A light emitting unit in which a plurality of light emitting diodes are arranged in a longitudinal direction and mounted on a substrate, a power supply unit that supplies power for light emission to the light emitting unit, and an arrangement that controls light distribution of light emitted from the light emitting unit. A light-emitting unit, and a light-emitting unit, a power supply unit, and a box-shaped instrument main body that accommodates the light distribution unit. The light distribution units each have a mirror surface and reflect light emitted from the light-emitting diode. A first reflecting surface, a second reflecting surface, and a third reflecting surface, wherein the first reflecting surface is provided at a position facing the longitudinal direction of the substrate across the plurality of light emitting diodes, and the light emitting device; The second reflecting surface is provided at a position facing the short side direction of the substrate across the plurality of light emitting diodes, the concave curved surface being inclined in a direction away from the light emitting diode along the optical axis of the diode. And said light emission The third reflecting surface is opposed to the longitudinal direction of the substrate across the light emitting diodes for each of the plurality of light emitting diodes. A pair of each is provided at a position and is a concave curved surface inclined in a direction away from the light emitting diode along the optical axis of the light emitting diode, and an inclination angle of the third reflecting surface with respect to the mounting surface of the substrate is relative to the mounting surface The lighting fixture characterized by being larger than the inclination-angle of a said 1st reflective surface. 前記第3反射面は、前記発光ダイオードの光軸と直交する平面と交差する形状が、楕円における長軸と並行する弧状に形成されていることを特徴とする請求項1記載の照明器具。   The lighting apparatus according to claim 1, wherein the third reflecting surface is formed in an arc shape parallel to a long axis of an ellipse so that the third reflecting surface intersects a plane perpendicular to the optical axis of the light emitting diode.
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JP6553668B2 (en) * 2016-04-28 2019-07-31 株式会社遠藤照明 Lighting device, reflector, and reflector set
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US11885481B2 (en) 2020-09-02 2024-01-30 Jiaxing Super Lighting Electric Appliance Co., Ltd LED lighting device
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