JP2008186786A - Led灯具ユニット - Google Patents
Led灯具ユニット Download PDFInfo
- Publication number
- JP2008186786A JP2008186786A JP2007021555A JP2007021555A JP2008186786A JP 2008186786 A JP2008186786 A JP 2008186786A JP 2007021555 A JP2007021555 A JP 2007021555A JP 2007021555 A JP2007021555 A JP 2007021555A JP 2008186786 A JP2008186786 A JP 2008186786A
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- JP
- Japan
- Prior art keywords
- guide plate
- light guide
- light
- lamp unit
- end surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0029—Spatial arrangement
- B60Q1/0041—Spatial arrangement of several lamps in relation to each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/242—Light guides characterised by the emission area
- F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/242—Light guides characterised by the emission area
- F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/249—Light guides with two or more light sources being coupled into the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
【解決手段】本発明のLED灯具ユニット1は、導光板3の一端面5に沿って複数のLED2を並設し、導光板3の一方の平面側に反射板4を配設した。そして、反射板4の端部を導光板3が位置する方向に所定の角度に折り曲げて折曲部7を形成し、折曲部7の折り曲げ方向の面を反射面8とした。これにより、LED灯具ユニット1の照射光を、LED2から発せられて導光板3内を導光されて平面11から出射した出射光L1、L2と、導光板3内を導光されて他端面6から出射した光が反射板4の反射面8で反射された反射光L3との混合光で構成した。その結果、出射光L1、L2は比較的広く且つ均一性が高い輝度分布を形成すると共に、反射光L3は比較的狭く且つ中央部に最高輝度値を有する輝度分布を形成する。
【選択図】図5
Description
夫々の光軸方向を互いに平行にして並設された複数のLEDと、
少なくとも1つの端面に沿って前記LEDが配設された導光板と、
前記導光板の一方の平面側に配設された反射板を備え、
前記反射板は、該反射板の、前記導光板の前記LEDが配設された側の一端面に対向する他端面の側に位置する端部が、前記他端面側に所定の角度で折り曲げられて折曲部が形成され、少なくとも前記折曲部の折り曲げ方向の面が反射面とされていることを特徴とするものである。
2 LED
3 導光板
4 反射板
5 一端面
6 他端面
7 折曲部
8 反射面
9 平面
10 光拡散模様
11 平面
12 平板部
13 反射面
14 湾曲面
15 レンズ部
16 灯具ユニット
17 車両用灯具
Claims (4)
- 夫々の光軸方向を互いに平行にして並設された複数のLEDと、
少なくとも1つの端面に沿って前記LEDが配設された導光板と、
前記導光板の一方の平面側に配設された反射板を備え、
前記反射板は、該反射板の、前記導光板の前記LEDが配設された側の一端面に対向する他端面の側に位置する端部が、前記他端面側に所定の角度で折り曲げられて折曲部が形成され、少なくとも前記折曲部の折り曲げ方向の面が反射面とされていることを特徴とするLED灯具ユニット。 - 前記導光板の前記反射板側の平面に同一形状の複数の光拡散模様が形成され、前記光拡散模様は前記導光板の前記一端面側から前記他端面側に向かうにつれて徐々に配置密度が高くなるか、または徐々に大きさが大きくなるか、または徐々に深さが深くなるかのいずれか、あるいはそれらの組み合わせであることを特徴とする請求項1に記載のLED灯具ユニット。
- 前記光拡散模様は、丸形または多角形のいずれかの模様であることを特徴とする請求項2に記載のLED灯具ユニット。
- 前記導光板の前記LEDが配設された側の一端面は、その一部が前記LEDの並設間隔と同一間隔で形成された、前記LEDの光軸を中心軸とする、前記導光板側に凹んだ2次元曲面状の湾曲面であることを特徴とする請求項1から3のいずれか1項に記載のLED灯具ユニット。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007021555A JP4780788B2 (ja) | 2007-01-31 | 2007-01-31 | Led灯具ユニット |
US12/020,240 US7654721B2 (en) | 2007-01-31 | 2008-01-25 | LED lighting unit and vehicle lamp |
EP08001662A EP1953451A3 (en) | 2007-01-31 | 2008-01-29 | LED lighting unit and vehicle lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007021555A JP4780788B2 (ja) | 2007-01-31 | 2007-01-31 | Led灯具ユニット |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008186786A true JP2008186786A (ja) | 2008-08-14 |
JP4780788B2 JP4780788B2 (ja) | 2011-09-28 |
Family
ID=39491380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007021555A Active JP4780788B2 (ja) | 2007-01-31 | 2007-01-31 | Led灯具ユニット |
Country Status (3)
Country | Link |
---|---|
US (1) | US7654721B2 (ja) |
EP (1) | EP1953451A3 (ja) |
JP (1) | JP4780788B2 (ja) |
Cited By (23)
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DE102011119859A1 (de) | 2010-12-02 | 2012-06-06 | Stanley Electric Co. Ltd. | Fahrzeugleuchte |
JP2012151015A (ja) * | 2011-01-20 | 2012-08-09 | Honda Motor Co Ltd | ヘッドライト |
JP2013016386A (ja) * | 2011-07-05 | 2013-01-24 | Koito Mfg Co Ltd | 車両用灯具 |
JP2013513912A (ja) * | 2009-12-11 | 2013-04-22 | オートモーティブ・ライティング・リア・ランプス・フランス・ソシエテ・パール・アクシオン・サンプリフィエ | 自動車用シグナル灯装置 |
JP2013257947A (ja) * | 2012-06-11 | 2013-12-26 | Stanley Electric Co Ltd | 車両用灯具 |
JP2014103053A (ja) * | 2012-11-22 | 2014-06-05 | Stanley Electric Co Ltd | 車両用灯具 |
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JP2014222638A (ja) * | 2013-05-14 | 2014-11-27 | 株式会社小糸製作所 | 車輌用灯具 |
US8950916B2 (en) | 2010-06-23 | 2015-02-10 | Stanley Electric Co., Ltd. | Vehicle light fitting unit with a plurality of light sources |
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Also Published As
Publication number | Publication date |
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US7654721B2 (en) | 2010-02-02 |
EP1953451A3 (en) | 2012-01-11 |
JP4780788B2 (ja) | 2011-09-28 |
US20080186726A1 (en) | 2008-08-07 |
EP1953451A2 (en) | 2008-08-06 |
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