JP5257665B2 - 車両用前照灯ユニット及び車両用前照灯 - Google Patents
車両用前照灯ユニット及び車両用前照灯 Download PDFInfo
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- JP5257665B2 JP5257665B2 JP2008211980A JP2008211980A JP5257665B2 JP 5257665 B2 JP5257665 B2 JP 5257665B2 JP 2008211980 A JP2008211980 A JP 2008211980A JP 2008211980 A JP2008211980 A JP 2008211980A JP 5257665 B2 JP5257665 B2 JP 5257665B2
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
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- 239000004332 silver Substances 0.000 description 2
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
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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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/255—Lenses with a front view of circular or truncated circular outline
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/36—Combinations of two or more separate reflectors
- F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Claims (11)
- LED光源、投影レンズ、及び前記LED光源と前記投影レンズとの間に配置された光学部材を有する車両用前照灯ユニットであって、前記LED光源の光軸方向は、前記車両用前照灯ユニットの光軸方向と略一致しており、前記LED光源の光を、前記光学部材を介して前記投影レンズを通過させることにより、カットオフラインを有する所定配光パターンを形成する車両用前照灯ユニットにおいて、
前記LED光源は、前記投影レンズに対向して配置され、
前記投影レンズは、当該投影レンズで投影すると上下左右を反転して投影するレンズで、且つ前記LED光源側に当該投影レンズの入射面と前記LED光源との間に焦点群を有するものとされ、
前記光学部材は、前記LED光源の光軸を挟んで下側に水平方向に且つ車両用前照灯ユニットの略光軸上に配置された第1の反射面と上側に配置された第2の反射面とを備え、
前記第1の反射面は、前記投影レンズ側のエッジが当該投影レンズの収差を考慮した水平面上に位置するとともに前記焦点群に沿った略楕円形状に形成されて当該焦点群に合う状態となるように配置され、且つ前記略楕円形状のエッジを前記LED光源の発光部付近まで前記車両用前照灯ユニットの光軸方向に延長した形状であり、
前記第2の反射面は、前記LED光源を焦点とした略回転円錐曲線面、又は該回転円錐曲線面の断面形状をもつ曲面により構成されており、
前記第1の反射面と第2の反射面との間から通過する前記LED光源からの直射光は、何物にも反射させずに前記投影レンズを透過して直射光による配光パターンの領域(Ha)を照射し、
前記LED光源から出射し前記第1の反射面で反射した光は、前記投影レンズを透過して第1の配光パターンの領域(Hb)を照射し、
前記LED光源から出射し前記第2の反射面で反射した光は、前記投影レンズを透過して第2の配光パターンの領域(Hc)を照射し、
前記直射光による配光パターンの領域(Ha)と前記第1の配光パターンの領域(Hb)とが、前記車両用前照灯ユニットの光軸上に重畳し、前記第2の配光パターンの領域(Hc)が前記直射光による配光パターンの領域(Ha)および前記第1の配光パターンの領域(Hb)の周囲に配置するように、前記第1の反射面および第2の反射面が配置され、
前記LED光源の発光部の下辺が車両用前照灯ユニットの光軸と略一致していることを特徴とする車両用前照灯ユニット。 - 前記光学部材は第3の反射面を有し、該第3の反射面は、前記第1の反射面と前記LED光源の光軸を挟んで対向する位置であって該LED光源光軸と略並行に配置されている請求項1に記載の車両用前照灯ユニット。
- 前記光学部材の前記第1の反射面、及び前記第2の反射面で囲まれる部分が樹脂で満たされている請求項1に記載の車両用前照灯ユニット。
- 前記光学部材の前記第1の反射面、及び前記第2の反射面の一部、若しくは全部に反射表面処理が施されている請求項3に記載の車両用前照灯ユニット。
- 前記光学部材の前記第1の反射面、前記第2の反射面、及び前記第3の反射面で囲まれる部分が樹脂で満たされている請求項2に記載の車両用前照灯ユニット。
- 前記光学部材の前記第1の反射面、前記第2の反射面、及び前記第3の反射面の一部、若しくは全部に反射表面処理が施されている請求項5に記載の車両用前照灯ユニット。
- 前記光学部材の第1の反射面の前記エッジとLED光源の発光面との距離が10mm以内である請求項1〜6のいずれかに記載の車両用前照灯ユニット。
- 前記光学部材は、前記LED光源の光軸上付近のみ空洞部が形成され、該空洞部を介してLED光源の光軸上の光線が前記投影レンズに直接入射され、空洞部の下方に前記第1の反射面が設けられている請求項3、4、5又は6のいずれかに記載の車両用前照灯ユニット。
- 前記光学部材は、前記LED光源からの光を入射させる面が、LED光源側に凸形状である請求項3、4、5又は6のいずれかに記載の車両用前照灯ユニット。
- 前記光学部材における第1の反射面の光軸中心付近の一部が、車両用信号灯具のカットオフラインを形成する15度〜45度に傾斜した面により構成されている請求項1〜9のいずれかに記載の車両用前照灯ユニット。
- 請求項1〜10のいずれかに記載の車両用前照灯ユニットによって構成されていることを特徴とする車両用前照灯。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008211980A JP5257665B2 (ja) | 2008-08-20 | 2008-08-20 | 車両用前照灯ユニット及び車両用前照灯 |
DE102009037698A DE102009037698A1 (de) | 2008-08-20 | 2009-08-17 | Fahrzeugbeleuchtungseinheit und Fahrzeugleuchte |
US12/544,362 US8152346B2 (en) | 2008-08-20 | 2009-08-20 | Vehicle lighting unit and vehicle light |
Applications Claiming Priority (1)
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JP2008211980A JP5257665B2 (ja) | 2008-08-20 | 2008-08-20 | 車両用前照灯ユニット及び車両用前照灯 |
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JP2010049886A JP2010049886A (ja) | 2010-03-04 |
JP5257665B2 true JP5257665B2 (ja) | 2013-08-07 |
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US (1) | US8152346B2 (ja) |
JP (1) | JP5257665B2 (ja) |
DE (1) | DE102009037698A1 (ja) |
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JP4080780B2 (ja) | 2002-04-23 | 2008-04-23 | 株式会社小糸製作所 | 光源ユニット |
JP4339156B2 (ja) * | 2004-03-18 | 2009-10-07 | 株式会社小糸製作所 | 車両用灯具ユニット |
FR2884899B1 (fr) * | 2005-04-21 | 2007-06-15 | Valeo Vision Sa | Module d'eclairage donnant un faisceau lumineux avec coupure pour projecteur de vehicule automobile, et projecteur comprenant un tel module |
US7461960B2 (en) * | 2006-05-05 | 2008-12-09 | Zweibruder Optoelectronics | LED illumination module |
US7883250B2 (en) * | 2008-04-24 | 2011-02-08 | Ichikoh Industries, Ltd. | Lamp unit for vehicles |
-
2008
- 2008-08-20 JP JP2008211980A patent/JP5257665B2/ja active Active
-
2009
- 2009-08-17 DE DE102009037698A patent/DE102009037698A1/de not_active Ceased
- 2009-08-20 US US12/544,362 patent/US8152346B2/en active Active
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JP2010049886A (ja) | 2010-03-04 |
US20100046243A1 (en) | 2010-02-25 |
DE102009037698A1 (de) | 2010-03-25 |
US8152346B2 (en) | 2012-04-10 |
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