JP2008171723A - 車両用前照灯の灯具ユニット - Google Patents
車両用前照灯の灯具ユニット Download PDFInfo
- Publication number
- JP2008171723A JP2008171723A JP2007004842A JP2007004842A JP2008171723A JP 2008171723 A JP2008171723 A JP 2008171723A JP 2007004842 A JP2007004842 A JP 2007004842A JP 2007004842 A JP2007004842 A JP 2007004842A JP 2008171723 A JP2008171723 A JP 2008171723A
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- Japan
- Prior art keywords
- reflecting surface
- led
- light
- lamp unit
- focal point
- 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
-
- 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
- F21S41/10—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]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
-
- 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
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
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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)
Abstract
【解決手段】リフレクタ4にLED5を焦点とした放物面を基調とする第1反射面M1を形成すると共に、LED5の出射光軸Xをこの第1反射面M1側に向けて配置したため、LED5の出射光軸X付近の光量の多い直射光を直接に第1反射面M1へ導き、第1反射面M1から1回反射のみの反射光S1として車両前方へ照射することができる。1回反射のみで車両前方へ照射するため、LED5の光の減衰を抑制した状態で車両前方へ照射でき、LED5の光の有効利用を図ることができる。
【選択図】図1
Description
2 前照灯
3 隔壁
4 リフレクタ
5 LED(光源)
6 シェード
6a エッジ部
7 平面ミラー
9 補助反射面
10 底面部
X LEDの出射光軸
F1 第1焦点
F2 第2焦点
f1 疑似焦点
K1 第1光軸
K2 第2光軸
K3 第3光軸
M1 第1反射面
M2 第2反射面
M3 第3反射面
S1 第1反射面からの光
S2 第2反射面からの光
S3 第3反射面からの光
HP1 第1反射面の配光パターン
HP2 第2反射面の配光パターン
HP3 第3反射面の配光パターン
θ1 第2光軸の角度
θ2 LEDの出射光軸の角度
Claims (4)
- 車両用前照灯の灯具ユニットであって、
当該灯具ユニットの前方下側に焦点を有する放物面を基調とする第1反射面と、
前記第1反射面の焦点近傍に配置され且つ後方上方の前記第1反射面に出射光軸が向けられた光源としてのLEDと、
を備えた車両用前照灯の灯具ユニット。 - 請求項1に記載の車両用前照灯の灯具ユニットであって、
前記LEDを前方上側から覆う状態で設けられ且つ前記LEDを第1焦点とした楕円面を基調とする補助反射面と、
前記第1反射面の下方に設けられ且つ前記補助反射面の第2焦点を焦点とする放物面を基調とした第2反射面と、
をさらに備えることを特徴とする車両用前照灯の灯具ユニット。 - 請求項2に記載の車両用前照灯の灯具ユニットであって、
前記補助反射面の第2焦点の近傍の下方に設けられ且つ前記補助反射面の第2焦点の近傍にエッジ部を有するシェードであって、前記補助反射面からの反射光を当該エッジ部で部分的にカットして所定の配光パターンで前記第2反射面に入射させるシェードを、さらに備えることを特徴とする車両用前照灯の灯具ユニット。 - 請求項3に記載の車両用前照灯の灯具ユニットであって、
前記LEDの後方下側に設けられ、前記LEDからの光を反射する平面ミラーと、
前記第1反射面の上方に設けられ、前記LEDの前記平面ミラーに対する対称位置を焦点とした放物面を基調とする第3反射面と、
をさらに備えることを特徴とする車両用前照灯の灯具ユニット。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007004842A JP4626618B2 (ja) | 2007-01-12 | 2007-01-12 | 車両用前照灯の灯具ユニット |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007004842A JP4626618B2 (ja) | 2007-01-12 | 2007-01-12 | 車両用前照灯の灯具ユニット |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008171723A true JP2008171723A (ja) | 2008-07-24 |
JP4626618B2 JP4626618B2 (ja) | 2011-02-09 |
Family
ID=39699611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007004842A Expired - Fee Related JP4626618B2 (ja) | 2007-01-12 | 2007-01-12 | 車両用前照灯の灯具ユニット |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4626618B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130142527A (ko) * | 2012-06-19 | 2013-12-30 | 현대모비스 주식회사 | 차량용 램프 |
JP2014175149A (ja) * | 2013-03-08 | 2014-09-22 | Ichikoh Ind Ltd | 車両用前照灯 |
WO2022129625A1 (fr) * | 2020-12-18 | 2022-06-23 | Valeo Vision | Projecteur automobile avec plusieurs modules d'éclairage sur une platine commune inclinée |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001118408A (ja) * | 1999-10-21 | 2001-04-27 | Ichikoh Ind Ltd | 小型光源モジュール及び光源ユニット |
JP2006019052A (ja) * | 2004-06-30 | 2006-01-19 | Ichikoh Ind Ltd | 車両用灯具 |
-
2007
- 2007-01-12 JP JP2007004842A patent/JP4626618B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001118408A (ja) * | 1999-10-21 | 2001-04-27 | Ichikoh Ind Ltd | 小型光源モジュール及び光源ユニット |
JP2006019052A (ja) * | 2004-06-30 | 2006-01-19 | Ichikoh Ind Ltd | 車両用灯具 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130142527A (ko) * | 2012-06-19 | 2013-12-30 | 현대모비스 주식회사 | 차량용 램프 |
KR101969721B1 (ko) | 2012-06-19 | 2019-04-18 | 현대모비스 주식회사 | 차량용 램프 |
JP2014175149A (ja) * | 2013-03-08 | 2014-09-22 | Ichikoh Ind Ltd | 車両用前照灯 |
WO2022129625A1 (fr) * | 2020-12-18 | 2022-06-23 | Valeo Vision | Projecteur automobile avec plusieurs modules d'éclairage sur une platine commune inclinée |
FR3118120A1 (fr) * | 2020-12-18 | 2022-06-24 | Valeo Vison - Service IP | Projecteur automobile avec plusieurs modules d’éclairage sur une platine commune inclinée. |
Also Published As
Publication number | Publication date |
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JP4626618B2 (ja) | 2011-02-09 |
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