WO2013189136A1 - 前照灯用led光源 - Google Patents
前照灯用led光源 Download PDFInfo
- Publication number
- WO2013189136A1 WO2013189136A1 PCT/CN2012/083199 CN2012083199W WO2013189136A1 WO 2013189136 A1 WO2013189136 A1 WO 2013189136A1 CN 2012083199 W CN2012083199 W CN 2012083199W WO 2013189136 A1 WO2013189136 A1 WO 2013189136A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light source
- light
- led
- point
- high beam
- Prior art date
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Classifications
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
-
- 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
Definitions
- the invention relates to a light source, in particular to an LED light source for a motor vehicle headlight.
- a concentrating mirror and a LED form a lens group that projects a beam of light and illuminates a spot on the screen.
- the spots generated by the multiple lens groups are spliced into light bands to meet the illumination distribution requirements. This structure is bulky, costly, and difficult to process.
- the headlight consists of a concentrating mirror and an LED, but the condensing surface of the concentrating mirror is no longer a rotating surface, but a free-form surface, so that the beam is projected to produce a spot that meets the illumination standard.
- This structure requires that the LED light-emitting density is extremely high, and the light-emitting density is the Lm/mm 2 value on the light-emitting surface, which is suitable for the low-beam light and is difficult to use for the high beam.
- the above structure reflects the concept that the LED is a point source in the design idea. Therefore, the structure of the HID lamp is used, and after all, satisfactory results cannot be obtained.
- the LED light source is a typical surface light source.
- the maximum luminous density of a single LED is 100 Lm/mm 2 , and it is almost impossible to achieve 200 Lm/mm 2 or more.
- the HID has an emission density of 1000 Lm/mm 2 or more, and the halogen lamp has an emission density of 400 Lm/mm 2 or more.
- the above structure has a complicated structure and low utilization rate of light energy in a structure using an LED as a light source.
- the present invention provides an LED light source for a headlight, which aims to save energy, reduce cost, and improve light energy utilization.
- an LED light source for a headlamp according to the present invention is characterized in that the LED light source is a continuous light strip.
- E2 is the illumination required by the E1 illumination point corresponding to the imaging point standard on the detection screen;
- the light strip is a curved surface.
- the light belt is one.
- the light strip is split and there is no dead zone in the joint.
- the divergence angle of the light strip is less than 60 degrees and greater than 0 degrees.
- the strip is flat.
- the high beam source is located at the center of the low beam source.
- the high beam light source controls the illuminance of the illuminating point.
- the high beam source of the control center operates according to the illuminance of the low beam source.
- the invention utilizes the imaging principle to design a light source into a light strip of a surface light source, has a simple structure, reduces parts of the headlight, has low cost, is easy to implement, and has a good lighting effect. Even if the luminous density is low, the cost can be easily achieved.
- Figure 1 is a schematic diagram of illumination used in a headlamp of the present invention.
- Figure 2 is a diagram of the illumination requirements for the low-beam illumination area according to the national standard GB21259-2007.
- Figure 3 is a diagram corresponding to the illumination requirement of Figure 2 after deployment of the present invention.
- Figure 4 is a schematic view of the shape of the present invention.
- Figure 5 is a schematic view of the split type of the present invention.
- Figure 6 is a diagram showing the illumination requirements of the high-beam illumination area according to the national standard GB21259-2007.
- Fig. 7 is a view showing the illumination requirements of the high-beam illumination of the present invention corresponding to Fig. 6.
- Figure 8 is an integrated view of low beam and high beam of the present invention.
- the illuminance E2 (unit Lx) at the illumination region P2 corresponds to the emission density E1 (unit Lm/mm 2 ) at the conjugate point P1 on the optical
- the test is performed on the illumination area detection screen at a distance of 25 meters.
- the illumination requirements of each point are as shown in Table 1: HV 3 4 5 6 7 8 9 10 11 12 13 Max Min Max Max Min Min Min Min Min Min 1 Lx 20 Lx 20 Lx 30 Lx 12 Lx 20 Lx 4 Lx 4 Lx 2 Lx 2 Lx 1 Lx 0.5 Lx
- the illuminance of the imaging point of HV is not more than 1Lx, and the illumination of the imaging point of test point 4 is not more than 20Lx, test point 5 The illuminance of the imaging point is not more than 30Lx, and the remaining test points in Table 1 are not less than the values in Table 1.
- the value in Table 2 is the critical value
- the luminous density of the luminous point hv is not more than 0.86 Lm/mm 2
- the luminous density of the luminous point 4 is not more than 17.4 Lm. / mm 2
- the luminous density of the luminous point 5 is not more than 26Lm/mm 2
- the remaining luminous points in Table 2 are not less than the values in Table 2.
- Embodiment 1 The optical strip is a split type, as shown in Figures 4 and 5 by 8
- the block light strip is assembled, and there is no dead zone at the junction, and the divergence angle of the strip is 55 degrees. Others are the same as in the embodiment 1.
- the divergence angle of the light band in Example 1 was 5 degrees. Others are the same as in the embodiment 1.
- the divergence angle of the light band in Example 1 was 30 degrees. Others are the same as in the embodiment 1.
- the light strip in Embodiment 1 is a high beam light source
- the light strip is flat and tested according to the national standard at an illumination area of 25 meters, Figure 6
- the dimensions are in cm
- the h-h and v-v lines are the horizontal centerline and the vertical centerline
- the HV is the center.
- the two detection points on each side of the HV are 112.5cm from the HV. 225cm; the divergence angle of the light band is 50 degrees.
- the coordinates of the five luminous points corresponding to the high beam are (0, 0), (2.5, 0), ( 5 , 0 ), ( -2.5 , 0 ), ( -5 , 0 ).
- the illuminance of the five detection points is HV is 70-180Lx, the left and right sides of the HV are greater than 40Lx, and the outermost two points are greater than 10Lx.
- the luminous density of the five luminous points on the light band is: high beam
- the luminous point (0, 0) is 31--80Lm/mm 2
- the luminous points (2.5, 0) and (-2.5, 0) are 18 Lm/mm 2 , ( 5 , 0 ) and ( -5 , 0 )
- the dimensions in Figure 7 are in mm.
- the high beam is placed at the center of the low beam.
- the high beam light source controls the illuminance of the illuminating point.
- the high beam source of the control center operates according to the illuminance of the low beam source.
- h, HV, H3, and H4 are low-beam cut-off lines
- h, HV, H3, and H4 are low-beam illumination sources, which are fabricated according to the requirements of low-beam light source.
- A, B, C , D is the high beam illumination area.
- A, B, J, H3, HV, G It is the area where the high beam and low beam illumination sources coincide.
- the cut-off line of the light and dark, the high-beam illumination area, and the low-beam illumination area are packaged together, and the low-light turn-off line appears at the same time; the high beam and the low beam are simultaneously illuminated when the high beam is turned on.
Abstract
Description
HV | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
max | min | max | max | min | min | min | min | min | min | min | min |
1 Lx | 20 Lx | 20 Lx | 30 Lx | 12 Lx | 20 Lx | 4 Lx | 4 Lx | 2 Lx | 2 Lx | 1 Lx | 0.5 Lx |
hv | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
max | min | max | max | min | min | min | min | min | min | min | min |
0.86Lm | 17.4 | 17.4 | 26 | 10.4 | 17.4 | 3.5 | 3.5 | 1.7 | 1.7 | 0.86 | 0.43 |
Claims (9)
- 前照灯用 LED 光源,其特征在于 LED 光源为连续发光的光带。
- 根据权利要求 1 所述的前照灯用 LED 光源,其特征在于光带的每点发光密度公式为 A × E1 × F2=E2 × L2 ,其中 A 为成像镜头集光系数, F 为成像镜头的焦距, L 为投射距离, E1 为光带发光点发光密度, E2 为 E1 发光点对应检测屏幕上的成像点标准要求的照度;光带上发光点坐标公式为 X , Y= 实际成像点坐标 / 放大倍率,放大倍率 = 照明距离 / 聚光镜的焦距。
- 根据权利要求 1 或 2 所述的前照灯用 LED 光源,其特征在于光带为近光光源时,光带为曲面。
- 根据权利要求 3 所述的前照灯用 LED 光源,其特征在于光带为一体。
- 根据权利要求 3 所述的前照灯用 LED 光源,其特征在于光带为分体式,连接处无发光死区。
- 根据权利要求 1 或 2 所述的前照灯用 LED 光源,其特征在于光带的发散角小于 60 度,大于 0 度。
- 根据权利要求 1 或 2 所述的前照灯用 LED 光源,其特征在于光带为远光光源时,光带为平面。
- 根据权利要求 1 所述的前照灯用 LED 光源,其特征在于光带为近光和远光结合光源时,远光光源设在近光光源的中心。
- 根据权利要求 8 所述的前照灯用 LED 光源,其特征在于近光和远光结合光源时,当需要为远光光源工作时按远光光源控制发光点的发光照度,当为近光光源时,控制中心的远光光源按近光光源的发光照度工作。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014528848A JP2014525669A (ja) | 2012-06-21 | 2012-10-19 | ヘッドランプ用led光源 |
DE112012003352.3T DE112012003352T5 (de) | 2012-06-21 | 2012-10-19 | LED-Lichtquelle für Scheinwerfer |
US14/352,482 US9702518B2 (en) | 2012-06-21 | 2012-10-19 | LED light source for headlamp |
KR1020147005440A KR101602779B1 (ko) | 2012-06-21 | 2012-10-19 | 헤드램프용 led 광원 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210206706.4 | 2012-06-21 | ||
CN201210206706.4A CN102691959B (zh) | 2012-06-21 | 2012-06-21 | 前照灯用led光源 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013189136A1 true WO2013189136A1 (zh) | 2013-12-27 |
Family
ID=46857592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2012/083199 WO2013189136A1 (zh) | 2012-06-21 | 2012-10-19 | 前照灯用led光源 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9702518B2 (zh) |
JP (2) | JP2014525669A (zh) |
KR (1) | KR101602779B1 (zh) |
CN (1) | CN102691959B (zh) |
DE (1) | DE112012003352T5 (zh) |
WO (1) | WO2013189136A1 (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102691959B (zh) * | 2012-06-21 | 2016-05-25 | 刘德润 | 前照灯用led光源 |
CN105276477B (zh) * | 2014-05-26 | 2017-10-20 | 王正 | 复合光源车灯 |
Citations (6)
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US6464372B1 (en) * | 2000-06-27 | 2002-10-15 | Osram Sylvania Inc. | Lamp device and assembly |
EP2101105A1 (fr) * | 2008-03-11 | 2009-09-16 | Valeo Vision | Dispositif d'éclairage pour véhicule automobile |
CN201706356U (zh) * | 2010-07-09 | 2011-01-12 | 陈真 | 一种简化的led汽车前照灯 |
CN201748302U (zh) * | 2010-07-05 | 2011-02-16 | 东莞市石碣华中电子技术创新服务有限公司 | 一种利用漫反射原理的led汽车照明灯 |
CN101987593A (zh) * | 2009-07-31 | 2011-03-23 | 日扎拉照明系统有限公司 | 产生动态光图像的机动车led前照灯 |
CN102691959A (zh) * | 2012-06-21 | 2012-09-26 | 郭廷麟 | 前照灯用led光源 |
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JPH07302931A (ja) * | 1994-04-28 | 1995-11-14 | Toyoda Gosei Co Ltd | 集合型ランプ |
DE10009782B4 (de) * | 2000-03-01 | 2010-08-12 | Automotive Lighting Reutlingen Gmbh | Beleuchtungseinrichtung eines Fahrzeugs |
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JP4493916B2 (ja) * | 2003-01-08 | 2010-06-30 | 三菱電機株式会社 | 自動車用前照灯 |
JP4083593B2 (ja) * | 2003-02-13 | 2008-04-30 | 株式会社小糸製作所 | 車両用前照灯 |
JP4314911B2 (ja) * | 2003-08-20 | 2009-08-19 | スタンレー電気株式会社 | 車両前照灯 |
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DE102005041234A1 (de) * | 2005-08-31 | 2007-03-01 | Hella Kgaa Hueck & Co. | Scheinwerfer für Fahrzeuge |
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DE102009041189A1 (de) * | 2009-09-14 | 2011-03-24 | Bayerische Motoren Werke Aktiengesellschaft | Fahrzeugscheinwerfer |
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JP5636756B2 (ja) * | 2010-06-17 | 2014-12-10 | スタンレー電気株式会社 | 車両用灯具ユニット |
JP5706139B2 (ja) * | 2010-11-26 | 2015-04-22 | スタンレー電気株式会社 | 車両用前照灯装置 |
CN202675122U (zh) * | 2012-06-21 | 2013-01-16 | 郭廷麟 | 前照灯用led光源 |
-
2012
- 2012-06-21 CN CN201210206706.4A patent/CN102691959B/zh active Active
- 2012-10-19 JP JP2014528848A patent/JP2014525669A/ja active Pending
- 2012-10-19 DE DE112012003352.3T patent/DE112012003352T5/de not_active Withdrawn
- 2012-10-19 WO PCT/CN2012/083199 patent/WO2013189136A1/zh active Application Filing
- 2012-10-19 KR KR1020147005440A patent/KR101602779B1/ko active IP Right Grant
- 2012-10-19 US US14/352,482 patent/US9702518B2/en not_active Expired - Fee Related
-
2015
- 2015-10-19 JP JP2015205415A patent/JP6225346B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6464372B1 (en) * | 2000-06-27 | 2002-10-15 | Osram Sylvania Inc. | Lamp device and assembly |
EP2101105A1 (fr) * | 2008-03-11 | 2009-09-16 | Valeo Vision | Dispositif d'éclairage pour véhicule automobile |
CN101987593A (zh) * | 2009-07-31 | 2011-03-23 | 日扎拉照明系统有限公司 | 产生动态光图像的机动车led前照灯 |
CN201748302U (zh) * | 2010-07-05 | 2011-02-16 | 东莞市石碣华中电子技术创新服务有限公司 | 一种利用漫反射原理的led汽车照明灯 |
CN201706356U (zh) * | 2010-07-09 | 2011-01-12 | 陈真 | 一种简化的led汽车前照灯 |
CN102691959A (zh) * | 2012-06-21 | 2012-09-26 | 郭廷麟 | 前照灯用led光源 |
Also Published As
Publication number | Publication date |
---|---|
JP6225346B2 (ja) | 2017-11-08 |
CN102691959B (zh) | 2016-05-25 |
KR20140054154A (ko) | 2014-05-08 |
US20140268857A1 (en) | 2014-09-18 |
JP2016012574A (ja) | 2016-01-21 |
DE112012003352T5 (de) | 2014-04-24 |
KR101602779B1 (ko) | 2016-03-21 |
JP2014525669A (ja) | 2014-09-29 |
US9702518B2 (en) | 2017-07-11 |
CN102691959A (zh) | 2012-09-26 |
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