发明授权
US08575839B2 Headlamp LED lighting apparatus and vehicle headlamp lighting system
有权
前照灯LED照明装置和车灯前照灯系统
- 专利标题： Headlamp LED lighting apparatus and vehicle headlamp lighting system
- 专利标题（中）： 前照灯LED照明装置和车灯前照灯系统
-
申请号： US13381876申请日： 2009-09-10
-
公开(公告)号： US08575839B2公开(公告)日： 2013-11-05
- 发明人: Yu Inoue , Takashi Ohsawa
- 申请人： Yu Inoue , Takashi Ohsawa
- 申请人地址： JP Tokyo
- 专利权人： Mitsubishi Electric Corporation
- 当前专利权人： Mitsubishi Electric Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 国际申请： PCT/JP2009/004497 WO 20090910
- 国际公布： WO2011/030381 WO 20110317
- 主分类号： B60Q1/04
- IPC分类号： B60Q1/04
摘要：
A headlamp LED lighting apparatus, which lights an LED block 2 having a plurality of LEDs connected in series, samples the output voltage of the headlamp LED lighting apparatus, calculates the average voltage during every prescribed interval, and has a storage unit for storing the average voltage during every prescribed interval calculated. A control circuit 8 compares the voltage variation in the average voltage during every prescribed interval read out of the storage unit with a prescribed threshold, and decides an LED failure of the LED block 2 from a result of the comparison.
公开/授权文献
信息查询
