发明名称 |
LIGHTING CONTROL DEVICE OF LIGHTING DEVICE FOR VEHICLE |
摘要 |
A lighting control device of a lighting device for a vehicle includes a switching regulator for supplying a driving current to a semiconductor light source. The lighting control device also includes control means having a current detecting portion for detecting the driving current and serving to control dimming of the semiconductor light source in order to reduce a mean current of the driving current by repeating driving and stopping operations of the switching regulator at a high speed upon receipt of a dimming control signal. The current detecting portion has a current holding portion for holding the driving current, detected for a driving period of the switching regulator, for a stopping period after a passage of the driving period.
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申请公布号 |
US2010181914(A1) |
申请公布日期 |
2010.07.22 |
申请号 |
US20090645729 |
申请日期 |
2009.12.23 |
申请人 |
KOITO MANUFACTURING CO., LTD. |
发明人 |
KASABA YUSUKE;ITO MASAYASU |
分类号 |
B60Q1/26;H05B37/02 |
主分类号 |
B60Q1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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