发明名称 |
Dimming Control System For Vehicular Lamp |
摘要 |
A dimming control system 1 includes: light source units each having a respective LED; and a control unit connected to the light source units via power supply lines. The control unit is connected to each of the light source units in series. The control unit includes: switch portions that control dimming of the LEDs by repeating an ON/OFF operation in a predetermined cycle; current detection circuits and voltage detection circuits that detect a current or a voltage supplied via the power supply lines; and a CPU that determines there is an abnormality in the power supply lines or the light source units when a value of the detected current or voltage exceeds a predetermined range while the switch portions are ON.
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申请公布号 |
US2010052537(A1) |
申请公布日期 |
2010.03.04 |
申请号 |
US20090536540 |
申请日期 |
2009.08.06 |
申请人 |
KOITO MANUFACTURING CO., LTD. |
发明人 |
MURAKAMI KENTAROU;ITO MASAYASU |
分类号 |
B60Q1/14 |
主分类号 |
B60Q1/14 |
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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