发明名称 |
CONTROL CIRCUIT AND METHOD FOR AN LED EXTERNAL LIGHTING UNIT OF A VEHICLE |
摘要 |
The invention describes a control circuit for an LED external lighting unit of a vehicle, said lighting unit comprising at least an LED source and a passive heatsink. The control circuit comprises: a temperature sensor adapted to provide a first output signal carrying information about the operating temperature of the LED source and/or of the passive heatsink; a first output node operatively connectable to an optical and/or acoustic warning device and adapted to provide thereto a first control signal, depending upon the first output signal, adapted to produce an alarm warning through said warning device when said temperature is higher than a first threshold value; a driver unit being adapted to output an LED source driving signal, said driving signal being a relatively high-power signal or a relatively low-power signal. |
申请公布号 |
EP2989856(B1) |
申请公布日期 |
2017.01.11 |
申请号 |
EP20140718951 |
申请日期 |
2014.04.14 |
申请人 |
PIAGGIO & C. S.p.A. |
发明人 |
PEDANI, Giuseppe;SANFELICE, Yari;BARACCHINO, Luigi |
分类号 |
B60Q11/00;B60Q1/04;B60Q1/14;B62J6/00;B62J6/02;F21S8/10;H05B33/08 |
主分类号 |
B60Q11/00 |
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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