Invention Grant
- Patent Title: LED vehicle lighting apparatus
- Patent Title (中): LED车载照明装置
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Application No.: US12613257Application Date: 2009-11-05
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Publication No.: US08120201B2Publication Date: 2012-02-21
- Inventor: Takashi Fujino
- Applicant: Takashi Fujino
- Applicant Address: JP Tokyo
- Assignee: Stanley Electric Co., Ltd.
- Current Assignee: Stanley Electric Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Kenealy Vaidya LLP
- Priority: JP2008-289007 20081111
- Main IPC: B60L1/14
- IPC: B60L1/14

Abstract:
An LED vehicle lighting apparatus including a fail-safe function can supply a plurality of LEDs connected in series with a requisite voltage that is larger than a supply voltage of a battery. The vehicle lighting apparatus can include a DC-DC convertor and a subsidiary feed circuit. The DC-DC convertor can be configured to supply the LEDs with a substantially constant current by a controller. At least one output of the subsidiary feed circuit is connected to an LED in the LEDs, and a switching element can also be connected between the LED and ground. When the controller has a breakdown or trouble, LEDs between the LED and ground can be directly lighted by the battery in accordance with a signal provided by the controller. Thus, the disclosed subject matter can provide various LED lighting apparatuses including a user friendly fail-safe function.
Public/Granted literature
- US20100117538A1 LED VEHICLE LIGHTING APPARATUS Public/Granted day:2010-05-13
Information query
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