Invention Grant
- Patent Title: Light-emitting diode driver circuit and LED light source
- Patent Title (中): 发光二极管驱动电路和LED光源
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Application No.: US13996327Application Date: 2011-12-27
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Publication No.: US09204516B2Publication Date: 2015-12-01
- Inventor: Toshiaki Kurachi , Kazuo Gouda
- Applicant: Toshiaki Kurachi , Kazuo Gouda
- Applicant Address: JP Osaka
- Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee: Panasonic Intellectual Property Management Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- Priority: JP2010-291328 20101227
- International Application: PCT/JP2011/007306 WO 20111227
- International Announcement: WO2012/090489 WO 20120705
- Main IPC: H01J13/46
- IPC: H01J13/46 ; H05B33/08 ; F21V17/10 ; F21K99/00 ; F21Y101/02 ; F21V3/04
Abstract:
A light-emitting diode driver circuit and an LED light source which are capable of reliably turning OFF an LED even when an input voltage having a value smaller than a predetermined value is supplied. A light-emitting diode driver circuit for turning ON an LED includes: an inverter which outputs electric power for driving the LED; and an inverter control circuit which controls an operation of the inverter, and when a DC voltage applied to the inverter control circuit has a value smaller than the predetermined value, the inverter control circuit stops the operation of the inverter.
Public/Granted literature
- US20130271001A1 LIGHT-EMITTING DIODE DRIVER CIRCUIT AND LED LIGHT SOURCE Public/Granted day:2013-10-17
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