Invention Grant
US08258706B2 LED drive circuit, LED illumination component, LED illumination device, and LED illumination system
有权
LED驱动电路，LED照明组件，LED照明装置和LED照明系统
- Patent Title: LED drive circuit, LED illumination component, LED illumination device, and LED illumination system
- Patent Title (中): LED驱动电路，LED照明组件，LED照明装置和LED照明系统
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Application No.: US12539241Application Date: 2009-08-11
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Publication No.: US08258706B2Publication Date: 2012-09-04
- Inventor: Yasuhiro Maruyama , Hiroyuki Shoji , Mitsuru Mariyama , Masakazu Ikeda , Hirohisa Warita , Katsumi Inaba , Naoki Fukunaga
- Applicant: Yasuhiro Maruyama , Hiroyuki Shoji , Mitsuru Mariyama , Masakazu Ikeda , Hirohisa Warita , Katsumi Inaba , Naoki Fukunaga
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2008-263228 20081009
- Main IPC: H05B37/00
- IPC: H05B37/00 ; H05B41/00
Abstract:
An LED drive circuit is an LED dive circuit that receives an alternating voltage to drive an LED, and includes a current remove portion that removes a current from a current supply line that supplies an LED drive current to the LED. If an input current to the LED drive circuit is an unnecessary current, the LED does not light because of current removal by the current remove portion. If the input current to the LED drive circuit turns into the LED drive current from the unnecessary current, the current remove portion decreases the amount of current removed.
Public/Granted literature
- US20100090604A1 LED DRIVE CIRCUIT, LED ILLUMINATION COMPONENT, LED ILLUMINATION DEVICE, AND LED ILLUMINATION SYSTEM Public/Granted day:2010-04-15
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