Invention Grant
US09167665B2 Lighting device, lighting apparatus using the same, and lighting system
有权
照明装置，使用其的照明装置和照明系统
- Patent Title: Lighting device, lighting apparatus using the same, and lighting system
- Patent Title (中): 照明装置，使用其的照明装置和照明系统
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Application No.: US13944124Application Date: 2013-07-17
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Publication No.: US09167665B2Publication Date: 2015-10-20
- Inventor: Hisaya Takikita , Masafumi Yamamoto , Katsunobu Hamamoto
- Applicant: Panasonic Corporation
- 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: JP2012-163845 20120724
- Main IPC: H01J1/60
- IPC: H01J1/60 ; H01J7/42 ; H05B37/04 ; H05B37/02 ; H05B33/08
Abstract:
A control unit controls an operation of an electric power conversion unit so that load current that flows through a light source load becomes a constant value, using electric power setting value that is used to determine a size of electric power that is supplied to the light source load and a current detection value that is detected by a current detection resistor (current detection unit), and a load electric power calculation unit obtains load electric power of the light source load using the electric power setting value and a voltage detection value that is detected by a voltage detection unit, and an input electric power estimation unit corrects a circuit loss for the obtained load electric power and estimates input electric power.
Public/Granted literature
- US20140028196A1 LIGHTING DEVICE, LIGHTING APPARATUS USING THE SAME, AND LIGHTING SYSTEM Public/Granted day:2014-01-30
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