Invention Grant
- Patent Title: Lighting apparatus and lighting fixture using same
- Patent Title (中): 照明设备和照明灯具使用相同
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Application No.: US14433785Application Date: 2013-10-10
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Publication No.: US09204511B2Publication Date: 2015-12-01
- Inventor: Sana Esaki , Masahiro Naruo , Kenichi Fukuda
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- 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: JP2012-225409 20121010; JP2013-083588 20130412; JP2013-207504 20131002
- International Application: PCT/JP2013/006036 WO 20131010
- International Announcement: WO2014/057677 WO 20140417
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B33/08 ; H02M3/156

Abstract:
A lighting apparatus includes a chopper circuit and a control circuit that controls the chopper circuit. The control circuit includes a determining unit that determines a duty ratio of a dimming signal, and an output control unit that outputs a drive signal. The control circuit outputs a drive signal from the output control unit according to a result of a determination by the determining unit and causes the solid state light-emitting element to be lighted in a normal mode. In the charging mode, the control circuit sets an average value of a current flowing through an inductor to be higher than in the normal mode and charges a smoothing capacitor until a voltage across the smoothing capacitor reaches a prescribed voltage. When power is supplied, the control circuit charges the smoothing capacitor in the charging mode and subsequently lights the solid state light-emitting element in the normal mode.
Public/Granted literature
- US20150250034A1 LIGHTING APPARATUS AND LIGHTING FIXTURE USING SAME Public/Granted day:2015-09-03
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