Invention Grant
- Patent Title: LED lighting device and lighting equipment
- Patent Title (中): LED照明装置和照明设备
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Application No.: US12547969Application Date: 2009-08-26
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Publication No.: US08476840B2Publication Date: 2013-07-02
- Inventor: Noriyuki Kitamura , Keiichi Shimizu , Hiroshi Terasaka , Tomokazu Usami
- Applicant: Noriyuki Kitamura , Keiichi Shimizu , Hiroshi Terasaka , Tomokazu Usami
- Assignee: Toshiba Lighting & Technology Corporation
- Current Assignee: Toshiba Lighting & Technology Corporation
- Agency: McDermott Will & Emery LLP
- Priority: JP2008-221692 20080829; JP2009-168174 20090716
- Main IPC: H05B37/02
- IPC: H05B37/02

Abstract:
An LED lighting device includes light emitting diode, a current control circuit having a first series circuit of first and second switching elements, a second series circuit of third and fourth switching elements, and a condenser, which is configured so that the first and second series circuits are parallel connected and the condenser is connected between a connection point of the first and second switching elements and a connection point of the third and fourth switching elements, and a control circuit for alternatively on-off controlling a pair of the first and fourth switching elements and a pair of the second and third switching elements.
Public/Granted literature
- US20100052565A1 LED LIGHTING DEVICE AND LIGHTING EQUIPMENT Public/Granted day:2010-03-04
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