发明申请
- 专利标题： LIGHTING DEVICE
- 专利标题（中）： 照明设备
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申请号： US12835149申请日： 2010-07-13
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公开(公告)号： US20100277083A1公开(公告)日： 2010-11-04
- 发明人: Kiyoshi Nishimura , Hirokazu Otake , Tomohiro Sanpei , Shuhei Matsuda
- 申请人： Kiyoshi Nishimura , Hirokazu Otake , Tomohiro Sanpei , Shuhei Matsuda
- 专利权人： Toshiba Lighting & Technology Corporation
- 当前专利权人： Toshiba Lighting & Technology Corporation
- 优先权： JP2008-036398 20080218
- 主分类号： H05B37/02
- IPC分类号： H05B37/02
摘要：
According to one embodiment, a lighting device includes a device board, a rectification device connected to a commercial power supply, a series LED circuit, and a transistor (current limiter) which limits a maximum current flowing through the series LED circuit. The series circuit mounted on the device board is configured by connecting in series a plurality of LED elements. Each of the LED elements lights when an output voltage of the rectification device is applied to the series circuit. A number of LED elements included in the series circuit is set in a manner that a voltage applied to the series LED circuit is 70 to 90% of the output voltage of the rectification device.