发明名称 |
LIGHTING DEVICE, ILLUMINATION DEVICE AND ILLUMINATION SYSTEM |
摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a power loss in a control power supply circuit regardless of a conduction angle in a lighting device into which an AC power having the phase-controlled voltage waveform is input. <P>SOLUTION: A smooth capacitor C26 smooths a voltage value of a control power supply. A first charge circuit 123 (first control power supply generation circuit) generates a first charge current which charges the smooth capacitor C26 from the AC power supply. When a control circuit is operated, a second charge circuit 124 (second control power supply generation circuit) generates a second charge current which charges the smooth capacitor. When the second charge current is generated, the second charge circuit 124 stops operation of the first charge circuit 123. <P>COPYRIGHT: (C)2012,JPO&INPIT |
申请公布号 |
JP2011243433(A) |
申请公布日期 |
2011.12.01 |
申请号 |
JP20100114975 |
申请日期 |
2010.05.19 |
申请人 |
MITSUBISHI ELECTRIC CORP;MITSUBISHI ELECTRIC CORP |
发明人 |
NAGAI SATOSHI;ASAKA TASUKU |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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