发明名称 |
Lighting device and illumination apparatus using same |
摘要 |
An LED lighting device includes: a power source unit for supplying the DC output voltage to a light-emitting diode; a control unit for adjusting the DC output voltage; and a control power source unit for supplying a control power to the control unit. The control power source unit generates the control power with the DC output voltage and has: a current-limiting resistor for limiting an electric current that flows from the power source unit to the control unit; a constant voltage unit for converting a voltage to be applied to the control unit through the current-limiting resistor unit to a constant voltage; and a switching unit for switching a resistance value of the current-limiting resistor unit among a plurality of resistance values. |
申请公布号 |
US8669718(B2) |
申请公布日期 |
2014.03.11 |
申请号 |
US201213541044 |
申请日期 |
2012.07.03 |
申请人 |
YAMAMOTO MASAFUMI;HAMAMOTO KATUNOBU;ASANO HIROYUKI;TAKIKITA HISAYA;NAKAGAWA HIROYUKI;YOSHIMOTO YUJI;PANASONIC CORPORATION |
发明人 |
YAMAMOTO MASAFUMI;HAMAMOTO KATUNOBU;ASANO HIROYUKI;TAKIKITA HISAYA;NAKAGAWA HIROYUKI;YOSHIMOTO YUJI |
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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