发明名称 |
Lighting device and illumination apparatus using the same |
摘要 |
A lighting device includes: a lighting unit for supplying a lighting power to a light source unit; and a controller for controlling the lighting unit. The lighting unit has an inductor and a switching element, and a diode for flowing a flyback current of the inductor to the light source unit during an OFF period of the switching element, and the controller has a unit for intermittently driving an ON/OFF operation of the switching element by a PWM signal and a unit for driving the switching element by a frequency higher than that of the PWM signal during an ON period of the PWM signal, and when the PWM signal falls, the controller reduces a peak value of a load current flowing through the light source unit during a certain period. |
申请公布号 |
EP2503846(B1) |
申请公布日期 |
2016.03.02 |
申请号 |
EP20120001522 |
申请日期 |
2012.03.06 |
申请人 |
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. |
发明人 |
NARUO, MASAHIRO;IDO, SHIGERU |
分类号 |
H05B33/08 |
主分类号 |
H05B33/08 |
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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