发明名称 |
LED lighting device and illumination apparatus |
摘要 |
<p>According to one embodiment, an LED lighting device includes a DC source, a non-insulated step-down chopper and a light emitting diode. The non-insulated step-down chopper includes: a first circuit in which a switching element, a current detecting impedance element and an inductor are connected in series to each other; a second circuit in which the inductor and a freewheel diode are connected in series to each other; and a control portion for controlling the switching element. A power portion including the switching element and the control portion are constituted by a single package IC, and the current detecting impedance element and inductor are attached to the outside of the IC.</p> |
申请公布号 |
EP2364062(A3) |
申请公布日期 |
2013.04.10 |
申请号 |
EP20110152006 |
申请日期 |
2011.01.25 |
申请人 |
TOSHIBA LIGHTING & TECHNOLOGY CORPORATION;KABUSHIKI KAISHA TOSHIBA |
发明人 |
IWAI, NAOKO;OSAKI, HAJIME;ASAMI, KENICHI;KAWANO, HITOSHI;KUMAGAI, MASATOSHI |
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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