| 发明名称 | Power compensation device and light emitting diode illumination apparatus having the same | ||
| 摘要 | A light emitting diode (LED) illumination device having a power compensation function is provided. The illumination device includes a light emitting unit including a plurality of LEDs connected in series, a rectifier for rectifying input AC power to provide a rectified voltage to the light emitting device, and a power compensator for detecting a change in the rectified voltage provided to the light emitting device and compensating a current provided to the light emitting device according to the detected change in the rectified voltage. | ||
| 申请公布号 | US8928247(B2) | 申请公布日期 | 2015.01.06 |
| 申请号 | US201213724690 | 申请日期 | 2012.12.21 |
| 申请人 | LG Electronics Inc. | 发明人 | Cheon Jeong In;You Se Joon;Cho Jang Hwan;Lee Do Hyung |
| 分类号 | H05B37/02;H05B33/08 | 主分类号 | H05B37/02 |
| 代理机构 | Ked & Associates, LLP | 代理人 | Ked & Associates, LLP |
| 主权项 | 1. A light emitting diode (LED) lighting apparatus comprising: a light emitting device including a plurality of LEDs connected in series; a rectifier for converting an AC voltage signal to a rectified voltage signal to power the light emitting device; a voltage detector for detecting a level of the rectified voltage signal; a reference voltage generator for generating a reference voltage based on the detected voltage; and a current control circuit configured to control an amount of current that flows through the light emitting device based on the generated reference voltage, wherein the generated reference voltage is adjusted to compensate for changes in the rectified voltage signal. | ||
| 地址 | Seoul KR | ||