| 发明名称 | DC power source unit and LED lamp system | ||
| 摘要 | A DC power source unit 37 is provided which boosts source voltage from a power source portion 36. A lighting circuit 38 is provided which supplies DC voltage to loads, the DC voltage being obtained by stepping down output current of the DC power source circuit 37. A control circuit 39 is provided which controls the lighting circuit 38 in accordance with at least either voltage or current of LEDs 25 and controls the DC power source unit 37 so that a ratio of output voltage to voltage of the LEDs 25 becomes a preset fixed ratio. | ||
| 申请公布号 | US8823278(B2) | 申请公布日期 | 2014.09.02 |
| 申请号 | US201113218767 | 申请日期 | 2011.08.26 |
| 申请人 | Toshiba Lighting & Technology Corporation | 发明人 | Iwai Naoko;Sasai Toshihiko;Kamata Masahiko;Terasaka Hiroshi;Ishikita Toru;Kawano Hitoshi;Kumagai Masatoshi |
| 分类号 | H05B37/02;H05B33/08 | 主分类号 | H05B37/02 |
| 代理机构 | DLA Piper LLP (US) | 代理人 | DLA Piper LLP (US) |
| 主权项 | 1. A DC power source unit comprising: a DC power source circuit configured to boost source voltage, the DC power source circuit comprising a step-up chopper circuit; a load control circuit configured to supply DC voltage to loads, the DC voltage being obtained by stepping down output voltage of the DC power source circuit; and a control circuit configured to control the load control circuit in accordance with at least either voltage or current of the loads, and configured to control the DC power source circuit so that a ratio of the output voltage of the DC power source circuit to the voltage of the loads becomes a preset fixed ratio. | ||
| 地址 | Kanagawa JP | ||