发明申请
US20080030141A1 ILLUMINATION DEVICES WITH COOLING FANS AND COOLING METHODS THEREOF
有权
具有冷却风扇的照明装置及其冷却方法
- 专利标题： ILLUMINATION DEVICES WITH COOLING FANS AND COOLING METHODS THEREOF
- 专利标题（中）： 具有冷却风扇的照明装置及其冷却方法
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申请号： US11778562申请日： 2007-07-16
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公开(公告)号： US20080030141A1公开(公告)日： 2008-02-07
- 发明人: Bang-Ji Wang
- 申请人： Bang-Ji Wang
- 申请人地址： TW TAOYUAN
- 专利权人： BENQ CORPORATION
- 当前专利权人： BENQ CORPORATION
- 当前专利权人地址： TW TAOYUAN
- 优先权： TWTW95128604 20060804
- 主分类号： H01J13/32
- IPC分类号： H01J13/32 ; H01J7/24
摘要：
Methods for cooling an illumination device are disclosed. The illumination device comprises a cathode, an anode and a cooling fan. A variation of a lamp voltage of the illumination device is first detected. The lamp voltage is the voltage difference between the cathode and the anode, and the variation of the lamp voltage is derived from comparing the lamp voltage which is detected with the lamp voltage at the first time the illumination device is used. A rotational rate of the cooling fan is then adjusted according to the variation of the lamp voltage.
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