Invention Grant
US07766519B2 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
- Patent Title: Illumination devices with cooling fans and cooling methods thereof
- Patent Title (中): 具有冷却风扇的照明装置及其冷却方法
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Application No.: US11778562Application Date: 2007-07-16
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Publication No.: US07766519B2Publication Date: 2010-08-03
- Inventor: Bang-Ji Wang
- Applicant: Bang-Ji Wang
- Applicant Address: TW Taoyuan County
- Assignee: Qisda Corporation
- Current Assignee: Qisda Corporation
- Current Assignee Address: TW Taoyuan County
- Priority: TW95128604A 20060804
- Main IPC: B60Q1/06
- IPC: B60Q1/06
Abstract:
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.
Public/Granted literature
- US20080030141A1 ILLUMINATION DEVICES WITH COOLING FANS AND COOLING METHODS THEREOF Public/Granted day:2008-02-07
Information query
