Projection cooling apparatus

Details Projection cooling apparatus Projection cooling apparatus

2006-03-28

2006-03-28

Mahoney, Christopher (Department: 2851)

Optics: image projectors

Temperature control

Blower

C353S060000

Reexamination Certificate

active

07018049

ABSTRACT:
A projection cooling apparatus comprises a first cooling path and a second cooling path. The first cooling path includes a temperature sensor and an exhaust fan respectively installed in an inlet and an outlet of the first cooling path. The second cooling path includes a temperature sensor, a power supply unit, and a guiding fan. According to the detecting temperature resulted from the change of power supply and the environmental temperature, the temperature sensors of the first and second cooling path control the rotational speed of two sets of the fans to reach the best cooling effect, reduce the noises and extend the lifetime of the fan.

REFERENCES:
patent: 6364492 (2002-04-01), Fujimori et al.
patent: 6402324 (2002-06-01), Kuroda et al.
patent: 6419364 (2002-07-01), Takizawa et al.
patent: 6637895 (2003-10-01), Fujimori et al.

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