Projector having a controlled rechargeable cell and heat...

Details Projector having a controlled rechargeable cell and heat... Projector having a controlled rechargeable cell and heat...

2011-08-02

2011-08-02

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

C250S2140RC

Reexamination Certificate

active

07989747

ABSTRACT:
An exemplary projector includes a power supply circuit, a heat dissipation device, a rechargeable cell and a first switching circuit connected between the heat dissipation device and the rechargeable cell. The heat dissipation device is configured for dissipating heat produced by the projector. The power supply circuit is configured for powering the heat dissipation device. The rechargeable cell is configured for receiving and storing electrical power from the power supply circuit. The first switching circuit is configured for controlling the rechargeable cell to power the heat dissipation device when the power supply circuit stops powering the heat dissipation device. A related heat dissipation system is also provided.

REFERENCES:
patent: 6472828 (2002-10-01), Pruett et al.
patent: 6588907 (2003-07-01), Billington et al.
patent: 1570758 (2005-01-01), None
patent: 1873522 (2006-12-01), None
patent: 1928707 (2007-03-01), None

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