Patent Number: 7,613,002

Title: Heat dissipation device

Abstract: A heat dissipation device for a hard disk drive includes a first heat sink and a control circuit. The first heat sink includes an input interface, a counter unit, a controller unit, and an output unit. The input interface is used for receiving an input signal, which is determined by a temperature of the computer system. The counter unit is used for generating a high level signal on counting to a predetermined value. The controller unit is used for generating a switch signal on receiving the high level signal, and sending a clear signal to the counter unit for clearing the counter unit. The output unit is used for being switched on or off according to the switch signal, and sending a control signal to the first heat sink. The control signal is able to drive the cooling end of the first heat sink to cool down.

Inventors: Ye; Zhen-Xing (Shenzhen, CN), Chen; Xiao-Zhu (Fullerton, CA)

Assignee: Hong Fu Jin Precision Indsutry (ShenZhen) Co., Ltd.

International Classification: H05K 7/20 (20060101)

Expiration Date: 1/03/02017