Patent ID: 7929302

Claim:
A cooling device for cooling a heat generating element of an electronic device, the electronic device comprising a housing defining an opening, the cooling device comprising: a shell bounding a heat exchanging space and to abut against the heat generating element via the opening, wherein an air intake and an air outlet are defined in a portion of the shell located outside the housing; a plurality of fins extending from the shell into the heat exchanging space; and a fan mounted to the shell to provide airflow; wherein the shell guides the airflow to enter into the shell through the air intake, to pass through the heat exchanging space, and to exit from the shell through the air outlet; the shell comprises a top board, a bottom board opposite to the top board, and a side board connected between the top board and the bottom board, wherein the bottom board is to abut against the heat generating element; and the cooling device further comprises at least one valve defined in the side board, wherein the at least one valve is formed in a portion of the shell located inside the housing.