Patent ID: 7952870

Claim:
A computer enclosure, comprising: a casing defining a ventilation hole at one side thereof; a power supply and a cooling fan received in the casing, wherein the power supply comprises a housing in which the cooling fan is received, the housing defining a plurality of holes corresponding to the cooling fan, heat generated by the power supply being taken out by an airflow generated by the cooling fan to an outside of the casing via the ventilation hole; and at least one cover sheet covering the ventilation hole of the casing, one side of the cover sheet being pivotally connected to the casing so that the cover sheet is rotatable with respect to the casing, wherein when the cooling fan works, an airflow produced by the cooling fan flows to the ventilation hole and pushes the at least one cover sheet to rotate with respect to the casing to cause the ventilation hole to be exposed; when the cooling fan ceases to work, the at least one cover sheet falls off due to a weight thereof and the cover sheet covers the ventilation hole.