Patent ID: 8409338

Claim:
A cooling system, comprising: a filter member; a dust collecting member configured to separate and collect dust remained in air passed through the filter member by increasing flow resistance of the air passed through the filter member; a cooling fan configured to blow air passed through the dust collecting member toward a cooling object; and a guide duct comprising: an air inlet with the filter member mounted thereto configured to draw external air; a dust collecting portion comprising the dust collecting member; and a guide portion configured to guide the air passed through the dust collecting portion toward the cooling fan, wherein the dust collecting member comprises: an air supply hole configured to introduce the air drawn through the air inlet, a curved passage collecting dust in the air passed through the supply hole by gravity or friction with an inside surface of the dust collecting member, and a discharge hole configured to discharge the air toward the guide portion after the air drawn through the air inlet flows along the curved passage.