Fan module having dust-collecting function and dust-collecting unit for the same

A dust-collecting unit installed on a case of an electronic equipment or a household appliance surrounding an inner space and eliminating a dust from an air flowing into the inner space, comprising:

• a housing having a rotation region therein and open portions at a front end and a rear end thereof, a side surface of the housing including one of a dust-collecting path and a dust-collecting hole;
• a dust-collecting box combined with the housing and communicating with one of the dust-collecting path and the dust-collecting hole;
• a guide wall combined with the housing without separation at a rear end of the rotation region and protruding toward a central axis along a longitudinal direction of the rotation region, the guide wall surrounding an air-discharge port disposed coaxially with the central axis of the rotation region;
• and
• a rotation inducing part combined with a front end of the rotation region and inducing the air to spirally rotate, the rotation inducing part including at least one air-suction port.

A cooling means, comprising:

• a heat radiating block that is combined with a central processing unit and receiving a heat of the central processing unit;
• a heat radiating fin that is connected to the heat radiating block and exhausts the heat of the heat radiating block to an exterior;
• and
• a fan module combined with the heat radiating fin,
• wherein the fan module comprises:
• a dust-collecting unit having a rotation region, at least one air-suction port and at least one air-discharge port, the at least one air-suction port and the at least one air-discharge port communicating with the rotation region;
• and
• a fan combined with the dust-collecting unit and inputting the air into the rotation region, and
• wherein the dust-collecting unit comprises:
• a housing having the rotation region therein and open portions at a front end and a rear end thereof, the open portions communicating with the rotation region;
• a rotation inducing part combined with a front end of the rotation region and inducing the air to spirally rotate, the rotation inducing part including the at least one air-suction port;
• a guide wall combined with the housing without separation at a rear end of the rotation region and protruding toward a central axis along a longitudinal direction of the rotation region, the guide wall surrounding the at least one air-discharge port disposed coaxially with the central axis of the rotation region;
• and
• a dust-collecting box combined with the housing and collecting a dust rotating in the rotation region through one of a dust-collecting path connected to the housing and a dust-collecting hole formed on the housing.