Cooling fan using surface cooling effect for rotating fan blade part

The present invention relates to a cooling fan including a cooling device that transfers heat from a heat source directly to a rotating fan blade and implements direct cooling through convective contact between the surface of a rotating fan blade and the air in the atmosphere, without fixed heat dissipating fins. The present invention is characterized by being configured of a cooling fan using a surface cooling effect for a rotating fan blade part, which is characterized by comprising: a heat source part; a heat dissipating plate part installed on the heat source part; a coolant circulating pipe part for moving a coolant in a heat dissipating plate when the heat dissipating plate part uses the coolant to dissipate heat; a rotating fan blade part configured at a position at which the coolant flows in order to forcibly cool the coolant; and a driving part for rotating the rotating fan blade part.