Improved base of radiation fan

The utility model relates to an improved base seat of a casing body of a radiation fan, which is composed of a base seat, a motor and a blade body, wherein, one side of the base seat is provided with a bracket, and the motor is arranged in the center of the bracket; the blade body is axially connected with the motor and can be rotated, and a wind guiding inlet and a wind discharging outlet on the circumference of openings which are arranged on both sides of a containing room of the base seat are expanded slantways and outwards, so large wind quantity can be sucked. Because the wind guiding inlet and the wind discharging outlet on the circumference of the openings which are arranged on both sides of the containing room of the base seat are expanded slantways and outwards, wind inlet quantity sucked by the wind guiding inlet and wind inlet quantity discharged by the wind discharging outlet are large, and relatively, wind quantity can be successfully guided via sloping sides of the wind guiding inlet and the wind discharging outlet, so the purposes that temperature lowering and cooling are achieved.