A conventional propeller fan has a gap between a bellmouth and blade edges, and there occurs a leakage flow flowing through the gap from positive pressure surfaces of the blades toward negative pressure surfaces of the blades. The leakage flow grows as it flows from the front edge to the rear edge of each blade and forms blade edge vortices. This increases blowing noise and motor input. In order to prevent an occurrence of blade edge vortices caused by such a leakage flow, a propeller fan of the invention has mountains and valleys alternately formed at an end surface of each blade.
