Propeller fan, blower and an outdoor unit

Propeller fan 1 includes a boss 3, and a plurality of vanes 5, each of the plurality of blades, the pressure surface 13, suction surface 15 and a pressure side connection portion between the side surface of the pressure surface and the boss and boundary portions 17p, when the connecting portion between the side surface of the negative pressure surface and the boss and the suction side boundary portion 17s, towards the curvature of the suction side boundary portion is smaller than the curvature of the pressure side boundary portion, the rotation shaft There relates wing area projected on a plane perpendicular, towards the wing area of ​​the negative pressure surface is greater than the wing area of ​​the pressure surface.