PROPELLER FAN

A propeller fan includes a hub (11) including a side surface (11a) around a center axis (O), and a plurality of blades disposed on the side surface of the hub. An inner peripheral blade, which extends from the side surface of the hub toward an outer edge side, is formed on a positive pressure surface of a blade surface part at an inner peripheral part of each of the blades. The inner peripheral blade projects from the positive pressure surface of the blade surface part toward a positive pressure side, includes a front edge (15a-F) in a rotation direction (R) of the inner peripheral blade that is formed in a curved shape to be separated from a reference line (S1) toward the front edge side in the rotation direction of the blade, the reference line connecting a lower end (E3) positioned on the positive pressure surface at a base end of the inner peripheral blade connected to the side surface of the hub with an outer edge (E1) of the inner peripheral blade that is extended from the side surface toward an outer edge side of the blade and positioned on the positive pressure surface, and satisfies H/L ≥ 0.1, where L is a length of the reference line and H is a maximum value of a distance between the reference line and the front edge of the inner peripheral blade.