Impeller and axial fan

An impeller comprising:

• a body portion to rotate about a center axis extending in an axial direction;
• and
• blades that protrude in a radial direction from an outer circumferential surface of the body portion and are located at intervals in a circumferential direction;
• wherein
• the impeller is configured to generate a wind flowing in the axial direction due to the blades rotating around the center axis;
• in at least one cross section of at least one of the blades, including the center axis and extending in the radial direction, a width in the axial direction increases and then decreases from radially inner toward radially outer;
• an edge on one side in the axial direction in the cross section has a convex shape protruding to the one side in the axial direction with the one side in the axial direction as an intake side;
• and
• the cross section intersects a radially inner edge of the at least one of the blades when viewed in the axial direction.