Fan blade

FIG. 1 is an environmental perspective view of a fan blade showing my new design;

FIG. 2 is an enlarged bottom view thereof;

FIG. 3 is an enlarged rear end view thereof;

FIG. 4 is an enlarged right side view thereof;

FIG. 5 is an enlarged top view thereof;

FIG. 6 is an enlarged left side view thereof; and,

FIG. 7 is an enlarged front end view thereof.

The broken line showing of environmental structure in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.