FIG. 1 is a front isometric view of a vehicle exterior sun visor showing my new design it being understood that the broken lines are for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a rear isometric view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a side elevation view thereof;

FIG. 8 is a rear isometric view of a vehicle exterior sun visor showing a second embodiment of my new design the sole difference being in the number and shape of apertures in the rear wall; and,

FIG. 9 is a rear isometric view of a vehicle exterior sun visor showing a third embodiment of my new design the sole difference being in the number and shape of apertures in the rear wall.