FIG. 1 is a perspective view of an outdoor lighting structure showing a first embodiment of my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof, the rear elevation being the same;

FIG. 4 is a left side elevation view thereof, the right side elevation being the same;

FIG. 5 is a perspective view of the outdoor lighting structure showing a second embodiment of my new design;

FIG. 6 is a left side elevation view thereof, the right side elevation being the same;

FIG. 7 is a perspective view of the outdoor lighting structure showing a third embodiment of my new design; and,

FIG. 8 is a left side elevation view thereof, the right side elevation being the same.

The broken lines shown on the drawings are for illustrative purposes only and form no part of the claimed design.