FIG. 1 is a front perspective view of the lighting device. FIG. 2 is a front view of the lighting device. FIG. 3 is a rear view of the lighting device. FIG. 4 is a right side view of the lighting device. The left side view is a mirror image of the right side view. FIG. 5 is a top view of the lighting device; and, FIG. 6 is a bottom view of the lighting device. Any broken line(s) shown are for illustrative purposes only and form no part of the claimed design.