FIG. 1 is a bottom perspective view of a lighting unit showing my new design;
FIG. 2 is an end view of the lighting unit of FIG. 1, the other end being a mirror image thereof;
FIGS. 3 and 4 are bottom and top views of the lighting unit of FIG. 1;
FIG. 5 is a generally longitudinal side view of the lighting unit of FIG. 1, the other longitudinal side being a mirror image thereof; and,
FIGS. 6 and 7 are upper perspective views of the lighting unit of FIG. 1.
The broken lines shown on the drawings are for illustrative purposes only and form no part of the claimed design.