The ornamental design for a lighting apparatus, as shown and described.
FIG. 1 is a top perspective view of a lighting apparatus showing our new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a side view thereof;
FIG. 6 is a second side view thereof; and,
FIG. 7 is a top view thereof.
The broken lines in the Figures are for the purpose of illustrating unclaimed portions of the lighting apparatus and form no part of the claimed design. The shade lines in the Figures show contour and not surface ornamentation.