The ornamental design for a lighting apparatus, as shown and described.
FIG. 1 is a left side perspective view of a lighting apparatus showing my new design;
FIG. 2 is a right side perspective view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a front elevational view of the lighting apparatus with the stem portion of the lamp adjusted to permit a change in position of the lamp head to a 90 degree angle;
FIG. 5 is a top perspective view thereof;
FIG. 6 is a top plan view with the stem portion of the lamp adjusted to permit a change in position of the lamp head to a downward angle;
FIG. 7 is an exploded view of the lighting apparatus, showing a top plan view of the base portion showing the receptacle formed in the base which receives the clip portion of the lighting apparatus and a right side perspective view of the light and clip portion of the lighting apparatus disconnected from the base;
FIG. 8 is a rear perspective view of the light and clip portion thereof;
FIG. 9 is a right side perspective view thereof;
FIG. 10 is a left side perspective view thereof shown in a condition of use; and,
FIG. 11 is a left side perspective view thereof shown in a condition of use.