FIG. 1 is an isometric view of a top, front, and right side of a right-handed version of an ornamental design for a lighting device;
FIG. 2 is a front elevational view of the lighting device of FIG. 1;
FIG. 3 is a rear elevational view of the lighting device of FIG. 1;
FIG. 4 is a left side elevational view of the lighting device of FIG. 1;
FIG. 5 is a right side elevational view of the lighting device of FIG. 1;
FIG. 6 is a top plan view of the lighting device of FIG. 1;
FIG. 7 is a bottom plan view of the lighting device of FIG. 1;
FIG. 8 is an isometric view of a top, front, and left side of a left-handed version of an ornamental design for a lighting device;
FIG. 9 is a front elevational view of the lighting device of FIG. 8;
FIG. 10 is a rear elevational view of the lighting device of FIG. 8;
FIG. 11 is a left side elevational view of the lighting device of FIG. 8;
FIG. 12 is a right side elevational view of the lighting device of FIG. 8;
FIG. 13 is a top plan view of the lighting device of FIG. 8; and,
FIG. 14 is a bottom plan view of the lighting device of FIG. 8.
The dash-dash-dash broken lines are included for the purpose of illustrating portions of the lighting device that form no part of the claimed design. FIGS. 3, 7, 10, and 14 form no part of the claimed design.