Lighting device

FIG. 1 is a front perspective view of the design with the headstrap attached;

FIG. 2 is a front perspective view of the design;

FIG. 3 is a rear perspective view of the design;

FIG. 4 is a right side view of the design, the left side view of the design is a mirror image of the right side view;

FIG. 5 is a front view of the design;

FIG. 6 is a back view of the design;

FIG. 7 is a top view of the design; and,

FIG. 8 is a bottom view of the design.

The broken lines immediately adjacent to the shaded areas represent the boundaries of the claimed design. None of the broken lines form part of the claimed design. The broken line showing of the strap detail in FIG. 1 represents environment. The broken line showing represents portions of the article not claimed and forms no part of the claimed design.