The ornamental design for a lightingdevice, as shown and described.
The present design relates to a lighting device, having an ornamental, non-functional design resembling a handbag. The lighting device includes an aperture at a bottom face, through which light may pass.
FIG. 1 is a perspective view of a lighting device showing the design; and,
FIG. 2 is an elevation view of a lighting device showing the design.