The ornamental design for a lightingchain, as shown and described.
FIG. 1 is a perspective view of a lighting chain showing the new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a perspective view of a lighting chain shown in FIG. 1, with an enlarged view of a buckle component for illustrative purposes.
The broken lines showing in the drawings are included for the purpose of illustrating portions of the lighting chain and form no part of the claimed design.
The lighting chain is shown with symbolic breaks in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.