I claim, the ornamental design for an LED light box, as shown and described.
FIG. 1 is a front elevation view of an LED light box showing my new design.
FIG. 2 is a side elevation view, the left and right sides being mirror images of one another.
FIG. 3 is top plan view.
FIG. 4 is a bottom plan view.
FIG. 5 is a front elevation view of an alternate embodiment of the LED light box; and,
FIG. 6 is a front elevation view of an embodiment of the LED light box.
The broken lines shown in the drawings indicate environmental structure or boundaries that form no part of the design.
The break lines in FIG. 6 indicate that the appearance of any portion of the LED light box between the break lines forms no part of the claimed design.