The ornamental design for an L.E.D. track lamp assembly, as shown and described.
FIG. 1 is a top right perspective view of the L.E.D. track lamp assembly showing our new design;
FIG. 2 is a front elevational view;
FIG. 3 is a rear elevational view;
FIG. 4 is an left side elevational view, with the unshown right side elevational view being a mirror image thereof;
FIG. 5 is a top plan view; and
FIG. 6 is a bottom plan view; and,
FIG. 7 is a top right perspective view of the L.E.D. track lamp assembly in an alternate configuration with a second light source shown in broken lines.
The broken lines shown in the drawings illustrate unclaimed portions of the article and environmental structure, and form no part of the claimed design.