The ornamental design for a ledlamp, as described.
FIG. 1 is a back perspective view of a LED lamp, showing our new design;
FIG. 2 is front perspective view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a back plan view thereof; and,
FIG. 8 is a front plan view thereof.
The broken line illustrations of environmental and other structures in the drawings are not part of the design sought to be patented. The shade lines in the drawings show contour and not surface ornamentation.