The ornamental design for LED lamp, as shown and described herein.
FIG. 1 is a perspective view of the lamp.
FIG. 2 is a first side elevational view of the lamp, the first side elevational view from an opposite side of the lamp being the same.
FIG. 3 is a second side elevational view of the lamp, the second side elevational view from an opposite side of the lamp being the same.
FIG. 4 is a top plan view of the lamp; and,
FIG. 5 is a bottom view of the lamp.
Any broken lines on the drawings depict portions of the lamp that form no part of the claimed design. Contour lines shown in the drawings are intended to represent the approximate three-dimensional contours of the design, and are not intended to indicate surface decoration. References to “side”, “top”, and “bottom” in the figure descriptions are not meant to require certain in-use orientation; a lamp according to the claimed design may be used in any orientation.