Projection Lamp

FIG. 1 is a front perspective view of projection lamp, showing my new design; FIG. 2 is a rear perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top view thereof; and, FIG. 8 is a bottom view thereof. The broken lines in the drawings illustrate the portions of the projection lamp that form no part of the claimed design. The oblique line shading in the drawings depicts the transparent surfaces of the projection lamp.