Luminaire Joint

FIG. 1 is a bottom perspective view of the luminaire joint; FIG. 2 is a top perspective view thereof; FIG. 3 is a left elevation view thereof; FIG. 4 is a right elevation view thereof; FIG. 5 is a top view thereof; FIG. 6 is a bottom view thereof; FIG. 7 is a rear elevation view thereof; and, FIG. 8 is a front elevation view thereof. The broken lines in FIGS. 1 - 8 represent portions of the luminaire joint and environment that form no part of the claimed design.