The ornamental design for a lightingfixture, as shown and described.
FIG. 1 illustrates a bottom left perspective view of a lighting fixture;
FIG. 2 illustrates an exploded bottom left perspective view of the lighting fixture with a housing and a lighting portion shown disassembled;
FIG. 3 illustrates a top rear perspective view of the lighting fixture taken from above an unclaimed panel when the lighting fixture is installed;
FIG. 4 illustrates a front right view of the lighting fixture when installed in the unclaimed panel of FIG. 3, the front left view being a mirror image of FIG. 4;
FIG. 5 illustrates a top left perspective view of the housing of the lighting fixture, the top right view being a mirror image of FIG. 5;
FIG. 6 illustrates a top view of the lighting portion shown separately for clarity of illustration;
FIG. 7 illustrates a side view thereof; and,
FIG. 8 illustrates a bottom view thereof.
The shade lines in the drawings show contour and transparency, and not ornamentation. The broken lines show portions of the lighting fixture and environment and do not form part of the claimed design.