The ornamental design for a downlightlightingfixture, as shown and described.
FIG. 1 is a top front perspective view of the downlight lighting fixture;
FIG. 2 is a bottom front perspective view of the downlight lighting fixture;
FIG. 3 is a front elevation of FIG. 1;
FIG. 4 is a back elevation of FIG. 1;
FIG. 5 is a right side elevation of FIG. 1;
FIG. 6 is a left side elevation of FIG. 1;
FIG. 7 is a top plan view of FIG. 1; and,
FIG. 8 is a bottom plan view of FIG. 1.
The broken lines shown in the drawings of FIGS. 1, 3-8 illustrating unclaimed portions of a knuckle of the downlight lighting fixture form no part of the claimed design.
The broken lines shown in the drawings of FIGS. 2, 3, 5, 6, 8 illustrating unclaimed portions of a vent of the downlight lighting fixture form no part of the claimed design.