We claim the ornamental design for a parallelogram light bar fixture, as shown and described.
FIG. 1 is a top perspective view of a parallelogram light bar fixture, showing the new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front view thereof; and,
FIG. 7 is a back view thereof.
The broken line disclosure represents portions of the fixture which form no part of the claimed design. No claim is made to the areas between breaks lines shown.