I claim the ornamental design for a lighting fixture, as shown and described.
FIG. 1 is a front perspective view of the lighting fixture showing a first embodiment of the new design. This fixture has three-way one hundred twenty degree overall rotational symmetry and except for the three curved uprights, has six-way sixty degree overall rotational symmetry.
FIG. 2 is a front perspective view of the lighting fixture showing a second embodiment of the new design. This fixture has three-way one hundred twenty degree overall rotational symmetry and except for the three curved uprights, the three upper arms, and the structures that those three upper arms support, has six-way sixty degree overall rotational symmetry; and,
FIG. 3 is a front perspective view of the lighting fixture showing a third embodiment of the new design. This fixture has three-way one hundred twenty degree overall rotational symmetry and except for the three curved uprights, the three upper arms, and the structures that those three upper arms support, has six-way sixty degree overall rotational symmetry.
The broken lines shown on the drawings are for illustrative purposes only and form no part of the claimed design.