The ornamental design for a tracklightingfixture with heat dissipating fins, as shown and described.
FIG. 1 is an isometric top/side view of the track lighting fixture with heat dissipating fins embodying my new design.
FIG. 2 is a right side view of the design shown in FIG. 1, with the lamp head shown aligned with the base.
FIG. 3 is a top view thereof.
FIG. 4 is a front elevational view thereof.
FIG. 5 is a left side view thereof.
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a rear elevational view thereof.
The broken line showing of six circular features on the interior of the lamp head illustrate unclaimed portions of the article and form no part of the claimed design.