The ornamental design for a triangularlightingunit, as shown and described.
FIG. 1 is a perspective view of the right side and rear of the triangular lighting unit in accordance with the new design, showing a pole in dashed lines that supports the triangular lighting unit;
FIG. 2 is a perspective view of the left side and rear of the triangular lighting unit in accordance with the new design, showing a pole in dashed lines that supports the triangular lighting unit illustrated in FIG. 1;
FIG. 3 is a front elevational view of the triangular lighting unit illustrated in FIGS. 1–2;
FIG. 4 is a left side elevational view of the triangular lighting unit illustrated in FIGS. 1–3;
FIG. 5 is a right side elevational view of the triangular lighting unit illustrated in FIGS. 1–4;
FIG. 6 is a top plan view of the triangular lighting unit illustrated in FIGS. 1–5; and,
FIG. 7 is a bottom plan view of the triangular lighting unit illustrated in FIGS. 1–6.
The dashed lines shown on the drawings are for illustrative purposes only and form no part of the claimed design.