FIG. 1 is a front view of a first embodiment of a straight-tube UV light, showing our design;
FIG. 2 is a rear view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a front-left perspective view thereof; and,
FIG. 8 is a rear-left perspective view thereof.
The broken lines shown in the drawings represent portions of the straight-tube UV light that form no part of the claimed design.