The ornamental design for a ledlightbar, as shown and described.
FIG. 1 is a top front perspective view of a LED light bar, showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevation view thereof, the rear elevation view being a mirror image thereof;
FIG. 5 is a left side elevation view thereof, the right side elevation view being a mirror image thereof; and,
FIG. 6 is a section view of FIG. 1, taken along line 6-6.
The unequal-sized broken (dash-dot-dash) lines depict the bounds of the claimed design, while the remaining equal-sized broken (dash-dash) lines shown in the drawings depict portions of the LED light bar that form no part of the claimed design.