The ornamental design for a ledbulb, as shown and described.
FIG. 1 is a perspective view of a LED bulb;
FIG. 2 is a front view of the LED bulb depicted in FIG. 1;
FIG. 3 is a left side view of the LED bulb depicted in FIG. 1;
FIG. 4 is a top view of the LED bulb depicted in FIG. 1; and,
FIG. 5 is a bottom view of the LED bulb depicted in FIG. 1.
In the black-and-white line drawings of this embodiment, the rear view is a mirror image of the front view and thus is omitted, and the right side view is a mirror image of the left side view and thus is omitted.
The broken lines showing in the figures are for illustrative purposes only and form no part of the claimed design.