The ornamental design for an ledlightbulb, as shown and described.
FIG. 1 is a perspective view an LED light bulb showing our new design.
FIG. 2 is a front view thereof.
FIG. 3 is a rear view thereof.
FIG. 4 is a left side view thereof.
FIG. 5 is a right side view thereof.
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines shown herein are for illustrative purposes only and form no part of the claimed design.
It is understood that the appearance of any part of the article ordinarily visible through the light guide or through the central opening in the top end cap and not shown in the drawing or described in the specification forms no part of the claimed design.