The ornamental design for a ledballbulb with projecting inductor, as shown and described.
FIG. 1 is a front elevational view of a LED ball bulb with projecting inductor showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a bottom plan view thereof.
The rear elevational view, left side elevational view and right side elevational view thereof are omitted for they are the same with the front elevational view thereof.