String Light Bulb

FIG. 1 is a perspective view of a string light bulb showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view thereof, shown in an environment of use.

The broken lines in the drawings depict portions of the string light bulb that form no part of the claimed design. The other broken lines shown in FIG. 9 illustrate environment and form no part of the claimed design.