The ornamental design for a plug-in induction device for illumination, as shown and described.
FIG. 1 is a perspective view of a plug-in induction device for illumination showing our new design.
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view for a usage state of a plug-in induction device for illumination being used on a LED lamp from a viewing angle; and,
FIG. 9 is a perspective view for a usage state of a plug-in induction device for illumination being used on a LED lamp from another viewing angle.
The broken lines in FIGS. 1-7 show portions of the invention that form no part of the claimed design. The broken lines in FIGS. 8 and 9 illustrate environment that form no part of the claimed design.