The ornamental design for an iondistributiondevice, as shown and described herein.
FIG. 1 a front perspective view of the design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is an enlargement of a portion of FIG. 3;
FIG. 5 is an enlargement of a another portion of FIG. 3;
FIG. 6 is a right side view thereof;
FIG. 7 is an enlargement of a portion of FIG. 6;
FIG. 8 is a front view thereof;
FIG. 9 is a rear view thereof;
FIG. 10 is an enlargement of a portion of FIG. 9;
FIG. 11 is a top view thereof; and,
FIG. 12 is a bottom view thereof.
The small scale dash-dash broken lines illustrate portions of the ion distribution device that form no part of the claimed design. The large scale dash-dash broken line circles define the bounds of the enlargements and do not form part of the claimed design.