The ornamental design for a thermo-electrical cooler, as shown and described.
FIG. 1 is a front view of a thermo-electrical cooler embodying my design while open;
FIG. 2 is a front elevational view thereof while closed;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left elevational view thereof;
FIG. 5 is a right elevational view thereof; and,
FIG. 6 is a top view thereof.
The present invention relates to a new design of a thermo-electrical cooler, which has an attractive outer appearance and a streamlined profile that fit the requirement for a new design.