The ornamental design for an emergencylight, as shown and described.
FIG. 1 is a top right perspective view of an emergency light showing our new design;
FIG. 2 is a top left perspective view thereof;
FIG. 3 is a bottom left perspective view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a back view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a left view thereof;
FIG. 9 is a right view thereof;
FIG. 10 is a top right perspective view of an emergency light with lights arranged in a different direction; and,
FIG. 11 is a front view thereof.
The broken line showing of the switch and input in FIGS. 2-8 and 11 is included for the purpose of showing environmental structure and forms no part of the claimed design.