The ornamental design for a portable emergencysignpocket, as shown and described.
FIG. 1 is a perspective view of a portable emergency sign pocket depicted in a closed state attached to a connector chain, showing my new design;
FIG. 2 is a front view of the portable emergency sign pocket depicted in an open state;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken line showing of connector chains in FIG. 1 and emergency indicia in FIGS. 1 and 2 is for the purpose of illustrating environment and forms no part of the claimed design.