Safety helmet

[0001]FIG. 1 is a front, left-side, top perspective view of a safety helmet, showing the new design;

[0002]FIG. 2 is a front elevational view thereof;

[0003]FIG. 3 is a rear elevational view thereof;

[0004]FIG. 4 is a left-side elevational view thereof, the right-side elevational view (not provided) being a mirror image of the left-side elevational view;

[0005]FIG. 5 is a top plan view thereof; and,

[0006]FIG. 6 is a bottom plan view thereof.

[0007]The broken lines depict parts of the safety helmet that form no part of the claimed design.