Protection helmet for use by military, police or firemen

摘要

The protection helmet (1) comprises an outer spherical shell (2) constituted from two half shells able to pivot relative to each other about and axis (XX'). The outer shell comprises an upper wall portion (5) extended downwards by side wall portions (7). The front upper wall portion (4) corresponds to the zone occupied by the user's forehead whilst the upper rear wall portion corresponds to the zone occupied by the user's cranium. The lower rear wall portion (6) corresponds to the zone occupied by the nape of the user's neck.