Helmet comprising retractable visors for fast day/night reconfiguration

A helmet comprising retractable visors for fast day/night reconfiguration, comprising:

• a shell including a saggital guide rail with a central opening:
• a night vision module and a retractable visor in front of the night vision module, a day visor and the night module being interchangeable rapidly and without tools and comprising an upper central part collaborating with said guide rail and lateral arms, each symmetrically equipped with an articulation to the shell of the helmet that can be disassembled without tools and in that each of said articulations about a common rotation axis comprises a first part secured to the shell, comprising at least one guide boss for guidance in a predetermined direction perpendicular to said rotation axis and an outer peripheral channel and a second part secured to the arm comprising at least one locking lever articulated in said second part to be immobilized in said channel.