Abstract: Protecting helmet of the type including at least one inner shell made of a shock-absorbing material, the inner shell being covered with an outer shell on the outside and delimiting a front opening of the helmet, as well as at least one anti-dazzle visor constrained to the protecting helmet so that to rotate and/or translate with respect to the outer shell and to move between a lowered position interfering, at least partially, with such a front opening, and a raised position disengaging from the aforesaid front opening, and vice versa. Advantageously, the protecting helmet further includes an electric motor to operate the aforesaid anti-dazzle visor from its lowered position to its raised position, or vice versa, and an automatic control unit vocally operated to control the aforesaid motor.