Safety helmet with anti-dazzle visor

A safety helmet comprising:

• an outer shell provided with a front opening,
• a related inner shell made of shock absorption material,
• at least one anti-dazzle visor connected to said outer shell and movable between at least one position of engagement with said front opening and at least one position of disengagement from said front opening, and
• an operating portion of said anti-dazzle visor, integral with said anti-dazzle visor, and controlled, through at least one motion transmission cable, by a control slider coupled slidingly to a related guide fastened to said outer shell,
• said control slider being translatable manually between an inactive position in which said anti-dazzle visor is arranged in said at least one position of disengagement and an active position in which said anti-dazzle visor is arranged in said at least one position of engagement, wherein said at least one motion transmission cable has one end integral with said outer shell and the other end integral with said control slider, and engages with at least one drive connected to said operating portion of said anti-dazzle visor, for movement of said anti-dazzle visor, said one end of said at least one motion transmission cable being fastened to said outer shell;
• wherein said at least one drive connected to said operating portion comprises a movable sheave, or a movable pulley, about which said at least one motion transmission cable is reeved, said movable sheave, or said movable pulley being movable with said operating portion relative to said shell.