Outer rear mirror for trucks and motor vehicles in general including an automatic cleaning device

An outer rear mirror for trucks and motor vehicles in general, provided with an automatic cleaning device, comprises an electric motor (2) rotatively driving an endless worm (3), meshing with a gear wheel (4) rigid with an elliptical cross-section element (5) turning about a rotary shaft (6) in turn supporting a cam (7) member including a peripheral groove in which is engaged a drive bearing (8) coupled to a telescopic rod (9) sliding in a hollow cylinder (10), the outer rear mirror further including one or more mirror-like surface having different geometrical-optical characteristics, and a rear frame having a metal flange clamping member.