DEVICE FOR DRIVING A LARGE DIMENSION FILM, IN PARTICULAR ADVERTISING POSTERS SUPPORTED BY AN UNWINDING STRIP, SCREEN AND ADVERTISING VEHICLE COMPRISING SAME

摘要

The invention concerns a device for driving a large dimension film, in particular advertising posters supported by an unwinding strip, between a drive roll (29) and a receiving roll (30), only one of the rolls is driven by an electric motor, the other being driven by coupling means including a flange connected to the motor roll, said flange driving the second roll via a spring.