DEVICE FOR PROJECTING IMAGES ON A SCREEN IN BRIDGE SPAN SPACE AND SCREEN FOR IMAGE PROJECTION Russian patent published in 2023 - IPC G03B21/585 

FIELD: projecting images on screens.

SUBSTANCE: device for projecting images on a screen in the space of the bridge span contains a base, made with the possibility of its installation under the carriageway of the span of the bridge; two lateral pneumatic hoses mounted vertically down the sides of the central part of the base, in the lower part of these side pneumatic hoses communicate with the transverse pneumatic hose through check valves; a screen mounted in the space between said side and transverse sleeves; electric winches, made with the possibility of their installation under the superstructures of bridges, the ropes of which are fixed at the ends of the side pneumatic sleeves; a guide mounted on the base perpendicular to the screen, on which a carriage with a suspension for installing the projector is movably mounted; a pneumatic assembly configured to supply and bleed air from the internal cavity of the side sleeves. EFFECT: invention provides image projection on the screen under bridge spans under different wind load, with the possibility of ships passing under bridge spans.

5 cl, 4 dwg