| 摘要 |
FIELD: advertising by means of display devices. SUBSTANCE: device has frame mounting on its plane-parallel axles data entries in the form of a number of swivel prisms, shaft with drive, prism operating mechanism incorporating disks with end projections and radial slots, sprockets with as many arms as there are faces on swivel prisms whose rays are alternately engaging radial slots of disks ; sprockets are installed on ends of data entry axles on drive end of shaft and ends of their arms have double-ended side bevels. End projections of disks are shifted through certain angle from radial slots of disks and mounted on their periphery for alternate contact with bevels on ends of sprocket arms, closest bevels on ends of adjacent sprocket arms being disposed in same plane for locking prism in position during information display; shaft axis is shifted from data entries in plane orthogonal to plane of their axes and is parallel to the latter plane. EFFECT: simplified design, enhanced reliability. 5 cl, 8 dwg
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