Slide projection appts. on trailer for road vehicle - incorporates screens in opposite walls for 90 deg. deflected back-projection achieving optimum use of wall area

摘要

Two slide projectors (28) are set up on anti-vibration mountings (32) with deflecting mirrors (40) which turn the beams through 90 deg. on to matt back-projection screens (24) let into opposite sidewalls (18) of the trailer (14). Opposite each screen (24), and in the rear wall, a window (26) can be covered by a vertical blind with upper and lower rollers (48,50). Current for the roller motors and projectors is supplied by batter-ies (54). USE/ADVANTAGE - Mobile advertising or open-air cinema presentation to small audiences. Two (or more) large projection surfaces are accommodated without interference in compact trailer.