| 摘要 |
Advertising or information displays can be shown on screens ( 10, 11 ) provided on walls of a van-bodied road vehicle. The displays comprise video or still images back projected onto the screens from projectors ( 13 ) located within the vehicle body ( 1 ). The projectors ( 13 ) have control units ( 13 a) with stored digital image data connected to a local computer unit ( 14 ) which operates the projectors. The computer units ( 14 ) of different vehicles are connected by wireless links to a central management server ( 22 ) which controls operation.
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