MULTIPURPOSE OPTICAL SIGNALLING DEVICE, PARTICULARLY FOR ROAD EMERGENCY IN LOW VISIBILITY CONDITIONS

摘要

A multi-purpose visual signaling device, particularly for road emergency warning and in low visibility conditions, comprises light-emitting means (3) for generating a light beam (4) and means (5) for supplying power to light-emitting means (3). The light-emitting means (3) include at least one laser projector (6) adapted to project images (7) over a substantially flat surface for such images to be visible from a relatively long distance. The light-emitting means (3) and the power supply means (5) are mounted to a stationary support structure (2) which may include a front warning triangle-defining portion (12). The laser projector (6) comprises at least one laser diode (8) and optical and/or electronic means (9) for generating images (7) in space or over a substantially flat surface. The optical and/or electronic means (9) comprise a diffractive lens (10). Images (7) include monochromatic, polychromatic and/or holographic images, possibly of variable configuration, and preferably form a triangular design.