| 摘要 |
<p>A multicouloured display panel having filament bulbs consists of a plurality of electrically connected filament bulbs and is characterized in that it mainly comprises panels having groups (19) of three light sources (18) in the form of bulbs (9) with filters (4) of the three primary colours and located within a reflector unit (1) having a parabolic reflecting surface, said panel being provided with a pulsed air ventilation device. Said panel can be used as a display or direction sign.</p> |
