发明名称 Toll booth signalling light for motorway - uses stacked lights to show toll rates with lamps flashed on and off at rate imperceptible to eye
摘要 A lamp consists of a toroidal tube which is fitted inside a concave reflector so that it can be seen from any direction. A transparent wall, in the shape of a cylinder, is placed over the lamp. The wall will eventually have information on it. Two or more lamps are stacked together vertically and held by an external case. The lamps are flashed on and off at such a rate as to present an impression of-permanence to the eye. ADVANTAGE - Brighter than incandescent or fluorescent lamps and compact support structure.
申请公布号 FR2628241(A1) 申请公布日期 1989.09.08
申请号 FR19880002657 申请日期 1988.03.02
申请人 LIAISONS ELECTRIQUES STE INDLE 发明人 ROBERT LECHAU
分类号 F21S8/00;G08G1/095 主分类号 F21S8/00
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