Liverpool Tries Strip Lighting for Bus Advertisements
Page 53
If you've noticed an error in this article please click here to report it so we can fix it.
A DVERTISEMENT panels illuminated by fluorescent tubes are being installed on the off side of Liverpool Corporation double-deckers. The system offers increased light output for a given drain on the battery, long lamp-life, even distribution of illumination and resistance to vibration. The panel consists of toughened glass sheet covering four bays. The advertisement is painted by the silk-screen process on the inside of the glass, and is well defined in daylight.
Illumination is provided by eight 30-W. 11-in.-diameter tubes at the top and bottom of the panel. Philips transistorized D.C. to A.C. converters provide the necessary voltage. The transistor units are mounted in a steel cabinet adjacent to the front destination indicator box and a safety device protects the transistors from reverse polarities.