VARIABLE MESSAGE SIGNS based on the Light-Emitting Diodes

PURPOSE and ADVANTAGES Variable Message Signs (VMS) is intended for speed control of traffic of means of transport on highways. VMS appropriate to significances of speeds from 10 up to 190 km/hs with step 10 km/hs, switch by a pilot signal according to the protocol LON-TALK.

As light sources the light-emitting diodes red and white are used radiations distinguished from glow-discharge tubes and halide lamps much greater by durability (approximately a hundred times) and smaller power consumption (in four - nine times).
The electric circuit of the VMS excludes possibility of complete failure.
Antivandal fulfillment of the sign ensures his high stability at extreme rigid effects.
High reability of the VMS on a LED augments safety of the participants of road traffic.

CONSTRUCTION

The signals of VMS are realized in one body.
Tight body from glasscompozit, protective glass - from polycarbonate. Colour of a body - grey.
The sizes of a light hole - 700 x 700 mms.
The power supply: AC U=220/110/36 V, f=50/60 Hz, DC U=12, 24 or 36 V.
A mass of the VMS - no more than 20 kg.
Rough overall dimensions: 860C 960X80 mms.

TECHNICAL СHARACTERISTICS

Axial light intensity of the VMS - not less than 240 candelas.
Double angle of divergence of radiation on a level 0,5 axial light intensitys of a traffic light - not less than 20 degrees.
The coordinates of a chrominance of radiation of signals of the VMS correspond to the Russian and international standards and compound: a red signal - Х=0,71± 0,02, Y=0,29± 0,03; a white signal - X=0,31±0,02, Y = 0,31±0,02.
Average power consumption - 20 W.
Mean life of Signals - 10 years, warranty period of a storage and operation - 5 years.
Storage and operating temperature range: - 40…+ 60 grades of Celcius. The VMS are resistant to high humidity, solar radiation, hoar-frost, corrosion-active agents, wind load (the wind speed up to 150 km/hs).
The VMS' protection standard - IP 54.