FIELD: physics.
SUBSTANCE: traffic sign and associated warning light alarm are described. The road sign or device comprises a temperature sensor that, at a predetermined temperature, turns on the illumination of, at least, one LED. This temperature can be associated with the ice formation. The LED (s) may flash to warn motorists of dangerous road conditions. A road sign or device uses simple components to increase reliability, especially when the device is subjected to high heat, such as when installing the device in a hot bituminous waterproofing. In addition, the device comprises a switching element that prevents rapid cycling on/off.
EFFECT: improving the device reliability.
19 cl, 11 dwg
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