Expressway guidance screen

The traffic guidance screen is used to display road information and important notices, and prompt the driver of the road conditions in front and nearby. It is the display board of smart city.
Traffic guidance screen can be divided into Expressway guidance and urban guidance,
Expressway speed is fast, prompt information must be in hundreds of meters away can clearly see, text content requirements are simple, font to be large, but also through the fog, so the brightness requirement is more than 8000CD / m2, and because the maintenance cost is high, so the requirement of reliability is high, generally using independent monitoring system, to the command center prompt their working state, if there is a fault, need to check To upload the specific fault location and cause. Adopt the cooling system without fan (the fan will be blocked by dust, so it is not able to heat). Generally, it is recommended to use the lamp with gap above P10 and dip package. The power supply requires 10000 hours of uninterrupted operation.