This sign has four core technical advantages. First, it adopts a dual power supply system: in normal conditions, it uses mains power to supply electricity, and when the mains power is cut off, the backup lithium battery automatically activates, providing continuous lighting for over 96 hours, which meets the NFPA 101 emergency evacuation standard requirements. Second, it uses UL 94 V-0 flame-retardant materials, which can withstand high temperatures of 800℃ without burning, preventing the spread of fire in tunnel fire scenarios. Third, the IP68 protection grade ensures that it can operate normally even when submerged in water, which is suitable for tunnels in flood-prone areas. Fourth, the high-efficiency SMD LED has a brightness of 1500 cd/m², which can penetrate thick smoke and be clearly seen from 500 meters away, guiding trapped personnel to the exit quickly. Additionally, its stainless steel backboard has excellent corrosion resistance, which can withstand the erosion of tunnel exhaust gas and moisture, with a service life of over 20 years.
The sign measures 700*700mm with a total thickness of 7mm, consisting of a 4mm 304 stainless steel backboard and a 0.3mm flame-retardant reflective film. The LED module consists of 48 high-efficiency SMD LEDs with a color temperature of 5500K, ensuring uniform light emission and no glare. The backup lithium battery has a capacity of 12V/36Ah, with a cycle life of over 3000 times, and can maintain 80% of its capacity after 10 years of use. The product has passed NFPA 101 emergency evacuation standard testing and CE certification, and its flame retardant grade reaches UL 94 V-0. It can withstand wind speeds of up to 150km/h and impact force of 800N without deformation. The installation bracket is made of stainless steel, which can be installed on the tunnel wall or ceiling, with a 0-30° angle adjustment function to adapt to different tunnel structures. The product also has an intelligent self-check function, which can automatically detect battery and LED performance and send an alarm signal when a fault occurs.
This product is essential for various tunnel scenarios. In highway long tunnels and mountain tunnels, it can be installed along the tunnel wall every 50 meters to provide continuous evacuation guidance for drivers and passengers in case of fires or traffic accidents. In urban underground tunnels and subway tunnels, it can be used as emergency exit signs, guiding trapped personnel to the nearest exit quickly. In underwater tunnels and flood-prone tunnels, its IP68 protection grade ensures normal operation even in flood scenarios, providing reliable evacuation guidance. It is also suitable for tunnel construction sites, where it can be used as temporary emergency evacuation signs to protect the safety of construction workers. Moreover, tunnel management departments can install it in batches to meet the national emergency safety standards and improve the emergency response capability of tunnels.
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