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The summer of 2025 has set heat records across China. Regions from North to South are enduring prolonged hot spells, with temperatures often above 35°C—and in cities like Liaocheng and Heze, peaking beyond 39°C. While the heat challenges daily life, it also places enormous stress on outdoor electronics. Among them, lamp pole screens—key components of smart city systems—are under heavy pressure to perform reliably.
Lamp pole screens are usually installed outdoors, directly exposed to sunlight. Their metal casings can climb to 80°C even when switched off. Once the LED chip’s junction temperature rises past 125°C, packaging materials may soften or deform, leading to breakdowns.
High heat accelerates light decay too: every 10°C increase cuts brightness by around 5%. Overheating driver ICs and fast-aging capacitors in power modules make the problem worse, shortening service life and raising maintenance needs.
To withstand rising heat, manufacturers are upgrading screen components. Military-grade resistors and capacitors now handle up to 110°C, while insulated wires function above 80°C.
In Quzhou’s Shuitingmen Scenic Area, P3 high-density LED modules use flame-retardant PC plus glass-fiber masks and shells. These materials maintain form and performance even under prolonged sun exposure, extending product lifespan in harsh weather by more than 30%.
Technology plays a key role in keeping lamp pole screens safe. Modern systems automatically turn on cooling fans once inside temperatures exceed 30°C. Brightness adjusts based on light sensors, preventing overheating during peak sunlight.
In Deyang, smart poles run on an IoT platform with dual-mode controls—linked to both time schedules and light conditions. During the hottest hours, brightness drops by 20%, while screens pause for 15 minutes every two hours to cool down. These upgrades have tripled the mean time between failures.
Cities are also taking proactive measures. Jiaxing, for example, launched a summer inspection campaign to tackle overheating risks and electrical leakage. More than 90 issues were solved within half a year.
With remote power-off and precise real-time monitoring, maintenance teams now locate faults with an error margin under one meter. This not only protects devices but also reduces service costs and downtime.
Today’s lamp pole screens are evolving from simple displays into multifunctional service platforms.
In Fuzhou, poles on Wanglong Road combine AI cameras, sensors, and edge computing. When flooding occurs, the screens issue instant alerts while activating the drainage system.
In Ordos, fog forest dust-reduction units installed on poles cut PM2.5 levels by 15% and cool the environment with high-pressure atomization.
Such functions highlight how smart poles contribute to safety, environmental management, and urban resilience.
Industry standards are catching up with climate realities. The 2025 General Technical Requirements for Outdoor Mini/Micro LED Displays require IP65 protection and stable operation from -20°C to 60°C. Products must pass 168-hour high-temperature, high-humidity aging tests to prove durability.
These rules are pushing manufacturers to raise quality and resilience, ensuring that products survive both scorching summers and freezing winters.
The fight lamp pole screens face against extreme heat mirrors a broader challenge: building infrastructure that can endure climate change. Through better materials, intelligent systems,proactive management, and strict standards, lamp pole screens are moving from fragile assets to robust, reliable smart city nodes.
Even during a heat wave, when they continue to deliver clear and stable content, these screens do more than inform—they embody a city’s resilience, innovation, and determination to face the future.
