Have you ever noticed that some large LED screens on the street are so bright that they are dazzling, while others look like they are covered with a layer of dust? In fact, if you choose the wrong installation location, no matter how good the screen is, it will be in vain. Today we will talk about which places are really not suitable for installing outdoor LED advertising screens.

​​▍Areas prohibited by laws and regulations​​
Let me tell you a true story first: last year, a shopping mall installed a large screen within 50 meters of an intersection, but it was demolished by the urban management within three days. According to the "Technical Specifications for Urban Outdoor Advertising Settings", these locations are untouchable:

• ​​30 meters around traffic lights​ ​(Drivers are easily distracted)
• ​​15 meters on both sides of the main entrance of primary and secondary schools​ ​(Affect students’ attention)
• ​​Historic building protection scope​ ​(Destroys the overall appearance)

There is a little trivia:​ ​The brightness of the LED screen at night exceeds 50cd/m², which is considered light pollution​ ​, which is a strict rule in the management regulations of many cities. For screens installed around residential areas, it is best to choose ones with intelligent dimming function, which can automatically reduce the brightness to the required level according to the environment.

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​​▍Environmentally sensitive and high-risk areas​​
• ​​Below the high voltage power tower​ ​: Electromagnetic interference will cause snowflakes to appear on the screen
• ​​Around the chemical park​ ​: Corrosive gases will accelerate the aging of lamp beads
• ​​River flood discharge area​ ​: No matter how high the waterproof level is, it cannot withstand the impact of floods.

The most outrageous case I have seen is that a hot pot restaurant installed a screen above the smoke exhaust vent, and as a result, color patches appeared in half a year. Later tests revealed that the acidic substances in the oil fume had corroded the PCB board. So​ ​Environmental testing report before installation​ ​Absolutely no skimping, especially on indicators such as PM2.5 and pH.

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​​▍Areas with substandard technical conditions​​

1. ​​Areas with unstable power supply​ ​: Voltage fluctuations exceeding ±10% must be equipped with a voltage stabilizing device
2. ​​Structural load-bearing weak areas​ ​: Screen weight per square meter + wind load > building load direct pass
3. ​​Signal dead zone​ ​: If the 5G/WIFI signal strength is <-85dBm, don’t even think about playing interactive ads.

Last month, I helped a friend look at the venue and ran into a pitfall: I wanted to install a circular screen in the mall atrium, but the load-bearing beam could only support 800kg/m², and the P4 screen with a steel frame was too heavy. Finally changed​ ​Lightweight magnesium alloy cabinet​ ​It was solved that this special material is more than 40% lighter than traditional structures.

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​​▍Maintain the critical dead zone​​
Q: Why do some screens become "spotted dogs" after half a year?
A: Most of them are installed in narrow alleys where maintenance vehicles cannot enter, and dust removal and maintenance cannot keep up.

Q: Is it really a problem to install at high altitude?
A: Required for those over 20 meters tall​ ​vertical access channel​ ​, I have seen maintenance using hanging baskets, and the average cost per time is enough to buy new modules.

The most embarrassing thing is the screen installed outside the glass curtain wall, which can only be repaired by dismantling the curtain wall. So be sure to ask clearly before signing the contract.​ ​Routine maintenance plan​ ​, including spare module reserve and fault response time.

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The editor says something from the bottom of his heart: If the location is wrong, millions of dollars of equipment will be wasted. Remember to bring three things with you when choosing a spot next time - an environmental detector, a load-bearing calculation sheet, and an approval receipt from the Urban Management Bureau. Those who pat their chests and say "pretend first and then supplement the certificate" should be blocked as soon as possible!

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