Last week, I helped Lao Zhang, who runs a milk tea shop, look for a display screen. He insisted on installing an advertising screen in the subway station passage, but he spent three days trying to find a suitable location. This thing made me suddenly realize:​ ​The location of those seemingly random LED screens in the subway is much more delicate than finding a shop.​​！

The golden spot hidden under your nose

The LED screens in subway stations are like hide-and-seek masters,​ ​Four must-check areas​ ​You have to remember:

1. ​​45 degree angle above the entrance and exit gates​ ​(The location where 92% of passengers look up)
2. ​​3 meters from the corner of the transfer channel​ ​(Forced visual stay area)
3. ​​The fourth pillar in the platform waiting area​ ​(The average gaze duration exceeds 15 seconds)
4. ​​Blind spot at the top of the escalator​ ​(Using the human body’s natural habit of looking up)

Last year, a beverage brand tried to install three screens in the transfer channel. Monitoring data showed that the click rate of the screen installed 3 meters around the corner was three times higher than that of other locations. This is an experience that comes from spending real money!

The secret weapon for millimeter-level positioning

Do you think you can get the positioning done with a tape measure? Used by professional teams​ ​Laser 3D modeling​ ​. By scanning the three-dimensional structure of the subway station, the system can automatically recommend installation coordinates.​ ​Positioning error reduced from ±15cm of manual measurement to ±5mm​ ​. A certain chain brand used this method to directly double its advertising conversion rate in a single month.

For example: the screen at the escalator entrance should be installed 2.3 meters above the ground. This height can avoid the heads of passengers and is just at the natural point of sight. Actual measurement data from a station in Tokyo last year: the memorability of ads at this height is 58% higher than regular installations.

Hidden time cost account

It takes at least 45 days to run the installation process yourself, and involves 12 links from approval to power on. Find a professional service provider​ ​Compressed to 20 days​ ​, the secret is:

• Pre-stored 38 types of subway station structural drawings
• Prepared 13 types of special installation qualifications
• Adopt quick disassembly and assembly technology

Last year, a cosmetics brand in Seoul suffered a loss due to its inexperience. The approval materials were rejected three times, and it missed the Christmas promotion season and lost millions. This is much more expensive than the screen itself!

Guide to Preventing Pitfalls: Three Do’s and Three Don’ts

Friends who want to install a subway screen remember:
✅ ​​Choose a box with IP65 protection level​ ​(Coping with the humid environment of subway stations)
✅ ​​With intelligent brightness adjustment function​ ​(5000nit during the day and automatically adjusted to 800nit at night)
✅ ​​Includes remote control system​ ​(Change advertising content at any time)

Never:
❌ Choose non-standard sizes for cheap (later modification costs can buy a new screen)
❌ Ignore the heat dissipation design (poor ventilation in subway stations may cause lights to die)
❌ Eliminate earthquake resistance testing (the vibration of a passing train is comparable to a magnitude 3 earthquake)

The editor’s final comment: some manufacturers can now do this​ ​Rapid deployment of subway advertising screens in 7 days​ ​, with full visual tracking from solution design to power-on debugging. Those large manufacturers with a monthly output of 10,000 square meters hold the installation data models of dozens of subway stations. Next time you want to install a screen, remember to get a copy of the "Subway Space Light and Shadow Analysis Report" first. This thing is much more reliable than site selection software!

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