Seriously, have you ever noticed those hollow screens that look like art installations when you go to the mall? Last month I went to a newly opened shopping mall. Their hollow screen could actually change its pattern according to the flow of people. A child ran chasing the light and shadow and almost hit a pillar... Today I will show you the application of this black technology. I guarantee that you will become a half-expert after reading it!

What scenes require the use of hollow screens?

This thing is not just for the sake of looking good.​ ​Light transmittance and load-bearing capacity​ ​That's the key. Three places where it must be installed:

1. ​​glass curtain wall building​ ​: Ordinary LED screens will block the lighting, but the hollow structure can retain more than 75% of the light transmission and save the cost of dismantling and modifying the glass.
2. ​​Protection of ancient buildings​ ​: 0.8mm ultra-thin design can be directly attached to the wall of cultural relics, reducing the risk of damage by 90% compared with traditional bracket installation.
3. ​​high-altitude corridor​ ​: The hollow structure is 60% lighter than the solid screen and cannot be blown away by a Category 12 typhoon.

There is a counter-example worth mentioning: an airport installed a non-customized hollow screen, but the light-transmitting area of ​​the screen happened to block the escape indicator light, and the fire department fined it more than 200,000 yuan. So professional design is so important!

How to solve the trick in parameters

Don’t be fooled by sales, just stare at these three parameters to death:

• ​​Effective display area ≥82%​ ​: Use a tape measure to measure the proportion of bright area after power on. If it is insufficient, it must be cutting corners.
• ​​Minimum bending radius≤30cm​ ​: Requires on-site bending test, no lamp beads should fall off or circuits should be exposed
• ​​Pixel compensation technology​ ​: Use the flash of your mobile phone when the power is off. If there are black spots, it means that the arrangement of the lamp beads is unscientific.

I have seen ruthless buyers bring their own anemometers to inspect the goods - turn on the electric fan at the highest setting towards the screen. If the stand shakes too much, just return it. This trick is designed to deal with those suppliers who falsely advertise wind resistance levels!

The life and death line of installation and maintenance

Failure to properly install the hollow screen is more dangerous than uneasiness. Pay close attention to these links:

1. ​​Embedded parts depth​ ​: The concrete wall must be drilled into the concrete wall by more than 15cm, and the expansion bolts must be made of 304 stainless steel.
2. ​​line protection​ ​: Strong and weak electricity must be routed separately, and signal lines must be wrapped in double-layer metal shielding nets.
3. ​​emergency plan​ ​: Each unit must have an independent power-off switch to prevent local short circuits from causing chain failures.

Last year, an exhibition hall suffered a setback - it did not perform anti-static treatment. As a result, dust accumulated on the screen surface, causing a short circuit. The repair cost was enough to buy half a set of new equipment. Now smart people are asking suppliers to provide​ ​Static electricity dissipation test report​​！

Selection comparison table: How to match it in different scenarios

Special reminder: Projects used outdoors must require​ ​Thermal deformation test​ ​. In areas with large temperature differences, ordinary aluminum frames can expand with a 2cm gap in the summer, and rainwater can short-circuit in minutes!

Now you know why the price difference of some hollow screens is three times different? There are five or six patented designs for the lamp bead anti-falling structure alone. Remember to bring a laser rangefinder with you for your next inspection - if the flatness error between adjacent boxes exceeds 0.5mm, something will go wrong with this project sooner or later!

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