Hey, do you often stare at those cool advertising screens in the mall? Those pixels that can dance, transparent windows that can interact, giant curtain walls that are even more shocking than cinemas... Where did these shopping mall LED displays come out? Today we will break it apart and talk about this.

1. There are many tricks in the procurement channel.

The most common question for beginners: Where should I buy this thing? There are three common ways on the market:

1. ​​Online wholesale platform​​: Suitable for buying standard size regular screens, such as P3 and P4 specifications. But it's very deep here - last year my friend bought a screen on a certain platform, with a nominal brightness of 5000cd/m². In fact, it can't even see the subtitles clearly at noon when I use it.
2. ​​Show the true chapter​​: You can find physical objects in professional exhibitions like Shenzhen Optical Expo. But you have to be careful. The prototypes on the booth are all "hardcover versions" with parameters adjusted, which may be of the same level as the "simplified version" that actually arrived.
3. ​​Find a manufacturer directly​​: It is necessary to have special shapes (such as curved screens) or special functions (floor tile screens with waterproof), and it is recommended to directly connect to the factory. Launched by a Shenzhen manufacturer​ ​Quick release box​​, 10 square meters can be disassembled and installed in five minutes, and rental companies love this one the most

Here is the key point:​​Don't be greedy for cheap​​! Some of the quotations are ridiculously low, and they may use second-hand lamp beads or counterfeit power supplies. Last month, a milk tea shop was cheap. The screen I bought was filled with "yin and yang faces" after three months of use. It was 20,000 yuan more expensive to repair than buying a new one.

2. Text games in the parameter table

The "highlight HD" in the merchant's mouth is all false, so identify these three hard indicators:

• ​​Brightness metaphysics​​: Indoor 800-1200cd/m² is the most practical, too bright and dazzling, too dark and has no sense of existence. Pay special attention to outdoor screens - a screen with a standard of 5000cd/m², the actual effective brightness under the sun may be 30% off.
• ​​Refresh rate mystery​​: Everyone says that I started at 1920Hz, so I will teach you a way to open the pure white screen and shoot it with my phone in slow motion. If you see flashes, it will be a virtual mark.
• ​​Protection level​​: IP65 is the bottom line of outdoor screens. I have a cold knowledge: Many waterproof adhesive strips of screens age in two years, so you have to choose a belt​ ​Replaceable seal strip​​Model

For example, if the shopping mall atrium is installed​​Transmission rate 86%​​The transparent screen can not only display advertisements but also prevent lighting, and is much more advanced than the traditional black iron box. This kind of screen is now used by many restaurants and can also be used as an interactive game wall to attract customers at night.

3. After-sales service is the real thing

Buying a screen is not buying cabbage, but focus on these three services:

1. ​​Response speed​​: Regular manufacturers have 24-hour technical support. Last year's New Year's Eve party, there was a black screen at the rental screen. The engineer arrived with spare parts for 20 minutes, but the countdown was not delayed.
2. ​​Spare parts inventory​​: A shopping mall in Southeast Asia suffered a loss - a small module broke the screen, and waited for accessories for two months, and the promotion season was cold
3. ​​Installation instructions​​: High-altitude screen installation must be​​Load-bearing calculation book​​A supermarket chain was blocked by fire for three months because it didn't have this.

Special reminder: When signing a contract, you must clearly see the warranty period of the lamp beads. Nowadays, mainstream manufacturers dare to protect it for 3-5 years, but if it only costs 1 year... you know.

4. Innovation function hides the money bag

Now you have to buy a screen and see if you can make money:

• ​​Smart power saving​​: The new generation of screens can automatically adjust the brightness, and the electricity bill will be cut by 40% directly
• ​​Data collection​​: Some floor tiles can count the passenger flow heat map, which is much more valuable than advertising space.
• ​​Quick modification​​: Quickly disassemble the screen, store advertisements in the morning, and disassemble it at night and becomes an interactive device in the night market.

I knew a milk tea shop owner and had a good time: he installed it in the window​​Transparent interactive screen​​, customers can directly order and play games, and their monthly turnover increased by 15%. This kind of gameplay is unstoppable by the traditional large iron box screen.

5. Personal advice

Buying a shopping mall LED display is like finding a partner - the parameters are appearance, the services are internal, and the innovative functions are additional points. Remember these three mantras:​ ​Brightness depends on actual measurement, after-sales service, and innovation depends on demand​​. Don’t believe the nonsense of “the lowest price on the entire network”, the cost of a good screen lamp bead is there. Next time you see the cool large screen in the mall, you might as well get closer and see if the gaps in the interface are intact and whether there is any light leakage in the corners - these details are the real kung fu.

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