You stand at the entrance of the mall and stare at the LED screen that plays promotional information. Do you always feel that the picture is a bit blurry? Or you are just starting a business and opening a store, looking at the various LED product parameters, you don’t know where to start? Don’t worry, today we will break it apart and talk about this huge LED strip screen size issue.

Let’s talk about the “unspoken rules” in this industry first. Last year, there was a case in the Shenzhen Convention and Exhibition Center. A chain of convenience stores chose the wrong size and the installed LED screen looked like it was mosaiced during the day, and finally it was disassembled and reinstalled. In fact, choosing a size is the same as buying shoes. Only you know whether it fits your feet or not. So how should we choose?

​​1. Understand the "ID card" of LED strip screen​
The size of an LED strip screen is not a simple length, width and height. The key depends on the core parameter of pixel spacing. For example, the common P10 is that the adjacent lamp beads are spaced 10 mm apart. The smaller this value, the more delicate the picture is. The mainstream ones on the market are:

• P5 (convenience store window suitable for viewing within 3 meters)
• P8 (the best choice for restaurant doors)
• P10 (commonly used in gas station price tags)
• P16 (large parking lot indicator screen)

There is a point that is easy to confuse: it is not that the smaller the pixel spacing, the better! Last year, an internet celebrity restaurant in Hangzhou used a P4 screen, but found that they couldn't see the menu clearly when they stood 10 meters away. This is a typical pain of spending money.

​​2. Installation environment determines life and death​

1. ​Indoor scenes​: For those who watch close-up like the cashier in the milk tea shop, it is recommended to choose P5-P8. I have a cold knowledge - the brightness of the indoor screen should not exceed 1200cd/m², otherwise customers will be dizzy when they stare at it.
2. ​​Outdoor scenes​​: Pay attention to the two parameters! The protection level must be at least IP65 (dust-proof and waterproof), and the brightness is recommended to start at 4000cd/m². Last year, the LED screen of a clothing store had a short circuit in the water in a clothing store, which caused a loss of protection level.

Here is a practical tip: measure the average distance between the installation position and the flow of people, and use this formula to calculate the minimum pixel spacing - viewing distance (meters) × 1000÷1000 = the recommended minimum spacing (mm). For example, if the customer stands 5 meters away, it is enough to choose P5.

​​3. The "fool formula" for size calculation​
Don't be scared by professional terms, remember these three steps:

1. Measure the available dimensions of the installation location (length × width)
2. Determine the pixel spacing (P value)
3. Use this formula: Total pixel points = length (mm) ÷ spacing value × width (mm) ÷ spacing value

To give a real case: a supermarket needs to install a 3-meter-long × 0.6-meter-wide strip screen. If you choose P10, it will be calculated that it is 3000÷10=300 columns and 600÷10=60 rows, and a total of 18,000 lamp beads are needed. Did you suddenly feel it was simple?

​​4. 5 fatal mistakes that novices often make​

1. Blindly pursuing "super large screen" (actually, it seems bulky if it exceeds two-thirds of the door)
2. Ignore the load bearing of the installation bracket (some old building walls cannot afford weight at all)
3. Forgot to reserve heat dissipation space (leave at least 10 cm of ventilation gap)
4. No later maintenance is considered (the maintenance channel should be at least 80cm wide)
5. Confused by low prices (those three-no products on Taobao will lose their color after half a year)

Here is an insider of the industry: truly reliable manufacturers will provide 3D effect simulation services, and you can see the actual effect before installation. Never trust suppliers who only give parameter tables but not real-life solutions.

​​5. Ask and answer the core questions​
Q: Is the larger the size of the LED strip screen the better?
A: A big mistake! Last year, a shopping mall in Shanghai installed an ultra-long screen, but the screen at both ends was severely deformed. It is recommended that the single block should not exceed 6 meters. If it is too long, it should be designed in segmented style.

Q: Why are the prices of different brands of the same size several times different?
A: The secret is on the lamp bead! The attenuation rate of high-quality lamp beads is less than 3% per year, and if they are poor, they may turn yellow in one year. There is a simple detection method - touch the heat sink half an hour after turning on the computer, and it will definitely cut corners if it is hot.

Q: How to judge whether the plan given by the merchant is reasonable?
A: It depends on whether the other party asks these three questions: ① Average daily business hours ② Main display content ③ Surrounding environment lighting. Those who don’t even ask about these are definitely second-hand dealers.

Finally, let’s say the heartfelt words: choosing an LED screen is like finding a partner, and the most important thing is to be suitable. Don’t look at those fancy functions, first understand the basic size and parameters. When you go shopping next time, you can pay attention to the LED screens on the store that look comfortable, which are designed strictly according to the viewing distance and scene needs. Remember, a good LED screen should exist like air—it is presented clearly when you need it, and it is quietly blended into the environment when you don’t.

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