Boss Zhang, who just entered the industry, spent 300,000 yuan to install transparent window screens, and made a joke on the day of opening - it looked like frosted glass during the day, and advertisements were broadcast at night and directly exposed to the warehouse shelves. This kind of crash cases are everywhere in the LED industry. How should novices avoid lightning?

1. Three major misunderstandings that 90% of the newbie are hit

​​Misunderstanding 1: Only look at the transparency and not the matching degree​
There is a milk tea shop owner who insists on pursuing a 95% transparency rate, but the store is as bright as a vegetable market during the day, and customers can't see the menu clearly. Actually​86% light transmittance​Just just right, it can maintain the window display function and not reveal the mess behind it when broadcasting advertisements. Here is a measured data: when the ambient light illuminance exceeds 3000lux, the screen recognition will be increased by 18% for every 5% reduction in light transmittance.

​​Misunderstanding 2: Blindly pursue the minimum spacing​
A 4S store installed a P2.5 ultra-tight screen, but the repair fee was higher than the purchase price - the repair channel as thick as a finger could not reach into the precision module at all. It is recommended to select the distance according to the viewing distance:

​​Misconception 3: Ignore the box heat dissipation design​
The root cause of the smoke incident at a music festival was that the pore rate of the aluminum profile box heat dissipation hole was less than 30%. High-quality products should have these characteristics:
• Front and rear double-sided heat dissipation channels
• The working temperature is stable at 45℃±3℃
• The spacing between lamp beads ≥1.5mm to prevent heat accumulation

2. Selection secrets that experts won't tell you

​​Tip 1: Should the lamp bead be sent sideways or straightly?​​
Although the brightness of the side luminescence can reach 5500cd/m², the entire module must be removed during maintenance; although the brightness of the regular luminescence is 3000cd/m², it can be maintained in advance, which is more suitable for scenes such as shopping malls where business cannot be closed. There is a personal experience of a clothing store owner: a light bead was broken on the side luminous screen, and the store lost 50,000 yuan in turnover in three days.

​​Take 2: The trick in the power cord​
I will teach you a unique skill: peel off the outer skin of the power cord - 19 cores are 40% more expensive than 11 cores, but the transmission stability is 3 times higher. A chain of supermarkets fell here, using cheap wires caused signal delays on 43% of the screen.

​​Take 3: Hidden cost during installation​
Don't underestimate these details:
• 20% power margin per square meter is reserved (such as nominal power consumption of 800W, and actual wiring is 960W)
• The weight of the steel structure is ≥1.5 times the screen weight (10㎡ screen weight is 120kg, the bracket must be able to carry 180kg)
• The width of the maintenance passage is ≥80cm (the passage that the fat master cannot even get into is a hooligan)

3. The soul torture that novices must ask

​​Q1: Why is the price difference between the same parameter three times?​​
The key lies in the driver IC and lamp beads - the combination of Taiwan's gathering IC + Guoxing lamp beads. Although it is 35% more expensive than miscellaneous brands, the failure rate has dropped by 67%. A lesson learned from a bloody and tears: a restaurant uses a fake IC with cheap pictures, but it turns out that it repairs twice a month, and the two-year repair fee is enough to buy a new screen.

​​Q2: How to judge the real display effect?​​
Take three magical tools to inspect the goods:

1. SLR camera: Open 1/1000 shutter to shoot the screen, and it is really high-brushing without ripple
2. Laser thermometer: If the temperature difference is > 5℃ after working for 1 hour, run quickly
3. 5 yuan banknote: insert it vertically into the joint, and if it can be stuffed, it will not be craftsmanship

​​Q3: How to protect outdoor screens from lightning strikes?​​
Remember this life-saving formula:
Lightning belt coverage range = screen height × 1.5
For example, for a 6-meter high screen, the lightning belt must cover a radius of 9 meters. A certain scenic spot did not install according to this standard, and it directly broke three screens during the thunder and rainy season.

4. Hidden pits of after-sales service

A truly reliable service should include these:

1. ​72-hour aging report​: Check whether the color difference curve fluctuates less than 5%
2. ​​Spare Parts Library Announcement​: Core component inventory ≥30%
3. ​Remote diagnostic system​: 73% of the faults don't need to go to the door
   There is a classic case: the screen is black on the eve of the New Year's Eve event, and the technician's video guidance resets the driver, and it takes 2 hours to avoid millions of losses.

Editor's opinion

Before signing the contract next time, try to ask the supplier: "Can I go to the workshop to shoot an aging test video?" The manufacturer who dares to agree is basically of bad quality. Remember, good screens are designed and even more "really" - those who print the power cord number in the contract are the real and reliable masters.

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