Alas, did you notice? Now the windows of street shops are getting more and more dazzling! I used to post posters to show models, but now I just go to the screen that will move. Last week, I passed by the commercial street and saw a milk tea shop showing new products with a transparent screen. The pearls in the drink actually jumped around the screen - where did you buy this thing? Let’s talk about this today.

Lesson 1: Find out what you want

Don't rush to find the seller first, you have to figure out how many types of this thing are. It's like buying clothes. You have to know first whether you want to buy a down jacket or a short-sleeved one, right?

​​Three key points:​

1. ​​Population​​: Don’t let the screen block the goods in the window! A good transparent screen can achieve 86% light transmittance. If you look at it from a distance, you may think that glass comes with magic.
2. ​​Waterproof and collision-proof​: Street shops are most afraid of naughty children and rainy days. IP65 protection level is the bottom line (that is, it can prevent high-pressure water guns from flushing)
3. ​Playback mode​: It is necessary to automatically switch between time periods, such as 10 o'clock in the morning to release promotional information and 8 o'clock in the evening to cut brand stories

(At this time someone must ask: Is that the more expensive the better? It’s really not! I’ve seen a chain fast food restaurant spend a lot of money to install 4K screens, but the menu that was broadcast was not as clear as the 1080P screen in the milk tea shop next door - the key is to look at the parameters matching)

Lesson 2: Three major channels for buying screens

Don’t think that only computer cities can buy it. Now the way is wild:

​Channel 1: Direct purchase by manufacturer​
Just find a factory with a production base, the advantage is that the price is transparent and customizable. For example, the factory in Shenzhen with a monthly output of 10,000 square meters was built for a Seoul coffee shop last year, and the operating table was directly packaged into a circular display screen. When the customer ordered the order, the coffee bean animation was turned on at hand.

​Channel 2: Scenario Solutions​
It is suitable for novices who don’t understand technology. They can package it for you to design + install + content production. But it has to be bright. Last year, an internet celebrity bookstore was cheated. The screen you bought can only broadcast fixed templates. If you want to add a scan code and click the book function, you have to add more money to upgrade the system.

​Channel 3: Gold rush in the second-hand market​
This water is deeper. I will teach you a trick: look at the power interface! Eighty-most of the ones with Type-C are new products within three years, while the ones with traditional aviation plugs are basically the old models five years ago. However, cafeteria carefully choose second-hand products, and the kitchen fume will cause the screen to grow spots in minutes

Soul-questioning session

Q: There are online quotes ranging from 8,000 to 80,000 yuan per square meter. What’s the difference?
A: Give a real case - the screen that Boss Zhang bought for 30,000 yuan was used for half a year and appeared in color blocks. When you take apart, you can see that the driver chips were in stock from five years ago. Now the new models use a 1920Hz refresh rate chip, and the picture is smoother than the mobile phone screen

Q: How to judge whether the seller is reliable?
Ask the other party to shoot three videos:

1. Use a flashlight to shine the seams when playing pure white pictures (see if there is any hidden disease)
2. Quickly switch between red, green and blue primary colors (detect color synchronization rate)
3. Disassemble the control box and shoot the circuit board serial number (check if it is a refurbished piece)

Pit avoidance guide

Last month, Sister Li complained to me that the window screen she bought was seriously reflective when sunny. Later I found out that the brightness was not adjusted correctly - remember these two numbers:

• South-facing shop: Starting at 4000cd/㎡ during the day
• Shade position: More than 2500cd/㎡ is a waste of electricity
  (It's just like driving a high beam in broad daylight, it makes people's eyes hurt and have no effect yet)

Say something heart-wrenching

I know a master who has been in the light box business for 20 years. Last year, I gritted my teeth and changed my LED window screen. Guess what? The customer flow has not changed, but the average customer stay time has increased from 7 seconds to 46 seconds, and the sales have increased by 30%. In his words, "Now, young people walk through the window and don't raise their phones to take a photo and post it on WeChat Moments, I will lose!"

So, you can't just compare the price when buying this thing. It depends on whether the after-sales service can respond 24 hours a day (for example, someone needs to repair the screen flashes on heavy rains), and whether the content update is a fool (you can't find an engineer every time you change the menu). By the way, don’t forget to ask if you can do split-screen display - put the product on the left and display the inventory in real time on the right. This is called a smart display window!

Finally, I would like to remind you: Don’t believe in the nonsense of “lifetime warranty”, the technology iteration of the LED industry is faster than that of mobile phones. Focus on service commitments within three years, which is a real guarantee.

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