"Is it necessary to approve an LED door headset? It will be too late to wait for the urban management to demolish it! "Xiao Liu, who had just opened a milk tea shop, looked at the door with a seal and was crying without tears. Don’t laugh, bosses, last year, more than 200 illegal LED screens were forced to be demolished in Shenzhen alone. Today we will break it apart and talk about who should I ask for to approve this shiny billboard and how to approve it.

▎Let’s first figure out: What kind of door front screen needs to be approved?

​​20 seconds self-test method​​: Use a tape measure to measure the screen area - it is necessary to approve it if it exceeds 3㎡. No need to use a screen with a less than 3㎡ (but it must comply with the city appearance specifications). Take a chestnut:

• Convenience store 5㎡ scroll menu screen → Must submit approval
• The static logo screen of the milk tea shop 2.8㎡ → No approval required but attention should be paid to brightness

Last year, a 3.5㎡ transparent screen installed in a Korean chain store did not go through the approval process and was asked to remove and reinstall it three days after opening, losing 150,000 yuan in installation fees.

▎Who should I ask for to criticize? The three major yamen can't escape

1. ​​Urban Management Bureau takes the lead​​
   With the renderings, I first went to the urban management squadron in the jurisdiction to sign the "Five-guarantee letter in front of the door", which is equivalent to a "military order", promising not to engage in light pollution and regular cleaning and maintenance. Notice! The legal person must sign it in person and sign it on behalf of others will directly reject it.

2. ​​Government Service Center Sings the Highlight​​
   Prepare these 10 "passing certificates":
   ① Copy of business license (both the original and the copy are required)
   ② Copy of the legal person's ID card
   ③ House ownership certificate/lease contract
   ④ 6 real scene renderings (close view × 2+far view × 2+night view × 1+original appearance × 1)
   ⑤ Safety responsibility letter (signed with the installation company)
   ⑥ Construction enterprise qualification certificate
   ⑦ Electricity safety inspection report
   ⑧ Structural load proof
   ⑨ "Letter of Commitment" (handwritten and signed with red handprint)
   ⑩ Special industry license (catering and sanitary license is required)

3. ​​Planning Bureau made a decision​​
   Finally, go to the planning department to confirm whether the installation plan meets the urban landscape. Here is a hidden technique - prepare the "Feasibility Report" in advance, focusing on writing that "LED screens are 30% environmentally friendly and energy-saving than traditional spray-painted cloths", etc., the pass rate can be increased by 40%.

▎Four-part approval process (with pit avoidance guide)

​​Step 1: Pre-review of materials​​
The government affairs center window checks materials on the spot, and make up for whatever is missing. The most outrageous case I have ever seen - the boss came with an expired business license and was asked to re-apply for half a month.

​​Step 2: On-site survey​​
There will be a special person to come to the store to check within 3 working days, and the focus will be on three points:

• Does the installation location affect pedestrian traffic?
• Whether the power supply line complies with the specifications
• Will screen brightness interfere with traffic

​​Step 3: Joint meeting​​
Planning, industry and commerce, transportation and other departments hold meetings, mainly assessing:
① Daytime brightness ≤8000cd/㎡ (outdoor screen standard)
② Automatically adjust to 30% brightness after 22 o'clock at night
③ Dynamic screen switching interval ≥5 seconds

​​Step 4: Receive the approval document​​
After passing, you will get the "Billboard Approval Opinion" and remember to paste the approval number in the lower right corner of the screen for reference. A sports brand store in Tokyo was fined 20,000 yen for not posting approval codes.

▎Three life-saving details during installation

1. ​​The structure must be hard-core​​
   The outdoor screen bracket must be made of 304 stainless steel, with wind resistance level ≥10. The IP65 protective screen we installed for Southeast Asian customers is as stable as Mount Tai during the typhoon season.

2. ​​Leave margin for power supply​​
   Total power × 1.5 = required power supply capacity. Last year, a hot pot restaurant settled the dead debt, but the screen tripped after half an hour of opening.

3. ​​Leave room for heat dissipation​​
   A 30cm heat dissipation channel is reserved at the rear of the screen, and it is recommended to install an exhaust fan in high temperature areas. The screen installed in a shopping mall in Bangkok suffered this loss, and the screen was blacked 8 times during the rainy season.

▎Maintenance hidden skills

• ​​Must-do every day​​: Check whether the brightness is automatically adjusted once in the morning and evening
• ​​Must check every week​​: Touch the module temperature with your hands (repair should be done after exceeding 45℃)
• ​​Monthly compulsory​​: Use a vacuum cleaner to clean the heat dissipation hole (remember to turn off the power first! )

The most painful lesson - some merchants haven't cleaned up the dust for two years, but as a result, the circuit board has accumulated dust and conduction and caused a fire, and the entire door head is burned into an empty shelf.

Personal experience of trampling

After ten years of hard work in the industry, I have three bloody and tears experiences that must be said:

1. ​​Don't save testing fees​​: Spend 2,000 yuan for structural load testing, better than paying 200,000 yuan afterwards
2. ​​The contract must be written to death​​: Clearly requested "inspection through inspection", but full refund will be made
3. ​​Keep a change​​: Even if you change the content of the playback, you must back up the approval documents

Recently, I met a smart boss who registered the approved LED screen solution for appearance patents, but the competitors wanted to install the same model and were rejected. So, this luminous door head is not only a billboard, but also a moat for commercial competition!

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