source:other news release time:2022-11-25 Hits: Popular:led screen wholesaler
Outdoor LED display screen has a large use area, large relative energy consumption, more obvious heating, and high temperature in summer, which easily leads to the problem of heat dissipation LED display screen. In order to deal with the heat dissipation problem of outdoor LED display screen, it is necessary to adjust the design and structure of the external display screen. In the installation stage, the micro distance air permeability design is adopted, and the circuit board is designed with high density. Try not to add fans, and reduce circuit integration. Air conditioners or fans are used for heat dissipation in special environments. In order to prevent open fire, LED display wire shall be made of flame retardant materials to prevent wire from aging and short circuit ignition.
Summer is accompanied by hot weather, thunderstorm and long rainy season. Typhoon has a great impact on coastal cities. Large areas of precipitation put forward higher protection requirements for LED screens to prevent rain, thunder and wind.
1. Outdoor LED display screen is wind resistant and earthquake resistant
With the wide application of outdoor LED large screen advertising, the installation forms of LED display screen are more and more diversified, including wall mounted installation, inlaid installation, hoisting, roof installation, column installation, etc. In order to prevent LED display equipment from falling, there are strict requirements for the selection of load-bearing steel structure steel for wind load and seismic performance, especially for roof installation and column installation
2. Lightning protection measures for outdoor LED display
In order to ensure good grounding, all metal boxes and back covers of LED large screen equipment have separate grounding terminals. The terminals are connected with waterproof fasteners and ratchet pads. The grounding is reliable. The large screen equipment adopts the common ground wire structure, which is a way of "three grounds" (equipment working grounding, power grounding, lightning protection grounding). The protected power supply and signal system lightning strike and surge voltage damage the equipment
3. External and internal leakage prevention of outdoor LED display
The mask and cabinet are made of insulating materials. The insulation material resistance is greater than 10 megohms, and the leakage current is less than 1.8 MA. The product can still withstand 50 hz under hot weather conditions according to our department's test. The insulation strength shall be 1500W test voltage breakdown for 1 minute. The circuit board will be protected by three proofing paint, and the quality of large LED display screen shall be higher than IP65 waterproof grade in the international protection system. In this way, leakage can be guaranteed from materials to waterproof performance
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