In recent years, the LED display screen industry has developed rapidly, and LED display screen manufacturers are uneven. Faced with a wide range of products, confused users often do not know how to choose?
So, what should I pay attention to when purchasing an LED display screen?
Firstly, when communicating with the display screen manufacturer, the customer should first have a detailed understanding of the manufacturer’s LED display screen technical parameters, such as brightness, light attenuation, lifespan, after-sales service, installation, etc., and then slowly negotiate the price after a comprehensive understanding. If you don’t have much understanding and directly negotiate prices with the manufacturer, the manufacturer may think that you value price over quality, or that you are just inquiring and have no sincerity in purchasing, and will inevitably not quote a reasonable price.
Secondly, we can take a look at the company’s physical factory scale and some related certificates, check the annual turnover of the factory, and determine the company’s strength.
Next, we should consider where to install the LED display screen, what it is used for, how far to view it, and how to maintain it in the future. We should also inform you of the manufacturer who purchased the LED display screen, so that it can make a suitable solution according to your needs.
The following points can serve as a reference for your selection:
Generally speaking, try to choose a new type of wide-angle tube with a wide viewing angle, pure colors, consistent coordination, and a lifespan of over 100000 hours.
2. The outer packaging of the display screen should be a square cylinder with a covered edge, sealed with silicone, and equipped without metalization. It has five characteristics of preventing direct sunlight, dust, water, high temperature, and circuit short circuits.
3. Choose the appropriate display screen based on different actual needs.
(1) The pedestrian flow guidance at entrances and exits of stations, docks, large markets, and elevator entrances adopts a 5.0mm monochrome display screen. It has the advantages of clear font, low price, and easy operation.
(2) Banks, shopping malls, and other occasions are mainly used to display corporate image, place advertisements, and other applications, and require low prices φ 3.75mm dual color display screen. If the display effect is required to be good, it can be used φ 5mm full color display screen.
(3) For large areas such as halls, use φ 5mm dual color display screen. If display effect is required, use φ 10mm full color display screen.
(4) Postal, power, and other public service windows, used to define the functions of service windows, using φ 3mm or φ 5mm display screen, convenient for changing window service functions at any time.
How to choose a suitable outdoor LED display screen in harsh usage environments?
(1) The LED screen body and the junction between the screen body and the building must be strictly waterproof and leak proof. The screen should have good drainage measures to facilitate drainage in case of water accumulation.
(2) Install lightning protection devices on display screens and buildings. The main body and casing of the display screen should be well grounded, with a grounding resistance of less than 3 Ω, to timely discharge the large current caused by lightning.
(3) Install ventilation equipment to cool down and keep the internal temperature of the screen between -10 ℃ and 40 ℃. An axial flow fan can also be installed above the back of the screen to dissipate heat in a timely manner, improving its performance and lifespan.
(4) Select industrial grade integrated circuit chips with a working temperature between -40 ℃ and 80 ℃ to prevent the display screen from not starting due to low winter temperatures.