How to do waterproof measures for outdoor LED display
Outdoor led display screens need to pay attention to waterproof problems. Enhanced waterproof protection can prolong the service life of the display screen, so waterproof protection needs to be checked from the source. Among them, the choice of waterproof connectors is particularly important. At present, there are many varieties of waterproof connectors on the market, but the quality is uneven, so how to choose?
Choosing a good LED display manufacturer and choosing a high-quality LED waterproof connector can generally be considered from the following aspects.
1. First of all, meet the relevant technical standards for electrical, installation, connection, insulation, protection and other technical standards, which is the basis for selection.
2. Look at the tolerance size control accuracy of the assembly parts.
Because connectors often involve connection, waterproofing, male-female contact and mating, etc., they need to have high precision requirements for size. At first glance, high-end and low-end connectors are almost the same in shape and structure. How to spend some time and carefully measure the mating size of multiple pairs of connectors with a caliper, you will find that the mating size of poor quality varies greatly, that is, the stability of the connection is not guaranteed, and the consistency of batch products is poor.
3. LED display manufacturers can’t just look at the standard, they should go beyond the standard and pay attention to the situation encountered in practical applications.
Because some of the standards selected for the design and production of connectors in the LED industry are actually borrowed from other industries, because the industry application time is relatively short, many terms do not meet and meet the rapidly changing requirements of the LED industry, such as the requirements for aging-resistant materials. The assessment is only generally in line with the use of outdoor projects, but how to define it depends on whether it is based on the UL yellow card or the test. The lifespan shall prevail”, which directly affects the selection and design of product materials, and is also the reason for the variety of LED connector materials.
In addition, the requirements of individual standard clauses are still relatively low, that is to say, the threshold for quality is very low, resulting in all kinds of home workshops can be produced at will, and some test standards are tested in a “standard static environment”, which often occurs After the engineering accident, the connector was re-tested and found that it was still qualified according to the standard. Why? Because the laboratory tests have selected standard terms and standard environments, and the environment of the application site is very different, such as the M16 cable gland at the end of the connector. For the requirements of cable gripping force and torque resistance, the standard only says that the tensile force reaches 80N, and the anti-torque value is greater than 0.45N.m, but the connector may be pulled and twisted artificially in actual use, so the actual data may be far from the standard value. And this force is maintained between the two connectors for a long time. After a long time of outdoor use, the connector is often not waterproof or the contact is poor and the circuit is broken.
4. LED display manufacturers pay attention to the design of the structural principle, and the structural design is very important.
If the principle design such as waterproofing and connection is more advanced, it will be better than others. If you choose an outdated structural principle design, even if the quality control in the manufacturing process is very good, it is often in reliability and outdoor long-term weather resistance. Sex and other aspects are not as reliable as the innovative generation of products.
5. Look at the production quality control system of the LED display manufacturer’s connector.
It is easy for a connector company to provide a pair of connectors for testing, and you can get good test scores, but when you arrive at the factory, you will find that there are no inspection standards for raw materials, and there is no necessary testing link for finished products. Repair and testing of unqualified products No procedures, etc., have affected the quality of the product, that is to say, only 100% qualified, not 1,000,000,000 qualified. In the long run, good quality system control is even the most important reference factor for lighting manufacturers to choose connector manufacturers, otherwise it will be “small loses big”. In general, enterprises with larger production scale and technical testing equipment have a correspondingly higher level of product quality control and stability.
To choose a good outdoor LED display, you need to consider all aspects, not only the quality of the product, but also the company’s comprehensive strength, quality system, after-sales service, and so on.