Large Outdoor LED Display Screen Is Widely Used. What Are Its Characteristics

Large outdoor LED displays are well known. They are usually used in advertising, traffic information and cultural exchanges. In large and medium-sized cities around the world, various large outdoor LED displays are all over every corner of the city center, and even become a highlight of the city center. Because of the wide application of large outdoor LED display, more and more people are interested in it. Shenzhen LED display manufacturers will share with you the characteristics of outdoor LED display. Let's have a look.1. Large outdoor LED display screen is composed of many single LED beads, and the pixel spacing is usually large. Compared with small spacing LED display, the advantage of large spacing LED is low cost. The cost per square meter of large spacing LED display is much lower than that of small spacing LED display. However, the visual distance from the outdoor large screen is generally far, such as 8m, 10m, etc. when viewing the pictures on the large screen from a distance, there will be no sense of "particles" and the picture quality is clear.2. Wide coverage and wide audience.

Large Outdoor LED Display Screen Is Widely Used. What Are Its Characteristics 1

Large outdoor LED displays are generally installed in higher places, with larger screens and larger viewing angles. Under normal circumstances, the video can still be seen clearly from the angle of 140 degrees in the horizontal direction, which makes the display content of the large LED screen cover a wider range and more viewers. This main function is also one of the reasons why many enterprises are willing to choose outdoor large LED display as advertising content.3. The screen brightness can be adjusted automatically.Large screen LED display installed outdoors will be affected by outdoor weather. For example, the outdoor brightness will be different between sunny and rainy days. If the brightness of the display screen cannot be adjusted automatically, the effect will be different or even greatly reduced under different weather conditions. In order not to affect the viewing effect of the target audience, the outdoor large LED display screen will have the function of automatic brightness adjustment, that is, the brightness of the display screen will be automatically adjusted according to the outdoor weather conditions to achieve the best display effect.

4. Easy to maintain.The cost of installing large outdoor LED displays is not low, ranging from hundreds of thousands to millions. Therefore, easy maintenance is very important for large LED displays, which is very important to ensure the long-term stable operation of the display. Generally, large outdoor LED displays can be maintained afterwards. Some displays are maintained by front maintenance, of course, there are also front maintenance and rear maintenance.fqj

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On the Protective Function of Self Restoring Fuse in LED Display Screen
LED is developing rapidly now. LED is used in various fields, so people pay attention to its safety. Today, let's talk about the protective role of self-healing fuse in LED display screen.LED display screen is a display screen composed of LED array screens of multiple units. Each LED array unit consists of a small screen composed of an equal number of LED particles. Each unit LED screen has an independent driving circuit, and the driving signal is distributed by the signal distribution circuit.In an LED panel, generally, one or several power supplies supply power to each driving circuit board. Each power supply must supply power to multiple LED array units, which is another scheme to reduce the power supply cost. Under this power supply scheme, each unit led panel is the load of the power supply.During the operation of the display screen, if any one of the screens is short circuited or over-current or over temperature, the total power supply will not work and the whole LED screen will be paralyzed. In order to avoid this situation, it is necessary to make over-current temperature protection circuit for each unit screen and over-current temperature protection circuit for the power supply itself, so it is necessary to design more protection circuits.In this protection network, the simplest and most feasible scheme is to select the collector self recovery fuse for over-current temperature protection. Because the collector on self recovery fuse is selected, only one element needs to be connected in series to the power branch to complete the over-current temperature protection function at the same time. PolySwitch positive temperature coefficient thermistor is also called jdtfuse self recovery fuse or self reset over-current protector.In case of large current and high temperature, the collector on self recovery fuse will suddenly change to high resistance to limit the current of the circuit and achieve the purpose of timely protection. After an emergency, the collector on self recovery fuse will return to the normal working state of low resistance.The protection circuit of jdtfuse in LED display screen is shown in the figureTherefore, in order to protect the circuit timely and accurately, it is recommended that you choose jdtfuse. If you don't know how to choose a specific model, you can contact our online engineers, who will give you good suggestions. fuse-tech.com
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