Energy green has become a major theme of today’s era. As human life is getting better, environmental pollution is also increasing. Therefore, human beings must protect our world. Nowadays, all walks of life are also advocating the manufacture of green and environmentally friendly products. How can LED companies develop and design LED video walls that do not generate light pollution and save electricity? This has become an important target and goal for manufacturers.

​

The LED video wall has been widely used in every street corner of the city and has become a unique symbol to enhance the image of the city, but while it beautifies the image of the city, the strong light of the screen also has a certain negative effect on the nightlife of urban residents. Although the LED industry is a light-making industry, and the light production of the LED video wall is understandable, from the view of environmental pollution side, it has become a new type of pollution – light pollution. Therefore, as an enterprise, we should pay attention to the problem of light pollution in production and control the output of brightness accordingly.

​

The first control method – adopts an adjustable system that can automatically adjust the brightness output of the screen accordingly.

​

Day and night, in different locations and time periods, a slight change in the brightness of the display will have a great effect. If the brightness of the LED video wall is 50% higher than the ambient brightness, human eyes will feel uncomfortable, this will cause so-called light pollution. though a light sensor system, the brightness of the LED video wall will be adjusted automatically according to the ambient brightness, so as to make sure it’s suitable for human eyes in different ambient brightness conditions.

​

The second control method: multi-level grayscale correction technology.

LED video wall system has a 14-16bit grey level so that the screen will have better performance in lower brightness/grayscale, this is making people feel the color is soft when watching the screen and avoiding people uncomfortable feeling the light.

​

In terms of power consumption, although the LED lamps used by the LED video wall itself are energy-saving, some of them need to be applied to occasions with a large display area. If they are used for a long time, the overall power consumption is still relatively high because of the brightness required. Under the effect of these comprehensive factors, the power consumption of the display screen is quite huge, so the electricity bill will also increase geometrically. Therefore, LED video wall manufacturers and enterprises can save energy through the following 6 ways:

​

• Use LED lamps with high brightness and with low light degradation.

• High-efficiency switching power supply is adopted, which greatly improves the power conversion efficiency, a cheap PSU usually has lower conversion efficiency and generates more heat.

• Excellent screen heat dissipation design to reduce fan power consumption, less heat will also lower the malfunction rate of the system;

• Design a scientific circuit layout to reduce the power consumption of internal circuits;

• According to the changes in the external environment, the brightness of the outdoor display screen is automatically adjusted, so as to achieve the effect of energy saving and emission reduction;

• Use lower DC voltage for example 4.2 or less to save electricity. 5V input was the old way but that’s a waste of electricity since the LED video wall system can still work with a lower voltage.