How much brightness for your outdoor led display?
When most of clients choose their outdoor led display, we might require the supplier the brightness. However, do you know that the maximum brightness should be based on a specific current?
The current should allow the LED display to work continuously under conditions of low temperature rise, low power consumption, and slow brightness decline. Thus, the display has a long life, good visual effect, and low electricity bills for users.
I used the following sample cabinet to test the relationship between the maximum brightness of the LED and the current.
Sample: P10 LED Display, cabinet size 1280x1280mm, 4x8=32pcs modules.
Module: P10 320x160mm with DIP346 Gold Wire LED + MBI5124IC
When the brigntess 8000 Nits, the measured data are as follows: brightness 8080 nits, module current 5.26A, AC input current 3.9A.
Then we get the following result:
Maximum power consumption:
The whole cabinet 220V*3.9A=858W;
858W/(1.28*1.28)m2=523W/m2 per square meter.
Each module 5V*5.26A=26.3W
Now let us look at another situation on the same screen. I managed to increase the brightness by adjusting the parameters. The measured data are as follows: brightness 9390Nits, module current 6.47A, AC input current 4.55A. so,
Maximum power consumption:
Whole cabinet 220V*4.55A=1001W;
1001W/(1.28*1.28)m2=611W/m2 per square meter.
5V*6.47A=32.3W per module
In this case, the brightness is as high as 9390Nits and the power consumption is 611W/m2. Obviously, this is not sustainable and will cause great damage to the LED display. The high current causes the brightness to drop quickly, the temperature is high, the color is changed, the life span is greatly shortened, and problems are prone to occur.
Some suppliers may provide you with higher brightness than expected. But if this brightness corresponds to an abnormally large current, it is a bad solution for users, regardless of the price. Therefore, be sure to check the current or power consumption to ensure that you get a valuable LED display as expected.