Adjust the brightness of the outdoor full-color LED display according to the environment. The main purpose of brightness adjustment is to adjust the brightness of the entire LED screen according to the intensity of the ambient light, so that it looks clear and bright without glare. Because the ratio of the brightness at the brightest sunny day to the brightness at the darkest time can reach 30,000 to 1. The corresponding brightness settings vary greatly. However, there is currently no configuration for brightness specification. Therefore, the user should adjust the brightness of the LED electronic display screen according to the changes in the environment.
Full color led display
Standardize the blue output of outdoor full-color LED displays. Because brightness is a parameter based on the perception characteristics of human eyes, human eyes have different perceptions of light at different wavelengths, so only brightness cannot accurately reflect the intensity of light, and irradiation as a measure of visible light safety energy can more accurately reflect The dose of light on the eyes. The measured value of the irradiance measuring device should be used instead of the eye's perception of the brightness of the blue light as a basis for judging whether the blue light output intensity will cause damage to the eyes. Outdoor LED display manufacturers and users should reduce the blue light output component of the LED display under the display conditions.
Standardize the light distribution and direction of the LED full-color display. Users should try their best to consider the rationality of the light distribution of the LED electronic display, so that the light energy output by the LED is evenly distributed in all directions within the viewing angle range, and the strong light of the LED with a small viewing angle is not directly irradiated to the human eye. At the same time, the LED light irradiation direction and range should be limited to reduce the pollution of the LED display to the surrounding environment.
Standardize the output frequency of the full-color screen. LED display manufacturers should design the display strictly in accordance with the requirements of the specification, and the output frequency of the display screen meets the requirements of the specification, so as to avoid the discomfort caused to the viewer due to the flickering of the screen.
The safety measures are clearly stated in the user manual. LED display manufacturers should indicate the precautions for use in the LED display user manual, explaining the correct way to adjust the brightness of the full-color screen, and the possible harm to the human eyes by looking directly at the LED display for a long time. When the automatic brightness adjustment equipment fails, manual adjustment should be adopted or the LED display should be turned off. When encountering a dazzling LED display in a dark environment, the self-protection measures should be not to look directly at the LED electronic display for a long time or to carefully identify the details of the screen on the LED electronic display, and try to avoid the LED in the fundus after the eyes are focused. Form bright spots and burn the retina.
Protective measures are taken during the design and production of LED full-color display screens. Design and production personnel will touch the LED display more frequently than users. It is necessary to test the LED overload operation status during the design and production process. Therefore, design and production personnel are more likely to be exposed to the strong LED light, and they should pay more attention to and take special protective measures for the design and production of LED display screens. In the process of outdoor high-brightness LED display production and testing, the relevant staff should wear black sunglasses with brightness attenuation 4-8 times before they can watch the details of the LED display at close range. In the process of indoor LED display production and testing, relevant staff must wear black sunglasses with brightness attenuation by 2-4 times. Especially the staff who test the LED display in the dark environment should pay more attention to safety protection. They must wear black sunglasses before they can look directly.
