Shenzhen Lianchengfa Technology Co., Ltd.

What effect does high temperature work have on the LED large screen?

In today's growing number of LED large screen applications, in order to give full play to the advantages of large screens, users should understand the maintenance of large LED screens. Whether it is an indoor LED display or an outdoor LED display, heat will be generated during the working process, and the heat generated will increase the temperature of the large LED screen. However, do you know the impact of high temperature operation on large LED screens?

Under normal circumstances, the indoor LED large screen generates less heat due to its low brightness, and will naturally dissipate heat. However, due to the high brightness of the outdoor LED large screen, it will generate a lot of heat, which needs to be dissipated by air conditioners or axial fans. Because the large LED screen is an electronic device, the elevated temperature will affect the attenuation of the LED lamp beads, thereby reducing the working efficiency of the driver IC and shortening the service life of the large LED screen.

LED large screen open circuit failure: The operating temperature of the LED display exceeds the load temperature of the chip, which will rapidly reduce the luminous efficiency of the large screen, resulting in obvious brightness attenuation and damage. The large LED screen is mainly made of transparent epoxy resin. For packaging, if the junction temperature exceeds the solid phase transition temperature, the packaging material will become rubber, and the thermal expansion coefficient of the LED large screen will increase sharply, resulting in an open-circuit failure of the large LED screen. Excessive temperature will affect the light attenuation of the LED large screen. The lifespan of a large screen is reflected by the decay of the LED, that is, the LED will degrade over time until it disappears. High temperature is the main reason for the light attenuation of LED large screen, which will shorten the life of LED large screen. Different brands of LED large screens have different attenuations.

Common LED screen cooling methods?

Due to climate reasons and its own operation, the large LED screen will generate a certain amount of heat after 30 minutes of continuous operation. If the large LED screen runs at high temperature for a long time, the power supply, lamp beads, driver chips and wires will accelerate aging, resulting in a shortened lifespan of the large LED screen and a high failure rate.

Lianchengfa LED display manufacturers warm reminder: the correct way is to take ventilation and cooling measures for the LED large screen. It is recommended to install air conditioners of more than 20 square meters outdoors. If it is inconvenient to install the air conditioner, two axial fans must be installed for air convection. If it is an outdoor column LED screen or the seat faces east to west, due to the sun in summer, the screen will heat up. It is recommended to turn it on for 4 hours and turn it off for half an hour to protect the heat. The standard for installing outdoor LED large screens is to install a 2P air conditioner every 20 square meters.

Indoor LED large screen is better. Since there is no sunlight, the installation location of the screen is usually a place where people often walk. Usually there is air conditioning for cooling. Indoor LED large screens should be kept in a dry environment, and liquids should not be spilled on the screen surface. The weather in the south is humid, and it is necessary to ventilate in the season when returning to the south to prevent short circuits.