Outdoor Waterproof LED Screen Heat Dissipation




The 2022 Qatar World Cup is being held in full swing. 

Why is the 21st World Cup held in winter for the first time? The main reason for this is that Qatar has a tropical desert climate, the temperature often exceeds 45 degrees Celsius, and winter is the lowest temperature in the year when the temperature is 20-30 degrees Celsius.

So what cooling measures have been taken for venues and outdoor LED displays facing such a high-temperature country? As a Local tycoon, Qatar adopted the most effective heat dissipation method – installing air conditioners + cooling fans.

Of course, this method is not suitable for all regions, so how to effectively dissipate heat for outdoor LED displays?

This article will explain finding a suitable heat dissipation method for your LED display. 

At the same time, understanding the LED display cabinet’s heat dissipation and waterproof design is of great help to your purchase. Let’s learn it quickly!

1. Why does the outdoor LED display get hot?

Do you feel different degrees of heat when you use mobile phones, computers, TVs, and other electronic products?

Therefore, not only will the LED display screen generate heat when used, but all electronic equipment will also generate heat during work, which is a normal phenomenon.

But overheating will easily damage the internal electronic equipment, and an excellent heat dissipation system can prolong the service life of the LED display.

If your outdoor LED display is installed near the equator, strong sunlight and high temperature will affect the cooling system’s effectiveness, so other cooling measures are required.

2.3 main ways to improve the heat dissipation effect of LED display

1) Fan cooling:

This is a common heat dissipation method for outdoor LED displays. It is not only low in cost, but also effective. It is more suitable for installing LED pole screens and high digital billboards because there are no obstacles on the back of the LED display. If the LED display With too little space on the wall, installing a fan may not be the best way to dissipate heat.

2) The material of the LED display

The selected material should have good heat conduction and heat dissipation capabilities.

For example:

  • The use of high thermal conductivity ceramics is beneficial to the heat dissipation of the lamp housing.

  • The heat pipe dissipates heat, which can guide the heat from the LED display chip to the heat sink of the housing.

  • The cabinet’s material is aluminum, which is good for heat dissipation.

  • Thermally conductive plastic shell, increasing the thermal conductivity and heat dissipation capacity of the plastic shell.

  • Surface radiation heat dissipation treatment uses radiation heat dissipation paint to take heat away from the surface of the lampshade through radiation.

3) Air conditioner

Air conditioning is a relatively expensive method, and the cost of purchase and power consumption needs to be considered, but its cooling effect is good.

3. Outdoor LED displays with different areas adopt different cooling and heat dissipation methods

So how to effectively dissipate heat?

First of all, we carry out effective heat dissipation according to the area of the outdoor LED display:

1) LED display within 20 square meters:

This type of outdoor LED display is a small LED display. You can choose a cooling fan of the appropriate size according to the installation space. It needs to be determined according to the size of the installation space.

2) More than 20 square outdoor LED screens:

This type of outdoor LED display is a large-sized LED screen. 

The cooling method should be selected according to the installation method and requirements of the outdoor LED display. If it is installed against the wall, it is necessary to select a cooling fan or install an air conditioner according to the size of the area.

  • Cooling fan

If the LED display screen is installed against the wall, you can choose a cooling fan according to the size of the area.

The cooling fans are installed in the sequence above the side of the led screen, but you need to pay attention to 2 points. 

-The cooling fan is designed with a safety net to prevent maintenance personnel from clothes or other items sucked into the fan to cause personal injury.

-and the other is to install louvers at the air outlet of the exhaust fan, which can play a waterproof role.

  • Air conditioner:

The heat dissipation effect of the air conditioner is very significant, but you need to consider 3 points, 

-The first is that the purchase cost and the use cost will increase,

-The second is that enough space is needed to place the air conditioner,

-And the last is that it cannot affect the wall’s overall appearance; the type of air conditioner is determined according to the size of the area.

  • Cooling fan + air conditioner

The combination of the cooling fan and air conditioner to dissipate heat is mainly determined by the ambient temperature and the LED display screen. 

If it is installed in a place with high temperatures all year If it is installed in an area with high temperature all year round, this combination can be used to dissipate heat.

When the external ambient temperature reaches more than 40°C, the air conditioner can be turned on, and the cooling fan can be turned off.

On the contrary, when the temperature is lower than 40°C, turn on the cooling fan and turn off the air conditioner.

4. How to design the cabinet to improve heat dissipation

A good LED cabinet design can improve heat dissipation and prolong the life of the outdoor LED display, so what should be paid attention to when designing the LED screen cabinet?

The following 9 points can help you identify a good LED cabinet:

1. The air intake hole should be designed on the lower side of the cabinet but not too low to prevent dust and water from entering the cabinet installed on the ground.

2. The exhaust hole should be set near the upper side of the box.

3. The air should circulate from the bottom of the box to the top.

4. The cooling air should flow through the electronic heating parts, and at the same time, it is necessary to prevent the short circuit of the airflow.

5. Filter screens should be installed at the air inlet and outlet to prevent debris from entering the box.

6. The design should make natural convection helpful to forced convection

7. When designing, it is necessary to ensure a sufficient distance between the air inlet and the air outlet and avoid repeated cooling air use.

8. Make sure that the direction of the radiator slots is parallel to the wind direction and that the radiator slots cannot block the air path.

9. According to practical experience, it is better to have a distance of 40mm between the air inlet and outlet of the fan and the obstruction. If there is a space restriction, there should be at least a distance of 20mm.

In conclusion:

The above are effective ways to dissipate heat for outdoor LED displays, and you can judge according to your actual situation, especially in countries located in tropical regions all year round.

A professional outdoor LED display manufacturer will consider the overall design of the LED display screen, which will help prolong the life of the LED screen and improve its competitiveness among its peers.

Therefore, when you purchase an outdoor LED display, you must pay great attention to the heat dissipation part, which is also one of the quality standards for judging the outdoor LED display.

If you have any questions about outdoor LED displays or have a better cooling method for LED display screens, please leave a message below to discuss, or send us an email, and we will answer you as soon as possible.

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