How to choose a cooling device for LED display?

In the LED display industry, although the word "heat dissipation" is not mentioned at high frequency like pixels and brightness, it plays a decisive role in the stability and service life of the display. Especially in large-screen projects that are bright and run all day, the heat dissipation is not done well, and it is just laying mines for the fault.

Then the question is, how should I choose a heat dissipation device for LED displays? What happens if you choose the wrong one? This article will help you figure it out step by step.

A. Why do LED displays need to pay special attention to heat dissipation?

During the working process of LED displays, a large amount of electricity will be converted into heat energy, especially high-density, large-area and high-brightness displays, which generates amazing heat.

Common problems include:

Brightness drop and color deviation: High temperature operation of LED chips will affect the light efficiency; how does LED chips emit light?

Dead lights, black screens: Long-term high temperatures may directly burn the chip or driver circuit;

Shorten lifespan: It could have been used for 10 years, but after 5 years of use, the screen of lesions was full.

Therefore, the cooling system is the "heart protection mirror" of the display screen, and you cannot be careless at all.

B. What are the common ways to dissipate heat from LED displays?

Natural cooling (suitable for small screens and intermittent operation)

Advantages: Simple structure and low cost;

Disadvantages: Limited heat dissipation ability, strong environmental dependence, and prone to overheating in summer.

Air-cooled cooling (suitable for medium and large indoor screens)

Take heat away with built-in fan or exhaust fan;

Advantages: Moderate cost and easy to install;

Disadvantages: Fans are prone to aging, have high noise, and have high maintenance frequency.

Liquid-cooled cooling (high-end LED or large outdoor screen)

Use circulating liquid to carry away heat;

Advantages: Extremely high heat dissipation efficiency, suitable for outdoor screens in extreme high temperature areas or all day long; provides you with outdoor LED video wall cooling design tips.

Disadvantages: complex structure, high cost and high maintenance costs.

Aluminum substrate + structural thermal conductivity (widely used in small pitch LEDs). What is a fine pitch LED display?

Use aluminum to quickly conduct heat to the shell or bracket to dissipate heat through the contact surface;

Advantages: Strong stability, suitable for long-term high-density operation;

Disadvantages: High requirements for structural design.

C. You need to look at these 5 points when choosing a heat dissipation device.

1. Look at the installation environment

Indoor small screen: natural cooling + fan assistance is given priority;

Outdoor advertising screen: At least air-cooling + good ventilation structure; it will help you understand the ten differences between indoor and outdoor LED walls.

High temperature/desert/tropical areas: It is recommended to use liquid cooling or composite active heat dissipation.

2. Look at the screen density and power

The denser the pixels and higher the brighter the brighter the more heat it generates, the higher the requirements for heat dissipation.

For example, the P1.25 small-pitch full-color screen is dense, and it is far from enough to rely on the fan alone. The structural thermal conductivity + back air duct is reliable.

3. Look at the box material

Preferred choices are made of aluminum alloy die-casting box or high-thermal carbon fiber composite materials, which can quickly bring heat out. Although iron boxes are cheap, they conduct heat slowly and easily accumulate heat.

4. Look at the air duct design

The fan is not just installed, it depends on whether the entire air duct is scientifically designed. The wind flow should be able to smoothly pass through the concentrated area of the heat source to avoid "hot wind spinning" or "dead corners not dissipating".

5. Look at the brand and after-sales service

The cooling modules of high-quality brands often have higher design standards and a more complete testing system. It is recommended to choose a manufacturer with real engineering cases to avoid the vicious cycle of "cheap heat dissipation + high failure rate". How to choose: Top LED brands vs Emerging brands?

D. A few practical tips

If you want to save money, don’t save heat dissipation. Replacing the power supply and lamp beads in the later stage is really a burning money.

Use an intelligent temperature control system to allow the fan or liquid cooling to automatically adjust according to the temperature, which is energy-saving and safe.

Only by doing a good job of dustproof + ventilation + waterproofing can the heat dissipation equipment operate stably for a long time.

Ask one more question: "What is the operating temperature of your plan?" Low temperature operation is the key.

E. Conclusion: Don’t let the heat dissipation drag the LED screen back

To put it bluntly, LED screen cooling device is not an option, but a must. Especially today when pursuing high-brightness, high-brushing and high-stable operation, choosing the right cooling equipment is to buy insurance for the entire project.

Thank you for watching. I hope we can solve your problems. Sostron is a professional LED display manufacturer. We provide all kinds of displays, display leasing and display solutions around the world. If you want to know: Shopping mall vertical LED advertising machine: new offline traffic drainage tool. Please click read.

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