مقدمة
When installing شاشات عرض LED in underground parking lots, humid environments are undoubtedly a major challenge.
Moisture on the screen not only affects the display effect but may also cause malfunctions and increase maintenance costs. So, how to ensure the stability and service life of LED display screens in humid environments?
جدول المحتويات
1. Why are underground parking lots prone to moisture?
Underground parking lots are usually located underground in buildings, surrounded by walls and ground, and air circulation is difficult to circulate.
Fresh air cannot come in, humid air cannot be discharged, and moisture is easy to accumulate.
If the ventilation system is not well designed or the equipment is old, humid air cannot be discharged, and the moisture problem becomes more serious.
The underground parking lot is next to the soil, and there is a lot of moisture in the soil. This water will seep in from the small cracks in the walls and the ground, making the air humid.
Moreover, the parking lot is relatively cool inside. When the warm and humid air outside comes in, it encounters the cold walls and ground.
And the water vapor turns into water droplets and attaches to things, making the parking lot more humid.
If there is heavy rain, rainwater may flow in from the entrances and exits of the parking lot, vents, or holes in the drain pipes, making the ground and walls wet.
If the drainage system is not well designed or blocked, the accumulated water cannot be drained, and the parking lot will always be humid.
The temperature in the parking lot is low, but the LED equipment will heat up when it is running, and the shell temperature is high.
After the equipment is turned off, the shell temperature drops suddenly, and when it encounters the surrounding humid air, the water vapor will condense into water droplets on the surface of the equipment, making the equipment damp.
2. What are the effects of a humid environment on LED display screens?
The impact of a humid environment on LED display screens is not small, mainly reflected in the following aspects:
1). Circuits are prone to problems
In humid places, water vapor in the air will stick to circuit boards and electronic components.
Water can conduct electricity, which can easily cause circuit short circuits, especially in places with high voltage and high current, where the risk is greater.
Moreover, humidity can also cause electronic components to rust, especially those metal pins and solder joints, which will have poor contact and increased resistance, making it easy to fail.
What’s worse is that moisture can also make the insulation performance of the circuit board worse, which can easily easy to leaking electricity.
Not only is the equipment easy to break, but it may also cause an electric shock.
2). Lamp beads are easy to turn black, and the light becomes dim
Moisture is particularly harmful to LED lamp beads. The structure inside the lamp beads is very delicate, and water vapor can easily get in, causing the phosphor and chip inside to get damp.
In this way, the phosphor will not emit light effectively, the chip performance will also deteriorate, and the light will become dimmer and dimmer.
Moreover, water vapor will also age the shell of the lamp beads. Over time, the lamp beads will change color or even turn black, and the display will look very bad.
3). Control cards and connectors are easy to break
Moisture can cause metal parts such as control cards and connectors to rust. After rusting, the contact resistance will increase, the signal cannot be transmitted, or even break down directly.
Moreover, moisture will cause moisture on the surface of the circuit board, and the signal will easily go wrong during transmission, and the display effect will deteriorate.
If it gets wet, the plastic shell of the connector may expand or deform, the plug and socket will not be in good contact, and the signal will be even worse.
4). Shortened display life and increased maintenance costs
The humid environment has a great impact on the life of the LED display. Because of the humidity, various parts of the display are prone to break, the service life will be shortened, and parts need to be repaired or replaced frequently.
In this way, the maintenance workload increases and the maintenance cost goes up. Frequent repairs and replacement of parts will not only affect the normal use of the display, but also cost you more money.
3. The core protection measures for LED screens to deal with humidity
In humid environments, choosing وحدات LED with high protection levels is the key. IP65 and IP67 are common protection levels.
IP65 can prevent dust from entering and resist low-pressure water jets, which is suitable for general humid environments.
IP67 can be immersed in water for a short time without being affected, which is suitable for more severe humid environments.
The module with a high protection level is like putting a layer of “waterproof clothing” on the LED screen.
Which can effectively prevent water vapor and dust from entering the module, protect the internal circuit and lamp beads, and allow the display screen to work normally in a humid environment.
ال مزود الطاقة and control system are the “heart” of the LED display. Once damp, the entire display may “go on strike”. Therefore, they should be closed and moisture-proof.
The power supply and control system can be wrapped with a sealed shell to prevent moisture and water vapor from getting in. Install a waterproof rubber ring at the interface to ensure that the interface is sealed.
You can also fill the gaps in the power supply and control system inside and use moisture-proof materials to reinforce the moisture-proof performance.
In this way, even if it is humid outside, the power supply and control system can remain dry and work normally.
Moisture-proof cabinets and sealing strips are “shields” to prevent moisture intrusion.
Add a moisture-proof cabinet to the LED display, wrap the entire display, form a relatively closed space, and reduce moisture contact.
Install sealing strips at the joints of the box and the frame of the display screen to ensure the sealing effect. The sealing strips should be weather-resistant and elastic.
For example, silicone sealing strips can keep the seal for a long time.
With a moisture-proof box and sealing strips, it is difficult for moisture to invade the interior of the display screen.
The PCB board is an important component of the LED display screen, and it is easy to make it “sick” in a humid environment.
Apply a layer of “protective film” to the PCB board with three-proof paint (moisture-proof, mildew-proof, and salt spray-proof) to prevent water vapor and dust from adhering to the circuit board and reduce the risk of corrosion and short circuit.
When applying three-proof paint, evenly cover the entire PCB board, especially the key parts such as solder joints and electronic component pins.
In this way, the PCB board can maintain good performance in a humid environment and extend its service life.
Improving the humidity of the micro-environment is a good way to deal with a humid environment.
Install a dehumidifier in the installation environment of the LED display screen to regularly remove moisture from the air and reduce humidity.
Then install the air supply equipment, exhaust the humid air through ventilation, introduce dry air, and keep the environment around the display dry.
You can also install a humidity sensor, and when the humidity exceeds the set value, the dehumidification and air supply system will be automatically started.
In this way, the display can always stay in a dry environment, reducing the trouble caused by humidity.
4. Moisture-proof details during the installation and construction phase cannot be ignored
When installing the LED display, the small details of moisture-proofing must not be sloppy; these small details can help the display bear longer in a humid environment.
The following are the moisture-proof points that need to be paid attention to during the installation phase:
1). The ground and the wall must be separated from the moisture
Before installation, the moisture problem of the ground and the wall must be solved first. The ground and the wall are the “base camp” of moisture, especially in basements or humid places.
You can use a moisture-proof mat to separate the display from the ground, just like laying a layer of “waterproof mat” for the display.
Or install the LED display overhead, so that the bottom of the display can be ventilated, and moisture is not easy to accumulated. In short, keep the moisture out of the root.
2). When wiring, do not let the wires “run naked”, wrap them with waterproof tubes and grooves
When wiring and routing, do not let the wires and signal lines “run naked”. In a humid environment, wires exposed outside are easily damp, which may cause short circuits or signal interruptions.
Therefore, it is necessary to wrap the wires with waterproof tubes and grooves, which can not only prevent water vapor but also prevent the wires from being damaged.
It would be better if you could use cables with good waterproof performance, which will provide an extra layer of protection.
3). The seams and interfaces must be sealed well
The seams and interfaces of the display are the places where moisture is most likely to “drill loopholes”. During installation, these places must be sealed well.
The seams between the cabinets should be tightly sealed with high-quality sealing strips, leaving no gaps.
The power interface and signal interface should be sealed with waterproof rubber rings or sealants to prevent moisture from slipping in through the interface. If these small details are in place, it will be difficult for moisture to enter.
4). The installation position should be higher, avoiding low-lying areas with accumulated water
The installation position is also very important. In humid places, low-lying areas are prone to water accumulation and heavier moisture.
Therefore, when installing, try to choose a higher position and avoid low-lying areas with water accumulation.
If there is really no way to avoid it, add a waterproof baffle under the display screen, or think of other waterproof methods.
When installing, do these small moisture-proof details well, and the display screen will be more “tough” in a humid environment, last longer, and save a lot of trouble in future maintenance.
5. How to choose an LED screen suitable for a humid environment?
1). Clearly check the product protection level and test report
When buying an LED screen, you must first check its protection level. This level is very important and can tell you whether the screen can withstand a humid environment.
For example, IP65 and IP67. IP65 can prevent dust and low-pressure water columns, suitable for general humid places; IP67 is more powerful, and it is fine to soak in water for a short time.
In addition to looking at the level, you should also see if there is a test report issued by an authoritative organization to prove that the screen is indeed moisture-proof, waterproof, and dust-proof.
These reports are like the “physical examination report” of the screen, which can give you a bottom line.
2). Give priority to fully enclosed cabinets or magnesium-aluminum alloy cabinets
In humid environments, the “shell” of LED screens is very important. A fully enclosed cabinet is like putting on a “moisture-proof armor” for the screen, which can keep moisture and dust out and protect the circuits and lamp beads inside.
It would be better if you could choose a magnesium-aluminum alloy cabinet. This material is not only light but also very strong and not afraid of corrosion.
It can be used for a long time, even in a humid environment. It can also help the screen dissipate heat and make the screen last longer.
3). Ask the manufacturer whether it has experience in humid scene applications
When looking for a manufacturer, don’t forget to ask them if they have experience in using LED screens in humid environments.
For example, in places like basements and the seaside, experienced manufacturers will definitely know how to make the screen work properly in humid environments.
You can ask them to show you previous cases to see how their products perform in actual environments. Experienced manufacturers will have more reliable product design and after-sales service.
4). Evaluate the after-sales response mechanism and warranty terms
In a humid environment, the probability of LED screen failure may be higher, so the manufacturer’s after-sales service is very important.
Check whether they can respond in a short time and whether they have sufficient technical support and maintenance services.
Don’t forget to check the warranty terms carefully to confirm whether the warranty covers failures in humid environments.
Some manufacturers may provide additional warranty for this special environment, which is a great guarantee.
6. الخاتمة
Through the above content, we have a comprehensive understanding of the impact of the humid environment of underground parking lots on LED displays and coping strategies.
I hope this practical information can help you choose the right moisture-proof measures to ensure that the LED display can also operate stably in a humid environment.
أخيرًا، إذا كنت تريد معرفة المزيد عن شاشات LED، يرجى الحصول على اتصال معنا.
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