序章
Do you also think that the LED表示 is an indispensable “big eye” in modern life? We actually need to take good care of these seemingly indestructible displays.
Otherwise, they will “go on strike”! Today, let’s talk about how often the LED display should be turned off to be the most “comfortable”.
目次
1. What is the service life of the LED display?
Theoretically, the life of the LED display can reach 100,000 hours. This data is based on the luminous attenuation characteristics of the LED chip.
Under ideal conditions, the light attenuation of the LED chip is very slow. When its 輝度 decays to 50% of the initial brightness, it usually takes about 100,000 hours.
If calculated based on 12 hours of work per day, 100,000 hours is equivalent to more than 20 years, which reflects the high durability of the LED display under ideal conditions.
In actual use, the LED display can generally be used for 6-8 years. Why? Mainly due to the following reasons:
1). Environmental factors
1.1). Temperature:
If the display is placed in a very hot place, such as in direct sunlight or in a room with poor heat dissipation, it will “heat up” faster.
Just like a mobile phone will become stuck after being used for a long time at high temperatures, the display will also age faster due to high temperatures.
1.2). Humidity:
If the environment is too humid, the electronic components in the display are easily damp, just like metal rusts, and they are easy to break.
1.3). Dust:
Too much dust will block the heat dissipation holes, causing the temperature of the display to rise, making it uncomfortable to use.
2). Use too hard.
If the display is used all day long or turned on and off too frequently, the components inside will be “tired.” Just like a person who never rests, he will definitely not be able to last too long.
3). Quality varies
3.1). Chip quality:
Good chips are durable, and bad chips will not last long. Just like buying a mobile phone, a good chip can be used for several years without any problems, but a bad chip may get stuck in a year.
3.2). Packaging process:
If the packaging is good, the chip will not be easily affected by moisture and heat; if the packaging is poor, the chip will be easily damaged.
3.3). Drive circuit:
If the drive circuit is unstable, the display will have various problems, such as flickering, abnormal color, or even directly broken.
4). Maintenance status
If the dust is not cleaned regularly and the heat dissipation is not checked, the display will easily have problems.
Just like a car that is not maintained, it will break down soon.
Although, in theory, LED display screens can be used for a long time, in practice, they are generally used for 6-8 years.
If you want it to last longer, put it in a suitable place, don’t use it too hard, buy good quality, and then maintain it regularly.
2. What are the effects of shutdown frequency on LED display screens?
1). The impact of frequent shut down in a short period of time
1.1). 電源 shock
Every time the machine is turned on and off, the current will suddenly increase or decrease, which is like a sudden “slam” to the lamp beads and circuits.
Frequent switching on and off will cause this “slam” to be repeated continuously. Over time, the lamp beads and circuits will easily “not be able to withstand” and malfunction.
Just like the lights in your house, if you turn them on and off frequently, the life of the bulbs will be shortened. The same is true for LED displays. Frequent switching will make the components inside “unable to bear it.”
1.2). Thermal expansion and contraction
When the display is turned on, the components inside the display will heat up; when it is turned off, the components will cool down again.
If the display is turned on and off frequently, the components will continue to experience the process of thermal expansion and contraction, just like metal is repeatedly stretched and compressed, and it is easy to loosen.
Imagine that a piece of wire is repeatedly bent and finally breaks. The components inside the display are also like this. Frequent temperature changes will make them loose or even damaged.
2). The impact of not shutting down for a long time
2.1). Aging of lamp beads
If the display is always on, the lamp beads will always be in a high-輝度 working state, just like the light bulb is always on, and it will age faster over time.
After the lamp beads age, the brightness will decrease, and the color will become dull.
For example, if your desk lamp is always on, the bulb will definitely break faster than the bulb that is often turned off.
The same is true for LED displays. Keeping it on will make the lamp beads “retire” early.
2.2). Heat dissipation burden
Continuous operation will generate a lot of heat inside the display screen, and the heat dissipation system needs to work all the time to cool it down.
If the heat dissipation system runs at a high load for a long time, it will easily cause problems, such as the heat dissipation fan breaking down, causing the display screen to overheat.
Just like a car driving at high speed all the time, the engine heat dissipation system will be under great pressure, and it is easy to malfunction over time.
The same is true for the display screen. If it is always turned on, the heat dissipation system will be “tired”.
3). Recommendations for reasonable shutdown frequency
3.1). Turn off for at least 2 hours a day
Let the display screen take a break, let the lamp beads and circuits “take a breath”, and let the heat dissipation system cool down. This can effectively extend the service life of the display screen.
Just like people need to rest every day, the display screen also needs “rest time.” Turning it off for 2 hours a day is a good “maintenance” for it.
3.2). In a high-humidity environment, if the screen body has not been used for more than 3 days, it needs to be preheated
In a humid environment, if the display screen is not used for a long time, it is easy to get damp inside.
Preheating can heat up the components inside the display screen, “drive away” the moisture and prevent the components from being damaged by moisture.
Just like a car in winter, it is easy to get damp if it is not driven for a long time, and starting it can dehumidify. The same is true for the display screen. Preheating the light can prevent moisture.
In general, the shutdown frequency has a great impact on the LED display screen. Frequent shutdown in a short period of time will make the display screen “unable to bear”, and long-term shutdown will make the display screen “tired”.
Therefore, turn it off for at least 2 hours a day, and preheat the light for 3 days in a high humidity environment so that the display screen can be used longer.
3. Shutdown suggestions for different usage scenarios
Indoor LED display screens are used quite frequently, such as ショッピングモール and conference rooms, which are basically used all day and night.
In this case, the shutdown time can be less, but at least 2 hours should be turned off to let the display screen “take a breath” and cool down by the way.
After all, it will definitely heat up after being used for a long time. If it is placed in a too hot or stuffy place, the heat dissipation will be worse.
Moreover, although the indoor environment is relatively better, there will still be dust, and components may have problems.
Therefore, you should check it at least once a month to see if the lamp beads are broken and whether the circuit is loose, and clean the dust. In this way, the display screen will be used for a long time and more stable.
2). Outdoor LED display screen
Outdoor LED display screens are much more “hard”, exposed to wind, rain, and sun, and the environment is particularly harsh.
This kind of display screen is most afraid of moisture and lightning strikes, so moisture-proof and lightning protection facilities must be checked regularly.
For example, if the moisture-proof film is broken, water vapor will easily enter; if the lightning protection device is loose, it is easy to have problems on thunderstorm days.
Especially in the rainy season, the air humidity is very high, and the display screen is easy to “absorbs moisture.”
At this time, it must be used at least once a week to warm up the display screen and “drive away” the moisture inside; otherwise, the components will easily break down.
As for the shutdown time, you can choose according to the actual situation. If you don’t use it at night, it’s okay to shut it down for a few hours, but don’t shut it down for too long, otherwise it will be more damp.
3). High-intensity use scenarios (such as advertising screens)
Advertising screens are high-intensity display screens that are basically on all day and all night, and the screen is particularly bright, all with a white background. This kind of screen has a particularly large loss of lamp beads and a strong current impact.
Therefore, it is best not to use a full white screen all the time and to change to a gradient color or a screen with a shield so that the pressure on the lamp beads can be reduced.
Moreover, the advertising screen is used so hard that the daily rest time should be longer, such as turning it off for 3-4 hours to let the display screen “take a break.”
In addition, if this kind of display screen is used for a long time, the lamp beads will easily age and the color will change.
Therefore, it is necessary to check the picture quality regularly and repair it in time if there is a problem, otherwise small problems will be dragged into big problems, which will be troublesome.
4). Summary
Indoor display screens: Frequent use and less shutdown time, but pay attention to heat dissipation and maintenance once a month.
Outdoor display screens: The environment is harsh, moisture and lightning protection should be required, and it should be used once a week during the rainy season.
High-intensity display screens: Do not use full white screens, take a longer break, and check the picture quality regularly.
4. Other maintenance suggestions
After using the display screen for a long time, dust will definitely accumulate, especially for outdoor displays.
There is a lot of dust in the outdoor environment. If there is too much dust accumulation, it will not only affect the display effect, making the screen look “dusty”, but also may cause a short circuit.
Just like electrical appliances are prone to malfunctions due to too much dust after being used for a long time, the same is true for display screens.
Therefore, outdoor screens should be cleaned of dust regularly, and it is generally recommended to clean them once a month.
When cleaning, you can gently sweep away the dust with a soft brush or wipe it with a slightly damp cloth (but make sure the cloth is not too wet to avoid water ingress).
If there is too much dust, you can also use the cold air of a hair dryer to blow the dust out.
For indoor screens, the environment is relatively clean, but there will still be dust.
Indoor screens can be gently cleaned with a soft brush, such as the soft brush used for paintbrushes, gently sweep across the surface of the screen to sweep away the dust.
Never use a hard brush or wet cloth; otherwise, it is easy to scratch the screen or damage the lamp beads.
If there are stains on the screen, you can wipe it gently with a slightly damp soft cloth, but make sure the cloth is moderately wet and water cannot seep in.
The circuit of the display screen is very important. The power circuit and signal circuit are like the “blood vessels” of the display screen. If they are loose or damaged, the display screen is prone to problems.
For example, a loose power circuit may cause the display screen to suddenly lose power, and a loose signal circuit may cause the screen to flicker or appear distorted.
Therefore, it is important to check these circuits regularly. It is generally recommended to check them every two months.
When checking, check whether the circuit is loose, damaged or aged. If the circuit is found to be loose, tighten it in time.
If the circuit is found to be damaged or aged, it is best to replace it in time. However, it is best to let professionals do this job. Non-professionals should never touch the internal circuits.
Because the internal circuit of the display screen is relatively complicated, it may be damaged if you are not careful, and it may even cause electric shock, which is very dangerous.
If you don’t understand it yourself, find a professional maintenance personnel to check and repair it, which is safer and more reliable.
The environment of the display screen is also very important. It is afraid of both heat and moisture.
High temperature will accelerate the aging of the lamp beads of the display screen, just like the light bulb will break faster if it is used for a long time at high temperature.
The high-humidity environment is not good either. The electronic components inside the display screen are easily affected by moisture, resulting in short circuits or corrosion.
Therefore, try not to place the display screen in a place with high temperature and high humidity.
For example, do not place the display screen in direct sunlight, and do not place it in a place with heavy moisture, such as near the bathroom or near a water source.
In addition, the structure of the display screen is also very important. Especially for outdoor display screens, the screen structure must be firm. If the screen is unstable, it is easy to be dangerous when it is windy and rainy.
Therefore, it is necessary to regularly check the stability of the screen body to see if the screws are loose and whether the bracket is firm.
It is generally recommended that the screen structure be checked once a quarter and the problems be repaired in time to ensure that the display screen is installed stably and safely.
5。結論
After reading this article, do you think that taking care of the LED display screen is not that difficult?
As long as you give it appropriate “rest time,” pay attention to the environment, and do regular maintenance, it will serve you obediently for many years.
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