1.Heat dissipation
The LED’s low resistance to heat can affect the lifespan of the wick.
2.Light perception
One disadvantages of LED lights is the pure spectrum of light, but this is a significant disadvantage for visual perception. Human eyes can’t see the same light source for an extended time. LEDs also have poor rendering of color.
3.Light decay
The LEDs’ light is highly affected. Most of the existing LED household lighting is confined in size and is difficult to do a good job in protection. This is especially serious in areas with large voltage toggle and serious interference.
How long will LED lights last? LED lights?
If there is obvious decrease in the brightness after just one year of use, there’s likely that there is a quality issue.
Even if you use it for eight hours every day, the maximum semester will be around 1,000 hours, and the lights will begin to show after 1000 hours of usage. There is no doubt that changing is unavoidable.
The lifespan of LEDs is a long time.
First, let’s talk about the main reasons this should not happen. The lifespan of LEDs is usually greater than 30000 hours. The duration refers to its capability to function normally, not the brightness.
LEDs that perform better are able toguarantee up to 80% brightness after 8 to 10 years of continuous operation. The average brightness per year is less than 3.3%. It’s difficult to see with naked eyes.
After 1000 hours, the desk lamp’s brightness dramatically decreased. This suggests that there is a serious problem.
One of the drawbacks of LED lighting is that it could be a glitch in the circuit or insufficient heat dissipation. This can lead to an extreme reduction in light.
Why does brightness decrease?
The reason for the decrease in brightness is due to light attenuation
The term “light attenuation” could be defined as the gradual decline in the luminous efficiency of LEDs over time:
The process of dissipating heat from lamps is directly related to the light attenuation. The worse the heat dissipation the greater the severity of the light attenuation;
The duration of service is determined by the length of time that the lamp’s brightness is maintained at% or more of its original brightness. In the next 3-5 years, if the lamps are not made to last, there will be visible changes.
How do you determine if the brightness is right
With reference to national standards, for learning and writing, there are requirements for the illumination of desktops:
The minimum amount cannot be lower than 500 Lux.
You can utilize your mobile phone to do an easy test to determine if the illumination on your computer meets the specifications:
Make use of the CPUZ app and alter the column to the Sensors column. The column of light is the measurement made by the front light sensor. This measurement can be used to determine the size. The error is very small:
In general, the source of light used in LED lights is LED. The lifespan of an LED is usually 100,000 hours.
Because of factors like packaging materials, environmental conditions and driving energy supply etc. the life expectancy of LED light sources that meet an established standard is usually around 30,000 hours. The best ones may be 50,000.
Even if the LED is not Affected by other factors, LED itself also has light decay. When the luminous flux decreases to about 80%, the LED is believed to be at its zenith.
So here we can see that it is normal for the luminosity of LED lamps to diminish due to the lighting source, but it is usually a lengthy period of time.
Conditions of work such as high humidity and temperature will also affect the life of the light source, including aspects like the optical design of the lamp.
Another aspect that influences the lifespan of LED lamps is the power supply for the LED’s driving supply.
A disadvantage of LED lights is that the driving power supply may be broken, but the source of light remains great. This is due to the fact that the components of the power supply last for a long time including the capacitors.
Good The cost difference between capacitors and ordinary capacitors is significant, and the life of the capacitor directly determines the longevity of the supply power source that drives it.
The LED is powered by low-current and requires a power supply to provide corresponding current. The driving power supply could be broken, causing the light to blink or not be lit.
The picture above is an LCD life test chart created by CREE. This chart displays the relative values of luminous flux measured experimentally.
However, different elements influence the length of time. The test guidelines from CREE only mention these factors and do not include different charts for different elements.
For example, temperature. the default junction temperature of the various LED parameters is 25 °. The life of the LED will decrease over this temperature.
Based on this data, the light decreases to 95% around 6,600 hours and reaches 85% at 23,200 hours.
CREE is the first echelon of LED products available in the world, and other products in this phase typically do not even come close to it.
This CREE chart has reference significance but it’s based on laboratory conditions after all and the use of it tends to be smaller than the information.
For instance, if the light goes from 95% to 85 percent after 6000 hours, it may actually decay to 85% or less after 6000 hours of use. The primary cause is heat.
What is the best way to get such perfect conditions which ensure that the junction of LED temperature is lower than 25 ° Celsius?
LED is believed to be a light source that is cold, but in reality, it’s incandescent. But the advantages of this thing are now obviously exaggerated.
Even with top-end LEDs such as CREE’s, the luminous efficacy is only 20%. The remaining 80percent+ is used for producing heat. Is it cold in this way?
The thing that most users are concerned about isn’t the light failure, but instead the light not getting lit up, similar to the respondent who posted pictures of the lamp’s mouthLED. There is also the matter of the circuit that drives it.
Usually LEDs are installed on the ceiling, with the lamp head downwards, which is not the best option to the drive circuit of LEDs.
The reason for this is that at least 80% of disadvantages of LED lights is that they roast the circuits that drive the circuit.
According to the picture of the enclosure according to the picture, the LED tube is probably not broken. If the LED integrated with driver is used as a downlight the driver circuit is likely to die quicker.