1.Heat dissipation
The low resistance to heat of LEDs can cause issues with the longevity of the wick.
Light perception
One disadvantages of LED lights is the pure spectrum of light, but this is also a serious disadvantage in terms of vision. Human eyes cannot concentrate on a single spectrum of light over a long period as LEDs aren’t efficient in rendering shades.
3.Light decay
The light of LEDs is highly effected. The amount of LED lighting in the home is a problem and it’s not easy to keep them safe. This is especially true in areas with huge voltage switches as well as significant interference.
How long will LED lights last?
There’s a high likelihood that the efficiency of your light bulb isn’t up to par If it begins to dim after one semester.
Even if it is used for 8 hours a day, the longest semester is about 1,000 hours. The light will become obvious after a period of 1,000 hours. The change is definitely not desirable;
The life expectancy of LEDs
The first step is to discuss the reasons why this shouldn’t be happening. The life expectancy of LEDs typically exceeds thirty thousand hours. The term “lifetime” refers only to its capability to function normally, not its brightness.
Better LEDs are able toguarantee 80% brightness after long-term operation of 5-8 years. The average brightness per year is less than 3.3%. It is difficult to discern with naked eyes.
The lamp on the desk showed clear fluctuations in brightness after a period of 1,000 hours of usage, which indicates that the reduction in brightness was extremely serious.
A further disadvantage of LED light sources is that there could be an issue with the circuit or poor heat dissipation from the light source, resulting in significant light loss:
Why does the brightness decrease?
The reason for the decline in brightness is due to light attenuation
Attenuation of light is the gradual decrease in LED’s efficiency in luminous light over time.
The dissipation of heat from lamps is a key factor in the attenuation of light. The more dissipation heat is will be, the more significant the light attenuation will be;
Therefore, the service life will depend on how long functioning, the brightness can still be maintained to around 80percent of factory brightness. If the lamps are not of good manufacturing, there could be evident changes after 3-5 years;
What can be done to determine if brightness of the light is appropriate
Desktop illumination is a requirement which is reflected in the national standards for writing and learning.
It is ideal to be between 800-1500Lux. And the minimum should not be less than 500Lux;
Use your mobile to test the brightness of your computer monitor.
Utilize the CPU-Z application and alter the column to the Sensors column. The value measured by the front-lighting sensors are in the column of light. You can refer to the dimension of this number. The error won’t be too large:
In general, LEDs employ the light source of LEDs. The life span of LEDs is usually 100,000 hours.
Because of factors like packaging materials, application environment, driving energy supply, etc. the service life for LED light sources that meet an optimum standard is generally around thirty-five hours. Good ones can even be 50,000.
LEDs too can experience the effects of light decay even when they are not subject to any other influences. When the luminous flux decreases to around 80%, then the LED is said to be at its zenith.
We can see that it’s normal for LED lamps to dim with time because of their light source. But, it can take an extremely long duration.
Working environments such as high temperature and humidity will also affect the life of the source of light, which includes elements like the design of the optical lamp.
Another aspect that influences the lifespan of LED lamps is the LED driving power supply.
The power supply for driving LEDs might not be working however the source of light is nonetheless working. This is because the components of the power supply last for a long time and the capacitors in.
Good The price difference between normal capacitors and the cost of capacitors is relatively large and the lifespan of the capacitor directly influences the life of the power supply that drives it.
A LED requires a power supply that can provide the corresponding current. If the power supply for driving is damaged, it might cause the light to blink or even not light up.
Below is a diagram of LED life tests from CREE. The chart shows the relative amounts of the luminous flux measured by experiment.
However, different factors influence lifespan. CREE’s test instructions only mentioned these factors but didn’t provide charts for different factors.
Temperature, for instance, is the temperature at which junctions are rated. The life of the LED will decrease above this temperature.
This figure illustrates that the light will dim to 95% within 6,600 hours, and will increase to 85% after 23,200 hours.
CREE is the earliest echelon of LED products in the world and the other LEDs are currently not exceed it.
The CREE chart is a valuable tool for reference, but the data is based on laboratory data which means that actual usage will be less.
If the indicator is 95% after 6000 hrs It could be 85% or lower. The main cause is heating.
How can there be such good conditions to ensure that the temperature of the junction between LEDs is lower than 25 ° Celsius?
LED is reputed to be a light source that is cold, but in reality, it’s incandescent. However, the benefits of this particular technology are clearly exaggerated.
Even for commercial LEDs of the highest quality like CREE, the luminous efficiency is only 20%, and the remainder of 20%+ of the power used to create heat. What is the temperature from this angle?
Many users aren’t worried about the problem with the light source, but the fact that it is not lit. This is the case for the respondent who uploaded an image of the Op E27 lamp mouthLED. There’s also the issue of the circuit that drives it.
Most often, LEDs are placed on the ceiling in a way that the head of the lamp is facing downwards. This isn’t the best choice for the circuit that drives LEDs.
It’s because at most 80% is the fault of the circuitry driving the LED light bulbs.
In the image of the enclosure according to the picture, the LED tube is probably not broken. The driver circuit wears out faster if an integrated LED is used to light the area.