Shedding Light on Shadows: Disadvantages of LED Lighting

1.Heat dissipation

The LEDs’ low resistance to heat can affect the lifespan of the wick.

Light perception

The spectrum of light that LEDs emit is among its major drawbacks. This is due to the fact that it’s very harmful for vision. Human eyes cannot observe the same light source for a long period of time, and LEDs suffer from poor rendering of color.

3.Light decay

The LEDs’ light is severely affected. Most LEDs in household lighting is limited in size and is difficult to perform an adequate job of protecting. This is especially true when there are high voltage switches, and large interference.

What is the life expectancy of LED lights?

If there is obvious diminution of light intensity after only one semester of usage, there is likely that there is a quality problem.

Even if it is used for 8 hours a day, the longest term is approximately 1,000 hours, and the lighting will become apparent after a period of 1,000 hours. The truth is that any change isn’t a good thing.

The average LED’s lifespan is about a year.

Let’s first discuss the reasons why this shouldn’t happen. The life span of LEDs typically exceeds 3000 hours. The term “lifetime” refers to the capability to function normally, not its brightness.

LEDs that are more efficient canguarantee the brightness of up to 80% within 5 to 8 years of reliable operation. The average brightness per year is less than 3.3%. This is difficult to spot with naked eyes.

The desk lamp demonstrated obvious brightness changes after 1,000 hours of use, indicating that the attenuation in brightness was extremely serious.

Another drawback of LED lights is that there could be a problem with the circuit, or poor heat dissipation of the light source, which results in severe light attenuation

Why does brightness decrease?

The reason for the decline in brightness is light attenuation

The term “light attenuation” can be understood as a gradual decrease in the light effectiveness of LEDs over time:

The process of dissipating heat from lamps is a key factor in the light attenuation. The greater the dissipation of heat, the more serious the light attenuation;

So, the lifespan of the lamp depends on how long after functioning, the brightness can still be maintained to around 90% of the factory brightness. If the lamps have poor quality, they could show evident changes after 3-5 years;

How can you tell if the brightness is suitable

Illumination of the desk is a prerequisite that can be found in the national standards for writing and learning.

It is best to be between 800-1500Lux. And the minimum cannot be less than 500Lux.

Make use of your smartphone to test the brightness of your computer monitor.

The CPU-Z application can be used to adjust the Sensors column. The column of light is the value that is actually measured by the front light sensor. You can refer to the magnitude of this value. The error is small:

The light source used by LED lights is LED. The ideal lifespan of LED is 100,000 hours.

But, due to a variety of factors such as the materials used for packaging and the application environment, power supply as well as other factors. The service life of LED light sources that have the same quality can be around 30,000 hours. But high-quality ones can go up to the 50,000-hour mark.

LEDs too can experience light loss, even though they are not subject to any other influences. In general, when the luminous flux drops to 80% of the initial light flux, it’s considered that the life of the LED light source is over.

So here we can see that it is normal for the lighting intensity of LED lamps to diminut due to light source, but it is usually a lengthy period of time.

Environments that work, such as humid and high temperatures will have an impact on the lifespan of the source of light, which includes things like the optical design of the lamp.

The LED driving power supply is an additional factor in determining the time-to-life of LED lamps.

The driving power supply of LEDs might not function however the source of light functioning. This is because the parts in the driving power supply are able to last particularly the capacitors within.

Good The price differential is significant between normal capacitors and capacitors. And the lifespan of the capacitor directly influences the lifespan of the power sources that drive it.

A LED requires a power supply that is able to deliver the corresponding current. If the supply of power to drive the light is broken, it may cause the light to blink or even stop lighting up.

The above image is an LCD life test chart created by CREE. This chart shows the amounts of relative luminescence and hours that were measured experimentally.

However, various factors could be significant in affecting the length of time. The test directions from CREE provide only these variables but do not give various charts to represent different variables.

For example, temperature. the standard junction temperature of various LED parameters is 25 °. Above this temperature, life will be reduced.

This figure illustrates that the light intensity will drop to 95% by approximately 6,000 hours, and to 85% after 23,200 hours.

CREE is the very first Echelon of LED products on the market and other products at this stage usually do not exceed it.

The CREE chart can be a helpful tool for reference but the data is based upon laboratory conditions which means that actual usage will be less.

For example: if the light dims to 95 percent after 6000 hours but it could then decrease to 85% or lower after 6000 hours. Heating is the primary cause.

How do you manage to achieve such high-quality conditions to ensure the LED junction temperature is lower than 25 ° Celsius?

LED is reputed to be a light source that is cold, but it actually is incandescent, but the advantages of this thing are now clearly exaggerated.

Even with top-end LEDs such as CREE’s, the luminous effectiveness is just 20 percent. The rest of the 20%+ is utilized to generate heat. In this way what is the temperature?

The thing that most people are worried about is not the light failure, but simply not lighting up, just like the user who shared a picture of the lamp’s mouthLED. The driving circuit is an additional issue.

Most often, LEDs are placed on the ceiling so that the lamp head faces downwards. This is not the best choice for the circuit that drives LEDs.

The reason for this is that at the very least, 80% of the disadvantages of LED light bulbs is the burning the driving circuit on it.

As per the photo of the housing The LED tube probably not damaged. If the integrated LED and driver is being used for downlight the driver circuit is likely to die more quickly.

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