Exploring the Disadvantages of LED Lights

Home » led lights » Exploring the Disadvantages of LED Lights

1.Heat dissipation

The low resistance to heat of LEDs may cause issues with the lifespan of the wick.

Light perception

The spectrum of light that LEDs emit is among its major disadvantages. This is because it’s very harmful for vision. Human eyes are unable to see only a single color spectrum light source for a long duration, and LEDs also have poor quality of rendering.

3.Light decay

The light of LEDs is severely effected. Most of the existing LED household lighting is constrained by size, and it is hard to do the job effectively in protecting. This is particularly problematic when there are huge voltage switches as well as significant interference.

How long do LED lights last?

If there is a clear decrease in the brightness within a single semester of use, there is likely that the issue is due to a quality issue.

Even if the device is utilized for eight hours per day, the total semester is about 1,000 hours. The lights will begin to show after 1,000 hours of use. The change is definitely not desirable;

The life expectancy of LEDs is the same as that of regular bulbs.

Let’s first discuss the reasons why this shouldn’t happen. The life expectancy of LEDs typically exceeds 30,000 hrs. The duration refers to its capability to function in a normal manner and not the brightness.

Better LEDs canguarantee an 80% brightness following long-term operation of 5-8 years. The average annual brightness is less than 3%. It is difficult to detect with the naked eye.

The desk lamp demonstrated obvious fluctuations in brightness after a period of 1,000 hours of usage, which indicates that the brightness attenuation was a serious issue.

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

What causes the decrease in brightness?

The reason behind the decrease in brightness can be traced to light attenuation;

The term “light attenuation” can be defined as the gradual decline in the luminous efficiency of LEDs as time passes:

Attenuation of light is closely linked to the process of dispersing heat in lamps. The greater the dissipation of heat the greater the severity of the light attenuation;

Therefore, the service life depends on how long after working, the brightness can be maintained at 90% of the factory brightness. If the lamps are of poor quality, they could show visible changes after 3 to 5 years;

How to judge whether the brightness is suitable

Desktop illumination is a requirement that is included in national standards for learning and writing.

It is recommended to have between 800-1500Lux. And the minimal amount should not be less that 500Lux;

You can utilize your phone’s mobile to perform simple tests to find out whether the light on your computer meets the requirements:

The app CPU-Z can be used to alter the Sensors column. The value that is measured by front illumination sensors are in the column of light. The value is used to determine the size. The error will be tiny:

In general, LEDs utilize LEDs as their light source. The life span of LEDs should be at least 100,000 hours.

Based on factors like packaging materials, environment for application, driving energy supply, etc. the life expectancy of LED light sources that meet an established standard is usually about 30,000 hours. Good ones can even reach 50,000.

However, even if it’s not Affected by other factors, LED itself also has light decay. When the luminous flux drops to 20% of the original luminescence, it is thought that the life span of the LED light source is over.

So here we can see that it is normal for the light intensity of LED lamps diminut due to light source, however it generally takes a long period of time.

The lifespan of the light source is dependent on other factors such as optical design as well as the environment, such as the humidity or temperatures.

The LED’s power supply is another important factor that determines the lifespan of LED lamps.

A disadvantage of LED lights is that the that the power source driving the light may be broken, however the source of light remains excellent. This is because the parts of the power supply can last for years and the capacitors in.

Good The cost difference between ordinary capacitors and capacitors is significant The life span of the capacitor directly determines how long the life of the power supply for driving.

A LED requires a power supply that is able to deliver the required current. If the driving power supply is damaged, it can cause the light to blink or even stop lighting up.

Above is a chart of the life test results for LEDs from CREE. This chart displays the respective value of the luminescent flux determined experimentally.

But, various factors can influence lifespan. The test instructions provided by CREE only discuss these elements but do not give different charts for the various elements.

Temperature, for example, is the default junction temperature. The lifespan will be diminished above this temperature.

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

CREE is the very first Echelon of LED products available in the world and the other LEDs currently do not even come close to it.

The CREE chart is a valuable tool for reference, but it is based on laboratory data which means that actual usage will be less.

If the LED is 95 percent after 6000 hours the possibility is that it’s 85or less. The main cause is heating.

How can there be such perfect conditions to ensure the junction temperature of LEDs stays below 25 ° Celsius?

The advantages of LED are overstated.

Even with high-end LEDs, like CREE’s, the luminous efficiency is only 20%. The remaining 20%+ is utilized to generate heat. In this way does it really matter if it’s cold?

Actually, what the majority of users are concerned about isn’t the light failure, but rather the lamp not glowing, as did the user who shared an image of the lamp’s mouthLED. The driving circuit is an additional issue.

Most often, LEDs are placed on the ceiling, so that the head of the lamp is facing downwards. This isn’t the best choice for the LED drive circuit.

It’s because, at the very least, 80percent of the problem is due to the design of the circuitry that powers LED light bulbs.

As per the photo of the housing according to the picture, the LED tube is probably not broken. If the integrated LED with driver is being used for downlight, the driver circuit will die quicker.

Comments are Closed

© 2024: lighting for project | Easy Theme by: D5 Creation | Powered by: WordPress