Why does the LED light become darker and darker when used?

After incandescent lights and energy-saving lights, LED lights are now the dominant lighting market. When we buy lights, LED are the first choice. But after using LED lights for a long time, we will find that they will gradually dim. Why do LED lights Is it getting darker slowly? Our Industrial High Bay Led Lighting also has this phenomenon

The dimming of LED lights is actually the light decay that we often say. Luminous decay is the main cause of the dimming of LED lights. The greater the light decay, the faster the LED dims. LED lights are divided into three aspects: driver, chip, and beam from the structure, which are the main reasons that affect the dimming of the light. Take our Industrial High Bay Led Lighting as an example.

  • Drive(power supply)

The drive is what we often call the power supply, which provides a long-lasting and stable current to the LED light beads, because the LED is a relatively sensitive low-voltage semiconductor device, and a qualified drive power supply needs to be considered in many aspects, such as conversion rate, constant current accuracy, Factors such as service life. Use qualified imported constant temperature drive power supply, the current is lasting and stable, can ensure the stability of the light source, and then minimize the light attenuation, if it is unqualified, it will increase the light attenuation, which is what we often say that LED lights are used to dim.


  • Chip

The chip is the luminous body of the LED light, so when the chip is damaged, the brightness of 2ft led industrial high bay light will be weakened, which is what we call dimming the light, which will seriously cause the entire LED light to not light up. The originally imported COB high-brightness chip is used to reduce the light decay from the source, and the light output is uniform and comfortable, more transparent and bright, with long service life and a three-year warranty.


  • Beam 

The light beam means that the brightness of the luminous body is getting lower and lower over time, just like when we use incandescent lights and energy-saving lights daily, they will not light up after use. In fact, this is caused by light decay. Similarly, LED lights have a light decay phenomenon, but it is not so obvious. Such as low-quality LED lights, not only the luminous effect is unstable, the light decay time is shorter and the degree is stronger.


LED beam

LED lights as our Industrial High Bay Led Lighting will have luminous decay to some extent, but the degree of luminous decay is different. The 5% of the luminous decay of LED lights in one year is considered to be within the normal range.

5 key factors affecting the service life of LED lights–Industrial High Bay Led Lighting

The use of LED lights is getting higher and higher. Commercial lighting and ordinary households have gradually become popular for use. Everyone knows that LED lights have a long service life, but they don’t know the 5 major factors that affect life. Let’s analyze the most affecting LED 5 key factors in the service life of lights.


1. LED Light service life

Compared with other light sources in many applications, LED are undoubtedly superior. In order to keep the system in good condition, the following 5 factors need to be considered.


2. Effectiveness

LED lights and LED modules are manufactured and driven within a specific current range. According to its characteristics, LED with currents ranging from 350mA to 500mA can be provided. Many systems are driven in the high-value region of this current range.


3. Acidic conditions

Under some acidic conditions, LED are also easily affected, such as in coastal areas with high salt content, in factories that use chemicals or manufacturing products, or in indoor swimming pools. Although LED are also manufactured for these areas, they must be carefully packaged in a fully enclosed enclosure and have a high IP protection level.


4. Heat dissipation

Heat affects the luminous flux and life cycle of LED. The radiator can prevent the system from overheating. The heating of the system means that the allowable ambient temperature of the LED light has been exceeded. The life of the LED depends on the ambient temperature.


5. Mechanical stress

When manufacturing, stacking, or simply operating LED, mechanical stress will also affect the life of the LED light, and sometimes even completely destroy the LED light. Pay attention to electrostatic discharge (ESD), as this can cause short but high current pulses that can damage the LED and LED driver.


6. Humidity

The performance of LED also depends on the humidity of the surrounding environment. Because in a humid environment, electronic equipment, metal parts, etc. tend to be quickly damaged and begin to rust. Therefore, try to avoid moisture in the LED system.

Is the lifespan of LED light really long?

One of the most important selling points of LED lights and lanterns is a long life, which can be used for up to 10 years and about 50,000 hours. Is it true? Let’s explore it below.


The core component of LED lights is the Light Emitting Diode, which is a common electronic device that emits energy through the recombination of electrons and holes to emit light. His theoretical life expectancy is basically the same as the data stated in the merchant’s propaganda, and the life expectancy is about 50,000 hours. However, the life of LED lights cannot be simply replaced by the life of light-emitting diodes. There are many factors that affect the overall life of LED lights. One of the key aspects is the radiator.


Although the life expectancy of the light-emitting devices of the LED light is very long, the performance of the heat dissipation design of the light holder and the circuit board is uneven, which causes the overall life of the LED light to varying greatly.


In order to convert alternating current into direct current, the circuit board of the LED light needs to be equipped with an electrolytic capacitor. The electrolytic capacitor has a structure similar to a battery, so it is prone to failure at high temperatures. Especially for bulb-type LED, heat is more likely to accumulate in the socket components, causing malfunctions. Even if the life of the LED itself is very long, if the circuit board component fails, it will not be energized and will not emit light.


There is an interesting phenomenon in the heat dissipation of LED lights. If the temperature of the heat sink of the LED light is not high, it does not mean that the heat dissipation is well controlled, because the internal heat may not be conducted. If the temperature of the heat sink of the LED light is high, it should not be taken lightly, because the internal temperature of the LED light may be higher at this time.


As a solution, we’d better choose LED lights with heat-resistant performance. Although this will further increase the cost, it can guarantee a long service life and realize cost-sharing. In the long run, the cost will be lower than that of ordinary lights. Or LED lights without heat resistance.


Therefore, heat dissipation is an important consideration when we purchase LED lights. Factors that affect heat dissipation include the design, material, and weight of the radiator. You need to pay more attention when purchasing.