What are the factors that affect the service life of LED lamps?

There are four main factors that affect the life of LED lamps.

1) Die quality is the decision.

The primary condition for the longevity of LEDs. At. led

In the manufacturing process, the contamination of other impurity ions, lattice defects and other processes will affect its life, so high quality is used.

LED die is the first condition.

2) Whether the post-process packaging is reasonable will affect the life of the LED.

The post-process packaging of LEDs is reasonable.

The life of the LED. At present, several major companies in the world such as:

Cree, Lumilends, Nichia, etc.

LED packaging is protected by patents, and the post-process packaging requirements of these companies are relatively high.

The life of the LED is also guaranteed. But most businesses.

There are many imitations of LED post-process packaging, which can be seen from the appearance, but its process structure and process quality are poor, which is seriously affected.

The life of the LED.

3) Luminaire design is the influence.

The key issue of the longevity of LED luminaires.

In addition to satisfying the other indicators of the luminaire, a key issue of reasonable luminaire design is to be:

The heat energy generated when the LED is lit is emitted. Will.

High quality from companies such as Cree.

LED originals are used in different lamps, LEDs

Lifespan can vary by several times or even dozens of times. For example, integrated light source luminaires (single.

w、50w、100

w), the contact part of the light source of these products with the heat dissipation channel is not well dissipated, resulting in some products being lit.

After a few months, it causes photodecay.

Above, some products are in use.

After the small power tube around W, due to the lack of a reasonable heat dissipation mechanism, the light decay is very fast. These products have low technical content, low cost and short life.

4) Luminaire power supply is critical to LED lifespan.

Whether the power supply used by the lamp is reasonable will also affect its lifespan. Because.

LEDs are current drivers, which can be affected by large fluctuations in the power supply current or high frequency of power supply tip pulses.

The life of the LED light source. The longevity of the power supply itself depends mainly on whether the power supply design is reasonable. Under the premise of reasonable power supply design, the life of the power supply depends on the life of the components.

Direct-plug LED, also known as plug-in light-emitting diode, is an energy-saving and environmentally friendly lighting material with visible light, and a solid-state semiconductor device that can convert electrical energy into visible light. The luminous principle of LED is to pass the current through the compound semiconductor, through the combination of electrons and holes, the excess energy will be released in the form of light to achieve the effect of luminescence. The wavelength of the light-emitting diode used for visible light is 400 - 700 nm.

Generally, users who buy LED lamps usually consider the service life of lamps, so what are the factors that keep LED lights long? Direct plug LED lamp bead manufacturers summarize the following tips to make the direct LED lamp beads longevity:

1.Power supply: LED lamp power supply is a very important component in LED lamp.

In general, there are two solutions for the power supply part, isolation and non-isolation, the isolation volume is large, the efficiency is low, and it is used in the most inexpensive products. Non-isolated drives are small in size, high efficiency, low heat dissipation, high stability, and high value-added products all use such power supplies.

2.Light source: The light source (LED lamp beads or LED patches) used in LED lamps of the same brightness is different, and even the same type of light source, the quality and quality of different direct LED lamp bead manufacturers are different.

Big brands of LED lamp products basically use good light sources.

3.Heat dissipation: The LED light source is attached to the aluminum substrate with good thermal conductivity, and the heat dissipation of the LED lamp beads and the power supply are separated from each other, so as to ensure the rationality of heat dissipation.

If the quality is poor, the heat dissipation with poor thermal conductivity is used, and even the heat dissipation of LED lamp beads and the heat dissipation of the power supply are shared, resulting in poor heat dissipation and easy damage.

The service life of LED luminaires can reach 60,000 to 100,000 hours, which is more than 10 times longer than the life of traditional light sources.

LEDs are long-lasting because they don't have the problem of fusing filaments. LEDs don't just stop working, but they degrade over time. It has been shown that high-quality LEDs maintain more than 60% of their initial light brightness after 50,000 hours of continuous operation.

Assuming that the LED has reached the end of its rated lifespan, it may still be emitting light, but the light is very faint. In order to extend the life of LEDs, it is necessary to reduce or completely dissipate the heat generated by LED chips. Heat energy is the main reason why LEDs stop working.

It is estimated that the LEDs themselves can last for thousands of hours, but that doesn't guarantee that the LED products will last that long.

Introduction: As a new type of lighting source, LED light source has been favored by the majority of people and strongly supported by the state with the remarkable characteristics of energy saving, health, environmental protection and long life. For customers, the life of light box light strips is one of their most concerned issues, and different manufacturers have different ones.

Although the production process is similar on the surface, we find that the life span of products from different manufacturers is uneven. Let's take a look at what causes the "short lifespan" of the light box light bar.

1. Chips

For advertising companies that are new to the production of light boxes, when choosing for the first time, it is inevitable to encounter unstable performance of the light source, flickering or poor materials for the internal components of the light source, a chip is damaged, and the whole light is not lit. It took a lot of manpower, material and financial resources to replace the light source, and the result was wiped out in less than a year or even half a year, so when we choose the light source, in addition to the comparison, the performance must also be considered.

2. Aluminum substrate

The quality of a product, whether the light decay is serious, and the heat dissipation performance of the aluminum substrate has an inseparable relationship, in the hot summer, the internal temperature of the light box is as high as more than 70 degrees, if the heat dissipation light source is bound to be too high, the LED light source should continue to work in such an extremely harsh environment, the light decay of the ordinary light source is obvious, the phenomenon of dead lights occurs frequently or the power supply can not be started. Therefore, it is necessary to choose a light source with a high heat dissipation coefficient that can adapt to high humidity and high temperature.

3. Drive power supply

Each LED light source needs a corresponding driving power supply. The quality of the driving power supply directly affects the life of the LED light source. The principle of the drive power supply is to use a transformer to reduce the 220V voltage through the transformer to a low voltage, and then rectify it to a low voltage output.

Nowadays, the LED light source market is dazzling, and the products are uneven. In order to reduce costs, some manufacturers directly omit the drive power supply, and here we remind you that this is a high-voltage product. Our country stipulates that all high-voltage products need 3C certification, and this light source directly uses lamp beads in series to produce 220V voltage, and then through a simple capacitor resistance to stabilize the voltage.

For LED products, if they are all made of aluminum-plastic non-all-aluminum, there is no sufficient heat dissipation carrier, and there is no way to avoid the short life of the light source and serious light decay problems. The lamp beads are connected in series, as long as one is broken, the whole lamp will not be lit. Such a lamp is okay in the home room temperature environment.

However, if you use it in a light box, the chance of damage in the summer is greatly increased. Since this design scheme exists, it must also be reasonable, at present, most of this scheme in China is used in civil lighting, we all know that after the installation of civil lighting, we basically can't touch it, so with such a scheme can save a lot of production costs, but if it is in a public place, this scheme is a potential safety hazard.

I hope that when you choose a light box light source, especially when you don't know about the production of the product, you must be cautious, maybe your choice can change a lot of things.

For high-quality lamps, it is not enough to consider radiation, it is also important to be safe and reliable. Fireproof, anti-electric shock, anti-aging, non-toxic and harmless. Yimei Lighting uses high-quality LED lamp beads, exquisite heat dissipation structure, exclusive design circuit and power supply to ensure that the life of the whole lamp is more than 30,000 hours.

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1.In the general instructions, LED lights can be used for more than 50,000 hours, and some manufacturers advertise that their LEDs can operate for about 100,000 hours.

2.The lifespan of LEDs is related to the chip and elderly driver of LED, and the long service life of LED is because it does not produce the problem of fusing filament.

Comparison of LED lights with other bulbs;

LED bulb refers to the light bulb that uses LED as a light source, and its light efficiency is very high, which is the current new type of bulb.

Energy-saving lamps are slightly lower than LED bulbs, and the general light efficiency of energy-saving lamps is 50-65lm The light efficiency itself is very high, and most of them are currently between 100-130lm W, but due to the luminous angle of LED and other problems, the light efficiency of the whole lamp is about 65-80lm W, and the difference between the two is not too big.

Compared with LEDs with the same luminous flux, energy-saving lamps are generally about 2-4 times, and the difference in power is small, and the difference in power is relatively large.

The life of the two is slightly higher than that of LED energy-saving lamps, the life of general energy-saving lamps is 6000-12000h, and the nominal life of LED is 50000-100000h. Due to the uneven quality of those sold in China, it is not possible to make a detailed evaluation. However, the life expectancy is generally the best, that is, the orders for export in these regions are generally about about.

For the problem of vision damage, incandescent light bulbs "energy-saving lamps.

The LED lamp itself is a lamp bead longevity bai

The life is long, but the life of LED lamp beads shrinks rapidly at high DU temperature, and the LED lamp itself needs to work at low voltage (a few volts), and the internal and content workplace is often 220V alternating current, so the driving power supply and driving circuit life of LED lamp can not be ignored.

Summary: Affect the life conditions of LED lamps: heat dissipation, operating temperature, driving power supply and driving circuit.

PS1 : One of the important reasons why LEDs cannot be widely used in a large area is heat dissipation.

PS2: The lamp beads of LED lights are called LED chips, which is more professional.

Guangzhou Hailin's LED lamps are good and have a long life.

The main thing is the chip and the power supply.