How to identify whether LED lamps are durable

Aluminum housing radiator affects the life of the LED In addition to electronic components, there is a very important component, that is, the aluminum housing of the lamp, because the working temperature of the LED lamp has a great influence on the life of the chip and the power supply, and the operating temperature of the general LED chip is stable. It's better to stay within 50 degrees Celsius. For every 10 degrees Celsius increase, the life expectancy will be reduced by half. If it is 50 degrees Celsius, it will only have one-third of its life span. Therefore, the high quality LED lamps, heat dissipation is a very important issue. But are LED lights really long live now? Not really! Inferior LED lamps are not even more durable than incandescent lamps! One: Power First, the power supply is the heart of the LED. The quality of the power quality is not only about the life of the power supply itself, but also determines the life of the LED lamp beads. The life of the LED lamp beads is usually very long, then the actual LED lighting The service life is often determined by the LED power supply. Therefore, the LED power supply is good or not, which is the most critical factor in determining the service life of LED lamps. The sun-shaped heat sink is separated from the base and has a small contact area (some products with poor workmanship do not even contact), so the heat dissipation efficiency is low, but due to low production costs, it is also widely used by products. The cost is high, but due to the integrated structure of the heat sink and the base, the heat dissipation efficiency is high, so this style of lamp life is longer and more popular with users.

Aluminum products also have an advantage, that is, after surface oxidation, the oxide film is more dense, can protect the internal corrosion, but some manufacturers in order to save costs, the aluminum shell is not made directly through the oxidation of finished products, Or simple oxidation, can not fully protect the aluminum parts, easy to use after a period of time corrosion.

In addition, the cooling performance of LED lamps is of utmost importance. As for some products with plastic housings, whether the heat dissipation performance is up to standard or not, it is suspicion. It is worth reminding that the appearance touch of such a lamp is not hot, and it is likely that the heat dissipation is separated from the lamp. Can not come out. Three: LED lamp beads LED lamp is the core of course, LED lamp beads, LED lamp beads are mainly good or bad from the chip brand, chip size, color temperature consistency and other considerations, usually, LED lamp beads are the theoretical life of 50,000 hours, or even Longer, but its actual life is affected by parameters such as operating temperature, operating current and voltage. The high-power 1W lamp beads used in poor quality products are actually made from scrap materials. They are small in size and have a nominal power of only 0.5W. They don't care about the quality of the products. They increase the brightness by increasing the operating current. The nominal current is 200MA. Forced to increase to 350MA or even higher, so even a low-quality 0.5W chip can achieve good brightness early in use. However, this method of seedling growth will not only seriously affect the life of the chip, speed up the decline of the chip, but also increase the heat of the lamp beads. The lamp made of this kind will be difficult to find in the early stages of use. After six months of actual use, the quality problem has obviously Plus, the light fades badly, and even after one year it will turn into a weak firefly even if it is not damaged. Poor lamp replacement frequency is high, time and money are needed, and when purchasing LED lamps, it is necessary to consult the warranty time of LED lamps. The warranty of more than 3 years is of good quality, and the warranty of one year is in line with national regulations. When lighting fixtures, they must give priority to quality considerations on price considerations.