Led explosion-proof lamp is one of explosion-proof lamps. The principle is the same as explosion-proof lamp, but the light source is a LED light source, which refers to the lamps which take various specific measures to prevent the ignition of explosive mixtures, such as explosive gas environment, explosive dust environment, gas gas, etc. Led explosion-proof lamp is an explosion-proof lamp with energy saving, which is widely used in petrochemical industry, coal mine, power plant, gas station and other places. As we all know, led explosion-proof lamps have good energy saving effect and brightness. So what has affected the life of LED explosion-proof lamps, how can maintenance make the benefits * be greatly improved?
The quality of die is the primary condition to determine the life of LED explosion-proof lamp. In the process of manufacturing LED chips, the pollution of other impurity ions and lattice defects will affect the service life of LED chips. Therefore, it is the primary condition to adopt high quality LED chips.
2. the reasonable packaging of the post-treatment will affect the life of the LED. At present, several major companies in the world, such as Cree, lumilendes, Japan Asia and other * * LED packages are protected. These companies require relatively high post-processing packaging, thus ensuring the life of LEDs. However, most enterprises have many imitations on the post-treatment package of LED, which is acceptable in appearance, but its process structure and quality are poor, which seriously affects the life of LED.
3. lamp design is the key problem affecting the life of LED explosion-proof lamp. Besides meeting other indicators of lamps, one of the key problems is the heat generated when the LED is lit. Using Kerry and other original high-quality LED products on different lamps, the life of LEDs can vary several times or even dozens of times. For example, the current market integrated light source lamps (single 30 watts, 50 watts, 100 watts) have poor heat dissipation in the contact part between the light source and the heat sink. As a result, some products have more than 50 percent light attenuation after 1-3 months of light. Because there is no reasonable heat dissipation mechanism after using the small power tube of about 0.07 watts, some products have very fast light attenuation. These products have low technology content, low cost and short service life.
4. The power supply of lamps is very important for the life of LED explosion-proof lamps. Whether the reasonable power of lamps will also affect their service life. Because LED is a current driver, if the power current fluctuates greatly, or if the frequency of the power supply spike pulse is very high, it will affect the life of the light source. The life of power supply itself depends on whether the power supply design is reasonable or not. Under the premise of reasonable power supply design, the life of power supply depends on the life of components.
5. the impact of ambient temperature on the life of LED explosion-proof lamp is currently, the short service life of LED lamp is mainly due to the short service life of power supply, while the short service life of power supply is due to the short service life of electrolytic capacitor. The service life index of electrolytic capacitor has another characteristic: it must explain the service life at the working environment temperature of 105 ℃. The lower the ambient temperature, the longer the service life of the capacitor. Even if * common electrolytic capacitors have a service life of 1000 hours and 64000 hours at 45 ° C, this is enough for ordinary LED lamps with a nominal life of 50000 hours.