1. The quality of the die is the primary condition for determining the life of mining explosion-proof lamps
In the manufacturing process of LED chips, the contamination of other impurity ions, lattice defects and other process processes will affect their lifespan, so the use of high-quality LED chips is the primary condition.
2. Whether the post-process packaging is reasonable and affects the life of the LED
Whether the post-process packaging of the LED is reasonable affects the life of the LED. At present, several major companies in the world such as Cree, Lumilends, Nichia and other high-level LED packaging have patent maintenance. These companies have relatively high post-process packaging requirements, and their LED lifespan is guaranteed. However, most companies have a lot of copies of LED post-process packaging, which is OK in terms of appearance, but their process structure and process quality are poor, which seriously affects the life of LEDs.
3. Lamp design is the key issue that affects the life of mine explosion-proof lamps and lanterns
In addition to satisfying other indicators of the lamps, a key problem is to emit the heat energy generated when the LED is lit. The high-quality original LED products of Cree and other companies are used in different lamps, and the LED lifespan can vary several times or even dozens of times. For example, for the integrated light source lamps currently on the market (single 30 W, 50 W, 100 W), the light source and the heat dissipation channel of these products have poor heat dissipation, resulting in some products causing light after 1-3 months of lighting. The light decay is more than 50%. After some products use a small power tube of about 0.07 W, because there is no reasonable heat dissipation structure, the light decay is very fast. These products have low technical content, low cost and short life span.
4. Lamp power supply is very important to the life of mining explosion-proof lamps and lanterns
Whether the power supply of lamps and lanterns is reasonable will also affect their lifespan. Since LEDs are current-driven devices, if the power supply current fluctuates greatly, or the frequency of power supply spikes is high, it will affect the life of the LED light source. The life of the power supply itself mainly depends 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.
5. The influence of ambient temperature on the life of mine explosion-proof lamps
Now the short life of LED lamps is mainly due to the short life of the power supply, and the short life of the power supply is due to the short life of the electrolytic capacitor. Another feature of the life indicator of electrolytic capacitors is that it must indicate the life at which operating ambient temperature, and is generally specified as the life at an ambient temperature of 105°C. The lower the ambient temperature, the longer the life of the capacitor. Even if the electrolytic capacitor with a lifespan of 1,000 hours is more common, the lifespan can reach 64,000 hours at an ambient temperature of 45°C. For general LED lamps with a nominal life of 50,000 hours is enough.
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