What factors affect the life of LED explosion-proof lights
Datetime: 2021-04-08 16:25:16
LED explosion-proof lamps refer to lamps with various specific measures taken to prevent the ignition of surrounding explosive mixtures, such as explosive gas environments, explosive dust environments, and gas gases. It is a kind of explosion-proof lamp, and its principle is the same as that of explosion-proof lamp, except that the light source uses LED light source. LED explosion-proof lamps are currently the most energy-saving explosion-proof lamps, widely used in petrochemicals, coal mines, power plants, gas stations and other places.
Several factors affecting the life of LED explosion-proof lamps:
1. The primary factor is the impact of die quality on the life of the LED explosion-proof lamp:
In the manufacturing process of LED chips, other impurity ion pollution, lattice defects and other technological processes will affect their life, so the use of high-quality LED dies is the primary condition.
2. Lamp design affects the reasonable design of LED lamps. In addition to meeting other indicators of lamps, a key issue is to dissipate the heat generated when the LED is lit. Using high-quality original LED products from companies such as Cree on different lamps, the life span of LEDs can vary several times or even dozens of times. For example, the integrated light source lamps on the market (single 30 W, 50 W, 100 W), the light source of these products and the heat dissipation channel contact part of the heat is not smooth, as a result, some products cause light after 1-3 months of lighting. The decay is more than 50%. After some products use a low power tube of about 0.07 W, because there is no reasonable heat dissipation mechanism, the light decays very quickly. These products have low technical content, low cost and short life span.
3. Lamp power supply is very important to the life of LED explosion-proof lamp:
Whether the power supply of the lamp is reasonable will also affect its life. Because LED is a current-driven device, if the power supply current fluctuates greatly, or the frequency of power 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. On the premise of reasonable power supply design, the life of the power supply depends on the life of the components.
4. The influence of ambient temperature on the life of LED explosion-proof lamp:
The current 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 index of electrolytic capacitors is that it must indicate the life under the working environment temperature of how many degrees, and it is usually specified as the life under the ambient temperature of 105 ℃. The lower the ambient temperature, the longer the service life of the capacitor. Even the most common electrolytic capacitor with a lifespan of 1,000 hours can reach 64,000 hours at an ambient temperature of 45°C, which is enough for ordinary LED lamps with a nominal 50,000 hours. Used it.