Mine explosion-proof
Accessories
LED Explosion-proof Lights Definition and Influencing Factors of Light Decay
- 2019-06-29-
1. What is LED light decay The light decay of LED products is the weakening of the signal during light transmission. At this stage, the LED products made by global LED manufacturers have different degrees of light decay. High-power LEDs also have light decay. There is a direct relationship with temperature, which is mainly determined by chip, phosphor and packaging technology. Now, the light decay of white LEDs on the market may be one of the first problems in the march to civilian lighting.
2. Two major factors that affect LED light decay
1) LED quality issues • The selected LED chips are of poor quality and the brightness decays quickly. • There is a disadvantage in the production process, the heat dissipation of the LED chip cannot be well exported from the PIN pin, which leads to the excessively high temperature of the LED chip and aggravates the attenuation of the chip.
2) Problems with operating conditions • LEDs are driven by constant current, some LEDs are driven by voltage to make the LEDs attenuate. • The drive current is greater than the rated drive condition. In fact, there are many reasons for the light decay of LED products, and the key is still the problem of heat. Although many manufacturers do not pay special attention to the problem of heat dissipation in secondary products, the degree of light decay of these secondary LED products will be higher than that of those who pay attention to heat dissipation under long-term use. LED products are higher. The thermal resistance of the LED chip itself, the influence of silver glue, the heat dissipation effect of the substrate, and the colloid and gold wires are also related to light decay. One of the primary problems that white LEDs are currently facing is the lifespan. Since the price of white LEDs is still high, in order to settle down in the lighting market and save electricity and money for users, they must rely on the longevity to save electricity bills. Make up for the high price of lamps. Now, the lifespan of white LEDs makes it difficult to do so. From the perspective of normal use of LEDs, the primary factor affecting the life of LEDs is heat. The sources of heat include the Joule heat generated by the normal resistance of the material when energized, the heat generated by the PN junction, the Joule heat generated by the parasitic resistance brought by the process, and the heat generated after the light is attracted. The accumulation of heat makes the temperature rise, and the temperature rise makes the function of the chip decline, degrade and degenerate.
Benwei Lighting is an LED Tube, LED flood light, LED Panel Light, LED High Bay, LED manufacturer with 12 years of experience. If you want to purchase a high-quality LED flood light or have a more in-depth understanding of the application of LED flood lights, please contact send us inquiry， our web: https://www.benweilight.com/.
