Hold On! LED Light Is Not Almighty

December 2, 2011 | Author: | Posted in Consumer Electronics
  • It’s “cool”. The output from LEDs consists of no infrared radiation which warms up the enviroment. Their heat is generated within the junction, which is dissipated by heat sinking.
  • It lasts longer. Average rated life, as quoted by manufacturers, is generally 30,000 to 50,000 hours based on the product in question.
  • Nevertheless, the drawbacks are apparent, which is typical in MR16s:

    1. It’s efficient but not effective. Typical LED MR16 consumes less than 6 Watts with 1 to 6 high energy LEDs. But halogens can go up to 100 Watts. So it really should be ten to 15 occasions more effective than halogen to make a excellent win, which is not practical right now. Then how about growing the quantity of LEDs to make it stronger? No, it’s pretty much the ultimate limit for the restricted round plate of 50mm. The causes are detailed beneath.
    2. It’s cool and hot. LED gives cool light but suffers from heat. That is, the heat generated from its junctions can impair itself severely. And locating LED systems in an insulated and relative tiny space(around 50mm by 50mm for MR16) will most likely result in elevated junction temperature and degraded performance. So it is essential to conduct heat away or try to create much less heat in design. Even so, MR16 format of restricted dimension constrains the flexibility and further optimization of its heat sinking systems. To compromise, some designers would even downgrade LEDs to 80% of the rated current or performance to preserve the stability and lifespan, not to mention rising the total quantity.
    3. It does not last as extended as it need to be. In other words, LED systems can’t perform in the required optimal atmosphere in quite a few situations. The ambient temperature or other elements from electricity, such as overcurrent, electric shocks, can be adverse to the system. Moreover, MR16 suffers not only from external imperfection but also inborn deficiency as mentioned above.

    In general, we would be positive in this innovative technology with the hope to price less in energy and dollars. However, it’s not convincing that LED lighting is or will be almighty as the only player for illumination. Looking back into lighting evolution, there was no such a thing that absolutely avoid its counterparts from shining for human, even the ancient torches or candles have their own place to play. But to be honest, it’s not bad to let LED lead in lighting for a greener world.

    This post tells how to classify the a variety of LED lighting systems in the marketplace, to make them more straightforward and acceptable. And we would make the technique practical to cover most well-liked goods such as LED bulbs, spotlights, par cans, fluorescent tubes, ceiling lights, floodlights etc. This classification is straightforward for most buyers to fully grasp easily, and it’s also complied by quite a few producers unconsciously or intentionally. During our retail sales, we discover out that most individuals would not try to dig into detailed efficiency characteristics of the LED lights, such as electrical, thermal or optical efficiency. Rather, they would prefer to know regardless of whether the item is compatible with their traditional lighting sources. In general, we would like to define LED systems into 4 categories.

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