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A Brief Introduction of LED Downlight Bulbs From:www.lgiled.com   Reporter:pamela   Date:2013/11/18 20:26:24   Tags:led-wholesalers

Led panel lightAs is known to all, Thomas Edison(February 11, 1847–October 18, 1931) first invented the incandescent light on October 22, 1879 after numerous experiments. Since then, light was brought to our homes and lit up our life. However, the bulb is very inefficient because it looses much of its energy as heat when being used, so scientists gradually conduct many experiments to create a new bulb which is more efficient to take the place of it. Thus, the led downlight bulbs were invented. So what is led downlight bulb?

The led downlights are what's called Light emitting diodes and are very commonly used in the electronic world and you can see it everywhere from the bright light at night outside the shop to the information we can see on an electric watch we daily use. Why it is more efficient than incandescent light? It is because it doesn't have a filament like the incandescent bulb Edison invented at first. On the contrary, it emits light from a semiconductor instead of burning out a filament. But there are some advantages of the led downlight bulbs. As is known to all, the incandescent light gives off warm light and the orange light will make you feel happy. The led light, however, gives off strange light which may cause people feel unpleasant and give people headaches.

Though there's some disadvantages of led donwnlight bulb, there's also advantages of them. First of all, it is very energy efficiency, that is, it reduced energy because it does not give out heat when working, there's no waste of energy as form of heat. Second, apart from the energy efficiency, it is also time efficiency. The life span of an incandescent bulb is not that long, the led downlight bulb is very long and can be as long as 20 years without the worry to change the bulb. The time efficiency also makes it cost efficiency because of the long time it can be used.

The merits of the led downlight bulb is  very obvious. So scientists have engaged in the improvement of it with all heart. But they must pay attention to two aspects. First, they must pay attention to tackle the issue of light-loss. Second, they must find new cheap ways to create the gallium-nitride semiconductor material.

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