Though Thomas Alva Edison invented the light bulb 130 years ago, the vast majority of the improvements to it were made during the past two decades. The sole reason for such improvements was the recent focus on energy saving. The fluorescent bulb was there as an energy saver from 1939 when it was developed but it was improved for widespread use only after the compact fluorescent lamp was invented in 1976. The most recent energy saver developed is the LED light that is the best energy saver invented so far. They are available as LED light bars for convenient use.

LED light bars are made by fitting a series of light emitting diodes in a casing. The higher the number of these light-emitting bulbs the better is the intensity of the light. They are available in many colors. The colors could be selected according to the requirement of the user. They are used in numerous places for different purposes. It is commonly used in the rear spoilers of cars to burn along with stoplights. Also they are used in vehicles for decorative purposes. While the stoplights are red in color the ones used for decorative purposes have many colors.

Another place where the LED bars are used is the inside of cupboards. They could be easily fixed inside cupboards to illuminate them. When fixed with a switch coupled to the cupboard door LED light bars are a handy way to illuminate inside of a cupboard. They are used in ambulances and police vehicles too. It is a common for you to see police cars, which pass by with their lights blinking in red blue and white colors. These are all made using these innovative lighting systems.

LED light bars are cheaper to use due to the fact that they use up only very little energy. If used in a car the burden it creates on the battery is very little. In case you use it in the household your electricity bill is bound to come down drastically. Though the initial cost of these is higher than incandescent bulbs the lifetime of them is more than ten times that of an incandescent bulb. Also the power consumption of light emitting diode is very low.

The LED light bars are still predominantly used for special uses such as alarm signals and direction signals and not for normal illumination. According to some sources the LED is going to be used for illumination purposes in the near future. Then they will be able to replace the millions of incandescent bulbs the world over. Then the savings this solid-state light source is going to make will be enormous. As more research is being done on manufacturing cheaper LED lights the prices also will come down drastically. The day the LED light bars illuminating households, streets and arenas is not far away. These solid-state lighting systems will be the technology for the future and they are going to save a lot of energy for the mankind.

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