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Is it worthy investment on LED Light ?


 Ecosram  Time: 2013-11-12

 

LED stands for light- emitting diode. It was created by Russian Oleg Vladimirovich Losev in 1927. His research was distributed in Russian, German and British scientific journals, but no practical used was made of the discovery for several decades. In 1962, the first practical visible- spectrum LED was developed by Nick Holonyak Jr, while working at General Electric Company. He made his first report in the journal Applied Physics Letters on the December 1, 1962. Holonyak is seen as the “father of the light- emitting diode”.  In 1976, T.P Pearsall created the first high- brightness, high- efficiency LEDs for optical fiber telecommunications by inventing new semiconductor materials specifically adapted to optical fiber transmission wavelengths.

LED light bulb came to the North American household around 2006. It has a very distinct look because the light emitted from the LED is oriented in one direction, unlike traditional light sources in the past. Knowing that direction, we can efficiently manage all lights produced by the LED light bulb. An average LED bulb lives for 50,000 hours and produces 100lm/W turning over 90% of supplied energy into light: No UV, NO Mercury. Early LED bulbs had problem with a color of the light, but by now it improved greatly and LED light bulbs in a wide spectrum of light colours from 2700-10000 are available.

The following reasons cause LED replacement to be a trend

Health risk

Recent findings have proven that incandescent/ CFL have serious health and environment risks that were previously unknown. Every CFL contains 3-5 mg of mercury necessary for it to work. While it may seem a small amount, continued exposure to mercury may have an effect on health.

Wasted Energy 

Besides, Incandescent lamps produce large amounts of heat. Approximately 90% of the energy that is consumed in an incandescent lamp is wasted in the form of heat, while only 10% is converted to visible light.

Short life span

Incandescent lamps operate about 1000hours life span while CFL is also only about 5000hours. That is why Incandescent lamps should be used only in areas that can be easily serviced. It’s troublesome to change new lamps frequency and high cost to change every time where is high to reach.

LED- The Best Solution

Safe for use

LEDs are designed to be safe among people. No UV, no mercury , which means the light is less harmful on skin and clothes and it does not attract bugs. 

Low Heat Dissipation

LEDs do not have a filament that could burn out and they do not get especially hot. An incandescent converts only 5 to 10 percent of its electricity into light, while the rest goes to wasted heat. That is why you will burn yourself if you try to touch an incandescent bulb once it’s turned on. Compared to that, an LED bulb is more efficient. It converts 90 percent of its electricity into light. So 1W LED=10W incandescent bulb=2W CFL lamp.

Long Life Span

LEDs have a general life expectancy of 50,000 hours or longer. If you use your lights for 10 hours a day, you can use it at least 10 years. A high- end LED rated at 100,000+ hours would be used as a light source for approximately 70,000 hours. After 70,000 hours the LED would still be operational but at a decreased lumen output and would warrant replacement as per IES standards. If an LED fixture is illuminated an average of 8 hours per day, it will last over 20 years before needing to be replaced.

Decrease in cost

Although LEDS are initially expensive, the cost of new LED bulbs has gone down considerably in the last few years and is continuing down. Today, there are many new LED light bulbs for use in home, and the cost is becoming much cheaper.

LED lighting presents a new and a more environmentally friendly option. It’s long lasting and you can save hundreds of dollars on your electric bill. Additionally, LEDs have been environment-friendly for many years. LED Lamp price is cheaper and cheaper these years for resident home use. So don’t wait, don’t hesitate. Let’s move!

 


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