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What is LED Lighting?


It all began over100 years ago, when electroluminescent phenomenon was first discovered in 1907 by a British experimenter HJ Round, Using an electrified probe on a chunk of silicon carbide crystal. A visible shaft of light was the start of it all. However Russian scientists credibly reported the first creation of LED in 1927.

LED lighting is a form of lighting that utilizes light emitting diodes (LED's) to produce light energy. LED's are highly efficient light sources made of a semi conductor material that glows when subject to a current. Unlike traditional light sources such as filament lamps and fluorescent tubes, LED's do not utilize any form of gas and as a result it is a solid state form of lighting. This makes it a highly durable light source which is shock proof.

A unique feature of LED lighting is its ability to last several times longer than traditional light sources. LED's are able to continuously glow anywhere between 25,000 and 50,000 hours. This is an amazing 20 times longer than incandescent lights and 10 times longer than compact fluorescent lights.

LED lighting is becoming a standard form of lighting in today's world. They are quickly replacing conventional energy hungry filament and CFL lamps due to their high efficiency and long lasting nature.

Though LED lights are still fairly expensive, they are so efficient that they are able to pay for themselves in around 2 years especially with sky rocketing electricity costs.

LED lights are available in many shapes and sizes similar to conventional light globes and fittings. LED emitters are integrated into various fittings to create LED down lights, LED tube lights, LED bulbs, and LED strips and so on.

Advantages of LED Lights


LED lights have great advantages over conventional forms of lighting. This makes LEDs a great investment to help save you money and at the same time helping to save the environment. Some of the most important advantages of LED lights are listed below.

Long Life Span

The Light Emitting Diodes (LEDs) used in LED lights have an astonishing life span of more than 20,000 hours and even up to an amazing 70,000 hours depending on the quality of the chip and current thermal management. This long life span equates to more than 10 years if used every day for 8 hours a day. Imagine never having to change a light bulb again. The amount of money saved from frequent replacement of lights over time and the high efficiency can easily payback the cost of the LED light well under its lifespan.

High Efficiency

LED lights are highly efficient compared to older types of light sources such as halogens, incandescent and CFLs. LED lights can be 90% more efficient than the oldest incandescent bulbs, about 70-80% more efficient than halogens and a few times more efficient than CFLs. With the sharp rise in electricity costs over the last few years and the guaranteed increase in electricity prices over the coming years means that using LED lights can definitely help reduce your overall lighting bill. The amount of electricity used for lighting can make up more than 50% of the total energy needs of a building and by cutting that by 80%, there is a significant amount of money that can be saved.

Shock Proof

The components used inside a LED light and the LED chip itself are solid state devices. This means they do not make use of any delicate moving parts or gas filled globes. This results in a LED lighting being shock proof or drop proof. LED lights are resistant to vibrations and sudden movements and they do not contain any parts that can break easily such as glass. This makes LED lights very safe to use around small children where you do not have to worry about breakage and sharp broken glass. The shock proof nature of led lights also makes them very suitable for use in automotive applications. They have been used successfully as led tail lights in many 4wd offroad a mining vehicles and have been proven to be much more durable than the older type of vehicle bulbs.

Low Heat Dissipation

LED lights have a unique feature in the fact that they produce very little heat while converting electricity to light. The amount of heat produced can be an amazing five times less than halogens. This makes led lighting very pleasant to use around your home especially in areas such as kitchens or office rooms where a lot of time is spent. The low heat dissipation of LED lighting can decrease the overall temperature of the building resulting in less stress from the building air conditioning system providing further cost savings in terms of electricity usage and maintenance.

Reduced Fire Risk

As LEDs dissipate very low heat, they greatly reduce the risk of fires by reducing the chance of combusting surrounding materials. As lights are primarily mounted in roofs, their rear ends are exposed to loose and combustible roof insulation material. Did you know that halogen lights for example can run up to 150 degrees Celsius and numerous house fires have been caused by halogen down lights combusting roof insulation. With LED down lights on the other hand, they run at around at such low temperatures that there hardly any chance of combustion surrounding material. You can even hold a LED globe in your hand after it has been running for a while. If you do the same with a halogen, you will burn yourself.

Mercury Free

Unlike CFL / fluorescent lights, LED lights do not contain any mercury or harmful substances. This makes LED lighting a very safe choice for use around your homes or in areas subject to earthquakes, hurricanes and other natural disasters. The mercury in CFLs is highly poisonous and did you know that you have to evacuate a room for several minutes if a CFL light is broken? With LED globes on the other hand, there is absolutely no worry.

Ultra Violet and Infra-Red Radiation Free

Light Emitting Diodes have the ability to convert almost all its electricity into light and produces very little invisible UV or IR radiation. UV / IR radiation can be harmful to your skin if you are exposed to them for extended periods. One such example is the use of older fluorescent tubes in office where employees are exposed to them throughout the day. Switch to led tubes in such a case will definitely reduce long term effect of sink damage.

Plug & Play

LED lights like any other light globe are available in standard fitting types similar to conventional halogen, incandescent and fluorescent lamps. This means that you can easily replace your older lights with led lights without to many issues. For example led bulbs are available in the various screw type and bayonet type fittings similar to conventional incandescent bulbs.