LED Bulbs
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LED BULBS
As countries are banning inefficient incandescent lighting and promoting greener, more efficient lighting solutions, they are making a mistake promoting fluorescent lights due to their toxic mercury content. Only LED lights are environmentally sound. They use far less electricity, have far fewer throwaway materials and last virtually a lifetime in most applications.  Am presently using them all over my own house  - ok...apart from my dining room table pendants and bathroom mirror lights - fluorescent light bulbs are used and have been changed several time!  Am planning to replace with LED's.   Have not changed an LED bulb in 3 years so far.

Light source of the future
LEDs are the light source of the future, and more and more people are using them for lighting – both indoors and outdoors.  Initially people were reluctant to use them and pay the prices for them, but that has changed, mostly due to more availability, more information and better pricing and of course, the cost saving dimension.


LEDs are 5 times as energy efficient as conventional incandescent bulbs, and colour rendering is on a par with fluorescent tubes.
The use of LEDs for lighting has been limited up to now, mostly because LEDs have not been sufficiently energy efficient and colour rendering has not been good enough. However, there have been significant improvements in recent years.


High energy efficiency
Commercially available LEDs are 5 times as efficient as incandescent bulbs, 3 times as efficient as halogen bulbs, and equal to energy saving bulbs.


Switch on instantly
LEDs switch on instantly and provide their full strength immediately. In the long term, the small components in LEDs are suitable for dimming the lights, and the light doesn’t change colour when dimmed, which is what happens with incandescent and halogen lights. Nevertheless, LED bulbs sold on the market today are not capable of being dimmed, because they do not yet contain the necessary electronics.


Colour properties
The colour properties of a light source are relevant to white light, and are described as colour temperature (expressed in Kelvins, abbreviated as K) and the colour rendering index (CRI) or Ra index. The CRI ranges between 0 and 100 and indicates how good a light source is at reproducing a number of reference colours. A CRI of 100 is the best.



The light from LED sources is either warm (typically 2,700-3,000 K), neutral (3,500-4,500 K) or cold (4,500-10,000 K). A comprehensive selection of LEDs is available with a CRI of over 80. The best LEDs have a CRI of over 90.


Long lasting
As a rule, LEDs have a lifetime of between 25,000 and 50,000 hours. The lifetime depends to a large extent on how they are used. High temperatures and high current loads can quickly take their toll on an LED, which in many ways resembles an ordinary electronic component.


Unidirectional light
LEDs project all their light forwards, whereas the most common light sources emit light in all directions. This is why LED bulbs are best suited to lamps that project light in one direction, such as spot lights and lamps that solely light downwards.


LED Bulbs 

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