LED stands for Light Emitting Diode. They have been around for decades, however, in recent years they have become more and more affordable. Unlike incandescent and halogen bulbs, LEDS are made up of a solid material called a semiconductor. This material is encased either in glass or translucent plastic and can be inserted into a normal screw or bayonet light fitting. When electricity is passed through the semiconductor, tiny subatomic particles called electrons begin to move which produces energy. In this case the energy is emitted in the form of visible light. The more electricity used, the brighter the illumination.
The most significant distinction between traditional lighting devices (an incandescent light bulb, floruesent tube, neon fixture, etc,) and LEDs is that contains no fragile filament or glass tube, making it an extremely durable and reliable light source that can be used in ways never possible.
While a halogen bulb has a number of advantages over an incandescent light, LEDs contain a number of benefits over halogen lamps. These include:
Colour Profile : LEDs are available in a whole range of colours for any lighting situation. Halogen lights burn much hotter than incandescent bulbs and therefore only produce a bright white light. This might be good for some situations, but when a different colour is required, LEDs are a better option.
Heat : Halogen lights not only burn brightly, but they also produce a lot of heat. They can cause a nasty burn when touched by accident and will raise the temperature of a room significantly. This can cause real problems especially in hotter climates. LEDs produce very little heat and do not add to an environment's temperature. Due to their low heat output they are also safer and have a lower chance of starting an accidental fire.
Energy Consumption : Halogen bulbs use a large amount of electricity to produce light. This can lead to substantial energy bills. LEDs on the other hand use only a fraction of the power which can lead to huge savings each month. They are also better for the environment as they reduce the carbon footprint of those who use them through lower power consumption.
LEDs are notable for being extremely long-lasting products. Many LEDs have a rated life of up to 50,000 hours. This is approximately 50 times longer than a typical incandescent, 20-25 times longer than a typical halogen, and 8-10 times longer than a typical CFL. Used 12 hours a day, a 50,000 bulb will last more than 11 years. Used 8 hours a day, it will last 17 years!
They can be used almost anywhere. LED replacements are already available for bulb types such as A-shape, PAR reflectors, MR reflectors, decorative, undercabinet, and more. When used on dimmers, particularly dimming systems that support many bulbs, we suggest testing a few LEDs first to test compatibility.
LEDs are very green. For starters, they use much less electricity than many other lighting products. This means that less electricity has to be produced to operate them, and resulting in lower emissions from power plants, especially in areas where coal-fired plants are common. Unlike CFLs, they contain no mercury. Because of their long life, they also reduce solid waste: If you replace an incandescent bulb with an LED, you will prevent fifty 1,000 hour incandescent bulbs from being thrown away. Additionally, they produce very little heat and can reduce energy usage related to HVAC. The U.S. Department of Energy has estimated that increased adoption of LEDs over the next 15 years would also reduce electricity demands from lighting by 62 percent, prevent 258 million metric tons of carbon emissions, and eliminate the need for 133 new power plants