WHAT is LED LIGHT ?
A LED, or light emitting diode, is a semiconductor light source that produces light in a much more efficient manner then conventional lighting technologies such as the incandescent and fluorescent lighting.
Technically, a semiconducting chip is doped (intermixing impurities into a semiconductor of high purity levels to modulate electrical properties) to create what is called a p-n junction. The ‘p’ represents the anode from which electrons flow into the ‘n’ or cathode. “Charge carriers” taking on the form of ‘holes and electrons’ flow into the p-n junction where upon electrons to fall into holes of a lower energy level, causing energy to be liberated in the form of photons. This process, known as electroluminescence, leads to light being generated.
Why should I use LEDs ?
There are many reasons why businesses and homeowners are switching to LED:
High efficiency: Roughly 80% of the energy used in an incandescent bulb is wasted via heat. 80-90% of energy used in LED lights is used in the generation of light. The term used to describe LEDs minimal heat generation is ‘cold lighting’.
Less Maintenance: LED lights have a significantly higher lifetime. This can range from around 20,000-100,000 hours per luminaire. The costs associated of replacing conventional lamps over 20 times during the lifetime of an LED are quite staggering, especially if maintenance costs are high to start with.
Environmentally Friendly: LEDs do not contain any harmful chemicals or heavy metals. Compact Fluorescent lights contain mercury which is highly toxic. Both incandescent and CFL lights emit a small amount of UV radiation whereas LEDs emit none.
Lesser CO2 Emissions: A large percentage of energy comes from the burning of fossil fuels. This in turn releases greenhouse gases into the atmosphere. Less energy needed to facilitate the use of lights means a decrease in the amount of fossil fuels being burnt. Using LED lights will contribute greatly in reducing your carbon footprint.
I already have holes in my ceiling for my existing lights. Do I need to cut new ones?
Depending on what type of lamp you require. Retrofit plug-and-play lamps should fit into your existing lamp fixtures and connectors.If you require brighter LED lamps,which in turn require larger heat sinks, you may have to cut larger holes.Hole diameter should be displayed on the product specification.
WHAT MAKES LED LIGHTS BETTER THAN OTHER CONVENTIONAL LIGHTS?
LEDs innovative design provide many advantages over that of traditional light bulbs including a longer shelf life,lower energy consumption,size and an overall improved robustness.Not only are they much more environmentally friendly compared to that of CFL and fluorescent lighting,which contain mercury and other harmful toxins,but also are available in a diverse range of styles,shapes & sizes.
HOW LONG DO LED LIGHTS LAST?
The usual length of time that LED lights last is generally up to 50,000 hours. This length of time can vary somewhat depending upon the quality and type of driver used and the number of power surges and electrical fluctuations that the lights are exposed too. Our LEDs arerated to last for more than10 years, powered by high quality drivers,this typeof lighting truly is a smart investment!
WHY ARE LEDS MORE EXPENSIVE THAN CONVENTIONAL LIGHT BULBS?
Considering that LEDs are made using durable, high quality materials that are designed to be shock and heat resistant,joined with the additional manufacturing costs required to produce them, LED lights are often more expensive than their inefficient conventional counterparts. This added cost is readily recouped though through an energy saving of upto 90% on household lighting costs and a much longer shelf life.
IS IT TRUE THAT LED LIGHTS ARE MORE ENERGY EFFICIENT THAN OTHER LIGHTS?
Yes. Light emitting diodes are designed in such a way that enables small amounts of electricity to efficiently generate a large amount of light.LEDs innovative design converts approximately 90% of the electricity used into light, whereas traditional incandescent and florescent lighting technologies utilize a mere 10 –15% of the electricity, with the rest being lost as heat. This leads to LEDs being much more efficient and heating up to a much lesser extent.
I’VE HEARD THAT SOME ENERGY EFFICIENT LIGHTS SUCH AS CFL’S CAN BE DANGEROUS. IS THIS TRUE?
Prior to LED lights coming onto the marketplace the mainstay energy efficient lighting source came in the form of a CFL, or Compact Fluorescent Light. Despite being efficient, they are in effect quite similar to neon fluorescent tubes predominantly used in kitchens and office spaces. Such lighting gives off a blue-white luminescence and uses much less energy than other conventional lighting sources such as incandescent and halogen lights.Despite this,CFL and fluorescent light sources contain mercury and a variety of other harmful material that are detrimental to ones’ health. Being made from glass these lights can and often do break making them a significant health and safety issue for households and businesses alike.
LEDs on the other hand do not contain such toxic materials, come in a wide variety of stylish designs,are durable and do not flicker like CFL and Fluorescent lights.
DO LEDS BURN OUT THE SAME WAY TRADITIONAL LIGHT BULBS DO?
LEDs work differently than traditional lights and they do not use a filament.Traditional lighting sources have a filament that heats up, and upon doing so it produces light. Incandescent bulbs continually repeat the heating cycle, which causes the filament to fail. Since LEDs do not have filament within them, but rather a semi-conductor diode,they can last for more than 50,000 hours.Instead of burning out, after many years, these lights will simply begin to fade.
|Equivalent wattages and light output of Incandescent, CFL and LED bulbs|
|Comparing the features of Incandescent, CFL and LED bulbs|