An LED, or light-emitting diode, light bulb does not possess a filament that will burn out over time. An incandescent light bulb creates light by warming up the filament that throws off light. Instead of heating up the bulb to produce light, the LED uses semiconductors that bond atoms with surrounding diodes to create power.
There is no source of heat necessary to form light. This is the same method that is used in modern flashlights and the rear lights of vehicles. For years there was little hope that an LED could perform any type of light emission outside of circuit boards and colorful decorations, but technology continues to amaze us in defeating these odds.
A company by the name of EarthLED has delivered a cold light bulb that uses only seven watts of power as compared to the incandescent bulb at 60 watts. This light bulb, called ZetaLux, also has the ability to throw light in a more branched out area instead of the LED direct light.
Evolving through time and learning as we go delivers new ideas that give us a better way of life, the Cold Bulb is here to stay. The stepping-stone to the cold light was a light bulb called the CFL or compact fluorescent light bulb.
While only using 14 watts of power, a filament is still required to create light. Further worries have made companies think twice about the energy savings. CFLs contain mercury that is a toxic form of waste and you cannot use a dimmer switch with this type of light.
What was learned from the CFL is that energy can be diminished if you look long and hard enough. Finding a way to use LED within a bulb that can react similarly to the incandescent bulb and is being transformed to offer the dimming option has proven this. The cold feature with environmentally friendly components is just an added asset.