In recent times the use of lights with LED technology is becoming widely available because of growing concerns about the savings and energy efficiency lighting facilities.
This type of lights are already used in a wide range of applications such as:
- Panels informative.
- Signals.
- low-energy lighting.
Its operation is based on the use of a special type called LED semiconductor diode (the acronym of Light Emitting Diode).
This type of light-emitting diodes spectrum reduced to be polarized by a circular supply voltage and an electric current through them. This effect is known by the name of photoluminescence.
The main advantages of LED-type lights are:
- High luminous efficiency, ie the number of lumens provided for every W of electricity consumed. So luminous efficiency is about 80 lumens / W compared to 55 lumens / W in the so-called energy saving light bulbs and 10 lumens / W for conventional bulbs.
- Low temperature: the low consumption of LED heat production thereof is low.
- Quick Reply , the order of microseconds. This response time is much faster than halogen and fluorescent.
- High d URATION and reliability , much longer than any other lighting system (about 50,000 hours).
- Low environmental impact, do not contain hazardous gases and metals to the environment.
- Light emitted no flickering.
The disadvantages include:
- High cost of Acquisitions.
- Low quality of the light, coldness.
- No allow to control the intensity of light generated by dimmers.
Because of these characteristics in the present, these lamps are ideal for applications where high reliability is required because of the number of hours of operation required and it is not important to the quality of the light.
Some of these applications for which they may be interesting type LED lighting are
- Lighting of parking of vehicles.
- permanent lighting corridors and circulation areas edifcio in crowded public.
- Outdoor Lighting.
- lighting paths and steps through beacons .
hoped that in future this type of lights are an alternative to low-energy lighting, a time will overcome the disadvantages cited previously.
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