2013年4月10日星期三

Green advantages of LED lighting and its application in automobile


The so-called green LED highbay light. Refers to conserve energy, protect the environment and help to improve the people to produce work, learning, efficiency, and quality of life, and promote the health of the body b lighting.

Energy saving: electricity for lighting in China accounted for the total amount of the national power generation 13%, now stands at more than 3,000 kwh per year, 10 energy-saving, annual savings of more than 300 billion kilowatt-hours.

Environmental protection: Electric power plants issued before reaching the user through the long-distance transmission. It must be consumed to get coal, oil, natural gas, hydro. In the power generation process, you will generate a lot of pollutants such as sulfur dioxide, nitrogen oxides and dust. Cause serious acid rain and dust pollution. Save electricity for lighting, green lighting project, and corresponding reduction in pollutant emissions in the power generation process. New efficient light sources, but also to avoid mercury lamp components, to prevent broken glass releases to the environment, but also can achieve the purpose of protecting the environment.

Improve lighting quality: human long-term natural light to live under. Eye good adaptability to the natural light, natural light conditions of the visual sensitivity of human eye is higher than artificial light, 5% -20% or more. The Green Lighting extremely close to natural light. Conducive to building a comfortable, safe light environment to improve the quality of people's work and life.

LED works

led is LightEmittingDiode abbreviation for Chinese translated as "light-emitting diode. The name suggests, this is a semiconductor device capable of emitting light Mou. LEDs are semiconductor optoelectronic devices, in addition to having a light-emitting characteristic, it is fully equipped to the characteristics of the semiconductor rectifier diode. Moreover, in the case of external positive bias can emit light having a certain wavelength. This light emission characteristics occurs in the positive biased portion of the diode characteristic curve.

led the structure mainly consists of the PN junction chip, an electrode, and an optical system. Plus the forward bias on the electrode, the electrons and holes are injected into the P and N regions, when the non-equilibrium minority carrier and majority carrier recombination. Will the excess energy in the form of photons into light energy.

PN junction barrier constituted according to the terminal voltage to set the majority of the P and N regions of the carrier to the other, when the forward bias voltage of the times barrier decreased diffusion. Since the electron mobility is much larger than the hole mobility, a large number of electron diffusion to the P region. Constitute the P region minority carrier injection. These electronic valence band hole recombination. The composite obtained when the energy release in the form of light energy. This is the PN junction light-emitting principle. Since the P region of a large energy gap. The optical radiation can not be sent to the conduction band and therefore does not occur absorption of light, which can be directly transmitted to the led outside, to reduce the loss of light energy.

led advantages in automotive applications

1. Promote safety the First led lights start more quickly than the light source of the White Slave. The driver to see the vehicle in front brakes, have more reaction time. Secondly, the LED highbay light work in a relatively safe low voltage.

Service life more than the life of your car LED lights without replacing drivers Mi do not worry about the failure of the brake lights.

Save space because the LED highbay lamps can be made thinner, can reduce the volume of the lamps.

4. Pollution-free and low-power led lights do not contain mercury, and very low power consumption.

5 Daylight white LED highbay light color closer to daylight. This facilitates the driver's safe driving.

6. Improve visibility led lamp as the light source can make the car shine on the front of the car 30 meters away.

Light control led lights can be controlled through a focusing lens, it fired the desired direction. Such as the road ahead. Avoid oncoming drivers feel dazzling.

More info you can visit: www.lead-lighting.com

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