LED is the abbreviation of English Light-Emitting-Diode. Chinese means LED, a semiconductor that can convert electrical energy into visible light. It changes the principle of incandescent tungsten filament illumination and energy-saving lamp three-base toner illumination, and uses electric field illumination.
In view of the needs of automobile design in recent years, the demand for aerodynamics and the demand for aesthetics, the shape of automobile LED lamps is also developing toward the alienation and integration. At present, the application of automotive LED lights can be divided into functional light distribution lamps and aesthetic decorative lights. The light distribution lamps are used for backlight display of instrument indicators, front and rear turn lights, brake lights, reversing lights, fog lights. , reading lights, etc., and decorative lights mainly provide color conversion of car lights, from the inside and outside of the car beautification.
In recent years, with the resolution of the LED brightness problem of the vehicle and the cost reduction, the application amount has increased, and Volkswagen has also used the LED safety tail light in various vehicles.
According to analysis, LED has obvious characteristics such as long life, high luminous efficiency, no radiation and low power consumption, and its spectrum is almost entirely concentrated in the visible light band, and the luminous efficiency can reach 80-90%. If we compare LED with ordinary incandescent lamp, spiral energy-saving lamp and T5 trichromatic fluorescent lamp, we can find that the ordinary incandescent lamp has a luminous efficiency of 12lm/W and the life is less than 2000 hours; the spiral energy-saving lamp has a luminous efficiency of 60lm/W. Life is less than 8,000 hours;
The T5 fluorescent lamp is 96lm/W and has a life of about 10,000 hours. The white LED with a diameter of 5mm can achieve a luminous efficiency of 20~28lm/W and a lifetime of more than 100,000 hours. Therefore, it is predicted that the future LED life limit will be gigantic.
In addition to the performance advantages,
LED lights are more efficient than traditional lamps
The seismic performance is stronger.
The response time is faster, and the traditional bulb bulb has a response delay of 0.3 seconds.
The heat of luminescence is small, and the heat resistance of the luminaire material is not very high.
The vehicle control circuit is not easily oxidized.
The beam is concentrated, easier to control, and does not require the use of a reflector to concentrate, which helps to reduce the depth of the fixture.
The luminescence purity is high, no need for lamp cover filtering, and the optical wavelength error is within 10 nm.
Low power consumption, when the equivalent brightness of traditional light bulbs is reached, the power consumption is only 6% of the traditional light bulb, saving electricity and fuel.
Long life, no filament structure, no heat, normal use for more than 6 years.
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