Advantages and disadvantages of LED car lights
1. Energy-saving: Light-emitting diodes directly convert electric energy into light energy, which consumes only110 less than ordinary automobile bulbs, thus saving fuel consumption and protecting automobile circuits from being burnt out by excessive load current.
Second, environmental protection: there are no ultraviolet rays and infrared rays in the spectrum, neither heating nor radiation, and the glare is small. Moreover, the waste can be recycled, pollution-free and mercury-free, and can be safely contacted. It belongs to a typical green lighting led light source.
3. Long service life: the lamp body has no loose parts, and there are no shortcomings such as easy burning, thermal deposition and light decay of the filament. Under proper current and voltage, the service life can reach 8-65438+ 10,000 hours, which is more than 10 times longer than the traditional light source.
Fourth, high brightness and high temperature resistance. The low temperature of light-emitting elements does not require the high temperature resistance of surrounding materials, and ordinary headlights can easily exceed 200 degrees in 10 minutes.
Fifth, the volume is small. Designers can change the lamp mode at will, which makes the car shape diversified. Automobile manufacturers favor LED, which is completely determined by the advantages of LED itself. The high plasticity of shape leaves a lot of room for design.
Sixth, the stability is good, and the led has strong seismic performance: it is encapsulated by resin, which is not easy to be broken and easy to store and transport.
Seven, the luminous purity is high, the color is clear and bright, there is no need for lampshade filtering, and the light wave error is within 10 nm.
Eight, the reaction speed is fast, and it can emit light in microseconds without hot start time, while the traditional glass bulb has a delay of 0.3 seconds, which can prevent rear-end collision and ensure driving safety.
Nine, energy saving/low power consumption, can save fuel.
X. The color temperature is closer to the sunlight, and the vision is better.
Disadvantages of LED lights:
First, LED lamps are more expensive than ordinary lamps.
Second, car headlights is difficult to popularize and its heat dissipation is not good. Poor heat dissipation is easy to fade, which affects the service life of headlights. The biggest problem of high-power LED lamps is heat dissipation. Cheap ones are not heat-resistant and heat-resistant ones are not cheap. Although the lighting life of LED lamps is very long, there is another factor that affects the life of LED lamps, that is, voltage instability. Therefore, the requirements for electronic control components of LED lamps are higher, which increases the cost.
Third, there is no industry standard, the product quality is uneven, and the production price difference of different LEDs of the same product is 1-2 times.
Fourthly, the light emitting types of LED lamps are different from halogen lamps, so it is not realistic to directly replace halogen bulbs, because most reflective bowls of cars are designed according to halogen bulbs. If you load the car, you have to reinstall the lamp bowl or lens, which adds a lot of cost.
LED lamp principle:
LED is a kind of semiconductor that can convert electric energy into visible light. It changes the principle of tricolor powder of incandescent tungsten filament and energy-saving lamp, and adopts electric field to emit light. According to the analysis, the characteristics of LED are very obvious, such as long life, high light efficiency, no radiation and low power consumption. The spectrum of LED is almost completely concentrated in visible light band, and the luminous efficiency can reach 80 ~ 90%.