LED Lighting - The Main Feature Of Future Cars
- 09 Jul, 2019
The luminous efficiency of LEDs is 80%~90%. If we use our daily energy-saving lamps for analogy, energy-saving lamps can save 4/5 more energy than incandescent lamps, and LEDs can save 1/4 more energy-saving lamps. In a car, LED components consume only 1/20 of the energy of the halogen lamp. The cost of LED components has also dropped significantly year by year, and current costs and prices are still falling by more than 20% per year.
The life of LED components used in automobiles can reach a level of 50,000 hours, and well-known automotive lighting suppliers have been able to provide LED components with a lifespan of 100,000 hours, which is equivalent to 11 years. Considering the frequency of use of the lights, in the design life of the vehicle, LED components basically do not need to be replaced. In contrast, the life of the xenon lamp is only about 3,000 hours. And LED make the shape and lines of the headlights richer, and the recognition at night is higher.
The LED lights up only needs microsecond. Used on taillights and turn signals to quickly illuminate for better warning. Taking brake lights and direction indicators as an example, assuming a vehicle speed of 125 km / h, that is, 35 m / s, the incandescent lamp's hot start time is about 250 milliseconds, and the fast-responding LED can send a brake warning about 8 meters away ahead of time, thus effectively avoiding car collision. The same is true for the indicator light.
Due to the fact that LED headlights have not yet been widely popularized, the price is still high, so it is only listed as the exclusive configuration of high-end car models. Therefore, for the lower car models, most of the traditional halogen headlights are used. The traditional halogen bulbs use the tungsten filament to generate heat and brightness. Although the cost is low, there are often some problems, such as insufficient brightness, inaccurate light type, short life, and easy heating of the lamp body.
Undoubtedly, the use of high-brightness LED lighting will become the main feature of future cars, thanks to many fundamental advantages of LED over traditional incandescent lighting solutions. In addition, the use of LED lighting can also drive changes in automotive design techniques and design styles. However, just like any innovative technology, LED still have to overcome many difficulties before they are widely used in automotive lighting.