The first use of LEDs in the car took place in 1984; the Corvette equipped with a high-mounted brake light from LEDs. LEDs, better than other types of lighting, are suitable for brake lights, as they light up instantly. This result gives more time for the reaction to drivers following behind such a car and helps to avoid an accident when the car suddenly stops. The difference of 0.2 seconds between the tanning time of LEDs and incandescent bulbs may seem insignificant. Still, at a speed of 120 km / h, this gives 53 cm of additional stopping distance for cars following behind. Without exaggeration, this distance can give someone life, and its absence, on the contrary, is a big nuisance.
Thus, in stoplights, the transition from incandescent bulbs to LEDs is not just a matter of style; it is a step in improving road safety. In modern cars, LED brake lights have become standard. Some cars today have brake lights that become brighter as the pressure in the brake system rises, or the LEDs begin to flash rapidly during sudden braking and to the skid of the car. For driving safety, we can see more and more motorists go to buy aftermarket 921 led bulb to replace their factory brake light bulb.
LEDs are quickly becoming the standard technology for taillights and direction indicators. They are compact, durable, more “smart.” The only factor that keeps car manufacturers from installing LEDs in cars is that LED lighting is still more expensive than standard incandescent bulbs.
However, it should bear in mind that incandescent bulbs, over 140 years of existence, have not undergone any improvement, while the performance of LEDs doubles every 36 months, the pace of development is comparable only to the pace of development of computer technology. Along with the improvement of productivity, the production process also simplified, which every year reduces the price gap between LEDs and incandescent bulbs. There is no doubt that the future of automotive lighting comes with LEDs.
The Technical of LEDs in cars
LED lighting, which replaces conventional incandescent bulbs, is made of a bunch of several LEDs. There are two reasons for this building technology:
A single LED is not yet so bright as to replace an incandescent bulb.
The angle of emission of the LEDs is still small.
To make automotive LEDs visible from all angles, and to use them for lighting, you need to use a bunch of LED bulbs to achieve the best result and radiation in different directions. Also, a feature of LEDs is that they can emit light of various colors, which some automakers have successfully used in their models for a long time.
The Colors of LEDs in car
The color rendering system in LEDs has such a design that allows them to emit light of any color from the same LED light bulb. This action can implement in two ways:
or it is a bunch of three different LEDs combined into one unit, one of which emits red, the second is blue, and the third is green
either it is a single LED doped with three different substances, emitting red, green, or blue light when an electric current supplied to the LED.
When the voltage changes, you can choose one of the combinations of these three colors that light up in the car’s LED headlight. If you mix red, green, and blue in equal brightness, then the human eye will perceive this light as white. The eye will perceive other combinations as a palette of various colors (the same technology used in color printing, where blue, green, and red are used to create colors of everything visible spectrum). This feature of LEDs makes it possible to use the same strip of bulbs to perform several functions at once. If they light up red, they will indicate that the car is giving back. If red is especially bright or even pulsating, this will indicate braking. The amber color will make it clear that the car is making a turn. The LED lighting can be adjusted so so that all the lights in the headlight light up simultaneously, in the form of a single unit, or sequentially, to create a “running” signal about the turn, it all depends on the configuration of the circuit that regulates the LEDs. A similar LED design used for practical purposes in the Tailgate LED Light Bar and FireandIce Light Bar from Putco Lighting LED strips.
LEDs in the Headlights
LEDs also used in headlights. The 2007 Lexus LX600 Hybrid was the first passenger vehicle with LEDs in the front optics. Now there are many such cars, ranging from Ford Taurus (which we wrote about not so long ago in the article “Ford Taurus breaks stereotypes”) to the Audi R8. The brightness of the LEDs has reached a level that makes it possible to use them in car lighting fixtures, to which serious demands are put forward by associations and agencies that oversee road safety. However, LEDs have several disadvantages. Although the LEDs do not heat up during operation, they emit less light when the temperature around rises. Also, without additional manipulation, LED headlights to emit a narrow-angle of light.
LEDs in the Interior Lights
Many motorists install LEDs in the car interior lights. The convention halogen doom light has only 500 – 1000 lifespan, and the brightness of a halogen light bulb will decrease as time goes. But a 194 Led bulb in the car can use for 10,000 – 15,000 hours without any problem. The lighting is double brighter than a halogen bulb, and the most important thing is, the LEDs emit a pure white light that is the same as the led lights at home. So you will feel so comfortable when playing phones or reading after using LEDs in car interior lights.