Key features of LED car lights
Another key feature is the LED light mode. Unlike incandescent lamps, LEDs emit only through a surface, which is good for headlights and chart lights applications, but may not be suitable for other lighting applications for car lights.
Take the brake light and the direction indicator tube as an example, assuming that the vehicle speed is 125 km / h, or 35 m / s, the incandescent hot start time is about 250 milliseconds, and the rapid response of the LED can be issued about 8 meters Brake warning, so as to effectively avoid the car collision. The same is true for the indicator light.
Compared with the standard incandescent lamp, LED consumption per unit of electricity can produce more light output. But compared with the halogen lamp, the LED's actual light output advantage is not obvious. The latest LEDs have excellent lumens per watt value, but some values are obtained under optimized conditions, and are usually not obtained under the highest output conditions. In general, when the LED current increases, the light output did not increase linearly. Thus, even if the LED outputs x lumens at 0.5A, it does not output 2x lumens at 1.0A.
The expected life of the LED is 50,000 hours, while the tungsten halogen lamp is 20,000 hours, the tungsten incandescent lamp is 3 thousand hours. Relative to the incandescent lamp, LED structure is strong, not susceptible to vibration, the use of light output brightness will not be significantly reduced. The lighting scheme based on multiple LEDs also has the "redundancy" benefit, and even if an LED fails, the lighting fixture can continue to be used. Proper use of the LED (especially the correct control of the LED temperature), can effectively extend the life expectancy of the LED. On the contrary, if the temperature is too high, LED is easy to damage. LED applications also involve many legal definitions in automotive lighting. Most countries have a clear definition of brake light or headlamp failure - light or off. But the use of multiple LED lights, it is difficult to accurately define whether the lights have been damaged. Manufacturers and legislators are defining the use of LEDs.
