Research on the development trend of LED front light

The use of LED headlamps in automobiles has always been a problem to be broken through [3]. It is also because this type of LED headlamp should pay more attention to the application of far and low beam function recognition technology in the research and development process, and provide several different types and different sizes of modules as much as possible. Considering the actual needs of the lighting distance and anti-glare function of LED headlamps used in automobiles, lenses and reflectors that meet the lighting requirements should be installed in each LED module. The utility model conveniently meets people's lighting requirements at different distances. At the same time, it also enhances the intensity of lighting, but this increases the production cost of LED headlamps to some extent, and is also an important factor causing its high production cost.

After comprehensively considering the lighting distance and lighting brightness of the automobile headlamp light source, it is necessary to solve and deal with the heat dissipation problem in the lighting process of the LED headlamp. Since the brightness of the LED headlamp will dim with the gradual increase in temperature during lighting, the application life will also be shortened. Therefore, the thermal management problem is also a major problem that needs to be solved when the LED headlamp is illuminated in the high beam and the near light.

Considering these, it is not difficult to find that the heat dissipation of LED headlights is still a very difficult problem. With the continuous development of LED headlamps, high efficiency, perfect function and good performance driver equipment can now be used to deal with the heat dissipation problems and the disadvantages it brings.

Compared with ordinary halogen lamps, LED is very different in light source. LED lamps are cold light sources. Due to the characteristics of LED lamps, the change of lamp materials is specially triggered, resulting in the development of lamp materials in a new direction. A variety of heat-resistant materials are widely used in headlamps, among which PAR,PBT, and HTPC are representative. They all have good characteristics and will increase production costs. Therefore, ABS and PC materials can be used instead. Resin materials can be widely used to replace metal materials. This helps to control the lowest production cost, so as to avoid the use of metal materials, the use of some non-environmentally friendly means and technology, increase the anti-corrosion workload. Some designers also try to think of LED light sources as a common kind of electronic component, as if to look at the chip in a notebook computer.