LED lamp market has yet to break through the technical bottleneck of heat

LED brake light current global market share is relatively high, while the LED headlights are still difficult to compete with HID, is expected to 2011 global market share of only about 3%. LED taillights will be the fastest growing car lights in the next few years, by 2011 its market share will rise from 15% in 2008 to 28%, while Asia will be the fastest growing region.

The decorative lamp is mainly used for beautifying the locomotive and the locomotive in the interior and exterior of the vehicle. The function LED lamp is suitable for the digital meter assembly indicator lamp backlight display, front and rear turn light, brake indicator lamp, outline lamp, reversing lamp, fog lamp, reading lamp. The use of LED basic requirements and general use of the LED is similar, but the angle of the LED, color, brightness, voltage value, depreciation, discrete heat, ultraviolet proof and high reliability requirements. In fact, LED lighting technology has not only played a so-called "vase" decorative role, LED will rely on its own characteristics of energy saving and longevity will become increasingly prominent, the future direction of the development of automotive lighting.

As for the main lighting LED, manufacturers generally believe that the main lighting LED still need a period of time will really be a lot of commercial brewing, which is one of the key points of the price. In addition, the current LED cooling, power supply life and the lamp can be matched, intelligent control and price for the LED lighting system needs to overcome the issue.

LED is the main bottleneck in the development of the thermal management, the biggest challenge is the problem of self heating LED, LED most of the electricity are converted into heat instead of radiant heat, and can not be good for interior lighting, more important is the heat causes the LED semiconductor temperature is too high, it is easy to damage; at the same time LED lamp lumens is not the same times with the current growth, namely electricity will not be much brighter and more obvious; LED light irradiation has obvious directivity, breadth enough ambient temperature; the LED lamp of the same great, so the heat management of it is the most fundamental problem to be solved, which relates to the current the components, especially the control and management of the thermistor, the linear current control is the key of LED can be normal and safety work. LED will change the color with the temperature and current changes, which may affect the night vision and distance judgments; current frequency may even lead to frequent flashes of light. At the same time, most of the countries and automotive lighting related laws on LED lights and not much support, but also limits its development.

This new LED light source can make the style of the design and configuration of vehicle lamp with unprecedented flexibility and is suitable for the model of personalized, light output power density and LED has been able to match the HID lamp, so it is very promising to other existing lighting technology all eliminated and dominate the light market.

LED headlamps, although just started, but it will be the rapid development of the automotive LED market areas. It is estimated that by 2012, LED headlamp market will reach $80 million. LED will become the new darling of the automobile lighting system with its excellent safety, reliability, energy saving and the characteristics of aesthetic design.