Within the last years light emitting diodes are entering the market for automotive exterior lighting. More and more applications such as CHMSLs, brake-, tail-, and indicator-lights are realized with LEDs. For these areas new high flux packages with high stability and best thermal conductivity are necessary. This article presents new premolded SMT-devices with an integrated copper heat sink. Based on thermal and mechanical FEM - simulations new package designs to reach the wished characteristics will be discussed, such like usability of conventional IR-soldering methods, high temperature cycling stability, low thermal resistance and high optical flux. In this paper power LEDs will be compared with conventional LEDs, especially the electro-optical characteristics in different circuit designs, the investigations of thermal management, based on various package densities and PCB - materials. Additionally the assembly and application possibilities. The result of the comparison will show the advantages and disadvantages of different LED - devices for various applications and will give a guideline which LED is best qualified for possible exterior lighting designs. In the near future with increasing chip efficiency even headlights appear to be possible. Therefore we will give an prospect of possibilities to use LEDs also for such lighting purposes.


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    Title :

    Power LEDs for automotive exterior lighting


    Additional title:

    Leistungs-LEDs für die Aussenbeleuchtung von Automobilen


    Contributors:
    Bogner, G. (author) / Hiegler, M. (author) / Wicke, M. (author) / Winter, M. (author)


    Publication date :

    2002


    Size :

    5 Seiten, 7 Bilder, 1 Tabelle




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Power LEDs for automotive exterior lighting

    Bogner,G. / Hiegler,M. / Wicke,M. et al. | Automotive engineering | 2002


    Power LEDs for Automotive Exterior Lighting

    Bogner, Georg / Wicke, Markus / Winter, Matthias et al. | SAE Technical Papers | 2002


    2002-01-0380 Power LEDs for Automotive Exterior Lighting

    Bogner, G. / Hiegler, M. / Wicke, M. et al. | British Library Conference Proceedings | 2002