A motor vehicle lamp from light-emitting diodes or led chip

摘要

The motor vehicle lamp, particularly a signalling lamp, comprises light sources consisting of light diodes or light diode chips (11) arranged on or within a plate (12). The different light sources (11) are connected so as to form groups comprising, each of them, a certain number of series connected sources, adapted to the applied operating direct voltage. The total light surface is obtained by a matrix type parallel connection of a plurality of said groups. Owing to a statistical distribution of the series light sources, throughout the lighting surface, the initial light field is maintained also upon a failure of the whole group of series sources. By coupling shorting elements (13) in parallel to the different diodes or diode chips (11), it is further possible to avoid that the failure of a single diode (11) puts out of order the whole group of series connected sources.