Rear position lamp of auto and control circuit for controlling multiple light sources on/off synchronously

Abstract

The invention relates to a rear position lamp of an auto and a control circuit for controlling multiple light sources on/off synchronously. The control circuit is welded on a metal plate used for mounting light sources and comprises a PNP type triode, an NPN type triode and a plurality of diodes, the diodes are as many as the light sources; the positive electrode of each diode is connected to the base of the PNP triode; the negative electrodes of all diodes correspond to the light sources one to one; the emitter of the PNP type triode is connected to a power supply end; the collector of the PNP type triode is connected to the base of the PNP type triode; the emitter of the NPN type triode is grounded; the collector of the NPN type triode is connected to the power supply end. The control circuit is capable of controlling multiple light sources on/off synchronously through the size of potentials of the triodes, which not only facilitates the light distribution design, but also expand the modeling space. The invention can solve the problem that since the light distribution demand is hardly met when signal lamp bulb works, visual cognition angle patterns need to be added and therefore appearance defects can be caused.

Description

technical field [0001] The invention relates to the technical field of automobile lamps, in particular to multi-light source light distribution of a rear position lamp, in particular to a rear position lamp of an automobile and a multi-light source simultaneous on and off control circuit thereof. Background technique [0002] The existing single-lamp multi-light source realizes the light distribution method of the rear position lamp. When the position lamp A and the position lamp B are arranged in the rear position lamp, when the position lamp A works alone, the position lamp B works alone and the position lamp A+ When B is working at the same time, it needs to meet the light distribution requirements. That is to say, when any one bulb is not working, the other working bulb needs to meet the light distribution requirements. Of course, when two bulbs work at the same time, they also need to meet the light distribution requirements. [0003] The following are three situations ...

AI Technical Summary

Problems solved by technology

Solve the problem that the current car rear position lights are difficult to meet the light distribution requirements when a single light source is working, and it is necessary to increase the viewing angle pattern, resulting in appearance defects

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