Lighting device and method for operating a lighting device

摘要

In various embodiments, a lighting device may include a plurality of semiconductor light sources, and an apparatus configured to operate the semiconductor light sources. The apparatus has switching means, by which the semiconductor light sources can be divided in groups for operation with the apparatus.

主权项

1. A lighting device, comprising:
a plurality of semiconductor light sources; and an apparatus configured to operate the semiconductor light sources; wherein the apparatus has switching means, by which the semiconductor light sources can be divided in groups for operation with the apparatus, wherein the switching means are designed in such a way that the lighting device is switchable between two operating states depending on the value of a supply voltage, such that in the case where a threshold value of the supply voltage for the apparatus is undershot, a first group of semiconductor light sources is connected in a parallel branch with respect to at least one further group of semiconductor light sources in accordance with a first operating state, and that in the case where said threshold value or a second, higher threshold value of the supply voltage is attained or exceeded, the first and the at least one further group of semiconductor light sources are connected in series in accordance with a second operating state.