Provided is a beacon illumination device for signaling the presence of a wind turbine to aircraft, including an illuminator device having at least one light-emitting diode, at least one beacon light that can be mounted on an end part of the wind turbine at a distance from the illuminator device, at least one light conductor having optical fibers for transmitting light from the illuminator device to the beacon light, with the optical fibers being grouped in at least one bundle of optical fibers, with the illuminator device also having an optical collimator with at least one collimator lens disposed between the light inlet of the optical fibers and the light-emitting diode, for converting scattered light emitted by the light-emitting diode into a parallel beam of light and transmitting same towards the light inlet of the optical fibers.