a headlamp comprising a first part comprising a light source intended to be fixed to the front of a user's head and a power supply intended to be deported from the light source and supplying the power supply necessary for the light source. The power supply unit comprises a thermistor supplying an electrical signal representative of the ambient temperature and a control circuit which uses this electronic signal to modify the mechanism for regulating the light power generated by the light source, in order to ensure a predetermined longevity. to the battery pack. The invention also allows the realization of a method for correcting the result of a current regulation of LED lamps used in a headlamp, when the latter is powered by an electric battery pack. Figure for the abstract: Fig. 8
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