Miner's lamp with spare light source

The utility model relates to a miner's lamp with a spare light source. The utility model comprises a lamp cap and an accumulator battery, wherein the lamp cap and the accumulator battery are connected through a cable; double-lamp filament illuminating bodies are arranged inside the lamp cap, and a main lamp filament and an auxiliary lamp filament are both connected with a power supply through a change-over switch. The inside of the special lamp cap needs no any insert to achieve reliable connection; the change-over switch is utilized to conveniently achieve the conversion between the two illuminating bodies, the two illuminating bodies can ensure continuous illumination when one illuminating body does not illuminate so as to ensure working continuity and safety. The utility model has the advantages of small size of charging batteries, light weight and no pollution, and the utility model can no scald human bodies and lightens labour intensity. Besides, a dual-purpose wearing device arranged on a housing can make a user select at will different wearing methods according to needs.