Close-range early warning miner cap for mine roadway rescue

The invention relates to a close-range early warning miner cap for mine roadway rescue. The miner cap comprises a miner cap body and an early warning device, the early warning device is arranged at the rear part or the side part of the miner cap body; the early warning device comprises a spring, a photoelectric switch, a reflecting plate and an alarm mechanism, the bottom of the spring is arrangedon the miner cap body, the top of the spring is a free end, the photoelectric switch is arranged at the bottom of the spring, the reflecting plate is arranged at the free end of the spring, and the photoelectric switch is connected with the alarm mechanism; the height of the spring can range from 10 cm to 25 cm, so that when the head gets close to an obstacle, the spring is bent, light emitted bythe photoelectric switch cannot irradiate the reflecting plate, a signal is sent to the alarm mechanism, the alarm mechanism gives an alarm, construction personnel can be alerted, the head is prevented from colliding with the