Safety helmet

The utility model provides a safety helmet. The helmet comprises a helmet body, an indicating lamp, a power supply and a wireless receiver, the helmet further comprises an indicator lamp base, a maincontrol chip and a wireless transmitter, the indicator lamp, the power supply, the wireless receiver and the main control chip are all arranged on the indicator lamp base, the indicator lamp base is covered with an indicator lamp cover, and the indicator lamp base is externally hung on the helmet body or embedded in a mounting groove formed in the rear portion of the helmet body; wherein the wireless transmitter is arranged in an in-vitro mode, the wireless transmitter is arranged in a brake sensor, the brake sensor is detachably arranged between a handlebar and a brake handle of a two-wheeledvehicle or a tricycle, the bicycle further comprises a steering switch in communication connection with the brake sensor, and the steering switch is detachably arranged on the handlebar. The safety helmet disclosed by the uti