Safety helmet

The utility model provides a safety helmet, include: the cap is personally experienced sth. Part of the body and is fixed the gaseous detection device on the cap body, the cap body is formed with thechamber that holds that open side down, holds the head that the chamber is used for holding the staff, gaseous detection device is including detecting head, attention device and power, and the detection head sets up and deviates from the surface that holds the chamber at the cap body for detect harmful gas, the attention device is connected with detection head electricity for when harmful gas's concentration exceedes the default, produce standby signal, with the suggestion staff, the power is with detect the head and the attention device is electric is connected for for detecting the power supply of head and attention device. The safety helmet that this embodiment provided, when the concentration that detects the first hazardous gas who detects exceeded the default, police dispatch newspaper suggestion staff can b