Early warning device for coal field

The utility model provides an early warning device for a coal field, which comprises a detection rod, the detection rod comprises a high-temperature-resistant cylinder body, a temperature sensor, a radon detector and a 360-degree camera are arranged in the cylinder body, and a heat insulation sleeve is wrapped between the 360-degree camera and the cylinder body; and the 360-degree camera, the temperature sensor and the radon detector are all connected with the data acquisition device. The detection rod is installed in a coal field fire zone shallow goaf. The temperature sensor transmits a detected temperature signal to the data acquisition device, the radon detector can detect a fire source position signal existing in the coal field fire zone shallow goaf through radon isotopes, and the 360-degree camera transmits a captured picture signal to the data acquisition device. A worker can observe the position, the picture and the temperature of a fire area through the data acquisition device, so that unnecessary t