Man-machine interaction device used for down-hole gas detection in coal mine

The utility model relates to a man-machine interaction device used for down-hole gas detection in a coal mine. The device comprises a casing, a key is arranged on the front panel of the casing in the position close to the top end, an LED display screen is arranged on the right side of the key, and a man-machine interaction controller is arranged inside the casing and is connected with the key and the LED display screen through circuits. The utility model has the benefits that all the control circuits adopt explosion-proof design with explosion protection effect and safety, and the intrinsic safety can prevent explosion and other dangers; the LED display screen and the key are made of high-grade materials, encapsulated well and installed according to standards; the LED display screen can display accurately and clearly in time and facilitate the identification and understanding; the key is easy to operate and durable and conforms to the user's habit and behavior; and the man-machine interaction device also has