Detecting device

Described is a device (1) for detecting at least one thermographic image comprising a thermal camera (2) sensitive to infrared radiation for acquiring the thermographic image; a protective a case (3), inside which the thermal camera (2) is inserted, having a window through which the thermal camera (2) is able to acquire the thermographic image; a screen (5), positioned outside the protective case (3) and movable between a first operating position at which it is superposed on the window to protect it from environmental disturbances and a second operating position wherein it is shifted from the window, allowing the thermal camera (2) to acquire the thermographic image; a pneumatic system (7) for supplying air inside the protective case (3) having an inlet (8) outside the protective case (3); a computerised command and control unit (10); the pneumatic system (7) comprises means (12) for adjusting and distributing the air operating inside the protective case (3) and in communication with the external inlet (8) controlled by the computerised command and control unit (10).