Display device for displaying an activation status of an emergency slide in an aircraft, having - an optical signal device for emitting an optical signal and/or an acoustic signal device for emitting an acoustic signal, - a status signal input for receiving a predetermined status signal which indicates the activation state of an emergency slide, wherein the status signal has a first signal state assigned to an activated state of the emergency slide and a second signal state assigned to a deactivated state of the emergency slide, and - a control device which is connected to the optical signal device and/or to the acoustic signal device and to the status signal input and is set up to operate the optical signal device and/or the acoustic signal device on the basis of the status signal received via the status signal input in order to display the signal state of the status signal, characterized in that - the display device is in the form of a cohesive compact structural unit which can be arranged on a door (24, 26) of an aircraft door, - the display device also has an inclination angle measuring device, which is connected to the control device and is intended to determine the inclination angle of the display device about a predetermined axis, and an inclination angle signal output, and - the control device is also set up to determine, on the basis of the inclination angle determined by the inclination angle measuring device, whether a predetermined inclination angle about the predetermined axis has been exceeded for a predetermined period and to emit a predetermined output signal via the inclination angle signal output only when the predetermined inclination angle has been exceeded for the predetermined period. - an optical signal device for emitting an optical signal and/or an acoustic signal device for emitting an acoustic signal, - a status signal input for receiving a predetermined status signal which indicates the activation state of an emergency slide, wherein the status signal has a first signal state assigned to an activated state of the emergency slide and a second signal state assigned to a deactivated state of the emergency slide, and - a control device which is connected to the optical signal device and/or to the acoustic signal device and to the status signal input and is set up to operate the optical signal device and/or the acoustic signal device on the basis of the status signal received via the status signal input in order to display the signal state of the status signal, - the display device is in the form of a cohesive compact structural unit which can be arranged on a door (24, 26) of an aircraft door, - the display device also has an inclination angle measuring device, which is connected to the control device and is intended to determine the inclination angle of the display device about a predetermined axis, and an inclination angle signal output, and - the control device is also set up to determine, on the basis of the inclination angle determined by the inclination angle measuring device, whether a predetermined inclination angle about the predetermined axis has been exceeded for a predetermined period and to emit a predetermined output signal via the inclination angle signal output only when the predetermined inclination angle has been exceeded for the predetermined period.