Device for securing a safety area around at least one automatically operating machine

A device for securing a safety area around at least one automatically operating machine, comprising:

• a visible or invisible illuminating marking, which is arranged on or in at least one surface delimiting the safety area and by means of which at least one of at least part of the safety area or at least part of a boundary of the safety area is marked,
• a sensor-based monitoring device configured to detect a breach of the safety area,
• a control device configured to control the machine and to change the safety area in correspondence with a movement of the machine and to control a location of the illuminating marking in correspondence with the changed safety area, and, depending on a detection of a breach of the safety area by the monitoring device, also configured to at least one of change an operating state of the machine and change an operating mode of at least one light source and to trigger an alarm,
• wherein a multiplicity of light sources which can be actuated in a spatially resolved manner is arranged on or in the surface delimiting the safety area, wherein each of the light sources comprises an inactive and at least one active operating mode, wherein the operating mode of the light sources can be controlled by way of the control device, and wherein the illuminating marking is formed as multiple of the light sources in an active operating mode,
• wherein upon a change of the safety area, at least one light source which is no longer required for the illuminating marking of the changed safety area is switched from an active operating mode to an inactive operating mode by the control device and at least one other light source which was previously in an inactive operating mode is switched into an active operating mode by the control device, thereby controlling the location of the illuminating marking in correspondence with the changed safety area, and wherein upon a change of the safety area, the monitoring device is further configured to detect a breach of the changed safety area.