Emergency escape apparatus for a building

An emergency escape apparatus comprising:

• a support frame configured to be installed on a door or a wall, the support frame defining an exit opening;
• an escape door located inside the exit opening and configured to open and close the exit opening, the escape door defining an accommodation space;
• a driving unit located in the accommodation space of the escape door and configured to rotate relative to the escape door, the driving unit comprising:
• a rotating piece rotatably coupled to the escape door and configured to rotate about an axis perpendicular to a front surface of the escape door, and
• a cam that protrudes outward from an outer circumference of the rotating piece with respect to the axis;
• and
• an unlocking device that is located in the accommodation space of the escape door, that is configured to be pushed by the cam, and that is configured to release coupling between the escape door and the support frame based on rotation of the driving unit,
• wherein the driving unit is configured to be controlled by a control unit based on a sensor detecting an event.