A wearable electronic device is disclosed, including: a housing including a first surface facing a same direction as a gaze of a user, a second surface facing in a second direction towards a face of the user, and a side surface surrounding a space defined between the two surfaces, a first and second light output device disposed in the housing and configured to output an image, a printed circuit board at least partially disposed between the first and second light output device, and including at least one electronic component, a supportive frame, a battery disposed between the frame and the second surface, and a first heat radiating member disposed between the frame and the battery.