An electronic device having an exhaust opening configured to exhaust air outside, the electronic device includes a door part configured to close the exhaust opening when the electronic device has a predetermined temperature, wherein the door part is rotated based on the own weight of the door part and...http://www.google.se/patents/US20080174953?utm_source=gb-gplus-sharePatent US20080174953 - ELECTRONIC DEVICE AND FIRE PROTECTING MECHANISM OF THE ELECTRONIC DEVICE
