Subway billboard type safety door opening system

摘要

When the emergency door is opened, the subway billboard-attached safety door opening system of the present invention is easily opened while the emergency door and the billboard are rotated from the outside to the inside with respect to each hinge. When the ad board is in close contact with the emergency door, the billboard is easily locked and integrated with the emergency door, and when the emergency door is opened, the coupling is released and the emergency door and the billboard rotate safely and horizontally without interfering with each other's motions without exerting great effort. It becomes open. In addition, the present invention simplifies the structure by adopting a billboard having a special structure capable of using a fabric advertising surface for the billboard installed in front of the emergency door to facilitate the installation and replacement of the fabric advertising surface, even when used for a long time Like advertising film, it prevents wrinkles caused by thermal deformation and increases the service life, and the weight is dramatically reduced, so that the emergency door can be easily opened without much difficulty. Most important of all, even if a single-piece fabric advertisement surface is installed on a billboard installed in three pieces, the fabric advertisement surface is also naturally folded or unfolded at the same time when both sides of the billboard are interlocked with the emergency door and folded or unfolded from the outside to the inside. It can be used without any damage to the advertisement surface. In addition, the present invention is provided with a means for preventing the separation of the billboard, so when the emergency door is opened and closed, the billboard is not separated from the emergency door. There is no risk of damage to the advertisement surface. As a result, the present invention is not only convenient for installation and use, but also has a feature that exhibits a variety of functions, such as no malfunction in long-term use, and the emergency door and billboard can be opened under any conditions to be used safely for a long time. It is.