| 摘要 |
PURPOSE: An open type security device is provided to perform a role of an exit or a passage of goods and easily ventilate a room by opening a window through forced entry from the outside. CONSTITUTION: An open type security device comprises a door frame(10), a center window(20), first and second windows(30,40), and a security sash(50). The door frame comprises an outer guide rail(11) and an inner guide rail(12). The security sash includes one or more crossbars(53) inside, and one end is connected to the center window with a hinge. The lower part of the security sash is connected to the upper part of the outer guide rail, and a concave groove(51) is formed on the other end in order to be inserted into a convex protrusion(13) of the door frame. Locking loops(31,41) are included on one side section of the first and second windows, and a clamp(21) is included on both sides of the center window. |
