Fireproof window with hidden automatic locking hardware

The utility model discloses a fireproof device, and particularly relates to a fireproof window with hidden automatic locking hardware. The fireproof window comprises a window frame, a window sash, a mullion and fireproof glass, wherein the window frame, the window sash and the mullion are all of a double-cavity structure; a cavity structure is arranged between the window sash and the fireproof glass; a thermal induction spring device, a spring wind brace and an automatic lock locking seat are installed in a cavity of the window frame and a cavity of the window sash. The fireproof window has the advantages that rapid spreading of fire can be effectively blocked, the fire is effectively controlled to be within a specific area, and the window is generally not afraid of fire due to the fact that the window is made of fireproof materials; and meanwhile, an automatic induction spring device is arranged in the window, so that the unmanned locking effect can be achieved. 本实用新型公开了一种防火装置，具体是指一种带隐藏式自动锁闭五金的防火窗。本实用新型包括窗框、