Indoor fire hydrant for building

The present invention relates to an indoor fire hydrant for extinguishing a fire in a building. More specifically, the indoor fire hydrant for extinguishing a fire in a building comprises: a housing having a rectangular box shape and inserted into an embedding space formed on an interior wall of a building, and having an internal accommodation space and a front opening part of which a front portion is opened; a cover which is hinge-coupled to one side of the front of the housing via a hinge shaft, and rotates to the left and right around the hinge shaft as a rotary shaft to open or close the front opening part of the housing; and an opening/closing means horizontally penetrating the cover toward the internal accommodation space of the housing, and including a rotary shaft of which one end is positioned inside the cover and of which the other end is exposed to the front of the cover, a manual handle coupled to the other end of the rotary shaft to rotate the rotary shaft forward and backward, and a locking bar integrally formed on the rotary shaft in a state of being perpendicular to the rotary shaft to be positioned inside the cover, and rotated in the same direction as the rotating direction of the rotary shaft. A stopping protrusion extended in a prescribed length from the inner edge of the front opening part toward the center of the housing is formed on the housing. An end of the locking bar is positioned on the rear of the stopping protrusion when the rotary shaft is rotated in one direction while the edge of the rear surface of the cover comes in contact with the front surface of the stopping protrusion. A proximity sensor is mounted on the inner edge of the front opening part formed on the housing to sense whether the cover is opened and closed by the proximity sensor. According to the present invention, a user can rotate the rotary shaft in front of the cover to change the position of the locking bar rotated in the same direction as the rotating direction of the rotary shaft to lock or unlock the cover so as to prevent theft of or damage to a firefighting instrument accommodated in the indoor fire hydrant. 본 발명은 건축물 소방용 옥내 소화전에 관한 것으로서, 보다 상세하게는, 건축물의 실내 내벽에 형성된 매립 공간의 내측에 삽입되는 직사각형의 박스 형태이며, 내부 수용공간이 마련되고, 전방이 개방된 전면 개구부가 형성된 함체와, 함체의 전방 일측에 힌지축을 매개체로 힌지결합되며, 힌지축을 회동축으로 하여 좌우방향으로 회동하여 함체의 전면 개구부를 개방 또는 폐쇄하는 커버 및 함체의 내부 수용공간을 향해 커버를 수평으로 관통하되, 일단은 커버의 내측에 위치하고, 타단은 커버의 전방으로 노출된 회전축과, 회전축이 정역회전되도록 회전축의 타단에 결합된 수동 핸들과, 회전축에 직교한 상태로 회전축에 일체로 형성되어 커버의 내측