A CAMERA HOUSING HAVING DOOR FOR INNER OBSERVATION OF FURNACE

PURPOSE: A housing with an opening/closing unit for an inside-of-furnace monitoring camera is provided to facilitate focus adjustment and replacement of a lens of a monitoring camera or maintenance of the monitoring camera located in a housing. CONSTITUTION: An inner pipe (20) accommodates a monitoring camera inside of a rear end part (22). In the rear side of the inner pipe, a first nitrogen inlet (23) is formed. A front cover (30) finishes the front face of a cooling water passage (11). A rear cover (40) finishes the cooling water passage and the rear face of the inner pipe. An outer plate (51) of a door (50) is engaged with an inner plate while forming a hollow unit.