To install a pressure vessel in a range hood, to adopt a general-purpose pressure vessel and a copper pipe, and to reliably install a fire extinguishing agent injection nozzle facing a necessary direction at a necessary position.

The range hood 1 provided with a body case 1a having a built-in exhaustion blower 3 is provided with: the pressure vessel 25 housed within a body case and filled with a fire extinguishing agent; an injection nozzle 24 which is installed on the lower wall part 9a of the body case and injects the fire extinguishing agent downward; piping 23 for guiding the fire extinguishing agent from the exit of the pressure vessel to the injection nozzle; and an injection nozzle holding mechanism 26 which holds the injection nozzle toward a predetermined direction. The injection nozzle holding mechanism includes: a reinforcing plate 27 which is attached from below to the edge of an opening 35 provided in the lower wall of the body case and which has an injection nozzle extension hole; and a holding member 28 which is composed of a connection part 31 fastened together and fixed to the edge and the reinforcing plate via screw means 40 and 41 from the inside of the body case and which holds the injection nozzle at a predetermined angle.