AIR SUPPLY STRUCTURE OF PRESSURIZED SMOKE PROTECTION AND DISCHARGE FACILITY AND PRESSURIZED SMOKE PROTECTION AND DISCHARGE FACILITY

PROBLEM TO BE SOLVED: To enable smoke insulation to be reliably performed by efficiently homogenizing distribution of a wind speed around a smoke insulation opening section of a pressurized smoke protection and discharge facility.SOLUTION: A pressurized smoke protection and discharge facility 10 includes homogenizing means 30 which homogenizes distribution of a wind speed of an air current supplied to a smoke insulation opening section 3 as an air supply structure 20 which supplies the smoke insulation opening section 3 with air through an additional room 2 of a building 1. The air current supplied to the additional room through an air supply port reaches the smoke insulation opening section with wind speed distribution thereof homogenized in the additional room and prevents smoke from flowing into the additional room by equally pressing the air at the smoke insulation opening section.