INDOOR DECONTAMINATION DEVICE

An indoor decontamination device configured to supply a proper amount of a decontamination mist to each corner of a decontamination target room thereby increasing efficiency of the decontamination process by shortening work time for aeration or the like. A fine decontamination mist with a favorable decontamination efficiency is employed, and the device includes main-body and a mist discharging dispersion device. The main-body includes a drive means and a liquid supply means for a decontamination chemical solution. The mist discharging dispersion device includes a mist discharging means and a mist dispersion means. The mist discharging means converts the decontamination chemical solution to the decontamination mist and supplies it into an inside of a work room. The mist dispersion means causes an acoustic flow to be generated by subjecting a vibration board to an ultrasonic vibration, causes a pressing force by an acoustic radiation pressure to act on the decontamination mist supplied into the work room, and causes the decontamination mist to be dispersed into the work room.