PURPOSE: To purify air in the neighborhood of each of sources of air pollution by exposing outside air to ozone in a leg of a table.

CONSTITUTION: Ventilation channels are formed in a vertical direction between a slit 6, and a vent 7 in a hollow pillar leg 3 which supports a top board, and an ozone generator 8 is provided in the upper part of the ventilation channels. The ozone generator 8 has an axial fan 37 and a neon tube 36 which has an electrode in a box 31 and generates ozone in the surrounding of the neon tube by applying prescribed voltage to the electrode. Outside air which enters the leg 3 from the slit 6a is discharged downward from the axial fan 3 and moves downward in the leg 3 while contacting ozone generated in the surrounding, and is discharged outside from the vent 7 after purified and deodorized by ozone.