US 12,392,150 B2
Booth
Masao Yamaguchi, Tokyo (JP)
Assigned to Toshiba Tec Kabushiki Kaisha, Tokyo (JP)
Filed by TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 13, 2022, as Appl. No. 17/944,161.
Claims priority of application No. 2021-197080 (JP), filed on Dec. 3, 2021.
Prior Publication US 2023/0175276 A1, Jun. 8, 2023
Int. Cl. E04H 1/12 (2006.01); G10K 11/02 (2006.01)
CPC E04H 1/125 (2013.01) [G10K 11/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A booth comprising:
one or more wall plates surrounding an internal space;
a ceiling plate connected to the wall plates and above the internal space; and
a communication portion connected to either the ceiling plate or an upper part of one of the wall plates and through which air flows between the internal space and an outside of the booth, wherein
the communication portion includes a plurality of area portions arranged along an air flow direction and each having an opening through which the air flows, the area portions including at least first, second, third, fourth, and fifth portions in this order from the outside of the booth towards the internal space,
a first area of the opening of the first portion that is perpendicular to the air flow direction is smaller than a second area of the opening of the second portion that is perpendicular to the air flow direction,
a third area of the opening of the third portion that is perpendicular to the air flow direction is smaller than the second area,
a fourth area of the opening of the fourth portion that is perpendicular to the air flow direction is greater than the third area, and
a fifth area of the opening of the fifth portion that is perpendicular to the air flow direction is smaller than the fourth area.