Patent ID: 9335734
Filing Date: 2016-05-10
CPC Classification: G03G

Claim Text:
1. A suction pipe comprising: a suction port that has an opening shape which is long in one direction parallel to a longitudinal-direction part of an object structure long in one direction, and is arranged to face the longitudinal-direction part of the object structure to suction the air; an exhaust port that has an opening shape which is different shape from the opening shape of the suction port, and suctions out the air suctioned from the suction port; a flow path that connects the suction port and the exhaust port and has at least one bended portion which bends an air flow direction, wherein the flow path contains at least a portion of the air flow direction that is parallel to the longitudinal-direction part of the object structure long in one direction; a plate-shaped blocking flow control member that is disposed at a flow path in a direction parallel to the suction port, controls a flow of the air, and that blocks air from passing and directs air through a gap adjacent to the plate-shaped blocking flow control member: and an uppermost stream flow control member, which is disposed at the site on a most upstream side in the air flow direction of the flow path, the uppermost stream flow control member being a permeable member that has a plurality of ventilation portions, wherein the uppermost stream flow control member contacts, at least at one end, the suction portion, wherein the uppermost stream flow control member is separate from the plate-shaped blocking flow control member, and wherein the plurality of ventilation portions are arranged substantially parallel to each other and extend along the air flow direction.