Ventilation duct line assembly and apparatus
AssigneesFUJIFILM Business Innovation Corp., FUJIFILM Corporation
InventorsKoichi Kumeta, Fuyuki Kokubu, Shinya Mitourida, Koh Umenai, Shogo Yamazoe, Shinya Hakuta, Akihiko Ohtsu
Life of this patent
Estimating the term…
Abstract
A first ventilation duct line has a first portion having a first sectional area, a second portion having a second sectional area larger than the first sectional area, and a third portion having an inclined inner face connecting the first portion and the second portion to each other. Further, there is a second ventilation duct line having an opening portion positioned on an inner side of the first portion of the first ventilation duct line.
Claims21
A ventilation duct line assembly comprising:
- a first ventilation duct line through which sound can pass between at least two openings, and the first ventilation duct line having a first portion having a first sectional area, a second portion having a second sectional area larger than the first sectional area, and a third portion having an inclined inner face connecting the first portion and the second portion to each other;
- and
- a second ventilation duct line that has an opening portion positioned on an inner side of the first portion of the first ventilation duct line so that sound received from the opening portion is reflected inside the second ventilation duct line and then emitted from the opening portion,
- wherein the second ventilation duct line is disposed at an inner side of the first ventilation duct line.
A ventilation duct line assembly comprising:
- a first ventilation duct line through which sound can pass between at least two openings, the first ventilation duct line having an air intake port, an air outtake port, a first portion having a first sectional area, a second portion having a second sectional area larger than the first sectional area and being closer to the air outtake port than the first portion, and a third portion having an inclined inner face connecting the first portion and the second portion to each other;
- and
- a second ventilation duct line that has an opening portion positioned on an inner side of the first portion of the first ventilation duct line so that sound received from the opening portion is reflected inside the second ventilation duct line and then emitted from the opening portion,
- wherein a bent part is disposed between the air intake port and the first portion, of the first ventilation duct line, and the second ventilation duct line is provided at a wall portion at an inner side of the bent part of the first ventilation duct line.
A ventilation duct line assembly comprising:
- a first ventilation duct line through which sound can pass between at least two openings, the first ventilation duct line having a first portion having a first sectional area, an outtake port that is one of the at least two openings and serves for discharging air, and whose area is larger than the first sectional area, and a second portion having an inclined inner face connecting the first portion and the outtake port to each other;
- and
- a second ventilation duct line that has an opening portion positioned on an inner side of the first portion of the first ventilation duct line so that sound received from the opening portion is reflected inside the second ventilation duct line and then emitted from the opening portion,
- wherein the second ventilation duct line is disposed at an inner side of the first ventilation duct line.
Dependencies are inferred from the claim text.