Bass reflex port and tubular body

摘要

A bass reflex port having a tubular shape for air flows, wherein an angle of a first inner radial line with respect to a reference plane including a center axis of the bass reflex port differs from an angle of a second inner radial line with respect to the reference plane, the first line being orthogonal to the center axis and passing a first characteristic point on an inner circumference of the bass reflex port in a first transverse cross section perpendicular to the center axis, the second line being orthogonal to the center axis and passing a second characteristic point corresponding to the first characteristic point and located on the inner circumference in a second transverse cross section perpendicular to the center axis, the first transverse cross section and the second transverse cross section differing form each other in position in a direction of extension of the center axis.

主权项

1. A bass reflex port which has a tubular shape and through which air flows,
wherein an angle of a first inner radial line with respect to a reference plane that includes a center axis of the bass reflex port differs from an angle of a second inner radial line with respect to the reference plane, the first inner radial line being orthogonal to the center axis and passing through a first characteristic point located on an inner circumference of the bass reflex port in a first transverse cross section perpendicular to the center axis, the second inner radial line being orthogonal to the center axis and passing through a second characteristic point corresponding to the first characteristic point and located on the inner circumference in a second transverse cross section perpendicular to the center axis, the first transverse cross section and the second transverse cross section differing from each other in position in a direction of extension of the center axis.