Patent ID: 11937046
Assignee: YAMAHA CORPORATION
Field: Other consumer goods (Other fields)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A sound diffuser comprising:
a first annular control member including a first communication hole and an annular inclined plate that surrounds the first communication hole and is inclined relative to an axial direction of the first communication hole;
a second annular control member including a second communication hole and an annular inclined plate that surrounds the second communication hole, houses the first annular control member therein, and is inclined relative to an axial direction of the second communication hole; and
a third annular control member that has a plurality of third communication holes and surrounds the second annular control member,
an outer end of the annular inclined plate of the second annular control member and an outer surface of the third annular control member lying on a same plane,
the plurality of third communication holes including at least one communication hole and an adjacent communication hole that are arranged so as to be adjacent to each other in a radial direction relative to the axial direction of the second communication hole, the one communication hole being closer to the second annular control member than the adjacent communication hole in the radial direction, a length in the radial direction of the one communication hole being smaller than a length in the radial direction of the adjacent communication hole.