公开(公告)号：US20230345179A1

公开(公告)日：2023-10-26

申请号：US18133772

申请日：2023-04-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshitaka KAWASHIMA ,  Yuki ISHII ,  Yuuki IZUMI

IPC: H04R7/12 ,  H04R9/02 ,  H04R9/06

CPC classification number: H04R7/122 ,  H04R9/025 ,  H04R9/06

Abstract: A sub cone for use in a loudspeaker includes a slanted portion that has an aperture area that increases toward an emission direction in which sound is emitted from the loudspeaker and a rim portion that is annular in shape and extends linearly outward from an edge of a distal end of the slanted portion in a direction orthogonal to the emission direction.