公开(公告)号：US20190116425A1

公开(公告)日：2019-04-18

申请号：US16091211

申请日：2017-03-16

申请人： SONY CORPORATION

发明人： KATSUYA ENDO ,  YOSHIYUKI KAKU ,  TERUTAKA YANA

IPC分类号： H04R9/02 ,  H04R1/34 ,  H04R1/24 ,  H04R9/06

CPC分类号： H04R9/025 ,  H04R1/025 ,  H04R1/24 ,  H04R1/26 ,  H04R1/34 ,  H04R1/345 ,  H04R9/06 ,  H04R2499/15

摘要： A good output state of sound is ensured without a cost increase. A speaker unit includes: a vibration plate; a magnetic circuit; a bobbin to which an inner peripheral portion of the vibration plate is attached and which is varied in an axial direction by the magnetic circuit; and a cap attached to the vibration plate and located to face the bobbin in the axial direction of the bobbin, in which a center axis of the bobbin is arranged in a state of being inclined with respect to a horizontal plane or a vertical plane, and the cap is formed in a shape eccentric to the center axis of the bobbin. Thus, since the cap is eccentric to the center axis in a state in which the center axis of the bobbin is inclined with respect to the horizontal plane or the vertical plane, it is possible to freely control a pointing direction in an inclined direction, good directivity characteristics can be obtained, and a good output state of sound can be ensured without a cost increase.