The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2020
Filed:
Jul. 11, 2018
Applicant:
Alpine Electronics, Inc., Ota-ku, Tokyo, JP;
Inventor:
Kei Tanabe, Iwaki, JP;
Assignee:
ALPINE ELECTRONICS, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 7/18 (2006.01); H04R 7/02 (2006.01); H04R 7/06 (2006.01); H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
H04R 9/022 (2013.01); H04R 7/02 (2013.01); H04R 7/18 (2013.01); H04R 9/025 (2013.01); H04R 9/04 (2013.01); H04R 9/06 (2013.01); H04R 2400/11 (2013.01);
Abstract
A speaker includes spacers that are disposed between a front end portion of a top yoke, which serves as a first member, and a back end portion of a back portion of a frame, which serves as a second member, to form a gap that defines an air passage. When a bobbin and a vibrating plate vibrate in a front-back direction, an airflow through the air passage, which faces a voice coil, is formed between the space around a magnetic gap and the outside. Accordingly, the voice coil is cooled over the entire circumference thereof.