Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshiyuki Matsumura0
Akiko Fujise0
Atsushi Sakaguchi0
Sawako Kano0
Shuji Saiki0
Date of Patent
April 19, 2016
0Patent Application Number
140038920
Date Filed
January 29, 2013
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An earphone includes: a loudspeaker unit; a sound conductive tube which is connected to a front surface having a diaphragm included in the loudspeaker unit, and has a hole through which a sound generated from the loudspeaker unit is emitted; a housing which is connected to a back surface of the loudspeaker unit so that a space is formed between the housing and the back surface of the loudspeaker unit, and has a first air hole connecting the space to external air; a first braking part which closes a sound hole of the loudspeaker unit; and a second braking part which closes the first air hole.
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