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1. (WO2018034438) EARPHONE

Pub. No.:    WO/2018/034438    International Application No.:    PCT/KR2017/007945
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Tue Jul 25 01:59:59 CEST 2017
IPC: H04R 1/28
H04R 1/10
Applicants: LG ELECTRONICS INC.
엘지전자 주식회사
Inventors: NA, Yonghyuk
나용혁
CHOI, Byungkil
최병길
Title: EARPHONE
Abstract:
In order to control the output in a low-pitched sound domain zone or a specific frequency domain zone of an earphone, provided is an earphone comprising: a driver unit; a housing forming an electric component part so as to load the driver unit; a groove formed along a first path on the inner surface of the housing; a pipeline damper covering the inner surface of the housing so as to form a pipeline along the groove; a first external base hole formed in the housing at a first point of the pipeline; and an internal base hole formed in the pipeline damper at a second point of the pipeline.