Title:
HEADPHONE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/116834
Kind Code:
A1
Abstract:
There is provided a headphone device including: an external magnet type magnet unit that is disposed outside a voice coil, and vibrates the voice coil; and a diaphragm that is vibrated by vibration of the voice coil, and formed of a material in which a dome section having an outward concave shape on an inner circumference of the voice coil is continuous with an edge section outside the voice coil.
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Inventors:
NAGENO KOJI (JP)
OIDE KENICHI (MY)
KANAYAMA SHINSUKE (MY)
CHIA PINGWEE (MY)
HENG CHINNGIAP (MY)
OIDE KENICHI (MY)
KANAYAMA SHINSUKE (MY)
CHIA PINGWEE (MY)
HENG CHINNGIAP (MY)
Application Number:
PCT/JP2017/043840
Publication Date:
June 28, 2018
Filing Date:
December 06, 2017
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04R1/10; H04R7/12; H04R9/06; H04R9/02
Domestic Patent References:
| WO2016170595A1 | 2016-10-27 |
Foreign References:
| US20090136055A1 | 2009-05-28 | |||
| JPS514328U | 1976-01-13 | |||
| US20120328147A1 | 2012-12-27 | |||
| GB219470A | 1924-07-31 | |||
| JP5194434B2 | 2013-05-08 |
Attorney, Agent or Firm:
KAMEYA, Yoshiaki et al. (JP)
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