Title:
TWEETER UNIT AND EARPHONE
Document Type and Number:
Japanese Patent JP2018007220
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a tweeter unit of a small diameter which can obtain a sufficient sound volume in a high frequency band, and an earphone using the same.SOLUTION: A diaphragm 21 is vibrated by a piezoelectric element and an MEMS, and a sound is reflected by a reflecting material 25 and is directed in the direction of a sound emission axis. By inclining the diaphragm 21 with respect to the sound emission axis, the volume of treble can be increased. Such a tweeter unit 2 is provided. In addition, an earphone using the tweeter unit 2 and a woofer unit 3 is provided.SELECTED DRAWING: Figure 2
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Inventors:
WATABE YOSHIYUKI
Application Number:
JP2016136460A
Publication Date:
January 11, 2018
Filing Date:
July 09, 2016
Export Citation:
Assignee:
O2AID INC
International Classes:
H04R1/10; H04R1/26; H04R1/28; H04R1/30; H04R11/00; H04R17/00
Attorney, Agent or Firm:
Hiroshi Kaneko
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