Title:
SPEAKER
Document Type and Number:
Japanese Patent JP2016208287
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a speaker in which acoustic performance is hardly deteriorated even if the space on the front face of the diaphragm is not hermetically sealed, and sufficient strength against external stress is obtained.SOLUTION: An electrodynamic speaker 1 has a diaphragm 2, a voice coil 3, a magnetic circuit 4, a frame 5, and a cover 7 arranged on the front surface side of the diaphragm 2, and in which a soldering terminal attached to the frame 5 is attached to a circuit substrate 12. First ventilation holes communicating a first internal space 8 formed by the frame and the diaphragm with the outside are provided in the frame, and second ventilation holes 11 communicating a second internal space 10 formed between the cover and the diaphragm with the outside are provided in the cover. The ventilation pipes 9 that extend the first ventilation holes to the back of the speaker are formed in a protruding manner from the back surface of the frame, and the ventilation pipes are inserted into the through holes provided in the substrate. The sound wave radiated from the surface side of the diaphragm is released to the outside through the ventilation holes and the sound wave radiated from the back surface side of the diaphragm is released to the outside from the back surface 12b side of the circuit board via the ventilation pipes.SELECTED DRAWING: Figure 4
Inventors:
FUJIWARA SATORU
NODA OSAMI
NARA ATSUSHI
KUROIWA SHUNSUKE
NODA OSAMI
NARA ATSUSHI
KUROIWA SHUNSUKE
Application Number:
JP2015088154A
Publication Date:
December 08, 2016
Filing Date:
April 23, 2015
Export Citation:
Assignee:
HOSIDEN CORP
International Classes:
H04R1/02; H04R1/06
Attorney, Agent or Firm:
Shoji Suzue
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