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JP2003244782

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DESCRIPTION JP2003244782
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
bone conduction type speaker, and more particularly, to a speaker of a type in which sound is
heard by being brought into contact with the head and transmitting vibration of a diaphragm to
bone tissue.
[0002]
The mechanism by which a human listens to sound is as follows.
[0003]
First of all, the sound is collected by the pinnacle and this sound is transmitted to the eardrum
through the ear canal.
The tympanic membrane receives the sound and vibrates, and this vibration is transmitted to the
peroneal ossicles consisting of punctum and rabbitfish. The earlobe transmits this vibration to
the cochlea, and the inner ear fluid in the cochlea vibrates, which is converted to an electrical
signal. This electrical signal is transmitted to the auditory nerve and transmitted to the brain.
[0004]
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1
Since the human being listens to the sound in this way, deafness which makes it difficult to hear
the sound occurs when there is a failure in any of the above-mentioned organs.
[0005]
There are the following three types of this deafness.
Aural hearing loss with impairment in the external ear and inner ear, Sensory hearing loss with
internal indication and hearing nerve impairment, Mixed hearing loss across both transmitted
noise deafness and sensorineural hearing loss.
[0006]
An object of the present invention is to provide a bone conduction type speaker which can listen
to a sound even if it is a person having such deafness.
[0007]
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a bone
conduction type speaker according to the present invention is constituted by the following
members.
[0008]
Magnetic poles that make up a magnetic circuit.
[0009]
Ring shaped electromagnet.
[0010]
Voice coil for flowing signal current.
[0011]
A diaphragm that is vibratably supported by a cushion.
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2
[0012]
An auxiliary diaphragm that is vibratably supported by an auxiliary cushion.
[0013]
A mounting pin provided in contact with the diaphragm and the auxiliary diaphragm and serving
to transmit the vibration of the diaphragm and the auxiliary diaphragm.
[0014]
Vibration transmission part for transmitting vibration to the user attached to the mounting pin.
[0015]
Hereinafter, it will be described whether the present invention configured as described above
works to solve the problem.
[0016]
When an electric signal flows through the voice coil, the magnetic flux of a magnetic circuit
composed of a magnetic pole, an electromagnet, and a diaphragm changes, and the diaphragm
vibrates according to the electric signal.
This vibration is transmitted to the user's skull via the vibration transmission unit and further
transmitted to the cochlea.
As a result, even if the external or inner ear is damaged, it is possible to jump over the location
and transmit the sound to the brain.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present
invention will be described below with reference to the drawings.
[0018]
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3
FIG. 1 is a schematic view of the present invention.
[0019]
The bone conduction type speaker according to the present invention is supported by a magnetic
pole 1, a toroidal voice coil 3 surrounding the magnetic pole 1, a toroidal electromagnet 2
disposed outside the voice coil 3, and a cushion 4 provided on a cover 10. A diaphragm 5, an
auxiliary diaphragm 7 supported by an auxiliary cushion 6 provided on the cover 10, a mounting
pin 8 supported by the diaphragm 5 and the auxiliary diaphragm 7, and a vibration transmitting
portion 9 attached to the mounting pin 8 Be done.
[0020]
As described above, according to the present invention, it is possible to provide a bone
conduction type speaker which enables even a person with hearing loss to hear sound. .
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