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Specification I Title of the Invention 2, Patent 5jJ Request range Bone conduction voice 乞
External ear canal detection from the wall of the ear canal Opening in the ear canal type
microphone? In the microphone / speaker i2 in which the sound pressure is applied to the ear
canal through the discharge opening from above, the pipe is airtightly connected to the coaxial
connector, and the hollow electrode (54) w of this connector Are you allowed to receive audio
output through? The characteristic ear canal microphone combined speaker.
Microphone combined speaker attached to the ear canal
3. Detailed Description of the Invention The present invention is a combination of a transducer
for bone conduction voice during speech detection from the ear canal wall, a so-called ear canal
microphone, and a speaker for emitting voice into the ear canal, a combination of earphones and
an integrated structure No speaker. The so-called ear canal microphone is a transducer that
detects the vibration of the skull as a human being utters with the pelvic head as a speech signal
from the wall of the ear canal, and is a normal microphone that detects the sound radiated to the
outside from the lips In comparison, it is a microphone that is particularly effective for use in a
noisy environment and the like. One of the practical examples of such an external auditory canal
as shown in FIG. 1A is an external ear canal which is pressure-supported by a damper 12 inside a
cylindrical case 10 as shown in FIG. 1A. It is a microphone 16. A weight 18 is provided at the free
end of the piezoelectric element 14, and an acceleration-type vibration damper is formed by +2.
Such a microphone 16 is attached to the outer end portion of the ear canal formed by the ear
canal wall 20 and the tympanic membrane 22 as shown in FIG. 1B, and detects an audio signal
transmitted to the ear canal wall in the form of an electric signal σ. The present invention
provides this kind of ear canal microphone with the function of emitting sound so that it can be
configured as a microphone and a speaker (also characterized in that the function of the
microphone and the function of the speaker operate independently of each other) Thus, while
listening to the voice with the simultaneous call ff1i speaker, the voice can be transmitted by the
external ear canal microphone part. EndPage: Figs. 2-4 are examples of the present invention? 24
shows an attachment portion of the ear canal microphone / speaker to the ear canal, and shows
an insertion cylindrical portion in which the piezoelectric element 14 described above in relation
to I <t 13A is cantilevered by the damper 12 There is a weight 18 at its free end. y is a sound
output hole, and the sound transmitted through the hollow pipe 30 from a sound source such as
a speaker described later or emitted into the ear canal through this hole is detected by the
eardrum. The pressure hole 28 communicates with the cavity 36 through the passage 32 of the
cylinder 26. The cavity 36 is formed by an engagement part 38 with the pinna and is made of a
molded body, preferably of plastic, together with one cylindrical part 26. A hollow pipe blade is
in communication with the cavity 36 of the pinna engagement portion 38. Preferably, the pipe is
flexible so that it does not block the internal passage when it bends. Furthermore, it is preferable
that the internal passage is not blocked as well.
In the inside of the pipe (t), a shield wire 40 serving as an output lead of the piezoelectric
element 14 'extends. Although the configuration in which the cable 40 of the microphone portion
extends in the sound passage of the hollow pipe blade is shown, this configuration only uses the
sound passage of the pipe blade, so the cable may be extended separately from It is obvious that
cables or leads may be embedded in the wall of the Fig. 3 shows the configuration of the
connector at the other end of the pipe blade. 3) Figure 3A shows its appearance. Bifurcatedly,
this embodiment is in the form of a jack portion of a "lock coaxial connector". Accordingly,
electrical connection of the microphone portion can be provided to the electrical processing
device through the associated plug, which can be electrically engaged with any corresponding
plug. 4 and 4A show the plug portion. The end on the jack side of the pipe 30 in FIG. 3 is in
airtight communication with the metal case 52 of the connector jack 50. The case portion 52
works as a negative electrode of the jack 5 o. Jack's positive electrode is a hollow pin 54. This is
fixed coaxially with the case 52 by the insulating support f 356. The lead of the cable 4 o in the
pipe 30 is connected 9 to the case 52 and the hollow pin 54. The case portion 52 and the
support member 56 form an airtight cavity 58, which brings the pipe blade into communication
with the inside of the pin 54. An opening 62 is formed at the projecting end of the pin 54, and
the sound pressure from a sound source such as a speaker to be received from the opening 62 is
a hollow portion of the pin 54, a cavity 60 of jack 5 °. パイプ:30. The pinnae engaging
portion of the mounting portion of the microphone and the speaker in FIG. 2: The cavity portion
361 of the mounting portion of the microphone / speaker is transmitted to the inside of the ear
canal through the cylindrical portion 260 passage 32 and the tip w. FIG. 4 shows, for example, a
connector plug 64 attached to the casing 62 of the transceiver. The outer metal case portion 66
of the plug 64 has a flange 68, and the plug 64 is fixed to the open hole of the casing 62 by the
flange and the nut 70. The plug 64 has an inner circumferential metal portion 72 coaxial with
the case portion 66. The stiffness is supported by the insulator 74. When the jack of FIG. 1 is
engaged with the plug of FIG. 4, the hollow pin 54 of the jack 5o engages with the internal metal
portion 72, and the metal case 52 of the jack Engage with portion 66. The lock ring 53
of the jack 50 is tightened onto the threaded portion 67 of the case portion 66 of the plug 64. At
this time, the annular airtight rubber 58 of the jack 50 maintains an airtight state between the
inside of the hollow pin 54 and the inside of the inner circumferential metal portion 72 of the
plug 64.
A sound source such as a speaker 76 is detachably attached to the end of the plug 64. Does this
sound toward the open end of the hollow pin 54 of the jack 50 of the engaged Kos lid? Radiate.
This sound is the opening 28 of the ear engaging portion of FIG. It is radiated into the ear canal
via Wires W are led from the gold casing case 66 of the plug 64 and the ear portion of the inner
circumferential metal portion 72, and the electric signal detected by the microphone portion is
supplied to the microphone amplifier or the like through the cable 80i. Third connector jack 50
and plug 64 in FIG. 4 are described as comprising male and female connector sections, but of
course the relationship may be reversed, connector pins (54 Can be transmitted to the pipe I in a
sound-tight state from the speaker 76, as long as it is sufficient. The ear canal microphone and
the speaker according to the present invention can be operated independently only by the
speaker function with the microphone EndPage: 2 function A-) or the usual mode to any
relationship bag when only the my 7 function is Can be connected with A conventional lock-type
cost 乞 can be made to perform both functions of the present invention with slight modification,
and both microphone and subino 1 functions? At the same time, it is possible to operate without
affecting each other, so that the present invention configuration makes it possible to transmit
information on simultaneous calls.
4. Brief description of the drawings 11 · A is a cross-sectional view of the conventional external
ear canal microphone described in connection with the present invention, the first section IB is a
microphone of the first section IA? State diagram, attached to the human ear canal, schematic.
FIG. 12 is a schematic cross-sectional view of the pinnae engaging portion of the ear canal
microphone and speaker of the present invention. Fig. 3: In the present invention, it is convenient
for f'cono, cover σ) outline of Shack part I? 1A, 3A is theta) oblique view, 朶 4 is a schematic
drawing l of the plug part of the connector used in the present invention. 11 is a perspective
view of section I and section 4A. In the figure, 28 is a voice earth hole, 30 is a hollow pipe, and
(a) is an open end of the electrode hollow bottle 54. Patent applicant Zeslanoto Research, Inc.,
Agent of Patent Attorneys 1) Takesanbe, "D-t 'EndPage: 3
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