JP2008283326A - Earphone microphone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an earphone microphone for enabling a person suffering from perceptive deafness to hear with a clear sound without being annoyed by any surrounding sound according to his or her slight, middle and serious symptom, and to perform transmission/reception by interrupting the surrounding noise with the volume of a speaker output sound ranging from a small volume which is less than 70 dB to a large volume which is 90 dB or more. <P>SOLUTION: An earphone microphone 1 is provided with: a first earphone 2 having a speaker SP to be mounted on one ear; a second earphone 3 having a microphone Mic to be mounted on the other ear; a changeover switch SW for switching the ON/OFF of the microphone; and a connection means 5 for connecting those changeover switch, speaker, and microphone to communication equipment such as a portable telephone. The microphone Mic of the second earphone is configured as a microphone for picking up and fetching a sound in an external acoustic meatus, and the first earphone and the second earphone are respectively provided with an ear pad 11 for closing the external acoustic meatus when it is mounted on the ear. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is an earphone microphone that is used by being connected to a communication device such as a mobile phone, a telephone set, and a wireless device, and an audio device such as a portable audio player, etc. The present invention relates to an earphone microphone that can hear sound and music from each device with clear sound and can also transmit and receive speech.

  In recent years, the spread of mobile phones has been remarkable, and it has become possible not only to communicate in social life but also to listen to music using a mobile phone or to watch a TV using a 1Seg mobile phone. However, unfortunately, hearing-impaired deaf people cannot use these versatile mobile phones. This is because if a mobile phone is used with a hearing aid, oscillation and echo are generated and it cannot be used for telephone conversations. Moreover, when a hearing aid is not used, a large volume of 70 dB to 110 dB or more is necessary, and the surroundings are troubled. In addition, there was a problem that it was difficult to hear due to a level of noise that would not be noticed by normal listeners, and not only communication but also music and TV could not be enjoyed.

  In view of the above circumstances, there has been proposed an ear microphone that can ensure a good call even in a place where the surrounding noise is intense (see, for example, Patent Document 1). This ear microphone has a pair of separate type earphones attached to both ears for use as a handset of a mobile phone, and is located on one earphone as a speaker and on the other earphone as a mouthpiece. In addition to the first microphone (condenser microphone) used, the second microphone (bone conduction microphone) is used, and when there is noise in the surroundings, the second microphone is used to ensure a good call. To be able to.

  However, since the ear microphone of Patent Document 1 also employs a microphone that picks up bone conduction sound, it does not pick up surrounding noise, but it uses a rubbing sound of clothes, connection lines, etc., body vibration and body as a medium. There is a problem that surrounding vibration is picked up and transmitted to the other party as noise. In addition, the bone conduction microphone has no intelligibility because it has a basic structure in which the vibration of the vocal cords is transmitted through the bone and the mechanically transmitted vibration is picked up by the pickup microphone. Therefore, the current situation is that it has not spread even after 20 years. In addition, the pickup microphone attached to the ear needs to be in close contact with the bone part, but it is difficult to keep in close contact during work, etc., and it is necessary to stick and hold it with tape etc., and the tape may be peeled off with sweat etc. There was also a problem.

  In addition, since the earphone attached to the ear canal is not in close contact with the ear canal and seals the ear canal, the surrounding noise enters the ear canal through the gap and becomes difficult to hear through the speaker. Since it is used at an output that is about 4 dB to 10 dB higher than the noise, if it exceeds the noise exposure tolerance standard, a social problem that is usually called earphone deafness has occurred. Moreover, aside from normal hearing, sound-sensitive deaf people have differences in light, medium and severe deafness, but there is a problem that they cannot be heard unless the speaker output sound is approximately 70 dB to 110 dB. Was necessary.

JP-A-10-56682

  Therefore, the present invention solves the conventional problems as described above, and even if the speaker output sound is low by blocking the ambient noise, not only the normal hearing person but also the sound-sensitive hearing person is not bothered by the ambient noise. An object of the present invention is to provide an earphone microphone that can be heard with a clear sound and can transmit and receive without being affected by ambient noise.

  In order to achieve the object, the invention according to claim 1 includes a first earphone having a speaker and attached to one ear, a second earphone having a microphone and attached to the other ear, The microphone includes a changeover switch for switching on and off the microphone, and a connection means for connecting the changeover switch, the speaker, and the microphone to a communication device such as a mobile phone, and the microphone of the second earphone picks up and captures the sound in the ear canal The first earphone and the second earphone have an ear pad that seals the ear canal when worn on the ear.

  The invention according to claim 2 is, in claim 1, wherein the connection means includes a connection part such as a plug connected to the communication device, a first connection line connecting the connection part and the speaker of the first earphone, It has the 2nd connection line which connects the microphone of the above-mentioned connection part and the 2nd earphone, and the change-over switch is provided in the 2nd connection line, It is characterized by the above-mentioned. According to a third aspect of the present invention, in the second aspect, the change-over switch is connected at both the positions of the first connection line and the second connection line at the first and second earphones having a predetermined length from the connection portion. It is arranged in a switch box provided so as to bundle wires.

  According to a fourth aspect of the present invention, there is provided a first earphone having a first speaker and attached to one ear, a second earphone having a second speaker and a microphone, and attached to the other ear. A first changeover switch for turning on and off the microphone, a second changeover switch for turning on and off the second speaker, the first and second changeover switches, the first and second speakers, and the microphone as a mobile phone, etc. The second earphone microphone is a microphone that picks up and captures the sound in the ear canal, and the first earphone and the second earphone are connected to an audio device such as a communication device or a portable audio player. The ear pad for sealing the ear canal when worn on the ear is provided.

  According to a fifth aspect of the present invention, in the fourth aspect, the connection means connects a connection portion such as a plug connected to a communication device or an audio device, and the connection portion connects the first speaker of the first earphone. 1 connection line, a second connection line for connecting the connection portion and the microphone of the second earphone, and a third connection line for connecting the connection portion and the second speaker of the second earphone. The second connection line is provided with a first changeover switch, and the second connection line and the third connection line are provided with a second changeover switch. A sixth aspect of the present invention is the first aspect of the present invention, wherein the first changeover switch and the second changeover switch are provided with a first connection line on the first and second earphones having a predetermined length from the connection portion, It is characterized by being arranged in a switch box provided to bundle these connection lines at the positions of the second connection line and the third connection line.

  This invention is as described above, and the invention according to claims 1 to 3 is characterized in that the microphone of the second earphone is not a bone conduction microphone but a microphone that picks up and captures the sound in the ear canal. Without picking up surrounding vibrations such as rubbing noises of connection lines, etc., it can be transmitted to the other party with clear sound without noise. In addition, since the first and second earphones that are separate types have ear pads that seal the ear canal when worn on the ears, even if the speaker output sound is low by blocking ambient noise, Enables hearing-impaired listeners to hear clear sounds without being bothered by ambient noise, and prevents oscillation and echo even at a loud volume exceeding 90 dB, which is necessary for persons with moderate to severe hearing sensitivity You can also Therefore, when applied to a handset of a mobile phone, the call sound can be clearly transmitted to the other party, which is effective for a hearing-impaired hearing person.

  In addition to the above-described effects, the inventions according to claims 4 to 6 can be selectively connected to an audio device such as a portable audio player to view music, thereby improving convenience. .

  Embodiments of the present invention will be described with reference to the accompanying drawings.

[Embodiment 1]
The first embodiment shows a call-only type earphone microphone. 1 is an overall schematic diagram of an earphone microphone, FIG. 2 is a drawing showing an example of its use, and FIG. 3 is a drawing showing a circuit configuration diagram.

  Reference numeral 1 denotes an earphone microphone. The earphone microphone 1 has a speaker SP, a first earphone 2 that is attached to one ear, a second earphone 3 that has a microphone Mic and is attached to the other ear, A change-over switch SW for switching on and off the microphone Mic and a connection means 5 for connecting the change-over switch SW, the speaker SP, and the microphone Mic to a communication device (not shown) such as a mobile phone, a telephone set, and a wireless device are provided.

  The connection means 5 includes a plug 6 as a connection portion connected to a jack or the like of the communication device, a first connection line 7 connecting the plug 6 and the speaker SP of the first earphone 2, a plug 6 and a second connection. And a second connection line 8 for connecting the microphone Mic of the earphone 3. A switch box 9 is provided at a position of the first connection line 7 and the second connection line 8 on the side of the first and second earphones 2 and 3 having a predetermined length from the plug 6 so as to bundle both connection lines, The box is provided with a change-over switch SW on the second connection line 8. The second connection line 8 is provided with a resistor R in addition to the changeover switch SW. The microphone Mic of the second earphone 3 is a microphone that picks up and captures sound in the ear canal (not sound due to bone conduction) from the eardrum side. The bone conduction microphone picks up the mechanical propagation sound with a pick-up microphone and transmits it as an audio signal. In this microphone Mic, the air vibration sound caused by the air propagation sound shakes the diaphragm of a general condenser microphone and uses it as the audio signal. To transmit. Reference numeral 11 denotes an ear pad that seals the external auditory canal, and is attached to an insertion portion of the earphone 2 and 3 into the ear hole of the main body described later.

  The internal structure of the first earphone 2 and the second earphone 3 will be described in detail. First, the first earphone 2 includes a hollow main body 15 having an insertion portion 14 with an opening 13 formed in a size that fits the ear hole as shown in FIG. The main body 15 is made of synthetic resin, has a substantially cylindrical shape that is circular when viewed from the side, has no opening other than having an opening 13 in the insertion portion 14, and has a sealed hollow portion inside. The insertion portion 14 is provided so as to protrude from the center of the side surface of the main body 15, and the outer periphery thereof is made of an elastic material such as rubber, and the ear pad 11 that is in close contact with any size of the ear hole (the ear canal) is fitted. Yes. The main body 15 is fitted with a half portion 15a on the ear pad 11 side and a half portion 15b on the opposite side. Further, a ring member 17 is interposed on the outer periphery of the half portion 15b, and the first connecting wire 7 is accommodated. One end widened portion of the tube body 18 is attached by fitting and integrated.

  An elastomer 19 is formed in the main body 15 so as to be sealed except for one sound emission hole, so that a speaker SP that amplifies an audio signal received from the communication device forms an inner layer on the insertion portion 14 side. It fits and is fixed in the formed mold hole 16. The speaker SP is provided with the sound emitting hole (not shown) facing the opening 13 of the insertion portion 14. In addition, a sound emission path 20 that is slightly expanded in a funnel shape is formed over a predetermined length from the sound emission hole of the speaker SP to the insertion portion 14 in the direction with the opening 13. The sound emission path 20 of the speaker SP is formed in a double wall structure by the synthetic resin of the main body 15 and the elastomer 19 or the main body 21 of the ear pad 11 described later, so that external noise can be suppressed.

  The ear pad 11 is made of silicone rubber suitable for a living body, and has a main body 21 that is formed in a hollow cylindrical shape and is open at both ends at the front and rear ends. The main body 21 is formed with an annular locking convex portion 22 at an inner peripheral surface intermediate portion, and annular concave portions 23 and 24 are formed on the front and rear sides thereof. Then, the locking projection 22 is fitted and locked to an annular locking recess 26 formed on the outer peripheral surface of the insertion portion 14 of the main body 15 of the earphone 2, and the annular projection formed on the outer peripheral surface of the recesses 23 and 24. By fitting 27 and 28, the ear pad 11 is attached to the insertion portion 14 of the main body 15 of the earphone 2 as illustrated. A large number of thin pleated sound insulation walls 25 made of the same material as the main body 21 are integrally provided in a ring shape at predetermined intervals in the axial direction on the outer peripheral surface of the main body 21 of the ear pad 11. These sound insulation walls 25 all have the same outer diameter and are slightly inclined toward the rear end side. In addition, the sound insulation wall 25 does not stimulate a sensitive tactile sensation of the ear canal, and the wall thickness is reduced toward the outer peripheral edge in order to maintain the soft wearability required for the ear pad 11. When the earphone 2 is mounted on the ear, the ear pad 11 configured in this manner is bent by the sound insulation wall 25 formed on the outer periphery being bent on the side opposite to the insertion side, and the outer peripheral edge contacts the inner wall of the ear canal so that the ear canal is Seal.

  Reference numeral 29 denotes a munch (made by Bridgestone) that forms an inner layer opposite to the insertion portion 14 of the main body 15. The front end of the main body 15 is in contact with the rear end of the elastomer 19 and the rear end of the speaker SP. Is disposed in close contact with the half portion 15 b of the main body 15. Munches 29 is a product name of MNCS (Micro Network Controlled Structure), and is a thermoplastic material that forms a structure close to human cells using a compound technology of special polymer and oil. The Munches 29 is excellent in vibration resistance and chemical resistance. The Munches 29 is shown as an example of a sound absorbing material, and may be replaced with one having the same effect.

  Next, as shown in FIGS. 5 and 6, the second earphone 3 has a structure including a hollow main body 15 having an insertion portion 14 with an opening 13 formed in a size that fits the ear hole. The basic configuration, such as being provided and having an ear pad 11, is the same as that of the first earphone 2 shown in FIG. Therefore, the same members are denoted by the same reference numerals, the description thereof is simplified, and different configurations are mainly described.

  In the earphone 3, a microphone Mic that picks up and captures the sound in the ear canal as a sound signal transmitted as air vibration through the opening 13 of the insertion portion 14 in the body 15 is fitted and fixed in a mold hole 32 formed in the elastomer 31. Has been. The elastomer 31 closes the opening 13 so as to form an inner layer on the insertion portion 14 side of the main body 15, and the outer surface thereof is disposed in close contact with the half portion 15 a. A sound collection hole 33 is provided in the center of the front surface facing the opening 13 side of the microphone Mic. A hemispherical sound collecting hole 34 is formed in front of the sound collecting hole 33, and a sound collecting path 35 is formed in a slightly upper front thereof, and the front end of the sound collecting path is formed on the front end surface of the elastomer 31. It communicates with the opening 13 through one end of a branch sound path 36 formed in a groove shape in the lateral direction. A sound collecting path 37 is formed in the elastomer 31 without the mold hole 32 through the branch sound path 36 in parallel with the sound collecting path 35, and its front end opening is one end of the branch sound path 36 where the sound collecting path 35 is located. And the rear end opening communicates with the internal space 38 of the elastomer 31. A sound collection hole 39 having the same diameter as that of the sound collection hole 33 is provided on the rear surface of the microphone Mic near the rear end opening of the sound collection path 37 and slightly above.

  The sound collecting hole 33 on the front surface of the microphone Mic communicates with the opening 13 through a sound collecting hole 34, a sound collecting path 35, and a branching sound path 36 formed in the elastomer 31, and can collect sound in the ear canal from the opening side. It has become. On the other hand, the sound collecting hole 39 on the rear surface faces the sealed internal space 38 and communicates with the opening 13 through the sound collecting path 37 and the branching sound path 36 formed in the elastomer 31, and the sound in the ear canal from the opening 13 side. Part of the sound, that is, the remaining diffracted sound that is not absorbed or attenuated by the Munches 29 or the like by the sound that has entered the internal space 38 from the sound collection path 37 can be collected. Reference numeral 41 denotes a tube body that accommodates the second connection line 8.

  Next, the operation (usage method) of the earphone microphone 1 will be described. In order to make a normal call by connecting to a communication device, the first earphone 2 is attached to one ear and the second earphone 3 is attached to the other ear as shown in FIG. At this time, the sound insulation wall 25 of the ear pad 11 attached to the insertion part 14 of both earphones is inserted to the position where it is gradually fitted and falls, and the outer peripheral edge of the ear pad 11 comes into contact with the inner wall of the ear canal to seal the ear canal. At the same time, the sound insulation wall 25 bites into a wedge shape, so that the mounting is extremely stable. In addition, since several sealed spaces are formed between the adjacent sound insulating walls 25 and 25, the sealing effect and the sound insulating properties are excellent due to the attenuation effect of these sealed spaces, and the inside of the ear canal is sealed. . Therefore, the sound that tries to enter the ear canal from the outside is prevented by the outer peripheral edge of the sound insulation wall 25 of the ear pad 11 contacting the inner wall of the ear canal and sealing the ear canal.

  In parallel with the attachment to the ear, the plug 6 is connected to the jack of the communication device. Then, the change-over switch SW is turned on, and a call is performed in this on state. That is, the voice of the other party from the communication device is amplified by the speaker SP in the earphone 2 through the first connection line 7 and transmitted to the user. Also, the sound spoken by the user is picked up by the microphone Mic in the earphone 3 as the sound in the ear canal, transmitted to the telephone device via the second connection line 8, and transmitted to the other party. At this time, it may be possible that the microphone Mic picks up noise at the same time and cannot send a sensitive sound to the communication device, but there is no concern even in such a case.

  This will be described in detail with reference to FIG. 5. In addition to the direct uttered sound from the mouth, the sound spoken by the user is a sound in the ear canal having strong directivity from the eardrum side as indicated by an arrow a. From the two ends of the branch sound path 36 and enters the sound collection path 35 and the sound collection path 37 respectively, and 100% of the sound is collected from the sound collection hole 34 through the sound collection hole 33 of the microphone Mic. At the same time, the sound that enters the sound collecting path 37 is dispersed in the internal space 38 as indicated by an arrow b, and about 90% is absorbed and attenuated by the Munches 29, and the remaining diffracted sound is about 10%. As shown, the sound is collected at the sound collection hole 39 of the microphone Mic. Then, the difference between the sound pressures of the sounds entering the sound collection holes 33 and 39 is inputted to the diaphragm in the microphone Mic with plus and minus and cancel each other, but about 90% of the audio signal in the ear canal is not canceled out. The sufficient remaining voice is transmitted to the communication device via the second connection line 8 and sent to the other party, so that it does not disappear. In addition, although there is a sound of the speaker SP as noise, even if this sound is an output of about 70 dB or more to 110 dB necessary for a hearing-impaired deaf person, the earphone that is separately attached to the ear opposite to the microphone Mic is mounted. 2 so that it does not enter the microphone Mic. Therefore, it is possible to send a sound with no noise and high sensitivity from the microphone Mic. In addition, in this case, there is no influence of oscillation and echo.

  The above is not a problem if the user is a normal hearing person, but the right and left audibility is not the same in a sound-sensitive deaf person, so the method of using it requires some ingenuity. Even if the audibility is poor, the sound in the ear canal is the same as usual. When a hearing-impaired deaf person uses the earphone microphone 1 using this, the first earphone 2 dedicated to the speaker SP is attached to the ear with the better (higher) audibility of the left and right ears, and the other The earphone 3 dedicated to the microphone Mic is attached to the ear whose audibility is poor (low). In this way, the speaker SP and the microphone Mic are separated into the left and right ears, no oscillations or echoes are generated, and a mildly deaf person does not have an adverse effect on the hearing that the sensory deaf person cannot hear. Can be heard well from the speaker SP, and a loud sound of over 80 dB can be output to a person with moderate or severe hearing loss. The microphone Mic can send audio in the ear canal as usual. it can.

  In addition, the hearing-impaired deaf person cannot hear large sounds, but has a poor cocktail party effect that distinguishes only human voices and TV and music sounds from complicated environmental sounds. However, it is possible to hear only the sound output from the earphone 2 by sealing the ear canal of the hearing-impaired hearing person with the ear pad 11, so that the ability to distinguish is not necessary and the masking phenomenon is also caused. It can be heard well because it can concentrate on the output sound from the earphone 2.

  Furthermore, for the purpose of preserving human hearing, the audible sensitivity automatically increases and decreases in accordance with the surrounding sound field environment for the purpose of always listening to the surrounding environmental sound. For example, in a noise environment exceeding 80 dB, the sensitivity of hearing becomes dull. In an environment without sound like midnight, the sensitivity of hearing becomes sharper as the sound of “scene” is felt. Even in such a case, since the ear canal is sealed with the ear pad 11 and the surrounding sound is cut by about 30 dB, the sensitivity of hearing is automatically increased, so that the hearing-impaired person can easily hear. According to the applicant's investigation, the earphone sealed with the ear pad 11 is 1 kHz to 3 kHz above the normal audible range, although the ear horn sealed with the ear pad 11 has individual differences in the audible frequency band. It has been found that it can be heard up to high bandwidth.

[Embodiment 2]
The second embodiment shows an earphone microphone for both audio and video. 7 is an overall schematic diagram of the earphone microphone, FIG. 8 is a drawing showing an example of its use, and FIG. 9 is a drawing showing a circuit configuration diagram.

  Reference numeral 51 denotes an earphone microphone. This earphone microphone 51 has a first speaker SP1, has a first earphone 52 to be attached to one ear, a second speaker SP2, and a microphone Mic, and has the other ear. The second earphone 53 to be mounted, the first change-over switch SW1 for switching on / off of the microphone Mic, and the on / off of the second speaker SP2 and the microphone Mic are turned off when the second speaker SP2 is on, When the second speaker SP2 is off, the second change-over switch SW2 that switches simultaneously so that the microphone Mic is turned on, the first and second change-over switches SW1, SW2, the first and second speakers SP1, SP2, and The microphone Mic is connected to a communication device (not shown) such as a mobile phone or a portable audio device. It is provided with connecting means 55 for connecting to an audio device (not shown) such as Ya. The second change-over switch SW2 may be a switch having a function only for turning on / off the second speaker SP2.

  The connection means 55 includes a plug 56 as a connection portion connected to a jack of a communication device or an audio device, a first connection line 57 that connects the plug 56 and the speaker SP1 of the first earphone 52, and a plug 56. The second connection line 58 for connecting the microphone Mic of the second earphone 53 and the third connection line 59 for connecting the plug 56 and the second speaker SP2 of the second earphone 53 are provided. The connection lines are bundled at the positions of the first connection line 57, the second connection line 58, and the third connection line 59 on the side of the first and second earphones 52 and 53 having a predetermined length from the plug 56. A switch box 60 is provided. In the box, the changeover switch SW1 is provided on the second connection line 58, and the changeover switch SW2 is provided on the second connection line 58 and the third connection line 59. Has been placed. The second connection line 58 is provided with a resistor R in addition to the changeover switches SW1 and SW2. The microphone Mic of the second earphone 53 is a microphone that picks up and captures audio in the ear canal. Reference numeral 61 denotes an ear pad for sealing the external auditory canal, which is attached to an insertion portion of the earphone 52, 53, which will be described later, into the ear hole of the main body.

  The first earphone 52 of the second embodiment has the same structure as the first earphone 2 of the first embodiment shown in FIG. Therefore, detailed description of the internal structure is omitted here to avoid duplication of description. As shown in FIG. 7, only the speaker display is set to SP1 instead of SP. On the other hand, the second earphone 53 has a speaker SP2 in addition to the microphone Mic, and has a structure different from that of the second earphone 3 of the first embodiment. That is, the second earphone 53 is as shown in FIG. 10, but as is clear from the comparison between FIG. 4 and FIGS. 4 and 5, the speaker SP and the microphone Mic arranged in these earphones 2 and 3 are the same. The internal structure is as described above. For this reason, the same members are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 10, only the speaker display is set to SP2 instead of SP. In FIG. 10, reference numeral 63 denotes a tube body that accommodates the second connection line 58 and the third connection line 59.

  Next, the operation (usage method) of the earphone microphone 51 will be described. To make a normal call through the communication device, the first earphone 52 is attached to one ear and the second earphone 53 is attached to the other ear as shown in FIG. At this time, the sound insulation wall 25 of the ear pad 61 attached to the insertion part 14 of both earphones is inserted to a position where it is gradually fitted to the side opposite to the insertion, and the attachment becomes extremely stable. The sealing is as described above.

  At the same time, the plug 56 is connected to the jack of the communication device. Then, the telephone conversation is performed in a state where the changeover switch SW1 is turned on, the changeover switch SW2 is switched so that the microphone Mic is turned on, and the second speaker SP2 is turned off. That is, the voice of the other party from the communication device is amplified by the speaker SP1 in the earphone 52 and transmitted to the user. Also, the sound spoken by the user is picked up by the microphone Mic in the earphone 53 as the sound in the ear canal, transmitted to the call device, and transmitted to the other party.

  On the other hand, in order to use it for audio instead of calling, the changeover switch SW2 is switched so that the second speaker SP2 is turned on and the microphone Mic is turned off. As a result, the speakers SP1 and SP2 of both earphones can be operated, and the sound from the audio device is amplified by both speakers and transmitted to the user. Since both speakers SP1 and SP2 have the same structure and the same function, it is possible to hear the sound with the same sound pressure from the left and right ears. It can also be used for TV viewing or music viewing by connecting to a mobile phone such as a 1seg mobile phone, and at this time, it is used in the same manner as described above.

  Although it is possible to talk only by the second earphone 53 having the speaker SP2 and the microphone Mic (for example, Japanese Patent Application No. 2006-19016), when used by a normal hearing person, the speaker SP2 by integrating the speaker SP2 and the microphone Mic. The operable output is physically 70 dB or less, and the output exceeding this is saturated due to the situation that the volume in the ear canal is about 2 cc, and oscillation and echo become uncontrollable. On the other hand, 80 dB is the limit for further output in order to prevent hearing loss. On the other hand, there is a problem that the speaker output when used by a sound-sensitive hearing person cannot be heard unless there is an output of about 70 dB to 110 dB. Therefore, by separating the speaker and the microphone into the left and right ears, even if the output is about 70 dB or more to 110 dB, the speaker is not input to the microphone because the microphone is on the opposite side, and oscillation and echo are To prevent.

  The first and second embodiments described above are merely preferred examples, and other embodiments are not excluded. Further, the arrangement of the speaker and the microphone in the internal structure of the earphone is arbitrary, and may be an arrangement other than that shown in the figure. Moreover, although the plug is shown as an example of the connection part that constitutes the connection means with the communication device or the like, any member other than the plug may be used as long as it is a connectable member. In the first and second embodiments, the switch box is provided at an intermediate position of the length of the connection line, and the earphone is positioned so that the switch box is located just in front of the user's chest when the earphone is attached to the ear hole. The length from the switch box to the switch box is adjusted, and the connection line is separated for the length, and the other connection line part from the switch box to the plug is joined without being separated. In addition, the connecting line portion from the switch box to the plug may be separated. In addition, the detailed design, such as the switch box being configured to be slidable with respect to the connection line, can be arbitrarily changed or modified upon implementation.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole schematic diagram which shows the earphone microphone of Embodiment 1 of this invention. It is drawing which shows the usage example of an earphone microphone same as the above. It is drawing which shows a circuit block diagram same as the above. It is an expanded sectional view showing details of the 1st earphone same as the above. It is an expanded sectional view showing details of the 2nd earphone same as the above. It is sectional drawing which follows the VI-VI line of FIG. FIG. 3 is an overall schematic diagram showing an earphone microphone according to a second embodiment. It is drawing which shows the usage example of an earphone microphone same as the above. It is drawing which shows a circuit block diagram same as the above. It is an expanded sectional view showing details of the 2nd earphone same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,51 Earphone microphone 2,52 1st earphone 3,53 2nd earphone 5,55 Connection means 6,56 Plug (connection part)
7, 57 First connection line 8, 58 Second connection line 59 Third connection line 9, 60 Switch box 11, 61 Ear pad 13 Opening 14 Insertion section 15 Body SP Speaker SP1 First speaker SP2 Second speaker Mic microphone SW selector switch SW1 first selector switch SW2 second selector switch

Claims (6)

  A first earphone having a speaker and attached to one ear, a second earphone having a microphone and attached to the other ear, a changeover switch for switching on and off the microphone, these changeover switches, a speaker, And a connection means for connecting the microphone to a communication device such as a mobile phone. The microphone of the second earphone is a microphone that picks up and captures audio in the ear canal, and the first earphone and the second earphone are connected to the ear. An earphone microphone having an ear pad that seals the ear canal when worn.   The connection means includes a connection portion such as a plug connected to the communication device, a first connection line connecting the connection portion and the speaker of the first earphone, and a first connection line connecting the connection portion and the microphone of the second earphone. The earphone microphone according to claim 1, further comprising a changeover switch provided on the second connection line.   The changeover switch is arranged in a switch box provided so that both connection lines are bundled at the positions of the first connection line and the second connection line on the side of the first and second earphones having a predetermined length from the connection part. The earphone microphone according to claim 2.   A first earphone that has a first speaker and is attached to one ear, a second earphone that has a second speaker and a microphone and is attached to the other ear, and a first earphone that switches on and off the microphone. And a second changeover switch for turning on and off the second speaker, and the first and second changeover switches, the first and second speakers, and the microphone are connected to a communication device such as a mobile phone or a portable audio player. The second earphone microphone is a microphone that picks up and captures audio in the ear canal, and the first earphone and the second earphone seal the ear canal when worn on the ear. An earphone microphone characterized by having an ear pad to perform.   The connection means includes a connection portion such as a plug connected to a communication device or an audio device, a first connection line connecting the connection portion and the first speaker of the first earphone, the connection portion and the second earphone. A second connection line for connecting the microphone, and a third connection line for connecting the connection portion and the second speaker of the second earphone, and the first changeover switch is provided on the second connection line. The earphone microphone according to claim 4, wherein the second changeover switch is provided on the second connection line and the third connection line.   The first changeover switch and the second changeover switch are located at positions of the first connection line, the second connection line, and the third connection line on the side of the first and second earphones having a predetermined length from the connection portion. The earphone microphone according to claim 5, wherein the earphone microphone is arranged in a switch box provided so as to bundle the connection wires.

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