WO2018225354A1 - Acoustic device - Google Patents

Acoustic device Download PDF

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Publication number
WO2018225354A1
WO2018225354A1 PCT/JP2018/013516 JP2018013516W WO2018225354A1 WO 2018225354 A1 WO2018225354 A1 WO 2018225354A1 JP 2018013516 W JP2018013516 W JP 2018013516W WO 2018225354 A1 WO2018225354 A1 WO 2018225354A1
Authority
WO
WIPO (PCT)
Prior art keywords
ear
acoustic
unit
acoustic device
skin contact
Prior art date
Application number
PCT/JP2018/013516
Other languages
French (fr)
Japanese (ja)
Inventor
潤 勝沼
大介 佐川
Original Assignee
株式会社発明屋
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社発明屋 filed Critical 株式会社発明屋
Priority to JP2018519878A priority Critical patent/JP6454934B1/en
Publication of WO2018225354A1 publication Critical patent/WO2018225354A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones

Definitions

  • the present disclosure relates to an acoustic device that is used by being worn on an ear.
  • Earphones have been commercialized as acoustic devices that are worn on the ear. Earphones are roughly classified into inner-ear earphones (also called intra-concha earphones, open-air earphones, etc.) and canal-type (earplug type) earphones.
  • inner-ear earphones also called intra-concha earphones, open-air earphones, etc.
  • canal-type earplug type
  • the inner-ear earphone 91 is configured by fitting a housing 912 containing an electroacoustic transducer 911 into a hollow portion (concha conchaumum) 83 surrounded by a tragus 81 and an antitragus 82. use.
  • the canal-type earphone 95 includes a housing 952 including an electroacoustic transducer 951, a sound conduit 953 protruding from the housing 952, and an earpiece 954 attached around the sound conduit 953. ing.
  • the canal-type earphone 95 is used by inserting an earpiece 954 into the ear canal 84.
  • the housing 952 is fitted into the concha cavity 83.
  • Earphones with a structure in which the hard housing comes into contact with the ears tend to hurt the part in contact with the housing when used for a long time. This problem is common to both the inner ear type earphone 91 and the canal type earphone 95. Since the canal type earphone 95 seals the external auditory canal 84 with the earpiece 954, the wearing feeling is not good.
  • the acoustic device is an acoustic device that is used by being worn on an ear.
  • the acoustic device includes a pair of spherical ear attachments that are respectively attached to the left and right ears, and a string-like body that connects the both ear attachments to each other.
  • the string-like body extends from the surface of the ear mounting body.
  • the ear wearing body includes an acoustic unit, a skin contact member, and an interposition member.
  • the sound unit has a sound emitting part and a side part covered with the skin contact member.
  • the skin contact member is a member having flexibility, elasticity, and air permeability and transmitting sound.
  • the interposed member exists between the skin contact member and the acoustic unit, and forms an air chamber between the skin contact member and the acoustic unit.
  • the acoustic unit is supported away from the inner wall of the ear canal.
  • Front view of the acoustic device of the first embodiment Sectional drawing of the ear
  • Front view of acoustic device of third embodiment The figure which shows the state which attached the earbud earphone to the ear The figure which shows the state which put on the ear the canal type earphone
  • FIG. 1 to FIG. 4 show an embodiment of an earphone included in the category of an acoustic device that is worn on the ear 84 and used.
  • the earphone 1 ⁇ / b> A of the first embodiment is a string that connects a pair of spherical ear mounting bodies 10 ⁇ / b> A and 10 ⁇ / b> B that are respectively mounted on the left and right ears 84, and the both ear mounting bodies 10 ⁇ / b> A and 10 ⁇ / b> B.
  • spherical means a spherical shape in a natural state.
  • Spherical shape means a substantially spherical shape.
  • the substantially spherical shape includes a shape in which most of the surface is a spherical surface and the remaining part is an aspherical surface or a spherical surface having a curvature different from that of the most spherical surface.
  • Spherical surface means to include a spherical surface having minute holes and irregularities caused by the material.
  • Natural state means a state in which no external pressure is applied (for example, an unused state, a non-wearing state, etc.) or a state in which sufficient time has passed since the external pressure was released.
  • the string-like body 20 extends from the spherical surface S of the binaural mounting bodies 10A and 10B.
  • “extending from a spherical surface” means extending directly from the spherical surface, in other words, extending without an obvious protrusion.
  • Examples of obvious protrusions include sleeves, casing protrusions, and the like.
  • the string-like body 20 is a cord having a conductive wire 201 (see FIG. 2).
  • a controller 30 is provided at an intermediate portion of the string-like body 20.
  • the controller 30 includes a battery 31 and a wireless module 32.
  • the controller 30 is a flat, substantially rectangular parallelepiped member.
  • the controller 30 arranges the central portion of the string-like body 20 in the longitudinal direction behind the base of the user's neck, and attaches both ear mounting bodies 10A and 10B to the right and left ears 84 (see FIG. 4) of the user. In this state, it is provided at a position offset from the longitudinal center of the string-like body 20 so that it can be placed on one shoulder of the user. That is, in this example, the string-like body 20 includes a short portion 20A that connects one ear mounting body 10A and the housing body 30, and a long portion 20B that connects the other ear mounting body 10B and the housing body 30. Become.
  • the configuration of the binaural mounting bodies 10A and 10B is common to each other.
  • the ear wearing body 10 will be described without distinguishing the both ear wearing bodies 10A and 10B.
  • the ear wearing body 10 includes an acoustic unit 11, a cap 12 as a skin contact member, and a baffle tube 13 as an interposition member.
  • the acoustic unit 11 includes a unit casing 111 as a second enclosure and a driver unit 112.
  • the unit casing 111 is an integrally formed product formed by drawing an aluminum plate.
  • the unit casing 111 has a front part 111f and a rear part 111r.
  • the front part 111f has a hemispherical shell structure opened forward (in the direction of insertion into the external auditory canal 84).
  • the rear portion 111r has a hemispherical shell structure that opens rearward (opposite to the direction of insertion into the ear canal 84).
  • the front part 111f and the rear part 111r are coaxially connected via an intermediate part (constricted part) 111m.
  • the outer diameter of the front part 111f is larger than the outer diameter of the rear part 111r.
  • a protector 113 is attached to the front end (illustration left end) 111a of the front portion 111f.
  • the protector 113 is a hemispherical shell member that is substantially symmetrical with the front portion 111f.
  • the protector 113 and the front part 111f are combined to form a spherical shell.
  • the protector 113 is a mesh-shaped metal member.
  • the protector 113 transmits sound satisfactorily.
  • the protector 113 forms the sound emitting unit 11 a of the acoustic unit 11.
  • a fitting portion 111b into which the driver unit 112 is fitted is provided on the inner periphery on the front end side of the front portion 111f.
  • the driver unit 112 includes an electroacoustic conversion element 1121 and a driver casing 1122 as a first enclosure.
  • a diaphragm 1121a is provided at the tip (left end in the figure) of the electroacoustic transducer 1121.
  • An electromechanical coupling system 1121b that converts an input electric signal into vibration of the diaphragm 1121a is provided behind the diaphragm 1121a (right side in the drawing).
  • the electromechanical coupling system 1121b includes a voice coil, a magnet, and the like.
  • the vibration of the diaphragm 1121a is released as air vibration, that is, sound.
  • the diaphragm 1121a forms a sound emitting part of the driver unit 112.
  • the electroacoustic transducer 1121 is housed in the driver casing 1122.
  • the driver casing 1122 includes a cylindrical portion 1122a and an end plate portion 1122b.
  • the cylindrical portion 1122a surrounds the electroacoustic transducer 1121.
  • the diaphragm 1121a of the electroacoustic transducer 1121 is exposed from the front end (the left end in the drawing) of the cylindrical portion 1122a.
  • the drive shaft of the electromechanical coupling system 1121b is arranged coaxially with the central axis of the cylindrical portion 1122a.
  • the rear end of the cylindrical portion 1122a is closed with an end plate portion 1122b.
  • the end plate portion 1122b is provided with a through hole (not shown) into which a pair of terminals (not shown) of the electroacoustic transducer 1121 is inserted.
  • a pair of terminals (not shown) of the electroacoustic transducer 1121 penetrates through holes (not shown). Accordingly, a pair of terminals (not shown) of the electroacoustic transducer 1121 are arranged at the base end (right end in the drawing) of the driver casing 1122.
  • One end of the conducting wire 201 of the string-like body 20 is connected to the tip of the terminal (not shown) by soldering 202.
  • the driver casing 1122 forms the first resonance chamber 41 together with the diaphragm 1121a of the electroacoustic transducer 1121.
  • the end plate portion 1122b is provided with a port (vent hole) 1122c.
  • the port 1122c opens to the inner surface and the outer surface of the end plate portion 1122b.
  • the driver casing 1122 is stably held in the front portion 111f by fitting the cylindrical portion 1122a to the fitting portion 111b of the front portion 111f.
  • the cylindrical portion 1122a of the driver casing 1122 and the peripheral edge portion of the rear end are in contact with the inner wall of the front portion 111f over the entire circumference.
  • the second resonance chamber 42 is formed between the front portion 111f and the end plate portion 1122b.
  • the second resonance chamber 42 communicates with the first resonance chamber 41 via the port 1122c.
  • a circular lid 114 is attached to the rear end (right end in the figure) 111c of the rear portion 111r.
  • the outer surface Sc of the lid 114 forms a part of the spherical surface S of the ear wearing body 10.
  • the outer surface Sc of the lid 114 is a partial spherical surface having the same curvature as the surface Sa of the cap 12 in the natural state.
  • the lid 114 and the rear portion 111r are firmly and airtightly fixed to each other.
  • the lid 114 is made of metal or plastic.
  • a through hole 114 a is provided at the center of the lid 114.
  • the end of the string-like body 20 is inserted into the through hole 114a.
  • the lid 114 and the string-like body 20 are firmly and airtightly fixed to each other.
  • the internal space of the rear part 111r forms a third resonance chamber 43.
  • the third resonance chamber 43 communicates with the second resonance chamber 42 via the internal space 44 of the intermediate portion 111m. That is, the communication portion (internal space 44) between the second resonance chamber 42 and the third resonance chamber 43 is constricted.
  • the cap 12 is a substantially spherical member.
  • the outer surface Sa of the cap 12 occupies most of the surface S of the ear mounting body 10, and the cap 12 is formed of a sponge material.
  • the sponge material used for the cap 12 has an open cell structure with high air permeability.
  • a typical example is a highly foamed and highly breathable urethane foam.
  • the cap 12 has flexibility, elasticity, and breathability.
  • the cap 12 is a member that transmits sound.
  • the cap 12 can function as an analog filter that removes annoying high-frequency sound.
  • the cap 12 covers the acoustic unit 11 to which the baffle tube 13 and the protector 113 are attached.
  • a substantially spherical shape is formed except for the central portion of the lid 114.
  • the sound emitting part 11 a and the side part 11 s of the acoustic unit 11 are covered with a cap 12.
  • the cap 12 supports the acoustic unit 11 away from the inner wall 86 of the ear canal 84 (see FIG. 4).
  • the baffle tube 13 exists between the acoustic unit 11 and the cap 12.
  • the baffle tube 13 is mounted (exterior) on the acoustic unit 11.
  • the baffle tube 13 forms an air chamber 50 between the acoustic unit 11 and the baffle tube 13.
  • the baffle tube 13 is a flexible annular member that is in contact with the outer peripheral surface 11b of the acoustic unit 11 (in this example, the outer peripheral surfaces of the rear portion 111r and the intermediate portion 111m) over the entire periphery.
  • the air chamber 50 is defined by the outer peripheral surface 11 b of the acoustic unit 11 (in this example, the outer peripheral surface of the front portion 111 f) and the inner peripheral surface 13 d of the baffle tube 13.
  • the baffle tube 13 extends from the outermost diameter portion of the rear portion 111r to the intermediate portion of the protector 113.
  • the outer surface Sb of the end portion 13 b on the rear portion 111 r side of the baffle tube 13 is not covered with the cap 12.
  • the outer surface Sb forms a part of the spherical surface S of the ear wearing body 10.
  • the outer surface Sb is a partial spherical surface having the same curvature as the outer surface Sa of the cap 12 in a natural state.
  • the tip part (the left end part in the figure) 13a of the baffle tube 13 is open.
  • An annular narrow gap is formed between the tip 13 a of the baffle tube 13 and the protector 113.
  • the air chamber 50 communicates with the sound emitting unit 11 a of the acoustic unit 11.
  • the end portion 13b on the rear portion 111r side of the baffle tube 13 is in airtight contact with the rear portion 111r over the entire circumference.
  • An end portion 13b is provided with an annular return portion 13c facing inward.
  • the return portion 13c is in surface contact following the hemispherical shell of the rear portion 111r, so that airtightness between the baffle tube 13 and the rear portion 111r is maintained.
  • the return part 13c reaches the intermediate part 111m.
  • the baffle tube 13 is much softer than the unit casing 111.
  • the baffle tube 13 has the same flexibility as the cap 12.
  • the baffle tube 13 is easily deformed when an external force is applied.
  • the baffle tube 13 is restored to its natural state when no external force is applied.
  • the shape of the baffle tube 13 shown in FIG. 2 is a natural state shape.
  • the baffle tube 13 has elasticity.
  • the baffle tube 13 is made of an elastomer.
  • An example of an elastomer is silicone rubber.
  • a relatively large frictional force acts between the baffle tube 13 made of elastomer and the cap 12 made of sponge material (foamed urethane foam, foamed silicone, etc.). The frictional force makes relative movement between the acoustic unit 11 and the cap 12 difficult. Thereby, the positional displacement of the cap 12 with respect to the acoustic unit 11 and the inadvertent or undesired separation of the cap 12 from the acoustic unit 11 are prevented.
  • the controller 30 has a casing 33.
  • the casing 33 is made of plastic.
  • the battery 31 and the wireless module 32 are accommodated in the casing 33.
  • a sound inlet 33a is opened at the end of the casing 33 on the side where the short portion 20A of the string-like body 20 is connected.
  • the battery 31 supplies power to the wireless module 32.
  • the battery 31 is a primary battery or a secondary battery.
  • the wireless module 32 includes a sound pickup unit 321, a communication unit 322, an operation unit 323, and a control unit 324.
  • the sound pickup unit 321 picks up the sound outside the container 30 through the sound inlet 33a and outputs a sound pickup signal (electric signal).
  • the output sound pickup signal is input to the communication unit 322.
  • the sound pickup unit 321 functions as a transmitter during a call.
  • the communication unit 322 receives a signal wirelessly transmitted from a communication device (audio content providing device such as an audio player or a smartphone) (not shown).
  • a communication device audio content providing device such as an audio player or a smartphone
  • Wi-Fi registered trademark
  • Bluetooth registered trademark
  • other protocols can be used as a communication protocol between the receiving unit and a transmitter (not shown).
  • the communication unit 322 has a right audio output terminal 322R and a left audio output terminal 322L.
  • the communication unit 322 performs processing of amplifying the received signal and generating a right audio drive signal (right audio signal) and a left audio drive signal (left audio signal) from the amplified received signal.
  • the right audio signal is output from the right audio output terminal 322R, and is input to the driver unit 112 of one ear wearing body 10 (for example, the ear wearing body 10A) through the conductive wire 201 of the string-like body 20.
  • the left audio signal is output from the left audio output terminal 322L, and is input to the driver unit 112 of the other ear wearing body 10 (for example, the ear wearing body 10B) through the conductive wire 201 of the string-like body 20.
  • Each driver unit 112 converts the input right audio signal and left audio signal into right audio and left audio, respectively, and outputs the result.
  • the communication unit 321 performs signal processing on the sound pickup signal input from the sound pickup unit 321 and transmits it to a communication device (not shown).
  • the ear wearing body 10 functions as a receiver.
  • the operation unit 323 includes an on / off button 323A, an increase button 323B, and a decrease button 323C.
  • the on / off button 323 ⁇ / b> A, the increase button 323 ⁇ / b> B, and the decrease button 323 ⁇ / b> C are exposed from an opening provided in the casing 32.
  • the on / off button 323 ⁇ / b> A is an operator for turning on / off the supply of electric power from the battery 31.
  • the increase button 323B is an operator for increasing the output of an electrical signal by the communication unit 322.
  • the decrease button 323C is an operator for decreasing the output of an electrical signal by the communication unit 322.
  • the control unit 324 turns on / off the supply of power from the battery 31 or increases / decreases the output of electric signals from the communication unit 322 according to basic operations performed on the operation unit 323.
  • the basic operation is an operation of pressing the on / off button 323A, the increase button 323B, and the decrease button 323C independently for a predetermined time.
  • control unit 324 responds to an incoming call according to an additional operation performed on the operation unit 323, terminates the call state, redials, starts playing a song, switches to the next song, etc. Execute the process.
  • the additional operation includes an operation of pressing the on / off button 323A, the increase button 323B, and the decrease button 323C independently for a predetermined time different from the basic operation.
  • the addition operation includes an operation of continuously pressing the on / off button 323A, the increase button 323B, and the decrease button 323C for a predetermined number of times independently. Note that the control unit 324 immediately executes an incoming call response (call start processing) when any button is operated during an incoming call.
  • the earphone 1 ⁇ / b> A of the first embodiment configured as described above has a baffle tube between the acoustic unit 11 and the inner wall 86 of the ear canal 84 when the cap 12 fits into the ear canal 84. 13 and the cap 12 are interposed. Thereby, the acoustic unit 11 is supported away from the inner wall 86 of the ear canal 84.
  • the acoustic unit 11 is disposed with the sound emitting part 11 a facing the external auditory canal 84.
  • the sound emitting unit 11 a of the acoustic unit 11 is disposed near the entrance 85 in the ear canal 84.
  • the sound emitted from the acoustic unit 11 passes through the cap 12 radially and is emitted into the ear canal 84. Since the sound conduit 953 and the earpiece 954 (see FIG. 8) are not present, the reproduced sound emitted from the acoustic unit 11 near the entrance 85 in the external auditory canal 84 passes through the cap 12 and passes through the skin of the external auditory canal 84 and its surroundings. Transmitted to bone.
  • the sound emitted from the acoustic unit 11 can be recognized as natural sound by making the best use of the ability of the part around the ear canal 84 to feel the sound. .
  • the diaphragm 1121a as the sound emitting portion of the driver unit 112 is disposed near the entrance 85 in the ear canal 84, so that the sound emitted from the driver unit 112 can be efficiently generated. 84. Therefore, although the small (small output) driver unit 112 is used, the reproduced sound can be recognized as natural sound.
  • the earphone 1A of the first embodiment does not use the sound conduit 953 (see FIG. 8), the sound range transmitted from the driver unit 112 to the auditory organ is not limited. Therefore, the performance of the driver unit 112 can be fully exhibited.
  • the earphone 1A having a novel design including the almost perfect spherical ear mounting body 10 formed by combining the cap 12, the baffle tube 13, and the lid 114.
  • the outer surface Sa of the flexible cap 12 occupies most of the spherical surface S of the ear mounting body 10 in the earphone 1A of the first embodiment, it is easy to fit the ear canal 84 of many people. Even if the angle of the acoustic unit 11 with respect to the ear 84 is slightly changed, the cap 12 and the baffle tube 13 are interposed between the inner wall 86 of the external auditory canal 84 and the acoustic unit 11. It is supported away from the inner wall 86.
  • the earphone 1A of the first embodiment has only a cap 12 in contact with the ear 84, and the cap 12 is made of a flexible sponge material. Also, the ear 84 is less painful.
  • the cap 12 fitted to the external auditory canal 84 is made of a sponge material having air permeability, so that the external auditory canal 84 is not hermetically sealed. For this reason, touch noise hardly occurs.
  • the pair of ear attachment bodies 10 respectively attached to the left and right ears 84 have the same shape and the same size, so that the shape is the same for the right ear and the left ear. Compared with the case where a different pair of mounting bodies is provided, the manufacturing cost can be reduced.
  • the earphone 1A of the first embodiment includes the baffle tube 13 between the acoustic unit 11 and the cap 12, the mid-bass reproducibility is good even though the ear canal 84 is not hermetically sealed. This is because sound leakage outside the ear canal 84 is suppressed. Further, since the internal space of the baffle tube 13 forms the air chamber 50, the mid-low sound reproducibility is further improved.
  • the baffle tube 13 can function as an acoustic amplifier (passive amplifier) in the mid-low range by causing the air in the air chamber 50 to resonate with the sound emitted from the acoustic unit 11.
  • the baffle tube 13 functions as a “baffle” that efficiently reflects the sound into the ear canal 84.
  • the earphone 1A of the first embodiment has a narrow annular gap formed between the tip portion 13a of the baffle tube 13 and the protector 113, so that the sound is emitted from the sound emitting portion 11a and is behind the acoustic unit 11. Sound that wraps around (outside the ear canal 84) is easily transmitted into the air chamber 50. And since the end portion 13b on the rear portion 111r side of the baffle tube 13 is in airtight contact with the rear portion 111r over the entire circumference, the sound transmitted into the air chamber 50 is behind the air chamber 50 (the ear canal 84). It becomes difficult to communicate to the outside. Thereby, sound leakage to the outside of the external auditory canal 84 is more effectively suppressed, and the mid / low frequency reproducibility becomes better.
  • the flexible baffle tube 13 existing between the acoustic unit 11 and the cap 12 also serves as a cushion in the earphone 1A of the first embodiment, the synergistic action of the cap 12 and the baffle tube 13 enables The earphone can realize a very good wearing feeling that cannot be experienced.
  • the earphone 1A of the first embodiment includes a first resonance chamber 41, a second resonance chamber 42, and a third resonance chamber 43, and the first resonance chamber 41 and the second resonance chamber 42 are narrow passages (port 1122c). ), The bass is amplified. And since the 2nd resonance chamber 42 and the 3rd resonance chamber 43 are connected by the thin channel
  • the earphone 1A of the first embodiment can recognize the presence of the air chamber 50 from the outside.
  • the earphone 1A having a novel structure including the air chamber 50 is realized.
  • a novel earphone 1A having both high acoustic performance and functional beauty can be realized.
  • the baffle tube 13 is compressed from the outside together with the cap 12 when attached to the ear 80.
  • the earphone 1B of the second embodiment shown in FIG. 5 includes a magnetic body 60 for connecting the pair of ear wearing bodies 10 with each other by magnetic force.
  • the magnetic body 60 is fixed to the back surface of the lid 114 and provided in the third resonance chamber 43. Other configurations are the same as those of the first embodiment.
  • the magnetic body 60 is an annular member.
  • the magnetic body 60 is wrapped around the string-like body 20.
  • the magnetic body 60 provided in one ear mounting body 10 (for example, the ear mounting body 10A) is a permanent magnet.
  • the magnetic body 60 provided in the other ear mounting body 10 (for example, the ear mounting body 10B) is a ferromagnetic body such as a permanent magnet or iron.
  • the permanent magnet includes a ferrite magnet, a neodymium magnet, and the like.
  • the earphone 1B can be kept in an annular shape by connecting the both ear mounting bodies 10 with a magnetic force, so that the earphone 1B can be attached to the user's neck like a necklace. Moreover, the earphone 1B can be stably worn on the wrist of the user by winding the earphone 1B around the wrist of the user and connecting the ear-wearing bodies 10 together with a magnetic force. Other operations and effects are the same as those of the first embodiment.
  • the earphone 1C of the third embodiment shown in FIG. 6 does not include the controller 30 (see FIG. 1).
  • the pair of ear wearing bodies 10 share the function of the controller 30.
  • Other configurations are the same as those in the first embodiment or the second embodiment.
  • an extremely simple and novel earphone 1C including a pair of spherical ear mounting bodies 10 and a string-like body 20 that connects the both ear mounting bodies 10 to each other is realized. Since the earphone 1C of the third embodiment does not have the controller 30 between the pair of ear wearing bodies 10, the earphone 1C is easy to be worn around the user's wrist. Other operations and effects are the same as those in the first embodiment or the first embodiment.
  • the earphone 1 ⁇ / b> A of the first embodiment and the earphone B of the second embodiment are provided with a controller at a position offset from the longitudinal center of the string-like body 20.
  • the controller 30 may be provided in the unit.
  • the cord-like body 20 is always connected to the binaural mounting body 10, but a terminal for re-cable is provided on the binaural mounting body 10 and an arbitrary cord is connected to the terminal.
  • the shape body 20 may be connected.
  • an annular narrow gap is formed between the tip 13a of the baffle tube 13 and the protector 113, but the gap is not an essential component.
  • the absence of the gap or the absence of the gap may be advantageous in improving the mid-bass reproducibility.
  • the baffle tube 13 can function as a higher performance acoustic amplifier due to the structure in which the air in the air chamber 50 having a sealed structure resonates with the sound emitted from the acoustic unit 11.
  • the earphones 1A to 1C of the above embodiment include the first resonance chamber 41, the first resonance chamber 41 is not an essential component.
  • the earphones 1A to 1C of the above embodiment include the second resonance chamber 42, the second resonance chamber 42 is not an essential component.
  • the earphones 1A to 1C of the above embodiment include the third resonance chamber 43 and the internal space 44, the third resonance chamber 43 and the internal space 44 are not essential components.
  • the earphones 1A to 1C of the above-described embodiment include the driver casing 1122 as the first enclosure, the driver casing 1122 is not an essential component. That is, the acoustic unit 11 may constitute the driver unit 112 itself.
  • an acoustic vibration absorbing layer may be provided in the space on the string-like body 20 side of the air chamber 50 (the space on the right side in the drawing).
  • the acoustic vibration absorbing layer By providing the acoustic vibration absorbing layer in the air chamber 50, it is possible to enhance the performance of preventing sound leakage to the outside of the ear canal 84 by the baffle tube 13.
  • ⁇ GEL registered trademark
  • ⁇ GEL registered trademark
  • ⁇ GEL is a soft gel-like material mainly composed of silicone.
  • a member made of a sponge material is used as the cap 12, but the cap 12 is not limited to a member made of a sponge material as long as it has elasticity, flexibility, and air permeability.
  • the mounting mode in which the diaphragm 1121a is disposed near the entrance 85 in the ear canal 84 is illustrated, but other mounting modes are possible.
  • the mounting mode of the acoustic device according to the present invention includes a mounting mode in which the diaphragm 1121a is disposed just at the entrance 85 of the ear canal 84.
  • the mounting mode of the acoustic device according to the present invention includes a mounting mode in which the diaphragm 1121a is disposed near the entrance 85 outside the ear canal 84.
  • the diaphragm 1121a is exemplified as the sound emitting part of the driver unit 112, but the sound emitting part is not limited to the diaphragm 1121a.
  • the sound emission part of the driver unit 112 may be an outlet (window) of sound emitted from a vibrating body that is a sound generation source. That is, the driver unit 112 is not limited to a dynamic type, and may be a balanced armature type.
  • the driver unit 112 may include a plurality of electroacoustic transducers 1121 having different acoustic characteristics, such as for a low frequency band, a mid frequency band, and a high frequency band.
  • the controller 30 includes the battery 31, but a battery casing that houses the battery 31 may be provided in an intermediate portion of the string-like body 20 separately from the controller 30.
  • baffle tube 13 tubular member
  • baffle tube 13 torus-like flexible hollow member which surrounds the acoustic unit 11. Also good.
  • the baffle torus is stably held by the acoustic unit 11 by being attached to the constricted portion between the front member 111f and the rear member 111r of the unit casing 111.
  • the interposition member is referred to as a “baffle tube”, but may be referred to as an “air tube” in the sense of having an air chamber 50.
  • “baffle torus” may be referred to as “air torus”.
  • the interposition member may be referred to as “air cushion” or “cushion tube” in the sense that it acts as a cushion.
  • the example of the earphone is shown as an example of the embodiment of the acoustic device.
  • the acoustic device according to the present invention includes an acoustic device other than the earphone.
  • Examples of acoustic devices other than earphones include devices equipped with a microphone, such as hearing aids and income.
  • a pair of spherical ear attachments (ear attachments 10, 10A, 10B) respectively attached to the left and right ears (ears 84);
  • a string-like body (string-like body 20) for connecting both ear wearing bodies to each other;
  • the string-like body extends from the spherical surface (surface S) of the ear wearing body,
  • the ear wearing body is: An acoustic unit (acoustic unit 11), a skin contact member (cap 12), and an interposition member (baffle tube 13);
  • the acoustic unit has at least a sound emitting part (sound emitting part 11a) and a side part (side part 11s) covered with the skin contact member,
  • the skin contact member is a member having flexibility, elasticity and breathability, and transmitting sound,
  • the interposition member exists between the skin contact member and the acoustic unit, and forms an air chamber (air chamber 50) between the skin contact member and the acoustic unit,
  • the skin contact member is a member having flexibility, elasticity, and air permeability
  • the feeling of wearing on the ear is good, and it is difficult to cause pain in the ear even when worn for a long time.
  • the acoustic device of (1) is easily fitted to the ear canal of many people because the portion that fits into the ear canal is a spherical ear mounting body. Since the acoustic chamber of (1) has an air chamber between the skin contact member and the acoustic unit, the mid-low sound reproducibility is good.
  • the pair of spherical ear mounting bodies are acoustic devices having the same shape and the same size.
  • the pair of ear mounting bodies respectively mounted on the left and right ears have the same shape and the same size, a pair of ear mountings different in shape for the right ear and the left ear The manufacturing cost can be reduced as compared with the case where the body is provided.
  • the skin contact member is a member made of a sponge material.
  • the acoustic device of (3) is only a member made of sponge material in contact with the ear, the feeling of wearing on the ear is good, and even when worn for a long time, the ear is less painful.
  • the outer surface (outer surface Sa) of the skin contact member occupies most of the surface of the ear wearing body.
  • the outer surface of the skin contact member which is a member having flexibility, elasticity, and air permeability, occupies most of the surface of the ear wearing body, the feeling of wearing on the ear is good.
  • the interposition member is an acoustic device that is a flexible member that is wrapped around the acoustic unit.
  • the sound device has good mid-low sound reproducibility because sound leakage is suppressed by interposing the interposing member forming the air chamber around the sound unit.
  • the air chamber is an acoustic device that communicates with the sound emitting unit of the acoustic unit.
  • the acoustic device communicates with the sound emitting unit of the acoustic unit, the sound emitted from the sound emitting unit and circulated behind the acoustic unit is easily transmitted to the air chamber.
  • the mid-bass reproducibility may be improved by the resonance of the air in the sealed air chamber with the sound emitted from the acoustic unit.
  • the sound device further suppresses sound leakage.
  • the string-like body is a cord having a conductive wire.
  • a pair of spherical ear attachments respectively attached to the left and right ears are connected to each other with a cord having a conductive wire.
  • the acoustic device can be operated by a controller provided in the middle part of the string-like body.
  • the controller is The cord can be placed on one shoulder of the user in a state where the center portion in the longitudinal direction of the cord is arranged behind the base of the user's neck and the pair of ear wearing bodies are respectively attached to the left and right ears of the user.
  • the acoustic device is provided at a position offset from the longitudinal center of the cord.
  • the weight of the controller can be received by one shoulder of the user.
  • the pair of ear mounted bodies is an acoustic device including a magnetic body (magnetic body 60) for connecting both ear mounted bodies with magnetic force.
  • the weight of the controller equipped with the battery can be received by one shoulder of the user.
  • the acoustic device according to any one of (1) to (13), A first enclosure (driver casing 1122) that houses the electroacoustic transducer; A second enclosure (unit casing 111) for housing the first enclosure; The first enclosure forms a first resonance chamber (first resonance chamber 41) with the electroacoustic transducer, The second enclosure forms a second resonance chamber (second resonance chamber 42) with the first enclosure, The acoustic device, wherein the first enclosure is provided with a port (port 1122c) that allows the first resonance chamber and the second resonance chamber to communicate with each other.
  • the sound device of (14) Since the low sound is amplified by the first resonance chamber and the second resonance chamber, the sound device of (14) has better mid-low sound reproducibility.
  • the bass is further amplified by the change in the viscosity of the air in the communication portion between the second resonance chamber and the third resonance chamber, so that the mid-bass reproducibility is further improved.
  • Earphone Sound device 10A, 10B Ear mounting body 10 Ear mounting body 11 Acoustic unit 11a Sound emitting part 11b Outer peripheral surface 111 Unit casing (second enclosure) 111b Fitting portion 111c Rear end 111f Front portion 111m Intermediate portion 111r Rear portion 112 Driver unit 1121 Electroacoustic transducer 1121a Diaphragm 1121b Electromechanical coupling system 1122 Driver casing (first enclosure) 1122a Cylindrical portion 1122b End plate portion 1122c Port 113 Protector 114 Lid 114a Through-hole 12 Cap (skin contact member) 13 Baffle tube (intervening member) 13a Front end portion 13b End portion 13c Return portion 13d Inner peripheral surface 20 String-like body 20A Short portion 20B Long portion 201 Conductor 202 Solder 30 Controller 31 Battery 32 Wireless module 321 Sound pickup portion 322 Communication portion 323 Operation portion 324 Control portion 323A ON / OFF button 323B Increase button 323C Decrease button 33

Abstract

The present invention provides an acoustic device that has a good feel when worn in ears. This acoustic device comprises: a pair of spherical ear-worn bodies that are respectively worn in right and left ears; and a string-shaped body that connects both the ear-worn bodies. The string-shaped body extends directly from the spherical surface of the ear-worn body. The ear-worn body comprises an acoustic unit, a skin contact member, and an interposition member. At least a sound emission part and a side part of the acoustic unit are covered with the skin contact member. The skin contact member has flexibility, elasticity and air permeability, and transmits sound. The interposition member is present between the skin contact member and the acoustic unit, and forms an air chamber between the skin contact member and the acoustic unit. By the skin contact member being fitted in an external auditory canal, the acoustic unit is supported away from the inner wall of the external auditory canal.

Description

音響装置Sound equipment
　本開示は、耳に装着して使用する音響装置に関する。 The present disclosure relates to an acoustic device that is used by being worn on an ear.
　耳に装着して使用する音響装置として、イヤホンが多数商品化されている。
　イヤホンは、インナーイヤー型イヤホン（イントラコンカ型イヤホン、オープンエア型イヤホン、等とも称される）とカナル型（耳栓型）イヤホンとに大別される。 Many earphones have been commercialized as acoustic devices that are worn on the ear.
Earphones are roughly classified into inner-ear earphones (also called intra-concha earphones, open-air earphones, etc.) and canal-type (earplug type) earphones.
　図７に示すように、インナーイヤー型イヤホン９１は、電気音響変換素子９１１を内蔵したハウジング９１２を、耳珠８１と対耳珠８２とに囲まれた窪み部分（耳甲介腔）８３に嵌めて使用する。 As shown in FIG. 7, the inner-ear earphone 91 is configured by fitting a housing 912 containing an electroacoustic transducer 911 into a hollow portion (concha conchaumum) 83 surrounded by a tragus 81 and an antitragus 82. use.
　図８に示すように、カナル型イヤホン９５は、電気音響変換素子９５１を内蔵したハウジング９５２と、ハウジング９５２から突出した音導管９５３と、音導管９５３の周りに装着されたイヤピース９５４と、を備えている。カナル型イヤホン９５は、イヤピース９５４を外耳道８４に挿入して使用する。また、多くのカナル型イヤホン３００は、耳甲介腔８３にハウジング９５２が嵌まる。 As shown in FIG. 8, the canal-type earphone 95 includes a housing 952 including an electroacoustic transducer 951, a sound conduit 953 protruding from the housing 952, and an earpiece 954 attached around the sound conduit 953. ing. The canal-type earphone 95 is used by inserting an earpiece 954 into the ear canal 84. In many canal-type earphones 300, the housing 952 is fitted into the concha cavity 83.
　硬いハウジングが耳に接触する構造のイヤホンは、長時間使用すると、ハウジングと接触している箇所が痛くなり易い。この問題は、インナーイヤー型イヤホン９１とカナル型イヤホン９５のどちらにも共通する問題である。カナル型イヤホン９５は、イヤピース９５４で外耳道８４を密閉するため、装着感が良くない。 Earphones with a structure in which the hard housing comes into contact with the ears tend to hurt the part in contact with the housing when used for a long time. This problem is common to both the inner ear type earphone 91 and the canal type earphone 95. Since the canal type earphone 95 seals the external auditory canal 84 with the earpiece 954, the wearing feeling is not good.
　一実施形態の音響装置は、耳に装着して使用する音響装置である。
　前記音響装置は、左右の耳にそれぞれ装着される一対の球形の耳装着体と、両耳装着体を互いに連結する紐状体と、を有する。
　前記紐状体は、前記耳装着体の表面から延びている。
　前記耳装着体は、音響ユニットと、皮膚接触部材と、介在部材と、を有する。
　前記音響ユニットは、その放音部及び側部が前記皮膚接触部材で覆われている。
　前記皮膚接触部材は、柔軟性、弾力性及び通気性を有し、且つ、音を透過させる部材である。
　前記介在部材は、前記皮膚接触部材と前記音響ユニットとの間に存在して、前記皮膚接触部材と前記音響ユニットとの間に空気室を形成する。
　前記皮膚接触部材が外耳道に嵌まることにより、前記音響ユニットが当該外耳道の内壁から離して支持される。 The acoustic device according to an embodiment is an acoustic device that is used by being worn on an ear.
The acoustic device includes a pair of spherical ear attachments that are respectively attached to the left and right ears, and a string-like body that connects the both ear attachments to each other.
The string-like body extends from the surface of the ear mounting body.
The ear wearing body includes an acoustic unit, a skin contact member, and an interposition member.
The sound unit has a sound emitting part and a side part covered with the skin contact member.
The skin contact member is a member having flexibility, elasticity, and air permeability and transmitting sound.
The interposed member exists between the skin contact member and the acoustic unit, and forms an air chamber between the skin contact member and the acoustic unit.
When the skin contact member fits into the ear canal, the acoustic unit is supported away from the inner wall of the ear canal.
第１実施形態の音響装置の正面図Front view of the acoustic device of the first embodiment 図１に示す音響装置が備える耳装着体の断面図Sectional drawing of the ear | attachment body with which the acoustic apparatus shown in FIG. 図１に示す音響装置が備える無線モジュールの機能ブロック図Functional block diagram of a wireless module included in the acoustic device shown in FIG. 図１に示す音響装置の装着態様を例示する断面図Sectional drawing which illustrates the mounting | wearing aspect of the audio equipment shown in FIG. 第２実施形態の音響装置が備える耳装着体の断面図Sectional drawing of the ear | attachment body with which the audio equipment of 2nd Embodiment is provided. 第３実施形態の音響装置の正面図Front view of acoustic device of third embodiment インナーイヤー型イヤホンを耳に装着した状態を示す図The figure which shows the state which attached the earbud earphone to the ear カナル型イヤホンを耳に装着した状態を示す図The figure which shows the state which put on the ear the canal type earphone
［第１実施形態］
　図１乃至図４には、耳８４に装着して使用する音響装置の範疇に含まれるイヤホンの一実施形態が示されている。
(イヤホン)
　図１に示すように、第１実施形態のイヤホン１Ａは、左右の耳８４にそれぞれ装着される一対の球形の耳装着体１０Ａ、１０Ｂと、両耳装着体１０Ａ、１０Ｂを互いに連結する紐状体２０と、を有する。本明細書において、「球形」とは、自然状態において球形であることを意味する。「球形」とは、略球形を含む意味である。略球形には、表面の大部分が球面であり、残りの一部分が非球面又は当該大部分の球面とは曲率が異なる球面である形状が含まれる。「球面」は、材質に起因する微少な孔や凹凸を有する球状面を含む意味である。「自然状態」とは、外圧が加わっていない状態（例えば、未使用状態、非装着状態、等）或いは外圧が解かれて十分な時間が経過した状態を意味する。 [First Embodiment]
FIG. 1 to FIG. 4 show an embodiment of an earphone included in the category of an acoustic device that is worn on the ear 84 and used.
(earphone)
As shown in FIG. 1, the earphone 1 </ b> A of the first embodiment is a string that connects a pair of spherical ear mounting bodies 10 </ b> A and 10 </ b> B that are respectively mounted on the left and right ears 84, and the both ear mounting bodies 10 </ b> A and 10 </ b> B. And a body 20. In the present specification, “spherical” means a spherical shape in a natural state. “Spherical shape” means a substantially spherical shape. The substantially spherical shape includes a shape in which most of the surface is a spherical surface and the remaining part is an aspherical surface or a spherical surface having a curvature different from that of the most spherical surface. “Spherical surface” means to include a spherical surface having minute holes and irregularities caused by the material. “Natural state” means a state in which no external pressure is applied (for example, an unused state, a non-wearing state, etc.) or a state in which sufficient time has passed since the external pressure was released.
　紐状体２０は、両耳装着体１０Ａ、１０Ｂの球形の表面Sから延びている。本明細書において、「球形の表面から延びている」とは、球形の表面から直に延びていること、換言すれば、明らかな突起部を介さずに延びていること、を含む意味である。明らかな突起部の例として、スリーブ、ケーシングの突起部、等、を挙げることができる。 The string-like body 20 extends from the spherical surface S of the binaural mounting bodies 10A and 10B. In the present specification, “extending from a spherical surface” means extending directly from the spherical surface, in other words, extending without an obvious protrusion. . Examples of obvious protrusions include sleeves, casing protrusions, and the like.
　紐状体２０は、導線２０１（図２参照）を有するコードである。
　紐状体２０の中間部には、コントローラ３０が設けられている。コントローラ３０は、バッテリ３１と無線モジュール３２とを備える。コントローラ３０は、扁平な略直方体の部材である。 The string-like body 20 is a cord having a conductive wire 201 (see FIG. 2).
A controller 30 is provided at an intermediate portion of the string-like body 20. The controller 30 includes a battery 31 and a wireless module 32. The controller 30 is a flat, substantially rectangular parallelepiped member.
　コントローラ３０は、紐状体２０の長さ方向中心部をユーザの頸部の基部後方に配置して、両耳装着体１０Ａ、１０Ｂを当該ユーザの左右の耳８４（図４参照）にそれぞれ装着した状態において、当該ユーザの一方の肩に載せ得るように、紐状体２０の長さ方向中心から片寄った位置に設けられている。すなわち、この例では、紐状体２０は、一方の耳装着体１０Ａと収容体３０とを結ぶ短尺部２０Ａと、他方の耳装着体１０Ｂと収容体３０とを結ぶ長尺部２０Ｂと、からなる。 The controller 30 arranges the central portion of the string-like body 20 in the longitudinal direction behind the base of the user's neck, and attaches both ear mounting bodies 10A and 10B to the right and left ears 84 (see FIG. 4) of the user. In this state, it is provided at a position offset from the longitudinal center of the string-like body 20 so that it can be placed on one shoulder of the user. That is, in this example, the string-like body 20 includes a short portion 20A that connects one ear mounting body 10A and the housing body 30, and a long portion 20B that connects the other ear mounting body 10B and the housing body 30. Become.
　両耳装着体１０Ａ、１０Ｂの構成は互いに共通している。以下、両耳装着体１０Ａ、１０Ｂを区別せず、耳装着体１０として説明する。 The configuration of the binaural mounting bodies 10A and 10B is common to each other. Hereinafter, the ear wearing body 10 will be described without distinguishing the both ear wearing bodies 10A and 10B.
（耳装着体）
　図２に示すように、耳装着体１０は、音響ユニット１１と、皮膚接触部材としてのキャップ１２と、介在部材としてのバッフルチューブ１３と、を有する。 (Ear wearing body)
As shown in FIG. 2, the ear wearing body 10 includes an acoustic unit 11, a cap 12 as a skin contact member, and a baffle tube 13 as an interposition member.
（音響ユニット）
　音響ユニット１１は、第２エンクロージャとしてのユニットケーシング１１１と、ドライバユニット１１２と、を有する。 (Acoustic unit)
The acoustic unit 11 includes a unit casing 111 as a second enclosure and a driver unit 112.
　ユニットケーシング１１１は、アルミ板を絞り加工してなる一体成形品である。ユニットケーシング１１１は、フロント部１１１ｆと、リア部１１１ｒと、を有する。 The unit casing 111 is an integrally formed product formed by drawing an aluminum plate. The unit casing 111 has a front part 111f and a rear part 111r.
　フロント部１１１ｆは、前方（外耳道８４へ挿入する向き）に開いた半球殻構造になっている。リア部１１１ｒは、後方（外耳道８４へ挿入する向きとは逆向き）に開いた半球殻構造になっている。フロント部１１１ｆとリア部１１１ｒとは、中間部（括れ部）１１１ｍを介して同軸状に接続されている。フロント部１１１ｆの外径は、リア部１１１ｒの外径よりも大きい。 The front part 111f has a hemispherical shell structure opened forward (in the direction of insertion into the external auditory canal 84). The rear portion 111r has a hemispherical shell structure that opens rearward (opposite to the direction of insertion into the ear canal 84). The front part 111f and the rear part 111r are coaxially connected via an intermediate part (constricted part) 111m. The outer diameter of the front part 111f is larger than the outer diameter of the rear part 111r.
　フロント部１１１ｆの先端（図示左端）１１１ａには、プロテクタ１１３が取り付けられている。プロテクタ１１３は、フロント部１１１ｆと略対称の半球殻状の部材である。プロテクタ１１３とフロント部１１１ｆとが組み合わされて球殻を成している。プロテクタ１１３は、メッシュ状の金属製の部材である。プロテクタ１１３は、音声を良好に透過させる。プロテクタ１１３は、音響ユニット１１の放音部１１ａをなす。 A protector 113 is attached to the front end (illustration left end) 111a of the front portion 111f. The protector 113 is a hemispherical shell member that is substantially symmetrical with the front portion 111f. The protector 113 and the front part 111f are combined to form a spherical shell. The protector 113 is a mesh-shaped metal member. The protector 113 transmits sound satisfactorily. The protector 113 forms the sound emitting unit 11 a of the acoustic unit 11.
　フロント部１１１ｆの先端側内周には、ドライバユニット１１２が嵌合する嵌合部１１１ｂが設けられている。 A fitting portion 111b into which the driver unit 112 is fitted is provided on the inner periphery on the front end side of the front portion 111f.
　ドライバユニット１１２は、電気音響変換素子１１２１と、第１エンクロージャとしてのドライバケーシング１１２２と、を有する。電気音響変換素子１１２１の先端（図示左端）には、振動板１１２１ａが設けられている。振動板１１２１ａの背後（図示右側）には、入力電気信号を振動板１１２１ａの振動に変換する電気機械結合系１１２１ｂが設けられている。電気機械結合系１１２１ｂは、ボイスコイル、マグネット、等で構成される。振動板１１２１ａの振動が空気振動すなわち音として放出される。振動板１１２１ａは、ドライバユニット１１２の放音部をなす。電気音響変換素子１１２１は、ドライバケーシング１１２２に収容されている。 The driver unit 112 includes an electroacoustic conversion element 1121 and a driver casing 1122 as a first enclosure. A diaphragm 1121a is provided at the tip (left end in the figure) of the electroacoustic transducer 1121. An electromechanical coupling system 1121b that converts an input electric signal into vibration of the diaphragm 1121a is provided behind the diaphragm 1121a (right side in the drawing). The electromechanical coupling system 1121b includes a voice coil, a magnet, and the like. The vibration of the diaphragm 1121a is released as air vibration, that is, sound. The diaphragm 1121a forms a sound emitting part of the driver unit 112. The electroacoustic transducer 1121 is housed in the driver casing 1122.
　ドライバケーシング１１２２は、円筒部１１２２ａと、端板部１１２２ｂ、とからなる。円筒部１１２２ａは、電気音響変換素子１１２１を包囲している。電気音響変換素子１１２１の振動板１１２１ａは、円筒部１１２２ａの前端（図示左端）から露出している。電気機械結合系１１２１ｂの駆動軸は円筒部１１２２ａの中心軸と同軸上に配置されている。円筒部１１２２ａの後端は、端板部１１２２ｂで塞がれている。端板部１１２２ｂには、電気音響変換素子１１２１の一対の端子（図示省略）が挿入される貫通孔（図示省略）が設けられている。電気音響変換素子１１２１の一対の端子（図示省略）は、貫通孔（図示省略）を貫通している。これにより、ドライバケーシング１１２２の基端（図示右端）に、電気音響変換素子１１２１の一対の端子（図示省略）が配置されている。当該端子（図示省略）の先端部に、紐状体２０の導線２０１の一端が半田付け２０２により接続されている。 The driver casing 1122 includes a cylindrical portion 1122a and an end plate portion 1122b. The cylindrical portion 1122a surrounds the electroacoustic transducer 1121. The diaphragm 1121a of the electroacoustic transducer 1121 is exposed from the front end (the left end in the drawing) of the cylindrical portion 1122a. The drive shaft of the electromechanical coupling system 1121b is arranged coaxially with the central axis of the cylindrical portion 1122a. The rear end of the cylindrical portion 1122a is closed with an end plate portion 1122b. The end plate portion 1122b is provided with a through hole (not shown) into which a pair of terminals (not shown) of the electroacoustic transducer 1121 is inserted. A pair of terminals (not shown) of the electroacoustic transducer 1121 penetrates through holes (not shown). Accordingly, a pair of terminals (not shown) of the electroacoustic transducer 1121 are arranged at the base end (right end in the drawing) of the driver casing 1122. One end of the conducting wire 201 of the string-like body 20 is connected to the tip of the terminal (not shown) by soldering 202.
　ドライバケーシング１１２２は、電気音響変換素子１１２１の振動板１１２１ａと共に第１共鳴室４１を形成する。端板部１１２２ｂには、ポート（通気孔）１１２２ｃが設けられている。ポート１１２２ｃは、端板部１１２２ｂの内面及び外面に開口している。 The driver casing 1122 forms the first resonance chamber 41 together with the diaphragm 1121a of the electroacoustic transducer 1121. The end plate portion 1122b is provided with a port (vent hole) 1122c. The port 1122c opens to the inner surface and the outer surface of the end plate portion 1122b.
　ドライバケーシング１１２２は、円筒部１１２２ａがフロント部１１１ｆの嵌合部１１１ｂに嵌合することにより、フロント部１１１ｆ内に安定に保持されている。この例では、ドライバケーシング１１２２の円筒部１１２２ａ及び後端（図示右端）の周縁部が、フロント部１１１ｆの内壁に全周に亘って接している。これにより、フロント部１１１ｆと端板部１１２２ｂとの間に第２共鳴室４２が形成されている。第２共鳴室４２は、ポート１１２２ｃを介して第１共鳴室４１と連通している。 The driver casing 1122 is stably held in the front portion 111f by fitting the cylindrical portion 1122a to the fitting portion 111b of the front portion 111f. In this example, the cylindrical portion 1122a of the driver casing 1122 and the peripheral edge portion of the rear end (the right end in the drawing) are in contact with the inner wall of the front portion 111f over the entire circumference. Thereby, the second resonance chamber 42 is formed between the front portion 111f and the end plate portion 1122b. The second resonance chamber 42 communicates with the first resonance chamber 41 via the port 1122c.
　リア部１１１ｒの後端（図示右端）１１１ｃには、円形の蓋１１４が取り付けられている。蓋１１４の外面Ｓｃは、耳装着体１０の球形の表面Ｓの一部をなす。蓋１１４の外面Ｓｃは、自然状態におけるキャップ１２の表面Ｓａと同じ曲率の部分球面である。蓋１１４とリア部１１１ｒとは強固且つ気密に互いに固定されている。蓋１１４は、金属又はプラスチックでできている。蓋１１４の中央部には、貫通孔１１４ａが設けられている。貫通孔１１４ａには、紐状体２０の端部が挿入されている。蓋１１４と紐状体２０とは強固且つ気密に互いに固定されている。 A circular lid 114 is attached to the rear end (right end in the figure) 111c of the rear portion 111r. The outer surface Sc of the lid 114 forms a part of the spherical surface S of the ear wearing body 10. The outer surface Sc of the lid 114 is a partial spherical surface having the same curvature as the surface Sa of the cap 12 in the natural state. The lid 114 and the rear portion 111r are firmly and airtightly fixed to each other. The lid 114 is made of metal or plastic. A through hole 114 a is provided at the center of the lid 114. The end of the string-like body 20 is inserted into the through hole 114a. The lid 114 and the string-like body 20 are firmly and airtightly fixed to each other.
　リア部１１１ｒの内部空間は、第３共鳴室４３をなす。第３共鳴室４３は、中間部１１１ｍの内部空間４４を介して第２共鳴室４２と連通している。すなわち、第２共鳴室４２と第３共鳴室４３との連通部（内部空間４４）は、くびれている。 The internal space of the rear part 111r forms a third resonance chamber 43. The third resonance chamber 43 communicates with the second resonance chamber 42 via the internal space 44 of the intermediate portion 111m. That is, the communication portion (internal space 44) between the second resonance chamber 42 and the third resonance chamber 43 is constricted.
（キャップ）
　キャップ１２は、略球形の部材である。キャップ１２の外面Ｓａは、耳装着体１０の表面Ｓの大部分を占める、キャップ１２は、スポンジ材で形成されている。キャップ１２に使用されるスポンジ材は、通気性の高い連続気泡構造を有している。その代表例は、高発泡・高通気ウレタンフォームである。キャップ１２は、柔軟性、弾力性及び通気性を有する。キャップ１２は、音を透過させる部材である。キャップ１２は、耳障りな高域成分の音を取り除くアナログフィルターとして機能しうる。 (cap)
The cap 12 is a substantially spherical member. The outer surface Sa of the cap 12 occupies most of the surface S of the ear mounting body 10, and the cap 12 is formed of a sponge material. The sponge material used for the cap 12 has an open cell structure with high air permeability. A typical example is a highly foamed and highly breathable urethane foam. The cap 12 has flexibility, elasticity, and breathability. The cap 12 is a member that transmits sound. The cap 12 can function as an analog filter that removes annoying high-frequency sound.
　キャップ１２は、バッフルチューブ１３及びプロテクタ１１３が取り付けられている状態の音響ユニット１１を覆う。キャップ１２とバッフルチューブ１３と蓋１１４とを組み合わせることにより、蓋１１４の中央部を除き、略球形状をなす。音響ユニット１１の放音部１１ａ及び側部１１ｓは、キャップ１２で覆われる。キャップ１２は、音響ユニット１１を外耳道８４の内壁８６から離して支持する（図４参照）。 The cap 12 covers the acoustic unit 11 to which the baffle tube 13 and the protector 113 are attached. By combining the cap 12, the baffle tube 13, and the lid 114, a substantially spherical shape is formed except for the central portion of the lid 114. The sound emitting part 11 a and the side part 11 s of the acoustic unit 11 are covered with a cap 12. The cap 12 supports the acoustic unit 11 away from the inner wall 86 of the ear canal 84 (see FIG. 4).
（バッフルチューブ）
　バッフルチューブ１３は、音響ユニット１１とキャップ１２との間に存在する。バッフルチューブ１３は、音響ユニット１１に環装（外装）されている。バッフルチューブ１３は、音響ユニット１１との間に空気室５０を形成する。バッフルチューブ１３は、音響ユニット１１の外周面１１ｂ（この例では、リア部１１１ｒ及び中間部１１１ｍの外周面）に全周に亘って接触する柔軟な環状の部材である。空気室５０は、音響ユニット１１の外周面１１ｂ（この例では、フロント部１１１ｆの外周面）とバッフルチューブ１３の内周面１３ｄとにより画成される。 (Baffle tube)
The baffle tube 13 exists between the acoustic unit 11 and the cap 12. The baffle tube 13 is mounted (exterior) on the acoustic unit 11. The baffle tube 13 forms an air chamber 50 between the acoustic unit 11 and the baffle tube 13. The baffle tube 13 is a flexible annular member that is in contact with the outer peripheral surface 11b of the acoustic unit 11 (in this example, the outer peripheral surfaces of the rear portion 111r and the intermediate portion 111m) over the entire periphery. The air chamber 50 is defined by the outer peripheral surface 11 b of the acoustic unit 11 (in this example, the outer peripheral surface of the front portion 111 f) and the inner peripheral surface 13 d of the baffle tube 13.
　バッフルチューブ１３は、リア部１１１ｒの最外径部からプロテクタ１１３の中間部に延びている。バッフルチューブ１３のリア部１１１ｒ側の端部１３ｂの外面Ｓｂは、キャップ１２で覆われない。当該外面Ｓｂは、耳装着体１０の球形の表面Ｓの一部をなす。当該外面Ｓｂは、自然状態におけるキャップ１２の外面Ｓａと同じ曲率の部分球面である。 The baffle tube 13 extends from the outermost diameter portion of the rear portion 111r to the intermediate portion of the protector 113. The outer surface Sb of the end portion 13 b on the rear portion 111 r side of the baffle tube 13 is not covered with the cap 12. The outer surface Sb forms a part of the spherical surface S of the ear wearing body 10. The outer surface Sb is a partial spherical surface having the same curvature as the outer surface Sa of the cap 12 in a natural state.
　バッフルチューブ１３の先端部（図示左端部）１３ａは開口している。バッフルチューブ１３の先端部１３ａとプロテクタ１１３との間には、環状の狭い隙間が形成されている。これにより、空気室５０は、音響ユニット１１の放音部１１ａと連通している。バッフルチューブ１３のリア部１１１ｒ側の端部１３ｂは、全周に亘ってリア部１１１ｒに気密に接している。端部１３ｂには、内側に向けて環状の返し部１３ｃが設けられている。返し部１３ｃが、リア部１１１ｒの半球殻に倣って面接触することにより、バッフルチューブ１３とリア部１１１ｒとの間の気密性が保たれている。返し部１３ｃは、中間部１１１ｍに達している。 The tip part (the left end part in the figure) 13a of the baffle tube 13 is open. An annular narrow gap is formed between the tip 13 a of the baffle tube 13 and the protector 113. Thereby, the air chamber 50 communicates with the sound emitting unit 11 a of the acoustic unit 11. The end portion 13b on the rear portion 111r side of the baffle tube 13 is in airtight contact with the rear portion 111r over the entire circumference. An end portion 13b is provided with an annular return portion 13c facing inward. The return portion 13c is in surface contact following the hemispherical shell of the rear portion 111r, so that airtightness between the baffle tube 13 and the rear portion 111r is maintained. The return part 13c reaches the intermediate part 111m.
　バッフルチューブ１３は、ユニットケーシング１１１よりも遙かに軟らかい。バッフルチューブ１３は、キャップ１２と同等の柔軟性を有する。バッフルチューブ１３は、外力が加わると容易に変形する。バッフルチューブ１３は、外力が加わらなくなると、自然状態の形状に復元する。図２に示されているバッフルチューブ１３の形状は、自然状態の形状である。 The baffle tube 13 is much softer than the unit casing 111. The baffle tube 13 has the same flexibility as the cap 12. The baffle tube 13 is easily deformed when an external force is applied. The baffle tube 13 is restored to its natural state when no external force is applied. The shape of the baffle tube 13 shown in FIG. 2 is a natural state shape.
　バッフルチューブ１３は、弾力性を有する。バッフルチューブ１３は、エラストマでできている。エラストマの例として、シリコーンゴムを挙げることができる。エラストマでできたバッフルチューブ１３とスポンジ材（発泡ウレタンフォーム、発泡シリコーン、等）でできたキャップ１２との間には、比較的大きい摩擦力が働く。その摩擦力が音響ユニット１１とキャップ１２との相対移動を難くしている。これにより、音響ユニット１１に対するキャップ１２の位置ずれ、及び音響ユニット１１からのキャップ１２の不用意な離脱或いは望まない離脱が防止される。 The baffle tube 13 has elasticity. The baffle tube 13 is made of an elastomer. An example of an elastomer is silicone rubber. A relatively large frictional force acts between the baffle tube 13 made of elastomer and the cap 12 made of sponge material (foamed urethane foam, foamed silicone, etc.). The frictional force makes relative movement between the acoustic unit 11 and the cap 12 difficult. Thereby, the positional displacement of the cap 12 with respect to the acoustic unit 11 and the inadvertent or undesired separation of the cap 12 from the acoustic unit 11 are prevented.
（コントローラ）
　図１に示すように、コントローラ３０は、ケーシング３３を有する。ケーシング３３は、プラスチックでできている。バッテリ３１及び無線モジュール３２は、ケーシング３３に収容されている。ケーシング３３の紐状体２０の短尺部２０Ａが接続されている側の端部には、音入口３３ａが開口している。 (controller)
As shown in FIG. 1, the controller 30 has a casing 33. The casing 33 is made of plastic. The battery 31 and the wireless module 32 are accommodated in the casing 33. A sound inlet 33a is opened at the end of the casing 33 on the side where the short portion 20A of the string-like body 20 is connected.
　バッテリ３１は、無線モジュール３２に電力を供給する。バッテリ３１は、一次電池または二次電池である。 The battery 31 supplies power to the wireless module 32. The battery 31 is a primary battery or a secondary battery.
（無線モジュール）
　図３に示すように、無線モジュール３２は、拾音部３２１と通信部３２２と操作部３２３と制御部３２４とを有する。 (Wireless module)
As illustrated in FIG. 3, the wireless module 32 includes a sound pickup unit 321, a communication unit 322, an operation unit 323, and a control unit 324.
　拾音部３２１は、収容体３０の外部の音声を、音入口３３ａを通して拾音し、拾音信号（電気信号）を出力する。出力された拾音信号は、通信部３２２に入力される。拾音部３２１は、通話時に送話器の働きをする。 The sound pickup unit 321 picks up the sound outside the container 30 through the sound inlet 33a and outputs a sound pickup signal (electric signal). The output sound pickup signal is input to the communication unit 322. The sound pickup unit 321 functions as a transmitter during a call.
　通信部３２２は、図示しない通信器（オーディオプレイヤ、スマートフォン、等、オーディオコンテンツ提供装置）から無線送信された信号を受信する。受信部と図示しない送信器との間の通信プロトコルとして、Ｗｉ－Ｆｉ（登録商標）、ブルートゥース（登録商標）、または他のプロトコルを使用することができる。 The communication unit 322 receives a signal wirelessly transmitted from a communication device (audio content providing device such as an audio player or a smartphone) (not shown). Wi-Fi (registered trademark), Bluetooth (registered trademark), or other protocols can be used as a communication protocol between the receiving unit and a transmitter (not shown).
　通信部３２２は、右音声出力端子３２２Ｒと左音声出力端子３２２Ｌとを有する。通信部３２２は、受信した信号を増幅し、増幅した受信信号から右音声用の駆動信号（右音声信号）と左音声用の駆動信号（左音声信号）とを生成する処理を実行する。右音声信号は、右音声出力端子３２２Ｒから出力され、紐状体２０の導線２０１を通じて、一方の耳装着体１０（例えば、耳装着体１０Ａ）のドライバユニット１１２に入力される。左音声信号は、左音声出力端子３２２Ｌから出力され、紐状体２０の導線２０１を通じて、他方の耳装着体１０（例えば、耳装着体１０Ｂ）のドライバユニット１１２に入力される。各ドライバユニット１１２は、入力された右音声信号及び左音声信号をそれぞれ右音声と左音声とに変換して出力する。 The communication unit 322 has a right audio output terminal 322R and a left audio output terminal 322L. The communication unit 322 performs processing of amplifying the received signal and generating a right audio drive signal (right audio signal) and a left audio drive signal (left audio signal) from the amplified received signal. The right audio signal is output from the right audio output terminal 322R, and is input to the driver unit 112 of one ear wearing body 10 (for example, the ear wearing body 10A) through the conductive wire 201 of the string-like body 20. The left audio signal is output from the left audio output terminal 322L, and is input to the driver unit 112 of the other ear wearing body 10 (for example, the ear wearing body 10B) through the conductive wire 201 of the string-like body 20. Each driver unit 112 converts the input right audio signal and left audio signal into right audio and left audio, respectively, and outputs the result.
　また、通話時には、通信部３２１は、拾音部３２１から入力された拾音信号を信号処理し、図示しない通信器に送信する。通話時には、耳装着体１０は、受話器の働きをする。 Also, during a call, the communication unit 321 performs signal processing on the sound pickup signal input from the sound pickup unit 321 and transmits it to a communication device (not shown). During a call, the ear wearing body 10 functions as a receiver.
　操作部３２３は、オン／オフボタン３２３Ａと増大ボタン３２３Ｂと減少ボタン３２３Ｃとを有する。オン／オフボタン３２３Ａと増大ボタン３２３Ｂと減少ボタン３２３Ｃは、ケーシング３２に設けられた開口部から露出している。オン／オフボタン３２３Ａは、バッテリ３１からの電力の供給をオンオフするための操作子である。増大ボタン３２３Ｂは、通信部３２２による電気信号の出力を増大させるための操作子である。減少ボタン３２３Ｃは、通信部３２２による電気信号の出力を減少させるための操作子である。 The operation unit 323 includes an on / off button 323A, an increase button 323B, and a decrease button 323C. The on / off button 323 </ b> A, the increase button 323 </ b> B, and the decrease button 323 </ b> C are exposed from an opening provided in the casing 32. The on / off button 323 </ b> A is an operator for turning on / off the supply of electric power from the battery 31. The increase button 323B is an operator for increasing the output of an electrical signal by the communication unit 322. The decrease button 323C is an operator for decreasing the output of an electrical signal by the communication unit 322.
　制御部３２４は、操作部３２３に対してなされる基本操作に応じて、バッテリ３１からの電力の供給をオン／オフさせたり、通信部３２２による電気信号の出力を増減させたりする。基本操作は、オン／オフボタン３２３Ａと増大ボタン３２３Ｂと減少ボタン３２３Ｃを、それぞれ単独で所定時間押圧する操作である。 The control unit 324 turns on / off the supply of power from the battery 31 or increases / decreases the output of electric signals from the communication unit 322 according to basic operations performed on the operation unit 323. The basic operation is an operation of pressing the on / off button 323A, the increase button 323B, and the decrease button 323C independently for a predetermined time.
　また、制御部３２４は、操作部３２３に対してなされる付加操作に応じて、着信に応答する、通話状態を終了させる、リダイヤルする、楽曲の再生を開始する、次の曲へ切り替える、等の処理を実行する。付加操作には、オン／オフボタン３２３Ａ、増大ボタン３２３Ｂ及び減少ボタン３２３Ｃを、それぞれ単独で、基本操作とは異なる所定時間押圧する操作が含まれる。付加操作には、オン／オフボタン３２３Ａ、増大ボタン３２３Ｂ及び減少ボタン３２３Ｃを、それぞれ単独で、所定回数連続押しする操作が含まれる。なお、制御部３２４は、着信時にいずれかのボタンが操作された場合には、直ぐに着信応答（通話開始処理）を実行する。 In addition, the control unit 324 responds to an incoming call according to an additional operation performed on the operation unit 323, terminates the call state, redials, starts playing a song, switches to the next song, etc. Execute the process. The additional operation includes an operation of pressing the on / off button 323A, the increase button 323B, and the decrease button 323C independently for a predetermined time different from the basic operation. The addition operation includes an operation of continuously pressing the on / off button 323A, the increase button 323B, and the decrease button 323C for a predetermined number of times independently. Note that the control unit 324 immediately executes an incoming call response (call start processing) when any button is operated during an incoming call.
　上記のように構成された第１実施形態のイヤホン１Ａは、図４に示すように、キャップ１２が外耳道８４に嵌まることにより、音響ユニット１１と外耳道８４の内壁８６との間に、バッフルチューブ１３とキャップ１２とが介在する。これにより、音響ユニット１１は、外耳道８４の内壁８６から離して支持される。音響ユニット１１は、放音部１１ａを外耳道８４内に向けて配置される。音響ユニット１１の放音部１１ａは、外耳道８４内の入口８５付近に配置される。そして、音響ユニット１１から発せられた音がキャップ１２を放射状に透過して外耳道８４内に放音される。音導管９５３及びイヤピース９５４（図８参照）が存在しないため、外耳道８４内の入口８５付近にて音響ユニット１１から発せられた再生音が、キャップ１２を透過して外耳道８４の皮膚やその周辺の骨に伝達される。 As shown in FIG. 4, the earphone 1 </ b> A of the first embodiment configured as described above has a baffle tube between the acoustic unit 11 and the inner wall 86 of the ear canal 84 when the cap 12 fits into the ear canal 84. 13 and the cap 12 are interposed. Thereby, the acoustic unit 11 is supported away from the inner wall 86 of the ear canal 84. The acoustic unit 11 is disposed with the sound emitting part 11 a facing the external auditory canal 84. The sound emitting unit 11 a of the acoustic unit 11 is disposed near the entrance 85 in the ear canal 84. Then, the sound emitted from the acoustic unit 11 passes through the cap 12 radially and is emitted into the ear canal 84. Since the sound conduit 953 and the earpiece 954 (see FIG. 8) are not present, the reproduced sound emitted from the acoustic unit 11 near the entrance 85 in the external auditory canal 84 passes through the cap 12 and passes through the skin of the external auditory canal 84 and its surroundings. Transmitted to bone.
　よって、第１実施形態のイヤホン１Ａによれば、音響ユニット１１から発せられた音を、外耳道８４周辺の音を感じる部分の能力を最大限に活用して、自然な音響として認知することができる。 Therefore, according to the earphone 1 </ b> A of the first embodiment, the sound emitted from the acoustic unit 11 can be recognized as natural sound by making the best use of the ability of the part around the ear canal 84 to feel the sound. .
　また、第１実施形態のイヤホン１Ａによれば、ドライバユニット１１２の放音部としての振動板１１２１ａが外耳道８４内の入口８５付近に配置されるので、ドライバユニット１１２から発せられる音を効率良く外耳道８４に導くことができる。よって、小寸（小出力）のドライバユニット１１２を使用しているにもかかわらず、その再生音を自然な音響として認知できる。 Further, according to the earphone 1A of the first embodiment, the diaphragm 1121a as the sound emitting portion of the driver unit 112 is disposed near the entrance 85 in the ear canal 84, so that the sound emitted from the driver unit 112 can be efficiently generated. 84. Therefore, although the small (small output) driver unit 112 is used, the reproduced sound can be recognized as natural sound.
　また、第１実施形態のイヤホン１Ａは、音導管９５３（図８参照）を使用しないため、ドライバユニット１１２から聴覚器官に伝達される音域が制限されない。よって、ドライバユニット１１２の性能を十分に発揮させることができる。 Also, since the earphone 1A of the first embodiment does not use the sound conduit 953 (see FIG. 8), the sound range transmitted from the driver unit 112 to the auditory organ is not limited. Therefore, the performance of the driver unit 112 can be fully exhibited.
　また、第１実施形態によれば、キャップ１２とバッフルチューブ１３と蓋１１４とを組み合わせてなるほぼ完全な球形状の耳装着体１０を備えた斬新なデザインのイヤホン１Ａを実現し得る。 Further, according to the first embodiment, it is possible to realize the earphone 1A having a novel design including the almost perfect spherical ear mounting body 10 formed by combining the cap 12, the baffle tube 13, and the lid 114.
　また、第１実施形態のイヤホン１Ａは、耳装着体１０の球形の表面Ｓの大部分を柔軟なキャップ１２の外面Ｓａが占めるので、多くの人の外耳道８４にフィットし易い。また、耳８４に対する音響ユニット１１の角度が多少変化しても、外耳道８４の内壁８６と音響ユニット１１との間に、キャップ１２及びバッフルチューブ１３が介在しているので、音響ユニット１１が外耳道８４の内壁８６から離して支持される。 Moreover, since the outer surface Sa of the flexible cap 12 occupies most of the spherical surface S of the ear mounting body 10 in the earphone 1A of the first embodiment, it is easy to fit the ear canal 84 of many people. Even if the angle of the acoustic unit 11 with respect to the ear 84 is slightly changed, the cap 12 and the baffle tube 13 are interposed between the inner wall 86 of the external auditory canal 84 and the acoustic unit 11. It is supported away from the inner wall 86.
　また、第１実施形態のイヤホン１Ａは、耳８４に接触する部分がキャップ１２だけであり且つキャップ１２が柔軟なスポンジ材からなるので、耳８４への装着感が良好で、長時間着けていても耳８４に痛みが生じにくい。 Further, the earphone 1A of the first embodiment has only a cap 12 in contact with the ear 84, and the cap 12 is made of a flexible sponge material. Also, the ear 84 is less painful.
　また、第１実施形態のイヤホン１Ａは、外耳道８４に嵌まるキャップ１２が通気性を有するスポンジ材からなるので、外耳道８４を気密に密閉しない。このためタッチノイズが発生しにくい。 Further, in the earphone 1A of the first embodiment, the cap 12 fitted to the external auditory canal 84 is made of a sponge material having air permeability, so that the external auditory canal 84 is not hermetically sealed. For this reason, touch noise hardly occurs.
　また、第１実施形態のイヤホン１Ａは、左右の耳８４にそれぞれ装着される一対の耳装着体１０が、互いに同形状且つ同寸法であるので、右耳用と左耳用とで形状が互いに異なる一対の装着体を備える場合と比較して、製造コストを低減できる。 Further, in the earphone 1A of the first embodiment, the pair of ear attachment bodies 10 respectively attached to the left and right ears 84 have the same shape and the same size, so that the shape is the same for the right ear and the left ear. Compared with the case where a different pair of mounting bodies is provided, the manufacturing cost can be reduced.
　また、第１実施形態のイヤホン１Ａは、音響ユニット１１とキャップ１２との間にバッフルチューブ１３が存在するので、外耳道８４を気密に密閉しないにもかかわらず、中低音再現性が良い。外耳道８４外への音漏れが抑制されるからである。また、バッフルチューブ１３の内部空間が空気室５０をなすので、中低音再現性が更に良好である。バッフルチューブ１３は、空気室５０内の空気を音響ユニット１１から発せられた音に共振させることで、中低音域の音響増幅器（受動増幅器）として機能し得る。そして、バッフルチューブ１３は、外耳道８４内へ効率的に音を反響させる「バッフル」として機能する。 Moreover, since the earphone 1A of the first embodiment includes the baffle tube 13 between the acoustic unit 11 and the cap 12, the mid-bass reproducibility is good even though the ear canal 84 is not hermetically sealed. This is because sound leakage outside the ear canal 84 is suppressed. Further, since the internal space of the baffle tube 13 forms the air chamber 50, the mid-low sound reproducibility is further improved. The baffle tube 13 can function as an acoustic amplifier (passive amplifier) in the mid-low range by causing the air in the air chamber 50 to resonate with the sound emitted from the acoustic unit 11. The baffle tube 13 functions as a “baffle” that efficiently reflects the sound into the ear canal 84.
　また、第１実施形態のイヤホン１Ａは、バッフルチューブ１３の先端部１３ａとプロテクタ１１３との間に環状の狭い隙間が形成されていることで、放音部１１ａから放音され音響ユニット１１の後方（外耳道８４の外側）に回り込む音が空気室５０内に伝達し易くなる。そして、バッフルチューブ１３のリア部１１１ｒ側の端部１３ｂが全周に亘ってリア部１１１ｒに気密に接していることで、空気室５０内に伝達した音が空気室５０の後方（外耳道８４の外側）に伝達し難くなる。これにより、外耳道８４外への音漏れがより効果的に抑制され、中低音再現性がより良好となる。 Further, the earphone 1A of the first embodiment has a narrow annular gap formed between the tip portion 13a of the baffle tube 13 and the protector 113, so that the sound is emitted from the sound emitting portion 11a and is behind the acoustic unit 11. Sound that wraps around (outside the ear canal 84) is easily transmitted into the air chamber 50. And since the end portion 13b on the rear portion 111r side of the baffle tube 13 is in airtight contact with the rear portion 111r over the entire circumference, the sound transmitted into the air chamber 50 is behind the air chamber 50 (the ear canal 84). It becomes difficult to communicate to the outside. Thereby, sound leakage to the outside of the external auditory canal 84 is more effectively suppressed, and the mid / low frequency reproducibility becomes better.
　また、第１実施形態のイヤホン１Ａは、音響ユニット１１とキャップ１２との間に存在する柔軟なバッフルチューブ１３がクッションとしての役割も果たすので、キャップ１２とバッフルチューブ１３との相乗作用により、従来のイヤホンでは体感し得ない極めて良好な装着感を実現し得る。 Moreover, since the flexible baffle tube 13 existing between the acoustic unit 11 and the cap 12 also serves as a cushion in the earphone 1A of the first embodiment, the synergistic action of the cap 12 and the baffle tube 13 enables The earphone can realize a very good wearing feeling that cannot be experienced.
　また、第１実施形態のイヤホン１Ａは、第１共鳴室４１と第２共鳴室４２と第３共鳴室４３とを備え、第１共鳴室４１と第２共鳴室４２とが細い通路（ポート１１２２ｃ）で結ばれているので、低音が増幅される。そして、第２共鳴室４２と第３共鳴室４３とが細い通路（内部空間４４）で結ばれているので、低音が更に増幅される。 Further, the earphone 1A of the first embodiment includes a first resonance chamber 41, a second resonance chamber 42, and a third resonance chamber 43, and the first resonance chamber 41 and the second resonance chamber 42 are narrow passages (port 1122c). ), The bass is amplified. And since the 2nd resonance chamber 42 and the 3rd resonance chamber 43 are connected by the thin channel | path (internal space 44), a bass is further amplified.
　また、第１実施形態のイヤホン１Ａは、バッフルチューブ１３の端部１３ｂの外面Ｓｂが露出しているので、空気室５０の存在を外部から認識させうる。バッフルチューブ１３の材質に、例えば半透明のシリコーンゴムを使用することにより、空気室５０の存在を外部からより認識し易くできる。このように、第１実施形態によれば、空気室５０を備えた斬新な構造のイヤホン１Ａが実現される。また、バッフルチューブ１３を外部から視認しうる構造を採用することで、高い音響性能と機能美とを兼ね備えた斬新なイヤホン１Ａを実現し得る。 Moreover, since the outer surface Sb of the end portion 13b of the baffle tube 13 is exposed, the earphone 1A of the first embodiment can recognize the presence of the air chamber 50 from the outside. By using, for example, translucent silicone rubber as the material of the baffle tube 13, the presence of the air chamber 50 can be more easily recognized from the outside. Thus, according to the first embodiment, the earphone 1A having a novel structure including the air chamber 50 is realized. Further, by adopting a structure in which the baffle tube 13 can be visually recognized from the outside, a novel earphone 1A having both high acoustic performance and functional beauty can be realized.
　なお、図４には表現されていないが、バッフルチューブ１３は、耳８０に装着したときに、キャップ１２と共に外側から圧縮される。 Although not shown in FIG. 4, the baffle tube 13 is compressed from the outside together with the cap 12 when attached to the ear 80.
［その他の実施形態］
　以下、その他の実施の形態について説明する。以下の説明では、既に説明した実施形態と同一又は機能的に共通の構成要素については、同じ符号を付して説明を省略する。 [Other Embodiments]
Hereinafter, other embodiments will be described. In the following description, constituent elements that are the same as or functionally common to the already described embodiments are assigned the same reference numerals, and descriptions thereof are omitted.
　図５に示す第２実施形態のイヤホン１Ｂは、一対の耳装着体１０同士を磁力で連結させるための磁性体６０を備えている。磁性体６０は、蓋１１４の裏面に固定されて、第３共鳴室４３内に設けられている。その他の構成は、第１実施形態と同じである。磁性体６０は、円環状の部材である。磁性体６０は、紐状体２０に環装されている。一方の耳装着体１０（例えば、耳装着体１０Ａ）に設けられた磁性体６０は、永久磁石である。他方の耳装着体１０（例えば、耳装着体１０Ｂ）に設けられた磁性体６０は、永久磁石又は鉄などの強磁性体である。当該永久磁石には、フェライト磁石、ネオジウム磁石、等、が含まれる。 The earphone 1B of the second embodiment shown in FIG. 5 includes a magnetic body 60 for connecting the pair of ear wearing bodies 10 with each other by magnetic force. The magnetic body 60 is fixed to the back surface of the lid 114 and provided in the third resonance chamber 43. Other configurations are the same as those of the first embodiment. The magnetic body 60 is an annular member. The magnetic body 60 is wrapped around the string-like body 20. The magnetic body 60 provided in one ear mounting body 10 (for example, the ear mounting body 10A) is a permanent magnet. The magnetic body 60 provided in the other ear mounting body 10 (for example, the ear mounting body 10B) is a ferromagnetic body such as a permanent magnet or iron. The permanent magnet includes a ferrite magnet, a neodymium magnet, and the like.
　第２実施形態によれば、両耳装着体１０同士を磁力で連結させることにより、イヤホン１Ｂを環状に保つことができるので、イヤホン１Ｂをネックレスのようにユーザの首に装着することができる。また、イヤホン１Ｂをユーザの手首に巻き、両耳装着体１０同士を磁力で連結させることにより、イヤホン１Ｂをユーザの手首に安定に装着できる。その他の作用・効果は第１実施形態と同様である。 According to the second embodiment, the earphone 1B can be kept in an annular shape by connecting the both ear mounting bodies 10 with a magnetic force, so that the earphone 1B can be attached to the user's neck like a necklace. Moreover, the earphone 1B can be stably worn on the wrist of the user by winding the earphone 1B around the wrist of the user and connecting the ear-wearing bodies 10 together with a magnetic force. Other operations and effects are the same as those of the first embodiment.
　図６に示す第３実施形態のイヤホン１Ｃは、コントローラ３０（図１参照）を備えていない。一対の耳装着体１０は、コントローラ３０の機能を分担している。その他の構成は、第１実施形態又は第２実施形態と同じである。 The earphone 1C of the third embodiment shown in FIG. 6 does not include the controller 30 (see FIG. 1). The pair of ear wearing bodies 10 share the function of the controller 30. Other configurations are the same as those in the first embodiment or the second embodiment.
　第３実施形態によれば、一対の球形の耳装着体１０と両耳装着体１０同士を連結する紐状体２０とからなる、極めてシンプル且つ斬新なイヤホン１Ｃが実現される。第３実施形態のイヤホン１Ｃは、一対の耳装着体１０の間にコントローラ３０が存在しないので、ユーザの手首などに巻き付けて装着し易い。その他の作用・効果は第１実施形態又は第１実施形態と同様である。 According to the third embodiment, an extremely simple and novel earphone 1C including a pair of spherical ear mounting bodies 10 and a string-like body 20 that connects the both ear mounting bodies 10 to each other is realized. Since the earphone 1C of the third embodiment does not have the controller 30 between the pair of ear wearing bodies 10, the earphone 1C is easy to be worn around the user's wrist. Other operations and effects are the same as those in the first embodiment or the first embodiment.
　なお、本発明の実施形態は上記の実施形態に限定されるものではなく、本発明の技術的思想の趣旨を逸脱しない範囲において様々に変更、置換、変形されてもよい。 The embodiment of the present invention is not limited to the above-described embodiment, and various changes, substitutions, and modifications may be made without departing from the spirit of the technical idea of the present invention.
　例えば、第１実施形態のイヤホン１Ａ及び第２実施形態のイヤホンＢは、紐状体２０の長さ方向中心から片寄った位置にコントローラが設けられているが、紐状体２０の長さ方向中心部にコントローラ３０が設けられてもよい。 For example, the earphone 1 </ b> A of the first embodiment and the earphone B of the second embodiment are provided with a controller at a position offset from the longitudinal center of the string-like body 20. The controller 30 may be provided in the unit.
　また、上記実施形態のイヤホン１Ａ乃至１Ｃは、紐状体２０が両耳装着体１０に常時接続されているが、両耳装着体１０にリケーブル用の端子を設け、当該端子に任意の紐状体２０を接続するようにしてもよい。 In the earphones 1A to 1C of the above-described embodiment, the cord-like body 20 is always connected to the binaural mounting body 10, but a terminal for re-cable is provided on the binaural mounting body 10 and an arbitrary cord is connected to the terminal. The shape body 20 may be connected.
　また、上記実施形態のイヤホン１Ａ乃至１Ｃは、バッフルチューブ１３の先端部１３ａとプロテクタ１１３との間に、環状の狭い隙間が形成されているが、当該隙間は必須の構成要素ではない。当該隙間が存在しなくても或いは当該隙間が存在しない方が、中低音再現性を高める上で有利である可能性もある。また、バッフルチューブ１３とフロント部１１１ｆとにより密閉構造の空気室５０を形成してもよい。音響ユニット１１から発せられた音に密閉構造の空気室５０内の空気が共振する構造により、バッフルチューブ１３がより高性能な音響増幅器として機能し得る可能性がある。 Further, in the earphones 1A to 1C of the above embodiment, an annular narrow gap is formed between the tip 13a of the baffle tube 13 and the protector 113, but the gap is not an essential component. There is a possibility that the absence of the gap or the absence of the gap may be advantageous in improving the mid-bass reproducibility. Moreover, you may form the air chamber 50 of a sealing structure with the baffle tube 13 and the front part 111f. There is a possibility that the baffle tube 13 can function as a higher performance acoustic amplifier due to the structure in which the air in the air chamber 50 having a sealed structure resonates with the sound emitted from the acoustic unit 11.
　また、上記実施形態のイヤホン１Ａ乃至１Ｃは、第１共鳴室４１を備えているが、第１共鳴室４１は必須の構成要素ではない。 In addition, although the earphones 1A to 1C of the above embodiment include the first resonance chamber 41, the first resonance chamber 41 is not an essential component.
　また、上記実施形態のイヤホン１Ａ乃至１Ｃは、第２共鳴室４２を備えているが、第２共鳴室４２は必須の構成要素ではない。 Moreover, although the earphones 1A to 1C of the above embodiment include the second resonance chamber 42, the second resonance chamber 42 is not an essential component.
　また、上記実施形態のイヤホン１Ａ乃至１Ｃは、第３共鳴室４３及び内部空間４４を備えているが、第３共鳴室４３及び内部空間４４は必須の構成要素ではない。 In addition, although the earphones 1A to 1C of the above embodiment include the third resonance chamber 43 and the internal space 44, the third resonance chamber 43 and the internal space 44 are not essential components.
　また、上記実施形態のイヤホン１Ａ乃至１Ｃは、第１エンクロージャとしてのドライバケーシング１１２２を備えているが、ドライバケーシング１１２２は必須の構成要素ではない。すなわち、音響ユニット１１がドライバユニット１１２自体を構成してもよい。 Further, although the earphones 1A to 1C of the above-described embodiment include the driver casing 1122 as the first enclosure, the driver casing 1122 is not an essential component. That is, the acoustic unit 11 may constitute the driver unit 112 itself.
　また、上記実施形態のイヤホン１Ａ乃至１Ｃにおいて、空気室５０の紐状体２０側の空間（図示右側の空間）に音響振動吸収層を設けてもよい。空気室５０に音響振動吸収層を設けることで、バッフルチューブ１３による外耳道８４外への音漏れ防止性能を高めることができる。音響振動吸収層の素材の例として、株式会社タイカにより開発されたαGEL（登録商標）を挙げることができる。αGEL（登録商標）は、シリコーンを主成分とする軟らかいゲル状の素材である。 Further, in the earphones 1A to 1C of the above-described embodiment, an acoustic vibration absorbing layer may be provided in the space on the string-like body 20 side of the air chamber 50 (the space on the right side in the drawing). By providing the acoustic vibration absorbing layer in the air chamber 50, it is possible to enhance the performance of preventing sound leakage to the outside of the ear canal 84 by the baffle tube 13. As an example of the material of the acoustic vibration absorbing layer, αGEL (registered trademark) developed by Taika Co., Ltd. can be mentioned. αGEL (registered trademark) is a soft gel-like material mainly composed of silicone.
　また、上記実施形態では、キャップ１２としてスポンジ材からなる部材を用いているが、弾力性、柔軟性及び通気性を有する部材であれば、スポンジ材からなる部材に限らない。 In the above-described embodiment, a member made of a sponge material is used as the cap 12, but the cap 12 is not limited to a member made of a sponge material as long as it has elasticity, flexibility, and air permeability.
　また、上記実施形態では、振動板１１２１ａが外耳道８４内の入口８５付近に配置される装着態様（図４）を例示したが、それ以外の装着態様とすることも可能である。本発明に係る音響装置の装着態様には、振動板１１２１ａが外耳道８４の丁度入口８５に配置される装着態様が含まれる。本発明に係る音響装置の装着態様には、振動板１１２１ａが外耳道８４外の入口８５付近に配置される装着態様が含まれる。 In the above embodiment, the mounting mode (FIG. 4) in which the diaphragm 1121a is disposed near the entrance 85 in the ear canal 84 is illustrated, but other mounting modes are possible. The mounting mode of the acoustic device according to the present invention includes a mounting mode in which the diaphragm 1121a is disposed just at the entrance 85 of the ear canal 84. The mounting mode of the acoustic device according to the present invention includes a mounting mode in which the diaphragm 1121a is disposed near the entrance 85 outside the ear canal 84.
　また、上記実施形態では、ドライバユニット１１２の放音部として振動板１１２１ａを例示したが、放音部は振動板１１２１ａに限らない。ドライバユニット１１２の放音部は、音声発生源となる振動体から発せられた音の出口（窓）であってもよい。すなわち、ドライバユニット１１２は、ダイナミック型に限らず、バランスド・アーマチュア型でもよい。また、ドライバユニット１１２は、低域用、中域用、高域用、等、音響特性の異なる複数の電気音響変換素子１１２１を備えてもよい。 In the above embodiment, the diaphragm 1121a is exemplified as the sound emitting part of the driver unit 112, but the sound emitting part is not limited to the diaphragm 1121a. The sound emission part of the driver unit 112 may be an outlet (window) of sound emitted from a vibrating body that is a sound generation source. That is, the driver unit 112 is not limited to a dynamic type, and may be a balanced armature type. In addition, the driver unit 112 may include a plurality of electroacoustic transducers 1121 having different acoustic characteristics, such as for a low frequency band, a mid frequency band, and a high frequency band.
　また、第１実施形態のイヤホン１Ａでは、コントローラ３０がバッテリ３１を備えているが、バッテリ３１を収容したバッテリケーシングを、コントローラ３０とは別に紐状体２０の中間部に備えてもよい。 In the earphone 1 </ b> A of the first embodiment, the controller 30 includes the battery 31, but a battery casing that houses the battery 31 may be provided in an intermediate portion of the string-like body 20 separately from the controller 30.
　また、上記実施形態では、介在部材としてチューブ状の部材（バッフルチューブ１３）を用いているが、これに代えて、音響ユニット１１を包囲するトーラス状の柔軟な中空部材（バッフルトーラス）を用いてもよい。バッフルトーラスは、ユニットケーシング１１１のフロント部材１１１ｆとリア部材１１１ｒとの間の括れた部分に取り付けることで、音響ユニット１１に安定に保持される。 Moreover, in the said embodiment, although the tubular member (baffle tube 13) is used as an interposition member, it replaces with this and uses the torus-like flexible hollow member (baffle torus) which surrounds the acoustic unit 11. Also good. The baffle torus is stably held by the acoustic unit 11 by being attached to the constricted portion between the front member 111f and the rear member 111r of the unit casing 111.
　また、上記実施形態では、介在部材を「バッフルチューブ」と称したが、空気室５０を有するものという意味で「エアチューブ」と称してもよい。同じ趣旨で、「バッフルトーラス」を「エアトーラス」と称してもよい。また、介在部材を、クッションとして働くものという意味で「エアクッション」或いは「クッションチューブ」と称してもよい。 In the above embodiment, the interposition member is referred to as a “baffle tube”, but may be referred to as an “air tube” in the sense of having an air chamber 50. For the same purpose, “baffle torus” may be referred to as “air torus”. Further, the interposition member may be referred to as “air cushion” or “cushion tube” in the sense that it acts as a cushion.
　また、上記実施形態では、音響装置の実施形態の例として、イヤホンの形態例を示したが、本発明に係る音響装置には、イヤホン以外の音響装置も含まれる。イヤホン以外の音響装置の例として、補聴器、インカム、等、マイクを備えた機器を挙げることができる。 In the above embodiment, the example of the earphone is shown as an example of the embodiment of the acoustic device. However, the acoustic device according to the present invention includes an acoustic device other than the earphone. Examples of acoustic devices other than earphones include devices equipped with a microphone, such as hearing aids and income.
［総括］
　本明細書には少なくとも以下の事項が記載されている。なお、括弧内には、上記した実施形態において対応する構成要素等を示しているが、これに限定されるものではない。 [Summary]
This specification describes at least the following matters. In addition, although the component etc. which respond | correspond in the above-mentioned embodiment are shown in a parenthesis, it is not limited to this.
　（１）　左右の耳（耳８４）にそれぞれ装着される一対の球形の耳装着体（耳装着体１０、１０Ａ、１０Ｂ）と、
　両耳装着体を互いに連結する紐状体（紐状体２０）と、を有し、
　前記紐状体は、前記耳装着体の球形の表面（表面Ｓ）から延びており、
　前記耳装着体は、
　音響ユニット（音響ユニット１１）と、皮膚接触部材（キャップ１２）と、介在部材（バッフルチューブ１３）と、を有し、
　前記音響ユニットは、少なくともその放音部（放音部１１ａ）及び側部（側部１１ｓ）が前記皮膚接触部材で覆われており、
　前記皮膚接触部材は、柔軟性、弾力性及び通気性を有し、且つ、音を透過させる部材で
あり、
　前記介在部材は、前記皮膚接触部材と前記音響ユニットとの間に存在して、前記皮膚接触部材と前記音響ユニットとの間に空気室（空気室５０）を形成し、
　前記皮膚接触部材が外耳道（外耳道８４）に嵌まることにより、前記音響ユニットが当該外耳道の内壁（内壁８６）から離して支持される、音響装置（音響装置１Ａ、１Ｂ、１Ｃ）。 (1) a pair of spherical ear attachments ( ear attachments 10, 10A, 10B) respectively attached to the left and right ears (ears 84);
A string-like body (string-like body 20) for connecting both ear wearing bodies to each other;
The string-like body extends from the spherical surface (surface S) of the ear wearing body,
The ear wearing body is:
An acoustic unit (acoustic unit 11), a skin contact member (cap 12), and an interposition member (baffle tube 13);
The acoustic unit has at least a sound emitting part (sound emitting part 11a) and a side part (side part 11s) covered with the skin contact member,
The skin contact member is a member having flexibility, elasticity and breathability, and transmitting sound,
The interposition member exists between the skin contact member and the acoustic unit, and forms an air chamber (air chamber 50) between the skin contact member and the acoustic unit,
An acoustic device ( acoustic devices 1A, 1B, 1C) in which the acoustic unit is supported away from the inner wall (inner wall 86) of the ear canal by fitting the skin contact member into the ear canal (the ear canal 84).
　（１）の音響装置は、皮膚接触部材が柔軟性、弾力性及び通気性を有する部材であるので、耳への装着感が良好で、長時間着けていても耳に痛みを生じさせ難い。
　（１）の音響装置は、外耳道に嵌まる部分が球形の耳装着体であるので、多くの人の外耳道にフィットし易い。
　（１）の音響装置は、皮膚接触部材と音響ユニットとの間に空気室が存在するので、中低音再現性が良い。 In the acoustic device of (1), since the skin contact member is a member having flexibility, elasticity, and air permeability, the feeling of wearing on the ear is good, and it is difficult to cause pain in the ear even when worn for a long time.
The acoustic device of (1) is easily fitted to the ear canal of many people because the portion that fits into the ear canal is a spherical ear mounting body.
Since the acoustic chamber of (1) has an air chamber between the skin contact member and the acoustic unit, the mid-low sound reproducibility is good.
　（２）　（１）の音響装置において、
　前記一対の球形の耳装着体は、互いに同形状且つ同寸法である、音響装置。 (2) In the acoustic device of (1),
The pair of spherical ear mounting bodies are acoustic devices having the same shape and the same size.
　（２）の音響装置は、左右の耳にそれぞれ装着される一対の耳装着体が、互いに同形状且つ同寸法であるので、右耳用と左耳用とで形状が互いに異なる一対の耳装着体を備える場合と比較して、製造コストを低減できる。 In the acoustic device of (2), since the pair of ear mounting bodies respectively mounted on the left and right ears have the same shape and the same size, a pair of ear mountings different in shape for the right ear and the left ear The manufacturing cost can be reduced as compared with the case where the body is provided.
　（３）　（１）又は（２）の音響装置において、
　前記皮膚接触部材は、スポンジ材からなる部材である、音響装置。 (3) In the acoustic device of (1) or (2),
The acoustic device, wherein the skin contact member is a member made of a sponge material.
　（３）の音響装置は、耳に接触する部分がスポンジ材からなる部材だけであるので、耳への装着感が良好で、長時間着けていても耳に痛みが生じにくい。 (3) Since the acoustic device of (3) is only a member made of sponge material in contact with the ear, the feeling of wearing on the ear is good, and even when worn for a long time, the ear is less painful.
　（４）　（３）の音響装置において、
　前記皮膚接触部材の外面（外面Ｓａ）は、前記耳装着体の表面の大部分を占める、音響装置。 (4) In the acoustic device of (3),
The outer surface (outer surface Sa) of the skin contact member occupies most of the surface of the ear wearing body.
　（４）の音響装置は、柔軟性、弾力性及び通気性を有する部材である皮膚接触部材の外面が、耳装着体の表面の大部分を占めるので、耳への装着感が良好である。 In the acoustic device of (4), since the outer surface of the skin contact member, which is a member having flexibility, elasticity, and air permeability, occupies most of the surface of the ear wearing body, the feeling of wearing on the ear is good.
　（５）　（１）乃至（４）のいずれか１の音響装置において、
　前記介在部材は、前記音響ユニットに環装される柔軟な部材である、音響装置。 (5) In the acoustic device according to any one of (1) to (4),
The interposition member is an acoustic device that is a flexible member that is wrapped around the acoustic unit.
　（５）の音響装置は、空気室を形成する介在部材が音響ユニットに環装されることで音漏れが抑制されるので、中低音再現性が良い。 (5) The sound device has good mid-low sound reproducibility because sound leakage is suppressed by interposing the interposing member forming the air chamber around the sound unit.
　（６）　（５）の音響装置において、
　前記空気室は、前記音響ユニットの前記放音部と連通している、音響装置。 (6) In the acoustic device of (5),
The air chamber is an acoustic device that communicates with the sound emitting unit of the acoustic unit.
　（６）の音響装置は、音響ユニットの放音部と連通していることで、放音部から放音され音響ユニットの後方に回り込む音が空気室内に伝達し易くなる。 (6) Since the acoustic device communicates with the sound emitting unit of the acoustic unit, the sound emitted from the sound emitting unit and circulated behind the acoustic unit is easily transmitted to the air chamber.
　（７）　（５）の音響装置において、前記空気室は、密閉空間である、音響装置。 (7) The acoustic device according to (5), wherein the air chamber is a sealed space.
　（７）の音響装置は、音響ユニットから発せられた音に密閉構造の空気室内の空気が共振することにより、中低音再現性が向上する可能性がある。 In the acoustic device of (7), the mid-bass reproducibility may be improved by the resonance of the air in the sealed air chamber with the sound emitted from the acoustic unit.
　（８）　（５）乃至（６）のいずれか１の音響装置において、
　前記音響ユニットの軸方向における前記介在部材の一部（端部１３ｂ）が全周に亘って前記音響ユニットに接触している、音響装置。 (8) In the acoustic device according to any one of (5) to (6),
The acoustic device in which a part (end portion 13b) of the interposed member in the axial direction of the acoustic unit is in contact with the acoustic unit over the entire circumference.
　（８）の音響装置は、音漏れが更に抑制される。 (8) The sound device further suppresses sound leakage.
　（９）　（１）乃至（８）いずれかの音響装置において、前記紐状体は、導線を有するコードである、音響装置。 (9) In the acoustic device according to any one of (1) to (8), the string-like body is a cord having a conductive wire.
　（９）によれば、左右の耳にそれぞれ装着される一対の球形の耳装着体が、導線を有するコードで互いに連結される。 (9) According to (9), a pair of spherical ear attachments respectively attached to the left and right ears are connected to each other with a cord having a conductive wire.
　（１０）　（９）の音響装置において、前記紐状体の中間部には、コントローラ（コントローラ３０）が設けられている、音響装置。 (10) The acoustic device according to (9), wherein a controller (controller 30) is provided in an intermediate portion of the string-like body.
　（１０）の音響装置は、紐状体の中間部に設けられたコントローラにより操作できる。 (10) The acoustic device can be operated by a controller provided in the middle part of the string-like body.
　（１１）　（１０）の音響装置において、
　前記コントローラは、
　前記コードの長さ方向中心部をユーザの頸部の基部後方に配置して、前記一対の耳装着体を当該ユーザの左右の耳にそれぞれ装着した状態において、当該ユーザの一方の肩に載せ得るように、前記コードの長さ方向中心から片寄った位置に設けられている、音響装置。 (11) In the acoustic device of (10),
The controller is
The cord can be placed on one shoulder of the user in a state where the center portion in the longitudinal direction of the cord is arranged behind the base of the user's neck and the pair of ear wearing bodies are respectively attached to the left and right ears of the user. As described above, the acoustic device is provided at a position offset from the longitudinal center of the cord.
　（１１）によれば、コントローラの加重をユーザの一方の肩で受けることができる。 According to (11), the weight of the controller can be received by one shoulder of the user.
　（１２）　（１）乃至（１１）のいずれか１の音響装置において、
　前記一対の耳装着体は、両耳装着体同士を磁力で連結させるための磁性体（磁性体６０）を備えている音響装置。 (12) In the acoustic device according to any one of (1) to (11),
The pair of ear mounted bodies is an acoustic device including a magnetic body (magnetic body 60) for connecting both ear mounted bodies with magnetic force.
　（１２）によれば、両耳装着体同士を磁力で連結させることにより、音響装置を環状に保つことができる。 According to (12), it is possible to keep the acoustic device in an annular shape by connecting both ear wearing bodies with a magnetic force.
　（１３）　（１１）の音響装置において、前記コントローラはバッテリ（バッテリ３１）を備えている、音響装置。 (13) The acoustic device according to (11), wherein the controller includes a battery (battery 31).
　（１３）によれば、バッテリを備えたコントローラの加重をユーザの一方の肩で受けることができる。 According to (13), the weight of the controller equipped with the battery can be received by one shoulder of the user.
　（１４）の音響装置は、（１）乃至（１３）のいずれか１の音響装置において、
　前記電気音響変換素子を収容する第１エンクロージャ（ドライバケーシング１１２２）と、
　前記第１エンクロージャを収容する第２エンクロージャ（ユニットケーシング１１１）と、を更に有し、
　前記第１エンクロージャは、前記電気音響変換素子との間に第１共鳴室（第１共鳴室４１）を形成し、
　前記第２エンクロージャは、前記第１エンクロージャとの間に第２共鳴室（第２共鳴室４２）を形成し、
　前記第１エンクロージャには、前記第１共鳴室と前記第２共鳴室とを互いに連通させるポート（ポート１１２２ｃ）が設けられている、音響装置。 (14) The acoustic device according to any one of (1) to (13),
A first enclosure (driver casing 1122) that houses the electroacoustic transducer;
A second enclosure (unit casing 111) for housing the first enclosure;
The first enclosure forms a first resonance chamber (first resonance chamber 41) with the electroacoustic transducer,
The second enclosure forms a second resonance chamber (second resonance chamber 42) with the first enclosure,
The acoustic device, wherein the first enclosure is provided with a port (port 1122c) that allows the first resonance chamber and the second resonance chamber to communicate with each other.
　（１４）の音響装置は、第１共鳴室及び第２共鳴室により低音が増幅されるので、中低音再現性がより良い。 (14) Since the low sound is amplified by the first resonance chamber and the second resonance chamber, the sound device of (14) has better mid-low sound reproducibility.
　（１５）　（１４）の音響装置において、
　前記第２エンクロージャの内部には、前記第２共鳴室と連通する第３共鳴室（第３共鳴室４３）が形成されている、音響装置。 (15) In the acoustic device of (14),
The acoustic device, wherein a third resonance chamber (third resonance chamber 43) communicating with the second resonance chamber is formed inside the second enclosure.
　（１５）の音響装置は、第２共鳴室および第３共鳴室により低音が更に増幅されるので、中低音再現性が更に良い。 (15) Since the bass is further amplified by the second resonance chamber and the third resonance chamber, the mid-bass reproducibility is further improved.
　（１６）　（１５）の音響装置において、
　前記第２エンクロージャにおける前記第２共鳴室と前記第３共鳴室との連通部（内部空間４４）は、くびれている、音響装置。 (16) In the acoustic device of (15),
The acoustic device in which a communication portion (internal space 44) between the second resonance chamber and the third resonance chamber in the second enclosure is constricted.
　（１６）の音響装置は、第２共鳴室と第３共鳴室との連通部における空気の粘性の変化により低音が更に増幅されるので、中低音再現性が更に良い。 In the acoustic device of (16), the bass is further amplified by the change in the viscosity of the air in the communication portion between the second resonance chamber and the third resonance chamber, so that the mid-bass reproducibility is further improved.
１Ａ、１Ｂ、１Ｃ　イヤホン（音響装置）
１０Ａ、１０Ｂ　耳装着体
１０　耳装着体
１１　音響ユニット
　１１ａ　放音部
　１１ｂ　外周面
　１１１　ユニットケーシング（第２エンクロージャ）
　１１１ｂ　嵌合部
　１１１ｃ　後端
　１１１ｆ　フロント部
　１１１ｍ　中間部
　１１１ｒ　リア部
１１２　ドライバユニット
　１１２１　電気音響変換素子
　　１１２１ａ　振動板
　　１１２１ｂ　電気機械結合系
　１１２２　ドライバケーシング（第１エンクロージャ）
　　１１２２ａ　円筒部
　　１１２２ｂ　端板部
　　１１２２ｃ　ポート
１１３　プロテクタ
１１４　蓋
　１１４ａ　貫通孔
１２　キャップ（皮膚接触部材）
１３　バッフルチューブ（介在部材）
　１３ａ　先端部
　１３ｂ　端部
　１３ｃ　返し部
　１３ｄ　内周面
２０　紐状体
　２０Ａ　短尺部
　２０Ｂ　長尺部
　２０１　導線
２０２　半田付け
３０　コントローラ
　３１　バッテリ
　３２　無線モジュール
　　３２１　拾音部
　　３２２　通信部
　　３２３　操作部
　　３２４　制御部
　　３２３Ａ　オン／オフボタン
　　３２３Ｂ　増大ボタン
　　３２３Ｃ　減少ボタン
　３３　ケーシング
　　３３ａ　音入口
４１　第１共鳴室
４２　第２共鳴室
４３　第３共鳴室
４４　内部空間
５０　空気室
８０　耳
８５　入口
８４　外耳道
８６　内壁
　Ｓ　表面
　Ｓａ　外面
　Ｓｂ　外面
　Ｓｃ　外面 1A, 1B, 1C Earphone (Sound device)
10A, 10B Ear mounting body 10 Ear mounting body 11 Acoustic unit 11a Sound emitting part 11b Outer peripheral surface 111 Unit casing (second enclosure)
111b Fitting portion 111c Rear end 111f Front portion 111m Intermediate portion 111r Rear portion 112 Driver unit 1121 Electroacoustic transducer 1121a Diaphragm 1121b Electromechanical coupling system 1122 Driver casing (first enclosure)
1122a Cylindrical portion 1122b End plate portion 1122c Port 113 Protector 114 Lid 114a Through-hole 12 Cap (skin contact member)
13 Baffle tube (intervening member)
13a Front end portion 13b End portion 13c Return portion 13d Inner peripheral surface 20 String-like body 20A Short portion 20B Long portion 201 Conductor 202 Solder 30 Controller 31 Battery 32 Wireless module 321 Sound pickup portion 322 Communication portion 323 Operation portion 324 Control portion 323A ON / OFF button 323B Increase button 323C Decrease button 33 Casing 33a Sound inlet 41 First resonance chamber 42 Second resonance chamber 43 Third resonance chamber 44 Inner space 50 Air chamber 80 Ear 85 Inlet 84 Outer ear canal 86 Inner wall S Surface Sa Outer surface Sb Outer surface Sc outer surface

Claims (12)

  1. 　左右の耳にそれぞれ装着される一対の球形の耳装着体と、
    　両耳装着体を互いに連結する紐状体と、を有し、
    　前記紐状体は、前記耳装着体の表面から延びており、
    　前記耳装着体は、
    　音響ユニットと、皮膚接触部材と、介在部材と、を有し、
    　前記音響ユニットは、その放音部及び側部が前記皮膚接触部材で覆われており、
    　前記皮膚接触部材は、柔軟性、弾力性及び通気性を有し、且つ、音を透過させる部材であり、
    　前記介在部材は、前記皮膚接触部材と前記音響ユニットとの間に存在して、前記皮膚接触部材と前記音響ユニットとの間に空気室を形成し、
    　前記皮膚接触部材が外耳道に嵌まることにより、前記音響ユニットが当該外耳道の内壁から離して支持される、音響装置。     A pair of spherical ear attachments respectively attached to the left and right ears;
    A string-like body for connecting both ear wearing bodies to each other;
    The string-like body extends from the surface of the ear wearing body,
    The ear wearing body is:
    An acoustic unit, a skin contact member, and an interposition member;
    The acoustic unit has its sound emitting part and side part covered with the skin contact member,
    The skin contact member is a member having flexibility, elasticity and breathability, and transmitting sound,
    The interposition member exists between the skin contact member and the acoustic unit, and forms an air chamber between the skin contact member and the acoustic unit,
    An acoustic device in which the acoustic unit is supported away from the inner wall of the ear canal by fitting the skin contact member into the ear canal.
  2. 　前記一対の球形の耳装着体は、互いに同形状且つ同寸法である、請求項１の音響装置。 The acoustic device according to claim 1, wherein the pair of spherical ear wearing bodies have the same shape and the same size.
  3. 　前記皮膚接触部材は、スポンジ材からなる、請求項１又は２の音響装置。 The acoustic device according to claim 1 or 2, wherein the skin contact member is made of a sponge material.
  4. 　前記皮膚接触部材の外面は、前記耳装着体の表面の大部分を占める、請求項３の音響装置。 The acoustic device according to claim 3, wherein an outer surface of the skin contact member occupies most of a surface of the ear wearing body.
  5. 　前記介在部材は、前記音響ユニットに環装される柔軟な部材である、請求項１乃至４のいずれか１の音響装置。 The acoustic device according to any one of claims 1 to 4, wherein the interposition member is a flexible member that is wrapped around the acoustic unit.
  6. 　前記空気室は、前記音響ユニットの前記放音部と連通している、請求項５の音響装置。 The acoustic device according to claim 5, wherein the air chamber communicates with the sound emitting unit of the acoustic unit.
  7. 　前記空気室は、密閉空間である、請求項５の音響装置。 The acoustic device according to claim 5, wherein the air chamber is a sealed space.
  8. 　前記音響ユニットの軸方向における前記介在部材の一部が全周に亘って前記音響ユニットに接触している、請求項５乃至７のいずれか１の音響装置。 The acoustic device according to any one of claims 5 to 7, wherein a part of the interposed member in the axial direction of the acoustic unit is in contact with the acoustic unit over the entire circumference.
  9. 　前記紐状体は、導線を有するコードである、請求項１乃至８のいずれか１の音響装置。 The acoustic device according to any one of claims 1 to 8, wherein the string-like body is a cord having a conductive wire.
  10. 　前記紐状体の中間部には、コントローラが設けられている、請求項９の音響装置。 10. The acoustic device according to claim 9, wherein a controller is provided at an intermediate portion of the string-like body.
  11. 　前記コントローラは、
    　前記コードの長さ方向中心部をユーザの頸部の基部後方に配置して、前記一対の耳装着体を当該ユーザの左右の耳にそれぞれ装着した状態において、当該ユーザの一方の肩に載せ得るように、前記コードの長さ方向中心から片寄った位置に設けられている、請求項１０の音響装置。     The controller is
    The cord can be placed on one shoulder of the user in a state where the center portion in the longitudinal direction of the cord is arranged behind the base of the user's neck and the pair of ear wearing bodies are respectively attached to the left and right ears of the user. The acoustic device according to claim 10, wherein the acoustic device is provided at a position offset from a longitudinal center of the cord.
  12. 　前記一対の耳装着体は、両耳装着体同士を磁力で連結させるための磁性体を備えている、請求項１乃至１１のいずれか１の音響装置。 The acoustic device according to any one of claims 1 to 11, wherein the pair of ear mounting bodies includes a magnetic body for connecting both ear mounting bodies with a magnetic force.
PCT/JP2018/013516 2017-06-07 2018-03-30 Acoustic device WO2018225354A1 (en)

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WO2023230183A1 (en) * 2022-05-24 2023-11-30 Depaul Chancellor I Wearable wake up alarm system

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JPS6098792A (en) * 1983-11-04 1985-06-01 Matsushita Electric Ind Co Ltd Head phone
JPS6379500A (en) * 1987-05-30 1988-04-09 Sony Corp Earphone
JPH02250499A (en) * 1989-03-24 1990-10-08 Kyushu Hitachi Maxell Ltd Earphone
JPH03130700U (en) * 1990-04-10 1991-12-27
JPH0591584A (en) * 1991-09-30 1993-04-09 Toshiba Corp Earphone
JPH069293U (en) * 1992-07-10 1994-02-04 アイワ株式会社 Headphones and other operating mechanism
JPH0984169A (en) * 1995-09-11 1997-03-28 Arata Higuchi Earphone with holder and earphone holder

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CN110301139A (en) 2019-10-01
JPWO2018225357A1 (en) 2019-06-27
JP2019080338A (en) 2019-05-23
JP6500257B1 (en) 2019-04-17
WO2018225357A1 (en) 2018-12-13
JPWO2018225354A1 (en) 2019-06-27

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