Technical field
[0001]
　Technology disclosed herein relates to an acoustic output device and the sound guide device used by mounting on the ear of the listener.
Background technique
[0002]
　Reproducing apparatus or small acoustic transducer i.e. earphone for converting the acoustic signals electrical signal output from the receiver speaker that is close to the ear or ear drum to have been widely used. This type of sound reproduction apparatus, since emit sound as heard by the listener himself worn, are made available in a variety of environments.
[0003]
　Many of the earphones that are currently popular, has a shape that plugs into the ear of the listener. For example, earbud earphone are shaped to hook the ear of the listener. Further, canal type earphone ear hole (the external auditory canal: ear canal) is a deeply inserted in shape to be used for, many structurally sealed, since the sound insulation performance is relatively good, even slightly noisy place there is merit to enjoy the music.
[0004]
　Canal type earphone is generally a speaker unit for converting an electric signal into an acoustic signal, as a basic component a generally cylindrical housing that also serves as a sound tube (housing), speaker units for housing one end ( It is attached to the outside) of the ear canal. The housing, the radiation outlet to convey the eardrum is provided to emit air vibrations generated by the speaker unit into the ear canal. Further, the other end of the housing (insertion portion of the ear canal) is usually earpiece listener a shape that matches the external auditory canal when worn (removable component) is attached. For example, by arranging the sound tube obliquely from a position off-center of the housing, on which matches the housing to the cavum conchae, it is possible to arrange the sound tube to the ear canal entrance, the canal type earphone device proposals have been made (for example, refer to Patent Document 1).
[0005]
　Listener wearing the earphones, even while listening to the sound to be presented, for example, such as when the surrounding people spoke, it is necessary to listen ambient sound at the same time. However, most of the conventional earphone such as canal type, in the mounted state, it is extremely difficult for the listener to take listening to the ambient sound. This is because from the viewpoint of preventing leakage to the outside of improvement and playback sound of the playback sound quality, has become almost completely blocked structure of the ear hole. For example, walking, jogging, cycling, climbing, skiing, and when performing the sport in the open air and indoor, including a snowboard, at the time of the operation or navigation, can not I take listening to the ambient sound is a dangerous situation . In addition, at the time of communication or presentation, and can not take listening to the ambient sound, it leads to a decrease in services.
[0006]
　In addition, the conventional earphone is also the periphery of the people, for the listener's mounting state that appears to be blocking the ear canal, will be giving a hard impression that speak to the wearer of the earphone, the communication between people also it will be inhibit.
CITATION
Patent Document
[0007]
Patent Document 1: Japanese Patent No. 4709017
Summary of the Invention
Problems that the Invention is to Solve
[0008]
　The purpose of the technology disclosed herein is used by mounting on the ear of the listener, even while realizing hearing characteristics of the non-wearing state equivalent ambient sound, and outputs at the same time good acoustic information in the attached state it can, is to provide an excellent sound output apparatus and the sound guide device.
Means for Solving the Problems
[0009]
　Technology disclosed herein has been made in consideration of the above problems, techniques according to the first aspect,
　a sound generating unit disposed on the back of the listener's ears,
　one end the acoustic the other end is connected to the generator unit is arranged near the entrance ear canal of the listener to propagate sound the sound generating portion generates to the other end incorporates from said one end, and a sound guiding part of the hollow structure ,
an audio output device having a.
[0010]
　According to a second aspect of the technology disclosed herein, an acoustic output device according to the first aspect, further holding portion for holding the other end of the sound guide portion in the vicinity of the ear canal entrance of the listener It is provided.
[0011]
　According to a third aspect of the technology disclosed herein, the holding portion of the acoustic output device according to the second aspect is configured to engage the beads and chopped mark of the listener.
[0012]
　According to a fourth aspect of the technology disclosed herein, an acoustic output device according to the first aspect, further comprising a pinch portion by sandwiching the ear lobe of the listener attached to the ear of the sound output device ing.
[0013]
　According to a fifth aspect of the technology disclosed herein, the sound guide portion of the acoustic output device of the first aspect, provided at a portion to fold on the front side from the back side of the auricle of said listener is provided with a pinch portion of the opening and closing structure, the pinch portion is configured to sandwich the pinching force earlobe by using of returning to the closed position.
[0014]
　According to a sixth aspect of the technology disclosed herein, an acoustic output device of the first aspect, wherein by sandwiching the ear lobe of the listener with sound generating unit, attached to the ear of the sound generating unit further comprising a pinch for.
[0015]
　According to a seventh aspect of the technology disclosed herein, the sound output apparatus said that according to the first aspect, to prevent the other end of the sound guide part is inserted deeply into the ear canal of the listener It is further provided with a guard unit.
[0016]
　According to an eighth aspect of the technology disclosed herein, together with the holding portion of the acoustic output device according to the second aspect is engaged with the vicinity of the ear canal entrance of the listener (Pearl and chopped mark), the the sound guide portion fixed around the other end, is configured not deeply inserted into the ear canal.
[0017]
　According to a ninth aspect of the technology disclosed herein, an acoustic output device of the first aspect, and deformed depending on the action of external force, the other end of the sound guiding part of the listener further comprising a deformable portion to prevent being deeply inserted in the ear canal.
[0018]
　According to a tenth aspect of the technology disclosed herein, the sound guiding part of the sound output device according to the fifth aspect of the between the other end and the pinch portion, in accordance with the external force deformation and a deformable portion for.
[0019]
　According to the eleventh aspect of the technology disclosed herein, the flexible portion of the acoustic output device according to the tenth aspect of the said other end of the sound guiding part off folding a predetermined or more external force is applied It is configured to prevent be inserted deep into the ear canal of the listener.
[0020]
　According to a twelfth aspect of the technology disclosed herein, the flexible portion of the acoustic output device according to the tenth aspect of the said other end of the sound guiding part off folding a predetermined or more external force is applied thereby preventing deep being inserted it into the ear canal of the listener, it is possible to reconnect.
[0021]
　According to a thirteenth aspect of the technology disclosed herein, the flexible portion of the acoustic output device according to a tenth aspect of the second end of the sound guide part bent and an external force is applied is of the listener thereby prevented from being inserted deep into the ear canal, and is configured to recover when released from the external force to the original shape.
[0022]
　According to a fourteenth aspect of the technology disclosed herein, an acoustic output device according to the first aspect further comprises a earwax intrusion preventing section to the other end of the sound guiding part.
[0023]
　According to a fifteenth aspect of the technology disclosed herein, an acoustic output device of the first aspect, sound volume that is output to the ear canal from the other end in accordance with a change of the inner diameter of the sound guide portion further comprising a volume controller for adjusting.
[0024]
　According to a sixteenth aspect of the technology disclosed herein, the mute unit and the volume controller of the audio output device according to a fifteenth aspect of the surface is infested in the sound guide portion in response to being pressed by toggling, it is configured to perform the switching of the mute-on state and a mute-off state.
[0025]
　According to a seventeenth aspect of the technology disclosed herein, the volume controller of the audio output device according to a fifteenth aspect of the mute section appearing in the sound guide portion in response to the surface is pressed and becomes mute oN state, the surface is configured such that the mute portion to be released from the pressing becomes mute oFF state retracted from within the sound guide portion.
[0026]
　According to a eighteenth aspect of the technology disclosed herein, the volume controller of the audio output device according to a fifteenth aspect of the soft tube of the inserted taper structure on the sound guide portion, the soft tube comprises a ring-shaped volume adjusting unit for inserting the, by continuously changing the inner diameter of the soft tube according to the inserted position to the volume control unit is configured to set the volume continuously .
[0027]
　According to a nineteenth aspect of the technology disclosed herein, the volume controller of the audio output device according to a fifteenth aspect of the elastically deformable portion which constitutes a part of the side surface of the sound guide portion, wherein comprising a rotatably disposed a cam to abut to the elastic deformation portion, it protrudes the elastic deformation portion in the sound guide portion in accordance with a change in the rotation angle of the cam, so as to set the volume continuously It is configured.
[0028]
　Also, twentieth aspect of the technology disclosed herein,
　one end is disposed near the ear canal entrance of the other end the listener is connected to the sound generator, the sound the sound generating unit generates propagates to the other end incorporates from said one end, and a sound guiding part of the hollow structure,
　the other end of the sound guide portion, a holding portion for holding around the ear canal entrance of the listener
in sound guide apparatus comprising is there.
Effect of the Invention
[0029]
　According to the technique disclosed herein, it is used by mounting on the ear of the listener, even while realizing hearing characteristics of the non-wearing state equivalent ambient sound, and outputs at the same time good acoustic information in the attached state can, it is possible to provide an excellent sound output apparatus and the sound guide device.
[0030]
　Note that the effect described herein is merely illustrative, the effect of the present invention is not limited thereto. Further, the present invention is, in addition to the above effects, in some cases exhibit a further additional effect.
[0031]
　Other objects, features and advantages of the technique disclosed herein, will become apparent from the following detailed description based on embodiments and the accompanying drawings described below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032]
[1] Figure 1 is a front view of the sound output apparatus 100 (for the left-ear) in accordance with an embodiment of the technology disclosed herein.
FIG. 2 is a perspective view of an acoustic output device 100 (for the left-ear) in accordance with an embodiment of the technology disclosed herein.
FIG. 3 is a diagram sound output apparatus 100 of the ear canal open showed how to output the sound waves to the ear of the user.
[4] FIG. 4 is a view showing a modified example of the sound output apparatus 100 shown in FIGS. 1 and 2 (front view).
FIG. 5 is a diagram showing a modification of the sound output apparatus 100 shown in FIG. 1 and FIG. 2 (a perspective view).
FIG. 6 is a diagram showing a modification of the sound output apparatus 100 shown in FIG. 1 and FIG. 2 (a perspective view).
[7] FIG. 7 is a diagram showing a closed state of the pinch portion 123 of the sound guide portion 120.
[8] FIG. 8 is a diagram showing the open state of the pinch portion 123 of the sound guide portion 120.
[9] FIG. 9 is a diagram showing a state of mounting the sound output apparatus 100 to the left ear of the listener.
[10] FIG 10 is a diagram showing a state in which viewing the sound generation unit 110 from the front.
[11] FIG 11 is a diagram showing an A-A cross section of the sound generator 110.
[12] FIG 12 is a diagram illustrating the appearance of the sound output apparatus 100 which includes a sound generator 110 having an elliptical shape.
[13] FIG 13 is a diagram illustrating the appearance of the sound output apparatus 100 which includes a sound generator 110 of the half-moon shape.
[14] FIG 14 is a diagram illustrating the appearance of the sound output apparatus 100 which includes a sound generator 110 having a shape conforming to the ear back shaped surface of the side edges humans.
FIG. 15 is an acoustic output device 100 shown in FIG. 14 is a diagram showing a state mounted on the left ear of the appropriate listener.
[16] FIG 16 is a diagram acoustic 1600 emitted showed how to reach the eardrum 1602 propagates through the ear canal 1601 from the other end 122 of the sound guide portion 120.
[17] FIG 17 is a diagram showing the five sites were defined in the longitudinal direction of the sound guide portion 120.
[18] FIG 18 is a diagram illustrating the applicable tubular shape the sound guide portion 120.
[19] FIG 19 is a diagram illustrating how the sound guide portion 120 is attached to the left ear of the listener through the other lower edge of the earlobe.
[20] FIG 20 is a diagram illustrating how the sound guide portion 120 is attached to the left ear of the listener through the other lower edge of the earlobe.
[21] FIG 21 is a diagram illustrating how the sound guide portion 120 is attached to the left ear of the listener through the other lower edge of the earlobe.
[22] FIG 22 is a diagram holding unit 130 showing a state that secure near the entrance of the ear canal and the other end 122 of the sound guide portion 120.
[23] FIG 23 is a diagram holding unit 130 showing a state that secure near the entrance of the ear canal and the other end 122 of the sound guide portion 120.
[24] FIG 24 is a diagram showing a configuration example in which a ring-like holding portion 130 supports the other end 122 of the sound guide portion 120.
[25] FIG. 25 was a hollow structure can capture the ambient sound is a diagram showing a configuration example of a holding portion 130 of the other ring.
FIG. 26 is a diagram showing a configuration example of a holding portion 130 of the oval fabricated of a flexible material.
[27] FIG 27 is a diagram showing a state mounted on the left ear of the listener the holding portion 130 shown in FIG. 26.
FIG. 28 is a diagram showing a state viewed holder 130 configured to conform the shape to the shape surface of the beads and chopped mark space individual ear from the front.
[29] FIG 29 is a diagram of the holding portion 130 shown in FIG. 28, showing a state attached to the left ear of the listener.
FIG. 30 maintains the shape is a diagram showing an internal configuration of the holding portion 130 with a moderate elasticity.
[31] FIG 31 is a diagram showing a state wearing the holder 130 which combines the role of guard eardrum to the ear of the user.
FIG. 32 is a diagram showing a state wearing the holder 130 which combines the role of guard eardrum to the ear of the user.
[33] FIG 33 can serve to guard the tympanic membrane, it is a diagram showing a configuration example of a holding portion 130 of the other ring.
[34] FIG. 34 is configured as a separate part, a diagram showing a configuration example of the opening and closing operation can pinch part 123 has a spring property.
[35] FIG. 35 is configured as a separate part, a diagram showing a configuration example of the opening and closing operation can pinch part 123 has a spring property.
FIG. 36 is configured as a separate component, is a diagram showing another configuration example of the switching operation has a spring property capable pinch 123.
FIG. 37 is configured as a separate component, is a diagram showing another configuration example of the switching operation has a spring property capable pinch 123.
[38] FIG 38 is a diagram showing a detailed internal structure of the pinch portion 123 shown in FIGS. 36 and 37.
[39] FIG 39 is a diagram showing a pinch force generated by twisting of the portion A of the sound guide portion 120.
[Figure 40] Figure 40 is a diagram showing a pinch force generated by twisting of the portion A of the sound guide portion 120.
FIG. 41, in the sound output device 100 mounted on the left ear of the listener, a diagram pinching force 4101 and 4102 showed the appearance caused by torsion of the A portion of the sound guide portion 120.
FIG. 42 is a diagram showing a structure for generating a pinch force at the A portion of the sound guide portion 120.
[43] FIG 43 is a diagram showing a configuration example of a mechanism for attaching the sound generating unit 110 to the earlobe.
[44] FIG 44 is a diagram showing another configuration example of a mechanism for attaching the sound generating unit 110 to the earlobe.
[Figure 45] Figure 45 is a diagram showing a configuration example of the deformable section 124.
[46] FIG 46 is a diagram showing a configuration example of the deformable section 124.
[47] FIG 47 is a diagram showing a configuration example of the deformable section 124.
[Figure 48] Figure 48 is a diagram showing a state where the other end 122 of the sound guide portion 120 attaching the earwax intrusion prevention portion 4801 of the removable.
FIG. 49 is a diagram showing a configuration example of earwax intrusion prevention 4801.
[Figure 50] Figure 50 is a diagram showing an external configuration of an acoustic output device 100 having a volume control unit 5000 C portion of the sound guide portion 120.
[51] FIG 51 is a view showing a sectional configuration example of the volume control unit 5000 to realize the mute function (mute OFF state).
[Figure 52] Figure 52 is a view showing a sectional configuration example of the volume control unit 5000 to realize the mute function (mute-on state).
[53] FIG 53 is a diagram showing a cross-sectional configuration example of realizing the mute function (with mute volume control) volume control unit 5000.
[Figure 54] Figure 54 is a diagram illustrating another cross-sectional configuration example of the volume control unit 5000 to realize the mute function (mute OFF state).
[Figure 55] Figure 55 is a diagram illustrating another cross-sectional configuration example of the volume control unit 5000 to realize the mute function (mute-on state).
[Figure 56] Figure 56 is a diagram illustrating another cross-sectional configuration example of realizing the mute function (with mute volume control) volume control unit 5000.
[Figure 57] Figure 57 is, by continuously changing the inner diameter of the sound guide portion 120 is a diagram showing a sectional configuration example of the volume control unit 5000 to realize a continuous volume adjustment.
[Figure 58] Figure 58 is, by continuously changing the inner diameter of the sound guide portion 120 is a diagram showing a sectional configuration example of the volume control unit 5000 to realize a continuous volume adjustment.
[Figure 59] Figure 59 is, by continuously changing the inner diameter of the sound guide portion 120 is a diagram showing a sectional configuration example of the volume control unit 5000 to realize a continuous volume adjustment.
[Figure 60] Figure 60 is, by continuously changing the inner diameter of the sound guide portion 120, is a diagram illustrating another cross-sectional configuration example of the volume control unit 5000 to realize a continuous volume adjustment.
[Figure 61] Figure 61 is, by continuously changing the inner diameter of the sound guide portion 120, is a diagram illustrating another cross-sectional configuration example of the volume control unit 5000 to realize a continuous volume adjustment.
[Figure 62] Figure 62 is, by continuously changing the inner diameter of the sound guide portion 120, is a diagram illustrating another cross-sectional configuration example of the volume control unit 5000 to realize a continuous volume adjustment.
[Figure 63] Figure 63 is a diagram illustrating the acoustic characteristics of the sound output apparatus 100 of the case where the sound generating portion 110 in the dynamic speaker.
[Figure 64] Figure 64 is a diagram illustrating a frequency characteristic of the signal applied to the input signal to the sound output apparatus 100.
[FIG. 65] FIG. 65 is a diagram illustrating the acoustic characteristics (frequency level characteristics) of the sound output apparatus 100 which has improved the signal processing shown in FIG. 64.
[Figure 66] Figure 66 is a diagram illustrating a resonance effect (quarter-wave resonance of) one side open by the sound guide portion 110.
[Figure 67] Figure 67 is a diagram illustrating resonance effect of (1 + quarter wave resonance of) one side open by the sound guide portion 110.
[Figure 68] Figure 68 is a diagram illustrating a resonance effect (2 + quarter wave resonance of) one side open by the sound guide portion 110.
[Figure 69] Figure 69 is a diagram illustrating the acoustic characteristics of the sound guide part 120 which has received the influence of the resonance of the side opening (Frequency level characteristics).
[Figure 70] Figure 70 is a diagram showing a configuration example of a suppressing sound guide portion 120 a peak characteristic of the sound pressure frequency due to the resonance.
[Figure 71] Figure 71 is a diagram showing a configuration example of a suppressing sound guide portion 120 a peak characteristic of the sound pressure frequency due to the resonance.
[Figure 72] Figure 72 is a diagram showing a configuration example of an acoustic device comprising a sound hole 7201.
[Figure 73] Figure 73 is a diagram showing a configuration example of an acoustic device comprising a gas chamber 7301.
[Figure 74] Figure 74 is a diagram illustrating the acoustic characteristics (frequency level characteristics) in the case of using the inhibiting sound guide portion 120 a peak characteristic of the sound pressure frequency due to the resonance.
[FIG. 75] FIG. 75 is a diagram showing a contact state between the ears of the sound output apparatus 100 shown in FIG. 9 (cavum concha of the bottom, Mimiura shaped surface).
[FIG. 76] FIG. 76 shows a state of mounting the sound output apparatus 100 which combines the matching sound generating unit 110 to the holder 130 and Mimiura shaped surface conforming to the shape of the bottom of the cavity of the concha to the left ear of the listener it is a diagram showing a.
[Figure 77] Figure 77 is a mounted state shown in FIG. 76 is a diagram showing a state in which viewing the holder 130 and the sound generating unit 110 from the front of the wearer.
DESCRIPTION OF THE INVENTION
[0033]
　It will be described in detail embodiments of the technology disclosed herein with reference to the drawings.
[0034]
A. Basic Structure
　The Figure 1 and Figure 2, according to an embodiment of the technology disclosed herein, shows the configuration of a sound output device 100 used by mounting on the ear of the listener. However, Figure 1 is a front view of an acoustic output device 100, FIG. 2 is a perspective view viewing the sound output apparatus 100 from the left side. Further, the sound output apparatus 100 shown in FIGS. 1 and 2 is configured to be worn on the left ear, the sound output device for the right ear attachment (not shown) to this configured symmetrically It is to be understood that there.
[0035]
　The other end sound output apparatus 100 shown in FIGS. 1 and 2, a sound generator 110 for generating a sound, a sound guide portion 120 for capturing a sound generated from the sound generating portion 110 from one end 121, a sound guide portion 120 and a holding portion 130 for holding at around 122. Sound guide portion 120 has an inner diameter of a hollow tubular material 1-5 millimeters, both ends are both open ends. One end 121 of the sound guide unit 120 is a sound input hole of sound generated from sound generating unit 110, the other end 122 is made to the sound output holes. Thus, by one end 121 is attached to the sound generating unit 110, the sound guide 120 has a one side open.
[0036]
　As described later, the holding portion 130, near the entrance of the ear canal (e.g., beads and chopped mark) engage with, and that the audio output hole of the other end 122 of the sound guide portion 120 faces the back side of the ear canal, sound the guide portion 120 supports near its other end 122. The outer diameter of at least near the other end 122 of the sound guide portion 120 is formed so as to be much smaller than the inner diameter of the ear canal. Therefore, even when the other end 122 of the sound guide portion 120 is held in the vicinity of the entrance of the ear canal by holding unit 130, it does not block the ear canal of the listener. In other words, the ear canal is open. Sound output apparatus 100 is different from the conventional earphone, it can be said that "the ear canal open type".
[0037]
　The holding section 130, even while holding the sound guide portion 120 has an opening 131 for opening the ear canal entrance (ear hole) to the outside world. In the example shown in FIGS. 1 and 2, the holding portion 130 is a ring-shaped structure, so that in conjunction with near the other end 122 of the sound guide portion 120 only bar-shaped support member 132, a ring-like structure all other portions of the opening 131. As described later, the holding portion 130 is not limited to the ring-like structure, if a hollow structure may be any shape capable of supporting the other end 122 of the sound guide portion 120.
[0038]
　Sound guide portion of the tubular 120, when incorporated into the tube sound generated from the sound generating portion 110 from one end thereof 121, and propagates the vibration air, the holding portion 130 and the other end 122 that is held near the entrance of the ear canal by radiating towards the ear canal from, tell the eardrum.
[0039]
　As described above, the holding portion 130 for holding the vicinity of the other end 122 of the sound guide 120 has an opening 131 for opening the entrance of the ear canal (ear hole) to the outside world. Therefore, even when wearing the audio output device 100, it does not block the listener ear holes of. Listener, while wearing the audio output device 100 is listening to sound output from the sound generation section 110 may also be fully listen to ambient sound through the opening 131.
[0040]
　Further, the sound output apparatus 100 according to this embodiment has been opened ear hole, it is possible to prevent leakage to the outside of the sound generated from the sound generation unit 110 (playback sound). Because, mounted to face the back near the entrance of the other end 122 is the ear canal of the sound guide portion 120, the air vibration of sound generated from the radiating near the eardrum, to reduce the output of the audio output unit 100 even if it is because it is possible to obtain a sufficient sound quality.
[0041]
　Also, the directivity of the air vibrations emitted from the other end 122 of the sound guide portion 120 also contributes to the prevention of sound leakage. Figure 3 is the ear canal open sound output apparatus 100 indicates a state of outputting the sound waves to the ear of the user. Air vibration is radiated from the other end 122 of the sound guide portion 120 toward the interior of the ear canal. Ear canal 300 is a hole that ends the ear canal entrance 301 inside the beginning tympanic membrane 302, typically a length of about 25-30 mm. Ear canal 300 is a closed space in which the tubular. Thus, air vibrations emitted toward the back of the ear canal 300 from the other end 122 of the sound guide 120, as indicated by reference numeral 311, propagates directional I than to the eardrum 302. The air vibrations from the increased sound pressure in the ear canal 300, and especially improved low frequency sensitivity (gain). On the other hand, outer or external ear canal 300 is open space. Thus, air vibrations emitted outside the ear canal 300 from the other end 122 of the sound guide 120, as indicated by reference numeral 312, there is no directionality in the outside world, sharply attenuated.
[0042]
　It will be described with reference to FIGS. 1 and 2 again. Sound guide portion 120 of the tubular in the middle portion, and has a bent shape folded back from the rear side of the auricle on the front side. The bent portion has a pinch portion 123 having a closing structure, it is possible to pinch the ear lobe is generated pinch force, it will be described later for details.
[0043]
　Also, the sound guide 120, the other end 122 which is disposed near the entrance of the ear canal, between the pinch portion 123 which is bent further includes a deformable portion 124. Deformation unit 124 deforms the excessive external force, although do not get behind the ear canal than necessary the other end 122 of the sound guide 120, it will be described later for details.
[0044]
　4 to 6 show a modification of the sound output apparatus 100 shown in FIGS. However, Figure 4 is a front view of an acoustic output device 100, FIG. 5 is a perspective view viewing the sound output apparatus 100 from the left side. 6 is a perspective view as viewed from a direction the rear side of the sound generation portion 110 is visible. The same elements as the sound output apparatus 100 shown in FIGS. 1 and 2 are denoted by the same reference numbers.
[0045]
　In the sound output apparatus 100 shown in FIGS. 1 and 2, the sound guide unit 120 is composed of a prismatic tubular material. In contrast, the sound guide part 120 of the sound output apparatus 100 shown in FIGS. 4 to 6 is composed of a cylindrical tube. Member used for the sound guide 120, tubular, that is, if a hollow structure capable of propagating air vibration, shape is arbitrary.
[0046]
　As described later, sound generating unit 110, since the use of sound elements such as a speaker to produce the sound pressure changes, pressure changes in the housing of the sound generator 110 is caused during sound. As shown in FIG. 6, at least one exhaust hole 601 for the case where high pressure is generated in the housing is formed in the rear side of the housing. Also, the code in the sound generating unit 110, for inputting an audio signal from the music player and a smart phone, audio player, such as a tablet terminal (not shown) or a receiver for receiving a radio signal from the audio reproduction device (not shown) 602 are connected.
[0047]
B. Mounting mechanism of the ear
　audio output device 100, an intermediate portion of the sound guide portion 120 has a bent shape folded back from the rear side of the auricle on the front side. The bent portion has a pinch portion 123 having a closing structure, by using the pinch force generated by the pinch portion 123, so as to sandwich the ear of the listener in sound guide unit 120, the sound output apparatus 100 it can be attached to the listener's ear.
[0048]
　The Figure 7 shows a closed state of the pinch portion 123, in FIG. 8 shows the open state of the pinch portion 123. Further, in FIG. 9 shows a state mounted to the left ear of the listener a sound output apparatus 100 according to this embodiment.
[0049]
　As can be seen from FIGS. 7 and 8, the sound guide portion 120 of the tubular has a closing structure that is bent at the pinch portion 123. Then, the pinch portion 123 of such open position as shown in FIG. 8, a pinch force of returning to the closed position shown in FIG. 7 is generated.
[0050]
　As shown in FIG. 9, the holding portion 130 for supporting the sound guide portion 120 near the other end 122 is preferably in contact with the bottom surface of the cavity of the concha, by engagement with the tragus and chopped mark 901, the ear canal It is mounted near the entrance. The acoustic generating unit 110 for coupling to one end 121 of the sound guide portion 120 is disposed on the back side of the auricle 902. Then, as indicated by reference numbers 903 and 904, a pinch force for returning the sound guide portion 120 which is open to the closed position is generated by the pinch portion 123, sound generator 110 is pressed against the backside surface of the pinna It is, as sound guide portion 120 which is bent as shown to sandwich the ear (ear lobe) 902, audio output device 100 is attached to the left ear.
[0051]
　For attachment to the ear of the sound output apparatus 100, the sound guide portion 120 may be sandwiched anywhere pinna 902. However, the better to pinch the ear lobe portion of the under auricle half flat and simple shapes, wider contact area at the time of closing, it is possible to firmly hold even a small pinching force, preferably. If the pinch force is small, the listener when wearing it is not necessary feel the pain, it can withstand long-term use.
[0052]
　Further, since the ear lobe is relatively small, the distance from the sound generation section 110 to be installed on the rear side of the auricle to reach the entrance of the ear canal through folded back end of the earlobe is short, the amount corresponding to the sound guide portion 120 It is less need length. By the entrance of the ear canal to pass by folding where the shortest, it is possible to make the length of the sound guide portion 120 to the shortest distance. The length of the sound guide portion 120 is, for example, about 40 millimeters. When the short length of propagating acoustic, since sound captured from one end 121 of the sound generating portion 110 decreases the attenuation until the output from the other end 122, it is possible to reduce the output of the sound generator 110 .
[0053]
　In contrast, an attempt to hold the upper half of the auricle in the sound guide portion 120 of the closing structure (not shown), the sound guiding tube 120 the other end 122 is fixed near the entrance of the ear canal, towards the outside of the auricle Te concha, antihelix, scapha, in the order of the helix, must pass over the complicated uneven shape caused by the shape of the auricle cartilage. That is, an extremely small contact area of ​​the sound guiding tube 120 and the pinna surface during closing, it becomes unstable and nipped at the same pinch force. Further, since the wide top half of the pinna as compared to ear lobe, the distance from the sound generation section 110 to be installed on the rear side of the auricle to reach the entrance of the ear canal passes over helix is ​​long. Because the composed amount corresponding sound guiding tube 120 is also long, attenuated before sound generated from sound generating unit 110 is emitted into the ear canal, or it is necessary to increase the output of the sound generator 110. As mentioned in addition, in comparison with the earlobe, the size of the helix of the upper half of the pinna large individual differences, when the upper half of the auricle attempts to pinching, it becomes necessary to adjust the length of the sound guide portion 120 Therefore, it is cumbersome.

The scope of the claims
[Claim 1]
　A sound generating unit disposed on the back of the listener's ear,
　is disposed near the ear canal entrance of the other end the listener with one end connected to the sound generator, the sound generating unit generates the acoustic propagates to the other end incorporates from said one end, and a sound guiding part of the hollow structure,
the sound output device comprising a.
[Claim 2]
　Further comprising a holding portion for holding the other end of the sound guide portion in the vicinity of the ear canal entrance of the listener,
acoustic output device according to claim 1.
[Claim 3]
　The holding portion engages the beads and chopped mark of the listener,
acoustic output device according to claim 2.
[Claim 4]
　Further comprising a pinch portion for mounting on the ear of the sound output device by sandwiching the ear lobe of the listener,
acoustic output device according to claim 1.
[Claim 5]
　The sound guide part is provided with a pinch portion of the opening and closing structure disposed in a portion to fold on the front side from the back side of the auricle of the listener, using the pinching force the pinch portion attempts to return to the closed position sandwiching the earlobe Te,
acoustic output device according to claim 1.
[Claim 6]
　By sandwiching the ear lobe of the listener with the sound generating unit, further comprising a pinch portion for mounting on the ear of the sound generator,
an acoustic output device according to claim 1.
[Claim 7]
　Further comprising a guard portion for preventing the other end of the sound guiding part is inserted deeply into the ear canal of the listener,
acoustic output device according to claim 1.
[8.]
　The holding portion is configured to engage with the vicinity of the ear canal entrance of the listener (Pearl and chopped mark), the sound guiding part fixed near the other end, so as not deeply inserted into the ear canal,
to claim 2 sound output device according.
[Claim 9]
　Deformed in response to the action of an external force, the other end of the sound guiding portion further comprises a deformed portion that prevents deep being inserted it into the ear canal of the listener,
acoustic output device according to claim 1.
[Claim 10]
　The sound guide portion, between the other end and the pinch portion, and a deformable portion that deforms in response to the action of an external force,
the acoustic output device according to claim 5.
[Claim 11]
　The flexible portion prevents the second end of the sound guiding part off folding a predetermined or more external force is applied is inserted deeply into the ear canal of the listener,
acoustic output device according to claim 10.
[Claim 12]
　The flexible portion is configured to prevent the second end of the sound guiding part off folding a predetermined or more external force is applied is deeply inserted into the ear canal of the listener, it is possible to reconnect,
claim 10 sound output device according to.
[Claim 13]
　The flexible portion, together with the other end of the sound guide part bent and an external force is applied to prevent deep being inserted it into the ear canal of the listener, based on when released from the external force
to restore the shape,
wherein sound output device according to claim 10.
[Claim 14]
　Further comprising an earwax intrusion preventing section to the other end of the sound guide portion,
the acoustic output device according to claim 1.
[Claim 15]
　Further comprising a volume control unit for adjusting the sound volume that is output to the ear canal from the other end in accordance with a change of the inner diameter of the sound guide unit,
the acoustic output device according to claim 1.
[Claim 16]
　The volume control unit, by toggling the mute section infested in the sound guide portion in response to the surface is pressed, to switch the mute-on state and a mute-off state,
the acoustic of claim 15 output device.
[Claim 17]
　The volume control unit, the surface of the mute section in the sound guiding part is to mute-on state appearing in response to being pressed, the surface of said mute section to be released from the pressed from within the sound guide portion evacuation to become mute oFF state,
the acoustic output device according to claim 15.
[Claim 18]
　The volume control unit, a soft tube of the inserted taper structure on the sound guide portion, wherein with the annular volume adjusting unit for inserting the soft tube, the soft tube according to the inserted position to the volume control section of the the continuously changing the inner diameter, set the volume continuously,
the acoustic output device according to claim 15.
[Claim 19]
　The volume control unit is provided with elastically deformable portion which constitutes a part of the side surface of the sound guide portion, rotatably disposed a cam to abut to the elastic deformation part, the change of the rotational angle of the cam the elastic deformation portion protrudes into the sound guide unit, set the volume continuously in accordance with the
sound output device according to claim 15.
[Claim 20]
　One end of which is disposed near the ear canal entrance of the other end the listener is connected to the sound generator section, propagating sound the sound generating portion generates to the other end incorporates from said one end, the sound of a hollow structure and the conductive portion,
　a holding portion for holding the other end of the sound guiding part in the ear canal near the entrance of the listener's
sound guide device comprising a.