JP2017220794A - Ear pad and earphone with the pad, ear training device for improving hardness of hearing, and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ear pad, an earphone with the pad, an ear training device for improving hardness of hearing, and a method, capable of ensuring a sound way even when a discharge sound port is touched to an inner wall due to pushing of the ear pad or is blocked.SOLUTION: An ear pad is formed in a hollow cylindrical shape with an elastic material of a soft synthetic resin such as a silicon rubber, a rubber, or polypropylene. In the ear pad, a plurality of pleat-like noise insulation walls 50a to 50e made from a material similar to that of an external periphery surface is integrally provided in a ring shape with a predetermined interval in an axial direction. In each of the noise insulation walls, a noise insulation wall 50a in the most tip side has a diameter smaller than that of the other noise insulation wall, and the other noise insulation walls have the same diameter. By being mounted to an external acoustic meatus, a discharge sound pass 52 communicating the external acoustic meatus with the hollow cylindrical part of the ear pad so as to ensure a sound way in a state where a discharge sound port 46 of the ear pad contacts with an inner wall of the external acoustic meatus and is blocked is formed at the circumference of the discharge sound port in the noise insulation wall on the most tip side.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an ear pad, an earphone including the pad, and an ear training apparatus and method for improving hearing loss. More specifically, the present invention is mainly used for a hearing-impaired deaf person. If the deaf person is a mild deaf person for several hours a day. This technique relates to technology that improves hearing loss by using it for several years even for people with severe hearing loss for several years.

  Recently, the number of people listening to music on mobile phones, smartphones, etc. has increased, and since it is difficult to listen to sounds in cars such as trains, it has become a habit of listening to high volumes, so it is often deaf regardless of age or age. It has occurred. In addition, the current situation is that it is very difficult to treat once the hearing loss, including hearing loss due to aging, from childhood hearing loss. Therefore, when the cause of the hearing loss is investigated, it has been found that there are some causes in what is called an ear pad attached to the tip of an earphone attached to a device for listening. In other words, such ear pads are available in several sizes that fit the size of the listener's ear hole, but they are not perfect, and depending on individual differences, they may not fit and sound may leak outside. And it becomes a seed for complaints. For this reason, it will be strongly attached to the hole in the ear, but it may cause pain in the ear, but there is no sound insulation due to sealing and the sound insulation performance is low, so the surrounding noise and higher volume than that There is a problem in that the situation of listening to mixed sounds such as music and phone calls tends to be sensitive to hearing loss due to the adverse effects of loud sounds.

  As ear pads used in the above devices, ear pads with low sound insulation of single-layer folds are the mainstream, and there are those provided with a number of sound insulation walls called folds on the outer peripheral surface of the main body. The ear pad proposed as Japanese Patent Laid-Open No. 2003-284177 (Patent Document 1) is no exception. This ear pad is detachably mounted in the ear canal, and is attached to the outer peripheral surface of the main body formed of a rubber material such as silicone rubber or an elastic material such as soft synthetic resin such as polypropylene in the shape of a hollow cylinder. A large number of sound insulation walls made of the same material are integrally provided in a ring shape with a predetermined interval in the axial direction, thereby having a soft wearability that does not stimulate the sensitive tactile sensation of the ear canal, and the shape and size of the ear canal Even if there is a difference, it has an effect of being able to respond flexibly.

Japanese Patent Laid-Open No. 2003-284177

  However, the earpad of Patent Document 1 has the advantage that the sound insulation walls are made of the same diameter, so that it fits closely when worn on the ear canal and can be heard well. The left and right ear shapes and the size of the ear holes are not fully compatible, and it is difficult to keep the ear canal sealed continuously by shifting the ear pads. In addition, in the earpad, if the sound emission port of the earpad touches the inner wall of the ear canal, it may be easily blocked due to its flexibility and the sound pressure may be lowered, making it difficult to ensure the sound path reliably. There was also a problem.

  By the way, (1) From the common knowledge of the medical industry, the medical community and society that deafness does not improve, the sound in the frequency band where the hearing loss is weak can be corrected so that it is easy to hear by increasing the sound pressure. Furthermore, the overall difference in hearing between the left and right ears can be corrected by sound pressure. (3) Also, the sound collection by the sound collector or the hearing aid microphone provided to the hearing impaired person and the open speaker that amplifies it. In the device composition of playback by, if any volume is increased, an oscillation loop by the microphone and speaker is generated, and it cannot be used as a device that resonates, so it cuts sounds below 500Hz and 2500Hz that tend to oscillate. Technology recognition that does not oscillate is established. (4) Since the existing earphone or speaker has no sound insulation, the surrounding noise can be heard and it is difficult to distinguish. As a result, hearing-impaired people who have a healthy frequency band who dislike hearing aids are noisy.

  Therefore, the inventor continues to listen to the reproduced modulated sound and the surrounding noise, which are not present in the natural body, because the ambient noise overlaps with the reproduced modulated sound composed for the reasons (1) to (4) above. As a result, the natural language intelligibility inherent in humans is lost, and hearing continues to listen to the modulated modulation sound and noise, resulting in loss of balance, deafness becoming more severe and deafening, and regular expensive replacement is necessary. , And the current situation that deafness is worsening. As a result, it was found that deafness can be improved, and the present invention has been completed.

  That is, this invention solves the conventional problems as described above, and improves the hearing loss by overturning the common knowledge of the medical community so far that "deafness is not improved, there is no cure", While maintaining the conventional sound insulation and flexibility, each person can cope with different shapes and size of the ear hole of the left and right ears of the individual, and can bite the inner wall of the ear canal well and make it difficult to shift. (Even if the size of the ear canal is different), the sealing of the ear canal can be maintained continuously, and the tone can be prevented from being damaged and not blocked. It is an object of the present invention to provide an ear pad, an earphone equipped with the pad, and an ear training device and method for improving hearing loss, which can ensure the sound path even if the sound path is closed.

  In order to achieve the above object, the invention described in claim 1 is detachably mounted in the ear canal, and is formed into a hollow cylinder with an elastic material such as rubber such as silicone rubber or soft synthetic resin such as polypropylene. The main body has a sound emitting port at the front end and an open port at the rear end in communication with the hollow interior, and a plurality of pleats made of the same material as the main body on the outer peripheral surface. The sound-insulating walls are integrally provided in a ring shape with a predetermined interval in the axial direction, and these sound-insulating walls are inclined toward the rear end side with respect to the central axis of the main body, and the wall thickness is directed toward the outer peripheral edge. When installed on the ear canal, the sound insulation wall that contacts the inner wall of the ear canal bends to the rear end side, and a sealed space is formed in the space between the adjacent sound insulation walls. To become In the earpad, the sound insulation wall of the sound insulation wall is smaller in diameter than the other sound insulation walls, and the other sound insulation walls have the same diameter, and the sound emission port of the main body contacts the inner wall of the ear canal when attached to the ear canal In order to ensure the sound path even when closed, a sound emission path that connects the inside of the ear canal and the hollow interior of the main body is formed around the sound emission opening in the sound insulation wall on the most advanced side. And

  According to a second aspect of the present invention, in the earpad according to the first aspect of the invention, the sound emission path extends radially outward from the inner peripheral edge of the sound emission port on the outer surface of the sound insulating wall on the foremost side and faces each other. Thus, the sound emitting groove is formed as a notch.

  The invention according to claim 3 is an earphone including the ear pad according to claim 1 or 2 at the tip of the earphone body.

  The invention according to claim 4 has the earphone according to claim 3 and a device main body connected to the earphone wirelessly or by wire, and the device main body includes at least an ear training switch for ear training and a hearing aid. A hearing-improving ear training device provided with a microphone and a sound collection switch. The invention according to claim 5 has an earphone jack provided with the earphone according to claim 3 and a main body provided with a receptacle into which the earphone jack can be attached. A hearing-improving ear training device provided with a hearing aid switch, a hearing aid microphone, and a sound collection switch.

  The invention according to claim 6 is a hearing loss improving ear training method performed using the hearing loss improving ear training device according to claim 4 or 5, wherein an ear pad of an earphone inserted into the ear canal of both ears or one ear is used. The outer edge of the sound insulation wall on the most advanced side contacts the inner wall of the ear canal and gradually fits along the outer edge of the other sound insulation wall so as to bend to the rear end side, maintaining sound insulation and wearability so that the inside of the ear canal is sealed.・ I turn on the ear tray switch for the earphone while it is secured and put it on, and continuously emit the unmodulated sound for several hours or months a day, thereby activating hearing and improving hearing. It is a method of ear training for improving hearing loss.

  This invention is as described above, and since the invention according to claim 1 has the above-described configuration, the displacement of the earphone is less likely to occur, the sound path is ensured, and the sound insulation by sealing the ear canal is achieved. To provide an ear pad with sound insulation that is similar to that of a JIS earplug. Can do. Further, the present invention is freed from the use of modulated sound, which is now common knowledge, and these are no longer necessary, and the surrounding noise can be cut by about 30 dB, so that all the above four problems can be solved. Moreover, even if the size of the external auditory canal is different, it is possible to sufficiently cope with it, and the sealing of the external auditory canal can be continuously maintained, and even if the ear pad is pushed in and the sound emission opening is blocked, the sound emission path can be secured by the sound emission path. . According to the second aspect of the present invention, since the sound emission path can be formed as a sound emission groove, the manufacturing is facilitated, and the sound quality is good without being adversely affected because it is provided as a pair opposite to each other. It will be a thing.

  The invention according to claim 3 can provide an earphone excellent in sealing property and wearability using the ear pad according to claim 1 or 2.

  The invention according to claim 4 or 5 can provide an improver that enables ear training using the earphone according to claim 3. In addition, if a music playback function is added to the improver, it will play 30Hz to 20kHz wideband sound that can fully utilize the human hearing ability, and the original music of the player who has abundant fluctuation components such as shinobue sound source as sound source. By adopting it, it is possible to listen to the ear training while listening for a long time or while doing something without suffering, and the effect that promotes the activated hearing and hearing improvement can be obtained. The invention according to claim 6 can perform ear training using the improver according to claim 4 or 5, and can bring about an expected effect on improvement of hearing loss, such as leading to hearing loss. it can.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which abbreviate | omits and shows a part of earphone code | cord | chord with the earphone with ear pad which is an example of embodiment of this invention with a box-type improvement device. It is an expanded sectional view of an earphone part same as the above. It is an expanded sectional view of an ear pad same as the above. It is an enlarged side view of an ear pad same as the above. It is the schematic which shows the state which mounted | wore the ear pad with the ear canal. It is hearing measurement data which shows the improvement example 1 of ear training. It is hearing measurement data which shows the improvement example 2 of an ear training. It is hearing measurement data which shows the improvement example 3 of an ear training. It is hearing measurement data which shows the improvement example 4 of an ear training. It is hearing measurement data which shows the improvement example 5 of an ear training. It is hearing measurement data which shows the improvement example 6 of ear training. It is hearing measurement data which shows the improvement example 7 of ear training.

  Hereinafter, a deafness improving device as a deafness improving ear training apparatus according to an embodiment of the present invention will be described with reference to the drawings.

<Example>
In FIG. 1, 1 shows the whole box-shaped improving device for a hearing impaired person having an earphone with an ear pad, and this improving device 1 is suitable for a sound-sensitive hearing person among hearing loss, It consists of a pair of earphone cords 3, 4 having a predetermined length. The earphone cord 3 is for one ear, and the earphone cord 4 is for both ears. Earphones 5 and 6 are provided at one end, and earphone jacks 7 and 8 are provided at the other end. In other words, the earphone 5 is an ear training for one ear (training aimed at raising the inherent “listening ability”, hereinafter abbreviated as “ear training”), and the earphone 6 is both earphones. It is an ear trayer horn at the time of ear. In the main body 2, 10 is a power switch, 11 is an ear switch, 12 is a sound collection switch, 13 is a volume up button, 14 is a volume down button, 15 is a microphone for the earphone 5, and 16 is a microphone for the earphone 6.

  The earphones 5 and 6 both have the same structure and the same function, and the details of one of the earphones 5 are as shown in FIG. That is, it has a hollow main body 25 having an insertion portion 22 with an opening 21 that is formed in a size that fits into the ear hole. The main body 25 is made of synthetic resin, has a substantially cylindrical shape that is circular when viewed from the side, has no opening other than having an opening 21 in the insertion portion 22, and has a sealed hollow portion inside. The insertion portion 22 is provided so as to protrude from the central portion of the side surface of the main body 25, and an ear pad 27 that is made of an elastic material such as rubber is closely attached to the tip portion of the body 25 and fits in any size ear hole (ear canal). It comes to be installed. The main body 25 is fitted with a half portion 25a on the ear pad 27 side and a half portion 25b on the opposite side, and a ring member 28 is interposed on the outer periphery of the half portion 25b, and accommodates electrical wiring and the like described later. One end widened portion of the tube body 29 is attached and integrated by fitting.

  A receiver 30 is provided in the main body 25 so as to be enclosed in a front holder 31 made of an elastomer. Here, the inner package shows a form in which it is fitted and fixed in a mold hole 32 formed in the front holder 31 as shown in the figure, but the form of the inner package is not limited to this. The front holder 31 closes the opening 21 so as to form an inner layer on the insertion portion 22 side of the main body 25, and the outer peripheral surface thereof is disposed in close contact with the half portion 25a. A sound emitting hole (not shown) is provided on the front surface of the receiver 30 facing the opening 21 side. A sound output hole 34 is formed in front of the sound output hole, and a sound output path 35 is formed in front of the sound output hole. A thin earwax prevention filter 36 made of a fine mesh mesh fiber is attached to the front surface of the sound emission path 35. Reference numeral 37 denotes a connection terminal provided in the receiver 30.

  The main body 25 is formed in a stepped shape so that the outer peripheral surface on the front end side gradually becomes a small diameter, and an annular locking recess 41 is formed on the outer peripheral surface slightly on the rear end side from the front end. An annular locking projection 42 formed on the inner peripheral surface of the rear end of the ear pad 27 is locked to the locking recess 41 by fitting, whereby the ear pad 27 is detachably attached to the front end portion of the main body 25. It will be in a state to be.

  As shown in FIGS. 3 and 4, the ear pad 27 is made of silicone rubber suitable for a living body and is detachably mounted in the external auditory canal. The ear pad 27 is formed in a hollow cylindrical shape at both ends of the front and rear ends. Is provided with an open main body 45. The main body 45 has an outer peripheral surface that is integrated in three steps from the front end side in the order of a small diameter portion, a medium diameter portion, and a large diameter portion. It consists of a hollow cylinder. A plurality of (five) thin-walled sound insulation walls 50 made of the same material as the main body 45 are integrally provided on the outer peripheral surfaces of the small diameter portion and the medium diameter portion of the main body 45 at equal intervals in the axial direction.

  These sound insulating walls 50 are provided at an angle of about 60 ° on the rear end side with respect to the central axis of the main body 45. And the one sound insulation wall 50a in the foremost side in a small diameter part has an outer diameter smaller than the other four sound insulation walls 50b-50e in a small diameter part and a medium diameter part. The reason why only the sound insulating wall 50a on the most advanced side is made small in diameter is as follows. In other words, since the inner wall of the ear canal of the ear hole gradually becomes narrower as it goes deeper, the sound insulation wall 50a having a small diameter on the most advanced side is in contact with the inner wall and maintains sound insulation, but it is somewhat small so It is easy, and it becomes difficult to come out with its own catch with respect to the force in the pulling direction. The remaining four sound insulation walls 50b to 50e are very soft and flexibly adhere to the unevenness of the inner wall of the ear canal and exhibit normal wearability while spreading outward. Therefore, the synergistic effect brought about by such a combination of one sound insulating wall 50a and four sound insulating walls 50b to 50e makes it difficult to come off while maintaining the target sound insulating property.

  In addition, sound emitting grooves 52, 52 are formed on the outer surface of the sound insulating wall 50a on the most distal side, extending radially outward from the inner peripheral edge of the sound emitting port 46, and facing each other, and are connected to the inner wall of the ear canal. Even in a state where the sound emission port 46 of the main body 45 is blocked by the contact, the sound path can be secured by communicating the inside of the external auditory canal and the hollow interior of the main body 45 so as to transmit the sound. It goes without saying that the sound emitting grooves 52, 52 are merely a preferable example, and other designs may be used as long as they have the same effect. Further, the sound insulating wall 50 is formed so as to gradually become thinner from the proximal end to the distal end. The reason why the thickness of the sound insulating wall 50 is reduced toward the outer peripheral edge is to keep the soft wearing ability required for the ear pad 27 without stimulating the sensitive tactile sense of the ear canal.

  Three sizes of SML are prepared for the ear pad 27 to cope with individual differences in the size of the ear canal of the wearer.

<Description of action>
In order to use the improvement device 1 as described above as an ear training for a binaural deaf person, for example, a pad having a higher sealing degree is selected from the ear pads 27 of the SML size, and the locking recess 41 of the earphones 5 and 6 is selected. The locking projections 42 are locked and fitted by fitting. Then, as shown in FIG. 1, the earphone jack 8 at the tip of the earphone cord 4 is inserted into the receptacle of the earphone cord 3, and the earphone jack 7 at the tip of the earphone cord 3 is inserted into the receptacle of the device body 2.

  After that, when the earphone 5 and the earphone 6 are inserted into the ear canal with the tip side of the ear pad 27 facing the user's ear as shown in FIG. 5, the outer peripheral edge of the sound insulating wall 50 of the ear pad 27 comes into contact with the inner wall of the ear canal. The sound insulation wall 50 of the ear pad 27 that is in contact with the ear pad 27 is inserted to a position that gradually fits so as to bend (fall down) toward the rear end side. At this time, since the sound insulating wall 50a having the small diameter on the most advanced side and the other sound insulating walls 50b to 50e that follow are wedge-shaped as shown in the figure, the inner wall of the external auditory canal is deformed to be caught in the outer peripheral edge of the sound insulating wall 50, The outer peripheral edge of the sound insulation wall 50 is caught by small irregularities on the inner wall of the ear canal, and a force that makes it difficult to come out is generated. Therefore, the mounting becomes extremely stable.

  In addition, in this mounted state, the outer peripheral edge of the bent sound insulating wall 50 is in contact with the inner wall of the ear canal at each pinpoint, and a sealed space is formed between the adjacent sound insulating walls. As a result, the back side of the ear canal becomes sealed with respect to the outside, and a number of sealed spaces are formed on the back side, so that the sealing and sound insulating properties are excellent. Therefore, external sound can be effectively attenuated by the sealed space.

  Next, the power switch 10 is turned on, and the ear tray switch 11 is turned on (the sound collecting switch is turned off at this time), and the volume buttons 13 and 14 are used to adjust the volume so that the noise of the reproduced sound can be heard. adjust. Further, when the ear train switch 11 is turned on, the receiver 30 starts to operate, the sound source in which the sound such as music stored in the improver 1 is recorded, and the sound such as music is reproduced. Sound is emitted from the sound hole. As a result, the user can hear the sound from the sound output hole 34 of the ear pad 27 through the sound output path 35 through the sound output path 35. When it is difficult to hear the emitted sound, the volume is raised by the volume raising switch 13. Conversely, when the sound is too loud, the volume is lowered by the volume lowering switch 14. It is also possible to adjust the strength of the output sound of the left and right earphones 5 and 6 with the volume up switch 13 or the volume down switch 14. The sound to be emitted needs to be a natural sound (non-modulated sound) and volume that are gentle to human hearing and are flat and wide, without depending on the modulation sound such as the strength of frequency. Further, in the case of binaural training, it is necessary to balance left and right hearing when emitting sound, and it is necessary not to provide an output difference between the left and right earphones 5 and 6.

  And in a state in which the sealing is continuously secured, the listening is continued for a predetermined period of time such as several months to several years in about 2 hours to less than 8 hours a day. During this time, if the ear pad 27 is displaced and cannot be sealed, it will not become an ear-trainer, so make a voice (yeah) to ensure the reverberant sound and take care to maintain and secure the sealed state. The sound collection switch 12 is turned on in the case of a person with heavy / moderate hearing loss at a level that requires hearing aid. When the sound collecting switch 12 is turned on, the sound from the microphones 15 and 16 in the main body 2 is received by the receiver 30 and can be heard well. At this time, since the sound insulation is high and the pulsation is less likely to occur, the reproduction of the full band is adjusted with the volume buttons 13 and 14, and the ear training is continued at a volume that can be clearly heard. As a result, as shown in an improvement case described later, the user's hearing is gradually activated and the hearing ability can be improved.

  Since the ear pads provided in the existing hearing aids and sound collectors are not highly sealed like the ear pads 27 of the improver 1, an oscillation loop is generated and oscillates. For this reason, it is not possible to cut the 500 Hz or lower or 2-3 kHz or higher, save the consonant and output, and use the reproduced sound in the full band. However, the improver 1 to which the ear pad 27 is attached outputs only the sound from the sound emission port 46 as a positive sound, and the sound insulation wall 50 of the ear pad 27 has a high sealing property and sound insulation property, so that the audibility is naturally increased. Since it becomes high and there is little sound leakage, an oscillation loop with an external microphone is not generated.

  The operation of the sealed space will be further described. In contrast, in the conventional ear pad, the sound insulation walls are all of the same outer diameter, whereas in the ear pad 27, the sound insulation wall 50a on the most advanced side has a smaller diameter than the other sound insulation walls 50b to 50e. Therefore, even if one of them is deformed and a gap is formed in that portion, the influence on the other sound insulation walls does not occur unless they come into contact with each other, and each sound insulation wall fits independently to the shape of the ear canal. Therefore, the attenuation is extremely high compared to the conventional one. Further, in the existing device, the sound emission port of the ear pad contacts the inner wall of the ear canal and is blocked and the reproduced sound cannot be heard. In the improver 1, the sound emission port 46 of the ear pad 27 is in contact as shown in FIG. In addition, since the reproduced sound has sound emitting grooves 52 and 52 communicating between the inside of the external auditory canal and the hollow inside of the main body 45, the sound can be heard well from there and the sound path is secured.

<Description of improvement examples>
FIGS. 6 to 12 are hearing measurement data obtained by measuring that the deaf person has improved deafness by the ear training as described above and is gradually becoming a normal hearing person. In each figure, the broken line data in the graphs indicated by thin lines is the hearing ability (dB) of the subject at the start time on the ear training measurement day, and the broken line data in the graphs indicated by thick solid lines is the subjects at the time after starting on the ear training measurement date. Hearing ability (dB). With this hearing ability, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, and 8000Hz are emitted from the sound of the left and right separately, wearing headphones in a silent room, and a signal is emitted when the subject hears it. A doctor or a hearing person is a measurer.

The Person with Disabilities Welfare Law defines the subject's hearing as follows.
26 dB or less Normal (healthy hearing) 26 to 40 dB Mild hearing loss 40 to 70 dB Medium hearing loss 70 to 90 dB High hearing loss 90 to 120 dB Severe hearing loss 120 dB or more Complete hearing loss 3 It is determined by the average hearing level of the audiogram (auditory test table of FIGS. 6 to 12) corresponding to any of the 4/6 methods. From the above, the numerical value indicated by the solid line data moves away from the thin line data to improve the hearing ability, and if it becomes audible at 26 dB or less, it becomes a normal hearing person. Hereinafter, each figure will be described sequentially.

(Improvement example 1)
Fig. 6 shows the hearing measurement data of a 35-year-old woman with binaural severe hearing loss (Hearing Impairment Notebook Level 2) from the start of childhood. Watch TV and DVD through 1 and listen to Shinobue ear training sound source with both ears. At first, when I went to work on weekdays, after returning home, I enjoyed classical music all day long on holidays. From the 6th month, training with Shinobu-tei sound source will start. (A) is the data at the start, (B) is the data for the seventh month, and (C) is the data for the eleventh month. As a result, although the improvement was not seen at the beginning when the hearing aid and the improvement device 1 were used in combination, the improvement started when the use of the hearing aid was stopped and only the improvement device 1 was used. After that, the signs of improvement gradually began to appear after repeated advancements and withdrawals. As shown in (D), the average hearing level shown in the table below in the 6th year was severe deafness in both ears from 110dB severe deafness in both left and right. The level has been improved to around 43 to 45 dB. In the graph, ○ indicates the right ear, X indicates the left ear, and the thin line indicates the hearing at the start.

(Improvement example 2)
FIG. 7 shows an example of improvement of senile deafness due to aging. The subject is a 77-year-old woman with mild hearing loss (with severe tinnitus) at the start, wearing earphones 5 and 6 of the improver 1 as ear training in both ears. Listen to music (mainly Mozart songs). As a result, from the start shown in (A), after the seventh month shown in (B), the measurement medical institutions are different, but as shown in (C), the average hearing level is about 8 months, as shown in the table below. It has been improved from 47 dB on the right to 47 dB on the right to about 25 to 36 dB on the right, and now you can hear birds singing with your bare ears. Now you are listening to your favorite music and enjoying anti-aging. Become a normal listener.

(Improvement example 3)
Fig. 8 shows an example of improvement of senile deafness due to aging. A 64-year-old woman with sensorineural deafness due to aging to the extent that a subject appears to be unable to hear in some places on TV or conversation in daily life at the start. The earphones 5 and 6 of the improver 1 were put on both ears as a training and I listened to Mozart's songs for more than 2 hours every day. Switch to the sound source and listen repeatedly as the volume is increased. As a result, from the start shown in (A), it became possible to listen without stress from the time when 7 months passed as shown in (B). Although the average hearing level was an elderly person with an average hearing level of about 35 to 45 dB from the initial level to about 10 to 2.5 on the right side, the hearing ability was improved to the hearing level of a normal hearing person.

(Improvement example 4)
Fig. 9 shows an example of improvement of senile deafness due to aging. The test subject was an 80-year-old woman who started training for anti-aging, but had no problems with hearing ability and no problem with hearing. Wearing the earphone 5 of the improver 1 to one ear as a training, listen to Shinobue ear training sound source repeatedly for more than 2 hours every day. As a result, from the start shown in (A), as shown in (B), the average hearing level shown in the table below is mildly deaf in about 3 months. It has been improved to the front and back, and while it is training with only one ear, it has improved in conjunction with both ears and has become a healthy hearing that does not seem to be old.

(Improvement example 5)
Fig. 10 shows that the subject who belonged to the brass band at the start and practiced in loud sound every day became difficult to hear the bass, so he started training to improve bass impairment and care for future hearing. A woman wears the earphone 5 of the improver 1 as ear training on both ears and listens to favorite music while working on a personal computer for 2-3 hours every day. As a result, from the start shown in (A), as shown in (B), in the second week, the average hearing level shown in the table below is the normal reference value from the initial right 8.3 to 5.0 dB. Beyond a certain 0 dB, it was improved from right -5.0 to left -6.7 dB, and the bass disorder was improved despite the short-term training, and showed tremendous hearing improvement.

(Improvement example 6)
FIG. 11 is an anti-aging improvement example for the purpose of maintaining English ability, and a 31-year-old woman who starts training for future hearing care at the start and also learns listening English, earphone 5 of improver 1 as ear training Listening to music you like for a total of about 2 hours in 2 days and listening learning. As a result, from the start shown in (A), as shown in (B), at the 10th month or so, the average hearing level shown in the table below is about 11.7 to 6.7 dB from the beginning when the average hearing level is normal. Although it is close to 0 dB and improved to about 3.3 dB on the right and around 3.3 dB on the left, the hearing is originally healthy, but the hearing is becoming flat in a horizontal line.

(Improvement example 7)
Fig. 12 shows an example of improvement of congenital sensory severe hearing loss from childhood. The subject has congenital severe hearing loss only at the left ear at the start (the degree that only "feeling of vibration" is transmitted to the ear without being heard even at a volume exceeding 100 dB). An 11-year-old boy wears the earphone 5 of the improver 1 as an ear training only on his left ear and listens to his favorite television and music (mainly anime theme songs) for more than 2 hours every day. As a result, the sound starts to be heard from the time when 6 months have passed as shown in (B) from the start shown in (A). And when I started training with the Shinobue ear training sound source from the 8th month, there are times when I can continue the ear training and sometimes the hearing ability fluctuates up and down, but finally it is in the first year as shown in (C). As shown in (D), although there are considerable restrictions on ear training for the high school life of the entire dormitory system, in the fifth year, the left about 110 dB from the initial level of severe hearing loss to about 26 left on the level of normal hearing Hearing improved to average hearing level up to around 7dB. Now we are switching to ear training with both ears for the final adjustment to improve the left and right hearing balance.

  In this way, the ear training using the improvement device 1 depends on the level of the sensorineural hearing loss and the individual difference of the subject, so that it is a reality that a time difference of 6 months to 6 years occurs in the measurement. A lot of verification is needed. However, from the above measurement results, it was found that this ear training provided objective data for a hearing impaired person to be a normal hearing person, and had a remarkable effect of improving hearing loss. Ear training has also been shown to be effective in preventing hearing loss. Such ear training has the same effect on music as well as sound on TV.

  In the above-described embodiment, an example is given in which the earphone cords 3 and 4 with the wired earphone jacks 7 and 8 are used as means for connecting the earphones 5 and 6 and the main body 2 of the box type improver 1. Needless to say, it may be a wireless system that is connected by digital radio or the like, which is the current mainstream.

DESCRIPTION OF SYMBOLS 1 Box type improvement device 2 Unit body 3, 4 Earphone cord 5, 6 Earphone 7, 8 Earphone jack 10 Power switch 11 Ear switch 12 Sound collection switch 13 Volume increase button 14 Volume decrease button 15, 16 Earphone microphone 21 Opening 22 Insertion part 25 Main body 27 Ear pad 28 Ring member 29 Tube body 30 Receiver 34 Sound emission hole 35 Sound emission path 36 Ear wax prevention filter 37 Connection terminal 41 Engagement concave part 42 Engagement convex part 45 Main body 46 Sound emission opening 47 Opening openings 50a-50e Sound insulation wall 52, 52 Sound ditch (sound path)

Claims (6)

It is detachably mounted in the ear canal and has a main body formed in a hollow cylindrical shape by an elastic material such as rubber such as silicone rubber or soft synthetic resin such as polypropylene, and this main body has a sound emitting port at the tip. In addition, an opening is formed at the rear end so as to communicate with the hollow interior, and a plurality of pleated sound insulation walls made of the same material as the main body are integrally formed in a ring shape at predetermined intervals in the axial direction. These sound insulating walls are inclined toward the rear end side with respect to the central axis of the main body, and the wall thickness is reduced toward the outer peripheral edge. In the ear pad, the sound insulation wall that contacts the inner wall of the external auditory canal at the outer peripheral edge bends to the rear end side, and a sealed space is formed in the space between the sound insulation wall and the sound insulation wall adjacent to each other.
The sound insulation wall has a smaller diameter than the other sound insulation walls, and the other sound insulation walls have the same diameter, and when mounted on the ear canal, the sound outlet of the main body contacts the inner wall of the ear canal and is blocked. An ear pad characterized in that a sound emission path that communicates the interior of the external auditory canal and the hollow interior of the main body is formed around the sound emission opening in the sound insulation wall on the most advanced side so that the sound path can be secured even in a state where the sound is released.   2. The ear pad according to claim 1, wherein the sound emission path is formed as a sound notch formed extending radially outward from an inner peripheral edge of the sound emission opening on the outer surface of the sound insulation wall on the most advanced side and facing each other. An ear pad characterized by a groove.   An earphone comprising the earpad according to claim 1 or 2 at a tip portion of an earphone main body.   5. The earphone according to claim 3, and a device main body connected to the earphone wirelessly or by wire. The device main body is provided with at least an ear training switch for ear training, a microphone for hearing aid, and a sound collecting switch. An ear training device for improving hearing loss, characterized by   An earphone jack provided with the earphone according to claim 3, and a main body provided with a receptacle into which the earphone jack can be mounted. The main body has at least an ear training switch for ear training and a hearing aid. A hearing-improving ear training device comprising a microphone and a sound collection switch.   An ear training method for improving hearing loss performed using the device for improving hearing loss improving ear hearing according to claim 4 or 5, wherein an ear pad of an earphone inserted into the ear canal of both ears or one ear is connected to the outer peripheral edge of the sound insulating wall on the most advanced side. With the outer ear canal contacting the inner wall of the ear canal and gradually fitting along the outer peripheral edge of the other sound insulation wall to bend, the sound insulation and wearability are maintained and secured so that the inside of the ear canal is sealed, Deafness improvement characterized by activating hearing and improving hearing by turning on ear switch on earphone and continuously emitting unmodulated sound for several hours or months a day Ear training method.

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