KR102113928B1 - Sound transmission device that transmits sound using vibration of bone conduction speaker and Earset with built-in bone conduction speaker - Google Patents

Abstract

The present invention relates to a sound transmission device transmitting sound using the vibration of a bone conduction speaker and an earset with a built-in bone conduction speaker, including: a bone conduction speaker accommodating unit (110) which accommodates two or more bone conduction speaker units and is attached to a part of a user′s body to transmit vibrations of sound generated from the bone conduction speakers to a user′s ear cochlea through a part of the user′s body; and a bone conduction speaker unit (120) accommodated in the bone conduction speaker accommodating unit (110) and including two or more bone conduction speaker units, wherein two or more of the two or more bone conduction speaker units are installed parallel to each other on the attachment surface of the bone conduction speaker accommodating unit (110).

Description

Sound transmission device that transmits sound using vibration of bone conduction speaker and Earset with built-in bone conduction speaker}

The present invention relates to a sound transmission device and an earset, and more particularly, to a sound transmission device that transmits sound using vibration of the bone conduction speaker and an earset incorporating the bone conduction speaker.

In general, there are two ways in which a person can hear sound, an air conduction method and a bone conduction method, of which the air conduction method is an eardrum in which the vibration of sound transmitted to the air is in the ear. , And the vibration of the eardrum is transmitted to the screw-shaped cochlea through the three bones located in the tympanic membrane, Isogol, and the fluid of the lymph is filled in the cochlea, and the vibration of this liquid is an electrical signal. As it turns into a hearing nerve, the human brain recognizes sound.

The bone conduction method omits the process of the vibration passing through the eardrum and the isogol in the sound recognition mechanism, so the vibration of the sound can be transmitted directly to the cochlea through the skull, so that even if there is an abnormality in the eardrum or isogol, sound can be transmitted through the bone conduction A bone conduction speaker is used.

Various types and types of bone conduction speakers have been developed, and most bone conduction speakers have an outer frame, a voice coil that is installed inside the frame to form a magnetic field when an electrical signal is applied, and a magnetic field of the voice coil. It consists of a form including at least one magnet that vibrates while having a certain frequency by interacting with, and a vibrating body that transmits the vibration of the magnet to the human body. Accordingly, when an electrical signal is applied to the voice coil, the voice A magnetic field proportional to the strength of the electrical signal is formed in the coil, and when the magnetic field interacts with the magnet, the magnet vibrates with a predetermined frequency in the vertical direction. As the vibration is output through the vibrating body and transmitted to the human body, the human body recognizes a predetermined acoustic signal.

The advantage of such a bone conduction speaker is that there is no difficulty in hearing even when used for a long time, and it is possible to simultaneously listen to external sound through airway hearing and sound through bone conduction, thereby coping with the danger of sudden surroundings. In addition, it is possible to communicate more accurately in a noisy environment than using a regular speaker. The application fields of these bone conduction speakers are widely used for hearing impaired communication devices and multimedia home appliances, Internet phones, Bluetooth headsets for mobile phones and military, and bone conduction type earphones or earphones including bone conduction speakers can be implemented. .

In the headset or earset of the bone conduction method, the bone conduction speaker is presented as an alternative to the speaker method that prevents or reduces noise-induced hearing loss even when used for a long time, and external sound and bone conduction through airway hearing It is possible to listen to the sound through the sound at the same time, or it is suggested as an alternative to prevent safety accidents, or the bone conduction method directly wows the vibration of the sound through the skull in a large external noise environment, for example, in the driving environment of a motorcycle driver or a bicycle driver. It is being considered and commercialized as an alternative that reduces the influence of external noise without blocking external noise by transmitting and reduces it, and enables more accurate communication than when using a regular speaker.

Furthermore, as well as in the form of a headset or earset that is implemented in the past, the neckrest is attached to a part of the user's body and transmits vibrations of sound generated from the bone conduction speaker to the user's ear cochlea through a part of the user's body. , It can be applied to sound transmission devices that transmit sound using the vibration of bone conduction speakers of various products such as seats.

However, although the bone conduction method has the advantages as described above, the bone conduction method is due to the problem that the sound quality and volume are reduced due to the narrow frequency band of sound transmitted to the user through the bone conduction speaker in the headset or the earset. There is a problem that the sound transmission device that transmits sound using the vibration of the bone conduction speaker of various applied products cannot be universalized, and the low-band sound is reinforced especially when the vibration is transmitted to the bone and skin tissues, and the mid- and high-frequency components are It has a problem of being attenuated and limiting the implementation of high quality sound.

Korean Patent Registration No. 10-1039107 (Huria Corporation, 2011. 05. 30.)

The present invention is a bone conduction speaker unit that vibrates at a high vibration frequency band in constructing a sound transmission device that transmits sound using the vibration of the bone conduction speaker by incorporating various types of bone conduction speakers in addition to a bone conduction headset or ear set. The bone conduction speaker is built-in to improve the sound quality delivered to the user by solving the problem that the bandwidth of the sound transmitted to the user is limited or the sound quality is reduced, including the bone conduction speaker unit that vibrates in a low vibration frequency band. It is an object of the present invention to provide a sound transmission device that transmits sound using vibration of a speaker and an earset incorporating a bone conduction speaker.

In order to solve the above problems, the present invention is, in one aspect, a sound transmission device that transmits sound using vibration of a bone conduction speaker. A bone conduction speaker accommodating unit 110 that transmits vibrations of sound generated from the speaker to a user's ear cochlea through a part of the user's body; And a bone conduction speaker unit 120 accommodated in the bone conduction speaker accommodating unit 110 and including two or more bone conduction speaker units. Two or more of the two or more bone conduction speaker units include the bone conduction speaker accommodating unit. It is characterized by being installed parallel to each other on the attachment surface of (110).

Preferably, the bone conduction speaker accommodating part 110 is a sound generated from the bone conduction speaker when the vibration generating part of the bone conduction speaker part 120 is in close contact with the inner surface and the outer surface is in contact with a part of the body. The vibration transmission body 111 having two or more vibration transmission structures independent of each other to transmit vibrations of the body to a part of the user's body, and coupled to the vibration transmission body 111 to accommodate the bone conduction speaker unit 120 Body 112 is included.

Here, the bone conduction speaker unit 120 preferably includes a first bone conduction speaker unit 121 having a first reproduction frequency band and a second bone conduction speaker unit 122 having a second reproduction frequency band. Do.

In addition, the vibration transmission body 111, the front vibration generating portion of the first bone conduction speaker unit 121 having a first regeneration frequency band on the inner surface is tightly coupled and the outer surface is in contact with a part of the body to transmit vibration The first vibration transmission structure (111a), the second vibration conduction unit of the second bone conduction speaker unit 122 having a second regeneration frequency band is tightly coupled and the outer surface is in contact with a part of the body to transmit the second vibration It is preferred to include a delivery structure 111b.

Furthermore, here, the first vibration transmission structure 111a may be inserted into the external auditory meatus of the user, and may have a protruding shape contacting the inner wall of the external auditory meatus.

In addition, here, the first vibration transmission structure 111a and the second vibration transmission structure 111b may be formed on the same plane that closely adheres to parts of the body at different positions, respectively.

Preferably, the first reproduction frequency band is a higher frequency band than the second reproduction frequency band.

Here, the first bone conduction speaker unit 121 has a reproduction frequency band of 800 to 1.5 kHz higher than the second reproduction frequency band, and the second bone conduction speaker unit 122 is lower than the first reproduction frequency band It is desirable to have a reproduction frequency band in the 400-800 Hz band.

In another aspect, the present invention is an earset incorporating a bone conduction speaker, which accommodates two or more bone conduction speaker units and is attached to a part of the user's body to transmit vibrations of sound generated from the bone conduction speaker through a part of the user's body. A bone conduction speaker accommodating unit 110 that transmits to the user's ear cochlea; And a bone conduction speaker unit 120 accommodated in the bone conduction speaker accommodating unit 110 and including two or more bone conduction speaker units. Including, the bone conduction speaker unit 120 includes the bone conduction speaker accommodating unit 110 It characterized in that it comprises a first bone conduction speaker unit 121 having a first reproduction frequency band, and a second bone conduction speaker unit 122 having a second reproduction frequency band installed parallel to each other on the attachment surface of) do.

Preferably, the control unit 130 includes a control unit 130 that processes sound signals input from an external device and supplies them to each of two or more bone conduction speaker units, wherein the control unit 130 is set by the user through a user input interface (I / F). And an input that receives and processes the operation input, receives and processes an audio signal to be played back to an external device through an external device input / output interface (I / F), and processes and outputs an audio signal for the user's whisper sound to an external device. The output control unit 131, the first output signal processing unit 132, the first output signal processing unit 132 to process the sound signal to be output to the first bone conduction speaker unit 121 according to a preset method according to a preset method A first output signal amplifying unit 133 for amplifying the sound signal output from the output signal processing unit 132 and outputting it to the first bone conduction speaker unit 121, the sound signal received from an external device According to a preset method, the second output signal processing unit 134 for processing and outputting the sound signal to be output to the second bone conduction speaker unit 122, and the sound signal output from the second output signal processing unit 134 And a second output signal amplifying unit 135 that amplifies and outputs the second bone conduction speaker unit 122.

According to the present invention described above, in constructing a bone conduction headset or earset, and also a sound transmitting device that incorporates various types of bone conduction speakers and transmits sound using the vibration of the bone conduction speakers, it vibrates in a specific vibration frequency band. By constructing the bone conduction speaker unit and the bone conduction speaker unit that vibrates in a higher vibration frequency band, it is possible to separate and transmit the bass and treble parts so that the bandwidth of sound is limited or sound in the bone conduction device. By solving the problem that the sound quality is not degraded by not separating, a bone conduction headset or earset in which the sound quality delivered to the user is improved, and various types of bone conduction speakers are built-in to transmit sound using the vibration of the bone conduction speakers. It has the effect of providing a sound transmission device.

1 is a conceptual diagram of a main configuration of a sound transmission device that transmits sound using the vibration of a bone conduction speaker by incorporating a bone conduction speaker according to an embodiment of the present invention.
2 is a view showing the appearance of a sound transmission device that transmits sound by using the vibration of the bone conduction speaker incorporating the bone conduction speaker of the first embodiment of the present invention.
3 is an exploded view and a cross-sectional view of a sound transmission device that incorporates the bone conduction speaker of the first embodiment of the present invention to transmit sound using vibration of the bone conduction speaker.
4 is a state diagram of a sound transmission device that transmits sound by using the vibration of the bone conduction speaker by incorporating the bone conduction speaker of the first embodiment of the present invention.
5 is a view showing the appearance of a sound transmission device that transmits sound by using the vibration of the bone conduction speaker by incorporating the bone conduction speaker of the second embodiment of the present invention.
FIG. 6 is an exploded view and a cross-sectional view of a sound transmission device incorporating the bone conduction speaker of the second embodiment of the present invention to transmit sound using vibration of the bone conduction speaker.
7 is a state diagram of a sound transmitting device for transmitting sound by using the vibration of the bone conduction speaker by incorporating the bone conduction speaker of the second embodiment of the present invention.
8 is a configuration diagram of a control unit of a sound transmission device that transmits sound using the vibration of a bone conduction speaker by incorporating a bone conduction speaker according to an embodiment of the present invention.
9 is a graph showing the results of a characteristic experiment of a reproduction frequency band of an acoustic signal of a bone conduction speaker and an existing bone conduction system used in an embodiment of the present invention.
10 is a graph showing the results of a characteristic experiment of a reproduction frequency band of an acoustic signal of a sound transmission device that transmits sound using the vibration of a bone conduction speaker by incorporating a bone conduction speaker according to an embodiment of the present invention.

Hereinafter, specific contents for carrying out the present invention with reference to the drawings will be described based on examples. These examples are described in detail enough to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain shapes, structures, and properties described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in relation to one embodiment. In addition, it should be understood that the location or placement of individual components within each disclosed embodiment can be changed without departing from the spirit and scope of the invention. Therefore, the detailed description to be described later is not intended to be taken in a limiting sense, and the scope of the present invention is limited only by the appended claims together with all ranges equivalent to those claimed by the claims if appropriately described. In the drawings, similar reference numerals refer to the same or similar functions throughout several aspects.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification are used in a sense that can be commonly understood by those skilled in the art to which the present invention pertains. In addition, commonly used dictionary-defined terms are not to be interpreted ideally or excessively, unless explicitly defined otherwise.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to enable those skilled in the art to easily implement the present invention. The same reference numerals in each drawing denote the same members. In the present specification, an earset having a bone conduction speaker is an implementation form of a sound transmission device that incorporates a bone conduction speaker and transmits sound using vibration of the bone conduction speaker. do.

1 is a conceptual diagram of a main configuration of a sound transmission device that transmits sound using the vibration of a bone conduction speaker by incorporating a bone conduction speaker according to an embodiment of the present invention.

Referring to FIG. 1, as a sound transmission device that transmits sound using vibration of a bone conduction speaker, vibrations of sound generated from the bone conduction speaker are accommodated in two or more bone conduction speaker units and attached to a part of the user's body A bone conduction speaker accommodating unit (110) for transmitting the body to the cochlea in the user's ear through a part of the body; And a bone conduction speaker unit 120 accommodated in the bone conduction speaker receiving unit 110 and including two or more bone conduction speaker units.

2 or more of the two or more bone conduction speaker units as shown in the first embodiment described with reference to FIGS. 2 to 4 and the second embodiment described with reference to FIGS. It characterized in that it is installed parallel to each other on the attachment surface of the bone conduction speaker receiving portion (110).

In addition, depending on the embodiment, by processing the sound signal input from an external device, the two or more bone conduction speaker units are supplied to the first bone conduction speaker unit 121 and the second bone conduction speaker unit 122 in the embodiments described later, respectively. It may be configured to include a control unit 130. The method of processing the sound signal in the control unit 140 is determined in advance according to the characteristics of the first bone conduction speaker unit 121 and the second bone conduction speaker unit 122 and stored in a program form.

In addition, according to an embodiment, when implemented as a callable earpiece connected to an external device such as a smart device, the microphone unit 140 that receives and processes a user's voice may be further included.

In the case of the first and second embodiments described below, two bone conduction speaker units are used in parallel, and two bone conduction speaker units are installed in parallel with each other, and vibrations generated therefrom are part of the user's body, such as the skull (cranial bone) and / or inner ear bone (inner ear bone) to perform the function of delivering to the user's ear cochlea.

 Two or more of the two or more bone conduction speaker units have different reproduction frequency bands, and as in the first and second embodiments described later, the first bone conduction speaker unit 121 has a second reproduction frequency band. It has a higher first reproduction frequency band, for example, may have a reproduction frequency band of 800 to 1.5 kHz called a mid-range, and the second bone conduction speaker unit 122 has a second reproduction frequency lower than the first reproduction frequency band The band, for example, the second reproduction frequency band may have a bass band of approximately 400 to 800 Hz band.

Here, the reproduction frequency band refers to a band from the lowest resonance frequency to the high frequency limit frequency.

Through this, one of the two or more bone conduction speaker units performs the same function as a woofer that transmits vibrations to the bass, and the other performs the same function as a tweeter that transmits vibrations to the mid and high ranges, thereby providing a bone conduction headset to In a sound transmission device that transmits sound by using the vibration of a bone conduction speaker including an earset, it is possible to separate and transmit a mid-bass part and a high-pitched part, thereby improving sound quality delivered to a user. That is, the bone conduction speaker unit, which is a source of vibration, is installed parallel to each other on the attachment surface to transmit vibration while minimizing mutual interference on the contact surface, and furthermore, it is combined with two or more independent vibration transmission structures to separate the bass and treble parts. Can be maximized.

The sound transmission device that transmits sound by using the vibration of the bone conduction speaker of the present invention has the form of a headset or earset of the conventional sound air transmission method in the case of the first and second embodiments. However, the present invention is not limited thereto, and various forms of transmitting sound through vibration by contacting a part of the user's body, such as a neckband, head band, and neckrest of a car seat, etc. Can be implemented as

2 is a view showing the appearance of a sound transmission device that transmits sound by using the vibration of the bone conduction speaker incorporating the bone conduction speaker of the first embodiment of the present invention, and FIG. 3 is a bone conduction diagram of the first embodiment of the present invention FIG. 4 is an exploded view and a cross-sectional view of a sound transmission device that incorporates a speaker and transmits sound using vibration of the bone conduction speaker. It is a state of wearing a sound transmission device that transmits sound.

A first embodiment of the present invention will be described with reference to FIGS. 2 to 4.

Referring to FIGS. 2 to 3, the sound transmission device 100 incorporating the bone conduction speaker of the first embodiment to transmit sound using vibration of the bone conduction speaker can be worn on a user's ear as shown in FIG. 4. It has the shape of an earset with a built-in bone conduction speaker.

The sound transmission devices 100 to earsets that transmit sound using the vibration of the bone conduction speaker of this embodiment include a bone conduction speaker accommodating unit 110, a bone conduction speaker unit 120, and a control unit 130. do. In addition, it includes a control unit 130 for processing the sound signal input from an external device to supply to the bone conduction speaker unit 120.

The bone conduction speaker accommodating unit 110 of this embodiment accommodates the bone conduction speaker unit and is attached to a part of the user's body to transmit vibrations of sound generated from the bone conduction speaker to the user's ear through a part of the user's body. It has a structure that transmits, and the vibration generating portion of the bone conduction speaker unit 120 is tightly coupled to the inner surface, and the outer surface is in contact with a part of the body, and the vibration of sound generated from the bone conduction speaker is a part of the user's body. It comprises a vibration transmission body 111 having two or more vibration transmission structures independent of each other to transmit to, and a receiving body 112 coupled to the vibration transmission body 111 to receive the bone conduction speaker unit 120 do.

The bone conduction speaker unit 120 of the present embodiment includes two speakers of a first bone conduction speaker unit 121 having a first reproduction frequency band and a second bone conduction speaker unit 122 having a second reproduction frequency band. Includes units.

The first reproduction frequency band has a higher frequency band than the second reproduction frequency band, and the bone conduction speaker unit vibrating at a specific vibration frequency band and vibrating at a higher vibration frequency band by optimization considering an appropriate device structure By including the bone conduction speaker unit, it is possible to separate and transmit the bass and treble parts, thereby solving the problem that the sound quality is deteriorated because the bandwidth of sound is limited or the sound is not separated from the existing bone conduction type earphones or earphones. , It has the effect of improving the sound quality delivered to the user.

According to various experimental results, the first bone conduction speaker unit 121 has a reproduction frequency band of 800 to 1.5 kHz higher than the second reproduction frequency band, and the second bone conduction speaker unit 122 has the first reproduction frequency It was set to have a reproduction frequency band of 400-800 Hz band lower than the band.

In addition, the reproduction frequency may be adjusted according to the size of the first bone conduction speaker unit. To this end, in the case of the first embodiment, the first bone conduction speaker unit 121 is composed of a vibrator having a size of 7 pi, and the second The bone conduction speaker unit 122 was configured with an oscillator having a size of 10 pi.

Accordingly, the vibration transmission body 111 of the first embodiment, the front vibration generating portion of the first bone conduction speaker unit 121 having a first reproduction frequency band on the inner surface is tightly coupled and the outer surface is in contact with a part of the body The first vibration transmission structure 111a that transmits vibration, and the front vibration generating portion of the second bone conduction speaker unit 122 having the second regeneration frequency band are tightly coupled and the outer surface is in contact with a part of the body to transmit vibration It includes a second vibration transmission structure (111b), the first vibration transmission structure (111a) and through the second vibration transmission structure (111b) installed parallel to the attachment surface to the inner counterpart of the vibration transmission body (111) The vibrations of the acoustic signals of the first bone conduction speaker unit 121 and the second bone conduction speaker unit 122 are transmitted independently.

The first vibration transmission structure 111a of the present embodiment is inserted into the external auditory meatus of the user and has a protruding shape in contact with the inner wall of the external auditory meatus, and is worn as shown in FIG. 4 so that the first vibration transmission structure 111a is inserted into the external auditory meatus It is closely coupled with the inner wall of the external auditory meatus to fix the device, and has a structure that transmits vibration of an acoustic signal to the cochlea as much as possible through the inner ear bone, thereby enabling the first bone conduction in this embodiment. It has a structure to minimize the attenuation in the transmission path of the frequency component of the mid-range reproduced in the speaker unit 121.

5 is a view showing the appearance of a sound transmission device that transmits sound by using the vibration of the bone conduction speaker incorporating the bone conduction speaker of the second embodiment of the present invention, and FIG. 6 is the bone conduction of the second embodiment of the present invention An exploded view and a cross-sectional view of a sound transmission device incorporating a speaker to transmit sound using vibration of a bone conduction speaker, FIG. 7 is a bone conduction speaker according to a second embodiment of the present invention, and uses the vibration of the bone conduction speaker to generate sound. It is the wearing state of the sound transmission device to be transmitted.

A second embodiment of the present invention will be described with reference to FIGS. 5 to 7.

Referring to FIGS. 5 to 7, the sound transmission device 100 incorporating the bone conduction speaker of the second embodiment to transmit sound using vibration of the bone conduction speaker can be worn on the user's ear as shown in FIG. 5. It may take the form of a headset with a built-in bone conduction speaker, but is not limited to this. It is attached to a part of the body of the user's cranial bone part and transmits vibration of sound generated from the bone conduction speaker to the user's skull (cranial bone). ) It can be applied to a sound transmission device that transmits sound using vibrations of bone conduction speakers in various forms such as a neck support and a sheet that are delivered to the user's ear through a part.

The sound transmission devices 100 to earsets that transmit sound using the vibration of the bone conduction speaker of this embodiment include a bone conduction speaker accommodating unit 110, a bone conduction speaker unit 120, and a control unit 130. do. In addition, it includes a control unit 130 for processing the sound signal input from an external device to supply to the bone conduction speaker unit 120.

The bone conduction speaker accommodating unit 110 of this embodiment accommodates the bone conduction speaker unit and is attached to a part of the user's body to transmit vibrations of sound generated from the bone conduction speaker to the user's ear through a part of the user's body. It has a structure that transmits, and the vibration generating portion of the bone conduction speaker unit 120 is tightly coupled to the inner surface, and the outer surface is in contact with a part of the body, and the vibration of sound generated from the bone conduction speaker is a part of the user's body. It comprises a vibration transmission body 111 having two or more vibration transmission structures independent of each other to transmit to, and a receiving body 112 coupled to the vibration transmission body 111 to receive the bone conduction speaker unit 120 do.

The bone conduction speaker unit 120 of the present embodiment includes two speakers of a first bone conduction speaker unit 121 having a first reproduction frequency band and a second bone conduction speaker unit 122 having a second reproduction frequency band. Includes units.

The first reproducing frequency band has a higher frequency band than the second reproducing frequency band, and the bone conduction speaker unit vibrates in the mid-bass vibration frequency band and the higher-mid-vibration vibration frequency band by optimization considering an appropriate device structure. By including the bone conduction speaker unit, it is possible to separate and transmit the bass and treble parts, thereby solving the problem that the sound quality is deteriorated because the bandwidth of sound is limited or the sound is not separated from the existing bone conduction type earphones or earphones. Thus, it has the effect of improving the sound quality delivered to the user.

According to various experimental results, the first bone conduction speaker unit 121 has a reproduction frequency band of 800 to 1.5 kHz higher than the second reproduction frequency band, and the second bone conduction speaker unit 122 has the first reproduction frequency It was set to have a reproduction frequency band of 400-800 Hz band lower than the band.

In addition, the reproduction frequency may be adjusted according to the size of the first bone conduction speaker unit. To this end, in the case of the first embodiment, the first bone conduction speaker unit 121 is composed of a vibrator having a size of 7 pi, and the second The bone conduction speaker unit 122 was configured with an oscillator having a size of 10 pi.

Accordingly, the vibration transmission body 111 of the second embodiment, the front vibration generating portion of the first bone conduction speaker unit 121 having a first regeneration frequency band on the inner surface is tightly coupled and the outer surface is in contact with a part of the body The first vibration transmission structure 111a that transmits vibration, and the front vibration generating portion of the second bone conduction speaker unit 122 having the second regeneration frequency band are tightly coupled and the outer surface is in contact with a part of the body to transmit vibration It includes a second vibration transmission structure (111b), the first vibration transmission structure (111a) and through the second vibration transmission structure (111b) installed parallel to the attachment surface to the inner counterpart of the vibration transmission body (111) The vibrations of the acoustic signals of the first bone conduction speaker unit 121 and the second bone conduction speaker unit 122 are transmitted independently.

The first oscillation transmission structure 111a and the second oscillation transmission structure 111b of this embodiment are formed on the same plane, which are in close contact with parts of the body at different positions, and are provided on a part of the body of the cranial bone. It is attached, and has a structure for separating and transmitting the mid-bass part and the treble part through the cranial bone part, and the vibration of sound generated from the bone conduction speaker of the user or the form worn as shown in FIG. It can be implemented in the form of a sound transmission device that transmits sound using the vibration of the bone conduction speaker in various forms such as a neck support and a seat that are delivered to the user's ear cochlear through the (cranial bone) part.

In addition, when implemented in various forms such as a neckrest and a seat, a plurality of sound transmission devices that transmit sound using vibration of the bone conduction speaker are arranged as two or more sound transmission modules, and thus can be easily implemented in various types of devices. have. In this case, the control unit 130 is not included in each of the sound transmission devices that transmit sound by using the vibration of the bone conduction speaker, but is separately configured to transmit sound using the vibration of the bone conduction speaker, which is a sound transmission module. It can be configured to control each.

8 is a configuration diagram of a control unit of a sound transmission device that transmits sound using the vibration of a bone conduction speaker by incorporating a bone conduction speaker according to an embodiment of the present invention.

Referring to FIG. 8, the controller 130 receives and processes a user's setting and operation input through a user input interface (I / F), and sounds to be played by an external device through an external device input / output interface (I / F) An input / output control unit 131 for receiving and processing signals, processing an audio signal for a user's ear, and outputting it to an external device, and receiving the sound signal received from the external device according to a preset method, the first bone conduction speaker The first output signal processing unit 132 which processes and outputs the sound signal to be output to the unit 121, amplifies the sound signal output from the first output signal processing unit 132, and outputs it to the first bone conduction speaker unit 121 The first output signal amplifying unit 133, the second output signal processing to process the sound signal received from an external device as a sound signal to be output to the second bone conduction speaker unit 122 according to a preset method It may be configured to include a second output signal amplification unit 135 for amplifying the sound signal output from the second output signal processing unit 134 and outputting it to the second bone conduction speaker unit 122. .

According to an embodiment, the present invention may be implemented with a callable earset connected to an external device such as a smart device, and in this case, the present invention is an earset having a bone conduction speaker and accommodates two or more bone conduction speaker units. And a bone conduction speaker accommodating unit 110 which is attached to a part of the user's body and transmits vibration of sound generated from the bone conduction speaker to a user's ear cochlea through a part of the user's body; And a bone conduction speaker unit 120 accommodated in the bone conduction speaker accommodating unit 110 and including two or more bone conduction speaker units. Including, the bone conduction speaker unit 120 includes the bone conduction speaker accommodating unit 110 It characterized in that it comprises a first bone conduction speaker unit 121 having a first reproduction frequency band, and a second bone conduction speaker unit 122 having a second reproduction frequency band installed parallel to each other on the attachment surface of) In this case, it is also essential to include a control unit 130 that processes the sound signal input from an external device and supplies it to each of two or more bone conduction speaker units, wherein the control unit 130 receives and processes a user's voice. When the unit 140 is additionally included, an input signal processor 136 for processing sound input through the microphone unit is further included.

9 is a graph showing the results of a characteristic experiment of a reproduction frequency band of an acoustic signal of a bone conduction speaker and an existing bone conduction system used in an embodiment of the present invention.

As the comparison data of the reproduction frequency band of the bone conduction speaker unit applied to the first and second embodiments, ① is a treble vibrator (first bone conduction speaker unit 121), ② is a bass vibrator (second bone conduction) The speaker unit 122) and ③ compare and display the reproduction frequency band of the existing bone conduction speaker-embedded product (product name: aftermarket). Through this, in the case of the existing bone conduction speaker built-in product (product name: After 샥), it can be confirmed that the sound bandwidth is limited or the sound quality is not degraded due to the separation of the sound. According to the features comprising a bone conduction speaker unit (first bone conduction speaker unit 121) and a bone conduction speaker unit (second bone conduction speaker unit 122) that vibrates in a different bass vibration frequency band, By forming an independent vibration transmission structure, it is possible to separate and transmit the bass part and the treble part, thereby solving the problem that the sound quality is deteriorated because the bandwidth of sound is limited or the sound is not separated from the existing bone conduction type earphones or earphones. , It can be seen that the sound quality delivered to the user is improved.

10 is a graph showing the results of a characteristic experiment of a reproduction frequency band of an acoustic signal of a sound transmission device that transmits sound using the vibration of a bone conduction speaker by incorporating a bone conduction speaker according to an embodiment of the present invention.

The data of the reproduction frequency band of the sound transmission device that transmits sound by using the vibrations of the bone conduction speakers of the first and second embodiments, and by an independent vibration transmission structure, a wide including a bass part and a treble part It has a reproducing frequency band, and it can be confirmed that the mid-bass portion and the treble portion are transmitted separately.

As described above, the present invention is a bone conduction speaker unit and vibration that vibrates in a high vibration frequency band in constructing a sound transmission device that transmits sound using vibration of a bone conduction speaker including a bone conduction type headset or earset. By including the bone conduction speaker unit that vibrates in the frequency band, it is possible to separate and transmit the bass and treble parts, so that the bandwidth of sound is limited or the sound is not separated in devices such as existing bone conduction headsets or earphones. In order to solve this deteriorating problem, it was described through an embodiment that the configuration has an effect of providing a sound transmission device that transmits sound by using vibration of a bone conduction speaker that improves sound quality delivered to a user.

As described above, the present invention has been described in the present specification by specific matters such as specific components, and various limited embodiments and drawings. However, this is provided only to assist in a more general understanding and easy implementation of the present invention, and the present invention is not limited to the above-described embodiments, and those skilled in the art to which the present invention pertains may vary from these descriptions. Modifications and modifications are possible.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and should not be determined, and all claims that are equivalent or equivalent to the scope of the claims as well as the claims described below belong to the scope of the spirit of the invention. .

100: sound transmission device that transmits sound using the vibration of the bone conduction speaker
110: bone conduction speaker receiving unit
111: vibration transmission body
111a: first vibration transmission structure 111b: second vibration transmission structure
112: accommodation body
120: bone conduction speaker unit
121: first bone conduction speaker unit
122: second bone conduction speaker unit

Claims (10)

delete delete In the sound transmission device for transmitting sound using the vibration of the bone conduction speaker,
Bone conduction speaker accommodating unit 110 that accommodates two or more bone conduction speaker units and is attached to a part of the user's body and transmits vibration of sound generated from the bone conduction speaker to a user's ear cochlea through a part of the user's body. ; And
Including the bone conduction speaker unit 120 accommodated in the bone conduction speaker accommodating unit 110 and includes two or more bone conduction speaker units.
Two or more of the two or more bone conduction speaker units are installed parallel to each other on the attachment surface of the bone conduction speaker receiving unit 110,
The bone conduction speaker receiving unit 110,
The vibration generating portion of the bone conduction speaker unit 120 is in close contact with the inner surface, and the outer surface is in contact with a part of the body and is independent of each other to transmit vibrations of sound generated from the bone conduction speaker to a part of the user's body. The vibration transmission body 111 having the above-described vibration transmission structure, and
It is coupled to the vibration transmission body 111 includes a receiving body 112 for receiving the bone conduction speaker unit 120,
The bone conduction speaker unit 120,
A first bone conduction speaker unit 121 having a first reproduction frequency band, and
Sound transmission device for transmitting sound using the vibration of the bone conduction speaker, characterized in that it comprises a second bone conduction speaker unit 122 having a second reproduction frequency band.
The method according to claim 3,
The vibration transmission body 111,
A first vibration transmission structure (111a) that transmits vibration by closely coupling the front vibration generating unit of the first bone conduction speaker unit 121 having the first regeneration frequency band to the inner surface and contacting the outer surface with a part of the body,
It characterized in that it comprises a second vibration transmission structure (111b) of the front vibration generating portion of the second bone conduction speaker unit 122 having a second reproduction frequency band and the outer surface is in contact with a part of the body to transmit vibration. A sound transmission device that transmits sound using the vibration of a bone conduction speaker.
The method according to claim 4,
The first vibration transmission structure (111a) is inserted into the user's ear canal, a sound transmission device for transmitting sound using the vibration of the bone conduction speaker, characterized in that the protruding shape in contact with the inner wall of the ear canal.
The method according to claim 4,
The first vibration transmission structure (111a) and the second vibration transmission structure (111b), each of which is formed on the same plane in close contact with a part of the body of different bone conduction speaker using the vibration of the sound transmission Sound transmission equipment.
The method according to any one of claims 3 to 6,
The first reproduction frequency band is a sound transmission device for transmitting sound by using the vibration of the bone conduction speaker, characterized in that the frequency band higher than the second reproduction frequency band.
The method according to claim 7,
The first bone conduction speaker unit 121 has a reproduction frequency band of 800 to 1.5 kHz higher than the second reproduction frequency band, and the second bone conduction speaker unit 122 is 400 ~ lower than the first reproduction frequency band. A sound transmission device that transmits sound using vibration of a bone conduction speaker, characterized by having a reproduction frequency band in the 800 Hz band.
In the earset with built-in bone conduction speaker,
Bone conduction speaker accommodating unit 110 that accommodates two or more bone conduction speaker units and is attached to a part of the user's body and transmits vibration of sound generated from the bone conduction speaker to a user's ear cochlea through a part of the user's body. ; And
Including the bone conduction speaker unit 120 accommodated in the bone conduction speaker accommodating unit 110 and includes two or more bone conduction speaker units.
The bone conduction speaker unit 120 has a first bone conduction speaker unit 121 having a first reproduction frequency band installed parallel to each other on an attachment surface of the bone conduction speaker receiving unit 110, and a second reproduction frequency band Earset with a built-in bone conduction speaker, characterized in that it comprises a second bone conduction speaker unit (122).
The method according to claim 9,
Including a control unit 130 for processing the sound signal input from the external device to supply to each of the two or more bone conduction speaker unit,
The control unit 130 receives and processes a user's setting and operation input through a user input interface (I / F), and receives and processes sound signals to be played by an external device through an external device input / output interface (I / F). , Input / output control unit 131 which processes the sound signal for the user's ear and outputs it to an external device, outputs the sound signal received from the external device to the first bone conduction speaker unit 121 according to a preset method The first output signal processing unit 132 for processing and outputting the sound signal to be amplified, and the first output signal amplification for amplifying the sound signal output from the first output signal processing unit 132 and outputting it to the first bone conduction speaker unit 121 The second output signal processing unit 134, which processes and outputs the sound signal received from the external device as an audio signal to be output to the second bone conduction speaker unit 122 according to a preset method. Exodus Signal processing by amplifying the sound signal output from the 134 second bone conduction ear set a built-in bone conduction speaker, wherein a second output signal amplifier 135 which outputs to the speaker unit 122.

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