Wearable acoustic device with microphone

A wearable acoustic device with a microphone is provided. The wearable acoustic device includes a first housing forming a first acoustic emission path, a second housing combined with the first housing in a first direction that is substantially parallel to the first acoustic emission path, an acoustic component part arranged within the second housing and emitting sound through the first acoustic emission path, and at least one microphone arranged adjacent to the first acoustic emission path within the first housing.

PRIORITY

This application claims priority under 35 U.S.C. § 119(a) to a Korean Patent Application filed in the Korean Intellectual Property Office on Apr. 29, 2016 and assigned Serial No. 10-2016-0052874, the contents of which are incorporated herein by reference.

BACKGROUND

1. Field of the Disclosure

The present disclosure generally relates to a wearable acoustic device with a microphone, and more particularly, to a wearable acoustic device that is worn on an ear.

2. Description of the Related Art

Commonly, a sound related electronic device provides a hearing sense function, and the sound related electronic device can be worn near an ear. For example, the sound related electronic device can be a type of device (i.e., wearable device) for being worn on the ear. The sound related electronic device can be mounted for use with at least one or more sound related components. An acoustic component can include a speaker, a microphone, a receiver, etc., for example. These acoustic components can be mounted in various structures.

However, such an electronic device can be disadvantageous to design miniaturization because of the need for an additional space for mounting the acoustic components in a restricted internal space of a small sized device. Also, the electronic device can cause deterioration of a sound quality due to a mounting structure of the acoustic component as well.

SUMMARY

An aspect of the present provides for mounting an acoustic component without increasing the entire size within a restricted mounting space of a small sized wearable acoustic device such as an earphone.

Another aspect of the present disclosure provides a wearable acoustic device for improving acoustic performance by securing an acoustic path.

Another aspect of the present disclosure provides a wearable acoustic device capable of mounting a microphone for noise cancellation without an additional space.

In accordance with an aspect of the present disclosure, a wearable acoustic device includes a first housing forming a first acoustic emission path, a second housing combined with the first housing in a first direction that is substantially parallel to the first acoustic emission path, an acoustic component part arranged within the second housing and emitting sound through the first acoustic emission path, and at least one microphone arranged adjacent to the first acoustic emission path within the first housing.

In accordance with an aspect of the present disclosure, a wearable acoustic device includes a nozzle forming a first acoustic emission path, a housing combined with the nozzle in a first direction that is substantially parallel to the first acoustic emission path, a speaker arranged within the housing and emitting sound through the first acoustic emission path, and a microphone arranged adjacent to the first acoustic emission path within the housing.

DETAILED DESCRIPTION

As used herein, the expressions “have”, “may have”, “include”, or “may include” refer to the existence of a corresponding feature (e.g., numeral, function, operation, or constituent element such as component), and do not exclude one or more additional features.

The expressions such as “first”, “second”, or the like used in various embodiments of the present disclosure may modify various elements regardless of order or importance, and do not limit corresponding elements. The above-described expressions may be used to distinguish an element from another element. For example, a first user device and a second user device indicate different user devices although both of them are user devices. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present disclosure.

The terms used herein are merely for the purpose of describing particular embodiments and are not intended to limit the scope of other embodiments. As used herein, singular forms may include plural forms as well unless the context clearly indicates otherwise. Unless defined otherwise, all terms used herein, including technical terms and scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the art to which the present disclosure pertains. Terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is the same or similar to their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. In some cases, even a term defined in the present disclosure should not be interpreted to exclude embodiments of the present disclosure.

Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings.

A construction of a wearable acoustic device according to the present disclosure will be described below in detail with reference to the accompanying drawings. In the respective drawings, a rectangular coordinate system can be used. In the drawing, a Y axis can mean a first direction, and an X axis can mean a second direction.

FIG. 1Ais a side view and detailed perspective view illustrating a wearable acoustic device according to an embodiment of the present disclosure.FIG. 1Bis a plan view illustrating the wearable acoustic device according to an embodiment of the present disclosure.FIG. 2is an exploded perspective view illustrating the wearable acoustic device according to an embodiments of the present disclosure.

Referring toFIG. 1andFIG. 2, the wearable acoustic device100is a wearable device worn on a human body. For example, the wearable acoustic device100is an electronic device for a hearing sense related to sound. The wearable acoustic device100can be a small sized wearable device including a headphone that is worn on an ear, a headset, an ear set, an earphone, a hearing aid, an ear type headset, an earbud, etc. Particularly, the wearable device100according to an embodiment of the present disclosure can be a miniaturized wearable device that can be worn on the ear by an ear mold having elasticity and size to be worn in the inner ear.

The wearable acoustic device100includes at least one or more housings110and/or120, a microphone210, a circuit substrate220, an acoustic component part240,15etc.

The housing110and/or120can include a first housing110and a second housing120. The first housing110can be a nozzle forming a path emitting sound from the acoustic component part240. The first housing110is insertable into the inner ear (i.e.,20internal ear). Although not illustrated in the drawing, an ear mold can be further combined to the first housing110and be wearable in the inner ear. The first housing110can have a size and shape of being insertable into the internal ear. The first housing110can be of a hollow cylindrical shape.

The first housing110can include a microphone mounting part110a and a first acoustic emission path110b.

The microphone mounting part110acan be formed to secure the first acoustic emission path110b. The microphone mounting part110acan mount the microphone210, and the circuit substrate220. That is, at least one or more microphones210, circuit substrates220, etc. can be mounted in at least one part of the first housing110.

The microphone210can be arranged in consideration of a size of the first housing110. The microphone210can be arranged to secure an acoustic emission path in the first housing110. That is, the microphone210can be arranged to secure the first acoustic emission path110b. The microphone210can be arranged adjacent to the first acoustic emission path110b. For example, a part210L having a greater length in the microphone210can be arranged along a first direction that is a length direction of the first housing110. Where a length or width of the part210L is greater than a width or inner diameter of the first housing110, the part210L can be arranged in a first direction. That is, an upper surface of the microphone210can be arranged to face an inner surface of the first housing110. But, the present disclosure is not limited to this, and where the length or width of the part210L is less than the width or inner diameter of the first housing110, the part210L can be arranged in a second direction. That is, the upper surface of the microphone210can be arranged to face an upper part or lower part of the first housing110.

Similarly, a part220L having a greater length in the circuit substrate220mounted20with the microphone210can be arranged along the first direction in the first housing110.

That is, where a length or width of the part220L is greater than a width or inner diameter of the first housing110, the part220L can be arranged in the first direction. That is, an upper surface of the circuit substrate220can be arranged to face an inner surface of the first housing110. But the present disclosure is not limited to this, and where the length or25width of the part220L is less than the width or inner diameter of the first housing110, the part220L can be arranged in the second direction. That is, the upper surface of the circuit substrate220can be arranged to face an upper part or lower part of the first housing110.

The microphone210can be a microphone for noise cancellation. The microphone210can be a feedback (FB) microphone for active noise cancellation (ANC) for collecting noises within the wearable acoustic device100. For example, the microphone210can include various kinds of microphones such as an electronic condenser microphone (ECM), a micro electro mechanical system (MEMS), etc. Also, the microphone210can include a bottom type microphone in which a microphone hole210h1is designed in the bottom. InFIG. 2, the bottom type microphone in which the microphone hole210h1is provided in the bottom is illustrated. But the present disclosure is not limited to this, and the microphone210can be a top type microphone in which a microphone hole is designed in a top surface as well. Also, the present disclosure is not limited to this, and the microphone210can be various kinds of microphones capable of collecting sound.

The circuit substrate220is electrically connected with the microphone210. The circuit substrate220forwards an electrical signal to the microphone210. Alternatively, the circuit substrate220can forward an electrical signal of the microphone210to other components of the wearable acoustic device100. For example, the circuit substrate220can forward an electrical signal of the microphone210to the acoustic component part240. The circuit substrate220can include a soldering terminal for signal connection. At this time, the circuit substrate220can include various kinds of substrates such as a printed circuit board (PCB), a flexible printed circuit board (FPCB), etc. The wearable acoustic device100can further have a cable for making a physical connection between the circuit substrate220and the acoustic component part240. The cable can be of an FPCB or wire form. Alternatively, though not illustrated in the drawing, by substituting the circuit substrate220, only a cable of a wire form can be provided as well.

A fixing part230can be further arranged in the microphone mounting part110aand fix the microphone210and the circuit substrate220. The fixing part230can be separately provided in the microphone mounting part110a, and installed within the first housing110. The fixing part230can be, for example, a Steel Use Stainless (SUS), etc. The fixing part230fixes the microphone210and the circuit substrate220. The fixing part230can be constructed of various materials having hardness and strength capable of safely mounting the fixing part230in the first housing110. The fixing part230can include a safe mounting part231capable of safely mounting the circuit substrate220mounted with the microphone210. Also, the fixing part230can include at least any one of a first combination part233and a second combination part235that extend from the safe mounting part231such that the fixing part230can be combined to the first housing110. The fixing part230can include at least one first opening part230a, a second opening part230b, and a third opening part230c. InFIG. 2, it is illustrated that the fixing part230includes all of the first opening part230a, the second opening part230b, and the third opening part230c. But the present disclosure is not limited to this, and the fixing part230can include one or more opening parts among these. Through the opening parts230a,230b, and230c, the performance of the microphone210can be secured, and the acoustic performance of the wearable acoustic device100can be secured. This will be described later in detail.

The first acoustic emission path110bcan be arranged adjacent to the microphone mounting part110a. That is, at least one part of the first housing110can form the acoustic emission path. The first acoustic emission path110bcan be formed along the first direction. The first acoustic emission path110bforms the remaining part excluding the microphone mounting part110ain the first housing110. The first acoustic emission path110bcan be a path that sound emitted from a speaker of the acoustic component part240flows through.

The second housing120can be combined with the first housing110in the first direction. That is, the second housing120can be combined in the first direction to be substantially parallel to the first acoustic emission path110b. The second housing120can be assembled with the first housing110by ultrasonic welding. While inFIGS. 1 and 2, the second housing120is shown to be comprised of one body, the present disclosure is not limited to this, and the second housing120can be a combined structure of housings having various forms and pieces.

The acoustic component part240can be mounted within the second housing120. The acoustic component part240can include various acoustic components, a speaker, a sensor, a battery, and a button, etc. The acoustic component part240can emit sound through the first acoustic emission path110b. This acoustic component part240can be fixed by a support member, etc.

FIG. 3Ais a plan view illustrating one surface of a fixing part on which a microphone and a circuit substrate are mounted, in a wearable acoustic device according to an embodiment of the present disclosure.FIG. 3Bis a plan view illustrating the other surface of the fixing part on which the microphone and the circuit substrate are mounted, in the wearable acoustic device according to an embodiment of the present disclosure.

As illustrated inFIG. 3A, the microphone210and the circuit substrate220can be mounted on any one surface of the safe mounting part231in the fixing part230. That is, the circuit substrate220mounted with the microphone210can be assembled to any surface of the safe mounting part231. For example, the circuit substrate220mounted with the microphone210can be fixed to the safe mounting part231by an adhesive layer (510ofFIG. 5). That is, in various exemplary embodiments, the adhesive layer can be further provided between the safe mounting part231of the fixing part230and the circuit substrate220. The adhesive layer can be a double-sided tape.

As illustrated inFIG. 3B, at least one part of the microphone210can be exposed through the second opening part230bof the safe mounting part231. For example, a microphone hole of the microphone210can be exposed through the second opening part230b. The circuit substrate220can further include a fourth opening part220acorresponding to the second opening part230b. One part of the microphone210can be exposed to the second opening part230band the fourth opening part220a. That is, the microphone hole of the microphone210can be exposed through the second opening part230band the fourth opening part220a.

FIG. 4Ais a perspective view illustrating an upper end at which a fixing part and a first housing are combined.FIG. 4Bis a perspective view illustrating a lower end at which the fixing part and the first housing are combined.

As illustrated inFIG. 4A, the first combination part233of the fixing part230and the first housing110can be combined to each other in various manners. For example, an inner surface of the first housing110can include a step. The first combination part233can be mounted on the step of the first housing110. That is, the inner surface of the first housing110can include a step, a recess, an assembly groove, etc. such that the first combination part233of the fixing part230can be combined. But the present disclosure is not limited to this, and the first housing110and the fixing part230can be combined with each other through various combination structures.

As illustrated inFIG. 4B, the second combination part235of the fixing part230and the first housing110can be combined to each other in various manners. For example, the inner surface of the first housing110can include a step, and the step of the first housing110and the second combination part235can be mutually combined. That is, the first housing110can include a step, a recess, an assembly groove, etc. such that the first combination part233of the fixing part230can be mounted on the inner surface of the first housing110. After the fixing part230is mounted in the first housing110, the first housing110and the second housing120can be assembled by ultrasonic welding, etc.

FIG. 5is a section taken along line I-I′ ofFIG. 2of the assembled wearable acoustic device.

As illustrated inFIG. 5, the first housing110includes the microphone mounting part110aand the first acoustic emission path110b. The microphone mounting part110acan include the fixing part230capable of fixing the microphone210, the circuit substrate220, etc. The microphone210can be arranged to secure the first acoustic emission path110b.

In the wearable acoustic device according to an embodiment of the present disclosure, the fixing part230can include the first opening part230a, the second opening part230b, and the third opening part230c.

In the fixing part230, the first opening part230acan be arranged between the circuit substrate220and the acoustic component part240ofFIG. 2. The first opening part230acan be opened in the first direction. The first opening part230acan be arranged in a lower surface of the fixing part230. The first opening part230acan be positioned in the second combination part235. The circuit substrate220and the acoustic component part240can be physically connected through the first opening part230a. For example, a wire for connection between the circuit substrate220and the acoustic component part240can pass through the first opening part230a.

In the fixing part230, the second opening part230bcan be arranged between the microphone210and the first acoustic emission path110b. The second opening part230bcan be opened in the second direction crossing with the first direction. The second opening part230bcan be positioned in the safe mounting part231of the fixing part230. The microphone210can collect sound through the second opening part230b. For example, where the microphone210is a bottom type microphone210in which the microphone hole210h1is designed in the bottom, sound emitted to the first acoustic emission path110bcan be forwarded to the microphone210through the second opening part230b. Where the microphone210is the bottom type microphone210, the circuit substrate220can further include a fourth opening part220acorresponding to the second opening part230b. That is, sound emitted through the first acoustic emission path11bcan pass through the second opening part230band the fourth opening part220aand be collected to the microphone hole210h1of the microphone210.

The third opening part230ccan be arranged to face the first opening part230a. The third opening part230ccan be arranged in a position opposite the first opening part230acentering on the microphone210, and can be opened in the first direction. That is, in the fixing part230, the first opening part230aand the third opening part230ccan be arranged along the first direction. The third opening part230ccan be arranged in an upper surface of the fixing part230. The third opening part230ccan be arranged in the first combination part233.

The third opening part230ccan form a second acoustic emission path110c. That is, the first opening part230aand the third opening part230ccan form an additional acoustic path besides the first acoustic emission path110b. The first opening part230aand the third opening part230ccan secure the path emitting sound even within the microphone mounting part110a. Accordingly, by further securing the path that sound emitted from a speaker of the acoustic component part240flows through, the acoustic performance of the wearable acoustic device100can be improved.

FIG. 6is a graph representing acoustic performance dependent on the existence or non-existence of an opening part in a fixing part of a wearable acoustic device according to an embodiment of the present disclosure.FIG. 6is a graph measuring a sound pressure 1 (SPL) in accordance with each embodiment of the present disclosure.

Embodiment A is an embodiment in which the fixing part230is not provided in the first housing210. Embodiment B is an embodiment in which the fixing part230is provided in the first housing210, and the third opening part230cis provided in the fixing part230. Embodiment C is an exemplary embodiment in which the fixing part230is provided in the first housing210, and the third opening part230cis not provided in the fixing part230. As illustrated inFIG. 6, it can be determined that a difference of an acoustic characteristic or frequency characteristic between embodiment B and embodiment A is not great. Also, it can be determined that embodiment B has an excellent acoustic characteristic or frequency characteristic compared to embodiment C in which the third opening part230cis not provided in the fixing part230.

FIG. 7is an exploded perspective view illustrating a wearable acoustic device according to an embodiment of the present disclosure.FIG. 8is a section of a first housing taken along line II-II′ ofFIG. 7of the assembled wearable acoustic device.

As illustrated inFIG. 7andFIG. 8, in the wearable acoustic device700, the microphone210can be a top type microphone in which a microphone hole210h2is provided in a top surface. At this time, the fixing part230can include the first opening part230aand the third opening part230c. The top surface of the microphone210can be arranged to face the second acoustic emission path110c, so the microphone hole210h2faces the second acoustic emission path110c. The microphone hole210h2of the microphone210can collect sound through the second acoustic emission path110c. That is, the second opening part230bof the fixing part230can be omitted in the wearable acoustic device100earlier illustrated inFIG. 2.

FIG. 9Ais a side view and detailed perspective view illustrating a wearable acoustic device according to an embodiment of the present disclosure.FIG. 9Bis a plan view illustrating the wearable device according to an embodiment of the present disclosure.FIG. 10is an exploded perspective view illustrating the wearable acoustic device according to an embodiment of the present disclosure.

Referring toFIG. 9andFIG. 10, the wearable acoustic device900can include a microphone930, a circuit substrate940, a fixing part950, a first housing910, a second housing920, and the acoustic component part240.

The first housing910includes a microphone mounting part910aand a first acoustic emission path910b. The microphone930can be arranged adjacent to the first acoustic emission path910bwithin the first housing910. The microphone930can be, for example, a top type microphone in which a microphone hole930his provided in a top surface. The first housing910can include the fixing part950. That is, the fixing part950can be provided in the microphone mounting part910a. The fixing part950can be formed integrally with the first housing910, and the fixing part950can be a part forming an inner surface of the first housing910, rather than a separate component. The fixing part950can include a recess950a. That is, the recess950ais dented concavely to a constant depth in the fixing part950.

FIG. 11Ais a plan view illustrating one surface of a first housing in a wearable acoustic device according to an embodiment of the present disclosure.FIG. 11Bis a plan view illustrating one surface of the first housing mounted with a microphone and a circuit substrate, in the wearable acoustic device according to an embodiment of the present disclosure.

Referring toFIG. 11, one surface of the first housing910can include the recess950a. In detail, the fixing part950forming the one surface of the first housing910can include the recess950a. The recess950acan mount the circuit substrate940. The recess950acan be of a shape corresponding to the circuit substrate940such that the recess950acan fix the circuit substrate940. That is, the circuit substrate940can be inserted into the recess950a. That is, the circuit substrate940mounted with the microphone930can be mounted in the recess950a, and the circuit substrate940mounted with the microphone930can be fixed to the recess950aby an adhesive layer as well. That is, the adhesive layer can be further provided between the circuit substrate940and the recess950a. In particular, the adhesive layer can be a double-sided tape; however, the present disclosure is not limited to this, and the circuit substrate940can be fixed to the first housing910using a clip shaped fastener or other fastening device, so the circuit substrate940can be fitted and fixed to the first housing910. The circuit substrate940can be detachable from the first housing910.

FIG. 12Ais a perspective view illustrating an upper end at which a microphone and a circuit substrate are combined with a first housing.FIG. 12Bis a perspective view illustrating a lower end at which the microphone and the circuit substrate are combined with the first housing.

As illustrated inFIG. 12, a top surface of the microphone930can be arranged to face the first acoustic emission path910b. The microphone930can be the top type microphone in which the microphone hole930his provided in the top surface. Accordingly, the microphone930can collect sound through the first acoustic emission path910b.

FIG. 13Ais a side view and a perspective view illustrating a wearable acoustic device according to an embodiment of the present disclosure.FIG. 13Bis a plan view illustrating the wearable acoustic device according to an embodiments of the present disclosure.

Referring toFIG. 13, the wearable acoustic device1300includes a microphone1330, a circuit substrate1340, a fixing part1350, a first housing1310, a second housing1320, and an acoustic component part.

The first housing1310includes a microphone mounting part1310aand a first acoustic emission path1310b. The microphone1330can be arranged adjacent to the first acoustic emission path1310bwithin the first housing1310. The microphone1330can be, for example, a top type microphone in which a microphone hole1330his provided in a top surface. The first housing1310can include the fixing part1350. That is, the fixing part1350can be provided in the microphone mounting part1310a. The fixing part1350can be formed integrally with the first housing1310. That is, the fixing part1350can be a part forming an inner surface of the first housing1310, rather than a separate component. The fixing part1350can include a recess1350a. The recess1350ais dented concavely to a constant depth in the fixing part1350.

FIG. 14Ais a plan view illustrating one surface of a first housing in a wearable acoustic device according to an embodiment of the present disclosure.FIG. 14Bis a plan view illustrating one surface of the first housing mounted with a microphone and a circuit substrate, in the wearable acoustic device according to an embodiment of the present disclosure.

Referring toFIG. 14, one surface of the first housing1310can include the recess1350a. In detail, the fixing part1350forming one surface of the first housing1310can include the recess1350a. The recess1350acan mount the circuit substrate1340. The recess1350acan be of a shape corresponding to the circuit substrate1340such that the circuit substrate1340can be inserted into the recess1350ato fix the circuit substrate1340. That is, the circuit substrate1340mounted with the microphone1330can be mounted in the recess1350a. The circuit substrate1340mounted with the microphone1330can be assembled into the recess1350ain a slide fitting manner.

FIG. 15Ais a perspective view illustrating an upper end at which a microphone and a circuit substrate are combined with a first housing.FIG. 15Bis a perspective view illustrating a lower end at which the microphone and the circuit substrate are combined with the first housing.

As illustrated inFIG. 15, a top surface of the microphone1330can be arranged to face the first acoustic emission path1310b. The microphone1330can be a top type microphone in which the microphone hole1330his provided in the top surface. Accordingly, the microphone1330can collect sound through the first acoustic emission path1310b.

FIG. 16is a perspective view illustrating a wearable acoustic device according to an embodiment of the present disclosure.

Referring toFIG. 16, the wearable acoustic device1600includes a microphone1630, a circuit substrate1640, a fixing part1650, a first housing1610, a second housing1620, and an acoustic component part.

The first housing1610can include a microphone mounting part1610aand a first acoustic emission path1610b. The microphone1630can be arranged adjacent to the first acoustic emission path1610bwithin the first housing1610. The microphone1630can be, for example, a top type microphone in which a microphone hole1630his provided in a top surface. The first housing1610can include the fixing part1650. That is, the fixing part1650can be provided in the microphone mounting part1610a. The fixing part1650can be formed integrally with the first housing1610. That is, the fixing part1650can be not a part forming an inner surface of the first housing1610, rather than a separate component. The fixing part1650can include a recess1650a, which is dented concavely to a constant depth in the fixing part1650.

FIG. 17Ais a plan view illustrating one surface of a first housing in a wearable acoustic device according to an embodiment of the present disclosure.FIG. 17Bis a plan view illustrating one surface of the first housing mounted with a microphone and a circuit substrate, in the wearable acoustic device according to an embodiment of the present disclosure.

Referring toFIG. 17, one surface of the first housing1610can include the recess1650a. In detail, the fixing part1650forming one surface of the first housing1610can include the recess1650a, which can mount the circuit substrate1640. The recess1650acan be of a shape corresponding to the circuit substrate1640such that the recess1650acan fix the circuit substrate1640, by inserting the circuit substrate1640into the recess1650a. An upper end and lower end of the circuit substrate1640each can be inserted into the recess1650a, so that the circuit substrate1640mounted with the microphone1630can be mounted in the recess1650a. The circuit substrate1640mounted with the microphone1630can be assembled into the recess1650ain a fitting manner.

FIG. 18Ais a perspective view illustrating an upper end at which a microphone and a circuit substrate are combined with a first housing.FIG. 18Bis a perspective view illustrating a lower end at which the microphone and the circuit substrate are combined with the first housing.

Referring toFIG. 18, a top surface of the microphone1630can be arranged to face the first acoustic emission path1610b. The microphone1630can be a top type microphone in which the microphone hole1630his provided in a top surface.

Accordingly, the microphone1630can collect sound through the first acoustic emission path1610b.

Referring toFIG. 19, the fixing part1650can include the recess1650a. The recess1650acan include a first recess1910and a second recess1920. An upper end of the circuit substrate1640can be inserted into the first recess1910. A lower end of the circuit substrate1640can be inserted into the second recess1920. At this time, the upper end of the circuit substrate1640is first fitted into the first recess1910as illustrated inFIG. 19Aand then, the lower end of the circuit substrate1640can be fitted and assembled into the second recess1920as illustrated inFIG. 19B.

FIG. 20is a graph representing acoustic performance dependent on a size of a first acoustic emission path in a wearable acoustic device according to an embodiment of the present disclosure.FIG. 20is a graph measuring a sound pressure level (SPL) in accordance with each embodiment.

Referring toFIG. 20, the first housing1610can include a first inner diameter (r), and the first acoustic emission path1610bcan include a second inner diameter (e). The second inner diameter (e) does not need to be a diameter of a circle, and can represent a distance between the fixing part1650and an inner surface of the first housing1610in the first acoustic emission path1610b. In embodiment D, the first inner diameter (r) is 4 15 millimeters (mm), and the second inner diameter (e) is 1 mm In embodiment D, a size of the second inner diameter (e) can be 25% of a size of the first inner diameter (r). In embodiment E, the first inner diameter (r) is 4 mm, and the second inner diameter (e) is 2 mm In the embodiment D, the size of the second inner diameter (e) can be approximately 50% of the size of the first inner diameter (r). In embodiment F, the first inner diameter 20 (r) is approximately 4 mm, and the second inner diameter (e) is approximately 3 mm In embodiment D, the size of the second inner diameter (e) can be approximately 75% of the size of the first inner diameter (r).

As illustrated inFIG. 20, it can be determined that as the size of the first acoustic emission path1610bincreases, an acoustic characteristic or frequency characteristic improves. Where the size of the second inner diameter (e) is approximately 50% or more of the size of the first inner diameter (r) in the wearable acoustic device, an acoustic characteristic or frequency characteristic of a constant level can be secured.

A wearable acoustic device according to an embodiment of the present disclosure includes a first housing forming a first acoustic emission path, a second housing combined with the first housing in a first direction that is substantially parallel to the first acoustic emission path, and an acoustic component part arranged within the second housing, and emitting sound through the first acoustic emission path, and includes at least one microphone arranged adjacent to the first acoustic emission path within the first housing.

In the wearable acoustic device, the first housing can include a microphone mounting part mounting the microphone, the first acoustic emission path being adjacent to the microphone mounting part, and formed along the first direction.

In the wearable acoustic device, the microphone mounting part can further include a fixing part fixing the microphone, and the fixing part can be combined within the first housing.

In the wearable acoustic device, the fixing part can include at least one opening part.

In the wearable acoustic device, a circuit substrate electrically connected with the microphone can be further mounted in the microphone mounting part. And, the fixing part can include a first opening part that is arranged between the circuit substrate and the acoustic component part and is opened in the first direction.

In the wearable acoustic device, the fixing part can further include a second opening part that is arranged between the microphone and the first acoustic emission path and is opened in a second direction crossing with the first direction.

In the wearable acoustic device, the fixing part can further include a third opening part that is arranged in a position opposite the first opening part centering on the microphone and is opened in the first direction, and the first opening part and the third opening part can form a second acoustic emission path along the first direction.

In the wearable acoustic device, the microphone can be arranged to face the first acoustic emission path or the second acoustic emission path.

In the wearable acoustic device, the microphone, the circuit substrate, and the second opening part are arranged along the second direction.

In the wearable acoustic device, the acoustic component part can include a speaker.

In the wearable acoustic device, the first housing can include a first inner diameter. The first acoustic emission path can include a second diameter that is a distance between the fixing part and an inner surface of the first housing. The second diameter can be approximately 50% or more of the first inner diameter.

In the wearable acoustic device according to various exemplary embodiments of the present disclosure, the fixing part can be formed integrally with the first housing.

In the wearable acoustic device, the fixing part can include a recess, and at least a part of the circuit substrate can be arranged within the recess.

A wearable acoustic device includes a nozzle forming a first acoustic emission path, a housing combined with the nozzle in a first direction that is substantially parallel to the first acoustic emission path, a speaker arranged within the housing and emitting sound through the first acoustic emission path, and a microphone arranged adjacent to the first acoustic emission path within the housing.

In the wearable acoustic device, a hole of the microphone is arranged in a second direction crossing the first direction.

In the wearable acoustic device, the nozzle can further include a fixing part that fixes the microphone and a circuit substrate forwarding an electrical signal of the microphone.

In the wearable acoustic device, the microphone can include at least any one of an electronic condenser microphone (ECM) and a micro electro mechanical system (MEMS).

Various embodiments of the present disclosure can mount a microphone without an additional space in a wearable acoustic device worn on an ear. Also, where the mounted microphone is a microphone for noise cancellation, embodiments of the present disclosure can secure the acoustic performance of the wearable acoustic device.

Various embodiments of the present disclosure described above in the present specification and drawings are to only suggest specific examples so as to explain the technological content of the present disclosure and help the understanding of the present disclosure, and are not intended to limit the scope of the present disclosure. Accordingly, the scope of the present disclosure should be construed as including all modified or changes drawn on the basis of the technological spirit of the present disclosure, as defined by the appended claims and their equivalents.