JP2019050515A - Electronic device - Google Patents

Abstract

To make it difficult for sounds from a speaker to enter a sound path through vibration of a surface member.SOLUTION: An electronic device is disclosed, which comprises: a surface member forming a surface part of the electronic device; a sound hole which opens in the surface part in a first direction; a sound path formed in the electronic device and extending through a range that overlaps with the surface member to a second position in a second direction crossing the first direction when viewed from a first position leading to the sound hole in the first direction; a microphone connected to the sound path through the second position; a speaker provided in the electronic device and attached to the surface member; and a plate-like member provided in the electronic device, opposed to the surface member and spaced apart therefrom in the first direction by a first distance, and forming a wall face on a surface member side in the sound path in the first direction.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to an electronic device.

  There is known a technique of forming an acoustic guide on a flip cover of a telephone and disposing a microphone at a predetermined distance from an opening position in a sound path in the acoustic guide.

Japanese Patent Publication No. 2000-509922

  However, in the conventional technology as described above, it is difficult to make it difficult for the sound from the speaker to enter the sound path through the vibration of the surface member (the member forming the device surface portion). When the speaker is attached to the surface member, the surface member is likely to vibrate due to the sound from the speaker. When the surface member vibrates, sound tends to enter the sound path provided adjacent to the surface member. If the sound from the speaker significantly enters the sound path, howling and echo may occur due to being picked up by the microphone disposed at the back of the sound path.

  Therefore, in one aspect, the present invention aims to make it difficult for the sound from the speaker to enter the sound path through the vibration of the surface member.

In one aspect, the electronic device is
A surface member forming a surface portion of the electronic device;
A sound hole opened in the first direction in the surface portion;
A second direction formed inside the electronic device and overlapping the sound member from the first position viewed in the first direction and overlapping the sound hole, overlapping the surface member as viewed in the first direction, and intersecting the first direction A sound path extending to the second position,
A microphone connected to the sound path via the second position;
A speaker provided in the interior and attached to the surface member;
A plate-like member provided in the inside and facing the surface member at a first distance away from the first member in the first direction and forming a wall surface on the surface member side of the sound path in the first direction; An electronic device is provided.

  In one aspect, according to the present invention, it is possible to make it difficult for the sound from the speaker to enter the sound path through the vibration of the surface member.

FIG. 1 is a schematic cross-sectional view showing an electronic device according to an embodiment. It is a top view of electronic equipment by see-through. It is a sectional view of electronic equipment. It is an enlarged view of the Q section of FIG. It is a disassembled perspective view of the structure relevant to a sound path structure. It is explanatory drawing of the transmission path of a sound. It is an exploded perspective view of a comparative example. It is explanatory drawing of the problem which arises in a comparative example. It is explanatory drawing of a speaker origin sound suppression function.

  Hereinafter, each example will be described in detail with reference to the attached drawings.

  FIG. 1 is a schematic cross-sectional view showing an electronic device 1 according to an embodiment. In FIG. 1, an X direction, a Y direction, and a Z direction which are three directions orthogonal to one another are defined. The Z direction (an example of a first direction) corresponds to the thickness direction of the electronic device 1 and corresponds to the direction perpendicular to the plane of the top plate member 12. The X direction is a direction perpendicular to the Z direction and parallel to the short direction of the electronic device 1. However, the X direction may be parallel to the longitudinal direction of the electronic device 1 instead of the lateral direction. Hereinafter, for the sake of description, the Z1 side in the Z direction is referred to as “upper side”, and “top view” means a view viewed in the Z direction from the Z1 side. Also, hereinafter, the device upper surface portion indicates a portion providing the upper surface of the electronic device 1 unless otherwise stated. Further, the device side surface portion is a portion in the electronic device 1 unless otherwise stated, and represents a portion providing a surface on the side having a direction perpendicular to the Z direction as a normal. The same applies to the bottom of the device. FIG. 2 is a top view of the electronic device 1 by perspective. FIG. 3 is a cross-sectional view of the electronic device 1 taken along the YZ plane passing through the center in the X direction.

  The electronic device 1 is a terminal having a communication function, and is, for example, a smartphone, a tablet terminal, a portable game machine, or the like. The electronic device 1 preferably has a hands-free call function.

  The electronic device 1 includes a housing 10, a top plate member 12 (an example of a surface member), a microphone 14, a speaker 16, a sound path structure 30, and a plate member 70 (see FIG. 4).

  The housing 10 is formed of, for example, a resin. The housing 10 forms a device side surface portion and a device bottom surface portion (device bottom surface portion). The housing 10 may further form a part of the upper surface portion of the device (the outer peripheral portion of the top plate member 12). Hereinafter, the inside of the case 10 is a space on the device center side of the device side surface, the device bottom surface, and the device upper surface, and is synonymous with the inside of the electronic device 1 (hereinafter also referred to as “device inside”). . In the housing 10, a substrate and electronic parts (including the microphone 14, the speaker 16 and the like) (not shown) are mounted.

  The housing 10 may be formed of a plurality of housing members. In the present embodiment, as an example, the housing 10 includes a side member 101 that forms an apparatus side surface part and a part of the apparatus top surface (an outer peripheral part of the top plate member 12), and a bottom surface member 102 that forms an equipment bottom surface part. including. In the modification, the side surface member 101 and the bottom surface member 102 may be integrally formed. In addition, below, the area | region of the apparatus upper surface part which the side member 101 forms is also called "frame area | region." The frame region extends to the outer periphery of the top plate member 12 and corresponds to the region from the outer peripheral edge of the top plate member 12 to the outer peripheral edge of the electronic device 1. However, in the modification, the frame area may be eliminated, and the top plate member 12 may extend to the outer peripheral edge of the electronic device 1.

  The electronic device 1 has a sound hole 110 which is opened (perforated) in the vertical direction on the upper surface of the device. In the present embodiment, as an example, the electronic device 1 has the sound hole 110 in the device upper surface portion (surface portion on the top plate member 12 side). This is because the speech recognition rate and speech transmission efficiency increase when the user is moving to the screen.

  The sound hole 110 may be formed in the top plate member 12, may be formed in the housing 10, or may be formed in cooperation with the housing 10 and the top plate member 12. In the present embodiment, as an example, as shown in FIGS. 1 and 3, the sound hole 110 is formed in cooperation with the housing 10 and the top plate member 12. Specifically, the edge on the Y direction Y1 side of the sound hole 110 is formed by the edge on the Y direction Y2 side of the side member 101, and the other edge of the sound hole 110 is in the Y direction of the top plate member 12. It is formed by the notch 122 (refer FIG. 2) of the edge by the side of Y1. Thereby, the designability can be enhanced by narrowing the frame area (eg, narrowing to a length corresponding to the thickness of the side member 101). However, in the modification, the sound hole 110 may be formed in the frame area. In this case, the sound hole 110 is preferably provided adjacent to the top plate member 12.

  The opening shape (the shape in top view) of the sound hole 110 is arbitrary, and is, for example, circular or rectangular (square or rectangular). The dimension of the opening shape of the sound hole 110 is 5 mm or less. For example, with regard to the aperture shape of the sound hole 110, when the maximum dimension in the Y direction is α [mm] and the maximum dimension in the X direction is β [mm], the dimensions α and β are all 5 mm or less. In the present embodiment, as an example, the dimensions α and β are α = 1.0 and β = 1.0.

  The top plate member 12 is a surface member that forms a device surface portion (in the present embodiment, a device top surface portion). The top plate member 12 is a relatively rigid member. The top plate member 12 is a top plate member used, for example, in a liquid crystal panel unit or an organic EL (ElectroLuminescence) panel unit. The top plate member 12 may integrally include a touch panel. In the present embodiment, as an example, the top plate member 12 is a glass plate and covers the upper side of the liquid crystal panel unit 12 b.

  The top plate member 12 has a speaker hole 121 near the end on the Y direction Y 2 side. Moreover, the top plate member 12 has the notch part 122 in the edge by the side of Y direction Y1.

  The microphone 14 is provided inside the device. The microphone 14 generates an electrical signal (audio signal) according to the sound and voice transmitted through the sound path structure 30 (described later). The microphone 14 may be, for example, a capacitor type using a diaphragm.

  The speaker 16 is provided inside the device. The speaker 16 is attached to the top plate member 12 as shown in FIG. That is, the speaker 16 is mounted on the lower surface of the top plate member 12. The speaker 16 is provided at a position facing the speaker hole 121 of the top plate member 12. The sound from the speaker 16 is transmitted to the outside of the device through the speaker hole 121.

  The speaker 16 is preferably provided at the end opposite to the microphone 14 in the Y direction. This is to make it difficult for the microphone 14 to pick up the sound from the speaker 16. In the case of stereo speaker components, it is preferable that the distance between each speaker and the microphone be long. In the present embodiment, as an example, the speaker 16 is attached to the end of the top plate member 12 on the Y direction Y2 side, while the microphone 14 is below the end of the top plate member 12 on the Y direction Y1 side. Provided in

  The sound path structure 30 is formed inside the device. In the present embodiment, the sound path structure 30 is formed in cooperation with the side surface member 101 and a plate-like member 70 described later. However, in the modification, the sound path structure 30 may be formed in cooperation with another member and the plate-like member 70 instead of or in addition to the side surface member 101.

  Here, referring to FIGS. 4 and 5, FIG. 4 is an explanatory view of the sound path structure 30 and the plate-like member 70, and is an enlarged view of a portion Q in FIG. FIG. 5 is an exploded perspective view of the configuration associated with the sound path structure 30 when cut along the YZ plane passing through the center in the X direction. In addition, illustration of the bottom face member 102 is abbreviate | omitted in FIG.

  The sound path structure 30 includes a horizontal sound path 310 (an example of a sound path) and upper and lower sound paths 320.

  The horizontal sound path 310 extends from a first position P1 connected to the sound hole 110 to a second position P2 in a direction parallel to the Y direction (an example of a second direction). That is, the horizontal sound path 310 is a second position P2 offset from the first position P1 immediately below the sound hole 110 (the first position overlapping the sound hole 110 in top view) to the Y direction Y2 side with respect to the first position P1. Extend up to In the present embodiment, as an example, the horizontal sound path 310 extends parallel to the Y direction, but may extend diagonally to the Y direction. That is, the horizontal sound path 310 may extend in any direction in the XY plane. Also, the horizontal sound path 310 may extend in a direction slightly inclined with respect to the XY plane. Further, in the present embodiment, as an example, the horizontal sound path 310 extends linearly, but may extend with bending or bending.

  The horizontal sound path 310 passes through a range overlapping with the top plate member 12 in top view. That is, as shown in FIG. 4, the horizontal sound path 310 passes below the top plate member 12.

  The cross-sectional shape of the horizontal sound path 310 (the cross-sectional shape in the extension direction of the horizontal sound path 310) is arbitrary, but preferably is rectangular (square or rectangular). In the case of a rectangular shape, dimensional control is easy and manufacture is the easiest. The dimension of the cross-sectional shape of the horizontal sound path 310 is preferably 5 mm or less. For example, when the cross-sectional shape of the horizontal sound path 310 is vertical a [mm] and horizontal b [mm], the dimensions a and b are all 5 mm or less. In the present embodiment, as an example, the dimensions a and b are, for example, a = 1.0 and b = 1.0.

  The upper and lower sound paths 320 are connected to an end of the horizontal sound path 310 on the second position P2 side. The upper and lower sound paths 320 extend downward to the microphone 14 in parallel with the Z direction. A waterproof sheet may be provided on the upper and lower sound path 320. In this case, the waterproof sheet is in the form of a sheet and has a waterproof function. The waterproof sheet can be formed, for example, using a trade name “Gore (registered trademark) Acoustic Vent GAW 325” or the like. Further, in this case, the upper and lower sound path 320 may be a room in which the waterproof sheet is disposed, and may include a room in the middle of which the cross-sectional shape at the time of cutting in the XY plane is enlarged.

  Similarly, the cross-sectional shape of the upper and lower sound paths 320 (the cross-sectional shape viewed in the extension direction of the upper and lower sound paths 320) is arbitrary, but is preferably rectangular (square or rectangular). The dimension of the cross-sectional shape of the upper and lower sound path 320 is preferably 5 mm or less. For example, when the cross-sectional shapes of the upper and lower sound paths 320 are vertical c [mm] and horizontal d [mm], the dimensions c and d are all 5 mm or less. In the present embodiment, as an example, the dimensions c and d are, for example, c = 1.0 and d = 1.0.

  In the present embodiment, as an example, the sound path structure 30 includes the horizontal sound path 310 and the upper and lower sound paths 320, but a further sound path may be included between the upper and lower sound paths 320 and the microphone 14.

  In the present embodiment, as an example, as shown in FIG. 5, the side surface member 101 further forms a beam portion 1011 that protrudes to the Y direction Y2 side and extends in the XY plane in addition to the device side surface portion and the like. The beam portion 1011 opposes the top plate member 12 in the vertical direction. In the modification, the beam portion 1011 may be formed of a member separate from the side member 101.

  On the upper surface (the surface on the side facing the top plate member 12) of the beam portion 1011, a recessed portion 90 which is recessed downward is formed. The depth Δ2 (see FIG. 4) of the recess 90 corresponds to a value obtained by adding a distance Δ1 described later and the plate thickness of the plate-like member 70. On the bottom surface (upper surface) 910 of the recess 90, as shown in FIG. 5, a groove 92 forming a horizontal sound path 310 is recessed. The groove 92 extends in the Y direction. The groove 92 is of the type having a bottom, but the end on the Y direction Y 2 side of the groove 92 may be perforated to form the upper and lower sound paths 320. Further, the microphone 14 is attached to the lower surface of the beam portion 1011 at a position corresponding to the opening of the upper and lower sound path 320. The microphone 14 may be attached to the beam portion 1011 via a member such as a rubber packing 141 for improving sealing. Thus, the sound path structure 30 can be formed by using the side surface member 101. In the example shown in FIGS. 4 and 5, the upper surface of the beam portion 1011 is joined to the top plate member 12 through the double-sided adhesive tape 1020 except for the region of the recess 90.

  The plate-like member 70 is in the form of a thin plate. The plate-like member 70 is preferably thin and relatively high in rigidity. The plate-like member 70 is formed of, for example, a resin such as PET (polyethylene terephthalate). The plate member 70 is provided inside the device. As described later, the plate member 70 substantially separates the sound path structure 30 from the top plate member 12, whereby the sound transmitted from the speaker 16 through the top plate member 12 is propagated to the microphone 14. It has a function to make it difficult (hereinafter, also referred to as "speaker-derived sound suppression function").

  As shown in FIG. 4, the plate-like member 70 faces the top plate member 12 at a distance Δ1 (an example of a first distance) in the up-down direction to face. Therefore, the plate member 70 does not directly contact the top plate member 12. Thereby, it is possible to prevent the vibration of the top plate member 12 from being directly transmitted to the plate member 70. The distance Δ1 is smaller than the distance Δ2 by the thickness of the plate-like member 70. The distance Δ1 is significantly smaller than the dimension of the horizontal sound path 310, and a preferred example will be described later.

  The plate member 70 forms the upper wall surface 3101 (the wall surface on the top plate member 12 side) in the horizontal sound path 310 in the vertical direction. That is, the plate-like member 70 covers the groove 92 of the bottom surface 910.

  The plate-like member 70 preferably forms the wall surface 3101 over the entire range except the area directly below the sound hole 110 in the extension range of the horizontal sound path 310 in the Y direction from the viewpoint of enhancing the speaker-derived sound suppression function. Do. That is, the plate-like member 70 covers the upper side of the horizontal sound path 310 except immediately below the sound hole 110. The speaker-derived sound suppression function will be described later.

  The plate-like member 70 may have a notch 72 corresponding to the notch 122 of the top plate 12, as shown in FIG. The plate-like member 70 is provided on the bottom surface 910 of the recess 90 in a manner such that the notch 72 is aligned with the notch 122. As a result, the plate-like member 70 is not visible from the sound hole 110 in top view, and a configuration in which the plate-like member 70 does not inhibit the design can be realized. However, in a modification, the plate-like member 70 may have a form in which a part is visible from the sound hole 110 in top view.

  The extension area of the plate-like member 70 is included in the area of the bottom surface 910 of the recess 90 in top view. That is, the plate-like member 70 extends into the recess 90 and does not extend out of the recess 90. The plate 70 preferably contacts the bottom surface 910 of the recess 90. That is, the plate-like member 70 preferably extends along the bottom surface 910 of the recess 90. Thereby, the gap between the plate member 70 and the bottom surface 910 of the recess 90 is substantially zero except for the area of the groove 92, and the sealing property of the sound path structure 30 can be enhanced. Although the plate member 70 may only be placed on the bottom surface 910 of the recess 90, preferably, the bottom surface 910 of the recess 90 is provided to enhance the sealing property of the sound path structure 30. It is fixed by adhesion or double-sided tape.

  By the way, in recent years, there are many devices that have the function to make calls, such as mobile phones, smartphones, tablets, and personal computers, and even with devices that make it difficult to bring the receiving part and the pronunciation part close to the face Opportunities have increased. For example, when making a call on a notebook computer or a tablet device, a headset is usually used. Recent devices are equipped with a hands-free calling function to make calls without using a headset.

  The hands-free calling function is a function that allows the user to speak and talk to the other party with the microphone while making the other party's sound from the speaker. If the microphone senses the sound while emitting the sound from the speaker, the sound amplification will be made as it is, and the so-called howling will occur. In addition, if the loop gain of amplification does not exceed 1, sound wraparound occurs as echo due to transmission delay. Since both the howling and the echo significantly reduce the call quality, an echo canceling function or the like may be provided. However, if a loud sound is to be output from the speaker so that conversation can be established even if the distance from the terminal is large, the gain is increased to exceed the limit of the echo canceling function, resulting in deterioration of the speech quality.

  In this respect, according to the present embodiment, as described above, since the speaker-derived sound suppressing function is realized by the plate-like member 70, it is possible to suppress howling and echo that may occur during hands-free calling (this point is further illustrated in FIG. See below for details). Thereby, good call quality can be maintained. Also in this embodiment, an echo canceling function may be provided. In this case, the echo canceling function is, for example, a feedback type. In the present embodiment, the top plate member 12 has a relatively high rigidity and almost no time delay, and the sound of the speaker 16 is transmitted in the feedback type, but it is difficult to eliminate the sound having substantially no such time delay. This embodiment is advantageous in that such echo canceling function can reduce the sound that is hard to cancel.

  Further, according to the present embodiment, as described above, since both the microphone 14 and the speaker 16 are provided on the upper side, the user can make a conversation in the hands-free call function while looking at the screen. Therefore, according to the present embodiment, the convenience during hands-free calling is improved, for example, as compared to the case where the sound hole is formed in the side surface of the device (that is, compared to the case where the microphone is provided on the side).

  Further, according to the present embodiment, as described above, since the horizontal sound path 310 is provided, it is possible to enhance the waterproof property against water which may intrude into the microphone 14 through the sound hole 110. That is, according to the present embodiment, the waterproofness can be enhanced as compared with the case where the microphone 14 is disposed immediately below the sound hole 110.

  In addition, if the horizontal sound path 310 is formed to enhance waterproofness, the horizontal sound path 310 tends to pass below the top plate member 12, which tends to cause a problem that occurs in a comparative example described later (FIGS. 7A and 7B). . According to this embodiment, it is possible to eliminate or reduce the problem caused in the comparative example described later while enhancing the waterproofness.

  Here, howling and echo suppression effects will be further described with reference to FIG.

  FIG. 6 is an explanatory view of the sound transmitted from the speaker 16 through the top plate member 12 and is a cross-sectional view of the electronic device 1 when cut along the YZ plane passing through the center in the X direction as in FIG. . FIG. 7A is an exploded perspective view of a comparative example and is a view for comparison with FIG. 5. FIG. 7B is an explanatory view of a problem that occurs in the comparative example. FIG. 8 is an explanatory view of a speaker-derived sound suppression function.

  In the comparative example, as shown in FIG. 7A, the side surface member 101A replacing the side surface member 101 does not have the recess 90, and the plate-like member 70 is not provided. The double-sided adhesive tape 1020A is provided so as to adhere the entire range of the beam portion 1011A excluding the groove 92 to the top plate member 12. The groove 92 forms a sound path 30A extending in the Y direction below the top plate member 12.

  As shown in FIG. 6, the sound generated from the speaker 16 is mainly output to the outside of the device through the speaker hole 121 (see the arrow R0 in FIG. 6), but the top plate member 12 due to the vibration of the speaker 16 Vibrate (see arrow R1 in FIG. 6). That is, the vibration of the speaker 16 is transmitted to the top plate member 12, and the top plate member 12 vibrates. This is because the top plate member 12 is a relatively rigid member and the speaker 16 is directly attached to the top plate member 12. In other words, since the speaker 16 is attached to a relatively rigid member in order to generate vibrations, it is effective to attach the speaker 16 to the top plate member 12, but on the other hand, the vibration transmitted to the top plate member 12 is It can be a problem.

  In this point, in the comparative example, as shown in FIG. 7B, the vibration of the speaker 16 is transmitted to the end of the top plate member 12 (the end on the sound hole side) to form the upper wall of the sound path 30A. The end of the plate member 12 vibrates (see arrow R2 in FIG. 7B). As a result, the vibration (sound) of the speaker 16 is easily picked up by the microphone 14 through the sound path 30A. When the sound of the speaker 16 is picked up by the microphone 14, only the sound by the user's speech (see the arrow R4 in FIG. 7B) is not in the state picked up by the microphone 14 and causes howling or echo.

  More specifically, the vibration of the speaker is transmitted to the panel and transmitted to the end of the panel on the microphone side. As in the comparative example, when the vibration transmission structure exists in part of the sound path of the microphone, the vibration of the end of the panel is treated like the sound. In the comparative example, as a result, in order to cancel the sound of the vibration cause by the echo canceling function to ensure the communication quality, the volume of the speaker is limited.

  Generally, when the user talks hands-free, the other party's voice is generated from the speaker, but the microphone is countered as vibration so that the sound transmitted from the outside of the device to the microphone becomes the main, Take measures to prevent vibration of the speakers. At this time, vibration countermeasures for the speaker are often minimized. If vibration isolation is performed in order to take measures against vibration of the speaker, the force to move the diaphragm of the speaker up and down is weakened. That is, when the fixed magnet side is fixed to the housing, a sound is produced by moving the diaphragm up and down. When the connection with the housing floats with rubber or the like, the reaction of the drive of the diaphragm causes the magnet to move in the direction of escaping, and as a result, the sound becomes smaller.

  On the other hand, according to the present embodiment, since the plate-like member 70 is provided, it is possible to solve or reduce the problems occurring in the above-described comparative example. Specifically, in the present embodiment, as shown in FIG. 8, the vibration of the speaker 16 is transmitted to the end of the top plate member 12 (the end portion on the sound hole side), so that the end portion of the top plate member 12 is Vibrate (see arrow R2 in FIG. 8). According to the present embodiment, as described above, by providing the plate-like member 70, the end of the top plate member 12 does not form the upper wall surface of the sound path, so the vibration of the end of the top plate member 12 Are difficult to be picked up by the microphone 14 via the sound path structure 30. Therefore, according to the present embodiment, it is easy to ensure the communication quality without restricting the volume of the speaker 16.

  Next, a preferable example of the distance Δ1 corresponding to the gap between the plate member 70 and the top plate member 12 in the vertical direction will be described.

  The distance Δ1 is preferably 0.016 mm or more. Thereby, even when the top plate member 12 vibrates at 80 dB and 100 Hz due to the sound from the speaker 16, interference (physical interference) between the top plate member 12 and the plate-like member 70 can be prevented. Although 80 dB and 100 Hz are assumed worst conditions, other numerical values may be used depending on the characteristics of the speaker 16 or the like.

  The distance Δ1 is preferably 20% or less of the maximum value of the width of the sound path (the above-mentioned dimensions α, β, a, b, c, d). For example, when the dimensions α, β, a, b, c, and d are all 1 mm, the distance Δ1 is 0.2 mm or less. Thereby, the ratio of the sound that can be transmitted through the gap between the plate member 70 and the top plate member 12 out of the sound (see the arrow R4 in FIG. 8) by the user's speech is a level without influence (in this case, It can be reduced to 20% or less.

  As mentioned above, although each Example was explained in full detail, it is not limited to a specific example, A various deformation | transformation and change are possible within the range described in the claim. In addition, it is also possible to combine all or a plurality of the components of the above-described embodiment.

  For example, in the above-described embodiment, the electronic device 1 includes the hands-free calling function, but may not include the hands-free calling function. For example, when the electronic device 1 is small, the distance between the speaker hole 121 and the sound hole 110 is not sufficient, and a state similar to hands-free calling (a state in which sound does not easily reach the sound hole 110) may be formed. The effect of this embodiment can be useful.

  Further, in the embodiment described above, the plate-like member 70 is in the form of a rectangle having the notch portion 72 in order to enhance the sealability of the sound path structure 30 immediately below the sound hole 110, but is limited thereto. Absent. For example, the plate-like member 70 may have another shape having the notches 72 or may have a rectangular shape not having the notches 72. In the case of the rectangular form which does not have the notch part 72, the edge by the side of the Y direction Y1 of the plate-like member 70 may be set to the edge by the side of the Y direction Y2 of the notch 72.

In addition, the following additional remarks are disclosed regarding the above-mentioned example.
[Supplementary Note 1]
An electronic device,
A surface member forming a surface portion of the electronic device;
A sound hole opened in the first direction in the surface portion;
A second direction formed inside the electronic device and overlapping the sound member from the first position viewed in the first direction and overlapping the sound hole, overlapping the surface member as viewed in the first direction, and intersecting the first direction A sound path extending to the second position,
A microphone connected to the sound path via the second position;
A speaker provided in the interior and attached to the surface member;
A plate-like member provided in the inside and facing the surface member at a first distance away from the first member in the first direction and forming a wall surface on the surface member side of the sound path in the first direction; Electronics.
[Supplementary Note 2]
The plate-like member forms the wall surface over the entire range of the extension range of the sound path in the second direction except the range overlapping with the sound hole as viewed in the first direction. Electronic device described in.
[Supplementary Note 3]
The beam portion extending from the side surface of the electronic device to the inside and facing the surface member in the first direction, the surface facing the surface member facing the surface in the first direction And a beam portion forming a recess recessed on the side away from the surface member, and forming a groove forming the sound path on the bottom surface of the recess,
The electronic device according to Appendix 1 or 2, wherein the plate-like member extends along the bottom surface of the recess in a manner covering the groove.
[Supplementary Note 4]
The electronic device according to appendix 3, wherein the beam portion is integrally formed with the side surface portion.
[Supplementary Note 5]
The surface member is a glass plate,
The electronic device according to appendix 3, wherein the sound hole is located between an edge of the surface member and the side surface in the second direction.
[Supplementary Note 6]
The electronic according to any one of Appendices 1 to 5, wherein in the surface member, the sound hole is formed on one end side in the second direction, and the speaker is attached on the other end side in the second direction. machine.
[Supplementary Note 7]
The electronic device according to any one of appendices 1 to 6, wherein the first distance is 0.10 mm or more.
[Supplementary Note 8]
Additional clause any one of supplementary notes 1-7 in which said 1st distance is 20% or less of the larger one of the length and the horizontal dimension in the cross-sectional shape of the said sound path seen in said 2nd direction Electronic device described in.
[Supplementary Note 9]
The electronic device according to any one of appendices 1 to 7, wherein the first distance is 0.2 mm or less.

Reference Signs List 1 electronic device 10 case 12 top plate member 14 microphone 16 speaker 30 sound path structure 30 A sound path 70 plate member 72 notch portion 90 recess portion 92 groove portion 101 side member 102 bottom member 110 sound hole 121 speaker hole 122 notch portion 310 Horizontal sound path 320 Upper and lower sound path 910 Bottom surface 1011 Beam 1020 Double-sided tape 3101 Wall surface

Claims (6)

An electronic device,
A surface member forming a surface portion of the electronic device;
A sound hole opened in the first direction in the surface portion;
A second direction formed inside the electronic device and overlapping the sound member from the first position viewed in the first direction and overlapping the sound hole, overlapping the surface member as viewed in the first direction, and intersecting the first direction A sound path extending to the second position,
A microphone connected to the sound path via the second position;
A speaker provided in the interior and attached to the surface member;
A plate-like member provided in the inside and facing the surface member at a first distance away from the first member in the first direction and forming a wall surface on the surface member side of the sound path in the first direction; Electronics.   The plate-like member forms the wall surface over the entire range of the extension range of the sound path in the second direction except the range overlapping with the sound hole as viewed in the first direction. The electronic device as described in 1. The beam portion extending from the side surface of the electronic device to the inside and facing the surface member in the first direction, the surface facing the surface member facing the surface in the first direction And a beam portion forming a recess recessed on the side away from the surface member, and forming a groove forming the sound path on the bottom surface of the recess,
The electronic device according to claim 1, wherein the plate-like member extends along the bottom surface of the recess in a manner to cover the groove.   The electronic device according to any one of claims 1 to 3, wherein the first distance is 0.10 mm or more.   5. The method according to claim 1, wherein the first distance is equal to or less than 20% of a larger one of vertical and horizontal dimensions of a cross-sectional shape of the sound path viewed in the second direction. The electronic device as described in a paragraph.   The electronic device according to any one of claims 1 to 4, wherein the first distance is 0.2 mm or less.

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