JP2022166359A - Electronic apparatus - Google Patents

Abstract

To keep the light-receiving state of a light-receiving element in a good state by preventing positional deviation of a light guide body with respect to an optical substrate.SOLUTION: There is provided an electronic apparatus in which an optical substrate (22) is provided on a back side of a holder (18); a light guide body (28) is provided on a front side of the holder (18), the light guide body (28) having a first light guide part (30) guiding light to a photodiode (24); a substrate support member (40) is provided on a back side of the optical substrate (22) in a cabinet (16), the substrate support member (40) fixed to the cabinet (16) by tightening a screw (42) and having a pressing protrusion (46) that presses the back side of the optical substrate (22); a locking hole (16v) is formed in the cabinet (16), the locking hole (16v) being located in front of a head (42a) of the screw (42); and a locking claw (52) locked to the locking hole (16v) of the cabinet (16) is formed on the substrate support member (40).SELECTED DRAWING: Figure 6

Description

The present invention relates to electronic equipment such as television receivers.

In recent years, many electronic devices such as television receivers can be remotely controlled by an external operating device such as a remote controller. The electronic device disclosed in Japanese Patent Laid-Open No. 2002-200012 is configured to allow remote control by an external operating device through the following configuration.

The cabinet is formed with an entrance for allowing light (infrared rays) to enter according to an operation instruction from an external operation device. A holder is provided in the cabinet, and an optical substrate is provided on the rear side of the holder. A light receiving element for receiving light is mounted on the optical substrate. A light guide is provided on the front side of the holder, and the light guide has a light guide portion that guides light corresponding to an operation instruction from the external operating device to the light receiving element. The tip of the light guide engages with the entrance of the cabinet. Furthermore, a board support member for supporting the optical board is provided on the back side of the optical board inside the cabinet, and the board support member is fixed to the cabinet by tightening screws. The substrate supporting member has a pressing projection that presses the back surface of the optical substrate.

JP 2020-188409 A

In the electronic device disclosed in Patent Document 1, the pressing projection of the substrate support member presses the back surface of the optical substrate by the forward pressing force from the head of the screw, and the light guide is pushed through the optical substrate and the holder to the cabinet. The inner wall surface side is pressed, but the forward pressing force from the head of the screw is not large. Therefore, when an external force is applied to the light guide portion of the light guide from the outside of the cabinet by a user's finger or the like, the light guide moves and the position of the light guide is shifted with respect to the optical substrate. Light reception becomes unstable.

Note that the above-described problem occurs not only when the light-receiving element receives light from an external operation device, but also when it receives light such as external light.

Accordingly, it is an object of one embodiment of the present invention to prevent misalignment of a light guide body with respect to an optical substrate and maintain a favorable light receiving state of a light receiving element.

According to one aspect of the present invention, a cabinet provided with an entrance for allowing light to enter, a holder provided in the cabinet, and a light receiving element provided on the back side of the holder for receiving light are mounted. and a light guide section provided on the front side of the holder for guiding light to the light receiving element, the tip of the light guide section engaging the entrance of the cabinet. and a substrate that is provided on the back side of the optical substrate in the cabinet, is fixed to the cabinet by tightening screws, has a pressing projection that presses the back surface of the optical substrate, and supports the optical substrate. a support member, wherein a locking hole is formed in the cabinet, the locking hole of the cabinet is located forward of the head of the screw, and the board supporting member is fitted into the locking hole of the cabinet. A locking pawl for locking is formed.

According to one aspect of the present invention, it is possible to prevent misalignment of the light guide body with respect to the optical substrate, and maintain a favorable light receiving state of the light receiving element.

1 is a schematic front view of a television receiver according to this embodiment; FIG. FIG. 2 is an enlarged view of part II in FIG. 1; 3 is an enlarged cross-sectional view taken along line III-III in FIG. 2; FIG. 3 is an enlarged cross-sectional view taken along line IV-IV in FIG. 2; FIG. FIG. 3 is an enlarged cross-sectional view taken along line VV in FIG. 2; 3 is an enlarged cross-sectional view taken along line VI-VI in FIG. 2; FIG. 4 is a perspective view of a substrate supporting member in the television receiver according to the embodiment; FIG. FIG. 8 is a front view of the substrate supporting member shown in FIG. 7; FIG. 3 is a diagram showing a characteristic portion of a modified example of the present embodiment, and is a diagram corresponding to an enlarged cross-sectional view taken along the line VI-VI in FIG. 2;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the claims and specification of the present application, the width direction refers to the width direction of an electronic device such as a television receiver or the width direction of a cabinet, and in this embodiment, is synonymous with the left-right direction. . As shown in the drawings, the front side of the television receiver or cabinet is referred to as the front side, and the rear side of the television receiver or cabinet is referred to as the rear side. One widthwise side of the television receiver or cabinet is referred to as the left side, and the other widthwise side of the television receiver or cabinet is referred to as the right side. One side of the television receiver or cabinet in the height direction is called the upper side, and the other side of the television receiver or the cabinet in the height direction is called the lower side.

[Embodiment]
This embodiment will be described with reference to FIGS. 1 to 8. FIG. FIG. 1 is a schematic front view of a television receiver according to this embodiment. FIG. 2 is an enlarged view of part II in FIG. FIG. 3 is an enlarged cross-sectional view along line III-III in FIG. FIG. 4 is an enlarged cross-sectional view taken along line IV-IV in FIG. FIG. 5 is an enlarged cross-sectional view taken along line VV in FIG. FIG. 6 is an enlarged cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a perspective view of a board support member in the television receiver according to this embodiment. 8 is a front view of the substrate support member shown in FIG. 7. FIG.

(Display panel 12, etc.)
As shown in FIGS. 1 to 3, a television receiver 10 according to this embodiment is an electronic device that can be remotely controlled by a remote control RC as an external operating device. The television receiver 10 includes a rectangular display panel 12 for displaying images, and the display panel 12 extends in the left-right direction (width direction). The display panel 12 is a liquid crystal panel in which liquid crystal (not shown) is sealed between an array substrate (not shown) and a color filter substrate (not shown). The television receiver 10 also includes a rectangular frame 14 that surrounds and holds the display panel 12, and the frame 14 extends in the left-right direction. The frame 14 is made of metal such as aluminum or iron.

An organic EL panel including organic light-emitting diode elements (not shown) may be used as the display panel 12 instead of the liquid crystal panel.

(Cabinet 16)
As shown in FIGS. 2 to 4, the television receiver 10 has a cabinet 16 provided below the frame 14, and the cabinet 16 extends in the left-right direction. The cabinet 16 is made of, for example, metal such as aluminum or iron, or resin. At the center of the front surface of the cabinet 16 in the left-right direction, an entrance 16i is formed for allowing light (infrared rays) to enter according to an operation instruction from the remote controller RC. An emission opening 16e for emitting light (LED light) corresponding to the operating state of the television receiver 10 is formed in the vicinity of the entrance opening 16i on the front surface of the cabinet 16. FIG. Two sound holes 16h for introducing sound are formed in the vicinity of the output port 16e on the front surface of the cabinet 16, and the two sound holes 16h are separated in the left-right direction.

For convenience of explanation, only one outlet 16e of the cabinet 16 is illustrated, but the number of outlets 16e of the cabinet 16 may be changed to plural.

(Holder 18)
As shown in FIGS. 3 and 4, a holder 18 is provided inside the cabinet 16, and the holder 18 extends in the left-right direction. The holder 18 is fixed to the cabinet 16 by tightening a plurality of screws 20. As shown in FIG. The holder 18 is made of, for example, metal such as aluminum or iron, or resin.

(Optical substrate 22)
As shown in FIGS. 3 to 5, an optical substrate 22 is provided on the back side of the holder 18, and the optical substrate 22 extends in the left-right direction. The optical substrate 22 is positioned with respect to the cabinet 16 by substrate positioning pins (not shown) provided on the inner wall surface 16 f of the cabinet 16 .

A photodiode 24 as a light receiving element for receiving light (infrared rays) is mounted on the front surface of the optical substrate 22 . The photodiode 24 outputs an electrical signal corresponding to the received light. A light emitting diode 26 is mounted near the photodiode 24 on the front surface of the optical substrate 22 as a light emitting element that emits light according to the operating state of the television receiver 10 such as recording state. The optical substrate 22 controls the light receiving operation of the photodiode 24 and the light emitting operation of the light emitting diode 26 . The optical board 22 is connected to a main board (not shown) for controlling the entire television receiver 10 .

Although only one light-emitting diode 26 is shown for convenience of explanation, the number of light-emitting diodes 26 may be increased according to the type of operating state of the television receiver 10 .

(Light guide 28)
As shown in FIGS. 3 to 5, a light guide 28 is provided on the left side of the holder 18 on the back side, and the light guide 28 is made of transparent resin. The light guide 28 has a flat first light guide 30 on its left side that guides light (infrared rays) to the photodiode 24 according to an operation instruction from the remote controller RC. The first light guide section 30 is arranged at a position aligned with (opposed to) the photodiode 24 , and the tip of the first light guide section 30 is engaged with the entrance 16 i of the cabinet 16 . The light guide member 28 has a pin-shaped second light guide portion 32 on its right portion that guides the light from the light emitting diode 26 to the outside of the cabinet 16 . The second light guide part 32 is arranged at a position aligned with the light emitting diode 26 , and the tip of the second light guide part 32 is engaged with the exit port 16 e of the cabinet 16 .

For convenience of explanation, only one second light guide portion 32 is illustrated, but the number of second light guide portions 32 may be increased.

(Microphone board 34)
As shown in FIGS. 3 and 6, a microphone substrate 34 is provided on the right side of the light guide 28 on the back side of the holder 18, and the microphone substrate 34 extends in the left-right direction. The microphone board 34 is positioned with respect to the cabinet 16 by the board positioning pins. Two microphone elements 36 for collecting sound are mounted on the rear surface (rear side surface) of the microphone substrate 34 . The two microphone elements 36 are separated in the left-right direction, and each microphone element 36 is arranged at a position matching the sound hole 16 h of the cabinet 16 . Two through holes 34h are formed in the microphone substrate 34 to communicate the microphone element 36 and the sound hole 16h side of the cabinet 16, and the two through holes 34h are separated in the left-right direction. The microphone board 34 controls sound collection operations of two microphone elements 36 and is connected to a main board (not shown).

Instead of mounting the two microphone elements 36 on the rear surface of the microphone substrate 34, they may be mounted on the front surface (front side surface) of the microphone substrate 34. In this case, the microphone substrate 34 is formed with a through hole 34h. It doesn't have to be.

(Spacer 38)
As shown in FIGS. 3 and 6, two spacers 38 are sandwiched between the inner wall surface 16f of the cabinet 16 and the front side surface of the microphone board 34. directionally separated. Each spacer 38 has a circular opening 38a communicating with each sound hole 16h of the cabinet 16, and the opening area of the opening 38a is set larger than the cross-sectional area of the sound hole 16h of the cabinet 16. . Each spacer 38 is made of an elastic material such as silicone rubber, and is compressed by the inner wall surface 16 f of the cabinet 16 and the microphone substrate 34 .

Here, a sound path, which is a passage of sound, is formed from the sound hole 16h of the cabinet 16 to the microphone element 36. As shown in FIG. In other words, the sound hole 16h of the cabinet 16, the opening 38a of the spacer 38, and the through hole 34h of the microphone board 34 each constitute a part of the sound path.

(Substrate support member 40, etc.)
As shown in FIGS. 3 and 6 to 8, a substrate support member 40 for supporting the optical substrate 22 is provided on the rear side of the optical substrate 22 in the cabinet 16, and the substrate support member 40 extends in the left-right direction. ing. The substrate support member 40 is made of metal such as aluminum or resin, and is fixed to the cabinet 16 by tightening two screws 42 . Two insertion holes 40h for inserting the screws 42 are formed in the board support member 40, and the two insertion holes 40h are separated in the left-right direction. The substrate support member 40 is positioned with respect to the cabinet 16 by a support member positioning pin 44 provided on the inner wall surface 16 f of the cabinet 16 . A fitting hole 40v for fitting a positioning pin 44 for the supporting member is formed in the central portion of the substrate supporting member 40 in the left-right direction.

The substrate support member 40 has a plurality of pressing projections 46 (46A, 46B, 46C) that press the back surface of the optical substrate 22, and each pressing projection 46 protrudes forward. The pressing locations of the plurality of pressing protrusions 46 are locations on the back surface of the optical substrate 22 avoiding electronic components. The plurality of pressing protrusions 46 are arranged at intervals in the left-right direction. Of the plurality of pressing protrusions 46, pressing protrusions 46A and 46C located on both end sides in the left-right direction are formed in the shape of small pieces extending in the vertical direction. Of the plurality of pressing protrusions 46, the pressing protrusion 46B located on the center side in the left-right direction is formed in an L shape when viewed from the side.

(Relationship between board support member 40 and cabinet 16)
As shown in FIGS. 6 to 8, the inner wall surface of the cabinet 16 is provided with two screw bosses 48 into which the screws 42 are screwed, and the two screw bosses 48 are separated in the left-right direction. Two screw bosses 48 form part of the cabinet 16 . A guide rib 50 for guiding the outer peripheral surface of each screw boss 48 is formed on the periphery of each insertion hole 40 h on the front surface of the board support member 40 .

Two locking holes 16v are formed in the cabinet 16, and the two locking holes 16v are separated in the left-right direction. Each locking hole 16v of the cabinet 16 is positioned forward of the head 42a of the screw 42 and vertically faces the end surface of the optical substrate 22. As shown in FIG. Each locking hole 16v of the cabinet 16 is located forward of the tip end surface (rear end surface) of each screw boss 48 . The board support member 40 is formed with two locking claws 52 that engage the locking holes 16v of the cabinet 16 from below, and the two locking claws 52 are separated in the left-right direction. Each of the locking claws 52 of the board support member 40 is arranged directly above the pressing projection 46 and formed in an L shape when viewed from the side.

(Effect)
Each screw 42 is tightened while each locking claw 52 of the board support member 40 is locked to each locking hole 16v of the cabinet 16 . Then, a forward pressing force is applied from the heads 42a of the screws 42, and the contact portions between the locking claws 52 of the board supporting member 40 and the locking holes 16v of the cabinet 16 are pushed by reaction force. A forward pushing force from 40 acts. That is, since each locking claw 52 of the board support member 40 is locked in each locking hole 16v positioned forward of the head 42a of each screw 42, the forward direction from the head 42a of each screw 42 In addition to the pressing force, a forward pressing force from the substrate supporting member 40 due to the reaction force of the contact portion acts.

Therefore, the plurality of pressing protrusions 46 of the substrate support member 40 press the back surface of the optical substrate 22 with a sufficient pressing force, and the light guide 28 and the microphone substrate 34 are placed inside the cabinet 16 via the optical substrate 22 and the holder 18. It is pressed against the wall surface 16f with a sufficient pressing force. In particular, since each guide rib 50 guides the outer peripheral surface of each screw boss 48, each screw 42 is prevented from being displaced with respect to the cabinet 16, and the forward pressing force from the head portion 42a of each screw 42 is prevented. can be stabilized. Since the plurality of pressing protrusions 46 are arranged at intervals in the width direction, the pressing state of the substrate support member 40 against the rear surface of the optical substrate 22 can be stabilized.

As a result, according to this embodiment, even if an external force is applied to the first light guide portion 30 of the light guide 28 from the outside of the cabinet 16 by a user's finger or the like, the light guide 28 will not move toward the optical substrate 22 (holder 18). positional deviation can be sufficiently prevented. Therefore, according to this embodiment, while the light receiving state of the photodiode 24 is maintained in a good state, the television receiver 10 can be stably remotely operated by the remote control RC, and the light from the light exit 16e of the cabinet 16 can be stably controlled. A good output state can be maintained.

Further, according to the present embodiment, it is possible to sufficiently prevent the positional deviation of the microphone substrate 34 with respect to the holder 18 . Therefore, according to the present embodiment, it is possible to suppress the blurring of the sound path and improve the sound collecting performance of each microphone element 36 .

(Modification of this embodiment)
This embodiment will be described with reference to FIG. FIG. 9 is a diagram showing a characteristic portion of a modification of the present embodiment, and is a diagram corresponding to an enlarged cross-sectional view taken along line VI-VI in FIG. For convenience of explanation, members having the same functions as the members explained in this embodiment are given the same reference numerals, and the explanation thereof will not be repeated.

As shown in FIG. 9, in the modified example of the present embodiment, the tip side of each locking claw 52 of the board support member 40 is formed in a wedge shape so that the thickness gradually increases toward the rear. Therefore, by increasing the area (contact area) of the contact portions between the locking holes 16v of the cabinet 16 and the locking claws 52 of the board support member 40, the front direction from the board support member 40 due to the reaction force on the contact portions is increased. can be increased.

Thus, according to the modified example of the present embodiment, it is possible to sufficiently prevent displacement of the light guide 28 with respect to the optical substrate 22 and displacement of the microphone substrate 34 with respect to the holder 18 . Therefore, according to the modified example of the present embodiment, the effects of the above-described present embodiment can be further enhanced.

(Other embodiments)
The television receiver 10 may have a similar configuration not only when the photodiode 24 receives light from the remote controller RC but also when it receives light such as external light. Also, the technical concept applied to the television receiver 10 (see FIG. 1) may be applied to electronic devices other than the television receiver 10, such as smartphones, mobile phones, tablet terminals, and heat cookers. .

〔summary〕
An electronic device according to aspect 1 of the present invention includes: a cabinet having an entrance for allowing light to enter; a holder provided in the cabinet; An optical substrate on which an element is mounted, and a light guide section provided on the front side of the holder for guiding light to the light receiving element, the tip of the light guide section engaging with the entrance of the cabinet. and a pressing projection that is provided on the back side of the optical substrate in the cabinet, is fixed to the cabinet by tightening screws, and presses the back surface of the optical substrate, and the optical substrate. and a board support member for supporting the cabinet, wherein a locking hole is formed in the cabinet, the locking hole of the cabinet is located forward of the head of the screw, and the board support member is provided with the board support member of the cabinet. A locking pawl is formed for locking into the locking hole.

According to the above configuration, the screws are tightened while the locking claws of the board support member are locked in the locking holes of the cabinet. As a result, a forward pressing force is applied from the head of the screw, and a reaction force is applied to the contact portion between the locking claw of the board supporting member and the locking hole of the cabinet, thereby pushing forward from the board supporting member. Directional pressing force works. That is, since the locking claws of the board support member are locked in the locking holes located forward of the screw heads, in addition to the forward pressing force from the screw heads, A forward pressing force from the substrate supporting member acts due to the reaction force of the contact portion.

Therefore, the pressing protrusion of the substrate supporting member presses the back surface of the optical substrate with a sufficient pressing force, and the light guide is sufficiently pressed toward the inner wall surface of the cabinet via the optical substrate and the holder. Pressed by pressure. As a result, even if an external force is applied to the light guide portion of the light guide from the outside of the cabinet by a user's finger or the like, the light guide can be prevented from being displaced with respect to the optical substrate (the holder). The light receiving state of the light receiving element can be maintained in a good state.

In the electronic device according to aspect 2 of the present invention, in aspect 1, the number of the pressing projections may be plural, and the plurality of pressing projections may be arranged at intervals in the width direction.

According to the above configuration, it is possible to stabilize the state in which the substrate support member presses the rear surface of the optical substrate.

According to aspect 3 of the present invention, in the electronic device according to aspect 1 or 2, a screw boss for screwing the screw is provided on the inner wall surface of the cabinet, and an insertion hole for inserting the screw is formed in the board support member. A guide rib for guiding the outer peripheral surface of the screw boss may be formed on the peripheral edge of the insertion hole on the front surface of the board support member.

According to the above configuration, since the guide rib guides the outer peripheral surface of the screw boss, the position of the screw relative to the cabinet is prevented, and the forward pressing force from the head of the screw is prevented. can be stabilized.

In the electronic device according to aspect 4 of the present invention, in any one of aspects 1 to 3, the tip side of the locking claw may be formed in a wedge shape so as to gradually thicken toward the rear.

According to the above configuration, the area (contact area) of the contact portion between the locking hole of the cabinet and the locking pawl of the board support member is increased, and the contact portion receives a reaction force from the board support member. can increase the forward pressing force.

According to aspect 5 of the present invention, in any one of aspects 1 to 4, the light guide section may guide light corresponding to an operation instruction from an external operating device to the light receiving element.

According to the above configuration, the electronic device can be remotely controlled stably by the external operating device.

An electronic device according to aspect 6 of the present invention is an electronic device according to any one of aspects 1 to 5, in which an emission port for emitting light is formed and a light emitting element that emits light is mounted, and the light guide includes: A second light guide portion may be provided for guiding light from the light emitting element to the outside of the cabinet, and a tip portion of the second light guide portion may be engaged with the exit port of the cabinet.

According to the above configuration, even if an external force is applied to the light guide portion of the light guide from the outside of the cabinet, it is possible to prevent the light guide from being displaced with respect to the optical substrate (the holder). It is possible to keep the light output state of the output port in a good state.

Aspect 7 of the present invention is an electronic device according to any one of aspects 1 to 6, wherein a sound hole for introducing sound into the cabinet is formed, and the sound hole is provided on the front side of the holder to collect sound. A microphone substrate on which a microphone element that produces sound is mounted, and an opening that is sandwiched between the inner wall surface of the cabinet and the microphone substrate, is made of an elastic material, and communicates with the sound hole of the cabinet. and a spacer having

According to the above configuration, the pressing protrusion of the substrate support member presses the back surface of the optical substrate with a sufficient pressing force, and the microphone substrate is pushed toward the inner wall surface of the cabinet through the optical substrate and the holder. It is pressed with a sufficient pressing force. Therefore, it is possible to prevent the microphone substrate from being displaced with respect to the holder. Therefore, it is possible to suppress the blurring of the sound path and improve the sound collecting performance of the microphone element.

[Additional notes]
The present invention is not limited to the above-described embodiments, but can be modified in various ways within the scope of the claims, and can be obtained by appropriately combining technical means disclosed in different embodiments. is also included in the technical scope of the present invention.

10 Television receivers (electronic equipment)
REFERENCE SIGNS LIST 12 display panel 16 cabinet 16i inlet 16e outlet 16h sound hole 16f inner wall surface 16v locking hole 18 holder 22 optical substrate 24 photodiode (light receiving element)
26 light emitting diode (light emitting element)
28 light guide 30 first light guide 32 second light guide 34 microphone substrate 34h through hole 36 microphone element 38 spacer 38a opening 40 substrate support member 40h insertion hole 40v fitting hole 42 screw 42a head 46 pressing projection 46A Pressing protrusion 46B Pressing protrusion 46C Pressing protrusion 48 Screw boss 50 Guide rib 52 Locking claw RC Remote controller (external operating device)

Claims (7)

a cabinet formed with an entrance for allowing light to enter;
a holder provided within the cabinet;
an optical substrate provided on the back side of the holder and mounted with a light receiving element for receiving light;
a light guide provided on the front side of the holder and having a light guide portion for guiding light to the light receiving element, the tip portion of the light guide portion being engaged with the entrance of the cabinet;
a substrate support member provided on the back side of the optical substrate in the cabinet, fixed to the cabinet by tightening screws, and having a pressing projection for pressing the back surface of the optical substrate, and supporting the optical substrate; , and
An engaging hole is formed in the cabinet, the engaging hole in the cabinet is located forward of the head of the screw, and the board support member has an engaging claw to be engaged in the engaging hole in the cabinet. An electronic device that is formed. 2. The electronic device according to claim 1, wherein the number of said pressing projections is plural, and said plurality of pressing projections are arranged at intervals in the width direction. A screw boss for screwing the screw is provided on the inner wall surface of the cabinet, an insertion hole for inserting the screw is formed in the substrate support member, and the screw boss is formed on the periphery of the insertion hole in the front surface of the substrate support member. 3. The electronic device according to claim 1, further comprising guide ribs for guiding the outer peripheral surface of the electronic device. 4. The electronic device according to any one of claims 1 to 3, wherein a tip side of said locking claw is formed in a wedge shape so as to gradually become thicker toward the rear. 5. The electronic device according to any one of claims 1 to 4, wherein said light guide section guides light to said light receiving element according to an operation instruction from an external operation device. An exit port for emitting light is formed, a light emitting element for emitting light is mounted, and the light guide body has a second light guide section for guiding light from the light emitting element to the outside of the cabinet. 6. The electronic device according to any one of claims 1 to 5, wherein a tip portion of said second light guide portion is engaged with said exit port of said cabinet. A sound hole is formed for introducing sound into the cabinet,
Furthermore, a microphone substrate provided on the front side of the holder and having a microphone element for collecting sound mounted thereon;
2. A spacer sandwiched between the inner wall surface of the cabinet and the microphone substrate, made of an elastic material, and having an opening communicating with the sound hole of the cabinet. 7. The electronic device according to any one of 6.

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