CN110913048B

CN110913048B - Electronic device

Info

Publication number: CN110913048B
Application number: CN201911218773.6A
Authority: CN
Inventors: 吴晓光; 蒋国珠
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-09-28
Anticipated expiration: 2039-11-29
Also published as: CN110913048A

Abstract

The invention discloses an electronic device, comprising a device main body (100) and a sounding device (200), wherein: the device main body (100) is provided with a first sound outlet hole (110), a second sound outlet hole (120), a mounting cavity (130) and at least two first sound guide channels (140), wherein the first sound outlet hole (110) is located on the first side of the device main body (100), and the second sound outlet hole (120) is located on the second side of the device main body (100); the sounder (200) is arranged in the mounting cavity (130), and the sounder (200) divides the mounting cavity (130) into a first sub-cavity (131) and a second sub-cavity (132); wherein: the first sound outlet (110) is communicated with the first sub-cavity (131), and the second sound outlet (120) is communicated with the second sub-cavity (132) through at least two first sound guide channels (140). The scheme can solve the problem that the existing electronic equipment cannot give consideration to both conversation safety and clear conversation during conversation.

Description

Electronic device

Technical Field

The invention relates to the technical field of communication equipment, in particular to electronic equipment.

Background

As technology advances and user demands increase, the acoustic performance of electronic devices continues to be optimized. It is known that the call function of an electronic device is its basic function. In the using process, the user holds the electronic equipment for conversation. For example, in a noisy environment, the user often needs to turn the volume up in order to be able to make a clear call. In this case, the surrounding people also hear the sound emitted from the electronic device, and thus the content of the call. Obviously, this may lead to privacy leakage for the user.

In order to avoid privacy disclosure, users often have to turn down the volume, which in turn makes it more difficult to speak clearly. Obviously, the current electronic device has a problem that the call security and the clear call cannot be both considered when the electronic device is in a call.

Disclosure of Invention

The invention discloses electronic equipment, which aims to solve the problem that the existing electronic equipment cannot give consideration to both conversation safety and clear conversation when in conversation.

In order to solve the problems, the invention adopts the following technical scheme:

an electronic device comprising a device body and a sound-producing device, wherein:

the device body is provided with a first sound outlet hole, a second sound outlet hole, an installation cavity and at least two first sound guide channels, wherein the first sound outlet hole is positioned on the first side of the device body, and the second sound outlet hole is positioned on the second side of the device body;

the sounding device is arranged in the mounting cavity and divides the mounting cavity into a first sub-cavity and a second sub-cavity; wherein:

the first sound outlet holes are communicated with the first sub-cavities, and the second sound outlet holes are communicated with the second sub-cavities through the at least two first sound guide channels.

The technical scheme adopted by the invention can achieve the following beneficial effects:

the electronic equipment disclosed by the embodiment of the invention improves the structure of the existing electronic equipment, the first sound outlet is formed in the first side of the equipment main body, the second sound outlet is formed in the second side of the equipment main body, the sound production device divides the installation cavity into the first sub-cavity and the second sub-cavity, the second sound outlet is communicated with the second sub-cavity through the at least two first sound guide channels, and the at least two first sound guide channels can change the phase of the second sound wave emitted from the second sound outlet, so that the phase of the second sound wave is different from that of the first sound wave, a certain sound wave counteracting effect is achieved, and the sound leakage amount can be effectively reduced. The reduction of the volume of leaking out of sound can make the user can implement clearer conversation through adjusting great volume at the in-process that uses electronic equipment to converse, simultaneously because offset between first sound wave and the second sound wave to can make the in-process decay at sound transmission great, and then can alleviate the problem that the user hears the sound that electronic equipment sent around the in-process of conversing.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic partial structural diagram of a first electronic device according to an embodiment of the disclosure;

fig. 2 is a partial structural sectional view of a first electronic device according to an embodiment of the disclosure;

fig. 3 is a schematic partial structural diagram of a second electronic device according to an embodiment of the disclosure;

FIG. 4 is a cross-sectional view of a portion of the structure of FIG. 3;

fig. 5 is a schematic structural diagram of a third electronic device according to an embodiment of the disclosure.

Description of reference numerals:

100-equipment body, 110-first sound outlet, 120-second sound outlet, 130-installation cavity, 131-first sub-cavity, 132-second sub-cavity, 140-first sound guide channel, 141-main sound guide channel, 142-auxiliary sound guide channel, 150-camera module, 151-camera decorative ring, 152-camera, 160-sealing piece, 170-dust screen, 100 a-middle frame, 100a 1-limiting part, 100 b-rear cover, 100b 1-supporting part, 100b 2-sinking platform, 100 c-display screen, and,

200-sounding device,

300-dustproof decorative net.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, an embodiment of the invention discloses an electronic device, which includes a device body 100 and a sounding device 200.

The apparatus body 100 is a body portion of the electronic apparatus. In a general case, the apparatus main body 100 includes main constituent elements of the electronic apparatus, and for example, the apparatus main body 100 may include an apparatus housing and functional elements such as a display screen 100c, a battery, a main board, and the like mounted on the apparatus housing. In the embodiment of the present invention, the device body 100 is formed with a first sound emitting hole 110, a second sound emitting hole 120, a mounting cavity 130 and at least two first sound guiding channels 140.

In the present embodiment, the first sound emitting hole 110 and the second sound emitting hole 120 are oriented differently. Specifically, the first sound emitting hole 110 may be located at a first side of the device body 100, and the second sound emitting hole 120 may be located at a second side of the device body 100.

The sound generating device 200 is a device capable of generating sound for an electronic device, for example, the sound generating device 200 may be a receiver. During operation of the sound emitting device 200, sound generated by the sound emitting device 200 can be transmitted to the environment in which the electronic device is located through the first sound emitting hole 110 and the second sound emitting hole 120.

The sounder device 200 is disposed in the mounting cavity 130 so as to be assembled with the apparatus body 100. The sounder device 200 divides the mounting cavity 130 into a first sub-cavity 131 and a second sub-cavity 132. First subchamber 131 and second subchamber 132 are hermetically isolated. The first sub-chamber 131 is in communication with the first sound emitting hole 110, and the second sub-chamber 132 is in communication with the second sound emitting hole 120 through the at least two first sound guiding channels 140.

In the working process of the sound generating device 200, the sound generated by the sound generating device 200 will sequentially pass through the first sub-cavity 131 and the first sound outlet hole 110 and then be transmitted to the environment where the electronic device is located, and the sound generated by the sound generating device 200 will sequentially pass through the second sub-cavity 132, the at least two first sound guide channels 140 and the second sound outlet hole 120 and then be transmitted to the environment where the electronic device is located.

The first sound guiding channel 140 is a channel capable of conducting sound. The first sound guiding channel 140 can adjust the phase of the second sound wave transmitted from the second sound output hole 120, so that the second sound wave transmitted from the second sound output hole 120 satisfies the requirements described later.

The sound wave emitted by the sound emitting device 200 through the first sound emitting hole 110 is a first sound wave, and the sound wave emitted by the sound emitting device 200 through the second sound emitting hole 120 is a second sound wave. In the embodiment of the invention, the phases of the first sound wave and the second sound wave are different, so that the first sound wave and the second sound wave can generate certain cancellation effect after meeting, and the sound is promoted to be attenuated in the process of propagation.

The electronic device disclosed in the embodiment of the present invention improves the structure of the existing electronic device, by providing the first sound outlet hole 110 on the first side of the device main body 100 and providing the second sound outlet hole 120 on the second side of the device main body 100, and dividing the mounting cavity 130 into the first sub-cavity 131 and the second sub-cavity 132 by the sound generating device 200, the second sound outlet hole 120 is communicated with the second sub-cavity 132 through the at least two first sound guide channels 140, and the at least two first sound guide channels 140 can change the phase of the second sound wave emitted from the second sound outlet hole 120, so that the phases of the second sound wave and the first sound wave are different, thereby achieving a certain sound wave cancellation effect, and further effectively reducing the sound leakage. The reduction of the volume of leaking out of sound can make the user can implement clearer conversation through adjusting great volume at the in-process that uses electronic equipment to converse, simultaneously because offset between first sound wave and the second sound wave to can make the in-process decay at sound transmission great, and then can alleviate the problem that the user hears the sound that electronic equipment sent around the in-process of conversing.

In the electronic device disclosed in the embodiment of the present invention, the at least two first sound guiding channels 140 are provided, in this case, compared with one first sound guiding channel 140, more first sound guiding channels 140 can act together, so that the acoustic impedance of the first sound guiding channel 140 can be reduced, and thus the acoustic impedance of the second sub-cavity 132 is reduced, thereby improving the sound quality and avoiding the generation of standing waves.

In a general case, the equivalent area of the first sound outlet hole 110 is far larger than the equivalent area of the second sound outlet hole 120, and therefore, the at least two first sound guiding channels 140 correspond to the second sound outlet hole 120, so that the radiation sound field at the second side can be improved, the sound source energy at the first side and the second side is more uniform, the sound leakage value of the electronic device radiating to the periphery of the user can be more effectively reduced, and the range of sound wave cancellation can be larger.

In a preferable embodiment, the first sound wave and the second sound wave may have opposite phases, so that the first sound hole 110 and the second sound hole 120 form an acoustic dipole, and the first sound wave and the second sound wave are offset in opposite phases after meeting each other, thereby further promoting attenuation of sound in a process of transmitting the sound far away, and facilitating further reduction of sound leakage of the electronic device.

In a specific simulation test process, the simulation result can also be verified, and the sound can be greatly attenuated in the sound emitting direction of the second sound emitting hole 120.

In a preferable embodiment, the first sound outlet hole 110 may be a strip-shaped hole, and an extending direction of the strip-shaped hole may be the same as a width direction of the electronic device. In this case, the first sound outlet hole 110 has a wider sound emitting range, which is beneficial to improving the sound performance of the electronic device.

As described above, the first sound emitting hole 110 is disposed at the first side of the device body 100, and the at least two second sound emitting holes 120 are disposed at the second side of the device body 100. In an alternative scheme, the first side and the second side may be two opposite sides of the device body 100, or two adjacent sides of the device body 100, that is, the first side and the second side are disposed adjacent to each other. In the case where the first side and the second side are opposite sides of the device body 100, the first sound emitting hole 110 and the second sound emitting hole 120 can realize simultaneous sound emission from opposite sides of the electronic device. In this case, it may be: the first side is the side of the electronic device on which the display screen 100c is mounted, and the second side is the other side of the electronic device on which the rear cover 100b is mounted. Of course, it may also be: the first side is a side of the electronic device on which the display screen 100c is mounted, and the second side is a side on which the electronic device is located, and may be, for example, an outer side of a middle frame of the electronic device.

In the embodiment of the present invention, the first sound guiding channel 140 plays a role of sound conduction and adjusting the phase of the second sound wave. In a specific design process, the second sound wave phase can be adjusted by adjusting parameters such as the length and the cross-sectional area of each first sound guiding channel 140. Optionally, in the at least two first sound guiding channels 140, the lengths of the first sound guiding channels 140 are different, the sound leakage effects of the first sound guiding channels 140 with different lengths in each frequency band are different, and the second sound waves are output through the plurality of first sound guiding channels 140 and the plurality of second sound outlet holes 120, so that the full frequency band can be effectively covered, and the sound leakage prevention effect can be improved.

The method can also be as follows: the widths of the first sound guiding channels 140 are different. It can also be: the heights of the respective first sound guiding channels 140 are not equal. The size parameters of the first sound guiding channels 140 are not equal, so that adjustment of more phases can be realized, and the adjustment is more comprehensive.

Here, the length direction of the electronic device refers to a direction having a larger size in the plane of the display screen 100c of the electronic device, and the width direction of the electronic device is perpendicular to the length direction of the electronic device. In a general case, a projection of the electronic device perpendicular to the display screen 100c is a rectangular or oblong structure similar to a rectangle, a longitudinal direction of the electronic device may be regarded as a direction in which a long side of the projection extends, and a width direction of the electronic device may be regarded as a direction in which a wide side of the projection extends.

Herein, the length of the first sound guide channel 140 refers to the dimension of the first sound guide channel 140 in the penetrating direction; the height of the first sound guiding channel 140 refers to the dimension of the first sound guiding channel 140 in the direction perpendicular to the display screen 100 c. The first sound guiding channel 140 is in a cross section perpendicular to the direction of the display screen 100c, and the width direction of the first sound guiding channel 140 is perpendicular to the height direction of the first sound guiding channel 140.

In an alternative, the length of the first sound guiding channel 140 may be 2mm to 20mm, the height of the first sound guiding channel 140 may be greater than or equal to 0.5mm, and the width of the first sound guiding channel 140 may be less than or equal to 8 mm. In another alternative, the area of the second sound outlet hole 120 may be greater than or equal to 2mm²。

Optionally, the cross section of the first sound guiding channel 140 and the length of the first sound guiding channel 140 satisfy the following formula: s is less than L²Where S is the cross-sectional area of the first sound guiding channel 140, L is the length of the first sound guiding channel 140, and the cross-sectional area is the cross-sectional area of the first sound guiding channel 140 perpendicular to the penetrating direction thereof.

In another alternative, the distance between any two adjacent second sound emitting holes 120 is less than or equal to n λ/2, where λ is the wavelength corresponding to the operating frequency of the sound emitting device 200, and n is an odd number.

Through detection verification, the design of the parameters enables the second sound wave and the first sound wave to have better cancellation effect, and therefore the sound can be better attenuated in the propagation direction.

To better adjust the phase of the second sound wave, each first sound guiding channel 140 may be a bar channel. A first end of the first sound guiding channel 140 is communicated with the second sub-chamber 132, and a second end of the first sound guiding channel 140 is communicated with the second sound outlet 120. Specifically, the first end of the first sound guiding channel 140 and the second end of the first sound guiding channel 140 may be sequentially disposed in the length direction of the electronic device.

Referring to fig. 5, in order to better adjust the phase of the second sound wave, in an alternative scheme, the at least one first sound guiding channel 140 may include a main sound guiding channel 141 and at least one sub sound guiding channel 142, a third end of the main sound guiding channel 141 is communicated with the second sub cavity 132, a fourth end of the main sound guiding channel 141 extends away from the second sub cavity 132, a fifth end of the sub sound guiding channel 142 is connected between the third end of the main sound guiding channel 141 and the fourth end of the main sound guiding channel 141, and a sixth end of the sub sound guiding channel 142 extends away from the main sound guiding channel 141. At least one of the main sound leading passage 141 and the sub sound leading passage 142 is connected with the second sound emitting hole 120.

Since the sound guide channel 140 includes the main sound guide channel 141 and the sub sound guide channel 142, the structure formed by the main sound guide channel 141 and the sub sound guide channel 142 is more flexible, and the sound guide channel 140 can have a better function of adjusting the phase of the second sound wave.

In the embodiment of the present invention, when the first sound guiding channel 140 includes a main sound guiding channel and an auxiliary sound guiding channel, the second sound outlet 120 may include at least two sub sound outlets, the main sound guiding channel may be communicated with the at least one sub sound outlet, the auxiliary sound guiding channel may be communicated with the at least one sub sound outlet, and the at least two sub sound outlets can undoubtedly achieve a better sound outlet effect.

In the electronic device disclosed in the embodiment of the present invention, on the premise that the second sound outlet hole 120 includes at least two sub sound outlet holes, the at least two sub sound outlet holes may be distributed in various manners, for example, the arrangement direction of the at least two sub sound outlet holes may be the same as the length direction of the electronic device. In another specific embodiment, the arrangement direction of the at least two sub sound outlet holes is the same as the width direction of the electronic device. The sub sound outlet holes are arranged at intervals. The specific arrangement direction of the second sound outlet holes 120 is not limited by the embodiment of the present invention. In a preferable embodiment, the at least two sub sound emitting holes may be distributed uniformly (at equal intervals), that is, the distance between any two adjacent sub sound emitting holes is equal.

In the present embodiment, the first sound emitting hole 110, the second sound emitting hole 120, the mounting cavity 130 and the at least two first sound guide channels 140 may be formed in various manners. For example, the first sound emitting hole 110, the second sound emitting hole 120, the mounting chamber 130, and the at least two first sound guide channels 140 may be formed on the device case of the device body 100. Of course, at least some of the first sound emitting hole 110, the second sound emitting hole 120, the mounting cavity 130 and the at least two first sound guiding channels 140 may be formed by the device housing together with other functional devices (e.g. the display screen 100 c). The embodiment of the present invention does not limit the specific forming manner of the first sound emitting hole 110, the second sound emitting hole 120, the mounting cavity 130 and the at least two first sound guiding channels 140.

In a general case, the device main body 100 may include a device housing and a display screen 100c, the device housing may include a middle frame 100a, a rear cover 100b and a front cover, the middle frame 100a, the rear cover 100b and the front cover are usually fixedly connected in a detachable connection manner, for example, a snap fit may be adopted between the middle frame 100a and the rear cover 100b and between the front cover and the middle frame 100 a.

In a specific embodiment, the display screen 100c may be disposed on the front cover, the rear cover 100b is connected to a side of the middle frame 100a away from the front cover, the rear cover 100b is provided with a second sound outlet 120, and the rear cover 100b and the middle frame 100a enclose a first sound guiding channel 140.

In another alternative, the display screen 100c may be disposed on the rear cover 100b, the rear cover 100b is connected to a side of the middle frame 100a facing away from the front cover, the front cover is opened with a first sound outlet 110, and the rear cover 100b and the middle frame 100a enclose a first sound guide channel 140.

In the two embodiments listed above, the display screen 100c may be disposed on the front cover or disposed on the rear cover 100b, and the front cover and the rear cover 100b are respectively connected to two opposite sides of the middle frame 100 a. The first sound guiding channel 140 is surrounded by the rear cover 100b and the middle frame 100a, and the first sound guiding channel 140 can be formed after the rear cover 100b and the middle frame 100a are assembled.

Alternatively, in the case that the display screen 100c is disposed on the front cover, one of the display screen 100c and the front cover is opened with the first sound outlet 110. In order to avoid the influence on the display 100c, in a preferred embodiment, a portion of the top end of the display 100c facing the middle frame 100a is surrounded by the first sound outlet 110. The method can also be as follows: in a case where the display screen 100c is provided in the rear cover, one of the display screen 100c and the rear cover is opened with a second sound outlet hole 120. The embodiment of the present invention does not limit the specific forming manner of the first sound emitting hole 110 and the second sound emitting hole 120.

Of course, the installation cavity 130 may be formed on the device housing separately, or may be enclosed by the device housing and the display screen 100 c. Referring again to FIG. 1, the display screen 100c may enclose a mounting cavity 130 with the center frame 100a and the rear cover 100b, in such a manner that the mounting cavity 130 is defined to facilitate assembly of the sound device 200.

As described above, the sounder device 200 is mounted to the mounting cavity 130. For convenience of installation, in a preferable embodiment, in a case where the display screen 100c is disposed on the front cover, the middle frame 100a may include a stopper portion 100a1, the rear cover 100b may include a support portion 100b1, and the sound device 200 may be disposed between the stopper portion 100a1 and the support portion 100b 1.

In a specific assembling process, the sounder device 200 may be fixed between the supporting portion 100b1 and the stopper portion 100a1 following the assembly between the rear cover 100b and the middle frame 100a, thereby achieving a clamping fixation. In the alternative, the supporting portion 100b1 may be a supporting protrusion, or may be other structures capable of supporting, such as a supporting frame. The embodiment of the present invention does not limit the specific structure of the supporting portion 100b 1.

In a preferable embodiment, both the first sound emitting hole 110 and the second sound emitting hole 120 may be provided with a dust-proof decorative net 300, the dust-proof decorative net 300 can play a dust-proof role, and meanwhile, the dust-proof decorative net 300 can prevent the first sound emitting hole 110 and the second sound emitting hole 120 from being directly exposed in a larger aperture, and thus can play a certain decorative role. Specifically, the sound output size of the second sound output hole 120 can be adjusted by adjusting the parameters such as the mesh number, thickness and material of the dustproof decorative net 300, so as to achieve a better cancellation effect.

Referring to fig. 3 and fig. 4, the electronic device disclosed in the embodiment of the present invention may further include a camera module 150, where the camera module 150 can implement a camera function of the electronic device. Alternatively, the camera module 150 may be disposed on the second side of the main body 100, that is, the camera module and the second sound outlet 120 are located on the same side.

Under the condition that the electronic device includes the camera module 150, the rear cover 100b may be provided with a mounting hole, the camera module 150 may be disposed in the mounting hole, and a gap is formed between the camera module 150 and a hole wall of the mounting hole, where the gap is the second sound outlet 120. In this case, the gap as the second sound outlet hole 120 can certainly improve the appearance performance of the electronic apparatus.

In a specific embodiment, the camera module 150 may include a camera decoration ring 151 and a camera 152 disposed in an area surrounded by the camera decoration ring 151, wherein a gap is formed between the camera decoration ring 151 and a hole wall of the mounting hole.

In order to better realize sound guiding, in a preferable scheme, the mounting hole may be a counter sink hole, the counter sink hole includes the counter sink 100b2, the counter sink 100b2 may enclose a sound guiding space with the camera module 150, the first sound guiding channel 140 may communicate with the gap through the sound guiding space, and the sound guiding space undoubtedly can better realize transmission of sound between the gap and the first sound guiding channel 140.

In general, the width of the gap is small, which makes it inconvenient to provide a dust-proof member, and based on this, in a more preferable aspect, a sealing member 160 surrounding the port of the first sound guide passage 140 and a dust-proof net 170 stacked on the sealing member 160 may be provided between the rear cover 100b and the middle frame 100a, and the dust-proof net 170 covers the port. The sealing member 160 and the dust screen 170 may be formed as a single body, and are clamped and fixed between the rear cover 100b and the middle frame 100a during the assembly of the rear cover 100b and the middle frame 100 a. Specifically, the sealing member 160 may be a foam member or a silicone member.

As described above, in the embodiment of the present invention, the first sound guiding channel 140 can adjust the phase of the second sound wave so that the second sound wave is different from the phase of the first sound wave. Certainly, the device main body 100 may further be provided with a second sound guiding channel, the first sub-cavity 131 may be communicated with the first sound outlet 110 through the second sound guiding channel, and the phase of the first sound wave may be adjusted by the second sound guiding channel. In this case, the first sound guiding channel 140 and the second sound guiding channel can make the second sound wave and the first sound wave have different phases, so that the sound wave cancellation is generated. Specifically, the first sound guiding channel 140 and the second sound guiding channel have different structures.

The electronic device disclosed by the embodiment of the invention can be a mobile phone, a tablet computer, an electronic book reader, a game machine, a vehicle-mounted navigator, an intelligent watch and other devices, and the embodiment of the invention does not limit the specific type of the electronic device.

In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An electronic device, comprising a device body (100) and a sound-emitting device (200), wherein:

the device body (100) is provided with a first sound outlet hole (110), a second sound outlet hole (120), an installation cavity (130) and at least two first sound guide channels (140), wherein the first sound outlet hole (110) is located on the first side of the device body (100), and the second sound outlet hole (120) is located on the second side of the device body (100);

the sounder device (200) is disposed within the mounting cavity (130), the sounder device (200) dividing the mounting cavity (130) into a first sub-cavity (131) and a second sub-cavity (132); wherein:

the first sound outlet hole (110) is communicated with the first sub-cavity (131), and the second sound outlet hole (120) is communicated with the second sub-cavity (132) through the at least two first sound guide channels (140); the at least two first sound guiding channels (140) change the phase of a second sound wave emitted from the second sound emitting hole (120) such that the phase of the second sound wave is different from the phase of a first sound wave emitted from the first sound emitting hole (110), the second sound wave at least partially canceling the first sound wave;

each first sound guide channel (140) is a strip-shaped channel, a first end of each first sound guide channel (140) is communicated with the corresponding second sub-cavity (132), and a second end of each first sound guide channel (140) is communicated with the corresponding second sound outlet hole (120).

2. The electronic device of claim 1, wherein a first sound wave emitted by the sound emitting device (200) through the first sound emitting hole (110) is in phase opposition to a second sound wave emitted by the sound emitting device (200) through the second sound emitting hole (120).

3. The electronic device of claim 1, wherein:

the lengths of the first sound leading channels (140) are different; alternatively, the first and second electrodes may be,

the widths of the first sound guide channels (140) are different; alternatively, the first and second electrodes may be,

the heights of the first sound guide channels (140) are different.

4. An electronic device according to claim 1The sound guide device is characterized in that the cross-sectional area of the first sound guide channel (140) and the length of the first sound guide channel (140) satisfy the following formula: s is less than L²Wherein S is the cross-sectional area of the first sound guide channel (140), L is the length of the first sound guide channel (140), and the cross-sectional area is the cross-sectional area of the first sound guide channel (140) perpendicular to the through direction thereof.

5. The electronic device of claim 1, wherein the number of the second sound emitting holes (120) is at least two, and a distance between at least two of the second sound emitting holes (120) is less than or equal to n λ/2, λ is a wavelength corresponding to an operating frequency band of the sound emitting device (200), and n is an odd number.

6. The electronic device according to claim 1, wherein the device body (100) comprises a device housing and a display screen (100 c): wherein: the device housing comprises a middle frame (100a), a rear cover (100b) and a front cover;

the display screen (100c) is arranged on the front cover, the rear cover (100b) is connected to one side, away from the front cover, of the middle frame (100a), the rear cover (100b) is provided with the second sound outlet hole (120), and the rear cover (100b) and the middle frame (100a) enclose the first sound guide channel (140);

or, the display screen (100c) is arranged on the rear cover (100b), the rear cover (100b) is connected to one side, away from the front cover, of the middle frame (100a), the front cover is provided with the first sound outlet (110), and the rear cover (100b) and the middle frame (100a) enclose the first sound guide channel (140).

7. The electronic device of claim 6, wherein:

the top end of the display screen (100c) and the part opposite to the middle frame (100a) form the first sound outlet (110);

alternatively, the first and second electrodes may be,

under the condition that the display screen (100c) is arranged on the front cover, one of the display screen (100c) and the front cover is provided with the first sound outlet hole (110);

and under the condition that the display screen (100c) is arranged on the rear cover, one of the display screen (100c) and the rear cover is provided with the second sound outlet hole (120).

8. The electronic device according to claim 7, wherein in a case where the display screen (100c) is provided to the front cover, the middle frame (100a) includes a stopper portion (100a1), the rear cover (100b) includes a support portion (100b1), and the sound-producing device (200) is provided between the stopper portion (100a1) and the support portion (100b 1).

9. The electronic apparatus according to claim 6, wherein the apparatus body (100) further comprises a camera module (150), the camera module (150) being located at a second side of the apparatus body (100).

10. The electronic device according to claim 9, wherein the rear cover (100b) has a mounting hole, the camera module (150) is disposed in the mounting hole, and a gap is formed between the camera module (150) and a wall of the mounting hole, where the gap is the second sound outlet (120).

11. The electronic device according to claim 10, wherein the camera module (150) comprises a camera decorative ring (151) and a camera (152) arranged in an area surrounded by the camera decorative ring (151), and the gap is formed between the camera decorative ring (151) and a hole wall of the mounting hole.

12. The electronic device according to claim 10, wherein the mounting hole is a counter sink hole, a counter sink (100b2) of the counter sink hole and the camera module (150) enclose a sound guiding space, and the first sound guiding channel (140) is communicated with the gap through the sound guiding space.

13. The electronic device according to claim 10, wherein a seal (160) surrounding a port of the first sound guide channel (140) and a dust screen (170) superimposed on the seal (160) are provided between the rear cover (100b) and the middle frame (100a), and the dust screen (170) covers the port.

14. The electronic device according to claim 1, wherein the at least one first sound guiding channel (140) comprises a main sound guiding channel (141) and at least one secondary sound guiding channel (142), a third end of the main sound guiding channel (141) is communicated with the second sub-cavity (132), a fourth end of the main sound guiding channel (141) extends in a direction away from the second sub-cavity (132), a fifth end of the secondary sound guiding channel (142) is connected between the third end of the main sound guiding channel (141) and the fourth end of the main sound guiding channel (141), and a sixth end of the secondary sound guiding channel (142) extends in a direction away from the main sound guiding channel (141).