WO2024087829A1 - Far-field voice module and display device - Google Patents

Abstract

Provided in the embodiments of the present disclosure are a far-field voice module and a display device. The far-field voice module comprises: a module housing, which is provided with an inner cavity portion and a sound guiding channel, the sound guiding channel having an outer opening end and an inner opening end, the outer opening end being arranged on the outer surface of the module housing, and the inner opening end being arranged in the inner cavity portion; and a hardware circuit, which is arranged in the inner cavity portion, the hardware circuit comprising a circuit board and various functional modules arranged on the circuit board, the various functional modules comprising a microphone module, and the inner opening end of the sound guiding channel facing a sound inlet hole of the microphone module.

Description

Far-field voice module and display device

This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on October 25, 2022, with application number 202211313451.1 and invention name “Far-field voice module and display device”, the entire contents of which are incorporated by reference in this application.

Technical Field

The present disclosure relates to the technical field of electronic equipment, and in particular to a far-field voice module and a display device.

Background technique

In the related art, when an electronic device such as a television is provided with multiple functional modules, the various functional modules are dispersedly arranged at different positions of the device.

technical problem

Each functional module needs to be installed and fixed using a corresponding installation structure, resulting in a large number of installation structures and complicated installation steps.

Technical Solutions

The embodiments of the present disclosure provide a far-field voice module and a display device, which can reduce the installation structure inside the electronic device.

On the one hand, an embodiment of the present application provides a far-field voice module, including: a module shell, provided with an inner cavity and a sound-conducting cavity, the sound-conducting cavity having an outer opening end and an inner opening end, the outer opening end is arranged on the outer surface of the module shell, and the inner opening end is arranged in the inner cavity; a hardware circuit is arranged in the inner cavity, the hardware circuit includes a circuit board and a plurality of functional modules arranged on the circuit board; the plurality of functional modules include a microphone module, and the inner opening end of the sound-conducting cavity faces the sound inlet hole of the microphone module.

In some embodiments, the sound guiding cavity includes a first sound guiding cavity segment and a second sound guiding cavity segment connected in sequence, and the first sound guiding cavity segment and the second sound guiding cavity segment are perpendicular to each other or inclined at an angle.

In some embodiments, the outer opening end is located at an end of the first sound guiding cavity segment away from the second sound guiding cavity segment; along the direction from the outer opening end to the second sound guiding cavity segment, the sound guiding cross-section of the first sound guiding cavity segment decreases.

In some embodiments, the number of the sound-conducting cavities and the number of the microphone modules are equal and are arranged in a one-to-one correspondence.

In some embodiments, the far-field voice module also includes a flexible adhesive, which is at least bonded between the inner cavity surface of the module shell and the back area of the circuit board where the microphone module is provided; the flexible adhesive is provided with a first sound hole, and the circuit board is provided with a second sound hole, and the inner opening end, the first sound hole, the second sound hole and the sound input hole of the microphone module are connected in sequence.

In some embodiments, a connection boss is provided on the inner cavity surface of the module housing, the circuit board is disposed on the connection boss, and the flexible adhesive is bonded between the connection boss and the circuit board.

In some embodiments, one of the connecting boss and the circuit board is provided with a positioning protrusion, and the other is provided with a positioning recess, and the positioning protrusion and the positioning recess are configured to perform plug-in positioning.

In some embodiments, the multiple functional modules also include a switch module, which is configured to control the switch of the microphone module; the switch module includes a switch device and a transmission control member, the switch device is arranged on the circuit board, the transmission control member has a transmission part and a control part, the transmission part and the switch device are connected for transmission, and the control part extends outside the module housing.

In some embodiments, the module shell is provided with a connecting through hole and a limiting protrusion, the transmission control member is passed through the connecting through hole, the limiting protrusion is arranged on the inner cavity surface of the module shell around the connecting through hole, and the area on the circuit board where the switching device is provided or the back area of the area is pressed onto the limiting protrusion.

In some embodiments, the limiting protrusion includes a plurality of limiting protrusion sub-parts, and the plurality of limiting protrusion sub-parts are sequentially spaced around the connecting via.

In some embodiments, a flange portion is provided between two ends of the transmission operating member along its extension direction, and the flange portion can be held between the circuit board and the inner cavity surface of the module housing so as to move along with the transmission operating member.

In some embodiments, a lateral limiting portion is provided on the inner cavity surface of the module shell, and the transmission operating member can drive the switching device to switch the switch state along the first direction. The transmission portion and the lateral limiting portion are located on opposite sides of the transmission operating member along the second direction, and the first direction and the second direction are perpendicular to each other.

In some embodiments, the circuit board has an arrangement side and a back side arranged opposite to each other along its thickness direction, the multiple functional modules are arranged on the arrangement side of the circuit board, and the back side of the circuit board is arranged on the inner cavity surface of the module housing.

In some embodiments, the multiple functional modules also include at least one of a Bluetooth module, a WiFi module, an infrared communication module, a mechanical control module, a switch module, an indicator light module and a light sensing module.

On the other hand, an embodiment of the present application provides a display device, comprising the far-field speech module provided by any of the above embodiments, wherein the outer opening end of the sound guiding cavity is connected to the outside of the display device.

Beneficial Effects

The far-field voice module and display device provided by the embodiments of the present disclosure integrate various functional modules on the circuit board of the far-field voice module, utilize the space on the circuit board to layout the circuits of the above-mentioned various functional modules, utilize the electronic assembly process of the microphone module on the circuit board to realize the electronic assembly of the above-mentioned various functional modules, and the module shell of the far-field voice module covers and protects the above-mentioned circuit board and various functional modules, without the need to add an additional packaging shell structure. On the contrary, the packaging shell structure and installation structure originally configured for various functional modules can be cancelled, thereby saving structural cost and installation cost and improving installation efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

FIG1 is an exploded structural diagram of a far-field voice module provided in some embodiments of the present application;

FIG2 is an isometric structural diagram of a module housing of a far-field voice module provided in some embodiments of the present application;

FIG3 is a cross-sectional structural diagram of a module housing of a far-field voice module provided in some embodiments of the present application;

FIG. 4 is a partial cross-sectional structural diagram of a far-field voice module provided in some embodiments of the present application.

Reference numerals:
1- far-field voice module, 10- module housing, 11- inner cavity, 12- sound guide cavity, 121- first sound guide cavity section, 122- second sound guide cavity section, 12a- outer opening end, 12b- inner opening end, 13- connection boss, 131- positioning boss, 14- connection via, 15- limiting boss, 151- limiting boss sub-section, 16- lateral limiting section, 17- boss section, 18- support rib position, 20- hardware circuit, 21- line Circuit board, 211-second sound hole, 21a-arrangement side, 21b-back side, 22-functional module, 22a-microphone module, 22b-switch module, 22c-indicator light module, 22d-mechanical control module, 221-switch device, 222-transmission control part, 2221-transmission part, 2222-control part, 2223-flange part, 30-flexible adhesive, 31-first sound hole, 40-light guide plate, 41-silk screen position.

Embodiments of the present invention

The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

“A and/or B” includes the following three combinations: A only, B only, and a combination of A and B.

The use of "suitable for" or "configured to" in this disclosure is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because a process, step, calculation or other action "based on" one or more stated conditions or values may be based on additional conditions or values beyond the stated values in practice.

In this disclosure, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this disclosure as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present disclosure. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present disclosure can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present disclosure with unnecessary details. Therefore, the present disclosure is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present disclosure.

In the related art, electronic devices such as televisions often need to be equipped with multiple functional modules such as Bluetooth modules, WiFi modules, infrared communication modules, etc. Due to structural limitations or functional needs, various functional modules are dispersed and arranged in different positions of electronic devices; each functional module needs to be installed and fixed using a corresponding mounting structure, which may involve a variety of structural forms including threaded fastening, snap-on connection, and riveting. In this way, there are many types and quantities of mounting structures, and the installation steps are complicated, so that the installer needs to spend more time on installation and fixation, resulting in low installation efficiency.

The embodiment of the present application provides a far-field voice module 1, which includes a module housing 10 and a hardware circuit 20, and can reduce the installation structure inside the electronic device. Here, the far-field voice module 1 can be applied to various electronic devices such as televisions, customer premises equipment (CPE), etc., to meet the far-field voice function requirements of the corresponding electronic devices.

As shown in FIGS. 1 to 4, the module housing 10 is provided with an inner cavity 11 and a sound-conducting cavity 12. The sound-conducting cavity 12 has an outer opening end 12a and an inner opening end 12b. The outer opening end 12a is arranged on the outer surface of the module housing 10, and the inner opening end 12b is arranged in the inner cavity 11. Here, the outer opening end 12a of the sound-conducting cavity 12 can be connected to the outside of the device where the far-field voice module 1 is located, so that the voice signal emitted by the far/near-field sound source can be transmitted to the inner cavity 11 of the module housing 10 through the sound-conducting cavity 12, and then the voice signal can be recognized and responded to.

The hardware circuit 20 is disposed in the inner cavity 11, and includes a circuit board 21 and a plurality of functional modules 22 disposed on the circuit board 21. Here, the plurality of functional modules 22 include a microphone module 22a, and the inner opening end 12b of the sound-conducting cavity 12 faces the sound inlet hole of the microphone module 22a. In this way, the voice signal can be transmitted to the microphone module 22a through the sound-conducting cavity 12, and the microphone module 22a converts the voice signal into an electrical signal for recognition and response, thereby realizing the far-field voice function.

Compared with the related art, the embodiment of the present application integrates multiple functional modules 22 on the circuit board 21 of the far-field voice module 1, utilizes the space on the circuit board 21 to layout the circuits of the multiple functional modules 22, utilizes the electronic assembly process of the microphone module 22a on the circuit board 21 to realize the electronic assembly of the multiple functional modules 22, and the module housing 10 of the far-field voice module 1 covers and protects the circuit board 21 and the multiple functional modules 22, without the need to add an additional packaging housing structure, on the contrary, the packaging housing structure and the mounting structure originally configured for the various functional modules 22 can be cancelled, thereby achieving It saves structural cost and installation cost and improves installation efficiency.

The structure of the sound-conducting cavity 12 can be determined according to actual needs, and can adopt types such as straight cavities, curved cavities, etc., which are not limited in the embodiments of the present application. In some embodiments, the sound-conducting cavity 12 may include a first sound-conducting cavity segment 121 and a second sound-conducting cavity segment 122 connected in sequence, and the first sound-conducting cavity segment 121 and the second sound-conducting cavity segment 122 are perpendicular to each other or inclined at an angle. In this way, the propagation direction of the voice signal when propagating along the first sound-conducting cavity segment 121 and the second sound-conducting cavity segment 122 can be different, increasing the flexibility of the position setting of the microphone module 22a and the outer opening end 12a, and reducing the design difficulty.

In some examples, the outer opening end 12a may be located at an end of the first sound guiding cavity segment 121 away from the second sound guiding cavity segment 122, so that the end of the first sound guiding cavity segment 121 away from the second sound guiding cavity segment 122 may face the outside of the module housing 10, so that the voice signal outside the module housing 10 may enter the first sound guiding cavity segment 121 through the outer opening end 12a. Exemplarily, the inner opening end 12b may be located at an end of the second sound guiding cavity segment 122 away from the first sound guiding cavity segment 121, so that the voice signal may be transmitted to the microphone module 22a through the second sound guiding cavity segment 122.

Based on the above-mentioned sound-conducting cavity 12 setting structure, the far-field voice module 1 can be set on one side of a display device such as a television, and the length direction of the far-field voice module 1 can be parallel to the side of the display device, the width direction of the far-field voice module 1 can be parallel to the thickness direction of the display device, and the thickness direction of the far-field voice module 1 can be parallel to the vertical side of the side of the display device, and the outer opening end 12a of the far-field voice module 1 can be opened forward along the display direction of the display device and face the user located in front of the display device, and the far-field voice module 1 protrudes outside the display area of the display device along its thickness direction; here, the thickness direction of the display device is the direction connecting the display side and the back side 21b of the display device. For example, the far-field voice module 1 can be arranged on the long side of the display device, and accordingly, the length direction of the far-field voice module 1 can be parallel to the long side of the display device, the width direction of the far-field voice module 1 can be parallel to the thickness direction of the display device, the thickness direction of the far-field voice module 1 can be parallel to the wide side of the display device, and the outer opening end 12a of the far-field voice module 1 faces the front of the display device; for another example, the far-field voice module 1 can be arranged on the wide side of the display device, and accordingly, the length direction of the far-field voice module 1 can be parallel to the wide side of the display device, the width direction of the far-field voice module 1 can be parallel to the thickness direction of the display device, and the thickness direction of the far-field voice module 1 can be parallel to the long side of the display device, and the outer opening end 12a of the far-field voice module 1 still faces the front of the display device.

In this way, when the far-field voice module 1 adopts a thin design and has a small thickness dimension, the dimension of the far-field voice module 1 protruding outside the display area of the display device can be made equal to the thickness dimension of the far-field voice module 1, thereby avoiding the far-field voice module 1 from having a small protruding dimension, thereby making the display device have a more compact and smooth appearance; and the outer opening end 12a of the far-field voice module 1 is always facing the front of the display device, so that the outer opening end 12a can receive the voice signal located in front of the display device more directly, thereby ensuring the recognition accuracy, response sensitivity and response accuracy of the far-field voice module to the sound source located in front of the display device, and achieving better far-field voice control function effect.

Exemplarily, along the direction from the outer opening end 12a to the second sound guiding cavity section 122, the sound guiding cross section of the first sound guiding cavity section 121 can be in a decreasing change state; here, the sound guiding cross section of the first sound guiding cavity section 121 is a cross section through which a voice signal can pass. In this way, the sound guiding cross section area of the end of the first sound guiding cavity section 121 close to the outer opening end 12a is larger, which can increase the contact area between the first sound guiding cavity section 121 and the environment outside the module shell 10, making it difficult for the voice signal emitted by the external sound source to enter the first sound guiding cavity section 121, thereby increasing the amount of voice signals that the first sound guiding cavity section 121 can receive and the ability to receive voice signals; and the sound guiding cross section area of the end of the first sound guiding cavity section 121 close to the second sound guiding cavity section 122 is smaller, which can make the voice signal gradually concentrated and distributed more densely when propagating along the first sound guiding cavity section 121, reduce the attenuation of the voice signal during the propagation process, and thereby increase the recognition accuracy, response sensitivity and response precision of the voice signal.

The correspondence between the sound-conducting channels 12 and the microphone modules 22a can be determined according to actual needs, and the embodiments of the present application do not limit this. In some embodiments, the number of sound-conducting channels 12 and microphone modules 22a is equal, and they are arranged one-to-one, and each sound-conducting channel 12 transmits a voice signal to a microphone module 22a accordingly. In other embodiments, the number of sound-conducting channels 12 may be less than the number of microphone modules 22a, and a sound-conducting channel 12 may be respectively arranged to correspond to multiple microphone modules 22a, and the sound-conducting channel 12 may transmit voice signals to multiple microphone modules 22a at the same time. In some further embodiments, the number of sound-conducting channels 12 may be greater than the number of microphone modules 22a, and a microphone module 22a may be divided into two or more sound-conducting channels 12 and two or more sound-conducting channels 12. The microphone module 22 a is respectively arranged corresponding to the multiple sound guiding channels 12 , and can receive voice signals transmitted from the multiple sound guiding channels 12 .

In some embodiments, the far-field voice module 1 may further include a flexible adhesive 30, which is at least bonded between the inner cavity surface of the module housing 10 and the back area of the area on the circuit board 21 where the microphone module 22a is provided. It can be understood that other areas on the circuit board 21 except the above-mentioned areas can also be bonded and fixed by the flexible adhesive 30 and the inner cavity surface of the module housing 10. The flexible adhesive 30 is provided with a first sound hole 31, and the circuit board 21 is provided with a second sound hole 211. The inner opening end 12b, the first sound hole 31, the second sound hole 211 and the sound input hole of the microphone module 22a are connected in sequence; here, the second sound hole 211 can connect the area on the circuit board 21 where the microphone module 22a is provided and the back area of the area. The type of the flexible adhesive 30 can be determined according to actual needs, and adhesives such as double-sided adhesives and foam adhesives can be used, which are not limited in the embodiments of the present application.

In this way, the flexible adhesive 30 can be used to perform preliminary bonding and fixing of the circuit board 21 and the module housing 10; and by utilizing the flexible deformation characteristics and bonding force of the flexible adhesive 30, the flexible adhesive 30 can be densely bonded between the circuit board 21 and the inner cavity surface of the module housing 10, thereby avoiding the existence of a matching gap between the flexible adhesive 30 and the circuit board 21, and between the flexible adhesive 30 and the inner cavity surface of the module housing 10, and correspondingly increasing the air tightness of the connection between the sound guiding cavity 12, the flexible adhesive 30 and the circuit board 21/microphone module 22a, thereby ensuring that all or most of the voice signals can be accurately transmitted to the microphone module 22a, thereby eliminating or reducing signal leakage losses.

In some examples, a connection boss 13 may be provided on the inner cavity surface of the module housing 10, the circuit board 21 is arranged on the connection boss 13, and the flexible adhesive 30 is bonded between the connection boss 13 and the circuit board 21. In this way, the matching area between the inner cavity surface of the module housing 10 and the circuit board 21 can be controlled within the range of the connection boss 13, thereby increasing the matching accuracy between the inner cavity surface of the module housing 10 and the circuit board 21, so that the flexible adhesive 30 can be densely bonded between the connection boss 13 and the circuit board 21, and the air tightness of the connection between the sound guide cavity 12, the flexible adhesive 30 and the circuit board 21/microphone module 22a is correspondingly increased. In addition, based on the design of the connection boss 13, the precision surface area on the module housing 10 can be reduced, thereby reducing the manufacturing cost.

Exemplarily, one of the connecting boss 13 and the circuit board 21 may be provided with a positioning protrusion 131, and the other may be provided with a positioning recess, and the positioning protrusion 131 and the positioning recess are configured to perform plug-in positioning. In some examples, the connecting boss 13 may be provided with a positioning protrusion 131, and the circuit board 21 may be provided with a positioning recess; in other examples, the connecting boss 13 may be provided with a positioning recess, and the circuit board 21 may be provided with a positioning protrusion 131. When the circuit board 21 is bonded to the connecting boss 13 through the flexible adhesive 30, the operator will be blocked from sight by the circuit board 21 and cannot directly observe whether the flexible adhesive 30 and the connecting boss 13 are accurately aligned; using the above-mentioned positioning structure, the operator can perform plug-in positioning through the positioning protrusion 131 and the positioning recess when direct observation is not possible, so that the flexible adhesive 30 and the connecting boss 13 are accurately aligned, thereby reducing the difficulty of installation and improving the installation accuracy.

The type of the positioning protrusion 131 can be determined according to actual needs, and can be a positioning convex column, a positioning convex point, etc., which is not limited in the embodiment of the present application. The type of the positioning recess can be determined according to actual needs, and can be a positioning groove, a positioning through hole, etc., which is not limited in the embodiment of the present application.

In some embodiments, a boss portion 17 may be provided on the inner cavity surface of the module housing 10; the boss portion 17 is provided with a threaded hole and is used to support the circuit board 21, and the screw can pass through the corresponding through hole on the circuit board 21 and be threadedly connected in the threaded hole to lock the circuit board 21. In some examples, a support rib position 18 such as a cross rib position may be provided on the inner cavity surface of the module housing 10, and the support rib position 18 and the boss portion 17 are arranged at intervals; the support rib position 18 can support and tighten the circuit board 21 to prevent the circuit board 21 from loosening and shaking. Exemplarily, the connecting boss 13, the boss portion 17 and the cross rib position can be arranged in sequence at intervals along the width direction of the module housing 10 to further increase the stability of the circuit board 21 after installation and locking.

In some embodiments, the multi-functional module 22 may further include a switch module 22b, which is configured to switch the microphone module 22a. Based on the switch module 22b, the microphone module 22a can be turned on or off. Here, the switch module 22b includes a switch device 221 and a transmission control member 222. The switch device 221 is disposed on the circuit board 21, and various micro components with a switch switching function can be used; the transmission control member 222 has a transmission part 2221 and a control part 2222. 2222, the transmission part 2221 and the switch device 221 are connected for transmission, and the control part 2222 extends to the outside of the module housing 10. In this way, the user can directly control the control part 2222, and the control part 2222 transmits the control force to the switch device 221 through the transmission part 2221, so that the switch device 221 is switched on and off. By using the control part 2222 of the transmission control member 222, the switch module 22b can have a larger operating area; the user can switch the control part 2222 without directly controlling the switch device 221, which increases the user's control convenience and accuracy accordingly. The type of the switch device 221 can be determined according to actual needs, and types such as toggle switches and push switches can be used, which are not limited in the embodiments of the present application.

In some examples, the module housing 10 may be provided with a connecting hole 14 and a limiting protrusion 15. The connecting hole 14 connects the outer surface and the inner cavity surface of the module housing 10, and the transmission control member 222 is arranged in the connecting hole 14 so that the control part 2222 can extend outside the module housing 10; the limiting protrusion 15 is arranged on the inner cavity surface of the module housing 10 around the connecting hole 14, and the area on the circuit board 21 where the switch device 221 is arranged or the back area of the area is pressed on the limiting protrusion 15. In this way, a gap area can be formed between the area on the circuit board 21 where the switch device 221 is arranged or the back area of the area and the inner cavity surface of the module housing 10, and the gap area is used to provide a relatively considerable activity space for the transmission control member 222, increase the movement sensitivity and transmission accuracy of the transmission control member 222 when subjected to the control force, and prevent the transmission control member 222 from being hindered in movement or stuck.

The structure of the limiting protrusion 15 can be determined according to actual needs, and the embodiment of the present application does not limit this. Exemplarily, the limiting protrusion 15 includes a plurality of limiting protrusion sub-parts 151, and the plurality of limiting protrusion sub-parts 151 are sequentially arranged at intervals around the connecting via 14. Another exemplary embodiment, the limiting protrusion 15 can be an annular structure, and the annular structure is arranged around the connecting via 14.

In some examples, a flange portion 2223 is provided between the two ends of the transmission control member 222 along the extension direction thereof, and the flange portion 2223 can be maintained between the circuit board 21 and the inner cavity surface of the module housing 10 as the transmission control member 222 moves. On the one hand, by providing the flange portion 2223 in the gap area between the circuit board 21 and the inner cavity surface of the module housing 10, the activity space of the transmission control member 222 during transmission control can be limited to the activity space of the flange portion 2223 in the above-mentioned gap area, that is, the matching gap between the flange portion 2223 and the above-mentioned gap area; further, the activity space of the transmission control member 222 can be adjusted by adjusting the size of the flange portion 2223, so as to avoid motion interference and transmission failure caused by too small activity space, or tilting and sideways deviation of the transmission control member 222 and transmission failure caused by too large activity space, thereby improving the accuracy and smoothness of the user's control and the sensitivity of the switch module 22b. On the other hand, the flange portion 2223 can increase the contact area between the transmission control member 222 and the inner cavity surface of the circuit board 21/module housing 10, avoiding stress concentration and large pre-pressure, and improving the user's accuracy and smoothness during operation, as well as the sensitivity of the switch module 22b.

In some examples, a lateral limiting portion 16 is provided on the inner cavity surface of the module housing 10. The transmission control member 222 can drive the switch device 221 to switch the switch state along the first direction, and the transmission part 2221 and the lateral limiting portion 16 are separated on opposite sides of the transmission control member 222 along the second direction, and the first direction and the second direction are perpendicular to each other. In this way, the transmission control member 222 is connected to the switch device 221 through the transmission part 2221 on one side along the second direction, and is limited by the lateral limiting portion 16 on the other side, so that the transmission control member 222 can be relatively stably maintained in a reliable connection position with the switch device 221, avoiding the transmission control member 222 from shaking along the second direction and affecting the control stability and accuracy, so that the transmission control member 222 can stably move along the first direction to switch the switch state of the switch device 221.

The various functional modules 22 can be arranged on the same side of the circuit board 21, or respectively arranged on opposite sides of the circuit board 21, which is not limited in the embodiments of the present application. In some embodiments, the circuit board 21 has an arrangement side 21a and a back side 21b arranged opposite to each other along its thickness direction, and the various functional modules 22 are arranged on the arrangement side 21a of the circuit board 21, and the back side 21b of the circuit board 21 is arranged on the inner cavity surface of the module housing 10. In this way, the various functional modules 22 can be concentrated on the same side of the circuit board 21, which can reduce the manufacturing difficulty and cost of the circuit board 21 on the one hand, and reduce the difficulty of installing the circuit board 21 on the inner cavity surface of the module housing 10 on the other hand.

In some embodiments, the sound guiding cavity 12 and the hardware circuit 20 can be arranged in sequence along the thickness direction of the far-field voice module 1, without increasing or significantly increasing the thickness of the far-field voice module 1, so as to realize the sound guiding cavity 12 and the hardware circuit 20. In some examples, the sound guide cavity 12, the circuit board 21, and the microphone module 22a can be stacked in sequence along the thickness direction of the far-field voice module 1 to improve the voice recognition function of the far-field voice module 1 and achieve a thin design effect of the far-field voice module 1.

In addition to the microphone module 22a, different types of function modules 22 can be selected according to actual needs in the various function modules 22, and the embodiments of the present application do not limit this. In some embodiments, the various function modules 22 may also include at least one of the interactive function modules 22 such as a Bluetooth module, a WiFi module, an infrared communication module, a mechanical control module 22d, a switch module 22b, an indicator light module 22c, and a light sensing module. The Bluetooth module, the WiFi module, and the infrared communication module can respectively realize data communication between the far-field voice module 1 or the electronic device in which it is located and the external device, and belong to the communication interaction function module 22; the mechanical control module 22d and the switch module 22b can be triggered by the user through mechanical operation, and then input control instructions to the far-field voice module 1 or the electronic device in which it is located, and the light sensing module can obtain the user's touch instructions through non-contact sensing, and belong to the control interaction function module 22, and its type can be various types of control buttons/switches; the indicator light module 22c can display the status to the outside world, and belongs to the status interaction function module 22.

In some embodiments, when the multiple functional modules 22 include an indicator light module 22c, a light-transmitting area may be provided on the module housing 10; accordingly, the indicator light module 22c may be arranged opposite to the light-transmitting area, so that the indicator light generated by the indicator light module 22c can pass through the light-transmitting area and be displayed to the outside. In some examples, a light guide 40 may be provided on the inner cavity surface of the module housing 10, and the light guide 40 may be spray-blackened as a whole, and silk-screened at a position opposite to the indicator light module to form a silk-screen position 41. In this way, the indicator light generated by the indicator light module 22c can be propagated more concentratedly along the silk-screen position 41 and the light-transmitting area on the module housing 10, achieving a better light indication effect. In addition, by adjusting the depth of the silk-screen, the brightness of the indicator light can be adjusted to a range that is comfortable for human eyes to observe.

The material of the module housing 10 can be determined according to actual needs, and the present application embodiment does not limit this. In some embodiments, the module housing 10 can be made of black-gray translucent plastic, which can meet the infrared light transmittance requirements of the infrared communication module and the visible light transmittance requirements of the photosensitive module.

The embodiment of the present application also provides a display device, which includes the far-field voice module 1 provided in any of the above embodiments, and the outer opening end 12a of the sound guide cavity 12 is connected to the outside of the display device. The type of display device can be determined according to actual needs, and can be a type such as a television, a monitor, etc., which is not limited in the embodiment of the present application.

The far-field voice module and display device provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims (20)

1. A far-field voice module, characterized by comprising:

   The module shell is provided with an inner cavity and a sound-conducting cavity, wherein the sound-conducting cavity has an outer opening end and an inner opening end, wherein the outer opening end is arranged on the outer surface of the module shell, and the inner opening end is arranged in the inner cavity;

   A hardware circuit is arranged in the inner cavity, and the hardware circuit includes a circuit board and multiple functional modules arranged on the circuit board; the multiple functional modules include a microphone module, and the inner opening end of the sound-conducting cavity faces the sound inlet hole of the microphone module.
2. The far-field voice module according to claim 1 is characterized in that the sound guiding cavity comprises a first sound guiding cavity segment and a second sound guiding cavity segment connected in sequence, and the first sound guiding cavity segment and the second sound guiding cavity segment are perpendicular to each other or inclined at an angle.
3. The far-field voice module according to claim 2 is characterized in that the outer opening end is located at an end of the first sound guiding cavity segment away from the second sound guiding cavity segment; and the sound guiding cross-section of the first sound guiding cavity segment decreases along the direction from the outer opening end to the second sound guiding cavity segment.
4. The far-field voice module according to claim 1 is characterized in that the number of the sound-conducting cavities and the microphone modules is equal and they are arranged in a one-to-one correspondence.
5. The far-field voice module according to claim 1 is characterized in that the far-field voice module also includes a flexible adhesive, which is bonded at least between the inner cavity surface of the module housing and the back area of the circuit board where the microphone module is provided; the flexible adhesive is provided with a first sound hole, the circuit board is provided with a second sound hole, and the inner opening end, the first sound hole, the second sound hole and the microphone The sound inlet holes of the wind modules are connected in sequence.
6. The far-field voice module according to claim 5 is characterized in that a connecting boss is provided on the inner cavity surface of the module housing, the circuit board is arranged on the connecting boss, and the flexible adhesive is bonded between the connecting boss and the circuit board.
7. The far-field voice module according to claim 6 is characterized in that one of the connecting boss and the circuit board is provided with a positioning protrusion, and the other is provided with a positioning recess, and the positioning protrusion and the positioning recess are configured to perform plug-in positioning.
8. The far-field voice module according to claim 1 is characterized in that the multiple functional modules also include a switch module, and the switch module is configured to control the switch of the microphone module; the switch module includes a switch device and a transmission control member, the switch device is arranged on the circuit board, the transmission control member has a transmission part and a control part, the transmission part and the switch device are connected for transmission, and the control part extends outside the module shell.
9. The far-field voice module according to claim 8 is characterized in that a connecting through hole and a limiting protrusion are provided on the module shell, the transmission control member is passed through the connecting through hole, the limiting protrusion is arranged on the inner cavity surface of the module shell around the connecting through hole, and the area on the circuit board where the switch device is provided or the back area of the area is pressed on the limiting protrusion.
10. The far-field voice module according to claim 9 is characterized in that the limiting protrusion includes a plurality of limiting protrusion sub-portions, and the plurality of limiting protrusion sub-portions are arranged in sequence and spaced apart around the connecting via.
11. The far-field voice module according to claim 8, wherein the transmitter A flange portion is provided between the two ends of the movable operating member along its extension direction, and the flange portion can be held between the circuit board and the inner cavity surface of the module housing in a manner that the flange portion moves along with the transmission operating member.
12. The far-field voice module according to claim 8 is characterized in that a lateral limit portion is provided on the inner cavity surface of the module shell, the transmission control member can drive the switch device to switch the switch state along the first direction, the transmission portion and the lateral limit portion are located on opposite sides of the transmission control member along the second direction, and the first direction and the second direction are perpendicular to each other.
13. The far-field voice module according to claim 1 is characterized in that the circuit board has an arrangement side and a back side arranged opposite to each other along its thickness direction, the multiple functional modules are arranged on the arrangement side of the circuit board, and the back side of the circuit board is arranged on the inner cavity surface of the module housing.
14. The far-field voice module according to claim 1 is characterized in that the multiple functional modules also include at least one of a Bluetooth module, a WiFi module, an infrared communication module, a mechanical control module, a switch module, an indicator light module and a light sensing module.
15. The far-field voice module according to claim 1 is characterized in that, when the multiple functional modules include an indicator light module, a light-transmitting area is provided on the module housing, and the indicator light module and the light-transmitting area are arranged opposite each other; a light guide is provided on the inner cavity surface of the module housing, and the light guide is sprayed black as a whole, and is silk-screened at a position opposite to the indicator light module to form a silk-screen printing position.
16. The far-field voice module according to claim 1 is characterized in that a convex column portion is provided on the inner cavity surface of the module housing, a threaded hole is provided on the convex column portion, and the convex column portion is provided with a threaded hole. The column part is used to support the circuit board; the screw passes through the corresponding through hole on the circuit board and is threadedly connected in the threaded hole to lock the circuit board.
17. The far-field voice module according to claim 16 is characterized in that a support rib is provided on the inner cavity surface of the module shell, the support rib and the convex column portion are arranged at intervals, and the support rib is used to support and tighten the circuit board.
18. The far-field voice module according to claim 17 is characterized in that a connecting boss is provided on the inner cavity surface of the module shell, the circuit board is arranged on the connecting boss, and the connecting boss, the boss portion and the supporting ribs are arranged in sequence and spaced apart along the width direction of the module shell.
19. The far-field speech module according to claim 1 is characterized in that the sound guiding cavity, the circuit board and the microphone module are stacked in sequence along the thickness direction of the far-field speech module.
20. A display device, characterized in that it comprises the far-field speech module described in any one of claims 1 to 19, wherein the outer opening end of the sound-conducting cavity is connected to the outside of the display device.