Microphone assembly and display device

Abstract

The present application provides a microphone assembly and a display device. The microphone assembly is used for a display device having a mounting portion, and the mounting portion is provided with an accommodating cavity. The microphone assembly comprises: a microphone circuit board arranged in the accommodating cavity and having sound pickup units; and a support comprising a main mounting plate, wherein the microphone circuit board is connected to one side of the main mounting plate, a sealing layer is provided between the microphone circuit board and the main mounting plate, protruding portions are arranged on the other side of the main mounting plate, the support is provided with first sound pickup holes, the first sound pickup holes pass through the main mounting plate and the protruding portions, the sound pickup units are opposite to and communicated with the first sound pickup holes, the mounting portion is provided with second sound pickup holes, the second sound pickup holes communicate the accommodating cavity with the outside, and each protruding portion at least partially extends into the corresponding second sound pickup hole. During mounting of the microphone assembly, the problem of inconsistent foam compression is avoided. Therefore, the sound pickup effect of the microphone assembly can be improved.

Description

Microphone components and display devices

[0001] Related applications

[0002] This application claims priority to the following Chinese patent applications: Chinese patent application No. 2024116283131, filed on November 14, 2024, entitled "Microphone Assembly and Display Device"; Chinese patent application No. 2024227877406, filed on November 14, 2024, entitled "Microphone Assembly and Display Device"; and Chinese patent application No. 2024115692437, filed on November 5, 2024, entitled "Microphone Assembly and Display Device," the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of sound pickup device technology, specifically to a microphone assembly and display device. Background Technology

[0004] Currently, some display devices are equipped with microphone circuit boards for sound pickup. The microphone circuit board has multiple sound pickup units. The mounting part of the display device (such as the device housing or frame) is provided with a receiving cavity, and the microphone circuit board is located in the receiving cavity. At the same time, the mounting part is provided with a sound pickup hole communicating with the receiving cavity. This allows the microphone circuit board to be hidden, so as to ensure the appearance of the display device is simple.

[0005] In related technologies, during the assembly of a display device, foam is placed between the microphone circuit board and the inner wall of the housing cavity. Then, a bracket locked to the mounting part presses the microphone circuit board firmly against the inner wall of the housing cavity, aligning the pickup unit with the pickup hole. After the microphone circuit board is installed, it compresses the foam, which ensures airtightness between the microphone circuit board and the inner wall of the housing cavity, thereby guaranteeing sound pickup performance.

[0006] However, the foam around the different pickup holes inside the cavity and the microphone circuit board may be compressed to varying degrees, which can lead to differences in airtightness at different pickup holes and thus affect the sound pickup effect. Summary of the Invention

[0007] This application provides a microphone assembly and a display device, which aim to improve the sound pickup effect of the microphone assembly.

[0008] The specific technical solution is as follows:

[0009] An embodiment of the first aspect of this application provides a microphone assembly for a display device having a mounting portion, the mounting portion having a receiving cavity, the microphone assembly comprising: a microphone circuit board disposed in the receiving cavity, the microphone circuit board having a pickup unit; a bracket including a main mounting plate, the microphone circuit board being connected to one side of the main mounting plate, a sealing layer being provided between the microphone circuit board and the main mounting plate, a protrusion being provided on the other side of the main mounting plate, the bracket having a first pickup hole penetrating the main mounting plate and the protrusion, the pickup unit being opposite to and communicating with the first pickup hole, the mounting portion having a second pickup hole communicating the receiving cavity with the outside, the protrusion being configured to at least partially extend into the second pickup hole.

[0010] In this embodiment of the microphone assembly, the microphone circuit board is connected to one side of the main mounting plate of the bracket, and a protrusion is provided on the other side of the main mounting plate. The first pickup hole of the bracket passes through the main mounting plate and the protrusion. When the microphone assembly is installed on the mounting part of the display device, the protrusion of the bracket at least partially extends into the second pickup hole of the mounting part of the display device. Compared with the installation method in the related art, the microphone circuit board in this application is not fixed by compression, which ensures that the microphone circuit board has good flatness. In addition, since the protrusion at least partially extends into the second pickup hole of the mounting part of the display device, the external sound is directly received by the pickup unit through the first pickup hole, so there is no need to provide foam for airtightness between the main mounting plate and the mounting part. In summary, when the microphone assembly in this embodiment of the application is installed, on the one hand, the microphone circuit board can be guaranteed to have good flatness, and on the other hand, there is no need to provide foam for airtightness between the main mounting plate and the mounting part, so the problem of inconsistent foam compression is avoided. Therefore, the pickup effect of the microphone assembly can be improved.

[0011] In some embodiments, the bracket further includes a connecting portion for connection with the main mounting plate.

[0012] In some embodiments, an adhesive layer is provided on the side of the main mounting plate away from the microphone circuit board, the adhesive layer being used to connect to the mounting portion.

[0013] The microphone assembly can be fixed to the mounting part by connecting the bracket's connecting part and the mounting part. Furthermore, the main mounting plate of the bracket is connected to the mounting part via an adhesive layer. This improves the connection stability between the bracket and the mounting part, thus ensuring the stability of the microphone assembly's sound pickup performance. On the other hand, the adhesive layer provides cushioning to reduce vibration transmission between the bracket and the mounting part, further contributing to the stability of the sound pickup performance.

[0014] In some embodiments, the microphone circuit board is provided with a plurality of spaced-apart connection holes for fasteners to pass through, so that the microphone circuit board is locked to the mounting portion by the fasteners.

[0015] In some embodiments, a buffer layer is provided between the main mounting plate and the mounting part. The buffer layer is elastically deformable and has clearance holes for the protrusion to pass through.

[0016] In some of these embodiments, the sealing layer is double-sided adhesive.

[0017] Using double-sided adhesive to bond the microphone circuit board to the main mounting plate ensures a tight seal between the two components and allows for screwless assembly. This simplifies the assembly process and improves the efficiency of microphone assembly.

[0018] In some embodiments, the microphone circuit board is provided with a positioning hole, and the main mounting plate is provided with a positioning post on the side near the microphone circuit board that is adapted to the positioning hole.

[0019] This setup allows for more precise positioning of the microphone circuit board during assembly with the bracket, thereby improving the positional accuracy between the two and ultimately ensuring better sound pickup.

[0020] In some embodiments, the bracket further includes a connecting portion connected to the main mounting plate. The connecting portion is used to connect to the mounting portion and includes: a first connecting plate, one end of which is connected to the main mounting plate; a second connecting plate, the other end of which is connected to the first connecting plate and is parallel to the main mounting plate; and a latch, which is disposed on the second connecting plate and is used to engage with the mounting portion.

[0021] The mounting section includes a receiving cavity, within which the microphone circuit board is housed. This provides protection for the microphone circuit board and its pickup unit. The first connecting plate and the main mounting plate can be angled, with the second connecting plate located at the end of the first connecting plate furthest from the main mounting plate. This extension of the first connecting plate allows the second connecting plate to be positioned outside the receiving cavity. Furthermore, the second connecting plate is parallel to the main mounting plate, and a latch is positioned on the second connecting plate, ensuring that the latch's engagement point with the mounting section is outside the receiving cavity. This facilitates alignment of the latch with the mounting holes during microphone assembly, reducing assembly difficulty and improving efficiency.

[0022] In some embodiments, the bracket further includes a support plate connected to the main mounting plate and also connected to the connecting portion, the support plate being perpendicular to the main mounting plate.

[0023] The support plate strengthens the main mounting plate, enhancing its structural strength and rigidity. This prevents structural damage and deformation, ensuring the microphone circuit board connected to the main mounting plate remains flat and thus maintains optimal sound pickup.

[0024] In some embodiments, the support plate is provided with cable routing holes for the microphone circuit board cables to pass through. This facilitates cable routing.

[0025] In some embodiments, the bracket further includes reinforcing ribs connected to the support plate and also connected to the connecting portion.

[0026] By adding reinforcing ribs, the connection strength between the support plate and the connecting part can be improved, which helps to ensure the overall structural stability of the support.

[0027] In some embodiments, the number of protrusions is the same as the number of the first pickup holes, and each protrusion has a corresponding first pickup hole.

[0028] In some embodiments, the number of protrusions is less than the number of first pickup holes, and each protrusion is provided with two or more first pickup holes.

[0029] In some embodiments, the pickup unit is located on the side of the wind circuit board away from the main mounting plate, and the microphone circuit board has a third pickup hole, which is opposite to the pickup unit and is opposite to and connected to the first pickup hole.

[0030] To maintain a flat microphone circuit board, the pickup unit can be positioned on the side of the microphone circuit board away from the main mounting plate. In this case, a third pickup hole can be provided on the microphone circuit board. This allows external sounds to be received by the pickup unit through both the first and third pickup holes, thus improving both the flatness of the microphone circuit board and the pickup effect.

[0031] In some embodiments, the distance from the end of the third pickup hole near the pickup unit to the end of the first pickup hole away from the pickup unit is L1, and the depth of the first pickup hole is L2, wherein L2 ≥ 1 / 2L1.

[0032] Under the above conditions, the sound pickup effect is significantly improved.

[0033] In some embodiments, the diameter of the first pickup hole gradually increases from the end closer to the microphone circuit board to the end farther away from the microphone circuit board.

[0034] That is, the diameter of the first pickup hole closer to the user is larger than the diameter of the end farther from the user. This increases the area for picking up the user's voice signal, thereby improving the efficiency of voice signal pickup.

[0035] An embodiment of the second aspect of this application provides a display device, the display device comprising: a mounting portion having a receiving cavity, the mounting portion having a second pickup hole communicating with the receiving cavity; and a microphone assembly as described in any of the embodiments of the first aspect above, wherein the microphone circuit board and the main mounting plate are both located within the receiving cavity, and at least a portion of the protrusion is located within the second pickup hole.

[0036] In the display device of this application embodiment, the microphone assembly, during installation, ensures good flatness of the microphone circuit board and eliminates the need for foam between the main mounting plate and the mounting part, thus avoiding the problem of inconsistent foam compression. Therefore, the sound pickup effect of the microphone assembly can be improved.

[0037] In this embodiment of the display device, the microphone circuit board of the microphone assembly is connected to one side of the main mounting plate of the bracket. A protrusion is provided on the other side of the main mounting plate, and the first pickup hole of the bracket passes through the main mounting plate and the protrusion. When the microphone assembly is mounted on the mounting part of the display device, the protrusion of the bracket at least partially extends into the second pickup hole of the mounting part of the display device. Compared with the mounting methods in related technologies, the microphone circuit board in this application is not fixed by compression, thus ensuring good flatness of the microphone circuit board. Furthermore, since the protrusion at least partially extends into the second pickup hole of the mounting part of the display device, external sounds are directly received by the pickup unit through the first pickup hole, eliminating the need for airtight foam between the main mounting plate and the mounting part.

[0038] Therefore, during microphone assembly installation, the microphone circuit board can be ensured to have good flatness, and there is no need to place foam between the main mounting plate and the mounting part to ensure airtightness, thus avoiding the problem of inconsistent foam compression. This improves the microphone assembly's sound pickup performance.

[0039] In some embodiments, the second pickup hole is a conical hole, and the protrusion is a frustum structure adapted to the conical hole.

[0040] The second pickup hole is tapered, allowing the protrusion to more easily enter during assembly of the bracket and mounting part, thus improving assembly efficiency. Furthermore, the protrusion employs a frustum-shaped structure to match the tapered hole, preventing noticeable gaps between the protrusion and the hole wall. This enhances aesthetics and avoids dust accumulation caused by such gaps. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0042] Figure 1 is a schematic diagram of the microphone assembly provided in the first embodiment of this application;

[0043] Figure 2 is a front view of the microphone assembly provided in the first embodiment of this application;

[0044] Figure 3 is a structural schematic diagram of the bracket provided in the first embodiment of this application;

[0045] Figure 4 is a bottom view of the bracket provided in the first embodiment of this application;

[0046] Figure 5 is a schematic diagram of section AA in Figure 4;

[0047] Figure 6 is a schematic diagram of the microphone assembly in the second embodiment of this application;

[0048] Figure 7 is a schematic diagram of the microphone assembly installed in the mounting part according to the first embodiment of this application;

[0049] Figure 8 is a bottom view of the microphone assembly provided in the first embodiment of this application after it is installed in the mounting part;

[0050] Figure 9 is a schematic diagram of section BB in Figure 8;

[0051] Figure 10 is an enlarged schematic diagram of part C in Figure 9;

[0052] Figure 11 is a schematic diagram (exploded view) of the microphone assembly installed in the mounting part according to the third embodiment of this application;

[0053] Figure 12 is a schematic diagram (partial exploded view) of the microphone assembly installed in the mounting part according to the third embodiment of this application;

[0054] Figure 13 is a front view of the microphone assembly installed in the mounting section according to the third embodiment of this application;

[0055] Figure 14 is a schematic diagram of the DD section in Figure 13;

[0056] Figure 15 is an enlarged schematic diagram of part E in Figure 14;

[0057] Figure 16 is a schematic diagram (exploded view) of the microphone assembly installed in the mounting part according to the fourth embodiment of this application;

[0058] Figure 17 is a schematic diagram (partial exploded view) of the microphone assembly installed in the mounting part according to the third embodiment of this application.

[0059] Explanation of reference numerals in the attached drawings: 10, Microphone assembly; 100, Microphone circuit board; 110, Pickup unit; 101, Third pickup hole; 102, Positioning hole; 103, Connection hole; 200, Bracket; 210, Main mounting plate; 211, Protrusion; 212, Positioning post; 220, Connecting part; 221, First connecting plate; 222, Second connecting plate; 223, Buckle; 230, First pickup hole; 240, Support plate; 241, Cable guide hole; 250, Reinforcing rib; 300, Buffer layer; 400, Sealing layer; 401, Through hole; 20, Mounting part; 21, Second pickup hole; 22, Receiving cavity.

[0060] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Embodiments of the present invention

[0061] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0062] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0063] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0065] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0066] As described in the background section, in the assembly of related display devices, foam is placed between the microphone circuit board and the mounting portion (the inner wall of the receiving cavity). Then, a bracket locked to the mounting portion presses the microphone circuit board against the inner wall of the receiving cavity, aligning the pickup unit with the pickup hole. After the microphone circuit board is installed, it compresses the foam, which ensures airtightness between the microphone circuit board and the mounting portion, thereby guaranteeing sound pickup performance.

[0067] However, the foam at different pickup holes is prone to uneven compression, which can lead to differences in airtightness at different pickup holes, thus affecting the sound pickup effect.

[0068] The applicant conducted an in-depth study on the reasons for the differences in airtightness at different microphone holes. The investigation revealed that the primary cause lies in the ease with which the support frame can deform during manufacturing. This uneven pressure on the microphone circuit board when the plastic support frame presses against it leads to inconsistent stress, resulting in poor flatness of the circuit board. This reduced flatness also causes inconsistent compression of the foam at different microphone holes, thus creating the differences in airtightness.

[0069] Based on the above, the applicant proposed the technical solution in this application embodiment. Specifically, the original method of using a plastic bracket to press against the microphone circuit board has been eliminated. Instead, the microphone circuit board is connected to one side of the main mounting plate of the bracket, and a protrusion is provided on the other side of the main mounting plate. The first pickup hole of the bracket passes through the main mounting plate and the protrusion. During installation, the protrusion of the bracket at least partially extends into the second pickup hole of the mounting part of the display device.

[0070] This design prevents the microphone circuit board from being fixed by compression, thus avoiding upward pressure and ensuring its flatness. Furthermore, the protrusion extends at least partially into the second pickup hole of the display device's mounting portion. This allows external sound to be received directly by the pickup unit through the first pickup hole, eliminating the need for airtight foam between the main mounting plate and the mounting portion, and avoiding issues related to inconsistent foam compression. This improves sound pickup performance.

[0071] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0072] This application provides a microphone assembly, as shown in Figures 1 to 5, 9, and 10, or Figures 11 to 15, or Figures 16 and 17. The microphone assembly 10 is used in a display device having a mounting portion 20. The mounting portion 20 has a receiving cavity 22. The microphone assembly 10 includes a microphone circuit board 100 and a bracket 200. The microphone circuit board 100 is disposed in the receiving cavity 22 and has a pickup unit 110. The bracket 200 includes a main mounting plate 210. The microphone circuit board 100 is connected to one side of the main mounting plate 210. A sealing layer 400 is provided between the microphone circuit board 100 and the main mounting plate 210. A protrusion 211 is provided on the other side of the main mounting plate 210. The bracket 200 has a first pickup hole 230 that penetrates the main mounting plate 210 and the protrusion 211. The pickup unit 110 is opposite to and communicates with the first pickup hole 230. The mounting portion 20 has a second pickup hole 21 (see Figure 10), which connects the receiving cavity 22 to the outside, and the protrusion 211 is configured to extend at least partially into the second pickup hole 21.

[0073] Specifically, the fact that the pickup unit 110 is opposite to and connected to the first pickup hole 230 can be understood as the pickup unit 110 being perpendicular to the axis of the first pickup hole 230, and the pickup unit 110 being vertically aligned with the first pickup hole 230. The protrusion 211 is configured to at least partially extend into the second pickup hole 21, thus indicating that the first pickup hole 230 and the second pickup hole 21 are coaxially arranged. In addition, a sealing layer 400 is provided between the microphone circuit board 100 and the main mounting plate 210. The sealing layer 400 is used to keep the microphone circuit board 100 and the main mounting plate 210 sealed to ensure the sound pickup effect.

[0074] The mounting part 20 can be the frame, casing, or structural component fixedly connected to the casing of the display device.

[0075] It is understood that there can be multiple pickup units 110, that is, multiple pickup units 110 are provided on the microphone circuit board 100. At this time, there are also multiple first pickup holes 230, and the number of first pickup holes 230 is consistent with the number of pickup units 110, so that there is a one-to-one correspondence between the pickup units 110 and the first pickup holes 230.

[0076] In this embodiment, the microphone assembly 10 has a microphone circuit board 100 connected to one side of the main mounting plate 210 of the bracket 200. A protrusion 211 is provided on the other side of the main mounting plate 210. The first pickup hole 230 of the bracket 200 passes through the main mounting plate 210 and the protrusion 211. When the microphone assembly 10 is installed on the mounting portion 20 of the display device, the protrusion 211 of the bracket 200 at least partially extends into the second pickup hole 21 of the mounting portion 20 of the display device. Compared with the installation methods in related technologies, the microphone circuit board 100 in this application is not fixed by compression, thus ensuring good flatness of the microphone circuit board 100.

[0077] In addition, since the protrusion 211 extends at least partially into the second sound pickup hole 21 of the mounting portion 20 of the display device, external sounds are directly received by the sound pickup unit 110 through the first sound pickup hole 230. Thus, there is no need to provide foam for airtightness between the main mounting plate 210 and the mounting portion 20.

[0078] In summary, during installation, the microphone assembly 10 in this embodiment ensures good flatness of the microphone circuit board 100 and eliminates the need for airtight foam between the main mounting plate 210 and the mounting portion 20, thus avoiding the problem of inconsistent foam compression. Therefore, the sound pickup effect of the microphone assembly 10 can be improved.

[0079] As shown in Figures 1, 9, and 10, in some embodiments, the bracket 200 further includes a connecting portion 220 connected to the main mounting plate 210, which is used to connect to the mounting portion 20 of the display device. This achieves the mounting and fixing of the microphone assembly 10 in the display device.

[0080] In one embodiment, an adhesive layer (not shown) is provided on the side of the main mounting plate 210 away from the microphone circuit board 100, the adhesive layer being used to connect to the mounting portion 20 of the display device.

[0081] The microphone assembly 10 can be fixed to the mounting part 20 by connecting the connecting part 220 and the mounting part 20 of the bracket 200. Furthermore, the main mounting plate 210 of the bracket 200 is connected to the mounting part 20 via an adhesive layer. This improves the connection stability between the bracket 200 and the mounting part 20, thereby ensuring the stability of the microphone assembly 10's sound pickup performance. Additionally, the adhesive layer provides cushioning to reduce vibration transmission between the bracket 200 and the mounting part 20, further contributing to the stability of the sound pickup performance.

[0082] In one embodiment, the adhesive layer is double-sided tape. Using double-sided tape to bond the main mounting plate 210 and the mounting part 20 improves the assembly efficiency of the microphone assembly 10 and the mounting part 20, and also helps to save costs.

[0083] Please refer to Figure 2. It can be understood that since the main mounting plate 210 has a protrusion 211 on the side away from the microphone circuit board 100, the double-sided adhesive used to connect the main mounting plate 210 and the mounting part 20 must avoid the protrusion 211. Therefore, multiple small segments of double-sided adhesive can be used to bond the main mounting plate 210 and the mounting part 20.

[0084] As shown in Figure 11 or Figure 16, in some other embodiments, the microphone circuit board 100 is provided with a plurality of spaced-apart connection holes 103 for fasteners to pass through, so that the microphone circuit board 100 is locked to the mounting portion 20 by the fasteners. This also enables the microphone assembly 10 to be mounted and fixed in the display device.

[0085] As shown in Figure 11 or Figure 16, in one embodiment, a buffer layer 300 is provided between the main mounting plate 210 and the mounting part 20. The buffer layer 300 is elastically deformable and has clearance holes for the protrusion to pass through.

[0086] By providing a buffer layer 300 between the main mounting plate 210 and the mounting part 20, on the one hand, the gap between the main mounting plate 210 and the mounting part 20 can be sealed by the buffer layer 300 to prevent sound wave leakage and improve the sound pickup effect; on the other hand, the impact of vibration on the display device on the sound pickup unit 110 can also be reduced.

[0087] Specifically, the main mounting plate 210 has a flat, plate-like structure, with the protrusion 111 protruding from one side of the main mounting plate 210. The cross-sectional view of the main mounting plate 210 and the protrusion 111 shows a T-shaped structure. A buffer layer 300 is disposed around the perimeter of the main mounting plate 210, and clearance holes corresponding to the protrusion 111 are formed on the buffer layer 300 to allow clearance from the protrusion 111. The buffer layer 300 can be made of EVA material and can be adhered to the main mounting plate 210 or the mounting part 20 for easy installation.

[0088] In one embodiment, the sealing layer 400 is double-sided adhesive. Specifically, the double-sided adhesive can be foam double-sided adhesive, which has a central foam layer and adhesive layers on both sides of the foam layer. The foam layer is non-porous foam, which gives the foam double-sided adhesive good sealing properties.

[0089] The sealing layer 400 is double-sided adhesive, so that the microphone circuit board 100 can be connected to the main mounting plate 210 through the double-sided adhesive. On the one hand, it can ensure the sealing between the microphone circuit board and the main mounting plate 210, and on the other hand, it can realize screwless assembly of the microphone circuit board 100 and the main mounting plate 210. The assembly process is relatively simple and helps to improve the assembly efficiency of the microphone assembly 10.

[0090] Of course, in some other embodiments, the microphone circuit board 100 and the main mounting plate 210 can also be connected by screws, rivets or other means.

[0091] In one embodiment, the sealing layer 400 is provided with a through hole 401, which is disposed opposite to the first pickup hole 230. In this way, external sounds can be received by the pickup unit 110 after passing through the first pickup hole 230 and the through hole 401.

[0092] Furthermore, the area of ​​the first pickup hole 230 projected onto the microphone circuit board 100 is smaller than the area of ​​the through hole 401 projected onto the microphone circuit board 100. This arrangement ensures that all sound signals entering the first pickup hole 230 can be received by the pickup unit 110, and prevents the phenomenon of some sound signals entering the first pickup hole 230 being blocked by the sealing layer 400 and reflected.

[0093] As shown in Figure 6, in some embodiments, the microphone circuit board 100 is provided with a positioning hole 102, and the main mounting plate 210 is provided with a positioning post 212 that matches the positioning hole 102 on the side near the microphone circuit board 100.

[0094] When the microphone circuit board 100 is mounted on the bracket 200, the positioning post 212 passes through the positioning hole 102. This arrangement allows for more precise positioning of the microphone circuit board 100 during the assembly process between the microphone circuit board 100 and the bracket 200, thereby improving the positional accuracy between the two and thus helping to ensure sound pickup performance.

[0095] As shown in Figures 1, 2, and 10, in some embodiments, the bracket 200 further includes a connecting portion 220 connected to the main mounting plate 210. The connecting portion 220 is used to connect to the mounting portion 20 of the display device. The connecting portion 220 includes a first connecting plate 221, a second connecting plate 222, and a buckle 223. One end of the first connecting plate 221 is connected to the main mounting plate 210, and the second connecting plate 222 is connected to the other end of the first connecting plate 221. The second connecting plate 222 is parallel to the main mounting plate 210. The buckle 223 is disposed on the second connecting plate 222 and is used to engage with the mounting portion 20.

[0096] The mounting section 20 is provided with a receiving cavity 22, in which the microphone circuit board 100 is placed. This provides protection for the microphone circuit board 100 and the pickup unit 110 thereon.

[0097] In this embodiment, the first connecting plate 221 and the main mounting plate 210 can be angled together, and the second connecting plate 222 is located at the end of the first connecting plate 221 away from the main mounting plate 210. Thus, by utilizing the extension effect of the first connecting plate 221, the second connecting plate 222 can be positioned outside the receiving cavity 22. Furthermore, the second connecting plate 222 is parallel to the main mounting plate 210, and a latch 223 is disposed on the second connecting plate 222, such that the connection position between the latch 223 and the mounting part 20 is outside the receiving cavity 22. This facilitates the alignment of the latch 223 with the locking holes on the mounting part 20 when assembling the microphone assembly 10 and the mounting part 20, thereby reducing assembly difficulty and improving assembly efficiency.

[0098] As shown in Figures 3, 4, 5 and 10, in one embodiment, the first connecting plate 221 is perpendicular to the main mounting plate 210. In this way, when the buckle 223 is engaged with the mounting part 20, the first connecting plate 221 can provide more stable support for the main mounting plate 210, thereby improving the connection stability between the bracket 200 and the mounting part 20.

[0099] Furthermore, there can be two connecting parts 220, which are located at opposite ends of the main mounting plate 210. This arrangement can improve the connection stability between the bracket 200 and the mounting part 20.

[0100] As shown in Figure 3, in one embodiment, the bracket 200 further includes a support plate 240, which is connected to the main mounting plate 210 and also to the connecting portion 220. The support plate 240 is perpendicular to the main mounting plate 210. The support plate 240 can structurally strengthen the main mounting plate 210, thereby improving its structural strength and rigidity. This ensures that the main mounting plate 210 is less prone to structural damage and deformation, which also helps maintain the flatness of the microphone circuit board 100 connected to the main mounting plate 210, thus maintaining better sound pickup performance.

[0101] As shown in Figures 3 and 5, the support plate 240 further includes at least one cable pass-through hole 241. Typically, the microphone circuit board 100 is connected to cables, such as power cables for connection to a power source and signal cables for connection to a controller. The cable pass-through hole 241 on the support plate 240 allows the cables of the microphone circuit board 100 to pass through. This facilitates cable routing.

[0102] As shown in Figure 3, in one embodiment, the bracket 200 further includes a reinforcing rib 250, which is connected to the support plate 240 and also to the connecting portion 220. By providing the reinforcing rib 250, the connection strength between the support plate 240 and the connecting portion 220 can be improved, thereby helping to ensure the overall structural stability of the bracket 200.

[0103] As shown in Figures 1 and 5, or Figures 16 and 17, in some of these embodiments, the number of protrusions 211 is the same as the number of first pickup holes 230, and each protrusion 211 is provided with a corresponding first pickup hole 230.

[0104] In this embodiment, by providing a plurality of spaced protrusions 211 on the main mounting plate 210 and providing a first pickup hole 230 on the protrusions 211, the number of protrusions 211 corresponds to the number of pickup units 110, thereby ensuring that each pickup unit 110 corresponds to one protrusion 211.

[0105] Specifically, when multiple protrusions 211 are provided on the main mounting plate 210, the protrusions 211 are constructed as columnar structures, such as cylindrical, prismatic, etc.

[0106] As shown in Figures 11 and 12, in some other embodiments, the number of protrusions 211 is less than the number of first pickup holes 230, and each protrusion 211 is provided with two or more first pickup holes 230.

[0107] Specifically, the protrusion 211 can be constructed as a long strip, and the extension direction of the protrusion 211 is the same as the extension direction of the main mounting plate 210. A plurality of spaced first pickup holes 230 are provided along the extension direction of the protrusion 211, and the first pickup holes 230 correspond one-to-one with the pickup unit 110.

[0108] By providing multiple spaced-apart first pickup holes 230 on the protrusion 211, the number of the first pickup holes 230 corresponds to the number of pickup units 110 mounted on the microphone circuit board 100, and the positions of the first pickup holes 230 correspond to the positions of the pickup units 110. Furthermore, by providing a long, narrow protrusion 211, the structure of the bracket 200 can be simplified, while also ensuring the strength of the protrusion 200.

[0109] It should be understood that the shape of the second pickup hole 21 on the mounting portion 20 corresponds to the shape of the protrusion 211, so that the protrusion 211 can be installed into the second pickup hole 21. When the protrusion 211 is an elongated protrusion structure, the second pickup hole 21 provided on the mounting portion 20 is also an elongated hole. In this embodiment, the two ends of the protrusion 211 along the length direction are rounded.

[0110] As shown in Figure 10, in some embodiments, the microphone pickup unit 110 is disposed on the side of the wind circuit board 100 away from the main mounting plate 210, and the microphone circuit board 100 is provided with a third pickup hole 101, which is opposite to the microphone pickup unit 110 and is opposite to and connected to the first pickup hole 230.

[0111] To maintain good flatness of the microphone circuit board 100, the pickup unit 110 can be positioned on the side of the microphone circuit board 100 away from the main mounting plate 210. In this case, a third pickup hole 101 can be provided on the microphone circuit board 100, with the third pickup hole 101 facing the pickup unit 110 and facing and communicating with the first pickup hole 230. In this way, external sounds can be received by the pickup unit 110 through the first pickup hole 230 and the third pickup hole 101, thereby ensuring good flatness of the microphone circuit board 100 and improving the sound pickup effect.

[0112] Understandably, the sealing layer 400 is located between the microphone circuit board 100 and the main mounting plate 210, and surrounds the first pickup hole 230 and the third pickup hole 101, thereby forming a seal around the first pickup hole 230 and the third pickup hole 101 to ensure the sound pickup effect.

[0113] As shown in Figure 10, in some embodiments, the distance from the end of the third pickup hole 101 near the pickup unit 110 to the end of the first pickup hole 230 away from the pickup unit 110 is L1, and the depth of the first pickup hole 230 is L2, wherein L2≥1 / 2L1.

[0114] The depth L2 of the first pickup hole 230 can also be understood as the distance from the end of the first pickup hole 230 near the pickup unit 110 to the end of the first pickup hole 230 away from the pickup unit 110.

[0115] Extensive testing revealed that, under the aforementioned conditions, the sound pickup effect is significantly improved.

[0116] As shown in Figures 5 and 10, in some embodiments, the diameter of the first pickup hole 230 gradually increases from the end near the microphone circuit board 100 to the end away from the microphone circuit board 100. This arrangement makes the first pickup hole 230 horn-shaped, meaning the diameter of the first pickup hole 230 near the user is larger than the diameter of the end away from the user. This increases the area for picking up the user's voice signal, thereby improving the sound signal pickup efficiency. As shown in Figures 7, 8, 9, and 10, an embodiment of the second aspect of this application provides a display device including a mounting portion 20 and a microphone assembly 10 as described in any of the above embodiments. The mounting portion 20 forms a receiving cavity 22 and is provided with a second pickup hole 21 communicating with the receiving cavity 22. The microphone circuit board 100 and the main mounting plate 210 are both located within the receiving cavity 22, and at least a portion of the protrusion 211 is located within the second pickup hole 21.

[0117] Among them, display devices can be commercial display terminals, monitors, televisions, and other products with display functions.

[0118] The mounting portion 20 has a receiving cavity 22, in which the microphone circuit board 100 and the main mounting plate 210 are both located. In this way, the mounting portion 20 can protect the microphone circuit board 100 and the pickup unit 110 located on the microphone circuit board 100.

[0119] Referring to Figures 1 to 5, in the display device of this embodiment, the microphone circuit board 100 of the microphone assembly 10 is connected to one side of the main mounting plate 210 of the bracket 200. A protrusion 211 is provided on the other side of the main mounting plate 210. The first pickup hole 230 of the bracket 200 passes through the main mounting plate 210 and the protrusion 211. When the microphone assembly 10 is installed on the mounting portion 20 of the display device, the protrusion 211 of the bracket 200 at least partially extends into the second pickup hole 21 of the mounting portion 20 of the display device. Compared with the installation methods in related technologies, the microphone circuit board 100 in this application is not fixed by compression, thus ensuring good flatness of the microphone circuit board 100.

[0120] In addition, since the protrusion 211 extends at least partially into the second sound pickup hole 21 of the mounting portion 20 of the display device, external sounds are directly received by the sound pickup unit 110 through the first sound pickup hole 230. Thus, there is no need to provide foam for airtightness between the main mounting plate 210 and the mounting portion 20.

[0121] Therefore, during installation, the microphone assembly 10 ensures good flatness of the microphone circuit board 100 and eliminates the need for airtight foam between the main mounting plate 210 and the mounting portion 20, thus avoiding the problem of inconsistent foam compression. This improves the sound pickup performance of the microphone assembly 10.

[0122] In some embodiments, the bracket 200 further includes a connecting portion 220 connected to the main mounting plate 210, the connecting portion 220 being used to connect to the mounting portion 20 of the display device. This achieves the mounting and securing of the microphone assembly 10 in the display device. In other embodiments, the microphone circuit board 100 is provided with a plurality of spaced-apart connecting holes 103 for fasteners to pass through, so that the microphone circuit board 100 is locked to the mounting portion 20 by fasteners. This also achieves the mounting and securing of the microphone assembly 10 in the display device.

[0123] As shown in Figure 10, in some embodiments, the second pickup hole 21 is a tapered hole, and the protrusion 211 is a frustum-shaped structure adapted to the tapered hole. The tapered shape of the second pickup hole 21 allows the protrusion 211 to more easily enter the second pickup hole 21 during assembly of the bracket 200 and the mounting part 20, thus improving assembly efficiency. Furthermore, by using a frustum-shaped structure to fit the tapered hole in the second pickup hole 21, a noticeable gap can be avoided between the protrusion 211 and the hole wall of the second pickup hole 21. This improves aesthetics and prevents dust accumulation caused by noticeable gaps.

[0124] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A microphone assembly for a display device having a mounting portion, said mounting portion having a receiving cavity, wherein, The microphone assembly includes: A microphone circuit board is disposed in the receiving cavity, and the microphone circuit board has a pickup unit; The bracket includes a main mounting plate, a microphone circuit board connected to one side of the main mounting plate, a sealing layer between the microphone circuit board and the main mounting plate, a protrusion on the other side of the main mounting plate, a first pickup hole penetrating the main mounting plate and the protrusion, a pickup unit opposite to and communicating with the first pickup hole, a second pickup hole communicating the receiving cavity with the outside, and the protrusion configured to at least partially extend into the second pickup hole.

2. The microphone assembly according to claim 1, wherein, The bracket also includes a connecting part that is connected to the main mounting plate, the connecting part being used to connect with the mounting part.

3. The microphone assembly according to claim 2, wherein, An adhesive layer is provided on the side of the main mounting plate away from the microphone circuit board, and the adhesive layer is used to connect with the mounting part.

4. The microphone assembly according to claim 1, wherein, The microphone circuit board is provided with a plurality of spaced-apart connection holes, which are used for fasteners to pass through so that the microphone circuit board is locked to the mounting part by the fasteners.

5. The microphone assembly according to claim 4, wherein, A buffer layer is provided between the main mounting plate and the mounting part. The buffer layer is elastically deformable and has clearance holes for the protrusion to pass through.

6. The microphone assembly of claim 1, wherein, The sealing layer is double-sided adhesive.

7. The microphone assembly of claim 1, wherein, The microphone circuit board is provided with positioning holes, and the main mounting plate is provided with positioning posts that are adapted to the positioning holes on the side near the microphone circuit board.

8. The microphone assembly according to claim 1, wherein, The bracket further includes a connecting portion for connection to the main mounting plate, the connecting portion being used for connection with the mounting portion, the connecting portion comprising: A first connecting plate, one end of which is connected to the main mounting plate; A second connecting plate is connected to the other end of the first connecting plate, and the second connecting plate is parallel to the main mounting plate. A snap-fit ​​is provided on the second connecting plate and is used to engage with the mounting part.

9. The microphone assembly of claim 8, wherein, The bracket also includes a support plate, which is connected to the main mounting plate and also connected to the connecting part. The support plate is perpendicular to the main mounting plate.

10. The microphone assembly of claim 9, wherein, The support plate is provided with a wire-passing hole, which is used to allow the cables of the microphone circuit board to pass through.

11. The microphone assembly of claim 9, wherein, The bracket also includes reinforcing ribs, which are connected to the support plate and the connecting portion.

12. The microphone assembly of claim 1, wherein, The number of protrusions is the same as the number of the first pickup holes, and each protrusion is provided with a corresponding first pickup hole.

13. The microphone assembly of claim 1, wherein, The number of protrusions is less than the number of the first pickup holes, and each protrusion is provided with two or more of the first pickup holes.

14. The microphone assembly of claim 1, wherein, The pickup unit is located on the side of the wind circuit board away from the main mounting plate. The microphone circuit board has a third pickup hole, which is opposite to the pickup unit and is opposite to and connected to the first pickup hole.

15. The microphone assembly of claim 14, wherein, The distance from the end of the third pickup hole near the pickup unit to the end of the first pickup hole away from the pickup unit is L1, and the depth of the first pickup hole is L2, wherein L2 ≥ 1 / 2L1.

16. The microphone assembly of claim 1, wherein, The diameter of the first pickup hole gradually increases from the end closest to the microphone circuit board to the end furthest from the microphone circuit board.

17. A display device, wherein, include: The mounting part has a receiving cavity and is provided with a second pickup hole that communicates the receiving cavity with the outside. as well as The microphone assembly according to any one of claims 1 to 16, wherein the microphone circuit board and the main mounting plate are both located within the receiving cavity, and at least a portion of the protrusion is located within the second pickup hole.

18. The display device according to claim 17, wherein, The second pickup hole is a conical hole, and the protrusion is a frustum structure adapted to the conical hole.

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