Microphone circuit board, microphone assembly and display device

Abstract

The utility model provides a microphone circuit board, a microphone assembly and a display device. The microphone circuit board is used for the display equipment with a mounting part, the mounting part is provided with a containing cavity, and the microphone circuit board comprises a circuit board body arranged in the containing cavity; the pickup unit is arranged on the first side of the circuit board body; the convex part is arranged on the second side of the circuit board body, the microphone circuit board is provided with a first pickup hole, the first pickup hole penetrates through the circuit board body and the convex part, and the pickup unit is opposite to and communicated with the first pickup hole; the mounting part is provided with a second pickup hole, the accommodating cavity is communicated with the outside through the second pickup hole, and the convex part is configured to at least partially extend into the second pickup hole. In this way, external sound can be directly received by the pickup unit through the first pickup hole, the airtightness between the pickup unit and the second pickup hole does not need to be ensured by arranging a sealing layer, and the problem that the airtightness at different pickup holes is different due to the fact that the compression degree of the sealing layer is inconsistent is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sound pickup devices, in particular to a microphone circuit board, a microphone assembly and a display device. BACKGROUND

[0002] Most current display devices are equipped with microphone circuit boards for sound pickup, and the microphone circuit board has multiple sound pickup units. The mounting part (such as the device shell or the bezel) of the display device is generally provided with a receiving cavity, and the microphone circuit board is arranged in the receiving cavity, and the mounting part is provided with a sound pickup hole communicating with the receiving cavity, so that the sound pickup effect can be ensured while the microphone circuit board is hidden to make the appearance of the display device simple.

[0003] In some display devices in the related art, a sealing layer is arranged between the microphone circuit board and the mounting part, and the microphone circuit board is pressed by a bracket attached to the mounting part to fix the microphone circuit board to the inner wall of the receiving cavity and make the sound pickup units correspond to the sound pickup hole. The microphone circuit board is pressed against the sealing layer after installation, and the sealing layer is used to ensure the air tightness between the sound pickup units and the sound pickup hole, thereby ensuring the sound pickup effect.

[0004] However, the sealing layers at different sound pickup holes are prone to inconsistent pressing degrees, resulting in differences in air tightness at different sound pickup holes, thereby adversely affecting the sound pickup effect. Invention content

[0005] The present application provides a microphone circuit board, a microphone assembly and a display device, which aims to improve the sound pickup effect.

[0006] The specific technical solutions are as follows:

[0007] An embodiment of the first aspect of the present application provides a microphone circuit board for a display device having a mounting part, the mounting part being provided with a receiving cavity, the microphone circuit board comprising: a circuit board body arranged in the receiving cavity; a sound pickup unit arranged on a first side of the circuit board body; and a protruding part arranged on a second side of the circuit board body, the microphone circuit board having a first sound pickup hole penetrating through the circuit board body and the protruding part, the sound pickup unit being opposite and communicating with the first sound pickup hole; wherein the mounting part has a second sound pickup hole communicating the receiving cavity with the outside, and the protruding part is configured to at least partially extend into the second sound pickup hole.

[0008] The microphone circuit board in the embodiments of the present application, wherein the pickup unit is arranged on the first side of the circuit board body, the protruding part is arranged on the second side of the circuit board body, and the pickup unit is opposite to and communicates with the first pickup hole penetrating through the circuit board body and the protruding part. When the microphone circuit board is installed on the mounting part of the display device, at least part of the protruding part extends into the second pickup hole of the mounting part of the display device. In this way, the sound from the outside can be directly received by the pickup unit through the first pickup hole, so that the sealing layer does not need to be arranged to ensure the air tightness between the pickup unit and the second pickup hole on the mounting part, and the problem of different air tightnesses at different pickup holes due to inconsistent compression of the sealing layer is avoided. Therefore, the pickup effect of the microphone circuit board can be improved.

[0009] In some embodiments, the protruding part is a tubular structure, and the protruding part is connected to the circuit board body by welding.

[0010] The protruding part is connected to the circuit board body by welding. By means of welding connection, the hollow part of the tubular structure and the opening part on the circuit board body have good air tightness, thereby facilitating the guarantee of the pickup effect.

[0011] In some embodiments, the second side of the circuit board body is provided with a groove, and the groove surrounds the protruding part. The groove is used for accommodating the solder used for welding.

[0012] The groove has two functions. On the one hand, the groove can position the solder, and prevent the molten solder from overflowing during the welding process. In this way, the width of the weld formed after the welding is completed can be kept as a preset width. On the other hand, the groove can accommodate the molten solder, so that the weld does not obviously protrude from the surface of the circuit board body after the welding is completed. In this way, the uneven phenomenon of the surface of the circuit board body can be avoided, and the circuit board body can be better fitted to the side wall of the accommodating cavity.

[0013] In some embodiments, the protruding part is a tubular structure, and the protruding part is connected to the circuit board body by welding.

[0014] The protruding part can also be bonded to the circuit board body by means of curable glue (such as UV glue, heat-curable glue, etc.), so as to realize the connection of the protruding part and the circuit board body.

[0015] In some embodiments, the microphone circuit board further comprises a sealing part surrounding the protruding part. The sealing part is connected to the protruding part and the circuit board body, and the sealing part is formed by curing of sealing glue.

[0016] In the case that the protruding portion is connected to the circuit board body in a bonding manner, a sealing portion can be further arranged, which is connected to the protruding portion and the circuit board body, so as to wrap the connection position between the protruding portion and the circuit board body, thereby making the hollow portion of the tubular structure and the opening portion on the circuit board body have good air tightness, and thus facilitating guaranteeing the sound pickup effect.

[0017] The embodiment of the second aspect of the present application provides a microphone assembly, which comprises: a mounting support, the mounting support comprising a support body and a positioning portion connected to the support body, the support body being connectable to the mounting portion; and the microphone circuit board in any of the above embodiments, the circuit board body being provided with a positioning hole, and the positioning portion being matched with the positioning hole.

[0018] In the case that the microphone assembly is connected to the mounting portion of the display device, at least part of the protruding portion of the microphone circuit board extends into the second sound pickup hole of the mounting portion of the display device. In this way, external sound can be directly received by the sound pickup unit through the first sound pickup hole, so that a sealing layer does not need to be arranged to guarantee the air tightness between the sound pickup unit and the second sound pickup hole on the mounting portion, and the problem of different air tightnesses at different sound pickup holes due to inconsistent compression of the sealing layer is avoided. Therefore, the sound pickup effect of the microphone circuit board can be improved.

[0019] In some embodiments, the positioning portion is an elastic buckle, which is clamped in the positioning hole.

[0020] The positioning portion is an elastic buckle, which can be clamped with the hole wall of the positioning hole after passing through the positioning hole, so that the assembly of the microphone circuit board and the mounting support can be realized. In addition, the elastic buckle has elastic effect, which makes the elastic buckle tightly abut against the hole wall of the positioning hole, and compared with a rigid positioning column, the use of the elastic buckle can eliminate the installation gap between the elastic buckle and the hole wall of the positioning hole, so that the microphone circuit board will not move relative to the mounting support after being mounted, and thus the position accuracy of the microphone circuit board when being mounted on the mounting portion of the display device can be further improved.

[0021] In some embodiments, the elastic buckle is provided with a limiting surface, which is arranged on the side away from the support body, and the first side of the circuit board body abuts against the limiting surface.

[0022] The elastic buckle is provided with a limiting surface, and the first side of the circuit board body abuts against the limiting surface in the case that the microphone circuit board and the mounting support are assembled. Therefore, the length of the part of the protruding portion extending into the second sound pickup hole can be accurately controlled in the case that the microphone assembly is mounted on the mounting portion of the display device.

[0023] In some embodiments, the support body is provided with a connecting portion, the connecting portion is provided with a connecting hole for connecting with the mounting portion, and the connecting portion is further provided with a positioning column for cooperating with a positioning hole on the mounting portion.

[0024] The connecting manner through the connecting piece facilitates to improve the connecting strength of the support body and the mounting portion. In addition, the positioning column and the positioning hole can be used for pre-positioning during the connection of the support body and the mounting portion, thereby facilitating the connection process.

[0025] The third aspect of the present application provides a display device, comprising: a mounting portion, the mounting portion is formed with a receiving cavity, the mounting portion is provided with a second sound pickup hole for communicating the receiving cavity with the outside; and the microphone assembly in any of the above embodiments, the circuit board body is arranged in the receiving cavity, and the protruding portion is arranged to at least partially extend into the second sound pickup hole.

[0026] In the display device in the embodiments of the present application, the microphone assembly comprises a microphone circuit board and a mounting support, the main body portion of the mounting support is connected with the mounting portion of the display device, and the positioning portion of the mounting support cooperates with the positioning hole of the circuit board body, so that the microphone circuit board is mounted on the mounting portion through the mounting support. The sound pickup unit in the microphone circuit board is arranged on the first side of the circuit board body, the protruding portion is arranged on the second side of the circuit board body, the sound pickup unit is opposite to and communicates with the first sound pickup hole penetrating through the circuit board body and the protruding portion, and at least part of the protruding portion extends into the second sound pickup hole of the mounting portion of the display device. In this way, the sound from the outside can be directly received by the sound pickup unit through the first sound pickup hole, so that the sealing layer does not need to be arranged to ensure the air tightness between the sound pickup unit and the second sound pickup hole on the mounting portion, and the problem of different air tightnesses at different sound pickup holes due to inconsistent compression degrees of the sealing layer is avoided. Therefore, the sound pickup effect of the microphone circuit board can be improved.

[0027] In some embodiments, the length of the part of the protruding portion extending into the second sound pickup hole is greater than or equal to 1 / 2 of the depth of the second sound pickup hole.

[0028] In the case that the length of the part of the protruding portion extending into the second sound pickup hole is greater than or equal to 1 / 2 of the depth of the second sound pickup hole, the sound pickup effect is not affected by the sealing property between the protruding portion and the hole wall of the second sound pickup hole, that is, in the case of meeting the above condition, the problem of the sealing property between the protruding portion and the hole wall of the second sound pickup hole does not need to be considered. Therefore, the sound pickup effect can be guaranteed.

[0029] In some embodiments, the protruding portion penetrates through the second sound pickup hole; and an end of the protruding portion away from the circuit board body is flush with or protrudes from an outer surface of the mounting portion.

[0030] In this case, the sound from the outside is received by the sound pickup unit only through the first sound pickup hole and not through the second sound pickup hole, and thus the sound pickup effect is not affected by the sealing performance at all, and the sound pickup effect is improved more significantly.

[0031] In some embodiments, the display device further comprises a buffer member arranged between the circuit board body and the mounting portion.

[0032] Generally, the display device is further provided with a sound amplifying device, which generates vibration when emitting sound. If the vibration is transmitted to the microphone circuit board, the sound pickup effect of the microphone circuit board is affected. In the present embodiment, the buffer member is arranged between the circuit board body and the mounting portion, and the buffer member can absorb the vibration by deforming, so that the influence of the sound amplifying device on the microphone circuit board when emitting sound is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A structural schematic diagram of a microphone circuit board according to an embodiment of the present application is shown in FIG. 1;

[0034] Figure 2 A structural schematic diagram of a microphone circuit board according to an embodiment of the present application is shown in FIG. 1; Figure 1 An enlarged schematic diagram of part A in FIG. 1 is shown in FIG. 2;

[0035] Figure 3 A structural schematic diagram of a display device according to an embodiment of the present application is shown in FIG. 3;

[0036] Figure 4 An enlarged schematic diagram of part B in FIG. 3 is shown in FIG. 4; Figure 3 An enlarged schematic diagram of part B in FIG. 3 is shown in FIG. 4;

[0037] Figure 5 An enlarged schematic diagram of part C-C in FIG. 3 is shown in FIG. 5; Figure 4 An enlarged schematic diagram of part C-C in FIG. 3 is shown in FIG. 5;

[0038] Figure 6 An enlarged schematic diagram of part D in FIG. 3 is shown in FIG. 6; Figure 5 An enlarged schematic diagram of part D in FIG. 3 is shown in FIG. 6;

[0039] Figure 7 A structural schematic diagram of a microphone assembly according to an embodiment of the present application is shown in FIG. 7;

[0040] Figure 8 A structural schematic diagram of a microphone assembly according to an embodiment of the present application is shown in FIG. 7;

[0041] REFERENCE SIGNS:

[0042] 1. a display device;

[0043] 10, microphone assembly; 20, mounting portion; 21, second sound pickup hole; 22, accommodating cavity;

[0044] 100, microphone circuit board; 110, circuit board body; 111, first side; 112, second side; 113, positioning hole; 120, sound pickup unit; 130, protruding portion; 140, first sound pickup hole;

[0045] 200, mounting bracket; 210, bracket body; 211, connecting portion; 2111, connecting hole; 2112, positioning column; 220, positioning portion; 221, limiting surface. DETAILED DESCRIPTION

[0046] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0047] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0048] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as implying or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0049] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] As described in the background section, some display devices in the related art have a sealing layer between the microphone circuit board and the mounting portion (the inner wall of the accommodating cavity), and the microphone circuit board is pressed by a bracket attached to the mounting portion to be fixed to the inner wall of the accommodating cavity and to make the sound pickup unit correspond to the sound pickup hole. The microphone circuit board is pressed against the sealing layer after installation, and the sealing layer is used to ensure the air tightness between the sound pickup unit and the sound pickup hole, thereby ensuring the sound pickup effect.

[0051] However, the sealing layers at different sound pickup holes are prone to inconsistent compression, resulting in differences in air tightness at different sound pickup holes, thereby adversely affecting the sound pickup effect.

[0052] Based on the above, the applicant proposes the technical scheme in the embodiments of the present application. Specifically, the sound pickup unit is arranged on one side of the circuit board body, and the protruding portion is arranged on the other side. The microphone circuit board has a first sound pickup hole, and the first sound pickup hole penetrates the circuit board body and the protruding portion. The sound pickup unit is opposite to and communicates with the first sound pickup hole. When the microphone circuit board is installed in the display device, at least part of the protruding portion extends into the second sound pickup hole of the display device.

[0053] In this way, external sound can be directly received by the sound pickup unit through the first sound pickup hole. Thus, it is not necessary to ensure the air tightness between the sound pickup unit and the second sound pickup hole on the mounting portion through the sealing layer, and the problem of inconsistent air tightness at different sound pickup holes due to inconsistent compression of the sealing layer is avoided. Therefore, the sound pickup effect of the microphone circuit board can be improved.

[0054] The above is the core idea of the present application. The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the accompanying drawings of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0055] The embodiments of the first aspect of the present application provide a microphone circuit board, which comprises Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, the microphone circuit board 100 is used in the display device 1 having the mounting portion 20, wherein the mounting portion 20 is provided with the accommodating cavity 22. The microphone circuit board 100 comprises a circuit board body 110, a pickup unit 120, and a protruding portion 130. The circuit board body 110 is arranged in the accommodating cavity 22, the pickup unit 120 is arranged on a first side 111 of the circuit board body 110, the protruding portion 130 is arranged on a second side 112 of the circuit board body 110, the microphone circuit board 100 has a first pickup hole 140, the first pickup hole 140 penetrates through the circuit board body 110 and the protruding portion 130, and the pickup unit 120 is opposite to and communicates with the first pickup hole 140. The mounting portion 20 has a second pickup hole 21, the second pickup hole 21 communicates the accommodating cavity 22 with the outside, and the protruding portion 130 is configured to at least partially extend into the second pickup hole 21.

[0056] Specifically, the pickup unit 120 is opposite to and communicates with the first pickup hole 140, which can be understood as that the pickup unit 120 has an overlapping area with the first pickup hole 140 in the orthographic projection of the circuit board body 110. The side of the pickup unit 120 facing the circuit board body 110 has a mounting surface, which can be perpendicular to the axis of the first pickup hole 140.

[0057] The mounting portion 20 can be a frame, a housing, or a structural member fixedly connected with the housing of the display device 1.

[0058] It can be understood that the number of the pickup units 120 can be multiple, i.e., the microphone circuit board 100 is provided with multiple pickup units 120, correspondingly, the number of the first pickup holes 140 is also multiple, and the number of the first pickup holes 140 is consistent with the number of the pickup units 120, so that the pickup units 120 have a one-to-one corresponding relationship with the first pickup holes 140.

[0059] In the microphone circuit board 100 in the embodiments of the present application, the pickup unit 120 is arranged on the first side 111 of the circuit board body 110, the protruding portion 130 is arranged on the second side 112 of the circuit board body 110, and the pickup unit 120 is opposite to and communicates with the first pickup hole 140 penetrating through the circuit board body 110 and the protruding portion 130. When the microphone circuit board 100 is mounted on the mounting portion 20 of the display device 1, at least part of the protruding portion 130 extends into the second pickup hole 21 of the mounting portion 20 of the display device 1. In this way, the sound from the outside can be directly received by the pickup unit 120 through the first pickup hole 140, so that there is no need to set a sealing layer to ensure the air tightness between the pickup unit 120 and the second pickup hole 21 on the mounting portion 20, and the problem of different air tightnesses at different pickup holes due to inconsistent compression of the sealing layer can be avoided. Therefore, the pickup effect of the microphone circuit board 100 can be improved.

[0060] AsFigure 1 、 Figure 2 As shown in FIGS. 14 and 15, in some embodiments, the protruding portion 130 is a tubular structure, and the protruding portion 130 is connected to the circuit board body 110 by welding.

[0061] The protruding portion 130 is a tubular structure, and the hollow part of the tubular structure constitutes a part of the first sound pickup hole 140, and the opening part on the circuit board body 110 constitutes another part of the first sound pickup hole 140. The protruding portion 130 is connected to the circuit board body 110 by welding, and the hollow part of the tubular structure and the opening part on the circuit board body 110 have good air tightness by the welding connection, thereby facilitating the guarantee of the sound pickup effect.

[0062] It can be understood that the welding seam formed by welding surrounds the protruding portion 130 and forms a closure, and in addition, the welding can be in the form of full welding. In this way, the hollow part of the tubular structure and the opening part on the circuit board body 110 have good air tightness.

[0063] In one of the embodiments, the second side 112 of the circuit board body 110 is provided with a groove (not shown in the figure), and the groove is arranged around the protruding portion 130, and the groove is used to accommodate the solder used for welding.

[0064] Exemplarily, the solder can be solder paste.

[0065] The second side 112 of the circuit board body 110 is provided with a groove, and the solder can be placed in the groove during welding, and the solder can be filled in the groove after melting. The groove has two functions, on the one hand, it can position the solder, and prevent the solder in the molten state from overflowing during welding, so that the width of the welding seam formed after welding can be kept at a predetermined width. That is, it is beneficial to ensure that the welding seams between different protruding portions 130 and the circuit board body 110 have the same width. On the other hand, the groove can accommodate the molten solder, so that after welding, the welding seam will not protrude significantly from the surface of the circuit board body 110, so that the uneven phenomenon of the surface of the circuit board body 110 can be avoided, and thus the circuit board body 110 can be better fitted with the side wall of the accommodating cavity 22.

[0066] In some other embodiments, the protruding portion 130 is a tubular structure, and the protruding portion 130 is connected to the circuit board body 110 by adhesion. That is, the protruding portion 130 can also be adhered to the circuit board body 110 by curable glue (such as UV glue, heat-curable glue, etc.) to realize the connection of the protruding portion 130 and the circuit board body 110.

[0067] Further, the microphone circuit board 100 further comprises a sealing part, the sealing part surrounds the protruding part 130, and the sealing part is connected with the protruding part 130 and the circuit board body 110, and the sealing part is formed by curing of sealing glue.

[0068] Based on the condition that the protruding part 130 is connected with the circuit board body 110 in a bonding manner, the sealing part can be further arranged, the sealing part is connected with the protruding part 130 and the circuit board body 110, so as to wrap the connection position between the protruding part 130 and the circuit board body 110, so that the hollow part of the tubular structure and the opening part on the circuit board body 110 have good air tightness, thereby being beneficial to guarantee the sound pickup effect.

[0069] As shown in Figure 7 , Figure 8 , the embodiment of the second aspect of the present application provides a microphone assembly 10, the microphone assembly 10 comprises a mounting bracket 200 and the microphone circuit board 100 in any of the above embodiments. Specifically, the mounting bracket 200 comprises a bracket body 210 and a positioning part 220 connected with the bracket body 210, the bracket body 210 can be connected with the mounting part 20, the circuit board body 110 is provided with a positioning hole 113, and the positioning part 220 is matched with the positioning hole 113.

[0070] In combination with Figures 3 to 6 , the mounting bracket 200 is mainly used for mounting the microphone circuit board 100 on the mounting part 20 of the display device 1. When mounting the microphone circuit board 100 on the display device 1, the positioning part 220 of the mounting bracket 200 can be first passed through the positioning hole 113 of the circuit board body 110, so that the microphone circuit board 100 and the mounting bracket 200 are assembled as a whole. Then, the bracket body 210 of the mounting bracket 200 is connected with the mounting part 20. Thus, through the mounting and fixing effect of the mounting bracket 200, the microphone circuit board 100 is mounted on the mounting part 20 of the display device 1. In this way, after the mounting is completed, the microphone circuit board 100 can have good position precision, thereby being beneficial to guarantee the sound pickup effect.

[0071] The microphone assembly 10 in the embodiment of the present application, in the condition of being connected with the mounting part 20 of the display device 1, at least part of the protruding part 130 of the microphone circuit board 100 extends into the second sound pickup hole 21 of the mounting part 20 of the display device 1. In this way, the sound from the outside can be directly received by the sound pickup unit 120 through the first sound pickup hole 140, so that there is no need to arrange a sealing layer to guarantee the air tightness between the sound pickup unit 120 and the second sound pickup hole 21 on the mounting part 20, and the problem of different air tightness at different sound pickup holes due to inconsistent compression degree of the sealing layer will not be faced. Thus, the sound pickup effect of the microphone circuit board 100 can be improved.

[0072] As shown in Figure 5 , Figure 6 and Figure 8 , in some embodiments, the positioning part 220 is an elastic buckle, which is clamped in the positioning hole 113.

[0073] The positioning part 220 is an elastic buckle, which can be clamped with the hole wall of the positioning hole 113 after passing through the positioning hole 113, so that the assembly of the microphone circuit board 100 and the mounting bracket 200 can be realized.

[0074] In addition, since the elastic buckle has elastic effect, which makes the elastic buckle tightly abut against the hole wall of the positioning hole 113, compared with the rigid positioning column, the installation gap between the elastic buckle and the hole wall of the positioning hole 113 can be eliminated, so that the microphone circuit board 100 will not move relative to the mounting bracket 200 after installation, thereby the position accuracy of the microphone circuit board 100 when installed in the mounting part 20 of the display device 1 can be further improved.

[0075] As shown in Figure 6 , in one of the embodiments, the elastic buckle is provided with a limiting surface 221, which is arranged towards the side away from the bracket body 210, and the first side 111 of the circuit board body 110 abuts against the limiting surface 221.

[0076] The elastic buckle is provided with a limiting surface 221, and the first side 111 of the circuit board body 110 abuts against the limiting surface 221 when the microphone circuit board 100 and the mounting bracket 200 are assembled. Thus, when the microphone assembly 10 is installed in the mounting part 20 of the display device 1, the length of the part of the protruding part 130 extending into the second sound pickup hole 21 can be more accurately controlled.

[0077] As shown in Figure 7 , in some embodiments, the bracket body 210 is provided with a connecting part 211, which is provided with a connecting hole 2111 for connecting with the mounting part 20, and is further provided with a positioning column 2112 for cooperating with the positioning hole on the mounting part 20.

[0078] Exemplarily, the connecting part 211 can be a connecting arm.

[0079] It can be understood that when the connecting part 211 is provided with the connecting hole 2111, the connecting part 211 can be connected with the mounting part 20 through connecting members such as bolts, screws, etc.

[0080] The connection method using connectors helps to improve the connection strength between the bracket body 210 and the mounting part 20. In addition, during the connection process between the bracket body 210 and the mounting part 20, the positioning post 2112 and the positioning hole on the mounting part 20 can be used for pre-positioning, thereby facilitating the connection process.

[0081] In some other embodiments, the connecting part 211 can also be connected to the mounting part 20 through a snap-fit ​​structure, which makes the assembly operation simpler and helps to improve the connection efficiency between the bracket body 210 and the mounting part 20.

[0082] like Figures 3 to 6 As shown, an embodiment of the third aspect of this application provides a display device 1, which includes a mounting portion 20 and a microphone assembly 10 as described in any of the above embodiments. The mounting portion 20 has a receiving cavity 22 and a second pickup hole 21 communicating the receiving cavity 22 with the outside. A circuit board body 110 is disposed in the receiving cavity 22, and a protrusion 130 is configured to at least partially extend into the second pickup hole 21.

[0083] The display device 1 in this embodiment includes a microphone assembly 10 comprising a microphone circuit board 100 and a mounting bracket 200. The main body of the mounting bracket 200 is connected to the mounting portion 20 of the display device 1, and the positioning portion 220 of the mounting bracket 200 engages with the positioning hole 113 of the circuit board body 110, thereby allowing the microphone circuit board 100 to be mounted on the mounting portion 20 via the mounting bracket 200. The microphone circuit board 100 has a pickup unit 120 disposed on a first side 111 of the circuit board body 110, and a protrusion 130 disposed on a second side 112 of the circuit board body 110. The pickup unit 120 is opposite to and communicates with a first pickup hole 140 that penetrates the circuit board body 110 and the protrusion 130. At least a portion of the protrusion 130 extends into a second pickup hole 21 of the mounting portion 20 of the display device 1. This configuration allows external sounds to be directly received by the pickup unit 120 through the first pickup hole 140. This eliminates the need for a sealing layer to ensure airtightness between the pickup unit 120 and the second pickup hole 21 on the mounting portion 20, thus avoiding the problem of varying airtightness at different pickup holes due to inconsistent compression of the sealing layer. Consequently, the pickup performance of the microphone circuit board 100 is improved.

[0084] In some embodiments, the length of the portion of the protrusion 130 extending into the second pickup hole 21 is greater than or equal to half the depth of the second pickup hole 21.

[0085] If the length of the portion of the protruding part 130 extending into the second sound pickup hole 21 is set too short, the sound pickup effect will be affected by the sealing property between the outer wall of the protruding part 130 and the hole wall of the second sound pickup hole 21. That is, in the case where the length of the protruding part 130 extending into the second sound pickup hole 21 is too short and the sealing property between the protruding part 130 and the hole wall of the second sound pickup hole 21 is poor, the sound pickup effect will be reduced.

[0086] It is found through a large number of test experiments that, in the case where the length of the portion of the protruding part 130 extending into the second sound pickup hole 21 is greater than or equal to 1 / 2 of the depth of the second sound pickup hole 21, the sound pickup effect will not be affected by the sealing property between the protruding part 130 and the hole wall of the second sound pickup hole 21, that is, in the case where the above condition is met, the problem of the sealing property between the protruding part 130 and the hole wall of the second sound pickup hole 21 does not need to be considered. Thus, a better sound pickup effect can be ensured.

[0087] In some other embodiments, the protruding part 130 penetrates through the second sound pickup hole 21, and the end of the protruding part 130 away from the circuit board body 110 is flush with or protrudes from the outer surface of the mounting part 20.

[0088] In this case, the sound from the outside is received by the sound pickup unit 120 only through the first sound pickup hole 140 and not through the second sound pickup hole 21, and at this time, the sound pickup effect will not be affected by the sealing property at all, so the effect of improving the sound pickup effect is more significant.

[0089] In some embodiments, the display device 1 further comprises a buffer member (not shown in the figure) arranged between the circuit board body 110 and the mounting part 20.

[0090] Exemplarily, the buffer member can be a foam, a silica gel pad, etc. A plurality of buffer members can be arranged between the circuit board body 110 and the mounting part 20, the plurality of buffer members are spaced apart from each other and arranged away from the protruding part 130.

[0091] Generally, the display device 1 is further provided with a sound amplifying device (e.g., a loudspeaker assembly), and the sound amplifying device will generate vibration when emitting sound. If the vibration is conducted to the microphone circuit board 100, the sound pickup effect of the microphone circuit board 100 will be affected. In the present embodiment, the buffer member is arranged between the circuit board body 110 and the mounting part 20, and the buffer member can absorb the vibration by deforming, so that the influence of the sound amplifying device on the microphone circuit board 100 when emitting sound can be reduced.

[0092] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical scope disclosed by the present application, and all the changes or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A microphone circuit board for a display device having a mounting portion, said mounting portion having a receiving cavity, characterized in that, The microphone circuit board includes: A circuit board body, wherein the circuit board body is disposed in the receiving cavity; A pickup unit, wherein the pickup unit is disposed on a first side of the circuit board body; and A protrusion is provided on the second side of the circuit board body. The microphone circuit board has a first pickup hole, which penetrates the circuit board body and the protrusion. The pickup unit is opposite to and communicates with the first pickup hole. The mounting portion has a second pickup hole that connects the receiving cavity to the outside, and the protrusion is configured to extend at least partially into the second pickup hole.

2. The microphone circuit board according to claim 1, characterized in that, The protrusion is a tubular structure and is connected to the circuit board body by welding.

3. The microphone circuit board according to claim 2, characterized in that, The second side of the circuit board body is provided with a groove, which surrounds the protrusion and is used to accommodate solder used for soldering.

4. The microphone circuit board according to claim 1, characterized in that, The protrusion is a tubular structure and is connected to the circuit board body by adhesive bonding.

5. The microphone circuit board according to claim 4, characterized in that, The microphone circuit board also includes a sealing portion surrounding the protrusion. The sealing portion is connected to both the protrusion and the circuit board body, and is formed by curing sealant.

6. A microphone assembly, characterized in that, include: The mounting bracket includes a bracket body and a positioning part connected to the bracket body, and the bracket body can be connected to the mounting part. as well as The microphone circuit board according to any one of claims 1 to 5, wherein the circuit board body is provided with a positioning hole, and the positioning part cooperates with the positioning hole.

7. The microphone assembly according to claim 6, characterized in that, The positioning part is an elastic buckle, which is engaged with the positioning hole.

8. The microphone assembly according to claim 7, characterized in that, The elastic buckle has a limiting surface, which is positioned facing away from the main body of the bracket, and the first side of the circuit board body abuts against the limiting surface.

9. The microphone assembly according to claim 6, characterized in that, The main body of the bracket is provided with a connecting part, the connecting part is provided with a connecting hole for connecting with the mounting part, and the connecting part is also provided with a positioning post, the positioning post is used to cooperate with the positioning hole on the mounting part.

10. A display device, characterized in that, include: The mounting part has a receiving cavity and a second pickup hole that communicates the receiving cavity with the outside. as well as The microphone assembly of any one of claims 6 to 9, wherein the circuit board body is disposed in the receiving cavity, and the protrusion is configured to at least partially extend into the second pickup hole.

11. The display device according to claim 10, characterized in that, The length of the portion of the protrusion that extends into the second pickup hole is greater than or equal to 1 / 2 of the depth of the second pickup hole.

12. The display device according to claim 10, characterized in that, The protrusion penetrates the second pickup hole; The end of the protrusion away from the circuit board body is flush with or protrudes from the outer surface of the mounting portion.

13. The display device according to claim 10, characterized in that, The display device further includes a buffer component, which is disposed between the circuit board body and the mounting portion.

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