A wireless audio receiver and a wireless audio collection system

Abstract

The utility model relates to a kind of wireless audio receiver and wireless audio acquisition system, and wireless audio receiver includes receiver main body and mounting seat, receiver main body has USB plug, the mounting seat is equipped with the insertion hole compatible with the USB plug, the receiver main body is pluggably inserted in the insertion hole by the USB plug, to realize the connection of the receiver main body with the mounting seat;The bottom of the mounting seat is equipped with cold shoe, and the cold shoe is used to be inserted and fixed in the hot shoe groove of camera, to realize the connection of the mounting seat and camera.Wireless audio receiver is connected stably by mounting seat between receiver main body and camera, effectively avoid the unstable problem of signal connection caused by displacement during use, ensure smooth audio transmission, improve the acquisition effect of audio.

Description

Technical Field

[0001] This utility model relates to the field of wireless audio receiver technology. Background Technology

[0002] In today's society, video shooting and live streaming have become widespread scenarios. During the shooting process, users usually need to use a wireless microphone to capture on-site audio. This audio signal needs to be transmitted to shooting devices such as cameras and mobile phones through a wireless audio receiver. Existing wireless audio receivers are generally equipped with USB plugs. When connected to a mobile phone, they can be directly plugged into the phone's USB port, making the connection method simple. However, when used with a camera, wireless audio receivers mostly connect to the camera via cables or wireless signals. Since existing receivers do not have a mounting structure adapted to cameras, the photographer can only place them in a pocket or carry them by hand.

[0003] During filming, the wireless audio receiver in the pocket or hand will frequently shift as the filmmaker moves, causing a decrease in the stability of the wireless signal connection between it and the wireless microphone. This not only affects the transmission quality of the audio signal but also results in poor audio acquisition, making it difficult to meet the accuracy requirements of audio acquisition in video shooting and live streaming scenarios. Therefore, there is room for improvement in existing wireless audio receiving technology. Utility Model Content

[0004] The technical problem solved by this disclosure is to provide a wireless audio receiver that can be stably assembled with a camera, and a wireless audio acquisition system having the wireless audio receiver.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a wireless audio receiver includes a receiver body, the receiver body has a shell, a circuit board is installed inside the shell, a USB plug is installed on the circuit board, the USB plug protrudes from the shell, the wireless audio receiver also includes a mounting base, the mounting base has a socket adapted to the USB plug, the receiver body is pluggably inserted into the socket through the USB plug to realize the connection between the receiver body and the mounting base; the bottom of the mounting base is provided with a cold shoe plate, the cold shoe plate is used to insert and fix in the hot shoe groove of the camera to realize the connection between the mounting base and the camera.

[0006] As described above, in the wireless audio receiver, at least one side of the cold shoe plate is provided with an elastic rib, which, through elastic deformation, causes the cold shoe plate to form a tight fit with the hot shoe groove of the camera.

[0007] As described above, in the wireless audio receiver, a buffer hole is formed on the inner side of the elastic rib. The buffer hole is used to provide deformation space for the elastic rib so that the cold shoe plate can be smoothly inserted into the hot shoe groove. After being inserted into the hot shoe groove, the elastic rib elastically resets and exerts a compressive force on the side wall of the hot shoe groove.

[0008] As described above, the wireless audio receiver has a connector block inside the jack that is adapted to the USB plug, and the USB plug is inserted into the connector block.

[0009] As described above, the wireless audio receiver has a cavity inside the mounting base, and an opening at the bottom of the mounting base that communicates with the cavity. The opening is sealed by a removable lower cover, and the top of the lower cover abuts against the bottom of the connecting block to limit the position of the connecting block.

[0010] As described above, the top side of the mounting base is recessed to form a recessed area, and the socket is located on the upper side wall of the recessed area; a lateral support surface is formed at the bottom of the recessed area to support the bottom surface of the receiver body when the receiver body is inserted into the socket via a USB plug.

[0011] As described above, the wireless audio receiver's main body includes a cooperating upper shell and a lower shell, which together form a receiving cavity. A circuit board and a battery are electrically connected within the receiving cavity. The circuit board has a first indicator light and a second indicator light. The upper shell has a corresponding first light outlet and a second light outlet. A first light guide is connected between the first indicator light and the first light outlet, and a second light guide is connected between the second indicator light and the second light outlet. A button is provided on the upper shell and is electrically connected to the circuit board. A USB plug of the circuit board extends from the side of the lower shell.

[0012] As described above, the wireless audio receiver also has a pin connected to one end of the circuit board, and the other end of the pin is located inside the lower housing. The pin is used to connect with the contacts on the charger to charge the battery.

[0013] As described above, the wireless audio receiver has magnets on both sides of the pin. The magnets are used to position and align with the magnetic components in the charger to ensure that the pin accurately connects with the contacts on the charger.

[0014] A wireless audio acquisition system includes a wireless microphone and a camera with a hot shoe, and further includes a wireless audio receiver as described in any of the preceding claims; the wireless microphone and the wireless audio receiver establish a communication connection via a wireless signal, and the wireless audio receiver is fixed to the hot shoe of the camera via the mounting bracket.

[0015] The beneficial effects of this disclosure are as follows: The wireless audio receiver achieves a stable connection between the receiver body and the camera through the mounting base, effectively avoiding signal instability caused by displacement during use, ensuring smooth audio transmission, and improving the audio acquisition effect; The receiver body is assembled by inserting a USB plug into the mounting base, which can effectively protect the USB plug, and it does not require the addition of additional structures to the receiver body. The overall structure has strong versatility, effectively saves costs, and significantly optimizes the user experience. Attached Figure Description

[0016] Some specific embodiments of the present invention will now be described in detail by way of example and not limitation, with reference to the accompanying drawings, in which the same reference numerals designate the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0017] In the attached image:

[0018] Figure 1 This is a first schematic diagram of the wireless audio receiver of this utility model;

[0019] Figure 2 This is a second schematic diagram of the wireless audio receiver of this utility model;

[0020] Figure 3 This is a first schematic diagram of the mounting base in the wireless audio receiver of this utility model;

[0021] Figure 4 This is a second schematic diagram of the mounting base in the wireless audio receiver of this utility model;

[0022] Figure 5 This is an exploded view of the mounting base in the wireless audio receiver of this utility model;

[0023] Figure 6 This is a first schematic diagram of the receiver body in the wireless audio receiver of this utility model;

[0024] Figure 7 This is a second schematic diagram of the receiver body in the wireless audio receiver of this utility model;

[0025] Figure 8 This is a schematic diagram of the exploded main body of the wireless audio receiver of this utility model;

[0026] Figure 9 This is a cross-sectional schematic diagram of the wireless audio receiver of this utility model;

[0027] The markings in the image are explained as follows:

[0028] 1. Mounting base; 100. Cold shoe plate; 101. Insertion hole; 102. Recessed area; 103. Lateral support surface; 104. Elastic rib; 105. Buffer hole; 106. Lower cover; 107. Connecting block;

[0029] 2. Receiver main body; 200. Outer shell; 201. USB plug; 202. Circuit board; 203. Upper shell; 204. Lower shell; 205. Battery; 206. First indicator light; 207. Second indicator light; 208. First light outlet; 209. Second light outlet; 210. First light guide; 211. Second light guide; 212. Button; 213. Pin; 214. Magnet. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0031] Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by those skilled in the art to which this utility model pertains.

[0032] The terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a,” “one,” or “the” do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including” or “contains” mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. The terms “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0033] See appendix Figure 1-9 The image shows a wireless audio receiver, including a receiver body 2. The receiver body 2 has a housing 200. A circuit board 202 is installed inside the housing 200. A USB plug is installed on the circuit board 202 and protrudes from the housing 200.

[0034] The wireless audio receiver also includes a mounting base 1, which has a socket 101 adapted to the USB plug. The receiver body 2 is pluggably inserted into the socket 101 through the USB plug to connect the receiver body 2 to the mounting base 1. The bottom of the mounting base 1 is provided with a cold shoe plate 100, which is used to insert and fix into the hot shoe groove of the camera to connect the mounting base 1 to the camera.

[0035] The receiver body 2 has a housing 200, which encloses a cavity to form a receiving cavity. A circuit board 202 is fixed inside the receiving cavity. A USB plug 201 is installed on the circuit board 202. A clearance hole is provided at a corresponding position on the housing 200. The plug section of the USB plug 201 passes through the clearance hole and protrudes from the housing 200 to realize signal transmission and connection.

[0036] The mounting base 1 has a socket 101 adapted to the USB plug 201. The receiver body 2 is plugged into the socket 101 via its USB plug 201, thus connecting to the mounting base 1. The bottom of the mounting base 1 has a cold shoe plate 100, the structure of which is adapted to the standard hot shoe of the camera, allowing it to be directly inserted into the hot shoe of the camera, thus mechanically fixing the mounting base 1 to the camera. A support portion is formed on the outer side of the mounting base 1. When the USB plug 201 of the receiver body 2 is fully inserted into the socket 101, the bottom surface of the receiver body 2 fits against the support portion, enhancing the stability of the connection between the receiver body 2 and the mounting base 1 through the supporting effect of the support portion.

[0037] When used with a camera, insert the cold shoe plate 100 of the mounting base 1 into the hot shoe slot of the camera for fixation, and then insert the USB plug 201 of the receiver body 2 into the socket 101 of the mounting base 1. This allows for a stable connection between the receiver body 2 and the camera, preventing frequent displacement of the receiver body 2 during use. When used with a mobile phone, simply insert the USB plug 201 of the receiver body 2 into the USB socket 101 of the mobile phone. The operation is simple.

[0038] Elastic ribs 104 are symmetrically arranged on both sides of the cold shoe plate 100. When the cold shoe plate 100 is inserted into the hot shoe groove of the camera, the elastic ribs 104 on both sides contact and are compressed against the inner walls of the hot shoe groove, generating elastic deformation. This elastic deformation causes the elastic ribs 104 to fit tightly against the inner wall of the hot shoe groove, forming a tight fit structure, thereby significantly enhancing the connection between the mounting base 1 and the camera, and preventing the mounting base 1 from loosening or shifting due to vibration or slight collision during shooting. In use, simply align the cold shoe plate 100 with the hot shoe groove of the camera and insert it directly. The elastic ribs 104 adapt to the inner wall size of the hot shoe groove through their own elasticity, achieving a stable fixation without additional operation. When disassembling, apply appropriate pulling force to pull it out, balancing firmness and ease of operation.

[0039] Furthermore, a buffer hole 105 is formed on the inner side of the elastic rib 104. The buffer hole 105 is used to provide deformation space for the elastic rib 104 so that the cold shoe plate 100 can be smoothly inserted into the hot shoe groove. After being inserted into the hot shoe groove, the elastic rib 104 elastically resets and exerts a compressive force on the side wall of the hot shoe groove to improve the connection firmness.

[0040] In this embodiment, buffer holes 105 are provided on the inner side of the elastic ribs 104 on both sides of the cold shoe plate 100. The buffer holes 105 are elongated holes extending along the length of the elastic ribs 104 and penetrating the thickness direction of the elastic ribs 104, so as to reserve sufficient space for the deformation of the elastic ribs 104.

[0041] When the cold shoe plate 100 is inserted into the camera's hot shoe slot, the outer wall of the elastic rib 104 contacts and is compressed against the inner wall of the hot shoe slot. At this time, the presence of the buffer hole 105 allows the elastic rib 104 to deform flexibly inward, effectively reducing insertion resistance and ensuring the cold shoe plate 100 is smoothly installed. Afterward, the compressed and deformed elastic rib 104 returns to its original position under its own elasticity. The buffer hole 105 does not restrict its rebound, and the elastic rib 104 exerts a continuous compressive force on the side wall of the hot shoe slot, further enhancing the connection between the mounting base 1 and the camera and preventing loosening due to movement or collision during shooting. During disassembly, applying a pulling force will cause the elastic rib 104 to deform again towards the buffer hole 105, allowing the cold shoe plate 100 to be easily pulled out.

[0042] In some embodiments, the socket 101 is provided with a connecting block 107 adapted to the USB plug 201, and the USB plug 201 is inserted into the connecting block 107 to enhance the connection stability between the two.

[0043] The socket 101 is located on the upper side wall of the mounting base 1, and a connecting block 107 is fixedly embedded inside it. The connecting block 107 has a slot at its axial position that perfectly matches the shape of a USB plug (such as USB Type-C), and the depth of the slot is adapted to the insertion length of the USB plug.

[0044] When the USB plug of the receiver body 2 is inserted into the socket 101, it will be simultaneously inserted into the slot of the connecting block 107, effectively avoiding the loosening problem that may occur if the inner wall of the socket 101 is used alone; at the same time, the connecting block 107 plays a radial limiting role for the USB plug, reducing the shaking during the insertion and removal process, significantly enhancing the connection stability between the receiver body 2 and the mounting base 1, and the insertion and removal process remains convenient.

[0045] In some embodiments, the mounting base 1 has a cavity, and the bottom of the mounting base 1 has an opening that communicates with the cavity. The opening is sealed by a lower cover 106, and the top of the lower cover 106 abuts against the bottom of the connecting block 107 to limit the position of the connecting block 107.

[0046] Mounting base 1 is a hollow shell structure with an integrally formed cavity inside. The upper part of the side wall (near the top wall) has a socket 101 adapted to the USB plug. The socket 101 penetrates the side wall of mounting base 1 and communicates with the inside of the cavity. It is only used for the mechanical insertion of the USB plug and does not involve signal transmission or power conduction.

[0047] The shape of the connecting block 107 is adapted to the internal dimensions of the cavity. During installation, it is inserted into the cavity from the open end at the bottom of the mounting base 1, so that the top surface of the connecting block 107 is in close contact with the top wall of the cavity. A slot matching the shape of the USB plug is opened at the axial position of the connecting block 107. The position of the slot is precisely aligned with the socket 101 on the upper side wall of the mounting base 1, ensuring that the USB plug of the receiver body 2 can pass through the socket 101 and be smoothly inserted into the slot of the connecting block 107, achieving a stable mechanical fit.

[0048] The bottom of the mounting base 1 has an opening that communicates with the cavity. The lower cover 106 is connected to the opening of the mounting base 1 by means of snap-fit ​​or tight fitting, thereby sealing the bottom of the cavity. A positioning post extends from the middle of the lower cover 106. After the lower cover 106 is fixed to the opening, the top surface of the positioning post abuts tightly against the bottom of the connecting block 107. Combined with the abutment between the top surface of the connecting block 107 and the top wall of the cavity, this forms a bidirectional axial limit on the connecting block 107, preventing the connecting block 107 from shifting or shaking inside the cavity. This ensures that the slot of the connecting block 107 is always precisely aligned with the insertion hole 101 on the side wall of the mounting base 1, thereby ensuring a stable mechanical connection between the receiver body 2 and the mounting base 1 via the USB plug and the connecting block 107.

[0049] In some embodiments, a support portion is formed on the outer side of the mounting base 1. When the USB plug is inserted into the socket 101, the bottom surface of the receiver body 2 is supported by the support portion to enhance the stability of the connection between the receiver body 2 and the mounting base 1. Specifically, one side of the top of the mounting base 1 is recessed downward to form a recessed area 102, and the socket 101 is disposed on the upper part of the side wall of the recessed area 102; the support portion is a transverse support surface 103 formed at the bottom of the recessed area 102.

[0050] In this embodiment, the top side of the mounting base 1 has a recessed area 102 that is recessed downwards. The support part is a transverse support surface 103 integrally formed at the bottom of the recessed area 102, which is generally horizontally positioned. When the USB plug of the receiver body 2 passes through the insertion hole 101 on the upper side wall of the recessed area 102 and forms a mechanical engagement with the connecting block 107 in the cavity, the bottom surface of the receiver body 2 is tightly fitted with the transverse support surface 103 at the bottom of the recessed area 102. The support surface distributes the weight of the receiver body 2, preventing the USB plug from loosening or deforming due to force alone, and further enhancing the mechanical connection stability between the receiver body 2 and the mounting base 1.

[0051] In some embodiments, the receiver body 2's outer shell 200 includes a cooperating upper shell 203 and a lower shell 204, which together form a receiving cavity. A circuit board 202 and a battery 205 are electrically connected within the receiving cavity. The circuit board 202 has a first indicator light 206 and a second indicator light 207. The upper shell 203 has a corresponding first light outlet 208 and a second light outlet 209. A first light guide 210 connects the first indicator light 206 to the first light outlet 208, and a second light guide 211 connects the second indicator light 207 to the second light outlet 209. A button 212 is provided on the upper shell 203 and is electrically connected to the circuit board 202. A USB plug 201 of the circuit board 202 extends from the side of the lower shell 204.

[0052] The outer shell 200 of the receiver body 2 is composed of an upper shell 203 and a lower shell 204 that cooperate with each other. Both the upper shell 203 and the lower shell 204 can be injection molded from ABS engineering plastic. After the edges of the two are pre-positioned by a snap-fit ​​structure, they are then locked and fixed by screws to form a sealed accommodating cavity, which plays a role in dust protection.

[0053] A circuit board 202 and a lithium battery 205 are fixed inside the accommodating cavity. The battery 205 is electrically connected to the power interface on the circuit board 202 via wires to provide power to the device. A first indicator light 206 and a second indicator light 207 (which can be surface-mount LEDs) are soldered onto the circuit board 202. Correspondingly, a first light outlet 208 and a second light outlet 209 are provided on the top surface of the upper shell 203. A transparent PC material light-transmitting cover is embedded in the light outlet. A first light guide 210 is snapped between the first indicator light 206 and the first light outlet 208, and a second light guide 211 is snapped between the second indicator light 207 and the second light outlet 209. The light guides can be made of transparent silicone and have a columnar structure. Their two ends are tightly attached to the light-emitting surface of the indicator light and the light-transmitting cover, respectively, to ensure that the light can be accurately transmitted to the light outlet for easy observation by the user.

[0054] The top surface of the upper shell 203 is also fitted with a button 212. The button 212 corresponds to the button 212 contact on the circuit board 202. When the button 212 is pressed, the contact is triggered to realize the circuit opening and closing. The button 212 and the circuit board 202 are electrically connected through this mechanical triggering method for device switch control or function switching.

[0055] The USB plug is soldered and fixed on the circuit board 202. Its plug end extends out from the clearance hole opened in the side wall of the lower shell 204. The diameter of the clearance hole is adapted to the outer diameter of the USB plug, which not only ensures that the USB plug extends smoothly, but also reduces wear during the plugging and unplugging process.

[0056] In some embodiments, one end of a pin 213 is also connected to the circuit board 202, and the other end of the pin 213 is located inside the lower housing 204. The pin 213 is used to connect with the contacts on the charger to charge the battery 205.

[0057] Two pins 213 are soldered and fixed on the circuit board 202 of the receiver body 2. The pins 213 are electrically connected to the charging circuit on the circuit board 202, thereby forming a power supply circuit with the battery 205 in the accommodating cavity through the charging circuit. The lower shell 204 has two matching slots corresponding to the position of the pins 213. The end of the pin 213 away from the circuit board 202 is inserted into the slot and fixed.

[0058] When it is necessary to charge the battery 205, align the receiver body 2 with the charging area of ​​the adapter charger, so that the pin 213 in the lower shell 204 is precisely connected with the corresponding contact on the charger. Then, through the conductive contact between the pin 213 and the contact, electrical energy can be transmitted to the battery 205 through the charging circuit on the circuit board 202 to realize the charging function. There is no need to plug or unplug cables, making the operation convenient and the connection reliable.

[0059] In some embodiments, magnets 214 are provided on both sides of the pin 213. The magnets 214 are used to achieve positioning and alignment with the magnetic components in the charger, so as to ensure that the pin 213 is accurately connected to the contacts on the charger.

[0060] Inside the lower shell 204 of the receiver body 2, a magnet 214 is provided on each side of the two pins 213. The two magnets 214 are symmetrically distributed on the left and right sides of the pins 213, maintaining an equidistant distance from the pins 213. During charging, the charging area of ​​the charger is equipped with a magnetic attraction component, such as an iron sheet or a magnet with opposite polarity 214, that is compatible with the magnet 214. When brought close together, the magnets 214 on both sides of the pins 213 generate an attraction force with the magnetic attraction component of the charger. Under the action of the magnetic force, the receiver body 2 is guided to automatically position and align, quickly correcting positional deviations and ensuring that the pins 213 inside the lower shell 204 are accurately aligned with the corresponding contacts on the charger. This avoids poor contact caused by manual misalignment, improving the convenience of charging operation and the reliability of connection.

[0061] A wireless audio acquisition system is provided, comprising a wireless microphone and a camera with a hot shoe, and a wireless audio receiver as described in any of the preceding claims; the wireless microphone and the wireless audio receiver establish a communication connection via a wireless signal, and the wireless audio receiver is fixed to the hot shoe of the camera via the mounting bracket.

[0062] Once the wireless microphone and wireless audio receiver are activated, a stable wireless communication connection is established via Bluetooth. The ambient audio signal captured by the wireless microphone can be transmitted to the wireless audio receiver in real time. The wireless audio receiver is fixed to the camera via a mounting bracket. The cold shoe plate at the bottom of the mounting bracket is aligned with the hot shoe of the camera and inserted to securely mount the bracket to the camera, thereby forming an integrated connection structure between the wireless audio receiver and the camera.

[0063] When in use, the audio signal collected by the wireless microphone is wirelessly transmitted to the receiver, and then synchronized with the video shooting of the camera to achieve synchronous audio and video recording. The overall structure is compact and the connection is reliable, which can effectively prevent the receiver from shifting and affecting the audio acquisition.

[0064] This wireless audio receiver, by setting a mounting base 1 with a cold shoe plate 100 adapted to the camera's hot shoe slot, allows the receiver body 2 to be fixed to the camera. This reduces the frequent movement of the wireless audio receiver during shooting, ensures a stable signal connection between it and the wireless microphone, and improves the audio acquisition effect. Furthermore, the receiver body 2 is assembled by inserting a USB plug into the mounting base 1, which effectively protects the USB plug and eliminates the need for additional assembly structures on the receiver body 2. Its simple structure effectively saves production costs.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A wireless audio receiver, comprising a receiver body having a housing, a circuit board mounted inside the housing, a USB plug mounted on the circuit board, the USB plug protruding from the housing, characterized in that: The wireless audio receiver also includes a mounting base with a socket adapted to the USB plug. The receiver body is pluggably inserted into the socket via the USB plug to connect the receiver body to the mounting base. The bottom of the mounting base is provided with a cold shoe plate, which is inserted into and fixed in the hot shoe slot of the camera to connect the mounting base to the camera.

2. The wireless audio receiver as described in claim 1, characterized in that: At least one side of the cold shoe plate is provided with an elastic rib, which, through elastic deformation, makes the cold shoe plate fit tightly with the hot shoe groove of the camera.

3. The wireless audio receiver as described in claim 2, characterized in that: The inner side of the elastic rib has a buffer hole, which provides deformation space for the elastic rib so that the cold shoe plate can be smoothly inserted into the hot shoe groove. After being inserted into the hot shoe groove, the elastic rib elastically resets and exerts a compressive force on the side wall of the hot shoe groove.

4. The wireless audio receiver as described in claim 1, characterized in that: The socket is provided with a connecting block adapted to the USB plug, and the USB plug is inserted into the connecting block.

5. The wireless audio receiver as described in claim 4, characterized in that: The mounting base has a cavity, and the bottom of the mounting base has an opening that communicates with the cavity. The opening is sealed by a removable lower cover, and the top of the lower cover abuts against the bottom of the connecting block to limit the position of the connecting block.

6. The wireless audio receiver as described in claim 5, characterized in that: The top side of the mounting base is recessed to form a recessed area, and the insertion hole is located on the upper part of the side wall of the recessed area; A lateral support surface is formed at the bottom of the recessed area to support the bottom surface of the receiver body when the receiver body is inserted into the socket via the USB plug.

7. The wireless audio receiver as described in claim 1, characterized in that: The receiver body's outer shell includes an upper shell and a lower shell that cooperate with each other. The upper shell and the lower shell enclose a cavity, and a circuit board and a battery that are electrically connected to each other are provided inside the cavity. The circuit board is provided with a first indicator light and a second indicator light, and the upper shell is provided with a first light outlet and a second light outlet. A first light guide is connected between the first indicator light and the first light outlet, and a second light guide is connected between the second indicator light and the second light outlet. The upper shell is provided with a button, which is electrically connected to the circuit board; The USB plug of the circuit board extends from the side of the lower housing.

8. The wireless audio receiver as described in claim 7, characterized in that: The circuit board is also connected to one end of a pin, and the other end of the pin is located inside the lower housing. The pin is used to connect with the contacts on the charger to charge the battery.

9. The wireless audio receiver as described in claim 8, characterized in that: Magnets are provided on both sides of the pin, and the magnets are used to position and align with the magnetic components in the charger to ensure that the pin accurately connects with the contacts on the charger.

10. A wireless audio acquisition system, comprising a wireless microphone and a camera with a hot shoe, characterized in that: It also includes the wireless audio receiver as described in any one of claims 1-9; The wireless microphone and the wireless audio receiver establish a communication connection via a wireless signal, and the wireless audio receiver is fixed to the hot shoe of the camera via the mounting bracket.

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