CN113645545A

CN113645545A - External sound card

Info

Publication number: CN113645545A
Application number: CN202110750421.6A
Authority: CN
Inventors: 梁小江; 贺鑫; 苏攀
Original assignee: Jiangxi Chuangcheng Microelectronics Co ltd
Current assignee: Jiangxi Chuangcheng Microelectronics Co ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2021-11-12
Anticipated expiration: 2041-07-01
Also published as: CN113645545B

Abstract

The invention provides an external sound card, battery; the power supply circuit board is provided with a power supply management unit and is electrically connected with the battery; the sound card circuit board is provided with a sound processing unit and is electrically connected with the power supply circuit board; the charging interface is arranged between the power circuit board and the sound card circuit board and is electrically connected with the power circuit board; the data transmission interface is arranged between the power circuit board and the sound card circuit board and is electrically connected with the power circuit board; the data transmission interface comprises a power terminal and a data terminal, wherein the power terminal is electrically connected with the power circuit board so as to facilitate the charging of external electronic equipment; the data terminal is electrically connected with the sound card circuit board so as to carry out audio data interaction. The external sound card provided by the invention can be used for live broadcasting and charging external electronic equipment at the same time, and has rich functions.

Description

External sound card

Technical Field

The invention relates to the field of audio signal processing, in particular to an external sound card.

Background

As live activities become more popular and more popular with people, people's expectations and needs for live programs also become higher.

In the prior art, a sound device for assisting electronic equipment such as a mobile phone, a tablet computer and the like to perform live broadcasting exists; the sound devices can process audio signals corresponding to the sound to obtain sound effects meeting the expectation of users, for example, the sound input by a microphone can be subjected to sound effect processing and then is spread to audiences through a mobile phone, and meanwhile, certain sound effect can be added to the sound subjected to sound effect processing to improve entertainment; however, when a user plays the audio program through the existing audio device, the situation that the electronic device runs out of power and cannot play the audio program is often caused.

Disclosure of Invention

In view of the above-mentioned situation, a primary object of the present invention is to provide an external sound card capable of charging an external electronic device while live broadcasting.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: an external sound card comprising: a battery; the power supply circuit board is provided with a power supply management unit and is electrically connected with the battery; the sound card circuit board is provided with a sound processing unit and is electrically connected with the power supply circuit board; the charging interface is arranged between the power circuit board and the sound card circuit board and is electrically connected with the power circuit board; the data transmission interface is arranged between the power circuit board and the sound card circuit board; the data transmission interface comprises a power terminal and a data terminal, wherein the power terminal is electrically connected with the power circuit board so that the power management unit can charge external electronic equipment connected to the data transmission interface through the power terminal; the data terminal is electrically connected with the sound card circuit board so that the sound processing unit can perform audio data interaction with external electronic equipment accessed on the data transmission interface through the data terminal.

Preferably, the power supply management unit includes a power supply path circuit, a charging path circuit and a discharging path circuit, and the charging interface connects the power supply terminal and the sound card circuit board via the power supply path circuit; the charging interface is connected with the battery through the charging path circuit; the battery is connected with the charging interface, the power supply terminal and the sound card circuit board through the discharging path circuit.

Preferably, the external sound card further comprises a power supply output control end for controlling the sound card circuit board to be opened or closed, when the power supply output control end receives a first control signal, the power supply management unit controls the sound card circuit board to be opened according to the first control signal, and the charging device connected to the charging interface supplies power to the sound card circuit board, the battery and the external electronic device connected to the data transmission interface, or the battery supplies power to the sound card circuit board, the charging interface and the electronic device connected to the data transmission interface; and when the power supply output control end receives a second control signal, the second control signal controls the sound card circuit board to be closed.

Preferably, the power circuit board further includes a power supply output end connected to the discharge path circuit and the power supply path circuit, and the power terminal of the data transmission interface and the data transmission interface are connected to the power supply output end to obtain electric energy in a normal charging mode.

Preferably, a sub-discharge path circuit is arranged between the battery and the charging interface, and the battery can provide quick charging or ordinary charging for external electronic equipment connected to the charging interface.

Preferably, a patch cord is connected to the data transmission interface, one end of the patch cord is connected to the data transmission interface, and the other end of the patch cord is a lighting male connector and a type-c male connector for electrically connecting with external electronic equipment; the power supply circuit board is provided with a USB detection circuit, and the USB detection circuit is used for detecting the access of the type-c interface type electronic equipment on the transfer line; the sound card circuit board is provided with a DSP chip and an LAM module, the LAM module is connected to the DSP chip, and the LAM module is at least used for detecting the access of lighting interface type electronic equipment on the transfer line.

Preferably, a first connector and a second connector are respectively arranged on the side faces of the data transmission interface opposite to the power circuit board, and the data transmission interface is electrically connected with the power circuit board through the first connector and the second connector; the sound card circuit board comprises a DSP chip and an LAM module, the DSP chip is connected with the LAM module, and the data terminal carries out audio data interaction through the first connector, the second connector, the LAM module and the DSP chip; the power supply circuit board supplies power to the DSP chip through the first connector and the second connector.

Preferably, the external sound card comprises a plurality of audio interfaces electrically connected with the sound card circuit board; the charging interface, the data transmission interface, the plurality of audio interfaces, the battery, the sound card circuit board and the power supply circuit board are accommodated in the accommodating space; the sound card circuit board is fixed on the rear shell and covers the opening, and the charging interface, the data transmission interface, the battery and the power supply circuit board are limited between the sound card circuit board and the rear shell; the rear shell is internally provided with a first partition plate and a second partition plate, the first partition plate and the second partition plate divide the interior of the rear shell into a first space, a second space and a third space along the plane extension direction of the first partition plate and the second partition plate, the second space is positioned between the first space and the third space, the power circuit board is accommodated in the first space, the battery is accommodated in the second space, and the plurality of audio interfaces are accommodated in the third space.

Preferably, the external sound card comprises a front shell and a rear shell, the rear shell and the front shell are connected to form an accommodating space, and the charging interface, the data transmission interface, the plurality of audio interfaces, the battery, the sound card circuit board and the power supply circuit board are accommodated in the accommodating space; the light-transmitting cover plate is also included; the front shell is provided with a first area and a second area, the first area is provided with a containing groove, the light-transmitting cover plate is contained in the containing groove, and the light-transmitting cover plate is fixedly connected with the front shell through a pasting structure and/or a clamping structure; the outer surface of the light-transmitting cover plate is in smooth transition with the second area; the area ratio of the first region to the second region is (0.3-1.7): 1.

preferably, a light hole is formed in the first area of the front shell, and a light-emitting element is arranged at the position of the sound card circuit board corresponding to the light hole; the external sound card further comprises a light homogenizing sheet and a light transmitting piece, wherein the light homogenizing sheet is arranged in the light transmitting hole and/or the accommodating groove; the light-transmitting piece is arranged on the surface, provided with the light-emitting elements, of the sound card circuit board, and comprises a plurality of light-blocking strips, the adjacent light-emitting elements are separated by the light-blocking strips, and light emitted by the light-emitting elements is emitted from the space between the adjacent light-blocking strips.

The external sound card provided by the invention is internally provided with a battery, the data transmission interface is provided with a data terminal and a power terminal, the power terminal can obtain electric energy from the battery through the power circuit board and can also obtain electric energy from external rechargeable equipment on the charging interface through the power circuit board, and meanwhile, audio data interaction can be carried out between the data terminal and the sound card circuit board, namely the external sound card can carry out live broadcast and charging while supporting electronic equipment, the functions are rich, the practicability is good, and the problem that the live broadcast and the like can not be continued due to insufficient electric quantity of the electronic equipment under the conditions of outdoor live broadcast and the like can be avoided. The circuit in the external sound card is distributed on the power circuit board and the sound card circuit board, the two circuit boards are relatively independent, and the data transmission interface and the charging interface are positioned between the two circuit boards, so that the signal interference of an electric signal generated by the power circuit board in the working process on an audio signal processed on the sound card circuit board can be avoided, the charging and audio data transmission paths are short, the product structure is compact, the product volume is reduced, and the portability is improved.

Other advantages of the present invention will be described in the detailed description, and those skilled in the art will understand the technical features and technical solutions presented in the description.

Drawings

A preferred embodiment of an external sound card according to the present invention will be described with reference to the accompanying drawings. In the figure:

fig. 1 and fig. 2 are schematic perspective views of an external sound card at different viewing angles according to an embodiment of the present invention;

FIG. 3 is an exploded view of an external sound card according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a front case of an external sound card according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a rear housing of an external sound card according to an embodiment of the present invention;

FIG. 6 is an exploded view of a portion of an external sound card according to an embodiment of the present invention;

FIG. 7 is a schematic view of an installation structure of an audio interface of an external sound card according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a fixing member according to an embodiment of the present invention;

FIG. 9 is a schematic view of a structure of an external sound card according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a circuit module of an external sound card according to an embodiment of the present invention;

fig. 11 is a schematic terminal configuration diagram of a data transmission interface according to an embodiment of the present invention.

Reference numerals:

10. an external sound card; 12. a major surface; 12a, a display area; 12b, a non-display area; 1201. a first key; 1202. a second key; 121. a first end face; 122. a second end face; 123. a first side surface; 1231. a third key; 124. a second side surface; 1241. a fourth key; 11. a front housing; 11a, a first region; 110. accommodating grooves; 111. a first light-transmitting hole; 112. a second light-transmitting hole; 113. a third light-transmitting hole; 114. mounting holes; 115. a key hole; 13. a rear housing; 130. an opening; 134. a first separator; 135. a second separator; 131. a first space; 132. a second space; 133. a third space; 136. a bayonet; 137. a positioning bar; 14. a light-transmitting cover plate; 141. an adhesive layer; 15. a battery; 160. a buffer member; 16. an insulating layer; 17. a power supply circuit board; 18. a sound card circuit board; 181. a DSP chip; 180. an audio signal processing circuit; 182. a LAM module; 183. an LED; 184. pressing a key; 193. a charging interface; 194. a data transmission interface; 195. an audio interface; 196. a button; 20. a fixing member; 201. a cross bar; 202. a connecting strip; 203. a stationary ring; 204a, a first light homogenizing sheet; 204b, a second light homogenizing sheet; 205. a light transmissive member; 51. a power supply input terminal; 52. a power supply output terminal; 53. a battery charging terminal; 54. a battery discharge end; 55. a power supply path circuit; 56. a charge path circuit; 57. a discharge path circuit; 58. a power supply output control terminal; 59. and (6) control keys.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in order to avoid obscuring the nature of the present invention, well-known methods, procedures, and components have not been described in detail.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1 and fig. 2, an embodiment of the present invention provides an external sound card 10, where the external sound card 10 is connected to a microphone and an electronic device (e.g., a mobile phone, a tablet computer, etc.) and is used for live webcasting or karaoke. For example, in the case of live webcasting, a voice signal input from a microphone by a user is processed by the external sound card 10 and then transmitted to the electronic device, and the electronic device can transmit the processed audio signal to a live webcasting audience.

The external sound card 10 includes a main surface 12, a first end surface 121 (i.e., a top surface in a view of fig. 2), a second end surface 122 (i.e., a bottom surface in a view of fig. 1), and a first side surface 123 and a second side surface 124, the first end surface 121 and the second end surface 122 being disposed opposite to each other, and the first side surface 123 and the second side surface 124 being disposed opposite to each other.

The main surface 12 includes a display area 12a and a non-display area 12b, where the display area 12a may display a LOGO, a bluetooth identifier, an electric quantity identifier, a working mode of the external sound card 10, and the like, and it can be understood that the display content of the display area 12a is not limited, and it may set different display contents according to the requirement of the user.

The non-display area 12b is provided with a first key 1201 and a second key 1202, the first key 1201 is circular, the second key 1202 is annular, and the second key 1202 is disposed around the first key 1201 and concentric with the first key 1201. The first button 1201 is a power key, the second button 1202 corresponds to different control functions respectively in the up, down, left and right directions (it is understood that the directional words mentioned in the present invention refer to relative positions in a designated view, not absolute positions, and after the drawing is rotated 180 ° in the plane of the drawing, the position word "up" should be changed to position word "down"), and the second button 1202 corresponds to a field control special effect button in the embodiment of the present invention, and corresponds to four different additional sound effects of "clapping", "clandedly", "laughing" and "laughing" respectively in the up, down, left and right directions, and when pressed, the voice signal input by the user is attached with the additional sound effect of "clapping" or "clandedly" or "laughing".

The first interface group is exposed on the first end surface 121 and includes a charging interface 193 and a data transmission interface 194, the charging interface 193 and the data transmission interface 194 are arranged side by side and are located on the same straight line, and as an embodiment, the charging interface 193 and the data transmission interface 194 are a type-c female socket or a USB female socket or a lighting female socket or a Micro USB interface. The second end surface 122 is provided with a second interface set, as an embodiment, the second interface set includes a plurality of audio interfaces 195, in the present invention, five audio interfaces 195 are provided, as an embodiment, the five audio interfaces 195 are respectively two microphone interfaces (5V or 48V), a headset interface, an accompaniment interface and an analog live broadcast interface. Microphone interface can connect the microphone that supplies the user input sound, and the headset interface is used for inserting headset or earphone in order to live or monitor etc. accompanies the input that the interface can connect electronic equipment to accompany audio signal, and the live interface of simulation can be used for the live broadcast of simulation. As another embodiment, the five audio interfaces 195 are a monitoring interface, a microphone interface, an accompaniment interface, a first direct broadcasting interface and a second direct broadcasting interface, wherein a headset or an earphone is inserted into the monitoring interface to perform direct broadcasting and monitoring, the microphone interface can be connected to a microphone for a user to input sound, the accompaniment interface can be connected to the electronic device to perform input of accompaniment audio signals, and the first direct broadcasting interface and the second direct broadcasting interface can be connected to the electronic device to perform direct broadcasting. In the present invention, the five audio interfaces 195 are all 3.5mm audio interfaces 195.

The first side 123 is provided with two third keys 1231, the two third keys 1231 function as a microphone volume key and a bluetooth key, the second side 124 is provided with two fourth keys 1241, the two fourth keys 1241 function as a monitoring volume key and a scene key, the microphone volume connected to the microphone interface and the monitoring interface can be adjusted through the microphone volume key and the monitoring volume key, the bluetooth key can control the start and stop of the bluetooth function, the scene key can control the working mode corresponding to the application scene, such as "chat", "K song", "live broadcast" or "custom" mode, and the display area 12a displays the working mode of the external sound card 10 after the corresponding mode is selected through the keys.

It is understood that the number of the interfaces can be adjusted as required, and the location is not limited, and the interfaces can be disposed at a suitable location of the external sound card 10. The functions, the number and the positions of the keys are not limited, and the functions, the positions and the number of the keys can be adjusted according to requirements.

Referring to fig. 4, the external sound card 10 includes a housing, specifically, the housing includes a front shell 11 and a rear shell 13, and the front shell 11 and the rear shell 13 form a receiving space for receiving a part of components of the external sound card 10 by connection (e.g., fastening, bonding).

Referring to fig. 1, fig. 3 and fig. 4, the front shell 11 includes a first region 11a and a second region (i.e., non-display region) corresponding to the display region 12a and the non-display region 12b, respectively, the first region 11a is provided with a receiving groove 110, the external sound card 10 further includes a transparent cover plate 14, the transparent cover plate 14 is received in the receiving groove 110, and the transparent cover plate 14 is fixedly connected to the front shell 11 through a pasting structure and/or a clamping structure, the pasting structure in the invention is an adhesive layer 141, and the surface of the transparent cover plate 14 close to the rear shell 13 is pasted in the receiving groove 110 through the adhesive layer 141. The clamping structure can be a clamping groove and a protrusion which are matched with each other, for example, the edge of the light-transmitting cover plate 14 is provided with a protrusion a, the edge of the groove is provided with a clamping groove b, and the protrusion a slides into the clamping groove b to form clamping. After the light-transmitting cover plate 14 is fixed, the outer surface of the light-transmitting cover plate 14 is in smooth transition with the non-display area 12b, the appearance of a product is optimized, the user experience is optimized, the light-transmitting cover plate 14 is provided with the accommodating groove 110 through the front shell 11, the display area 12a can be made of the local part of the front shell 11, the whole main surface is not required to be made into the display area like the existing product, the product cost can be greatly reduced, the assembly difficulty is reduced, when the light-transmitting cover plate 14 is damaged, the maintenance and the replacement are easy, the reduction of the display area 12a is also beneficial to improving the anti-falling performance of the product.

Referring to fig. 1, 3 to 5, the front housing 11 has a plurality of light holes (i.e., a plurality of light holes are formed in the bottom of the accommodating groove 110) in the first region 11a, and the front housing includes a plurality of first light holes 111, a single second light hole 112 and a plurality of third light holes 113, wherein the first light holes 111, the second light holes 112 and the third light holes 113 penetrate through the front housing 11. A plurality of first light trap 111 are used for supplementary bluetooth sign and the demonstration of electric quantity sign. The second light-transmitting hole 112 is used to assist the display of the LOGO of the product, and the plurality of third light-transmitting holes 113 is used to assist the display of the operation mode. The front shell 11 is provided with mounting holes 114, and screws can pass through the mounting holes 114 to fix the front shell 11 to the rear shell 13. A key hole 115 is formed in a second region of the front case 11, and the key hole 115 is used for the first key 1201 and the second key 1202 to pass through and be exposed on the main surface 12. The area ratio of the first region 11a to the second region is (0.3-1.7): 1, more preferably (0.25 to 0.5): 1.

the second light hole 112 has a relatively large size, and a first light homogenizing plate 204a is arranged in the second light hole, and the first light homogenizing plate 204a can be a PC plate. The second light homogenizing sheet 204b is arranged in the accommodating groove 110 corresponding to the second light transmitting hole 112, the second light homogenizing sheet 204b can be astigmatic paper, and the astigmatic paper can be fixed at the bottom of the accommodating groove 110 through the adhesive layer 141, so that the characteristics of convenience in installation, low cost and good light homogenizing effect can be achieved.

Referring to fig. 5, a first partition 134 and a second partition 135 are disposed inside the rear case 13, and the inside of the rear case 13 is divided into a first space 131, a second space 132 and a third space 133 along the plane extending direction of the first partition 134 and the second partition 135, the second space 132 is located between the first space 131 and the third space 133, the first space 131 is located at the end where the first end surface 121 is located, and the third space 133 is located at the end where the second end surface 122 is located. Preferably, the external sound card 10 has a rectangular parallelepiped shape, and the ratio of the first space 131 to the third space 133 in the height direction (Z direction) is 1: (0.8-1.2), under this parameter, second space 132 can be set up in the middle, is favorable to the equilibrium of the whole weight of product, improves the anti-falling performance of product.

Referring to fig. 6, the external sound card 10 further includes a battery 15, a sound card circuit board 18, a power circuit board 17, a first connector and a second connector (not shown) located in an accommodating space formed by connecting the front shell 11 and the rear shell 13, the power circuit board 17 for controlling charging and discharging of the battery 15 is disposed on one side of the sound card circuit board 18, and the power circuit board 17 and the battery 15 are substantially parallel to the sound card circuit board 18, which can be understood as being substantially parallel, i.e. an included angle (acute angle) between the two is less than or equal to 10 °, and preferably less than 2 °. The side face of the sound card circuit board 18 opposite to the power supply circuit board 17 is provided with a first connector and a second connector, and the sound card circuit board 18 and the power supply circuit board 17 are electrically conducted through the first connector and the second connector. As an embodiment, the first connector and the second connector may be a pin header and a female header which are matched with each other, and the pin header and the female header are plugged to realize electrical connection.

In the mounted state, the power circuit board 17 is located in the first space 131, the battery 15 is located in the second space 132, and the plurality of audio interfaces 195 are located in the third space 133. A buffer layer (not shown) is disposed between the battery 15 and the side wall of the rear case 13, and the buffer layer may be made of a silica gel strip or EVA. The distance between the battery 15 and the side wall of the rear case 13 is greater than 1.5mm, and more preferably greater than or equal to 2 mm. An anti-collision strip (such as a silicone strip, not shown) is disposed between the battery 15 and the first and

second separators

134 and 135 to tightly fix the battery 15 in the second space 132, and the surface of the battery 15 away from the sound card circuit board 18 and the rear case 13 are fixed by foam adhesive. Buffer layer, crashproof strip and bubble celloidin all can effectively make protection battery 15, not only can prevent that other devices from leading to battery 15 fish tail electrolyte to reveal, but also do benefit to improving the preventing of product and falling the performance.

Referring to fig. 3 and fig. 6, a light emitting element is disposed on the sound card circuit board 18 at a position corresponding to the light hole, in this embodiment, the light emitting element is specifically an LED183, and light emitted by the LED183 passes through the first light hole 111, the second light hole 112, or the third light hole 113, so that the display area 12a can display a corresponding pattern. Specifically, the surface of the transparent cover plate 14 close to the sound card circuit board 18 is provided with a pattern layer, the pattern layer defines a transparent area and a shielding area, the transmittance of light in the transparent area is high, and the transmittance of light in the shielding area is extremely low, so that by setting the transparent area and the shielding area, when the LED183 emits light, the light penetrates through the transparent hole, the transparent area and the transparent cover plate 14, and the set pattern can be displayed. Because the display area 12a corresponding to the first light hole 111 is used for displaying the electric quantity and the bluetooth identifier, the display control accuracy requirement of the display is high, and in order to improve the display effect, the LED183 corresponding to the first light hole 111 is provided with the light transmissive member 205, the light transmissive member 205 is of a mesh structure, that is, the light transmissive member 205 includes a plurality of light-blocking stripes, adjacent light-emitting elements are separated by the light-blocking stripes, and light emitted by the light-emitting elements passes through a space between the adjacent light-blocking stripes and then is emitted.

Referring to fig. 1 and fig. 6, the sound card circuit board 18 is further provided with a pressing key 184, the pressing key 184 is arranged corresponding to the first key 1201, the second key 1202, the third key 1231 and the fourth key 1241, and when the user presses the corresponding key, the pressing key 184 sends a corresponding operation instruction to the sound card circuit board 18.

Referring to fig. 5, the rear case 13 has an opening 130, the internal space of the rear case 13 is communicated with the outside through the opening 130, the sound card circuit board 18 is fixed to the rear case 13 by screwing and/or clipping and covers the opening 130, and the charging interface, the data transmission interface 194, the battery 15, the power circuit board 17, the first connector and the second connector are limited between the sound card circuit board 18 and the rear case 13.

The flexible insulating layer 16 and/or the buffer member 160, such as highland barley paper and/or foam cotton layer, are arranged between the sound card circuit board 18 and the battery 15, in the invention, the foam cotton layer and the highland barley paper are arranged between the sound card circuit board 18 and the battery 15, the foam cotton layer is positioned between the highland barley paper and the sound card circuit board 18, and the flexible insulating layer 16, such as the highland barley paper, can play a role of heat insulation, prevent the heat generated by the work of the battery 15 from causing adverse effects on the sound card circuit board 18, and also prevent the sound card circuit board 18 from being directly contacted with the battery 15 to cause damage.

Referring to fig. 7 to 9, the plurality of audio interfaces 195 in the third space 133 are arranged in a straight line, the plurality of audio interfaces 195 are electrically connected to the sound card circuit board 18, in order to better fix the plurality of audio interfaces 195, the external sound card 10 further includes a fixing member 20, the fixing member 20 includes a cross bar 201, a plurality of connecting bars 202, and a plurality of fixing rings 203, each fixing ring 203 is connected to the cross bar 201 through the connecting bar 202, preferably, each fixing ring 203 is connected to the cross bar 201 through two connecting bars 202, and all the connecting bars 202 are arranged in parallel. The number of the fixing rings 203 is the same as that of the through holes formed in the second end surface 122 of the rear shell 13, and the fixing rings 203 are clamped in the through holes formed in the rear shell 13 along the axial direction of the fixing rings 203; the rear shell 13 is provided with a limiting structure, the limiting structure limits the movement of the fixing member 20 in a first direction and a second direction, and the first direction, the second direction and the axis direction of the fixing ring 203 are mutually perpendicular. As an embodiment, the limiting structure includes a bayonet 136 and a positioning bar 137, a cross bar 201 is clamped in the bayonet 136 along a first direction, adjacent connecting bars 202 for connecting different fixing rings 203 are matched with the clamping positioning bar 137, the clamping direction is a second direction, and the fixing member 20 realizes limiting in three different directions through the through hole, the bayonet 136 and the positioning bar 137.

Referring to fig. 10, as an embodiment, the power circuit board of the present invention is provided with a power management unit and a power input terminal 51, a power output terminal 52, a battery charging terminal 53 and a battery discharging terminal 54, wherein the power management unit includes a power supply path circuit 55 disposed between the power input terminal 51 and the power output terminal 52, a charging path circuit 56 disposed between the power input terminal 51 and the battery charging terminal 53, and a discharging path circuit 57 disposed between the battery discharging terminal 54 and the power output terminal 52. The battery charging end 53 and the battery discharging end 54 are connected with the battery 15, the power input end 51 is connected with the charging interface 193, and the power output end 52 is connected with the power supply pins of the sound card circuit board 18 and the data transmission interface 194. It is understood that the electrical connection between the power supply output 52 and the sound card circuit board 18 is achieved through the first connector and the second connector.

When the charging interface 193 is connected with a charger or other charging equipment, if it is detected that the sound card circuit board 18 or the electronic equipment connected with the data transmission interface 194 needs to supply power, the power management unit controls the power supply path circuit 55 to be opened, the discharge path circuit 57 to be closed, the voltage input by the charging interface 193 is input to the sound card circuit board 18 and/or the electronic equipment connected with the data transmission interface 194 through the power supply path circuit 55, in addition, when it is detected that the battery 15 is in a non-full state, the power management unit can also control the charging path circuit 56 to be opened to charge the battery 15, when the charging interface 193 is not connected with the charger or other charging equipment (i.e. no power input), if it is detected that the sound card circuit board 18 or the electronic equipment connected with the data transmission interface 194 needs to supply power, the power management unit controls the discharge path circuit 57 to be opened, the voltage output by the battery 15 is input to the sound card circuit board 18 and/or the electronic device connected to the data transmission interface 194 through the discharge path circuit 57.

When the external sound card 10 provided by the embodiment of the present invention is connected to a charger or other charging devices, the connected charger or other charging devices can directly supply power to the sound card circuit board 18 and/or the electronic device connected to the data transmission interface 194, and the internal battery 15 is not used for supplying power, so that energy consumption is reduced, and heat generation is reduced. And when the electronic equipment is directly broadcast outdoors, a user does not need to worry that the electronic equipment cannot be live broadcast without power.

As an embodiment, the power management unit may further include a discharge path circuit (referred to as a sub-discharge path circuit for distinguishing from the foregoing discharge path circuit) disposed between the battery discharge terminal 54 and the power input terminal 51, that is, the external sound card 10 may further supply power to the electronic device through the charging interface 193.

As an embodiment, the external sound card 10 further includes a control key 59, the power circuit board 17 further includes a power output control terminal 58, the control key 59 is connected to the power output control terminal 58 to implement the on and off control of the sound card circuit board 18, for example, when the sound card circuit board 18 is in the off state (the power output terminal 52 is in the output off state), the user may perform a first operation, such as pressing the control key 59 for a long time, the power management unit determines the access state of the charging interface 193 after the power output control terminal 58 detects a corresponding control signal (the first control signal), if a charger or other charging equipment is currently accessed, the power supply path circuit 55 is controlled to be turned on, and 5V standard voltage (a normal charging mode) is output at the power output terminal 52, so as to turn on the sound card circuit board 18 and supply power to the power supply pin of the data transmission interface 194, if no charger or other charging equipment is accessed, the discharge path circuit 57 is controlled to be turned on to output the 5V standard voltage at the power supply output terminal 52 by using the battery 15, thereby turning on the sound card circuit board 18 and supplying power to the power supply pin of the data transmission interface 194. On the contrary, when the sound card circuit board 18 is in the on state, the user may perform a second operation, such as pressing the control key 59 again for a long time, and the power management unit turns off the currently-turned-on power supply path circuit 55 or discharge path circuit 57 after detecting the corresponding control signal (second control signal), thereby turning off the sound card circuit board 18.

As an embodiment, the power circuit board 17 is further provided with a USB detection circuit, the USB detection circuit is used to detect the access of the type-c interface type electronic device on the data transmission interface 194, and the detection of the access of the type-c interface type electronic device by using the USB detection circuit belongs to the prior art.

As an embodiment, the power management unit further has a charging protocol identification terminal connected to the charging interface 193, and the power management unit can identify the device connected to the charging interface 193, and if it identifies that the connected external device is a charger or other charging device, the charging path circuit 56 and/or the power supply path circuit 55 are/is controlled to be turned on, at this time, the charging interface 193 is used as the power input interface of the external sound card 10, and if it is recognized that the accessed external device is an electronic device or other charged device, the discharge path circuit provided between the battery discharge terminal 54 and the power input terminal 51 is controlled to be turned on, and at this time, the charging interface 193 serves as a power output interface of the external sound card 10, and preferably, the power circuit board has a quick charging function, the charging interface 193 can receive a fast charge from or perform a fast charge on an external device.

The power management unit in the embodiment of the invention can adopt the existing power management unit. For example, by an IP5358 chip and adapted peripheral circuitry.

As an example, the power circuit board 17 may have a plurality of power supply output terminals, wherein the data transmission interface 194 and the sound card circuit board 18 may be connected to different power supply output terminals, i.e., different power supply output terminals are respectively used for power supply, preferably, in the present invention, the power supply pins of the sound card circuit board 18 and the data transmission interface 194 are connected to the same power supply output terminal 52 of the power circuit board 17, namely the data transmission interface 194 and the sound card circuit board 18 are powered by the same power supply output 52 of the power management unit, thus, the power management unit can control the output of one power supply output terminal 52 to supply power to the data transmission interface 194 and the sound card circuit board 18 simultaneously, when the data transmission interface 194 is connected to an electronic device (a mobile phone, a tablet computer, etc.), audio interaction between the electronic device and the sound card circuit board 18 can be realized, and power supply to the mobile electronic device can also be realized. The situation that live broadcasting cannot be continued due to power failure of an electronic product in audio interaction is avoided. The power supply pins of the sound card circuit board 18 and the data transmission interface 194 are connected to the same power supply output terminal 52 of the power circuit board 17 to obtain electric energy, and the charging interface 193 is connected to a different power supply output terminal (the power supply output terminal may be additionally provided or the power supply input terminal 51 also serves as a power supply output terminal), so that the differentiated design of the power supply voltage is facilitated, and meanwhile, the stability of audio interaction is guaranteed. For example, the power management unit can provide fast charge or ordinary charge for the external electronic device connected to the charging interface 193, that is, the power management unit can separately provide fast charge voltage for the charging interface 193 without affecting the power supply voltage of the sound card circuit board 18 and the data transmission interface 194, and when the electronic device connected to the charging interface is fast charged, the damage to the sound card circuit board 18 (provided with a sound processing unit on the sound card circuit board, which has limited withstand voltage) and the data transmission interface 194 caused by a large voltage is avoided.

The charging interface 193 and the data transmission interface 194 are disposed on the same surface of the power circuit board 17 and between the power circuit board 17 and the sound card circuit board 18, and the data transmission interface 194 includes a power terminal and a data terminal, and the power terminal is connected to the power supply output terminal 52, so that the power management unit can charge the external electronic device connected to the data transmission interface 194 via the power terminal. The data terminal is connected to the first connector and electrically connected to the sound card circuit board 18 through the second connector connected to the first connector, so that the sound processing unit can perform audio data interaction with the external electronic device connected to the data transmission interface 194 through the data terminal.

The sound card circuit board 18 is provided with a sound processing unit and an LAM module, the sound processing unit at least comprises a microprocessor, the microprocessor is a DSP chip in the invention, the DSP chip can process audio data to obtain audio data corresponding to a sound effect desired by a user, the DSP chip is electrically connected with the LAM module, the power supply output end 52 is connected to the DSP chip through a first connector and a second connector, a data terminal in the data transmission interface 194 is connected to the LAM module through the first connector and the second connector, and electronic equipment connected to the data transmission interface 194 performs audio data interaction with the DSP chip through the LAM module. It can be understood that the data terminal may be directly connected to the first connector through a wire, and then connected to the LAM module through the second connector, where the wire may be disposed on the power circuit board 17 or may be a wire independent of the power circuit board 17. The LAM module may also be used to detect the access of the lighting interface type electronic device on the data transmission interface 194, and the access of the lighting interface type electronic device detected by the LAM module belongs to the prior art.

As a specific example, the charging interface 193 and the data transmission interface 194 are type-c female sockets.

It is understood that the charging interface 193 is a type-c female socket, and the type-c female socket can adopt the existing type-c female socket technology. The charging interface 193 is used for charging and discharging, that is, when the charging interface 193 is connected with a charging device such as a charger, the charging device charges and supplies power to the external sound card 10 through the charging interface 193, and when the electronic device is connected to the charging interface 193, the external sound card 10 charges the electronic device.

It can be understood that the electronic device connected to the data transmission interface 194 can obtain power from the external sound card 10 and perform live broadcasting at the same time. The interface type of the electronic equipment can be a type-c interface and can also be a lighting interface. For the electronic equipment that realizes that data transmission interface 194 connects two kinds of different interfaces, can set up the patch cord in addition, if set up the patch cord that one drags two, one drags two one end of patch cord for the public head with the interface 193 matching that charges, the other end is the double-end: lighting male and type-c male.

Referring to fig. 11, as an embodiment, the data transmission interface 194 is a type-c interface, and includes a plurality of standard connection pins, where the plurality of standard connection pins include a first part pin and a second part pin, and are respectively used for audio data interaction with an external electronic device of type-c interface type and an external electronic device of lighting interface type.

The first part pins are arranged according to the Type of the Type-C interface, wherein the CC1 pin, the CC2 pin, the GND pin and the VBUS pin in the first part pins are connected to the power circuit board 17; the DP pin and the DM pin in the first part of pins are connected to the DSP chip via the power supply circuit board 17 and the connector.

In the second part of pins, a TX 2-pin and a TX 1-pin are correspondingly matched with a LAM _ D-pin in a lighting interface type, and an RX 2-pin and an RX 1-pin are correspondingly matched with a digital LAM _ GND in the lighting interface type; the RX2+ pin and the RX1+ pin are correspondingly matched with an LAM _ DW pin in the lighting interface type; the TX1+ pin and the TX2+ pin are correspondingly matched with an LAM _ D + pin in the lighting interface type; the SBU2 and SBU1 pins are correspondingly matched with the LAM _ PWR pin in the lighting interface type.

In one embodiment, the power terminals of the first portion of pins and the second portion of pins are connected to the same terminal of the power circuit board. The ground in the lighting interface type is matched to the ground in the data transfer interface 194.

As an embodiment, the data transmission interface 194 includes a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the first resistor and the second resistor are connected in series between a power source terminal (VBUS) and a ground terminal, and a USB D + terminal in the lighting interface type is matched between a series point of the first resistor and the second resistor; the third resistor and the fourth resistor are connected in series between a power supply terminal (VBUS) and a ground terminal, and the USB D + terminal in the second data line interface type is matched between series points of the third resistor and the fourth resistor.

It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.

It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.

Claims

1. An external sound card, comprising:

a battery;

the power supply circuit board is provided with a power supply management unit and is electrically connected with the battery;

the sound card circuit board is provided with a sound processing unit and is electrically connected with the power supply circuit board;

the charging interface is arranged between the power circuit board and the sound card circuit board and is electrically connected with the power circuit board;

the data transmission interface is arranged between the power circuit board and the sound card circuit board;

the data transmission interface comprises a power terminal and a data terminal, wherein the power terminal is electrically connected with the power circuit board so that the power management unit can charge external electronic equipment connected to the data transmission interface through the power terminal; the data terminal is electrically connected with the sound card circuit board so that the sound processing unit can perform audio data interaction with external electronic equipment accessed on the data transmission interface through the data terminal.

2. The external sound card of claim 1, wherein the power management unit comprises a power path circuit, a charging path circuit and a discharging path circuit, the charging interface connects the power terminal and the sound card circuit board via the power path circuit; the charging interface is connected with the battery through the charging path circuit; the battery is connected with the charging interface, the power supply terminal and the sound card circuit board through the discharging path circuit.

3. The external sound card of claim 2, further comprising a power output control terminal for controlling the sound card circuit board to be turned on or turned off, wherein when the power output control terminal receives a first control signal, the power management unit controls the sound card circuit board to be turned on according to the first control signal, and the charging device connected to the charging interface supplies power to the sound card circuit board, the battery and the external electronic device connected to the data transmission interface, or the battery supplies power to the sound card circuit board, the charging interface and the electronic device connected to the data transmission interface; and when the power supply output control end receives a second control signal, the second control signal controls the sound card circuit board to be closed.

4. The external sound card of claim 2, wherein the power circuit board further comprises a power output connected to the discharge path circuit and the power path circuit, and the power terminal of the data transmission interface and the data transmission interface are connected to the power output to obtain power in a normal charging mode.

5. The external sound card according to claim 4, wherein a secondary discharge path circuit is disposed between the battery and the charging interface, and the battery can provide fast charging or normal charging for an external electronic device connected to the charging interface.

6. The external sound card according to claim 1, wherein a patch cord is connected to the data transmission interface, one end of the patch cord is connected to the data transmission interface, and the other end of the patch cord is a lighting male connector and a type-c male connector for electrically connecting to an external electronic device; the power supply circuit board is provided with a USB detection circuit, and the USB detection circuit is used for detecting the access of the type-c interface type electronic equipment on the transfer line; the sound card circuit board is provided with a DSP chip and an LAM module, the LAM module is connected to the DSP chip, and the LAM module is at least used for detecting the access of lighting interface type electronic equipment on the transfer line.

7. The external sound card of claim 1, wherein a first connector and a second connector are respectively disposed on the side surfaces of the data transmission interface opposite to the power circuit board, and the data transmission interface and the power circuit board are electrically connected through the first connector and the second connector; the sound card circuit board comprises a DSP chip and an LAM module, the DSP chip is connected with the LAM module, and the data terminal carries out audio data interaction through the first connector, the second connector, the LAM module and the DSP chip; the power supply circuit board supplies power to the DSP chip through the first connector and the second connector.

8. The external sound card of claim 1, wherein the external sound card comprises a plurality of audio interfaces electrically connected to the sound card circuit board; the charging interface, the data transmission interface, the plurality of audio interfaces, the battery, the sound card circuit board and the power supply circuit board are accommodated in the accommodating space; the sound card circuit board is fixed on the rear shell and covers the opening, and the charging interface, the data transmission interface, the battery and the power supply circuit board are limited between the sound card circuit board and the rear shell;

the rear shell is internally provided with a first partition plate and a second partition plate, the first partition plate and the second partition plate divide the interior of the rear shell into a first space, a second space and a third space along the plane extension direction of the first partition plate and the second partition plate, the second space is positioned between the first space and the third space, the power circuit board is accommodated in the first space, the battery is accommodated in the second space, and the plurality of audio interfaces are accommodated in the third space.

9. The external sound card of claim 1, wherein the external sound card comprises a front shell and a rear shell, the rear shell and the front shell are connected to form an accommodating space, and the charging interface, the data transmission interface, the plurality of audio interfaces, the battery, the sound card circuit board and the power supply circuit board are accommodated in the accommodating space; the light-transmitting cover plate is also included; the front shell is provided with a first area and a second area, the first area is provided with a containing groove, the light-transmitting cover plate is contained in the containing groove, and the light-transmitting cover plate is fixedly connected with the front shell through a pasting structure and/or a clamping structure; the outer surface of the light-transmitting cover plate is in smooth transition with the second area;

the area ratio of the first region to the second region is (0.3-1.7): 1.

10. the external sound card of claim 9, wherein the first region of the front shell is provided with a light hole, and a light emitting element is disposed at a position of the sound card circuit board corresponding to the light hole; the external sound card further comprises a light homogenizing sheet and a light transmitting piece, wherein the light homogenizing sheet is arranged in the light transmitting hole and/or the accommodating groove; the light-transmitting piece is arranged on the surface, provided with the light-emitting elements, of the sound card circuit board, and comprises a plurality of light-blocking strips, the adjacent light-emitting elements are separated by the light-blocking strips, and light emitted by the light-emitting elements is emitted from the space between the adjacent light-blocking strips.