Wireless sound amplification device for display screen

Abstract

The utility model discloses a wireless sound amplifying device for a display screen, which comprises a front screen assembly, an audio receiving device, a display screen mainboard and a rear frame, the audio receiving device comprises an infrared assembly, a digital audio chip and an external interface, and the display screen mainboard and the audio receiving device are arranged on one side of the back of the front screen assembly. The external interface is connected with the display screen main board, the infrared assembly, the digital audio chip and the external interface are connected in sequence, a screen and a frame surrounding the peripheral side of the screen are arranged on one side of the front face of the front screen assembly, and a hole for containing the infrared assembly is formed in the frame; the audio receiving equipment performs code matching with an infrared component of the audio transmitting equipment outside the wireless sound amplifying device through the infrared component, and completes U-band frequency locking through the digital audio chip and the audio transmitting equipment after the code matching is successful; and the audio receiving equipment sends an audio signal to the display screen mainboard through the external interface.

Description

Technical Field

[0001] The utility model relates to the technical field of audio processing, in particular to a wireless sound amplification device for a display screen. Background Art

[0002] At present, most microphones used in classrooms, performances, squares, conference rooms, banquet halls, and environments with built-in speakers, central control, and amplifiers use single headset transmission solutions such as 2.4G solutions, infrared solutions, or UHF (Ultra High Frequency) solutions. These solutions have the following problems:

[0003] 1. The pairing of the audio receiving device and the audio transmitting device requires the separate operation of the receiving end and the transmitting device, which is complicated.

[0004] 2. In terms of frequency modulation, mutual interference between frequencies is likely to occur, resulting in cross-frequency interference between audios in the same place of use; there will be defects such as long delay, poor confidentiality, many signal interferences, average sound quality, short transmission distance and sound freezes, which will lead to poor user experience and limit the popularization and application of existing wireless audio receiving and transmitting devices.

[0005] 3. Currently, wireless audio reception on large screens requires an external wireless receiving device, which is complex for users to operate and has a low level of intelligence. Utility Model Content

[0006] In view of the above problems, the present utility model is proposed to provide a wireless sound amplification device for a display screen that overcomes the above problems or at least partially solves the above problems.

[0007] In order to solve the above problems, the utility model provides a wireless sound amplification device for a display screen, comprising: a front screen assembly, an audio receiving device, a display screen mainboard and a rear frame, wherein the front screen assembly and the rear frame are spliced ​​to form a hollow structure, the audio receiving device comprises: an infrared assembly, a digital audio chip and an external interface, the display screen mainboard and the audio receiving device are arranged on the back side of the front screen assembly, the external interface is connected to the display screen mainboard, the infrared assembly, the digital audio chip and the external interface are connected in sequence,

[0008] A screen and a frame surrounding the screen are arranged on the front side of the front screen assembly, and a hole for accommodating the infrared assembly is opened on the frame;

[0009] The audio receiving device performs code pairing with the infrared component of the audio transmitting device outside the wireless sound amplification device through the infrared component, and completes U-band frequency locking with the audio transmitting device through the digital audio chip after the code pairing is successful;

[0010] The audio receiving device sends the audio signal to the display screen mainboard through the external interface.

[0011] Optionally, the audio receiving device further comprises: an antenna and a U-segment receiving chip, wherein the antenna, the U-segment receiving chip and the digital audio chip are connected in sequence.

[0012] The U-band receiving chip receives the audio signal sent by the audio transmitting device received by the antenna by locking the U-band frequency band;

[0013] The digital audio chip processes the audio signal and sends the processed audio signal to the display screen mainboard through the external interface.

[0014] Optionally, the audio receiving device is provided with a first terminal, and the display screen mainboard is provided with a second terminal.

[0015] The first connection terminal and the second connection terminal are connected via a cable so that the audio receiving device is connected to the display screen mainboard.

[0016] Optionally, the cable includes: a power supply cable, and the display screen mainboard provides power to the audio receiving device through the power supply cable.

[0017] Optionally, the cable includes: an audio signal cable, and the audio receiving device sends an audio signal to the display screen mainboard through the audio signal cable.

[0018] Optionally, the cable includes: an infrared control cable, and the display screen mainboard controls the infrared signal emitted by the infrared component through the infrared control cable.

[0019] Optionally, the antenna is a rotating folding antenna.

[0020] Optionally, the screen of the wireless sound amplification device for display screen is any one of an LED screen, an OLED screen, and a liquid crystal screen.

[0021] Optionally, the rear frame is made of plastic.

[0022] The wireless sound amplification device for a display screen provided by the utility model comprises: a front screen assembly, an audio receiving device, a display screen mainboard and a rear frame, the front screen assembly and the rear frame are spliced ​​to form a hollow structure, the audio receiving device comprises: an infrared assembly, a digital audio chip and an external interface, the display screen mainboard and the audio receiving device are arranged on the back side of the front screen assembly, the external interface is connected to the display screen mainboard, and the infrared assembly, the digital audio chip and the external interface are connected in sequence. A screen and a frame surrounding the screen are arranged on the front side of the front screen assembly, and a hole for accommodating the infrared assembly is opened on the frame. The audio receiving device performs code matching with the infrared assembly of the audio transmitting device outside the wireless sound amplification device through the infrared assembly, and completes the U-segment frequency locking with the audio transmitting device through the digital audio chip after the code matching is successful. The audio receiving device sends the audio signal to the display screen mainboard through the external interface. The utility model arranges the audio receiving device inside the wireless sound amplification device, and combines infrared frequency pairing and U-band frequency locking. Any audio transmitting device can complete the audio signal transmission by combining short-range pairing and long-range U-band carrier transmission, avoiding the mutual interference between multiple audio transmitting devices and receiving devices in the same occasion, and avoiding the cross-frequency interference formed in the case of the same frequency. At the same time, when the audio transmitting device and the audio receiving device are in use, the audio connection only needs to be turned on and simply placed close to the infrared transmitting tube area to achieve automatic infrared pairing, and automatic U-band frequency hopping and locking are automatically completed, which is easy to use and operate.

[0023] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a wireless sound amplification device for a display screen provided by the utility model;

[0026] Figure 2 A schematic diagram of an infrared component of a wireless sound amplification device provided by the utility model;

[0027] Figure 3 A schematic diagram of the interaction between an audio transmitting device and an audio receiving device provided by the utility model;

[0028] Figure 4 The present invention is a schematic diagram of an audio transmitting device provided by the present invention. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] A wireless sound amplification device for a display screen provided by the present invention is described in detail below through specific embodiments.

[0031] Reference Figure 1 , showing a schematic structural diagram of a wireless sound amplification device for a display screen provided by the utility model.

[0032] Reference Figure 2 , showing a schematic diagram of an infrared component of a wireless sound amplification device provided by the utility model.

[0033] like Figure 1 and Figure 2 As shown, the wireless sound amplification device provided by the utility model includes: a front screen assembly 30, an audio receiving device 10, a display screen mainboard 20 and a rear frame (not shown in the figure).

[0034] Among them, the front screen assembly 30 can be spliced ​​with the rear frame to form a hollow structure, the audio receiving device 10 includes: an infrared component 12, a digital audio chip and an external interface 13, the display screen main board 20 and the audio receiving device 10 are arranged on the back side of the front screen assembly 30, the external interface 13 can be connected to the display screen main board 20, the infrared component 12, the digital audio chip and the external interface 13 are connected in sequence,

[0035] The front side of the front screen assembly 30 is provided with a screen and a frame (such as Figure 2 Said), a hole is provided on the frame to accommodate the infrared component 12.

[0036] The audio receiving device 10 can be paired with the infrared component of the audio transmitting device outside the wireless sound amplification device through the infrared component 12, and after the pairing is successful, the U-band frequency locking is completed with the audio transmitting device through the digital audio chip.

[0037] The audio receiving device 10 can send the audio signal to the display screen mainboard 20 through the external interface 13. Figure 1 As shown, a CPU (Central Processing Processor) is provided on the display screen mainboard 20, and the CPU can process the audio signal accordingly.

[0038] In actual applications, the display mainboard 20 can amplify the audio signal to a set multiple and push it to the speaker for audio playback.

[0039] In the present invention, the wireless sound amplification device may be, but is not limited to, a large screen (such as a commercial display screen, etc.) used in classrooms, performances, squares, KTVs, conference rooms, banquet halls, and other places.

[0040] The wireless sound amplification device provided by the utility model, by arranging the audio receiving device inside the wireless sound amplification device, and combining infrared frequency pairing and U-band frequency locking, any audio transmitting device can complete the audio signal transmission by combining short-range pairing and long-range U-band carrier transmission, avoiding the mutual interference between multiple audio transmitting devices and receiving devices in the same occasion, and avoiding the cross-frequency interference formed in the case of the same frequency. At the same time, when the audio transmitting device and the audio receiving device are in use, the audio connection only needs to be turned on and simply placed close to the infrared transmitting tube area to achieve automatic infrared pairing, and automatic U-band frequency hopping and locking are automatically completed, which is easy to use and operate.

[0041] In a specific implementation of the present utility model, Figure 3 As shown, the audio receiving device 10 may further include: an antenna 11 and a U-band receiving chip 14, wherein the antenna 11, the U-band receiving chip 14 and the digital audio chip 15 are connected in sequence.

[0042] The U-band receiving chip 14 can receive the audio signal sent by the audio transmitting device 40 by locking the U-band frequency band receiving antenna 11 .

[0043] The digital audio chip 15 can process the audio signal and send the processed audio signal to the display screen mainboard through the external interface 13 .

[0044] For the interaction process, it can be combined Figure 3 Describe in detail.

[0045] like Figure 3 As shown, the audio receiving device 10 may include: an antenna 11, an infrared component 12, an external interface 13, a U-band receiving chip 14 and a digital audio chip 15. The audio transmitting device 40 may include: an infrared component 41, a digital audio chip 42, a U-band transmitting chip 43 and an antenna 44.

[0046] The infrared component 12 and the infrared component 41 can be used for infrared coding.

[0047] The digital audio chip 15 and the digital audio chip 42 are both used to process audio signals.

[0048] The U-segment transmitting chip 43 is used to receive the audio signal of the digital audio chip 42 and transmit the audio signal to the outside through the U-segment transmitting chip 43 .

[0049] The U-band receiving chip 14 is used to receive external audio signals through the U-band receiving antenna 11 and send the received audio signals to the digital audio chip 15 .

[0050] After the digital audio chip 15 processes the audio signal, it sends it to the demand end (ie, the display screen mainboard) through the external interface 13 .

[0051] The code and frequency locking process of the audio transmitting device and the audio receiving device can be:

[0052] 1. Perform infrared pairing between the audio transmitter and the audio receiver, and lock them to each other after pairing is completed.

[0053] 2. The audio receiving device sends a binding signal to the locked audio transmitting device. After receiving the binding signal, the audio transmitting device randomly sends a fixed frequency point through the U-band carrier to feed back to the audio receiving device.

[0054] 3. After receiving the frequency point, the audio receiving device searches for the nearest U-segment signal in the vicinity and locks the U-segment frequency after the search is completed.

[0055] 4. After the frequency is locked, the audio transmitting device and the audio receiving device increase the transmission power, enter the normal working mode, and communicate through the U-band wireless transmission technology.

[0056] The structure of the audio transmitting device can be combined Figure 4 This is described in detail as follows.

[0057] like Figure 4 As shown, the audio transmitter device can be worn around the neck, and the neck is made of LSR liquid silicone elastic skin-friendly material to improve the wearing comfort of the user. It includes: battery 1, neck soft glue 2, microphone 3, microphone head cover 4, hose 5, indicator light 6, volume increase button 7, audio reduction button 8, power button 9, infrared window 10.

[0058] The infrared component of the audio transmitter can be accommodated in the infrared window 10 for infrared pairing. The digital audio chip, U-segment transmitter chip and antenna of the audio transmitter can be arranged in the tube of the neck soft rubber 2 to realize the processing and transmission of audio signals.

[0059] The battery 1 may be a rechargeable lithium battery. By having a built-in rechargeable lithium battery, the battery life of the audio transmitting device can be increased.

[0060] The microphone 3 can be used to output audio signals, and the microphone cover 4 can be used to improve wearing comfort when the user wears it.

[0061] The indicator light 6 can be used to indicate the switching status after the frequency locking is completed, indicating that the U segment of the receiving device and the transmitting device has been actually locked.

[0062] The volume up key 7 can be used to increase the volume, and the volume down key 8 can be used to decrease the volume. The power key 9 can be used to turn on or off the audio transmitting device.

[0063] In the above implementation process, the audio receiving device is set in the wireless sound amplification device, and the operation is simple when in use. When in use, the audio transmitting device only needs to be close to the red pairing window of the wireless sound amplification device to complete the pairing. Multi-frequency U-band communication transmission, the frequency range is 570-590MHZ, a total of 38 frequencies, and there will be no cross-frequency.

[0064] In another specific implementation of the utility model, a first connection terminal is provided on the audio receiving device, and a second connection terminal ( Figure 1 As shown in the wiring terminal 21), the first wiring terminal and the second wiring terminal can be connected by a cable to connect the audio receiving device to the display screen mainboard.

[0065] In an optional example, the cable may include a power supply cable, and the display mainboard may provide power to the audio receiving device through the power supply cable.

[0066] In another optional example, the cable may include an audio signal cable, and the audio receiving device may send an audio signal to the display screen mainboard through the audio signal cable.

[0067] In another optional example, the cable may include an infrared control cable, and the display mainboard can control the infrared signal emitted by the infrared component through the infrared control cable, such as the intensity and emission frequency of the infrared signal of the infrared component.

[0068] In another specific implementation of the present invention, the U-segment receiving antenna 11 of the audio receiving device 10 can be externally provided, can be built-in (can also be upgraded to be rotated and folded) to be compatible with more places with limited space.

[0069] In another specific implementation of the present invention, the screen of the wireless sound amplification device can be any one of LED screens, OLED screens, liquid crystal screens, and the like.

[0070] In another specific implementation of the present invention, the material of the rear frame may be plastic.

[0071] The wireless sound amplification device for a display screen provided by the utility model comprises: a front screen assembly, an audio receiving device, a display screen mainboard and a rear frame, the front screen assembly and the rear frame are spliced ​​to form a hollow structure, the audio receiving device comprises: an infrared assembly, a digital audio chip and an external interface, the display screen mainboard and the audio receiving device are arranged on the back side of the front screen assembly, the external interface is connected to the display screen mainboard, and the infrared assembly, the digital audio chip and the external interface are connected in sequence. A screen and a frame surrounding the screen are arranged on the front side of the front screen assembly, and a hole for accommodating the infrared assembly is opened on the frame. The audio receiving device performs code matching with the infrared assembly of the audio transmitting device outside the wireless sound amplification device through the infrared assembly, and completes the U-segment frequency locking with the audio transmitting device through the digital audio chip after the code matching is successful. The audio receiving device sends the audio signal to the display screen mainboard through the external interface. The utility model arranges the audio receiving device inside the wireless sound amplification device, and combines infrared frequency pairing and U-band frequency locking. Any audio transmitting device can complete the audio signal transmission by combining short-range pairing and long-range U-band carrier transmission, avoiding the mutual interference between multiple audio transmitting devices and receiving devices in the same occasion, and avoiding the cross-frequency interference formed in the case of the same frequency. At the same time, when the audio transmitting device and the audio receiving device are in use, the audio connection only needs to be turned on and simply placed close to the infrared transmitting tube area to achieve automatic infrared pairing, and automatic U-band frequency hopping and locking are automatically completed, which is easy to use and operate.

[0072] The wireless sound amplification device for a display screen provided by an embodiment of the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A wireless sound amplification device for a display screen, characterized in that: include: A front screen assembly, an audio receiving device, a display screen mainboard and a rear frame, wherein the front screen assembly and the rear frame are spliced ​​to form a hollow structure, the audio receiving device comprises: an infrared assembly, a digital audio chip and an external interface, the display screen mainboard and the audio receiving device are arranged on the back side of the front screen assembly, the external interface is connected to the display screen mainboard, the infrared assembly, the digital audio chip and the external interface are connected in sequence, A screen and a frame surrounding the screen are arranged on the front side of the front screen assembly, and a hole for accommodating the infrared assembly is opened on the frame; The audio receiving device performs code pairing with the infrared component of the audio transmitting device outside the wireless sound amplification device through the infrared component, and completes U-band frequency locking with the audio transmitting device through the digital audio chip after the code pairing is successful; The audio receiving device sends the audio signal to the display screen mainboard through the external interface.

2. The wireless sound amplification device according to claim 1, characterized in that: The audio receiving device further includes: an antenna and a U-band receiving chip, wherein the antenna, the U-band receiving chip and the digital audio chip are connected in sequence. The U-band receiving chip receives the audio signal sent by the audio transmitting device received by the antenna by locking the U-band frequency band; The digital audio chip processes the audio signal and sends the processed audio signal to the display screen mainboard through the external interface.

3. The wireless sound amplification device according to claim 1, characterized in that: The audio receiving device is provided with a first terminal, and the display screen main board is provided with a second terminal. The first connection terminal and the second connection terminal are connected via a cable so that the audio receiving device is connected to the display screen mainboard.

4. The wireless sound amplification device according to claim 3, characterized in that: The cable includes: a power supply cable, and the display screen mainboard provides power to the audio receiving device through the power supply cable.

5. The wireless sound amplification device according to claim 3, characterized in that: The cable comprises: an audio signal cable, and the audio receiving device sends an audio signal to the display screen mainboard via the audio signal cable.

6. The wireless sound amplification device according to claim 3, characterized in that: The cable comprises an infrared control cable, and the display screen mainboard controls the infrared signal emitted by the infrared component through the infrared control cable.

7. The wireless sound amplification device according to claim 2, characterized in that: The antenna is a rotating folding antenna.

8. The wireless sound amplification device according to claim 1, characterized in that: The screen of the wireless sound amplification device is any one of an LED screen, an OLED screen, and a liquid crystal screen.

9. The wireless sound amplification device according to claim 1, characterized in that: The material of the rear frame is plastic.

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