A high sound pressure level, small-volume megaphone

Abstract

This utility model relates to the field of radio communication equipment manufacturing and discloses a high sound pressure level, small-volume megaphone, including a main body. A control panel is fixedly connected to the rear end of the main body. Recording, playback, stop, up / down, and first microphone jacks are located on the exterior of the control panel. This utility model uses the control panel as the central control unit, centrally arranging buttons and interfaces to achieve multiple functions such as speaking, recording, playback of recorded audio, USB audio playback, and multi-device parallel operation. Simultaneously, the top of the main body features a handle, groove, and buckle for portability, balancing rich functionality with a compact size, effectively solving the problem of existing megaphones being bulky and inconvenient despite their comprehensive functions.

Description

Technical Field

[0001] This utility model relates to the field of radio communication equipment manufacturing, and in particular to a high sound pressure level, small-volume megaphone. Background Technology

[0002] The megaphone is mainly used for long-distance voice transmission, command issuance and emergency warning. It is widely used in public safety, emergency rescue, industrial construction, drone operation and other industries. Its core function is to achieve high sound pressure level voice amplification and transmission in a small form, so as to ensure efficient information transmission in noisy or open environments. Currently, these megaphones on the market are mainly composed of an acoustic drive unit, a power amplifier module, a high-efficiency power supply unit, and a lightweight shell. Some smart megaphones have Bluetooth, Wi-Fi modules and voice recognition components. They mainly achieve high sound pressure level output of over 110dB and clear sound transmission over long distances by optimizing acoustic algorithms, strengthening the magnetic circuit with neodymium magnets, and using modular and compact design to control the size of the device. Currently available megaphones on the market suffer from limited functionality, making them unsuitable for various usage scenarios. Meanwhile, fully functional megaphones tend to be bulky and inconvenient to carry. Furthermore, the wiring harness plugged into the megaphone is prone to tangling and knotting during frequent use. Therefore, a high sound pressure level, compact megaphone is proposed to address these issues. Summary of the Invention

[0003] To overcome the above shortcomings, this utility model provides a high sound pressure level, small-volume megaphone, which aims to improve the problem of megaphones having limited functionality and applicability.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a high sound pressure level, small-volume megaphone, comprising a main body, a control panel fixedly connected to the rear end of the main body, a recording button, a playback button, a stop button, a track skipping button, a track skipping button, a first microphone jack, a second microphone jack, a charging port, a power button, a display screen, a playback button, a USB button, a parallel input button, and a parallel output button. Cable management components are fixedly connected to both sides of the main body.

[0005] As a further description of the above technical solution: The cable management assembly includes a box body, which is fixedly connected to the outer wall of the main body. A backing plate is slidably connected inside the box body. A spring is fixedly connected to one side of the backing plate, and a support column is fixedly connected to the other side of the backing plate. A clamp is fixedly connected to the end of the support column away from the backing plate, and a sliding opening is provided on the outer wall of the clamp.

[0006] As a further description of the above technical solution: The front end of the main body has multiple sound-emitting slots.

[0007] As a further description of the above technical solution: Both ends of the top of the main body are fixedly connected with buckles, and the top of the main body is fixedly connected with a fixing block.

[0008] As a further description of the above technical solution: The top of the main body is rotatably connected to a handle, and the top of the main body has a groove.

[0009] As a further description of the above technical solution: The end of the spring away from the abutment is fixedly connected to the inner wall of the box, and the abutment abuts against the inner wall of the box.

[0010] As a further description of the above technical solution: The two adjacent clamps are symmetrically distributed.

[0011] As a further description of the above technical solution: The bottom of the main body is fixedly connected with four base pads.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the control panel serves as the central operation control center, centrally arranging buttons and interfaces. It enables multiple functions such as public address, recording, playback of recorded audio, USB audio playback, and multi-device parallel operation. Simultaneously, the top of the main body features a handle, groove, and buckle for portability, balancing rich functionality with a compact size. The handle and buckle are suitable for individual soldier mobile scenarios, facilitating easy carrying. This effectively solves the problems of existing megaphones having limited applicability due to limited functionality, and those with more comprehensive functions being too bulky and inconvenient to carry. It is suitable for various scenarios such as public safety, emergency rescue, and outdoor operations.

[0013] 2. In this utility model, a cable management component is used to clamp the cable, and the cable can be inserted and fixed through the sliding slot of the clamp. During operation, the elastic clamping structure of the cable management component can organize and fix various cable bundles connecting microphones, chargers, external audio sources, etc., avoiding the tangling and knotting of cable bundles during use, improving the convenience of equipment operation and the cleanliness of the use environment, and further optimizing the practical performance of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a high sound pressure level, small volume megaphone proposed in this utility model; Figure 2 This is a schematic diagram of the handle of a high sound pressure level, small volume megaphone proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the sound-emitting groove of a high sound pressure level, small volume megaphone proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the fixture for a high sound pressure level, small volume megaphone proposed in this utility model.

[0015] Legend: 1. Main body; 2. Control panel; 3. Record button; 4. Playback button; 5. Stop button; 6. Previous track button; 7. Next track button; 8. First microphone jack; 9. Second microphone jack; 10. Charging port; 11. Power button; 12. Display screen; 13. Playback button; 14. USB button; 15. Parallel input button; 16. Parallel output button; 17. Box body; 18. Backing plate; 19. Spring; 20. Support column; 21. Clamp; 22. Slide; 23. Playback slot; 24. Handle; 25. Groove; 26. Buckle; 27. Fixing block; 28. Base pad. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figures 1-3This utility model provides an embodiment of a high sound pressure level, small-volume megaphone, comprising a body 1, which integrates various functional components. A control panel 2 is fixedly connected to the rear end of the body 1. The control panel 2 serves as the operation control center of the device, centrally arranging buttons and interfaces. A recording button 3 is located on the outside of the control panel 2, used to trigger the device's recording function and record the microphone input voice signal. A playback button 4 is located on the outside of the control panel 2, used to start the device's recording playback function and play the recorded voice content. A stop button 5 is located on the outside of the control panel 2, which can interrupt the ongoing recording process. An up track button 6 is located on the outside of the control panel 2, used to switch up the audio file currently playing on a USB storage device. A down track button 7 is located on the outside of the control panel 2, used to switch down the audio file currently playing on a USB storage device. A first microphone jack 8 is located on the outside of the control panel 2, used to connect a handheld dynamic microphone for voice input. A second microphone jack 9 is located on the outside of the control panel 2, which can serve as an additional microphone connection interface. To meet the needs of multiple microphones, the control panel 2 has an external charging port 10 for connecting a compatible charger to charge the internal lithium battery. An external power switch 11 controls the device's power on and off. A display screen 12 is fixedly connected to the external control panel 2, showing key status information such as the device's battery level, allowing users to easily monitor the device's power supply. A playback button 13 is also located on the external control panel 2, associated with the playback function to assist in controlling the playback of recorded content. The control panel 2 has an external USB button 14, which is used to control the start and stop of the USB module and is used in conjunction with USB audio playback. The control panel 2 also has an external parallel input button 15, which works with the parallel interface to receive parallel signals from other devices or as an external audio source input interface. The control panel 2 also has an external parallel output button 16, which can output the device signal to the next device to realize multi-device parallel operation. Both sides of the main body 1 are fixedly connected with cable management components, which are used to organize various cables connected to the device to avoid cable mess.

[0018] Reference Figures 4-6The cable management assembly includes a housing 17, which serves as the basic installation structure for the assembly. The housing 17 is fixedly connected to the outer wall of the main body 1, providing stable support for the assembly. A backing plate 18 is slidably connected inside the housing 17, and the backing plate 18 can move in a certain direction inside the housing 17. A spring 19 is fixedly connected to one side of the backing plate 18, providing elastic force to the backing plate 18 and enabling elastic adjustment of the clamping. A support column 20 is fixedly connected to the other side of the backing plate 18, connecting the backing plate 18 to the clamp 21 and transmitting elastic force. A clamp 21 is fixedly connected to the end of the support column 20 away from the backing plate 18, which is used to clamp and fix various cables to achieve cable management. A sliding opening 22 is provided on the outer wall of the clamp 21, which facilitates the insertion of cables into the clamp or adjustment of their position, improving the convenience of cable management.

[0019] Reference Figures 1-2 The front end of the main body 1 has multiple sound outlet slots 23, which are channels for the sound output of the device. They can transmit high sound pressure level voice, broadcast sound or dispersive sound outward to ensure effective sound diffusion. Both ends of the top of the main body 1 are fixedly connected with buckles 26. Buckles 26 can be used to connect portable accessories such as shoulder straps to improve the portability of the device when used with a multi-functional backpack. The top of the main body 1 is fixedly connected with a fixing block 27, which can help fix other auxiliary parts to the top structure of the main body.

[0020] Reference Figures 1-2 The top of the main body 1 is rotatably connected to a handle 24, which makes it easy for users to carry the device and is suitable for individual soldier mobile use scenarios. The top of the main body 1 has a groove 25, which can accommodate the handle 24 when it is not in use, so that the handle fits the top of the main body and reduces the space occupied by the device.

[0021] Reference Figures 5-6 The end of the spring 19 away from the abutment 18 is fixedly connected to the inner wall of the box 17, so that the spring 19 is in a stable stress state and provides continuous elastic support for the abutment 18. The abutment 18 abuts against the inner wall of the box 17, ensuring the stability of the abutment 18 during the sliding process and avoiding displacement.

[0022] Reference Figures 5-6 Two adjacent clamps 21 are symmetrically distributed. The symmetrically distributed clamps can clamp the cable from both sides, improve the firmness of the cable fixation, and ensure stable cable management.

[0023] Reference Figure 4 The bottom of the main body 1 is fixedly connected with four base pads 28. The four base pads 28 can make the equipment stable on various flat surfaces, avoid the bottom of the main body from directly contacting the contact surface and causing wear, and at the same time play a buffering role.

[0024] Working Principle: Pressing the power switch 11 starts the main unit 1, and the display screen 12 simultaneously displays key status information such as the device's battery level. The main unit 1, serving as the core structural support, integrates various functional components. Its fixed control panel 2 at the rear acts as the operation control center. For voice communication, a handheld dynamic microphone can be connected via the first microphone jack 8 or the second microphone jack 9. Pressing the microphone button transmits voice, and pressing the record button 3 triggers recording of the microphone input. Pressing the stop button 5 interrupts the recording process. Subsequently, pressing the playback button 4 and the playback button 13 starts playback, and the corresponding volume can be adjusted. To play audio files stored on a USB drive, the USB module is started and stopped via the USB button 14. The device automatically scans and plays the USB drive after insertion. Tracks can be switched using the previous track button 6 and the next track button 7. Voice, recording, and USB audio are all transmitted outwards through multiple playback slots 23 at the front of the main unit 1, achieving effective diffusion of high sound pressure level sound. When multiple devices need to work together to improve sound transmission, the parallel input button 15 receives input from other devices. The signal can be transmitted from the host computer or an external audio source such as a laptop computer, and then the signal can be output to the next device via the parallel output button 16 to achieve multi-device parallel operation; in the cable management components on both sides of the main body 1, the housing 17 provides stable support for the components, and one side of the slidingly connected abutment 18 inside is subjected to the elastic force of the spring 19. The end of the spring 19 away from the abutment 18 is fixed to the inner wall of the housing 17. The other side of the abutment 18 is connected to the clamp 21 through the support column 20. The two adjacent clamps 21 are symmetrically distributed, and the cable can be inserted through the sliding opening 22 on the outer wall of the clamp 21 to realize cable management. Organize to avoid clutter; the handle 24 on the top of the main body 1 is easy for users to carry, suitable for individual soldier mobile scenarios, and can be stored in the groove 25 on the top when not in use to reduce space occupation. The buckles 26 at both ends of the top can be connected to portable accessories such as shoulder straps. The fixing block 27 helps to fix other auxiliary parts. The four bottom pads 28 fixed at the bottom can make the device stand stably on various flat surfaces, avoid wear and tear and play a cushioning role. When the display screen 12 shows that the battery level is ≤20%, the internal lithium battery of the device can be charged by connecting the matching charger through the charging port 10.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high sound pressure level small size megaphone comprising a body (1), characterized in that: The main body (1) is fixedly connected to a control panel (2) at its rear end. The control panel (2) is provided with a recording button (3), a playback button (4), a stop button (5), a track start button (6), a track stop button (7), a first microphone jack (8), a second microphone jack (9), a charging port (10), a power button (11), a display screen (12), a playback button (13), a USB button (14), a parallel input button (15), and a parallel output button (16). Cable management components are fixedly connected to both sides of the main body (1).

2. The high sound pressure level small size megaphone according to claim 1, characterized in that: The cable management assembly includes a box (17), which is fixedly connected to the outer wall of the main body (1). A backing plate (18) is slidably connected inside the box (17). A spring (19) is fixedly connected to one side of the backing plate (18), and a support column (20) is fixedly connected to the other side of the backing plate (18). A clamp (21) is fixedly connected to the end of the support column (20) away from the backing plate (18). A sliding opening (22) is provided on the outer wall of the clamp (21).

3. The high sound pressure level small size megaphone according to claim 1, characterized in that: The front end of the main body (1) is provided with multiple sound-emitting slots (23).

4. The high sound pressure level small size megaphone according to claim 1, characterized in that: Both ends of the top of the main body (1) are fixedly connected with buckles (26), and the top of the main body (1) is fixedly connected with a fixing block (27).

5. The high sound pressure level small size megaphone according to claim 1, characterized in that: The top of the body (1) is rotatably connected to a handle (24), and the top of the body (1) is provided with a groove (25).

6. The high sound pressure level small size megaphone according to claim 2, characterized in that: The end of the spring (19) away from the abutment (18) is fixedly connected to the inner wall of the box (17), and the abutment (18) abuts against the inner wall of the box (17).

7. The high-SPL small form factor megaphone of claim 2, wherein: The two adjacent clamps (21) are symmetrically distributed.

8. The high-SPL small form factor megaphone of claim 1, wherein: The bottom of the main body (1) is fixedly connected with four bottom pads (28).

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