A portable projection and amplification device

Abstract

This utility model discloses a portable projection amplification device in the field of amplification equipment technology, aiming to solve the problems of limited functionality, poor interactivity, and audio-visual asynchrony in existing portable amplification devices. The device mainly includes a speaker unit and a projection mechanism. The speaker unit is equipped with a power module, a control module, and a communication connection module. The projection mechanism includes a projector unit, a foldable support frame, and a projection screen. The projector unit is located on top of the speaker unit. The support frame achieves rapid unfolding and folding through the cooperation of limiting grooves and limiting holes. The projection screen achieves rapid installation and removal through the cooperation of magnets and iron pins. Universal locking wheels and a pull rod are installed at the bottom of the speaker unit for easy movement and carrying. This application provides a projection amplification device that is multifunctional, highly interactive, portable, flexible, and easy to operate through functional integration, structural optimization, and the application of intelligent control modules.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker equipment technology, specifically a portable projection loudspeaker device. Background Technology

[0002] With the increasing variety of social activities, portable loudspeakers have been widely used in scenarios such as square dancing, community entertainment, and outdoor sports guidance. However, existing portable loudspeakers have the following main problems in terms of functionality and user experience.

[0003] Existing portable amplification devices primarily focus on audio playback, lacking multimedia support. For example, in square dancing activities, users often need to simultaneously play music and display dance videos, but traditional devices cannot meet this need, requiring users to carry additional video playback equipment, increasing complexity and cost. Traditional amplification devices cannot provide video display capabilities, limiting themselves to audio output. This singular output method makes it difficult to enhance the fun and appeal of activities, especially in scenarios requiring visual assistance (such as dance instruction and outdoor sports guidance). Existing devices cannot provide a synchronized audio-visual experience, limiting user interactivity and participation.

[0004] To address the aforementioned issues, this application provides a portable projection amplification device. Utility Model Content

[0005] The purpose of this utility model is to provide a portable projection amplification device in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution: A portable projection amplification device includes a speaker body and a projection mechanism, wherein: The speaker body is equipped with a power module, a control module and a communication connection module; The projection mechanism includes a projector body, a foldable support frame, and a projection screen. The projector body is located on top of the speaker body, and the support frame is located on the side of the speaker body. By opening the support frame, the projection screen can be installed on the support frame to achieve the projection function.

[0007] Furthermore, the number of support frames is two and they are symmetrically arranged on opposite sides of the speaker body. Each support frame includes a mounting block installed on one side of the speaker body. A horizontal mounting rod is hinged to the mounting block, and a vertical connecting rod is fixed to one end of the mounting rod. When the two support frames are rotated to the same plane, the projection screen can be detachably connected between the two connecting rods.

[0008] Furthermore, the connecting rod includes a connecting cylinder fixed to the end of the mounting rod. A sliding groove penetrating the top of the connecting cylinder is constructed on one of the vertical sides of the connecting cylinder. A fixing rod is slidably installed inside the sliding groove. Two fixing holes are constructed on the side of the fixing rod facing the opening of the sliding groove. Magnets are installed inside the fixing holes. Device rods are fixed on both opposite sides of the projection screen. The two device rods correspond to the two fixing rods respectively. Two iron pins are fixed on the device rods. The two iron pins are movably inserted into the two fixing holes respectively.

[0009] Furthermore, the fixed rod has two positioning holes on the side facing away from the opening of the sliding groove, and a positioning pin is threaded into the connecting cylinder, the positioning pin being movably inserted into one of the positioning holes.

[0010] Furthermore, vertical limiting grooves are constructed on both opposite sides of the speaker body. The two mounting blocks are slidably installed inside the two limiting grooves respectively. At least two limiting holes are constructed on both opposite sides of the speaker body, and the limiting holes on both opposite sides of the speaker body correspond one-to-one. A mounting plate is fixed on the mounting block, and a limiting rod is movably inserted through the mounting plate. A baffle is fixedly sleeved on the limiting rod, and a spring sleeved on the limiting rod is connected between the baffle and the mounting plate. One end of the limiting rod is movably inserted into one of the limiting holes.

[0011] Furthermore, an inclined reinforcing rod is fixedly connected between the mounting rod and the connected connecting cylinder.

[0012] Furthermore, the top of the speaker body is constructed with a receiving groove, and a vertical electric push rod is fixed inside the receiving groove. The bottom of the projector body is hinged to the top of the electric push rod, and a sealing cover is installed on the top side of the projector body. When the projector body is completely retracted into the receiving groove, the sealing cover closes the opening of the receiving groove.

[0013] Furthermore, the bottom of the speaker body is equipped with four omnidirectional locking wheels arranged in a rectangular pattern, and a pull rod is provided on one side of the speaker body.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This solution integrates audio and projection functions into one unit. By combining the audio unit and the projection mechanism, it achieves synchronous output of audio playback and video projection. Users do not need to carry additional video playback equipment, which reduces equipment costs and usage complexity, and meets the needs for audio and video synchronization in scenarios such as square dancing and community activities.

[0015] 2. The projection mechanism in this solution provides users with a visual assistance platform, enabling audio and video content to be displayed synchronously. This multimedia experience with synchronized audio and video significantly enhances the fun and appeal of the activity, especially in scenarios that require visual assistance (such as dance teaching, outdoor sports guidance, etc.), thereby improving user interactivity and participation.

[0016] 3. The projection mechanism in this solution adopts a foldable storage design, and the support frame and projection screen can be quickly unfolded and stored, making it easy to carry and store. The universal locking wheels and pull rod design installed at the bottom of the speaker body further improve the mobility and portability of the equipment, making it suitable for a variety of usage scenarios.

[0017] 4. This solution supports multiple input methods (such as USB, Wi-Fi, Bluetooth, etc.) through the control module and communication connection module on the speaker itself, enabling synchronized playback of audio and video content. The intelligent control module ensures synchronized output of audio and video, solving the problem of audio-visual asynchrony in existing devices and improving the user experience. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 A three-dimensional sectional view; Figure 3 This utility model Figure 1 A three-dimensional sectional view from another direction; Figure 4 This utility model Figure 3 An enlarged view of structure A in the middle; Figure 5 This utility model Figure 1 A three-dimensional structural diagram of the middle section; Figure 6 This is a three-dimensional structural diagram of another aspect of the present invention; Figure 7 This utility model Figure 6 A partial view of a three-dimensional sectional view.

[0019] In the diagram: 1. Speaker body; 11. Limiting slide groove; 12. Limiting hole; 13. Receiving groove; 14. Electric push rod; 15. Universal locking wheel; 16. Pull rod; 2. Projection mechanism; 21. Projector body; 211. Sealing cover; 22. Support frame; 221. Mounting block; 222. Mounting rod; 223. Connecting rod; 224. Connecting cylinder; 225. Sliding groove; 226. Fixing rod; 227. Fixing hole; 228. Magnet; 229. Positioning hole; 2210. Positioning pin; 2211. Mounting plate; 2212. Limiting rod; 2213. Baffle; 2214. Spring; 2215. Reinforcing rod; 23. Projection screen; 231. Device rod; 232. Iron pin. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] This application provides a portable projection amplification device, primarily addressing the problem that existing portable amplification devices mainly focus on audio playback and lack multimedia support. For example, in square dancing activities, users often need to simultaneously play music and display dance video, but traditional devices cannot meet this requirement, forcing users to carry additional video playback equipment, increasing complexity and cost. Traditional amplification devices cannot provide video display functionality, limiting themselves to audio output. This single output method makes it difficult to enhance the fun and appeal of activities, especially in scenarios requiring visual assistance (such as dance instruction, outdoor sports guidance, etc.). Existing devices cannot provide a synchronized audio-visual experience, limiting user interactivity and participation. The following technical solution is provided, which will be discussed in conjunction with... Figures 1-7 Please provide a detailed explanation: A portable projection amplification device mainly includes a speaker body 1 and a projection mechanism 2, wherein: The speaker body 1 is equipped with a power module, a control module and a communication connection module, which are used to provide audio playback functions and power management and signal processing for the device; The projection mechanism 2 includes a projector body 21, a foldable support frame 22, and a projection screen 23. The projector body 21 is located on the top of the speaker body 1, and the support frame 22 is located on the side of the speaker body 1. By opening the support frame 22, the projection screen 23 can be installed on the support frame 22 to realize the projection function.

[0022] In actual use, the user first unfolds the support frame 22 from the side of the speaker body 1. After unfolding, the projection screen 23 is installed on the support frame 22, and the projector body 21 projects. The communication connection module of the speaker body 1 supports multiple input methods, such as connecting a USB flash drive via USB interface, or connecting a smartphone or other device via Wi-Fi or Bluetooth to obtain audio and video content. The control module performs synchronous processing of audio and video signals to ensure synchronized playback of audio and video, thereby providing a high-quality multimedia experience.

[0023] This device solves the problem of limited functionality in traditional amplification equipment by integrating the speaker body 1 and the projection mechanism 2. Users do not need to carry additional video playback equipment, which reduces equipment costs and usage complexity. At the same time, the foldable storage design of the projection screen 23 further improves the portability and flexibility of the device, making it suitable for various usage scenarios.

[0024] Further, please refer to Figure 2 and Figure 7 The support frame 22 consists of two symmetrically arranged on opposite sides of the speaker body 1. Each support frame 22 includes a mounting block 221 mounted on one side of the speaker body 1. A horizontal mounting rod 222 is hinged to the mounting block 221. A vertical connecting rod 223 is fixed to one end of the mounting rod 222. When the two support frames 22 rotate to the same plane, the projection screen 23 can be detachably connected between the two connecting rods 223. The connecting rod 223 includes a connecting cylinder 224 fixed to the end of the mounting rod 222. A sliding groove 225 penetrating the top of the connecting cylinder 224 is constructed on one vertical side of the connecting cylinder 224. A fixing rod is slidably installed inside the sliding groove 225. 226. Two fixing holes 227 are constructed on the side of the fixing rod 226 facing the opening of the sliding groove 225. Magnets 228 are installed inside the fixing holes 227. Device rods 231 are fixed on both sides of the projection screen 23. The two device rods 231 correspond to the two fixing rods 226 respectively. Two iron pins 232 are fixed on the device rods 231. The two iron pins 232 are movably inserted into the two fixing holes 227 respectively. Two positioning holes 229 are constructed on the side of the fixing rod 226 facing away from the opening of the sliding groove 225. Positioning pins 2210 are threaded into the connecting cylinder 224. Positioning pins 2210 are movably inserted into one of the positioning holes 229.

[0025] In actual use, the user first unfolds the support frame 22 from the side of the speaker body 1. After unfolding, the projection screen 23 is installed on the support frame 22. The magnet 228 and the iron pin 232 cooperate to achieve quick fixation, ensuring the flatness and stability of the projection screen 23. The height can be adjusted by pulling the fixing rod 226. The positioning pin 2210 and the positioning hole 229 cooperate to ensure the stability of the two support frames 22.

[0026] This device solves the problem of limited functionality in traditional amplification equipment by integrating the speaker body 1 and the projection mechanism 2. Users do not need to carry additional video playback equipment, which reduces equipment costs and usage complexity. The quick installation method of magnet 228 and iron pin 232 simplifies the operation process and makes it easy to store and fold when not in use, reducing space occupation.

[0027] In this embodiment, vertical limiting grooves 11 are constructed on both opposite sides of the speaker body 1. Two mounting blocks 221 are slidably installed inside the two limiting grooves 11 respectively. This design allows the support frame 22 to slide along the limiting grooves 11, thereby achieving height adjustment of the support frame 22 to adapt to different usage scenarios and projection requirements. At least two limiting holes 12 are constructed on both opposite sides of the speaker body 1, and the limiting holes 12 on both opposite sides of the speaker body 1 correspond one-to-one. A mounting plate 2211 is fixed on the mounting block 221. A limiting rod 2212 is inserted through the upper part of the mounting plate 2211. A baffle 2213 is fixedly sleeved on the limiting rod 2212. A spring 2214 sleeved on the limiting rod 2212 is connected between the baffle 2213 and the mounting plate 2211. One end of the limiting rod 2212 is movably inserted into one of the limiting holes 12. With this design, the user can quickly position the support frame 22 to the required position. The cooperation between the limiting rod 2212 and the limiting hole 12 ensures the stability of the support frame 22, while the setting of the spring 2214 can ensure that the limiting rod 2212 is stably inserted into the limiting hole 12.

[0028] An inclined reinforcing rod 2215 is fixedly connected between the mounting rod 222 and the connected cylinder 224. The design of the reinforcing rod 2215 significantly improves the overall structural strength of the support frame 22, ensuring that the support frame 22 can stably support the projection screen 23 during use, and preventing structural deformation or loosening caused by external force or long-term use.

[0029] In actual use, the user first unfolds the support frame 22 from the side of the speaker body 1, adjusts the height of the support frame 22 in the limiting groove 11 by sliding the mounting block 221, and then presses the limiting rod 2212 to align it with the corresponding limiting hole 12 and lock it automatically, thereby quickly completing the positioning and fixing of the support frame 22. After unfolding, the projection screen 23 is installed on the support frame 22 and quickly fixed by the cooperation of the magnet 228 and the iron pin 232, ensuring that the projection screen 23 is flat and stable. The projector body 21 adjusts the projection angle by the extension and retraction of the electric push rod 14 to ensure that the projected image is clear and meets the user's needs.

[0030] Furthermore, please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7The top of the speaker body 1 has a receiving groove 13, inside which a vertical electric push rod 14 is fixed. The bottom of the projector body 21 is hinged to the top of the electric push rod 14. A sealing cover 211 is installed on the top side of the projector body 21. When the projector body 21 is completely retracted into the receiving groove 13, the sealing cover 211 closes the opening of the receiving groove 13. This design allows the projector body 21 to be completely retracted into the speaker body 1 when not in use, effectively protecting the projector body 21 from external impacts and dust, while maintaining the integrity and aesthetics of the device. The bottom of the speaker body 1 is equipped with four universal locking wheels 15 arranged in a rectangular pattern. A pull rod 16 is provided on one side of the speaker body 1. The design of the universal locking wheels 15 allows the device to be easily moved to the desired position, while the pull rod 16 further improves the portability of the device, making it convenient for users to quickly move the device between different scenarios.

[0031] When this device is used in practice: The user first places the device on a stable surface, holds the mounting block 221 of the support frame 22, pulls the limiting rod 2212 so that one end of it disengages from the limiting hole 12, and then slides it upward along the vertical limiting slide grooves 11 on both sides of the speaker body 1 until the height of the support frame 22 is adjusted to a suitable projection position. At this time, the user releases the limiting rod 2212, and under the action of the spring 2214, the limiting rod 2212 automatically inserts into the limiting hole 12, thereby quickly completing the positioning and fixing of the support frame 22 and ensuring that the support frame 22 remains stable during use. Next, the projection screen 23 is installed on the unfolded support frame 22. The device rods 231 on both sides of the projection screen 23 are aligned with the connecting rods 223 on the two support frames 22 respectively. The iron pins 232 on the device rods 231 are inserted into the fixing holes 227 of the fixing rods 226 on the connecting rods 223. The magnets 228 and the iron pins 232 attract each other, realizing the quick fixing of the projection screen 23 and ensuring that the screen is flat and stable. If the height of the screen needs to be adjusted, the fixing rods 226 can be pulled to slide up and down in the sliding grooves 225 of the connecting tubes 224. After finding a suitable position, the positioning pins 2210 are rotated to insert them into the positioning holes 229 on the side of the fixing rods 226 facing away from the opening of the sliding grooves 225, thereby fixing the height of the fixing rods 226. After the support frame 22 and projection screen 23 are installed, the audio and video source is connected through the communication connection module on the speaker body 1. Users can connect a USB flash drive through the USB interface, or connect a smartphone, tablet or other device through Wi-Fi or Bluetooth to transmit audio and video content to the device. The control module processes the audio and video signals synchronously to ensure that the audio and video are played synchronously, providing users with a high-quality multimedia experience. When the angle of the projected image needs to be adjusted, the electric push rod 14 in the top receiving slot 13 of the speaker body 1 is used to control the extension and retraction of the electric push rod 14 to push the projector body 21 to rotate around the hinge point at its bottom, thereby adjusting the tilt angle of the projector body 21 to ensure that the projected image is clear and meets the user's needs. When the projector body 21 is completely stored inside the receiving slot 13, the sealing cover 211 will automatically close the opening of the receiving slot 13, effectively protecting the projector body 21 from external collisions and dust, while maintaining the integrity and aesthetics of the device. After use, the projection screen 23 is removed from the support frame 22, and the support frame 22 is folded and stored to the side of the speaker body 1. With the four rectangular universal locking wheels 15 installed at the bottom of the speaker body 1, the user can easily move the device to other locations. The pull rod 16 on the side of the speaker body 1 further improves the portability of the device, making it convenient for users to quickly move the device between different scenarios.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable projection sound amplification device comprising an acoustic body (1) and a projection mechanism (2), characterized in that, in: The speaker body (1) is equipped with a power module, a control module and a communication connection module; The projection mechanism (2) includes a projector body (21), a foldable support frame (22), and a projection screen (23). The projector body (21) is located on the top of the speaker body (1), and the support frame (22) is located on the side of the speaker body (1). By opening the support frame (22), the projection screen (23) can be installed on the support frame (22) to realize the projection function. The number of the support frame (22) is two and they are symmetrically arranged on opposite sides of the speaker body (1). The support frame (22) includes a mounting block (221) installed on one side of the speaker body (1). A horizontal mounting rod (222) is hinged on the mounting block (221). A vertical connecting rod (223) is fixed at one end of the mounting rod (222). When the two support frames (22) are rotated to the same plane, the projection screen (23) can be detachably connected between the two connecting rods (223). The connecting rod (223) includes a connecting cylinder (224) fixed to the end of the mounting rod (222). A sliding groove (225) penetrating the top of the connecting cylinder (224) is constructed on one of the vertical sides of the connecting cylinder (224). A fixing rod (226) is slidably installed inside the sliding groove (225). Two fixing holes (227) are constructed on the side of the fixing rod (226) facing the opening of the sliding groove (225). A magnet (228) is installed inside the fixing hole (227). Device rods (231) are fixed on both opposite sides of the projection screen (23). The two device rods (231) correspond to the two fixing rods (226) respectively. Two iron pins (232) are fixed on the device rods (231). The two iron pins (232) are movably inserted into the two fixing holes (227) respectively. The fixed rod (226) has two positioning holes (229) on the side facing away from the opening of the sliding groove (225). The connecting cylinder (224) is threaded with a positioning pin (2210), which is movably inserted into one of the positioning holes (229). The speaker body (1) has vertical limiting grooves (11) on both opposite sides. The two mounting blocks (221) are slidably installed inside the two limiting grooves (11). The speaker body (1) has at least two limiting holes (12) on both opposite sides. The limiting holes (12) on both opposite sides of the speaker body (1) correspond one-to-one. The mounting block (2211) is fixed with a mounting plate (2211). The mounting plate (2211) is movably inserted with a limiting rod (2212). The limiting rod (2212) is fixedly fitted with a baffle (2213). A spring (2214) is fitted on the limiting rod (2212) and the mounting plate (2211). One end of the limiting rod (2212) is movably inserted into one of the limiting holes (12). An inclined reinforcing rod (2215) is fixedly connected between the mounting rod (222) and the connected cylinder (224). The top of the speaker body (1) has a receiving groove (13), and a vertical electric push rod (14) is fixed inside the receiving groove (13). The bottom of the projector body (21) is hinged to the top of the electric push rod (14). A sealing cover (211) is installed on the top side of the projector body (21). When the projector body (21) is completely retracted into the receiving groove (13), the sealing cover (211) closes the opening of the receiving groove (13).

2. The portable projection and amplification device of claim 1, wherein: The bottom of the speaker body (1) is equipped with four universal locking wheels (15) arranged in a rectangular pattern, and a pull rod (16) is provided on one side of the speaker body (1).

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