A teaching live streaming device for online education and its control method

Abstract

This invention discloses a teaching live-streaming device and its control method for online education. A cover is slidably installed inside the front opening of a housing. The projection display module includes a projection screen and two rotating cylinders. One end of a swing rod is rotatably mounted inside the housing. The projector is hinged to the other end of the swing rod. A recognition module is fixedly mounted in the middle of a pull rod. Both ends of the pull rod are detachably connected to the ends of the two rotating cylinders. A mobile phone holder is fixedly mounted inside the housing. This invention integrates the projection display module, projector, mobile phone holder, recognition module, and power module within the housing and provides a pull-out cover, achieving modular storage of the equipment. This facilitates live-streaming teaching for instructors in different locations. The swing rod allows for adjustable tilt angles, enabling multi-level and precise adjustment of the projector's projection height and distance.

Description

Technical Field

[0001] This invention relates to the field of teaching equipment technology, specifically to a live-streaming teaching device for online education and its control method. Background Technology

[0002] With the popularization of Internet technology and the rapid development of the online education industry, teaching live streaming equipment has become the core hardware support for online teaching. At present, online education live streaming mainly adopts two modes: one is a combination solution based on computers, cameras, microphones and other equipment; the other is a professional live streaming all-in-one machine.

[0003] Traditional live-streaming integrated teaching equipment is mostly fixed in place. The equipment is large, heavy, and difficult to move. For lecturers who need to teach in different locations (such as home, classroom, and outdoors), each time they change the live-streaming location, they need to reconnect multiple devices and adjust parameters. The operation is cumbersome and time-consuming, making it difficult to meet the needs of flexible teaching.

[0004] In contrast, the combined solution consists of separate projection, camera, display, and control devices, lacking an integrated design. Lecturers need to operate multiple devices simultaneously during the lecture, which not only takes up space but also easily leads to live broadcast interruptions due to compatibility issues between devices, affecting the teaching experience.

[0005] Therefore, the present invention provides a teaching live streaming device and its control method for online education to solve the above problems. Summary of the Invention

[0006] (a) Technical problems to be solved This invention provides a teaching live-streaming device and its control method for online education, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A teaching live streaming device for online education includes: a housing, a projection display module, a swing rod, a projector, a pull rod, a mobile phone holder, and a recognition module; The front of the container is open, and a cover plate is slidably installed inside the opening of the container. The projection display module includes a projection cloth and two rotating cylinders. The two ends of the projection cloth are respectively wrapped around the surfaces of the two rotating cylinders, and a support rod is installed at the bottom of the rotating cylinders. The container has two locking seats fixedly installed side by side inside. The locking seats are arc-shaped and are used to engage with the rotating drum. One end of the swing rod is rotatably mounted inside one end of the housing, and the projector is movably hinged to the other end of the swing rod; The recognition module is fixedly installed in the middle of the lever and is used to recognize the user's preset gesture commands. The two ends of the pull rod are respectively used to detachably connect to the ends of the two rotating drums, and the pull rod is used to tension the projection cloth; The phone holder is fixedly installed inside the housing and is used to hold the phone used for live streaming.

[0008] As a preferred technical solution of this application, the support rod includes a sliding rod and an anchor seat. The sliding rod is movably inserted into the bottom of the rotating drum. A locking bolt is installed on one side of the lower end of the rotating drum. The locking bolt is used to fix the sliding rod. The anchor seat is fixedly installed at the bottom of the sliding rod and is used to fix it to the ground.

[0009] As a preferred technical solution of this application, the anchoring seat includes a disc-shaped seat body, which is fixedly installed at the lower end of the slide rod. A suction cup is fixedly installed at the bottom of the disc-shaped seat body. Multiple threaded holes are evenly opened at the outer periphery of the anchoring seat, and threaded anchor rods are installed in each of the threaded holes.

[0010] As a preferred technical solution of this application, the swing rod includes a swing rod and a support rod. A U-shaped seat is fixedly installed on the top of the receiving box. One end of the swing rod is movably hinged to the U-shaped seat. The projector is movably hinged to the other end of the swing rod. A receiving groove is opened at the bottom of the swing rod. Sliding slots are opened on both sides of the receiving groove. A threaded shaft is fixedly installed at one end of the support rod. The two ends of the threaded shaft pass through the two sliding slots respectively. A nut is fitted on the outer end of the threaded shaft.

[0011] As a preferred technical solution of this application, the inner sidewall of the receiving box has multiple stepped grooves below the U-shaped seat. The stepped grooves are used to engage with the lower end of the support rod to support the support rod.

[0012] As a preferred technical solution of this application, the upper end of the rotating drum is provided with a positioning hole, and both ends of one side surface of the pull rod are fixed with protruding posts whose cross-sectional dimensions match the cross-sectional dimensions of the positioning hole.

[0013] As a preferred technical solution of this application, a power module is fixedly installed at the bottom of the housing, and the power module is used to supply power to the projector and the recognition module.

[0014] As a preferred technical solution of this application, the opening of the container box is provided with slots along the length direction on both sides, and the two sides of the cover plate are inserted into the corresponding slots.

[0015] As a preferred technical solution of this application, protruding plates are fixedly installed at the lower ends of both sides of the receiving box, and screws are installed on the protruding plates. Two protruding threaded seats are fixedly installed on the outer surface of the cover plate, and the distance between the two protruding threaded seats is equal to the distance between the screws on the two protruding plates.

[0016] A method for controlling a live-streaming teaching device used in online education includes the following steps: Pull the cover plate out of the opening of the container and place the cover plate at the bottom of the container. Secure the cover plate to the bottom of the container by screwing on the protruding threaded seat. Remove the projection display module from the housing, move the two rotating cylinders to the sides to unfold the projection cloth, then pull out the slide bar at the bottom of the rotating cylinder and fix the slide bar with the locking bolts, and then use suction cups or threaded anchors to stabilize the disc-shaped base to the ground. The tie rod is mounted on the upper end of the rotating drum via a protruding post; Flip the swing arm upwards, move the support rod and fix the end of the support rod with the nut, then deflect the support rod so that one end of the support rod is inserted into the slot, so that the support rod is tilted to support the swing arm; Place the phone used for live streaming on a phone stand, project the teaching materials used for live streaming onto the projection screen using a projector, and record and live stream the content on the projection screen using the phone on the phone stand. The recognition module recognizes the user's preset gesture commands. When a specific gesture is recognized, its internal main control module executes the corresponding control operation of the mobile phone.

[0017] (III) Beneficial Effects This invention integrates the projection display module, projector, mobile phone holder, recognition module, and power module into a housing box, and features a pull-out cover, achieving modular storage of the equipment. When not in use, all components can be stored in the housing box, making it compact and easy to carry. When in use, a complete live streaming environment can be quickly set up through a simple unfolding operation, eliminating the need to carry multiple separate devices, greatly facilitating lecturers to conduct live teaching in different locations.

[0018] By setting up swing arms, the tilt angle can be adjusted, realizing multi-level and fine adjustment of the projector's projection height and projection distance, which can flexibly adapt to different sizes of projection screens, different classroom environments and lecturers' teaching habits. By using a systematic control method, the operation process of unfolding, fixing, adjusting, connecting, and storing the equipment is streamlined. Instructors only need to follow the steps to complete the setup and storage of the live broadcast environment in a short time, which greatly reduces the threshold for use and realizes the convenient experience of "start broadcasting as soon as you turn it on". Attached Figure Description

[0019] Figure 1A schematic diagram of the structure of a teaching live-streaming device for online education; Figure 2 This is a schematic diagram of the internal structure of a container box in a teaching live-streaming device used for online education. Figure 3 A structural diagram of a transfer tube in a live-streaming teaching device used for online education; Figure 4 A cross-sectional view of a rotary tube in a teaching live-streaming device used for online education; Figure 5 This is a diagram illustrating the usage status of a teaching live-streaming device used for online education. Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 This is a flowchart illustrating the control method for a teaching live-streaming device used in online education.

[0020] In the picture: 1. Receiving box; 11. Card slot; 12. Mobile phone holder; 13. Stepped groove; 14. Protruding plate; 15. U-shaped seat; 2. Projection display module; 21. Rotary cylinder; 211. Positioning hole; 212. Locking bolt; 22. Projection cloth; 23. Sliding rod; 24. Anchor seat; 241. Disc-shaped seat; 242. Suction cup; 243. Threaded anchor rod; 25. Pull rod; 3. Swinging rod; 31. Swing rod; 32. Support rod; 33. Receiving groove; 34. Sliding groove opening; 35. Threaded shaft; 36. Nut; 4. Projector; 5. Power module; 6. Cover plate; 61. Protruding threaded seat; 7. Card slot; 8. Identification module. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] See Figures 1-6 As shown, the present invention provides a teaching live streaming device for online education, including: a housing box 1, a projection display module 2, a swing rod 3, a projector 4, a pull rod 25, a mobile phone holder 12, and a recognition module 8; The front side of the container 1 is open, and a cover plate 6 is slidably installed inside the opening of the container 1. The projection display module 2 is detachably installed in the housing 1. The projection display module 2 includes a projection cloth 22 and two rotating cylinders 21. The two ends of the projection cloth 22 are respectively wrapped around the surface of the two rotating cylinders 21. A support rod is installed at the bottom of the rotating cylinder 21. One end of the swing rod 3 is rotatably mounted inside the housing 1, and the projector 4 is movably hinged to the other end of the swing rod 3. The recognition module 8 is fixedly installed in the middle of the pull rod 25, and the recognition module 8 is used to recognize the user's preset gesture commands; The two ends of the pull rod 25 are respectively used to detachably connect to the ends of the two rotating drums 21, and the pull rod 25 is used to tension the projection cloth 22; The mobile phone holder 12 is fixedly installed inside the housing 1, and the mobile phone holder 12 is used to fix the mobile phone used for live streaming. The mobile phone establishes a pairing connection with the identification module 8 via Bluetooth.

[0023] Specifically, the recognition module 8 collects images of the lecturer's hands in real time and recognizes the user's preset gesture commands through the built-in gesture recognition chip. The preset gesture commands include, but are not limited to: "palm outstretched pointing at the phone = start live broadcast; index finger raised = switch to the next page of PPT; fist clenched = pause live broadcast; OK gesture = turn microphone on / off; V gesture = screenshot and save the current screen". When a specific gesture is recognized, the recognition module 8 sends the corresponding control command to the mobile phone through the wireless communication module, and the mobile phone executes the corresponding live broadcast control operation.

[0024] The aforementioned components and working principles are existing technologies and will not be described in detail here.

[0025] In this embodiment, two card holders 7 are fixedly installed side by side inside the housing 1. The card holders 7 are arc-shaped and are used to engage with the rotating cylinder 21. The diameter of the arc-shaped inner wall of the card holder 7 is adapted to the outer diameter of the rotating cylinder 21.

[0026] In this embodiment, the support rod includes a slide rod 23 and an anchor seat 24. The slide rod 23 is movably inserted into the bottom of the rotating cylinder 21. A locking bolt 212 is installed on one side of the lower end of the rotating cylinder 21. The locking bolt 212 is used to fix the slide rod 23. The anchor seat 24 is fixedly installed at the bottom of the slide rod 23 and is used to fix it to the ground.

[0027] In this embodiment, the anchoring base 24 includes a disc-shaped base 241, which is fixedly installed at the lower end of the slide rod 23. A suction cup 242 is fixedly installed at the bottom of the disc-shaped base 241. Multiple threaded holes are evenly opened at the outer periphery of the anchoring base 24, and threaded anchor rods 243 are installed in each of the threaded holes. By setting the anchoring base 24 and configuring both the suction cup 242 and the threaded anchor rod 243 as fixing structures, the appropriate fixing method can be selected according to different ground materials. For example, the suction cup 242 is used to adhere to the ground on a smooth ground, and the threaded anchor rod 243 is used to screw into the ground on a rough or outdoor ground, ensuring that the projection display module 2 can be stably fixed in various usage scenarios.

[0028] In this embodiment, the swing rod 3 includes a swing rod 31 and a support rod 32. A U-shaped seat 15 is fixedly installed at the top of the receiving box 1. One end of the swing rod 31 is movably hinged to the U-shaped seat 15. The projector 4 is movably hinged to the other end of the swing rod 31. A receiving groove 33 is opened at the bottom of the swing rod 31. Sliding grooves 34 are opened on both sides of the receiving groove 33. A threaded shaft 35 is fixedly installed at one end of the support rod 32. The two ends of the threaded shaft 35 pass through the two sliding grooves 34 respectively. A nut 36 is installed at the outer end of the threaded shaft 35.

[0029] In this embodiment, the inner wall of the receiving box 1 has multiple stepped grooves 13 below the U-shaped seat 15. The stepped grooves 13 are used to engage with the lower end of the support rod 32 to support the support rod 32. The multiple stepped grooves 13 are arranged vertically along the inner wall of the receiving box 1. The distance between each stepped groove 13 and the bottom of the receiving box 1 is different. The lower end of the support rod 32 is engaged in the stepped grooves 13 of different heights. With the position adjustment of the threaded shaft 35 in the sliding groove 34, the angle of the swing rod 31 can be adjusted in multiple levels and with fine precision to adapt to different heights of the projection screen 22 or different classroom environments.

[0030] When the nut 36 is loosened, the threaded shaft 35 can slide along the groove 34, thereby adjusting the connection point position between the support rod 32 and the swing rod 31; at the same time, the support rod 32 can swing around the axis of the threaded shaft 35. By adjusting the connection point position and the swing angle of the support rod 32, the pitch angle of the swing rod 31 can be changed, thereby adjusting the projection height and projection distance of the projector 4.

[0031] In this embodiment, the upper end of the rotating cylinder 21 is provided with a positioning hole 211. Both ends of one side surface of the pull rod 25 are fixed with protruding posts whose cross-sectional dimensions match the cross-sectional dimensions of the positioning hole 211. After the protruding posts at both ends of the pull rod 25 are inserted into the positioning holes 211 at the upper end of the corresponding rotating cylinder 21, the pull rod 25 spans across the top of the two rotating cylinders 21. The pull rod 25 is used to apply outward tension to the two rotating cylinders 21 from above after the projection cloth 22 is unfolded, to prevent the rotating cylinders 21 from undergoing relative displacement during the projection process, and to ensure that the surface of the projection cloth 22 is flat and wrinkle-free.

[0032] In this embodiment, a power module 5 is fixedly installed at the bottom of the housing 1. The power module 5 is used to power the projector 4 and the recognition module 8. The projector 4 and the recognition module 8 are connected to the power supply interface of the power module 5 through connecting cables. Specifically, the power module 5 includes a rechargeable lithium battery pack, a DC-DC voltage conversion circuit and multiple power supply interfaces. The power supply interfaces are respectively located on the inner side wall of the housing 1 and the surface of the pull rod 25. The projector 4, the recognition module 8 and the mobile phone on the mobile phone holder 12 are powered through pluggable connecting cables. The power module 5 is also provided with an external power input port for connecting to the mains power to charge the lithium battery pack.

[0033] To enable quick disassembly of the cover plate 6, in this embodiment, slots 11 are provided on both sides of the opening of the receiving box 1 along the length direction, and the two sides of the cover plate 6 are inserted into the corresponding slots 11.

[0034] In this embodiment, protruding plates 14 are fixedly installed at the lower ends of both sides of the container 1, and screws are installed on the protruding plates 14. Two protruding threaded seats 61 are fixedly installed on the outer surface of the cover plate 6, and the distance between the two protruding threaded seats 61 is equal to the distance between the screws on the two protruding plates 14. With the above structure, when live streaming is being conducted, the cover plate 6 can be fixed to the bottom of the container 1, increasing the contact area between the bottom of the container 1 and the ground, thereby ensuring the stability of the container 1 when placed on the ground.

[0035] like Figure 7 As shown, the present invention also provides a control method for a live-streaming teaching device used in online education, comprising the following steps: S1: Pull the cover plate 6 out from the opening of the receiving box 1, place the cover plate 6 at the bottom of the receiving box 1, and fix the protruding threaded seat 61 on the cover plate 6 with screws to make the cover plate 6 stably fixed at the bottom of the receiving box 1. Specifically, place the container 1 flat on a level ground or tabletop, ensuring the container is stable and does not wobble. Hold the protruding threaded seat 61 on the edge of the cover plate 6 and pull it outward along the direction of the slot 11 to completely remove the cover plate 6 from the opening of the container 1. Rotate the cover plate 6 180° so that the side of the cover plate 6 that originally closed the opening of the container is facing up and the side with the protruding threaded seat 61 is facing down. Place the cover plate 6 on the ground in front of the bottom of the container 1, aligning the two protruding threaded seats 61 on the cover plate 6 with the screw holes on the two protruding plates 14 on the bottom of the container 1. Tighten the screws on the protruding plates 14 so that the screws are screwed into the protruding threaded seats 61, thus fixing the cover plate 6 to the bottom of the container 1. At this time, the cover plate 6 acts as a forward-extending base, increasing the contact area between the container 1 and the ground and preventing the equipment from tipping over during operation.

[0036] S2: Take the projection display module 2 out of the housing box 1, move the two rotating cylinders 21 to the sides to unfold the projection cloth 22, then pull out the slide rod 23 at the bottom of the rotating cylinder 21, and fix the slide rod 23 by locking bolt 212, and then use suction cup 242 or threaded anchor rod 243 to stably connect the disc-shaped base 241 to the ground. Specifically, the projection display module 2 is taken out from the container 1, and the two rotating cylinders 21 are placed side by side on the ground, ensuring that the projection cloth 22 is facing upwards and is not folded. Hold the two rotating cylinders 21 with both hands and pull them horizontally in opposite directions to gradually unfold the projection cloth 22 from the surface of the two rotating cylinders 21. The pulling should be done at a uniform speed and smoothly to avoid wrinkles or tears in the projection cloth 22. Once the projection screen 22 is fully unfolded, place the two rotating cylinders 21 into their respective curved holders 7. The holders 7 can be pre-removed from the housing 1 and placed on either side of the ground. Ensure that the rotating cylinders 21 fit snugly against the curved inner wall of the holders 7, and that the rotating cylinders 21 do not roll on their own.

[0037] Pull out the slide rods 23 at the bottom of the two rotating cylinders 21 respectively. According to the required height of the projection cloth 22 from the ground, pull out the slide rods 23 to a suitable length. It is recommended that the lower edge of the projection cloth 22 be 40-60cm from the ground. Rotate the locking bolt 212 to lock the slide rods 23 and prevent the slide rods 23 from retracting during use. Choose the anchoring method based on the ground material: For smooth surfaces such as ceramic tiles, wood flooring, or epoxy flooring: Press suction cup 242 onto the surface to expel the air from the suction cup and allow it to adhere firmly. For rough ground or outdoor muddy ground: rotate the threaded anchor 243 to screw the anchor into the ground until the disc seat 241 is in close contact with the ground; Adjust the positions of the two anchors 24 to ensure the projection cloth 22 is taut and flat, without wrinkles or tilting. Use a spirit level to check if the upper edge of the projection cloth 22 is level. If it is not level, it can be corrected by fine-tuning the extension length of one side slide bar 23 or the position of the anchor 24. S3: The tie rod 25 is installed on the upper end of the rotating drum 21 via a protrusion; Specifically, remove the pull rod 25 and check whether the protrusions at both ends of the pull rod 25 are intact and without deformation; Align the protrusion at one end of the pull rod 25 with the positioning hole 211 at the upper end of the corresponding rotating drum 21, and insert it vertically to ensure that the protrusion is fully inserted into the positioning hole 211. Align the protrusion at the other end of the pull rod 25 with the positioning hole 211 at the upper end of the other rotating cylinder 21. At this time, it may be necessary to pull the rotating cylinder 21 slightly outward or press the pull rod 25 downward to allow the protrusion to be inserted smoothly. After confirming that the pull rod 25 spans the top of the two rotating cylinders 21, press down on the middle of the pull rod 25 with your palm to make the pull rod 25 produce a slight elastic deformation, apply outward tension to the two rotating cylinders 21, and further tighten the projection cloth 22. At this time, the surface of the projection cloth 22 should be flat and without waves.

[0038] S4: Flip the swing arm 31 upward, move the support rod 32, and fix the end of the support rod 32 with the nut 36. Then deflect the support rod 32, and one end of the support rod 32 is inserted into the slot 11, so that the support rod 32 supports the swing arm 31 in an inclined position. Specifically, the swing rod 31 inside the housing 1 is flipped upwards, so that the swing rod 31 rotates around the hinge axis of the U-shaped seat 15 to a roughly vertical direction; Loosen nut 36 to allow threaded shaft 35 to slide freely within slide groove 34. Adjust the connection point between the upper end of support rod 32 and swing rod 31. Based on the required projector height, slide threaded shaft 35 to a suitable position in slide groove 34. The upper end of slide groove 34 corresponds to a higher position of the projector, and the lower end corresponds to a lower position. Tighten the nut 36 initially to position the threaded shaft 35 within the groove 34, but still allow the support rod 32 to swing around the threaded shaft 35.

[0039] Insert the lower end of the support rod 32 into the stepped groove 13 on the inner side wall of the receiving box 1. Select stepped grooves 13 of different heights according to the required tilt angle of the swing rod 31: Choosing a higher stepped groove 13: The tilt angle of the swing arm 31 is small, and the projection height of the projector 4 is higher, which is suitable for situations where the projection screen 22 is hung high. Choose the lower step groove 13: The swing arm 31 has a large tilt angle, and the projector 4 has a lower projection height, which is suitable for situations where the projection cloth 22 is hung low. Adjust the hinge angle between the projector 4 and the end of the swing arm 31 so that the lens of the projector 4 is directly facing the center area of ​​the projection screen 22. Visually inspect that the optical axis of the projector 4 is perpendicular to the plane of the projection screen 22 to avoid trapezoidal distortion. Tighten nut 36 to lock threaded shaft 35, and at the same time ensure that the lower end of support rod 32 is firmly inserted into stepped groove 13. Gently shake projector 4 to confirm that bracket is firmly locked and not loose.

[0040] S5: Place the mobile phone used for live streaming on the mobile phone holder 12, project the teaching materials used for live streaming onto the projection screen 22 using the projector 4, and record and live stream the content on the projection screen 22 using the mobile phone holder 12. Specifically, remove the phone holder 12 from the housing 1. If the holder is foldable, unfold it and place it on top of the housing 1 or on the cover 6 in a suitable position. Adjust the clamping width of the phone holder 12 to match the size of the phone. Hold the phone running the live streaming app on the phone holder 12, ensuring that the phone camera is pointed at the projection screen 22 area and that the phone is not directly exposed to the lens by the light from the projector 4 to avoid overexposure.

[0041] Connect the power cord: Insert the power cord of the projector 4 into the power supply interface on the inner wall of the housing 1; insert the mobile phone charging cable into the USB power supply interface on the surface of the pull rod 25 if available; connect the identification module 8 to the power module 5 via the connecting cable. Confirm that all devices are powered normally, the projector 4 lights up and the mobile phone displays the charging status; Turn on the projector 4 and adjust the focus knob on the projector 4 to make the image on the projection screen 22 clear. If trapezoidal distortion appears in the image, it can be corrected using the trapezoidal correction function of the projector 4 or by adjusting the angle of the swing arm 31. Open the live streaming app on your phone and enter the live stream preview interface. Adjust the position and angle of the phone stand 12 so that the phone screen completely covers the projection screen area 22, with no obstructions or dark corners at the edges of the screen; When setting live streaming parameters such as resolution and bitrate in the live streaming software, it is recommended to use 1080p@30fps with a bitrate of 2-4Mbps to ensure clear and smooth video. Turn on your phone's Bluetooth, search for and pair with identification module 8. Once paired successfully, the indicator light on identification module 8 will stay on, usually in blue.

[0042] S6: The recognition module recognizes the user's preset gesture commands. When a specific gesture is recognized, its internal main control module executes the corresponding control operation of the mobile phone.

[0043] Specifically, the instructor should stand or sit in front of the projection screen 22, ensuring their hands are within the field of view of the recognition module 8. The recognition module 8 is typically mounted in the middle of the lever 25, with its lens facing the instructor. It is recommended that the distance between the instructor and the recognition module 8 be maintained at 0.5-1.5 meters. The instructor makes a preset gesture, and the recognition module 8 captures the hand image in real time through the built-in camera. The gesture recognition chip analyzes the gesture features. The system's preset gesture commands are as follows: Extend your palm flat with your five fingers together pointing towards your phone to start / stop the live stream. Raise your index finger and clench your other four fingers into a fist to indicate the next slide in the PowerPoint presentation. A clenched fist signifies pausing / resuming the live stream; The OK gesture indicates that the microphone is turned on / off; The V-sign gesture represents saving a screenshot.

[0044] Once the recognition module 8 recognizes a valid gesture, it sends the corresponding control command to the mobile phone via Bluetooth. After receiving the command, the mobile phone performs the corresponding operation, such as switching PPT, muting / enabling microphone, etc. To verify whether the gesture has been successfully recognized, the recognition module 8 can be configured with a buzzer or an LED indicator, as follows: When recognition is successful, a short "beep" sound or an indicator light flashes once; If the gesture is not recognized after 3 consecutive attempts, check the following: whether the lens of the recognition module 8 is blocked, whether the hand is in the recognition area, whether the ambient light is too dark (if possible, turn on the fill light), and whether the Bluetooth connection is normal.

[0045] After the live broadcast ends, reverse the steps S5-S1 above to store the projector 4, swing rod 3, and projection display module 2 into the storage box 1 in sequence, insert the cover plate 6 into the slot 11 to close the opening of the storage box 1, and complete the portable storage of the equipment.

[0046] This live streaming equipment is easy to store, install, and disassemble, allowing it to be used to change live streaming locations at any time.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A teaching live-streaming device for online education, characterized in that, include: The container, projection display module, swing rod, projector, pull rod, mobile phone holder, and recognition module; The front of the container is open, and a cover plate is slidably installed inside the opening of the container. The projection display module includes a projection cloth and two rotating cylinders. The two ends of the projection cloth are respectively wrapped around the surfaces of the two rotating cylinders, and a support rod is installed at the bottom of the rotating cylinders. The container has two locking seats fixedly installed side by side inside. The locking seats are arc-shaped and are used to engage with the rotating drum. One end of the swing rod is rotatably mounted inside one end of the housing, and the projector is movably hinged to the other end of the swing rod; The recognition module is fixedly installed in the middle of the lever and is used to recognize the user's preset gesture commands. The two ends of the pull rod are respectively used to detachably connect to the ends of the two rotating drums, and the pull rod is used to tension the projection cloth; The phone holder is fixedly installed inside the housing and is used to hold the phone used for live streaming.

2. The online teaching live streaming equipment according to claim 1, characterized in that: The support rod includes a sliding rod and an anchor seat. The sliding rod is movably inserted into the bottom of the rotating drum. A locking bolt is installed on one side of the lower end of the rotating drum. The locking bolt is used to fix the sliding rod. The anchor seat is fixedly installed at the bottom of the sliding rod and is used to fix it to the ground.

3. The online teaching live streaming equipment according to claim 2, characterized in that: The anchoring seat includes a disc-shaped seat body, which is fixedly installed at the lower end of the slide rod. A suction cup is fixedly installed at the bottom of the disc-shaped seat body. Multiple threaded holes are evenly opened at the outer periphery of the anchoring seat, and threaded anchor rods are installed in each of the threaded holes.

4. The online teaching live streaming equipment according to claim 1, characterized in that: The swing rod includes a swing arm and a support rod. A U-shaped seat is fixedly installed at the top of the receiving box. One end of the swing arm is movably hinged to the U-shaped seat. The projector is movably hinged to the other end of the swing arm. A receiving groove is opened at the bottom of the swing arm. Sliding slots are opened on both sides of the receiving groove. A threaded shaft is fixedly installed at one end of the support rod. The two ends of the threaded shaft pass through the two sliding slots respectively. A nut is fitted on the outer end of the threaded shaft.

5. The online teaching live streaming equipment according to claim 4, characterized in that: The inner wall of the receiving box has multiple stepped grooves below the U-shaped seat. These stepped grooves are used to engage with the lower end of the support rod to support the support rod.

6. The online education live-streaming equipment according to claim 1, characterized in that: The upper end of the rotating drum is provided with a positioning hole, and both ends of one side surface of the pull rod are fixed with protruding posts whose cross-sectional dimensions match the cross-sectional dimensions of the positioning hole.

7. The online teaching live streaming equipment according to claim 1, characterized in that: A power module is fixedly installed at the bottom of the container, which is used to power the projector and the recognition module.

8. The online education live-streaming equipment according to claim 1, characterized in that: The opening of the container is provided with slots along its length on both sides, and the cover plate is inserted into the corresponding slots on both sides.

9. The online teaching live streaming equipment according to claim 1, characterized in that: Both sides of the container are fixedly installed with protruding plates at the lower ends, and screws are installed on the protruding plates. Two protruding threaded seats are fixedly installed on the outer surface of the cover plate, and the distance between the two protruding threaded seats is equal to the distance between the screws on the two protruding plates.

10. A control method for a live-streaming teaching device used in online education, characterized in that, The teaching live-streaming equipment used for online education as described in any one of claims 1-9 includes the following steps: Pull the cover plate out of the opening of the container and place the cover plate at the bottom of the container. Secure the cover plate to the bottom of the container by screwing on the protruding threaded seat. Remove the projection display module from the housing, move the two rotating cylinders to the sides to unfold the projection cloth, then pull out the slide bar at the bottom of the rotating cylinder and fix the slide bar with the locking bolts, and then use suction cups or threaded anchors to stabilize the disc-shaped base to the ground. The tie rod is mounted on the upper end of the rotating drum via a protruding post; Flip the swing arm upwards, move the support rod and fix the end of the support rod with the nut, then deflect the support rod so that one end of the support rod is inserted into the slot, so that the support rod is tilted to support the swing arm; Place the phone used for live streaming on a phone stand, project the teaching materials used for live streaming onto the projection screen using a projector, and record and live stream the content on the projection screen using the phone on the phone stand. The recognition module recognizes the user's preset gesture commands. When a specific gesture is recognized, its internal main control module executes the corresponding control operation of the mobile phone.

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