Demonstration auxiliary device for smart classroom
By designing a demonstration aid device for smart classrooms, the problem of poor position adjustment capability of traditional supplementary lights has been solved, enabling flexible adjustment of light and ensuring high-quality image acquisition by image acquisition equipment, especially the clarity of documents.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-03-03
AI Technical Summary
Traditional fill lights have poor position adjustment capabilities on document cameras, resulting in blind spots and overexposed areas, which affect the image quality of image acquisition equipment, especially when processing planar materials.
A demonstration aid device for smart classrooms was designed, including a locking ring, a support plate, and a supplementary lighting component. It is detachably connected to the lens of an image acquisition device via a connecting sleeve. The support frame and the support shaft are adjustable by sliding and rotating to ensure that the light accurately illuminates the image acquisition area and avoids blind spots. The component is prevented from detaching by a limiting ring and a positioning groove.
It enables flexible adjustment of the supplementary lighting components, avoiding blind spots and overexposed areas, and improving the image acquisition quality of the image acquisition device, especially the clarity of documents.
Smart Images
Figure CN223966964U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of teaching equipment, and in particular relates to a demonstration auxiliary device for smart classrooms. Background Technology
[0002] A smart classroom is a new teaching model that utilizes advanced information technology to achieve intelligent management of educational resources, personalized learning path recommendations, interactive learning, and intelligent assessment. In a smart classroom, teachers can use various emerging technologies to conduct teaching explanations and demonstrations, thereby stimulating students' learning interest and enhancing their learning outcomes.
[0003] The most common demonstration devices in existing smart classrooms include electronic displays, interactive whiteboards, and document cameras. Among them, a document camera is a demonstration device that uses photoelectric conversion technology to convert information such as physical objects, documents, or pictures into image signals through a CCD camera and outputs them on a projector or electronic display screen.
[0004] To improve the image quality of document cameras, those skilled in the art typically add supplementary lights to them to enhance ambient brightness and generate clearer images. However, traditional supplementary lights have poor position adjustment capabilities and cannot be flexibly adjusted according to the movement of the image acquisition device. Especially when converting images of flat materials such as documents, traditional supplementary lights can easily cause blind spots or overexposed areas on the document, affecting the accuracy of text recognition and failing to meet practical needs. Utility Model Content
[0005] In view of this, the present invention aims to provide a demonstration aid device for smart classrooms to solve the above-mentioned technical problems.
[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0007] A demonstration aid device for smart classrooms includes: a locking ring, a support plate, and two supplementary lighting components; the locking ring is detachably fitted onto the lens of an image acquisition device; the support plate has an assembly hole, and a rotatable connecting sleeve is provided inside the assembly hole, and the support plate is detachably connected to the locking ring through the connecting sleeve; the two supplementary lighting components are arranged in a mirror image on both sides of the support plate, and each supplementary lighting component includes a support frame and a support shaft; a receiving hole is provided on the side wall of the support plate, one end of the support frame is slidably disposed inside the receiving hole, and the other end of the support frame is rotatably connected to the support shaft, the axis of the support shaft is perpendicular to the axis of the assembly hole, and a supplementary lighting strip is provided on the side wall of the support shaft.
[0008] Furthermore, a limiting ring is provided on the outer side wall of the connecting sleeve, and a limiting groove for accommodating the limiting ring is provided on the inner side wall of the assembly hole.
[0009] Furthermore, the limiting ring is provided with a positioning protrusion, and a plurality of positioning grooves for accommodating the positioning protrusion are provided inside the limiting groove, and the plurality of positioning grooves are evenly distributed in a ring on the periphery of the assembly hole axis.
[0010] Furthermore, the bottom end of the connecting sleeve is provided with a connecting ring, the inner diameter of which is equal to the inner diameter of the locking ring. A first connecting screw hole is provided on the connecting ring, and a connecting bolt is provided inside the first connecting screw hole. A second connecting screw hole for accommodating the connecting bolt is provided on the bottom end face of the locking ring.
[0011] Furthermore, the locking ring includes two C-shaped semi-rings, and the two C-shaped semi-rings are connected by locking bolts.
[0012] Furthermore, the support plate is provided with two weight reduction holes, and the two weight reduction holes are located on both sides of the assembly hole.
[0013] Furthermore, the smart classroom demonstration aid also includes an anti-slip sleeve, which is positioned between the locking ring and the lens of the image acquisition device.
[0014] Furthermore, the bearing shaft is provided with a battery compartment, and inside the battery compartment is a storage battery for providing power to the fill light strip.
[0015] Compared with existing technologies, the smart classroom demonstration aid device described in this utility model has the following advantages:
[0016] (1) The present invention provides a demonstration auxiliary device for smart classrooms, wherein the carrier plate is mounted on the lens of an image acquisition device via a connecting sleeve and a locking ring, and supplementary lighting components are provided on both sides of the carrier plate. When the position of the image acquisition device is adjusted, since this device is mounted on the image acquisition device, it can ensure that the light emitted by the supplementary lighting components accurately illuminates the shooting area of the image acquisition device, thereby avoiding blind spots in lighting. Secondly, one end of the support frame in this device is slidably set inside the receiving hole on the carrier plate. Therefore, in actual use, the user can drive the support frame to slide according to actual needs, thereby flexibly adjusting the distance between the carrier shaft and the mounting hole, ensuring that the light emitted by the supplementary lighting strip illuminates the edge area of the document, improving the overall brightness of the document material, avoiding overexposure of the text area of the document material, and ensuring the clarity of the document image. In addition, the connecting sleeve in this device is rotatably connected to the carrier plate, and the carrier shaft is rotatably connected to the support frame. The rotation of the carrier plate can drive the supplementary lighting components to adjust their position around the lens, and the rotation of the carrier shaft can adjust the orientation of the supplementary lighting strip, thereby meeting different usage needs.
[0017] (2) The demonstration auxiliary device for smart classrooms described in this utility model has a limiting ring on the connecting sleeve and a limiting groove in the assembly hole. The cooperation of the limiting ring and the limiting groove can axially limit the connecting sleeve and prevent the connecting sleeve from separating from the assembly hole. Secondly, the device has a positioning protrusion on the limiting ring and multiple positioning grooves in the limiting groove. The cooperation of the positioning protrusion and different positioning grooves can make the bearing plate rotate and lock at different positions during rotation. In addition, the device has a connecting ring at the bottom end of the connecting sleeve, which is connected to the bottom end of the locking ring by a connecting bolt, thus preventing relative rotation between the connecting sleeve and the locking ring. Attached Figure Description
[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0019] Figure 1 This is a schematic diagram of the usage state of the smart classroom demonstration auxiliary device described in this embodiment of the utility model (the support frame slides into the receiving hole to its limit position);
[0020] Figure 2 This is a schematic diagram of the usage state of the smart classroom demonstration auxiliary device described in this embodiment of the utility model (the support frame slides to its limit position outside the receiving hole);
[0021] Figure 3 This is a schematic diagram of the top structure of the smart classroom demonstration aid device described in this embodiment of the utility model;
[0022] Figure 4 This is a schematic diagram of the bottom structure of the smart classroom demonstration aid device described in this embodiment of the utility model;
[0023] Figure 5 This is an exploded view of the smart classroom demonstration aid device described in an embodiment of this utility model;
[0024] Figure 6 This is an exploded view of the locking ring described in an embodiment of the present invention;
[0025] Figure 7 This is a schematic diagram of the connecting sleeve according to an embodiment of the present utility model;
[0026] Figure 8 This is a schematic diagram of the structure of the support plate described in an embodiment of the present utility model.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1-Locking ring; 11-C-type semi-ring; 12-Locking bolt; 13-Second connecting screw hole; 2-Bearing plate; 21-Assembly hole; 211-Limiting groove; 212-Positioning groove; 22-Accommodation hole; 23-Weight reduction hole; 3-Connecting sleeve; 31-Limiting ring; 32-Positioning protrusion; 33-Connecting ring; 331-First connecting screw hole; 4-Support frame; 5-Bearing shaft; 51-Supplemental light strip; 52-Battery compartment; 6-Connecting bolt; 7-Anti-slip sleeve; 81-Image acquisition device; 82-Connecting arm; 83-Bearing platform. Detailed Implementation
[0029] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] A demonstration aid device for smart classrooms, the structure of which can be made of Figures 1-8The following is an illustration. In this embodiment, the demonstration auxiliary device for the smart classroom includes: a locking ring 1, a support plate 2, and two supplementary lighting components. The locking ring 1 is detachably fitted onto the lens of the image acquisition device 81. The support plate 2 has an assembly hole 21, and a rotatable connecting sleeve 3 is provided inside the assembly hole 21. The support plate 2 is detachably connected to the locking ring 1 through the connecting sleeve 3. The two supplementary lighting components are arranged in a mirror image on both sides of the support plate 2.
[0034] Typically, a common document camera mainly consists of three parts: an image acquisition device 81, a connecting arm 82, and a support platform 83. The image acquisition device 81 is mounted on the support platform 83 via the connecting arm 82. During use, the user places the object to be demonstrated on the support platform 83 and adjusts the position of the image acquisition device 81 by moving the connecting arm 82. This allows the image acquisition device 81 to capture images of the object, which are then displayed on other playback devices (such as electronic displays or projectors). Since the supplementary lighting component in this device is mounted on the support plate 2, and the support plate 2 is mounted on the lens of the image acquisition device 81 via the locking ring 1 and the connecting sleeve 3, this device can move along with the image acquisition device 81 when its position is adjusted. This ensures that the light generated by the supplementary lighting component illuminates the area captured by the image acquisition device 81, avoiding blind spots in the captured area and improving the image acquisition quality of the image acquisition device 81.
[0035] In addition, since the connecting sleeve 3 is rotatably installed inside the mounting hole 2, during actual use, the user can also drive the carrier plate 2 to rotate according to actual needs, thereby adjusting the position of the supplementary lighting component around the image acquisition device 81, so as to flexibly adjust the light emission position and ensure that the light illumination area matches the actual needs.
[0036] Figure 1 and Figure 2 This is a schematic diagram of the device in use. Figure 5 The exploded view of this device is shown in the figure. In this embodiment, each supplementary lighting component includes a support frame 4 and a bearing shaft 5, and a supplementary lighting strip 51 is provided on the side wall of the bearing shaft 5. To facilitate the assembly between the supplementary lighting component and the bearing plate 2, a receiving hole 22 is provided on the side wall of the bearing plate 2. During assembly, one end of the support frame 4 should be slidably disposed inside the receiving hole 22, and the other end of the support frame 4 should be rotatably connected to the bearing shaft 5, and the axis of the bearing shaft 5 should be perpendicular to the axis of the assembly hole 21.
[0037] During use, the user can adjust the distance between the support shaft 5 and the mounting hole 21 by sliding the support frame 4, so as to move the support shaft 5 to the edge of the object. When the object to be demonstrated is a flat material such as a document, the movement of the support shaft 5 can not only adapt to different document sizes, but also move the support shaft 5 to the edge of the document, and the light emitted by the fill light strip 51 can improve the overall brightness of the document, thereby avoiding overexposure of the text area on the document and ensuring that the captured document image has good clarity. At the same time, since the support shaft 5 is rotatably mounted on the support frame 4, the user can also adjust the orientation of the fill light strip 51 by rotating the support shaft 5, so that the light emitted by the fill light strip 51 forms an angle with the document below, which is convenient for illuminating documents of different sizes.
[0038] As an optional implementation of this embodiment, to ensure that the supplementary lighting strip 51 receives sufficient power, a battery compartment 52 may be provided on the support shaft 5, and a storage battery for providing power to the supplementary lighting strip 51 should be provided inside the battery compartment 52, thereby providing the supplementary lighting strip 51 with the power required for its operation. Correspondingly, those skilled in the art may also add a power interface to the support shaft 5 according to the teachings of the prior art, and provide power to the supplementary lighting strip 51 by plugging in a power cord.
[0039] Figure 6 The exploded view of the locking ring 1 is shown in the figure. To reduce the assembly difficulty between the locking ring 1 and the image acquisition device 81, the locking ring 1 in this embodiment may include two C-shaped semi-rings 11. During assembly, the two C-shaped semi-rings 11 should be arranged with their openings facing each other on both sides of the lens of the image acquisition device 81, and the two C-shaped semi-rings 11 should be connected by locking bolts 12, thereby ensuring that the locking ring 1 is securely installed on the lens of the image acquisition device 81.
[0040] Optionally, since image acquisition devices 81 of different specifications have different lens diameters, the smart classroom demonstration aid device in this embodiment also includes an anti-slip sleeve 7. Before use, the user should select a suitable anti-slip sleeve 7 according to the diameter of the lens of the image acquisition device 81, and place the anti-slip sleeve 7 between the locking ring 1 and the lens of the image acquisition device 81. This improves the adaptability of the device to image acquisition devices 81 of different specifications, and the anti-slip sleeve 7 increases the frictional resistance between the locking ring 1 and the outer wall of the lens, thereby enhancing the assembly reliability of the device.
[0041] Figure 7 This is a schematic diagram of the connecting sleeve 3. Figure 8The diagram shows the structure of the support plate 2. In this embodiment, a limiting ring 31 may be provided on the outer wall of the connecting sleeve 3, and a limiting groove 211 for accommodating the limiting ring 31 may be provided on the inner wall of the assembly hole 21. When the connecting sleeve 3 enters the assembly hole 21, the limiting ring 31 will enter the limiting groove 211. The cooperation between the limiting ring 31 and the limiting groove 211 can axially limit the connecting sleeve 3, thereby preventing the connecting sleeve 3 from separating from the support plate 2 during use.
[0042] Optionally, since the position of the supplementary lighting component can be adjusted by rotating the support plate 2, a positioning protrusion 32 can be provided on the limiting ring 31 to facilitate locking the support plate 2 after it has rotated. Multiple positioning grooves 212 for accommodating the positioning protrusion 32 can be provided inside the limiting groove 211, and these multiple positioning grooves 212 should be evenly distributed in a ring around the axis of the assembly hole 21. When the support plate 2 rotates to a suitable position, the positioning protrusion 32 will enter a positioning groove 212. At this time, the cooperation between the positioning protrusion 32 and the positioning groove 212 will limit the rotation of the connecting sleeve 3 and the support plate 2, preventing abnormal rotation of the support plate 2.
[0043] Furthermore, to prevent the connecting sleeve 3 from rotating along with the bearing plate 2, this embodiment may also provide a connecting ring 33 at the bottom end of the connecting sleeve 3 with an inner diameter equal to that of the locking ring 1. The connecting ring 33 shall have a first connecting screw hole 331, and a connecting bolt 6 shall be provided inside the first connecting screw hole 331. A second connecting screw hole 13 shall be provided on the bottom end face of the locking ring 1. After the connecting sleeve 3 is fitted onto the outside of the locking ring 1, the user can screw the connecting bolt 6 into the second connecting screw hole 13, thereby adding a circumferential limit between the connecting sleeve 3 and the locking ring 1, preventing the connecting sleeve 3 from rotating relative to the locking ring 1 when the bearing ring 2 rotates.
[0044] As another optional implementation of this embodiment, in order to avoid the image acquisition device 81's operational flexibility being affected by the addition of this device, the support plate 2 may also be provided with two weight-reducing holes 23, and the two weight-reducing holes 23 should be located on both sides of the mounting hole 21 respectively. By providing weight-reducing holes 23, the overall weight of this device can be reduced, so that the connecting arm 82 can drive the image acquisition device 81 to move flexibly.
[0045] The effects of the above solution are explained below:
[0046] This embodiment provides a demonstration aid device for smart classrooms. It can be mounted on the lens of an image acquisition device, allowing it to move and adjust with the device's position to ensure that the light emitted by the device illuminates the image acquisition area, avoiding blind spots. Furthermore, the device features a rotatable support plate, a sliding support frame, and a rotating support shaft. Therefore, users can flexibly adjust the position and orientation of the light source to accommodate objects of different sizes, ensuring that the light illuminates the edges of the object and thus improving the overall brightness around the object, preventing overexposed areas.
[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 demonstration aid device for smart classrooms, characterized in that, include: The package includes a locking ring (1), a support plate (2), and two supplementary lighting components. The locking ring (1) is detachably mounted on the lens of the image acquisition device (81). The support plate (2) has an assembly hole (21) and a rotatable connecting sleeve (3) inside the assembly hole (21). The support plate (2) is detachably connected to the locking ring (1) through the connecting sleeve (3). The two supplementary lighting components are arranged in a mirror image on both sides of the support plate (2). Each supplementary lighting component includes a support frame (4) and a support shaft (5). The support plate (2) has a receiving hole (22) on its side wall. One end of the support frame (4) is slidably disposed inside the receiving hole (22). The other end of the support frame (4) is rotatably connected to the support shaft (5). The axis of the support shaft (5) is perpendicular to the axis of the assembly hole (21). A supplementary lighting strip (51) is provided on the side wall of the support shaft (5).
2. The demonstration aid device for a smart classroom according to claim 1, characterized in that: The outer side wall of the connecting sleeve (3) is provided with a limiting ring (31), and the inner side wall of the assembly hole (21) is provided with a limiting groove (211) for accommodating the limiting ring (31).
3. The demonstration aid device for a smart classroom according to claim 2, characterized in that: The limiting ring (31) is provided with a positioning protrusion (32), and a plurality of positioning grooves (212) for accommodating the positioning protrusion (32) are provided inside the limiting groove (211), and the plurality of positioning grooves (212) are evenly distributed in a ring on the periphery of the axis of the assembly hole (21).
4. The demonstration aid device for a smart classroom according to claim 1, characterized in that: The bottom end of the connecting sleeve (3) is provided with a connecting ring (33), the inner diameter of the connecting ring (33) is equal to the inner diameter of the locking ring (1), a first connecting screw hole (331) is provided on the connecting ring (33), a connecting bolt (6) is provided inside the first connecting screw hole (331), and a second connecting screw hole (13) for accommodating the connecting bolt (6) is provided on the bottom end face of the locking ring (1).
5. The demonstration aid device for a smart classroom according to claim 1, characterized in that: The locking ring (1) includes two C-shaped semi-rings (11), and the two C-shaped semi-rings (11) are connected by locking bolts (12).
6. The demonstration aid device for a smart classroom according to claim 1, characterized in that: The bearing plate (2) is provided with two weight reduction holes (23), and the two weight reduction holes (23) are located on both sides of the assembly hole (21).
7. The demonstration aid device for a smart classroom according to claim 1, characterized in that: The smart classroom demonstration aid also includes an anti-slip sleeve (7), and the anti-slip sleeve (7) is positioned between the locking ring (1) and the lens of the image acquisition device (81).
8. The demonstration aid device for a smart classroom according to claim 1, characterized in that: The bearing shaft (5) is provided with a battery compartment (52), and a storage battery for providing power to the supplementary light strip (51) is provided inside the battery compartment (52).