Capacitive blackboard

Abstract

The utility model relates to electronic equipment technical field provides a kind of electric capacity blackboard, comprising: support section bar, electric capacity screen and blackboard.The front of support section bar is equipped with first connecting area and second connecting area;Electric capacity screen includes: display component and transparent cover plate;Transparent cover plate cover is located in display component, and the edge of the back of transparent cover plate and first connecting area lap joint;Blackboard and electric capacity screen are side by side arrangement, and the edge of the back of blackboard and second connecting area lap joint.The electric capacity blackboard of the utility model, by the front of support section bar is divided into first connecting area and second connecting area, first connecting area and second connecting area are respectively used and transparent cover plate and blackboard lap joint, to provide support to transparent cover plate and blackboard, this design makes the area that the front of support section bar is not covered by transparent cover plate will be covered by blackboard, designer can reduce the black edge width of electric capacity screen edge by minimizing the size of transparent cover plate, it is favorable to improve screen ratio, improve user's use experience.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and in particular to a capacitive blackboard. Background Technology

[0002] In related technologies, capacitive blackboards typically consist of capacitive touchscreens and blackboard screens that are spliced ​​together. The capacitive touchscreen mainly includes a display component for displaying images and a transparent cover (usually capacitive glass). The display component needs to be installed within a frame structure formed by a supporting profile. The transparent cover is placed over the surface of the display component and the supporting profile. The area between the edge of the transparent cover and the display area of ​​the display component forms a black border area where images cannot be displayed. The wide black border reduces the screen-to-body ratio and prevents touch operation, seriously affecting the user experience. Utility Model Content

[0003] This invention provides a capacitive blackboard to solve the problem that the black border of the capacitive screen in existing capacitive blackboards is too wide, reducing the screen ratio and affecting the user experience.

[0004] This utility model provides a capacitive blackboard, comprising: A support profile, wherein the front side of the support profile is provided with a first connection area and a second connection area; A capacitive touchscreen includes a display component and a transparent cover plate; the transparent cover plate covers the display component, and the edge of the back of the transparent cover plate overlaps with the first connection area; A blackboard and a capacitive screen are arranged side by side, with the edge of the back of the blackboard overlapping the second connection area.

[0005] According to the present invention, the end face of the blackboard facing the transparent cover plate and the end face of the transparent cover plate facing the blackboard are attached together, and the front face of the blackboard and the front face of the transparent cover plate are flush.

[0006] According to the capacitor blackboard of this utility model, the first connection area is provided with a groove, and the groove is provided with an adhesive dotting component that is bonded to the transparent cover plate.

[0007] According to the capacitor blackboard of this utility model, there are multiple grooves, which are arranged along the width direction of the supporting profile and are interconnected, and the depths of adjacent grooves are different.

[0008] According to the capacitor blackboard of this utility model, the width of the groove is not less than 3mm and not more than 5mm.

[0009] According to the capacitor blackboard of this utility model, the second connection area is provided with a first positioning groove, and the first positioning groove has a first groove wall and a second groove wall that are vertically connected. The first groove wall abuts against the back of the blackboard, and the second groove wall abuts against the side of the blackboard facing the supporting profile, so that the front of the blackboard and the front of the transparent cover plate are flush.

[0010] According to the capacitor blackboard of this utility model, the blackboard is provided with a second positioning groove on the side facing the supporting profile, and the second positioning groove has a third groove wall and a fourth groove wall that are vertically connected. The third groove wall abuts against the second connecting area, and the fourth groove wall abuts against the side of the supporting profile facing the blackboard, so that the front of the blackboard and the front of the transparent cover plate are flush.

[0011] The capacitive blackboard according to this utility model further includes: a back plate, the back plate being connected to the back of the supporting profile, an installation space being formed between the back plate, the supporting profile and the transparent cover plate, and the display component being disposed within the installation space.

[0012] According to the capacitor blackboard of this utility model, the edge of the back plate is provided with a flange that bends toward the side of the supporting profile facing the blackboard, and a third positioning groove is formed on the side of the supporting profile facing the blackboard. Part of the groove opening of the third positioning groove is located on the back of the supporting profile, and the flange is inserted into the third positioning groove.

[0013] According to the capacitor blackboard of this utility model, the third positioning groove has a fifth groove wall and a sixth groove wall that are perpendicularly connected to each other. The fifth groove wall abuts against the inner side of the flange, and the sixth groove wall abuts against the end of the flange. The thickness of the flange is not greater than the width of the sixth groove wall.

[0014] According to the capacitor blackboard of this utility model, the supporting profile includes two longitudinal beams and two transverse beams. The two longitudinal beams are arranged opposite each other along the width direction of the transparent cover plate, and the two transverse beams are arranged opposite each other along the height direction of the transparent cover plate. The two longitudinal beams and the two transverse beams are connected end to end in sequence to form a profile frame surrounding the transparent cover plate. The front sides of both longitudinal beams are provided with the first connecting area and the second connecting area; the front sides of both transverse beams are provided with the first connecting area.

[0015] This utility model's capacitive blackboard divides the front of the supporting profile into a first connecting area and a second connecting area. The first connecting area and the second connecting area are respectively used to overlap with the transparent cover plate and the blackboard to provide support for the transparent cover plate and the blackboard. This design allows the area on the front of the supporting profile not covered by the transparent cover plate to be covered by the blackboard, which helps designers to minimize the size of the transparent cover plate, thereby reducing the width of the black border and improving the user experience. It effectively solves the problem of wide black borders on the capacitive screen in existing capacitive blackboards, which reduces the screen ratio and affects the user experience. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a partial structural schematic diagram of the capacitor blackboard provided in an embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the support profile provided in an embodiment of the present utility model.

[0019] Figure 3 This is a partial structural schematic diagram of a capacitor blackboard provided in another embodiment of the utility model.

[0020] Figure 4 This is a schematic diagram of the capacitive blackboard provided in an embodiment of the present invention.

[0021] Figure label: 1. Capacitor-operated blackboard; 11. Supporting profile; 111. First connecting area; 112. Second connecting area; 113. Groove; 1131. First groove; 1132. Second groove; 114. First positioning groove; 1141. First groove wall; 1142. Second groove wall; 115. Third positioning groove; 1151. Fifth groove wall; 1152. Sixth groove wall; 116. Longitudinal beam; 117. Crossbeam; 12. Capacitive touchscreen; 121. Display assembly; 122. Transparent cover plate; 13. Blackboard; 131. Second positioning groove; 1311. Third groove wall; 1312. Fourth groove wall; 14. Back panel; 141. Flanged edge. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] The following is combined Figures 1-4 This invention describes a capacitor-based blackboard.

[0024] like Figures 1 to 4 As shown, this utility model provides a capacitive blackboard 1, including: a supporting profile 11, a capacitive screen 12, and a blackboard 13. The front of the supporting profile 11 is provided with a first connecting area 111 and a second connecting area 112; the capacitive screen 12 includes: a display component 121 and a transparent cover plate 122; the transparent cover plate 122 covers the display component 121, and the edge of the back of the transparent cover plate 122 overlaps with the first connecting area 111; the blackboard 13 and the capacitive screen 12 are arranged side by side, and the edge of the back of the blackboard 13 overlaps with the second connecting area 112.

[0025] In this embodiment, the capacitive blackboard 12 and blackboard 13 are arranged side by side for user convenience. The capacitive screen 12 of the capacitive blackboard 1 is used to display images and allows for touch operations by the user, while the blackboard 13 primarily serves as a secondary screen for writing. The capacitive screen 12 includes a display component 121 and a transparent cover plate 122. The display component 121 displays images, and the transparent cover plate 122 provides protection for the display component 121 and allows the user to touch it to input touch commands. Specifically, the transparent cover plate 122 can be capacitive glass.

[0026] The support profile 11 in this embodiment is mainly used to support and fix the transparent cover plate 122 and blackboard 13 of the capacitive screen 12. It should be noted that the front sides of the capacitive blackboard 1, support profile 11, capacitive screen 12, transparent cover plate 122, and blackboard 13 in this application are the sides facing the user when the capacitive blackboard 1 is in normal use; correspondingly, the back sides of the above structures are the sides facing away from the user. The front side of the support profile 11 is divided into a first connecting area 111 and a second connecting area 112. The first connecting area 111 is used to overlap with the edge of the back side of the transparent cover plate 122 to support and fix the transparent cover plate 122, and the second connecting area 112 is used to overlap with the edge of the back side of the blackboard 13.

[0027] In existing technologies, the transparent cover 122 typically needs to completely cover the entire supporting profile 11, resulting in a large size for the transparent cover 122 and a large black border between its edge and the central display area, which affects the user experience. The width of the black border is affected by both the size of the transparent cover 122 and the width of the supporting profile 11. Furthermore, to ensure the structural strength of the supporting profile 11, it is generally difficult to reduce the width of the black border by decreasing the size of the supporting profile 11 and the transparent cover 122.

[0028] In this embodiment, the front of the supporting profile 11 is divided into a first connecting area 111 and a second connecting area 112, which overlap with the transparent cover plate 122 and the blackboard 13 respectively. This allows the area of ​​the supporting profile 11 not covered by the transparent cover plate 122 to be covered by the blackboard 13, thus preventing the area not covered by the transparent cover plate 122 from being exposed and forming a black border. The black border of the capacitive screen 12 is only affected by the distance from the edge of the transparent cover plate 122 to the display area. While ensuring the connection strength between the transparent cover plate 122 and the supporting profile 11, the size of the transparent cover plate 122 can be reduced as much as possible. This reduces the width of the black border seen by the user without adjusting the size of the supporting profile 11, thus improving the user experience.

[0029] The capacitive blackboard 1 of this invention divides the front of the supporting profile 11 into a first connecting area 111 and a second connecting area 112. The first connecting area 111 and the second connecting area 112 are respectively used to overlap with the transparent cover plate 122 and the blackboard 13 to provide support for the transparent cover plate 122 and the blackboard 13. This design allows the area on the front of the supporting profile 11 not covered by the transparent cover plate 122 to be covered by the blackboard 13. This allows designers to minimize the size of the transparent cover plate 122, thereby reducing the width of the black border and improving the user experience. It effectively solves the problem in the prior art that the black border of the capacitive screen in capacitive blackboards is too wide, reducing the screen ratio and affecting the user experience.

[0030] In some embodiments, such as Figure 1 As shown, the end face of the blackboard 13 facing the transparent cover plate 122 is attached to the end face of the transparent cover plate 122 facing the blackboard 13, and the front face of the blackboard 13 is flush with the front face of the transparent cover plate 122.

[0031] In this embodiment, by rationally designing the structure of the supporting profile 11, the transparent cover plate 122, and the blackboard 13, the opposite end faces of the transparent cover plate 122 and the blackboard 13 can be made to fit together, thereby reducing the seam between the transparent cover plate 122 and the blackboard 13, and making the front of the blackboard 13 and the front of the transparent cover plate 122 lie on the same plane and be flush with each other, thus making the flatness and consistency of the entire front of the capacitor blackboard 1 better, more beautiful, and providing a better user experience.

[0032] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the first connection area 111 is provided with a groove 113, and an adhesive dotting component is provided in the groove 113 to be bonded to the transparent cover plate 122.

[0033] In this embodiment, a groove 113 is constructed in the first connection area 111. The groove 113 can extend along the edge of the transparent cover plate 122. Adhesive can be dispensed into the groove 113 to form an adhesive component that bonds to the transparent cover plate 122, thus fixing the transparent cover plate 122. Compared to the existing connection method where the profile wraps around the edge of the capacitor glass, this adhesive-dispensed connection structure does not compromise the flatness of the front surface of the transparent cover plate 122. It also facilitates the alignment of the edges of the blackboard 13 and the transparent cover plate 122, improving the overall flatness of the front surface of the capacitor blackboard 1 and thus enhancing the user experience.

[0034] Alternatively, in some embodiments, such as Figure 2 As shown, there are multiple grooves 113, which are arranged along the width direction of the supporting profile 11 and are interconnected. The depths of adjacent grooves 113 are different. In this embodiment, by arranging multiple sequentially interconnected grooves 113 along the width direction of the supporting profile 11 in the first connection area 111, and making the depths of adjacent grooves 113 different, the grooves 113 of different depths can cooperate with each other. When applying adhesive and pressing the transparent cover plate 122 onto the adhesive layer for bonding, the unformed adhesive can flow from the shallower grooves 113 into the deeper grooves 113, thereby minimizing the overflow of adhesive from the edges of the grooves 113 before it sets, which would affect the aesthetics of the connection between the transparent cover plate 122 and the supporting profile 11.

[0035] Specifically, the groove 113 includes two connected first grooves 1131 and a second groove 1132, with the second groove 1132 located between the two first grooves 1131 and the depth of the second groove 1132 being greater than the depth of the first groove 1131.

[0036] Specifically, in some embodiments, the width of the groove 113 is not less than 3mm and not more than 5mm. This embodiment limits the width of the adhesive layer formed within the groove 113 by limiting the width of the groove 113, thus avoiding the adhesive layer being too narrow and affecting the connection strength between the transparent cover plate 122 and the supporting profile 11, while also avoiding the groove 113 being too wide and affecting the width of the black edge.

[0037] It is understandable that by adjusting the structure of the first connection area 111, the second connection area 112, and the blackboard 13 or the transparent cover plate 122, the blackboard 13 and the transparent cover plate 122 can be made flush, thus improving the overall integrity and appearance of the front of the capacitor blackboard 1.

[0038] In some embodiments, such as Figure 1 and Figure 2 As shown, the second connection area 112 is provided with a first positioning groove 114, the first positioning groove 114 having a first groove wall 1141 and a second groove wall 1142 that are vertically connected; wherein, the first groove wall 1141 abuts against the back of the blackboard 13, and the second groove wall 1142 abuts against the side of the blackboard 13 facing the support profile 11, so that the front of the blackboard 13 is flush with the front of the transparent cover plate 122.

[0039] In this embodiment, the first positioning groove 114 of the second connection area 112 is located at the corner of the supporting profile 11. The first positioning groove 114 has a first groove wall 1141 and a second groove wall 1142 that are perpendicular to each other. The dimensions of the first groove wall 1141 and the second groove wall 1142 can be designed according to the structural dimensions of the blackboard 13 and the transparent cover plate 122. The first groove wall 1141 is used to abut against the back of the blackboard 13 to provide support for the blackboard 13 and to make the front of the blackboard 13 and the transparent cover plate 122 flush with the front. At the same time, the second groove wall 1142 is used to abut against the side wall of the blackboard 13 to position the blackboard 13, so that the blackboard 13 and the transparent cover plate 122 can be as close as possible, thereby reducing the seam between the two and improving the flatness and aesthetics of the front of the capacitor blackboard 1.

[0040] Alternatively, in other embodiments, such as Figure 3 As shown, the blackboard 13 has a second positioning groove 131 on the side facing the support profile 11. The second positioning groove 131 has a third groove wall 1311 and a fourth groove wall 1312 that are vertically connected. The third groove wall 1311 abuts against the second connecting area 112, and the fourth groove wall 1312 abuts against the side of the support profile 11 facing the blackboard 13, so that the front of the blackboard 13 is flush with the front of the transparent cover plate 122.

[0041] In this embodiment, the second connection area 112 is planar, and a second positioning groove 131 is provided at the corner of the blackboard 13. The second positioning groove 131 has a first groove wall 1141 and a fourth groove wall 1312 that are perpendicular to each other. The dimensions of the third groove wall 1311 and the fourth groove wall 1312 can be designed according to the structural dimensions of the blackboard 13 and the transparent cover plate 122. The third groove wall 1311 is used to abut against the second connection area 112 (i.e., the front side of the support profile 11) and make the front side of the blackboard 13 and the transparent cover plate 122 flush with the front side. At the same time, the fourth groove wall 1312 is used to abut against the side wall of the support profile 11 in order to position the blackboard 13 so that the blackboard 13 and the transparent cover plate 122 can be as close as possible, thereby reducing the seam between the two and improving the flatness and aesthetics of the front side of the capacitor blackboard 1.

[0042] Furthermore, in other embodiments, such as Figure 3As shown, the surface of the first connecting area 111 is provided with two parallel raised ribs, and a groove 113 is formed between the raised ribs. The raised ribs abut against the back of the transparent cover plate 122 so that the transparent cover plate 122 and the black plate 13 are flush.

[0043] In some embodiments, such as Figure 1 and Figure 3 As shown, the capacitive blackboard 1 also includes a back plate 14, the back plate 14 and the back of the support profile 11 are connected, an installation space is formed between the back plate 14, the support profile 11 and the transparent cover plate 122, and the display component 121 is disposed in the installation space.

[0044] In this embodiment, by connecting the back plate 14 to the back of the support profile 11, the back plate 14, the support profile 11, and the transparent cover plate 122 can form a relatively enclosed installation space. The display component 121 is installed in the installation space to avoid the display component 121 being completely exposed to the outside, which would cause the display component 121 to come into contact with dust and impurities in the external environment or be damaged by the external environment.

[0045] Alternatively, in some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the edge of the back plate 14 is provided with a flange 141 that bends toward the side of the support profile 11 toward the blackboard 13. A third positioning groove 115 is formed on the side of the support profile 11 toward the blackboard 13. Part of the groove of the third positioning groove 115 is located on the back of the support profile 11, and the flange 141 is inserted into the third positioning groove 115.

[0046] In this embodiment, a flange 141 is constructed at the edge of the back plate 14, bending towards the side of the support profile 11 facing the blackboard 13. The side of the support profile 11 facing the blackboard 13 is provided with a third positioning groove 115 for cooperating with the flange 141. At least a portion of the opening of the third positioning groove 115 extends to the back of the support profile 11, allowing the flange 141 to extend from the back of the support profile 11 into the interior of the third positioning groove 115 and engage with it, so as to position and install the support profile 11 and the back plate 14.

[0047] Specifically, in some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the third positioning groove 115 has a fifth groove wall 1151 and a sixth groove wall 1152 that are perpendicular to each other. The fifth groove wall 1151 abuts against the inner side of the flange 141, and the sixth groove wall 1152 abuts against the end of the flange 141. The thickness of the flange 141 is not greater than the width of the sixth groove wall 1152.

[0048] In this embodiment, the fifth groove wall 1151 of the third positioning groove 115 is parallel to the side wall of the support profile 11 and is used to abut against the inner side of the flange 141 to position the relative position of the flange 141 and the support profile 11 in the width direction of the support profile 11; the sixth groove wall 1152 of the third positioning groove 115 is parallel to the back side of the support profile 11 and is used to abut against the end of the flange 141 to position the relative position of the flange 141 and the support profile 11 in the thickness direction of the support profile 11; at the same time, by making the thickness of the flange 141 no greater than the width of the sixth groove wall 1152, it is avoided that part of the structure of the flange 141 extends beyond the range of the sixth groove wall 1152, forming a protruding structure that protrudes outward relative to the side of the support profile 11 facing the blackboard 13. These protruding structures are prone to interfering with the blackboard 13 and affecting the connection between the blackboard 13 and the support profile 11. Meanwhile, it is understandable that in some application scenarios, it may be necessary to remove the blackboard 13 and use the capacitive screen 12 alone. In this embodiment, the flange 141 is completely housed in the third positioning groove 115 to avoid the flange 141 forming a protrusion on the side of the supporting profile 11 facing the blackboard 13, which would increase the black border outside the display area of ​​the capacitive screen 12 and thus affect the user experience.

[0049] Alternatively, in some embodiments, such as Figure 3 As shown, the thickness of the flange 141 can be equal to the width of the sixth groove wall 1152, so that the outer side of the flange 141 is flush with the side of the support profile 11 facing the blackboard 13.

[0050] In some embodiments, such as Figure 4 As shown, the supporting profile 11 includes two longitudinal beams 116 and two transverse beams 117. The two longitudinal beams 116 are arranged opposite each other along the width direction of the transparent cover plate 122, and the two transverse beams 117 are arranged opposite each other along the height direction of the transparent cover plate 122. The two longitudinal beams 116 and the two transverse beams 117 are connected end to end in sequence to form a profile frame surrounding the transparent cover plate 122. The front of each of the two longitudinal beams 116 is provided with a first connecting area 111 and a second connecting area 112; the front of each of the two transverse beams 117 is provided with a first connecting area 111.

[0051] In this embodiment, both longitudinal beams 116 are beam structures extending along the height direction of the transparent cover plate 122 and are arranged opposite each other along the width direction of the transparent cover plate 122. Each longitudinal beam 116 has a first connecting area 111 to overlap with the two side edges of the transparent cover plate 122 along the width direction. Both transverse beams 117 are beam structures extending along the width direction of the transparent cover plate 122 and are arranged opposite each other along the height direction of the transparent cover plate 122. Each transverse beam 117 has a first connecting area 111 to overlap with the two side edges of the transparent cover plate 122 along the height direction. The longitudinal beams 116 and transverse beams 117 are interconnected to form an integral profile frame, providing support and fixation for the transparent cover plate 122, resulting in better reliability. Furthermore, both longitudinal beams 116 also have second connecting areas 112 to overlap with the blackboards 13 on both sides, respectively.

[0052] It is understandable that by reasonably setting the width of the first connecting area 111 of the longitudinal beam 116 and the width of the first connecting area 111 of the transverse beam 117, the black border widths on the four sides of the capacitive screen 12 can be made equal, further improving the aesthetics of the capacitive screen 12.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A capacitive blackboard, characterized in that, include: A support profile, wherein the front side of the support profile is provided with a first connection area and a second connection area; Capacitive touchscreen, including display components and a transparent cover; The transparent cover plate is disposed on the display component, and the edge of the back of the transparent cover plate overlaps with the first connection area; A blackboard and a capacitive screen are arranged side by side, with the edge of the back of the blackboard overlapping the second connection area.

2. The capacitive blackboard according to claim 1, characterized in that, The end face of the blackboard facing the transparent cover plate and the end face of the transparent cover plate facing the blackboard are attached together, and the front face of the blackboard and the front face of the transparent cover plate are flush.

3. The capacitive blackboard according to claim 1, characterized in that, The first connection area is provided with a groove, and an adhesive dot is provided in the groove to be bonded to the transparent cover plate.

4. The capacitive blackboard according to claim 3, characterized in that, There are multiple grooves, which are arranged along the width direction of the supporting profile and connected in sequence, with adjacent grooves having different depths.

5. The capacitive blackboard according to claim 3, characterized in that, The width of the groove is not less than 3mm and not more than 5mm.

6. The capacitor blackboard according to any one of claims 1 to 5, characterized in that, The second connection area is provided with a first positioning groove, the first positioning groove having a first groove wall and a second groove wall that are vertically connected; The first groove wall abuts against the back of the blackboard, and the second groove wall abuts against the side of the blackboard facing the supporting profile, so that the front of the blackboard and the front of the transparent cover plate are flush.

7. The capacitive blackboard according to any one of claims 1 to 5, characterized in that, The blackboard is provided with a second positioning groove on the side facing the supporting profile, and the second positioning groove has a third groove wall and a fourth groove wall that are vertically connected. The third groove wall abuts against the second connecting area, and the fourth groove wall abuts against the side of the supporting profile facing the blackboard, so that the front of the blackboard and the front of the transparent cover plate are flush.

8. The capacitive blackboard according to claim 1, characterized in that, Also includes: A back panel is connected to the back of the supporting profile, and an installation space is formed between the back panel, the supporting profile, and the transparent cover plate, and the display component is disposed within the installation space.

9. The capacitive blackboard according to claim 8, characterized in that, The edge of the back plate is provided with a flange that bends toward the side of the supporting profile facing the blackboard. The side of the supporting profile facing the blackboard has a third positioning groove. Part of the groove opening is located on the back of the supporting profile, and the flange is inserted into the third positioning groove.

10. The capacitive blackboard according to claim 9, characterized in that, The third positioning groove has a fifth groove wall and a sixth groove wall that are perpendicularly connected to each other. The fifth groove wall abuts against the inner side of the flange, and the sixth groove wall abuts against the end of the flange. The thickness of the flange is not greater than the width of the sixth groove wall.

11. The capacitive blackboard according to claim 1, characterized in that, The supporting profile includes two longitudinal beams and two transverse beams. The two longitudinal beams are arranged opposite each other along the width direction of the transparent cover plate, and the two transverse beams are arranged opposite each other along the height direction of the transparent cover plate. The two longitudinal beams and the two transverse beams are connected end to end in sequence to form a profile frame surrounding the transparent cover plate. The two longitudinal beams each have a first connecting area and a second connecting area on their front sides; the two transverse beams each have a first connecting area on their front sides.

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