Electronic whiteboard

Abstract

The present disclosure relates to the technical field of display, and provides an electronic whiteboard. The electronic whiteboard comprises: a display module, comprising a display panel and a backplate, wherein the backplate covers the backlight side of the display panel, the periphery of the backplate comprises a first sidewall, and a preset included angle is formed between the first sidewall and the display panel; a bezel, fixedly connected to the periphery of the display module, wherein the bezel comprises a first bezel opposite to the first sidewall; a rear shell, which at least partially covers the first sidewall and the first bezel, so that the rear shell, the first sidewall and the first bezel together define an accommodating space; a touch assembly, mounted inside the bezel and surrounding the display module; and a control board, mounted in the accommodating space and electrically connected to the touch assembly. The structure of the electronic whiteboard is more compact.

Description

electronic whiteboard

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202410139710.6, filed with the China Patent Office on January 31, 2024, and entitled “Electronic Whiteboard,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the field of display technology, and in particular to an electronic whiteboard. Background Art

[0004] Electronic whiteboards are a new type of product that can display images and interact with users. Users can write directly on an electronic whiteboard, just like on a regular whiteboard or blackboard, enabling paperless office and teaching. However, existing electronic whiteboards are bulky, making them difficult to make thinner and lighter. Summary of the Invention

[0005] The embodiments of the present disclosure provide an electronic whiteboard with a more compact structure.

[0006] To achieve the above objectives, the embodiments of the present disclosure adopt the following technical solutions:

[0007] In one aspect, an electronic whiteboard is provided, comprising:

[0008] A display module comprising a display panel and a back plate, wherein the back plate cover is provided on a side of the backlight assembly away from the display panel, and the periphery of the back plate comprises a first side wall, and the first side wall forms a preset angle with the display panel;

[0009] a frame fixedly connected to a periphery of the display module, the frame comprising a first frame opposite to the first side wall;

[0010] a rear shell at least partially covering the first side wall and the first frame, so that the rear shell, the first side wall and the first frame together form an accommodating space;

[0011] A touch control component is installed inside the frame;

[0012] The control board is installed in the accommodating space and is electrically connected to the touch component.

[0013] In some embodiments, the electronic whiteboard further includes a bracket, one end of the bracket is connected to the back panel, the other end of the bracket is connected to the first frame, and the control board is fixedly connected to the bracket.

[0014] In some embodiments, the control board is fixedly connected to a side of the bracket away from the display panel.

[0015] In some embodiments, the control board includes a front side and a back side disposed opposite to each other, the front side is provided with a connector, the control board is electrically connected to the touch control component via the connector, and the front side faces the display panel.

[0016] In some embodiments, a region of the bracket facing the connector is hollowed out.

[0017] In some embodiments, the bracket includes a first connecting wall, a mounting wall, a support wall, and a second connecting wall connected in sequence, the first connecting wall is connected to the back panel, the second connecting wall is connected to the first frame, the control board is installed on the mounting wall, and the support wall separates the mounting wall from the first frame.

[0018] In some embodiments, the electronic whiteboard further includes a main board, the control board includes a first connector electrically connected to the touch component and a second connector electrically connected to the main board, and the first connector and the second connector are arranged at intervals along the extension direction of the first frame.

[0019] In some embodiments, the included angle between the control plate and the first side wall is α, 40°≤α≤50°.

[0020] In some embodiments, the electronic whiteboard further includes a signal line, the touch component includes a connection port, one end of the signal line is electrically connected to the connection port, and the other end of the signal line is electrically connected to the control board, and the control board is arranged adjacent to the connection port.

[0021] In some embodiments, the length of the signal line is less than or equal to 450 mm.

[0022] In some embodiments, the frame further includes a second frame connected to the first frame, and the connection port is adjacent to a connection area between the first frame and the second frame.

[0023] In some embodiments, the touch component includes a sending component and a receiving component, the connection port includes a first port set in the sending component and a second port set in the receiving component, one of the first port and the second port is set in the first frame, and the other is set in the second frame.

[0024] In some embodiments, a cavity is provided inside the first frame, and part of the structure of the sending component and the first port are arranged in the cavity. A hollow area is provided on the side wall of the first frame facing the display panel, and a hollow area is provided in the area opposite to the first port. The signal line includes a first signal line, one end of the first signal line is electrically connected to the control board, and the other end of the first signal line passes through the hollow area into the cavity and is electrically connected to the first port.

[0025] In some embodiments, the receiving component and the second port are arranged in the second frame, the side wall of the first frame facing the rear shell is provided with an avoidance groove, the signal line includes a second signal line, one end of the second signal line is electrically connected to the control board, the second end of the second signal line is electrically connected to the second port, and the second signal line between the first end and the second end extends along the first frame and passes through the avoidance groove.

[0026] In some embodiments, the electronic whiteboard further includes a front board assembly connected to the first frame, and the control board is installed on a side of the front board assembly away from the corner area.

[0027] In some embodiments, with the electronic whiteboard facing the user as a reference, the frame includes an upper frame, a lower frame, a left frame, and a right frame, and the first frame is the lower frame.

[0028] In another aspect, an electronic whiteboard is provided, comprising:

[0029] A display module comprising a display panel and a back plate, wherein the back plate cover is provided on a side of the backlight assembly away from the display panel, and the periphery of the back plate comprises a first side wall, and the first side wall forms a preset angle with the display panel;

[0030] a frame fixedly connected to a periphery of the display module, the frame comprising a first frame opposite to the first side wall;

[0031] A touch control component is installed inside the frame;

[0032] a bracket, one end of which is connected to the back plate and the other end of which is connected to the first frame;

[0033] A control board is mounted on the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] FIG1 is a diagram of an application scenario of an electronic whiteboard provided by an embodiment of the present disclosure;

[0036] FIG2 is a front view of an electronic whiteboard provided in an embodiment of the present disclosure;

[0037] FIG3 is an exploded view of an electronic whiteboard provided in an embodiment of the present disclosure;

[0038] FIG4 is a rear view of the area corresponding to the lower left corner of the electronic whiteboard in FIG2 ;

[0039] FIG5 is a cross-sectional view of FIG4 taken along line BB;

[0040] FIG6 is a cross-sectional view of FIG2 taken along line AA;

[0041] FIG7 is another cross-sectional view of FIG2 along the line AA;

[0042] FIG8 is another cross-sectional view of BB in FIG4 ;

[0043] FIG9 is a first schematic diagram of the control panel and the bracket connected in accordance with an embodiment of the present disclosure;

[0044] FIG10 is a second schematic diagram of the control panel and the bracket connected in accordance with the present disclosure;

[0045] FIG11 is a schematic diagram of the process of connecting the control board and the bracket according to an embodiment of the present disclosure;

[0046] FIG12 is a partial structural exploded view of an electronic whiteboard according to an embodiment of the present disclosure;

[0047] FIG13 is a partial enlarged view of point I in FIG12;

[0048] FIG14 is another cross-sectional view of BB in FIG4 ;

[0049] FIG15 is a partial structural exploded view of an electronic whiteboard according to an embodiment of the present disclosure;

[0050] FIG16 is a schematic diagram of the first frame;

[0051] FIG17 is a partial enlarged view of point II in FIG16;

[0052] FIG18 is a cross-sectional view of the first frame and the transmitting assembly after assembly;

[0053] FIG19 is a schematic diagram of the second frame;

[0054] FIG20 is a partial enlarged view of point III in FIG19;

[0055] FIG21 is a cross-sectional view of the second frame and the receiving assembly after assembly;

[0056] FIG22 is a partial structural exploded view of an electronic whiteboard in an embodiment of the present disclosure;

[0057] FIG23 is a schematic diagram of a partial structure of an electronic whiteboard according to an embodiment of the present disclosure;

[0058] FIG24 is a partial enlarged view of point VII in FIG23;

[0059] FIG25 is a schematic diagram of a partial structure of an electronic whiteboard in an embodiment of the present disclosure. Specific embodiments

[0060] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0061] In the embodiments of the present disclosure, words such as "first", "second", "third", and "fourth" are used to distinguish between identical or similar items with substantially the same functions and effects. This is only for the purpose of clearly describing the technical solutions of the embodiments of the present disclosure, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0062] In the embodiments of the present disclosure, “a plurality of” means two or more, and “at least one” means one or more, unless otherwise clearly and specifically defined.

[0063] In the embodiments of the present disclosure, the orientations or positional relationships indicated by terms such as “upper” and “lower” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present disclosure and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present disclosure.

[0064] The present disclosure provides an electronic whiteboard that can be used in a variety of scenarios, such as meetings and teaching, to display images and interact with users. Figure 1 illustrates an application scenario for an electronic whiteboard provided by the present disclosure. As shown in Figure 1, an electronic whiteboard 100 can be used in a conference room to display the content being discussed.

[0065] FIG2 is a front view of an electronic whiteboard provided by an embodiment of the present disclosure. As shown in FIG2 , the electronic whiteboard 100 includes a display module 10, which can display images, whether moving (e.g., video) or fixed (e.g., still images), and whether text or pictures. For example, when the electronic whiteboard 100 is used in a conference scenario, the display module 10 can display slides, meeting minutes, etc. When the electronic whiteboard 100 is used in a teaching scenario, the display module 10 can display text, demonstration animations, etc.

[0066] The display module 10 includes a display panel. The display panel may be a liquid crystal display panel (LCD); the display panel may also be an electroluminescent display panel or a photoluminescent display panel. In the case where the display panel is an electroluminescent display panel, the electroluminescent display panel may be an organic light-emitting diode (OLED) display panel or a quantum dot light-emitting diode (QLED) display panel or a micro light-emitting diode (Micro LED), etc. In the case where the display panel is a photoluminescent display panel, the photoluminescent display panel may be a quantum dot photoluminescent display panel. The embodiments of the present disclosure are described by taking the display panel as a liquid crystal display panel as an example.

[0067] FIG3 is an exploded view of an electronic whiteboard provided in an embodiment of the present disclosure. As shown in FIG2 and FIG3, the display module 10 may include a display panel 12 and a backlight assembly. The display panel 12 includes a light-emitting surface for displaying an image and a backlight surface opposite to the light-emitting surface. The backlight assembly is connected to the backlight surface of the display panel 12. The backlight assembly includes a backlight plate (not shown in the figure) and a backplate 13. The backlight plate is connected to the backlight surface of the display panel 12 to provide a light source for the display panel 12. The backplate 13 is provided on the side of the backlight plate away from the display panel 12 to protect the backlight plate.

[0068] The back plate 13 can be made of a metal sheet such as aluminum alloy, stainless steel, galvanized steel plate, etc. through a stamping process. The surface of the back plate 13 is provided with a concave-convex shape to increase the rigidity of the back plate 13 to protect the backlight plate and the display panel 12.

[0069] Figure 4 is a rear view of the area corresponding to the lower left corner of the electronic whiteboard in Figure 2, and Figure 5 is a cross-sectional view of the BB in Figure 4. As shown in Figures 4 and 5, the back panel 13 can include a bottom wall 132 and a first side wall. The bottom wall 132 is located on the side of the backlight panel away from the display panel 12, and the first side wall 131 is connected to the periphery of the bottom wall 132 and fixedly connected to the periphery of the backlight panel, so that the back panel 13 as a whole has a basin shape that is concave toward the direction away from the display panel 12.

[0070] Continuing with Figure 5 , the first sidewall 131 forms a predetermined angle β with the display panel 12, such that the back panel 13 and the display panel 12 enclose a space for mounting the backlight panel. The present disclosure does not limit the specific value of the predetermined angle β, and may include, for example, 90°, 80°, 60°, 45°, or 30°.

[0071] Continuing with reference to FIG3 , in actual use, the electronic whiteboard 100 may further include a board assembly 70, which may be connected to a side of the back panel 13 away from the display panel 12. The board assembly 70 may include the main board of the electronic whiteboard 100, the main control board of the display panel 12, and may also include a network cable interface, a video input interface, a video output interface, a USB interface, and the like.

[0072] Continuing to refer to Figure 3, in actual application, the display module 10 may further include a cover plate 11, which is connected to the light-emitting surface of the display panel 12 to protect the display panel 12. The cover plate 11 can be a rigid cover plate or a flexible cover plate, and can be a single-layer structure or a multi-layer structure formed by stacking multiple film layers. When the display module 10 is a flexible display module, the cover plate 11 can be a flexible cover plate. For example, when the cover plate is a single-layer structure, the cover plate 11 can be a glass cover plate with a relatively thin thickness, or a single-layer transparent polymer layer such as a single layer of PI or a single layer of PET; when the cover plate is a multi-layer structure, in the direction away from the substrate, the cover plate 11 includes a first organic layer, an ultra-thin glass layer, and a second organic layer stacked in sequence, wherein the adjacent layers are optically bonded, and the first organic layer and the second organic layer are transparent organic materials. When the display module 10 is a rigid display module, the cover plate 11 can be a rigid cover plate, such as a relatively thick glass.

[0073] 2 and 3 , the electronic whiteboard 100 further includes a frame 20 . The frame 20 is fixedly connected to the periphery of the display module 10 to support and protect the display module 10 .

[0074] Exemplarily, the frame 20 is rectangular as a whole. Taking the electronic whiteboard 100 facing the user as a reference, the frame may include an upper frame, a lower frame, a left frame and a right frame. The upper frame is connected to the upper edge of the display module 10, the lower frame is connected to the lower edge of the display module 10, the left frame is connected to the left edge of the display module 10, and the right frame is connected to the right edge of the display module 10.

[0075] In actual application, the upper frame, lower frame, left frame, and right frame can be made of elongated profiles (e.g., aluminum profiles) and connected end to end to form the frame 20. The cross-sections of the upper frame, lower frame, left frame, and right frame can be the same or different. For example, the cross-section of the lower frame is larger than the cross-sections of other parts of the frame 20 to facilitate the installation of various signal interfaces, such as the front USB interface, on the lower frame.

[0076] Continuing with Figure 5 , the portion of the frame 20 disposed opposite the first sidewall 131 is the first frame 21. The phrase "oppositely disposed" here means that the first sidewall 131 and the first frame 21 are disposed adjacent to each other and extend in substantially the same direction. For example, when the first frame 21 is the lower frame, the first frame 21 extends in the horizontal direction in Figure 2 , and the first sidewall 131 is the sidewall of the back panel 13 adjacent to the lower frame, and the first sidewall 131 extends substantially in the horizontal direction in Figure 2 .

[0077] 4 and 5 , the electronic whiteboard 100 may further include a rear housing 40, which is located on the back of the electronic whiteboard 100 and is used to protect components covered by the rear housing 40. The rear housing 40 may be an integral structure or may be composed of multiple parts.

[0078] Exemplarily, as shown in FIG. 4 , the rear housing 40 includes a first sub-housing 40 a and a second sub-housing 40 b . The first sub-housing 40 a covers the lower left corner of the electronic whiteboard 100 , and the second sub-housing 40 b covers the lower edge of the electronic whiteboard 100 .

[0079] 5 , the rear shell 40 at least partially covers the first side wall 131 and the first frame 21 , so that the rear shell 40 , the first side wall 131 and the first frame 21 together form an accommodating space 1 (the inverted trapezoidal area indicated by arrow 1 in FIG5 ).

[0080] Exemplarily, the cross-section of the rear housing 40 is L-shaped and includes a first wall 41 and a second wall 42. The first wall 41 is connected to the first frame 21, and the second wall 42 is connected to the back plate 13. For example, the first wall 41 is connected to the first frame 21 by screws, and the second wall 42 is connected to the back plate 13 by screws.

[0081] It should be noted that the embodiment of the present disclosure does not limit the shape of the accommodating space 1. It can be an inverted trapezoid as shown in FIG. 5 or other shapes. The shape of the accommodating space 1 is related to the shape of the back plate 13 and the shape of the rear housing 40. For example, when the first side wall 131 of the back plate 13 and the display panel 12 form a right angle with the predetermined angle β, and the cross-section of the rear housing 40 is L-shaped, the rear housing 40, the first side wall 131, and the first frame 21 together enclose a substantially rectangular accommodating space 1.

[0082] In actual application, the rear shell 40 can be made of metal plates such as aluminum alloy, stainless steel, galvanized steel plate, etc. through a stamping process.

[0083] Continuing with Figure 3, to enable user interaction between the electronic whiteboard 100 and the display module 100, the electronic whiteboard 100 further includes a touch control assembly 30. The touch control assembly 30 can identify user touch operations on the display module 10, such as identifying the user's touch position and touch duration. In the disclosed embodiments, an infrared touch control assembly 30 is used as an example. When the touch control assembly 30 is an infrared touch control assembly, the touch control assembly 30 includes both direct and reflective structures.

[0084] Figure 6 is a cross-sectional view of AA in Figure 2. Figure 6 shows that the touch component 30 is a direct-type structure, and the straight line with an arrow in Figure 6 represents infrared light. As shown in Figure 6, the touch component 30 includes a sending component 31 and a receiving component 32. The sending component 31 and the receiving component 32 are both arranged in the frame 20, and the sending component 31 and the receiving component 32 are arranged relative to each other. When working, the sending component 31 emits infrared light, which is received by the receiving component 32 after propagating along the side of the outgoing light of the cover 11. When the user's finger or stylus is placed in the propagation path of the infrared light, the infrared light is blocked, and the receiving component 32 cannot receive the infrared light, thereby recognizing the user's touch operation. In actual application, an optical lens 33 can also be provided on the frame 20, and the optical lens 33 is located in the propagation path of the infrared light.

[0085] For example, the transmitting component 31 includes multiple infrared lamp beads arranged at intervals along one side of the display module 10. Correspondingly, the receiving component 32 includes multiple infrared sensors arranged at intervals along the opposite side of the display module 10, with each infrared lamp bead corresponding to each infrared sensor. The location of the touch operation is determined based on the location of the infrared sensor that cannot receive infrared light.

[0086] Continuing to refer to Figure 6, the infrared lamp beads and infrared sensors of the direct touch component are both located on one side of the outgoing light of the cover plate 11. Since the infrared lamp beads and the infrared sensor have a certain volume, the gap between the infrared light and the cover plate 11 is large. When the user's finger or stylus does not touch the cover plate 11, the receiving component 32 has already recognized the touch operation and made feedback, resulting in a poor touch experience for the user.

[0087] To address the above-mentioned issues, a reflective touch assembly is proposed. FIG7 is another cross-sectional view of FIG2 along line AA. FIG7 shows that the touch assembly 30 is a reflective structure. The arrowed line in FIG7 represents infrared light. As shown in FIG7 , the touch assembly 30 may further include a reflective lens 34. The transmitting assembly 31 transmits infrared light toward the reflective lens 34 in a direction perpendicular to the cover plate 11. The infrared light is reflected by the reflective lens 34 and propagates along the side of the outgoing light of the cover plate 11. It is reflected by the reflective lens 34 disposed opposite to the receiving assembly 32 and is received by the receiving assembly 32. As can be seen from FIG5 , the transmitting assembly 31 and the receiving assembly 32 can be located on the side of the cover plate 11 facing the display panel, that is, the infrared lamp beads and the infrared sensor are located on the side of the cover plate 11 facing the display panel. The position of the reflective lens 34 can be adjusted to bring the infrared light closer to the cover plate 11, thereby improving the user's touch experience.

[0088] 7 , an optical amplifying film 35 may be provided in the propagation path of the infrared light. For example, an optical amplifying film 35 may be provided on the side close to the transmitting component 31 and on the side close to the receiving component 32.

[0089] When the touch component 30 is a direct touch component, it can be directly electrically connected to the mainboard of the electronic whiteboard 100 via a signal line to transmit touch signals via the transmission line. When the touch component 30 is a reflective touch component, because the touch recognition method of reflective touch components is more complex, the electronic whiteboard 100 also includes a control board, which is electrically connected to the touch component 30 via a signal line and is also electrically connected to the mainboard of the electronic whiteboard 100, thereby increasing the computing power of touch operation recognition and reducing the delay of touch operation recognition.

[0090] Figure 8 is another cross-sectional view taken along line BB in Figure 4 . As shown in Figure 8 , control board 51 is installed within accommodation space 1 . Mounting control board 51 within accommodation space 1 eliminates the need for a separate installation space specifically for control board 51, making electronic whiteboard 100 more compact and reducing its size.

[0091] Continuing with reference to Figures 5 and 8 , the first frame 21 includes a first surface 21a facing away from the light-emitting surface of the display module 10. The angle formed between the first wall 41 and the first surface 21a is a first angle A1. The angle formed between the second wall 42 and the first sidewall 131 is a second angle A2. The control board 51 is disposed along the diagonal line (dashed line in Figure 5 ) between the first angle A1 and the second angle A2. It should be noted that the control board is not shown in Figure 5 to facilitate the display of the accommodating space 1.

[0092] The control panel 51 is arranged along the diagonal line, which means that the extension direction of the plane where the control panel 51 is located is substantially the same as the extension direction of the diagonal line, and they may completely overlap or form a small angle.

[0093] Within the accommodating space 1, the diagonal lengths of the first corner A1 and the second corner A2 are relatively long. The control board 51 is positioned along these diagonals, making full use of the space within the accommodating space 1. This allows for a larger control board 51 to be placed within the same accommodating space 1, thereby increasing the space available for arranging the various components within the control board 51. Furthermore, the diagonal placement of the control board 51 reduces the likelihood of interference between the control board 51 and the rear housing 40, back panel 13, and first frame 21 due to dimensional errors.

[0094] The included angle between the control panel 51 and the first side wall 131 is α, and the value range of α can be: 40°≤α≤50°. For example, α is 45°, which can fully utilize the accommodating space 1.

[0095] Continuing with Figure 8 , the electronic whiteboard 100 may further include a bracket 52 to which the control board 51 may be connected, thereby securing the control board 51. One end of the bracket 52 may be connected to the back panel 13, and the other end of the bracket 52 may be connected to the first frame 21. In other words, the bracket 52 connects both the back panel 13 and the frame 20. The bracket 52 simultaneously secures the control board 51 and strengthens the structural strength of the electronic whiteboard 100.

[0096] The bracket 52 can be made of metal plates such as aluminum alloy, stainless steel, galvanized steel plate, etc. through a stamping process.

[0097] Figure 9 is a schematic diagram of the control board and bracket after being connected in accordance with an embodiment of the present disclosure. Figure 10 is a schematic diagram of the control board and bracket after being connected in accordance with an embodiment of the present disclosure. Figure 11 is a schematic diagram of the process of connecting the control board and bracket in accordance with an embodiment of the present disclosure. For example, as shown in Figures 9 to 11, the control board 51 and bracket 52 are fixedly connected by first screws 522. The bracket 52 is provided with a plurality of through holes 524, and the bracket 52 is screwed to the back panel 13 or the first frame 21 through the plurality of through holes 524.

[0098] For example, continuing to refer to Figure 11, the bracket can also include a second connecting wall 523 and an avoidance hole 521 arranged opposite to the second connecting wall 523. When installing the bracket 52, the screw can be passed through the avoidance hole 521 and connected to the second connecting wall 523, thereby facilitating the installation of the bracket 52.

[0099] FIG12 is a partial structural exploded view of an electronic whiteboard according to an embodiment of the present disclosure, and FIG13 is a partial enlarged view of point I in FIG12 . For example, as shown in FIG12 and FIG13 , the bracket 52 is further provided with a positioning hole 525, and the back panel 13 is provided with a positioning post 133. The positioning hole 525 and the positioning post 133 cooperate to achieve quick positioning of the bracket 52, making installation more convenient. The first frame 21 is provided with a second threaded hole 213, and the second screw 526 passes through the avoidance hole 521 and connects with the second threaded hole 213, thereby connecting the connecting wall 523 and the first frame 21. The second screw 526 also passes through the through hole 524 and is threadedly connected to the first threaded hole 132 on the back panel 13.

[0100] Continuing with FIG11 , the bracket 52 may include a first connecting wall 501, a mounting wall 502, a supporting wall 503, and a second connecting wall 523, which are connected in sequence. The first connecting wall 501 is connected to the back panel 13, the second connecting wall 523 is connected to the first frame 21, the control board 51 is mounted on the mounting wall 502, and the supporting wall 503 separates the mounting wall 502 from the first frame 21. The supporting wall 503 separates the mounting wall 502 from the first frame 21, facilitating the connection between the bracket 52 and the first frame 21.

[0101] The control board 51 can be connected to the side of the bracket 52 facing the display panel 12, or it can be connected to the side of the bracket 52 away from the display panel 12. When the control board 51 is connected to the side of the bracket 52 away from the display panel 12, the internal space of the accommodating space 1 can be fully utilized.

[0102] The control board 51 includes a front and back surface, with connectors and other electronic components soldered to the front surface. The control board 51 is electrically connected to the touch control assembly 30 via the connector. For example, the control board 51 is a printed circuit board (PCB). The front surface of the PCB is marked with patterns, letters, numbers, and other markings, also known as the "solder mask" or "surface mount (SMT) surface." Its function is to shield areas that do not require soldering and provide protection against oxidation and short circuits. The back surface of the PCB is called the "non-solder mask" or "plug-in surface," and its primary function is to provide connection circuits.

[0103] Figure 14 is another cross-sectional view along line BB in Figure 4 . As shown in Figure 14 , the back of the control board 51 can face the light-emitting surface of the display module 10. In this case, the connectors and other electronic components connected to the control board 51 face the rear housing 40, making them susceptible to interference with the rear housing 40 and increasing the risk of damage. For example, in Figure 12 , the electronic components on the control board 51 interfere with the rear housing 40 at locations c1 and c2.

[0104] Therefore, the front surface of the control board 51 can face the light-emitting surface of the display module 10 to prevent the connectors and electronic components on the control board 51 from interfering with the rear housing 40 .

[0105] Continuing with reference to Figure 10, the control board 51 includes a first connector 511 electrically connected to the touch component 30 and a second connector 512 electrically connected to the main board of the electronic whiteboard 100. The first connector 511 and the second connector 512 are arranged at intervals along the extension direction of the first frame 21, so that the distance between the first connector 511 and the second connector 512 is large, which facilitates the electrical connection between the control board 51 and the main board and the touch component 30.

[0106] The orthographic projection of the bracket 52 on the control board 51 is located between the first connector 511 and the second connector 5112 , that is, the area of ​​the bracket 52 opposite to the first connector 511 and the second connector 512 is hollowed out to facilitate the connection of the signal line with the first connector 511 and the second connector 512 .

[0107] Exemplarily, as shown in FIG10 , the bracket 52 is in a “Z” shape as a whole, with the upper and lower ends of the bracket 52 connected to the back plate 13 and the first frame 21 respectively, and the middle area of ​​the bracket 52 connected to the control board 51 .

[0108] Of course, in addition to the bracket 52, the control board 51 can also be fixed by other means, for example, the control board 51 is directly connected to the back panel 13 and the first frame 21 with screws, or the control board 51 is connected to the back panel 13 and / or the first frame 21 through adhesive tape.

[0109] The touch component 30 includes a connection port, one end of the signal line is electrically connected to the connection port, and the other end of the signal line is electrically connected to the control board 51. In order to reduce the attenuation of signal strength during signal transmission between the touch component 30 and the control board 51, the control board 51 can be set adjacent to the connection port, thereby reducing the length of the signal line between the connection port and the control board 51.

[0110] Exemplarily, the length of the signal line is less than or equal to 450 mm.

[0111] FIG15 is a partial exploded view of the structure of an electronic whiteboard according to an embodiment of the present disclosure. As shown in FIG15 , the frame 20 further includes a second frame 22 connected to the first frame 21 , and the connecting area between the first frame 21 and the second frame 22 is the corner area of ​​the electronic whiteboard 100 .

[0112] Exemplarily, the first frame 21 is the lower frame, the second frame 22 is the left frame, and the connection area between the first frame 21 and the second frame 22 is the lower left corner area of ​​the electronic whiteboard 100. In this case, the rear cover 40 can cover the lower left corner area of ​​the electronic whiteboard 100.

[0113] The connection port is arranged adjacent to the connection area of ​​the first frame 21 and the second frame 22. The connection port is arranged adjacent to the connection area to facilitate the extraction of signal lines from the connection port. Since the connection port is arranged adjacent to the connection area of ​​the first frame 21 and the second frame 22, and the control board 51 is arranged adjacent to the connection port, that is, the control board 51 is adjacent to the connection area of ​​the first frame 21 and the second frame 22. Among them, the connection port is adjacent to the connection area of ​​the first frame 21 and the second frame 22 means that the distance between the connection port and the connection area of ​​the first frame 21 and the second frame 22 is relatively small. For example, along the extension direction of the first frame 21, the first frame 21 is evenly divided into three parts, and the connection port is arranged in the part of the three parts that is closest to the second frame 22. Similarly, along the extension direction of the second frame 22, the second frame 22 is evenly divided into three parts, and the connection port is arranged in the part of the three parts that is closest to the first frame 21.

[0114] FIG25 is a schematic diagram of a partial structure of an electronic whiteboard according to an embodiment of the present disclosure. As shown in FIG25 , the electronic whiteboard 100 may further include a front-end board assembly 91 connected to the first frame 21 , with the control board 51 mounted on a side of the front-end board assembly 91 away from the corner area to prevent interference between the control board 51 and the front-end board assembly 91 .

[0115] Exemplarily, the front board assembly 91 may be a front USB port.

[0116] Continuing to refer to FIG. 25 , the electronic whiteboard 100 may further include a speaker 92 and a reinforcing rib 93 . The reinforcing rib 93 connects the first frame 21 and the back panel 13 .

[0117] When the touch component 30 is a reflective touch component, the transmitting components 31 are installed on two adjacent sides of the frame 20 , and the receiving components 32 are installed on the other two adjacent sides.

[0118] Exemplarily, the lower frame and the right frame of the frame 20 are installed with a sending component 31, and the sending component 31 in the lower frame is electrically connected to the sending component 31 in the right frame; the upper frame and the left frame of the frame 20 are installed with a receiving component, and the receiving component 32 in the upper frame is electrically connected to the receiving component 32 in the left frame.

[0119] The first frame 21 may be a lower frame, and the second frame 22 may be a left frame.

[0120] Figure 16 is a schematic diagram of the first frame, and Figure 17 is a partial enlarged view of II in Figure 16. As shown in Figures 16 and 17, the connection port includes a first port 311 provided on the sending component 31.

[0121] Exemplarily, the sending component 31 and the first port 311 are located in the first frame 21 .

[0122] Exemplarily, as shown in FIG17 , a cavity is provided in the first frame 21 , the first port 311 is arranged in the cavity, and a hollow area 211 is provided on the side wall of the first frame 21 facing the display panel 12 , and the hollow area 211 is opposite to the first port 311 , thereby facilitating the signal line to pass through the hollow area 211 and be electrically connected to the first port 311 .

[0123] Figure 18 is a cross-sectional view of the assembled first frame and sending assembly. The structure in the circle on the right side of the figure is a partial enlarged view of the structure on the left side about IV. For example, as shown in Figures 17 and 18, a snap-fit ​​groove is provided in the first frame 21, and one side edge of the sending assembly 31 is snapped into the snap-fit ​​groove, thereby locking the sending assembly 31 and making the sending assembly 31 more secure.

[0124] Figure 19 is a schematic diagram of the second frame, and Figure 20 is a partial enlarged view of point III in Figure 19. As shown in Figures 19 and 20, the connection port further includes a second port 321 provided on the receiving component 32.

[0125] Exemplarily, the receiving component 32 and the second port 321 are located in the second frame 22 .

[0126] Figure 21 is a cross-sectional view of the assembled second frame and receiving assembly. The structure within the circle on the right side of the figure is a partial enlarged view of the V portion of the structure on the left side. For example, as shown in Figure 21, a snap-fit ​​groove is provided within the second frame 22, and one side edge of the receiving assembly 32 is snapped into the snap-fit ​​groove, thereby locking the receiving assembly 32 and making it more secure.

[0127] The first port 311 and the second port 321 are both adjacent to the connection area of ​​the first frame 21 and the second frame 22 , which facilitates the connection between the first port 311 and the second port 321 and the signal line.

[0128] Figure 22 is an exploded view of a partial structure of an electronic whiteboard in an embodiment of the present disclosure. For example, as shown in Figure 22, the first frame 21 and the second frame 22 are connected via an adapter 23. The adapter 23 is located in a corner area of ​​the electronic whiteboard 100 and is fixedly connected to the first frame 21 and the second frame 22 respectively via third screws 231.

[0129] Figure 23 is a schematic diagram of a partial structure of an electronic whiteboard according to an embodiment of the present disclosure, and Figure 24 is an enlarged partial view of point VII in Figure 23. As shown in Figures 23 and 24, the signal line includes a first signal line 61, one end of which is electrically connected to the control board 51, and the other end of which passes through the hollow area 211 into the cavity and is electrically connected to the first port 311.

[0130] Figure 24 is a partial enlarged view of point VI in Figure 22. As shown in Figure 24, the signal line further includes a second signal line 62, one end of the second signal line 62 is electrically connected to the control board 51, and the second end of the second signal line 62 is electrically connected to the second port 321.

[0131] A sidewall of the first frame 21 facing the rear housing 13 may be provided with an escape groove 212 , and the second signal line 62 may pass through the escape groove 212 to be electrically connected to the second port 321 .

[0132] For example, the second signal line 62 between the first end and the second end extends along the surface of the first frame 21, thereby facilitating the fixation of the second signal line 62. For example, the second signal line 62 is adhered to the surface of the first frame 21 using double-sided tape to prevent damage to the second signal line 62 or abnormal noise during vibration of the electronic whiteboard 100.

[0133] Of course, the sending component 31 and the first port 311 may also be located in the second frame, and the receiving component 32 and the second port 321 may be provided in the first frame.

[0134] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An electronic whiteboard, characterized in that: include: A display module includes a display panel and a back panel, wherein the back panel cover is provided on the backlight side of the display panel, and the periphery of the back panel includes a first side wall, and the first side wall forms a preset angle with the display panel; a frame fixedly connected to a periphery of the display module, the frame comprising a first frame opposite to the first side wall; a rear shell at least partially covering the first side wall and the first frame, so that the rear shell, the first side wall and the first frame together form an accommodating space; A touch control component is installed inside the frame; The control board is installed in the accommodating space and is electrically connected to the touch component.

2. The electronic whiteboard according to claim 1, wherein: The electronic whiteboard further includes a bracket, one end of the bracket is connected to the backboard, the other end of the bracket is connected to the first frame, and the control board is fixedly connected to the bracket.

3. The electronic whiteboard according to claim 2, wherein: The control board is fixedly connected to a side of the bracket away from the display panel.

4. The electronic whiteboard according to claim 3, wherein: The control board includes a front side and a back side that are arranged opposite to each other. The front side is provided with a connector. The control board is electrically connected to the touch control component via the connector. The front side faces the display panel.

5. The electronic whiteboard according to claim 4, wherein: An area on the bracket facing the connector is hollowed out.

6. The electronic whiteboard according to claim 2, wherein: The bracket includes a first connecting wall, a mounting wall, a supporting wall and a second connecting wall connected in sequence, the first connecting wall is connected to the back plate, the second connecting wall is connected to the first frame, the control board is installed on the mounting wall, and the supporting wall separates the mounting wall from the first frame.

7. The electronic whiteboard according to claim 5, wherein: The electronic whiteboard further includes a main board. The control board includes a first connector electrically connected to the touch component and a second connector electrically connected to the main board. The first connector and the second connector are arranged at intervals along an extension direction of the first frame.

8. The electronic whiteboard according to claim 2, wherein: The included angle between the control plate and the first side wall is α, 40°≤α≤50°.

9. The electronic whiteboard according to any one of claims 1 to 8, wherein: The electronic whiteboard further includes a signal line, the touch assembly includes a connection port, one end of the signal line is electrically connected to the connection port, and the other end of the signal line is electrically connected to the control board.

10. The electronic whiteboard according to claim 9, wherein: The length of the signal line is less than or equal to 450 mm.

11. The electronic whiteboard according to claim 9, wherein: The frame further includes a second frame connected to the first frame, and the connection port is adjacent to a connection area between the first frame and the second frame.

12. The electronic whiteboard according to claim 11, wherein: The touch component includes a sending component and a receiving component, the connection port includes a first port set in the sending component and a second port set in the receiving component, one of the first port and the second port is set in the first frame, and the other is set in the second frame.

13. The electronic whiteboard according to claim 12, wherein: A cavity is provided inside the first frame, and part of the structure of the sending component and the first port are arranged in the cavity. A hollow area is provided on the side wall of the first frame facing the display panel, and the hollow area is opposite to the first port. The signal line includes a first signal line, one end of the first signal line is electrically connected to the control board, and the other end of the first signal line penetrates into the cavity through the hollow area and is electrically connected to the first port.

14. The electronic whiteboard according to claim 12, wherein: The receiving component and the second port are arranged in the second frame, and the side wall of the first frame facing the rear shell is provided with an avoidance groove. The signal line includes a second signal line, one end of the second signal line is electrically connected to the control board, and the second end of the second signal line is electrically connected to the second port. The second signal line between the first end and the second end extends along the first frame and passes through the avoidance groove.

15. The electronic whiteboard according to claim 11, wherein: The electronic whiteboard further includes a front board assembly connected to the first frame, and the control board is installed on a side of the front board assembly away from the corner area.

16. The electronic whiteboard according to claim 1, wherein: The frame includes an upper frame, a lower frame, a left frame, and a right frame, and the first frame is the lower frame.

17. An electronic whiteboard, characterized in that: include: A display module comprising a display panel and a back plate, wherein the back plate cover is provided on a side of the backlight assembly away from the display panel, and the periphery of the back plate comprises a first side wall, and the first side wall forms a preset angle with the display panel; a frame fixedly connected to a periphery of the display module, the frame comprising a first frame opposite to the first side wall; A touch control component is installed inside the frame; a bracket, one end of which is connected to the back plate and the other end of which is connected to the first frame; A control board is mounted on the bracket.

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