Whiteboard installation

Abstract

The present invention provides a whiteboard device. The whiteboard device comprises a whiteboard, a dimming module, a display, a second writing structure, and a control module, wherein the display is located in a groove of the whiteboard; a first writing structure is arranged on one side of the whiteboard, and the first writing structure and the second writing structure are used to provide whiteboard pens for writing; the second writing structure is arranged in front of the display, and when the control module controls the display to start, the dimming module is simultaneously controlled to be transparent, and a user can view the display through the second writing structure and the dimming module; when the control module controls the display to turn off, the dimming module is simultaneously controlled to be opaque, and at this time, the user can write on the second writing structure, and the user can clearly see the handwriting written on the second writing structure.

Description

Technical Field

[0001] The invention relates to a whiteboard, in particular to a multifunctional whiteboard device. Background Art

[0002] The existing whiteboard can only be used for writing with whiteboard pens and has no other functions. Therefore, most teachers or presenters will use multimedia devices such as televisions and projectors to present teaching or report content in a more specific way in the form of videos or animations. However, in the case of small classrooms or venues or limited equipment, teachers or presenters will not be able to use multimedia devices such as televisions and projectors, which causes trouble for teachers or presenters. Summary of the invention

[0003] The invention discloses a whiteboard device, which is mainly used to improve the problem that a teacher or a reporter cannot vividly present the teaching or report content when only a whiteboard is available.

[0004] One embodiment of the present invention discloses a whiteboard device, which includes: a whiteboard, which includes a whiteboard body and a first writing structure, the first writing structure is fixedly arranged on a wide side of the whiteboard body, and the first writing structure is used to provide a whiteboard pen for writing; the whiteboard body is formed by a groove formed by a side of the whiteboard body having the first writing structure; a display is fixedly arranged on the whiteboard, and the display is correspondingly located in the groove, a display surface of the display is correspondingly exposed in the groove, and the display surface is arranged in the direction of the first writing structure; a dimming module is fixedly arranged on the whiteboard; the display surface is located in the positive projection range of the dimming module toward the display; the dimming module can be controlled to switch between a first state and a second state; when the dimming module is in the first state, the user can view the display surface through the dimming module; when the dimming module is in the second state, the dimming module can shield the display surface , so that the user cannot view the display surface; a second writing structure, which is fixedly arranged on the whiteboard, and the second writing structure is located on the side of the dimming module opposite to the display, the second writing structure is transparent, and a wide side of the second writing structure opposite to the dimming module is used to provide whiteboard pen writing; a control module, which is electrically connected to the display and the dimming module; the control module can control the opening and closing of the display; the control module can receive a control signal and control the dimming module to operate, so that the dimming module is converted from the first state to the second state, or the dimming module is converted from the second state to the first state; wherein, when the control module controls the display to start, the control module will simultaneously control the dimming module to operate, so that the dimming module is converted to the first state; wherein, when the control module controls the display to close, the control module will simultaneously control the dimming module to operate, so that the dimming module is converted to the second state.

[0005] Preferably, the first writing structure and the second writing structure are integrally formed; the dimming module includes a polymer dispersed liquid crystal film, which is fixedly arranged on the display surface, or the polymer dispersed liquid crystal film is fixedly arranged on the side of the second writing structure facing the display surface.

[0006] Preferably, the control module includes a wireless receiving unit and a processing unit. The control module is fixedly mounted on the whiteboard. The wireless receiving unit is electrically connected to the processing unit. The wireless receiving unit can receive a control signal transmitted by an external electronic device. The wireless receiving unit can transmit the received control signal to the processing unit, and the processing unit can control the dimming module to operate accordingly based on the control signal.

[0007] Preferably, the second writing structure is atomized glass. When the dimming module is controlled and is in the second state, the side of the second writing structure opposite to the display can be used as a screen for projector projection; the side of the second writing structure opposite to the display is flush with the side of the first writing structure opposite to the whiteboard body.

[0008] Preferably, the whiteboard device also includes a touch module, which is fixedly arranged on the side of the second writing structure facing the display. The touch module is electrically connected to the control module. The control module can generate at least one corresponding touch signal according to the user's operation on the second writing structure. The control module can control the display according to the touch signal so that the display changes the picture content displayed on the display surface.

[0009] Preferably, the display is a touch screen, the second writing structure and the dimming module are attached to the display surface, and the display can display corresponding pictures on the display surface according to the user's operation on the second writing structure.

[0010] Preferably, the control module has a switch unit and a processing unit. The switch unit is fixedly arranged on the whiteboard and electrically connected to the processing unit. The switch unit can transmit a corresponding switching signal to the processing unit according to the user's operation. The processing unit can control the dimming module according to the switching signal to convert the dimming module from the first state to the second state, or convert the dimming module from the second state to the first state.

[0011] Preferably, the second writing structure is detachably fixed to the whiteboard, and when the second writing structure is removed from the whiteboard, the groove can be connected to the outside, and the display can be exposed to the whiteboard through the groove.

[0012] Preferably, the groove runs through the whiteboard body and the first writing structure; the second writing structure is on a side opposite to the display and is flush with a side opposite to the whiteboard body of the first writing structure.

[0013] Preferably, the whiteboard body has at least one wire groove, and at least one electrical port is arranged on the whiteboard body, and the display is connected to the electrical port through at least one electrical connection line, and the electrical connection line is correspondingly arranged in the wire groove. The electrical port is used to provide an electrical connection line for an external electronic device to be plugged in, so that the external electronic device can be electrically connected to the display.

[0014] In summary, the whiteboard device of the present invention includes a display and a dimming module. Therefore, the user can control the dimming module through the control module according to the needs, so as to directly view the display on the whiteboard. When the user does not need to use the display, the area originally used to view the display screen can still be used as the writing area of ​​the whiteboard. Therefore, the whiteboard device of the present invention allows the user to present reports or teaching content in the form of writing on the whiteboard according to their own needs, or can also use the display to present reports or teaching content in a dynamic manner, and the relevant venue does not need to set up additional devices such as televisions.

[0015] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and are not intended to limit the protection scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the whiteboard device of the present invention.

[0017] Figure 2 It is a cross-sectional schematic diagram of the whiteboard device of the present invention.

[0018] Figure 3 Schematic diagram of a whiteboard device according to the present invention.

[0019] Figure 4 FIG. 1 is a schematic diagram of a whiteboard device of the present invention in one usage state.

[0020] Figure 5 FIG. 4 is a schematic diagram of another use state of the whiteboard device of the present invention.

[0021] Figure 6 It is a schematic diagram of the whiteboard device of the present invention being used in conjunction with a projector.

[0022] Figure 7 FIG. 1 is a schematic diagram of a whiteboard device according to an embodiment of the present invention.

[0023] Figure 8 FIG. 4 is a block diagram of a whiteboard device according to an embodiment of the present invention.

[0024] Fig. 9 FIG. 1 is a cross-sectional schematic diagram of an embodiment of a whiteboard device of the present invention. DETAILED DESCRIPTION

[0025] In the following description, if it is indicated to refer to a specific figure or as shown in a specific figure, it is only used to emphasize that most of the related contents described in the subsequent description appear in the specific figure, but it does not limit the subsequent description to only refer to the specific figure.

[0026] Please also read Figures 1 to 5 , Figure 1 It is a three-dimensional schematic diagram of the whiteboard device of the present invention. Figure 2 It is a cross-sectional schematic diagram of the whiteboard device of the present invention, Figure 3 is a schematic block diagram of a whiteboard device of the present invention, Figure 4 A schematic diagram showing one of the usage states of the whiteboard device of the present invention is shown. Figure 5 The schematic diagram of another use state of the whiteboard device of the present invention is shown in FIG.

[0027] like Figure 1 and Figure 2 As shown, the whiteboard 1 includes a whiteboard body 10 and a first writing structure 11. The first writing structure 11 is fixedly arranged on a wide side 101 of the whiteboard body 10, and the first writing structure 11 is used to provide a whiteboard pen for writing. The whiteboard body 10 is formed with a groove 102 formed by a side of the whiteboard body 10 where the first writing structure 11 is arranged. Figure 2 In the figure, the groove 102 is taken as an example to penetrate the whiteboard body 10 and the first writing structure 11, but the form of the groove 102 is not limited to this. In different embodiments, the groove 102 may only penetrate the first writing structure 11 but not penetrate the whiteboard body 10; or the groove 102 may only penetrate the whiteboard body 10 but not penetrate the first writing structure 11. The position of the groove 102 in the whiteboard body 10 may be changed according to needs. In the figure of this embodiment, the groove 102 is roughly located in the center of the whiteboard body 10, but it is not limited to this.

[0028] The whiteboard body 10 referred to here is mainly a component used to support the first writing structure 11. The specific material, appearance, etc. of the whiteboard body 10 are not limited here. The material, appearance, etc. of the first writing structure 11 can also be changed according to needs, as long as the first writing structure 11 opposite to a wide side 111 of the whiteboard body 10 can be used for writing with a whiteboard pen. The way the whiteboard body 10 and the first writing structure 11 are fixed to each other can be changed according to needs, such as bonding, snapping, locking, etc.

[0029] The display 2 is fixedly arranged on the whiteboard body 10, and the display 2 is correspondingly located in the groove 102, and the display surface 21 of the display 2 is arranged in the direction of the first writing structure 11. In practical applications, the display 2 can be connected to an external electronic device (such as a computer, a mobile phone, etc.) to convert the image signal transmitted by the external electronic device into an image to be presented on the display surface 21; or, the display 2 can also have a built-in processor, and the display 2 can present a corresponding image on the display surface 21 according to the signal transmitted by the external input device (such as a keyboard, a mouse, a smart phone, etc.). In other words, the display 2 can be used only to display the image, or the display 2 can also be a smart TV, a computer, etc. with an operating system.

[0030] It is worth mentioning that in the drawings of the present embodiment, the groove 102 is shown as a closed rectangular shape as an example, but the shape and style of the groove 102 are not limited to this. For example, the groove 102 may also be connected to one of the edges of the whiteboard 1, that is, one side of the whiteboard 1 has an opening, and the display 2 may enter the groove 102 through the opening. In special applications, the groove 102 of the whiteboard 1 may also be used to separate the whiteboard 1 into two areas, and the display 2, the dimming module 3 and the second writing structure 4 are correspondingly located between the two areas of the whiteboard 1. The shape of the groove 102 may be designed according to the shape of the display 2. In actual applications, the groove 102 may only expose the display surface 21 of the display 2, while the frame around the display surface 21 is not exposed in the groove 102. In other words, when the user views the display 2 through the second writing structure 4 and the dimming module 3, he will not see the frame structure around the display surface 21.

[0031] It should be noted that at least one wire slot (not shown) may be provided in the whiteboard body 10, and at least one electrical port (such as an HDMI, VGA, etc. port) may be provided in the whiteboard body 10, and the display 2 may be connected to the electrical port via at least one electrical connection line, and the electrical connection line may be correspondingly provided in the wire slot, and the external electronic device may be plugged into the electrical port via the electrical connection line to be electrically connected to the display 2. The type, location and number of the electrical ports may vary according to the requirements, and are not limited thereto. In addition, the control module 5 may also be connected to one of the electrical ports, and the user may be electrically connected to the control module 5 via the electrical port.

[0032] The dimming module 3 is fixedly arranged on the whiteboard 1, and the display surface 21 is located in the positive projection range of the dimming module 3 toward the display 2; that is, the dimming module 3 can be fixed in the groove 102 of the whiteboard 1, and the dimming module 3 is correspondingly located directly above the display surface 21. In practical applications, the dimming module 3 can be directly fixed on the display 2, and the dimming module 3 is fixedly arranged in the groove 102 through the display 2, or the dimming module 3 can be fixedly arranged in the groove 102 independently of the display 2, and there is no limitation here. In special applications, the dimming module 3 can also be integrated with the display 2 into an electronic device.

[0033] The dimming module 3 can be controlled to switch between a first state and a second state. When the dimming module 3 is in the first state, the user can view the display surface 21 through the dimming module 3; when the dimming module 3 is in the second state, the dimming module 3 can shield the display surface 21, so that the user cannot view the display surface 21.

[0034] Specifically, if Figure 3 As shown, the dimming module 3 may include a controller 31 and a polymer-dispersed liquid crystal film 32 (Polymer-dispersed Liquid Crystal Film, PDLC Film). The controller 31 can receive the control signal transmitted by the control module 5, and control the action of the polymer-dispersed liquid crystal film 32, thereby changing the arrangement of the liquid crystal in the polymer-dispersed liquid crystal film 32, so that the polymer-dispersed liquid crystal film 32 is transparent (first state) or opaque (second state). The polymer-dispersed liquid crystal film 32 may be attached to the side of the second writing structure 4 facing the display surface 21, or the polymer-dispersed liquid crystal film 32 may be attached to the side of the display surface 21 facing the second writing structure 4, and the present invention is not limited here.

[0035] In the embodiment where the dimming module 3 includes a polymer dispersed liquid crystal film 32, when the polymer dispersed liquid crystal film 32 is in an opaque state (second state), when the user observes the polymer dispersed liquid crystal film 32 with the inner eye, he will be able to see a substantially white, foggy area, that is, when the user looks at the second writing structure 4, he will be able to see the white color of the polymer dispersed liquid crystal film 32 close to the whiteboard 1. Therefore, as long as the user puts the dimming module 3 in the second state, when the user writes on the second writing structure 4, he will be able to get the same experience as writing on the first writing structure 11.

[0036] It is particularly noted that in an embodiment in which the dimming module 3 includes a polymer dispersed liquid crystal film 32, when the polymer dispersed liquid crystal film 32 is transparent (first state), if the display 2 is in a closed state, the user will see the display surface 21 that appears black through the second writing structure 4 and the polymer dispersed liquid crystal film 32. In this state, when the user writes on the second writing structure 4, it will not be easy to see the handwriting. Therefore, when the user wants to write on the second writing structure 4, the dimming module 3 is controlled to make the polymer dispersed liquid crystal film 32 appear white and foggy. Then, when the user writes on the second writing structure 4, the handwriting of the whiteboard pen can be clearly seen.

[0037] The control module 5 is electrically connected to the display 2 and the dimming module 3. The control module 5 can control the display 2 to start and stop. The control module 5 can control the dimming module 3 to operate so that the dimming module 3 is converted from the first state to the second state, or from the second state to the first state. When the control module 5 controls the display 2 to start, the control module 5 will simultaneously control the dimming module 3 to operate, so that the dimming module 3 is converted to the first state (transparent state). At this time, the user can view the screen displayed on the display surface 21 of the display 2 through the second writing structure 4 and the transparent dimming module 3. When the control module 5 controls the display 2 to stop, the control module 5 will simultaneously control the dimming module 3 to operate, so that the dimming module 3 is converted to the second state (opaque state). At this time, when the user views the second writing structure 4, he will view a white-like area, and the user can write on the first writing structure 11 and the second writing structure 4. In other words, when the control module 5 controls the display 2 to operate, it will synchronously control the dimming module 3 to operate, so that the user can view the display surface 21 of the display 2 through the transparent dimming module 3, or the user can see the white, foggy dimming module 3.

[0038] In practical applications, the control module 5 is electrically connected to the display 2 and the dimming module 3 (for example, the aforementioned controller 31). The control module 5 can receive a control signal transmitted by an external electronic device (for example, a Bluetooth device, an infrared remote controller, a smart phone, etc.), and the control module 5 can control the controller 31 and the display 2 to act accordingly according to the control signal received. For example, when the control module 5 receives an on signal transmitted by an external electronic device (for example, a remote controller, a smart phone, etc.), the control module 5 can control the display 2 to start, and control the polymer dispersed liquid crystal film 32 to act through the controller 31, so that the polymer dispersed liquid crystal film 32 presents a transparent state (a first state). Conversely, when the control module 5 receives a off signal transmitted by the external electronic device, the control module 5 can control the display 2 to turn off, and control the polymer dispersed liquid crystal film 32 through the controller 31, so that the polymer dispersed liquid crystal film 32 presents an opaque state (a second state).

[0039] The control module 5 may be integrated into the display 2, or the control module 5 may be a device independent of the display 2 and the controller 31. In the embodiment where the dimming module 3, the display 2 and the control module 5 are integrated into one electronic device, the polymer dispersed liquid crystal film 32 may also be integrated into the display 2.

[0040] like Figure 3 As shown, in order to facilitate the control module 5 to better receive the control signal transmitted by the external electronic device, the control module 5 may include a wireless receiving unit 51 and a processing unit 52. The wireless receiving unit 51 is electrically connected to the processing unit 52, and the processing unit 52 is electrically connected to the dimming module 3 and the display 2. The processing unit 52 may be a variety of microprocessors, etc., and is not limited here. The wireless receiving unit 51 is set on the whiteboard 1, and the wireless receiving unit 51 may be exposed to the whiteboard 1, and the wireless receiving unit 51 is used to receive the wireless signal (such as an infrared signal, a Bluetooth signal, etc.) transmitted by the external electronic device. The processing unit 52 can control the dimming module 3 and the display 2 accordingly according to the signal transmitted by the wireless receiving unit 51, so as to change the state of the dimming module 3 and the on / off state of the display 2.

[0041] The second writing structure 4 is fixedly arranged on the whiteboard 1, and the second writing structure 4 is located on the side of the dimming module 3 opposite to the display 2. The second writing structure 4 is made of a light-transmitting material, and the second writing structure 4 is used to provide a whiteboard pen for writing. In practical applications, the second writing structure 4 can be made of the same material as the first writing structure 11 (for example, acrylic, glass, etc.), and the second writing structure 4 can also be integrally formed with the first writing structure 11.

[0042] In a specific implementation, the side of the second writing structure 4 opposite to the display 2 may be flush with the side of the first writing structure 11 opposite to the whiteboard body 10, so that the user can have a better writing experience when using a whiteboard pen to write on the first writing structure 11 and the second writing structure 4. In an embodiment in which the first writing structure 11 and the second writing structure 4 are integrally formed, the display 2 and the dimming module 3 may be first installed in the groove 102 of the whiteboard body 10, and then the writing structures (the first writing structure 11 and the second writing structure 4) are fixedly arranged on the wide side 101 of the whiteboard body 10.

[0043] In an embodiment where the second writing structure 4 is a component independent of the first writing structure 11, the second writing structure 4 can be detachably arranged on the whiteboard 1, and the relevant maintenance personnel or users can remove the second writing structure 4 from the whiteboard 1 according to needs, so that the groove 102 is connected to the outside and the display 2 is exposed on the whiteboard 1, so that the relevant maintenance personnel can perform related operations such as maintenance on the display 2.

[0044] like Figure 4 As shown, when the user wants to use the whiteboard device A of the present invention simply as a whiteboard 1, the user can transmit a control signal to the control module 5 through a related electronic device, so that the control module 5 controls the dimming module 3 to switch to the second state. At this time, the user will see a white, foggy area when viewing the second writing structure 4. In this way, for the user, when writing on the first writing structure 11 and the second writing structure 4, the user can get the same experience as writing on a general whiteboard.

[0045] like Figure 5 As shown, when the user wants to use the display 2, the user can transmit a control signal to the control module 5 through the relevant electronic device, so that the control module 5 controls the dimming module 3 to switch to the first state. At this time, the user can directly watch the display screen presented by the display surface 21 of the display 2 through the second writing structure 4 and the dimming module 3 that is transparent. Figure 5 In the state shown, the user can still write on the second writing structure 4 , and the handwriting of the user on the second writing structure 4 , so that the viewer can simultaneously view the image displayed on the display 2 and the handwriting on the second writing structure 4 .

[0046] As described above, the whiteboard device A of the present invention can not only provide the user with a writing experience of a general whiteboard, but also provide the user with an experience of watching the display 2 set in the whiteboard device A. Since the whiteboard device A of the present invention includes the display 2, when the whiteboard device A of the present invention is set in a classroom or a conference room, the relevant personnel will not need to purchase equipment such as a television, so that the classroom or conference room can have more activity space that can be used.

[0047] See also Figure 6 , which is a schematic diagram of the use state of one embodiment of the whiteboard device A of the present invention. As shown in the figure, the biggest difference between this embodiment and the previous embodiment is that the second writing structure 4 can be a fogged glass (AGglass), and the haze (Haze) of the fogged glass can be 10%, for example, but not limited to this. Since fogged glass has a relatively low reflectivity compared to general light-transmitting glass, when the dimming module 3 is controlled to be in the second state (opaque), the second writing structure 4 can be used as a screen for the projector P to project.

[0048] See also Figure 7 , 8 , Figure 7 It is a schematic diagram showing one embodiment of the whiteboard device of the present invention. Figure 8 The block diagram of one embodiment of the whiteboard device of the present invention is shown. As shown in the figure, the biggest difference between this embodiment and the aforementioned embodiment is that the control module 5 can also have a switch unit 53. The switch unit 53 is fixedly disposed on the whiteboard 1, and the switch unit 53 is electrically connected to the processing unit 52. The switch unit 53 can transmit a corresponding switching signal to the processing unit 52 according to the user's operation, and the processing unit 52 can transmit a corresponding control signal to the dimming module 3 according to the switching signal, so that the dimming module 3 is converted from the first state to the second state, or the dimming module 3 is converted from the second state to the first state. In other words, in addition to using external electronic devices such as smart phones and remote controllers to transmit wireless signals to control the display 2 and the dimming module 3, the user can also control the dimming module 3 by operating the switch unit 53 to switch the dimming module 3 between the first state and the second state.

[0049] In practical applications, the switch unit 53 can be used only to control the dimming module 3; or, the switch unit 53 can also control the display 2 and the dimming module 3 simultaneously through the processing unit 52, that is, the user can turn on the display 2 and make the dimming module 3 present a light-transmitting state by operating the switch unit 53. In different embodiments, the control module 5 can also have two switch units 53, one of which can be used to provide the user with a single control of the display 2, and the other switch unit 53 can be used to provide the user with a single control of the dimming module 3 state.

[0050] See also Fig. 9 , which is a cross-sectional schematic diagram of one embodiment of the whiteboard device of the present invention. As shown in the figure, the biggest difference between this embodiment and the previous embodiment is that the whiteboard device A can also include a touch module 6, and the touch module 6 is fixedly arranged on the side of the second writing structure 4 facing the display surface 21. The touch module 6 is electrically connected to the control module 5 (such as Figure 3 As shown in FIG. 1 , the control module 5 can generate at least one corresponding touch signal according to the operation of the user on the second writing structure 4. The control module 5 can control the display 2 according to the touch signal transmitted by the control module 5, so that the display 2 changes the screen content displayed on the display surface 21. The touch module 6 referred to here can be a capacitive type, an infrared type, etc. according to the needs, and is not limited here.

[0051] In practical applications, depending on the form of the touch module 6, the touch module 6 can also be directly integrated into the display 2; that is, the display 2 can be a touch screen, and the second writing structure 4 can be attached to the display surface 21. In addition, the second writing structure 4 can also be integrated with the touch module 6 into a single module, that is, the second writing structure 4 can directly serve as the outermost protective glass of the touch module 6. In different applications, the second writing structure 4, the touch module 6 and the dimming module 3 can also be integrated into a single module; or, the second writing structure 4, the touch module 6, the dimming module 3 and the display 2 can also be integrated into an electronic device.

[0052] In summary, the whiteboard device A of the present invention allows users to switch between the whiteboard and the display according to their needs. In other words, for users, as long as they purchase the whiteboard device A, they can have the functions of both the display and the whiteboard.

[0053] The above description is only a preferred feasible embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the protection scope of the present invention.

Claims

1. A whiteboard device, characterized in that: The whiteboard device comprises: A whiteboard, comprising a whiteboard body and a first writing structure, wherein the first writing structure is fixedly arranged on a wide side of the whiteboard body, and the first writing structure is used for providing a whiteboard pen for writing; the whiteboard body is concavely formed with a groove on one side where the first writing structure is arranged; a display fixedly disposed on the whiteboard, and the display is correspondingly located in the groove, a display surface of the display is correspondingly exposed in the groove, and the display surface is disposed toward the direction of the first writing structure; a dimming module fixedly disposed on the whiteboard; the display surface is located within the orthographic projection range of the dimming module in the direction toward the display; the dimming module can be controlled to switch between a first state and a second state; when the dimming module is in the first state, the user can view the display surface through the dimming module; when the dimming module is in the second state, the dimming module can shield the display surface, so that the user cannot view the display surface; A second writing structure, which is fixedly disposed on the whiteboard and is located on a side of the dimming module opposite to the display, the second writing structure is transparent, and a wide side of the second writing structure opposite to the dimming module is used to provide a whiteboard pen for writing; a control module electrically connected to the display and the dimming module; the control module can control the display to be turned on and off; the control module can receive a control signal to control the dimming module to operate so that the dimming module is converted from the first state to the second state, or the dimming module is converted from the second state to the first state; Wherein, the dimming module further comprises a polymer dispersed liquid crystal film, and the polymer dispersed liquid crystal film is fixedly arranged on the display surface, or the polymer dispersed liquid crystal film is fixedly arranged on the side of the second writing structure surface facing the display surface; wherein, when the control module controls the display to start, the control module will simultaneously control the dimming module to operate, so that the dimming module is converted to the first state, and when the dimming module is converted to the first state, the polymer dispersed liquid crystal film is transparent; When the control module controls the display to be turned off, the control module will simultaneously control the dimming module to operate, so that the dimming module is switched to the second state. When the dimming module is switched to the second state, the polymer dispersed liquid crystal film is white. Wherein, a side of the first writing structure for a user to write on and a side of the second writing structure for a user to write on are flush with each other.

2. The whiteboard device according to claim 1, characterized in that: The control module includes a wireless receiving unit and a processing unit. The control module is fixedly mounted on the whiteboard. The wireless receiving unit is electrically connected to the processing unit. The wireless receiving unit can receive the control signal transmitted by an external electronic device. The wireless receiving unit can transmit the received control signal to the processing unit, and the processing unit can control the dimming module accordingly according to the control signal.

3. The whiteboard device according to claim 1, characterized in that: The second writing structure is atomized glass. When the dimming module is controlled to be in the second state, the side of the second writing structure opposite to the display can be used as a screen for projection by a projector.

4. The whiteboard device according to claim 1, characterized in that: The whiteboard device also includes a touch module, which is fixedly arranged on the side of the second writing structure facing the display. The touch module is electrically connected to the control module. The control module can generate at least one corresponding touch signal according to the user's operation on the second writing structure. The control module can control the display according to the touch signal so that the display changes the picture content displayed on the display surface.

5. The whiteboard device according to claim 1, characterized in that: The display is a touch screen, the second writing structure and the dimming module are attached to the display surface, and the display can display corresponding pictures on the display surface according to the user's operation on the second writing structure.

6. The whiteboard device according to claim 1, characterized in that: The control module has a switch unit and a processing unit. The switch unit is fixedly disposed on the whiteboard and is electrically connected to the processing unit. The switch unit can transmit a corresponding switching signal to the processing unit according to the user's operation. The processing unit can control the dimming module according to the switching signal to convert the dimming module from the first state to the second state, or convert the dimming module from the second state to the first state.

7. The whiteboard device according to claim 1, characterized in that: The second writing structure is detachably fixed to the whiteboard. When the second writing structure is removed from the whiteboard, the groove can be connected to the outside, and the display can be exposed to the whiteboard through the groove.

8. The whiteboard device according to claim 1, characterized in that: The groove passes through the whiteboard body and the first writing structure.

9. The whiteboard device according to claim 1, characterized in that: The whiteboard body has at least one wire groove, and at least one electrical port is arranged on the whiteboard body, and the display is connected to the electrical port through at least one electrical connection line, and the electrical connection line is correspondingly arranged in the wire groove. The electrical port is used to provide an electrical connection line for an external electronic device to be plugged in, so that the external electronic device can be electrically connected to the display.

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