TWI707786B - Whiteboard device - Google Patents

Abstract

The invention discloses a whiteboard device, which comprises a whiteboard, a light modulation module, a display, a second writing structure and a control module. The display is located in the recess of the whiteboard. A first writing structure is arranged on one side of the whiteboard. The first writing structure and the second writing structure are used to provide whiteboard pen writing. The second writing structure is disposed in front of the display. The light modulation module will be transparent when the light modulation module be activated by the control module. The control module can activate the display and light modulation module at the same time, so that the user can view the display through the second writing structure and the light modulation module.

Description

Whiteboard device

The invention relates to a whiteboard, in particular to a multifunctional whiteboard device.

The existing whiteboard can only be used for writing with whiteboard pens and has no other functions. For this reason, most of the teachers or reporters will cooperate with multimedia devices such as TVs and projectors to present the teaching or report content in a more specific way in the form of films or animations. Of course, in the case of small classrooms and small spaces or limited equipment, teachers or reporters will not be able to use multimedia devices such as TVs and projectors, which causes troubles for teachers or reporters.

The present invention discloses a whiteboard device, which is mainly used to improve teachers or reporters. In the case of only a whiteboard, the problem of teaching or report content cannot be vividly presented.

The embodiment of the present invention provides a whiteboard device, which includes: a whiteboard, a display, a dimming module, a second writing structure, and a control module. The whiteboard 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 whiteboard pen writing; the whiteboard body is formed from the side provided with the first writing structure The recess is formed with a groove. The 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. The dimming module is fixedly arranged on the whiteboard; the display surface is located in the orthographic projection range of the direction 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 light 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 cover the display surface, making the user unable to view the display surface. The second writing structure is fixedly arranged on the whiteboard and is located on the side of the dimming module opposite to the display. The second writing structure is transparent, and the second writing structure is opposite to the wide side of the dimming module to provide whiteboard pen writing . The control module 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 action of the dimming module to make the dimming module switch from the first state It is 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 control the dimming module to act at the same time, so that the dimming module is converted to the first state. Wherein, when the control module controls the display to turn off, the control module will control the dimming module to act at the same time, so that the dimming module is converted to the second state.

To sum up, 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 requirements, and then directly watch the display on the whiteboard, while the user When the display is not needed, 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 can allow users to present reports or teaching content in the form of writing on a whiteboard according to their own needs, or use a display to present reports or teaching content in a dynamic manner, and related There is no need to set up TV and other devices in the venue.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention, but these descriptions and drawings are only used to illustrate the present invention, and do not make any claims about the protection scope of the present invention. limit.

In the following description, if it is pointed out, please refer to the specific drawing or as shown in the specific drawing, it is only used to emphasize in the subsequent description, and most of the related content appears in the specific drawing. However, it is not limited that only the specific drawings can be referred to in the subsequent description.

Please refer to FIGS. 1 to 4 together. FIG. 1 is a three-dimensional schematic diagram of the whiteboard device of the present invention, FIG. 2 is a cross-sectional schematic diagram of the whiteboard device of the present invention, FIG. 3 is a block diagram of the whiteboard device of the present invention, and FIG. 4 Shown is a schematic diagram of one of the use states of the whiteboard device of the present invention, and FIG. 5 is a schematic diagram of another use state of the whiteboard device of the present invention. As shown in the figure, the whiteboard device A includes: a whiteboard 1, a display 2, a dimming module 3, a second writing structure 4, and a control module 5.

As shown in FIGS. 1 and 2, 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 surface 101 of the whiteboard body 10, and the first writing structure 11 is used to provide whiteboard pen writing. The main body 10 of the whiteboard is recessed with a groove 102 on one side of the first writing structure 11. In FIG. 2 of this embodiment, the groove 102 penetrates the whiteboard body 10 and the first writing structure 11 as an example, 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 the whiteboard body 10; or, the groove 102 may only penetrate the whiteboard body 10 but not the first writing structure 11. The position of the groove 102 at the whiteboard body 10 can be changed according to requirements. In the figure of the present embodiment, the groove 102 is approximately at the center of the whiteboard body 10, but it is not limited to this.

The whiteboard body 10 referred to here is mainly used to support the first writing structure 11. The specific material and appearance 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 requirements, as long as the first writing structure 11 is opposite to the wide side 111 of the whiteboard body 10 to provide whiteboard pen writing. Regarding the manner in which the whiteboard body 10 and the first writing structure 11 are fixed to each other, it may be changed according to requirements, such as bonding, snapping, locking, etc.

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 and present it on the display surface 21; or, the display 2 can also be built-in There is a related processor, and the display 2 can display a corresponding screen on the display surface 21 according to signals transmitted by an external input device (such as a keyboard, a mouse, a smart phone, etc.). In other words, the display 2 may be used only for displaying pictures, or the display 2 may also be a smart TV, a computer, etc. with an operating system.

It is worth mentioning that in the drawings of this embodiment, the groove 102 is shown as a closed rectangle as an example, but the shape and style of the groove 102 are not limited to this, for example, the groove 102 It 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 can also be used to divide the whiteboard 1 into two areas, while the display 2, the dimming module 3, and the second writing structure 4 are correspondingly located in the two areas of the whiteboard 1. between. The shape of the groove 102 may be designed according to the appearance of the display 2. In practical 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 to the groove. 102, that is, when the user views the display 2 through the second writing structure 4 and the dimming module 3, they will not see the frame structure around the display surface 21.

It should be noted that the whiteboard body 10 may also be provided with at least one wire slot (not shown), and at least one electrical connection port (for example, HDMI, VGA, etc.) is provided on the whiteboard body 10, and the display 2 passes at least An electrical connection line is connected to the electrical connection port, the electrical connection line is correspondingly arranged in the wire slot, and the external electronic device can be plugged into the electrical connection port through the electrical connection line to be electrically connected to the display 2. Regarding the type, location and number of electrical connection ports, etc., they can be changed according to requirements, and are not limited here. In addition, the control module 5 can also be connected to one of the electrical connection ports, and the user can be electrically connected to the control module 5 through the electrical connection port.

The dimming module 3 is fixedly arranged on the whiteboard 1, and the display surface 21 is located in the orthographic projection range of the dimming module 3 in the direction of the display 2; that is, the dimming module 3 may be fixed to the groove of the whiteboard 1 102, 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 to 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 fixed independently of the display 2. It is arranged in the groove 102 and is not limited here. In special applications, the dimming module 3 can also be integrated with the display 2 into an electronic device.

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 cover the display surface 21, allowing the use of The person cannot view the display surface 21.

Specifically, as shown in FIG. 3, 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 appears as Transparent (first state) or opaque (second state). The polymer dispersed liquid crystal film 32, for example, 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 also be attached to the display surface 21 facing the first side. The side of the writing structure 4 is not limited here.

In the embodiment where the dimming module 3 includes the polymer dispersed liquid crystal film 32, when the polymer dispersed liquid crystal film 32 is opaque (the second state), the user observes the polymer dispersed liquid crystal film 32 with the inner eye When viewing the second writing structure 4, the user will be able to see the white, fog-like area that is approximately white and foggy. Therefore, as long as the user puts the dimming module 3 in the second state, the user can get the same experience as writing on the first writing structure 11 when writing on the second writing structure 4.

In particular, 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 transparent (the first state), if the display 2 is closed In this state, the user will see the black display surface 21 through the second writing structure 4 and the polymer dispersed liquid crystal film 32. In this state, the user will not be able to write on the second writing structure 4 It is easy to see the written handwriting. Therefore, when the user wants to write on the second writing structure 4, by controlling the dimming module 3 to make the polymer dispersed liquid crystal film 32 appear white and foggy, the user will When writing on the writing structure 4, the handwriting written by the whiteboard pen can be clearly seen.

The control module 5 is electrically connected to the display 2 and the dimming module 3. The control module 5 can control the startup and shutdown of the display 2, and the control module 5 can control the operation of the dimming module 3 so that the dimming module 3 can be controlled by The first state is converted to the second state, or the second state is converted to the first state. When the control module 5 controls the display 2 to start, the control module 5 will control the dimming module 3 to act at the same time, so that the dimming module 3 is converted to the first state (transparent). At this time, the user can pass The second writing structure 4 and the transparent dimming module 3 can view the screen displayed on the display surface 21 of the display 2. When the control module 5 controls the display 2 to turn off, the control module 5 will also control the dimming module 3 to act, so that the dimming module 3 is converted to the second state (opaque). At this time, the user watches the second When writing structure 4, a white-like area will be seen, 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 operation of the display 2, it will synchronously control the operation of the dimming module 3, so that the user can watch the display surface 21 of the display 2 through the transparent dimming module 3, or The user can see the dimming module 3 which is white and foggy.

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 control signals transmitted by external electronic devices (such as bluetooth devices, infrared remote controllers, smart phones, etc.), and the control module 5 can correspondingly control the controller 31 according to the control signals received by it. And display 2 is activated. For example, when the control module 5 receives a turn-on signal transmitted by an external electronic device (such as a remote control, a smart phone, etc.), the control module 5 may control the display 2 to start, and control the height through the controller 31 The molecule-dispersed liquid crystal film 32 operates so that the polymer-dispersed liquid crystal film 32 assumes a transparent state (first state). In contrast, when the control module 5 receives a shutdown signal transmitted by an 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 The dispersed liquid crystal film 32 assumes an opaque state (second state).

The control module 5 can be integrated in the display 2 or the control module 5 can also 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 can also be integrated into the display 2 together.

As shown in FIG. 3, in order to facilitate the control module 5 to better receive the control signals 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 various types of microprocessors, etc., and is not limited herein. The wireless receiving unit 51 is disposed on the whiteboard 1, and the wireless receiving unit 51 may be exposed on the whiteboard 1, and the wireless receiving unit 51 is used to receive wireless signals (such as infrared signals, Bluetooth signals, etc.) transmitted by external electronic devices. The processing unit 52 may correspondingly control the dimming module 3 and the display 2 according to the signal transmitted by the wireless receiving unit 51, so as to change the state of the dimming module 3 and the open/close state of the display 2.

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 light-transmitting material, and the second writing structure 4 is used to provide whiteboard pen writing. In practical applications, the second writing structure 4 may be made of the same material (for example, acrylic, glass, etc.) as the first writing structure 11, and the second writing structure 4 may also be the same as the first writing structure 11. Set in one piece.

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

In the 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 installed on the whiteboard 1, and the relevant maintenance personnel or users can be based on requirements. , The second writing structure 4 is removed from the whiteboard 1, so that the groove 102 is connected to the outside, and the display 2 is exposed on the whiteboard 1, so that related maintenance personnel can perform maintenance and other related operations on the display 2.

As shown in FIG. 4, when the user wants to use the whiteboard device A of the present invention as a whiteboard 1, he can transmit control signals to the control module 5 through related electronic devices, so that the control module 5 can control the dimming. The module 3 transitions 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, the first writing structure 11 and the second writing When writing on structure 4, you will get the experience of writing on a general whiteboard.

As shown in FIG. 5, when the user wants to use the display 2, he can transmit control signals to the control module 5 through related electronic devices, 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 on the display surface 21 of the display 2 through the second writing structure 4 and the transparent dimming module 3. In the state shown in FIG. 5, the user can still write on the second writing structure 4, and the handwriting written by the user on the second writing structure 4, so that the viewer can view the display 2 at the same time The picture displayed and the handwriting on the second writing structure 4.

As described above, the whiteboard device A of the present invention can not only provide the user with the writing experience of a general whiteboard, but also provide the user with an experience of viewing 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 installed in a classroom or conference room, relevant personnel will not need to purchase additional equipment such as televisions, so that the classroom and conference room can have more The activity space can be used.

Please refer to FIG. 6, which shows 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 AG glass, and the haze of the atomized glass can be, for example, 10%. But not limited to this. Since the atomized 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 the projector P The screen used for projection.

Please refer to FIGS. 7 and 8. FIG. 7 shows a schematic diagram of one embodiment of the whiteboard device of the present invention, and FIG. 8 shows a block 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 control module 5 may also have a switch unit 53. The switch unit 53 is fixedly arranged on the whiteboard 1, and the switch unit 53 is electrically connected to the processing unit 52. The switch unit 53 can transmit the corresponding switching signal to the processing unit 52 according to the user's operation, and the processing unit 52 can transmit the corresponding control signal to the dimming module 3 according to the switching signal to make the dimming module 3 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 controls to transmit wireless signals to control the display 2 and the dimming module 3, the user can also control the dimming module by operating the switch unit 53 3. To switch the dimming module 3 between the first state and the second state.

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 be By operating the switch unit 53, the display 2 is turned on at the same time, and the dimming module 3 is rendered in a light-transmitting state. In different embodiments, the control module 5 can also have two switch units 53, one of the switch units 53 can be used to provide the user to individually control the opening and closing of the display 2, while the other switch unit 53 can be It is used to provide the user to individually control the state of the dimming module 3.

Please refer to FIG. 9, which shows a schematic cross-sectional view 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 embodiments is: the whiteboard device A may also include a touch module 6, which is fixedly arranged on the second writing structure 4 facing the display surface 21 Side. The touch module 6 is electrically connected to the control module 5 (as shown in FIG. 3), and the control module 5 can generate at least one corresponding touch signal according to the user's operation on the second writing structure 4. The control module 5 can correspondingly control the display 2 according to the touch signal transmitted by the control module 5 so that the display 2 can change 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 requirements, and is not limited here.

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 It may 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 be directly used 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 together into a single module; or, the second writing structure 4, the touch module 6, and the dimming module The module 3 and the display 2 can also be integrated together as an electronic device.

In summary, the whiteboard device A of the present invention allows users to switch between the whiteboard and the display according to their needs, that is, for users, they can have both a display and a display by purchasing the whiteboard device A. Whiteboard function.

The above descriptions are only the preferred and feasible embodiments of the present invention, which do not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the description and drawings of the present invention are included in the protection scope of the present invention. .

A: Whiteboard device

1: whiteboard

10: Whiteboard body

101: wide side

102: Groove

11: The first writing structure

111: wide side

2: display

21: display surface

3: Dimming module

31: Controller

32: Polymer dispersed liquid crystal film

4: The second writing structure

5: Control module

51: wireless receiving unit

52: processing unit

53: switch unit

6: Touch module

P: Projector

Figure 1 is a schematic diagram of the whiteboard device of the present invention.

Figure 2 is a schematic cross-sectional view of the whiteboard device of the present invention.

Figure 3 is a block diagram of the whiteboard device of the present invention.

Fig. 4 is a schematic diagram of one of the use states of the whiteboard device of the present invention.

Fig. 5 is a schematic diagram of another use state of the whiteboard device of the present invention.

Fig. 6 is a schematic diagram of the whiteboard device of the present invention used with a projector.

FIG. 7 is a schematic diagram of one embodiment of the whiteboard device of the present invention.

FIG. 8 is a block diagram of one embodiment of the whiteboard device of the present invention.

9 is a schematic cross-sectional view of one embodiment of the whiteboard device of the present invention.

A: Whiteboard device

1: whiteboard

10: Whiteboard body

101: wide side

102: Groove

11: The first writing structure

111: wide side

2: display

21: display surface

3: Dimming module

4: The second writing structure

Claims (9)

A whiteboard device, comprising: a whiteboard comprising 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 the whiteboard Pen writing; the whiteboard body is provided with the first writing structure on the side of the concave formed a groove; a display, which is fixedly arranged on the whiteboard, and the display is correspondingly located in the groove, so 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 white board; the display surface is located at the The dimming module is in the orthographic projection range of the direction toward the display; the dimming module can be controlled to switch between a first state and a second state; the dimming module is in the 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 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 The writing structure is transparent, the second writing structure is opposite to the wide side of the dimming module for providing whiteboard pen writing; a control module 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 action of the dimming module, so that the dimming module is switched from the first state Is the second state, or the dimming module is converted from the second state to the first state; wherein, the dimming module further includes a polymer dispersed liquid crystal film, and the polymer The 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 all The dimming module is activated to convert the dimming module to the first state, and when the dimming module is converted to the first state, the polymer dispersed liquid crystal film is transparent; wherein , When the control module controls the display to turn off, the control module will simultaneously control the dimming module to act, so that the dimming module is converted to the second state, and the dimming When the module is converted to the second state, the polymer dispersed liquid crystal film is white; wherein, the first writing structure is used to provide a side for the user to write, and the second writing structure is used to provide the user The writing side is flush with each other. The whiteboard device according to claim 1, wherein the control module includes a wireless receiving unit and a processing unit, the control module is fixedly arranged on the whiteboard, and the wireless receiving unit is electrically connected to the processing unit. Unit, the wireless receiving unit can receive the control signal transmitted by an external electronic device, the wireless receiving unit can transmit the control signal it receives to the processing unit, and the processing unit can be based on The control signal correspondingly controls the action of the dimming module. The whiteboard device according to claim 1, wherein the second writing structure is atomized glass, and when the dimming module is controlled to be in the second state, the second writing structure is opposite to One side of the display can be used as a screen for projection by the projector. The whiteboard device according to claim 1, wherein the whiteboard device further includes a touch module fixedly disposed on a side of the second writing structure facing the display, and the touch module electrically Sexually connected to the control module, so The control module can generate at least one corresponding touch signal according to the user's operation on the second writing structure, and the control module can correspondingly control the display according to the touch signal so that all The display changes the screen content displayed on the display surface. The whiteboard device according to claim 1, wherein the display is a touch screen, the second writing structure and the dimming module are attached to the display surface, and the display can be configured according to the user The operation on the second writing structure displays a corresponding screen on the display surface. The whiteboard device according to claim 1, wherein the control module has a switch unit and a processing unit, the switch unit is fixedly arranged on the whiteboard, and the switch unit is electrically connected to the processing unit; The switch unit can transmit a corresponding switching signal to the processing unit according to a user's operation, and the processing unit can control the dimming module according to the switching signal to make the dimming module The first state is converted to the second state, or the dimming module is converted from the second state to the first state. The whiteboard device according to claim 1, wherein the second writing structure is detachably fixed to the whiteboard, and when the second writing structure is removed from the whiteboard, the groove can communicate with the outside, The display can be exposed to the whiteboard through the groove. The whiteboard device according to claim 1, wherein the groove is provided through the whiteboard body and the first writing structure. The whiteboard device according to claim 1, wherein the whiteboard body has at least one wire slot, and at least one electrical connection port is provided on the whiteboard body, and the display is connected to the electrical connection port through at least one electrical connection line Connected, the electrical connection line is correspondingly arranged in the wire slot, and the electrical connection port is used for The electrical connection line of the external electronic device is plugged in, so that the external electronic device can be electrically connected with the display.

Images