CN213303371U - Interactive chalk copying equipment and digital teaching facility using same - Google Patents

Abstract

The application provides interactive chalk copying equipment which comprises a display screen and a host, wherein the display screen comprises a glass layer, a display layer and a back plate which are sequentially arranged, the outer surface of the glass layer is a frosted surface, the glossiness is 40-65%, the light transmittance is 50-85%, and the roughness Ra is 0.1-0.9 mu m; the host is a micro-host implemented as a circuit board, the circuit board is fixed to the outside of the back plate, and the circuit board further includes a driving circuit of the display layer; also provided is a digital teaching facility such as a desk, a drawing board, an easel, a blackboard or the like using the copying apparatus. This interactive chalk imitates equipment and uses this imitate digital teaching facility of equipment be convenient for the man-machine interaction, can promote to use and experience for the digital teaching of chalk word, powder stroke can more extensively be used, also be convenient for simultaneously the digital study of chalk word, powder stroke.

Description

Interactive chalk copying equipment and digital teaching facility using same

Technical Field

The application relates to the technical field of teaching and learning equipment, in particular to interactive chalk copying equipment and a digital teaching facility using the same, such as a student desk.

Background

Although broadcasting, television and internet have been deeply used as main propaganda ways in our lives with the development of society, propaganda media using blackboards and whiteboards as carriers still play irreplaceable roles in communities, campuses and other occasions. In addition, most of teaching modes of primary and secondary schools in China still adopt blackboard teaching, and the teachers and universities have clear requirements for chalk characters of students. The quality of the chalk characters written on the blackboard/whiteboard directly influences the receiving effect of readers and lessees, the self quality of the writers is reflected, and the beautiful chalk characters not only convey information to the public, but also form fumigation and influence on students. In the market, the demands for learning chalk characters and chalk strokes are still vigorous, and various chalk copying tools are developed to meet the demands of consumers.

CN201080073Y discloses a multifunctional writing board, which comprises a frame, and a panel and a back plate assembled thereon, wherein the panel made of sand glass plate is embedded in the groove of the frame, a movable inserting plate for writing copy copybooks of chalk, brush pen, art, picture and various fonts is arranged at the back of the panel, and is supported and positioned by an elastic support fixed at the periphery of the frame, and the back plate made of white plate is hinged with the frame by a hinge. The panel is made by transparent sandblast glass board and is made the writing clear in this scheme, imitates directly perceived clearly, and the activity picture peg can change at any time as required, and structural design is reasonable, easy operation, collects multiple functions in an organic whole, and application scope is wide.

CN 210466839U discloses imitative shadow board writing copying equipment, including the stereoplasm copying board of light-permeable, copying board one side has rough copying writing surface to be applicable to the writing of chalk, the another side sets up the copybook, and the copybook both ends are the roll-up respectively on two spools, set up spool slewing mechanism on the spool, and spool pivoted supports on the reel frame, copies the board setting in the copybook top between two spools. CN 210466842U discloses a board copying apparatus, which comprises a light-permeable hard copying board, one side of the copying board has a rough copying writing surface, and the other side is provided with a copybook; be provided with the blackboard eraser on the copying board, the blackboard eraser includes the backup pad, the gliding cooperation in backup pad both ends is on copying board both sides, set up the fly leaf between backup pad and the copying board, the orientation spaced that moves along the backup pad on the fly leaf is provided with towards the face of wiping futilely of copying the face and the face of wiping wetly, the fly leaf middle part is through the rotatable connection of rotation fulcrum in the backup pad, even have the ejector pin of the relative writing face distance of copying the board of face of resetting elastomer and control futilely between fly leaf and the backup pad, ejector pin one end and fly leaf contact, the gliding backup pad of passing of one end. Above-mentioned copying equipment utilizes the copying board simulation blackboard that has the frosted surface, is applicable to writing and copying of chalk, approaches the actual state of writing of blackboard writing, and convenient to use person improves fast and writes the level.

In addition, CN 210200060U discloses a chalk copy equipment, including the board of duplicating of light-permeable, the board of duplicating sets up on the support frame, is provided with the copybook printing light portion on the support frame to do not influence typeface light and pass through the board of duplicating, the gliding cooperation of board of duplicating is on the support frame, convenient removal to the board of duplicating. Through the portable board of tracing that adopts the cooperation support frame, the convenient removal to the board of tracing, the support frame can effectively protect glass to prevent the breakage, because the board of tracing can remove, can be so that the different positions of the board of tracing correspond with the copybook, increases and writes the scope, when whole space of a whole page all write the back and unify again and erase.

It is just including the simple equipment of copying board and copybook, supporting mechanism that transparent ground glass made to see traditional chalk copy equipment, and the copybook is the entity copybook mostly, even is electron copybook (display screen), also has the distance of being equivalent with copying the board, and it carries inconveniently, can not human-computer interaction, uses to experience relatively poorly. In the digital era, a digital product has wider market prospect, and a writing brush character copying device with man-machine interaction is already provided, but an interactive chalk copying device with low manufacturing cost and good using effect is still the target for technical research personnel to complete cumin.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary of the application in order to provide a basic understanding of some aspects of the application. It should be understood that this summary is not an exhaustive overview of the present application. It is not intended to identify key or critical elements of the application or to delineate the scope of the application. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

One of the technical problems solved by the application is to provide an interactive chalk copying device and corresponding digital teaching facilities, such as desks, drawing boards, easels, blackboards, table shapes and the like, so as to overcome the problems that the existing chalk copying device cannot realize human-computer interaction and is poor in use experience.

According to one aspect of the application, the interactive chalk copying equipment comprises a display screen and a host, wherein the display screen comprises a glass layer, a display layer and a back plate which are sequentially arranged; the outer surface of the glass layer is a frosted transparent surface; the host is implemented as a micro-host of a circuit board that is fixed to the outside of the backplane, and the circuit board further includes a driving circuit of the display layer.

According to one embodiment, the micro-host is capable of communicating with at least one of: cloud platform, central control equipment, and other interactive chalk copy equipment's host computer.

According to another embodiment, the frosted transparent surface (i.e., the copy surface) of the glass ply has a gloss of 40-65% (e.g., 42%, 45%, 48%, 50%, 52%, 54%, 56%, 58%, 60%, 62%, 64%, etc.), a light transmission of 50-85% (e.g., 55%, 60%, 65%, 70%, 75%, 80%, 82%, etc.), and a roughness Ra of 0.1-0.9 μm (e.g., 0.15 μm, 0.2 μm, 0.3 μm, 0.4 μm, 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, etc.).

The gloss represents the degree to which the surface of an object is close to a mirror surface, and characterizes the diffuse reflective properties and anti-glare properties of glass. In order to ensure the visual effect of the copybook to be copied displayed in the display layer, the glossiness of the glass layer is limited to 40-65%.

The light transmittance represents the efficiency of light transmission of a display device or the like, and directly affects the visual effect of the interactive chalk copying device. In order to ensure the visual effect of the calligraphy and painting copybook to be copied displayed in the display layer, the light transmittance of the glass layer is limited to 50-85 percent; if the light transmittance is too high, more than 85%, visual fatigue of the user can be caused; if the transmittance is too low, lower than 50%, the display will be unclear and the copying will not be possible.

The surface roughness refers to the unevenness of small intervals and tiny peaks and valleys on the processed surface, in order to ensure the writing effect of the chalk copying equipment, the outer surface of the glass layer is set to be a frosted surface, and the roughness Ra is limited to be 0.1-0.9 mu m; if the roughness Ra is too small and is less than 0.10 mu m, the chalk is easy to slip and difficult to hang powder when being written by chalk; if the roughness Ra is too large and larger than 0.90 μm, the image tends to be blurred, which is not favorable for copying.

The glass adopted by the existing intelligent blackboard ensures smooth writing and balance of display definition, which is a technical combination difficulty; generally speaking, it is difficult to guarantee the display definition if the writing effect can be guaranteed, and it is difficult to guarantee the writing effect if the definition can be guaranteed. The chalk copying equipment disclosed by the invention adopts the special glass layer, the glossiness is 40-65%, the light transmittance is 50-85%, the roughness Ra is 0.1-0.9 mu m, the requirements of writing effect and display definition can be simultaneously considered, and good chalk copying use experience is provided.

Further, according to the statistics of trial tests, in order to obtain better chalk copying experience, the frosted transparent surface (i.e. the copying surface) of the glass layer has a gloss of 52-65% (such as 54%, 56%, 58%, 60%, 62%, 64%, etc.), a light transmittance of 80-85% (such as 81%, 82%, 83%, 84%, etc.), and a roughness Ra of 0.10-0.25 μm (such as 0.12 μm, 0.14 μm, 0.16 μm, 0.18 μm, 0.20 μm, 0.22 μm, 0.24 μm, etc.).

Further, according to the statistical experimental result of trial tests, in order to obtain better chalk copying using experience, the frosted transparent surface (namely the copying surface) of the glass layer has the glossiness of 55-60%, the roughness Ra of 0.13-0.14 μm and the transmittance of 83-85%.

According to another embodiment, the glass layer is a tempered glass layer having a thickness of 0.2-2mm (e.g. 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 1.8 mm).

According to another embodiment, the back plate is a metal back plate.

According to another embodiment, the circuit board is fixed to the back surface of the back plate by a metal protection plate.

According to another embodiment, the display layer is a capacitive liquid crystal display.

According to another embodiment, a touch layer is disposed on an inner surface of the glass layer between the glass layer and the display layer.

According to another embodiment, the touch layer is a multi-touch layer.

According to another embodiment, the frosted surface of the glass layer is made by methods conventional in the art including acid etching, sand blasting, special material application, film application, and the like.

For example, the blasting includes: spraying vitreous silica sand with the particle size of 0.3-0.9mm on the surface of the glass at the temperature of 300-350 ℃ to change the flatness of the surface of the glass;

for another example, the acid etching includes: preparing an acid solution by using concentrated acid with the purity of 65-85% and water according to the proportion of 1:1-1:2, and uniformly spraying the acid solution on the surface of the glass to destroy the flatness of the surface of the glass.

According to another embodiment, the display device further comprises a separate control box, and the control circuit of the display layer is located in the separate control box and not located on the circuit board.

According to another embodiment, the separate control box comprises at least one of: a power switch, a USB interface and an earphone interface; the corresponding drive circuit is located in the separate control box and not on the circuit board.

According to another embodiment, the micro-host is further configured to include at least one of the following systems: the system comprises a font typesetting system, a video resource library system, an account login system, a tombstone query system and a course lecture system.

According to another aspect of the application, a digital teaching facility is provided, which comprises the chalk copying device. The digital teaching facilities can be desks, drawing boards, easels, blackboards, table types and the like.

According to one embodiment, the digital teaching facility is a digital desk, and the chalk copying device is arranged on the digital desk.

According to one embodiment, the display screen of the chalk copying device is fixed on the digital desk through a frame structure, and the display screen is at an angle of 0-90 degrees (such as 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, and the like) with the horizontal plane.

According to one embodiment, the display screen of the chalk copying device is fixed on the digital desk through a frame structure, and the display screen is arranged at an angle of 45-85 degrees (such as 50 degrees, 60 degrees, 70 degrees, 80 degrees and the like) with the horizontal plane. So, this equipment is imitatied to chalk can adopt vertical setting to more be close to the actual state of writing of blackboard writing, promotes to use and experiences, and convenient to use person improves the chalk fast simultaneously and writes the level.

According to another embodiment, a waterproof layer is arranged between the frame structure and the glass layer.

According to another embodiment, the bezel structure has a mesh bottom that supports a back plate of the display screen.

According to another embodiment, the separate control box is disposed at a side of the digital desk.

According to the application, the interactive chalk copying equipment and the digital teaching facility using the interactive chalk copying equipment are provided, the human-computer interaction is facilitated, the use experience can be improved, the digital teaching of chalk characters and chalk strokes can be more widely applied, and meanwhile the digital learning of the chalk characters and the chalk strokes is facilitated.

Drawings

To further clarify the above and other advantages and features of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings. Which are incorporated in and form a part of this specification, along with the detailed description that follows. Elements having the same function and structure are denoted by the same reference numerals. It is appreciated that these drawings depict only typical examples of the invention and are therefore not to be considered limiting of its scope. In the drawings:

fig. 1 is a schematic view of a layered structure of a display screen of an interactive chalk copying device according to an embodiment of the present invention;

fig. 2 is a schematic view of a layered structure of a display screen of an interactive chalk copying device according to another embodiment of the present invention;

fig. 3 is a schematic diagram of an interactive chalk copying apparatus and its separate control box according to an embodiment of the present invention;

FIG. 4 is a schematic top view of a digitizing desk according to an embodiment of the present invention;

FIG. 5 is a schematic front view of a digitizing desk according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a frame structure of an interactive chalk copying apparatus according to an embodiment of the present invention;

fig. 7 is a force exploded view of an interactive chalk copying device according to an embodiment of the invention;

the reference numerals are explained below: the display screen comprises a glass layer 1, a touch layer 2, a display layer 3, a backboard 4, a display screen 10, a net-shaped supporting structure 5, a circuit board 6, a protective cover plate 7 and screws 8.

Detailed Description

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in the specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the device structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.

Interactive chalk copying equipment

According to one aspect of the utility model, an interactive chalk copying device is provided, which comprises a display screen and a host, wherein the display screen comprises a glass layer, a display layer and a back plate which are arranged in sequence; the glass layer is transparent glass, and the outer surface of the glass layer is a frosted surface; the host is implemented as a micro-host of a circuit board that is fixed to the outside of the backplane, and the circuit board further includes a driving circuit of the display layer.

Prior art computers typically include two parts, a host and a display screen. For a separate computer such as a desktop computer, since the display screen is separated from the host computer, the separate computer occupies a relatively large space and is not suitable for a digital classroom. For all-in-one computers including all-in-one desktop computers or notebook computers, the cost is high because the all-in-one computers have complete host systems.

In a digital classroom, the function of the student terminal is single, and generally, the student terminal runs a relatively fixed program and content, and the application program and the content come from a central control device or even a cloud system in many cases, so that a host local to the student terminal does not need a very powerful function. In view of this, in the interactive chalk copying device that can be used as a digital classroom student terminal, the host is a micro host, is implemented in the form of a circuit board, and is attached to the outside of the display screen, so as to save space.

In addition, the interactive chalk copying device is often placed on a student desk and therefore may be impacted and pressed by various external forces, and therefore it is necessary to have higher strength. The current display screen technology mostly adopts full-lamination technology, so that the display screen technology can have higher strength, but a host (such as a tablet computer) or a display screen driving circuit (display screen) is often arranged in the display screen technology, so that the improvement of the strength is hindered. In view of this, the present application removes the display screen driving circuit from the display screen. In one embodiment of the present application, the display screen driving circuit and the micro-host are implemented in a circuit board, which is disposed outside the backplane of the display screen (e.g., on the back side of the backplane).

Fig. 1 is a schematic view of a layered structure of a display screen of an interactive chalk copying apparatus according to an embodiment of the present invention. As shown in fig. 1, the chalk copying apparatus of this embodiment includes a glass layer 1, a display layer 3, and a back plate 4, and the display layer 3 and the back plate 4 are disposed in this order below the glass layer 1. The three together form the display screen 10 of the present application.

The glass layer 1 and the back plate 4 respectively protect the front surface and the back surface of the display layer 3 to form a composite protection structure. In one embodiment of the present application, the display layer 3 is implemented as a capacitive liquid crystal display, which generally includes upper and lower polarizers, color filters, a liquid crystal layer, a backlight module, and the like.

In order to improve the strength of the display screen, the glass layer 1 can be a toughened glass layer. The back plate may be a metal back plate. The toughened glass layer 1 is arranged above the display layer 3 and protects the front surface of the display layer 3. The pressure from the surface of the chalk copying equipment is greatly reduced after being dispersed by the toughened glass layer, so that the pressure on the unit area of the display layer 3 is reduced to the range which can be borne by the display layer 3, and the damage to the display layer 3 due to pressing, hard object impact and the like is prevented.

The chalk copying apparatus of the present embodiment can improve the strength thereof without increasing the thickness of the glass layer by using the glass layer 1 made of tempered glass.

In the embodiment, the glass layer 1 is a toughened glass layer, and the thickness is preferably 0.2-2 mm. The tempered glass can be strengthened by a chemical tempering process, for example, in the case that the thickness does not exceed 2mm, the following strength indexes can be realized: the surface compressive stress is between 150MPa and 300 MPa; the compressive strength is between 100MPa and 210MPa under the condition that the failure probability is 1 percent.

In contrast, the strength indexes of the common glass with the thickness of less than 2mm are as follows: the surface compressive stress is between 70MPa and 170 MPa; the compressive strength is between 48MPa and 120MPa under the condition that the failure probability is 1 percent.

In the embodiment, the glossiness of the outer surface (i.e. the copying surface) of the glass layer 1 is 40-65%, the light transmittance is 50-85%, the roughness Ra is 0.1-0.9 μm, the requirements of writing effect and display definition can be considered at the same time, and good chalk copying experience is provided. Preferably, the frosted transparent surface (i.e., the copy surface) of the glass layer has a gloss of 52-65%, a light transmission of 80-85%, and a roughness Ra of 0.10-0.25 μm. In a specific example, the outer surface (i.e., the copy surface) of the glass layer 1 has a tempered glass layer having a gloss of 55 to 60%, a roughness Ra of 0.13 to 0.14 μm, and a transmittance of 83 to 85%.

The preparation method of the frosted surface of the glass layer 1 comprises the conventional preparation methods of acid etching, sand blasting, special material pasting, film pasting and the like. In a specific example, the material can be manufactured by a sand blasting method: spraying quartz sand with the particle size of 0.5-0.8mm on the surface of the glass at the temperature of 320-350 ℃ to change the flatness of the surface of the glass; the method can also adopt an acid etching method to manufacture: preparing acid solution by using 60-70% sulfuric acid and water according to the proportion of 1:1-1:2, and uniformly spraying the acid solution on the surface of the glass to destroy the flatness of the surface of the glass.

In the above embodiment of the present invention, the display screen is suitable for the chalk writing and the copying definition is good.

In this embodiment, preferably, the display screen 10 further includes a touch layer 2. Which may be plated directly onto the lower (or inner) surface of the glass layer 1. Fig. 2 is a schematic view of a display screen of the interactive chalk copying apparatus of the present embodiment. Since the touch layer 2 is closely bonded to the glass layer 1, the two are actually formed as one layer. This kind of close coupling has eliminated the air bed between touch-control layer 2 and the toughened glass layer 1, prevents on the one hand that pressure can't conduct downwards because of the existence of air bed to promote the holistic intensity of equipment, on the other hand makes chalk copy equipment possess more ultra-thin characteristic. The touch layer 2 may be a multi-touch layer in a specific example.

The metal back plate 4 is disposed below the display layer 3, and can be attached to the display layer 3 to protect the back surface of the display layer 3. The stress on the front surface of the display layer 3 is greatly reduced after being dispersed through the toughened glass layer 1, and in order to further protect the back surface of the display layer 3 from being damaged, the metal back plate 4 is arranged below the display layer 3, so that the pressure reaching the back of the display layer 3 is borne by the metal back plate 4 and further dispersed.

As described above, the front and the back of the display layer 3 are protected by the tempered glass layer 1 and the metal back plate 4, respectively, so that an overall protection effect is formed, the damage of the internal structure of the display layer 3 is prevented, and the overall strength of the interactive chalk copying device is improved.

Preferably, the tempered glass layer 1, the touch layer 2, the display layer 3 and the metal back plate 4 can be formed into an integral structure, so that the strength of the whole interactive chalk copying device is further improved. Regarding the formation of this integrative structure, touch-control layer 2 can directly plate on toughened glass layer 1's lower surface as before, in addition, can combine each other through full laminating technique between each layer to can set up the plastics frame in chalk copying equipment's periphery and be used for sealed and protection, the plastics frame blocks respectively from top to bottom on toughened glass layer 1 and metal backplate 4.

The integral structure has a surface compressive stress of between 183MPa and 335 MPa; the compressive strength is 130MPa to 250MPa under the condition that the failure probability is 1 percent. Compared with the situation of the toughened glass layer 1, the surface compressive stress and the compressive strength are improved.

In one embodiment of the present invention, the interactive chalk copying device further comprises a circuit board 6 (commercially available) for controlling or driving the display layer 3. The circuit board of a conventional interactive copying device is complex and is usually arranged between a display layer and a back plate. And the utility model discloses an among the interactive chalk copying equipment of embodiment, because the function is single, control circuit is simple relatively, consequently can shift out the display screen and set up externally. To further protect the circuit board, the interactive chalk copying apparatus of the present embodiment is provided with a circuit board protection cover plate 7. As shown in fig. 1 to 3, the circuit board 6 may be disposed on the back surface of the metal back plate 4 (if from top to bottom, the back surface of the metal back plate 4 is the lower surface of the metal back plate 4), and the circuit board protective cover plate 7 is attached to and covers the circuit board 6. Because set up circuit board 6 and circuit board protection apron 7 at the back of metal backplate 4 to there is not any drive or circuit between demonstration layer 3 and metal backplate 4, consequently metal backplate 4 can be smooth, thereby metal backplate 4 can laminate with demonstration layer 3 more perfectly, disperses better and bears the stress from toughened glass layer 1, thereby promotes the intensity of whole chalk copy equipment. Preferably, the circuit board 6 can be attached to the back surface of the metal back plate 4 and protrude from the back surface of the metal back plate 4 by a small piece, and the circuit board protective cover plate 7 also protrudes from the back surface of the metal back plate 4. The circuit board protection cover plate 7 is connected with the metal back plate 4 through screws 8, for example, the number of the screws 8 may be 4 per circle, or any other connection method may be adopted. The circuit board protective cover 7 may be provided with an opening for a connection line between the circuit board 6 and the display layer 3 to pass through.

Of course, the circuit board 6 may be completely separated from the display screen 10, and is also within the scope of the present invention.

The circuit board 6 may also comprise a micro-mainframe of the entire chalk copying device. Therefore, the host computer is integrated with the display screen, so that the space is reduced, and the host computer is easy to overhaul due to being arranged outside the display screen (such as the back of the back plate). The function of the micro-host can be simplified, so that more functions and contents of the micro-host can depend on a central control device or a cloud platform. It may communicate with a central control device and/or a cloud platform. The micro-host can also communicate with the hosts of other interactive chalk copying devices to facilitate communication among students.

In another embodiment of the present application, a separate control box 302 (including a separate power switch, a USB port, and an earphone port, etc.) may be designed to be separate from the display screen. The control box 302 includes not only various interfaces and switches but also a drive/control circuit including these interfaces and switches, and is connected to the circuit board 6 via lines 304. In this way, the circuit board 6 shares the functions of the circuit board, so that the circuit board can be simply configured to be disposed on the back surface of the metal back plate 4, and the circuit board can be connected to and driven by a simple connection line (not shown) through the edge of the display layer 3 to the display layer 3.

Optionally, an explosion-proof membrane is arranged on the upper surface of the toughened glass layer 1 and used for buffering impact, so that the impact is prevented from causing the breakage and scattering of glass, the screen surface of the interactive chalk copying equipment is prevented from bursting, the surface hardness of the screen surface can be improved, and the screen surface is prevented from being scratched due to the carving of hard objects. Preferably, the explosion-proof membrane is a nano explosion-proof membrane, and has better buffering effect and explosion-proof effect.

According to the utility model discloses an above-mentioned embodiment of interactive chalk copying equipment, the holistic intensity of equipment is high, can bear and come from positive pressure and impact to have the little host computer of small-scale, thereby practice thrift the space.

According to another embodiment, a support mechanism is included for supporting the display screen 10 such that the display screen 10 is at an angle to the horizontal, such as 0-90 degrees, preferably 45-85 degrees. So, this interactive chalk copying equipment can adopt vertical setting to more be close to the actual state of writing of chalk blackboard writing, promotes to use and experiences, and convenient to use person improves the chalk fast simultaneously and writes the level.

Digital teaching appliance-desk

According to another aspect of the present invention, there is provided a digital desk 500 (fig. 4, fig. 5) comprising an interactive chalk copying device as described above, wherein the interactive chalk copying device displays teaching or learning and reading contents on a screen of the chalk copying device as a part of a desktop 402 of the digital desk.

Fig. 4 is a schematic top view of a digitizing desk 500 according to an embodiment of the present application. The part of the chalk copying device from the glass layer 1 to the back plate 4 (and the circuit board protective cover plate 7), namely the display screen 10, is fixed and supported by a frame structure 11 on the digital desk corresponding to a hole or a concave part (not shown) formed on the interactive chalk copying device. Note that the digitizing desk 500 illustrates two interactive chalk copying apparatuses, but the application is not limited thereto, and the interactive chalk copying apparatuses on the same desk may be one (fig. 5, the digitizing desk 500 with the upright chalk copying apparatus) or more (fig. 4, the digitizing desk 500 with the flat chalk copying apparatus).

As an embodiment, the frame structure 11 may further enhance the chalk copying device. In particular, as shown in fig. 6 (which is along a-a in fig. 4), the frame structure 11 may have an integral mesh support structure 5. The net-like support structure 5 and the frame structure 11 correspond to a container in which the display screen 10 is accommodated. In other words, the "receptacle" is fixed to the digitizing desk and the display screen 10 is housed in the "receptacle".

The specific structure of each part of the frame structure 11 shown in fig. 6 is not relevant to the present invention, and therefore, is not described in detail. In particular, the frame structure 11 is shown with various parts, but they are connected together by means of structures not shown in the figures, such as screws or the like.

As described above, since the circuit board protective cover 7 protrudes from the lower surface of the metal back plate 4, the rear surface of the metal back plate 4 is not flat, and it is not convenient to use the entire plate as a support structure. The reticular support structure is more easily adapted to the shapes of the metal back plate 4 and the circuit board protective cover plate 7, not only can effectively support the metal back plate 4, but also has the advantages of being beneficial to heat dissipation and light in weight, and in addition, as the reticular structure can be made thicker under the condition of ensuring heat dissipation and equivalent materials, stronger supporting force can be provided.

Through further supporting metal backplate 4 by netted bearing structure 5, seeing from the front of chalk copying equipment, can conduct pressure to netted bearing structure 5 from toughened glass layer 1 layer upon layer effectively, from the point dispersion face, further effectively promote the bulk strength of this embodiment's interactive chalk copying equipment.

Seen from the back of the chalk copying equipment, the metal back plate 4 has the same function as the toughened glass layer 1 and has the stress dispersion function, and the display layer 3 is clamped in the middle and is dispersed to the whole layer regardless of the stress in any direction; however, the strength of the metal back plate 4 is limited, the metal back plate is easily bent by stress, and the dispersion effect is not as good as that of the tempered glass layer 1. By further dispersing the force with the net-like support structure 5, a better effect can be achieved. That is, the overall effect of the metal back plate 4 and the mesh-like support structure 5 is equivalent to the effect of the front tempered glass layer 1 when viewed from the back.

On the basis that the toughened glass layer 1, the touch layer 2, the display layer 3 and the metal back plate 4 form an integrated structure, the strength of the composite protection structure formed by the integrated structure and the reticular support structure 5 is further improved. Fig. 7 is a force exploded view of an interactive chalk copying device according to an embodiment of the present invention. As shown in the figure, the surface stress of the interactive chalk copying equipment is decomposed layer by layer through a toughened glass layer 1, a metal back plate 4 and a net-shaped supporting structure 5. The surface compressive stress of the composite protective structure is between 248MPa and 380 MPa; the compressive strength is between 144MPa and 300MPa under the condition that the failure probability is 1 percent. Both the surface compressive stress and the compressive strength are further improved compared to the case of the above-described integral structure.

In a preferred embodiment, as shown in fig. 6, a waterproof layer 600 is further provided between the frame structure 11 and the glass layer 1 of the display screen 10 to prevent water from seeping down from the gap between the display screen 10 and the frame and entering the display layer 3 from the edge of the display screen 10 assembly when water spills on the desktop of the digital desk.

In addition, since the display screen 10 is used on a digital desk, the display screen 10 is in a substantially flat state, particularly when integrally embedded in the desk. At this time, if a conventional switch integrated with the display screen and various interfaces and the like are used, it is inevitable to dispose on a surface substantially flush with the desktop of the display screen. In this case, when a user performs various operations on the desk, the user may easily perform an erroneous operation or the presence of some interfaces may cause inconvenience.

Thus, a separate control box 302 is used as previously described. Thus, as shown in FIG. 5, the split control box, and thus the various switches and interfaces thereon, such as USB and headphone jacks, may be located on the side of a desk rather than on the desktop 402. In particular, it may be located on the side of the desk adjacent to the student. Of course this is not limiting and the split control box 302 could be located on either side of the desk, such as the left and right sides of the desk.

According to one embodiment, the display screen 10 of the chalk copying device is fixed on the digital desk through a frame structure, and the included angle between the display screen 10 and the horizontal plane is 0-90 degrees; preferably set at 45-85 degrees; so, this equipment is imitatied to chalk can adopt vertical setting to more be close to the actual state of writing of blackboard writing, promotes to use and experiences, and convenient to use person improves the chalk fast simultaneously and writes the level.

The aforementioned interactive chalk copying device and digital desk of the present application may be used for any learning or teaching purpose. Among them, painting and calligraphy teaching is one of its uses.

The traditional calligraphy and art teaching means are basically that the calligraphy and art teaching means are read while copying or copybooks are placed under the Chinese art paper or copying board for copying, and the defects of the copying or copying mode are that the copying is inaccurate, the copying is not clear, copying materials cannot or cannot be changed conveniently, copying original pieces cannot be amplified and reduced, and the like.

And replacing a manuscript or a copybook with a digital display device can solve at least some of the problems described above. May have functions specific to painting and calligraphy teaching, including functions that facilitate student copy learning. As in an embodiment of the present invention, the digital teaching facility can be applied to the classroom scene, and the interactive chalk copying device can be disposed on the blackboard for the teacher and the desk for the student.

Specifically, for the painting and calligraphy learning function, at least one of the following systems can be installed in the micro-host: the system comprises a font typesetting system, a video resource library system, an account login system, a tombstone query system and a course lecture system. During learning, the micro-host can control the display screen 10 to enter a copying state to display calligraphy or painting works such as a tablet, a copybook and the like, and a user can directly copy the calligraphy and painting works displayed in the display screen on the display screen.

The application has realized digital teaching by interactive digital copying equipment, does not violate traditional study and teaching mode of calligraphy writing and fine arts drawing simultaneously yet to can imbed interactive digital copying equipment into use such as calligraphy table, fine arts table, calligraphy platform, art table, drawing board, easel, blackboard, improve the convenience of using, consequently be the perfect adaptation of traditional culture and modern technology.

When the chalk copying device is used, the chalk copying device is turned on through a physical switch, and an interface of a digital calligraphy teaching platform is accessed. The platform mainly comprises an account management system, a font typesetting software system, a video resource library platform system, a post query system, a course lecture system and the like. The learner can log in by using the account password of the learner and enter the software system of the digital copying equipment. Aiming at the personal account, the functions of recording the learning process, monitoring the learning progress, evaluating the learning result and the like can be realized.

By means of the font typesetting software, various formats, various fonts and various signatures can be typeset for copying and copying learning. Through the video resource library platform system, video teaching such as the demonstration writing of a calligrapher can be watched, and the aim of one-to-one lecture of the calligrapher is achieved. The copy and the copy can be realized through the copy reading of the copy inquiry system, the amplification and the reduction of the copy, and the like, thereby realizing the digital application of the copy resource. The course instruction system may include theoretical knowledge of calligraphy, basic skills for calligraphy, and the like.

Like this, combine traditional painting and calligraphy teaching and digital technique for resource variability is big, resource selectivity is many, can alternate the copy resource at any time, makes the copy effect promote, does not overturn the tradition again and writes and the drawing mode, the effectual essence that has kept traditional culture.

According to the above description of the embodiments, the present application provides the following technical solutions.

1. An interactive chalk copying device comprises a display screen and a host, and is characterized in that the display screen comprises a glass layer, a display layer and a back plate which are sequentially arranged, and the outer surface of the glass layer is a frosted layer; the host is a micro-host implemented as a circuit board fixed to an outside of the back plate, and the circuit board further includes a driving circuit of the display layer.

2. The interactive chalk copying device according to claim 1, wherein the micro-host is capable of communicating with at least one of: cloud platform, central control equipment, and other interactive chalk copy equipment's host computer.

3. The interactive chalk copying device according to claim 2, wherein the micro-host is further configured to include at least one of the following systems: the system comprises a font typesetting system, a video resource library system, an account login system, a tombstone query system and a course lecture system.

4. The interactive chalk copying apparatus according to one of claims 1 to 3, characterized in that the glass layer is a tempered glass layer with a thickness of 0.2-2 mm.

5. The interactive chalk copying device according to one of claims 1 to 3, wherein the back plate is a metal back plate, and the circuit board is fixed to the back surface of the back plate by a metal protection plate.

6. The interactive chalk copying device according to one of claims 1 to 3, wherein the display layer is a capacitive liquid crystal display.

7. The interactive chalk copying apparatus according to one of claims 1 to 3, characterized in that a touch layer is implemented on a surface of the glass layer between the glass layer and the display layer.

8. The interactive chalk copying device according to claim 7, wherein the touch layer is a multi-touch layer.

9. The interactive chalk copying apparatus according to one of claims 1 to 3 and 8, further comprising a separate control box, wherein the control circuit of the display layer is located in the separate control box and not on the circuit board.

10. The interactive chalk copying apparatus according to claim 9, wherein the separate control box includes at least one of: a power switch, a USB interface and an earphone interface; the corresponding drive circuit is located in the separate control box and not on the circuit board.

11. A digital teaching facility comprising an interactive chalk copying device according to any one of claims 1 to 10.

12. The digital teaching facility according to claim 11, wherein the display screen is fixed to the digital teaching facility through a frame structure, and the display screen forms an angle of 0 to 90 degrees with a horizontal plane.

13. The digital teaching facility of claim 12 wherein the display screen is at an angle of 45-85 degrees to the horizontal.

14. The digital teaching facility according to claim 12 or 13, wherein a waterproof layer is provided between the frame structure and the glass.

15. The digital teaching facility according to any of claims 11 to 13, wherein the frame structure has a mesh bottom, and the mesh bottom supports a back plate of the display screen.

16. The digital teaching facility according to either claim 12 or claim 13 wherein the interactive chalk copying device further comprises a separate control box in which the control circuitry of the display layer is located but not on the circuit board; the separated control box is positioned on the side surface of the digital teaching facility.

17. The digital teaching facility according to any one of claims 11 to 13, wherein the digital teaching facility is a desk, a drawing board, an easel, or a blackboard.

Finally, it is also to be noted that the term "comprising" is intended to cover a non-exclusive inclusion, such that a device comprising a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it should be understood that the above-described embodiments are only for illustrating the present invention and do not constitute a limitation of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention is to be defined only by the terms of the appended claims and equivalents thereof.

Claims (17)

1. An interactive chalk copying device comprises a display screen and a host, and is characterized in that the display screen comprises a glass layer, a display layer and a back plate which are sequentially arranged, and the outer surface of the glass layer is a frosted layer; the host is a micro-host implemented as a circuit board fixed to an outside of the back plate, and the circuit board further includes a driving circuit of the display layer.

2. The interactive chalk copying device of claim 1, wherein the micro-host is capable of communicating with at least one of: cloud platform, central control equipment, and other interactive chalk copy equipment's host computer.

3. The interactive chalk copying device of claim 2, wherein the micro-mainframe is further configured to include at least one of: the system comprises a font typesetting system, a video resource library system, an account login system, a tombstone query system and a course lecture system.

4. The interactive chalk copying device according to one of claims 1 to 3, characterized in that the glass layer is a tempered glass layer with a thickness of 0.2-2 mm.

5. The interactive chalk copying device according to one of claims 1 to 3, wherein the back plate is a metal back plate, and the circuit board is fixed to a back surface of the back plate by a metal protection plate.

6. An interactive chalk copying device according to one of claims 1 to 3, characterized in that the display layer is a capacitive liquid crystal display.

7. Interactive chalk copying device according to one of the claims 1 to 3, characterized in that between the glass layer and the display layer a touch layer is realized on the surface of the glass layer.

8. The interactive chalk copying device of claim 7, wherein the touch layer is a multi-touch layer.

9. The interactive chalk copying device according to one of claims 1 to 3, 8, further comprising a separate control box, wherein the control circuitry of the display layer is located in the separate control box and not on the circuit board.

10. The interactive chalk copying device of claim 9, wherein the separate control box includes at least one of: a power switch, a USB interface and an earphone interface; the corresponding drive circuit is located in the separate control box and not on the circuit board.

11. A digital teaching facility comprising an interactive chalk copying device according to one of claims 1 to 10.

12. The digitizing teaching facility of claim 11, wherein the display screen is secured to the digitizing teaching facility by a bezel structure, the display screen being at an angle of 0-90 degrees from horizontal.

13. The digital teaching facility of claim 12 wherein the display screen is angled at 45-85 degrees from horizontal.

14. The digital teaching facility of claim 12 or 13 wherein a waterproof layer is provided between the frame structure and the glass.

15. Digital teaching apparatus according to claim 12 or 13 wherein the frame structure has a mesh bottom which supports the back plate of the display screen.

16. The digital teaching facility of claim 12 or 13 wherein the interactive chalk copying device further comprises a separate control box in which the control circuitry of the display layer is located and not on the circuit board; the separated control box is positioned on the side surface of the digital teaching facility.

17. Digital teaching facility according to one of claims 11 to 13, wherein the digital teaching facility is a desk, a drawing board, an easel or a blackboard.

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