CN213958479U

CN213958479U - Large screen interactive blackboard

Info

Publication number: CN213958479U
Application number: CN202022461706.1U
Authority: CN
Inventors: 刘泽江
Original assignee: Suzhou Fanpu Education Technology Co ltd
Current assignee: Suzhou Fanpu Education Technology Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-08-13
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a large screen interactive blackboard, which comprises a first writing board and 2 second writing boards respectively positioned at two sides of a writing panel, wherein the first writing board and the second writing board are both arranged on a frame, and the respective writing surfaces of the first writing board and the second writing board are positioned on the same plane; the back of the first writing board opposite to the writing surface of the back writing board is sequentially provided with a touch control film, liquid crystal glass and a back board, reflection paper, a light guide plate and a light-equalizing film are sequentially stacked on the back board and between the back board and the liquid crystal glass, an anti-glare film is arranged between the transparent partition board and the touch control film, one end, close to the back board, of the mounting bar is provided with a first flanging part bent towards one side far away from the light guide plate, so that the cross section of the mounting bar is L-shaped, and the first flanging part is in surface contact with the back board. The utility model discloses not only practiced thrift the cost, but also can attenuate blackboard thickness, optimize and produce the property ability.

Description

Large screen interactive blackboard

Technical Field

The utility model relates to an interactive blackboard of large screen belongs to teaching equipment technical field.

Background

Traditional white boards and blackboards are used in traditional classrooms. The teacher writes on the board of the white board or the blackboard with an ink pen or chalk when giving lessons in class to leave handwriting, and erases useless handwriting with a blackboard eraser or rag. The modernization and informatization of education need to use teachers as the core of teaching and use students as teaching centers. Teachers and students participate in classroom teaching interactively, and the learning efficiency is improved by means of thinking visual education.

The large-screen interactive blackboard is a combination of a traditional teaching mode and a modern teaching mode, comprises a display unit and a touch glass blackboard which are connected together through an external frame, and can be used for multimedia demonstration and writing. The blackboard combining the large-screen interactive blackboard and the writing blackboard has better market development prospect. However, in use, the existing large-screen interactive blackboard can meet teaching requirements, but has a large optimization space in material cost and performance.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an interactive blackboard of large screen, this interactive blackboard of large screen both practiced thrift the cost, can attenuate blackboard thickness again, optimize product property ability.

In order to solve the technical problem, the utility model discloses a technical scheme is: a large-screen interactive blackboard comprises a first writing board and 2 second writing boards respectively positioned on two sides of the first writing board, wherein the first writing board and the second writing board are both arranged on a frame, and the respective writing surfaces of the first writing board and the second writing board are positioned on the same plane;

the touch control film is pasted on the back surface, opposite to the writing surface, of the first writing board, the liquid crystal glass is arranged between the touch control film and the back plate and mounted on the first writing board, the back plate is mounted on the frame and located right behind the liquid crystal glass, and a transparent partition plate is arranged between the touch control film and the liquid crystal glass;

at least two pressing strips are arranged between the edge of the liquid crystal glass and the back plate, one side of each pressing strip, which is far away from the liquid crystal glass, is connected with the first writing board which is pasted with the touch control film, the other side of each pressing strip is in surface contact with the edge of the liquid crystal glass, and the liquid crystal glass and the transparent partition plate are arranged on the first writing board;

a plurality of fixed blocks which are arranged at intervals are arranged between one side of the pressing bar, which is far away from the liquid crystal glass, and the first writing board, one surface of each fixed block is arranged on the first writing board, and the other surface of each fixed block is connected with the pressing bar through a screw;

the back plate is sequentially overlapped with reflecting paper, the light guide plate and the light-equalizing film between the back plate and the liquid crystal glass, mounting strips are respectively arranged on the back plate and the two sides of the light guide plate, and a lamp strip is respectively arranged on the surfaces of the two mounting strips, which are opposite to the side end face of the light guide plate, so that light of the lamp strip is emitted into the light guide plate;

an anti-dazzle film is arranged between the transparent partition plate and the touch control film, an anti-dazzle surface of the anti-dazzle film is in contact connection with the touch control film, and the other surface of the anti-dazzle film is in adhesive connection with the transparent partition plate;

one end of the mounting strip, which is close to the back plate, is provided with a first flanging part which is bent towards one side far away from the light guide plate, so that the cross section of the mounting strip is in an L shape, and the first flanging part is in surface contact with the back plate.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, one end of the mounting strip, which is far away from the back plate, is provided with a second flanging part which is bent towards the direction of the light guide plate, and the second flanging part is in surface contact with the edge of the light homogenizing film, so that the reflecting paper, the light guide plate and the light homogenizing film are fixed on the back plate in an extruding manner.

2. In the above scheme, the length of the first flanging part is the same as that of the mounting bar.

3. In the above scheme, the anti-glare film comprises a substrate layer and an anti-glare coating coated on one surface of the substrate layer.

4. In the above scheme, the other surface of the substrate layer is coated with a glue layer.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

1. the utility model discloses large screen interactive blackboard, it assembles liquid crystal glazing, touch-control membrane, first clipboard into independent module through the layering, realizes showing and touch-control function, and simple easy the realization of process flow not only can improve productivity and yields, but also can the holistic thickness of greatly attenuate blackboard, improve and show definition and touch-control precision; furthermore, the independently arranged light source structure is light, thin and simple in structure, convenient to assemble and low in process requirement, and can be directly installed behind the liquid crystal glass in a close-up mode, and the thickness of the blackboard is further reduced.

2. The utility model discloses large screen interactive blackboard, be provided with an anti-dazzle membrane between its transparent partition and the touch-control membrane, the anti-dazzle plain noodles of this anti-dazzle membrane is connected with the touch-control membrane contact, another surface and the transparent partition bonding of anti-dazzle membrane are connected, and anti-dazzle plain noodles can make touch-control membrane and anti-dazzle membrane, liquid crystal glazing closely laminate and do not produce the ripple, improve the display definition when further attenuate blackboard thickness; in addition, one end of the mounting strip, which is close to the back plate, is provided with a first flanging part which is bent towards one side far away from the light guide plate, so that the cross section of the mounting strip is in an L shape, the first flanging part is in surface contact with the back plate, and the arrangement of the first flanging part can continuously and quickly transfer the heat of the lamp strip to the back plate for heat dissipation, thereby avoiding the influence on the performance of other devices due to poor heat dissipation, saving the cost, reducing the thickness of the blackboard and optimizing the performance of products; furthermore, the one end that the backplate was kept away from to the mounting bar has the second turn-ups portion of bending to the light guide plate direction, this second turn-ups portion with the edge face contact of membrane of homogenizing to on being fixed in the backplate with reflection paper, light guide plate, the extrusion of membrane of homogenizing, through the setting of second turn-ups portion, make the support bar have spacing light guide plate and optical diaphragm's effect simultaneously, realized the location to light guide plate and optical diaphragm under the condition that does not increase any cost, improved production efficiency.

Drawings

FIG. 1 is a schematic view of the structure of a large screen interactive blackboard of the present invention;

FIG. 2 is a sectional view of the structure of the large screen interactive blackboard;

FIG. 3 is a sectional view of the large screen interactive blackboard with a partial structure;

FIG. 4 is a schematic view of the anti-glare film structure of the large screen interactive blackboard of the present invention;

figure 5 is the utility model discloses a local structure section three of large screen interactive blackboard.

In the above drawings: 1. a first writing pad; 2. a touch film; 3. liquid crystal glass; 4. a back plate; 5. layering; 6. a fixed block; 7. a screw; 8. a frame; 10. a transparent partition; 11. an anti-glare film; 111. a substrate layer; 112. an anti-glare coating; 113. a glue layer; 12. a reflective paper; 13. a light guide plate; 14. a light homogenizing film; 15. mounting a bar; 151. a first burring; 16. A light strip; 161. a circuit substrate; 162. a light emitting element; 17. a diffusion membrane; 18. a brightness enhancement film; 31. a second writing board.

Detailed Description

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

Example 1: a large-screen interactive blackboard comprises a

first writing board

1 and 2 second writing boards 31 respectively positioned on two sides of the first writing board 1, wherein the first writing board 1 and the second writing boards 31 are both arranged on a side frame 8, and the respective writing surfaces of the first writing board 1 and the second writing boards 31 are positioned on the same plane;

a touch control film 2, liquid crystal glass 3 and a back plate 4 are sequentially arranged behind the first writing board 1 opposite to the writing surface of the first writing board, the touch control film 2 is pasted on the back surface of the first writing board 1 opposite to the writing surface of the first writing board, the liquid crystal glass 3 is arranged between the touch control film 2 and the back plate 4 and is installed on the first writing board 1, the back plate 4 is installed on a frame 8 and is positioned right behind the liquid crystal glass 3, and a transparent partition plate 10 is arranged between the touch control film 2 and the liquid crystal glass 3;

at least two pressing strips 5 are arranged between the edge of the liquid crystal glass 3 and the back plate 4, one side of each pressing strip 5, which is far away from the liquid crystal glass 3, is connected with the first writing board 1 which is pasted with the touch control film 2, the other side of each pressing strip 5 is in surface contact with the edge of the liquid crystal glass 3, and the liquid crystal glass 3 and the transparent partition plate 10 are arranged on the first writing board 1;

a plurality of fixing blocks 6 which are arranged at intervals are arranged between one side of the pressing bar 5, which is far away from the liquid crystal glass 3, and the first writing board 1, one surface of each fixing block 6 is arranged on the first writing board 1, and the other surface of each fixing block 6 is connected with the pressing bar 5 through a screw 7;

the back plate 4 and the liquid crystal glass 3 are sequentially overlapped with a piece of reflection paper 12, a light guide plate 13 and a light homogenizing film 14, the back plate 4 and the two sides of the light guide plate 13 are respectively provided with a mounting strip 15, and the surfaces of the two mounting strips 15, which are opposite to the side end face of the light guide plate 13, are respectively provided with a light strip 16, so that light of the light strip 16 enters the light guide plate 13;

an anti-dazzle film 11 is arranged between the transparent partition plate 10 and the touch control film 2, an anti-dazzle surface of the anti-dazzle film 11 is in contact connection with the touch control film 2, and the other surface of the anti-dazzle film 11 is in adhesive connection with the transparent partition plate 10;

one end of the mounting strip 15 close to the back plate 4 is provided with a first flanging part 151 bent towards the side far away from the light guide plate 13, so that the cross section of the mounting strip 15 is in an L shape, and the first flanging part 151 is in surface contact with the back plate 4.

One end of the mounting bar 15, which is far away from the back plate 4, is provided with a second flanging part which is bent towards the direction of the light guide plate 13, and the second flanging part is in surface contact with the edge of the light homogenizing film 14, so that the reflecting paper 12, the light guide plate 13 and the light homogenizing film 14 are fixed on the back plate 4 in an extruding way;

the length of the first burring 151 is the same as the length of the mounting bar 15; the anti-glare film 11 includes a substrate layer 111 and an anti-glare coating layer 112 coated on one surface of the substrate layer 111; the other surface of the substrate layer 111 is coated with a glue layer 113; the second writing board 31 is a glass blackboard.

Example 2: a large-screen interactive blackboard comprises a

first writing board

The first writing board 1 is a transparent glass blackboard, and the second writing board 31 is a transparent glass blackboard. The transparent partition board 10 is a polyurethane board; the pressing strip 5 is an aluminum pressing strip; the back plate 4 is an aluminum back plate, and the mounting bar 15 is an aluminum mounting bar. By adopting the large-screen interactive blackboard, the liquid crystal glass, the touch film and the first writing board are assembled into the independent module through the pressing bar, so that the display and touch functions are realized, the process flow is simple and easy to realize, the productivity and the yield can be improved, the overall thickness of the blackboard can be greatly reduced, and the display definition and the touch precision can be improved; furthermore, the independently arranged light source structure is light, thin and simple in structure, convenient to assemble and low in process requirement, and can be directly installed behind the liquid crystal glass in a close manner to further reduce the thickness of the blackboard;

in addition, the anti-dazzle surface can enable the touch control film to be tightly attached to the anti-dazzle film and the liquid crystal glass without generating water ripples, so that the display definition is improved while the thickness of the blackboard is further reduced;

in addition, the arrangement of the first flanging part can continuously and quickly transfer the heat of the lamp strip to the back plate for heat dissipation, thereby avoiding the influence on the performance of other devices due to poor heat dissipation, saving the cost, reducing the thickness of the blackboard and optimizing the performance of products;

furthermore, through the arrangement of the second flanging part, the supporting strip has the effect of limiting the light guide plate and the optical membrane, the positioning of the light guide plate and the optical membrane is realized under the condition of not increasing any cost, and the production efficiency is improved.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A large screen interactive blackboard is characterized in that: the multifunctional pen comprises a first writing board (1) and 2 second writing boards (31) which are respectively positioned on two sides of the first writing board (1), wherein the first writing board (1) and the second writing boards (31) are both arranged on a frame (8), and the respective writing surfaces of the first writing board (1) and the second writing boards (31) are positioned on the same plane;

a touch control film (2), liquid crystal glass (3) and a back plate (4) are sequentially arranged behind the first writing plate (1) opposite to the writing surface of the first writing plate, the touch control film (2) is pasted on the back surface of the first writing plate (1) opposite to the writing surface of the first writing plate, the liquid crystal glass (3) is arranged between the touch control film (2) and the back plate (4) and is installed on the first writing plate (1), the back plate (4) is installed on a frame (8) and is positioned right behind the liquid crystal glass (3), and a transparent partition plate (10) is arranged between the touch control film (2) and the liquid crystal glass (3);

at least two pressing strips (5) are arranged between the edge of the liquid crystal glass (3) and the back plate (4), one side, far away from the liquid crystal glass (3), of each pressing strip (5) is connected with the first writing board (1) pasted with the touch control film (2), the other side of each pressing strip (5) is in surface contact with the edge of the liquid crystal glass (3), and the liquid crystal glass (3) and the transparent partition plate (10) are installed on the first writing board (1);

a plurality of fixing blocks (6) which are arranged at intervals are arranged between one side of the pressing strip (5) far away from the liquid crystal glass (3) and the first writing board (1), one surface of each fixing block (6) is arranged on the first writing board (1), and the other surface of each fixing block (6) is connected with the pressing strip (5) through a screw (7);

the backlight module is characterized in that reflection paper (12), a light guide plate (13) and a light-equalizing film (14) are sequentially overlapped on the back plate (4) and positioned between the back plate (4) and the liquid crystal glass (3), mounting strips (15) are respectively arranged on the back plate (4) and positioned on two sides of the light guide plate (13), and a lamp strip (16) is respectively arranged on the surfaces of the two mounting strips (15) opposite to the side end face of the light guide plate (13) so that light of the lamp strip (16) is emitted into the light guide plate (13);

an anti-dazzle film (11) is arranged between the transparent partition plate (10) and the touch film (2), an anti-dazzle surface of the anti-dazzle film (11) is in contact connection with the touch film (2), and the other surface of the anti-dazzle film (11) is in adhesive connection with the transparent partition plate (10);

one end of the mounting strip (15) close to the back plate (4) is provided with a first flanging part (151) which is bent towards one side far away from the light guide plate (13), so that the cross section of the mounting strip (15) is L-shaped, and the first flanging part (151) is in surface contact with the back plate (4).

2. The large-screen interactive blackboard according to claim 1, characterised in that: one end of the mounting strip (15), which is far away from the back plate (4), is provided with a second flanging part bent towards the direction of the light guide plate (13), and the second flanging part is in surface contact with the edge of the light homogenizing film (14), so that the reflecting paper (12), the light guide plate (13) and the light homogenizing film (14) are fixed on the back plate (4) in an extruding manner.

3. The large-screen interactive blackboard according to claim 1, characterised in that: the length of the first flanging part (151) is the same as that of the mounting strip (15).

4. The large-screen interactive blackboard according to claim 1, characterised in that: the anti-glare film (11) comprises a base material layer (111) and an anti-glare coating (112) coated on one surface of the base material layer (111).

5. The large-screen interactive blackboard according to claim 4, characterised in that: and the other surface of the substrate layer (111) is coated with a glue layer (113).