CN213458478U

CN213458478U - Large-breadth writing touch blackboard

Info

Publication number: CN213458478U
Application number: CN202020314201.XU
Authority: CN
Inventors: 刘泽江; 牛立军
Original assignee: Suzhou Youen Information Technology Co ltd
Current assignee: Suzhou Youen Information Technology Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2021-06-15
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a touch-control blackboard is write to big breadth, including an at least clipboard and an at least interactive board, clipboard and interactive board are fixed through respective frame work dress respectively, interactive board is including clipboard, touch-control membrane, LCD panel and backlight unit, backlight unit further includes base plate, LED lamp area, light guide plate, membrane and reflection paper of evening light, reflection paper is located between base plate and the light guide plate, still includes an at least fly leaf, is provided with linear guide and at least one interval distribution's movable block between the up end of this fly leaf and the frame up end, perhaps in the linear guide embedding movable block embedding linear guide. The utility model discloses the big breadth is write the touch-control blackboard and has been simplified the flow of production, be convenient for process, practices thrift manufacturing cost, can also reduce medium plate and liquid crystal display panel deformation under the influence of environmental factor to improve definition and the precision of touch-control, user experience that show are good.

Description

Large-breadth writing touch blackboard

Technical Field

The utility model relates to a touch-control blackboard is write to big breadth belongs to education and equips technical field.

Background

With the development of science and technology and the deeper understanding of some diseases, the disadvantages of the traditional chalk teaching are also gradually paid more attention. For example, chalk dust generated by chalk during writing and erasing is mainly calcium sulfate or calcium carbonate. Inhalation of the trachea can cause discomfort in the nose, throat and throat, and lung cancer is more likely to be caused if the trachea is kept in the environment for a long time. Although "dustless" chalk is also available in the market, it is only that grease or polyalcohol substances are added into the chalk as adhesive, and then fillers with larger specific gravity, such as clay, marl, cement and the like, are added. Therefore, the specific gravity and the volume of the chalk dust can be increased to a certain degree, and the chalk dust is not easy to scatter. However, in practical application, the effect of reducing the pollution of the chalk dust is not very obvious.

In addition, in the campus nowadays, multimedia classrooms and electronic blackboards are common, wherein the general components of the multimedia classrooms include a multimedia computer, a liquid crystal projector, a projection screen, an audio device and the like. During actual teaching, a multimedia computer is used for displaying pre-prepared teaching materials through projection of a projector, and meanwhile, the cooperation of sound and man-machine interaction operation between a user and the computer are added according to needs to complete the teaching or training process. It can be seen that the multimedia teaching apparatus in the prior art also has some drawbacks, such as: the multimedia equipment is more, and a projector, a projection screen and the like need to be independently equipped; the projection screen is generally white and can not be used in an environment with bright light; the function is single, and the expansibility is avoided. The existing electronic blackboard is usually integrated with the display screen as a whole into the blackboard, which is not beneficial to the weight reduction, thinning and installation of the weight of the blackboard.

Disclosure of Invention

The utility model aims at providing a touch-control blackboard is write to big breadth, this big breadth write the touch-control blackboard and simplified the flow of production, be convenient for process, very big improvement production efficiency, saving manufacturing cost, can also reduce medium plate and liquid crystal display panel deformation under the influence of environmental factor to improve definition and the touch-control of demonstration, user experience are good.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a large-breadth writing touch control blackboard comprises at least one writing board and at least one interactive board, wherein the writing board and the interactive board are respectively installed and fixed through respective outer frame frames;

the interactive board comprises a writing panel, a touch control film, a liquid crystal panel and a backlight module, wherein the touch control film is positioned between the writing panel and the liquid crystal panel and is pasted on one surface of the writing panel;

the periphery outer sides of the medium plate and the liquid crystal panel are respectively provided with a plurality of fixed blocks, the fixed blocks are fixed at the periphery edges of the writing panel or the touch control film, the periphery outer sides of the medium plate and the liquid crystal panel are respectively provided with a cover plate connected with the fixed blocks, one side of the cover plate is connected with the fixed blocks, and the other side of the cover plate is connected with the periphery edges of the medium plate and the liquid crystal panel in a pressing way;

the backlight module further comprises a substrate, an LED lamp strip, a light guide plate, a light homogenizing film and reflecting paper, wherein the reflecting paper is positioned between the substrate and the light guide plate, the light homogenizing film is positioned on the surface of one side of the light guide plate opposite to the substrate, the LED lamp strip is respectively arranged on the upper side and the lower side of the light guide plate and is respectively arranged on the substrate through a supporting strip;

the LED lamp strip comprises a plurality of LED elements and a circuit board, the LED elements are arranged on the surface of one side of the circuit board at equal intervals, the surface of the other side of the circuit board is connected with the supporting strips in an adhesive mode, and one side of the circuit board provided with the LED elements is arranged face to face with the side surface of the light guide plate;

the movable frame is characterized by further comprising at least one movable plate, a linear guide rail and at least one movable block which is distributed at intervals are arranged between the upper end face of the movable plate and the upper end face of the outer frame, and the linear guide rail is embedded into the movable block or the movable block is embedded into the linear guide rail;

the lower end of the supporting strip is provided with a first flanging part which is bent back to one side opposite to the light guide plate, the lower surface of the first flanging part is in contact with the surface of the substrate, the first flanging part is fixedly connected with the substrate, and the supporting strip is an aluminum supporting strip;

the LED lamp strip is characterized by further comprising at least two adjusting plates, wherein the adjusting plates are arranged between the base plate and the reflecting paper, so that the LED elements of the LED lamp strip are aligned with the light guide plate in the vertical direction.

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

1. in the scheme, the diffusion film and the brightness enhancement film are stacked above the light-homogenizing film.

2. In the above solution, an elastic cushion layer is arranged between the lower surface of the cover plate and the upper surface of the liquid crystal panel.

3. In the above scheme, the four cover plates are respectively connected with the fixing block through a screw.

4. In the above scheme, the upper end of the supporting bar is provided with a second flanging part which is bent towards one side of the light guide plate, and the lower surface of the second flanging part is in contact connection with the light-equalizing film above the light guide plate.

5. In the above scheme, the number of regulating plates is 3, and the regulating plates are respectively positioned at the upper edge and the lower edge of the substrate and at the middle part of the substrate.

6. In the above scheme, the touch film is connected with the writing panel in an adhesive manner.

7. In the above scheme, the fixed block is fixedly bonded with the touch control film through the double faced adhesive tape.

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 breadth writing touch-control blackboard, the lower extreme of its support bar has the first turn-ups portion of bending back to one side of the light guide plate earlier on, the lower surface of this first turn-ups portion and the surface contact of base plate and this first turn-ups portion and base plate fixed connection, the support bar is the aluminium support bar, through the setting of aluminium support bar and its first turn-ups portion, can be with the heat of LED lamp area lasting, quick transfer to large tracts of land base plate, realized producing the quick, even heat dissipation of heat to LED lamp area, avoid using the equipment of backlight unit of the invention, such as the touch-control blackboard influences other device performances because the heat dissipation is not smooth, can also reduce the use of other heat dissipation modules simultaneously, both practice thrift the cost, can thin the thickness of equipment again, optimize the user experience of product; furthermore, the upper end of the supporting bar is provided with a second flanging part bent towards one side of the light guide plate, the lower surface of the second flanging part is in contact connection with the light equalizing film above the light guide plate, and the supporting bar is enabled to have the effect of limiting the light guide plate and the optical diaphragm at the same time through the arrangement of the second flanging part, so that the positioning of the light guide plate and the optical diaphragm is realized under the condition of not increasing any cost, and the production efficiency is improved.

2. The utility model discloses touch-control blackboard is write by a wide margin, it is provided with two at least regulating plates, this regulating plate sets up between base plate and reflecting paper, make the LED component in LED lamp area and light guide plate align the setting in vertical direction, through the setting of regulating plate, can guarantee that the light that the LED component sent jets into the light guide plate from light guide plate side central authorities all the time, thereby guarantee the light uniformity nature of light guide plate and light-equalizing membrane offside income light source, make the dispersion more of light source even and stable, further guarantee to use the backlight module of the invention to have good display effect.

3. The utility model discloses big breadth writes touch-control blackboard, it peels off liquid crystal display panel from traditional LCD to assemble into independent module through the apron with writing panel, touch-control membrane, cooperates backlight unit, just can realize touch-control and display operation, has simplified the flow of production, the processing of being convenient for, very big improvement production efficiency, saving manufacturing cost; meanwhile, the deformation of the dielectric plate and the liquid crystal panel under the influence of environmental factors can be reduced, so that the display definition and the touch precision are improved, and the user experience is good; furthermore, the liquid crystal panel is convenient to maintain and replace, the replacement of the liquid crystal panel cannot generate adverse effects on other components such as the touch control film, and the cost of maintenance is reduced.

Drawings

FIG. 1 is a schematic structural view of a large-format writing touch blackboard of the present invention;

fig. 2 is a schematic structural view of a backlight module in a large-format writing touch blackboard of the present invention;

fig. 3 is a side view of a partial structure of a large-format writing touch blackboard according to the present invention;

FIG. 4 is a side view of a backlight module structure in a large-format writing touch blackboard according to the present invention;

FIG. 5 is a structural side view II of a backlight module in a large-format writing touch blackboard according to the present invention;

fig. 6 is a side view of the local structure of the large-format writing touch blackboard of the present invention.

In the above drawings: 1. a writing board; 2. an interactive plate; 3. an outer frame; 4. a movable plate; 5. a linear guide rail; 6. a movable block; 1a, a writing panel; 2a, a touch control film; 3a, a dielectric plate; 4a, a liquid crystal panel; 5a, fixing blocks; 6a, a cover plate; 7a, a screw; 10a, a backlight module; 1b, a substrate; 2b, an LED lamp strip; 2b1, LED element; 2b2, circuit board; 3b, a light guide plate; 4b, a light homogenizing film; 5b, reflective paper; 6b, supporting strips; 6b1, a first flanging part; 6b2, second flanging part; 7b, a diffusion film; 8b, a brightness enhancement film; 9b, an adjusting plate.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, 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 specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1: a large-breadth writing touch control blackboard comprises at least one writing board 1 and at least one interactive board 2, wherein the writing board 1 and the interactive board 2 are respectively installed and fixed through respective outer frame frames 3;

the interactive plate 2 comprises a writing panel 1a, a touch film 2a, a liquid crystal panel 4a and a backlight module 10a, wherein the touch film 2a is positioned between the writing panel 1a and the liquid crystal panel 4a and is pasted on one surface of the writing panel 1a, the backlight module 10a is arranged on one side, opposite to the touch film 2a, of the liquid crystal panel 4a, and a transparent dielectric plate 3a is also arranged between the touch film 2a and the liquid crystal panel 4 a;

a plurality of fixing blocks 5a are respectively arranged on the outer sides of the peripheries of the dielectric plate 3a and the liquid crystal panel 4a, the fixing blocks 5a are fixed at the edges of the peripheries of the writing panel 1a or the touch control film 2a, cover plates 6a connected with the fixing blocks 5a are respectively arranged on the outer sides of the peripheries of the dielectric plate 3a and the liquid crystal panel 4a, one side of each cover plate 6a is connected with the corresponding fixing block 5a, and the other side of each cover plate 6a is connected with the edges of the peripheries of the dielectric plate 3a and the liquid crystal panel 4a in a pressing;

the backlight module 10a further comprises a substrate 1b, an LED strip 2b, a light guide plate 3b, a light-equalizing film 4b and a piece of reflective paper 5b, wherein the reflective paper 5b is located between the substrate 1b and the light guide plate 3b, the light-equalizing film 4b is located on a side surface of the light guide plate 3b opposite to the substrate 1b, and the LED strip 2b is respectively arranged on the upper side and the lower side of the light guide plate 3b and is respectively mounted on the substrate 1b through a supporting strip 6 b;

the LED lamp strip 2b comprises a plurality of LED elements 2b1 and a circuit board 2b2, the LED elements 2b1 are mounted on one side surface of the circuit board 2b2 at equal intervals, the other side surface of the circuit board 2b2 is connected with a supporting strip 6b in an adhering mode, and one side of the circuit board 2b2 on which the LED elements 2b1 are mounted is arranged in a face-to-face mode with the side surface of the light guide plate 3 b;

the movable frame further comprises at least one movable plate 4, a linear guide rail 5 and at least one movable block 6 which is distributed at intervals are arranged between the upper end face of the movable plate 4 and the upper end face of the outer frame 3, and the linear guide rail 5 is embedded into the movable block 6 or the movable block 6 is embedded into the linear guide rail 5;

the lower end of the supporting strip 6b is provided with a first flanging part 6b1 bent towards one side opposite to the light guide plate 3b, the lower surface of the first flanging part 6b1 is in contact with the surface of the substrate 1b, the first flanging part 6b1 is fixedly connected with the substrate 1b, and the supporting strip 6b is an aluminum supporting strip;

at least two adjusting plates 9b are further provided, and the adjusting plates 9b are disposed between the substrate 1b and the reflective paper 5b, so that the LED elements 2b1 of the LED strip 2b are aligned with the light guide plate 3b in the vertical direction, that is, the center lines of the LED elements and the light guide plate are in the same plane.

A diffusion film 7b and a brightness enhancement film 8b are stacked above the light uniformizing film 4 b; an elastic cushion layer is arranged between the lower surface of the cover plate 6a and the upper surface of the liquid crystal panel 4 a; the four cover plates 6a are respectively connected with the fixed block 5a through screws 7 a; the touch control film 2a is connected with the writing panel 1a in an adhesive manner; the fixing block 5a is fixedly bonded with the touch control film 2a through a double-sided adhesive tape.

Example 2: a large-breadth writing touch control blackboard comprises at least one writing board 1 and at least one interactive board 2, wherein the writing board 1 and the interactive board 2 are respectively installed and fixed through respective outer frame frames 3;

The upper end of the supporting strip 6b is provided with a second flanging part 6b2 bent towards one side of the light guide plate 3b, and the lower surface of the second flanging part 6b2 is in contact connection with the light-equalizing film 4b above the light guide plate 3 b; the number of the adjusting plates 9b is 3, and the adjusting plates are respectively positioned at the upper edge and the lower edge of the base plate 1b and in the middle of the base plate 1 b.

When the large-breadth writing touch blackboard is adopted, the aluminum support bars and the first flanging parts thereof are arranged, so that the heat of the LED lamp strip can be continuously and quickly transferred to the large-area substrate, the heat generated by the LED lamp strip can be quickly and uniformly radiated, the influence on the performance of other devices caused by unsmooth radiation of equipment using the backlight module, such as the touch blackboard, can be avoided, meanwhile, the use of other radiating modules can be reduced, the cost is saved, the thickness of the equipment can be reduced, and the user experience of products can be optimized; furthermore, the second flanging parts are arranged, so that the supporting strips have the function of limiting the light guide plate and the optical diaphragm at the same time, the positioning of the light guide plate and the optical diaphragm is realized under the condition of not increasing any cost, and the production efficiency is improved;

in addition, through the arrangement of the adjusting plate, light rays emitted by the LED elements can be ensured to be always emitted into the light guide plate from the center of the side face of the light guide plate, so that the light uniformity of the light source entering the light guide plate and the light-equalizing film on the opposite side is ensured, the light source is more uniformly dispersed and stable, and the backlight module provided by the invention is further ensured to have a good display effect;

in addition, the liquid crystal panel is stripped from the traditional liquid crystal display, and is assembled into an independent module together with the writing panel and the touch film through the cover plate, and the touch and display operation can be realized by matching with the backlight module, so that the production flow is simplified, the processing is convenient, the production efficiency is greatly improved, and the production cost is saved; meanwhile, the deformation of the dielectric plate and the liquid crystal panel under the influence of environmental factors can be reduced, so that the display definition and the touch precision are improved, and the user experience is good; furthermore, the liquid crystal panel is convenient to maintain and replace, the replacement of the liquid crystal panel cannot generate adverse effects on other components such as the touch control film, and the cost of maintenance is reduced.

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-breadth writing touch blackboard is characterized in that: the writing board comprises at least one writing board (1) and at least one interactive board (2), wherein the writing board (1) and the interactive board (2) are respectively installed and fixed through respective outer frame frames (3);

the interactive plate (2) comprises a writing panel (1 a), a touch film (2 a), a liquid crystal panel (4 a) and a backlight module (10 a), wherein the touch film (2 a) is positioned between the writing panel (1 a) and the liquid crystal panel (4 a) and is pasted on one surface of the writing panel (1 a), the backlight module (10 a) is arranged on one side, opposite to the touch film (2 a), of the liquid crystal panel (4 a), and a transparent dielectric plate (3 a) is further arranged between the touch film (2 a) and the liquid crystal panel (4 a);

the periphery outer sides of the dielectric plate (3 a) and the liquid crystal panel (4 a) are respectively provided with a plurality of fixing blocks (5 a), the fixing blocks (5 a) are fixed at the periphery edges of the writing panel (1 a) or the touch control film (2 a), the periphery outer sides of the dielectric plate (3 a) and the liquid crystal panel (4 a) are respectively provided with a cover plate (6 a) connected with the fixing blocks (5 a), one side of the cover plate (6 a) is connected with the fixing blocks (5 a), and the other side of the cover plate is connected with the periphery edges of the dielectric plate (3 a) and the liquid crystal panel (4 a) in a pressing mode;

the backlight module (10 a) further comprises a substrate (1 b), an LED lamp strip (2 b), a light guide plate (3 b), a light homogenizing film (4 b) and reflecting paper (5 b), wherein the reflecting paper (5 b) is positioned between the substrate (1 b) and the light guide plate (3 b), the light homogenizing film (4 b) is positioned on the surface of one side, back to the substrate (1 b), of the light guide plate (3 b), the LED lamp strip (2 b) is respectively arranged on the upper side and the lower side of the light guide plate (3 b) and is respectively installed on the substrate (1 b) through a supporting strip (6 b);

the LED lamp strip (2 b) comprises a plurality of LED elements (2 b 1) and a circuit board (2 b 2), the LED elements (2 b 1) are mounted on one side surface of the circuit board (2 b 2) at equal intervals, the other side surface of the circuit board (2 b 2) is connected with the supporting bar (6 b) in an adhering mode, and one side of the circuit board (2 b 2) provided with the LED elements (2 b 1) is arranged in a face-to-face mode with the side surface of the light guide plate (3 b);

the movable frame is characterized by further comprising at least one movable plate (4), a linear guide rail (5) and at least one movable block (6) distributed at intervals are arranged between the upper end face of the movable plate (4) and the upper end face of the outer frame (3), and the linear guide rail (5) is embedded into the movable block (6) or the movable block (6) is embedded into the linear guide rail (5);

the lower end of the supporting strip (6 b) is provided with a first flanging part (6 b 1) which is bent towards one side opposite to the light guide plate (3 b), the lower surface of the first flanging part (6 b 1) is in contact with the surface of the substrate (1 b), the first flanging part (6 b 1) is fixedly connected with the substrate (1 b), and the supporting strip (6 b) is an aluminum supporting strip;

at least two adjusting plates (9 b) are further provided, and the adjusting plates (9 b) are arranged between the base plate (1 b) and the reflecting paper (5 b) so that the LED elements (2 b 1) of the LED lamp strip (2 b) and the light guide plate (3 b) are aligned in the vertical direction.

2. The large-format writing touch blackboard according to claim 1, wherein: and a diffusion film (7 b) and a brightness enhancement film (8 b) are stacked above the light uniformizing film (4 b).

3. The large-format writing touch blackboard according to claim 1, wherein: an elastic cushion layer is arranged between the lower surface of the cover plate (6 a) and the upper surface of the liquid crystal panel (4 a).

4. The large-format writing touch blackboard according to claim 1, wherein: the four cover plates (6 a) are respectively connected with the fixed block (5 a) through screws (7 a).

5. The large-format writing touch blackboard according to claim 1, wherein: the upper end of the supporting strip (6 b) is provided with a second flanging part (6 b 2) which is bent towards one side of the light guide plate (3 b), and the lower surface of the second flanging part (6 b 2) is in contact connection with the light homogenizing film (4 b) above the light guide plate (3 b).

6. The large-format writing touch blackboard according to claim 1, wherein: the number of the adjusting plates (9 b) is 3, and the adjusting plates are respectively positioned at the upper edge and the lower edge of the base plate (1 b) and in the middle of the base plate (1 b).

7. The large-format writing touch blackboard according to claim 1, wherein: the touch control film (2 a) is connected with the writing panel (1 a) in an adhesive mode.

8. The large format writing touch blackboard according to claim 1 or 4, wherein: the fixed block (5 a) is fixedly bonded with the touch control film (2 a) through a double-sided adhesive tape.