CN212990344U

CN212990344U - High-definition intelligent blackboard

Info

Publication number: CN212990344U
Application number: CN202020237175.5U
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: 2020-03-02
Filing date: 2020-03-02
Publication date: 2021-04-16
Anticipated expiration: 2030-03-02

Abstract

The utility model discloses a high-definition intelligent blackboard, which 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 the backlight module is positioned on one side of the liquid crystal panel, which is opposite to the touch control film; 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 one side surface of the light guide plate back 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 utility model discloses luminous intensity and the stability of light source have been guaranteed to high definition intelligence blackboard, and then guarantee to use the display effect of the equipment of backlight unit of the invention.

Description

High-definition intelligent blackboard

Technical Field

The utility model relates to a high definition intelligence blackboard belongs to education and equips technical field.

Background

The blackboard in the classroom is the teaching tool that the frequency of use is the highest of teacher, and along with the popularization of multimedia teaching in recent years, many schools have also had the multimedia classroom, and the teacher can give the student with PPT and video mode and give class, carries out teaching or interdynamic. The display screen is often integrated into the blackboard as a whole by the existing 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 high definition intelligence blackboard, this high definition intelligence blackboard has guaranteed luminous intensity of light source and stability, and then guarantees to use the display effect of the equipment of backlight unit of the invention.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a high-definition intelligent 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 the backlight module is positioned on one side of the liquid crystal panel, which is opposite to the touch control film;

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 left and right sides of light guide plate is provided with a layering respectively, and the one end of this layering is installed on the base plate, the other end of layering is connected with the equal light film contact on the light guide plate, the layering sets up with the support bar is perpendicular, and the both ends of layering are connected with the both ends contact of support bar respectively, the junction of layering and support bar perhaps the junction of support bar and layering is provided with a bellying, the junction of support bar and layering perhaps the junction of layering and support bar has a depressed part that matches with the bellying, in the bellying embedding depressed part for layering and support bar accordant connection.

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 scheme, the lower end of the support bar is provided with a first flanging part which is bent back to one side of 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 support bar is an aluminum support bar.

3. 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.

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 high definition intelligence blackboard, it is through the setting of aluminium support bar and first turn-over portion, can be with the heat of LED lamp area on the base plate of large tracts of land continuously, quick transfer, realized producing the quick, even heat dissipation of heat to LED lamp area, avoid using equipment of the backlight module of the invention, such as touch-control blackboard influence other device performances because the heat dissipation is not smooth, can also reduce the use of other heat dissipation modules simultaneously, not only save the cost, but also can attenuate the thickness of equipment, optimize the user experience of product; 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.

2. The utility model discloses high definition intelligence blackboard, the setting of its layering provides the location for light guide plate, the membrane of homogenizing light, reflection paper, prevents that it from taking place the skew and influencing the effect of homogenizing light in vertical direction, and bellying or depressed part and support bar upper depression or bellying's cooperation setting on the layering, then can effectively avoid the light of LED component to spill from the junction of holding strip and support bar, guaranteed luminous intensity of light source and stability, and then guarantee to use the display effect of the equipment of this invention backlight unit.

Drawings

FIG. 1 is a schematic structural view of a high-definition intelligent blackboard of the present invention;

FIG. 2 is a schematic structural view of a backlight module in the high-definition intelligent blackboard of the present invention;

FIG. 3 is a sectional view of the high-definition intelligent blackboard according to the present invention;

FIG. 4 is a side view of the high-definition intelligent blackboard of the present invention;

FIG. 5 is a second side view of the high-definition intelligent blackboard in partial structure;

figure 6 is the utility model discloses local structure plan view of high definition intelligence blackboard.

In the above drawings: 1. a writing board; 2. an interactive plate; 3. an outer frame; 1a, a writing panel; 2a, a touch control film; 3a, a liquid crystal panel; 4a, 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; 10b, pressing strips; 13b, a boss; 14b, a recess.

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 high-definition intelligent 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 3a and a backlight module 4a, wherein the touch film 2a is positioned between the writing panel 1a and the liquid crystal panel 3a, and the backlight module 4a is positioned on one side of the liquid crystal panel 3a opposite to the touch film 2 a;

the backlight module 4a further comprises a substrate 1b, an LED lamp strip 2b, a light guide plate 3b, a light homogenizing film 4b and a piece of reflective paper 5b, wherein the reflective paper 5b is positioned between the substrate 1b and the light guide plate 3b, the light homogenizing film 4b is positioned on the surface of one side of the light guide plate 3b opposite to the substrate 1b, the LED lamp strip 2b is respectively arranged on the upper side and the lower side of the light guide plate 3b, and is respectively arranged 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 left and right sides of light guide plate 3b is provided with a layering 10b respectively, and the one end of this layering 10b is installed on base plate 1b, the other end of layering 10b and the equal light membrane 4b contact on the light guide plate 3b are connected, layering 10b sets up with the support bar 6b is perpendicular, and the both ends of layering 10b are connected with the both ends contact of support bar 6b respectively, layering 10b and support bar 6 b's junction perhaps support bar 6b is provided with a bellying 13b with the junction of layering 10b, support bar 6b and layering 10 b's junction perhaps layering 10b and support bar 6 b's junction has a depressed part 14b that matches with bellying 13b, bellying 13b imbeds in the depressed part 14b for layering 10b and support bar 6b accordant connection.

A diffusion film 7b and a brightness enhancement film 8b are stacked above the light uniformizing film 4 b; the lower end of the supporting strip 6b is provided with a first flanging part 6b1 bent towards the opposite side of 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.

Example 2: a high-definition intelligent 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 has a second flanging part 6b2 bent toward 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.

When the high-definition intelligent blackboard is adopted, the heat of the LED lamp strip can be continuously and quickly transferred to the large-area substrate through the aluminum supporting strip and the arrangement of the first flanging part of the aluminum supporting strip, so that the heat generated by the LED lamp strip can be quickly and uniformly radiated, the influence on the performance of other devices due to the unsmooth radiation of equipment such as a touch blackboard using the backlight module disclosed by the invention is 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 is 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, the arrangement of the pressing strips provides positioning for the light guide plate, the light homogenizing film and the reflecting paper, the light homogenizing effect is prevented from being influenced by the deviation in the vertical direction, and the protruding parts or the recessed parts on the pressing strips and the recessed parts or the protruding parts on the supporting strips are arranged in a matched mode, so that light of the LED elements can be effectively prevented from being emitted from the connecting parts of the pressing strips and the supporting strips, the luminous intensity and stability of a light source are guaranteed, and the display effect of equipment using the backlight module is further guaranteed.

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 high definition intelligence blackboard which 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 (3 a) and a backlight module (4 a), wherein the touch film (2 a) is positioned between the writing panel (1 a) and the liquid crystal panel (3 a), and the backlight module (4 a) is positioned on one side, opposite to the touch film (2 a), of the liquid crystal panel (3 a);

the backlight module (4 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 left and right sides of light guide plate (3 b) is provided with a layering (10 b) respectively, and the one end of this layering (10 b) is installed on base plate (1 b), the other end of layering (10 b) is connected with the contact of light homogenizing membrane (4 b) on light guide plate (3 b), layering (10 b) and support bar (6 b) set up perpendicularly, and the both ends of layering (10 b) are connected with the both ends contact of support bar (6 b) respectively, the junction of layering (10 b) and support bar (6 b) perhaps the junction of support bar (6 b) and layering (10 b) is provided with a bellying (13 b), the junction of support bar (6 b) and layering (10 b) perhaps the junction of layering (10 b) and support bar (6 b) has a depressed part (14 b) that matches with bellying (13 b), bellying (13 b) imbeds in depressed part (14 b), so that the compression strip (10 b) is matched and connected with the supporting strip (6 b).

2. The high definition intelligent blackboard of 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 high definition intelligent blackboard of claim 1, wherein: the lower end of the supporting strip (6 b) is provided with a first flanging part (6 b 1) which is bent back to 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.

4. The high definition intelligent blackboard of 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).