CN212694386U - Light and thin touch blackboard - Google Patents
Light and thin touch blackboard Download PDFInfo
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- CN212694386U CN212694386U CN202020236738.9U CN202020236738U CN212694386U CN 212694386 U CN212694386 U CN 212694386U CN 202020236738 U CN202020236738 U CN 202020236738U CN 212694386 U CN212694386 U CN 212694386U
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Abstract
The utility model discloses a light and thin touch 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; backlight unit further includes base plate, LED lamp area, light guide plate, the membrane and the reflection paper of making uniform light, the opposite side surface and the support bar adhesive bonding of circuit board are located and are opened the second installation through-hole that corresponds with first installation through-hole on the base plate under the light guide plate, all open the through-hole that corresponds with first installation through-hole, second installation through-hole on the membrane and the reflection paper of making uniform light. The utility model discloses frivolous type touch-control blackboard can prevent to take place relative skew and influence the light-equalizing effect on the horizontal direction between light guide plate and all kinds of blooming, and then guarantees to adopt the display effect of the backlight unit equipment of the invention.
Description
Technical Field
The utility model relates to a frivolous type touch-control 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 frivolous type touch-control blackboard, this frivolous type touch-control blackboard can prevent to take place relative skew and influence the light-equalizing effect between light guide plate and all kinds of blooming in the horizontal direction, and then guarantees to adopt the display effect of the backlight unit equipment of the invention.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a light and thin touch 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 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 utility model discloses a light guide plate, including light guide plate, light homogenizing film, reflection paper, the edge of the left and right sides of light guide plate has opened the first installation through-hole of a plurality of respectively, and it has the second installation through-hole that corresponds with first installation through-hole to be located to open on the base plate under the light guide plate, all open the through-hole that corresponds with first installation through-hole, second installation through-hole on light homogenizing film and the reflection paper.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the first mounting through hole is a strip-shaped through hole.
2. In the above scheme, the first mounting through hole is slightly larger than the second mounting through hole.
3. In the above scheme, a stud is embedded in the second mounting through hole, and the stud sequentially passes through the through hole in the reflective paper, the first mounting through hole and the through hole in the light-equalizing film.
4. In the scheme, the diffusion film and the brightness enhancement film are stacked above the light-homogenizing film.
5. 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.
6. In the scheme, the left side and the right side of the light guide plate are respectively provided with a pressing strip, one end of each pressing strip is arranged on the base plate, and the other end of each pressing strip is in contact connection with the light equalizing film on the light guide plate.
7. In the scheme, the cross section of the pressing strip is a Z-shaped cross section.
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 frivolous type touch-control 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 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, not only saved 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 frivolous type touch-control blackboard, its setting through each through-hole can further be to fixing light guide plate, light equalizing membrane, reflection paper and base plate earlier, prevents to take place relative migration and influence the light equalizing effect on the horizontal direction between light guide plate and all kinds of blooming, and then guarantees to adopt the display effect of this invention backlight unit equipment.
Drawings
FIG. 1 is a schematic structural view of a thin and light touch blackboard of the present invention;
fig. 2 is a schematic structural view of a backlight module in a light and thin touch blackboard according to the present invention;
FIG. 3 is a sectional view of the thin and light touch blackboard according to the present invention;
FIG. 4 is a side view of the thin and light touch blackboard of the present invention;
FIG. 5 is a second side view of the thin and light touch blackboard;
figure 6 is the utility model discloses local structure plan view of frivolous type touch-control 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; 11b, a first mounting through hole; 12b, second mounting through holes.
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 light and thin touch 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 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;
the edge of the left and right sides of light guide plate 3b has opened the first installation through-hole 11b of a plurality of respectively, and it has the second installation through-hole 12b that corresponds with first installation through-hole 11b to open on the base plate 1b that is located under light guide plate 3b, all open the through-hole that corresponds with first installation through-hole 11b, second installation through-hole 12b on membrane 4b and the reflection paper 5b of homogenizing.
A stud is embedded into the second mounting through hole 12b and sequentially penetrates through a through hole in the reflecting paper 5b, the first mounting through hole 11b and a through hole in the light-equalizing film 4 b; a diffusion film 7b and a brightness enhancement film 8b are stacked above the light uniformizing film 4 b; the left side and the right side of the light guide plate 3b are respectively provided with a pressing strip 10b, one end of the pressing strip 10b is installed on the base plate 1b, and the other end of the pressing strip 10b is in contact connection with the light homogenizing film 4b on the light guide plate 3 b.
Example 2: a light and thin touch 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 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;
the edge of the left and right sides of light guide plate 3b has opened the first installation through-hole 11b of a plurality of respectively, and it has the second installation through-hole 12b that corresponds with first installation through-hole 11b to open on the base plate 1b that is located under light guide plate 3b, all open the through-hole that corresponds with first installation through-hole 11b, second installation through-hole 12b on membrane 4b and the reflection paper 5b of homogenizing.
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 left side and the right side of the light guide plate 3b are respectively provided with a pressing strip 10b, one end of the pressing strip 10b is arranged on the substrate 1b, and the other end of the pressing strip 10b is in contact connection with the light homogenizing film 4b on the light guide plate 3 b; the cross section of the bead 10b is a zigzag cross section.
When the light and thin touch blackboard is adopted, the aluminum support bars and the first flanging parts of the aluminum support bars can continuously and quickly transfer the heat of the LED lamp strip to a large-area substrate, so that 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 through holes, the light guide plate, the light equalizing film, the reflecting paper and the substrate can be further fixed in a pair mode, the light equalizing effect is prevented from being influenced by relative offset between the light guide plate and various optical films in the horizontal direction, and the display effect of the backlight module device 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 (8)
1. The utility model provides a light and thin type touch-control 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 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;
the utility model discloses a light guide plate (3 b) is installed to the left and right sides edge of light guide plate (3 b) has first installation through-hole of a plurality of (11 b) respectively, and it has second installation through-hole (12 b) that correspond with first installation through-hole (11 b) to open on base plate (1 b) that is located under light guide plate (3 b), all open the through-hole that corresponds with first installation through-hole (11 b), second installation through-hole (12 b) on light homogenizing membrane (4 b) and reflection paper (5 b).
2. The lightweight thin touch blackboard according to claim 1, wherein: the first mounting through hole (11 b) is a strip-shaped through hole.
3. The lightweight thin touch blackboard according to claim 1 or 2, wherein: the first mounting through hole (11 b) is slightly larger than the second mounting through hole (12 b).
4. The lightweight thin touch blackboard according to claim 1, wherein: a stud is embedded in the second mounting through hole (12 b), and the stud sequentially penetrates through the through hole in the reflecting paper (5 b), the first mounting through hole (11 b) and the through hole in the light homogenizing film (4 b).
5. The lightweight thin 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).
6. The lightweight thin 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).
7. The lightweight thin touch blackboard according to claim 1 or 6, wherein: the left side and the right side of the light guide plate (3 b) are respectively provided with a pressing strip (10 b), one end of the pressing strip (10 b) is installed on the base plate (1 b), and the other end of the pressing strip (10 b) is in contact connection with the light homogenizing film (4 b) on the light guide plate (3 b).
8. The lightweight thin touch blackboard according to claim 7, wherein: the cross section of the pressing strip (10 b) is a Z-shaped cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020236738.9U CN212694386U (en) | 2020-03-02 | 2020-03-02 | Light and thin touch blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020236738.9U CN212694386U (en) | 2020-03-02 | 2020-03-02 | Light and thin touch blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212694386U true CN212694386U (en) | 2021-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020236738.9U Active CN212694386U (en) | 2020-03-02 | 2020-03-02 | Light and thin touch blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212694386U (en) |
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2020
- 2020-03-02 CN CN202020236738.9U patent/CN212694386U/en active Active
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