CN216486213U - Backlight module device and interactive flat panel - Google Patents
Backlight module device and interactive flat panel Download PDFInfo
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- CN216486213U CN216486213U CN202122785708.0U CN202122785708U CN216486213U CN 216486213 U CN216486213 U CN 216486213U CN 202122785708 U CN202122785708 U CN 202122785708U CN 216486213 U CN216486213 U CN 216486213U
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Abstract
The utility model provides a backlight module device and an interactive flat plate, wherein the backlight module device comprises a light bar, a back plate, a first reflector plate and a second reflector plate; the light bar is arranged at the inner bottom of the back plate, and the first reflector plates are arranged on two sides of the light bar; the lamp strip comprises a refraction sheet, a light source and a main board; the refraction piece and the light source are arranged on the same surface of the mainboard, the refraction piece surrounds the light source, and the second reflection piece is arranged at the lower end of the refraction piece. The lower extreme of refraction piece is provided with the second reflector plate, reflects the light of refraction piece below refraction, avoids the light leak, and the light that the light source sent has all been reflected from whole directions, improves the utilization ratio of light.
Description
Technical Field
The disclosure relates to the technical field of display screens, in particular to a backlight module device and an interactive flat panel.
Background
The existing backlight module comprises a direct type backlight module and a side type backlight module, and the direct type backlight module is widely applied to interactive flat panels (interactive white boards) and televisions due to lower cost.
As shown in fig. 1 to 4, the conventional direct-type backlight module includes a back plate 1.0, a reflective sheet 2.0 and a light bar 6.0, the back plate 1.0 is trapezoidal, the side wall of the back plate 1.0 is provided with a reflector plate 2.0, the reflector plate 2.0 is positioned at the side edge of the lamp strip, the lamp strip comprises a luminescent lamp 4.0, a lens 3.0 and a main plate 5.0, the luminescent lamp 4.0 and the lens 3.0 are welded on the main plate 5.0, the reflector plate 2.0 is provided with a through hole 2.1 for installing the luminescent lamp 4.0 and the lens 3.0, light rays emitted by the luminescent lamp 4.0 are refracted by the lens 3.0, the light generated by the light-emitting lamp 4.0 is utilized after being reflected by the reflector 3.0, but in order to reduce the manufacturing cost, the width of the main board 5.0 is reduced, the facing area of the lens 3.0 and the main board 5.0 is reduced, a light leakage part 7.0 exists between the main board 5.0 and the lens 3.0, so that the light emitted from the light emitting lamp 4.0 does not completely pass through the lens 3.0, resulting in light leakage from the bottom of the lens 3.0 and reduced light utilization.
SUMMERY OF THE UTILITY MODEL
The main objective of the present disclosure is to provide a backlight module device and an interactive flat panel, which can improve the utilization rate of light.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
the present disclosure provides a backlight module device, including a light bar, a back plate, a first reflector plate and a second reflector plate; the light bar is arranged at the inner bottom of the back plate, and the first reflector plates are arranged on two sides of the light bar; the lamp strip comprises a refraction sheet, a light source and a main board; the refraction piece and the light source are arranged on the same surface of the main board, the refraction piece surrounds the light source, and the second reflection piece is arranged at the lower end of the refraction piece.
In the backlight module device, the light source is wrapped by the refraction sheet and the second reflection sheet; part of light emitted by the light source is refracted to the first reflector plate through the refraction plate and then reflected to the light transmission structure through the first reflector plate, and the other part of light is refracted to the second reflector plate through the refraction plate and then reflected to the light transmission structure through the second reflector plate, so that all the light emitted by the light source is diffused to the light transmission structure; the first reflector plates are arranged on two sides of the lamp strip and reflect light which is refracted and is not positioned below the refraction plates; the second reflector plate reflects light refracted below the refraction plate, light leakage is avoided, light emitted by the light source is reflected from all directions, and the utilization rate of the light is improved.
Drawings
FIG. 1 is a front view of a conventional backlight module device;
FIG. 2 is a front view of a prior art light bar;
FIG. 3 is a front view of a prior art reflector sheet;
FIG. 4 is a top view of a conventional backlight module device;
FIG. 5 is a front view of a backlight module device according to an embodiment of the present disclosure;
FIG. 6 is a front view of a reflector in an embodiment of the present disclosure;
FIG. 7 is a top view of a backlight module device according to an embodiment of the disclosure;
FIG. 8 is a partial front view of a first step in the installation of the reflector and light bar in one embodiment of the present disclosure;
fig. 9 is a partial front view of a second step in the installation of the reflector and light bar in one embodiment of the present disclosure.
Wherein:
in FIGS. 1-4, 1.0, the back plate; 2.0, a reflector plate; 2.1, through holes; 3.0, a lens; 4.0, a light-emitting lamp; 5.0, a main board; 6.0, a lamp strip; 7.0, light leakage part;
in fig. 5-9, 1, the back plate; 2. a first reflective sheet; 3. a refracting sheet; 4. a light source; 5. a second reflective sheet; 6. a reflector; 7. a light bar; 8. a light through hole; 9. a main board; 10. a diffusion plate; 11. an optical film.
The objects, features, and advantages of the present disclosure will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the scope of protection of the present disclosure.
It is noted that the terms "one end," "another end," "first," "second," and the like are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Technical solutions between various embodiments in the embodiments of the present disclosure may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present disclosure.
Referring to fig. 5 to 9, in one embodiment, the present disclosure provides a backlight module device including a light bar 7, a back plate 1, a first reflective sheet 2 and a second reflective sheet 5; the light bar 7 is arranged at the inner bottom of the back plate 1, and the first reflector plates 2 are arranged on two sides of the light bar 7; the light bar 7 comprises a refraction sheet 3, a light source 4 and a main board 9; the refraction sheet 3 and the light source 4 are arranged on the same side of the main board 9, the refraction sheet 3 surrounds the light source 4, and the second reflection sheet 2 is arranged at the lower end of the refraction sheet 3.
In this embodiment, the refraction sheet 3 and the light source 4 are disposed on the same surface of the main board 9, the refraction sheet 3 surrounds the light source 4, and the second reflection sheet 5 is disposed at the lower end of the refraction sheet 3, so that the light source 4 is wrapped by the refraction sheet 3 and the second reflection sheet 5; part of light emitted by the light source 4 is refracted to the first reflector plate 2 through the refraction plate 3, then reflected to the light transmission structure through the first reflector plate 2, and part of light is refracted to the second reflector plate 5 through the refraction plate 3, then reflected to the light transmission structure through the second reflector plate 5, so that all the light emitted by the light source 4 is diffused to the light transmission structure; the first reflector plates 2 are arranged on two sides of the light bar 7, and the first reflector plates 2 reflect light which is refracted and is not positioned below the refraction plates 3; the light refracted below the refraction sheet 3 is reflected, so that light leakage is avoided, the light emitted by the light source 4 is totally reflected, and the utilization of the light is improved.
In one embodiment, the backlight module device further comprises a light transmitting structure disposed on the upper portion of the back plate 1.
In this embodiment, the light transmission is arranged on the upper portion of the back plate 1 in the light transmission structure, the light in the back plate 1 is reflected to the light transmission structure through the first reflector plate 2 and the second reflector plate 5, and the light is irradiated on the interactive flat plate more uniformly after passing through the light transmission structure.
In one embodiment, the light transmission structure includes an optical film 11 and a diffusion plate 10, the light emitted from the light source 4 is reflected to the diffusion plate 10 by the first reflection sheet 2 and the second reflection sheet 5, and the optical film 11 is disposed on the diffusion plate 10 at a side away from the light source 4.
In the present embodiment, the light emitted from the light source 4 is reflected to the diffusion plate 10 by the first reflection sheet 2 and the second reflection sheet 5, and the diffusion plate 10 diffuses the light; the optical film 11 is disposed on a side of the diffusion plate 10 away from the light source 4, and light diffused by the diffusion plate 10 is emitted to the optical film 11, and can be irradiated on the interactive flat plate after being diffused again by the optical film 11.
In an embodiment, the light transmission structure further includes a plurality of diffusion particles, the diffusion plate 10 is disposed with the diffusion particles, and the diffusion particles are uniformly disposed on the diffusion plate 10.
In the above embodiment, the light emitted from the light source 4 is reflected to the diffusion plate 10 by the first reflection sheet 2 and the second reflection sheet 5, and the diffusion particles are used to scatter the light. The diffusion plate 10 is provided with one layer of diffusion particles, the diffusion particles are adhered to one surface, close to the second reflection sheet 5, of the diffusion plate 10, the distances between the adjacent diffusion particles are equal, the diffusion particles are adhered to the diffusion plate 10 at equal intervals, the diffusion particles are uniformly arranged on the diffusion plate 10, and after the light passes through the diffusion plate 10, the light emitted by the diffusion plate 10 is more uniform.
In one embodiment, the refraction sheet 3 comprises a lens and a welding part, the lens is welded on the main board 9 through the welding part, and the second reflection sheet 5 is provided with an avoiding position for avoiding the welding part.
In the above embodiment, the welding part is the welding leg, the one end welding of welding leg is on mainboard 9, the welding leg has certain length, there is certain interval between the other end of welding leg and mainboard 9, second reflector plate 5 is located the welding leg and keeps away from the one end of mainboard 9 and the interval department between mainboard 9, be provided with the semicircular position of dodging at the tip of second reflector plate 5, second reflector plate 5 avoids the welding leg through dodging the position, the setting is in interval department, ensure that refraction piece 3 and second reflector plate 5 parcel live light source 4, there is certain distance between second reflector plate 5 and mainboard 9, avoid second reflector plate 5 to influence the work of mainboard 9. The main board 9 is connected with an external power supply to provide electric energy for the light source 4, so that the situation that the light source 4 cannot emit light due to the fact that the main board 9 is short-circuited due to the connection of the second reflector 5 and the main board 9 is avoided.
In one embodiment, the lens further comprises a refractive portion, and the light source 4 comprises an LED (abbreviation for light emitting diode) lamp, the refractive portion surrounding the LED lamp.
In the above embodiment, the refraction portion is connected to an end of the welding portion away from the main board 9, and the refraction portion refracts light emitted from the LED lamp to diffuse the light.
In one embodiment, the first reflective sheet 2 is disposed on the side wall of the back panel 1, and the first reflective sheet 2 extends to the light bar 7 along the bottom of the back panel 1.
In the above embodiment, the first reflective sheet 2 is disposed on the side wall of the back plate 1, and the first reflective sheet 2 extends to the light bar 7 along the bottom of the back plate 1, so as to emit the light refracted by the refraction sheet 3 in the back plate 1, change the path of the light, and ensure that the light irradiates the interactive flat plate.
The first reflector plate 2 and the second reflector plate 5 are integrally formed to form a reflector 6, a light through hole 8 is further formed in the reflector 6, the light through hole 8 is a hollow hole, the light through hole 8 comprises a avoiding position of the second reflector plate 5, and the second reflector plate 5 is located on the side edge of the light through hole 8; when the reflector 6 and the light bar 7 are installed, in the first step, the reflector 6 and the light bar 7 are aligned, so that each light source 4 on the light bar 7 is located in the corresponding light through hole 8 on the reflector, and at this time, it can be seen from fig. 8 that the light source 4 shields the light through hole 8. After the alignment is completed, the second step is performed, the whole reflector 6 is moved to the left, the light through hole 8 is staggered with the light source 4, and the light source 4 is moved to the upper surface of the second reflector 5 along the avoiding position, as can be seen from fig. 9, the light source 4 covers the second reflector 5, so that when the light emitted by the light source 4 is irradiated downwards, the light is irradiated on the second reflector 5. The lamp strip and the reflector 6 are fixed through the two steps, and the first reflector plate 2 and the second reflector plate 5 are correspondingly fixed; the reflector 6 is not fixed any more, so that the material is saved and the installation is convenient.
In one embodiment, the back plate 1 comprises a first plate and a second plate, the first plate and the second plate being connected in a "V" shape; the lamp strip 7 is arranged on the first plate, and the first reflector plate 2 is arranged on the second plate.
In this embodiment, backplate 1 is formed by two boards fixed connection, and two boards are first board and second board respectively, and two boards are connected and are formed with certain angle, form the V-arrangement, have lamp strip 7 on the first board, have first reflector plate 2 on the second board, and the light that light source 4 on lamp strip 7 sent can shine on first reflector plate 2 relative first board slope after seeing through refraction piece 3, improves the utilization ratio of light.
In an embodiment, the present disclosure further provides an interactive flat panel including the backlight module device in any of the above embodiments.
The above description is only a preferred embodiment of the present disclosure, and not intended to limit the scope of the present disclosure, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present disclosure and the accompanying drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present disclosure.
Claims (10)
1. A backlight module device comprises a light bar, a back plate, a first reflector plate and a second reflector plate; the light bar is arranged at the inner bottom of the back plate, and the first reflector plates are arranged on two sides of the light bar; the lamp strip comprises a refraction sheet, a light source and a main board; the refraction piece and the light source are arranged on the same side of the main board, the refraction piece surrounds the light source, and the second reflection piece is arranged at the lower end of the refraction piece.
2. The backlight module device according to claim 1, further comprising a light transmitting structure disposed at an upper portion of the back plate.
3. The backlight module device according to claim 2, wherein the light transmitting structure comprises an optical film and a diffusion plate, the light emitted from the light source is reflected to the diffusion plate by the first and second reflection sheets, and the optical film is disposed on a side of the diffusion plate facing away from the light source.
4. The backlight module device according to claim 3, wherein the light transmitting structure further comprises a plurality of diffusing particles, and the diffusing plate is disposed thereon.
5. The backlight module device according to claim 1, wherein the refraction sheet comprises a lens and a welding portion, the lens is welded on the main board through the welding portion, and an avoiding portion for avoiding the welding portion is provided on the second reflection sheet.
6. The backlight module device according to claim 5, wherein the lens further comprises a refraction portion, the light source comprises an LED lamp, and the refraction portion surrounds the LED lamp.
7. The backlight module device of claim 1, wherein the first reflective sheet is disposed on a sidewall of the back plate, and the first reflective sheet extends to the light bar along a bottom of the back plate.
8. The backlight module device according to claim 1, wherein the first and second reflection sheets are integrally formed.
9. The backlight module device according to claim 1, wherein the back plate comprises a first plate and a second plate, the first plate and the second plate are connected in a "V" shape;
the lamp strip is arranged on the first plate, and the first reflector plate is arranged on the second plate.
10. An interactive tablet comprising the backlight module assembly of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122785708.0U CN216486213U (en) | 2021-11-12 | 2021-11-12 | Backlight module device and interactive flat panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122785708.0U CN216486213U (en) | 2021-11-12 | 2021-11-12 | Backlight module device and interactive flat panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216486213U true CN216486213U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122785708.0U Active CN216486213U (en) | 2021-11-12 | 2021-11-12 | Backlight module device and interactive flat panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216486213U (en) |
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2021
- 2021-11-12 CN CN202122785708.0U patent/CN216486213U/en active Active
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