CN209946432U

CN209946432U - Soft light television breathing display backlight source

Info

Publication number: CN209946432U
Application number: CN201920390947.6U
Authority: CN
Inventors: 卢雪平
Original assignee: Dongguan Emperor Guang Intelligent Display Co Ltd
Current assignee: Dongguan Emperor Guang Intelligent Display Co Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-01-14
Anticipated expiration: 2029-03-26

Abstract

The utility model discloses a subdued light television breathing display backlight source, which comprises a light guide plate and a LED lamp strip detachably connected on the light guide plate, wherein the light guide plate is of an L-shaped structure, the light guide plate is provided with a vertical part and a transverse part integrally extending forwards along the bottom end of the vertical part, and the vertical part and the transverse part are both horizontally extended and arranged along the left and right directions; the LED lamp strip comprises an FPC board and a plurality of first LED elements arranged on the FPC board, the FPC board is arranged on the front side and/or the rear side of the vertical portion, light rays emitted by the first LED elements enter the vertical portion downwards, and then the light rays enter the transverse portion from the rear end of the transverse portion forwards until the light rays exit from the front end face of the transverse portion; the light emitted by the LED element enters from the vertical part and exits from the transverse part, so that the light entering the light guide plate is gradually changed, and then the light is converted from one type of luminance to the other type of luminance, and a smooth visual effect is generated.

Description

Soft light television breathing display backlight source

Technical Field

The utility model relates to a backlight field technique especially indicates a subdued light TV breathes and shows backlight.

Background

The conventional breathing display backlight source generally includes a light guide plate and at least one LED light bar, the light guide plate includes a light exit surface and a light entrance surface, and the light exit surface and the light entrance surface are generally located on opposite sides.

Therefore, a new technical solution needs to be developed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a backlight source for displaying breathing of a soft-light television, which is mainly aimed at providing a backlight source for displaying breathing of a soft-light television, wherein light emitted from an LED element enters from a vertical portion and exits from a horizontal portion, so that light entering a light guide plate gradually changes, and then the light is converted from one type of luminance to another type of luminance, thereby generating a smooth visual effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a subdued light TV breathes and shows backlight, includes light guide plate and the LED lamp area of removable the connecting on the light guide plate, wherein:

the light guide plate is of an L-shaped structure, the light guide plate is provided with a vertical part and a transverse part integrally extending forwards along the bottom end of the vertical part, and the vertical part and the transverse part are horizontally extended along the left-right direction;

the LED lamp area includes the FPC board and sets up a plurality of first LED components on the FPC board, the FPC board sets up on the front side and/or the rear side of vertical portion, and the light of first LED component transmission is gone into by vertical portion down, and the rear end through horizontal portion is forward until the preceding terminal surface light-emitting from horizontal portion again.

Preferably, the upper end surface, the lower end surface, the left side surface and the right side surface of the horizontal portion, and the front side surface, the rear side surface, the top end surface, the left side surface and the right side surface of the vertical portion are covered with a light shielding film.

Preferably, the front end surface of the transverse portion is designed to be large in center and gradually smaller in two sides in a front view state.

Preferably, the upper edge and the lower edge of the front end surface of the transverse part are designed to be gradually changed from the middle to the two ends in an arc shape.

Preferably, the light guide plate is an atomized light guide plate.

Preferably, the light guide plate is prepared by mixing PC and a light diffusion agent and then performing injection molding.

As a preferred scheme, the upper end of FPC board is connected with the extension section in an organic whole, be equipped with a second LED component on the extension section, a plurality of first LED component fixed orificess and a second LED component fixed orifices have been seted up in the vertical portion, the front and rear end of vertical portion are run through to the second LED component fixed orifices, and one of them first LED component inlays in the one end of second LED component fixed orifices among all first LED components, and all the other first LED components are inlayed in first LED component fixed orifices, the second LED component is inlayed in the other end of second LED component fixed orifices through the extension section is bent downwards, and the light that the second LED component transmitted is also gone into light downwards by vertical portion, and the rear end through horizontal portion is forward until the preceding terminal surface light-emitting from horizontal portion again.

As a preferred scheme, be equipped with FPC board mounting groove in the vertical portion, first LED component fixed orifices and a second LED component fixed orifices are all established from the inner wall of FPC board mounting groove is concave to form, the FPC board is installed in FPC board mounting groove.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme: the design of the light guide plate and the LED lamp strip is mainly combined, light emitted by the LED element enters downwards from the vertical part and exits from the transverse part, and then the light is converted from one type of luminance to the other type of luminance, so that a smooth visual effect is generated;

secondly, the light emitting surface of the light guide plate is designed into a structure with a large center and two gradually-reduced sides, so that the gradual-change light effect is presented;

moreover, through the design of the LED element fixing hole, on one hand, the LED element is convenient to install and position; on the other hand, more light beams of the LED element enter the light guide plate, and the LED-out light is increased due to the increase of the light beams entering the light guide plate, so that the lighting effect is improved;

and the scattering effect of the light rays entering the light guide plate is improved through the atomization surface, so that the uniform light emitting is realized on the light emitting surface.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a rear view of a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of a preferred embodiment of the present invention;

FIG. 3 is a schematic view of a first three-dimensional structure of a light guide plate according to a preferred embodiment of the present invention;

FIG. 4 is a schematic diagram of a second three-dimensional structure of a light guide plate according to a preferred embodiment of the present invention;

fig. 5 is a front view of a light guide plate according to a preferred embodiment of the present invention.

The attached drawings indicate the following:

10. light guide plate 11, vertical part

111. First and second LED

element fixing holes

112 and 112

113. FPC board mounting groove 12, transverse part

20. LED lamp strip 21, FPC board

211. Extension 22, first LED element

23. Second LED element 24, bus line

30. And a light shielding film.

Detailed Description

Referring to fig. 1 to 5, a specific structure of a preferred embodiment of the present invention is shown, which is a backlight source for a soft light tv breathing display, including a light guide plate 10 and an LED strip 20 detachably connected to the light guide plate 10, wherein:

the light guide plate 10 is an atomized light guide plate. In this embodiment, the light guide plate 10 is formed by injection molding after mixing and preparing PC and a light diffusing agent, so as to improve the light scattering effect inside the light guide plate 10. It should be noted that the light diffusion agent has a mass percentage content of 2.5-3.5%, and preferably 3% of light diffusion agent is used. Light guide plate 10 is L type structure, light guide plate 10 has vertical portion 11 and the integrative horizontal portion 12 that extends the formation forward in bottom along vertical portion 11, vertical portion 11 and horizontal portion 12 all extend the setting along left right direction level, the inside and outside corner of vertical portion 11 and horizontal portion 12 is fillet, chamfer respectively.

The LED strip 20 comprises an FPC board 21 and a number of first LED elements 22 arranged on the FPC board 21. In this embodiment, the LED strip 20 is provided with one and is a straight strip, the straight strip is arranged along the left-right direction, and all the first LED elements 22 are arranged in a row along the extending direction of the straight strip. Preferably, all first LED elements 22 emit light downwards.

The FPC board is provided on the front side and/or the rear side of the vertical portion 11, and preferably, the FPC board 21 is provided on the rear side of the vertical portion 11. The light emitted from the first LED element 22 enters the vertical portion 11 downward, and then goes forward through the rear end of the horizontal portion 12 until it exits from the front end surface of the horizontal portion 12.

The upper end face, the lower end face, the left side face and the right side face of the transverse portion 12, and the front side face, the rear side face, the top end face, the left side face and the right side face of the vertical portion 11 are all covered with a light shielding film 30. Preferably, the light-shielding film on the lower end face of the lateral portion 12 is a black-and-white double-sided tape, and the rest of the light-shielding films are black-and-white single-sided tapes.

The front end face of the transverse portion 12 is designed to be large in center and gradually smaller in two sides in a front view state. Preferably, the upper edge and the lower edge of the front end surface of the transverse portion 12 are both designed to gradually change from a middle to two ends in an arc shape, and of course, the upper edge and the lower edge may also be designed to gradually change from a straight shape or other shapes. Through the design that the center is large and the two sides are gradually reduced, light is gradually emitted from the center of the transverse portion 12 to the two sides, the brightness is larger when the transverse portion is closer to the center, and the brightness is darker when the transverse portion is closer to the left tail end and the right tail end of the transverse portion 12, so that the effect of gradual brightness change is shown on the light emitting surface, and the layering sense and the space sense of the light emitted by the light guide plate 10 are improved.

In this embodiment, the upper end of the FPC board 21 is integrally connected to an extension 211, and a second LED element 23 is disposed on the extension 211, and preferably, all the second LED elements 23 emit light downward. Seted up a plurality of first LED component fixed orificess 111 and a second LED component fixed orifices 112 on the vertical portion 11, second LED component fixed orifices 112 run through the preceding, the rear end of vertical portion 11, the upper end of vertical portion corresponds the concave groove of stepping down that is equipped with of extension section, and one of them first LED component 22 inlays in the one end of second LED component fixed orifices 112 among all first LED components 22, and all the other first LED components 22 are inlayed in first LED component fixed orifices 111, second LED component 23 inlays in the other end of second LED component fixed orifices 112 through the downward bending of extension section 211, and the light of second LED component 23 transmission is gone into light also by vertical portion 11 downwards, and the rear end through horizontal portion 12 is forward until the preceding terminal surface light-emitting from horizontal portion 12 again.

Be equipped with FPC board mounting groove 113 on vertical portion 11, first LED component fixed orifices 111 and a second LED component fixed orifices 112 are all established from FPC board mounting groove 113's inner wall is concave and are formed, and in this embodiment, FPC board mounting groove 113 locates the rear side of vertical portion 11, consequently, first LED component fixed orifices 111 and a second LED component fixed orifices 112 are all established from FPC board mounting groove 113's inner wall to preceding concave. The FPC board 21 is mounted in the FPC board mounting groove 113, and preferably, the FPC board 21 is attached to an inner wall of the FPC board mounting groove 113.

In this embodiment, a soldering portion is extended from one side of the upper end of the FPC board 21, and the flat cable 24 is soldered on the soldering portion, preferably, the soldering portion is wrapped with an insulating tape by one turn. A plurality of first LED elements 22 and a second LED element 23 which are arranged on the FPC board 21 are externally connected with a controller through a flat cable 24 to control the work, so that the first LED elements 22 show a breathing effect of alternating light and shade, and specifically, the work of the breathing lamp has three states; in the first state, the first LED element 22 is in a breathing effect state with alternating light and shade, and the second LED element 23 is in an off state; in the second state, the first LED element 22 is in an off state, only the second LED element 23 is in an on state, and the second LED element 23 is mainly used for displaying the standby state of the television; the third state is a state in which the first LED element 22 and a second LED element 23, etc. are both on.

The design key points of the utility model lie in that the design is mainly an improved design of the light guide plate, the light emitted by the LED element enters the light downwards from the vertical part and exits from the transverse part, so that the light entering the light guide plate gradually changes, and then the light is converted from one type of brilliance to another type of brilliance, and a smooth visual effect is generated;

secondly, the light emergent surface is designed to be large in center and gradually smaller on two sides in a forward-looking state, so that the effect of gradual change of light and shade is achieved;

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A subdued light TV breathing display backlight source is characterized in that: including light guide plate and detachable connection LED lamp area on the light guide plate, wherein:

2. The subdued television breathing display backlight of claim 1, wherein: the upper end face, the lower end face, the left side face and the right side face of the transverse portion, and the front side face, the rear side face, the top end face, the left side face and the right side face of the vertical portion are all covered with shading films.

3. The subdued television breathing display backlight of claim 1, wherein: the front end face of the transverse part is designed to be large in center and gradually smaller on two sides in a front view state.

4. The subdued television breathing display backlight of claim 3, wherein: the upper edge and the lower edge of the front end face of the transverse part are designed in a mode that arcs gradually change from the middle to the two ends.

5. The subdued television breathing display backlight of claim 1, wherein: the light guide plate is an atomized light guide plate.

6. The subdued television breathing display backlight of claim 5, wherein: the light guide plate is prepared by mixing PC and light diffusant and then performing injection molding.

7. The subdued television breathing display backlight of claim 1, wherein: the utility model discloses a LED light source, including FPC board, extension section, vertical portion, first LED component fixed orifices, second LED component fixed orifices, first LED component fixed orifices and second LED component fixed orifices have been seted up in vertical portion, the second LED component fixed orifices runs through the front and rear end of vertical portion, and the one end in second LED component fixed orifices is inlayed to one of them first LED component among all first LED components, and all the other first LED components are inlayed in first LED component fixed orifices, the second LED component is inlayed in the other end of second LED component fixed orifices through extending the section and bending downwards, and the light of second LED component transmission is also gone into by vertical portion downwards, and the rear end through horizontal portion is forward until the preceding terminal surface light-emitting from horizontal portion again.

8. The subdued television breathing display backlight of claim 7, wherein: be equipped with FPC board mounting groove in the vertical portion, first LED component fixed orifices and a second LED component fixed orifices are all established from the inner wall of FPC board mounting groove is concave to form, the FPC board is installed in FPC board mounting groove.