CN218914627U - Backlight, backlight module and display device - Google Patents

Abstract

The utility model relates to a backlight, a backlight module and display equipment, which comprises a lamp strip, wherein the lamp strip comprises a lens, and the lens is provided with a main body and press-connection pins which are convexly arranged on the main body; the reflector plate, the reflector plate range upon range of set up in on the lamp strip, the reflector plate is equipped with dodges the through-hole, dodge the pore wall of through-hole and be equipped with towards the shielding part that hole heart direction extends, shielding part is pressed close to the main part sets up, the lens is followed dodge the through-hole exposes, the crimping foot withhold in shielding part's top, in order to realize the lens will the reflector plate buckle is fixed in the backplate. Because the hole wall of the avoidance through hole is provided with the shielding part, the shielding part is arranged in an extending mode close to the main body, so that the gap between the reflecting sheet and the lens can be reduced, namely, the shielding part forms a shielding effect on the gap between the reflecting sheet and the back plate, the light leakage quantity can be effectively reduced, the generation of vertical and horizontal shadows of the whole machine is avoided, and the purposes of improving and improving the display effect are achieved.

Description

Backlight, backlight module and display device

Technical Field

The present utility model relates to the field of backlight display technologies, and in particular, to a backlight, a backlight module, and a display device.

Background

Currently, there are a wide variety of display devices on the market that play a very important role as direct media for information interaction with users. The display device is lighted through the backlight module, the backlight lamp in the existing part of backlight module can adopt the installation scheme of clamping the reflector plate by the lens, specifically, firstly, the through hole is formed on the reflector plate, the outer flange is designed by the lens of the backlight lamp, after the reflector plate and the PCB of the backlight lamp are stacked and placed, the reflector plate is clamped and fixed by pressing the outer flange and the hole edge of the through hole up and down, and finally, a plurality of double faced adhesive tapes are stuck on the back surface of the reflector plate to bond and fix the reflector plate, so that the reflector plate installation operation is completed.

However, the inner side of the back plate is often provided with a plurality of ribs to increase the stiffness and strength of the back plate. When the lens of the backlight is just positioned at the convex rib position, the lens can be jacked up by the convex rib to cause the increase of the gap between the reflecting sheet and the back plate, thereby increasing the light leakage quantity, generating vertical and horizontal shadows of the whole machine and influencing the display effect.

Disclosure of Invention

Based on this, it is necessary to provide a backlight, a backlight module and a display device, which are aimed at solving the problems of the prior art that the gap between the reflector and the back plate is too large, which results in increased light leakage, vertical and horizontal shadows, and influence on the display effect.

In one aspect, the present application provides a backlight for mounting on a back plate, the backlight comprising:

the lamp strip comprises a lens, wherein the lens is provided with a main body and press-connection pins which are convexly arranged on the main body; and

the reflector plate, the reflector plate range upon range of set up in on the lamp strip, just the reflector plate is equipped with dodges the through-hole, dodge the pore wall of through-hole and be equipped with towards the hole heart orientation extension shelter from the portion, shelter from the portion press close to the main part sets up, the lens is followed dodge the through-hole exposes, just the crimping foot withhold in shelter from the top of portion, in order to realize the lens will the reflector plate buckle is fixed in the backplate.

The backlight lamp of the scheme is used for being assembled on the back plate to form the backlight module, during processing, the lamp strip is placed on the back plate, the reflecting sheet is stacked above the lamp strip, the relative positions of the lamp strip and the reflecting sheet are adjusted, the lens can be exposed from the avoidance through hole, the press-connection pin passes through the avoidance through hole and is buckled above the shielding part of the reflecting sheet, and therefore the lens can be fixedly installed on the back plate through buckling of the reflecting sheet. On this basis, even if the lens is located the protruding muscle position of backplate just, when leading to the space between reflector plate and the backplate too big and have the light leak defect, owing to dodge the pore wall of through-hole and be formed with shielding part, shielding part is because press close to main part extension setting to can reduce the clearance between reflector plate and the lens, also shielding part forms the effect of sheltering from to the space between reflector plate and the backplate promptly, thereby just can effectively reduce the light leakage amount, avoid producing the vertical horizontal shadow of complete machine, reach the purpose of improving and promoting the display effect.

The technical scheme of the application is further described below:

in one embodiment, the shielding parts are arranged in two, the two shielding parts are symmetrically arranged with the hole center of the avoidance through hole as the center, the two crimping feet are arranged, and the crimping feet are buckled above the shielding parts in one-to-one correspondence.

In one embodiment, the shielding part is provided with an opening and closing slit in a direction away from the hole center of the avoidance through hole, and the opening and closing slit is used for enabling the press-connection pin to pass through the reflecting sheet and be buckled to the upper side of the shielding part.

In one embodiment, the two shielding parts are provided with the opening and closing slits.

In one embodiment, the two opening and closing slits are symmetrically arranged or arranged in a dislocation manner; and/or

The two open and close seams are both straight seams or arc seams; and/or

One of the two open and close slits is provided as a straight slit and the other is provided as an arc slit.

In one embodiment, the opening and closing slit has an opening end and a closing end which are oppositely arranged, a first interval is formed between the closing end and a hole center of the avoidance through hole, a second interval is formed between the outermost edge of the crimping pin and the hole center of the avoidance through hole, and the first interval is not smaller than the second interval.

In one embodiment, the hole wall of the avoidance through hole is further provided with an avoidance concave part concavely arranged in the direction away from the hole center, and the avoidance concave part is in avoidance fit with the lens.

In one embodiment, the light bar further comprises a PCB and a light emitter, wherein the light emitter is disposed on the PCB, and the lens is disposed on the PCB and covers the light emitter.

On the other hand, the application also provides a backlight module, which comprises the backlight lamp.

In addition, the application also provides display equipment, which comprises the backlight module.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an assembled structure of a backlight according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an assembled structure of the lens and the reflector in FIG. 1;

fig. 3 is a schematic structural view of a reflective sheet in the present application.

Reference numerals illustrate:

10. a light bar; 11. a PCB; 12. a lens; 121. a main body; 122. a press-fit pin; 13. a light emitting body; 20. a back plate; 21. convex ribs; 30. a reflection sheet; 31. avoiding the through hole; 311. a shielding part; 312. opening and closing the seam; 312a, an open end; 312b, closed end; 313. avoiding the concave part; 40. a gap.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

Referring to fig. 1 to 3, a backlight is shown in an embodiment of the present application, and is configured to be mounted on a back plate 20, and specifically, mounted on an inner side of the back plate 20. Illustratively, the backlight includes a light bar 10 and a reflective sheet 30.

In this embodiment, the light bar 10 includes a lens 12, a PCB 11, and a light 13. The PCB 11 plays a role of a light emission control main board for controlling the light emitting body 13 to perform a light emission operation. The light emitting body 13 is disposed on the PCB 11, and it can be understood that the light emitting body 13 and the PCB 11 form an electrical connection, and the connection manner includes, but is not limited to, soldering, pin plugging, and the like.

Alternatively, the light 13 may be, but is not limited to, a bead, a strip, or the like. For example, in this embodiment, the light emitting body 13 adopts a lamp bead, which may be an LED lamp bead specifically, and has the advantages of energy saving and consumption reduction. The number and arrangement of the lamp beads can be flexibly selected according to actual needs, and thus are not particularly limited herein.

The lens 12 is disposed on the PCB 11 and covers the outside of the light-emitting body 13. The light emitted from the light emitter 13 is refracted by the lens 12 and then emitted, and the lens 12 can increase the uniformity of the light emission and the light emission area. The lens 12 and the PCB 11 can be assembled in various ways, for example, in this embodiment, the lens 12 is adhered and fixed on the PCB 11 by using glue or double sided tape as a medium, the mounting manner is simple, the connection is firm and reliable, and no physical trauma (such as perforation) is caused to the PCB 11 and the lens 12.

In addition, the lens 12 has a body 121 and press-fit pins 122 convexly provided on the body 121; and the reflector plate 30 is laminated on the light bar 10, the reflector plate 30 is provided with an avoidance through hole 31, the hole wall of the avoidance through hole 31 is provided with a shielding part 311 extending towards the hole center direction, the shielding part 311 is arranged close to the main body 121, the lens 12 is exposed from the avoidance through hole 31, and the press-connection pins 122 are buckled above the shielding part 311, so that the lens 12 is used for buckling and fixing the reflector plate 30 on the back plate 20. Further, in order to enhance the mounting strength of the reflective sheet 30, after the press-bonding pins 122 are pressed over the shielding portions 311 of the reflective sheet 30, a quantity of double-sided adhesive may be adhered to the reflective sheet 30, so that the reflective sheet 30 is adhesively fixed to the back plate 20.

In summary, implementing the technical scheme of the embodiment has the following beneficial effects: the backlight lamp of the above-mentioned scheme is used for assembling to the backplate 20 thereby constitutes backlight unit, and during the processing, places lamp strip 10 in backplate 20, immediately stacks up the reflector plate 30 and arranges the relative position of lamp strip 10 top and good two, makes lens 12 can follow dodge through-hole 31 and expose, and then passes through dodge through-hole 31 with the crimping foot 122 and withhold to the shielding portion 311 top of reflector plate 30, just can realize that lens 12 will reflector plate 30 buckle fixed mounting on backplate 20. On this basis, even if the lens 12 is just located at the convex rib 21 position of the back plate 20, when the gap between the reflector plate 30 and the back plate 20 is too large and light leakage defect exists, the shielding part 311 is formed on the wall of the avoidance through hole 31, and the shielding part 311 is arranged in an extending mode close to the main body 121, so that the gap 40 between the reflector plate 30 and the lens 12 can be reduced, that is, the shielding effect is formed on the gap between the reflector plate 30 and the back plate 20 by the shielding part 311, the light leakage quantity can be effectively reduced, the occurrence of vertical and horizontal shadow of the whole machine is avoided, and the purposes of improving and improving the display effect are achieved.

It should be noted that, since the back plate 20 is usually made of a thin metal or non-metal plate, there is a certain stiffness loss, and based on this, manufacturers choose to make a plurality of ribs 21 distributed in the transverse and longitudinal directions on the inner side of the back plate 20 to improve the stiffness and strength of the back plate 20. It is easy for the lens 12 to be positioned just above the ribs 21 or obliquely above the ribs to increase the space between the reflective sheet 30 and the back plate 20, which is formed by the cavity between two adjacent ribs 21 and the inner surface of the reflective sheet 30.

On the basis of the above embodiment, two shielding portions 311 are provided, the two shielding portions 311 are symmetrically arranged with the center of the hole center of the avoidance through hole 31 as the center, two crimping pins 122 are provided, and the crimping pins 122 are buckled above the shielding portions 311 in a one-to-one correspondence. Therefore, the two pressing pins 122 are simultaneously pressed above the two corresponding shielding portions 311, so that a double-sided pressing installation effect can be formed, the pressing reliability and uniformity of the lens 12 to the reflector plate 30 are improved, the warping of one side of the reflector plate 30 due to lack of constraint is avoided, and meanwhile, the light leakage amount is increased due to the increase of the gap 40 between the reflector plate 30 and the lens 12.

In this embodiment, the light shielding portion is specifically a straight hole wall structure, which is disposed perpendicular to the length extending direction of the protruding rib 21, and the length thereof is greater than the maximum width of the press-connection pin 122. In this way, the press-fit pins 122 can be reliably pressed over the shielding portions 311, and the area of the shielding portions 311 close to the main body 121 of the lens 12 can be increased, so that the gap 40 between the reflective sheet 30 and the lens 12 can be reduced to a greater extent.

In this application, in order to ensure that the press-fit pins 122 of the lens 12 reliably press-fit the reflective sheet 30 and reduce the gap 40 between the reflective sheet 30 and the lens 12, the avoiding through hole 31 is designed as a non-circular hole, and the minimum width thereof is slightly smaller than the width of the press-fit pins 122 of the lens 12 (for example, when the press-fit pins 122 are two symmetrically disposed, the width of the press-fit pins 122 of the lens 12 specifically refers to the length of a straight line between the outermost edges of the two press-fit pins 122). This presents a problem in that the crimp pin 122 of the lens 12 is difficult to pass through the relief through hole 31.

With continued reference to fig. 1 to 3, in response to the above-mentioned drawbacks and shortcomings, in some embodiments, the shielding portion 311 is formed with an opening and closing slit 312 facing away from the hole center of the avoidance hole 31, and the opening and closing slit 312 is used to make the press-connection leg 122 pass over the reflective sheet 30 and buckle to the upper portion of the shielding portion 311. That is, during assembly, after the avoidance through hole 31 and the lens 12 are aligned accurately, the press-fitting leg 122 pushes up the opening and closing slit 312 while the reflecting sheet 30 is pressed down, so that the reflection sheet 30 can be smoothly passed over and buckled above the shielding portion 311, and the mounting efficiency is improved.

Preferably, both shielding portions 311 are provided with an opening and closing slit 312. So that the two press-connection pins 122 can respectively push up the corresponding opening and closing slits 312 to be buckled and pressed above the shielding part 311.

The shape structure and arrangement of the open and close slits 312 can be flexibly selected according to actual needs, so as to meet different product styles, installation and processing requirements and the like. For example, in the present embodiment, the two open-close slits 312 are symmetrically arranged or staggered; and/or the two opening and closing slits 312 are both straight slits or arc slits; and/or one of the two open-close slits 312 is provided as a straight slit and the other is provided as an arcuate slit.

As shown in fig. 3, the open-close slit 312 has an open end 312a and a closed end 312b that are disposed opposite to each other on the basis of any of the above embodiments, a first space is formed between the closed end 312b and the hole center of the avoidance through hole 31, and a second space is formed between the outermost edge of the crimp pin 122 and the hole center of the avoidance through hole 31, where the first space is not smaller than the second space. This ensures that the length of the open seam 312 is greater than or equal to the protruding height of the crimp pin 122 so as not to interfere with the passage of the crimp pin 122 through the open seam 312.

In other embodiments, the hole wall of the avoidance hole 31 is further provided with a avoidance recess 313 concavely formed in a direction away from the hole center, and the avoidance recess 313 is in avoidance fit with the lens 12. So can ensure that reflector plate 30 can not cause the shielding to the light that lamp strip 10 sent, improve the luminous efficacy, guarantee the display effect.

In summary, the present application further provides a display device, which includes a backlight module. The backlight module comprises the backlight lamp according to any embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Claims (10)

1. A backlight for mounting on a back plate, the backlight comprising:

the lamp strip comprises a lens, wherein the lens is provided with a main body and press-connection pins which are convexly arranged on the main body; and

the reflector plate, the reflector plate range upon range of set up in on the lamp strip, just the reflector plate is equipped with dodges the through-hole, dodge the pore wall of through-hole and be equipped with towards the hole heart orientation extension shelter from the portion, shelter from the portion press close to the main part sets up, the lens is followed dodge the through-hole exposes, just the crimping foot withhold in shelter from the top of portion, in order to realize the lens will the reflector plate buckle is fixed in the backplate.

2. The backlight of claim 1, wherein two shielding portions are symmetrically arranged with a center of a hole of the avoidance hole as a center, two crimping pins are arranged, and the crimping pins are buckled above the shielding portions in a one-to-one correspondence.

3. The backlight of claim 2, wherein the shielding portion is provided with an opening and closing slit in a direction away from a hole center of the avoidance hole, and the opening and closing slit is used for allowing the press-contact pin to pass over the reflecting sheet and to be buckled above the shielding portion.

4. A backlight as claimed in claim 3, wherein the opening and closing slit is opened in both of the shielding portions.

5. The backlight of claim 4, wherein two of the open-close slits are symmetrically arranged or offset; and/or

The two open and close seams are both straight seams or arc seams; and/or

One of the two open and close slits is provided as a straight slit and the other is provided as an arc slit.

6. A backlight as claimed in claim 3 wherein the open-close slit has an open end and a closed end which are disposed opposite to each other, a first space is formed between the closed end and the hole center of the avoidance hole, a second space is formed between the outermost edge of the press-fit pin and the hole center of the avoidance hole, and the first space is not smaller than the second space.

7. The backlight of claim 1, wherein the wall of the relief through hole is further provided with a relief recess concavely formed in a direction away from the hole center, and the relief recess is in relief fit with the lens.

8. The backlight of claim 1, wherein the light bar further comprises a PCB and a light emitter, the light emitter is disposed on the PCB, and the lens is disposed on the PCB and covers the light emitter.

9. A backlight module comprising a backlight as claimed in any one of claims 1 to 8.

10. A display device comprising a backlight module as claimed in claim 9.

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