CN217639878U - Light bar, backlight module and display device - Google Patents

Abstract

The utility model belongs to the technical field of liquid crystal display, a lamp strip, backlight unit and display device are disclosed. The lamp strip comprises a substrate, a plurality of light sources and blocking pieces, wherein the light sources and the blocking pieces are arranged in the direction of the substrate, the blocking pieces are arranged on the substrate, and the blocking pieces are distributed among gaps of the light sources. The backlight module comprises a back plate and a light guide plate, wherein the back plate comprises a first side plate, a back plate bottom plate and a second side plate, the light guide plate is arranged on the back plate bottom plate, the backlight module further comprises a light bar, the light bar is arranged between the back plate bottom plate and the light guide plate, the light guide plate is abutted against a blocking piece, and the light guide plate is abutted against a second side plate. This display device includes backlight unit, and when the light guide plate expend with heat and contract with cold, it can make the light guide plate act on and block on, can not produce the extrusion to the light source, prevents that the light source from damaging, blocks simultaneously and also can provide spaciousness for the heat dissipation, carries out quick heat dissipation, and adopts this structure in narrow limit backlight unit, can make the light-emitting side of light guide plate hug closely with the backplate, prevents the situation of light leak.

Description

Light bar, backlight module and display device

Technical Field

The utility model relates to a liquid crystal display technology field especially relates to a lamp strip, backlight unit and display device.

Background

With the continuous development of technology, the volume of the Display is becoming lighter and thinner, and Liquid Crystal Displays (LCDs) are widely used in electronic products such as personal computers, mobile phones, televisions, monitors, etc. due to their small size, thin thickness, light weight and low power consumption.

The liquid crystal display device comprises a backlight module and a display panel, wherein the backlight module provides a light source for the display panel and is an indispensable part of the liquid crystal display device. At present, the people favor more to the liquid crystal display of narrow frame gradually, and the liquid crystal display device of narrow frame can appear the light source generally and do not produce the phenomenon of light leak through the light guide plate in the light-emitting side, considers expend with heat and contract with cold simultaneously, and the setting of narrow frame also can make the light guide plate expand under the effect of high temperature to extrude the light source of income light side very likely, cause the light source to damage.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lamp strip, backlight unit and display device improve the protecting effect of light source in the lamp strip, prevent the light leak problem of backlight unit and display device's light-emitting side simultaneously.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a lamp strip, includes the base plate, and follows a plurality of light sources that the interval set up in the base plate length direction, this lamp strip still includes:

a blocking member disposed on the substrate,

the blocking pieces are distributed among the gaps of the light source, and the height of the top surface of each blocking piece is higher than that of the top surface of the light source.

Preferably, the substrate includes a substrate body and a fixing plate disposed on the substrate body, the light sources are distributed on the substrate body, and the blocking member is disposed on the fixing plate.

Preferably, the fixing plate is disposed perpendicular to the substrate body, and a height between a top surface of the blocking member and the substrate body is higher than a height between a top surface of the light source and the substrate body.

Preferably, the barrier is disposed in parallel with the substrate body.

Preferably, the blocking member is provided with a protection member.

Preferably, the protector has elasticity.

Preferably, the protection member is a protection layer, and the protection layer is disposed on a side of the barrier member facing away from the substrate body.

Preferably, the protection member is a protection cover, and the protection member is sleeved on the blocking member.

The backlight module comprises a back plate and a light guide plate, wherein the back plate comprises a first side plate, a back plate bottom plate and a second side plate, the light guide plate is arranged on the back plate bottom plate and comprises a lamp strip, the lamp strip is arranged between the first side plate and the light guide plate, one end of the light guide plate abuts against a blocking piece, and the other end of the light guide plate abuts against a back top plate.

A display device comprises the backlight module.

The utility model has the advantages that: the utility model discloses when the expend with heat and contract with cold of light guide plate, adopt to block and to make the light guide plate act on and block the piece, can not produce the extrusion to the light source, prevent the damage of light source, the setting that blocks simultaneously also can provide certain spatiality for the heat dissipation, carries out quick heat dissipation, and adopts this structure in narrow limit backlight unit, can make the light-emitting side of light guide plate hug closely with the backplate, prevents the situation of light leak.

Drawings

Fig. 1 is a schematic perspective view of a light bar disclosed in an embodiment of the present invention;

fig. 2 is a schematic structural view of a protective layer disposed on a blocking member of a light bar disclosed in an embodiment of the present invention;

fig. 3 is a schematic structural view of a protective cover disposed on a blocking member of a light bar according to an embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of a backlight module display light bar mounting portion according to an embodiment of the present invention;

fig. 5 is a schematic view of a partial structure of a light-emitting side of a backlight module according to an embodiment of the present invention.

In the figure: 1-a substrate; 11-a substrate body; 12-a fixing plate; 2-a light source; 3-a barrier; 4-a protective element; 5-a back plate; 51-a first side panel; 52-backplane floor; 53-a second side panel; 6-light guide plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, 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. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 is a schematic view of a three-dimensional structure of a light bar disclosed in the embodiment of the present invention.

As shown in fig. 1, the embodiment of the utility model discloses a lamp strip, including base plate 1 and along 1 length direction of base plate a plurality of light sources 2 that the interval set up.

In order to avoid squeezing the light source 2 and prevent the light source 2 from being damaged, the light bar further comprises a blocking member 3, the blocking member 3 is arranged on the substrate 1, the blocking member 3 is distributed between gaps of the light source 2, and the height of the top surface of the blocking member 3 is higher than that of the top surface of the light source 2. The material of the substrate 1 is, for example, an aluminum substrate.

When the light guide plate expands with heat and contracts with cold, the blocking piece 3 is adopted to enable the light guide plate to act on the blocking piece 3 without directly contacting the light source 2, so that the light source 2 is not extruded, and the light source 2 is prevented from being damaged; meanwhile, the blocking piece 3 can provide certain spatial performance for heat dissipation, and rapid heat dissipation is carried out.

Preferably, the blocking members 3 are distributed between the gaps of two adjacent light sources 2, that is, the blocking members 3 are arranged at the gaps between any two adjacent light sources 2, so that on one hand, the light sources 2 can be prevented from being blocked by the blocking members 3, and meanwhile, the blocking members 3 can also disperse the pressurization degree of the light guide plate 6, the support of the light guide plate 6 can be more balanced, and the whole structure is more firm; on the other hand, the light guide plate 6 can be taken into consideration to the maximum extent when the light guide plate 6 is thermally expanded, and the occurrence of protective blind spots is prevented.

As shown in fig. 1, the substrate 1 includes a substrate body 11 and a fixing plate 12 disposed on the substrate body 11, the light sources 2 are distributed on the substrate body 11, and the blocking member 3 is disposed on the fixing plate 12. Further, fixed plate 12 perpendicular to base plate body 11 sets up, makes the two become the setting of L type, provides the mounted position for blockking piece 3 on the one hand, and the setting of L type also makes the dynamics more even straight to conduct simultaneously, promotes the firm dynamics of part, has still increased base plate 1's whole space, and then has increased near 2 heat dissipation spaces of light source, for the heat dissipation provides the condition, can provide bigger heat radiating area.

Preferably, in this embodiment, the substrate body 11, the fixing plate 12 and the blocking member 3 are integrally formed, and the integrally formed components can be better integrated into a whole, so that the substrate body, the fixing plate 12 and the blocking member 3 are firmer, and meanwhile, the processing and the forming can be facilitated, and the cost can be saved.

The height of the top surface of the blocking member 3 from the substrate body 11 is higher than the height of the top surface of the light source 2 from the substrate body 11, so that the blocking member 3 which can first contact the fixing plate 12 when the light guide plate 6 is deformed and pressed is disposed to isolate the light source 2 and protect it.

In addition, the blocking member 3 is parallel to the substrate body 11, specifically, the plane of the top surface of the blocking member 3 is parallel to the plane of the substrate body 11, so that the plane of the blocking member 3 contacts the light guide plate 6, the overall contact is more smooth and stable, and the light source 2 and the blocking member 3 are also on the parallel plane and arranged at intervals, thereby preventing the blocking member 3 from blocking the light source 2.

Particularly, the blocking member 3 is provided with the protection member 4, and the protection member 4 has elasticity, so that on one hand, the light guide plate 6 can be buffered when being supported in a normal installation and use process, and meanwhile, the direct hard contact between the blocking member 3 and the light guide plate 6 can be more effectively prevented when the light guide plate 6 is subjected to thermal expansion deformation, and the damage to the light guide plate 6 is reduced.

Fig. 2 is a schematic structural view of a protective layer disposed on a blocking member of a light bar disclosed in an embodiment of the present invention.

As a preferable mode, as shown in fig. 2, the protection member 4 is a protection layer, and the protection layer is disposed on a side of the barrier member 3 away from the substrate body 11, that is, on a side close to the light guide plate. It should be noted that the protective layer can be detachably attached, so that the protective layer can be conveniently replaced during later-stage aging maintenance.

Fig. 3 is a schematic structural view of a protective cover disposed on a blocking member of a light bar disclosed in an embodiment of the present invention.

As another preferable mode, as shown in fig. 3, the protection member 4 is a protection cover, and the protection member 4 is fitted over the blocking member 3.

The protector 4 may be made of a conventional material such as rubber having elasticity, and the specific compression amount is selected according to the expansion requirement of the light guide plate 6.

Fig. 4 is a schematic view of a partial structure of a backlight module display light bar mounting portion according to an embodiment of the present invention; fig. 5 is a schematic view of a partial structure of a light-emitting side of a backlight module according to an embodiment of the present invention.

As shown in fig. 4 and fig. 5, the present embodiment further provides a backlight module, which includes a back plate 5 and a light guide plate 6, wherein the back plate 5 includes a first side plate 51, a back plate bottom plate 52 and a second side plate 53, the light guide plate 6 is disposed on the back plate bottom plate 52, the light bar 1 is disposed between the first side plate 51 and the light guide plate 6, one end of the light guide plate 6 abuts against the blocking member 3, and the other end of the light guide plate 6 abuts against the second side plate 53.

In the embodiment, the light bar 1 is arranged between the first side plate 51 and the light guide plate 6, the light guide plate 6 is abutted against the second side plate 53, the whole body can be stably installed, shaking is prevented, and meanwhile, the light guide plate 6 is abutted against the second side plate 53, so that the light leakage condition of the light emitting side can be effectively reduced; when thermally expanded, the light guide plate 6 may compress the protection member 4, which does not affect the thermal expansion of the light guide plate 6, and simultaneously prevents the light guide plate 6 from damaging the light source 2, and ensures that the light guide plate 6 itself is not damaged.

The embodiment also provides a display device, including backlight unit as above, on the one hand reduces the damage to light source 2 when being heated and expanded, improves display device's radiating efficiency simultaneously, can also reduce the light leak situation emergence of light-emitting side in addition.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A lamp strip, includes base plate (1), and along a plurality of light sources (2) that the interval set up in base plate (1) length direction, its characterized in that, this lamp strip still includes:

the blocking piece (3) is arranged on the substrate (1), the blocking piece (3) is distributed among gaps of the light source (2), and the height of the top surface of the blocking piece (3) is higher than that of the top surface of the light source (2).

2. A light bar according to claim 1, wherein the substrate (1) comprises a substrate body (11) and a fixing plate (12) disposed on the substrate body (11), the light sources (2) are distributed on the substrate body (11), and the blocking member (3) is disposed on the fixing plate (12).

3. A light bar according to claim 2, characterized in that the fixing plate (12) is arranged perpendicular to the base plate body (11), and the height of the top surface of the blocking member (3) from the base plate body (11) is higher than the height of the top surface of the light source (2) from the base plate body (11).

4. A light bar according to claim 3, characterized in that the barrier member (3) is arranged in parallel with the substrate body (11).

5. A light bar as defined in claim 2, wherein the barrier member (3) is provided with a protective member (4).

6. A light bar as claimed in claim 5, characterized in that the protective element (4) is elastic.

7. A light bar according to claim 5, characterized in that the protective element (4) is a protective layer arranged on the side of the barrier element (3) facing away from the substrate body (11).

8. A light bar as claimed in claim 5, wherein the protective member (4) is a protective cover, and the protective member (4) is fitted over the blocking member (3).

9. A backlight module comprising a back plate (5) and a light guide plate (6), wherein the back plate (5) comprises a first side plate (51), a back plate bottom plate (52) and a second side plate (53), and the light guide plate (6) is disposed on the back plate bottom plate (52), and the backlight module further comprises the light bar according to any one of claims 1 to 8, the light bar is disposed between the first side plate (51) and the light guide plate (6), one end of the light guide plate (6) abuts against the blocking member (3), and the other end of the light guide plate (6) abuts against the second side plate (53).

10. A display device comprising the backlight module according to claim 9.

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