CN202327879U

CN202327879U - Backlight module, backboard and liquid crystal display device

Info

Publication number: CN202327879U
Application number: CN2011204620715U
Authority: CN
Inventors: 萧宇均; 郭仪正; 黄冲; 程加河
Original assignee: Shenzhen China Star Optoelectronics Technology Co Ltd
Current assignee: TCL China Star Optoelectronics Technology Co Ltd
Priority date: 2011-11-18
Filing date: 2011-11-18
Publication date: 2012-07-11
Anticipated expiration: 2021-11-18

Abstract

The utility model discloses a backlight module, a backboard and a liquid crystal display device. The backlight module comprises the backboard, a printed circuit board (PCB) and a locking accessory for fixing the PCB to the back board, wherein a sliding chute is formed on the board surface of the backboard; and the locking accessory is arranged on the sliding chute through a fixing structure at the bottom of the locking accessory. The sliding chute for mounting a convex hull is formed on the board surface of the backboard, and the convex hull can be fixed at any position on a perforative chute, so that the convex hull is arranged at the corresponding position on the sliding chute according to the size of the PCB, and the backboard can adapt to PCBs with different size; therefore, the universality of the backboard is improved; and furthermore, a corresponding number of convex hulls are arranged according to requirements of different components on numbers, so that the backboard has relatively high universality, and the production cost and the processing cost of the backboard are reduced.

Description

A kind of module backlight, backboard and liquid crystal indicator

Technical field

The utility model relates to field of liquid crystal display, in particular, relates to a kind of module backlight, backboard and liquid crystal indicator.

Background technology

Module backlight is the light source generator in the liquid crystal indicator, and it comprises: assemblies such as backboard, LGP, blooming piece, LED lamp bar; Wherein, most of assemblies all lock and are fixed on the backboard, lock on backboard through convex closure like PCB.

Convex closure is to be arranged at the structure that is used for fixing assemblies such as pcb board on the backboard, and convex closure generally protrudes from backboard plate face, and pcb board locks part through screw or other and is fixed on the convex closure, and then avoids PCB directly to contact with backboard plate face and cause short circuit.Existing backboard as shown in Figure 1, the convex closure 800 on this backboard integrated punching when backboard is made takes shape on the backboard, and the position of the convex closure on the backboard 800 is fixed like this, is difficult to adapt to the pcb board of different size; While is for the PCB of different size, and the module backlight of different component count demands, needs die sinking again to make corresponding backboard; Pcb board to different size; Need die sinking to make new backboard, so its versatility is bad, and production cost in this case can be higher.

Summary of the invention

The utility model technical problem to be solved provides a kind of versatility good module backlight, backboard and liquid crystal indicator.

The purpose of the utility model realizes through following technical scheme: a kind of module backlight comprises backboard, pcb board and is used for pcb board is fixed to the part that locks on the backboard; Said backboard plate face is provided with chute, and the said fixed structure of part bottom it that lock is installed on the said chute.

Preferably, said chute is provided with the part that locks that is used for fixing PCB, and the said part that locks can be arranged on the relevant position on the chute according to the size of PCB.Through to the PCB determining dimensions, be arranged on the relevant position on the chute with locking part, thereby can use a kind of PCB of backboard installation different size of specification.

Preferably, the said part that locks is a convex closure, and the bottom of said convex closure is provided with the fixed structure that itself is installed on the said chute.Convex closure has the effect that locks PCB preferably, and it can avoid the short circuit of PCB.

Preferably, said fixed structure is the screwed hole that the convex closure bottom is provided with.Convex closure can be installed on the backboard through screw, and is easy for installation, and detachable.

Preferably, said screwed hole runs through convex closure.Can only just can realize interfixing of PCB, convex closure and three assemblies of backboard with a screw like this, screw passes PCB, convex closure and backboard, and through nut check, three assemblies is fixed.

Preferably, said fixed structure is the rivet that is wholely set in the convex closure bottom.Riveted way is fairly simple, can use machinery to accomplish simultaneously, and convenient and swift, reliability is high.

Preferably, the said part that locks is independent mushroom head.A mode that locks PCB of pestering is comparatively convenient and swift.

Preferably, the said part that locks is installed on the backboard through screw, and the said part that locks can move on chute.Before the installation of carrying out PCB, can be installed on the backboard locking part in advance, but not lock; Make that locking part can move on chute, like this, when the PCB to various sizes locks; Move to the position of corresponding size with locking part; Lock behind the PCB will locking part and be locked on the backboard, thereby do not need to measure in advance the position, make that the process of installing is more quick.

Preferably, the said part that locks is installed on the backboard and locking through screw or rivet, and the said part that locks is fixed on the said chute.This mode installation accuracy is high.

A kind of backboard, said backboard plate face is provided with and is used to install the chute that locks part.

A kind of liquid crystal indicator, it has comprised as above arbitrary described module backlight.

The utility model is because the plate face of backboard is provided with chute in order to convex closure to be installed; Convex closure can be fixed the optional position on groove, thereby can convex closure be arranged on the relevant position on the chute according to the PCB size; So that backboard can be adapted to have different pcb board sizes, improve its versatility; In addition, can also the convex closure of respective numbers be set according to the needs of different component count, thereby make backboard have higher versatility, reduce the production cost and the processing cost of backboard.

Description of drawings

Fig. 1 is the structure diagram of existing backboard,

Fig. 2 is the back board structure sketch of the utility model embodiment,

Fig. 3 is the structure diagram of a kind of convex closure among the utility model embodiment,

Fig. 4 is the structural representation that the convex closure among the utility model embodiment locks PCB,

Fig. 5 is the structure diagram of the another kind of convex closure of the utility model embodiment,

Fig. 6 is the structural representation that the another kind of convex closure among the utility model embodiment locks PCB,

Fig. 7 is the structure diagram of the third convex closure among the utility model embodiment.

Wherein: 1, backboard, 121, chute, 800, convex closure, 810, screwed hole, 811, screw, 820, rivet, 300, PCB.

The specific embodiment

The utility model provides a kind of liquid crystal indicator; Comprise liquid crystal panel and module backlight, said module backlight bottom is provided with backboard, and said backboard is processed by the plate of a plate or a plurality of plate or a plurality of different materials; On the plate face of backboard, be provided with the chute that is used for fixing convex closure.To this scheme, the utility model further specifies through following preferred embodiment:

Be illustrated in figure 2 as a backboard that processes by a monoblock plate; Its plate face is provided with chute 121; The length of chute 121 and position and quantity according to the PCB of various sizes and corresponding setting on backboard plate face, chute 121 is provided with convex closure 800, convex closure 800 is to be installed in addition on the chute 121 as the part of individualism; Can carry out the adjustment of position according to the size needs of PCB; Its adjusting range is in chute 121, and like this, this backboard of type can be common to multiple module backlight.

For the convenience of installing, can be in advance with convex closure through being installed on the said chute, but, convex closure can be slided on chute not with screw lock, to the size of PCB convex closure is slided into corresponding position, again screw is locked after locking PCB.Also can directly pass through fixedly convex closure of screw or rivet, lock PCB again, to reduce operation to the size of PCB.

Certainly, except the use convex closure locks PCB on the backboard, also can use other the similar part that locks, as it is first-class to pester.The mushroom head is made into the part that monomer exists, and can be installed in chute in the same with convex closure can reach locking to different PCB sizes equally.

As Fig. 3 and shown in Figure 5 be the employed convex closure 800 that exists as individual part in the present embodiment; This type of convex closure is not formed on the backboard when backboard is produced; But when needs use convex closure; On the relevant position of the chute 121 of backboard 1, convex closure 800 is installed, locate the assemblies such as PCB of various sizes to reach the convex closure 800 of applying in a flexible way.

As shown in Figure 3, convex closure 800 have one be used to install and fix assemblies such as pcb board screwed hole 810, this screwed hole 810 connects this independent convex closure 800 always; So that independent convex closure 800 can be fixed on the backboard 1 from the below through screw 811; Simultaneously again can be up fixing pcb board, accordingly, should be provided with screwed hole 810 sizable convex closure installing holes on the backboard 1 with said convex closure 800; Be chute, so that convex closure 800 can be fixed on the backboard 1.Same; Also can only use a screw fit nut to realize fixing between PCB, convex closure and the backboard; As shown in Figure 4, because screwed hole has connected whole convex closure 800, and then can directly PCB300 be locked on the backboard 1 through a screw 811 attaching nuts 812.

Easy for installation in order to make, the similar structure of rivet can be arranged in the bottom of convex closure as shown in Figure 5, and it is one-body molded to be about to rivet and convex closure, and the end portion of convex closure 800 is the riveted joint form with being connected of backboard 1, and promptly convex closure 800 is riveted on the backboard 1 through rivet 820.Riveted way is with respect to the screw ways of connecting, and it is fast, and can accomplish through machine, improves the efficient of producing.As shown in Figure 6, convex closure 800 is fixed on the backboard 1 through rivet 820, and pcb board 300 is fixed on the convex closure through screw 811 then, accomplishes locking pcb board 300.

For economical with materials, and easy to process, convex closure can be formed by the direct punching press of plate, and is as shown in Figure 7, and convex closure 800 inside are engraved structure, and its integral body is formed by a plate material, and both economical with materials made things convenient for again and made.

Certainly, the shape of the independent convex closure 800 described in the present embodiment is not limited to the tapered cross-section shape shown in the figure, with respect to other shape such as squarely also can reach corresponding use.

In the present embodiment, according to the size of PCB in the module backlight, corresponding convex closure is set on the relevant position again; Simultaneously, according to the pcb board assembly of varying number, corresponding convex closure quantity is set.

Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.

Claims

1. module backlight comprises backboard, pcb board and is used for pcb board is fixed to the part that locks on the backboard; It is characterized in that said backboard plate face is provided with chute, the said fixed structure of part bottom it that lock is installed on the said chute.

2. a kind of module backlight as claimed in claim 1 is characterized in that said chute is provided with the part that locks that is used for fixing PCB, and the said part that locks can be arranged on the relevant position on the chute according to the size of PCB.

3. a kind of module backlight as claimed in claim 2 is characterized in that, the said part that locks is a convex closure, and the bottom of said convex closure is provided with the fixed structure that itself is installed on the said chute.

4. a kind of module backlight as claimed in claim 3 is characterized in that, said fixed structure is the screwed hole that the convex closure bottom is provided with.

5. a kind of module backlight as claimed in claim 4 is characterized in that said screwed hole runs through convex closure.

6. a kind of module backlight as claimed in claim 3 is characterized in that, said fixed structure is the rivet that is wholely set in the convex closure bottom.

7. a kind of module backlight as claimed in claim 2 is characterized in that, the said part that locks is independent mushroom head.

8. a kind of module backlight as claimed in claim 2 is characterized in that, the said part that locks is fixed on the backboard through screw, and the said part that locks can move on chute.

9. a kind of module backlight as claimed in claim 2 is characterized in that, the said part that locks is fixed on the backboard and locking through screw or rivet, and the said part that locks is fixed on the said chute.

10. a backboard is characterized in that, said backboard plate face is provided with and is used to install the chute that locks part.

11. a liquid crystal indicator is characterized in that, it has comprised arbitrary described module backlight like claim 1-9.