CN201348189Y

CN201348189Y - Lampshade of liquid crystal display

Info

Publication number: CN201348189Y
Application number: CNU2008201839038U
Authority: CN
Inventors: 杨荣山; 张家瑶
Original assignee: WEIGUAN ELECTRONICS CO Ltd
Current assignee: WEIGUAN ELECTRONICS CO Ltd
Priority date: 2008-12-18
Filing date: 2008-12-18
Publication date: 2009-11-18
Anticipated expiration: 2018-12-18

Abstract

The utility model provides a lampshade of a liquid crystal display, which is characterized in that the lampshade comprises a long edge, a short edge and a bending part, wherein the bending part is connected with the long edge and the short edge, and can be used for placing luminous elements; the lampshade can be designed into an unsymmetrical U-shaped structure; and the lampshade intensity can be enhanced. Because the lampshade has the long edge, the heat radiation area can be enlarged, the heat radiation effect can be improved, simultaneously, the contact area of an optical sheet which is in abutment with the lampshade is enlarged, the supporting area of the optical sheet is further enlarged, deformation caused by temperature, stress and the like does not occur, the dimension of the optical sheet in the thickness direction can be reduced, the dimension of the whole liquid crystal display in the thickness direction is reduced, and the weight of the whole product is lightened to reach the requirements of thin appearance and light weight of the liquid crystal display. In addition, the long edge can cover a driving circuit board, and has the effect of electromagnetic interference protection.

Description

A kind of lampshade of liquid crystal indicator

Technical field

The utility model relates to the electronic product field, particularly a kind of lampshade of liquid crystal indicator.

Background technology

In recent years, liquid crystal indicator is used more and more extensivelyr, as display devices such as LCD, LCD TV, PC all-in-ones, no matter be to be applied to any product, no matter be to be applied to which field also, pursuing the volume lightweight, save the processing cost and the energy, all is the target that present modern product is pursued.Existing liquid crystal indicator mainly is made up of face frame, liquid crystal display, mainboard module, metallic support and back cover, and wherein, described liquid crystal display mainly is made up of preceding frame, liquid-crystalline glasses module, center, optical sheet, light source, lampshade and backboard.Yet, the liquid crystal indicator of said structure manufacturing is assembled after normally processing and being assembled into corresponding composite module again, thereby need increase center and backboard optional feature in addition, make that the thickness of entire liquid crystal display device is thicker usually, cost is higher, technology is more complicated also, is difficult to satisfy the lightening day by day development trend that gets of present LCD.In the above-mentioned prior art structure, lampshade generally is designed to bending, and cover body two lengths of straight flange equate that only the installation component as light source uses, and effect and effect are very single.

The utility model content

Technical problem to be solved in the utility model is, overcome the defective of above-mentioned prior art, a kind of lampshade of liquid crystal indicator is provided, the lampshade effect and the single problem of effect of prior art both can have been solved, can reduce simultaneously the size of liquid crystal indicator thickness direction again, further reach the lightening requirement of LCD.

The utility model is achieved in that a kind of lampshade of liquid crystal indicator, and it has a long limit, minor face and links to each other, can put the bend of light-emitting component with minor face with described long limit.

Preferably, the utility model can be formed by tabular component bending.

Further, the length edge lengths of described lampshade should cover the last drive circuit board of glasses for LCD group product of being located at liquid crystal indicator at least.

Further, a reflective surface is contained on the length limit of described lampshade.

Further, also can be provided with the spacer of the glasses for LCD group product that are used to locate liquid crystal indicator on the length limit of described lampshade.

Be different from prior art, the utility model is designed to asymmetric U type structure, can increase the intensity of lampshade itself, owing to have a long limit, can increase area of dissipation, obviously improve radiating effect, simultaneously, can make that also the optical sheet contact area of adjacency increases with it, and then increase the Area of bearing of each optical sheet, it is former thereby cause distortion to be difficult for Yin Wendu and stress etc., therefore, can reduce the size of optical sheet thickness direction, thereby reduce the size of entire liquid crystal display device thickness direction, can further alleviate integral product weight, to reach the lightening requirement of LCD.In addition, anti-electromagnetic interference effect can be played owing to can cover drive circuit board in the length limit of the utility model.

Description of drawings

Fig. 1 is the utility model structure section figure;

Fig. 2 forms each element structure exploded view of liquid crystal panel for the utility model.

Fig. 3 is the utility model and other each member fit structure schematic diagrames;

Fig. 4 is the utility model and other each member fit structure sectional drawings.

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

The utility model embodiment provides a kind of lampshade of liquid crystal indicator, referring to Fig. 1, it is to be formed by tabular component bending, can adopt metal material, also can select nonmetallic materials for use, it has a long limit 102, a minor face 101, there is a bend that is attached thereto 103 termination at described long limit 102, minor face 101, makes it to form one asymmetric " U " type structure, can one-body moldedly be fabricated to overall structure, described bend contains a concave shaped cavity 105, can put light-emitting component 2.

Referring to Fig. 4, in liquid crystal indicator, be used to realize that the Presentation Function liquid crystal panel can be glasses for LCD group product and some optical sheets, above-mentioned member constitutes liquid crystal panel by the superimposed in regular turn arrangement of designing requirement, then by a clamping member 13 corresponding fixed or movable being snapped on the back cover.This each part that disperses that will form liquid crystal panel is corresponding superimposed, the structure of unifying clamping again by the clamping member, be different from and be combined into module in the prior art earlier, the constituted mode of set assembling both can reduce manufacturing procedure again, also can reduce the additional member of being derived by the prior art structure simultaneously, as center, backboard etc., so reduced processing cost, material cost and assembly cost, can reduce the weight of product again, further can reach the whole lightening purpose of liquid crystal indicator.

Again referring to Fig. 2-Fig. 4, in the said structure design, described glasses for LCD group product comprise glasses for LCD 3 (open cell) and drive circuit board 14, and the optical sheet adjacent with described glasses for LCD 3 is first optical sheet.Particularly, described optical sheet comprises diffusion sheet 5, brightening piece 6, following diffusion sheet 7, LGP 9 and reflector 10, described first optical sheet is last diffusion sheet 5, described upper and

lower diffusion sheet

5,7 be mainly used in divergent beams, can provide uniform surface light source to LCDs; The main effect of brightening piece 6 is to revise direction of light, increases the utilization benefit of light, two superimposed compositions of diaphragm of general normal employing, and direction is vertical each other, and light is concentrated to improve whole briliancy; The effect of LGP 9 is guiding radiation directions, improves liquid crystal display radiance degree and control brightness even; The effect of reflector 10 is that the light that will not enter LGP 9 reflects, and it is transferred on the liquid crystal display by LGP 9 again, prevents that light source from leaking outside, to increase the service efficiency of light source.Between described glasses for LCD 3 and last diffusion sheet 5 or LGP 9, also be folded with cushion 4 (Rubber Pad), cushion 4 can not only make and keep a gap between glasses for LCD 3 and the optical sheet, and can also be under the pressure effect of clamping member 13, rely on the frictional force between cushion 4 and the glasses for LCD 3, effectively prevent the slip of glasses for LCD 3, thereby use simple assembly to replace center of the prior art, not only reduce production cost, also simplified the structure of liquid crystal indicator greatly.Annular or frame-shaped structure that described cushion 4 can be formed in one and form fit in around the incidence surface of glasses for LCD 3; Also can be at least one shape member, as two strip members that be arranged in parallel, fit in the incidence surface both sides of glasses for LCD 3.Between diffusion sheet 5 and the brightening piece 6, also be provided with distance piece 8 on described.Described distance piece 8 can be at least one bar shaped member, fits in the described diffusion sheet 5 incidence surface both sides of going up, and also can be a framing component, fits in around diffusion sheet 5 incidence surfaces.Described brightening piece 6 is superimposed with the one side of LGP 9 by back, distance piece 8 location with following diffusion sheet 7, and the another side of LGP 9 and reflector 10 are superimposed, and described reflector 10 and LGP 9 superimposed faces are a shiny surface, are used for reflection ray to LGP 9.

Described light-emitting component 2 places and is strip, can be any luminescence component, such as being cold-cathode fluorescence lamp or the strip LED lamp that formed by some LED.Described light-emitting component 2 two ends are fixed on the utility model by fixture 11 respectively, and position between being arranged among the concave shaped cavity 105 respectively; Described reflector 10, LGP 9 are fitted back mutually and are positioned at light-emitting component 2 belows or top, the incidence surface setting of light-emitting component 2 relative LGPs 9.Described reflector 10, LGP 9 end faces place the length limit 102 and minor face 101 inboards of the utility model respectively, and fit tightly with it, are fixed by the utility model clamping.

As Fig. 1-shown in Figure 4, the length on the length limit 102 of the utility model should be blocked drive circuit board 14 at least, thereby plays anti-electromagnetic interference effect.Simultaneously, thickness of the present utility model should can be suitably thicker with respect to the lampshade that prior art is used, thereby increase intensity of the present utility model.In addition, because the length on long limit 102 increases, therefore, the also corresponding increase of area of dissipation, radiating effect is had clear improvement, simultaneously, reflector 10 and the utility model contact area are increased, thereby make the Area of bearing of reflector 10, LGP 9 etc. increase, it is former thereby cause distortion to make reflector 10 and LGP 9 be difficult for Yin Wendu and stress etc., therefore, can use thin reflector 10 and LGP 9, thereby can further alleviate integral product weight, reduce the size of entire liquid crystal display device thickness direction.

On the lateral surface of minor face of the present utility model, also be provided with the spacer 104 of two evaginations, described spacer 104 is used to locate glasses for LCD 3.On long limit 102, also be provided with the lug plate of some screwed holes and an evagination, described screwed hole can be used for fixed drive circuit board 14, and lead one end is connected on the described lug plate, the other end is connected on the metal shell of mainboard assembly, thereby with the utility model ground connection.

Because the light part of light-emitting component 2 emissions is directly into being incident upon in the optical sheet, therefore another part then penetrates towards the lampshade direction, via entering in the optical sheet, again after the reflection of lampshade, the reflecting effect of lampshade is injected light ray energy in the optical sheet with influence, and then influences the brightness of liquid crystal panel.Therefore, in order effectively to improve the reflectivity of lampshade, the utility model can be on its long limit 102 inner surfaces, add a reflective surface to improve the brightness of liquid crystal panel, reduce energy loss, also lampshade and LGP can be united two into one, can realize the utility model function equally, and can further reduce the size of liquid crystal indicator thickness direction.

The utility model can be the building block of LCD, LCD TV or computer.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1, a kind of lampshade of liquid crystal indicator is characterized in that: have a long limit, minor face and link to each other, can put the bend of light-emitting component with minor face with described long limit.

2, the lampshade of a kind of liquid crystal indicator as claimed in claim 1 is characterized in that: formed by tabular component bending.

3, the lampshade of a kind of liquid crystal indicator as claimed in claim 1 is characterized in that: the length edge lengths of described lampshade should cover the last drive circuit board of glasses for LCD group product of being located at liquid crystal indicator at least.

4, the lampshade of a kind of liquid crystal indicator as claimed in claim 1 is characterized in that: a reflective surface is contained on the length limit of described lampshade.

5, as the lampshade of each described a kind of liquid crystal indicator of claim 1-4, it is characterized in that: the spacer that also is provided with the glasses for LCD group product that are used to locate liquid crystal indicator on the length limit of described lampshade.