CN202056695U

CN202056695U - Backlight source for display device

Info

Publication number: CN202056695U
Application number: CN2011201874870U
Authority: CN
Inventors: 邓毅; 王伯长; 布占场
Original assignee: Beijing BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2011-06-03
Filing date: 2011-06-03
Publication date: 2011-11-30
Anticipated expiration: 2021-06-03

Abstract

The utility model discloses a backlight source for a display device. The backlight source comprises at least one LED (Light Emitting Diode) lamp and a PCB (Printed Circuit Board), wherein the LED lamp is provided with a first connection structure; the PCB is provided with a second connection structure corresponding to the first connection structure; and the first connection structure of the LED lamp is connected with the second connection structure of the PCB. Since the first connection structure is correspondingly matched with the second connection structure, the LED lamp with the first connection structure can be conveniently assembled or disassembled on the PCB with the second connection structure; and when the LED lamp in the backlight source is required to be replaced, the LED lamp can be conveniently replaced without replacing the entire backlight source, so that the application cost is reduced.

Description

A kind of backlight that is used for display unit

Technical field

The utility model relates to technical field of liquid crystal display, relates in particular to a kind of backlight that is used for display unit.

Background technology

The assembling mode of the backlight that uses in the liquid crystal module all adopts welding procedure to connect at present.As shown in Figure 1, a plurality of light emitting diodes (LED, Light Emitting Diode) 1 is welded on the printed circuit board (PCB) (PCB, Printed Circuit Board) 3 by scolding tin 2.In the use of backlight, unusual or when damaging when the brightness of a certain LED lamp on the backlight, need to change the optical characteristics that the entire backlight source could guarantee module, increased use cost.

The utility model content

The utility model embodiment provides a kind of backlight that is used for display unit, can not change the problem of single led lamp easily in order to solve conventional lighting sources.

The backlight that is used for display unit that the utility model embodiment provides, comprise: light emitting diode and circuit board, described light emitting diode has first syndeton, described circuit board has second syndeton corresponding with first syndeton, and first syndeton of light emitting diode is fixedlyed connected with second syndeton of circuit board.

The beneficial effect of the utility model embodiment comprises:

The backlight that is used for display unit that the utility model embodiment provides, the LED light fixture has first syndeton, PCB has second syndeton corresponding with first syndeton, first syndeton of LED lamp is connected with second syndeton of PCB, because the cooperation between second syndeton of first syndeton and correspondence, feasible LED lamp installation or removal on PCB easily with second syndeton with first syndeton, when the LED lamp need be changed in the backlight, can change the LED lamp does not easily need to change the entire backlight source, has reduced use cost.

Description of drawings

Fig. 1 is for being used for the side view of the backlight of display unit in the prior art;

Fig. 2 a has a schematic cross-section that cross sectional shape is the LED lamp of T font tongue for what the utility model embodiment provided;

Fig. 2 b has a schematic cross-section that cross sectional shape is the LED lamp of trapezoidal tongue for what the utility model embodiment provided;

Fig. 2 c has a schematic cross-section that cross sectional shape is the LED lamp of rectangle tongue for what the utility model embodiment provided;

Fig. 2 d is the round schematic cross-section that lacks the LED lamp of shape tongue for the cross sectional shape that has that the utility model embodiment provides;

The perspective view of the LED lamp that Fig. 3 a provides for the utility model embodiment with T font tongue;

The perspective view of the PCB that Fig. 3 b provides for the utility model embodiment with T font groove;

The sectional view that the LED lamp of Fig. 3 a that Fig. 3 c provides for the utility model embodiment and the PCB of Fig. 3 b are connected by the slot mode.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the backlight that the utility model embodiment is provided is described in detail.

The backlight that is used for display unit that the utility model embodiment provides, specifically comprise: LED lamp and printing board PCB, and, the LED light fixture has first syndeton, PCB has second syndeton corresponding with first syndeton, and first syndeton of LED lamp is connected with second syndeton of PCB.

Particularly, the connected mode of first syndeton and second syndeton can be slot, engaging, engage thread or other connected modes that is easy for installation and removal.

First syndeton of LED lamp and second syndeton of PCB adopt above-mentioned these modes to be connected; make that the LED lamp can installation or removal on PCB easily; in the use of backlight; if the brightness of certain or some LED lamps is unusual or when damaging; do not need to change the entire backlight source; only need disassemble the LED lamp that needs replacing, change other normal LED lamps and get final product, reduce use cost.

Various connected modes to second syndeton of first syndeton of LED lamp and PCB are specifically described respectively below:

Embodiment one: first syndeton of LED lamp is connected with the mode of second syndeton of PCB by slot;

First syndeton of LED lamp can be tongue, and correspondingly, second syndeton of PCB is and this tongue corresponding groove; Perhaps first syndeton of LED lamp is a groove, and correspondingly, second syndeton of PCB is the tongue corresponding with this groove.

Particularly, the cross sectional shape of groove and tongue can lack shape or other shapes commonly used for T font, trapezoidal, rectangle, circle.

First syndeton with the LED lamp is that tongue is that illustration shows explanation below, shown in Fig. 2 a-d, first syndeton of LED lamp 4 goes out with empty collimation mark, wherein, the cross sectional shape of tongue can lack shape D (shown in Fig. 2 d) for T font A (shown in Fig. 2 a), trapezoidal B (shown in Fig. 2 b), rectangle C (shown in Fig. 2 c), circle.

LED lamp 4 shown in Fig. 3 a has the tongue 401 that cross sectional shape is the T font; PCB 5 shown in Fig. 3 b has the groove 501 that cross sectional shape is the T font.Wherein, groove 501 at least one ends of PCB 3 do not seal (going out with empty collimation mark) in Fig. 3 b, the tongue 401 of Dui Ying LED lamp 4 can insert by the end that PCB 5 grooves 501 do not seal in these PCB 5 grooves 501 with it, makes LED lamp 4 to be installed in easily on the PCB 5.Shown in Fig. 3 c is after LED lamp 4 is assemblied on the PCB 5, the sectional view of the light source of being formed.Otherwise the end that the LED lamp 4 with tongue 401 does not seal in also can the groove 501 by PCB 5 is extracted, and makes LED lamp 4 to disassemble from PCB 5 easily, like this, when the LED lamp on the backlight need be changed, directly dismantle this LED lamp, replace with new LED lamp and get final product.

Preferably, adopt interference fit between first syndeton of LED lamp and second syndeton of PCB, the LED lamp just can not come off when moving or shake like this.

First syndeton of LED lamp also can be groove, and second syndeton of PCB is the tongue corresponding with this groove, and the situation of tongue and groove is similar in both concrete shapes and structure and the above-mentioned example, does not repeat them here.

Embodiment two: first syndeton of LED lamp is connected with the mode of second syndeton of PCB by engaging;

Same, first syndeton of LED lamp can be protrusion, correspondingly, second syndeton of PCB is the hole corresponding with this protrusion; Perhaps first syndeton of LED lamp is a hole, and correspondingly, second syndeton of PCB is the protrusion corresponding with this hole.

Particularly, the size of protrusion and hole is according to the corresponding adjustment of size of LED lamp; In addition, the cross sectional shape of protrusion and hole can not done qualification in the present embodiment for the T font in the foregoing description one, trapezoidal, rectangle, circle lack shape or other shapes commonly used yet.

When backlight assembled, the protrusion of LED lamp or PCB directly snaps in just can finish the backlight assembling in the corresponding hole, during dismounting, as long as the protrusion of LED lamp or PCB is directly extracted from the hole of correspondence.

Embodiment three: first syndeton of LED lamp is connected by engage thread with second syndeton of PCB;

First syndeton of LED lamp can be for having externally threaded protrusion, and correspondingly, second syndeton of PCB is the hole with internal thread; Perhaps first syndeton of LED lamp is the hole with internal thread, and correspondingly, second syndeton of PCB is the externally threaded protrusion of tool.

Particularly, having externally threaded protrusion can be according to the size adjusting of used LED lamp with the size with hole of internal thread.When the backlight installation or removal,, be convenient to installation and removal as long as the externally threaded protrusion of having of LED lamp or PCB is screwed into or the corresponding hole with internal thread of back-outing.

The utility model embodiment also provides a kind of module backlight, and this module backlight comprises the above-mentioned backlight that the utility model embodiment provides.

The backlight that the utility model embodiment provides, the LED light fixture has first syndeton, PCB has second syndeton corresponding with first syndeton, first syndeton of LED lamp is connected with second syndeton of PCB, because the cooperation between second syndeton of first syndeton and correspondence, feasible LED lamp installation or removal on PCB easily with second syndeton with first syndeton, when a certain LED lamp need be changed, can change this LED lamp does not easily need to change the entire backlight source, has reduced use cost.

Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.

Claims

1. light source that is used for backlight of display device, comprise: light emitting diode and circuit board, it is characterized in that, described light emitting diode has first syndeton, described circuit board has second syndeton corresponding with first syndeton, and first syndeton of light emitting diode is fixedlyed connected with second syndeton of circuit board.

2. light source as claimed in claim 1 is characterized in that, described first syndeton is connected with the mode of described second syndeton with slot.

3. light source as claimed in claim 2 is characterized in that, described first syndeton is a tongue, and described second syndeton is and this tongue corresponding groove; Or

Described first syndeton is a groove, and described second syndeton is the tongue corresponding with this groove;

At least one end of described groove does not seal, and described tongue inserts in the described groove by the end that described groove does not seal.

4. light source as claimed in claim 3 is characterized in that, the cross sectional shape of described groove and described tongue is that T font, trapezoidal, rectangle or circle lack shape.

5. as each described light source of claim 2-4, it is characterized in that, adopt interference fit between first syndeton and second syndeton.

6. light source as claimed in claim 1 is characterized in that, described first syndeton is connected with the mode of second syndeton with engaging.

7. light source as claimed in claim 6 is characterized in that, described first syndeton is a protrusion, and described second syndeton is the hole corresponding with this protrusion; Or

Described first syndeton is a hole, and described second syndeton is the protrusion corresponding with this hole;

Described protrusion snaps in the described hole.

8. light source as claimed in claim 1 is characterized in that, first syndeton is connected threadably with second syndeton.

9. light source as claimed in claim 8 is characterized in that, described first syndeton is for having externally threaded protrusion, and described second syndeton is the hole with internal thread; Or

Described first syndeton is the hole with internal thread, and described second syndeton is the externally threaded protrusion of tool.