CN203349037U

CN203349037U - LED (Light Emitting Diode) lamp bar and backlight module using same

Info

Publication number: CN203349037U
Application number: CN2013204367010U
Authority: CN
Inventors: 郝广宁; 汪军; 袁永刚
Original assignee: Suzhou Dongshan Precision Manufacturing Co Ltd
Current assignee: Suzhou Dongshan Precision Manufacturing Co Ltd
Priority date: 2013-07-22
Filing date: 2013-07-22
Publication date: 2013-12-18
Anticipated expiration: 2023-07-22

Abstract

The utility model discloses an LED (Light Emitting Diode) lamp bar, which comprises a PCB (Printed Circuit Board), wherein a plurality of projecting parts which are uniformly distributed at equal intervals horizontally extend out of the upper and lower sides of the PCB; upper and lower rows of projecting parts are distributed symmetrically; each projecting part is provided with an LED particle. According to the LED lap bar provided by the utility model, the projecting parts of the LED lamp bar can be staggered with the projecting parts of another LED lamp bar in a complementary way, so that more PCBs can be obtained by a substrate with the same area in comparison to the prior art; moreover, the PCB of the LED lamp bar provided by the utility model has the advantages that the material consumption is relatively low, and the manufacturing cost of the LED lamp bar is reduced.

Description

A kind of LED lamp bar and adopt the backlight module of this LED lamp bar

Technical field

The utility model relates to technical field of liquid crystal display, more particularly, relates to a kind of LED lamp bar and adopts the backlight module of this LED lamp bar.

Background technology

Because liquid crystal itself is not luminous, therefore, in the products such as LCD TV, LCDs, a backlight module need to be set.Traditional backlight module is used CCFL(Cold Cathode Fluorescent Lamp, cathode fluorescent tube) as light emitting source.And LED(Light Emitting Diode, light emitting diode) light source, as a kind of novel light source, is compared with traditional CCFL, has that light efficiency is high, little power consumption, caloric value are few, long service life and the characteristics such as environment friendly and pollution-free, replace gradually in recent years CCFL, become the light source of main flow.

As shown in Figure 1, LED particle 2 is attached on pcb board 3 by the form of SMT, forms LED lamp bar 10.Be provided with circuit in pcb board 3, and at the edge of pcb board 3, binding post (not shown) be set, thereby can be electrically connected with LED drive circuit (not shown), driving LED particle 2 is luminous.Some lamp bars 10 are arranged side by side on backboard, and the light that the LED particle is launched carries out mixed light through a mixed light cavity, passes through subsequently the optics adjustment of the blooming pieces such as diffusion sheet, forms a uniform light-emitting area.

Shown in Fig. 1 is common lamp bar structure, and single LED particle is set on pcb board, and the LED distribution of particles is on the center line of pcb board.And common distance and the proportional relation of light mixing distance between two LEDs particles on the adjacent lamps bar, while the lamp bar of this structure being applied in the backlight module of thinner thickness, need to be arranged in this type of lamp bar on backboard thick and fast.On producing line, during man-made assembly lamp bar, this densely arranged meeting causes the difficulty of assembling location.

Therefore in the backlight module of thinner thickness, can use the lamp bar of another kind of structure, as shown in Figure 2, the pcb board of this lamp bar 20 is relatively wide, and the row LED particle of arranging respectively in the two ends up and down of pcb board.Use the backlight module of the lamp bar of this structure, between adjacent two lamp bars, need the certain distance in interval, can not cause the densely arranged of lamp bar, relatively be beneficial to assembling.Yet the area of the pcb board of this kind wide lamp bar structure increases, and cost is higher.

For overcoming the problems referred to above, reduce the cost of lamp bar, a kind of improved lamp bar 30 is suggested.As shown in Figure 3, a side of the pcb board 3 of this type of lamp bar 30 extends several sawtooth be equally spaced 4, and described sawtooth can be trapezoidal, can be also the shapes such as rectangle or square.In the end of each sawtooth, a LEDs particle 2 is set respectively, and the opposite side of sawtooth is not set at pcb board, another row LED particle 2 is set.As shown in Figure 4, the lamp bar of two these structures is complimentary to one another in a side of distribution sawtooth, an its production method i.e. substrate carries out arranging of circuit and develops etching, forming special circuit distributes, then by bending, cut, form complementary in twos lamp bar pcb board, the SMT that finally carries out the LED particle attaches.The lamp bar of this structure, the utilization rate of its pcb board is high, has reduced the cost of pcb board.Yet, when the lamp bar of this structure is press-fited to the backboard to backlight module, the easy stressed shakiness of a side of distribution sawtooth, perk occurs, make the light direction of LED particle change, and then affect the effect of whole picture.

In sum, how providing the cost that effectively reduces the lamp bar, keep the light effect that of whole backlight module simultaneously, is current those skilled in the art's urgent problem.

The utility model content

In view of this, the purpose of this utility model is to provide a kind of LED lamp bar, and its cost is lower.

Another purpose of the present utility model is to provide a kind of backlight module that uses this LED lamp bar, and this backlight module can obtain the good light effect that goes out.

In order to achieve the above object, the utility model provides following technical scheme:

A kind of LED lamp bar, comprise pcb board, in the both sides up and down of described pcb board, extend horizontally away respectively some protuberances that are equally spaced, and described two rows protuberance is symmetric, and each described protuberance is provided with the LED particle.

Preferably, described protuberance is trapezoidal.

Preferably, described protuberance is rectangular.

Preferably, described protuberance is square.

Preferably, the spacing between adjacent two described protuberances is greater than the length of the end of each described protuberance.

The protuberance of the LED lamp bar that the utility model provides can be realized interlaced complementation with the protuberance of another root LED lamp bar, thereby make a substrate of the same area, compared to prior art, can obtain more pcb board, and the pcb board of LED lamp bar provided by the utility model, material consumption less, reduced the cost of manufacture of LED lamp bar.

Based on the above-mentioned LED lamp bar provided, the utility model also provides a kind of backlight module, and described backlight module comprises backboard, and as the LED lamp bar of above-mentioned any one.

The backlight module that the utility model embodiment provides is because the pcb board both sides of adopted LED lamp bar are distributed with protuberance, the global shape symmetry, center of gravity drops on center, therefore, when it is fixed on the backboard of backlight module the time, it is whole stressed more even, avoided LED lamp bar in the prior art that the situation of perk on one side may occur, thereby avoid the rising angle of the LED particle on LED lamp bar to change, and then guaranteed that backlight module goes out uniformity of light, obtain good picture effect.

The accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The structural representation that Fig. 1 is a kind of LED lamp bar of the prior art;

The structural representation that Fig. 2 is another kind of LED lamp bar in prior art;

The structural representation that Fig. 3 is another kind of LED lamp bar in prior art;

The making schematic diagram that Fig. 4 is the LED lamp bar in Fig. 3;

The structural representation of the LED lamp bar that Fig. 5 is the utility model one preferred embodiment

The making schematic diagram that Fig. 6 is the LED lamp bar in Fig. 5.

In accompanying drawing, mark is as follows:

10,20,30,40-LED lamp bar, 2-LED particle, 3-PCB plate, 4-protuberance.

The specific embodiment

The purpose of this utility model is to provide a kind of LED lamp bar, and the structural design of this LED lamp bar can reduce the cost of the pcb board of LED lamp bar effectively.

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment obtained, and all belong to the scope of the utility model protection.

Refer to Fig. 5, the LED lamp bar 40 that the utility model one preferred embodiment provides, comprise pcb board 3, both sides up and down at pcb board 3, horizontal symmetrical is extended several protuberances 4 respectively, between described protuberance 4, be equally spaced, and two rows protuberance 4 is symmetric.In the end of each protuberance 4 central authorities, all be provided with a LEDs particle 2.LED particle 2 can be electrically connected by the circuit (not shown) in pcb board and LED driving power (not shown), thus the driving LED particle light-emitting.

In the present embodiment, the two rows protuberance 4 of the pcb board 3 of LED lamp bar is trapezoidal.Spacing between two adjacent protuberances 4 is a, and the length of the end of each protuberance 4 is b, and the spacing between adjacent two protuberances is greater than the length of the end of each protuberance, i.e. a > b.In other embodiments, protuberance 4 also can be the shapes such as rectangle, square.

Refer to shown in Fig. 6, on production method, the pcb board of the LED lamp bar that embodiment of the present utility model provides be by a substrate, connected up accordingly after, then carry out bending cutting and obtain, the protuberance of every two LED lamp bars all can interlaced complementation.This kind of production method makes a substrate of the same area, compared to prior art, can obtain more pcb board, and this kind of prepared pcb board of mode, and material consumption still less, has reduced the cost of manufacture of LED lamp bar.

The LED lamp bar provided based on above-described embodiment, the utility model embodiment also provides a kind of backlight module, and this backlight module comprises a backboard and the described LED lamp of above-described embodiment bar.While described LED lamp bar being mounted on the backboard of backlight module, normally first some LED lamp bars are put on backboard according to certain interval, re-use press strip or screw etc. and push down after LED lamp bar and snap in or lock to position, corresponding hole on backboard, thereby realize the snaps into position of LED lamp bar.The pcb board both sides of the LED lamp bar that the utility model embodiment provides are distributed with protuberance, the global shape symmetry, center of gravity drops on center, therefore, when it is fixed on the backboard of backlight module the time, it is whole stressed more even, avoided LED lamp bar in the prior art that the situation of perk on one side may occur, thereby avoid the rising angle of the LED particle on LED lamp bar to change, and then guaranteed that backlight module goes out uniformity of light, obtain good picture effect.

To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.Multiple modification to these embodiment will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, realization in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. a LED lamp bar, comprise pcb board, it is characterized in that, in the both sides up and down of described pcb board, extend horizontally away respectively some protuberances that are equally spaced, and described two rows protuberance is symmetric, and each described protuberance is provided with the LED particle.

2. LED lamp bar according to claim 1, is characterized in that, described protuberance is trapezoidal.

3. LED lamp bar according to claim 1, is characterized in that, described protuberance is rectangular.

4. LED lamp bar according to claim 1, is characterized in that, described protuberance is square.

5. LED lamp bar according to claim 1, is characterized in that, the spacing between adjacent two described protuberances is greater than the length of the end of each described protuberance.

6. a LED-backlit module, comprise backboard, it is characterized in that, also comprises as the described LED lamp of any one in claim 1-5 bar.