CN201875577U

CN201875577U - LED (light-emitting diode) back light module

Info

Publication number: CN201875577U
Application number: CN2010206117980U
Authority: CN
Inventors: 姜洪波
Original assignee: Konka Group Co Ltd
Current assignee: Konka Group Co Ltd
Priority date: 2010-11-17
Filing date: 2010-11-17
Publication date: 2011-06-22
Anticipated expiration: 2020-11-17

Abstract

The utility model provides an LED (light-emitting diode) back light module which comprises a light guide plate and a light bar set with at least two LED light bars, wherein a plurality of LED light sources are sequentially arranged on the LED light bars, the side edges of the LED light bars are connected with each other, and the light bar set is arranged at one side of the light guide plate. The conventional one LED light bar is changed into at least two LED light bars by the LED back light module, and the LED light sources with the same number are dispersed onto the LED light bars, so that the distances between the adjoining LED light sources on the LED back light module are enlarged, and the heat dissipation performance is good.

Description

The LED-backlit module

[technical field]

The utility model relates to module backlight, relates in particular to a kind of LED-backlit module.

[background technology]

Along with lcd technology is more and more ripe, traditional kinescope is more and more replaced by LCDs.LCDs belongs to passive luminous display screen, and liquid crystal itself is not luminous, therefore need provide module backlight as light source.

Divide from the classification of light source, module backlight can be divided into CCFL module backlight and LED-backlit module etc.Wherein, the LED-backlit module can be divided into direct-light type LED backlight module and LED side module backlight according to the LED position.Traditional LED-backlit module requires to arrange plurality purpose LED on the lamp bar, close together between the adjacent LED, and it is relatively poor to dispel the heat.

[utility model content]

Based on this, be necessary to provide a kind of heat radiation LED-backlit module preferably.

A kind of LED-backlit module comprises LGP and has the lamp bar group of at least two LED lamp bars that be aligned in sequence with a plurality of led light sources on the described LED lamp bar, the side of described LED lamp bar interconnects, and described lamp bar is mounted on LGP one side.

Preferably, interconnect by connector between the described LED lamp bar.

Preferably, the spacing between per two adjacent described led light sources is greater than 14mm.

Preferably, the quantity of described LED lamp bar is two, and described two LED lamp bars form luminous subtended angle each other.

Preferably, the quantity of described LED lamp bar is three, and described three LED lamp sliver transvers sections are arc.

Preferably, the led light source arrangement position difference on each described LED lamp bar.

Preferably, described LGP comprise incidence surface, the exiting surface that links to each other with incidence surface and with exiting surface bottom surface in opposite directions, described lamp bar group and described incidence surface are provided with in opposite directions.

Preferably, the light emission direction of described led light source is vertical with described LGP incidence surface.

Preferably, the light-emitting area of described led light source is parallel with described LGP incidence surface.

Preferably, described bottom surface has lattice point structure.

This LED-backlit module changes at least two LED lamp bars with a traditional LED lamp bar, and the led light source of same number is dispersed on the many LED lamp bars, makes that the distance of adjacent LED light source becomes big on this LED-backlit module, and heat radiation is good.

[description of drawings]

Fig. 1 is the schematic cross-section of the LED-backlit module of an embodiment;

Fig. 2 is the schematic cross-section of the LED-backlit module of another embodiment;

Fig. 3 shows the schematic diagram of the first lamp bar of LED-backlit module for Fig. 1;

Fig. 4 shows the schematic diagram of the second lamp bar of LED-backlit module for Fig. 1.

[specific embodiment]

Below in conjunction with drawings and Examples the LED-backlit module is further explained explanation.

LED-backlit module as shown in Figure 1, the lamp bar group that comprises LGP 10 and comprise two LED lamp bars.Two LED lamp bars are designated as the first lamp bar 20 and the second lamp bar, 30, the first lamp bars, 20 sides link to each other with the side of the second lamp bar 30, and form luminous subtended angle between the two lamp bars.LGP 10 comprise incidence surface 12, the exiting surface 14 that links to each other with incidence surface 12 and with exiting surface 14 bottom surface 16 in opposite directions, the light-emitting area 22 and the incidence surface 12 of the first lamp bar 20 are provided with in opposite directions, the light-emitting area 32 and the incidence surface 12 of the second lamp bar 30 are provided with in opposite directions, form luminous subtended angle between the second lamp bar 20 and the second lamp bar 30.LGP 10 bottom surface 16 on have lattice point structure 18.

LED-backlit module as shown in Figure 2, basic identical with LED-backlit module shown in Figure 1, just the angle of two LED lamp bars setting is had any different slightly.

The first lamp bar 20 as shown in Figure 3 comprises first pcb board 24, is arranged on a plurality of first led light sources 26 on first pcb board 24 and is arranged on first connector 28 that being used on first pcb board 24 connects the second lamp bar 30.

In the present embodiment, a plurality of first led light sources 26 are arranged in order, and the spacing between per two adjacent first led light sources 26 is greater than 14mm.

The second lamp bar 30 as shown in Figure 4 comprises second pcb board 34, is arranged on a plurality of second led light sources 36 on second pcb board 34 and is arranged on second connector 38 that being used on second pcb board 34 connects the first lamp bar 20.

In the present embodiment, a plurality of second led light sources 36 are arranged in order, and the spacing between per two adjacent second led light sources 36 is greater than 14mm.

In order to improve the uniformity of luminance of lamp bar group, first led light source 26 on the first lamp bar 20 is different with second led light source, 36 arrangement positions on the second lamp bar 30, can select staggered form mutually, also can adopt other forms.

General, in order to improve the light source service efficiency, the light emission direction of first led light source 26 and second led light source 36 is all perpendicular to the incidence surface 12 of LGP 10, and the light-emitting area of first led light source 26 and second led light source 36 all is parallel to the incidence surface 12 of LGP 10.

The side of the side of the first lamp bar 20 and the second lamp bar 30 connects together with second connector 38 by first connector 28.

General, can design lamp bar group and have three, four or more lamp bars, to have three lamp bars is example, can be designated as the first lamp bar, the second lamp bar and the 3rd lamp bar, keep the incidence surface of the first lamp bar, the second lamp bar and the 3rd lamp bar and LGP to be provided with in opposite directions and get final product, the first lamp bar, the second lamp bar and the 3rd lamp bar side back cross section that links to each other is arc.

The above embodiment has only expressed one or more embodiments of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims

1. a LED-backlit module is characterized in that, comprises LGP and has the lamp bar group of at least two LED lamp bars, and be aligned in sequence with a plurality of led light sources on the described LED lamp bar, the side of described LED lamp bar interconnects, and described lamp bar is mounted on LGP one side.

2. LED-backlit module as claimed in claim 1 is characterized in that, interconnects by connector between the described LED lamp bar.

3. LED-backlit module as claimed in claim 1 is characterized in that, the spacing between per two adjacent described led light sources is greater than 14mm.

4. LED-backlit module as claimed in claim 1 is characterized in that, the quantity of described LED lamp bar is two, and described two LED lamp bars form luminous subtended angle each other.

5. LED-backlit module as claimed in claim 1 is characterized in that, the quantity of described LED lamp bar is three, and described three LED lamp sliver transvers sections are arc.

6. LED-backlit module as claimed in claim 1 is characterized in that, the led light source arrangement position difference on each described LED lamp bar.

7. as each described LED-backlit module in the claim 1～6, it is characterized in that, described LGP comprise incidence surface, the exiting surface that links to each other with incidence surface and with exiting surface bottom surface in opposite directions, described lamp bar group and described incidence surface are provided with in opposite directions.

8. LED-backlit module as claimed in claim 7 is characterized in that, the light emission direction of described led light source is vertical with described LGP incidence surface.

9. LED-backlit module as claimed in claim 7 is characterized in that, the light-emitting area of described led light source is parallel with described LGP incidence surface.

10. LED-backlit module as claimed in claim 7 is characterized in that described bottom surface has lattice point structure.