CN201069503Y - LED back light module for heat radiation system with heat insulation and light penetration material - Google Patents
LED back light module for heat radiation system with heat insulation and light penetration material Download PDFInfo
- Publication number
- CN201069503Y CN201069503Y CNU2007200054295U CN200720005429U CN201069503Y CN 201069503 Y CN201069503 Y CN 201069503Y CN U2007200054295 U CNU2007200054295 U CN U2007200054295U CN 200720005429 U CN200720005429 U CN 200720005429U CN 201069503 Y CN201069503 Y CN 201069503Y
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- led
- heat insulation
- light
- light source
- cooling system
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Abstract
The utility model relates to a LED backlight module group with a heat radiation system made of thermal insulation and transparent material, which comprises a circuit board provided with a light source. The light source is electrically connected with power through the circuit board. An optical-guide and heat-radiating component, a thermal-insulation and transparent component and a light dispersion component are arranged above the light source and the circuit board in sequence; wherein, the light source is a plurality of groups of LEDs. The backlight module group further comprises a metal shell. A plurality of air convection holes are arranged on both sides or around the metal shell and between the thermal insulation and transparent component and the light source, and mandatory heat-radiating fans are arranged at the air convection holes. This way can lower the temperature inside the backlight module group, stabilize the color balance of the backlight module group, and prolong the service life of the backlight module group.
Description
Technical field
The utility model relates to the LED-backlit module, particularly a kind of LED-backlit module with heat insulation light transmissive material cooling system.
Background technology
Liquid crystal display device (LCD) is widely used in very wide fields such as computing machine LCDs, LCD TV, outdoor advertising.But LCD itself is not luminous, and provides light source by the module backlight (BLU) that is arranged at the LCD below, forms the coloured image of different brightness, different color and different gray scales by the pixel electrode on the control LCD.So BLU is one of key component of LCD.
BLU is divided into straight-down negative BLU (light source places module backlight below) and side-light type BLU (light source places module side backlight) according to the light source position; Then be divided into light emitting diode (LED) and cold cathode ray tube BLU such as (CCFL) by light source part.
The utility model is straight-down negative LED-BLU.Because the light source of straight-down negative BLU below LCD, therefore can satisfy the demand of higher brightness or large-size LCD.But the thermal value of high brightness BLU is also big, and the light source of heating is enclosed between LCD and the BLU, the heat that is sent is difficult to distribute, and produces heat accumulation, makes the temperature of LED higher, higher temperature can cause the change amount of R, G, B brightness inconsistent, influences the colour balance of BLU.And have influence on the serviceable life of LED;
Fig. 1 is the graph of a relation of known LCD and BLU.
As shown in Figure 1, whether the cooling system of BLU is reasonable, and can the technical indicator that directly has influence on LCD normally manifest the length with serviceable life.
Summary of the invention
In view of above reason, the purpose of this utility model is: optimize the cooling system of BLU, make to be enclosed in the heat that the light source led between BLU and the LCD sends, can in time discharge outside the televisor, do not produce or reduce heat accumulation.To reach the colour balance that reduces TV built-in temperature, stable television, to prolong the televisor purpose in serviceable life.
To achieve these goals, the utility model provides a kind of LED-backlit module with heat insulation light transmissive material cooling system, includes circuit board, and this circuit board is provided with light source, and described light source is electrically connected by this circuit board; Above described light source and circuit board, once be provided with leaded light heat dissipation element, heat insulation translucent element and light diffusion element; Wherein said light source is many group LED.
Further preferred version of the present utility model is: the below of described circuit board and light source further is provided with light reflection element and leaded light heat dissipation element; Below described heat insulation translucent element, also be provided with a plurality of light reflection elements, vertical corresponding every group of led light source; Above described light diffusion element, also be provided with light blast element; Described heat insulation translucent element is heat-protecting glass, heatpiston's sheet or heatpiston's film.
Further preferred version of the present utility model is: described light source is that red, blue, green three-color LED is many groups LED of one group; Described many group LED arrange by matrix-style.
Further preferred version of the present utility model is: further include metal shell, above-mentioned each parts are contained in this metal shell.Heat insulation translucent element and the position between the light source around described metal shell both sides or the described metal shell are provided with some cross-ventilations hole.The place is provided with the pressure sending out the hot fan in described cross-ventilation hole.
The advantage that the utlity model has: the down straight aphototropism mode set that this module backlight is made up of some groups of redness (R), green (G), blue (B) LED.Arrange by matrix-style between every group of LED; Between light source and light diffusion element, be provided with heat insulation translucent element, the heat that LED distributes is isolated with blooming and LCD display, make heat through discharge orifice is drained into outside the televisor; Also heat transferred to shell is distributed through the leaded light heat dissipation element.To reach the colour balance that reduces temperature in the module backlight, stablize module backlight, to prolong the module backlight purpose in serviceable life.
Above-mentioned and additional features, advantage of the present utility model can further be understood by the detailed description below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of known direct LED backlight and LCD;
Fig. 2 is for the utlity model has heat insulation euphotic LED-backlit modular structure synoptic diagram;
Fig. 3 is heat insulation photic zone, air vent, the pressure sending out the hot fan structural representation of the utility model cooling system;
Fig. 4 is that the utility model red, green, blue three-primary color LED matrix form is arranged synoptic diagram.
Description of reference numerals: LED 10; Circuit board 20; Light diffusion element 30; Leaded light heat dissipation element 40; Heat insulation translucent element 50; Cross-ventilation hole 51; Force sending out the hot fan 52; Light diffusion element 60; Light blast element 70; Shell 80.
Embodiment
Referring to Fig. 2 and Fig. 3 is first embodiment of the present utility model, and a kind of straight-down negative BLU that is made up of LED particularly has heat insulation euphotic LED-backlit modular structure synoptic diagram.
Its light source is made up of some groups of redness (R), green (G), blue (B) LED 10, and every group of LED in the light source arranges (as shown in Figure 4) by matrix-style on circuit board 20, and is electrically connected by circuit board; In addition, also be provided with metal shell 80, perfusion leaded light heat dissipation element is used for heat is reached shell 80 between circuit board and metal shell 80.
Between light diffusion element 60 and light source led 10, be provided with heat insulation translucent element 50, it is heat-protecting glass, heatpiston's sheet or heatpiston's film, can allow light portion that light source sends or all see through, its thermofin or through electroplating or through sputter or through printing or forming through other method, heat that LED 10 is distributed and following light diffusion element 30, light blast element 60, LCD isolate, make heat through shell 80 peripheries discharge orifice 51 is drained into outside the televisor, or through forcing sending out the hot fan 52 outwards to force heat extractions.
Leaded light heat dissipation element 40 is poured between circuit board 20 and the shell 80, and the heat on the LED 10 is conducted to shell 80, reduces the temperature on the LED 10, and do not influence LED 10 luminous propagation;
Described metal shell 80 places the above module outside, coat this module, be used for fixing light source, circuit board 20, light reflection element 30, heat insulation translucent element 50, light diffusion element 60, light blast element 70 etc., just above-mentioned each parts all are contained in the described metal shell 80; And as the plate washer that pours into leaded light heat dissipation element 40; Can also be as the heat sink of module backlight.
In the metal shell both sides or around the metal shell on the position between heat insulation translucent element and the light source, some cross-ventilations hole 51 is set, make in the module backlight hot-air and machine outward cold air carry out convection current, the heat in the machine is discharged to outside the machine.In addition, can also be provided with at 51 places, cross-ventilation hole and force sending out the hot fan 52, when built-in temperature is overheated, force heat extraction.
Be to be understood that, below explanation in conjunction with the embodiments is for the utility model illustrative and nonrestrictive just, in not breaking away from spirit and scope of the present utility model, can make many changes and modification to the utility model, it all will drop in the scope of the present utility model defined by the claims.
Claims (10)
1. LED-backlit module with heat insulation light transmissive material cooling system, it is characterized in that: include circuit board, this circuit board is provided with light source, and described light source is electrically connected by this circuit board; Above described light source and circuit board, once be provided with leaded light heat dissipation element, heat insulation translucent element and light diffusion element; Wherein said light source is many group LED.
2. the LED-backlit module with heat insulation light transmissive material cooling system as claimed in claim 1 is characterized in that: the below of described circuit board and light source further is provided with light reflection element and leaded light heat dissipation element.
3. the LED-backlit module with heat insulation light transmissive material cooling system as claimed in claim 1 is characterized in that: also be provided with a plurality of light reflection elements below described heat insulation translucent element, vertical corresponding every group of led light source.
4. the LED-backlit module with heat insulation light transmissive material cooling system as claimed in claim 1 is characterized in that: also be provided with light blast element above described light diffusion element.
5. the LED-backlit module with heat insulation light transmissive material cooling system as claimed in claim 1 is characterized in that: described heat insulation translucent element is heat-protecting glass, heatpiston's sheet or heatpiston's film.
6. the LED-backlit module with heat insulation light transmissive material cooling system as claimed in claim 1 is characterized in that: described light source is that red, blue, green three-color LED is many groups LED of one group.
7. the LED-backlit module with heat insulation light transmissive material cooling system as claimed in claim 1 is characterized in that: described many group LED arrange by matrix-style.
8. as any described LED-backlit module with heat insulation light transmissive material cooling system in the claim 1 to 7, it is characterized in that: further include metal shell, above-mentioned each parts are contained in this metal shell.
9. the LED-backlit module with heat insulation light transmissive material cooling system as claimed in claim 8 is characterized in that: heat insulation translucent element and the position between the light source around described metal shell both sides or the described metal shell are provided with some cross-ventilations hole.
10. the LED-backlit module with heat insulation light transmissive material cooling system as claimed in claim 9 is characterized in that: the place is provided with the pressure sending out the hot fan in described cross-ventilation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200054295U CN201069503Y (en) | 2007-04-23 | 2007-04-23 | LED back light module for heat radiation system with heat insulation and light penetration material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200054295U CN201069503Y (en) | 2007-04-23 | 2007-04-23 | LED back light module for heat radiation system with heat insulation and light penetration material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069503Y true CN201069503Y (en) | 2008-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200054295U Expired - Fee Related CN201069503Y (en) | 2007-04-23 | 2007-04-23 | LED back light module for heat radiation system with heat insulation and light penetration material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201069503Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082871A1 (en) * | 2007-12-27 | 2009-07-09 | Shenzhen Diguang Electronics Co., Ltd. | A led light source module having a heat conduction system and a heat radiation system |
| CN102650383A (en) * | 2011-02-24 | 2012-08-29 | 夏普株式会社 | Light source module and optical member |
| CN102997132A (en) * | 2012-11-19 | 2013-03-27 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN106054455A (en) * | 2016-08-10 | 2016-10-26 | 武汉华星光电技术有限公司 | Direct-lit backlight module |
| CN106338859A (en) * | 2015-07-06 | 2017-01-18 | 三星电子株式会社 | Backlight unit of display apparatus and display apparatus |
| CN106707667A (en) * | 2015-07-17 | 2017-05-24 | 深圳前海智云谷科技有限公司 | Display device for projection |
| CN109164633A (en) * | 2018-09-10 | 2019-01-08 | 万维显示科技（深圳）有限公司 | LCD display |
-
2007
- 2007-04-23 CN CNU2007200054295U patent/CN201069503Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082871A1 (en) * | 2007-12-27 | 2009-07-09 | Shenzhen Diguang Electronics Co., Ltd. | A led light source module having a heat conduction system and a heat radiation system |
| CN102650383A (en) * | 2011-02-24 | 2012-08-29 | 夏普株式会社 | Light source module and optical member |
| CN102997132A (en) * | 2012-11-19 | 2013-03-27 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN106338859A (en) * | 2015-07-06 | 2017-01-18 | 三星电子株式会社 | Backlight unit of display apparatus and display apparatus |
| CN106707667A (en) * | 2015-07-17 | 2017-05-24 | 深圳前海智云谷科技有限公司 | Display device for projection |
| CN106054455A (en) * | 2016-08-10 | 2016-10-26 | 武汉华星光电技术有限公司 | Direct-lit backlight module |
| CN109164633A (en) * | 2018-09-10 | 2019-01-08 | 万维显示科技（深圳）有限公司 | LCD display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20150423 |
|
| EXPY | Termination of patent right or utility model |