CN100419516C - Backlight module group - Google Patents
Backlight module group Download PDFInfo
- Publication number
- CN100419516C CN100419516C CNB2003101125769A CN200310112576A CN100419516C CN 100419516 C CN100419516 C CN 100419516C CN B2003101125769 A CNB2003101125769 A CN B2003101125769A CN 200310112576 A CN200310112576 A CN 200310112576A CN 100419516 C CN100419516 C CN 100419516C
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- CN
- China
- Prior art keywords
- heat
- fluorescent tube
- module backlight
- pipe
- diffuser plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Planar Illumination Modules (AREA)
Abstract
The present invention discloses a back light module. The back light module comprises at least one lamp tube, a diffuser plate, a reflecting plate and a heat pipe radiator, wherein the diffuser plate is arranged above the lamp tube, the reflecting plate is arranged below the lamp tube, and the heat pipe radiator is arranged between the diffuser plate and the reflecting plate.
Description
[technical field]
The invention relates to a kind of module backlight, particularly a kind of module backlight with heat abstractor.
[background technology]
Because LCD has advantages such as in light weight, thin thickness, power consumption are little, be widely used in information equipments such as notebook computer, mobile phone, personal digital assistant. because liquid crystal itself does not have the characteristics of luminescence, need provide module backlight to realize Presentation Function for it.
As everyone knows, module backlight can be divided into side-light type and two kinds of designs of straight-down negative. generally speaking, for the small-medium size LCD, side-light type module backlight has light weight, slim, advantages such as low consumption electric power. still, along with science and technology is growing, demand to the large scale liquid crystal display is surging day by day, and large scale side-light type module backlight is no longer satisfactory in the performance of various aspects such as weight and consumption electric power, and the light utilization efficiency of side-light type module backlight is lower, its number of light sources of holding is also very limited, can't reach the brightness requirement of large scale liquid crystal display. therefore, the down straight aphototropism mode set that does not contain light guide plate is grown up.
A kind of down straight aphototropism mode set of prior art can be consulted the TaiWan, China patent the 542nd of bulletin on July 21st, 2003, No. 883, as shown in Figure 1, this down straight aphototropism mode set 50 is used for LCD 12, it comprises a diffuser plate 16, be arranged on brightening piece 20 and diffusion sheet 22 on this diffuser plate 16 in regular turn, one reflecting plate 58, at least one fluorescent tube 14 and at least one heat sink 59. these reflecting plates 58 have a bottom surface 58a and inclination face 58b, at least offer one first couple of discharge orifice 62a on the 58a of its bottom surface, and this reflecting plate 58 is arranged in this first room 60 corresponding to this first couple of discharge orifice 62a with these diffuser plate 16 definition one first room 60. these fluorescent tubes 14. this heat sink 59 and this reflecting plate 58 definition one second room 70, and this first couple of discharge orifice 62a communicates with this second room 70. offer one second pair of discharge orifice 64 on the inclination face 58b of this reflecting plate 58, and this second pair of discharge orifice 64 communicates with this second room 70. this heat sink 59 combines with a shell 54, and is pressed into fin-shaped radiator structure 54a.The heat that this fluorescent tube 14 is produced can be transmitted to this heat sink 59 by the convection action between this first room 60 and this second room 70, thereby keeps this module 50 backlight at the equal temperature state work of finishing drilling, to prolong the serviceable life of this fluorescent tube 14.
But, because only being the mode by natural convection air, the heat that this fluorescent tube 14 produces is transmitted to heat sink 59, though it can keep this module 50 backlight to a certain extent at the equal temperature state work of finishing drilling, only be 11.3 to 55W/m because rely on the amount of thermal conduction of natural convection air
2.K, it still exists heat to distribute slow problem in heat radiation, and when 50 working times of module backlight were long, temperature inside still can slowly raise, thereby influences the serviceability of fluorescent tube 14.
[summary of the invention]
For the module heat backlight that overcomes prior art distributes slow problem, the invention provides a kind of radiating rate module backlight faster.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of module backlight is provided, it comprises at least one fluorescent tube, a diffuser plate, a reflecting plate and a heat-pipe radiating apparatus, this diffuser plate is arranged on this fluorescent tube top, this reflecting plate is arranged on this fluorescent tube below, this heat-pipe radiating apparatus comprises heat pipe, this heat pipe is made by transparent material, and this heat pipe is arranged between this diffuser plate and this fluorescent tube.
Compared to prior art, because module backlight of the present invention is to adopt heat-pipe radiating apparatus, utilize heat pipe to have the characteristic of high heat conduction velocity, the heat that can fast fluorescent tube in the module backlight be produced conducts, and therefore can improve the internal heat dissipating effect of module backlight.
[description of drawings]
Fig. 1 is the diagrammatic cross-section of prior art module backlight.
Fig. 2 is the diagrammatic cross-section of the present invention's module first embodiment backlight.
Fig. 3 is the floor map of the heat-pipe radiating apparatus of the present invention's module first embodiment backlight.
Fig. 4 is the diagrammatic cross-section of the heat pipe of the present invention's module first embodiment backlight.
Fig. 5 is the diagrammatic cross-section of the present invention's module second embodiment backlight.
[embodiment]
Seeing also Fig. 2 and Fig. 3, is first embodiment of the present invention's module backlight. this module 30 backlight comprises three fluorescent tubes 35, diffuser plate 31, brightening piece 32, diffusion sheet 33, a reflecting plate 34 and a heat-pipe radiating apparatus 36.This diffuser plate 31, brightening piece 32 and diffusion sheet 33 are arranged on this fluorescent tube 35 tops in regular turn.This reflecting plate 34 is arranged on this fluorescent tube 35 belows, is used for that the light that this fluorescent tube 35 produces is reflexed to these diffuser plate 31. these heat-pipe radiating apparatus 36 and is arranged between this diffuser plate 31 and this fluorescent tube 35.
This fluorescent tube 35 is the cold cathode fluorescent lamp pipe, this diffuser plate 31 is provided with a plurality of scattering netted dots (figure does not show) with fluorescent tube 35 corresponding positions, this scattering netted dot can further spread the light that fluorescent tube 35 sends, and the light that fluorescent tube 35 is sent is converted to uniform in-plane light through behind diffuser plate 31, brightening piece 32 and the diffusion sheet 33.
The portion of being heated 361 of fan 364. these heat pipes 360 that this heat-pipe radiating apparatus 36 comprises the heat pipe 360 with the portion of being heated 361 and heat unit 362, a plurality of fins 363 that are connected this heat unit 362, be provided with near fin 363 is positioned at the inside, space (indicating) that this diffuser plate 31 and this reflecting plate 34 are limited, this portion 361 of being heated absorbs the heat that fluorescent tube 35 produces, and heat is transmitted to heat unit 362 fast, the a plurality of fins 363 that are connected heat unit 362 also have heat sinking function, fan 364 blows gas flow, and heat distributes on the acceleration fin 363.
Please consult Fig. 4 together, this heat pipe 360 is bodys that transparent material is made, has capillary pipe structure 365 in it, water or other fluid 366, these heat pipe 360 internal pressures are extremely low, its principle of work is: because heat pipe 360 internal pressures are extremely low, be heated and after portion 361 absorbs heat near the fluid 366 the portion 361 of being heated in the heat pipe 360 vaporized at a lower temperature, after steam pressure raises, make gas flow to the lower heat unit 362 of temperature, this gas discharges heat after heat unit 362 coolings, and be condensed into liquid, being back to the portion of being heated 361 by capillary pipe structure 365 again, thereby finishing a circulation. this transparent material is a glass in the present embodiment. this heat pipe 360 is provided with perpendicular to fluorescent tube 35.
The heat pipe 360 of the present invention's module 30 backlight can make heat keep conduction continuously and consume, and, because the amount of thermal conduction with water during as fluid is 280 to 17000W/m
2.K, the heat transfer efficiency that is obtained has the characteristic of high heat conduction velocity more than the heat radiation plate hight with natural convection, and the heat that can fast fluorescent tube 35 in the module 30 backlight be produced conducts, and therefore can improve the internal heat dissipating effect of module 30 backlight.
Seeing also Fig. 5, is the diagrammatic cross-section of the present invention's module second embodiment backlight. this module 40 backlight comprises three fluorescent tubes 45, diffuser plate 41, brightening piece 42, diffusion sheet 43, a reflecting plate 44 and a heat-pipe radiating apparatus 46.This diffuser plate 41, brightening piece 42 and diffusion sheet 43 are arranged on this fluorescent tube 45 tops in regular turn, and reflecting plate 44 is arranged on this fluorescent tube 45 belows.This heat-pipe radiating apparatus 46 is arranged between this diffuser plate 41 and this fluorescent tube 45, the fan 464 that it comprises heat pipe 460, is connected a plurality of fins 463 of these heat pipe 460 heat units, be provided with near fin 463.
This module 40 backlight is that with module 30 differences backlight of the present invention this heat pipe 460 is to be parallel to this fluorescent tube 45 to be provided with, and it has the advantage of high heat conduction velocity equally.
Module backlight of the present invention can have following other change design, for example:
This heat pipe can be arranged between this reflecting plate and this fluorescent tube;
This heat pipe also can be arranged between fluorescent tube and the fluorescent tube, to realize the lightening of module backlight;
The material of this heat pipe also can be quartzy (SiO
2), again because diamond has splendid heat conductivity, further plating one deck diamond film on the heat pipe that transparent materials such as glass or quartz are made is to increase heat conduction velocity.
Claims (10)
1. module backlight, comprise at least one fluorescent tube, a diffuser plate and a reflecting plate, this diffuser plate is arranged on this fluorescent tube top, this reflecting plate is arranged on this fluorescent tube below, it is characterized in that: this module backlight further comprises a heat-pipe radiating apparatus, this heat-pipe radiating apparatus comprises heat pipe, and this heat pipe is made by transparent material, and this heat pipe is arranged between this diffuser plate and this fluorescent tube.
2. module backlight as claimed in claim 1 is characterized in that: the corresponding position of this diffuser plate and fluorescent tube is provided with scattering netted dot.
3. module backlight as claimed in claim 1 is characterized in that: this heat pipe has the portion of being heated and heat unit.
4. module backlight as claimed in claim 3 is characterized in that: this heat-pipe radiating apparatus further comprises the fin that is connected this heat unit.
5. module backlight as claimed in claim 4 is characterized in that: this heat-pipe radiating apparatus further comprises the fan that is provided with near fin.
6. module backlight as claimed in claim 1 is characterized in that: this transparent material is glass or quartz.
7. module backlight as claimed in claim 1 is characterized in that: the outer further plating one deck diamond film of this transparent material.
8. module backlight as claimed in claim 1 is characterized in that: this heat pipe is parallel or be provided with perpendicular to this fluorescent tube.
9. module backlight as claimed in claim 1 is characterized in that: this diffuser plate top further is provided with a brightening piece and a diffusion sheet.
10. module backlight as claimed in claim 1 is characterized in that: this inside heat pipe has capillary pipe structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101125769A CN100419516C (en) | 2003-12-12 | 2003-12-12 | Backlight module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101125769A CN100419516C (en) | 2003-12-12 | 2003-12-12 | Backlight module group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1627148A CN1627148A (en) | 2005-06-15 |
| CN100419516C true CN100419516C (en) | 2008-09-17 |
Family
ID=34759825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101125769A Expired - Fee Related CN100419516C (en) | 2003-12-12 | 2003-12-12 | Backlight module group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100419516C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437277C (en) * | 2005-09-22 | 2008-11-26 | 鸿富锦精密工业（深圳）有限公司 | Back-light model group |
| CN103323894B (en) * | 2013-06-18 | 2015-08-19 | 青岛海信电器股份有限公司 | The job operation of diffuser plate dot and processing unit (plant) |
| CN111787652B (en) * | 2020-01-15 | 2022-05-06 | 彩融电光源技术（上海）有限公司 | Area array type ultra-high strength infrared irradiation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274085A (en) * | 1990-03-23 | 1991-12-05 | Mitsubishi Electric Corp | Display device |
| JPH06273763A (en) * | 1993-03-22 | 1994-09-30 | Sony Corp | Backlight unit |
| JPH11193857A (en) * | 1998-01-06 | 1999-07-21 | Jeol Ltd | Ball screw |
| JPH11202800A (en) * | 1998-01-19 | 1999-07-30 | Sony Corp | Illumination device for display device |
| JP3274085B2 (en) * | 1997-05-12 | 2002-04-15 | 株式会社住建産業 | Molded building materials |
-
2003
- 2003-12-12 CN CNB2003101125769A patent/CN100419516C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274085A (en) * | 1990-03-23 | 1991-12-05 | Mitsubishi Electric Corp | Display device |
| JPH06273763A (en) * | 1993-03-22 | 1994-09-30 | Sony Corp | Backlight unit |
| JP3274085B2 (en) * | 1997-05-12 | 2002-04-15 | 株式会社住建産業 | Molded building materials |
| JPH11193857A (en) * | 1998-01-06 | 1999-07-21 | Jeol Ltd | Ball screw |
| JPH11202800A (en) * | 1998-01-19 | 1999-07-30 | Sony Corp | Illumination device for display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1627148A (en) | 2005-06-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20080917 Termination date: 20171212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |