CN100376980C - Light source shade and backlight module - Google Patents
Light source shade and backlight module Download PDFInfo
- Publication number
- CN100376980C CN100376980C CNB2004100153041A CN200410015304A CN100376980C CN 100376980 C CN100376980 C CN 100376980C CN B2004100153041 A CNB2004100153041 A CN B2004100153041A CN 200410015304 A CN200410015304 A CN 200410015304A CN 100376980 C CN100376980 C CN 100376980C
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- Prior art keywords
- light source
- source cover
- holes
- light
- cover
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Abstract
The present invention relates to a light source cover which can be used in a back light module. The present invention comprises a side wall which is provided with a plurality of holes, and the holes can be used for outwards dissipating heat which is in the light source cover.
Description
[technical field]
The invention relates to a kind of light source cover and use the module backlight of this light source cover.
[background technology]
Module backlight is widely used in display device, for example LCD monitor, mobile phone etc., but numerous display device are non-autoluminescences to be shown, mainly by controlling passing through or the obstructed realization of coming of light that external light source sends, therefore need corresponding backlight or preceding optical mode group, this backlight or preceding optical mode group can realize Presentation Function with photoconduction that external light source sent to display panel.
Seeing also Fig. 1, is the schematic perspective view of a kind of prior art module backlight.This module 8 backlight comprises a light guide plate 81, a reflector plate 82, a diffusion sheet 83, a prismatic lens 84, a light source 85 and light source cover 86, this light source 85 be cold cathode fluorescent lamp (Cold CathodeFluorescent Lamps, CCFL).This light guide plate 81 comprises an incidence surface 811, a bottom surface 812 and an exiting surface 813, and reflector plate 82, light guide plate 81, diffusion sheet 83, prismatic lens 84 are docile and obedient the overlapping discharging of preface.This light source cover 86 comprises the outlet 862 of a curved wall 861 and relative this curved wall 861, and this light source 85 is arranged in this light source cover 86, and this light source cover 86 is arranged on incidence surface 811 1 sides of light guide plate 81.The light beam that sends from light source 85 is directed to light guide plate 81 under the effect of light source cover 86, this light beam is directed to diffusion sheet 83 under the effect of light guide plate 81 and reflector plate 82, and become diffuse light under the effect of diffusion sheet 83, scattered light is assembled under the effect of concentration piece 84 and is directed to liquid crystal panel (figure do not show).
But, this light source 85 is that 360 degree are luminous, folk prescription is to bright dipping and light source cover 86 is, through repeatedly still not entering the invalid light of light guide plate 81 in light source cover 86 internal vibrations after the reflection, form thermal source and can not effectively dispel the heat, influence the used diaphragm of module backlight 8, for example reflector plate 82, prismatic lens 84 etc., make its generation deformation of being heated, thereby influence the light effect that of module 8 backlight.
[summary of the invention]
In order to overcome the shortcoming that light source cover in the prior art module backlight can not efficiently radiates heat, but the invention provides a kind of light source cover of efficiently radiates heat.
In order to overcome the shortcoming that prior art module backlight can not efficiently radiates heat, but the invention provides a kind of module backlight of efficiently radiates heat.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of light source cover that is used for module backlight, comprise a sidewall, a plurality of holes are set on this sidewall, the bore dia in these a plurality of holes diminishes to both sides gradually from the centre, spacing becomes greatly gradually from the centre to both sides between the hole in these a plurality of holes, and these a plurality of holes can outwards be distributed the heat in the light source cover.
The present invention solves the technical scheme that another technical matters adopts: a kind of module backlight is provided, comprise a light guide plate, a light source and a light source cover, this light guide plate comprises an incidence surface, this light source and light source cover are arranged on incidence surface one side, this light source is arranged in this light source cover, this light source cover comprises a sidewall, a plurality of holes are set on this sidewall, the bore dia in these a plurality of holes diminishes to both sides gradually from the centre, spacing becomes greatly gradually from the centre to both sides between the hole in these a plurality of holes, and these a plurality of holes can outwards be distributed the heat in the light source cover.
Compare with prior art, the invention has the beneficial effects as follows: a plurality of holes are set on the light source cover sidewall, the bore dia in these a plurality of holes diminishes to both sides gradually from the centre, spacing becomes big gradually from the centre to both sides between the hole in these a plurality of holes, the heat that invalid light produced effectively can be shed, avoid near the light source cover diaphragm to be heated and produce deformation and influence the light effect that of the module backlight of using this light source cover.
[description of drawings]
Fig. 1 is the schematic perspective view of a kind of prior art module backlight.
Fig. 2 is the schematic perspective view of light source cover first embodiment of the present invention.
Fig. 3 is the schematic perspective view of light source cover second embodiment of the present invention.
Fig. 4 is the schematic perspective view of the present invention's module first embodiment backlight.
Fig. 5 is the schematic perspective view of the present invention's module second embodiment backlight.
[embodiment]
Seeing also Fig. 2, is the schematic perspective view of light source cover first embodiment of the present invention.This light source cover 1 is long linear structure, comprises a sidewall 11, outlet 14 and a plurality of associated sidewall 12,13 perpendicular to this sidewall 11 relative with this sidewall 11.Wherein, at this sidewall 11 a plurality of holes 15 are set, these a plurality of holes 15 are circular, linearly are equally spaced, and the aperture is consistent.
See also Fig. 3, be to use the schematic perspective view of the module backlight 2 of light source cover 1 of the present invention.This module 2 backlight comprises a light guide plate 20, a light source 21, a light source cover 1, a reflector plate 26, a diffusion sheet 27 and a prismatic lens 28, this light source 21 is cold cathode fluorescent lamps, this reflector plate 26, light guide plate 20, diffusion sheet 27, prismatic lens 28 are docile and obedient the overlapping discharging of preface, this light guide plate 20 comprises an incidence surface 201, this light source 21 and light source cover 1 are arranged on incidence surface 201 1 sides, and this light source 21 is arranged on this light source cover 1 inside.
The a part of light that sends from light source 21 is directed to light guide plate 20 under the effect of light source cover 1, and another part through the invalid light that still can not enter light guide plate 20 after the reflection repeatedly in light source cover 1 internal vibration and form thermal source, and the heat of thermal source is in time discharged light source covers 1 by the hole on the sidewall 11 15, thereby has avoided near the light source cover 1 diaphragm to be heated and produce deformation.
Seeing also Fig. 4, is the schematic perspective view of light source cover second embodiment of the present invention.This light source cover 3 and light source cover 1 are roughly the same, and its key distinction is that this light source cover 3 comprises a curved wall 31, and a plurality of holes 35 are set on this sidewall 31, these a plurality of holes 35 are circular, linearly distribute, spacing becomes greatly gradually from the centre to both sides between the hole, and its aperture is also corresponding diminishes.
See also Fig. 5, be to use the schematic perspective view of the module backlight 4 of light source cover 3 of the present invention.This module 4 backlight comprises a light guide plate 30, a light source 31, a light source cover 1, a reflector plate 36, a diffusion sheet 37 and a prismatic lens 38, this light source 31 is cold cathode fluorescent lamps, this reflector plate 36, light guide plate 30, diffusion sheet 37, prismatic lens 38 are docile and obedient the overlapping discharging of preface, this light guide plate 30 comprises an incidence surface 301, this light source 31 and light source cover 1 are arranged on incidence surface 301 1 sides, and this light source 31 is arranged on this light source cover 1 inside.
Light source cover of the present invention and module backlight are not limited to said structure, and for example: this light source cover can also be prismatic, ellipse etc.; This hole can be arranged on any sidewall, and its shape can be rectangle, rhombus, ellipse, star etc.
Claims (5)
1. light source cover that is used for module backlight, comprise a sidewall, it is characterized in that: a plurality of holes are set on this sidewall, the bore dia in these a plurality of holes diminishes to both sides gradually from the centre, spacing becomes greatly gradually from the centre to both sides between the hole in these a plurality of holes, and these a plurality of holes can outwards be distributed the heat in the light source cover.
2. light source cover according to claim 1 is characterized in that: these a plurality of holes are circle, rectangle, rhombus, ellipse or star.
3. light source cover according to claim 1 is characterized in that: these a plurality of holes linearly distribute.
4. module backlight, comprise a light guide plate, a light source and a light source cover, this light guide plate comprises an incidence surface, and this light source and light source cover are arranged on incidence surface one side, this light source is arranged in this light source cover, it is characterized in that: this light source cover is any described light source cover in the claim 1 to 3.
5. according to 4 described modules backlight of claim the, it is characterized in that: this light source is a cold cathode fluorescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153041A CN100376980C (en) | 2004-02-05 | 2004-02-05 | Light source shade and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100153041A CN100376980C (en) | 2004-02-05 | 2004-02-05 | Light source shade and backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1651990A CN1651990A (en) | 2005-08-10 |
| CN100376980C true CN100376980C (en) | 2008-03-26 |
Family
ID=34868003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100153041A Expired - Fee Related CN100376980C (en) | 2004-02-05 | 2004-02-05 | Light source shade and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100376980C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081477U (en) * | 1990-09-13 | 1991-07-24 | 天津市天海经济技术发展公司 | Art wall lamp |
| CN2546911Y (en) * | 2002-04-10 | 2003-04-23 | 廖骏吉 | Negative phototropic cover radiating structure |
| WO2003056236A1 (en) * | 2001-12-25 | 2003-07-10 | Matsushita Electric Industrial Co., Ltd. | Illumination unit and liquid crystal display device using the unit |
| CN2588189Y (en) * | 2002-12-30 | 2003-11-26 | 苏柏兴 | Double corrugated reflection glass cup shape lampshade combination lamp casing with radiation holes for motorcycle |
-
2004
- 2004-02-05 CN CNB2004100153041A patent/CN100376980C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081477U (en) * | 1990-09-13 | 1991-07-24 | 天津市天海经济技术发展公司 | Art wall lamp |
| WO2003056236A1 (en) * | 2001-12-25 | 2003-07-10 | Matsushita Electric Industrial Co., Ltd. | Illumination unit and liquid crystal display device using the unit |
| CN2546911Y (en) * | 2002-04-10 | 2003-04-23 | 廖骏吉 | Negative phototropic cover radiating structure |
| CN2588189Y (en) * | 2002-12-30 | 2003-11-26 | 苏柏兴 | Double corrugated reflection glass cup shape lampshade combination lamp casing with radiation holes for motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1651990A (en) | 2005-08-10 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20180205 |