CN2650171Y - Direct-down backlight board - Google Patents
Direct-down backlight board Download PDFInfo
- Publication number
- CN2650171Y CN2650171Y CN 03230607 CN03230607U CN2650171Y CN 2650171 Y CN2650171 Y CN 2650171Y CN 03230607 CN03230607 CN 03230607 CN 03230607 U CN03230607 U CN 03230607U CN 2650171 Y CN2650171 Y CN 2650171Y
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- CN
- China
- Prior art keywords
- cold cathode
- fluorescent lamp
- cathode fluorescent
- backlight plate
- type backlight
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Abstract
A bottom lighting backlight plate is provided, which comprises a frame, a white reflective piece laid on the bottom and the inner wall of the frame, a cold cathode lamp arranged on the frame wall in parallel and a covered disperse plate, high reflective shading strips are coated alternately on the upper surface of cold cathode lamp, the reflective surface faces to the central line of lamp axis, the angle of the high reflective shading strip coating the upper surface of cold cathode lamp is 45 degrees to 360 degrees; the high reflective shading strips on adjacent two cold cathode lamps are alternately arranged. The utility model can solve the technical problems of existing bottom lighting backlight plate of the light reflection not uniform and uneven of brightness, and can be especially used for the backlight plate with a large area bottom lighting.
Description
Technical field:
The utility model relates to cold cathode fluorescent lamp, particularly a kind of Staight downward type backlight plate that adopts many cold cathode fluorescent lamp.
Background technology:
Staight downward type backlight plate (Vertical Backlight) is to adopt many cold cathode fluorescent lamp (ColdCathode Fluorescent Lamp, be called for short CCFL) be arranged in parallel as illuminating source, hope evenly is a kind of backing structure of area source by diffusion technique with line source, and it has higher brightness and visual angle range than side casting type backlight.Generally, the structure of Staight downward type backlight plate as shown in Figure 1, it mainly comprises a framework 1 ', be layed in white reflection sheet 2 ' on the framework 1 ' inner bottom surface, be set up on the framework 1 ' wall and cold cathode fluorescent lamp 3 ' that parallel interval is arranged and be covered on diffuser plate 4 ' on cold cathode fluorescent lamp 3 ' and the framework 1 '.In this case; we can see the inconsistent striped of brightness on diffuser plate 4 '; though can be by on diffuser plate 4 ', adding diffusion sheet 5 ', BEF (Brightness Enhancement Films) 6 ', diaphragm 7 '; with the bigger bright rays of this contrast that weakens; but can not make light even fully after all; special in the product that needs large tracts of land Staight downward type backlight plate, more originally do not have the effect of " area source ".
The utility model content:
It is inhomogeneous that the utility model will solve existing Staight downward type backlight plate glazed thread projection, so that produce the technical matters of the inconsistent striped of brightness
For solving the problems of the technologies described above, the utility model is achieved in that
A kind of Staight downward type backlight plate, comprise a framework, be layed on the framework inner bottom surface and frame inner wall on the white reflection sheet, be set up on the frame wall and the cold cathode fluorescent lamp that is arranged parallel to each other and be placed on diffuser plate on above-mentioned cold cathode fluorescent lamp and the framework, it is characterized in that: the upper surface axially spaced-apart of each cold cathode fluorescent lamp is coated with high reflection shading strip, its reflecting surface is towards the fluorescent tube longitudinal center line, and the angle that this height reflection shading strip covers the cold cathode fluorescent lamp upper surface is 45 °-360 °; The height reflection shading strip of adjacent two cold cathode fluorescent lamp is intervening portion and arranges.
The axial width of high reflection shading strip is 0.5mm-2.0mm on this cold cathode fluorescent lamp.
The axial width of high reflection shading strip is identical with the axial width that height reflects the printing opacity space between the shading strip on this cold cathode fluorescent lamp.
The printing opacity space at two ends is greater than the printing opacity space of centre on this cold cathode fluorescent lamp.
These cold cathode fluorescent lamp two ends are provided with teleflex.
Advantage of the present invention is as follows:
The upper surface axially spaced-apart of each cold cathode fluorescent lamp is coated with high reflection shading strip, and the height of adjacent two cold cathode fluorescent lamp reflection shading strip is intervening portion and arranges, and makes the line source that was originally sent by cold cathode fluorescent lamp, has become to be similar to the form of a plurality of pointolites; Moreover stagger more mutually in the position of each pointolite, forms a comparatively uniform netted light source by replenishing mutually between the strong and weak light of adjacent position, also just is similar to an area source.
Description of drawings:
Fig. 1 is the structural representation of existing Staight downward type backlight plate.
Fig. 2 is the ray cast design sketch on the diffuser plate in the existing Staight downward type backlight plate
Fig. 3 is the structural representation of the utility model Staight downward type backlight plate.
Fig. 4 is the B direction view of Fig. 3.
Fig. 5 is the A-A direction cut-open view of cold cathode fluorescent lamp among Fig. 4.
Embodiment:
Shown in Fig. 3-5, they are structural representations of the utility model Staight downward type backlight plate.As shown in the figure: this Staight downward type backlight plate comprises: a framework 1, be layed on framework 1 inner bottom surface and framework 1 inwall on white reflection sheet 2, be set up on framework 1 wall and the cold cathode fluorescent lamp 3 that is arranged parallel to each other and be placed on diffuser plate 6 on above-mentioned cold cathode fluorescent lamp 3 and the framework 1, these cold cathode fluorescent lamp 3 two ends are provided with teleflex 5 and can play fixation;
The upper surface axially spaced-apart of each cold cathode fluorescent lamp 3 is coated with the i.e. coating of the high reflection of spraying, high light-proofness on cold cathode fluorescent lamp 3 of high reflection shading strip 4, its reflecting surface is towards fluorescent tube 3 longitudinal center lines, and the angle [alpha] that this height reflection shading strip 4 covers cold cathode fluorescent lamp 3 upper surfaces is 45 ° of-360 ° of (see figure 5)s; The height reflection shading strip 4 of adjacent two cold cathode fluorescent lamp 3 is intervening portion and arranges.
Select certain spraying width d, then the length L of fluorescent tube 3 be divided into some equal portions with spraying width d, during spraying be coated with a 1d, every a 1d, be coated with a 1d again; Or even be coated with two 2d, every a 1d, be coated with two 2d again; The rest may be inferred.
Such as: fluorescent tube length is 310mm, then can axially be divided into 310 parts to cold cathode fluorescent lamp 3, is coated with wide 1mm, empty 1mm, is coated with 1mm again, with this rule coating.According to circumstances (distance between the length of cold cathode fluorescent lamp 3, the cold cathode fluorescent lamp 3, high reflection shading strip 4 cover the angle [alpha] of cold cathode fluorescent lamp 3 upper surfaces), the axial width of high reflection shading strip 4 should be controlled at 0.5mm-2.0mm.Like this, just can guarantee that it forms a netted light source, the brightness ratio that is incident upon back light on the diffuser plate 6 is more even, and by add diffusion sheet, BEF, diaphragm on diffuser plate 6, effect is better again.
In addition and since in the middle of this cold cathode fluorescent lamp 3 one section brighter and two ends are darker, the high reflection of coating shading strip is to make, coating closeer in the middle of the fluorescent tube and two ends are thinner guaranteed the printing opacity space of the printing opacity space at two ends greater than the centre.
Claims (7)
1, a kind of Staight downward type backlight plate, comprise a framework (1), be layed in the white reflection sheet (2) that reaches on framework (1) inner bottom surface on framework (1) inwall, be set up on framework (1) wall and the cold cathode fluorescent lamp (3) that is arranged parallel to each other and be placed on above-mentioned cold cathode fluorescent lamp (3) and framework (1) on diffuser plate (6), it is characterized in that: the upper surface axially spaced-apart of each cold cathode fluorescent lamp (3) is coated with high reflection shading strip (4), its reflecting surface is towards fluorescent tube (3) longitudinal center line, and the angle that this height reflection shading strip (4) covers cold cathode fluorescent lamp (3) upper surface is 45 °-360 °; The height reflection shading strip (4) of adjacent two cold cathode fluorescent lamp (3) is intervening portion and arranges
2, Staight downward type backlight plate according to claim 1 is characterized in that: the axial width that this cold cathode fluorescent lamp (3) goes up high reflection shading strip (4) is 0.5mm-2.0mm.
3, Staight downward type backlight plate according to claim 1 and 2 is characterized in that: the axial width that this cold cathode fluorescent lamp (3) goes up high reflection shading strip (4) is identical with the axial width that height reflects the printing opacity space between the shading strip (4).
4, Staight downward type backlight plate according to claim 1 and 2 is characterized in that: this cold cathode fluorescent lamp (3) goes up the printing opacity space of the printing opacity space at two ends greater than the centre.
5, Staight downward type backlight plate according to claim 1 and 2 is characterized in that: this cold cathode fluorescent lamp (3) two ends are provided with teleflex (5).
6, Staight downward type backlight plate according to claim 3 is characterized in that: this cold cathode fluorescent lamp (3) two ends are provided with teleflex (5).
7, Staight downward type backlight plate according to claim 4 is characterized in that: this cold cathode fluorescent lamp (3) two ends are provided with teleflex (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230607 CN2650171Y (en) | 2003-04-23 | 2003-04-23 | Direct-down backlight board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03230607 CN2650171Y (en) | 2003-04-23 | 2003-04-23 | Direct-down backlight board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2650171Y true CN2650171Y (en) | 2004-10-20 |
Family
ID=34326127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03230607 Expired - Fee Related CN2650171Y (en) | 2003-04-23 | 2003-04-23 | Direct-down backlight board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2650171Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526693B (en) * | 2008-03-06 | 2010-07-21 | 株式会社日立显示器 | Liquid crystal display device |
| CN102121617A (en) * | 2010-12-22 | 2011-07-13 | 深圳Tcl新技术有限公司 | Light bar structure of LED (light emitting diode) backlight |
| CN101690402B (en) * | 2007-03-16 | 2015-05-20 | 克里公司 | Apparatus and methods for conformable diffuse reflectors for solid state lighting devices |
-
2003
- 2003-04-23 CN CN 03230607 patent/CN2650171Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101690402B (en) * | 2007-03-16 | 2015-05-20 | 克里公司 | Apparatus and methods for conformable diffuse reflectors for solid state lighting devices |
| CN101526693B (en) * | 2008-03-06 | 2010-07-21 | 株式会社日立显示器 | Liquid crystal display device |
| CN102121617A (en) * | 2010-12-22 | 2011-07-13 | 深圳Tcl新技术有限公司 | Light bar structure of LED (light emitting diode) backlight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |