CN1825182A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN1825182A CN1825182A CN 200510008724 CN200510008724A CN1825182A CN 1825182 A CN1825182 A CN 1825182A CN 200510008724 CN200510008724 CN 200510008724 CN 200510008724 A CN200510008724 A CN 200510008724A CN 1825182 A CN1825182 A CN 1825182A
- Authority
- CN
- China
- Prior art keywords
- backlight module
- fixing piece
- base plate
- lamp tube
- fluorescent tube
- 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.)
- Granted
Links
- 238000005452 bending Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- HGAZMNJKRQFZKS-UHFFFAOYSA-N chloroethene;ethenyl acetate Chemical compound ClC=C.CC(=O)OC=C HGAZMNJKRQFZKS-UHFFFAOYSA-N 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
The invention relates to a back light module that at least includes a base board, at least a bend luminous tube, and a luminous tube fixing component, an identity and two ringers. The invention solves the fixing problem and does not cause luminous tube pink effect phenomenon. And the installing speed and working efficiency are improved.
Description
Technical field
The present invention is a kind of backlight module, especially a kind of direct type backlight module that is applied to LCD.
Background technology
Liquid crystal panel (Liquid Crystal Display panel) itself is not luminous, need just be able to display frame by a backlight.Had many kinds of backlight technology now, and in about 20 inches lcd products, often used direct type backlight module, with backlight as liquid crystal panel.The light source of backlight is provided by fluorescent tube, strip, U type or crooked snakelike fluorescent tube is arranged usually, as shown in Figures 1 and 2.
Please refer to Fig. 1, backlight module 10 comprises a base plate 12 and many tubes 14.Because the fluorescent tube caliber is very thin, needs fixture so that fluorescent tube is fixed on the base plate.With the example that is designed to of Fig. 1, because fluorescent tube 14 is strips, so lamp tube fixing piece 16 designs are at the two ends of fluorescent tube 14.Lamp tube fixing piece 16 is a semicircular, shown in the partial enlarged drawing of Fig. 1, so that the installation of fluorescent tube 14.
Except strip fluorescent tube 14 shown in Figure 1, known direct type backlight module also can adopt various difform fluorescent tubes, as U type fluorescent tube or snakelike crooked fluorescent tube, and the U type that is fluorescent tube shown in Figure 2.The benefit of U type fluorescent tube 24 maximums is that the required electrode number that gives fluorescent tube that provides is reduced.Yet the electrode of U type fluorescent tube 24 is at same end, and U type end needs other fixture could keep the stable of fluorescent tube.
The fixture of known U type fluorescent tube 24 generally adopts the design of O shape ring (O-ring) 18, directly coats the part of U type fluorescent tube 24 curved district portions, as shown in Figure 2.Yet,, can quicken U type fluorescent tube 24 when directly being coated on U type fluorescent tube 24 by the heat radiation of covered section because the material of O shape ring 18 is generally rubber.After long-time use a period of time, the portion temperature that is coated can be lower than the portion temperature that does not coat, and cause this part to send the pink phenomenon of low temperature.
So, be head it off, U.S. Patent number the 6th, 722, just 773 design new fixture, shown in Fig. 3 A and Fig. 3 B, Fig. 3 A shows the fixture of U type fluorescent tube and this patent, and Fig. 3 B is the side cross section view (number in the figure 3b is a profile line) of Fig. 3 A.This patent is characterised in that with the design of hook part 162 and reduces contact area with U type fluorescent tube 24, supports and the purpose of fixed lamp tube and reach.Can find out that by Fig. 3 B U type fluorescent tube 24 has only half with contacting of hook part 162, is the gripping shape.Yet,,, fluorescent tube is come off because U type fluorescent tube 24 is less with the contact portion of hook part 162 though this design has solved the pink phenomenon that fluorescent tube produces because of low temperature.Therefore, for reaching best fixed effect, must U type fluorescent tube 24 be fixed on the base plate 12 with staggered pattern as shown in Figure 3A.So not only must increase the number of fixture, also increase the step of assembling simultaneously.
Comprehensive the above, along with the increasing of panel size, the specification of lamp tube fixing piece and require also strictly more, known lamp tube fixing piece obviously is unable to cope with this demand.How to design to have and support and the fixing lamp tube fixing piece of effectiveness, and can not cause the low temperature pink effect of fluorescent tube, real is the problem that industry is eager to overcome.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of backlight module, is to utilize special lamp tube fixing piece, reaches the fixedly fluorescent tube of direct type backlight module to support.
Another object of the present invention is to provide a kind of lamp tube fixing piece simple in structure, so that the assembling of backlight module is more convenient, to enhance productivity.
Backlight module provided by the present invention comprises a base plate at least, at least one bending fluorescent tube, be configured to have at least two parallel parts on this base plate, an and lamp tube fixing piece, has a main body, and two collars are formed at respectively on two arms of this main body, and cover shares this two parallel part, so that this bending fluorescent tube is fixed on this base plate.
Description of drawings
In conjunction with appended icon, can understand the plurality of advantages of foregoing and the present invention by following detailed description easily, wherein:
Fig. 1 shows a typical direct type backlight module stereographic map;
Fig. 2 shows that one has the known direct type backlight module of U type fluorescent tube;
Fig. 3 A shows that another has the known direct type backlight module of U type fluorescent tube;
Fig. 3 B is the side cross section view of Fig. 3 A;
Fig. 4 is a backlight module schematic perspective view of the present invention;
Fig. 5 A is the partial enlarged drawing of Fig. 4;
Fig. 5 B is Fig. 5 A backlight module explosive view; And
Fig. 5 C is another embodiment of the present invention backlight module partial exploded view.
The primary clustering symbol description:
10,20 backlight modules, 12 base plates
14 fluorescent tubes, 16 lamp tube fixing piece
162 hook parts, 18 O type rings
24 U type fluorescent tubes, 40 backlight modules
44 bending fluorescent tubes, 441 parallel portion
443 bends, 52 base plates
523,609 pilot holes, 525 pin holes
527,607 positioning convex column, 60 lamp tube fixing piece
61 reflecting plates, 63 diffuser plates
601 main bodys, 603 collars
605 pin holes, 608 grooves
610 perforation, 90 latches
901 bases, 902 cylinders
903 forks
Embodiment
One embodiment of the invention please refer to Fig. 4, and backlight module 40 comprises a bending fluorescent tube 44, a lamp tube fixing piece 60 and a base plate 52 at least.Bending fluorescent tube 44 has a bend 443 and two parallel portion 441.Lamp tube fixing piece 60 has two parallel portion 441 that two collars 603 are sleeved on bending fluorescent tube 44 respectively.One reflecting plate 61 is arranged between base plate 52 and the bending fluorescent tube 44, to increase the utilization rate of light.And a diffuser plate 63 is arranged on the bending fluorescent tube 44, so that the equalizing light rays that backlight module 40 is provided.
With reference to 5A figure and 5B figure, lamp tube fixing piece 60 has a main body 601, and its two arm connects two collars 603.The width of the collar 603 below 0.3 centimeter, just can not make bending fluorescent tube 44 because of contact heat radiation produce pink phenomenon through experiment showed, under this width about.In order further to reduce the contact area of bending fluorescent tube 44 and main body 601, two arms of main body 601 can be designed to groove 608 (being shown in Fig. 5 B) or 610 (being shown in Fig. 5 C) of boring a hole under the position of the collar 603.And the material of lamp tube fixing piece 44, the especially collar 603 parts can select for use the low material of heat-conduction coefficient as poly-carbon resin (PC), high reflected P C plastics, PE tygon, PP polypropylene, PVC Polyvinylchloride.Thus, then can further avoid pink effect effectively.
The main body 601 of lamp tube fixing piece 60 is to be fixed on the base plate 52 by a latch 90.Its main body 601 has a pin hole 605, and base plate 52 has a corresponding pin hole 525.Latch 90 comprises a base 901, a cylinder 902 and a fork 903.Lamp tube fixing piece 60 is fixed on the base plate 52 in conjunction with pin hole 525,605 by latch 90.
In the enforcement, the shape of pin hole 605 can be done different designs with the fork collocation.During assembling, treat that fork 903 is by pin hole 605 and when being positioned on the main body 601, can be by base plate 52 below rotating bases 901, make latch 90 and main body 601 fasten by this, shown in Fig. 5 A, fork 903 just can't make that by this lamp tube fixing piece 60 is incorporated into base plate 52 once more by the pin hole 605 below it after the rotation.
In another embodiment, fork 903 can utilize the flexible material making of tool slightly, and be designed to by the pin hole 525 on pin hole on the main body 605 or the base plate time force-applied and in the shape that contracts, and the aperture design of the pin hole 605 on the main body becomes to be slightly smaller than the major axis of fork 903.Shown in Fig. 5 B, two parts about fork 903 is designed to, modification can contract in the gap in the middle of it when stressed, by this by the pin hole 605 on pin hole on the base plate 525 and the main body, and restoring to the original state because of elastic reaction by 605 backs of the pin hole on the main body, therefore can't be once more by the pin hole on pin hole on the base plate 525 and the main body 605, and make lamp tube fixing piece 60 be incorporated on the base plate 52.
Please continue the explosive view with reference to figure 5B, in an embodiment of the present invention, lamp tube fixing piece 60 more comprises at least one positioning convex column 607, extends the below of autonomous agent 601.With the embodiment shown in Fig. 5 B explanation, two positioning convex column 607 lower surface of autonomous agent 601 2 ends are respectively extended downwards.And base plate 52 has at least one corresponding positioning hole 523, by combining of positioning convex column 607 and pilot hole 523, then lamp tube fixing piece 60 can be positioned on the base plate 52.Thus, not only when a plurality of bending fluorescent tubes 44 are assembled in backlight module 40, can make those bending fluorescent tubes 44 accurately be set on the preposition, and the setting of positioning convex column 607 and pilot hole 523, can make pin hole 605 promptly align, to promote assembling speed with corresponding pin hole 525.
In another embodiment, the position of pilot hole and positioning convex column is also commutative.Please refer to Fig. 5 C, the main body 601 of lamp tube fixing piece 60 comprises at least one pilot hole 609, and base plate 52 has at least one positioning convex column 527, by combining of positioning convex column 527 and pilot hole 609, lamp tube fixing piece 60 just can be positioned on the base plate 52 fast, so that promote assembling speed.
With Fig. 5 A and Fig. 5 B is that example illustrates that backlight module 40 provided by the present invention can assemble according to the following step:
At first, two parallel portion 441 of two collars 603 of a lamp tube fixing piece 60 being inserted in a bending fluorescent tube 44 respectively see also Fig. 4 with fixing, and two collars are inserted in two parallel portion 441 from the other end of the bend 443 of bending fluorescent tube 44.
Secondly, then above-mentioned bending fluorescent tube 44 and lamp tube fixing piece 60 are arranged on the base plate 52, the main body 601 of lamp tube fixing piece 60 places on the base plate 52.
Then, lamp tube fixing piece 60 is positioned a precalculated position on the base plate 52, can utilizes pilot hole 523 shown in Fig. 5 B and the pilot hole 609 shown in positioning convex column 607 or Fig. 5 C to position in the enforcement with positioning convex column 527.By this, bending fluorescent tube 44 also can be accurately positioned.
At last, then lamp tube fixing piece 60 can be combined with 52 base plates.It can be incorporated into latch 90 pin hole 605 of main body 601 of lamp tube fixing piece 60 and the pin hole 525 of base plate 52, to reach the purpose of combination.
Comprehensively the above the invention solves known lamp tube fixing piece and can't solve the problem that supports and fix simultaneously under the situation that does not cause the pink effect of fluorescent tube.And the present invention has considered assembling and the thin portion flow process of producing, and therefore backlight module provided by the present invention has the production efficiency higher than known technology.
Though the present invention illustrates as above with preferred embodiments, yet it is not only to terminate in the foregoing description in order to limit the present invention's spirit with the invention entity.To being familiar with the people of this technology, when understanding and utilize other assembly or mode to produce identical effect easily.Therefore, the modification of being done in not breaking away from spirit of the present invention and scope all should be included in the claim.
Claims (8)
1. backlight module is characterized in that comprising at least:
One base plate;
At least one bending fluorescent tube is configured to have at least two parallel parts on this base plate;
At least one lamp tube fixing piece has a main body, and two collars are formed at respectively on two arms of this main body, and fit lives in to state two parallel parts, so that this bending fluorescent tube is fixed on this base plate;
One diffuser plate is arranged on this at least one bending fluorescent tube; And
One reflecting plate is arranged between this base plate and this at least one bending fluorescent tube.
2. backlight module as claimed in claim 1 is characterized in that the main body of wherein above-mentioned lamp tube fixing piece has a pin hole, and above-mentioned base plate has a corresponding pin hole.
3. backlight module as claimed in claim 2 is characterized in that more comprising:
One latch is to link above-mentioned lamp tube fixing piece and above-mentioned base plate.
4. backlight module as claimed in claim 1 is characterized in that, there is a location projection main body below of wherein above-mentioned lamp tube fixing piece, and above-mentioned base plate has a corresponding positioning hole.
5. backlight module as claimed in claim 1 is characterized in that, two arms of the main body of wherein above-mentioned lamp tube fixing piece have two grooves respectively.
6. backlight module as claimed in claim 1 is characterized in that, two arms of the main body of wherein above-mentioned lamp tube fixing piece have two perforation respectively.
7. backlight module as claimed in claim 1 is characterized in that, wherein the material of this lamp tube fixing piece is selected the low material of heat-conduction coefficient for use.
8. backlight module as claimed in claim 7 is characterized in that, the material that wherein above-mentioned heat-conduction coefficient is low comprises poly-carbon resin, high reflected P C plastics, PE tygon, PP polypropylene, reaches the PVC Polyvinylchloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100087241A CN100414381C (en) | 2005-02-24 | 2005-02-24 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100087241A CN100414381C (en) | 2005-02-24 | 2005-02-24 | Backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1825182A true CN1825182A (en) | 2006-08-30 |
| CN100414381C CN100414381C (en) | 2008-08-27 |
Family
ID=36935925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100087241A Expired - Fee Related CN100414381C (en) | 2005-02-24 | 2005-02-24 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100414381C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725927B (en) * | 2008-10-14 | 2013-01-16 | 华映视讯（吴江）有限公司 | Back light module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776249B (en) * | 2010-01-18 | 2012-02-01 | 友达光电（苏州）有限公司 | Supporting mechanism and back light device using same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI246574B (en) * | 2002-07-22 | 2006-01-01 | Chi Mei Optoelectronics Corp | Illuminating device and tube-like lamp thereof |
| KR100525440B1 (en) * | 2002-12-31 | 2005-11-02 | 엘지.필립스 엘시디 주식회사 | Back light unit |
| JP3653273B2 (en) * | 2004-06-29 | 2005-05-25 | シャープ株式会社 | Lamp holder, backlight device and liquid crystal display device |
-
2005
- 2005-02-24 CN CNB2005100087241A patent/CN100414381C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725927B (en) * | 2008-10-14 | 2013-01-16 | 华映视讯（吴江）有限公司 | Back light module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100414381C (en) | 2008-08-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20080827 |