CN101109868A - Directly-down backlight component - Google Patents

Directly-down backlight component Download PDF

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Publication number
CN101109868A
CN101109868A CNA2006101085661A CN200610108566A CN101109868A CN 101109868 A CN101109868 A CN 101109868A CN A2006101085661 A CNA2006101085661 A CN A2006101085661A CN 200610108566 A CN200610108566 A CN 200610108566A CN 101109868 A CN101109868 A CN 101109868A
Authority
CN
China
Prior art keywords
backlight assembly
fluorescent tube
type backlight
direct type
perforate
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.)
Pending
Application number
CNA2006101085661A
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Chinese (zh)
Inventor
欧阳弘毅
林文郁
陈嘉鸿
洪文琦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chunghwa Picture Tubes Ltd
Original Assignee
Chunghwa Picture Tubes Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chunghwa Picture Tubes Ltd filed Critical Chunghwa Picture Tubes Ltd
Priority to CNA2006101085661A priority Critical patent/CN101109868A/en
Publication of CN101109868A publication Critical patent/CN101109868A/en
Pending legal-status Critical Current

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  • Planar Illumination Modules (AREA)

Abstract

The invention discloses a direct downward backlight assembly comprising a frame, at least a lamp tube support, at least a lamp tube and an spreading board. The frame has a base board, on which at least one hole is provided, and the lamp tube support is clamped in the opening. The lamp tube support comprise a base and at least one support fastener. The base is located outside the frame and the support fastener is located on the base and passes the hole. The support fastener has a lamp tube chuck and a clamping part. The clamping part clamps in the hole, and the lamp tube chuck is for clamping the lamp tube. The spreading board is located above the lamp tube. In this way, the direct downward backlight assembly is furnished with steady quality and good assembling efficiency.

Description

Direct type backlight assembly
Technical field
The present invention is relevant for a kind of light source assembly, and is particularly to a kind of direct type backlight assembly.
Background technology
Along with the modern video development of technology, liquid crystal indicator has been used on the display screen of consumption electronic products such as LCD TV, mobile phone, notebook computer, PC and personal digital assistant in large quantities.Yet, because the display panels of liquid crystal indicator itself does not have luminous function, therefore need be in the back side of display panels configuration backlight assembly providing display panels needed area source, and then make display panels reach the effect of demonstration.
Figure 1A is the three-dimensional exploded view of existing a kind of direct type backlight assembly, and Figure 1B is the part sectioned view of Figure 1A direct type backlight assembly.Please refer to Figure 1A and Figure 1B, existing direct type backlight assembly 100 comprises a framework (Frame) 110, a plurality of cathode fluorescent tube (Cold Cathode Fluorescent Lamp, CCFL) 120, one diffuser plate (Diffusion Plate) 130 and a plurality of lamp tube supporting structure 140.These cathode fluorescent tubes 120 are to be disposed in the framework 110, and diffuser plate 130 is the tops that are disposed at cathode fluorescent tube 120, and wherein diffuser plate 130 is to be used for the light that homogenising cathode fluorescent tube 120 is sent, so that uniform surface light source to be provided.
When the size of direct type backlight assembly 100 increased, the length of cathode fluorescent tube 120 also can increase thereupon.So, direct type backlight assembly 100 causes the situation of cathode fluorescent tube 120 fractures easily because of vibration when carrying.Therefore direct type backlight assembly 100 generally can additionally be provided with lamp tube supporting structure 140, in order to clamping cathode fluorescent tube 120, with further fixedly cathode fluorescent tube 120, prevents the situation that it ruptures because of vibration.
Refer again to Figure 1A and Figure 1B, framework 110 has a base plate 112, and is provided with a plurality of perforates 114 of corresponding lamp tube supporting structure 140 at base plate 112, and lamp tube supporting structure 140 is on the configuration base plate 112.Lamp tube supporting structure 140 comprises a base 142 (base), 144 and two trips of two fluorescent tube chuck spares (lamp holder) (locking hook) 146, and wherein fluorescent tube chuck spare 144 is the upper and lower surfaces that are disposed at base 142 respectively with trip 146.Trip 146 is to be arranged in the perforate 114 so that lamp tube supporting structure 140 is fixed on the base plate 112, and fluorescent tube chuck spare 144 is in order to clamping cathode fluorescent tube 120.
Yet, owing to trip 146 is to pass the outside that perforate 114 protrudes from base plate 112, thus when direct type backlight assembly 100 with other members in when assembling, trip 146 is subjected to the collision of other members easily and produces structural interference.So, trip 146 is got loose from perforate 114 and make lamp tube supporting structure 140 separate, thereby cause cathode fluorescent tube 120 to damage with base plate 112.
Fig. 2 A is the part sectioned view of existing another kind of direct type backlight assembly, and Fig. 2 B is the supporting construction of Fig. 2 A and the exploded perspective view of base plate, and wherein the view directions of base plate is by the direction of plate outer side toward the base plate inboard.Please refer to Fig. 2 A and Fig. 2 B, existing direct type backlight assembly 200 comprises a framework 210, a plurality of cathode fluorescent tube 220, a diffuser plate 230 and a plurality of lamp tube supporting structure 240 (only illustrating among the figure).Framework 210 has a base plate 212, and lamp tube supporting structure 240 is to be disposed on the base plate 212, and supports cathode fluorescent tube 220 in order to clamping, and diffuser plate 230 is the tops that are disposed at cathode fluorescent tube 220.
Particularly, lamp tube supporting structure 240 comprises a base 242, two fluorescent tube chuck spares 244 and a plate 246, and wherein the two ends of web joint 246 have a projection (protrusion) 248 respectively.Corresponding, be provided with the perforate 214 of corresponding web joint 246 shapes at base plate 212, and the groove (concavity) 216 of respective protrusions 248 shapes is arranged in base plate 212 arranged outside.When assembling, be that first web joint 246 with lamp tube supporting structure 240 passes after the perforate 214, horizontally rotate lamp tube supporting structure 240, projection 248 is placed in the groove 216.Whereby so that lamp tube supporting structure 240 is fixed on the base plate 212, then fluorescent tube chuck spare 244 can clamping and fixing cathode fluorescent tube 220.
Yet, because in the above-mentioned number of assembling steps, lamp tube supporting structure 240 must be rotated to the location after, lamp tube supporting structure 240 beginning can be fixed on the base plate 212, and then the effect that supports of performance.So must be during assembling with base plate 212 turn-overs, with the upright situation of the group of confirming lamp tube supporting structure 240 from base plate 212 outsides.So can expend many man-hours and make the packaging efficiency of direct type backlight assembly 200 descend.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of direct type backlight assembly, it has firm lamp tube supporting structure with support luminous tube.
In addition, another object of the present invention provides a kind of direct type backlight assembly, and it has preferable packaging efficiency.
For reaching above-mentioned or other purposes, the present invention proposes a kind of direct type backlight assembly, comprises a framework, at least one lamp tube supporting structure, at least one fluorescent tube and a diffuser plate.Framework has a base plate, and is provided with at least one perforate at base plate, and lamp tube supporting structure is to be arranged in perforate.Lamp tube supporting structure comprises a base and at least one support fixation part (holding and fixing member), and wherein base is to be disposed at outside the base plate of framework, and the support fixation part is to be disposed on the base, and passes perforate.The support fixation part has a fluorescent tube chuck portion (lampholding portion) and a holding section (fixing portion), and wherein the holding section is to be arranged in perforate, and fluorescent tube chuck portion is suitable for the clamping fluorescent tube, and diffuser plate is to be disposed at the fluorescent tube top.
In an embodiment of the present invention, the material of above-mentioned support fixation part can be plastic cement or transparent material.In addition, above-mentioned support fixation part is not exposed to outside the base plate.
The present invention proposes a kind of direct type backlight assembly in addition, comprises a framework, at least one lamp tube supporting structure, at least one fluorescent tube and a diffuser plate.Framework has a base plate, and is provided with at least one groups of openings at base plate, and lamp tube supporting structure is to run through groups of openings and be arranged in groups of openings, and wherein groups of openings comprises one first perforate and one second perforate.Lamp tube supporting structure comprises a base, at least one fastener and at least one fluorescent tube chuck spare, and wherein fastener and fluorescent tube chuck spare are the homonymies that is disposed at base.Base is to be disposed at outside the base plate of framework, and fastener is to pass first perforate and be arranged in first perforate, and fluorescent tube chuck spare is to pass second perforate.In addition, fluorescent tube is by the clamping of fluorescent tube chuck portion, and diffuser plate is to be disposed on the fluorescent tube.
In an embodiment of the present invention, the material of above-mentioned fastener can be plastic cement or transparent material.In addition, above-mentioned fastener is not exposed to outside the base plate.
In an embodiment of the present invention, the material of above-mentioned fluorescent tube chuck spare can be plastic cement or transparent material.
In an embodiment of the present invention, above-mentioned lamp tube supporting structure can be one of the forming.
In an embodiment of the present invention, above-mentioned fastener can be a trip (locking hook), a button pawl (fastening claw) or a curved pawl (curvy claw).
In an embodiment of the present invention, direct type backlight assembly also comprises an optical diaphragm group, be disposed on the diffuser plate, and this diffuser plate is between optical diaphragm group and fluorescent tube.
In sum, in direct type backlight assembly of the present invention, because the equipping position of support fixation part (or fastener) is to be arranged in framework, so support fixation part (or fastener) is not vulnerable to the influence of external member and gets loose.So, direct type backlight assembly can be kept stable quality.In addition, lamp tube supporting structure can be directly passes perforate (or groups of openings) being assembled on the base plate by the outside of base plate, the easy and packaging efficiency of the direct type backlight assembly that is increased of number of assembling steps.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Figure 1A is the three-dimensional exploded view of existing a kind of direct type backlight assembly.
Figure 1B is the part sectioned view of Figure 1A direct type backlight assembly.
Fig. 2 A is the part sectioned view of existing another kind of direct type backlight assembly.
Fig. 2 B is the exploded perspective view of Fig. 2 A supporting construction and base plate.
Fig. 3 A is the three-dimensional exploded view according to the direct type backlight assembly of first embodiment of the invention.
Fig. 3 B is the part sectioned view after the combination of Fig. 3 A direct type backlight assembly.
Fig. 3 C is the exploded perspective view of Fig. 3 B supporting construction and base plate.
Fig. 4 A is the three-dimensional exploded view according to the direct type backlight assembly of second embodiment of the invention.
Fig. 4 B is the part sectioned view after the combination of Fig. 4 A direct type backlight assembly.
Fig. 4 C is the exploded perspective view of Fig. 4 B supporting construction and base plate.
Embodiment
First embodiment
Fig. 3 A is the three-dimensional exploded view according to the direct type backlight assembly of first embodiment of the invention; And Fig. 3 B is the part sectioned view after the combination of Fig. 3 A direct type backlight assembly; And Fig. 3 C is the supporting construction of Fig. 3 B and the three-dimensional exploded view of base plate.Please also refer to Fig. 3 A, Fig. 3 B and 3C, direct type backlight assembly 300 of the present invention comprises a framework 310, at least one lamp tube supporting structure 320 (a plurality of shown in the figure), at least one fluorescent tube 330 (a plurality of shown in the figure) and a diffuser plate 340.Framework 310 has a base plate 312, and is provided with at least one perforate 314 at base plate 312, and lamp tube supporting structure 320 is to be arranged in perforate 314.
Accept above-mentioned, lamp tube supporting structure 320 comprises a base 322 and at least one support fixation part 324 (shown in the figure two), wherein base 322 is to be disposed at outside the base plate 312 of framework 310, and support fixation part 324 is to be disposed on the base 322, and passes perforate 314.Particularly, support fixation part 324 has a fluorescent tube chuck 324a of portion and a holding section 324b, and wherein holding section 324b is arranged in perforate 314, and the fluorescent tube chuck 324a of portion is suitable for clamping fluorescent tube 330.In addition, and diffuser plate 340 be to be disposed at fluorescent tube 330 tops.
Owing to support fixation part 324 is to pass perforate 314 to be disposed in the framework 310, so the holding section 324b of support fixation part 324 is not exposed to base plate 312 outsides, so holding section 324b is not vulnerable to the influence of external member and gets loose.In other words, the member that the present invention is exposed to base plate 312 outsides is smooth base 322, and only pipe is when base 322 is subjected to the collision of external member, and base 322 is difficult for producing structural interference and lamp tube supporting structure 320 is separated with base plate 312.
In the present embodiment, fluorescent tube 330 for example is a cathode fluorescent tube, and it is suitable for providing light to diffuser plate 340, and diffuser plate 340 is suitable for light is converted into uniform surface light source.In addition, lamp tube supporting structure 320 for example is the structure that is one of the forming with injection molding, but the present invention does not limit the production method of supporting construction 320.In addition, support fixation part 324 can be plastic cement with the material of base 322, and certainly, for further promoting the optics utilization factor of direct type backlight assembly 300, the material of support fixation part 324 also can be transparent material, and the material of base 322 also can be the highly reflective material.
Refer again to Fig. 3 B and 3C, the mode that the present invention assembles lamp tube supporting structure 320 is directly to pass perforate 314 in the lateral of support fixation part 324 by base plate 312 with supporting construction 320.After support fixation part 324 passed perforate 314, holding section 324b promptly can be snapped in perforate 314 so that supporting construction 320 is fixed on the base plate 312.So (shown in Fig. 2 B) must be with the assembling mode of positioning of rotating compared to existing lamp tube supporting structure 240, the assembling mode of lamp tube supporting structure 320 of the present invention is comparatively easy.In addition, in the present embodiment, holding section 324b for example is a trip.But, the present invention does not limit the kind form of holding section 324b, and for example, holding section 324b also can be button pawl, curved pawl or other suitable fastened components.
Refer again to Fig. 3 A, for further promoting the optical quality of direct type backlight assembly 300, direct type backlight assembly 300 also can comprise an optical diaphragm group 350, it is disposed on the diffuser plate 340, and diffuser plate 340 is between optical diaphragm group 350 and light source, wherein optical diaphragm group 350 can comprise diffusion sheet, brightening piece and prismatic lens at least one of them, with the uniformity coefficient of further lifting area source, and make area source convergence to reach brightening effect.It should be noted that in the present embodiment lamp tube supporting structure 320 has two support fixation parts 324, but the present invention does not limit the quantity of support fixation part 324 in any lamp tube supporting structure 320.In addition, it is two members that the present invention also can disassemble support fixation part 324 according to difference in functionality again, below will illustrate for embodiment and collocation in addition again.
Second embodiment
Fig. 4 A is the three-dimensional exploded view according to the second embodiment of the invention direct type backlight assembly; And Fig. 4 B is the part sectioned view after the combination of Fig. 4 A direct type backlight assembly; And Fig. 4 C is the exploded perspective view of Fig. 4 B supporting construction and base plate.Please also refer to Fig. 4 A, Fig. 4 B and Fig. 4 C, the direct type backlight assembly 400 of present embodiment is similar to the direct type backlight assembly 300 (as shown in Figure 3A) of first embodiment, its difference is that the lamp tube supporting structure 420 of direct type backlight assembly 400 comprises a base 422, at least one fastener 424 and at least one fluorescent tube chuck spare 426 (shown in the figure two), and wherein fastener 424 is to be disposed on the same side of base 422 with fluorescent tube chuck spare 426.Corresponding base plate 412 is provided with at least one groups of openings 414, and wherein groups of openings 414 comprises one first perforate 414a of corresponding fastener 424 and one second perforate 414b of corresponding fluorescent tube chuck spare 426 (shown in the figure two).
Accept above-mentionedly, lamp tube supporting structure 420 is to run through groups of openings 414 and be arranged in groups of openings 414.Particularly, base 422 is to be disposed at base plate 412 outsides, and fastener 424 is to pass the first perforate 414a and be arranged in the first perforate 414a, and fluorescent tube chuck spare 426 is to pass the second perforate 414b and be suitable for clamping fluorescent tube 330.Owing to fastener 424 is to pass the first perforate 414a to be disposed in the framework 310, so fastener 424 is not exposed to base plate 412 outsides, so fastener 424 is not vulnerable to the influence of external member and gets loose.
In addition, the mode of assembling lamp tube supporting structure 420 is that direct fastener 424 with supporting construction 420 inwardly passes the first perforate 414a and the second perforate 414b with fluorescent tube chuck spare 426 respectively by the outside of base plate 412.After passing the first perforate 414a, fastener 424 promptly can be snapped in the first perforate 414a, so lamp tube supporting structure of the present invention 420 has comparatively easy assembling mode so that supporting construction 420 is fixed on the base plate 412.
In the present embodiment, fastener 424 for example is plastic cement or transparent material with the material of fluorescent tube chuck spare 426, and fastener 424 for example is trip, button pawl or curved pawl.Subsidiary one what carry is that the lamp tube supporting structure 420 of only managing present embodiment is with two fluorescent tube chuck spares 426 of a fastener 424 collocation, but the present invention does not limit the quantity of fastener 424 and fluorescent tube chuck spare 426.For example, fluorescent tube chuck spare of also configurable two fasteners collocation of lamp tube supporting structure is fixed in intensity on the base plate to increase lamp tube supporting structure, certainly, and the adjustment of also must arranging in pairs or groups of the first corresponding perforate and the quantity of second perforate.
In sum, direct type backlight assembly of the present invention has following advantage at least:
One, owing to support fixation part (or fastener) is to pass perforate (or first perforate) to be disposed in the framework, so the holding section of support fixation part (or fastener) be not exposed to plate outer side, and be not vulnerable to the collision influence of external member and get loose.So, direct type backlight assembly can be kept stable quality.
Two, lamp tube supporting structure can be directly passes perforate (or groups of openings) being assembled on the base plate by the outside of base plate, the easy and packaging efficiency of the direct type backlight assembly that is increased of number of assembling steps.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those of ordinary skills, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when with being as the criterion that claim was defined.

Claims (13)

1. direct type backlight assembly comprises:
One framework has a base plate, and is provided with at least one perforate at this base plate;
At least one lamp tube supporting structure is arranged in this perforate, and this lamp tube supporting structure comprises:
One base is disposed at outside this base plate of this framework;
At least one support fixation part is disposed on this base, and passes this perforate, and this support fixation part has a fluorescent tube chuck portion and a holding section, and this holding section is arranged in this perforate;
At least one fluorescent tube, this fluorescent tube is by this fluorescent tube chuck portion clamping; And
One diffuser plate is disposed at this fluorescent tube top.
2. direct type backlight assembly as claimed in claim 1 is characterized in that, the material of this support fixation part is plastic cement or transparent material.
3. direct type backlight assembly as claimed in claim 1 is characterized in that this lamp tube supporting structure is one of the forming.
4. direct type backlight assembly as claimed in claim 1 is characterized in that, this holding section is a trip, a button pawl or a curved pawl.
5. direct type backlight assembly as claimed in claim 1 is characterized in that, also comprises an optical diaphragm group, be disposed on this diffuser plate, and this diffuser plate is between this optical diaphragm group and this fluorescent tube.
6. direct type backlight assembly as claimed in claim 1 is characterized in that, this support fixation part is not exposed to outside this base plate.
7. direct type backlight assembly comprises:
One framework has a base plate, and is provided with at least one groups of openings at this base plate, and this groups of openings comprises one first perforate and one second perforate;
At least one lamp tube supporting structure runs through this groups of openings and is arranged in this groups of openings, and this lamp tube supporting structure comprises:
One base is disposed at outside this base plate of this framework;
At least one fastener be disposed on this base, and this fastener is to pass this first perforate and be arranged in this first perforate;
At least one fluorescent tube chuck spare is disposed on this base, and passes this second perforate;
At least one fluorescent tube, this fluorescent tube can be by this fluorescent tube chuck spare clamping; And
One diffuser plate is disposed at this fluorescent tube top.
8. direct type backlight assembly as claimed in claim 7 is characterized in that, the material of this fastener is plastic cement or transparent material.
9. direct type backlight assembly as claimed in claim 7 is characterized in that, the material of this fluorescent tube chuck spare is plastic cement or transparent material.
10. direct type backlight assembly as claimed in claim 7 is characterized in that this lamp tube supporting structure is one of the forming.
11. direct type backlight assembly as claimed in claim 7 is characterized in that, this fastener is a trip, a button pawl or a curved pawl.
12. direct type backlight assembly as claimed in claim 7 is characterized in that, also comprises an optical diaphragm group, be disposed on this diffuser plate, and this diffuser plate is between this optical diaphragm group and this fluorescent tube.
13. direct type backlight assembly as claimed in claim 7 is characterized in that, this fastener is not exposed to outside this base plate.
CNA2006101085661A 2006-07-21 2006-07-21 Directly-down backlight component Pending CN101109868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2006101085661A CN101109868A (en) 2006-07-21 2006-07-21 Directly-down backlight component

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Application Number Priority Date Filing Date Title
CNA2006101085661A CN101109868A (en) 2006-07-21 2006-07-21 Directly-down backlight component

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CN101109868A true CN101109868A (en) 2008-01-23

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101241266B (en) * 2008-03-19 2010-10-13 友达光电股份有限公司 Backlight module and its lamp tube supporting structure
US7922379B2 (en) 2008-07-03 2011-04-12 Au Optronics Corporation Backlight module
CN101307874B (en) * 2008-07-14 2011-05-04 友达光电股份有限公司 Backlight module
CN102216680A (en) * 2008-11-28 2011-10-12 夏普株式会社 Illuminating device, display device and television receiver
CN102227588A (en) * 2008-12-18 2011-10-26 夏普株式会社 Illumination device, display device, and television reception device
CN102257313A (en) * 2008-12-18 2011-11-23 夏普株式会社 Lighting device, display device, and television receiving device
CN102734762A (en) * 2012-06-29 2012-10-17 南京中电熊猫液晶显示科技有限公司 Fixing device and direct type backlight module with same
CN101725927B (en) * 2008-10-14 2013-01-16 华映视讯(吴江)有限公司 Back light module

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101241266B (en) * 2008-03-19 2010-10-13 友达光电股份有限公司 Backlight module and its lamp tube supporting structure
US7922379B2 (en) 2008-07-03 2011-04-12 Au Optronics Corporation Backlight module
CN101307874B (en) * 2008-07-14 2011-05-04 友达光电股份有限公司 Backlight module
CN101725927B (en) * 2008-10-14 2013-01-16 华映视讯(吴江)有限公司 Back light module
CN102216680A (en) * 2008-11-28 2011-10-12 夏普株式会社 Illuminating device, display device and television receiver
CN102227588A (en) * 2008-12-18 2011-10-26 夏普株式会社 Illumination device, display device, and television reception device
CN102257313A (en) * 2008-12-18 2011-11-23 夏普株式会社 Lighting device, display device, and television receiving device
CN102734762A (en) * 2012-06-29 2012-10-17 南京中电熊猫液晶显示科技有限公司 Fixing device and direct type backlight module with same

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Open date: 20080123