CN101241266B

CN101241266B - Backlight module and its lamp tube supporting structure

Info

Publication number: CN101241266B
Application number: CN2008100827856A
Authority: CN
Inventors: 陈志嘉
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2008-03-19
Filing date: 2008-03-19
Publication date: 2010-10-13
Anticipated expiration: 2028-03-19
Also published as: CN101241266A

Abstract

The invention discloses a backlight module and a tube supporting frame thereof. The backlight module comprises a back plate and at least one light tube. The back plate is provided with an integral rigid configuration and comprises a bottom plate and at least one supporting frame. The supporting frame is made by bending the bottom plate and is perpendicular to the bottom plate substantially. The light tube is disposed on the bottom plate and is clamped fixedly by the supporting frame. A cushion member is disposed between the supporting frame and the light tube and is provided with a vibration absorption effect to absorb vibration between the supporting frame and the light tube and avoid noise generation.

Description

Backlight module and lamp tube supporting structure thereof

Technical field

The present invention relates to a kind of backlight module and lamp tube supporting structure thereof.

Background technology

Backlight module (Back light unit) is LCD (Liquid Crystal Display, one of key components and parts LCD).Because liquid crystal itself is not luminous, the function of backlight module promptly is well-off brightness and the light source that is evenly distributed, and makes its normally show image.LCD now has been widely used in the electronic product of tool growth potentiality such as monitor, mobile computer, digital camera and projector, and the demand that therefore drives backlight module and related components thereof continues to grow up.

With reference to Fig. 1, the fluorescent tube 14 in the traditional backlight module 10 is fixed in supporting seat 13 on the backboard (Backbezel) 11.Supporting seat 13 is strip structure, and in a determining deviation bracing frame 12 is set.The longitudinal extension direction of supporting seat 13 becomes vertical approximately with the longitudinal extension direction of fluorescent tube 14.Show among Fig. 1 and four bracing frames 12 are set altogether to support to fix four tubes 14.Bracing frame 12 is c-shaped, in order to around gripping these fluorescent tubes 14.

Backboard 11 is generally made by stainless steel or aluminium alloy, and bracing frame is made by working of plastics more than 12.Because of fluorescent tube 14 belongs to hard structure, make the size of bracing frame 12 to produce variation because of making or using for a long time, therefore can influence the adaptation of 12 of fluorescent tube 14 and bracing frames to a certain extent.If the adaptation that fluorescent tube 14 and bracing frame are 12 is not good, then can produces different sound because of vibration easily, and then influence user's impression.

Supporting seat 13 and backboard 11 are to adhere to different objects separately, even are made by unlike material, and its production and material keyholed back plate are comparatively complicated, relatively must the higher production cost of expenditure.

Summary of the invention

For addressing the above problem, the invention provides a kind of backlight module and lamp tube supporting structure thereof, improve, can reduce the cost of extra making holding frame for luminous tube at backboard, and can solve vibration problem between bracing frame and fluorescent tube, thereby avoid the noise that produces because of vibration.

The present invention discloses a kind of backlight module and lamp tube supporting structure thereof, and this kind backlight module comprises backboard and at least one fluorescent tube, and wherein this backboard is integrated rigid structure, and it comprises a base plate and at least one bracing frame.Aforementioned bracing frame is formed by this base plate bending, and is vertical with this base plate in fact; This fluorescent tube is arranged on this base plate, is gripped by this bracing frame, and is provided with bolster between this bracing frame and the fluorescent tube, and its tool shock attenuation result can absorb the vibration between bracing frame and fluorescent tube, avoids noise to produce.

Description of drawings

Fig. 1 is the synoptic diagram of existing backlight module;

Fig. 2 is the synoptic diagram of backlight module of the present invention;

Fig. 3 is the enlarged diagram of the bracing frame of backlight module of the present invention;

Fig. 4 is the cut-open view of Fig. 3 along the 1-1 profile line;

Fig. 5 is the synoptic diagram of the backboard of backlight module of the present invention.

Wherein Reference numeral is:

10 backlight modules, 11 base plates

12 bracing frames, 13 supporting seats

14 fluorescent tubes, 20 backlight modules

21 backboards, 22 base plates

23 bracing frames, 24 fluorescent tubes

25 ring arms, 26 bolsters

27 support columns, 31 breach

32 openings, 33 raceway grooves

34 block openings

Embodiment

Below describe conjunction with figs. the technical characterictic of backlight module of the present invention and lamp tube supporting structure thereof in detail.

Fig. 2 is the partial schematic diagram of an embodiment of backlight module of the present invention.As shown in Figure 2, backlight module 20 comprises backboard 21 and fluorescent tube 24.Fluorescent tube 24 is set in parallel in the surface of backboard 24 according to parameters such as its brightness with appropriate intervals.Backboard 21 comprises base plate 22 and a plurality of bracing frame 23, and wherein the location interval of bracing frame 23 collocation fluorescent tubes 24 is provided with in regular turn.According to one embodiment of the invention, backboard 21 can be made of metal, for example stainless steel and aluminium alloy etc.

Fig. 3 is about the enlarged diagram of bracing frame 23 parts among Fig. 2.Bracing frame 23 is the C shape structure that opening makes progress approximately, and it comprises two ring arms 25, extends to form one around structure.The size of the breach 31 that two ring arms are 25 is slightly larger than the diameter of fluorescent tube 24, so that fluorescent tube 24 is placed in the bracing frame 23.

In another embodiment, 24 of bracing frame 23 and fluorescent tubes are provided with C shape bolster 26 in addition, around clamping fluorescent tube 14.Bolster 26 has an opening 32 up, and its bore is less than the diameter of fluorescent tube 24, in order to preferable covered effect to be provided.In preferred embodiment, as shown in Figure 3, the width W 1 of bolster 26 is greater than the width W 2 of ring arm 25, with firm support and clamping fluorescent tube 24; Yet, in practical application, as long as can be firmly with fluorescent tube, the present invention need not limit bolster 26 width must greater than the ring arm 25 width.Bolster 26 can utilize as softwood matter such as rubber and make, and it can comply with bracing frame 23 and fluorescent tube 24 is made corresponding deformation, makes its size that can remedy each bracing frame 23 because of making or use the variation that produces.In addition, bolster 26 tool shock attenuation results can effectively improve the oscillation phenomenon of 24 of the bracing frame 23 that is rigid object and fluorescent tubes, avoid noise to produce.

In another embodiment, as shown in Figure 3, bracing frame 23 can be by cutting out respective block in the base plate 22 and being bent to form.After this block bending, it promptly forms block opening 34 in base plate 22 corresponding positions.For example, at first stamp out raceway groove 33 in base plate 22 corresponding positions, this raceway groove 33 scope that contains of surrounding promptly is equivalent to this respective block opening 34 contained scopes, and stamps out the annular corresponding aperture that is used to be installed with fluorescent tube 24 in this respective block in the lump.Afterwards, the block that will stamp out is bent to form bracing frame 23.Because of cutting out the relation of raceway groove 33, the size of bracing frame 23 is less than this block opening 34 that forms perforation in this base plate 22 after bending.In addition, bracing frame 23 also can be formed with respect to the direct punching press of the opposite side of fluorescent tube 24 by base plate 22, promptly need not cut out raceway groove 33.Below only for illustrating, the people who has the knack of the affiliated correlation technique of the present invention is when thinking to carry different embodiments.

Fig. 4 is along the cut-open view of 1-1 profile line among Fig. 3.C shape bolster 26 is arranged between bracing frame 23 and the fluorescent tube 24.The breach 31 that the ring arm is 25 is slightly larger than the diameter of this fluorescent tube 24, and the opening 32 of bolster 26 is less than the diameter of this fluorescent tube 24, as long as yet can be firmly in practical application with fluorescent tube, the present invention is not subject to the magnitude relationship of the opening 32 of the breach 31 of 25 on arm of ring and bolster 26.

With reference to Fig. 5, can utilize similar fashion to produce support column 27 in the backboard 22, promptly support column 27 can form by stamping out respective block in the base plate 22 and bending equally.In this embodiment, the height of support column 27 is greater than bracing frame 23, and it is as distance piece, with and display panels between be separated out the space of configured light pipe 24.

Base plate 22 of the present invention and bracing frame 23 are integrally formed, and promptly bracing frame 23 is to utilize the respective block in the base plate 22 to be bent into, and can save extra making supporting seat and supporting seat is assembled in cost on the base plate.In addition, add the vibration that bolster 26 can effectively improve

bracing frame

23 and 24 generations of fluorescent tube, and then reduce the noise that produces because of vibration.

Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.

Claims

1. a backlight module is characterized in that, comprises:

One backboard comprises a base plate and at least one bracing frame, and this bracing frame is formed by this base plate bending, and in fact perpendicular to this base plate; And

At least one fluorescent tube is arranged on this base plate, and is gripped by this bracing frame.

2. backlight module as claimed in claim 1 is characterized in that, this bracing frame is bent to form after cutting out respective block in this base plate.

3. backlight module as claimed in claim 2 is characterized in that, after this block bending, forms a block opening in this base plate corresponding position, and the size of this bracing frame is less than this block opening in this base plate.

4. backlight module as claimed in claim 1 is characterized in that, this bracing frame comprises two ring arms, and forms a breach between this two rings arm.

5. backlight module as claimed in claim 4 is characterized in that this breach is slightly larger than the diameter of this fluorescent tube, so that this fluorescent tube is installed with in this bracing frame.

6. backlight module as claimed in claim 1 is characterized in that other comprises bolster, and this bolster is located between this bracing frame and the fluorescent tube.

7. backlight module as claimed in claim 6 is characterized in that, this bolster ringwise, and tool one opening, this opening is less than the diameter of this fluorescent tube.

8. backlight module as claimed in claim 6 is characterized in that this bolster is made by rubber.

9. backlight module as claimed in claim 1 is characterized in that this backboard is made by metal material.

10. backlight module as claimed in claim 1 is characterized in that this backboard comprises a support column in addition, is formed by this base plate bending.

11. backlight module as claimed in claim 10 is characterized in that, this support column is bent to form after cutting out respective block in this base plate.

12. a lamp tube supporting structure is applied to support the fluorescent tube of backlight module, it is characterized in that, comprises:

One base plate; And

At least one bracing frame formed by this base plate bending, and this at least one bracing frame is used to grip this fluorescent tube in fact perpendicular to this base plate;

Wherein this base plate and bracing frame are integrated rigid structures.

13. lamp tube supporting structure as claimed in claim 12 is characterized in that, this bracing frame is bent to form after cutting out respective block in this base plate.

14. lamp tube supporting structure as claimed in claim 13 is characterized in that, after this block bending, forms a block opening in this base plate corresponding position, the size of this bracing frame is less than this block opening in this base plate.

15. lamp tube supporting structure as claimed in claim 12 is characterized in that, this bracing frame comprises two ring arms, and forms a breach between this two rings arm.

16. lamp tube supporting structure as claimed in claim 15 is characterized in that, this breach is slightly larger than the diameter of this fluorescent tube, so that this fluorescent tube is installed with in this bracing frame.

17. lamp tube supporting structure as claimed in claim 12 is characterized in that other comprises bolster, this bolster is located between this bracing frame and the fluorescent tube.

18. lamp tube supporting structure as claimed in claim 17 is characterized in that, this bolster ringwise, and tool one opening, this opening is less than the diameter of this fluorescent tube.

19. lamp tube supporting structure as claimed in claim 17 is characterized in that, this bolster is made by the material of tool buffering character.

20. lamp tube supporting structure as claimed in claim 12 is characterized in that, this base plate and this bracing frame are made by metal material.

21. lamp tube supporting structure as claimed in claim 12 is characterized in that, other comprises a support column, is formed by this base plate bending.

22. lamp tube supporting structure as claimed in claim 21 is characterized in that, this support column is bent to form after cutting out respective block in this base plate.