CN201145797Y

CN201145797Y - Backlight module

Info

Publication number: CN201145797Y
Application number: CNU2008200548923U
Authority: CN
Inventors: 王文科; 张丽
Original assignee: Coretronic Suzhou Corp
Current assignee: TCL China Star Optoelectronics Technology Co Ltd
Priority date: 2008-01-18
Filing date: 2008-01-18
Publication date: 2008-11-05
Anticipated expiration: 2018-01-18

Abstract

A backlight module comprises a back plate and an upper frame body, wherein the back plate and the upper frame body are buckled to form an accommodating chamber, and a plurality of light-emitting light sources are arranged in the accommodating chamber. The back plate is provided with a bottom surface, two frames and at least one cantilever. The bottom surface extends horizontally and is provided with two opposite side edges. The two frames extend upwards from the two side edges respectively, each frame is provided with a first side edge and a top surface, the first side edge is connected with the bottom surface and forms an included angle with the bottom surface, and the top surface is parallel to the bottom surface. The cantilever extends horizontally from two sides, the tail end of the cantilever is provided with a positioning column extending vertically, and the top end of the positioning column penetrates through and extends out of the top surface of the frame. The upper frame body is provided with a top surface and at least one opening. The top surface extends horizontally and is provided with two opposite side edges of the two frames corresponding to the bottom surface. At least one opening is arranged on the edges of the two side edges of the top surface, and the positioning column of the back plate penetrates through the opening. The utility model discloses a screw and reference column and go up the framework and cooperate and will go up framework and backplate lock solid together, can improve product yield and packaging efficiency.

Description

Module backlight

Technical field

The utility model is about a kind of module backlight, particularly relevant for a kind of improvement of fixed sturcture of module backlight.

Background technology

General LCD product all need provide light source by a module backlight, and module backlight comprises a lower house and a upper frame body usually, and lower house and upper frame body fasten and form a reception room, in reception room some illuminating sources, diffusion sheet and prismatic lens etc. can be set.The light that illuminating source sends, promptly can be LCD product light source is provided so that irradiant brightness and briliancy are adjusted through diffusion sheet, prismatic lens etc.

In existing module backlight, lower house and upper frame body are to pass through screw locking, wherein lower house has a bottom surface, form a trapezoidal frame from bottom surface dual-side bending, upper surface riveted joint in trapezoidal frame has a reference column, the corresponding reference column of the end face frame of upper frame body is provided with plurality of opening, and the perforate that screw passes frame cooperatively interacts with the reference column of lower house and upper frame body and lower house are locked.

Be outward extended with certain-length owing to should have the trapezoidal frame of the lower house of module backlight now from the bottom surface, but there is not support component, therefore on the structural strength a little less than, so in riveted joint reference column and handling process, trapezoidal frame can be because of being subjected to the external force effect that the reference column of riveting on the trapezoidal frame is shifted, and because upper frame body and lower house are to be matched by a plurality of screws and relative reference column incompatiblely to be locked, therefore when displacement takes place in reference column, can produce the dislocation situation between the perforate of upper frame body and relative reference column, cause and successfully to screw in screw in the reference column, come aligned apertures and reference column if spur upper frame body by force, then may cause the distortion of upper frame body, when follow-up assembling liquid crystal panel, may cause the situation of panel ruptures like this.

In view of this, necessary aforementioned structure is improved, to overcome aforesaid defective.

The utility model content

The purpose of this utility model is to provide a kind of module backlight, has the fixed sturcture of improvement, can eliminate aforesaid puzzlement, and and then can improve product yield and packaging efficiency.

For reaching this purpose, the module backlight of the utility model one embodiment is made up of a backboard and a upper frame body, and backboard and upper frame fasten mutually and therebetween form a reception room, and some illuminating sources are set in the reception room.Backboard has a bottom surface, two frames and at least one cantilever.The bottom surface horizontal-extending also has relative dual-side.Two frames extend upward from dual side-edge respectively, and each frame has a first side and an end face, and the first side connects the bottom surface and forms an angle with the bottom surface, and end face is parallel to the bottom surface.Cantilever is from the dual side-edge horizontal-extending, and the end of cantilever is provided with a reference column that vertically extends, and reference column has a top, and the end face of frame is passed and stretches out on the top.Upper frame body has an end face and at least one perforate.The end face horizontal-extending also has relative dual side-edge, and dual side-edge is corresponding to two frames of bottom surface.At least one perforate is arranged at the edge of the dual side-edge of end face, and the reference column of backboard passes perforate.Also having a screw matches the reference column reference column with reference column and upper frame body and this upper frame body and this backboard is locked together.

Compared with prior art, the reference column of the utility model embodiment is to be arranged on the cantilever that extend horizontally away from the backboard bottom surface and to stretch out the upper surface of frame, cantilever can provide the stronger supporting role of intensity on the structure, and because reference column is the below that is positioned at frame, therefore be not vulnerable to the external force effect, unlikely generation displacement and is difficult for taking place the dislocation situation between the corresponding perforate of upper frame body, so can help assembling, improve the product yield.

Description of drawings

First figure is the three-dimensional combination figure of the module backlight of the utility model one embodiment.

Second figure is the three-dimensional exploded view of the module backlight of the utility model one embodiment.

The 3rd figure is the left side view of backboard of the module backlight of the utility model one embodiment.

The 4th figure is the partial enlarged drawing of the module backlight of the utility model one embodiment.

Embodiment

The direction term of being mentioned in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to annexed drawings.Therefore, the direction term of use is to be used for illustrating not to be to be used for limiting the utility model.

See also shown in first figure and second figure, the module backlight 1 of the utility model one embodiment includes a backboard 10 and a upper frame body 20, and backboard 10 and upper frame body 20 fastens mutually and therebetween form a reception room.Be provided with some illuminating sources 30 in the reception room, and be provided with some blooming pieces such as diffusion sheet 40 and prismatic lens 50 etc. in the reception room in addition, it is arranged at the top of illuminating source 30, to adjust the light that illuminating source 30 sends.Because it is identical with prior art constructions to be arranged at structures such as the interior illuminating source of module backlight, diffusion sheet, prismatic lens, and is not emphasis of the present utility model, therefore will repeat no more at this.

Backboard 10 has a rectangular bottom surface 11, and this bottom surface horizontal-extending also has relative dual-side, in the present embodiment, upwards bends extension respectively and forms a frame 12 from two lengthwise sides.The cross section of this frame 12 is trapezoidal, and detailed says, frame 12 has a first side (not label), an end face 123 and a second side 122, and the first side connects bottom surface 11, and end face 123 horizontal-extendings also connect the first side and second side 122.In the present embodiment, the first side be extend obliquely upward and with obtuse angle of folder, bottom surface 11, then hang down as for bottom surface 11 in second side 122.In addition, 11 two lengthwise sides stretch out and are formed with at least one rectangle sheet horizontal boom 13 from the bottom surface, in the present embodiment, are provided with several cantilevers 13, and to each other at intervals.But the utility model is not limited to the number of cantilever, also can set arbitrarily according to the design needs.In addition, in an illustrated embodiment, the spacing that cantilever is 13 is fixed, but also can adopt revocable spacing if needed.

According to a preferred embodiment of the present utility model, these cantilevers 13 are to see through punching press by the material at the position, first side of frame 12 to form, and when being bent to form frame 12, only the position, first side is bent, and keep 11 relative horizontal-extending states of cantilever 13 and bottom surface.Therefore, can stay punching press cantilever 13 breach 121 afterwards on the frame 12.So, cantilever 13 can be positioned at the below of frame 12, and sees through suitable controlling dimension and bending angle, and the end of cantilever 13 is to second side 122 horizontal-extendings and be no more than second side 122.In vertical direction, 13 on cantilever is the end face 123 that is parallel to frame 12, and the end of cantilever 13 then preferably can be advisable before and after the middle position of end face 123 position.

Consult the 3rd figure and the 4th figure simultaneously, at least one cantilever 13 is provided with a reference column 14 that vertically extends, and in the present embodiment, cantilever 13 is provided with a hole (not label), and it for example can be located at the end of cantilever 13, riveted joint one reference column 14 on this hole.The position of the end face 123 corresponding reference columns 14 of trapezoidal frame 12 offers a hole 124, its sectional dimension is slightly larger than reference column 14, can pass and stretch out the end face 123 of trapezoidal frame 12 for the top of reference column 14, also can cause restriction with respect to the displacement of end face 123, prevent the over-travel of reference column 14 for reference column 14.In this embodiment, this hole 124 is to be circular hole, but also can adopt other shape.

The second side of the frame 12 of backboard 10 is to being outside equipped with some positioning convex column 15, and the flanging 16 of backboard is to being outside equipped with some positioning convex column 17, and the outer rim of upper frame body 20 is provided with the fluting 25,26 with positioning

convex column

15,17 corresponding cooperations.

Consult second figure again, framework 20 has a rectangular top 21 on the module backlight 1 of the utility model embodiment, and end face 21 horizontal-extendings also have relative dual side-edge, and dual side-edge is corresponding to two frames 12 of backboard 10 and extend downwards and form two sidewalls 22.The edge of the dual side-edge of end face 21 is provided with the reference column 14 corresponding perforates 24 with backboard 10.

When assembling module 1 backlight, aforementioned illuminating source 30 is installed in the backboard 10, again blooming

piece

40,50 is arranged at illuminating source 30 tops, then upper frame body 20 is fastened on the backboard 10, wherein the fluting 25,26 of the outer rim of upper frame body 20 be snapped in the frame 12 of backboard 10 and flanging 16 outside surfaces positioning

convex column

15,17, reference column 14 passes the perforate 24 of the end face 21 of upper frame body 20, and then pass this perforate 24 with screw 60 and cooperate with reference column 14 and upper frame body 20, so upper frame body 20 and backboard 10 can be locked together.

Module backlight 1 according to the utility model embodiment, its reference column 14 is (for example by riveted joint) to be set on the cantilever 13 that extends from the bottom surface of backboard 10 11 one, compare with existing structure, cantilever 13 can provide stronger structural strength, and reference column 14 is positioned at inboard, frame 12 below, therefore more is not subject to the external force effect.In addition, reference column 14 is to extend upward and pass hole 124 set on the end face 123 of frame 12 from cantilever 13, and therefore under the restriction of hole 124, reference column 14 can not produce excessive skew.Therefore sum up, the backboard 10 of the utility model embodiment can guarantee accurate cooperation of 14 of screw 60 and reference columns with the fixed sturcture of 20 of upper frame bodies, and then improves product yield and production efficiency.

The above person is a better embodiment of the present utility model only, and the personage who is familiar with this case technology helps the equivalence of doing according to spirit of the present invention and modifies or variation, all is covered by in the claim scope of the present invention.Arbitrary embodiment of the present utility model in addition or claim must not reached the disclosed whole purposes of the present invention or advantage or characteristics.In addition, summary part and title only are to be used for auxiliary patent document search, are not to be used for limiting interest field of the present invention.

Claims

1, a kind of module backlight includes backboard, upper frame body, screw and some illuminating sources; It is characterized in that: described backboard has a bottom surface, described bottom surface horizontal-extending also has relative dual-side, dual side-edge from described bottom surface extends upward and forms two frames, each frame has a first side and an end face, this first side connects this bottom surface and forms an angle with this bottom surface, the end face of described frame is parallel to the bottom surface, dual side-edge horizontal-extending from the bottom surface is formed with at least one cantilever, the end of this cantilever has a reference column that vertically extends, this reference column has a top, and the end face of this frame is passed and stretches out on this top; Upper frame body and backboard form a reception room, this upper frame body has an end face, the end face horizontal-extending of this upper frame body also has relative dual side-edge, this dual side-edge of the end face of upper frame body is corresponding to two frames of backboard, at least one perforate is arranged on one of them of dual side-edge of end face of this upper frame body, and the reference column of aforementioned cantilever passes this perforate; Described screw matches with reference column and upper frame body; Some illuminating sources are arranged in the reception room of backboard and upper frame body formation.

2, module backlight as claimed in claim 1, it is characterized in that: each this frame has more a second side, this second side is perpendicular to aforementioned bottom surface, the end face of this frame connects described first side and this second side, and described cantilever is to this second side horizontal-extending and be no more than this second side.

3, module backlight as claimed in claim 1 is characterized in that: described cantilever is to form from aforementioned frame punching press, and this frame is to forming a breach in the cantilever place.

4, module backlight as claimed in claim 1 is characterized in that: around the described backboard to being outside equipped with some positioning convex column, and described upper frame body around be provided with some flutings with the corresponding cooperation of these positioning convex column.

5, module backlight as claimed in claim 1, it is characterized in that: the end face of each this frame is provided with a hole, and this hole is passed on the top of described reference column.

6, module backlight as claimed in claim 5 is characterized in that: described hole is a circular hole.

7, module backlight as claimed in claim 1 is characterized in that: aforementioned at least one cantilever is several, and to each other at intervals.

8, module backlight as claimed in claim 1, it is characterized in that: it further includes some blooming pieces, is arranged in the described reception room, and is positioned at the top of aforementioned illuminating source.