CN1321552C

CN1321552C - circuit board tightening device

Info

Publication number: CN1321552C
Application number: CNB2003101148578A
Authority: CN
Inventors: 汪秉龙; 庄峰辉; 林惠忠
Original assignee: Harvatek Corp
Current assignee: Harvatek Corp
Priority date: 2003-11-07
Filing date: 2003-11-07
Publication date: 2007-06-13
Anticipated expiration: 2023-11-07
Also published as: CN1614655A

Abstract

A circuit board clamping device is applied to a light emitting diode display screen, comprising a plurality of circuit boards adjacent to each other, a plurality of pairs of L-shaped fixing frames respectively fixed on the circuit boards, and at least one U-shaped tenon clamping the L-shaped fixing frame. The U-shaped tenon clamps the L-shaped fixing frame connected to the circuit board to provide a clamping effect of horizontally clamping the circuit board toward the center line, provide the tight connection required by the light emitting diode display screen, and achieve good uniform display quality of the light emitting diode display screen.

Description

The circuit board Fastening device

Technical field

The present invention relates to a kind of circuit board Fastening device, particularly a kind of circuit board Fastening device that is applied to light emitting diode (LED) display screen.

Background technology

Large-scale light emitting diode (LED) display screen (Light Emitting Diode Display, LED Display) constituted by multi-disc dot matrix LEDs unit, aforesaid light-emitting diode is to be placed on the multichip circuit plate respectively and to be arranged, in order to display message; For reaching the size requirements of large-screen, this circuit board of multi-disc must be connected in twos, and accurately control fitting tightly between this circuit board, avoid the information that shows because the spacing influence between this circuit board shows that the uniformity is with quality.

Please refer to shown in Figure 1A, it is the device of known technology packing circuit board, it is applied to have

multichip circuit plate

101a, 102a and the 103a of both sides, and this

circuit board

101a, 102a and 103a are mounted with dot matrix LEDs (not icon) respectively at the front and are arranged with four screw seats in order to display message and in four corners at the back side; Now defining this four screws seat respectively is two-screw seat 111a and two-screw seat 112a, this two-screw seat 111a (112a) is the diagonal angle setting, that is, adjacent in twos this circuit board is to utilize this screw seat 111a wherein to cooperate locking to reach the packing effect with wherein this screw seat 112a; For example, this adjacent in twos circuit board (as 101a and 102a), the stator 14a of apparatus two screws and two-screw 13a are cooperated the screw seat 112a that secures to this circuit board 101a and the screw seat 111a of this circuit board 102a.

Yet this two-screw hole of this stator 14a notes the precision of spacing when making, and this

screw seat

111a, 112a are arranged at the accuracy on this circuit board 101a, the 102a; The said goods all has acceptable tolerance when making, and is easy to generate error after the combination, and this Fastening device is the locating engagement that belongs to fixed range, and the direction of locking can't provide the packing effect of horizontal pinching for vertical up and down; Shown in Figure 1B, this

circuit board

101a, 102a produce trickle angle theta because of combined tolerances; Or with reference to shown in the figure 1C, meet improper level and cut to application of force F, cause this

circuit board

101a, 102a to produce relative displacement x easily.

At the defective of prior art, the present invention proposes a kind of reasonable in design and effectively improve the circuit board Fastening device of above-mentioned defective.

Summary of the invention

Main purpose of the present invention is to provide a kind of circuit board Fastening device, and the packing that adjacent in twos circuit board is combined closely effect is provided.

In order to achieve the above object, the invention provides a kind of circuit board Fastening device, be applied to light emitting diode (LED) display screen, it comprises adjacent in twos a plurality of circuit boards, is immobilizated in many to L type fixed mount, at least one U type trip that holds this to L type fixed mount on this circuit board respectively, in order to packing in conjunction with this adjacent in twos circuit board.

The concrete technical scheme of circuit board Fastening device of the present invention is as follows, comprising:

A plurality of circuit boards, adjacent in twos, it has information display surface that dot matrix LEDs is set respectively, and with respect to the fixing surface of this information display surface;

Many to L type fixed mount, this to L type fixed mount have the fixing surface that is connected in this circuit board a pair of horizontal part, and be shaped in this pair of upstanding portion respectively to horizontal part one ora terminalis, wherein, this to L type fixed mount this to rise part in correspondence with each other and be close to; And

At least one U type trip, hold this to this of L type fixed mount to rise part.

Aforesaid circuit board Fastening device, wherein, this is to be made by the material of tool high heat-conduction coefficient to L type fixed mount, in order to the heat sinking function of this circuit board to be provided.

Aforesaid circuit board Fastening device, wherein, this is tabular to horizontal part, increases this contact area to horizontal part and this circuit board with this, in order to improve the radiating efficiency of this circuit board.

Aforesaid circuit board Fastening device, wherein, this sectional area to rise part is respectively wedge type, and the thickness of described rise part is upwards increased gradually by the bottom that is arranged in this horizontal part, this U type trip is provided with in the inboard and cooperates this butt inclined-plane to the wedge type rise part, in order to the fixing of working in coordination.

Aforesaid circuit board Fastening device, wherein, this U type trip is provided with by the left and right sides fixing piece that extends internally, and this has tank corresponding to this fixing piece respectively to rise part, in order to the fixing of working in coordination.

Aforesaid circuit board Fastening device, wherein, this U type trip offers at least one side screw at least one side surface, cooperate to adjust screw and lock, with strengthen this to this of L type fixed mount to the packing function between rise part.

Aforesaid circuit board Fastening device, wherein, this U type trip offers at least one screw of going up in upper surface, cooperates the adjustment screw to lock, in order to adjust this this planarization to horizontal part to L type fixed mount.

Aforesaid circuit board Fastening device, wherein, this has concavity or convex structure respectively to rise part, closes in order to the chucking of camphane each other.

Beneficial effect of the present invention is: the present invention is by utilizing the sincere L type fixed mount that has been connected in circuit board of U type trip folder, provide circuit board level to press from both sides admedian packing effect, and the required fluid-tight engagement degree of this light emitting diode (LED) display screen, and can realize light emitting diode (LED) display screen good homogeneous display quality.

In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet appended graphic only provide with reference to and the explanation usefulness, be not to be used for the present invention is limited.

Description of drawings

Figure 1A is the assembling schematic diagram of known packing circuit board arrangement;

Figure 1B is the improper schematic diagram of the assembling of known packing circuit board arrangement;

Fig. 1 C is the stressed schematic diagram of known packing circuit board arrangement;

Fig. 2 is the schematic diagram of circuit board Fastening device first embodiment of the present invention;

Fig. 3 is the schematic diagram of circuit board Fastening device second embodiment of the present invention;

Fig. 4 A is the schematic diagram of circuit board Fastening device the 3rd embodiment of the present invention;

Fig. 4 B is the schematic diagram of circuit board Fastening device the 4th embodiment of the present invention;

Fig. 5 is the schematic diagram of circuit board Fastening device the 5th embodiment of the present invention; And

Fig. 6 is the schematic diagram of circuit board Fastening device the 6th embodiment of the present invention.

Wherein, description of reference numerals is as follows:

Circuit board

101a, 102a,

103a screw seat

111a, 112a

Screw 13a stator 14a

Trickle angle theta relative displacement x

Level is cut to application of force F circuit board 10

Fixing surface 101 L type fixed mounts 21

Horizontal part 211 rise parts 212

Tank 2121 side screws 231

Last screw 214 concavity structures 215

Convex structure 216 U type trips 22

Fixing piece 221 screws 23

Adjust spiral shell 24 and adjust screw 25

Embodiment

The present invention utilizes the sincere L type fixed mount that has been connected in circuit board of U type trip folder, provides this circuit board level to press from both sides admedian packing effect, to reach light emitting diode (LED) display screen good homogeneous display quality.

Please refer to shown in Figure 2, it is for first embodiment of circuit board Fastening device of the present invention, for reaching the light emitting diode (LED) display screen of even demonstration, it comprise adjacent in twos a plurality of circuit boards 10, respectively be immobilizated in many on this circuit board 10 to L type fixed mount 21, hold this at least one U type trip 22 to L type fixed mount 21, in order to packing in conjunction with this adjacent in twos circuit board 10; Wherein, this circuit board 10 have information display surface (not icon) that dot matrix LEDs is set, and with respect to the fixing surface 101 of this information display surface; The rise part 212 that this has the horizontal part 211 of the fixing surface 101 that is connected in this circuit board 10 respectively and be shaped in these horizontal part 211 1 ora terminalis L type fixed mount 21, this horizontal part 211 is to be immobilizated on this circuit board 10 by known manner such as screw 23 or gummeds, this to L type fixed mount 21 this to rise part 212 in correspondence with each other and be close to; This U type trip 22, hold this to this of L type fixed mount 21 to rise part 212, provide the admedian strength of level that two these circuit boards 10 cards are compeled to tighten up.

This rise part 212 further comprises the cross section that is wedge type, and the thickness of this rise part 212 is upwards increased gradually by the bottom that is arranged in this horizontal part 211, this U type trip 22 is provided with in the inboard and cooperates this butt inclined-plane to wedge type rise part 212, the fixing of can working in coordination.

Please refer to shown in Figure 3, it is for second embodiment of circuit board Fastening device of the present invention, it inwardly respectively extends fixing piece 221 in these U type trip 22 left and right sides, and this has tank 2121 corresponding to this fixing piece 221 respectively to rise part 212, reaches the effect of mutual fixing.

Please refer to shown in Fig. 4 A and Fig. 4 B, the 3rd and the 4th embodiment that it is respectively circuit board Fastening device of the present invention represents that respectively this has concavity structure 215 or convex structure 216 structures or both to rise part 212 and has concurrently, closes with the chucking of camphane each other; Can protect this adjacent in twos circuit board 10 not influenced by shear stress by this to camphane card state between the rise part 212 produces displacement, is kept the display quality of this light emitting diode (LED) display screen.

Please refer to shown in Figure 5, it is the fifth embodiment of the present invention, this U type trip 22 is to offer more than one side screw 231 in a side surface, cooperate adjustment screw 24 to lock, to strengthen this this packing function to 212 of rise parts to L type fixed mount 21, if the demand of bilateral packing is further arranged, this U type trip 22 can be offered at least one this side screw 231 in surface, the left and right sides.

Please refer to shown in Figure 6, it is the sixth embodiment of the present invention, and when the out-of-flatness of the bottom surface of this U type trip 22, this U type trip 22 can offer at least one screw 214 of going up in upper surface, cooperate adjustment screw 25 to lock, in order to adjust this this planarization to horizontal part 211 to L type fixed mount 21.

The present invention also provides the heat radiation function of this circuit board 10, this is to be made by the material of tool high heat-conduction coefficient to L type fixed mount 21, in order to the heat sinking function of this circuit board 10 to be provided, wherein this horizontal part 211 is tabular, increase the contact area of this horizontal part 211 and this circuit board 10 whereby, in order to improve the radiating efficiency of this circuit board 10.

In sum, the present invention can reach its intended purposes and effect really, the technological means of above-mentioned announcement, technical scheme only are better embodiment of the present invention, and any modification and variation of making according to design of the present invention, feature all should be included in the application's the claim.

Claims

1. A circuit board tightening device, which is applied to a light-emitting diode display, is characterized in that, comprising:

A plurality of circuit boards, which are adjacent to each other, and respectively have an information display surface provided with a matrix of light-emitting diodes, and a holding surface relative to the information display surface;

Multiple pairs of L-shaped fixing brackets, the L-shaped fixing brackets have a horizontal part connected to the holding surface of the circuit board, and a vertical part integrally formed on an end edge of the horizontal part, wherein the multiple pairs The plurality of pairs of upright parts of the L-shaped fixing frame correspond to each other and are in close contact with each other; and

At least one U-shaped tenon clamps the multiple pairs of upright portions of the multiple pairs of L-shaped fixing frames.

2 . The circuit board pressing device according to claim 1 , wherein the L-shaped fixing frame is made of a material with high thermal conductivity to provide heat dissipation for the circuit board. 3 .

3. The circuit board clamping device according to claim 2, wherein the horizontal portion is plate-shaped, thereby increasing the contact area between the horizontal portion and the circuit board, so as to improve the stability of the circuit board. cooling efficiency.

4. The circuit board clamping device according to claim 1, wherein the cross-sectional areas of the plurality of pairs of vertical parts are respectively wedge-shaped, and the thickness of the vertical parts is determined by connecting to the bottom end of the horizontal part. Gradually increasing upwards, the U-shaped tenon is provided with abutment slopes on the inner side to match the pairs of wedge-shaped upright parts, so as to cooperate and hold each other.

5. The circuit board clamping device according to claim 1, wherein the U-shaped tenon has retaining blocks extending inward from the left and right sides, and the plurality of pairs of upright parts have respective retaining blocks corresponding to the retaining blocks. Blocks are held in slots to fit each other.

6. The circuit board tightening device according to claim 1, wherein said U-shaped tenon is provided with at least one side screw hole on at least one side surface, which is locked in with adjusting screws to strengthen said plurality of pairs. The pressing function between the plurality of pairs of upstanding parts of the L-shaped fixing frame.

7. The circuit board clamping device according to claim 1, wherein the U-shaped tenon is provided with at least one upper screw hole on the upper surface, which is locked in with an adjusting screw to adjust the plurality of pairs of L-shaped tenons. The flatness of the plurality of pairs of horizontal portions of the fixed frame.

8 . The circuit board pressing device according to claim 1 , wherein the plurality of pairs of upright portions respectively have a concave or convex structure, so as to engage with each other by clipping.