CN202328056U - LED (Light Emitting Diode) connecting and fixing device, LED backlight source, liquid crystal display panel and liquid crystal display device - Google Patents

Abstract

The utility model provides an LED connection and fixing device for fixing an LED lamp on a substrate (5), which comprises an LED lamp (1) with a bracket and a fixing piece (4) fixed on the substrate (5) , the LED lamp with bracket (1) is detachably connected with the fixing part (4). Correspondingly, an LED backlight including the LED connection and fixing device, a liquid crystal display panel using the LED backlight, and a liquid crystal display device using the liquid crystal display panel are provided. The LED connecting and fixing device of the utility model has the advantages of simple structure, detachable assembly, convenient replacement and maintenance of LED lamps, and can reduce labor costs.

Description

An LED connection and fixing device, an LED backlight source, a liquid crystal display panel, and a liquid crystal display device

technical field

The utility model belongs to the technical field of display manufacturing, and in particular relates to an LED connection and fixing device, an LED backlight including the LED connection and fixing device, a liquid crystal display panel using the LED backlight, and a LED backlight using the LED backlight. A liquid crystal display device of the liquid crystal display panel.

Background technique

LED (Light Emitting Diode, light emitting diode) is a solid-state semiconductor device that can directly convert electricity into light. LED uses a solid semiconductor chip as a light-emitting material. In the semiconductor, the recombination of carriers causes photon emission, and directly emits red, yellow, blue, green, blue, orange, purple, and white light.

At present, LEDs are widely used in lighting, notebook computer backlights, display backlights, and light drives due to their advantages such as small size, low power consumption, long service life, high brightness, low heat generation, environmental protection, and durability.

In the field of display, LEDs are usually used as backlight sources. When using LED as a backlight source, the LED light is usually directly fixed on the substrate. In order to fix the LED light on the substrate, the LED light is generally welded on the substrate with solder paste, but this fixing method is used to connect the LED light and Substrate, the high temperature during welding is easy to cause damage to the LED lamp; and the welding process of the LED lamp is more complicated, requiring skilled workers to operate, and the technical requirements for the workers are higher, so the labor cost is higher; In addition, once the LED lamp is on the substrate After the soldering is done, it is not easy to replace, and the replacement process is time-consuming and laborious, and it is also easy to cause double scrapping of the LED lamp and the substrate during the replacement process.

Utility model content

The technical problem to be solved by the utility model is to provide a simple structure, detachable and easy-to-replace LED connection and fixing device for the above-mentioned defects in the prior art, and a liquid crystal display panel using the LED connection and fixing device, And a liquid crystal display device using the liquid crystal display panel.

The technical solution adopted to solve the technical problem of the utility model is that the LED connection and fixing device is used to fix the LED lamp on the substrate, which includes an LED lamp with a bracket and a fixing piece fixed on the substrate. The LED lamp is detachably connected with the fixing part.

Preferably, a slot is formed on the fixing member, and the LED lamp with bracket includes an LED lamp and a bracket integrated with the LED lamp, and the bracket can be engaged in the slot.

Further preferably, the bracket in the LED lamp with bracket is located at the bottom of the LED lamp, and the bracket includes two L-shaped pins, and the two L-shaped pins are symmetrically distributed in an inner splayed shape; the fixing member The card slot on the top is located on the top of the fixing piece, the cross-sectional shape of the card slot is trapezoidal, and the size of the trapezoidal card slot is adapted to the size of the two L-shaped pins, so that the two L-shaped pins It can be engaged in the trapezoidal slot so as to be connected with the fixing piece.

More preferably, the fixing member is welded on the substrate; the bottom of the fixing member has a rectangular through hole, and the top of the rectangular through hole is connected to the lower bottom surface of the trapezoidal slot; the substrate is a PCB board.

Preferably, the LED connection and fixing device further includes a locking unit for fixing the two L-shaped pins in the trapezoidal slot.

Wherein, the locking unit includes several telescopic balls arranged on the outer surfaces of the two L-shaped pins, and a spring arranged between each telescopic ball and the outer surface on which the telescopic balls are located. When an external force is applied, the corresponding spring is compressed and retracted into the outer surface. Several concave holes are distributed on the two slopes of the trapezoidal slot, and the size and quantity of the telescopic balls are consistent with the size and The number is the same, and the position of each telescopic ball on the outer surface of its corresponding pin corresponds to the position of a concave hole on the slope of the trapezoidal slot, so that the two L-shaped pins are snapped into the fixing piece The elastic potential energy in the spring corresponding to each telescopic ball is released, and the telescopic ball is pushed into a corresponding concave hole and contacts it.

Preferably, two telescopic balls and two concave holes are used; the two telescopic balls are symmetrically distributed on the outer surfaces of the two L-shaped pins.

Further preferably, the top of the LED lamp with a bracket contains chips and phosphors, each of the two L-shaped pins contains a metal wire, one end of the metal wire is connected to the positive electrode of the chip, and the other One end of a metal wire is connected to the negative electrode of the chip, and the other ends of the two metal wires are respectively connected to the telescopic balls on the pins; the two L-shaped pins are made of PC, and the two L-shaped pins are made of PC. The telescopic ball and the fixing part are made of metal; the fixing part is connected with the power supply, when the two telescopic balls enter the two concave holes and contact with them, the positive and negative poles of the LED lamp and the positive and negative poles of the power supply pole on.

Alternatively, the locking unit includes several convex contacts arranged on the outer surfaces of the two L-shaped pins, and the pins are made of flexible materials, and the two slopes of the trapezoidal slot There are several concave holes distributed on each, the size and number of the convex contacts are the same as the size and number of the concave holes, and the position of each convex contact on the outer surface of its corresponding pin is the same as The position of a concave hole corresponds to the slope of the trapezoidal slot, so that after the two L-shaped pins are snapped into the trapezoidal slot on the fixing piece, each convex contact enters into a corresponding concave hole. hole and in contact with it.

Preferably, two convex contacts and two concave holes are used; the two convex contacts are symmetrically distributed on the outer surfaces of the two L-shaped pins.

Further preferably, the top of the LED lamp with a bracket contains chips and phosphors, the two L-shaped pins are made of metal sheets, and the tops of the two metal sheets are respectively connected to the positive and negative electrodes in the chip. connection, the convex contacts and fixing parts are made of metal; the fixing parts are connected to the power supply, when the two convex contacts enter the two concave holes and contact with them, the positive and negative of the LED light The pole is connected with the positive and negative poles of the power supply.

An LED backlight source includes the above-mentioned LED connection and fixing device.

A liquid crystal display panel adopts the above-mentioned LED backlight source.

A liquid crystal display device adopts the above-mentioned liquid crystal display panel.

Compared with the prior art, the LED connecting and fixing device of the utility model has the following advantages:

①. Optimized the way of soldering LED lamps with solder paste in the prior art. The LED connection and fixing device is detachable, which is convenient for the replacement of LED lamps;

②.Since the structure is easy to disassemble and assemble, the technical requirements for workers are low, so the work efficiency of LED lamp installation can be improved, and labor costs can be reduced;

③. The LED connection and fixing device can simultaneously limit the movement of the LED lamp in the direction parallel to the substrate and in the direction perpendicular to the substrate, so that it can be effectively fixed on the substrate.

Description of drawings

Fig. 1 is a front view of a single LED lamp with a bracket in Embodiment 1 of the present invention after it is engaged with a single fixing piece welded on the substrate;

Fig. 2 is a schematic structural view of an LED lamp with a bracket in Embodiment 1 of the utility model;

Wherein: Fig. 2 (a) is the top view of the LED lamp with bracket;

Fig. 2 (b) is the front view of the LED lamp with bracket;

Fig. 2 (c) is the left view of the LED lamp with bracket;

Fig. 2 (d) is the perspective view of the LED lamp with bracket;

Fig. 3 is a schematic structural view of the fixing member welded on the substrate in Embodiment 1 of the present utility model;

Wherein: Fig. 3 (a) is the top view of the fixture welded on the substrate;

Fig. 3 (b) is the front view of the fixture welded on the substrate;

Fig. 3 (c) is the left view of the fixture welded on the substrate;

Figure 3(d) is a perspective view of a fixture welded on the substrate;

Fig. 4 is a three-dimensional structural schematic diagram of a group of LED lamps with brackets and a group of fixing parts welded on the substrate in Embodiment 1 of the present utility model;

In the figure: 1- LED lamp with bracket; 2- telescopic ball; 3- concave hole; 4- fixing piece; 5- substrate; 6- card slot.

Detailed ways

In order for those skilled in the art to better understand the technical solution of the utility model, the LED connection and fixing device of the utility model, including the LED backlight of the LED connection and fixing device, adopts the LED backlight The liquid crystal display panel of the source, and the liquid crystal display device using the liquid crystal display panel are further described in detail.

An LED connection and fixing device for fixing an LED lamp on a substrate 5, which includes an LED lamp 1 with a bracket and a fixing piece 4 fixed on the substrate 5, the LED lamp 1 with a bracket and the The fixing part 4 is detachably connected.

Example 1:

As shown in Figure 1, in this embodiment, the fixing member 4 is provided with a card slot 6, and the LED lamp 1 with a bracket includes an LED lamp and a bracket integrated with the LED lamp, and the bracket can be engaged in the card slot 6.

As shown in FIG. 2 , the bracket in the LED lamp with bracket 1 is located at the bottom of the LED lamp, and the bracket includes two L-shaped pins, and the two L-shaped pins are symmetrically distributed in a figure-eight shape.

As shown in Figure 3, the slot 6 on the fixing part 4 is located at the top of the fixing part, the cross-sectional shape of the slot 6 is trapezoidal, and the size of the trapezoidal slot is the same as that of the two L-shaped pins. The dimensions are adapted so that the two L-shaped pins can be engaged in the trapezoidal slot to be connected with the fixing member 4 .

In this embodiment, the bottom of the fixing member 4 is welded on the substrate 5, and the substrate 5 is a PCB board. At the same time, in order to facilitate disassembly and maintenance, the bottom of the fixing member 4 is provided with a rectangular through hole, and the top of the rectangular through hole is connected with the lower bottom surface of the trapezoidal slot.

The LED connection and fixing device also includes a locking unit for fixing the two L-shaped pins in the slot 6 .

The locking unit includes several telescopic balls 2 arranged on the outer surfaces of the two L-shaped pins, and a spring arranged between each telescopic ball 2 and the outer surface where the telescopic balls 2 are located. When subjected to external force, the corresponding spring is compressed and retracted into the outer surface. Several concave holes 3 are distributed on the two slopes of the trapezoidal slot, and the size and quantity of the telescopic ball 2 are the same as the concave holes. 3 have the same size and number, and the position of each telescopic ball 2 on the outer surface of its corresponding pin corresponds to the position of a concave hole 3 on the slope of the trapezoidal slot, so that the two L-shaped pins After the feet are inserted into the trapezoidal slot on the fixing part 4, the elastic potential energy in the spring corresponding to each telescopic ball 2 is released, pushing the telescopic ball 2 into a corresponding concave hole 3 and contacting it .

In this embodiment, as shown in FIGS. 2 and 3 , two telescopic balls 2 and two concave holes 3 are used; the two telescopic balls 2 are symmetrically distributed on the outer surfaces of the two L-shaped pins. The top of the LED lamp 1 with a bracket contains chips and phosphors, each of the two L-shaped pins contains a metal wire, one end of the metal wire is connected to the positive electrode of the chip, and the other metal wire is connected to the positive electrode of the chip. One end of the wire is connected to the negative electrode of the chip, and the other end of the two metal wires is connected to the telescopic ball 2 on the pin where it is located; the two L-shaped pins are made of PC (Polycarbonate, polycarbonate) ester), the telescopic ball 2 and the fixing part 4 are made of metal; When in contact, the positive and negative poles of the LED lamp are connected to the positive and negative poles of the power supply.

In this embodiment, since the LED lamp with a bracket is detachably connected to the fixing part 4 fixed on the substrate 5, the LED lamp can be conveniently installed on the substrate 5 through the LED connection and fixing device, and can also be conveniently removed from the Disassemble on the substrate 5. Especially when multiple LED lamps need to be fixed on the substrate 5, the use of the detachable LED connection and fixing device shows its superiority, which not only improves the work efficiency when installing LED lamps, reduces labor costs, but also prevents disassembly of LED lamps. Cause damage to the substrate and LED lamps.

Fig. 4 shows a schematic structural diagram of a group of LED lamps with brackets engaged with a group of fixing parts welded on the substrate.

When using the LED connection and fixing device of the utility model to install the LED lamp, the installation and disassembly process is as follows:

When installing, push the two L-shaped pins of the LED lamp 1 with the bracket into the trapezoidal slot of the fixed piece 4 from the side of the fixed piece 4, and the two L-shaped pins located on the outer surface of the two L-shaped pins The telescopic ball 2 is retracted by the pressing force of the two inclined surfaces arranged symmetrically in the trapezoidal slot, and simultaneously compresses the springs corresponding to the two telescopic balls 2 to accumulate elastic potential energy in the springs. When the two telescopic balls 2 enter the At the positions corresponding to the two concave holes 3 on the two slopes of the trapezoidal slot, since the external force acting on the two telescopic balls 2 disappears, the elastic potential energy in the springs corresponding to the two telescopic balls 2 is released, Push the two telescopic balls 2 into the two concave holes 3 completely, so that the LED lamp is fixed in the direction parallel to the substrate 5, limiting the movement of the LED lamp in the direction parallel to the substrate 5, and at the same time Since the top of the fixing member 4 has a trapezoidal slot, the two slopes of the trapezoidal slot limit the movement of the LED lamp in a direction perpendicular to the substrate 5 , so that the LED lamp is engaged and fixed on the substrate 5 .

When dismounting, push the LED lamp 1 with the bracket on the side of the fixing part 4, at this time, the two telescopic balls 2 located on the outer sides of the two L-shaped pins of the LED lamp 1 with the bracket shrink after being squeezed by external force. Insert it into the outer surface of its corresponding pin, and continue to push the LED lamp 1 with bracket, then the LED lamp 1 with bracket is pushed out of the fixing part 4, that is, the disassembly of the LED lamp is completed. This disassembly method is simple and quick.

An LED backlight source includes the above-mentioned LED connection and fixing device.

A liquid crystal display panel adopts the above-mentioned LED backlight source.

A liquid crystal display device adopts the above-mentioned liquid crystal display panel.

Example 2:

The difference between this embodiment and embodiment 1 lies in: the locking unit is different.

The locking unit includes several convex contacts arranged on the outer surfaces of the two L-shaped pins, and the pins are made of flexible materials, and the two slopes of the trapezoidal slot are respectively There are several concave holes distributed, and the size and number of the convex contacts are the same as those of the concave holes, and the position of each convex contact on the outer surface of its corresponding pin is the same as that of a concave hole. The positions of the holes on the slope of the trapezoidal slot correspond to each other so that after the two L-shaped pins are snapped into the trapezoidal slot on the fixing member 4, each convex contact enters a corresponding concave hole in and contact with it.

In this embodiment, two convex contacts and two concave holes are used; the two convex contacts are symmetrically distributed on the outer surfaces of the two L-shaped pins. The top of the LED lamp with bracket 1 contains chips and phosphors, the two L-shaped pins are made of metal sheets, and the tops of the two metal sheets are respectively connected to the positive and negative electrodes in the chip, The convex contacts and the fixing part 4 are made of metal; the fixing part 4 is connected to the power supply on the substrate 5, when the two convex contacts enter the two concave holes and contact with them, the LED The positive and negative poles of the lamp are connected with the positive and negative poles of the power supply.

Other structures and functions in this embodiment are the same as in Embodiment 1, and will not be repeated here.

In the above disclosed embodiments, the LED connection and fixing device is used to engage and fix the LED lamp, and is applied to LED backlights, liquid crystal display panels and liquid crystal display devices. Here, it should be understood that the fixing device described in the present invention is not limited to snapping and fixing LED lamps, nor is it limited to be used in LED backlights, liquid crystal display panels and liquid crystal display devices, and can also be applied to other products, such as lighting products Among them, the fixing device can be used to engage and fix the lighting lamp, and any other devices that need to be engaged and fixed are included in the protection scope of the present utility model.

It can be understood that, the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these variations and improvements are also regarded as the protection scope of the present utility model.

Claims (14)

1. a LED connects fixture; Be used for the LED lamp is fixed on substrate (5); It is characterized in that comprise the LED lamp (1) of belt supporting frame and be fixed on the fixture (4) on the said substrate (5), the LED lamp (1) of said belt supporting frame removably is connected with said fixture (4).

2. LED according to claim 1 connects fixture; It is characterized in that; Have draw-in groove (6) on the said fixture (4), the LED lamp (1) of said belt supporting frame comprises LED lamp and the support that is connected as a single entity with the LED lamp, and said support can be fastened in the said draw-in groove (6).

3. LED according to claim 2 connects fixture, it is characterized in that the support in the LED lamp (1) of said belt supporting frame is positioned at the bottom of LED lamp, and said support comprises the pin of two L types, and splayed configuration was symmetrically distributed in said two L type pins were; Draw-in groove (6) on the said fixture (4) is positioned at the top of fixture; The cross sectional shape of said draw-in groove (6) is trapezoidal; The size of the size of said trapezoidal draw-in groove and said two L type pins adapts, and links together with fixture (4) thereby make said two L type pins can be fastened in the said trapezoidal draw-in groove.

4. LED according to claim 3 connects fixture, it is characterized in that said fixture (4) is welded on the substrate (5); The bottom of said fixture (4) has rectangular through-hole, and the top of said rectangular through-hole is connected with the bottom surface of said trapezoidal draw-in groove; Said substrate (5) adopts pcb board.

5. LED according to claim 3 connects fixture, it is characterized in that, said LED connects also to include in the fixture and is used for said two L type pins are fixed on the locking unit in the said trapezoidal draw-in groove.

6. LED according to claim 5 connects fixture; It is characterized in that; Said locking unit comprises several the flexible balls (2) on the lateral surface that is arranged on said two L type pins; And be arranged on the spring between the lateral surface at each flexible ball (2) and its place; Said flexible ball (2) compresses when receiving external force in its corresponding spring and this lateral surface of retraction, respectively is distributed with several shrinkage pools (3) on two inclined-planes of said trapezoidal draw-in groove, and the size of said flexible ball (2) is identical with the size and the quantity of said shrinkage pool (3) with quantity; And each flexible ball (2) the position on the lateral surface of its corresponding pin all with the inclined-plane of a shrinkage pool (3) at trapezoidal draw-in groove on the position corresponding; After making that said two L type pins snap in the trapezoidal draw-in groove on the fixture (4), the elastic potential energy in the pairing spring of each flexible ball (2) all is released, and promotes said flexible ball (2) and enters into a with it corresponding shrinkage pool (3) and be in contact with it.

7. LED according to claim 6 connects fixture, it is characterized in that, said flexible ball (2) all adopts two with shrinkage pool (3); Said two flexible balls (2) are symmetrically distributed on the lateral surface of two L type pins.

8. LED according to claim 7 connects fixture; It is characterized in that; The top of the LED lamp (1) of said belt supporting frame comprises chip and fluorescent material, respectively comprises a metal line in said two L type pins, and an end of a said metal line is connected with the positive electrode of said chip; One end of another metal line is connected with the negative electrode of said chip, and the other end of said two metal line respectively with the pin at its place on flexible ball (2) be connected; Said two L type pins adopt PC to process, and said flexible ball (2) and fixture (4) adopt metal to process; Said fixture (4) is connected with power supply, and when two flexible balls (2) entered into said two shrinkage pools (3) and are in contact with it, the both positive and negative polarity of LED lamp and the both positive and negative polarity of this power supply were connected.

9. LED according to claim 5 connects fixture; It is characterized in that; Said locking unit comprises several convex contacts on the lateral surface that is arranged on said two L type pins; And said pin adopts flexible material to process; Respectively be distributed with several shrinkage pools on two inclined-planes of said trapezoidal draw-in groove, the size of said convex contact is identical with the size and the quantity of said shrinkage pool with quantity, and each convex contact the position on the lateral surface of its corresponding pin all with the inclined-plane of shrinkage pool at trapezoidal draw-in groove on the position corresponding; After making that said two L type pins snap in the trapezoidal draw-in groove on the fixture (4), each convex contact all enters into a corresponding with it shrinkage pool and is in contact with it.

10. LED according to claim 9 connects fixture, it is characterized in that said convex contact and shrinkage pool all adopt two; Said two convex contacts are symmetrically distributed on the lateral surface of two L type pins.

11. LED according to claim 10 connects fixture; It is characterized in that; The top of the LED lamp (1) of said belt supporting frame comprises chip and fluorescent material; Said two L type pins adopt sheet metal to process, the top of said two sheet metals respectively with said chip in positive and negative electrode is connected, said convex contact and fixture (4) employing metal is processed; Said fixture (4) is connected with power supply, and when two convex contacts entered into said two shrinkage pools and are in contact with it, the both positive and negative polarity of LED lamp and the both positive and negative polarity of this power supply were connected.

12. a LED-backlit source is characterized in that, said LED-backlit source comprises that the described LED of one of claim 1-11 connects fixture.

13. a display panels is characterized in that, said display panels adopts the described LED-backlit of claim 12 source.

14. a liquid crystal indicator is characterized in that, said liquid crystal indicator adopts the described display panels of claim 13.

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