CN101509642B - Lamp socket and backlight module - Google Patents

Abstract

The invention provides a lamp tube socket, which is suitable for a lamp tube with a lamp body and a guide wire at the end of the lamp body. The lamp socket of the present invention includes a lamp body fixing part, a pair of connecting parts and a guide wire fixing part. The lamp body fixing part includes a pair of first clamping parts and an accommodating space between the pair of first clamping parts. The lamp body of the lamp tube can be pressed into the accommodating space to be clamped by the pair of first clamping parts. The pair of connecting parts respectively extend backward from the rear ends of the pair of first clamping parts of the lamp body fixture. The guide wire fixing part includes a pair of second clamping parts respectively extending backward from the rear ends of the pair of connecting parts, and the pair of second clamping parts are used to clamp the guide wire of the lamp tube.

Description

Lamp socket and backlight module

technical field

The invention relates to a lamp socket and a backlight module using the lamp socket.

Background technique

Because the cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp, CCFL) has the advantages of small tube, simple structure, small temperature rise of the tube surface, high surface brightness of the tube, easy processing into various shapes, long service life and uniform light emission, etc., Therefore, so far, cold-cathode fluorescent tubes have been used in large-size liquid crystal displays (Liquid Crystal Display, LCD), LCD TVs (LCD TV), lighting equipment, and backlights for electronic equipment such as notebook computers.

In order to make the CCFLs emit light, the CCFLs need to be electrically connected to the lamp drive circuit (Inverter) in the backlight module to receive the high-voltage power supply provided by the lamp drive circuit to prompt the lamps to generate high-voltage discharge and emit light. In the prior art, several ways of connecting the lamp tube and the driving circuit have been disclosed, which will be introduced as follows. Please refer to FIG. 1 , which shows a schematic diagram of an assembly method of a light tube 1 in a backlight module in the prior art.

As shown in Figure 1, the end of the lamp body 10 is coated with tin material 11 by welding, and the tin material 11 needs to be welded together with the lamp guide wire (covered in tin material) at the end of the lamp body 10 to conduction with each other, and then press the end of the lamp tube coated with tin material into the conductive clamping member 13 for clamping. The clamping member 13 is fixed on the circuit board 12 by welding and is connected to the lamp driving circuit, so that the high voltage power provided by the lamp driving circuit can be supplied to the lamp guide wire to make the lamp discharge and emit light. However, the disadvantage of this method is that the cost of welding the tin material to the end of the lamp tube is high and not environmentally friendly.

In addition to coating the tin material, the prior art also discloses that a conductive sleeve (Cap) is fitted on the end of the lamp tube. The conductive sleeve is welded together with the guide wire by laser melting. The lamp tube with the conductive sleeve can be matched and assembled to a lamp tube socket (socket) to be electrically connected with the lamp tube driving circuit. However, the disadvantage of this method is that the material of the conductive sleeve and the laser melting process need to consume a certain amount of cost.

Please refer to FIG. 2 , which is a schematic diagram of another assembly method of the light tube 2 in the backlight module in the prior art. Wherein, the end of the lamp body 20 has a guide wire 21 . Reference numeral 24 represents an extended conductive portion, the inner end edge of which is upwardly formed with a plurality of lamp body interposition portions 22 , and the outer end edge is upwardly formed with a plurality of guide wire interposition portions 23 . When assembling the lamp tube, the lamp body 20 and the guide wire 21 need to be pressed into the lamp body clamping portion 22 and the guide wire clamping portion 23 respectively to be clamped. However, because the guide wire 21 is a relatively fragile structure, if the force is improperly applied during the pressing process, problems such as cracks in the guide wire 21 itself or breakage of the joint between the guide wire 21 and the lamp body 20 may easily occur. Will cause damage to the lamp tube.

Contents of the invention

An object of the present invention is to provide a lamp socket and a backlight module using the lamp socket.

The first embodiment according to the present invention relates to a lamp socket. A lamp tube has a lamp body and a guide wire at the end of the lamp body. The lamp socket of this embodiment includes a lamp body fixing part, a pair of connecting parts and a guide wire fixing part.

The lamp body fixing part includes a pair of first clamping parts and an accommodating space between the pair of first clamping parts. The lamp body of the lamp tube can be pressed into the accommodating space to be clamped by the pair of first clamping parts. The pair of connecting parts respectively extend backward from the rear ends of the pair of first clamping parts of the lamp body fixture. The guide wire fixing part includes a pair of second clamping parts respectively extending backward from the rear ends of the pair of connecting parts, and the pair of second clamping parts are used to clamp the guide wire of the lamp tube.

Further, the lamp body fixing part of the lamp socket of this embodiment may include a pair of necks. The pair of necks extend upwards from the tops of the pair of first clamping parts, and the pair of necks are arranged closer to each other relative to the pair of first clamping parts, so as to determine the opening and closing of the pair of second clamping parts degree. In a specific embodiment, each of the lamp body fixing part and the guide wire fixing part may include a pair of guiding parts. The guiding part of the lamp body fixing part extends upwards and outwards from the top of the pair of necks to receive the lamp body and guide the pair of necks; the guiding part of the guide wire fixing part goes upwards from the top of the pair of second clamping parts And extend outwards to accept the guide wire and guide the pair of second clamping parts. Wherein, the pair of connecting portions extend from the pair of first clamping portions, the pair of necks and the rear ends of the pair of guiding portions of the lamp body fixture.

Thereby, when the lamp body of the lamp tube is pressed into the accommodating space between the pair of first clamping parts, the pair of necks will be stretched to drive the pair of connecting parts to stretch outwards, thereby being stretched apart. The pair of connecting parts can make the pair of first clamping parts and the pair of second clamping parts open synchronously to accommodate the lamp body and guide wire of the lamp tube respectively. After the lamp body is pressed into the accommodating space, the pair of first clamping parts and the pair of second clamping parts are synchronously closed to clamp the lamp body and the guide wire of the lamp tube.

According to the second embodiment of the present invention, it relates to a backlight module using the lamp socket of the above-mentioned first embodiment.

The backlight module includes a light tube, a circuit board and a light tube socket. The lamp tube has a lamp body and a guide wire at the end of the lamp body. A lamp tube driving circuit is formed on the circuit board, and the lamp tube socket is arranged on the circuit board and electrically connected with the lamp tube driving circuit.

The lamp body fixing part includes a pair of first clamping parts and an accommodating space between the pair of first clamping parts. The lamp body of the lamp tube can be pressed into the accommodating space to be clamped by the pair of first clamping parts. The pair of connecting parts respectively extend backward from the rear ends of the pair of first clamping parts of the lamp body fixture. The guide wire fixing part includes a pair of second clamping parts respectively extending backward from the rear ends of the pair of connecting parts, and the pair of second clamping parts are used to clamp the guide wire of the lamp tube to conduct with the lamp tube driving circuit.

According to the third embodiment of the present invention, it relates to a backlight module using the lamp socket of the above-mentioned first embodiment.

The backlight module includes a lamp tube, a circuit board, a first connector, a second connector and a lamp socket. The lamp tube has a lamp body and a guide wire at the end of the lamp body. A lamp driving circuit is formed on the circuit board, and the first connector is arranged on the circuit board and electrically connected with the lamp driving circuit. The second connector can be plugged into the first connector, and the lamp socket is fixed on the second connector and electrically connected with the second connector.

The lamp body fixing part includes a pair of first clamping parts and an accommodating space between the pair of first clamping parts. The lamp body of the lamp tube can be pressed into the accommodating space to be clamped by the pair of first clamping parts. The pair of connecting parts respectively extend backward from the rear ends of the pair of first clamping parts of the lamp body fixture. The guide wire fixing part includes a pair of second clamping parts respectively extending backward from the rear ends of the pair of connecting parts, and the pair of second clamping parts are used to clamp the guide wire of the lamp tube to conduct with the lamp tube driving circuit.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

Description of drawings

FIG. 1 shows a schematic diagram of an assembly method of a light tube in a backlight module in the prior art;

FIG. 2 is a schematic diagram illustrating an assembly method of lamp tubes in another backlight module in the prior art;

FIG. 3A shows a schematic diagram of a lamp socket according to a first embodiment of the present invention;

FIG. 3B and FIG. 3C are schematic diagrams showing the process of assembling the lamp tube in the lamp socket and after assembly;

FIG. 4 shows a schematic diagram of a backlight module according to a second embodiment of the present invention;

FIG. 5A shows a schematic diagram of a backlight module according to a third embodiment of the present invention;

FIG. 5B shows an enlarged view of the lamp socket and the second connector in FIG. 5A;

FIG. 6A is a schematic diagram showing that the lamp socket further includes an extending lead portion;

FIG. 6B is a schematic diagram of the combination of the lamp socket and the connector in FIG. 6A .

Among them, reference signs

1, 2, 4: lamp tube 10, 20, 40: lamp body

21, 42: guide wire 11: tin material

12: Circuit board 13: Holder

22: Lamp body holding part 23: Guide wire holding part

24: Extended conductive part

3: Lamp socket 30: Lamp body fixture

31: Connecting part 32: Guide wire fixing piece

33: Extended leading part

300: First holding part 302: Neck

304, 322: Guide Department 306: Carrying Platform

320: Second holding part 330: Elastic hook

5, 8: circuit board 6, 7: connector

60: Plug 70: Slot

Detailed ways

Please refer to Figure 3A to Figure 3C. FIG. 3A is a schematic diagram of the lamp socket 3 according to the first embodiment of the present invention. FIG. 3B is a schematic view showing the process of assembling the lamp tube 4 into the lamp socket 3 . FIG. 3C is a schematic diagram of the light tube assembled in the light tube socket 3 . In practical application, the lamp socket 3 of the present invention can be suitable for cold cathode fluorescent lamps. The CCFL has a lamp body 40 and a guide wire 42 at the end of the lamp body, as shown in FIG. 3B .

As shown in FIG. 3A , the lamp socket 3 includes a lamp body fixing part 30 , a pair of connecting parts 31 and a guide wire fixing part 32 . It should be noted that the lamp socket 3 of the present invention can be made of a conductive material, such as metal. In a preferred embodiment, copper is selected as the metal material because of its good electrical conductivity and low cost. In addition, in practical applications, the lamp body fixing part 30 , the pair of connecting parts 31 and the guide wire fixing part 32 can be integrally formed, so as to have better structural strength and elasticity.

The lamp body fixture 30 includes a pair of first clamping parts 300 and a carrying platform 306 , wherein the carrying platform 306 is connected between the bottoms of the pair of first clamping parts 300 . The pair of first clamping parts 300 and the carrying platform 306 form an accommodating space. The lamp body 40 of the lamp tube can be pressed into the accommodating space to be clamped by the pair of first holding portions 300 , and the lamp body can be carried on the carrying platform 306 .

In practice, the shape of the pair of first clamping portions 300 can be designed in accordance with the shape of the lamp body 40 . For example, since the CCFL tube has a cylindrical lamp body, the pair of first clamping portions 300 can be designed to have an arc-shaped appearance, so that they can tightly clamp the lamp body 40 .

As shown in FIG. 3A , the pair of connecting portions 31 respectively extend rearwardly from the rear ends of the pair of first clamping portions 300 of the lamp body fixing member 30 . The guide wire fixing member 32 includes a pair of second clamping portions 320 for clamping the guide wire 42 of the lamp tube, and the pair of second clamping portions 320 respectively extend backward from the rear ends of the pair of connecting portions 31 .

Further, the lamp body fixing member 30 of the lamp socket 3 of the present invention may include a pair of neck portions 302 . The pair of necks 302 extend upwards from the top of the pair of first clamping portions 300 of the lamp body fixing member 30 , and the pair of necks 302 are arranged closer to each other than the pair of first clamping portions 300 . It should be noted that the pair of necks 302 can be used to determine the opening degree of the pair of second clamping parts 320 .

In a specific embodiment, each of the lamp body fixing part 30 and the wire fixing part 32 may include a pair of guiding parts ( 304 , 322 ). The guiding portion 304 of the lamp body fixing member 30 extends upwards and outwards from the top of the pair of necks 302 for receiving the lamp body 40 and guiding the pair of necks 302 . The guiding portion 322 of the guide wire fixing member 32 extends upward and outward from the top of the pair of second holding portions 320 for receiving the guide wire 42 and guiding the pair of second holding portions 320 . Specifically, the pair of connecting portions 31 in this embodiment extend from the rear ends of the pair of first clamping portions 300 , the pair of necks 302 and the pair of guiding portions 304 of the lamp body fixture 30 , and the pair of The rear end of the connecting portion 31 is connected to the pair of second clamping portions 320 and the pair of guiding portions 322 of the guide wire fixing member 32 .

The above paragraphs mainly describe the structure and function of each part in the lamp socket of the present invention. How to assemble the lamp 4 to the lamp socket is described in detail as follows.

As shown in Figure 3B, when the lamp body 40 of the lamp tube is pressed into the position of the pair of necks 302 from above the lamp body fixing member 30, the pair of necks 302 will be stretched by the lamp body 40, so that the pair of first A clamping portion 300 is also stretched to allow the lamp body 40 to be pressed into the accommodation space between the pair of first clamping portions 300 . Since the pair of connecting parts 31 are connected between the pair of first clamping parts 300 and the pair of second clamping parts 320, after the neck 302 is stretched, it will drive the pair of connecting parts 31 to stretch outwards, and the stretched The pair of connecting parts 31 can make the pair of first clamping parts 300 and the pair of second clamping parts 320 open synchronously to accommodate the lamp body and guide wire of the lamp tube respectively.

After the lamp body is completely pressed into the accommodating space, since the pair of necks 302 can no longer be stretched by the lamp body, the necks 302 can return to the unstretched state, so that the pair of first clamping parts 300 and The pair of second pinching portions 320 are jointly closed inwardly to pinch the lamp body and the guide wire of the lamp tube synchronously.

It should be noted that, the closer the pair of necks 302 are to each other, the greater the extent to which the pair of necks 302 are stretched by the lamp body, and similarly, the greater the extent to which the pair of second clamping parts 320 are stretched. big. Therefore, as mentioned above, the pair of necks 302 is used to determine the opening degree of the pair of second clamping parts 320 . In terms of design, the distance between the pair of necks 302 can be arranged according to the size of the guide wire (determining the required opening degree).

It should be emphasized that the lamp socket of the present invention has the following advantages:

1. Since the pair of connecting parts can make the pair of first clamping parts and the pair of second clamping parts open synchronously, it is only necessary to apply force to the lamp body (no need to apply force to the guide wire) to press into the pair of first clamping parts Then, the guide wire can enter the pair of second holding parts and be held. In this way, the guide wire can avoid damage due to direct force as described in the prior art;

2. The guide wire can be directly held by the pair of second holding parts to conduct with each other, so the tin material or sleeve used in the prior art can be omitted, which has the advantages of saving cost and simplifying the process; and

3. Since the pair of connecting parts can make the pair of first holding parts and the pair of second holding parts hold or release the lamp body and the guide wire synchronously, the efficiency of assembly and maintenance can be improved.

See Figure 4. FIG. 4 is a schematic diagram of a backlight module according to a second embodiment of the present invention.

As shown in FIG. 4 , the backlight module may include a circuit board 5 , a plurality of lamp tubes 4 and a plurality of lamp sockets 3 for combining the lamp tubes. In practical application, these lamp tubes 4 may be CCFL tubes. Each lamp tube 4 has a lamp body 40 and a guide wire 42 located at the end of the lamp body, and the end of the lamp body and the guide wire can be combined to the corresponding lamp socket 3 . It should be noted that the backlight module of this embodiment utilizes the lamp socket 3 of the first embodiment.

A lamp driving circuit is formed on the circuit board 5 , and the lamp sockets 3 are arranged on the circuit board 5 and electrically connected with the lamp driving circuit. It should be noted that the lamp sockets 3 in FIG. 4 are electrically connected with the lamp driving circuit on the circuit board 5 by welding. In short, the lamp socket 3 of the first embodiment can be applied to a backlight module with a capacitor-balanced circuit board (C-balance board).

For the structure and function of each part in the lamp socket, please refer to the previous narration and accompanying drawings again, and will not repeat them here. Basically, when the pair of second clamping parts of the lamp socket 3 pinch the guide wire of the lamp tube, the guide wire can be connected with the lamp tube driving circuit so that the lamp tube generates discharge and emits light.

See Figure 5A. FIG. 5A is a schematic diagram of a backlight module according to a third embodiment of the present invention.

As shown in FIG. 5A , the backlight module includes a circuit board 8 , a plurality of lamp tubes 4 , a plurality of first connectors 6 , a plurality of second connectors 7 and a plurality of lamp sockets 3 . FIG. 5B is an enlarged view of the lamp socket 3 and the second connector 7 in FIG. 5A . In practical applications, these tubes may be cold cathode fluorescent tubes. It should be noted that the backlight module of this embodiment utilizes the lamp socket 3 of the first embodiment.

A lamp driving circuit is formed on the circuit board 8 , and the first connector 6 is disposed on the circuit board 8 and electrically connected with the lamp driving circuit. The first connector 6 has a plug 60 , and the second connector 7 has a matching slot 70 , so the second connector 7 can be mated and plugged into the first connector 6 . The lamp socket 3 is fixed to the second connector 7 and electrically connected thereto.

For the structure and function of each part in the lamp socket 3, please refer to the previous narration and accompanying drawings again, and will not repeat them here. Basically, when the pair of second clamping parts of the lamp socket 3 hold the guide wire of the lamp, the guide wire can be connected with the lamp drive circuit through the first connector 6 and the second connector 7 to make the lamp generate The discharge glows.

As shown in FIG. 6A , in this embodiment, the lamp socket 3 can further include an extended guide portion 33 , and the extended guide portion 33 can integrally extend downward from the carrying platform 306 of the lamp body fixing member 30 . In terms of application, the extending guiding portion 33 can be passed through the second connector, and the second connector is electrically connected to the first connector through the extending guiding portion 33 .

In a specific embodiment, the end of the extending guiding portion 33 has at least one elastic hook 330 , such as two elastic hooks 330 shown in FIG. 6A . See Figure 6B. FIG. 6B is a schematic diagram of the combination of the lamp socket 3 and the second connector 7 in FIG. 6A . As shown in FIG. 6B , the two elastic hooks 330 are engaged and buckled in the second connector 7 and face the opening of the slot 70 . Thereby, the plug 60 of the first connector 6 can interfere with the two elastic hooks 330 after being inserted into the slot 70 of the second connector 7 , so that the lamp socket 3 is connected to the lamp driving circuit.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (14)

1. A lamp socket, characterized in that it comprises: A first fixing part has a pair of first clamping parts and an accommodating space between the pair of first clamping parts; a connecting portion integrally extending backward from the rear ends of the pair of first clamping portions; a second fixing piece integrally extending backward from the rear end of the connecting portion and forming a pair of second clamping portions; Wherein, the first clamping part and the second clamping part are opened and closed synchronously. 2. The lamp socket according to claim 1, wherein the first fixing member further comprises: A pair of necks extend upwards from the tops of the pair of first clamping parts, and the pair of necks are arranged closer to each other relative to the pair of first clamping parts, and are used to determine a sheet of the pair of second clamping parts. degree of opening. 3. The lamp socket according to claim 2, wherein the first fixing member further comprises: A pair of guiding parts extend upwards and outwards from the tops of the pair of necks. 4 . The lamp socket according to claim 3 , wherein the connection portion is formed by simultaneously extending the rear ends of the pair of first holding portions, the pair of necks and the pair of guiding portions. 5. The lamp socket according to claim 1, wherein the first fixing member further comprises: A carrying platform is connected between the bottoms of the pair of first clamping parts. 6. The lamp socket according to claim 1, wherein the second fixing member further comprises: A pair of guiding parts extend upwards and outwards from the tops of the pair of second clamping parts. 7. The lamp socket according to claim 1, wherein the lamp socket is made of a conductive material. 8 . The lamp socket according to claim 1 , wherein the first fixing part, the connecting part and the second fixing part are integrally formed. 9. A backlight module, characterized in that it comprises: A lamp tube having a lamp body and a guide wire at the end of the lamp body; a circuit board on which a lamp driving circuit is formed; and A light tube socket is arranged on the circuit board and electrically connected with the light tube driving circuit, and the light tube socket includes: A lamp body fixing part, including a pair of first clamping parts and an accommodating space between the pair of first clamping parts, the lamp body is pressed into the accommodating space to be clamped by the pair of first clamping parts; a pair of connecting parts respectively extending backward from the rear ends of the pair of first clamping parts of the lamp body fixture; and A guide wire fixing piece, including a pair of second clamping parts respectively extending backward from the rear ends of the pair of connecting parts, and the pair of second clamping parts are used to clamp the guide wire to conduct with the lamp tube driving circuit; Wherein, the first clamping part and the second clamping part are opened and closed synchronously. 10. The backlight module according to claim 9, wherein the lamp socket is electrically connected to the lamp driving circuit on the circuit board by soldering. 11 . The backlight module according to claim 9 , wherein the shape of the pair of first holding portions matches the shape of the lamp body. 12. A backlight module, characterized in that it comprises: A lamp tube having a lamp body and a guide wire at the end of the lamp body; A circuit board on which a lamp driving circuit is formed; a first connector, arranged on the circuit board and electrically connected with the lamp driving circuit; a second connector matingly plugged into the first connector; and A lamp socket, fixed to the second connector and electrically connected to the second connector, the lamp socket includes: A lamp body fixing part, including a pair of first clamping parts and an accommodating space between the pair of first clamping parts, the lamp body is pressed into the accommodating space to be clamped by the pair of first clamping parts; a pair of connecting parts respectively extending backward from the rear ends of the pair of first clamping parts of the lamp body fixture; and A guide wire fixing piece, including a pair of second clamping parts respectively extending backward from the rear ends of the pair of connecting parts, and the pair of second clamping parts are used to clamp the guide wire to conduct with the lamp tube driving circuit; Wherein, the first clamping part and the second clamping part are opened and closed synchronously. 13 . The backlight module according to claim 12 , wherein the lamp socket further comprises an extension guide portion, which is passed through the second connector, and the second connector passes through the extension guide portion electrically connected with the first connector. 14. The backlight module according to claim 13, wherein the extending guide portion has at least one elastic hook and the second connector has a slot, and the at least one elastic hook is buckled on the second connector. The opening in the connector facing the socket.

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