CN100580312C - Fixing device for the lamp tube of the backlight module - Google Patents

Abstract

The invention discloses a fixing device of a backlight module lamp strip, which aims at improving the problems caused by welding. The fixing device comprises a fixing base and a guide plate, wherein, one end of the fixing base is fixed on a circuit board, the other end is provided with a supporting slot to accommodate the lamp strip, and both sides of the supporting slot are respectively provided with a perforation, both perforations pass through the bottom part of the fixing base. The guide plate is provided with a wire slot and two contact ends, wherein, the wire slot is positioned on the supporting slot to accommodate the wires of the lamp strip, and the two contact ends pass through the two perforations and are connected with the circuit board. A packing guide slot is arranged between the wire slot and the support slot to provide a packing device which can be inserted from the outside of the fixing base, so the fixing function of the fixing device is more firmly.

Description

Fixing device for the lamp tube of the backlight module

technical field

The invention relates to a fixing device for a lamp tube of a backlight module.

Background technique

With the advancement of science and technology, various information products such as mobile phones, notebook computers, digital cameras, PDAs, LCD screens and other products are becoming more and more popular, which greatly increases the demand for LCD displays. Only the setting of a backlight source can be displayed, and the backlight module is mainly used as a backlight source of the liquid crystal display.

The backlight module includes a circuit board, at least one light source, a reflector, a diffusion plate, etc. The light source used today includes a cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp; CCFL), an external electrode fluorescent lamp (External Electrode Fluorescent Lamp) ; EEFL) or Light Emitted Diode (Light Emitted Diode; LED), wherein the circuit board of the backlight module using CCFL as the backlight is provided with a connector, which is used to control the electronic circuit of the CCFL backlight module, and converts the voltage into a high voltage. To drive the CCFL to light up the liquid crystal display.

Please refer to FIG. 1a, which is a schematic diagram of a fixing device for a traditional backlight module lamp tube. One end of the fixing seat 110 is fixed on the metal back plate 130, and the other end is provided with a support groove (not marked on the figure) for accommodating the lamp. The two ends of the lamp tube 100 each have a wire 101; please refer to FIG. terminal) is fixed on the circuit board 120 by surface mount (SMT), and can provide high voltage to drive the lamp tube 100. A perforation (not marked on the figure) is provided on the support groove, and the perforation penetrates to the bottom of the fixing seat 110. A power line 140 is connected to the wire 101 and the circuit board 120 through holes, and the wire 101 is connected to the power wire 140 by welding.

However, connecting the wire 101 and the power cord to the connector by welding will have the following disadvantages:

1. The labor cost of welding is high, and the welding method needs to be completed by manpower;

2. The lamp tube is not easy to disassemble and assemble, disassembly requires unsoldering, and assembly requires welding;

3. A power cord and connector are required for connection.

In view of this, in order to improve the above-mentioned problems caused by the existing welding technology, the present invention proposes a new fixing device for the lamp tube of the backlight module, through which the above-mentioned problems can be effectively solved.

Contents of the invention

The technical problem to be solved by the present invention is to provide a fixing device for a lamp tube of a backlight module. The fixing device of the present invention can improve the problems of inconvenient assembly and disassembly, high cost and the like caused by the welding fixing method of the backlight module in the prior art.

In order to achieve the above object, the present invention provides a fixing device for a lamp tube of a backlight module, wherein the backlight module has a circuit board, and the two ends of the lamp tube each have a wire, and the fixing device includes: a fixing base, one end of which is It is fixed on the circuit board, and its other end is provided with a support groove for accommodating the lamp tube, and each side of the support groove is provided with a perforation, and the two perforations pass through the fixing seat; and a guide piece has a wire A groove and two contact ends, wherein the wire groove is set on the support groove for accommodating the wire of the lamp tube, and the above two contact ends are connected to the circuit board through the through hole.

Moreover, in order to achieve the above object, the present invention provides a fixing device for the lamp tube of the backlight module, the backlight module has a circuit board, and each of the two ends of the lamp tubes has a wire, the feature is that the fixing device includes: A fixed base, these fixed bases are connected with each other, and one end of each fixed base is fixed on the circuit board, and the other end of each fixed base is provided with a support groove for accommodating these lamp tubes, and these A perforation is provided on both sides of the support groove, and the two perforations pass through the fixing seats; and a guide piece has a plurality of wire grooves and two contact ends, and the wire grooves are arranged on the support grooves for accommodating The wires of the lamp tubes, the above two contact ends are connected with the circuit board through the through holes.

The fixing device of the present invention includes at least one lamp tube, a fixing base and a circuit board, wherein two ends of the lamp tube each have a wire.

There is at least one connector in the circuit board, which can provide high voltage to drive the lamp tube. The connector is fixed on the circuit board. There is a metal backboard on the top of the circuit board. The metal backboard has an opening, and one end of the fixing seat passes through the opening and the circuit board. The other end of the fixing seat is provided with a support groove to accommodate the lamp tube. There is a perforation on both sides of the support groove, and the two perforations go through to the bottom of the fixing seat. A guide piece is provided in the fixing seat to connect the wire of the lamp tube and The circuit board, the guide piece has a wire groove and two contact ends, wherein the wire groove is set on the support groove to accommodate the wire of the lamp tube, the two contact ends are connected to the circuit board through two perforations, and the wire of the guide piece There is a shrapnel hook on both sides of the inner side of the groove to assist in fixing the wire; there is a tightening guide groove between the wire groove and the support groove, and the tightening guide groove is inserted from the outside of the fixing seat to provide a tightening device, and the wire is placed on the wire The grooves are already in contact with each other, the design of the shrapnel hook makes the contact more closely, and the purpose of the tightening device is to make the fixing effect of the fixing device more stable.

Using the fixing device of the present invention will make the fixing effect of the wire and the circuit board more stable, even when the backlight module is being transported or bumped, it will not cause the two to loosen, and the probability of poor contact is greatly reduced. In addition, the fixing device of the present invention is made of mechanical combination, which improves the high cost problem caused by welding and manual combination in the prior art. The fixing device of the present invention can make the lamp tube easy to disassemble and improve the disassembly The inconvenience of soldering and soldering is required, and the fixing device of the present invention uses the guide piece to extend to the circuit board, which improves the connection between the power line or the connector and the circuit board in the prior art.

Description of drawings

Through the following detailed description in conjunction with the accompanying drawings, the above contents and many advantages of the present invention can be easily understood, wherein:

Fig. 1a is a schematic diagram of a fixing device of a traditional backlight module lamp;

Fig. 1b is a side view of the fixing device of the lamp tube of the traditional backlight module;

Fig. 2a is a schematic diagram of the fixing device of the backlight module lamp tube of the present invention;

Fig. 2b is the first side view of the fixing device of the lamp tube of the backlight module of the present invention;

Fig. 2c is the second side view of the fixing device of the lamp tube of the backlight module of the present invention;

Fig. 2c' is a third side view of the fixing device of the backlight module lamp tube of the present invention;

Fig. 2d is a perspective view of the first embodiment of the fixing device of the present invention;

Fig. 2d' is a three-dimensional combined view of the first embodiment of the fixing device of the present invention;

Fig. 2e is a perspective view of the second embodiment of the fixing device of the present invention;

Fig. 2f is the external view of the third embodiment of the fixing device of the present invention;

Fig. 2g is an external view of the fourth embodiment of the fixing device of the present invention.

Among them, reference signs:

100, 200: light tube

101, 201: Wire

110, 210: fixed seat

211: wire duct

212: Pressing the guide groove

213: Compression device

214: Support groove

215: perforation

216: contact end

120, 220: circuit board

121, 221: Connector

130, 230: metal backplane

140: power cord

240: guide sheet

241: Shrapnel hook

Detailed ways

The invention relates to a fixing device for a lamp tube of a backlight module. The fixing device of the present invention can improve the problems of inconvenient disassembly and assembly, high cost and the like caused by the welding fixing method of the existing backlight module. A detailed description of the present invention is as follows.

Please refer to FIG. 2 a , which is a schematic view of the fixing device of the backlight module lamp tube of the present invention, including at least one lamp tube 200, a fixing seat 210 and a circuit board 220, wherein the lamp tube 200 is a cold cathode lamp tube, and its two ends are respectively It has a wire 201 .

Please refer to FIG. 2 b , which is a first side view of the fixing device of the backlight module lamp tube of the present invention, at least one connector 221 is arranged in the circuit board 220, which can provide high voltage to drive the lamp tube 200, and the connector 221 (female terminal) In order to be fixed on the circuit board 220 by means of surface mount (SMT), a metal back plate 230 is arranged above the circuit board 220, the metal back plate 230 has an opening, one end of the fixing base 210 is connected to the circuit board 220 through the opening, and the other end In order to accommodate the lamp tube 200 , a guide piece 240 is provided in the fixing seat 210 to connect the wire 201 of the lamp tube 200 and the circuit board 220 .

Please refer to FIG. 2c, which is a second side view of the fixing device for the light tube of the backlight module of the present invention. The other end of the fixing seat 210 is provided with a support groove 214 for accommodating the light tube 200. A perforation 215 is provided on both sides of the support groove 214. And two perforations 215 penetrate to the bottom of the fixing seat 210; the guide piece 240 has a wire groove 211 and two contact ends 216, wherein the wire groove 211 is set on the support groove 214 for accommodating the wire 201 of the lamp tube 200, two The end of the contact 216 is connected to the circuit board 220 through two through holes 215. In addition, please refer to FIG. A shrapnel hook 241 is provided to assist in fixing the wire 201; there is a tightening guide groove 212 between the wire groove 211 and the support groove 214, and the tightening guide groove 212 provides a tightening device (not shown in the figure) by fixing The outside of the seat 210 is inserted.

Please refer to FIG. 2d, which is a perspective view of the first embodiment of the fixing device of the present invention. A metal back plate 230 is arranged above the circuit board 220. The metal back plate 230 has an opening, and one end of the fixing seat 210 passes through the opening and is connected to the circuit board 220. There is a perforation 215 on both sides of the supporting groove 214 at the other end of the fixing seat 210. The two contact ends 216 of the guide piece 240 will be connected with the circuit board 220 through the two throughholes 215, and the wire groove 211 of the guide piece 240 is located on the supporting groove 214. , used to accommodate the wire 201 of the lamp tube 200; there is a tightening guide groove 212 between the wire groove 211 and the support groove 214, and the tightening guide groove 212 is inserted from the outside of the fixing seat 210 to provide the tightening device 213; please refer to Fig. 2d' is a three-dimensional combined view of the first embodiment of the fixing device of the present invention. The wires 201 are placed in the wire groove 211 and are already in contact with each other. The design of the elastic hook 241 makes the contact more closely. The purpose of the pressing device 213 In order to make the fixing function of the fixing device more stable, the probability of poor contact of the backlight module during transportation or when it is bumped is extremely low.

Please refer to FIG. 2e, which is a perspective view of the second embodiment of the fixing device of the present invention. Its components are roughly the same as those of the first embodiment. Same as the first embodiment, the L-shaped design of the two contact ends 216 increases the contact area with the circuit board 220 , further reducing the probability of poor contact between the guide piece 240 and the circuit board 220 .

Please refer to FIG. 2f, which is an appearance view of the third embodiment of the fixing device of the present invention, and its components are substantially the same as those of the first embodiment, except that the fixing seat 210 is a one-piece fixing seat with multiple supporting grooves; and The guide piece 240 has a plurality of wire grooves 211 and two contact ends (not marked in the figure); one end of the fixing base 210 is fixed on the circuit board 220, and the other end is provided with a plurality of supporting grooves (not marked in the figure) for accommodating These lamp tubes 200 are placed, and the wire grooves 211 are arranged on the support grooves for accommodating the wires (not shown in the figure) of a plurality of lamp tubes 200. The operation mode is the same as that of the first embodiment, the wires There is a tightening guide groove (not shown in the figure) between the groove 211 and the support groove, and each tightening guide groove is to provide each pressing device 213 to be inserted from the outside of the fixing seat 210, so that the fixing effect of the fixing device is more stable.

Please refer to FIG. 2g, which is an appearance view of the fourth embodiment of the fixing device of the present invention. Its components and actuation methods are roughly the same as those of the third embodiment. Tighten the inside of the guide groove (not marked in the figure), so that the fixing effect of the fixing device is more stable.

The light tube fixing device for the backlight module proposed by the present invention connects the wire 201 and the circuit board 220 by combining the guide piece 240, which can effectively improve the following shortcomings of the existing welding technology:

1. The fixing device of the present invention is assembled mechanically, which improves the high cost problem caused by manual assembly by welding in the prior art;

2. The fixing device of the present invention can facilitate the disassembly and assembly of the lamp tube, and improve the inconvenience of disassembly and welding in the prior art;

3. The fixing device of the present invention uses the guide piece to extend to the circuit board, which improves the prior art and requires a power cord or a connector to be connected to the circuit board.

Of course, using the fixing device of the present invention will make the fixing effect of the wire and the circuit board more stable. Even when the backlight module is being transported or bumped, the two will not be loosened, and the probability of poor contact will be greatly reduced.

Although the present invention has been described above with preferred examples, it is not intended to limit the spirit and entities of the present invention to the above-mentioned examples. Those skilled in the art can easily understand and utilize other components or methods to produce the same effect. Therefore, modifications made without departing from the spirit and scope of the present invention should be included in the scope of the following claims.

Claims (12)

1. A fixing device for a backlight module lamp tube, wherein the backlight module has a circuit board, and each of the two ends of the lamp tube has a lead, it is characterized in that the fixing device includes: A fixing base, one end of which is fixed on the circuit board, and the other end is provided with a supporting groove for accommodating the light tube, and the supporting groove is provided with a perforation on both sides, and the two perforating holes go through the fixing base; and A guide piece has a wire groove and two contact ends, wherein the wire groove is set on the support groove for accommodating the wire of the lamp tube, and the above two contact ends are connected to the circuit board through the through hole; Wherein, a pressing guide groove is provided between the fixing seat and the guide piece, and the pressing guide groove provides a pressing device to be inserted from the outside of the fixing seat. 2 . The fixing device according to claim 1 , wherein at least one elastic clip hook is provided on the wire groove of the guide piece. 3 . 3. The fixing device according to claim 1, further comprising a tightening device inserted into the tightening guide groove from the outside of the fixing base. 4. The fixing device according to claim 3, wherein the pressing device is a U-shaped design. 5. The fixing device according to claim 1, wherein the fixing seat is made of plastic material. 6. The fixing device according to claim 1, wherein the light tube is a cold cathode light tube. 7 . The fixing device according to claim 1 , wherein the fixing base is fixed on the circuit board by using a surface-mounting technique. 8. The fixing device according to claim 1, wherein at least one connector is disposed on the circuit board. 9. The fixing device according to claim 1, wherein a reflective material is attached on the surface of the fixing base. 10 . The fixing device according to claim 1 , wherein a metal backboard is disposed above the circuit board, the metal backboard has an opening, and the fixing base is connected to the circuit board through the opening. 11 . 11. A fixing device for a light tube of a backlight module, the backlight module has a circuit board, and each of the two ends of the light tubes has a wire, it is characterized in that the fixing device comprises: A plurality of fixing bases, these fixing bases are connected with each other, and one end of each fixing base is fixed on the circuit board, the other end of each fixing base is provided with a supporting groove for accommodating the lamp tubes, and the A perforation is provided on both sides of the support groove, and the two perforations pass through the fixing seats; and A guide sheet has a plurality of wire grooves and two contact ends, the wire grooves are arranged on the support grooves for accommodating the wires of the lamp tubes, the above two contact ends are connected to the circuit board through the through holes connect; Wherein, a tightening guide groove is provided between each fixing seat and each wire groove, and a tightening device is inserted into the tightening guide groove. 12. The fixing device according to claim 11, characterized in that, the pressing device is arranged in any two pressing guide grooves.

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