CN209785436U - Side income formula lamp strip and backlight unit's mounting structure - Google Patents

Abstract

The utility model discloses a side-entering light bar, which comprises a PCB (printed circuit board) 11, a light source 12 and a connecting wire 13, wherein the light source 12 is electrically connected to the front side of the PCB 11; the PCB board (11) is provided with a through hole (111), the connecting wire (13) penetrates through the through hole (111) from the front side of the PCB board (11) to the back side of the PCB board (11) and is electrically connected to a circuit on the back side of the PCB board (11). In addition, the mounting structure of the lamp strip and the backlight module comprises the lateral entrance type lamp strip (1) and a back plate (2), the lateral entrance type lamp strip (1) is fixed on the inner side face of the back plate (2), and the connecting lines (13) are arranged close to one inner side of the back plate (2) and led out of the back plate (2) from the holes (21) of the back plate (2). The utility model is used for backlight unit.

Description

Side income formula lamp strip and backlight unit's mounting structure

Technical Field

The utility model relates to a backlight technical field, concretely relates to side income formula lamp strip and backlight unit's mounting structure.

Background

The backlight module converts point light sources into surface light sources, and the point light sources are generally provided by the light bar, so the light bar is an important component of the backlight module, and the reliability of the light bar directly influences the use of the backlight module. The lamp strip comprises light source and PCB, must set up the connecting wire in addition and be connected lamp strip and power and just can realize the circular telegram and give out light, and general connecting wire lug connection is positive at PCB, and the position that connecting wire and lamp strip PCB are connected is more fragile, and easy breaking occurs, influences the reliability of lamp strip. And the connecting wire must buckle the transition when the lamp strip is installed in the backplate, just can guarantee that the connecting wire is difficult for the fracture, but the transition of buckling needs to occupy the module inner space, is difficult to be suitable for to the backlight unit that the space ratio is more limited.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem to the not enough in the background art, provide the side income formula lamp strip that can solve and lamp strip and backlight unit's mounting structure.

In order to solve the technical problem, the technical scheme of the utility model is that: a side-entry light bar comprises a PCB, a light source and a connecting wire, wherein the light source is electrically connected to the front surface of the PCB; the PCB is provided with a through hole, the connecting wire penetrates through the through hole from the front side of the PCB to the back side of the PCB and is electrically connected to a circuit on the back side of the PCB.

Furthermore, an insulating heat-conducting double-sided adhesive tape is bonded on the back surface of the PCB.

Furthermore, a sheath is sleeved on the connecting wire.

Furthermore, the tail end of the connecting wire is electrically connected with a terminal.

In addition, still disclose a mounting structure of lamp strip and backlight unit, including aforementioned side income formula lamp strip and backplate, the side income formula lamp strip is fixed on the medial surface of backplate, the connecting wire is arranged by one side next to the backplate in to draw forth the backplate outside from the trompil of backplate.

Furthermore, the LED backlight module also comprises a light guide plate, and the connecting lines and the light guide plate are arranged on the inner side of the back plate in parallel.

Furthermore, the light guide plate is provided with unfilled corners to dodge the connecting wire from the leading-out position of lateral light bar.

Furthermore, a wire slot is formed in the inner side of the back plate, and the connecting wire is arranged in the wire slot; the light guide plate is arranged above the connecting wire.

Furthermore, insulating protective glue is pasted around the opening.

The utility model discloses a beneficial effect that side income formula lamp strip realized mainly has following several points: owing to be provided with the through-hole, fix the connecting wire at the lamp strip back to it is positive to lead to the lamp strip through the through-hole, makes the through-hole on the lamp strip play the fixed action to the connecting wire, and the junction direct stress of connecting wire and lamp strip when avoiding rocking the connecting wire, thereby protected the hookup location of fragile connecting wire and lamp strip, avoided lamp strip line fracture to influence the reliability of lamp strip and module.

The utility model discloses the beneficial effect that lamp strip and backlight unit's mounting structure realized mainly has following several points: the structure that the connecting wire passes through the through-hole to be connected to the lamp strip back is passed through in the adoption, and the connecting wire is fixed very stably on the lamp strip, therefore when the lamp strip is installed on the backplate, can not be with very big transition bending region to reduce the space that the connecting wire occupy, adapt to the backlight unit of space limitation.

Drawings

Fig. 1 is a schematic front view of a side-in light bar according to an embodiment of the present invention;

Fig. 2 is a schematic view of a back structure of a side-in light bar in an embodiment of the present invention;

Fig. 3 is a schematic front view of a mounting structure of a side-in light bar and a back plate in the second embodiment of the present invention;

Fig. 4 is a schematic back view of a mounting structure of a side-entry light bar and a back plate in the second embodiment of the present invention;

Fig. 5 is a schematic structural view of a light guide plate according to a second embodiment of the present invention.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.

Detailed Description

To facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.

Example one

referring to fig. 1 and 2, a side-entry light bar 1 is used as a light source of a side-entry backlight module. The lateral light bar 1 comprises a PCB (printed circuit board) 11, a light source 12 and a connecting wire 13, wherein the PCB 11 is a supporting structure of the whole light bar and is also a circuit structure of the lateral light bar 1, and the PCB can be a soft FPC (flexible printed circuit) board and can also be a conventional hard PCB. The light source 12 is electrically connected to the front surface of the PCB 11, and the light source may be an LED, such as a conventional surface mount LED, and the LED may be soldered to a corresponding pad of the PCB by soldering.

Referring to fig. 1, the PCB 11 is provided with at least two through holes 111 for inserting connection wires, and a plurality of through holes 111 are required to be provided if the light bar has a plurality of independently controlled circuits. The connecting wires 13 pass through the through holes 111 from the front surface of the PCB 11 to the back surface of the PCB 11, and are electrically connected to the circuits on the back surface of the PCB 11, and are generally soldered to the predetermined circuit pads. Owing to be provided with through-hole 111, fix the connecting wire at the lamp strip back to it is positive to lead to the lamp strip through-hole 111, make the through-hole on the lamp strip play the fixed action to the connecting wire, the junction direct atress of connecting wire and lamp strip when avoiding rocking the connecting wire, thereby protected the hookup location of fragile connecting wire and lamp strip, avoid lamp strip line fracture to influence the reliability of lamp strip and module.

Referring to fig. 2, an insulating double-sided heat-conducting adhesive tape 14 is bonded to the back surface of the PCB 11, the insulating double-sided heat-conducting adhesive tape 14 may be used to fix the side-entry light bar, and the insulating double-sided heat-conducting adhesive tape 14 may also be bonded to a welding point 15 on the back surface of the connection line and the light bar to protect the welding point 15. Usually, there are a plurality of connection wires, so the sheath 131 is sleeved on the connection wire 13, which can not only coat the connection wires together, but also further protect the connection wires. The end of the connecting wire 13 can be directly exposed out of the metal wire to be connected with a power supply, preferably, the electrical connecting terminal 132 is directly inserted on the corresponding power supply terminal base during use, so that the assembly is more convenient.

Example two

referring ~ fig. 3 ~ 5, a mounting structure of a light bar and a backlight module includes a back plate 2 and a side-in type light bar 1 described in the first embodiment, the back plate 2 is a supporting and mounting structure of the module, the back plate 2 is further provided with a reflector, a light guide plate, a diffusion film, a brightness enhancement film, an upper frame and other accessory structures in addition ~ the light bar 1, the mounting of these structures can adopt the existing mounting manner, and is not described herein any more, the side-in type light bar 1 can be fixed on the inner side surface of the back plate 2 through an insulated heat-conducting double-sided adhesive 14, so that the side-in type light bar 1 is fixed, and the heat dissipation function of the light bar 1 can be realized by the insulated heat-conducting double-sided adhesive 14, so as ~ ensure the service life of the light bar, the connecting line 13 is arranged close ~ the corner of one side inside the back plate 2, and is led out from the opening 21 of the back plate 2 ~ the outside of the back plate ~ be connected with a power supply, and the connecting line is fixed on the light bar stably by adopting a structure that the connecting.

Referring to fig. 5, as a specific embodiment, the light guide plate 3 is disposed in the back plate 2, the connecting wires 13 are disposed inside the back plate 2 in parallel with the light guide plate 3, and the height of the connecting wires 13 is less than the thickness of the light guide plate 3, so that the connecting wires can be clamped and fixed by the side walls of the light guide plate 3 and the back plate without using other fixing structures, and the installation is more convenient. The light guide plate 3 is provided with the unfilled corner 31 to dodge the connecting wire 13 from the leading-out position of the lateral light bar 1, and meanwhile, the unfilled corner 31 can also be used for identifying the installation direction of the light guide plate, so that misassembly is avoided.

As another specific embodiment, the inner side of the back plate 2 is provided with a wire slot, a groove can be punched as the wire slot when the back plate is formed, the connecting wire 13 is arranged in the wire slot, the light guide plate is pressed above the wire slot and led out of the outer side of the back plate, so that the connecting wire can be fixed, the fixing of the connecting wire is more stable, the backlight module is more attractive, the connecting wire can be prevented from affecting the light emission of the module, and the visual effect of the backlight module on light emission can be improved.

Referring to fig. 4, in order to protect the connecting wires from being scratched by the back plate, an insulating protective adhesive 22 is attached around the opening 21.

it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (9)

1. The utility model provides a side income formula lamp strip which characterized in that: the LED lamp comprises a PCB (11), a light source (12) and a connecting wire (13), wherein the light source (12) is electrically connected to the front surface of the PCB (11); the PCB board (11) is provided with a through hole (111), the connecting wire (13) penetrates through the through hole (111) from the front side of the PCB board (11) to the back side of the PCB board (11) and is electrically connected to a circuit on the back side of the PCB board (11).

2. The side entry light bar of claim 1, wherein: and an insulating heat-conducting double-sided adhesive tape (14) is bonded on the back surface of the PCB (11).

3. The side entry light bar of claim 2, wherein: and a sheath (131) is also sleeved on the connecting wire (13).

4. The side entry light bar of claim 3, wherein: the tail end of the connecting wire (13) is also electrically connected with a terminal (132).

5. A mounting structure of a light bar and a backlight module is characterized by comprising the lateral light bar (1) and a back plate (2) in claims 1 ~ 4, wherein the lateral light bar (1) is fixed on the inner side surface of the back plate (2), and connecting wires (13) are arranged next to the inner side of the back plate (2) and led out of an opening (21) of the back plate (2) to the outer side of the back plate (2).

6. The light bar and backlight module mounting structure of claim 5, wherein: the LED backlight module further comprises a light guide plate (3), and the connecting lines (13) and the light guide plate (3) are arranged on the inner side of the back plate (2) in parallel.

7. The light bar and backlight module mounting structure of claim 6, wherein: the light guide plate (3) is provided with a unfilled corner (31) to avoid a connecting line (13) led out of the side-in light bar (1).

8. the light bar and backlight module mounting structure of claim 5, wherein: a wire groove is formed in the inner side of the back plate (2), and the connecting wire (13) is arranged in the wire groove; the LED lamp is further provided with a light guide plate (3), and the light guide plate (3) is arranged above the connecting wire (13).

9. the mounting structure of the light bar and the backlight module as claimed in any one of claims 6 ~ 8, wherein an insulating protective adhesive (22) is adhered around the opening (21).