Modularized direct type backlight source

Abstract

The utility model is applicable to the technical field of liquid crystal display backlight sources, and provides a modularized direct type backlight source which comprises a back plate, a plurality of plug-in modules installed on the back plate, light bars installed on the plug-in modules and butt joint modules arranged on the light bars, each light bar comprises a PCB (printed circuit board) and light beads installed on the PCB, and the butt joint modules are arranged on the light bars. The butt joint module is arranged on the side, away from the lamp beads, of the PCB, and an insertion block is arranged on each insertion module. According to the device, the problem that the production cost is increased due to the fact that the structure needs to be redesigned when the size or the structure of the direct type backlight source is modified is solved, and the effects that the installation positions and the installation directions of the light bars are adjusted according to different sizes and structures, backlight source modules of different structures are formed, and the production cost is reduced are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid crystal display backlight technology field more specifically, it relates to a kind of modular direct type backlight. BACKGROUND

[0002] Direct type backlight is a kind of backlight technology of liquid crystal display, its characteristics are that LED lamp pearl is evenly arranged in the back of entire liquid crystal panel.This design makes light source can be evenly irradiated to entire screen, provides stable brightness for picture.

[0003] The direct type backlight of current mass production all adopts integrated structure, and nowadays the change of backlight is very fast, but all changes cannot be too big, generally slightly modify size or structure.But backlight manufacturer needs to redesign backlight structure, and all components need to be changed, which invisibly greatly increases production cost.

[0004] Therefore, a backlight structure capable of modularizing assembling lamp strips according to size and structure adjustment is needed. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a modular direct type backlight, which adjusts the installation position and installation direction of lamp strips according to different sizes and structures, forms backlight modules of different structures, and reduces production cost.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of modular direct type backlight, including backboard, a plurality of plug-in modules mounted on backboard, lamp strip mounted on plug-in module and the docking module being provided on lamp strip, each lamp strip includes PCB board and lamp pearl mounted on PCB board, the docking module is provided on the side of PCB board away from lamp pearl, plug-in block is provided on each plug-in module.

[0008] The utility model is further provided as follows: the plug-in module is equidistantly provided with multiple plug-in modules along the length direction and the width direction of backboard, and one lamp strip can be mounted on each plug-in module.

[0009] The utility model is further provided as follows: each plug-in module further includes a base mounted on backboard, the plug-in block is mounted on the base, the plug-in block is symmetrically provided with two groups of transverse protruding portions along horizontal direction axis, and the plug-in block is symmetrically provided with two groups of longitudinal protruding portions along vertical direction axis.

[0010] The utility model is further provided as follows: the transverse protruding portion and longitudinal protruding portion are provided with arc-shaped abutment portion, and four abutment portions are symmetrically arranged about base axis.

[0011] By adopting the above technical solution, the positions of the four mating slots correspond one-to-one with the positions of the transverse and longitudinal protrusions on the plug-in block. When the mating module is inserted into the plug-in block, the four mating slots engage with the transverse and longitudinal protrusions on the plug-in block respectively. The positions of the four snap-fit ​​strips correspond one-to-one with the abutment parts on the plug-in block. The depth of the four mating blocks is greater than the thickness of the plug-in block. When the mating module is inserted into the plug-in block, the snap-fit ​​strips can abut against the edge of the abutment part.

[0012] The present invention is further configured such that: the PCB board is configured as a rectangular structure, and several LED beads are arranged at equal intervals along the PCB board.

[0013] The present invention is further configured such that: the shape of the docking module is adapted to the plug-in block, and four docking blocks are symmetrically arranged inside the docking module along the axial direction, with a docking groove formed between two adjacent docking blocks.

[0014] The present invention is further configured such that: four locking strips are symmetrically arranged inside the docking block about the central axis, and the locking strips are arranged on one side of the docking groove.

[0015] The beneficial effects of this utility model are:

[0016] When the size or structure of a direct-lit backlight needs adjustment, simply install LED strips of different sizes onto plug-in modules at different positions on the backplate using the docking module. Depending on the specific requirements, the symmetrical structure on the plug-in and docking modules can be utilized to rotate the LED strip 90° before installation, thus changing its installation direction. By changing the installation position and direction of the LED strips, different LED strip arrays can form backlight modules with different structures, thereby avoiding the need to redesign component structures due to changes in the backlight structure and reducing production costs. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the modular direct-lit backlight of this utility model.

[0019] Figure 2 for Figure 1 The diagram shows the structure of the plug-in module.

[0020] Figure 3 for Figure 1 The rear view of the light strip shown.

[0021] Figure 4 for Figure 1Structure schematic view of the lamp strip along the longitudinal direction matched with the plug-in module.

[0022] Figure 5 For Figure 1 Structure schematic view of the lamp strip along the transverse direction matched with the plug-in module.

[0023] Legend: 1, back plate;

[0024] 2, plug-in module; 21, base; 22, plug-in block; 221, transverse protruding part; 222, longitudinal protruding part; 223, abutting part;

[0025] 3, lamp strip; 31, PCB board; 32, lamp bead;

[0026] 4, docking module; 41, docking block; 42, docking groove; 43, buckle strip. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clear, the utility model will be described in detail in combination with the drawings. The drawing is a simplified schematic view, and only illustrates the basic of the utility model in a schematic manner, so it only shows the structure related to the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] Please refer to Figures 1-3 A modular direct type backlight source, comprising a back plate 1, a plurality of plug-in modules 2 installed on the back plate 1, a lamp strip 3 installed on the plug-in module 2 and a docking module 4 arranged on the lamp strip 3, the docking module 4 can be plugged into the plug-in module 2, so as to realize the installation between the lamp strip 3 and the back plate 1, and the change of the installation position and direction of the lamp strip 3 can also be realized through the installation of different docking modules 4 and plug-in modules 2.

[0029] Please refer to Figure 1 The back plate 1 is arranged as a rectangular structure, and a plurality of plug-in modules 2 are arranged on the back plate 1 along the length direction and the width direction thereof, in the embodiment, the spacing between the adjacent two groups of plug-in modules 2 is consistent, and in some other embodiments, the spacing between the adjacent two groups of plug-in modules 2 can also be inconsistent.

[0030] Please refer to Figures 1-2Each plug-in module 2 comprises a base 21 mounted on the back plate 1 and a plug-in block 22 mounted on the base 21. The base 21 is provided in a circular structure, and the plug-in block 22 is mounted on the side of the base 21 away from the back plate 1. The plug-in block 22 is provided with two groups of transverse protrusions 221 symmetrically along the horizontal direction and two groups of longitudinal protrusions 222 symmetrically along the vertical direction. The transverse protrusions 221 and the longitudinal protrusions 222 are provided in a consistent and symmetrical structure. The transverse protrusions 221 and the longitudinal protrusions 222 are provided with circular-arc abutting portions 223 therebetween, and the four abutting portions 223 are provided symmetrically about the base 21. The included angle between the abutting portion 223 and the adjacent transverse protrusion 221 and longitudinal protrusion 222 is 45°.

[0031] Please refer to Figure 1 and 3 Each plug-in module 2 can be mounted with one light bar 3, and each light bar 3 comprises a PCB board 31 and lamp beads 32 mounted on the PCB board 31. The PCB board 31 is provided in a rectangular structure, and the lamp beads 32 are provided equidistantly along the PCB board 31. The lamp beads 32 can be provided in multiple columns along the length direction and the width direction of the PCB board 31, and in this embodiment, only one of them is shown as an example, and in other embodiments, the lamp beads 32 can also be provided in other quantities. Different PCB boards 31 are combined to emit light in a series-parallel manner, the lamp beads 32 and the PCB board 31 are electrically connected, and the PCB board 31 is responsible for power supply and control of the LED lamp beads.

[0032] Please refer to Figures 3-5 The side of the PCB board 31 away from the lamp beads 32 is provided with a docking module 4, the docking module 4 is provided in a hollow circular structure with a shape adapted to the shape of the base 21, and the internal shape of the docking module 4 is adapted to the plug-in block 22. Four docking blocks 41 are provided symmetrically along the axis direction inside the docking module 4, and a docking groove 42 is formed between the adjacent two docking blocks 41. The shapes of the four docking grooves 42 are adapted to the shapes of the transverse protrusions 221 and the longitudinal protrusions 222 on the plug-in block 22, and the positions of the four docking grooves 42 correspond to the positions of the transverse protrusions 221 and the longitudinal protrusions 222 on the plug-in block 22 one by one. When the docking module 4 is inserted on the plug-in block 22, the four docking grooves 42 are respectively embedded with the transverse protrusions 221 and the longitudinal protrusions 222 on the plug-in block 22. Four buckle strips 43 are provided symmetrically about the center axis inside the docking block 41, and the buckle strips 43 are provided on one side of the docking groove 42. The shapes of the four buckle strips 43 are adapted to the shape of the abutting portion 223 on the plug-in block 22, and the positions of the four buckle strips 43 correspond to the positions of the abutting portion 223 on the plug-in block 22 one by one. The depth of the four docking blocks 41 is greater than the thickness of the plug-in block 22, and when the docking module 4 is inserted on the plug-in block 22, the buckle strip 43 can abut against the edge of the abutting portion 223.

[0033] Specifically, when the size or structure of the direct backlight needs to be adjusted, only the lamp strip 3 of different sizes is installed on the plug-in module 2 at different positions of the back plate 1 through the docking module 4, so that the position of the lamp strip 3 can be adjusted. According to actual needs, the lamp strip 3 can also be installed after being rotated by 90° by using the symmetrical structure of the plug-in module 2 and the docking module 4, that is, the installation direction of the lamp strip 3 is changed. By changing the installation position and direction of the lamp strip 3, different backlight modules with different structures are formed by different arrays of the lamp strip 3, so that the component structure is not redesigned due to the change of the backlight structure, and the production cost is reduced.

[0034] In the description of the present application, it should be pointed out that, unless otherwise explicitly defined and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection or integrated connection, it can be mechanical connection, it can be direct connection or indirect connection through intermediate medium, it can be internal communication of two elements or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] Based on the ideal embodiments of the present application, the above description, relevant personnel can make various changes and modifications without deviating from the scope of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of the claims.

Claims

1. A modular direct backlight, characterized by: The application relates to a backboard (1), a plurality of plug-in modules (2) mounted on the backboard (1), a lamp strip (3) mounted on the plug-in module (2) and a butt joint module (4) arranged on the lamp strip (3), each lamp strip (3) comprises a PCB board (31) and lamp beads (32) mounted on the PCB board (31), the butt joint module (4) is arranged on the side, away from the lamp beads (32), of the PCB board (31), and each plug-in module (2) is provided with a plug-in block (22).

2. The modular direct-lit backlight of claim 1, wherein: The plug-in modules (2) are equidistantly arranged along the length direction and the width direction of the backboard (1), and one lamp strip (3) can be mounted on each plug-in module (2).

3. The modular direct-lit backlight of claim 2, wherein: Each plug-in module (2) further comprises a base (21) mounted on the backboard (1), the plug-in block (22) is mounted on the base (21), the plug-in block (22) is symmetrically provided with two groups of transverse protruding portions (221) along the horizontal direction axis, and the plug-in block (22) is symmetrically provided with two groups of longitudinal protruding portions (222) along the vertical direction axis.

4. The modular direct-lit backlight of claim 3, wherein: Arc-shaped abutting portions (223) are arranged between the transverse protruding portions (221) and the longitudinal protruding portions (222), and four abutting portions (223) are symmetrically arranged about the base (21) axis.

5. The modular direct-lit backlight of claim 1, wherein: The PCB board (31) is arranged in a rectangular structure, and a plurality of lamp beads (32) are equidistantly arranged on the PCB board (31).

6. The modular direct-lit backlight of claim 1, wherein: The butt joint module (4) is shaped to be matched with the plug-in block (22), four butt joint blocks (41) are symmetrically arranged in the butt joint module (4) along the axis direction, and butt joint grooves (42) are formed between two adjacent butt joint blocks (41).

7. The modular direct-lit backlight of claim 6, wherein: Four buckle strips (43) are symmetrically arranged in the butt joint block (41) about the central axis, and the buckle strips (43) are arranged on one side of the butt joint groove (42).

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