LED backlight plate

Abstract

An LED backlight plate comprises a support shell, a containing groove is formed in the surface of one side of the support shell, a flange is arranged on the edge of the containing groove, an edge strip is arranged at the junction of the containing groove and the flange, a pair of oppositely-arranged ribs are arranged on one side of the containing groove, the ribs and the containing groove are arranged in a wedge shape, a light guide plate is arranged in the containing groove, and a light-emitting assembly is arranged on one side of the wedge-shaped end of the light guide plate. The light-emitting assembly comprises a lamp panel and an LED lamp bead, the lamp panel is partially overlapped on the upper portion of the wedge-shaped end, the LED lamp bead is attached to the side wall of the wedge-shaped end from the side edge, the end of the flange extends to form an L-shaped flange used for positioning the lamp panel, the L-shaped flange is provided with a lamp panel clamping column used for being connected with the lamp panel in a clamped mode, and the side, opposite to the lamp panel clamping column, of the flange is provided with an elastic lamp panel buckle. The lamp panel is oppositely clamped through the lamp panel clamping column and the lamp panel clamping buckle, so that the lamp panel is installed on the surface of the containing groove in a positioning mode, the lamp panel installation structure has the advantages of being convenient and fast to install, and the display screen is conveniently installed through the arrangement of the display screen clamping buckle.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight panels, in particular to an LED backlight panel. Background Art

[0002] The backlight panel is a light source device used to ensure that light is emitted from behind the liquid crystal display. Because the liquid crystal display device itself is transparent and does not emit light, a backlight panel is needed to provide light for the liquid crystal display device. The brightness, uniformity and other indicators of the backlight panel have a direct impact on the relevant performance of the liquid crystal display panel.

[0003] With the development of intelligent household appliances, backlight panels are more and more widely used in the field of household appliances, and backlight panels also tend to develop in the direction of miniaturization. In order to adapt to the development of miniaturization of backlight panels, LED lamp beads are set in the light-emitting components of the backlight panel and can only be installed from the side wall of the bracket shell. The LED light emitted from the side wall is converted into a point light source and a soft and uniform surface light source by using a light guide plate, so that the liquid crystal display screen achieves the purpose of providing light source. However, after adopting the side wall reflection, the installation and assembly requirements of the light-emitting components and light guide plates of the backlight panel are higher, especially after the backlight panel tends to develop in the direction of miniaturization. Since it is impossible to adopt the traditional screw assembly method of the large backlight panel similar to the LED panel lamp, it is necessary to design an LED backlight panel with a small bracket shell that is suitable for simple and convenient installation of the light-emitting components, light guide plates and display devices, so as to solve the problem of assembly difficulties caused by the miniaturization of the existing LED backlight panels. Utility Model Content

[0004] The utility model aims to provide an LED backlight panel, aiming to solve the problem of difficulty in assembling caused by LED lamp beads being installed on the side wall after the existing LED backlight panel is miniaturized.

[0005] In view of this, the technical solution provided by the utility model is: an LED backlight panel, comprising a rectangular bracket shell, a side surface of the bracket shell is provided with a sunken placement groove, the edge of the placement groove is provided with a retaining edge protruding from the placement groove, the retaining edge is provided with three sides surrounding one opening, and the opening of the retaining edge is provided in the direction of the rectangular long side of the bracket shell, a side strip protruding from the placement groove is provided at the junction of the placement groove and the retaining edge, the placement groove is provided with a pair of ribs arranged oppositely on one side in the width direction, the ribs and the placement groove are wedge-shaped, the surface of the ribs is flush with the surface of the side strip, a light guide plate is provided in the placement groove, A wedge-shaped end corresponding to the placement groove is provided at one end of the light guide plate, and a light-emitting component is provided on one side of the wedge-shaped end. The light-emitting component includes a light board and a plurality of LED lamp beads arranged on the light board. The light board is partially overlapped on the upper part of the wedge-shaped end, and the plurality of LED lamp beads are attached to the side wall of the wedge-shaped end from the side. An L-shaped edge extends from the end of the edge for positioning the light board. The L-shaped edge is provided with a light board clamping column for clamping the light board. The edge is provided with an elastic light board buckle on the side relative to the light board clamping column. The light board is relatively clamped by the light board clamping column and the light board buckle, so that the light board is positioned and installed on the surface of the placement groove.

[0006] Furthermore, the two ends of the retaining edge are provided with display screen buckles corresponding to the outer side of the placement slot, and the display screen buckles are arranged in a direction parallel to the long side direction of the bracket shell. The display screen of the display device is elastically clamped to the upper part of the placement slot through the display screen buckles.

[0007] Furthermore, the display screen buckle is provided with an inverted hook in the inner direction of the placement groove, and the inverted hook is provided with a clamping column, and the clamping column is arranged in an arc shape. The inverted hook is used to press the upper surface of the display screen when the display screen of the display device is installed. At the same time, during the clamping process, due to the provision of the clamping column arranged in an arc shape, the side wall of the display screen is clamped by the arc of the clamping column arranged in an arc shape, which can well prevent the side wall of the display screen from being damaged during the clamping process.

[0008] Furthermore, the retaining edge is provided with a display screen clamping column corresponding to the undercut, and the display screen clamping column is used to further press the upper surface of the display screen when installing the display screen of the display device, so as to achieve good fixing and pressing when the display screen is installed later.

[0009] Furthermore, a wedge-shaped reflective film is provided below the light guide plate, and the reflective film is attached to the bottom of the placement groove. By providing a reflective film below the light guide plate, the reflective film can reflect the light transmitted from the side wall of the LED lamp beads to the surface direction of the placement groove of the bracket shell, which is beneficial to improve the light utilization rate of the backlight plate, and further improve the brightness of the backlight plate surface.

[0010] Furthermore, a diffuser film is provided on the upper part of the light guide plate, through which the light transmitted from the light guide plate is diffusely reflected by the diffuser film, so that the light changes from harsh glare to soft light after passing through the diffuser film.

[0011] Furthermore, a circle of shading film is arranged outside the light-diffusing film, and the shading film is attached to the edge strip. The shading film can further reflect the light diverging at the edge of the bracket shell onto the light guide plate by blocking, so that the light at the edge is linearly reflected back onto the light guide plate, further improving the light utilization rate of the LED lamp beads.

[0012] Furthermore, the placement groove is provided with a pin groove on the outer side in the long side direction relative to the retaining edge. The pin groove can be used to position and limit the pins of the installed display screen to avoid mutual contact between the pins.

[0013] Furthermore, the light-emitting component also includes lamp bead pins arranged on the lamp board, and the retaining edge is provided with pin notches corresponding to the lamp bead pins. The lamp bead pins of the light-emitting component are led out through the pin notches, thereby facilitating the electrical connection between the light-emitting component and the external power supply.

[0014] Furthermore, three LED lamp beads are arranged on the lamp board, and the three LED lamp beads are evenly arranged along the side wall. The light emitted by the LED lamp beads diffuses along the wedge-shaped end direction through the side wall of the light guide plate and is transmitted on the surface of the light guide plate.

[0015] In the utility model, a plurality of elastic mounting buckles are arranged at the edge of the other side of the placement groove, and the plurality of elastic mounting buckles facilitate the installation of the LED lamp backlight plate on the equipment.

[0016] The utility model has the advantages that the light guide plate and the reflective film of the LED lamp backlight plate are positioned and installed by the placement groove arranged in a wedge shape, and the lamp board of the light-emitting component is positioned at the wedge-shaped upper part of the placement groove by the L-shaped retaining edge, and the lamp board is relatively fixed by the lamp board clamping column and the lamp board buckle, which has the characteristics of convenient and quick installation.

[0017] The utility model provides a pair of display screen clips extending outside the placement groove, so that the display screen of the display device can be easily and elastically clipped to the upper part of the placement groove when installing the display device, and the display screen can be clamped from the top by the display screen clip column. Therefore, the LED lamp backlight panel of the utility model is also convenient for the subsequent installation of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the three-dimensional exploded structure of the utility model.

[0020] Figure 3 This is one of the schematic diagrams of the front three-dimensional structure of the bracket shell.

[0021] Figure 4 This is the second schematic diagram of the front three-dimensional structure of the bracket shell.

[0022] Figure 5 It is a schematic diagram of the reverse three-dimensional structure of the bracket shell.

[0023] Figure 6 for Figure 3 A is a partial enlarged schematic diagram.

[0024] Figure 7 for Figure 3 Middle B is a partial enlarged schematic diagram.

[0025] Figure 8 for Figure 4 Partially enlarged schematic diagram in center C.

[0026] Fig. 9 for Figure 4 Middle D is a partial enlarged schematic diagram.

[0027] Fig.10 It is a schematic diagram of the connection structure between the light guide plate and the light-emitting component.

[0028] Among them: 1- bracket shell, 11- placement groove, 111- edge strip, 112- rib, 12- retaining edge, 121- pin notch, 122- L-shaped retaining edge, 123- display screen card column, 124- light board buckle, 125- light board card column, 13- display screen buckle, 131- reverse hook, 132- clamping column, 14- installation buckle, 15- pin groove, 2- reflective film, 3- light guide plate, 31- wedge end, 32- side wall, 4- light-emitting component, 41- light board, 42- LED lamp beads, 43- lamp bead pins, 5- diffuser film, 6- shading film. DETAILED DESCRIPTION

[0029] The following is a brief description of the implementation of the present utility model in conjunction with the accompanying drawings.

[0030] An LED backlight panel, referring to 1- Figure 5, including a rectangular bracket shell 1, a sunken placement groove 11 is opened on one side surface of the bracket shell 1, a retaining edge 12 protruding from the placement groove 11 is provided at the edge of the placement groove 11, the retaining edge 12 is arranged to surround one opening on three sides, and the opening of the retaining edge 12 is arranged in the direction of the rectangular long side of the bracket shell 1, a side strip 111 protruding from the placement groove 11 is provided at the junction of the placement groove 11 and the retaining edge 12, and the placement groove 11 is provided with a pair of oppositely arranged ribs 112 on one side in the width direction, and the ribs 112 and the placement groove 11 are arranged in a wedge shape The surface of the rib 112 is flush with the surface of the edge strip 111. A plurality of elastic mounting buckles 14 are provided at the edge of the other side of the placement groove 11. The plurality of elastic mounting buckles 14 facilitate the installation of the LED backlight panel on the device. A pin notch 121 is provided on the retaining edge 12 for the lamp bead pin 43 to make way. The placement groove 11 is provided with a pin groove 15 on the outer side of the long side direction relative to the retaining edge 12. The pin groove 15 can be used to position and limit the pins of the installed display screen to avoid mutual contact between the pins.

[0031] A light guide plate 3 is provided in the placement groove 11, and a wedge-shaped end 31 corresponding to the placement groove 11 is provided at one end of the light guide plate 3, and a light emitting component 4 is provided on one side of the wedge-shaped end 31. A wedge-shaped reflective film 2 is provided below the light guide plate 3, and the reflective film 2 is attached to the bottom of the placement groove 11. A diffuser film 5 is provided on the upper part of the light guide plate 3, and a circle of shading film 6 is provided on the outer side of the diffuser film 5. The shading film 6 is attached to the edge strip 111. The light of the light emitting component 4 passes through the side wall 32 attached to the wedge-shaped end 31 of the LED lamp bead 42 and is guided to the guide along the wedge-shaped end 31. The light guide plate 3 is formed on the upper surface of the bracket shell 1, and the light transmitted from the LED lamp bead 42 from the side wall 32 is reflected toward the surface direction of the placement groove 11 of the bracket shell 1 through the reflective film 2. The light transmitted from the light guide plate 3 is diffusely reflected by the diffuser film 5, so that the light changes from the dazzling glare to soft light after passing through the diffuser film 5. The shading film 6 can further reflect the light diverging at the edge of the bracket shell 1 to the light guide plate 3 by blocking, so that the light at the edge is linearly reflected back to the light guide plate 3, thereby further improving the light utilization rate of the LED lamp bead 42.

[0032] Reference Fig.10The light-emitting component 4 includes a lamp board 41 and a plurality of LED lamp beads 42 arranged on the lamp board 41. The lamp board 41 is partially overlapped on the upper part of the wedge-shaped end 31, and the plurality of LED lamp beads 42 are attached to the side wall 32 of the wedge-shaped end 31 from the side. The lamp board 41 is also provided with lamp bead pins 43. The lamp bead pins 43 of the light-emitting component 4 are led out through the pin notches 121 of the retaining edge 12, so as to facilitate the electrical connection between the light-emitting component 4 and the external power supply. The LED lamp beads 42 are side-emitting. Preferably, three LED lamp beads 42 are arranged on the lamp board 41, and the three LED lamp beads 42 are evenly arranged along the side wall 32. The light emitted by the LED lamp beads 42 diffuses along the direction of the wedge-shaped end 31 through the side wall 32 of the light guide plate 3 and is transmitted on the surface of the light guide plate 3.

[0033] Reference Figure 6 , Figure 7 An L-shaped rib 122 for positioning the light board 41 extends from the end of the rib 12. The L-shaped rib 122 is provided with a light board clamping column 125 for clamping the light board 41. Fig. 9 The retaining edge 12 is provided with an elastic lamp board buckle 124 on the side relative to the lamp board clamping column 125. The lamp board buckle 124 is elastically set. The lamp board 41 is relatively clamped by the lamp board clamping column 125 and the lamp board buckle 124, so that the lamp board 41 is positioned and installed on the surface of the placement groove 11.

[0034] In order to facilitate the installation of the LED backlight panel on the subsequent display device, refer to Figure 6 , Figure 7 , the two ends of the retaining edge 12 are provided with display screen buckles 13 correspondingly extending outside the placement groove 11, and the display screen buckles 13 are arranged in a direction parallel to the long side direction of the bracket shell 1, and the display screen of the display device is elastically clamped on the upper part of the placement groove 11 through the display screen buckle 13, and the display screen buckle 13 is provided with a barb 131 in the inner direction of the placement groove 11, and the barb 131 is provided with a clamping column 132, and the clamping column 132 is arranged in an arc shape. The barb 131 is used to press the upper surface of the display screen when installing the display screen of the display device. At the same time, in the process of clamping, due to the provision of the clamping column 132 arranged in an arc shape, the side wall of the display screen is clamped by the arc of the clamping column 132 arranged in an arc shape, which can well prevent the side wall of the display screen from being damaged during the clamping process. Figure 8 , Fig. 9 A display screen clamping column 123 corresponding to the undercut 131 is provided on the retaining edge 12. The display screen clamping column 123 is used to further press the upper surface of the display screen when installing the display screen of the display device, so as to achieve good fixing and pressing when the display screen is installed later.

[0035] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An LED backlight panel, comprising a rectangular bracket shell, characterized in that: A sunken placement groove is provided on one side surface of the bracket shell, and a retaining edge protruding from the placement groove is provided on the edge of the placement groove, the retaining edge is arranged to surround an opening on one side with three sides, and the opening of the retaining edge is arranged in the direction of the rectangular long side of the bracket shell, and a side strip protruding from the placement groove is provided at the junction of the placement groove and the retaining edge, and the placement groove is provided with a pair of ribs arranged oppositely on one side in the width direction, and the ribs and the placement groove are arranged in a wedge shape, and the surface of the ribs is flush with the surface of the side strip, and a light guide plate is provided in the placement groove, and a wedge corresponding to the placement groove is provided at one end of the light guide plate shaped end, a light-emitting component is provided on one side of the wedge-shaped end, the light-emitting component includes a light board and a plurality of LED lamp beads arranged on the light board, the light board is partially overlapped on the upper part of the wedge-shaped end, and the plurality of LED lamp beads are attached to the side wall of the wedge-shaped end from the side, an L-shaped guard edge extends from the end of the guard edge for positioning the light board, the L-shaped guard edge is provided with a light board clamping column for clamping the light board, the guard edge is provided with an elastic light board buckle on the side relative to the light board clamping column, the light board is relatively clamped by the light board clamping column and the light board buckle, so that the light board is positioned and installed on the surface of the placement groove.

2. The LED backlight panel according to claim 1, characterized in that: The two ends of the retaining edge are provided with display screen buckles corresponding to and extending outside the placement groove, and the display screen buckles are arranged in a direction parallel to the long side direction of the bracket shell.

3. The LED backlight panel according to claim 2, characterized in that: The display screen buckle is provided with an inverted hook in the inner direction of the placement groove, and the inverted hook is provided with a clamping column, and the clamping column is arranged in an arc shape.

4. The LED backlight panel according to claim 3, characterized in that: The retaining edge is provided with a display screen card column corresponding to the undercut.

5. The LED backlight panel according to claim 1, characterized in that: A wedge-shaped reflective film is provided below the light guide plate, and the reflective film is attached to the bottom of the placement groove.

6. The LED backlight panel according to claim 1, characterized in that: A light diffusion film is provided on the upper portion of the light guide plate.

7. The LED backlight panel according to claim 1, characterized in that: A circle of light-shielding film is arranged on the outer side of the light-scattering film, and the light-shielding film is attached to the edge strip.

8. The LED backlight panel according to claim 1, characterized in that: The placement groove is provided with a pin groove on the outer side in the long side direction relative to the rib.

9. The LED backlight panel according to claim 1, characterized in that: The light-emitting component further includes lamp bead pins arranged on the lamp board, and the retaining edge is provided with pin notches corresponding to the lamp bead pins.

10. The LED backlight panel according to claim 1, characterized in that: Three LED lamp beads are arranged on the lamp board, and the three LED lamp beads are evenly arranged along the side wall.

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