Double-layer display structure LED display module

Abstract

The utility model discloses a double -deck display structure LED display module, including shell, the lower layer PCB board of being located in the shell, the reflection cavity of being connected with the lower layer PCB board pin, set in the upper layer light guide plate of lower layer PCB board, set in the silk screen panel of upper layer light guide plate, be provided with the lower layer light guide plate between upper layer light guide plate and lower layer PCB board, and the side of lower layer light guide plate in the shell is provided with the upper layer superimposed PCB board of welding on lower layer PCB board, be provided with straight emitting LED light source and side emitting LED light source respectively on lower layer PCB board and upper layer superimposed PCB board. Utilize the double -deck light guide plate superimposed mode of upper layer light guide plate + lower layer light guide plate, cooperate the double -deck PCB of lower layer PCB board + upper layer superimposed PCB board, respectively to conduct light, utilize straight emitting LED light source and side emitting LED light source respectively set up on lower layer PCB board and upper layer superimposed PCB board, realize the display of lamination in same interface, and the whole layer's atmosphere background and button position can show different brightness effect.

Description

Technical Field

[0001] This utility model relates to a dual-layer LED display module, and more particularly to a dual-layer LED display module that displays a dual-layer effect within the same window. Background Technology

[0002] With the continuous development of the smart home market and consumers' pursuit of a high-quality life, various home appliances are constantly innovating in terms of digital display modules. The functions and applications of display modules are constantly increasing, and the display interfaces are becoming more and more colorful. The demand for multi-color and multi-layer displays in modules is also growing.

[0003] To help customers achieve better display effects and more added functions, we hope to adjust the product's structural design and overall combination mode to achieve a dual-layer display effect for the LED display module, thus meeting more usage scenarios and needs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dual-layer LED display module with the feature of dual-layer effect display under the same window.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a dual-layer LED display module, the innovation of which is: the dual-layer LED display module includes a shell, a lower PCB board located inside the shell, a reflective cavity disposed above the lower PCB board and located in the middle area of ​​the lower PCB board and connected to the pins of the lower PCB board, an upper light guide plate disposed above the lower PCB board and through which the reflective cavity passes, and a silkscreen panel disposed above the upper light guide plate. The lower light guide plate is disposed between the upper light guide plate and the lower PCB board. An upper superimposed PCB board is soldered to the lower PCB board on the side of the lower light guide plate inside the shell. A direct-emitting LED light source and a side-emitting LED light source are respectively disposed on the lower PCB board and the upper superimposed PCB board. The silkscreen panel is bonded to the shell and the upper light guide plate by adhesive on the back of the silkscreen panel.

[0006] Preferably, two sets of lower light guide plates are provided between the upper light guide plate and the lower PCB board, and two positioning grilles are provided on the outer shell for quick installation of the corresponding lower light guide plates. The positioning grilles are located between the upper light guide plate and the lower PCB board.

[0007] Preferably, the lower light guide plate is composed of several lower light guide plate units arranged side by side, and the positioning grid is provided with several positioning cavities for the lower light guide plate units to be embedded in, the number of positioning cavities being greater than or equal to the number of lower light guide plate units.

[0008] Preferably, a protrusion located in the middle of the upper light guide plate is provided on the side of the upper light guide plate near the lower PCB board, and the two positioning grilles and the outer shell form a groove area for the protrusion to be embedded.

[0009] Preferably, the protrusion has a cuboid structure, and the contact between the protrusion and the positioning grille is a line contact or a surface contact; the part of the positioning grille that contacts the protrusion is a reinforcing rib connecting the inner walls of the two parallel sides of the outer shell.

[0010] Preferably, the protrusion and the upper light guide plate are an integral structure.

[0011] Preferably, the positioning grille is integrally injection molded with the outer shell.

[0012] Preferably, the reflective cavity includes a display module, the reflective cavity is circular or elliptical, and the upper light guide plate is provided with mounting holes for the upper light guide plate to pass through.

[0013] Preferably, the upper superimposed PCB board is provided on both the upper and lower parallel sides of the lower light guide plate, and the upper and lower parallel sides of the lower light guide plate are arranged parallel to the long side of the outer shell.

[0014] The advantages of this utility model are as follows: By adopting the above structure, the light is transmitted through a double-layer light guide plate (upper and lower layers) combined with a double-layer PCB (lower and upper layers). The size of the display interface is controlled by the size of the upper and lower light guide plates. The direct-emitting LED light source and the side-emitting LED light source (lower and upper layers) respectively set on the lower and upper layers allow for layered display within the same interface. The ambient background and button positions of the entire layer can display different brightness effects. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments or prior art described herein, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this article. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of a dual-layer LED display module according to this utility model.

[0017] Figure 2 This is a front view of a dual-layer LED display module according to this utility model.

[0018] Figure 3 This is a left view of a dual-layer LED display module according to this utility model.

[0019] Figure 4 yes Figure 3 A magnified view of a portion of the image, B.

[0020] In the diagram: 1-outer shell, 11-positioning grille, 12-positioning cavity, 13-reinforcing rib, 2-lower PCB board, 3-reflective cavity, 4-upper light guide plate, 41-protrusion, 42-mounting hole, 5-silk screen panel, 6-lower light guide plate, 7-upper superimposed PCB board. Detailed Implementation

[0021] This utility model discloses a dual-layer LED display module, comprising a housing 1, a lower PCB board 2 located within the housing 1, a reflective cavity 3 positioned above and in the middle of the lower PCB board 2 and connected to the pins of the lower PCB board 2, an upper light guide plate 4 positioned above the lower PCB board 2 through which the reflective cavity 3 passes, and a silkscreen panel 5 positioned above the upper light guide plate 4. A lower light guide plate 6 is disposed between the upper light guide plate 4 and the lower PCB board 2. An upper superimposed PCB board 7, soldered to the lower PCB board 2, is disposed on the side of the lower light guide plate 6 within the housing 1. Direct-emitting LED sources and side-emitting LED sources (not shown in the figure) are respectively disposed on the lower PCB board 2 and the upper superimposed PCB board 7. The silkscreen panel 5 is bonded to the housing 1 and the upper light guide plate 4 with adhesive on the back of the silkscreen panel. By adopting the above structure, the light is transmitted through the superposition of the upper light guide plate 4 and the lower light guide plate 6, and the double-layer PCB of the lower PCB board 2 and the upper superimposed PCB board 7. The size of the display interface is controlled by the size of the upper light guide plate 4 and the lower light guide plate 6. The direct-emitting LED light source and the side-emitting LED light source set on the lower PCB board 2 and the upper superimposed PCB board 7 respectively are used to realize the layered display within the same interface. The ambient background and button positions of the entire layer can display different brightness effects.

[0022] In this invention, two sets of lower light guide plates 6 are arranged between the upper light guide plate 4 and the lower PCB board 2. The outer casing 1 has two positioning grilles 11 for quick installation of the corresponding lower light guide plates 6, located between the upper light guide plate 4 and the lower PCB board 2. Each lower light guide plate 6 is composed of several lower light guide plate units arranged side-by-side. The positioning grilles 11 have several positioning cavities 12 for the lower light guide plate units to be embedded in, and the number of positioning cavities 12 is greater than or equal to the number of lower light guide plate units.

[0023] To restrict the degree of freedom between the upper light guide plate 4 and the outer shell 1, a protrusion 41 is provided on the side of the upper light guide plate 4 near the lower PCB board 2, located in the middle of the upper light guide plate 4. Two positioning grilles 11 and the outer shell 1 form a groove area for the protrusion 41 to be inserted. The protrusion 41 has a cuboid structure, and the contact between the protrusion 41 and the positioning grille 11 is either line contact or surface contact. The part of the positioning grille 11 that contacts the protrusion 41 is a reinforcing rib 13 connecting the inner walls of the two parallel sides of the outer shell 1. The protrusion 41 and the upper light guide plate 4 are an integral structure. The positioning grille 11 and the outer shell 1 are integrally injection molded.

[0024] In this invention, the reflective cavity 3 contains a display module, and the reflective cavity 3 is circular or elliptical. The upper light guide plate 4 is provided with mounting holes 42 for the upper light guide plate 4 to pass through. The upper and lower parallel sides of the lower light guide plate 6 are provided with upper superimposed PCB boards 7, and the upper and lower parallel sides of the lower light guide plate 6 are parallel to the long side of the outer shell 1.

[0025] In this invention, the lower PCB board 2 serves as a direct-emitting LED light source and a connector socket carrier, while the upper superimposed PCB board 7 serves as a side-emitting LED light source and a connector socket carrier. The silkscreen panel 5 is a colored, light-blocking silkscreen panel. Through the double-layered PCB board, combined with the double-layered upper light guide plate 4 and lower light guide plate 6, the LED light source on the lower PCB board 2 illuminates the entire ambient pattern interface via the upper light guide plate 4. The side-emitting LED light source on the upper superimposed PCB board 7 illuminates the touch buttons on both sides individually via the lower light guide plate 6. The direct-emitting LED light source and the reflective cavity 3 work together to achieve digital display in the central circular area.

[0026] This document uses specific embodiments to illustrate the principles and implementation methods of this document. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this document. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this document. Therefore, the content of this specification should not be construed as a limitation of this document.

Claims

1. A dual-layer LED display module, characterized in that: The dual-layer LED display module includes a housing, a lower PCB board located inside the housing, a reflective cavity disposed above the lower PCB board and located in the middle area of ​​the lower PCB board and connected to the pins of the lower PCB board, an upper light guide plate disposed above the lower PCB board and through which the reflective cavity passes, and a silkscreen panel disposed above the upper light guide plate. The lower light guide plate is disposed between the upper light guide plate and the lower PCB board. An upper superimposed PCB board is soldered to the lower PCB board and disposed on the side of the lower light guide plate inside the housing. A direct-emitting LED light source and a side-emitting LED light source are respectively disposed on the lower PCB board and the upper superimposed PCB board. The silkscreen panel is bonded to the housing and the upper light guide plate by adhesive on the back of the silkscreen panel.

2. The dual-layer LED display module as described in claim 1, characterized in that: Two sets of lower light guide plates are provided between the upper light guide plate and the lower PCB board. The outer shell is provided with two positioning grilles for quick installation of the corresponding lower light guide plates. The positioning grilles are located between the upper light guide plate and the lower PCB board.

3. The dual-layer LED display module as described in claim 2, characterized in that: The lower light guide plate is composed of several lower light guide plate units arranged side by side. The positioning grid is provided with several positioning cavities for the lower light guide plate units to be embedded in. The number of positioning cavities is greater than or equal to the number of lower light guide plate units.

4. The dual-layer LED display module as described in claim 2, characterized in that: The upper light guide plate has a protrusion located in the middle of the upper light guide plate on the side near the lower PCB board, and the two positioning grilles and the outer shell form a groove area for the protrusion to be embedded.

5. The dual-layer LED display module as described in claim 4, characterized in that: The protrusion has a cuboid structure, and the contact between the protrusion and the positioning grille is either a line contact or a surface contact; the part of the positioning grille that contacts the protrusion is a reinforcing rib connecting the inner walls of the two parallel sides of the outer shell.

6. The dual-layer LED display module as described in claim 4, characterized in that: The protrusion and the upper light guide plate are an integral structure.

7. The dual-layer LED display module as described in claim 2, characterized in that: The positioning grille is integrally injection molded with the outer shell.

8. The dual-layer LED display module as described in claim 1, characterized in that: The reflective cavity contains a display module, and the reflective cavity is circular or elliptical. The upper light guide plate is provided with mounting holes for the upper light guide plate to pass through.

9. The dual-layer LED display module as described in claim 1, characterized in that: The upper superimposed PCB board is provided on both the upper and lower parallel sides of the lower light guide plate, and the upper and lower parallel sides of the lower light guide plate are arranged parallel to the long side of the outer shell.

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