LED display device

Abstract

The utility model provides a light-emitting diode (LED) display device, which comprises a lamp panel, a first light source, a second light source and an LED light source, the light guide part is arranged on the front side of the lamp panel, a first light guide channel is formed in the light guide part, the first light guide channel penetrates through the front surface and the rear surface of the light guide part, a first light passing hole is formed in the position, on the rear surface of the light guide part, of the first light guide channel, and the first light passing hole corresponds to the first lamp bead; and the light guide column is arranged in the first light guide channel. According to the technical scheme, the problem that an LED display device in the related technology cannot perform directional display is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of LED display technology, and more specifically, to an LED display device. Background Technology

[0002] LED display devices in related technologies include a light board. The light board includes a PCB board and LED chips disposed on the front surface of the PCB board. The LED chips display different colors to enable the light board to display images.

[0003] The images displayed by LED display devices in related technologies are identical regardless of the viewing angle. This ensures that the image seen by the LED display device is the same for observers from all directions, and the LED display devices in related technologies cannot provide directional display. Utility Model Content

[0004] The main objective of this invention is to provide an LED display device to solve the problem that LED display devices in related technologies cannot provide directional display.

[0005] To achieve the above objectives, this utility model provides an LED display device, comprising: a lamp board, including a PCB board and a first LED bead disposed on the front surface of the PCB board; a light guide, disposed on the front side of the lamp board, wherein a first light guide channel is provided on the light guide, the first light guide channel penetrates the front and rear surfaces of the light guide, and a first light-passing hole is formed on the rear surface of the light guide, the first light-passing hole being correspondingly disposed with the first LED bead; and a light guide post disposed within the first light guide channel.

[0006] Furthermore, the light board also includes a second LED, which is spaced apart from the first LED on the front surface of the PCB board. The light guide is also provided with a second light guide channel, which runs through the front and rear surfaces of the light guide. The second light guide channel forms a second light-passing hole on the rear surface of the light guide, and the second light-passing hole is correspondingly provided with the second LED. The extension direction of the first light guide channel is set at an angle to the extension direction of the second light guide channel.

[0007] Furthermore, there are multiple first LEDs and multiple first light guide channels, with each first LED corresponding to a different first light guide channel, and the multiple first light guide channels extending in the same direction, so that the multiple first light guide channels form a first viewing area; and / or, there are multiple second LEDs and multiple second light guide channels, with each second LED corresponding to a different second light guide channel, and the multiple second light guide channels extending in the same direction, so that the multiple second light guide channels form a second viewing area.

[0008] Furthermore, the LED display device also includes a convex lens disposed between the first LED bead and the light guide, the convex lens being disposed corresponding to the first light-passing hole.

[0009] Furthermore, the light guide is provided with a receiving groove that is connected to the first light guide channel, the convex lens is located in the receiving groove, and the first light-passing hole is provided on the groove wall of the receiving groove.

[0010] Furthermore, the light guide post contacts and engages with the convex lens.

[0011] Furthermore, the ratio of the length of the light guide post along the extension direction of the first light guide channel to the diameter of the convex lens is greater than 0 and less than or equal to 1.5.

[0012] Furthermore, the light board also includes a third LED bead, which is spaced apart from the first LED bead on the front surface of the PCB board. The light guide is a rectangular block, which includes a sidewall connecting the front surface and the rear surface of the light guide. The light guide also has a third light guide channel, which penetrates the front surface and the sidewall of the light guide. The third light guide channel is correspondingly arranged with the third LED bead.

[0013] Furthermore, a third light-passing hole is formed on the front surface of the light guide in the first light guide channel, and there is a preset distance between the end face of the light guide post facing the third light-passing hole and the third light-passing hole.

[0014] Furthermore, the LED display device also includes a waterproof adhesive layer disposed between the PCB board and the light guide, the waterproof adhesive layer surrounding the outside of the LED beads.

[0015] The LED display device, utilizing the technical solution of this utility model, includes a lamp board, a light guide, and a light guide post. The lamp board includes a PCB board and a first LED bead disposed on the front surface of the PCB board. The light guide is disposed on the front side of the lamp board. A first light guide channel is provided on the light guide, extending through both the front and rear surfaces of the light guide. A first light-passing hole is formed on the rear surface of the light guide, corresponding to the first LED bead. The light guide post is disposed within the first light guide channel. Thus, the light emitted by the first LED bead can be transmitted to the outside of the LED display device through the first light guide channel. The first light guide channel guides the light emitted by the first LED bead, so that an observer located along the extension direction of the first light guide channel can see the light emitted by the first LED bead, while an observer located on one side of the extension direction of the first light guide channel cannot see the light emitted by the first LED bead. This allows observers in different directions to see different images displayed by the LED display device, enabling directional display. Therefore, the technical solution of this application effectively solves the problem of directional display in related technologies. Furthermore, the first light-passing aperture is correspondingly positioned to the first LED chip, improving the transmission effect of the light emitted by the first LED chip through the first light guide channel, thus enhancing the display effect of the LED display device. The light guide column transmits and guides the light emitted by the first LED chip. Through the light guide column, the light can propagate along a predetermined path, ensuring that the light accurately passes through the first light-passing aperture and reaches the predetermined observation position. Moreover, the light guide column reduces light loss during transmission, improving light transmission efficiency and display brightness, thereby enhancing the display effect of the LED display device. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A perspective structural schematic diagram of an embodiment of the LED display device according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A three-dimensional structural schematic diagram of a partial cross-section of an LED display device;

[0019] Figure 3 It shows Figure 2 A magnified view of part A of the LED display device;

[0020] Figure 4 It shows Figure 1 An exploded view of the LED display device;

[0021] Figure 5 It shows Figure 1 A partial cross-sectional schematic diagram of an LED display device.

[0022] The above figures include the following reference numerals:

[0023] 10. LED board; 11. First LED chip; 12. Second LED chip; 13. Third LED chip; 14. PCB board;

[0024] 20. Light guide component; 21. First light guide channel; 22. Second light guide channel; 23. Third light guide channel; 24. First light-passing hole; 25. Second light-passing hole; 26. Third light-passing hole; 27. Receiving groove; 28. Side wall;

[0025] 30. Light guide column;

[0026] 40. Convex lens;

[0027] 50. Waterproof adhesive layer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] In this embodiment, as Figures 1 to 5 As shown, the LED display device includes a lamp board 10, a light guide 20, and a light guide post 30. The lamp board 10 includes a PCB board 14 and a first LED bead 11 disposed on the front surface of the PCB board 14. The light guide 20 is disposed on the front side of the lamp board 10. A first light guide channel 21 is provided on the light guide 20, which penetrates the front and rear surfaces of the light guide 20. A first light-passing hole 24 is formed on the rear surface of the light guide 20 through the first light guide channel 21, and the first light-passing hole 24 is correspondingly disposed with respect to the first LED bead 11. The light guide post 30 is disposed within the first light guide channel 21.

[0030] In this way, the light emitted by the first LED bead 11 can be transmitted to the outside of the LED display device through the first light guide channel 21. The first light guide channel 21 guides the light emitted by the first LED bead 11 so that an observer located in the extension direction of the first light guide channel 21 can see the light emitted by the first LED bead 11, while an observer located on one side of the extension direction of the first light guide channel 21 cannot see the light emitted by the first LED bead 11. This results in different images being seen by observers in different directions, enabling the LED display device to display directionally. Therefore, the technical solution of this application effectively solves the problem of LED display devices not being able to display directionally in related technologies. Furthermore, the first light-passing hole 24 is correspondingly arranged with the first LED bead 11, improving the transmission effect of the light emitted by the first LED bead 11 through the first light guide channel 21 and improving the display effect of the LED display device. The light guide column 30 can transmit and guide the light emitted by the first LED bead 11. Through the light guide column 30, the light can propagate along a predetermined path, ensuring that the light can accurately pass through the first light-passing hole 24 and reach the predetermined observation position. Furthermore, the light guide column 30 can reduce light loss during transmission, improve light transmission efficiency and display brightness, and enhance the display effect of LED display devices.

[0031] like Figures 1 to 5 As shown, the light board 10 also includes a second LED bead 12, which is spaced apart from the first LED bead 11 on the front surface of the PCB board 14. A second light guide channel 22 is also provided on the light guide component 20, extending through both the front and rear surfaces of the light guide component 20. A second light-passing hole 25 is formed on the rear surface of the light guide component 20 by the second light guide channel 22, and the second light-passing hole 25 is correspondingly positioned to the second LED bead 12. The extension direction of the first light guide channel 21 is angled to the extension direction of the second light guide channel 22. This allows an observer located along the extension direction of the second light guide channel 22 to see the light emitted by the second LED bead 12, enabling the LED display device to simultaneously display different images from multiple viewing angles, enhancing the scene's three-dimensionality and information density, and providing users with richer visual information.

[0032] By applying the technical solution of this embodiment, an observer can see different displayed content by changing the viewing angle from the same observation point, thereby making the display effect richer and more realistic, and restoring the true image space. This allows the observer to see the effect of objects appearing larger when closer and smaller when farther away from the same observation point.

[0033] like Figures 1 to 5As shown, there are multiple first LED beads 11 and multiple first light guide channels 21, with each first LED bead 11 corresponding to a different first light guide channel 21. The multiple first light guide channels 21 extend in the same direction, forming a first viewing area. Similarly, there are multiple second LED beads 12 and multiple second light guide channels 22, with each second LED bead 12 corresponding to a different second light guide channel 22. The multiple second light guide channels 22 extend in the same direction, forming a second viewing area. By configuring multiple first LED beads 11 and multiple first light guide channels 21, and multiple second LED beads 12 and multiple second light guide channels 22 in a one-to-one correspondence, a first viewing area and a second viewing area can be formed. This enables the device to divide the display into multiple independent display areas, allowing the observer to see different images from different viewing angles, thus enhancing the flexibility and application range of the display.

[0034] In other embodiments, there are multiple first LED beads 11 and multiple first light guide channels 21, with each first LED bead 11 corresponding to a different first light guide channel 21. The multiple first light guide channels 21 extend in the same direction, so that the multiple first light guide channels 21 form a first viewing area. Alternatively, there are multiple second LED beads 12 and multiple second light guide channels 22, with each second LED bead 12 corresponding to a different second light guide channel 22. The multiple second light guide channels 22 extend in the same direction, so that the multiple second light guide channels 22 form a second viewing area.

[0035] like Figures 1 to 5 As shown, the LED display device also includes a convex lens 40 disposed between the first LED bead 11 and the light guide 20, with the convex lens 40 corresponding to the first light-passing aperture 24. The convex lens 40 can concentrate light and improve the light transmission effect. At the same time, through the imaging characteristics of the convex lens 40, it can improve image clarity and color saturation, thereby enhancing the display effect.

[0036] like Figures 1 to 5 As shown, the light guide 20 is provided with a receiving groove 27 that communicates with the first light guide channel 21. The convex lens 40 is located inside the receiving groove 27, and the first light-passing hole 24 is located on the groove wall of the receiving groove 27. This design not only protects the convex lens 40 but also ensures efficient light transmission, reduces light leakage, and improves the display effect.

[0037] like Figures 1 to 5 As shown, the light guide column 30 is in contact with the convex lens 40. This allows light from the first LED 11 to enter the light guide column 30 more directly after passing through the convex lens 40, reducing light loss during transmission, thereby improving light transmission efficiency and optimizing the display effect of the display device.

[0038] like Figures 1 to 5 As shown, the ratio of the length of the light guide post 30 along the extension direction of the first light guide channel 21 to the diameter of the convex lens 40 is greater than 0 and less than or equal to 1.5. This ratio, within a reasonable range, ensures efficient focusing and transmission of light, avoids light scattering or absorption problems caused by excessively long or short light guide posts 30, and further improves the light efficiency and clarity of the display device.

[0039] In this embodiment, the ratio of the length of the light guide post 30 along the extension direction of the first light guide channel 21 to the diameter of the convex lens 40 is 1.5. In other embodiments, the ratio of the length of the light guide post 30 along the extension direction of the first light guide channel 21 to the diameter of the convex lens 40 is preferably 1.5, 1.3, 1.1, 0.9, 0.7, 0.5, 0.3, or 0.1.

[0040] like Figures 1 to 5 As shown, the lamp board 10 also includes a third LED bead 13, which is spaced apart from the first LED bead 11 on the front surface of the PCB board 14. The light guide 20 is a rectangular block, and includes a sidewall 28 connecting the front surface and the rear surface of the light guide 20. A third light guide channel 23 is also provided on the light guide 20, which penetrates the front surface and the sidewall 28 of the light guide 20, and is correspondingly arranged with the third LED bead 13. This allows the LED display device to display images not only on the planar viewing area of ​​the front surface of the light guide 20, but also on the side surface of the sidewall 28 of the light guide 20, expanding the display range of the image and providing more display space and visual effects for the LED display device.

[0041] In this embodiment, the light guide 20 is a rectangular block, and the front surface of the light guide 20 is a plane. In other embodiments, the front surface of the light guide 20 is a curved surface.

[0042] like Figures 1 to 5 As shown, the first light guide channel 21 forms a third light-passing hole 26 on the front surface of the light guide 20, and there is a preset distance between the end face of the light guide post 30 facing the third light-passing hole 26 and the third light-passing hole 26. The preset distance can reduce the mutual interference between the light refracted by the light guide post 30 and other light, can accurately control the diffusion range of the light emitted by the third lamp bead 13, avoid light crosstalk, and ensure the independence and display quality of the display image seen from each viewing angle.

[0043] like Figures 1 to 5As shown, the LED display device also includes a waterproof adhesive layer 50 disposed between the PCB board 14 and the light guide 20, with the waterproof adhesive layer 50 surrounding the outside of the LED beads. The waterproof adhesive layer 50 effectively prevents moisture from entering between the LED board 10 and the light guide 20, protecting the internal circuitry from damage, extending the lifespan of the LED display device, and increasing the possibility of outdoor use, thus broadening its application areas.

[0044] In this embodiment, the LEDs on the LED panel 10 include a first LED 11, a second LED 12, and a third LED 13. Multiple LEDs on the LED panel 10 form multiple pixels, each pixel including multiple pixel points, and each pixel point including one LED. Each pixel point displays a different image controlled by a driver IC. The magnified image is transmitted to the outside of the LED display device via a light guide 20, a convex lens 40, and a light guide column 30. Each image is displayed in a specific direction by the LEDs controlled by the driver IC. The driving part of the LED display device includes a driver IC, a PCB board 14, and an LED controller.

[0045] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An LED display device, characterized in that, include: The lamp board (10) includes a PCB board (14) and a first lamp bead (11) disposed on the front surface of the PCB board (14); A light guide (20) is disposed on the front side of the lamp plate (10). A first light guide channel (21) is provided on the light guide (20). The first light guide channel (21) penetrates the front and rear surfaces of the light guide (20). A first light-passing hole (24) is formed on the rear surface of the light guide (20) by the first light guide channel (21). The first light-passing hole (24) is correspondingly disposed with the first lamp bead (11). A light guide column (30) is disposed within the first light guide channel (21).

2. The LED display device according to claim 1, characterized in that, The lamp board (10) further includes a second lamp bead (12), which is spaced apart from the first lamp bead (11) on the front surface of the PCB board (14). The light guide (20) is also provided with a second light guide channel (22), which penetrates the front and rear surfaces of the light guide (20). The second light guide channel (22) forms a second light-passing hole (25) on the rear surface of the light guide (20), and the second light-passing hole (25) is correspondingly provided with the second lamp bead (12). The extension direction of the first light guide channel (21) is set at an angle to the extension direction of the second light guide channel (22).

3. The LED display device according to claim 2, characterized in that, There are multiple first LED beads (11) and multiple first light guide channels (21), with each of the multiple first LED beads (11) corresponding to one of the multiple first light guide channels (21). The multiple first light guide channels (21) extend in the same direction, so that the multiple first light guide channels (21) form a first viewing area; and / or, There are multiple second lamp beads (12) and multiple second light guide channels (22). The multiple second lamp beads (12) and multiple second light guide channels (22) are arranged in a one-to-one correspondence. The multiple second light guide channels (22) extend in the same direction so that the multiple second light guide channels (22) form a second viewing area.

4. The LED display device according to claim 1, characterized in that, The LED display device further includes a convex lens (40) disposed between the first lamp bead (11) and the light guide (20), and the convex lens (40) is disposed corresponding to the first light-passing hole (24).

5. The LED display device according to claim 4, characterized in that, The light guide (20) is provided with a receiving groove (27) that communicates with the first light guide channel (21), the convex lens (40) is located in the receiving groove (27), and the first light-passing hole (24) is provided on the groove wall of the receiving groove (27).

6. The LED display device according to claim 4, characterized in that, The light guide post (30) is in contact with the convex lens (40).

7. The LED display device according to claim 6, characterized in that, The ratio of the length of the light guide post (30) along the extension direction of the first light guide channel (21) to the diameter of the convex lens (40) is greater than 0 and less than or equal to 1.

5.

8. The LED display device according to claim 1, characterized in that, The lamp board (10) also includes a third lamp bead (13), which is spaced apart from the first lamp bead (11) on the front surface of the PCB board (14). The light guide (20) is a rectangular block, which includes a sidewall (28) connecting the front surface and the rear surface of the light guide (20). The light guide (20) is also provided with a third light guide channel (23), which penetrates the front surface and the sidewall (28) of the light guide (20). The third light guide channel (23) is correspondingly arranged with the third lamp bead (13).

9. The LED display device according to claim 1, characterized in that, The first light guide channel (21) forms a third light passage hole (26) on the front surface of the light guide (20), and the end face of the light guide post (30) facing the third light passage hole (26) has a preset distance from the third light passage hole (26).

10. The LED display device according to claim 1, characterized in that, The LED display device also includes a waterproof adhesive layer (50) disposed between the PCB board (14) and the light guide (20), the waterproof adhesive layer (50) surrounding the outside of the LED beads.

Images