LED (light-emitting diode) light-transmitting mirror with high light-gathering efficiency

Abstract

The utility model discloses an LED (light-emitting diode) light-transmitting mirror with high light-condensing efficiency, which comprises a lens body and a light-condensing column connected to the rear end of the lens body, the front end surface of the lens body is a light-emitting surface, and the rear end surface of the light-condensing column is a light-entering surface. The front end of the condensation column is composed of an upper boss, an extension column, a lower inclined plane and a lower boss which are sequentially connected from top to bottom, the rear end of the condensation column is a cylindrical body with the cross section gradually reduced from front to back, and the front end of the cylindrical body is connected with the tail end of the extension column. According to the utility model, the problem that the brightness cannot meet the requirement when the SMD-LED is used for the traffic display screen is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of LED display technology, specifically to a high-efficiency LED light-transmitting lens. Background Technology

[0002] LED (Light-Emitting Diode) is known as the fourth generation of lighting sources or green light sources. It features energy saving, environmental friendliness, long lifespan, and small size, and is widely used in various fields such as indicator lights, displays, decorations, backlights, general lighting, and urban nightscapes. An LED display screen is an electronic display device that displays text, images, and other information by controlling the on / off state of light-emitting diodes. Currently, its main applications include outdoor displays, advertising screens, and traffic display screens.

[0003] SMD (Surface Mounted Devices)-LEDs refer to surface-mount LEDs that are mounted on the surface of a circuit. They offer advantages such as mature and simple manufacturing processes, low cost, and small size, significantly reducing the cost and size of LED displays. To further enhance the display effect of SMD-LEDs in LED displays, especially increasing their brightness, a focusing lens is typically added to the light-emitting side of the SMD-LED. For example... Figure 1 As shown, the existing light-transmitting mirror structure mainly includes a lens body and a light-concentrating column connected to the rear end of the lens body. The front surface of the lens body is the light-emitting surface, through which light is emitted, while the rear surface of the light-concentrating column serves as the light-receiving surface, receiving the light emitted by the SMD-LED. This light-transmitting mirror structure can, to a certain extent, converge and guide light, thereby improving light utilization and enhancing the brightness of the SMD-LED.

[0004] However, in the specific application scenario of traffic LED displays, the brightness requirements are even more stringent. Traffic LED displays need to clearly display information under various complex environmental conditions (such as strong light and inclement weather) to ensure traffic safety. The existing SMD-LEDs with focusing lenses still cannot meet the brightness requirements of traffic LED displays. In practical applications, this results in problems such as unclear display content and limited viewing distance, seriously affecting the usability and safety of traffic LED displays.

[0005] Therefore, how to further improve the brightness of SMD-LEDs in traffic LED displays has become a pressing technical challenge. Utility Model Content

[0006] In order to overcome the problem that the brightness of SMD-LED LED beads in the prior art cannot meet the usage requirements, this utility model provides an LED light transmission lens with high light concentration efficiency.

[0007] The technical solution of this utility model is as follows:

[0008] A high-efficiency LED light-transmitting lens includes a lens body and a light-concentrating column connected to the rear end of the lens body. The front end of the lens body is the light-emitting surface, and the rear end of the light-concentrating column is the light-incoming surface. The front end of the light-concentrating column is composed of an upper boss, an extension column, a lower inclined surface, and a lower boss connected sequentially from top to bottom. The rear end of the light-concentrating column is a columnar body with a cross-section that gradually decreases from front to back. The front end of the columnar body is connected to the end of the extension column.

[0009] As a preferred embodiment of this utility model, the front end of the light-concentrating column is provided with inclined surfaces on the left and right sides.

[0010] As a preferred embodiment of this utility model, the surfaces of the upper boss and the lower boss are planes, arcs, or slopes.

[0011] As a preferred embodiment of this utility model, the cross-section of the rear end of the focusing column is rectangular.

[0012] As a preferred embodiment of this utility model, the cross-section of the rear end of the focusing column is circular.

[0013] As a preferred embodiment of this utility model, the cross-section of the rear end of the focusing column is a regular polygon or an irregular polygon.

[0014] As a preferred embodiment of this utility model, the light-emitting surface is a sphere.

[0015] As a preferred embodiment of this utility model, the light-emitting surface is a quadratic curved surface.

[0016] As a preferred embodiment of this utility model, the light-emitting surface is an elliptical surface.

[0017] As a preferred embodiment of this utility model, the rear end of the lens body is provided with a surrounding edge, which forms a cavity surrounding the front end of the focusing column.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The high-concentration-efficiency LED light-transmitting mirror provided by this utility model improves the light-concentrating column front end, thereby increasing the light-concentrating efficiency by more than 50% compared with existing light-transmitting mirrors, effectively solving the problem that the brightness of SMD-LEDs cannot meet the requirements when used in traffic displays.

[0020] 2. Red, green, and blue light rays are reflected multiple times within the focusing column, resulting in thorough mixing of the light and perfectly resolving the color distortion problem on the display screen;

[0021] 3. This LED light-transmitting lens can focus the light from large-angle SMD-LED lamp beads to a vertical angle range of -10° to +5° and a horizontal angle range of -15° to 15°, concentrating the remaining light within the viewing angle range, which greatly improves the brightness of a single pixel; at the same time, under the specified brightness requirements, it can greatly reduce the power consumption of the display screen, achieving energy-saving effect.

[0022] 4. This LED light-transmitting lens can change the light spot, transforming the circular light spot of the SMD-LED lamp bead into a rectangular light spot.

[0023] 5. Due to the downward polarization effect of the LED light-transmitting mirror, light pollution can be prevented. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a cross-sectional view of an existing lens;

[0026] Figure 2 This is a schematic diagram of the structure of a high-concentration-efficiency LED light-transmitting mirror in one embodiment of the present invention;

[0027] Figure 3 This is a side view of a high-concentration-efficiency LED light-transmitting mirror according to an embodiment of the present invention;

[0028] Figure 4 This is a top view of a high-concentration-efficiency LED light-transmitting mirror according to an embodiment of the present invention;

[0029] Figure 5 This is a side view of the light output of a high-concentration-efficiency LED light-transmitting mirror according to an embodiment of the present invention.

[0030] Figure 6 This is a top view of the light output of a high-concentration-efficiency LED light-transmitting mirror in one embodiment of the present invention.

[0031] Figure 7 This is a schematic diagram of the light-emitting spot of a high-concentration-efficiency LED light-transmitting mirror in one embodiment of the present invention;

[0032] Figure 8This is a schematic diagram of the structure of a high-concentration LED light-transmitting mirror in another embodiment of the present invention.

[0033] In the diagram,

[0034] 1. Lens body; 2. Condenser column; 21. Upper boss; 22. Extension column; 23. Lower bevel; 24. Lower boss; 25. Bevel; 26. Column; 3. Light-emitting surface; 4. Light-entering surface; 5. Surrounding edge; 6. Cavity. Detailed Implementation

[0035] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also declared that the embodiments described below are only for explaining this utility model and are not intended to limit this utility model.

[0036] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used in the application's product, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component 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 of this application.

[0037] Please see Figures 2 to 7This utility model provides a high-efficiency LED light-transmitting mirror, including a lens body 1 and a light-concentrating column 2 connected to the rear end of the lens body 1. The front end of the lens body 1 is the light-emitting surface 3, and the rear end of the light-concentrating column 2 is the light-incoming surface 4. The front end of the light-concentrating column 2 is composed of an upper boss 21, an extension column 22, a lower inclined surface 23, and a lower boss 24 connected sequentially from top to bottom. Inclined surfaces 25 are provided on the left and right sides of the front end of the light-concentrating column 2. The rear end of the light-concentrating column 2 is a columnar body 26 whose cross-section gradually decreases from front to back. The front end of the columnar body 26 is connected to the end of the extension column 22. The design of the focusing column 2, consisting of an upper protrusion 21, an extension column 22, a lower slope 23, and a lower protrusion 24 connected sequentially from top to bottom, plays a crucial role in improving focusing efficiency. Through optimized light reflection and guidance paths, the focusing efficiency is increased by over 50%. The sloped surfaces 25 on both sides of the front end of the focusing column 2 facilitate light reflection and propagation within the column, and also aid in light focusing, allowing the light to be emitted more concentratedly within a specific angle range. The rear end of the focusing column 2 is designed as a columnar body 26 with a gradually decreasing cross-section from front to back, which promotes light convergence and effectively guides the light emitted by the SMD-LED to the front end of the focusing column 2 for further processing. This fundamental guiding role in the entire process of light collection, focusing, and emission provides a basic guarantee for improving focusing efficiency.

[0038] The high-concentration-efficiency LED light-transmitting lens of this embodiment improves the front end of the concentrating column 2. Firstly, compared to existing light-transmitting lenses, the concentration efficiency is increased by more than 50%, effectively solving the problem of insufficient brightness when SMD-LEDs are used in traffic displays. Secondly, the red, green, and blue light rays are reflected multiple times within the concentrating column 2, resulting in thorough light mixing and perfectly resolving the color distortion problem of the display screen. Thirdly, it can focus the light from large-angle SMD-LED beads to a vertical angle range of -10° to +5°. Figure 5 The horizontal angle is in the range of -15° to 15°, such as Figure 6 By concentrating the remaining light within the viewing angle, the brightness of a single pixel is greatly improved; simultaneously, under specified brightness requirements, the power consumption of the display screen can be significantly reduced, achieving energy-saving effects; fourthly, the light spot can be changed, transforming the circular light spot of the SMD-LED beads into a rectangular light spot, such as... Figure 7 Fifthly, the downward polarization effect of the lens can prevent light pollution.

[0039] In one embodiment, the surfaces of the upper boss 21 and the lower boss 24 are planar. Alternatively, the surfaces of the upper boss 21 and the lower boss 24 can also be curved or inclined surfaces 25. When the surfaces of the upper boss 21 and the lower boss 24 are planar, the path of light when it contacts and reflects these surfaces is relatively regular, making it easier to calculate and control the reflection direction of the light. This may have certain advantages in achieving more precise light convergence and angle control, ensuring that the light propagates in a relatively fixed pattern within the focusing column 2, which helps improve the stability of the focusing and thus contributes to improving the overall focusing efficiency and the controllability of the light. This provides a stable effect in solving the brightness problem of traffic display screens. If the surfaces of the upper boss 21 and the lower boss 24 are curved, the shape of the curved surface can produce more complex path changes during light reflection, increasing the number of reflections and mixing opportunities within the focusing column 2, which is beneficial for further promoting the full mixing of red, green, and blue light. This design better addresses the color distortion issue of the display screen. Simultaneously, the curved surface guides and converges light more gently, potentially resulting in a more uniform angular distribution of light during emission, thus improving the uniformity of brightness per pixel. When the surfaces of the upper protrusion 21 and lower protrusion 24 are inclined planes 25, the reflection angle of light on the inclined planes 25 changes, altering the direction of light propagation and causing the light to converge at a specific angle. This allows for adjustment of the light emission angle range to a certain extent, providing more flexible control over focusing the light from large-angle SMD-LED beads to specific vertical and horizontal angle ranges. This better meets the needs for light angle distribution in different scenarios and helps prevent light pollution, allowing the light to be more concentrated and polarized downwards.

[0040] In one embodiment, the rear cross-section of the focusing column 2 is rectangular. Besides rectangles, the cross-section can also be circular, a regular polygon, or an irregular polygon. When the rear cross-section of the focusing column 2 is rectangular, the edges and corners are clearly defined. When light propagates within the rectangular cross-section of the focusing column 2, the reflection at the edges and corners is relatively fixed, which is beneficial for analyzing and optimizing the light propagation path. If the cross-section is circular, the circular structure makes the reflection of light within the focusing column 2 more uniform and symmetrical. Light can be reflected in various directions around the circumference, increasing the chance of light mixing and having a positive effect on solving the color distortion problem of the display screen. If the cross-section is a regular polygon, the multiple sides of the polygon can provide reflective surfaces at different angles, allowing light to undergo multiple reflections and refractions within the focusing column 2. This helps to change the direction and angle distribution of light propagation. If the cross-section is an irregular polygon, the cross-sectional shape of the irregular polygon is more complex and diverse. Its unique shape can be optimized for specific light propagation needs, enabling more personalized guidance and control of light, adapting to different light input conditions and output requirements.

[0041] In one embodiment, the light-emitting surface 3 is a sphere. Alternatively, the light-emitting surface 3 can also be a quadratic surface or an elliptical surface. When the light-emitting surface 3 is a sphere, the geometric characteristics of the sphere allow light to diffuse or converge to a certain extent when emitted. Depending on the curvature of the sphere, the emission angle and distribution range of the light can be adjusted, and the spherical light-emitting surface 3 can create a relatively symmetrical light distribution in space. When the light-emitting surface 3 is a quadratic surface, the quadratic surface has more flexible optical characteristics, allowing for precise control of the light propagation path and angle according to specific design requirements. By adjusting the parameters of the quadratic surface, more precise convergence or divergence of light can be achieved, better meeting the requirements of different application scenarios for light angle and intensity distribution. When the light-emitting surface 3 is an elliptical surface, the reflection and refraction of light on the elliptical surface will change according to the shape of the ellipse and the incident angle of the light, which can achieve special angle control and convergence effect of light. In practical applications, the elliptical light-emitting surface 3 can make the light diffuse or converge to different degrees in the vertical and horizontal directions, which helps to adjust the angle distribution of light to better meet the needs of application scenarios such as traffic display screens. At the same time, it may also have unique advantages in improving the brightness of individual pixels and preventing light pollution.

[0042] Please see Figure 8 In one embodiment, a perimeter 5 is provided at the rear end of the lens body 1, forming a cavity 6 surrounding the front end of the focusing column 2. The perimeter 5 is not connected to the optically effective portion of the lens body 1, or is completely disconnected from the lens body 1, thus forming the cavity 6. This prevents the sealant from adhering to the lens body 1 in structures requiring encapsulation, thus preventing brightness loss.

[0043] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0044] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other situations without modification, are all within the protection scope of the present utility model.

Claims

1. A high light collection efficiency LED light transmission lens, comprising a lens body and a light collection column connected to the rear end of the lens body, the front end surface of the lens body is a light exit surface, and the rear end surface of the light collection column is a light entrance surface, characterized in that, The front end of the focusing column is composed of an upper boss, an extension column, a lower inclined surface, and a lower boss connected in sequence from top to bottom. The rear end of the focusing column is a columnar body with a cross-section that gradually decreases from front to back. The front end of the columnar body is connected to the end of the extension column.

2. The high light extraction efficiency LED light transmitting lens according to claim 1, wherein, The front end of the focusing column has inclined surfaces on both the left and right sides.

3. The high light extraction efficiency LED light transmitting lens of claim 1, wherein, The surfaces of the upper boss and the lower boss are flat, curved, or inclined.

4. The high light extraction efficiency LED light transmitting lens of claim 1, wherein, The cross-section of the rear end of the focusing column is rectangular.

5. The high light extraction efficiency LED light transmitting lens of claim 1, wherein, The cross-section of the rear end of the focusing column is circular.

6. The high-LEF LED light-transmitting lens of claim 1, wherein, The cross-section of the rear end of the focusing column is a regular polygon or an irregular polygon.

7. The high-LEF LED light-transmitting lens of claim 1, wherein, The light-emitting surface is spherical.

8. The high-LEF LED light-transmitting lens of claim 1, wherein, The light-emitting surface is a quadratic curved surface.

9. The high-LEF LED light-transmitting lens of claim 1, wherein, The light-emitting surface is an elliptical surface.

10. The high-LEF LED light-transmitting lens of claim 1, wherein, The rear end of the lens body is provided with a surrounding edge, which forms a cavity surrounding the front end of the focusing column.

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