Novel light-emitting diode (LED) light-transmitting mirror

Abstract

The utility model discloses a novel light-emitting diode (LED) light-transmitting mirror, which comprises a lens body and a light-gathering column connected to the rear end of the lens body, the front end face of the lens body is a light-emitting face, the rear end face of the light-gathering column is a light-entering face, and the novel LED light-transmitting mirror is characterized in that the front end of the light-gathering column is composed of an upper boss, an extension column and a lower boss which are sequentially connected from top to bottom; the front end face of the upper boss and the upper portion of the front end face of the extension column form a first lower inclined face, the lower portion of the front end face of the extension column and the lower boss form a second lower inclined face, the front end of the cylindrical body is connected with the tail end of the extension column, a lens boss is arranged at the rear end of the lens body, a first groove is formed in the lens boss, and the first groove is located around the outer edge of the light emitting face. Second grooves are formed in the lower sides of the lens boss and the lower boss. 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 novel 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 existing technology cannot meet the usage requirements, this utility model provides a new type of LED light-transmitting lens.

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

[0008] A novel LED light-transmitting lens includes a lens body and a focusing column connected to the rear end of the lens body. The front end face of the lens body is the light-emitting surface, and the rear end face of the focusing column is the light-incoming surface. The front end of the focusing column is composed of an upper boss, an extension column, and a lower boss connected sequentially from top to bottom. The front end face of the upper boss and the upper part of the front end face of the extension column form a first downward slope, and the lower part of the front end face of the extension column and the lower boss form a second downward slope. The front end of the column is connected to the end of the extension column. A lens boss is provided at the rear end of the lens body. A first groove is provided on the lens boss, which is located around the outer edge of the light-emitting surface. A second groove is provided on the lower side of the lens boss and the lower boss.

[0009] As a preferred embodiment of this utility model, the first lower inclined surface and the second lower inclined surface are parallel to the cross-section of the focusing column.

[0010] As a preferred embodiment of this utility model, the first lower inclined surface and the second lower inclined surface are at an angle to the cross-section of the focusing column.

[0011] As a preferred embodiment of this utility model, the first lower inclined surface and the second lower inclined surface are two parallel or intersecting surfaces.

[0012] 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.

[0013] As a preferred embodiment of this utility model, the surfaces of the upper boss and the lower boss are planes, arcs, or slopes.

[0014] As a preferred embodiment of this utility model, the rear end of the focusing column is a columnar body with a cross-section that gradually decreases from front to back.

[0015] As a preferred embodiment of this utility model, the cross-section of the rear end of the focusing column is rectangular, circular, regular polygonal, or irregular polygonal.

[0016] In a preferred embodiment of this utility model, the light-emitting surface is a spherical surface, a quadratic surface, or an elliptical surface, and the light-receiving surface is a plane.

[0017] As a preferred embodiment of this utility model, the rear end of the lens body is provided with a rim, the rim is connected to the optically effective part of the upper part of the focusing column, and the remaining part forms a cavity with the focusing column.

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

[0019] 1. The novel LED light-transmitting mirror provided by this utility model improves the light-concentrating efficiency by more than 50% compared with the existing light-transmitting mirrors by improving the front end of the light-concentrating column, 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 the novel LED light-transmitting mirror in one embodiment of the present invention;

[0027] Figure 3 This is a structural schematic diagram of the novel LED light-transmitting mirror from another perspective in one embodiment of the present invention;

[0028] Figure 4 This is a side view of a novel LED light-transmitting mirror according to an embodiment of the present invention;

[0029] Figure 5 This is a top view of a novel LED light-transmitting mirror according to an embodiment of the present invention;

[0030] Figure 6 This is a side view of the light emission of the novel LED light-transmitting mirror in one embodiment of the present invention;

[0031] Figure 7 This is a top view of the light emission of the novel LED light-transmitting mirror in one embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the light-emitting spot of the novel LED light-transmitting mirror in one embodiment of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the novel LED light-transmitting mirror in another embodiment of the present invention.

[0034] In the diagram,

[0035] 1. Lens body; 2. Condenser column; 21. Upper boss; 22. Extension column; 23. Lower boss; 24. First lower slope; 25. Second lower slope; 26. Sloping surface; 27. Columnar body; 3. Light emitting surface; 4. Light entering surface; 5. Lens boss; 51. First groove; 52. Second groove; 6. Surrounding edge; 7. Cavity. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] Please see Figures 2 to 8This utility model provides a novel LED light-transmitting mirror, including a lens body 1 and a focusing column 2 connected to the rear end of the lens body 1. The front end face of the lens body 1 is the light-emitting surface 3, and the rear end face of the focusing column 2 is the light-entering surface 4. The front end of the focusing column 2 is composed of an upper boss 21, an extension column 22, and a lower boss 23 connected sequentially from top to bottom. The front end face of the upper boss 21 and the upper part of the front end face of the extension column 22 form a first lower inclined surface 24, and the lower part of the front end face of the extension column 22 and the lower boss 23 form a second lower inclined surface 25. The front end of the column 27 is connected to the end of the extension column 22. A lens boss 5 is provided at the rear end of the lens body 1. A first groove 51 is provided on the lens boss 5, which is located around the outer edge of the light-emitting surface 3. A second groove 52 is provided on the lower side of the lens boss 5 and the lower boss 23. Specifically, by designing the front end of the focusing column 2 as an upper protrusion 21, an extension column 22, and a lower protrusion 23 connected sequentially from top to bottom, and designing a lens protrusion 5, a first groove 51, and a second groove 52 at the rear end of the lens body 1, multi-angle reflection and convergence of light are achieved. This not only improves the light-gathering efficiency by more than 50%, but also promotes color mixing and solves the color cast problem by extending the path of light within the column. The first lower slope 24 and the second lower slope 25 can guide light to refract downwards, reducing energy loss from upward scattering. At the same time, in conjunction with the structure of the lens protrusion 5, they optimize the angle at which light enters the lens body 1, improving the light-emitting efficiency. The first groove 51 surrounds the outer edge of the light-emitting surface 3. Through the groove structure, it reduces the total internal reflection loss of light at the lens edge and guides the edge light to converge towards the center, improving the brightness uniformity of the light-emitting surface 3. The second groove 52, through its concave design, changes the reflection path of light, further suppressing stray light scattered downwards, enhancing the vertical light-gathering effect, and simultaneously assisting in downward polarization, reducing light pollution.

[0039] This novel LED light-transmitting mirror improves the front end of the focusing column 2. Firstly, its focusing efficiency is increased by more than 50% compared to existing light-transmitting mirrors, 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 focusing 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 6 The horizontal angle is in the range of -15° to 15°, such as Figure 7 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 8Fifthly, the downward polarization effect of the lens helps prevent light pollution.

[0040] In one embodiment, the first lower slope 24 and the second lower slope 25 are parallel to the cross-section of the focusing column 2, and the reflection path of light in the vertical direction (such as the up and down direction) is strictly limited, which can effectively compress light at the vertical angle (such as compressing the vertical divergence angle from a large angle to -10° to +5°), which is suitable for scenarios that require high vertical concentration (such as increasing the longitudinal visibility distance of traffic display screens).

[0041] Of course, in other embodiments, the first lower slope 24 and the second lower slope 25 are also at an angle to the cross-section of the focusing column 2. The angle of the slope 26 causes light to be refracted / reflected simultaneously in the vertical and horizontal directions, which can compress the divergence angle in both directions at the same time (such as compressing the horizontal angle from a large angle to -15° to +15°), which is especially suitable for scenarios that require all-round focusing (such as the multi-angle visibility of traffic display screens in complex environments).

[0042] In one embodiment, the first lower slope 24 and the second lower slope 25 are two parallel surfaces. The parallel slopes 26 form a "sandwich" structure, and light is reflected parallel between the upper and lower slopes 26, which can achieve layered focusing (such as the upper slope 26 focusing the upper half of the light and the lower slope 26 focusing the lower half of the light), avoiding interference between light from different angles and improving the focusing stability.

[0043] Of course, in other embodiments, the first lower slope 24 and the second lower slope 25 can also be two intersecting surfaces, which can force light from different directions to the central area to form a strong focusing effect and significantly improve the central brightness (such as the peak brightness of a single pixel), which is suitable for scenarios that require long-distance visibility.

[0044] Please see Figure 8 In one embodiment, the front left and right sides of the focusing column 2 are provided with inclined surfaces 26. By setting the front left and right sides of the focusing column 2 as inclined surfaces 26, it helps the light to reflect and propagate in the focusing column 2, and also has a certain auxiliary effect on the focusing of the light, so that the light can be emitted more concentratedly within a specific angle range.

[0045] In one embodiment, the surfaces of the upper boss 21 and the lower boss 23 are planar. Alternatively, the surfaces of the upper boss 21 and the lower boss 23 can also be curved or inclined. When the surfaces of the upper boss 21 and the lower boss 23 are planar, the path of light reflecting off these surfaces is relatively regular, making it easier to calculate and control the reflection direction. This may have advantages in achieving more precise light convergence and angle control, ensuring that light propagates in a relatively fixed pattern within the focusing column 2, thus improving the stability of light concentration and contributing to improving overall focusing efficiency and light controllability. 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 23 are curved, the shape of the curved surface allows for 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 absorption of red, green, and blue light. The combination of different surfaces 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 angle distribution of light during emission, which helps improve the uniformity of brightness per pixel. When the surfaces of the upper protrusion 21 and lower protrusion 23 are inclined, the reflection angle of light on the inclined surface 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.

[0046] Please see Figure 2 , Figure 4 In one embodiment, the rear end of the focusing column 2 is a columnar body 27 with a cross-section that gradually decreases from front to back, which is conducive to the convergence of light and can more effectively guide the light emitted by the SMD-LED to the front end of the focusing column 2 for further processing. It plays a basic guiding role in the entire process of light collection, convergence and emission, and provides a basic guarantee for light transmission to improve the focusing efficiency in the future.

[0047] 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.

[0048] In one embodiment, the light-emitting surface 3 is a sphere, and the light-entering surface 4 is a plane. 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.

[0049] Please see Figure 9 In one embodiment, the rear end of the lens body 1 is provided with a perimeter 6, which is connected to the upper part of the condenser column 2 with optical effect, and the remaining part forms a cavity 7 between the perimeter 6 and the condenser column 2. In this way, in the structure that requires potting and sealing, the perimeter 6 can prevent the sealant from sticking to the lens body 1, which would result in a loss of brightness.

[0050] 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.

[0051] 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 novel LED light-transmitting lens comprising a lens body and a light collecting column connected to the rear end of the lens body, the front end surface of the lens body being a light exit surface, and the rear end surface of the light collecting column being a light entrance surface, characterized in that, The front end of the focusing column is composed of an upper boss, an extension column, and a lower boss connected sequentially from top to bottom. The front end face of the upper boss and the upper part of the front end face of the extension column form a first downward slope, and the lower part of the front end face of the extension column and the lower boss form a second downward slope. 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. A lens boss is provided at the rear end of the lens body. A first groove is provided on the lens boss. The first groove is located around the outer edge of the light-emitting surface. A second groove is provided on the lower side of the lens boss and the lower boss.

2. The novel LED light-transmitting mirror according to claim 1, characterized in that, The first and second lower inclined surfaces are parallel to the cross-section of the focusing column.

3. The novel LED light-transmitting mirror according to claim 1, wherein, The first and second lower inclined surfaces are at an angle to the cross-section of the focusing column.

4. The novel LED light-transmitting mirror according to claim 1, characterized in that, The first and second lower slopes are two parallel or intersecting surfaces.

5. The novel LED light-transmitting mirror according to claim 1, wherein, The front end of the focusing column has inclined surfaces on both the left and right sides.

6. The novel LED light-transmitting mirror according to claim 1, wherein, The surfaces of the upper boss and the lower boss are flat, curved, or inclined.

7. The novel LED light-transmitting mirror according to claim 1, wherein, The cross-section of the rear end of the focusing column is rectangular, circular, regular polygonal, or irregular polygonal.

8. The novel LED light-transmitting mirror according to claim 1, characterized in that, The light-emitting surface is a sphere, a quadratic surface, or an elliptical surface, and the light-receiving surface is a plane.

9. The novel LED light-transmitting mirror according to claim 1, wherein, The rear end of the lens body is provided with a rim, which is connected to the optically effective part of the upper part of the focusing column, and the remaining part forms a cavity with the focusing column.

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