Light guide strip capable of uniformly emitting light

Abstract

The utility model belongs to the technical field of optical light guide, and particularly relates to a uniform light-emitting light guide strip, which comprises a light guide strip for guiding light rays of an LED lamp bead, reflective films for concentrating the light rays in the light guide strip are arranged on two sides of the light guide strip, and the reflective films also shield the front light rays of the LED lamp bead. The face, attached to the reflective film, of the light guide strip is provided with reflection points for reflecting light back to the light guide strip. The reflecting points arranged on the two surfaces of the light guide strip are irregularly distributed, so that light rays can be effectively reflected back into the light guide plate according to the distribution condition of the light rays in the light guide plate, the light rays are prevented from being concentrated in some areas, and the uniformity is ensured; the arc-shaped surface arranged close to the corner groove enables light to be smoothly transited in the corner groove, so that light concentration and reflection loss are reduced; the reflective films arranged on the two side faces of the light guide strip can effectively prevent light leakage, meanwhile, the good lamp bead leakage prevention effect can be achieved, and the performance and the attractiveness are ensured.

Description

Technical Field

[0001] This utility model belongs to the field of optical light guide technology, specifically relating to a uniform light guide strip. Background Technology

[0002] Optical light guiding is a technology that utilizes the propagation properties of light to guide and transmit light rays. Its principle is based on fundamental optical phenomena such as light refraction and reflection, and through specific materials, structures, and designs, it guides light to a designated location or path.

[0003] In existing technologies, light guide plates often exhibit uneven light emission. This is mainly because, when light emitted from the light source (such as LEDs) propagates within the light guide plate, imperfections in the plate's structural design and optical performance prevent it from dispersing the light evenly across the emitting surface. Furthermore, some light guide plates are prone to "LED leakage" in the light source mounting area. LED leakage refers to the ability to directly see the LEDs' light on the light guide plate's emitting surface. This not only affects aesthetics but also leads to excessively high local light intensity, reducing display quality.

[0004] To address the aforementioned issues, this application proposes a uniform light-emitting light guide strip. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a uniform light-emitting light guide strip, which solves the problems of uneven light emission and leakage of LED beads.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a uniform light-emitting light guide strip, comprising a light guide strip for guiding the light of LED beads, a reflective film on both sides of the light guide strip to concentrate the light in the light guide strip, the reflective film also blocking the front light of the LED beads, and a reflection point on the surface of the light guide strip that is attached to the reflective film to reflect the light back into the light guide strip;

[0007] The light guide strip has a recessed corner groove and an arc-shaped surface on one side to change the direction of light propagation. The corner groove is L-shaped and smoothly connected to the arc-shaped surface. The radius of the arc-shaped surface is between 3-7mm. The corner groove and the arc-shaped surface cause the light to be refracted and reflected multiple times inside the light guide strip before being emitted evenly. The corner groove and the arc-shaped surface are also located in front of the LED beads and shield them.

[0008] As a preferred technical solution of this utility model, the top of the light guide strip is the light-inlet surface facing the LED lamp bead, and the bottom is the light-outlet surface after the light passes through the light guide strip.

[0009] As a preferred technical solution of this utility model, one side of the light guide strip is provided with an arc-shaped groove that blocks the light from the front through a reflective film.

[0010] As a preferred technical solution of this utility model, the front light passes through the two reflective films 2 twice each.

[0011] As a preferred embodiment of this utility model, the arc-shaped groove, the corner groove, and the arc-shaped surface are diagonally distributed, and the corner groove is located at the end closer to the light-emitting surface.

[0012] As a preferred embodiment of this utility model, the reflection point is a circular protrusion with a diameter between 0.6 and 0.8 mm.

[0013] As a preferred embodiment of this utility model, the light guide strip is fixedly provided with mounting ears for connection.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The reflection points set on the two sides of the light guide strip are irregularly distributed, which can effectively reflect the light back into the light guide plate according to the distribution of the light in the light guide plate, avoid the light from concentrating in certain areas, and ensure uniformity.

[0016] The curved surface located near the corner slot allows light to transition smoothly through the corner slot, reducing light concentration and reflection loss;

[0017] The reflective film set on both sides of the light guide strip can effectively prevent light leakage and also play a good role in preventing the leakage of lamp beads, ensuring performance and aesthetics.

[0018] In summary, when an LED emits light, the light is reflected inside the light guide strip by the reflective film, and then through multiple reflections and refractions by the arc groove, corner groove, and arc surface, it is finally evenly emitted from the light-emitting surface, achieving good light uniformity and the effect of shielding the light of the LED beads. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0022] Figure 3 This is a side view of the structure of this utility model;

[0023] In the diagram: 1. Light guide strip; 11. Light inlet surface; 12. Light outlet surface; 13. Arc groove; 14. Corner groove; 15. Arc surface; 2. Reflective film; 3. Reflection point; 4. Mounting ear. Detailed Implementation

[0024] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] Please see Figure 1-3 This utility model provides the following technical solution: a uniform light-emitting light guide strip, comprising a light guide strip 1 for guiding the light from LED beads, reflective films 2 on both sides of the light guide strip 1 to concentrate the light in the light guide strip 1, and the reflective films 2 also blocking the front light from the LED beads. Reflection points 3 are provided on the surface of the light guide strip 1 that adhere to the reflective films 2 to reflect the light back into the light guide strip 1. In this embodiment, the shape of the light guide strip 1 can be designed according to actual needs, such as a straight line, a curved line, or a ring. Simultaneously, the surface of the light guide strip 1 can be specially treated, such as frosting or polishing, and the light emission effect can be changed by adding titanium dioxide, light-diffusing agents, etc.

[0027] The light guide strip 1 has a recessed corner groove 14 and an arc surface 15 on one side to change the direction of light propagation. The corner groove 14 is L-shaped and smoothly connected to the arc surface 15. The radius of the arc surface 15 is between 3-7mm. The corner groove 14 and the arc surface 15 cause the light to be refracted and reflected multiple times inside the light guide strip 1 before being emitted evenly. The corner groove 14 and the arc surface 15 are also located in front of the LED beads and shield them. The arc surface 15 can evenly transition the light to the light emission surface 12. Then, in combination with the corner groove 14, it can not only ensure the uniformity of light emission, but also hide the LED beads from the front.

[0028] Specifically, the top of the light guide strip 1 is the light-inlet surface 11 facing the LED lamp bead, and the bottom is the light-outlet surface 12 after the light passes through the light guide strip 1.

[0029] Specifically, one side of the light guide strip 1 is provided with an arc-shaped groove 13 that blocks the light from the front through the reflective film 2. In this embodiment, the arc-shaped groove 13 and the corner groove 14 set diagonally are formed inward, so that the light-entry surface 11 and the light-exit surface 12 are in a facing state while forming a refraction point.

[0030] Specifically, the number of times the light passes through the two reflective films 2 is 2. In this embodiment, the number of times the light passes through the reflective films 2 can be set according to actual needs.

[0031] Specifically, the arc-shaped groove 13, the corner groove 14, and the arc-shaped surface 15 are diagonally distributed. The corner groove 14 is located at the end closest to the light-emitting surface 12. In this embodiment, the arc-shaped groove 13, the corner groove 14, and the arc-shaped surface 15 are all set on the front side where the light shines directly, so that the direct light is repeatedly refracted and reflected to ensure the brightness of the light output, while also providing a shielding effect for the lamp beads.

[0032] Specifically, the reflection point 3 is a circular protrusion with a diameter between 0.6 and 0.8 mm. In this embodiment, the protrusion of the reflection point 3 can reflect the light emitted from inside the light guide strip 1 back into the light guide strip 1. The reflection point 3 is distributed on both sides of the light guide strip 1.

[0033] Specifically, the light guide strip 1 is fixedly provided with mounting ears 4 for connection. In this embodiment, the mounting ears 4 are set according to the required connection position on the device to ensure that the light-inlet surface 11 is directly facing the LED lamp bead.

[0034] Working principle and usage process of this utility model:

[0035] Install the light guide strip 1 into the appropriate position by installing the ear 4, so that the light-inlet surface 11 faces the LED lamp bead;

[0036] When the LED emits light, the light shines on the light-inlet surface 11. Due to the presence of the reflective film 2, most of the light is reflected into the light guide strip 1. The light passes through the arc groove 13, the arc surface 15 and the corner groove 14. Due to the shape characteristics, the direction of light propagation changes. It no longer shines directly towards the light-outlet surface 12, but after multiple reflections and refractions inside the light guide plate, it shines out uniformly from the light-outlet surface 12.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A uniform light-emitting light guide strip, characterized in that: The light guide (1) is provided on both sides of the light guide (1) to concentrate the light in the light guide (1). The reflective film (2) also blocks the front light of the LED beads. The surface of the light guide (1) that is attached to the reflective film (2) is provided with a reflection point (3) to reflect the light back into the light guide (1). The light guide strip (1) has a concave corner groove (14) and an arc surface (15) on one side to change the direction of light propagation. The corner groove (14) is L-shaped and smoothly connected to the arc surface (15). The radius of the arc surface (15) is between 3-7mm. The corner groove (14) and the arc surface (15) cause the light to be refracted and reflected multiple times inside the light guide strip (1) and finally emitted uniformly. The corner groove (14) and the arc surface (15) are also located in front of the LED beads and shield them.

2. The uniform light-emitting light guide strip according to claim 1, characterized in that: The top of the light guide strip (1) is the light-inlet surface (11) facing the LED lamp beads, and the bottom is the light-outlet surface (12) after the light passes through the light guide strip (1).

3. The uniform light-emitting light guide strip according to claim 1, characterized in that: The light guide strip (1) has an arc-shaped groove (13) on one side that blocks the light from the front through the reflective film (2).

4. The uniform light-emitting light guide strip according to claim 3, characterized in that: The front light passes through the two reflective films (2) twice each.

5. A uniform light-emitting light guide strip according to claim 3, characterized in that: The arc-shaped groove (13), the corner groove (14), and the arc-shaped surface (15) are diagonally distributed, with the corner groove (14) located at the end closest to the light-emitting surface (12).

6. The uniform light-emitting light guide strip according to claim 1, characterized in that: The reflection point (3) is a circular protrusion with a diameter between 0.6 and 0.8 mm.

7. A uniform light-emitting light guide strip according to claim 1, characterized in that: The light guide strip (1) is fixedly provided with mounting ears (4) for connection.

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