Light guide structure and intelligent mirror light guide device

Abstract

The light guide structure comprises a light guide plate, the light guide plate is provided with a light reflecting cambered surface, a light emitting surface and a light incoming surface, the light reflecting cambered surface and the light emitting surface are located on the two sides of the light guide plate respectively and are oppositely arranged, the light incoming surface is located on the upper portion of the light guide plate, and the light reflecting cambered surface is gradually bent towards the light emitting surface from top to bottom. The light-emitting face is a plane, and the light guide plate is made of light-transmitting materials. According to the utility model, brand new light distribution design is carried out on an original light path, the light emitting direction is optimized, brand new light distribution is carried out by adopting light guide and total reflection, the light is conducted according to a specified direction, finally, light rays irradiated from a light inlet surface can be uniformly irradiated out from a light outlet surface, the structure is simple, and the effect is remarkable.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent mirrors, in particular to a light guide structure and a light guide device for an intelligent mirror. Background Art

[0002] The existing smart mirror design is to add a side-illuminating light strip behind the lampshade. Some lampshades are mouth-shaped surrounding the mirror body, some are placed on both sides or upper and lower edges of the mirror body, and some are L-shaped along one side and bottom edge of the mirror body. However, no matter what shape the lampshade is, the light emitted by the light strip has a large angle and cannot be transmitted forward collectively. In places far away from the light source of the light strip, after the light is transmitted and diverged over a certain distance, the light directly in front is greatly attenuated, and its light intensity decreases rapidly with increasing distance, so that it can be seen at the edge of the mirror that the inside is obviously brighter than the outside, resulting in obvious uneven light emission. The overall lighting effect of the product is poor, giving people an intuitive feeling that the product is of low grade, with obvious defects and reduced product competitiveness. Utility Model Content

[0003] The utility model aims to solve at least one of the above technical problems in the related art to a certain extent. To this end, the utility model proposes a light guide structure.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The utility model also provides an intelligent mirror light guiding device with the light guiding structure.

[0006] According to the first aspect of the present invention, the light guiding structure comprises a light guiding plate, wherein the light guiding plate has a reflective arc surface, a light emitting surface and a light incident surface, wherein the reflective arc surface and the light emitting surface are respectively arranged on two sides of the light guiding plate and are opposite to each other, the light incident surface is arranged on the upper part of the light guiding plate, the reflective arc surface gradually bends toward the light emitting surface from top to bottom, the light emitting surface is a plane, and the material of the light guiding plate is a light-transmitting material.

[0007] The light guide structure according to the embodiment of the utility model has at least the following beneficial effects:

[0008] 1. One side of the light guide plate is designed to be curved, so the total reflection angle of the light changes. The light starts from the light-incoming surface and reaches the reflective curved surface, and then it is totally reflected. When it passes through the light-emitting surface of the planar structure, the angle changes and no total reflection occurs, so most of the light is refracted from the light-emitting surface. This design allows more light to pass through the far end of the light guide plate away from the light-incoming surface, making it brighter. In the end, the light intensity at each position of the light-emitting surface is similar, and the overall effect of uniform light emission is presented. Installing the light guide plate along the edge of the smart mirror can solve the problem that the inside is obviously brighter than the outside and the light emission is uneven.

[0009] 2. The utility model carries out a new light distribution design for the original light path, optimizes the light output direction, and adopts light guide + total reflection to distribute the light in a new way, so that the light can be transmitted in the specified direction, and finally the light entering the light input surface can be evenly emitted from the light output surface, with simple structure and remarkable effect.

[0010] According to some embodiments of the utility model, a diffuser is also included, and the diffuser is in a thin plate structure, and the diffuser is attached to the light-emitting surface. The diffuser has a diffusion effect and scatters the incident light, so that the uneven incident light becomes more uniform after scattering. The diffuser is close to the light-emitting surface, and when the light from the light-emitting surface reaches the diffuser, it is mixed and evenly dispersed from the exposed surface to achieve a uniform effect.

[0011] According to some embodiments of the present invention, a first light strip is further included, and the first light strip is installed on the light inlet surface. Light is emitted from the lamp beads in the light strip, and enters the light guide plate from the light inlet surface after passing through a small gap.

[0012] According to some embodiments of the utility model, a groove for mounting the first light strip is formed on the upper portion of the light guide plate, and the light-incoming surface is the surface at the bottom of the groove. The light strip is embedded in the groove, and the light strip and the light guide plate form an integrated design, which not only improves the light output rate of the light strip, increases the brightness, but also improves the firmness of the device.

[0013] According to some embodiments of the utility model, the reflective arc surface and the light emitting surface meet at the bottom of the light guide plate. The bottom of the light guide plate is the intersection line of the reflective arc surface and the light emitting surface, and there is no plane structure at the bottom, ensuring that most of the light is refracted from the light emitting surface after total reflection from the reflective arc surface.

[0014] According to some embodiments of the utility model, the reflective arc surface, the light emitting surface and the light inlet surface are polished. The polishing of the reflective arc surface and the light emitting surface will reduce the scattering loss of light, so that more total reflection occurs after the light enters the light guide plate, which is conducive to the light reflecting and refracting back and forth in the light guide plate and irradiating forward, so that the light propagates farther in the light guide plate. Polishing the light inlet surface will greatly increase the brightness of the light.

[0015] According to some embodiments of the utility model, the material of the light guide plate is one of PC, PMMA, glass or PP. These materials are all light-transmitting materials. Different materials have different refractive indices, qualities, and quality, which will affect the adjustment and effect of the overall solution, but the principle remains unchanged, and the appropriate material is selected according to actual needs.

[0016] According to the smart mirror light guide device of the second aspect embodiment of the utility model, it includes the light guide structure, the light guide plate is long and strip-shaped and installed along the edge of the back side of the smart mirror body, the upper part of the light guide plate is in contact with the back side of the smart mirror body, the lower part protrudes from the edge of the smart mirror body, and the light emitting surface is facing the front direction of the smart mirror.

[0017] According to some embodiments of the utility model, at least two light guide plates are provided, each light guide plate is installed along the edge of the smart mirror body and connected to each other at the corner of the smart mirror body to form a turning part, a corner connection block is fixed on the turning part, the material of the corner connection block is the same as that of the light guide plate, a second light strip is provided on the corner connection block, the arrangement direction of the second light strip intersects with the arrangement direction of the first light strip, and the two ends of the second light strip are respectively connected to the first light strip on the light guide plate on both sides of the corner connection block. In the existing smart mirror, since the light is directly emitted in the lampshade, the angle of light cannot be changed, resulting in some places such as the corners of the mirror not being irradiated with light, so that the light at the corner of the mirror is obviously dimmed, giving people an intuitive feeling that the product has obvious defects and low product grade. The utility model has a corner connection block spliced ​​at the junction of the two light guide plates, so that the corner of the light guide plate can be seamlessly connected, and the second light strip is used to illuminate the corner alone, so as to strengthen the corner lighting and solve the dark corner problem.

[0018] According to some embodiments of the utility model, the corners of the smart mirror body are right angles, the turning part is a right-angle turning part, the corner connecting block is a right-angled triangle structure, and the two right-angled sides are respectively connected to the light guide plates on both sides of the corner connecting block, and the arrangement direction of the second light strip is parallel to the direction of the hypotenuse of the corner connecting block. The second light strip is beveled at 45 degrees to ensure that the light emitted at the corner is evenly distributed.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] FIG1 is a schematic structural diagram of a light guide structure of the utility model;

[0022] FIG2 is a partial enlarged view of point A in FIG1;

[0023] FIG3 is a side view of the light guide structure of the utility model;

[0024] FIG4 is a schematic diagram of the light flow in the light guide plate of the present invention;

[0025] FIG5 is a schematic diagram of the structure of the light guide device of the smart mirror of the utility model (the back of the smart mirror);

[0026] FIG6 is a schematic diagram of the light direction of the light guide device of the intelligent mirror of the present invention.

[0027] Reference numerals: light guide plate 100 , reflective arc surface 110 , light emitting surface 120 , light incident surface 130 , diffuser plate 200 , first light strip 300 , smart mirror body 400 , corner connecting block 500 , second light strip 600 . DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0029] 1-4, a light guide structure includes a light guide plate 100, wherein the light guide plate 100 has a reflective arc surface 110, a light emitting surface 120 and a light incident surface 130, wherein the reflective arc surface 110 and the light emitting surface 120 are respectively located on two sides of the light guide plate 100 and are arranged opposite to each other, and the light incident surface 130 is located at the upper part of the light guide plate 100, and the reflective arc surface 110 gradually bends toward the light emitting surface 120 from top to bottom, and the light emitting surface 120 is a plane, and the material of the light guide plate 100 is a light-transmitting material.

[0030] In some embodiments of the present invention, a diffuser plate 200 is further included. The diffuser plate 200 is a thin plate structure and is attached to the light-emitting surface 120. The diffuser plate 200 has a diffusion effect and scatters the incident light, so that the uneven incident light becomes more uniform after scattering. The diffuser plate 200 is closely attached to the light-emitting surface 120. When the light from the light-emitting surface 120 reaches the diffuser plate 200, it is mixed and evenly dispersed from the exposed surface to achieve a uniform effect.

[0031] In some embodiments of the present invention, a first light strip 300 is further included, and the first light strip 300 is installed on the light-incoming surface 130. Light is emitted from the lamp beads in the light strip, and enters the light guide plate 100 from the light-incoming surface 130 after passing through a small gap.

[0032] In some embodiments of the present invention, a groove for mounting the first light strip 300 is formed on the upper portion of the light guide plate 100, and the light-incoming surface 130 is the lowermost surface in the groove. The light strip is embedded in the groove, and the light strip and the light guide plate 100 form an integrated design, which not only improves the light output rate of the light strip, increases the brightness, but also improves the firmness of the device.

[0033] In some embodiments of the present invention, the reflective arc surface 110 and the light emitting surface 120 intersect at the bottom of the light guide plate 100. The bottom of the light guide plate 100 is the intersection of the reflective arc surface 110 and the light emitting surface 120, and there is no plane structure at the bottom, ensuring that most of the light is refracted from the light emitting surface 120 after being fully reflected from the reflective arc surface 110.

[0034] In some embodiments of the present invention, the reflective arc surface 110, the light emitting surface 120 and the light inlet surface 130 are polished. The polishing of the reflective arc surface 110 and the light emitting surface 120 will reduce the scattering loss of light, so that more total reflection occurs after the light enters the light guide plate 100, which is conducive to the light reflecting and refracting back and forth in the light guide plate 100 and irradiating forward, so that the light propagates farther in the light guide plate 100. Polishing the light inlet surface 130 will greatly increase the brightness of the light.

[0035] In some embodiments of the present invention, the material of the light guide plate 100 is one of PC, PMMA, glass or PP. These materials are all light-transmitting materials, and different materials have different refractive indices, different qualities, and different qualities, which will affect the adjustment and effect of the overall solution, but the principle remains unchanged, and the appropriate material is selected according to actual needs.

[0036] 3-6, a light guide device for a smart mirror includes a light guide structure, wherein the light guide plate 100 is in a long strip shape and is installed along the edge of the back side of the smart mirror body 400, the upper portion of the light guide plate 100 is in contact with the back side of the smart mirror body 400, the lower portion protrudes from the edge of the smart mirror body 400, and the light emitting surface 120 is facing the front side of the smart mirror.

[0037] In some embodiments of the present invention, at least two light guide plates 100 are provided, each light guide plate 100 is respectively installed along the edge of the smart mirror body 400 and connected with each other at the corners of the smart mirror body 400 to form a turning portion, and a corner connecting block 500 is fixedly provided on the turning portion. The material of the corner connecting block 500 is the same as that of the light guide plate 100, and a second light strip 600 is provided on the corner connecting block 500. The arrangement direction of the second light strip 600 intersects with the arrangement direction of the first light strip 300, and the two ends of the second light strip 600 are respectively connected to the first light strip 300 on the light guide plate 100 on both sides of the corner connecting block 500. The existing smart mirror has obvious dark corners at the corners of the mirror, which gives people an intuitive feeling that the product has obvious defects and is of low quality. The utility model has a corner connecting block 500 spliced ​​at the connection between the two light guide plates 100, so that the corners of the light guide plates 100 can be seamlessly connected, and the second light strip 600 is used to illuminate the corners separately, thereby strengthening the corner lighting and solving the dark corner problem.

[0038] In some embodiments of the present invention, the corners of the smart mirror body 400 are right angles, the turning part is a right-angle turning part, the corner connecting block 500 is a right-angled triangle structure, and the two right-angled sides are respectively connected to the light guide plates 100 on both sides of the corner connecting block 500, and the arrangement direction of the second light strip 600 is parallel to the direction of the hypotenuse of the corner connecting block 500. The second light strip 600 is set at a 45-degree bevel to ensure that the light emitted at the corner is evenly distributed.

[0039] The light guide plate 100 is cut to different lengths according to the actual size requirements of different smart mirrors. The size and appearance of the light guide device for different models of smart mirror products will be slightly different, but the effect of achieving light distribution and integrating accessories is the same. The integrated light guide solution of the utility model can achieve the effect of brightening and light uniformity, while also reducing the complexity of product parts and assembly, reducing costs, and can greatly improve the reliability of the device, improve product performance and product competitiveness.

[0040] The following is a specific embodiment of the intelligent mirror light guide device of the utility model:

[0041] A smart mirror light guide device is formed by two long strips of light guide plates 100 connected in an L shape. The light guide plates 100 are made of fully transparent acrylic material. The two sides of the light guide plates 100 are provided with oppositely arranged reflective arc surfaces 110 and light emitting surfaces 120. A groove is opened on the upper part, and a first light strip 300 is embedded in the groove. The reflective arc surface 110 is gradually bent toward the light emitting surface 120 from top to bottom. The light emitting surface 120 is a plane. A diffuser plate 200 is attached to the light emitting surface 120. The diffuser plate 200 is a brown acrylic thin plate. The diffuser plate 200 completely covers the light emitting surface 120. The reflective arc surface 110, the light emitting surface 120 and the lowermost surface in the groove (the light inlet surface 130) are all polished. The light guide plate 100 is installed along the edge of the back side of the smart mirror body 400. The upper part of the light guide plate 100 is in contact with the back side of the smart mirror body 400, and the lower part protrudes from the edge of the smart mirror body 400. One side of the diffuser plate 200 faces the front side of the smart mirror. A corner connecting block 500 made of a fully transparent acrylic material is fixed on the right-angle turning part formed by the two light guide plates 100 connected to each other. The corner connecting block 500 is a right-angled triangle structure, and the two right-angled sides are respectively connected to the light guide plates 100 on both sides of the corner connecting block 500. A second light strip 600 is installed along the hypotenuse of the corner connecting block 500. The two ends of the second light strip 600 are respectively connected to the first light strip 300 on the light guide plates 100 on both sides to form a continuous light strip arrangement. The first light strip 300 and the second light strip 600 are LED light strips, and the light guide plate 100 adopts a one-time extrusion molding process.

[0042] The above-mentioned smart mirror light guide device is designed by integrating multiple accessories, and uses light guide + total reflection to distribute light in a new way, so that the light can be transmitted in a specified direction, and finally the light in the embedded light strip can be evenly irradiated onto the brown acrylic plate. A special module is designed for corners, and the corner connection block 500 is used to enhance the corner lighting and solve the dark corner problem. The light guide plate 100 is placed behind the mirror and the brown acrylic sheet, and is completely invisible from the front. The user will not feel the existence of the light guide plate 100 at all, and it does not affect the appearance of the product.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A light guide structure, characterized in that: The invention comprises a light guide plate (100), wherein the light guide plate (100) has a reflective arc surface (110), a light emitting surface (120) and a light input surface (130), wherein the reflective arc surface (110) and the light emitting surface (120) are respectively located on two sides of the light guide plate (100) and are arranged opposite to each other, the light input surface (130) is located at the upper part of the light guide plate (100), the reflective arc surface (110) is gradually bent from top to bottom toward the light emitting surface (120), the light emitting surface (120) is a plane, and the material of the light guide plate (100) is a light-transmitting material.

2. The light guide structure according to claim 1, characterized in that: It also comprises a diffusion plate (200), the diffusion plate (200) being in a thin plate structure, and the diffusion plate (200) being attached to the light emitting surface (120).

3. The light guide structure according to claim 1, characterized in that: It also includes a first light strip (300), wherein the first light strip (300) is installed on the light-incoming surface (130).

4. The light guide structure according to claim 3, characterized in that: The upper part of the light guide plate (100) is provided with a groove for mounting the first light strip (300), and the light-incoming surface (130) is the surface located at the lowermost end of the groove.

5. The light guide structure according to claim 1, characterized in that: The light-reflecting arc surface (110) and the light-emitting surface (120) intersect at the bottom end of the light guide plate (100).

6. The light guide structure according to claim 1, characterized in that: The light reflecting curved surface (110), the light emitting surface (120) and the light entering surface (130) are polished.

7. The light guide structure according to claim 1, characterized in that: The material of the light guide plate (100) is one of PC, PMMA, glass or PP.

8. A smart mirror light guide device, characterized in that: The light guide structure comprises the light guide structure as claimed in any one of claims 3 to 4, wherein the light guide plate (100) is in a long strip shape and is installed along the edge of the back side of the smart mirror body (400), the upper part of the light guide plate (100) is in contact with the back side of the smart mirror body (400), the lower part protrudes from the edge of the smart mirror body (400), and one side of the light emitting surface (120) faces the front direction of the smart mirror.

9. The smart mirror light guide device according to claim 8, characterized in that: At least two light guide plates (100) are provided, each light guide plate (100) is installed along the edge of the smart mirror body (400) and connected to each other at the corners of the smart mirror body (400) to form a turning portion, a corner connecting block (500) is fixedly provided on the turning portion, the material of the corner connecting block (500) is the same as that of the light guide plate (100), a second light strip (600) is provided on the corner connecting block (500), the arrangement direction of the second light strip (600) intersects with the arrangement direction of the first light strip (300), and the two ends of the second light strip (600) are respectively connected to the first light strip (300) on the light guide plates (100) on both sides of the corner connecting block (500).

10. The smart mirror light guide device according to claim 9, characterized in that: The corners of the smart mirror body (400) are right angles, the turning portion is a right-angle turning portion, the corner connecting block (500) is a right-angled triangle structure, and the two right-angled sides are respectively connected to the light guide plates (100) on both sides of the corner connecting block (500), and the arrangement direction of the second light strip (600) is parallel to the direction of the hypotenuse of the corner connecting block (500).

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