Light guide capable of emitting light from multiple sides and light guide structure

Abstract

The utility model provides a light guide and a light guide structure capable of emitting light from multiple sides, the light guide comprises at least two rows of grooves arranged on the side surface of the light guide along the axial direction of the light guide, the surface of the light guide between every two grooves is a cambered surface, each row of grooves is provided with two opposite tooth surfaces, and a plurality of light guide teeth are distributed on each tooth surface. Wherein the light guide teeth of one tooth surface face the cambered surface adjacent to the tooth surface, the light guide teeth of the other tooth surface face the cambered surface adjacent to the other tooth surface, light enters the light guide from one end or two ends of the light guide and is reflected by the light guide teeth, and the reflected light is emitted from the corresponding cambered surface. According to the utility model, one light guide irradiates at least two positions, so that the effect of lightening at least two positions is realized.

Description

Technical Field

[0001] This utility model relates to the field of optics, specifically to a multi-sided light-emitting light guide and light guide structure. Background Technology

[0002] In the interior ambient lighting, due to a specific customer requirement, light needs to shine from the same location to both sides. Current solutions use two light guides placed back-to-back, illuminating each side separately. For example... Figures 1 to 3 As shown, this scheme consists of two LEDs, two light guides, two lenses, and a bracket 400. The light from LED 101 enters light guide 201 and shines through the light guide teeth on light guide 201 onto lens 301 on the left side of the diagram. The lens is made of a light-transmitting material, so the light shines out through the lens. Similarly, the light from LED 102 also shines through light guide 202 onto lens 302, ultimately creating the effect of both lens 301 and lens 302 being lit simultaneously. Figure 3 The arrows on the left and right represent the paths of light rays after reflection through the corresponding optical guide teeth.

[0003] However, this solution requires two LEDs and two light guides, which increases the cost. Furthermore, in actual production, differences between LEDs can lead to inconsistent brightness between Lens301 and Lens302, resulting in poor illumination.

[0004] Therefore, it is necessary to provide a new technical solution. Utility Model Content

[0005] To address the technical problems existing in the prior art, this utility model discloses a multi-sided light-emitting light guide and its structure, which illuminates at least two positions with a single light guide, achieving the effect of lighting up at least two positions. The specific technical solution is as follows:

[0006] On one hand, this utility model provides a multi-sided light guide, with at least two rows of grooves formed on the side surface of the light guide along its axial direction, and the light guide surface between each pair of grooves being an arc surface.

[0007] Each row of grooves has two opposing tooth surfaces, and multiple optical guide teeth are distributed on each tooth surface. The optical guide teeth on each tooth surface face the arc surface adjacent to that tooth surface.

[0008] Light enters the light guide from one or both ends, is reflected by the light guide teeth, and then exits from the arc surface corresponding to the light guide teeth.

[0009] Furthermore, the grooves are evenly spaced apart, the length of the groove is less than or equal to the length of the light guide, the opening width of the groove is less than the width of the arc surface, and / or

[0010] At least two rows of grooves are formed on the side of the light guide, and the light guide emits light from both sides.

[0011] Furthermore, the light guide surface between each pair of grooves is an elliptical arc surface.

[0012] Each tooth surface has a smooth transition to the adjacent arc surface.

[0013] Furthermore, the groove is a V-shaped groove, and the two opposite surfaces of the V-shaped groove are toothed surfaces. The number of optical guide teeth on each toothed surface is the same, and the length of the multiple optical guide teeth arranged on each toothed surface is less than or equal to the length of the groove.

[0014] Furthermore, the optical guide teeth are prismatic, rectangular, and / or spherical, and the optical guide teeth have a concave structure and / or a convex structure.

[0015] Furthermore, one or both ends of the light guide are light-incident ends. Along the length of the light guide, the light-incident end has a light-incident segment and a light guide splicing segment. One end of the light guide splicing segment is connected to the light-incident segment, and the other end is connected to the light-outcrystal segment. The groove is located in the light-outcrystal segment.

[0016] On the other hand, this utility model also provides a light guide structure, including a bracket, a lens, a light source, and the light guide described above.

[0017] The bracket and lens form a receiving cavity with openings at both ends. The light guide is located in the receiving cavity, and one or both ends of the light guide extend out of the receiving cavity from the openings. The bracket is located on the side of the groove, and the lens is located on the side of the arc surface. Light emitted from the arc surface illuminates the corresponding lens.

[0018] The light source is located at one or both ends of the light guide.

[0019] Furthermore, the bracket is flat, and along the length of the bracket, the side of the bracket facing the groove has a protrusion that matches the shape of the groove.

[0020] Furthermore, the protrusion is located within the groove, and there is a gap between the protrusion and the groove.

[0021] Furthermore, the light source is a single LED light source. This invention has the following beneficial effects:

[0022] (1) The multi-sided light-emitting light guide structure of this utility model illuminates at least two positions with one light guide, achieving the effect of lighting at least two positions. Moreover, it only requires one LED, reducing the number of LEDs and the number of light guides, which is conducive to cost reduction.

[0023] (2) The multi-sided light guide structure of this utility model uses one LED to illuminate at least two positions, avoiding the difference in illumination effect on both sides due to different LEDs, which is conducive to improving the product's illumination optical effect.

[0024] (3) The multi-sided light-emitting light guide structure of this utility model reduces the number of parts, which is beneficial to the installation and fixation of parts. At the same time, the shape of the light guide changes from a circle to a double ellipse, which is beneficial to the stability of product installation.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.

[0027] Figure 1 This is a schematic diagram of a dual-sided light-emitting design scheme in the prior art;

[0028] Figure 2 for Figure 1 A schematic diagram of the combination;

[0029] Figure 3 for Figure 2 A cross-sectional schematic diagram;

[0030] Figure 4 This is a schematic diagram of the dual-sided light-emitting light guide structure of this utility model in one embodiment;

[0031] Figure 5 for Figure 4 A schematic diagram of the combined structure;

[0032] Figure 6 for Figure 5 A cross-sectional schematic diagram;

[0033] Figure 7 for Figure 4 Schematic diagram of the structure of the optical waveguide;

[0034] Figure 8 for Figure 7 A cross-sectional schematic diagram;

[0035] Figure 9 This is a schematic diagram of the optical path of the double-sided light-emitting light guide structure of this utility model;

[0036] Figure 10 This is a schematic diagram of the optical guide of this utility model in another embodiment.

[0037] Among them, 1-light guide, 11-groove, 111-first groove, 112-second groove, 12-arc surface, 121-first light-emitting surface, 122-second light-emitting surface, 13-tooth surface, 14-light guide tooth, 141-first light guide tooth, 142-second light guide tooth, 143-third light guide tooth, 144-fourth light guide tooth, 15-incident light segment, 16-light guide splicing segment, 17-light-emitting segment, 2-support, 21-first support, 22-second support, 23-protrusion, 3-lens, 31-first lens, 32-second lens, 4-light source, 5-accommodating cavity. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] Please see Figure 4 and Figure 10 , Figure 4 This is a schematic diagram of the dual-sided light-emitting light guide structure of this utility model in one embodiment; Figure 5 for Figure 4 A schematic diagram of the combined structure; Figure 6 for Figure 5A cross-sectional schematic diagram; Figure 7 for Figure 4 Schematic diagram of the structure of the optical waveguide; Figure 8 for Figure 7 A cross-sectional schematic diagram; Figure 9 This is a schematic diagram of the optical path of the double-sided light-emitting light guide structure of this utility model; Figure 10 This is a schematic diagram of the optical guide of this utility model in another embodiment.

[0042] like Figure 7 As shown, this utility model provides a double-sided light guide 1, which is columnar. Along the axial direction of the light guide 1, two rows of grooves 11 are equally spaced on its side surface. The length direction of the grooves 11 is consistent with the length direction of the light guide 1, and the length of the grooves 11 is less than or equal to the length of the light guide 1. For ease of description, the two rows of grooves are referred to below as the first groove and the second groove. Figure 7 and Figure 8 As shown, the first groove 111 and the second groove 112 are arranged opposite to each other and symmetrically.

[0043] like Figures 4 to 8 As shown, the two light-guiding surfaces between the first groove 111 and the second groove 112 are arc surfaces 12, namely the first light-emitting surface 121 and the second light-emitting surface 122. Preferably, the first light-emitting surface 121 and the second light-emitting surface 122 are both symmetrical elliptical arc surfaces. This invention designs the light guide 1 as a symmetrical elliptical arc surface shape, which not only ensures symmetrical light emission from both sides of the light guide but also improves the stability of the product installation. The opening width of the groove 11 is smaller than the width of the elliptical arc surface, thereby increasing the light emission amount from the arc surface of the light guide. In this embodiment, the groove 11 is arranged in two rows. In other embodiments, the grooves can also be arranged in at least three rows, with equal intervals between each pair of grooves, and the light-guiding surface between each pair of adjacent grooves is the light-emitting surface. This invention, depending on the actual situation, by setting the grooves to three or more rows and the light-emitting surfaces to multiple locations, enables a single light guide to emit light from multiple sides simultaneously, thereby illuminating the light-emitting side positions.

[0044] Please continue reading. Figure 7 and Figure 8Furthermore, each row of grooves 11 has two opposing tooth surfaces 13. Preferably, the groove 11 is a V-shaped groove, and the two opposing surfaces of the V-shaped groove are tooth surfaces 13. Multiple light guide teeth 14 are distributed on each tooth surface 13, with the same number of light guide teeth on each tooth surface 13. The length of the arrangement of the multiple light guide teeth 14 on each tooth surface 13 is less than or equal to the length of the V-shaped groove. The light guide teeth on one tooth surface face the adjacent arc surface, i.e., the first light-emitting surface 121, and the light guide teeth on the other tooth surface face the adjacent arc surface, i.e., the second light-emitting surface 122. In this embodiment, for ease of description, the light guide teeth on the four tooth surfaces are respectively referred to as the first light guide tooth 141, the second light guide tooth 142, the third light guide tooth 143, and the fourth light guide tooth 144, wherein the first light guide tooth 141 and the third light guide tooth 143 face the first light-emitting surface 121, and the second light guide tooth 142 and the fourth light guide tooth 144 face the second light-emitting surface 122.

[0045] Please continue reading. Figure 8 Furthermore, each tooth surface has a smooth transition with the adjacent arc surface, that is, one tooth surface 13 of each groove 11 has a smooth transition with the first light-emitting surface 121 adjacent to the tooth surface, and the other tooth surface 13 has a smooth transition with the second light-emitting surface 122 adjacent to the tooth surface.

[0046] Please continue reading. Figure 7 and Figure 8 Furthermore, the optical guide tooth 14 is prismatic, rectangular and / or spherical, and the optical guide tooth 14 has a concave structure and / or a convex structure.

[0047] Please continue reading. Figure 7 Furthermore, one end of the light guide 1 is the light input end. Along the length of the light guide 1, the light input end has a light input segment 15 and a light guide splicing segment 16. One end of the light guide splicing segment 16 is connected to the light input segment 15, and the other end is connected to the light output segment 17. The groove 11 is located in the light output segment 17. In other embodiments, such as... Figure 10 As shown, the two ends of the light guide 1 are the light input ends. In this invention, one or both ends of the light guide are used as the light input ends. The light input ends are used to collect the light from the light source. After the light emitted by the light source enters the light guide, it undergoes total internal reflection and propagates to the position with the light guide teeth. The light guide teeth will reflect the total internally reflected light out and illuminate the lens, thereby achieving the effect of light emission on the lens side.

[0048] Please continue reading. Figures 4 to 9This utility model also provides a double-sided light guide structure, including a bracket 2, a lens 3, a light source 4, and the aforementioned light guide 1. The bracket 2 includes a first bracket 21 and a second bracket 22 arranged parallel to and opposite to the first bracket 21. The lens 3 includes a first lens 31 and a second lens 32 arranged parallel to and opposite to the first lens 31. The first bracket 21, the second bracket 22, the first lens 31, and the second lens 23 are sequentially connected to form a receiving cavity 5 with openings at both ends. The light guide 1 is located in the receiving cavity 5, and the length direction of the receiving cavity 5 is consistent with the length direction of the light guide 1. One or both ends of the light guide 1 extend out of the receiving cavity 5 from the openings. Both the first support 21 and the second support 22 are elongated flat plates. The inner sides of both the first support 21 and the second support 22 have protrusions 23 that match the shape of the grooves. The first support 21 is located on one side of the first groove 111 and corresponds to it, with its protrusion 23 accommodated within the first groove 111. The second support 22 is located on one side of the second groove 112 and corresponds to it, with its protrusion 23 accommodated within the second groove 112. Preferably, the protrusion 23 is a V-shaped protrusion that matches the shape of the groove. When the protrusion 23 is located within the corresponding groove, it can prevent the light emitted from the first light-emitting surface 121 and the light emitted from the second light-emitting surface 122 from interfering with each other. In one embodiment, when the protrusion 23 is located within the groove 11, there is a gap between the protrusion 23 and the groove 11 to prevent the light guide from colliding with the support during assembly. A recessed structure is provided at the light-inlet end of the light guide near the groove 11. When the light guide 1 is accommodated in the receiving cavity 5, one or both ends of the bracket 2 abut against the recessed structure at the light-inlet end of the light guide, thereby providing support and fixation for the light guide.

[0049] like Figure 4 and Figure 9 As shown, the lens 3 is located on the side of the curved surface and corresponds one-to-one with the curved surface 12. That is, the first lens 31 is opposite to the first light-emitting surface 121, and the second lens 32 is opposite to the second light-emitting surface 122. Light emitted from the first light-emitting surface 121 illuminates the corresponding first lens 31, and light emitted from the second light-emitting surface 122 illuminates the corresponding second lens 32. It should be noted that the number of protrusions corresponds one-to-one with the number of grooves, and the number of lenses corresponds one-to-one with the number of light-emitting surfaces, thereby enabling an LED to illuminate at least both sides of the light guide through a single light guide.

[0050] Please continue reading. Figure 4 and Figure 5 In this embodiment, the light source 4 is disposed at one end of the light guide 1, and the light source 4 is a single LED light source. Light enters the light source 4 from one end of the light guide 1. In other embodiments, the light source is disposed at both ends of the light guide, and light enters the light source from both ends of the light guide.

[0051] Please continue reading. Figure 9 ,in, Figure 9 The dashed line in the middle represents the path of part of the light rays reflected by the optical guide teeth, such as... Figure 9 As shown, the light emitted by the light source 4 enters the light guide 1 through the light-incident section 15 at one or both ends of the light guide 1 and is propagated to the light guide teeth 14 on each tooth surface 13 via the light guide splicing section 16. The first light guide tooth 141 and the third light guide tooth 143 opposite to the first light guide tooth 141 reflect the light to the first light-emitting surface 121 and illuminate the first lens 31 via the first light-emitting surface 121. The second light guide tooth 142 and the fourth light guide tooth 144 opposite to the second light guide tooth 142 reflect the light to the second light-emitting surface 122 and illuminate the second lens 32 via the second light-emitting surface 122, thereby achieving the effect that both the first lens 31 and the second lens 32 are lit.

[0052] The multi-sided light-emitting light guide structure of this utility model illuminates at least two positions with one light guide, achieving the effect of lighting up two or more positions. Moreover, it only requires one LED, reducing the number of LEDs and light guides, which helps to reduce costs.

[0053] The multi-sided light-emitting light guide structure of this utility model uses one LED to illuminate at least two positions, avoiding the difference in illumination effect on both sides due to different LEDs, which is beneficial to improving the product's illumination optical effect.

[0054] The multi-sided light-emitting light guide structure of this utility model reduces the number of parts, which is beneficial for the installation and fixation of parts. At the same time, the shape of the light guide changes from a circle to a double ellipse, which is beneficial for the stability of product installation.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-sided light-emitting light guide, characterized in that, Along the axial direction of the light guide (1), at least two rows of grooves (11) are formed on the side surface of the light guide, and the light guide surface between each pair of grooves (11) is an arc surface (12). Each row of grooves has two opposing tooth surfaces (13), and multiple optical guide teeth (14) are distributed on each tooth surface, wherein the optical guide teeth on each tooth surface face the arc surface adjacent to that tooth surface. Light enters the light guide from one or both ends, is reflected by the light guide teeth, and then exits from the arc surface corresponding to the light guide teeth.

2. The multi-sided light-emitting optical guide according to claim 1, characterized in that, The grooves (11) are evenly spaced apart, the length of each groove (11) is less than or equal to the length of the light guide, the opening width of each groove (11) is less than the width of the arc surface (12), and / or At least two rows of grooves (11) are formed on the side of the light guide, and the light guide emits light from both sides.

3. The multi-sided light-emitting optical guide according to claim 1, characterized in that, The light guide surface between the two grooves (11) is an elliptical arc surface. Each tooth surface (13) has a smooth transition to the adjacent arc surface.

4. The multi-sided light-emitting optical guide according to claim 1, characterized in that, The groove (11) is a V-shaped groove, and the two opposite surfaces of the V-shaped groove are tooth surfaces (13). The number of optical guide teeth on each tooth surface is the same, and the length of the multiple optical guide teeth arranged on each tooth surface is less than or equal to the length of the groove.

5. The multi-sided light-emitting optical guide according to claim 1, characterized in that, The optical guide tooth (14) is prismatic, rectangular and / or spherical, and the optical guide tooth (14) has a concave structure and / or a convex structure.

6. The multi-sided light-emitting optical guide according to claim 1, characterized in that, One or both ends of the light guide (1) are light-incident ends. Along the length of the light guide (1), the light-incident end has a light-incident section (15) and a light guide splicing section (16). One end of the light guide splicing section (16) is connected to the light-incident section (15), and the other end is connected to the light-out section (17). The groove (11) is located in the light-out section (17).

7. A multi-sided light-emitting optical guide structure, characterized in that, Includes a bracket (2), a lens (3), a light source (4), and a light guide (1) as described in any one of claims 1-6. The bracket (2) and lens (3) form a receiving cavity (5) with openings at both ends. The light guide (1) is located in the receiving cavity (5), and one or both ends of the light guide (1) extend out of the receiving cavity (5) from the openings. The bracket (2) is located on the side of the groove (11), and the lens (3) is located on the side of the arc surface (12). Light emitted from the arc surface illuminates the corresponding lens. The light source (4) is disposed at one or both ends of the light guide (1).

8. The multi-sided light-emitting optical guide structure according to claim 7, characterized in that, The bracket (2) is flat and has a protrusion (23) that matches the shape of the groove on the side of the bracket (2) facing the groove along the length direction of the bracket (2).

9. The multi-sided light-emitting optical guide structure according to claim 8, characterized in that, The protrusion (23) is located within the groove (11), and there is a gap between the protrusion (23) and the groove (11).

10. The multi-sided light-emitting optical guide structure according to claim 7, characterized in that, The light source (4) is a single LED light source.

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