Light guide plate, light guide structure and lighting device

Abstract

The utility model discloses a light guide plate, a light guide structure and a lighting device, and the light guide plate comprises a first surface and a second surface which are opposite to each other and are spaced by a certain preset thickness, and a first side surface and a second side surface which are arranged at two sides of the first surface and the second surface. The light guide plate comprises a first light guide plate, a second light guide plate and a light blocking plate connected with the first light guide plate and the second light guide plate, the first light guide plate and the second light guide plate are connected to the two opposite ends of the light blocking plate in the longitudinal direction respectively, and a first light blocking groove is concavely formed in the connecting position of the first light guide plate and the light blocking plate along the second side face. A second light blocking groove is concavely formed in the joint of the second light guide plate and the light blocking plate along the first side face. According to the light guide plate, the light guide structure and the lighting device, the light blocking plate is used for preventing optical crosstalk between the first light guide plate and the second light guide plate.

Description

Technical Field

[0001] The utility model relates to the field of lighting, in particular to a light guide plate, a light guide structure and a lighting device. Background Art

[0002] Currently, the light-emitting parts of 3C products on the market mostly use light guide plates as light guiding media. The main function of the light guide plate is to convert the introduced point light source or line light source into a surface light source and output it from a predetermined light-emitting surface. However, in actual use, some light will still leak out from the side of the light guide plate (that is, not the predetermined light-emitting surface), affecting the intensity and efficiency of the light output.

[0003] Furthermore, in order to achieve multiple colors of light and increase the beauty, the existing light guide plate is usually equipped with multiple point light sources or line light sources. The complex light sources often lead to the phenomenon of cross-lighting, and the light output from the light output surface will be color-biased or contain stray light, which seriously affects the light output effect. Utility Model Content

[0004] The utility model aims to provide a light guide plate, a light guide structure and a lighting device for preventing light crosstalk.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A light guide plate comprises a first surface and a second surface that are opposite to each other and separated by a preset thickness, and a first side surface and a second side surface arranged on both sides of the first surface and the second surface. The light guide plate comprises a first light guide plate and a second light guide plate, and a light blocking plate connecting the first light guide plate and the second light guide plate, the first light guide plate and the second light guide plate are respectively connected to opposite ends of the light blocking plate along the longitudinal direction, a first light blocking groove is recessed along the second side surface at the connection between the first light guide plate and the light blocking plate, and a second light blocking groove is recessed along the first side surface at the connection between the second light guide plate and the light blocking plate.

[0007] Furthermore, the first light-blocking groove has a first depth, the second light-blocking groove has a second depth, and a lateral overlapping depth of the first depth and the second depth is greater than a distance between the light-blocking plate and the first side surface and the second side surface.

[0008] Furthermore, the light blocking plate is in a U-shape, and a third light blocking groove is provided in the center of the light blocking plate.

[0009] Furthermore, the first light guide plate is provided with a light guide strip protruding from the first surface along a longitudinal direction, and the first light guide plate is provided with a light groove recessed on the first side surface or the second side surface.

[0010] Furthermore, the first light guide plate is provided with a fourth light blocking groove on a side of the light guide bar away from the lamp groove, and in a longitudinal extension direction, a length of the fourth light blocking groove is greater than or equal to a length of the light guide bar.

[0011] Furthermore, the second light guide plate includes at least two light guide parts, each of the light guide parts includes at least two connecting parts, and two adjacent connecting parts of two adjacent light guide parts are surrounded by a light blocking groove.

[0012] Furthermore, two adjacent light guide parts are arranged in a loop through the connecting part.

[0013] Furthermore, at least one of the connecting portions connected to the light guiding portion among the adjacent light guiding portions is arranged perpendicular to the recessed direction of the light blocking groove.

[0014] A light guide structure comprises the above-mentioned light guide plate, wherein the light guide structure comprises a cover plate, the cover plate is recessed with an installation groove, the light guide plate is installed in the installation groove, the second light guide plate is provided with a positioning hole, the cover plate is protruded with a positioning column corresponding to the positioning hole, and the positioning column is installed in the positioning hole.

[0015] A lighting device comprises a base, a bracket and a lamp holder, wherein the lamp holder and the base are respectively arranged at the upper and lower ends of the bracket, and the bracket is mounted with the above-mentioned light guide structure.

[0016] The light guide plate, light guide structure and lighting device of the utility model use a light blocking plate to prevent the first light guide plate and the second light guide plate from having a light crosstalk phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the lighting device of the present utility model.

[0018] Figure 2 It is a schematic diagram of the light guide plate of the utility model.

[0019] Figure 3 for Figure 2 A cross-sectional view of the light guide plate shown.

[0020] Figure 4 It is a schematic diagram of the light guide structure of the utility model.

[0021] Figure 5 for Figure 4 An exploded view of the light guide structure shown.

[0022] Figure 6 for Figure 5 A local enlarged view of point A of the light-guiding structure shown.

[0023] Figure 7 for Figure 4 A three-dimensional exploded view of the light guide structure shown. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] See also Figure 2 and Figure 3 The utility model discloses a light guide plate 42, comprising a first surface 4201 and a second surface 4202 which are opposite to each other and separated by a preset thickness, and a first side surface 4203 and a second side surface 4204 which are arranged on both sides of the first surface 4201 and the second surface 4202. The light guide plate 42 comprises a first light guide plate 421 and a second light guide plate 422, and a light blocking plate 423 which connects the first light guide plate 421 and the second light guide plate 422. The first light guide plate 421 and the second light guide plate 422 are respectively connected to opposite ends of the light blocking plate 423 along the longitudinal direction. A first light blocking groove 424 is recessed along the second side surface 4204 at the connection between the first light guide plate 421 and the light blocking plate 423. A second light blocking groove 425 is recessed along the first side surface 4203 at the connection between the second light guide plate 422 and the light blocking plate 423.

[0026] The function of the first light-blocking groove 424 is to reflect and / or refract the light output from the first light guide plate 421 in the first light-blocking groove 424 and not be introduced into the light-blocking plate 423, or the light output from the light-blocking plate 423 is reflected and / or refracted in the first light-blocking groove 424 and not be introduced into the first light guide plate 421, thereby ensuring that no cross-talk occurs between the first light guide plate 421 and the light-blocking plate 423.

[0027] The function of the second light-blocking groove 425 is to reflect and / or refract the light output from the second light guide plate 422 in the second light-blocking groove 425 and not be introduced into the light-blocking plate 423, or to reflect and / or refract the light output from the light-blocking plate 423 in the second light-blocking groove 425 and not be introduced into the second light guide plate 422, thereby ensuring that no cross-talk occurs between the second light guide plate 422 and the light-blocking plate 423.

[0028] In summary, by setting the first light-blocking groove 424 and the second light-blocking groove 425, the light derived from the first light guide plate 421 and the light derived from the second light guide plate 422 are reflected and / or refracted in the first light-blocking groove 424 and the second light-blocking groove 425 respectively. Therefore, the light derived from the first light guide plate 421 will not be introduced into the second light guide plate 422, and the light derived from the second light guide plate 422 will not be introduced into the first light guide plate 421, so as to ensure that the first light guide plate 421 and the second light guide plate 422 will not have a cross-talk phenomenon.

[0029] In more detail, the first light blocking groove 424 has a first depth along the concave direction, and the second light blocking groove 425 has a second depth along the concave reverse direction. The lateral overlapping depth of the first depth and the second depth is greater than the distance between the light blocking plate 423 and the first side surface 4203 and the second side surface 4204.

[0030] By lateral superposition of the first depth of the first light blocking groove 424 and the second depth of the second light blocking groove 425, the light guiding paths of the first light guide plate 421 and the second light guide plate 422 are completely blocked in the lateral direction, so as to achieve zero light introduction amount between the first light guide plate 421 and the second light guide plate 422.

[0031] In this embodiment, the light blocking plate 423 is rectangular, and the lateral overlapping depth of the first depth and the second depth is greater than the width of the light blocking plate 423 between the first side surface 4203 and the second side surface 4204 .

[0032] In more detail, the light blocking plate 423 is in a U-shaped shape, and a third light blocking groove 4231 is provided at the center of the light blocking plate 423. The third light blocking groove 4231 is provided in the middle of the transverse overlap of the first depth and the second depth, further blocking the risk of light leakage at the alternating position of the first depth and the second depth, greatly enhancing the light blocking effect.

[0033] Please continue reading Figure 2 and Figure 3, the first light guide plate 421 is provided with a light guide bar 4211 protrudingly on the first surface 4201 along the longitudinal direction. The first light guide plate 421 is provided with a lamp groove 4212 recessed on the first side surface 4203 or the second side surface 4204. The first light guide plate 421 is provided with a fourth light blocking groove 4213 on the side of the light guide bar 4211 away from the lamp groove 4212, and the length of the fourth light blocking groove 4213 in the longitudinal extension direction is greater than or equal to the length of the light guide bar 4211. The light guide bar 4211 transmits light from the lamp groove 4212 to the light guide bar 4211. The fourth light blocking groove 4213 blocks the light of the light guide bar 4211 to prevent the light from being transmitted to other areas where light display is not required to occur, thereby further ensuring the light transmission efficiency.

[0034] Please continue reading Figure 2 and Figure 3 The second light guide plate 422 includes at least two light guide portions 4221 , each of the light guide portions 4221 includes at least two connecting portions 4222 , and two adjacent connecting portions 4222 of two adjacent light guide portions 4221 are surrounded by a light blocking groove 4223 .

[0035] More specifically, in this embodiment, two adjacent light guide portions 4221 are arranged in a loop through the connecting portion 4222. At least one of the adjacent light guide portions 4221 and the connecting portion 4222 connected to the light guide portion 4221 is arranged perpendicular to the recessed direction of the light blocking groove 4223.

[0036] See also Figure 4-Figure 7 The utility model also discloses a light guide structure, which includes the above-mentioned light guide plate 42. The light guide structure also includes a cover plate 41. The cover plate 41 is concavely provided with a mounting groove 411. The light guide plate 42 is mounted in the mounting groove 411.

[0037] See also Figure 2 and Figure 5 The second light guide plate 422 is provided with a positioning hole 4224. The cover plate 41 is provided with a positioning post 45 corresponding to the positioning hole 4224. The positioning post 45 is installed in the positioning hole 4224.

[0038] In this embodiment, the positioning hole 4224 is disposed at a position where the second light guide plate 422 is connected to the light blocking plate 423. Light may be reflected and / or refracted in the transmission path of the positioning hole 4224, which also plays a role of light blocking.

[0039] See also Figure 1-Figure 7The utility model also discloses a lighting device, including a base 10, a bracket 20 and a lamp holder 30. The lamp holder 30 and the base 10 are respectively arranged at the upper and lower ends of the bracket 20. The above-mentioned light guide structure is installed on the bracket 20. In this embodiment, the bracket 20 is hingedly connected to the base 10 and the lamp holder 30, and the lighting angle of the lamp holder 30 can be adjusted through the bracket 20.

[0040] The lighting device further includes a first light source 50 and a second light source 60. The first light source 50 is installed in the installation groove 411 of the cover plate 41, and the first light source 50 is correspondingly arranged in the light groove 4212 of the first light guide plate 421. The second light source 60 is installed in the installation groove 411 of the cover plate 41, and the second light source 60 is correspondingly arranged on the light guide portion 4221 of the second light guide plate 422.

[0041] In this embodiment, the first light source 50 includes a plurality of light sources, and the lamp trough 4212 also includes a plurality of light sources. The number of the first light sources 50 and the lamp trough 4212 is equal and they are arranged one by one. The plurality of the first light sources 50 are arranged in a longitudinally spaced arrangement, and are correspondingly arranged in the lamp trough 4212 of the first light guide plate 421. In more detail, in this embodiment, the first light sources 50 include 13 light sources. The lamp trough 4212 of the first light guide plate 421 is also 13, and the 13 first light sources 50 are installed in the installation groove 411 of the cover plate 41, and are arranged one by one in the lamp trough 4212. The 13 first light sources 50 are controlled by a controller to realize full lighting, interval lighting, flashing state, and marquee state. In this embodiment, the first light source 50 serves a decorative purpose.

[0042] In this embodiment, the second light source 60 includes a plurality of light guide parts 4221 of the second light guide plate 422 also includes a plurality of light guide parts 4221. The number of the second light source 60 is equal to that of the light guide parts 4221 and they are arranged one by one. In more detail, in this embodiment, the second light source 60 includes four light guide parts 4221 of the second light guide plate 422. The four second light sources 60 are installed in the installation groove 411 of the cover plate 41 and are arranged one by one on the light guide parts 4221 of the second light guide plate 422. In this embodiment, the second light source 60 is provided with a touch button corresponding to the light source 60. The touch button is used to control the opening or closing of the lamp head 30 and the second light source 60, and to adjust the brightness and display status. The second light source 60 indicates the control status of the touch button. When the touch button is triggered, the corresponding second light source 60 turns on; when the touch button is triggered again or is not triggered, the corresponding second light source 60 turns off or remains off.

[0043] The light guide plate 42 , the light guide structure and the lighting device of the present invention use the light blocking plate 423 to prevent the first light guide plate 421 and the second light guide plate 422 from having a light crosstalk phenomenon.

[0044] In the accompanying drawings, the sizes and relative sizes of layers and regions are exaggerated for clarity. It should be understood that when an element, such as a layer, region, or substrate, is referred to as being "formed on," "disposed on," or "located on" another element, the element may be disposed directly on the other element, or there may be intervening elements. Conversely, when an element is referred to as being "formed directly on" or "disposed directly on" another element, there are no intervening elements.

[0045] In this document, unless otherwise specified or limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0046] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description, and therefore should not be understood as limitations on this application.

[0047] In this document, the ordinal adjectives “first”, “second”, etc. used to describe elements are only used to distinguish elements with similar attributes, and do not mean that the elements described in this way must follow a given order, or time, space, level or other limitations.

[0048] As used herein, unless otherwise specified, “plurality” or “several” means two or more.

[0049] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0050] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A light guide plate, comprising a first surface and a second surface opposite to each other and separated by a preset thickness, and a first side surface and a second side surface arranged on both sides of the first surface and the second surface, characterized in that: The light guide plate includes a first light guide plate, a second light guide plate, and a light blocking plate connecting the first light guide plate and the second light guide plate, the first light guide plate and the second light guide plate are respectively connected to the opposite ends of the light blocking plate in the longitudinal direction, a first light blocking groove is recessed along the second side surface at the connection between the first light guide plate and the light blocking plate, and a second light blocking groove is recessed along the first side surface at the connection between the second light guide plate and the light blocking plate.

2. The light guide plate according to claim 1, wherein: The first light-blocking groove has a first depth, the second light-blocking groove has a second depth, and a lateral overlapping depth of the first depth and the second depth is greater than a distance between the first side surface and the second side surface of the light-blocking plate.

3. The light guide plate according to claim 2, wherein: The light blocking plate is in a U-shape, and a third light blocking groove is arranged at the center of the light blocking plate.

4. The light guide plate according to claim 1, wherein: The first light guide plate has a light guide strip protruding from the first surface along a longitudinal direction, and the first light guide plate has a light groove recessed on the first side surface or the second side surface.

5. The light guide plate according to claim 4, wherein: The first light guide plate is provided with a fourth light blocking groove on a side of the light guide bar away from the lamp groove, and in a longitudinal extension direction, a length of the fourth light blocking groove is greater than or equal to a length of the light guide bar.

6. The light guide plate according to claim 1, wherein: The second light guide plate includes at least two light guide parts, each of the light guide parts includes at least two connecting parts, and two adjacent connecting parts of two adjacent light guide parts are surrounded by a light blocking groove.

7. The light guide plate according to claim 6, wherein: Two adjacent light guide parts are arranged in a loop through the connecting part.

8. The light guide plate according to claim 7, wherein: At least one of the connecting portions connected to the light guiding portion among the adjacent light guiding portions is arranged perpendicular to the recessed direction of the light blocking groove.

9. A light guide structure, characterized in that: It includes the light guide plate as described in any one of claims 1-8, the light guide structure includes a cover plate, the cover plate is recessed with a mounting groove, the light guide plate is installed in the mounting groove, the second light guide plate is provided with a positioning hole, the cover plate is protruded with a positioning column corresponding to the positioning hole, and the positioning column is installed in the positioning hole.

10. A lighting device, characterized in that: It comprises a base, a bracket and a lamp holder, wherein the lamp holder and the base are respectively arranged at the upper and lower ends of the bracket, and the light guide structure as claimed in claim 9 is installed on the bracket.

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