CN113324229A - Light guide element and lighting decoration device thereof - Google Patents
Light guide element and lighting decoration device thereof Download PDFInfo
- Publication number
- CN113324229A CN113324229A CN202110688968.8A CN202110688968A CN113324229A CN 113324229 A CN113324229 A CN 113324229A CN 202110688968 A CN202110688968 A CN 202110688968A CN 113324229 A CN113324229 A CN 113324229A
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- China
- Prior art keywords
- light
- guide element
- light guide
- arc
- shaped reflecting
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2106/00—Interior vehicle lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a light guide element and an illumination decoration device thereof. The surface of the light guide element comprises a light incident surface, a light emergent surface and an arc-shaped reflecting surface, wherein the light incident surface and the light emergent surface are respectively adjacent to two ends of the arc-shaped reflecting surface; the light guide element is also provided with a light-blocking reflection structure which can prevent the light rays entering the light inlet surface from directly entering the light outlet surface and can reflect the light rays entering the light-blocking reflection structure inside the light guide element; the light rays entering the light inlet surface can reach the light outlet surface after being reflected at least once by the arc-shaped reflecting surface. The illumination decoration device can ensure that the brightness and the color uniformity of all positions in the length direction of the light-emitting surface are good, and the required structural space is small and easy to process.
Description
Technical Field
The present invention relates to illuminated trim apparatus, and more particularly to apparatus for illuminating and trimming the interior of a vehicle.
Background
A vehicle lighting decoration device, such as an atmosphere lamp, an interior lamp, etc., may be used for combination of contour lighting and ambient lighting in the interior of a motor vehicle, and fig. 1 schematically illustrates a structure of a conventional lighting decoration device, as shown in fig. 1, which includes a light source 91 for emitting light, a strip-shaped light guide element 92, and a covering element (not shown in the figure), where the light guide element 92 has a first plane and a second plane, where the first plane is a light incident plane, and the second plane is a light emergent plane.
In the prior art, in order to meet the requirements of uniformity and multi-color mixed light, a light guide element 92 with a circular or square cross section is usually selected, and a light source 91 is arranged at one end of the light guide element, and light emitted by the light source 91 is reflected to a light emitting surface through a microstructure at the bottom of the light guide element 92, wherein the microstructure can be tooth-shaped or point-shaped. For better effect, light sources 91 may be disposed at both ends of the light guide member 92.
In the existing vehicle lighting decoration device, the light sources at both ends usually adopt RGB Light Emitting Diodes (LEDs), and are matched with communication and software application, so that simple animations such as breathing, gradual change, multi-color scrolling and the like can be presented, but the requirements of customers on intelligent atmosphere cannot be met, because the existing vehicle lighting decoration device has single function and few options.
In the prior art, there are also light guide elements that use the reflection of a reflective cavity as interior illumination. In many application scenarios, an external display panel is required to be arranged outside the interior lamp, so as to separate the interior lamp from the external. However, the method has the defects of more parts, complex processing procedure and high cost, and the specific principle is as follows: if the external display panel and the interior trim component are integrally formed, the color of the external display panel area (usually colorless or light color) is usually not consistent with the color of the rest areas of the interior trim, so that the problems of complicated process (namely, mask or post-processing is needed) and cost increase caused by the interior trim painting process exist; if the external display panel and the interior trim element are separately formed, the number of parts increases, and an additional mounting structure is required to fix the two, which also means that the structure is complicated, the number of production processes increases, and the cost increases.
Disclosure of Invention
The present invention provides a light guide element and a lighting decoration device thereof, which can ensure good uniformity of brightness and color at each position along the length direction of a light-emitting surface, and have small required structural space and easy processing.
The embodiment of the invention also provides a light guide element, wherein the surface of the light guide element comprises a light incident surface and a light emergent surface; the light guide element is characterized in that the light guide element is provided with a light-blocking reflection structure which can prevent light rays entering the light inlet surface from directly entering the light outlet surface and can reflect light rays entering the light-blocking reflection structure inside the light guide element; the surface of the light guide element also comprises arc-shaped reflecting surfaces, and the light incident surface and the light emergent surface are respectively adjacent to two ends of the arc-shaped reflecting surfaces; the light rays entering the light inlet surface can reach the light outlet surface after being reflected at least once by the arc-shaped reflecting surface.
The embodiment of the invention provides an illumination decoration device, which comprises a light source and the light guide element; the extending direction of the light incident surface of the light guide element is consistent with the axial direction of the light guide element; the light source comprises a plurality of light emitting units, the light emitting units are opposite to the light incident surface, and the light emitting units are arranged in at least one row along the direction consistent with the axial direction of the light guide element.
The invention has at least the following technical effects:
1. the light guide element provided by the embodiment of the invention is provided with the arc-shaped reflecting surface, the light incoming surface and the light outgoing surface are respectively adjacent to two ends of the arc-shaped reflecting surface, and the light isolating reflecting structure is arranged on a linear path of the light incoming surface and the light outgoing surface;
2. the light sources of the lighting decoration device are arranged along the axial direction of the light guide element, so that the multifunctional animation effect, the man-machine intelligent interaction and other application scenes of the atmosphere decoration device in the vehicle can be realized, and meanwhile, the lighting decoration device can be used as an intelligent multi-animation lighting or decoration device in the vehicle due to the fact that the number of the light emitting diodes is large and the light emitting intensity and uniformity are good;
3. the light guide element provided by the embodiment of the invention is simple to process, and the size of the light guide element can be conveniently and flexibly adjusted according to the length of the optical path.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a schematic view of a conventional illuminated decoration apparatus.
Fig. 2 shows a perspective view of a first embodiment of the illuminated decoration apparatus according to the present invention.
Fig. 3 shows a schematic front view of an illuminated decorative arrangement according to a first embodiment of the invention.
FIG. 4 shows a schematic side view of an illuminated decorative apparatus according to a first embodiment of the present invention.
Fig. 5 to 10 show schematic side views of illuminated decorative devices according to second to seventh embodiments of the present invention, respectively.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Please refer to fig. 2 to 4. The illuminated decorative device according to the first embodiment of the present invention includes a light source 1 and a light guiding element 2.
The light source 1 comprises at least one light emitting unit 11. In the present embodiment, the light source 1 includes a plurality of light emitting units 11, and the light emitting units 11 are LEDs (light emitting diodes). The LEDs 11 are disposed on a circuit board 12, which circuit board 12 may be a rigid or flexible circuit board. In the case of a light source 1 with a plurality of LEDs 11, the LEDs may emit monochromatic or polychromatic light, and the light source 1 is a color-variable light-emitting module. The plurality of LEDs 11 may produce mixed light, such as mixed white light.
The surface of the light guide element 2 includes a light incident surface 2a, a light emitting surface 2b and a circular arc-shaped reflecting surface 2c, and the light incident surface 2a and the light emitting surface 2b are respectively adjacent to two ends of the circular arc-shaped reflecting surface 2 c. In the present embodiment, the light incident surface 2a is directly connected to one end of the arc-shaped reflecting surface 2c, and the light emitting surface 2b is connected to the other end of the arc-shaped reflecting surface 2c through the transition surface 2 d. In order to achieve better optical effect, a dermatoglyph or a fine optical pattern may be added to the light incident surface 2a or the light emitting surface 2 b.
Alternatively, the arc of the circular arc-shaped reflecting surface 2c is greater than 180 °, and preferably, the arc of the circular arc-shaped reflecting surface 2c is greater than or equal to 200 °. By selecting the arc surface angle, the light incoming direction and the light outgoing direction can be staggered, namely, the light incoming direction and the light outgoing direction can be respectively arranged on the left side (or the right side) and the upper side (or the lower side) of the light guide element, so that the structure can be more compact. And by arranging a large-area circular arc-shaped reflecting surface, a sufficient reflecting optical path can be provided so as to fully diffuse and mix light.
The light guide element 2 is further provided with a light-blocking reflection structure, and the light-blocking reflection structure can prevent the light rays entering the light incident surface 2a from directly entering the light emergent surface 2b and can reflect the light rays entering the light guide element to the light-blocking reflection structure. In this embodiment, the light blocking reflection structure is an L-shaped groove 21 recessed from the surface of the light guide element 2 to the inside of the light guide element, and two sides of the notch of the L-shaped groove 21 are respectively connected to the light incident surface 2a and the light emitting surface 2 b. The step surface formed by the L-shaped groove 21 can block and reflect the light directly emitted from the light source to the light emitting surface 2 b.
The light incident on the light incident surface 2a reaches the light emitting surface 2b after being reflected by the arc-shaped reflecting surface 2c at least once. Fig. 4 shows the propagation paths of four light beams emitted from the light source 1, and it can be seen from fig. 4 that some light beams reach the light emitting surface 2b after the first reflection of the circular arc reflecting surface 2c and the first reflection of the light blocking reflecting structure, and some light beams reach the light emitting surface 2b after the second reflection of the circular arc reflecting surface 2c and the first reflection of the light blocking reflecting structure. In the case not shown in fig. 4, some of the light rays incident on the light incident surface 2a reach the light emitting surface 2b after being reflected by the circular arc-shaped reflecting surface 2 c.
In the present embodiment, the arc-shaped reflecting surface 2c is a smooth surface (i.e., a standard arc surface). The perpendicular distance between the center of the circular arc-shaped reflecting surface 2c and the light incident surface 2a is 0.7-1.2 times, preferably 0.8-0.99 times (i.e. smaller than the radius of the circular arc-shaped reflecting surface 2 c) of the radius of the circular arc-shaped reflecting surface 2c, so that the light incident surface 2a does not need to be arranged far away from the circular arc-shaped reflecting surface 2c and the light emergent surface 2b, the space required by installation is reduced, the structure is more compact, and the light of the light source cannot directly enter the light emergent surface 2 b. Optionally, the perpendicular distance between the center of the circular arc-shaped reflecting surface 2c and the light emitting surface 2b is 1-2 times, preferably 1-1.5 times, the radius of the circular arc-shaped reflecting surface 2 c.
Further, the light incident surface 2a is perpendicular to the light emitting surface 2 b. At the light incident surface, the central axis of each light emitting unit 11 is on the same straight line with the center of the circular arc-shaped reflecting surface 2c, and the center line of the light emitting surface 2b passes through the center of the circular arc-shaped reflecting surface 2 c. The structure can enable the light inlet surface and the light outlet surface to be close to each other in distance, and most of light emitted from the light source can be emitted into the light outlet surface after being reflected for multiple times, so that sufficient and uniform light mixing is ensured in a limited space.
In this embodiment, the light emitting units 11 face the light incident surface, and the light emitting units are arranged in a row along a direction consistent with the axial direction of the light guide element, so that a plurality of application scenes such as a multifunctional animation effect and man-machine intelligent interaction of the atmosphere decoration device in the vehicle can be realized.
The light guide element 2 may be a member molded from a high molecular polymer or a member molded from optical glass. The shape of the light guide element 2 is not limited to a linear shape, and may be other shapes depending on the space and the effect. The cross section of the light guide element 2 can also adopt a non-single shape, and a multi-shape combination type can be selected according to requirements.
Optionally, to improve the brightness, the surface of the light guiding element 2 is provided with a reflective layer in other regions (including the arc-shaped reflective surface 2 c) except the light incident surface 2a and the light emergent surface 2b, so as to increase the light reflectivity. The reflective layer may be obtained by surface treatment, such as metallisation, spraying of a reflective paint, etc.
In order to increase the light reflectivity and achieve light controllability, the circular-arc reflecting surface 2c may be a surface having a microstructure. In the second embodiment, as shown in fig. 5, the circular arc-shaped reflecting surface 2c is composed of a plurality of micro-planes 21c connected in sequence, but the whole trend is still circular arc-shaped, and the angles of the micro-planes can be adjusted in the design process to control the trend of light rays in the length and height directions of the light guide element. In the third embodiment, as shown in fig. 6, the circular arc-shaped reflecting surface 2c is composed of a plurality of small circular arc surfaces 22c connected in sequence, and the above-mentioned optical effect can be achieved as well.
In the second and third embodiments, the apexes of the outer contour of the section of the circular-arc reflecting surface with the microstructures are located on the same circle C0, and fig. 6 shows a circle C0. Similar to the first embodiment, the perpendicular distance between the center of the circle C0 and the light incident surface 2a is 0.7-1.2 times, preferably 0.8-0.99 times the radius of the circle C0. The perpendicular distance between the center of the circle C0 and the light-emitting surface 2b is 1-2 times, preferably 1-1.5 times, the radius of the circle C0. The light incident surface 2a is perpendicular to the light emitting surface 2 b. At the light incident surface, the central axis of each light emitting unit 11 is aligned with the center of the circle C0, and the central line of the light emitting surface 2b passes through the center of the circle C0.
In the fourth embodiment, as shown in fig. 7, the light-blocking reflective structure is a light-blocking portion 3 disposed inside the light guide element 2, and the light-blocking portion 3 is an interlayer made of metal or other materials and is integrally formed with the light guide element 2 through an insert molding process.
Fig. 8 and 9 show a covering element 4 comprised by the illuminated ornamental device, in a fifth embodiment shown in fig. 8 the light guiding element 2 and the covering element 4 are two parts separate from each other, and in a sixth embodiment shown in fig. 9 the light guiding element 2 and the covering element 4 are integrally formed. In order to efficiently utilize light and avoid waste, the holder (not shown) of the light guide element 2 or the cover element 4 may be optically designed. The binding surface of the support or the covering element and the light guide element is subjected to high reflection treatment, such as metal layer plating and reflective paint spraying, or high-reflectivity materials are selected, or high reflection treatment is carried out after a plurality of fine optical reflection structures are made. The use of the holder or cover element 4 not only enhances the fixation of the light-guiding element 2 but also enhances the use of light.
In the seventh embodiment, as shown in fig. 10, two ends of the circular arc-shaped reflecting surface 2c are directly connected to the light incident surface 2a and the light emitting surface 2b, respectively.
The illumination decoration device of the embodiment of the invention can be an illumination decoration device on a lower instrument panel of a windshield in an automobile, and also can be an illumination decoration device on a door panel and a floor in the automobile.
The light guide element provided by the embodiment of the invention has the advantages that the arc-shaped reflecting surface is arranged, the light incident surface and the light emergent surface are respectively arranged close to the two ends of the arc-shaped reflecting surface, so that the required structural space is small, and the light of a light source is prevented from directly irradiating the light emergent surface by arranging the light isolating reflecting structure. The structure can ensure that enough optical path is provided so as to realize uniform light mixing, so that the embodiment of the invention is more suitable for being applied to certain scenes with strict space requirements, can ensure that the light guide element has no light spot, and simultaneously realizes the multi-color light mixing of the RGB light-emitting diodes in the light guide element.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (13)
1. A light guide element is provided, wherein the surface of the light guide element comprises a light incident surface and a light emergent surface; the light guide element is characterized by comprising a light-blocking reflection structure, wherein the light-blocking reflection structure can prevent light rays entering the light incident surface from directly entering the light emergent surface and can reflect light rays entering the light-blocking reflection structure from the inside of the light guide element;
the surface of the light guide element also comprises arc-shaped reflecting surfaces, and the light incident surface and the light emergent surface are respectively adjacent to two ends of the arc-shaped reflecting surfaces;
the light rays entering the light inlet surface can reach the light outlet surface after being reflected by the arc-shaped reflecting surface for at least one time.
2. The light guide element of claim 1, wherein the light incident surface is perpendicular to the light emergent surface.
3. A light guide element according to claim 1 or 2, wherein two ends of the arc-shaped reflecting surface are directly connected to the light incident surface and the light emitting surface, respectively.
4. The light guide element according to claim 1 or 2, wherein the light blocking reflection structure is an L-shaped groove recessed from the surface of the light guide element to the inside of the light guide element, and two sides of a notch of the L-shaped groove are respectively connected to the light incident surface and the light emitting surface;
alternatively, the light blocking reflection structure is a light blocking portion disposed inside the light guide element.
5. A light-directing element as claimed in claim 1 or claim 2 wherein the arc of the circular-arc reflective surface is greater than 180 °.
6. A light-guiding element as claimed in claim 1 or 2, characterized in that the circular-arc-shaped reflecting surface is a smooth surface or a surface with a microstructure.
7. A light-guiding element as claimed in claim 6, characterized in that the apexes of the cross-sectional outer contours of the microstructured circular-arc reflecting surfaces lie on the same circumference.
8. The light guide element according to claim 7, wherein when the circular arc-shaped reflecting surface is a smooth surface, a perpendicular distance between a center of the circular arc-shaped reflecting surface and the light incident surface is 0.7 to 1.2 times a radius of the circular arc-shaped reflecting surface;
when the arc-shaped reflecting surface is a surface with a microstructure, the vertical distance between the circle center of the circumference and the light incident surface is 0.7-1.2 times of the radius of the circumference.
9. The light guide element according to claim 7, wherein when the circular arc-shaped reflecting surface is a smooth surface, the vertical distance between the center of the circular arc-shaped reflecting surface and the light emitting surface is 1-2 times the radius of the circular arc-shaped reflecting surface;
when the arc-shaped reflecting surface is a surface with a microstructure, the vertical distance between the circle center of the circumference and the light-emitting surface is 1-2 times of the radius of the circumference.
10. The light guide element according to claim 7, wherein when the circular arc-shaped reflecting surface is a smooth surface, a center line of the light emitting surface passes through a center of the circular arc-shaped reflecting surface;
when the arc-shaped reflecting surface is a surface with a microstructure, the center line of the light-emitting surface passes through the circle center of the circumference.
11. A light guide element according to claim 1, wherein the surface of the light guide element is provided with a reflective layer in the regions other than the light incident surface and the light exiting surface to increase the light reflectivity.
12. A light guide element according to claim 1, wherein the extending direction of the light incident surface is the same as the axial direction of the light guide element.
13. An illuminated ornamental device comprising a light source and a light-guiding element according to any one of claims 1 to 11;
the extending direction of the light incident surface of the light guide element is consistent with the axial direction of the light guide element;
the light source comprises a plurality of light emitting units, the light emitting units are opposite to the light incident surface, and the light emitting units are arranged in a row along the direction consistent with the axial direction of the light guide element.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110688968.8A CN113324229A (en) | 2021-06-22 | 2021-06-22 | Light guide element and lighting decoration device thereof |
| PCT/CN2022/099317 WO2022267980A1 (en) | 2021-06-22 | 2022-06-17 | Light guide element and lighting decoration device having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110688968.8A CN113324229A (en) | 2021-06-22 | 2021-06-22 | Light guide element and lighting decoration device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113324229A true CN113324229A (en) | 2021-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110688968.8A Pending CN113324229A (en) | 2021-06-22 | 2021-06-22 | Light guide element and lighting decoration device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113324229A (en) |
| WO (1) | WO2022267980A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267980A1 (en) * | 2021-06-22 | 2022-12-29 | 科博达技术股份有限公司 | Light guide element and lighting decoration device having same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007073330A (en) * | 2005-09-07 | 2007-03-22 | Nix Inc | Light guide device for linear illumination |
| JP5734204B2 (en) * | 2009-01-09 | 2015-06-17 | コーニンクレッカ フィリップス エヌ ヴェ | Optical element and light source having the optical element |
| JP5229023B2 (en) * | 2009-03-12 | 2013-07-03 | スタンレー電気株式会社 | Vehicle lighting |
| CN104613417A (en) * | 2015-02-05 | 2015-05-13 | 成都市宏山科技有限公司 | Light transferring pole with low light transmission loss |
| JP2017212037A (en) * | 2016-05-23 | 2017-11-30 | スタンレー電気株式会社 | Vehicular headlight |
| CN214790920U (en) * | 2021-06-22 | 2021-11-19 | 科博达技术股份有限公司 | Light guide element and lighting decoration device thereof |
| CN113324229A (en) * | 2021-06-22 | 2021-08-31 | 科博达技术股份有限公司 | Light guide element and lighting decoration device thereof |
-
2021
- 2021-06-22 CN CN202110688968.8A patent/CN113324229A/en active Pending
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2022
- 2022-06-17 WO PCT/CN2022/099317 patent/WO2022267980A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022267980A1 (en) * | 2021-06-22 | 2022-12-29 | 科博达技术股份有限公司 | Light guide element and lighting decoration device having same |
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| Publication number | Publication date |
|---|---|
| WO2022267980A1 (en) | 2022-12-29 |
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