CN111486411A - Light guide structure with extremely short light mixing distance and car lamp - Google Patents
Light guide structure with extremely short light mixing distance and car lamp Download PDFInfo
- Publication number
- CN111486411A CN111486411A CN202010404220.6A CN202010404220A CN111486411A CN 111486411 A CN111486411 A CN 111486411A CN 202010404220 A CN202010404220 A CN 202010404220A CN 111486411 A CN111486411 A CN 111486411A
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- Prior art keywords
- light
- light guide
- mixing
- mixing distance
- extremely short
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
- F21S43/33—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors characterised by their material, surface treatment or coatings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to the technical field of light guide structures and vehicle lamps, and discloses a light guide structure with an extremely short light mixing distance. The device is through setting up the portion of mixing light at the income light end of strip light guide part, and mix the light portion and make by light diffusion material PMMA, and inside is realized the effect of even mixed light after going on reflecting many times to the light that the light source was emitted by even diffuse reflection of light granule. Therefore, the light can be uniformly mixed in a short distance through multiple reflections, and the light entering the light guide part from the light mixing part is uniformly mixed light which can be directly projected. Because the thickness of the light mixing part made of the light diffusion PMMA material is about 2mm generally, the light mixing distance is greatly reduced compared with the light mixing distance of the traditional light guide structure, and the light mixing distance of the light guide structure of the car light can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of light guide structures and vehicle lamps, in particular to a light guide structure with an extremely short light mixing distance and a vehicle lamp.
Background
With the development of science and technology and the improvement of living standards, passenger vehicles have gradually become the main transportation tools for people to go out, and in the field of design and manufacture of vehicle lamps, L ED light sources have the advantages of fast response, low energy consumption, stable chromaticity and the like, and gradually become the main light sources adopted by the vehicle lamps, and the pursuit and the target of the design and the manufacture of vehicle lamp structures are achieved due to higher light efficiency and smaller structural space occupation.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a light guide structure with an extremely short light mixing distance and a vehicle lamp.
In order to achieve the above purpose, the invention provides the following technical scheme:
the light guide structure comprises a light mixing part and a light guide part, wherein the light mixing part is fixedly arranged at the light inlet end of the light guide part, light reflecting particles are uniformly dispersed in the light mixing part, and the light mixing distance is shorter as the concentration of the light reflecting particles is higher.
In the present invention, it is preferable that the light guide part is made of a diffusion material, the diffusion material is light diffusion PMMA, and the light guide part is made of PP or PMMA.
In the present invention, it is preferable that the light diffusing PMMA is provided as PMMA8NDF21 or PMMA8NDF22 or PMMA8NDF 23.
In the present invention, preferably, the light guide portion is configured to be a strip structure, the three groups of side wall surfaces of the light guide portion are configured to be arc-shaped reflecting surfaces, and one group of side wall surfaces is a light exit plane, and the light exit plane is provided with a plurality of groups of optical teeth.
In the present invention, it is preferable that the plurality of sets of the optical teeth are arranged to be more compact to the extent that they are arranged farther from the light source.
In the present invention, it is preferable that the light mixing part and the light guide part are integrally formed by an injection molding process.
In addition, the invention also provides a vehicle lamp structure which is characterized by comprising the light guide structure with the extremely short light mixing distance.
In the present invention, it is preferable that the light guide portions are provided at both ends thereof with light mixing portions, and a light source is provided outside each of the light mixing portions.
In the present invention, it is preferable that the light sources located on both end sides of the light guide portion emit light of different colors.
Compared with the prior art, the invention has the beneficial effects that:
according to the device, the light mixing part is arranged at the light inlet end of the strip-shaped light guide part, the light mixing part is made of the light diffusion material PMMA, and light rays emitted by a light source are reflected for multiple times by the uniformly dispersed light reflecting particles in the light mixing part to achieve the effect of uniform light mixing. Therefore, the light can be uniformly mixed in the light mixing part with a short distance through multiple reflections, so that the light entering the light guide part from the light mixing part is uniformly mixed light which can be directly projected. Because the thickness of the light mixing part made of the light diffusion PMMA material is about 2mm generally, the light mixing distance is greatly reduced compared with the light mixing distance of the traditional light guide structure, and the light mixing distance of the light guide structure of the car light can be effectively reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a light guide structure in the present invention.
Fig. 2 is an enlarged structural diagram at the light-incident end of the light guide structure.
FIG. 3 is a side view showing how closely the optical teeth are arranged in accordance with the present invention.
Fig. 4 is a schematic view of the general structure of the light mixing part according to the present invention.
FIG. 5 is a schematic view of a vehicular lamp with light sources at both ends according to the present invention.
In the drawings: 1. a light mixing section; 10. an arc-shaped reflecting surface; 11. a light exit plane; 2. a light guide part; 3. an optical tooth; 4. fastening an end socket; 5. a light source.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, a preferred embodiment of the present invention provides a light guide structure with a very short light mixing distance, where the light guide structure includes a light mixing part 1 and a light guide part 2, the light mixing part 1 is fixedly disposed at a light entrance end of the light guide part 2, light reflecting particles are uniformly dispersed in the light mixing part 1, and the light mixing distance is shorter as the concentration of the light reflecting particles is higher. The light mixing part is manufactured and molded by injection molding through a light diffusion PPMA material, usually PMMA8NDF21, PMMA8NDF22 or PMMA8NDF23 on the market are purchased as raw materials and injection molding is carried out according to a required shape, the finally appearing light mixing part has the effect that the inside is in a milky mist dispersion state, and PMMA8NDF21, PMMA8NDF22 or PMMA8NDF23 are materials which can be directly purchased on the market. And forming into the required shape by a mould at the later stage. Because of the existence of a large number of micro reflective particles inside the light mixing part 1, the projection angles between the light rays become more disordered after the entering light rays are reflected and mixed in various directions for a plurality of times, thereby achieving the effect of uniform mixing of the light rays. The light mixing part 1 is fixed at the light inlet end of the light guide part 2 through a bonding or two-color injection molding process, and the cross sections of the light mixing part 1 and the light guide part 2 are the same, so that light rays reflected for many times by the light mixing part 1 through the internal reflective particles can be ensured to enter the light guide part 2 from the interface without leakage. The thickness of the light-mixing portion 1 is reduced as the concentration of the dispersed light-reflecting particles in the light-mixing portion 1 is higher.
The light guide part 2 is made of a diffusion material, the diffusion material is light diffusion PMMA (acryl) which is set to PMMA8NDF21 or PMMA8NDF22 or PMMA8NDF 23. DF21-DF23 are light diffusing materials of the same series, and the concentration of reflective particles inside the materials after injection molding is different, so that the light mixing part 1 with different thickness requirements can be manufactured. The material can be directly purchased from commercial manufacturers, and then melted by an injection molding process and formed again.
The light guide part 2 is made of PP (polypropylene) or PMMA, and the surface of the light guide part 2 is a smooth transparent structure.
As shown in fig. 4, the light guide portion 2 is configured to be a strip-shaped structure, three groups of side wall surfaces of the four groups of side wall surfaces of the light guide portion 2 are configured to be arc-shaped reflecting surfaces 10, and one group of side wall surfaces is a light exit plane 11, and the four groups of side wall surfaces all perform total reflection on the light conducted in the inner space of the light guide portion 2 to ensure that no side wall surface of the light exits on the light exit plane 11, and a plurality of groups of optical teeth 3 are arranged on the light exit plane 11, and the light exits from the surface of the optical teeth 3 when reaching the optical teeth 3. The light guide part is fixedly provided with a fixed buckle end 4 matched with an external mounting structure, and the fixed buckle end is used for fixing the light guide structure in the later period.
As shown in fig. 3, the multiple sets of the optical teeth 3 are arranged more closely as they are farther from the light source 5, and the amount of the remaining light transmitted to the light source 5 is smaller, so that the number of the optical teeth 3 is increased by increasing the close degree of the arrangement of the optical teeth 3, and the amount of light transmission is increased, thereby ensuring that the outgoing light is more uniform. The optical tooth 3 is a triangular protrusion structure, wherein one side surface is a light exit surface, a part of light propagating in the light guide part 2 can be projected outwards, the light propagates in the whole light guide part 2 and is similar to the propagation of light waves in the existing optical fiber, and when a part of light with a proper projection angle strikes the light exit surface of the optical tooth 3, the part of light exits outwards.
The light mixing part 1 and the light guide part 2 are integrally manufactured and molded by a two-color injection molding process.
As shown in fig. 5, the present invention further provides a vehicular lamp structure, which is characterized by comprising the above-mentioned light guide structure with an extremely short light mixing distance. The two ends of the light guide part 2 are provided with light mixing parts 1, and the outer side of each light mixing part 1 is provided with a light source 5. This car light structure is used for running-through central lamp strip more, and its overall structure is comparatively straight, and length is longer, provides the shining of light source 5 simultaneously from both sides through setting up at both ends simultaneously and mix light portion 1, can guarantee the whole luminance of leading the light portion 2, can adjust the luminous homogeneity everywhere of strip light portion 2 through the inseparable degree of the range of optics tooth 3 simultaneously.
The light sources 5 positioned on both end sides of the light guide portion 2 have different emission colors. When the colors of the light sources 5 arranged at the two ends are different, the color of the light emitted by the light guide part 2 can be adjusted by adjusting the lighting sequence and the brightness of the two groups of light sources 5, the car lamp with the structure can be set as a welcome lamp or an atmosphere lamp, and the light colors with different color effects are mixed by the light sources 5 with different colors to increase the attractiveness of the car lamp.
The working principle is as follows:
the light guide structure is fixed at a specific position of the vehicle lamp by a worker, then the L ED light source is fixed on the PCB substrate, then the PCB substrate is fixed in the vehicle lamp installation cavity, the L ED light source is ensured to be positioned at the outer side of the light mixing part 1, and then the vehicle lamp is lightened by lightening the L ED light source.
Claims (9)
1. The light guide structure with the extremely short light mixing distance is characterized by comprising a light mixing part (1) and a light guide part (2), wherein the light mixing part (1) is fixedly arranged at the light inlet end of the light guide part (2), light reflecting particles are uniformly dispersed in the light mixing part (1), and the light mixing distance is shorter as the concentration of the light reflecting particles is higher.
2. A light-guiding structure with extremely short mixing distance as defined in claim 1, characterized in that the light-guiding part (2) is made of a diffusing material, which is light-diffusing PMMA, and the light-guiding part (2) is made of PP or PMMA.
3. A light-guiding structure with extremely short light-mixing distance according to claim 2, characterized in that the light-diffusing PMMA is provided as PMMA8N DF21 or PMMA8N DF22 or PMMA8N DF 23.
4. A light guide structure with very short light mixing distance according to claim 1, characterized in that the light guide part (2) is configured as a strip structure, three sets of side wall surfaces of the light guide part (2) are configured as arc reflective surfaces (10), and one set of side wall surfaces is a light exit plane (11), and a plurality of sets of optical teeth (3) are arranged on the light exit plane (11).
5. A light-guiding structure with very short mixing distance as defined in claim 4, characterized in that the multiple sets of said optical teeth (3) are arranged more closely together the farther away from the light source (5).
6. A light guide structure with an extremely short mixing distance as claimed in claim 1, characterized in that the light mixing part (1) and the light guide part (2) are integrally manufactured by injection molding.
7. A vehicular lamp structure characterized by comprising a light guide structure having an extremely short light mixing distance as recited in any one of claims 1 to 6.
8. A light guide structure with very short light mixing distance according to claim 7, characterized in that both ends of the light guide part (2) are provided with light mixing parts (1), and the outer side of each group of light mixing parts (1) is provided with a light source (5).
9. A light-guiding structure with an extremely short mixing distance as defined in claim 8, characterized in that the luminous colors of the light sources (5) located at both end sides of the light-guiding part (2) are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404220.6A CN111486411A (en) | 2020-05-13 | 2020-05-13 | Light guide structure with extremely short light mixing distance and car lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404220.6A CN111486411A (en) | 2020-05-13 | 2020-05-13 | Light guide structure with extremely short light mixing distance and car lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111486411A true CN111486411A (en) | 2020-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010404220.6A Pending CN111486411A (en) | 2020-05-13 | 2020-05-13 | Light guide structure with extremely short light mixing distance and car lamp |
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| CN (1) | CN111486411A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112258948A (en) * | 2020-11-03 | 2021-01-22 | 重庆广播电视大学重庆工商职业学院 | PCB circuit board circuit simulation analysis demonstration teaching device |
-
2020
- 2020-05-13 CN CN202010404220.6A patent/CN111486411A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112258948A (en) * | 2020-11-03 | 2021-01-22 | 重庆广播电视大学重庆工商职业学院 | PCB circuit board circuit simulation analysis demonstration teaching device |
| CN112258948B (en) * | 2020-11-03 | 2022-07-12 | 重庆广播电视大学重庆工商职业学院 | PCB circuit board circuit simulation analysis demonstration teaching device |
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