CN111120965A - Large-space high-light-efficiency small-volume thick-wall light guide structure - Google Patents

Large-space high-light-efficiency small-volume thick-wall light guide structure Download PDF

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Publication number
CN111120965A
CN111120965A CN202010032768.2A CN202010032768A CN111120965A CN 111120965 A CN111120965 A CN 111120965A CN 202010032768 A CN202010032768 A CN 202010032768A CN 111120965 A CN111120965 A CN 111120965A
Authority
CN
China
Prior art keywords
thick
light guide
light
total reflection
reflection optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010032768.2A
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Chinese (zh)
Inventor
刘斌
白娜
陈方
刘谦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hainachuan Haila Sanhe Car Light Co ltd
Original Assignee
Hainachuan Haila Sanhe Car Light Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hainachuan Haila Sanhe Car Light Co ltd filed Critical Hainachuan Haila Sanhe Car Light Co ltd
Priority to CN202010032768.2A priority Critical patent/CN111120965A/en
Publication of CN111120965A publication Critical patent/CN111120965A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The invention provides a thick-wall light guide structure with large spacing, high light efficiency and small volume, which is matched with an LED light source for use and is provided with total reflection optical surfaces and diffusion patterns, wherein the diffusion patterns are arranged on a light-emitting slope surface of the thick-wall light guide, 3 total reflection optical surfaces are arranged on the other side surface of the thick-wall light guide, and a 45-degree wedge surface is formed between every two total reflection optical surfaces.

Description

Large-space high-light-efficiency small-volume thick-wall light guide structure
Technical Field
The invention relates to the technical field of vehicle lamps and vehicle lamp light source adjustment, in particular to a thick-wall light guide structure with large space, high light efficiency and small volume.
Background
The automobile becomes an indispensable vehicle in the life of people along with the popularization of the industrial process, the requirements and the improvement on the performance of the automobile lamp are continuously refined, and nowadays, in order to improve the lighting effect and the lightening effect of the automobile lamp, the design requirements of people on the automobile lamp are higher and higher.
In modern automobile appearance design, the modeling is more and more diversified, and the application of the thick-wall light guide sheet on the automobile lamp is more and more common. The light that the thick wall light guide structure sent the LED lamp evenly distributes away, becomes the pointolite of LED lamp into the area source, can reduce the quantity of LED lamp like this at to a great extent, reduces the energy consumption when guaranteeing illuminating effect, can also reduce the price cost of car light simultaneously.
However, in the prior art, the position of the car light LED is often uncertain due to the limitation of the design and the beauty of the structure, and even the car light LED is arranged at the non-right back of the light guide plate, and due to the low scattering and limited irradiation range of the LED, the illumination near the LED side generates dark spots, which causes uneven illumination and affects the modeling effect during lighting. On the premise of complying with the regulations, uniform lighting effect is a main objective which is pursued at present.
In the improvement of the prior art, for CN205174251U, a step surface is mainly added, so that the light emitting surface can completely emit light in the longitudinal direction. Although the step surface is added, the longitudinal light emitting surface can be ensured to be completely lightened, partial light effect is lost, and the transverse light emitting uniformity and the illuminating distance are not helped;
in another prior art improvement, CN209371122U is mainly used to realize stereoscopic effect of lighting effect. However, the structure has low optical efficiency and small illumination distance, and needs more LEDs to realize functions.
Disclosure of Invention
According to the technical problems, the invention provides a thick-wall light guide structure with large space, high light efficiency and small volume, which can solve the problems and adopts the following technical scheme:
a thick-wall light guide structure with large spacing, high light efficiency and small volume is matched with an LED light source for use and is provided with total reflection optical surfaces and diffusion patterns, LED particles are arranged at the rear part or the side surface of the thick-wall light guide, a slope surface is arranged at the light emitting side of the thick-wall light guide, the diffusion patterns are arranged on the slope surface, 3 total reflection optical surfaces are arranged at the top point of the other side surface of the thick-wall light guide, each total reflection optical surface is an arc surface or a spherical surface, and a 45-degree wedge surface is formed between every two 2 total reflection optical surfaces.
In the technical scheme, the diffusion patterns are stripes or grid-shaped bulges which are not at equal intervals.
Preferably, the LED light source is disposed below, on a side portion of, or behind the 3 total reflection optical surfaces.
Preferably, 2 of the 3 total reflection optical surfaces are smooth cambered surfaces, and the other surface is a grid-shaped bulge.
Preferably, the thick-wall light guide structures are arranged in parallel in multiple groups and applied to the vehicle lamp lighting equipment.
In the technical scheme, light rays emitted by the LED light source are refracted through the surface of the thick wall and enter the thick-wall light guide; the light entering the thick-wall light guide is totally reflected on 3 total reflection optical surfaces and is respectively transmitted along the left, middle and right directions; the light rays traveling along the intermediate path,throughAfter a total reflection optical surface, directly refracting out diffusion patterns on the slope surface at the light outgoing side of the thick-wall light guide; after the light rays propagating along the left path or the right path are totally reflected on the other 2 total reflection optical wedge surfaces with the angle of 45 degrees again, the direction of the light path becomes the same as that of the middle path, and the light rays are refracted out through the diffusion patterns on the slope surface on the light outgoing side of the thick-wall light guide, so that the thick-wall light is realizedThe lead is lit for a large distance.
The invention has the beneficial effects that:
the invention provides a thick-wall light guide structure with large spacing, high light efficiency and small volume, which is ingenious in design, and omits a condenser, so that the structure of lighting equipment is more compact, and the distance from a PCB (printed circuit board) to a thick-wall part is greatly reduced; the light total reflection principle of the thick-wall material is utilized, the 360-degree light-emitting characteristic of the LED is fully utilized, the structure is optimized, and the collimating and diffusing patterns are added, so that light can be uniformly diffused from all directions, the optical efficiency and the illuminating distance are improved only by changing the thick-wall light guide physical structure, the optical primary and secondary total reflection is realized, the refraction/total reflection times in a light transmission path are reduced, the sensitivity of an optical system is reduced, and the yield of actual products is improved; the lighting distance is 30-45 mm, the optical efficiency is greatly improved, the lighting distance is increased, the utilization efficiency of the LED light source is greatly improved, the practicability is high, and the practicability is improved.
Drawings
Fig. 1 is a schematic structural diagram of a multi-group combined application state of a thick-walled light guide structure with large pitch, high light efficiency and small volume according to the present invention.
Fig. 2 is a schematic cross-sectional view of a single thick-walled light guide structure with large pitch, high light efficiency and small volume according to the present invention.
FIG. 3 is a schematic diagram of the principle of light refraction of a single cross section of a thick-walled light guide structure of the present invention with large pitch, high light efficiency and small volume.
Fig. 4 is an enlarged structural diagram of light refraction of total reflection occurring on 3 total reflection optical surfaces of a thick-walled light guide structure with large spacing, high light efficiency and small volume according to the present invention.
Fig. 5 is a schematic diagram of practical application of a thick-walled light guide structure with large pitch and high light efficiency and small volume in combination with an LED light source according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a large-pitch high-light-efficiency small-volume thick-wall light guide structure according to an embodiment of the present invention in combination with multiple practical applications of an LED light source.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
The invention will be further illustrated with reference to figures 1-5:
a thick-wall light guide structure with large space, high light efficiency and small volume is matched with an LED light source for use and is provided with total reflection optical surfaces and diffusion patterns, wherein one light emitting side of the thick-wall light guide is a slope surface 2, the slope surface 2 is provided with the diffusion patterns 21, the top point of the other side surface of the thick-wall light guide is provided with 3 total reflection optical surfaces 11, 12 and 13, each total reflection optical surface is a cambered surface or a spherical surface, and a 45-degree wedge surface is formed between every two 2 total reflection optical surfaces.
As shown in fig. 1-6, in operation, the complete optical path is as follows:
the LED light source 3 is arranged at the lower part, the side part or the rear part of the 3 total reflection optical surfaces, and light rays emitted by the LED light source are refracted by the surface of the thick wall and enter the light guide of the thick wall;
2. the light entering the thick-wall light guide is totally reflected on the optical structure of the embodiment, 2 surfaces 11 and 12 of the 3 total reflection optical surfaces are smooth cambered surfaces, the other surface 13 is a latticed bulge, and the light is transmitted along the left, the middle and the right after passing through the 3 total reflection optical surfaces;
3. the light rays transmitted along the middle path are directly refracted out from the light-emitting side slope surface 2 of the thick-wall light guide after passing through the total reflection optical surface with the surface being the latticed bulges; the light transmitted along the left path and the right path is totally reflected again on 2 45-degree wedge surfaces with smooth cambered surfaces, and the light path direction becomes the same as that of the middle path and is refracted out through the patterns on the front surface of the thick-wall light guide.
4. The light is refracted by the left/middle/right light paths to emit light, and the thick-wall light guide is lightened at a large distance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.

Claims (6)

1. A thick-wall light guide structure with large spacing, high luminous efficiency and small volume is matched with an LED light source for use and is characterized in that total reflection optical surfaces and diffusion patterns are arranged, LED particles are arranged at the rear part or the side surface of the thick-wall light guide, a slope surface is arranged at the light emitting side of the thick-wall light guide, the diffusion patterns are arranged on the slope surface, 3 total reflection optical surfaces are arranged at the top point of the other side surface of the thick-wall light guide, each total reflection optical surface is an arc surface or a spherical surface, and a 45-degree wedge surface is formed between every two (2) total reflection optical.
2. A thick-walled light guide structure of claim 1, wherein the diffusing pattern is stripes or grid-like protrusions with unequal spacing.
3. The thick-walled light guide structure of claim 1, wherein the LED light source is disposed under, beside or behind the 3 total reflection optical surfaces.
4. The thick-walled light guide structure of claim 1, wherein 2 of the 3 total reflection optical surfaces are smooth curved surfaces, and the other surface is a grid-like protrusion.
5. The thick-walled light guide structure of claim 1, wherein the thick-walled light guide structure is applied to a vehicle lamp lighting device in a plurality of groups in parallel.
6. The thick-walled light guide structure of claim 1, wherein the light from the LED light source is refracted by the thick-walled surface and enters the thick-walled light guide; the light entering the thick-wall light guide is totally reflected on 3 total reflection optical surfaces and is respectively transmitted along the left, middle and right directions; after passing through a total reflection optical surface, the light transmitted along the middle path is directly refracted out from the diffusion patterns on the slope surface on the light outgoing side of the thick-wall light guide; after the light transmitted along the left path or the right path is totally reflected on the other 2 total reflection optical wedge surfaces with the angle of 45 degrees again, the direction of the light path is changed to be the same as that of the middle path, and the light is refracted out through the diffusion patterns on the slope surface on the light outgoing side of the thick-wall light guide, so that the thick-wall light guide is lightened at a large distance.
CN202010032768.2A 2020-01-13 2020-01-13 Large-space high-light-efficiency small-volume thick-wall light guide structure Pending CN111120965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010032768.2A CN111120965A (en) 2020-01-13 2020-01-13 Large-space high-light-efficiency small-volume thick-wall light guide structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010032768.2A CN111120965A (en) 2020-01-13 2020-01-13 Large-space high-light-efficiency small-volume thick-wall light guide structure

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CN111120965A true CN111120965A (en) 2020-05-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023109306A1 (en) * 2021-12-13 2023-06-22 常州星宇车灯股份有限公司 Thick-wall member structure, light-emitting device, and light-emitting method
CN118110943A (en) * 2024-04-30 2024-05-31 浙江嘉利（丽水）工业股份有限公司 Adopt luminous assembly of diffusion formula thick wall light guide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023109306A1 (en) * 2021-12-13 2023-06-22 常州星宇车灯股份有限公司 Thick-wall member structure, light-emitting device, and light-emitting method
CN118110943A (en) * 2024-04-30 2024-05-31 浙江嘉利（丽水）工业股份有限公司 Adopt luminous assembly of diffusion formula thick wall light guide

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