CN108571700B - Light guide structure utilizing total reflection and lighting device adopting same - Google Patents
Light guide structure utilizing total reflection and lighting device adopting same Download PDFInfo
- Publication number
- CN108571700B CN108571700B CN201711076496.0A CN201711076496A CN108571700B CN 108571700 B CN108571700 B CN 108571700B CN 201711076496 A CN201711076496 A CN 201711076496A CN 108571700 B CN108571700 B CN 108571700B
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- China
- Prior art keywords
- light guide
- light
- total reflection
- led
- guide structure
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- 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.)
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- 239000002245 particle Substances 0.000 claims abstract description 47
- 238000005286 illumination Methods 0.000 claims abstract description 7
- 230000000903 blocking effect Effects 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
-
- 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
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
-
- 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
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/19—Attachment of light sources or lamp holders
- F21S43/195—Details of lamp holders, terminals or connectors
-
- 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
- F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
-
- 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
- F21S43/27—Attachment thereof
-
- 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
- F21S43/31—Optical layout thereof
- F21S43/315—Optical layout thereof using total internal reflection
-
- 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
-
- 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
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/20—Direction indicator lights
-
- 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
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/55—Daytime running lights [DRL]
-
- 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)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a light guide structure utilizing total reflection and an illumination device adopting the light guide structure, and belongs to the technical field of vehicle illumination. The LED particle is arranged on the circuit board above the light guide by utilizing the principle of total reflection, the light is transmitted from the light source to the coupler through the entrance face, is input into the light guide through coupling and is reflected by the main reflection face, then reaches the exit face, and is emitted to the front of the lighting device through the outer lens; the main reflecting surface is 45 degrees to the vertical direction of the LED particle assembly surface. The light guide structure has the advantages of good light emitting effect, simple assembly and high reliability.
Description
Technical Field
The invention belongs to the technical field of illumination for vehicles, and particularly relates to a light guide structure utilizing total reflection and an illumination device adopting the light guide structure.
Background
The conventional light guide 3 with the required width on the exit surface generally arranges the LED particles 2 opposite to the exit surface, as shown in fig. 1, the outer lens is generally curved, and to ensure good uniformity, only a scheme of adding a flexible circuit board 6 to a small aluminum block 7 for heat dissipation can be used, and for space reasons, the space between the LED particles 2 and subsequent assembly are limited.
In addition, the distance between the LED particles 2 cannot be too small, otherwise the small aluminum block 7 which does not dissipate heat is arranged. In addition, if the number of LED particles 2 is too large, the assembly may be time consuming and the efficiency may be low.
Disclosure of Invention
In order to solve the defects of complex assembly and low efficiency in the prior art, the invention provides the light guide structure utilizing total reflection and the lighting device adopting the light guide structure, which can realize high assembly efficiency, have good luminous uniformity and can arrange two LED particles with different colors.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a light guide structure utilizing total reflection, it includes circuit board, LED granule, light guide, decorative circle and outer lens, the circuit board on the light guide is arranged with the LED granule, the light guide is outward to cover and is decorated circle and outer lens, the light guide includes at least a pair of entry face, at least a pair of coupler, at least one main reflecting surface and departure face, the entry face passes the light that sends out from the LED granule to the coupler, input light into the light guide inside through the coupling, and enter into the main reflecting surface and reflect, then light reaches the departure face, send light to the lighting device place ahead through outer lens;
the entrance face of each LED particle emitting light is unique;
different couplers are corresponding to the LED particles with different colors;
a pair of couplers corresponds to one main reflecting surface;
the main reflecting surface is 45 degrees to the vertical direction of the LED particle assembly surface.
Further, the circuit board is a monolithic circuit board.
By adopting the technical scheme, the area of the whole circuit board can be determined according to the heat demand, and the installation can be realized by only assembling the whole circuit board during the assembly, so that the assembly is simple.
Further, two kinds of LED particles are arranged on the circuit board, each two kinds of LED particles with different colors form a pair, and each two corresponding couplers form a pair.
Further, the middle part of the light guide is provided with a light blocking bead.
By adopting the technical scheme, the light spot shielding device is used for shielding the light spot of the light source seen from the gap between the decorative ring and the light guide, and is better in lighting uniformity.
Further, the light blocking spot ribs are treated by dermatoglyph.
By adopting the technical scheme, the light spot at the light source is weakened more.
Further, the light coupled through the coupler is parallel to the vertical direction of the LED particle mounting surface.
Further, the light reflected by the main reflecting surface is parallel to the LED particle mounting surface.
Further, the outer lens adopts two colors of colorless and transparent and black.
By adopting the technical scheme, the black part can shield light leakage.
A lighting device provided with the above-described light guide structure utilizing total reflection.
The beneficial effects are that:
1. by adopting the light guide structure utilizing total reflection, the light guide component can be assembled more conveniently, and the lighting effect can be more uniform.
2. The luminous principle of the invention has unique conception, and can effectively solve the defects of light spots and complex assembly and the like caused by arranging LED particles on the opposite leaving surface.
Drawings
FIG. 1 is a partial schematic view of a conventional light guide structure;
FIG. 2 is an exploded view of one embodiment of the present invention;
FIG. 3 is a partial schematic view of an LED die arrangement on a circuit board according to an embodiment of the present invention;
FIG. 4 is a partial schematic view of an arrangement of couplers on a light guide corresponding to LED particles in accordance with an embodiment of the invention;
in the figure: the LED module comprises a 1-circuit board, 2-LED particles, 3-light guide, 4-decorative rings, 5-external lenses, 6-flexible circuit boards, 7-small heat dissipation aluminum blocks, 11-LED particle assembling surfaces, a vertical direction of 21-LED particle assembling surfaces, 22-white light LED particles, 23-amber light LED particles, 31-entering surfaces, 32-couplers, 33-main reflecting surfaces, 34-light blocking ribs, 35-leaving surfaces, 321-couplers of the white light LED particles and 322-couplers of the amber light LED particles.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The present embodiment provides a light guide structure using total reflection, as shown in fig. 2, which comprises a circuit board 1, LED particles 2, a light guide 3, a decorative ring 4 and an external lens 5, wherein the LED particles 2 are arranged on the circuit board 1 above the light guide 3, the decorative ring 4 and the external lens 5 are covered on the outer surface of the light guide 3, the light guide 3 comprises at least one pair of entrance surfaces 31, at least one pair of couplers 32, at least one principal reflection surface 33 and an exit surface 35, the entrance surfaces 31 transmit the light rays emitted from a light source, namely the LED particles 2, to the couplers 32, the light rays coupled by the couplers 32 are parallel to the vertical direction 21 of the LED particle assembly surface 11, the reflection surfaces of the couplers 32 are parabolic with focus at the light emitting points of the LED particles 2, the entrance surfaces 31 are circular arc surfaces, the light rays are input into the light guide 1 and reach the principal reflection surfaces 33, the principal reflection surfaces 33 are 45 ° with the vertical direction 21 of the LED particle assembly surface 11, the light rays reflected by the principal reflection surfaces 33 are parallel to the LED particle assembly surface 11, namely 135 ° with the principal reflection surfaces, the light rays enter the light guide 3 and exit the light guide surface 35 and then exit the light guide surface 35 to the outside through the light guide pattern 3;
as shown in fig. 2, the middle part of the light guide 3 is provided with a light blocking rib 34 for blocking the light spot of the light source seen from the gap between the decorative ring 4 and the light guide 3; the light blocking spot ribs 34 can be subjected to dermatoglyph treatment for strengthening the effect of blocking light, so that the uniformity after lighting is better;
as shown in fig. 2, the entrance face 31 for each LED particle 2 emitting light is unique;
as shown in fig. 2, a pair of couplers 32 corresponds to one main reflecting surface 33;
as shown in fig. 3, white LED particles 22 and amber LED particles 23 are arranged in pairs on one monolithic circuit board 1, and the monolithic circuit board 1 can be assembled efficiently.
As shown in fig. 4, a coupler 321 of white LED particles and a coupler 322 of amber LED particles are arranged in pairs on the light guide 3;
as shown in fig. 2, the outer lens 5 is bi-colored, i.e., colorless and transparent, and black, and the black portion can block light leakage elsewhere, so that the portion of the lighting device that leaks light can only be the originally defined area.
By adopting the light guide structure utilizing total reflection, the light guide 3 can be assembled more conveniently, and the lighting effect can be more uniform.
The present embodiment also provides an illumination device provided with the above-described light guide structure utilizing total reflection.
The luminous principle of the invention has unique conception, and can effectively solve the defects of light spots, complex assembly and the like caused by arranging the LED particles 2 on the opposite leaving surface 35.
It should be apparent to those skilled in the art that various modifications or variations can be made in the present invention without requiring any inventive effort by those skilled in the art based on the technical solutions of the present invention.
Claims (9)
1. The utility model provides an utilize light guide structure of total reflection, it includes circuit board (1), LED granule (2), light guide (3), decorative ring (4) and outer lens (5), has arranged LED granule (2) on circuit board (1) above light guide (3), and light guide (3) outside is covered with decorative ring (4) and outer lens (5), its characterized in that: the light guide (3) comprises at least one pair of entrance surfaces (31), at least one pair of couplers (32), at least one main reflection surface (33) and an exit surface (35), the entrance surfaces (31) transmit light rays emitted from a light source, namely the LED particles (2), to the couplers (32), the light rays coupled by the couplers (32) are parallel to the vertical direction (21) of the LED particle assembly surface (11), the reflection surfaces of the couplers (32) are parabolic with the focus at the light emitting point of the LED particles (2), the entrance surfaces (31) are arc surfaces, the light rays are input into the light guide (1) and reach the main reflection surface (33), the main reflection surface (33) is reflected by 45 degrees with the vertical direction (21) of the LED particle assembly surface (11), the light rays reflected by the main reflection surface (33) are parallel to the LED particle assembly surface (11), namely the light rays which form 135 degrees with the main reflection surface (33) and then reach the exit surface (35), the exit surface (35) is provided with patterns, and the light rays pass through the light guide (3) and pass through the illumination patterns to the outside of the illumination device (5);
-said entrance face (31) of each of said LED particles (2) emitting light is unique;
-said LED particles (2) of different colors correspond to different said couplers (32);
a pair of said couplers (32) corresponds to one of said main reflecting surfaces (33).
2. The light guide structure utilizing total reflection according to claim 1, wherein: the circuit board (1) is a whole circuit board.
3. The light guide structure utilizing total reflection according to claim 2, wherein: LED particles (2) with two colors are arranged on the circuit board (1), each two LED particles (2) with different colors form a pair, and each two corresponding couplers form a pair.
4. The light guide structure utilizing total reflection according to claim 1, wherein: the middle part of the light guide (3) is provided with a light blocking rib (34).
5. The light guide structure utilizing total reflection according to claim 4, wherein: the light blocking ribs (34) are treated by dermatoglyph.
6. The light guide structure utilizing total reflection according to claim 1, wherein: the light coupled through the coupler (32) is parallel to the vertical direction (21) of the LED particle mounting surface (11).
7. The light guide structure utilizing total reflection according to claim 1, wherein: the light reflected by the main reflecting surface (33) is parallel to the LED particle mounting surface (11).
8. The light guide structure utilizing total reflection according to claim 1, wherein: the outer lens (5) adopts two colors of colorless transparent and black.
9. A lighting device, characterized by: the lighting device provided with a light guiding structure utilizing total reflection as claimed in any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711076496.0A CN108571700B (en) | 2017-11-06 | 2017-11-06 | Light guide structure utilizing total reflection and lighting device adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711076496.0A CN108571700B (en) | 2017-11-06 | 2017-11-06 | Light guide structure utilizing total reflection and lighting device adopting same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108571700A CN108571700A (en) | 2018-09-25 |
| CN108571700B true CN108571700B (en) | 2024-03-26 |
Family
ID=63576520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711076496.0A Active CN108571700B (en) | 2017-11-06 | 2017-11-06 | Light guide structure utilizing total reflection and lighting device adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108571700B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556993B (en) * | 2020-10-22 | 2023-05-16 | 浙江零跑科技股份有限公司 | Car light uniformity and light distribution performance detection tool and use method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2270389A1 (en) * | 2009-06-30 | 2011-01-05 | Valeo Vision | Optical device, in particular for automotive vehicle |
| CN103574515A (en) * | 2012-07-23 | 2014-02-12 | 法雷奥照明公司 | Light guide for an automobile lighting and/or signaling device |
| CN203880561U (en) * | 2014-06-11 | 2014-10-15 | 大茂伟瑞柯车灯有限公司 | Hidden type side light-emitting LED front fog lamp |
| CN105276486A (en) * | 2015-11-13 | 2016-01-27 | 华晨汽车集团控股有限公司 | Light guide backlight structure for switch block |
| CN205749972U (en) * | 2016-05-04 | 2016-11-30 | 嘉兴海拉灯具有限公司 | A kind of light guide member and there is the car light of this light guide member |
| CN207569782U (en) * | 2017-11-06 | 2018-07-03 | 常州星宇车灯股份有限公司 | A kind of guide structure using total reflection and the lighting device using the guide structure |
-
2017
- 2017-11-06 CN CN201711076496.0A patent/CN108571700B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2270389A1 (en) * | 2009-06-30 | 2011-01-05 | Valeo Vision | Optical device, in particular for automotive vehicle |
| CN103574515A (en) * | 2012-07-23 | 2014-02-12 | 法雷奥照明公司 | Light guide for an automobile lighting and/or signaling device |
| CN203880561U (en) * | 2014-06-11 | 2014-10-15 | 大茂伟瑞柯车灯有限公司 | Hidden type side light-emitting LED front fog lamp |
| CN105276486A (en) * | 2015-11-13 | 2016-01-27 | 华晨汽车集团控股有限公司 | Light guide backlight structure for switch block |
| CN205749972U (en) * | 2016-05-04 | 2016-11-30 | 嘉兴海拉灯具有限公司 | A kind of light guide member and there is the car light of this light guide member |
| CN207569782U (en) * | 2017-11-06 | 2018-07-03 | 常州星宇车灯股份有限公司 | A kind of guide structure using total reflection and the lighting device using the guide structure |
Non-Patent Citations (1)
| Title |
|---|
| 光导设计参数对光强的影响研究;李虎强;韩红亮;;汽车技术(12);第16-18+40页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108571700A (en) | 2018-09-25 |
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