CN111578227A - Optical unit of automobile rearview mirror lane changing auxiliary system - Google Patents
Optical unit of automobile rearview mirror lane changing auxiliary system Download PDFInfo
- Publication number
- CN111578227A CN111578227A CN202010416812.XA CN202010416812A CN111578227A CN 111578227 A CN111578227 A CN 111578227A CN 202010416812 A CN202010416812 A CN 202010416812A CN 111578227 A CN111578227 A CN 111578227A
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- China
- Prior art keywords
- light
- emitting element
- gathering
- optical unit
- auxiliary system
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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
- 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
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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
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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
- F21S43/31—Optical layout thereof
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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
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
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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]
Abstract
The invention discloses an optical unit of an automobile rearview mirror lane changing auxiliary system, which comprises a shell with a light outlet and a light-emitting element arranged in the shell, wherein a light guide element matched with the light-emitting element is arranged in the shell, and the light guide element comprises a light-gathering part positioned at the end part, a lower reflecting part positioned at the lower side and an upper reflecting part positioned at the upper side; the light-gathering part is arranged opposite to the light-emitting element so as to refract the light emitted by the light-emitting element to form parallel light; the light emitted by the light-emitting element is refracted by the light-condensing part to form parallel light, and then the parallel light is irradiated to the lower reflecting part, the lower reflecting part refracts a part of the parallel light to the light outlet, and the lower reflecting part refracts the rest of the parallel light to the upper reflecting part and then refracts the parallel light to the light outlet by the upper reflecting part. The invention leads light to be led in and output with high efficiency and high energy by arranging the specific light path, and the light condensing part can lead the light conversion rate and the utilization rate to be high.
Description
Technical Field
The invention relates to the technical field of automobile rearview mirrors, in particular to an optical unit of an automobile rearview mirror lane changing auxiliary system.
Background
The automobile outer rear-view mirror is an automobile accessory for a driver to observe the running states of a rear vehicle and a pedestrian in the automobile running process, is necessary for safe driving, and can be used for enabling the driver to observe the visual field in a specific direction by adjusting the angle of the rear-view mirror with the aid of the automobile outer rear-view mirror surface driver, so that safe driving is facilitated. It is well known that currently in automobile driving, the driver is blind, which is the position that the driver cannot see when looking at the mirror, and looking at these blind areas requires the driver to turn his head or even stretch his neck to see if some other object has entered the blind area.
To realize the blind area instruction function, present domestic and foreign technology is when detecting the object of perception in the blind area through radar signal, with signal transmission driving computer, rethread driving computer sends the instruction, then the pilot lamp scintillation of control rear-view mirror lens back, leads into driver's eyes so that reach warning purpose with light.
The difficulty of this technique is that the warning indicator should be bright enough from the driver's perspective and dark enough at other angles to achieve the desired warning effect. The related art blind area warning indicator for the automobile outside rear view mirror includes a backlight unit disposed inside the vehicle outside rear view mirror, and the backlight unit is attached to the back surface of the glass of the etching indicator.
With respect to the related art of such a backlight unit, there are disadvantages as follows: 1. the LED light is transmitted in a set light path, the transmission medium is air, when the local air density is uneven, the transmission direction of the light can be changed, and the light energy efficiency can be greatly reduced; 2. the LED direct light reflects the light through the reflecting surface, so that the required light energy is obtained, but the light which is diffused in the process is more, so that the light energy required by the function cannot be actually met, the number of Light Sources (LEDs) has to be increased, and the cost is increased; 3. when the LED light source in the prior art emits light, no condenser is used for condensing the light, the light emitted by the LED cannot be effectively received, and the light energy loss is serious; 4. the light path in the prior art is not completely closed, and a reflective coating is required to be coated on the periphery of the light path, so that the structure is poor in waterproof performance, the structure is complex, and the market cost is increased.
Disclosure of Invention
To prior art's not enough and defect, provide an automobile rearview mirror auxiliary system that changes lane's optical unit for through setting up specific light path, light is leading-in, the high-efficient high energy of output, and the spotlight portion can make light conversion rate and utilization ratio can be high-efficient moreover.
In order to achieve the above object, the present invention provides the following technical solutions.
An optical unit of an automobile rearview mirror lane changing auxiliary system comprises a shell with a light outlet and a light emitting element arranged in the shell, wherein a light guide element matched with the light emitting element is arranged in the shell, and the light guide element comprises a light gathering part positioned at the end part, a lower reflecting part positioned at the lower side and an upper reflecting part positioned at the upper side; the light-gathering part is arranged opposite to the light-emitting element so as to refract the light emitted by the light-emitting element to form parallel light; the light emitted by the light-emitting element is refracted by the light-condensing part to form parallel light, and then the parallel light is irradiated to the lower reflecting part, the lower reflecting part refracts a part of the parallel light to the light outlet, and the lower reflecting part refracts the rest of the parallel light to the upper reflecting part and then refracts the parallel light to the light outlet by the upper reflecting part.
The invention has the beneficial effects that: the optical unit of the invention has the advantages that through the arranged light guide element, the light emitted by the light emitting element is subjected to large-area light condensation through the light condensation part, and the scattered light of the light emitting element is converted into parallel light, so that the light energy emitted by the light emitting element is fully utilized, the light energy loss is less, the light is refracted through the lower reflecting part, part of the light is directly emitted from the light outlet, part of the light is refracted to the upper reflecting part, the light is refracted through the second upper reflecting surface and then emitted from the light outlet, the light output efficiency is high, through the arrangement of the specific light path, the light is guided in and output with high efficiency and high energy, the light energy required by the function can be met, and the light emitted by the light emitting element is used as a transmission medium through the light guide element to form a.
As an improvement of the present invention, the light-condensing portion includes a first light-condensing surface and a second light-condensing surface connected to each other, wherein the first light-condensing surface is disposed obliquely downward with respect to the light-emitting element, the second light-condensing surface is disposed obliquely upward with respect to the light-emitting element, and an included angle formed between the first light-condensing surface and the second light-condensing surface is between 90 ° and 150 °.
As an improvement of the present invention, the lower reflection portion includes a first lower reflection surface and a second lower reflection surface, wherein the first lower reflection surface is horizontally disposed along an axis X and connected to the first light-gathering surface, the second lower reflection surface is connected to the first lower reflection surface and obliquely disposed upward, and an included angle formed between the first lower reflection surface and the second lower reflection surface ranges from 90 ° to 180 °.
As an improvement of the present invention, the upper reflection portion includes a first upper reflection surface and a second upper reflection surface, wherein the first upper reflection surface is horizontally disposed along an axis X and connected to the second light condensation surface, the second upper reflection surface is obliquely disposed upward and connected to the first upper reflection surface, and an included angle formed between the first upper reflection surface and the second upper reflection surface is 45 ° to 180 °.
As an improvement of the invention, the upper reflecting part and the lower reflecting part are both coated with light reflecting coatings.
As a modification of the present invention, the second lower reflecting surface has a striped surface formed thereon in the lateral direction.
As a refinement of the invention, the spacing between the light-guiding element and the light-emitting element is between 0 and 4 mm.
As an improvement of the present invention, the lower reflection portion further includes a third lower emission surface connected to the second lower reflection surface, the light guide element further includes a light exit surface connected to the third lower reflection surface and the second upper reflection surface, the light exit surface is disposed opposite to the light exit opening, the housing is further provided with a diffusion film at the light exit opening, and the diffusion film is attached to the light exit surface.
As an improvement of the invention, the shell is also provided with a ventilation port communicated with the interior of the shell, and the ventilation port is provided with a ventilation film.
As an improvement of the present invention, the housing is integrally formed with the light guide element.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a schematic exploded view of the present invention.
Fig. 4 is a schematic view of the light condensing effect of the light condensing part of the present invention.
FIG. 5 is a schematic view of the refraction effect of the lower reflection part of the present invention.
FIG. 6 is a schematic diagram of the refraction effect of the upper reflection part of the present invention.
Fig. 7 is a schematic diagram of the light condensing effect when the included angle between the first light condensing surface and the second light condensing surface exceeds the range.
FIG. 8 is a schematic diagram of the refraction effect of the present invention when the included angle between the first lower reflective surface and the second lower reflective surface is out of range.
FIG. 9 is a schematic diagram of the refraction effect of the present invention when the included angle between the first upper reflecting surface and the second upper reflecting surface exceeds the range.
In the figure, 1, a housing; 11. a light outlet; 12. a ventilation opening; 2. a light emitting element; 3. a light guide element; 31. a light-condensing section; 311. a first light-condensing surface; 312. a second condenser surface; 32. a lower reflection part; 321. a first lower reflective surface; 322. a second lower reflective surface; 323. a third lower reflective surface; 33. an upper reflection part; 331. a first upper reflective surface; 332. a second upper reflective surface; 34. a light-emitting surface; 4. a diffusion membrane; 5. and (3) a breathable film.
Detailed Description
The invention is further explained with reference to the drawings.
Referring to fig. 1 to 6, the optical unit of the lane-changing auxiliary system for the rearview mirror of the automobile comprises a housing 1, and a light-emitting element 2 disposed in the housing 1, in the present embodiment, the light-emitting element 2 is an LED lamp bead, the central axis of the LED lamp bead is arranged along the axis X, the shell body 1 is provided with a light outlet 11, the central axis of the light outlet 11 is arranged along the axis Y, the light guide element 3 matched with the light emitting element 2 is arranged in the shell 1, the distance between the light guide element 3 and the light emitting element 2 is 0-4 mm, the maximum light energy utilization can be achieved at the moment, in the invention, the light guide element 3 is glass or PMMA resin, the light guide element 3 mainly comprises a light gathering part 31 which is positioned at one end of the light guide element 3 body and is opposite to the light emitting element 2, a lower reflecting part 32 which is positioned at the lower side of the light guide element 3 body and an upper reflecting part 33 which is positioned at the upper side of the light guide element 3 body; the light-gathering portion 31 includes a first light-gathering surface 311 and a second light-gathering surface 312 connected with each other, wherein a joint of the first light-gathering surface 311 and the second light-gathering surface 312 is disposed opposite to the light-emitting element 2, the first light-gathering surface 311 is disposed obliquely downward relative to the light-emitting element 2, the second light-gathering surface 312 is disposed obliquely upward relative to the light-emitting element 2, and an included angle formed between the first light-gathering surface 311 and the second light-gathering surface 312 is an obtuse angle, so that the light-gathering device is flat, since the light emitted by the light-emitting element 2 is angular and not parallel, the light emitted by the light-guiding element 3 can be gathered by the first light-gathering surface 311 and the second light-gathering surface 312 and the scattered light emitted by the light-guiding element 3 can be converted into parallel light, and the flat light-gathering device can efficiently receive the light energy of the light-emitting element 2, and simultaneously satisfy a small structural space, and the flat light-gathering, space is reserved for later-stage optimization and adjustment, and diversified requirements are met. In this embodiment, an included angle formed between the first light-gathering surface 311 and the second light-gathering surface 312 is between 90 ° and 150 °, so that the light-gathering effect of the light-gathering portion 31 is optimal.
Referring to fig. 7, when the included angle formed between the first light-gathering surface 311 and the second light-gathering surface 312 is outside the range, the light emitted by the light-emitting element 2 cannot be converted into parallel light, and the light energy loss is large.
Referring to fig. 8, when the included angle formed between the first lower reflecting surface 321 and the second lower reflecting surface 322 is outside the range, a part of the light cannot be emitted through the lower reflecting portion 32.
The upper reflection portion 33 includes a first upper reflection surface 331 and a second upper reflection surface 332, wherein the first upper reflection surface 331 is horizontally disposed along an axis X and connected to the second light condensation surface 312, the second upper reflection surface 332 is disposed obliquely upward and connected to the first upper reflection surface 331, an included angle is formed between the first upper reflection surface 331 and the second upper reflection surface 332, and specifically, the included angle formed between the first upper reflection surface 331 and the second upper reflection surface 332 is 45 ° to 180 °, so that the upper reflection portion 33 has the best reflection effect on light.
Referring to fig. 9, when the included angle formed between the first upper reflecting surface 331 and the second upper reflecting surface 332 is outside the range, a part of the light cannot be emitted through the upper reflecting portion 33.
In the optical unit, the light emitted by the light-emitting element 2 is largely condensed by the light-condensing part 31 through the light-guiding element 3, and the scattered light of the light-emitting element 2 is converted into parallel light, so that the light energy emitted by the light-emitting element 2 is fully utilized, the light is refracted by the second lower reflecting surface 322, one part of the light is directly emitted from the light outlet 11, the other part of the light is refracted to the second upper reflecting surface 332, the light is refracted by the second upper reflecting surface 332 and then emitted from the light outlet 11, the upper reflecting part 33 reflects the light to one side of the light outlet, so that the emitted light on one side of the light outlet is relatively more, the visual uniformity is not excessively influenced, the related requirements of the industry are met, and the ideal warning effect can be achieved.
Through setting up specific light path for light is leading-in, high-efficient high energy is exported, and for carrying out the transmission light through the air among the prior art, when local air density is uneven, the propagation direction of light can change, and luminous efficiency can greatly reduced this moment, adopt glass or PMMA resin to form light guide element 3 as the propagation medium in the invention, the light that light-emitting component 2 sent passes through light guide element 3 as the propagation medium, forms confined light propagation path, and density is even, and the propagation direction of light can not change, has guaranteed luminous efficiency.
As an improvement of the present invention, the upper reflecting portion 33 and the lower reflecting portion 32 are both coated with a reflective coating, which can prevent light from leaking out by 100%, and the second lower reflecting surface 322 is formed with a striped surface arranged along the transverse direction, which can reflect the converted parallel light and reflect the light to the light outlet 11, so that the reflection is more uniform and the reflection effect is better.
As an improvement of the present invention, the lower reflection portion 32 further includes a third lower emission surface connected to the second lower reflection surface 322, the light guide element 3 further includes a light emitting surface 34 connected to the third lower reflection surface 323 and the second upper reflection surface 332, the light emitting surface 34 is parallel to and opposite to the light outlet 11, in this embodiment, the light emitting surface 34 is rectangular, and the size of the light emitting surface is 9mm by 9mm, so that the light source energy output can be maximized, and the area uniformity of the light emitting surface 34 is optimal. The uniformity of the light exit surface 34 cannot be ensured by the excessively large light exit 11. Still be equipped with on the casing 1 and be located the diffusion barrier 4 of light-emitting port 11 department, diffusion barrier 4 with go out the laminating of light face 34 mutually, light after lower reflection part 32 and the refraction of last reflection part 33 passes through diffusion barrier 4 earlier and then jets out through light-emitting port 11, makes light-emitting light more even through diffusion barrier 4.
As an improvement of the present invention, the housing 1 is further provided with a ventilation port 12 communicating with the inside of the housing 1, the ventilation port 12 is provided with a ventilation film 5, heat generated by the light emitting element 2 in the housing 1 can be discharged to the outside by providing the ventilation port 12, the risk of falling off of a degummed product or water inflow in the housing 1 can be avoided, and fogging can be prevented at the same time, the ventilation port 12 can be closed by providing the ventilation film 5, and the ventilation function of the ventilation port 12 can be prevented from being affected. The casing 1 with leaded light component 3 integrated into one piece adopts twice forming process, forms a part, and the first step is with leaded light component 3 shaping earlier, and leaded light component 3 and casing 1 integrated into one piece form confined light propagation path again, and structural waterproof performance is good, and this kind of design avoids receiving external factor's influence in the light propagation process moreover, has also simplified production technology simultaneously, reduce cost.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides an optical unit of automobile rearview mirror auxiliary system that changes lane, includes the casing that has the light-emitting window and sets up the light emitting component in the casing which characterized in that: a light guide element matched with the light emitting element is arranged in the shell and comprises a light gathering part positioned at the end part, a lower reflecting part positioned at the lower side and an upper reflecting part positioned at the upper side; the light-gathering part is arranged opposite to the light-emitting element so as to refract the light emitted by the light-emitting element to form parallel light; the light emitted by the light-emitting element is refracted by the light-condensing part to form parallel light, and then the parallel light is irradiated to the lower reflecting part, the lower reflecting part refracts a part of the parallel light to the light outlet, and the lower reflecting part refracts the rest of the parallel light to the upper reflecting part and then refracts the parallel light to the light outlet by the upper reflecting part.
2. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 1, characterized in that: the light-gathering part comprises a first light-gathering surface and a second light-gathering surface which are connected, wherein the first light-gathering surface is obliquely arranged downwards relative to the light-emitting element, the second light-gathering surface is obliquely arranged upwards relative to the light-emitting element, and an included angle formed between the first light-gathering surface and the second light-gathering surface is 90-150 degrees.
3. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 2, characterized in that: the lower reflecting part comprises a first lower reflecting surface and a second lower reflecting surface, wherein the first lower reflecting surface is horizontally arranged and is connected with the first light gathering surface, the second lower reflecting surface is connected with the first lower reflecting surface and is obliquely arranged upwards, and the included angle formed between the first lower reflecting surface and the second lower reflecting surface ranges from 90 degrees to 180 degrees.
4. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 3, characterized in that: the second lower reflecting surface is provided with a striped surface.
5. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 2, characterized in that: the upper reflecting part comprises a first upper reflecting surface and a second upper reflecting surface, wherein the first upper reflecting surface is horizontally arranged and connected with the second light condensing surface, the second upper reflecting surface is connected with the first upper reflecting surface and obliquely and upwards arranged, and an included angle ranging from 45 degrees to 180 degrees is formed between the first upper reflecting surface and the second upper reflecting surface.
6. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 1, characterized in that: the light guide element further comprises a light outlet face opposite to the light outlet, and the shell is further provided with a diffusion film located at the light outlet, and the diffusion film is attached to the light outlet face.
7. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 1, characterized in that: and the upper reflecting part and the lower reflecting part are both coated with a reflecting coating.
8. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 1, characterized in that: the distance between the light guide element and the light emitting element is 0 to 4 mm.
9. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 1, characterized in that: the shell is further provided with a ventilation opening communicated with the inside of the shell, and a ventilation film is arranged at the ventilation opening.
10. The optical unit of the lane change auxiliary system for rearview mirrors of automobiles according to claim 1, characterized in that: the housing and the light guide element are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010416812.XA CN111578227A (en) | 2020-05-15 | 2020-05-15 | Optical unit of automobile rearview mirror lane changing auxiliary system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010416812.XA CN111578227A (en) | 2020-05-15 | 2020-05-15 | Optical unit of automobile rearview mirror lane changing auxiliary system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111578227A true CN111578227A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010416812.XA Pending CN111578227A (en) | 2020-05-15 | 2020-05-15 | Optical unit of automobile rearview mirror lane changing auxiliary system |
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| Country | Link |
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| CN (1) | CN111578227A (en) |
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| CN210126477U (en) * | 2019-04-18 | 2020-03-06 | 上海汽车集团股份有限公司 | Blind area monitoring alarm lamp |
| CN110878933A (en) * | 2018-09-06 | 2020-03-13 | 常州星宇车灯股份有限公司 | Light-emitting structure of thick-wall part for vehicle |
| CN211976805U (en) * | 2020-05-15 | 2020-11-20 | 王丹 | Optical unit of automobile rearview mirror lane changing auxiliary system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104160210A (en) * | 2012-03-12 | 2014-11-19 | 齐扎拉光系统有限责任公司 | Light guiding element for a laser vehicle headlight |
| CN203010497U (en) * | 2012-12-10 | 2013-06-19 | 堤维西交通工业股份有限公司 | Integrated radial pattern car light lens |
| CN103591515A (en) * | 2013-11-25 | 2014-02-19 | 福州西诚汽车控制系统有限公司 | Automobile rotary knob light-guiding piece and automobile rotary knob |
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| CN211976805U (en) * | 2020-05-15 | 2020-11-20 | 王丹 | Optical unit of automobile rearview mirror lane changing auxiliary system |
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Application publication date: 20200825 |
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| RJ01 | Rejection of invention patent application after publication |