CN113370760A - Rear windshield subassembly and car - Google Patents

Rear windshield subassembly and car Download PDF

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Publication number
CN113370760A
CN113370760A CN202110737677.3A CN202110737677A CN113370760A CN 113370760 A CN113370760 A CN 113370760A CN 202110737677 A CN202110737677 A CN 202110737677A CN 113370760 A CN113370760 A CN 113370760A
Authority
CN
China
Prior art keywords
light
laser
rear windshield
lens
transmitting
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
CN202110737677.3A
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Chinese (zh)
Inventor
纳霄
王梓旭
吕甲甲
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.)
Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Original Assignee
Evergrande Hengchi New Energy Automobile Research Institute Shanghai 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 Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd filed Critical Evergrande Hengchi New Energy Automobile Research Institute Shanghai Co Ltd
Priority to CN202110737677.3A priority Critical patent/CN113370760A/en
Publication of CN113370760A publication Critical patent/CN113370760A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/18—Windows; Windscreens; Accessories therefor arranged at the vehicle rear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
    • 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
    • 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
    • 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
    • F21W2103/35—Brake 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
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The application discloses a rear windshield assembly and an automobile, which comprise a rear windshield, a laser and an optical lens; the laser and the optical lens are respectively positioned on the outer side of the rear windshield; the rear windshield is provided with a first surface and a second surface which are oppositely arranged, and the second surface is provided with a brake lamp light emitting area; one end of the rear windshield, facing the optical lens, is provided with a light inlet surface; the light emitted by the laser can be reflected to the light inlet surface through the optical lens, is refracted by the light inlet surface, enters the rear windshield, is reflected by the second surface and the first surface in sequence, and is finally emitted from the light emitting area of the brake lamp. The application discloses back windshield subassembly and car sends out light zone integration in the back windshield with the brake light, has realized high-order brake light function, and occupation space is little, and does not have the evagination structure, has reduced the windage.

Description

Rear windshield subassembly and car
Technical Field
The application relates to the technical field of high-mount stop lamps, in particular to a rear windshield assembly and an automobile.
Background
The high-order stop lamp of car is in the rear portion of car for remind the vehicle or pedestrian behind when the vehicle brakes.
In the prior art, the high-mount stop lamp is an independent light emitting module. The independent high-mount stop lamp is realized by the following steps: the LED is integrated on the PCB (or electric bulbs are used) to form a light-emitting component, and the light-emitting component is integrated with a bracket on the back side, a radiator, a reflector on the front side, a transparent mask and the like to form a high-mount stop lamp. In the prior art, the high-mount stop lamp can be mounted on a spoiler at the tail part and can also be adhered to a rear windshield.
The independent high-mount stop lamp in the prior art occupies a large space, and the external high-mount stop lamp can increase wind resistance.
Disclosure of Invention
An object of this application provides a rear windshield subassembly and car realizes sending out the light zone integration in rear windshield with the brake light, and the light that the laser instrument sent sends out through sending out light zone through the brake light at last after the conduction, has realized high-order brake light function, and occupation space is little, and does not have evagination structure, has reduced the windage.
The technical scheme of the application provides a rear windshield assembly, which comprises a rear windshield, a laser used for emitting light and an optical lens used for reflecting the light emitted by the laser to the rear windshield;
the laser and the optical lens are respectively positioned on the outer side of the rear windshield;
the rear windshield is provided with a first surface and a second surface which are oppositely arranged and can reflect light, and a brake lamp light emitting area is arranged on the second surface;
one end of the rear windshield, facing the optical lens, is provided with a light inlet surface;
an included angle between the light inlet surface and the second surface is an acute angle, and an included angle between the light inlet surface and the first surface is an obtuse angle;
the light emitted by the laser can be reflected to the light inlet surface through the optical lens, is refracted by the light inlet surface, enters the rear windshield, is reflected by the second surface and the first surface in sequence, and is finally emitted from the light emitting area of the brake lamp.
In one optional technical scheme, the brake light emitting area extends along the width direction of the rear windshield;
in the extending direction along the light emitting area of the stop lamp, the optical lens is positioned on one side of the laser, and the light reflecting surface of the optical lens inclines towards the laser side and forms an acute angle with the light inlet surface.
In one optional technical scheme, a plurality of optical lenses are arranged on one side of the laser at intervals;
the optical lens which is farthest away from the laser is a total reflection lens, and the optical lenses which are positioned between the total reflection lens and the laser are light-transmitting and light-reflecting lenses which can transmit light and reflect light;
the light transmittance of the light-transmitting reflective mirror is sequentially reduced in a direction from the laser to the total reflection mirror.
In one optional technical scheme, a light-transmitting film is arranged on the light-in surface and the light-out surface of each light-transmitting and light-reflecting lens, and a first total reflection film is arranged on the light-in surface of the total reflection lens;
the thickness of the light transmission film of the light transmission reflection lens is sequentially thickened along the direction from the laser to the total reflection lens.
In one optional technical solution, in the width direction along the rear windshield, the light entrance surface is arc-shaped, and the curvature radius of the light entrance surface is R;
the section of the light-transmitting and light-reflecting lens along the width direction of the rear windshield is in an isosceles trapezoid shape, wherein an included angle between a light incident surface and a light emergent surface of the light-transmitting and light-reflecting lens is alpha;
the incident angle of the light incident surface of the light-transmitting and light-reflecting lens is theta, and the refraction angle of the light emergent surface of the light-transmitting and light-reflecting lens is omega;
the distance between two adjacent light-transmitting and light-reflecting lenses is L;
then R is 0.5L/sin0.5(Ω - θ - α).
In an alternative embodiment, the first surface has a second total reflection film thereon for preventing light from being reflected into the vehicle.
In an alternative solution, the brake light emitting area has an optical microstructure for guiding light to exit.
In an alternative embodiment, the optical microstructure is a stripe structure, a step structure, or a grating structure.
In one optional technical scheme, the rear windshield comprises privacy glass and light-transmitting glass arranged on the privacy glass;
the light inlet surface is arranged at one end, facing the optical lens, of the light-transmitting glass, and the first surface and the second surface are located on two opposite sides of the light-transmitting glass;
the light emitting area of the brake lamp is arranged on the second surface of the light-transmitting glass.
In an optional technical scheme, a light-blocking layer is arranged between the light-transmitting glass and the privacy glass.
The technical scheme of this application still provides an automobile, includes any one preceding rear windshield subassembly.
By adopting the technical scheme, the method has the following beneficial effects:
the application provides a back windshield subassembly and car, send the light zone integration back windshield with the brake light, the light that the laser instrument sent is after the optical lens reflection, in advancing the light surface refraction entering back windshield, then through back windshield's second surface, first surface reflect in proper order, send the light zone through the brake light at last and jet out, realized high-order brake light function, occupation space is little, and does not have evagination structure, has reduced the windage.
Drawings
FIG. 1 is a schematic structural view of a rear windshield assembly provided in accordance with an embodiment of the present application;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of light passing through a light-transmissive and light-reflective lens;
FIG. 4 is a schematic diagram of an optical microstructure as a step structure;
fig. 5 is a schematic structural view of a rear windshield assembly according to an embodiment of the present application, in which the rear windshield includes privacy glass and light-transmitting glass.
Detailed Description
Embodiments of the present application are further described below with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1 to 2, a rear windshield assembly according to an embodiment of the present application includes a rear windshield 1, a laser 2 for emitting light, and an optical lens 3 for reflecting the light emitted from the laser 2 to the rear windshield 1.
The laser 2 and the optical lens 3 are respectively located outside the rear windshield 1.
The rear windshield 1 has a first surface 13 and a second surface 14 which are oppositely arranged and can reflect light, and the second surface 14 is provided with a brake lamp light emitting area 10.
The end of the rear windscreen 1 facing the optical lens 3 has a light inlet surface 15.
The included angle between the light inlet surface 15 and the second surface 14 is an acute angle, and the included angle between the light inlet surface 15 and the first surface 13 is an obtuse angle.
The light emitted by the laser 2 can be reflected to the light entrance surface 15 through the optical lens 3, refracted through the light entrance surface 15, enter the rear windshield 1, and then reflected sequentially through the second surface 14 and the first surface 13, and finally emitted from the brake lamp light emitting area 10.
The rear windshield subassembly that this application embodiment provided sends out light zone 10 integration with the brake light on rear windshield 1, and occupation space is little, and does not have the evagination structure, has reduced the windage.
The rear windshield assembly provided by the embodiment of the application comprises a rear windshield 1, a laser 2 and an optical lens 3.
The rear windshield 1 is a rear window glass or a rear door glass of an automobile, and can guide light.
The laser 2 is connected with a running computer and a vehicle battery of the vehicle and used for emitting light.
The optical lens 3 is configured to convert the light emitted from the laser 2 into a plurality of parallel light beams and reflect the parallel light beams to the rear windshield 1.
The laser 2 and the optical lens 3 are outside one side edge of the rear windshield 1. In general, the laser 2 and the optical lens 3 may be arranged above the rear windshield 1.
In the body structure of an automobile, if a spoiler is mounted on the top of the rear windshield 1, the laser 2 and the optical lens 3 may be mounted in a cavity of the spoiler. The bottom of the cavity of the spoiler is open for the top insertion of the rear windscreen 1 so that the light reflected by the optical lenses 3 can be conducted to the rear windscreen 1.
In the body structure of an automobile, if the top of the rear windshield 1 is fixed by a structural member (window frame or the like), the laser 2 and the optical lens 3 may be installed in a cavity of the structural member. The bottom of the cavity of the structural member is open for the top insertion of the rear windscreen 1 so that the light reflected by the optical lens 3 can be conducted to the rear windscreen 1.
The rear windshield 1 has a first surface 13 and a second surface 14, the first surface 13 and the second surface 14 being disposed opposite to each other, and both the first surface 13 and the second surface 14 being capable of reflecting light. After the rear windshield 1 is mounted to the vehicle body, the first surface 13 faces the inside of the vehicle and the second surface 14 faces the outside of the vehicle. The stop lamp light emitting area 10 is disposed on the second surface 14, and emits light propagating in the rear windshield 1, thereby realizing a high-mount stop lamp lighting function.
The light intake surface 15 is provided at an end of the rear windshield 1 facing the optical lens 3, typically an upper end or a top end of the rear windshield 1. The brake lamp light emitting area 10 is spaced from the light entering surface 15 by a preset distance.
The light inlet surface 15 is arranged obliquely so that light in the rear windshield 1 can be reflected by the second surface 14 and the first surface 13 in sequence, and finally can be reflected to the brake light emitting region 10.
Specifically, an acute angle is formed between the light entrance surface 15 and the second surface 14, and an obtuse angle is formed between the light entrance surface 15 and the first surface 13.
As shown in fig. 2, the light reflected by the optical lens 3 propagates to the light entrance surface 15, and the light entrance surface 15 refracts the light, so that the light first propagates toward the second surface 14, then propagates to the first surface 13 after being reflected by the second surface 14, and then is reflected by the first surface 13 to the brake light emitting region 10. Of course, the light may be reflected multiple times through the second surface 14 and the first surface 13, as desired. The proximity angle of total reflection of the second surface 14 and the first surface 13 can be obtained through experiments. The second surface 14 and the first surface 13 are both side surfaces of the rear windshield 1, and are made of the same material, and therefore, the total reflection approach angles of the second surface 14 and the first surface 13 are equal. As long as it is ensured that the incident angle of the light traveling toward the second surface 14 after being refracted through the light entrance surface 15 is larger than the total reflection approach angle of the second surface 14, the light is ensured to be reflected in sequence between the second surface 14 and the first surface 13.
Under the premise that the above-mentioned precondition is satisfied, the light propagation path can be changed by changing the inclination angle of the light inlet surface 15, that is, the included angle between the light inlet surface 15 and the second surface 14 and the first surface 13, and finally, the light reflected from the first surface 13 can be emitted from the brake light emitting region 10.
When the above-mentioned precondition is satisfied, the distance between the stop lamp light emitting region 10 and the light entrance surface 15 may be changed, so that the light reflected from the first surface 13 can be emitted from the stop lamp light emitting region 10.
According to the requirement, a red light-transmitting film can be coated on the light-emitting area 10 of the brake lamp, and red light can be transmitted when the light-emitting area 10 of the brake lamp is lightened.
From this, the rear windshield subassembly that this application provided, send the light zone 10 integration in rear windshield 1 with the brake light, the light that laser instrument 2 sent is through 3 reflections of optical lens after, in entering rear windshield 1 through advancing the 15 refractions of light face, then through rear windshield 1's second surface 14, first surface 13 reflect in proper order, send light zone 10 through the brake light at last and jet out, realized high-order brake light function, occupation space is little, and does not have the evagination structure, has reduced the windage.
In one embodiment, as shown in fig. 1, the brake light emitting region 10 extends along the width direction of the rear windshield 1.
The optical lens 3 is located on one side of the laser 2 in the extending direction along the brake lamp light emitting area 10, and the light reflecting surface of the optical lens 3 is inclined toward the laser 2 and forms an acute angle with the light entering surface 15.
That is, the light reflecting surface (light incident surface) of the optical lens 3 faces both the laser 2 and the light incident surface 15, so that the light emitted from the laser 2 can be reflected to the light incident surface 15.
In one embodiment, as shown in fig. 1, a plurality of optical lenses 3 are arranged at intervals on one side of the laser 2.
The optical lens 3 farthest from the laser 2 is a total reflection lens 32, and the optical lenses 3 between the total reflection lens 32 and the laser 2 are all transparent reflective lenses 31 capable of transmitting light and reflecting light.
The light transmittance of the light-transmitting reflective mirror 31 decreases in order in the direction from the laser 2 to the total reflection mirror 32.
In the present embodiment, a plurality of optical lenses 3 are arranged at intervals along the width direction of the rear windshield 1. A plurality of optical lenses 3 are arranged on the same side of the laser 2. Wherein, one optical lens 3 farthest away from the laser 2 is a total reflection lens 32, and the other optical lenses 3 are all transparent reflection lenses 31. The total reflection mirror 32 totally reflects the light to the light entrance surface 15. The light-transmitting/reflecting lens 31 reflects a part of the light to the light-entering surface 15, and the rest of the light is refracted and transmitted through the light-exiting surface.
In order to uniformly transmit light to the elongated light entrance surface 15, the following configuration is adopted:
in the direction from the laser 2 to the total reflection lens 32, the transmittance of the transparent reflection lens 31 gradually decreases, that is, the transparent reflection lens 31 closer to the laser 2 can transmit more light backward to reflect enough light to the transparent reflection lens 31 behind; the transmitting/reflecting mirror 31 closer to the total reflecting mirror 32 transmits less light but reflects most of the light to ensure that the light incident surface 15 is relatively uniform along the width direction of the rear windshield 1, thereby ensuring uniform lighting of the brake light emitting region 10.
The light transmittance of each light-transmitting and light-reflecting lens 31 can be set according to actual needs.
In one embodiment, each of the light transmissive/reflective lenses 31 has a light transmissive film on the light incident surface 311 and the light emitting surface 312, and the total reflective lens 32 has a first total reflective film on the light incident surface 311.
The thickness of the light transmitting film of the light transmitting reflective mirror 31 is sequentially increased in a direction from the laser 2 to the total reflection mirror 32.
The transmittance of the light-transmissive/reflective lens 31 can be controlled by using a light-transmissive film. The light-transmitting film is a semi-permeable film. The thicker the light-transmitting film is, the less light is transmitted and the more light is reflected by the light-transmitting mirror 31. The thinner the light-transmitting film is, the more light is transmitted, and the less light is reflected by the light-transmitting mirror 31. The thickness of the light transmissive film of the light transmissive mirror 31 becomes thicker in order along the direction from the laser 2 to the total reflection mirror 32, that is, it is realized that the light transmittance of the light transmissive mirror 31 becomes smaller in order along the direction from the laser 2 to the total reflection mirror 32.
The light incident surface 311 of the total reflection lens 32 has a first total reflection film, and the light rays on the light incident surface 311 are all reflected to the light incident surface 15 by the first total reflection film.
The first total reflection film can adopt an aluminum foil plated film or a silver plated film.
In one embodiment, as shown in fig. 1, the length of the light entering surface 15 in the extending direction along the brake light emitting area 10 is greater than or equal to the length of the brake light emitting area 10. The light inlet surface 15 is positioned right above the light emitting area 10 of the brake lamp. The distance between the total reflection lens 32 and the light-transmitting and reflecting lens 31 closest to the laser 2 is greater than or equal to the length of the light inlet surface 15, so as to ensure that the light-emitting area 10 of the brake lamp can be lighted everywhere.
In one embodiment, as shown in fig. 1-3, light entrance surface 15 is curved along the width of rear windshield 1, and light entrance surface 15 has a radius of curvature R.
The cross section of the light-transmitting and light-reflecting lens 31 along the width direction of the rear windshield 1 is an isosceles trapezoid, wherein an included angle between the light incident surface 311 and the light emitting surface 312 of the light-transmitting and light-reflecting lens 31 is α.
The incident angle of the light incident surface 311 of the light transmissive/reflective lens 31 is θ, and the refraction angle of the light exiting surface 312 of the light transmissive/reflective lens 31 is Ω.
The distance between two adjacent light-transmitting and light-reflecting lenses 31 is L.
Then R is 0.5L/sin0.5(Ω - θ - α).
The refraction angle of the light incident surface 311 is b, and the incident angle of the light emitting surface 312 is c.
K is sin θ/sinb is sin Ω/sinc, where Ω - θ > α, so that the light refracted from the light emitting surface 312 is bent toward the light entering surface 15.
The total deflection angle of the two adjacent light-transmitting and reflecting lenses 31 to the light beam is equal to the fan-shaped included angle of the light entrance surface 15 with the chord length L, and then 0.5L/R is sin0.5(Ω - θ - α), so that the functional relationship between R and L is 0.5L/sin0.5(Ω - θ - α).
According to the above formula, the remaining parameters can be calculated under the condition that known 4 parameters are obtained.
In one embodiment, as shown in fig. 2, the first surface 13 has a second total reflection film 16 thereon for preventing light from being reflected toward the inside of the vehicle.
The second total reflection film 16 may be adhered or plated on the first surface 13 for preventing light from being reflected toward the inside of the vehicle, and the driver and the passenger in the vehicle may not see the light in the vehicle.
The second total reflection film 16 may be an aluminum-plated film or a silver-plated film.
In one embodiment, the brake light emitting region 10 has optical microstructures for directing light out for transmitting light from the brake light emitting region 10 back into the vehicle.
In one embodiment, as shown in fig. 2 and 4, the optical microstructure is a stripe structure 101, a step structure 102, or a grating structure. The stripe structure 101, the step structure 102 or the grating structure can be directly formed on the second surface 14 by etching, polishing, etc. The stripe structure 101, the step structure 102, or the grating structure may cause light to propagate toward a certain direction.
In one of the embodiments, as shown in fig. 5, the rear windshield 1 includes a privacy glass 11 and a light-transmitting glass 12 provided on the privacy glass 11.
The light inlet surface 15 is disposed at an end of the translucent glass 12 facing the optical lens 3, and the first surface 13 and the second surface 14 are on opposite sides of the translucent glass 12.
The stop lamp light emitting region 10 is disposed on the second surface 14 of the light transmissive glass 12.
In this embodiment, the rear windshield 1 is made of privacy glass 11, and a light-transmitting glass 12 is bonded to the privacy glass 11. The light entrance surface 15, the first surface 13 and the second surface 14 are all part of the light-transmitting glass 12. The light-transmitting glass 12 and the privacy glass 11 are sealed through glue, and the water leakage prevention effect is achieved.
In one embodiment, as shown in fig. 5, a light-shielding layer 17 is disposed between the light-transmitting glass 12 and the privacy glass 11. The light-blocking layer 17 may be a spacer powder, for example, a silicon dioxide powder. The isolation powder is filled in the gap between the light-transmitting glass 12 and the privacy glass 11, and plays a role in preventing light from entering the privacy glass 11.
An embodiment of the present application further provides an automobile comprising a rear windshield assembly as described in any of the previous embodiments.
As described above, in the vehicle body structure of the automobile, if the spoiler is mounted on the top of the rear windshield 1, the laser 2 and the optical lens 3 may be mounted in the cavity of the spoiler. The bottom of the cavity of the spoiler is open for the top insertion of the rear windscreen 1 so that the light reflected by the optical lenses 3 can be conducted to the rear windscreen 1.
In the body structure of an automobile, if the top of the rear windshield 1 is fixed by a structural member (window frame or the like), the laser 2 and the optical lens 3 may be installed in a cavity of the structural member. The bottom of the cavity of the structural member is open for the top insertion of the rear windscreen 1 so that the light reflected by the optical lens 3 can be conducted to the rear windscreen 1.
The laser 2 is connected with a traveling crane computer through a wire, and the laser 2 is also connected with an automobile battery through a wire. When the driver depresses the brake pedal, the laser 2 emits light. When the driver releases the brake pedal, the laser 2 stops emitting light.
To sum up, the rear windshield subassembly and car that this application provided send the brake light and send out light zone 10 integration in rear windshield 1, the light that laser instrument 2 sent is through 3 reflection backs of optical lens, through advance in light face 15 refraction gets into rear windshield 1, then through rear windshield 1's second surface 14, first surface 13 reflect in proper order, send out light zone 10 through the brake light at last and jet out, realized high-order brake light function, occupation space is little, and does not have evagination structure, has reduced the windage.
According to the needs, the above technical schemes can be combined to achieve the best technical effect.
What has been described above is merely the principles and preferred embodiments of the present application. It should be noted that, for a person skilled in the art, several other modifications can be made on the basis of the principle of the present application, and these should also be considered as the scope of protection of the present application.

Claims (11)

1. A rear windscreen assembly comprising a rear windscreen, a laser for emitting light and optical optics for reflecting light emitted by the laser towards the rear windscreen;
the laser and the optical lens are respectively positioned on the outer side of the rear windshield;
the rear windshield is provided with a first surface and a second surface which are oppositely arranged and can reflect light, and a brake lamp light emitting area is arranged on the second surface;
one end of the rear windshield, facing the optical lens, is provided with a light inlet surface;
an included angle between the light inlet surface and the second surface is an acute angle, and an included angle between the light inlet surface and the first surface is an obtuse angle;
the light emitted by the laser can be reflected to the light inlet surface through the optical lens, is refracted by the light inlet surface, enters the rear windshield, is reflected by the second surface and the first surface in sequence, and is finally emitted from the light emitting area of the brake lamp.
2. The rear windshield assembly of claim 1, wherein the brake light emitting region extends along a width of the rear windshield;
in the extending direction along the light emitting area of the stop lamp, the optical lens is positioned on one side of the laser, and the light reflecting surface of the optical lens inclines towards the laser side and forms an acute angle with the light inlet surface.
3. A rear windscreen assembly according to claim 2 wherein a plurality of said optical lenses are spaced apart on one side of said laser;
the optical lens which is farthest away from the laser is a total reflection lens, and the optical lenses which are positioned between the total reflection lens and the laser are light-transmitting and light-reflecting lenses which can transmit light and reflect light;
the light transmittance of the light-transmitting reflective mirror is sequentially reduced in a direction from the laser to the total reflection mirror.
4. The rear windshield assembly of claim 3, wherein each of the light transmissive and reflective lenses has a light transmissive film on both the light incident surface and the light exit surface, and the total reflective lens has a first total reflective film on the light incident surface;
the thickness of the light transmission film of the light transmission reflection lens is sequentially thickened along the direction from the laser to the total reflection lens.
5. The rear windshield assembly of claim 3, wherein the light inlet surface is arcuate in shape along a width of the rear windshield, the light inlet surface having a radius of curvature R;
the section of the light-transmitting and light-reflecting lens along the width direction of the rear windshield is in an isosceles trapezoid shape, wherein an included angle between a light incident surface and a light emergent surface of the light-transmitting and light-reflecting lens is alpha;
the incident angle of the light incident surface of the light-transmitting and light-reflecting lens is theta, and the refraction angle of the light emergent surface of the light-transmitting and light-reflecting lens is omega;
the distance between two adjacent light-transmitting and light-reflecting lenses is L;
then R is 0.5L/sin0.5(Ω - θ - α).
6. Rear windscreen assembly according to any of the preceding claims 1 through 5,
the first surface has a second total reflection film thereon for preventing reflection of light into the vehicle.
7. Rear windscreen assembly according to any of the preceding claims 1 through 5,
the light emitting area of the stop lamp is provided with an optical microstructure for guiding light to emit.
8. The rear windshield assembly of claim 7, wherein the optical microstructures are stripe structures, step structures, or grid structures.
9. Rear windscreen assembly according to any of the preceding claims 1 through 5,
the rear windshield comprises privacy glass and light-transmitting glass arranged on the privacy glass;
the light inlet surface is arranged at one end, facing the optical lens, of the light-transmitting glass, and the first surface and the second surface are located on two opposite sides of the light-transmitting glass;
the light emitting area of the brake lamp is arranged on the second surface of the light-transmitting glass.
10. A rear windscreen assembly according to claim 9 wherein a light barrier layer is provided between the light transmitting glass and the privacy glass.
11. An automobile, characterized by comprising a rear windscreen assembly according to any one of claims 1-10.
CN202110737677.3A 2021-06-30 2021-06-30 Rear windshield subassembly and car Pending CN113370760A (en)

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CN114435091A (en) * 2022-02-14 2022-05-06 浙江吉利控股集团有限公司 Back door assembly and vehicle

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CN207758661U (en) * 2017-10-25 2018-08-24 刘拮畅 A kind of novel rear seat windscreen brake lamp
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CN210891455U (en) * 2019-10-31 2020-06-30 上海康耐司信号设备有限公司 Be applied to luminous even high-order stop lamp on car
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CN213542189U (en) * 2020-09-11 2021-06-25 昕诺飞控股有限公司 Optical prism plate, LED panel lamp and LED down lamp

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Publication number Priority date Publication date Assignee Title
JP2003034560A (en) * 2001-07-19 2003-02-07 Nippon Sheet Glass Co Ltd Laminated glass and transmitting/receiving devise using the same
CN102033413A (en) * 2009-09-25 2011-04-27 李志扬 Three-dimensional display device based on random constructive interference principle
CN209191783U (en) * 2017-07-25 2019-08-02 福特全球技术公司 Illuminate window assembly for vehicle
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CN210891455U (en) * 2019-10-31 2020-06-30 上海康耐司信号设备有限公司 Be applied to luminous even high-order stop lamp on car
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Publication number Priority date Publication date Assignee Title
CN114435091A (en) * 2022-02-14 2022-05-06 浙江吉利控股集团有限公司 Back door assembly and vehicle
CN114435091B (en) * 2022-02-14 2024-05-31 浙江吉利控股集团有限公司 Back door assembly and vehicle

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