WO2022110760A1 - 远光光学元件、远光照明单元、车灯和车辆 - Google Patents

远光光学元件、远光照明单元、车灯和车辆 Download PDF

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Publication number
WO2022110760A1
WO2022110760A1 PCT/CN2021/099311 CN2021099311W WO2022110760A1 WO 2022110760 A1 WO2022110760 A1 WO 2022110760A1 CN 2021099311 W CN2021099311 W CN 2021099311W WO 2022110760 A1 WO2022110760 A1 WO 2022110760A1
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WIPO (PCT)
Prior art keywords
light
auxiliary
lighting
incident
optical element
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PCT/CN2021/099311
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English (en)
French (fr)
Inventor
刘方
仇智平
李辉
祝贺
桑文慧
Original Assignee
华域视觉科技(上海)有限公司
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Publication of WO2022110760A1 publication Critical patent/WO2022110760A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • 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
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • 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

Definitions

  • the present invention relates to a vehicle lamp, in particular to a high beam optical element. Furthermore, the present invention also relates to a high beam lighting unit, a vehicle lamp and a vehicle comprising the high beam optical element.
  • Multiple lighting units may be composed of one or more low beam lighting units and one or more far and near beam integrated lighting units, or may be composed of multiple far and near beam integrated lighting units, or one or more low beam lighting units.
  • the unit is composed of one or more high-beam lighting units, or it is composed of one or more integrated high-beam lighting units and one or more high-beam lighting units.
  • the above-mentioned low-beam lighting unit refers to the lighting unit that projects all or part of the light shape of the low beam
  • the above-mentioned high-beam lighting unit refers to the lighting unit that projects all or part of the light shape of the high beam
  • the above-mentioned integrated lighting unit of the far and near beams refers to both projection.
  • a new type of headlight optical element needs to be designed to solve the defect that the high-beam lighting unit cannot be lit in the low-beam lighting mode.
  • the problem to be solved by the first aspect of the present invention is to provide a high beam optical element, which can achieve a lighting effect in a low beam illumination mode and has a simple structure.
  • the problem to be solved by the second aspect of the present invention is to provide a high-beam lighting unit, which can achieve a lighting effect in a low-beam lighting mode and has a simple structure.
  • the problem to be solved by the third aspect of the present invention is to provide a vehicle lamp, which can realize the lighting effect of the high beam lighting unit in the low beam lighting mode.
  • the problem to be solved by the fourth aspect of the present invention is to provide a vehicle, the vehicle lamp of which can realize the lighting effect of the high beam lighting unit in the low beam lighting mode.
  • a first aspect of the present invention provides a high beam optical element, which includes a light incident portion, a light guide portion and a light exit portion sequentially arranged from back to front, the light incident portion includes a high beam incident portion and a light exit portion.
  • the light guiding part comprises a high beam light guiding part corresponding to the high beam incident part and an auxiliary lighting light guiding part corresponding to the auxiliary lighting incident part
  • the high beam light guide part is integrally connected with the high beam light entrance part, the auxiliary lighting light guide part and the auxiliary lighting entrance part are arranged independently, and the front end surface of the auxiliary lighting light entrance part is formed as an auxiliary light beam a light exit surface, the rear end surface of the auxiliary lighting light guide part is formed as an auxiliary light incident surface; the light received by the auxiliary lighting light entry part exits to the auxiliary light entrance surface through the auxiliary light exit surface, The light is then transmitted to the light-exiting part through the auxiliary lighting guide part, and after total reflection in the light-exiting part, diffuse reflection is formed, and the diffusely reflected light is emitted from the light-exiting surface of the light-exiting part to form auxiliary lighting light.
  • the auxiliary lighting and light-incident portion is located below the high-beam light-incident portion, and the auxiliary lighting and light-guiding portion is located below the high-beam light-guiding portion.
  • the auxiliary light exit surface is set as a forward convex curved surface
  • the auxiliary light incident surface and the light entrance surface of the auxiliary lighting light entrance portion are respectively set as backward convex curved surfaces.
  • an opaque casing is provided or integrally formed on the outer surface of the light guide portion.
  • the light emitting surface of the light emitting part is formed as a single curved surface that protrudes outward; or the light emitting surface of the light emitting part is set as a front convex surface formed by splicing several planes or curved surfaces distributed in a grid shape.
  • the high beam incident portion is provided with at least one incident light structure, the rear end surface of each light incident structure is respectively set as a curved surface or a tapered surface that protrudes backwards, and the incident light structure is in a matrix form.
  • the light incident structures are arranged in at least one row.
  • the high beam light guide portion, the auxiliary lighting light guide portion and the light exit portion are integrally formed.
  • a second aspect of the present invention provides a high-beam lighting unit, comprising the high-beam optical element described in any one of the above, a circuit board, a high-beam light source corresponding to the high-beam incident portion, and the auxiliary lighting
  • the auxiliary lighting source and the heat sink connected to the circuit board are correspondingly arranged in the light incident part, and the high beam light source and the auxiliary lighting source are arranged on the circuit board.
  • a third aspect of the present invention provides a vehicle lamp, comprising the above-mentioned high beam lighting unit.
  • a fourth aspect of the present invention provides a vehicle, comprising the above-mentioned vehicle lamp.
  • the high beam optical element of the present invention is provided with an auxiliary lighting incident portion on one side of the high beam light incident portion, and correspondingly, an auxiliary lighting light guide portion is provided on one side of the high beam light guide portion,
  • the auxiliary lighting light entrance part the auxiliary lighting light guide part and the light exit part
  • the light received by the auxiliary lighting light entrance part can be refracted to the auxiliary light entrance surface through the auxiliary light exit surface, and then enter the light through the auxiliary light.
  • the surface is refracted to the auxiliary lighting guide part, and transmitted to the light exit part through the auxiliary lighting guide part, and is totally reflected in the light exit part for many times.
  • the light-emitting surface of the optical element is emitted to form auxiliary lighting light, so that the light-emitting surface of the light-emitting part can be lit in the low-beam lighting mode; when the high-beam optical element is applied to the high-beam lighting unit, it can form a visual effect of lighting the light-emitting surface.
  • the overall outline of the lamp can also be presented, thereby improving the appearance and aesthetics of the lamp.
  • FIG. 1 is one of the structural schematic diagrams of a specific embodiment of a high beam optical element in the present invention.
  • Fig. 2 is the second structural schematic diagram of a specific embodiment of the high beam optical element in the present invention.
  • Fig. 3 is the light path diagram of the light incident of auxiliary lighting light incident part in the present invention.
  • FIG. 4 is a schematic structural diagram of a specific embodiment of a high-beam optical element and an opaque housing in the present invention
  • Fig. 5 is the structural representation of the high beam optical element in Fig. 4;
  • FIG. 6 is a schematic structural diagram of the opaque casing in FIG. 4 .
  • FIG. 7 is a schematic structural diagram of a specific embodiment of a high beam lighting unit in the present invention.
  • Figure 8 is an exploded view of the high beam lighting unit shown in Figure 7;
  • Figure 9 is a top view of the high beam lighting unit shown in Figure 7;
  • FIG. 10 is a cross-sectional view taken along line A-A in FIG. 9 .
  • High beam light guide 22 Auxiliary lighting light guide
  • orientation words such as “front”, “rear”, “left”, “right”, “Up”, “down”, etc. are the meanings that are derived by analogy with the orientation of the light transmission direction.
  • the end of the high-beam optical element that is close to the high-beam light source 6 is the rear, and the end is far away from the high-beam optical element.
  • One end of the high-beam light source 6 is the front; it can also be understood that the end where the light-incident part 1 of the high-beam optical element is located is the rear, and the end where the light-emitting part 3 is located is the front, and relative to the front-rear direction of the high-beam optical element, the far
  • the direction represented by the left and right sides of the light optical element is the left and right direction
  • the direction represented by the upper and lower sides of the high beam optical element is the up and down direction.
  • the terms “installation” and “connection” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It is an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between the two elements.
  • installation and “connection” should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It is an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between the two elements.
  • the present invention provides a high beam optical element, referring to FIG. 1 to FIG. 3 , comprising a light incident part 1 , a light guide part 2 and a light exit part 3 arranged in sequence from the back to the front, and the light incident part 1 includes a high beam incident part 11 and the auxiliary lighting incident portion 12, the light guide portion 2 includes a high beam light guiding portion 21 corresponding to the high beam incident portion 11 and an auxiliary lighting light guiding portion 22 corresponding to the auxiliary lighting incident portion 12.
  • the light guide portion 21 is integrally connected with the high beam incident portion 11, the auxiliary light guide portion 22 and the auxiliary light incident portion 12 are arranged independently, and the front end surface of the auxiliary light incident portion 12 is formed as the auxiliary light exit surface 13,
  • the rear end surface of the auxiliary light guide portion 22 is formed as an auxiliary light incident surface 23; the light received by the auxiliary light incident portion 12 exits through the auxiliary light exit surface 13 to the auxiliary light incident surface 23, and then passes through the auxiliary light guide.
  • the light portion 22 is transmitted to the light-emitting portion 3 , and is totally reflected in the light-emitting portion 3 to form diffuse reflection.
  • the diffusely reflected light is emitted from the light-emitting surface of the light-emitting portion 3 to form auxiliary lighting light.
  • the auxiliary lighting guide portion 22 and the auxiliary lighting incident portion 12 are provided independently, so that the light received by the auxiliary lighting incident portion 12 can be refracted twice through the auxiliary light exit surface 13 and the auxiliary light entrance surface 23
  • the increase of the light distribution surface during the light transmission process is more conducive to adjusting the transmission direction of the light, so that it can be fully reflected as much as possible after it is transmitted to the light exit part 3, which further increases the formed
  • the diffusely reflected light is increased, and the auxiliary lighting light emitted by the light-emitting part 3 is increased.
  • the high beam light source 6 corresponding to the light part 11 and the auxiliary lighting light source 7 corresponding to the auxiliary lighting incident part 12 are provided.
  • the working process of the high beam lighting unit is as follows: referring to FIG.
  • the auxiliary lighting light source 7 in the low beam lighting mode, the auxiliary lighting light source 7 is turned on, and the light emitted by the auxiliary lighting light source 7 enters from the light incident surface of the auxiliary lighting light incident part 12 and enters into The auxiliary light exits from the light exit surface 13, and then enters the auxiliary lighting light guide portion 22 from the auxiliary light incident surface 23, and is transmitted to the light exit portion 3 through the auxiliary lighting light guide portion 22, and is totally reflected in the light exit portion 3. Multiple total reflections can occur on the light-emitting surface and side surface of the light-emitting part 3. During the process of multiple total reflections, the light is diffusely reflected due to impurities in the high-beam optical element, and the diffusely reflected light is emitted by the light.
  • the light-emitting surface of the part 3 is refracted out to form auxiliary lighting light, and the auxiliary lighting light is injected into the human eye, so that when people look in front of the headlight, the high-beam lighting unit also emits light.
  • the light illumination unit is also lit; in the high beam mode, the high beam light source 6 is turned on, and the light emitted by the high beam light source 6 enters from the light incident surface of the high beam light entrance part 11 and is transmitted to the light exit part through the high beam light guide part 21 3. Finally, the light is emitted through the light-emitting surface of the light-emitting part 3 to form a high beam illumination light.
  • the high beam light source 6 is in an off state
  • the auxiliary lighting light source 7 may be on or off, preferably the auxiliary lighting light source 7 is off. state, which can reduce the power consumption of the lights.
  • the auxiliary lighting incident portion 12 can be located in any orientation of the upper, lower, left and right sides of the high beam incident portion 11, and specifically, the structural forms of the two can be determined according to actual production and use requirements. .
  • the auxiliary lighting incident portion 12 is located below the high beam light incident portion 11, and the auxiliary lighting light guiding portion 22 is located below the high beam light guiding portion 21, which is beneficial to the structural design of the high beam optical element. When using the headlights, reduce or avoid the impact on the low beam lighting.
  • the auxiliary light exit surface 13 , the auxiliary light incident surface 23 and the auxiliary lighting entry portion 12 can be respectively arranged as planes, with simple structure and good manufacturability.
  • the light incident surface of the auxiliary lighting light incident part 12 can also be a curved surface that protrudes backwards, or other structures that can condense light, so that the light emitted by the auxiliary lighting light source 7 can be more assisted by the auxiliary lighting.
  • the light incident surface of the lighting incident portion 12 enters the auxiliary lighting incident portion 12 , thereby improving the light utilization rate of the auxiliary lighting light source 7 .
  • the auxiliary light exit surface 13 is set as a forward convex curved surface
  • the auxiliary light incident surface 23 is also set as a backward convex curved surface.
  • the light entering the auxiliary lighting light guide part 22 can be more totally reflected in the light emitting part 3 , and the lighting effect of the light emitting part 3 is improved.
  • an opaque casing 4 is provided or integrally formed on the outer surface of the light guide portion 2 .
  • the opaque casing 4 and the light guide part 2 can be integrally formed by two-color injection molding, or can be integrally formed by insert injection molding, or other molding methods can be used, as long as the opaque casing 4 can be formed on the edge of the light guide part 2 . Outside, all belong to the protection scope of the present invention.
  • the opaque casing 4 will not cover the auxiliary light incident surface 23 to avoid affecting the light entering the auxiliary lighting light guide portion 22 .
  • the side surface or the light exit surface of the light exit part 3 is reflected to the side surface of the light guide part 2 , it can be absorbed by the opaque casing 4 to prevent the light emitted by the high beam light source 6 and the auxiliary lighting light source 7 from passing from the light exit surface of the light exit part 3
  • the stray light is formed outside the area, which affects the light output effect.
  • the light-emitting surface of the light-emitting portion 3 is formed as a single curved surface that protrudes outward; or the light-emitting surface of the light-emitting portion 3 is formed by splicing several planes or curved surfaces distributed in a grid shape. Front convex.
  • the light-emitting surface of the light-emitting portion 3 is set as a front convex surface formed by splicing several planes or curved surfaces distributed in a grid shape, so that the emitted light is diffused by a certain angle. On the one hand, it can also make the light distribution uniform, and in addition, it can facilitate dimming. Exemplarily, referring to FIG.
  • the mesh surface at the lower portion of the light-emitting surface of the light-emitting portion 3 can be adjusted by adjusting the grid surface of the light-emitting portion 3 .
  • the high-beam light incident portion 11 includes at least one light incident structure 14 , and the rear end surface of each light incident structure 14 is respectively set as a curved surface or a cone that protrudes backwards.
  • the light incident structures 14 are arranged in a matrix, and the light incident structures 14 are arranged in at least one row.
  • the rear end surfaces of the light incident structures 14 are respectively set as curved surfaces or tapered surfaces that protrude backwards, which can condense the incident light.
  • the structures 14 are arranged to be connected sequentially or at intervals.
  • the high beam light guide portion 21, the auxiliary lighting light guide portion 22 and the light exit portion 3 are integrally formed to ensure the relative positional accuracy between the three. or PC.
  • the light incident portion 1 , the light guide portion 2 and the light exit portion 3 can be formed into one piece.
  • the light incident portion 1 includes a high light incident portion 11 and an auxiliary lighting incident portion 12 , and the light guide portion 2 is divided into far light incident portions.
  • a gap is set between the auxiliary lighting light guide portion 22 and the auxiliary lighting incident portion 12, and the end face of the auxiliary lighting incident portion 12 toward the gap is formed as auxiliary light
  • the light exit surface 13 and the end surface of the auxiliary lighting light guide portion 22 facing the gap are formed as the auxiliary light incident surface 23 , thereby simplifying the installation structure and installation process, improving the installation accuracy and reducing the manufacturing cost.
  • the second aspect of the present invention also provides a high beam lighting unit, see FIG. 7 to FIG. 10 , comprising the high beam optical element described in any one of the above technical solutions, the circuit board 5 , and the high beam incident portion 11 corresponding to the setting
  • the high beam light source 6 and the auxiliary lighting light source 7 corresponding to the auxiliary lighting incident part 12 are arranged on the circuit board 5 .
  • the high-beam lighting unit is further provided with structures such as a heat sink 8 and a heat-dissipating bracket for providing support and heat-dissipating functions to the circuit board 5 and the high-beam optical element.
  • structures such as a heat sink 8 and a heat-dissipating bracket for providing support and heat-dissipating functions to the circuit board 5 and the high-beam optical element.
  • the high-beam lighting unit in the present invention includes a high-beam optical element, a circuit board 5, a light source located on the circuit board 5, and a heat sink 8 connected to the circuit board 5.
  • the high-beam optical element includes a rear
  • the light incident part 1, the light guide part 2 and the light exit part 3 are arranged in sequence forward and integrally formed.
  • the light incident part 1 includes a high beam incident part 11 and an auxiliary light incident part 12 arranged up and down.
  • the upper part and the lower part are divided into the area of the high beam light guide part 21 and the auxiliary lighting light guide part 22 , the high beam light guide part 21 and the high beam incident part 11 are correspondingly arranged and integrally connected, and the auxiliary lighting light guide part 22 and the auxiliary lighting part 11 are connected together.
  • the light incident portions 12 correspond to each other and a gap is set between them.
  • the end face of the auxiliary lighting incident portion 12 facing the gap is formed as the auxiliary light exit surface 13
  • the end face of the auxiliary lighting light guide portion 22 facing the gap is formed as the auxiliary light incident surface.
  • the light incident surface and the auxiliary light incident surface 23 of the auxiliary light incident portion 12 are respectively set as curved surfaces that protrude backward, the auxiliary light exit surface 13 is set to be a curved curved surface that protrudes forward, and the outer surface of the light guide portion 2
  • the side surface is provided with or integrally formed with an opaque casing 4, the opaque casing 4 is connected with the circuit board 5 and the radiator 8, and the light emitting surface of the light emitting part 3 is set to be formed by splicing several curved surfaces distributed in a grid shape.
  • the front convex surface of the high light incident portion 11 includes a plurality of light incident structures 14, the rear end surface of each light incident structure 14 is respectively set as a curved surface that protrudes backwards, and the light incident structures 14 are arranged in a row;
  • the high beam light source 6 provided corresponding to the light incident portion 11 and the auxiliary lighting light source 7 provided corresponding to the auxiliary lighting incident portion 12 .
  • the high-beam light source 6 in the high-beam mode, the high-beam light source 6 is turned on, and the auxiliary lighting light source 7 is turned off. , and then transmitted to the light-emitting part 3 through the high-beam light guide part 21, and finally exits at a certain diffusion angle through the light-emitting surface of the light-emitting part 3 to form high-beam lighting; in the low-beam lighting mode, turn on the auxiliary lighting light sources 7, The high beam light source 6 is turned off, and the light emitted by the auxiliary lighting light source 7 enters after being collected by the light incident surface of the auxiliary lighting light incident part 12, and is refracted from the auxiliary light exit surface 13 to the auxiliary light entrance surface 23.
  • the light incident surface 23 After the light incident surface 23 is refracted, it enters the auxiliary lighting light guide part 22, and is transmitted to the light exit part 3 by the auxiliary lighting light guide part 22, and performs multiple total reflections in the light exit part 3.
  • the light due to the impurities in the high-beam optical element, the light is diffusely reflected, and the diffusely reflected light is emitted from the light-emitting surface of the light-emitting part 3 more evenly, so as to form an auxiliary lighting light, and the auxiliary lighting light enters the human eye.
  • the high beam lighting unit is also emitting light, so that the high beam lighting unit is also lit in the low beam lighting mode; the opaque housing 4 supports the high beam optical element.
  • it can also prevent the light emitted by the high beam light source 6 and the auxiliary lighting light source 7 from being emitted from areas other than the light emitting surface of the light emitting part 3 to form stray light.
  • a third aspect of the present invention also provides a vehicle lamp, comprising the high beam lighting unit according to the technical solution of the second aspect.
  • a plurality of high beam lighting units are provided, and the plurality of high beam lighting units are integrally arranged or dispersedly arranged in the vehicle lamp.
  • the high beam lighting units are arranged and distributed in the vehicle lamp according to longitudinal, lateral or oblique arrangement.
  • the fourth aspect of the present invention also provides a vehicle, including the vehicle lamp according to the technical solution of the third aspect, and therefore at least the technical solutions of the above-mentioned embodiments of the high beam optical element, the high beam lighting unit and the vehicle lamp. all the beneficial effects.
  • the constitution and operation of the vehicle according to the embodiment of the present invention can be understood and easily realized by those skilled in the art, and thus will not be described in detail.
  • the high beam optical element of the present invention is provided with an auxiliary light incident portion 12 on one side of the high beam light incident portion 11 , and correspondingly, an auxiliary point is provided on one side of the high beam light guide portion 21
  • the bright light guide part 22, through the auxiliary lighting of the light incident part 12, the auxiliary lighting of the light guide part 22 and the light output part 3, enables the light received by the auxiliary lighting light entrance part 12 to be refracted to the auxiliary light through the auxiliary light exit surface 13.
  • the light incident surface 23 is refracted by the auxiliary light incident surface 23 to the auxiliary lighting guide portion 22 , and is transmitted to the light exit portion 3 through the auxiliary lighting light guide portion 22 , and undergoes multiple total reflections in the light exit portion 3 .
  • the reflected light After the reflected light is diffusely reflected by the impurities in the high-beam optical element, it is emitted from the light-emitting surface of the light-emitting part 3 to form auxiliary lighting light, so that the light-emitting surface of the light-emitting part 3 can be lit in the low-beam lighting mode; the high-beam optical
  • the element When the element is applied to the high beam lighting unit, it can form a visual effect of lighting the light-emitting surface, and can also present the overall outline shape of the vehicle lamp in the low beam lighting mode, thereby improving the appearance and appearance of the vehicle lamp.

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  • General Engineering & Computer Science (AREA)
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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种远光光学元件、远光照明单元、车灯和车辆。远光光学元件包括由后向前设置的入光部（1）、导光部（2）和出光部（3），入光部（1）包括远光入光部（11）和辅助点亮入光部（12），导光部（2）包括与远光入光部（11）对应设置的远光导光部（21）和与辅助点亮入光部（12）对应设置的辅助点亮导光部（22），远光导光部（21）与远光入光部（11）一体连接，辅助点亮导光部（22）与辅助点亮入光部（12）独立设置，辅助点亮入光部（12）的前端面形成为辅助光线出光面（13），辅助点亮导光部（22）的后端面形成为辅助光线入光面（23）；辅助点亮入光部（12）接收的光线经由辅助光线出光面（13）出射，再经辅助点亮导光部（22）传输至出光部（3），在出光部（3）内进行全反射后形成漫反射，由出光面出射以形成辅助点亮光线。该远光光学元件能够实现车灯点亮，结构简单。

Description

远光光学元件、远光照明单元、车灯和车辆
相关申请的交叉引用
本申请要求2020年11月27日提交的中国专利申请202022811888.0的权益，该申请的内容通过引用被合并于本文。
技术领域
本发明涉及车灯，具体地，涉及一种远光光学元件。此外，本发明还涉及一种包括所述远光光学元件的远光照明单元、车灯和车辆。
背景技术
随着车辆技术的发展，越来越多的车辆大灯通过设置多个照明单元来形成近光和远光的照明，同时能够实现车灯造型的多样化。多个照明单元可以是由一个或多个近光照明单元和一个或多个远近光一体照明单元组成，也可以是由多个远近光一体照明单元组成，或者是由一个或多个近光照明单元和一个或多个远光照明单元组成，又或者是由一个或多个远近光一体照明单元和一个或多个远光照明单元组成。上述近光照明单元是指投射出近光全部或部分光形的照明单元，上述远光照明单元是指投射出远光全部或部分光形的照明单元，上述远近光一体照明单元是指既投射出近光全部或部分光形，也投射出远光全部或部分光形的照明单元，上述部分光形是指近光或远光的光形是由多个照明单元投射的光形共同拼接或叠加而成，其中每个照明单元只投射出近光或远光的部分光形。
当多个照明单元由一个或多个近光照明单元和一个或多个远近光一体照明单元组成，或者由多个远近光一体照明单元组成时，在近光照明模式下，所有照明单元都会发光；但是当多个照明单元在由一个或多个近光照明单元和一个或多个远光照明单元组成，或者是由一个或多个远近光一体照明单元和一个或多个远光照明单元组成时，近光照明模式下，远光照明单元是不亮的，这时，不是所有照明单元都被点亮，这就没有发挥出多个照明单元的造型优势。因此现有技术中，不具有投射近光光形或近光部分光形的照明单元无法实现在近光照明模式下该照明单元也是发光的功能。
基于人们对车灯造型美观度的要求，需要设计一种新型的车灯光学元件，以解决在近光照明模式下远光照明单元不能被点亮的缺陷。
发明内容
本发明第一方面所要解决的问题是提供一种远光光学元件，该远光光学元件能够在近光照明模式下实现点亮效果，且结构简单。
此外，本发明第二方面要解决的问题是提供一种远光照明单元，该远光照明单元能够在近光照明模式下实现点亮效果，且结构简单。
进一步地，本发明第三方面要解决的问题是提供一种车灯，该车灯能够在近光照明模式下实现远光照明单元的点亮效果。
更进一步地，本发明第四方面要解决的问题是提供一种车辆，该车辆的车灯能够在近光照明模式下实现远光照明单元的点亮效果。
为了解决上述技术问题，本发明第一方面提供一种远光光学元件，包括由后向前依次设置的入光部、导光部和出光部，所述入光部包括远光入光部和辅助点亮入光部，所述导光部包括与所述远光入光部对应设置的远光导光部和与所述辅助点亮入光部对应设置的辅助点亮导光部，所述远光导光部与所述远光入光部一体连接，所述辅助点亮导光部与所述辅助点亮入光部独立设置，所述辅助点亮入光部的前端面形成为辅助光线出光面，所述辅助点亮导光部的后端面形成为辅助光线入光面；所述辅助点亮入光部接收的光线经由所述辅助光线出光面出射至所述辅助光线入光面，再经所述辅助点亮导光部传输至所述出光部，在所述出光部内进行全反射后形成漫反射，所述漫反射的光线由所述出光部的出光面出射以形成辅助点亮光线。
作为一种优选方式，所述辅助点亮入光部位于所述远光入光部的下方，所述辅助点亮导光部位于所述远光导光部的下方。
优选地，所述辅助光线出光面设置为向前凸出的曲面，所述辅助光线入光面和所述辅助点亮入光部的入光面分别设置为向后凸出的曲面。
更优选地，所述导光部的外侧面上设置有或一体形成有不透光壳体。
作为一种优选方式，所述出光部的出光面形成为向外凸出的单个曲面；或者所述出光部的出光面设置为由呈网格状分布的若干平面或曲面拼接形成的前凸面。
优选地，所述远光入光部设置有至少一个入光结构，每个所述入光结构的后端面分别设置为向后凸出的曲面或锥形面，所述入光结构呈矩阵式排列，所述入光结构设置为至少一排。
更优选地，所述远光导光部、所述辅助点亮导光部和所述出光部一体成型。
本发明第二方面提供一种远光照明单元，包括上述任意一项所述的远光光学元件、线路板、与所述远光入光部对应设置的远光光源、与所述辅助点亮入光部对应设置的辅助点亮光源和与所述线路板连接的散热器，所述远光光源和所述辅助点亮光源设置在所述线路板上。
本发明第三方面提供一种车灯，包括上述的远光照明单元。
本发明第四方面提供一种车辆，包括上述的车灯。
通过上述技术方案，本发明的远光光学元件在远光入光部的一侧设置有辅助点亮入光部，相应地，在远光导光部的一侧设置有辅助点亮导光部，通过辅助点亮入光部、辅助点亮导光部与出光部的配合，使得辅助点亮入光部接收的光线能够经由辅助光线出光面折射至辅助光线入光面，再经辅助光线入光面折射至辅助点亮导光部，经辅助点亮导光部传输至出光部并在出光部内进行多次全反射，全反射的光线经远光光学元件中的杂质漫反射后，由出光部的出光面出射形成辅助点亮光线，从而能够在近光照明模式下点亮出光部的出光面；该远光光学元件应用于远光照明单元时，能够形成出光面点亮的视觉效果，在近光照明模式下也能呈现车灯整体的轮廓造型，从而提升车灯的外观造型美观性。
有关本发明的其他优点以及优选实施方式的技术效果，将在下文的具体实施方式中进一步说明。
附图说明
图1是本发明中远光光学元件的一种具体实施例的结构示意图之一；
图2是本发明中远光光学元件的一种具体实施例的结构示意图之二；
图3是本发明中辅助点亮入光部入射的光线的光路图；
图4是本发明中远光光学元件和不透光壳体的一种具体实施例的结构示意图；
图5是图4中远光光学元件的结构示意图；
图6是图4中不透光壳体的结构示意图。
图7是本发明中远光照明单元的一种具体实施例的结构示意图；
图8是图7所示的远光照明单元的爆炸图；
图9是图7所示的远光照明单元的俯视图；
图10是图9中的A-A剖面图。
附图标记说明
1入光部                         11远光入光部
12辅助点亮入光部                13辅助光线出光面
14入光结构                      2导光部
21远光导光部                    22辅助点亮导光部
23辅助光线入光面                3出光部
4不透光壳体                     5线路板
6远光光源                       7辅助点亮光源
8散热器
具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，本发明的保护范围并不局限于下述的具体实施方式。
在本发明的描述中，需要解释的是，在下文的描述中为清楚地说明本发明的技术方案而涉及的一些方位词，例如“前”、“后”、“左”、“右”、“上”、“下”等均是按照光传输方向所指的方位类推所具有的含义，例如，以远光光学元件为例，远光光学元件上靠近远光光源6的一端为后，远离远光光源6的一端则为前；也可以理解为远光光学元件的入光部1所在的一端为后，出光部3所在的一端为前，而相对于远光光学元件的前后方向，远光光学元件的左右两侧所代表的方向即为左右方向，远光光学元件的上下两侧所代表的方向即为上下方向。
在本发明的描述中，还需要说明的是，除非另有明确的规定和限定，术语“安装”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或者是一体连接；可以是直接连接，也可以是通过中间媒介间接连接，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
本发明提供一种远光光学元件，参见图1至图3，包括由后向前依次设置的入光部1、导光部2和出光部3，入光部1包括远光入光部11和辅助点亮入光部12，导光部2包括与远光入光部11对应设置的远光导光部21和与辅助点亮入光 部12对应设置的辅助点亮导光部22，远光导光部21与远光入光部11一体连接，辅助点亮导光部22与辅助点亮入光部12独立设置，辅助点亮入光部12的前端面形成为辅助光线出光面13，辅助点亮导光部22的后端面形成为辅助光线入光面23；辅助点亮入光部12接收的光线经由辅助光线出光面13出射至辅助光线入光面23，再经辅助点亮导光部22传输至出光部3，在出光部3内进行全反射后形成漫反射，漫反射的光线由出光部3的出光面出射以形成辅助点亮光线。
本发明中，辅助点亮导光部22与辅助点亮入光部12独立设置，能够使得辅助点亮入光部12接收的光线经由辅助光线出光面13和辅助光线入光面23两次折射后进入辅助点亮导光部22，光线传输过程中配光面的增加，更有利于调节光线的传输方向，使其传输至出光部3后能够尽可能多地发生全反射，进一步增加所形成的漫反射的光线，增加出光部3出射的辅助点亮光线。
为了更好地说明本发明提供的远光光学元件的工作过程，以下结合该远光光学元件在应用于远光照明单元时进行详细的介绍和说明，远光照明单元中设置有与远光入光部11对应设置的远光光源6、与辅助点亮入光部12对应设置的辅助点亮光源7。该远光照明单元的工作过程为：参见图3，在近光照明模式下，打开辅助点亮光源7，辅助点亮光源7发出的光线从辅助点亮入光部12的入光面进入并从辅助光线出光面13出射，再由辅助光线入光面23进入辅助点亮导光部22，经辅助点亮导光部22传输至出光部3，并在出光部3内发生全反射，光线可在出光部3的出光面和侧面上发生多次全反射，光线在被多次全反射的过程中，由于远光光学元件中的杂质使得这些光线发生漫反射，漫反射后的光线由出光部3的出光面折射出去，以形成辅助点亮光线，辅助点亮光线射入人眼，使得人在车灯前方看去，该远光照明单元也是发光的，实现近光照明模式下该远光照明单元也被点亮；在远光模式下，打开远光光源6，远光光源6发出的光线从远光入光部11的入光面进入并经远光导光部21传输至出光部3，最后经出光部3的出光面出射以形成远光照明光线。在此需要说明的是，近光照明模式下远光光源6处于关闭状态，远光模式下，辅助点亮光源7可以是打开状态，也可以是关闭状态，优选为辅助点亮光源7为关闭状态，可以降低车灯的功耗。
本发明中，辅助点亮入光部12可以位于远光入光部11的上方、下方、左方和右方中的任意一个方位，具体地可以根据实际生产和使用需求确定两者的结构形式。优选情况下，辅助点亮入光部12位于远光入光部11的下方，辅助点亮导 光部22位于远光导光部21的下方，有利于远光光学元件的结构设计，在应用于车灯时，减小或避免对近光照明的影响。
本发明中，辅助光线出光面13、辅助光线入光面23和辅助点亮入光部12可以分别设置为平面，结构简单，可制造性好。可选地，辅助点亮入光部12的入光面也可以是向后凸出的曲面，或者是其他能够聚光的结构，以使得辅助点亮光源7发出的光线，更多地经辅助点亮入光部12的入光面进入辅助点亮入光部12，从而提高对辅助点亮光源7的光线利用率。相应地，辅助光线出光面13设置为向前凸出的曲面，辅助光线入光面23也设置为向后凸出的曲面，通过辅助光线出光面13和辅助光线入光面23的配合，能够使进入辅助点亮导光部22的光线能够更多地在出光部3发生全反射，提高出光部3的点亮效果。
作为本发明的一种优选实施方式，参见图4至图6，导光部2的外侧面上设置有或一体形成有不透光壳体4。不透光壳体4与导光部2可以采用双色注塑一体成型，也可以采用嵌件注塑一体成型，还可以采用其他成型方式，只要能够将不透光壳体4形成于导光部2的外部，均属于本发明的保护范围。当然，为了光线传输的需要，不透光壳体4不会覆盖于辅助光线入光面23上，避免影响光线进入辅助点亮导光部22。由此可以看出，由辅助光线入光面23进入到辅助点亮导光部22内的光线和由远光入光部11进入远光导光部21的光线，如射至导光部2的侧面或经出光部3的出光面反射至导光部2的侧面时，能够被不透光壳体4吸收，防止远光光源6和辅助点亮光源7发出的光线从出光部3的出光面以外的区域出射而形成杂散光，影响出光效果。
作为本发明的另一种优选实施方式，出光部3的出光面形成为向外凸出的单个曲面；或者出光部3的出光面设置为由呈网格状分布的若干平面或曲面拼接形成的前凸面。出光部3的出光面设置为由呈网格状分布的若干平面或曲面拼接形成的前凸面，使得出射光线扩散一定的角度，一方面使得光线投射形成的光形的边界角度增大，另一方面还能使得光线分布均匀，另外，还能够方便调光。示例性地，参见图3，为了使辅助点亮导光部22内的光线能够在出光部3的出光面尽可能多地发生全反射，可通过调节出光部3的出光面下部的网格面的大小、曲率和倾斜方向等，最终使更多的光线反射角达到全反射的临界角，从而使更多光线在出光部3的出光面发生全反射，进而发生更多的漫反射，更多漫反射的光线射入人眼，使远光照明单元的点亮亮度更接近近光照明单元的亮度，提高车灯外 观点亮效果。
作为本发明的另一种优选实施方式，参见图1，远光入光部11包括至少一个入光结构14，每个入光结构14的后端面分别设置为向后凸出的曲面或锥形面，入光结构14呈矩阵式排列，入光结构14设置为至少一排。入光结构14的后端面分别设置为向后凸出的曲面或锥形面，能够对入射的光线进行汇聚，可选地，入光结构14设置为一排、两排或多排，入光结构14设置为依次连接或者间隔设置。
优选情况下，远光导光部21、辅助点亮导光部22和出光部3一体成型，保证三者之间的相对位置精度，材料可以为透明材质的塑料、硅胶和玻璃等，塑料可用PMMA或PC。进一步优选地，入光部1、导光部2和出光部3可以设置为一体成型，入光部1包括远光入光部11和辅助点亮入光部12，导光部2划分为远光导光部21和辅助点亮导光部22的区域，辅助点亮导光部22与辅助点亮入光部12之间设置间隙，辅助点亮入光部12朝向间隙的端面形成为辅助光线出光面13，辅助点亮导光部22朝向间隙的端面形成为辅助光线入光面23，从而简化安装结构和安装工艺，提高安装精度，降低制造成本。
本发明第二方面还提供一种远光照明单元，参见图7至图10，包括上述技术方案中任一项所述的远光光学元件、线路板5、与远光入光部11对应设置的远光光源6和与辅助点亮入光部12对应设置的辅助点亮光源7，远光光源6和辅助点亮光源7设置在线路板5上。
可选地，远光照明单元上还设置有用于对线路板5和远光光学元件提供支撑、散热功能的散热器8、散热支架等结构。在导光部2的外侧面上设置有或一体形成有不透光壳体4时，不透光壳体4能够与线路板5和散热器8连接，以对远光光学元件支撑。
在本发明中远光照明单元一个相对优选的实施例中，包括远光光学元件、线路板5、位于线路板5上的光源和与线路板5连接的散热器8，远光光学元件包括由后向前依次设置且一体成型的入光部1、导光部2和出光部3，入光部1包括上下设置的远光入光部11和辅助点亮入光部12，导光部2的上部和下部划分为远光导光部21和辅助点亮导光部22的区域，远光导光部21与远光入光部11对应设置且一体连接，辅助点亮导光部22与辅助点亮入光部12对应且两者之间设置间隙，辅助点亮入光部12朝向间隙的端面形成为辅助光线出光面13，辅助 点亮导光部22朝向间隙的端面形成为辅助光线入光面23；辅助点亮入光部12的入光面和辅助光线入光面23分别设置为向后凸出的曲面，辅助光线出光面13设置为向前凸出的曲面，导光部2的外侧面上设置有或一体形成有不透光壳体4，不透光壳体4与线路板5和散热器8连接，出光部3的出光面设置为由呈网格状分布的若干曲面拼接形成的前凸面，远光入光部11包括多个入光结构14，每个入光结构14的后端面分别设置为向后凸出的曲面，入光结构14设置为一排；光源包括与远光入光部11对应设置的远光光源6和与辅助点亮入光部12对应设置的辅助点亮光源7。
上述实施例所述的远光照明单元在远光模式下，打开远光光源6、关闭辅助点亮光源7，远光光源6发出的光线经入光结构11聚光后进入远光导光部21，再经远光导光部21传输至出光部3，最后经出光部3的出光面以一定的扩散角度出射，以形成远光照明光线；在近光照明模式下，打开辅助点亮光源7、关闭远光光源6，辅助点亮光源7发出的光线经辅助点亮入光部12的入光面的聚光后进入，并从辅助光线出光面13折射至辅助光线入光面23，经辅助光线入光面23折射后进入辅助点亮导光部22，并由辅助点亮导光部22传输至出光部3，在出光部3内进行多次全反射，光线在被多次全反射的过程中，由于远光光学元件中的杂质使得这些光线发生漫反射，漫反射后的光线从出光部3的出光面较为均匀地出射，以形成辅助点亮光线，辅助点亮光线射入人眼，使人在车灯前方看上去，该远光照明单元也是发光的，实现近光照明模式下该远光照明单元也被点亮的效果；不透光壳体4在对远光光学元件支撑的基础上还能够防止远光光源6和辅助点亮光源7发出的光线从出光部3的出光面以外的区域出射而形成杂散光。
进一步地，本发明第三方面还提供一种车灯，包括根据第二方面技术方案中所述的远光照明单元。其中远光照明单元设置为多个，多个远光照明单元一体设置或分散设置于车灯内。可选地，远光照明单元按照纵向、横向或者倾斜排列分布于车灯内。
更进一步地，本发明第四方面还提供一种车辆，包括根据第三方面技术方案中所述的车灯，因此至少具有上述远光光学元件、远光照明单元和车灯实施例的技术方案所带来的所有有益效果。根据本发明实施例的车辆的构成和操作对于本领域技术人员而言是可以理解并且容易实现的，因此不再详细描述。
由以上描述可以看出，本发明的远光光学元件在远光入光部11的一侧设置 有辅助点亮入光部12，相应地，在远光导光部21的一侧设置有辅助点亮导光部22，通过辅助点亮入光部12、辅助点亮导光部22与出光部3的配合，使得辅助点亮入光部12接收的光线能够经由辅助光线出光面13折射至辅助光线入光面23，再经辅助光线入光面23折射至辅助点亮导光部22，经辅助点亮导光部22传输至出光部3并在出光部3内进行多次全反射，全反射的光线经远光光学元件中的杂质漫反射后，由出光部3的出光面出射形成辅助点亮光线，从而能够在近光照明模式下点亮出光部3的出光面；该远光光学元件应用于远光照明单元时，能够形成出光面点亮的视觉效果，在近光照明模式下也能呈现车灯整体的轮廓造型，从而提升车灯的外观造型美观性。
以上结合附图详细描述了本发明的优选实施方式，但是，本发明并不限于上述实施方式中的具体细节，在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，这些简单变型均属于本发明的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。
此外，本发明的各种不同的实施方式之间也可以进行任意组合，只要其不违背本发明的思想，其同样应当视为本发明所公开的内容。

Claims (10)

  1. 一种远光光学元件，其特征在于，包括由后向前依次设置的入光部(1)、导光部(2)和出光部(3)，所述入光部(1)包括远光入光部(11)和辅助点亮入光部(12)，所述导光部(2)包括与所述远光入光部(11)对应设置的远光导光部(21)和与所述辅助点亮入光部(12)对应设置的辅助点亮导光部(22)，所述远光导光部(21)与所述远光入光部(11)一体连接，所述辅助点亮导光部(22)与所述辅助点亮入光部(12)独立设置，所述辅助点亮入光部(12)的前端面形成为辅助光线出光面(13)，所述辅助点亮导光部(22)的后端面形成为辅助光线入光面(23)；
    所述辅助点亮入光部(12)接收的光线经由所述辅助光线出光面(13)出射至所述辅助光线入光面(23)，再经所述辅助点亮导光部(22)传输至所述出光部(3)，在所述出光部(3)内进行全反射后形成漫反射，所述漫反射的光线由所述出光部(3)的出光面出射以形成辅助点亮光线。
  2. 根据权利要求1所述的远光光学元件，其特征在于，所述辅助点亮入光部(12)位于所述远光入光部(11)的下方，所述辅助点亮导光部(22)位于所述远光导光部(21)的下方。
  3. 根据权利要求1所述的远光光学元件，其特征在于，所述辅助光线出光面(13)设置为向前凸出的曲面，所述辅助光线入光面(23)和所述辅助点亮入光部(12)的入光面分别设置为向后凸出的曲面。
  4. 根据权利要求1所述的远光光学元件，其特征在于，所述导光部(2)的外侧面上设置有或一体形成有不透光壳体(4)。
  5. 根据权利要求1至4中任意一项所述的远光光学元件，其特征在于，所述出光部(3)的出光面形成为向外凸出的单个曲面；或者
    所述出光部(3)的出光面设置为由呈网格状分布的若干平面或曲面拼接形成的前凸面。
  6. 根据权利要求1至4中任意一项所述的远光光学元件，其特征在于，所述远光入光部(11)包括至少一个入光结构(14)，每个所述入光结构(14)的后端面分别设置为向后凸出的曲面或锥形面，所述入光结构(14)呈矩阵式排列，所述入光结构(14)设置为至少一排。
  7. 根据权利要求1至4中任意一项所述的远光光学元件，其特征在于，所述远光导光部(21)、所述辅助点亮导光部(22)和所述出光部(3)一体成型。
  8. 一种远光照明单元，其特征在于，包括权利要求1至7中任意一项所述的远光光学元件、线路板(5)、与所述远光入光部(11)对应设置的远光光源(6)和与所述辅助点亮入光部(12)对应设置的辅助点亮光源(7)，所述远光光源(6)和所述辅助点亮光源(7)设置在所述线路板(5)上。
  9. 一种车灯，其特征在于，包括根据权利要求8所述的远光照明单元。
  10. 一种车辆，其特征在于，包括根据权利要求9所述的车灯。
PCT/CN2021/099311 2020-11-27 2021-06-10 远光光学元件、远光照明单元、车灯和车辆 WO2022110760A1 (zh)

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