WO2020052397A1 - 一种车灯 - Google Patents

一种车灯 Download PDF

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WO2020052397A1
WO2020052397A1 PCT/CN2019/100475 CN2019100475W WO2020052397A1 WO 2020052397 A1 WO2020052397 A1 WO 2020052397A1 CN 2019100475 W CN2019100475 W CN 2019100475W WO 2020052397 A1 WO2020052397 A1 WO 2020052397A1
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light
emitting
emitting array
array
projection lens
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PCT/CN2019/100475
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English (en)
French (fr)
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张贤鹏
李明亮
马勇
李屹
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深圳市绎立锐光科技开发有限公司
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Publication of WO2020052397A1 publication Critical patent/WO2020052397A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24Light guides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25Projection lenses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00Exterior vehicle lighting devices for illuminating purposes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

一种车灯(10),包括:第一发光阵列(110)和第二发光阵列(120),第二发光阵列(120)包括第一发光单元(121),当第一发光阵列(110)单独开启时,车灯(10)出射近光光束,当第一发光阵列(110)与第二发光阵列(120)同时开启时,车灯(10)出射远光光束;投影镜头(150),设置在发光阵列的出射光路上,第一发光阵列(110)和第二发光阵列(120)与投影镜头(150)的距离大于投影镜头(150)的焦距;遮光装置(130),设置在第一发光阵列(110)与第二发光阵列(120)之间,第一面(131)靠近第一发光阵列(110)设置,为遮光面,第二面(132)靠近第二发光阵列(120)设置,为反射面,第二面(132)通过第一面(131)的近光截止线轮廓与第一面(131)连接;光引导装置(140),用于将第一发光单元(121)发出的光引导至第二面(132)并形成出射光。该车灯(10)实现了无明暗纹、近光截止线清晰、中心亮度高的远近光一体照明。

Description

一种车灯A car light 技术领域Technical field

本发明涉及照明技术领域,特别是涉及一种车灯。The invention relates to the field of lighting technology, in particular to a vehicle lamp.

背景技术Background technique

自从2007年LED汽车大灯问世以来,汽车大灯逐渐从卤素灯、氙灯向LED车灯过渡。尤其是近几年,随着新能源汽车的磅礴发展,LED车灯进入井喷式发展阶段。LED车灯具有长寿命、低能耗及相对氙灯低成本的优势,逐渐从高端车向低端车覆盖。Since the advent of LED automotive headlights in 2007, automotive headlights have gradually transitioned from halogen and xenon lamps to LED headlights. Especially in recent years, with the magnificent development of new energy vehicles, LED lights have entered a blowout development stage. LED car lights have the advantages of long life, low energy consumption and low cost compared to xenon lamps, and gradually cover from high-end cars to low-end cars.

现有的LED车灯普遍采用原卤素灯的设计思路,尤其是远近一体大灯。该技术方案通常利用高亮度LED作为发光中心,替代原卤素灯丝,然后通过反光罩对LED的出射光进行收集,使得LED的出射光在热点处会聚,然后通过设置在热点位置的可活动的机械挡板进行远近光切换——当挡板位于光路中时车灯出射近光,当挡板离开光路时车灯出射远光。然而该技术方案是一个过渡方案,完全没有利用LED组合灵活、开关响应快的优势,反而与传统的卤素灯、氙灯一样,由于挡板的遮挡,在近光灯模式下存在光浪费的现象。而且,可活动的挡板在车灯中增加了机械运动装置,降低了车灯的可靠性。Existing LED car lights generally adopt the design idea of the original halogen lamp, especially the far and near integrated headlights. This technical solution usually uses high-brightness LEDs as the light-emitting center instead of the original halogen filament, and then collects the LED's outgoing light through a reflector, so that the LED's outgoing light converges at the hot spot, and then passes through the movable machinery set at the hot spot position. Baffle switch between near and far light-When the baffle is located in the light path, the headlights emit low beam, and when the baffle leaves the light path, the headlights emit high beam. However, this technical solution is a transitional solution. It does not take advantage of the flexible combination of LEDs and fast switching response. On the contrary, like traditional halogen lamps and xenon lamps, due to the blocking of the baffle, there is a waste of light in the low beam mode. Moreover, the movable baffle adds a mechanical movement device to the vehicle light, which reduces the reliability of the vehicle light.

为了发挥LED的优势,本领域研究人员设计了全新的LED车灯技术方案——通过将LED阵列排布成所需要的光分布图案,利用投影成像的方式,将LED阵列发光图案投射到照明区域,并通过控制LED阵列的开关,分别形成近光照明和远光照明,实现数字化的远近一体车灯。该技术方案抛弃了传统车灯方案中的近光挡板,试图利用LED图案的边缘形成近光截止线。In order to give full play to the advantages of LEDs, researchers in the field have designed a new technical solution for LED car lights-by arranging the LED array into the required light distribution pattern, and using projection imaging to project the LED array light pattern onto the lighting area And, by controlling the switch of the LED array, low-beam lighting and high-beam lighting are respectively formed to realize digital far-near integrated car lights. This technical solution discards the low-beam baffle in the traditional lamp solution, and attempts to use the edges of the LED pattern to form the low-beam cutoff line.

例如专利CN102537822A公开了一种汽车前照灯光源模组,如图1所示,将LED阵列11排列成为近光照明的图案,并特别在中心位置设置旋转了45°的小型LED芯片以实现截止线轮廓。For example, the patent CN102537822A discloses a car headlight light source module. As shown in FIG. 1, the LED array 11 is arranged into a pattern of low beam lighting, and a small LED chip rotated by 45 ° is arranged at the center to achieve cut-off Line silhouette.

然而本申请发明人发现,此类利用LED阵列成像得到近光照明的技术方案存在一个普遍的技术问题——当LED阵列在预定位置成像时,LED发光芯片彼此的间隔也会成像在照明区域,形成暗纹,导致照度极不均匀。为了消除暗纹,有技术使LED阵列在光轴方向上偏离成像镜头的焦平面,从而使得各个LED的光斑扩散、模糊化,然而该技术方案又会使得近光截止线一同模糊化,无法满足法规要求。因此,LED阵列的暗纹与截止线的清晰度成为一对不可兼顾的矛盾。However, the inventor of the present application has found that there is a general technical problem with this type of technical solution that uses LED array imaging to obtain low-light illumination. When the LED array is imaged at a predetermined position, the interval between the LED light emitting chips will also be imaged in the illumination area. Dark streaks are formed, resulting in extremely uneven illumination. In order to eliminate dark streaks, there is a technology to make the LED array deviate from the focal plane of the imaging lens in the direction of the optical axis, so that the spot of each LED is diffused and blurred. However, this technical solution will also blur the low-light cutoff line, which cannot be satisfied. Regulatory requirements. Therefore, the dark lines of the LED array and the sharpness of the cutoff line become a pair of contradictions that cannot be taken into account.

此外,由于LED发光芯片存在一定的体积,对应近光的LED与只对应远光的LED在近光截止线附近不可能无限靠近,导致车灯照明的光斑中心点(HV点)亮度不够,难以实现远距离照射。In addition, because the LED light emitting chip has a certain volume, the LED corresponding to the low beam and the LED corresponding only to the high beam cannot be infinitely close to each other near the cutoff line of the low beam, resulting in insufficient brightness of the center point (HV point) of the spot of the vehicle lighting, which is difficult Achieve long-distance irradiation.

发明内容Summary of the Invention

针对上述现有技术的LED阵列车灯难以同时获得照度分布均匀和截止线清晰的照明分布的缺陷,本发明提供一种照度分布均匀、截止线清晰的远近光一体车灯,包括:第一发光阵列和第二发光阵列,所述第二发光阵列包括第一发光单元,当所述第一发光阵列单独开启时,所述车灯出射近光光束,当所述第一发光阵列与所述第二发光阵列同时开启时,所述车灯出射远光光束;投影镜头,设置在所述第一发光阵列与所述第二发光阵列的出射光路上,所述第一发光阵列和所述第二发光阵列与所述投影镜头的距离大于所述投影镜头的焦距;遮光装置,设置在所述第一发光阵列与所述第二发光阵列之间,包括第一面和第二面,所述第一面靠近所述第一发光阵列设置,所述第二面靠近所述第二发光装置设置,所述第一面为遮光面,包括设置于所述投影镜头的前焦面和光轴上的近光截止线轮廓,所述第二面为反射面且与所述近光截止线轮廓连接;光引导装置,设置在所述第二发光阵列的出射光路上,用于将所述第一发光单元发出的光引导至所述第二面,该光经所述第二面反射后形成出射光。Aiming at the disadvantages of the above-mentioned prior art LED array lamp, it is difficult to obtain uniform illumination distribution and clear cutoff line at the same time, the present invention provides an integrated far and near light headlight with uniform illumination distribution and clear cutoff line, including: a first light An array and a second light-emitting array. The second light-emitting array includes a first light-emitting unit. When the first light-emitting array is turned on separately, the vehicle light emits a low-beam light beam. When two light emitting arrays are turned on at the same time, the headlight emits a high beam; a projection lens is arranged on the light emitting paths of the first light emitting array and the second light emitting array, and the first light emitting array and the second light emitting array The distance between the light-emitting array and the projection lens is greater than the focal length of the projection lens; a shading device is disposed between the first light-emitting array and the second light-emitting array, and includes a first surface and a second surface, and the first One side is disposed near the first light emitting array, the second side is disposed near the second light emitting device, and the first surface is a light-shielding surface including a front focal plane disposed on the projection lens. And the low-beam cut-off line profile on the optical axis, the second surface is a reflective surface and is connected to the low-beam cut-off line profile; a light guiding device is provided on the exit light path of the second light-emitting array, and is used for The light emitted by the first light emitting unit is guided to the second surface, and the light is reflected by the second surface to form outgoing light.

与现有技术相比,本发明包括如下有益效果:利用包含可独立控制的第一发光阵列和第二发光阵列的发光阵列实现远近光输出控制,通过将发光阵列设置在远离投影镜头焦距的位置,使成像离焦以消除发光阵 列的发光元件之间的间隙带来的明暗纹;并在第一发光阵列与第二发光阵列之间设置遮光装置,利用遮光装置第一面设置在投影镜头的前焦面和光轴上的近光截止线轮廓,通过投影成像得到清晰的近光截止线轮廓;还通过光引导装置将第一发光单元的光引导至遮光装置第一面背后与近光截止线轮廓连接的第二面,经第二面反射后形成出射光束,使得近光截止线无论是第一发光阵列侧还是第二发光阵列侧都有光束直接掠过,消除了遮光装置的厚度对光斑明暗分布的影响,保证了车灯照明中心光斑的高亮度和亮度均匀性。Compared with the prior art, the present invention includes the following beneficial effects: the use of a light emitting array including independently controllable first light emitting arrays and second light emitting arrays to achieve far and near light output control, and by setting the light emitting arrays away from the focal length of the projection lens To defocus the image to eliminate light and dark lines caused by the gap between the light-emitting elements of the light-emitting array; and a light-shielding device is provided between the first light-emitting array and the second light-emitting array, and the first side of the light-shielding device is arranged on the projection lens. The contour of the low beam cut-off line on the front focal plane and the optical axis can be obtained through projection imaging; the light of the first light-emitting unit is also guided by the light guide device to the back of the first face of the light-shielding device and the low beam cut-off line. The second surface connected by the contour is reflected by the second surface to form an outgoing beam, so that the low beam cutoff line directly passes through the beam on both the first light emitting array side and the second light emitting array side, eliminating the thickness of the light shielding device and the light spot. The influence of light and dark distribution ensures the high brightness and uniformity of the light spot in the center of the vehicle lighting.

本发明通过将各个技术特征有机结合后,利用各个器件之间位置关系的巧妙设计,实现了无明暗纹、近光截止线清晰、中心亮度高的远近光一体车灯照明,克服了现有技术中各个效果无法兼得的缺陷。By combining various technical features organically, the present invention utilizes the clever design of the positional relationship between the various devices to realize the integration of far and near light headlights with no dark and dark lines, clear low beam cutoff lines, and high center brightness, which overcomes the existing technology. Each of these effects cannot be achieved.

在一个实施方式中,所述第二面相对于所述投影镜头的光轴倾斜设置,所述第一面相对于所述投影镜头的光轴平行设置。该技术方案使得第一发光阵列能够尽可能的靠近投影镜头的光轴,更多的光在光轴附近出射、被收集、被投射,提高了第一发光阵列的光利用率和近光截止线附近的照明区域亮度。In one embodiment, the second surface is disposed obliquely with respect to the optical axis of the projection lens, and the first surface is disposed parallel to the optical axis of the projection lens. This technical solution enables the first light emitting array to be as close to the optical axis of the projection lens as possible, and more light is emitted, collected, and projected near the optical axis, which improves the light utilization ratio and the low beam cutoff line of the first light emitting array. The brightness of the nearby illuminated area.

在一个实施方式中,所述第一发光单元发出的光经所述第二面反射后,主光轴与所述投影镜头的光轴平行。该技术方案使得第一发光单元的光离开第二面后仍尽可能保持在投影镜头的光轴附近,有利于投影镜头对该光的收集,进而提高远光照明的中心光斑亮度。In one embodiment, after the light emitted by the first light emitting unit is reflected by the second surface, the main optical axis is parallel to the optical axis of the projection lens. This technical solution enables the light of the first light-emitting unit to remain as close to the optical axis of the projection lens as possible after leaving the second surface, which is beneficial to the collection of the light by the projection lens, thereby improving the brightness of the central spot of high-beam illumination.

在一个实施方式中,所述光引导装置包括第一反射面,所述第一发光单元发出的光经所述第一反射面反射至所述第二面。该技术方案通过二次反射将光路平移,提高了第二发光阵列位置的自由度,有利于紧凑型设计。In one embodiment, the light guiding device includes a first reflecting surface, and light emitted by the first light emitting unit is reflected to the second surface through the first reflecting surface. This technical solution translates the light path through the secondary reflection, which improves the degree of freedom of the position of the second light emitting array, and is conducive to compact design.

具体地,在一个实施方式中,第二面相对于投影镜头呈45°放置,第一反射面与第二面相平行,第一发光单元发出的光沿平行于投影镜头光轴方向出射,经两次反射后,以主光轴平行于投影镜头光轴的方向出射。该技术方案中,第一发光阵列和第二发光阵列可以全部垂直于投影镜头光轴放置,有利于发光元件及其相应电路板的紧凑排布,而且允许第二发光阵列中的部分发光元件的出射光直接被投影镜头收集,不经过 光引导装置。Specifically, in one embodiment, the second surface is placed at 45 ° with respect to the projection lens, the first reflective surface is parallel to the second surface, and the light emitted by the first light emitting unit is emitted in a direction parallel to the optical axis of the projection lens, and passes twice. After reflection, the light is emitted in a direction in which the main optical axis is parallel to the optical axis of the projection lens. In this technical solution, the first light-emitting array and the second light-emitting array can all be placed perpendicular to the optical axis of the projection lens, which is beneficial to the compact arrangement of the light-emitting elements and their corresponding circuit boards. The emitted light is directly collected by the projection lens and does not pass through the light guiding device.

在一个实施方式中,所述第一反射面为全反射棱镜的全反射面。In one embodiment, the first reflection surface is a total reflection surface of a total reflection prism.

在一个实施方式中,所述光引导装置包括彼此平行设置的多个反射面,所述第二发光阵列包括与所述多个反射面一一对应的多组发光单元,各组发光单元分别朝向其对应的反射面发射光束,被反射后经与该反射面相邻的反射面二次反射后形成出射光。通过该技术方案,相当于将第二发光阵列发出的光整体向遮光装置平移,有利于远光部分光斑的照度均匀性得到保持。具体地,光引导装置可以是多个全反射棱镜拼接成的整体,该结构有利于机械固定和结构的可靠性。In one embodiment, the light guiding device includes a plurality of reflective surfaces disposed parallel to each other, and the second light emitting array includes a plurality of groups of light emitting units corresponding to the plurality of reflective surfaces in a one-to-one manner, and each group of light emitting units faces respectively The corresponding reflecting surface emits a light beam, and after being reflected, it is reflected by the reflecting surface adjacent to the reflecting surface for secondary reflection to form outgoing light. This technical solution is equivalent to translating the light emitted by the second light-emitting array as a whole toward the light-shielding device, which is beneficial to maintaining the uniformity of the illuminance of the light spot of the high beam portion. Specifically, the light guide device may be a whole formed by splicing a plurality of total reflection prisms, and the structure is beneficial to mechanical fixing and structural reliability.

在一个实施方式中,所述第一发光单元的发光面朝向所述第二面发光。该技术方案将第一发光单元与第二发光阵列的其他发光单元独立出来,能够独立的设置高亮度的第一发光单元,降低了发光单元的集成难度,并提高远光照明的中心光斑亮度。在进一步优选的实施方式中,光引导装置可以简化为一个准直透镜或会聚透镜,直接将第一发光单元的光收集引导至遮光装置的第二面,而第二发光阵列的其他发光单元沿平行于投影镜头的光轴方向发光,直接被投影镜头收集。In one embodiment, a light emitting surface of the first light emitting unit emits light toward the second surface. This technical solution separates the first light-emitting unit from other light-emitting units of the second light-emitting array, and can independently set a high-brightness first light-emitting unit, which reduces the integration difficulty of the light-emitting unit and improves the central spot brightness of high-beam illumination. In a further preferred embodiment, the light guiding device can be simplified as a collimating lens or a condensing lens, and directs the light collection of the first light emitting unit to the second surface of the light shielding device, while other light emitting units of the second light emitting array are along Light emitted parallel to the optical axis of the projection lens is directly collected by the projection lens.

在一个实施方式中,所述第一发光阵列与所述第二发光阵列为LED阵列,所述第一发光阵列与所述第二发光阵列的出光面平行于所述投影镜头的前焦面。LED阵列通过相应的电路元件控制,能够很容易实现单个发光元件的开关控制和亮度控制,而且可以通过LED单元的图案摆放,可以很容易实现对车灯照明图案。In one embodiment, the first light emitting array and the second light emitting array are LED arrays, and the light emitting surfaces of the first light emitting array and the second light emitting array are parallel to the front focal plane of the projection lens. The LED array is controlled by the corresponding circuit elements, which can easily realize the switching control and brightness control of a single light-emitting element, and the pattern of the LED unit can be used to easily realize the lighting pattern of the vehicle lights.

在一个实施方式中,所述第一发光阵列和/或所述第二发光阵列包括波长转换元件,所述车灯还包括与所述波长转换元件对应的激发光源,该激发光源用于远程激发所述波长转换元件。激发光源可以选择激光光源,激光激发波长转换元件能够相对于LED出射能量密度更高的光,实现更高亮度和/或更低能耗。波长转换元件的发光方式可以为透射式激发(入射面与出射面为相对面),也可以为反射式激发(入射面与出射面为同一面)。通过控制激发光源的开关能够控制波长转换元件的亮灭。In one embodiment, the first light emitting array and / or the second light emitting array includes a wavelength conversion element, and the vehicle light further includes an excitation light source corresponding to the wavelength conversion element, and the excitation light source is used for remote excitation. The wavelength conversion element. A laser light source can be selected as the excitation light source. The laser excitation wavelength conversion element can emit light with higher energy density relative to the LED to achieve higher brightness and / or lower energy consumption. The wavelength conversion element may emit light in a transmission-type excitation (the incident surface and the emission surface are opposite surfaces) or in a reflection-type excitation (the incidence surface and the emission surface are the same surface). The on / off of the wavelength conversion element can be controlled by controlling the switch of the excitation light source.

在一个实施方式中,所述第一发光单元为波长转换元件。该技术方案能够提高远光照明的中心光斑亮度,获得更远的照射距离。In one embodiment, the first light emitting unit is a wavelength conversion element. This technical solution can improve the brightness of the central spot of high-beam illumination, and obtain a longer irradiation distance.

附图说明BRIEF DESCRIPTION OF THE DRAWINGS

图1为现有技术中的一种车灯光源的结构示意图;FIG. 1 is a schematic structural diagram of a vehicle light source in the prior art; FIG.

图2为本发明实施例一的车灯的结构示意图;2 is a schematic structural diagram of a vehicle lamp according to Embodiment 1 of the present invention;

图3为本发明实施例二的车灯的侧视结构示意图;3 is a schematic side structural view of a vehicle lamp according to a second embodiment of the present invention;

图4为本发明实施例二的车灯的正视结构示意图;FIG. 4 is a schematic structural view of a vehicle lamp according to a second embodiment of the present invention; FIG.

图5A为本发明车灯的近光光分布仿真效果;FIG. 5A is a simulation effect of a low-beam light distribution of a vehicle lamp according to the present invention; FIG.

图5B为本发明车灯的远光光分布仿真效果;FIG. 5B is a simulation result of the high beam light distribution of the vehicle lamp of the present invention; FIG.

图6为本发明实施例三的车灯的结构示意图;6 is a schematic structural diagram of a vehicle lamp according to a third embodiment of the present invention;

图7为本发明实施例四的车灯的结构示意图。FIG. 7 is a schematic structural diagram of a vehicle lamp according to a fourth embodiment of the present invention.

具体实施方式detailed description

本发明的发明构思以设计一款无需机械调节的远近一体汽车大灯为目的,寻求照明光束的照度均匀性、近光截止线清晰度和远光中心亮度的优势共存。具体通过将具有近光截止线轮廓的遮光面第一区域与对应远光中心照明区域的发光元件共同设置在投影镜头的光轴上,并结合遮光面和发光元件与投影镜头的焦平面的位置关系,实现了上述的优势共存。The inventive concept of the present invention aims at designing a far-near integrated car headlight without mechanical adjustment, and seeks for the coexistence of the advantages of uniformity of the illumination beam illumination, the definition of the cut-off line of the low beam, and the brightness of the high beam center. Specifically, the first area of the light-shielding surface with a low-beam cut-off line profile and the light-emitting element corresponding to the central high-light illumination area are jointly set on the optical axis of the projection lens, and the light-shielding surface and the position of the light-emitting element and the focal plane of the projection lens are combined. Relationship, achieving the above mentioned coexistence of advantages.

本发明中,近光截止线轮廓是指近似近光法规线HV-H1-H2线或HV-H2线的形状轮廓。In the present invention, the low-beam cutoff line profile refers to a shape profile that approximates the low-beam law line HV-H1-H2 line or the HV-H2 line.

下面结合附图和实施方式对本发明实施例进行详细说明。The embodiments of the present invention will be described in detail below with reference to the drawings and embodiments.

请参见图2,为本发明实施例一的车灯的结构示意图。车灯10包括第一发光阵列110、第二发光阵列120、遮光装置130、光引导装置140、投影镜头150和基板160。第一发光阵列110和第二发光阵列120发出的光经遮光装置130整形后,被投影镜头150收集后投射,从而在远处形成车灯照明光斑。Please refer to FIG. 2, which is a schematic structural diagram of a vehicle lamp according to the first embodiment of the present invention. The vehicle lamp 10 includes a first light emitting array 110, a second light emitting array 120, a light shielding device 130, a light guiding device 140, a projection lens 150, and a substrate 160. The light emitted by the first light-emitting array 110 and the second light-emitting array 120 is shaped by the shading device 130, collected by the projection lens 150, and projected, thereby forming a lighting spot of a vehicle light at a distance.

本实施例中,第一发光阵列110对应近光,当其处于单独开启时,车灯出射近光光束;第二发光阵列120对应远光,当第一发光阵列110和第二发光阵列120同时开启时,车灯出射远光光束。In this embodiment, the first light emitting array 110 corresponds to the low beam, and when it is turned on separately, the headlight emits a low beam; the second light emitting array 120 corresponds to the high beam, and when the first light emitting array 110 and the second light emitting array 120 are simultaneously When turned on, the headlights emit a high beam.

投影镜头150设置在发光阵列的出射光路上,如图所示的截面侧视图上,投影镜头150包括以点划线表示的光轴X和以双点划线表示的前 焦面F。第一发光阵列110和第二发光阵列120设置在前焦面F的左侧,与投影镜头150的距离大于其焦距。该设置使得第一发光阵列110和第二发光阵列120的发光面处于“离焦”状态,从而使得发光阵列发出的光经投影镜头投射成像后扩散模糊,消除了发光阵列的发光单元彼此之间的间隙的暗纹。The projection lens 150 is disposed on the exit light path of the light-emitting array. As shown in the sectional side view in the figure, the projection lens 150 includes an optical axis X indicated by a chain line and a front focal plane F indicated by a chain line. The first light emitting array 110 and the second light emitting array 120 are disposed on the left side of the front focal plane F, and the distance from the projection lens 150 is greater than the focal distance thereof. This setting makes the light emitting surfaces of the first light emitting array 110 and the second light emitting array 120 in a "defocused" state, so that the light emitted by the light emitting array is diffused and blurred after being projected and imaged by the projection lens, eliminating the light emitting units of the light emitting array from each other. Dark lines in the gaps.

本实施例中,投影镜头150包括两个透镜,可以理解,本发明对投影镜头包含的透镜数量不做限制,也可以为一个透镜或者三个及以上透镜组成。In this embodiment, the projection lens 150 includes two lenses. It can be understood that the present invention does not limit the number of lenses included in the projection lens, and may also be composed of one lens or three or more lenses.

遮光装置130设置在第一发光阵列110与第二发光阵列120之间,将第一发光阵列110与第二发光阵列120隔开。The light shielding device 130 is disposed between the first light emitting array 110 and the second light emitting array 120, and separates the first light emitting array 110 and the second light emitting array 120.

遮光装置130靠近第一发光阵列110的表面为第一面131,第一面131为遮光面,第一发光阵列110发出的光能够直接照射到第一面131上并被阻挡。其中,第一面131上设置有近光截止线轮廓,位于投影镜头150的前焦面上和光轴上,如图所示在虚线圆圈1311位置。当第一发光阵列110的光经过近光截止线轮廓时,被部分遮挡,从而形成满足法规的近光光型。由于近光截止线轮廓设置在投影镜头150的前焦面和光轴位置,因此能够在照明区域形成清晰的近光截止线,而且近光照明区域的靠近近光截止线的位置具有高亮度。The surface of the light-shielding device 130 near the first light-emitting array 110 is a first surface 131, and the first surface 131 is a light-shielding surface. The light emitted by the first light-emitting array 110 can directly shine on the first surface 131 and be blocked. Among them, the first surface 131 is provided with a low-beam cut-off line contour, which is located on the front focal plane and the optical axis of the projection lens 150, as shown in the dotted circle 1311 position. When the light of the first light-emitting array 110 passes the contour of the low-beam cutoff line, it is partially blocked, thereby forming a low-beam type that meets regulations. Since the outline of the low beam cutoff line is set at the front focal plane and the optical axis position of the projection lens 150, a clear low beam cutoff line can be formed in the illumination area, and the position of the low beam illumination area close to the low beam cutoff line has high brightness.

遮光装置130还包括第二面132,第二面132在遮光装置130背离第一发光阵列110一侧,靠近第二发光阵列120设置,且第二面120直接与第一面131的近光截止线轮廓连接。The light-shielding device 130 further includes a second surface 132. The second surface 132 is disposed on the side of the light-shielding device 130 facing away from the first light-emitting array 110 and close to the second light-emitting array 120, and the second surface 120 is directly cut off from the low light of the first surface 131. Line contour connection.

光引导装置140设置在第二发光阵列120的出射光路上,即,至少部分属于第二发光阵列的发光单元的出射光必然经过光引导装置。其中,第二发光阵列120包括第一发光单元121,该第一发光单元121的出射光经光引导装置140引导至第二面132,该第二面132为反射面,将来自第一发光单元121的光二次反射,从而形成出射光。The light guiding device 140 is disposed on an output light path of the second light emitting array 120, that is, the light emitted from at least part of the light emitting units belonging to the second light emitting array necessarily passes through the light guiding device. The second light-emitting array 120 includes a first light-emitting unit 121, and the light emitted from the first light-emitting unit 121 is guided to the second surface 132 by the light guiding device 140. The second surface 132 is a reflective surface and will be from the first light-emitting unit. The light of 121 is reflected twice to form outgoing light.

在本实施例中,当车灯10为远光灯模式时,无论靠近第一发光阵列110的第一面131,还是靠近第二发光阵列120的第二面132,都有光束存在,而两者连接的位置构成近光截止线轮廓,因此使得近光截止线位置两侧都有直接的高亮度光束填充,从而实现了远光光束的高亮度 中心照明。In this embodiment, when the vehicle light 10 is in a high beam mode, there are light beams regardless of whether it is near the first surface 131 of the first light emitting array 110 or the second surface 132 of the second light emitting array 120, and two The positions where the users are connected form the low-beam cut-off line outline, so that both sides of the low-beam cut-off position are directly filled with high-intensity beams, thereby realizing the high-brightness center illumination of the high-beam beam.

在本实施例中,第一面131相对于光轴X平行设置。该结构有利于使第一发光阵列尽可能的靠近光轴,尤其地,本实施例中,第一面131设置在光轴X上,因此使得近光光束靠近截止线的部分具有较高的输出亮度,从而使得近光照明在中心区域更加明亮。假若使得第一面131向第一发光阵列110方向倾斜,那么将存在部分第一发光阵列的输出光被浪费在第一面131的斜面下方;假若使得第一面131向第二发光阵列120方向倾斜,那么会使得遮光装置130靠近基板160的部位尺寸过大,不利于光源整体体积缩小。当然,可以理解,在本实施例的变形实施例中,可以使得第一面131相对于第一发光阵列110倾斜(非垂直)设置,并使其“倒向”第二发光阵列。In this embodiment, the first surface 131 is disposed parallel to the optical axis X. This structure is beneficial to make the first light emitting array as close to the optical axis as possible. In particular, in this embodiment, the first surface 131 is disposed on the optical axis X, so that the portion of the low-beam beam near the cutoff line has a higher output. Brightness, which makes low-light illumination brighter in the central area. If the first surface 131 is tilted in the direction of the first light-emitting array 110, part of the output light of the first light-emitting array is wasted below the inclined surface of the first surface 131; if the first surface 131 is made to be in the direction of the second light-emitting array 120 Inclined, the size of the portion of the light shielding device 130 near the substrate 160 is too large, which is not conducive to reducing the overall volume of the light source. Of course, it can be understood that, in the modified embodiment of this embodiment, the first surface 131 may be arranged obliquely (non-vertically) with respect to the first light emitting array 110, and may be “inverted” to the second light emitting array.

与此同时,第二面132相对于X轴倾斜设置,第一面131与第二面132在截面上形成一个锐角结构。优选地,该锐角结构为45°角,有利于光线传播的光学设计。第二发光阵列120的第一发光单元121发出的光经第二面反射后,沿平行于光轴X的方向出射。可以理解,在本实施例的变形实施例中,也可以设置第二面的倾斜角度为其他角度,只要相应的改变光路即可。At the same time, the second surface 132 is disposed obliquely with respect to the X axis, and the first surface 131 and the second surface 132 form an acute angle structure in cross section. Preferably, the acute angle structure is at an angle of 45 °, which is beneficial to the optical design of light propagation. After the light emitted from the first light emitting unit 121 of the second light emitting array 120 is reflected on the second surface, it is emitted in a direction parallel to the optical axis X. It can be understood that, in the modified embodiment of this embodiment, the inclination angle of the second surface may also be set to another angle, as long as the light path is changed accordingly.

如图2所示,光引导装置140为一个棱镜结构,包括第一反射面141,第一发光单元121发出的光经第一反射面141反射至第二面132,而后出射。具体地,第一反射面141也呈45°放置,与第二面132相平行,使得第一发光单元121发出的光经两次90°偏折后沿原方向出射,实现了光路平移。As shown in FIG. 2, the light guiding device 140 has a prism structure and includes a first reflecting surface 141. The light emitted by the first light emitting unit 121 is reflected to the second surface 132 through the first reflecting surface 141 and then exits. Specifically, the first reflecting surface 141 is also placed at 45 °, and is parallel to the second surface 132, so that the light emitted by the first light emitting unit 121 is emitted in the original direction after being deflected twice by 90 °, thereby realizing the translation of the light path.

在本实施例中,第一发光阵列110和第二发光阵列120全部垂直于光轴X设置,使得第二发光阵列120的光即使不经过光引导装置140,仍能保证沿光轴X方向出射。例如第二发光阵列120的第二发光单元122,其出射光不经过光引导装置140,直接被投影镜头150收集。In this embodiment, the first light-emitting array 110 and the second light-emitting array 120 are all disposed perpendicular to the optical axis X, so that the light of the second light-emitting array 120 can be ensured to be emitted along the optical axis X even if it does not pass through the light guide device 140. . For example, the second light emitting unit 122 of the second light emitting array 120 does not pass through the light guiding device 140 and is directly collected by the projection lens 150.

虽然本实施例中的光引导装置140为全反射棱镜,第一反射面141为全反射棱镜的全反射面,本发明的光引导装置并不仅限于此。在其他变形实施方式中,光引导装置也可以为一个简单的反射镜片,通过固定件进行固定;或者,可以进一步的将全反射棱镜的结构复杂化,例如延 伸至第二发光阵列的出光面附近。Although the light guiding device 140 in this embodiment is a total reflection prism, and the first reflection surface 141 is a total reflection surface of the total reflection prism, the light guiding device of the present invention is not limited to this. In other modified embodiments, the light guiding device may also be a simple reflective lens, which is fixed by a fixing member; or, the structure of the total reflection prism may be further complicated, for example, it may extend to the vicinity of the light emitting surface of the second light emitting array. .

本实施例中,遮光装置130与光引导装置140是功能上相对独立的,两个器件彼此独立。可以理解,在本发明的变形实施例中,遮光装置和光引导装置也可以是一个整体。例如,遮光装置与光引导装置可以为透明结构,然后在第一面涂覆/蒸镀遮光面。例如,光引导装置可以包含两个全反射面,分别作为第一反射面和遮光装置的第二面,而遮光装置可以设计为中空结构,其第二面与光引导装置共用同一结构。In this embodiment, the light shielding device 130 and the light guiding device 140 are relatively independent in function, and the two devices are independent of each other. It can be understood that, in the modified embodiment of the present invention, the light shielding device and the light guiding device may also be integrated. For example, the light shielding device and the light guiding device may be transparent structures, and then the light shielding surface is coated / evaporated on the first surface. For example, the light guiding device may include two total reflection surfaces, which respectively serve as the first reflecting surface and the second surface of the light shielding device, and the light shielding device may be designed as a hollow structure, and the second surface shares the same structure as the light guiding device.

请参见图3,为本发明实施例二的结构示意图。车灯20包括第一发光阵列210、第二发光阵列220、遮光装置230、光引导装置240、投影镜头250和基板260。第一发光阵列210和第二发光阵列220发出的光经遮光装置230整形后,被投影镜头250收集后投射,从而在远处形成车灯照明光斑。Please refer to FIG. 3, which is a schematic structural diagram of a second embodiment of the present invention. The vehicle light 20 includes a first light emitting array 210, a second light emitting array 220, a light shielding device 230, a light guiding device 240, a projection lens 250, and a substrate 260. The light emitted by the first light-emitting array 210 and the second light-emitting array 220 is shaped by the shading device 230, collected by the projection lens 250, and projected, thereby forming a light spot of a vehicle light at a distance.

与图2所示实施例不同的是,本实施例的光引导装置240包括彼此平行设置的反射面241、242、243,第二发光阵列220包括与反射面241、242、243一一对应的多组发光单元221、222、223(每组发光单元可以包括一个或多个发光单元),各组发光单元分别朝向其对应的反射面发射光束,被反射后经与该反射面相邻的反射面二次反射后形成出射光,例如其中发光单元组223发出的光经反射面243反射后,再经过与反射面243相邻的反射面242反射,然后形成出射光。对于第一发光单元221来说,经反射面241反射后,然后经过相邻的遮光装置240的第二面(也是个反射面)反射,然后出射。Different from the embodiment shown in FIG. 2, the light guiding device 240 in this embodiment includes reflective surfaces 241, 242, and 243 disposed in parallel to each other, and the second light-emitting array 220 includes one-to-one correspondence with the reflective surfaces 241, 242, and 243. Multiple groups of light-emitting units 221, 222, 223 (each group of light-emitting units may include one or more light-emitting units), each group of light-emitting units respectively emits a light beam toward its corresponding reflecting surface, and is reflected by the reflection adjacent to the reflecting surface After the surface is reflected twice, the emitted light is formed. For example, the light emitted by the light emitting unit group 223 is reflected by the reflective surface 243 and then reflected by the reflective surface 242 adjacent to the reflective surface 243 to form the emitted light. For the first light emitting unit 221, after being reflected by the reflective surface 241, it is reflected by the second surface (also a reflective surface) of the adjacent light shielding device 240, and then emitted.

本实施例的技术方案将第二发光阵列220的出射光整体向遮光装置230的近光截止线轮廓平移,而且经过两次反射过程,第二发光阵列220发出的光已经实现了光斑扩大,能够填满光引导装置240的出射面,即使将该出射面设置在前焦面F,也能够使得投射出去的远光照明无明暗条纹。The technical solution of this embodiment translates the entire output light of the second light-emitting array 220 toward the low-light cutoff line profile of the light-shielding device 230, and after two reflection processes, the light emitted by the second light-emitting array 220 has achieved a light spot expansion, which can Even if the exit surface of the light guiding device 240 is filled up, even if the exit surface is set to the front focal plane F, the projected high-beam illumination can be free from light and dark stripes.

本实施例的光引导装置240相当于图2中的光引导装置140的复数扩展,可以通过拼接多个全反射棱镜实现。可以理解,光引导装置240的结构也可以替换为平行反射镜阵列的实现方式,然后通过固定支架将其固定在第二发光阵列的出射光路径上。The light guiding device 240 in this embodiment is equivalent to the complex expansion of the light guiding device 140 in FIG. 2, and can be implemented by splicing multiple total reflection prisms. It can be understood that the structure of the light guiding device 240 can also be replaced with an implementation manner of the parallel mirror array, and then fixed on the exiting light path of the second light emitting array through a fixing bracket.

为进一步理解车灯的结构,如图4所示,为图3所示实施例二的车灯的正视结构示意图,观察方向为沿着X轴并逆着光路的方向。图中包括第一发光阵列210、第二发光阵列220、遮光装置230和光引导装置240。其中第二发光阵列220被光引导装置遮挡,因此用虚线表示。In order to further understand the structure of the vehicle lamp, as shown in FIG. 4, it is a schematic diagram of the front structure of the vehicle lamp of the second embodiment shown in FIG. 3. The viewing direction is along the X axis and the direction opposite to the optical path. The figure includes a first light emitting array 210, a second light emitting array 220, a light shielding device 230, and a light guiding device 240. The second light-emitting array 220 is blocked by the light guiding device, so it is indicated by a dotted line.

发明人在该车灯结构下进行了仿真模拟,结果见图5A和图5B。其中图5A对应近光分布情况,图5B对应远光分布情况。可以看出,在光斑的中心区域,当车灯出射近光时,能够形成非常清晰的近光截止线图案,当车灯出射远光时,近光截止线部分被冲淡,不易分辨出来。The inventors performed a simulation under the lamp structure, and the results are shown in Figs. 5A and 5B. FIG. 5A corresponds to the distribution of the low beam, and FIG. 5B corresponds to the distribution of the high beam. It can be seen that in the central area of the light spot, when the headlights emit low beams, a very clear low-beam cutoff line pattern can be formed. When the headlights emit high beams, the low-beam cutoff part is diluted and difficult to distinguish.

本实施例二的其他元件的描述,可以参考实施例一中的相应元件的描述,此次不再赘述。For descriptions of other elements in the second embodiment, reference may be made to the descriptions of the corresponding elements in the first embodiment, which will not be repeated here.

以上各实施例中,第一发光单元作为直接出射到遮光装置的第二面的光的光源,都是沿着出射光平行于光轴X的方向设置的,这样有利于第一发光单元与第二发光阵列、第一发光阵列的紧凑型设计。可以理解,该第一发光单元也可以独立的设置在其他位置,只要使得光引导装置将第一发光单元的光引导至遮光装置的第二面,使其能够进入出射光路即可。In the above embodiments, the first light emitting unit, as a light source that directly emits light to the second surface of the light shielding device, is disposed along a direction in which the emitted light is parallel to the optical axis X, which is beneficial to the first light emitting unit and the first light emitting unit. Compact design with two light emitting arrays and first light emitting array. It can be understood that the first light-emitting unit can also be independently disposed at other positions, as long as the light guiding device guides the light of the first light-emitting unit to the second surface of the light-shielding device so that it can enter the exiting light path.

请参见图6,为本发明实施例三的结构示意图。车灯30包括第一发光阵列310、第二发光阵列320、遮光装置330、光引导装置340和投影镜头350。第一发光阵列310和第二发光阵列320发出的光经遮光装置330整形后,被投影镜头350收集后投射,从而在远处形成车灯照明光斑。其中,第二发光阵列320包括一第一发光单元321,第一发光单元321发出的光经管光引导装置340引导至遮光装置330的第二面332,而后被反射,朝向投影镜头350出射。Please refer to FIG. 6, which is a schematic structural diagram of a third embodiment of the present invention. The vehicle light 30 includes a first light emitting array 310, a second light emitting array 320, a light shielding device 330, a light guiding device 340, and a projection lens 350. The light emitted by the first light-emitting array 310 and the second light-emitting array 320 is shaped by the light shielding device 330, collected by the projection lens 350, and projected, thereby forming a lighting spot of a vehicle light at a distance. The second light-emitting array 320 includes a first light-emitting unit 321, and the light emitted by the first light-emitting unit 321 is guided to the second surface 332 of the light-shielding device 330 through the tube light guiding device 340, and then is reflected and emitted toward the projection lens 350.

与上述各实施例的不同点在于,本实施例中,第一发光单元321的发光面朝向遮光装置的第二面发光。该技术方案将第一发光单元321与第二发光阵列320的其他发光单元独立出来,能够独立的设置高亮度的第一发光单元321,降低了发光单元的集成难度,并提高远光照明的中心光斑亮度。The difference from the above embodiments is that, in this embodiment, the light emitting surface of the first light emitting unit 321 emits light toward the second surface of the light shielding device. This technical solution separates the first light-emitting unit 321 from other light-emitting units of the second light-emitting array 320, and can independently set a high-brightness first light-emitting unit 321, which reduces the integration difficulty of the light-emitting unit and improves the center of high-beam lighting. Spot brightness.

光引导装置340为一个透镜,直接将第一发光单元321的光收集引导至遮光装置330的第二面332,而第二发光阵列320的其他发光单元 沿平行于投影镜头350的光轴X方向发光,直接被投影镜头350收集。The light guiding device 340 is a lens that directly collects and guides light from the first light emitting unit 321 to the second surface 332 of the light shielding device 330, and other light emitting units of the second light emitting array 320 are parallel to the optical axis X of the projection lens 350. The light is directly collected by the projection lens 350.

该实施方式中,恰好第二面332呈倾斜设置,将第一发光单元321的光反射至平行于其他发光单元的光出射。In this embodiment, just the second surface 332 is disposed obliquely, and reflects the light from the first light emitting unit 321 to the light that is parallel to the other light emitting units and exits.

本实施例的其他元件的描述,可以参考上述各实施例中的相应元件的描述,此次不再赘述。For descriptions of other elements in this embodiment, reference may be made to descriptions of corresponding elements in the foregoing embodiments, and details are not described again.

以上列举的各个实施方式中,第一发光子阵列与第二发光子阵列都是LED阵列,LED阵列通过相应的电路元件控制,能够很容易实现单个发光元件的开关控制和亮度控制,而且可以通过LED单元的图案摆放,可以很容易实现对车灯照明图案。发明人进一步研究发现,可以将光源类型进一步拓展,请参见如下实施方式。In each of the above-mentioned embodiments, the first light-emitting sub-array and the second light-emitting sub-array are both LED arrays. The LED arrays are controlled by corresponding circuit elements, which can easily realize the switching control and brightness control of a single light-emitting element. The pattern placement of the LED unit makes it easy to realize the lighting pattern for the car lights. The inventor's further research found that the type of light source can be further expanded, please refer to the following embodiments.

请参见图7,为本发明实施例四的结构示意图。车灯40包括第一发光阵列410、第二发光阵列420、遮光装置430、光引导装置440、投影镜头450和基板460。第一发光阵列410和第二发光阵列420发出的光经遮光装置430整形后,被投影镜头450收集后投射,从而在远处形成车灯照明光斑。Please refer to FIG. 7, which is a schematic structural diagram of a fourth embodiment of the present invention. The vehicle light 40 includes a first light emitting array 410, a second light emitting array 420, a light shielding device 430, a light guiding device 440, a projection lens 450, and a substrate 460. The light emitted by the first light-emitting array 410 and the second light-emitting array 420 is shaped by the light shielding device 430, collected by the projection lens 450, and then projected, thereby forming a lighting spot of a vehicle light at a distance.

与上述实施例不同的是,本实施例中,第二发光阵列420的第一发光单元421为波长转换元件,而且车灯40还包括一与波长转换元件421对应的激发光源470,用于远程激发。Different from the above embodiment, in this embodiment, the first light emitting unit 421 of the second light emitting array 420 is a wavelength conversion element, and the lamp 40 further includes an excitation light source 470 corresponding to the wavelength conversion element 421 for remote excitation.

具体地,本实施例中,激发光源470为激光光源,能够出射发散角度小、光功率密度高的激光激发光,该激发光穿过基板460上的通孔461,从波长转换元件421的背面入射,被波长转换元件421吸收和散射后从正面出射,被光引导装置440引导至遮光装置430的第二面,进而被投影镜头收集。Specifically, in this embodiment, the excitation light source 470 is a laser light source, and can emit laser excitation light with a small divergence angle and high optical power density. The excitation light passes through the through-hole 461 on the substrate 460 and passes from the back of the wavelength conversion element 421. Incident light is absorbed and scattered by the wavelength conversion element 421 and exits from the front, is guided by the light guide device 440 to the second surface of the light shielding device 430, and is collected by the projection lens.

本实施例中的波长转换元件421为透射式技术方案,在变形实施例中,激发方式也可以为反射式,即波长转换元件背面设置反射结构,使得激光和受激光都从同一个面入射和出射。需要通过设置光学元件将激发光引导至波长转换元件的表面即可。该类技术方案为常规手段,此次不再赘述。The wavelength conversion element 421 in this embodiment is a transmissive technical solution. In a modified embodiment, the excitation method may also be a reflection type, that is, a reflective structure is provided on the back of the wavelength conversion element, so that both the laser light and the laser light are incident from the same surface. Shoot out. It is only necessary to guide the excitation light to the surface of the wavelength conversion element by providing an optical element. This type of technical solution is a conventional method and will not be repeated here.

激光激发波长转换元件能够相对于LED出射能量密度更高的光,实现更高亮度和/或更低能耗。通过控制激发光源的开关能够控制波长转换 元件的亮灭。本实施例的第一发光单元采用波长转换元件,能够提高远光照明的中心光斑亮度,获得更远的照射距离。The laser-excitation wavelength conversion element can emit light with higher energy density relative to the LED, achieving higher brightness and / or lower energy consumption. The on / off of the wavelength conversion element can be controlled by controlling the switch of the excitation light source. The first light-emitting unit in this embodiment uses a wavelength conversion element, which can increase the central spot brightness of high-beam illumination and obtain a longer irradiation distance.

本实施例的其他元件的描述,可以参考上述各实施例中的相应元件的描述,此次不再赘述。For descriptions of other elements in this embodiment, reference may be made to descriptions of corresponding elements in the foregoing embodiments, and details are not described again.

可以理解,也可以将上述图6对应实施例的第一发光单元321替换为激光激发荧光的技术方案,此处不再赘述。It can be understood that the first light-emitting unit 321 of the foregoing embodiment corresponding to FIG. 6 may also be replaced with the technical solution of laser-excited fluorescence, and details are not described herein again.

上述实施方式描述中,纯LED阵列的光源方案与激光荧光混合LED的光源方案各有优点,其中纯LED阵列的光源技术方案技术成熟、成本低,激光荧光混合LED的光源技术方案能够获得更高的亮度、更远的照射距离和更优的能效,在不同的应用场景、成本设计空间需综合选择技术方案。In the description of the foregoing embodiments, the light source solution of the pure LED array and the light source solution of the laser fluorescent mixed LED each have advantages. The technical solution of the light source of the pure LED array is mature in technology and low in cost. The light source technical solution of the laser fluorescent hybrid LED can obtain higher Brightness, longer irradiation distance and better energy efficiency, technical solutions need to be comprehensively selected in different application scenarios and cost design spaces.

本发明的车灯进一步还包括灯罩、控制电路板等常规结构,未在附图中展示,该部分采用本领域通用技术,此次不再赘述。The vehicle lamp of the present invention further includes conventional structures such as a lampshade, a control circuit board, and the like, which are not shown in the accompanying drawings. This part adopts the common technology in the art, and will not be repeated here.

本说明书中各个实施例采用递进的方式描述,每个实施例重点说明的都是与其他实施例的不同之处,各个实施例之间相同相似部分互相参见即可。The embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts between the embodiments, refer to each other.

以上所述仅为本发明的实施方式,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。The above description is only an embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technologies The same applies to the fields of patent protection of the present invention.

Claims (10)

  1. 一种车灯,其特征在于,包括:A vehicle light, comprising:
    第一发光阵列和第二发光阵列,所述第二发光阵列包括第一发光单元,当所述第一发光阵列单独开启时,所述车灯出射近光光束,当所述第一发光阵列与所述第二发光阵列同时开启时,所述车灯出射远光光束;A first light-emitting array and a second light-emitting array, wherein the second light-emitting array includes a first light-emitting unit; when the first light-emitting array is turned on separately, the car light emits a low-beam light beam; When the second light emitting array is turned on at the same time, the vehicle lamp emits a high beam;
    投影镜头,设置在所述第一发光阵列与所述第二发光阵列的出射光路上,所述第一发光阵列和所述第二发光阵列与所述投影镜头的距离大于所述投影镜头的焦距;A projection lens is disposed on the exit light path of the first and second light-emitting arrays, and the distance between the first and second light-emitting arrays and the projection lens is greater than the focal length of the projection lens ;
    遮光装置,设置在所述第一发光阵列与所述第二发光阵列之间,包括第一面和第二面,所述第一面靠近所述第一发光阵列设置,所述第二面靠近所述第二发光装置设置,所述第一面为遮光面,包括设置于所述投影镜头的前焦面和光轴上的近光截止线轮廓,所述第二面为反射面且与所述近光截止线轮廓连接;The light-shielding device is disposed between the first light-emitting array and the second light-emitting array, and includes a first surface and a second surface. The first surface is disposed close to the first light-emitting array and the second surface is close to the first light-emitting array. The second light-emitting device is provided, the first surface is a light-shielding surface, and includes a low-beam cut-off line profile disposed on a front focal plane and an optical axis of the projection lens, and the second surface is a reflective surface and is in contact with the Low beam cutoff line contour connection;
    光引导装置,设置在所述第二发光阵列的出射光路上,用于将所述第一发光单元发出的光引导至所述第二面,该光经所述第二面反射后形成出射光。A light guiding device is disposed on an outgoing light path of the second light emitting array, and is configured to guide light emitted by the first light emitting unit to the second surface, and the light is reflected by the second surface to form outgoing light. .
  2. 根据权利要求1所述的车灯,其特征在于,所述第二面相对于所述投影镜头的光轴倾斜设置,所述第一面相对于所述投影镜头的光轴平行设置。The vehicle lamp according to claim 1, wherein the second surface is disposed obliquely with respect to an optical axis of the projection lens, and the first surface is disposed parallel to an optical axis of the projection lens.
  3. 根据权利要求2所述的车灯,其特征在于,所述第一发光单元发出的光经所述第二面反射后,主光轴与所述投影镜头的光轴平行。The vehicle lamp according to claim 2, wherein after the light emitted by the first light-emitting unit is reflected by the second surface, a main optical axis is parallel to an optical axis of the projection lens.
  4. 根据权利要求1-3中任一项所述的车灯,其特征在于,所述光引导装置包括第一反射面,所述第一发光单元发出的光经所述第一反射面反射至所述第二面。The vehicle lamp according to any one of claims 1 to 3, wherein the light guiding device comprises a first reflecting surface, and light emitted by the first light emitting unit is reflected to the light source through the first reflecting surface. Mentioned the second side.
  5. 根据权利要求4所述的车灯,其特征在于,所述第一反射面为全反射棱镜的全反射面。The vehicle lamp according to claim 4, wherein the first reflection surface is a total reflection surface of a total reflection prism.
  6. 根据权利要求4中任一项所述的车灯,其特征在于,所述光引导装置包括彼此平行设置的多个反射面,所述第二发光阵列包括与所述多个反射面一一对应的多组发光单元,各组发光单元分别朝向其对应的 反射面发射光束,被反射后经与该反射面相邻的反射面二次反射后形成出射光。The vehicle lamp according to claim 4, wherein the light guide device includes a plurality of reflective surfaces disposed in parallel to each other, and the second light emitting array includes a one-to-one correspondence with the plurality of reflective surfaces. Each group of light-emitting units emits a light beam toward its corresponding reflection surface, and after being reflected, it is reflected by the reflection surface adjacent to the reflection surface to form reflected light.
  7. 根据权利要求1-3中任一项所述的车灯,其特征在于,所述第一发光单元的发光面朝向所述第二面发光。The vehicle lamp according to any one of claims 1-3, wherein a light-emitting surface of the first light-emitting unit emits light toward the second surface.
  8. 根据权利要求1-3中任一项所述的车灯,其特征在于,所述第一发光阵列与所述第二发光阵列为LED阵列,所述第一发光阵列与所述第二发光阵列的出光面平行于所述投影镜头的前焦面。The vehicle light according to any one of claims 1-3, wherein the first light emitting array and the second light emitting array are LED arrays, and the first light emitting array and the second light emitting array The light emitting surface is parallel to the front focal plane of the projection lens.
  9. 根据权利要求1-3中任一项所述的车灯,其特征在于,所述第一发光阵列和/或所述第二发光阵列包括波长转换元件,所述车灯还包括与所述波长转换元件对应的激发光源,该激发光源用于远程激发所述波长转换元件。The vehicle light according to any one of claims 1-3, wherein the first light-emitting array and / or the second light-emitting array include a wavelength conversion element, and the vehicle light further includes a wavelength An excitation light source corresponding to the conversion element, and the excitation light source is used to remotely excite the wavelength conversion element.
  10. 根据权利要求9所述的车灯,其特征在于,所述第一发光单元为波长转换元件。The vehicle lamp according to claim 9, wherein the first light emitting unit is a wavelength conversion element.
PCT/CN2019/100475 2018-09-14 2019-08-14 一种车灯 WO2020052397A1 (zh)

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CN105588061A (zh) * 2016-02-29 2016-05-18 上海小糸车灯有限公司 汽车前照灯近远光一体发光二极管pes单元

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