WO2009065286A1 - Lampe de type projecteur pour véhicule - Google Patents

Lampe de type projecteur pour véhicule Download PDF

Info

Publication number
WO2009065286A1
WO2009065286A1 PCT/CN2008/000975 CN2008000975W WO2009065286A1 WO 2009065286 A1 WO2009065286 A1 WO 2009065286A1 CN 2008000975 W CN2008000975 W CN 2008000975W WO 2009065286 A1 WO2009065286 A1 WO 2009065286A1
Authority
WO
WIPO (PCT)
Prior art keywords
focus
curved reflector
movable
light
convex lens
Prior art date
Application number
PCT/CN2008/000975
Other languages
English (en)
French (fr)
Inventor
Shaozhen Sun
Original Assignee
Shaozhen Sun
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaozhen Sun filed Critical Shaozhen Sun
Publication of WO2009065286A1 publication Critical patent/WO2009065286A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges

Definitions

  • the invention relates to a vehicle lamp, in particular to a vehicular projection lamp capable of realizing high beam and low beam switching.
  • the vehicular projection lamp of the present invention can be used as a headlight of a vehicle.
  • the headlights of a vehicle generally have a high beam and low beam illumination function, and have switching devices for achieving high beam and low beam switching, but the structure of the switching device is very complicated.
  • the conventional vehicle lamp includes a curved reflector, a light source installed in the curved reflector, and a convex lens disposed at the front of the curved reflector, in order to form two different illumination beams of high beam (high light) and low beam (low light). It is necessary to provide a switching device for switching between high beam and low beam between the convex lens of the headlight and the curved reflector, but how to obtain a good light distribution shape with a simple and reliable structure is a consideration. problem. Summary of the invention
  • a vehicular projection lamp comprising: a light source; a curved reflector for reflecting a light beam emitted from the light source, the focus of the curved equation of the curved reflector being a first focus; a convex lens at an open end of the front surface of the curved reflector; a switching device, the switching device is disposed inside the curved reflector and located between the convex lens and the light source, and includes an open position and a closed position Moving the light shielding sheet to realize switching between high beam and low beam; wherein, the light emitting point of the light source is located on the first focus, and the light beam emitted by the light source is reflected by the curved reflector and then focused to form a second focus a focus of the convex lens is located at a second focus of the curved reflector, and the movable light shielding sheet is disposed on an optical path of the light beam reflected from a lower portion of the curved reflector to an upper portion of the convex lens
  • the invention has the advantages that it is advantageous to obtain a good light distribution shape: the light beam emitted by the light source is reflected by the curved reflector to reach the convex lens, and the former part of the light is blocked by the movable light blocking piece, thereby forming a clear cut-off line, that is, a low light ( Low beam lights) .
  • the movable light blocking piece is displaced by the operation of the near and far light switching device, and part of the light source that is blocked is released to achieve the effect of the high light (high beam).
  • the movable louver is located at a lower portion of a line between the first focus and the second focus.
  • the switching device further includes: a supporting device mounted on an inner side of the curved reflector; and a driving device coupled to the supporting device and configured The movable louver is driven to switch to the open position and the closed position, and a partial light beam from the curved reflector to the second focus is blocked in the open position to implement a low beam.
  • the driving device includes: an electromagnetic coil disposed on the supporting device through an outer casing thereof; and a push rod, a magnetic field of one end of the push rod generated in the electromagnetic coil The lower end is operatively inserted into the coil, and the other end is coupled to the movable visor to drive the movable visor to switch to the snoring position and the closed position.
  • the driving device further includes: a connecting portion configured to combine the movable visor with the other end of the push rod to make the movable portion
  • the visor is pivotally rotated between the open position and the closed position.
  • the connecting portion includes: two first connecting ends extending in a longitudinal direction thereof; and a second connecting end extending laterally between the two insertion ends, the second connecting end being combined To the other end of the push rod.
  • the movable visor is pivotally coupled to the support device about at least one fulcrum, and the two first connection ends of the connection portion are pivotable in a manner to have torque with the at least one fulcrum Bonded to the movable visor.
  • the movable light blocking sheet is closer to the second focal point with respect to the first focus.
  • the curved reflector is a part of an elliptical sphere.
  • the driver presses the power change switch, and the coil of the electromagnetic drive is energized, so that the magnetic core push rod is affected by the magnetic energy generated by the coil, so that it is adsorbed and retracted, and at the same time, the connection portion is toggled.
  • the movable light blocking piece is folded along the pin shaft. At this time, the movable light blocking piece is no longer blocked, and the beam of the curved reflector is blocked by the high beam blocking piece to realize the switching from the low beam to the high beam. .
  • the driver When the high beam is not required, the driver resets the power supply, the coil of the electromagnetic pusher is de-energized, and the magnetic core push rod moves outward under the action of the return spring, and at the same time, the connecting portion is moved to block the active light.
  • the sheet acts as a resetting action along the rotating shaft, and the movable light blocking sheet and the high beam blocking sheet together shield the light beam reflected by the reflecting cup to meet the light shape requirement of the low beam.
  • 1 is a perspective view, partly in section, of a projection lamp for a vehicle according to the present invention in a low beam state
  • 2 is a perspective view, partly in section, of the vehicle lamp according to the present invention in a high beam state
  • Figure 3 is a longitudinal cross-sectional view of a projection lamp for a vehicle according to the present invention.
  • Figure 4 is an exploded perspective view of a projection lamp for a vehicle according to the present invention.
  • Figure 5 is a schematic view showing the principle of emitting a high beam by the projection lamp for a vehicle according to the present invention
  • Fig. 6 is a schematic view showing the principle of emitting a low beam by the projection lamp for a vehicle according to the present invention. detailed description
  • a vehicular projection lamp includes: a light source 1 such as a xenon lamp; and a curved reflector 2 that reflects a light beam emitted from the light source 1, in an exemplary implementation
  • the curved reflector is a part of an elliptical sphere and has a front open end, the focus of the curve equation is a first focus
  • a convex lens 3 disposed at an open end of the front surface of the curved reflector 2
  • the switching device 10 is disposed inside the curved reflector 2 and between the convex lens 3 and the light source 1 and includes a movable light shielding sheet 5 having an open position and a closed position, in the open position A low beam is achieved and a high beam is achieved in the closed position.
  • the light-emitting point 11 of the light source 1 is located at a first focus of the curved reflector, and the light beam emitted by the light source 1 is reflected by the inner side of the curved reflector 2 to be focused to form a second focus.
  • the focal point of the convex lens 3 is located at the second focus 12 of the curved reflector 2, that is, the focal point of the convex lens 3 coincides with the second focus 12 of the curved reflector 2.
  • the movable light shielding sheet 5 is disposed on an optical path of the light beam reflected from a lower portion of the curved reflector 2 to an upper portion of the convex lens 3 to block the movable shutter 5 when the movable position is in the open position.
  • a lower portion of the curved reflector 2 reflects a partial light beam to an upper portion of the convex lens 3.
  • the 'movable light-shielding sheet 5 is located between the first focus (light-emitting point 11) and the second focus 12, and is located below the line connecting the first focus and the second focus 12, which is advantageous for The high beam (highlight) beam is lighted.
  • the movable visor 5 is closer to the second focus 12 relative to the first focus, which is advantageous for controlling the reflected beam of the high beam (high light) lamp of the reflector.
  • the movable visor 5 may be disposed on the upper portion of the curved reflector 2 between the second focus 12 and the convex lens 3 and above the line between the second focus 12 and the center of the convex lens 3. This also allows the movable shade in the open position to be shielded from the lower portion of the curved reflector 2 to the upper portion of the convex lens 3. Part of the beam.
  • the switching device 10 further includes: a supporting device 13 mounted on the inner side of the curved reflector 2; and a driving device 6 mounted on the supporting device and It is configured to drive the movable visor 5 to switch to the open position and the closed position, and to block a partial light beam from the curved reflector 2 to the second focus in the open position.
  • the drive unit 6 includes: an electromagnetic coil 61 disposed on the support unit 13 through its outer casing; and a push rod 62 operatively inserted into the coil 61.
  • the push rod 62 has an insertion end and a free end opposite to the insertion end, and the push rod 62 is inserted into the coil 61 at the insertion end by a magnetic field generated in the coil 61.
  • the front open end of the curved reflector 2 is provided with a plurality of first flanges 21 extending outwardly from the mouth end (shown in the drawings) Two) and a plurality of second flanges 22 (two are shown in the drawings).
  • Each of the second flanges 22 is provided with at least one threaded hole 221 through which a plurality of connecting members 16 such as bolts are mounted to the front surface of the curved reflector 2 for mounting the convex lens 3 for mounting the convex lens 3 unit.
  • the first flange 21 includes a recessed portion, and the recessed portion is provided with at least one threaded hole 221.
  • the support device 13 includes a mounting portion 131 that extends to both sides. The mounting portion 131 is joined to the recessed portion, and a pusher such as a bolt is fixed to fix the both, thereby mounting the main body portion of the support device 13 inside the curved reflector 2.
  • a pair of opposed lugs 14 are provided on the upper portion of the support device 13, and each of the lugs 14 is provided with a first pivot hole 141.
  • a pair of rotating mechanisms 52 extending in the same direction are provided at both ends of the lower portion of the movable shade 5.
  • a driving hole 521 located at an upper portion of the rotating mechanism 52 and a second pivoting hole 522 located at a lower side of the rotating mechanism 52 are provided, that is, a predetermined between the driving hole 521 and the second pivot hole 522 distance.
  • the second line between the axes of the two drive holes 521 and the second line between the axes of the two second pivot holes 522 are parallel to the major plane of the movable visor 5.
  • the first line and the second line are parallel and define a plane, and the plane has a predetermined angle with the main plane of the movable visor 5, and the angle can be set within a range of 40-50 degrees. It is preferably 45 degrees.
  • Two pin shafts 51 respectively pass through the first pivot hole 141 and the second pivot hole 522, and form two coaxial fulcrums, so that the movable visor 5 is pivotally mounted around the fulcrum On the support device 13.
  • the two pin shafts 51 are shown as two ends of a single arcuate structure having a certain elasticity.
  • the pin shafts 51 as the both ends of the arcuate structure can be inserted into the first pivot hole 141 from the inner sides of the opposite two first pivot holes 141 and the opposite two second pivot holes 522, respectively.
  • the second pivot hole 522 and because the elasticity of the arcuate structure itself does not disengage the pin shaft 51 from the first pivot hole 141 and the second pivot hole 522, thereby firmly pivoting the movable shade 5 Connected to the support device 13.
  • the two coaxial fulcrums are composed of 522, but the present invention is not limited thereto, and only one fulcrum may be provided. Similarly, three fulcrums can be set.
  • a high-beam light shielding sheet 4 extending from an upper portion of the supporting device 13 is provided at an upper portion of the supporting device 13.
  • a concave portion 41 is formed on the high-beam light shielding sheet 4, and the concave portion 41 has a shape and a size corresponding to the movable light shielding sheet 5, whereby the movable light shielding sheet 5 can compensate the shape of the concave opening 41 when in the open position, thereby
  • the lower portion blocks a partial light beam that is reflected from the inner side of the curved reflector 2 to the second focus 12, and narrows the light beam that has passed through the second focus 12 and is incident on the inner side of the convex lens 3.
  • the light beam emitted from the convex lens 3 is narrowed from above, so that the light beam cannot be irradiated to a distant place to achieve low beam illumination.
  • the connecting portion 7 includes: two first connecting ends 71 extending in the longitudinal direction thereof; and a second connecting end 72 extending laterally between the two insertion ends 71.
  • the two first connecting ends 71 are respectively inserted into the two driving holes 521. Since the driving holes 521 and the second pivot holes 522 have a predetermined distance, the first connecting end 71 is pivoted relative to the first shaft 71 by the pin 51.
  • the second connecting end 72 may be a fork-shaped structure, the two fork portions of which are respectively inserted into the annular groove 621 formed at the free end of the push rod 62. That is, the forked structure of the second connecting end 72 clamps the free end of the push rod 62 through the annular groove 621.
  • the second connecting end 72 may also be a single elongated structure.
  • an insertion hole is provided at the free end of the push rod 62, and the second connecting end 72 is inserted into the The hole is inserted to join the connecting portion 7 and the push rod 62.
  • a return spring 8 surrounding the push rod 62 is provided between the connecting portion 7 and the coil 61.
  • the driver presses the power change switch, the coil 61 of the drive unit 6 is energized, and the push rod 62 is attracted by the magnetic energy generated by the coil 61, thereby moving backward in the direction of the coil 61 (moving downward) ).
  • the push rod 62 drives the connecting portion 7 to move downward, and the connecting portion 7 drives the movable light shielding sheet 5 to rotate around the pin shaft 51 in the counterclockwise direction shown in FIG. 4, and the movable light shielding sheet 5 gradually leaves the supporting device 13.
  • the notch 41 and finally reaches the closed position in which the movable shade 5 and the recess 41 are perpendicular. At this time, as shown in Figs.
  • the movable louver 5 is folded in a folded shape along the pin 51, and the movable louver 5 no longer blocks the light beam reflected from the curved reflector 2 to the second focus.
  • the light beam reflected from the inside of the curved reflector 2 is blocked by the high-beam light shielding sheet 4, thereby switching from the low beam to the high beam.
  • the driver When it is not necessary to use the high beam, the driver resets the power change switch, the coil 61 of the drive unit 6 is de-energized, and the push rod 62 moves outward from the inside of the coil 61 by the return spring 8.
  • the connecting portion 7 is driven to move
  • the movable visor 5 rotates in the clockwise direction shown in FIG. 4 around the pin shaft 51, and the movable visor 5 gradually rotates toward the notch 41 on the supporting device 13, and finally reaches the position where the movable visor 5 and the notch 41 coincide. Open the location. At this time, as shown in FIGS.
  • the movable shade 5 is folded open along the pin 51, so that the movable shade 5 shields the light beam reflected from the curved reflector 2 to the second focus.
  • the light beam reflected from the inner side of the curved reflector 2 is shielded by the movable light shielding sheet 5 and the high beam light shielding sheet 4 to meet the light shape requirement of the low beam (low light), thereby realizing the high beam to the low beam. Switching.
  • the high beam shading 4 and the recess 41 may not be provided.
  • the movable visor 5 when the movable visor 5 is in the closed position, the light beam reflected from the curved reflector 2 is passed through the second focus, thereby achieving the high beam function; and in the open position, the movable visor 5 is occluded from the lower portion. A partial beam reflected from the curved reflector 2, thereby achieving a low beam function.
  • the present invention is not limited thereto.
  • the movable visor 5 can be vertically secured directly to the pusher 62.
  • the push rod 62 retracts or protrudes from the coil 61
  • the movable louver 5 is driven to move up and down, so that the movable louver 5 blocks or does not block part of the light beam reflected from the curved reflector 2 from the lower portion, thereby achieving near Light or high beam function.
  • the drive unit 6 may include a drive motor and the drive motor drives the rotation and up and down movement of the movable visor 5.

Landscapes

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

Description

车用投影灯 技术领域
本发明涉及一种车灯， 尤其是一种能实现远光和近光切换的车用投影灯。 本发明 的车用投影灯可用作车辆的车前灯。
背景技术
目前， 车辆的车前灯为一般具有远光和近光照射功能， 并且具有用于实现远光和 近光切换的切换装置， 但该切换装置的结构非常复杂。 传统的车用投影灯包括曲面反 射体、 安装在曲面反射体内的光源和设置在曲面反射体前部的凸透镜， 为了形成远光 (高灯） 和近光 （低灯） 两种不同的照射光束， 需要在车前灯的凸透镜和曲面反射体 之间设置用于切换远光和近光的切换装置， 但如何以简单而且动作可靠的结构获得良 好的配光光形， 则是一个需要考虑的问题。 发明内容
本发明的目的在于提供一种远光和近光配光光形良好的车用投影灯。
根据本发明的一个方面， 提供一种车用投影灯， 包括： 光源； 用于反射从所述光 源发射的光束的曲面反射体， 所述曲面反射体的曲线方程的焦点为第一焦点； 设置在 所述曲面反射体前部开口端的凸透镜； 切换装置， 所述切换装置设置在所述曲面反射 体的内侧并位于所述凸透镜和所述光源之间， 并包括具有打开位置和关闭位置的可移 动遮光片， 以实现远光和近光的切换； 其中， 所述光源的发光点位于所述第一焦点上， 由所述光源发射的光束通过所述曲面反射体反射后聚焦形成第二焦点， 所述凸透镜的 焦点位于所述曲面反射体的第二焦点处， 所述可移动遮光片设置在所述光束从所述曲 面反射体的下部反射到所述凸透镜的上部的光路上， 以在所述可移动遮光片位于所述 打开位置时遮挡从所述曲面反射体的下部反射到所述凸透镜的上部的部分光束。
本发明的优点在于有利于获得良好的配光光形： 光源发出的光束经过曲面反射体 反射到达凸透镜处前一部分光线被可移动挡光片挡住， 从而形成明显的截止线， 也就 是低灯 （近光灯） 。 通过远近光切换装置的运行使可移动挡光片位移， 被遮掉的部分 光源释放出来， 达到高灯 （远光灯） 的效果。
在上述车用投影灯中， 所述可移动遮光片位于第一焦点与第二焦点之间的连线的 下部。 在上述车用投影灯中， 所述切换装置进一步包括： 支撑装置， 所述支撑装置安装 在所述曲面反射体的内侧； 以及驱动装置， 所述驱动装置结合至所述支撑装置， 并被 构造成驱动所述可移动遮光片切换至所述打开位置和关闭位置， 并在所述打开位置遮 住从所述曲面反射体到达所述第二焦点的部分光束， 以实现近光灯。
在上述车用投影灯中， 所述驱动装置包括： 通过其外部壳体设置在所述支撑装置 上的电磁线圈； 以及推杆， 所述推杆的一端在所述电磁线圈内产生的磁场作用下可操 作地插入线圈内， 而另一端与所述可移动遮光片结合， 从而驱动所述可移动遮光片切 换至所述打幵位置和关闭位置。
在上述车用投影灯中， 所述驱动装置还包括： 连接部， 所述连接部被构造成将所 述可移动遮光片与所述推杆的所述另一端结合， 以使所述可移动遮光片在所述打开位 置和关闭位置之间枢轴式转动。 '
在上述车用投影灯中， 所述连接部包括： 沿其纵向方向延伸的两个第一连接端； 以及在两个插入端中间沿横向延伸的第二连接端， 所述第二连接端结合至所述推杆的 所述另一端。 所述可移动遮光片绕至少一个支点可枢转地结合在所述支撑装置上， 并 且所述连接部的所述两个第一连接端以与所述至少一个支点具有扭矩的方式可枢转地 结合至所述可移动遮光片。
在上述车用投影灯中， 所述可移动挡光片相对于所述第一焦点更靠近所述第二焦 点。
在上述车用投影灯中， 所述曲面反射体为椭圆形球体的一部分。
当需要使用远光灯时， 驾驶员按下电源变换开关， 电磁驱动器的线圈通电， 使磁 芯推杆因受线圈产生的磁能影响， 使之被吸附而后退， 同时也连带使连接部拨动可移 动挡光片沿销轴作折叠状的收起， 此时， 活动挡光片不再遮光， 曲面反射体的光束由 远光挡光片遮挡配光， 实现由近光向远光的切换。 当不需要使用远光灯时， 驾驶员将 电源变换幵关复位， 电磁推动器的线圈断电， 磁芯推杆在复位弹簧的作用下外移， 同 时也连带使连接部拨动活动挡光片沿转轴作作复位活动， 活动挡光片与远光挡光片一 起对反光杯反射的光束进行遮挡以符合近光的光形要求。 附图说明
本发明将参照附图来进一步详细说明， 其中：
图 1为根据本发明车用投影灯近光状态下的部分剖视的立体示意图; 图 2为根据本发明车用投影灯远光状态下的部分剖视的立体示意图；
图 3为根据本发明的本发明车用投影灯的纵向剖视图；
图 4为根据本发明的本发明车用投影灯的立体分解图；
图 5为根据本发明的本发明车用投影灯发射远光的原理示意图； 以及
图 6为根据本发明的本发明车用投影灯发射近光的原理示意图。 具体实施方式
下面结合附图并参照本发明的优选实施例， 本领域的技术人员能更好地理解本申 请的进一步的公开、 目的、 优点和方面， 所给出的这些附图和实施例只是为了说明的 目的。 需要说明的是， 各附图中相同的附图标记表示相同的部件。
参考图 1至图 4, 根据本发明的一种车用投影灯包括： 例如氙气灯之类的光源 1 ; 由于反射从所述光源 1 发射的光束的曲面反射体 2， 在一种示例性实施例中， 所述曲 面反射体为椭圆形球体的一部分并具有前部开口端， 其曲线方程的焦点为第一焦点； 设置在所述曲面反射体 2前部开口端的凸透镜 3 ; 切换装置 10， 所述切换装置 10设置 在所述曲面反射体 2的内侧并位于所述凸透镜 3和所述光源 1之间， 并包括具有打开 位置和关闭位置的可移动遮光片 5， 以在所述打开位置实现近光灯并在所述关闭位置 实现远光灯。
参见图 5和 6， 所述光源 1的发光点 11位于所述曲面反射体的第一焦点上， 由所 述光源 1发射的光束通过所述曲面反射体 2的内侧反射后聚焦形成第二焦点 12。 所述 凸透镜 3的焦点位于所述曲面反射体 2的第二焦点 12处， 也就是说， 所述凸透镜 3的 焦点与所述曲面反射体 2的第二焦点 12重合。所述可移动遮光片 5设置在所述光束从 所述曲面反射体 2的下部反射到所述凸透镜 3的上部的光路上， 以在所述可移动遮光 片 5位于所述打开位置时遮挡从所述曲面反射体 2的下部反射到所述凸透镜 3的上部 的部分光束。 在一种示例性实施例中， '可移动遮光片 5位于第一焦点 （发光点 11 ) 与 第二焦点 12之间，并位于第一焦点与第二焦点 12连线的下方，这样有利于对远光（高 灯） 光束进行配光。 在一种示例性实施例中， 可移动遮光片 5相对于第一焦点更靠近 第二焦点 12， 这样有利与控制反光杯的远光 （高光） 灯的反射光束。
可选择地，可移动遮光片 5也可设置在曲面反射体 2的上部并位于第二焦点 12和 凸透镜 3之间， 并位于第二焦点 12与凸透镜 3的中心之间的连线的上方， 这样也可以 使处于打开位置的可移动遮光片遮挡从曲面反射体 2的下部反射到凸透镜 3的上部的 部分光束。
在一种示例性实施例中， 切换装置 10进一步包括： 安装在所述曲面反射体 2的内 侧的支撑装置 13 ; 以及驱动装置 6, 所述驱动装置 6安装在所述支撑装置上， 并被构 造成驱动所述可移动遮光片 5切换至所述打开位置和关闭位置， 并在所述打开位置遮 住从所述曲面反射体 2到达所述第二焦点的部分光束。 更具体地， 所述驱动装置 6包 括： 通过其外部壳体设置在支撑装置 13上的电磁线圈 61 ; 以及推杆 62， 所述推杆 62 可操作地插入线圈 61 内。 具体而言， 推杆 62具有插入端和与所述插入端相对的自由 端， 在线圈 61内产生的磁场作用下推杆 62在插入端插入线圈 61内。
参见图 1、 2和 4， 在一种示例性实施例中， 曲面反射体 2的前部开口端设有从幵 口端向外延伸的多个第一凸缘 21 (附图中示出了两个）和多个第二凸缘 22 (附图中示 出了两个）。 每个第二凸缘 22设有至少一个螺纹孔 221， 多个诸如螺栓之类的连接件 16穿过所述螺紋孔 221将用于安装凸透镜 3的延长部 15安装到曲面反射体 2的前部。 第一凸缘 21上包括凹陷部， 凹陷部上设有至少一个螺紋孔 221。 支撑装置 13包括向 两侧延伸的安装部 131。 安装部 131接合至凹陷部上， 并推杆诸如螺栓之类的连接件 将二者固定， 从而将支撑装置 13的主体部分安装在曲面反射体 2的内侧。
参见图 4, 在支撑装置 13的上部设有一对相对的凸耳 14， 每个凸耳 14上都设有 第一枢转孔 141。 在所述可移动遮光片 5的下部两端设有向同一方向延伸的一对转动 机构 52。 在每个转动机构 52上， 设有位于转动机构 52上部的驱动孔 521以及位于转 动机构 52下侧的第二枢转孔 522， 即驱动孔 521和第二枢转孔 522之间具有预定的距 离。 两个驱动孔 521的轴线之间的第一连线和两个第二枢转孔 522的轴线之间的第二 连线都平行于可移动遮光片 5的主平面。 第一连线和第二连线平行并确定一个平面， 而且该平面与可移动遮光片 5的主平面之间具有预定的角度， 该角度可设定在 40— 50 度之间的范围内， 优选为 45度。 两个销轴 51分别穿过所述第一枢转孔 141和第二枢 转孔 522， 并形成两个同轴的支点， 从而使可移动遮光片 5绕所述支点可枢转地安装 在所述支撑装置 13上。 在一种示例性实施例中， 如图 4所示， 所示两个销轴 51为单 个弓形结构的两端， 该弓形结构具有一定的弹性。 这样， 可使作为所述弓形结构两端 的销轴 51分别从相对的两个所述第一枢转孔 141和相对的两个第二枢转孔 522的内侧 插入所述第一枢转孔 141 和第二枢转孔 522， 而且由于弓形结构自身的弹性而不会使 销轴 51从第一枢转孔 141和第二枢转孔 522脱离，从而牢固地将可移动遮光片 5枢转 地连接到支撑装置 13上。 虽然上面描述了由销轴 51、 第一枢转孔 141和第二枢转孔 522 组成的两个同轴支点， 但本发明并不局限于此， 也可以只设置一个支点。 同理， 也可以设置三个支点。
在支撑装置 13的上部设有从支撑装置 13的上部延伸形成的远光遮光片 4。 在远 光遮光片 4上形成凹部 41 , 该凹部 41的形状和大小与可移动遮光片 5相对应， 由此 使可移动遮光片 5在处于打开位置时可弥补凹口 41的形状，从而从下部遮挡从曲面反 射体 2的内侧反射到第二焦点 12的部分光束， 使经过第二焦点 12并入射到凸透镜 3 内侧的光束变窄。 这样， 参见图 6， 从凸透镜 3发出的光束从上方变窄， 使该光束不 能照射到较远的地方， 实现近光照射。
可移动遮光片 5和推杆 62的自由端通过连接部 7连接。 在一种示例性实施例中， 连接部 7包括： 沿其纵向方向延伸的两个第一连接端 71 ; 以及在两个插入端 71 中间 沿横向延伸的第二连接端 72。两个第一连接端 71分别插入两个驱动孔 521， 由于驱动 孔 521和第二枢转孔 522之间具有预定的距离， 这样第一连接端 71相对于由销轴 51、 第一枢转孔 141和第二枢转孔 522组成的两个同轴支点产生扭矩， 从而可以驱动可移 动遮光片 5枢转式地转动。 在一种实施例中， 第二连接端 72可以是一种叉形结构， 该 叉形结构的两个叉部分别插入形成在推杆 62的自由端的环形凹槽 621内。 也就是说， 第二连接端 72的叉形结构通过环形凹槽 621将推杆 62的自由端夹住。 在另一种实施 例中， 所述第二连接端 72也可以是单个细长结构， 与此相对应， 在推杆 62的自由端 设有插入孔， 通过将第二连接端 72插入所述插入孔， 而使连接部 7和推杆 62结合。 在一种实施例中， 在连接部 7和线圈 61之间设有环绕推杆 62的复位弹簧 8。
下面参考图 1、 图 2、 图 5和图 6描述实现远光和近光切换的操作过程。
当需要使用远光灯时， 驾驶员按下电源变换开关， 驱动装置 6的线圈 61通电， 推 杆 62由于受到线圈 61产生的磁能作用而被吸附， 从而向线圈 61的方向后退（向下移 动）。 同时， 推杆 62驱动连接部 7向下移动， 连接部 7随之驱动可移动遮光片 5环绕 销轴 51沿图 4所示的逆时针方向转动， 可移动遮光片 5逐渐离开支撑装置 13上的凹 口 41， 并最终达到可移动遮光片 5和凹口 41垂直的关闭位置。 此时， 如图 2和 5所 示， 可移动遮光片 5沿销轴 51呈折叠状的收起， 可移动遮光片 5不再遮档从曲面反射 体 2反射到第二焦点的光束。 这样， 从曲面反射体 2内侧反射的光束由远光遮光片 4 遮挡配光， 由此实现由近光向远光的切换。
当不需要使用远光灯时，驾驶员将电源变换开关复位，驱动装置 6的线圈 61断电， 推杆 62在复位弹簧 8的作用下从线圈 61内向外移动。 同时， 连接部 7随之驱动可移 动遮光片 5环绕销轴 51沿图 4所示的顺时针方向转动，可移动遮光片 5逐渐朝向支撑 装置 13上的凹口 41转动， 并最终达到可移动遮光片 5和凹口 41重合的打开位置。此 时， 如图 1和 6所示， 可移动遮光片 5沿销轴 51呈折叠状的打开， 从而使可移动遮光 片 5遮档从曲面反射体 2反射到第二焦点的光束。 这样， 从曲面反射体 2内侧反射的 光束由可移动遮光片 5和远光遮光片 4一起遮挡配光， 以符合近光 （低灯） 的光形要 求， 由此实现由远光向近光的切换。
在一可选的实施例中， 也可以不设置远光遮光片 4和凹口 41。 这样， 在可移动遮 光片 5处于关闭位置时， 从曲面反射体 2反射的光束都被通过第二焦点， 由此实现远 光灯功能； 而在打开位置时， 可移动遮光片 5从下部遮挡从曲面反射体 2反射的部分 光束， 由此实现近光灯功能。
虽然上面描述了可移动遮光片 5进行环绕销轴 51转动的实施例，但本发明并不局 限于此。在一可选的实施例中， 可将可移动遮光片 5垂直地直接固定在推杆 62上。这 样， 随着推杆 62退回或者伸出线圈 61， 驱动可移动遮光片 5上下移动， 从而使可移 动遮光片 5从下部遮挡或者不遮挡从曲面反射体 2反射的部分光束， 由此实现近光灯 或远光灯功能。
在另一可选的示例性实施例中， 驱动装置 6可以包括驱动电机， 并由驱动电机驱 动可移动遮光片 5的转动和上下移动。
尽管对本发明的典型实施例进行了说明， 但是显然普通技术人员可以理解， 在不 背离本发明的精神和原理的情况下可以进行改变， 其范围在权利要求书以及其等同物 中进行了限定。

Claims

1、 一种车用投影灯， 包括：
光源；
用于反射从所述光源发射的光束的曲面反射体， 所述曲面反射体的曲线方程的焦 点为第一焦点；
设置在所述曲面反射体前部开口端的凸透镜；
切换装置， 所述切换装置设置在所述曲面反射体的内侧并位于所述凸透镜和所述 光源之间， 并包括具有打幵位置和关闭位置的可移动遮光片；
其中， 所述光源的发光点位于所述第一焦点上， 由所述光源发射的光束通过所述 曲面反射体反射后聚焦形成第二焦点， 所述凸透镜的焦点位于所述曲面反射体的第二 焦点处， 所述可移动遮光片设置在所述光束从所述曲面反射体的下部反射到所述凸透 镜的上部的光路上， 以在所述可移动遮光片位于所述打开位置时遮挡从所述曲面反射 体的下部反射到所述凸透镜的上部的部分光束。
2、 根据权利要求 1所述的车用投影灯， 其特征在于： 所述可移动遮光片位于第一 焦点与第二焦点之间的连线的下部。
3、 根据权利要求 1所述的车用投影灯， 其特征在于： 所述切换装置进一步包括： 支撑装置， 所述支撑装置安装在所述曲面反射体的内侧； 以及
驱动装置， 所述驱动装置结合至所述支撑装置， 并被构造成驱动所述可移动遮光 片切换至所述打开位置和关闭位置， 并在所述打开位置遮住从所述曲面反射体到达所 述第二焦点的部分光束， 以实现近光灯。
4、 根据权利要求 1所述的车用投影灯， 其特征在于： 所述驱动装置包括： 通过其外部壳体设置在所述支撑装置上的电磁线圈； 以及
推杆，所述推杆的一端在所述电磁线圈内产生的磁场作用下可操作地插入线圈内， 而另一端与所述可移动遮光片结合， 从而驱动所述可移动遮光片切换至所述打开位置 和关闭位置。
5、 根据权利要求 4所述的车用投影灯， 其特征在于： 所述驱动装置还包括： 连接部，所述连接部被构造成将所述可移动遮光片与所述推杆的所述另一端结合， 以使所述可移动遮光片在所述打幵位置和关闭位置之间枢轴式转动。
6、 根据权利要求 5所述的车用投影灯， 其特征在于： 所述连接部包括： 沿其纵向方向延伸的两个第一连接端； 以及
在两个插入端中间沿横向延伸的第二连接端， 所述第二连接端结合至所述推杆的 所述另一端，
所述可移动遮光片绕至少一个支点可枢转地结合在所述支撑装置上， 并且所述连 接部的所述两个第一连接端以与所述至少一个支点具有扭矩的方式可枢转地结合至所 述可移动遮光片。
7、 根据权利要求 1一 6中的任一项所述的车用投影灯， 其特征在于： 所述可移动 挡光片相对于所述第一焦点更靠近所述第二焦点。
8、 根据权利要求 1一 6中的任一项所述的车用投影灯， 其特征在于： 所述曲面反 射体为椭圆形球体的一部分。
PCT/CN2008/000975 2007-11-22 2008-05-20 Lampe de type projecteur pour véhicule WO2009065286A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720060388.X 2007-11-22
CNU200720060388XU CN201145184Y (zh) 2007-11-22 2007-11-22 一种车用投影灯

Publications (1)

Publication Number Publication Date
WO2009065286A1 true WO2009065286A1 (fr) 2009-05-28

Family

ID=40082063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/000975 WO2009065286A1 (fr) 2007-11-22 2008-05-20 Lampe de type projecteur pour véhicule

Country Status (2)

Country Link
CN (1) CN201145184Y (zh)
WO (1) WO2009065286A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101614350B (zh) * 2009-04-09 2013-08-21 上海宝康电子控制工程有限公司 一种led路灯光学系统
CN102200245A (zh) * 2011-04-22 2011-09-28 梁威 远、近光二合一的led车用前大灯
CN102798069A (zh) * 2012-07-27 2012-11-28 鹤壁市恒通电气有限公司 四椭球面led投影汽车前照灯
CN104197258A (zh) * 2014-07-29 2014-12-10 江苏彤明高科汽车电器有限公司 一种抗振汽车前组合车灯
TWI651489B (zh) * 2018-01-29 2019-02-21 誠益光電科技股份有限公司 智慧頭燈
CN108800047A (zh) * 2018-08-21 2018-11-13 深圳市途向科技有限公司 一种汽车led远光灯
CN109442284B (zh) * 2018-11-05 2020-12-29 广东金源照明科技股份有限公司 一种出光角度可调的led灯具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857794A (en) * 1986-09-03 1989-08-15 Koito Seisakusho Co., Ltd. Single-filament headlamp unit capable of throwing both upper and lower beams
EP1201989A2 (de) * 2000-10-25 2002-05-02 Zizala Lichtsysteme GmbH Fahrzeugscheinwerfer
DE10225566A1 (de) * 2002-06-10 2004-03-04 Hella Kg Hueck & Co. Scheinwerfer für Fahrzeuge
CN2745788Y (zh) * 2004-09-22 2005-12-14 Aca实业公司 远近灯切换装置
CN2863556Y (zh) * 2005-11-01 2007-01-31 上海小糸车灯有限公司 车辆前照灯远近光切换装置
CN1928422A (zh) * 2005-09-09 2007-03-14 株式会社小糸制作所 车辆用前照灯

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4857794A (en) * 1986-09-03 1989-08-15 Koito Seisakusho Co., Ltd. Single-filament headlamp unit capable of throwing both upper and lower beams
EP1201989A2 (de) * 2000-10-25 2002-05-02 Zizala Lichtsysteme GmbH Fahrzeugscheinwerfer
DE10225566A1 (de) * 2002-06-10 2004-03-04 Hella Kg Hueck & Co. Scheinwerfer für Fahrzeuge
CN2745788Y (zh) * 2004-09-22 2005-12-14 Aca实业公司 远近灯切换装置
CN1928422A (zh) * 2005-09-09 2007-03-14 株式会社小糸制作所 车辆用前照灯
CN2863556Y (zh) * 2005-11-01 2007-01-31 上海小糸车灯有限公司 车辆前照灯远近光切换装置

Also Published As

Publication number Publication date
CN201145184Y (zh) 2008-11-05

Similar Documents

Publication Publication Date Title
WO2009065286A1 (fr) Lampe de type projecteur pour véhicule
US7370996B2 (en) Vehicle headlamp
US9086202B2 (en) Light module having an aperture with a resilient stop element
WO2017117871A1 (zh) 一种电机式光型变换驱动装置及其光型变换方法
JP2015069972A (ja) 多機能ｌｅｄヘッドランプ
US8827520B2 (en) Vehicle headlight
TWI651221B (zh) 車燈裝置及其遮板驅動模組
JP6147510B2 (ja) 車輌用前照灯
JP6011915B2 (ja) 車輌用前照灯
JP4690526B2 (ja) 自動車のための前照灯
CN201255337Y (zh) 车用投影灯
WO2018135615A1 (ja) 車両用灯具
TWI438107B (zh) Lights
TWM638026U (zh) 具有遠近燈切換結構的車燈
JP2011159560A (ja) プロジェクタ型前照灯及びシェード
JP2011082002A (ja) プロジェクタ型前照灯及びシェード装置
TW202208206A (zh) 遠近燈切換裝置
CN101585340A (zh) 车用投影灯
JP2018073776A (ja) 車両用灯具
TWI333040B (zh)
JP6918899B2 (ja) 車輌用灯具ユニット
TWI769014B (zh) 遠近燈切換裝置
JP7404480B2 (ja) 車輌用灯具ユニット
JP6619056B2 (ja) 車輌用灯具ユニット
JP6392821B2 (ja) 車輌用灯具ユニット

Legal Events

Date Code Title Description
DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08757323

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08757323

Country of ref document: EP

Kind code of ref document: A1