• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A lighting device for motor vehicles, having at least one light output element to produce a given light distribution, having at least one light source arranged at a distance from the light output element, having at least one optical fiber for connecting the light source to the light output element, where a plurality of light output elements are provided, and a light function selector is connected upstream for optional selection of the light output elements.
    公开号:US20010006466A1
    申请号:US09/732,936
    申请日:2000-12-11
    公开日:2001-07-05
    发明作者:Karsten Eichhorn
    申请人:Hella KGAA Huek and Co；
    IPC主号:B60Q1-0011
    专利说明:
    [0001] 1. Field of the Invention [0001]
    [0002] The present invention relates to a lighting device for motor vehicles having at least one light output element to produce a predetermined light distribution, having at least one light source arranged at a distance from the light output element, with at least one optical guide for connecting the light source to the light output element. [0002]
    [0003] 2. Related Art European Patent document 678 699 B1 describes a lighting device for motor vehicles, having light output elements designed accordingly to produce a predetermined light distribution, e.g., a low beam function, a high beam function or a fog light function, these light output elements being arranged in the edge area of the outer shell of an automobile. The light output element is connected by an optical fiber to a light source arranged at a distance. One disadvantage of the known lighting device is that due to an unambiguous correlation of the light output element with the optical guide or the light source, the resulting light function is determined definitively. [0003]
    [0004] German Patent Application 43 13 914 A1 describes a lighting device for motor vehicles, where several light output elements are provided to produce different light distributions. The light output elements are each connected optically by optical guides to a common light source or to the respective assigned light sources. To produce a predetermined light distribution, which may be independent of the ambient conditions of the vehicle, the known lighting device has individual light output elements connected or rendered ineffective by blanking them out. However, it is a disadvantage of the known lighting device that the total optical path between the light source and the light output element can no longer be utilized due to blanking out. [0004] SUMMARY OF THE INVENTION
    [0005] An object of the present invention is to improve upon a lighting device for motor vehicles such that producing the light functions can be made in a more flexible and simple manner. [0005]
    [0006] This object and other objects of the present invention are achieved by providing a plurality of light output elements with an upstream light function selector for optional selection of the light output elements. [0006]
    [0007] The special advantage of the lighting device according to this invention is that a light function selector is provided, permitting optical separation of a light output element from a light source arranged at a distance. For example, a light source can be connected to various and/or multiple light output elements. In addition, a light output element can be connected to multiple light sources at the same time or in succession, so that in the event of failure of a first light source, it can be replaced by a second light source to maintain the predefined light function. [0007]
    [0008] In particular, according to the present invention, the light output elements are not controlled by turning the light sources on and off, but instead they are controlled by a light function selector, which allows switching the light signal of one or more light sources to a predefined light output element. This yields an increased flexibility in guiding light signals. In addition, the operating reliability of the lighting device can be improved through the present invention. Furthermore, the tolerance for the design of the lighting device, which is preferably in the form of a headlight, can be increased. [0008]
    [0009] According to a preferred embodiment of the present invention, the light function selector is arranged in the area of a light input unit. Thus, the light signal is switched in an area near the light source. The light output element can be connected rigidly to an optical guide assigned to it. The space required in the outlet area (headlight area) of the light bundle can be reduced in this way. [0009]
    [0010] Additionally, according to the preferred embodiment of the present invention, for each light source the light input unit has a light-deflecting element that is designed to be pivotable. The light-deflecting unit deflects light emitted by a light source in the direction of a given optical guide. This advantageously yields a simple design of the light input unit, which permits reliable light injection into the respective optical guide. [0010]
    [0011] According to another embodiment of this invention, the light-deflecting unit is designed as a reflector which can be brought into at least two light input positions. The reflector advantageously permits a relatively high luminous flux, which can be input into the respective optical guide. [0011]
    [0012] According to yet another embodiment of this invention, a light function is created by combining at least two light output elements, each generating a segmented basic light distribution. By adding standardized basic light distributions, it is advantageously possible to produce a plurality of light functions, e.g., a high beam function, a low beam function and a fog light function. Additional light functions can be generated easily through this “segmentation” of the light distribution as a function of ambient conditions. For example, additional light distributions can be created depending on the driving conditions, thereby generating an optimally coordinated light function. Therefore, the light functions can be adapted to ambient conditions automatically and continuously as a function of the amount of darkness in the environment by cross-fading the light distributions. In addition, it is also possible to automatically activate additional light functions in accordance with sensor signals. For example, when fog is detected, the fog light may be turned on automatically or the lights switched to low beam. [0012]
    [0013] Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description. [0013] BRIEF DESCRIPTION OF THE DRAWINGS
    [0014] The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein: [0014]
    [0015] FIG. 1 illustrates a block diagram of a lighting device according to the present invention; [0015]
    [0016] FIG. 2 illustrates a block diagram of different basic light functions, which are formed by the interaction of one end of an optical guide with the shape of a light output element; [0016]
    [0017] FIG. 3 illustrates a diagram of the basic light distribution according to a first embodiment; [0017]
    [0018] FIG. 4 illustrates a diagram of the basic light distribution according to a second embodiment; [0018]
    [0019] FIG. 5 illustrates a diagram of the basic light distribution according to a third embodiment; and [0019]
    [0020] FIG. 6 illustrates a diagram of the basic light distribution according to a fourth embodiment. [0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
    [0021] FIG. 1 illustrates a schematic diagram of a light function selector [0021] 1 for a lighting device as part of a light input unit 2. The light input unit 2 is formed by the light function selector 1 and a plurality of light sources LQ1, LQ2, . . . LQn, and is arranged at a distance from a light outlet area 3 that includes of a plurality of light output modules LM1, . . . LMn. The light output modules LM1, . . . LMn are each assigned to a separate housing (not shown), preferably a headlight housing.
    [0022] Each light module LM[0022] 1, . . . LMn, inlcudes of a plurality of light output elements LA1, LA2, . . . LAn, which produce a basic light distribution 6 a-6 d (FIGS. 3-6) in conjunction with the respective correlated light output faces 4 a-4 d (FIG. 2) of optical guides 5, which are optically connected to the light function selector 1.
    [0023] In a preferred embodiment according to FIG. 2 through [0023] 6, the light function selector 1 can be used to optionally drive different light output elements LA1, LA2, LA3, LA4, of a light output module LM1, which is accommodated in a right front headlight housing of a motor vehicle and a light module LM2 which is equipped with the same light output elements LA1, LA2, LA3, LA4 and is arranged in a left front headlight housing. Therefore, optical guides 5 run in pairs from the light function selector 1 to light modules LM1 and LM2.
    [0024] As is illustrated in FIG. 2 in combination with FIG. 3, 4, [0024] 5 and 6, four basic light distributions 6 a, 6 b, 6 c and 6 d are produced by optical linkage of a light outlet face 4 a, 4 b, 4 c, 4 d of an optical guide 5 (the cross section of light outlet faces 4 a, 4 b, 4 c, 4 d is shown in simplified form in FIG. 2) with the light output elements LA1, LA2, LA3, LA4. FIG. 2 illustrates the cross section or the top view of the light output elements LA1, LA2, LA3, and LA4. Thus, the first basic light distribution 6 a, which is produced by controlling the first light output element LA1, forms a broad light distribution with horizontal scattering below the light-dark limit. This basic light distribution 6 a in combination with the second basic light distribution 6 b, which is equivalent to a symmetrical low beam distribution, may preferably form a fog light NL. A low beam AL can be produced by joint selection of basic light distribution 6 b with basic light distribution 6 c, which corresponds more to a central low beam distribution with a 15°slope. A high beam FL can be produced by combining basic light distribution 6 c with basic light distribution 6 d, which produces a central light spot with areas above the light-dark limit.
    [0025] To produce the light functions of a low beam AL, a fog light NL and a high beam FL, the light output elements LA[0025] 1, LA2, LA3, LA4, of light output modules LM1, LM2 are each connected to the light function selector 1 by an optical guide 5.
    [0026] To control the corresponding light output elements LA[0026] 1, LA2, LA3, LA4, the light function selector 1 has a plurality of light deflecting elements which are designed as reflectors assigned to each light source LQ1, LQ2 and can be aligned with the respective light input faces of the optical guides 5 by pivoting about a relatively small angle with respect to a light input central plane of the respective optical guides 5. Each light source LQ1, LQ2 is provided with two optical guides 5, which branch off in the direction of light propagation to the respective light modules LM1, LM2. The light function selector 1 arranged between the light sources LQ1, LQ2 on the one hand and light output elements LA1, LA2, LA3, LA4 on the other hand thus makes it possible to control the same in order to form the predefined light functions AL, FL, NL in a manner that is both flexible and space saving due to the fact that it is arranged at a distance from light output elements LA1, LA2, LA3, LA4.
    [0027] As illustrated in FIG. 2, the light output elements LA[0027] 1, LA2 are arranged essentially in a rectangular pattern, while light output elements LA3, LA4 are designed to be elliptical or circular. The light outlet faces 4 a and 4 b are each triangular with a tip running upward; light outlet face 4 c is essentially rectangular with a step, and light outlet face 4 d is designed to be elliptical.
    [0028] Light sources LQ[0028] 1, LQ2 are arranged at a preferred location, preferably at a focal point of the reflectors with an elliptical design. Light sources LQ1, LQ2, LQn are each designed as gas discharge lamps. The Optical guide 5 is preferably designed as a two-armed optical fiber made of hot-fused component optical fibers.
    [0029] The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims. [0029]
    权利要求:
    Claims (10)
    [1" id="US-20010006466-A1-CLM-00001] 1. A lighting device for a vehicle, comprising:
    at least one light output device for producing a light distribution and having a plurality of light output elements (LA1, LA2, LA3, LA4, . . . LAn);
    an upstream light function selector (1) for optional selection of the light output elements (LA1, LA2, LA3, LA4, . . . LAn), said upstream light function selector (1) operatively connected to said at least one light output element;
    at least one light source (LQ1, LQ2, . . . LQn) arranged at a distance from the light output element; and
    at least one optical guide (5) for connecting the light source (LQ1, LQ2, . . . LQn) to the light output device.
    [2" id="US-20010006466-A1-CLM-00002] 2. The lighting device according to
    claim 1 , wherein said light function selector (1) is disposed between said light source (LQ1, LQ2, . . . LQn) and said light output elements (LA1, LA2, LA3, LA4, . . . LAn), said light function selector (1) and said light source (LQ1, LQ2, . . . LQn) combined being a light input unit (2) into which said optical guide interfaces to receive light emitted from said light source (LQ1, LQ2, . . . LQn).
    [3" id="US-20010006466-A1-CLM-00003] 3. The lighting device according to
    claim 2 , wherein the light input unit (2) has a light deflecting element which is provided for said at least one light source (LQ1, LQ2, . . . LQn) and is mounted to be pivotable.
    [4" id="US-20010006466-A1-CLM-00004] 4. The lighting device according to
    claim 3 , wherein the light deflecting element is a reflector which can be brought into at least two light input positions, in which said light source (LQ1, LQ2, . . . LQn), mounted at a preferred point (focal point), is alignable with said at least one optical guide (5).
    [5" id="US-20010006466-A1-CLM-00005] 5. The lighting device according to
    claim 1 , wherein at least two light output elements (LA1, LA2, LA3, LA4 . . . LN4), which produce a segmented basic light distribution (6 a, 6 b, 6 c, 6 d), are connected together to form a given light function (NL, AL, FL).
    [6" id="US-20010006466-A1-CLM-00006] 6. The lighting device according to
    claim 1 , wherein the optical guide (5) has a light outlet face (4 a, 4 b, 4 c, 4 d), which is shaped so that it produces a basic light distribution (6 a, 6 b, 6 c, 6 d) in conjunction with one of the light output elements (LA1, LA2, LA3, LA4, . . . LAn).
    [7" id="US-20010006466-A1-CLM-00007] 7. The lighting device according to
    claim 6 , wherein the number of said at least one optical guide (5), downstream from said light function selector (1) in the direction of propagation of light, corresponds to a number of light output elements (LA1, LA2, LA3, LA4, . . . LAn).
    [8" id="US-20010006466-A1-CLM-00008] 8. The lighting device according
    claim 5 , wherein the light distributions (6 a, 6 b, 6 c, 6 d) are designed so that a light function (AL, FL, NL) can be produced by combining two light distributions (6 a, 6 b, 6 c, 6 d).
    [9" id="US-20010006466-A1-CLM-00009] 9. The lighting device according to
    claim 1 , wherein said light source (LQ1, LQ2, . . . LQn) is a gas discharge lamp.
    [10" id="US-20010006466-A1-CLM-00010] 10. The lighting device according to
    claim 1 , wherein said optical guide (5) is a two-armed optical fiber (5) having two component optical fibers fused together.
    类似技术:
    公开号 | 公开日 | 专利标题
    US9908460B2|2018-03-06|Motor vehicle light with a light conductor and a shield that is visible through the light conductor
    US9506615B2|2016-11-29|Motor vehicle headlamp having a multi-function projection module
    US7988345B2|2011-08-02|Projection module of an automobile headlight
    US7367702B2|2008-05-06|Headlight
    US11035537B2|2021-06-15|Luminous lighting and/or signaling module of an automotive vehicle
    KR20070070107A|2007-07-03|Vehicular headlamp
    CN108302457A|2018-07-20|Optical module for illuminating ceiling light
    US10605428B2|2020-03-31|Lighting unit for a motor vehicle headlight for generating at least two light distributions
    CN105972534A|2016-09-28|Light-emitting device with optical waveguides
    US10161592B2|2018-12-25|LED headlamp with refractive interface creating cut-off for vehicles
    EP0371510A2|1990-06-06|Automotive headlamp
    US6471382B2|2002-10-29|Light guiding headlight for a vehicle
    US7494257B2|2009-02-24|Lighting mechanism
    CN110094686B|2021-11-19|Motor vehicle lighting module and lighting and/or signalling device
    JPH08167301A|1996-06-25|Headlamp for vehicle
    US10690307B2|2020-06-23|Optical part comprising a block with a dioptric interface forming a folder for two beams
    US11149914B2|2021-10-19|Planar light guide lighting device for vehicles
    KR20150072623A|2015-06-30|Lamp for vehicle
    US5746496A|1998-05-05|Blink lamp
    EP3839330A1|2021-06-23|Automotive lighting and/or signaling device
    US20210095828A1|2021-04-01|Vehicle lamp
    EP3366982B1|2019-06-19|A lighting apparatus and a vehicle front headlight equipped therewith
    KR20210064667A|2021-06-03|Lamp for vehicle
    KR20200059152A|2020-05-28|Illumination device for a motor vehicle head lamp and motor vehicle head lamp
    KR20200072421A|2020-06-22|Illumination device for a motor vehicle
    同族专利:
    公开号 | 公开日
    US6471382B2|2002-10-29|
    EP1106910A2|2001-06-13|
    DE50012191D1|2006-04-20|
    EP1106910A3|2004-03-17|
    EP1106910B1|2006-02-08|
    DE19959910A1|2001-06-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5222793A|1991-02-25|1993-06-29|General Electric Company|Remote vehicle lighting system|
    DE4209957A1|1992-03-27|1993-09-30|Bosch Gmbh Robert|Lighting device for vehicles|
    DE4313914C2|1993-04-28|2003-05-08|Bosch Gmbh Robert|Motor vehicle headlight device with variable illuminance distribution|
    DE4313915B4|1993-04-28|2005-08-04|Automotive Lighting Reutlingen Gmbh|Lighting device for vehicles|
    DE4341409C2|1993-12-04|2002-07-11|Bosch Gmbh Robert|Device for regulating the headlight range of motor vehicle headlights|
    JPH07312103A|1994-03-22|1995-11-28|Nippondenso Co Ltd|Lighting fixture device|
    DE19740316C2|1997-09-13|2001-01-18|Bosch Gmbh Robert|Luminaire unit for motor vehicles|
    DE29909033U1|1999-05-22|1999-07-22|Hella Kg Hueck & Co|Lighting device for vehicles|EP1283127A3|2001-08-08|2009-11-18|Volkswagen Aktiengesellschaft|Method for actuating a headlight-system to generate adapted light functions|
    DE10204481B4|2002-02-05|2009-06-18|Automotive Lighting Reutlingen Gmbh|Headlamps, in particular for motor vehicles|
    DE10219756A1|2002-05-02|2004-02-19|Hella Kg Hueck & Co.|Illumination device for motor vehicle, has reflector elements with common inner, and separate outer focal points; light reflected by first element can be switched between light conductors by control device|
    EP1902247A2|2005-07-12|2008-03-26|Magna International Inc|Semiconductor light engine for automotive lighting|
    US8057679B2|2008-07-09|2011-11-15|Baxter International Inc.|Dialysis system having trending and alert generation|
    US10089443B2|2012-05-15|2018-10-02|Baxter International Inc.|Home medical device systems and methods for therapy prescription and tracking, servicing and inventory|
    EP3067449A1|2015-03-10|2016-09-14|SMR Patents S.à.r.l.|Light guide, lighting device and vehicle part|
    US10589014B2|2016-12-21|2020-03-17|Baxter International Inc.|Medical fluid delivery system including remote machine updating and control|
    US10964417B2|2016-12-21|2021-03-30|Baxter International Inc.|Medical fluid delivery system including a mobile platform for patient engagement and treatment compliance|
    法律状态:
    2001-02-12| AS| Assignment|Owner name: HELLA KG HUECK & CO., GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:EICHHORN, KARSTEN;REEL/FRAME:011517/0563 Effective date: 20001201 |
    2006-04-07| FPAY| Fee payment|Year of fee payment: 4 |
    2010-06-07| REMI| Maintenance fee reminder mailed|
    2010-10-29| LAPS| Lapse for failure to pay maintenance fees|
    2010-11-29| STCH| Information on status: patent discontinuation|Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
    2010-12-21| FP| Expired due to failure to pay maintenance fee|Effective date: 20101029 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE19959910||1999-12-11||
    DE19959910.6||1999-12-11||
    DE19959910A|DE19959910A1|1999-12-11|1999-12-11|Lighting device for vehicles|
    [返回顶部]