• 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:
    The invention relates to a lighting device (100) for a motor vehicle, comprising a lens (1) and at least one light source (4, 5, 61), wherein light from the at least one light source (4, 61) from the lens (1) into a projecting in front of the illumination device (100), wherein the lens (1) at its rear side (3) at least one reflective surface (3a) is associated, and / or wherein the lens (1) at its rear side (3) at least one Total reflection region (3a '), wherein at least one light source (4) via a Einstrahlbereich (40) irradiates light into the lens (1), and wherein the in the lens (1) via the Einstrahlbereich (40) irradiated light from the at least one reflecting surface (3a) and / or the at least one total reflection region (3a ') and emerges from the lens (1) via the light exit surface (2) and is projected into a region in front of the illumination device (100).
    公开号:AT512569A1
    申请号:T50062/2012
    申请日:2012-03-07
    公开日:2013-09-15
    发明作者:Ruediger Reitinger；Johann Altmann
    申请人:Zizala Lichtsysteme Gmbh；
    IPC主号:
    专利说明:

    P12477
    Lighting device for a motor vehicle
    The invention relates to a lighting device for a motor vehicle, comprising a lens and at least one light source, wherein light from the at least one light source is projected from the lens into an area located in front of the lighting device.
    Furthermore, the invention relates to a vehicle headlight with at least one such lighting device.
    Projection systems for vehicle headlights, in which the light from one or more light sources is projected via a projection lens for generating a light distribution in an area in front of the vehicle headlight, are well known. Often, such projection systems are used to produce a low-beam distribution, but also of Femlichtverteilungen or daytime running light distributions.
    It is an object of the invention to provide a projection module with which two or more light functions can be realized using only one lens.
    This object is achieved with an illumination device mentioned above in that according to the invention at least one reflective surface is assigned to the lens on its rear side, and / or wherein the lens has at least one total reflection region on its rear side, wherein at least one light source projects light into the lens via an irradiation region wherein the light irradiated into the lens via the irradiation area is reflected by the at least one reflective area and / or the at least one total reflection area and exits the lens via its light exit area and is projected into a region in front of the illumination device.
    In known, conventional lenses, light from a light source is radiated onto the lens, impinging on the lens on its backside (light entry surface), and refracted into the lens. After a further refraction, the light exits at the light exit surface (front side) and is projected into a region in front of the lens or the illumination device. -2- PI 2477
    In the present invention, as an alternative to or in addition to the above-described " conventional " Arrangement - light from one or more light sources is not radiated into the lens via the back, but over its own light irradiation areas. In contrast to the back side of the lens, which is used to irradiate light into the lens in conventional systems, these light irradiation areas are "small-scale", that is to say provided with (significantly) less light entry surface than the back side of the lens, so that the incoming light is aimed at the reflecting light Areas can be steered.
    First and foremost, in this document, under "Back " with regard to the arrangement of the reflective surface (or in other variants with total reflection ranges) to understand the surface / side of the lens, which in a "conventional". Lighting device light can enter the lens via the light device. In principle, however, reflective surfaces and / or total reflection regions can also be located in areas above / above, below / below or on the sides or laterally of the lens in areas in which light also does not shine in conventional systems.
    In this case, at least one irradiation area is arranged outside the rear side of the lens.
    By reflecting the light thus radiated into the lens at one or more reflecting surfaces associated with the back of the lens and / or at one or more total reflecting total reflection areas at the back of the lens, the light is redirected towards the light exit surface of the lens and projected into an area in front of the lighting device.
    With the invention, one or more light sources can be positioned above, below or to the side of the lens. The space of the lighting device can thereby be kept low, and it can be achieved via a lens more light functions such as high beam, low beam, daytime running light, etc. by suitable arrangement of the light sources and the reflective surfaces.
    Accordingly, it is expedient for the realization of a plurality of light functions when two or more light sources are provided, each of which irradiates light into the lens via an associated irradiation area, and wherein light irradiated via the irradiation areas differs from the at least one reflective surface and / or the at least one total reflection region is reflected and exits the lens via the light exit surface and is projected into a region in front of the illumination device.
    In order to be able to realize a separate light function with each light source, it is provided that at least one reflecting surface and / or at least one total reflection region is assigned to each light source, which radiates light into the lens via an irradiation region.
    It can be provided that light from a light source, which irradiates light via a Einstrahlbereich in the lens, directly after reflection on at least one reflective surface or on the at least one total reflection region, or after further reflection on at least one further reflective surface and / or at least one further total reflection region, emerges from the lens via the light exit surface.
    Depending on the number of reflective / total reflecting areas and their arrangement, it is thus possible that light exits the lens after simple reflection, but also after multiple reflection.
    In order to avoid scattered light and to optimize the luminous efficacy, it can be provided that the at least one irradiation region is designed as a coupling-in point into which the associated light source couples light, preferably via a supplementary optical element.
    In this context, it is likewise advantageous if the at least one light source, which irradiates light into the lens via an irradiation area, comprises one or more light-emitting diodes.
    In order to be able to optimally use, for example, light from a light source, provision can also be made for a reflecting surface, which is assigned to a light source, which irradiates light into the lens via an irradiation area, to be the associated light source, viewed in the main light exit direction of the light source. essentially opposite.
    In order to be able to optimally use a total reflection region of the lenses, it may be expedient if a total reflection region, which of a light source, which transmits light via a / 1
    Einstrahlbereich irradiated in the lens, is assigned outside of the main light exit direction of the associated light source is located.
    Basically, the at least one reflective surface associated with the back of the lens, e.g. be formed as a reflector, which is arranged at a certain distance to the back of the lens. It is advantageous, however, if the at least one reflecting surface is arranged directly on the rear side of the lens and preferably "in one piece". is formed with this. "Integral " does not mean that the reflective surface and lens must be formed of a material, but that after the application of the reflective surface, the lens and the reflective surface form a component. This embodiment has the advantage of the smaller number of components, the easier handling during assembly and also with regard to the optical properties ^ this variant of advantage. ^)
    It is particularly advantageous if the at least one reflective surface is designed as a reflective coating of the rear side of the lens.
    In a specific variant of the invention, it may be provided that the one or more reflective surfaces completely shield the back of the lens or these, e.g. in the case of a reflective coating, cover completely. In this case, if the reflective surface (s) is / are not partially transparent, it is not possible to use a lighting device that emits light on the back of the lens.
    However, it can also be provided that the one or more reflective surfaces only partially shield the back of the lens or only partially cover them.
    Those areas of the back of the lens which are not shielded can be used so that, as in known projection systems, a luminaire device irradiates light via the back into the lens, which is then emitted to generate a light distribution in a region in front of the illumination device , -5- PI2477 -5- PI2477 ή
    If the lens has one or more total reflection areas on its backside, the backside of these areas may be in a known manner as in a "conventional" or "full-reflection" area. Lens be irradiated by its own lighting device.
    In order that the lens can also be irradiated from the rear side in the region of reflecting surfaces and thus used correspondingly to produce a light distribution, it can be provided that one or more of the reflecting surfaces are formed as partially transparent surfaces. The surfaces correspondingly enter from the outside of the lens light via the back into the lens, so that this light can be used to generate a light distribution.
    In addition to the at least one light source, which irradiates light into the lens as described above, it may also be advantageous, as already mentioned, for at least one further luminaire device to be provided, from which light is emitted to the back of the lens and from the lens is projected into an area in front of the lighting device.
    In the following the invention is discussed in more detail with reference to the drawing. In this shows
    1 shows a first embodiment of a lighting device according to the invention,
    Fig. 2 shows a second embodiment of a lighting device according to the invention, and
    Fig. 3 shows a third embodiment of a lighting device according to the invention.
    Figure 1 shows a first variant of a lighting device 100 according to the invention. This consists in a known manner of a lamp device 60, from which light is emitted to the back 3 of a lens 1 and projected by the lens 1 in eüreWreich in front of the lighting device (light beams Sl). In the embodiment shown, the luminaire device 60 comprises an LED light source 61, which comprises one or more light-emitting diodes, and a reflector 62, via which the light emerging from the light source 61 is reflected onto the lens 1. The light source 61 is mounted on a mounting body, which is preferably designed as a heat sink 70. In the beam path of the
    P12477
    -6-
    Light beams Sl is a diaphragm 63 is arranged, the upper edge is imaged in the light image as a light-dark boundary of the light distribution, for example, a low-beam distribution. The light beams Sl enter the lens 1 via a region 3b of the rear side and out again via the light exit surface 2.
    According to the invention, the lens 1 has a reflective coating 3a on its back side 3. Primarily, in this document, under " back " with regard to the arrangement of the reflective surface (or in other variants with total reflection regions) to understand that surface / side of the lens, which in a "conventional". Lighting device light can enter the lens via the light device. In principle, however, reflective surfaces and / or total reflection regions can also be located in areas above / above, below / below or on the sides or laterally of the lens in areas in which light also does not radiate light in conventional systems.
    Furthermore, a light source 4 is provided which irradiates light into the lens 1 via an irradiation area 40. In the specific embodiment, the light source 4 is likewise arranged on the heat sink 70 and comprises one or more light-emitting diodes. Light from the light source 4 is irradiated via an attachment optics 41 in the Einstrahlbereich formed as Einkoppelbereich 40 and thus in the lens 1. The corresponding light beams S2 are reflected by the reflective coating 3a and exit the lens 1 via the light exit surface 2. Thus, a complementary light distribution can be realized, so that can be realized with a lens 1, for example, a low beam and in addition a high beam or daytime running lights.
    In the embodiment shown in FIG. 1, the light source 4 realizes an additive light distribution above the cut-off line of the low-beam light distribution (produced with the luminaire device 60), the orientation of the light beams S2 depending on the type of desired light distribution.
    The light source 40 is located below the lens 1, the coating 3a lies substantially opposite the light source 40 in an upper region of the lens 1. The coating 3a is located in a rear region of the lens 1 or on the back 3, however
    In this example, in an area of the rear side which is not reached by the special flattened configuration of light from the luminaire device 60.
    FIG. 2 shows an arrangement similar to FIG. In this variant, however, the lens 1 has a slightly different, less flattened shape on the back 3. Light from the luminaire device 60 in turn enters into the region 3 b of the rear side 3 of the lens 1 and is projected into a region in front of the illumination device 100.
    In principle, for the invention, that is to say for all variants shown, the reflected light beams are each aligned in such a way that the legal regulations for the respective photograph are met. In this case, the reflective layer (s) and / or the total reflection region (s) are arranged and the associated light source is aligned such that the rays emerging from the lens are emitted in the correct, desired direction.
    In an upper region of the rear side 3 of the lens 1, a reflective coating 3a is provided on the lens 1, then downwardly there is a total reflection region 3a 'of the backside 3. Beams S2 from the light source 40 impinge on and are reflected by the reflective coating 3a projected out of the lens 1 via the light exit surface 2.
    The region 3a 'acts for beams S3, S3' from the light source 40 totally reflecting. In this case, rays S3 are projected out of the lens 1 directly from the region 3a 'via the light exit surface 2, while rays S3' after the total reflection at the region 3a 'still strike the reflective surface 3a before they emerge from the lens 1.
    Rays ST from the luminaire device 60 impinge on the rear side of the lens 1 in the region of the total reflection region 3a 'and can enter via this into the lens 1 and thus be used in a light distribution formed by the luminaire device 60. This effect can alternatively also be achieved by providing a reflective coating, which is at least partially transparent, instead of the total reflection region. This means that the reflective coating (in place of the total reflection region 3a ') is designed such that it is transparent to light from the luminaire device 60, while light which strikes the other side of the coating (ie from
    P12477
    8 of the light source 4 or, if the variant from FIG. 3 is correspondingly supplemented by a luminaire device 60, from the light sources 4 and 5).
    This variant with a transparent coating instead of a total reflection region can have the disadvantage that light from the light source 40 can be lost unused and that under some circumstances undesirable optical effects can occur. In addition, it may be that in this case increased transmission losses of the light from the luminaire device 60 can be expected.
    The total reflection region 3a 'is thus available to two light sources 40, 61 for the formation of two light distributions.
    To produce a daytime running light distribution in combination with a low beam with the aid of a device as shown in FIG. 1 or 2, for example, a low beam light source (dipped beam LED) 61 can be dimmed in such a way that a complete daytime running light distribution is generated in addition to the light of the light source 4. Alternatively, the light distribution generated by the light source 4 can also be formed so that the daytime running light function is implemented by their sole use. In this case, the light source 61 can be deactivated in the day driving mode.
    Also possible is the joint realization of high beam and daytime running lights. Here, analogous to the case described above, low beam and daytime running lights can be used.
    It is also possible the simultaneous implementation of fog light and daytime running lights, since the light distribution of a fog lamp has a symmetrical cut-off and accordingly the daytime running light comparatively simply by a "patch " additive light distribution can be realized.
    In particular, by means of a lateral light coupling, an additional cornering light could optionally be realized. Combinations of several light functions such as low beam, high beam, daytime running lights and cornering lights in a lens-reflector hybrid system 100 are also possible.
    %
    P12477
    -9-
    FIG. 3 shows a variant which has no conventional luminaire device as in FIG. 1 or 2. Here, two light sources 4, 5 are provided, each of which irradiate light into the lens 1 via an irradiation area 40, 50. Light from the light source 4, 5 is irradiated via an attachment optics 41, 51 into the Einstrahlbe-range 40,50 formed as a coupling region and thus into the lens 1.
    The entire back 3 of the lens 1 is provided with a reflective coating 3a. Light S4 from the lower light source 4 is reflected across the coating 3a as shown and forms, for example, or contributes to a daytime running or femoral light distribution. Light S5 from the light source 5 generates, for example, a low beam. The rays S4, S5 can be simply or multiply reflected on the coating.
    Of course, other combinations are possible, in particular, the variants of Figures 1 and 2 are not limited to only one light source 4 and the variant of Figure 3 is not limited to only two light sources 4, 5, so that also other light functions, e.g. a cornering light can be realized.
    It would also be entirely conceivable in FIG. 3 to make at least part of the rear side of the lens totally reflective or partially transparent, so that a luminaire device as described in FIGS. 1 and 2 can also be used here in a known manner. Furthermore, by an at least partially totally reflective design of the back reflection losses can be reduced. Total reflection is possible with an efficiency of up to 100%, while conventional reflection is generally associated with losses, e.g. with about 10% loss.
    With a lighting device according to the invention or with one or two (eg left and right headlights in an automobile, side by side headlights or lighting devices in an engine (fahr) rad) corresponding headlights can be light distributions generate the legal nuns, such as SAE, CCC or meet ECE.
    Vienna, 07 March 2012
    权利要求:
    Claims (16)
    [1]
    Claims 1. A lighting device (100) for a motor vehicle, comprising a lens (1) and at least one light source (4, 5, 61), wherein light from the at least one light source (4, 5, 61) from the lens (1) is projected into a region in front of the illumination device (100), characterized in that the lens (1) at its rear side (3) at least one reflective surface (3a) is associated, and / or wherein the lens (1) at least one total reflection region (3a ') at its rear side (3), wherein at least one light source (4, 5) irradiates light into the lens (1) via an irradiation region (40, 50), and the light emitted into the lens (1) light incident on the irradiation region (40, 50) reflects off the at least one reflective surface (3a) and / or the at least one total reflection region (3a ') and exits the lens (1) via its light exit surface (2) and into an area the lighting device (100) is projected.
    [2]
    2. Lighting device according to claim 1, characterized in that at least one Einstrahlbereich (40, 50) outside the back (3) of the lens (1) is arranged.
    [3]
    3. Lighting device according to claim 1 or 2, characterized in that two or more light sources (4, 5) are provided, each of which irradiates via an associated Einstrahlbereich (40, 50) light in the lens (1), and wherein the Einstrahlbereiche (40, 50) reflected light from the at least one reflective surface (3a) and / or the at least one total reflection region (3a ') and emerges from the lens (1) via the light exit surface (2) and in a region in front of the illumination device ( 100) is projected.
    [4]
    4. Lighting device according to claim 3, characterized in that each light source (4, 5) which irradiates light into the lens (1) via an irradiation region (40, 50) has at least one reflective surface (3a) and / or at least one total reflection region (3a ') is assigned. t

    I: $ 7HÖ £ 2Ö12 11 i

    P12477 -11-
    [5]
    5. Lighting device according to one of claims 1 to 4, characterized in that the at least one Einstrahlbereich (40, 50) is designed as Einkoppelstelle, in which the associated light source (4.5) light, preferably via a Vorsatzoptikelement (41,51) , coupled.
    [6]
    6. Lighting device according to one of claims 1 to 5, characterized in that the at least one light source (40,50), which irradiates light via a Einstrahlbereich (40,50) in the lens comprises one or more light-emitting diodes.
    [7]
    7. Lighting device according to one of claims 1 to 6, characterized in that light from a light source (4,5), which irradiates light over a Einstrahlbereich (40,50) in the lens (1), directly after reflection on at least one reflective Surface (3a) or on the at least one total reflection region (3a '), or after further reflection on at least one further reflecting surface and / or on at least one further total reflection region (3a'), from the lens (1) via its light exit surface (2) exit
    [8]
    8. Lighting device according to one of claims 1 to 7, characterized in that a reflecting surface (3a), which a light source (4, 5), which irradiates light via a Einstrahlbereich (40, 50) in the lens (1) assigned is, the associated light source (4, 5) - in the main light exit direction of the light source (4, 5) seen - substantially opposite
    [9]
    9. Lighting device according to one of claims 1 to 8, characterized in that a total reflection region (3a '), which of a light source (4) which irradiates light via a Einstrahlbereich (40) into the lens (1), outside of the Main light exit direction of the associated light source (4).
    [10]
    10. Lighting device according to one of claims 1 to 9, characterized in that the at least one reflective surface (3a) is arranged directly on the back (3) of the lens (1)
    [11]
    11. Lighting device according to claim 10, characterized in that the at least one reflective surface (3a) is formed as a reflective coating of the back (3) of the lens (1).

    P12477 -12-
    [12]
    A lighting device according to any one of claims 1 to 11, characterized in that the one or more reflective surfaces (3a) completely shield or completely cover the back of the lens (3),
    [13]
    13. Lighting device according to one of claims 1 to 12, characterized in that the one or more reflective surfaces (3a) only partially shield the back of the lens (3) or cover these only partially.
    [14]
    14. Lighting device according to one of claims 1 to 13, characterized in that one or more of the reflective surfaces are formed as a partially-reflective surface.
    [15]
    15. Lighting device according to one of claims 1 to 14, characterized in that at least one further Leuchtenvorcichtung (60) is provided, from which light on the back (3) of the lens (1) and radiated from the lens (1) in a range is projected in front of the lighting device.
    [16]
    16. A vehicle headlamp with at least one lighting device according to one of claims 1 to 15. Vienna, 07 March 2012
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    引用文献:
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    法律状态:
    2016-11-15| HC| Change of the firm name or firm address|Owner name: ZKW GROUP GMBH, AT Effective date: 20161014 |
    2018-11-15| MM01| Lapse because of not paying annual fees|Effective date: 20180307 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50062/2012A|AT512569B1|2012-03-07|2012-03-07|Lighting device for a motor vehicle|ATA50062/2012A| AT512569B1|2012-03-07|2012-03-07|Lighting device for a motor vehicle|
    US14/382,431| US9249942B2|2012-03-07|2013-02-19|Lighting device for a motor vehicle|
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