• 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 an LED light module (1) for a motor vehicle or for a headlight for a motor vehicle, wherein the LED light module (1) has at least one LED light source (3), which comprises at least one light emitting diode, and which of the at least an LED light source (3) emitted light (10, 11) via at least one reflector (2) is emitted in a lying in front of a motor vehicle area, said on the reflector (2) emitted light (10 ', 11') a defined At least one diaphragm (4) is provided according to the invention in the light exit direction after the at least one LED light source (3), which at least one diaphragm (4) in the beam path of at least a part of the at least one LED light source (3) light emitted in the light exit direction (20), and wherein the at least one diaphragm (4) on its at least one LED light source (3) facing side (4 ') at least partially Li Reflective is formed, and wherein the at least one diaphragm (4) with respect to the at least one reflector (2) and the at least one LED light source (3) is arranged such that of the at least one LED light source (3) emitted and at the at least one aperture (4) reflected light (20 ', 21') on the at least one reflector (2) is reflected and radiated from there into the outer space, wherein the at least one reflector (2) radiated light beams (20 ", 21") form an additional light distribution (31 ') which lie in the light image at least partially below the defined basic light distribution (30') or in one or more regions of the basic light distribution, preferably in a lower region of the defined basic light distribution (30 ').
    公开号:AT510930A1
    申请号:T2068/2010
    申请日:2010-12-15
    公开日:2012-07-15
    发明作者:Gerald Boehm
    申请人:Zizala Lichtsysteme Gmbh；
    IPC主号:
    专利说明:

    -7 4 ·························································································································································································
    The invention relates to an LED light module for a motor vehicle or for a headlight for a motor vehicle, wherein the LED light module has at least one LED light source, which comprises at least one light emitting diode, and wherein the light emitted by the at least one LED light source via at least one reflector is emitted into a region lying in front of a motor vehicle, wherein the light emitted via the reflector forms a defined basic light distribution.
    Furthermore, the invention relates to a vehicle headlight with one or more such LED light modules.
    Such LED light modules in the form of reflection systems are known from the prior art. In such reflection systems, the light is applied to a correspondingly shaped reflector, e.g. radiating an open area reflector and emanating from it into the outside space, by the design of the reflector, the desired light image, e.g. produces a low beam distribution. A lens for projecting the light image on the road is not provided in such systems.
    The LED light source is usually in the optical axis of the system and in the region of a focal point of the reflector, and the 0 ° -Abstrahlrichtung the LED light source or the one or more LED light source forming light emitting diodes are normal to the optical axis. Often, the LED light source, i. the 0 ° -radiation direction, also inclined to the reflector.
    A characteristic of dimmed light distribution, e.g. a low beam distribution is that relatively much light is irradiated in an area on the horizontal line or in particular below this horizontal line, as is known in the art, this dimmed light distribution extends over a certain angular range down to the vehicle.
    The emission characteristic of light-emitting diodes is shown by way of example in FIG. A typical characteristic is the approximately hemispherical radiation characteristic with relatively much emitted light at the 0 ° -radiation direction and a sharply decreasing amount of emitted light as the angle increases. FIG. 4 shows the relative intensity of the radiation as a function of the radiation angle. The two maxima are specific for special, frequently used light-emitting diodes, but more interesting for the invention is above all the symmetrical emission behavior about the 0 ° -radiation direction and in particular the strong decrease of the intensity as a function of the increasing emission angle.
    This radiation characteristic of light-emitting diodes in conjunction with the above-described arrangement of the light emitting diodes in relation to the reflector results in that light which is emitted from the light emitting diode (s) in the direction of the light exit direction can no longer be used via the reflector for producing the dimmed light distribution. either because it exits directly from the module without impacting the reflector, or reaches the reflector in an area where the light can no longer be meaningfully used.
    If no stray light is generated with this unused light, this loss of light is basically unproblematic (but reduces the efficiency of the optical system, since this light remains unused), and since from the affected areas of the beam angle of the light emitting diode (n) anyway only little light comes , this is of less importance for the generation of the light distribution. In the event that this light leads to stray light, measures must be taken that this stray light can not escape from the light module.
    It is an object of the invention to improve the efficiency of such an LED module and to improve the illumination of the apron in front of the vehicle.
    This object is achieved with an LED module mentioned above in that according to the invention in the light exit direction after the at least one LED light source at least one aperture is provided, which at least one aperture in the beam path of at least a portion of the at least one LED light source in Light emitted light emitted direction, and wherein the at least one aperture on its at least one LED light source side facing at least partially reflective light, and wherein the at least one aperture with respect to the at least one reflector and the at least one LED light source arranged in such a manner is that of the -3-
    Fl 1928 at least one LED light source emitted and reflected at the at least one aperture light is reflected on the at least one reflector and radiated from there to the outside, wherein the radiated from the at least one reflector light beams form an additional light distribution, which in the light image at least partially below the defined basic light distribution or in one or more areas of the basic light distribution, preferably in a lower region of the defined basic light distribution.
    The term "light exit direction " refers to the direction of the light exit of the light beam out of the LED module, not to the light exit direction out of the LED light source; the "light exit direction " corresponds approximately to the direction of the optical axis of the LED module.
    The use of at least one diaphragm in the beam path after the at least one LED light source makes it possible to emit light emitted by the at least one LED light source which can not be used to generate the basic light distribution, for example because it is directly without the shutter would emerge or would be emitted by the reflector in an area above the legally permitted cut-off of the basic light distribution by reflection at the at least one aperture in a region of the reflector, which this light in an area below the basic light distribution or in a Area of the basic light distribution, preferably in a lower area of the basic light distribution.
    It is optimally simple in production and in particular with regard to the luminous efficacy if the at least one diaphragm is designed to be reflective on its side facing the at least one LED light source on its entire surface.
    The light shading effect and the light output are optimal when the at least one aperture extends over the entire width of the reflector
    In this case, the at least one aperture can be formed running transversely to the reflector straight or curved towards the reflector. The curvature can be present in the vertical and / or horizontal direction. Preferably, the diaphragm can be designed to be adjustable in its curvature, for example by using a bendable diaphragm, wherein, for example, actuators can be used for the curvature.
    P1192S •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ··· «» Μ Φ »· Φφ * · -4-
    In principle, the function according to the invention can be realized by means of a plurality of diaphragms, but in view of the manufacturing effort, it is generally advantageous if exactly one diaphragm is provided
    Expediently, the one or more light-emitting diodes (s) of the at least one LED light source lies / lie in a horizontal plane which contains the optical axis of the LED light module.
    Furthermore, it is provided that the zero-degree emission angle of the at least one LED light source is inclined at an angle of 90 ° to the optical axis or at an angle smaller than 90 ° to the optical axis and counter to the light exit direction.
    These arrangements, in which the light emitting diode (s) shine up / down on the reflector, take into account the known Ausstrahlcharakteristik the LEDs.
    An inclination to the optical axis at an angle of less than 90 ° to the rear, contrary to the direction of light exit from the module, has the advantage that less interference from house may come to the outside, in this variant, but light can also be lost from the house that could otherwise be used.
    Furthermore, it is advantageously provided that the one or more light emitting diode (s) of the at least one LED light source in a focal point of the reflector or along and / or transversely, parallel to or in a horizontal plane, which the optical axis, the optical axis in Area of a focal point of the reflector are arranged.
    In a variant in which little space is required for the aperture in the light exit direction, it is provided that the at least one aperture is normal to the optical axis
    However, it can also be provided that the at least one aperture is inclined at an angle smaller than 90 °, counter to or in the light exit direction, to the optical axis.
    A more complex solution is characterized in that the at least one aperture in the beam path of the at least one LED light source is movable, wherein the at least one aperture, preferably about a United pivot axis, which preferably parallel to a
    Horizontal plane containing the optical axis is pivotable.
    In this variant, the aperture can be pivoted about at slower speed, so that there is more apron in the photo, which may be something at a slower ride in the city, etc. of advantage. At faster speeds, the iris is either swung out of the beam path immediately or with a gentle transition, so that the apron in the photo is reduced.
    Preferably, the pivot axis is normal to the optical axis.
    It is also advantageous if the pivot axis in the horizontal plane, which contains the optical axis hens, whereby the aperture can be almost completely swung out of the beam path.
    In an exemplary variant of the invention, the fundamental light distribution is a dimmed light distribution, e.g. a low beam distribution. Or it is a light distribution regulated by ECE R 123, such. Motorway light, low beam, bad weather, city light. For this purpose, the aperture can be pivoted, for example in highway light so that the apron is greatly reduced, so the light of the apron is pushed under HD and so this light is increased, whereby the distance vision is improved.
    In an exemplary variant of the invention, for example when the basic light distribution is a dimmed light distribution such as a low-beam light distribution, the additional light distribution forms an apron light distribution.
    In order to obtain a homogeneous total light distribution, it is advantageous if the basic light distribution and the additional light distribution overlap one another in the transition region or at least directly adjoin one another.
    In addition, it may be advantageous if the at least one diaphragm has on its side facing the at least one LED light source at least regionally, preferably on the entire surface, a structure which increases the homogeneity of the light reflected from the side of the at least one diaphragm For example, in a corrugation and / or faceting and / or hallmarking and / or Nabung the side of the at least one aperture exists.
    Fl 1928 «• • m 4 4 ···· MM • • • •« • · «* 4 · 4 4 • • • ♦ • 4 • • • • • - 6 -
    In the following the invention is discussed in more detail with reference to the drawing. In this shows
    1 shows a light module according to the invention, schematically in a vertical section along the optical axis of the module in a schematic representation,
    2 shows the light module from FIG. 1 in a schematic view from the front, looking in the direction opposite to the light exit direction, FIG.
    3 shows an exemplary light distribution generated with a light module according to the invention, and FIG
    4 shows a characteristic, exemplary emission characteristic for a light-emitting diode.
    1 shows an LED light module 1 for a motor vehicle or for a headlight for a motor vehicle in a vertical section, Figure 2 shows the light module from the front. The LED light module 1 has an LED light source 3, which comprises at least one light-emitting diode, and wherein the light emitted by the at least one LED light source 3 10,11 is emitted via a reflector in a lying in front of a motor vehicle area, the light 10 ', 11' emitted via the reflector 2 forms a defined basic light distribution 307, as is schematically indicated in FIG.
    In the schematic representation shown, an ellipsoidal reflector is shown in which the light beams ΙΟ ', ΙΓ are reflected forward and downward. Paraboloid-like reflectors or free surface reflectors are advantageously used in the invention, however, in which the light beams l (f, 11 '(contrary to the illustration in Figure 1) parallel to the optical axis, ie horizontally exit from the light module.
    The LED light source 3 is located in the optical axis 100 of the system (light module) and in the region of a focal point or in the focal point of the reflector, the 0 ° -Abstrahlrichtung the LED light source 3 is in Figure 1 normal to the optical axis 100. Frequently the LED light source, ie the 0 ° -radiation direction, also inclined to the reflector.
    A characteristic of dimmed light distribution, e.g. a low-beam distribution is that relatively much light is irradiated in a region on the horizontal line HH (Figure 3) or in particular below this horizontal line, as is known in the art -7- P11928 * ♦ "········ , wherein this dimmed light distribution extends over a certain angular range down to the vehicle.
    The emission characteristic of light-emitting diodes is shown by way of example in FIG. Typical characteristic is the approximately hemispherical radiation with relatively much emitted light in the 0 ° -Abstrahlrichtung and a sharply decreasing with increasing angle amount of emitted light. FIG. 4 shows the relative intensity of the radiation as a function of the emission angle. The two maxima are specific for special, frequently used light-emitting diodes, but more interesting for the invention is above all the symmetrical emission behavior around the 0 "-radiation direction and in particular the strong decrease of the intensity as a function of the increasing emission angle.
    This emission characteristic of light-emitting diodes in conjunction with the above-described arrangement of the light emitting diodes in relation to the reflector results in that light which is emitted from the light emitting diode (s) in the direction of the light exit direction can no longer be used via the reflector to produce the dimmed light distribution. either because it exits directly from the module without impacting the reflector, or reaches the reflector in an area where the light can no longer be meaningfully used.
    FIG. 1 shows, for example, a light beam 20 which, without the measures according to the invention, is embodied as light beam 20 '". would leak out of the light module unused.
    If no stray light is generated with this unused light, this loss of light is fundamentally unproblematic {but reduces the efficiency of the optical system, since this light remains used), and since from the affected areas of the beam angle of the light emitting diode (n) anyway only little light comes , this is of less importance for the generation of the light distribution 30 shown.
    To now light rays like the schematically shown light ray 20,20 " also be able to use, in the light exit direction after the LED light source 3, a diaphragm 4 is provided, which aperture 4 is located in the beam path of at least part of the light source 20 emitted by the LED light source 3 in light. -8- Ρ1Ϊ928
    The diaphragm 4 is formed on its side facing the LED light source 3 4 'light reflecting. Furthermore, the diaphragm 4 is arranged with respect to the reflector 2 and the LED light source 3 such that light 20 ', 21' emitted by the LED light source 3 and reflected at the diaphragm 4 is reflected onto the reflector 2 and thence into the Outside is radiated, wherein the radiated light from reflector 2 20 ", 21 " form an additional light distribution 31 'which lie in the light image at least partially below the defined basic light distribution 30' or in one or more areas of the green light distribution, preferably in a lower area of the defined basic light distribution 30 '.
    The reflective property and / or that of the reflector is preferably obtained by coating the diaphragm and / or the reflector with a reflective layer, or the diaphragm and / or the reflector are produced using high-gloss materials.
    The additional light distribution formed in this way, which adjoins the main light or basic light distribution in a lower region, is shown in FIG.
    The term "light exit direction " refers to the direction of the light exit of the light beam out of the LED module, not to the light exit direction out of the LED light source; the "light exit direction " corresponds approximately to the direction of the optical axis 100 of the LED module.
    By using the diaphragm 4 in the beam path after the LED light source, it is possible, emitted by the LED light source light, which can not be used for the generation of the basic light distribution, such as because it would emerge directly without aperture from the light module or of the Reflector would be emitted in a range above the legally permitted cut-off of the basic light distribution to reflect by reflection on the aperture in a region of the reflector, which this light in an area below the basic light distribution or in a range of the basic light distribution, preferably in a to radiate the lower area of the basic light distribution.
    The diaphragm is preferably designed with regard to its arrangement and height in such a way that those marginal rays 10, 11 which still have sufficient light intensity to contribute to the basic light distribution 30 'are still transmitted directly from the LED light source 3 to the light source 3. ·· * P11928 * · -9-
    Reflector 2 can get. Other rays, such as light beam 20 'with already too low intensity are reflected on the aperture 4 and from there to the reflector 2 and can then be used especially for the illumination of the apron, where lower light intensities are sufficient.
    How the diaphragm 4 is arranged in order to define the boundary rays 10 also depends on the emission characteristics of the light-emitting diodes or LED light sources used and / or on the reflector used.
    The aperture 4 shown in the figures is formed on its side facing the LED light source 3 side 4 'on the entire surface reflective, and the aperture 4 extends (Figure 2) over the entire width of the reflector. 3
    In this case, the diaphragm 4, as shown in Figure 2, transversely to the reflector 3 straight, but also to the reflector 3 out curved (not shown) may be formed. The straight diaphragm 4 shown is normal to the optical axis 100.
    In an exemplary embodiment of the invention as shown, the fundamental light distribution 30 'is a dimmed light distribution, e.g. a low beam distribution (in this example without asymmetry).
    In an exemplary variant of the invention, for example when the basic light distribution is a dimmed light distribution such as a low-beam light distribution, the additional light distribution 31 'forms an apron light distribution.
    FIG. 3 also shows in each case a single helix image 30 (generated by the light source and a region of the reflector, ie imaging of the light source over a specific reflector region) and helix image 31 (generated by the light source, a region of the reflector and the diaphragm, that is to say the illustration of FIG Aperture on a specific reflector area reflected light source).
    Finally, in order to obtain a homogeneous total light distribution, it is advantageous, as shown in FIG. 3, for the basic light distribution 30 'and the additional light distribution 31' to overlap one another or at least directly adjoin one another in the transition region.
    With the invention it becomes possible to produce a basic light distribution, e.g. To produce low beam distribution with little front illumination. Through the aperture then additional apron illumination can be generated.
    By means of the invention, it is possible to produce with an equally strong LED light source compared to a conventional system of a law-compliant light distribution with more apron, or a law-compliant light distribution can be generated with a weaker LED light source.
    A headlight or light module according to the invention is capable of complying with the legal provisions of various regulations and statutory provisions, such as e.g. To meet ECE and SAE.
    权利要求:
    Claims (18)
    [1]
    1 ΡΠ928 • * # t «» ttl • · * • · · · · t ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• a motor vehicle or for a headlight for a motor vehicle, wherein the LED light module (1) has at least one LED light source (3), which comprises at least one light emitting diode, and wherein the light emitted by the at least one LED light source (3) (10, 11) is emitted via at least one reflector (2) into a region situated in front of a motor vehicle, the light (IO ', 11') emitted via the reflector (2) forming a defined basic light distribution (30 '), characterized in that in the light exit direction after the at least one LED light source (3) at least one aperture (4) is provided, which at least one aperture (4) in the beam path of at least a part of the at least one LED light source (3) is in the light exit direction emitted light (20), and wherein the at least one diaphragm (4) is designed to be reflective at least in regions on its side (4 ') facing the at least one LED light source (3), and wherein the at least one diaphragm (4) is reflective with respect to the at least one reflector (2) and the at least one LED light source (3) is arranged such that light (20 ', 21') emitted by the at least one LED light source (3) and reflected at the at least one diaphragm (4) is directed onto the at least one reflector (2 ) and emitted from there into the outer space, the light beams (20 ", 21") emitted by the at least one reflector (2) forming an additional light distribution (31 ') which in the light image at least partially lies below the defined basic light distribution (30'). ) or in one or more regions of the basic light distribution, preferably in a lower region of the defined global distribution (30 ').
    [2]
    2. LED light module according to claim 1, characterized in that the at least one diaphragm (4) on its the at least one LED light source (3) facing side (4 ') is formed reflecting on its entire surface.
    [3]
    3. LED light module according to claim 1 or 2, characterized in that the F11928 »« ··· «·» ·· «· · ·« * t »« · · * · · · «· · # * * * At least one aperture (4) across the entire width of the reflector (3). ".... extends.
    [4]
    4. LED light module according to one of claims 1 to 3, characterized in that the at least one aperture (4) is formed transversely to the reflector (3) straight or curved towards the reflector (3).
    [5]
    5. LED light module according to one of claims 1 to 4, characterized in that exactly one aperture (4) is provided.
    [6]
    6. LED light module according to one of claims 1 to 5, characterized in that the one or more light emitting diode (s) of the at least one LED light source (3) in a horizontal plane, which the optical axis (100) of the LED light module Contains (1), lies / lie.
    [7]
    7. LED light module according to one of claims 1 to 6, characterized in that the zero-degree radiation angle (0 °) of the at least one LED light source (3) at an angle of 90 ° to the optical axis (100) or under a Angle is less than 90 ° to the optical axis (100) and inclined against the light exit direction.
    [8]
    8. LED light module according to one of claims 1 to 7, characterized in that the one or more light emitting diode (s) of the at least one LED light source (3) in a focal point of the reflector (2) or along and / or transverse, parallel to or in a horizontal plane, which the optical axis (100), the optical axis (100) in the region of a focal point of the reflector (2) are arranged.
    [9]
    9. LED light module according to one of claims 1 to 8, characterized in that the at least one diaphragm (4) is normal to the optical axis (100).
    [10]
    10. LED module according to one of claims 1 to 8, characterized in that the at least one aperture at an angle less than 90 °, opposite or in the light exit direction, to the optical axis (100) is inclined.
    [11]
    11. LED module according to one of claims 1 to 8, characterized in that the at least one aperture in the beam path of the at least one LED light source is movable, wherein the at least one aperture preferably about a pivot axis, which -13- ··· ····· F11928 preferably parallel to a horizontal plane containing the optical axis, is swiveled.
    [12]
    12. LED module according to claim 11, characterized in that the pivot axis is normal to the optical axis.
    [13]
    13. LED module according to claim 11 or 12, characterized in that the pivot axis in the horizontal plane, which contains the optical axis is located.
    [14]
    14. LED module according to one of claims 1 to 13, characterized in that the Gnmd light distribution (30 ') is a dimmed light distribution, e.g. a low beam distribution.
    [15]
    15. LED module according to one of claims 1 to 14, characterized in that the additional light distribution (31 ') forms an apron light distribution.
    [16]
    16. LED module according to one of claims 1 to 15, characterized in that the basic lächtverteilung (30 ') and the additional light distribution (31') overlap each other in the transition region or at least directly adjacent to each other.
    [17]
    17. LED module according to one of claims 1 to 16, characterized in that the at least one diaphragm (4) at its at least one LED light source (3) facing side (4 ') at least partially, preferably on the entire surface of a the structure of the structure increasing, for example, in a corrugation and / or faceting and / or punching and / or embossing and / or embossing of the side (4 ') of the at least one aperture (4) of the at least one aperture (4') 4).
    [18]
    18. A vehicle headlamp with one or more LED modules according to one of claims 1 to 17. Vienna, the
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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 |
    2018-08-15| MM01| Lapse because of not paying annual fees|Effective date: 20171215 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA2068/2010A|AT510930B1|2010-12-15|2010-12-15|LED LIGHT MODULE|ATA2068/2010A| AT510930B1|2010-12-15|2010-12-15|LED LIGHT MODULE|
    BR112013014009A| BR112013014009A2|2010-12-15|2011-11-18|led light module|
    EP11810546.9A| EP2652392B1|2010-12-15|2011-11-18|Led light module|
    CN201180060274.4A| CN103249992B|2010-12-15|2011-11-18|Led light module|
    JP2013543466A| JP5800161B2|2010-12-15|2011-11-18|LED lamp module|
    PCT/AT2011/050033| WO2012079104A1|2010-12-15|2011-11-18|Led light module|
    US13/884,152| US8967841B2|2010-12-15|2011-11-18|LED light module|
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