• 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 headlamp, comprising a number of light sources (1), at least one optical attachment (2), having a light entry surface (2a) and a light exit surface (2b), wherein the at least one attachment optics (2) comprises a plurality Light guide body (3), and wherein each Lichtleitkörper (3) has a light entrance surface (3a), in each of which at least one light source (1) feeds light, and wherein the Lichtleitkörper (3) open into the common light exit surface (2b). According to the invention, at least one, preferably exactly one position holder (4) is provided, by means of which the light entry surfaces (3a) of the light guide bodies (3) of the at least one attachment optics (2) are held in position with respect to the light sources (1). Alternatively or additionally, it may be provided that the light exit surface (2b) of the at least one attachment optics (2) for stabilizing the form of the at least one attachment optics (2) is provided with a transparent lens (5).
    公开号:AT512865A1
    申请号:T50165/2012
    申请日:2012-05-09
    公开日:2013-11-15
    发明作者:Irmgard Krenn；Josef Plank
    申请人:Zizala Lichtsysteme Gmbh；
    IPC主号:
    专利说明:

    iPriiited: 1 Ö-05r2D12
    il 02012/50165 P12580
    Lighting device for a motor vehicle headlight
    The invention relates to a lighting device for a motor vehicle headlight, comprising a number of light sources, at least one optical attachment, with a light entrance surface and a light exit surface, wherein the at least one optical attachment comprises a plurality Lichtleitkörper, and wherein each Lichtleitkörper has a light entrance surface, in each of which at least one light source light feeds, and wherein the light guide open into the common light exit surface.
    The invention also relates to a motor vehicle headlamp comprising at least one of the abovementioned illumination devices or comprising at least one light module, which comprises at least one of the abovementioned illumination devices includes.
    The above-mentioned lighting devices are used in conjunction with light modules or Kraftfahrzeugscheinwerfem to produce light distributions. Conventionally, optics made of glass are used with which simple geometries can be realized for attachment optics. If, on the other hand, more complex geometries are required for an optical attachment, the use of glass is often unsuitable for this purpose.
    It has turned out that, instead of glass, transparent, in particular highly transparent, photoconductive and moldable plastics are well suited for the production of complex geometries as a material. Poly (organo) siloxanes are particularly well suited for the production of complex attachment optics, it is particularly advantageous if the at least one attachment optics are made of a silicone material.
    A disadvantage of the use of such plastics; however, in particular of silicone for the production of optical attachments is that such an optical attachment does not have the strength like a glass body. From an optical point of view, however, it is advantageous or necessary for the attachment optics to have a possibly stable shape, particularly with regard to the positioning of its light entry surface or its light entry surfaces with respect to the light sources. An offset of the light entry surfaces with respect to the light sources, in particular when using light-emitting diodes as light sources, leads, for example, to undesired light losses.
    In turn, an offset of the light exit surface of the attachment optics can lead to the fact that the imaged photograph does not meet the desired requirements.
    It is an object of the invention to provide a lighting device with an optical attachment, in which the above-mentioned problems are eliminated.
    This object is achieved with an illumination device mentioned above in that according to the invention at least one, preferably exactly one position holder is provided by means of which the light entry surfaces of the light guide of the at least one attachment optics are held in position with respect to the light sources.
    By such a position holder, the light guide or its light entry surfaces can be positioned exactly with respect to the light exit surfaces of the light sources, so that the light losses that would occur in an inaccurate positioning, can be minimized. A swinging of the attachment optics - which can occur especially in ferry operation due to vibrations of the vehicle -, in particular the light guide body and thus the light entry surfaces in the y- and z-direction can thus be prevented. The y- and z-direction are normal to each other and lie substantially in the plane of the light entrance surface of the optical attachment, while the x-direction is normal to the plane spanned by y and z.
    In addition, such a positional holder still has the effect, provided that it is made of a suitable material, as will be discussed in more detail below, that the light emitted from the LEDs / light sources, e.g. LEDs emerging stray light is sealed off from the position holder.
    Furthermore, this object is achieved with an illumination device mentioned above in that, according to the invention, the light exit surface of the at least one attachment optics for shape stabilization of the at least one attachment optics is provided with a transparent lens. -3- PI2580
    By such a fixed or rigid lens, the optical attachment can be stabilized in the region of its light exit surface, so that otherwise occurring adverse optical effects can be prevented.
    In the light exit surface of the optical attachment is less the problem of a swing in the y- and z-direction, but rather there is the danger that in particular the middle region of the light exit surface can begin to oscillate in the x direction. Through the lens, this swinging can also be prevented.
    It is of particular advantage, of course, if the two measures mentioned above, ie that at least one, preferably exactly one position holder is provided, by means of which the light entry surfaces of the light guide are held in position with respect to the light sources, and further that the light exit surface of the attachment optics Form stabilization of the optical attachment is provided with a transparent, in particular a highly transparent lens, are realized together in a lighting device according to the invention.
    It is particularly advantageous if the light exit surface of the attachment optics is encapsulated with the transparent lens.
    For example, this encapsulation takes place by means of a 2-component injection molding process.
    In view of a high stability of the optical attachment, it is advantageous if the Uchtaus-step surface with the transparent lens is over-molded over the entire surface.
    By encapsulating with the lens eliminates - compared to the use of a prefabricated disc - a subsequent assembly step. In addition, there is no air gap between the lens and the light exit surface of the attachment optics, which could cause additional unwanted refractions.
    It is particularly advantageous if the light exit surface is made of a plastic, preferably of a thermoplastic, in particular preferably of a temperature-resistant thermoplastic, in particular PC ("polycarbonate") /. The lens should be temperature resistant to at least about 150 ° C. -4- PI2580
    But it can also be provided that the lens is prefabricated and then mounted on the attachment optics, for example, mechanically fastened. When using a prefabricated lens, it may be particularly advantageous if it is glued by means of an optically transparent adhesive to the light exit surface of the attachment optics, so that an air gap can be avoided.
    It is advantageous, furthermore, if the position holder is made of a plastic, in particular a thermoplastic. Thermoplast is better malleable compared to thermosets.
    It is particularly advantageous if the position holder from a scattered light shading material, ie an opaque material, e.g. is made of black plastic, in particular - for example, black - thermoplastic, so that stray light in particular from adjacent light sources, in particular light emitting diodes is sealed off.
    A further, alternative or preferred additional measure to avoid light losses in the position holder inside is that the position holder is formed such that the contact surface of a light guide (or the light guide) with the position holder is minimized.
    The light guide body thus contacts the position holder only in a narrow contact area, for example in a line running around the respective light guide.
    The individual light-conducting bodies can be held in their position with respect to the light sources particularly well if the position holder has, for each light-guiding body, a receptacle in which the associated light-guiding body is accurately recorded and positioned.
    The recordings are holes or openings in the position holder, with a precisely adapted cross section for the respective light guide; These are inserted into the associated receptacles and held by this position holder in the desired position. PI2580 PI2580 [EQ14: 1 FLÖ | Öi2 / 50l65 -5-
    Since, in particular, the exact positioning of the light exit surfaces is important, it is advantageous if the position holder receives the light guide at their light entry surfaces facing end portions.
    The light guide can thereby protrude slightly backwards from the recording or flush with the position holder.
    Furthermore, it can also be provided that in the receptacles, between the position holder and the Lichtleitkörpem jeweüs a material is inserted, which has a lower refractive index than the material of the light guide.
    In particular, it is advantageous if the material with a lower refractive index surrounds the light guide body such that it does not touch the position holder.
    As a result, the limit angle for total reflection is increased, so that no or only small amounts of light escape from the light guide body.
    In a specific embodiment, it is provided that the Lichtieitkörper are elongated, with a greater extent in the direction of propagation of light than transversely thereto.
    Preferably, it is also provided that each light source in each case comprises one or more light-emitting diodes. Preferably, each light source can be controlled separately and switched on and off accordingly, preferably also dimmable. If a light source consists of a plurality of light-emitting diodes, it may also be advantageous if each of the light-emitting diodes can be activated separately.
    Finally, it is advantageous if the light-emitting bodies have a cross section tapering towards their light-entry surfaces.
    By thus increasing in the direction of light propagation cross sections of Lichtieitkörper the position holder can only be pushed up to a certain point on the Lichtleitkörpem, where it is then fixed, for example by clamping. As an alternative or in addition to the clamping positioning, the position holder can also be used with a holder for the attachment optics already mentioned above, with which holder the attachment optics (to PI2580 PI2580
    -6- [101201 ^ 501 together with the lens and the position holder), for example, is mounted in a light module or in a vehicle headlight, fixed or held in the desired position.
    For example, it can be provided that the light guide body are frusto-conical or trapezoidal.
    In principle, all multi-sided truncated pyramids are suitable, e.g. 6-angular, approximately in the form as wedge-shaped honeycombs. The base shape is closely related to the LED chip arrangements and the desired light entry and exit.
    As already mentioned, the at least one optical attachment is made of a transparent, in particular highly transparent, photoconductive and moldable plastic. For example, the at least one attachment optics made of a poly (organo) siloxane.
    In particular, it is advantageous if the at least one attachment optics is made of a silicone material.
    In the following the invention is discussed in more detail with reference to the drawing. In the drawing shows
    1 shows a lighting device according to the invention in an exploded view,
    2 is a perspective view of the assembled lighting devices according to the invention from Figure 1 in an oblique view from the rear,
    3 is a front lens made of silicone with a number of Lichtleitkörpem,
    4 shows a position holder according to the invention for the Uchtleitkörper an intent optics as shown in Figure 3,
    5 shows a horizontal section through a lighting device according to the invention along the plane B-B in Figure 2, and -7- P12580 -7- P12580, 1
    IlieiäÄ
    Fig. 6 is a vertical section through an illumination device of Figure 2 taken along the plane A-A.
    FIG. 1 shows an illumination device 100 according to the invention for a motor vehicle headlight in an exploded illustration. In this case, the illumination device 100 comprises a number of light sources 1, wherein in a specific embodiment each light source consists of one or more light-emitting diodes.
    Furthermore, the illumination device 100 comprises an attachment optics 2, which is formed from an above-mentioned plastic, in particular from a silicone material. The attachment optics 2 has a light entry surface 2a and a light exit surface 2b.
    As can further be seen, the optical attachment 2 comprises a plurality of optical waveguides 3, wherein each optical waveguide 3 has a light entrance surface 3 a, into which at least one, preferably exactly one, light source 1 supplies light between the light sources (or their light exit surfaces) and the light entry surfaces 3 a there is a narrow gap.
    The light entry surfaces 3a of the individual optical waveguide 3 thus form the Lichteintrittsflä-surface 2a of the optical attachment 2, the light entrance surface 2a of the optical attachment 2 thus consists of a number of individual surfaces 3a.
    The light guide 3 open into the common light exit surface 2b, through which the injected light exits the optical attachment 2 again and is shown as a light distribution in an area in front of a vehicle (based on the situation in which the lighting device is installed in a vehicle). As a rule, the image is generated by secondary optics, for example a lens through which the light emerging from the optical attachment passes.
    The injected light propagates in the Lichtleitkörpem by total reflection on.
    An attachment optics 2 is shown again in a larger illustration in FIG. 3; it can be seen that in the variant shown, the upper row of Lichtleitkörpem 3 in the vertical direction have a greater extent than the Lichtleitkörper 3 in the lower -8-8 ^ © i 10 ^ 5 ^ 012 PI2580
    I
    [102012 / ^ 1 ^ 5 two rows. However, this is merely meant to express that the Lichtieitkörper in principle all the same shape but also any different configurations, depending on the desired light distribution, etc. may have.
    Figure 1 further shows a position holder 4, by means of which the light entry surfaces 3a of the light guide 3 of the optical attachment 3 with respect to the light sources 1 are held in position.
    As can be clearly seen in FIG. 1 and especially in FIG. 4, the position holder 4 in the embodiment shown has a receptacle 4 a for each light guide body 3, in which the assigned light guide body 3 is received and positioned accurately.
    The receptacles are holes or openings in the position holder 4, with a precisely adapted cross section for the respective light guide body 3; the light guide 3 are inserted into the associated receptacles 4a and held by the position holder in the desired position.
    The light guide 3 are elongated in the variant shown, with a greater extent in the direction of propagation of light as transverse to it. In addition, the optical waveguide 3 has a cross-section which extends towards its light entry surfaces 3a. For example, it may be provided that the light guide 3 are frusto-conical or trapezoidal as shown in the figures.
    By thus increasing in the direction of light propagation cross sections of Lichtieitkörper 3, the position holder 4 can be pushed only up to a certain point on the Lichtleitkör-pem 3, where it is then fixed, for example by clamping.
    This situation can be clearly seen in Figures 5 and 6, which show the lighting device 100 according to the invention in the assembled state.
    As can be clearly seen in FIGS. 1, 5 and 6 as well as in FIG. 2, which shows the lighting device in a perspective view in the assembled state, a holder 6 for the optical attachment is additionally provided by means of which holder 6
    Nnt ^ l 1 ^ 05-2012
    PI2580 -9-the attachment optics 2 (together with a lens 5 and the position holder 4), for example, in a light module or in a vehicle headlight is attached.
    With this holder 6 also the position holder 4 is held on the Lichtleitkörpem 3 of the attachment optics 2 such / that the position holder 4 can not slip off the Lichtleitkörpem 3. For this purpose, corresponding stops 4b are provided on the position holder 4, with which the position holder 4 in correspondingly adapted recesses 6a in the holder 6 (see Figure 1, Figure 4) abuts and secured against movement against the light exit direction, and so in the desired position is fixed or held.
    The position holder 4 is advantageously made of a plastic, in particular a thermoplastic. It is particularly advantageous if the position holder 4 is made of a black plastic, in particular black thermoplastic
    One measure for avoiding light losses into the position holder is that the position holder 4 is designed such that the contact surface of a light-emitting body 3 (or the light-conducting body) with the position holder 4 is as small as possible. For this purpose, as shown in FIGS 5 and 6 it can be clearly seen that the receptacles 4a have a tapered cross section towards the rear, this cross section preferably narrowing more than that of the light guide bodies 3. The boundary walls 4a " The receptacles 4a therefore converge more strongly than is the case with the light guide bodies 3, as can be clearly seen in FIGS. 5 and 6, so that the light guide bodies 3 contact the boundary walls 4a 'only in a narrow area, as it were along a line.
    Since, in particular, the precise positioning of the light entry surfaces is of importance, the receivers 4a of the position holder 4 preferably receive the light guide bodies 3, as shown, at their end areas facing the light entry surfaces 3a, wherein the light guide bodies 3 protrude, for example, slightly outwards from the receivers 4a, as shown ,
    By means of a position holder 4, as explained, the light guide bodies or their light entry surfaces can be positioned exactly in relation to the light exit surfaces of the light sources, so that the light losses which would occur in the case of inaccurate positioning can be minimized. PI2580 m -10- (I02bf2i0165
    In addition, such a position holder still has the effect, provided that it is made of a suitable material, such as e.g. from a black thermoplastic, that is from the light sources, e.g. LEDs emerging stray light is intercepted by the position holder.
    Returning once again to FIG. 1, in the illumination device 100 shown, it is further provided that the light exit surface 2 b of the optical attachment 2 made of silicone for stabilizing the shape is provided with a transparent lens 5.
    By such a fixed or rigid lens, the optical attachment can be stabilized in the region of its light exit surface, so that otherwise occurring adverse optical effects can be prevented.
    Of particular Vorteü it is when the light exit surface 2 b of the optical attachment 2 with the transparent lens 5 is encapsulated. For example, this encapsulation takes place by means of a 2-component injection molding process.
    With regard to a high stability of the optical attachment, it is advantageous if the light exit surface 2 b is encapsulated over the entire surface with the transparent lens 5.
    In this case, the attachment optics 2 is first manufactured during manufacture, whereby webs 7 are formed by the tool used. In a second step, the lens 5 is injected, which is then applied to the attachment optics 3unmittelbar, by the injection molding of the webs 7 holds the lens 5 on the attachment optics 2. In the illustration of Figure 1, the lens 5 has slot-shaped openings 8 on However, this is only a fictitious representation in the event that the lens 5 destructive could be separated from the attachment optics 2. In reality, the lens 5 is indeed sprayed directly onto the attachment optics, so that a nondestructive separation as shown in Figure 1 is not possible
    Contrary to the representation in the figures, it would also be possible in a further variant that the holder 6 is sprayed onto the part consisting of attachment optics and lens. -11- PI2580 -11- PI2580 .1 HÖ: 2Ö12 / 50! 65
    It is particularly advantageous if the light exit surface is made of a plastic, preferably of a thermoplastic, in particular preferably of a temperature-resistant thermoplastic, in particular PC.
    However, the lens can also be fixed in the holder 6 for the optical attachment 2, for example clipped or fastened in other known from the prior art manner and is held in such a position in front of the light exit surface of the attachment optics.
    With a lighting device according to the invention, for example, a dipped beam or a high beam can be generated, including, for example, the left headlight and the right headlight each comprise a lighting devices according to the invention, with which each of the left and right part of the light distribution are generated. In the light exit direction in front of the holder 6 is still a secondary optics, usually a lens (not shown) provided by means of which the respective light distribution is generated.
    The lighting device according to the invention can also be used for a reversing light.
    Finally, FIG. 2 once again shows the lighting device 100 according to the invention in the assembled state. Attachment optics 2, position holder 4, lens 5 and holder 6 thereby form a unit, the attachment optics 2 are connected via the position holder 4 and the lens 5 with the holder 6. The light sources 1 are installed separately from this unit in the headlight, as well as the lens, not shown. The holder 6 is connected to the headlight via suitable fasteners and sits, for example, on its own support.
    With suitable fasteners 10, approximately in the form of pins or pins, the holder 6 is thereby fixed in the correct position in the headlight housing with respect to the light sources, the light sources themselves are mounted on a heat sink, not shown.
    权利要求:
    Claims (23)
    [1]


    1. Lighting device (100) for a motor vehicle headlight, comprising • a number of light sources (1), • at least one attachment optics (2), with a light entry surface (2a) and a light exit surface (2b), • wherein the at least one attachment optics (2 ) comprises a plurality of light guide bodies (3), and wherein each light guide body (3) has a light entry surface (3a) into which at least one light source (1) feeds light, and wherein the light guide bodies (3) open into the common light exit surface (2b), and wherein at least one, preferably exactly one position holder (4) is provided, by means of which the light entry surfaces (3a) of the light guide bodies (3) of the at least one attachment optics (2) are held in position with respect to the light sources (1).
    [2]
    2. Lighting device (100) for a motor vehicle headlight, comprising • a number of light sources (1), • at least one attachment optics (2) with a light entry surface (2a) and a light exit surface (2b), • wherein the at least one attachment optics (2) a plurality of light guide bodies (3), and wherein each light guide body (3) has a light entry surface (3a) into which at least one light source (1) feeds light, and wherein the light guide bodies (3) open into the common light exit surface (2b), and wherein the light exit surface (2b) of the at least one attachment optics (2) for stabilizing the form of the at least one attachment optics (2) is provided with a transparent lens (5).
    [3]
    3. Lighting device according to claim 2, characterized in that at least one, preferably exactly one position holder (4) is provided, by means of which the light entry surfaces (3a) of the light guide body (3) with respect to the light sources (1) are held in position ,
    [4]
    4. Lighting device according to claim 1, characterized in that the light exit surface (2b) of the attachment optics (2) for shape stabilization of the attachment optics (2) with a transparent lens (5) is provided
    [5]
    5. Lighting device according to one of claims 2 to 4, characterized in that the light exit surface (2b) of the attachment optics (2) with the transparent lens (5) is encapsulated.
    [6]
    6. Lighting device according to claim 5, characterized in that the light exit surface (2b) with the transparent lens (5) is fully encapsulated.
    [7]
    7. Lighting device according to one of claims 2 to 6, characterized in that the light exit surface is made of a plastic, preferably of a thermoplastic, in particular preferably made of a temperature-resistant thermoplastic, in particular PC.
    [8]
    8. Lighting device according to claim 1 and according to one of claims 3 to 7, characterized in that the position holder (4) is made of a thermoplastic material.
    [9]
    9. Lighting device according to claim 8, characterized in that the position holder (4) made of black plastic, in particular black thermoplastic is made.
    [10]
    10. Lighting device according to one of claims 1 and according to one of claims 3 to 9, characterized in that the position holder (4) is designed such that the contact surface of a light guide (3) with the position holder (4) is as low as possible. -14- -14- 1Ö ^ Ö $ rl0i2 [102012/50165
    [11]
    11. Lighting device according to claim 1 and according to one of claims 3 to 10, characterized in that the position holder (4) for each light guide (3) has a receptacle (4a), in which the associated light guide (3) is accurately recorded and positioned ,
    [12]
    12. Lighting device according to one of claims 1 and according to one of claims 3 to 11, characterized in that the position holder (4) receives the light guide body (3) at their the light entry surfaces (3a) facing end portions.
    [13]
    13. Lighting device according to claim 11 or 12, characterized in that in the receptacles (4a), between the position holder (4) and the Lichtleitkörpem (3) jeweüs a material is inserted which has a lower refractive index than the material of the light guide (3) ,
    [14]
    14. Lighting device according to claim 13, characterized in that the material with a lower refractive index surrounds the light guide body (3) in such a way that it does not touch the position holder (4).
    [15]
    15. Lighting device according to one of claims 1 to 14, characterized in that the light guide body (3) are elongated, with a greater extent in the propagation direction of the light than transversely thereto.
    [16]
    16. Lighting device according to one of claims 1 to 15, characterized in that each light source comprises one or more light-emitting diodes.
    [17]
    17. Lighting device according to one of claims 1 to 16, characterized in that the light guide body (3) have a to their light entry surfaces (3a) towards tapered cross-section.
    [18]
    18. Lighting device according to one of claims 1 to 17, characterized in that the light guide body (3) are frusto-conical or trapezoidal in shape.
    [19]
    19. Lighting device according to one of claims 1 to 18, characterized in that the at least one attachment optics (2) is made of a transparent, in particular highly transparent, photoconductive and moldable plastic. iPririted: 10-05: 2Ö12 (ΕΘ14.1 [102012/50165 Fl2580 -15-
    [20]
    20. Lighting device according to one of claims 1 to 19, characterized in that the at least one attachment optics (2) is made of a silicone material.
    [21]
    21. Lighting device according to one of claims 1 to 19, characterized in that the at least one attachment optics (2) is made of a poly (organo) siloxane.
    [22]
    22. Light module with at least one illumination device according to one of claims 1 to 21.
    [23]
    23. A vehicle headlight with at least one illumination device according to one of claims 1 to 21 and / or with at least one light module according to claim 22.
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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 |
    2019-01-15| MM01| Lapse because of not paying annual fees|Effective date: 20180509 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50165/2012A|AT512865B1|2012-05-09|2012-05-09|Lighting device for a motor vehicle headlight and light module and motor vehicle headlight with lighting device|ATA50165/2012A| AT512865B1|2012-05-09|2012-05-09|Lighting device for a motor vehicle headlight and light module and motor vehicle headlight with lighting device|
    JP2015510569A| JP6202286B2|2012-05-09|2013-04-30|Lighting equipment for automotive headlamps|
    MX2014013605A| MX337001B|2012-05-09|2013-04-30|Lighting device for a motor vehicle headlight.|
    US14/395,998| US9664847B2|2012-05-09|2013-04-30|Lighting device for a motor vehicle headlight|
    CN201380024423.0A| CN104272013B|2012-05-09|2013-04-30|The lighting apparatus of front headlight of motor vehicle, optical module and automobile front|
    EP13728669.6A| EP2847509B1|2012-05-09|2013-04-30|Lighting device for a motor vehicle headlight|
    EP15194501.1A| EP3001099B2|2012-05-09|2013-04-30|Lighting device for a motor vehicle headlight|
    PCT/AT2013/050100| WO2013166535A2|2012-05-09|2013-04-30|Lighting device for a motor vehicle headlight|
    BR112014026137A| BR112014026137A2|2012-05-09|2013-04-30|lighting device for a motor vehicle headlamp|
    IN1954MUN2014| IN2014MN01954A|2012-05-09|2014-09-29|
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