• 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 pointing adjustment method is provided for a vehicle headlight which performs a pointing adjustment on the basis of a reference point on a light-dark boundary of a light distribution pattern, the method comprising setting, as a reference point, an intersection (EP1, EP2) between a vertical light-dark boundary (Lf1; Lf1, Lf2) of a portion of multi-divided light distribution patterns which are to be synthesized to form a configuration of a high beam light distribution (Hb) and a horizontal dark-light limit (CF1, CF3) of a low beam light distribution pattern (Lb).
    公开号:FR3073467A1
    申请号:FR1860459
    申请日:2018-11-13
    公开日:2019-05-17
    发明作者:Atsushi Sugimoto
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    This application claims priority from Japanese patent application No. 2017-218762, filed on November 14, 2017.
    Aspects of the present invention relate to a pointing adjustment method for a vehicle headlight, a pointing adjustment mechanism for a vehicle headlight, and a vehicle headlight, which adjust a direction of irradiation d 'a light distribution configuration.
    Document JP-A-2007-190986 (paragraph [0021]) describes a method for detecting an inflection point which is an intersection of a cut-off line between the horizontal light and dark limit HC and an oblique light-dark boundary cutoff line CC of a low beam headlamp light distribution pattern, and performing a headlight pointing adjustment using the detected inflection point as a reference point.
    In a headlight using an adaptive driving beam system (ABD) with a row of light emitting diodes comprising a plurality of light emitting diodes which can be switched on and off individually, light emitting diodes which have an irradiation range within a range target objects such as a preceding vehicle, an approaching vehicle, or a pedestrian, which are detected by a camera or the like are turned off so as not to dazzle the target objects, with the result that a configuration of distribution of high beam light intended to illuminate only a required range is illuminated.
    In general, a light unit which lights a high beam configuration by synthesizing multi-divided light distribution configurations, such as a row of light emitting diodes, is integrated with a light unit which lights a configuration of low beam in the lighthouse as exposed in the document JP-A-2007-190986, or can be formed separately. The high beam unit attached to the low beam unit may deviate from a predetermined fixing position from the low beam unit due to an error Manufacturing.
    In a headlight comprising a low beam unit integrated into a high beam unit, an irradiation position of a low beam configuration is adjusted when a pointing adjustment is made using an inflection point as in document JP-A-2007-190986 as a reference point. However, the irradiation position of a high beam light distribution configuration is not adjusted due to the manufacturing error. In addition, in the high beam unit provided separately from the low beam unit in the headlight, the irradiation position of the high beam configuration is not adjusted even if the setting Pointing of the dipped beam configuration is achieved using the inflection point of document JP-A-2007-190986 as a reference point.
    In a case where the light irradiation position deviates from a predetermined position due to the manufacturing error or a poor pointing adjustment precision, so that light is not irradiated on objects such as the preceding vehicle, the approaching vehicle, the pedestrian or equivalent even if the irradiation range varies due to the position difference, the headlight using the adaptive driving beam system (ABD) ) adopts an excessively wide extinction range. This excessive extinction range adopted due to the deviation from the light irradiation position can narrow a lighting range of a vehicle.
    [0008] Consequently, one aspect of the present application provides a pointing adjustment method for a vehicle headlight, a pointing adjustment mechanism for a vehicle headlight and a vehicle headlight which can illuminate a light distribution configuration. high beam by synthesizing multi-divided light distribution configurations without excessive extinction range.
    According to an embodiment of the present invention, there is provided a pointing adjustment method for a vehicle headlight which performs a pointing adjustment on the basis of a reference point on a light-dark limit of a light distribution configuration. The method includes establishing, as a point of reference, an intersection between a vertical light-dark boundary of a portion of multi-divided light distribution patterns which are to be synthesized to form a high beam light distribution pattern and a horizontal light-dark boundary of a low beam light distribution pattern.
    According to the above configuration, the accuracy of the irradiation position of the multi-divided light distribution configurations is improved by the pointing adjustment in which the intersection between the vertical dark limit of the part of the distribution configurations of multi-divided light and the horizontal dark limit of the low beam light distribution configuration is set as a reference point.
    According to another embodiment of the present invention, there is provided a pointing adjustment mechanism for a vehicle headlight comprising a light unit, the light unit comprising inside a light headlight unit of a road which is configured to illuminate a high beam light distribution pattern by synthesizing multi-divided light distribution patterns, and a low beam headlamp unit which is configured to illuminate a beam light distribution pattern crossing. The pointing adjustment mechanism includes a lighting mode for the pointing adjustment which causes the high beam headlight unit to illuminate a portion of the multi-divided light distribution patterns and causes the headlight unit to illuminate the low beam light distribution configuration, so as to form an intersection between a vertical dark-light limit of the multi-divided light distribution configuration and a horizontal dark-light limit of the distribution configuration of low beam light.
    According to the above configuration, in the fire unit in the lighting mode for the pointing adjustment, the intersection between the vertical light-dark limit of the part of the multi-divided light distribution configurations and the horizontal light-dark limit of the low beam light distribution pattern is formed as the reference point of the pointing adjustment.
    According to another embodiment, a vehicle headlight is provided which includes the pointing adjustment mechanism.
    According to the above configuration, the reference point of the pointing adjustment is illuminated on the vertical light-dark limit of the part of the multi-divided light distribution configurations via the horizontal light-dark limit of the low beam light distribution configuration by turning on the vehicle headlight light unit in a lighting mode for pointing adjustment.
    According to the pointing adjustment method for a vehicle headlight described above, the irradiation position accuracy of the multi-divided light distribution configurations is improved, so that it is possible to illuminate a high beam light distribution pattern with a wide illumination range in which the excessive extinction range of the high beam light distribution pattern formed by synthesizing the multi-divided light distribution patterns can be scaled down.
    According to the pointing adjustment mechanism for a vehicle headlight described above and the vehicle headlight comprising the latter, the lighting mode for a pointing adjustment is provided, so that the position accuracy of the multi-divided light distribution patterns is improved, and therefore, it is possible to illuminate the high beam light distribution pattern in the light unit with a wide lighting range in which the excessive extinction range of the high beam light distribution pattern formed by synthesizing the multi-divided light distribution patterns can be reduced.
    Figure 1 is a front view of a vehicle headlight according to a first embodiment to be used for the pointing adjustment.
    FIG. 2A is a sectional view along line II of FIG. 1 in which the vehicle headlight of the first embodiment is in section in a transverse direction, and FIG. 2B is a sectional view along line II- II of Figure 1 in which a high beam headlight unit of the vehicle of the first embodiment is sectioned in a vertical direction.
    Figure 3 is a front view of a vehicle headlight according to a second embodiment to be used for pointing adjustment.
    Figure 4A is a sectional view along line III-III of Figure 3 in which the vehicle headlight of the second embodiment is sectioned in a transverse direction, and Figure 4B is a sectional view along the line IV-IV of Figure 3 in which a high beam headlight unit of the vehicle of the second embodiment is sectioned in a vertical direction.
    Figure 5A is a diagram showing light distribution patterns illuminated by headlight units of the first embodiment before pointing adjustment, Figure 5B is a diagram illustrating a conventional pointing adjustment method in a vehicle headlight , and FIG. 5C is a diagram illustrating a method of pointing adjustment by the vehicle headlight of the first embodiment.
    FIG. 6A is a diagram illustrating light distribution configurations lit by headlight units of the second embodiment before a pointing adjustment, FIG. 6B is a diagram illustrating a pointing adjustment method of a distribution configuration of high beam light by the vehicle headlight of the second embodiment, and Fig. 6C is a diagram illustrating a pointing adjustment method of a low beam light distribution pattern by the headlight of the vehicle the second embodiment.
    Hereinafter, embodiments of the present invention will be described below with reference to Figures 1 to 6C. In each drawing, directions of each part of the vehicle headlight and the directions of the road seen by a driver of a vehicle equipped with the vehicle headlight are expressed as follows: top; low; left; right; before; back.
    A vehicle headlight according to a first embodiment to be used for the pointing adjustment will be described with reference to Figures 1 to 2C. A vehicle headlight 1 of the first embodiment is an example of a left headlight, and includes a light body 2, a front cover 3, and a headlight unit 5. The light body 2 is formed of resin or equivalent and has an opening on a front side of the vehicle, and the front cover 3 is formed of resin allowing light to pass through, made of glass, or the like, and is fixed on the opening of the lamp body 2 so as to form a chamber fire S inside. The headlight unit 5 shown in Fig. 1 is configured by integrating a low beam headlight unit 6 and a high beam headlight unit 7 on a metal support member 4, and is disposed on an inner side from the fire chamber S.
    The support element 4 of Figure 2A and Figure 2B is formed of metal, and has a base plate portion 4a for fixing the low beam headlight unit 6 and the headlight unit of main beam 7, and screw fixing parts 4b provided on the base plate part 4a in two positions on lower left and lower right sides and one position on an upper right side.
    The low beam headlight unit 6 includes a main body 8, a light source 9, a reflecting mirror 10, a projection lens 11, a mask 12, and a heat sink 13 shown in Figure 2A . The main body 8 is formed of metal, and the light source 9 is configured by one or a plurality of light emitting elements 9a, such as light emitting diodes or laser diodes comprising a fluorescent substance, which generate light. white light and a substrate 9b, and is fixed on an upper surface of the main body 8. The reflecting mirror 10 has a spheroidal surface 10a which surrounds the light source 9 and is fixed on the upper surface of the main body 8 to reflect towards the before the light B1 emitted by the light source 9.
    The projection lens 11 of Figure 2A is a transparent or semi-transparent pian-convex lens, is fixed to a front end of the main body 8 so as to be in front of the reflecting mirror 10, and transmits light B1 towards the front. The mask 12 is provided between the reflecting mirror 10 serving as part of the upper surface of the main body 8 and the projection lens 11, and blocks part of the light B1 to form horizontal cut lines CFI, CF3 and a line of oblique cut CF2 of a low beam light distribution configuration Lb as shown in FIG. 5A.
    In FIG. 2A, the light B1 passing through the mask 12 passes sequentially through the projection lens 11 and the front cover 3, and illuminates a configuration of distribution of low beam light Lb on a front side of it. The heat sink 13 is configured by a plurality of metal heat radiating fins 13a and a cooling fan 13b. The main body 8 is fixed on a front face 4c of the base plate part 4a, and the heat radiation fins 13a are fixed on a rear face 4d of the base plate part 4a on a rear side of the main body 8. Heat from the light source 9 is transmitted sequentially to the substrate 9b, the main body 8, the base plate portion 4a, and the plurality of heat radiation fins 13a, and is radiated to the fire chamber S by the cooling fan 13b. The high beam headlight unit 7 includes a row of light emitting diodes 16 which is a light source, a projection lens 17, a lens holder 18, and a heat sink 19, as shown in Figure 2A. The array of light emitting diodes 16 includes a plurality (eight in the embodiment) of light emitting elements (a light emitting diode comprising phosphorus) 16a which generates white light and a substrate 16b. The number of light emitting elements 16a is not limited to eight, and the row of light emitting diodes 16 can be configured as a row of laser light in which a plurality of laser diodes which generate white light can be used as light emitting elements. The substrate 16b is fixed to the front face 4c of the base plate part 4a by a plurality of screws 20 with the light emitting elements 16a facing forward. The projection lens 17 is a transparent or semi-transparent plano-convex lens.
    The lens holder 18 has a front end lens fixing part 18a which is a cylindrical element formed of resin or equivalent, and a rear end rim part 18b. In the lens holder
    18, the projection lens 17 is fixed to the lens fixing part 18a, and the rim part 18b is fixed to the front face 4c of the base plate part 4a while surrounding the interior of the row of diodes electroluminescent 16. The heat sink 19 is formed by a plurality of metal heat radiating fins 19a and a cooling fan 19b, and the heat radiating fins 19a are fixed on the rear face 4d of the plate portion of base 4a on a rear side of the row of light emitting diodes 16. Heat generated by the light emitting elements 16a of the row of light emitting diodes 16 is transmitted sequentially to the substrate 16b, to the base plate portion 4a, and to the plurality of heat radiation fins 19a, and is radiated towards the fire chamber S by the cooling fan 19b.
    The light source 9 of the low beam headlight unit 6 and the row of light emitting diodes 16 of the high beam headlight unit 7 are electrically connected to a control unit 21 provided on the body lamp 2 in the fire chamber S, and the control unit 21 controls the light-emitting element 9a and the light-emitting element 16a so as to be switched on and off individually. The plurality of light emitting elements 9a can be controlled by the control unit 21 so as to be totally on or off.
    B2 light emitted from the plurality of light emitting elements 16a of the row of light emitting diodes 16 shown in Figures 1 to 2B passes through the front cover 3 while being collimated by the lens projection 17, and illuminates a high beam light distribution pattern Hb formed by synthesizing rectangular multi-divided light distribution patterns Hbl to Hb4 with rounded corners, as shown in Figure 5A which are illuminated by the respective light emitting elements 16a. In Figure 2A, Figure 5A in Figure 6C, for convenience of the description, it is assumed that only four of the eight light emitting elements 16a are on.
    As shown in Figures 1 to 2B, an extension reflector 22 for visual protection from the front is provided around the low beam headlight unit 6 and the headlight unit main beam 7. The support member 4 on which the low beam headlight unit 6 and the high beam headlight unit 7 are fixed is supported by the light body 2 by screwing three pointing screws 23 which are rotatably held in the light body 2 on the screw fixing parts 4b of the base plate part 4a.
    The support element 4 configures a pointing adjustment mechanism 24 for the vehicle headlight 1 of the first embodiment, associated with the control unit 21 and the three pointing screws 23. Since the unit low beam headlight 6 and high beam headlight unit 7 are fixed on the common support member 4, the headlight units are tilted integrally up, down, left and to the right by independently rotating each pointing screw 23, so as to carry out the pointing adjustment.
    A vehicle headlight 31 of a second embodiment to be used in the pointing adjustment method will then be described with reference to Figures 3 to 4B. In the vehicle headlight 1 of the first embodiment, since the low beam headlight unit 6 and the high beam headlight unit 7 are provided in one piece on the common support member 4 to be tilted in one piece, the pointing adjustment cannot be carried out on a light source unit dredge, but in the vehicle headlight 31 of the second embodiment, the fire headlight unit The dipped beam and the high beam headlight unit can be tilted independently to allow independent aiming adjustment.
    The vehicle headlight 31 of the second embodiment shown in Figures 3 to 4B has a configuration similar to the vehicle headlight 1 of the first embodiment except that a light body 32, support elements made of metal 33, 34 and three pointing screws 35, 36 are provided in place of the light body 2, the support element 4 and the three pointing screws 23.
    The fire body 32 shown in Figures 3 to
    4B is formed of resin or equivalent and has an opening on the front side of the vehicle, and the front cover 3 is fixed on the opening so as to form the fire chamber S inside. The three pointing screws 35 and the three pointing screws 36 are rotatably supported in the fire body 32 inside the fire chamber S.
    The support member 33 shown in Figure 4A is formed of metal, and has a base plate portion 33a for fixing the dipped headlight unit 6, and screw fixing portions 33b provided on the base plate portion 33a in two positions on the lower left and right sides, and provided in one position on the upper right side. In the second embodiment, the main body 8 of the low beam headlight unit 6, on which the light source 9, the reflecting mirror 10, and the projection lens 11 are fixed, is fixed on a front face 33c of the base plate part 33a, and the heat radiation fins 13a are fixed on a rear face 33d of the base plate part 33a on a rear side of the main body 8.
    As shown in Figure 4A, the support member 33 on which the low beam headlight unit 6 is fixed is supported by the light body 32 by separately screwing the three pointing screws 35 which are rotatably held in the light body 32 on the screw fixing portions 33b. The support element 33 configures a first pointing adjustment mechanism 37 for the low beam headlight unit 6 of the second embodiment with the control unit 21 and the three pointing screws 35. The unit dipped beam headlight 6 of the second embodiment is tilted up, down, left and right by independently rotating each pointing screw 35, so as to achieve the pointing adjustment.
    As shown in Figure 4A, light B3 emitted from the light source 9 of the second embodiment is reflected forward by the reflecting mirror 10, and passes through the lens of projection 11 and the front cover 3 while being partially masked by the mask 12, so as to illuminate the low beam light distribution configuration Lb comprising the horizontal cut lines CFI, CF3 and the oblique cut line CF2 like this is shown in Figure 5A on a front side of the vehicle (not shown).
    The support member 34 shown in Figure 4A is formed of metal, and has a base plate portion 34a for fixing the headlight unit 7, and screw fixing portions 34b provided on the base plate portion 34a in two positions on the lower left and right sides and one position on the upper right side. In the second embodiment, the row of light-emitting diodes 16 of the high beam headlight unit 7 and the lens holder 18 on which the projection lens 17 is fixed are fixed on a front face 34c of the part of base plate 34a by screws 20 or equivalent, and the heat radiation fins 19a are fixed to a rear face 34d of the base plate part 34a on a rear side of the row of light-emitting diodes 16.
    As shown in Figure 4A, the support member 34 on which the main beam headlight unit 7 is fixed is supported by the light body 32 by separately screwing the three pointing screws 36 which are rotatably held in the light body 32 on the screw fixing portions 34b. The support member 34 configures a second pointing adjustment mechanism 38 for the high beam headlight unit 7 of the second embodiment with the control unit 21 and the three pointing screws 36. The unit main beam headlight 7 of the second embodiment is tilted up, down, left and right by independently rotating each pointing screw 36, so as to achieve the pointing adjustment.
    The plurality of light emitting elements 16a of the row of light emitting diodes 16 of the second embodiment shown in Figure 4A and Figure 4B is turned on and off based on a command from the control unit 21. Light B4 emitted by the light emitting elements 16a passes through the front cover 3 after being collimated by the projection lens 17, and illuminates a high beam light distribution pattern Hb formed by synthesizing the multi-divided light distribution patterns Hbl to Hb4, having a rectangular shape with rounded corners which is illuminated by each of the light emitting elements 16a, as shown in Figure 5A. In FIGS. 4A to 6C, for the convenience of the description, it is assumed that only four of the eight light-emitting elements 16a are on.
    headlight Since the unit of the high beam headlight unit making a low beam 6 and: 7 of the first form is a support in one piece, the distribution of high beam light is fixed tilted shown in the on the element of and the figure are common 4 and configuration Hb shown
    2A in Figure 5A is also toggled in one piece with the low beam light distribution configuration Lb during the pointing adjustment. However, the low beam headlight unit 6 and the high beam headlight unit 7 of the second embodiment are fixed to the support members 33, 34 which can be tilted independently and the pointing adjustment can be performed independently, so that the high beam light distribution pattern Hb shown in Figure 5A is also switched independently of the low beam light distribution configuration Lb during the pointing adjustment so as to adjust a relative position relation between them.
    As one of the methods of controlling the row of light-emitting diodes 16, the control unit 21 of the vehicle headlights 1, 31 of the first and second embodiments shown in FIG. 2B and FIG. 4B has a mode for the aiming adjustment in which only a predetermined light emitting element 16a which forms a vertical dark-dark boundary of the multi-divided light distribution patterns Hbl to Hb4 is turned on in a center of the light distribution pattern when the row of light emitting diodes 16 is fully lit. In the first and second embodiments, in order to establish a vertical light-dark boundary Lfl which is a left side of a multidivided light distribution pattern Hb3 among the multi-divided light distribution patterns Hbl to Hb4 as a reference for left-right pointing adjustment, the control unit 21 only illuminates the Hb3 multi-divided light distribution configuration in the lighting mode for pointing adjustment.
    In the lighting mode for a pointing adjustment, it may be more energy efficient to switch on only the predetermined electroluminescent element 16a corresponding to the configuration of multi-divided light distribution Hb3, but the pointing adjustment can be made as long as the vertical dark limit Lfl of the multi-divided light distribution pattern Hb3 is formed. Therefore, in the lighting mode for the pointing adjustment, as long as the multi-divided light distribution pattern Hb3 is lit without illuminating the multi-divided light distribution pattern Hb2 which overlaps the vertical light-dark limit Lfl , the other multi-divided light distribution configurations can be illuminated.
    The vehicle headlights 1, 31 of the first and second embodiments shown in Figures 1 to 4A are formed as an adaptive driving beam headlight, and detection results relating to approaching vehicles, pedestrians , or equivalent on the road which are detected by a camera on board the vehicle (not shown) are returned by the control unit 21. For example, when an approaching vehicle, a pedestrian, or the like is detected in a Hb4 irradiation area in a state where all of the distribution patterns of
    Hbl to Hb4 multi-divided light only illuminating are on, the unit an emission element
    Hb4 to prevent dazzling for a driver or pedestrian.
    However, upward detection camera, control worm 21 off of light 16a which generation of vehicle light approaching high beam can be fixed on one and can oscillate can the headlight unit (not shown) which can bottom, left and right headlight of a vehicle or a vehicle by deviating from predetermined assembly positions due to a manufacturing error or equivalent. In this case, light distribution since the multi-divided configurations formed by light 16a of the row of light-emitting diodes 16 are irradiated by having a deviation from a predetermined direction due to the manufacturing error, even if the elements of light emission 16a are turned off based on the detection result of the detection camera emission elements, the emission elements
    16a can vehicle which lit up remaining dazzling towards equivalent.
    emission of light radiating light approaches, the a range should be extinguished by detection can so as to prevent pedestrian error, or elements therefore, light 16a which position wide of the
    By comparison to established quite dazzling, in fact being light manufacturing or irradiating the approaching vehicle, the assembly, pedestrian, or equivalent.
    Such an adjustment would excessively narrow the irradiation range of the high beam light distribution configuration of the adaptive driving beam headlight, so that an improvement in pointing adjustment precision in the unit of high beam headlamp is required in the adaptive driving beam headlamp. Therefore, the vehicle headlights 1, 31 of the first and second embodiments have the advantage of improving the pointing accuracy of the high beam headlight unit compared to the conventional headlight unit.
    The pointing adjustment method by the vehicle headlight 1 of the first embodiment will be described with reference to Figures 5A to 5C. When the low beam headlight unit 6 and the high beam headlight unit 7 in Fig. 2A are turned on, and the low beam light distribution pattern Lb and the low beam light distribution pattern of road Hb which is formed by the multi-divided light distribution configurations Hbl to Hb4, are irradiated on a front side of the vehicle (not shown), an image as shown in FIG. 5A is obtained. The reference 011 designates a predetermined position in which an inflection point (reference point) of the irradiated low beam light distribution configuration must appear, and the reference 012 designates a predetermined position in which an inflection point of the Hb irradiated high beam light distribution pattern should appear. Pointing adjustment is achieved by tilting the low beam headlight unit 6 and the high beam headlight unit 7 so that the inflection point established in advance on the light-dark limit of the configuration coincides with a predetermined position.
    The light-dark limit of the light distribution configuration is determined so that a light distribution configuration is illuminated on a screen provided on a front side of a vehicle (not shown) to carry out a measurement. visual by a measurement team, to measure brightness gradients inside and outside an irradiation range of light distribution configurations, and to analyze a photograph or an image lit on the screen or equivalent.
    In a conventional pointing adjustment method, a center of the low beam light distribution configuration Lb shown in FIG. 5A, that is to say an EPI intersection between the horizontal light-dark limit CFI formed by a cut line on a lower side and the oblique light-dark limit CF2 formed by an oblique cut line is established as an inflection point, only the low beam light distribution configuration Lb is lit as it is shown in Figure 5B and the headlight unit is tilted so that the EPI inflection point coincides with the predetermined position 011. However, in a case where a relative assembly position of the light headlight unit main beam 7 with respect to the low beam headlight unit 6 deviates from the predetermined position due to a manufacturing error, an assembly error or equivalent, the limit light-dark vertic ale Lfl of the multi-divided light distribution pattern Hb3 to be used as a reference for a left-right pointing adjustment of the high beam light distribution configuration Hb does not pass through the predetermined position 012 as is shown in Figure 5B.
    In this case, even if the low beam light distribution configuration Lb can be irradiated in a predetermined direction, the light distribution configurations Hbl to Hb4, which are used in the adaptive driving beam headlight, cannot be irradiated in the predetermined direction, and the multi-divided light distribution patterns Hbl to Hb4 may need to be turned off excessively to avoid dazzling the approaching vehicle, pedestrian, or the like are detected.
    Consequently, in the aiming adjustment method using the vehicle headlight 1 of the first embodiment shown in FIG. 2A and in FIG. 2B, the aiming adjustment is carried out using an intersection EP2 between the clear limit - dark horizontal CFI on the lower side of the low beam light distribution configuration Lb and the vertical light-dark limit Lfl of the multi-divided light distribution configuration Hb3 which illuminates part of the light distribution configuration Hb high beam shown in Figure 5A as a point of inflection.
    Consequently, in the aiming adjustment method, the low beam headlight unit 6 is switched on first, the high beam headlight unit 7 is also switched on in the lighting mode for the pointing adjustment, so that only the low beam light distribution pattern Lb and the multi-divided light distribution pattern Hb3 are turned on as shown in Figure 5C, and the inflection point EP2 which is an intersection between the horizontal dark-light limit CFI and the vertical dark-clear limit Lfl is formed in a position shown in FIG. 5A. The low beam headlight unit 6 and the high beam headlight unit 7 are tilted in one piece by the pointing adjustment mechanism 24 so that the inflection point EP2 coincides with the position predetermined 012 as shown in Figure 5C.
    Even if the Lb low beam light distribution configuration deviates from the predetermined position of the error, the difference is in a predetermined reference value assumed, and the light distribution configuration is a distribution of light downward, so that the problem of dazzling light for a pedestrian, an approaching vehicle or the like is less likely to arise compared to the high beam distribution configuration Hb. Therefore, it can be said that the pointing method is advantageous in the adaptive driving beam headlamp comprising the pointing adjustment mechanism 24 as in the first embodiment in which the dipped beam headlamp unit 6 and 1 The main beam headlight unit 7 can only be tilted in one piece.
    In addition, in the pointing adjustment method using the vehicle headlight 31 of the second embodiment shown in Figure 4A and Figure 4B, the EPI inflection point of the fire light distribution configuration beam Lb shown in Figure 6A and an inflection point EP3 of the multi-divided light distribution pattern Hb3 which forms part of the high beam light distribution pattern Hb are set separately, and the setting of pointing of the low beam headlight unit 6 and of the high beam headlight unit 7 is carried out independently.
    An image analysis is carried out on the vertical light-dark limit Lfl and the horizontal light-dark limit Lf2 of the configuration of multi-divided light distribution Hb3 represented in FIG. 6A and FIG. 6B by a hand-held camera. vehicle edge (not shown) and the control unit 21. Next, the inflection point EP3 of the multi-divided light distribution configuration Hb3 shown in FIGS. 6A to 6C is established as an intersection of their lines d 'virtual extension.
    The reference 02 in Figure 6A and Figure 6B denotes a predetermined position in the laguelle the inflection point EP3 of the irradiated multi-divided light distribution configuration Hb3 must appear, and the a predetermined position in inflection PPE of the fire light distribution beam must appear.
    represented in the configuration reference 03 designates point from which the irradiated crossing configuration of
    Lb is of this As headlight beam pointing light adjustment Hb is made as in Figure 6B, distribute it so that the multi-divided light distribution configuration Hb3 which forms part of the configuration of high beam light distribution Hb is illuminated in a state where the low beam light distribution configuration Lb is turned off, and the high beam headlight unit 7 is tilted by operating the second pointing adjustment mechanism 38 so that the inflection point EP3 of the multi-divided light distribution configuration Hb3 established by the image analysis coincides with the predetermined position 02.
    As shown in Figure 6C, the pointing adjustment of the low beam light distribution configuration Lb is achieved in such a way that the low beam headlight unit 6 is tilted by operating the first pointing adjustment mechanism 37 so as to cause the PPE inflection point of the low beam light distribution configuration Lb to coincide with the predetermined position 03, where the PPE inflection point is illuminated by switching on the configuration of Lb low beam light distribution in a state where the high beam light distribution pattern Hb, including the multi-divided light distribution configuration Hb3, is not fully illuminated.
    According to the pointing method, the multi-divided light distribution configurations Hbl to Hb4 which are used in the adaptive driving beam headlight can be irradiated in a predetermined direction, and consequently, an excessive extinction of the configurations of multi-divided light distribution Hbl to Hb4 to prevent glare from an approaching vehicle or the like can be avoided, so that a high beam light distribution configuration Hb with a wide irradiation range can be formed, and the low beam light distribution pattern Lb can also be irradiated with high precision in the predetermined direction. Therefore, the pointing method may be advantageous for the adaptive driving beam headlight comprising the first and second pointing adjustment mechanisms 37, 38 as in the second embodiment whereby the low beam headlight unit 6 and the main beam headlight unit 7 can be tilted independently.
    权利要求:
    Claims (3)
    [1" id="c-fr-0001]
    1. Pointing adjustment method for a vehicle headlight (1; 31) which performs pointing adjustment on the basis of a reference point on a light-dark limit of a light distribution configuration, the method comprising the fact of :
    establish, as a point of reference, an intersection (EPI, EP2; EP3) between a vertical light-dark limit (Lfl; Lfl, Lf2) of a part of multi-divided light distribution configurations which must be synthesized to form a high beam light distribution pattern (Hb) and a horizontal light-dark limit (CFI, CF3) of a low beam light distribution pattern (Lb).
    [2" id="c-fr-0002]
    2. Pointing adjustment mechanism for a vehicle headlight (1; 31) comprising a light unit (5), the light unit (5) comprising inside a main beam headlight unit (7) which is configured to illuminate a high beam light distribution pattern (Hb) by synthesizing multi-divided light distribution patterns, and a low beam headlamp unit (6) which is configured to illuminate a low beam configuration distribution of low beam light (Lb), the pointing adjustment mechanism (24; 37, 38) comprising a lighting mode for pointing adjustment which brings the high beam headlight unit (7) to illuminate a portion of the multi-divided light distribution patterns and cause the low beam headlight unit (6) to illuminate the low beam light distribution pattern (Lb), so as to form an intersection (PPE) , EP2; EP3) between a light-dark boundary vertical (Lfl; Lfl, Lf2) of the multi-divided light distribution pattern and a dark horizontal clair5 limit (CFI, CF 3) of the light distribution of light crossing configuration (Lb).
    [3" id="c-fr-0003]
    3. Vehicle headlight comprising the pointing adjustment mechanism (24; 37, 38) according to claim 2.
    类似技术:
    公开号 | 公开日 | 专利标题
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    FR3049336A1|2017-09-29|VEHICLE FIRE AND VEHICLE PROVIDED WITH SAID FIRE
    FR2861833A1|2005-05-06|HEADLAMP WITH MULTIPLE LAMPS
    FR2889869A1|2007-02-23|LAMP FOR VEHICLE
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    JP5719697B2|2015-05-20|Vehicle headlamp device
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    EP2871406A1|2015-05-13|Primary optical element, lighting module and headlight for motor vehicle
    FR3051884A1|2017-12-01|VEHICLE LAMP
    FR2868510A1|2005-10-07|LIGHT EMITTING LIGHT FOR A VEHICLE
    JP5442463B2|2014-03-12|Vehicle headlamp
    FR3011908B1|2019-08-30|LAMP FOR VEHICLE
    FR2868511A1|2005-10-07|HEADLAMP WITH DECOUPLED BULB
    FR2863343A1|2005-06-10|HEADLIGHT WITH SEVERAL PHOTOEMISSIVE ELEMENTS
    JPWO2016024489A1|2017-06-29|Vehicle headlamp
    FR2823833A1|2002-10-25|Automobile headlamp unit has auxiliary reflectors above and below optical axis between rear reflector and front projection lens
    FR2922296A1|2009-04-17|PROJECTION MODULE FOR A MOTOR VEHICLE HEADLIGHT.
    FR2934669A1|2010-02-05|LIGHTING SYSTEM FOR A MOTOR VEHICLE
    FR3026463A1|2016-04-01|LAMP FOR VEHICLE
    EP3002504A2|2016-04-06|Lighting module for lighting and/or signalling of a motor vehicle
    FR2860060A1|2005-03-25|Vehicle headlight, has one additional reflector placed between light source and shutter, and another additional reflector reflecting light reflected by former reflector along and close to optical axis
    FR3050253A1|2017-10-20|VEHICLE FIRE AND VEHICLE COMPRISING THE SAME
    EP3167226A1|2017-05-17|Lighting module for a motor vehicle
    FR2934668A1|2010-02-05|LUMINOUS MODULE OF A LIGHTING SYSTEM FOR A MOTOR VEHICLE
    FR2824623A1|2002-11-15|VEHICLE HEADLIGHT WITH COMPOSITE LIGHT DISTRIBUTION DIAGRAM
    同族专利:
    公开号 | 公开日
    CN109780501A|2019-05-21|
    US20190143885A1|2019-05-16|
    DE102018219271A1|2019-05-16|
    FR3073467B1|2021-06-04|
    JP2019089424A|2019-06-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2007190986A|2006-01-18|2007-08-02|Koito Mfg Co Ltd|Detection method of light distribution pattern center|
    JP2017218762A|2016-06-06|2017-12-14|嘉義 辻本|Underwater resource recovery system|
    JP4749968B2|2006-07-31|2011-08-17|株式会社小糸製作所|Vehicle headlamp|
    JP2010000957A|2008-06-20|2010-01-07|Koito Mfg Co Ltd|Headlight device for vehicle|
    JP5199781B2|2008-08-11|2013-05-15|株式会社小糸製作所|Vehicle headlamp device|
    DE102015012568A1|2015-09-25|2017-03-30|GM Global Technology Operations LLC |Headlight device for a vehicle and method for controlling the headlight device|EP3438525B1|2017-08-04|2020-01-08|Atlas Material Testing Technology GmbH|Lighting device for simulation apparatus for motor vehicle accidents|
    DE102018107214A1|2018-03-27|2019-10-02|HELLA GmbH & Co. KGaA|Lighting device for vehicles|
    US10890309B1|2019-12-12|2021-01-12|Valeo North America, Inc.|Method of aiming a high definition pixel light module|
    法律状态:
    2019-09-27| PLFP| Fee payment|Year of fee payment: 2 |
    2020-09-25| PLFP| Fee payment|Year of fee payment: 3 |
    2020-10-16| PLSC| Search report ready|Effective date: 20201016 |
    2021-09-27| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2017-218762|2017-11-14|
    JP2017218762A|JP7007868B2|2017-11-14|Aiming adjustment mechanism for vehicle headlights and vehicle headlights|
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