• 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 vehicle lamp is configured to selectively provide low beam and high beam illumination, and has at least two reflector units (20) each including a first light emitting element (32) and a second light-emitting element (34) arranged side-by-side in the front-to-back direction and a reflector (40) which reflects forwardly the beams of light emitted by the first light-emitting element (32) and the second light emitting element (34). In the vehicle lamp, a dipped beam light distribution pattern or a portion of the dipped beam light distribution pattern is formed by simultaneously lighting the first light emitting element (32) of each of the reflector units ( 20), and a main beam light distribution pattern or part of the main beam light distribution pattern is formed by simultaneously lighting the second light emitting element (34) of each of the reflector units (20). .
    公开号:FR3026463A1
    申请号:FR1558956
    申请日:2015-09-23
    公开日:2016-04-01
    发明作者:Masahito Naganawa
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The invention of the present application relates to a vehicle lamp configured to selectively provide low beam and high beam illumination. 2. Description of Related Art [0002] A vehicle lamp configured to selectively provide forward dipped-beam headlamp illumination and forward beam headlamp illumination by reflecting a beam of light from a light emitting element using a reflector is available in a conventional manner. As a vehicle lamp thus configured, the publication of Japanese Patent Application No. 2014-7106 (JP 20147106 A) discloses a vehicle lamp in which six reflector units each including the light emitting element and the reflector are arranged side by side. In the vehicle lamp described in JP 2014-7106 A, a dipped beam light distribution pattern is formed by simultaneously lighting the light emitting elements of four reflector units, and a light distribution pattern of High beam is formed by additionally lighting the light emitting elements of the two remaining reflector units. In the vehicle lamp described in JP 2014-7106 A, a plurality of reflector units for dipped beam illumination and a plurality of reflector units for high beam illumination are provided and thus, a problem arises in that the dimensions of the vehicle lamp can increase.
    [0002] SUMMARY OF THE INVENTION The invention provides the vehicle lamp which is configured to selectively perform low beam and high beam illumination by reflecting the beam of light of the light emitting element using the reflector and which is capable of forming desired light distribution patterns with a compact configuration.  An aspect of the present invention relates to a vehicle lamp configured to selectively provide low beam and high beam illumination.  The vehicle lamp has at least two reflector units each including a first light emitting element and a second light emitting element disposed next to each other in the fore-aft direction and a reflector reflecting to the before the beams of light emitted by the first light emitting element and the second light emitting element.  In the vehicle lamp, a dipped beam light distribution pattern or a portion of the dipped beam light distribution pattern is formed by simultaneously lighting the first light emitting element of each of the reflector units and a reflection pattern. The main beam light distribution or part of the main beam light distribution pattern is formed by simultaneously lighting the second light emitting element of each of the reflector units.  As indicated in the above configuration, the vehicle lamp according to this aspect of the invention is configured to form the low beam light distribution pattern or part of the light distribution pattern of crossing by simultaneously lighting the first light emitting elements of at least two reflector units and forming the high beam light distribution pattern or part of the high beam light distribution pattern by simultaneously lighting up its second elements light emitters.  With this, compared to a conventional configuration in which are arranged a plurality of reflector units for dipped beam lighting and a plurality of reflector units for high beam lighting, it is possible to reduce the number of reflector units required and thereby reduce the dimensions of the vehicle lamp.  Thus, according to this aspect of the invention, in the vehicle lamp configured to selectively perform the dipped beam and high beam lighting reflective forwards the beam of light from of the light emitting element using the reflector, it is possible to form the necessary light distribution patterns with a compact configuration.  In addition, by adopting the configuration of this aspect of the invention, it becomes possible to obtain a cost reduction by decreasing the number of reflector units required.  The first light emitting element and the second light emitting element can be arranged in a state in which the light emitting surfaces are facing down and the second light emitting element is positioned in front of the first emitting element of the light emitting element. light in each of the reflector units.  According to the above configuration, it is possible to prevent a direct light beam from the first light emitting element from being projected obliquely upwards and forwards.  With this, it is possible to prevent the occurrence of glare.  At least one of the at least two reflector units may include a diffusion lens which diffuses the beam of light emitted by the first light emitting element of the reflector unit in the right-left direction to make to arrive on the reflector of the reflector unit the beam of light after diffusion.  In the case where the reflective surface of the reflector is configured so that a high intensity light region of the main beam light distribution pattern is formed by turning on the second light emitting element in a reflector unit. As a result, an area of high light intensity is also formed in the low beam light distribution pattern when its first light emitting element is turned on.  However, there is a possibility that the high intensity area will become extremely bright as a low beam light distribution pattern and a light irregularity will occur in the low beam light distribution pattern. .  In this case, by means of the configuration in which the diffusion lens is used so that the beam of light emitted by the first light emitting element is diffused in the right-left direction and then arrives on the reflector, it is possible to form a light distribution pattern which spreads in the horizontal direction using a beam of light reflected by the reflector.  As a result, it is possible to prevent the high intensity area of the low beam light distribution pattern from becoming extremely bright, thereby producing light irregularity in the dipped beam light distribution pattern.  The distance between the light emitting surface of the first light emitting element and the light emitting surface 5 of the second light emitting element can be set at a value of less than or equal to 0.3 mm in each of the reflector units. .  The light distribution pattern formed by turning on the second light emitting element is moved upward with respect to the light distribution pattern formed by turning on the first light emitting element 10.  In the case where the distance between the light emitting surface of the first light emitting element and the light emitting surface of the second light emitting element is extremely long, when the light distribution pattern formed by igniting the first light emitting element is formed in a position suitable for forming the dipped beam light distribution pattern, the light distribution pattern formed by igniting the second light emitting element is formed in a position displaced upwardly relative to a position suitable for the formation of the high beam light distribution pattern.  For this purpose, by adjusting the distance between the light-emitting surface of the first light-emitting element and the light-emitting surface of the second light-emitting element to a value of 0.3 mm or less, it is possible forming the light distribution pattern formed by turning on the first light emitting element in the position suitable for forming the dipped beam light distribution pattern, and then forming the light distribution pattern formed by turning on the second light emitting element light emitting element in the position suitable for forming the high beam light distribution pattern.  The distance between the light-emitting surface of the first light-emitting element and the light-emitting surface of the second light-emitting element can be set at a value less than or equal to 1/5 of the width of the emitting surface of light of the second light emitting element in the forward-to-back direction in each of the reflector units.  According to the above configuration, it is possible to form the light distribution pattern formed by turning on the second light emitting element in the position appropriate to the formation of the high beam light distribution pattern.  BRIEF DESCRIPTION OF THE DRAWINGS The invention will be well understood and its advantages will be better understood on reading the detailed description which follows.  The description refers to the following drawings, which are given by way of example.  Figure 1 is a front view showing a vehicle lamp according to an embodiment of the invention of the application; Figure 2 is a sectional view through the line II-II of Figure 1; Figure 3 is a sectional view through the line III-III of Figure 1; Figure 4 is a sectional view through the line IV-IV of Figure 1; Figure 5A is a detailed view of Part Va of Figure 1; Fig. 5B is a view similar to Fig. 5A showing a modification of the above embodiment; Fig. 6A is a detailed view in the direction of the arrow VIa of Fig. 3; Figure 6B is a detailed view in the direction of the arrow VIb of Figure 4; Figs. 7A and 7B are perspective views showing the light distribution patterns formed by a beam of radiation light from the vehicle lamp, Fig. 7A shows a low beam light distribution pattern and Fig. 7B represents a high beam light distribution pattern; and Figs. 8A to 8H are views illustrating the low beam light distribution pattern and the high beam light distribution pattern by representing a plurality of light distribution patterns constituting the fire light distribution pattern. crossing and the light distribution pattern of high beams.  DETAILED DESCRIPTION OF EMBODIMENTS [0020] An embodiment of the invention of the application will be described below using the drawings.  Figure 1 is a front view showing a vehicle lamp according to the embodiment of the invention of the application, Figure 2 is a sectional view through the line II-II of Figure 1, the figure 3 is a sectional view along the line III-III of FIG. 1, and FIG. 4 is a sectional view taken along line IV-IV of FIG.  As shown in the drawings, the vehicle lamp 10 according to the embodiment is a headlight disposed in the left front end portion of a vehicle and is configured to selectively produce a beam of low beam and high beam radiation.  For the vehicle lamp 10, the direction indicated by X in Figure 2 is a "forward direction" ("forward direction" for the vehicle), and the direction indicated by Y in the figure 2 is a "direction to the left" orthogonal to the "forward direction" ("direction to the left" for the vehicle but "direction to the right" when the lamp is seen from the front).  In the vehicle lamp 10, four reflector units 20A, 20B, 20C and 20D are disposed in a lamp chamber formed of a lamp body 12 and a transparent cover transmitting the light 14 fixed to a part opening of the front end of the lamp body 12.  The four reflector units 20A, 20B, 20C and 20D are arranged side by side in the width direction of the vehicle and are arranged to be further moved away when approaching the outer side in the direction of the width of the vehicle.  The reflector units 20A, 20B, 20C and 20D comprise light emitting units 30A, 30B, 30C and 30D, reflectors 40A, 40B, 40C and 40D which reflect forward the beams of light emitted by the light emitting units 30A-30D and support members 50 which support the light emitting units 30A-30D and the reflectors 40A-40D.  The light emitting units 30A to 30D have the same configuration.  Each of the light emitting units 30A to 30D includes a first light emitting element 32 and a second light emitting element 34 disposed next to each other in the front-to-back direction.  The first and second light emitting elements 32 and 34 are arranged in a state in which their light emitting surfaces 32a and 34a are facing down and the second light emitting element 34 is positioned in front of the first light emitting element 32.  Of the four reflector units 20A to 20D, in the two reflector units 20C and 20D positioned on the outer side in the width direction of the vehicle, diffusion lenses 36C and 36D diffuse the beams of light emitted by the first light emitting elements 32 in the right-to-left direction to get the scattered light beams onto the reflectors 40C and 40D.  In this embodiment, the first light emitting elements 32 of the reflector units 20A to 20D are simultaneously illuminated in a dipped beam light mode and the second light emitting elements 34 of the reflector units 20A to 20D. are switched on simultaneously in high beam radiation mode.  The specific configuration of each of the light emitting units 30A to 30D in the reflector units 20A to 20D will then be described.  FIG. 5A is a detailed view of part Va of FIG. 1.  Fig. 6A is a detail view in the direction of the arrow VIa of Fig. 3, and Fig. 6B is a detailed view in the direction of the arrow VIb of Fig. 4.  As shown in these drawings, the first and second light emitting elements 32 and 34 are formed by mounting two light emitting chips on a common substrate 30a.  The lower surfaces of the light emitting chips form light emitting surfaces 32a and 34a.  The terminals 32b and 34b of the first and second light emitting elements 32 and 34 are connected in parallel to a lighting control circuit which is not shown.  The light emitting surface 32a of the first light emitting element 32 and the light emitting surface 34a of the second light emitting element 34 have the same outer shape.  Specifically, each of the light-emitting surfaces 32a and 34a has a square outer shape, each side of which is approximately 1mm in size and is disposed in a state in which four sides are directed in the front-to-back direction and the right-to-left direction. .  The distance d between the light-emitting surfaces 32a and 34a is set at a value less than or equal to 0.3 mm (for example, about 0.15 mm).  The lower surfaces of the support members 50 of the reflector units 20A to 20D comprise concave portions 50a and the 5 light emitting units 30A to 30D are disposed in the concave portions 50a.  The support member 50 is formed of a metal member and acts as a heat sink which dissipates the heat generated by the first and second light emitting elements 32 and 34.  In the two reflector units 20C and 20D, the diffusion lenses 36C and 36D are supported by the support elements 50.  The vertical sectional shape of each of the diffusion lenses 36C and 36D in the width direction of the vehicle is shaped as a concave meniscus lens, and the beam of light emitted by the first light emitting element 32 is thus diffused in the right-left direction.  The diffusion lens 36D of the reflector unit 20D has an optical power greater than that of the diffusion lens 36C of the reflector unit 20C and diffuses the light beam emitted by the first light emitting element 32 in the direction left-right wider than the diffusion lens 36C of the reflector unit 20C.  The vertical sectional shape of each of the diffusion lenses 36C and 36D in the front-rear direction is fixed to a shape in which its thickness decreases progressively as it approaches the rear and the beam of light emitted by the first light emitting element 32 is thus deflected downwards.  The specific configuration of each of the reflectors 40A to 40D of the reflector units 20A to 20D will then be described.  The reflectors 40A and 40B of the reflector units 20A and 20B have a configuration suitable for the radiation of crossing lights.  On the other hand, the reflectors 40C and 40D of the reflector units 20C and 20D have a configuration suitable for high beam radiation.  The reflector 40A has a reflecting surface 40Aa formed with reference to the front end position of the light emitting surfaces 32a of the first light emitting element 32.  Reflective surface 40Aa is formed of a plurality of reflecting elements 40As.  The beam of light emitted by the first light emitting element 32 (or the second light emitting element 34) is reflected by the reflecting elements 40As so as to be deflected or scattered in the horizontal direction or in an inclined oblique direction with respect to a horizontal plane.  The reflector 40B also has a reflecting surface 40Ba formed with reference to the front end position of the light emitting surface 32a of the first light emitting element 32.  Reflective surface 40Ba is formed of a plurality of reflecting elements 40Bs.  The beam of light emitted by the first light emitting element 32 (or the second light emitting element 34) is reflected by the reflecting elements 40Bs so as to be diffused in the horizontal direction.  On the other hand, the reflector 40C has a reflecting surface 40Ca formed with reference to the central position of the light emitting surface 34a of the second light emitting element 34.  The reflecting surface 40Ca is formed of a plurality of reflecting elements 40Cs.  The light beam emitted by the second light emitting element 34 (or the first light emitting element 32) is reflected by the reflecting elements 40Cs so as to be slightly scattered in the horizontal direction.  The beam of light emitted by the first light emitting element 32 is here scattered in the right-left direction by the diffusion lens 36C and arrives on the reflective surface 40Ca of the reflector 40C as a scattered light beam.  The light beam is thus reflected by the reflecting elements 40Cs as a beam of light which is diffused in the horizontal direction and is deflected downwards.  The reflector 40D also has a reflecting surface 40Da formed with reference to the central position of the light emitting surface 34a of the second light emitting element 34.  The reflecting surface 40Da is formed of a plurality of reflecting elements 40Ds.  The light beam emitted by the second light emitting element 34 (or the first light emitting element 32) is reflected at the level of the reflecting elements 40Ds so as to be slightly scattered in the horizontal direction.  The beam of light emitted by the first light emitting element 32 is here scattered in the right-left direction by the diffusion lens 36D and arrives on the reflecting surface 40Da of the reflector 40D as a scattered light beam.  The light beam is thus reflected by the reflecting elements 40Ds as a beam of light which is diffused in the horizontal direction and is deflected downwards.  Figures 7A and 7B are perspective views showing light distribution patterns formed on a virtual vertical screen disposed in a position 25 m in front of the lamp by the beam of light projected forward by the lamp for vehicle 10.  The light distribution pattern shown in Fig. 7A is a dipped beam light distribution pattern and the light distribution pattern shown in Fig. 7B is a high beam light distribution pattern.  A light distribution pattern of the low beam headlamps PL shown in FIG. 7A is a left light distribution dipped beam light distribution pattern and comprises a horizontal cutting line CL1 and an oblique cutting line CL2. at its upper end edge.  The horizontal cut line CL1 is formed in an opposite side-side part of the right side of a line VV which passes vertically through an HV vanishing point towards the front of the lamp and the oblique cutting line CL2 is formed in a part side driving lane on the left side of the VV line.  In the low beam light distribution pattern PL, a bend point E, as a point of intersection between the horizontal cut line CL1 and the oblique cut line CL2, is positioned about 0.50. at 0.6 ° below the HV leakage point.  In the low beam light distribution pattern PL, a high light intensity zone (i.e., a hot zone) HZL is positioned to the left and below the bend point E and a zone Laterally extending medial diffusion channel Z1L is formed in the vicinity of a portion below the elbow point E.  The middle diffusion zone Z1L enhances the brightness around the high luminosity scattering zone HZL.  The low beam light distribution pattern PL is formed of a light distribution pattern of lights in combination of four light distribution patterns PLa, PLb, PLc and PLd, shown in Figures 8A, 8C , 8E and 8G.  The light distribution pattern PLa shown in Fig. 8A is the light distribution pattern formed by the beam of radiation light from the reflector unit 20A.  The light distribution pattern PLa is the light distribution pattern which forms the main part of the light distribution pattern PL dipped beam.  The horizontal and oblique cutting lines CL1 and CL2 are formed by the light distribution pattern PLa and most of the high luminous intensity area HZL of the low beam light distribution pattern PL is formed by its strong area. luminous intensity HZLa.  The light distribution pattern PLb shown in Fig. 8C is the light distribution pattern formed by the beam of radiation light from the reflector unit 20B.  The light distribution pattern PLb is the light distribution pattern which forms the diffusing zone of the PL dipped beam light distribution pattern, and its HZLb high light intensity zone is positioned near the edge of the light distribution pattern. upper end of the PLb light distribution pattern.  The light distribution pattern PLc shown in FIG. 8E is the light distribution pattern formed by the beam of radiation light from the reflector unit 20C.  The light distribution pattern PLc is the oblong light distribution pattern that spreads in the horizontal direction a certain degree below the bend point E, and is part of the median diffusion zone Z1L. of the light distribution pattern of crossing lights PL.  a high light intensity region HZLc of the light distribution pattern PLc is positioned near the upper end edge of the light distribution pattern PLc.  A light distribution pattern PLc 'indicated by a dashed line in FIG. 8E is the light distribution pattern 35 formed in the case where the diffusion lens 36C is not present and is formed in the form point in a position slightly displaced upwards with respect to the position of the light distribution pattern PLc.  However, the diffusion lens 36C is actually present and thus, the light beam emitted by the first light emitting element 32 is diffused so as to be directed slightly downward in the right-left direction and arrives on the reflector 40C in as a beam of light scattered.  Accordingly, the light distribution pattern PLc is the light distribution pattern obtained by moving down the light distribution pattern PLc and spreading the light distribution pattern PLc 'in the horizontal direction.  The light distribution pattern PLd shown in FIG. 8G is the light distribution pattern formed by the beam of radiation light from the reflector unit 20D.  The light distribution pattern PLd is the oblong light distribution pattern which spreads slightly in the horizontal direction below the bend point E, and is part of the median diffusion zone Z1L of the pattern of light distribution. light distribution dipped beam PL.  A high light intensity region HZLd of the light distribution pattern PLd is positioned near the upper end edge of the light distribution pattern PLd.  A light distribution pattern PLd 'indicated by a dashed line in FIG. 8G is the light distribution pattern formed in the case where the diffusing lens 36D is not present, and is generally formed under point shape in a position slightly displaced upwardly with respect to the position of the light distribution pattern PLd.  However, the diffusion lens 36D is actually present and thus, the beam of light emitted by the first light emitting element 32 is diffused so as to be directed slightly downward in the right-left direction and arrives on the reflector 40D. as a beam of light scattered.  As a result, the light distribution pattern PLd is formed as a light distribution pattern obtained by moving down the light distribution pattern PLd 'and spreading the light distribution pattern PLd' in the horizontal direction. .  On the other hand, a high beam light distribution pattern PH shown in FIG. 7B is formed as an oblong light distribution pattern which spreads to the left and to the right, the point HV leakage being positioned at its center.  In the high beam light distribution pattern PH, its HZH high light intensity zone is formed extending slightly laterally, the HV vanishing point being positioned at its center, and a small elongated Z1H diffusion zone. more on its left side is formed around the area of high luminous intensity HZH.  The small Z1H scattering zone enhances the brightness around the HZH area.  The high beam light distribution pattern PH is formed of a light distribution pattern in combination of four light distribution patterns PHa, PHb, PHc and PHd, shown in FIGS. 8B, 8D, 8F and 8H.  The light distribution pattern PHa shown in Fig. 8B is the light distribution pattern formed by the beam of radiation light from the reflector unit 20A.  The light distribution pattern PHa is the light distribution pattern formed as a result of the constitution of the reflector unit 20A, so as to form the light distribution pattern PLa of the light distribution pattern. low beam lights PL.  the light distribution pattern PHa is the light distribution pattern obtained by moving up the light distribution pattern PLa and deforming its outer shape.  The light distribution pattern PHa is displaced upwards with respect to the position of the light distribution pattern PLa, since the orientation of the light beam reflected by the reflector 40A of the beam of light emitted by the second light emitting element 34 disposed in front of the first light emitting element 32 is higher than that of the light beam emitted by the first light emitting element 32.  A zone of high luminous intensity HZHa of the light distribution pattern PHa is displaced upwards with respect to the position of the zone of high light intensity HZLa of the light distribution pattern PLa, but the importance of its The displacement is smaller than the magnitude of the upward displacement of the light distribution pattern PHa with respect to the PLa light distribution pattern.  The high luminous intensity zone HZHa is positioned in the vicinity of the center of the light distribution pattern PHa in the vertical direction.  The light distribution pattern PHb shown in FIG. 8D is the light distribution pattern formed by the beam of radiation light from the reflector unit 20B.  The light distribution pattern PHb is the light distribution pattern which forms the diffusion zone of the high beam light distribution pattern PH, and has a shape obtained by moving up the distribution pattern of PLb low beam light distribution pattern 10 light PLb.  A zone of high luminous intensity HZHb of the light distribution pattern PHb is positioned in the vicinity of the center of the light distribution pattern PHb in the vertical direction.  The light distribution pattern PHc shown in FIG. 8F is the light distribution pattern formed by the beam of radiation light from the reflector unit 20C.  The light distribution pattern PHc is the light distribution pattern in the form of a point which spreads slightly in the horizontal direction, the HV vanishing point being positioned at its center, and forms the main part of the high luminous intensity area HZH of the high beam light distribution pattern PH.  An area of high luminous intensity HZHc of the light distribution pattern PHc is positioned at the vanishing point H-V.  The light distribution pattern PHd shown in FIG. 8H is the light distribution pattern formed by the beam of radiation light from the reflector unit 20D.  [0074] The light distribution pattern PHd is the light distribution pattern which spreads narrowly in the horizontal direction, the HV vanishing point being positioned at its center, and is part of the high intensity area. HZH light of the high beam light distribution pattern PH.  A high light intensity region HZHd of the light distribution pattern PHd is positioned at the vanishing point H-V.  The operation and effect of this embodiment will then be described.  The vehicle lamp 10 according to this embodiment forms the low beam light distribution pattern PL by simultaneously lighting the first light emitting elements 32 of the four reflector units 20A, 20B, 20C and 20D and forms the PH high beam light distribution pattern by simultaneously lighting its second light emitting elements 34.  Compared to the conventional configuration in which a plurality of reflectors for the beam of low beam radiation and a plurality of reflectors for high beam radiation are arranged, it is possible to reduce the number of reflector units required and thus reduce the dimensions of the vehicle lamp 10.  Thus, according to this embodiment, in the vehicle lamp 10 configured to selectively achieve the forward beam of dipped beam and high beam radiation by reflecting the beam of light from the beam. Light emitting element using the reflector, it is possible to form desired light distribution patterns with a compact configuration.  In addition, by adopting the configuration of this embodiment, it becomes possible to obtain a cost reduction by decreasing the number of reflector units required.  In addition, in this embodiment, since the first and second light emitting elements 32 and 34 of the reflector units 20A to 20D are disposed in a state in which the light emitting surfaces 32a and 34a are facing the low and the second light emitting elements 34 are positioned in front of the first light emitting elements 32, it is possible to avoid oblique projection upwards and forwards of a direct light beam coming from the first emitting element of light 32.  With this, it is possible to prevent the occurrence of glare.  In addition, since the two reflector units 20C and 20D comprise the diffusion lenses 36C and 36D which diffuse the light beams emitted by the first light emitting elements 32 in the right-left direction, causing the arrival of beams of light scattered on the reflectors 40C and 40D, it is possible to obtain the following operation and effect.  The two reflector units 20C and 20D form the light distribution patterns in point form PHc and PHd by turning on the second light emitting elements 34 to thereby form the high luminous intensity area HZH of the light distribution pattern. of high beam PH.  In the case where the reflector units 20C and 20D do not include the diffusion lenses 36C and 36D, when the first light emitting elements 32 are turned on, the PLc 'and PLd' point light distribution patterns are formed. in the low beam light distribution pattern and a high light intensity area is thus formed below the forming position of the high light intensity area HZH.  There is, however, a possibility for the high intensity area to become extremely bright as a low beam light distribution beam PL and a light irregularity to occur in the low beam light distribution pattern PL.  By contrast, as in this embodiment, by using the diffusion lenses 36C and 36D and by diffusing the light beams emitted by the first light emitting elements 32 in the right-left direction to arrive the beams of light. light scattered on the reflectors 40C and 40D, it is possible to form the light distribution patterns PHc and PHd spreading in the horizontal direction using the light beams reflected by the reflectors 40C and 40D.  As a result, it is possible to prevent the high luminous intensity zone HZL of the low beam light distribution pattern PL from becoming extremely bright, thereby causing unevenness of light in the light distribution pattern of the lights. crossing PL.  Moreover, since the diffusion lenses 36C and 36D of the reflector units 20C and 20D slightly deflect the beams of light emitted by the first light emitting elements 32 causing the arrival of the light beams deviated on the reflectors 40C and 40D, it is possible to prevent the light distribution patterns PHc and PHd formed by using the light beams reflected by the reflectors 40C and 40D to accidentally pass above the horizontal cutting line CL1 and of oblique cutting line CL2.  In this embodiment, since the distance d between the light emitting surface 32a of the first light emitting element 32 and the light emitting surface 34a of the second light emitting element 34 is set to a value of about 0. 15 mm (i.e., less than or equal to 0.3 mm) in each of the reflector units 20A-20D, the following operation and effect can be achieved.  The light distribution patterns PHa, PHb, PHc and PHd formed by switching on the second light emitting element 34 are displaced upwards with respect to the light distribution patterns PLa, PLb, PLc and PLd formed by switching on the light. first light emitting element 32.  In the case where the distance d between the light emitting surface 32a of the first light emitting element 32 and the light emitting surface 34a of the second light emitting element 34 is extremely long, when the light distribution patterns PLa and PLI formed by igniting the first light emitting element 32 are formed in positions suitable for forming the low beam light distribution pattern PL, the light distribution patterns PHa and PHb formed by turning on the second light emitting element 34 are formed in positions displaced upwardly from the positions appropriate for the formation of the high beam light distribution pattern PH.  In contrast, when the distance d between the light emitting surface 32a of the first light emitting element 32 and the light emitting surface 34a of the second light emitting element 34 is set to a small value less than or equal to 0. , 3 mm, it is possible to form the light distribution patterns PLa and PLb formed by lighting the first light emitting element 32 in the positions appropriate to the formation of the light distribution pattern of PL crossing lights, then of forming the light distribution patterns PHa and PHb formed by lighting the second light emitting element 34 in the positions appropriate for the formation of the high beam light distribution pattern PH.  In this embodiment, since the first and second light emitting elements 32 and 34 are formed by mounting two light emitting chips on the common substrate 30a, and the lower surfaces of the light emitting chips form the emitting surfaces of the emitter. light 32a and 34a, the adjustment of the distance d between the light emitting surfaces 32a and 34a to a value less than or equal to 0.3 mm is easily obtained.  Even in the case where the width of the light emitting surface 34a of the second light emitting element 34 in the front-rear direction and the dimensions of each of the reflectors 40A to 40D are larger than those of this embodiment. and that the distance d between the light emitting surface 32a of the first light emitting element 32 and the light emitting surface 34a of the second light emitting element 34 is set to a value greater than 0.3mm, when the distance d is set at a value less than or equal to 1/5 of the width of the light-emitting surface 34a of the second light-emitting element 34 in the front-to-back direction, it is possible to form the light distribution patterns PHa and PHb formed by turning on the second light emitting element 34 in the positions appropriate for the formation of the high beam light distribution pattern PH.  Although the embodiment above has a configuration including the four reflector units 20A to 20D, it is possible to adopt a configuration including up to three or at least five reflector units and it is also possible to adopt a configuration including another reflector unit in addition to the four reflector units 20A-20D and forming the low beam light distribution pattern PL or the high beam light distribution pattern PH by lighting additional way the light emitting element.  In the above embodiment, a description of the configuration in which the first and second light emitting elements 32 and 34 of the reflector units 20A to 20D are provided in the state in which the light emitting surfaces 32a and 34a are facing downwards and the second light emitting elements 34 are positioned in front of the first light emitting elements 32, but it is possible to obtain substantially the same operation and effect as those of the light emitting mode 32. embodiment above also in the case where the first and second light emitting elements 32 and 34 are arranged in a state in which the light emitting surfaces 32a and 34a are facing upwards and the second light emitting elements 34 are positioned behind the first light emitting elements 32.  In the above embodiment, a description of the configuration in which the light emitting surface 32a of the first light emitting element 32 and the light emitting surface 34a of the second light emitting element 34 has been provided is described. have the same outer shape, but it is also possible to adopt a configuration in which the light emitting surface 32a and the light emitting surface 34a have different outer shapes.  In addition, it is also possible to adopt different outer shapes of the square shape as outer forms of the light emitting surfaces 32a and 34a.  In the embodiment above, a description of the configuration in which the first and second light emitting elements 32 and 34 are formed by mounting two light emitting chips on the common substrate 30a has been provided, but it is also possible to form the first and second light emitting elements by mounting the light emitting chips on separate substrates.  In the above embodiment, a description of the configuration in which the diffusion lens having the cross-sectional vertical shape in the width direction of the vehicle which is shaped as a meniscus lens has been provided is described. concave is used as the diffusion lens 36C of the reflector unit 20C (or diffusion lens 36D of the reflector unit 20D) but, as the diffusion lens 136C of a reflector unit 120C shown in FIG. 5B, it is also possible to use a diffusion lens having the cross-sectional vertical cross-sectional shape of the vehicle which is shaped as a convex meniscus lens.  In this case also, it is possible to diffuse the light beam emitted by the first light emitting element 32 in the right-left direction to arrive light beams scattered on the reflector 40C.  In addition, by adopting the above configuration, it becomes possible to cause another beam of light emitted by the first light emitting element 32 to arrive on the reflector 40C.  In the above embodiment, a description of the vehicle lamp 10 configured to form the low beam light distribution pattern PL of the left light distribution has been provided, but in adopting a configuration wherein the vehicle lamp 10 according to this embodiment is laterally reversed, it is also possible to configure the vehicle lamp 10 to form the dipped beam light distribution pattern for right light distribution.  It will be appreciated that the numerical values presented as descriptions of the vehicle lamp in this embodiment and in the modification are only examples and these numerical values may be set to different values as necessary.  In addition, the invention is not limited to the configuration described in the embodiment, and the embodiment of the invention may adopt a configuration in which other various modifications are made.  As described above, the vehicle lamp according to the present invention is configured to selectively produce low beam and high beam radiation, and comprises at least two reflector units each including a first light emitting element and a second light emitting element disposed next to each other in the front-to-back direction and a reflector which reflects forwards the beams of light emitted by the first light emitting element and the second light emitting element.  In the vehicle lamp, a dipped beam light distribution pattern or a portion of the dipped beam light distribution pattern is formed by simultaneously lighting the first light emitting element of each of the reflector units and a reflection pattern. The main beam light distribution or part of the main beam light distribution pattern is formed by simultaneously lighting the second light emitting element of each of the reflector units.  [0099] The types of the first light emitting element and the second light emitting element are not particularly limited and it is possible to use for example a light emitting diode and a laser diode.  The specific positional relationship between the at least two reflector units is not particularly limited.  [0101] The formation of the dipped beam light distribution pattern or the portion of the crosslamp light distribution pattern comprises the formation of the dipped beam light distribution pattern only by simultaneous ignition of the first element emitting light from each of the reflector units and forming the low beam light distribution pattern by providing another reflector unit and additionally lighting its light emitting element.  The formation of the high beam light distribution pattern or the portion of the high beam light distribution pattern comprises the formation of the main beam light distribution pattern only by simultaneous ignition of the second transmitting element of light from each of the reflector units and forming the high beam light distribution pattern by providing another reflector unit and additionally lighting its light emitting element.  20
    权利要求:
    Claims (5)
    [0001]
    REVENDICATIONS1. A vehicle lamp interlocked for selectively providing low beam and high beam lighting, the vehicle lamp being characterized by comprising: at least two reflector units (20) each including a first a light emitting element (32) and a second light emitting element (34) arranged one beside the other in the front-to-back direction and a reflector (40) which reflects the light beams forwardly; emitted by the first light emitting element (32) and the second light emitting element (34), wherein a dipped beam light distribution pattern or a portion of the dipped beam light distribution pattern is formed by simultaneously illuminating the first light emitting element (32) of each of the reflector units (20), and a high beam light distribution pattern or part of the repair pattern High beam light output is formed by simultaneously lighting the second light emitting element (34) of each of the reflector units (20). 20
    [0002]
    The vehicle lamp according to claim 1, wherein the first light emitting element (32) and the second light emitting element (34) are arranged in a state in which the light emitting surfaces (32a, 34a) are rotated. downwardly and the second light emitting element (34) is positioned in front of the first light emitting element (32) in each of the reflector units (20).
    [0003]
    The vehicle lamp according to claim 1 or 2, wherein at least one of the at least two reflector units (20) comprises a diffusion lens (36) which diffuses the light beam 30 emitted by the first transmitting element. light source (32) of the reflector unit (20) in the right-left direction for causing the light beam after diffusion to arrive on the reflector (40) of the reflector unit (20).
    [0004]
    A vehicle lamp according to any one of claims 1 to 3, wherein the distance between the light emitting surface (32a) of the first light emitting element (32) and the emitting emitting surface (34a) of the second element light emitter (34) is set at a value of 0.3 mm or less in each of the reflector units (20).
    [0005]
    A vehicle lamp according to any one of claims 1 to 4, wherein the distance between the light emitting surface (32a) of the first light emitting element (32) and the light emitting surface (34a) of the second element light emitter (34) is set to not more than 1/5 of the width of the light-emitting surface (34a) of the second light-emitting element (34) in the front-to-back direction in each of the reflector (20).
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    同族专利:
    公开号 | 公开日
    JP6448277B2|2019-01-09|
    CN105465712B|2018-01-23|
    CN105465712A|2016-04-06|
    US20160091161A1|2016-03-31|
    JP2016072017A|2016-05-09|
    US9719651B2|2017-08-01|
    DE102015218460A1|2016-03-31|
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    US9896023B1|2017-02-09|2018-02-20|Ford Global Technologies, Llc|Vehicle rear lighting assembly|
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    JP6884042B2|2017-06-07|2021-06-09|株式会社小糸製作所|Vehicle lighting|
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    DE102019110967A1|2019-04-29|2020-10-29|HELLA GmbH & Co. KGaA|Method for controlling a headlight of a motor vehicle|
    法律状态:
    2016-08-16| PLFP| Fee payment|Year of fee payment: 2 |
    2017-08-10| PLFP| Fee payment|Year of fee payment: 3 |
    2018-08-10| PLSC| Search report ready|Effective date: 20180810 |
    2018-08-13| PLFP| Fee payment|Year of fee payment: 4 |
    2019-08-15| PLFP| Fee payment|Year of fee payment: 5 |
    2020-08-12| PLFP| Fee payment|Year of fee payment: 6 |
    2021-08-12| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2014198773A|JP6448277B2|2014-09-29|2014-09-29|Vehicle lighting|
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