WO2014080747A1 - Vehicle headlight - Google Patents

Vehicle headlight Download PDF

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Publication number
WO2014080747A1
WO2014080747A1 PCT/JP2013/079779 JP2013079779W WO2014080747A1 WO 2014080747 A1 WO2014080747 A1 WO 2014080747A1 JP 2013079779 W JP2013079779 W JP 2013079779W WO 2014080747 A1 WO2014080747 A1 WO 2014080747A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
shade
light emitting
reflector
semiconductor
Prior art date
Application number
PCT/JP2013/079779
Other languages
French (fr)
Japanese (ja)
Inventor
安部　俊也
慶 小野間
Original Assignee
市光工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 市光工業株式会社 filed Critical 市光工業株式会社
Publication of WO2014080747A1 publication Critical patent/WO2014080747A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/335—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with continuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/49—Attachment of the cooling means

Definitions

  • the present invention relates to a vehicle headlamp including a semiconductor light source, a reflector, and a holding member.
  • the present invention relates to a vehicle headlamp capable of obtaining a good (ideal) light distribution pattern.
  • a conventional vehicular headlamp includes a light emitting module, a reflector having a reflecting surface, and a support member that supports the light emitting module and the reflector. The light from the light emitting module is reflected by the reflecting surface and is irradiated in front of the vehicle with a predetermined light distribution pattern.
  • the problem to be solved by the present invention is that a good light distribution pattern may not be obtained with a conventional vehicle headlamp.
  • the present invention (the invention according to claim 1) includes a semiconductor light source having a light emitting surface, a reflector having a reflecting surface for reflecting light from the light emitting surface, and a holding member for holding the semiconductor light source and the reflector.
  • the holding member is provided with a shade that shields at least light incident from the light emitting surface on the light emitting surface side of the reflecting surface.
  • the reflection surface controls the light distribution pattern having the cutoff line and the high luminous intensity band, and the shade is the cutoff line and the high luminous intensity of the light distribution pattern in the reflection surface.
  • the light incident on the light emitting surface side end of the portion that controls the light distribution of the band is shielded.
  • This invention is characterized in that the reflecting surface is a parabolic reflecting surface, and the edge of the shade forms a concave curve.
  • an opening is provided at a location where at least one of the semiconductor-type light source or the connector electrically connected to the semiconductor-type light source is located in the shade.
  • an insertion space connected to the opening is provided at a position where the connector is inserted between the reflector and the holding member.
  • the present invention (the invention according to claim 5) includes a direct light shielding shade disposed on the opposite side of the shade across the light emitting surface, and the shade and the direct light shielding shade form an integral structure, and are used as a holding member. It is fixed.
  • This invention (the invention according to claim 6) is characterized in that the shade is provided integrally with the holding member.
  • the vehicle headlamp according to the present invention shields at least light incident on the light emitting surface side of the reflecting surface from light emitted from the light emitting surface of the semiconductor-type light source by a shade provided on the holding member. Can do.
  • a shade provided on the holding member.
  • the reflection reflected by these curved surfaces, deposition pool, burrs, etc. It is possible to prevent generation of reflected light that is light and is not subjected to light distribution control.
  • the light distribution pattern can be controlled with high accuracy, a good light distribution pattern can be obtained.
  • FIG. 1 is a cross-sectional view (a cross-sectional view taken along the line II in FIG. 3) showing Embodiment 1 of the vehicle headlamp according to the present invention.
  • FIG. 2 is a perspective view showing the lamp unit.
  • FIG. 3 is a front view showing the lamp unit.
  • FIG. 4 is a perspective view (a view taken along arrow IV in FIG. 1) showing the shade member.
  • FIG. 5 is a perspective view (a view taken along arrow IV in FIG. 1) showing a part of the shade member, the semiconductor-type light source, and the heat sink member.
  • FIG. 6 is a front view showing the reflector.
  • FIG. 7 is a partially enlarged front view showing a part of the reflector.
  • FIG. 1 is a cross-sectional view (a cross-sectional view taken along the line II in FIG. 3) showing Embodiment 1 of the vehicle headlamp according to the present invention.
  • FIG. 2 is a perspective view showing the lamp unit.
  • FIG. 3 is a front
  • FIG. 8 is an explanatory plan view showing a relative positional relationship among the semiconductor-type light source, the reflector, and the first shade portion.
  • FIG. 9 is a partial front explanatory view showing an edge of the first shade portion.
  • FIG. 10 is an explanatory diagram showing a light distribution pattern (low beam light distribution pattern) obtained by being reflected by a reflector.
  • FIG. 11 is a cross-sectional view (a cross-sectional view taken along the line II in FIG. 3) showing Embodiment 2 of the vehicle headlamp according to the present invention.
  • FIG. 12 is an explanatory plan view showing a relative positional relationship among the semiconductor-type light source, the reflector, and the first shade portion.
  • front, rear, upper, lower, left, and right are front, rear, upper, lower, left, and right when the vehicle headlamp according to the present invention is mounted on a vehicle.
  • FIG. 10 is an explanatory diagram of an isoluminous curve that shows a simplified light distribution pattern on a screen drawn by computer simulation.
  • the central isoluminous curve is a high luminous intensity band HZ, and the other curves are It's a light intensity zone that gets lower as you go out.
  • Embodiment 1 of a vehicle headlamp according to the present invention.
  • reference numeral 1 denotes a vehicle headlamp (for example, a headlamp) in the first embodiment.
  • the vehicle headlamp 1 is mounted on both left and right ends of a front portion of a vehicle for left-hand traffic.
  • the vehicle headlamp 1 includes a lamp housing (not shown), a lamp lens (not shown), a semiconductor light source 2, a reflector 3, and a shade member 4. And a heat sink member 5 as a holding member and a bracket member 6.
  • the semiconductor-type light source 2, the reflector 3, the shade member 4, the heat sink member 5, and the bracket member 6 constitute a lamp unit.
  • the lamp housing and the lamp lens define a lamp chamber (not shown).
  • the lamp units 2, 3, 4, 5, 6 are disposed in the lamp chamber, and are attached to the lamp housing via optical axis adjustment mechanisms 10 for the vertical direction and the horizontal direction.
  • the semiconductor-type light source 2 is a self-luminous semiconductor-type light source such as an LED, an OEL, or an OLED (organic EL) in this example.
  • the semiconductor light source 2 includes a light emitting chip (LED chip) 20, a package (LED package) in which the light emitting chip 20 is sealed with a sealing resin member, a substrate 21 on which the package is mounted, and an attachment to the substrate 21. And a terminal (male terminal) 22 which is electrically connected to the light emitting chip 20.
  • the terminal 22 is provided substantially parallel to the light reflection direction of the reflector 3.
  • the substrate 21 is fixed to the heat sink member 5 with screws 23.
  • the semiconductor light source 2 is held (fixed) on the heat sink member 5.
  • the semiconductor light source 2 and the heat sink member 5 are positioned by a small circular hole, a small oval hole, a pin or the like.
  • a connector (female connector) 24 is detachably attached to the terminal 22 electrically and mechanically.
  • the connector 24 is electrically connected to a power source (battery) via a harness. As a result, current can be supplied to the light emitting chip 20.
  • the connection direction between the terminal 22 and the connector 24 is substantially parallel to the light reflection direction of the reflector 3.
  • the light emitting chip 20 has a planar rectangular shape (planar rectangular shape). That is, a plurality of, for example, four square chips are arranged in the horizontal direction on the left and right. Note that one rectangular chip or one square chip may be used.
  • the rectangular lower surface of the light emitting chip 20 forms a light emitting surface 25. As a result, the light emitting surface 25 faces downward.
  • the center of the light emitting surface 25 of the light emitting chip 20 is located at or near the reference focal point of the reflector 3 and on or near the reference optical axis (reference axis) of the reflector 3.
  • the reflector 3 has a shape of a part of a rotating parabola (rotating paraboloid), that is, a lower part, a rear part, and a left and right part excluding an upper part and a front part. A shape consisting of both sides.
  • the reflector 3 is held (fixed) to the heat sink member 5 by a screw or the like.
  • the reflector 3 and the heat sink member 5 are positioned by a small circular hole, a small oval hole, a pin or the like.
  • a reflecting surface 30 is provided on the inner surface of the reflector 3.
  • the reflective surface 30 faces the light emitting surface 25 of the light emitting chip 20 facing downward.
  • the reflection surface 30 is a reflection surface made of a parabolic free-form surface (NURBS surface).
  • NURBS surface parabolic free-form surface
  • the reflecting surface 30 has a reference focal point and a reference optical axis.
  • the reference focal point of the reflective surface 30 is located at or near the center of the light emitting surface 25 of the semiconductor light source 2.
  • the reference optical axis of the reflecting surface 30 passes through or near the center of the light emitting surface 25 of the semiconductor light source 2.
  • the reflection surface 30 uses the light L1 from the light emitting surface 25 of the semiconductor-type light source 2 as a low beam light distribution pattern LP (see FIG. 10) as shown in the solid line arrow in FIG. This is a reflective surface that reflects light.
  • the low beam light distribution pattern LP includes an oblique cut-off line CL1, a horizontal cut-off line CL2, and an elbow point (a point at or near the intersection of the oblique cut-off line CL1 and the horizontal cut-off line CL2) E. And a high luminous intensity zone HZ.
  • the oblique cut-off line CL1 is located on the traveling lane side (left side for left side traveling, right side for right side traveling), and the horizontal cutoff line CL2 is on the opposite lane side (left side). It is located on the right side for travel and on the left side for right travel. Note that a horizontal cut-off line is also formed on the traveling lane side with respect to the oblique cut-off line CL1.
  • the reflection surface 30 is divided into a plurality of segments 31 and 32. In this example, it is divided into 12 pieces on the left and right.
  • the plurality of segments are divided into a central segment 31 and left and right segments 32.
  • the central segment 31 is one in this example, but may be plural.
  • the right and left segments 32 are five on the right side and six on the left side, but the number is not particularly limited.
  • the central segment 31 is formed by controlling the light distribution of the condensing pattern.
  • the condensing pattern has the cut-off line and the high luminous intensity band HZ.
  • the cut-off line is at least one of the oblique cut-off line CL1 and the horizontal cut-off line CL2.
  • the left and right segments 32 are formed by controlling the light distribution of the diffusion pattern.
  • the low beam light distribution pattern LP is obtained by superimposing the condensing pattern and the diffusion pattern.
  • the reflection surface 30 is formed by vapor deposition.
  • an undercoat layer for enhancing adhesion is formed on the surface of the base material of the reflector 3, and then an aluminum vapor deposition layer as a reflective layer is formed on the undercoat layer. Furthermore, a top coat layer for improving weather resistance is formed on the aluminum vapor deposition layer.
  • a vapor deposition reservoir 33 is formed at an end (upper end) on the light emitting surface 25 side of the reflecting surface 30 of the reflector 3.
  • the range in which the vapor deposition reservoir 33 is formed is a range from the upper end of the reflector 3 to a boundary line indicated by a two-dot chain line in FIG. 1 or a boundary line indicated by a broken line in FIG. .
  • the boundary line of the vapor deposition reservoir 33 forms a straight line or a substantially straight line when viewed from the front.
  • the central portion of the upper end portion (the end portion on the light emitting surface 25 side) of the reflector 3 is horizontal or almost horizontal.
  • the left and right end portions of the upper end portion of the reflector 3 are inclined.
  • An insertion space 34 is provided at a position where the connector 24 is inserted between the center portion of the upper end portion of the reflector 3 and the heat sink member 5. Due to the insertion space 34, the vapor deposition reservoir 33 of the reflector 3 is positioned below the light emitting surface 25. That is, the vapor deposition reservoir 33 is located at a position where the light L2 from the light emitting surface 25 reaches.
  • the shade member 4 includes a mounting portion 40, a first shade portion 41 as a shade, and a second shade portion as a direct light shielding shade. 42.
  • the attachment portion 40, the first shade portion 41, and the second shade portion 42 form an integral structure.
  • the shade member 4 is obtained by, for example, applying a matte black coating on the surface of a thin steel plate.
  • the shade member 4 is processed by pressing.
  • the attachment portion 40 has a quadrangular shape and is fixed to the heat sink member 5 by a screw 43. As a result, the shade member 4 is held (fixed) to the heat sink member 5.
  • the shade member 4 and the heat sink member 5 are positioned by small circular holes, small elliptical holes, pins, and the like.
  • the first shade portion 41 shields at least the light L2 incident on the vapor deposition reservoir 33 of the central segment 31 of the reflective surface 30 out of the light from the light emitting surface 25.
  • the shielding range S of the first shade portion 41 is a range from the upper end portion of the reflector 3 to a boundary line indicated by a solid line in FIG.
  • the boundary line of the shielding range S of the first shade part 41 indicated by the solid line in FIG. 7 is located slightly below the boundary line of the vapor deposition reservoir part 33 indicated by the broken line in FIG.
  • the boundary line of the shielding range S of the first shade part 41 and the boundary line of the vapor deposition pool part 33 may coincide or substantially coincide.
  • the first shade portion 41 is provided at one end of the mounting portion 40 (the rear end, which is the end opposite to the light reflecting direction of the reflecting surface 30 with respect to the light emitting surface 25). Yes. That is, the first shade portion 41 is provided at the central portion of the remaining bent end portion where one end portion of the mounting portion 40 is bent to one side (lower side) and both end portions of the bent end portion are cut. It has been.
  • the edge (lower edge) 44 of the first shade part 41 forms a concave curve. That is, as shown in FIG. 9A, the left and right ends of the edge 44 of the first shade portion 41 protrude outward (lower side), and the center of the edge 44 of the first shade portion 41 The part is recessed inward (upper side).
  • the boundary line of the shielding range S (see FIG. 7 is a straight line or a substantially straight line in front view.
  • a boundary line of the shielding range S that forms a straight line or a substantially straight line (see the solid line in FIG. 7) and a boundary line of the deposition reservoir 33 that forms a straight line or a substantially straight line (see the broken line in FIG. 7). ) Is parallel or nearly parallel.
  • the shielding range S of the first shade portion 41 that shields the light L2 that is light from the light emitting surface 25 and is incident on the vapor deposition reservoir 33 can be made as small as possible. That is, the range S for shielding the effective reflection surface (the reflection surface excluding the vapor deposition reservoir 33) of the reflection surface 30 can be made as small as possible. Accordingly, the range of the effective reflecting surface of the reflecting surface 30 can be maintained as large as possible.
  • the shielding range S0 of the first shade part 410 in which the edge 440 forms a straight line is not shielded at both the left and right ends, but is largely shielded at the center part.
  • the range of the effective reflection surface of the reflection surface 30 is largely shielded, and reflected light that is not subjected to light distribution control by the vapor deposition reservoir 33 is generated.
  • the edge 440 of the first shade portion 410 shown in FIG. 9B forms a straight line, the above-described problem occurs.
  • the edge 44 of the first shade portion 41 shown in FIG. 9A has a concave curve, the occurrence of the above-described problem can be prevented.
  • the semiconductor-type light source 2 or the connector 24 that is electrically connected to the semiconductor-type light source 2 Of the one end portion of the shade member 4 (the bent end portion formed by bending one end portion of the mounting portion 40), the semiconductor-type light source 2 or the connector 24 that is electrically connected to the semiconductor-type light source 2; An opening 45 is provided at a position where at least one of them (in this example, the semiconductor-type light source 2) is located.
  • the opening 45 and the insertion space 34 are continuous.
  • the second shade portion 42 is provided at the other end portion of the mounting portion 40 (the front end portion and the end portion on the light reflection direction side of the reflection surface 30 with respect to the light emitting surface 25). That is, the second shade portion 42 is provided by bending the central portion of the mounting portion 40 to one side (lower side) and bending the bent portion to the first shade portion 41 side (rear side). It has been.
  • a space 46 is formed in the central portion of the mounting portion 40 after the second shade portion 42 is provided. The void 46 and the opening 45 are continuous.
  • the second shade portion 42 is disposed on the opposite side of the first shade portion 41 with the light emitting surface 25 interposed therebetween.
  • the second shade portion 42 is a direct light from the light emitting surface 25 (of the light emitted from the light emitting surface 25, the light emitted toward the light reflecting direction of the reflecting surface 30), Light L3 that is not subjected to light distribution control by the surface 30 or the like).
  • the heat sink member 5 includes a horizontal plate portion 50 and fin portions 51.
  • the semiconductor light source 2, the reflector 3, and the shade member 4 are held (fixed) by the screws 23 and 43 on one surface (lower surface) of the horizontal plate portion 50.
  • a plurality of vertical plate-shaped fin portions 51 are integrally provided on the other surface (upper surface) of the horizontal plate portion 50.
  • the fin portion 51 releases heat generated in the light emitting chip 20 of the semiconductor light source 2 to the outside.
  • bracket member 6 (Description of bracket member 6) As shown in FIGS. 2 and 3, the bracket member 6 is substantially H-shaped when viewed from the front.
  • the heat sink member 5 is fixed to the central portion of the bracket member 6.
  • the bracket member 6 and the heat sink member 5 may have an integral structure.
  • a cover member 60 that is knurled is attached to the bracket member 6.
  • the bracket member 6 and the lamp housing are provided with the optical axis adjusting mechanism 10 for the vertical direction and the horizontal direction.
  • the lamp units 2, 3, 4, 5 and 6 are disposed in the lamp chamber and attached to the lamp housing via the optical axis adjustment mechanisms 10 for the vertical direction and the horizontal direction. It has been.
  • the vehicle headlamp 1 according to the first embodiment is configured as described above, and the operation thereof will be described below.
  • the light emitting chip 20 of the semiconductor type light source 2 is turned on. Then, most of the light L1 emitted from the light emitting surface 25 of the light emitting chip 20 is reflected by the reflecting surface 30 of the reflector 3. As shown in FIG. 10, the reflected light reflected by the reflecting surface 30 is distributed to a low beam light distribution pattern LP having an oblique cutoff line CL1, a horizontal cutoff line CL2, an elbow point E, and a high luminous intensity band HZ. To the front of the vehicle.
  • the light L 2 that is about to enter the vapor deposition reservoir 33 of the reflecting surface 30 is shielded by the first shade portion 41 of the shade member 4.
  • the first shade portion 41 of the shade member 4 As a result, it is possible to reliably prevent the light L2 from the light emitting surface 25 from entering the vapor deposition reservoir 33, as indicated by the dashed arrows in FIGS.
  • the inner surface of the cover member 60 on the front side of the reflection surface 30 (the light reflection direction side of the reflection surface 30) is knurled. Therefore, even if a part of the direct light L3 from the light emitting surface 25 of the light emitting chip 20 is incident on the inner surface of the cover member 60 on the front side of the reflecting surface 30, the knurled surface on the inner surface of the cover member 60 A part of the direct light L3 is diffusely reflected. This does not affect the low beam light distribution pattern LP.
  • the vehicle headlamp 1 includes at least one of the light from the light emitting surface 25 of the semiconductor-type light source 2 by the first shade portion 41 as a shade provided in the heat sink member 5 as a holding member.
  • the light L2 incident on the vapor deposition reservoir 33 of the reflecting surface 30 can be shielded (see broken line arrows in FIGS. 1 and 8). Thereby, it is possible to prevent generation of reflected light that is reflected by the vapor deposition reservoir 33 and is not subjected to light distribution control.
  • the light distribution pattern LP in this example can control the light distribution pattern LP for the low beam with high accuracy, a good light distribution pattern LP for the low beam can be obtained.
  • the first shade portion 41 has at least one of a cut-off line (an oblique cut-off line CL1 and a horizontal cut-off line CL2) of the light distribution pattern LP for the low beam on the reflection surface 30.
  • a cut-off line an oblique cut-off line CL1 and a horizontal cut-off line CL2
  • a good low beam light distribution pattern LP is obtained.
  • the parabolic reflection surface 30 causes the first shade portion 41.
  • the boundary line of the formed shielding range S is a straight line or a substantially straight line when viewed from the front. For this reason, the boundary line of the shielding range S that forms a straight line or a substantially straight line and the boundary line of the vapor deposition reservoir 33 that forms a straight line or a substantially straight line are parallel or substantially parallel. Thereby, the shielding range S formed by the 1st shade part 41 can be made as small as possible.
  • the range S that shields the effective reflecting surface of the reflecting surface 30 can be made as small as possible. Accordingly, the range of the effective reflecting surface of the reflecting surface 30 (particularly, the central segment 31) can be maintained as large as possible. As a result, a good low beam light distribution pattern LP is obtained.
  • At least one of the semiconductor-type light source 2 and the connector 24 that is electrically connected to the semiconductor-type light source 2 among the one end portions of the shade member 4 is located.
  • An opening 45 is provided at the location.
  • the shade member 4 is located at a position where the connector 24 is inserted between the center of the upper end of the reflector 3 (that is, the upper end of the central segment 31) and the horizontal plate 50 of the heat sink member 5.
  • An insertion space 34 that is continuous with the opening 45 is provided. Due to this insertion space 34, the vapor deposition reservoir 33 of the reflector 3 (particularly, the central segment 31) is positioned below the light emitting surface 25 of the semiconductor light source 2.
  • the vapor deposition reservoir 33 is located at a position where the light L2 from the light emitting surface 25 reaches. For this reason, in this state, the light L2 from the light emitting surface 25 enters the vapor deposition reservoir 33.
  • the vehicular headlamp 1 according to the first embodiment can shield the light L ⁇ b> 2 incident on the vapor deposition reservoir 33 by providing the first shade portion 41. As a result, even if the insertion space 34 connected to the opening 45 of the shade member 4 is provided at the center of the upper end of the reflector 3, the light L2 incident on the vapor deposition reservoir 33 can be shielded. A light distribution pattern LP is obtained.
  • the first shade portion 41 and the second shade portion 42 as a direct light shielding shade have an integral structure. And the relative position of the second shade portion 42 are determined. For this reason, by fixing the shade member 4 to the heat sink member 5 with the screw 43, the relative position variation between the first shade portion 41 and the second shade portion 42 is small. As a result, since the light distribution pattern LP for low beam can be controlled with high accuracy, a good light distribution pattern LP for low beam can be obtained. In addition, since the positioning structure and the fixing structure of the first shade portion 41 and the second shade portion 42 can be shared, the number of parts and the number of assembly steps can be reduced correspondingly, resulting in the manufacturing cost. Can be made cheaper.
  • Embodiment 2 (Description of Configuration of Embodiment 2) 11 and 12 show Embodiment 2 of a vehicle headlamp according to the present invention.
  • the configuration of the vehicle headlamp according to the second embodiment will be described.
  • the same reference numerals as those in FIGS. 1 to 10 denote the same components.
  • the vehicle headlamp 1 according to the first embodiment includes the shade member 4 provided with the first shade portion 41.
  • the first shade portion 54 is integrally provided on the heat sink member 5.
  • the planar view shape of the first shade portion 54 forms a parabolic shape following the parabolic reflector 3 as shown in FIG. For this reason, even if the edge of the 1st shade part 54 is made into a straight line instead of a concave curve, the boundary line of the shielding range formed in the reflective surface 30 can be made into a straight line.
  • the shade member 4 is obtained by cutting a bent end portion of one end portion of the attachment portion 40 of the shade member 4 of the first embodiment. Further, the connection direction of the connector 24 of the semiconductor light source 2 is substantially orthogonal to the light reflection direction of the reflector 3. For this reason, it is not necessary to provide an opening in the first shade portion 54.
  • the vehicle headlamps 1 and 100 when the vehicle is on the left side will be described.
  • the present invention can also be applied to a vehicle headlamp when the vehicle is on the right side.
  • the light distribution pattern is controlled by the reflecting surface 30 (the central segment 31 and the left and right segments 32) of the reflector 3.
  • the primary light distribution control of the light distribution pattern is performed on the reflecting surface of the reflector, and the secondary light distribution control of the light distribution pattern is performed by the lens to form a predetermined light distribution pattern. There may be.
  • the light distribution pattern is a low beam light distribution pattern LP.
  • the light distribution pattern may be a light distribution pattern other than the low beam light distribution pattern LP, such as a fog lamp light distribution pattern.
  • the vapor deposition reservoir 33 is present at least at the end of the reflecting surface 30 on the light emitting surface 25 side.
  • a good light distribution is achieved. A pattern is obtained.
  • connection direction of the connector 24 of the semiconductor light source 2 is substantially parallel to the light reflection direction of the reflector 3.
  • connection direction of the connector 24 of the semiconductor light source 2 may be substantially orthogonal to the light reflection direction of the reflector 3. In this case, it is not necessary to provide the opening 45 in the first shade portion 41.
  • connection direction of the connector 24 of the semiconductor light source 2 is substantially orthogonal to the light reflection direction of the reflector 3.
  • the connection direction of the connector 24 of the semiconductor light source 2 may be substantially parallel to the light reflection direction of the reflector 3. In this case, it is necessary to provide an opening in the first shade portion 54.

Abstract

[Problem] With conventional vehicle headlights a favorable light distribution pattern cannot be obtained. [Solution] The present invention is provided with a semiconductor-type light source (2), a reflector (3), a shade member (4), and a heat sink member (5). A reflection surface (30) of the reflector (3) is formed by vapor deposition. A vapor deposition accumulation section (33) is formed, at the time of vapor deposition, at an edge of the reflection surface (30) at the light emission surface (25) side of the semiconductor-type light source (2). The heat sink member (5) is provided with a first shade part (41) for shading, of the light from the light emission surface (25) of the semiconductor-type light source (2), at least the light (L2) incident on the vapor deposition accumulation section (33). By this invention, a favorable light distribution pattern (LP) for low beams can be obtained.

Description

車両用前照灯Vehicle headlamp
　この発明は、半導体型光源とリフレクタと保持部材とを備える車両用前照灯に関するものである。特に、この発明は、良好な（理想の）配光パターンが得られる車両用前照灯に関するものである。 The present invention relates to a vehicle headlamp including a semiconductor light source, a reflector, and a holding member. In particular, the present invention relates to a vehicle headlamp capable of obtaining a good (ideal) light distribution pattern.
　この種の車両用前照灯は、従来からある（たとえば、特許文献１）。以下、従来の車両用前照灯について説明する。従来の車両用前照灯は、発光モジュールと、反射面を有するリフレクタと、発光モジュールおよびリフレクタを支持する支持部材と、を備えるものである。発光モジュールからの光は、反射面で反射されて、所定の配光パターンで車両の前方に照射される。 This type of vehicle headlamp has been conventionally used (for example, Patent Document 1). Hereinafter, a conventional vehicle headlamp will be described. A conventional vehicular headlamp includes a light emitting module, a reflector having a reflecting surface, and a support member that supports the light emitting module and the reflector. The light from the light emitting module is reflected by the reflecting surface and is irradiated in front of the vehicle with a predetermined light distribution pattern.
特開２０１１－２３８５１１号公報JP2011-238511A
　ところが、従来の車両用前照灯においては、少なくとも反射面の発光面側の端部に、角の湾曲面、蒸着溜り、バリなどがある場合がある。これらの、角の湾曲面、蒸着溜り、バリなどで反射した反射光は、配光制御されていない。このために、良好な配光パターンが得られない場合がある。 However, in a conventional vehicle headlamp, there is a case where there is a curved surface of a corner, a deposition pool, a burr, etc. at least at the end of the light emitting surface of the reflecting surface. The reflected light reflected by the curved surface of the corner, the deposition reservoir, the burr and the like is not subjected to light distribution control. For this reason, a good light distribution pattern may not be obtained.
　この発明が解決しようとする課題は、従来の車両用前照灯では、良好な配光パターンが得られない場合があるという点にある。 The problem to be solved by the present invention is that a good light distribution pattern may not be obtained with a conventional vehicle headlamp.
　この発明（請求項１にかかる発明）は、発光面を有する半導体型光源と、発光面からの光を反射させる反射面を有するリフレクタと、半導体型光源およびリフレクタを保持する保持部材と、を備え、保持部材には、発光面からの光のうち、少なくとも反射面の発光面側の端部に入射する光を遮蔽するシェードが、設けられている、ことを特徴とする。 The present invention (the invention according to claim 1) includes a semiconductor light source having a light emitting surface, a reflector having a reflecting surface for reflecting light from the light emitting surface, and a holding member for holding the semiconductor light source and the reflector. The holding member is provided with a shade that shields at least light incident from the light emitting surface on the light emitting surface side of the reflecting surface.
　この発明（請求項２にかかる発明）は、反射面が、カットオフラインおよび高光度帯を有する配光パターンを配光制御し、シェードが、反射面のうち、配光パターンのカットオフラインおよび高光度帯を配光制御する部分の発光面側の端部に入射する光を遮蔽する、ことを特徴とする。 In the present invention (the invention according to claim 2), the reflection surface controls the light distribution pattern having the cutoff line and the high luminous intensity band, and the shade is the cutoff line and the high luminous intensity of the light distribution pattern in the reflection surface. The light incident on the light emitting surface side end of the portion that controls the light distribution of the band is shielded.
　この発明（請求項３にかかる発明）は、反射面が、パラボラ系の反射面からなり、シェードの縁が、凹曲線をなす、ことを特徴とする。 This invention (invention according to claim 3) is characterized in that the reflecting surface is a parabolic reflecting surface, and the edge of the shade forms a concave curve.
　この発明（請求項４にかかる発明）は、シェードのうち、半導体型光源、もしくは、半導体型光源に電気的に接続するコネクタ、の少なくともいずれか一方が位置する箇所には、開口部が、設けられていて、リフレクタと保持部材との間のうち、コネクタが挿入位置する箇所には、開口部と連なる挿入空間が設けられている、ことを特徴とする。 According to the present invention (the invention according to claim 4), an opening is provided at a location where at least one of the semiconductor-type light source or the connector electrically connected to the semiconductor-type light source is located in the shade. In addition, an insertion space connected to the opening is provided at a position where the connector is inserted between the reflector and the holding member.
　この発明（請求項５にかかる発明）は、発光面を挟んでシェードと反対側に配置されている直射光遮蔽シェードを備え、シェードと直射光遮蔽シェードとが、一体構造をなし、保持部材に固定されている、ことを特徴とする。 The present invention (the invention according to claim 5) includes a direct light shielding shade disposed on the opposite side of the shade across the light emitting surface, and the shade and the direct light shielding shade form an integral structure, and are used as a holding member. It is fixed.
　この発明（請求項６にかかる発明）は、シェードが、保持部材に一体に設けられている、ことを特徴とする。 This invention (the invention according to claim 6) is characterized in that the shade is provided integrally with the holding member.
　この発明の車両用前照灯は、保持部材に設けられているシェードにより、半導体型光源の発光面からの光のうち、少なくとも反射面の発光面側の端部に入射する光を遮蔽することができる。これにより、少なくとも反射面の発光面側の端部に、角の湾曲面、蒸着溜り、バリなどがある場合であっても、これらの、角の湾曲面、蒸着溜り、バリなどで反射する反射光であって、配光制御されていない反射光の発生を防ぐことができる。この結果、配光パターンを高精度に配光制御することができるので、良好な配光パターンが得られる。 The vehicle headlamp according to the present invention shields at least light incident on the light emitting surface side of the reflecting surface from light emitted from the light emitting surface of the semiconductor-type light source by a shade provided on the holding member. Can do. As a result, even if there is a curved surface, a deposition pool, burrs, etc. at least on the light emitting surface side of the reflective surface, the reflection reflected by these curved surfaces, deposition pool, burrs, etc. It is possible to prevent generation of reflected light that is light and is not subjected to light distribution control. As a result, since the light distribution pattern can be controlled with high accuracy, a good light distribution pattern can be obtained.
図１は、この発明にかかる車両用前照灯の実施形態１を示す断面図（図３におけるＩ－Ｉ線断面図）である。FIG. 1 is a cross-sectional view (a cross-sectional view taken along the line II in FIG. 3) showing Embodiment 1 of the vehicle headlamp according to the present invention. 図２は、ランプユニットを示す斜視図である。FIG. 2 is a perspective view showing the lamp unit. 図３は、ランプユニットを示す正面図である。FIG. 3 is a front view showing the lamp unit. 図４は、シェード部材を示す斜視図（図１におけるＩＶ矢視図）である。FIG. 4 is a perspective view (a view taken along arrow IV in FIG. 1) showing the shade member. 図５は、シェード部材および半導体型光源およびヒートシンク部材の一部を示す斜視図（図１におけるＩＶ矢視図）である。FIG. 5 is a perspective view (a view taken along arrow IV in FIG. 1) showing a part of the shade member, the semiconductor-type light source, and the heat sink member. 図６は、リフレクタを示す正面図である。FIG. 6 is a front view showing the reflector. 図７は、リフレクタの一部を示す一部拡大正面図である。FIG. 7 is a partially enlarged front view showing a part of the reflector. 図８は、半導体型光源とリフレクタと第１シェード部との相対位置関係を示す平面説明図である。FIG. 8 is an explanatory plan view showing a relative positional relationship among the semiconductor-type light source, the reflector, and the first shade portion. 図９は、第１シェード部の縁を示す一部正面説明図である。FIG. 9 is a partial front explanatory view showing an edge of the first shade portion. 図１０は、リフレクタで反射されて得られる配光パターン（ロービーム用配光パターン）を示す説明図である。FIG. 10 is an explanatory diagram showing a light distribution pattern (low beam light distribution pattern) obtained by being reflected by a reflector. 図１１は、この発明にかかる車両用前照灯の実施形態２を示す断面図（図３におけるＩ－Ｉ線断面図）である。FIG. 11 is a cross-sectional view (a cross-sectional view taken along the line II in FIG. 3) showing Embodiment 2 of the vehicle headlamp according to the present invention. 図１２は、半導体型光源とリフレクタと第１シェード部との相対位置関係を示す平面説明図である。FIG. 12 is an explanatory plan view showing a relative positional relationship among the semiconductor-type light source, the reflector, and the first shade portion.
　以下、この発明にかかる車両用前照灯の実施形態（実施例）の２例を図面に基づいて詳細に説明する。なお、この実施形態によりこの発明が限定されるものではない。この明細書において、前、後、上、下、左、右は、この発明にかかる車両用前照灯を車両に搭載した際の前、後、上、下、左、右である。 Hereinafter, two examples of embodiments (examples) of a vehicle headlamp according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In this specification, front, rear, upper, lower, left, and right are front, rear, upper, lower, left, and right when the vehicle headlamp according to the present invention is mounted on a vehicle.
　図１０において、符号「ＶＵ－ＶＤ」は、スクリーンの上下の垂直線を示す。符号「ＨＬ－ＨＲ」は、スクリーンの左右の水平線を示す。図１０は、コンピュータシミュレーションにより作図されたスクリーン上の配光パターンを簡略化して示す等光度曲線の説明図であって、中央の等光度曲線は、高光度帯ＨＺであって、その他の曲線は、外に行くにしたがって低くなる光度帯である。 In FIG. 10, reference numeral “VU-VD” indicates vertical lines on the upper and lower sides of the screen. The symbol “HL-HR” indicates a horizontal line on the left and right of the screen. FIG. 10 is an explanatory diagram of an isoluminous curve that shows a simplified light distribution pattern on a screen drawn by computer simulation. The central isoluminous curve is a high luminous intensity band HZ, and the other curves are It's a light intensity zone that gets lower as you go out.
（実施形態１の構成の説明）
　図１～図１０は、この発明にかかる車両用前照灯の実施形態１を示す。以下、この実施形態１における車両用前照灯の構成について説明する。図中、符号１は、この実施形態１における車両用前照灯（たとえば、ヘッドランプなど）である。前記車両用前照灯１は、左側通行用の車両の前部の左右両端部に搭載されている。 (Description of Configuration of Embodiment 1)
1 to 10 show Embodiment 1 of a vehicle headlamp according to the present invention. Hereinafter, the configuration of the vehicle headlamp in the first embodiment will be described. In the figure, reference numeral 1 denotes a vehicle headlamp (for example, a headlamp) in the first embodiment. The vehicle headlamp 1 is mounted on both left and right ends of a front portion of a vehicle for left-hand traffic.
（車両用前照灯１の説明）
　前記車両用前照灯１は、図１～図３に示すように、ランプハウジング（図示せず）と、ランプレンズ（図示せず）と、半導体型光源２と、リフレクタ３と、シェード部材４と、保持部材としてのヒートシンク部材５と、ブラケット部材６と、を備えるものである。 (Description of the vehicle headlamp 1)
As shown in FIGS. 1 to 3, the vehicle headlamp 1 includes a lamp housing (not shown), a lamp lens (not shown), a semiconductor light source 2, a reflector 3, and a shade member 4. And a heat sink member 5 as a holding member and a bracket member 6.
　前記半導体型光源２および前記リフレクタ３および前記シェード部材４および前記ヒートシンク部材５および前記ブラケット部材６は、ランプユニットを構成する。前記ランプハウジングおよび前記ランプレンズは、灯室（図示せず）を画成する。前記ランプユニット２、３、４、５、６は、前記灯室内に配置されていて、かつ、上下方向用および左右方向用の光軸調整機構１０を介して前記ランプハウジングに取り付けられている。 The semiconductor-type light source 2, the reflector 3, the shade member 4, the heat sink member 5, and the bracket member 6 constitute a lamp unit. The lamp housing and the lamp lens define a lamp chamber (not shown). The lamp units 2, 3, 4, 5, 6 are disposed in the lamp chamber, and are attached to the lamp housing via optical axis adjustment mechanisms 10 for the vertical direction and the horizontal direction.
（半導体型光源２の説明）
　前記半導体型光源２は、図１、図５に示すように、この例では、たとえば、ＬＥＤ、ＯＥＬまたはＯＬＥＤ（有機ＥＬ）などの自発光半導体型光源である。前記半導体型光源２は、発光チップ（ＬＥＤチップ）２０と、前記発光チップ２０を封止樹脂部材で封止したパッケージ（ＬＥＤパッケージ）と、前記パッケージを実装した基板２１と、前記基板２１に取り付けられていて前記発光チップ２０に電気的に接続されている端子（オスターミナル）２２と、から構成されている。前記端子２２は、前記リフレクタ３の光の反射方向とほぼ平行に設けられている。 (Description of semiconductor light source 2)
As shown in FIGS. 1 and 5, the semiconductor-type light source 2 is a self-luminous semiconductor-type light source such as an LED, an OEL, or an OLED (organic EL) in this example. The semiconductor light source 2 includes a light emitting chip (LED chip) 20, a package (LED package) in which the light emitting chip 20 is sealed with a sealing resin member, a substrate 21 on which the package is mounted, and an attachment to the substrate 21. And a terminal (male terminal) 22 which is electrically connected to the light emitting chip 20. The terminal 22 is provided substantially parallel to the light reflection direction of the reflector 3.
　前記基板２１は、スクリュー２３により、前記ヒートシンク部材５に固定されている。この結果、前記半導体型光源２は、前記ヒートシンク部材５に保持（固定）されている。前記半導体型光源２と前記ヒートシンク部材５とは、小円形孔、小長円形孔、ピンなどにより、位置決めされている。 The substrate 21 is fixed to the heat sink member 5 with screws 23. As a result, the semiconductor light source 2 is held (fixed) on the heat sink member 5. The semiconductor light source 2 and the heat sink member 5 are positioned by a small circular hole, a small oval hole, a pin or the like.
　前記端子２２には、コネクタ（メスコネクタ）２４が電気的にかつ機械的に着脱可能に取り付けられている。前記コネクタ２４は、ハーネスを介して電源（バッテリー）に電気的に接続されている。この結果、前記発光チップ２０への電流供給が可能となる。前記端子２２と前記コネクタ２４との接続方向は、前記リフレクタ３の光の反射方向とほぼ平行である。 A connector (female connector) 24 is detachably attached to the terminal 22 electrically and mechanically. The connector 24 is electrically connected to a power source (battery) via a harness. As a result, current can be supplied to the light emitting chip 20. The connection direction between the terminal 22 and the connector 24 is substantially parallel to the light reflection direction of the reflector 3.
　前記発光チップ２０は、平面矩形形状（平面長方形状）をなす。すなわち、複数個たとえば４個の正方形のチップを左右の水平方向に配列してなるものである。なお、１個の長方形のチップ、あるいは、１個の正方形のチップ、を使用しても良い。前記発光チップ２０の長方形の下面は、発光面２５をなす。この結果、前記発光面２５は、下側に向いている。前記発光チップ２０の前記発光面２５の中心は、前記リフレクタ３の基準焦点もしくはその近傍に位置し、かつ、前記リフレクタ３の基準光軸（基準軸）上もしくはその近傍に位置する。 The light emitting chip 20 has a planar rectangular shape (planar rectangular shape). That is, a plurality of, for example, four square chips are arranged in the horizontal direction on the left and right. Note that one rectangular chip or one square chip may be used. The rectangular lower surface of the light emitting chip 20 forms a light emitting surface 25. As a result, the light emitting surface 25 faces downward. The center of the light emitting surface 25 of the light emitting chip 20 is located at or near the reference focal point of the reflector 3 and on or near the reference optical axis (reference axis) of the reflector 3.
（リフレクタ３の説明）
　前記リフレクタ３は、図１～図３、図６～図８に示すように、回転放物線（回転放物面）の一部の形状、すなわち、上部と前部とを除いた下部と後部と左右両側部とからなる形状をなす。前記リフレクタ３は、前記ヒートシンク部材５にスクリューなどにより保持（固定）されている。前記リフレクタ３と前記ヒートシンク部材５とは、小円形孔、小長円形孔、ピンなどにより、位置決めされている。 (Description of reflector 3)
As shown in FIGS. 1 to 3 and FIGS. 6 to 8, the reflector 3 has a shape of a part of a rotating parabola (rotating paraboloid), that is, a lower part, a rear part, and a left and right part excluding an upper part and a front part. A shape consisting of both sides. The reflector 3 is held (fixed) to the heat sink member 5 by a screw or the like. The reflector 3 and the heat sink member 5 are positioned by a small circular hole, a small oval hole, a pin or the like.
　前記リフレクタ３の内面には、反射面３０が設けられている。前記反射面３０は、下側に向いている前記発光チップ２０の前記発光面２５と対向する。前記反射面３０は、パラボラ系の自由曲面（ＮＵＲＢＳ曲面）からなる反射面である。この結果、前記反射面３０は、基準焦点および基準光軸を有する。前記反射面３０の前記基準焦点は、前記半導体型光源２の前記発光面２５の中心にもしくはその近傍に位置する。前記反射面３０の前記基準光軸は、前記半導体型光源２の前記発光面２５の中心をもしくはその近傍を通る。 A reflecting surface 30 is provided on the inner surface of the reflector 3. The reflective surface 30 faces the light emitting surface 25 of the light emitting chip 20 facing downward. The reflection surface 30 is a reflection surface made of a parabolic free-form surface (NURBS surface). As a result, the reflecting surface 30 has a reference focal point and a reference optical axis. The reference focal point of the reflective surface 30 is located at or near the center of the light emitting surface 25 of the semiconductor light source 2. The reference optical axis of the reflecting surface 30 passes through or near the center of the light emitting surface 25 of the semiconductor light source 2.
　前記反射面３０は、前記半導体型光源２の前記発光面２５からの光Ｌ１を、図１中の実線矢印に示すように、ロービーム用配光パターンＬＰ（図１０参照）として、前記車両の前方に反射させる反射面である。前記ロービーム用配光パターンＬＰは、図１０に示すように、斜めカットオフラインＣＬ１と水平カットオフラインＣＬ２とエルボー点（前記斜めカットオフラインＣＬ１と前記水平カットオフラインＣＬ２との交点もしくはその近傍の点）Ｅと高光度帯ＨＺとを有する。 The reflection surface 30 uses the light L1 from the light emitting surface 25 of the semiconductor-type light source 2 as a low beam light distribution pattern LP (see FIG. 10) as shown in the solid line arrow in FIG. This is a reflective surface that reflects light. As shown in FIG. 10, the low beam light distribution pattern LP includes an oblique cut-off line CL1, a horizontal cut-off line CL2, and an elbow point (a point at or near the intersection of the oblique cut-off line CL1 and the horizontal cut-off line CL2) E. And a high luminous intensity zone HZ.
　前記ロービーム用配光パターンＬＰにおいて、前記斜めカットオフラインＣＬ１は、走行車線側（左側走行の場合は左側、右側走行の場合は右側）に位置し、前記水平カットオフラインＣＬ２は、対向車線側（左側走行の場合は右側、右側走行の場合は左側）に位置する。なお、前記斜めカットオフラインＣＬ１に対して、走行車線側にも水平カットオフラインが形成されている。 In the low beam light distribution pattern LP, the oblique cut-off line CL1 is located on the traveling lane side (left side for left side traveling, right side for right side traveling), and the horizontal cutoff line CL2 is on the opposite lane side (left side). It is located on the right side for travel and on the left side for right travel. Note that a horizontal cut-off line is also formed on the traveling lane side with respect to the oblique cut-off line CL1.
　前記反射面３０は、複数のセグメント３１、３２に分割されている。この例では、左右に１２個に分割されている。前記複数のセグメントは、中央のセグメント３１と、左右両側のセグメント３２とに分割されている。前記中央のセグメント３１は、この例では、１個であるが、複数個であっても良い。また、前記左右両側のセグメント３２は、この例では、右側が５個、左側が６個であるが、個数は特に限定しない。 The reflection surface 30 is divided into a plurality of segments 31 and 32. In this example, it is divided into 12 pieces on the left and right. The plurality of segments are divided into a central segment 31 and left and right segments 32. The central segment 31 is one in this example, but may be plural. Further, in this example, the right and left segments 32 are five on the right side and six on the left side, but the number is not particularly limited.
　前記中央のセグメント３１は、集光パターンを配光制御して形成するものである。前記集光パターンは、前記カットオフラインおよび前記高光度帯ＨＺを有する。前記カットオフラインは、前記斜めカットオフラインＣＬ１、前記水平カットオフラインＣＬ２のうち少なくともいずれか一方のカットオフラインである。前記左右両側のセグメント３２は、拡散パターンを配光制御して形成するものである。前記集光パターンと前記拡散パターンとを重畳して前記ロービーム用配光パターンＬＰが得られる。 The central segment 31 is formed by controlling the light distribution of the condensing pattern. The condensing pattern has the cut-off line and the high luminous intensity band HZ. The cut-off line is at least one of the oblique cut-off line CL1 and the horizontal cut-off line CL2. The left and right segments 32 are formed by controlling the light distribution of the diffusion pattern. The low beam light distribution pattern LP is obtained by superimposing the condensing pattern and the diffusion pattern.
　前記反射面３０は、蒸着により形成されている。前記蒸着の構造は、まず、前記リフレクタ３の母材の表面に密着性を高めるためのアンダーコート層が形成され、つぎに、前記アンダーコート層の上に反射層のアルミ蒸着層が形成され、さらに、前記アルミ蒸着層の上に耐候性を高めるためのトップコート層が形成されてなる構造である。前記蒸着時において、前記リフレクタ３の前記反射面３０のうち、前記発光面２５側の端部（上端部）には、蒸着溜り部３３が形成されている。前記蒸着溜り部３３が形成される範囲は、前記リフレクタ３の上端部から、図１中の二点鎖線にて示す境界線、あるいは、図７中の破線にて示す境界線までの範囲である。前記蒸着溜り部３３の境界線は、正面視で直線もしくはほぼ直線をなす。 The reflection surface 30 is formed by vapor deposition. In the vapor deposition structure, first, an undercoat layer for enhancing adhesion is formed on the surface of the base material of the reflector 3, and then an aluminum vapor deposition layer as a reflective layer is formed on the undercoat layer. Furthermore, a top coat layer for improving weather resistance is formed on the aluminum vapor deposition layer. During the vapor deposition, a vapor deposition reservoir 33 is formed at an end (upper end) on the light emitting surface 25 side of the reflecting surface 30 of the reflector 3. The range in which the vapor deposition reservoir 33 is formed is a range from the upper end of the reflector 3 to a boundary line indicated by a two-dot chain line in FIG. 1 or a boundary line indicated by a broken line in FIG. . The boundary line of the vapor deposition reservoir 33 forms a straight line or a substantially straight line when viewed from the front.
　前記リフレクタ３の上端部（前記発光面２５側の端部）の中央部は、水平もしくはほぼ水平をなす。前記リフレクタ３の上端部の左右両端部は、傾斜している。前記リフレクタ３の上端部の中央部と、前記ヒートシンク部材５との間のうち、前記コネクタ２４が挿入位置する箇所には、挿入空間３４が設けられている。前記挿入空間３４により、前記リフレクタ３の前記蒸着溜り部３３は、前記発光面２５よりも下側に位置する。すなわち、前記蒸着溜り部３３は、前記発光面２５からの光Ｌ２が到達する位置に位置する。 The central portion of the upper end portion (the end portion on the light emitting surface 25 side) of the reflector 3 is horizontal or almost horizontal. The left and right end portions of the upper end portion of the reflector 3 are inclined. An insertion space 34 is provided at a position where the connector 24 is inserted between the center portion of the upper end portion of the reflector 3 and the heat sink member 5. Due to the insertion space 34, the vapor deposition reservoir 33 of the reflector 3 is positioned below the light emitting surface 25. That is, the vapor deposition reservoir 33 is located at a position where the light L2 from the light emitting surface 25 reaches.
（シェード部材４の説明）
　前記シェード部材４は、図１、図３～図５、図８、図９に示すように、取付部４０と、シェードとしての第１シェード部４１と、直射光遮蔽シェードとしての第２シェード部４２と、から構成されている。前記取付部４０と前記第１シェード部４１と前記第２シェード部４２とは、一体構造をなす。 (Description of shade member 4)
As shown in FIGS. 1, 3 to 5, 8, and 9, the shade member 4 includes a mounting portion 40, a first shade portion 41 as a shade, and a second shade portion as a direct light shielding shade. 42. The attachment portion 40, the first shade portion 41, and the second shade portion 42 form an integral structure.
　前記シェード部材４は、たとえば薄鋼板の表面につや消しの黒色塗装を施したものである。前記シェード部材４は、プレス加工により加工されている。前記取付部４０は、四角形形状をなしていて、スクリュー４３により、前記ヒートシンク部材５に固定されている。この結果、前記シェード部材４は、前記ヒートシンク部材５に保持（固定）されている。前記シェード部材４と前記ヒートシンク部材５とは、小円形孔、小長円形孔、ピンなどにより、位置決めされている。 The shade member 4 is obtained by, for example, applying a matte black coating on the surface of a thin steel plate. The shade member 4 is processed by pressing. The attachment portion 40 has a quadrangular shape and is fixed to the heat sink member 5 by a screw 43. As a result, the shade member 4 is held (fixed) to the heat sink member 5. The shade member 4 and the heat sink member 5 are positioned by small circular holes, small elliptical holes, pins, and the like.
　前記第１シェード部４１は、前記発光面２５からの光のうち、少なくとも前記反射面３０の前記中央のセグメント３１の前記蒸着溜り部３３に入射する光Ｌ２を遮蔽するものである。前記第１シェード部４１の遮蔽範囲Ｓは、前記リフレクタ３の上端部から図７中の実線にて示す境界線までの範囲である。図７中の実線にて示す前記第１シェード部４１の前記遮蔽範囲Ｓの境界線は、図７中の破線にて示す前記蒸着溜り部３３の境界線から若干下側に位置する。なお、前記第１シェード部４１の前記遮蔽範囲Ｓの境界線と前記蒸着溜り部３３の境界線とは、一致もしくはほぼ一致しても良い。 The first shade portion 41 shields at least the light L2 incident on the vapor deposition reservoir 33 of the central segment 31 of the reflective surface 30 out of the light from the light emitting surface 25. The shielding range S of the first shade portion 41 is a range from the upper end portion of the reflector 3 to a boundary line indicated by a solid line in FIG. The boundary line of the shielding range S of the first shade part 41 indicated by the solid line in FIG. 7 is located slightly below the boundary line of the vapor deposition reservoir part 33 indicated by the broken line in FIG. In addition, the boundary line of the shielding range S of the first shade part 41 and the boundary line of the vapor deposition pool part 33 may coincide or substantially coincide.
　前記第１シェード部４１は、前記取付部４０の一端部（後端部であって、前記発光面２５に対して前記反射面３０の光の反射方向と反対側の端部）に設けられている。すなわち、前記第１シェード部４１は、前記取付部４０の一端部を一方側（下側）に折り曲げて、その折曲端部の両端部をカットした残りの折曲端部の中央部に設けられている。 The first shade portion 41 is provided at one end of the mounting portion 40 (the rear end, which is the end opposite to the light reflecting direction of the reflecting surface 30 with respect to the light emitting surface 25). Yes. That is, the first shade portion 41 is provided at the central portion of the remaining bent end portion where one end portion of the mounting portion 40 is bent to one side (lower side) and both end portions of the bent end portion are cut. It has been.
　前記第１シェード部４１の縁（下縁）４４は、凹曲線をなす。すなわち、図９（Ａ）に示すように、前記第１シェード部４１の前記縁４４の左右両端部は、外側（下側）に突出し、かつ、前記第１シェード部４１の前記縁４４の中央部は、内側（上側）に凹んでいる。 The edge (lower edge) 44 of the first shade part 41 forms a concave curve. That is, as shown in FIG. 9A, the left and right ends of the edge 44 of the first shade portion 41 protrude outward (lower side), and the center of the edge 44 of the first shade portion 41 The part is recessed inward (upper side).
　この結果、図８に示すように、平面視放物線をなす前記反射面３０に対して、前記第１シェード部４１が平面視直線をなす場合であっても、前記遮蔽範囲Ｓの境界線（図７中の実線を参照）は、正面視で直線もしくはほぼ直線となる。このために、直線もしくはほぼ直線をなす前記遮蔽範囲Ｓの境界線（図７中の実線を参照）と、直線もしくはほぼ直線をなす前記蒸着溜り部３３の境界線（図７中の破線を参照）とは、平行もしくはほぼ平行となる。これにより、前記発光面２５からの光であって、前記蒸着溜り部３３に入射する光Ｌ２を遮蔽する前記第１シェード部４１の前記遮蔽範囲Ｓをできる限り小さくすることができる。すなわち、前記反射面３０のうち有効反射面（前記蒸着溜り部３３を除いた反射面）を遮蔽する範囲Ｓをできる限り小さくすることができる。その分、前記反射面３０のうち有効反射面の範囲をできる限り大きく維持することができる。 As a result, as shown in FIG. 8, even if the first shade portion 41 forms a straight line in plan view with respect to the reflecting surface 30 that forms a plan view parabola, the boundary line of the shielding range S (see FIG. 7 is a straight line or a substantially straight line in front view. For this purpose, a boundary line of the shielding range S that forms a straight line or a substantially straight line (see the solid line in FIG. 7) and a boundary line of the deposition reservoir 33 that forms a straight line or a substantially straight line (see the broken line in FIG. 7). ) Is parallel or nearly parallel. Thereby, the shielding range S of the first shade portion 41 that shields the light L2 that is light from the light emitting surface 25 and is incident on the vapor deposition reservoir 33 can be made as small as possible. That is, the range S for shielding the effective reflection surface (the reflection surface excluding the vapor deposition reservoir 33) of the reflection surface 30 can be made as small as possible. Accordingly, the range of the effective reflecting surface of the reflecting surface 30 can be maintained as large as possible.
　ここで、図９（Ｂ）に示す第１シェード部４１０の縁４４０が直線をなす場合の不具合について説明する。図８に示すように、平面視直線をなす前記第１シェード部４１０から平面視放物線をなす前記反射面３０までの光Ｌ２の光路長が異なる。このために、前記第１シェード部４１０の前記縁４４０が直線をなすと、図７中の符号Ｓ０に示す遮蔽範囲となる。前記遮蔽範囲Ｓ０の境界線は、図７中の二点鎖線にて示すように、左右両端部が上側に突出し、かつ、中央部が下側に凹んでいる。 Here, a problem when the edge 440 of the first shade part 410 shown in FIG. 9B forms a straight line will be described. As shown in FIG. 8, the optical path length of the light L2 from the first shade part 410 forming a straight line in plan view to the reflecting surface 30 forming a parabola in plan view is different. For this reason, when the edge 440 of the first shade portion 410 forms a straight line, a shielding range indicated by reference sign S0 in FIG. 7 is obtained. As shown by the two-dot chain line in FIG. 7, the left and right ends protrude upward and the center of the boundary of the shielding range S0 is recessed downward.
　この結果、前記縁４４０が直線をなす前記第１シェード部４１０の前記遮蔽範囲Ｓ０は、左右両端部において遮蔽されておらず、一方、中央部において大きく遮蔽されている。これでは、前記反射面３０のうち有効反射面の範囲を大きく遮蔽し、かつ、前記蒸着溜り部３３による配光制御されていない反射光が発生する。このように、図９（Ｂ）に示す前記第１シェード部４１０の前記縁４４０が直線をなす場合においては、前記の不具合が発生する。これに対して、図９（Ａ）に示す前記第１シェード部４１の前記縁４４が凹曲線をなす場合においては、前記の不具合の発生を防止することができる。 As a result, the shielding range S0 of the first shade part 410 in which the edge 440 forms a straight line is not shielded at both the left and right ends, but is largely shielded at the center part. As a result, the range of the effective reflection surface of the reflection surface 30 is largely shielded, and reflected light that is not subjected to light distribution control by the vapor deposition reservoir 33 is generated. As described above, when the edge 440 of the first shade portion 410 shown in FIG. 9B forms a straight line, the above-described problem occurs. On the other hand, when the edge 44 of the first shade portion 41 shown in FIG. 9A has a concave curve, the occurrence of the above-described problem can be prevented.
　前記シェード部材４の一端部（前記取付部４０の一端部を折り曲げてなる折曲端部）のうち、前記半導体型光源２、もしくは、前記半導体型光源２に電気的に接続する前記コネクタ２４、の少なくともいずれか一方（この例では、前記半導体型光源２）が位置する箇所には、開口部４５が、設けられている。前記開口部４５と前記挿入空間３４とは、連なっている。 Of the one end portion of the shade member 4 (the bent end portion formed by bending one end portion of the mounting portion 40), the semiconductor-type light source 2 or the connector 24 that is electrically connected to the semiconductor-type light source 2; An opening 45 is provided at a position where at least one of them (in this example, the semiconductor-type light source 2) is located. The opening 45 and the insertion space 34 are continuous.
　前記第２シェード部４２は、前記取付部４０の他端部（前端部であって、前記発光面２５に対して前記反射面３０の光の反射方向側の端部）に設けられている。すなわち、前記第２シェード部４２は、前記取付部４０の中央部を一方側（下側）に折り曲げて、かつ、その折曲部を前記第１シェード部４１側（後側）に折り曲げて設けられている。前記第２シェード部４２を設けた後の前記取付部４０の中央部には、空所４６が形成されている。前記空所４６と前記開口部４５とは、連なっている。 The second shade portion 42 is provided at the other end portion of the mounting portion 40 (the front end portion and the end portion on the light reflection direction side of the reflection surface 30 with respect to the light emitting surface 25). That is, the second shade portion 42 is provided by bending the central portion of the mounting portion 40 to one side (lower side) and bending the bent portion to the first shade portion 41 side (rear side). It has been. A space 46 is formed in the central portion of the mounting portion 40 after the second shade portion 42 is provided. The void 46 and the opening 45 are continuous.
　前記第２シェード部４２は、前記発光面２５を挟んで前記第１シェード部４１と反対側に配置されている。前記第２シェード部４２は、前記発光面２５からの直射光（前記発光面２５から放射される光のうち、前記反射面３０の光の反射方向側に放射される光であって、前記反射面３０などで配光制御されていない光）Ｌ３を遮蔽するものである。 The second shade portion 42 is disposed on the opposite side of the first shade portion 41 with the light emitting surface 25 interposed therebetween. The second shade portion 42 is a direct light from the light emitting surface 25 (of the light emitted from the light emitting surface 25, the light emitted toward the light reflecting direction of the reflecting surface 30), Light L3 that is not subjected to light distribution control by the surface 30 or the like).
（ヒートシンク部材５の説明）
　前記ヒートシンク部材５は、図１～図３に示すように、水平板部５０と、フィン部５１と、から構成されている。前記水平板部５０の一面（下側の面）には、前記半導体型光源２および前記リフレクタ３および前記シェード部材４が前記スクリュー２３、４３により保持（固定）されている。 (Description of heat sink member 5)
As shown in FIGS. 1 to 3, the heat sink member 5 includes a horizontal plate portion 50 and fin portions 51. The semiconductor light source 2, the reflector 3, and the shade member 4 are held (fixed) by the screws 23 and 43 on one surface (lower surface) of the horizontal plate portion 50.
　前記水平板部５０の他面（上側の面）には、複数枚の垂直板形状の前記フィン部５１が一体に設けられている。前記フィン部５１は、前記半導体型光源２の前記発光チップ２０で発生する熱を外部に放出するものである。 A plurality of vertical plate-shaped fin portions 51 are integrally provided on the other surface (upper surface) of the horizontal plate portion 50. The fin portion 51 releases heat generated in the light emitting chip 20 of the semiconductor light source 2 to the outside.
（ブラケット部材６の説明）
　前記ブラケット部材６は、図２、図３に示すように、正面視ほぼＨ字形状をなす。前記ブラケット部材６の中央部には、前記ヒートシンク部材５が固定されている。なお、前記ブラケット部材６と前記ヒートシンク部材５とは、一体構造のものであっても良い。前記ブラケット部材６には、ローレット加工が施されているカバー部材６０が取り付けられている。 (Description of bracket member 6)
As shown in FIGS. 2 and 3, the bracket member 6 is substantially H-shaped when viewed from the front. The heat sink member 5 is fixed to the central portion of the bracket member 6. The bracket member 6 and the heat sink member 5 may have an integral structure. A cover member 60 that is knurled is attached to the bracket member 6.
　前記ブラケット部材６と前記ランプハウジングとには、前記上下方向用および左右方向用の光軸調整機構１０が設けられている。この結果、前記ランプユニット２、３、４、５、６は、前記灯室内に配置されていて、かつ、前記上下方向用および左右方向用の光軸調整機構１０を介して前記ランプハウジングに取り付けられている。 The bracket member 6 and the lamp housing are provided with the optical axis adjusting mechanism 10 for the vertical direction and the horizontal direction. As a result, the lamp units 2, 3, 4, 5 and 6 are disposed in the lamp chamber and attached to the lamp housing via the optical axis adjustment mechanisms 10 for the vertical direction and the horizontal direction. It has been.
（実施形態１の作用の説明）
　この実施形態１における車両用前照灯１は、以上のごとき構成からなり、以下、その作用について説明する。 (Description of the operation of the first embodiment)
The vehicle headlamp 1 according to the first embodiment is configured as described above, and the operation thereof will be described below.
　半導体型光源２の発光チップ２０を点灯する。すると、発光チップ２０の発光面２５から放射される光の大部分Ｌ１は、リフレクタ３の反射面３０で反射される。反射面３０で反射された反射光は、図１０に示すように、斜めカットオフラインＣＬ１と水平カットオフラインＣＬ２とエルボー点Ｅと高光度帯ＨＺとを有するロービーム用配光パターンＬＰに配光制御されて車両の前方に照射される。 The light emitting chip 20 of the semiconductor type light source 2 is turned on. Then, most of the light L1 emitted from the light emitting surface 25 of the light emitting chip 20 is reflected by the reflecting surface 30 of the reflector 3. As shown in FIG. 10, the reflected light reflected by the reflecting surface 30 is distributed to a low beam light distribution pattern LP having an oblique cutoff line CL1, a horizontal cutoff line CL2, an elbow point E, and a high luminous intensity band HZ. To the front of the vehicle.
　このとき、発光チップ２０の発光面２５からの光のうち、反射面３０の蒸着溜り部３３に入射しようとする光Ｌ２は、シェード部材４の第１シェード部４１により遮蔽される。この結果、図１、図８中の破線矢印に示すように、発光面２５からの光Ｌ２が蒸着溜り部３３に入射するのを確実に防止することができる。これにより、蒸着溜り部３３で反射して配光制御されていない反射光が発生するのを確実に防止することができ、良好なロービーム用配光パターンＬＰが得られる。 At this time, of the light from the light emitting surface 25 of the light emitting chip 20, the light L 2 that is about to enter the vapor deposition reservoir 33 of the reflecting surface 30 is shielded by the first shade portion 41 of the shade member 4. As a result, it is possible to reliably prevent the light L2 from the light emitting surface 25 from entering the vapor deposition reservoir 33, as indicated by the dashed arrows in FIGS. As a result, it is possible to reliably prevent the reflected light that is reflected by the vapor deposition reservoir 33 and is not subjected to light distribution control, and to obtain a good low-beam light distribution pattern LP.
　また、発光チップ２０の発光面２５からの直射光（発光面２５から放射される光のうち、反射面３０の光の反射方向側に放射される光であって、反射面３０などで配光制御されていない光）Ｌ３の大部分は、シェード部材４の第２シェード部４２により遮蔽される。これにより、配光制御されていない直射光Ｌ３の大部分を車両の前方側に照射するのを確実に防止することができ、良好なロービーム用配光パターンＬＰが得られる。 Further, direct light from the light emitting surface 25 of the light emitting chip 20 (of the light emitted from the light emitting surface 25, the light emitted toward the reflection direction side of the light of the reflecting surface 30, and distributed by the reflecting surface 30 or the like) Most of the uncontrolled light (L3) is shielded by the second shade portion 42 of the shade member 4. As a result, it is possible to reliably prevent most of the direct light L3 not subjected to light distribution control from being irradiated to the front side of the vehicle, and a good low beam light distribution pattern LP can be obtained.
　さらに、反射面３０よりも前方側（反射面３０の光の反射方向側）のカバー部材６０の内面には、ローレット加工が施されている。このために、発光チップ２０の発光面２５からの直射光Ｌ３の一部が反射面３０よりも前方側のカバー部材６０の内面に入射しても、そのカバー部材６０の内面のローレット加工面により、直射光Ｌ３の一部は拡散反射される。これにより、ロービーム用配光パターンＬＰに影響を与えることが無い。 Furthermore, the inner surface of the cover member 60 on the front side of the reflection surface 30 (the light reflection direction side of the reflection surface 30) is knurled. Therefore, even if a part of the direct light L3 from the light emitting surface 25 of the light emitting chip 20 is incident on the inner surface of the cover member 60 on the front side of the reflecting surface 30, the knurled surface on the inner surface of the cover member 60 A part of the direct light L3 is diffusely reflected. This does not affect the low beam light distribution pattern LP.
（実施形態１の効果の説明）
　この実施形態１における車両用前照灯１は、以上のごとき構成および作用からなり、以下、その効果について説明する。 (Description of the effect of Embodiment 1)
The vehicle headlamp 1 according to the first embodiment is configured and operated as described above, and the effects thereof will be described below.
　この実施形態１における車両用前照灯１は、保持部材としてのヒートシンク部材５に設けられているシェードとしての第１シェード部４１により、半導体型光源２の発光面２５からの光のうち、少なくとも反射面３０（特に、中央のセグメント３１）の蒸着溜り部３３に入射する光Ｌ２を遮蔽することができる（図１、図８中の破線矢印を参照）。これにより、蒸着溜り部３３において反射する反射光であって、配光制御されていない反射光の発生を防ぐことができる。この結果、配光パターンこの例ではロービーム用配光パターンＬＰを高精度に配光制御することができるので、良好なロービーム用配光パターンＬＰが得られる。 The vehicle headlamp 1 according to the first embodiment includes at least one of the light from the light emitting surface 25 of the semiconductor-type light source 2 by the first shade portion 41 as a shade provided in the heat sink member 5 as a holding member. The light L2 incident on the vapor deposition reservoir 33 of the reflecting surface 30 (particularly, the central segment 31) can be shielded (see broken line arrows in FIGS. 1 and 8). Thereby, it is possible to prevent generation of reflected light that is reflected by the vapor deposition reservoir 33 and is not subjected to light distribution control. As a result, since the light distribution pattern LP in this example can control the light distribution pattern LP for the low beam with high accuracy, a good light distribution pattern LP for the low beam can be obtained.
　この実施形態１における車両用前照灯１は、第１シェード部４１が、反射面３０のうち、ロービーム用配光パターンＬＰのカットオフライン（斜めカットオフラインＣＬ１、水平カットオフラインＣＬ２のうち少なくともいずれか一方のカットオフライン）および高光度帯ＨＺを配光制御する部分である中央のセグメント３１の蒸着溜り部３３に入射する光Ｌ２を遮蔽する。これにより、ロービーム用配光パターンＬＰの配光制御に大きな影響を与えるカットオフラインおよび高光度帯ＨＺを高精度に配光制御することができる。この結果、良好なロービーム用配光パターンＬＰが得られる。 In the vehicle headlamp 1 according to the first embodiment, the first shade portion 41 has at least one of a cut-off line (an oblique cut-off line CL1 and a horizontal cut-off line CL2) of the light distribution pattern LP for the low beam on the reflection surface 30. One cutoff line) and the light L2 incident on the vapor deposition reservoir 33 of the central segment 31 which is a part for controlling the light distribution in the high luminous intensity zone HZ are shielded. Thereby, it is possible to perform light distribution control with high accuracy on the cut-off line and the high luminous intensity band HZ that have a great influence on the light distribution control of the low-beam light distribution pattern LP. As a result, a good low beam light distribution pattern LP is obtained.
　この実施形態１における車両用前照灯１は、第１シェード部４１の縁４４が、凹曲線をなすので、パラボラ系の反射面３０（特に、中央のセグメント３１）において第１シェード部４１により形成される遮蔽範囲Ｓの境界線が、正面視で直線もしくはほぼ直線となる。このために、直線もしくはほぼ直線をなす遮蔽範囲Ｓの境界線と、直線もしくはほぼ直線をなす蒸着溜り部３３の境界線とは、平行もしくはほぼ平行となる。これにより、第１シェード部４１により形成される遮蔽範囲Ｓをできる限り小さくすることができる。すなわち、反射面３０（特に、中央のセグメント３１）のうち有効反射面を遮蔽する範囲Ｓをできる限り小さくすることができる。その分、反射面３０（特に、中央のセグメント３１）のうち有効反射面の範囲をできる限り大きく維持することができる。この結果、良好なロービーム用配光パターンＬＰが得られる。 In the vehicle headlamp 1 according to the first embodiment, since the edge 44 of the first shade portion 41 forms a concave curve, the parabolic reflection surface 30 (particularly, the central segment 31) causes the first shade portion 41. The boundary line of the formed shielding range S is a straight line or a substantially straight line when viewed from the front. For this reason, the boundary line of the shielding range S that forms a straight line or a substantially straight line and the boundary line of the vapor deposition reservoir 33 that forms a straight line or a substantially straight line are parallel or substantially parallel. Thereby, the shielding range S formed by the 1st shade part 41 can be made as small as possible. That is, the range S that shields the effective reflecting surface of the reflecting surface 30 (particularly, the central segment 31) can be made as small as possible. Accordingly, the range of the effective reflecting surface of the reflecting surface 30 (particularly, the central segment 31) can be maintained as large as possible. As a result, a good low beam light distribution pattern LP is obtained.
　この実施形態１における車両用前照灯１は、シェード部材４の一端部のうち、半導体型光源２、もしくは、半導体型光源２に電気的に接続するコネクタ２４、の少なくともいずれか一方が位置する箇所には、開口部４５が、設けられている。また、リフレクタ３の上端部の中央部（すなわち、中央のセグメント３１の上端部）と、ヒートシンク部材５の水平板部５０との間のうち、コネクタ２４が挿入位置する箇所には、シェード部材４の開口部４５と連なる挿入空間３４が設けられている。この挿入空間３４により、リフレクタ３（特に、中央のセグメント３１）の蒸着溜り部３３は、半導体型光源２の発光面２５よりも下側に位置する。すなわち、蒸着溜り部３３は、発光面２５からの光Ｌ２が到達する位置に位置する。このために、このままでは、発光面２５からの光Ｌ２が蒸着溜り部３３に入射することとなる。ところが、この実施形態１における車両用前照灯１は、第１シェード部４１を設けることにより、蒸着溜り部３３に入射する光Ｌ２を遮蔽することができる。この結果、リフレクタ３の上端部の中央部にシェード部材４の開口部４５と連なる挿入空間３４を設けても、蒸着溜り部３３に入射する光Ｌ２を遮蔽することができるので、良好なロービーム用配光パターンＬＰが得られる。 In the vehicle headlamp 1 according to the first embodiment, at least one of the semiconductor-type light source 2 and the connector 24 that is electrically connected to the semiconductor-type light source 2 among the one end portions of the shade member 4 is located. An opening 45 is provided at the location. The shade member 4 is located at a position where the connector 24 is inserted between the center of the upper end of the reflector 3 (that is, the upper end of the central segment 31) and the horizontal plate 50 of the heat sink member 5. An insertion space 34 that is continuous with the opening 45 is provided. Due to this insertion space 34, the vapor deposition reservoir 33 of the reflector 3 (particularly, the central segment 31) is positioned below the light emitting surface 25 of the semiconductor light source 2. That is, the vapor deposition reservoir 33 is located at a position where the light L2 from the light emitting surface 25 reaches. For this reason, in this state, the light L2 from the light emitting surface 25 enters the vapor deposition reservoir 33. However, the vehicular headlamp 1 according to the first embodiment can shield the light L <b> 2 incident on the vapor deposition reservoir 33 by providing the first shade portion 41. As a result, even if the insertion space 34 connected to the opening 45 of the shade member 4 is provided at the center of the upper end of the reflector 3, the light L2 incident on the vapor deposition reservoir 33 can be shielded. A light distribution pattern LP is obtained.
　この実施形態１における車両用前照灯１は、シェード部材４において、第１シェード部４１と直射光遮蔽シェードとしての第２シェード部４２とが一体構造をなしているので、第１シェード部４１と第２シェード部４２との相対位置が決定される。このために、シェード部材４をヒートシンク部材５にスクリュー４３により固定することにより、第１シェード部４１と第２シェード部４２との相対位置のバラツキが小さい。この結果、ロービーム用配光パターンＬＰを高精度に配光制御することができるので、良好なロービーム用配光パターンＬＰが得られる。しかも、第１シェード部４１と第２シェード部４２との位置決め構造や固定構造を兼用することができるので、その分、部品点数や組付工程数を軽減することができ、その結果、製造コストを安価にすることができる。 In the vehicle headlamp 1 according to the first embodiment, in the shade member 4, the first shade portion 41 and the second shade portion 42 as a direct light shielding shade have an integral structure. And the relative position of the second shade portion 42 are determined. For this reason, by fixing the shade member 4 to the heat sink member 5 with the screw 43, the relative position variation between the first shade portion 41 and the second shade portion 42 is small. As a result, since the light distribution pattern LP for low beam can be controlled with high accuracy, a good light distribution pattern LP for low beam can be obtained. In addition, since the positioning structure and the fixing structure of the first shade portion 41 and the second shade portion 42 can be shared, the number of parts and the number of assembly steps can be reduced correspondingly, resulting in the manufacturing cost. Can be made cheaper.
（実施形態２の構成の説明）
　図１１、図１２は、この発明にかかる車両用前照灯の実施形態２を示す。以下、この実施形態２における車両用前照灯の構成について説明する。図中、図１～図１０と同符号は、同一のものを示す。 (Description of Configuration of Embodiment 2)
11 and 12 show Embodiment 2 of a vehicle headlamp according to the present invention. Hereinafter, the configuration of the vehicle headlamp according to the second embodiment will be described. In the figure, the same reference numerals as those in FIGS. 1 to 10 denote the same components.
　前記の実施形態１の車両用前照灯１は、シェード部材４に第１シェード部４１を設けたものである。これに対して、この実施形態２における車両用前照灯１００は、ヒートシンク部材５に第１シェード部５４を一体に設けたものである。この第１シェード部５４の平面視形状が、図１２に示すように、パラボラ系のリフレクタ３に倣ったパラボラ形状をなす。このために、第１シェード部５４の縁を凹曲線ではなく直線としても、反射面３０に形成される遮蔽範囲の境界線を直線とすることができる。 The vehicle headlamp 1 according to the first embodiment includes the shade member 4 provided with the first shade portion 41. On the other hand, in the vehicle headlamp 100 according to the second embodiment, the first shade portion 54 is integrally provided on the heat sink member 5. The planar view shape of the first shade portion 54 forms a parabolic shape following the parabolic reflector 3 as shown in FIG. For this reason, even if the edge of the 1st shade part 54 is made into a straight line instead of a concave curve, the boundary line of the shielding range formed in the reflective surface 30 can be made into a straight line.
　この実施形態２において、シェード部材４は、前記の実施形態１のシェード部材４の取付部４０の一端部の折曲端部をカットしたものである。また、半導体型光源２のコネクタ２４の接続方向が、リフレクタ３の光の反射方向に対してほぼ直交する。このために、前記第１シェード部５４には、開口部を設ける必要がない。 In the second embodiment, the shade member 4 is obtained by cutting a bent end portion of one end portion of the attachment portion 40 of the shade member 4 of the first embodiment. Further, the connection direction of the connector 24 of the semiconductor light source 2 is substantially orthogonal to the light reflection direction of the reflector 3. For this reason, it is not necessary to provide an opening in the first shade portion 54.
（実施形態２の作用、効果の説明）
　この実施形態２における車両用前照灯１００は、以上のごとき構成からなるので、前記の実施形態１の車両用前照灯１とほぼ同様の作用効果を達成することができる。 (Explanation of action and effect of embodiment 2)
Since the vehicle headlamp 100 according to the second embodiment is configured as described above, it is possible to achieve substantially the same operational effects as the vehicle headlamp 1 of the first embodiment.
（実施形態１、２以外の例の説明）
　この実施形態１、２においては、車両が左側通行の場合の車両用前照灯１、１００について説明するものである。ところが、この発明においては、車両が右側通行の場合の車両用前照灯にも適用することができる。右側通行の場合の車両用前照灯においては、図１０のロービーム用配光パターンＬＰの斜めカットオフラインＣＬ１と水平カットオフラインＣＬ２と高光度帯ＨＺとが左右反転（左右対称）となる。 (Description of examples other than Embodiments 1 and 2)
In the first and second embodiments, the vehicle headlamps 1 and 100 when the vehicle is on the left side will be described. However, the present invention can also be applied to a vehicle headlamp when the vehicle is on the right side. In the vehicle headlamp in the case of right-hand traffic, the oblique cut-off line CL1, the horizontal cut-off line CL2, and the high luminous intensity zone HZ of the low-beam light distribution pattern LP in FIG.
　また、この実施形態１、２においては、リフレクタ３の反射面３０（中央のセグメント３１、左右両側のセグメント３２）により、配光パターンを配光制御するものである。ところが、この発明においては、リフレクタの反射面で配光パターンの一次の配光制御を行い、レンズにより配光パターンの二次の配光制御を行って、所定の配光パターンを形成するものであっても良い。 In the first and second embodiments, the light distribution pattern is controlled by the reflecting surface 30 (the central segment 31 and the left and right segments 32) of the reflector 3. However, in the present invention, the primary light distribution control of the light distribution pattern is performed on the reflecting surface of the reflector, and the secondary light distribution control of the light distribution pattern is performed by the lens to form a predetermined light distribution pattern. There may be.
　さらに、この実施形態１、２においては、配光パターンとしてロービーム用配光パターンＬＰである。ところが、この発明においては、配光パターンとしてロービーム用配光パターンＬＰ以外の配光パターン、たとえば、フォグランプ用配光パターンなどであっても良い。 Furthermore, in the first and second embodiments, the light distribution pattern is a low beam light distribution pattern LP. However, in the present invention, the light distribution pattern may be a light distribution pattern other than the low beam light distribution pattern LP, such as a fog lamp light distribution pattern.
　さらに、この実施形態１、２においては、少なくとも反射面３０の発光面２５側の端部に、蒸着溜り部３３がある場合について説明するものである。ところが、この発明においては、少なくとも反射面３０の発光面２５側の端部に、蒸着溜り部３３以外のもの、たとえば、角の湾曲面、バリなどがある場合であっても、良好な配光パターンが得られる。 Furthermore, in the first and second embodiments, the case where the vapor deposition reservoir 33 is present at least at the end of the reflecting surface 30 on the light emitting surface 25 side will be described. However, in the present invention, even if there is something other than the vapor deposition reservoir 33, for example, a curved surface of a corner, a burr, etc. at least at the end of the reflecting surface 30 on the light emitting surface 25 side, a good light distribution is achieved. A pattern is obtained.
　さらにまた、この実施形態１においては、半導体型光源２のコネクタ２４の接続方向がリフレクタ３の光の反射方向とほぼ平行である。ところが、この発明においては、実施形態２のように、半導体型光源２のコネクタ２４の接続方向がリフレクタ３の光の反射方向に対してほぼ直交するものであっても良い。この場合においては、第１シェード部４１に開口部４５を設ける必要がない。 Furthermore, in the first embodiment, the connection direction of the connector 24 of the semiconductor light source 2 is substantially parallel to the light reflection direction of the reflector 3. However, in the present invention, as in the second embodiment, the connection direction of the connector 24 of the semiconductor light source 2 may be substantially orthogonal to the light reflection direction of the reflector 3. In this case, it is not necessary to provide the opening 45 in the first shade portion 41.
　さらにまた、この実施形態２においては、半導体型光源２のコネクタ２４の接続方向がリフレクタ３の光の反射方向に対してほぼ直交するものである。ところが、この発明においては、実施形態１のように、半導体型光源２のコネクタ２４の接続方向がリフレクタ３の光の反射方向とほぼ平行であっても良い。この場合においては、第１シェード部５４に開口部を設ける必要がある。 Furthermore, in the second embodiment, the connection direction of the connector 24 of the semiconductor light source 2 is substantially orthogonal to the light reflection direction of the reflector 3. However, in the present invention, as in the first embodiment, the connection direction of the connector 24 of the semiconductor light source 2 may be substantially parallel to the light reflection direction of the reflector 3. In this case, it is necessary to provide an opening in the first shade portion 54.
　１、１００　車両用前照灯
　１０　光軸調整機構
　２　半導体型光源
　２０　発光チップ
　２１　基板
　２２　端子
　２３　スクリュー
　２４　コネクタ
　２５　発光面
　３　リフレクタ
　３０　反射面
　３１　中央のセグメント
　３２　左右両側のセグメント
　３３　蒸着溜り部
　３４　挿入空間
　４　シェード部材
　４０　取付部
　４１、４１０　第１シェード部
　４２　第２シェード部
　４３　スクリュー
　４４、４４０　縁
　４５　開口部
　４６　空所
　５　ヒートシンク部材
　５０　水平板部
　５１　フィン部
　５４　第１シェード部
　６　ブラケット部材
　６０　カバー部材
　ＬＰ　ロービーム用配光パターン
　ＣＬ１　斜めカットオフライン
　ＣＬ２　水平カットオフライン
　Ｅ　エルボー点
　ＨＺ　高光度帯
　ＨＬ－ＨＲ　スクリーンの左右の水平線
　ＶＵ－ＶＤ　スクリーンの上下の垂直線
　Ｌ１　光（反射面に入射する光）
　Ｌ２　光（蒸着溜り部に入射しようとする光）
　Ｌ３　直射光
  DESCRIPTION OF SYMBOLS 1,100 Vehicle headlamp 10 Optical axis adjustment mechanism 2 Semiconductor type light source 20 Light emitting chip 21 Substrate 22 Terminal 23 Screw 24 Connector 25 Light emitting surface 3 Reflector 30 Reflecting surface 31 Central segment 32 Left and right both side segments 33 Deposition reservoir 34 Insertion space 4 Shade member 40 Mounting portion 41, 410 First shade portion 42 Second shade portion 43 Screw 44, 440 Edge 45 Opening portion 46 Space 5 Heat sink member 50 Horizontal flat plate portion 51 Fin portion 54 First shade portion 6 Bracket member 60 Cover member LP Light distribution pattern for low beam CL1 Oblique cut-off line CL2 Horizontal cut-off line E Elbow point HZ High brightness zone HL-HR Horizontal line on the screen VU-VD Vertical line on the screen L1 Light (light incident on the reflective surface) )
L2 light (light entering the deposition reservoir)
L3 direct light

Claims (6)

  1. 　発光面を有する半導体型光源と、
    　前記発光面からの光を反射させる反射面を有するリフレクタと、
    　前記半導体型光源および前記リフレクタを保持する保持部材と、
    　を備え、
    　前記保持部材には、前記発光面からの光のうち、少なくとも前記反射面の前記発光面側の端部に入射する光を遮蔽するシェードが、設けられている、
    　ことを特徴とする車両用前照灯。     A semiconductor-type light source having a light emitting surface;
    A reflector having a reflecting surface for reflecting light from the light emitting surface;
    A holding member for holding the semiconductor light source and the reflector;
    With
    The holding member is provided with a shade that shields at least light incident on the light emitting surface side end portion of the reflecting surface from among the light from the light emitting surface.
    A vehicle headlamp characterized by that.
  2. 　前記反射面は、カットオフラインおよび高光度帯を有する配光パターンを配光制御し、
    　前記シェードは、前記反射面のうち、前記配光パターンの前記カットオフラインおよび前記高光度帯を配光制御する部分の前記発光面側の端部に入射する光を遮蔽する、
    　ことを特徴とする請求項１に記載の車両用前照灯。     The reflective surface controls light distribution of a light distribution pattern having a cut-off line and a high luminous intensity zone,
    The shade shields light incident on an end portion on the light emitting surface side of a portion of the reflective surface that controls light distribution of the cut-off line and the high luminous intensity band of the light distribution pattern.
    The vehicle headlamp according to claim 1.
  3. 　前記反射面は、パラボラ系の反射面からなり、
    　前記シェードの縁は、凹曲線をなす、
    　ことを特徴とする請求項１または２に記載の車両用前照灯。     The reflective surface comprises a parabolic reflective surface,
    The edge of the shade forms a concave curve;
    The vehicle headlamp according to claim 1 or 2, characterized in that
  4. 　前記シェードのうち、前記半導体型光源、もしくは、前記半導体型光源に電気的に接続するコネクタ、の少なくともいずれか一方が位置する箇所には、開口部が、設けられていて、
    　前記リフレクタと、前記保持部材との間のうち、前記コネクタが挿入位置する箇所には、前記開口部と連なる挿入空間が設けられている、
    　ことを特徴とする請求項１～３のいずれか１項に記載の車両用前照灯。     In the shade, at least one of the semiconductor-type light source or the connector that is electrically connected to the semiconductor-type light source is provided with an opening,
    Of the space between the reflector and the holding member, an insertion space that is continuous with the opening is provided at a position where the connector is inserted.
    The vehicle headlamp according to any one of claims 1 to 3, characterized in that:
  5. 　前記発光面を挟んで前記シェードと反対側に配置されている直射光遮蔽シェードを備え、
    　前記シェードと前記直射光遮蔽シェードとは、一体構造をなし、前記保持部材に固定されている、
    　ことを特徴とする請求項１～４のいずれか１項に記載の車両用前照灯。     A direct light shielding shade disposed on the opposite side of the shade across the light emitting surface,
    The shade and the direct light shielding shade have an integral structure and are fixed to the holding member.
    The vehicle headlamp according to any one of claims 1 to 4, characterized in that:
  6. 　前記シェードは、前記保持部材に一体に設けられている、
    　ことを特徴とする請求項１～４のいずれか１項に記載の車両用前照灯。
          The shade is provided integrally with the holding member.
    The vehicle headlamp according to any one of claims 1 to 4, characterized in that:
PCT/JP2013/079779 2012-11-22 2013-11-01 Vehicle headlight WO2014080747A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012256726A JP6070105B2 (en) 2012-11-22 2012-11-22 Vehicle headlamp
JP2012-256726 2012-11-22

Publications (1)

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WO2014080747A1 true WO2014080747A1 (en) 2014-05-30

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EP2921772A1 (en) * 2014-03-21 2015-09-23 Valeo Iluminacion, Light module of a motor vehicle
WO2017191044A1 (en) * 2016-05-03 2017-11-09 Hella Kgaa Hueck & Co. Led lighting module for a headlight for generating a high beam and a low beam
CN109282234A (en) * 2018-10-15 2019-01-29 华域视觉科技(上海)有限公司 A kind of automobile dipped headlight projecting unit and its car light
EP3719390A1 (en) * 2019-03-29 2020-10-07 Ichikoh Industries, Ltd. Vehicle headlamp

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JP6545975B2 (en) * 2015-02-24 2019-07-17 株式会社小糸製作所 Vehicle lamp
US10578267B2 (en) * 2016-10-26 2020-03-03 North American Lighting, Inc. Vehicle lamp light assembly
CN106885198B (en) * 2017-03-14 2023-09-26 华域视觉科技(上海)有限公司 Front fog lamp module integrating functions of corner lamp and fog lamp

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JP2011238511A (en) * 2010-05-12 2011-11-24 Koito Mfg Co Ltd Lamp fitting
JP2012216348A (en) * 2011-03-31 2012-11-08 Ichikoh Ind Ltd Vehicular lamp fitting
JP2012227165A (en) * 2012-07-26 2012-11-15 Ichikoh Ind Ltd Headlight for vehicle

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JP2011238511A (en) * 2010-05-12 2011-11-24 Koito Mfg Co Ltd Lamp fitting
JP2012216348A (en) * 2011-03-31 2012-11-08 Ichikoh Ind Ltd Vehicular lamp fitting
JP2012227165A (en) * 2012-07-26 2012-11-15 Ichikoh Ind Ltd Headlight for vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2921772A1 (en) * 2014-03-21 2015-09-23 Valeo Iluminacion, Light module of a motor vehicle
FR3022010A1 (en) * 2014-03-21 2015-12-11 Valeo Iluminacion Sa LUMINOUS MODULE OF A MOTOR VEHICLE
US9671078B2 (en) 2014-03-21 2017-06-06 Valeo Iluminacion Lighting unit for a motor vehicle
WO2017191044A1 (en) * 2016-05-03 2017-11-09 Hella Kgaa Hueck & Co. Led lighting module for a headlight for generating a high beam and a low beam
CN109282234A (en) * 2018-10-15 2019-01-29 华域视觉科技(上海)有限公司 A kind of automobile dipped headlight projecting unit and its car light
EP3719390A1 (en) * 2019-03-29 2020-10-07 Ichikoh Industries, Ltd. Vehicle headlamp

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