WO2014080747A1 - Phare de véhicule - Google Patents

Phare de véhicule 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
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WO
WIPO (PCT)
Prior art keywords
light
shade
light emitting
reflector
semiconductor
Prior art date
Application number
PCT/JP2013/079779
Other languages
English (en)
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/fr

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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

Avec les phares de véhicule classiques, un motif de répartition de lumière favorable ne peut pas être obtenu. À cet effet, la présente invention porte sur une source de lumière du type à semi-conducteurs (2), sur un réflecteur (3), sur un élément d'abat-jour (4) et sur un élément de dissipateur de chaleur (5). Une surface de réflexion (30) du réflecteur (3) est formée par déposition en phase vapeur. Une section d'accumulation de déposition en phase vapeur (33) est formée, au moment de la déposition en phase vapeur, à un bord de la surface de réflexion (30) au niveau du côté de surface d'émission de lumière (25) de la source de lumière du type à semi-conducteurs (2). L'élément de dissipateur de chaleur (5) comporte une première partie d'abat-jour (41) pour ombrer, parmi la lumière venant de la surface d'émission de lumière (25) de la source de lumière du type à semi-conducteurs (2), au moins la lumière (L2) incidente sur la section d'accumulation de déposition en phase vapeur (33). Par cette invention, un motif de répartition de lumière favorable (LP) pour des faisceaux bas peut être obtenu.
PCT/JP2013/079779 2012-11-22 2013-11-01 Phare de véhicule WO2014080747A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012256726A JP6070105B2 (ja) 2012-11-22 2012-11-22 車両用前照灯
JP2012-256726 2012-11-22

Publications (1)

Publication Number Publication Date
WO2014080747A1 true WO2014080747A1 (fr) 2014-05-30

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JP (1) JP6070105B2 (fr)
WO (1) WO2014080747A1 (fr)

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EP2921772A1 (fr) * 2014-03-21 2015-09-23 Valeo Iluminacion, Module lumineux d'un vehicule automobile
WO2017191044A1 (fr) * 2016-05-03 2017-11-09 Hella Kgaa Hueck & Co. Module d'éclairage à del pour phare destiné à produire un faisceau de route et un faisceau de croisement
CN109282234A (zh) * 2018-10-15 2019-01-29 华域视觉科技(上海)有限公司 一种汽车近光灯用投射单元及其车灯
EP3719390A1 (fr) * 2019-03-29 2020-10-07 Ichikoh Industries, Ltd. Phare de véhicule

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JP6545975B2 (ja) * 2015-02-24 2019-07-17 株式会社小糸製作所 車輌用灯具
US10578267B2 (en) * 2016-10-26 2020-03-03 North American Lighting, Inc. Vehicle lamp light assembly
CN106885198B (zh) * 2017-03-14 2023-09-26 华域视觉科技(上海)有限公司 集角灯和雾灯功能于一体的前雾灯模组

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JP2011238511A (ja) * 2010-05-12 2011-11-24 Koito Mfg Co Ltd 灯具
JP2012216348A (ja) * 2011-03-31 2012-11-08 Ichikoh Ind Ltd 車両用灯具
JP2012227165A (ja) * 2012-07-26 2012-11-15 Ichikoh Ind Ltd 車両用前照灯

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JP2011238511A (ja) * 2010-05-12 2011-11-24 Koito Mfg Co Ltd 灯具
JP2012216348A (ja) * 2011-03-31 2012-11-08 Ichikoh Ind Ltd 車両用灯具
JP2012227165A (ja) * 2012-07-26 2012-11-15 Ichikoh Ind Ltd 車両用前照灯

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2921772A1 (fr) * 2014-03-21 2015-09-23 Valeo Iluminacion, Module lumineux d'un vehicule automobile
FR3022010A1 (fr) * 2014-03-21 2015-12-11 Valeo Iluminacion Sa Module lumineux d'un vehicule automobile
US9671078B2 (en) 2014-03-21 2017-06-06 Valeo Iluminacion Lighting unit for a motor vehicle
WO2017191044A1 (fr) * 2016-05-03 2017-11-09 Hella Kgaa Hueck & Co. Module d'éclairage à del pour phare destiné à produire un faisceau de route et un faisceau de croisement
CN109282234A (zh) * 2018-10-15 2019-01-29 华域视觉科技(上海)有限公司 一种汽车近光灯用投射单元及其车灯
EP3719390A1 (fr) * 2019-03-29 2020-10-07 Ichikoh Industries, Ltd. Phare de véhicule

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