WO2021039826A1 - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
WO2021039826A1
WO2021039826A1 PCT/JP2020/032133 JP2020032133W WO2021039826A1 WO 2021039826 A1 WO2021039826 A1 WO 2021039826A1 JP 2020032133 W JP2020032133 W JP 2020032133W WO 2021039826 A1 WO2021039826 A1 WO 2021039826A1
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WO
WIPO (PCT)
Prior art keywords
reflector
holder
depth direction
vehicle
vehicle lamp
Prior art date
Application number
PCT/JP2020/032133
Other languages
French (fr)
Japanese (ja)
Inventor
望月　美希
恭平 田中
Original Assignee
株式会社小糸製作所
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 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Priority to JP2021542957A priority Critical patent/JP7414832B2/en
Publication of WO2021039826A1 publication Critical patent/WO2021039826A1/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
    • F21S41/10—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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices

Definitions

  • the present invention relates to a vehicle lamp.
  • Some vehicle headlights which are vehicle lighting fixtures, are provided with a reflector that emits light emitted from a light source forward and a holder that holds the reflector.
  • Patent Document 1 describes an example of such a vehicle headlight.
  • a rib extending rearward provided on the back surface of the reflector and a recessed portion provided in the holder are fitted, and the fitting portion is screwed with a screw. By doing so, the reflector and the holder are fixed.
  • an object of the present invention is to provide a vehicle lamp that can suppress the rattling of the reflector.
  • the vehicle lamp of the present invention includes a tubular holder extending in the depth direction and having an opening formed on one side in the depth direction, a light source housed in the holder, and a light source.
  • a pair of reflectors housed in the holder and reflecting light emitted from the light source toward the opening, and the outer wall of the reflectors are recessed from positions facing each other toward the inside of the reflectors.
  • the recessed portion is formed along the depth direction, and the holder is provided with a pair of convex portions that protrude toward the inside of the holder from positions facing each other and extend in the depth direction.
  • the convex portion is characterized in that it fits into the recessed portion over the entire length of the recessed portion in the depth direction.
  • a pair of recesses extending toward the inside of the reflector from the positions facing each other are formed in the reflector, and the holder is formed from the positions facing each other toward the inside of the holder.
  • a pair of protruding protrusions is provided. Each of these protrusions fits into each of the pair of recesses. Further, both the recessed portion and the convex portion extend in the depth direction, and the convex portion fits into the recessed portion over the entire length in the depth direction of the recessed portion. Therefore, even if the reflector tries to vibrate with respect to the holder while the vehicle is running, the vibration of the reflector with respect to the holder can be suppressed by the convex portion fitted in the recessed portion.
  • the fitting structure of the recessed portion and the convex portion as described above is configured at a position facing each other, the reflector will rotate with respect to the holder due to vibration due to the running of the vehicle or the like. Even so, this rotation can be suppressed by the pair of fitting structures. Therefore, according to this vehicle lamp, rattling of the reflector can be suppressed.
  • the recessed portion is formed on the outer wall of the reflector. Therefore, if the reflector is assembled to the holder while the convex portion of the holder is inserted into the recessed portion, the convex portion serves as a guide and the assembly accuracy can be improved. By improving the assembly accuracy in this way, for example, the light distribution performance can be improved.
  • the recessed portion extends to the end portion of the reflector on the opening side.
  • the recessed portion and the convex portion extend in the left-right direction perpendicular to the depth direction.
  • the recessed portion and the convex portion may be formed so as to become narrower toward the inside of the reflector.
  • the concave portion and the convex portion so as to become narrower toward the inside of the reflector in this way, when the reflector tries to rotate with respect to the holder, the concave portion of the reflector has a wide range over the convex portion of the holder. Can be contacted at. Therefore, rattling due to rotation of the reflector can be suppressed more effectively.
  • the reflector may have a circular outer shape excluding the recessed portion when viewed from the opening side.
  • the reflector When the reflector has a circular outer shape in the front view, it tends to rotate more easily with respect to the holder than in the case where the reflector has a non-circular shape in the front view.
  • the reflector has a non-circular shape in the front view.
  • rattling of the reflector can be effectively suppressed even when the reflector is formed in a circular shape.
  • the inner wall of the reflector includes a protruding inner wall corresponding to the recessed portion, and a connecting portion for connecting the protruding inner walls may be arranged between the pair of the protruding inner walls.
  • the connecting portion is formed so that the width in the direction perpendicular to the direction in which the connecting portion connects the protruding inner walls becomes narrower toward the opening side. You may.
  • the vehicle lamp when the protruding inner walls are connected to each other by a connecting portion, the vehicle lamp further includes a circuit board for supplying electric power to the light source, and an internal space is formed inside the connecting portion to form the circuit board. A part may be arranged in the internal space.
  • the vehicle lighting equipment When the vehicle lighting equipment includes a circuit board, the vehicle lighting equipment further includes a heat radiating plate to which the circuit board is fixed, and a part of the heat radiating plate is arranged in the internal space and is provided in the internal space.
  • the extending length of the heat radiating plate along the depth direction in the above may be longer than the extending length of the circuit board along the depth direction in the internal space.
  • the area of the heat radiating plate can be expanded inside the vehicle lamp, and the heat radiating efficiency of the heat generated from the light source can be improved.
  • FIG. 3 is a vertical cross-sectional view taken along the line AA shown in FIG.
  • FIG. 3 is a vertical cross-sectional view taken along the line BB shown in FIG. It is a figure which shows the light distribution pattern of a low beam. It is a figure which shows the light distribution pattern of a high beam.
  • the vehicle lighting fixture according to the present embodiment is, for example, a vehicle headlight that can be mounted on a two-wheeled vehicle.
  • FIG. 1 is an exploded perspective view showing the vehicle headlight 1 of the present embodiment
  • FIG. 2 is a front perspective view showing the vehicle headlight 1.
  • the vehicle headlight 1 of the present embodiment is a parabolic lamp.
  • the vehicle headlight 1 has a substantially cylindrical outer shape, and includes a front cover 10, a reflector 20, a holder 40, and a light source unit 50 as main configurations.
  • the front cover 10 is not shown.
  • the front cover 10 is made of, for example, a transparent resin, and includes a cylindrical portion 11 extending in the front-rear direction and a circular lid portion 12 that closes the front end of the cylindrical portion 11.
  • the front-rear direction can be considered as the depth direction of the vehicle headlight.
  • the reflector 20 is a member that reflects light emitted from a light source, which will be described later, forward.
  • the reflector 20 may be made of resin and integrally molded.
  • the reflector 20 has a hollow substantially dome-shaped outer shape, and is formed so as to be substantially circular except for a recessed portion described later when viewed from the front. More specifically, a circular opening 20FO is formed at the front end of the reflector 20, and the reflector 20 has a shape that projects rearward from the front end. That is, the reflector 20 includes a substantially cylindrical cylindrical portion 22 located in front of the reflector 20 and a dome portion 29 located behind the cylindrical portion 22 and connected to the cylindrical portion 22. The dome portion 29 is formed so that the diameter gradually decreases from the front to the rear, and the diameter of the front end of the dome portion 29 is substantially the same as the diameter of the cylindrical portion 22.
  • the outer wall 20B of the reflector 20 is formed with a pair of recesses that are recessed from positions facing each other toward the inside of the reflector 20. That is, the outer wall 20B of the reflector 20 has a right recess 24 that is recessed from the right end of the reflector 20 toward the inside of the reflector 20, and a left recess 26 that is recessed from the left end of the reflector 20 toward the inside of the reflector 20. And are formed.
  • the inner wall of the reflector 20 includes the protruding inner walls 25 and 27 corresponding to the right recess 24 and the left recess 26.
  • FIG. 3 is a cross-sectional view of the vehicle headlight 1 cut at the center in the vertical direction
  • FIG. 4 is a vertical cross-sectional view taken along the line AA shown in FIG.
  • the vertical direction is a direction perpendicular to the front-rear direction and the left-right direction.
  • each of the protruding inner walls 25 and 27 extends in the front-rear direction, and in the present embodiment, extends to the opening 20FO which is the front end of the reflector 20. That is, the right recessed portion 24 corresponding to the protruding inner wall 25 and the left recessed portion 26 corresponding to the protruding inner wall 27 extend in the front-rear direction to the opening 20FO, respectively.
  • each of the protruding inner walls 25 and 27 is formed in a substantially V shape inclining toward the inside of the reflector 20, in other words, the reflector. It is formed so as to become narrower toward the inside of 20. That is, each of the right recessed portion 24 and the left recessed portion 26 is formed so as to become narrower toward the inside of the reflector 20.
  • each of the protruding inner walls 25 and 27 and the portion on the center side of the reflector 20 are inclined portions 25T and 27T that are inclined so as to be closer to the center of the reflector 20 from the front to the rear. That is, the inclined portions 25T and 27T are inclined so as to be closer to the center of the reflector 20 from the opening 20FO side in the depth direction toward the side opposite to the opening 20FO side.
  • the strength of the protruding inner walls 25 and 27 is stronger than that in the case where the front end and the central side portion of the protruding inner walls 25 and 27 are cornered. Can be strengthened.
  • FIG. 5 is a vertical cross-sectional view taken along the line BB shown in FIG. 3, which is a vertical cross-sectional view of the vehicle headlight 1 cut at the center in the left-right direction.
  • the reflector 20 is divided into an upper region and a lower region with the protruding inner walls 25 and 27 and the connecting portion 28 as boundaries.
  • a predetermined metal is vapor-deposited on the front surface of the reflector 20 in the upper region, and the front surface is the first reflecting surface 21L. Further, a predetermined metal is also deposited on the front surface of the reflector 20 in the lower region, and the front surface is the second reflecting surface 21H. Both the first reflecting surface 21L and the second reflecting surface are formed over the dome portion 29 and the cylindrical portion 22, and have a substantially semi-parabolic outer shape in the vertical cross-sectional views of FIGS. 4 and 5.
  • the first reflecting surface 21L reflects the light emitted from the light source described later toward the front, that is, toward the opening 20FO, and changes the light distribution pattern of the reflected light into a low beam light distribution pattern.
  • the second reflecting surface 21H reflects the light emitted from the light source described later toward the front, that is, toward the opening 20FO, and changes the reflected light into a high beam light distribution pattern.
  • the holder 40 has a hollow, substantially cylindrical outer shape, and extends in the front-rear direction, which is the depth direction.
  • An opening 40FO is formed on the front side, which is one side of the holder 40, and the rear end, which is the other side, is closed by the rear wall 42B except for a part.
  • the holder 40 is formed to have a size larger than that of the reflector 20, and the reflector 20, the light source unit 50, and the like are housed and held inside the holder 40.
  • the holder 40 includes a large diameter portion 41 located in the front, a small diameter portion 42 located in the rear and having a diameter smaller than that of the large diameter portion 41, and a connecting portion 43 connecting the large diameter portion 41 and the small diameter portion 42.
  • the holder 40 is provided with a pair of convex portions protruding inward of the holder 40 from positions facing each other. That is, the holder 40 is provided with a right convex portion 44 projecting from the right end portion of the holder 40 toward the inside of the holder 40, and a left convex portion 46 projecting from the left end portion of the holder 40 toward the inside of the holder 40.
  • the right convex portion 44 is formed to have substantially the same outer shape as the right recess portion 24 of the reflector 20 and slightly smaller in size than the right recess portion 24 in front view.
  • the left convex portion 46 is formed to have substantially the same outer shape as the left recessed portion 26 of the reflector 20 and slightly smaller in size than the left recessed portion 26 in front view.
  • the right convex portion 44 and the left convex portion 46 may be integrally molded with the main body portion, or may be separately attached to the main body portion as a separate body from the main body portion.
  • Each of the right convex portion 44 and the left convex portion 46 extends forward from the rear wall 42B of the holder 40, and in the present embodiment, extends from the rear wall 42B to the opening 40FO of the holder 40. ..
  • Each of the right convex portion 44 and the left convex portion 46 is connected to the small diameter portion 42 and the connecting portion 43, while being separated from the large diameter portion 41. That is, a gap G is formed between the large diameter portion 41 and the right convex portion 44, and between the large diameter portion 41 and the left convex portion 46, respectively.
  • the protruding lengths of the right convex portion 44 and the left convex portion 46 in the left-right direction are approximately 25% of the diameter of the holder 40. More specifically, the protruding length of each of the front portions of the convex portions 44 and 46 is approximately 25% of the diameter of the large diameter portion 41, and the protruding length of the rear portion is that of the diameter of the small diameter portion 42. The length is approximately 25%, and the protruding length of the intermediate portion is approximately 25% of the diameter of the connecting portion 43.
  • each of the right convex portion 44 and the left convex portion 46 is formed in a substantially V shape inclining toward the inside of the holder 40, in other words. Then, it is formed so as to become narrower toward the inside of the holder 40.
  • the large diameter portion 41 of the holder 40, the cylindrical portion 11 of the front cover 10, and the cylindrical portion 22 of the reflector 20 the large diameter portion 41, the cylindrical portion 11, and the cylindrical portion 22
  • the diameter is smaller in this order. Therefore, in the assembled state in which the holder 40, the front cover 10 and the reflector 20 are assembled, the front cover 10 is located between the large diameter portion 41 of the holder 40 located on the outside and the cylindrical portion 22 of the reflector 20 located on the inside.
  • the cylindrical portion 11 is arranged. Further, the cylindrical portion 11 of the front cover 10 is fitted into the gap G between the large diameter portion 41 and the convex portions 44 and 46 of the holder 40 described above.
  • the reflector 20 is inserted into the holder 40 while the convex portions 44 and 46 of the holder are inserted through the recesses 24 and 26.
  • the convex portions 44 and 46 serve as guides, and the reflector 20 and the holder 40 can be assembled with high accuracy. In this way, the reflector 20 is accommodated and fitted inside the holder 40.
  • the convex portions 44 and 46 are formed to have substantially the same outer shape as the recessed portions 24 and 26 and slightly smaller in size than the recessed portions 24 and 26 in the front view. Further, as described above, since the convex portions 44 and 46 are formed from the rear wall 42B of the holder 40 having a size larger than that of the reflector 20 to the opening at the front end, the lengths of the convex portions 44 and 46 in the front-rear direction are formed. The length is longer than the length of the recesses 24, 26 formed in the reflector 20 in the front-rear direction. Therefore, in the assembled state, the convex portions 44, 46 fit into the recessed portions 24, 26 over the entire length of the recessed portions 24, 26 in the front-rear direction.
  • the position of the front end of the reflector 20 and the position of the front end of the holder 40 substantially coincide with each other in this assembled state. That is, the position of the reflector 20 in the front-rear direction of the opening 20FO and the position of the holder 40 in the front-rear direction of the opening 40FO are substantially the same.
  • the light source unit 50 includes a first light source 51, a second light source 52, a first circuit board 53, a second circuit board 54, and a heat dissipation plate 55.
  • the heat radiating plate 55 is made of, for example, a metal such as aluminum having excellent thermal conductivity.
  • the heat radiating plate 55 is formed in a substantially L shape, and includes a first portion 55A extending in the front-rear direction and a second portion 55B extending in the vertical direction. A notch 55V is formed at the boundary between the first portion 55A and the second portion 55B.
  • the first portion 55A of the heat radiating plate 55 extends from the vicinity of the front end in the internal space 28S of the connecting portion 28 of the reflector 20 to the vicinity of the rear wall 42B of the holder 40 through the through hole 29V of the reflector 20. Therefore, the second portion 55B extends substantially parallel to the rear wall 42B at a position adjacent to the rear wall 42B of the holder 40.
  • screw holes (not shown) communicating with each other are formed at predetermined positions in the second portion 55B and the rear wall 42B, respectively, and the heat radiating plate 55 and the heat radiating plate 55 are formed through the screws inserted into the screw holes.
  • the holder 40 and the holder 40 are fixed to each other.
  • the first circuit board 53 is fixed on the upper surface of the first portion 55A. A part of the first circuit board 53 extends in the internal space 28S of the connecting portion 28. Specifically, the first circuit board 53 extends from the vicinity of the rear end in the internal space 28S of the connecting portion 28 to the vicinity of the rear end of the first portion 55A through the through hole 29V. That is, in the present embodiment, the extending length of the heat radiating plate 55 in the internal space 28S along the front-rear direction is longer than the extending length of the first circuit board 53 in the internal space 28S along the front-rear direction.
  • the first light source 51 is arranged on the upper surface of the first circuit board 53, and is connected to the circuit formed on the first circuit board 53.
  • the first reflecting surface 21L of the reflector 20 is arranged above the first light source 51.
  • the wiring (not shown) connected to this circuit is led out to the outside of the vehicle headlight 1 through the notch 55V of the heat radiating plate 55 and the through hole 42V of the rear wall 42B of the holder 40. .. Therefore, power is supplied to the first light source 51 through this wiring and the circuit of the first circuit board 53.
  • the first light source 51 which has been supplied with electric power, emits light LL upward.
  • the first reflecting surface 21L is arranged above the first light source 51. Further, as described above, the first reflecting surface 21L reflects light forward, that is, toward the opening 40FO of the holder 40 and the opening 20FO of the reflector 20, and arranges the light distribution pattern of the reflected light as a low beam. It is formed so as to change into an optical pattern. Therefore, the light LL is emitted in front of the vehicle headlight 1 so as to have a low beam light distribution pattern PL as shown in FIG. 6, for example.
  • the light distribution pattern PL is indicated by a thick line, and the straight line S indicates a horizontal line.
  • the region PLA1 is a region having the highest light intensity, and the light intensity decreases in the order of the region PLA2 and the region PLA3.
  • the second circuit board 54 is fixed to the lower surface of the first portion 55A. A part of the second circuit board 54 extends into the internal space 28S of the connecting portion 28. Specifically, the second circuit board 54 extends from the vicinity of the rear end in the internal space 28S of the connecting portion 28 to the vicinity of the rear end of the first portion 55A through the through hole 29V. That is, in the present embodiment, the extending length of the heat radiating plate 55 in the internal space 28S along the front-rear direction is longer than the extending length of the second circuit board 54 in the internal space 28S along the front-rear direction.
  • the second light source 52 is arranged on the lower surface of the second circuit board 54, and is connected to the circuit formed on the second circuit board 54.
  • the second reflecting surface 21H of the reflector 20 is arranged below the second light source 52.
  • the wiring (not shown) connected to this circuit is led out to the outside of the vehicle headlight 1 through the notch 55V of the heat radiating plate 55 and the through hole 42V of the rear wall 42B of the holder 40. .. Therefore, power is supplied to the second light source 52 through this wiring and the circuit of the second circuit board 54.
  • the second light source 52 which has been supplied with electric power, emits light LH downward.
  • the second reflecting surface 21H is arranged below the second light source 52. Further, as described above, the second reflecting surface 21H reflects the light forward, that is, toward the opening 40FO of the holder 40 and the opening 20FO of the reflector 20, and arranges the light distribution pattern of the reflected light as a high beam. It is formed so as to change into an optical pattern. Therefore, the light LH is emitted in front of the vehicle headlight 1 so as to have a high beam light distribution pattern PH as shown in FIG. 7, for example.
  • the light distribution pattern PH is shown by a thick line, and the straight line S represents a horizontal line.
  • the region PHA1 is a region having a strong light intensity
  • the region PHA2 is a region having a lower light intensity than the PHA1.
  • the vehicle headlight 1 of the present embodiment is housed in a tubular holder 40 extending in the front-rear direction, which is the depth direction, and having an opening 40FO formed at the front end, and a holder 40.
  • the light sources 51 and 52 are provided, and the reflector 20 housed in the holder 40 and reflecting the light LL and LH emitted from the light sources 51 and 52 toward the opening 40FO is provided, and the outer wall 20B of the reflector 20 is provided with each other.
  • a pair of recesses 24, 26 that are recessed from opposite positions toward the inside of the reflector 20 are formed along the front-rear direction, and the holder 40 protrudes from the positions facing each other toward the inside of the holder 40 and is front-rear.
  • a pair of convex portions 44, 46 extending in the direction are provided, and the convex portions 44, 46 are configured to fit into the recessed portions 24, 26 over the entire length of the recessed portions 24, 26 in the front-rear direction. ..
  • the recessed portions 24, 26 and the convex portions 44, 46 both extend in the front-rear direction, and the convex portions 44, 46 are the total lengths of the recessed portions 24, 26 in the front-rear direction. Since the reflector 20 is fitted into the recesses 24 and 26 over the entire range, even if the reflector 20 tries to vibrate with respect to the holder 40 while the vehicle is running, the vibration of the reflector 20 with respect to the holder 40 is convex to fit the recesses 24 and 26. It can be suppressed by parts 44, 46.
  • the fitting structures of the recessed portions 24, 26 and the convex portions 44, 46 as described above are configured at positions facing each other, vibration due to the running of the vehicle or the like may occur. Even if the reflector 20 tries to rotate with respect to the holder 40, this rotation can be suppressed by the pair of fitting structures. Therefore, according to the vehicle headlight 1, the rattling of the reflector 20 can be effectively suppressed.
  • the headlights for vehicles mounted on two-wheeled vehicles tend to have a large amount of rattling on the reflector holder. Therefore, when the vehicle headlight 1 is mounted on a two-wheeled vehicle, the effect of suppressing the rattling of the reflector 20 can be enjoyed more remarkably.
  • the outer wall 20B of the reflector 20 is formed with recesses 24 and 26 extending in the front-rear direction. Therefore, if the reflector 20 is assembled to the holder 40 while the convex portions 44, 46 of the holder 40 are inserted into the recessed portions 24, 26, the convex portions 44, 46 serve as a guide, and the assembly accuracy can be improved. By improving the assembly accuracy in this way, for example, the light distribution performance can be improved.
  • the recessed portions 24 and 26 extend to the front end of the holder 40 on the opening 40FO side, that is, the opening 20FO which is the front end of the reflector 20. Therefore, the recessed portions 24, 26 and the convex portions 44, 46 are fitted in a wider range than in the case where the recessed portions 24, 26 do not extend to the opening 20FO. Therefore, the rattling of the reflector can be suppressed more effectively.
  • the reflector 20 rattles due to the vibration in the vertical direction. Can be effectively suppressed.
  • the reflector 20 of the vehicle headlight 1 has a circular outer shape except for the recessed portion in the front view.
  • the reflector has a circular outer shape in the front view, it tends to rotate more easily with respect to the holder than in the case where the reflector has a non-circular shape in the front view.
  • the recessed portions 24, 26 and the convex portions 44, 46 are formed so as to become narrower toward the inside of the reflector in the front view, so that the reflector 20 is circular. Even if there is, the rattling of the reflector 20 can be effectively suppressed.
  • the inner wall of the reflector 20 of the vehicle headlight 1 includes the protruding inner walls 25 and 27 corresponding to the recesses 24 and 26, and between these a pair of protruding inner walls 25 and 27.
  • a connecting portion 28 for connecting the protruding inner walls 25 and 27 to each other is arranged in the. According to such a configuration, the bending of the reflector 20 can be suppressed as compared with the case where the connecting portion 28 is not provided and the protruding inner walls 25 and 27 are separated from each other. It is not essential to provide the connecting portion 28.
  • the connecting portion 28 is formed so that the width in the vertical direction becomes narrower toward the front, which is on the opening 40FO side. With such a configuration, it is possible to effectively suppress the light LL, LH reflected by the reflecting surfaces 21L, 21H of the reflector 20 from hitting the connecting portion 28. It is not always necessary to form the connecting portion 28 so that the width of the connecting portion 28 in the vertical direction becomes narrower toward the front.
  • the internal space 28S is formed in the connecting portion 28.
  • a part of the circuit boards 53 and 54 can be arranged in the internal space 28S.
  • the area of the circuit boards 53 and 54 can be expanded. It should be noted that a part of the circuit boards 53 and 54 does not necessarily have to be arranged in the internal space 28S of the connecting portion 28.
  • a part of the heat radiating plate 55 is arranged in the internal space 28S of the connecting portion 28, and extends along the front-rear direction of the heat radiating plate 55 in the internal space 28S.
  • the existing length is longer than the extending length along the front-rear direction of the circuit boards 53 and 54 in the internal space 28S.
  • the recessed portion extends to the opening of the reflector has been described, but the recessed portion does not have to extend to the front end of the reflector in this way. That is, it is sufficient that the outer wall of the reflector 20 is formed with a recess extending in the front-rear direction.
  • the recessed portion and the convex portion may be tilted by a predetermined angle with respect to the left-right direction, or It may extend in the vertical direction.
  • the rattling of the reflector can be suppressed more effectively by extending the recessed portion and the convex portion in the left-right direction.
  • the recessed portion and the convex portion are formed so as to become narrower toward the inside of the reflector, but this configuration is not essential. That is, the recessed portion and the convex portion may be, for example, rectangular.
  • the reflector has a circular outer shape excluding the recessed portion
  • the outer shape of the reflector is not particularly limited.
  • the outer shape of the front cover and the outer shape of the holder are not limited to a circular shape.
  • the protruding length of each of the pair of convex portions is approximately 25% of the diameter of the holder.
  • the inwardly protruding length of the pair of convex reflectors is approximately 25% of the total width of the holder in the direction in which the convex portions protrude.
  • the protruding length of each of the pair of convex portions is not limited to this.
  • the protruding length of each of the pair of convex portions may be 10% or more and 40% or less of the total width of the holder.
  • the protruding length of each of the pair of convex portions is 10% or more of the total width of the holder, for example, the area where the reflector and the holder contact can be widened, and the rattling of the reflector can be effectively suppressed. obtain.
  • the protruding length of each of the pair of convex portions is 40% or less of the total width of the holder, for example, a space for accommodating the light source portion can be reasonably secured.
  • the vehicle headlight is a parabolic type vehicle lighting device having two reflecting surfaces.
  • the vehicle lamps extend in the depth direction and have an opening formed on one side in the depth direction, a light source housed in the holder, and a light source housed in the holder.
  • the holder includes a reflector that reflects light emitted from a light source toward the opening, and a pair of recesses that are recessed from positions facing each other toward the inside of the reflector on the outer wall of the reflector.
  • Vehicle lighting fixtures are not limited to parabolic vehicle headlights having two reflective surfaces, as long as they are configured to fit into the recess over the entire length of the portion in the depth direction.
  • it may be a vehicle lamp having one reflective surface, or it may be a vehicle lamp having three or more reflective surfaces.
  • the vehicle lighting equipment may be a lighting equipment for a tail lamp or a blinker lamp.
  • the vehicle lamp is, for example, a vehicle lamp for a winker lamp and the reflector is configured to reflect the light emitted from the light source to the left or right, the left-right direction can be the depth direction.
  • a vehicle lamp is mounted on a two-wheeled vehicle
  • the present invention is not limited to this.
  • it may be mounted on a four-wheeled vehicle.
  • a vehicle lamp that can suppress the rattling of the reflector is provided and can be used in the field of automobiles and the like.

Abstract

A vehicle headlight (1) serving as a vehicle lamp is provided with: a cylindrical holder (40) which extends in a longitudinal direction that is a depth direction and has an opening (40FO) formed at a front end; a light source (51, 52) which is housed in the holder (40); and a reflector (20) which is housed in the holder (40) and reflects light (LL, LH) emitted from the light source (51, 52) toward the opening (40FO). In an outer wall (20B) of the reflector (20), a pair of recesses (24, 26) recessed toward the inside of the reflector (20) from positions opposite each other are formed along the longitudinal direction, in the holder (40), a pair of protrusions (44, 46) protruding toward the inside of the holder (40) from positions opposite each other and extending in the longitudinal direction are provided, and the protrusions (44, 46) are fitted into the recesses (24, 26) over the entire lengths in the longitudinal direction of the recesses (24, 26).

Description

車両用灯具Vehicle lighting
　本発明は、車両用灯具に関する。 The present invention relates to a vehicle lamp.
　車両用灯具である車両用前照灯には、光源から出射する光を前方に出射するリフレクタと、当該リフレクタを保持するホルダとを備えたものがある。例えば、下記特許文献１には、このような車両用前照灯の例が記載されている。この特許文献１に記載された車両用前照灯では、リフレクタの背面に設けられた後方に延びるリブとホルダに設けられた窪み部とが嵌合し、この嵌合部がネジで螺合されることによって、リフレクタとホルダとが固定される。 Some vehicle headlights, which are vehicle lighting fixtures, are provided with a reflector that emits light emitted from a light source forward and a holder that holds the reflector. For example, Patent Document 1 below describes an example of such a vehicle headlight. In the vehicle headlight described in Patent Document 1, a rib extending rearward provided on the back surface of the reflector and a recessed portion provided in the holder are fitted, and the fitting portion is screwed with a screw. By doing so, the reflector and the holder are fixed.
特開２０１４－２３５８７４号公報Japanese Unexamined Patent Publication No. 2014-235874
　しかし、上記特許文献１に記載された車両用前照灯では、リフレクタとホルダとを固定する部分は上記嵌合部のみであるため、車両の走行中などにリフレクタがホルダに対して振動したり回動したりしてリフレクタががたつくと、リフレクタとホルダとを固定する上記嵌合部に応力が集中する懸念がある。このため、リフレクタのがたつきを抑制したいとの要請がある。 However, in the vehicle headlight described in Patent Document 1, since the portion that fixes the reflector and the holder is only the fitting portion, the reflector may vibrate with respect to the holder while the vehicle is running. If the reflector rattles due to rotation, there is a concern that stress will be concentrated on the fitting portion that fixes the reflector and the holder. For this reason, there is a demand for suppressing rattling of the reflector.
　そこで、本発明は、リフレクタのがたつきを抑制し得る車両用灯具を提供することを目的とする。 Therefore, an object of the present invention is to provide a vehicle lamp that can suppress the rattling of the reflector.
　上記目的の達成のため、本発明の車両用灯具は、奥行方向に延在して当該奥行方向の一方側に開口が形成される筒状のホルダと、前記ホルダ内に収容される光源と、前記ホルダ内に収容され、前記光源から出射する光を前記開口に向かって反射するリフレクタと、を備え、前記リフレクタの外壁には、互いに対向する位置から前記リフレクタの内側に向かって窪む１対の窪み部が、前記奥行方向に沿って形成され、前記ホルダには、互いに対向する位置から前記ホルダの内側に向かって突出して前記奥行方向に延在する１対の凸部が設けられ、前記凸部は、前記窪み部の前記奥行方向における全長にわたって前記窪み部に嵌合することを特徴とするものである。 In order to achieve the above object, the vehicle lamp of the present invention includes a tubular holder extending in the depth direction and having an opening formed on one side in the depth direction, a light source housed in the holder, and a light source. A pair of reflectors housed in the holder and reflecting light emitted from the light source toward the opening, and the outer wall of the reflectors are recessed from positions facing each other toward the inside of the reflectors. The recessed portion is formed along the depth direction, and the holder is provided with a pair of convex portions that protrude toward the inside of the holder from positions facing each other and extend in the depth direction. The convex portion is characterized in that it fits into the recessed portion over the entire length of the recessed portion in the depth direction.
　上記のように、この車両用灯具では、リフレクタに互いに対向する位置からリフレクタの内側に向かって延びる１対の窪み部が形成されており、ホルダには互いに対向する位置からホルダの内側に向かって突出する１対の凸部が設けられている。これら凸部のそれぞれは、１対の窪み部のそれぞれに嵌合する。また、これら窪み部及び凸部はいずれも奥行方向に延びており、凸部は窪み部の奥行方向における全長にわたって窪み部に嵌合する。したがって、車両の走行中などにリフレクタがホルダに対して振動しようとしても、リフレクタのホルダに対する振動が、窪み部に嵌合する凸部によって抑制され得る。また、この車両用灯具では、上記のような窪み部と凸部との嵌合構造が互いに対向する位置に構成されているため、車両の走行による振動等によってリフレクタがホルダに対して回動しようとしても、この回動が上記１対の嵌合構造によって抑制され得る。したがって、この車両用灯具によれば、リフレクタのがたつきを抑制し得る。 As described above, in this vehicle lamp, a pair of recesses extending toward the inside of the reflector from the positions facing each other are formed in the reflector, and the holder is formed from the positions facing each other toward the inside of the holder. A pair of protruding protrusions is provided. Each of these protrusions fits into each of the pair of recesses. Further, both the recessed portion and the convex portion extend in the depth direction, and the convex portion fits into the recessed portion over the entire length in the depth direction of the recessed portion. Therefore, even if the reflector tries to vibrate with respect to the holder while the vehicle is running, the vibration of the reflector with respect to the holder can be suppressed by the convex portion fitted in the recessed portion. Further, in this vehicle lamp, since the fitting structure of the recessed portion and the convex portion as described above is configured at a position facing each other, the reflector will rotate with respect to the holder due to vibration due to the running of the vehicle or the like. Even so, this rotation can be suppressed by the pair of fitting structures. Therefore, according to this vehicle lamp, rattling of the reflector can be suppressed.
　さらに、この車両用灯具では、上記窪み部がリフレクタの外壁に形成されている。したがって、当該窪み部にホルダの凸部を挿通させながらリフレクタをホルダに組み付ければ、この凸部がガイドとなり組み付け精度がより良好になり得る。このように組み付け精度がより良好になることで、例えば配光性能がより良好になり得る。 Furthermore, in this vehicle lamp, the recessed portion is formed on the outer wall of the reflector. Therefore, if the reflector is assembled to the holder while the convex portion of the holder is inserted into the recessed portion, the convex portion serves as a guide and the assembly accuracy can be improved. By improving the assembly accuracy in this way, for example, the light distribution performance can be improved.
　また、前記窪み部は、前記リフレクタの前記開口側の端部まで延在することが好ましい。 Further, it is preferable that the recessed portion extends to the end portion of the reflector on the opening side.
　この場合、窪み部が開口側の端部まで延びていない場合に比べて窪み部と凸部とが広い範囲で嵌合するため、リフレクタのがたつきをより効果的に抑制し得る。 In this case, since the recessed portion and the convex portion are fitted in a wider range than in the case where the recessed portion does not extend to the end on the opening side, rattling of the reflector can be suppressed more effectively.
　また、前記窪み部及び前記凸部は、前記奥行方向に垂直な左右方向に延在することが好ましい。 Further, it is preferable that the recessed portion and the convex portion extend in the left-right direction perpendicular to the depth direction.
　この場合、窪み部と凸部とからなる１対の嵌合構造がそれぞれ左右方向に延在するため、特に上下方向の振動によるリフレクタのがたつきをより効果的に抑制し得る。 In this case, since the pair of fitting structures consisting of the recessed portion and the convex portion extend in the left-right direction, the rattling of the reflector due to the vibration in the vertical direction can be suppressed more effectively.
　また、前記窪み部及び前記凸部は、前記リフレクタの内側に行くに従って狭くなるように形成されてもよい。 Further, the recessed portion and the convex portion may be formed so as to become narrower toward the inside of the reflector.
　このように窪み部及び凸部がリフレクタの内側に行くに従って狭くなるように形成されることで、リフレクタがホルダに対して回動しようとする場合にリフレクタの窪み部がホルダの凸部に広い範囲で接触し得る。このため、リフレクタの回動によるがたつきをより効果的に抑制し得る。 By forming the concave portion and the convex portion so as to become narrower toward the inside of the reflector in this way, when the reflector tries to rotate with respect to the holder, the concave portion of the reflector has a wide range over the convex portion of the holder. Can be contacted at. Therefore, rattling due to rotation of the reflector can be suppressed more effectively.
　また、上記窪み部及び上記凸部が上記リフレクタの内側に行くに従って狭くなる場合、前記リフレクタは、前記開口側から見た正面視において前記窪み部を除いて円形の外形を有してもよい。 Further, when the recessed portion and the convex portion become narrower toward the inside of the reflector, the reflector may have a circular outer shape excluding the recessed portion when viewed from the opening side.
　リフレクタが正面視において円形の外形を有する場合、リフレクタが正面視において非円形の場合に比べてホルダに対して回動し易い傾向にある。しかし、上記のように、窪み部及び凸部を正面視においてリフレクタの内側に行くに従って狭くすることで、リフレクタを円形に形成する場合でもリフレクタのがたつきを効果的に抑制し得る。 When the reflector has a circular outer shape in the front view, it tends to rotate more easily with respect to the holder than in the case where the reflector has a non-circular shape in the front view. However, as described above, by narrowing the recessed portion and the convex portion toward the inside of the reflector in the front view, rattling of the reflector can be effectively suppressed even when the reflector is formed in a circular shape.
　また、前記リフレクタの内壁は、前記窪み部に対応する突出内壁を含み、１対の前記突出内壁の間には、当該突出内壁同士を連結する連結部が配置されてもよい。 Further, the inner wall of the reflector includes a protruding inner wall corresponding to the recessed portion, and a connecting portion for connecting the protruding inner walls may be arranged between the pair of the protruding inner walls.
　窪み部を形成する上記突出内壁が連結部によって連結されることで、リフレクタの撓みを効果的に抑制し得る。 By connecting the protruding inner wall forming the recessed portion by the connecting portion, the bending of the reflector can be effectively suppressed.
　また、突出内壁同士が連結部によって連結される場合、前記連結部は、前記連結部が前記突出内壁同士を連結する方向と垂直な方向における幅が前記開口側に行くに従って狭くなるように形成されてもよい。 When the protruding inner walls are connected to each other by a connecting portion, the connecting portion is formed so that the width in the direction perpendicular to the direction in which the connecting portion connects the protruding inner walls becomes narrower toward the opening side. You may.
　このような構成により、リフレクタで反射する光が連結部に当たることを効果的に抑制し得る。 With such a configuration, it is possible to effectively suppress the light reflected by the reflector from hitting the connecting portion.
　また、突出内壁同士が連結部によって連結される場合、この車両用灯具は、前記光源に電力を供給する回路基板をさらに備え、前記連結部の内側には内部空間が形成され、前記回路基板の一部が前記内部空間内に配置されてもよい。 Further, when the protruding inner walls are connected to each other by a connecting portion, the vehicle lamp further includes a circuit board for supplying electric power to the light source, and an internal space is formed inside the connecting portion to form the circuit board. A part may be arranged in the internal space.
　このように回路基板の一部を連結部の内部に配置することによって、回路基板の面積を広げ得る。 By arranging a part of the circuit board inside the connecting portion in this way, the area of the circuit board can be expanded.
　また、車両用灯具が回路基板を備える場合、この車両用灯具は、前記回路基板が固定される放熱板をさらに備え、前記放熱板の一部は前記内部空間内に配置され、前記内部空間内における前記放熱板の前記奥行方向に沿った延在長さは、前記内部空間内における前記回路基板の前記奥行方向に沿った延在長さよりも長くてもよい。 When the vehicle lighting equipment includes a circuit board, the vehicle lighting equipment further includes a heat radiating plate to which the circuit board is fixed, and a part of the heat radiating plate is arranged in the internal space and is provided in the internal space. The extending length of the heat radiating plate along the depth direction in the above may be longer than the extending length of the circuit board along the depth direction in the internal space.
　このように構成することで、車両用灯具の内部において放熱板の面積を広げ得、光源から生じる熱の放熱効率を上げ得る。 With this configuration, the area of the heat radiating plate can be expanded inside the vehicle lamp, and the heat radiating efficiency of the heat generated from the light source can be improved.
　以上のように、本発明によれば、リフレクタのがたつきを抑制し得る車両用灯具が提供され得る。 As described above, according to the present invention, it is possible to provide a vehicle lamp that can suppress the rattling of the reflector.
本発明の実施形態に係る車両用前照灯の分解斜視図である。It is an exploded perspective view of the headlight for a vehicle which concerns on embodiment of this invention. 本発明の実施形態に係る車両用前照灯の正面斜視図であり、図１に示されるフロントカバーの図示が省略された図である。It is a front perspective view of the headlight for a vehicle which concerns on embodiment of this invention, and is the figure which omitted the illustration of the front cover shown in FIG. 本発明の実施形態に係る車両用前照灯を上下方向における中央で切断した横断面図である。It is sectional drawing which cut at the center in the vertical direction of the headlight for a vehicle which concerns on embodiment of this invention. 図３に示すＡ－Ａ線における縦断面図である。FIG. 3 is a vertical cross-sectional view taken along the line AA shown in FIG. 図３に示すＢ－Ｂ線における縦断面図である。FIG. 3 is a vertical cross-sectional view taken along the line BB shown in FIG. ロービームの配光パターンを示す図である。It is a figure which shows the light distribution pattern of a low beam. ハイビームの配光パターンを示す図である。It is a figure which shows the light distribution pattern of a high beam.
　以下、本発明に係る車両用灯具を実施するための形態が添付図面とともに例示される。以下に例示する実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。本発明は、その趣旨を逸脱することなく、以下の実施形態から変更、改良することができる。また、上記添付図面では、理解を容易にするために各部材の寸法が誇張して示されている場合がある。 Hereinafter, a mode for carrying out the vehicle lamp according to the present invention will be illustrated together with the attached drawings. The embodiments illustrated below are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. The present invention can be modified or improved from the following embodiments without departing from the spirit of the present invention. Further, in the above-mentioned attached drawings, the dimensions of each member may be exaggerated for ease of understanding.
　本実施形態に係る車両用灯具は、例えば二輪自動車に搭載可能な車両用前照灯である。図１は本実施形態の車両用前照灯１を示す分解斜視図であり、図２は車両用前照灯１を示す正面斜視図である。 The vehicle lighting fixture according to the present embodiment is, for example, a vehicle headlight that can be mounted on a two-wheeled vehicle. FIG. 1 is an exploded perspective view showing the vehicle headlight 1 of the present embodiment, and FIG. 2 is a front perspective view showing the vehicle headlight 1.
　図１及び図２に示すように、本実施形態の車両用前照灯１はパラボラ型の灯具である。車両用前照灯１は、概ね円筒形の外形を有しており、フロントカバー１０と、リフレクタ２０と、ホルダ４０と、光源部５０と、を主な構成として備えている。なお、図２では、フロントカバー１０の図示が省略されている。 As shown in FIGS. 1 and 2, the vehicle headlight 1 of the present embodiment is a parabolic lamp. The vehicle headlight 1 has a substantially cylindrical outer shape, and includes a front cover 10, a reflector 20, a holder 40, and a light source unit 50 as main configurations. In FIG. 2, the front cover 10 is not shown.
　フロントカバー１０は、例えば透明樹脂から形成されており、前後方向に延びる円筒部１１と、円筒部１１の前方端を塞ぐ円形の蓋部１２とを含んでいる。なお、車両用灯具が車両用前照灯として車両に搭載される場合、上記前後方向は車両用前照灯の奥行方向と考えることができる。 The front cover 10 is made of, for example, a transparent resin, and includes a cylindrical portion 11 extending in the front-rear direction and a circular lid portion 12 that closes the front end of the cylindrical portion 11. When the vehicle lighting equipment is mounted on the vehicle as a vehicle headlight, the front-rear direction can be considered as the depth direction of the vehicle headlight.
　リフレクタ２０は、後述する光源から出射する光を前方に反射する部材であり、例えば樹脂からなり、一体成型されてもよい。このリフレクタ２０は、中空の概ねドーム状の外形を有しており、前方から見た正面視において、後述する窪み部を除いて概ね円形になるように形成されている。より具体的には、リフレクタ２０の前方端には円形の開口２０ＦＯが形成されており、リフレクタ２０は、この前方端から後方に向かって突出する形状を有している。つまり、リフレクタ２０は、前方に位置する概ね円筒形の円筒部２２と、円筒部２２の後方に位置して円筒部２２に接続するドーム部２９とを含んでいる。ドーム部２９は、直径が前方から後方に向かって次第に小さくなるように形成され、ドーム部２９の前方端の直径は円筒部２２の直径と概ね同じ長さである。 The reflector 20 is a member that reflects light emitted from a light source, which will be described later, forward. For example, the reflector 20 may be made of resin and integrally molded. The reflector 20 has a hollow substantially dome-shaped outer shape, and is formed so as to be substantially circular except for a recessed portion described later when viewed from the front. More specifically, a circular opening 20FO is formed at the front end of the reflector 20, and the reflector 20 has a shape that projects rearward from the front end. That is, the reflector 20 includes a substantially cylindrical cylindrical portion 22 located in front of the reflector 20 and a dome portion 29 located behind the cylindrical portion 22 and connected to the cylindrical portion 22. The dome portion 29 is formed so that the diameter gradually decreases from the front to the rear, and the diameter of the front end of the dome portion 29 is substantially the same as the diameter of the cylindrical portion 22.
　このリフレクタ２０の外壁２０Ｂには、互いに対向する位置からリフレクタ２０の内側に向かって窪む１対の窪み部が形成されている。すなわち、リフレクタ２０の外壁２０Ｂには、リフレクタ２０の右端部からリフレクタ２０の内側に向かって窪む右窪み部２４と、リフレクタ２０の左端部からリフレクタ２０の内側に向かって窪む左窪み部２６とが形成されている。別言すれば、図１に示すように、リフレクタ２０の内壁は、右窪み部２４及び左窪み部２６に対応する突出内壁２５，２７を含んでいる。 The outer wall 20B of the reflector 20 is formed with a pair of recesses that are recessed from positions facing each other toward the inside of the reflector 20. That is, the outer wall 20B of the reflector 20 has a right recess 24 that is recessed from the right end of the reflector 20 toward the inside of the reflector 20, and a left recess 26 that is recessed from the left end of the reflector 20 toward the inside of the reflector 20. And are formed. In other words, as shown in FIG. 1, the inner wall of the reflector 20 includes the protruding inner walls 25 and 27 corresponding to the right recess 24 and the left recess 26.
　なお、本明細書において「右」「左」とは、車両用前照灯１を搭載する車両の進行方向に対して右側及び左側を意味する。 In addition, in this specification, "right" and "left" mean the right side and the left side with respect to the traveling direction of the vehicle equipped with the vehicle headlight 1.
　図３は車両用前照灯１を上下方向における中央で切断した横断面図であり、図４は図３に示すＡ－Ａ線における縦断面図である。なお、上下方向とは、前後方向及び左右方向に垂直な方向である。 FIG. 3 is a cross-sectional view of the vehicle headlight 1 cut at the center in the vertical direction, and FIG. 4 is a vertical cross-sectional view taken along the line AA shown in FIG. The vertical direction is a direction perpendicular to the front-rear direction and the left-right direction.
　図３及び図４に示すように、上記突出内壁２５，２７のそれぞれは、前後方向に延在しており、本実施形態ではリフレクタ２０の前方端である開口２０ＦＯまで延在している。すなわち、突出内壁２５に対応する右窪み部２４と、突出内壁２７に対応する左窪み部２６とは、それぞれ、開口２０ＦＯまで前後方向に延在している。 As shown in FIGS. 3 and 4, each of the protruding inner walls 25 and 27 extends in the front-rear direction, and in the present embodiment, extends to the opening 20FO which is the front end of the reflector 20. That is, the right recessed portion 24 corresponding to the protruding inner wall 25 and the left recessed portion 26 corresponding to the protruding inner wall 27 extend in the front-rear direction to the opening 20FO, respectively.
　また、本実施形態では、図１及び図２に示すように、突出内壁２５，２７のそれぞれは、リフレクタ２０の内側に向かって傾斜する略Ｖ字状に形成されており、換言すれば、リフレクタ２０の内側に行くに従って狭くなるように形成されている。すなわち、右窪み部２４及び左窪み部２６のそれぞれは、リフレクタ２０の内側に行くに従って狭くなるように形成されている。 Further, in the present embodiment, as shown in FIGS. 1 and 2, each of the protruding inner walls 25 and 27 is formed in a substantially V shape inclining toward the inside of the reflector 20, in other words, the reflector. It is formed so as to become narrower toward the inside of 20. That is, each of the right recessed portion 24 and the left recessed portion 26 is formed so as to become narrower toward the inside of the reflector 20.
　なお、突出内壁２５，２７のそれぞれにおける前方端かつリフレクタ２０の中心側の部分は、前方から後方に行くに従ってリフレクタ２０の中心に近くなるように傾斜する傾斜部２５Ｔ，２７Ｔになっている。すなわち、傾斜部２５Ｔ，２７Ｔは、上記奥行方向における開口２０ＦＯ側から開口２０ＦＯ側とは反対側に行くに従ってリフレクタ２０の中心に近くなるように傾斜している。突出内壁２５，２７がこのような傾斜部２５Ｔ，２７Ｔを有することによって、突出内壁２５，２７の前方端かつ中心側の部分が角になっている場合に比べて、突出内壁２５，２７の強度が強化され得る。 The front end of each of the protruding inner walls 25 and 27 and the portion on the center side of the reflector 20 are inclined portions 25T and 27T that are inclined so as to be closer to the center of the reflector 20 from the front to the rear. That is, the inclined portions 25T and 27T are inclined so as to be closer to the center of the reflector 20 from the opening 20FO side in the depth direction toward the side opposite to the opening 20FO side. By having the protruding inner walls 25 and 27 having such inclined portions 25T and 27T, the strength of the protruding inner walls 25 and 27 is stronger than that in the case where the front end and the central side portion of the protruding inner walls 25 and 27 are cornered. Can be strengthened.
　図１から図３に示すように、突出内壁２５，２７は、左右方向に延在する連結部２８によって連結されている。図５は、図３に示すＢ－Ｂ線における縦断面図であり、車両用前照灯１を左右方向における中央で切断した縦断面図である。 As shown in FIGS. 1 to 3, the protruding inner walls 25 and 27 are connected by a connecting portion 28 extending in the left-right direction. FIG. 5 is a vertical cross-sectional view taken along the line BB shown in FIG. 3, which is a vertical cross-sectional view of the vehicle headlight 1 cut at the center in the left-right direction.
　図５に示すように、連結部２８は、左右方向に延在して突出内壁２５，２７同士を連結している。また、本実施形態において、連結部２８は、上下方向における幅が前方側に行くに従って狭くなる略Ｖ字状の外形を有しており、この連結部２８の内部には前後方向に延在する略Ｖ字状の内部空間２８Ｓが形成されている。なお、上下方向は、連結部２８が突出内壁２５，２７同士を連結する方向である左右方向に垂直な方向である。また、上下方向及び左右方向におけるドーム部２９の概ね中央には、ドーム部２９を貫通する貫通孔２９Ｖが形成されている。 As shown in FIG. 5, the connecting portion 28 extends in the left-right direction to connect the protruding inner walls 25 and 27 to each other. Further, in the present embodiment, the connecting portion 28 has a substantially V-shaped outer shape in which the width in the vertical direction becomes narrower toward the front side, and extends in the front-rear direction inside the connecting portion 28. A substantially V-shaped internal space 28S is formed. The vertical direction is a direction perpendicular to the left-right direction in which the connecting portion 28 connects the protruding inner walls 25 and 27 to each other. Further, a through hole 29V penetrating the dome portion 29 is formed in the substantially center of the dome portion 29 in the vertical direction and the horizontal direction.
　図１、図４、及び図５に示すように、リフレクタ２０は、突出内壁２５，２７及び連結部２８を境にして上側領域と下側領域とに区切られている。この上側領域におけるリフレクタ２０の前面には所定の金属が蒸着されており、当該前面が第１反射面２１Ｌになっている。また、下側領域におけるリフレクタ２０の前面にも所定の金属が蒸着されており、当該前面が第２反射面２１Ｈになっている。第１反射面２１Ｌ及び第２反射面は、いずれもドーム部２９と円筒部２２とにわたって形成されており、図４及び図５の縦断面視において概ね半放物線の外形を有している。 As shown in FIGS. 1, 4, and 5, the reflector 20 is divided into an upper region and a lower region with the protruding inner walls 25 and 27 and the connecting portion 28 as boundaries. A predetermined metal is vapor-deposited on the front surface of the reflector 20 in the upper region, and the front surface is the first reflecting surface 21L. Further, a predetermined metal is also deposited on the front surface of the reflector 20 in the lower region, and the front surface is the second reflecting surface 21H. Both the first reflecting surface 21L and the second reflecting surface are formed over the dome portion 29 and the cylindrical portion 22, and have a substantially semi-parabolic outer shape in the vertical cross-sectional views of FIGS. 4 and 5.
　なお、突出内壁２５，２７及び連結部２８の表面に所定の金属を蒸着してもしなくてもよい。突出内壁２５，２７及び連結部２８の表面に所定の金属を蒸着する場合、突出内壁２５，２７及び連結部２８の表面においても光を反射させることができ、例えば車両用前照灯から出射する光の全光束量が低下することを抑制し得る。一方、突出内壁２５，２７及び連結部２８の表面に所定の金属を蒸着しない場合、これらの部位における光の反射が抑制されるため、例えば所望の配光パターンを形成することが容易になり得る。 Note that a predetermined metal may or may not be deposited on the surfaces of the protruding inner walls 25 and 27 and the connecting portion 28. When a predetermined metal is vapor-deposited on the surfaces of the protruding inner walls 25, 27 and the connecting portion 28, light can be reflected on the surfaces of the protruding inner walls 25, 27 and the connecting portion 28, for example, emitted from a vehicle headlight. It is possible to suppress a decrease in the total luminous flux amount of light. On the other hand, when a predetermined metal is not deposited on the surfaces of the protruding inner walls 25, 27 and the connecting portion 28, the reflection of light at these portions is suppressed, so that, for example, a desired light distribution pattern can be easily formed. ..
　本実施形態では、第１反射面２１Ｌは、後述する光源から出射する光を前方に、すなわち開口２０ＦＯに向かって反射して、反射した光の配光パターンをロービームの配光パターンに変化させる。また、本実施形態では、第２反射面２１Ｈは、後述する光源から出射する光を前方に、すなわち開口２０ＦＯに向かって反射して、反射した光をハイビームの配光パターンに変化させる。 In the present embodiment, the first reflecting surface 21L reflects the light emitted from the light source described later toward the front, that is, toward the opening 20FO, and changes the light distribution pattern of the reflected light into a low beam light distribution pattern. Further, in the present embodiment, the second reflecting surface 21H reflects the light emitted from the light source described later toward the front, that is, toward the opening 20FO, and changes the reflected light into a high beam light distribution pattern.
　図１から図５に示すように、ホルダ４０は中空の概ね円筒形の外形を有しており、上記奥行方向である前後方向に延在している。このホルダ４０の一方側である前方側には開口４０ＦＯが形成されており、他方側である後方側の端部は一部を除いて後壁４２Ｂによって塞がれている。ホルダ４０はリフレクタ２０よりも大きな寸法に形成されており、このようなホルダ４０の内部にリフレクタ２０や光源部５０などが収容されて保持される。ホルダ４０は、前方に位置する大径部４１と、後方に位置して大径部４１よりも小さな直径を有する小径部４２と、大径部４１と小径部４２とを連結する連結部４３と、を含んでいる。すなわち、大径部４１の前方端に開口４０ＦＯが形成されており、小径部４２の後方端が上記後壁４２Ｂとなっている。図５に示すように、ホルダ４０の後壁４２Ｂのうち、上下方向及び左右方向の概ね中央に、後壁４２Ｂを貫通する貫通孔４２Ｖが形成されている。なお、大径部４１、小径部４２、及び連結部４３をまとめて本体部ということがある。 As shown in FIGS. 1 to 5, the holder 40 has a hollow, substantially cylindrical outer shape, and extends in the front-rear direction, which is the depth direction. An opening 40FO is formed on the front side, which is one side of the holder 40, and the rear end, which is the other side, is closed by the rear wall 42B except for a part. The holder 40 is formed to have a size larger than that of the reflector 20, and the reflector 20, the light source unit 50, and the like are housed and held inside the holder 40. The holder 40 includes a large diameter portion 41 located in the front, a small diameter portion 42 located in the rear and having a diameter smaller than that of the large diameter portion 41, and a connecting portion 43 connecting the large diameter portion 41 and the small diameter portion 42. , Including. That is, an opening 40FO is formed at the front end of the large diameter portion 41, and the rear end of the small diameter portion 42 is the rear wall 42B. As shown in FIG. 5, of the rear wall 42B of the holder 40, a through hole 42V penetrating the rear wall 42B is formed substantially in the center in the vertical and horizontal directions. The large diameter portion 41, the small diameter portion 42, and the connecting portion 43 may be collectively referred to as a main body portion.
　図３に示すように、ホルダ４０には、互いに対向する位置からホルダ４０の内側に向かって突出する１対の凸部が設けられている。すなわち、ホルダ４０には、ホルダ４０の右端部からホルダ４０の内側に向かって突出する右凸部４４と、ホルダ４０の左端部からホルダ４０の内側に向かって突出する左凸部４６とが設けられている。右凸部４４は、正面視において、上記リフレクタ２０の右窪み部２４と概ね同一の外形かつ右窪み部２４よりも僅かに小さな寸法に形成される。同様に、左凸部４６は、正面視において、上記リフレクタ２０の左窪み部２６と概ね同一の外形かつ左窪み部２６よりも僅かに小さな寸法に形成される。なお、右凸部４４及び左凸部４６は、上記本体部と一体成型されてもよいし、本体部とは別体として本体部に別途取り付けられてもよい。 As shown in FIG. 3, the holder 40 is provided with a pair of convex portions protruding inward of the holder 40 from positions facing each other. That is, the holder 40 is provided with a right convex portion 44 projecting from the right end portion of the holder 40 toward the inside of the holder 40, and a left convex portion 46 projecting from the left end portion of the holder 40 toward the inside of the holder 40. Has been done. The right convex portion 44 is formed to have substantially the same outer shape as the right recess portion 24 of the reflector 20 and slightly smaller in size than the right recess portion 24 in front view. Similarly, the left convex portion 46 is formed to have substantially the same outer shape as the left recessed portion 26 of the reflector 20 and slightly smaller in size than the left recessed portion 26 in front view. The right convex portion 44 and the left convex portion 46 may be integrally molded with the main body portion, or may be separately attached to the main body portion as a separate body from the main body portion.
　右凸部４４及び左凸部４６のそれぞれは、ホルダ４０の後壁４２Ｂから前方に向かって延在しており、本実施形態では、後壁４２Ｂからホルダ４０の開口４０ＦＯまで延在している。右凸部４４及び左凸部４６のそれぞれは、小径部４２及び連結部４３に接続されており、一方で、大径部４１からは離間している。すなわち、大径部４１と右凸部４４との間、及び、大径部４１と左凸部４６との間には、それぞれ空隙Ｇが形成されている。 Each of the right convex portion 44 and the left convex portion 46 extends forward from the rear wall 42B of the holder 40, and in the present embodiment, extends from the rear wall 42B to the opening 40FO of the holder 40. .. Each of the right convex portion 44 and the left convex portion 46 is connected to the small diameter portion 42 and the connecting portion 43, while being separated from the large diameter portion 41. That is, a gap G is formed between the large diameter portion 41 and the right convex portion 44, and between the large diameter portion 41 and the left convex portion 46, respectively.
　本実施形態では、右凸部４４及び左凸部４６のそれぞれの左右方向における突出長さは、ホルダ４０の直径の概ね２５％の長さである。より具体的には、凸部４４，４６のそれぞれの前方部分の突出長さは大径部４１の直径の概ね２５％の長さであり、後方部分の突出長さは小径部４２の直径の概ね２５％の長さであり、中間部分の突出長さは連結部４３の直径の概ね２５％の長さである。 In the present embodiment, the protruding lengths of the right convex portion 44 and the left convex portion 46 in the left-right direction are approximately 25% of the diameter of the holder 40. More specifically, the protruding length of each of the front portions of the convex portions 44 and 46 is approximately 25% of the diameter of the large diameter portion 41, and the protruding length of the rear portion is that of the diameter of the small diameter portion 42. The length is approximately 25%, and the protruding length of the intermediate portion is approximately 25% of the diameter of the connecting portion 43.
　また、本実施形態では、図１及び図２に示すように、右凸部４４及び左凸部４６のそれぞれは、ホルダ４０の内側に向かって傾斜する略Ｖ字状に形成されており、換言すれば、ホルダ４０の内側に行くに従って狭くなるように形成されている。 Further, in the present embodiment, as shown in FIGS. 1 and 2, each of the right convex portion 44 and the left convex portion 46 is formed in a substantially V shape inclining toward the inside of the holder 40, in other words. Then, it is formed so as to become narrower toward the inside of the holder 40.
　図３から図５に示すように、ホルダ４０の大径部４１とフロントカバー１０の円筒部１１とリフレクタ２０の円筒部２２とに着目すると、大径部４１、円筒部１１、及び円筒部２２の順に直径が小さい。したがって、ホルダ４０とフロントカバー１０とリフレクタ２０とが組み付けられた組み付け状態では、外側に位置するホルダ４０の大径部４１と内側に位置するリフレクタ２０の円筒部２２との間にフロントカバー１０の円筒部１１が配置される。また、上述したホルダ４０の大径部４１と凸部４４，４６との間の空隙Ｇには、フロントカバー１０の円筒部１１が嵌入する。ここで、リフレクタ２０の外壁２０Ｂには、前後方向に延びる窪み部２４，２６が形成されているため、窪み部２４，２６にホルダの凸部４４，４６を挿通させながらリフレクタ２０をホルダ４０に組み付ければ、この凸部４４，４６がガイドとなり、精度よくリフレクタ２０とホルダ４０とが組み付けられる。このようにして、リフレクタ２０がホルダ４０の内部に収容されて嵌まり込む。 As shown in FIGS. 3 to 5, focusing on the large diameter portion 41 of the holder 40, the cylindrical portion 11 of the front cover 10, and the cylindrical portion 22 of the reflector 20, the large diameter portion 41, the cylindrical portion 11, and the cylindrical portion 22 The diameter is smaller in this order. Therefore, in the assembled state in which the holder 40, the front cover 10 and the reflector 20 are assembled, the front cover 10 is located between the large diameter portion 41 of the holder 40 located on the outside and the cylindrical portion 22 of the reflector 20 located on the inside. The cylindrical portion 11 is arranged. Further, the cylindrical portion 11 of the front cover 10 is fitted into the gap G between the large diameter portion 41 and the convex portions 44 and 46 of the holder 40 described above. Here, since the outer wall 20B of the reflector 20 is formed with recesses 24 and 26 extending in the front-rear direction, the reflector 20 is inserted into the holder 40 while the convex portions 44 and 46 of the holder are inserted through the recesses 24 and 26. When assembled, the convex portions 44 and 46 serve as guides, and the reflector 20 and the holder 40 can be assembled with high accuracy. In this way, the reflector 20 is accommodated and fitted inside the holder 40.
　ここで、上述のように、凸部４４，４６は、正面視において、窪み部２４，２６と概ね同一の外形かつ窪み部２４，２６よりも僅かに小さな寸法に形成されている。また、上述のように、凸部４４，４６は、リフレクタ２０よりも大きな寸法を有するホルダ４０の後壁４２Ｂから前方端の開口にわたって形成されているため、凸部４４，４６の前後方向の長さは、リフレクタ２０に形成される窪み部２４，２６の前後方向の長さよりも長い。したがって、上記組み付け状態では、窪み部２４，２６の前後方向における全長にわたって凸部４４，４６が窪み部２４，２６に嵌合する。本実施形態では、この組み付け状態において、リフレクタ２０の前方端の位置とホルダ４０の前方端の位置とが概ね一致する。すなわち、リフレクタ２０の開口２０ＦＯの前後方向における位置と、ホルダ４０の開口４０ＦＯの前後方向における位置とが概ね一致する。 Here, as described above, the convex portions 44 and 46 are formed to have substantially the same outer shape as the recessed portions 24 and 26 and slightly smaller in size than the recessed portions 24 and 26 in the front view. Further, as described above, since the convex portions 44 and 46 are formed from the rear wall 42B of the holder 40 having a size larger than that of the reflector 20 to the opening at the front end, the lengths of the convex portions 44 and 46 in the front-rear direction are formed. The length is longer than the length of the recesses 24, 26 formed in the reflector 20 in the front-rear direction. Therefore, in the assembled state, the convex portions 44, 46 fit into the recessed portions 24, 26 over the entire length of the recessed portions 24, 26 in the front-rear direction. In the present embodiment, the position of the front end of the reflector 20 and the position of the front end of the holder 40 substantially coincide with each other in this assembled state. That is, the position of the reflector 20 in the front-rear direction of the opening 20FO and the position of the holder 40 in the front-rear direction of the opening 40FO are substantially the same.
　なお、このような状態で、フロントカバー１０、リフレクタ２０、及びホルダ４０が、例えば図示しない留め具などを介して相互に固定されてもよい。 In such a state, the front cover 10, the reflector 20, and the holder 40 may be fixed to each other via, for example, fasteners (not shown).
　図１及び図５に示すように、光源部５０は、第１光源５１と、第２光源５２と、第１回路基板５３と、第２回路基板５４と、放熱板５５とを含んでいる。放熱板５５は、例えば熱伝導性に優れた例えばアルミニウムなどの金属から形成されている。本実施形態において、放熱板５５は略Ｌ字状に形成されており、前後方向に延在する第１部分５５Ａと、上下方向に延在する第２部分５５Ｂとを含んでいる。第１部分５５Ａと第２部分５５Ｂとの境界には、切り欠き５５Ｖが形成されている。 As shown in FIGS. 1 and 5, the light source unit 50 includes a first light source 51, a second light source 52, a first circuit board 53, a second circuit board 54, and a heat dissipation plate 55. The heat radiating plate 55 is made of, for example, a metal such as aluminum having excellent thermal conductivity. In the present embodiment, the heat radiating plate 55 is formed in a substantially L shape, and includes a first portion 55A extending in the front-rear direction and a second portion 55B extending in the vertical direction. A notch 55V is formed at the boundary between the first portion 55A and the second portion 55B.
　放熱板５５の第１部分５５Ａは、リフレクタ２０の連結部２８の内部空間２８Ｓにおける前方端近傍から、リフレクタ２０の貫通孔２９Ｖを通ってホルダ４０の後壁４２Ｂの近傍まで延びている。したがって、第２部分５５Ｂは、ホルダ４０の後壁４２Ｂに隣接する位置において、後壁４２Ｂと概ね平行に延びている。本実施形態では、第２部分５５Ｂ及び後壁４２Ｂのそれぞれにおける所定の箇所に互いに連通する不図示のネジ穴が形成されており、このネジ穴に挿通されたネジを介して、放熱板５５とホルダ４０とが相互に固定される。 The first portion 55A of the heat radiating plate 55 extends from the vicinity of the front end in the internal space 28S of the connecting portion 28 of the reflector 20 to the vicinity of the rear wall 42B of the holder 40 through the through hole 29V of the reflector 20. Therefore, the second portion 55B extends substantially parallel to the rear wall 42B at a position adjacent to the rear wall 42B of the holder 40. In the present embodiment, screw holes (not shown) communicating with each other are formed at predetermined positions in the second portion 55B and the rear wall 42B, respectively, and the heat radiating plate 55 and the heat radiating plate 55 are formed through the screws inserted into the screw holes. The holder 40 and the holder 40 are fixed to each other.
　第１部分５５Ａの上面には第１回路基板５３が固定されている。この第１回路基板５３の一部は連結部２８の内部空間２８Ｓ内に延在している。具体的には、第１回路基板５３は、連結部２８の内部空間２８Ｓにおける後方端近傍から貫通孔２９Ｖを通って第１部分５５Ａの後方端近傍まで延びている。つまり、本実施形態では、内部空間２８Ｓ内における放熱板５５の前後方向に沿った延在長さが、内部空間２８Ｓ内における第１回路基板５３の前後方向に沿った延在長さよりも長い。第１光源５１は、第１回路基板５３の上面に配置されており、第１回路基板５３に形成された回路に接続されている。第１光源５１の上方には、リフレクタ２０の上記第１反射面２１Ｌが配置されている。本実施形態では、この回路に接続される不図示の配線が、放熱板５５の切り欠き５５Ｖ及びホルダ４０の後壁４２Ｂの貫通孔４２Ｖを通って車両用前照灯１の外部に導出される。したがって、この配線及び第１回路基板５３の回路を介して第１光源５１に電力が供給される。 The first circuit board 53 is fixed on the upper surface of the first portion 55A. A part of the first circuit board 53 extends in the internal space 28S of the connecting portion 28. Specifically, the first circuit board 53 extends from the vicinity of the rear end in the internal space 28S of the connecting portion 28 to the vicinity of the rear end of the first portion 55A through the through hole 29V. That is, in the present embodiment, the extending length of the heat radiating plate 55 in the internal space 28S along the front-rear direction is longer than the extending length of the first circuit board 53 in the internal space 28S along the front-rear direction. The first light source 51 is arranged on the upper surface of the first circuit board 53, and is connected to the circuit formed on the first circuit board 53. The first reflecting surface 21L of the reflector 20 is arranged above the first light source 51. In the present embodiment, the wiring (not shown) connected to this circuit is led out to the outside of the vehicle headlight 1 through the notch 55V of the heat radiating plate 55 and the through hole 42V of the rear wall 42B of the holder 40. .. Therefore, power is supplied to the first light source 51 through this wiring and the circuit of the first circuit board 53.
　電力の供給を受けた第１光源５１は、上方に向かって光ＬＬを出射する。上記のように、第１光源５１の上方には第１反射面２１Ｌが配置されている。また、上記のように、第１反射面２１Ｌは、光を前方に、すなわち、ホルダ４０の開口４０ＦＯ及びリフレクタ２０の開口２０ＦＯに向かって反射して、反射した光の配光パターンをロービームの配光パターンに変化させるように形成される。したがって、光ＬＬは、例えば図６に示すようなロービームの配光パターンＰＬになるように車両用前照灯１の前方に出射する。なお、図６において配光パターンＰＬは太線で示されており、直線Ｓは水平線を示す。また、領域ＰＬＡ１は最も光強度が大きい領域であり、領域ＰＬＡ２、領域ＰＬＡ３の順に光強度が小さくなる。 The first light source 51, which has been supplied with electric power, emits light LL upward. As described above, the first reflecting surface 21L is arranged above the first light source 51. Further, as described above, the first reflecting surface 21L reflects light forward, that is, toward the opening 40FO of the holder 40 and the opening 20FO of the reflector 20, and arranges the light distribution pattern of the reflected light as a low beam. It is formed so as to change into an optical pattern. Therefore, the light LL is emitted in front of the vehicle headlight 1 so as to have a low beam light distribution pattern PL as shown in FIG. 6, for example. In FIG. 6, the light distribution pattern PL is indicated by a thick line, and the straight line S indicates a horizontal line. Further, the region PLA1 is a region having the highest light intensity, and the light intensity decreases in the order of the region PLA2 and the region PLA3.
　なお、電力の供給を受けた第１光源５１からは熱が発生するが、この熱は放熱板５５を介して効果的に放熱され得る。 Note that heat is generated from the first light source 51 that has been supplied with electric power, and this heat can be effectively dissipated through the heat radiating plate 55.
　第１部分５５Ａの下面には第２回路基板５４が固定されている。この第２回路基板５４の一部は連結部２８の内部空間２８Ｓ内に延在している。具体的には、第２回路基板５４は、連結部２８の内部空間２８Ｓにおける後方端近傍から貫通孔２９Ｖを通って第１部分５５Ａの後方端近傍まで延びている。つまり、本実施形態では、内部空間２８Ｓ内における放熱板５５の前後方向に沿った延在長さが、内部空間２８Ｓ内における第２回路基板５４の前後方向に沿った延在長さよりも長い。第２光源５２は、第２回路基板５４の下面に配置されており、第２回路基板５４に形成された回路に接続されている。第２光源５２の下方には、リフレクタ２０の上記第２反射面２１Ｈが配置されている。本実施形態では、この回路に接続される不図示の配線が、放熱板５５の切り欠き５５Ｖ及びホルダ４０の後壁４２Ｂの貫通孔４２Ｖを通って車両用前照灯１の外部に導出される。したがって、この配線及び第２回路基板５４の回路を介して第２光源５２に電力が供給される。 The second circuit board 54 is fixed to the lower surface of the first portion 55A. A part of the second circuit board 54 extends into the internal space 28S of the connecting portion 28. Specifically, the second circuit board 54 extends from the vicinity of the rear end in the internal space 28S of the connecting portion 28 to the vicinity of the rear end of the first portion 55A through the through hole 29V. That is, in the present embodiment, the extending length of the heat radiating plate 55 in the internal space 28S along the front-rear direction is longer than the extending length of the second circuit board 54 in the internal space 28S along the front-rear direction. The second light source 52 is arranged on the lower surface of the second circuit board 54, and is connected to the circuit formed on the second circuit board 54. The second reflecting surface 21H of the reflector 20 is arranged below the second light source 52. In the present embodiment, the wiring (not shown) connected to this circuit is led out to the outside of the vehicle headlight 1 through the notch 55V of the heat radiating plate 55 and the through hole 42V of the rear wall 42B of the holder 40. .. Therefore, power is supplied to the second light source 52 through this wiring and the circuit of the second circuit board 54.
　電力の供給を受けた第２光源５２は、下方に向かって光ＬＨを出射する。上記のように、第２光源５２の下方には第２反射面２１Ｈが配置されている。また、上記のように、第２反射面２１Ｈは、光を前方に、すなわち、ホルダ４０の開口４０ＦＯ及びリフレクタ２０の開口２０ＦＯに向かって反射して、反射した光の配光パターンをハイビームの配光パターンに変化させるように形成される。したがって、光ＬＨは、例えば図７に示すようなハイビームの配光パターンＰＨになるように車両用前照灯１の前方に出射する。なお、図７において、配光パターンＰＨは太線で示されており、直線Ｓは水平線を表している。この配光パターンＰＨにおいて、領域ＰＨＡ１は光強度が強い領域であり、領域ＰＨＡ２はＰＨＡ１よりも光強度が低い領域である。 The second light source 52, which has been supplied with electric power, emits light LH downward. As described above, the second reflecting surface 21H is arranged below the second light source 52. Further, as described above, the second reflecting surface 21H reflects the light forward, that is, toward the opening 40FO of the holder 40 and the opening 20FO of the reflector 20, and arranges the light distribution pattern of the reflected light as a high beam. It is formed so as to change into an optical pattern. Therefore, the light LH is emitted in front of the vehicle headlight 1 so as to have a high beam light distribution pattern PH as shown in FIG. 7, for example. In FIG. 7, the light distribution pattern PH is shown by a thick line, and the straight line S represents a horizontal line. In this light distribution pattern PH, the region PHA1 is a region having a strong light intensity, and the region PHA2 is a region having a lower light intensity than the PHA1.
　なお、電力の供給を受けた第２光源５２からは熱が発生するが、この熱は放熱板５５を介して効果的に放熱され得る。 Note that heat is generated from the second light source 52 that has been supplied with electric power, and this heat can be effectively dissipated through the heat radiating plate 55.
　以上説明したように、本実施形態の車両用前照灯１は、奥行方向である前後方向に延在して前方端に開口４０ＦＯが形成される筒状のホルダ４０と、ホルダ４０内に収容される光源５１，５２と、ホルダ４０内に収容され、光源５１，５２から出射する光ＬＬ，ＬＨを開口４０ＦＯに向かって反射するリフレクタ２０と、を備え、リフレクタ２０の外壁２０Ｂには、互いに対向する位置からリフレクタ２０の内側に向かって窪む１対の窪み部２４，２６が前後方向に沿って形成され、ホルダ４０には、互い対向する位置からホルダ４０の内側に向かって突出して前後方向に延在する１対の凸部４４，４６が設けられ、凸部４４，４６は、窪み部２４，２６の前後方向における全長にわたって窪み部２４，２６に嵌合するように、構成される。 As described above, the vehicle headlight 1 of the present embodiment is housed in a tubular holder 40 extending in the front-rear direction, which is the depth direction, and having an opening 40FO formed at the front end, and a holder 40. The light sources 51 and 52 are provided, and the reflector 20 housed in the holder 40 and reflecting the light LL and LH emitted from the light sources 51 and 52 toward the opening 40FO is provided, and the outer wall 20B of the reflector 20 is provided with each other. A pair of recesses 24, 26 that are recessed from opposite positions toward the inside of the reflector 20 are formed along the front-rear direction, and the holder 40 protrudes from the positions facing each other toward the inside of the holder 40 and is front-rear. A pair of convex portions 44, 46 extending in the direction are provided, and the convex portions 44, 46 are configured to fit into the recessed portions 24, 26 over the entire length of the recessed portions 24, 26 in the front-rear direction. ..
　このような車両用前照灯１によれば、窪み部２４，２６及び凸部４４，４６はいずれも前後方向に延びており、凸部４４，４６は窪み部２４，２６の前後方向における全長にわたって窪み部２４，２６に嵌合するため、車両の走行中などにリフレクタ２０がホルダ４０に対して振動しようとしても、リフレクタ２０のホルダ４０に対する振動が、窪み部２４，２６に嵌合する凸部４４，４６によって抑制され得る。また、この車両用前照灯１では、上記のような窪み部２４，２６と凸部４４，４６との嵌合構造が互いに対向する位置に構成されているため、車両の走行による振動等によってリフレクタ２０がホルダ４０に対して回動しようとしても、この回動が上記１対の嵌合構造によって抑制され得る。このため、この車両用前照灯１によれば、リフレクタ２０のがたつきが効果的に抑制され得る。 According to such a vehicle headlight 1, the recessed portions 24, 26 and the convex portions 44, 46 both extend in the front-rear direction, and the convex portions 44, 46 are the total lengths of the recessed portions 24, 26 in the front-rear direction. Since the reflector 20 is fitted into the recesses 24 and 26 over the entire range, even if the reflector 20 tries to vibrate with respect to the holder 40 while the vehicle is running, the vibration of the reflector 20 with respect to the holder 40 is convex to fit the recesses 24 and 26. It can be suppressed by parts 44, 46. Further, in the vehicle headlight 1, since the fitting structures of the recessed portions 24, 26 and the convex portions 44, 46 as described above are configured at positions facing each other, vibration due to the running of the vehicle or the like may occur. Even if the reflector 20 tries to rotate with respect to the holder 40, this rotation can be suppressed by the pair of fitting structures. Therefore, according to the vehicle headlight 1, the rattling of the reflector 20 can be effectively suppressed.
　特に、二輪自動車は四輪自動車に比べて走行中に大きく振動する傾向があるため、二輪自動車に搭載される車両用前照灯では、リフレクタのホルダに対するがたつきが大きくなり易い。したがって、車両用前照灯１を二輪自動車に搭載する場合、リフレクタ２０のがたつきを抑制する効果をより顕著に享受し得る。 In particular, since two-wheeled vehicles tend to vibrate more during driving than four-wheeled vehicles, the headlights for vehicles mounted on two-wheeled vehicles tend to have a large amount of rattling on the reflector holder. Therefore, when the vehicle headlight 1 is mounted on a two-wheeled vehicle, the effect of suppressing the rattling of the reflector 20 can be enjoyed more remarkably.
　また、この車両用前照灯１では、上記のように、リフレクタ２０の外壁２０Ｂには前後方向に延びる窪み部２４，２６が形成されている。したがって、窪み部２４，２６にホルダ４０の凸部４４，４６を挿通させながらリフレクタ２０をホルダ４０に組み付ければ、この凸部４４，４６がガイドとなり組み付け精度がより良好になり得る。このように組み付け精度がより良好になることで、例えば配光性能がより良好になり得る。 Further, in the vehicle headlight 1, as described above, the outer wall 20B of the reflector 20 is formed with recesses 24 and 26 extending in the front-rear direction. Therefore, if the reflector 20 is assembled to the holder 40 while the convex portions 44, 46 of the holder 40 are inserted into the recessed portions 24, 26, the convex portions 44, 46 serve as a guide, and the assembly accuracy can be improved. By improving the assembly accuracy in this way, for example, the light distribution performance can be improved.
　また、この車両用前照灯１では、上記のように、窪み部２４，２６が、前方側であるホルダ４０の開口４０ＦＯ側の端部、すなわち、リフレクタ２０の前方端である開口２０ＦＯまで延在するため、窪み部２４，２６が開口２０ＦＯまで延びていない場合に比べて窪み部２４，２６と凸部４４，４６とが広い範囲で嵌合する。このため、リフレクタのがたつきをより効果的に抑制し得る。 Further, in the vehicle headlight 1, as described above, the recessed portions 24 and 26 extend to the front end of the holder 40 on the opening 40FO side, that is, the opening 20FO which is the front end of the reflector 20. Therefore, the recessed portions 24, 26 and the convex portions 44, 46 are fitted in a wider range than in the case where the recessed portions 24, 26 do not extend to the opening 20FO. Therefore, the rattling of the reflector can be suppressed more effectively.
　また、この車両用前照灯１では、上記のように、窪み部２４，２６及び凸部４４，４６が左右方向に延在するため、特に上下方向の振動によるリフレクタ２０のがたつきをより効果的に抑制し得る。 Further, in the vehicle headlight 1, since the recessed portions 24, 26 and the convex portions 44, 46 extend in the left-right direction as described above, the reflector 20 rattles due to the vibration in the vertical direction. Can be effectively suppressed.
　また、この車両用前照灯１では、上記のように、窪み部２４，２６及び凸部４４，４６がリフレクタ２０の内側に行くに従って狭くなるように形成されるため、リフレクタ２０がホルダ４０に対して回動しようとする場合にリフレクタ２０の窪み部２４，２６がホルダ４０の凸部４４，４６に広い範囲で接触し得る。このため、リフレクタ２０の回動によるがたつきをより効果的に抑制し得る。 Further, in the vehicle headlight 1, as described above, the recessed portions 24, 26 and the convex portions 44, 46 are formed so as to become narrower toward the inside of the reflector 20, so that the reflector 20 is attached to the holder 40. On the other hand, the recessed portions 24 and 26 of the reflector 20 may come into contact with the convex portions 44 and 46 of the holder 40 in a wide range when trying to rotate. Therefore, rattling due to rotation of the reflector 20 can be suppressed more effectively.
　また、上記のように、この車両用前照灯１のリフレクタ２０は、正面視において前記窪み部を除いて円形の外形を有している。リフレクタが正面視において円形の外形を有する場合、リフレクタが正面視において非円形の場合に比べてホルダに対して回動し易い傾向にある。しかし、上記のように、車両用前照灯１では、窪み部２４，２６及び凸部４４，４６が正面視においてリフレクタの内側に行くに従って狭くなるように形成されるため、リフレクタ２０が円形であってもリフレクタ２０のがたつきが効果的に抑制され得る。 Further, as described above, the reflector 20 of the vehicle headlight 1 has a circular outer shape except for the recessed portion in the front view. When the reflector has a circular outer shape in the front view, it tends to rotate more easily with respect to the holder than in the case where the reflector has a non-circular shape in the front view. However, as described above, in the vehicle headlight 1, the recessed portions 24, 26 and the convex portions 44, 46 are formed so as to become narrower toward the inside of the reflector in the front view, so that the reflector 20 is circular. Even if there is, the rattling of the reflector 20 can be effectively suppressed.
　また、上記のように、この車両用前照灯１のリフレクタ２０の内壁は、窪み部２４，２６に対応する突出内壁２５，２７を含んでおり、これら１対の突出内壁２５，２７の間には、突出内壁２５，２７同士を連結する連結部２８が配置される。このような構成によれば、連結部２８が設けられず突出内壁２５，２７が互いに離間している場合に比べて、リフレクタ２０の撓みが抑制され得る。なお、連結部２８を設けることは必須ではない。 Further, as described above, the inner wall of the reflector 20 of the vehicle headlight 1 includes the protruding inner walls 25 and 27 corresponding to the recesses 24 and 26, and between these a pair of protruding inner walls 25 and 27. A connecting portion 28 for connecting the protruding inner walls 25 and 27 to each other is arranged in the. According to such a configuration, the bending of the reflector 20 can be suppressed as compared with the case where the connecting portion 28 is not provided and the protruding inner walls 25 and 27 are separated from each other. It is not essential to provide the connecting portion 28.
　また、上記のように、連結部２８は、上下方向における幅が開口４０ＦＯ側である前方に行くに従って狭くなるように形成される。このような構成により、リフレクタ２０の反射面２１Ｌ，２１Ｈで反射する光ＬＬ，ＬＨが連結部２８に当たることを効果的に抑制し得る。なお、必ずしも連結部２８の上下方向における幅が前方に行くに従って狭くなるように連結部２８を形成しなくてもよい。 Further, as described above, the connecting portion 28 is formed so that the width in the vertical direction becomes narrower toward the front, which is on the opening 40FO side. With such a configuration, it is possible to effectively suppress the light LL, LH reflected by the reflecting surfaces 21L, 21H of the reflector 20 from hitting the connecting portion 28. It is not always necessary to form the connecting portion 28 so that the width of the connecting portion 28 in the vertical direction becomes narrower toward the front.
　また、上記のように、この車両用前照灯１では、連結部２８に内部空間２８Ｓが形成されているため、回路基板５３，５４の一部を内部空間２８Ｓ内に配置することができる。このように回路基板５３，５４の一部を内部空間２８Ｓ内に配置することで、回路基板５３，５４の面積を広げ得る。なお、必ずしも回路基板５３，５４の一部を連結部２８の内部空間２８Ｓ内に配置しなくてもよい。 Further, as described above, in the vehicle headlight 1, since the internal space 28S is formed in the connecting portion 28, a part of the circuit boards 53 and 54 can be arranged in the internal space 28S. By arranging a part of the circuit boards 53 and 54 in the internal space 28S in this way, the area of the circuit boards 53 and 54 can be expanded. It should be noted that a part of the circuit boards 53 and 54 does not necessarily have to be arranged in the internal space 28S of the connecting portion 28.
　また、上記のように、この車両用前照灯１では、放熱板５５の一部が連結部２８の内部空間２８Ｓ内に配置され、内部空間２８Ｓ内における放熱板５５の前後方向に沿った延在長さは、内部空間２８Ｓ内における回路基板５３，５４の前後方向に沿った延在長さよりも長い。このような構成により、車両用灯具の内部において放熱板の面積を広げ得、光源から生じる熱の放熱効率を上げ得る。なお、内部空間２８Ｓ内における放熱板５５の前後方向に沿った延在長さが内部空間２８Ｓ内における回路基板５３，５４の前後方向に沿った延在長さよりも長い必要はない。また、放熱板５５を内部空間２８Ｓ外に配置してもよい。 Further, as described above, in the vehicle headlight 1, a part of the heat radiating plate 55 is arranged in the internal space 28S of the connecting portion 28, and extends along the front-rear direction of the heat radiating plate 55 in the internal space 28S. The existing length is longer than the extending length along the front-rear direction of the circuit boards 53 and 54 in the internal space 28S. With such a configuration, the area of the heat radiating plate can be expanded inside the vehicle lamp, and the heat radiating efficiency of the heat generated from the light source can be improved. It is not necessary that the extending length of the heat radiating plate 55 in the internal space 28S along the front-rear direction is longer than the extending length of the circuit boards 53 and 54 in the internal space 28S along the front-rear direction. Further, the heat radiating plate 55 may be arranged outside the internal space 28S.
　以上、本発明について実施形態を例に説明したが、本発明はこれに限定されるものではない。 Although the present invention has been described above by taking an embodiment as an example, the present invention is not limited thereto.
　例えば、上述の実施形態では、窪み部がリフレクタの開口まで延在する例を説明したが、このように窪み部がリフレクタの前方端まで延びていなくてもよい。すなわち、リフレクタ２０の外壁に前後方向に延びる窪み部が形成されていればよい。 For example, in the above-described embodiment, the example in which the recessed portion extends to the opening of the reflector has been described, but the recessed portion does not have to extend to the front end of the reflector in this way. That is, it is sufficient that the outer wall of the reflector 20 is formed with a recess extending in the front-rear direction.
　また、上述の実施形態では、窪み部及び凸部が左右方向に延在する例を説明したが、窪み部及び凸部は、左右方向に対して所定の角度だけ傾いてもよいし、あるいは、上下方向に延在してもよい。ただし、車両は他の方向に比べて上下方向に振動する傾向が強いため、窪み部及び凸部を左右方向に延在させることによって、リフレクタのがたつきをより効果的に抑制し得る。 Further, in the above-described embodiment, the example in which the recessed portion and the convex portion extend in the left-right direction has been described, but the recessed portion and the convex portion may be tilted by a predetermined angle with respect to the left-right direction, or It may extend in the vertical direction. However, since the vehicle tends to vibrate in the vertical direction as compared with other directions, the rattling of the reflector can be suppressed more effectively by extending the recessed portion and the convex portion in the left-right direction.
　また、上述の実施形態では、窪み部及び凸部がリフレクタの内側に行くに従って狭くなるように形成される例を説明したが、この構成は必須ではない。すなわち、窪み部及び凸部が例えば長方形であってもよい。 Further, in the above-described embodiment, an example in which the recessed portion and the convex portion are formed so as to become narrower toward the inside of the reflector has been described, but this configuration is not essential. That is, the recessed portion and the convex portion may be, for example, rectangular.
　また、上述の実施形態では、リフレクタが窪み部を除いて円形の外形を有する例を説明したが、リフレクタの外形は特に限定されない。また、フロントカバーの外形及びホルダの外形も円形に限定されない。 Further, in the above-described embodiment, an example in which the reflector has a circular outer shape excluding the recessed portion has been described, but the outer shape of the reflector is not particularly limited. Further, the outer shape of the front cover and the outer shape of the holder are not limited to a circular shape.
　また、上述の実施形態では、１対の凸部のそれぞれの突出長さがホルダの直径の概ね２５％の長さである例を説明した。換言すれば、１対の凸部のリフレクタの内側に向かう突出長さが、凸部が突出する方向におけるホルダの全幅の概ね２５％の長さである例を説明した。しかし、１対の凸部のそれぞれの突出長さは、これに限定されない。例えば、１対の凸部のそれぞれの突出長さは、ホルダの全幅の１０％以上４０％以下であってもよい。１対の凸部のそれぞれの突出長さがホルダの全幅の１０％以上あれば、例えば、リフレクタとホルダとが接触する領域を広くすることができ、リフレクタのがたつきを効果的に抑制し得る。一方、１対の凸部のそれぞれの突出長さがホルダの全幅の４０％以下であれば、例えば、上記光源部を収容するスペースなどを無理なく確保し得る。 Further, in the above-described embodiment, an example has been described in which the protruding length of each of the pair of convex portions is approximately 25% of the diameter of the holder. In other words, an example has been described in which the inwardly protruding length of the pair of convex reflectors is approximately 25% of the total width of the holder in the direction in which the convex portions protrude. However, the protruding length of each of the pair of convex portions is not limited to this. For example, the protruding length of each of the pair of convex portions may be 10% or more and 40% or less of the total width of the holder. If the protruding length of each of the pair of convex portions is 10% or more of the total width of the holder, for example, the area where the reflector and the holder contact can be widened, and the rattling of the reflector can be effectively suppressed. obtain. On the other hand, if the protruding length of each of the pair of convex portions is 40% or less of the total width of the holder, for example, a space for accommodating the light source portion can be reasonably secured.
　また、上述の実施形態では、車両用前照灯が２つの反射面を有するパラボラ型の車両用灯具である例を説明した。しかし、車両用灯具が、奥行方向に延在して当該奥行方向の一方側に開口が形成される筒状のホルダと、上記ホルダ内に収容される光源と、上記ホルダ内に収容され、上記光源から出射する光を上記開口に向かって反射するリフレクタと、を備え、上記リフレクタの外壁には、互いに対向する位置から上記リフレクタの内側に向かって窪む１対の窪み部が、上記ホルダの奥行方向に沿って形成され、上記ホルダには、互いに対向する位置から上記ホルダの内側に向かって突出して上記奥行方向に延在する１対の凸部が設けられ、上記凸部が、上記窪み部の上記奥行方向における全長にわたって上記窪み部に嵌合するように構成されるのであれば、車両用灯具は、２つの反射面を有するパラボラ型の車両用前照灯に限定されない。例えば、１つの反射面を有する車両用灯具であってもよいし、３つ以上の反射面を有する車両用灯具であってもよい。また、車両用灯具がテールランプ用やウインカーランプ用の灯具であってもよい。なお、車両用灯具が例えばウインカーランプ用の車両用灯具であり、リフレクタが光源から出射する光を左側又は右側に反射するように構成される場合、左右方向が上記奥行方向になり得る。 Further, in the above-described embodiment, an example in which the vehicle headlight is a parabolic type vehicle lighting device having two reflecting surfaces has been described. However, the vehicle lamps extend in the depth direction and have an opening formed on one side in the depth direction, a light source housed in the holder, and a light source housed in the holder. The holder includes a reflector that reflects light emitted from a light source toward the opening, and a pair of recesses that are recessed from positions facing each other toward the inside of the reflector on the outer wall of the reflector. The holder is provided with a pair of convex portions that are formed along the depth direction and project toward the inside of the holder from positions facing each other and extend in the depth direction, and the convex portions are formed in the recesses. Vehicle lighting fixtures are not limited to parabolic vehicle headlights having two reflective surfaces, as long as they are configured to fit into the recess over the entire length of the portion in the depth direction. For example, it may be a vehicle lamp having one reflective surface, or it may be a vehicle lamp having three or more reflective surfaces. Further, the vehicle lighting equipment may be a lighting equipment for a tail lamp or a blinker lamp. When the vehicle lamp is, for example, a vehicle lamp for a winker lamp and the reflector is configured to reflect the light emitted from the light source to the left or right, the left-right direction can be the depth direction.
　また、上述の実施形態では、車両用灯具が二輪自動車に搭載される例を説明したが、これに限られない。例えば、四輪自動車に搭載されてもよい。 Further, in the above-described embodiment, an example in which a vehicle lamp is mounted on a two-wheeled vehicle has been described, but the present invention is not limited to this. For example, it may be mounted on a four-wheeled vehicle.
　以上のように、本発明によれば、リフレクタのがたつきを抑制し得る車両用灯具が提供され、自動車の分野などにおいて利用可能である。 As described above, according to the present invention, a vehicle lamp that can suppress the rattling of the reflector is provided and can be used in the field of automobiles and the like.

Claims (9)

  1. 　奥行方向に延在して当該奥行方向の一方側に開口が形成される筒状のホルダと、
    　前記ホルダ内に収容される光源と、
    　前記ホルダ内に収容され、前記光源から出射する光を前記開口に向かって反射するリフレクタと、
    を備え、
    　前記リフレクタの外壁には、互いに対向する位置から前記リフレクタの内側に向かって窪む１対の窪み部が、前記奥行方向に沿って形成され、
    　前記ホルダには、互いに対向する位置から前記ホルダの内側に向かって突出して前記奥行方向に延在する１対の凸部が設けられ、
    　前記凸部は、前記窪み部の前記奥行方向における全長にわたって前記窪み部に嵌合する
    ことを特徴とする車両用灯具。     A tubular holder that extends in the depth direction and has an opening on one side in the depth direction.
    The light source housed in the holder and
    A reflector housed in the holder and reflecting light emitted from the light source toward the opening.
    With
    On the outer wall of the reflector, a pair of recesses recessed from positions facing each other toward the inside of the reflector are formed along the depth direction.
    The holder is provided with a pair of convex portions that project from positions facing each other toward the inside of the holder and extend in the depth direction.
    The convex portion is a vehicle lamp that fits into the recessed portion over the entire length of the recessed portion in the depth direction.
  2. 　前記窪み部は、前記リフレクタの前記開口側の端部まで延在する
    ことを特徴とする請求項１に記載の車両用灯具。     The vehicle lamp according to claim 1, wherein the recessed portion extends to an end portion of the reflector on the opening side.
  3. 　前記窪み部及び前記凸部は、前記奥行方向に垂直な左右方向に延在する
    ことを特徴とする請求項１又は２に記載の車両用灯具。     The vehicle lamp according to claim 1 or 2, wherein the recessed portion and the convex portion extend in the left-right direction perpendicular to the depth direction.
  4. 　前記窪み部及び前記凸部は、前記リフレクタの内側に行くに従って狭くなるように形成される
    ことを特徴とする請求項１から３のいずれか１項に記載の車両用灯具。     The vehicle lamp according to any one of claims 1 to 3, wherein the recessed portion and the convex portion are formed so as to become narrower toward the inside of the reflector.
  5. 　前記リフレクタは、前記開口側から見た正面視において前記窪み部を除いて円形の外形を有する
    ことを特徴とする請求項４に記載の車両用灯具。     The vehicle lamp according to claim 4, wherein the reflector has a circular outer shape excluding the recessed portion when viewed from the opening side.
  6. 　前記リフレクタの内壁は、前記窪み部に対応する突出内壁を含み、
    　１対の前記突出内壁の間には、当該突出内壁同士を連結する連結部が配置される
    ことを特徴とする請求項１から５のいずれか１項に記載の車両用灯具。     The inner wall of the reflector includes a protruding inner wall corresponding to the recess.
    The vehicle lamp according to any one of claims 1 to 5, wherein a connecting portion for connecting the protruding inner walls is arranged between the pair of the protruding inner walls.
  7. 　前記連結部は、前記連結部が前記突出内壁同士を連結する方向と垂直な方向における幅が前記開口側に行くに従って狭くなるように形成される
    ことを特徴とする請求項６に記載の車両用灯具。     The vehicle according to claim 6, wherein the connecting portion is formed so that the width in the direction perpendicular to the direction in which the connecting portion connects the protruding inner walls becomes narrower toward the opening side. Lighting equipment.
  8. 　前記光源に電力を供給する回路基板をさらに備え、
    　前記連結部の内側には内部空間が形成され、
    　前記回路基板の一部が前記内部空間内に配置される
    ことを特徴とする請求項６又は７に記載の車両用灯具。     A circuit board that supplies power to the light source is further provided.
    An internal space is formed inside the connecting portion.
    The vehicle lamp according to claim 6 or 7, wherein a part of the circuit board is arranged in the internal space.
  9. 　前記回路基板が固定される放熱板をさらに備え、
    　前記放熱板の一部は前記内部空間内に配置され、
    　前記内部空間内における前記放熱板の前記奥行方向に沿った延在長さは、前記内部空間内における前記回路基板の前記奥行方向に沿った延在長さよりも長い
    ことを特徴とする請求項８に記載の車両用灯具。

          Further provided with a heat radiating plate to which the circuit board is fixed,
    A part of the heat radiating plate is arranged in the internal space,
    8. The extending length of the heat radiating plate in the internal space along the depth direction is longer than the extending length of the circuit board in the internal space along the depth direction. Vehicle lighting equipment described in.
PCT/JP2020/032133 2019-08-27 2020-08-26 Vehicle lamp WO2021039826A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008262937A (en) * 2008-08-08 2008-10-30 Koito Mfg Co Ltd Light source module and lighting fixture for vehicle
JP2014103060A (en) * 2012-11-22 2014-06-05 Stanley Electric Co Ltd Vehicular lighting fixture
JP2014175225A (en) * 2013-03-11 2014-09-22 Stanley Electric Co Ltd Accessory lamp
JP2014235874A (en) * 2013-05-31 2014-12-15 パナソニック株式会社 Light source unit and vehicle headlamp using the same
KR20160074284A (en) * 2014-12-18 2016-06-28 에스엘 주식회사 A lamp apparatus for vehicles assembly and method for assembling the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008262937A (en) * 2008-08-08 2008-10-30 Koito Mfg Co Ltd Light source module and lighting fixture for vehicle
JP2014103060A (en) * 2012-11-22 2014-06-05 Stanley Electric Co Ltd Vehicular lighting fixture
JP2014175225A (en) * 2013-03-11 2014-09-22 Stanley Electric Co Ltd Accessory lamp
JP2014235874A (en) * 2013-05-31 2014-12-15 パナソニック株式会社 Light source unit and vehicle headlamp using the same
KR20160074284A (en) * 2014-12-18 2016-06-28 에스엘 주식회사 A lamp apparatus for vehicles assembly and method for assembling the same

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