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WO2024063090A1 - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
WO2024063090A1
WO2024063090A1 PCT/JP2023/034084 JP2023034084W WO2024063090A1 WO 2024063090 A1 WO2024063090 A1 WO 2024063090A1 JP 2023034084 W JP2023034084 W JP 2023034084W WO 2024063090 A1 WO2024063090 A1 WO 2024063090A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
opening
reflector
reflective surface
Prior art date
Application number
PCT/JP2023/034084
Other languages
French (fr)
Japanese (ja)
Inventor
浩之 山田
雄一 石井
Original Assignee
市光工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 市光工業株式会社 filed Critical 市光工業株式会社
Publication of WO2024063090A1 publication Critical patent/WO2024063090A1/en

Links

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
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a vehicle lamp.
  • a vehicle headlamp that includes a light source, a holder that holds the light source, and a reflector to which the holder is attached and is provided with a reflective surface that reflects light from the light source toward the front of the vehicle (for example, , Patent Document 1, etc.).
  • a hood having an opening through which light from the light source passes is disposed between the light source and the reflector.
  • the reflected light may become glare.
  • the present invention was made in consideration of the above, and aims to provide a vehicle lamp that can suppress the occurrence of glare.
  • a vehicle lamp according to the present invention includes a light source that emits light, and a reflector having a reflective surface that reflects the light from the light source forward to form a pattern, and the reflector includes the light source and the reflective surface. and a frame provided with an opening that allows light from the light source to pass through to the reflective surface side, and the frame has a frame that is arranged between the light source and the light source and is provided with an opening that allows light from the light source to pass through to the reflective surface side,
  • the rear portion of the inner surface, which is disposed at the rear, has a shape capable of reflecting light so as to diffuse the light.
  • the rear portion is curved so that it protrudes forward from both the left and right sides toward the center.
  • the reflector has a cross-sectional shape of the reflective surface in a plane parallel to the horizontal plane that is curved so as to protrude rearward from both sides in the left-right direction toward the center, and the curvature of the rear portion is , is smaller than the curvature of the cross-sectional shape of the reflective surface.
  • the rear portion protrudes forward in a parabolic shape when viewed from the light source side.
  • the frame has a slope portion arranged to be tilted upward toward the front, and the opening portion is provided in the slope portion.
  • the frame has a knurled portion that scatters the light from the light source in a portion along the opening on the opposing surface of the inclined portion that faces the light source.
  • FIG. 1 is a front view showing an example of a vehicle lamp according to the present embodiment.
  • FIG. 2 is a diagram schematically showing a cross section taken along line AA in FIG.
  • FIG. 3 is a diagram showing an example of a reflector.
  • FIG. 4 is an enlarged view of the main parts of the reflector shown in FIG. 3.
  • FIG. 5 is an enlarged view of a part of the cross section of the reflector shown in FIG. 2.
  • the directions “front and back (front, rear), up and down (up and down), and left and right (left and right)” refer to the directions when the vehicle lamp is attached to the vehicle, and are the directions for the driver's seat. Shows the direction when looking straight ahead while sitting.
  • the up-down direction is parallel to the vertical direction, and the left-right direction is assumed to be the horizontal direction.
  • FIG. 1 is a front view showing an example of a vehicle lamp 100 according to the present embodiment.
  • a vehicle lamp 100 shown in FIG. 1 is a so-called reflector type lamp used as a headlamp of a vehicle.
  • the vehicle lamp 100 is attached, for example, to the left and right front portions of a vehicle.
  • a vehicle lamp 100 mounted on the front left side of a vehicle will be described as an example. Therefore, in the vehicle lamp 100, the right side in the left-right direction is the inside of the vehicle, and the left side in the left-right direction is the outside of the vehicle.
  • the vehicular lamp installed on the front right side of the vehicle may have a configuration that is symmetrical to the left and right with respect to the vehicular lamp 100.
  • the vehicle lamp 100 has a plurality of light source units U1 to U3.
  • the light source units U1 to U3 are arranged at the center in the left-right direction, and form, for example, a predetermined pattern in front of the vehicle.
  • the light source unit U1 forms a high beam pattern in front of the vehicle.
  • the light source unit U2 is part of a low beam pattern in front of the vehicle, and forms a diffusion pattern that is diffused in the left-right direction.
  • the light source unit U3 forms a part of the low beam pattern in front of the vehicle and includes a cutoff line.
  • FIG. 2 is a diagram schematically showing the AA cross section in FIG. 1. In FIG. 2, a part of the configuration is omitted.
  • the vehicle lamp 100 includes a light source 10, a reflector 20, a frame 23, and a holding portion 40.
  • the configuration of the light source unit U1 will be described below as an example, but the same explanation can be applied to the light source units U2 and U3.
  • the light source 10 is, for example, a semiconductor light source such as an LED.
  • the light source 10 has a light emitting surface 11 that emits light. When the vehicle lamp 100 is attached to a vehicle, the light emitting surface 11 is directed downward, for example, and is arranged parallel to a horizontal plane.
  • Light source 10 is attached to substrate 12 .
  • the substrate 12 is held by the holding part 40. Circuits and the like for supplying power, electric signals, etc. to the light source 10 are formed on the substrate 12 .
  • FIG. 3 is a diagram showing an example of the reflector 20.
  • FIG. 3 shows an example of the reflector 20 viewed from above.
  • FIG. 4 is an enlarged view of a main part of the reflector 20 shown in FIG. 3.
  • FIG. 5 is an enlarged view of a part of the cross section of the reflector 20 shown in FIG. 2.
  • FIG. 4 and 5 show the opening 34 of the reflector 20 and its vicinity.
  • the reflector 20 reflects the light from the light source 10 toward the front of the vehicle.
  • the reflector 20 is arranged below the light source 10.
  • the reflector 20 has a base portion 21, a curved portion 22, and a frame 23.
  • the base 21 supports the holding part 40.
  • the curved portion 22 extends downward from the base 21 and curves forward toward the tip to form a downwardly convex shape.
  • the curved portion 22 is formed with a reflective surface 22a and a knurled portion 22b.
  • the reflective surface 22a is divided into a plurality of segments, for example. The curvature of each segment of the reflective surface 22a can be individually set arbitrarily.
  • a predetermined pattern is formed in front of the vehicle by the light reflected toward the front of the vehicle by the reflective surface 22a.
  • the knurling portion 22b is arranged around the reflective surface 22a. The knurling portion 22b scatters light.
  • the reflector 20 is provided, for example, as a single member for each of the light source units U1 to U3, but is not limited to this, and may be provided separately for at least one of the light source units U1 to U3.
  • the frame 23 is disposed between the light source 10 and the reflecting surface 22a. In this embodiment, the frame 23 is disposed below the light source 10 and above the curved portion 22.
  • the frame 23 is, for example, plate-shaped, and protrudes forward from the base 21 along the substrate 12.
  • the frame 23 has a first slope portion (slope portion) 31, a step portion 32, and a second slope portion 33.
  • the first inclined portion 31 extends forward from the base 21.
  • the first inclined portion 31 is arranged, for example, in an upwardly inclined state toward the front.
  • the step portion 32 is formed upward from the front end of the first inclined portion 31 .
  • the second inclined portion 33 extends forward from the top of the stepped portion 32.
  • the first inclined portion 31 blocks or reflects light from the light source 10 on the upper surface 31a facing the light source 10.
  • the frame 23 has an opening 34 formed in the first inclined portion 31. The opening 34 allows the light from the light source 10 to pass downward.
  • the first inclined portion 31 has an inner surface 35 that runs along the edge of the opening 34.
  • the inner surface 35 When viewed from the light source 10 side, the inner surface 35 has a left portion 35a, a right portion 35b, a front portion 35c, and a rear portion 35d.
  • the inner surface 35 reflects the light from the light source 10. Because the opening 34 is formed in the first inclined portion 31, the rear portion 35d is visible when the vehicle lamp 100 is viewed from the front (see line of sight E in FIG. 5, etc.).
  • the left portion 35a and the right portion 35b are formed along the front-rear direction.
  • the front portion 35c is curved or bent in a predetermined shape so that the light passing through the opening 34 does not reach the area protruding from the reflective surface 22a.
  • the rear portion 35d has a shape that can reflect and diffuse the light from the light source 10.
  • the rear portion 35d has a curved shape that protrudes forward from both sides in the left-right direction toward the center. With this configuration, the rear portion 35d can reflect the light from the light source 10 so as to diffuse it outward in the left-right direction.
  • the configuration of the rear portion 35d may be such that it protrudes forward in a parabolic shape when viewed from the light source 10 side.
  • the curvature of the rear portion 35d can be made smaller than the curvature of the cross-sectional shape of the reflective surface 22a of the reflector 20.
  • a knurled portion 37 is formed in a portion of the upper surface 31a of the first inclined portion 31 of the frame 23 along the opening 34.
  • the knurling portions 37 are provided, for example, on both sides of the opening 34 in the left-right direction and along the front thereof.
  • the knurling portion 37 scatters the light from the light source 10.
  • the holding unit 40 holds the light source 10.
  • the holding part 40 is supported by the base 21 of the reflector 20.
  • the holding part 40 has a base 41.
  • the base 41 has a plate shape and holds the substrate 12 and the base 21 .
  • the base 41 may be provided with ribs 42 that emit heat generated by the light source 10, as shown in FIG.
  • the light L1 that has reached the reflective surface 22a is reflected forward by the reflective surface 22a, and is irradiated in front of the vehicle to form a pattern.
  • the light source unit U1 forms a high beam pattern
  • the light source unit U2 forms a part of the low beam pattern (diffusion pattern)
  • the light source unit U3 forms a part of the low beam pattern (the part including the cutoff line). be done.
  • part of the light L2 (see FIG. 5) out of the light emitted from the light emitting surface 11 is reflected upward by the upper surface 31a of the first inclined portion 31.
  • a portion of the upwardly reflected light L2 is absorbed by the substrate 12 and the like, and the remainder is reflected again.
  • the light L2 is absorbed by being repeatedly reflected on the substrate 12, the upper surface 31a, and the like.
  • the knurling portion 37 is provided around the opening 34 on the upper surface 31a of the first inclined portion 31, so that the light reaching the periphery of the opening 34 is scattered. Therefore, it is possible to suppress the light from being emitted forward, and it is possible to prevent the light from becoming glare.
  • some of the light L3 (see FIG. 5) out of the light emitted from the light emitting surface 11 reaches the inner surface 35 of the frame 23.
  • the light L3 that has reached the inner surface 35 is reflected by the inner surface 35, reaches the reflective surface 22a, is reflected forward by the reflective surface 22a, and is irradiated to the front of the vehicle to form part of a pattern.
  • the shape of the rear portion may be designed to follow the horizontal cross-sectional shape of the reflective surface 22a of the reflector 20 (rear portion 35e shown by the dashed line in FIG. 4).
  • the rear portion 35e has a curved shape so as to protrude rearward from both sides in the left-right direction toward the center. With this shape, when light from the light source 10 reaches the rear portion 35e, it is reflected by the rear portion 35e so as to condense the light in the left-right direction and passes through the opening 34.
  • the light intensity may increase in unintended areas, that is, it may become glare or enter the light distribution pattern. There is a possibility that uneven light distribution may be formed.
  • the rear portion 35d has a shape that can reflect the light from the light source 10 so as to diffuse it, so when the light from the light source 10 reaches the rear portion 35d, the rear portion 35d It is reflected in a way that it is diffused. Therefore, when the light reflected by the rear portion 35d passes through the opening 34 and is reflected toward the front of the vehicle by the reflective surface 22a, the light may become glare or enter the light distribution pattern, causing uneven light distribution. can be suppressed from forming.
  • the vehicle lamp 100 includes the light source 10 that emits light, and the reflector 20 that has the reflective surface 22a that reflects the light from the light source 10 forward to form a pattern.
  • the reflector 20 has a frame 23 that is disposed between the light source 10 and the reflective surface 22a and is provided with an opening 34 that allows light from the light source 10 to pass toward the reflective surface 22a.
  • the light from the light source 10 can be reflected on the inner surface 35 along the edge of the opening, and the rear portion 35d of the inner surface 35 arranged at the rear has a shape that diffuses the light.
  • the rear portion 35d has a shape capable of reflecting light from the light source 10 so as to diffuse it, so that when the light from the light source 10 reaches the rear portion 35d, it is diffused by the rear portion 35d. reflected. Therefore, when the light reflected by the rear portion 35d passes through the opening 34 and is reflected toward the front of the vehicle by the reflective surface 22a, it is possible to suppress the light from becoming glare. Thereby, it is possible to provide the vehicle lamp 100 that can suppress the occurrence of glare.
  • the rear portion 35d has a curved shape that protrudes forward from both sides in the left-right direction toward the center. According to this configuration, light can be reflected so as to be diffused in the left-right direction at the rear portion 35d.
  • the reflector 20 has a cross-sectional shape of the reflective surface 22a in a plane parallel to the horizontal plane that is curved so as to protrude rearward from both sides in the left-right direction toward the center, and the rear portion
  • the curvature of 35d is smaller than the curvature of the cross-sectional shape of the reflective surface 22a. According to this configuration, light can be appropriately diffused in the rear portion 35d.
  • the rear portion 35d protrudes forward so as to form a parabola when viewed from the light source 10 side. This configuration allows the light to be appropriately diffused in the rear portion 35d.
  • the frame 23 has a first inclined portion 31 that is arranged in a state inclined upward toward the front, and the opening 34 is provided in the first inclined portion 31.
  • the frame 23 includes a knurled portion that scatters light from the light source 10 in a portion along the opening 34 on the upper surface 31a of the first inclined portion 31 facing the light source 10. It has 37. According to this configuration, since the light emitted from the light source 10 and reaching the portion along the opening 34 of the upper surface 31a is scattered by the knurling portion 37, it is possible to suppress the light from becoming glare.
  • the configuration for diffusing light in the rear portion 35d is such that the light is diffused in a shape that protrudes forward from both sides in the left-right direction to the center, specifically, in a parabolic shape when viewed from the light source 10 side.
  • the protruding shape has been described as an example, the present invention is not limited to this shape.
  • a light diffusing portion such as a grain may be formed in the rear portion 35d.
  • the rear portion 35d may be formed in a straight line along the left-right direction when viewed from the light source 10 side. Even with this configuration, the rear portion 35d can reflect the light arriving from the light source 10 in a diffused manner.
  • the configuration of the light source unit U1 was described as an example, and the same explanation could be made for the light source units U2 and U3, but the present invention is not limited thereto.
  • the rear portion 35d of the opening 34 may have a different configuration in at least one of the light source units U1, U2, and U3. Further, in one or two of the light source units U1, U2, and U3, the rear portion 35d does not have to be configured to be able to reflect light so as to diffuse it.
  • L1, L2, L3...Light, U1-U3...Light source unit 10...Light source, 11...Light emitting surface, 12...Substrate, 20...Reflector, 21...Base, 22...Curved part, 22a...Reflecting surface, 22b, 37... Knurling part, 23...Frame, 31...First slope part, 31a...Top surface, 32...Step part, 33...Second slope part, 34...Opening part, 35...Inner surface, 35a...Left part, 35b...Right side Part, 35c...front part, 35d, 35e...rear part, 40...holding part, 41...base, 100...vehicle lamp

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Provided is a vehicle lamp with which it is possible to suppress the occurrence of glare.　This vehicle lamp comprises: a light source that emits light; and a reflector that reflects the light from the light source forward, the reflector having a reflective surface on which a pattern is formed. The reflector has a frame disposed between the light source and the reflective surface, the frame being provided with an opening through which light from the light source passes to the reflective-surface side. The frame has a shape with which it is possible for light from the light source to be reflected on an inner-side surface that follows the opening edge of the opening, and for the light to be reflected in a diffuse manner by a rearward portion that is disposed on the rearward side of the inner-side surface.

Description

車両用灯具Vehicle lights
　本発明は、車両用灯具に関する。 The present invention relates to a vehicle lamp.
　光源と、光源を保持する保持部と、保持部が装着されて光源からの光を車両前方へ反射する反射面が設けられたリフレクタと、を備える車両用前照灯が知られている（例えば、特許文献１等参照）。 A vehicle headlamp is known that includes a light source, a holder that holds the light source, and a reflector to which the holder is attached and is provided with a reflective surface that reflects light from the light source toward the front of the vehicle (for example, , Patent Document 1, etc.).
特開２００９－１０４８１５号公報Japanese Patent Application Publication No. 2009-104815
　特許文献１に記載の車両用灯具において、光源とリフレクタとの間には、光源からの光を通過させる開口部を有するフードが配置される。光源からの光が開口部の側面で反射される場合、当該反射光がグレアとなる可能性がある。 In the vehicle lamp described in Patent Document 1, a hood having an opening through which light from the light source passes is disposed between the light source and the reflector. When light from a light source is reflected by the side surface of the opening, the reflected light may become glare.
　本発明は、上記に鑑みてなされたものであり、グレアの発生を抑制することが可能な車両用灯具を提供することを目的とする。 The present invention was made in consideration of the above, and aims to provide a vehicle lamp that can suppress the occurrence of glare.
　本発明に係る車両用灯具は、光を出射する光源と、前記光源からの光を前方に反射してパターンを形成する反射面を有するリフレクタとを備え、前記リフレクタは、前記光源と前記反射面との間に配置され、前記光源からの光を前記反射面側に通過させる開口部が設けられたフレームを有し、前記フレームは、前記開口部の開口縁に沿った内側面において前記光源からの光を反射可能であり、前記内側面のうち後方に配置される後方部分が光を拡散するように反射可能な形状を有する。 A vehicle lamp according to the present invention includes a light source that emits light, and a reflector having a reflective surface that reflects the light from the light source forward to form a pattern, and the reflector includes the light source and the reflective surface. and a frame provided with an opening that allows light from the light source to pass through to the reflective surface side, and the frame has a frame that is arranged between the light source and the light source and is provided with an opening that allows light from the light source to pass through to the reflective surface side, The rear portion of the inner surface, which is disposed at the rear, has a shape capable of reflecting light so as to diffuse the light.
　上記の車両用灯具において、前記後方部分は、左右方向の両側から中央部にかけて前方に突出するように湾曲した形状である。 In the above vehicle lamp, the rear portion is curved so that it protrudes forward from both the left and right sides toward the center.
　上記の車両用灯具において、前記リフレクタは、水平面に平行な平面における前記反射面の断面形状が左右方向の両側から中央部にかけて後方に突出するように湾曲した形状であり、前記後方部分の曲率は、前記反射面の断面形状における曲率よりも小さい。 In the above-described vehicle lamp, the reflector has a cross-sectional shape of the reflective surface in a plane parallel to the horizontal plane that is curved so as to protrude rearward from both sides in the left-right direction toward the center, and the curvature of the rear portion is , is smaller than the curvature of the cross-sectional shape of the reflective surface.
　上記の車両用灯具において、前記後方部分は、前記光源側から見て放物線状となるように前方に突出する。 In the above vehicle lamp, the rear portion protrudes forward in a parabolic shape when viewed from the light source side.
　上記の車両用灯具において、前記フレームは、前方に向けて上方に傾いた状態で配置される傾斜部を有し、前記開口部は、前記傾斜部に設けられる。 In the above-mentioned vehicle lamp, the frame has a slope portion arranged to be tilted upward toward the front, and the opening portion is provided in the slope portion.
　上記の車両用灯具において、前記フレームは、前記傾斜部のうち前記光源と対向する対向面において、前記開口部に沿った部分に、前記光源からの前記光を散乱させるローレット部を有する。 In the above-mentioned vehicle lamp, the frame has a knurled portion that scatters the light from the light source in a portion along the opening on the opposing surface of the inclined portion that faces the light source.
　本発明によれば、グレアの発生を抑制することが可能な車両用灯具を提供することができる。 According to the present invention, it is possible to provide a vehicle lamp that can suppress the occurrence of glare.
図１は、本実施形態に係る車両用灯具の一例を示す正面図である。FIG. 1 is a front view showing an example of a vehicle lamp according to the present embodiment. 図２は、図１におけるＡ－Ａ断面を模式的に示す図である。FIG. 2 is a diagram schematically showing a cross section taken along line AA in FIG. 図３は、リフレクタの一例を示す図である。FIG. 3 is a diagram showing an example of a reflector. 図４は、図３に示すリフレクタの要部を拡大して示す図である。FIG. 4 is an enlarged view of the main parts of the reflector shown in FIG. 3. 図５は、図２に示すリフレクタの断面の一部を拡大して示す図である。FIG. 5 is an enlarged view of a part of the cross section of the reflector shown in FIG. 2. FIG.
　以下、本発明に係る車両用灯具の実施形態を図面に基づいて説明する。なお、この実施形態によりこの発明が限定されるものではない。また、下記実施形態における構成要素には、当業者が置換可能かつ容易なもの、あるいは実質的に同一のものが含まれる。以下の説明において、前後（前方、後方）、上下（上方、下方）、左右（左方、右方）の各方向は、車両用灯具が車両に取り付けられた状態における方向であって、運転席に座った状態で正面を見た場合における方向を示す。なお、本実施形態では、上下方向は鉛直方向に平行であり、左右方向は水平方向であるとする。 Hereinafter, embodiments of a vehicle lamp according to the present invention will be described based on the drawings. Note that the present invention is not limited to this embodiment. Further, the components in the embodiments described below include those that can be easily replaced by those skilled in the art, or those that are substantially the same. In the following explanation, the directions "front and back (front, rear), up and down (up and down), and left and right (left and right)" refer to the directions when the vehicle lamp is attached to the vehicle, and are the directions for the driver's seat. Shows the direction when looking straight ahead while sitting. In addition, in this embodiment, the up-down direction is parallel to the vertical direction, and the left-right direction is assumed to be the horizontal direction.
　図１は、本実施形態に係る車両用灯具１００の一例を示す正面図である。図１に示す車両用灯具１００は、車両のヘッドランプとして用いられる、いわゆるリフレクタ型の灯具である。車両用灯具１００は、例えば車両の左右の前部に取り付けられる。以下、車両の前部左側に搭載される車両用灯具１００を例に挙げて説明する。したがって、車両用灯具１００において、左右方向の右側が車両内側であり、左右方向の左側が車両外側である。なお、車両の前部右側に取り付けられる車両用灯具については、車両用灯具１００に対して左右が対称の構成とすることができる。 FIG. 1 is a front view showing an example of a vehicle lamp 100 according to the present embodiment. A vehicle lamp 100 shown in FIG. 1 is a so-called reflector type lamp used as a headlamp of a vehicle. The vehicle lamp 100 is attached, for example, to the left and right front portions of a vehicle. Hereinafter, a vehicle lamp 100 mounted on the front left side of a vehicle will be described as an example. Therefore, in the vehicle lamp 100, the right side in the left-right direction is the inside of the vehicle, and the left side in the left-right direction is the outside of the vehicle. Note that the vehicular lamp installed on the front right side of the vehicle may have a configuration that is symmetrical to the left and right with respect to the vehicular lamp 100.
　図１に示すように、車両用灯具１００は、複数の光源ユニットＵ１～Ｕ３を有する。光源ユニットＵ１～Ｕ３は、左右方向の中央に配置され、例えば車両前方に所定のパターンを形成する。例えば、光源ユニットＵ１は、車両前方にハイビームパターンを形成する。光源ユニットＵ２は、車両前方にロービームパターンの一部であって、左右方向に拡散する拡散パターンを形成する。光源ユニットＵ３は、車両前方にロービームパターンの一部であって、カットオフラインを含む部分を形成する。 As shown in FIG. 1, the vehicle lamp 100 has a plurality of light source units U1 to U3. The light source units U1 to U3 are arranged at the center in the left-right direction, and form, for example, a predetermined pattern in front of the vehicle. For example, the light source unit U1 forms a high beam pattern in front of the vehicle. The light source unit U2 is part of a low beam pattern in front of the vehicle, and forms a diffusion pattern that is diffused in the left-right direction. The light source unit U3 forms a part of the low beam pattern in front of the vehicle and includes a cutoff line.
　図２は、図１におけるＡ－Ａ断面を模式的に示す図である。図２では、一部の構成を省略して示している。図１及び図２に示すように、車両用灯具１００は、光源１０と、リフレクタ２０と、フレーム２３と、保持部４０とを有する。以下、光源ユニットＵ１の構成を例に挙げて説明するが、光源ユニットＵ２、Ｕ３においても同様の説明が可能である。 FIG. 2 is a diagram schematically showing the AA cross section in FIG. 1. In FIG. 2, a part of the configuration is omitted. As shown in FIGS. 1 and 2, the vehicle lamp 100 includes a light source 10, a reflector 20, a frame 23, and a holding portion 40. The configuration of the light source unit U1 will be described below as an example, but the same explanation can be applied to the light source units U2 and U3.
　光源１０は、例えばＬＥＤ等の半導体型光源である。光源１０は、光を出射する発光面１１を有する。車両用灯具１００が車両に取り付けられた場合、発光面１１は例えば下方に向けられ、水平面に平行に配置される。光源１０は、基板１２に取り付けられる。基板１２は、保持部４０に保持される。基板１２には、光源１０に電力及び電気信号等を供給するための回路等が形成される。 The light source 10 is, for example, a semiconductor light source such as an LED. The light source 10 has a light emitting surface 11 that emits light. When the vehicle lamp 100 is attached to a vehicle, the light emitting surface 11 is directed downward, for example, and is arranged parallel to a horizontal plane. Light source 10 is attached to substrate 12 . The substrate 12 is held by the holding part 40. Circuits and the like for supplying power, electric signals, etc. to the light source 10 are formed on the substrate 12 .
　図３は、リフレクタ２０の一例を示す図である。図３は、リフレクタ２０を上方から見た状態の例を示している。図４は、図３に示すリフレクタ２０の要部を拡大して示す図である。図５は、図２に示すリフレクタ２０の断面の一部を拡大して示す図である。図４及び図５は、リフレクタ２０の開口部３４及びその近傍を示している。 FIG. 3 is a diagram showing an example of the reflector 20. FIG. 3 shows an example of the reflector 20 viewed from above. FIG. 4 is an enlarged view of a main part of the reflector 20 shown in FIG. 3. As shown in FIG. FIG. 5 is an enlarged view of a part of the cross section of the reflector 20 shown in FIG. 2. As shown in FIG. 4 and 5 show the opening 34 of the reflector 20 and its vicinity.
　リフレクタ２０は、光源１０からの光を車両前方に向けて反射する。リフレクタ２０は、光源１０の下方に配置される。リフレクタ２０は、基部２１と、湾曲部２２と、フレーム２３とを有する。基部２１は、保持部４０を支持する。 The reflector 20 reflects the light from the light source 10 toward the front of the vehicle. The reflector 20 is arranged below the light source 10. The reflector 20 has a base portion 21, a curved portion 22, and a frame 23. The base 21 supports the holding part 40.
　湾曲部２２は、基部２１から下方に向けて延びており、先端に向けて前方に湾曲して下に凸の形状を形成する。湾曲部２２には、反射面２２ａ及びローレット部２２ｂが形成される。反射面２２ａは、例えば複数のセグメントに区画される。反射面２２ａのセグメント毎の面の曲率については、個別に任意に設定することができる。反射面２２ａにより車両前方に反射される光により、車両前方に所定のパターンが形成される。ローレット部２２ｂは、反射面２２ａの周囲に配置される。ローレット部２２ｂは、光を散乱させる。 The curved portion 22 extends downward from the base 21 and curves forward toward the tip to form a downwardly convex shape. The curved portion 22 is formed with a reflective surface 22a and a knurled portion 22b. The reflective surface 22a is divided into a plurality of segments, for example. The curvature of each segment of the reflective surface 22a can be individually set arbitrarily. A predetermined pattern is formed in front of the vehicle by the light reflected toward the front of the vehicle by the reflective surface 22a. The knurling portion 22b is arranged around the reflective surface 22a. The knurling portion 22b scatters light.
　リフレクタ２０は、例えば各光源ユニットＵ１～Ｕ３について一部材で設けられるが、これに限定されず、光源ユニットＵ１～Ｕ３の少なくとも１つについて別個に設けられてもよい。 The reflector 20 is provided, for example, as a single member for each of the light source units U1 to U3, but is not limited to this, and may be provided separately for at least one of the light source units U1 to U3.
　フレーム２３は、光源１０と反射面２２ａとの間に配置される。本実施形態では、フレーム２３は、光源１０の下方であって湾曲部２２の上方に配置される。フレーム２３は、例えば板状であり、基部２１から基板１２に沿って前方に突出する。 The frame 23 is disposed between the light source 10 and the reflecting surface 22a. In this embodiment, the frame 23 is disposed below the light source 10 and above the curved portion 22. The frame 23 is, for example, plate-shaped, and protrudes forward from the base 21 along the substrate 12.
　フレーム２３は、第１傾斜部（傾斜部）３１と、段部３２と、第２傾斜部３３とを有する。第１傾斜部３１は、基部２１から前方に向けて延びている。第１傾斜部３１は、例えば前方に向けて上方に傾斜した状態で配置される。段部３２は、第１傾斜部３１の前側端部から上方に向けて形成される。第２傾斜部３３は、段部３２の上部から前方に向けて延びている。 The frame 23 has a first slope portion (slope portion) 31, a step portion 32, and a second slope portion 33. The first inclined portion 31 extends forward from the base 21. The first inclined portion 31 is arranged, for example, in an upwardly inclined state toward the front. The step portion 32 is formed upward from the front end of the first inclined portion 31 . The second inclined portion 33 extends forward from the top of the stepped portion 32.
　第１傾斜部３１は、光源１０に対向する上面３１ａにおいて、光源１０からの光を遮光又は反射させる。フレーム２３は、第１傾斜部３１に開口部３４が形成される。開口部３４は、光源１０からの光を下方に通過させる。 The first inclined portion 31 blocks or reflects light from the light source 10 on the upper surface 31a facing the light source 10. The frame 23 has an opening 34 formed in the first inclined portion 31. The opening 34 allows the light from the light source 10 to pass downward.
　第１傾斜部３１は、開口部３４の開口縁に沿った内側面３５を有する。内側面３５は、光源１０側から見て、左方部分３５ａ、右方部分３５ｂ、前方部分３５ｃ及び後方部分３５ｄを有する。光源１０からの光が内側面３５に到達した場合、内側面３５は、光源１０からの光を反射する。開口部３４が第１傾斜部３１に形成されることにより、前方から車両用灯具１００を見た場合、後方部分３５ｄが視認可能となっている（図５の視線Ｅ等参照）。 The first inclined portion 31 has an inner surface 35 that runs along the edge of the opening 34. When viewed from the light source 10 side, the inner surface 35 has a left portion 35a, a right portion 35b, a front portion 35c, and a rear portion 35d. When light from the light source 10 reaches the inner surface 35, the inner surface 35 reflects the light from the light source 10. Because the opening 34 is formed in the first inclined portion 31, the rear portion 35d is visible when the vehicle lamp 100 is viewed from the front (see line of sight E in FIG. 5, etc.).
　左方部分３５ａ及び右方部分３５ｂは、前後方向に沿って形成される。前方部分３５ｃは、開口部３４を通過する光が反射面２２ａからはみ出した領域に到達しないように所定の形状に湾曲又は屈曲された状態に形成される。 The left portion 35a and the right portion 35b are formed along the front-rear direction. The front portion 35c is curved or bent in a predetermined shape so that the light passing through the opening 34 does not reach the area protruding from the reflective surface 22a.
　後方部分３５ｄは、光源１０からの光を拡散するように反射可能な形状を有する。後方部分３５ｄは、左右方向の両側から中央部にかけて前方に突出するように湾曲した形状を有する。この構成により、後方部分３５ｄは、光源１０からの光を左右方向の外側に拡散するように反射可能である。後方部分３５ｄの構成として、具体的には、光源１０側から見て放物線状となるように前方に突出した形状とすることができる。 The rear portion 35d has a shape that can reflect and diffuse the light from the light source 10. The rear portion 35d has a curved shape that protrudes forward from both sides in the left-right direction toward the center. With this configuration, the rear portion 35d can reflect the light from the light source 10 so as to diffuse it outward in the left-right direction. Specifically, the configuration of the rear portion 35d may be such that it protrudes forward in a parabolic shape when viewed from the light source 10 side.
　後方部分３５ｄが湾曲した形状を有する場合、当該後方部分３５ｄの曲率は、リフレクタ２０の反射面２２ａの断面形状における曲率よりも小さくすることができる。 When the rear portion 35d has a curved shape, the curvature of the rear portion 35d can be made smaller than the curvature of the cross-sectional shape of the reflective surface 22a of the reflector 20.
　フレーム２３のうち第１傾斜部３１の上面３１ａにおいて、開口部３４に沿った部分には、ローレット部３７が形成される。ローレット部３７は、例えば開口部３４の左右方向の両側及び前方に沿った部分に設けられる。ローレット部３７は、光源１０からの光を散乱させる。 A knurled portion 37 is formed in a portion of the upper surface 31a of the first inclined portion 31 of the frame 23 along the opening 34. The knurling portions 37 are provided, for example, on both sides of the opening 34 in the left-right direction and along the front thereof. The knurling portion 37 scatters the light from the light source 10.
　保持部４０は、光源１０を保持する。保持部４０は、リフレクタ２０の基部２１に支持される。保持部４０は、ベース４１を有する。ベース４１は、板状であり、基板１２及び基部２１を保持する。なお、ベース４１には、図５に示すように、光源１０で生じた熱を放出するリブ４２が設けられてもよい。 The holding unit 40 holds the light source 10. The holding part 40 is supported by the base 21 of the reflector 20. The holding part 40 has a base 41. The base 41 has a plate shape and holds the substrate 12 and the base 21 . Note that the base 41 may be provided with ribs 42 that emit heat generated by the light source 10, as shown in FIG.
　次に、上記のように構成された車両用灯具１００の動作を説明する。車両用灯具１００における光源１０を点灯させることにより、発光面１１から光が出射される。発光面１１から出射される光のうち一部の光Ｌ１（図５参照）は、フレーム２３の開口部３４を通過し、反射面２２ａに到達する。 Next, the operation of the vehicle lamp 100 configured as described above will be explained. By lighting the light source 10 in the vehicle lamp 100, light is emitted from the light emitting surface 11. A part of the light L1 (see FIG. 5) out of the light emitted from the light emitting surface 11 passes through the opening 34 of the frame 23 and reaches the reflective surface 22a.
　反射面２２ａに到達した光Ｌ１は、反射面２２ａによって前方に反射され、車両前方に照射されてパターンを形成する。本実施形態では、光源ユニットＵ１によりハイビームパターンが形成され、光源ユニットＵ２によりロービームパターンの一部（拡散パターン）が形成され、光源ユニットＵ３によりロービームパターンの一部（カットオフラインを含む部分）が形成される。 The light L1 that has reached the reflective surface 22a is reflected forward by the reflective surface 22a, and is irradiated in front of the vehicle to form a pattern. In this embodiment, the light source unit U1 forms a high beam pattern, the light source unit U2 forms a part of the low beam pattern (diffusion pattern), and the light source unit U3 forms a part of the low beam pattern (the part including the cutoff line). be done.
　また、発光面１１から出射される光のうち一部の光Ｌ２（図５参照）は、第１傾斜部３１の上面３１ａにより上方に反射される。上方に反射された光Ｌ２は、基板１２等により一部が吸収され、残りが再度反射される。このように、光Ｌ２は、基板１２、上面３１ａ等で反射を繰り返すことにより吸収される。開口部３４の周囲で反射される光が開口部３４を通過した場合、当該光がグレアとなる場合がある。これに対して、本実施形態では、第１傾斜部３１の上面３１ａにおいて、開口部３４の周囲にローレット部３７が設けられるため、開口部３４の周囲に到達する光が散乱される。このため、光が前方に出射されることを抑制でき、当該光がグレアとなることを防止できる。 Further, part of the light L2 (see FIG. 5) out of the light emitted from the light emitting surface 11 is reflected upward by the upper surface 31a of the first inclined portion 31. A portion of the upwardly reflected light L2 is absorbed by the substrate 12 and the like, and the remainder is reflected again. In this way, the light L2 is absorbed by being repeatedly reflected on the substrate 12, the upper surface 31a, and the like. When light reflected around the opening 34 passes through the opening 34, the light may become glare. In contrast, in the present embodiment, the knurling portion 37 is provided around the opening 34 on the upper surface 31a of the first inclined portion 31, so that the light reaching the periphery of the opening 34 is scattered. Therefore, it is possible to suppress the light from being emitted forward, and it is possible to prevent the light from becoming glare.
　また、発光面１１から出射される光のうち一部の光Ｌ３（図５参照）は、フレーム２３の内側面３５に到達する。内側面３５に到達した光Ｌ３は、内側面３５で反射されて反射面２２ａに到達し、反射面２２ａによって前方に反射され、車両前方に照射されてパターンの一部を形成する。 Furthermore, some of the light L3 (see FIG. 5) out of the light emitted from the light emitting surface 11 reaches the inner surface 35 of the frame 23. The light L3 that has reached the inner surface 35 is reflected by the inner surface 35, reaches the reflective surface 22a, is reflected forward by the reflective surface 22a, and is irradiated to the front of the vehicle to form part of a pattern.
　ここで、開口部３４を設計する際、例えば後方部分の形状を、リフレクタ２０の反射面２２ａの水平断面形状に沿った形状に設計する場合がある（図４の一点鎖線で示す後方部分３５ｅ）。この場合、後方部分３５ｅが左右方向の両側から中央にかけて後方に突出するように湾曲した形状となる。この形状では、光源１０からの光が後方部分３５ｅに到達した場合、後方部分３５ｅにより左右方向に光を集光するように反射されて開口部３４を通過する。この光は、集光された状態で反射面２２ａにより反射されて車両前方に照射されるため、意図しない部分の光強度が高くなる、すなわち、グレアとなったり、配光パターン内に入射されて配光ムラが形成されたりする可能性がある。 Here, when designing the opening 34, for example, the shape of the rear portion may be designed to follow the horizontal cross-sectional shape of the reflective surface 22a of the reflector 20 (rear portion 35e shown by the dashed line in FIG. 4). . In this case, the rear portion 35e has a curved shape so as to protrude rearward from both sides in the left-right direction toward the center. With this shape, when light from the light source 10 reaches the rear portion 35e, it is reflected by the rear portion 35e so as to condense the light in the left-right direction and passes through the opening 34. Since this light is reflected by the reflective surface 22a in a condensed state and irradiated to the front of the vehicle, the light intensity may increase in unintended areas, that is, it may become glare or enter the light distribution pattern. There is a possibility that uneven light distribution may be formed.
　これに対して、本実施形態では、後方部分３５ｄが光源１０からの光を拡散するように反射可能な形状を有するため、光源１０からの光が後方部分３５ｄに到達した場合、後方部分３５ｄで拡散されるように反射される。このため、後方部分３５ｄで反射された光が開口部３４を通過して反射面２２ａで車両前方に反射された場合、当該光がグレアとなったり、配光パターン内に入射されて配光ムラが形成されたりすることを抑制できる。 In contrast, in the present embodiment, the rear portion 35d has a shape that can reflect the light from the light source 10 so as to diffuse it, so when the light from the light source 10 reaches the rear portion 35d, the rear portion 35d It is reflected in a way that it is diffused. Therefore, when the light reflected by the rear portion 35d passes through the opening 34 and is reflected toward the front of the vehicle by the reflective surface 22a, the light may become glare or enter the light distribution pattern, causing uneven light distribution. can be suppressed from forming.
　以上のように、本実施形態に係る車両用灯具１００は、光を出射する光源１０と、光源１０からの光を前方に反射してパターンを形成する反射面２２ａを有するリフレクタ２０とを備え、リフレクタ２０は、光源１０と反射面２２ａとの間に配置され、光源１０からの光を反射面２２ａ側に通過させる開口部３４が設けられたフレーム２３を有し、フレーム２３は、開口部３４の開口縁に沿った内側面３５において光源１０からの光を反射可能であり、内側面３５のうち後方に配置される後方部分３５ｄが光を拡散する形状を有する。 As described above, the vehicle lamp 100 according to the present embodiment includes the light source 10 that emits light, and the reflector 20 that has the reflective surface 22a that reflects the light from the light source 10 forward to form a pattern. The reflector 20 has a frame 23 that is disposed between the light source 10 and the reflective surface 22a and is provided with an opening 34 that allows light from the light source 10 to pass toward the reflective surface 22a. The light from the light source 10 can be reflected on the inner surface 35 along the edge of the opening, and the rear portion 35d of the inner surface 35 arranged at the rear has a shape that diffuses the light.
　この構成によれば、後方部分３５ｄが光源１０からの光を拡散するように反射可能な形状を有するため、光源１０からの光が後方部分３５ｄに到達した場合、後方部分３５ｄで拡散されるように反射される。このため、後方部分３５ｄで反射された光が開口部３４を通過して反射面２２ａで車両前方に反射された場合、当該光がグレアとなることを抑制できる。これにより、グレアの発生を抑制することが可能な車両用灯具１００を提供することができる。 According to this configuration, the rear portion 35d has a shape capable of reflecting light from the light source 10 so as to diffuse it, so that when the light from the light source 10 reaches the rear portion 35d, it is diffused by the rear portion 35d. reflected. Therefore, when the light reflected by the rear portion 35d passes through the opening 34 and is reflected toward the front of the vehicle by the reflective surface 22a, it is possible to suppress the light from becoming glare. Thereby, it is possible to provide the vehicle lamp 100 that can suppress the occurrence of glare.
　本実施形態に係る車両用灯具１００において、後方部分３５ｄは、左右方向の両側から中央部にかけて前方に突出するように湾曲した形状である。この構成によれば、後方部分３５ｄにおいて光を左右方向に拡散するように反射することができる。 In the vehicle lamp 100 according to the present embodiment, the rear portion 35d has a curved shape that protrudes forward from both sides in the left-right direction toward the center. According to this configuration, light can be reflected so as to be diffused in the left-right direction at the rear portion 35d.
　本実施形態に係る車両用灯具１００において、リフレクタ２０は、水平面に平行な平面における反射面２２ａの断面形状が左右方向の両側から中央部にかけて後方に突出するように湾曲した形状であり、後方部分３５ｄの曲率は、反射面２２ａの断面形状における曲率よりも小さい。この構成によれば、後方部分３５ｄにおいて光を適切に拡散させることができる。 In the vehicle lamp 100 according to the present embodiment, the reflector 20 has a cross-sectional shape of the reflective surface 22a in a plane parallel to the horizontal plane that is curved so as to protrude rearward from both sides in the left-right direction toward the center, and the rear portion The curvature of 35d is smaller than the curvature of the cross-sectional shape of the reflective surface 22a. According to this configuration, light can be appropriately diffused in the rear portion 35d.
　本実施形態に係る車両用灯具１００において、後方部分３５ｄは、光源１０側から見て放物線状となるように前方に突出する。この構成によれば、後方部分３５ｄにおいて光を適切に拡散させることができる。 In the vehicle lamp 100 according to this embodiment, the rear portion 35d protrudes forward so as to form a parabola when viewed from the light source 10 side. This configuration allows the light to be appropriately diffused in the rear portion 35d.
　本実施形態に係る車両用灯具１００において、フレーム２３は、前方に向けて上方に傾いた状態で配置される第１傾斜部３１を有し、開口部３４は、第１傾斜部３１に設けられる。この構成によれば、車両前方から見た場合に後方部分３５ｄが視認可能となる場合においても、後方部分３５ｄで反射される光がグレアとなることを抑制できる。 In the vehicle lamp 100 according to this embodiment, the frame 23 has a first inclined portion 31 that is arranged in a state inclined upward toward the front, and the opening 34 is provided in the first inclined portion 31. With this configuration, even if the rear portion 35d is visible when viewed from the front of the vehicle, it is possible to prevent the light reflected by the rear portion 35d from becoming glare.
　本実施形態に係る車両用灯具１００において、フレーム２３は、第１傾斜部３１のうち光源１０と対向する上面３１ａにおいて、開口部３４に沿った部分に、光源１０からの光を散乱させるローレット部３７を有する。この構成によれば、光源１０から出射されて上面３１ａの開口部３４に沿った部分に到達する光がローレット部３７により散乱されるため、当該光がグレアになることを抑制できる。 In the vehicle lamp 100 according to the present embodiment, the frame 23 includes a knurled portion that scatters light from the light source 10 in a portion along the opening 34 on the upper surface 31a of the first inclined portion 31 facing the light source 10. It has 37. According to this configuration, since the light emitted from the light source 10 and reaching the portion along the opening 34 of the upper surface 31a is scattered by the knurling portion 37, it is possible to suppress the light from becoming glare.
　本発明の技術範囲は上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で適宜変更を加えることができる。例えば、上記実施形態では、後方部分３５ｄにおける光を拡散する構成として、左右方向の両側から中央部にかけて前方に突出した形状、具体的には光源１０側から見て放物線状となるように前方に突出する形状を例に挙げて説明したが、この形状に限定されない。 The technical scope of the present invention is not limited to the above embodiments, and changes can be made as appropriate without departing from the spirit of the present invention. For example, in the above embodiment, the configuration for diffusing light in the rear portion 35d is such that the light is diffused in a shape that protrudes forward from both sides in the left-right direction to the center, specifically, in a parabolic shape when viewed from the light source 10 side. Although the protruding shape has been described as an example, the present invention is not limited to this shape.
　例えば、後方部分３５ｄにおいて光を拡散する構成として、上記形状に加えて、又は上記形状に代えて、後方部分３５ｄにシボ等の光拡散部が形成された構成であってもよい。 For example, in order to diffuse light in the rear portion 35d, in addition to or instead of the above shape, a light diffusing portion such as a grain may be formed in the rear portion 35d.
　また、後方部分３５ｄは、光源１０側から見て左右方向に沿って直線状に形成された構成であってもよい。この構成であっても、後方部分３５ｄは、光源１０から到達する光を拡散するように反射することができる。 Furthermore, the rear portion 35d may be formed in a straight line along the left-right direction when viewed from the light source 10 side. Even with this configuration, the rear portion 35d can reflect the light arriving from the light source 10 in a diffused manner.
　上記実施形態では、光源ユニットＵ１の構成を例に挙げて説明し、光源ユニットＵ２、Ｕ３についても同様の説明が可能としたが、これに限定されない。例えば、開口部３４の後方部分３５ｄの形状について、光源ユニットＵ１、Ｕ２、Ｕ３の少なくとも１つが異なる構成であってもよい。また、光源ユニットＵ１、Ｕ２、Ｕ３の１つ又は２つにおいて、後方部分３５ｄが光を拡散するように反射可能な構成でなくてもよい。 In the above embodiment, the configuration of the light source unit U1 was described as an example, and the same explanation could be made for the light source units U2 and U3, but the present invention is not limited thereto. For example, the rear portion 35d of the opening 34 may have a different configuration in at least one of the light source units U1, U2, and U3. Further, in one or two of the light source units U1, U2, and U3, the rear portion 35d does not have to be configured to be able to reflect light so as to diffuse it.
　Ｌ１，Ｌ２，Ｌ３…光、Ｕ１～Ｕ３…光源ユニット、１０…光源、１１…発光面、１２…基板、２０…リフレクタ、２１…基部、２２…湾曲部、２２ａ…反射面、２２ｂ，３７…ローレット部、２３…フレーム、３１…第１傾斜部、３１ａ…上面、３２…段部、３３…第２傾斜部、３４…開口部、３５…内側面、３５ａ…左方部分、３５ｂ…右方部分、３５ｃ…前方部分、３５ｄ，３５ｅ…後方部分、４０…保持部、４１…ベース、１００…車両用灯具 L1, L2, L3...Light, U1-U3...Light source unit, 10...Light source, 11...Light emitting surface, 12...Substrate, 20...Reflector, 21...Base, 22...Curved part, 22a...Reflecting surface, 22b, 37... Knurling part, 23...Frame, 31...First slope part, 31a...Top surface, 32...Step part, 33...Second slope part, 34...Opening part, 35...Inner surface, 35a...Left part, 35b...Right side Part, 35c...front part, 35d, 35e...rear part, 40...holding part, 41...base, 100...vehicle lamp

Claims (6)

  1. 　光を出射する光源と、
    　前記光源からの光を前方に反射してパターンを形成する反射面を有するリフレクタと
    　を備え、
    　前記リフレクタは、前記光源と前記反射面との間に配置され、前記光源からの光を前記反射面側に通過させる開口部が設けられたフレームを有し、
    　前記フレームは、前記開口部の開口縁に沿った内側面において前記光源からの光を反射可能であり、前記内側面のうち後方に配置される後方部分が光を拡散するように反射可能な形状を有する
    　車両用灯具。     a light source that emits light;
    a reflector having a reflective surface that reflects light from the light source forward to form a pattern;
    The reflector has a frame that is disposed between the light source and the reflective surface and is provided with an opening that allows light from the light source to pass to the reflective surface side,
    The frame has a shape in which an inner surface along an edge of the opening can reflect light from the light source, and a rear portion of the inner surface disposed at the rear can reflect the light to diffuse it. A vehicle light fixture with
  2. 　前記後方部分は、左右方向の両側から中央部にかけて前方に突出するように湾曲した形状である
    　請求項１に記載の車両用灯具。     The vehicular lamp according to claim 1 , wherein the rear portion has a curved shape protruding forward from both lateral sides toward a center portion in the left-right direction.
  3. 　前記リフレクタは、水平面に平行な平面における前記反射面の断面形状が左右方向の両側から中央部にかけて後方に突出するように湾曲した形状であり、
    　前記後方部分の曲率は、前記反射面の断面形状における曲率よりも小さい
    　請求項２に記載の車両用灯具。     The reflector has a cross-sectional shape of the reflective surface in a plane parallel to the horizontal plane that is curved so as to protrude rearward from both sides in the left-right direction toward the center,
    The vehicular lamp according to claim 2, wherein the curvature of the rear portion is smaller than the curvature of the cross-sectional shape of the reflective surface.
  4. 　前記後方部分は、前記光源側から見て放物線状となるように前方に突出する
    　請求項２に記載の車両用灯具。     The vehicular lamp according to claim 2, wherein the rear portion protrudes forward in a parabolic shape when viewed from the light source side.
  5. 　前記フレームは、前方に向けて上方に傾いた状態で配置される傾斜部を有し、
    　前記開口部は、前記傾斜部に設けられる
    　請求項１に記載の車両用灯具。     The frame has an inclined portion arranged to be inclined upward toward the front,
    The vehicular lamp according to claim 1, wherein the opening is provided in the inclined portion.
  6. 　前記フレームは、前記傾斜部のうち前記光源と対向する対向面において、前記開口部に沿った部分に、前記光源からの前記光を散乱させるローレット部を有する
    　請求項５に記載の車両用灯具。     The vehicular lamp according to claim 5, wherein the frame has a knurled portion that scatters the light from the light source in a portion along the opening on a surface of the inclined portion that faces the light source.
PCT/JP2023/034084 2022-09-22 2023-09-20 Vehicle lamp WO2024063090A1 (en)

Applications Claiming Priority (2)

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JP2022-151668 2022-09-22
JP2022151668A JP2024046345A (en) 2022-09-22 2022-09-22 Vehicle lamp fitting

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014175062A (en) * 2013-03-06 2014-09-22 Stanley Electric Co Ltd Headlight for vehicle
JP2016207485A (en) * 2015-04-23 2016-12-08 スタンレー電気株式会社 Vehicular lighting fixture
WO2020129345A1 (en) * 2018-12-21 2020-06-25 本田技研工業株式会社 Lighting device for ridden vehicle
JP2021072198A (en) * 2019-10-30 2021-05-06 市光工業株式会社 Vehicular headlight

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014175062A (en) * 2013-03-06 2014-09-22 Stanley Electric Co Ltd Headlight for vehicle
JP2016207485A (en) * 2015-04-23 2016-12-08 スタンレー電気株式会社 Vehicular lighting fixture
WO2020129345A1 (en) * 2018-12-21 2020-06-25 本田技研工業株式会社 Lighting device for ridden vehicle
JP2021072198A (en) * 2019-10-30 2021-05-06 市光工業株式会社 Vehicular headlight

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