WO2023182043A1 - Plastic reflector for vehicular light fixture - Google Patents

Plastic reflector for vehicular light fixture Download PDF

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Publication number
WO2023182043A1
WO2023182043A1 PCT/JP2023/009580 JP2023009580W WO2023182043A1 WO 2023182043 A1 WO2023182043 A1 WO 2023182043A1 JP 2023009580 W JP2023009580 W JP 2023009580W WO 2023182043 A1 WO2023182043 A1 WO 2023182043A1
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WIPO (PCT)
Prior art keywords
reflective
wall portion
reflector
continuous reinforcing
vehicle lamp
Prior art date
Application number
PCT/JP2023/009580
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French (fr)
Japanese (ja)
Inventor
和樹 森下
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株式会社小糸製作所
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Publication of WO2023182043A1 publication Critical patent/WO2023182043A1/en

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    • 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
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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

  • FIGS. 1 and 2 of Patent Document 1 show a headlamp that includes a resin reflector having a rectangular reflecting surface when viewed from the front, and one filament type headlamp bulb (bulb) arranged in the center of the resin reflector. Disclosed.
  • the resin reflecting mirror of Patent Document 1 has an upper wall portion that projects forward from the upper end of the reflecting portion and has a parabolic reflecting surface, and a lower wall portion that projects forward from the lower end of the reflecting portion. It has a wall portion and a reinforcing rib 3C formed on the outer circumferential surface of the back side of the reflective surface in the shape of a Japanese dancer's surface.
  • LEDs are used as light sources, and some LED headlamps use multiple LED light sources to diffuse and sufficiently irradiate LED light, which has low diffusivity and illuminance.
  • a device that displays a headlamp light distribution pattern by reflecting the emitted light by a reflector having reflective surfaces arranged on the left and right for each LED light source.
  • a reflector is horizontally long as a whole, and the upper and lower walls of the reflecting portion are also formed horizontally long.
  • the upper and lower wall parts of the horizontally elongated resin reflector When the upper and lower wall parts of the horizontally elongated resin reflector are removed from the mold after molding and cooled and hardened, they may cool and harden faster than the reflective part due to the difference in wall thickness. Heat shrinkage occurs in the reflective part, which hardens later than the upper wall part and lower wall part, and the front end of each of the upper wall part and lower wall part falls inward due to the heat shrinkage that occurs in the reflective part. deformation may occur. This deformation in which the upper and lower walls of the reflector fall inward causes deformation of a portion of the reflective surface, which has a particularly negative effect on the shape of the cut-off line of the displayed headlamp light distribution pattern. This becomes a problem.
  • the present application provides a vehicle lamp that is less likely to cause inward deformation in the upper and lower wall portions of the reflector during cooling and solidification, and that is less likely to have an adverse effect on the cut-off line shape of the headlamp light distribution pattern.
  • the purpose of this invention is to provide a resin reflector for use.
  • a reflecting part having a plurality of front reflecting areas arranged in a row, an upper wall part integrally formed at an upper end part of the reflecting part, and a lower wall part integrally molded at a lower end part of the reflecting part.
  • a continuous reinforcing rib is provided, which is integrally formed so as to straddle the outer peripheral surfaces of the lower wall portion, the reflective portion, and the upper wall portion.
  • the upper wall portion includes a rear wall portion that protrudes rearward from the upper end portion of the reflecting portion, and the continuous reinforcing rib is arranged such that the lower wall portion, the reflecting portion and the It is preferable that it is continuously and integrally formed so as to span over each outer circumferential surface of the rear wall portion of the upper end portion.
  • the resin reflector for a vehicle lamp it is desirable that at least one of the upper wall portion and the lower wall portion be formed thinner than the thickness of the reflective portion.
  • the continuous reinforcing rib be formed on each back surface of the plurality of reflective regions of the reflective portion. (Function) By forming continuous reinforcing ribs in each of the plurality of reflection areas of the reflection part, the upper wall part and the lower wall part become more difficult to bend even if heat shrinkage occurs in the reflection part of the reflector. .
  • the resin reflector for a vehicle lamp it is desirable that a plurality of the continuous reinforcing ribs be formed on each back surface of the plurality of reflective regions of the reflective portion.
  • the top and bottom walls of the reflector are less likely to be deformed by falling inward during cooling and solidification during injection from the mold, making it easier to cut the headlamp light distribution pattern. Off-line shape is less likely to be adversely affected.
  • the inward deformation that occurs in the upper and lower walls of the reflector is caused by the thinner upper and lower walls that cool and solidify first. This is likely to occur due to the effects of thermal contraction deformation of the thick-walled portion that hardens upon cooling, so according to the resin reflector for vehicle lamps of the present application, even if thermal contraction occurs in the thick-walled reflective portion of the reflector, By connecting the reflective portion to the upper wall portion and the lower wall portion with one continuous reinforcing rib, the upper wall portion and the lower wall portion become difficult to bend inward.
  • the continuous reinforcing ribs provided for each of the plurality of reflective areas of the reflective part prevent the upper wall part and the lower wall part from shrinking even if heat shrinkage occurs in the reflective part of the reflector. However, it becomes even more difficult to bend.
  • a plurality of continuous reinforcing ribs are provided for each of the plurality of reflection areas of the reflection part, so that even if heat shrinkage occurs in the reflection part of the reflector, the upper wall part And the lower wall portion becomes even more difficult to bend.
  • FIG. 1 is a front view of a resin reflector for a vehicle lamp according to a first embodiment of the present invention.
  • FIG. 1 is a reference perspective view of a resin reflector for a vehicle lamp according to a first embodiment of the present invention, seen from diagonally forward right and diagonally above right.
  • FIG. 1 is a reference perspective view of a resin reflector for a vehicle lamp according to a first embodiment of the present invention, seen from diagonally rear right and diagonally lower right.
  • 1 is a reference sectional view of a vehicle lamp including a resin reflector for a vehicle lamp according to a first embodiment of the present invention, taken along line II in FIG. 1; (a) A sectional view showing a resin reflector for a vehicle lamp according to a second embodiment of the present invention. (b) A sectional view showing a resin reflector for a vehicle lamp according to a third embodiment of the present invention.
  • FIGS. 1 to 4 a first embodiment of a resin reflector for a vehicle lamp according to the present invention will be described based on FIGS. 1 to 4.
  • a resin reflector 1 for a vehicle lamp is a reflector for a left headlight of a vehicle, and includes a reflecting portion 2 having a plurality of reflective areas 3 to 6 arranged and integrated on the left and right, and an upper end portion of the reflecting portion 2. 2a (see FIG. 4), and a lower wall portion 8 that is integrated with the lower end 2b (see FIG. 4) of the reflecting portion 2, and has an oblong shape extending left and right. is formed.
  • the reflection areas 3 to 6 are formed as four reflection areas partitioned by partition walls 9 to 11, respectively.
  • the reflective regions 3 to 6 are just one example, and the number of reflective areas listed on the left and right is not limited to four as long as there is a plurality of reflective areas.
  • the reflective regions 3 to 6 have mirror-like reflective surfaces 3a to 6a that reflect the light from the light source forward.
  • the upper surface of the lower wall portion 8 is provided with knurls 8a to 8d, which are formed of a large number of groove-like uneven portions extending back and forth and provided at positions corresponding to the front ends of the reflective surfaces 3a to 6a, respectively.
  • the partition walls 9 to 11 are also provided with knurlings 9a to 11a each consisting of a large number of groove-like uneven portions.
  • the upper wall portion 7 is provided with a light source substrate for each of the reflection areas 3 to 6 (in FIG. 4, only the light source substrate 12 of the reflection area 5 is shown.
  • the other light source substrates have the same configuration).
  • the light source board 12 is composed of a light source 13 made of an LED light emitting element or the like and a board 14, and the light source 13 is inserted into the light source mounting hole 5b with the light source 13 facing downward. 7a (outer peripheral surface).
  • the upper wall portion 7 of the resin reflector 1 for a vehicle lamp includes a rear wall extending rearward from the upper end portion 2a of each of the reflective regions 3 to 6 forming the reflective portion 2.
  • a section 7b is provided.
  • one continuous reinforcing rib 15 to 18 is provided at the left and right center of each of the reflective regions 3 to 6.
  • the continuous reinforcing ribs 15 to 18 are integrally formed so as to straddle the lower surface (outer peripheral surface) of the lower wall section 8, the back surface (outer peripheral surface) of each reflective area 3 to 6, and the lower surface (outer peripheral surface) of the upper wall section, respectively. It is formed.
  • the resin reflector 1 for a vehicle lamp is provided with a vertical aiming screw bracket 19, a left and right aiming screw bracket 20, and an aiming fulcrum bracket 21 extending rearward.
  • the resin reflector 1 for a vehicle lamp includes a vertical aiming screw screwed into an aiming nut (not shown) provided on a vertical aiming screw bracket 19 and a left and right aiming screw bracket 20, respectively. 24, left and right aiming screws (not shown), and an aiming fulcrum member 25 that is swingably attached to a spherical aiming fulcrum receiving part (not shown) provided in the aiming fulcrum bracket 21. Fixed.
  • the resin reflector 1 for a vehicle lamp is provided in a light chamber S inside a lamp body 22 and a front cover 23, and constitutes a part of a left vehicle headlamp that is a vehicle lamp. 24 and left and right aiming screws (not shown), the tilting is adjusted vertically and horizontally.
  • the wall thickness t1 of the reflective region 5 (the same applies to the reflective regions 3, 4, and 6) forming the reflective portion of the resin reflector 1 for a vehicle lamp is the same as that of the upper wall portion 7 and the lower wall portion 8.
  • the thicknesses of the upper wall portion 7 and the lower wall portion 8 may be different dimensions.
  • the resin reflector 1 for a vehicle lamp shown in FIGS. 1 to 4 when the resin reflector 1 for a vehicle lamp shown in FIGS. 1 to 4 is injected from a mold, the upper wall portion 7 and the lower wall portion 8 are cooled and solidified first, and the reflective portion 2 is thicker than these. (Reflection areas 3 to 6) are later cooled and solidified. 3 and 4, continuous reinforcing ribs 15 to 18 are provided on the back surfaces of reflective areas 3 to 6, respectively, in the resin reflector 1 for a vehicle lamp according to the present embodiment. 1, the left and right center portions 7d of the upper wall portion 7 of the resin reflector 1 for a vehicle lamp, shown in FIG. The left and right center portions 8f of the lower wall portion 8 are also curved in an upwardly convex manner, and the centers of the upper wall portion 7 and the lower wall portion 8 are both deformed so as to fall inward. cause problems.
  • continuous reinforcing ribs 15 to 18 that protrude rearward are provided on the back surfaces of each of the reflective areas 3 to 6, and the continuous reinforcing ribs 15 to 18 are arranged in a continuous manner as shown in FIG. It has the same form as the reinforcing rib 17.
  • the continuous reinforcing ribs 17 include a first rib 17a integrated with the lower surface 8e of the lower wall 8, a second rib 17b integrated with the back surface of the reflective area 5, and a lower surface 7c of the rear wall 7b of the upper wall 7. Since the third rib 17c is integrally formed into one continuous rib, the centers of the upper wall portion 7 and the lower wall portion 8 are difficult to deform inward.
  • the continuous reinforcing ribs 15 to 18 prevent the upper wall portion 7 from being deformed to fall down, thereby preventing the light source mounting holes 3b to 6b from being deformed, thereby preventing the mounted light source board 12 from shifting in the mounting position of the light source 13. .
  • the continuous reinforcing ribs 15 to 18 prevent the upper wall portion 7 and the lower wall portion 8 from deforming to a shape that deviates from the predetermined shape. Deformation of the deviated light distribution pattern is less likely to occur. As shown in FIG.
  • the light L1 emitted from the light source 13 is reflected in front of the front lens 23 by the reflective surface 5a of the reflective area 5 and the knurling 8c, and the reflected light L1 by the reflective surface 5a is directed to a predetermined area without deformation. Display the light distribution pattern of the shape.
  • the continuous reinforcing ribs 15 to 18 provided for each of the reflection areas 3 to 6 of the reflection part 2 do not necessarily have to be provided for each reflection area; From the viewpoint of achieving stronger prevention of deformation of the portion 7 and the lower wall portion 8, it is desirable to provide each reflection region 3 to 6 as much as possible.
  • the continuous reinforcing ribs 15 to 18 are not limited to being provided at one location for each reflective area as in this embodiment, but it is more desirable to provide a plurality of continuous reinforcing ribs for each reflective area.
  • the shape of the continuous reinforcing rib 35 is different from the continuous reinforcing ribs 15 to 18 in the first embodiment, and is also common to the resin reflector 1 for a vehicle lamp. It has the following configuration.
  • the continuous reinforcing rib 17 in the first embodiment has the third rib 17c provided only on the lower surface 7c of the rear wall portion 7b of the upper wall portion 7.
  • the continuous reinforcing rib 35 in the second embodiment has the third rib 35c not only on the lower surface 7c (outer peripheral surface) of the rear wall portion 7b, but also on the rear surface 7e (outer peripheral surface) and the upper surface 7f (outer peripheral surface). It differs from the continuous reinforcing rib 17 in that it is also provided integrally.
  • the third rib 35c is continuous and integrally formed with the first rib 35a integrated into the lower wall portion 8 and the second rib 35b provided on the back surface of the reflective area 5.
  • the continuous reinforcing rib 35 is different from the continuous reinforcing rib of the first embodiment when the reflective portion 2 is deformed by heat shrinkage. It is stronger than 15 to 18 and prevents deformation of the upper wall portion 7 and lower wall portion 8 from falling inward.
  • the upper wall section 7' of the reflecting section 2' is different from the upper wall section 7 in the first embodiment because it does not include the rear wall section 7b.
  • the shape of the continuous reinforcing rib 45 is different from the continuous reinforcing ribs 15 to 18, and has the same configuration as the resin reflector 1 for a vehicle lamp according to the first embodiment.
  • the continuous reinforcing rib 45 shown in FIG. 5 includes a first rib 45a integrated on the lower surface 8e' of the lower wall 8', a second rib 45b integrated on the back surface of the reflective area 5', and a rear wall.
  • the third rib 45c is integrated into the upper surface 7f' (outer peripheral surface) of the upper wall portion 7' which is not provided, and is formed continuously and integrally into one rib. According to the continuous reinforcing rib 45 of this embodiment, even if the resin reflector for a vehicle lamp does not have a rear wall part on the upper wall part, the third rib 45c is attached to the upper surface 7f' of the upper wall part 7'. By providing this, it is possible to prevent both the upper wall portion 7' and the lower wall portion 8 from collapsing inward.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Provided is a reflector having a reflection part that has a listed plurality of forward reflection regions. A plastic reflector (1) for a vehicular light fixture, the plastic reflector (1) having a reflection part (2) having a listed plurality of forward reflection regions (3-6), an upper wall part (7) integrally molded with an upper end section (2a) of the reflection part (2), and a lower wall part (8) integrally molded with a lower end section (2b) of the reflection part (2), wherein the plastic reflector (1) is characterized by having continuous reinforcement ribs (15-18) that are integrally molded so as to span the outer peripheral surfaces of the lower wall part (8), the reflection part (2), and the upper wall part (7).

Description

車両用灯具用樹脂製リフレクタResin reflector for vehicle lights
　羅列された複数の前方反射領域を有する反射部を有するリフレクタに関する技術。 A technology related to a reflector having a reflecting section having a plurality of front reflecting regions listed.
　特許文献１の図１及び図２には、前面視が矩形形状の反射面を有する樹脂反射鏡と、樹脂反射鏡の中央にフィラメント式のヘッドランプバルブ（電球）を１つ配置したヘッドランプが開示されている。 FIGS. 1 and 2 of Patent Document 1 show a headlamp that includes a resin reflector having a rectangular reflecting surface when viewed from the front, and one filament type headlamp bulb (bulb) arranged in the center of the resin reflector. Disclosed.
　特許文献１の樹脂反射鏡は、図２に示すように放物面形状の反射面を有する反射部の上端部から前方に突出する上壁部と、反射部の下端部から前方に突出する下壁部と、邦舞部面形状の反射面の裏側外周面に形成された補強リブ３Ｃとを有する。 As shown in FIG. 2, the resin reflecting mirror of Patent Document 1 has an upper wall portion that projects forward from the upper end of the reflecting portion and has a parabolic reflecting surface, and a lower wall portion that projects forward from the lower end of the reflecting portion. It has a wall portion and a reinforcing rib 3C formed on the outer circumferential surface of the back side of the reflective surface in the shape of a Japanese dancer's surface.
特開平１１－１８５５０３号公報Japanese Patent Application Publication No. 11-185503
　近年の自動車用ヘッドランプは、光源にＬＥＤを採用するものが多く、ＬＥＤヘッドランプの中には、拡散性や照度の低いＬＥＤの光を拡散かつ十分に照射するために、複数のＬＥＤ光源から出射した光をＬＥＤ光源毎に左右に羅列配置された反射面を有するリフレクタによって反射し、前照灯用配光パターンを表示するものがある。このようなリフレクタは、全体的に横長になり、反射部の上壁部及び下壁部も横長に形成される。 Many modern car headlamps use LEDs as light sources, and some LED headlamps use multiple LED light sources to diffuse and sufficiently irradiate LED light, which has low diffusivity and illuminance. There is a device that displays a headlamp light distribution pattern by reflecting the emitted light by a reflector having reflective surfaces arranged on the left and right for each LED light source. Such a reflector is horizontally long as a whole, and the upper and lower walls of the reflecting portion are also formed horizontally long.
　横長に形成された樹脂製リフレクタの上壁部及び下壁部は、成形後に金型から取り外されて冷却硬化する際に、肉厚の違いによって反射部よりも早く冷却硬化する場合がある。上壁部及び下壁部よりも遅れて硬化する反射部には、熱収縮が生じ、上壁部及び下壁部には、反射部に生じた熱収縮によってそれぞれの前端部が内側に倒れるような変形が発生する場合がある。このようにリフレクタの上壁部及び下壁部が内側に倒れる変形は、反射面の一部に変形を生じさせ、特に表示される前照灯配光パターンのカットオフラインの形状に悪影響を及ぼす点で問題となる。 When the upper and lower wall parts of the horizontally elongated resin reflector are removed from the mold after molding and cooled and hardened, they may cool and harden faster than the reflective part due to the difference in wall thickness. Heat shrinkage occurs in the reflective part, which hardens later than the upper wall part and lower wall part, and the front end of each of the upper wall part and lower wall part falls inward due to the heat shrinkage that occurs in the reflective part. deformation may occur. This deformation in which the upper and lower walls of the reflector fall inward causes deformation of a portion of the reflective surface, which has a particularly negative effect on the shape of the cut-off line of the displayed headlamp light distribution pattern. This becomes a problem.
　本願は、上記問題に鑑みて、冷却固化の際にリフレクタの上壁部及び下壁部において内側に倒れる変形を生じにくく、前照灯配光パターンのカットオフライン形状に悪影響の生じにくい車両用灯具用樹脂製リフレクタを提供するものである。 In view of the above-mentioned problems, the present application provides a vehicle lamp that is less likely to cause inward deformation in the upper and lower wall portions of the reflector during cooling and solidification, and that is less likely to have an adverse effect on the cut-off line shape of the headlamp light distribution pattern. The purpose of this invention is to provide a resin reflector for use.
　羅列された複数の前方反射領域を有する反射部と、前記反射部の上端部に一体に成形された上壁部と、前記反射部の下端部に一体に成形された下壁部と、を有する車両用灯具用樹脂製リフレクタにおいて、前記下壁部、前記反射部及び前記上壁部の各外周面上に跨がるように一体形成された、連続補強リブを設けた。 A reflecting part having a plurality of front reflecting areas arranged in a row, an upper wall part integrally formed at an upper end part of the reflecting part, and a lower wall part integrally molded at a lower end part of the reflecting part. In the resin reflector for a vehicle lamp, a continuous reinforcing rib is provided, which is integrally formed so as to straddle the outer peripheral surfaces of the lower wall portion, the reflective portion, and the upper wall portion.
　（作用）リフレクタの下壁部及び下壁部の外周壁に設けた補強リブを反射部外周面の補強リブで繋ぐことで連続補強リブとすることにより、金型からの射出時において、リフレクタの反射部に熱収縮が発生しても、上壁部及び下壁部が、内側に曲げられにくくなる。 (Function) By connecting the reinforcing ribs provided on the lower wall of the reflector and the outer circumferential wall of the lower wall with the reinforcing ribs on the outer circumferential surface of the reflector to form a continuous reinforcing rib, the reflector can be easily removed during injection from the mold. Even if thermal contraction occurs in the reflective portion, the upper wall portion and the lower wall portion are less likely to be bent inward.
　また、車両用灯具用樹脂製リフレクタにおいて、前記上壁部は、前記反射部の上端部から後方に突出する後壁部を備え、前記連続補強リブが、前記下壁部、前記反射部及び前記上端部の後壁部の各外周面上に跨がるように連続一体形成されることが望ましい。 Further, in the resin reflector for a vehicle lamp, the upper wall portion includes a rear wall portion that protrudes rearward from the upper end portion of the reflecting portion, and the continuous reinforcing rib is arranged such that the lower wall portion, the reflecting portion and the It is preferable that it is continuously and integrally formed so as to span over each outer circumferential surface of the rear wall portion of the upper end portion.
　（作用）上壁部に後壁部を設け、下壁部、反射部に連続する連続補強リブを後壁部の外周まで一体に連続形成することにより、リフレクタの反射部に熱収縮が発生しても、上壁部及び下壁部が、更に曲げられにくくなる。 (Function) By providing a rear wall part on the upper wall part and integrally and continuously forming continuous reinforcing ribs continuous to the lower wall part and the reflective part to the outer periphery of the rear wall part, heat shrinkage occurs in the reflective part of the reflector. However, the upper wall portion and the lower wall portion become even more difficult to bend.
　また、車両用灯具用樹脂製リフレクタにおいて、前記上壁部及び下壁部のうち少なくとも一方の肉厚が、前記反射部の肉厚よりも薄く形成されることが望ましい。 Furthermore, in the resin reflector for a vehicle lamp, it is desirable that at least one of the upper wall portion and the lower wall portion be formed thinner than the thickness of the reflective portion.
　（作用）リフレクタの反射部に生じる熱収縮変形によって上壁部及び下壁部に生じる内側への変形は、上壁部及び下壁部が反射部よりも薄肉に形成される場合に最も発生しやすくなるため、少なくとも一方が反射部よりも薄肉に形成された上壁部及び下壁部に設けた補強リブを反射部外周面の補強リブで繋ぐことで連続補強リブとすることにより、リフレクタの反射部に熱収縮が発生しても、上壁部及び下壁部が、内側に曲げられにくくなる。 (Function) Inward deformation that occurs in the upper and lower wall parts due to heat shrinkage deformation that occurs in the reflective part of the reflector occurs most when the upper and lower wall parts are formed thinner than the reflective part. In order to make the reflector easier to use, the reinforcement ribs provided on the upper and lower walls, at least one of which is thinner than the reflective part, are connected by the reinforcing ribs on the outer circumferential surface of the reflective part to form a continuous reinforcing rib. Even if thermal contraction occurs in the reflective portion, the upper wall portion and the lower wall portion are less likely to be bent inward.
　また、車両用灯具用樹脂製リフレクタにおいて、前記連続補強リブが、前記反射部の複数の反射領域の裏面毎に形成されることが望ましい。
（作用）連続補強リブが、反射部の複数の反射領域毎に形成されることにより、リフレクタの反射部に熱収縮が発生しても、上壁部及び下壁部が、更に曲げられにくくなる。 Further, in the resin reflector for a vehicle lamp, it is desirable that the continuous reinforcing rib be formed on each back surface of the plurality of reflective regions of the reflective portion.
(Function) By forming continuous reinforcing ribs in each of the plurality of reflection areas of the reflection part, the upper wall part and the lower wall part become more difficult to bend even if heat shrinkage occurs in the reflection part of the reflector. .
　また、車両用灯具用樹脂製リフレクタにおいて、前記連続補強リブは、前記反射部の複数の反射領域の裏面毎に複数ずつ形成されることが望ましい。 Furthermore, in the resin reflector for a vehicle lamp, it is desirable that a plurality of the continuous reinforcing ribs be formed on each back surface of the plurality of reflective regions of the reflective portion.
　（作用）連続補強リブが、反射部の複数の反射領域毎に複数ずつ形成されることにより、リフレクタの反射部に熱収縮が発生しても、上壁部及び下壁部が、更に曲げられにくくなる。 (Function) By forming a plurality of continuous reinforcing ribs for each of the plurality of reflection areas of the reflection part, even if heat shrinkage occurs in the reflection part of the reflector, the top wall part and the bottom wall part are not bent further. It becomes difficult.
　車両用灯具用樹脂製リフレクタによれば、金型からの射出時における冷却固化において、リフレクタの上壁部及び下壁部に内側に倒れる変形が生じにくくなるため、前照灯配光パターンのカットオフライン形状に悪影響が生じにくくなる。 According to the resin reflector for vehicle lamps, the top and bottom walls of the reflector are less likely to be deformed by falling inward during cooling and solidification during injection from the mold, making it easier to cut the headlamp light distribution pattern. Off-line shape is less likely to be adversely affected.
　また、金型からの射出時における冷却固化において、リフレクタの上壁部及び下壁部に生じる内側方向への変形は、薄肉状で先に冷却固化する上壁部及び下壁部が、後から冷却固化する厚肉部の熱収縮変形の影響を受けることによって生じやすくなるため、本願の車両用灯具用樹脂製リフレクタによれば、リフレクタの厚肉状の反射部に熱収縮が発生しても、反射部から上壁部及び下壁部まで連続形成された１本の連続補強リブで繋がれることにより、上壁部及び下壁部が、内側に曲げられにくくなる。 In addition, when the reflector is cooled and solidified during injection from a mold, the inward deformation that occurs in the upper and lower walls of the reflector is caused by the thinner upper and lower walls that cool and solidify first. This is likely to occur due to the effects of thermal contraction deformation of the thick-walled portion that hardens upon cooling, so according to the resin reflector for vehicle lamps of the present application, even if thermal contraction occurs in the thick-walled reflective portion of the reflector, By connecting the reflective portion to the upper wall portion and the lower wall portion with one continuous reinforcing rib, the upper wall portion and the lower wall portion become difficult to bend inward.
　また、車両用灯具用樹脂製リフレクタによれば、反射部の複数の反射領域毎に設けられた連続補強リブにより、リフレクタの反射部に熱収縮が発生しても、上壁部及び下壁部が、更に曲げられにくくなる。 In addition, according to the resin reflector for vehicle lamps, the continuous reinforcing ribs provided for each of the plurality of reflective areas of the reflective part prevent the upper wall part and the lower wall part from shrinking even if heat shrinkage occurs in the reflective part of the reflector. However, it becomes even more difficult to bend.
　また、車両用灯具用樹脂製リフレクタによれば、連続補強リブが、反射部の複数の反射領域毎に複数ずつ設けられることで、リフレクタの反射部に熱収縮が発生しても、上壁部及び下壁部が、更に曲げられにくくなる。 In addition, according to the resin reflector for a vehicle lamp, a plurality of continuous reinforcing ribs are provided for each of the plurality of reflection areas of the reflection part, so that even if heat shrinkage occurs in the reflection part of the reflector, the upper wall part And the lower wall portion becomes even more difficult to bend.
本願発明の第１の実施形態にかかる車両用灯具用樹脂製リフレクタの正面図。FIG. 1 is a front view of a resin reflector for a vehicle lamp according to a first embodiment of the present invention. 本願発明の第１の実施形態にかかる車両用灯具用樹脂製リフレクタを右斜め前方かつ右斜め上方から見た参考斜視図。FIG. 1 is a reference perspective view of a resin reflector for a vehicle lamp according to a first embodiment of the present invention, seen from diagonally forward right and diagonally above right. 本願発明の第１の実施形態にかかる車両用灯具用樹脂製リフレクタを右斜め後方かつ右斜め下方から見た参考斜視図。FIG. 1 is a reference perspective view of a resin reflector for a vehicle lamp according to a first embodiment of the present invention, seen from diagonally rear right and diagonally lower right. 本願発明の第１の実施形態にかかる車両用灯具用樹脂製リフレクタを含む車両用灯具について、図１のＩ－Ｉの位置で切断したと仮定した参考断面図。1 is a reference sectional view of a vehicle lamp including a resin reflector for a vehicle lamp according to a first embodiment of the present invention, taken along line II in FIG. 1; （ａ）本願発明の第２の実施形態にかかる車両用灯具用樹脂製リフレクタを示す断面図。（ｂ）本願発明の第３の実施形態にかかる車両用灯具用樹脂製リフレクタを示す断面図。(a) A sectional view showing a resin reflector for a vehicle lamp according to a second embodiment of the present invention. (b) A sectional view showing a resin reflector for a vehicle lamp according to a third embodiment of the present invention.
　以下、本願発明の車両用灯具用樹脂製リフレクタの第１の実施形態を図１から図４に基づいて説明する。各図においては、車両に対する各方向を（上方：下方：左方：右方：前方：後方＝Ｕｐ：Ｌｏ：Ｌｅ：Ｒｉ：Ｆｒ：Ｒｅ）として説明する。 Hereinafter, a first embodiment of a resin reflector for a vehicle lamp according to the present invention will be described based on FIGS. 1 to 4. In each figure, each direction with respect to the vehicle will be described as (upward: downward: leftward: rightward: forward: backward = Up: Lo: Le: Ri: Fr: Re).
　図１、図２は、一例として、本発明の車両用灯具用樹脂製リフレクタ１を示す。車両用灯具用樹脂製リフレクタ１は、車両の左前照灯用のリフレクタであって、左右に羅列かつ一体化された複数の反射領域３～６を有する反射部２と、反射部２の上端部２ａ（図４を参照）に一体に形成された上壁部７と、反射部２の下端部２ｂ（図４を参照）に一体化された下壁部８を有し、左右に延びる横長形状に形成される。 1 and 2 show, as an example, a resin reflector 1 for a vehicle lamp according to the present invention. A resin reflector 1 for a vehicle lamp is a reflector for a left headlight of a vehicle, and includes a reflecting portion 2 having a plurality of reflective areas 3 to 6 arranged and integrated on the left and right, and an upper end portion of the reflecting portion 2. 2a (see FIG. 4), and a lower wall portion 8 that is integrated with the lower end 2b (see FIG. 4) of the reflecting portion 2, and has an oblong shape extending left and right. is formed.
　図１，図２に示すように、反射領域３～６は、仕切壁９～１１にそれぞれ仕切られた、４つの反射領域として形成される。尚、４つの反射領域３～６は、一例であって、左右に羅列された反射領域は、複数であれば、４つに限られない。反射領域は３～６は、光源の光を前方に反射する鏡面状の反射面３ａ～６ａを有する。下壁部８の上面には、反射面３ａ～６ａの各前端部にそれぞれ対応する位置に設けられた、前後に延びる多数の溝状凹凸部からなるローレット８ａ～８ｄが設けられる。また、仕切壁９～１１にもまた、多数の溝状凹凸部からなるローレット９ａ～１１ａが設けられる。 As shown in FIGS. 1 and 2, the reflection areas 3 to 6 are formed as four reflection areas partitioned by partition walls 9 to 11, respectively. Note that the four reflective areas 3 to 6 are just one example, and the number of reflective areas listed on the left and right is not limited to four as long as there is a plurality of reflective areas. The reflective regions 3 to 6 have mirror-like reflective surfaces 3a to 6a that reflect the light from the light source forward. The upper surface of the lower wall portion 8 is provided with knurls 8a to 8d, which are formed of a large number of groove-like uneven portions extending back and forth and provided at positions corresponding to the front ends of the reflective surfaces 3a to 6a, respectively. In addition, the partition walls 9 to 11 are also provided with knurlings 9a to 11a each consisting of a large number of groove-like uneven portions.
　また、図２に示すように、上壁部７には、反射領域３～６毎に光源基板（図４にて、反射領域５の光源基板１２のみ図示。他の光源基板は、同一の構成を有するが、図示せず）を固定するための上下の貫通孔である光源取付孔３ｂ～６ｂが、それぞれ設けられる。図４に示すように、光源基板１２は、ＬＥＤ発光素子等からなる光源１３と基板１４によって構成され、光源１３を下向きにして光源取付孔５ｂに挿通させた状態で、上壁部７の上面７ａ（外周面）に固定される。 As shown in FIG. 2, the upper wall portion 7 is provided with a light source substrate for each of the reflection areas 3 to 6 (in FIG. 4, only the light source substrate 12 of the reflection area 5 is shown. The other light source substrates have the same configuration). (not shown) are provided with light source mounting holes 3b to 6b, which are upper and lower through holes, respectively. As shown in FIG. 4, the light source board 12 is composed of a light source 13 made of an LED light emitting element or the like and a board 14, and the light source 13 is inserted into the light source mounting hole 5b with the light source 13 facing downward. 7a (outer peripheral surface).
　また、図３に示すように、車両用灯具用樹脂製リフレクタ１の上壁部７には、反射部２を形成する反射領域３～６のそれぞれの上端部２ａから後方に延出する後壁部７ｂが設けられる。また、反射部の反射領域３～６の裏面（外周面）には、各反射領域３～６の左右の中央に、連続補強リブ１５～１８が、１つずつ設けられている。連続補強リブ１５～１８は、下壁部８の下面（外周面）、各反射領域３～６の裏面（外周面）及び上壁部の下面（外周面）にそれぞれ跨がるようにそれぞれ一体形成されている。 As shown in FIG. 3, the upper wall portion 7 of the resin reflector 1 for a vehicle lamp includes a rear wall extending rearward from the upper end portion 2a of each of the reflective regions 3 to 6 forming the reflective portion 2. A section 7b is provided. Further, on the back surface (outer peripheral surface) of the reflective regions 3 to 6 of the reflective section, one continuous reinforcing rib 15 to 18 is provided at the left and right center of each of the reflective regions 3 to 6. The continuous reinforcing ribs 15 to 18 are integrally formed so as to straddle the lower surface (outer peripheral surface) of the lower wall section 8, the back surface (outer peripheral surface) of each reflective area 3 to 6, and the lower surface (outer peripheral surface) of the upper wall section, respectively. It is formed.
　図３に示すように、車両用灯具用樹脂製リフレクタ１には、後方に延出形成された、上下エイミングスクリュー用ブラケット１９、左右エイミングスクリュー用ブラケット２０及びエイミング支点ブラケット２１が、設けられる。図４に示すように、車両用灯具用樹脂製リフレクタ１は、上下エイミングスクリュー用ブラケット１９及び左右エイミングスクリュー用ブラケット２０にそれぞれ設けられるエイミングナット（図示せず）に螺着された、上下エイミングスクリュー２４及び左右エイミングスクリュー（図示せず）と、エイミング支点ブラケット２１に設けられる球孔状のエイミング支点受部（図示せず）に揺動自在に取り付けられたエイミング支点部材２５により、ランプボディ２２に固定される。車両用灯具用樹脂製リフレクタ１は、ランプボディ２２と前面カバー２３の内側の灯室Ｓ内に設けられて、車両用灯具である左車両用前照灯の一部を構成し、上下エイミングスクリュー２４及び左右エイミングスクリュー（図示せず）により、上下左右に傾動調整される。 As shown in FIG. 3, the resin reflector 1 for a vehicle lamp is provided with a vertical aiming screw bracket 19, a left and right aiming screw bracket 20, and an aiming fulcrum bracket 21 extending rearward. As shown in FIG. 4, the resin reflector 1 for a vehicle lamp includes a vertical aiming screw screwed into an aiming nut (not shown) provided on a vertical aiming screw bracket 19 and a left and right aiming screw bracket 20, respectively. 24, left and right aiming screws (not shown), and an aiming fulcrum member 25 that is swingably attached to a spherical aiming fulcrum receiving part (not shown) provided in the aiming fulcrum bracket 21. Fixed. The resin reflector 1 for a vehicle lamp is provided in a light chamber S inside a lamp body 22 and a front cover 23, and constitutes a part of a left vehicle headlamp that is a vehicle lamp. 24 and left and right aiming screws (not shown), the tilting is adjusted vertically and horizontally.
　図４に示すように、車両用灯具用樹脂製リフレクタ１の反射部を形成する反射領域５（反射領域３，４，６も同様）の肉厚ｔ１は、上壁部７及び下壁部８のｊ各肉厚ｔ２よりも厚肉に形成される（ｔ１＞ｔ２とする）ことがより望ましいが、同じ厚さ（ｔ１＝ｔ２）としてもよい。また、上壁部７と下壁部８の肉厚は、異なる寸法としても良い。 As shown in FIG. 4, the wall thickness t1 of the reflective region 5 (the same applies to the reflective regions 3, 4, and 6) forming the reflective portion of the resin reflector 1 for a vehicle lamp is the same as that of the upper wall portion 7 and the lower wall portion 8. Although it is more desirable that the respective thicknesses of j be thicker than t2 (t1>t2), they may be the same thickness (t1=t2). Furthermore, the thicknesses of the upper wall portion 7 and the lower wall portion 8 may be different dimensions.
　尚、図１から図４に示す車両用灯具用樹脂製リフレクタ１を金型から射出すると、上壁部７及び下壁部８が、先に冷却固化し、これらよりも厚肉の反射部２（反射領域３～６）が、後から冷却固化する。図３及び図４に本実施形態の車両用灯具用樹脂製リフレクタ１には、反射領域３～６の裏面に、それぞれ連続補強リブ１５～１８を設けているが、仮に連続補強リブ１５～１８を設けていない場合、図１に示す、車両用灯具用樹脂製リフレクタ１の上壁部７の左右の中央部７ｄは、反射領域３～６に後から生じる熱収縮変形によって下向きに凸となるように湾曲し、下壁部８の左右の中央部８ｆもまた、上向きに凸となるように湾曲し、上壁部７及び下壁部８の中央が、共に内側に倒れるように変形するという問題を生じる。 Note that when the resin reflector 1 for a vehicle lamp shown in FIGS. 1 to 4 is injected from a mold, the upper wall portion 7 and the lower wall portion 8 are cooled and solidified first, and the reflective portion 2 is thicker than these. (Reflection areas 3 to 6) are later cooled and solidified. 3 and 4, continuous reinforcing ribs 15 to 18 are provided on the back surfaces of reflective areas 3 to 6, respectively, in the resin reflector 1 for a vehicle lamp according to the present embodiment. 1, the left and right center portions 7d of the upper wall portion 7 of the resin reflector 1 for a vehicle lamp, shown in FIG. The left and right center portions 8f of the lower wall portion 8 are also curved in an upwardly convex manner, and the centers of the upper wall portion 7 and the lower wall portion 8 are both deformed so as to fall inward. cause problems.
　車両用灯具用樹脂製リフレクタ１によれば、反射領域３～６の各裏面に、後方に突出する連続補強リブ１５～１８が設けられており、連続補強リブ１５～１８は、図４の連続補強リブ１７と同一の形態を有する。連続補強リブ１７は、下壁部８の下面８ｅに一体化された第１リブ１７ａ、反射領域５の裏面に一体化された第２リブ１７ｂ及び上壁部７の後壁部７ｂの下面７ｃに一体化された第３リブ１７ｃを１本に連続一体形成したリブであるため、上壁部７及び下壁部８の各中央を内側に変形させにくくする。連続補強リブ１５～１８は、上壁部７を倒れる変形を防止することにより、３ｂ～６ｂ光源取付孔の変形を防止するため、取り付けた光源基板１２の光源１３における取付位置のずれを防止する。 According to the resin reflector 1 for a vehicle lamp, continuous reinforcing ribs 15 to 18 that protrude rearward are provided on the back surfaces of each of the reflective areas 3 to 6, and the continuous reinforcing ribs 15 to 18 are arranged in a continuous manner as shown in FIG. It has the same form as the reinforcing rib 17. The continuous reinforcing ribs 17 include a first rib 17a integrated with the lower surface 8e of the lower wall 8, a second rib 17b integrated with the back surface of the reflective area 5, and a lower surface 7c of the rear wall 7b of the upper wall 7. Since the third rib 17c is integrally formed into one continuous rib, the centers of the upper wall portion 7 and the lower wall portion 8 are difficult to deform inward. The continuous reinforcing ribs 15 to 18 prevent the upper wall portion 7 from being deformed to fall down, thereby preventing the light source mounting holes 3b to 6b from being deformed, thereby preventing the mounted light source board 12 from shifting in the mounting position of the light source 13. .
　また、車両用灯具用樹脂製リフレクタ１の上壁部７及び下壁部８の変形は、反射領域３～６のカットオフライン構成面の変形を生じさせることにより、配光パターンを本来求められる形状から逸脱した形状に変形させるため、連続補強リブ１５～１８によって上壁部７及び下壁部８の変形を防止する、本実施形態の車両用灯具用樹脂製リフレクタ１によれば、所定形状から逸脱した配光パターンの変形が生じにくくなる。図４に示すように、光源１３から出射した光Ｌ１は、反射領域５の反射面５ａや、ローレット８ｃによって前面レンズ２３の前方に反射され、反射面５ａによる反射光Ｌ１は、変形のない所定形状の配光パターンを表示する。 Furthermore, deformation of the upper wall portion 7 and lower wall portion 8 of the resin reflector 1 for a vehicle lamp causes deformation of the cut-off line forming surfaces of the reflective regions 3 to 6, thereby changing the light distribution pattern into the originally desired shape. According to the resin reflector 1 for a vehicle lamp according to the present embodiment, the continuous reinforcing ribs 15 to 18 prevent the upper wall portion 7 and the lower wall portion 8 from deforming to a shape that deviates from the predetermined shape. Deformation of the deviated light distribution pattern is less likely to occur. As shown in FIG. 4, the light L1 emitted from the light source 13 is reflected in front of the front lens 23 by the reflective surface 5a of the reflective area 5 and the knurling 8c, and the reflected light L1 by the reflective surface 5a is directed to a predetermined area without deformation. Display the light distribution pattern of the shape.
　尚、本実施形態において、図３に示すように、反射部２の反射領域３～６毎に設けられた連続補強リブ１５～１８は、必ずしも反射領域毎に設けなくても良いが、上壁部７及び下壁部８のより強固な変形防止を実現する観点から、出来るだけ反射領域３～６毎に設けることが望ましい。また、連続補強リブ１５～１８は、本実施形態のように反射領域毎に１箇所ずつ設けることに限られず、各反射領域に複数ずつ連続補強リブを設けることが、より望ましい。 In addition, in this embodiment, as shown in FIG. 3, the continuous reinforcing ribs 15 to 18 provided for each of the reflection areas 3 to 6 of the reflection part 2 do not necessarily have to be provided for each reflection area; From the viewpoint of achieving stronger prevention of deformation of the portion 7 and the lower wall portion 8, it is desirable to provide each reflection region 3 to 6 as much as possible. Further, the continuous reinforcing ribs 15 to 18 are not limited to being provided at one location for each reflective area as in this embodiment, but it is more desirable to provide a plurality of continuous reinforcing ribs for each reflective area.
　次に、図５（ａ）により、本願の車両用灯具用樹脂製リフレクタの第２の実施形態をそれぞれ説明する。第２の実施形態における車両用灯具用樹脂製リフレクタ３１は、連続補強リブ３５の形態が、第１の実施形態における連続補強リブ１５～１８と異なる他、車両用灯具用樹脂製リフレクタ１と共通の構成を有する。 Next, a second embodiment of the resin reflector for a vehicle lamp of the present application will be described with reference to FIG. 5(a). In the resin reflector 31 for a vehicle lamp according to the second embodiment, the shape of the continuous reinforcing rib 35 is different from the continuous reinforcing ribs 15 to 18 in the first embodiment, and is also common to the resin reflector 1 for a vehicle lamp. It has the following configuration.
　具体的には、図４及び図５（ａ）に示す通り、第１の実施形態における連続補強リブ１７は、第３リブ１７ｃを上壁部７の後壁部７ｂの下面７ｃにのみ設けているが、第２の実施形態における連続補強リブ３５は、第３リブ３５ｃを、後壁部７ｂの下面７ｃ（外周面）のみならず、後面７ｅ（外周面）、上面７ｆ（外周面）にも一体に設けてある点で、連続補強リブ１７と異なる。第３リブ３５ｃは、下壁部８に一体化される第１リブ３５ａ及び反射領域５の裏面に設けられる第２リブ３５ｂと１本になるように連続一体形成される。連続補強リブ３５は、第３補強リブ３５ｃが、後壁部７ｂの後面７ｅ及び上面７ｆにも形成されることにより、反射部２の熱収縮変形時において、第１の実施形態の連続補強リブ１５～１８よりも強く、上壁部７及び下壁部８の内側に倒れる変形を防止する。 Specifically, as shown in FIGS. 4 and 5(a), the continuous reinforcing rib 17 in the first embodiment has the third rib 17c provided only on the lower surface 7c of the rear wall portion 7b of the upper wall portion 7. However, the continuous reinforcing rib 35 in the second embodiment has the third rib 35c not only on the lower surface 7c (outer peripheral surface) of the rear wall portion 7b, but also on the rear surface 7e (outer peripheral surface) and the upper surface 7f (outer peripheral surface). It differs from the continuous reinforcing rib 17 in that it is also provided integrally. The third rib 35c is continuous and integrally formed with the first rib 35a integrated into the lower wall portion 8 and the second rib 35b provided on the back surface of the reflective area 5. Since the third reinforcing rib 35c is also formed on the rear surface 7e and the upper surface 7f of the rear wall portion 7b, the continuous reinforcing rib 35 is different from the continuous reinforcing rib of the first embodiment when the reflective portion 2 is deformed by heat shrinkage. It is stronger than 15 to 18 and prevents deformation of the upper wall portion 7 and lower wall portion 8 from falling inward.
　次に、図５（ｂ）により、本願の車両用灯具用樹脂製リフレクタの第３の実施形態をそれぞれ説明する。第３の実施形態における車両用灯具用樹脂製リフレクタ４１は、反射部２’の上壁部７’が、第１の実施形態における上壁部７と異なり、後壁部７ｂを備えていないため、連続補強リブ４５の形態が、連続補強リブ１５～１８と異なる他、第１の実施形態における車両用灯具用樹脂製リフレクタ１と共通の構成を有する。 Next, a third embodiment of the resin reflector for a vehicle lamp of the present application will be described with reference to FIG. 5(b). In the resin reflector 41 for a vehicle lamp according to the third embodiment, the upper wall section 7' of the reflecting section 2' is different from the upper wall section 7 in the first embodiment because it does not include the rear wall section 7b. , the shape of the continuous reinforcing rib 45 is different from the continuous reinforcing ribs 15 to 18, and has the same configuration as the resin reflector 1 for a vehicle lamp according to the first embodiment.
　図５に示す、連続補強リブ４５は、下壁部８’の下面８ｅ’に一体化された第１リブ４５ａ、反射領域５’の裏面に一体化された第２リブ４５ｂ及び後壁部を備えない上壁部７’の上面７ｆ’（外周面）に一体化された第３リブ４５ｃを１本に連続一体形成したリブである。本実施形態の連続補強リブ４５によれば、上壁部に後壁部を有さない車両用灯具用樹脂製リフレクタであっても、第３リブ４５ｃを上壁部７’の上面７ｆ’に設けることで、上壁部７’及び下壁部８が、共に内側に倒れる変形を防止することが出来る。 The continuous reinforcing rib 45 shown in FIG. 5 includes a first rib 45a integrated on the lower surface 8e' of the lower wall 8', a second rib 45b integrated on the back surface of the reflective area 5', and a rear wall. The third rib 45c is integrated into the upper surface 7f' (outer peripheral surface) of the upper wall portion 7' which is not provided, and is formed continuously and integrally into one rib. According to the continuous reinforcing rib 45 of this embodiment, even if the resin reflector for a vehicle lamp does not have a rear wall part on the upper wall part, the third rib 45c is attached to the upper surface 7f' of the upper wall part 7'. By providing this, it is possible to prevent both the upper wall portion 7' and the lower wall portion 8 from collapsing inward.
　本国際出願は、２０２２年３月２２日に出願された日本国特許出願である特願２０２２－０４５６７３号に基づく優先権を主張するものであり、当該日本国特許出願である特願２０２２－０４５６７３号の全内容は、本国際出願に援用される。 This international application claims priority based on Japanese patent application No. 2022-045673, which is a Japanese patent application filed on March 22, 2022. The entire contents of No. 1 are incorporated by reference into this international application.
　本発明の特定の実施の形態についての上記説明は、例示を目的として提示したものである。それらは、網羅的であったり、記載した形態そのままに本発明を制限したりすることを意図したものではない。数多くの変形や変更が、上記の記載内容に照らして可能であることは当業者に自明である。 The above descriptions of specific embodiments of the invention have been presented for purposes of illustration. They are not intended to be exhaustive or to limit the invention to the precise forms described. It will be obvious to those skilled in the art that many modifications and variations are possible in light of the above description.
１　　　　　　　　車両用灯具用樹脂製リフレクタ
２　　　　　　　　反射部
２ａ　　　　　　　上端部
２ｂ　　　　　　　下端部
３～６　　　　　　反射領域
３ａ～６ａ　　　　反射面
７　　　　　　　　上壁部
７ａ　　　　　　　上面
７ｂ　　　　　　　後壁部
７ｃ　　　　　　　下面
７ｅ　　　　　　　後面
７ｆ　　　　　　　上面
８　　　　　　　　下壁部
８ｅ　　　　　　下面
９～１１　　　　　仕切壁
１５～１８　　　　連続補強リブ
ｔ１　　　　　　　反射部の肉厚
ｔ２　　　　　　　上壁部及び下壁部の肉厚 1 Resin reflector 2 for vehicle lamps Reflector 2a Upper end 2b Lower end 3-6 Reflective area 3a-6a Reflective surface 7 Upper wall 7a Upper surface 7b Rear wall 7c Lower surface 7e Rear surface 7f Upper surface 8 Lower wall 8e Lower surface 9 ~11 Partition walls 15~18 Continuous reinforcing rib t1 Thickness of reflective part t2 Thickness of upper wall and lower wall

Claims (5)

  1. 　羅列された複数の前方反射領域を有する反射部と、前記反射部の上端部に一体に成形された上壁部と、前記反射部の下端部に一体に成形された下壁部と、を有する車両用灯具用樹脂製リフレクタにおいて、
    　前記下壁部、前記反射部及び前記上壁部の各外周面上に跨がるように一体形成された、連続補強リブを有することを特徴とする、車両用灯具用樹脂製リフレクタ。     A reflecting part having a plurality of front reflecting areas arranged in a row, an upper wall part integrally formed at an upper end part of the reflecting part, and a lower wall part integrally molded at a lower end part of the reflecting part. In resin reflectors for vehicle lights,
    A resin reflector for a vehicle lamp, characterized in that it has a continuous reinforcing rib that is integrally formed so as to straddle the outer peripheral surfaces of the lower wall part, the reflective part, and the upper wall part.
  2. 　前記上壁部は、前記反射部の上端部から後方に突出する後壁部を備え、
    　前記連続補強リブが、前記下壁部、前記反射部及び前記上端部の後壁部の各外周面上に跨がるように連続一体形成されたことを特徴とする、請求項１に記載の車両用灯具用樹脂製リフレクタ。     The upper wall portion includes a rear wall portion that protrudes rearward from an upper end portion of the reflective portion,
    2. The continuous reinforcing rib according to claim 1, wherein the continuous reinforcing rib is continuously and integrally formed so as to span over each outer circumferential surface of the lower wall portion, the reflective portion, and the rear wall portion of the upper end portion. Resin reflector for vehicle lighting.
  3. 　前記上壁部及び下壁部のうち少なくとも一方の肉厚が、前記反射部の肉厚よりも薄く形成されたことを特徴とする、請求項１または２に記載の車両用灯具用樹脂製リフレクタ。 The resin reflector for a vehicle lamp according to claim 1 or 2, wherein the thickness of at least one of the upper wall portion and the lower wall portion is formed to be thinner than the thickness of the reflecting portion. .
  4. 　前記連続補強リブが、前記反射部の複数の反射領域の裏面毎に形成されたことを特徴とする、請求項１または２に記載の車両用灯具用樹脂製リフレクタ。 The resin reflector for a vehicle lamp according to claim 1 or 2, wherein the continuous reinforcing rib is formed on each back surface of a plurality of reflective areas of the reflective section.
  5. 　前記連続補強リブが、前記反射部の複数の反射領域の裏面毎に複数ずつ形成されたことを特徴とする、請求項１または２に記載の車両用灯具用樹脂製リフレクタ。 3. The resin reflector for a vehicle lamp according to claim 1, wherein a plurality of the continuous reinforcing ribs are formed on each back surface of the plurality of reflection areas of the reflection section.
PCT/JP2023/009580 2022-03-22 2023-03-13 Plastic reflector for vehicular light fixture WO2023182043A1 (en)

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JP2022045673A JP2023139902A (en) 2022-03-22 2022-03-22 Resin reflector for vehicle lamp
JP2022-045673 2022-03-22

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09330602A (en) * 1996-06-07 1997-12-22 Koito Mfg Co Ltd Light for vehicle
JPH10255516A (en) * 1997-03-14 1998-09-25 Koito Mfg Co Ltd Reflector of vehicular lighting fixture, and vehicular lighting fixture using the reflector
JP2005019018A (en) * 2003-06-23 2005-01-20 Koito Mfg Co Ltd Vehicular lamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09330602A (en) * 1996-06-07 1997-12-22 Koito Mfg Co Ltd Light for vehicle
JPH10255516A (en) * 1997-03-14 1998-09-25 Koito Mfg Co Ltd Reflector of vehicular lighting fixture, and vehicular lighting fixture using the reflector
JP2005019018A (en) * 2003-06-23 2005-01-20 Koito Mfg Co Ltd Vehicular lamp

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