WO2023182043A1 - Réflecteur en plastique pour appareil d'éclairage de véhicule - Google Patents

Réflecteur en plastique pour appareil d'éclairage de véhicule Download PDF

Info

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
Authority
WO
WIPO (PCT)
Prior art keywords
reflective
wall portion
reflector
continuous reinforcing
vehicle lamp
Prior art date
Application number
PCT/JP2023/009580
Other languages
English (en)
Japanese (ja)
Inventor
和樹 森下
Original Assignee
株式会社小糸製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Publication of WO2023182043A1 publication Critical patent/WO2023182043A1/fr

Links

Images

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
    • F21S41/30—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.

Landscapes

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

Abstract

L'invention concerne un réflecteur possédant une partie de réflexion qui possède une pluralité répertoriée de régions de réflexion vers l'avant. L'invention concerne un réflecteur en plastique (1) pour un appareil d'éclairage de véhicule, le réflecteur en plastique (1) possédant une partie de réflexion (2) possédant une pluralité répertoriée de régions de réflexion vers l'avant (3 à 6), une partie paroi supérieure (7) moulée d'un seul tenant avec une section d'extrémité supérieure (2a) de la partie de réflexion (2) et une partie paroi inférieure (8) moulée d'un seul tenant avec une section d'extrémité inférieure (2b) de la partie de réflexion (2), le réflecteur en plastique (1) étant caractérisé en ce qu'il possède des nervures de renforcement continues (15 à 18) qui sont moulées d'un seul tenant de façon à couvrir les surfaces périphériques externes de la partie paroi inférieure (8), de la partie de réflexion (2) et de la partie paroi supérieure (7).
PCT/JP2023/009580 2022-03-22 2023-03-13 Réflecteur en plastique pour appareil d'éclairage de véhicule WO2023182043A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-045673 2022-03-22
JP2022045673A JP2023139902A (ja) 2022-03-22 2022-03-22 車両用灯具用樹脂製リフレクタ

Publications (1)

Publication Number Publication Date
WO2023182043A1 true WO2023182043A1 (fr) 2023-09-28

Family

ID=88101438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/009580 WO2023182043A1 (fr) 2022-03-22 2023-03-13 Réflecteur en plastique pour appareil d'éclairage de véhicule

Country Status (2)

Country Link
JP (1) JP2023139902A (fr)
WO (1) WO2023182043A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09330602A (ja) * 1996-06-07 1997-12-22 Koito Mfg Co Ltd 車輌用灯具
JPH10255516A (ja) * 1997-03-14 1998-09-25 Koito Mfg Co Ltd 車輌用灯具のリフレクターおよび同リフレクターを用いた車輌用灯具
JP2005019018A (ja) * 2003-06-23 2005-01-20 Koito Mfg Co Ltd 車両用灯具

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09330602A (ja) * 1996-06-07 1997-12-22 Koito Mfg Co Ltd 車輌用灯具
JPH10255516A (ja) * 1997-03-14 1998-09-25 Koito Mfg Co Ltd 車輌用灯具のリフレクターおよび同リフレクターを用いた車輌用灯具
JP2005019018A (ja) * 2003-06-23 2005-01-20 Koito Mfg Co Ltd 車両用灯具

Also Published As

Publication number Publication date
JP2023139902A (ja) 2023-10-04

Similar Documents

Publication Publication Date Title
US6746634B2 (en) Vehicular lamp and injection mold and manufacturing method for lamp body of vehicular lamp
US7244057B2 (en) Headlight
US7144145B2 (en) Vehicle headlight
JP4264335B2 (ja) 車両用前照灯
JP2507834B2 (ja) 投射型自動車用ヘッドランプ
CN112074687B (zh) 投射式前照灯
JP5180454B2 (ja) 車両用灯具及びその製造方法
US9546767B2 (en) Lamp unit and projector lens
US8256946B2 (en) Vehicle light
WO2023182043A1 (fr) Réflecteur en plastique pour appareil d'éclairage de véhicule
US20100321947A1 (en) Vehicle lighting device
JP4666174B2 (ja) 車両用灯具
JPH079647U (ja) 車輌用灯具
EP0582994B1 (fr) Réflecteur pour véhicule automobile obtenu par moulage en résine synthétique
JP2005166588A (ja) 車両用前照灯
JP2507835B2 (ja) 自動車用コンビネ―ションヘッドランプ
JP4895137B2 (ja) 車両用灯具
JP4626575B2 (ja) 車両用灯具のリフレクタ
JP2023165203A (ja) 車両用灯具
US10781991B1 (en) Projection headlight
CN219283147U (zh) 机动车辆灯模块
WO2024111517A1 (fr) Lampe de véhicule
WO2024101368A1 (fr) Gabarit et procédé de fabrication de phare de véhicule
JP2573830Y2 (ja) 車両用灯具
JP4303336B2 (ja) 自動車用灯具における樹脂製の素通しレンズ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23774640

Country of ref document: EP

Kind code of ref document: A1