WO2023190498A1 - Vehicular lamp - Google Patents

Vehicular lamp Download PDF

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Publication number
WO2023190498A1
WO2023190498A1 PCT/JP2023/012477 JP2023012477W WO2023190498A1 WO 2023190498 A1 WO2023190498 A1 WO 2023190498A1 JP 2023012477 W JP2023012477 W JP 2023012477W WO 2023190498 A1 WO2023190498 A1 WO 2023190498A1
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WO
WIPO (PCT)
Prior art keywords
heat sink
inner lens
light source
base surface
surface portion
Prior art date
Application number
PCT/JP2023/012477
Other languages
French (fr)
Japanese (ja)
Inventor
諒平 岩熊
俊之 藤村
Original Assignee
株式会社小糸製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Priority to JP2024512555A priority Critical patent/JPWO2023190498A1/ja
Publication of WO2023190498A1 publication Critical patent/WO2023190498A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F21S41/55—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/10—Protection of lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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

Definitions

  • the present invention relates to the technical field of a vehicle lamp capable of adjusting the optical axis of a light source mounted on a board attached to a heat sink.
  • Some vehicle lamps have a structure in which a board on which a light source is mounted is attached to a heat sink that has a function of emitting heat, and the heat generated when the light source is turned on is emitted by the heat sink (for example, Patent Document (see 1).
  • the heat sink is connected to the lamp housing via an optical axis adjustment mechanism having an adjusting screw, and the optical axis adjustment mechanism allows the heat sink to be tilted with respect to the lamp housing to adjust the optical axis of the light source.
  • an optical axis adjustment mechanism having an adjusting screw
  • the optical axis adjustment mechanism allows the heat sink to be tilted with respect to the lamp housing to adjust the optical axis of the light source.
  • the heat sink is generally made of a metal material to ensure high heat dissipation, but the adjusting screw is made of a resin material in order to reduce manufacturing costs.
  • the adjusting screw formed from a resin material is less rigid than the adjusting screw formed from a metal material. is likely to decrease. Therefore, if a large force is applied from the heat sink to the adjusting screw when vibration occurs in the heat sink while the vehicle is running, the adjusting screw may be deformed or damaged.
  • an object of the present invention is to reduce manufacturing costs and prevent the adjusting screw from being deformed or damaged.
  • a vehicular lamp according to the present invention includes a substrate on which a light source is mounted, a heat sink made of a metal material and having a base surface portion to which the substrate is attached, and which releases heat generated when the light source is turned on, and a resin material. and an adjusting screw provided in an optical axis adjustment mechanism for adjusting the optical axis of the light source, and a standing wall portion functioning as a reinforcing rib is provided at least on the outer peripheral portion of the heat sink.
  • the heat sink is reinforced by the standing wall portion, increasing the rigidity of the heat sink.
  • the heat sink is reinforced by the vertical wall portion, increasing the rigidity of the heat sink, improving the vibration resistance of the heat sink, making it difficult to apply large force to the adjusting screw formed of a resin material, and reducing manufacturing costs. This makes it possible to prevent the adjusting screw from deforming or breaking.
  • FIG. 2 is an exploded perspective view showing the internal structure of the vehicle lamp.
  • FIG. 2 is a perspective view showing the internal structure of the vehicle lamp.
  • FIG. 3 is a perspective view of a heat sink.
  • FIG. 5 is a perspective view of the heat sink as seen from a different direction from FIG. 4; It is a sectional view of a heat sink.
  • the vehicular lamp of the present invention can also be applied to a vehicular lamp attached to a vehicle other than a two-wheeled vehicle.
  • a vehicle lamp having the functions of a headlamp, a turn signal lamp, and a position lamp will be described as an example.
  • the vehicular lamp of the present invention only needs to function as at least a headlamp.
  • the vehicular lamp 1 includes a lamp housing 2 having a concave portion opened at the front and a cover 3 that closes the opening of the lamp housing 2 (see FIG. 1).
  • the lamp housing 2 and the cover 3 constitute a lamp outer casing 4.
  • the interior space of the lamp outer casing 4 is formed as a lamp chamber.
  • the lamp housing 2 is provided with a mounting protrusion (not shown) that protrudes forward.
  • An extension (not shown) is arranged in the light chamber.
  • a headlamp unit 5, a pair of turn signal lamp units 6, and a pair of position lamp units 7 are arranged in the light chamber (see FIGS. 2 and 3).
  • the headlamp unit 5 is arranged at the center in the left-right direction, the turn signal lamp units 6 are arranged on the left and right sides of the headlamp unit 5, and the position lamp units 7 are arranged on the left and right sides in front of the headlamp unit 5. .
  • a control board 8 disposed in the lamp chamber is attached to the lamp housing 2 so as to face in the front-rear direction.
  • the control board 8 has a function of controlling each part of the headlamp unit 5, turn signal lamp unit 6, and position lamp unit 7.
  • the headlamp unit 5 is arranged on the front side of the control board 8.
  • the headlamp unit 5 is constructed by attaching predetermined parts to a heat sink 9.
  • a first substrate 10, a first inner lens 11, a second substrate 12, a reflector 13, and a second inner lens 14 are attached to the heat sink 9.
  • a first light source 15 is mounted on the front surface of the first substrate 10, and a plurality of second light sources 16 are mounted on the front surface of the second substrate 12.
  • the turn signal lamp unit 6 has a turn substrate 17 and a turn inner lens 18, and a plurality of turn light sources 19 are mounted on the front surface of the turn substrate 17.
  • the turn signal lamp unit 6 is attached to the lamp housing 2 by screws or the like, and the turn light source 19 is covered from the front by the turn inner lens 18.
  • the light emitted from the turning light source 19 is controlled by the turning inner lens 18, passes through the turning inner lens 18 and the cover 3, and is irradiated to the outside.
  • the position lamp unit 7 has a position substrate 20, a bracket 21, and a position inner lens 22, and a plurality of position light sources 23 are mounted on the front surface of the position substrate 20.
  • a position substrate 20 is attached to the rear surface of a bracket 21, and a position inner lens 22 is attached to the front surface of the bracket 21.
  • the position lamp unit 7 is attached to the lamp housing 2 by screws or the like.
  • a plurality of light transmission holes 21a are formed in the bracket 21, through which light emitted from the position light source 23 is transmitted.
  • the positioning inner lens 22 is attached to the front surface of the bracket 21, the light transmission hole 21a is covered from the front by the positioning inner lens 22.
  • the light emitted from the position light source 23 is controlled by the position inner lens 22, passes through the position inner lens 22 and the cover 3, and is irradiated to the outside.
  • the heat sink 9 is composed of a main body 24 formed in a vertically elongated substantially rectangular shape facing in the front-rear direction and three connecting parts 25 protruding laterally from the main body 24 (see FIGS. 4 and 5).
  • the main body portion 24 has a base surface portion 26 facing in the front-rear direction and each portion protruding forward or backward from the base surface portion 26.
  • the main body portion 24 has a thickness T1 of 2 mm to 3 mm, for example, 2 mm (see FIG. 6).
  • the thickness T1 of the main body portion 24 is preferably 2 mm to 2.6 mm, more preferably 2 mm to 2.4 mm, and even more preferably 2 mm to 2.2 mm. .
  • a standing wall portion 27 that functions as a reinforcing rib is provided on the outer periphery of the heat sink 9 except for a part of the entire periphery (see FIGS. 4 and 5).
  • the vertical wall portion 27 has a thickness T2 of 2 mm to 3 mm, for example, 2 mm (see FIG. 6).
  • the thickness T2 of the vertical wall portion 27 is desirably made thinner, for example, 2 mm to 2.5 mm, and in order to increase the rigidity of the heat sink 9, it is made thicker. For example, it is desirable that the thickness be set to 2.5 mm to 3 mm.
  • the vertical wall portions 27 are provided on the front and rear sides of the heat sink 9 with each portion protruding forward or backward from the base surface portion 26 (see FIGS. 4 to 6).
  • the vertical wall portion 27 includes a first wall portion 27a that projects forward from both left and right ends of the base surface portion 26, and a second wall portion 27a that projects forward from the lower end of the base surface portion 26.
  • a wall portion 27b and a third wall portion 27c protruding forward from each outer peripheral portion of the connecting portion 25 are provided.
  • a fourth wall portion 27d protrudes rearward from both left and right ends of the base surface portion 26, and a fourth wall portion 27d protrudes rearward from the upper end portion of the base surface portion 26.
  • a sixth wall portion 27e and a sixth wall portion 27f projecting rearward from the lower end of the base surface portion 26 are provided.
  • An insertion hole 26a is formed in the center of the base surface portion 26 in the vertical direction.
  • the heat sink 9 has a seventh wall portion 27g as a standing wall portion 27 that projects forward from the front opening edge of the insertion hole 26a, and an eighth wall portion 27g that projects rearward from the rear opening edge of the insertion hole 26a or a portion around it.
  • a wall portion 27h is provided.
  • a mounting protrusion provided on the lamp housing 2 is inserted into the insertion hole 26a of the base surface portion 26 from the rear.
  • At least one bracket 21 in the position lamp unit 7 is attached to the tip of the attachment protrusion by screwing or the like.
  • a first mounting screw hole 28 is formed on the front side of the heat sink 9 near the upper end.
  • first positioning pins 29 are provided on both left and right sides of the first mounting screw hole 28, respectively, and protrude forward from the base surface portion 26.
  • a plurality of receiving protrusions 30, two first positioning pins 31, and two first mounting bosses 32 are provided on the front side of the heat sink 9, each protruding forward from the base surface portion 26.
  • two receiving protrusions 30 are provided at the upper end of the heat sink 9, separated from each other in the left and right directions, and one is provided at a position continuous with the seventh wall portion 27g.
  • the first positioning pin 31 and the first mounting boss 32 are provided spaced apart from each other in the left and right directions, and are located between the upper receiving protrusion 30 and the insertion hole 26a.
  • the heat sink 9 is provided with a plurality of first reinforcing protrusions 33 that are continuous with the first mounting bosses 32 and protrude forward from the base surface portion 26 .
  • a second mounting screw hole 34 is formed on the front side of the heat sink 9 near the lower end.
  • second positioning pins 35 are provided on the opposite side of the second mounting screw hole 34, each protruding forward from the base surface portion 26.
  • Two second positioning pins 36 and two second mounting bosses 37 are provided on the front side of the heat sink 9, each protruding forward from the base surface portion 26.
  • the second alignment pin 36 and the second attachment boss 37 are provided spaced apart from each other in the left and right directions, and are located between the second wall portion 27b and the insertion hole 26a.
  • the heat sink 9 is provided with a plurality of second reinforcing protrusions 38 that are continuous with the second attachment bosses 37 and protrude forward from the base surface portion 26 .
  • a plurality of radiation fins 39 are provided on the rear side of the heat sink 9.
  • the radiation fins 39 protrude rearward from the base surface portion 26, are spaced apart from each other vertically, and are arranged side by side in a vertically extending state.
  • the connecting portion 25 has, for example, two connecting holes 25a on the upper side and one on the lower side, which are penetrated from the front and back.
  • the heat sink 9 is connected to the lamp housing 2 by an optical axis adjustment mechanism 40 (see FIGS. 2 and 3).
  • the optical axis adjustment mechanism 40 includes two self-locking nuts 41, two adjusting screws 42, one pivot receiver 43, and one pivot shaft 44.
  • the self-locking nut 41 is supported while being inserted into the connecting hole 25a, and is tiltable relative to the connecting portion 25. A portion of the self-locking nut 41 is supported by the lamp housing 2 so as to be movable in the front-back direction.
  • the adjusting screw 42 is made of a resin material, and has a front half portion as a helical shaft portion 42a, a rear end portion as a supported portion 42b, and a rear end portion as an operating portion 42c.
  • the adjusting screw 42 has a threaded shaft portion 42a screwed into the self-locking nut 41, and a supported portion 42b supported by the lamp housing 2 in a rotatable but immovable state in the axial direction.
  • the operating portion 42c is located on the rear side of the lamp housing 2.
  • the pivot receiver 43 is connected to the connecting portion 25.
  • the pivot shaft 44 has a front end portion formed as a spherical portion 44a and a rear approximately half portion formed as a coupling portion 44b.
  • the pivot shaft 44 has a spherical portion 44a connected to the pivot receiver 43 in a relatively rotatable state, and a connecting portion 44b connected to the lamp housing 2.
  • optical axis adjustment mechanism 40 when one operating section 42c is rotated and one adjusting screw 42 is rotated in the direction around the axis, aiming adjustment (optical axis adjustment) in the vertical direction is performed, and the other operating section When the adjusting screw 42c is rotated and the other adjusting screw 42 is rotated in the direction around the axis, aiming adjustment (optical axis adjustment) in the left and right direction is performed.
  • the first substrate 10, first inner lens 11, and first light source 15 are for high beam
  • the second substrate 12, reflector 13, second inner lens 14, and second light source are for high beam
  • 16 is for low beam.
  • a first screw insertion hole 10a and two first positioning holes 10b are formed in the first substrate 10, and the first positioning holes 10b are located on both sides of the first screw insertion hole 10a.
  • first board 10 is positioned with respect to the heat sink 9 by inserting the first positioning pins 29 into the first positioning holes 10b, mounting screws (not shown) are inserted into the first screw insertion holes 10a. is attached to the heat sink 9 by being screwed into the first screw hole 28 for attachment.
  • Two first mounting holes 11a and two first alignment holes 11b are formed in the first inner lens 11, and the first mounting holes 11a and the first alignment holes 11b are arranged on the left and right sides, respectively. located at a distance.
  • the first inner lens 11 is inserted into the first mounting hole 11a in a state where the first alignment pin 31 is inserted into the first alignment hole 11b and positioned with respect to the heat sink 9.
  • the heat sink 9 is attached to the heat sink 9 by screwing a mounting screw (not shown) into the first mounting boss 32 .
  • the first inner lens 11 When the first inner lens 11 is attached to the heat sink 9, the first inner lens 11 is pressed against the receiving protrusion 30, and the position of the first inner lens 11 in the front-rear direction is determined. Furthermore, when the first inner lens 11 is attached to the heat sink 9, the first light source 15 mounted on the first substrate 10 is covered from the front by the first inner lens 11.
  • a second screw insertion hole 12a and two second positioning holes 12b are formed in the second board 12, and the second positioning hole 12b is located on the opposite side of the second screw insertion hole 12a. There is.
  • Two positioning insertion holes 13a are formed in the reflector 13, spaced apart from each other on the left and right.
  • the reflector 13 is formed with an arrangement notch 13b that is open downward.
  • the reflector 13 is positioned with respect to the heat sink 9 by inserting the second attachment bosses 37 into the positioning insertion holes 13a, respectively. Therefore, the second attachment boss 37 also functions as a positioning protrusion for positioning the reflector 13 with respect to the heat sink 9.
  • Two second mounting holes 14a and two second positioning holes 14b are formed in the second inner lens 14, and the second mounting holes 14a and the second positioning holes 14b are arranged on the left and right sides, respectively. located at a distance.
  • the second inner lens 14 is inserted into the second mounting hole 14a in a state where the second alignment pin 36 is inserted into the second alignment hole 14b and positioned with respect to the heat sink 9.
  • the heat sink 9 is attached to the heat sink 9 by screwing the second attachment boss 37 into the second attachment boss 37.
  • the second inner lens 14 is attached to the heat sink 9 in a state covering the reflector 13, and the reflector 13 is fastened together with the second inner lens 14 by a mounting screw screwed into the second mounting boss 37, so that the heat sink 9 can be attached to.
  • the second light source 16 is located in the placement notch 13b. Further, when the reflector 13 is attached to the heat sink 9, the reflector 13 is pressed against the second reinforcing protrusion 38, and the position of the reflector 13 in the front-rear direction is determined. Therefore, the second reinforcing protrusion 38 also functions as a receiving protrusion for receiving the reflector 13.
  • the second inner lens 14 When the second inner lens 14 is attached to the heat sink 9, the second inner lens 14 is pressed against a part of the reflector 13, and the position of the second inner lens 14 in the front-rear direction is determined. Furthermore, when the second inner lens 14 is attached to the heat sink 9, the second light source 16 mounted on the second substrate 12 is covered from the front by the second inner lens 14.
  • the light emitted from the first light source 15 is controlled by the first inner lens 11, transmitted through the first inner lens 11 and the cover 3, and directed to the outside. It is emitted as high beam light. Further, the light emitted from the second light source 16 is reflected by the reflector 13, controlled by the second inner lens 14, transmitted through the second inner lens 14 and the cover 3, and irradiated to the outside as low beam light. Ru.
  • the adjusting screw 42 is made of a resin material, and the standing wall portion 27 functioning as a reinforcing rib is provided at least on the outer peripheral portion of the heat sink 9.
  • the heat sink 9 is reinforced by the vertical wall portion 27 and the rigidity of the heat sink 9 is increased, so that the vibration resistance of the heat sink 9 is improved, and it becomes difficult to apply a large force to the adjusting screw 42 formed of a resin material. In addition to reducing costs, it is possible to prevent the adjusting screw 42 from being deformed or damaged.
  • the heat sink 9 is lightweight, and the force applied from the heat sink 9 to the adjusting screw 42 when vibration or the like occurs is suppressed. , it is possible to enhance the effect of preventing the adjusting screw 42 from being deformed or damaged.
  • the vibrations that occur tend to be large. Therefore, by using the heat sink 9 according to the present invention in the vehicle lamp 1 of a two-wheeled vehicle, manufacturing costs can be reduced. In addition, it is possible to obtain a particularly large effect of preventing the adjusting screw 42 from being deformed or damaged.
  • the rigidity of the heat sink 9 increases against deformation in both directions in the thickness direction of the base surface portion 26, and the vibration resistance of the heat sink 9 increases. This further increases the effect of preventing deformation and damage of the adjusting screw 42.
  • the heat sink 9 is provided with a first attachment boss 32 and a second attachment boss 37 that protrude from the base surface portion 26 and are used to attach the first inner lens 11 and the second inner lens 14, respectively.
  • a first reinforcing protrusion 33 and a second reinforcing protrusion 38 are provided that protrude from the surface portion 26 and are continuous to the first attachment boss 32 and the second attachment boss 37, respectively.
  • the first mounting boss 32, the second mounting boss 37, the first reinforcing protrusion 33, and the second reinforcing protrusion 38 all function as reinforcing ribs, further increasing the rigidity of the heat sink 9.
  • the vibration resistance of the adjusting screw 9 is further increased, and the effect of preventing the adjusting screw 42 from being deformed or damaged can be further enhanced.
  • the heat sink 9 is provided with a receiving protrusion 30 that protrudes from the base surface part 26 and comes into contact with the first inner lens 11.
  • the position of the first inner lens 11 in the front-rear direction is determined by the receiving protrusion 30, and the rigidity of the heat sink 9 is further increased.
  • the effect of preventing deformation and damage can be enhanced.
  • the heat sink 9 is provided with a second reinforcing protrusion 38 that also functions as a receiving protrusion for receiving the second inner lens 14 .
  • the rigidity of the heat sink 9 is further increased. Therefore, while ensuring good positional accuracy of the second inner lens 14, it is also possible to enhance the effect of preventing deformation and damage of the adjusting screw 42.
  • a standing wall portion 27 (third wall portion 27c) is provided at the opening edge of the insertion hole 26a in the lamp housing 2.
  • the standing wall part 27 is also provided on the opening edge of the insertion hole 26a, so that the rigidity of the heat sink 9 is further increased.
  • SYMBOLS 1 Vehicle lamp, 9... Heat sink, 10... First substrate, 11... First inner lens, 12... Second substrate, 14... Second inner lens, 15... First light source, 16... First 2 light source, 26... Base surface portion, 26a... Insertion hole, 27... Vertical wall portion, 32... First mounting boss, 33... First reinforcing protrusion, 37... Second mounting boss, 38... Second reinforcement Projection, 40... Optical axis adjustment mechanism, 42... Adjusting screw

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

Abstract

The present invention comprises: a substrate on which a light source is mounted; a heat sink that includes a base surface part which is formed of a metal material and to which the substrate is attached, and that releases the heat generated when the light source is ON; and an adjusting screw that is provided to an optical axis adjusting mechanism which is formed of a resin material and which is for adjusting the optical axis of the light source. At least an outer circumferential section of the heat sink is provided with a vertical wall which functions as a reinforcement rib.

Description

車輌用灯具Vehicle lights

　本発明は、ヒートシンクに取り付けられた基板に搭載された光源の光軸調整を行うことが可能な車輌用灯具についての技術分野に関する。 The present invention relates to the technical field of a vehicle lamp capable of adjusting the optical axis of a light source mounted on a board attached to a heat sink.

　車輌用灯具には、熱を放出する機能を有するヒートシンクに光源が搭載された基板が取り付けられ、光源の点灯時に発生する熱がヒートシンクによって放出される構成にされたものがある（例えば、特許文献１参照）。 Some vehicle lamps have a structure in which a board on which a light source is mounted is attached to a heat sink that has a function of emitting heat, and the heat generated when the light source is turned on is emitted by the heat sink (for example, Patent Document (see 1).

　また、このような構成において、ヒートシンクがアジャスティングスクリューを有する光軸調整機構を介してランプハウジングに連結され、光軸調整機構によってヒートシンクがランプハウジングに対して傾動されて光源の光軸が調整可能にされた車輌用灯具がある（例えば、特許文献２参照）。 In addition, in such a configuration, the heat sink is connected to the lamp housing via an optical axis adjustment mechanism having an adjusting screw, and the optical axis adjustment mechanism allows the heat sink to be tilted with respect to the lamp housing to adjust the optical axis of the light source. There is a vehicular lamp that is designed as follows (see, for example, Patent Document 2).

特開２０１６－４６７０号公報Japanese Patent Application Publication No. 2016-4670 特開２０１３－１３４９８０号公報JP2013-134980A

　ところで、上記のような車輌用灯具においては、一般に、ヒートシンクが高い放熱性を確保するために金属材料によって形成されるが、製造コストの低減等を図るためにアジャスティングスクリューが樹脂材料によって形成される場合がある。 By the way, in the above-mentioned vehicle lights, the heat sink is generally made of a metal material to ensure high heat dissipation, but the adjusting screw is made of a resin material in order to reduce manufacturing costs. There may be cases where

　しかしながら、アジャスティングスクリューが樹脂材料によって形成されることにより製造コストの低減を図ることは可能であるが、樹脂材料によって形成されたアジャスティングスクリューは金属材料によって形成されたアジャスティングスクリューに対して剛性が低下し易くなってしまう。従って、車輌の走行中にヒートシンクに振動が生じたときに、ヒートシンクからアジャスティングスクリューに大きな力が付与されてしまうと、アジャスティングスクリューの変形や破損が生じるおそれがある。 However, although it is possible to reduce manufacturing costs by forming the adjusting screw from a resin material, the adjusting screw formed from a resin material is less rigid than the adjusting screw formed from a metal material. is likely to decrease. Therefore, if a large force is applied from the heat sink to the adjusting screw when vibration occurs in the heat sink while the vehicle is running, the adjusting screw may be deformed or damaged.

　特に、車輌が二輪車の場合には、ヒートシンクに生じる振動が大きくなり易く、ヒートシンクに大きな振動が生じるとヒートシンクからアジャスティングスクリューに大きな力が付与される可能性が高くなってしまう。 In particular, when the vehicle is a two-wheeled vehicle, vibrations generated in the heat sink tend to be large, and when large vibrations occur in the heat sink, there is a high possibility that a large force will be applied from the heat sink to the adjusting screw.

　そこで、本発明は、製造コストの低減を図った上でアジャスティングスクリューの変形や破損の発生を防止することを目的とする。 Therefore, an object of the present invention is to reduce manufacturing costs and prevent the adjusting screw from being deformed or damaged.

　本発明に係る車輌用灯具は、光源が搭載された基板と、金属材料によって形成されると共に前記基板が取り付けられるベース面部を有し前記光源の点灯時に発生する熱を放出するヒートシンクと、樹脂材料によって形成されると共に前記光源の光軸調整を行う光軸調整機構に設けられたアジャスティングスクリューとを備え、前記ヒートシンクの少なくとも外周部に補強リブとして機能する立壁部が設けられたものである。 A vehicular lamp according to the present invention includes a substrate on which a light source is mounted, a heat sink made of a metal material and having a base surface portion to which the substrate is attached, and which releases heat generated when the light source is turned on, and a resin material. and an adjusting screw provided in an optical axis adjustment mechanism for adjusting the optical axis of the light source, and a standing wall portion functioning as a reinforcing rib is provided at least on the outer peripheral portion of the heat sink.

　これにより、立壁部によってヒートシンクが補強されてヒートシンクの剛性が高くなる。 As a result, the heat sink is reinforced by the standing wall portion, increasing the rigidity of the heat sink.

　本発明によれば、立壁部によってヒートシンクが補強されてヒートシンクの剛性が高くなるためヒートシンクの耐振動性が向上して樹脂材料によって形成されたアジャスティングスクリューに大きな力が付与され難くなり、製造コストの低減を図った上でアジャスティングスクリューの変形や破損の発生を防止することができる。 According to the present invention, the heat sink is reinforced by the vertical wall portion, increasing the rigidity of the heat sink, improving the vibration resistance of the heat sink, making it difficult to apply large force to the adjusting screw formed of a resin material, and reducing manufacturing costs. This makes it possible to prevent the adjusting screw from deforming or breaking.

図２乃至図６と共に本発明車輌用灯具の実施の形態を示すものであり、本図は、車輌用灯具の斜視図である。An embodiment of the vehicle lamp according to the present invention is shown together with FIGS. 2 to 6, and this figure is a perspective view of the vehicle lamp. 車輌用灯具の内部構造を示す分解斜視図である。FIG. 2 is an exploded perspective view showing the internal structure of the vehicle lamp. 車輌用灯具の内部構造を示す斜視図である。FIG. 2 is a perspective view showing the internal structure of the vehicle lamp. ヒートシンクの斜視図である。FIG. 3 is a perspective view of a heat sink. 図４とは異なる方向から見た状態で示すヒートシンクの斜視図である。FIG. 5 is a perspective view of the heat sink as seen from a different direction from FIG. 4; ヒートシンクの断面図である。It is a sectional view of a heat sink.

　以下に、本発明車輌用灯具を実施するための形態について添付図面を参照して説明する。以下には二輪車に設けられた車輌用灯具について説明する。但し、本発明車輌用灯具は二輪車以外の車輌に取り付けられる車輌用灯具に適用することも可能である。 Hereinafter, embodiments for implementing the vehicle lamp of the present invention will be described with reference to the accompanying drawings. Below, a description will be given of a vehicle light provided on a two-wheeled vehicle. However, the vehicular lamp of the present invention can also be applied to a vehicular lamp attached to a vehicle other than a two-wheeled vehicle.

　尚、以下には、例として、ヘッドランプとターンシグナルランプとポジションランプの機能を有する車輌用灯具について説明する。但し、本発明車輌用灯具は、少なくともヘッドランプとして機能すればよい。 In the following, a vehicle lamp having the functions of a headlamp, a turn signal lamp, and a position lamp will be described as an example. However, the vehicular lamp of the present invention only needs to function as at least a headlamp.

　＜車輌用灯具の概略構成＞
　先ず、車輌用灯具１の概略構成について説明する（図１乃至図３参照）。 <Schematic configuration of vehicle light>
First, the schematic structure of the vehicle lamp 1 will be described (see FIGS. 1 to 3).

　車輌用灯具１は前方に開口された凹部を有するランプハウジング２とランプハウジング２の開口を閉塞するカバー３とを備えている（図１参照）。ランプハウジング２とカバー３によって灯具外筐４が構成されている。灯具外筐４の内部空間は灯室として形成されている。 The vehicular lamp 1 includes a lamp housing 2 having a concave portion opened at the front and a cover 3 that closes the opening of the lamp housing 2 (see FIG. 1). The lamp housing 2 and the cover 3 constitute a lamp outer casing 4. The interior space of the lamp outer casing 4 is formed as a lamp chamber.

　ランプハウジング２には前方に突出された図示しない取付突部が設けられている。灯室には図示しないエクステンションが配置されている。 The lamp housing 2 is provided with a mounting protrusion (not shown) that protrudes forward. An extension (not shown) is arranged in the light chamber.

　灯室にはヘッドランプユニット５と一対のターンシグナルランプユニット６と一対のポジションランプユニット７が配置されている（図２及び図３参照）。ヘッドランプユニット５は左右方向における中央部に配置され、ターンシグナルランプユニット６はヘッドランプユニット５の左右両側にそれぞれ配置され、ポジションランプユニット７はヘッドランプユニット５の前側において左右に配置されている。 A headlamp unit 5, a pair of turn signal lamp units 6, and a pair of position lamp units 7 are arranged in the light chamber (see FIGS. 2 and 3). The headlamp unit 5 is arranged at the center in the left-right direction, the turn signal lamp units 6 are arranged on the left and right sides of the headlamp unit 5, and the position lamp units 7 are arranged on the left and right sides in front of the headlamp unit 5. .

　ランプハウジング２には灯室に配置された制御基板８が前後方向を向く状態で取り付けられている。制御基板８はヘッドランプユニット５とターンシグナルランプユニット６とポジションランプユニット７の各部を制御する機能を有している。 A control board 8 disposed in the lamp chamber is attached to the lamp housing 2 so as to face in the front-rear direction. The control board 8 has a function of controlling each part of the headlamp unit 5, turn signal lamp unit 6, and position lamp unit 7.

　ヘッドランプユニット５は制御基板８の前側に配置されている。ヘッドランプユニット５はヒートシンク９に所定の各部が取り付けられて構成されている。ヒートシンク９には第１の基板１０と第１のインナーレンズ１１と第２の基板１２とリフレクター１３と第２のインナーレンズ１４が取り付けられている。第１の基板１０の前面には第１の光源１５が搭載され第２の基板１２の前面には複数の第２の光源１６が搭載されている。 The headlamp unit 5 is arranged on the front side of the control board 8. The headlamp unit 5 is constructed by attaching predetermined parts to a heat sink 9. A first substrate 10, a first inner lens 11, a second substrate 12, a reflector 13, and a second inner lens 14 are attached to the heat sink 9. A first light source 15 is mounted on the front surface of the first substrate 10, and a plurality of second light sources 16 are mounted on the front surface of the second substrate 12.

　ターンシグナルランプユニット６はターン用基板１７とターン用インナーレンズ１８とを有し、ターン用基板１７の前面には複数のターン用光源１９が搭載されている。ターンシグナルランプユニット６はネジ止め等によってランプハウジング２に取り付けられターン用光源１９がターン用インナーレンズ１８によって前方から覆われている。 The turn signal lamp unit 6 has a turn substrate 17 and a turn inner lens 18, and a plurality of turn light sources 19 are mounted on the front surface of the turn substrate 17. The turn signal lamp unit 6 is attached to the lamp housing 2 by screws or the like, and the turn light source 19 is covered from the front by the turn inner lens 18.

　ターン用光源１９から出射された光はターン用インナーレンズ１８によって制御されターン用インナーレンズ１８及びカバー３を透過されて外部へ向けて照射される。 The light emitted from the turning light source 19 is controlled by the turning inner lens 18, passes through the turning inner lens 18 and the cover 3, and is irradiated to the outside.

　ポジションランプユニット７はポジション用基板２０とブラケット２１とポジション用インナーレンズ２２とを有し、ポジション用基板２０の前面には複数のポジション用光源２３が搭載されている。ポジションランプユニット７は、ブラケット２１の後面にポジション用基板２０が取り付けられ、ブラケット２１の前面にポジション用インナーレンズ２２が取り付けられている。ポジションランプユニット７はネジ止め等によってランプハウジング２に取り付けられている。 The position lamp unit 7 has a position substrate 20, a bracket 21, and a position inner lens 22, and a plurality of position light sources 23 are mounted on the front surface of the position substrate 20. In the position lamp unit 7, a position substrate 20 is attached to the rear surface of a bracket 21, and a position inner lens 22 is attached to the front surface of the bracket 21. The position lamp unit 7 is attached to the lamp housing 2 by screws or the like.

　ブラケット２１にはポジション用光源２３から出射される光が透過される複数の光透過孔２１ａが形成されている。ブラケット２１の前面にポジション用インナーレンズ２２が取り付けられた状態においては、光透過孔２１ａがポジション用インナーレンズ２２によって前方から覆われている。 A plurality of light transmission holes 21a are formed in the bracket 21, through which light emitted from the position light source 23 is transmitted. In a state where the positioning inner lens 22 is attached to the front surface of the bracket 21, the light transmission hole 21a is covered from the front by the positioning inner lens 22.

　ポジション用光源２３から出射された光はポジション用インナーレンズ２２によって制御されポジション用インナーレンズ２２及びカバー３を透過されて外部へ向けて照射される。 The light emitted from the position light source 23 is controlled by the position inner lens 22, passes through the position inner lens 22 and the cover 3, and is irradiated to the outside.

　＜ヘッドランプユニット等の具体的構成＞
　次に、ヘッドランプユニット５等の具体的構成について説明する（図２乃至図６参照）。 <Specific configuration of headlamp unit, etc.>
Next, the specific configuration of the headlamp unit 5 and the like will be explained (see FIGS. 2 to 6).

　ヒートシンク９は前後方向を向く縦長の略矩形状に形成された本体部２４と本体部２４から側方に突出された三つの連結部２５とによって構成されている（図４及び図５参照）。 The heat sink 9 is composed of a main body 24 formed in a vertically elongated substantially rectangular shape facing in the front-rear direction and three connecting parts 25 protruding laterally from the main body 24 (see FIGS. 4 and 5).

　本体部２４は前後方向を向くベース面部２６とベース面部２６から前方又は後方に突出された各部とを有している。本体部２４は厚みＴ１が２ｍｍ～３ｍｍにされており、例えば、２ｍｍにされている（図６参照）。但し、本体部２４の厚みＴ１は、２ｍｍ～２．６ｍｍにされていることが望ましく、２ｍｍ～２．４ｍｍにされていることがより望ましく、２ｍｍ～２．２ｍｍにされていることがさらに望ましい。 The main body portion 24 has a base surface portion 26 facing in the front-rear direction and each portion protruding forward or backward from the base surface portion 26. The main body portion 24 has a thickness T1 of 2 mm to 3 mm, for example, 2 mm (see FIG. 6). However, the thickness T1 of the main body portion 24 is preferably 2 mm to 2.6 mm, more preferably 2 mm to 2.4 mm, and even more preferably 2 mm to 2.2 mm. .

　このように本体部２４の厚みＴ１が２ｍｍ～３ｍｍにされて薄くされることにより、ヒートシンク９の軽量化を図ることができる。 By reducing the thickness T1 of the main body portion 24 to 2 mm to 3 mm in this manner, it is possible to reduce the weight of the heat sink 9.

　ヒートシンク９の外周部には全周における一部を除いた部分に補強リブとして機能する立壁部２７が設けられている（図４及び図５参照）。立壁部２７は厚みＴ２が２ｍｍ～３ｍｍにされており、例えば、２ｍｍにされている（図６参照）。但し、立壁部２７の厚みＴ２は、ヒートシンク９の軽量化を図るためには薄くされて、例えば、２ｍｍ～２．５ｍｍにされていることが望ましく、ヒートシンク９の剛性を高めるためには厚くされて、例えば、２．５ｍｍ～３ｍｍにされていることが望ましい。 A standing wall portion 27 that functions as a reinforcing rib is provided on the outer periphery of the heat sink 9 except for a part of the entire periphery (see FIGS. 4 and 5). The vertical wall portion 27 has a thickness T2 of 2 mm to 3 mm, for example, 2 mm (see FIG. 6). However, in order to reduce the weight of the heat sink 9, the thickness T2 of the vertical wall portion 27 is desirably made thinner, for example, 2 mm to 2.5 mm, and in order to increase the rigidity of the heat sink 9, it is made thicker. For example, it is desirable that the thickness be set to 2.5 mm to 3 mm.

　立壁部２７はヒートシンク９の前面側と後面側において各部がベース面部２６から前方又は後方に突出された状態で設けられている（図４乃至図６参照）。立壁部２７として、ヒートシンク９の前面側においては、ベース面部２６の左右両端部からそれぞれ前方に突出された第１の壁部２７ａと、ベース面部２６の下端部から前方に突出された第２の壁部２７ｂと、連結部２５の各外周部から前方に突出された第３の壁部２７ｃとが設けられている。また、立壁部２７として、ヒートシンク９の後面側においては、ベース面部２６の左右両端部からそれぞれ後方に突出された第４の壁部２７ｄと、ベース面部２６の上端部から後方に突出された第５の壁部２７ｅと、ベース面部２６の下端部から後方に突出された第６の壁部２７ｆとが設けられている。 The vertical wall portions 27 are provided on the front and rear sides of the heat sink 9 with each portion protruding forward or backward from the base surface portion 26 (see FIGS. 4 to 6). On the front side of the heat sink 9, the vertical wall portion 27 includes a first wall portion 27a that projects forward from both left and right ends of the base surface portion 26, and a second wall portion 27a that projects forward from the lower end of the base surface portion 26. A wall portion 27b and a third wall portion 27c protruding forward from each outer peripheral portion of the connecting portion 25 are provided. Further, as the standing wall portion 27, on the rear side of the heat sink 9, a fourth wall portion 27d protrudes rearward from both left and right ends of the base surface portion 26, and a fourth wall portion 27d protrudes rearward from the upper end portion of the base surface portion 26. A sixth wall portion 27e and a sixth wall portion 27f projecting rearward from the lower end of the base surface portion 26 are provided.

　ベース面部２６には上下方向における中央部に挿通孔２６ａが形成されている。ヒートシンク９には立壁部２７として挿通孔２６ａの前側開口縁から前方に突出された第７の壁部２７ｇと挿通孔２６ａの後側開口縁又はその周囲の部分から後方に突出された第８の壁部２７ｈとが設けられている。ベース面部２６の挿通孔２６ａにはランプハウジング２に設けられた取付突部が後方から挿入される。取付突部の先端部にはポジションランプユニット７における少なくとも一方のブラケット２１がネジ止め等によって取り付けられる。 An insertion hole 26a is formed in the center of the base surface portion 26 in the vertical direction. The heat sink 9 has a seventh wall portion 27g as a standing wall portion 27 that projects forward from the front opening edge of the insertion hole 26a, and an eighth wall portion 27g that projects rearward from the rear opening edge of the insertion hole 26a or a portion around it. A wall portion 27h is provided. A mounting protrusion provided on the lamp housing 2 is inserted into the insertion hole 26a of the base surface portion 26 from the rear. At least one bracket 21 in the position lamp unit 7 is attached to the tip of the attachment protrusion by screwing or the like.

　ヒートシンク９の前面側には上端寄りの位置に第１の取付用螺穴２８が形成されている。ヒートシンク９の前面側には第１の取付用螺穴２８の左右両側にそれぞれベース面部２６から前方に突出された第１の位置決めピン２９が設けられている。 A first mounting screw hole 28 is formed on the front side of the heat sink 9 near the upper end. On the front side of the heat sink 9, first positioning pins 29 are provided on both left and right sides of the first mounting screw hole 28, respectively, and protrude forward from the base surface portion 26.

　ヒートシンク９の前面側にはベース面部２６からそれぞれ前方に突出された複数の受け突部３０と二つの第１の位置合わせピン３１と二つの第１の取付ボス３２が設けられている。受け突部３０は、例えば、ヒートシンク９の上端部に左右に離隔して二つが設けられると共に第７の壁部２７ｇに連続する位置に一つが設けられている。第１の位置合わせピン３１と第１の取付ボス３２はそれぞれ左右に離隔して設けられ、上側の受け突部３０と挿通孔２６ａの間に位置されている。 A plurality of receiving protrusions 30, two first positioning pins 31, and two first mounting bosses 32 are provided on the front side of the heat sink 9, each protruding forward from the base surface portion 26. For example, two receiving protrusions 30 are provided at the upper end of the heat sink 9, separated from each other in the left and right directions, and one is provided at a position continuous with the seventh wall portion 27g. The first positioning pin 31 and the first mounting boss 32 are provided spaced apart from each other in the left and right directions, and are located between the upper receiving protrusion 30 and the insertion hole 26a.

　ヒートシンク９には第１の取付ボス３２に連続してベース面部２６から前方に突出された複数の第１の補強突部３３が設けられている。 The heat sink 9 is provided with a plurality of first reinforcing protrusions 33 that are continuous with the first mounting bosses 32 and protrude forward from the base surface portion 26 .

　ヒートシンク９の前面側には下端寄りの位置に第２の取付用螺穴３４が形成されている。ヒートシンク９の前面側には第２の取付用螺穴３４を挟んだ反対側にそれぞれベース面部２６から前方に突出された第２の位置決めピン３５が設けられている。 A second mounting screw hole 34 is formed on the front side of the heat sink 9 near the lower end. On the front side of the heat sink 9, second positioning pins 35 are provided on the opposite side of the second mounting screw hole 34, each protruding forward from the base surface portion 26.

　ヒートシンク９の前面側にはベース面部２６からそれぞれ前方に突出された二つの第２の位置合わせピン３６と二つの第２の取付ボス３７が設けられている。第２の位置合わせピン３６と第２の取付ボス３７はそれぞれ左右に離隔して設けられ、第２の壁部２７ｂと挿通孔２６ａの間に位置されている。 Two second positioning pins 36 and two second mounting bosses 37 are provided on the front side of the heat sink 9, each protruding forward from the base surface portion 26. The second alignment pin 36 and the second attachment boss 37 are provided spaced apart from each other in the left and right directions, and are located between the second wall portion 27b and the insertion hole 26a.

　ヒートシンク９には第２の取付ボス３７に連続してベース面部２６から前方に突出された複数の第２の補強突部３８が設けられている。 The heat sink 9 is provided with a plurality of second reinforcing protrusions 38 that are continuous with the second attachment bosses 37 and protrude forward from the base surface portion 26 .

　ヒートシンク９の後面側には複数の放熱フィン３９が設けられている。放熱フィン３９はベース面部２６から後方に突出され上下に離隔して位置されると共に上下に延びる状態で左右に並んで設けられている。 A plurality of radiation fins 39 are provided on the rear side of the heat sink 9. The radiation fins 39 protrude rearward from the base surface portion 26, are spaced apart from each other vertically, and are arranged side by side in a vertically extending state.

　連結部２５は、例えば、上側に二つと下側に一つが設けられ、前後に貫通された連結孔２５ａを有している。 The connecting portion 25 has, for example, two connecting holes 25a on the upper side and one on the lower side, which are penetrated from the front and back.

　ヒートシンク９は光軸調整機構４０によってランプハウジング２に連結されている（図２及び図３参照）。光軸調整機構４０は二つのセルフロッキングナット４１と二つのアジャスティングスクリュー４２と一つのピボット受け４３と一つのピボット軸４４とによって構成されている。 The heat sink 9 is connected to the lamp housing 2 by an optical axis adjustment mechanism 40 (see FIGS. 2 and 3). The optical axis adjustment mechanism 40 includes two self-locking nuts 41, two adjusting screws 42, one pivot receiver 43, and one pivot shaft 44.

　セルフロッキングナット４１は連結孔２５ａに挿通された状態で支持され連結部２５に対して相対的に傾動可能にされている。セルフロッキングナット４１は一部がランプハウジング２に前後方向へ移動可能に支持されている。 The self-locking nut 41 is supported while being inserted into the connecting hole 25a, and is tiltable relative to the connecting portion 25. A portion of the self-locking nut 41 is supported by the lamp housing 2 so as to be movable in the front-back direction.

　アジャスティングスクリュー４２は樹脂材料によって形成され、前側略半分の部分が螺軸部４２ａとして設けられ後端寄りの部分が被支持部４２ｂとして設けられ後端部が操作部４２ｃとして設けられている。アジャスティングスクリュー４２は螺軸部４２ａがセルフロッキングナット４１に螺合され被支持部４２ｂがランプハウジング２に回転可能かつ軸方向へ移動不能な状態で支持されている。操作部４２ｃはランプハウジング２の後側に位置されている。 The adjusting screw 42 is made of a resin material, and has a front half portion as a helical shaft portion 42a, a rear end portion as a supported portion 42b, and a rear end portion as an operating portion 42c. The adjusting screw 42 has a threaded shaft portion 42a screwed into the self-locking nut 41, and a supported portion 42b supported by the lamp housing 2 in a rotatable but immovable state in the axial direction. The operating portion 42c is located on the rear side of the lamp housing 2.

　ピボット受け４３は連結部２５に連結されている。ピボット軸４４は前端部が球状部４４ａとして設けられ後側略半分の部分が結合部４４ｂとして設けられている。ピボット軸４４は球状部４４ａがピボット受け４３に相対的に回転可能な状態で連結され結合部４４ｂがランプハウジング２に結合されている。 The pivot receiver 43 is connected to the connecting portion 25. The pivot shaft 44 has a front end portion formed as a spherical portion 44a and a rear approximately half portion formed as a coupling portion 44b. The pivot shaft 44 has a spherical portion 44a connected to the pivot receiver 43 in a relatively rotatable state, and a connecting portion 44b connected to the lamp housing 2.

　光軸調整機構４０において、一方の操作部４２ｃが回転操作されて一方のアジャスティングスクリュー４２が軸回り方向へ回転されると上下方向におけるエイミング調整（光軸調整）が行われ、他方の操作部４２ｃが回転操作されて他方のアジャスティングスクリュー４２が軸回り方向へ回転されると左右方向におけるエイミング調整（光軸調整）が行われる。 In the optical axis adjustment mechanism 40, when one operating section 42c is rotated and one adjusting screw 42 is rotated in the direction around the axis, aiming adjustment (optical axis adjustment) in the vertical direction is performed, and the other operating section When the adjusting screw 42c is rotated and the other adjusting screw 42 is rotated in the direction around the axis, aiming adjustment (optical axis adjustment) in the left and right direction is performed.

　ヘッドランプユニット５において、第１の基板１０と第１のインナーレンズ１１と第１の光源１５はハイビーム用であり、第２の基板１２とリフレクター１３と第２のインナーレンズ１４と第２の光源１６はロービーム用である。 In the headlamp unit 5, the first substrate 10, first inner lens 11, and first light source 15 are for high beam, and the second substrate 12, reflector 13, second inner lens 14, and second light source are for high beam. 16 is for low beam.

　第１の基板１０には第１のネジ挿通孔１０ａと二つの第１の位置決め孔１０ｂが形成され、第１の位置決め孔１０ｂが第１のネジ挿通孔１０ａの左右両側に位置されている。第１の基板１０は第１の位置決め孔１０ｂにそれぞれ第１の位置決めピン２９が挿入されてヒートシンク９に対して位置決めされた状態において、第１のネジ挿通孔１０ａに挿通される図示しない取付ネジが第１の取付用螺穴２８に螺合されることによりヒートシンク９に取り付けられる。 A first screw insertion hole 10a and two first positioning holes 10b are formed in the first substrate 10, and the first positioning holes 10b are located on both sides of the first screw insertion hole 10a. When the first board 10 is positioned with respect to the heat sink 9 by inserting the first positioning pins 29 into the first positioning holes 10b, mounting screws (not shown) are inserted into the first screw insertion holes 10a. is attached to the heat sink 9 by being screwed into the first screw hole 28 for attachment.

　第１のインナーレンズ１１には二つの第１の取付用孔１１ａと二つの第１の位置合わせ孔１１ｂが形成され、第１の取付用孔１１ａと第１の位置合わせ孔１１ｂはそれぞれ左右に離隔して位置されている。第１のインナーレンズ１１は第１の位置合わせ孔１１ｂにそれぞれ第１の位置合わせピン３１が挿入されてヒートシンク９に対して位置決めされた状態において、第１の取付用孔１１ａに挿通される図示しない取付ネジが第１の取付ボス３２に螺合されることによりヒートシンク９に取り付けられる。 Two first mounting holes 11a and two first alignment holes 11b are formed in the first inner lens 11, and the first mounting holes 11a and the first alignment holes 11b are arranged on the left and right sides, respectively. located at a distance. The first inner lens 11 is inserted into the first mounting hole 11a in a state where the first alignment pin 31 is inserted into the first alignment hole 11b and positioned with respect to the heat sink 9. The heat sink 9 is attached to the heat sink 9 by screwing a mounting screw (not shown) into the first mounting boss 32 .

　第１のインナーレンズ１１がヒートシンク９に取り付けられた状態においては、第１のインナーレンズ１１が受け突部３０に押し付けられ第１のインナーレンズ１１の前後方向における位置が定められる。また、第１のインナーレンズ１１がヒートシンク９に取り付けられた状態においては、第１の基板１０に搭載された第１の光源１５が第１のインナーレンズ１１によって前方から覆われる。 When the first inner lens 11 is attached to the heat sink 9, the first inner lens 11 is pressed against the receiving protrusion 30, and the position of the first inner lens 11 in the front-rear direction is determined. Furthermore, when the first inner lens 11 is attached to the heat sink 9, the first light source 15 mounted on the first substrate 10 is covered from the front by the first inner lens 11.

　第２の基板１２には第２のネジ挿通孔１２ａと二つの第２の位置決め孔１２ｂが形成され、第２の位置決め孔１２ｂが第２のネジ挿通孔１２ａを挟んだ反対側に位置されている。第２の基板１２は第２の位置決め孔１２ｂにそれぞれ第２の位置決めピン３５が挿入されてヒートシンク９に対して位置決めされた状態において、第２のネジ挿通孔１２ａに挿通される図示しない取付ネジが第２の取付用螺穴３４に螺合されることによりヒートシンク９に取り付けられる。 A second screw insertion hole 12a and two second positioning holes 12b are formed in the second board 12, and the second positioning hole 12b is located on the opposite side of the second screw insertion hole 12a. There is. When the second board 12 is positioned with respect to the heat sink 9 with the second positioning pins 35 inserted into the second positioning holes 12b, mounting screws (not shown) are inserted into the second screw insertion holes 12a. is attached to the heat sink 9 by being screwed into the second screw hole 34 for attachment.

　リフレクター１３には二つの位置決め挿入孔１３ａが左右に離隔して形成されている。リフレクター１３には下方に開口された配置用切欠１３ｂが形成されている。リフレクター１３は位置決め挿入孔１３ａにそれぞれ第２の取付ボス３７が挿入されてヒートシンク９に対して位置決めされる。従って、第２の取付ボス３７はリフレクター１３のヒートシンク９に対する位置決めを行う位置決め用の突部としても機能する。 Two positioning insertion holes 13a are formed in the reflector 13, spaced apart from each other on the left and right. The reflector 13 is formed with an arrangement notch 13b that is open downward. The reflector 13 is positioned with respect to the heat sink 9 by inserting the second attachment bosses 37 into the positioning insertion holes 13a, respectively. Therefore, the second attachment boss 37 also functions as a positioning protrusion for positioning the reflector 13 with respect to the heat sink 9.

　第２のインナーレンズ１４には二つの第２の取付用孔１４ａと二つの第２の位置合わせ孔１４ｂが形成され、第２の取付用孔１４ａと第２の位置合わせ孔１４ｂはそれぞれ左右に離隔して位置されている。第２のインナーレンズ１４は第２の位置合わせ孔１４ｂにそれぞれ第２の位置合わせピン３６が挿入されてヒートシンク９に対して位置決めされた状態において、第２の取付用孔１４ａに挿通される図示しない取付ネジが第２の取付ボス３７に螺合されることによりヒートシンク９に取り付けられる。 Two second mounting holes 14a and two second positioning holes 14b are formed in the second inner lens 14, and the second mounting holes 14a and the second positioning holes 14b are arranged on the left and right sides, respectively. located at a distance. The second inner lens 14 is inserted into the second mounting hole 14a in a state where the second alignment pin 36 is inserted into the second alignment hole 14b and positioned with respect to the heat sink 9. The heat sink 9 is attached to the heat sink 9 by screwing the second attachment boss 37 into the second attachment boss 37.

　このとき第２のインナーレンズ１４はリフレクター１３を覆う状態でヒートシンク９に取り付けられ、リフレクター１３が第２の取付ボス３７に螺合された取付ネジによって第２のインナーレンズ１４と共締めによりヒートシンク９に取り付けられる。 At this time, the second inner lens 14 is attached to the heat sink 9 in a state covering the reflector 13, and the reflector 13 is fastened together with the second inner lens 14 by a mounting screw screwed into the second mounting boss 37, so that the heat sink 9 can be attached to.

　リフレクター１３がヒートシンク９に取り付けられた状態においては、第２の光源１６が配置用切欠１３ｂに位置される。また、リフレクター１３がヒートシンク９に取り付けられた状態においては、リフレクター１３が第２の補強突部３８に押し付けられリフレクター１３の前後方向における位置が定められる。従って、第２の補強突部３８はリフレクター１３を受ける受け突部としても機能する。 When the reflector 13 is attached to the heat sink 9, the second light source 16 is located in the placement notch 13b. Further, when the reflector 13 is attached to the heat sink 9, the reflector 13 is pressed against the second reinforcing protrusion 38, and the position of the reflector 13 in the front-rear direction is determined. Therefore, the second reinforcing protrusion 38 also functions as a receiving protrusion for receiving the reflector 13.

　第２のインナーレンズ１４がヒートシンク９に取り付けられた状態においては、第２のインナーレンズ１４がリフレクター１３の一部に押し付けられ第２のインナーレンズ１４の前後方向における位置が定められる。また、第２のインナーレンズ１４がヒートシンク９に取り付けられた状態においては、第２の基板１２に搭載された第２の光源１６が第２のインナーレンズ１４によって前方から覆われる。 When the second inner lens 14 is attached to the heat sink 9, the second inner lens 14 is pressed against a part of the reflector 13, and the position of the second inner lens 14 in the front-rear direction is determined. Furthermore, when the second inner lens 14 is attached to the heat sink 9, the second light source 16 mounted on the second substrate 12 is covered from the front by the second inner lens 14.

　上記のように構成されたヘッドランプユニット５において、第１の光源１５から出射された光は第１のインナーレンズ１１によって制御され第１のインナーレンズ１１及びカバー３を透過されて外部へ向けてハイビームの光として照射される。また、第２の光源１６から出射された光はリフレクター１３で反射され第２のインナーレンズ１４によって制御され第２のインナーレンズ１４及びカバー３を透過されて外部へ向けてロービームの光として照射される。 In the headlamp unit 5 configured as described above, the light emitted from the first light source 15 is controlled by the first inner lens 11, transmitted through the first inner lens 11 and the cover 3, and directed to the outside. It is emitted as high beam light. Further, the light emitted from the second light source 16 is reflected by the reflector 13, controlled by the second inner lens 14, transmitted through the second inner lens 14 and the cover 3, and irradiated to the outside as low beam light. Ru.

　＜まとめ＞
　以上に記載した通り、車輌用灯具１にあっては、アジャスティングスクリュー４２が樹脂材料によって形成され、ヒートシンク９の少なくとも外周部に補強リブとして機能する立壁部２７が設けられている。 <Summary>
As described above, in the vehicle lamp 1, the adjusting screw 42 is made of a resin material, and the standing wall portion 27 functioning as a reinforcing rib is provided at least on the outer peripheral portion of the heat sink 9.

　従って、立壁部２７によってヒートシンク９が補強されてヒートシンク９の剛性が高くなるためヒートシンク９の耐振動性が向上して樹脂材料によって形成されたアジャスティングスクリュー４２に大きな力が付与され難くなり、製造コストの低減を図った上でアジャスティングスクリュー４２の変形や破損の発生を防止することができる。 Therefore, the heat sink 9 is reinforced by the vertical wall portion 27 and the rigidity of the heat sink 9 is increased, so that the vibration resistance of the heat sink 9 is improved, and it becomes difficult to apply a large force to the adjusting screw 42 formed of a resin material. In addition to reducing costs, it is possible to prevent the adjusting screw 42 from being deformed or damaged.

　また、ヒートシンク９における本体部２４の厚みＴ１が２ｍｍにされ薄くされているため、ヒートシンク９が軽量化されており、振動等の発生時にヒートシンク９からアジャスティングスクリュー４２に付与される力が抑制され、アジャスティングスクリュー４２の変形や破損の発生を防止する効果を高めることができる。 In addition, since the thickness T1 of the main body portion 24 of the heat sink 9 is made thinner to 2 mm, the heat sink 9 is lightweight, and the force applied from the heat sink 9 to the adjusting screw 42 when vibration or the like occurs is suppressed. , it is possible to enhance the effect of preventing the adjusting screw 42 from being deformed or damaged.

　さらに、ヒートシンク９における立壁部２７の厚みＴ２も２ｍｍにされ薄くされることにより、アジャスティングスクリュー４２の変形や破損の発生を防止する効果を一層高めることができる。 Further, by reducing the thickness T2 of the vertical wall portion 27 of the heat sink 9 to 2 mm, it is possible to further enhance the effect of preventing the adjusting screw 42 from being deformed or damaged.

　尚、車輌用灯具１が二輪車に用いられる場合には、生じる振動が大きくなり易いため、本発明に係るヒートシンク９が二輪車の車輌用灯具１に使用されることにより、製造コストの低減を図った上でアジャスティングスクリュー４２の変形や破損の発生を防止すると言う特に大きな効果を得ることが可能である。 Incidentally, when the vehicle lamp 1 is used in a two-wheeled vehicle, the vibrations that occur tend to be large. Therefore, by using the heat sink 9 according to the present invention in the vehicle lamp 1 of a two-wheeled vehicle, manufacturing costs can be reduced. In addition, it is possible to obtain a particularly large effect of preventing the adjusting screw 42 from being deformed or damaged.

　また、立壁部２７がベース面部２６の厚み方向における両面から反対方向に突出されているため、ベース面部２６の厚み方向における両方向の変形に対してヒートシンク９の剛性が高まり、ヒートシンク９の耐振動性が一層高くなりアジャスティングスクリュー４２の変形や破損を防止する効果を高めることができる。 Furthermore, since the vertical wall portions 27 protrude in opposite directions from both sides in the thickness direction of the base surface portion 26, the rigidity of the heat sink 9 increases against deformation in both directions in the thickness direction of the base surface portion 26, and the vibration resistance of the heat sink 9 increases. This further increases the effect of preventing deformation and damage of the adjusting screw 42.

　さらに、ヒートシンク９にベース面部２６から突出され第１のインナーレンズ１１と第２のインナーレンズ１４をそれぞれ取り付けるための第１の取付ボス３２と第２の取付ボス３７が設けられ、ヒートシンク９にベース面部２６から突出され第１の取付ボス３２と第２の取付ボス３７にそれぞれ連続する第１の補強突部３３と第２の補強突部３８が設けられている。 Furthermore, the heat sink 9 is provided with a first attachment boss 32 and a second attachment boss 37 that protrude from the base surface portion 26 and are used to attach the first inner lens 11 and the second inner lens 14, respectively. A first reinforcing protrusion 33 and a second reinforcing protrusion 38 are provided that protrude from the surface portion 26 and are continuous to the first attachment boss 32 and the second attachment boss 37, respectively.

　従って、第１の取付ボス３２と第２の取付ボス３７と第１の補強突部３３と第２の補強突部３８が何れも補強リブとしても機能しヒートシンク９の剛性が一層高まるため、ヒートシンク９の耐振動性がより一層高くなりアジャスティングスクリュー４２の変形や破損を防止する効果をより一層高めることができる。 Therefore, the first mounting boss 32, the second mounting boss 37, the first reinforcing protrusion 33, and the second reinforcing protrusion 38 all function as reinforcing ribs, further increasing the rigidity of the heat sink 9. The vibration resistance of the adjusting screw 9 is further increased, and the effect of preventing the adjusting screw 42 from being deformed or damaged can be further enhanced.

　さらにまた、ヒートシンク９にベース面部２６から突出され第１のインナーレンズ１１が接する受け突部３０が設けられている。 Furthermore, the heat sink 9 is provided with a receiving protrusion 30 that protrudes from the base surface part 26 and comes into contact with the first inner lens 11.

　従って、受け突部３０によって第１のインナーレンズ１１の前後方向における位置が定まると共にヒートシンク９の剛性が一層高まるため、第１のインナーレンズ１１の良好な位置精度を確保した上でアジャスティングスクリュー４２の変形や破損を防止する効果を高めることができる。 Therefore, the position of the first inner lens 11 in the front-rear direction is determined by the receiving protrusion 30, and the rigidity of the heat sink 9 is further increased. The effect of preventing deformation and damage can be enhanced.

　尚、ヒートシンク９には第２のインナーレンズ１４を受ける受け突部としても機能する第２の補強突部３８が設けられているため、第２の補強突部３８によって第２のインナーレンズ１４の前後方向における位置が定まると共にヒートシンク９の剛性が一層高まる。従って、第２のインナーレンズ１４の良好な位置精度を確保した上でアジャスティングスクリュー４２の変形や破損を防止する効果を高めることもできる。 Note that the heat sink 9 is provided with a second reinforcing protrusion 38 that also functions as a receiving protrusion for receiving the second inner lens 14 . As the position in the front-rear direction is determined, the rigidity of the heat sink 9 is further increased. Therefore, while ensuring good positional accuracy of the second inner lens 14, it is also possible to enhance the effect of preventing deformation and damage of the adjusting screw 42.

　加えて、ランプハウジング２における挿通孔２６ａの開口縁に立壁部２７（第３の壁部２７ｃ）が設けられている。 In addition, a standing wall portion 27 (third wall portion 27c) is provided at the opening edge of the insertion hole 26a in the lamp housing 2.

　従って、ヒートシンク９には外周部に設けられた立壁部２７に加えて挿通孔２６ａの開口縁にも立壁部２７が設けられるため、ヒートシンク９の剛性がより一層高まり、ランプハウジング２に設けられた取付突部とヒートシンク９の干渉を回避した上でアジャスティングスクリュー４２の変形や破損を防止する効果を高めることができる。 Therefore, in addition to the standing wall part 27 provided on the outer periphery of the heat sink 9, the standing wall part 27 is also provided on the opening edge of the insertion hole 26a, so that the rigidity of the heat sink 9 is further increased. In addition to avoiding interference between the mounting protrusion and the heat sink 9, it is possible to enhance the effect of preventing deformation and damage of the adjusting screw 42.

　１…車輌用灯具、９…ヒートシンク、１０…第１の基板、１１…第１のインナーレンズ、１２…第２の基板、１４…第２のインナーレンズ、１５…第１の光源、１６…第２の光源、２６…ベース面部、２６ａ…挿通孔、２７…立壁部、３２…第１の取付ボス、３３…第１の補強突部、３７…第２の取付ボス、３８…第２の補強突部、４０…光軸調整機構、４２…アジャスティングスクリュー DESCRIPTION OF SYMBOLS 1... Vehicle lamp, 9... Heat sink, 10... First substrate, 11... First inner lens, 12... Second substrate, 14... Second inner lens, 15... First light source, 16... First 2 light source, 26... Base surface portion, 26a... Insertion hole, 27... Vertical wall portion, 32... First mounting boss, 33... First reinforcing protrusion, 37... Second mounting boss, 38... Second reinforcement Projection, 40... Optical axis adjustment mechanism, 42... Adjusting screw

Claims (5)

　光源が搭載された基板と、
　金属材料によって形成されると共に前記基板が取り付けられるベース面部を有し前記光源の点灯時に発生する熱を放出するヒートシンクと、
　樹脂材料によって形成されると共に前記光源の光軸調整を行う光軸調整機構に設けられたアジャスティングスクリューとを備え、
　前記ヒートシンクの少なくとも外周部に補強リブとして機能する立壁部が設けられた
　車輌用灯具。 A board equipped with a light source,
a heat sink that is formed of a metal material and has a base surface portion to which the substrate is attached, and emits heat generated when the light source is turned on;
an adjusting screw formed of a resin material and provided in an optical axis adjustment mechanism that adjusts the optical axis of the light source,
A vehicular lamp, wherein at least an outer peripheral portion of the heat sink is provided with a standing wall portion that functions as a reinforcing rib. 　前記立壁部が前記ベース面部の厚み方向における両面から反対方向に突出された
　請求項１に記載の車輌用灯具。 The vehicular lamp according to claim 1, wherein the standing wall portion protrudes in opposite directions from both sides in the thickness direction of the base surface portion. 　前記ヒートシンクに前記光源から出射される光が透過されるインナーレンズが取り付けられ、
　前記ヒートシンクに前記ベース面部から突出され前記インナーレンズを取り付けるための取付ボスが設けられ、
　前記ヒートシンクに前記ベース面部から突出され前記取付ボスに連続する補強突部が設けられた
　請求項１又は請求項２に記載の車輌用灯具。 An inner lens through which light emitted from the light source is transmitted is attached to the heat sink,
The heat sink is provided with a mounting boss protruding from the base surface portion for mounting the inner lens,
The vehicular lamp according to claim 1 or 2, wherein the heat sink is provided with a reinforcing protrusion that protrudes from the base surface and is continuous with the attachment boss. 　前記ヒートシンクに前記光源から出射される光が透過されるインナーレンズが取り付けられ、
　前記ヒートシンクに前記ベース面部から突出され前記インナーレンズが接する受け突部が設けられた
　請求項１又は請求項２に記載の車輌用灯具。 An inner lens through which light emitted from the light source is transmitted is attached to the heat sink,
The vehicular lamp according to claim 1 or 2, wherein the heat sink is provided with a receiving protrusion that protrudes from the base surface portion and comes into contact with the inner lens. 　ランプハウジングに取付突部が設けられ、
　前記ベース面部に前記取付突部が挿通される挿通孔が形成され、
　前記立壁部が前記挿通孔の開口縁に設けられた
　請求項１又は請求項２に記載の車輌用灯具。 A mounting protrusion is provided on the lamp housing,
An insertion hole through which the mounting protrusion is inserted is formed in the base surface portion,
The vehicle lamp according to claim 1 or 2, wherein the standing wall portion is provided at an opening edge of the insertion hole.
PCT/JP2023/012477 2022-03-29 2023-03-28 Vehicular lamp WO2023190498A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019197745A (en) * 2017-03-08 2019-11-14 株式会社小糸製作所 Vehicular lighting fixture
JP2019212635A (en) * 2019-08-22 2019-12-12 株式会社小糸製作所 Vehicle lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019197745A (en) * 2017-03-08 2019-11-14 株式会社小糸製作所 Vehicular lighting fixture
JP2019212635A (en) * 2019-08-22 2019-12-12 株式会社小糸製作所 Vehicle lamp

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