WO2023219044A1 - Vehicle lamp fitting - Google Patents

Vehicle lamp fitting Download PDF

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Publication number
WO2023219044A1
WO2023219044A1 PCT/JP2023/017172 JP2023017172W WO2023219044A1 WO 2023219044 A1 WO2023219044 A1 WO 2023219044A1 JP 2023017172 W JP2023017172 W JP 2023017172W WO 2023219044 A1 WO2023219044 A1 WO 2023219044A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
attached
light guide
reflector
shade
Prior art date
Application number
PCT/JP2023/017172
Other languages
French (fr)
Japanese (ja)
Inventor
豊 岡村
章宏 加藤
彰裕 炭家
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 WO2023219044A1 publication Critical patent/WO2023219044A1/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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/27—Attachment thereof
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/20—Direction indicator lights
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/35—Brake lights
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/55—Daytime running lights [DRL]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the technical field of a vehicular lamp having a light guide that guides and emits incident light.
  • the vehicular lamp described in Patent Document 1 is provided with a round shaft-shaped light guide that extends in a predetermined direction.
  • the light guide light is incident from an entrance surface that is one end surface in the longitudinal direction, and the incident light is emitted while being guided in the longitudinal direction.
  • the light guide is provided with an attached portion protruding in a predetermined direction at the end in the longitudinal direction, and the attached portion is attached to a mounting member, a lamp housing, etc. by screwing.
  • the light guide is formed in a shape extending in a predetermined direction, and in order to ensure the stability of the attached state, there are attached parts at both ends in the longitudinal direction. is often provided.
  • an incident surface into which light emitted from the light source enters is formed at both ends of the light guide in the longitudinal direction, a portion of the light incident from the incident surface enters the attached part. There is a risk. If part of the light is incident on the attached part, the incident light may be emitted from the attached part as unnecessary leakage light, which may affect the light distribution pattern or deteriorate the appearance.
  • an object of the vehicle lamp of the present invention is to suppress the emission of leaked light from the attached part.
  • a vehicular lamp according to the present invention includes a light source that emits light, a light guide portion that guides the incident light, and a light guide portion that is bent with respect to the light guide portion.
  • a light guide having an attached part attached to a predetermined attachment part, and a continuous part of the light guide part and the attached part has an outer circumferential dimension smaller than the outer circumferential dimension of the attached part. It was formed as a division.
  • the light incident from the incident surface is less likely to enter the attached part, the light is less likely to be emitted from the attached part, and the emission of leaked light from the attached part can be suppressed. .
  • FIG. 3 is a rear view showing a part of the light guide.
  • FIG. 7 is an enlarged front view showing a state in which the incident side end of the light guide is inserted into the insertion hole and positioned.
  • FIG. 3 is a perspective view showing the shade as seen from a different direction from FIG. 2;
  • FIG. 3 is a cross-sectional view showing a state in which the attached part is attached.
  • front, back, top, bottom, left, and right directions will be described with the direction of light emitted from the vehicle lamp being the front.
  • the directions of front, rear, top, bottom, left and right shown below are for convenience of explanation, and the implementation of the present invention is not limited to these directions.
  • the vehicle light of the present invention is preferably used as a clearance lamp, a turn signal lamp, or a daytime running lamp when it is attached to the front end of the vehicle body, and when it is attached to the rear end of the vehicle body. It is suitable for use as a tail lamp, stop lamp, or turn signal lamp.
  • the vehicular lamp 1 includes a lamp housing 2 that is open from the front or from the front to the sides, 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, and an internal space of the lamp outer casing 4 is formed as a lamp chamber 4a.
  • an inner lens 5 for controlling transmitted light
  • a light source 6 mounted on a substrate (not shown)
  • a light guide 7 for guiding the light emitted from the light source 6 (FIGS. 1 and 4). (See 3).
  • various members such as an extension may be arranged in the lamp chamber 4a.
  • the inner lens 5 is formed in a shape that extends substantially left and right, and is arranged in an intermediate region in the left and right direction of the lamp chamber 4a.
  • a diffusion step (not shown) is formed in the inner lens 5, and the light transmitted through the inner lens 5 is emitted in a diffused state by the diffusion step.
  • the light source 6 for example, a light emitting diode (LED) is used.
  • LED light emitting diode
  • the light guide 7 has a light guide part 8 extending in a predetermined direction, for example, approximately in the left-right direction, and a pair of attached parts 9 bent in a direction toward each other with respect to both longitudinal ends of the light guide part 8. For example, it is formed in a laterally symmetrical shape.
  • Both end surfaces in the longitudinal direction of the light guide section 8 are each formed as an entrance surface 10 into which the light emitted from the light source 6 is incident (see FIG. 4).
  • the entrance surface 10 is, for example, formed in a circular shape.
  • Both ends of the light guide section 8 in the longitudinal direction are provided as incident side ends 8a.
  • the front surface of the portion of the light guide section 8 excluding the incident side end 8a is formed as an output surface 11 (see FIG. 2).
  • the rear surface of the light guide section 8 is formed as a reflective surface 12 (see FIG. 4).
  • First reflective steps 13 are formed in the light guide portion 8 near both ends in the longitudinal direction (see FIG. 2).
  • the light that reaches the first reflection step 13 is reflected by the first reflection step 13 and guided by the light guide section 8 . Therefore, unnecessary light is less likely to be emitted from the light guide section 8 by the first reflection step 13, and the light can be used effectively.
  • a second reflective step 12a extending in the longitudinal direction is formed on the reflective surface 12 of the light guide portion 8 (see FIG. 4).
  • the light incident from the entrance surface 10 is reflected by the second reflection step 12a, and is emitted forward from the exit surface 11 while being guided by the light guide section 8.
  • a third reflective step 12b extending in the longitudinal direction is formed on the reflective surface 12 of the light guiding portion 8.
  • the third reflective step 12b is formed along both ends of the second reflective step 12a.
  • the light incident from the entrance surface 10 is reflected by the third reflection step 12b, and is emitted from the exit surface 11 while being guided by the light guide section 8.
  • the light reflected at the third reflection step 12b is emitted from the output surface 11 diagonally upward in the front direction or diagonally upward in the side direction. Therefore, the light is reflected at the second reflection step 12a and emitted forward from the output surface 11, and the light is reflected at the third reflection step 12b and emitted from the output surface 11 diagonally upward in front or diagonally upward laterally.
  • the light irradiates a wide range of areas from the front to the top, making it possible to improve visibility.
  • the light guide body 7 is provided with substantially flat plate-shaped auxiliary emission parts 14 that respectively protrude from both ends in the longitudinal direction of the light guide part 8 (see FIGS. 2 and 4).
  • the auxiliary output part 14 protrudes from the light guide part 8 from laterally diagonally downward to downward, and the auxiliary output part 14 has a diffusion step 14a formed on the front surface and a reflection step 14b formed on the rear surface. .
  • Some of the light emitted from the light source 6 and incident on the entrance surface 10 reaches the auxiliary output part 14, but the light that reaches the auxiliary output part 14 is reflected toward the front side by the reflection step 14b and diffused.
  • the light is emitted forward in a diffused state by step 14a. Therefore, the auxiliary emitting section 14 can make effective use of light and ensure that the desired range is irradiated with light.
  • the attached portion 9 protrudes from both ends of the light guide portion 8 in the longitudinal direction, is bent with respect to the light guide portion 8, and is formed in a horizontally elongated shape extending substantially left and right.
  • a step portion 15 that opens forward and upward is formed in the front portion of the attached portion 9, and the step portion 15 is constituted by a first surface 15a facing forward and a second surface 15b facing upward. There is.
  • the lower edge of the first surface 15a and the rear edge of the second surface 15b are continuous.
  • the continuous portion of the light guiding portion 8 and the attached portion 9 is formed as a constricted portion 16, and the constricted portion 16 is formed with, for example, two recesses 16a that are opened in opposite directions.
  • the surface forming the recess 16a is curved.
  • the outer circumferential dimension H1 of the constricted portion 16 is smaller than the outer circumferential dimension H2 of the attached portion 9 (see FIG. 4). Therefore, in the cross-sectional shape taken along the outer circumferences of the attached portion 9 and the constricted portion 16, the cross-sectional area of the constricted portion 16 is smaller than the cross-sectional area of the attached portion 9.
  • the cross-sectional area of the constricted portion 16 is made smaller than the cross-sectional area of the end portion 9a of the attached portion 9 on the constricted portion 16 side.
  • the surface forming the concave portion 16a in the constricted portion 16 is formed into a curved surface, the light guide portion 8 and the attached portion 9 are connected by the curved surface, and stress is difficult to concentrate on the constricted portion 16.
  • the constricted portion 16 can be easily processed and the light guide 7 can be easily formed.
  • the number of recesses 16a formed in the constriction 16 is arbitrary, and a plurality of recesses 16a may be formed spaced apart in the circumferential direction, or the recesses 16a may be formed around the entire circumference of the constriction 16. good.
  • the light guide 7 configured as described above is held by the reflector 17 and the shade 18 (see FIGS. 2 and 3).
  • the reflector 17 has a function of reflecting light
  • the shade 18 has a function of performing control such as blocking light or reducing the amount of light emitted.
  • the reflector 17 extends substantially in the left-right direction and is formed in a symmetrical shape.
  • the reflector 17 has left and right portions provided as end-side holding portions 19, and portions other than the end-side holding portions 19 are provided as an intermediate-side holding portion 20.
  • the reflector 17 is made of a colored material such as white, and has an arrangement recess 17a in which the reflective surface 12 of the light guide section 8 is positioned facing. .
  • the light is reflected on the surface of the light guide 17a and enters the light guide section 8 again. Therefore, it is possible to utilize light effectively.
  • the end holding portion 19 is provided with a pedestal portion 21 facing in the up-down direction, a standing wall surface portion 22 facing in the front-back direction, and a hole-forming surface portion 23 facing in the front-back direction (see FIG. 3).
  • a portion of the vertical wall surface portion 22 is provided on the rear side of the pedestal portion 21 so as to be continuous with the rear edge of the pedestal portion 21 .
  • the hole-forming surface portion 23 has an upper edge continuous with the front edge of the pedestal portion 21 on the front side of the pedestal portion 21 .
  • first receiving protrusions 24 are provided on the receiving base portion 21, spaced apart from each other in the left and right directions.
  • the first receiving protrusion 24 extends back and forth, and is formed, for example, in a substantially semi-cylindrical shape that is convex upward.
  • An insertion hole 25 is formed in the vertical wall surface portion 22 at the outer end in the left-right direction.
  • a plurality of positioning protrusions 25a protruding toward the center are provided at the opening edge of the insertion hole 25 and spaced apart in the circumferential direction (see FIG. 5).
  • a light-shielding protrusion 26 is provided extending substantially left and right from the upper end of the front surface of the vertical wall surface portion 22 (see FIG. 3).
  • the light-shielding protrusion 26 is provided as an insertion portion 26a whose outer end in the left-right direction is bent downward.
  • Position regulating protrusions 27 that protrude forward are provided on the vertical wall surface portion 22 on both sides of the light shielding protrusion 26 .
  • Two second receiving protrusions 28 are provided on the vertical wall surface portion 22 below the light-shielding protrusion 26 and are spaced apart from each other in the left and right directions.
  • a coupling hole 22 a is formed in the vertical wall surface section 22 immediately above the pedestal section 21 .
  • a positioning hole 23a is formed in the hole forming surface portion 23.
  • the shade 18 is made of a colored material, such as white, and has a function of preventing direct light emitted from the light source 6 from being seen from the outside. Therefore, in the vehicle lamp 1, the light that enters the light guide 7 from the light source 6 and is emitted from the light guide 7 is made visible from the front via the reflector 17.
  • the shade 18 has a cover base part 29 and a cover protrusion 30, and is coupled to the reflector 17 while covering the end holding part 19 from the front side (see FIGS. 2, 3, and 6).
  • the cover base portion 29 has a top surface portion 31 facing in the vertical direction and an upright surface portion 32 protruding substantially downward from the front edge of the top surface portion 31.
  • a scattering step 32a is formed on the rear surface of the vertical surface portion 32, and the scattering step 32a is located approximately in the outer half in the left-right direction (see FIG. 6).
  • part of the light incident from the light source 6 is emitted from the entrance end 8a of the light guide 8, but at least part of the emitted light is scattered (diffused) by the scattering step 32a. ), so that the so-called point light condition in which the light is concentrated at approximately one point and is visible is prevented, and visibility is improved.
  • the shade 18 is provided with an engaging protrusion 33 and an alignment protrusion 34 that respectively protrude rearward.
  • the engagement protrusion 33 protrudes rearward from the rear surface of the top surface part 31, and has a locking protrusion 33a at its tip.
  • the engaging protrusion 33 is elastically deformable substantially vertically relative to the top surface portion 31.
  • the positioning projection 34 projects rearward from the vertical surface 32 and is located on the side of the scattering step 32a.
  • the cover protrusion 30 is formed in a box shape that is open downward and rearward, and has a wall portion 35 facing in the front-rear direction and a circumferential surface portion 36 protruding rearward from the outer periphery of the wall portion 35.
  • the cover protrusion 30 is provided so as to protrude upward from the rear end side portion of the cover base portion 29.
  • two pressing protrusions 37 protrude from the rear surface of the wall portion 35.
  • the holding protrusions 37 are spaced apart from each other in the left and right directions, and are formed into a substantially trapezoidal shape whose vertical width becomes smaller toward the tip.
  • the light guide 7 is arranged with the reflective surface 12 of the light guide 8 facing the arrangement recess 17a of the reflector 17 from the front, and the incident end 8a is inserted into the insertion hole 25 of the reflector 17 from the front. (See Figure 5). At this time, the incident side end 8a is positioned with respect to the reflector 17 by engaging the plurality of positioning protrusions 25a on the outer peripheral surface. Therefore, the light source 6 is positioned opposite to the center of the entrance surface 10.
  • a plurality of positioning protrusions 25a are provided at the opening edge of the insertion hole 25 at intervals in the circumferential direction, and the positioning protrusions 25a engage with the outer circumferential surface of the entrance side end 8a.
  • the light guide section 8 is positioned on the reflector 17.
  • the light guide section 8 is positioned on the reflector 17 by inserting the entrance end 8a into the insertion hole 25, so that the light guide section 8 can be easily and accurately positioned with respect to the reflector 17.
  • the attached part 9 is inserted from the front between the first receiving protrusion 24 and the light shielding protrusion 26 of the reflector 17. (See Figure 7).
  • the attached part 9 is received by the two first receiving protrusions 24 from below and by the two second receiving protrusions 28 from the rear or side. At this time, at least a portion of the attached portion 9 is covered by the light shielding protrusion 26 from above.
  • the shade 18 is coupled to the reflector 17 (see FIG. 3).
  • the alignment protrusion 34 is inserted into the alignment hole 23a from the front side and positioned on the reflector 17, and the engagement protrusion 33 is inserted into the coupling hole 22a from the front side.
  • the engagement protrusion 33 is inserted into the coupling hole 22a from the front side, the locking protrusion 33a is slid on the upper opening edge of the coupling hole 22a, the engagement protrusion 33 is elastically deformed, and the locking protrusion 33a
  • the engagement protrusion 33 is elastically restored by passing over the upper opening edge of the coupling hole 22a.
  • the shade 18 is coupled to the reflector 17 by the engagement protrusion 33a of the engagement protrusion 33 being engaged with the rear opening edge of the coupling hole 22a.
  • the cover protrusion 30 of the shade 18 is inserted between the two position regulating protrusions 27 of the reflector 17, and the shade 18 is coupled to the reflector 17 with its position relative to the reflector 17 being regulated.
  • the pressing protrusion 37 of the shade 18 is engaged with the first surface 15a of the attached part 9, and the attached part 9 is pressed by the pressing protrusion 37 (see FIG. (see 7). At this time, the pressing protrusion 37 may also be engaged with the second surface 15b.
  • the holding protrusion 37 is provided on the shade 18, and the stepped portion 15 is formed on the attached part 9 by the continuous first surface 15a and second surface 15b facing in different directions, and the attached part 9 is pressed by the shade 18 when the pressing protrusion 37 is engaged with at least one of the first surface 15a and the second surface 15b.
  • the holding protrusion 37 of the shade 18 is engaged with the stepped portion 15 and the mounted part 9 is mounted in a state of being pressed by the reflector 17 and the shade 18, so that the mounted part 9 can be mounted in a stable state. can.
  • the attached part 9 is attached to the reflector 17 and the shade 18 by being pressed by the holding protrusion 37 of the shade 18 and also being received and pressed by the first receiving protrusion 24 and the second receiving protrusion 28 of the reflector 17. . Therefore, each part of the reflector 17 and the shade 18 functions as a mounting part to which the mounted part 9 is mounted.
  • the incident side end 8a of the light guide part 8 and the attached part 9 are covered by the shade 18 and the reflector 17, and the attached part 9 is attached to the reflector 17 and the shade 18, so that the reflector 17 and the shade are covered. It is held at 18.
  • the shade 18 When the shade 18 is coupled to the reflector 17 , the upper surface of the peripheral surface 36 of the shade 18 is positioned above the light-shielding protrusion 26 of the reflector 17 . Further, the insertion portion 26a of the light shielding protrusion 26 is inserted into the recess 16a formed in the constricted portion 16 of the light guide 7 from above.
  • the light emitted from the light source 6 enters the light guide portion 8 from the entrance surface 10.
  • the light incident on the light guide part 8 is reflected by the reflection surface 12, guided by the light guide part 8, and emitted from the output surface 11, transmitted through the inner lens 5 and the cover 3 in order, and irradiated forward.
  • the shade 18 suppresses unnecessary light from being emitted forward.
  • the constricted portion 16 is formed to be smaller than the dimensions, the area of the light incident path to the attached part 9 is small, and the incidence of light to the attached part 9 is suppressed.
  • the vehicular lamp 1 is provided with the light guide body 7 having the light guide part 8 that guides the incident light and the attached part 9 that is bent with respect to the light guide part 8.
  • the continuous portion of the light guiding portion 8 and the attached portion 9 is formed as a constricted portion 16 whose outer periphery is smaller than the outer circumferential dimension of the attached portion 9 .
  • the light incident from the incident surface 10 is less likely to enter the attached part 9, and the light is less likely to be emitted from the attached part 9. Emission of leakage light from the portion 9 can be suppressed.
  • the reflector 17 is provided with a light-shielding protrusion 26 that covers at least a part of the attached part 9, at least a part of the attached part 9 is covered by the light-shielding protrusion 26 when the attached part 9 is attached. covered.
  • the reflector 17 and the shade 18 are combined, and the mounted portion 9 is attached while being pressed by a portion of the reflector 17 and a portion of the shade 18 from at least opposite sides.
  • the attached part 9 is attached to the attachment part while being pressed by the reflector 17 and the shade 18, so that it is difficult to attach the attached part 9 to the reflector 17 or the shade 18. No mounting screws or the like are required, and the light guide 7 can be mounted easily and quickly.
  • SYMBOLS 1 Vehicle lamp, 6... Light source, 7... Light guide, 8... Light guide part, 8a... Incident side end part, 9... Attached part, 10... Incident surface, 15... Step part, 15a... First Surface, 15b...second surface, 16...constriction, 16a...recess, 17...reflector, 18...shade, 25...insertion hole, 25a...positioning protrusion, 26...light shielding protrusion, 37...pressing protrusion

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

Abstract

The present invention comprises: a light source that emits light; and a light guide body that includes a light guide section which has an entry surface into which the light emitted by the light source enters and which guides the light that has entered, and an attached section that is bent with respect to the light guide section and that is attached to a prescribed attachment section. A portion where the light guide section and the attached section are continuous is formed as a constricted section having an outer peripheral dimension less than the outer peripheral dimension of the attached section. Accordingly, it becomes difficult for the light that has entered through the entry surface to enter the attached section, thereby making it difficult for light to be emitted from the attached section and enabling suppression of the emission of leaking light from the attached section.

Description

車輌用灯具Vehicle lights
　本発明は、入射された光を導いて出射する導光体を有する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 vehicular lamp having a light guide that guides and emits incident light.
　車輌用灯具には光源から出射された光を導光体によって導いて導光体の出射面から出射するタイプがある（例えば、特許文献１参照）。 There is a type of vehicle lamp in which light emitted from a light source is guided by a light guide and then emitted from the output surface of the light guide (for example, see Patent Document 1).
　特許文献１に記載された車輌用灯具においては、所定の方向に延びる丸軸状の導光体が設けられている。導光体においては、長手方向における一端面である入射面から光が入射され、入射された光が長手方向において導かれながら出射される。 The vehicular lamp described in Patent Document 1 is provided with a round shaft-shaped light guide that extends in a predetermined direction. In the light guide, light is incident from an entrance surface that is one end surface in the longitudinal direction, and the incident light is emitted while being guided in the longitudinal direction.
　導光体には長手方向における端部に所定の方向に突出された被取付部が設けられ、被取付部がネジ止めによって取付部材やランプハウジング等に取り付けられている。 The light guide is provided with an attached portion protruding in a predetermined direction at the end in the longitudinal direction, and the attached portion is attached to a mounting member, a lamp housing, etc. by screwing.
特開２０１７－２２０３９４号公報JP 2017-220394 Publication
　ところで、導光体が用いられた車輌用灯具においては、導光体が所定の方向に延びる形状に形成されており、取付状態の安定性を確保するために長手方向における両端部に被取付部が設けられることが多い。 By the way, in a vehicle lamp using a light guide, the light guide is formed in a shape extending in a predetermined direction, and in order to ensure the stability of the attached state, there are attached parts at both ends in the longitudinal direction. is often provided.
　しかしながら、導光体の長手方向における両端部には光源から出射される光が入射される入射面が形成されているため、入射面から入射された光の一部が被取付部に入射されるおそれがある。光の一部が被取付部に入射されてしまうと、入射された光が被取付部から不要な漏れ光として出射され、配光パターンに影響を及ぼしたり見栄えの低下を来すおそれがある。 However, since an incident surface into which light emitted from the light source enters is formed at both ends of the light guide in the longitudinal direction, a portion of the light incident from the incident surface enters the attached part. There is a risk. If part of the light is incident on the attached part, the incident light may be emitted from the attached part as unnecessary leakage light, which may affect the light distribution pattern or deteriorate the appearance.
　そこで、本発明車輌用灯具は、被取付部からの漏れ光の出射を抑制することを目的とする。 Therefore, an object of the vehicle lamp of the present invention is to suppress the emission of leaked light from the attached part.
　本発明に係る車輌用灯具は、光を出射する光源と、前記光源から出射された光が入射される入射面を有し入射された光を導く導光部と前記導光部に対して屈曲され所定の取付部に取り付けられる被取付部とを有する導光体とを備え、前記導光部と前記被取付部の連続する部分は外周の寸法が前記被取付部における外周の寸法より小さい括れ部として形成されたものである。 A vehicular lamp according to the present invention includes a light source that emits light, a light guide portion that guides the incident light, and a light guide portion that is bent with respect to the light guide portion. a light guide having an attached part attached to a predetermined attachment part, and a continuous part of the light guide part and the attached part has an outer circumferential dimension smaller than the outer circumferential dimension of the attached part. It was formed as a division.
　これにより、入射面から入射された光が被取付部に入射され難くなる。 This makes it difficult for the light incident from the incident surface to enter the attached part.
　本発明によれば、入射面から入射された光が被取付部に入射され難くなるため、被取付部から光が出射され難くなり、被取付部からの漏れ光の出射を抑制することができる。 According to the present invention, since the light incident from the incident surface is less likely to enter the attached part, the light is less likely to be emitted from the attached part, and the emission of leaked light from the attached part can be suppressed. .
図２乃至図７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、車輌用灯具の概略断面図である。This figure shows an embodiment of the vehicular lamp of the present invention together with FIGS. 2 to 7, and this figure is a schematic cross-sectional view of the vehicular lamp. リフレクターとシェードと導光体の分解斜視図である。It is an exploded perspective view of a reflector, a shade, and a light guide. リフレクターとシェードと導光体の斜視図である。It is a perspective view of a reflector, a shade, and a light guide. 導光体の一部を示す背面図である。FIG. 3 is a rear view showing a part of the light guide. 導光体の入射側端部が挿通孔に挿通されて位置決めされた状態を示す拡大正面図である。FIG. 7 is an enlarged front view showing a state in which the incident side end of the light guide is inserted into the insertion hole and positioned. シェードを図２とは異なる方向から見た状態で示す斜視図である。FIG. 3 is a perspective view showing the shade as seen from a different direction from FIG. 2; 被取付部が取り付けられた状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which the attached part is attached.
　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。 Hereinafter, embodiments for implementing the vehicle lamp of the present invention will be described with reference to the accompanying drawings.
　以下には、車輌用灯具からの光の照射方向を前方として前後上下左右の方向を説明する。但し、以下に示す前後上下左右の方向は説明の便宜上のものであり、本発明の実施に関しては、これらの方向に限定されることはない。 Hereinafter, the front, back, top, bottom, left, and right directions will be described with the direction of light emitted from the vehicle lamp being the front. However, the directions of front, rear, top, bottom, left and right shown below are for convenience of explanation, and the implementation of the present invention is not limited to these directions.
　尚、本発明車輌用灯具は、例えば、車体の前端側に取り付けられる場合にはクリアランスランプやターンシグナルランプやデイタイムランニングランプとして用いられることが好適であり、車体の後端側に取り付けられる場合にはテールランプやストップランプやターンシグナルランプとして用いられることが好適である。 The vehicle light of the present invention is preferably used as a clearance lamp, a turn signal lamp, or a daytime running lamp when it is attached to the front end of the vehicle body, and when it is attached to the rear end of the vehicle body. It is suitable for use as a tail lamp, stop lamp, or turn signal lamp.
　車輌用灯具１は前方又は前方から側方に亘って開口されたランプハウジング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、灯具外筐４の内部空間が灯室４ａとして形成されている。 The vehicular lamp 1 includes a lamp housing 2 that is open from the front or from the front to the sides, 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, and an internal space of the lamp outer casing 4 is formed as a lamp chamber 4a.
　灯室４ａには透過される光を制御するインナーレンズ５と図示しない基板に搭載された光源６と光源６から出射された光を導く導光体７とが配置されている（図１乃至図３参照）。尚、灯室４ａには光源６と導光体７の他にエクステンション等の各部材が配置されていてもよい。 Arranged in the lamp chamber 4a are an inner lens 5 for controlling transmitted light, a light source 6 mounted on a substrate (not shown), and a light guide 7 for guiding the light emitted from the light source 6 (FIGS. 1 and 4). (See 3). In addition, in addition to the light source 6 and the light guide 7, various members such as an extension may be arranged in the lamp chamber 4a.
　インナーレンズ５は略左右に延びる形状に形成され、灯室４ａの左右方向における中間の領域に配置されている。インナーレンズ５には図示しない拡散ステップが形成されており、インナーレンズ５を透過される光は拡散ステップによって拡散された状態で出射される。 The inner lens 5 is formed in a shape that extends substantially left and right, and is arranged in an intermediate region in the left and right direction of the lamp chamber 4a. A diffusion step (not shown) is formed in the inner lens 5, and the light transmitted through the inner lens 5 is emitted in a diffused state by the diffusion step.
　光源６としては、例えば、発光ダイオード（ＬＥＤ：Light Emitting Diode）が用いられている。 As the light source 6, for example, a light emitting diode (LED) is used.
　導光体７は所定の方向、例えば、略左右方向に延びる導光部８と導光部８の長手方向における両端部に対して互いに近付く方向に屈曲された一対の被取付部９とを有し、例えば、左右対称な形状に形成されている。 The light guide 7 has a light guide part 8 extending in a predetermined direction, for example, approximately in the left-right direction, and a pair of attached parts 9 bent in a direction toward each other with respect to both longitudinal ends of the light guide part 8. For example, it is formed in a laterally symmetrical shape.
　導光部８の長手方向における両端面はそれぞれ光源６から出射された光が入射される入射面１０として形成されている（図４参照）。入射面１０は、例えば、円形状に形成されている。導光部８の長手方向における両端部は入射側端部８ａとして設けられている。 Both end surfaces in the longitudinal direction of the light guide section 8 are each formed as an entrance surface 10 into which the light emitted from the light source 6 is incident (see FIG. 4). The entrance surface 10 is, for example, formed in a circular shape. Both ends of the light guide section 8 in the longitudinal direction are provided as incident side ends 8a.
　導光部８において入射側端部８ａを除く部分の前側の面は出射面１１として形成されている（図２参照）。導光部８の後側の面は反射面１２として形成されている（図４参照）。 The front surface of the portion of the light guide section 8 excluding the incident side end 8a is formed as an output surface 11 (see FIG. 2). The rear surface of the light guide section 8 is formed as a reflective surface 12 (see FIG. 4).
　導光部８には長手方向における両端寄りの部分に第１の反射ステップ１３が形成されている（図２参照）。光源６から出射されて入射面１０から入射された光のうち、第１の反射ステップ１３に達した光は第１の反射ステップ１３で反射され導光部８で導かれる。従って、第１の反射ステップ１３によって導光部８から不要な光が出射され難くなり、光の有効活用を図ることができる。 First reflective steps 13 are formed in the light guide portion 8 near both ends in the longitudinal direction (see FIG. 2). Of the light emitted from the light source 6 and incident on the entrance surface 10 , the light that reaches the first reflection step 13 is reflected by the first reflection step 13 and guided by the light guide section 8 . Therefore, unnecessary light is less likely to be emitted from the light guide section 8 by the first reflection step 13, and the light can be used effectively.
　導光部８には反射面１２に長手方向に延びる第２の反射ステップ１２ａが形成されている（図４参照）。第２の反射ステップ１２ａによって入射面１０から入射された光が反射され、導光部８で導かれながら出射面１１から前方へ向けて出射される。 A second reflective step 12a extending in the longitudinal direction is formed on the reflective surface 12 of the light guide portion 8 (see FIG. 4). The light incident from the entrance surface 10 is reflected by the second reflection step 12a, and is emitted forward from the exit surface 11 while being guided by the light guide section 8.
　導光部８には反射面１２に長手方向に延びる第３の反射ステップ１２ｂが形成されている。第３の反射ステップ１２ｂは第２の反射ステップ１２ａの両端部に沿って形成されている。第３の反射ステップ１２ｂによって入射面１０から入射された光が反射され、導光部８で導かれながら出射面１１から出射される。第３の反射ステップ１２ｂで反射された光は出射面１１から前斜め上方又は横斜め上方へ向けて出射される。従って、第２の反射ステップ１２ａで反射され出射面１１から前方へ向けて出射される光と第３の反射ステップ１２ｂで反射され出射面１１から前斜め上方又は横斜め上方へ向けて出射される光とによって、前方から上方に亘る広範囲の領域に光が照射され、被視認性の向上を図ることができる。 A third reflective step 12b extending in the longitudinal direction is formed on the reflective surface 12 of the light guiding portion 8. The third reflective step 12b is formed along both ends of the second reflective step 12a. The light incident from the entrance surface 10 is reflected by the third reflection step 12b, and is emitted from the exit surface 11 while being guided by the light guide section 8. The light reflected at the third reflection step 12b is emitted from the output surface 11 diagonally upward in the front direction or diagonally upward in the side direction. Therefore, the light is reflected at the second reflection step 12a and emitted forward from the output surface 11, and the light is reflected at the third reflection step 12b and emitted from the output surface 11 diagonally upward in front or diagonally upward laterally. The light irradiates a wide range of areas from the front to the top, making it possible to improve visibility.
　導光体７には導光部８の長手方向における両端部からそれぞれ突出された略平板状の補助出射部１４が設けられている（図２及び図４参照）。補助出射部１４は横斜め下方から下方に亘って導光部８から突出され、補助出射部１４には前側の面に拡散ステップ１４ａが形成され後側の面に反射ステップ１４ｂが形成されている。光源６から出射されて入射面１０から入射された光のうち一部の光は補助出射部１４に達するが、補助出射部１４に達した光は反射ステップ１４ｂで前面側へ向けて反射され拡散ステップ１４ａによって拡散された状態で前方へ向けて出射される。従って、補助出射部１４により光の有効活用を図ることができると共に所望の範囲への光の照射状態を確保することができる。 The light guide body 7 is provided with substantially flat plate-shaped auxiliary emission parts 14 that respectively protrude from both ends in the longitudinal direction of the light guide part 8 (see FIGS. 2 and 4). The auxiliary output part 14 protrudes from the light guide part 8 from laterally diagonally downward to downward, and the auxiliary output part 14 has a diffusion step 14a formed on the front surface and a reflection step 14b formed on the rear surface. . Some of the light emitted from the light source 6 and incident on the entrance surface 10 reaches the auxiliary output part 14, but the light that reaches the auxiliary output part 14 is reflected toward the front side by the reflection step 14b and diffused. The light is emitted forward in a diffused state by step 14a. Therefore, the auxiliary emitting section 14 can make effective use of light and ensure that the desired range is irradiated with light.
　被取付部９は導光部８の長手方向における両端部から突出され、導光部８に対して屈曲され略左右に延びる横長の形状に形成されている。被取付部９には前側の部分に前方及び上方に開口された段差部１５が形成され、段差部１５は前方を向く第１の面１５ａと上方を向く第２の面１５ｂとによって構成されている。第１の面１５ａの下縁と第２の面１５ｂの後縁とが連続されている。 The attached portion 9 protrudes from both ends of the light guide portion 8 in the longitudinal direction, is bent with respect to the light guide portion 8, and is formed in a horizontally elongated shape extending substantially left and right. A step portion 15 that opens forward and upward is formed in the front portion of the attached portion 9, and the step portion 15 is constituted by a first surface 15a facing forward and a second surface 15b facing upward. There is. The lower edge of the first surface 15a and the rear edge of the second surface 15b are continuous.
　導光部８と被取付部９の連続する部分は括れ部１６として形成され、括れ部１６には、例えば、反対方向に開口された二つの凹部１６ａが形成されている。凹部１６ａを形成する面は曲面にされている。括れ部１６は外周の寸法Ｈ１が被取付部９における外周の寸法Ｈ２より小さくされている（図４参照）。従って、被取付部９と括れ部１６の各外周で切断した断面形状において、括れ部１６の断面積が被取付部９の断面積より小さくされている。特に、括れ部１６の断面積は被取付部９における括れ部１６側の端部９ａの断面積より小さくされている。 The continuous portion of the light guiding portion 8 and the attached portion 9 is formed as a constricted portion 16, and the constricted portion 16 is formed with, for example, two recesses 16a that are opened in opposite directions. The surface forming the recess 16a is curved. The outer circumferential dimension H1 of the constricted portion 16 is smaller than the outer circumferential dimension H2 of the attached portion 9 (see FIG. 4). Therefore, in the cross-sectional shape taken along the outer circumferences of the attached portion 9 and the constricted portion 16, the cross-sectional area of the constricted portion 16 is smaller than the cross-sectional area of the attached portion 9. In particular, the cross-sectional area of the constricted portion 16 is made smaller than the cross-sectional area of the end portion 9a of the attached portion 9 on the constricted portion 16 side.
　上記のように括れ部１６における凹部１６ａを形成する面が曲面に形成されているため、導光部８と被取付部９が曲面によって連続され、括れ部１６に応力が集中し難く括れ部１６の高い強度を確保することができると共に括れ部１６の加工が行い易く導光体７を容易に形成することができる。 As described above, since the surface forming the concave portion 16a in the constricted portion 16 is formed into a curved surface, the light guide portion 8 and the attached portion 9 are connected by the curved surface, and stress is difficult to concentrate on the constricted portion 16. In addition to ensuring high strength, the constricted portion 16 can be easily processed and the light guide 7 can be easily formed.
　尚、括れ部１６に形成される凹部１６ａの数は任意であり周方向に離隔して複数の凹部１６ａが形成されていてもよく、括れ部１６の全周に凹部１６ａが形成されていてもよい。 The number of recesses 16a formed in the constriction 16 is arbitrary, and a plurality of recesses 16a may be formed spaced apart in the circumferential direction, or the recesses 16a may be formed around the entire circumference of the constriction 16. good.
　上記のように構成された導光体７はリフレクター１７とシェード１８によって保持される（図２及び図３参照）。リフレクター１７は光を反射する機能を有し、シェード１８は光を遮蔽したり出射される量を減じたりする制御を行う機能を有している。 The light guide 7 configured as described above is held by the reflector 17 and the shade 18 (see FIGS. 2 and 3). The reflector 17 has a function of reflecting light, and the shade 18 has a function of performing control such as blocking light or reducing the amount of light emitted.
　リフレクター１７は略左右方向に延び、左右対称な形状に形成されている。リフレクター１７は左右両側の部分がそれぞれ端側保持部１９として設けられ端側保持部１９以外の部分が中間側保持部２０として設けられている。 The reflector 17 extends substantially in the left-right direction and is formed in a symmetrical shape. The reflector 17 has left and right portions provided as end-side holding portions 19, and portions other than the end-side holding portions 19 are provided as an intermediate-side holding portion 20.
　リフレクター１７は、例えば、白色等の色が付された材料によって形成されており、リフレクター１７には導光部８の反射面１２が対向した状態で位置される配置用凹部１７ａが形成されている。車輌用灯具１においては、光源６から入射された光の一部が意図せず導光部８から後方に出射される可能性もあるが、このような後方に出射された光は配置用凹部１７ａの表面において反射され再び導光部８に入射される。従って、光の有効活用を図ることが可能にされている。 The reflector 17 is made of a colored material such as white, and has an arrangement recess 17a in which the reflective surface 12 of the light guide section 8 is positioned facing. . In the vehicle lamp 1, there is a possibility that a part of the light incident from the light source 6 may be unintentionally emitted backward from the light guide portion 8, but such light emitted backward may be emitted from the placement recess. The light is reflected on the surface of the light guide 17a and enters the light guide section 8 again. Therefore, it is possible to utilize light effectively.
　端側保持部１９には上下方向を向く受け台部２１と前後方向を向く立壁面部２２と前後方向を向く孔形成面部２３とが設けられている（図３参照）。立壁面部２２は受け台部２１の後側において一部が受け台部２１の後縁に連続して設けられている。孔形成面部２３は受け台部２１の前側において上縁が受け台部２１の前縁に連続して設けられている。 The end holding portion 19 is provided with a pedestal portion 21 facing in the up-down direction, a standing wall surface portion 22 facing in the front-back direction, and a hole-forming surface portion 23 facing in the front-back direction (see FIG. 3). A portion of the vertical wall surface portion 22 is provided on the rear side of the pedestal portion 21 so as to be continuous with the rear edge of the pedestal portion 21 . The hole-forming surface portion 23 has an upper edge continuous with the front edge of the pedestal portion 21 on the front side of the pedestal portion 21 .
　受け台部２１には、例えば、二つの第１の受け突部２４が左右に離隔して設けられている。第１の受け突部２４は前後に延び、例えば、上方に凸の略半円柱状に形成されている。 For example, two first receiving protrusions 24 are provided on the receiving base portion 21, spaced apart from each other in the left and right directions. The first receiving protrusion 24 extends back and forth, and is formed, for example, in a substantially semi-cylindrical shape that is convex upward.
　立壁面部２２には左右方向における外側の端部に挿通孔２５が形成されている。挿通孔２５の開口縁には中心側に突出された複数の位置決め突部２５ａが周方向に離隔して設けられている（図５参照）。 An insertion hole 25 is formed in the vertical wall surface portion 22 at the outer end in the left-right direction. A plurality of positioning protrusions 25a protruding toward the center are provided at the opening edge of the insertion hole 25 and spaced apart in the circumferential direction (see FIG. 5).
　立壁面部２２の前面における上端部からは略左右に延びる遮光突部２６が設けられている（図３参照）。遮光突部２６は左右方向における外側の端部が下方に屈曲された挿入部２６ａとして設けられている。 A light-shielding protrusion 26 is provided extending substantially left and right from the upper end of the front surface of the vertical wall surface portion 22 (see FIG. 3). The light-shielding protrusion 26 is provided as an insertion portion 26a whose outer end in the left-right direction is bent downward.
　立壁面部２２には遮光突部２６の左右両側にそれぞれ前方に突出された位置規制突部２７が設けられている。立壁面部２２には遮光突部２６の下側にそれぞれ前方に突出された二つの第２の受け突部２８が左右に離隔して設けられている。立壁面部２２には受け台部２１の直ぐ上側に結合孔２２ａが形成されている。 Position regulating protrusions 27 that protrude forward are provided on the vertical wall surface portion 22 on both sides of the light shielding protrusion 26 . Two second receiving protrusions 28 are provided on the vertical wall surface portion 22 below the light-shielding protrusion 26 and are spaced apart from each other in the left and right directions. A coupling hole 22 a is formed in the vertical wall surface section 22 immediately above the pedestal section 21 .
　孔形成面部２３には位置合わせ孔２３ａが形成されている。 A positioning hole 23a is formed in the hole forming surface portion 23.
　シェード１８は二つが設けられ左右対称な形状に形成され、それぞれインナーレンズ５の左右両側に配置されている。シェード１８は、例えば、白色等の色が付された材料によって形成され、光源６から出射される直射光が外部から視認されないようにする機能を有している。従って、車輌用灯具１においては、光源６から導光体７に入射され導光体７から出射された光がリフレクター１７を介して前方から視認可能にされている。 Two shades 18 are provided and formed in a symmetrical shape, and are placed on both left and right sides of the inner lens 5, respectively. The shade 18 is made of a colored material, such as white, and has a function of preventing direct light emitted from the light source 6 from being seen from the outside. Therefore, in the vehicle lamp 1, the light that enters the light guide 7 from the light source 6 and is emitted from the light guide 7 is made visible from the front via the reflector 17.
　シェード１８は覆いベース部２９と覆い突部３０を有し、端側保持部１９を前側から覆う状態でリフレクター１７に結合される（図２、図３及び図６参照）。 The shade 18 has a cover base part 29 and a cover protrusion 30, and is coupled to the reflector 17 while covering the end holding part 19 from the front side (see FIGS. 2, 3, and 6).
　覆いベース部２９は上下方向を向く天面部３１と天面部３１の前縁から略下方に突出された立面部３２とを有している。立面部３２には後面に散乱ステップ３２ａが形成され、散乱ステップ３２ａは左右方向における外側の略半分の部分に位置されている（図６参照）。 The cover base portion 29 has a top surface portion 31 facing in the vertical direction and an upright surface portion 32 protruding substantially downward from the front edge of the top surface portion 31. A scattering step 32a is formed on the rear surface of the vertical surface portion 32, and the scattering step 32a is located approximately in the outer half in the left-right direction (see FIG. 6).
　車輌用灯具１においては、光源６から入射された光の一部が導光部８の入射側端部８ａから出射されるが、出射された光の少なくとも一部が散乱ステップ３２ａによって散乱（拡散）されるため、光が略一点に集中して視認される所謂点光りの状態にならず、被視認性の向上が図られる。 In the vehicle lamp 1, part of the light incident from the light source 6 is emitted from the entrance end 8a of the light guide 8, but at least part of the emitted light is scattered (diffused) by the scattering step 32a. ), so that the so-called point light condition in which the light is concentrated at approximately one point and is visible is prevented, and visibility is improved.
　シェード１８にはそれぞれ後方に突出された係合突部３３と位置合わせ突部３４が設けられている。係合突部３３は天面部３１の後面から後方に突出され、先端部に係止突片３３ａを有している。係合突部３３は天面部３１に対して略上下方向に弾性変形可能にされている。位置合わせ突部３４は立面部３２から後方に突出され、散乱ステップ３２ａの側方に位置されている。 The shade 18 is provided with an engaging protrusion 33 and an alignment protrusion 34 that respectively protrude rearward. The engagement protrusion 33 protrudes rearward from the rear surface of the top surface part 31, and has a locking protrusion 33a at its tip. The engaging protrusion 33 is elastically deformable substantially vertically relative to the top surface portion 31. The positioning projection 34 projects rearward from the vertical surface 32 and is located on the side of the scattering step 32a.
　覆い突部３０は下方及び後方に開口された箱状に形成され、前後方向を向く壁面部３５と壁面部３５の外周縁から後方に突出された周面部３６とを有している。覆い突部３０は覆いベース部２９の後端側の部分から上方に突出された状態で設けられている。 The cover protrusion 30 is formed in a box shape that is open downward and rearward, and has a wall portion 35 facing in the front-rear direction and a circumferential surface portion 36 protruding rearward from the outer periphery of the wall portion 35. The cover protrusion 30 is provided so as to protrude upward from the rear end side portion of the cover base portion 29.
　壁面部３５の後面からは、例えば、二つの押さえ突部３７が突出されている。押さえ突部３７は左右に離隔して設けられ、先端へ行くに従って上下の幅が小さくなる略台形状に形成されている。 For example, two pressing protrusions 37 protrude from the rear surface of the wall portion 35. The holding protrusions 37 are spaced apart from each other in the left and right directions, and are formed into a substantially trapezoidal shape whose vertical width becomes smaller toward the tip.
　以下に、導光体７の取付について説明する。 The attachment of the light guide 7 will be explained below.
　導光体７は導光部８の反射面１２がリフレクター１７の配置用凹部１７ａに前側から対向した状態で配置され、入射側端部８ａがリフレクター１７の挿通孔２５に前側から挿通される（図５参照）。このとき入射側端部８ａは外周面に複数の位置決め突部２５ａが係合されてリフレクター１７に対して位置決めされる。従って、光源６が入射面１０の中心部に対向して位置される。 The light guide 7 is arranged with the reflective surface 12 of the light guide 8 facing the arrangement recess 17a of the reflector 17 from the front, and the incident end 8a is inserted into the insertion hole 25 of the reflector 17 from the front. (See Figure 5). At this time, the incident side end 8a is positioned with respect to the reflector 17 by engaging the plurality of positioning protrusions 25a on the outer peripheral surface. Therefore, the light source 6 is positioned opposite to the center of the entrance surface 10.
　このように、車輌用灯具１においては、挿通孔２５の開口縁に複数の位置決め突部２５ａが周方向に離隔して設けられ、位置決め突部２５ａが入射側端部８ａの外周面に係合されることにより導光部８がリフレクター１７に位置決めされる。 In this way, in the vehicle lamp 1, a plurality of positioning protrusions 25a are provided at the opening edge of the insertion hole 25 at intervals in the circumferential direction, and the positioning protrusions 25a engage with the outer circumferential surface of the entrance side end 8a. As a result, the light guide section 8 is positioned on the reflector 17.
　従って、挿通孔２５に入射側端部８ａが挿通されることにより導光部８がリフレクター１７に位置決めされるため、導光部８のリフレクター１７に対する位置決めを容易かつ正確に行うことができる。 Therefore, the light guide section 8 is positioned on the reflector 17 by inserting the entrance end 8a into the insertion hole 25, so that the light guide section 8 can be easily and accurately positioned with respect to the reflector 17.
　導光体７の導光部８がリフレクター１７の配置用凹部１７ａに配置されるときには、被取付部９がリフレクター１７の第１の受け突部２４と遮光突部２６の間に前側から挿入される（図７参照）。被取付部９は二つの第１の受け突部２４に下側から受けられると共に二つの第２の受け突部２８に後方又は側方から受けられる。このとき被取付部９は少なくとも一部が遮光突部２６によって上方から覆われる。 When the light guide part 8 of the light guide body 7 is arranged in the arrangement recess 17a of the reflector 17, the attached part 9 is inserted from the front between the first receiving protrusion 24 and the light shielding protrusion 26 of the reflector 17. (See Figure 7). The attached part 9 is received by the two first receiving protrusions 24 from below and by the two second receiving protrusions 28 from the rear or side. At this time, at least a portion of the attached portion 9 is covered by the light shielding protrusion 26 from above.
　上記のように導光体７がリフレクター１７に配置された状態において、シェード１８がリフレクター１７に結合される（図３参照）。シェード１８は位置合わせ突部３４が位置合わせ孔２３ａに前側から挿入されてリフレクター１７に位置決めされた状態で係合突部３３が結合孔２２ａに前側から挿入される。係合突部３３が結合孔２２ａに前側から挿入されるときには、係止突片３３ａが結合孔２２ａの上側開口縁に摺動されて係合突部３３が弾性変形され、係止突片３３ａが結合孔２２ａの上側開口縁を乗り越えることにより係合突部３３が弾性復帰される。シェード１８は係合突部３３の係止突片３３ａが結合孔２２ａの後側開口縁に係止されることによりリフレクター１７に結合される。 With the light guide 7 disposed on the reflector 17 as described above, the shade 18 is coupled to the reflector 17 (see FIG. 3). In the shade 18, the alignment protrusion 34 is inserted into the alignment hole 23a from the front side and positioned on the reflector 17, and the engagement protrusion 33 is inserted into the coupling hole 22a from the front side. When the engagement protrusion 33 is inserted into the coupling hole 22a from the front side, the locking protrusion 33a is slid on the upper opening edge of the coupling hole 22a, the engagement protrusion 33 is elastically deformed, and the locking protrusion 33a The engagement protrusion 33 is elastically restored by passing over the upper opening edge of the coupling hole 22a. The shade 18 is coupled to the reflector 17 by the engagement protrusion 33a of the engagement protrusion 33 being engaged with the rear opening edge of the coupling hole 22a.
　このときシェード１８は覆い突部３０がリフレクター１７の二つの位置規制突部２７の間に挿入され、リフレクター１７に対する位置が規制された状態でリフレクター１７に結合される。 At this time, the cover protrusion 30 of the shade 18 is inserted between the two position regulating protrusions 27 of the reflector 17, and the shade 18 is coupled to the reflector 17 with its position relative to the reflector 17 being regulated.
　シェード１８がリフレクター１７に結合された状態においては、シェード１８の押さえ突部３７が被取付部９の第１の面１５ａに係合され、被取付部９が押さえ突部３７によって押さえられる（図７参照）。このとき押さえ突部３７は第２の面１５ｂにも係合されていてもよい。 When the shade 18 is coupled to the reflector 17, the pressing protrusion 37 of the shade 18 is engaged with the first surface 15a of the attached part 9, and the attached part 9 is pressed by the pressing protrusion 37 (see FIG. (see 7). At this time, the pressing protrusion 37 may also be engaged with the second surface 15b.
　このようにシェード１８に押さえ突部３７が設けられ、被取付部９に異なる方向を向く連続した第１の面１５ａと第２の面１５ｂによって構成された段差部１５が形成され、被取付部９は押さえ突部３７が第１の面１５ａ又は第２の面１５ｂの少なくとも一方に係合されることによりシェード１８に押さえられる。 In this way, the holding protrusion 37 is provided on the shade 18, and the stepped portion 15 is formed on the attached part 9 by the continuous first surface 15a and second surface 15b facing in different directions, and the attached part 9 is pressed by the shade 18 when the pressing protrusion 37 is engaged with at least one of the first surface 15a and the second surface 15b.
　従って、シェード１８の押さえ突部３７が段差部１５に係合されて被取付部９がリフレクター１７とシェード１８によって押さえられた状態で取り付けられるため、被取付部９を安定した状態で取り付けることができる。 Therefore, the holding protrusion 37 of the shade 18 is engaged with the stepped portion 15 and the mounted part 9 is mounted in a state of being pressed by the reflector 17 and the shade 18, so that the mounted part 9 can be mounted in a stable state. can.
　被取付部９はシェード１８の押さえ突部３７に押さえられると共にリフレクター１７の第１の受け突部２４と第２の受け突部２８によって受けられて押さえられることによりリフレクター１７とシェード１８に取り付けられる。従って、リフレクター１７とシェード１８の各一部は被取付部９が取り付けられる取付部として機能する。 The attached part 9 is attached to the reflector 17 and the shade 18 by being pressed by the holding protrusion 37 of the shade 18 and also being received and pressed by the first receiving protrusion 24 and the second receiving protrusion 28 of the reflector 17. . Therefore, each part of the reflector 17 and the shade 18 functions as a mounting part to which the mounted part 9 is mounted.
　導光体７は導光部８の入射側端部８ａと被取付部９とがシェード１８とリフレクター１７によって覆われ、被取付部９がリフレクター１７とシェード１８に取り付けられることによりリフレクター１７とシェード１８に保持される。 In the light guide 7, the incident side end 8a of the light guide part 8 and the attached part 9 are covered by the shade 18 and the reflector 17, and the attached part 9 is attached to the reflector 17 and the shade 18, so that the reflector 17 and the shade are covered. It is held at 18.
　シェード１８がリフレクター１７に結合された状態においては、シェード１８における周面部３６の上面部がリフレクター１７における遮光突部２６の上側に位置される。また、遮光突部２６の挿入部２６ａが導光体７の括れ部１６に形成された凹部１６ａに上側から挿入される。 When the shade 18 is coupled to the reflector 17 , the upper surface of the peripheral surface 36 of the shade 18 is positioned above the light-shielding protrusion 26 of the reflector 17 . Further, the insertion portion 26a of the light shielding protrusion 26 is inserted into the recess 16a formed in the constricted portion 16 of the light guide 7 from above.
　上記のように構成された車輌用灯具１において、光源６から出射された光は入射面１０から導光部８に入射される。導光部８に入射された光は反射面１２で反射されながら導光部８で導かれ出射面１１から出射され、インナーレンズ５とカバー３を順に透過されて前方へ向けて照射される。このとき被取付部９と入射側端部８ａがシェード１８によって覆われているため、シェード１８によって不要な光の前方へ向けての出射が抑制される。 In the vehicle lamp 1 configured as described above, the light emitted from the light source 6 enters the light guide portion 8 from the entrance surface 10. The light incident on the light guide part 8 is reflected by the reflection surface 12, guided by the light guide part 8, and emitted from the output surface 11, transmitted through the inner lens 5 and the cover 3 in order, and irradiated forward. At this time, since the attached portion 9 and the incident side end 8a are covered by the shade 18, the shade 18 suppresses unnecessary light from being emitted forward.
　入射面１０から光が入射されたときには、入射された光の一部が被取付部９に入射される可能性があるが、導光体７には外周の寸法が被取付部９における外周の寸法より小さくされた括れ部１６が形成されているため、被取付部９への光の入射経路の面積が小さく被取付部９への光の入射が抑制される。 When light enters from the entrance surface 10 , there is a possibility that a part of the incident light enters the attached part 9 . Since the constricted portion 16 is formed to be smaller than the dimensions, the area of the light incident path to the attached part 9 is small, and the incidence of light to the attached part 9 is suppressed.
　以上に記載した通り、車輌用灯具１にあっては、入射された光を導く導光部８と導光部８に対して屈曲された被取付部９とを有する導光体７が設けられ、導光部８と被取付部９の連続する部分は外周の寸法が被取付部９における外周の寸法より小さい括れ部１６として形成されている。 As described above, the vehicular lamp 1 is provided with the light guide body 7 having the light guide part 8 that guides the incident light and the attached part 9 that is bent with respect to the light guide part 8. The continuous portion of the light guiding portion 8 and the attached portion 9 is formed as a constricted portion 16 whose outer periphery is smaller than the outer circumferential dimension of the attached portion 9 .
　従って、入射面１０から入射された光が被取付部９に入射され難くなるため、被取付部９から光が出射され難くなり、被取付部９の安定した取付状態を確保した上で被取付部９からの漏れ光の出射を抑制することができる。 Therefore, the light incident from the incident surface 10 is less likely to enter the attached part 9, and the light is less likely to be emitted from the attached part 9. Emission of leakage light from the portion 9 can be suppressed.
　また、リフレクター１７に被取付部９の少なくとも一部を覆う遮光突部２６が設けられているため、被取付部９が取り付けられた状態において被取付部９の少なくとも一部が遮光突部２６によって覆われる。 Further, since the reflector 17 is provided with a light-shielding protrusion 26 that covers at least a part of the attached part 9, at least a part of the attached part 9 is covered by the light-shielding protrusion 26 when the attached part 9 is attached. covered.
　従って、被取付部９から出射される可能性のある光が被取付部９を取り付けるためのリフレクター１７に設けられた遮光突部２６によって遮蔽され、部品点数の増大を来すことなく不要な光の出射を一層低減することができる。 Therefore, light that may be emitted from the attached part 9 is blocked by the light shielding protrusion 26 provided on the reflector 17 for attaching the attached part 9, and unnecessary light is emitted without increasing the number of parts. The emission of can be further reduced.
　さらに、車輌用灯具１においては、リフレクター１７とシェード１８が結合され、被取付部９がリフレクター１７の一部とシェード１８の一部とによって少なくとも反対側から押さえられた状態で取り付けられている。 Further, in the vehicular lamp 1, the reflector 17 and the shade 18 are combined, and the mounted portion 9 is attached while being pressed by a portion of the reflector 17 and a portion of the shade 18 from at least opposite sides.
　従って、リフレクター１７とシェード１８が結合された状態において被取付部９がリフレクター１７とシェード１８によって押さえられた状態で取付部に取り付けられるため、被取付部９をリフレクター１７やシェード１８に取り付けるための取付ネジ等が必要にならず、導光体７を容易かつ迅速に取り付けることができる。 Therefore, when the reflector 17 and the shade 18 are combined, the attached part 9 is attached to the attachment part while being pressed by the reflector 17 and the shade 18, so that it is difficult to attach the attached part 9 to the reflector 17 or the shade 18. No mounting screws or the like are required, and the light guide 7 can be mounted easily and quickly.
　１…車輌用灯具、６…光源、７…導光体、８…導光部、８ａ…入射側端部、９…被取付部、１０…入射面、１５…段差部、１５ａ…第１の面、１５ｂ…第２の面、１６…括れ部、１６ａ…凹部、１７…リフレクター、１８…シェード、２５…挿通孔、２５ａ…位置決め突部、２６…遮光突部、３７…押さえ突部 DESCRIPTION OF SYMBOLS 1... Vehicle lamp, 6... Light source, 7... Light guide, 8... Light guide part, 8a... Incident side end part, 9... Attached part, 10... Incident surface, 15... Step part, 15a... First Surface, 15b...second surface, 16...constriction, 16a...recess, 17...reflector, 18...shade, 25...insertion hole, 25a...positioning protrusion, 26...light shielding protrusion, 37...pressing protrusion

Claims (6)

  1. 　光を出射する光源と、
    　前記光源から出射された光が入射される入射面を有し入射された光を導く導光部と前記導光部に対して屈曲され所定の取付部に取り付けられる被取付部とを有する導光体とを備え、
    　前記導光部と前記被取付部の連続する部分は外周の寸法が前記被取付部における外周の寸法より小さい括れ部として形成された
    　車輌用灯具。     a light source that emits light;
    A light guide having a light guide section that has an entrance surface into which light emitted from the light source is incident and guides the incident light, and an attached section that is bent with respect to the light guide section and attached to a predetermined attachment section. equipped with a body,
    A vehicular lamp, wherein a continuous portion of the light guiding portion and the attached portion is formed as a constricted portion having an outer circumference smaller than an outer circumferential dimension of the attached portion.
  2. 　前記括れ部には外方に開口された凹部が形成され、
    　前記括れ部における前記凹部を形成する面が曲面にされた
    　請求項１に記載の車輌用灯具。     A concave portion opened outward is formed in the constricted portion,
    The vehicular lamp according to claim 1, wherein a surface forming the concave portion in the constricted portion is a curved surface.
  3. 　光を反射するリフレクターと光を制御するシェードとが設けられ、
    　前記リフレクターと前記シェードが結合され、
    　前記被取付部が前記リフレクターの一部と前記シェードの一部とによって少なくとも反対側から押さえられた状態で取り付けられた
    　請求項１に記載の車輌用灯具。     It is equipped with a reflector that reflects light and a shade that controls light.
    the reflector and the shade are combined;
    The vehicular lamp according to claim 1, wherein the mounted portion is mounted while being pressed from at least opposite sides by a portion of the reflector and a portion of the shade.
  4. 　前記シェードに押さえ突部が設けられ、
    　前記被取付部に異なる方向を向く連続した第１の面と第２の面によって構成された段差部が形成され、
    　前記被取付部は前記押さえ突部が前記第１の面又は前記第２の面の少なくとも一方に係合されることにより前記シェードに押さえられる
    　請求項３に記載の車輌用灯具。     The shade is provided with a pressing protrusion,
    A step portion is formed on the attached portion, and is configured by a continuous first surface and a second surface facing in different directions,
    The vehicular lamp according to claim 3, wherein the attached portion is pressed by the shade by the pressing protrusion being engaged with at least one of the first surface and the second surface.
  5. 　前記導光部は前記入射面を有する部分が入射側端部として設けられ、
    　前記リフレクターに前記入射側端部が挿通される挿通孔が形成され、
    　前記挿通孔の開口縁に中心側に突出された複数の位置決め突部が周方向に離隔して設けられ、
    　前記複数の位置決め突部が前記入射側端部の外周面に係合されることにより前記導光部が前記リフレクターに位置決めされる
    　請求項３又は請求項４に記載の車輌用灯具。     The light guide portion has a portion having the incident surface as an incident side end,
    an insertion hole is formed in the reflector, through which the incident end is inserted;
    A plurality of positioning protrusions protruding toward the center are provided on the opening edge of the insertion hole and spaced apart in the circumferential direction,
    The vehicular lamp according to claim 3 or 4, wherein the light guide section is positioned on the reflector by engaging the plurality of positioning protrusions with the outer circumferential surface of the incident side end.
  6. 　前記リフレクターに前記被取付部の少なくとも一部を覆う遮光突部が設けられた
    　請求項３又は請求項４に記載の車輌用灯具。     The vehicular lamp according to claim 3 or 4, wherein the reflector is provided with a light-shielding protrusion that covers at least a portion of the attached portion.
PCT/JP2023/017172 2022-05-13 2023-05-02 Vehicle lamp fitting WO2023219044A1 (en)

Applications Claiming Priority (2)

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JP2022079800 2022-05-13
JP2022-079800 2022-05-13

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170234500A1 (en) * 2014-10-14 2017-08-17 Valeo Lighting Hubei Technical Center Co. Ltd. Light guiding device and vehicle lamp
JP2017195051A (en) * 2016-04-19 2017-10-26 本田技研工業株式会社 Vehicle illuminating device
JP2020071914A (en) * 2018-10-29 2020-05-07 株式会社小糸製作所 Vehicular lighting fixture
JP2021177451A (en) * 2020-05-07 2021-11-11 株式会社小糸製作所 Vehicular lighting fixture
CN215216050U (en) * 2021-07-01 2021-12-17 上海常诚车灯科技有限公司 Light guide structure for preventing shielding area

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170234500A1 (en) * 2014-10-14 2017-08-17 Valeo Lighting Hubei Technical Center Co. Ltd. Light guiding device and vehicle lamp
JP2017195051A (en) * 2016-04-19 2017-10-26 本田技研工業株式会社 Vehicle illuminating device
JP2020071914A (en) * 2018-10-29 2020-05-07 株式会社小糸製作所 Vehicular lighting fixture
JP2021177451A (en) * 2020-05-07 2021-11-11 株式会社小糸製作所 Vehicular lighting fixture
CN215216050U (en) * 2021-07-01 2021-12-17 上海常诚车灯科技有限公司 Light guide structure for preventing shielding area

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