WO2023026865A1 - 車輌用灯具 - Google Patents

車輌用灯具 Download PDF

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Publication number
WO2023026865A1
WO2023026865A1 PCT/JP2022/030597 JP2022030597W WO2023026865A1 WO 2023026865 A1 WO2023026865 A1 WO 2023026865A1 JP 2022030597 W JP2022030597 W JP 2022030597W WO 2023026865 A1 WO2023026865 A1 WO 2023026865A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
light guide
emitted
guide
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2022/030597
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
洋希 室伏
祐樹 渡邊
太郎 藤澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
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 Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Priority to CN202280057012.0A priority Critical patent/CN117836556A/zh
Priority to JP2023543805A priority patent/JP7814397B2/ja
Publication of WO2023026865A1 publication Critical patent/WO2023026865A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F21S43/19—Attachment of light sources or lamp holders
    • 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
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • 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
    • 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
    • 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
    • F21W2103/55—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 vehicle lamp having a light guide that guides and irradiates incident light in a predetermined direction.
  • a light source and a plurality of light guides are arranged inside a lamp outer casing composed of a cover and a lamp housing.
  • a lamp outer casing composed of a cover and a lamp housing.
  • There is a type that irradiates from the surface toward the outside see, for example, Patent Documents 1 and 2).
  • two light sources and two light guides are provided, and light is incident on the first light guide from the first light source, Light is incident on the first light guide from the second first light source, light emitted from the first light source is emitted outward from the emission surface of the first light guide, and the second light is emitted from the first light guide.
  • the light emitted from the light source is emitted outward from the emission surface of the second light guide.
  • the light emission position (light source) and the light irradiation position toward the outside (irradiation surface of the light guide) are different. can be improved, and a highly designed light distribution pattern can be formed.
  • the light is guided to a desired position by each of the light guides and irradiated, so that the light can be directed to a wide area and irradiated. made possible.
  • light having different functions may be emitted from one of the light guides and the other light guide.
  • light is emitted as a turn signal lamp indicating the traveling direction of the vehicle, and light as a clearance lamp indicating the presence of the vehicle and the size in the width direction is emitted from the other light guide.
  • a vehicle lamp includes a first light source that emits light, a second light source that emits light, and a first light source that guides the light emitted from the first light source and irradiates the guided light.
  • a second light guide that guides light emitted from the second light source and irradiates light having a different function from light emitted from the first light guide; and a light shielding wall positioned between the second light source and the second light source.
  • the light shielding wall blocks the light emitted from the first light source from traveling toward the second light guide, and prevents the light emitted from the second light source from traveling toward the first light guide. Light travel is shielded.
  • the light shielding wall shields the light emitted from the first light source from traveling toward the second light guide and guides the light emitted from the second light source to the first light guide. Since the light is shielded from traveling toward the body side, it is possible to prevent deterioration in functionality and ensure an appropriate light irradiation state.
  • FIGS. 2 to 8 An embodiment of the vehicle lamp of the present invention is shown together with FIGS. 2 to 8, and this figure is an exploded perspective view of the vehicle lamp.
  • 1 is a plan view of a vehicle lamp
  • FIG. 3 is a perspective view showing a state in which a portion of the marker lamp unit is omitted
  • Fig. 3 is an exploded perspective view showing the indicator lamp unit with a part thereof omitted
  • FIG. 4 is a diagram showing a positioning recess of a heat sink and a positioning protrusion of a shade
  • It is a front view which shows a heat sink and a circuit board.
  • FIG. 10 is a front view showing a state in which the position of the light guide is restricted by the holding cylinder portion of the shade; It is a sectional view showing the physical relationship of a light guide and a light source.
  • the vehicle lamp 1 is attached, for example, to the left and right ends of the front end of the vehicle body, and is used as a so-called combination lamp that functions as a vehicle headlamp and a vehicle marker lamp.
  • the vehicle lamp 1 is not limited to a combination lamp, and a single lamp that functions as a vehicle headlight and a vehicle marker light as long as it has a configuration having a plurality of light sources and a plurality of light guides. It can be either a single lamp or a combination lamp.
  • a vehicle lamp 1 used as a combination lamp having functions of a headlamp, a turn signal lamp, a daytime running lamp, and a clearance lamp will be described.
  • a vehicle lamp 1 includes a lamp housing 2 having an opening extending from the front to the side and a cover 3 closing the opening of the lamp housing 2 (see FIGS. 1 and 2).
  • a lamp housing 4 is formed by the lamp housing 2 and the cover 3, and an internal space of the lamp housing 4 is formed as a lamp chamber.
  • the lamp outer housing 4 is provided as a main portion 4a that is inclined so that the portion other than the outer end portion in the left-right direction is gently displaced rearward from the inner side to the outer side in the left-right direction.
  • An end portion is provided as an outer end portion 4b formed in a shape projecting substantially rearward from the main portion 4a.
  • the lamp housing 2 is provided with a holding protrusion 5 at a portion closer to the inside in the left-right direction (see FIG. 1).
  • the holding protrusion 5 is formed in a shape protruding substantially laterally inside the lamp housing 4 and has a holding groove 5a that is opened laterally and forwardly.
  • the lamp housing 2 is formed with a mounting hole 2a penetrating substantially in the front-rear direction at the outer end portion in the left-right direction.
  • the lamp housing 2 is provided with a bracket mounting portion 6 below the mounting hole 2a.
  • the lamp housing 2 is provided with three mechanism connecting portions (not shown), and each of the mechanism connecting portions is attached with a mechanism constituting portion constituting an aiming mechanism to be described later.
  • a bracket 7 is attached to the bracket attachment portion 6 .
  • the bracket 7 has a holding portion 8 projecting substantially forward from its upper end.
  • the holding portion 8 is formed with a holding groove 8a penetrating in the left and right direction and opening forward.
  • a headlamp unit 9 functioning as a headlamp is arranged inside the main portion 4a of the lamp housing 4. As shown in FIG.
  • the headlamp unit 9 has a holder 10 , a plurality of light irradiation sections 11 and a lamp cover 12 .
  • the holder 10 includes, for example, a body portion 10a formed in a horizontally long shape, supported portions 10b, 10b, and 10b projecting in predetermined directions from the body portion 10a, and restricted projections projecting leftward or rightward. It has parts 10c and 10c.
  • the holder 10 is vertically attached to the lamp housing 2 via mechanism-constituting portions 13, 13, 13, in which supported portions 10b, 10b, 10b respectively constitute an aiming mechanism, such as two adjusting screws or one pivot fulcrum. and tiltable in the left-right direction.
  • the mechanism-constituting portions 13, 13, 13 are connected to the mechanism-connecting portion of the lamp housing 2 in a rotatable state.
  • the headlight unit 9 is tilted vertically about the pivot fulcrum by rotating one of the adjusting screws, and the aiming adjustment in the vertical direction is performed, and the other adjusting screw is rotated.
  • the camera is tilted in the left-right direction about the pivot fulcrum as a fulcrum, and aiming adjustment in the left-right direction is performed.
  • the holder 10 is held by a bracket 7 in which one of the regulated protrusions 10c is inserted into the holding groove 5a of the holding protrusion 5 provided on the lamp housing 2, and the other regulated protrusion 10c is attached to the lamp housing 2. It is inserted into the holding groove 8 a of the portion 8 .
  • the vertical width of one of the regulated projections 10c and the vertical width of the holding groove 5a are substantially the same, and the vertical width of the other regulated projection 10c and the vertical width of the holding groove 8a are substantially the same. It is Therefore, for example, even when vibration or the like that occurs while the vehicle is traveling is transmitted to the headlight unit 9, the holding projection 5 and the holding portion 8 suppress the displacement of the headlight unit 9 in the vertical direction.
  • the headlight unit 9 can be smoothly tilted with respect to the lamp housing 2 during aiming adjustment. It is possible to irradiate light with an appropriate light distribution pattern without interfering with the aiming adjustment of the headlamp unit 9 and regardless of the occurrence of vibrations while the vehicle is running.
  • one of the restricted projections 10c is inserted into the holding projection 5 which is a part of the lamp housing 2, and the other of the restricted projections 10c is inserted into the bracket 7 attached to the lamp housing 2.
  • the displacement of the headlamp unit 9 is suppressed by a configuration in which both of the regulated protrusions 10c and 10c are inserted into a part of the lamp housing 2. may be suppressed, and displacement of the headlamp unit 9 may be suppressed by a configuration in which both of the regulated protrusions 10c and 10c are inserted into members attached to the lamp housing 2 .
  • the light irradiation unit 11 has, for example, a light source, a reflector, a projection lens, and the like.
  • the light irradiation units 11, 11 are attached to and held by the holder 10 in a state of being left and right separated.
  • two light irradiation units 11 are provided, one of which is used as the low beam light irradiation unit 11 and the other is used as the high beam light irradiation unit 11 . Therefore, when the low beam is emitted, light is emitted only from one light emitting portion 11, and when the high beam is emitted, light is emitted from both the one light emitting portion 11 and the other light emitting portion 11. be done.
  • the number of light irradiation units 11 is not limited to two, and the number of light irradiation units 11 is arbitrary. Further, in the vehicle lamp 1, other types of light irradiation units 11 may be used in addition to the light irradiation unit 11 for low beam and the light irradiation unit 11 for high beam. As another light irradiation unit 11, for example, a variable light distribution type so-called adaptive driving beam (ADB) that has a plurality of light sources and controls turning on and off of each light source according to the presence of oncoming vehicles, preceding vehicles, pedestrians, etc. system) may be used.
  • ADB adaptive driving beam
  • Two arrangement holes are formed in the lamp cover 12 so as to be separated from each other in the left and right direction.
  • the lamp cover 12 is attached to the holder 10 from the front side.
  • parts of the light irradiation units 11 and 11 are arranged in the arrangement holes, and parts of the light irradiation units 11 and 11 that are not arranged in the arrangement holes are covered by the lamp cover 12. Shielded from the front.
  • a marker lamp unit 14 is arranged inside the lamp housing 4 at a position extending from the outer end portion 4b to the front end portion of the main portion 4a (see FIGS. 1 and 2).
  • the marker light unit 14 has a heat sink 15, a circuit board 16, a first light source 17, a second light source 18, a shade 19, a first light guide 20 and a second light guide 21 (see FIG. 1). , see FIGS. 3 and 4).
  • Each part of the heat sink 15 is integrally formed of a metal material (see FIGS. 3 and 4).
  • the heat sink 15 has a plate-shaped substrate mounting portion 22 facing in the front-rear direction, radiation fin portions 23, 23, . . . and a peripheral wall portion 24 .
  • a positioning pin 25, a positioning portion 26, and a light shielding wall 27 protrude from the front surface of the board mounting portion 22, respectively.
  • the positioning portion 26 is provided at a position continuous with the inner peripheral surface of the peripheral wall portion 24 .
  • the light shielding wall 27 is positioned between the positioning pin 25 and the positioning portion 26 and is formed, for example, in an arc shape.
  • Positioning concave portions 28, 28, 28 are formed in the peripheral wall portion 24 so as to be spaced apart in the circumferential direction.
  • the positioning recessed portion 28 is open forward, and includes a first restricting surface 28a facing forward and second restricting surfaces 28b, 28b that are continuous with both ends of the first restricting surface 28a in the circumferential direction and orthogonal to the first restricting surface 28a. and guide surfaces 28c, 28c which are continuous with the front ends of the second restricting surfaces 28b, 28b and are gently inclined in a direction separating from each other toward the front (see FIG. 5).
  • Engagement protrusions 24a, 24a projecting outward are provided on the peripheral wall 24 so as to be spaced apart in the circumferential direction (see FIGS. 3 and 4).
  • the heat sink 15 is attached to the lamp housing 2 by screwing, for example, with the peripheral wall portion 24 inserted into the attachment hole 2a of the lamp housing 2 from behind.
  • the heat sink 15 is attached to the lamp housing 2, the board attachment portion 22 and the heat radiation fin portions 23, 23, . . .
  • the circuit board 16 is formed, for example, in the shape of a disc facing in the front-rear direction, and a circuit (not shown) is formed on the front surface of the circuit board 16 .
  • the circuit board 16 is formed with an insertion hole 16a and a positioning hole 16b penetrating in the front and rear directions.
  • a positioning notch 16c is formed in the outer peripheral portion of the circuit board 16 .
  • the circuit board 16 is positioned with respect to the heat sink 15 by inserting the positioning pins 25 and the positioning portions 26 into the positioning holes 16b and the positioning notches 16c, respectively, and attached to the heat sink 15 by screwing or the like (see FIG. 6).
  • the circuit board 16 is attached to the heat sink 15, the circuit board 16 is positioned inside the peripheral wall portion 24, and the light shielding wall 27 of the heat sink 15 is inserted through the insertion hole 16a.
  • the first light source 17 and the second light sources 18, 18 are mounted on the front surface of the circuit board 16 and connected to the circuit.
  • the first light source 17 is for example for turn signal lamps and the second light sources 18, 18 are for example for daytime running lamps and clearance lamps.
  • the second light sources 18, 18 are used as daytime running lamps, light with higher brightness is emitted from the second light sources 18, 18 than when the second light sources 18, 18 are used as clearance lamps.
  • the first light source 17 and the second light source 18 may be a single light source or multiple light sources. Although two second light sources 18 are provided, the number of second light sources 18 is arbitrary.
  • the light shielding wall 27 is positioned between the first light source 17 and the second light sources 18, 18 mounted on the circuit board 16.
  • the first light source 17 and one of the second light sources 18 are positioned in the vicinity of the light shielding wall 27 on opposite sides of the light shielding wall 27, and the first light source 17 is formed in an arc shape. located inside the
  • the light shielding wall 27 is positioned between the first light source 17 and the second light sources 18 , 18 . , and the light emitted from the second light sources 18, 18 is shielded by the light shielding wall 27, making it difficult to travel to the first light source 17 side.
  • Each part of the shade 19 is integrally formed of, for example, a resin material, and is connected to an annular casing part 29 and a base plate part 30 connected to a portion near the front end of the casing part 29 and to the base plate part 30, respectively. and elastically deformable engaging portions 32 , 32 protruding rearward from the housing portion 29 .
  • Positioning protrusions 33, 33, and 33 protruding rearward are provided on the casing 29 so as to be spaced apart in the circumferential direction.
  • the positioning projection 33 has a first regulated surface 33a facing backward and second regulated surfaces 33b, 33b which are continuous with both ends in the circumferential direction of the first regulated surface 33a and perpendicular to the first regulated surface. (See FIG. 5).
  • the shade 19 is positioned on the heat sink 15 by the positioning protrusions 33, 33, 33 being guided by the guide surfaces 28c, 28c, . 32 are attached to the heat sink 15 by engaging with the engaging projections 24a, 24a (see FIGS. 3 and 5).
  • the first regulated surfaces 33a, 33a, 33a of the positioning protrusions 33, 33, 33 are pressed from the front against the first regulating surfaces 28a, 28a, 28a of the positioning recesses 28, 28, 28, respectively.
  • Positioning of the heat sink 15 in the front-rear direction is performed by .
  • the second regulated surfaces 33b, 33b, . . . Positioning in the circumferential direction with respect to the heat sink 15 is performed by being brought into contact with or in close proximity to each other.
  • the second regulated surfaces 33b, 33b of one positioning protrusion 33 come into contact with the second regulating surfaces 28b, 28b of one positioning recess 28, respectively, in the circumferential direction.
  • one second regulated surface 33b of the other positioning protrusion 33 is in contact with one second regulated surface 28b of the positioning recess 28 in the circumferential direction, and the other second regulated surface 33b is located close to the other second regulation surface 28b of the positioning recess 28 in the circumferential direction.
  • one second regulated surface 33b of another positioning protrusion 33 is brought into contact with one second regulating surface 28b of the positioning recess 28 in the circumferential direction, and the other second regulated surface 33b The surface 33b is located close to the other second regulation surface 28b of the positioning recess 28 in the circumferential direction.
  • the engaging portion 32 When the shade 19 is attached to the heat sink 15, the engaging portion 32 is slid on the engaging protrusion 24a and is elastically deformed, and the engaging portion 32 is elastically restored so that the engaging protrusion is attached to the opening edge of the engaging hole 32a. It is attached to the heat sink 15 by locking the 24a. The attachment of the shade 19 to the heat sink 15 is performed simultaneously with the positioning of the shade 19 to the heat sink 15 .
  • the shade 19 is attached to the heat sink 15 with the engaging portion 32 elastically engaged with the engaging protrusion 24a. 19 can be attached to the heat sink 15 easily and quickly.
  • the first light guide 20 is, for example, substantially cylindrical and formed in a shape extending along the inner surface of the cover 3 (see FIG. 1).
  • the first light guide 20 is provided with a light incident portion 34 at one end in the longitudinal direction, and an end face of the light incident portion 34 is formed as a light incident surface 34a.
  • a total reflection step (not shown) is formed on the rear surface of the first light guide 20 except for a part thereof. Therefore, the light incident from the light incident surface 34a and guided inside the first light guide 20 is internally reflected by the total reflection step, and is irradiated substantially forward.
  • the second light guide body 21 has, for example, two substantially cylindrical light guide portions 35, 35 and a plurality of connecting portions 36 that connect the light guide portions 35, 35, and the light guide portions 35, 35 It is formed in a shape extending along the inner surface of the cover 3 .
  • the second light guide body 21 may be configured to have only one light guide portion 35 or may be configured to have three or more light guide portions 35 .
  • the second light guide 21 is provided with light incident portions 37, 37 at one ends in the longitudinal direction of the light guide portions 35, 35, respectively, and end surfaces of the light incident portions 37, 37 are formed as light incident surfaces 37a, 37a, respectively. It is A total reflection step (not shown) is formed on the rear surface of each of the light guides 35, 35 except for a part thereof. Therefore, the light incident from the light incident surfaces 37a, 37a and guided inside the light guide portions 35, 35 is internally reflected by the total reflection step, and is irradiated substantially forward.
  • the light incident portion 34 of the first light guide 20 is inserted into the holding cylinder portion 31 of the shade 19, and the position regulating portions 31a, 31a, 31a are in contact with or close to the outer peripheral surface of the light incident portion 34.
  • the position in the direction perpendicular to the longitudinal direction is regulated by 31a, 31a (see FIG. 7). Further, the position of the first light guide 20 in the longitudinal direction is regulated by another member such as a reflector (not shown), and is held by the shade 19 .
  • the light incident portion 34 is positioned facing the first light source 17 mounted on the circuit board 16 (see FIG. 8). At this time, the light incident portion 34 is positioned inside the arc-shaped light shielding wall 27 .
  • the light incident portions 37, 37 of the light guiding portions 35, 35 of the second light guide 21 are inserted into the holding cylinder portions 31, 31 of the shade 19, respectively, and the position regulating portions 31a, 31a, .
  • the position in the direction perpendicular to the longitudinal direction is regulated by the position regulating portions 31a, 31a, .
  • the positions of the light guiding portions 35 and 35 in the longitudinal direction are regulated by other members such as reflectors, and the light guide portions 35 are held by the shade 19 .
  • the light incident portions 37, 37 are positioned to face the second light sources 18, 18 mounted on the circuit board 16, respectively (see FIG. 8). ). At this time, the light incident portions 37 , 37 are separated from the light incident portion 34 of the first light guide 20 by the light shielding wall 27 .
  • the vehicle lamp 1 configured as described above, when light is emitted from the first light source 17, the emitted light enters the first light guide body 20 from the light incident surface 34a and enters the first light guide 20. The light is guided inside the light guide 20, passes through the cover 3, and is irradiated substantially forward. At this time, light as a turn signal lamp is emitted from the first light guide 20 .
  • the emitted light is incident on the light guide portions 35, 35 of the second light guide body 21 from the light incident surfaces 37a, 37a, respectively.
  • the light is guided inside the portions 35, 35, transmitted through the cover 3, and irradiated substantially forward.
  • light as a daytime running lamp or a clearance lamp is emitted from the second light guide 21 . Therefore, light having different functions is emitted from the first light guide 20 and the second light guide 21 .
  • the first light guide 20 guides the light emitted from the first light source 17, and the first light guide 20 guides the light emitted from the second light source 18. and a light shielding wall 27 positioned between the first light source 17 and the second light source 18. I have.
  • the light shielding wall 27 shields the light emitted from the first light source 17 from traveling toward the second light guide body 21 and prevents the light emitted from the second light source 18 from traveling in the first direction. Light traveling toward the light body 20 is blocked. As a result, the light emitted from the first light source 17 is less likely to enter the second light guide 21 and the light emitted from the second light source 18 is less likely to enter the first light guide 20. The light emitted from the first light source 17 is not emitted from the first light guide body 20 and the light emitted from the second light source 18 is not emitted from the first light guide body 20, thereby reducing functionality. It is possible to prevent this and ensure a proper irradiation state of light.
  • a heat sink 15 having a board mounting portion 22 to which a circuit board 16 is mounted is provided, an insertion hole 16a is formed in the circuit board 16, and a light shielding wall 27 is inserted into the insertion hole 16a.
  • the light emitted from the second light source 18 can be prevented from entering the first light guide 20 .
  • the light shielding wall 27 is provided as a part of the heat sink 15, it is not necessary to provide the light shielding wall 27 as a member separate from other members, and the number of parts can be reduced.
  • a shade 19 that holds the first light guide 20 and the second light guide 21 is provided, and the shade 19 is attached to the heat sink 15 while being positioned on the heat sink 15 .
  • the shade 19 holding the first light guide 20 and the second light guide 21 is positioned and attached to the heat sink 15 to which the circuit board 16 is attached, the first light guide 20 and High positional accuracy of the second light guide 21 with respect to the first light source 17 and the second light source 18 can be ensured.
  • the end portion of the first light guide 20 facing the first light source 17 is provided as a light incident portion 34 , and at least part of the light incident portion 34 is covered by the light shielding wall 27 from the surroundings. state.
  • the light incident on the first light guide 20 travels toward the second light guide 21 side, and the light incident on the second light guide 21 travels toward the first light guide 20 side.
  • the progress of the light is shielded by the light shielding wall 27, and a proper on/off state of the light in the vehicle lamp 1 can be ensured.
  • SYMBOLS 1 Vehicle lamp, 15... Heat sink, 16... Circuit board, 16a... Insertion hole, 17... First light source, 18... Second light source, 19... Shade, 20... First light guide, 21... Second 2 light guide, 22 substrate mounting portion, 27 light shielding wall, 34 light incident portion

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
PCT/JP2022/030597 2021-08-24 2022-08-10 車輌用灯具 Ceased WO2023026865A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202280057012.0A CN117836556A (zh) 2021-08-24 2022-08-10 车辆用灯具
JP2023543805A JP7814397B2 (ja) 2021-08-24 2022-08-10 車輌用灯具

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021136595 2021-08-24
JP2021-136595 2021-08-24

Publications (1)

Publication Number Publication Date
WO2023026865A1 true WO2023026865A1 (ja) 2023-03-02

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Application Number Title Priority Date Filing Date
PCT/JP2022/030597 Ceased WO2023026865A1 (ja) 2021-08-24 2022-08-10 車輌用灯具

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JP (1) JP7814397B2 (https=)
CN (1) CN117836556A (https=)
WO (1) WO2023026865A1 (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023132848A (ja) * 2022-03-11 2023-09-22 スタンレー電気株式会社 光源ユニット及び車両用灯具
WO2025121074A1 (ja) * 2023-12-05 2025-06-12 株式会社小糸製作所 車輌用灯具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013161738A (ja) * 2012-02-08 2013-08-19 Sharp Corp 投光装置およびそれに用いられる導光部材
JP2018198127A (ja) * 2017-05-23 2018-12-13 スタンレー電気株式会社 車両用灯具
JP2019003864A (ja) * 2017-06-16 2019-01-10 株式会社小糸製作所 ライトガイド装置
US20200189450A1 (en) * 2018-12-12 2020-06-18 Sl Corporation Vehicle lamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013161738A (ja) * 2012-02-08 2013-08-19 Sharp Corp 投光装置およびそれに用いられる導光部材
JP2018198127A (ja) * 2017-05-23 2018-12-13 スタンレー電気株式会社 車両用灯具
JP2019003864A (ja) * 2017-06-16 2019-01-10 株式会社小糸製作所 ライトガイド装置
US20200189450A1 (en) * 2018-12-12 2020-06-18 Sl Corporation Vehicle lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023132848A (ja) * 2022-03-11 2023-09-22 スタンレー電気株式会社 光源ユニット及び車両用灯具
JP7805207B2 (ja) 2022-03-11 2026-01-23 スタンレー電気株式会社 車両用灯具
WO2025121074A1 (ja) * 2023-12-05 2025-06-12 株式会社小糸製作所 車輌用灯具

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