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WO2021166533A1 - Light fixture unit and light fixture for vehicle - Google Patents

Light fixture unit and light fixture for vehicle Download PDF

Info

Publication number
WO2021166533A1
WO2021166533A1 PCT/JP2021/001906 JP2021001906W WO2021166533A1 WO 2021166533 A1 WO2021166533 A1 WO 2021166533A1 JP 2021001906 W JP2021001906 W JP 2021001906W WO 2021166533 A1 WO2021166533 A1 WO 2021166533A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
lighting unit
emitting element
light emitting
low beam
Prior art date
Application number
PCT/JP2021/001906
Other languages
French (fr)
Japanese (ja)
Inventor
松本　昭則
知幸 市川
佐藤　正和
Original Assignee
株式会社小糸製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Priority to JP2022501711A priority Critical patent/JP7518892B2/en
Priority to CN202180006332.9A priority patent/CN114651151B/en
Publication of WO2021166533A1 publication Critical patent/WO2021166533A1/en
Priority to JP2024108745A priority patent/JP2024133632A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like 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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/155—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having inclined and horizontal cutoff lines
    • 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

  • This disclosure relates to a lamp unit and a lamp for a vehicle on which the lamp unit is mounted.
  • Patent Document 1 discloses a lamp for a left vehicle equipped with a left lamp unit and a lamp for a right vehicle equipped with a right lamp unit.
  • the purpose of this disclosure is to reduce the manufacturing cost of the lamp unit and the lamp for vehicles.
  • the lamp unit is A first low beam lighting unit configured to emit a first low beam light distribution pattern having a first cut offline, A second low beam lighting unit configured to emit a second low beam light distribution pattern having a second cut-off line, A high beam lighting unit arranged between the first low beam lighting unit and the second low beam lighting unit and configured to emit a high beam light distribution pattern is provided.
  • the first low beam lighting unit, the second low beam lighting unit, and the high beam lighting unit are arranged side by side in the first direction.
  • the high beam lighting unit is arranged between the first low beam lighting unit and the second low beam lighting unit. Therefore, when the low beam light distribution pattern is emitted from the vehicle, the first low beam lighting unit and the second low beam lighting unit are turned on, while the high beam lighting unit is turned off. As described above, the appearance of the lamp unit while emitting the low beam is symmetrical with respect to the predetermined position of the lamp unit.
  • the appearances of the left vehicle lamp and the right vehicle lamp emitting the low beam are substantially the same, so that the same lamp unit is placed on the left side. It can be applied to both vehicle lighting fixtures and right-side vehicle lighting fixtures. As described above, it is not necessary to manufacture two different lamp units for each of the left vehicle lamp and the right vehicle lamp, and the manufacturing cost of the lamp unit can be reduced.
  • A is a front view schematically showing the lighting unit for the first low beam.
  • B is a front view schematically showing a high beam lighting unit.
  • C is a front view schematically showing the lighting unit for the second low beam.
  • FIG. 1A is a diagram for explaining the relationship between the lighting timing of the high beam lighting unit and the extinguishing timing of the second low beam lighting unit.
  • B is a figure for demonstrating the relationship between the turn-off timing of the high beam lighting unit and the lighting timing of the second low beam lighting unit.
  • horizontal direction In the description of the present embodiment, for convenience of explanation, "horizontal direction”, “vertical direction”, and “front-back direction” may be appropriately referred to. These directions are relative directions set for the lamp unit 3 shown in FIG.
  • the "left-right direction” is a direction including the “left direction” and the “right direction”.
  • the “vertical direction” is a direction including “upward direction” and “downward direction”.
  • the "front-back direction” is a direction including the "forward direction” and the "rear direction”.
  • One of the left-right direction, the up-down direction, and the front-back direction shall be orthogonal to the remaining two directions.
  • the "horizontal direction” is a direction perpendicular to the vertical direction (vertical direction), and is a direction including a horizontal direction and a front-back direction.
  • the directions set for the lighting unit 3 are the directions set for the vehicle 1 and the left-hand vehicle lighting tool 2L (horizontal direction, vertical direction, front-rear direction). It shall match the direction).
  • FIG. 1 is a front view of a vehicle 1 provided with a left side vehicle light fixture 2L and a right side vehicle light fixture 2R.
  • the left front vehicle lighting 2L is arranged on the left front side of the vehicle 1
  • the right vehicle lighting 2R is arranged on the right front side of the vehicle 1.
  • the same lamp unit 3 is mounted on each of the left vehicle lamp 2L and the right vehicle lamp 2R.
  • FIG. 2 shows a vertical cross-sectional view of the left vehicle lamp 2L.
  • the left vehicle lamp 2L includes a lamp housing 12, a lamp cover 14 that covers an opening of the lamp housing 12, and a lamp unit 3.
  • the lamp unit 3 is arranged in the lamp chamber S formed by the lamp housing 12 and the lamp cover 14.
  • FIG. 3 is a perspective view of the lamp unit 3.
  • FIG. 4 is a front view of the lamp unit 3.
  • FIG. 5 is a cross-sectional view showing a heat sink 6, a circuit board 8, light emitting elements 5a to 5d, and an inner lens 4 of the lamp unit 3.
  • the lamp unit 3 includes a heat sink 6, a bracket 9, a circuit board 8, light emitting elements 5a to 5d, and an inner lens 4.
  • the light emitting elements 5a to 5d may be collectively referred to as a light emitting element 5.
  • the heat sink 6 is configured to release the heat released from the light emitting element 5 into the air in the lighting chamber S.
  • the heat sink 6 is formed, for example, by extrusion molding an aluminum plate.
  • the bracket 9 is formed of, for example, a resin material such as polycarbonate or nylon, and has a first bracket portion 9a and a second bracket portion 9b that are completely separated from each other.
  • the first bracket portion 9a is fixed to the heat sink 6 on one end side of the heat sink 6 and is connected to an aiming screw 92 that functions as an optical axis adjusting mechanism and a fulcrum screw 95 that functions as a fulcrum mechanism (see FIG. 4). ).
  • the aiming screw 92 is configured to adjust the optical axis Ax of the lamp unit 3 in the vertical direction.
  • the second bracket portion 9b is fixed to the heat sink 6 on the other end side of the heat sink 6 and is connected to an aiming screw 93 (see FIG. 4) that functions as an optical axis adjusting mechanism.
  • the aiming screw 93 is configured to adjust the optical axis Ax of the lamp unit 3 in the horizontal direction.
  • the circuit board 8 is arranged on the front surface 60 of the heat sink 6.
  • the circuit board 8 is electrically connected to a power supply circuit (not shown).
  • the power supply circuit may be mounted on the circuit board 8.
  • the light emitting elements 5a to 5d are arranged on the circuit board 8 and are electrically connected to a light source drive circuit (not shown) via the circuit board 8.
  • the light emitting element 5 is, for example, a semiconductor light emitting element such as an LED.
  • the light emitting element 5 is configured to emit white light to the outside, and may include, for example, a blue LED and a yellow phosphor.
  • the light emitting elements 5a to 5d are arranged on the same straight line in the left-right direction (an example of the first direction).
  • the light emitting element 5b constituting the high beam lighting unit 7b and the light emitting element 5c constituting the high beam lighting unit 7c are the light emitting element 5a forming the first low beam lighting unit 7a and the second low beam lighting unit in the left-right direction. It is arranged between the light emitting element 5d and the light emitting element 5d constituting the 7d.
  • Each of the light emitting elements 5a to 5c is arranged on the circuit board 8 so that the lower ends thereof are parallel to the left-right direction, while the lower ends of the light emitting elements 5d are oblique to the left-right direction. Is arranged on the circuit board 8. Since the lower end of the light emitting element 5d is oblique with respect to the left-right direction, the second low beam lighting unit 7d has a low beam light distribution pattern having an oblique cut-off line L2 (an example of the second cut-off line) as described later. P2 (an example of the light distribution pattern for the second low beam) can be formed (see (a) of FIG. 8).
  • the inner lens 4 is arranged on the front surface 60 of the heat sink 6 so as to cover the light emitting elements 5a to 5d.
  • the inner lens 4 is formed of, for example, a transparent resin material such as polycarbonate or acrylic resin.
  • the inner lens 4 has lens units 40a to 40d arranged on the same straight line in the left-right direction. Each lens unit 40a to 40d is integrally formed.
  • the lens unit 40a faces the light emitting element 5a (an example of the first light emitting element) in the front-rear direction.
  • the lens unit 40a emits the light emitted from the light emitting element 5a toward the outside of the vehicle 1 to have a horizontal cut-off line L1 (an example of the first cut-off line) for a low beam light distribution pattern P1 (for the first low beam). It is configured to form an example of a light distribution pattern) (see (a) in FIG. 8).
  • FIG. 8A is a diagram schematically showing a light distribution pattern formed on a virtual screen arranged 25 m ahead of the vehicle 1 when the low beam is emitted.
  • FIG. 8B is a diagram schematically showing a light distribution pattern formed on the virtual screen when the high beam is emitted.
  • the low beam light distribution pattern P1 is formed so as to extend along the HH line.
  • the lens unit 40a has a central light transmitting portion 42a and a peripheral light transmitting portion 43a.
  • the central light transmitting portion 42a is configured to face the light emitting element 5a in the front-rear direction and to emit a part of the light emitted from the light emitting element 5a toward the outside of the vehicle 1.
  • the peripheral light transmitting portion 43a is provided so as to surround the central light transmitting portion 42a, and is configured to totally reflect the other part of the light emitted from the light emitting element 5a toward the outside of the vehicle 1.
  • the low beam light distribution pattern P1 is formed by synthesizing the light distribution pattern formed by the central light transmitting portion 42a and the light distribution pattern formed by the peripheral light transmitting portion 43a.
  • the recess 54a communicates with the recess 56a, and the diameter of the recess 56a is larger than the diameter of the recess 54a.
  • the central light transmitting portion 42a has an emitting surface 52a forming the bottom surface of the recess 54a and an incident surface 47a.
  • the peripheral light transmitting portion 43a has an exit surface 53a forming the bottom surface of the recess 56a, an incident surface 49a, and a total reflection surface 46a.
  • the light emitting element 5a and the lens unit 40a constitute a first low beam illumination unit 7a configured to form a low beam light distribution pattern P1.
  • the lens unit 40b (an example of a third lens unit) faces the light emitting element 5b (an example of a third light emitting element) in the front-rear direction.
  • the lens unit 40b is configured to form a high beam light distribution pattern P3 by emitting light emitted from the light emitting element 5b toward the outside of the vehicle 1 (see FIG. 8B).
  • the lens unit 40b has a central light transmitting portion 42b and a peripheral light transmitting portion 43b.
  • the central light transmitting portion 42b is configured to face the light emitting element 5b in the front-rear direction and to emit a part of the light emitted from the light emitting element 5b toward the outside of the vehicle 1.
  • the peripheral light transmitting portion 43b is provided so as to surround the central light transmitting portion 42b, and is configured to totally reflect the other part of the light emitted from the light emitting element 5b toward the outside of the vehicle 1.
  • the high beam light distribution pattern P3 is formed by synthesizing the light distribution pattern formed by the central light transmitting portion 42b and the light distribution pattern formed by the peripheral light transmitting portion 43b.
  • the recess 54b communicates with the recess 56b, and the diameter of the recess 56b is larger than the diameter of the recess 54b.
  • the central light transmitting portion 42b has an emitting surface 52b forming the bottom surface of the recess 54b and an incident surface 47b.
  • the peripheral light transmitting portion 43b has an exit surface 53b forming the bottom surface of the recess 56b, an incident surface 49b, and a total reflection surface 46b.
  • the light emitting element 5b and the lens unit 40b constitute a high beam illumination unit 7b configured to form a high beam light distribution pattern P3.
  • the lens unit 40c (an example of a third lens unit) faces the light emitting element 5c (an example of a third light emitting element) in the front-rear direction.
  • the lens unit 40c has the same configuration as the lens unit 40b, and is configured to form a high beam light distribution pattern P4 by emitting light emitted from the light emitting element 5c toward the outside of the vehicle 1. (See (b) in FIG. 8).
  • the high beam light distribution pattern P4 formed by the lens unit 40c completely overlaps the high beam light distribution pattern P3 formed by the lens unit 40b.
  • the lens unit 40c has a central light transmitting portion 42c and a peripheral light transmitting portion 43c.
  • the central light transmitting portion 42c is configured to face the light emitting element 5c in the front-rear direction and to emit a part of the light emitted from the light emitting element 5c toward the outside of the vehicle 1.
  • the peripheral light transmitting portion 43c is provided so as to surround the central light transmitting portion 42c, and is configured to totally reflect the other part of the light emitted from the light emitting element 5c toward the outside of the vehicle 1.
  • the high beam light distribution pattern P4 is formed by synthesizing the light distribution pattern formed by the central light transmitting portion 42c and the light distribution pattern formed by the peripheral light transmitting portion 43c.
  • the recess 54c communicates with the recess 56c, and the diameter of the recess 56c is larger than the diameter of the recess 54c.
  • the central light transmitting portion 42c has an emitting surface 52c forming the bottom surface of the recess 54c and an incident surface 47c.
  • the peripheral light transmitting portion 43c has an exit surface 53c forming the bottom surface of the recess 56c, an incident surface 49c, and a total reflection surface 46c.
  • the light emitting element 5c and the lens unit 40c constitute a high beam illumination unit 7c configured to form a high beam light distribution pattern P4.
  • the lens unit 40d (an example of a second lens unit) faces the light emitting element 5d (an example of a second light emitting element) in the front-rear direction.
  • the lens unit 40d is configured to form a low beam light distribution pattern P2 having an oblique cut-off line L2 by emitting light emitted from the light emitting element 5d toward the outside of the vehicle 1 (FIG. 8). (A).
  • the low beam light distribution pattern P2 is formed so as to extend obliquely with respect to the HH line.
  • the low beam light distribution pattern P1 formed by the lens unit 40a and the low beam light distribution pattern P2 formed by the lens unit 40d form a light distribution pattern when the low beam is emitted.
  • the lens unit 40d has a central light transmitting portion 42d and a peripheral light transmitting portion 43d.
  • the central light transmitting portion 42d is configured to face the light emitting element 5d in the front-rear direction and to emit a part of the light emitted from the light emitting element 5d toward the outside of the vehicle 1.
  • the peripheral light transmitting portion 43d is provided so as to surround the central light transmitting portion 42d, and is configured to totally reflect the other part of the light emitted from the light emitting element 5d toward the outside of the vehicle 1.
  • the low beam light distribution pattern P2 is formed by synthesizing the light distribution pattern formed by the central light transmitting portion 42d and the light distribution pattern formed by the peripheral light transmitting portion 43d.
  • the recess 54d communicates with the recess 56d, and the diameter of the recess 56d is larger than the diameter of the recess 54d.
  • the central light transmitting portion 42d has an emitting surface 52d forming the bottom surface of the recess 54d and an incident surface 47d.
  • the peripheral light transmitting portion 43d has an exit surface 53d forming the bottom surface of the recess 56d, an incident surface 49d, and a total reflection surface 46d.
  • the light emitting element 5d and the lens unit 40d constitute a second low beam illumination unit 7d configured to form the low beam light distribution pattern P2.
  • the lighting fixture unit 3 includes the first low beam lighting unit 7a (hereinafter, simply referred to as “lighting unit 7a”) and the high beam lighting units 7b, 7c (hereinafter, simply “lighting”). Units 7b and 7c ”) and a second low beam lighting unit 7d (hereinafter, simply referred to as“ lighting unit 7d ”). As shown in FIG. 5, these lighting units 7a to 7d are arranged side by side in the left-right direction. The lighting units 7b and 7c are arranged between the lighting unit 7a and the lighting unit 7d in the left-right direction.
  • exit surfaces 52a to 52d of the central light transmitting portions 42a to 42d are located on the same plane, and the exit surfaces 53a to 53d of the peripheral light transmitting portions 43a to 43d are located on the same plane.
  • FIG. 6 is an enlarged cross-sectional view of the lens unit 40a.
  • a part of the light emitted from the light emitting element 5a reaches the exit surface 52a after being incident on the incident surface 47a of the central light transmitting portion 42a.
  • the light that has reached the exit surface 52a is emitted to the outside in a state of being diffused by the diffusion lens element 48a formed on the emission surface 52a.
  • the other part of the light emitted from the light emitting element 5a is totally reflected by the total reflection surface 46a after being incident on the incident surface 49a of the peripheral light transmitting portion 43a.
  • the light totally reflected by the total reflection surface 46a reaches the exit surface 53a and is then emitted to the outside in a state of being diffused by the diffusion lens element 48a formed on the emission surface 53a.
  • the low beam light distribution pattern P1 is formed by the lens unit 40a.
  • the lens units 40b to 40d also have the same configuration as the lens unit 40a.
  • the exit surfaces of the lens units 40b to 40d also have diffusion lens elements 48b to 48d.
  • each of the diffusion lens elements 48a to 48c formed in the lens units 40a to 40c is formed so as to extend substantially parallel in the vertical direction.
  • FIG. 7A is a front view schematically showing the lighting unit 7a.
  • FIG. 7B is a front view schematically showing the lighting unit 7b.
  • FIG. 7C is a front view schematically showing the lighting unit 7d.
  • the peripheral light transmitting portion 43a of the lens unit 40a is provided so as to surround the central light transmitting portion 42a in the circumferential direction thereof.
  • the peripheral light transmitting portion 43a is divided into eight reflection regions R1 to R8 along the circumferential direction thereof.
  • Each of the reflection regions R1 to R8 has an angle region of 45 ° from the center of the lens unit 40a.
  • Each of the reflection regions R1 to R8 has a total reflection surface 46a having different outer shapes from each other.
  • the peripheral light transmitting portion 43b of the lens unit 40b is provided so as to surround the central light transmitting portion 42b in the circumferential direction thereof.
  • the peripheral light transmitting portion 43b is not divided into a plurality of reflection regions in the circumferential direction thereof. Since the lens unit 40c has the same configuration as the lens unit 40b, the peripheral light transmitting portion 43c of the lens unit 40c is not divided into a plurality of reflection regions in the circumferential direction thereof.
  • the peripheral light transmitting portion 43d of the lens unit 40d is provided so as to surround the central light transmitting portion 42d in the circumferential direction thereof.
  • the peripheral light transmitting portion 43d is divided into eight reflection regions R10 to R17 along the circumferential direction thereof.
  • Each of the reflection regions R10 to R17 has an angle region of 45 ° from the center of the lens unit 40d.
  • Each of the reflection regions R10 to R17 has a total reflection surface 46d having a different shape from each other.
  • the lighting units 7b and 7c are arranged between the lighting unit 7a and the lighting unit 7d. Therefore, when the low beam light distribution patterns P1 and P2 are emitted from the vehicle 1, the lighting units 7a and 7b are turned on, while the lighting units 7b and 7c are turned off.
  • the appearance of the lamp unit 3 while emitting the low beam is symmetrical with respect to the center position in the left-right direction of the lamp unit 3. Therefore, when the same lamp unit 3 is mounted on the left vehicle lamp 2L and the right vehicle lamp 2R, the appearance of the lamp unit 3 of the left vehicle lamp 2L emitting the low beam and the right side emitting the low beam.
  • the appearances of the lamp unit 3 of the vehicle lamp 2R are substantially the same.
  • the same lamp unit 3 can be applied to both the left vehicle lamp 2L and the right vehicle lamp 2R. As described above, it is not necessary to manufacture two different lamp units for each of the left vehicle lamp 2L and the right vehicle lamp 2R, and it is possible to reduce the manufacturing cost of the lamp unit 3 and the vehicle lamp. ..
  • each of the lens units 40a to 40d forms a light distribution pattern based on the light emitted from the light emitting element, the position between the lens unit and the light emitting element. Adjustment is important.
  • the lens units 40a to 40d are integrally formed in the inner lens 4, the position adjustment between the lens unit 40a and the light emitting element 5a and the position adjustment between the lens unit 40b and the light emitting element 4b and the light emitting element are performed.
  • the position adjustment between the lens unit 40c and the light emitting element 5c, and the position adjustment between the lens unit 40d and the light emitting element 5d can be performed collectively.
  • each of the lens units 40a to 40d has a central light transmitting portion and a peripheral light transmitting portion. Therefore, the central light transmitting portion and the peripheral light transmitting portion of the lens unit make it possible to form a light distribution pattern in a state where the utilization efficiency of the light emitted from the light emitting element is enhanced.
  • the light distribution pattern when the low beam is emitted and the light distribution pattern when the high beam is emitted will be described below.
  • the low beam light distribution patterns P1 and P2 are emitted to the outside of the vehicle 1, while the high beam light distribution patterns P3 and P4 are emitted. It is not emitted to the outside of the vehicle 1. That is, when the lamp unit 3 emits a low beam, the lighting units 7a and 7d are turned on, while the lighting units 7b and 7c are turned off.
  • the lamp unit 3 when the lamp unit 3 emits a high beam, the high beam light distribution patterns P3 and P4 and the low beam light distribution pattern P1 are emitted, while the low beam arrangement.
  • the light pattern P2 is not emitted. That is, when the lamp unit 3 emits a high beam, the lighting units 7a, 7b, and 7c are turned on, while the lighting unit 7d is turned off. As described above, since the lighting unit 7d is turned off while the lamp unit 3 is emitting the high beam, the power consumption of the lamp unit 3 can be reduced and the amount of heat radiated from the lamp unit 3 can be reduced. Can be done.
  • the light emitting element 5a is connected to the light emitting elements 5d and 5b.
  • the light emitting element 5d and the changeover switch 21 are connected in series with each other, and the light emitting elements 5b and 5c and the changeover switch 22 are connected in series with each other.
  • the group including the light emitting element 5d and the changeover switch 21 is connected in parallel to the group including the light emitting elements 5b and 5c and the changeover switch 22.
  • the changeover switches 21 and 22 are realized by, for example, a field effect transistor (FET).
  • FET field effect transistor
  • the lighting unit 7b and 7c the relationship between the lighting timing of the lighting units 7b and 7c and the extinguishing timing of the lighting unit 7d when the beam emitted from the lighting unit 3 is switched from the low beam to the high beam will be described. do.
  • the lighting unit 7b, lighting timing t on which 7c shifts to the lighting state (ON state) from the OFF state (OFF state), earlier than off timing t off of the lighting unit 7d shifts from a lighting state to the OFF state Become.
  • the timing at which the changeover switch 22 changes from OFF to ON is earlier than the timing at which the changeover switch 21 changes from ON to OFF. In this way, it is possible to prevent a situation in which the lighting unit 7d is turned off immediately before the lighting units 7b and 7c are turned on.
  • the relationship between the extinguishing timing of the lighting units 7b and 7c and the lighting timing of the lighting unit 7d when the beam emitted from the lamp unit 3 is switched from the high beam to the low beam will be described. do.
  • the lighting timing t on the lighting unit 7d transitions from OFF state to the lighting state is earlier than the off timing t off the lighting unit 7b, 7c moves from the lighting state to the OFF state.
  • the timing at which the changeover switch 21 changes from OFF to ON is earlier than the timing at which the changeover switch 22 changes from ON to OFF. In this way, it is possible to prevent a situation in which the lighting units 7b and 7c are turned off immediately before the lighting unit 7d is turned on.
  • the lamp unit 3 includes two high beam lighting units, but the number of high beam lighting units is not particularly limited.
  • the number of high beam lighting units provided in the lamp unit 3 may be one.
  • the lighting unit 3 is provided with one high beam lighting unit.
  • the lighting unit 7a, the lighting unit 7b, and the lighting unit 7d are arranged in the lamp unit 3 in the left-right direction.
  • the distance D between the outer edge of the lens unit 40a and the outer edge of the lens unit 40d in the left-right direction of the lamp unit 3 preferably satisfies 0 mm ⁇ D ⁇ 75 mm.
  • the lighting unit 7a is turned on and the lighting unit 7d is turned on so that the lighting unit 7b is turned off from the outside of the vehicle 1. It becomes difficult.
  • the vehicle 1 is described as a four-wheeled vehicle, but the vehicle of the present embodiment is not limited to the four-wheeled vehicle. In this respect, the vehicle 1 may be a motorcycle or a motorcycle.
  • the lighting unit 7d is configured to emit the low beam light distribution pattern P2 having the oblique cut-off line L2, but the cut-off line of the low beam light distribution pattern P2 is the horizontal cut-off line. You may.
  • the cut-off line of the low beam light distribution pattern P2 is a horizontal cut-off line.
  • the lamp unit 3 can emit a low beam for a motorcycle or a motorcycle.

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

A light fixture unit (3) comprising a first low-beam lighting unit (7a) configured so as to emit a first low-beam light distribution pattern having horizontal cutoff lines, a second low-beam lighting unit (7d) configured so as to emit a second low-beam light distribution pattern having slanted cutoff lines, and high-beam lighting units (7b, 7c) that are positioned between the first low-beam lighting unit (7a) and the second low-beam lighting unit (7d) and are configured so as to emit a high-beam light distribution pattern. The first low-beam lighting unit (7a), the high-beam lighting units (7b, 7c), and the second low-beam lighting unit (7d) are aligned along the left-right direction of the light fixture unit (3).

Description

灯具ユニット及び車両用灯具Lamp unit and vehicle lamp
　本開示は、灯具ユニット及び当該灯具ユニットが搭載された車両用灯具に関する。 This disclosure relates to a lamp unit and a lamp for a vehicle on which the lamp unit is mounted.
　特許文献１は、左側灯具ユニットが搭載された左側車両用灯具と右側灯具ユニットが搭載された右側車両用灯具を開示している。 Patent Document 1 discloses a lamp for a left vehicle equipped with a left lamp unit and a lamp for a right vehicle equipped with a right lamp unit.
日本国特開２０１４－０７８４７７号公報Japanese Patent Application Laid-Open No. 2014-078477
　特許文献１に開示された左側車両用灯具及び右側車両用灯具では、左側車両用灯具に搭載される左側灯具ユニットと右側車両用当灯具に搭載される右側灯具ユニットを別途製造する必要がある。このように、左側車両用灯具及び右側車両用灯具に対して２つの異なる灯具ユニットを製造する必要があるため、灯具ユニット及び車両用灯具の製造コストが増加してしまう。上記観点より、灯具ユニット及び車両用灯具の製造コストを低減する手法について検討の余地がある。 For the left-sided vehicle lamp and the right-sided vehicle lamp disclosed in Patent Document 1, it is necessary to separately manufacture the left-side lamp unit mounted on the left-side vehicle lamp and the right-side lamp unit mounted on the right-side vehicle lamp. As described above, since it is necessary to manufacture two different lamp units for the left vehicle lamp and the right vehicle lamp, the manufacturing cost of the lamp unit and the vehicle lamp increases. From the above viewpoint, there is room for study on a method for reducing the manufacturing cost of the lamp unit and the lamp for vehicles.
　本開示は、灯具ユニット及び車両用灯具の製造コストを低減させることを目的とする。 The purpose of this disclosure is to reduce the manufacturing cost of the lamp unit and the lamp for vehicles.
　本開示の一態様に係る灯具ユニットは、
　第１カットオフラインを有する第１ロービーム用配光パターンを出射するように構成された第１ロービーム用照明ユニットと、
　第２カットオフラインを有する第２ロービーム用配光パターンを出射するように構成された第２ロービーム用照明ユニットと、
　前記第１ロービーム用照明ユニットと前記第２ロービーム用照明ユニットとの間に配置され、ハイビーム用配光パターンを出射するように構成されたハイビーム用照明ユニットと、を備える。
　前記第１ロービーム用照明ユニットと、前記第２ロービーム用照明ユニットと、前記ハイビーム用照明ユニットは、第１の方向において並んで配置される。 The lamp unit according to one aspect of the present disclosure is
A first low beam lighting unit configured to emit a first low beam light distribution pattern having a first cut offline,
A second low beam lighting unit configured to emit a second low beam light distribution pattern having a second cut-off line,
A high beam lighting unit arranged between the first low beam lighting unit and the second low beam lighting unit and configured to emit a high beam light distribution pattern is provided.
The first low beam lighting unit, the second low beam lighting unit, and the high beam lighting unit are arranged side by side in the first direction.
　上記構成によれば、第１ロービーム用照明ユニットと第２ロービーム用照明ユニットとの間にハイビーム用照明ユニットが配置されている。このため、車両からロービーム用配光パターンが出射される場合において、第１ロービーム用照明ユニット及び第２ロービーム用照明ユニットが点灯する一方で、ハイビーム用照明ユニットが消灯する。このように、ロービームを出射中の灯具ユニットの外観は、灯具ユニットの所定の位置を中心として左右対称となる。 According to the above configuration, the high beam lighting unit is arranged between the first low beam lighting unit and the second low beam lighting unit. Therefore, when the low beam light distribution pattern is emitted from the vehicle, the first low beam lighting unit and the second low beam lighting unit are turned on, while the high beam lighting unit is turned off. As described above, the appearance of the lamp unit while emitting the low beam is symmetrical with respect to the predetermined position of the lamp unit.
　したがって、同一の灯具ユニットが左側車両用灯具及び右側車両用灯具に搭載される場合にロービームを出射中の左側車両用灯具と右側車両用灯具の外観は略一致するので、同一の灯具ユニットを左側車両用灯具及び右側車両用灯具の両方に適用可能となる。このように、左側車両用灯具及び右側車両用灯具のそれぞれに対して２つの異なる灯具ユニットを製造する必要がなくなり、灯具ユニットの製造コストを低減することが可能となる。 Therefore, when the same lamp unit is mounted on the left vehicle lamp and the right vehicle lamp, the appearances of the left vehicle lamp and the right vehicle lamp emitting the low beam are substantially the same, so that the same lamp unit is placed on the left side. It can be applied to both vehicle lighting fixtures and right-side vehicle lighting fixtures. As described above, it is not necessary to manufacture two different lamp units for each of the left vehicle lamp and the right vehicle lamp, and the manufacturing cost of the lamp unit can be reduced.
　本開示によれば、灯具ユニット及び車両用灯具の製造コストを低減させることができる。 According to the present disclosure, it is possible to reduce the manufacturing cost of the lamp unit and the lamp for vehicles.
車両の正面図である。It is a front view of a vehicle. 左側車両用灯具の縦断面図である。It is a vertical cross-sectional view of a lamp for a left vehicle. 灯具ユニットの斜視図である。It is a perspective view of a lamp unit. 灯具ユニットの正面図である。It is a front view of a lamp unit. ヒートシンクと、回路基板と、発光素子と、インナーレンズを示す横断面図である。It is a cross-sectional view which shows the heat sink, a circuit board, a light emitting element, and an inner lens. 第１ロービーム用照明ユニットのレンズユニットを拡大して示した横断面図である。It is a cross-sectional view which showed the lens unit of the 1st low beam illumination unit in an enlarged manner. （ａ）は、第１ロービーム用照明ユニットを概略的に示した正面図である。（ｂ）は、ハイビーム用照明ユニットを概略的に示した正面図である。（ｃ）は、第２ロービーム用照明ユニットを概略的に示した正面図である。(A) is a front view schematically showing the lighting unit for the first low beam. (B) is a front view schematically showing a high beam lighting unit. (C) is a front view schematically showing the lighting unit for the second low beam. （ａ）は、ロービーム出射時において仮想スクリーン上に形成された配光パターンを概略的に示す図である。（ｂ）は、ハイビーム出射時において仮想スクリーン上に形成された配光パターンを概略的に示す図である。(A) is a diagram schematically showing a light distribution pattern formed on a virtual screen when a low beam is emitted. (B) is a diagram schematically showing a light distribution pattern formed on a virtual screen when a high beam is emitted. 照明ユニットの発光素子間の電気的接続関係を簡潔に示した図である。It is the figure which showed briefly the electrical connection relationship between the light emitting elements of a lighting unit. （ａ）は、ハイビーム用照明ユニットの点灯タイミングと第２ロービーム用照明ユニットの消灯タイミングとの間の関係を説明するための図である。（ｂ）は、ハイビーム用照明ユニットの消灯タイミングと第２ロービーム用照明ユニットの点灯タイミングとの間の関係を説明するための図である。FIG. 1A is a diagram for explaining the relationship between the lighting timing of the high beam lighting unit and the extinguishing timing of the second low beam lighting unit. (B) is a figure for demonstrating the relationship between the turn-off timing of the high beam lighting unit and the lighting timing of the second low beam lighting unit.
　以下、本発明の実施形態（以下、本実施形態という。）について図面を参照しながら説明する。本図面に示された各部材の寸法は、説明の便宜上、実際の各部材の寸法とは異なる場合がある。 Hereinafter, an embodiment of the present invention (hereinafter, referred to as the present embodiment) will be described with reference to the drawings. The dimensions of each member shown in this drawing may differ from the actual dimensions of each member for convenience of explanation.
　本実施形態の説明では、説明の便宜上、「左右方向」、「上下方向」、「前後方向」について適宜言及する場合がある。これらの方向は、図３に示す灯具ユニット３について設定された相対的な方向である。ここで、「左右方向」は、「左方向」及び「右方向」を含む方向である。「上下方向」は、「上方向」及び「下方向」を含む方向である。「前後方向」は、「前方向」及び「後方向」を含む方向である。左右方向と、上下方向と、前後方向のうちの一方は、残りの２方向に直交するものとする。 In the description of the present embodiment, for convenience of explanation, "horizontal direction", "vertical direction", and "front-back direction" may be appropriately referred to. These directions are relative directions set for the lamp unit 3 shown in FIG. Here, the "left-right direction" is a direction including the "left direction" and the "right direction". The "vertical direction" is a direction including "upward direction" and "downward direction". The "front-back direction" is a direction including the "forward direction" and the "rear direction". One of the left-right direction, the up-down direction, and the front-back direction shall be orthogonal to the remaining two directions.
　また、本実施形態では、「水平方向」は、上下方向（垂直方向）に垂直な方向であって、左右方向と前後方向を含む方向である。また、本実施形態の説明では、灯具ユニット３について設定された方向（左右方向、上下方向、前後方向）は、車両１及び左側車両用灯具２Ｌに設定された方向（左右方向、上下方向、前後方向）に一致するものとする。 Further, in the present embodiment, the "horizontal direction" is a direction perpendicular to the vertical direction (vertical direction), and is a direction including a horizontal direction and a front-back direction. Further, in the description of the present embodiment, the directions set for the lighting unit 3 (horizontal direction, vertical direction, front-rear direction) are the directions set for the vehicle 1 and the left-hand vehicle lighting tool 2L (horizontal direction, vertical direction, front-rear direction). It shall match the direction).
　最初に、図１を参照して本実施形態に係る車両１について説明する。図１は、左側車両用灯具２Ｌと右側車両用灯具２Ｒを備えた車両１の正面図である。図１に示すように、車両１の左前側に左側車両用灯具２Ｌが配置されていると共に、車両１の右前側に右側車両用灯具２Ｒが配置されている。左側車両用灯具２Ｌ及び右側車両用灯具２Ｒの各々には、同一の灯具ユニット３が搭載されている。 First, the vehicle 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a front view of a vehicle 1 provided with a left side vehicle light fixture 2L and a right side vehicle light fixture 2R. As shown in FIG. 1, the left front vehicle lighting 2L is arranged on the left front side of the vehicle 1, and the right vehicle lighting 2R is arranged on the right front side of the vehicle 1. The same lamp unit 3 is mounted on each of the left vehicle lamp 2L and the right vehicle lamp 2R.
　次に、図２を参照して左側車両用灯具２Ｌについて説明する。尚、左側車両用灯具２Ｌの構成は、右側車両用灯具２Ｒの構成と概ね同一であるため、右側車両用灯具２Ｒについての説明は割愛する。図２は、左側車両用灯具２Ｌの縦断面図を示す。図２に示すように、左側車両用灯具２Ｌは、ランプハウジング１２と、ランプハウジング１２の開口部を覆うランプカバー１４と、灯具ユニット３とを備える。灯具ユニット３は、ランプハウジング１２とランプカバー１４とによって形成された灯室Ｓ内に配置されている。 Next, the left side vehicle lamp 2L will be described with reference to FIG. Since the configuration of the left vehicle lamp 2L is almost the same as the configuration of the right vehicle lamp 2R, the description of the right vehicle lamp 2R is omitted. FIG. 2 shows a vertical cross-sectional view of the left vehicle lamp 2L. As shown in FIG. 2, the left vehicle lamp 2L includes a lamp housing 12, a lamp cover 14 that covers an opening of the lamp housing 12, and a lamp unit 3. The lamp unit 3 is arranged in the lamp chamber S formed by the lamp housing 12 and the lamp cover 14.
　次に、図３から図５を参照して灯具ユニット３の構造について具体的に説明する。図３は、灯具ユニット３の斜視図である。図４は、灯具ユニット３の正面図である。図５は、灯具ユニット３のうちヒートシンク６と、回路基板８と、発光素子５ａ～５ｄと、インナーレンズ４とを示す横断面図である。図３から図５に示すように、灯具ユニット３は、ヒートシンク６と、ブラケット９と、回路基板８と、発光素子５ａ～５ｄと、インナーレンズ４とを備える。以降では、説明の便宜上、発光素子５ａ～５ｄを総称して発光素子５という場合がある。 Next, the structure of the lamp unit 3 will be specifically described with reference to FIGS. 3 to 5. FIG. 3 is a perspective view of the lamp unit 3. FIG. 4 is a front view of the lamp unit 3. FIG. 5 is a cross-sectional view showing a heat sink 6, a circuit board 8, light emitting elements 5a to 5d, and an inner lens 4 of the lamp unit 3. As shown in FIGS. 3 to 5, the lamp unit 3 includes a heat sink 6, a bracket 9, a circuit board 8, light emitting elements 5a to 5d, and an inner lens 4. Hereinafter, for convenience of explanation, the light emitting elements 5a to 5d may be collectively referred to as a light emitting element 5.
　ヒートシンク６は、発光素子５から放出された熱を灯室Ｓ内の空気中に放出するように構成されている。ヒートシンク６は、例えば、アルミプレートを押出成形することで形成される。ブラケット９は、例えば、ポリカーボネートやナイロン等の樹脂材料により形成されていると共に、互いに完全に分離した第１ブラケット部９ａと第２ブラケット部９ｂとを有する。 The heat sink 6 is configured to release the heat released from the light emitting element 5 into the air in the lighting chamber S. The heat sink 6 is formed, for example, by extrusion molding an aluminum plate. The bracket 9 is formed of, for example, a resin material such as polycarbonate or nylon, and has a first bracket portion 9a and a second bracket portion 9b that are completely separated from each other.
　第１ブラケット部９ａは、ヒートシンク６の一端側においてヒートシンク６に固定されていると共に、光軸調整機構として機能するエイミングスクリュー９２及び支点機構として機能する支点スクリュー９５に接続されている（図４参照）。エイミングスクリュー９２は、上下方向における灯具ユニット３の光軸Ａｘを調整するように構成されている。第２ブラケット部９ｂは、ヒートシンク６の他端側においてヒートシンク６に固定されていると共に、光軸調整機構として機能するエイミングスクリュー９３（図４参照）に接続されている。エイミングスクリュー９３は、水平方向における灯具ユニット３の光軸Ａｘを調整するように構成されている。 The first bracket portion 9a is fixed to the heat sink 6 on one end side of the heat sink 6 and is connected to an aiming screw 92 that functions as an optical axis adjusting mechanism and a fulcrum screw 95 that functions as a fulcrum mechanism (see FIG. 4). ). The aiming screw 92 is configured to adjust the optical axis Ax of the lamp unit 3 in the vertical direction. The second bracket portion 9b is fixed to the heat sink 6 on the other end side of the heat sink 6 and is connected to an aiming screw 93 (see FIG. 4) that functions as an optical axis adjusting mechanism. The aiming screw 93 is configured to adjust the optical axis Ax of the lamp unit 3 in the horizontal direction.
　回路基板８は、ヒートシンク６の前面６０に配置されている。回路基板８は、図示しない電源回路に電気的に接続されている。この点において、電源回路は、回路基板８に搭載されてもよい。発光素子５ａ～５ｄは、回路基板８上に配置されていると共に、回路基板８を介して図示しない光源駆動回路に電気的に接続されている。発光素子５は、例えば、ＬＥＤ等の半導体発光素子である。発光素子５は、白色光を外部に向けて出射するように構成されており、例えば、青色ＬＥＤと黄色蛍光体とを備えてもよい。各発光素子５ａ～５ｄは、左右方向（第１の方向の一例）において同一直線上に配列されている。ハイビーム用照明ユニット７ｂを構成する発光素子５ｂと、ハイビーム用照明ユニット７ｃを構成する発光素子５ｃは、左右方向において、第１ロービーム用照明ユニット７ａを構成する発光素子５ａと第２ロービーム用照明ユニット７ｄを構成する発光素子５ｄとの間に配置されている。 The circuit board 8 is arranged on the front surface 60 of the heat sink 6. The circuit board 8 is electrically connected to a power supply circuit (not shown). In this respect, the power supply circuit may be mounted on the circuit board 8. The light emitting elements 5a to 5d are arranged on the circuit board 8 and are electrically connected to a light source drive circuit (not shown) via the circuit board 8. The light emitting element 5 is, for example, a semiconductor light emitting element such as an LED. The light emitting element 5 is configured to emit white light to the outside, and may include, for example, a blue LED and a yellow phosphor. The light emitting elements 5a to 5d are arranged on the same straight line in the left-right direction (an example of the first direction). The light emitting element 5b constituting the high beam lighting unit 7b and the light emitting element 5c constituting the high beam lighting unit 7c are the light emitting element 5a forming the first low beam lighting unit 7a and the second low beam lighting unit in the left-right direction. It is arranged between the light emitting element 5d and the light emitting element 5d constituting the 7d.
　発光素子５ａ～５ｃの各々は、その下端が左右方向に対して平行となるように回路基板８に配置されている一方で、発光素子５ｄは、その下端が左右方向に対して斜めとなるように回路基板８に配置されている。発光素子５ｄの下端が左右方向に対して斜めとなっているため、後述するように第２ロービーム用照明ユニット７ｄは、斜めカットオフラインＬ２（第２カットオフラインの一例）を有するロービーム用配光パターンＰ２（第２ロービーム用配光パターンの一例）を形成することができる（図８の（ａ）参照）。 Each of the light emitting elements 5a to 5c is arranged on the circuit board 8 so that the lower ends thereof are parallel to the left-right direction, while the lower ends of the light emitting elements 5d are oblique to the left-right direction. Is arranged on the circuit board 8. Since the lower end of the light emitting element 5d is oblique with respect to the left-right direction, the second low beam lighting unit 7d has a low beam light distribution pattern having an oblique cut-off line L2 (an example of the second cut-off line) as described later. P2 (an example of the light distribution pattern for the second low beam) can be formed (see (a) of FIG. 8).
　インナーレンズ４は、各発光素子５ａ～５ｄを覆うようにヒートシンク６の前面６０に配置されている。インナーレンズ４は、例えば、ポリカーボネートやアクリル樹脂等の透明な樹脂材料により形成されている。インナーレンズ４は、左右方向において同一直線上に配列されたレンズユニット４０ａ～４０ｄを有する。各レンズユニット４０ａ～４０ｄは一体的に形成されている。 The inner lens 4 is arranged on the front surface 60 of the heat sink 6 so as to cover the light emitting elements 5a to 5d. The inner lens 4 is formed of, for example, a transparent resin material such as polycarbonate or acrylic resin. The inner lens 4 has lens units 40a to 40d arranged on the same straight line in the left-right direction. Each lens unit 40a to 40d is integrally formed.
　図５に示すように、レンズユニット４０ａ（第１レンズユニットの一例）は、前後方向において発光素子５ａ（第１発光素子の一例）に対向する。レンズユニット４０ａは、発光素子５ａから出射された光を車両１の外部に向けて出射することで水平カットオフラインＬ１（第１カットオフラインの一例）を有するロービーム用配光パターンＰ１（第１ロービーム用配光パターンの一例）を形成するように構成されている（図８の（ａ）参照）。ここで、図８の（ａ）は、ロービーム出射時において車両１の２５ｍ前方に配置された仮想スクリーン上に形成された配光パターンを概略的に示す図である。図８の（ｂ）は、ハイビーム出射時において当該仮想スクリーン上に形成された配光パターンを概略的に示す図である。ロービーム用配光パターンＰ１は、Ｈ－Ｈ線に沿って延びるように形成されている。 As shown in FIG. 5, the lens unit 40a (an example of the first lens unit) faces the light emitting element 5a (an example of the first light emitting element) in the front-rear direction. The lens unit 40a emits the light emitted from the light emitting element 5a toward the outside of the vehicle 1 to have a horizontal cut-off line L1 (an example of the first cut-off line) for a low beam light distribution pattern P1 (for the first low beam). It is configured to form an example of a light distribution pattern) (see (a) in FIG. 8). Here, FIG. 8A is a diagram schematically showing a light distribution pattern formed on a virtual screen arranged 25 m ahead of the vehicle 1 when the low beam is emitted. FIG. 8B is a diagram schematically showing a light distribution pattern formed on the virtual screen when the high beam is emitted. The low beam light distribution pattern P1 is formed so as to extend along the HH line.
　レンズユニット４０ａは、中央光透過部４２ａと、周辺光透過部４３ａとを有する。中央光透過部４２ａは、前後方向において発光素子５ａに対向すると共に、発光素子５ａから出射された光の一部を車両１の外部に向けて出射するように構成されている。周辺光透過部４３ａは、中央光透過部４２ａを囲むように設けられ、発光素子５ａから出射された光の他の一部を車両１の外部に向けて全反射するように構成されている。中央光透過部４２ａによって形成される配光パターンと周辺光透過部４３ａによって形成される配光パターンとを合成することでロービーム用配光パターンＰ１が形成される。 The lens unit 40a has a central light transmitting portion 42a and a peripheral light transmitting portion 43a. The central light transmitting portion 42a is configured to face the light emitting element 5a in the front-rear direction and to emit a part of the light emitted from the light emitting element 5a toward the outside of the vehicle 1. The peripheral light transmitting portion 43a is provided so as to surround the central light transmitting portion 42a, and is configured to totally reflect the other part of the light emitted from the light emitting element 5a toward the outside of the vehicle 1. The low beam light distribution pattern P1 is formed by synthesizing the light distribution pattern formed by the central light transmitting portion 42a and the light distribution pattern formed by the peripheral light transmitting portion 43a.
　レンズユニット４０ａには、２つの凹部５４ａ，５６ａが形成されている。凹部５４ａは凹部５６ａに連通しており、凹部５６ａの径は凹部５４ａの径よりも大きい。中央光透過部４２ａは、凹部５４ａの底面を構成する出射面５２ａと、入射面４７ａとを有する。周辺光透過部４３ａは、凹部５６ａの底面を構成する出射面５３ａと、入射面４９ａと、全反射面４６ａとを有する。本実施形態では、発光素子５ａとレンズユニット４０ａにより、ロービーム用配光パターンＰ１を形成するように構成された第１ロービーム用照明ユニット７ａが構成される。 Two recesses 54a and 56a are formed in the lens unit 40a. The recess 54a communicates with the recess 56a, and the diameter of the recess 56a is larger than the diameter of the recess 54a. The central light transmitting portion 42a has an emitting surface 52a forming the bottom surface of the recess 54a and an incident surface 47a. The peripheral light transmitting portion 43a has an exit surface 53a forming the bottom surface of the recess 56a, an incident surface 49a, and a total reflection surface 46a. In the present embodiment, the light emitting element 5a and the lens unit 40a constitute a first low beam illumination unit 7a configured to form a low beam light distribution pattern P1.
　レンズユニット４０ｂ（第３レンズユニットの一例）は、前後方向において発光素子５ｂ（第３発光素子の一例）に対向する。レンズユニット４０ｂは、発光素子５ｂから出射された光を車両１の外部に向けて出射することでハイビーム用配光パターンＰ３を形成するように構成されている（図８の（ｂ）参照）。レンズユニット４０ｂは、中央光透過部４２ｂと、周辺光透過部４３ｂとを有する。中央光透過部４２ｂは、前後方向において発光素子５ｂに対向すると共に、発光素子５ｂから出射された光の一部を車両１の外部に向けて出射するように構成されている。周辺光透過部４３ｂは、中央光透過部４２ｂを囲むように設けられ、発光素子５ｂから出射された光の他の一部を車両１の外部に向けて全反射するように構成されている。中央光透過部４２ｂによって形成された配光パターンと周辺光透過部４３ｂとによって形成された配光パターンとを合成することでハイビーム用配光パターンＰ３が形成される。 The lens unit 40b (an example of a third lens unit) faces the light emitting element 5b (an example of a third light emitting element) in the front-rear direction. The lens unit 40b is configured to form a high beam light distribution pattern P3 by emitting light emitted from the light emitting element 5b toward the outside of the vehicle 1 (see FIG. 8B). The lens unit 40b has a central light transmitting portion 42b and a peripheral light transmitting portion 43b. The central light transmitting portion 42b is configured to face the light emitting element 5b in the front-rear direction and to emit a part of the light emitted from the light emitting element 5b toward the outside of the vehicle 1. The peripheral light transmitting portion 43b is provided so as to surround the central light transmitting portion 42b, and is configured to totally reflect the other part of the light emitted from the light emitting element 5b toward the outside of the vehicle 1. The high beam light distribution pattern P3 is formed by synthesizing the light distribution pattern formed by the central light transmitting portion 42b and the light distribution pattern formed by the peripheral light transmitting portion 43b.
　レンズユニット４０ｂには、２つの凹部５４ｂ，５６ｂが形成されている。凹部５４ｂは凹部５６ｂに連通しており、凹部５６ｂの径は凹部５４ｂの径よりも大きい。中央光透過部４２ｂは、凹部５４ｂの底面を構成する出射面５２ｂと、入射面４７ｂとを有する。周辺光透過部４３ｂは、凹部５６ｂの底面を構成する出射面５３ｂと、入射面４９ｂと、全反射面４６ｂとを有する。本実施形態では、発光素子５ｂとレンズユニット４０ｂにより、ハイビーム用配光パターンＰ３を形成するように構成されたハイビーム用照明ユニット７ｂが構成される。 Two recesses 54b and 56b are formed in the lens unit 40b. The recess 54b communicates with the recess 56b, and the diameter of the recess 56b is larger than the diameter of the recess 54b. The central light transmitting portion 42b has an emitting surface 52b forming the bottom surface of the recess 54b and an incident surface 47b. The peripheral light transmitting portion 43b has an exit surface 53b forming the bottom surface of the recess 56b, an incident surface 49b, and a total reflection surface 46b. In the present embodiment, the light emitting element 5b and the lens unit 40b constitute a high beam illumination unit 7b configured to form a high beam light distribution pattern P3.
　レンズユニット４０ｃ（第３レンズユニットの一例）は、前後方向において発光素子５ｃ（第３発光素子の一例）に対向する。レンズユニット４０ｃは、レンズユニット４０ｂと同一の構成を有し、発光素子５ｃから出射された光を車両１の外部に向けて出射することでハイビーム用配光パターンＰ４を形成するように構成されている（図８の（ｂ）参照）。本実施形態の説明では、レンズユニット４０ｃにより形成されるハイビーム用配光パターンＰ４は、レンズユニット４０ｂにより形成されるハイビーム用配光パターンＰ３に完全に重なるものとする。レンズユニット４０ｃは、中央光透過部４２ｃと、周辺光透過部４３ｃとを有する。中央光透過部４２ｃは、前後方向において発光素子５ｃに対向すると共に、発光素子５ｃから出射された光の一部を車両１の外部に向けて出射するように構成されている。周辺光透過部４３ｃは、中央光透過部４２ｃを囲むように設けられ、発光素子５ｃから出射された光の他の一部を車両１の外部に向けて全反射するように構成されている。中央光透過部４２ｃによって形成された配光パターンと周辺光透過部４３ｃとによって形成された配光パターンとを合成することでハイビーム用配光パターンＰ４が形成される。 The lens unit 40c (an example of a third lens unit) faces the light emitting element 5c (an example of a third light emitting element) in the front-rear direction. The lens unit 40c has the same configuration as the lens unit 40b, and is configured to form a high beam light distribution pattern P4 by emitting light emitted from the light emitting element 5c toward the outside of the vehicle 1. (See (b) in FIG. 8). In the description of the present embodiment, the high beam light distribution pattern P4 formed by the lens unit 40c completely overlaps the high beam light distribution pattern P3 formed by the lens unit 40b. The lens unit 40c has a central light transmitting portion 42c and a peripheral light transmitting portion 43c. The central light transmitting portion 42c is configured to face the light emitting element 5c in the front-rear direction and to emit a part of the light emitted from the light emitting element 5c toward the outside of the vehicle 1. The peripheral light transmitting portion 43c is provided so as to surround the central light transmitting portion 42c, and is configured to totally reflect the other part of the light emitted from the light emitting element 5c toward the outside of the vehicle 1. The high beam light distribution pattern P4 is formed by synthesizing the light distribution pattern formed by the central light transmitting portion 42c and the light distribution pattern formed by the peripheral light transmitting portion 43c.
　レンズユニット４０ｃには、２つの凹部５４ｃ，５６ｃが形成されている。凹部５４ｃは凹部５６ｃに連通しており、凹部５６ｃの径は凹部５４ｃの径よりも大きい。中央光透過部４２ｃは、凹部５４ｃの底面を構成する出射面５２ｃと、入射面４７ｃとを有する。周辺光透過部４３ｃは、凹部５６ｃの底面を構成する出射面５３ｃと、入射面４９ｃと、全反射面４６ｃとを有する。本実施形態では、発光素子５ｃとレンズユニット４０ｃにより、ハイビーム用配光パターンＰ４を形成するように構成されたハイビーム用照明ユニット７ｃが構成される。 Two recesses 54c and 56c are formed in the lens unit 40c. The recess 54c communicates with the recess 56c, and the diameter of the recess 56c is larger than the diameter of the recess 54c. The central light transmitting portion 42c has an emitting surface 52c forming the bottom surface of the recess 54c and an incident surface 47c. The peripheral light transmitting portion 43c has an exit surface 53c forming the bottom surface of the recess 56c, an incident surface 49c, and a total reflection surface 46c. In the present embodiment, the light emitting element 5c and the lens unit 40c constitute a high beam illumination unit 7c configured to form a high beam light distribution pattern P4.
　レンズユニット４０ｄ（第２レンズユニットの一例）は、前後方向において発光素子５ｄ（第２発光素子の一例）に対向する。レンズユニット４０ｄは、発光素子５ｄから出射された光を車両１の外部に向けて出射することで斜めカットオフラインＬ２を有するロービーム用配光パターンＰ２を形成するように構成されている（図８の（ａ）参照）。図８の（ａ）に示すように、ロービーム用配光パターンＰ２は、Ｈ－Ｈ線に対して斜めに延びるように形成されている。レンズユニット４０ａにより形成されたロービーム用配光パターンＰ１とレンズユニット４０ｄにより形成されたロービーム用配光パターンＰ２によって、ロービーム出射時の配光パターンが形成される。レンズユニット４０ｄは、中央光透過部４２ｄと、周辺光透過部４３ｄとを有する。中央光透過部４２ｄは、前後方向において発光素子５ｄに対向すると共に、発光素子５ｄから出射された光の一部を車両１の外部に向けて出射するように構成されている。周辺光透過部４３ｄは、中央光透過部４２ｄを囲むように設けられ、発光素子５ｄから出射された光の他の一部を車両１の外部に向けて全反射するように構成されている。中央光透過部４２ｄによって形成された配光パターンと周辺光透過部４３ｄとによって形成された配光パターンとを合成することでロービーム用配光パターンＰ２が形成される。 The lens unit 40d (an example of a second lens unit) faces the light emitting element 5d (an example of a second light emitting element) in the front-rear direction. The lens unit 40d is configured to form a low beam light distribution pattern P2 having an oblique cut-off line L2 by emitting light emitted from the light emitting element 5d toward the outside of the vehicle 1 (FIG. 8). (A). As shown in FIG. 8A, the low beam light distribution pattern P2 is formed so as to extend obliquely with respect to the HH line. The low beam light distribution pattern P1 formed by the lens unit 40a and the low beam light distribution pattern P2 formed by the lens unit 40d form a light distribution pattern when the low beam is emitted. The lens unit 40d has a central light transmitting portion 42d and a peripheral light transmitting portion 43d. The central light transmitting portion 42d is configured to face the light emitting element 5d in the front-rear direction and to emit a part of the light emitted from the light emitting element 5d toward the outside of the vehicle 1. The peripheral light transmitting portion 43d is provided so as to surround the central light transmitting portion 42d, and is configured to totally reflect the other part of the light emitted from the light emitting element 5d toward the outside of the vehicle 1. The low beam light distribution pattern P2 is formed by synthesizing the light distribution pattern formed by the central light transmitting portion 42d and the light distribution pattern formed by the peripheral light transmitting portion 43d.
　レンズユニット４０ｄには、２つの凹部５４ｄ，５６ｄが形成されている。凹部５４ｄは凹部５６ｄに連通しており、凹部５６ｄの径は凹部５４ｄの径よりも大きい。中央光透過部４２ｄは、凹部５４ｄの底面を構成する出射面５２ｄと、入射面４７ｄとを有する。周辺光透過部４３ｄは、凹部５６ｄの底面を構成する出射面５３ｄと、入射面４９ｄと、全反射面４６ｄとを有する。本実施形態では、発光素子５ｄとレンズユニット４０ｄにより、ロービーム用配光パターンＰ２を形成するように構成された第２ロービーム用照明ユニット７ｄが構成される。 Two recesses 54d and 56d are formed in the lens unit 40d. The recess 54d communicates with the recess 56d, and the diameter of the recess 56d is larger than the diameter of the recess 54d. The central light transmitting portion 42d has an emitting surface 52d forming the bottom surface of the recess 54d and an incident surface 47d. The peripheral light transmitting portion 43d has an exit surface 53d forming the bottom surface of the recess 56d, an incident surface 49d, and a total reflection surface 46d. In the present embodiment, the light emitting element 5d and the lens unit 40d constitute a second low beam illumination unit 7d configured to form the low beam light distribution pattern P2.
　このように、本実施形態では、灯具ユニット３は、第１ロービーム用照明ユニット７ａ（以下では、単に「照明ユニット７ａ」という。）と、ハイビーム用照明ユニット７ｂ，７ｃ（以下では、単に「照明ユニット７ｂ，７ｃ」という。）と、第２ロービーム用照明ユニット７ｄ（以下では、単に「照明ユニット７ｄ」という。）を備える。図５に示すように、これらの照明ユニット７ａ～７ｄは、左右方向において並んで配置されている。照明ユニット７ｂ，７ｃは、左右方向において照明ユニット７ａと照明ユニット７ｄとの間に配置されている。 As described above, in the present embodiment, the lighting fixture unit 3 includes the first low beam lighting unit 7a (hereinafter, simply referred to as “lighting unit 7a”) and the high beam lighting units 7b, 7c (hereinafter, simply “lighting”). Units 7b and 7c ”) and a second low beam lighting unit 7d (hereinafter, simply referred to as“ lighting unit 7d ”). As shown in FIG. 5, these lighting units 7a to 7d are arranged side by side in the left-right direction. The lighting units 7b and 7c are arranged between the lighting unit 7a and the lighting unit 7d in the left-right direction.
　また、中央光透過部４２ａ～４２ｄの出射面５２ａ～５２ｄは同一平面上に位置すると共に、周辺光透過部４３ａ～４３ｄの出射面５３ａ～５３ｄは同一平面上に位置している。 Further, the exit surfaces 52a to 52d of the central light transmitting portions 42a to 42d are located on the same plane, and the exit surfaces 53a to 53d of the peripheral light transmitting portions 43a to 43d are located on the same plane.
　次に、図６を参照してレンズユニット４０ａについて具体的に説明する。図６は、レンズユニット４０ａを拡大して示した横断面図である。図６に示すように、発光素子５ａから出射された光の一部は、中央光透過部４２ａの入射面４７ａに入射した後に出射面５２ａに到達する。その後、出射面５２ａに到達した光は、出射面５２ａに形成された拡散レンズ素子４８ａによって拡散された状態で外部に出射される。一方、発光素子５ａから出射された光の他の一部は、周辺光透過部４３ａの入射面４９ａに入射した後に全反射面４６ａによって全反射される。その後、全反射面４６ａにより全反射された光は、出射面５３ａに到達した後に、出射面５３ａに形成された拡散レンズ素子４８ａによって拡散された状態で外部に出射される。このように、レンズユニット４０ａによりロービーム用配光パターンＰ１が形成される。 Next, the lens unit 40a will be specifically described with reference to FIG. FIG. 6 is an enlarged cross-sectional view of the lens unit 40a. As shown in FIG. 6, a part of the light emitted from the light emitting element 5a reaches the exit surface 52a after being incident on the incident surface 47a of the central light transmitting portion 42a. After that, the light that has reached the exit surface 52a is emitted to the outside in a state of being diffused by the diffusion lens element 48a formed on the emission surface 52a. On the other hand, the other part of the light emitted from the light emitting element 5a is totally reflected by the total reflection surface 46a after being incident on the incident surface 49a of the peripheral light transmitting portion 43a. After that, the light totally reflected by the total reflection surface 46a reaches the exit surface 53a and is then emitted to the outside in a state of being diffused by the diffusion lens element 48a formed on the emission surface 53a. In this way, the low beam light distribution pattern P1 is formed by the lens unit 40a.
　レンズユニット４０ｂ～４０ｄもレンズユニット４０ａと同様の構成を有している。この点において、図４に示すように、レンズユニット４０ｂ～４０ｄの出射面も拡散レンズ素子４８ｂ～４８ｄを有している。同図に示すように、レンズユニット４０ａ～４０ｃに形成された拡散レンズ素子４８ａ～４８ｃの各々は、上下方向に略平行に延びるように形成されている。一方で、レンズユニット４０ｄに形成された拡散レンズ素子４８ｄは、発光素子５ｄの下端が左右方向に対して角度α（α＞０°、例えば、α＝１５°）だけ斜めになっているため、上下方向に対して角度αだけ斜めに延びるように形成されている。 The lens units 40b to 40d also have the same configuration as the lens unit 40a. In this respect, as shown in FIG. 4, the exit surfaces of the lens units 40b to 40d also have diffusion lens elements 48b to 48d. As shown in the figure, each of the diffusion lens elements 48a to 48c formed in the lens units 40a to 40c is formed so as to extend substantially parallel in the vertical direction. On the other hand, in the diffusion lens element 48d formed in the lens unit 40d, the lower end of the light emitting element 5d is inclined by an angle α (α> 0 °, for example, α = 15 °) with respect to the left-right direction. It is formed so as to extend diagonally by an angle α with respect to the vertical direction.
　次に、図７を参照して、レンズユニット４０ａの周辺光透過部４３ａと、レンズユニット４０ｂの周辺光透過部４３ｂと、レンズユニット４０ｄの周辺光透過部４３ｄの構成について以下に説明する。図７の（ａ）は、照明ユニット７ａを概略的に示した正面図である。図７の（ｂ）は、照明ユニット７ｂを概略的に示した正面図である。図７の（ｃ）は、照明ユニット７ｄを概略的に示した正面図である。図７の（ａ）に示すように、レンズユニット４０ａの周辺光透過部４３ａは、中央光透過部４２ａをその周方向において囲むように設けられている。周辺光透過部４３ａは、その周方向に沿って８つの反射領域Ｒ１～Ｒ８に区分されている。反射領域Ｒ１～Ｒ８の各々は、レンズユニット４０ａの中心から４５°の角度領域を有する。反射領域Ｒ１～Ｒ８の各々は、互いに外形が異なる全反射面４６ａを有する。 Next, with reference to FIG. 7, the configuration of the peripheral light transmitting portion 43a of the lens unit 40a, the peripheral light transmitting portion 43b of the lens unit 40b, and the peripheral light transmitting portion 43d of the lens unit 40d will be described below. FIG. 7A is a front view schematically showing the lighting unit 7a. FIG. 7B is a front view schematically showing the lighting unit 7b. FIG. 7C is a front view schematically showing the lighting unit 7d. As shown in FIG. 7A, the peripheral light transmitting portion 43a of the lens unit 40a is provided so as to surround the central light transmitting portion 42a in the circumferential direction thereof. The peripheral light transmitting portion 43a is divided into eight reflection regions R1 to R8 along the circumferential direction thereof. Each of the reflection regions R1 to R8 has an angle region of 45 ° from the center of the lens unit 40a. Each of the reflection regions R1 to R8 has a total reflection surface 46a having different outer shapes from each other.
　図７の（ｂ）に示すように、レンズユニット４０ｂの周辺光透過部４３ｂは、中央光透過部４２ｂをその周方向において囲むように設けられている。周辺光透過部４３ｂは、その周方向において複数の反射領域に区分されていない。尚、レンズユニット４０ｃは、レンズユニット４０ｂと同様の構成を有するため、レンズユニット４０ｃの周辺光透過部４３ｃもその周方向において複数の反射領域に区分されていない。 As shown in FIG. 7B, the peripheral light transmitting portion 43b of the lens unit 40b is provided so as to surround the central light transmitting portion 42b in the circumferential direction thereof. The peripheral light transmitting portion 43b is not divided into a plurality of reflection regions in the circumferential direction thereof. Since the lens unit 40c has the same configuration as the lens unit 40b, the peripheral light transmitting portion 43c of the lens unit 40c is not divided into a plurality of reflection regions in the circumferential direction thereof.
　図７の（ｃ）に示すように、レンズユニット４０ｄの周辺光透過部４３ｄは、中央光透過部４２ｄをその周方向において囲むように設けられている。周辺光透過部４３ｄは、その周方向に沿って８つの反射領域Ｒ１０～Ｒ１７に区分されている。各反射領域Ｒ１０～Ｒ１７の各々は、レンズユニット４０ｄの中心から４５°の角度領域を有する。各反射領域Ｒ１０～Ｒ１７の各々は、互いに形状が異なる全反射面４６ｄを有する。 As shown in FIG. 7C, the peripheral light transmitting portion 43d of the lens unit 40d is provided so as to surround the central light transmitting portion 42d in the circumferential direction thereof. The peripheral light transmitting portion 43d is divided into eight reflection regions R10 to R17 along the circumferential direction thereof. Each of the reflection regions R10 to R17 has an angle region of 45 ° from the center of the lens unit 40d. Each of the reflection regions R10 to R17 has a total reflection surface 46d having a different shape from each other.
　次に、本実施形態に係る灯具ユニット３の作用効果について以下に記載する。 Next, the action and effect of the lamp unit 3 according to the present embodiment will be described below.
　本実施形態によれば、照明ユニット７ａと照明ユニット７ｄとの間に照明ユニット７ｂ，７ｃが配置されている。このため、車両１からロービーム用配光パターンＰ１，Ｐ２が出射される場合において、照明ユニット７ａ，７ｂが点灯する一方で、照明ユニット７ｂ，７ｃが消灯する。このように、ロービームを出射中の灯具ユニット３の外観は、灯具ユニット３の左右方向の中心位置を中心として左右対称となる。したがって、同一の灯具ユニット３が左側車両用灯具２Ｌ及び右側車両用灯具２Ｒに搭載されている場合に、ロービームを出射中の左側車両用灯具２Ｌの灯具ユニット３の外観とロービームを出射中の右側車両用灯具２Ｒの灯具ユニット３の外観は略一致する。このため、同一の灯具ユニット３を左側車両用灯具２Ｌ及び右側車両用灯具２Ｒの両方に適用可能となる。このように、左側車両用灯具２Ｌ及び右側車両用灯具２Ｒのそれぞれに対して２つの異なる灯具ユニットを製造する必要がなくなり、灯具ユニット３及び車両用灯具の製造コストを低減することが可能となる。 According to this embodiment, the lighting units 7b and 7c are arranged between the lighting unit 7a and the lighting unit 7d. Therefore, when the low beam light distribution patterns P1 and P2 are emitted from the vehicle 1, the lighting units 7a and 7b are turned on, while the lighting units 7b and 7c are turned off. As described above, the appearance of the lamp unit 3 while emitting the low beam is symmetrical with respect to the center position in the left-right direction of the lamp unit 3. Therefore, when the same lamp unit 3 is mounted on the left vehicle lamp 2L and the right vehicle lamp 2R, the appearance of the lamp unit 3 of the left vehicle lamp 2L emitting the low beam and the right side emitting the low beam. The appearances of the lamp unit 3 of the vehicle lamp 2R are substantially the same. Therefore, the same lamp unit 3 can be applied to both the left vehicle lamp 2L and the right vehicle lamp 2R. As described above, it is not necessary to manufacture two different lamp units for each of the left vehicle lamp 2L and the right vehicle lamp 2R, and it is possible to reduce the manufacturing cost of the lamp unit 3 and the vehicle lamp. ..
　また、本実施形態に係る灯具ユニット３では、レンズユニット４０ａ～４０ｄの各々が発光素子から出射された光に基づいて配光パターンを形成しているため、レンズユニットと発光素子との間の位置調整が重要となる。この点において、本実施形態では、レンズユニット４０ａ～４０ｄがインナーレンズ４内において一体的に形成されているため、レンズユニット４０ａと発光素子５ａとの間の位置調整と、レンズユニット４０ｂと発光素子５ｂとの間の位置調整と、レンズユニット４０ｃと発光素子５ｃとの間の位置調整と、レンズユニット４０ｄと発光素子５ｄとの間の位置調整とを一括で行うことができる。 Further, in the lamp unit 3 according to the present embodiment, since each of the lens units 40a to 40d forms a light distribution pattern based on the light emitted from the light emitting element, the position between the lens unit and the light emitting element. Adjustment is important. In this respect, in the present embodiment, since the lens units 40a to 40d are integrally formed in the inner lens 4, the position adjustment between the lens unit 40a and the light emitting element 5a and the position adjustment between the lens unit 40b and the light emitting element 4b and the light emitting element are performed. The position adjustment between the lens unit 40c and the light emitting element 5c, and the position adjustment between the lens unit 40d and the light emitting element 5d can be performed collectively.
　また、本実施形態では、レンズユニット４０ａ～４０ｄの各々が中央光透過部と周辺光透過部とを有している。このため、レンズユニットの中央光透過部と周辺光透過部により、発光素子から出射された光の利用効率を高めた状態で配光パターンを形成することが可能となる。 Further, in the present embodiment, each of the lens units 40a to 40d has a central light transmitting portion and a peripheral light transmitting portion. Therefore, the central light transmitting portion and the peripheral light transmitting portion of the lens unit make it possible to form a light distribution pattern in a state where the utilization efficiency of the light emitted from the light emitting element is enhanced.
　次に、図８を参照してロービーム出射時における配光パターンとハイビーム出射時における配光パターンについてそれぞれ以下に説明する。図８の（ａ）に示すように、灯具ユニット３がロービームを出射するときには、ロービーム用配光パターンＰ１，Ｐ２が車両１の外部に出射される一方で、ハイビーム用配光パターンＰ３，Ｐ４は車両１の外部に出射されない。即ち、灯具ユニット３がロービームを出射するときには、照明ユニット７ａ，７ｄが点灯する一方で、照明ユニット７ｂ，７ｃは消灯する。 Next, with reference to FIG. 8, the light distribution pattern when the low beam is emitted and the light distribution pattern when the high beam is emitted will be described below. As shown in FIG. 8A, when the lamp unit 3 emits a low beam, the low beam light distribution patterns P1 and P2 are emitted to the outside of the vehicle 1, while the high beam light distribution patterns P3 and P4 are emitted. It is not emitted to the outside of the vehicle 1. That is, when the lamp unit 3 emits a low beam, the lighting units 7a and 7d are turned on, while the lighting units 7b and 7c are turned off.
　その一方で、図８の（ｂ）に示すように、灯具ユニット３がハイビームを出射するときには、ハイビーム用配光パターンＰ３，Ｐ４及びロービーム用配光パターンＰ１が出射される一方で、ロービーム用配光パターンＰ２は出射されない。即ち、灯具ユニット３がハイビームを出射するときには、照明ユニット７ａ，７ｂ，７ｃが点灯する一方で、照明ユニット７ｄは消灯する。このように、灯具ユニット３がハイビームを出射中において照明ユニット７ｄが消灯しているため、灯具ユニット３の消費電力を低減することができると共に、灯具ユニット３から放射される放熱量を低減することができる。 On the other hand, as shown in FIG. 8B, when the lamp unit 3 emits a high beam, the high beam light distribution patterns P3 and P4 and the low beam light distribution pattern P1 are emitted, while the low beam arrangement. The light pattern P2 is not emitted. That is, when the lamp unit 3 emits a high beam, the lighting units 7a, 7b, and 7c are turned on, while the lighting unit 7d is turned off. As described above, since the lighting unit 7d is turned off while the lamp unit 3 is emitting the high beam, the power consumption of the lamp unit 3 can be reduced and the amount of heat radiated from the lamp unit 3 can be reduced. Can be done.
　次に、図９を参照して、照明ユニット７ａ～７ｄの発光素子５ａ～５ｄ間の電気的接続関係について以下に説明する。図９に示すように、発光素子５ａは、発光素子５ｄ，５ｂに接続されている。発光素子５ｄと切替スイッチ２１が互いに直列接続されていると共に、発光素子５ｂ，５ｃと切替スイッチ２２が互いに直列接続されている。また、発光素子５ｄと切替スイッチ２１からなるグループは、発光素子５ｂ，５ｃ及び切替スイッチ２２からなるグループに並列接続されている。切替スイッチ２１，２２は、例えば、電界効果トランジスタ（ＦＥＴ）によって実現される。灯具ユニット３がロービームを出射する場合には、切替スイッチ２１がＯＮとなる一方で、切替スイッチ２２がＯＦＦとなる。灯具ユニット３がハイビームを出射する場合には、切替スイッチ２１がＯＦＦとなる一方で、切替スイッチ２２がＯＮとなる。 Next, with reference to FIG. 9, the electrical connection relationship between the light emitting elements 5a to 5d of the lighting units 7a to 7d will be described below. As shown in FIG. 9, the light emitting element 5a is connected to the light emitting elements 5d and 5b. The light emitting element 5d and the changeover switch 21 are connected in series with each other, and the light emitting elements 5b and 5c and the changeover switch 22 are connected in series with each other. Further, the group including the light emitting element 5d and the changeover switch 21 is connected in parallel to the group including the light emitting elements 5b and 5c and the changeover switch 22. The changeover switches 21 and 22 are realized by, for example, a field effect transistor (FET). When the lamp unit 3 emits a low beam, the changeover switch 21 is turned on, while the changeover switch 22 is turned off. When the lamp unit 3 emits a high beam, the changeover switch 21 is turned off, while the changeover switch 22 is turned on.
　次に、図１０の（ａ）を参照して、灯具ユニット３から出射されるビームがロービームからハイビームに切り替わる場合の照明ユニット７ｂ，７ｃの点灯タイミングと照明ユニット７ｄの消灯タイミングとの関係について説明する。この場合、照明ユニット７ｂ，７ｃが消灯状態（ＯＦＦ状態）から点灯状態（ＯＮ状態）に移行する点灯タイミングｔｏｎは、照明ユニット７ｄが点灯状態から消灯状態に移行する消灯タイミングｔｏｆｆよりも早くなる。具体的には、切替スイッチ２２がＯＦＦからＯＮになるタイミングは、切替スイッチ２１がＯＮからＯＦＦになるタイミングよりも早くなる。このように、照明ユニット７ｂ，７ｃが点灯する直前に照明ユニット７ｄが消灯してしまうといった状況を防止することができる。 Next, with reference to FIG. 10A, the relationship between the lighting timing of the lighting units 7b and 7c and the extinguishing timing of the lighting unit 7d when the beam emitted from the lighting unit 3 is switched from the low beam to the high beam will be described. do. In this case, the lighting unit 7b, lighting timing t on which 7c shifts to the lighting state (ON state) from the OFF state (OFF state), earlier than off timing t off of the lighting unit 7d shifts from a lighting state to the OFF state Become. Specifically, the timing at which the changeover switch 22 changes from OFF to ON is earlier than the timing at which the changeover switch 21 changes from ON to OFF. In this way, it is possible to prevent a situation in which the lighting unit 7d is turned off immediately before the lighting units 7b and 7c are turned on.
　次に、図１０の（ｂ）を参照して、灯具ユニット３から出射されるビームがハイビームからロービームに切り替わる場合の照明ユニット７ｂ，７ｃの消灯タイミングと照明ユニット７ｄの点灯タイミングとの関係について説明する。この場合、照明ユニット７ｄが消灯状態から点灯状態に移行する点灯タイミングｔｏｎは、照明ユニット７ｂ，７ｃが点灯状態から消灯状態に移行する消灯タイミングｔｏｆｆよりも早くなる。具体的には、切替スイッチ２１がＯＦＦからＯＮになるタイミングは、切替スイッチ２２がＯＮからＯＦＦになるタイミングよりも早くなる。このように、照明ユニット７ｄが点灯する直前に照明ユニット７ｂ，７ｃが消灯してしまうといった状況を防止することができる。 Next, with reference to FIG. 10B, the relationship between the extinguishing timing of the lighting units 7b and 7c and the lighting timing of the lighting unit 7d when the beam emitted from the lamp unit 3 is switched from the high beam to the low beam will be described. do. In this case, the lighting timing t on the lighting unit 7d transitions from OFF state to the lighting state is earlier than the off timing t off the lighting unit 7b, 7c moves from the lighting state to the OFF state. Specifically, the timing at which the changeover switch 21 changes from OFF to ON is earlier than the timing at which the changeover switch 22 changes from ON to OFF. In this way, it is possible to prevent a situation in which the lighting units 7b and 7c are turned off immediately before the lighting unit 7d is turned on.
　以上、本発明の実施形態について説明をしたが、本発明の技術的範囲が本実施形態の説明によって限定的に解釈されるべきではないのは言うまでもない。本実施形態は単なる一例であって、特許請求の範囲に記載された発明の範囲内において、様々な実施形態の変更が可能であることが当業者によって理解されるところである。本発明の技術的範囲は特許請求の範囲に記載された発明の範囲及びその均等の範囲に基づいて定められるべきである。 Although the embodiments of the present invention have been described above, it goes without saying that the technical scope of the present invention should not be construed in a limited manner by the description of the present embodiments. It is understood by those skilled in the art that the present embodiment is merely an example, and various embodiments can be modified within the scope of the invention described in the claims. The technical scope of the present invention should be determined based on the scope of the invention described in the claims and the equivalent scope thereof.
　例えば、本実施形態では、灯具ユニット３は２つのハイビーム用照明ユニットを備えているが、ハイビーム用照明ユニットの個数は特に限定されるものではない。例えば、灯具ユニット３に設けられるハイビーム用照明ユニットの個数は１つであってもよい。 For example, in the present embodiment, the lamp unit 3 includes two high beam lighting units, but the number of high beam lighting units is not particularly limited. For example, the number of high beam lighting units provided in the lamp unit 3 may be one.
　この点において、灯具ユニット３に設けられたハイビーム用照明ユニットが１つである場合を想定する。例えば、灯具ユニット３には、左右方向において照明ユニット７ａと、照明ユニット７ｂと、照明ユニット７ｄが配置されるものとする。この場合、灯具ユニット３の左右方向におけるレンズユニット４０ａの外縁とレンズユニット４０ｄの外縁との間の距離Ｄは、０ｍｍ＜Ｄ＜７５ｍｍを満たすことが好ましい。距離Ｄが０ｍｍ＜Ｄ＜７５ｍｍを満たすとき、灯具ユニット３がロービームを出射している間において、照明ユニット７ａの点灯と照明ユニット７ｄの点灯によって照明ユニット７ｂの消灯が車両１の外部から視認しづらくなる。 In this respect, it is assumed that the lighting unit 3 is provided with one high beam lighting unit. For example, it is assumed that the lighting unit 7a, the lighting unit 7b, and the lighting unit 7d are arranged in the lamp unit 3 in the left-right direction. In this case, the distance D between the outer edge of the lens unit 40a and the outer edge of the lens unit 40d in the left-right direction of the lamp unit 3 preferably satisfies 0 mm <D <75 mm. When the distance D satisfies 0 mm <D <75 mm, while the lighting unit 3 emits a low beam, the lighting unit 7a is turned on and the lighting unit 7d is turned on so that the lighting unit 7b is turned off from the outside of the vehicle 1. It becomes difficult.
　また、本実施形態の説明では、車両１は四輪自動車として説明されているが、本実施形態の車両は四輪自動車に限定されるものではない。この点において、車両１は、自動二輪車又は自動三輪車であってもよい。 Further, in the description of the present embodiment, the vehicle 1 is described as a four-wheeled vehicle, but the vehicle of the present embodiment is not limited to the four-wheeled vehicle. In this respect, the vehicle 1 may be a motorcycle or a motorcycle.
　また、本実施形態では、照明ユニット７ｄは、斜めカットオフラインＬ２を有するロービーム用配光パターンＰ２を出射するように構成されているが、ロービーム用配光パターンＰ２のカットオフラインは水平カットオフラインであってもよい。この点において、車両１が自動二輪車又は自動三輪車である場合に、ロービーム用配光パターンＰ２のカットオフラインが水平カットオフラインとなる。このように、ロービーム用配光パターンＰ２が水平カットオフラインを有することで、灯具ユニット３は、自動二輪車用又は自動三輪車用のロービームを出射することができる。 Further, in the present embodiment, the lighting unit 7d is configured to emit the low beam light distribution pattern P2 having the oblique cut-off line L2, but the cut-off line of the low beam light distribution pattern P2 is the horizontal cut-off line. You may. In this respect, when the vehicle 1 is a motorcycle or a motorcycle, the cut-off line of the low beam light distribution pattern P2 is a horizontal cut-off line. As described above, when the low beam light distribution pattern P2 has a horizontal cut-off line, the lamp unit 3 can emit a low beam for a motorcycle or a motorcycle.
　本出願は、２０２０年２月１８日に出願された日本国特許出願（特願２０２０－０２５１７６号）に開示された内容を適宜援用する。 This application appropriately incorporates the contents disclosed in the Japanese patent application (Japanese Patent Application No. 2020-025176) filed on February 18, 2020.

Claims (10)

  1. 　第１カットオフラインを有する第１ロービーム用配光パターンを出射するように構成された第１ロービーム用照明ユニットと、
    　第２カットオフラインを有する第２ロービーム用配光パターンを出射するように構成された第２ロービーム用照明ユニットと、
    　前記第１ロービーム用照明ユニットと前記第２ロービーム用照明ユニットとの間に配置され、ハイビーム用配光パターンを出射するように構成されたハイビーム用照明ユニットと、を備え、
    　前記第１ロービーム用照明ユニットと、前記第２ロービーム用照明ユニットと、前記ハイビーム用照明ユニットは、第１の方向において並んで配置される、灯具ユニット。     A first low beam lighting unit configured to emit a first low beam light distribution pattern having a first cut offline,
    A second low beam lighting unit configured to emit a second low beam light distribution pattern having a second cut-off line,
    A high beam lighting unit arranged between the first low beam lighting unit and the second low beam lighting unit and configured to emit a high beam light distribution pattern is provided.
    The lighting unit in which the first low beam lighting unit, the second low beam lighting unit, and the high beam lighting unit are arranged side by side in the first direction.
  2. 　前記第１ロービーム用照明ユニットは、
    　光を出射する第１発光素子と、
    　前記第１発光素子に対向すると共に、前記第１発光素子から出射された光を出射することで前記第１ロービーム用配光パターンを形成するように構成された第１レンズユニットと、を備え、
    　前記第２ロービーム用照明ユニットは、
    　光を出射する第２発光素子と、
    　前記第２発光素子に対向すると共に、前記第２発光素子から出射された光を出射することで前記第２ロービーム用配光パターンを形成するように構成された第２レンズユニットと、を備え、
    　前記ハイビーム用照明ユニットは、
    　光を出射する第３発光素子と、
    　前記第３発光素子に対向すると共に、前記第３発光素子から出射された光を出射することで前記ハイビーム用配光パターンを形成するように構成された第３レンズユニットと、を備え、
    　前記第３発光素子は、前記第１の方向において前記第１発光素子と前記第２発光素子との間に配置され、
    　前記第３レンズユニットは、前記第１の方向において前記第１レンズユニットと前記第２レンズユニットとの間に配置される、請求項１に記載の灯具ユニット。     The first low beam lighting unit is
    The first light emitting element that emits light and
    A first lens unit configured to face the first light emitting element and to form a light distribution pattern for the first low beam by emitting light emitted from the first light emitting element.
    The second low beam lighting unit is
    The second light emitting element that emits light and
    It includes a second lens unit that faces the second light emitting element and is configured to form a light distribution pattern for the second low beam by emitting light emitted from the second light emitting element.
    The high beam lighting unit is
    A third light emitting element that emits light,
    A third lens unit configured to face the third light emitting element and to form the high beam light distribution pattern by emitting light emitted from the third light emitting element is provided.
    The third light emitting element is arranged between the first light emitting element and the second light emitting element in the first direction.
    The lamp unit according to claim 1, wherein the third lens unit is arranged between the first lens unit and the second lens unit in the first direction.
  3. 　前記第１レンズユニットの出射面と、前記第２レンズユニットの出射面と、前記第３レンズユニットの出射面は、同一平面上に位置する、請求項２に記載の灯具ユニット。 The lamp unit according to claim 2, wherein the exit surface of the first lens unit, the exit surface of the second lens unit, and the exit surface of the third lens unit are located on the same plane.
  4. 　前記第１発光素子と、前記第２発光素子と、前記第３発光素子は、同一の回路基板上に配置され、
    　前記第１レンズユニットと、前記第２レンズユニットと、前記第３レンズユニットは、一体的に形成されている、請求項２又は３に記載の灯具ユニット。     The first light emitting element, the second light emitting element, and the third light emitting element are arranged on the same circuit board.
    The lamp unit according to claim 2 or 3, wherein the first lens unit, the second lens unit, and the third lens unit are integrally formed.
  5. 　前記第１の方向における前記第１レンズユニットの外縁と前記第２レンズユニットの外縁との間の距離Ｄは、０ｍｍ＜Ｄ＜７５ｍｍを満たす、請求項２から４のうちいずれか一項に記載の灯具ユニット。 The method according to any one of claims 2 to 4, wherein the distance D between the outer edge of the first lens unit and the outer edge of the second lens unit in the first direction satisfies 0 mm <D <75 mm. Lighting unit.
  6. 　前記第１レンズユニットは、
    　前記第１発光素子に対向すると共に、前記第１発光素子から出射された光の一部を前記車両の外部に向けて出射させるように構成された中央光透過部と、
    　前記中央光透過部を囲むように設けられ、前記第１発光素子から出射された光の他の一部を前記車両の外部に向けて全反射させるように構成された周辺光透過部と、を有し、
    　前記周辺光透過部は、その周方向に沿って複数の反射領域に区分されている、
    請求項２から５のうちいずれか一項に記載の灯具ユニット。     The first lens unit is
    A central light transmitting portion configured to face the first light emitting element and to emit a part of the light emitted from the first light emitting element toward the outside of the vehicle.
    A peripheral light transmitting portion provided so as to surround the central light transmitting portion and configured to totally reflect the other part of the light emitted from the first light emitting element toward the outside of the vehicle. Have and
    The peripheral light transmitting portion is divided into a plurality of reflection regions along the circumferential direction thereof.
    The lamp unit according to any one of claims 2 to 5.
  7. 　前記灯具ユニットは、前記車両の左前側に配置された左側車両用灯具に搭載されると共に、前記車両の右前側に配置された右側車両用灯具に搭載される、請求項１から６のうちいずれか一項に記載の灯具ユニット。 Any of claims 1 to 6, wherein the lamp unit is mounted on a left vehicle lamp arranged on the left front side of the vehicle and is mounted on a right vehicle lamp arranged on the right front side of the vehicle. The lamp unit described in item 1.
  8. 　前記ハイビーム用照明ユニットが点灯している状態で、前記第１ロービーム用照明ユニットは点灯している一方、前記第２ロービーム用照明ユニットは消灯している、請求項１から７のうちいずれか一項に記載の灯具ユニット。 Any one of claims 1 to 7, wherein the first low beam lighting unit is lit while the second low beam lighting unit is turned off while the high beam lighting unit is lit. Lighting unit described in the section.
  9. 　前記ハイビーム用照明ユニットが点灯している状態で、前記第１ロービーム用照明ユニットは点灯している一方、前記第２ロービーム用照明ユニットは消灯し、
    　前記ハイビーム用照明ユニットが消灯状態から点灯状態に移行するタイミングは、前記第２ロービーム用照明ユニットが点灯状態から消灯状態に移行するタイミングよりも早く、
    　前記第２ロービーム用照明ユニットが点灯している状態で、前記第１ロービーム用照明ユニットは点灯している一方、前記ハイビーム用照明ユニットは消灯し、
    　前記第２ロービーム用照明ユニットが消灯状態から点灯状態に移行するタイミングは、前記ハイビーム用照明ユニットが点灯状態から消灯状態に移行するタイミングよりも早い、請求項１から８のうちいずれか一項に記載の灯具ユニット。     While the high beam lighting unit is lit, the first low beam lighting unit is lit, while the second low beam lighting unit is turned off.
    The timing at which the high beam lighting unit shifts from the off state to the lit state is earlier than the timing at which the second low beam lighting unit shifts from the lit state to the lit state.
    In the state where the second low beam lighting unit is lit, the first low beam lighting unit is lit, while the high beam lighting unit is turned off.
    The timing at which the second low beam lighting unit shifts from the off state to the lit state is earlier than the timing at which the high beam lighting unit shifts from the lit state to the lit state, according to any one of claims 1 to 8. The listed lighting unit.
  10. 　請求項１から９のうちいずれか一項に記載の灯具ユニットを搭載した車両用灯具。 A vehicle lamp equipped with the lamp unit according to any one of claims 1 to 9.
PCT/JP2021/001906 2020-02-18 2021-01-20 Light fixture unit and light fixture for vehicle WO2021166533A1 (en)

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