WO2024128289A1 - Light-source unit and vehicle lamp - Google Patents

Light-source unit and vehicle lamp Download PDF

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Publication number
WO2024128289A1
WO2024128289A1 PCT/JP2023/044892 JP2023044892W WO2024128289A1 WO 2024128289 A1 WO2024128289 A1 WO 2024128289A1 JP 2023044892 W JP2023044892 W JP 2023044892W WO 2024128289 A1 WO2024128289 A1 WO 2024128289A1
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WO
WIPO (PCT)
Prior art keywords
light source
light
source unit
shade
wall portion
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Application number
PCT/JP2023/044892
Other languages
French (fr)
Japanese (ja)
Inventor
浩一郎 阿野
琢也 神田
Original Assignee
スタンレー電気株式会社
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Filing date
Publication date
Application filed by スタンレー電気株式会社 filed Critical スタンレー電気株式会社
Publication of WO2024128289A1 publication Critical patent/WO2024128289A1/en

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  • the present invention relates to a light source unit and a vehicle lamp.
  • This application claims priority based on Japanese Patent Application No. 2022-200884, filed on December 16, 2022, the contents of which are incorporated herein by reference.
  • LEDs have the advantage of having a long life and low power consumption.
  • Patent Document 1 proposes a light source unit in which a circuit board on which an LED and a drive circuit for driving the LED are mounted is attached to a heat sink, and the heat sink is attached integrally with a connector part electrically connected to the circuit board, and a coupler-equipped socket is attached detachably to a mounting hole provided on the back side of the lamp body.
  • vehicle lighting fixtures such as combination lamps (rear combination lamps, front combination lamps, etc.)
  • multiple light sources corresponding to different lamp functions may be arranged within the housing of the lighting fixture.
  • a light source that functions as a stop lamp and another light source that functions as a tail lamp are arranged within the housing.
  • each would be attached to a separate socket (LED socket).
  • LED socket When arranging such multiple light sources within a housing, it is conceivable that each would be attached to a separate socket (LED socket). In other words, multiple sockets each equipped with a light source would be arranged side by side within the housing.
  • lamps with this type of structure have issues in terms of saving space.
  • wiring to supply power to each light source must be installed according to the number of light sources (sockets). This can lead to a complicated wiring structure within the lighting fixture.
  • Patent Document 1 a light source unit in which different types of light sources are mounted on a single board is disclosed in Patent Document 1 below.
  • the light source unit described in Patent Document 1 has six light-emitting element groups arranged in two rows and three columns, and one light-emitting element mounted on the same substrate as the light-emitting element groups.
  • the vehicle lamp described in Patent Document 1 also includes a first light guide facing the group of six light-emitting elements of the light source unit, and a second light guide facing one light-emitting element.
  • the light source unit (vehicle lamp) described in Patent Document 1 can solve the above problems that can occur with the light source unit (vehicle lamp) that has multiple sockets for each light source.
  • first light source the light emitted from one light source (first light source) will leak onto the light guide side facing the other light source (second light source).
  • the light emitted from the first light source is guided to a light guide facing the second light source, and there is a risk that the second light-emitting area (the second inner lens provided to emit light from the second light source) will emit light, rather than the first light-emitting area of the lamp (for example, the first inner lens provided to emit light from the first light source).
  • the second light-emitting area the second inner lens provided to emit light from the second light source
  • Patent Document 1 does not disclose or suggest these problems or the means for solving them.
  • An aspect of the present invention provides a light source unit that allows light emitted from adjacent light sources to be appropriately blocked between them, as well as a suitable vehicle lamp that uses such a light source unit.
  • An aspect of the present invention provides the following configuration.
  • the socket body has a cylindrical wall portion protruding from a front side thereof so as to surround the periphery of the first light source and the second light source,
  • a pair of fixing structures for fixing both ends of the shade to the cylindrical wall portion The light source unit described in [2], characterized in that the fixing structure includes an engaging portion provided on either the shade or the tubular wall portion, and a locking portion provided on the other of the shade or the tubular wall portion and locks to the engaging portion.
  • the fixing structure includes an engaging portion provided on either the shade or the tubular wall portion, and a locking portion provided on the other of the shade or the tubular wall portion and locks to the engaging portion.
  • the locked portion or the locking portion is provided on the outer circumferential side of the cylindrical wall portion.
  • the fixing structure includes a mating recess provided on one of the shade and the cylindrical wall portion, and a mating convex portion provided on the other of the shade and mating with the mating recess.
  • the light source unit according to any one of [1] to [8] above, The light source unit is inserted into the inside of the light body through a mounting hole provided on the rear side of the light body, and is removably attached around the mounting hole, The first light source emits a first light toward an incident surface of the first light guiding lens, The second light source emits a second light toward an incident surface of the second light guiding lens,
  • the vehicle lamp is characterized in that the shade blocks the first light traveling from the first light source toward the incident surface of the second light guide lens, and blocks the second light traveling from the second light source toward the incident surface of the first light guide lens.
  • the vehicular lamp according to [9] characterized in that, when the light source unit is attached to the lamp body, the first light source and the second light source are arranged side by side in the vertical direction.
  • FIG. 1 is a cross-sectional view showing a configuration of a vehicle lamp including a light source unit according to an embodiment of the present invention.
  • 2 is a perspective view showing the configuration of a light source unit, a first light guiding lens, and a second light guiding lens shown in FIG. 1 .
  • FIG. 2 is a perspective view showing a configuration of a light source unit shown in FIG. 1 .
  • FIG. 2 is a front view showing the configuration of the light source unit shown in FIG. 1 .
  • 5 is a vertical cross-sectional view of the light source unit taken along line VV shown in FIG. 4.
  • 5 is a cross-sectional view of the light source unit taken along line VIA-VIA shown in FIG. 4.
  • FIG. 7 is an enlarged cross-sectional view of the boxed portion VIB shown in FIG. 6A.
  • FIG. 2 is a side view showing the configuration of the light source unit shown in FIG. 1 .
  • FIG. 2 is a front view showing a state in which the shade of the light source unit shown in FIG. 1 is removed.
  • FIG. 8B is an enlarged front view of boxed portion VIIIB shown in FIG. 8A.
  • FIG. 8B is an enlarged front view of boxed portion VIIIC shown in FIG. 8A.
  • 2 is a perspective view showing a configuration of a shade included in the light source unit shown in FIG. 1 .
  • FIG. 10 is a rear view showing the configuration of the shade shown in FIG. 9 .
  • FIG. 10 is a rear view showing the configuration of the shade shown in FIG. 9 .
  • FIG. 10B is an enlarged rear view of the enclosed area XB shown in FIG. 10A.
  • FIG. 10B is an enlarged rear view of the enclosed portion XC shown in FIG. 10A.
  • FIG. 2 is a cross-sectional view for explaining a state when the vehicular lamp shown in FIG. 1 is turned on.
  • 4 is a cross-sectional view showing a modified example of the shade of the vehicle lamp shown in FIG. 1.
  • 4 is a cross-sectional view showing a modified example of the shade of the vehicle lamp shown in FIG. 1. 1.
  • FIG. 4 is a front view showing a modified example of the fixing structure of the shade in the vehicle lamp shown in FIG.
  • a vehicle lamp 100 equipped with a light source unit 1 as shown in Figures 1 to 14 will be described.
  • FIG. 1 is a cross-sectional view showing the configuration of a vehicle lamp 100 including a light source unit 1.
  • FIG. 2 is a perspective view showing the configuration of the light source unit 1, the first light guide lens 2A, and the second light guide lens 2B.
  • FIG. 3 is a perspective view showing the configuration of the light source unit 1.
  • FIG. 4 is a front view showing the configuration of the light source unit 1.
  • FIG. 5 is a vertical cross-sectional view of the light source unit 1 taken along line V-V shown in FIG. 4.
  • FIG. 6A is a horizontal cross-sectional view of the light source unit 1 taken along line B-B shown in FIG. 4.
  • FIG. 6B is a cross-sectional view showing an enlargement of the enclosed portion VIB.
  • FIG. 7 is a side view showing the configuration of the light source unit 1.
  • FIG. 8A is a front view showing the state in which the shade 8 of the light source unit 1 has been removed.
  • FIG. 8B is a front view showing an enlargement of the enclosed portion VIIIB shown in FIG. 8A.
  • FIG. 8C is a front view showing an enlargement of the enclosed portion VIIIC shown in FIG. 8A.
  • FIG. 9 is a perspective view showing the configuration of the shade 8 included in the light source unit 1.
  • FIG. 10A is a rear view showing the configuration of the shade 8.
  • 10B is an enlarged rear view of the enclosed portion XB shown in FIG. 10A.
  • FIG. 10C is an enlarged rear view of the enclosed portion XC shown in FIG. 10A.
  • FIG. 10A is a rear view showing the configuration of the shade 8.
  • FIG. 11 is a cross-sectional view for explaining the state of the vehicle lamp 100 when it is turned on.
  • FIG. 12A and FIG. 12B are cross-sectional views showing modified examples of the shade 8 of the vehicle lamp 100.
  • FIG. 13 is a front view showing a modified example of the fixing structure 20 of the shade 8 in the vehicle lamp 100.
  • an XYZ Cartesian coordinate system is set, with the X-axis direction representing the front-to-rear direction (length direction) of the light source unit 1 (vehicle lamp 100), the Y-axis direction representing the left-to-right direction (width direction) of the light source unit 1 (vehicle lamp 100), and the Z-axis direction representing the up-down direction (height direction) of the light source unit 1 (vehicle lamp 100).
  • the vehicle lamp 100 of this embodiment is part of a rear combination lamp mounted on both corners of the rear end of a vehicle (not shown) (the corners on the left rear end in this embodiment), and functions as a tail lamp TLL that emits red light, and as a brake lamp BRL that emits red light brighter than the tail lamp TLL.
  • the terms “front,” “rear,” “left,” “right,” “upper,” and “lower” refer to the respective directions when the vehicle lamp 100 (light source unit 1) is viewed from the front (rear of the vehicle). Therefore, when the vehicle is viewed from the front (front of the vehicle), the respective directions are the reverse of front, rear, left, and right.
  • this vehicle lamp 100 is configured to house the light source unit 1 of this embodiment, rod-shaped first light guide lens 2A and second light guide lens 2B that serve as inner lenses, and first extension 104A and second extension 104B inside a lamp body 103 that is composed of a housing 101 that is open at the front (front face) and a transparent outer lens (cover lens) 102 that covers the opening of this housing 101.
  • the lamp 103 also has a curved shape from the center toward both ends in the vehicle width direction to match the slanted shape given to both corners on the rear end side of the vehicle. Note that the shape of the lamp 103 is not limited to this curved shape, and can be changed as appropriate to match the design of the vehicle, etc.
  • the light source unit 1 of this embodiment is a socket with a replaceable coupler, and can be detachably attached via a ring-shaped packing (O-ring) 105 around the mounting hole 101a provided on the rear side of the housing 101 (lamp body 103), with its front side inserted into the inside of the lamp body 103 through the mounting hole 101a.
  • O-ring ring-shaped packing
  • the light source unit 1 includes a first light source 3A and a second light source 3B adjacent to each other, a circuit board 4 on which the first light source 3A and the second light source 3B are mounted, a heat sink 5 thermally connected to the circuit board 4, a socket body 7 provided with a connector portion 6 electrically connected to the circuit board 4, and a shade 8 positioned on the front side of the first light source 3A and the second light source 3B and arranged to cross between the first light source 3A and the second light source 3B.
  • the first light source 3A and the second light source 3B each have at least one or more (four in this embodiment) light-emitting elements 9 that emit red light (hereinafter referred to as "light") L1 and L2, respectively.
  • the light-emitting element 9 is, for example, an LED, and is mounted on the surface of the circuit board 4 on which a drive circuit (not shown) for driving the LED is provided, and emits light radially toward the front side.
  • a drive circuit (not shown) for driving the LED is provided, and emits light radially toward the front side.
  • multiple light-emitting elements 9 are provided on the same surface of the same circuit board 4, and emit light L1, L2 radially in the same direction.
  • the first light source 3A and the second light source 3B are arranged side by side in one direction (the up-down direction in this embodiment) on the surface of the circuit board 4, sandwiching the central axis of the light source unit 1.
  • the light source unit 1 has a frame body 10 that surrounds the front side of the multiple light-emitting elements 9 that make up each light source 3A, 3B, and a sealing material 11 embedded inside the frame body 10.
  • the frame 10 is made of, for example, a cylindrical white resin, and is attached to the surface of the circuit board 4 while surrounding each of the light sources 3A and 3B.
  • the sealing material 11 is embedded inside the frame 10 and seals each of the light sources 3A and 3B.
  • each light source 3A, 3B When multiple light-emitting elements 9 are regarded as one light source 3A, 3B, the optical axes L1, L2 emitted from each light source 3A, 3B are assumed to coincide with the central axis of the multiple light-emitting elements 9.
  • the light source unit 1 has a structure in which the heat sink 5 and the socket body 7 are integrated by insert molding the heat sink 5 and the socket body 7.
  • the light source unit 1 may have a structure in which the heat sink 5 and the socket body 7, which are formed separately, are integrated by screwing or the like. Furthermore, the heat sink 5 and the socket body 7 may be integrally formed using the same material.
  • the heat sink 5 is made of a metal material with high thermal conductivity, such as aluminum (Al), iron (Fe), or copper (Cu).
  • the socket body 7 is made of an insulating resin material, such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or polyamide (PA).
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • PA polyamide
  • the socket body 7 may also be made of a resin to which a filler with high thermal conductivity, such as carbon, ceramic, or metal, has been added.
  • the heat sink 5 has a roughly disk-shaped base portion 5a, a protrusion portion 5b that protrudes from roughly the center of the front (front) side of the base portion 5a and has a roughly square cross section, and a number of heat dissipation fins 5c that protrude in a vertical plate shape and are aligned in the width direction from the back (rear) side of the base portion 5a.
  • the socket body 7 has a substantially disk-shaped base portion 7a, a cylindrical wall portion 7b with a substantially circular cross section that protrudes forward from approximately the center of the front side of the base portion 7a, and a through hole 7c with a substantially square cross section that penetrates the inside of the cylindrical wall portion 7b and the base portion 9a in the front-rear direction.
  • the gasket 105 is attached in a state where it penetrates the cylindrical wall portion 7b and is in contact with the base portion 7a.
  • the outer peripheral surface of the tube wall portion 7b is provided with multiple claw portions 7d (two, one above and one below, in this embodiment) and multiple protrusions 7e (two, one on the left and one on the right, in this embodiment) lined up in the circumferential direction.
  • the claw portion 7d is inserted into the inside of the light body 103 through a notch (not shown) provided around the mounting hole 101a of the housing 101, and then is engaged with a locking receiving portion (not shown) on the housing 101 side by rotating the socket body 7 around the central axis of the mounting hole 101a.
  • the protrusion 7e is a part that prevents the socket body 7 from coming out of the mounting hole 101a of the housing 101 by rotating the socket body 7 around the central axis of the mounting hole 101a after it is inserted into the inside of the light body 103 through the notch in the mounting hole 101a.
  • the difference in shape of the protrusion 9e also serves to prevent incorrect installation into the mounting hole 101a of a socket with a coupler of different specifications.
  • the socket body 7 has a through hole 7f that is located below the through hole 7c and penetrates the inside of the tube wall portion 7b and the base portion 7a in the front-rear direction, and a roughly rectangular tubular fitting portion 7g that protrudes rearward from the periphery of the through hole 7f on the rear side of the base portion 7a.
  • the connector portion 6 has multiple lead terminals 12. Each lead terminal 12 is attached integrally to the main body portion 6a of the connector portion 6, penetrating the main body portion 6a in the front-rear direction.
  • the connector portion 6 is constructed by fitting the main body portion 6a inside the through hole 7f so that the lead terminal 12 is positioned inside the mating portion 7g.
  • the multiple lead terminals 12 are fixed to the land portions around each hole 4a by soldering while passing through the multiple holes 4a that penetrate the circuit board 4 in the thickness direction. This electrically connects the multiple lead terminals 12 to the circuit board 4.
  • the heat sink 5 and the socket body 7 are integrated with the protrusion 5b fitted into the through hole 7c and the base parts 5a, 5a butted together.
  • a seal member 13 is disposed between the tip of the protrusion 5b and the through hole 7c to hermetically seal the space between them.
  • the inner front surface of the tube wall portion 7b is provided with a circuit board attachment portion 14.
  • the circuit board attachment portion 14 is formed by a flat surface that is continuous with the tip surface of the protrusion portion 5b exposed from the through hole 7c and the inner front surface of the tube wall portion 7b.
  • the circuit board 4 is attached to this board mounting portion 14 via a thermally conductive adhesive 15. As a result, the circuit board 4 is thermally connected to the heat sink 5 via the thermally conductive adhesive 15 and the protrusion 5b that constitutes part of the board mounting portion 14.
  • the heat sink 5 dissipates heat generated by each of the light sources 3A and 3B to the outside via the board mounting portion 14 to which the circuit board 4 is attached. Meanwhile, in this state, the circuit board 4 is electrically insulated from the heat sink 5.
  • the shade 8 is made of a colored (e.g. black) light-shielding material and has a substantially flat light-shielding portion 8a and a pair of fixing portions 8b located at both ends of the light-shielding portion 8a.
  • the pair of fixing parts 8b have a groove 81 into which the tubular wall part 7b of the socket body 7 is fitted, and an elastic piece 82 that extends rearward from the outside of this groove 81.
  • the elastic piece 82 is arranged so that it can elastically deform in the radial direction of the tube wall portion 7b, with the bottom of the groove portion 81 as a fulcrum.
  • the light source unit 1 of this embodiment has a pair of fixing structures 20 for fixing the pair of fixing parts 8b to the tube wall part 7b.
  • the pair of fixing structures 20 has a pair of engaging portions 21 provided on either the fixing portion 8b or the tube wall portion 7b (in this embodiment, the fixing portion 8b), and a pair of engaging portions 22 provided on the other (in this embodiment, the tube wall portion 7b).
  • the pair of engaging portions 21 are formed by engaging holes provided in the elastic pieces 82 of the pair of fixing portions 8b.
  • the pair of locking portions 22 are formed by locking claws provided on the front side of the protrusions 7e located on both sides in the width direction on the outer peripheral surface of the tube wall portion 7b.
  • a pair of locking portions (locking claws) 22 are locked to a pair of locked portions (locking holes) 21, so that a pair of fixing portions 8b (elastic pieces 82) can be fixed to the outer periphery of the tube wall portion 7b.
  • the shade 8 is detachably attached to the tube wall portion 7b (socket body 7).
  • the light-shielding portion 8a of the shade 8 is positioned on the front side of the first light source 3A and the second light source 3B, and is disposed so as to cross between the first light source 3A and the second light source 3B.
  • the pair of fixing parts 8b of the shade 8 are fixed to the protruding part 7e side of the tube wall part 7b, so that it is possible to properly fix it to the outer periphery side of the tube wall part 7b while maintaining the locking state of the pair of locking parts (locking claws) 22 with the pair of locked parts (locking holes) 21 without being affected by the stress applied to the claw parts 7d when it is attached around the mounting hole 101a.
  • the pair of fixing parts 8b of the shade 8 are located on the front side of the two protrusions 7e and inside the outer circumferential surface of the protrusions 7e. This makes it possible to attach the socket body 7 around the mounting hole 101a of the housing 101 without interference from the shade 8.
  • the interlocking portion 21 is provided on the fixed portion 8b side, and the interlocking portion 22 is provided on the outer periphery of the tubular wall portion 7b.
  • the opposite configuration may also be used, that is, the interlocking portion 21 is provided on the outer periphery of the tubular wall portion 7b, and the interlocking portion 22 is provided on the fixed portion 8b side.
  • the locking structure between the locked portion 21 and the locking portion 22 is not necessarily limited to the structure in which the locking claws are locked into the locking holes described above, and the locking structure can be modified as appropriate.
  • the pair of fixing structures 20 has a pair of mating recesses 23a, 23b provided on either the shade 8 or the tube wall portion 7b (tube wall portion 7b in this embodiment), and mating protrusions 24a, 24b provided on the other (shade 8 in this embodiment).
  • the pair of fitting recesses 23a, 23b are located on both sides in the width direction on the outer peripheral surface of the tube wall portion 7b, and are configured as arc-shaped recesses when viewed from the front. Furthermore, one fitting recess 23b is larger than the other fitting recess 23a.
  • the pair of mating protrusions 24a, 24b are located on both sides in the width direction of the light-shielding portion 8a on the side facing the first light source 3A and the second light source 3B, and are formed of arc-shaped protrusions when viewed from the front.
  • one mating protrusion 24b is larger than the other mating protrusion 24a.
  • one mating protrusion 24a is fitted into one mating recess 23a, and the other mating protrusion 24b is fitted into the other mating recess 23b, preventing the shade 8 from rotating around the central axis of the socket body 7 relative to the tube wall portion 7b.
  • fitting recess 23a and fitting protrusion 24a on one side and the fitting recess 23b and fitting protrusion 24b on the other side have asymmetric shapes between one side and the other side of the pair of fixing structures 20. This prevents the shade 8 from being attached in the opposite direction to the tube wall portion 7b.
  • the fitting recesses 23a, 23b are provided on the inner periphery of the above-mentioned tube wall portion 7b, and the fitting protrusions 24a, 24b are provided on the shade 8 side.
  • the opposite configuration may also be used, that is, the fitting recesses 23a, 23b are provided on the shade 8 side, and the fitting protrusions 24a, 24b are provided on the inner periphery of the tube wall portion 7b.
  • fitting structure between the fitting recesses 23a, 23b and the fitting protrusions 24a, 24b is not limited to the arc shape described above, and the shape can be modified as appropriate.
  • the first light-guiding lens 2A and the second light-guiding lens 2B are made of a long, rod-shaped light-transmitting material such as transparent resin such as polycarbonate or acrylic, or glass.
  • the first light guide lens 2A and the second light guide lens 2B extend in the vehicle width direction, and have a curved shape that curves in a direction that is more recessed on the outside than on the inside in the vehicle width direction, in accordance with the slant shape given to both corners on the rear end side of the vehicle.
  • the shapes of the first light-guiding lens 2A and the second light-guiding lens 2B are not limited to this curved shape, and can be changed as appropriate to suit the design of the vehicle, etc.
  • the first light guide lens 2A receives the first light L1 emitted from the first light source 3A through an entrance surface 25a provided on the base end side and guides the first light L1 toward the tip side, while the first light L1 reflected by multiple reflection cuts 26a provided on the back side is emitted from an exit surface 27a provided on the front side.
  • the second light guide lens 2B receives the second light L2 emitted from the second light source 3B through the entrance surface 25b provided on the base end side and guides the second light L2 toward the tip side, while the second light L2 reflected by the multiple reflection cuts 26b provided on the back side is emitted from the exit surface 27b provided on the front side.
  • Each of the incident surfaces 25a, 25b is formed of a flat surface (plane) that faces each of the light sources 3A, 3B of each of the light guide lenses 2A, 2B.
  • Each reflection cut 26a, 26b is not particularly limited in shape, size, number, etc., as long as it reflects light L1, L2 incident on the back side of each light-guiding lens 2A, 2B at an angle that causes the light L1, L2 to exit (be transmitted) from the front side of each light-guiding lens 2A, 2B to the outside.
  • each reflection cut 26a, 26b is configured by, for example, cutting out the center of the back side of each light guide lens 2A, 2B in a vertical direction (up-down direction in this embodiment) perpendicular to the axial direction of each light guide lens 2A, 2B, so that grooves with a roughly triangular cross section are aligned in the axial direction of each light guide lens 2A, 2B (left-right direction in this embodiment).
  • each reflection cut 26a, 26b is provided on the back side of each light guide lens 2A, 2B, corresponding to the axial length range of each emission surface 27a, 27b.
  • the intervals between adjacent grooves forming each of the reflective cuts 26a, 26b may be gradually narrowed from the base end side to the tip end side of each of the light guide lenses 2A, 2B, or the depth of the grooves forming each of the reflective cuts 26a, 26b may be gradually deepened.
  • a pair of reflection surfaces that reflect the light L1, L2 guided inside each light-guiding lens 2A, 2B may be provided extending in the axial direction of each light-guiding lens 2A, 2B.
  • Each of the emission surfaces 27a, 27b extends in the axial direction on the front side of each of the light-guiding lenses 2A, 2B, and is configured as a convex curved surface that is curved in an arc shape in a cross section (vertical cross section) perpendicular to the axial direction.
  • each of the emission surfaces 27a, 27b may be provided with a plurality of diffusion cuts (not shown) for diffusing the light L1, L2 emitted from these emission surfaces 27a, 27b toward the outside.
  • diffusion cuts include lens cuts called flute cuts or fisheye cuts, and uneven structures formed by applying knurling or embossing.
  • each exit surface 27a, 27b by adjusting the shape of the diffusion cut, it is possible to control the degree of diffusion of the light L1, L2 emitted from each exit surface 27a, 27b. Furthermore, a configuration in which a separate diffusion lens is placed on the front side of each exit surface 27a, 27b may be used.
  • the first extension 104A and the second extension 104B are made of a colored (e.g., black) light-shielding material that covers the front side of the first light-guiding lens 2A and the second light-guiding lens 2B.
  • a colored (e.g., black) light-shielding material that covers the front side of the first light-guiding lens 2A and the second light-guiding lens 2B.
  • the first extension 104A has an opening 28a that corresponds to the exit surface 27a of the first light-guiding lens 2A, and blocks the first light L1 that is emitted from any surface other than the exit surface 27a of the first light-guiding lens 2A.
  • the second extension 104B has an opening 28b corresponding to the exit surface 27b of the second light-guiding lens 2B, and blocks the second light L2 emitted from any surface other than the exit surface 27b of the first light-guiding lens 2A.
  • the vehicle lamp 100 of this embodiment in addition to the light source unit 1 and the light guide lenses 2A and 2B that serve as the inner lenses described above, it is possible to combine it with other components, such as another inner lens or a reflector.
  • the area (opening 28a) corresponding to the exit surface 27a of the first light guide lens 2A can emit red light as the above-mentioned tail lamp TLL.
  • the area (opening 28b) corresponding to the exit surface 27b of the second light guide lens 2B as the brake lamp BRL can emit a red light brighter than the tail lamp TLL.
  • a first light L1 is emitted from the first light source 3A toward the incident surface 25a of the first light guide lens 2A
  • a second light L2 is emitted from the second light source 3B toward the incident surface 25b of the second light guide lens 2B.
  • the shade 8 blocks the first light L1 traveling from the first light source 3A toward the incident surface 25b of the second light guide lens 2B with the light shielding portion 8a, while blocking the second light L2 traveling from the second light source 3B toward the incident surface 25a of the first light guide lens 2A with the light shielding portion 8a.
  • the light source unit 1 of this embodiment it is possible to prevent a portion of the first light L1 emitted from the first light source 3A from entering the incident surface 25b of the second light-guiding lens 2B, and to prevent a portion of the second light L2 emitted from the second light source 3B from entering the incident surface 25a of the first light-guiding lens 2A.
  • the light-shielding portion 8a has a shape in which, in a cross section (vertical cross section) in the direction connecting the first light source 3A and the second light source 3B (the up-down direction in this embodiment), the dimension b on the opposite side (front side) is larger than the dimension a on the side (rear side) facing the first light source 3A and the second light source 3B.
  • the light-shielding portion 8a is provided with a light-shielding wall 8c that protrudes rearward from the center of the rear side with a width corresponding to the first light source 3A and the second light source 3B.
  • the light-shielding wall 8c has a dimension a that is smaller than the dimension b of the front side of the light-shielding portion 8a.
  • the light-shielding wall 8c is located at a position shifted upward from the center of the light-shielding portion 8a. As a result, the upper dimension c of the back side of the light-shielding portion 8a across the light-shielding wall 8c is smaller than the lower dimension d.
  • the upper dimension c across the light-shielding wall 8c is smaller than the lower dimension d.
  • the upper dimension c across the light-shielding wall 8c and the lower dimension d may be the same, or as shown in FIG. 12B, the upper dimension c across the light-shielding wall 8c may be larger than the lower dimension d.
  • the first light source 3A is configured as a light source for the tail lamp TLL
  • the second light source 3B is configured as a light source for the brake lamp BRL
  • the first light source 3A may be configured as a light source for the brake lamp BRL
  • the second light source 3B may be configured as a light source for the tail lamp TLL.
  • the above-mentioned mating recess 23a and mating protrusion 24a on one side and the mating recess 23b and mating protrusion 24b on the other side have an asymmetrical shape.
  • the mating position between the mating recess 23a and mating protrusion 24a on one side and the mating position between the mating recess 23b and mating protrusion 24b on the other side may be shifted in opposite directions to each other across a horizontal line passing through the central axis of the light source unit 1.
  • the light source unit 1 that emits the above-mentioned tail lamp TLL and brake lamp BRL is exemplified as the vehicle lamp 100 mounted on both corners of the rear end of the vehicle, but the present invention can also be applied to a light source unit that emits a tail lamp and a turn lamp that flashes with orange light or a back lamp that emits white light.
  • the present invention can also be applied to a light source unit that emits white light as a position lamp or daytime running lamp (DRL) and turn signal lamp, as vehicle lighting equipment mounted on both corners of the front end of a vehicle.
  • a light source unit that emits white light as a position lamp or daytime running lamp (DRL) and turn signal lamp, as vehicle lighting equipment mounted on both corners of the front end of a vehicle.
  • DRL daytime running lamp
  • the light source unit can also use other light emitting elements such as laser diodes (LDs).
  • LDs laser diodes
  • the color of the light emitted by the light emitting elements can also be changed as appropriate depending on the application, such as white light, red light, or orange light.
  • the light source unit can also be used, for example, in vehicle interior lighting and accessory lamps.

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Abstract

The present invention comprises a first light source (3A) and a second light source (3B) that are adjacent to each other, a circuit board (4) on which the first light source (3A) and second light source (3B) are mounted, a socket body (7) in which the circuit board (4) is disposed on the front side, and a shade (8) that is positioned on the front side of the first light source (3A) and second light source (3B) and is disposed so as to cross between the first light source (3A) and the second light source (3B).

Description

光源ユニット及び車両用灯具Light source unit and vehicle lamp
　本発明は、光源ユニット及び車両用灯具に関する。
　本願は、２０２２年１２月１６日に出願された日本国特願２０２２－２００８８４号に基づき優先権を主張し、その内容をここに援用する。 The present invention relates to a light source unit and a vehicle lamp.
This application claims priority based on Japanese Patent Application No. 2022-200884, filed on December 16, 2022, the contents of which are incorporated herein by reference.
　近年の車両用灯具では、発光ダイオード（ＬＥＤ）の高輝度化や低コスト化が進むに従って、光源にＬＥＤなどの発光素子を採用した構成が徐々に増えてきている。ＬＥＤは、長寿命で消費電力が少ないといったメリットがある。 In recent years, vehicle lighting fixtures have been gradually adopting light-emitting elements such as LEDs as light sources as the light source has become more common, due to the progress of LEDs becoming brighter and cheaper. LEDs have the advantage of having a long life and low power consumption.
　一方、高温になると発光効率の低下や寿命の短縮化を招くことから、ヒートシンクを用いてＬＥＤが発する熱を外部に効率良く放熱させる必要がある。 On the other hand, high temperatures can lead to a decrease in light-emitting efficiency and a shortened lifespan, so a heat sink is needed to efficiently dissipate the heat generated by the LED to the outside.
　例えば、下記特許文献１には、ＬＥＤと、このＬＥＤを駆動する駆動回路とが実装された回路基板をヒートシンクに取り付けて、このヒートシンクを回路基板と電気的に接続されたコネクタ部と一体に取り付けたカプラー付ソケットを、灯体の背面側に設けられた取付孔に着脱自在に取り付ける光源ユニットが提案されている。 For example, the following Patent Document 1 proposes a light source unit in which a circuit board on which an LED and a drive circuit for driving the LED are mounted is attached to a heat sink, and the heat sink is attached integrally with a connector part electrically connected to the circuit board, and a coupler-equipped socket is attached detachably to a mounting hole provided on the back side of the lamp body.
　また、コンビネーションランプ（リアコンビネーションランプやフロントコンビネーションランプ等）のような車両用灯具において、異なるランプ機能に対応する複数の光源が、灯具のハウジング内に配設される場合がある。 In addition, in vehicle lighting fixtures such as combination lamps (rear combination lamps, front combination lamps, etc.), multiple light sources corresponding to different lamp functions may be arranged within the housing of the lighting fixture.
　例えば、リアコンビネーションランプであれば、ストップランプの機能を果たす光源とテールランプの機能を果たす別の光源が、ハウジング内に配設される。 For example, in the case of a rear combination lamp, a light source that functions as a stop lamp and another light source that functions as a tail lamp are arranged within the housing.
　このような複数の光源をハウジング内に配設する際、それぞれ別々のソケット（ＬＥＤソケット）に装着することが考えられる。換言すれば、各光源を備える複数のソケットが、ハウジング内に並設される。 When arranging such multiple light sources within a housing, it is conceivable that each would be attached to a separate socket (LED socket). In other words, multiple sockets each equipped with a light source would be arranged side by side within the housing.
　しかしながら、この場合、複数のソケットの配置スペースを灯具のハウジング内に設ける必要がある。その結果、このような構造の灯具は、省スペース化の点で課題を有する。 In this case, however, it is necessary to provide space for multiple sockets within the housing of the lamp. As a result, lamps with this type of structure have issues in terms of saving space.
　また、各光源に駆動電力を供給する配線に関しても、光源（ソケット）の数に応じて設ける必要がある。このことから、灯具内の配線構造が複雑化するおそれもある。 In addition, wiring to supply power to each light source must be installed according to the number of light sources (sockets). This can lead to a complicated wiring structure within the lighting fixture.
　ところで、別種の光源を１つの基板に実装する光源ユニットが、下記特許文献１に開示されている。 By the way, a light source unit in which different types of light sources are mounted on a single board is disclosed in Patent Document 1 below.
　より詳しくは、特許文献１に記載の光源ユニットは、２行３列に密集する６つの発光素子群と、この発光素子群と同じ基板に実装される１つの発光素子を備える。 More specifically, the light source unit described in Patent Document 1 has six light-emitting element groups arranged in two rows and three columns, and one light-emitting element mounted on the same substrate as the light-emitting element groups.
　また、特許文献１に記載の車両用灯具は、前記光源ユニットの６つの発光素子群に臨む１本目の導光体と、１つの発光素子に臨む２本目の導光体を備える。 The vehicle lamp described in Patent Document 1 also includes a first light guide facing the group of six light-emitting elements of the light source unit, and a second light guide facing one light-emitting element.
日本国特開２０１６－１９５０９９号公報Japanese Patent Publication No. 2016-195099
　特許文献１に記載の光源ユニット及び車両用灯具によれば、１つの基板に別種の光源が共に実装される。すなわち、異なるランプ機能に対応する複数の光源が、１つのソケットに設けられる。 According to the light source unit and vehicle lamp described in Patent Document 1, different types of light sources are mounted together on one board. In other words, multiple light sources corresponding to different lamp functions are provided in one socket.
　そのため、特許文献１に記載の光源ユニット（車両用灯具）によれば、光源毎に複数のソケットを設ける上記光源ユニット（車両用灯具）で生じ得る上記課題を解決できる。 Therefore, the light source unit (vehicle lamp) described in Patent Document 1 can solve the above problems that can occur with the light source unit (vehicle lamp) that has multiple sockets for each light source.
　しかしながら、１つの基板に実装される別種の光源間の距離が近い場合、一方の光源（第１光源）からの照射光が、他方の光源（第２光源）に臨む導光体側に漏光する可能性ある。 However, if the distance between different types of light sources mounted on one board is short, there is a possibility that the light emitted from one light source (first light source) will leak onto the light guide side facing the other light source (second light source).
　この場合、第１光源からの照射光が、第２光源に臨む導光体に導光され、灯具の第１発光領域（例えば、第１光源からの光を出射するために設けられた第１インナーレンズ）ではなく、第２発光領域（第２光源からの光を出射するために設けられた第２インナーレンズ）が発光するおそれがある。 In this case, the light emitted from the first light source is guided to a light guide facing the second light source, and there is a risk that the second light-emitting area (the second inner lens provided to emit light from the second light source) will emit light, rather than the first light-emitting area of the lamp (for example, the first inner lens provided to emit light from the first light source).
　このような課題や当該課題を解決するための手段は、特許文献１に開示も示唆もされていない。 Patent Document 1 does not disclose or suggest these problems or the means for solving them.
　本発明の態様は、互いに隣り合う光源から出射される光をその間で適切に遮光することを可能とした光源ユニット、並びにそのような光源ユニットを用いて好適な車両用灯具を提供する。 An aspect of the present invention provides a light source unit that allows light emitted from adjacent light sources to be appropriately blocked between them, as well as a suitable vehicle lamp that uses such a light source unit.
　本発明の態様は以下の構成を提供する。
〔１〕　互いに隣り合う第１の光源及び第２の光源と、
　前記第１の光源及び前記第２の光源が実装された回路基板と、
　前記回路基板が正面側に配置されたソケット本体と、
　前記第１の光源及び前記第２の光源の正面側に位置して、前記第１の光源と前記第２の光源との間を横断するように配置されたシェードとを備える光源ユニット。
〔２〕　前記ソケット本体は、その正面側から前記第１の光源及び前記第２の光源の周囲を囲むように突出された筒壁部を有し、
　前記シェードの両端が前記筒壁部に取り付けられていることを特徴とする前記〔１〕に記載の光源ユニット。
〔３〕　前記シェードの両端を前記筒壁部に固定する一対の固定構造を有し、
　前記固定構造は、前記シェードと前記筒壁部との何れか一方に設けられた被係止部と、何れか他方に設けられて、前記被係止部に係止される係止部とを含むことを特徴とする前記〔２〕に記載の光源ユニット。
〔４〕　前記筒壁部の外周側に前記被係止部又は前記係止部が設けられていることを特徴とする前記〔３〕に記載の光源ユニット。
〔５〕　前記固定構造は、前記シェードと前記筒壁部との何れか一方に設けられた嵌合凹部と、何れか他方に設けられて、前記嵌合凹部に嵌合される嵌合凸部とを含むことを特徴とする前記〔３〕に記載の光源ユニット。
〔６〕　前記筒壁部の内周側に前記嵌合凹部又は前記嵌合凸部が設けられていることを特徴とする前記〔５〕に記載の光源ユニット。
〔７〕　前記嵌合凹部及び前記嵌合凸部は、前記一対の固定構造の一方側と他方側との間で非対称な形状を有することを特徴とする前記〔５〕に記載の光源ユニット。
〔８〕　前記シェードは、前記第１の光源と前記第２の光源とを結ぶ方向の断面において、前記第１の光源及び前記第２の光源と向かい合う側の寸法よりも、それとは反対側の寸法が大きくなる形状を有することを特徴とする前記〔１〕に記載の光源ユニット。
〔９〕　灯体と、
　前記灯体の内側に配置された第１の導光レンズ及び第２の導光レンズと、
　前記〔１〕～〔８〕の何れか一項に記載の光源ユニットとを備え、
　前記光源ユニットは、前記灯体の背面側に設けられた取付孔から前記灯体の内側に挿入された状態で、前記取付孔の周囲に着脱自在に取り付けられ、
　前記第１の光源は、前記第１の導光レンズの入射面に向けて第１の光を出射し、
　前記第２の光源は、前記第２の導光レンズの入射面に向けて第２の光を出射し、
　前記シェードは、前記第１の光源から前記第２の導光レンズの入射面に向かう前記第１の光を遮光すると共に、前記第２の光源から前記第１の導光レンズの入射面に向かう前記第２の光を遮光することを特徴とする車両用灯具。
〔１０〕　前記光源ユニットが前記灯体に取り付けられた状態において、前記第１の光源と前記第２の光源とが上下方向に並んで配置されていることを特徴とする前記〔９〕に記載の車両用灯具。 An aspect of the present invention provides the following configuration.
[1] A first light source and a second light source adjacent to each other;
a circuit board on which the first light source and the second light source are mounted;
a socket body having the circuit board disposed on a front side thereof;
a shade positioned on a front side of the first light source and the second light source and arranged to traverse between the first light source and the second light source.
[2] The socket body has a cylindrical wall portion protruding from a front side thereof so as to surround the periphery of the first light source and the second light source,
The light source unit according to claim 1, wherein both ends of the shade are attached to the cylindrical wall portion.
[3] A pair of fixing structures for fixing both ends of the shade to the cylindrical wall portion,
The light source unit described in [2], characterized in that the fixing structure includes an engaging portion provided on either the shade or the tubular wall portion, and a locking portion provided on the other of the shade or the tubular wall portion and locks to the engaging portion.
[4] The light source unit according to [3], wherein the locked portion or the locking portion is provided on the outer circumferential side of the cylindrical wall portion.
[5] The light source unit described in [3], wherein the fixing structure includes a mating recess provided on one of the shade and the cylindrical wall portion, and a mating convex portion provided on the other of the shade and mating with the mating recess.
[6] The light source unit according to [5], wherein the fitting recess or the fitting protrusion is provided on the inner circumferential side of the cylindrical wall portion.
[7] The light source unit according to [5], wherein the fitting recess and the fitting protrusion have asymmetric shapes between one side and the other side of the pair of fixing structures.
[8] The light source unit described in [1], wherein the shade has a shape in which, in a cross section in a direction connecting the first light source and the second light source, the dimension on the opposite side facing the first light source and the second light source is larger than the dimension on the opposite side facing the first light source and the second light source.
[9] A lamp body;
A first light guiding lens and a second light guiding lens arranged inside the light body;
The light source unit according to any one of [1] to [8] above,
The light source unit is inserted into the inside of the light body through a mounting hole provided on the rear side of the light body, and is removably attached around the mounting hole,
The first light source emits a first light toward an incident surface of the first light guiding lens,
The second light source emits a second light toward an incident surface of the second light guiding lens,
The vehicle lamp is characterized in that the shade blocks the first light traveling from the first light source toward the incident surface of the second light guide lens, and blocks the second light traveling from the second light source toward the incident surface of the first light guide lens.
[10] The vehicular lamp according to [9], characterized in that, when the light source unit is attached to the lamp body, the first light source and the second light source are arranged side by side in the vertical direction.
　以上のように、本発明の態様によれば、互いに隣り合う光源から出射される光をその間で適切に遮光することを可能とした光源ユニット、並びにそのような光源ユニットを用いて好適な車両用灯具を提供することが可能である。 As described above, according to the aspects of the present invention, it is possible to provide a light source unit that can appropriately block light emitted from adjacent light sources between them, and a suitable vehicle lamp using such a light source unit.
本発明の一本実施形態に係る光源ユニットを備えた車両用灯具の構成を示す断面図である。1 is a cross-sectional view showing a configuration of a vehicle lamp including a light source unit according to an embodiment of the present invention. 図１に示す光源ユニット、第１の導光レンズ及び第２の導光レンズの構成を示す斜視図である。2 is a perspective view showing the configuration of a light source unit, a first light guiding lens, and a second light guiding lens shown in FIG. 1 . 図１に示す光源ユニットの構成を示す斜視図である。FIG. 2 is a perspective view showing a configuration of a light source unit shown in FIG. 1 . 図１に示す光源ユニットの構成を示す正面図である。FIG. 2 is a front view showing the configuration of the light source unit shown in FIG. 1 . 図４中に示す線分Ｖ－Ｖによる光源ユニットの縦断面図である。5 is a vertical cross-sectional view of the light source unit taken along line VV shown in FIG. 4. 図４中に示す線分ＶＩＡ－ＶＩＡによる光源ユニットの横断面図である。5 is a cross-sectional view of the light source unit taken along line VIA-VIA shown in FIG. 4. 図６Ａ中に示す囲み部分ＶＩＢを拡大した断面図である。FIG. 7 is an enlarged cross-sectional view of the boxed portion VIB shown in FIG. 6A. 図１に示す光源ユニットの構成を示す側面図である。FIG. 2 is a side view showing the configuration of the light source unit shown in FIG. 1 . 図１に示す光源ユニットのシェードを取り外した状態を示す正面図。FIG. 2 is a front view showing a state in which the shade of the light source unit shown in FIG. 1 is removed. 図８Ａに示す囲み部分ＶＩＩＩＢを拡大した正面図である。FIG. 8B is an enlarged front view of boxed portion VIIIB shown in FIG. 8A. 図８Ａに示す囲み部分ＶＩＩＩＣを拡大した正面図である。FIG. 8B is an enlarged front view of boxed portion VIIIC shown in FIG. 8A. 図１に示す光源ユニットが備えるシェードの構成を示す斜視図である。2 is a perspective view showing a configuration of a shade included in the light source unit shown in FIG. 1 . 図９に示すシェードの構成を示す背面図である。FIG. 10 is a rear view showing the configuration of the shade shown in FIG. 9 . 図１０Ａに示す囲み部分ＸＢを拡大した背面図である。FIG. 10B is an enlarged rear view of the enclosed area XB shown in FIG. 10A. 図１０Ａに示す囲み部分ＸＣを拡大した背面図である。FIG. 10B is an enlarged rear view of the enclosed portion XC shown in FIG. 10A. 図１に示す車両用灯具の点灯時の状態を説明するための断面図である。FIG. 2 is a cross-sectional view for explaining a state when the vehicular lamp shown in FIG. 1 is turned on. 図１に示す車両用灯具のシェードの変形例を示す断面図である。4 is a cross-sectional view showing a modified example of the shade of the vehicle lamp shown in FIG. 1. 図１に示す車両用灯具のシェードの変形例を示す断面図である。4 is a cross-sectional view showing a modified example of the shade of the vehicle lamp shown in FIG. 1. 図１に示す車両用灯具におけるシェードの固定構造の変形例を示す正面図である。1. FIG. 4 is a front view showing a modified example of the fixing structure of the shade in the vehicle lamp shown in FIG.
　以下、本発明の実施形態について、図面を参照して詳細に説明する。
　なお、以下の説明で用いる図面においては、各構成要素を見やすくするため、構成要素によって寸法の縮尺を異ならせて示すことがあり、各構成要素の寸法比率などが実際と同じであるとは限らないものとする。 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
In the drawings used in the following description, in order to make each component easier to see, the dimensions of the components may be shown at different scales, and the dimensional ratios of each component may not necessarily be the same as the actual ones.
　本発明の一実施形態として、例えば図１～図１４に示す光源ユニット１を備えた車両用灯具１００について説明する。 As one embodiment of the present invention, a vehicle lamp 100 equipped with a light source unit 1 as shown in Figures 1 to 14 will be described.
　なお、図１は、光源ユニット１を備えた車両用灯具１００の構成を示す断面図である。図２は、光源ユニット１、第１の導光レンズ２Ａ及び第２の導光レンズ２Ｂの構成を示す斜視図である。図３は、光源ユニット１の構成を示す斜視図である。図４は、光源ユニット１の構成を示す正面図である。図５は、図４中に示す線分Ｖ－Ｖによる光源ユニット１の縦断面図である。図６Ａは、図４中に示す線分Ｂ－Ｂによる光源ユニット１の横断面図である。図６Ｂは、囲み部分ＶＩＢを拡大した断面図である。図７は、光源ユニット１の構成を示す側面図である。図８Ａは、光源ユニット１のシェード８を取り外した状態を示す正面図である。図８Ｂは、図８Ａに示す囲み部分ＶＩＩＩＢを拡大した正面図である。図８Ｃは、図８Ａに示す囲み部分ＶＩＩＩＣを拡大した正面図である。図９は、光源ユニット１が備えるシェード８の構成を示す斜視図である。図１０Ａは、シェード８の構成を示す背面図である。図１０Ｂは、図１０Ａに示す囲み部分ＸＢを拡大した背面図である。図１０Ｃは、図１０Ａに示す囲み部分ＸＣを拡大した背面図である。図１１は、車両用灯具１００の点灯時の状態を説明するための断面図である。図１２Ａ、図１２Ｂは、車両用灯具１００のシェード８の変形例を示す断面図である。図１３は、車両用灯具１００におけるシェード８の固定構造２０の変形例を示す正面図である。 1 is a cross-sectional view showing the configuration of a vehicle lamp 100 including a light source unit 1. FIG. 2 is a perspective view showing the configuration of the light source unit 1, the first light guide lens 2A, and the second light guide lens 2B. FIG. 3 is a perspective view showing the configuration of the light source unit 1. FIG. 4 is a front view showing the configuration of the light source unit 1. FIG. 5 is a vertical cross-sectional view of the light source unit 1 taken along line V-V shown in FIG. 4. FIG. 6A is a horizontal cross-sectional view of the light source unit 1 taken along line B-B shown in FIG. 4. FIG. 6B is a cross-sectional view showing an enlargement of the enclosed portion VIB. FIG. 7 is a side view showing the configuration of the light source unit 1. FIG. 8A is a front view showing the state in which the shade 8 of the light source unit 1 has been removed. FIG. 8B is a front view showing an enlargement of the enclosed portion VIIIB shown in FIG. 8A. FIG. 8C is a front view showing an enlargement of the enclosed portion VIIIC shown in FIG. 8A. FIG. 9 is a perspective view showing the configuration of the shade 8 included in the light source unit 1. FIG. 10A is a rear view showing the configuration of the shade 8. 10B is an enlarged rear view of the enclosed portion XB shown in FIG. 10A. FIG. 10C is an enlarged rear view of the enclosed portion XC shown in FIG. 10A. FIG. 11 is a cross-sectional view for explaining the state of the vehicle lamp 100 when it is turned on. FIG. 12A and FIG. 12B are cross-sectional views showing modified examples of the shade 8 of the vehicle lamp 100. FIG. 13 is a front view showing a modified example of the fixing structure 20 of the shade 8 in the vehicle lamp 100.
　また、以下に示す図面では、ＸＹＺ直交座標系を設定し、Ｘ軸方向を光源ユニット１（車両用灯具１００）の前後方向（長さ方向）、Ｙ軸方向を光源ユニット１（車両用灯具１００）の左右方向（幅方向）、Ｚ軸方向を光源ユニット１（車両用灯具１００）の上下方向（高さ方向）として、それぞれ示すものとする。 In addition, in the drawings shown below, an XYZ Cartesian coordinate system is set, with the X-axis direction representing the front-to-rear direction (length direction) of the light source unit 1 (vehicle lamp 100), the Y-axis direction representing the left-to-right direction (width direction) of the light source unit 1 (vehicle lamp 100), and the Z-axis direction representing the up-down direction (height direction) of the light source unit 1 (vehicle lamp 100).
　本実施形態の車両用灯具１００は、図１に示すように、車両（図示せず。）の後端側の両コーナー部（本実施形態では左後端側のコーナー部）に搭載されるリアコンビネーションランプの一部として、赤色発光するテールランプＴＬＬとしての機能と、テールランプＴＬＬよりも明るく赤色発光するブレーキランプＢＲＬとしての機能とを備えている。 As shown in FIG. 1, the vehicle lamp 100 of this embodiment is part of a rear combination lamp mounted on both corners of the rear end of a vehicle (not shown) (the corners on the left rear end in this embodiment), and functions as a tail lamp TLL that emits red light, and as a brake lamp BRL that emits red light brighter than the tail lamp TLL.
　なお、以下の説明において、「前」「後」「左」「右」「上」「下」との記載は、特に断りのない限り、車両用灯具１００（光源ユニット１）を正面（車両後方）から見たときのそれぞれの方向を意味するものとする。したがって、車両を正面（車両前方）から見たときのそれぞれの方向とは、前後左右を逆にした方向となっている。 In the following description, unless otherwise specified, the terms "front," "rear," "left," "right," "upper," and "lower" refer to the respective directions when the vehicle lamp 100 (light source unit 1) is viewed from the front (rear of the vehicle). Therefore, when the vehicle is viewed from the front (front of the vehicle), the respective directions are the reverse of front, rear, left, and right.
　具体的に、この車両用灯具１００は、正面（前面）が開口したハウジング１０１と、このハウジング１０１の開口を覆う透明なアウターレンズ（カバーレンズ）１０２とにより構成される灯体１０３の内側に、本実施形態の光源ユニット１と、インナーレンズとなる棒状の第１の導光レンズ２Ａ及び第２の導光レンズ２Ｂと、第１のエクステンション１０４Ａ及び第２のエクステンション１０４Ｂとを収容した構成となっている。 Specifically, this vehicle lamp 100 is configured to house the light source unit 1 of this embodiment, rod-shaped first light guide lens 2A and second light guide lens 2B that serve as inner lenses, and first extension 104A and second extension 104B inside a lamp body 103 that is composed of a housing 101 that is open at the front (front face) and a transparent outer lens (cover lens) 102 that covers the opening of this housing 101.
　また、灯体１０３は、車両の後端側の両コーナー部に付与されるスラント形状に合わせて、車幅方向の中央部から両端部に向かって湾曲した形状を有している。なお、灯体１０３の形状については、このような湾曲した形状に限らず、車両のデザイン等に合わせて、適宜変更することが可能である。 The lamp 103 also has a curved shape from the center toward both ends in the vehicle width direction to match the slanted shape given to both corners on the rear end side of the vehicle. Note that the shape of the lamp 103 is not limited to this curved shape, and can be changed as appropriate to match the design of the vehicle, etc.
　本実施形態の光源ユニット１は、交換（取替）可能なカプラー付ソケットとして、ハウジング１０１（灯体１０３）の背面（後面）側に設けられた取付孔１０１ａから、その正面（前面）側を灯体１０３の内側に挿入した状態で、取付孔１０１ａの周囲にリング状のパッキン（Ｏリング）１０５を介して着脱自在に取り付けることが可能となっている。 The light source unit 1 of this embodiment is a socket with a replaceable coupler, and can be detachably attached via a ring-shaped packing (O-ring) 105 around the mounting hole 101a provided on the rear side of the housing 101 (lamp body 103), with its front side inserted into the inside of the lamp body 103 through the mounting hole 101a.
　光源ユニット１は、図２～図８Ｃに示すように、互いに隣り合う第１の光源３Ａ及び第２の光源３Ｂと、第１の光源３Ａ及び第２の光源３Ｂが実装された回路基板４と、回路基板４と熱的に接続されたヒートシンク５と、回路基板４と電気的に接続されたコネクタ部６が設けられたソケット本体７と、第１の光源３Ａ及び第２の光源３Ｂの正面側に位置して、第１の光源３Ａと第２の光源３Ｂとの間を横断するように配置されたシェード８とを備えている。 As shown in Figs. 2 to 8C, the light source unit 1 includes a first light source 3A and a second light source 3B adjacent to each other, a circuit board 4 on which the first light source 3A and the second light source 3B are mounted, a heat sink 5 thermally connected to the circuit board 4, a socket body 7 provided with a connector portion 6 electrically connected to the circuit board 4, and a shade 8 positioned on the front side of the first light source 3A and the second light source 3B and arranged to cross between the first light source 3A and the second light source 3B.
　第１の光源３Ａ及び第２の光源３Ｂは、それぞれ赤色光（以下、「光」という。）Ｌ１，Ｌ２を発する少なくとも１つ又は複数（本実施形態では４つ）の発光素子９を有している。 The first light source 3A and the second light source 3B each have at least one or more (four in this embodiment) light-emitting elements 9 that emit red light (hereinafter referred to as "light") L1 and L2, respectively.
　発光素子９は、例えばＬＥＤからなり、このＬＥＤを駆動する駆動回路（図示せず。）が設けられた回路基板４の面上に実装されて、正面側に向けて光を放射状に出射する。また、複数の発光素子９は、同じ回路基板４の同一面上に設けられて、互いに同一方向に向けて光Ｌ１，Ｌ２を放射状に出射する。 The light-emitting element 9 is, for example, an LED, and is mounted on the surface of the circuit board 4 on which a drive circuit (not shown) for driving the LED is provided, and emits light radially toward the front side. In addition, multiple light-emitting elements 9 are provided on the same surface of the same circuit board 4, and emit light L1, L2 radially in the same direction.
　また、第１の光源３Ａと第２の光源３Ｂとは、この光源ユニット１の中心軸を挟んで回路基板４の面内における一の方向（本実施形態では上下方向）に並んで配置されている。 The first light source 3A and the second light source 3B are arranged side by side in one direction (the up-down direction in this embodiment) on the surface of the circuit board 4, sandwiching the central axis of the light source unit 1.
　光源ユニット１は、各光源３Ａ，３Ｂを構成する複数の発光素子９の正面側の周囲を囲む枠体１０と、枠体１０の内側に埋め込まれた封止材１１とを有している。 The light source unit 1 has a frame body 10 that surrounds the front side of the multiple light-emitting elements 9 that make up each light source 3A, 3B, and a sealing material 11 embedded inside the frame body 10.
　枠体１０は、例えば円筒状の白色樹脂からなり、各光源３Ａ，３Ｂの周囲を囲んだ状態で、回路基板４の面上に取り付けられている。封止材１１は、枠体１０の内側に埋め込まれた状態で、各光源３Ａ，３Ｂを封止している。 The frame 10 is made of, for example, a cylindrical white resin, and is attached to the surface of the circuit board 4 while surrounding each of the light sources 3A and 3B. The sealing material 11 is embedded inside the frame 10 and seals each of the light sources 3A and 3B.
　なお、複数の発光素子９を１つの光源３Ａ，３Ｂとみなす場合、各光源３Ａ，３Ｂから出射されるＬ１，Ｌ２の光軸については、複数の発光素子９の中心軸と一致するものとする。 When multiple light-emitting elements 9 are regarded as one light source 3A, 3B, the optical axes L1, L2 emitted from each light source 3A, 3B are assumed to coincide with the central axis of the multiple light-emitting elements 9.
　光源ユニット１は、ヒートシンク５とソケット本体７とをインサート成形することによって、これらヒートシンク５とソケット本体７とが一体化された構造を有している。 The light source unit 1 has a structure in which the heat sink 5 and the socket body 7 are integrated by insert molding the heat sink 5 and the socket body 7.
　なお、光源ユニット１は、別々に形成されたヒートシンク５とソケット本体７とをネジ止め等により一体化した構造であってもよい。さらに、ヒートシンク５とソケット本体７とを同じ材料を用いて一体に形成してもよい。 The light source unit 1 may have a structure in which the heat sink 5 and the socket body 7, which are formed separately, are integrated by screwing or the like. Furthermore, the heat sink 5 and the socket body 7 may be integrally formed using the same material.
　ヒートシンク５は、例えばアルミニウム（Ａｌ）や鉄（Ｆｅ）、銅（Ｃｕ）などの熱電導性の高い金属材料からなる。ソケット本体７は、例えば、ポリエチレンテレフタレート（ＰＥＴ）やポリブチレンテレフタレート（ＰＢＴ）、ポリアミド（ＰＡ）などの絶縁樹脂材料からなる。また、ソケット本体７には、例えば、炭素やセラミック、金属などの熱伝導率の高いフィラーを樹脂に添加したものなどを用いてもよい。 The heat sink 5 is made of a metal material with high thermal conductivity, such as aluminum (Al), iron (Fe), or copper (Cu). The socket body 7 is made of an insulating resin material, such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or polyamide (PA). The socket body 7 may also be made of a resin to which a filler with high thermal conductivity, such as carbon, ceramic, or metal, has been added.
　ヒートシンク５は、略円板状のベース部５ａと、ベース部５ａの正面（前面）側の略中央部から断面略方形状に突出された突起部５ｂと、ベース部５ａの背面（後面）側から幅方向に並んだ状態で縦板状に突出された複数の放熱フィン５ｃとを有している。 The heat sink 5 has a roughly disk-shaped base portion 5a, a protrusion portion 5b that protrudes from roughly the center of the front (front) side of the base portion 5a and has a roughly square cross section, and a number of heat dissipation fins 5c that protrude in a vertical plate shape and are aligned in the width direction from the back (rear) side of the base portion 5a.
　ソケット本体７は、略円板状のベース部７ａと、ベース部７ａの前面側の略中央部から前方に向かって突出された断面略円形状の筒壁部７ｂと、筒壁部７ｂの内側及びベース部９ａを前後方向に貫通する断面略方形状の貫通孔７ｃとを有している。 The socket body 7 has a substantially disk-shaped base portion 7a, a cylindrical wall portion 7b with a substantially circular cross section that protrudes forward from approximately the center of the front side of the base portion 7a, and a through hole 7c with a substantially square cross section that penetrates the inside of the cylindrical wall portion 7b and the base portion 9a in the front-rear direction.
　パッキン１０５は、筒壁部７ｂを貫通させた状態で、ベース部７ａに接触した状態で取り付けられる。 The gasket 105 is attached in a state where it penetrates the cylindrical wall portion 7b and is in contact with the base portion 7a.
　筒壁部７ｂの外周面には、複数（本実施形態では上下２つ）の爪部７ｄと、複数（本実施形態では左右２つ）の凸部７ｅとが周方向に並んで設けられている。 The outer peripheral surface of the tube wall portion 7b is provided with multiple claw portions 7d (two, one above and one below, in this embodiment) and multiple protrusions 7e (two, one on the left and one on the right, in this embodiment) lined up in the circumferential direction.
　このうち、爪部７ｄは、上記ハウジング１０１の取付孔１０１ａの周囲に設けられた切欠部（図示せず。）から灯体１０３の内側に挿入された後、ソケット本体７を取付孔１０１ａの中心軸回りに回転させることによって、ハウジング１０１側の係止受部（図示せず。）に係止される部分である。 Of these, the claw portion 7d is inserted into the inside of the light body 103 through a notch (not shown) provided around the mounting hole 101a of the housing 101, and then is engaged with a locking receiving portion (not shown) on the housing 101 side by rotating the socket body 7 around the central axis of the mounting hole 101a.
　一方、凸部７ｅは、取付孔１０１ａの切欠部から灯体１０３の内側に挿入された後、ソケット本体７を取付孔１０１ａの中心軸回りに回転させることによって、上記ハウジング１０１の取付孔１０１ａに対する抜け止めとなる部分である。 On the other hand, the protrusion 7e is a part that prevents the socket body 7 from coming out of the mounting hole 101a of the housing 101 by rotating the socket body 7 around the central axis of the mounting hole 101a after it is inserted into the inside of the light body 103 through the notch in the mounting hole 101a.
　また、凸部９ｅは、その形状の違いによって、仕様の異なるカプラー付ソケットの取付孔１０１ａに対する誤った取り付けを防止する部分となっている。 The difference in shape of the protrusion 9e also serves to prevent incorrect installation into the mounting hole 101a of a socket with a coupler of different specifications.
　ソケット本体７は、貫通孔７ｃよりも下方に位置して筒壁部７ｂの内側及びベース部７ａを前後方向に貫通する貫通孔７ｆと、ベース部７ａの背面側の貫通孔７ｆの周囲から後方に向かって突出された略矩形筒状の嵌合部７ｇとを有している。 The socket body 7 has a through hole 7f that is located below the through hole 7c and penetrates the inside of the tube wall portion 7b and the base portion 7a in the front-rear direction, and a roughly rectangular tubular fitting portion 7g that protrudes rearward from the periphery of the through hole 7f on the rear side of the base portion 7a.
　コネクタ部６は、複数のリード端子１２を有している。各リード端子１２は、コネクタ部６の本体部６ａを前後方向に貫通した状態で、この本体部６ａに一体に取り付けられている。 The connector portion 6 has multiple lead terminals 12. Each lead terminal 12 is attached integrally to the main body portion 6a of the connector portion 6, penetrating the main body portion 6a in the front-rear direction.
　コネクタ部６は、嵌合部７ｇの内側にリード端子１２が位置するように、貫通孔７ｆの内側に本体部６ａを嵌め付けることによって構成されている。 The connector portion 6 is constructed by fitting the main body portion 6a inside the through hole 7f so that the lead terminal 12 is positioned inside the mating portion 7g.
　複数のリード端子１２は、回路基板４を厚み方向に貫通する複数の孔部４ａを貫通した状態で、各孔部４ａ周囲にあるランド部とはんだ接合により固定されている。これにより、複数のリード端子１２は、回路基板４と電気的に接続されている。 The multiple lead terminals 12 are fixed to the land portions around each hole 4a by soldering while passing through the multiple holes 4a that penetrate the circuit board 4 in the thickness direction. This electrically connects the multiple lead terminals 12 to the circuit board 4.
　ヒートシンク５とソケット本体７とは、貫通孔７ｃに突起部５ｂを嵌合し、互いのベース部５ａ，５ａを突き合わせた状態で一体化されている。また、突起部５ｂの先端と貫通孔７ｃとの間には、その間を気密に封止するシール部材１３が配置されている。 The heat sink 5 and the socket body 7 are integrated with the protrusion 5b fitted into the through hole 7c and the base parts 5a, 5a butted together. In addition, a seal member 13 is disposed between the tip of the protrusion 5b and the through hole 7c to hermetically seal the space between them.
　筒壁部７ｂの内側の前面には、基板取付部１４が設けられている。基板取付部１４は、貫通孔７ｃから露出した突起部５ｂの先端面と、筒壁部７ｂの内側の前面とが連続した平坦面により形成されている。 The inner front surface of the tube wall portion 7b is provided with a circuit board attachment portion 14. The circuit board attachment portion 14 is formed by a flat surface that is continuous with the tip surface of the protrusion portion 5b exposed from the through hole 7c and the inner front surface of the tube wall portion 7b.
　回路基板４は、この基板取付部１４に熱伝導性接着剤１５を介して取り付けられている。これにより、回路基板４は、熱伝導性接着剤１５及び基板取付部１４の一部を構成する突起部５ｂを介してヒートシンク５と熱的に接続されている。 The circuit board 4 is attached to this board mounting portion 14 via a thermally conductive adhesive 15. As a result, the circuit board 4 is thermally connected to the heat sink 5 via the thermally conductive adhesive 15 and the protrusion 5b that constitutes part of the board mounting portion 14.
　ヒートシンク５は、回路基板４が取り付けられた基板取付部１４を介して各光源３Ａ，３Ｂが発する熱を外部へと放熱させる。一方、回路基板４は、この状態において、ヒートシンク５とは電気的に絶縁されている。 The heat sink 5 dissipates heat generated by each of the light sources 3A and 3B to the outside via the board mounting portion 14 to which the circuit board 4 is attached. Meanwhile, in this state, the circuit board 4 is electrically insulated from the heat sink 5.
　シェード８は、有色（例えば黒色）の遮光部材からなり、略平板状の遮光部８ａと、遮光部８ａの両端に位置する一対の固定部８ｂとを有している。 The shade 8 is made of a colored (e.g. black) light-shielding material and has a substantially flat light-shielding portion 8a and a pair of fixing portions 8b located at both ends of the light-shielding portion 8a.
　一対の固定部８ｂは、ソケット本体７の筒壁部７ｂが嵌合される溝部８１と、この溝部８１の外側から後方に向かって延在する弾性片８２とを有している。 The pair of fixing parts 8b have a groove 81 into which the tubular wall part 7b of the socket body 7 is fitted, and an elastic piece 82 that extends rearward from the outside of this groove 81.
　弾性片８２は、溝部８１の底部を支点にして筒壁部７ｂの径方向に弾性変形可能に設けられている。 The elastic piece 82 is arranged so that it can elastically deform in the radial direction of the tube wall portion 7b, with the bottom of the groove portion 81 as a fulcrum.
　ところで、本実施形態の光源ユニット１は、図６Ａ～図１０Ｃに示すように、一対の固定部８ｂを筒壁部７ｂに固定するための一対の固定構造２０を有している。 As shown in Figures 6A to 10C, the light source unit 1 of this embodiment has a pair of fixing structures 20 for fixing the pair of fixing parts 8b to the tube wall part 7b.
　一対の固定構造２０は、固定部８ｂと筒壁部７ｂとのうち、何れか一方（本実施形態では固定部８ｂ）に設けられた一対の被係止部２１と、何れか他方（本実施形態では筒壁部７ｂ）に設けられた一対の係止部２２と有している。 The pair of fixing structures 20 has a pair of engaging portions 21 provided on either the fixing portion 8b or the tube wall portion 7b (in this embodiment, the fixing portion 8b), and a pair of engaging portions 22 provided on the other (in this embodiment, the tube wall portion 7b).
　本実施形態において、一対の被係止部２１は、一対の固定部８ｂの弾性片８２に設けられた係止孔により構成されている。 In this embodiment, the pair of engaging portions 21 are formed by engaging holes provided in the elastic pieces 82 of the pair of fixing portions 8b.
　これに対して、一対の係止部２２は、筒壁部７ｂの外周面における幅方向の両側に位置する凸部７ｅの正面側に設けられた係止爪により構成されている。 In contrast, the pair of locking portions 22 are formed by locking claws provided on the front side of the protrusions 7e located on both sides in the width direction on the outer peripheral surface of the tube wall portion 7b.
　一対の固定構造２０では、一対の被係止部（係止孔）２１に一対の係止部（係止爪）２２が係止されることによって、一対の固定部８ｂ（弾性片８２）を筒壁部７ｂの外周側に固定することが可能である。 In the pair of fixing structures 20, a pair of locking portions (locking claws) 22 are locked to a pair of locked portions (locking holes) 21, so that a pair of fixing portions 8b (elastic pieces 82) can be fixed to the outer periphery of the tube wall portion 7b.
　これにより、シェード８は、筒壁部７ｂ（ソケット本体７）に対して着脱自在に取り付けられている。また、シェード８の遮光部８ａは、第１の光源３Ａ及び第２の光源３Ｂの正面側に位置して、第１の光源３Ａと第２の光源３Ｂとの間を横断するように配置される。 As a result, the shade 8 is detachably attached to the tube wall portion 7b (socket body 7). The light-shielding portion 8a of the shade 8 is positioned on the front side of the first light source 3A and the second light source 3B, and is disposed so as to cross between the first light source 3A and the second light source 3B.
　さらに、シェード８の一対の固定部８ｂは、筒壁部７ｂの凸部７ｅ側に固定されるため、取付孔１０１ａの周囲に取り付けられた際に爪部７ｄに加わる応力による影響を受けることなく、一対の被係止部（係止孔）２１に対する一対の係止部（係止爪）２２の係止状態を維持しながら、筒壁部７ｂの外周側に適切に固定することが可能である。 Furthermore, the pair of fixing parts 8b of the shade 8 are fixed to the protruding part 7e side of the tube wall part 7b, so that it is possible to properly fix it to the outer periphery side of the tube wall part 7b while maintaining the locking state of the pair of locking parts (locking claws) 22 with the pair of locked parts (locking holes) 21 without being affected by the stress applied to the claw parts 7d when it is attached around the mounting hole 101a.
　また、シェード８の一対の固定部８ｂは、２つの凸部７ｅの正面側且つ凸部７ｅの外周面よりも内側に位置している。これにより、シェード８が干渉することなく、ソケット本体７をハウジング１０１の取付孔１０１ａの周囲に取り付けることが可能である。 The pair of fixing parts 8b of the shade 8 are located on the front side of the two protrusions 7e and inside the outer circumferential surface of the protrusions 7e. This makes it possible to attach the socket body 7 around the mounting hole 101a of the housing 101 without interference from the shade 8.
　なお、本実施形態では、上述した固定部８ｂ側に被係止部２１が設けられ、筒壁部７ｂの外周側に係止部２２が設けられた構成となっているが、それとは逆の構成、すなわち筒壁部７ｂの外周側に被係止部２１が設けられ、固定部８ｂ側に係止部２２が設けられた構成としてもよい。 In this embodiment, the interlocking portion 21 is provided on the fixed portion 8b side, and the interlocking portion 22 is provided on the outer periphery of the tubular wall portion 7b. However, the opposite configuration may also be used, that is, the interlocking portion 21 is provided on the outer periphery of the tubular wall portion 7b, and the interlocking portion 22 is provided on the fixed portion 8b side.
　また、被係止部２１と係止部２２との係止構造については、上述した係止孔に係止爪が係止される構造に必ずしも限定されるものではなく、その係止構造について適宜変更を加えることが可能である。 In addition, the locking structure between the locked portion 21 and the locking portion 22 is not necessarily limited to the structure in which the locking claws are locked into the locking holes described above, and the locking structure can be modified as appropriate.
　一対の固定構造２０は、シェード８と筒壁部７ｂとの何れか一方（本実施形態では筒壁部７ｂ）に設けられた一対の嵌合凹部２３ａ，２３ｂと、何れか他方（本実施形態ではシェード８）に設けられた嵌合凸部２４ａ，２４ｂとを有している。 The pair of fixing structures 20 has a pair of mating recesses 23a, 23b provided on either the shade 8 or the tube wall portion 7b (tube wall portion 7b in this embodiment), and mating protrusions 24a, 24b provided on the other (shade 8 in this embodiment).
　　本実施形態において、一対の嵌合凹部２３ａ，２３ｂは、筒壁部７ｂの外周面における幅方向の両側に位置して、正面視で円弧状の凹部により構成されている。また、一方の嵌合凹部２３ａよりも他方の嵌合凹部２３ｂが大きくなっている。 In this embodiment, the pair of fitting recesses 23a, 23b are located on both sides in the width direction on the outer peripheral surface of the tube wall portion 7b, and are configured as arc-shaped recesses when viewed from the front. Furthermore, one fitting recess 23b is larger than the other fitting recess 23a.
　これに対して、一対の嵌合凸部２４ａ，２４ｂは、遮光部８ａの第１の光源３Ａ及び第２の光源３Ｂと対向する側における幅方向の両側に位置して、正面視で円弧状の凸部により構成されている。また、一方の嵌合凸部２４ａよりも他方の嵌合凸部２４ｂが大きくなっている。 In contrast, the pair of mating protrusions 24a, 24b are located on both sides in the width direction of the light-shielding portion 8a on the side facing the first light source 3A and the second light source 3B, and are formed of arc-shaped protrusions when viewed from the front. In addition, one mating protrusion 24b is larger than the other mating protrusion 24a.
　一対の固定構造２０では、一方の嵌合凹部２３ａに一方の嵌合凸部２４ａが嵌合され、他方の嵌合凹部２３ｂに他方の嵌合凸部２４ｂが嵌合されることによって、筒壁部７ｂに対してシェード８がソケット本体７の中心軸回りに回転することを防止している。 In the pair of fixing structures 20, one mating protrusion 24a is fitted into one mating recess 23a, and the other mating protrusion 24b is fitted into the other mating recess 23b, preventing the shade 8 from rotating around the central axis of the socket body 7 relative to the tube wall portion 7b.
　また、一方の嵌合凹部２３ａ及び嵌合凸部２４ａと他方の嵌合凹部２３ｂ及び嵌合凸部２４ｂとは、一対の固定構造２０の一方側と他方側との間で非対称な形状を有している。これにより、筒壁部７ｂに対してシェード８が逆向きに取り付けられることを防止している。 Furthermore, the fitting recess 23a and fitting protrusion 24a on one side and the fitting recess 23b and fitting protrusion 24b on the other side have asymmetric shapes between one side and the other side of the pair of fixing structures 20. This prevents the shade 8 from being attached in the opposite direction to the tube wall portion 7b.
　なお、本実施形態では、上述した筒壁部７ｂの内周側に嵌合凹部２３ａ，２３ｂが設けられ、シェード８側に嵌合凸部２４ａ，２４ｂが設けられた構成となっているが、それとは逆の構成、すなわち、シェード８側に嵌合凹部２３ａ，２３ｂが設けられ、筒壁部７ｂの内周側に嵌合凸部２４ａ，２４ｂが設けられた構成としてもよい。 In this embodiment, the fitting recesses 23a, 23b are provided on the inner periphery of the above-mentioned tube wall portion 7b, and the fitting protrusions 24a, 24b are provided on the shade 8 side. However, the opposite configuration may also be used, that is, the fitting recesses 23a, 23b are provided on the shade 8 side, and the fitting protrusions 24a, 24b are provided on the inner periphery of the tube wall portion 7b.
　また、嵌合凹部２３ａ，２３ｂと嵌合凸部２４ａ，２４ｂとの嵌合構造については、上述した円弧状のものに限らず、その形状について適宜変更を加えることが可能である。 In addition, the fitting structure between the fitting recesses 23a, 23b and the fitting protrusions 24a, 24b is not limited to the arc shape described above, and the shape can be modified as appropriate.
　さらに、一方の嵌合凹部２３ａ及び嵌合凸部２４ａと他方の嵌合凹部２３ｂ及び嵌合凸部２４ｂとの非対称形状についても適宜変更を加えることが可能である。 Furthermore, it is possible to appropriately modify the asymmetrical shapes of the mating recess 23a and mating protrusion 24a on one side and the mating recess 23b and mating protrusion 24b on the other side.
　第１の導光レンズ２Ａ及び第２の導光レンズ２Ｂは、図１及び図２に示すように、例えばポリカーボネイトやアクリル等の透明樹脂やガラスなどの長尺棒状の光透過性部材からなる。 As shown in Figures 1 and 2, the first light-guiding lens 2A and the second light-guiding lens 2B are made of a long, rod-shaped light-transmitting material such as transparent resin such as polycarbonate or acrylic, or glass.
　第１の導光レンズ２Ａ及び第２の導光レンズ２Ｂは、車幅方向に延在し、且つ、車両の後端側の両コーナー部に付与されるスラント形状に合わせて、車幅方向の内側よりも外側が後退する方向に向かって湾曲した形状を有している。 The first light guide lens 2A and the second light guide lens 2B extend in the vehicle width direction, and have a curved shape that curves in a direction that is more recessed on the outside than on the inside in the vehicle width direction, in accordance with the slant shape given to both corners on the rear end side of the vehicle.
　なお、第１の導光レンズ２Ａ及び第２の導光レンズ２Ｂの形状については、このような湾曲した形状に限らず、車両のデザイン等に合わせて、適宜変更することが可能である。 The shapes of the first light-guiding lens 2A and the second light-guiding lens 2B are not limited to this curved shape, and can be changed as appropriate to suit the design of the vehicle, etc.
　第１の導光レンズ２Ａは、第１の光源３Ａから出射された第１の光Ｌ１を、その基端側に設けられた入射面２５ａから内部へと入射し、その先端側に向けて第１の光Ｌ１を導光させると共に、その背面側に設けられた複数の反射カット２６ａで反射された第１の光Ｌ１を、その正面側に設けられた出射面２７ａから出射する。 The first light guide lens 2A receives the first light L1 emitted from the first light source 3A through an entrance surface 25a provided on the base end side and guides the first light L1 toward the tip side, while the first light L1 reflected by multiple reflection cuts 26a provided on the back side is emitted from an exit surface 27a provided on the front side.
　第２の導光レンズ２Ｂは、第２の光源３Ｂから出射された第２の光Ｌ２を、その基端側に設けられた入射面２５ｂから内部へと入射し、その先端側に向けて第２の光Ｌ２を導光させると共に、その背面側に設けられた複数の反射カット２６ｂで反射された第２の光Ｌ２を、その正面側に設けられた出射面２７ｂから出射する。 The second light guide lens 2B receives the second light L2 emitted from the second light source 3B through the entrance surface 25b provided on the base end side and guides the second light L2 toward the tip side, while the second light L2 reflected by the multiple reflection cuts 26b provided on the back side is emitted from the exit surface 27b provided on the front side.
　各入射面２５ａ，２５ｂは、各導光レンズ２Ａ，２Ｂの各光源３Ａ，３Ｂと対向する平坦な面（平面）により構成されている。 Each of the incident surfaces 25a, 25b is formed of a flat surface (plane) that faces each of the light sources 3A, 3B of each of the light guide lenses 2A, 2B.
　各反射カット２６ａ，２６ｂは、各導光レンズ２Ａ，２Ｂの背面側に入射した光Ｌ１，Ｌ２を各導光レンズ２Ａ，２Ｂの正面側から外部へと出射（透過）する角度で反射させるものであればよく、その形状や大きさ、数等について、特に限定されるものではない。 Each reflection cut 26a, 26b is not particularly limited in shape, size, number, etc., as long as it reflects light L1, L2 incident on the back side of each light-guiding lens 2A, 2B at an angle that causes the light L1, L2 to exit (be transmitted) from the front side of each light-guiding lens 2A, 2B to the outside.
　本実施形態では、各反射カット２６ａ，２６ｂとして、例えば、各導光レンズ２Ａ，２Ｂの背面側の中央部を各導光レンズ２Ａ，２Ｂの軸線方向とは直交する鉛直方向（本実施形態では上下方向）に切り欠く断面略三角形状の溝部が各導光レンズ２Ａ，２Ｂの軸線方向（本実施形態では左右方向）に並ぶことによって構成されている。 In this embodiment, each reflection cut 26a, 26b is configured by, for example, cutting out the center of the back side of each light guide lens 2A, 2B in a vertical direction (up-down direction in this embodiment) perpendicular to the axial direction of each light guide lens 2A, 2B, so that grooves with a roughly triangular cross section are aligned in the axial direction of each light guide lens 2A, 2B (left-right direction in this embodiment).
　なお、各反射カット２６ａ，２６ｂは、各導光レンズ２Ａ，２Ｂの背面側に、各出射面２７ａ，２７ｂの軸線方向の長さ範囲に対応して設けられている。 In addition, each reflection cut 26a, 26b is provided on the back side of each light guide lens 2A, 2B, corresponding to the axial length range of each emission surface 27a, 27b.
　また、各反射カット２６ａ，２６ｂは、各導光レンズ２Ａ，２Ｂの軸線方向において、各出射面２７ａ，２７ｂをより均一に発光させるため、各導光レンズ２Ａ，２Ｂの基端側から先端側に向かって、各反射カット２６ａ，２６ｂを形成する溝部の隣り合う間隔が漸次狭くなっていてもよく、若しくは、各反射カット２６ａ，２６ｂを形成する溝部の深さが漸次深くなっていてもよい。 Furthermore, in order to make each of the emitting surfaces 27a, 27b emit light more uniformly in the axial direction of each of the light guide lenses 2A, 2B, the intervals between adjacent grooves forming each of the reflective cuts 26a, 26b may be gradually narrowed from the base end side to the tip end side of each of the light guide lenses 2A, 2B, or the depth of the grooves forming each of the reflective cuts 26a, 26b may be gradually deepened.
　また、各導光レンズ２Ａ，２Ｂの複数の反射カット２６ａ，２６ａを挟んだ両側には、各導光レンズ２Ａ，２Ｂの内部で導光される光Ｌ１，Ｌ２を反射する一対の反射面（図示せず。）が各導光レンズ２Ａ，２Ｂの軸線方向に延在して設けられていてもよい。 Furthermore, on both sides of the multiple reflection cuts 26a, 26a of each light-guiding lens 2A, 2B, a pair of reflection surfaces (not shown) that reflect the light L1, L2 guided inside each light-guiding lens 2A, 2B may be provided extending in the axial direction of each light-guiding lens 2A, 2B.
　各出射面２７ａ，２７ｂは、各導光レンズ２Ａ，２Ｂの正面側において、軸線方向に延在し、且つ、その軸線方向と直交する断面（鉛直断面）において円弧状に湾曲した凸状の曲面により構成されている。 Each of the emission surfaces 27a, 27b extends in the axial direction on the front side of each of the light-guiding lenses 2A, 2B, and is configured as a convex curved surface that is curved in an arc shape in a cross section (vertical cross section) perpendicular to the axial direction.
　なお、各出射面２７ａ，２７ｂには、これらの出射面２７ａ，２７ｂから外部に向けて出射される光Ｌ１，Ｌ２を拡散させるための複数の拡散カット（図示せず。）が設けられた構成であってもよい。 In addition, each of the emission surfaces 27a, 27b may be provided with a plurality of diffusion cuts (not shown) for diffusing the light L1, L2 emitted from these emission surfaces 27a, 27b toward the outside.
　拡散カットとしては、例えば、フルートカットや魚眼カットと呼ばれるレンズカットや、ローレット加工やシボ加工等を施すことによって形成された凹凸構造などを挙げることができる。 Examples of diffusion cuts include lens cuts called flute cuts or fisheye cuts, and uneven structures formed by applying knurling or embossing.
　また、この拡散カットの形状等を調整することによって、各出射面２７ａ，２７ｂから出射される光Ｌ１，Ｌ２の拡散度合いを制御することが可能である。さらに、各出射面２７ａ，２７ｂの正面側に別の拡散レンズを配置した構成としてもよい。 In addition, by adjusting the shape of the diffusion cut, it is possible to control the degree of diffusion of the light L1, L2 emitted from each exit surface 27a, 27b. Furthermore, a configuration in which a separate diffusion lens is placed on the front side of each exit surface 27a, 27b may be used.
　第１のエクステンション１０４Ａ及び第２のエクステンション１０４Ｂは、図１に示すように、第１の導光レンズ２Ａ及び第２の導光レンズ２Ｂの正面側を覆う有色（例えば黒色）の遮光部材からなる。 As shown in FIG. 1, the first extension 104A and the second extension 104B are made of a colored (e.g., black) light-shielding material that covers the front side of the first light-guiding lens 2A and the second light-guiding lens 2B.
　第１のエクステンション１０４Ａは、第１の導光レンズ２Ａの出射面２７ａに対応した開口部２８ａを有して、第１の導光レンズ２Ａの出射面２７ａ以外から出射される第１の光Ｌ１を遮光する。 The first extension 104A has an opening 28a that corresponds to the exit surface 27a of the first light-guiding lens 2A, and blocks the first light L1 that is emitted from any surface other than the exit surface 27a of the first light-guiding lens 2A.
　第２のエクステンション１０４Ｂは、第２の導光レンズ２Ｂの出射面２７ｂに対応した開口部２８ｂを有して、第１の導光レンズ２Ａの出射面２７ｂ以外から出射される第２の光Ｌ２を遮光する。 The second extension 104B has an opening 28b corresponding to the exit surface 27b of the second light-guiding lens 2B, and blocks the second light L2 emitted from any surface other than the exit surface 27b of the first light-guiding lens 2A.
　なお、本実施形態の車両用灯具１００では、上述した光源ユニット１やインナーレンズとなる導光レンズ２Ａ，２Ｂの他にも、例えば、別のインナーレンズやリフレクタなどの他の部材と組み合わせることが可能である。 In addition, in the vehicle lamp 100 of this embodiment, in addition to the light source unit 1 and the light guide lenses 2A and 2B that serve as the inner lenses described above, it is possible to combine it with other components, such as another inner lens or a reflector.
　以上のような構成を有する本実施形態の車両用灯具１００では、図１１に示すように、上述したテールランプＴＬＬとして、第１の光源３Ａの点灯時に、第１の導光レンズ２Ａの出射面２７ａに対応した領域（開口部２８ａ）を赤色発光させることが可能である。 In the vehicle lamp 100 of this embodiment having the above-mentioned configuration, as shown in FIG. 11, when the first light source 3A is turned on, the area (opening 28a) corresponding to the exit surface 27a of the first light guide lens 2A can emit red light as the above-mentioned tail lamp TLL.
　一方、本実施形態の車両用灯具１００では、上述したブレーキランプＢＲＬとして、第２の光源３Ｂの点灯時に、第２の導光レンズ２Ｂの出射面２７ｂに対応した領域（開口部２８ｂ）をテールランプＴＬＬよりも明るく赤色発光させることが可能である。 On the other hand, in the vehicle lamp 100 of this embodiment, when the second light source 3B is turned on, the area (opening 28b) corresponding to the exit surface 27b of the second light guide lens 2B as the brake lamp BRL can emit a red light brighter than the tail lamp TLL.
　ところで、本実施形態の光源ユニット１は、第１の光源３Ａから第１の導光レンズ２Ａの入射面２５ａに向けて第１の光Ｌ１を出射し、第２の光源３Ｂから第２の導光レンズ２Ｂの入射面２５ｂに向けて第２の光Ｌ２を出射する。 In the light source unit 1 of this embodiment, a first light L1 is emitted from the first light source 3A toward the incident surface 25a of the first light guide lens 2A, and a second light L2 is emitted from the second light source 3B toward the incident surface 25b of the second light guide lens 2B.
　このとき、シェード８は、第１の光源３Ａから第２の導光レンズ２Ｂの入射面２５ｂに向かう第１の光Ｌ１を遮光部８ａにより遮光する一方、第２の光源３Ｂから第１の導光レンズ２Ａの入射面２５ａに向かう第２の光Ｌ２を遮光部８ａにより遮光する。 At this time, the shade 8 blocks the first light L1 traveling from the first light source 3A toward the incident surface 25b of the second light guide lens 2B with the light shielding portion 8a, while blocking the second light L2 traveling from the second light source 3B toward the incident surface 25a of the first light guide lens 2A with the light shielding portion 8a.
　なお、第１の光源３Ａから第２の導光レンズ２Ｂに向かう第１の光Ｌ１の一部は、第２の導光レンズ２Ｂを通過し、第２の光源３Ｂから第１の導光レンズ２Ａに向かう第２の光Ｌ２の一部は、第１の導光レンズ２Ａを通過する。 Note that a portion of the first light L1 traveling from the first light source 3A to the second light-guiding lens 2B passes through the second light-guiding lens 2B, and a portion of the second light L2 traveling from the second light source 3B to the first light-guiding lens 2A passes through the first light-guiding lens 2A.
　一方、各導光レンズ２Ａ，２Ｂの内部で導光される光Ｌ１，Ｌ２とはならないことから、各導光レンズ２Ａ，２Ｂの出射面２７ａ，２７ｂから外部へと漏れ出す光Ｌ１，Ｌ２とはならない。 On the other hand, since the light L1 and L2 are not guided inside the light guide lenses 2A and 2B, they do not leak out from the exit surfaces 27a and 27b of the light guide lenses 2A and 2B to the outside.
　これにより、本実施形態の光源ユニット１では、第１の光源３Ａから出射された第１の光Ｌ１の一部が第２の導光レンズ２Ｂの入射面２５ｂに入射することを防止し、第２の光源３Ｂから出射された第２の光Ｌ２の一部が第１の導光レンズ２Ａの入射面２５ａに入射することを防止することが可能である。 As a result, in the light source unit 1 of this embodiment, it is possible to prevent a portion of the first light L1 emitted from the first light source 3A from entering the incident surface 25b of the second light-guiding lens 2B, and to prevent a portion of the second light L2 emitted from the second light source 3B from entering the incident surface 25a of the first light-guiding lens 2A.
　したがって、本実施形態の光源ユニット１を備えた車両用灯具１００では、互いに隣り合う光源３Ａ，３Ｂから出射される光Ｌ１，Ｌ２をその間で適切に遮光することが可能である。 Therefore, in a vehicle lamp 100 equipped with the light source unit 1 of this embodiment, it is possible to appropriately block the light L1, L2 emitted from the adjacent light sources 3A, 3B.
　このため、上述したテールランプＴＬＬとストップランプＳＴＬとを別々に点灯させているにも関わらず、意図しない光Ｌ１，Ｌ２が導光レンズ２Ａ，２Ｂから外部へと漏れ出すことで、点灯時の見栄えが悪くなるといったことを防ぐことが可能である。 As a result, even if the above-mentioned tail lamp TLL and stop lamp STL are turned on separately, it is possible to prevent unintended light L1, L2 from leaking out from the light-guiding lenses 2A, 2B to the outside, which can lead to a poor appearance when turned on.
　なお、本発明は、上記実施形態のものに必ずしも限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 The present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
　具体的に、遮光部８ａは、図１１に示すように、第１の光源３Ａと第２の光源３Ｂとを結ぶ方向（本実施形態では上下方向）の断面（鉛直断面）において、第１の光源３Ａ及び第２の光源３Ｂと向かい合う側（背面側）の寸法ａよりも、それとは反対側（正面側）の寸法ｂが大きくなる形状を有している。 Specifically, as shown in FIG. 11, the light-shielding portion 8a has a shape in which, in a cross section (vertical cross section) in the direction connecting the first light source 3A and the second light source 3B (the up-down direction in this embodiment), the dimension b on the opposite side (front side) is larger than the dimension a on the side (rear side) facing the first light source 3A and the second light source 3B.
　具体的に、この遮光部８ａには、その背面側の中央部から第１の光源３Ａ及び第２の光源３Ｂに対応した幅で後方に向かって突出した遮光壁８ｃが設けられている。遮光壁８ｃは、その鉛直断面において、遮光部８ａの正面側の寸法ｂよりも小さい寸法ａを有している。 Specifically, the light-shielding portion 8a is provided with a light-shielding wall 8c that protrudes rearward from the center of the rear side with a width corresponding to the first light source 3A and the second light source 3B. In its vertical cross section, the light-shielding wall 8c has a dimension a that is smaller than the dimension b of the front side of the light-shielding portion 8a.
　また、遮光壁８ｃは、遮光部８ａの中心から上方にずれた位置にある。これにより、遮光部８ａの背面側は、この遮光壁８ｃを挟んだ上側の寸法ｃが下側の寸法ｄよりも小さくなっている。 The light-shielding wall 8c is located at a position shifted upward from the center of the light-shielding portion 8a. As a result, the upper dimension c of the back side of the light-shielding portion 8a across the light-shielding wall 8c is smaller than the lower dimension d.
　これにより、第１の光源３Ａ及び第２の光源３Ｂにシェード８が接触することを避けながら、第１の光源３Ａから出射された第１の光Ｌ１の一部が第２の導光レンズ２Ｂの入射面２５ｂに入射することを防止し、第２の光源３Ｂから出射された第２の光Ｌ２の一部が第１の導光レンズ２Ａの入射面２５ａに入射することを最大限防止することが可能である。 This makes it possible to prevent a portion of the first light L1 emitted from the first light source 3A from entering the incident surface 25b of the second light-guiding lens 2B while avoiding contact of the shade 8 with the first light source 3A and the second light source 3B, and to prevent a portion of the second light L2 emitted from the second light source 3B from entering the incident surface 25a of the first light-guiding lens 2A to the greatest extent possible.
　なお、上記シェード８では、上述した遮光部８ａの背面側において、遮光壁８ｃを挟んだ上側の寸法ｃが下側の寸法ｄよりも小さくなっているが、例えば、図１２Ａに示すように、遮光壁８ｃを挟んだ上側の寸法ｃと下側の寸法ｄとが同じであってもよく、図１２Ｂに示すように、遮光壁８ｃを挟んだ上側の寸法ｃが下側の寸法ｄよりも大きくなっていてもよい。 In the shade 8, on the rear side of the above-mentioned light-shielding portion 8a, the upper dimension c across the light-shielding wall 8c is smaller than the lower dimension d. However, for example, as shown in FIG. 12A, the upper dimension c across the light-shielding wall 8c and the lower dimension d may be the same, or as shown in FIG. 12B, the upper dimension c across the light-shielding wall 8c may be larger than the lower dimension d.
　また、上記実施形態では、第１の光源３ＡをテールランプＴＬＬ用の光源とし、第２の光源３ＢをブレーキランプＢＲＬ用の光源とした構成となっているが、第１の光源３ＡをブレーキランプＢＲＬ用の光源とし、第２の光源３ＢをテールランプＴＬＬ用の光源とした構成であってもよい。 In addition, in the above embodiment, the first light source 3A is configured as a light source for the tail lamp TLL, and the second light source 3B is configured as a light source for the brake lamp BRL, but the first light source 3A may be configured as a light source for the brake lamp BRL, and the second light source 3B may be configured as a light source for the tail lamp TLL.
　また、上記固定構造２０では、筒壁部７ｂに対してシェード８が逆向きに取り付けられることを防止するため、上述した一方の嵌合凹部２３ａ及び嵌合凸部２４ａと、他方の嵌合凹部２３ｂ及び嵌合凸部２４ｂとが非対称な形状となっているが、例えば図１３に示すように、一方の嵌合凹部２３ａと嵌合凸部２４ａとの嵌合位置と、他方の嵌合凹部２３ｂと嵌合凸部２４ｂとの嵌合位置とが、光源ユニット１の中心軸を通る水平ラインを挟んで互いに逆向きにずれた配置としてもよい。 In addition, in the fixing structure 20, in order to prevent the shade 8 from being attached in the opposite direction to the tube wall portion 7b, the above-mentioned mating recess 23a and mating protrusion 24a on one side and the mating recess 23b and mating protrusion 24b on the other side have an asymmetrical shape. However, as shown in FIG. 13, for example, the mating position between the mating recess 23a and mating protrusion 24a on one side and the mating position between the mating recess 23b and mating protrusion 24b on the other side may be shifted in opposite directions to each other across a horizontal line passing through the central axis of the light source unit 1.
　なお、上記実施形態では、車両の後端側の両コーナー部に搭載される車両用灯具１００として、上述したテールランプＴＬＬとブレーキランプＢＲＬとを発光させる光源ユニット１を例示しているが、テールランプと、橙色発光で点滅するターンランプ又は白色発光するバックランプとを発光させる光源ユニットに本発明を適用することも可能である。 In the above embodiment, the light source unit 1 that emits the above-mentioned tail lamp TLL and brake lamp BRL is exemplified as the vehicle lamp 100 mounted on both corners of the rear end of the vehicle, but the present invention can also be applied to a light source unit that emits a tail lamp and a turn lamp that flashes with orange light or a back lamp that emits white light.
　また、車両の前端側の両コーナー部に搭載される車両用灯具として、白色発光するポジションランプ又は昼間点灯ランプ（ＤＲＬ）とターンランプとを発光させる光源ユニットに本発明を適用することも可能である。 The present invention can also be applied to a light source unit that emits white light as a position lamp or daytime running lamp (DRL) and turn signal lamp, as vehicle lighting equipment mounted on both corners of the front end of a vehicle.
　光源ユニットが備える複数の発光素子については、上述したＬＥＤ以外にも、例えばレーザーダイオード（ＬＤ）などの発光素子を用いることができる。また、発光素子が発する光の色についても、白色光や赤色光、橙色光など、その用途に応じて適宜変更することが可能である。 In addition to the LEDs mentioned above, the light source unit can also use other light emitting elements such as laser diodes (LDs). The color of the light emitted by the light emitting elements can also be changed as appropriate depending on the application, such as white light, red light, or orange light.
　なお、光源ユニットは、上述した車両用灯具以外にも、例えば、車両用室内照明やアクセサリーランプなどにも適用可能である。 In addition to the above-mentioned vehicle lamps, the light source unit can also be used, for example, in vehicle interior lighting and accessory lamps.
　１…光源ユニット　２Ａ…第１の導光レンズ　２Ｂ…第２の導光レンズ　３Ａ…第１の光源　３Ｂ…第２の光源　４…回路基板　５…ヒートシンク　６…コネクタ部　７…ソケット本体　７ｂ…筒壁部　７ｄ…爪部　７ｅ…凸部　８…シェード　２０…固定構造　２１…被係止部　２２…係止部　２３ａ，２３ｂ…嵌合凹部　２４ａ，２４ｂ…嵌合凸部　２５ａ，２５ｂ…入射面　２６ａ，２６ｂ…反射カット　２７ａ，２７ｂ…出射面　１００…車両用灯具　１０１…ハウジング　１０１ａ…取付孔　１０２…アウターレンズ　１０３…灯体　ＴＬＬ…テールランプ　ＢＲＬ…ブレーキランプ　Ｌ１…第１の光　Ｌ２…第２の光 1...light source unit 2A...first light guide lens 2B...second light guide lens 3A...first light source 3B...second light source 4...circuit board 5...heat sink 6...connector 7...socket body 7b...tubular wall 7d...claw 7e...projection 8...shade 20...fixing structure 21...retaining part 22...retaining part 23a, 23b... fitting recess 24a, 24b... fitting protrusion 25a, 25b... incident surface 26a, 26b...reflection cut 27a, 27b...exiting surface 100...vehicle lamp 101...housing 101a...mounting hole 102...outer lens 103...lamp body TLL...tail lamp BRL...brake lamp L1...first light L2...second light

Claims (10)

  1. 　互いに隣り合う第１の光源及び第２の光源と、
    　前記第１の光源及び前記第２の光源が実装された回路基板と、
    　前記回路基板が正面側に配置されたソケット本体と、
    　前記第１の光源及び前記第２の光源の正面側に位置して、前記第１の光源と前記第２の光源との間を横断するように配置されたシェードとを備える光源ユニット。     a first light source and a second light source adjacent to each other;
    a circuit board on which the first light source and the second light source are mounted;
    a socket body having the circuit board disposed on a front side thereof;
    a shade positioned on a front side of the first light source and the second light source and arranged to traverse between the first light source and the second light source.
  2. 　前記ソケット本体は、その正面側から前記第１の光源及び前記第２の光源の周囲を囲むように突出された筒壁部を有し、
    　前記シェードの両端が前記筒壁部に取り付けられていることを特徴とする請求項１に記載の光源ユニット。     the socket body has a cylindrical wall portion protruding from a front side thereof so as to surround the first light source and the second light source,
    The light source unit according to claim 1 , wherein both ends of the shade are attached to the cylindrical wall portion.
  3. 　前記シェードの両端を前記筒壁部に固定する一対の固定構造を有し、
    　前記固定構造は、前記シェードと前記筒壁部との何れか一方に設けられた被係止部と、何れか他方に設けられて、前記被係止部に係止される係止部とを含むことを特徴とする請求項２に記載の光源ユニット。     A pair of fixing structures are provided to fix both ends of the shade to the cylindrical wall portion,
    The light source unit according to claim 2, characterized in that the fixing structure includes an interlocking portion provided on one of the shade and the tubular wall portion, and a locking portion provided on the other of the shade and adapted to be locked to the interlocking portion.
  4. 　前記筒壁部の外周側に前記被係止部又は前記係止部が設けられていることを特徴とする請求項３に記載の光源ユニット。 The light source unit according to claim 3, characterized in that the locked portion or the locking portion is provided on the outer periphery of the cylindrical wall portion.
  5. 　前記固定構造は、前記シェードと前記筒壁部との何れか一方に設けられた嵌合凹部と、何れか他方に設けられて、前記嵌合凹部に嵌合される嵌合凸部とを含むことを特徴とする請求項３に記載の光源ユニット。 The light source unit according to claim 3, characterized in that the fixing structure includes a fitting recess provided on one of the shade and the tube wall portion, and a fitting protrusion provided on the other of them that fits into the fitting recess.
  6. 　前記筒壁部の内周側に前記嵌合凹部又は前記嵌合凸部が設けられていることを特徴とする請求項５に記載の光源ユニット。 The light source unit according to claim 5, characterized in that the fitting recess or the fitting protrusion is provided on the inner periphery of the cylindrical wall portion.
  7. 　前記嵌合凹部及び前記嵌合凸部は、前記一対の固定構造の一方側と他方側との間で非対称な形状を有することを特徴とする請求項５に記載の光源ユニット。 The light source unit according to claim 5, characterized in that the mating recess and the mating protrusion have an asymmetric shape between one side and the other side of the pair of fixing structures.
  8. 　前記シェードは、前記第１の光源と前記第２の光源とを結ぶ方向の断面において、前記第１の光源及び前記第２の光源と向かい合う側の寸法よりも、それとは反対側の寸法が大きくなる形状を有することを特徴とする請求項１に記載の光源ユニット。 The light source unit according to claim 1, characterized in that the shade has a shape in which, in a cross section in a direction connecting the first light source and the second light source, the dimension on the opposite side facing the first light source and the second light source is larger than the dimension on the opposite side.
  9. 　灯体と、
    　前記灯体の内側に配置された第１の導光レンズ及び第２の導光レンズと、
    　請求項１～８の何れか一項に記載の光源ユニットとを備え、
    　前記光源ユニットは、前記灯体の背面側に設けられた取付孔から前記灯体の内側に挿入された状態で、前記取付孔の周囲に着脱自在に取り付けられ、
    　前記第１の光源は、前記第１の導光レンズの入射面に向けて第１の光を出射し、
    　前記第２の光源は、前記第２の導光レンズの入射面に向けて第２の光を出射し、
    　前記シェードは、前記第１の光源から前記第２の導光レンズの入射面に向かう前記第１の光を遮光すると共に、前記第２の光源から前記第１の導光レンズの入射面に向かう前記第２の光を遮光することを特徴とする車両用灯具。     The lighting unit and
    A first light guiding lens and a second light guiding lens arranged inside the light body;
    The light source unit according to any one of claims 1 to 8,
    The light source unit is inserted into the inside of the light body through a mounting hole provided on the rear side of the light body, and is removably attached around the mounting hole,
    The first light source emits a first light toward an incident surface of the first light guiding lens,
    The second light source emits a second light toward an incident surface of the second light guiding lens,
    The vehicle lamp is characterized in that the shade blocks the first light traveling from the first light source toward the incident surface of the second light guide lens, and blocks the second light traveling from the second light source toward the incident surface of the first light guide lens.
  10. 　前記光源ユニットが前記灯体に取り付けられた状態において、前記第１の光源と前記第２の光源とが上下方向に並んで配置されていることを特徴とする請求項９に記載の車両用灯具。 The vehicle lamp according to claim 9, characterized in that, when the light source unit is attached to the lamp body, the first light source and the second light source are arranged side by side in the vertical direction.
PCT/JP2023/044892 2022-12-16 2023-12-14 Light-source unit and vehicle lamp WO2024128289A1 (en)

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Publication number Priority date Publication date Assignee Title
JP2010040502A (en) * 2007-11-29 2010-02-18 Momo Alliance Co Ltd Lighting system
JP2014115345A (en) * 2012-12-06 2014-06-26 Denso Corp Display device
WO2016158423A1 (en) * 2015-03-31 2016-10-06 株式会社小糸製作所 Light source unit and vehicle lamp fitting
JP2020047478A (en) * 2018-09-19 2020-03-26 株式会社小糸製作所 Vehicular lighting fixture and manufacturing method of vehicular lighting fixture
JP2022157309A (en) * 2021-03-31 2022-10-14 市光工業株式会社 Vehicular lighting fixture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010040502A (en) * 2007-11-29 2010-02-18 Momo Alliance Co Ltd Lighting system
JP2014115345A (en) * 2012-12-06 2014-06-26 Denso Corp Display device
WO2016158423A1 (en) * 2015-03-31 2016-10-06 株式会社小糸製作所 Light source unit and vehicle lamp fitting
JP2020047478A (en) * 2018-09-19 2020-03-26 株式会社小糸製作所 Vehicular lighting fixture and manufacturing method of vehicular lighting fixture
JP2022157309A (en) * 2021-03-31 2022-10-14 市光工業株式会社 Vehicular lighting fixture

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