CN117836556A - Lamp for vehicle - Google Patents
Lamp for vehicle Download PDFInfo
- Publication number
- CN117836556A CN117836556A CN202280057012.0A CN202280057012A CN117836556A CN 117836556 A CN117836556 A CN 117836556A CN 202280057012 A CN202280057012 A CN 202280057012A CN 117836556 A CN117836556 A CN 117836556A
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- light guide
- heat sink
- lamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 abstract description 12
- 230000001105 regulatory effect Effects 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 8
- 239000003550 marker Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/19—Attachment of light sources or lamp holders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/27—Attachment thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/20—Direction indicator lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/55—Daytime running lights [DRL]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
A vehicle lamp is provided with: a first light source that emits light; a second light source that emits light; a first light guide body that guides light emitted from the first light source and irradiates the guided light; a second light guide body that guides light emitted from the second light source and irradiates light having a function different from that of the light irradiated from the first light guide body; and a light shielding wall located between the first light source and the second light source. Thus, the light emitted from the first light source is blocked by the light blocking wall from traveling toward the second light guide, and the light emitted from the second light source is blocked by the light blocking wall from traveling toward the first light guide.
Description
Technical Field
The present invention relates to the field of vehicle lamps and lanterns, and more particularly to a vehicle lamp and a vehicle lamp having a light guide body for guiding and radiating incident light in a predetermined direction.
Background
The following types exist in the vehicle lamp: a light source and a plurality of light guides are arranged in a lamp housing formed of a cover and a lamp housing, and light emitted from the light source is guided by the light guides and is irradiated from an irradiation surface of the light guides to the outside (for example, refer to patent document 1 and patent document 2).
In the vehicle lamp described in fig. 4 of patent document 1 and patent document 2, two light sources and two light guides are provided, light is incident on the first light guide from the first light source, light is incident on the first light guide from the second first light source, light emitted from the first light source is emitted to the outside from the emission surface of the first light guide, and light emitted from the second light source is emitted to the outside from the emission surface of the second light guide.
As described above, in the vehicle lamp provided with the light guide, since the light emission position (light source) is different from the light irradiation position (light guide irradiation surface) of the light to the outside, it is possible to achieve an improvement in the degree of freedom of design and to form a light distribution pattern having a high aesthetic appearance.
In addition, in the configuration in which two light guides are used to emit light, the light is guided by each light guide and irradiated to a desired position, so that the light can be irradiated to a wide area.
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2017-220412
Patent document 2: japanese patent application laid-open No. 2017-183143
Disclosure of Invention
Problems to be solved by the invention
However, in the case of a configuration using two light guides as described above, when light having a function different from that of one light guide is irradiated from the other light guide, for example, the following may be used: light as a turn signal lamp indicating the traveling direction of the vehicle is irradiated from one light guide, and light as a marker lamp indicating the presence and width direction of the vehicle is irradiated from the other light guide.
In such a case, there is a problem that, when light other than the light that is originally incident is incident on the light guide having a different function, the functionality is lowered, and an appropriate irradiation state of the light cannot be ensured.
Therefore, an object of the present invention is to prevent a decrease in functionality and to ensure an appropriate irradiation state of light.
Means for solving the problems
The vehicle lamp according to the present invention includes: a first light source that emits light; a second light source that emits light; a first light guide body that guides light emitted from the first light source and irradiates the guided light; a second light guide that guides light emitted from the second light source and irradiates light having a function different from that of the light irradiated from the first light guide; and a light shielding wall located between the first light source and the second light source.
Thus, the light emitted from the first light source travels toward the second light guide body and is blocked by the light blocking wall, and the light emitted from the second light source travels toward the first light guide body and is blocked by the light blocking wall.
Effects of the invention
According to the present invention, since the light emitted from the first light source travels toward the second light guide body and is blocked by the light blocking wall, the light emitted from the second light source travels toward the first light guide body and is blocked by the light blocking wall, the reduction of the functionality can be prevented and the appropriate irradiation state of the light can be ensured.
Drawings
Fig. 1 is a view showing an embodiment of a vehicle lamp according to the present invention together with fig. 2 to 8, and this view is an exploded perspective view of the vehicle lamp.
Fig. 2 is a plan view of the vehicle lamp.
Fig. 3 is a perspective view showing a state in which the identification light unit is partially omitted.
Fig. 4 is an exploded perspective view showing a state in which the identification light unit is partially omitted.
Fig. 5 is a view showing the positioning concave portion of the heat sink and the positioning convex portion of the light shielding member.
Fig. 6 is a front view showing the heat sink and the circuit board.
Fig. 7 is a front view showing a state in which the position of the light guide is restricted by the holding tube portion of the light shielding member.
Fig. 8 is a cross-sectional view showing a positional relationship between the light guide and the light source.
Detailed Description
A mode for carrying out the vehicle lamp according to the present invention will be described below with reference to the drawings.
The vehicle lamp 1 is mounted on, for example, both right and left end portions of a front end portion of a vehicle body, and functions as a so-called combination lamp that functions as a vehicle headlight and a vehicle sign lamp. However, the vehicle lamp 1 is not limited to the combination lamp, and may be any one of a single lamp functioning as a vehicle headlamp, a single lamp functioning as a vehicle sign lamp, and a combination lamp if the lamp has a structure including a plurality of light sources and a plurality of light guides.
The following embodiment will be described with reference to a vehicle lamp 1 as an example, and the vehicle lamp 1 is used as a combination lamp having functions of a headlight, a turn signal lamp, a daytime running light, and an outline marker lamp.
The following describes the direction of the vehicle provided with the vehicle lamp 1 with respect to the front-rear direction, the up-down direction, and the left-right direction. However, the directions of the front, rear, up, down, left, and right shown below are for convenience of description, and the implementation of the present invention is not limited to these directions.
The vehicle lamp 1 includes a lamp housing 2 having an opening at a position extending laterally from the front, and a cover 3 closing the opening of the lamp housing 2 (see fig. 1 and 2). The lamp housing 4 is composed of a lamp housing 2 and a cover 3, and the inner space of the lamp housing 4 is formed as a lamp chamber.
The lamp housing 4 is provided as a main portion 4a, the main portion 4a being inclined so as to gradually displace rearward from the inside to the outside in the left-right direction as a portion other than the end portion on the outside in the left-right direction, and the lamp housing 4 is provided as an outer end portion 4b, the outer end portion 4b being formed in a shape protruding substantially rearward from the main portion 4a at the end portion on the outside in the left-right direction.
The lamp housing 2 is provided with a holding projection 5 (see fig. 1) at a portion on the inner side in the lateral direction. The holding projection 5 is formed in a shape protruding substantially laterally inside the lamp housing 4, and has a holding groove 5a opening laterally and frontward.
The lamp housing 2 has a mounting hole 2a formed therein so as to pass through the outer end thereof in the lateral direction. In the lamp housing 2, a bracket mounting portion 6 is provided below the mounting hole 2a. The lamp housing 2 is provided with three mechanism coupling parts, not shown, and each of the mechanism coupling parts is provided with a mechanism constituting part constituting a calibration mechanism to be described later.
A bracket 7 is mounted on the bracket mounting portion 6. The bracket 7 has a holding portion 8 protruding substantially forward at an upper end portion. The holding portion 8 has a holding groove 8a penetrating in the left-right direction and opening forward.
A headlight unit 9 functioning as a headlight is disposed inside the main portion 4a of the lamp housing 4. The headlight unit 9 includes a holder 10, a plurality of light irradiation units 11, and a lamp housing 12.
The holder 10 includes, for example, a body portion 10a formed in a laterally long shape, supported portions 10b, 10b protruding from the body portion 10a in a predetermined direction, and restricted protrusions 10c, 10c protruding to the left or right. The supported portions 10b, 10b of the holder 10 constitute mechanism constituting portions 13, 13 of the alignment mechanism, respectively, and are supported to be tiltable in the up-down direction and the left-right direction by the lamp housing 2 via, for example, two adjusting screws, one pivot point portion, and the like. The mechanism components 13, 13 are respectively connected to the mechanism coupling portions of the lamp housing 2 in a rotatable state or the like.
Therefore, the headlamp unit 9 is tilted in the up-down direction by rotating one of the adjustment screws with the pivot point portion as a fulcrum, and is tilted in the left-right direction by rotating the other of the adjustment screws with the pivot point portion as a fulcrum.
One restricted projection 10c of the holder 10 is inserted into the holding groove 5a of the holding projection 5 provided to the lamp housing 2, and the other restricted projection 10c of the holder 10 is inserted into the holding groove 8a of the holding portion 8 mounted to the bracket 7 of the lamp housing 2. The upper and lower widths of one of the restricted projections 10c are substantially the same as the upper and lower widths of the holding groove 5a, and the upper and lower widths of the other of the restricted projections 10c are substantially the same as the upper and lower widths of the holding groove 8a. Therefore, for example, when vibration or the like generated during traveling of the vehicle is transmitted to the headlight unit 9, the displacement in the up-down direction of the headlight unit 9 is suppressed by the holding projection 5 and the holding portion 8, and the light distribution pattern of the light irradiated to the outside from the light irradiation portion 11 of the headlight unit 9 is less likely to be disturbed, and the light can be irradiated in an appropriate light distribution pattern regardless of the generation of vibration during traveling of the vehicle.
Further, since the restricted projections 10c and 10c are not fixed to the holding projection 5 of the lamp housing 2 or the holding portion 8 of the bracket 7, the headlamp unit 9 can be smoothly tilted with respect to the lamp housing 2 during the alignment adjustment, the alignment adjustment of the headlamp unit 9 is not hindered, and light can be irradiated in an appropriate light distribution pattern regardless of the occurrence of vibration during the running of the vehicle.
In the above, the example in which one of the restricted projections 10c is inserted into the holding projection 5 which is a part of the lamp housing 2 and the other restricted projection 10c is inserted into the bracket 7 attached to the lamp housing 2 is shown, but the displacement of the head lamp unit 9 may be suppressed by a structure in which both of the restricted projections 10c and 10c are inserted into a part of the lamp housing 2, or the displacement of the head lamp unit 9 may be suppressed by a structure in which both of the restricted projections 10c and 10c are inserted into a member attached to the lamp housing 2.
The light irradiation section 11 includes, for example, a light source, a mirror, a projection lens, and the like. The light irradiation units 11, 11 are mounted and held on the holder 10 in a state of being separated from each other.
The light irradiation units 11 are provided in two, for example, one serving as a light irradiation unit 11 for low beam and the other serving as a light irradiation unit 11 for high beam. Therefore, when the low beam is irradiated, only one light irradiation unit 11 irradiates light, and when the high beam is irradiated, both the one light irradiation unit 11 and the other light irradiation unit 11 irradiate light.
The number of light irradiation units 11 is not limited to two, and the number of light irradiation units 11 is arbitrary. In addition, in the vehicle lamp 1, other types of light irradiation units 11 may be used in addition to the light irradiation unit 11 for low beam and the light irradiation unit 11 for high beam. As the other light irradiation unit 11, for example, a type that functions as a so-called ADB (adaptive driving beam system, adaptive high beam system) that has a plurality of light sources and controls the turning-on and turning-off of each light source according to the existence of a oncoming vehicle, a preceding vehicle, a pedestrian, or the like can be used.
Two arrangement holes are formed in the lamp housing 12 so as to be separated from each other in the left-right direction. The lamp housing 12 is attached to the holder 10 from the front side. In a state where the lamp housing 12 is attached to the holder 10, a part of the light irradiation portions 11, 11 are disposed in the disposition holes, respectively, and a part of the disposition holes not disposed in the light irradiation portions 11, 11 is shielded from the front by the lamp housing 12.
Inside the lamp housing 4, a marker lamp unit 14 is disposed at a position extending from the outer end 4b to the front end of the main portion 4a (see fig. 1 and 2). The marker light unit 14 includes a heat sink 15, a circuit board 16, a first light source 17, a second light source 18, a light shielding member 19, a first light guide 20, and a second light guide 21 (see fig. 1, 3, and 4).
Each portion of the heat sink 15 is integrally formed of a metal material (see fig. 3 and 4). The heat sink 15 has a plate-shaped substrate mounting portion 22 facing in the front-rear direction, heat sink portions 23, 23 protruding rearward from the substrate mounting portion 22, and a substantially annular peripheral wall portion 24 protruding forward from the substrate mounting portion 22.
A positioning pin 25, a positioning portion 26, and a light shielding wall 27 protrude from the front surface of the substrate mounting portion 22. The positioning portion 26 is provided at a position continuous with the inner peripheral surface of the peripheral wall portion 24. The light shielding wall 27 is located between the positioning pin 25 and the positioning portion 26, and is formed in an arc shape, for example.
In the peripheral wall portion 24, positioning recesses 28, 28 are formed so as to be separated from each other in the circumferential direction. The positioning concave portion 28 is formed by a first restricting surface 28a facing forward, second restricting surfaces 28b, 28b continuous at both ends in the circumferential direction of the first restricting surface 28a and orthogonal to the first restricting surface 28a, and guide surfaces 28c, 28c continuous at the distal ends of the second restricting surfaces 28b, 28b and gradually inclined in the direction separating from each other with the forward facing direction (refer to fig. 5).
The peripheral wall 24 is provided with engagement projections 24a, 24a protruding outward in a circumferential direction (see fig. 3 and 4).
The heat sink 15 is attached to the lamp housing 2 by, for example, screw fixation or the like in a state where the peripheral wall portion 24 is inserted into the attachment hole 2a of the lamp housing 2 from the rear. The substrate mounting portion 22 and the heat sink portions 23, … are located at the rear side of the lamp housing 2 in a state where the heat sink 15 is mounted to the lamp housing 2.
The circuit board 16 is formed in a disk shape facing in the front-rear direction, for example, and a circuit, not shown, is formed on the front surface of the circuit board 16. The circuit board 16 has insertion holes 16a and positioning holes 16b formed therethrough in the front-rear direction. In the circuit board 16, a positioning notch 16c is formed in an outer peripheral portion.
The positioning pins 25 and the positioning portions 26 are inserted into the positioning holes 16b and the positioning cutouts 16c of the circuit board 16, respectively, so that the circuit board 16 is positioned on the heat sink 15 and attached to the heat sink 15 by screw fixation or the like (see fig. 6). The circuit board 16 is positioned inside the peripheral wall portion 24 in a state of being mounted on the heat sink 15, and the light shielding wall 27 of the heat sink 15 is inserted into the insertion hole 16 a.
The first light source 17 and the second light sources 18, 18 are mounted on the front surface of the circuit board 16, and are connected to the circuit. The first light source 17 is for example used for turn signal lights and the second light sources 18, 18 are for example used for daytime running lights as well as for silhouettes. In the case where the second light sources 18, 18 are used as daytime running lights, light having a higher luminance than that in the case of being used as a marker light is emitted from the second light sources 18, 18.
The first light source 17 and the second light source 18 may be a single light source or a plurality of light sources. In addition, although two second light sources 18 are provided, the number of second light sources 18 is arbitrary.
The light shielding wall 27 is located between the first light source 17 and the second light sources 18, 18 mounted on the circuit board 16 in a state where the circuit board 16 is mounted on the heat sink 15. The first light source 17 and the one second light source 18 sandwich the light shielding wall 27 in the vicinity of the light shielding wall 27 and are located on the opposite side, and the first light source 17 is located inside the light shielding wall 27 formed in an arc shape.
As described above, in the vehicle lamp 1, the light blocking wall 27 is located between the first light source 17 and the second light sources 18 and 18, and therefore, the light emitted from the first light source 17 is blocked by the light blocking wall 27 and hardly goes to the second light sources 18 and 18, and the light emitted from the second light sources 18 and 18 is blocked by the light blocking wall 27 and hardly goes to the first light source 17.
The light shielding material 19 is formed integrally with a resin material, for example, and includes an annular frame portion 29, a base plate portion 30 continuous at a portion near the front end of the frame portion 29, substantially cylindrical holding tube portions 31, 31 continuous at the base plate portion 30, and elastically deformable engaging portions 32, 32 protruding rearward from the frame portion 29.
In the frame portion 29, positioning projections 33, 33 protruding rearward are provided apart from each other in the circumferential direction. The positioning protrusion 33 has a first restricted surface 33a facing rearward, and second restricted surfaces 33b, 33b (see fig. 5) continuous at both ends in the circumferential direction of the first restricted surface 33a and orthogonal to the first restricted surface.
The positioning projections 33, 33 of the light shielding member 19 are guided by the guide surfaces 28c, … and inserted into the positioning recesses 28, respectively, whereby the light shielding member 19 is positioned on the heat sink 15, and the engaging portions 32, 32 are engaged with the engaging projections 24a, respectively, whereby the light shielding member 19 is attached to the heat sink 15 (see fig. 3 and 5).
The first regulated surfaces 33a, 33a of the positioning projections 33, 33 of the light shielding member 19 are pressed from the front to the first regulated surfaces 28a, 28a of the positioning recesses 28, respectively, thereby performing positioning in the front-rear direction with respect to the heat sink 15. The second regulated surfaces 33b, … of the positioning projections 33, 33 of the light shielding member 19 are in contact with or in close proximity to the second regulating surfaces 28b, … of the positioning recesses 28, respectively, in the circumferential direction, whereby positioning with respect to the circumferential direction of the heat sink 15 is performed.
Specifically, the second restricted surfaces 33b, 33b of, for example, one positioning protrusion 33 contact the second restricting surfaces 28b, 28b of, respectively, one positioning recess 28 in the circumferential direction. Further, one second restricted surface 33b of the other one of the positioning projections 33 circumferentially contacts one second restricting surface 28b of the positioning recess 28, and the other second restricted surface 33b is circumferentially located close to the other second restricting surface 28b of the positioning recess 28. Further, one second restricted surface 33b of the other one of the positioning projections 33 is in contact with one second restricting surface 28b of the positioning recess 28 in the circumferential direction, and the other second restricted surface 33b is located close to the other second restricting surface 28b of the positioning recess 28 in the circumferential direction.
When the light shielding member 19 is attached to the heat sink 15, the engaging portion 32 slides on the engaging protrusion 24a to be elastically deformed, and the engaging portion 32 is elastically restored, so that the engaging protrusion 24a is engaged with the opening edge of the engaging hole 32a, whereby the light shielding member 19 is attached to the heat sink 15. At the same time, the light shielding member 19 is attached to the heat sink 15, and the light shielding member 19 is positioned to the heat sink 15.
As described above, the engagement portion 32 is elastically engaged with the engagement projection 24a, and the light shielding material 19 is attached to the heat sink 15, so that the light shielding material 19 can be easily and quickly attached to the heat sink 15 without performing an operation such as screw fixation when the light shielding material 19 is attached to the heat sink 15.
Further, since the light shielding material 19 is attached to the heat sink 15 and the light shielding material 19 is positioned to the heat sink 15 at the same time, the attaching operation of attaching the light shielding material 19 to the heat sink 15 and the positioning operation of positioning the light shielding material to the heat sink 15 do not need to be performed as various operations, and it is possible to achieve improvement in operability and rapidity of operation.
The first light guide 20 is formed in a substantially cylindrical shape, for example, and is formed in a shape extending along the inner surface of the cover 3 (see fig. 1). One end portion in the longitudinal direction of the first light guide 20 is provided as a light incident portion 34, and an end surface of the light incident portion 34 is formed as a light incident surface 34a. In the first light guide 20, a total reflection step, not shown, is formed in a portion other than a portion on the rear surface. Therefore, the light that is incident from the light incident surface 34a and guided inside the first light guide 20 is internally reflected by the total reflection step and is irradiated substantially toward the front.
The second light guide 21 has, for example, two substantially cylindrical light guide portions 35 and a plurality of connecting portions 36 connecting the light guide portions 35 and 35, and is formed in a shape in which the light guide portions 35 and 35 extend along the inner surface of the cover 3. The second light guide 21 may have a structure having only one light guide 35, or may have a structure having three or more light guide 35.
One ends of the light guide portions 35, 35 of the second light guide body 21 in the longitudinal direction are provided as light incident portions 37, respectively, and end surfaces of the light incident portions 37, 37 are formed as light incident surfaces 37a, respectively. The light guide portions 35 and 35 are each formed with a total reflection step, not shown, in a portion other than a portion on the rear surface. Therefore, the light that enters from the light incidence surfaces 37a, 37a and is guided inside the light guide portions 35, 35 is reflected by the inner surface by the total reflection step, and is irradiated substantially toward the front.
The light incident portion 34 of the first light guide 20 is inserted into the holding tube portion 31 of the light shielding member 19, and the position regulating portions 31a, 31a are in contact with or in proximity to the outer peripheral surface of the light incident portion 34, and the position in the direction orthogonal to the longitudinal direction is regulated by the position regulating portions 31a, 31a (see fig. 7). The position of the first light guide 20 in the longitudinal direction is regulated by another member such as a mirror, not shown, and is held by the light shielding member 19.
The first light guide 20 is located at a position facing the first light source 17 (see fig. 8) having the light incident portion 34 mounted on the circuit board 16 while being held by the light shielding member 19. At this time, the light incident portion 34 is positioned inside the light shielding wall 27 formed in an arc shape.
The light incident portions 37, 37 of the light guide portions 35, 35 of the second light guide body 21 are inserted into the holding tube portions 31, 31 of the light shielding member 19, respectively, and the position regulating portions 31a, … are brought into contact with or close to the outer peripheral surfaces of the light incident portions 37, and the positions in the direction orthogonal to the longitudinal direction are regulated by the position regulating portions 31a, … (see fig. 7). The positions of the light guide portions 35, 35 in the longitudinal direction are respectively limited by other members such as a mirror, and are held by the light shielding member 19.
The light guide portions 35 and 35 are located at positions facing the second light sources 18 and 18 on which the light incident portions 37 and 37 are mounted on the circuit board 16, respectively, while being held by the light shielding member 19 (see fig. 8). At this time, the light incident portions 37, 37 are located at positions separated from the light incident portion 34 of the first light guide 20 by the light shielding wall 27.
In the vehicle lamp 1 configured as described above, when light is emitted from the first light source 17, the emitted light enters the first light guide 20 from the light incident surface 34a, is guided inside the first light guide 20, and is emitted substantially forward through the cover 3. At this time, light as a turn signal lamp is irradiated from the first light guide 20.
On the other hand, when light is emitted from the second light sources 18 and 18, the emitted light is incident on the light guide portions 35 and 35 of the second light guide body 21 from the light incident surfaces 37a and 37a, respectively, and is guided inside the light guide portions 35 and is irradiated substantially forward through the cover 3. At this time, light as a daytime running light or a marker light is irradiated from the second light guide 21. Therefore, light having a different function is irradiated from the first light guide 20 and the second light guide 21.
As described above, the vehicle lamp 1 includes: a first light guide 20 that guides light emitted from the first light source 17; a second light guide 21 that guides light emitted from the second light source 18 and emits light having a different function from that of the light emitted from the first light guide 20; and a light shielding wall 27 located between the first light source 17 and the second light source 18.
Therefore, the light emitted from the first light source 17 is blocked by the light blocking wall 27 from traveling toward the second light guide 21, and the light emitted from the second light source 18 is blocked by the light blocking wall 27 from traveling toward the first light guide 20. Thus, since the light emitted from the first light source 17 is less likely to enter the second light guide 21 and the light emitted from the second light source 18 is less likely to enter the first light guide 20, the light emitted from the first light source 17 is not irradiated from the first light guide 20 and the light emitted from the second light source 18 is not irradiated from the first light guide 20, and thus, a decrease in functionality can be prevented and an appropriate irradiation state of the light can be ensured.
A heat sink 15 is provided, and the heat sink 15 has a board mounting portion 22 on which the circuit board 16 is mounted, and an insertion hole 16a is formed in the circuit board 16, and the light shielding wall 27 is inserted into the insertion hole 16 a.
Therefore, the light shielding wall 27 is located further inside than the outer periphery of the circuit board 16 and does not limit the mounting position of the first light source 17 and the second light source 18 on the circuit board 16, so that the light emitted from the first light source 17 can be prevented from being emitted to the second light guide 21 and the light emitted from the second light source 18 can be prevented from being emitted to the first light guide 20 while ensuring a high degree of freedom in design regarding the positions of the first light source 17, the second light source 18, the first light guide 20, and the second light guide 21.
Further, the light shielding wall 27 is provided as a part of the heat sink 15, and therefore, it is not necessary to provide the light shielding wall 27 as a member different from other members, and a reduction in the number of components can be achieved.
Further, a light shielding member 19 for holding the first light guide 20 and the second light guide 21 is provided, and the light shielding member 19 is attached to the heat sink 15 in a state of being positioned on the heat sink 15.
Therefore, since the light shielding member 19 is attached in a state where the light shielding member 19 that holds the first light guide 20 and the second light guide 21 is positioned on the heat sink 15 on which the circuit board 16 is attached, high positional accuracy with respect to the first light source 17 and the second light source 18 of the first light guide 20 and the second light guide 21 can be ensured.
Further, an end portion of the first light guide 20 located at a position opposed to the first light source 17 is provided as a light incident portion 34, and at least a part of the light incident portion 34 is provided in a state covered from the surrounding by the light shielding wall 27.
Therefore, the light entering the first light guide 20 travels toward the second light guide 21 and the light entering the second light guide 21 travels toward the first light guide 20 and is blocked by the light blocking wall 27, so that an appropriate on/off state of the light in the vehicle lamp 1 can be ensured.
Description of the reference numerals
1: a lamp for a vehicle;
15: a heat sink;
16: a circuit substrate;
16a: an insertion hole;
17: a first light source;
18: a second light source;
19: a light shielding member;
20: a first light guide;
21: a second light guide;
22: a substrate mounting portion;
27: a light shielding wall;
34: a light incidence part.
Claims (5)
1. A lamp for a vehicle, wherein,
the vehicle lamp includes:
a first light source that emits light;
a second light source that emits light;
a first light guide body that guides light emitted from the first light source and irradiates the guided light;
a second light guide that guides light emitted from the second light source and irradiates light having a function different from that of the light irradiated from the first light guide; and
a light shielding wall located between the first light source and the second light source.
2. The vehicular lamp according to claim 1, wherein,
the vehicle lamp includes:
a circuit board on which the first light source and the second light source are mounted; and
a heat sink having a substrate mounting portion on which the circuit substrate is mounted,
an insertion hole is formed in the circuit substrate,
the light shielding wall is in a state of being inserted into the insertion hole.
3. The vehicular lamp according to claim 2, wherein,
the shielding wall is provided as a part of the heat sink.
4. The vehicular lamp according to claim 2 or 3, wherein,
the vehicle lamp is provided with a light shielding member for holding the first light guide body and the second light guide body,
the light shielding member is mounted to the heat sink in a state of being positioned at the heat sink.
5. The vehicular lamp according to any one of claims 1 to 4, wherein,
an end portion of the first light guide body located at a position opposite to the first light source is provided as a light incident portion,
at least a part of the light incident portion is covered by the light shielding wall from the periphery.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-136595 | 2021-08-24 | ||
| JP2021136595 | 2021-08-24 | ||
| PCT/JP2022/030597 WO2023026865A1 (en) | 2021-08-24 | 2022-08-10 | Lighting fixture for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117836556A true CN117836556A (en) | 2024-04-05 |
Family
ID=85323197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280057012.0A Pending CN117836556A (en) | 2021-08-24 | 2022-08-10 | Lamp for vehicle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2023026865A1 (en) |
| CN (1) | CN117836556A (en) |
| WO (1) | WO2023026865A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5535252B2 (en) * | 2012-02-08 | 2014-07-02 | シャープ株式会社 | Light projecting device and light guide member used therefor |
| JP6948156B2 (en) * | 2017-05-23 | 2021-10-13 | スタンレー電気株式会社 | Vehicle lighting |
| JP7029234B2 (en) * | 2017-06-16 | 2022-03-03 | 株式会社小糸製作所 | Light guide device |
| CN210035343U (en) * | 2018-12-12 | 2020-02-07 | Sl株式会社 | Vehicle lamp |
-
2022
- 2022-08-10 WO PCT/JP2022/030597 patent/WO2023026865A1/en active Application Filing
- 2022-08-10 CN CN202280057012.0A patent/CN117836556A/en active Pending
- 2022-08-10 JP JP2023543805A patent/JPWO2023026865A1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2023026865A1 (en) | 2023-03-02 |
| WO2023026865A1 (en) | 2023-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107013858B (en) | vehicle headlamp | |
| US7165871B2 (en) | Lamp | |
| KR100646641B1 (en) | Light-emitting module and lamp | |
| US10393337B2 (en) | Vehicular headlamp | |
| KR20040073349A (en) | Vehicular headlamp | |
| EP2228588A2 (en) | Vehicle headlamp | |
| EP2949988B1 (en) | Vehicle lighting unit, and vehicle headlight | |
| JP2001118407A5 (en) | ||
| CN108224352B (en) | Lamp fitting | |
| JP2013243068A (en) | Vehicle headlight | |
| US8485704B2 (en) | Lamp unit and vehicle lamp | |
| JP5950386B2 (en) | Mounting method of vehicle headlamp and projection lens | |
| CN110715263A (en) | Vehicle lamp | |
| US8177403B2 (en) | Vehicle headlamp | |
| CN110388615B (en) | Vehicle lamp | |
| CN109855045B (en) | Vehicle lamp | |
| CN117836556A (en) | Lamp for vehicle | |
| CN112432128B (en) | Vehicle lamp | |
| US6796692B2 (en) | Vehicle headlamp with solenoid-actuated movable shade | |
| CN210860958U (en) | Vehicle lamp | |
| CN115335631A (en) | Vehicle lamp | |
| WO2019208154A1 (en) | Lighting tool for vehicle | |
| WO2023053907A1 (en) | Vehicle lamp | |
| CN112443809B (en) | Lamp unit | |
| JP2024080337A (en) | Vehicle headlight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |