CN112524564A - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
CN112524564A
CN112524564A CN202010800812.XA CN202010800812A CN112524564A CN 112524564 A CN112524564 A CN 112524564A CN 202010800812 A CN202010800812 A CN 202010800812A CN 112524564 A CN112524564 A CN 112524564A
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CN
China
Prior art keywords
light
light source
reflection
lamp
reflecting
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.)
Granted
Application number
CN202010800812.XA
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Chinese (zh)
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CN112524564B (en
Inventor
吉野公明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koito Manufacturing Co Ltd
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Koito Manufacturing Co Ltd
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Publication date
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Publication of CN112524564A publication Critical patent/CN112524564A/en
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Publication of CN112524564B publication Critical patent/CN112524564B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—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
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-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
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • 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
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/20—Multi-color single source or LED matrix, e.g. yellow blinker and red brake lamp generated by single lamp
    • 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
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • 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)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The present invention relates to a vehicle lamp configured to cause light emitted from a first light source and a second light source having different emission colors to enter a light guide and to be emitted toward the front of the lamp, wherein when either one of the first light source and the second light source is turned on, an emission portion of the light guide can be caused to appear to emit light uniformly in the left-right direction. The light guide is configured such that light from the first light source and the second light source incident from the incident portion is reflected upward by the first reflection portion and then reflected forward of the lamp by the second reflection portion. The first reflection unit is configured to include a first reflection region for reflecting light from the first light source and a second reflection region for reflecting light from the second light source. The second reflection unit is configured such that a plurality of third reflection regions for reflecting the light reflected from the first reflection region and a plurality of fourth reflection regions for reflecting the light reflected from the second reflection region are alternately arranged in the left-right direction.

Description

Vehicle lamp
Technical Field
The present invention relates to a vehicle lamp provided with a light guide.
Background
Conventionally, there is known a vehicle lamp configured to cause light emitted from a first light source and a second light source having different emission colors to enter a light guide and to be emitted to the front of the lamp.
As such a vehicle lamp, patent document 1 describes a configuration in which an incident portion into which light from a first light source and a second light source is incident is formed on a rear surface of a light guide body, and the first light source and the second light source are arranged in line on a lamp rear side of the incident portion.
The vehicle lamp described in patent document 1 has a configuration in which the first light source is turned on in the winker lamp lighting mode and the second light source is turned on in the outline lamp lighting mode.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2019-110049
Disclosure of Invention
Problems to be solved by the invention
In the vehicle lamp described in the above-mentioned "patent document 1", the emission pattern of the emission portion of the light guide body is different between when the first light source is turned on and when the second light source is turned on, but in order to improve the appearance of the vehicle lamp, it is preferable that the emission portion of the light guide body is uniformly emitted in the left-right direction when any one of the first light source and the second light source is turned on.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicle lamp configured to cause light emitted from a first light source and a second light source having different emission colors to enter a light guide body and to be emitted toward the front of the lamp, and to enable an emission portion of the light guide body to appear to emit light uniformly in the left-right direction when any one of the first light source and the second light source is turned on.
Means for solving the problems
The present invention has been made to achieve the above object by studying the structure of the light guide.
That is, the vehicle lamp according to the present invention includes a first light source and a second light source having different emission colors from each other, and a light guide body configured to allow light emitted from the first light source and the second light source to enter and emit the light toward the front of the lamp,
the light guide includes an incident portion into which light from the first light source and the second light source is incident, a first reflecting portion that reflects upward or downward light from the first light source and the second light source incident from the incident portion, a second reflecting portion that reflects forward light from the first light source and the second light source reflected by the first reflecting portion toward a lamp, and an emitting portion that emits forward light from the first light source and the second light source reflected by the second reflecting portion toward the lamp,
the first reflection unit includes a first reflection region for reflecting light from the first light source and a second reflection region for reflecting light from the second light source,
the second reflection unit is configured such that a plurality of third reflection regions for reflecting the light from the first light source reflected by the first reflection region and a plurality of fourth reflection regions for reflecting the light from the second light source reflected by the second reflection region are alternately arranged in a left-right direction.
The "first reflection unit" is not particularly limited in specific arrangement, shape of reflection surface, and the like of each of the first reflection region and the second reflection region as long as the "first reflection unit" includes the first reflection region for reflecting light from the first light source and the second reflection region for reflecting light from the second light source.
The "second reflection unit" is not particularly limited in specific number, specific arrangement, shape of reflection surface, and the like of the plurality of third reflection regions and the plurality of fourth reflection regions, as long as the plurality of third reflection regions for reflecting the light from the first light source reflected by the first reflection region and the plurality of fourth reflection regions for reflecting the light from the second light source reflected by the second reflection region are alternately arranged in the left-right direction.
Effects of the invention
The vehicle lamp according to the present invention is configured such that light emitted from a first light source and a second light source having different emission colors is incident on a light guide body and emitted toward the front of the lamp, the light guide body is configured such that a first reflection portion for reflecting light from the first light source and the second light source incident from an incident portion upward or downward is provided with a first reflection region for reflecting light from the first light source and a second reflection region for reflecting light from the second light source, and a plurality of third reflection regions for reflecting light from the first light source reflected by the first reflection region and a plurality of fourth reflection regions for reflecting light from the second light source reflected by the second reflection region are alternately arranged in the left-right direction as a configuration of a second reflection portion for reflecting light from the first light source reflected by the first reflection region toward the front of the lamp, therefore, the following operational effects can be obtained.
That is, when the first light source is turned on, the plurality of third reflective regions can be made to appear to emit light at a predetermined interval in the left-right direction, and when the second light source is turned on, the plurality of fourth reflective regions can be made to appear to emit light at a predetermined interval in the left-right direction. Therefore, when any one of the first light source and the second light source is turned on, the emission portion of the light guide can be made to appear to emit light uniformly in the left-right direction.
As described above, according to the present invention, in the vehicle lamp configured to cause light emitted from the first light source and the second light source having different emission colors to be incident on the light guide and to be emitted toward the front of the lamp, when any one of the first light source and the second light source is turned on, the emission portion of the light guide can be made to appear to emit light uniformly in the left-right direction.
In the above configuration, further, in addition to the configuration in which the first light source and the second light source are arranged in a positional relationship shifted in the vertical direction and the horizontal direction, if the first reflection region and the second reflection region are arranged in a positional relationship shifted in the front-rear direction of the lamp and in a positional relationship partially overlapping in the horizontal direction as the configuration of the first reflection portion, it is possible to efficiently reflect the light from the first light source toward the plurality of third reflection regions in the first reflection region, and to efficiently reflect the light from the second light source toward the plurality of fourth reflection regions in the second reflection region. In this case, the light guide can be made to emit light more uniformly in the left-right direction.
In the above configuration, further, when the plurality of reflective elements are arranged in a stepwise manner in the left-right direction on both the left and right sides of the first light source as the configuration of the first reflective region and the plurality of reflective elements are arranged in a stepwise manner in the left-right direction on both the left and right sides of the second light source as the configuration of the second reflective region, it is possible to reflect the light from the first light source toward the plurality of third reflective regions with high accuracy in the first reflective region and to reflect the light from the second light source toward the plurality of fourth reflective regions with high accuracy in the second reflective region. In this case, the light guide can be made to emit light more uniformly in the left-right direction.
In the above-described configuration, when the plurality of reflecting elements are arranged in a stepwise manner in the vertical direction as the configuration of each third reflecting region and the plurality of reflecting elements are arranged in a stepwise manner in the vertical direction as the configuration of each fourth reflecting region, it is possible to reflect the light from the first light source reflected by the first reflecting region with high accuracy in each third reflecting region and to reflect the light from the second light source reflected by the second reflecting region with high accuracy in each fourth reflecting region. In this case, the light guide can be made to emit light uniformly in the vertical direction.
In the above configuration, further, when the plurality of third reflective regions and the plurality of fourth reflective regions are arranged in a positional relationship shifted in the front-rear direction of the lamp as the configuration of the second reflective portion, the positional relationship in the up-down direction between the portion that appears brightly luminous in each third reflective region and the portion that appears brightly luminous in each fourth reflective region can be adjusted by the relative displacement amount in the front-rear direction of the lamp between the third reflective regions and the fourth reflective regions. In this case, the light source can be turned on at a position where the light source is not turned on, and the light source can be turned on at a position where the light source is turned off.
Drawings
Fig. 1 is a front view showing a vehicle lamp according to an embodiment of the present invention.
FIG. 2 (a) is a sectional view taken along line IIa-IIa of FIG. 1, and FIG. 2 (b) is a sectional view taken along line IIb-IIb of FIG. 1.
Fig. 3 is a rear view showing a main part of the lamp unit of the vehicle lamp.
Fig. 4 is a perspective view showing a main part of the light guide of the lamp unit as viewed obliquely downward from behind the lamp.
Fig. 5 (a) is a front view showing the lamp unit in the position of the outline marker lamp lighting mode, and fig. 5 (b) is a front view showing the lamp unit in the position of the front winker lamp lighting mode.
Fig. 6 (a) is a view similar to fig. 2 (a) showing a lamp unit according to a first modification of the above-described embodiment, and fig. 6 (b) is a view similar to fig. 2 (a) showing a lamp unit according to a second modification of the above-described embodiment.
Description of the reference numerals
10: a vehicular lamp; 12: a lamp body; 14: a light-transmitting cover; 20. 120, 220: a lamp unit; 22: a first light source; 24: a second light source; 26: a substrate; 30. 130, 230: a light guide; 30A, 130A, 230A: a vertical plate portion; 30B, 130B: a horizontal plate portion; 32. 132, 232: an injection section; 32A: a central injection zone; 32B: an annular injection zone; 32C: an annular reflective region; 34. 134, 234: a first reflection section; 34A: a first reflective region; 34A1, 34B 1: an upper reflection part; 34A1s, 34A3s, 34B1s, 34B3s, 36As, 36 Bs: a reflective element; 34A2, 34B 2: a side reflection part; 34A3, 34B 3: a step-shaped reflection section; 34B: a second reflective region; 36. 136, 236: a second reflection section; 36A: a third reflective region; 36B: a fourth reflective region; 38. 138, 238: an injection section; 138 s: a diffusion lens element; 230B: an inclined plate portion; ax1, Ax 2: an axis.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 is a front view showing a vehicle lamp 10 according to an embodiment of the present invention. FIG. 2 (a) is a sectional view taken along line IIa-IIa of FIG. 1, and FIG. 2 (b) is a sectional view taken along line IIb-IIb of FIG. 1.
In these figures, the direction indicated by X is the "front" of the vehicle lamp 10 (also "front" as the vehicle), the direction indicated by Y is the "left direction" (the "right direction" in the front view of the lamp), and the direction indicated by Z is the "upper direction". The same applies to figures other than these figures.
The vehicle lamp 10 according to the present embodiment is a lamp provided at a front end portion of a vehicle, and has functions of a front winker and a position light.
The vehicle lamp 10 is configured such that a lamp unit 20 is assembled in a lamp chamber formed by a lamp body 12 and a transparent translucent cover 14 attached to a front end opening portion thereof.
The lamp unit 20 includes five first light sources 22 and four second light sources 24, and a light guide 30 configured to receive light emitted from the five first light sources 22 and the four second light sources 24 and emit the light toward the front of the lamp.
The first light sources 22 are white light emitting diodes that are turned on in the outline lamp lighting mode, and are arranged at equal intervals in the left-right direction (i.e., the vehicle width direction) with their light emitting surfaces facing the rear of the lamp.
On the other hand, each of the second light sources 24 is an amber light emitting diode that is turned on in the front winker lighting mode, and is arranged at equal intervals in the left-right direction with its light emitting surface facing the rear of the lamp.
The five first light sources 22 and the four second light sources 24 are arranged in a state of being alternately shifted by half pitch in the left-right direction. At this time, the four second light sources 24 are arranged in a state displaced upward with respect to the five first light sources 22.
The five first light sources 22 and the four second light sources 24 are supported on a common substrate 26. The base plate 26 is disposed to extend in the left-right direction along a vertical plane orthogonal to the front-rear direction of the lamp, and is supported by the lamp body 12 at both left and right ends thereof.
The light guide 30 is a colorless and transparent resin member (e.g., an acrylic resin member), and includes a vertical plate portion 30A extending along a vertical plane perpendicular to the front-rear direction of the lamp on the lamp rear side with respect to the substrate 26, and a horizontal plate portion 30B extending along a horizontal plane from the upper end position of the vertical plate portion 30A toward the front of the lamp. The light guide 30 is supported by the lamp body 12 via a support structure not shown.
The light guide 30 includes an incident portion 32 into which light emitted from the first light source 22 and the second light source 24 is incident, a first reflection portion 34 that reflects the light emitted from the first light source 22 and the second light source 24 incident from the incident portion 32 upward, a second reflection portion 36 that reflects the light emitted from the first light source 22 and the second light source 24 reflected by the first reflection portion 34 toward the front of the lamp, and an emitting portion 38 that emits the light emitted from the first light source 22 and the second light source 24 reflected by the second reflection portion 36 toward the front of the lamp.
First, the structure of the injection unit 32 will be described.
The incident portions 32 have the same configuration at five positions located directly behind the first light sources 22 (i.e., on the axis Ax1 extending in the front-rear direction of the lamp so as to pass through the light emission centers of the first light sources 22) and at four positions located directly behind the second light sources 24 (i.e., on the axis Ax2 extending in the front-rear direction of the lamp so as to pass through the light emission centers of the second light sources 24) on the front surface of the vertical plate portion 30A.
That is, each of the incident portions 32 includes a central incident region 32A into which light from the first light source 22 and the second light source 24 enters as light directed in a direction substantially parallel to the axes Ax1 and Ax2, an annular incident region 32B into which light from the first light source 22 and the second light source 24 enters as light directed in a direction away from the axes Ax1 and Ax2 around the central incident region 32A, and an annular reflecting region 32C which totally reflects light from the first light source 22 and the second light source 24 entering from the annular incident region 32B as light directed in a direction substantially parallel to the axes Ax1 and Ax 2.
The central incident region 32A is formed by a convex curved surface bulging toward the front side of the lamp with the axes Ax1, Ax2 as centers, the annular incident region 32B is formed by a conical surface slightly expanding toward the front side of the lamp with the axes Ax1, Ax2 as centers, and the annular reflecting region 32C is formed by a convex curved surface of revolution expanding toward the rear side of the lamp with the axes Ax1, Ax2 as centers.
Next, the structure of the first reflection unit 34 will be described.
Fig. 3 is a rear view showing a main part of the lamp unit 20. Fig. 4 is a perspective view showing a main part of the light guide 30 as viewed obliquely downward from behind the lamp.
As shown in fig. 3 and 4, the first reflection unit 34 includes a first reflection region 34A for reflecting the light from the first light source 22 incident from the incident unit 32, and a second reflection region 34B for reflecting the light from the second light source 24 incident from the incident unit 32.
The first reflection regions 34A are formed at five locations for the first light sources 22 on the rear surface of the vertical plate portion 30A, and the second reflection regions 34B are formed at four locations for the second light sources 24 on the rear surface of the vertical plate portion 30A.
Specifically, the first reflection region 34A is constituted by an upper reflection portion 34A1 that totally reflects light from the first light source 22 incident from an upper region of the incident portion 32 upward (specifically, in a direction substantially directly upward), a pair of left and right side reflection portions 34A2 that totally reflects light from the first light source 22 incident from a region other than the upper region of the incident portion 32 in both left and right directions, and a pair of left and right stepped reflection portions 34A3 that totally reflects light from the first light source 22 totally reflected by the pair of left and right side reflection portions 34A2 upward (specifically, in a direction substantially directly upward).
The upper reflection portion 34A1 is constituted by a plurality of reflection elements 34A1 s. The plurality of reflecting elements 34A1s are arranged in a stepped manner in three left and right rows in the front-rear direction of the lamp above the axis Ax 1. Each of the reflecting elements 34A1s is formed to extend in a long and narrow manner in the left-right direction.
The pair of left and right side reflecting portions 34a2 are formed by vertical surfaces formed so as to spread in a V shape toward the rear of the lamp.
The pair of left and right stepped reflecting portions 34A3 is formed of a plurality of reflecting elements 34A3s disposed on both left and right sides of the pair of left and right side reflecting portions 34a 2. The plurality of reflection elements 34A3s are formed of three pairs of left and right slopes arranged in a stepped manner in the left-right direction. The pair of left and right stepped reflection portions 34a3 constitute the lower end surface of the vertical plate portion 30A.
On the other hand, the second reflective region 34B is constituted by an upper reflective portion 34B1 constituted by a plurality of reflective elements 34B1s, a pair of left and right side reflective portions 34B2, and a pair of left and right stepped reflective portions 34B3 constituted by three left and right pairs of reflective elements 34B3 s.
The second reflective area 34B has the same structure as the first reflective area 34A. That is, the second reflection region 34B is arranged in a state shifted by half a pitch in the left-right direction with respect to the state in which the first reflection region 34A is shifted to the upper side and the lamp rear side.
In the vertical plate portion 30A, a portion where the second reflection region 34B is formed to be twice as thick as a portion where the first reflection region 34A is formed.
Next, the structure of the second reflection unit 36 will be described.
The second reflection unit 36 includes a plurality of third reflection regions 36A for reflecting the light from the first light source 22 reflected by the first reflection region 34A, and a plurality of fourth reflection regions 36B for reflecting the light from the second light source 24 reflected by the second reflection region 34B.
Each of the third reflective regions 36A and each of the fourth reflective regions 36B is formed in a vertically long rectangular shape in the front view of the lamp, and is alternately arranged in the left-right direction on the rear end surface of the horizontal plate portion 30B. At this time, each third reflection region 36A and each fourth reflection region 36B are formed to have the same lateral width, and each fourth reflection region 36B is arranged in a state of being shifted toward the lamp rear side with respect to each third reflection region 36A.
Each of the third reflective regions 36A has a structure in which a plurality of reflective elements 36As are arranged in a stepped manner in the vertical direction, and the light from the first light source 22 totally reflected by the first reflective region 34A is totally reflected toward the front of the lamp in each of the reflective elements 36 As.
Each of the fourth reflective regions 36B has a structure in which a plurality of reflective elements 36Bs are arranged in a stepwise manner in the vertical direction, and the light from the second light source 24 totally reflected by the second reflective region 34B is totally reflected toward the front of the lamp in each of the reflective elements 36 Bs.
Next, the structure of the injection unit 38 will be described.
The emitting portion 38 is formed of a single plane extending along a vertical plane orthogonal to the front-rear direction of the lamp. The light from the first light source 22 and the second light source 24 reflected by the second reflection portion 36 is directly emitted toward the front of the lamp.
As shown in fig. 3, the second reflection part 36 reflects the light from the first light sources 22 reflected by the first reflection regions 34A of the first reflection part 34 in nine third reflection regions 36A, and reflects the light from the second light sources 24 reflected by the second reflection regions 34B of the first reflection part 34 in nine fourth reflection regions 36B.
To achieve this, each of the first reflective regions 34A is configured to totally reflect the light from each of the first light sources 22 toward the third reflective region 36A located directly above the axis Ax1 and two adjacent third reflective regions 36A on both left and right sides thereof by adjusting the orientation of the plurality of reflective elements 34A1s constituting the upper reflective portion 34A1, and to totally reflect the light from each of the first light sources 22 toward the remaining six third reflective regions 36A by adjusting the orientation of the left and right three pairs of reflective elements 34A3s constituting the left and right pair of stepped reflective portions 34A 3.
Each of the second reflective regions 34B is configured to totally reflect the light from each of the second light sources 24 toward the fourth reflective region 36B located directly above the axis Ax2 and two adjacent fourth reflective regions 36B on both left and right sides thereof by adjusting the orientation of the plurality of reflective elements 34B1s constituting the upper reflective portion 34B1, and to totally reflect the light from each of the second light sources 24 toward the remaining six fourth reflective regions 36B by adjusting the orientation of the left and right three pairs of reflective elements 34B3s constituting the left and right pair of stepped reflective portions 34B 3.
Fig. 5 (a) is a front view showing the lamp unit 20 in the position of the outline marker lighting mode, and fig. 5 (b) is a front view showing the lamp unit 20 in the position of the front winker lighting mode.
As shown in fig. 5 (a), in the outline lamp lighting mode, by lighting the five first light sources 22, the plurality of third reflection regions 36A constituting the second reflection portion 36 of the light guide 30 emit white light at equal intervals, and the emission portion 38 of the light guide 30 appears to emit light uniformly in a vertical stripe shape.
On the other hand, as shown in fig. 5 (B), in the front winker lighting mode, the four second light sources 24 are turned on, so that the plurality of fourth reflection regions 36B constituting the second reflection portion 36 of the light guide 30 emit amber light at equal intervals, and the emission portion 38 of the light guide 30 uniformly emits light in a vertical stripe shape.
Next, the operation and effects of the present embodiment will be described.
The vehicle lamp 10 according to the present embodiment is configured such that light emitted from the first light source 22 and the second light source 24 having different emission colors is incident on the light guide 30 and emitted toward the front of the lamp, the light guide 30 is configured such that the first reflection portion 34 for reflecting the light from the first light source 22 and the second light source 24 incident from the incident portion 32 upward is provided with the first reflection region 34A for reflecting the light from the first light source 22 and the second reflection region 34B for reflecting the light from the second light source 24, and the plurality of third reflection regions 36A for reflecting the light from the first light source 22 reflected by the first reflection region 34A are alternately arranged in the left-right direction, And a plurality of fourth reflection regions 36B for reflecting the light from the second light source 24 reflected by the second reflection regions 34B, the following operational effects can be obtained.
That is, when the first light source 22 is turned on, the plurality of third reflective regions 36A can be made to appear to emit light at a predetermined interval in the left-right direction, and when the second light source 24 is turned on, the plurality of fourth reflective regions 36B can be made to appear to emit light at a predetermined interval in the left-right direction. Therefore, when any one of the first light source 22 and the second light source 24 is turned on, the emission portion 38 of the light guide 30 can be made to appear to emit light uniformly in the left-right direction.
As described above, according to the present embodiment, in the vehicle lamp 10 configured to inject the light emitted from the first light source 22 and the second light source 24 having different emission colors into the light guide 30 and emit the light toward the front of the lamp, when any one of the first light source 22 and the second light source 24 is turned on, the emission portion 38 of the light guide 30 can be made to appear to emit light uniformly in the left-right direction.
In this case, in the present embodiment, the first light sources 22 and the second light sources 24 are arranged in a positional relationship shifted in the vertical direction and the horizontal direction, and in addition, in the first reflection portion 34, the first reflection regions 34A and the second reflection regions 34B are arranged in a positional relationship shifted in the front-rear direction of the lamp and in a positional relationship partially overlapping in the horizontal direction, so that the light from the first light sources 22 can be efficiently reflected toward the plurality of third reflection regions 36A in the first reflection regions 34A, and the light from the second light sources 24 can be efficiently reflected toward the plurality of fourth reflection regions 36B in the second reflection regions 34B. This makes it possible to make the emission portion 38 of the light guide 30 appear to emit light more uniformly in the left-right direction.
Further, since the first reflection region 34A is configured such that the plurality of reflection elements 34A3s are arranged in a stepwise manner in the left-right direction on both the left and right sides of the first light source 22, and the plurality of reflection elements 34B3s are arranged in a stepwise manner in the left-right direction on both the left and right sides of the second light source 24, the light from the first light source 22 can be reflected with high accuracy toward the plurality of third reflection regions 36A in the first reflection region 34A, and the light from the second light source 24 can be reflected with high accuracy toward the plurality of fourth reflection regions 36B in the second reflection region 34B. This makes it possible to make the emission portion of the light guide 30 appear to emit light more uniformly in the left-right direction.
Further, since the third reflective regions 36A of the second reflective portion 36 have a structure in which the plurality of reflective elements 36As are arranged in a stepwise manner in the vertical direction and the fourth reflective regions 36B have a structure in which the plurality of reflective elements 36Bs are arranged in a stepwise manner in the vertical direction, the light from the first light source 22 reflected by the first reflective region 34A can be reflected with high accuracy in the third reflective regions 36A and the light from the second light source 24 reflected by the second reflective region 34B can be reflected with high accuracy in the fourth reflective regions 36B. This makes it possible to make the emission portion 38 of the light guide 30 appear to emit light uniformly in the vertical direction.
Further, since the second reflecting portion 36 is configured such that the plurality of third reflecting regions 36A and the plurality of fourth reflecting regions 36B are arranged in a positional relationship shifted in the front-rear direction of the lamp, the positional relationship in the vertical direction between the portion that appears brightly luminous in each third reflecting region 36A and the portion that appears brightly luminous in each fourth reflecting region 36B can be adjusted by the relative displacement amount in the front-rear direction of the lamp between the third reflecting regions 36A and the fourth reflecting regions 36B. Thus, when any one of the first light source 22 and the second light source 24 is turned on, the emission portion 38 of the light guide 30 can be seen to emit light with substantially the same luminance distribution in the vertical direction.
In particular, the vehicle lamp 10 according to the present embodiment has both functions of the front winker and the position light, and therefore, when the lighting mode of the position light is further changed to the lighting mode of the front winker, the emission portion 38 of the light guide 30 can be made to alternately emit white and amber lights in a vertical stripe shape.
In the above embodiment, the third reflective regions 36A and the fourth reflective regions 36B have been described as being formed to have the same lateral width, but may be formed to have different lateral widths.
In the above embodiment, the explanation has been made on the case where each first reflection region 34A is formed by the left and right three pairs of reflection elements 34A3s arranged in a stepped manner, and each second reflection region 34B is formed by the left and right three pairs of reflection elements 34B3s arranged in a stepped manner, but may be formed by a left and right pair of reflection surfaces or the like instead of the left and right three pairs of reflection elements 34A3s, 34B3 s.
In the above embodiment, the light guide 30 has been described as a structure in which the light from the first light source 22 and the second light source 24 incident from the incident portion 32 is reflected upward in the first reflection portion 34, but a structure in which the light is reflected downward may be employed.
In the above embodiment, the vehicle lamp 10 has been described as having the functions of the front winker and the blinker, but other combinations are also possible, and for example, a configuration having the functions of the tail lamp and the back-up lamp may be adopted.
Next, a modified example of the above embodiment will be described.
First, a first modification of the above embodiment will be described.
Fig. 6 (a) is a view similar to fig. 2 (a) showing the lamp unit 120 according to the present modification.
As shown in fig. 6 (a), the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the light guide 130 is partially different from that of the above embodiment.
That is, the configuration of the vertical plate portion 130A of the light guide 130 according to the present modification is also the same as that of the above-described embodiment, but differs from that of the above-described embodiment in that the emission portion 138 of the horizontal plate portion 130B is configured such that a plurality of diffusion lens elements 138s are formed on a plane extending along a vertical plane orthogonal to the front-rear direction of the lamp.
In the present modification, after entering the light guide 130 from the entrance portion 132, the light from the first light source 22 and the second light source 24 reflected upward by the first reflection portion 134 and further reflected forward of the lamp by the second reflection portion 136 is emitted as diffused light from the exit portion 138, in which the plurality of diffusion lens elements 138s are formed, forward of the lamp.
In the case of adopting the configuration of the present modification, as in the case of the above-described embodiment, when either one of the first light source 22 and the second light source 24 is turned on, the emission portion 138 of the light guide 130 can be made to appear to emit light uniformly in the left-right direction.
Further, with the configuration of the present modification, even when the light guide 130 is viewed from a direction inclined with respect to the front direction of the lamp, the emission portion 138 of the light guide 130 can be made to appear to emit light uniformly in the left-right direction.
Next, a second modification of the above embodiment will be described.
Fig. 6 (b) is a view similar to fig. 2 (a) showing the lamp unit 220 according to the present modification.
As shown in fig. 6 (b), the basic configuration of this modification is the same as that of the above embodiment, but the configuration of the light guide 230 is partially different from that of the above embodiment.
That is, the configuration of the vertical plate portion 230A of the light guide 230 of the present modification is also the same as that of the above embodiment, but is different from that of the above embodiment in that an inclined plate portion 230B extending obliquely upward from the upper end position of the vertical plate portion 230A toward the front of the lamp is provided instead of the horizontal plate portion 30B of the above embodiment.
In the present modification, the light from the first light source 22 and the second light source 24 that is incident on the light guide 230 from the incident portion 232 and then reflected upward by the first reflecting portion 234 is reflected obliquely upward toward the front of the lamp along the inclined plate portion 230B in the second reflecting portion 236.
In the present modification, the light emitting portion 238 of the light guide 230 is configured to be a plane tilted backward with respect to a vertical plane orthogonal to the front-rear direction of the lamp, and thus, the light from the first light source 22 and the light from the second light source 24 reflected by the second reflecting portion 236 is emitted from the light emitting portion 238 toward the front direction of the lamp.
In the case of adopting the configuration of the present modification, as in the case of the above-described embodiment, when either one of the first light source 22 and the second light source 24 is turned on, the emission portion 238 of the light guide 230 can be made to appear to emit light uniformly in the left-right direction.
In addition, by adopting the configuration of the present modification, the degree of freedom in the shape of the light guide 230 can be improved.
In the second modification, a plurality of diffusion lens elements may be formed as the configuration of the emission portion 238 of the light guide 230.
Note that the numerical values shown as the respective elements in the above-described embodiment and the modifications thereof are merely examples, and it is needless to say that they may be set to different values as appropriate.
The present invention is not limited to the configurations described in the above embodiments and modifications thereof, and various modifications other than the above may be made.

Claims (5)

1. A vehicle lamp including a first light source and a second light source having different emission colors from each other, and a light guide body configured to allow light emitted from the first light source and the second light source to enter and emit the light toward a front of the lamp,
the light guide includes an incident portion into which light from the first and second light sources is incident, a first reflecting portion that reflects upward or downward light from the first and second light sources incident from the incident portion, a second reflecting portion that reflects forward light from the first and second light sources reflected by the first reflecting portion toward a lamp, and an emitting portion that emits forward light from the first and second light sources reflected by the second reflecting portion toward the lamp,
the first reflection unit includes a first reflection region for reflecting light from the first light source and a second reflection region for reflecting light from the second light source,
the second reflection unit is configured such that a plurality of third reflection regions for reflecting the light from the first light source reflected by the first reflection region and a plurality of fourth reflection regions for reflecting the light from the second light source reflected by the second reflection region are alternately arranged in a left-right direction.
2. The vehicular lamp according to claim 1,
the first light source and the second light source are arranged in a positional relationship shifted in the vertical direction and the horizontal direction,
the first reflection unit is configured such that the first reflection region and the second reflection region are arranged in a positional relationship in which they are shifted in the front-rear direction of the lamp and partially overlap in the left-right direction.
3. The vehicular lamp according to claim 1 or 2,
the first reflection region is configured such that a plurality of reflection elements are arranged in a stepped manner in the left-right direction on both left and right sides of the first light source,
the second reflection region is configured such that a plurality of reflection elements are arranged in a stepped manner in the left-right direction on both left and right sides of the second light source.
4. The vehicular lamp according to any one of claims 1 to 3,
each of the third reflective regions is configured such that a plurality of reflective elements are arranged in a stepwise manner in the vertical direction,
each of the fourth reflective regions is configured such that a plurality of reflective elements are arranged in a stepwise manner in the vertical direction.
5. The vehicular lamp according to any one of claims 1 to 4,
the second reflecting portion is configured such that the plurality of third reflecting regions and the plurality of fourth reflecting regions are arranged in a positional relationship shifted in the front-rear direction of the lamp.
CN202010800812.XA 2019-09-17 2020-08-11 Vehicle lamp Active CN112524564B (en)

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JP2019168800A JP7291584B2 (en) 2019-09-17 2019-09-17 vehicle lamp

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115127074A (en) * 2021-03-25 2022-09-30 株式会社小糸制作所 Vehicle lamp

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004025699A1 (en) * 2003-06-06 2005-01-05 Zizala Lichtsysteme Gmbh Vehicle head-lamp has auxiliary reflector in lower/upper region of deflection reflector in upper/lower region of main reflector to reflect light from deflection reflector to region in front of vehicle
CN101055066A (en) * 2006-04-11 2007-10-17 株式会社小糸制作所 Vehicle lamp
CN101210660A (en) * 2006-12-27 2008-07-02 丰田合成株式会社 Vehicle lighting assembly
CN101666454A (en) * 2008-09-02 2010-03-10 株式会社小糸制作所 Lighting device for vehicle
CN103017056A (en) * 2011-09-26 2013-04-03 株式会社小糸制作所 Vehicular lamp
CN105202439A (en) * 2014-06-16 2015-12-30 株式会社小糸制作所 Automotive lamp
CN105757573A (en) * 2015-01-06 2016-07-13 株式会社小糸制作所 Vehicle Lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018006091A (en) 2016-06-29 2018-01-11 株式会社小糸製作所 Vehicular lighting fixture
DE102017124296A1 (en) 2017-10-18 2019-04-18 Carl Zeiss Jena Gmbh Lighting device for vehicles
JP7019403B2 (en) 2017-12-19 2022-02-15 株式会社小糸製作所 Vehicle lighting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004025699A1 (en) * 2003-06-06 2005-01-05 Zizala Lichtsysteme Gmbh Vehicle head-lamp has auxiliary reflector in lower/upper region of deflection reflector in upper/lower region of main reflector to reflect light from deflection reflector to region in front of vehicle
CN101055066A (en) * 2006-04-11 2007-10-17 株式会社小糸制作所 Vehicle lamp
CN101210660A (en) * 2006-12-27 2008-07-02 丰田合成株式会社 Vehicle lighting assembly
CN101666454A (en) * 2008-09-02 2010-03-10 株式会社小糸制作所 Lighting device for vehicle
CN103017056A (en) * 2011-09-26 2013-04-03 株式会社小糸制作所 Vehicular lamp
CN105202439A (en) * 2014-06-16 2015-12-30 株式会社小糸制作所 Automotive lamp
CN105757573A (en) * 2015-01-06 2016-07-13 株式会社小糸制作所 Vehicle Lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115127074A (en) * 2021-03-25 2022-09-30 株式会社小糸制作所 Vehicle lamp
CN115127074B (en) * 2021-03-25 2024-05-03 株式会社小糸制作所 Lamp for vehicle

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