CN211925643U - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
CN211925643U
CN211925643U CN202020396721.XU CN202020396721U CN211925643U CN 211925643 U CN211925643 U CN 211925643U CN 202020396721 U CN202020396721 U CN 202020396721U CN 211925643 U CN211925643 U CN 211925643U
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CN
China
Prior art keywords
light
lamp
light source
incident
emitted
Prior art date
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Active
Application number
CN202020396721.XU
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Chinese (zh)
Inventor
金子雄哉
佐藤真司
佐藤靖
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Koito Manufacturing Co Ltd
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Koito Manufacturing Co Ltd
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B60Q1/0058—Stacked, i.e. one lamp located behind the other in the optical axis direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • 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
    • F21S43/10—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]
    • F21S43/145—Surface emitters, e.g. organic light emitting diodes [OLED]
    • 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
    • F21S43/15—Strips of light sources
    • 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
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A vehicle lamp having a plurality of lamp functions is reduced in size. A vehicle lamp includes: the light guide includes a first light source (12) having a light emitting element (26) and a light transmitting film (28) supporting the light emitting element (26), a second light source (14), and a light guide body (18). The light guide body (18) has: a first incident surface (44a) which is opposed to the light-emitting surface (26a) of the light-emitting element (26) and on which first light (L1) emitted from the first light source (12) is incident; a reflection surface (44b) that internally reflects the first light incident from the first incident surface (44a) to change the propagation direction of the first light; a first emission surface (44c) that emits the first light reflected by the reflection surface (44 b); a second incident surface (46a) on which second light (L2) emitted from the second light source (14) enters; and a second emission surface (46b) that emits the second light that has entered the second entrance surface (46 a).

Description

Vehicle lamp
Technical Field
The present invention relates to a lamp for a vehicle, and more particularly to a lamp for a vehicle used in a vehicle such as an automobile.
Background
In recent years, a vehicle lamp using a planar light source formed of an organic EL element or a light source having a structure in which an LED is sandwiched between conductive layers or films has been proposed. For example, patent document 1 discloses a vehicle lamp including a bendable planar light emitting body having at least one surface in a thickness direction constituting a light emitting surface, and a holder having an engaging portion with which the planar light emitting body is engaged.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2018-160396
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved by the utility model
Various vehicle lamps such as a head lamp, a tail lamp, a stop lamp, a position lamp, a fog lamp, a turn signal lamp, a daytime running lamp, a position lamp, and the like are mounted on a vehicle. When a plurality of lamps are mounted on a vehicle, the installation space of the entire lamp is naturally increased. Therefore, it is conceivable that 1 vehicle lamp has a plurality of lamp functions, but this case leads to an increase in the size of the vehicle lamp. On the other hand, in order to increase the degree of freedom in vehicle design or increase the space available for a purpose different from the lamp installation, there is a case where miniaturization of the vehicle lamp is required.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a technique for realizing miniaturization of a vehicle lamp having a plurality of lamp functions.
Means for solving the problems
In order to solve the above problem, one aspect of the present invention is a lamp for a vehicle. The vehicle lamp includes: a first light source having a light emitting element and a light transmitting film supporting the light emitting element; a second light source; and a light guide body having: a first incident surface facing the light emitting surface of the light emitting element and on which the first light emitted from the first light source is incident; a reflection surface that internally reflects the first light incident from the first incident surface to change a propagation direction of the first light; a first exit surface for emitting the first light reflected by the reflecting surface; a second incident surface on which the second light emitted from the second light source is incident; and a second emission surface that emits the second light that has entered the second entrance surface. According to this aspect, the vehicle lamp can be downsized.
In the above aspect, the second incident surface may have a shape that converts the second light into light directed toward the second emission surface and may also serve as a reflection surface. In any of the above embodiments, the first emission surface may also serve as the second emission surface. In any of the above-described aspects, the light guide may have a third emission surface that emits the first light that has entered from the first entrance surface, and a part of the first light may be reflected by the reflection surface and emitted from the first emission surface, and another part of the first light may be emitted from the third emission surface without being reflected by the reflection surface. In any of the above aspects, the vehicle lamp may include a third light source, and the light guide may include: a third incident surface on which third light emitted from the third light source is incident; and a fourth emission surface that emits the third light incident from the third incident surface. In the above aspect, the first emission surface may also serve as the fourth emission surface. In any of the above-described aspects, the light guide may sandwich both surfaces of the first light source, and the second light source and the third light source may be arranged at positions closer to the rear side of the lamp than the first light source and the light guide and arranged in a direction orthogonal to the front-rear direction of the lamp.
In addition, any combination of the above components and a change in the expression form of the present invention between the method, the apparatus, the system, and the like are also effective as the aspect of the present invention.
Effect of the utility model
According to the utility model discloses, can realize the miniaturization of the vehicle lamps and lanterns that have a plurality of lamps and lanterns functions.
Drawings
Fig. 1 is a perspective view of a vehicle lamp according to an embodiment.
Fig. 2 is a front view of the vehicular lamp.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
Fig. 4 is a sectional view taken along line B-B of fig. 2.
Fig. 5 is a sectional view taken along line C-C of fig. 2.
Description of the symbols
Vehicle lamp 1
12 first light source
14 second light source
16 third light source
18 light guide
26 light emitting element
26a light emitting surface
28 light-transmitting film
44a first incident surface
44b reflective surface
44c first exit face
44d third emission surface
46a second incident surface
46b second exit face
48a third incident surface
48b fourth emission surface
Detailed Description
The present invention will be described below based on preferred embodiments with reference to the accompanying drawings. The embodiments are not intended to limit the scope of the present invention but to exemplify the same, and all the features or combinations thereof described in the embodiments are not necessarily essential to the present invention. The same or equivalent components, members and processes shown in the respective drawings are denoted by the same reference numerals, and overlapping descriptions are appropriately omitted. The scale and shape of each portion shown in the drawings are variably set for convenience of explanation, and are not to be construed as limiting unless otherwise specified. In the present specification and claims, the terms "first" and "second" are used for distinguishing a certain structure from other structures without any particular description, and do not denote any order or importance. In the drawings, parts that are not important in describing the embodiments are not shown.
Fig. 1 is a perspective view of a vehicle lamp according to an embodiment. Fig. 2 is a front view of the vehicular lamp. Fig. 3 is a sectional view taken along line a-a of fig. 2. The vehicle lamp 1 of the present embodiment is, for example, a rear combination lamp disposed at the rear of a vehicle.
The vehicle lamp 1 includes a lamp body 2 having an opening in a front of the lamp, and a translucent cover 4 covering the opening of the lamp body 2. The lamp body 2 is also referred to as a housing, and the cover 4 is also referred to as an outer lens. The cover 4 has light transmittance and constitutes an outer frame of the vehicle lamp 1 together with the lamp body 2. In a lamp chamber 6 formed by the lamp body 2 and the outer cover 4, there are housed: the light source device includes an extension member 8, a lighting circuit 10, a first light source 12, a second light source 14, a third light source 16, and a light guide 18.
The extension member 8 includes a back panel 20 and a base 22. The back plate 20 is a plate that is disposed on the lamp rear side of the first to third light sources 12 to 16 and the light guide 18 and covers the opening of the lamp body 2. The main surfaces of the back panel 20 facing each other face the front-rear direction of the lamp. The second light source 14 is fixed to the main surface of the back panel 20 facing the front side of the lamp. The base 22 protrudes forward from the main surface of the back panel 20 facing the front side of the lamp. The first light source 12, the third light source 16, and the light guide 18 are fixed to the base 22. The back plate 20 and the chassis 22 are integrally molded of resin, for example. The extension member 8 is fixed to the lamp body 2 via a support mechanism not shown.
Lighting circuit 10 is disposed on a rear side of rear panel 20. The lighting circuit 10 is a circuit that drives the first to third light sources 12 to 16. The lighting circuit 10 and the first to third light sources 12 to 16 are connected by a wiring 24 formed of a flexible printed board or the like. The lighting circuit 10 can independently turn on and off the first to third light sources 12 to 16. The lighting circuit 10 can independently turn on/off a plurality of light emitting elements 26, which will be described later.
The first light source 12 includes a light emitting element 26 and a light transmitting film 28 supporting the light emitting element 26. The first light source 12 of the present embodiment has a structure in which a plurality of light emitting elements 26 arranged at a predetermined interval are surrounded by a pair of light transmitting films 28. The light-transmitting film 28 is L-shaped, and the plurality of light-emitting elements 26 are arranged in a string in an L-shape.
The light emitting element 26 is formed of, for example, an LED. For example, as disclosed in japanese patent application laid-open No. 2016-12554, the light-transmitting film 28 includes a pair of base films, a pair of conductive layers, and an adhesive layer. Each part has light transmittance. The pair of base films is made of, for example, polyethylene terephthalate (PET). The pair of conductive layers is formed of, for example, Indium Tin Oxide (ITO).
Each light emitting element 26 is sandwiched between a pair of conductive layers and electrically connected to each conductive layer. One conductive layer is used as a conductive path on the power supply side, and the other conductive layer is used as a conductive path on the ground side. The adhesive layer is disposed between the pair of conductive layers and bonds the conductive layers, and fixes each light-emitting element 26 at a predetermined position. An assembly of the light-emitting elements 26, the adhesive layer, and the pair of conductive layers is sealed by sandwiching the assembly between a pair of base films. The pair of conductive layers is electrically connected to the wiring 24 via a connector.
The current sent from the lighting circuit 10 is supplied to each light emitting element 26 via the wiring 24, the connector, and the pair of conductive layers. Thereby, each light emitting element 26 emits light. The light of each light emitting element 26 is emitted toward both the one base film side and the other base film side. The first light source 12 is substantially transparent except for the light emitting element 26. Therefore, the light emitting elements 26 supported by the light transmissive film 28 appear as if floating in the air. Since the structure in which the light-emitting element 26 is supported by the light-transmitting film 28 is well known, further detailed description is omitted.
The second light source 14 includes a light emitting element 30 and a substrate 32 on which the light emitting element 30 is mounted. The light emitting element 30 is formed of, for example, an LED. Substrate 32 is a member for supporting light emitting element 30, and is fixed to a main surface of rear panel 20 facing the front side of the lamp. The substrate 32 has a main surface on which wiring (not shown) is printed, and the wiring is electrically connected to the wiring 24. The light emitting element 30 is fixed on the wiring of the substrate 32. In the present embodiment, 2 light-emitting elements 30 are mounted on the substrate 32. The current sent from the lighting circuit 10 is supplied to each light emitting element 30 via the wiring 24 and the wiring of the substrate 32. Thereby, each light emitting element 30 emits light.
The third light source 16 includes a planar light emitter 34 and a support plate 36 supporting the planar light emitter 34. The planar light emitter 34 of the present embodiment is an organic EL element. The organic EL element constituting the planar light emitter 34 has a known structure. Specifically, the organic EL element includes: a plate-shaped substrate; an anode, an organic EL light-emitting layer, and a cathode laminated on the substrate; and a sealing plate sealing the organic EL light emitting layer from the outside. The substrate is made of, for example, transparent thin film glass. The organic EL light-emitting layer is formed by stacking a hole injection layer, a hole transport layer, an organic light-emitting layer, and an electron transport layer from the anode-side layer. As the anode, a transparent electrode made of ITO or the like is mainly used, and as the cathode, a metal electrode made of aluminum is mainly used. A transparent electrode made of ITO or the like may be used as the cathode.
The anode is a thin film-like electrode layer and is disposed between the substrate and the organic EL light-emitting layer, and one end portion of the anode extends toward one end side of the organic EL element. The cathode is a thin film electrode layer disposed between the organic EL light-emitting layer and the sealing plate, and one end of the cathode extends toward the other end of the organic EL element. The anode, the organic EL light-emitting layer, and the cathode are sequentially stacked by, for example, vapor deposition. The anode and the cathode are connected to terminals of an external power supply. The sealing plate is a flexible substrate made of thin film glass, and the peripheral edge portion thereof is fixed to the substrate via an adhesive. In the present embodiment, a light-transmitting adhesive is used as the adhesive. The organic EL light emitting layer is sealed from the outside by a sealing member composed of a sealing plate and an adhesive. The space inside the sealing member is filled with an inert gas.
When a voltage is applied to the organic EL element, holes are injected from the anode, and electrons are injected from the cathode. These are bonded to the organic light-emitting layer, and the organic compound such as a fluorescent organic compound is excited by energy generated at that time, whereby the organic EL light-emitting layer emits light. The light emitted at this time passes through the transparent anode and the substrate and is emitted to the front surface side. That is, the substrate-side surface of the organic EL element serves as a main light emitting surface. In the present embodiment, the substrate is made of thin film glass, but a flexible material such as a thin film resin film may be used.
The support plate 36 is made of metal or resin. The support plate 36 has a pair of main surfaces opposed to each other, and the planar light emitter 34 is mounted on one main surface. For example, the planar light emitter 34 is fixed to the main surface of the support plate 36 with an adhesive tape. The posture of the support plate 36 is fixed so that the planar light emitter 34 faces the front of the lamp, and one end of the support plate 36 is fixed to the base 22 of the extension member 8.
The light guide 18 is a resin member having translucency. Examples of the resin used for the light guide 18 include Polycarbonate (PC) and acrylic resin. The light guide 18 guides the light emitted from the first to third light sources 12 to 16 and emits the light to the outside of the vehicle lamp 1. Therefore, the light guide 18 also serves as the first to third light sources 12 to 16. The light guide 18 of the present embodiment is L-shaped as in the first light source 12. The light guide 18 is formed of a pair of L-shaped plate members sandwiching the first light source 12.
The light guide 18 has: a first portion 38 extending in the up-down direction of the lamp; and a second portion 40 extending from the upper end of the first portion 38 rearward of the light fixture. First light source 12 is present throughout substantially the entirety of first portion 38 and second portion 40. The light guide 18 is fixed in a posture such that the light emitting surface 26a of each light emitting element 26 faces the lamp right-left direction, and the lower end of the first portion 38 is fixed to the base 22. In the present embodiment, for convenience, the direction in which the base 22 and the light guide 18 are aligned is referred to as the lamp vertical direction, and the direction in which the light emitting surface 26a of the light emitting element 26 faces is referred to as the lamp horizontal direction, but the vehicle lamp 1 can be mounted on a vehicle in any posture.
The end of the second portion 40 on the lamp rear side faces the second light source 14. The second portion 40 has a substantially bowl-shaped protrusion 42 protruding toward each light emitting element 30 at the end thereof. The curved surface of the convex portion 42 faces the light emitting element 30 of the second light source 14. A surface of the first portion 38 facing the lamp rear side faces the planar light emitter 34 of the third light source 16.
Fig. 4 is a sectional view taken along line B-B of fig. 2. Fig. 5 is a sectional view taken along line C-C of fig. 2. In fig. 4 and 5, a region including the light guide 18 is selected and shown. The light guide 18 has a first incident surface 44a, a reflection surface 44b, and a first emission surface 44 c. The first incident surface 44a is a surface that faces the light emitting surface 26a of each light emitting element 26 and on which the first light L1 emitted from the first light source 12 is incident. The reflection surface 44b is a surface that internally reflects a part of the first light L1 incident from the first incident surface 44a to change the propagation direction of the first light L1. The reflection surface 44b reflects the first light L1 toward the first exit surface 44 c. The first emission surface 44c is a surface from which the first light L1 reflected by the reflection surface 44b and propagating through the light guide 18 is emitted.
The first incident surface 44a is provided on a surface opposing each other in a pair of plate materials constituting the light guide 18. Therefore, the first incident surface 44a extends over substantially the entire first portion 38 and the second portion 40 toward the lamp left or the lamp right. The reflecting surface 44b is provided on the surfaces of the first portion 38 and the second portion 40 facing the rear side of the lamp. The first exit surface 44c is provided on the surfaces of the first portion 38 and the second portion 40 facing the front side of the lamp.
The light guide 18 has a third emission surface 44 d. The third emission surface 44d is a surface from which the first light L1 that has entered the first entrance surface 44a and propagated through the light guide 18 is emitted, and faces a direction different from the first emission surface 44 c. The third emission surface 44d is provided on a surface facing the opposite side of each other of the pair of plate materials constituting the light guide 18. Third emission surface 44d extends substantially entirely across first portion 38 and second portion 40 toward the left or right of the lamp. The first incident surface 44a and the third emission surface 44d face each other.
A part of the first light L1 is reflected by the reflection surface 44b and emitted from the first emission surface 44 c. The reflecting surface 44b mainly reflects a part of the first light L1 of each light emitting element 26 arranged in the first portion 38 and a part of the first light L1 of the light emitting element 26 arranged on the most lamp rear side of the second portion 40 toward the front of the lamp. These first lights L1 are emitted from the first emission surface 44c toward the front of the lamp.
The other part of the first light L1 is emitted from the third emission surface 44d without being reflected by the reflection surface 44 b. The third emission surface 44d emits the remaining part of the first light L1 of each light emitting element 26 arranged in the first portion 38, the remaining part of the first light L1 of the light emitting element 26 arranged on the most lamp rear side of the second portion 40, and the first light L1 of each other light emitting element 26 arranged in the second portion 40 to the lamp side.
In addition, the second portion 40 of the light guide 18 has a second incident surface 46a and a second exit surface 46 b. The second incident surface 46a is a surface on which the second light L2 emitted from the second light source 14 enters. The second emission surface 46b is a surface from which the second light L2 that enters from the second entrance surface 46a and propagates inside the light guide 18 is emitted.
The second incident surface 46a is constituted by a curved surface of the convex portion 42 provided at the lamp rear side end portion of the second portion 40. The second incident surface 46a, which is the surface of the convex portion 42, has a shape that converts the second light L2 into light directed toward the second emission surface 46 b. For example, the second incident surface 46a converts the second light L2 into parallel light toward the second exit surface 46 b. In the present embodiment, the reflection surface 44b disposed on the second portion 40 is also formed by the curved surface of the convex portion 42. Therefore, the second incident surface 46a also serves as the reflection surface 44 b.
The second emission surface 46b is formed by a surface of the second portion 40 facing the front side of the lamp. In the present embodiment, the first emission surface 44c disposed in the second portion 40 is also configured by the surface of the second portion 40 facing the front side of the lamp. Therefore, the first emission surface 44c also serves as the second emission surface 46 b.
In addition, the first portion 38 of the light guide 18 has a third incident surface 48a and a fourth exit surface 48 b. The third incident surface 48a is a surface on which the third light L3 emitted from the third light source 16 enters. The fourth emission surface 48b is a surface from which the third light L3 incident from the third incident surface 48a is emitted.
The third incident surface 48a is provided on a surface of the first portion 38 facing the lamp rear side. The first portion 38 has a pair of protruding plate portions 50, and the pair of protruding plate portions 50 are arranged so as to protrude toward the rear of the lamp while sandwiching the reflection surface 44b in the lamp right-left direction. The surface of each protruding plate 50 facing the lamp rear side faces the planar light emitter 34 of the third light source 16, and constitutes a third incident surface 48 a.
The fourth exit surface 48b is provided on a surface of the first portion 38 facing the front side of the lamp. In the present embodiment, the first emission surface 44c disposed in the first portion 38 is also configured by the surface of the first portion 38 facing the front side of the lamp. Therefore, first emission surface 44c also serves as fourth emission surface 48 b. At least a part of the third light L3 that does not enter the third incident surface 48a passes through the translucent film 28, the first portion 38, and the like, and is emitted to the front and side of the lamp.
That is, in the vehicle lamp 1 of the present embodiment, the light guide 18 sandwiches both surfaces of the first light source 12. The second light source 14 and the third light source 16 are arranged on the lamp rear side of the first light source 12 and the light guide 18, and are arranged in the lamp vertical direction orthogonal to the lamp front-rear direction. The first light L1 emitted from the first light source 12 passes through the light guide 18 and is emitted in the front of the lamp and in the right-left direction of the lamp. At least a part of the second light L2 emitted from the second light source 14 and at least a part of the third light L3 emitted from the third light source 16 are emitted to the front of the lamp through the light guide 18.
As shown in fig. 1 and 2, the housing 4 has a first light-transmitting surface 52 facing the front of the lamp and a pair of second light-transmitting surfaces 54 facing the left and right directions of the lamp. The first to third light beams L1 to L3 emitted from the first, second, and fourth emission surfaces 44c, 46b, and 48b are emitted mainly through the first light-transmitting surface 52 toward the front of the lamp. The first light L1 emitted from the third emission surface 44d is mainly emitted in the left-right direction of the lamp through the second light transmission surface 54. Preferably, the vehicle lamp 1 is attached to the vehicle body so that not only the first light transmission surface 52 is not covered by the vehicle body but also at least a part of the second light transmission surface 54 is not covered by the vehicle body. This can expand the light emission range of the vehicle lamp 1, and can improve the visibility of the vehicle lamp 1.
The vehicle lamp 1 can perform the first lighting function by the lighting of the first light L1, perform the second lighting function by the lighting of the second light source 14, and perform the third lighting function by the lighting of the third light source 16. Alternatively, the vehicle lamp 100 may function as 1 lamp by lighting 2 or 3 of the first light L1 to the third light L3. Examples of the first to third lamp functions include a stop lamp, a tail lamp, a position lamp, a turn lamp, a daytime running lamp, a position lamp, and a fog lamp. In addition, the vehicle lamp 1 can realize so-called sequential light emission by sequentially lighting the plurality of light emitting elements 26.
As described above, the vehicle lamp 1 according to the present embodiment includes: a first light source 12 having a light emitting element 26 and a light transmitting film 28 supporting the light emitting element 26; a second light source 14; and a light guide 18. The light guide 18 has: a first incident surface 44a facing the light emitting surface 26a of the light emitting element 26 and on which the first light L1 emitted from the first light source 12 is incident; a reflecting surface 44b that internally reflects the first light L1 incident from the first incident surface 44a to change the propagation direction of the first light L1; a first exit surface 44c from which the first light L1 reflected by the reflecting surface 44b exits; a second incident surface 46a on which the second light L2 emitted from the second light source 14 is incident; and a second emission surface 46b that emits the second light L2 incident from the second incident surface 46 a.
The vehicle lamp 1 can perform the first lighting function by the lighting of the first light source 12, and can perform the second lighting function by the lighting of the second light source 14. That is, according to the present embodiment, it is possible to make 1 vehicle lamp have a plurality of lamp functions. In the present embodiment, the first light source 12 and the second light source 14 also serve as the light guide 18. Therefore, the vehicle lamp 1 can be reduced in size as compared with a case where a light guide is provided independently for each light source.
Thus, according to the present embodiment, it is possible to miniaturize the vehicle lamp while providing a plurality of lighting functions to 1 vehicle lamp. In addition, the number of vehicle lamps to be mounted on the vehicle can be reduced by integrating 1 vehicle lamp that performs the first lamp function and 1 vehicle lamp that has the second lamp function. Therefore, the installation space of the whole lamp can be reduced. In addition, the number of components of the vehicle lamp can be reduced and the vehicle lamp can be made lighter. As a result, the vehicle can be reduced in cost and weight.
The second incident surface 46a of the present embodiment also serves as the reflection surface 44b, having a shape that converts the second light L2 into light directed toward the second emission surface 46 b. First emission surface 44c also serves as second emission surface 46 b. This can reduce the size of the light guide 18. As a result, further miniaturization of the vehicle lamp 1 can be achieved.
The light guide 18 has a third emission surface 44d that emits the first light L1 incident from the first incident surface 44 a. A part of the first light L1 is reflected by the reflection surface 44b and emitted from the first emission surface 44c, and another part of the first light L1 is not reflected by the reflection surface 44b and emitted from the third emission surface 44 d. This makes it possible to provide more lighting functions to the vehicle lighting device 1 while suppressing an increase in size of the vehicle lighting device 1.
The vehicle lamp 1 of the present embodiment includes a third light source 16. The light guide 18 has: a third incident surface 48a on which the third light L3 emitted from the third light source 16 is incident, and a fourth emission surface 48b which emits the third light L3 incident from the third incident surface 48 a. This makes it possible to provide more lighting functions to the vehicle lighting device 1 while suppressing an increase in size of the vehicle lighting device 1. The first incident surface 44a also serves as the fourth emission surface 48 b. This makes it possible to reduce the size of the light guide 18 and thus the vehicle lamp 1.
In the vehicle lamp 1 according to the present embodiment, the light guide 18 is disposed on both sides of the first light source 12, and the second light source 14 and the third light source 16 are disposed on the lamp rear side of the first light source 12 and the light guide 18 and are arranged in the direction orthogonal to the lamp front-rear direction. This can give a sense of depth, that is, three-dimensional beauty to the observer, and can improve the visibility and design of the vehicle lamp 1.
The embodiments of the present invention have been described in detail above. The above embodiments merely show specific examples when the present invention is implemented. The contents of the embodiments do not limit the technical scope of the present invention, and various design changes such as changes, additions, and deletions of the components can be made without departing from the scope of the inventive concept defined in the claims. The new embodiment to which the design change is applied has both the effects of the combined embodiment and the modification. In the above-described embodiments, the expressions "in the present embodiment", "in the present embodiment" and the like are added to the contents in which such a design change is possible, and the emphasis is placed on the contents. Any combination of the above components is also effective as an aspect of the present invention. Hatching attached to the cross section of the drawings does not limit the material of the object to which the hatching is attached.
In the embodiment, the vehicle lamp 1 is a rear combination lamp, but the configuration is not particularly limited to this, and the vehicle lamp 1 may be a headlamp or the like. The number of the light emitting elements 26 and 30 is not particularly limited, and may be 1 or a number other than the number shown in the drawing. The structures of the second light source 14 and the third light source 16 are not particularly limited, and a semiconductor light emitting element such as an LED, an LD, an organic EL, or an inorganic EL element, a bulb, an incandescent lamp (halogen lamp), a Discharge lamp (Discharge lamp), or the like can be suitably used. In the embodiment, the pair of plate members constituting the light guide 18 is in contact with the entire first light source 12, but may be in contact with only a part of the first light source 12, and a gap may be provided between the other part and the first light source 12.

Claims (10)

1. A vehicle lamp is characterized by comprising:
a first light source having a light emitting element and a light transmitting film supporting the light emitting element;
a second light source; and
a light guide body having: a first incident surface that is opposed to a light emitting surface of the light emitting element and on which first light emitted from the first light source is incident; a reflection surface that internally reflects the first light incident from the first incident surface to change a propagation direction of the first light; a first emission surface that emits the first light reflected by the reflection surface; a second incident surface on which second light emitted from the second light source is incident; and a second emission surface that emits the second light that has entered from the second entrance surface.
2. The vehicular lamp according to claim 1, wherein,
the second incident surface has a shape that converts the second light into light that is directed toward the second exit surface and doubles as the reflection surface.
3. The vehicular lamp according to claim 1 or 2, wherein,
the first emission surface also serves as the second emission surface.
4. The vehicular lamp according to claim 1 or 2, wherein,
the light guide has a third emission surface that emits the first light incident from the first incident surface,
a part of the first light is reflected by the reflection surface and emitted from the first emission surface,
another part of the first light is not reflected by the reflection surface but exits from the third exit surface.
5. The vehicular lamp according to claim 1 or 2, wherein,
the vehicle lamp is provided with a third light source,
the light guide body has:
a third incident surface on which third light emitted from the third light source is incident; and
a fourth emission surface that emits the third light that has entered from the third entrance surface.
6. The vehicular lamp according to claim 5, wherein,
the first emission surface also serves as the fourth emission surface.
7. The vehicular lamp according to claim 5, wherein,
the light guide body clamps two surfaces of the first light source,
the second light source and the third light source are arranged at a position closer to the rear side of the lamp than the first light source and the light guide body and are arranged in a direction orthogonal to the front-rear direction of the lamp.
8. The vehicular lamp according to claim 5, wherein,
the first light source, the second light source, and the third light source are different from each other in structure.
9. The vehicular lamp according to claim 6, wherein,
the vehicle lamp further comprises a translucent cover having a first translucent surface and a second translucent surface,
the first light, the second light, and the third light emitted from the first emission surface, the second emission surface, and the fourth emission surface are emitted toward the front of the vehicle lamp via the first translucent surface.
10. The vehicular lamp according to claim 9, wherein,
the first light emitted from the third emission surface is emitted in the left-right direction of the vehicle lamp via the second translucent surface.
CN202020396721.XU 2019-03-27 2020-03-25 Vehicle lamp Active CN211925643U (en)

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JP2019061239A JP7272842B2 (en) 2019-03-27 2019-03-27 vehicle lamp
JP2019-061239 2019-03-27

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Publication number Priority date Publication date Assignee Title
JP7018707B2 (en) * 2016-04-07 2022-02-14 株式会社小糸製作所 Light source device for vehicle lamps and vehicle lamps

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