EP2194311B1 - Lampe de véhicule - Google Patents

Lampe de véhicule Download PDF

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Publication number
EP2194311B1
EP2194311B1 EP09178030.4A EP09178030A EP2194311B1 EP 2194311 B1 EP2194311 B1 EP 2194311B1 EP 09178030 A EP09178030 A EP 09178030A EP 2194311 B1 EP2194311 B1 EP 2194311B1
Authority
EP
European Patent Office
Prior art keywords
light
light emitting
emitting device
vehicle lamp
source unit
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.)
Not-in-force
Application number
EP09178030.4A
Other languages
German (de)
English (en)
Other versions
EP2194311A3 (fr
EP2194311A2 (fr
Inventor
Noriaki Ito
Hironori Tsukamoto
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
Original Assignee
Koito Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Publication of EP2194311A2 publication Critical patent/EP2194311A2/fr
Publication of EP2194311A3 publication Critical patent/EP2194311A3/fr
Application granted granted Critical
Publication of EP2194311B1 publication Critical patent/EP2194311B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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
    • F21S41/28—Cover glass
    • 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
    • F21S41/29—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/27—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a vehicle lamp having a light source unit, in which semiconductor light emitting devices and electronic components for controlling the semiconductor light emitting devices are mounted on a bus bar assembly, and a light transmitting member through which light emitted from the semiconductor light emitting devices is sent out.
  • a positive bus bar, a negative bus bar, and a plurality of connecting pieces, via which leads of a plurality of light emitting diodes (LEDs) are electrically connected, are mounted on a resin base along a longitudinal direction of the resin base, and are covered by a lens body (see, e.g., JP 8-339707 A ).
  • a set of bus bars, to which LEDs are fixed, and another set of bus bars, to which electronic components are fixed, are supported on a resin base, and are covered by a front cover together with the resin base (see, e.g., JP 2008-084578 A ).
  • the conventional vehicle lamps require a resin base to support the bus bars. Further, in some cases, a circuit board is separately required to mount the electronic components.
  • the present invention is made in view of the foregoing, and it is an object thereof to provide a vehicle lamp in which the number of components is reduced for cost reduction. This object is achieved with the features of independent claims 1 and 3.
  • a vehicle lamp comprises a light source unit and a light control member.
  • the light source unit comprises a semiconductor light emitting device, an electronic component which controls the semiconductor light emitting device, and a bus bar assembly comprising a plurality of bus bars to which the semiconductor light emitting device and the electronic component are mounted to form a circuit.
  • the light control member is arranged directly in front of the light source unit to control a light emitted from the semiconductor light emitting device.
  • the light control member comprises a fixing means for fixing the bus bar assembly to the light control member such that the bus bar assembly of the light source unit is held directly by the light control member.
  • the light source unit is configured such that the semiconductor light emitting device and the electronic component are mounted on the bus bar assembly to form a circuit. Further, the bus bar assembly is held directly by the light control member. Therefore, a resin base for supporting the bus bars or a circuit board for mounting the electronic components becomes unnecessary. Accordingly, the number of components of the vehicle lamp can be reduced.
  • the light control member has a light transmitting member which is disposed to face an optical axis (Ax) of the semiconductor light emitting device.
  • a portion of the light transmitting member has a light intercepting means which conceals the electronic component from view from outside the vehicle lamp.
  • the electronic components such as resistors and capacitors which form a control circuit, are concealed from view from outside the vehicle lamp, while sending out the light emitted from the semiconductor light emitting device through another portion of the light transmitting member. Accordingly, it is possible to improve appearance of the vehicle lamp.
  • the bus bar assembly may be divided into two sections such that the semiconductor light emitting device is arranged on one of the sections and the electronic component is arranged on the other of the sections, and the portion of the light transmitting member having the light intercepting means may be positioned to face the other of the sections on which the electronic component is arranged.
  • the bus bar assembly can be vertically divided into right and left sections.
  • the vehicle lamp comprises a light transmitting member which is disposed to face an optical axis (Ax) of the semiconductor light emitting device, and the light control member has a light blocking member which is disposed between the light transmitting member and the light source unit.
  • the light blocking member that supports the light source unit may be attached to a back face of the light transmitting member.
  • a portion of the light blocking member may have a light transmitting means through which the light emitted from the semiconductor light emitting device is transmitted toward the light transmitting member.
  • the light blocking member conceals the electronic components, such as resistors and capacitors which form a control circuit, from view from outside the vehicle lamp, while allowing the light emitted from the semiconductor light emitting device to be sent out from the light transmitting member. Accordingly, it is possible to improve appearance of the vehicle lamp.
  • the bus bar assembly may be divided into two sections such that the semiconductor light emitting device is arranged on one of the sections and the electronic component is arranged on the other of the sections, and the portion of the light blocking member having the light transmitting means may be positioned to face the one of the sections, on which the semiconductor light emitting device is arranged, such that the light transmitting means faces an optical axis (Ax) of the semiconductor light emitting device.
  • the bus bar assembly can be vertically divided into right and left sections.
  • the plurality of bus bars may be planarly arranged.
  • the light source unit may be directly attached to a back face of the light control member by the fixing means.
  • the vehicle lamp may further comprise a lamp body having an opening, and a transparent cover which is attached to the lamp body to close the opening so as to form a lamp chamber.
  • the light source unit and the light control member may be accommodated inside the lamp chamber.
  • a vehicle lamp 10 according to the first exemplary embodiment of the invention is a rear combination lamp.
  • the vehicle lamp 10 includes a lamp body 11 having an opening on a rear side with respect to a front-rear direction of the vehicle, and a cover 12 which is attached to the lamp body 11 to close the opening of the lamp body 11.
  • the lamp body 11 may be made of resin, and is fixed to a vehicle body.
  • the cover 12 is made of transparent resin which may be colorless, red or amber.
  • the lamp body 11 and the cover 12 form a lamp chamber 13, inside which a light source unit 17 and an inner lens 18 (a light control member, a light transmitting member) are accommodated.
  • the light source unit 17 includes a plurality of semiconductor light emitting devices 15, a plurality of electronic components 16, and a bus bar assembly 14 on which the semiconductor light emitting devices 15 and the electronic components 16 are mounted.
  • the semiconductor light emitting devices 15 are light emitting diodes (LEDs).
  • the inner lens 18 is arranged directly in front (to the rear with respect to the front-rear direction of the vehicle) of the LEDs 15.
  • the light source unit 17 is directly attached and fixed to the inner lens 18.
  • the bus bar assembly 14 includes a plurality of first bus bars 19 and a plurality of second bus bars 20.
  • the first and second bus bars 19, 20 may be planarly arranged as in this exemplary embodiment.
  • the first bus bars 19 are vertically aligned on a side where the LEDs 15 are arranged.
  • the second bus bars 20 are disposed on a side where the electronic components 16 such as resistors and capacitors are arranged.
  • the LEDs 15 and the electronic components 16 are mounted on the bus bar assembly 14 to form a circuit.
  • the LEDs 15 are electrically connected to the first bus bars 19 in series. More specifically, the LEDs 15 are vertically aligned on a section of the bus bar assembly 14 which is on the left in Fig. 1 .
  • the electronic components 16 are electrically connected to the second bus bars 20 to control the LEDs 15.
  • the electronic components 16 are disposed on the other section of the bus bar assembly 14 which is on the right in Fig. 1 .
  • the inner lens 18 is made of transparent and electrically-insulating resin which may be colorless, red or amber.
  • the inner lens 18 has a shape similar to an external shape of the bus bar assembly 14.
  • the inner lens 18 has optical control portions 21 and a dummy portion 22.
  • the optical control portions 21 are disposed on a side corresponding to the LEDs 15, i.e., on the left in Fig. 1 .
  • the number of optical control portions 21 is the same as the number of LEDs 15.
  • the optical control portions 21 are vertically aligned such that each of the optical control portions 21 is aligned with an optical axis Ax of an associated one of the LEDs 15.
  • the dummy portion 22 is disposed on a side corresponding to the electronic components 16, i.e., on the right in Fig. 1 .
  • the dummy portion 22 functions as a light intercepting means which intercepts a light from the outside of the vehicle lamp 10.
  • the bus bar assembly 14 further includes three terminal pins 23 to which the first bus bars 19 and the second bus bars 20 are electrically connected.
  • the terminal pins 23 extend into a male connector portion 24 which is formed at a central portion on a rear surface of the lamp body 11.
  • the male connector portion 24 is fitted into a female connector 25
  • the terminal pins 23 are electrically connected to an external power circuit and an external control circuit, respectively.
  • each of the optical control portions 21 of the inner lens 18 is formed with an LED accommodating recess portion 26 into which the associated one of the LEDs 15 is accommodated.
  • the inner lens 18 has a plurality of fixing pins 27 (an example of fixing means) provided on a side (a back face) of the inner lens 18 that faces the bus bar assembly 14. The fixing pins 27 extend from the back face of the inner lens 18 toward the bus bar assembly 14.
  • the bus bar assembly 14 is formed with a plurality of fixing holes 28 (an example of fixing means), each receiving an associated one of the fixing pins 27.
  • the fixing holes 28 are formed through the first bus bars 19 and/or the second bus bars 20 at positions facing the fixing pins 27.
  • the fixing pins 27 of the inner lens 18 are inserted through the fixing holes 28 of the bus bar assembly 14. Then, the inner lens 18 and the bus bar assembly 14 are firmly attached together by applying, for example, a thermal riveting or an ultrasonic riveting to the fixing pins 27 on a back side of the bus bar assembly 14. Accordingly, the light source unit 17 is directly attached to the back face of the inner lens 18.
  • the fixing pins 27 may be provided on the bus bar assembly 14, and the fixing holes 28 are provided in the inner lens 18.
  • the fixing means may have a configuration other than the pin and hole engagement.
  • the inner lens 18 is formed with diffusing steps 29 on a portion of the back face of the dummy portion 22 that faces the electronic components 16.
  • the diffusing steps 29 are configured to diffusely reflect the light from the outside of the vehicle lamp 10, e.g., irradiation light from a vehicle running behind.
  • the vehicle lamp 10 is configured such that, when a brake pedal of the vehicle is operated, the LEDs 15 are turned on, and the light emitted from the LEDs 15 is controlled to diffuse through the optical control portions 21 of the inner lens 18, and is rearwardly sent out from the vehicle lamp 10 through the transparent cover 12.
  • the dummy portion 22 can conceal the electronic components 16 and the second bus bars 20 from view from outside the vehicle lamp 10.
  • an inner lens 31 has a reflecting layer 32 which is on a portion of a back face of a dummy portion 22 to face the electronic components 16.
  • the reflecting layer 32 is form by, for example, coating or vapor deposition.
  • the reflecting layer 32 is configured to diffusely reflect the light emitted from the outside of the vehicle lamp 10, e.g., irradiation light from a vehicle running behind. Accordingly, the reflecting layer 32 of the dummy portion 22 can conceal the electronic components 16 and the second bus bars 20 from view from outside the vehicle lamp 10.
  • an inner lens 33 according to a second modified example is two colored. More specifically, the inner lens 33 has optical control portions 34 which are transparent, and a dummy portion 35 which is opaque or dark colored. Although the dummy portion 35 has no reflecting function, the dummy portion 35 is arranged to face the electronic components 16 so that the electronic components 16 and the second bus bars 20 are concealed from view from outside the vehicle lamp 10.
  • an inner lens 36 is molded to have a sheet-like shielding member 38 inside a dummy portion 37.
  • the shielding member 38 may have a reflecting function.
  • the dummy portion 37 inside which the shielding member 38 is disposed is arranged to face the electronic components 16 so that the electronic components 16 and the second bus bars 20 are concealed from view from outside the vehicle lamp 10.
  • an inner lens 39 has a portion of an extension member 40 which is installed inside the lamp chamber 13, and optical control portions 41 which are integrally molded with the extension member 40 or fitted in the extension member 40.
  • the extension member 40 may be molded from colored resin. Additionally or alternatively, the extension member 40 may be processed by vapor deposition or coating.
  • the extension member 40 is configured to diffusely reflect the light emitted from the outside of the vehicle lamp 10, e.g., irradiation light from a vehicle running behind, thereby concealing the electronic components 16 and the second bus bars 20 from view from outside the vehicle lamp 10.
  • the inner lens 18, 31, 36, 39 holds the light source unit 17, in which the LEDs 15 and the electronic components 16 are mounted on the bus bar assembly 14, directly on the back part of the inner lens 18, 31, 36, 39.
  • a resin base for supporting the bus bars and a circuit board for the electronic components become unnecessary. Consequently, the number of components can be reduced.
  • the bus bar assembly 14 is divided into right and left sections such that the LEDs 15 are mounted on one of the sections and the electronic components 16 are mounted on the other section, and the dummy portion 22, 35, 37, 40 of the inner lens 18, 31, 33, 36, 39 is arranged to face the section of the bus bar assembly 14 on which the electronic components 16 are mounted.
  • the inner lens 18, 31, 33, 36, 39 can conceal, by the dummy portion 22, 35, 37, 40, the electronic components 16 from view from outside the vehicle lamp 10, while allowing the light emitted from the LEDs 15 to travel through the optical control portions 21, 34, 41, which are respectively arranged to face the optical axes Ax of the LEDs 15.
  • a vehicle lamp 50 according to a second exemplary embodiment of the present invention will be described with reference to Figs. 10 and 11 .
  • elements that are the same as or functionally similar to those of the first exemplary embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.
  • the vehicle lamp 50 includes a light blocking member 52 (a light control member), which is arranged directly in front of a light source unit and between an inner lens 18 and the light source unit 17.
  • the light blocking member 52 includes a plurality of apertures 51 (an example of light transmitting means).
  • the light blocking member 52 is formed from a resin plate member, which has a certain thickness and which is opaque or dark colored.
  • the apertures 51 of the light blocking member 52 are rectangular through holes, and are formed at positions that correspond to LEDs 15 respectively.
  • the apertures 51 are not limited to the rectangular through holes, and may be circular through holes.
  • a plurality of fixing pins 54 are provided on a side (a back face) of the light blocking member 52 that faces a bus bar assembly 14.
  • the fixing pins 54 extend from the back face of the light blocking member 52 toward associated fixing holes 53 (an example of fixing means) of the bus bar assembly 14.
  • Each of the fixing pins 54 of the light blocking member 52 is inserted through the associated one of the fixing holes 53 of the bus bar assembly 14. Then, the light blocking member 52 and the bus bar assembly 14 are firmly attached together by applying, for example, a thermal riveting or an ultrasonic riveting to the fixing pins 54 on a back side of the bus bar assembly 14. Thereafter, the light blocking member 52 and the inner lens 18 are joined by ultrasonic welding or bonding by use of an adhesive agent, the inner lens 18 and the bus bar assembly 14 are firmly attached together with the light blocking member 52 interposed therebetween.
  • the fixing pins 54 may be provided on the bus bar assembly 14, and the fixing holes 53 are provided in the light blocking member 52.
  • the fixing means may have a configuration other than the pin and hole engagement.
  • the bus bar assembly 14 is fixed to the back part of the light blocking member 52, whereby the light source unit 17 is directly held by light blocking member 52. Thereafter, the light blocking member 52, which holds the bus bar assembly 14, is attached to a back face of the inner lens 18.
  • a resin base for supporting the bus bars and a circuit board for the electronic components become unnecessary. Consequently, the number of components can be reduced.
  • the bus bar assembly 14 is divided into right and left sections such that the LEDs 15 are mounted on one of the sections and the electronic components 16 are mounted on the other section, and the light blocking member 51 is provided in a portion of the light blocking member that faces the section on which the LEDs 15 are mounted. Accordingly, the light emitted from the LEDs 15 can travel toward the inner lens 18 without being blocked by the light blocking member 52, while concealing the electronic components 16 from view from outside the vehicle lamp 50.
  • a vehicle lamp 60 according to a third exemplary embodiment of the present invention will be described with reference to Figs. 12 and 13 .
  • the vehicle lamp 60 has a tail lamp 63 inside a lamp chamber 62 which is formed by a lamp body 61 and a transparent cover 64.
  • An inner lens 68 (a light control member) of the vehicle lamp 60 includes optical control portions 65, a dummy portion 66, and a tail lens 67.
  • the lamp body 61 has a socket 69 to which a tail lamp bulb 70 is attached.
  • the tail lens 67 is provided below the optical control portions 65 and the dummy portion 66.
  • the optical control portions 65, the dummy portions 66, and the tail lens 67 may be formed as a one-piece structure.
  • Diffusing steps 71 are formed on a back face of the tail lens 67.
  • the inner lens 68 has fixing means like the inner lens 18 of the first exemplary embodiment to fix and to hold the light source unit 17.
  • the tail lamp bulb 70 is turned on when a lighting switch (not shown) is switched on. Further, the LEDs 15 are turned on when a brake pedal is operated. Light emitted from the LEDs 15 is controlled to diffuse through the optical control portions 65 of the inner lens 68 so as to travel on towards the transparent cover 64, and is transmitted through the transparent cover 64 toward the rear of the vehicle.
  • the tail lamp 63 which is usually treated as a lamp functioning differently, is integrally provided inside the lamp body 61. Accordingly, the vehicle lamp 60 can be modularized to have an integrated configuration.
  • the number of LEDs is not limited to that illustrated in the drawings, and is selected in accordance with vehicle designs and required functions.
  • vehicle lamps of the exemplary embodiments described above are rear combination lamps, the present invention is also applicable to a front combination lamp.

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  • 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)

Claims (8)

  1. Feu de véhicule (10, 50, 60) comprenant une unité de source de lumière (17) et un élément de maîtrise de lumière,
    dans lequel l'unité de source de lumière (17) comprend :
    une pluralité de dispositifs d'émission de lumière à semi-conducteurs (15) ;
    un composant électronique (16) qui commande le dispositif d'émission de lumière à semi-conducteurs (15) ; et
    un ensemble de barres omnibus (14) comprenant une pluralité de barres omnibus (19, 20) sur lesquelles le dispositif d'émission de lumière à semi-conducteurs (15) et le composant électronique (16) sont montés pour former un circuit,
    dans lequel l'élément de maîtrise de lumière est agencé directement à l'avant de l'unité de source de lumière (17) pour maîtriser une lumière émise par les dispositifs d'émission de lumière à semi-conducteurs (15) et comprend des moyens de fixation (27) pour fixer l'ensemble de barres omnibus (14) à l'élément de maîtrise de lumière (18, 31, 33, 36, 39, 68) de sorte que l'ensemble de barres omnibus (14) de l'unité de source de lumière (17) soit maintenu directement par l'élément de maîtrise de lumière ; et caractérisé en ce que
    l'élément de maîtrise de lumière comprend en outre un élément de transmission de lumière (18, 31, 33, 36, 39, 68) avec une pluralité de parties de maîtrise optiques (21, 34, 41, 65), alignées chacune avec un axe optique (Ax) d'un dispositif d'émission de lumière à semi-conducteurs (15) associé de ladite pluralité de dispositifs d'émission de lumière à semi-conducteurs (15) et formées chacune par une partie d'évidement dans laquelle ledit dispositif d'émission de lumière à semi-conducteurs (15) associé est logé, dans lequel une partie de l'élément de transmission de lumière (18, 31, 33, 36, 39, 68) comprend des moyens d'interception de lumière (22, 35, 37, 40, 66) qui empêchent que le composant électronique (16) soit vu à partir de l'extérieur du feu de véhicule (10, 60).
  2. Feu de véhicule (10, 60) selon la revendication 1, dans lequel l'ensemble de barres omnibus (14) est divisé en deux sections de sorte que le dispositif d'émission de lumière à semi-conducteurs (15) soit agencé sur l'une des sections et que le composant électronique (16) soit agencé sur l'autre des sections, et dans lequel ladite partie de l'élément de transmission de lumière (18, 31, 33, 36, 39, 68) est positionnée de manière à faire face à l'autre des sections sur laquelle le composant électronique (16) est agencé.
  3. Feu de véhicule (50) comprenant une unité de source de lumière (17), un élément de transmission de lumière (18), et un élément de maîtrise de lumière,
    dans lequel l'unité de source de lumière (17) comprend :
    une pluralité de dispositifs d'émission de lumière à semi-conducteurs (15) ;
    un composant électronique (16) qui commande le dispositif d'émission de lumière à semi-conducteurs (15) ; et
    un ensemble de barres omnibus (14) comprenant une pluralité de barres omnibus (19, 20) sur lesquelles le dispositif d'émission de lumière à semi-conducteurs (15) et le composant électronique (16) sont montés pour former un circuit ;
    dans lequel l'élément de maîtrise de lumière est agencé directement à l'avant de l'unité de source de lumière (17) pour maîtriser la lumière émise par le dispositif d'émission de lumière à semi-conducteurs (15), et l'élément de maîtrise de lumière comprend un élément de blocage de lumière (52) qui est disposé entre l'élément de transmission de lumière (18) et l'unité de source de lumière (17) ; et caractérisé en ce que
    l'élément de blocage de lumière (52) comprend des moyens de fixation (27, 54) pour fixer l'ensemble de barres omnibus (14) à l'élément de maîtrise de lumière de sorte que l'ensemble de barres omnibus (14) de l'unité de source de lumière (17) soit maintenu directement par l'élément de blocage de lumière (52) de l'élément de commande de lumière ; en ce que
    l'élément de transmission de lumière (18) comprend une pluralité de parties de maîtrise optiques (21), alignées chacune avec un axe optique (Ax) d'un dispositif d'émission de lumière à semi-conducteurs (15) associé de ladite pluralité de dispositifs d'émission de lumière à semi-conducteurs (15) et formées chacune par une partie d'évidement dans laquelle ledit dispositif d'émission de lumière à semi-conducteurs associé est logé.
  4. Feu de véhicule (50) selon la revendication 3, dans lequel une partie de l'élément de blocage de lumière (52) comprend des moyens de transmission de lumière (51) à travers lesquels la lumière émise par le dispositif d'émission de lumière à semi-conducteurs (15) est transmise vers l'élément de transmission de lumière (18).
  5. Feu de véhicule (50) selon la revendication 4, dans lequel l'ensemble de barres omnibus (14) est divisé en deux sections de sorte que le dispositif d'émission de lumière à semi-conducteurs (15) soit agencé sur l'une des sections et que le composant électronique (16) soit agencé sur l'autre des sections, et dans lequel ladite partie de l'élément de blocage de lumière (52) est positionnée de manière à faire face à l'une des sections, sur laquelle le dispositif d'émission de lumière à semi-conducteurs (15) est agencé, de sorte que les moyens de transmission de lumière (51) soient face à un axe optique (Ax) du dispositif d'émission de lumière à semi-conducteurs (15).
  6. Feu de véhicule (10, 50, 60) selon l'une quelconque des revendications 1 à 5, dans lequel la pluralité de barres omnibus (19, 20) sont agencées de manière plane.
  7. Feu de véhicule (10, 50, 60) selon l'une quelconque des revendications 1 à 6, dans lequel l'unité de source de lumière (17) est attachée directement à une face arrière de l'élément de maîtrise de lumière par les moyens de fixation (27, 54).
  8. Feu de véhicule (10, 50, 60) selon l'une quelconque des revendications 1 à 7, comprenant en outre un corps de feu (11, 61) comportant une ouverture et un élément de recouvrement transparent (12, 64) qui est attaché au corps de feu (11, 61) pour fermer l'ouverture de manière à former une chambre de feu (13, 62), dans lequel l'unité de source de lumière (17) et l'élément de maîtrise de lumière sont logés à l'intérieur de la chambre de feu (13, 62).
EP09178030.4A 2008-12-05 2009-12-04 Lampe de véhicule Not-in-force EP2194311B1 (fr)

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JP2008310656A JP5349933B2 (ja) 2008-12-05 2008-12-05 車両用灯具

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EP2194311A3 EP2194311A3 (fr) 2012-05-09
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US10591124B2 (en) 2012-08-30 2020-03-17 Sabic Global Technologies B.V. Heat dissipating system for a light, headlamp assembly comprising the same, and method of dissipating heat
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EP2194311A3 (fr) 2012-05-09
EP2194311A2 (fr) 2010-06-09
JP5349933B2 (ja) 2013-11-20

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