WO2014204411A1 - Motor vehicle light, especially a front light or a fog light - Google Patents

Motor vehicle light, especially a front light or a fog light Download PDF

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Publication number
WO2014204411A1
WO2014204411A1 PCT/SI2014/000010 SI2014000010W WO2014204411A1 WO 2014204411 A1 WO2014204411 A1 WO 2014204411A1 SI 2014000010 W SI2014000010 W SI 2014000010W WO 2014204411 A1 WO2014204411 A1 WO 2014204411A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
lens
light source
rear surface
area
Prior art date
Application number
PCT/SI2014/000010
Other languages
French (fr)
Inventor
Jenisej LAKOTA
Original Assignee
Hella Saturnus Slovenija, Proizvodnja Svetlobne Opreme Za Motorna In Druga Vozila, D.O.O.
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 Hella Saturnus Slovenija, Proizvodnja Svetlobne Opreme Za Motorna In Druga Vozila, D.O.O. filed Critical Hella Saturnus Slovenija, Proizvodnja Svetlobne Opreme Za Motorna In Druga Vozila, D.O.O.
Publication of WO2014204411A1 publication Critical patent/WO2014204411A1/en

Links

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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • 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
    • F21S41/25—Projection lenses
    • F21S41/27—Thick lenses
    • 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
    • F21S41/322—Optical layout thereof the reflector using total internal reflection

Definitions

  • Motor vehicle light especially a front light or a fog light
  • the invention belongs to physics, namely to optics, in particular to lighting appliances, in which the light generated by light source is re-directed by means of a lens.
  • the invention may also refer to the field of transporting, in particular to lighting equipment for motor vehicles, namely to motor vehicle lights, especially to headlights or fog lights.
  • the purpose of the invention is to create a simple motor vehicle light, which shall consist of minimal possible number of components, wherein the light beams generated by means of a filament bulb, in particular a halogen bulb, should be uniformly and in accordance with technical requirements directed towards each predetermined area in front of the light, wherein also each dissipation of said light beams towards the adjacent areas i.e. outside of said illuminated area should be prevented.
  • each of them comprises a light source, which is suitable for generating light beams, wherein said light source is either a filament bulb, LED (abbreviation for Light Emitting Diode), a light guide or any other means capable of generating light.
  • a light source is either a filament bulb, LED (abbreviation for Light Emitting Diode), a light guide or any other means capable of generating light.
  • Such lights are usually furnished with a reflector, namely a light impermeably part furnished with reflecting surfaces, which is intended for directing each generated light beams towards each pre-determined area.
  • a reflector namely a light impermeably part furnished with reflecting surfaces, which is intended for directing each generated light beams towards each pre-determined area.
  • the light is foreseen for condensing or dispersing light beams, then such light is furnished with at least partially light permeable lens, and optionally also bezels or any other additional light impermeable parts are available, by which directing of the light towards unde
  • the invention refers to a motor vehicle light, which comprises a light source, which is suitable for generating light beams and is furnished with a lens, which consists of at least partially light permeable material and is adapted for directing of each light beams generated by said light source at least approximately along the optical axis towards each pre-determined illuminated area in front of the light, as well as a light source bearing member, into which said light source is mounted in a detachable manner and with the possibility of replacing said light source in the case of irregularities or replacing the light source with another one having different characteristics, wherein also appropriate energizing of said light source is foreseen.
  • said lens comprises a convex, namely away from said illuminated area in front of the light deflected and particularly parabolic rear surface, as well as a front surface, which is faced towards said illuminated area, wherein a cavity is arranged in the area of said rear surface of the lens, which extends along the optical axis and is adapted to receive each disposable light source, so that said light source is inserted within the interior of said lens.
  • said lens and the light source bearing member are each per se separately interconnected with a rigid bearing frame of the light, which is either directly or indirectly via appropriate casing or at least a part of said casing mounted in each appropriate location in a motor vehicle.
  • said bearing frame is conceived as a ring, by which said lens is surrounded at least in the area of its rear surface. Still further, said bearing frame is adapted to cooperate with appropriate regulating assembly, by means of which the position of said bearing frame together with said lens and said light source bearing member relative to each motor vehicle body is adjustable for the purposes of adjusting each desired direction of light beams towards each desired illuminated area in front of each vehicle.
  • Said light source is selected from the group, which includes filament bulbs, LEDs, light guides or any other parts or assemblies, which allow transmission of light beams towards the interior of said lens, namely towards the area between said rear surface and said front surface of the lens.
  • Said front surface of the lens can optionally be flat and in such case in particular rectangular with respect to the optical axis, but generally it may be either concave, namely deflected towards the rear surface of the lens, or also convex, namely deflected away from the rear surface of the lens.
  • Fig. 1 is a top view of a motor vehicle light
  • Fig. 2 is a schematic cross-section of the light along its diametrical plane
  • Fig. 3 is a further embodiment with concave lens presented analogous to Fig. 2;
  • Fig. 4 is a still further embodiment with convex lens presented analogous to Fig. 2.
  • a light is schematically presented in Fig. 1 and comprises a light source 1, which is intended for generating light beams, as well as a lens 2, which consists of at least partially light permeable material and is adapted for directing light beams generated by said light source 1 at least approximately in a direction along the optical axis 100 towards each illuminated area A in front of the light.
  • Said light further comprises a bearing member 3, into which said light source 1 is inserted, which means mounted in a detachable manner i.e. with the possibility of replacing each light source 1 in the case of irregularities or due to replacement by another light source having different characteristics, wherein appropriate power supply must also be ensured for the purposes of energizing said light source 1.
  • said lens 2 comprises a convex rear surface 21, which is deflected away from said illuminated area A in front of the light, as well as a front surface 22, which is faced towards said illuminated area A.
  • the invention provides that in the area of said rear surface 21 of the lens 2 a cavity 20 is arranged, which extends along the optical axis 100 and is adapted to receive the light source 1, so that said light source 1 is inserted within the interior of the lens 2, namely in the area between said rear surface 21 and said front surface 22 of the lens 2, and is moreover firmly interconnected with said lens 2.
  • the lens 2 and the bearing member 3 of the light source 1 are each per se firmly interconnected with a rigid bearing frame 4 of the light, which is either directly or indirectly via appropriate casing or at least a part of a casing mounted in each appropriate location in each motor vehicle.
  • said bearing frame 4 is formed as a ring, by which the lens 2 is surrounded at least in the area of its rear surface 21.
  • said bearing frame 4 is adapted to cooperate with appropriate regulating assembly 5, by means of which the bearing frame 4 is displaceable together with the lens 2 and the bearing member 3 of the light source 1 for the purposes of adjusting its position relative to each motor vehicle body due to regular directing of light beams towards each desired illuminated area A in front of the vehicle.
  • Various light sources 1 can be used, and the light source 1 can be selected from the group, which includes filament bulbs, LED, light guides and any other parts or assemblies, which enable transmission of light beams towards the interior of said lens 1 , namely towards the area between the rear surface 21 and the front surface 22 of the lens 2.
  • said front surface 22 of the lens 2 is flat. In such case, said front surface 22 of the lens 2 is preferably rectangular with respect to the optical axis 100.
  • a further embodiment of the light provides that the front surface 22 of the lens 2 is concave, namely deflected towards the rear surface 21 of the lens 2.
  • a still further embodiment of the light provides that the front surface 22 of the lens 2 is convex, namely deflected away from the rear surface 21 of the lens 2.
  • said area A is uniformly and intensively illuminated without any need on the presence of a reflector or a bezel or similar screen consisting of light impermeable material.
  • a still further possibility of adjusting each illumination of said area A in front of the vehicle is given by each appropriate design of the shape of the front surface 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

A motor vehicle light according to invention comprises a lens (2) with a convex, namely away from the illuminated area (A) in front of the light deflected rear surface (21), as well as towards said illuminated area (A) deflected front surface (22), wherein a cavity (20) is foreseen in the area of said rear surface (21) of the lens (2), which extends along the optical axis (100) of the light and which is adapted to receive each light source (1), so that said light source (1) is insertable into the interior of said lens (2), namely in the area between said rear surface (21) and said front surface (22) of the lens (2), and is at the same time connectable with said lens (2). Said lens (2) and a bearing member (3) of said light source (1) are each per se connected with a rigid bearing frame (4) of the light, which is either directly or indirectly via at least a part of each appropriate casing mounted in each appropriate position within a motor vehicle. Such light is characterized by minimizing the number of each required components, and enables directing of light beams generated by an ordinary light source (1) e.g. a filament bulb or in particular a halogen bulb towards each pre-defined illuminated area (A) in front of the light, so that said area (A) is uniformly illuminated and dissipation of light beams outside of said pre-determined illuminated area (A) is prevented.

Description

Motor vehicle light, especially a front light or a fog light
The invention belongs to physics, namely to optics, in particular to lighting appliances, in which the light generated by light source is re-directed by means of a lens. In the context of one of possible embodiments, the invention may also refer to the field of transporting, in particular to lighting equipment for motor vehicles, namely to motor vehicle lights, especially to headlights or fog lights.
In this, the purpose of the invention is to create a simple motor vehicle light, which shall consist of minimal possible number of components, wherein the light beams generated by means of a filament bulb, in particular a halogen bulb, should be uniformly and in accordance with technical requirements directed towards each predetermined area in front of the light, wherein also each dissipation of said light beams towards the adjacent areas i.e. outside of said illuminated area should be prevented.
Several lighting devices are known in the field of optics, and each of them comprises a light source, which is suitable for generating light beams, wherein said light source is either a filament bulb, LED (abbreviation for Light Emitting Diode), a light guide or any other means capable of generating light. Such lights are usually furnished with a reflector, namely a light impermeably part furnished with reflecting surfaces, which is intended for directing each generated light beams towards each pre-determined area. When the light is foreseen for condensing or dispersing light beams, then such light is furnished with at least partially light permeable lens, and optionally also bezels or any other additional light impermeable parts are available, by which directing of the light towards undesired directions is prevented. In addition to the aforementioned components, said light is also furnished with a casing, to which the majority of the aforementioned parts is either directly or indirectly attached. One of such lights is disclosed e.g. in EP 0 230 561 Al
The invention refers to a motor vehicle light, which comprises a light source, which is suitable for generating light beams and is furnished with a lens, which consists of at least partially light permeable material and is adapted for directing of each light beams generated by said light source at least approximately along the optical axis towards each pre-determined illuminated area in front of the light, as well as a light source bearing member, into which said light source is mounted in a detachable manner and with the possibility of replacing said light source in the case of irregularities or replacing the light source with another one having different characteristics, wherein also appropriate energizing of said light source is foreseen.
The invention provides that said lens comprises a convex, namely away from said illuminated area in front of the light deflected and particularly parabolic rear surface, as well as a front surface, which is faced towards said illuminated area, wherein a cavity is arranged in the area of said rear surface of the lens, which extends along the optical axis and is adapted to receive each disposable light source, so that said light source is inserted within the interior of said lens. Besides, said lens and the light source bearing member are each per se separately interconnected with a rigid bearing frame of the light, which is either directly or indirectly via appropriate casing or at least a part of said casing mounted in each appropriate location in a motor vehicle. Moreover, said bearing frame is conceived as a ring, by which said lens is surrounded at least in the area of its rear surface. Still further, said bearing frame is adapted to cooperate with appropriate regulating assembly, by means of which the position of said bearing frame together with said lens and said light source bearing member relative to each motor vehicle body is adjustable for the purposes of adjusting each desired direction of light beams towards each desired illuminated area in front of each vehicle.
Said light source is selected from the group, which includes filament bulbs, LEDs, light guides or any other parts or assemblies, which allow transmission of light beams towards the interior of said lens, namely towards the area between said rear surface and said front surface of the lens.
Said front surface of the lens can optionally be flat and in such case in particular rectangular with respect to the optical axis, but generally it may be either concave, namely deflected towards the rear surface of the lens, or also convex, namely deflected away from the rear surface of the lens.
The invention will be described by means of embodiments, which are schematically presented in the enclosed drawings, wherein
Fig. 1 is a top view of a motor vehicle light;
Fig. 2 is a schematic cross-section of the light along its diametrical plane;
Fig. 3 is a further embodiment with concave lens presented analogous to Fig. 2;
Fig. 4 is a still further embodiment with convex lens presented analogous to Fig. 2.
A light is schematically presented in Fig. 1 and comprises a light source 1, which is intended for generating light beams, as well as a lens 2, which consists of at least partially light permeable material and is adapted for directing light beams generated by said light source 1 at least approximately in a direction along the optical axis 100 towards each illuminated area A in front of the light. Said light further comprises a bearing member 3, into which said light source 1 is inserted, which means mounted in a detachable manner i.e. with the possibility of replacing each light source 1 in the case of irregularities or due to replacement by another light source having different characteristics, wherein appropriate power supply must also be ensured for the purposes of energizing said light source 1.
In accordance with the invention, said lens 2 comprises a convex rear surface 21, which is deflected away from said illuminated area A in front of the light, as well as a front surface 22, which is faced towards said illuminated area A. The invention provides that in the area of said rear surface 21 of the lens 2 a cavity 20 is arranged, which extends along the optical axis 100 and is adapted to receive the light source 1, so that said light source 1 is inserted within the interior of the lens 2, namely in the area between said rear surface 21 and said front surface 22 of the lens 2, and is moreover firmly interconnected with said lens 2.
The lens 2 and the bearing member 3 of the light source 1 are each per se firmly interconnected with a rigid bearing frame 4 of the light, which is either directly or indirectly via appropriate casing or at least a part of a casing mounted in each appropriate location in each motor vehicle. In the shown embodiments^ according to Figs 1 - 4, said bearing frame 4 is formed as a ring, by which the lens 2 is surrounded at least in the area of its rear surface 21.
Moreover, said bearing frame 4 is adapted to cooperate with appropriate regulating assembly 5, by means of which the bearing frame 4 is displaceable together with the lens 2 and the bearing member 3 of the light source 1 for the purposes of adjusting its position relative to each motor vehicle body due to regular directing of light beams towards each desired illuminated area A in front of the vehicle.
Various light sources 1 can be used, and the light source 1 can be selected from the group, which includes filament bulbs, LED, light guides and any other parts or assemblies, which enable transmission of light beams towards the interior of said lens 1 , namely towards the area between the rear surface 21 and the front surface 22 of the lens 2.
In one of possible embodiments of such light according to the invention, said front surface 22 of the lens 2 is flat. In such case, said front surface 22 of the lens 2 is preferably rectangular with respect to the optical axis 100.
A further embodiment of the light provides that the front surface 22 of the lens 2 is concave, namely deflected towards the rear surface 21 of the lens 2. A still further embodiment of the light provides that the front surface 22 of the lens 2 is convex, namely deflected away from the rear surface 21 of the lens 2.
As soon as the light source 1 is inserted within said lens 2 and appropriately energized, light beams are generated in the area between the rear surface 21 and the front surface 22 of the lens 2, which are transmitted throughout at least partially light permeable material of the lens 2 and then on the border between said material of the lens 2 and circumferential air space deflected on the rear surface 21 of the lens 2 back into the material of said lens 2, wherein due to appropriate shape of said rear surface 21 of the lens 2 said light beams are directed towards the front surface 22 of the lens 2, through which the light beams are then transmitted towards each pre-defined illuminated area A in front of the light. When said rear surface 21 of the lens 2 is appropriately shaped, said area A is uniformly and intensively illuminated without any need on the presence of a reflector or a bezel or similar screen consisting of light impermeable material. A still further possibility of adjusting each illumination of said area A in front of the vehicle is given by each appropriate design of the shape of the front surface 22.

Claims

PATENT CLAIMS
1. Motor vehicle light, in particular a front light or a fog light, which comprises a light source (1), which is suitable for generating light beams, a lens (2), which consists of at least partially light permeable material and is adapted for directing of each light beams generated by said light source (1) at least approximately along the optical axis (100) towards each pre-determined illuminated area (A) in front of the light, as well as a light source (1) bearing member (3), into which said light source (1) is mounted in a detachable manner and with the possibility of replacing said light source (1) in the case of irregularities or replacing the light source (1) with another one having different characteristics, wherein also appropriate energizing of said light source (1) is foreseen, characterized in that said lens (2) comprises a convex, namely away from said illuminated area (A) in front of the light deflected rear surface (21), and a front surface (22), which is faced towards said illuminated area (A), wherein a cavity (20) is arranged in the area of said rear surface (21) of the lens (2), which extends along the optical axis (100) and is adapted to receive each disposable light source (1), so that said light source (1) is inserted within the interior of said lens (2), and in that said lens (2) and the light source (1) bearing member (3) are each per se separately interconnected with a rigid bearing frame (4) of the light, which is either directly or indirectly via appropriate casing or at least a part of said casing mounted in each appropriate location in a motor vehicle.
2. Light according to Claim 1, characterized in that said bearing frame (4) is conceived as a ring, by which said lens (2) is surrounded at least in the area of its rear surface (21).
3. Light according to Claim 1 or 2, characterized in that said bearing frame (4) is adapted to cooperate with appropriate regulating assembly (5), by means of which the position of said bearing frame (4) together with said lens (2) and said light source (1) bearing member (3) relative to each motor vehicle body is adjustable for the purposes of adjusting each desired direction of light beams towards each desired illuminated area (A) in front of each vehicle.
4. Light according to anyone of Claims 1 to 3, characterized in that said rear surface (21) is parabolic.
5. Light according to anyone of Claims 1 to 4, characterized in that said light source (1) is selected from the group, which includes filament bulbs, LEDs, light guides or any other parts or assemblies, which allow transmission of light beams towards the interior of said lens (2), namely towards the area between said rear surface (21) and said front surface (22) of the lens (2).
6. Light according to anyone of Claims 1 to 5, characterized in that said front surface (22) of the lens (2) is flat.
7. Light according to Claim 6, characterized in that said front surface (22) of the lens (2) is rectangular with respect to the optical axis (100).
8. Light according to anyone f Claims 1 to 5, characterized in that said front surface (22) of the lens (2) is concave, namely deflected towards the rear surface (21) of the lens (2).
9. Light according to anyone of Claims 1 to 5, characterized in that said front surface (22) of the lens (2) is convex, namely deflected away from the rear surface (21) of the lens (2).
PCT/SI2014/000010 2013-06-21 2014-02-13 Motor vehicle light, especially a front light or a fog light WO2014204411A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SI201300168A SI24388A (en) 2013-06-21 2013-06-21 Motor vehicle light, in particular a front light or a fog light
SIP-201300168 2013-06-21

Publications (1)

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WO2014204411A1 true WO2014204411A1 (en) 2014-12-24

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PCT/SI2014/000010 WO2014204411A1 (en) 2013-06-21 2014-02-13 Motor vehicle light, especially a front light or a fog light

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR459643A (en) * 1913-05-14 1913-11-10 Thomas Homer Lens for car lanterns and others
FR643364A (en) * 1927-11-05 1928-09-15 Reflector for projector, headlight
EP0230561A1 (en) 1986-01-15 1987-08-05 Daimler-Benz Aktiengesellschaft Device for switching a multidisc clutch for blocking an intermediate differential driving two axles of a motor vehicle
EP1500872A2 (en) * 2003-07-25 2005-01-26 Automotive Lighting Italia Spa Vehicle lighting device with an annular reflector, and relative improved reflector
US20050063191A1 (en) * 2003-09-24 2005-03-24 Larsen Michael K. Headlamp assemblies and optical bodies for use therewith
DE102005005860A1 (en) * 2004-02-10 2005-08-25 Koito Manufacturing Co., Ltd. Vehicle light unit
EP1739346A1 (en) * 2005-06-30 2007-01-03 Valeo Vision Fog lamp with projection lens
US20120327677A1 (en) * 2011-06-21 2012-12-27 Stanley Electric Co., Ltd. Lamp body and vehicle lamp body unit
WO2013073419A1 (en) * 2011-11-18 2013-05-23 株式会社小糸製作所 Vehicle lamp

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR459643A (en) * 1913-05-14 1913-11-10 Thomas Homer Lens for car lanterns and others
FR643364A (en) * 1927-11-05 1928-09-15 Reflector for projector, headlight
EP0230561A1 (en) 1986-01-15 1987-08-05 Daimler-Benz Aktiengesellschaft Device for switching a multidisc clutch for blocking an intermediate differential driving two axles of a motor vehicle
EP1500872A2 (en) * 2003-07-25 2005-01-26 Automotive Lighting Italia Spa Vehicle lighting device with an annular reflector, and relative improved reflector
US20050063191A1 (en) * 2003-09-24 2005-03-24 Larsen Michael K. Headlamp assemblies and optical bodies for use therewith
DE102005005860A1 (en) * 2004-02-10 2005-08-25 Koito Manufacturing Co., Ltd. Vehicle light unit
EP1739346A1 (en) * 2005-06-30 2007-01-03 Valeo Vision Fog lamp with projection lens
US20120327677A1 (en) * 2011-06-21 2012-12-27 Stanley Electric Co., Ltd. Lamp body and vehicle lamp body unit
WO2013073419A1 (en) * 2011-11-18 2013-05-23 株式会社小糸製作所 Vehicle lamp

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