WO2012103984A1 - Lighting device for a sun roof of a vehicle and sun roof for a vehicle - Google Patents

Lighting device for a sun roof of a vehicle and sun roof for a vehicle Download PDF

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Publication number
WO2012103984A1
WO2012103984A1 PCT/EP2011/072908 EP2011072908W WO2012103984A1 WO 2012103984 A1 WO2012103984 A1 WO 2012103984A1 EP 2011072908 W EP2011072908 W EP 2011072908W WO 2012103984 A1 WO2012103984 A1 WO 2012103984A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
lighting device
sun roof
emitting diodes
vehicle
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.)
Ceased
Application number
PCT/EP2011/072908
Other languages
French (fr)
Inventor
Allen Lin
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.)
Ams Osram International GmbH
Original Assignee
Osram Opto Semiconductors GmbH
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 Osram Opto Semiconductors GmbH filed Critical Osram Opto Semiconductors GmbH
Publication of WO2012103984A1 publication Critical patent/WO2012103984A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/20—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for lighting specific fittings of passenger or driving compartments; mounted on specific fittings of passenger or driving compartments
    • B60Q3/208—Sun roofs; Windows
    • 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
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/60—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
    • B60Q3/62—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
    • B60Q3/64—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device

Definitions

  • a lighting device for a sun roof of a vehicle and a sun roof for a vehicle are provided.
  • One object of the present invention is to provide a lighting device for a sun roof of a vehicle, such that the sun roof can be used for lighting purposes. According to a further aspect of the present invention a sun roof with such a lighting device should be provided.
  • a lighting device for a sun roof is given by present claim 1.
  • a sun roof for a vehicle is further given by present claim 7.
  • a lighting device for a sun roof of a vehicle comprises in particular :
  • the light guide is preferably intended to form a window of the sun roof, in order to transmit light from the exterior of the vehicle into the interior. Since the lighting device is further equipped with a plurality of light emitting diodes, the lighting device preferably has the function of an
  • a main surface of the light guide forms a light throughput surface of the lighting device.
  • the light input surface is represented by a side face of the light guide.
  • the side faces of the light guide are arranged substantially perpendicular to the light throughput surface .
  • the light throughput surface of the light guide has a rectangular shape and two side faces of the light guide are intended as light input surfaces.
  • Each light input surface is provided with a plurality of light emitting diodes arranged such that their light is coupled in the light guide via the light input surface.
  • the light is than distributed within the light guide an irradiated from the light throughput surface of the light guide on a preferably nearly homogeneous manner.
  • the plurality of light emitting diodes is mounted on a printed circuit board. If more than one light input surface is provided by the light guide, each plurality of light emitting diodes corresponding to one light input surface is preferably mounted on a separate printed circuit board.
  • the light emitting diodes emit white light during operation .
  • the light emitting diodes are arranged in an equally spaced manner.
  • each plurality of light emitting diodes corresponding to one light input surface of the light guide is arranged for example on a printed circuit board in an equally spaced manner.
  • the light guide is a plastic board permeable for visible light. Further, the light guide can be formed of a glass.
  • the light guide is transparent for visible light.
  • the lighting device is particularly suited for a sun roof for a vehicle.
  • the sun roof it comprises a movable cover.
  • the movable cover is arranged such that in a closed state of the cover the light throughput surface of the lighting device is covered, while in an open state of the cover, the light throughput surface is at least partially free of the cover. In the open state of the cover, light from the exterior can get into the interior of the vehicle through the light guide of the lighting device.
  • the cover for example, can be slided in a lateral direction with respect to the light throughput surface in order to open the cover.
  • the lighting device or a part of the lighting device, such as the light guide is movable such that in an open state of the sun roof, the interior of the vehicle is open to the exterior.
  • the lighting device or the movable part of the lighting device can be intended to be slided in a lateral direction or can be intended to be lifted in a vertical direction in order to open the sun roof. Further, the lighting device or the movable part of the lighting device might be tilted with respect to the roof of the vehicle in order to open the sun roof.
  • the light emitting diodes of the lighting device can be turned on, for example by the help of a separate switch, such that the inside of the vehicle is illuminated.
  • the light emitting diodes are intended to be electrically connected to the battery of the car, for example by the help of squeezable contacts .
  • Figure 1 shows a schematic perspective view of a lighting device according to an embodiment.
  • Figure 2 shows a schematic perspective view of a sun roof according to an embodiment.
  • Figure 3 shows a schematic top view on a vehicle with a sun roof according to an embodiment.
  • the lighting device 1 comprises a light guide 2 with a main surface 3.
  • the main surface 3 of the light guide 2 forms the light throughput surface of the lighting device 1.
  • the main surface 3 of the light guide has a rectangular shape.
  • the light guide 2 has further four side faces 4, wherein each side face 4 is intended to be a light input surface.
  • the light guide 2 is formed by a plastic board, which is transparent for visible light .
  • each light input surface 4 Parallel to each light input surface 4 a plurality of light emitting diodes 5 is arranged.
  • Each plurality of light emitting diodes 5 corresponding to a light input surface 4 is mounted on a separate printed circuit board 6.
  • the light emitting diodes 5 are mounted in an equally spaced manner on the printed circuit board 6.
  • the light emitting diodes 5 are depicted in a certain distance to the light input surface 4 in order to ensure a better understanding of the figure. However, in reality, the light emitting diodes 5 are preferably as near as possible mounted to the light input surfaces 4, in order to avoid loss of light. Preferably, the light emitting diodes 5 emit white light during operation.
  • the sun roof 7 according to the embodiment of Figure 2 comprises a lighting device 1 as for example already
  • the sun roof comprises a cover 8, which is moveable in order to provide an open state and a closed state of the cover 8.
  • the cover 8 can be slided in a direction parallel to the main surface 3 of the light guide.
  • the cover 8 blankets in particular the light throughput surface 3 of the light guide 2.
  • the cover 8 is arranged such that light from the exterior can shines through the light guide 2.
  • the lighting device 1 preferably the light guide 2
  • the light guide 2 is movable in order to provide an open state of the sun roof 7.
  • the light guide 2 can be slighted in a laterally direction with respect to its light throughput surface 3 or lifted in a vertical direction with respect to its light throughput surface 3 or tilted in an angle with respect to its light throughput surface 3.
  • the cover 8 is in an open state, if the light guide 2 is moved.
  • Figure 3 shows exemplarily a sun roof 7 as for example described in connection with Figure 2 in further detail, the sun roof being positioned in the roof of a passenger car.
  • the light emitting diodes 5 of the sun roof 7 are for example electrically connected to the battery of the car. Furthermore, preferably a switch (not shown) is provided in order to turn the light emitting diodes 5 on.
  • the invention is not limited to the description of the embodiments. Rather, the invention comprises each new feature as well as each combination of features, particularly each combination of features of the claims, even if the feature or the combination of features itself is not explicitly given in the claims or embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

A lighting device (1) for a sun roof (7) of a vehicle is provided. The lighting device comprises a light guide (2) with at least one light input surface (4), and a plurality of light emitting diodes (5) arranged such that the light of the light emitting diodes (5) is coupled in the light guide (2) via the light input surface (4). Furthermore, a sun roof (7) with such a lighting device (1) is provided.

Description

Description
LIGHTING DEVICE FOR A SUN ROOF OF A VEHICLE AND SUN ROOF FOR A VEHICLE
A lighting device for a sun roof of a vehicle and a sun roof for a vehicle are provided.
One object of the present invention is to provide a lighting device for a sun roof of a vehicle, such that the sun roof can be used for lighting purposes. According to a further aspect of the present invention a sun roof with such a lighting device should be provided. A lighting device for a sun roof is given by present claim 1. A sun roof for a vehicle is further given by present claim 7.
Advantageous embodiments and developments of the lighting device and the sun roof are subject of the dependent claims.
A lighting device for a sun roof of a vehicle comprises in particular :
- a light guide with at least one light input surface, and
- a plurality of light emitting diodes arranged such that the light of the light emitting diodes is coupled in the light guide via the light input surface.
The light guide is preferably intended to form a window of the sun roof, in order to transmit light from the exterior of the vehicle into the interior. Since the lighting device is further equipped with a plurality of light emitting diodes, the lighting device preferably has the function of an
illumination device for the interior of the vehicle. Preferably, a main surface of the light guide forms a light throughput surface of the lighting device. According to an embodiment of the lighting device, the light input surface is represented by a side face of the light guide. Preferably, the side faces of the light guide are arranged substantially perpendicular to the light throughput surface .
According to an embodiment of the lighting device, the light throughput surface of the light guide has a rectangular shape and two side faces of the light guide are intended as light input surfaces. Each light input surface is provided with a plurality of light emitting diodes arranged such that their light is coupled in the light guide via the light input surface. The light is than distributed within the light guide an irradiated from the light throughput surface of the light guide on a preferably nearly homogeneous manner.
According to a further embodiment of the lighting device, the plurality of light emitting diodes is mounted on a printed circuit board. If more than one light input surface is provided by the light guide, each plurality of light emitting diodes corresponding to one light input surface is preferably mounted on a separate printed circuit board.
Preferably, the light emitting diodes emit white light during operation .
According to an embodiment of the lighting device, the light emitting diodes are arranged in an equally spaced manner. For example, it is possible that each plurality of light emitting diodes corresponding to one light input surface of the light guide is arranged for example on a printed circuit board in an equally spaced manner. According to a further embodiment of the lighting device, the light guide is a plastic board permeable for visible light. Further, the light guide can be formed of a glass.
Preferably, the light guide is transparent for visible light. The lighting device is particularly suited for a sun roof for a vehicle.
According to an embodiment of the sun roof, it comprises a movable cover. Preferably, the movable cover is arranged such that in a closed state of the cover the light throughput surface of the lighting device is covered, while in an open state of the cover, the light throughput surface is at least partially free of the cover. In the open state of the cover, light from the exterior can get into the interior of the vehicle through the light guide of the lighting device.
The cover, for example, can be slided in a lateral direction with respect to the light throughput surface in order to open the cover.
According to a further embodiment of the sun roof, the lighting device or a part of the lighting device, such as the light guide is movable such that in an open state of the sun roof, the interior of the vehicle is open to the exterior.
The lighting device or the movable part of the lighting device, such as the light guide, can be intended to be slided in a lateral direction or can be intended to be lifted in a vertical direction in order to open the sun roof. Further, the lighting device or the movable part of the lighting device might be tilted with respect to the roof of the vehicle in order to open the sun roof.
According to a further embodiment of the sun roof, the light emitting diodes of the lighting device can be turned on, for example by the help of a separate switch, such that the inside of the vehicle is illuminated.
According to a further embodiment of the sun roof, the light emitting diodes are intended to be electrically connected to the battery of the car, for example by the help of squeezable contacts .
Further preferred embodiments and developments of the
invention are described in the following in connection with the Figures. Figure 1 shows a schematic perspective view of a lighting device according to an embodiment.
Figure 2 shows a schematic perspective view of a sun roof according to an embodiment.
Figure 3 shows a schematic top view on a vehicle with a sun roof according to an embodiment.
Equal or similar elements as well as elements of equal function are designated with the same reference signs in the figures. The figures and the proportions of the elements shown in the figures are not regarded as being shown to scale. Rather, single elements, in particular layers, can be shown exaggerated in magnitude for the sake of better
representation .
The lighting device 1 according to the embodiment of Figure 1 comprises a light guide 2 with a main surface 3. The main surface 3 of the light guide 2 forms the light throughput surface of the lighting device 1. The main surface 3 of the light guide has a rectangular shape. The light guide 2 has further four side faces 4, wherein each side face 4 is intended to be a light input surface.
According to the embodiment of Figure 1, the light guide 2 is formed by a plastic board, which is transparent for visible light .
Parallel to each light input surface 4 a plurality of light emitting diodes 5 is arranged. Each plurality of light emitting diodes 5 corresponding to a light input surface 4 is mounted on a separate printed circuit board 6. Preferably, the light emitting diodes 5 are mounted in an equally spaced manner on the printed circuit board 6.
In Figure 1, the light emitting diodes 5 are depicted in a certain distance to the light input surface 4 in order to ensure a better understanding of the figure. However, in reality, the light emitting diodes 5 are preferably as near as possible mounted to the light input surfaces 4, in order to avoid loss of light. Preferably, the light emitting diodes 5 emit white light during operation. The sun roof 7 according to the embodiment of Figure 2 comprises a lighting device 1 as for example already
explained in further detail in connection with Figure 1. The sun roof comprises a cover 8, which is moveable in order to provide an open state and a closed state of the cover 8. According to the embodiment of Figure 2, the cover 8 can be slided in a direction parallel to the main surface 3 of the light guide.
In a closed state of the cover 8, the cover 8 blankets in particular the light throughput surface 3 of the light guide 2. In an open state of the sun roof 7, the cover 8 is arranged such that light from the exterior can shines through the light guide 2.
Furthermore, at least a part of the lighting device 1, preferably the light guide 2, is movable in order to provide an open state of the sun roof 7.
For example, the light guide 2 can be slighted in a laterally direction with respect to its light throughput surface 3 or lifted in a vertical direction with respect to its light throughput surface 3 or tilted in an angle with respect to its light throughput surface 3. Preferably, the cover 8 is in an open state, if the light guide 2 is moved.
Figure 3 shows exemplarily a sun roof 7 as for example described in connection with Figure 2 in further detail, the sun roof being positioned in the roof of a passenger car.
The light emitting diodes 5 of the sun roof 7 are for example electrically connected to the battery of the car. Furthermore, preferably a switch (not shown) is provided in order to turn the light emitting diodes 5 on.
This application claims priority of the Chinese application CN 201110036044.6. The content of this application is herein incorporated by references in its entirety.
The invention is not limited to the description of the embodiments. Rather, the invention comprises each new feature as well as each combination of features, particularly each combination of features of the claims, even if the feature or the combination of features itself is not explicitly given in the claims or embodiments.

Claims

Claims :
1. Lighting device (1) for a sun roof (7) of a vehicle comprising :
- a light guide (2) with at least one light input surface (4), and
- a plurality of light emitting diodes (5) arranged such that the light of the light emitting diodes (5) is coupled in the light guide (2) via the light input surface (4) .
2. The lighting device (1) of claim 1, wherein
- a main surface (3) of the light guide (2) is a light throughput surface of lighting device (1),
- at least one side face (4) of the light guide (2) is the light input surface.
3. The lighting device (1) of claim 2, wherein the light throughput surface (3) has a rectangular shape and two side faces (4) of the light guide (2) are intended as light input surfaces, wherein each light input surface (2) is provided with a plurality of light emitting diodes (5) arranged such that their light is coupled in the light guide (2) via the light input surface (4) .
4. The lighting device (1) of one of claims 1 to 3, wherein the plurality of light emitting diodes (5) is mounted on a printed circuit board (6) .
5. The lighting device (1) of one of claims 1 to 4, wherein the light emitting diodes (5) emit white light during
operation .
6. The lighting device (1) of one of claims 1 to 5, wherein the light emitting diodes (5) are arranged in an equally spaced manner.
7. The lighting device (1) of one of claims 1 to 6, wherein the light guide (2) is a plastic board permeable for visible light .
8. Sun roof for (7) a vehicle comprising a lighting device (1) of one of claim 1 to 7.
9. The sun roof (7) of claim 8, further comprises a cover (8), which can be moved in order to let light from the exterior into the vehicle through the lighting device (1) .
10. The sun roof (7) of one of claims 7 to 9, wherein at least a part of the lighting device (1) is movable such that the sun roof (7) is in an opened state.
11. The sun roof (7) of claim 10, wherein the light guide (2) is movable such that the sun roof (7) is in an opened state.
12. The sun roof (7) of one of claims 7 to 11, wherein the light emitting diodes (5) of the lighting device (1) can be turned on by the help of a separate switch such that the inside of the vehicle is illuminated.
PCT/EP2011/072908 2011-01-31 2011-12-15 Lighting device for a sun roof of a vehicle and sun roof for a vehicle Ceased WO2012103984A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110036044.6 2011-01-31
CN2011100360446A CN102616178A (en) 2011-01-31 2011-01-31 Luminous device for sunroof of automobile and sunroof for automobile

Publications (1)

Publication Number Publication Date
WO2012103984A1 true WO2012103984A1 (en) 2012-08-09

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Application Number Title Priority Date Filing Date
PCT/EP2011/072908 Ceased WO2012103984A1 (en) 2011-01-31 2011-12-15 Lighting device for a sun roof of a vehicle and sun roof for a vehicle

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CN (1) CN102616178A (en)
WO (1) WO2012103984A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10358084B2 (en) 2017-11-08 2019-07-23 Ford Global Technologies, Llc Moon roof with integrated ambient lighting

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10195985B2 (en) * 2017-03-08 2019-02-05 Ford Global Technologies, Llc Vehicle light system
JP6744371B2 (en) * 2018-08-22 2020-08-19 矢崎総業株式会社 Vehicle interior lighting device and roof module
DE102019203502A1 (en) * 2019-03-14 2020-09-17 Volkswagen Aktiengesellschaft Lighting unit for a motor vehicle
CN114932790A (en) * 2022-06-08 2022-08-23 安徽山迪光能技术有限公司 Vehicle skylight
CN115042709A (en) * 2022-06-15 2022-09-13 上海宇宙电器有限公司 Skylight atmosphere lamp and using method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1022174A2 (en) * 1999-01-21 2000-07-26 DaimlerChrysler AG Sliding screen in the roof of a vehicle
DE10204359A1 (en) * 2001-03-25 2002-10-17 Webasto Vehicle Sys Int Gmbh Roof part for vehicle has light field beneath roof part formed by illuminating it with light from illumination device and bearer surface illuminated by light from source forms light panel
DE10313068A1 (en) * 2003-03-24 2004-12-09 Webasto Vehicle Systems International Gmbh Car sun roof has flat internal cover panel which acts as light source and contains electroluminescent layer between two outer layers
DE10320614A1 (en) * 2003-05-08 2004-12-09 Webasto Vehicle Systems International Gmbh Cover for an opening in the roof of a motor vehicle comprises a sheet which on the side facing the vehicle interior is provided with a transparent plate with cutouts for light sources
EP1903359A2 (en) * 2005-06-02 2008-03-26 Grupo Antolin-Ingenieria, S.A. Light for vehicle roofs
FR2937711A1 (en) * 2008-10-27 2010-04-30 Saint Gobain ELECTROLUMINESCENT DIODE MODULE FOR VEHICLE, DIODE SUPPORT

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009545488A (en) * 2006-08-01 2009-12-24 スリーエム イノベイティブ プロパティズ カンパニー Lighting device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1022174A2 (en) * 1999-01-21 2000-07-26 DaimlerChrysler AG Sliding screen in the roof of a vehicle
DE10204359A1 (en) * 2001-03-25 2002-10-17 Webasto Vehicle Sys Int Gmbh Roof part for vehicle has light field beneath roof part formed by illuminating it with light from illumination device and bearer surface illuminated by light from source forms light panel
DE10313068A1 (en) * 2003-03-24 2004-12-09 Webasto Vehicle Systems International Gmbh Car sun roof has flat internal cover panel which acts as light source and contains electroluminescent layer between two outer layers
DE10320614A1 (en) * 2003-05-08 2004-12-09 Webasto Vehicle Systems International Gmbh Cover for an opening in the roof of a motor vehicle comprises a sheet which on the side facing the vehicle interior is provided with a transparent plate with cutouts for light sources
EP1903359A2 (en) * 2005-06-02 2008-03-26 Grupo Antolin-Ingenieria, S.A. Light for vehicle roofs
FR2937711A1 (en) * 2008-10-27 2010-04-30 Saint Gobain ELECTROLUMINESCENT DIODE MODULE FOR VEHICLE, DIODE SUPPORT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10358084B2 (en) 2017-11-08 2019-07-23 Ford Global Technologies, Llc Moon roof with integrated ambient lighting

Also Published As

Publication number Publication date
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