DE19852593A1 - Arrangement for use as area light and as transparent glazing has variable transmissivity panel on one side of illuminated pane; panel is transparent when light source is switched off - Google Patents

Arrangement for use as area light and as transparent glazing has variable transmissivity panel on one side of illuminated pane; panel is transparent when light source is switched off

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Publication number
DE19852593A1
DE19852593A1 DE19852593A DE19852593A DE19852593A1 DE 19852593 A1 DE19852593 A1 DE 19852593A1 DE 19852593 A DE19852593 A DE 19852593A DE 19852593 A DE19852593 A DE 19852593A DE 19852593 A1 DE19852593 A1 DE 19852593A1
Authority
DE
Germany
Prior art keywords
panel
light
transparent
light source
switched
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19852593A
Other languages
German (de)
Other versions
DE19852593B4 (en
Inventor
Alfred Ott
Stefan Uhl
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.)
Daimler AG
Original Assignee
Daimler AG
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 Daimler AG filed Critical Daimler AG
Priority to DE19852593A priority Critical patent/DE19852593B4/en
Publication of DE19852593A1 publication Critical patent/DE19852593A1/en
Application granted granted Critical
Publication of DE19852593B4 publication Critical patent/DE19852593B4/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0041Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J3/00Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/04Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/20Arrangement 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
    • B60Q3/208Sun roofs; Windows
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02Combinations of only two kinds of elements
    • F21V13/08Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/003Controlling the distribution of the light emitted by adjustment of elements by interposition of elements with electrically controlled variable light transmissivity, e.g. liquid crystal elements or electrochromic devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/006General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/30Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides doped with fluorescent agents

Abstract

The arrangement has a pane (2) with a light source (3) on its reverse side, whereby the light from the source is coupled into the pane via its edge (7) and scattered into the pane from all directions at scattering points (4). A panel (5) mounted on one side of the pane can reflect light in one direction. The light transmissivity of this panel can be varied; it is transparent when the light source is switched off.

Description

Die Erfindung betrifft eine Vorrichtung zur Verwendung als Flä chenleuchte und als transparente Verglasung gemäß den gattungs bildenden Merkmalen des Anspruchs 1. The invention relates to a device for use as chenleuchte FLAE and as transparent glazing according to the generic-forming characteristics of claim 1.

Eine gattungsgemäße Vorrichtung, die als Flächenleuchte ausge bildet ist, ist aus der US 5,079,675 bekannt. A generic device which forms out as area light is known from US 5,079,675. Die Flächenleuch te hat eine gleichmäßige Lichtverteilung über eine Fläche und dient zur Beleuchtung eines Objektes oder eines Raumes. The Flächenleuch te has a uniform light distribution over an area and is used for illuminating an object or a room. Die Flächenleuchte weist mindestens eine Scheibe auf, wobei an we nigstens einer Seite der Scheibe eine Lichtquelle angeordnet ist, um welche ein Reflexionskörper angeordnet ist, der das Licht in die Scheibe reflektiert. The area light has at least one disk, said at we nigstens one side of the disc, a light source is disposed, around which a reflecting member is arranged, which reflects the light in the glass. In der Scheibe sind geneigte Reflexionsflächen vorgesehen, die parallel einfallendes Licht um einen 90° Winkel reflektieren, so daß das Licht in eine Vor zugsrichtung gerichtet abgestrahlt wird. In the disc inclined reflecting surfaces are provided, the incident light at a 90 ° angle to reflect in parallel so that the light is emitted in a directionally Before feed direction. Auf der gegenüberlie genden Seite der Vorzugsrichtung der transparenten Scheibe ist eine Reflexionsscheibe angeordnet, die das hierauf fallende Licht in die gewünschte abzustrahlende Richtung reflektiert, so daß eine gleichmäßige und intensive Lichtabstrahlung in eine Richtung erreicht wird. On the gegenüberlie constricting side of the preferential direction of the transparent plate, a reflection plate is arranged, which reflects the light incident thereon in the desired direction to be radiated, so that a uniform and intensive light emission is achieved in one direction.

Bei dieser Art einer Flächenleuchte ist von Nachteil, daß durch die Anordnung einer Reflexionsscheibe zur Reflexion des Lich tes in eine Vorzugsrichtung eine Lichtdurchlässigkeit durch den Gesamtaufbau nicht mehr gegeben ist. In this type of area light is a disadvantage that a light transmittance is no longer given by the overall structure by arranging a reflection plate for reflecting the Lich tes in a preferred direction. Die Reflexionsscheibe ist aber für eine gerichtete Abstrahlung unerlässlich. but the reflection plate is essential for directional radiation. Die Vorrich tung ist grundsätzlich auch bei ausgeschalteter Lichtquelle lichtundurchlässig. The Vorrich processing is basically opaque even when switched light source.

Die Aufgabe der Erfindung ist eine Vorrichtung so zu gestalten, daß sie gleichzeitig als Flächenleuchte und als transparente Scheibe verwendet werden kann. The object of the invention is to design a device so that they can simultaneously be used as a surface light and as a transparent disc.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des An spruchs 1 gelöst. According to the invention the object is achieved by the features of claim 1. An dissolved. Vorteilhafte Aus- und Weiterbildungen des Er findungsgegenstandes sind durch die Merkmale der Unteransprüche gekennzeichnet. Advantageous embodiments and further developments of the invention It article are characterized by the features of the subclaims.

Ein wesentlicher Vorteil dieser Ausgestaltungen liegt darin, daß die Flächenleuchte bei ausgeschalteter Lichtquelle licht durchlässig wird. A significant advantage of these embodiments is that the light-area light with switched light source is translucent. Sie bildet dann eine transparente Scheibe, die beispielsweise als Überkopfverglasung als Glasdach oder Schiebedach oder als Seiten- oder Heckverglasung in einem Fahr zeug oder auch als Gebäudeverglasung Verwendung findet. then forms a transparent disc convincing example as overhead glazing as a glass roof or sliding roof or side or rear windows in a driving or as a building glazing is used. Bei ausgeschalteter Lichtquelle ist die Vorrichtung transparent und lichtdurchlässig. With switched light source device is transparent and translucent. Beim Einschalten der Lichtquelle bildet die Vorrichtung eine Flächenleuchte, die eine große leuchtende hel le Flächenabstrahlung mit gutem Wirkungsgrad in eine vorgegebe ne Richtung hat. When switching on the light source, the device forms a surface light having a large luminous hel le surface emission with good efficiency in a pre give ne direction.

Die Erfindung wird anhand eines Ausführungsbeispieles in Ver bindung mit einer Figurenbeschreibung näher erläutert. The invention is explained with reference to an embodiment in greater detail, in conjunction with a figure description. Es zeigt It shows

Fig. 1 eine Seitenansicht der erfindungsgemäßen Vorrichtung, sowie Fig. 1 is a side view of the device according to the invention, and

Fig. 2 einen Querschnitt eines Glasdaches eines Fahrzeuges. Fig. 2 shows a cross section of a glass roof of a vehicle.

Fig. 1 zeigt eine Seitenansicht einer Vorrichtung 1 , die je nach Auswahl als Flächenleuchte oder als transparente Scheibe dient. Fig. 1 shows a side view of an apparatus 1 which serves as a surface light or as a transparent plate according to the selection. Die Vorrichtung 1 weist eine Platte 2 auf, in welche Streustellen 4 eingearbeitet sind, die das von wenigstens einer Lichtquelle 3 über die wenigstens eine plane oder gekrümmte Plattenkante 7 in die Platte 2 eingekoppelte Licht brechen und in verschiedene Richtungen streuen. The device 1 comprises a plate 2, in which scattering sites 4 incorporated to break the at least one light source 3 is coupled into the plate 2 over at least one plane or curved plate edge 7 and scatter light in different directions. Zur Erzielung einer gerich teten Abstrahlung ist an der entgegengesetzten Seite zur ge wünschten Abstrahlungsrichtung (längere Pfeilrichtung) eine Scheibe angeordnet, die auf sie fallendes Licht in Abstrah lungsrichtung reflektiert. To obtain a court ended radiation (longer direction of the arrow), there is arranged a disc on the opposite side to the ge desired radiation direction, the light incident direction lung reflected on it in Abstrah. Die Scheibe 5 ist grundsätzlich schaltbar zwischen spiegelnd/opak und transparent. The disc 5 is in principle switchable between specularly / opaque and transparent. Bei einge schalteter Lichtquelle 3 dient die Vorrichtung 1 als Flächen leuchte. With switched light source 3, the device 1 serves as a light space. Zur Reflexion des Lichts ist die Scheibe 5 an der zur Platte gerichteten Fläche spiegelnd oder opak. For reflecting the light the disc 5 on the side facing to the plate surface glossy or opaque. Das an den Streuzentren 4 gestreute Licht, das an der Scheibe 5 auftrifft, wird an dieser Scheibe 5 reflektiert und tritt durch die Platte 2 hindurch. The light scattered at the scattering centers 4 light incident on the disk 5 is reflected at the disc 5 and passes through the plate 2. So wird eine gleichmäßige Lichtverteilung über die gesamte Fläche erzielt. Thus, a uniform light distribution is achieved over the entire surface. Eine bessere Gleichmäßigkeit erhält man durch Anordnung einer weiteren Lichtquelle auf der gegenüber liegenden Seite der Lichtquelle 3 . Better uniformity is obtained by arrangement of a further light source on the opposite side of the light source. 3 Dies führt auch zu einer größeren Lichtausbeute. This also results in a greater light output. Bei ausgeschalteter Lichtquelle 3 dient die Vorrichtung als transparente Scheibe, wie sie beispielswei se als Überkopfverglasung in einem Fahrzeug Verwendung findet. With switched light source 3, the apparatus as se as overhead glazing in a vehicle is used beispielswei serves as a transparent pane. Die Scheibe 5 ist transparent und somit lichtdurchlässig ge schaltet. The disc 5 is transparent, and thus light permeable ge on. Bei Einbau der Vorrichtung 1 als Überkopfverglasung in einem Fahrzeug dient die Vorrichtung 1 bei Einschalten der Lichtquelle 3 als Flächenleuchte, deren Licht gleichmäßig über die Gesamtfläche verteilt den Fahrzeuginnenraum beleuchtet. When installing the apparatus 1 as overhead glazing in a vehicle, the device 1 for turning on the light source 3 is used as a surface light, the light uniformly distributed over the total area illuminated the vehicle interior. Bei ausgeschalteter Lichtquelle 3 ist die Scheibe 5 auf transparent geschaltet und es kann Licht von beiden Seiten durch die Vor richtung 1 treten. With switched light source 3, the disc is set to 5 transparent and light can enter from both sides by the pre direction. 1

Fig. 2 zeigt einen Querschnitt durch das Dach eines Fahrzeuges 6 , wobei die Vorrichtung 1 als Glasdach ausgebildet ist. Fig. 2 shows a cross section through the roof of a vehicle 6, the apparatus 1 is formed as a glass roof. Eine andere Anordnung wäre beispielsweise auch die Anordnung der Vorrichtung 1 als Schiebedach. Another arrangement would be, for example, the arrangement of the device 1 as a sunroof. Als Scheibe 5 sind alle Arten von Scheiben denkbar, deren Lichttransmission gezielt zwischen einem streuenden und/oder reflektierendem und einem transparen ten Zustand gesteuert werden kann. As disk 5 all kinds of discs are also possible, the light transmittance can be specifically controlled between a scattering and / or reflecting and a transparen th state. Bei ausgeschalteter Licht quelle 3 wird die Spannung so gewählt, daß die Scheibe 5 trans parent ist. With switched light source 3, the voltage is chosen so that the disk 5 is trans parent. Die Vorrichtung 1 bildet dann ein lichtdurchlässi ges Glasdach. The device 1 then forms a lichtdurchlässi ges glass roof. Die Platte 2 muß hierzu transparent sein. The plate 2 has to be this transparent. Die Transparenz der Platte 2 hängt von der Zahl der Streustellen 4 ab. The transparency of the plate 2 depends on the number of scattering sites. 4 Je größer die Zahl der Streustellen 4 , desto kleiner ist die Transparenz der Platte 2 . The greater the number of scattering sites 4, the smaller the transparency of the plate. 2 Es ist daher eine geeignete Zahl an Streustellen 4 vorgesehen, so daß eine genügende Transparenz der Platte 2 und damit eine genügend große Lichtdurchlässigkeit erhalten bleibt. A suitable number of scattering sites 4, it is therefore provided, so that a sufficient transparency of the plate 2 and thus obtain a sufficiently large light transmittance remains. Die mindestens eine Lichtquelle 3 ist seitlich der Platte 2 angeordnet und das Licht wird in die Plattenkante 7 eingekoppelt. The at least one light source 3 is arranged at the side of the plate 2 and the light is coupled into the panel edge. 7 Bei eingeschalteter Lichtquelle 3 dient die Vorrichtung 1 als Flächenleuchte, die den Innenraum beleuchtet. With switched light source 3, the device 1 serves as a surface light which illuminates the interior. Bei eingeschalteter Lichtquelle 3 ist die Spannung an der Scheibe 5 so gewählt, daß die Scheibe 5 spiegelnd oder opak ist. With switched light source 3, the voltage at the disc 5 is selected so that the disc is reflective or opaque. 5 Die Scheibe 5 reflektiert das von den Streustellen 4 auf die Scheibe 5 gestreute Licht, so daß das Licht mit der Vor zugsrichtung in Pfeilrichtung in den Fahrzeuginnenraum gestreut wird. The disc 5 reflects the light scattered by the scattering sites 4 on the disk 5 light so that the light is scattered with the pre feed direction in the arrow direction in the vehicle interior.

Andere Anwendungen wie die Benutzung der Vorrichtung in Gebäu den, beispielsweise als Lichtschachtverglasungen sind denkbar. Other applications such as the use of the device in the buil, for example as glazings light shaft are also conceivable.

Claims (7)

1. Vorrichtung ( 1 ), die eine Platte ( 2 ) aufweist, an deren Stirnseite eine Lichtquelle ( 3 ) angeordnet ist, wobei das von der Lichtquelle ( 3 ) erzeugte Licht über die Plattenkante ( 7 ) in die Platte ( 2 ) eingekoppelt und an Streustellen ( 4 ) in der Platte ( 2 ) nach allen Richtungen gestreut wird, wobei auf einer Seite der Platte ( 2 ) eine Scheibe ( 5 ) angeordnet ist, die Licht in eine Richtung reflektieren kann, dadurch gekennzeichnet , daß die Lichtdurchlässigkeit der Scheibe ( 5 ) veränderbar ist. 1. A device (1) comprising a plate (2), on the end face of a light source (3) is arranged, from the light source (3) coupled light generated on the plate edge (7) in the plate (2) and at scattering sites (4) is scattered in the plate (2) in all directions, wherein a disc (5) is arranged on one side of the plate (2) which can reflect the light in one direction, characterized in that the light transmittance of the disc (5) is variable.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Scheibe ( 5 ) bei ausgeschalteter Lichtquelle ( 3 ) trans parent und lichtdurchlässig ist. 2. Device according to claim 1, characterized in that the disc (5) with switched light source (3) trans parent and translucent.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Scheibe ( 5 ) bei eingeschalteter Lichtquelle ( 3 ) opak oder spiegelnd ist und auffallendes Licht reflektiert. 3. A device according to claim 1, characterized in that the disc (5) with active light source (3) is opaque or specularly reflected and incident light.
4. Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Vorrichtung ( 1 ) als Überkopfverglasung in einem Fahr zeugdach ( 6 ) angeordnet ist. 4. Device according to claims 1 to 3, characterized in that the device (1) as an overhead glazing in a driving-generating roof (6) is arranged.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Vorrichtung ( 1 ) bei ausgeschalteter Lichtquelle ( 3 ) ein Glasdach und bei eingeschalteter Lichtquelle ( 3 ) eine den In nenraum ausleuchtende Flächenleuchte bildet. 5. The device according to claim 4, characterized in that the device (1) with switched light source (3) is a glass roof and with switched light source (3) forms the inner space illuminating area light.
6. Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Vorrichtung ( 1 ) als Seiten- oder Heckverglasung in ei nem Fahrzeug angeordnet ist. 6. Device according to claims 1 to 3, characterized in that the device (1) is arranged as NEM vehicle side or rear windows in egg.
7. Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Vorrichtung ( 1 ) als Bauverglasung in Gebäuden angeord net ist. 7. Device according to claims 1 to 3, characterized in that the device (1) as architectural glazing in buildings angeord net.
DE19852593A 1998-11-14 1998-11-14 An apparatus for lighting an interior space and their use Expired - Fee Related DE19852593B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19852593A DE19852593B4 (en) 1998-11-14 1998-11-14 An apparatus for lighting an interior space and their use

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DE19852593A1 true DE19852593A1 (en) 2000-05-25
DE19852593B4 DE19852593B4 (en) 2006-03-30

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US8708521B2 (en) 2009-04-30 2014-04-29 Saint-Gobain Glass France Pane assembly
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WO2012139787A1 (en) 2011-04-11 2012-10-18 Saint-Gobain Glass France Illuminated double glazing
US9448357B2 (en) 2011-04-11 2016-09-20 Saint-Gobain Glass France Illuminated facade arrangement
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DE102012215165A1 (en) 2012-08-27 2014-02-27 Lisa Dräxlmaier GmbH Decorative composite for use in decorative elements in vehicles, has light-emitting layer relative to decorative layer is movable
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WO2017167945A1 (en) * 2016-03-31 2017-10-05 E.I.S. Aircraft Gmbh Vehicle device and method using a vehicle device
DE102016225413A1 (en) * 2016-12-19 2018-07-05 Volkswagen Aktiengesellschaft Interior trim part for a motor vehicle
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