EP1361391B1 - Lampe pour l'éclairage d'un poste de travail - Google Patents

Lampe pour l'éclairage d'un poste de travail Download PDF

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Publication number
EP1361391B1
EP1361391B1 EP03004083A EP03004083A EP1361391B1 EP 1361391 B1 EP1361391 B1 EP 1361391B1 EP 03004083 A EP03004083 A EP 03004083A EP 03004083 A EP03004083 A EP 03004083A EP 1361391 B1 EP1361391 B1 EP 1361391B1
Authority
EP
European Patent Office
Prior art keywords
light
lighting means
luminaire
work surface
lamp
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.)
Expired - Lifetime
Application number
EP03004083A
Other languages
German (de)
English (en)
Other versions
EP1361391A2 (fr
EP1361391A3 (fr
Inventor
Katharina Keller
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.)
ZUMTOBEL LIGHTING GmbH
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP1361391A2 publication Critical patent/EP1361391A2/fr
Publication of EP1361391A3 publication Critical patent/EP1361391A3/fr
Application granted granted Critical
Publication of EP1361391B1 publication Critical patent/EP1361391B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/402—Lighting for industrial, commercial, recreational or military use for working places
    • 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
    • F21Y2105/00—Planar light sources
    • 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]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the present invention relates to a luminaire for illuminating a workstation with a flat illuminant.
  • ceiling lights are generally used, which illuminate the rooms as a whole.
  • a general room lighting is often not sufficient. Rather, an individual lighting of the workplace is required, which is obtained by additional lights.
  • table lamps which have an adjustable lamp arm, at the end of which is arranged in a reflector light source.
  • This lighting arm has a disturbing effect insofar as it requires a certain amount of space at the desk.
  • the light source is an additional heat source located approximately at head height, which interferes with the work in the workplace.
  • this luminous means may be an electroluminescent luminous layer made of an inorganic or an organic semiconductor material.
  • the luminescent layers of an inorganic semiconductor material represent a further development of the known point-shaped LEDs, the luminescent means consisting of an organic semiconductor layer are often also referred to as so-called OLEDs (organic LEDs).
  • OLEDs organic LEDs
  • Luminaires with such flat bulbs are for example from the DE 198 26 548A1 or the EP 0 756 132 A1 known. Compared with the conventional luminaires with incandescent bulbs or fluorescent tubes as light sources, these luminaires are characterized by their shallow depths with flat illuminants. Since both the organic and the inorganic bulbs are very flat, lights can be created, which have a total depth of only 0.5 to 3 cm. Another advantage of such lights is the comparatively very small heat development.
  • JP 2001-325805 A is a hinged floor lamp for lighting a work surface known.
  • the lamp can be placed in the unfolded state on the work surface, so that a light source of the lamp is arranged perpendicular to the plane of the work surface and the light emitted by the light source is emitted to the work surface.
  • a device for the illumination of theaters, TV studios or the like which has a surface element, which is designed as a light-emitting light-emitting diode.
  • the surface element can be arranged perpendicular to a work surface, so that the lamp is designed such that the light emitted by the light source is emitted to the plane perpendicular to the plane of the working surface.
  • a prismatic plate which is suitable as a light guide plate, for example, for a flat, electroluminescent light source.
  • the plate has a prism structure on its side facing away from the light source.
  • the radiation can preferably be directed in a direction that differs from the direction of the surface normal.
  • this prismatic plate the radiation in certain directions, in which no radiation is necessary to be weakened.
  • a vehicle headlamp is described with a light source in the form of a flexible LED, which can be adapted to wide areas of the surface of a body.
  • a workplace lamp in the form of a flat, downward-emitting light box is known.
  • a tubular light-emitting means is arranged between a rear plate and a rear side illuminated, in front of the rear side illuminated glass plate, wherein on the glass plate is a prism sheet.
  • the present invention has for its object to provide a luminaire with a flat illuminant, which is suitable for illuminating workstations.
  • a luminaire which has the features of claim 1. This is characterized by the fact that the light emitted by the planar illuminant is radiated onto a plane which is substantially perpendicular to the plane of the illuminant and which represents the work surface to be illuminated.
  • the luminaire thus has an asymmetrical light emission which ensures that the light emitted by the luminous means is only used to illuminate the workstation and does not lead to disruptive glare effects for a user located at the workstation.
  • the luminaire according to the invention can be arranged, for example, on the edge of a work table. Due to its very small depth, it takes up little space and therefore has less disturbing effect than conventional table lamps.
  • the desired asymmetrical emission characteristic of the luminaire according to the invention can be achieved, for example, by arranging a light guide plate in front of the planar luminous means, which deflects the light emitted by the luminous means onto the work surface to be illuminated.
  • the deflection of the light can be obtained, for example, by means of a prism structure arranged at the light exit surface or the side of the light guide plate facing away from the light source.
  • An alternative possibility is to bend the light source at its end remote from the worktop to be illuminated facing the work surface.
  • an opaque back plate is provided on the back of the lamp, which prevents unwanted emission of light to the back.
  • the luminous means can be, for example, a layer of an inorganic semiconductor material or of an organic semiconductor material. In both cases, it is possible to change the color temperature of the emitted light by changing the field strength applied to the semiconductor layer.
  • An advantageous development of the luminaire according to the invention then consists in using a device for manual adjustment of the light color, for example a switch or rotary control. Alternatively, however, the control of the optical fiber can also be done via a sensor.
  • the lamp 1 is provided for illuminating a workplace 6 in the form of a desk 7.
  • the lamp 1 is arranged in the example shown on a longitudinal side of the desk 7 and has the shape of a flat rectangular disk.
  • other shapes for the lamp 1 would be conceivable. For example, this could have a circular shape or the shape of an ellipse.
  • the lamp 1 is perpendicular to the illuminated table top 8 of the desk 7.
  • the radiation of the light emitted by the luminaire 1 is such that the light falls exclusively on the table plate 8 arranged perpendicular to the luminaire 1, so that a trapezoidal region 9 is illuminated on it.
  • a radiation perpendicular to the plane of the lamp 1, however, does not occur, so that a person sitting on the opposite longitudinal side of the desk 7 person is not dazzled.
  • Fig. 2 shows the structural design of the luminaire 1 according to the invention.
  • the light is thereby generated a flat layer of a planar luminous means 2.
  • This luminous means 2 is an electroluminescent layer of an inorganic or organic semiconductor material, for example a thin OLED film.
  • On both sides of this layer 2 are electrode layers (not shown), with the aid of which an electric field applied across the semiconductor layer 2 is generated.
  • This electric field is responsible for the light generation in the semiconductor layer 2.
  • the color of the light generated by the light source 2 is influenced, inter alia, by the field strength of the electric field. There is thus the possibility of adjusting the color temperature of the light emitted by the lamp 1 individually, which can be done for example by a manual control of the electric field strength or automatically via a corresponding sensor.
  • a light source 2 arranged in front of the light source
  • This consists of a transparent material, such as plastic or glass and has a prism structure 5 on its light exit side.
  • the preferably integrally connected to the plate-shaped core of the light guide plate 4 micro-prisms 5 have an asymmetric structure, so that emerging from the micro-prisms 5 light rays are broken down or in the direction of the working surface to be illuminated. In Fig. 2 this is illustrated by way of example with reference to the light beam S 1.
  • an opaque back plate 3 is arranged, which prevents radiation of light to the rear.
  • the entire structure has a very small depth of, for example, 5mm to 3cm.
  • the light guide plate 4, at the back of the lamp 2, the associated electrode layers and the back plate 3 can be applied in the form of thin films.
  • a second embodiment of a luminaire according to the invention is in Fig. 3 shown.
  • the lamp 11 is curved at its end facing away from the working surface 8 to be illuminated end to the work surface 8 out.
  • the steering of the light emitted from the lamp 11 light is improved on the table top. It is then even possible to dispense with the above-explained light guide plate with the micro-prism structure.
  • the use of such a light-deflecting plate is also advantageous in this exemplary embodiment, since the radiation of the light emitted by the luminaire 1 is thereby better determined and the trapezoidal region 12 produced on the working surface 8 can be specified better.
  • the luminaire has in this case an identical structure as in Fig. 1 and 2 illustrated light.
  • the present invention thus provides an extremely flat luminaire for illuminating a workstation which requires little space and at the same time provides optimal illumination.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Planar Illumination Modules (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Claims (7)

  1. Lampe (1, 11) pour l'éclairage d'une surface de travail (8) avec un moyen d'éclairage (2) plan,
    caractérisée en ce
    que la lampe (1, 11) est configurée de telle sorte que la lumière (S1) dégagée par le moyen d'éclairage (2) est émise de manière asymétrique et est émise sur la surface de travail (8) disposée essentiellement perpendiculairement au plan du moyen d'éclairage (2),
    le moyen d'éclairage (2) étant courbé sur son extrémité éloignée de la surface de travail (8) à éclairer vers la surface de travail (8).
  2. Lampe selon la revendication 1,
    caractérisée en ce
    qu'en amont du moyen d'éclairage (2) est disposée une plaque guidant la lumière (4) se composant d'un matériau transparent, qui guide la lumière (S1) dégagée par le moyen d'éclairage (2) sur la surface de travail (8) à éclairer.
  3. Lampe selon la revendication 2,
    caractérisée en ce
    que la plaque guidant la lumière (4) présente sur son côté éloigné du moyen d'éclairage (2) une structure prismatique (4).
  4. Lampe selon la revendication 3,
    caractérisée en ce
    que la structure prismatique (4) est reliée d'un seul tenant au coeur en forme de plaque de la plaque guidant la lumière (4).
  5. Lampe selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    que celle-ci présente sur le côté arrière du moyen d'éclairage (2) une plaque arrière (3) opaque.
  6. Lampe selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'il s'agit pour le moyen d'éclairage (2) d'une couche en un matériau semi-conducteur anorganique.
  7. Lampe selon l'une quelconque des revendications 1 à 5,
    caractérisée en ce
    qu'il s'agit pour le moyen d'éclairage (2) d'un film en un matériau semi-conducteur organique.
EP03004083A 2002-05-08 2003-02-25 Lampe pour l'éclairage d'un poste de travail Expired - Lifetime EP1361391B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10220588 2002-05-08
DE10220588A DE10220588A1 (de) 2002-05-08 2002-05-08 Leuchte zur Arbeitsplatzbeleuchtung

Publications (3)

Publication Number Publication Date
EP1361391A2 EP1361391A2 (fr) 2003-11-12
EP1361391A3 EP1361391A3 (fr) 2006-04-12
EP1361391B1 true EP1361391B1 (fr) 2010-04-28

Family

ID=7714504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004083A Expired - Lifetime EP1361391B1 (fr) 2002-05-08 2003-02-25 Lampe pour l'éclairage d'un poste de travail

Country Status (4)

Country Link
EP (1) EP1361391B1 (fr)
AT (1) ATE466230T1 (fr)
DE (2) DE10220588A1 (fr)
NO (1) NO334160B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9523487B1 (en) 2011-05-17 2016-12-20 Pixi Lighting, Inc. Flat panel lighting device and driving circuitry
US10215911B2 (en) 2013-04-17 2019-02-26 Unity Opto Technology Co., Ltd. Lighting assembly

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2363632A1 (fr) * 2010-03-05 2011-09-07 Pöllet, Wilfried Dispositif d'éclairage d'une plaque de travail
TWI416049B (zh) * 2010-09-10 2013-11-21 Young Lighting Technology Corp 光源裝置及光源裝置的使用方法
DE102011079012A1 (de) * 2011-07-12 2013-01-17 Ledon Oled Lighting Gmbh & Co. Kg Leuchtmodul mit steuerbarer Lichtlenkung
TWM422633U (en) * 2011-09-22 2012-02-11 Arex Twn Internat Co Ltd The luminaire with asymmetric luminous intensity
US9476552B2 (en) 2013-04-17 2016-10-25 Pixi Lighting, Inc. LED light fixture and assembly method therefor
US9546781B2 (en) 2013-04-17 2017-01-17 Ever Venture Solutions, Inc. Field-serviceable flat panel lighting device
EP3017242A1 (fr) * 2013-05-31 2016-05-11 3M Innovative Properties Company of 3M Center Luminaire pour passage piéton
US9557022B2 (en) 2015-04-30 2017-01-31 Ever Venture Solutions, Inc. Non-round retrofit recessed LED lighting fixture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPM483294A0 (en) * 1994-03-31 1994-04-28 Chulalongkorn University Amorphous semiconductor thin film light emitting diode
IT1280453B1 (it) 1995-07-28 1998-01-20 Carello Spa Fanale per autoveicoli di spessore ridotto.
DE29621619U1 (de) * 1996-12-12 1997-02-27 Siemens AG, 80333 München Vorrichtung zur Beleuchtung von Theaterbühnen, TV-Studios o.dgl.
DE19826548A1 (de) 1998-02-05 1999-08-12 Zumtobel Staff Gmbh Beleuchtungsanordnung
DE10042651C2 (de) * 2000-05-08 2002-10-02 Poellet Wilfried Arbeitsplatzbeleuchtung
JP2001325805A (ja) * 2000-05-15 2001-11-22 Matsushita Electric Works Ltd スタンド形照明器具
JP2001357978A (ja) * 2000-06-16 2001-12-26 Kuraray Co Ltd 面状光源装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9523487B1 (en) 2011-05-17 2016-12-20 Pixi Lighting, Inc. Flat panel lighting device and driving circuitry
US9976732B2 (en) 2011-05-17 2018-05-22 Unity Opto Technology Co., Ltd. Flat panel lighting device and driving circuitry
US10215911B2 (en) 2013-04-17 2019-02-26 Unity Opto Technology Co., Ltd. Lighting assembly

Also Published As

Publication number Publication date
DE50312651D1 (de) 2010-06-10
EP1361391A2 (fr) 2003-11-12
DE10220588A1 (de) 2003-11-20
ATE466230T1 (de) 2010-05-15
EP1361391A3 (fr) 2006-04-12
NO20032047D0 (no) 2003-05-07
NO334160B1 (no) 2013-12-23
NO20032047L (no) 2003-11-10

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