EP1256972A2 - Dispositif d'éclairage plat à surface réfléchissante - Google Patents

Dispositif d'éclairage plat à surface réfléchissante Download PDF

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Publication number
EP1256972A2
EP1256972A2 EP02008313A EP02008313A EP1256972A2 EP 1256972 A2 EP1256972 A2 EP 1256972A2 EP 02008313 A EP02008313 A EP 02008313A EP 02008313 A EP02008313 A EP 02008313A EP 1256972 A2 EP1256972 A2 EP 1256972A2
Authority
EP
European Patent Office
Prior art keywords
lighting device
vessel
plates
mirror surface
lighting
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.)
Withdrawn
Application number
EP02008313A
Other languages
German (de)
English (en)
Other versions
EP1256972A3 (fr
Inventor
Udo Custodis
Michael Dr. Seibold
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1256972A2 publication Critical patent/EP1256972A2/fr
Publication of EP1256972A3 publication Critical patent/EP1256972A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/025—Associated optical elements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
    • A47G1/02—Mirrors used as equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/305—Flat vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
    • H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel

Definitions

  • the invention relates to a flat lighting device, except one Lighting function also has a mirror function, i.e. the lighting device can also be used as an illuminated mirror.
  • Illuminable mirrors are usually realized in that outside the actual mirror surface, for example laterally or above the Mirror surface, one or more separate lights are arranged.
  • the principally shallow installation depth of a mirror is due to the dimensions of the separate luminaire (s) used for the lighting not usable.
  • Suitable lights typically include at least a lamp including lamp holder and any associated Lamp reflector, a lamp housing or a lamp cover and in the case of the use of discharge lamps, for example fluorescent lamps, additionally an electrical control gear.
  • the invention proposes mirrors made up of several separate components a flat lighting device with an integrated mirror surface in front.
  • the lighting device according to the invention is based on a flat lamp, comprising a base plate and a front plate that at least one partially transparent vessel connected to it inside has an ionizable filling.
  • connection can be realized for example by means of a frame, which is arranged between and connected to the two plates.
  • the frame also defines the mutual distance between the both essentially plan plates.
  • the frame usually runs along the edge areas of both panels around the entire area Use both plates as completely as possible for the formation of the vessel to be able to.
  • the frame can be dispensed with if at least one of the two Plates are suitably convex in their edge area, so the two Form the assembled plates without a frame.
  • only a partial area of the vessel is used to implement the Lighting function trained.
  • This sub-area preferably extends along at least part of the edge region of the vessel.
  • the area of the vessel is at least one of the two plates at least partially provided with a mirror surface.
  • the vessel can also be divided into two or more chambers, which are the areas designed for the mirror and lighting functions separate the flat lighting device from each other.
  • the ionizable filling to that for the lighting function to restrict the trained area, i.e. only the corresponding one (s) Chamber (s) with the ionizable intended for the discharge Filling to fill.
  • the chamber enclosing the mirror surface can be filled with a cheaper gas (mixture), for example Nitrogen or dried air.
  • the flat lamp of the lighting device according to the invention is particularly preferred of the type of dielectric barrier discharge lamp, also called dielectric barrier discharge lamp.
  • this flat lamp type is at least a part of the electrodes from the filling of the discharge vessel separated by a dielectric.
  • the electrodes are for that either arranged on the outer surface of the discharge vessel as in the EP 0 839 436 B1 discloses, wherein the wall of the discharge vessel itself as said dielectric acts. Or the electrodes are on the inner surface of the discharge vessel, in which case the electrodes are additionally covered with a dielectric layer as in the WO 98/43277 discloses.
  • the electrodes are usually in the form of conductor tracks Structures formed on the inner surface, for example Screen printing are applied. Similarly, these are strip-like Electrodes printed with the dielectric layer. For more details for this, reference is made to WO 99/66538.
  • This type of lamp is preferred in accordance with that disclosed in EP 0 0733 266 B1 pulsed operating processes because it is particularly efficient has proven compared to the conventional mode of operation of dielectric disabled discharges with sinusoidal AC voltage. In any case the polarity of neighboring electrodes is selected alternately. As a result, the discharge burns between adjacent electrodes.
  • a partial area of at least one of the two plates is with the mirror surface mentioned Mistake. While this mirrored section in a conventional manner acts as a mirror, the non-mirrored section is used for the realization the lighting function, i.e. used as a lamp. For this purpose the non-mirrored section with the above-mentioned electrode structure and printed on the dielectric layer. Only takes place in this section during operation the gas discharge takes place alone or in connection with a on the wall of the discharge tube applied phosphor layer generated light required for the lighting function.
  • Another advantage is that the lighting device is easy to clean, because the entire front, i.e. Mirror area including lamp area is limited by the flat one-piece front panel.
  • the area of the mirrored partial area typically corresponds to more than 50%, better more than 60%, preferably more than 70%, particularly preferred more than 80% of the front surface of the front panel, on the one hand for the Use a sufficiently large mirror surface with respect to that for the whole To be able to provide the lighting device required area.
  • the area of the non-mirrored section that functions as a lamp be large enough to provide sufficient and as uniform to ensure shadow-free lighting. From that point of view it has proven itself if the area functioning as a lamp is more than 5%, better approx. 10% or more corresponds to the front surface of the front plate.
  • Figures 1a to 1c schematically show a plan view, a sectional view along the line AB and an enlarged section of a section C of a lighting device 1 according to the invention, comprising a rectangular base plate 2, such a front plate 3, a frame 4 and two partitions 5a, 5b.
  • the components 2 to 5 mentioned are all made of glass.
  • the one running around the edges of base plate 2 and front plate 3 Frame 4 connects these two plates 2, 3 to a flat vessel.
  • the two partitions 5a, 5b divide this vessel 2, 3, 4 into three cuboid Chambers 6 to 8.
  • the two outer chambers 6, 8 are the same size, elongated and extend along two opposite narrow sides the flat lighting device 1.
  • Each of the two outer chambers 6, 8 serves as a discharge vessel in each case an elongated partial flat lamp, i.e. ultimately to implement the lighting function. Further explanations this will follow below.
  • the middle chamber 7 is significantly larger as the two outer chambers 6, 8 and serves as a mirror. To this The purpose is the inner surface of the base plate 2 in the area of the middle chamber 7 vaporized with a mirror surface 9.
  • the mirror surface 9 corresponds approximately 90% of the base area of the front panel 3.
  • the two outer chambers 6, 8 are filled with xenon at a cold filling pressure of approx. 10 kPa. Due to the use of relatively expensive xenon, the subdivision of the vessel into chambers 6 - 8 has the advantage that the amount of xenon required can be limited to these chambers 6, 8 which act as discharge vessels. If such cost considerations are irrelevant, spatial division into chambers can also be dispensed with and the entire vessel 2, 3, 4 filled with xenon.
  • strip-like electrodes 10 made of silver solder are printed on the inner surface of the base plate 2 and are covered with a glass solder layer 11 acting as a dielectric barrier.
  • a phosphor layer 12 is applied to the inner surface of the front panel 2 within each outer chamber 6, 8.
  • the phosphor layer 12 consists of a three-band phosphor mixture with which white light can be generated.
  • the phosphor layer 12 converts the ultraviolet radiation (UV) generated during discharge within each outer chamber 6, 8 into visible light.
  • the UV radiation here is molecular band radiation with a maximum at approximately 172 nm, which is emitted by Xe 2 * excimers formed in the discharge.
  • the total area of the phosphor layer 12 corresponds to approximately 10% of the base area of the front plate 3. Essentially the entire remaining part of the base area, ie approximately 90%, functions as a mirror due to the mirror surface 9.
  • two are Lamp acting, in the plan view of Fig. 1a strip-shaped sections used.
  • This has opposite an alternatively pure widening of the strip-shaped partial areas the advantage of cheaper lighting distribution.
  • You also have to the sub-areas mentioned are not necessarily strip-shaped but can rather have almost any contours.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
EP02008313A 2001-05-08 2002-04-11 Dispositif d'éclairage plat à surface réfléchissante Withdrawn EP1256972A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10122211 2001-05-08
DE10122211A DE10122211A1 (de) 2001-05-08 2001-05-08 Flache Beleuchtungsvorrichtung mit Spiegelfläche

Publications (2)

Publication Number Publication Date
EP1256972A2 true EP1256972A2 (fr) 2002-11-13
EP1256972A3 EP1256972A3 (fr) 2005-11-09

Family

ID=7683947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02008313A Withdrawn EP1256972A3 (fr) 2001-05-08 2002-04-11 Dispositif d'éclairage plat à surface réfléchissante

Country Status (5)

Country Link
US (1) US6630769B2 (fr)
EP (1) EP1256972A3 (fr)
CA (1) CA2385407A1 (fr)
DE (1) DE10122211A1 (fr)
NO (1) NO20022190L (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2882423B1 (fr) * 2005-02-22 2007-03-30 Saint Gobain Structure lumineuse plane ou sensiblement plane
US8021004B2 (en) * 2007-01-13 2011-09-20 Jacek Helenowski Mirrored element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0733266A1 (fr) 1993-04-05 1996-09-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procede permettant de faire fonctionner une source de rayonnenent a emission incoherente
WO1998043277A2 (fr) 1997-03-21 1998-10-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Tube fluorescent plat destine a l'eclairage de fond et dispositif d'affichage a cristaux liquides dote de ce tube fluorescent plat
WO1999066538A1 (fr) 1998-06-16 1999-12-23 Patent-Treuhand-Gesellschaft Für Elektrische Glühlampen Couche dielectrique pour lampes a decharge, et son procede de realisation
EP0839436B1 (fr) 1995-07-18 2000-09-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procede permettant de faire fonctionner un systeme d'eclairage et systeme d'eclairage associe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2272335A1 (en) * 1974-05-20 1975-12-19 Leflon Maurice Mirror with illumination - has lamps behind shining on user's face from both sides
GB8903118D0 (en) * 1989-02-11 1989-03-30 Smiths Industries Plc Radiation emissive devices

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0733266A1 (fr) 1993-04-05 1996-09-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procede permettant de faire fonctionner une source de rayonnenent a emission incoherente
EP0839436B1 (fr) 1995-07-18 2000-09-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procede permettant de faire fonctionner un systeme d'eclairage et systeme d'eclairage associe
WO1998043277A2 (fr) 1997-03-21 1998-10-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Tube fluorescent plat destine a l'eclairage de fond et dispositif d'affichage a cristaux liquides dote de ce tube fluorescent plat
WO1999066538A1 (fr) 1998-06-16 1999-12-23 Patent-Treuhand-Gesellschaft Für Elektrische Glühlampen Couche dielectrique pour lampes a decharge, et son procede de realisation

Also Published As

Publication number Publication date
EP1256972A3 (fr) 2005-11-09
US6630769B2 (en) 2003-10-07
CA2385407A1 (fr) 2002-11-08
NO20022190D0 (no) 2002-05-07
NO20022190L (no) 2002-11-11
US20020180341A1 (en) 2002-12-05
DE10122211A1 (de) 2002-11-14

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