WO2007104729A1 - Illuminating mirror - Google Patents

Illuminating mirror Download PDF

Info

Publication number
WO2007104729A1
WO2007104729A1 PCT/EP2007/052268 EP2007052268W WO2007104729A1 WO 2007104729 A1 WO2007104729 A1 WO 2007104729A1 EP 2007052268 W EP2007052268 W EP 2007052268W WO 2007104729 A1 WO2007104729 A1 WO 2007104729A1
Authority
WO
WIPO (PCT)
Prior art keywords
mirror
leds
mirror according
radiation
emitting
Prior art date
Application number
PCT/EP2007/052268
Other languages
French (fr)
Inventor
Hugues Lefevre
Original Assignee
Agc Flat Glass Europe Sa
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 Agc Flat Glass Europe Sa filed Critical Agc Flat Glass Europe Sa
Publication of WO2007104729A1 publication Critical patent/WO2007104729A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
    • B44F1/04—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces after passage through surface layers, e.g. pictures with mirrors on the back
    • B44F1/045—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces after passage through surface layers, e.g. pictures with mirrors on the back having mirrors or metallic or reflective layers at the back side
    • 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

Definitions

  • the present invention relates to a glass illuminating mirror delivering light radiation generated on its perimeter by LEDs in which the density of the radiation is well distributed over an entire illuminating peripheral zone.
  • An illumination device comprising a transparent glass support panel coated with electrically conducting bands on which light-emitting diodes are mounted, emitting their light through the transparent support, is known (Patent US 6 270 236 Bl) .
  • this known device appears to be a panel formed from a multitude of very bright light spots in line with the light-emitting diodes separated by black or very dark zones. This results in an effect not very conducive to use of the panel in applications for illumination or for decoration.
  • the invention remedies this drawback by providing an illuminating mirror that is a glass panel comprising a multitude of LEDs generating light radiation, the radiation density of which is well distributed over the entire illuminating surface of the panel.
  • the invention relates to a mirror emitting light radiation, as defined in Claim 1.
  • the invention may also provide one or more of the following advantages : • the radiation density is better distributed over the illuminating area of the panel;
  • the light-radiation-emitting mirror according to the invention is composed of at least one glass sheet.
  • glass sheet is understood to mean any glass plate with a thickness possibly ranging between 1 and 50 mm. The thickness may vary at different points on the surface of the sheet. The surface may be flat or curved. However, flat sheets of glass having the same thickness at every point on the surface are preferred. It does not matter whether the glass consists of one or several types of known glass, such as soda-lime glass, borosilicate glass, crystalline and semicrystalline glass, or opal glass. The colour of the glass may be neutral (transparent or grey glass) or of greater or lesser saturation (bulk-tinted or surface-tinted with a shade that may range from red to violet) .
  • the colour may be uniformly distributed over the entire surface of the sheet or, on the contrary, it may be localized in one or more particular zones of the surface of the panel.
  • Sheets of glass that are uniformly neutral or uniformly coloured over the entire surface or the thickness of the sheet are preferred.
  • the glass of the sheet may also be transparent or, on the contrary, be relatively filtering for light radiation lying below and above the frequencies of the visible spectrum.
  • the mirror according to the invention is also composed of a plurality of light-emitting diodes (LEDs) that generate light radiation.
  • LEDs light-emitting diodes
  • the term "light radiation” is understood to mean both radiation belonging to the visible spectrum and radiation outside this spectrum. Such radiation may be perfectly monochromatic or, on the contrary, it may be distributed over one or more contiguous or non- contiguous frequency bands.
  • These components may be chosen from various LEDs having optoelectronic properties and from components capable of emitting radiation outside that populating the visible spectrum, but optionally with radiation falling within this spectrum. These are for example LED diodes emitting in the visible spectrum and UV and/or visible and/or IR diodes .
  • the light radiation generated by the LEDs has a wavelength lying between 200 nm and 1 mm.
  • the light radiation is radiation belonging to the visible spectrum.
  • the light radiation may also advantageously include at least part of the visible spectrum and at least part of the infrared and/or ultraviolet spectrum.
  • the LEDs are placed inside the mirror, that is to say they are placed on a surface internal to the mirror that has no contact with its external environment.
  • the mirror comprises an assembly of at least one emitting structure with at least one reflecting structure.
  • emitting structure is understood to mean any structure comprising the glass sheet (s) and the LEDs.
  • reflecting structure denotes any structure capable of reflecting at least some of the radiation emitted by the emitting structure. The reflection of the emitted radiation may be total or partial, the remainder of the radiation being absorbed by and/or transmitted through the reflecting structure. Reflecting structures that have a light reflection factor ranging from 35.0 to 99.9% are generally preferred.
  • Examples of preferred emitting structures are flat glass sheets bearing the LEDs on their surface.
  • the reflecting structure is a metal surface parallel to the emitting structures.
  • the emitting and reflecting structures of the mirror according to the invention are in contact with one another.
  • the emitting structure is assembled by lamination with the reflecting structure.
  • the LEDs comprise directional radiation generators. These components are oriented so that the direction of the radiation is perpendicular or close to perpendicular to the surface of the reflecting structure.
  • the reflecting structure is a mirror selected from those comprising a reflecting metal surface.
  • the metal of the reflecting surface is advantageously a film of silver or a silver alloy.
  • the metal film has a thickness that may generally range from 70 to 120 nm.
  • the laminated assembly that the mirror forms is provided with dispersion means for dispersing the light radiation peripherally.
  • This dispersion means is a sheet of clear glass, the surface of which has been frosted or sandblasted in the peripheral zone, on the external side of the laminated assembly, the side opposite that of the reflecting structure relative to the emitting structure.
  • the frosting may have been carried out for example by means of an aqueous hydrofluoric acid solution.
  • peripheral zone is understood to mean a relatively broad zone lying on the border of the mirror surrounding a central zone of the mirror that distinctly reflects the images of objects facing it and in line with which the clear glass is neither frosted nor sandblasted.
  • a sheet of plastic chosen from polyesters is laminated between the glass sheet of the emitting structure, on which the LEDs lie, and the peripherally frosted sheet of clear glass of the dispersion means.
  • the polyester of the plastic is for example chosen from polyvinyl butyral, ethylene/vinyl acetate copolymers and polyethylene terephthalates .
  • the LEDs are advantageously supplied with electric current by means of a conducting translucent layer deposited on the glass sheet of the emitting structure on which the LEDs lie .
  • zones have been isolated from the rest of the conducting layer by thin isolating bands.
  • These isolating bands may for example be produced by ablating a thin band of conducting layer by sweeping with a laser beam.
  • the conducting zones supplying the LEDs are connected to busbars.
  • these busbars are located on at least one edge of the mirror so as to be able to be concealed by a frame that covers the edges of the mirror and comprises the power supply cables for the busbars .
  • the figure shows a mirror comprising a transparent clear glass sheet (1) 3.15 mm in thickness and a conventional mirror composed of another glass sheet (2) 4 mm in thickness bearing, on one of its faces, a metallic silver film (3) (standard silvering) 70 to 120 nm in thickness.
  • the silver film (3) is protected from corrosion on its external face by two thin layers of suitable paint each about 50 ⁇ m in thickness, as in conventional mirrors.
  • LEDs (5) of the Nichia Warm White® brand and of the NFSL036 type are in contact with the glass sheet (2) and are inserted into the PVB layer (4) at a uniform distance of 55 mm in two dimensions in a peripheral zone (9) of a central reflecting zone (10) of the mirror.
  • the LEDs (5) are supplied via conducting bands
  • Said LEDs deliver a light flux extending over the visible spectrum and passing through the transparent clear glass sheet (1).
  • a zone (7) of the clear glass (1) is frosted by hydrofluoric acid over the perimeter of the mirror and covers the LEDs (5) .
  • the whole assembly comprising the mirror (2, 3), the LEDs (5), the PVB sheet (4) and the transparent glass sheet (1) is mechanically assembled by the forces of adhesion joining the glass sheets (1, 2) to the PVB sheet (4) .

Landscapes

  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Laminated Bodies (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)

Abstract

Light-radiation-emitting mirror composed of a glass sheet and LEDs generating light radiation, the LEDs being placed on the inside of a panel. The panel comprises an assembly (2,3,4) consisting of an emitting structure (2,4), containing one or more glass sheets (2) and the LEDs (5), with at least one reflecting structure (3) that reflects the light radiation, the emitting structure (2,4) being laminated with the reflecting structure (3). A peripherally frosted or sandblasted clear glass sheet (1) for dispersing the light is laminated with the assembly (2,3,4), on the external side opposite that of the reflecting structure (3).

Description

Illuminating mirror
The present invention relates to a glass illuminating mirror delivering light radiation generated on its perimeter by LEDs in which the density of the radiation is well distributed over an entire illuminating peripheral zone.
An illumination device comprising a transparent glass support panel coated with electrically conducting bands on which light-emitting diodes are mounted, emitting their light through the transparent support, is known (Patent US 6 270 236 Bl) .
However, this known device appears to be a panel formed from a multitude of very bright light spots in line with the light-emitting diodes separated by black or very dark zones. This results in an effect not very conducive to use of the panel in applications for illumination or for decoration.
The invention remedies this drawback by providing an illuminating mirror that is a glass panel comprising a multitude of LEDs generating light radiation, the radiation density of which is well distributed over the entire illuminating surface of the panel.
For this purpose, the invention relates to a mirror emitting light radiation, as defined in Claim 1.
The dependent claims define other possible embodiments of the invention, certain ones of which are preferred.
Apart from the great reduction, if not absence, of the abovementioned dazzling effect, the invention may also provide one or more of the following advantages : • the radiation density is better distributed over the illuminating area of the panel;
• the number of radiation-emitting components may be reduced; • the power supply system for the components is simplified; and
• a more attractive mirror is obtained.
The light-radiation-emitting mirror according to the invention is composed of at least one glass sheet. The term "glass sheet" is understood to mean any glass plate with a thickness possibly ranging between 1 and 50 mm. The thickness may vary at different points on the surface of the sheet. The surface may be flat or curved. However, flat sheets of glass having the same thickness at every point on the surface are preferred. It does not matter whether the glass consists of one or several types of known glass, such as soda-lime glass, borosilicate glass, crystalline and semicrystalline glass, or opal glass. The colour of the glass may be neutral (transparent or grey glass) or of greater or lesser saturation (bulk-tinted or surface-tinted with a shade that may range from red to violet) . The colour may be uniformly distributed over the entire surface of the sheet or, on the contrary, it may be localized in one or more particular zones of the surface of the panel. Sheets of glass that are uniformly neutral or uniformly coloured over the entire surface or the thickness of the sheet are preferred. The glass of the sheet may also be transparent or, on the contrary, be relatively filtering for light radiation lying below and above the frequencies of the visible spectrum.
The mirror according to the invention is also composed of a plurality of light-emitting diodes (LEDs) that generate light radiation. The term "light radiation" is understood to mean both radiation belonging to the visible spectrum and radiation outside this spectrum. Such radiation may be perfectly monochromatic or, on the contrary, it may be distributed over one or more contiguous or non- contiguous frequency bands. These components may be chosen from various LEDs having optoelectronic properties and from components capable of emitting radiation outside that populating the visible spectrum, but optionally with radiation falling within this spectrum. These are for example LED diodes emitting in the visible spectrum and UV and/or visible and/or IR diodes .
The light radiation generated by the LEDs has a wavelength lying between 200 nm and 1 mm. Preferably, the light radiation is radiation belonging to the visible spectrum. The light radiation may also advantageously include at least part of the visible spectrum and at least part of the infrared and/or ultraviolet spectrum.
According to the invention, the LEDs are placed inside the mirror, that is to say they are placed on a surface internal to the mirror that has no contact with its external environment.
The mirror comprises an assembly of at least one emitting structure with at least one reflecting structure. The term "emitting structure" is understood to mean any structure comprising the glass sheet (s) and the LEDs. The term "reflecting structure" denotes any structure capable of reflecting at least some of the radiation emitted by the emitting structure. The reflection of the emitted radiation may be total or partial, the remainder of the radiation being absorbed by and/or transmitted through the reflecting structure. Reflecting structures that have a light reflection factor ranging from 35.0 to 99.9% are generally preferred.
Examples of preferred emitting structures are flat glass sheets bearing the LEDs on their surface. The reflecting structure is a metal surface parallel to the emitting structures. The emitting and reflecting structures of the mirror according to the invention are in contact with one another.
According to the invention, the emitting structure is assembled by lamination with the reflecting structure.
In a first preferred embodiment of the mirror according to the invention, the LEDs comprise directional radiation generators. These components are oriented so that the direction of the radiation is perpendicular or close to perpendicular to the surface of the reflecting structure.
In another preferred embodiment of the mirror according to the invention which is compatible with the first embodiment, the reflecting structure is a mirror selected from those comprising a reflecting metal surface. The metal of the reflecting surface is advantageously a film of silver or a silver alloy. The metal film has a thickness that may generally range from 70 to 120 nm.
According to the invention, the laminated assembly that the mirror forms is provided with dispersion means for dispersing the light radiation peripherally. This dispersion means is a sheet of clear glass, the surface of which has been frosted or sandblasted in the peripheral zone, on the external side of the laminated assembly, the side opposite that of the reflecting structure relative to the emitting structure. The frosting may have been carried out for example by means of an aqueous hydrofluoric acid solution.
The term "peripheral zone" is understood to mean a relatively broad zone lying on the border of the mirror surrounding a central zone of the mirror that distinctly reflects the images of objects facing it and in line with which the clear glass is neither frosted nor sandblasted.
In another embodiment of the mirror according to the invention, which is preferred, a sheet of plastic chosen from polyesters is laminated between the glass sheet of the emitting structure, on which the LEDs lie, and the peripherally frosted sheet of clear glass of the dispersion means. The polyester of the plastic is for example chosen from polyvinyl butyral, ethylene/vinyl acetate copolymers and polyethylene terephthalates .
In the latter embodiment, the LEDs are advantageously supplied with electric current by means of a conducting translucent layer deposited on the glass sheet of the emitting structure on which the LEDs lie .
Preferably, zones have been isolated from the rest of the conducting layer by thin isolating bands. These isolating bands may for example be produced by ablating a thin band of conducting layer by sweeping with a laser beam.
The conducting zones supplying the LEDs are connected to busbars. Advantageously, these busbars are located on at least one edge of the mirror so as to be able to be concealed by a frame that covers the edges of the mirror and comprises the power supply cables for the busbars .
An illuminating mirror according to the invention will now be described in detail by means of an example illustrating the invention without however seeking to limit its scope.
Example: Illuminating mirror comprising LEDs
The figure shows a mirror comprising a transparent clear glass sheet (1) 3.15 mm in thickness and a conventional mirror composed of another glass sheet (2) 4 mm in thickness bearing, on one of its faces, a metallic silver film (3) (standard silvering) 70 to 120 nm in thickness. The silver film (3) is protected from corrosion on its external face by two thin layers of suitable paint each about 50 μm in thickness, as in conventional mirrors.
Sandwiched between the two glass sheets is a clear-tinted layer (4) of polyvinyl butyral (PVB) 0.76 mm in thickness. LEDs (5) of the Nichia Warm White® brand and of the NFSL036 type are in contact with the glass sheet (2) and are inserted into the PVB layer (4) at a uniform distance of 55 mm in two dimensions in a peripheral zone (9) of a central reflecting zone (10) of the mirror.
The LEDs (5) are supplied via conducting bands
(8) cut in the conducting layer (6) that covers the surface of the glass (2) . Said LEDs deliver a light flux extending over the visible spectrum and passing through the transparent clear glass sheet (1). A zone (7) of the clear glass (1) is frosted by hydrofluoric acid over the perimeter of the mirror and covers the LEDs (5) .
The whole assembly comprising the mirror (2, 3), the LEDs (5), the PVB sheet (4) and the transparent glass sheet (1) is mechanically assembled by the forces of adhesion joining the glass sheets (1, 2) to the PVB sheet (4) .

Claims

1. Mirror provided with a peripheral zone which is a light-radiation-emitting panel composed of at least one glass sheet and a plurality of light-emitting diodes or LEDs placed inside the panel within the peripheral zone, characterized in that the mirror comprises an assembly:
• of at least one emitting structure containing one or more glass sheets and the LEDs
• with a reflecting structure that reflects the light radiation, the emitting structure being mechanically fastened to the reflecting structure and assembled, by lamination, with the latter and with a peripheral dispersion means consisting of a clear glass sheet, the surface of which has been frosted or sandblasted in the peripheral zone, on the external side of the laminated assembly, the side opposite that of the reflecting structure relative to the emitting structure.
2. Mirror according to Claim 1, characterized in that the LEDs are supplied by means of a conducting translucent layer deposited on the glass sheet of the emitting structure on which the LEDs lie.
3. Mirror according to Claim 1 or 2, characterized in that zones have been isolated from the rest of the conducting layer by thin isolating bands.
4. Mirror according to Claim 3, characterized in that the reflecting structure is a metallic surface.
5. Mirror according to Claim 4, characterized in that the metal of the reflecting structure is silver or a silver alloy.
6. Mirror according to any one of Claims 1 to 5, characterized in that a sheet of plastic chosen from polyesters is laminated between the glass sheet of the emitting structure, on which the LEDs lie, and the peripherally frosted sheet of clear glass of the dispersion means.
7. Mirror according to Claim 6, characterized in that the plastic is chosen from polyesters.
8. Mirror according to Claim 7, characterized in that the polyester is chosen from polyvinyl butyral, ethylene/vinyl acetate copolymers and polyethylene terephthalates .
9. Mirror according to any one of Claims 1 to 8, characterized in that the light radiation is radiation in the visible spectrum.
10. Mirror according to any one of Claims 3 to 9, characterized in that the conducting zones supplying the LEDs are connected to busbars located on at least one edge of the mirror, so as to be able to be concealed by a frame that covers the edges of the mirror and comprises the power supply cables for the busbars .
PCT/EP2007/052268 2006-03-13 2007-03-12 Illuminating mirror WO2007104729A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06111060.7 2006-03-13
EP06111060A EP1834551B1 (en) 2006-03-13 2006-03-13 Illuminating mirror

Publications (1)

Publication Number Publication Date
WO2007104729A1 true WO2007104729A1 (en) 2007-09-20

Family

ID=36790937

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/052268 WO2007104729A1 (en) 2006-03-13 2007-03-12 Illuminating mirror

Country Status (5)

Country Link
EP (1) EP1834551B1 (en)
AT (1) ATE394974T1 (en)
DE (1) DE602006001200D1 (en)
TW (1) TW200741137A (en)
WO (1) WO2007104729A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009077946A1 (en) * 2007-12-17 2009-06-25 Philips Intellectual Property & Standards Gmbh Mirror for personal use with user position dependent illumination
US8093789B2 (en) * 2007-06-08 2012-01-10 Koninklijke Philips Electronics N.V. Light output device
US10687403B2 (en) 2016-03-21 2020-06-16 Koninklijke Philips N.V. Adaptive lighting system for a mirror component and a method of controlling an adaptive lighting system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2953703B1 (en) 2009-12-16 2012-02-03 Saint Gobain LIGHTING MIRROR
FR2964176B1 (en) 2010-09-01 2015-10-16 Saint Gobain DECORATIVE AND LIGHTING PANEL WITH ELECTROLUMINESCENT DIODES
FR2964446B1 (en) 2010-09-02 2012-08-24 Saint Gobain DECORATIVE AND LIGHTING PANEL WITH ELECTROLUMINESCENT DIODES
FR2964722B1 (en) 2010-09-15 2015-11-06 Saint Gobain MIRROR AND LIGHTING PANEL WITH ELECTROLUMINESCENT DIODES
CN107692702B (en) * 2017-10-19 2023-06-27 浙江朵纳家居股份有限公司 LED pattern mirror and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9016695U1 (en) * 1990-12-10 1992-01-16 Willuhn, Klaus, 4830 Guetersloh Illuminated disc
WO2004084683A1 (en) * 2003-03-25 2004-10-07 Glas Platz Gmbh & Co. Kg Mirror

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9016695U1 (en) * 1990-12-10 1992-01-16 Willuhn, Klaus, 4830 Guetersloh Illuminated disc
WO2004084683A1 (en) * 2003-03-25 2004-10-07 Glas Platz Gmbh & Co. Kg Mirror

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8093789B2 (en) * 2007-06-08 2012-01-10 Koninklijke Philips Electronics N.V. Light output device
WO2009077946A1 (en) * 2007-12-17 2009-06-25 Philips Intellectual Property & Standards Gmbh Mirror for personal use with user position dependent illumination
US8288964B2 (en) 2007-12-17 2012-10-16 Koninklijke Philips Electronics N.V. Mirror for personal use with user position dependent illumination
CN101902937B (en) * 2007-12-17 2012-12-05 皇家飞利浦电子股份有限公司 Mirror for personal use
US10687403B2 (en) 2016-03-21 2020-06-16 Koninklijke Philips N.V. Adaptive lighting system for a mirror component and a method of controlling an adaptive lighting system
RU2729045C2 (en) * 2016-03-21 2020-08-04 Конинклейке Филипс Н.В. Adaptive lighting system for mirror component and method for controlling adaptive lighting system

Also Published As

Publication number Publication date
ATE394974T1 (en) 2008-05-15
EP1834551B1 (en) 2008-05-14
EP1834551A1 (en) 2007-09-19
DE602006001200D1 (en) 2008-06-26
TW200741137A (en) 2007-11-01

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