EP1918793A1 - Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette - Google Patents

Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette Download PDF

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Publication number
EP1918793A1
EP1918793A1 EP06123449A EP06123449A EP1918793A1 EP 1918793 A1 EP1918793 A1 EP 1918793A1 EP 06123449 A EP06123449 A EP 06123449A EP 06123449 A EP06123449 A EP 06123449A EP 1918793 A1 EP1918793 A1 EP 1918793A1
Authority
EP
European Patent Office
Prior art keywords
ice
ultraviolet
blue light
diffusing
timepiece
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Withdrawn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
EP06123449A
Other languages
German (de)
English (en)
French (fr)
Inventor
François Klopfenstein
André Zanetta
Emmanuel Fleury
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP06123449A priority Critical patent/EP1918793A1/fr
Priority to TW096140602A priority patent/TWI459335B/zh
Priority to PCT/EP2007/061683 priority patent/WO2008052989A2/fr
Priority to US12/513,463 priority patent/US8169858B2/en
Priority to JP2009535675A priority patent/JP2010518355A/ja
Priority to EP07822037.3A priority patent/EP2084585B1/fr
Priority to KR1020097011356A priority patent/KR20090077016A/ko
Priority to CN200780040558A priority patent/CN101663625A/zh
Publication of EP1918793A1 publication Critical patent/EP1918793A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0023—Visual time or date indication means by light valves in general
    • G04G9/0029—Details
    • G04G9/0035—Details constructional
    • G04G9/0041—Illumination devices
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/02—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques
    • G04G9/04—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques by controlling light sources, e.g. electroluminescent diodes
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/30—Illumination of dials or hands
    • G04B19/32—Illumination of dials or hands by luminescent substances

Definitions

  • the present invention relates generally to a timepiece such as a wristwatch provided with a lighting device for illuminating an indicator element such as hands and / or indicia.
  • the invention relates more particularly to a lighting device comprising at least one ultraviolet or blue light-emitting diode for illuminating at least one zone integrating fluorescent pigments and / or phosphorescent of the indicator element to enhance the visibility of the latter in a dark environment.
  • An ultraviolet or blue light-emitting diode is understood to mean a diode whose light emission spectrum notably covers the wavelengths of ultraviolet or blue light, such a diode also being able to emit in the visible range.
  • the document WO 2004/034153 discloses a watch comprising a light emitting diode (LED) emitting light in the ultraviolet (UV) spectrum and disposed on the inner periphery of the watch case, between the dial and the watch crystal.
  • LED light emitting diode
  • This LED is fixed in a groove by a transparent resin that lets in ultraviolet rays.
  • a so-called “bright” material mixed with the transparent resin emits visible light.
  • the dial and the hands, also equipped with this "luminous” material are illuminated by LED with both ultraviolet and visible light, making the reading of the time easier in a dark environment.
  • This type of watch which associates an ultraviolet light source with a luminous material requires a supply of energy, for example in the form of electrical energy with a battery.
  • the energy transformed by the LED in ultraviolet light will be largely dispersed, some of the ultraviolet rays escaping through the ice of the watch towards the eyes of the user, which presents a risk for the latter.
  • the respective surface area of the dial hands and indexes is relatively small, only a limited amount of ultraviolet light will be converted into visible light by the "luminous" material, which in terms of efficiency and illumination is not satisfactory.
  • the document JP 2003-248445 describes a watch provided with a source of ultraviolet light associated with a waveguide present under the dial of the watch.
  • the latter is pierced with holes filled or not with a luminescent material that reacts with ultraviolet rays so as to emit visible light, but can also let the ultraviolet light pass through the dial.
  • Such a solution requires the use of a particular dial specifically dedicated to this application, superimposed on the waveguide, which has a disadvantage both in terms of the mounting method, which must be adapted, and in terms of the resulting thickness. of the timepiece which is then substantially larger.
  • the use of a waveguide makes it possible to reduce the losses a little by concentrating the ultraviolet light on the luminescent materials, the losses that are caused remain however important, the ultraviolet light which does not has not been transformed into visible light also partly escaping through the ice of the watch towards the user's eyes.
  • the lighting devices comprise an LED which does not allow an optimized reading of the time in a dark environment.
  • One of the main aims of the present invention is to overcome the aforementioned drawbacks by optimizing the visibility of the indicator elements in a dark environment while guaranteeing the simplicity, in terms of the dial, and the compactness, in terms of thickness, of the workpiece. watchmaking.
  • it is intended to produce a timepiece according to independent claim 1, ie a timepiece such as a wristwatch using ice as a waveguide associated with means making it possible to optimize the diffusing ultraviolet light into the interior of the timepiece while not requiring the use of a particular dial or additional waveguide.
  • FIGS. 1 to 3 in particular FIGS. 2 and 3, in which are represented the main elements of the timepiece necessary for understanding the embodiment. of the latter according to the invention.
  • the timepiece 1 described here is a wristwatch comprising a watch case 2, an ice 3 closing it and a lighting device 4a, 4b and 4c for illuminating display means.
  • the wristwatch 1 also includes other elements (not shown) necessary for its operation that we will not describe here, but which are well known to those skilled in the art.
  • the display means generally comprise a dial 5 and indicator elements 6 arranged opposite or on it, such as hands 7 and indicia 8. In the example shown, there are three needles 7 to indicate the hours respectively. , minutes and seconds, but it is of course possible to provide any predetermined number of needles 7 to cover the indicator functions of the wristwatch 1.
  • These needles 7, visible through the ice 3 of the wristwatch 1, comprise at least one zone 9 incorporating fluorescent and / or phosphorescent pigments.
  • the dial 5 is provided with indices 8 indicating the hours, minutes and seconds, for example in the form of numbers, letters or any other predetermined sign; a predetermined number of indices 8 may also include a zone 9 incorporating fluorescent pigments and / or phosphorescent.
  • the wristwatch 1 comprises at least one ultraviolet light-emitting diode 4a, or ultraviolet LED, arranged preferably on the edge of the glass 3 then serving as waveguide, as will be detailed further in connection with Figures 2 and 3.
  • the ultraviolet LED could be arranged on a circuit printed under the dial, the light then being conducted by means of an additional waveguide into the edge of the ice serving as a waveguide.
  • the ultraviolet LED could be disposed peripherally under the edge of the ice, the latter then being hemispherical, or at least having a very convex curvature.
  • the light-emitting diode makes it possible to illuminate, with ultraviolet light, or UV light, the zones 9 integrating the fluorescent and / or phosphorescent pigments of the needles 7 and indices 8.
  • a manual or automatic control member 10 is provided for activate the ultraviolet LED 4a.
  • the fluorescent and / or phosphorescent zones 9 of the needles 7 and indices 8 are preferably formed by a translucent resin mixed with fluorescent and / or phosphorescent pigments, the latter reacting with the UV light so as to emit visible light.
  • the needles 7 and the indicia 8 may for example be covered with this fluorescent and / or phosphorescent resin, have recessed regions filled by the latter or be partially formed, in cooperation with a metallic or synthetic support material, or be also made entirely of the resin.
  • This lighting device has the advantage of using an ultraviolet light source, that is to say in the field of the invisible, which gives a certain aesthetic effect, when illuminating the needles or other indicators.
  • the aim of obtaining an aesthetic effect it may be provided to partially cover the ice, preferably on its underside, with a 16-nanometric layer of fluorescent and / or phosphorescent pigments making it possible to remain invisible in the light of day, because of its very small thickness, and to appear in the form for example of a logo or a hidden image or hints of hours when lighting with ultraviolet light.
  • FIG. 2 is a view according to section AB of Figure 1, showing various embodiments of the present invention.
  • the ice 3 of the wristwatch 1 forms a waveguide which is able to diffuse the UV light downwards relatively homogeneously and uniformly.
  • the ultraviolet LED 4 is disposed in a housing 11 provided in the watch case 2 facing the edge of the ice 3 to emit the UV light substantially in the plane of the waveguide.
  • it is provided, as is shown on 1, three ultraviolet LEDs 4a, 4b, 4c arranged regularly on the periphery of the ice, ie spaced at a substantially equal angle of 120 ° C, to obtain even more uniform and uniform illumination.
  • a diffusing layer 12 on the inner surface of the ice 3, which has the advantage of being able to use a conventional ice cream while optimizing the diffusion of the UV light from the ice to the ice. inside the watch.
  • materials that can be used for such a diffusing layer are metal oxides, such as, for example, zinc oxide or titanium dioxide.
  • This diffusing layer 12 is made invisible because of its submicron or nanometric thickness.
  • the diffusion property is obtained either by controlling the density of this layer or by producing a semi-reflective frame consisting of producing a submicron gradient of points with a variable density.
  • the fluorescent and / or phosphorescent partial layer 16 mentioned in the context of FIG. 1 is deposited preferably between the inner face of the ice and the diffusing layer 12.
  • a second variant of the diffusion means consists in providing a reflective or diffusing / reflective layer 13 deposited on the upper face of the ice.
  • a reflective layer is obtained by depositing a continuous and uniform layer, it is made invisible by its submicron or nanometric thickness.
  • a diffusing / reflecting layer is obtained by depositing a discontinuous layer, for example in the form of a frame.
  • this variant providing a layer 13 deposited on the outer face of the ice, it is advantageously provided to deposit an additional protective layer 14 over this reflective layer.
  • This protective layer 14 is preferably made of a sol-gel type material ensuring on the one hand the necessary transparent effect and on the other hand the protective effect by its hardness.
  • This second variant has the advantage of having to apply additional layers on the outside of the ice, thus making it possible to obtain the desired effect without making the ice-making process more complicated.
  • the intended diffusion means consist in using a convex-shaped ice cream 3 optimized for directing the ultraviolet rays flowing therethrough towards the inside of the watch and more particularly on the fluorescent and / or phosphorescent zones.
  • the diffusion means provided consist in providing reflecting zones 15 disposed on the edge of the ice 3 so as to retain all the ultraviolet light circulating in the waveguide ice, thus avoiding any absorption on the edges. ice. It is understood that these reflective areas do not cover the edge of the ice at the light emitting diodes 4a, 4b, 4c disposed at its periphery.
  • This fourth variant also has the advantage of simplicity in the method of mounting the internal components of the watch.
  • the aim of reinforcing the lighting of the fluorescent and / or phosphorescent zones 9 it may be provided to provide inside the wristwatch with others of its components of layers or reflectors reflecting the UV light, for example the flange 17 or a layer 18 reflecting the UV light at least partially covering the upper face of the dial 5.
  • Figure 3 is also a view according to section AB of Figure 1.
  • Figure 3 shows two other embodiments of the present invention means for diffusing ultraviolet light from the ice into the interior of the shows. These variants, although presented for reasons of clarity separately from the first four variants presented with reference to FIG. 2, can quite well be combined together.
  • the diffusion means consist in injecting a nanopowder 19 into the waveguide ice.
  • This nano-powder consists of submicron or nanometric grains of metal oxide for the diffusion of ultraviolet light.
  • a greater grain density is expected in the areas remote from the light-emitting diodes and less important in the zones near the diodes.
  • the diffusion means consist of microstructures and / or nanostructures 20 formed in the ice, preferably on the lower face of the latter.
  • These microstructures 20 are capable of driving the UV rays downwards from the ice towards the inside of the watch.
  • These microstructures 20 may according to their geometric disposition and their shape direct the UV rays towards the fluorescent and / or phosphorescent zones 9 concerned.
  • these microstructures and / or nanostructures are arranged in annular form so as not to hinder the visibility of the indicator elements of the watch. Note that their positioning on the underside of the ice prevents clogging, which would adversely affect the optical efficiency of the ice and the aesthetic appearance of the watch.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Electric Clocks (AREA)
  • Details Of Measuring Devices (AREA)
EP06123449A 2006-11-03 2006-11-03 Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette Withdrawn EP1918793A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP06123449A EP1918793A1 (fr) 2006-11-03 2006-11-03 Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette
TW096140602A TWI459335B (zh) 2006-11-03 2007-10-29 裝配有包含紫外線發光二極體之照明裝置的時計
PCT/EP2007/061683 WO2008052989A2 (fr) 2006-11-03 2007-10-30 Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette
US12/513,463 US8169858B2 (en) 2006-11-03 2007-10-30 Timepiece fitted with a lighting device comprising an ultraviolet light-emitting diode
JP2009535675A JP2010518355A (ja) 2006-11-03 2007-10-30 紫外発光ダイオードを備えた照明デバイスを具備した時計
EP07822037.3A EP2084585B1 (fr) 2006-11-03 2007-10-30 Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette
KR1020097011356A KR20090077016A (ko) 2006-11-03 2007-10-30 자외선 발광 다이오드를 포함하는 발광 장치를 구비한 시계
CN200780040558A CN101663625A (zh) 2006-11-03 2007-10-30 带有包括紫外发光二极管的照明装置的钟表件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06123449A EP1918793A1 (fr) 2006-11-03 2006-11-03 Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette

Publications (1)

Publication Number Publication Date
EP1918793A1 true EP1918793A1 (fr) 2008-05-07

Family

ID=38229096

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06123449A Withdrawn EP1918793A1 (fr) 2006-11-03 2006-11-03 Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette
EP07822037.3A Active EP2084585B1 (fr) 2006-11-03 2007-10-30 Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP07822037.3A Active EP2084585B1 (fr) 2006-11-03 2007-10-30 Pièce d'horlogerie munie d'un dispositif d'éclairage comprenant une diode électroluminescente ultraviolette

Country Status (7)

Country Link
US (1) US8169858B2 (ja)
EP (2) EP1918793A1 (ja)
JP (1) JP2010518355A (ja)
KR (1) KR20090077016A (ja)
CN (1) CN101663625A (ja)
TW (1) TWI459335B (ja)
WO (1) WO2008052989A2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
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FR2975196A1 (fr) * 2011-05-11 2012-11-16 Catherine Chebiri Montre-bijoux avec lumiere incorporee
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities

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JP2013501210A (ja) * 2009-06-18 2013-01-10 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス 特殊な美的効果を有する時計
AT511011A1 (de) * 2010-12-20 2012-08-15 Mb Microtec Ag Anzeigevorrichtung mit einem transparenten körper
EP2549341A1 (fr) * 2011-07-20 2013-01-23 The Swatch Group Research and Development Ltd. Procédé pour implanter un décor dans un élément d'habillage horloger déposé par galvanoplastie et élément d'habillage réalisé selon ce procédé
DE102012016771A1 (de) * 2012-08-24 2014-02-27 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Instrument mit Ziffernblatt für ein Kraftfahrzeug und Verfahren zur Herstellung desselben
US20140097356A1 (en) * 2012-10-04 2014-04-10 Electronics And Telecommunications Research Institute Display device
EP2717103B1 (fr) * 2012-10-04 2017-01-11 The Swatch Group Research and Development Ltd. Spiral lumineux
KR20150042960A (ko) * 2013-10-14 2015-04-22 서울바이오시스 주식회사 위폐 감별 기능을 구비하는 손목 시계
US9377761B2 (en) 2014-03-06 2016-06-28 Timex Group Usa, Inc. Illumination arrangement for a timepiece
JP2016164830A (ja) * 2015-03-06 2016-09-08 セイコーエプソン株式会社 照明装置、表示装置および携帯用電子機器
EP3070539A1 (fr) * 2015-03-17 2016-09-21 Omega SA Montre-bracelet comprenant un cadran muni d'index lumineux
EP3226084B1 (fr) * 2016-03-29 2021-01-13 The Swatch Group Research and Development Ltd. Composant horloger coloré
EP3306419B1 (fr) * 2016-10-05 2019-11-27 The Swatch Group Research and Development Ltd Joint horloger
DE102017201676B4 (de) 2017-02-02 2019-08-14 Realization Desal Ag Uhrglas mit lumineszierendem Element
JP2019029164A (ja) * 2017-07-28 2019-02-21 セイコーエプソン株式会社 ウェアラブル機器
EP3572886B1 (fr) * 2018-05-23 2021-07-14 The Swatch Group Research and Development Ltd Montre comprenant un élément muni d'un index éclairable
EP3620865B1 (fr) * 2018-09-05 2021-02-24 The Swatch Group Research and Development Ltd Piece d'horlogerie mecanique ou electromecanique a entrainement mysterieux
EP3637200B1 (fr) * 2018-10-09 2022-09-14 The Swatch Group Research and Development Ltd Dispositif d'affichage lumineux
EP3671365A1 (fr) * 2018-12-19 2020-06-24 The Swatch Group Research and Development Ltd Cadran de piece d'horlogerie
DE102019103417B3 (de) * 2019-02-12 2020-02-20 Stefan Schlor Uhr
EP3796105A1 (fr) * 2019-09-23 2021-03-24 The Swatch Group Research and Development Ltd Élément d'horlogerie
EP3845974B1 (fr) * 2019-12-31 2024-02-21 The Swatch Group Research and Development Ltd Indicateur mobile pour un dispositif d'affichage analogique
EP4102308A1 (fr) * 2021-06-08 2022-12-14 The Swatch Group Research and Development Ltd Procédé de fabrication d'un composant horloger luminescent
USD1017442S1 (en) * 2021-11-03 2024-03-12 Officine Panerai Ag Watch dial
USD997010S1 (en) * 2022-03-09 2023-08-29 Richemont International Sa Watch dial

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JP2000105284A (ja) * 1998-09-29 2000-04-11 Asahi Glass Co Ltd 照明具つき時計
JP2003248445A (ja) * 2002-02-25 2003-09-05 Casio Comput Co Ltd 光透過型金属部材、これを用いた発光装置、および電子機器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2975196A1 (fr) * 2011-05-11 2012-11-16 Catherine Chebiri Montre-bijoux avec lumiere incorporee
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities

Also Published As

Publication number Publication date
WO2008052989A2 (fr) 2008-05-08
TWI459335B (zh) 2014-11-01
US8169858B2 (en) 2012-05-01
US20100202255A1 (en) 2010-08-12
JP2010518355A (ja) 2010-05-27
KR20090077016A (ko) 2009-07-13
WO2008052989A3 (fr) 2008-09-12
EP2084585A2 (fr) 2009-08-05
CN101663625A (zh) 2010-03-03
EP2084585B1 (fr) 2018-05-02
TW200839670A (en) 2008-10-01

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