EP0990196B1 - Horloge a dispositif de projection - Google Patents

Horloge a dispositif de projection Download PDF

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Publication number
EP0990196B1
EP0990196B1 EP97929214A EP97929214A EP0990196B1 EP 0990196 B1 EP0990196 B1 EP 0990196B1 EP 97929214 A EP97929214 A EP 97929214A EP 97929214 A EP97929214 A EP 97929214A EP 0990196 B1 EP0990196 B1 EP 0990196B1
Authority
EP
European Patent Office
Prior art keywords
clock
projection
projection device
lens
display
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
EP97929214A
Other languages
German (de)
English (en)
Other versions
EP0990196A1 (fr
Inventor
Raymond Apartment E10 CHAN
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.)
IDT LCD Holdings BVI Ltd
Original Assignee
IDT LCD Holdings BVI Ltd
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 IDT LCD Holdings BVI Ltd filed Critical IDT LCD Holdings BVI Ltd
Priority to DE29724450U priority Critical patent/DE29724450U1/de
Publication of EP0990196A1 publication Critical patent/EP0990196A1/fr
Application granted granted Critical
Publication of EP0990196B1 publication Critical patent/EP0990196B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G04B19/34—Position of the hands projected optically

Definitions

  • the invention relates to a clock with an apparatus for projection of a liquid crystal display to a smooth surface according to the preamble of claim 1.
  • a clock with an apparatus for projection of a display to a ceiling or a wall as defined in the preamble of claim 1 is already known from the EP-A 0 036 946 KNOX.
  • the projection device of this known apparatus comprises sequentially a light source, a focussing lens, a liquid crystal display and a projection lens. Furthermore, the projection device is pivotably attached at the casing of the clock.
  • a further clock with an apparatus for projection of a display is known from the FR 2 633 070 RIGAL.
  • a light source, a partially translucent clockface and a system of lenses are sequentially arranged within the projection device.
  • Another projection clock is known from the FR 1 605 562 BATRIAUD.
  • the projection of the clockface or numerals is based on the transmitted light principle or on reflected light.
  • the apparatus contains a lens or a system of lenses.
  • the invention seeks to offer remedy.
  • the purpose of the invention is to project the display of a clock comprising a projection device to any smooth surface. Therefore, the projection clock provides a moveable projection device.
  • the projection clock may provide a time display based on a clock synchronized by a DCF-77 signal - a so called radio clock - and may provide an alarm.
  • the projection device is focusable and permits a focusing of the projected image to walls having a different distance or to ceilings having a diverse height.
  • different set-up heights of the projection clock may be compensated by adjusting the lens.
  • the use of a super bright light-emitting diode with collimator-cage as projection light source also causes a significant increase of the lastingness of the projection light source compared to the former applied incandescent bulbs with halogen filling.
  • the invention solves the posed task by using a clock which embodies the features of claim 1.
  • An other advantageous preferable embodiment of the invention is the translatability of the projecting lens in an axial direction by means of a knurled turning knob.
  • the projecting lens is easily focusable and permits a focusing of the projected image at walls or ceilings.
  • a clock according to a preferable embodiment of the invention permits the projection of a clock coupled with a radio clock at a wall or a ceiling.
  • Fig. 1 illustrates the projection clock comprising a clock 1 and a projection device 2.
  • the projection device 2 is based on the transmitted light principle and comprises a light source 4, a miniature liquid crystal display 5 which is to be projected and a spherical lens 3.
  • the light source 4, the miniature liquid crystal display 5 and the spherical lens 3 are sequentially arranged along the light beam permitting a projection of the miniature liquid crystal display 5 into a real image.
  • the projection device 2 is moveable mounted and provided with a knurled turning knob 8 permitting a focussing of the spherical lens 3.
  • the clock 1 and the projection device are provided with two batteries 12, but optionally an AC-power unit 13 with a 3 V DC low tension side may be connected.
  • Fig. 2 shows a front view which illustrates the clock 1 with the projection device 2 which is moveable relative to the casing 9 of the clock 1 around the axis of rotation 17 which connects the casing 9 and the clock 1.
  • the knurled turning knob 8 at the projection device 2 serves to translate the lens 3 in an axial direction and therewith focus the spherical lens 3.
  • the display 11 of the clock 1 selectively provides a 24 h or a 12 h time display which may be chosen by a press switch 14. Apart from this a display 15 of the week-day and a display 16 of the date is integrated in the display 11 of the clock 9.
  • an alarm function preferably providing an acoustical signal can be controlled by the press switch 14 which is integrated in the clock 1.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Claims (11)

  1. Horloge (1) dotée d'un dispositif de projection pour un affichage à cristaux liquides (5) sur une surface lisse, où l'horloge (1) comprend un boítier (9) possédant un afficheur (11) et un dispositif de projection (2), ledit dispositif de projection (2) pouvant être déplacé en étant connecté au boítier (9) de l'horloge (1) et comprenant une source de lumière (4), un affichage à cristaux liquides (5) et une lentille (3), dans laquelle le dispositif de projection (2) est basé sur le principe de transmission de la lumière, où la source de lumière (4), l'affichage à cristaux liquides (5) qui doit être projeté et la lentille (3) sont disposés successivement le long du faisceau lumineux permettant la projection d'une image réelle,
    caractérisée en ce que :
    A) l'afficheur (11) de l'horloge (1) présente sélectivement une lecture de 24 heures ou une lecture de 12 heures ; et
    B) une diode électroluminescente est utilisée comme dite source de lumière (4).
  2. Horloge (1) selon la revendication 1, caractérisée en ce que la lentille (3) peut être translatée dans la direction axiale, de préférence au moyen d'un bouton de réglage à molette (8), de façon à focaliser l'image projetée.
  3. Horloge (1) selon la revendication 1 ou 2, caractérisée en ce qu'elle est configurée comme une horloge commandée à distance par radio.
  4. Horloge (1) selon la revendication 3, caractérisée en ce que l'horloge (1) est synchronisée sur la base d'un signal DCF-77.
  5. Horloge (1) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que l'horloge (1) est pourvue de deux batteries (12), de préférence, de la dimension UM3 ou "AA".
  6. Horloge (1) selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'horloge (1) fournit un signal d'alarme (10), de préférence un signal sonore.
  7. Horloge (1) selon l'une des revendications 1 à 6, caractérisée en ce que la lentille (3) est réglable de façon à pouvoir focaliser l'image projetée.
  8. Horloge (1) selon l'une des revendications 1 à 7, caractérisée en ce que la lentille (3) est sphérique.
  9. Horloge (1) selon l'une des revendications 1 à 8, caractérisée en ce qu'un bloc d'alimentation électrique en courant alternatif (13) peut être connecté à l'horloge (1) et au dispositif de projection (2).
  10. Horloge (1) selon l'une des revendications 1 à 9, caractérisée en ce que ledit bloc d'alimentation électrique en courant alternatif (13) est pourvue d'un côté de basse tension continue de 3 V.
  11. Horloge selon l'une des revendications 1 à 10, caractérisée en ce que le dispositif de projection (2) peut être tourné par rapport au boítier (9) de l'horloge (1) en le faisant tourner autour de l'axe de rotation (17) qui raccorde l'horloge (1) et le dispositif de projection (2).
EP97929214A 1997-06-18 1997-06-18 Horloge a dispositif de projection Expired - Lifetime EP0990196B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29724450U DE29724450U1 (de) 1997-06-18 1997-06-18 Projektionsuhr

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1997/003182 WO1998058298A1 (fr) 1997-06-18 1997-06-18 Horloge a dispositif de projection

Publications (2)

Publication Number Publication Date
EP0990196A1 EP0990196A1 (fr) 2000-04-05
EP0990196B1 true EP0990196B1 (fr) 2005-12-07

Family

ID=8166659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97929214A Expired - Lifetime EP0990196B1 (fr) 1997-06-18 1997-06-18 Horloge a dispositif de projection

Country Status (4)

Country Link
EP (1) EP0990196B1 (fr)
JP (1) JP2002505746A (fr)
DE (1) DE69734836T2 (fr)
WO (1) WO1998058298A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2415130A1 (fr) * 2002-12-24 2004-06-24 Labatt Brewing Company Limited Distributeur automatique de boissons a projection lumineuse
US7149152B1 (en) * 2005-07-28 2006-12-12 Idt Technology Limited Projection clock
CN1952768A (zh) * 2005-10-19 2007-04-25 宏碁股份有限公司 投影显示装置的时间控制系统及其方法
DE102011118749A1 (de) * 2011-11-08 2013-05-29 Alexander Degtjarew Projektionsuhr
DE102011118748A1 (de) * 2011-11-08 2013-05-29 Alexander Degtjarew Projektionsuhr mit zwei Spiegel
CN103412475A (zh) * 2013-07-18 2013-11-27 吴江市同心电子科技有限公司 一种感应式投影钟
CN113296345B (zh) * 2021-05-18 2022-05-31 福建易美特电子科技有限公司 具有旋转、变焦功能的时钟字符投影设备
CN119376224A (zh) * 2024-12-31 2025-01-28 福建宜美智能科技有限公司 一种可手动调焦并成像的电子投影钟及其使用方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0180155A2 (fr) * 1984-10-30 1986-05-07 Junghans Uhren Gmbh Montre commandée par radio
EP0382130A2 (fr) * 1989-02-10 1990-08-16 Junghans Uhren Gmbh Petite horloge radio-pilotée avec bobine-antenne
US5105396A (en) * 1990-05-04 1992-04-14 Junghans Uhren Gmbh Autonomous radio timepiece

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB440444A (en) * 1934-08-04 1935-12-31 Ernest Victor Raynor Improvements in, and relating to, clocks, watches and like timepieces
US2290811A (en) 1942-02-03 1942-07-21 Harry B Nassoit Projector for time indications
DE840970C (de) 1949-12-03 1952-06-09 Otto Dipl-Ing Schmidt Uhrzifferblatt-Projektionsgeraet
US2694338A (en) 1953-03-06 1954-11-16 Moultry Clock face projecting device
FR1605562A (en) * 1968-04-05 1981-04-03 Alarm clock with illuminated dial - projects image of face on to wall or ceiling of bedroom
JPS56669A (en) 1979-06-15 1981-01-07 Matsushita Electric Works Ltd Display unit of digital clock
DE8007976U1 (de) * 1980-03-22 1980-06-19 Esge Elektrouhren Gmbh, 7442 Neuffen Elektrische Digitaluhr
FR2633070A1 (fr) * 1988-06-21 1989-12-22 Rigal Isabelle Horloge permettant la projection optique de l'heure et ensemble de projection incluant une telle horloge
JPH03175397A (ja) 1989-12-04 1991-07-30 Tomoe Koukokushiya:Kk 影時計
DE4112043A1 (de) * 1991-04-12 1992-10-15 Ingo Maurer Uhr mit analoganzeige
US5260919A (en) * 1992-05-08 1993-11-09 Tsai Ching Shyn Electric timer with a projector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0180155A2 (fr) * 1984-10-30 1986-05-07 Junghans Uhren Gmbh Montre commandée par radio
EP0382130A2 (fr) * 1989-02-10 1990-08-16 Junghans Uhren Gmbh Petite horloge radio-pilotée avec bobine-antenne
US5105396A (en) * 1990-05-04 1992-04-14 Junghans Uhren Gmbh Autonomous radio timepiece
US5105396B1 (en) * 1990-05-04 1993-11-30 Autonomous radio timepiece

Also Published As

Publication number Publication date
HK1024063A1 (en) 2000-09-29
DE69734836T2 (de) 2006-09-07
EP0990196A1 (fr) 2000-04-05
WO1998058298A1 (fr) 1998-12-23
DE69734836D1 (de) 2006-01-12
JP2002505746A (ja) 2002-02-19

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