DE3836173A1 - Indirectly luminous display surface - Google Patents

Indirectly luminous display surface

Info

Publication number
DE3836173A1
DE3836173A1 DE19883836173 DE3836173A DE3836173A1 DE 3836173 A1 DE3836173 A1 DE 3836173A1 DE 19883836173 DE19883836173 DE 19883836173 DE 3836173 A DE3836173 A DE 3836173A DE 3836173 A1 DE3836173 A1 DE 3836173A1
Authority
DE
Germany
Prior art keywords
light
display area
display surface
display
wavelength
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Withdrawn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
DE19883836173
Other languages
German (de)
Inventor
Hans Joachim Dipl Ing Moeller
Norbert Markus
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.)
Telenorma GmbH
Original Assignee
Telenorma Telefonbau und Normalzeit GmbH
Telefonbau und Normalzeit GmbH
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 Telenorma Telefonbau und Normalzeit GmbH, Telefonbau und Normalzeit GmbH filed Critical Telenorma Telefonbau und Normalzeit GmbH
Priority to DE19883836173 priority Critical patent/DE3836173A1/en
Publication of DE3836173A1 publication Critical patent/DE3836173A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1804—Achieving homogeneous illumination
    • G09F2013/1831—Achieving homogeneous illumination using more than one light source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1872—Casing
    • G09F2013/1881—Frame-like

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

A display surface is to be made in such a manner that it is clearly visible in the case of various possible applications without additionally illuminating a room which, for operational reasons, has to be blacked out (dimmed, darkened). Light-emitting diodes are fitted to the edges of a display surface, which consists of a transparent plastic with embedded fluorescent material, in such a manner that they can uniformly inject their light into the sections of the display surfaces. The wavelength of this light is matched to the wavelength of the fluorescent dyes embedded in the plastic. For contrast formation, partial surfaces are coated with a reflecting layer and/or provided with a contrasting print. In the case of the display surface according to the invention the entire arrangement is designed in such a manner that a clearly visible display is produced, it being possible to achieve good contrasting effects. The display surface is suited to use in darkened rooms since it emits an extremely small amount of light to the environment.

Description

Die Erfindung betrifft eine indirekt leuchtende Anzeigefläche nach dem Oberbegriff des Patentanspruches 1.The invention relates to an indirectly illuminated display surface the preamble of claim 1.

Aus der DE-OS 33 21 738 ist es bekannt, fluoreszierende Verbindungen in transparente Materialien einzuarbeiten. Diese Materialien werden für optische Anzeigeelemente verwendet, wobei natürliches oder künst­ liches Licht zur Anregung der fluoreszierenden Verbindungen dient. Um besondere Effekte zu erzielen, ist eine Kombination von fluoris­ zierenden Material und nicht fluoreszierendem Material vorgesehen, wo­ bei das transparente nicht-fluoreszierende Material ganz oder teil­ weise oberflächlich so strukturiert ist, daß es an den strukturier­ ten Stellen zur Auslenkung des Fluoreszenzlichtes kommt. Dabei wird je nach Intensität der verwendeten Lichtquellen Licht an den Raum abgebeben, wo sich die Anzeigeelemente befinden.From DE-OS 33 21 738 it is known fluorescent compounds to incorporate into transparent materials. These materials will be used for optical display elements, natural or artificial Lich light serves to excite the fluorescent compounds. To achieve special effects, is a combination of fluoris decorative material and non-fluorescent material provided where with the transparent non-fluorescent material in whole or in part is superficially structured in such a way that th places for the deflection of the fluorescent light. Doing so depending on the intensity of the light sources used light to the room give up where the display elements are.

Die Aufgabe der Erfindung besteht darin, eine Anzeigefläche vorzu­ stellen, welche deutlich sichtbar ist, aber nur wenig Licht an ihre Umgebung abgibt, so daß Räumlichkeiten, bei denen aus betrieblichen Gründen kein helles Licht vorhanden sein darf, nicht zusätzlich durch eine Anzeigefläche beleuchtet werden.The object of the invention is to provide a display area place that is clearly visible, but only little light to your Gives out surroundings, so that premises from which operational Bright light may not be present, not additionally by a display area is illuminated.

Für die Lösung dieser Aufgabe sind Merkmale vorgesehen, wie sie im Patentanspruch 1 angegeben sind.Features are provided for solving this task, as in Claim 1 are specified.

Damit wird in vorteilhafter Weise erreicht, daß eine deutlich sicht­ bare Anzeigefläche entsteht, welche nur in sich leuchtet, aber keine nennenswerte Lichtstrahlung nach außen abgibt. Die Oberfläche der Anzeigefläche kann dabei so gestaltet werden, daß sich Kontraste und/oder Schattierungen ergeben.This advantageously ensures that a clear view clear display area is created, which only lights up in itself, but none emits significant light radiation to the outside. The surface of the Display area can be designed so that there are contrasts  and / or shades result.

In den Untersuchungen sind weitere vorteilhafte Ausgestaltungen und Anwendungsmöglichkeiten angegeben.In the investigations there are further advantageous configurations and Applications indicated.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand von Zeich­ nungen näher erläutert. Es zeigtAn embodiment of the invention is described below with reference to drawing nations explained in more detail. It shows

Fig. 1 die Draufsicht auf eine als Uhr ausgestaltete Anzeige­ fläche, Fig. 1 is a plan view of a surface configured as a clock display

Fig. 2 der Querschnitt durch eine Anzeigefläche. Fig. 2 shows the cross section through a display area.

Bei der in Fig. 1 dargestellten Anzeigefläche AF handelt es sich um das Zifferblatt einer Uhr, wobei die Minutenskala M auf einer Teilfläche TF untergebracht ist. Diese Teilfläche kann mit einer Reflexschicht belegt sein, so daß sich ein Kontrast zu der übrigen Anzeigefläche AF ergibt. Diese Reflexschicht kann entweder außen auf die Anzeigefläche AF auf­ gebracht sein, oder auch auf der Rückseite angebracht werden. Dadurch ergeben sich insbesondere an den Rändern deutlich wahrnehmbare Kontra­ ste. Die Zeiger und die Minutenskala sind so ausgestaltet, daß sie nicht leuchten, damit die Uhrzeit genau abgelesen werden kann.The display area AF shown in FIG. 1 is the dial of a clock, the minute scale M being accommodated on a partial area TF . This partial area can be covered with a reflective layer, so that there is a contrast to the remaining display area AF . This reflective layer can either be placed on the outside of the display surface AF , or it can also be attached to the back. This results in clearly perceivable contrasts, especially at the edges. The hands and minute scale are designed so that they do not light up so that the time can be read exactly.

Die gesamte Anzeigefläche AF ist von einem Rahmen R umgeben, welcher Teil eines Gehäuses sein kann. Unter diesem Rahmen befinden sich Balken von Leuchtdioden LED, welche so angeordnet sind, daß sie ihr Licht seitlich in die aus einer Kunststoffplatte mit fluoreszierenden Bestandteilen bestehenden Anzeigefläche AF abgeben. Die gesamte Anzeigefläche wird dann zum Leuchten angeregt, ohne daß eine nennenswerte Lichtabstrahlung stattfindet. Die Wellenlänge des abgestrahlten Lichtes der Leuchtdioden LED und die Wellenlänge des in die als Anzeigefläche AF dienenden Kunststoffplatte eingebrachten fluoreszierenden Materials sind so aufeinander abgestimmt, daß eine gut erkennbare Anzeige gegeben ist.The entire display area AF is surrounded by a frame R , which can be part of a housing. Beneath this frame are bars of light-emitting diodes LED , which are arranged in such a way that they emit their light laterally into the display area AF , which consists of a plastic plate with fluorescent components. The entire display area is then stimulated to glow without significant light radiation taking place. The wavelength of the emitted light from the light-emitting diodes LED and the wavelength of the fluorescent material introduced into the plastic plate serving as the display area AF are matched to one another in such a way that a clearly recognizable display is given.

Das Prinzip der gezeigten Anordnung ist nicht auf die Ausgestaltung als Zifferblatt einer Uhr beschränkt. Es ist ebenso möglich Piktogramme, Worte oder Texte aufzudrucken oder durch unterschiedliche Teilflächen so zu gestalten, daß ein ausreichender Kontrast gegeben ist. Durch die Anwendung von Teilflächen TF, welche fluoreszierende Farbstoffe mit anderen Wellenlängen haben, können verschiedene Farben oder verschie­ dene Leuchtstärken erreicht werden. Andere Effekte lassen sich dadurch erreichen, daß auch Leuchtdioden mit einer anderen Licht­ wellenlänge vorgesehen werden, welche alternativ einschaltbar sind.The principle of the arrangement shown is not limited to the design of a clock face. It is also possible to print pictograms, words or texts or to design them with different sub-areas so that there is sufficient contrast. By using partial areas TF , which have fluorescent dyes with different wavelengths, different colors or different luminosities can be achieved. Other effects can be achieved by providing light-emitting diodes with a different light wavelength, which can alternatively be switched on.

Durch Anbringen von reflektierenden Materialien auf der Rückseite oder durch Anbringen einer Gravur an geeigneten Stellen lassen sich für den Betrachter optimale Anzeigeeigenschaften erreichen. Es lassen sich auf diese Weise ohne weiteres auch Anzeigemittel zum Zweck der Warnung herstellen. Ohne daß die grundsätzliche Anordnung verändert werden muß, bietet sich eine Vielzahl von Anwendungsmög­ lichkeiten.By attaching reflective materials on the back or by placing an engraving in suitable places achieve optimal display properties for the viewer. It display means can also be used in this way without further notice Establish the purpose of the warning. Without the basic arrangement needs to be changed, there are a variety of possible applications options.

Claims (5)

1. Indirekt leuchtende Anzeigefläche, wobei in durchsichtigem Kunst­ stoff eingebettetes fluoreszierendes Material durch Lichteinwir­ kung zum Strahlen angeregt wird, dadurch gekennzeichnet, daß an den Rändern der Anzeigefläche (AF) Leuchtdioden (LED) so angebracht sind, daß sie ihr Licht in die Schnittflächen der An­ zeigefläche (AF) gleichmäßig einbringen können, wobei die Wellen­ länge dieses Lichtes auf die Wellenlänge der in den Kunststoff eingebetteten fluoreszierenden Farbstoffe abgestimmt ist, und daß zur Kontrastbildung Teilflächen (TF) mit einer Reflexschicht über­ zogen sind und/oder einen Kontrastdruck aufweisen.1. Indirectly luminous display surface, with fluorescent material embedded in transparent plastic being stimulated to emit radiation by the action of light, characterized in that on the edges of the display surface (AF) light-emitting diodes (LED) are attached so that they emit their light into the cut surfaces of the At display area (AF) can bring in evenly, the wavelength of this light being matched to the wavelength of the fluorescent dyes embedded in the plastic, and that partial areas (TF) are coated with a reflective layer and / or have a contrast print. 2. Anzeigefläche nach Anspruch 1, dadurch gekennzeichnet, daß Teilflächen (TF) mit Farbstoffen anderer Wellenlänge ausge­ stattet sind und dann mit anderer Farbe und/oder anderer Hellig­ keit leuchten.2. Display area according to claim 1, characterized in that partial areas (TF) are equipped with dyes of different wavelengths and then shine with a different color and / or different brightness. 3. Anzeigefläche nach Anspruch 1, dadurch gekennzeichnet, daß die Leuchtdioden (LED) das Licht als leuchtenden Balken emi­ tieren. 3. Display area according to claim 1, characterized in that the light emitting diodes (LED) emit the light as a luminous bar. 4. Anzeigefläche nach Anspruch 1, dadurch gekennzeichnet, daß die Leuchtdioden (LED) von außen unsichtbar in einem die An­ zeigefläche (AF) umschließenden Rahmen (R) untergebracht sind.4. Display area according to claim 1, characterized in that the light emitting diodes (LED) are invisible from the outside in a frame (R) surrounding the display area (AF) . 5. Anzeigefläche nach Anspruch 1, dadurch gekennzeichnet, daß sie als Zifferblatt einer Uhr ausgebildet ist, wobei die für die Minuterie (M) beanspruchte Teilfläche (TF) so beschaffen ist, daß sie mit einer anderen Helligkeit strahlt, als der übrige Teil der Anzeigefläche (AF), und daß die Skalenstriche kontrastierend aufgedruckt sind und nicht leuchten.5. Display area according to claim 1, characterized in that it is designed as a dial of a clock, the sub-area (TF) claimed for the minute track (M ) being such that it shines with a different brightness than the rest of the display area (AF) , and that the tick marks are printed in contrast and do not light up.
DE19883836173 1988-10-24 1988-10-24 Indirectly luminous display surface Withdrawn DE3836173A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19883836173 DE3836173A1 (en) 1988-10-24 1988-10-24 Indirectly luminous display surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19883836173 DE3836173A1 (en) 1988-10-24 1988-10-24 Indirectly luminous display surface

Publications (1)

Publication Number Publication Date
DE3836173A1 true DE3836173A1 (en) 1990-04-26

Family

ID=6365791

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883836173 Withdrawn DE3836173A1 (en) 1988-10-24 1988-10-24 Indirectly luminous display surface

Country Status (1)

Country Link
DE (1) DE3836173A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305242A1 (en) * 1993-02-20 1994-08-25 Kundo Staiger Gmbh Electrical crystal alarm clock
WO2003045709A1 (en) * 2001-11-27 2003-06-05 Iouri Sokolov Method of producing a luminescent image on hard media, an advertising device and a food packaging produced using the method
FR2932299A1 (en) * 2008-06-10 2009-12-11 Erg Transit Systems Fra Light signal transmitting apparatus i.e. validation terminal, for punching fare ticket, in city motor bus, has cover forming diffuser of light radiations emitted by light source situated behind inner surface of cover
DE102009015448A1 (en) * 2009-03-28 2010-10-07 BÜRK MOBATIME GmbH Lighting unit for lighting face of large clock, has multiple LEDs arranged on two even transparent carriers that are spaced from each other, and diffuser surface provided for homogenization of light produced by LEDs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142098A1 (en) * 1981-10-23 1983-05-05 Vdo Adolf Schindling Ag, 6000 Frankfurt DISPLAY DEVICE
DE3321738A1 (en) * 1983-06-16 1984-12-20 Basf Ag, 6700 Ludwigshafen Optical display elements
DE3730591C1 (en) * 1987-09-11 1988-07-07 Inotec Gmbh Ges Fuer Innovativ Illuminated display unit, in particular house number, traffic sign, advertising medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142098A1 (en) * 1981-10-23 1983-05-05 Vdo Adolf Schindling Ag, 6000 Frankfurt DISPLAY DEVICE
DE3321738A1 (en) * 1983-06-16 1984-12-20 Basf Ag, 6700 Ludwigshafen Optical display elements
DE3730591C1 (en) * 1987-09-11 1988-07-07 Inotec Gmbh Ges Fuer Innovativ Illuminated display unit, in particular house number, traffic sign, advertising medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305242A1 (en) * 1993-02-20 1994-08-25 Kundo Staiger Gmbh Electrical crystal alarm clock
WO2003045709A1 (en) * 2001-11-27 2003-06-05 Iouri Sokolov Method of producing a luminescent image on hard media, an advertising device and a food packaging produced using the method
FR2932299A1 (en) * 2008-06-10 2009-12-11 Erg Transit Systems Fra Light signal transmitting apparatus i.e. validation terminal, for punching fare ticket, in city motor bus, has cover forming diffuser of light radiations emitted by light source situated behind inner surface of cover
DE102009015448A1 (en) * 2009-03-28 2010-10-07 BÜRK MOBATIME GmbH Lighting unit for lighting face of large clock, has multiple LEDs arranged on two even transparent carriers that are spaced from each other, and diffuser surface provided for homogenization of light produced by LEDs
DE102009015448B4 (en) * 2009-03-28 2011-01-13 BÜRK MOBATIME GmbH Clock with LED lighting unit

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Legal Events

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8127 New person/name/address of the applicant

Owner name: TELENORMA GMBH, 6000 FRANKFURT, DE

8110 Request for examination paragraph 44
8130 Withdrawal