EP1931178A1 - Method for operating a flat, internally illuminated display device for traffic information and display device for performing the process - Google Patents

Method for operating a flat, internally illuminated display device for traffic information and display device for performing the process Download PDF

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Publication number
EP1931178A1
EP1931178A1 EP06450174A EP06450174A EP1931178A1 EP 1931178 A1 EP1931178 A1 EP 1931178A1 EP 06450174 A EP06450174 A EP 06450174A EP 06450174 A EP06450174 A EP 06450174A EP 1931178 A1 EP1931178 A1 EP 1931178A1
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EP
European Patent Office
Prior art keywords
display device
housing
traffic information
leds
light sources
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Withdrawn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
EP06450174A
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German (de)
French (fr)
Inventor
Harald Rosenitsch
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP06450174A priority Critical patent/EP1931178A1/en
Publication of EP1931178A1 publication Critical patent/EP1931178A1/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]

Definitions

  • the invention relates to a method for operating a flat, interior-illuminated traffic information display device, with light sources arranged in a housing, which are covered to the outside by a transparent plate carrying the traffic information. Furthermore, the subject of the invention is a display device for carrying out the method.
  • display devices of the type mentioned are known in which light bulbs or fluorescent lamps are used as light sources.
  • a disadvantage of such displays is that on the one hand no uniform light distribution is achieved on the visible surface, at low temperatures less light power is provided and on the other hand, the power consumption of such lamps is relatively high and the lifetime of these lamps is very limited compared to LEDs.
  • LEDs have been used in other fields of display technology, but a simple replacement of the fluorescent lamps by LEDs is not readily possible.
  • the Authority requires in particular airports, e.g. a yellow with a wavelength of 573 - 583 nm. This yellow can not be achieved with commercially available plates made of Plexiglas and single-color LEDs. Required special designs are difficult or expensive and only available in large quantities.
  • the invention has set itself the goal of creating a method of the type mentioned, in which the officially prescribed values can be achieved, but the acquisition or production of even smaller quantities is possible without great expense. This is achieved by operating differently colored LED's with corresponding currents (voltages) to produce, in particular, government-prescribed color shades and intensities as light sources until the prescribed light values are reached. By Changing the currents (voltages), it is possible that the mixed colors produced come relatively accurately in the specified range of eg 570 nm or other wavelengths.
  • alternating yellow and green LEDs are arranged in a holder fastened in the housing.
  • a simple attachment of the brackets in the housing is inventively achieved in that the housing has slots for inserting the brackets.
  • a housing 1 is supported on feet 2, and the front of the housing is covered by a translucent plate 3.
  • This plate 3 carries a traffic information 4.
  • At least one profile frame 5 is fixed, which holds at least one holder 6.
  • Each holder 6 is used in the embodiment ( Fig. 3 ) for fixing three times six green LED's 7 and eight yellow LEDs 8.
  • Fig. 3 only one row of LEDs is drawn, the other rows are indicated by center lines or the last row is not shown anymore.
  • the profile frame 5 has slots 9, in which the holders 6 can be inserted.
  • a slot 10 serves to receive the plate. 3
  • the currents (voltages) for the individual LEDs are inventively changed until the predetermined range of the wavelength of the emitted light or the corresponding color is reached. As a result, production and batch-related color changes of the plexiglass and the LED's can be compensated.

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  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

The method involves arranging light sources (7,8) in a housing. A translucent plate carrying the traffic information projecting outside covers the light sources. The different colored light emitting diode (LED) with corresponding currents or voltages are operated as light source for producing particularly regulatory preset tones and intensities, till the prescribed exposure values are reached. An independent claim is also included for a display device for execution of the method.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Betrieb einer flächigen, innenbeleuchteten Anzeigeeinrichtung für Verkehrsinformationen, mit in einem Gehäuse angeordneten Lichtquellen, die nach außen hin durch eine die Verkehrsinformation tragende durchscheinende Platte abgedeckt sind. Ferner ist Gegenstand der Erfindung eine Anzeigeeinrichtung zur Durchführung des Verfahrens.The invention relates to a method for operating a flat, interior-illuminated traffic information display device, with light sources arranged in a housing, which are covered to the outside by a transparent plate carrying the traffic information. Furthermore, the subject of the invention is a display device for carrying out the method.

Zur Wiedergabe von Verkehrsinformationen, insbesondere auf Flugplätzen, sind Anzeigeeinrichtungen der genannten Art bekannt, bei denen als Lichtquellen Glühlampen oder Leuchtstofflampen verwendet werden. Nachteilig bei solchen Anzeigeeinrichtungen ist, dass einerseits keine gleichmäßige Lichtverteilung auf der Sichtfläche erzielt wird, bei niedrigen Temperaturen weniger Lichtleistung erbracht wird und andererseits der Stromverbrauch solcher Lampen relativ hoch ist und auch die Lebensdauer dieser Lampen im Vergleich zu LED's sehr begrenzt ist.To display traffic information, in particular at airports, display devices of the type mentioned are known in which light bulbs or fluorescent lamps are used as light sources. A disadvantage of such displays is that on the one hand no uniform light distribution is achieved on the visible surface, at low temperatures less light power is provided and on the other hand, the power consumption of such lamps is relatively high and the lifetime of these lamps is very limited compared to LEDs.

Auf anderen Gebieten der Anzeigetechnik wurden schon LED's eingesetzt, jedoch ist ein einfacher Austausch der Leuchtstofflampen durch LED's nicht ohne weiteres möglich. Die Behörde verlangt insbesondere auf Flughäfen, z.B. ein Gelb mit einer Wellenlänge von 573 - 583 nm. Dieses Gelb kann mit handelsüblichen Platten aus Plexiglas und einfärbigen LED's nicht erreicht werden. Erforderliche Sonderanfertigungen sind jedoch schwierig bzw. teuer und nur in großen Mengen erhältlich.LEDs have been used in other fields of display technology, but a simple replacement of the fluorescent lamps by LEDs is not readily possible. The Authority requires in particular airports, e.g. a yellow with a wavelength of 573 - 583 nm. This yellow can not be achieved with commercially available plates made of Plexiglas and single-color LEDs. Required special designs are difficult or expensive and only available in large quantities.

Die Erfindung hat es sich insbesondere zum Ziel gesetzt, ein Verfahren der eingangs genannten Art zu schaffen, bei dem die behördlich vorgegebenen Werte erreicht werden können, wobei jedoch die Anschaffung bzw. Herstellung auch kleinerer Stückzahlen ohne großen Kostenaufwand möglich ist. Erreicht wird dies dadurch, dass zur Erzeugung insbesondere behördlich vorgegebener Farbtöne und Intensitäten als Lichtquellen verschiedenfarbige LED's mit entsprechenden Strömen (Spannungen) betrieben werden, bis die vorgeschriebenen Lichtwerte erreicht sind. Durch Veränderung der Ströme (Spannungen) ist es möglich, dass die erzeugten Mischfarben relativ genau in den vorgegebenen Bereich von z.B. 570 nm oder andere Wellenlängen kommen.The invention has set itself the goal of creating a method of the type mentioned, in which the officially prescribed values can be achieved, but the acquisition or production of even smaller quantities is possible without great expense. This is achieved by operating differently colored LED's with corresponding currents (voltages) to produce, in particular, government-prescribed color shades and intensities as light sources until the prescribed light values are reached. By Changing the currents (voltages), it is possible that the mixed colors produced come relatively accurately in the specified range of eg 570 nm or other wavelengths.

Bei einer vorteilhaften Ausführungsform einer Anzeigeeinrichtung zur Durchführung dieses Verfahrens sind abwechselnd gelbe und grüne LED's in einer im Gehäuse befestigten Halterung angeordnet.In an advantageous embodiment of a display device for carrying out this method, alternating yellow and green LEDs are arranged in a holder fastened in the housing.

Es ist dabei zweckmäßig, wenn in einer Halterung spannungsbedingt (24V) acht gelbe und sechs grüne LED's abwechselnd untereinander angeordnet sind und mehrere Halterungen nebeneinander im Gehäuse befestigt sind.It is expedient if in a holder voltage-related (24V) eight yellow and six green LEDs are arranged alternately with each other and a plurality of brackets are mounted side by side in the housing.

Eine einfache Befestigung der Halterungen im Gehäuse wird erfindungsgemäß dadurch erreicht, dass das Gehäuse Schlitze zum Einschieben der Halterungen aufweist.A simple attachment of the brackets in the housing is inventively achieved in that the housing has slots for inserting the brackets.

Nachstehend ist die Erfindung anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher beschrieben, ohne auf dieses Beispiel beschränkt zu sein.
Dabei zeigt

Fig. 1
in schaubildlicher Ansicht eine flächige, innenbeleuchtete Anzeigeeinrichtung ;
Fig. 2
eine erfindungsgemäße Halterung, die in Schlitze des Gehäuses eingeschoben ist;
Fig. 3
eine teilweise Ansicht einer Halterung.
The invention will be described in more detail below with reference to an embodiment shown in the drawings, without being limited to this example.
It shows
Fig. 1
in a perspective view, a flat, interior illuminated display device;
Fig. 2
a holder according to the invention, which is inserted into slots of the housing;
Fig. 3
a partial view of a holder.

Gemäß Fig. 1 ist ein Gehäuse 1 auf Füßen 2 abgestützt, und die Vorderseite des Gehäuses ist durch eine durchscheinende Platte 3 abgedeckt. Diese Platte 3 trägt eine Verkehrsinformation 4.According to Fig. 1 a housing 1 is supported on feet 2, and the front of the housing is covered by a translucent plate 3. This plate 3 carries a traffic information 4.

Im Gehäuse 1 ist wenigstens ein Profilrahmen 5 befestigt, der mindestens eine Halterung 6 hält. Jede Halterung 6 dient im Ausführungsbeispiel (Fig. 3) zur Befestigung von drei mal sechs grünen LED's 7 und acht gelben LED's 8. In Fig. 3 ist nur eine Reihe von LED's gezeichnet, die anderen Reihen sind durch Mittellinien angedeutet bzw. ist die letzte Reihe nicht mehr dargestellt.In the housing 1, at least one profile frame 5 is fixed, which holds at least one holder 6. Each holder 6 is used in the embodiment ( Fig. 3 ) for fixing three times six green LED's 7 and eight yellow LEDs 8. In Fig. 3 only one row of LEDs is drawn, the other rows are indicated by center lines or the last row is not shown anymore.

An bzw. in den Halterungen 6 sind auch die elektrischen Teile, insbesondere die Regler, für die Anspeisung der LED's 7, 8 angeordnet.On or in the brackets 6 and the electrical parts, in particular the controller, for the supply of the LED's 7, 8 are arranged.

Der Profilrahmen 5 weist Schlitze 9 auf, in welche die Halterungen 6 eingeschoben werden können. Ein Schlitz 10 dient der Aufnahme der Platte 3.The profile frame 5 has slots 9, in which the holders 6 can be inserted. A slot 10 serves to receive the plate. 3

Die Ströme (Spannungen) für die einzelnen LED's werden erfindungsgemäß solange verändert, bis der vorgegebene Bereich der Wellenlänge des ausgesandten Lichtes bzw. die entsprechende Farbe erreicht ist. Dadurch können auch fertigungs- und chargenbedingte Farbveränderungen des Plexiglases und der LED's ausgeglichen werden.The currents (voltages) for the individual LEDs are inventively changed until the predetermined range of the wavelength of the emitted light or the corresponding color is reached. As a result, production and batch-related color changes of the plexiglass and the LED's can be compensated.

Im Rahmen der Erfindung sind zahlreiche Abänderungen möglich. So könnte die Anbringung der LED's 7, 8 im Gehäuse 1 anders als dargestellt erfolgen. Auch die Anzahl, das Verhältnis und die Farben der LED's könnte verändert werden.Numerous modifications are possible within the scope of the invention. Thus, the attachment of the LEDs 7, 8 in the housing 1 could be done differently than shown. Also, the number, the ratio and the colors of the LED's could be changed.

Claims (5)

Verfahren zum Betrieb einer flächigen, innen beleuchteten Anzeigeeinrichtung für Verkehrsinformationen, mit in einem Gehäuse (1) angeordneten Lichtquellen (7, 8), die nach außen hin durch eine die Verkehrsinformation (4) tragende durchscheinende Platte (3) abgedeckt sind, dadurch gekennzeichnet, dass zur Erzeugung insbesondere behördlich vorgegebener Farbtöne und Intensitäten als Lichtquellen verschiedenfarbige LED's (8, 7) mit entsprechenden Strömen (Spannungen) betrieben werden, bis die vorgeschriebenen Lichtwerte erreicht sind.Method for operating a flat, internally illuminated traffic information display device, with light sources (7, 8) arranged in a housing (1), which are covered on the outside by a translucent plate (3) carrying the traffic information (4), characterized in that different colored LED's (8, 7) are operated with corresponding currents (voltages) until the prescribed light values are reached in order to produce, in particular, color shades and intensities prescribed by the authorities. Anzeigeeinrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, dass als Lichtquellen gelbe (8) und grüne (7) LED's angeordnet sind, die mit verschiedenen Spannungen betrieben werden.Display device for carrying out the method according to claim 1, characterized in that as light sources yellow (8) and green (7) LEDs are arranged, which are operated with different voltages. Anzeigeeinrichtung nach Anspruch 2, dadurch gekennzeichnet, dass abwechselnd verschiedenfarbige LED's (7, 8) in einer im Gehäuse (1) befestigten Halterung (6) angeordnet sind.Display device according to claim 2, characterized in that alternately differently colored LEDs (7, 8) are arranged in a housing (1) fixed to the holder (6). Anzeigeeinrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass in einer Halterung (6) drei mal acht gelbe (8) und sechs grüne (7) LED's abwechselnd untereinander angeordnet sind und mehrere Halterungen (6) nebeneinander im Gehäuse (1) befestigt sind.Display device according to claim 2 or 3, characterized in that in a holder (6) three times eight yellow (8) and six green (7) LEDs are arranged alternately with each other and a plurality of holders (6) are mounted side by side in the housing (1). Anzeigeeinrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Gehäuse (1) Schlitze (9) zum Einschieben der Halterungen (6) aufweist.Display device according to claim 3 or 4, characterized in that the housing (1) has slots (9) for insertion of the holders (6).
EP06450174A 2006-12-05 2006-12-05 Method for operating a flat, internally illuminated display device for traffic information and display device for performing the process Withdrawn EP1931178A1 (en)

Priority Applications (1)

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EP06450174A EP1931178A1 (en) 2006-12-05 2006-12-05 Method for operating a flat, internally illuminated display device for traffic information and display device for performing the process

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EP06450174A EP1931178A1 (en) 2006-12-05 2006-12-05 Method for operating a flat, internally illuminated display device for traffic information and display device for performing the process

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EP1931178A1 true EP1931178A1 (en) 2008-06-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019077535A1 (en) * 2017-10-18 2019-04-25 Wolman Adrian Trevor An illuminated display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4298869A (en) * 1978-06-29 1981-11-03 Zaidan Hojin Handotai Kenkyu Shinkokai Light-emitting diode display
WO1999039319A2 (en) * 1998-01-29 1999-08-05 Ledi-Lite Ltd. Illuminated sign system
US6323781B1 (en) * 2000-08-22 2001-11-27 Power Signal Technologies Electronically steerable light output viewing angles for traffic signals
WO2003058578A1 (en) * 2002-01-08 2003-07-17 Power Signal Technologies, Inc. Pedestrian traffic signal comprising countdown display

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4298869A (en) * 1978-06-29 1981-11-03 Zaidan Hojin Handotai Kenkyu Shinkokai Light-emitting diode display
WO1999039319A2 (en) * 1998-01-29 1999-08-05 Ledi-Lite Ltd. Illuminated sign system
US6323781B1 (en) * 2000-08-22 2001-11-27 Power Signal Technologies Electronically steerable light output viewing angles for traffic signals
WO2003058578A1 (en) * 2002-01-08 2003-07-17 Power Signal Technologies, Inc. Pedestrian traffic signal comprising countdown display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019077535A1 (en) * 2017-10-18 2019-04-25 Wolman Adrian Trevor An illuminated display device

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