EP0609710A1 - Display element for elevators - Google Patents

Display element for elevators Download PDF

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Publication number
EP0609710A1
EP0609710A1 EP94100774A EP94100774A EP0609710A1 EP 0609710 A1 EP0609710 A1 EP 0609710A1 EP 94100774 A EP94100774 A EP 94100774A EP 94100774 A EP94100774 A EP 94100774A EP 0609710 A1 EP0609710 A1 EP 0609710A1
Authority
EP
European Patent Office
Prior art keywords
light
display element
element according
emitting diodes
lens
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.)
Granted
Application number
EP94100774A
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German (de)
French (fr)
Other versions
EP0609710B1 (en
Inventor
James L. Murphy
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.)
Inventio AG
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Inventio AG
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Filing date
Publication date
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Publication of EP0609710A1 publication Critical patent/EP0609710A1/en
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B3/00—Applications of devices for indicating or signalling operating conditions of elevators
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Definitions

  • the invention relates to a display element for elevators with light-emitting diodes arranged on a printed circuit, the light of which, by means of a lens, represents important information for the passenger in the form of symbols.
  • a display element is known from EP application specification 92110333.9 with US priority 07/736084 dated July 26, 1991, in which light-emitting diodes are used instead of light bulbs to represent symbols, such as driving direction arrows.
  • Light-emitting diodes arranged in an arrow shape on a printed circuit board are immersed in an arrow-shaped lens housing into which lenses are embedded.
  • the display element is closed off by a filter plate on the display side.
  • a disadvantage of the known device is the complicated structure of the symbol to be displayed.
  • the lens housing arranged on a lens carrier and the lenses embedded therein necessitate a complex and costly production process.
  • only one symbol can be displayed with this design.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, achieves the object of avoiding the disadvantages of the known device and of creating a display element in which different symbols with incandescent illuminance can be represented with simple means.
  • the advantage achieved by the invention is essentially to be seen in the fact that, in existing devices, lightbulb-operated display elements can be replaced by light-emitting diode-operated display elements without the aesthetic presentation being impaired by different illuminance levels.
  • 1 denotes a cover plate with an opening, not shown, through which a lens 2 passes, the collar of which bears on the rear side of the cover plate 1.
  • a light diffuser 4 immersed in the rear of the lens 2 consists of a body 5 which is dependent in the form of the symbol to be represented, with an am Lens collar 3 pending flange 6. So that the light emitted by the lens 2 appears to the viewer as white as possible and without a light shadow, the light diffuser 4 is made of translucent polycarbonates with a white tint.
  • Light-emitting diodes LED1... LED15 which are arranged in the light diffuser 4 and are provided as light transmitters, are provided on a printed circuit 7 and emit light with a wavelength of 590 nm, for example.
  • the electrical circuit diagram shown in Fig. 3 shows a first group of light emitting diodes LED1 ... LED5, a second group of light emitting diodes LED6 ... LED10 and a third group of light emitting diodes LED11 ... LED15, which are connected in parallel on one of the bridge branches the diodes D1 ... D4 bridge rectifiers formed.
  • the other bridge branch is connected to the connecting wires L1; L2, to which the supply voltage is applied.
  • a supply voltage of 120 V AC the first bridge A and the third bridge C are opened and the second resistor R2 and the third resistor R3 are removed.
  • With a supply voltage of 24 V DC the second bridge B and the fourth bridge D are opened.
  • the display element according to the invention is shown in flat construction in FIG. 4.
  • Light-emitting diodes LED1 ... LED15 are immersed in a light reflector 10 made of white polycarbonates or of white coated metal, which is closed off by a disk-shaped light diffuser 4 which is translucent for the symbol to be represented.
  • a correspondingly flat lens 2 closes off the display element against the cover plate 1.
  • Lens 2 can vary in size and shape depending on the application and the symbol to be displayed. Accordingly, the light emitting diodes LED1 ... LED15 are arranged distributed on the printed circuit 7.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Road Signs Or Road Markings (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Push-Button Switches (AREA)

Abstract

In the case of this display element a lens (2) enters into a cover plate (1). A light diffusor (4) dipping into the lens (2) from the rear consists of a body whose shape depends on the symbol to be represented and has a flange at a lens collar. Light-emitting diodes (LED1 ... LED15) which dip into the light diffusor (4) and are arranged on a printed circuit (7) are provided as light transmitter, which light-emitting diodes emit light for example at a wavelength of 590 nm. Green or red light-emitting diodes or those of other colours (LED1 ... LED15) are inserted as required. The side of the printed circuit (7) having the light-emitting diodes as well as the side wall of the light diffusor (4) are coated white for improved light reflection. Lens (2), light diffusor (4), and printed circuit (7) are held by support bolts (8) and nuts (9) arranged on the cover plate (1). <IMAGE>

Description

Die Erfindung betrifft ein Anzeigeelement für Aufzüge mit auf einer gedruckten Schaltung angeordneten Leuchtdioden, deren Licht mittels einer Linse für den Fahrgast wichtige Information in der Form von Symbolen darstellt.The invention relates to a display element for elevators with light-emitting diodes arranged on a printed circuit, the light of which, by means of a lens, represents important information for the passenger in the form of symbols.

Aus der EP Anmeldeschrift 92110333.9 mit US Priorität 07/736084 vom 26.07.1991 ist ein Anzeigeelement bekannt, bei dem anstelle von Glühbirnen Leuchtdioden zur Darstellung von Symbolen wie beispielsweise Fahrrichtungspfeilen verwendet werden. Auf einer gedruckten Schaltung pfeilförmig angeordnete Leuchtdioden tauchen in Linsengehäuse von pfeilartiger Form ein, in die Linsen eingelassen sind. Auf der Anzeigeseite wird das Anzeigeelement von einer Filterplatte abgeschlossen.A display element is known from EP application specification 92110333.9 with US priority 07/736084 dated July 26, 1991, in which light-emitting diodes are used instead of light bulbs to represent symbols, such as driving direction arrows. Light-emitting diodes arranged in an arrow shape on a printed circuit board are immersed in an arrow-shaped lens housing into which lenses are embedded. The display element is closed off by a filter plate on the display side.

Ein Nachteil der bekannten Einrichtung liegt im komplizierten Aufbau des darzustellenden Symbols. Die auf einem Linsenträger angeordneten Linsengehäuse und die darin eingelassenen Linsen bedingen ein aufwendiges und kostspieliges Herstellungsverfahren. Zudem kann mit dieser Bauweise jeweils nur ein Symbol dargestellt werden.A disadvantage of the known device is the complicated structure of the symbol to be displayed. The lens housing arranged on a lens carrier and the lenses embedded therein necessitate a complex and costly production process. In addition, only one symbol can be displayed with this design.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe, die Nachteile der bekannten Einrichtung zu vermeiden und ein Anzeigeelement zu schaffen, bei dem mit einfachen Mitteln unterschiedliche Symbole mit Glühlampenbeleuchtungsstärke darstellbar sind.The invention seeks to remedy this. The invention, as characterized in the claims, achieves the object of avoiding the disadvantages of the known device and of creating a display element in which different symbols with incandescent illuminance can be represented with simple means.

Der durch die Erfindung erreichte Vorteil ist im wesentlichen darin zu sehen, dass in bestehenden Einrichtungen glühbirnenbetriebene Anzeigeelemente durch leuchtdiodenbetriebene Anzeigeelemente ersetzt werden können ohne dass dabei die ästhetische Aufmachung durch unterschiedliche Beleuchtungsstärken beeinträchtigt wird.The advantage achieved by the invention is essentially to be seen in the fact that, in existing devices, lightbulb-operated display elements can be replaced by light-emitting diode-operated display elements without the aesthetic presentation being impaired by different illuminance levels.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnungen näher erläutert.
Es zeigen:

Fig. 1
Ein erfindungsgemässes Anzeigeelement mit Leuchtdioden zur Darstellung von unterschiedlichen Symbolen,
Fig. 2
einen Aufriss und einen Grundriss eines im erfindungsgemässen Anzeigeelement verwendeten Lichtdiffusors,
Fig. 3
ein elektrisches Schaltbild des leuchtdiodenbetriebenen Anzeigeelementes und
Fig. 4
eine Ausführungsvariante des erfindungsgemässen Anzeigeelementes in Flachbauweise.
The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment.
Show it:
Fig. 1
A display element according to the invention with light-emitting diodes for displaying different symbols,
Fig. 2
1 shows an elevation and a floor plan of a light diffuser used in the display element according to the invention,
Fig. 3
an electrical circuit diagram of the light-emitting diode-operated display element and
Fig. 4
a variant of the display element according to the invention in a flat design.

In den Fig. 1 bis 4 ist mit 1 eine Deckplatte mit einer nicht dargestellten Öffnung bezeichnet, durch die eine Linse 2 tritt, deren Kragen rückseitig an der Deckplatte 1 ansteht. Ein rückseitig in die Linse 2 eintauchender Lichtdiffusor 4 besteht aus einem in der Form vom darzustellenden Symbol abhängigen Körper 5 mit einem am Linsenkragen 3 anstehenden Flansch 6 auf. Damit das von der Linse 2 abgestrahlte Licht für den Betrachter möglichst weiss und ohne Lichtschatten erscheint, wird der Lichtdiffusor 4 aus lichtdurchlässigen Polycarbonaten mit weisser Tönung gefertigt. Als Lichtsender sind auf einer gedruckten Schaltung 7 angeordnete, in den Lichtdiffusor 4 eintauchende Leuchtdioden LED1 ... LED15 vorgesehen, die beispielsweise Licht mit einer Wellenlänge von 590 nm aussenden. Grün-, rot- oder andersfarbige Leuchtdioden LED1 ... LED15 werden je nach Bedarf eingesetzt. Brücken A;B;C;D, Widerstände R1 ... R3, Dioden D1 ... D4 und Anschlussdrähte L1;L2 dienen der Beschaltung der Leuchtdioden LED1 ... LED15. Die Leuchtdiodenseite der gedruckten Schaltung 7 wie auch die Seitenwand des Lichtdiffusors 4 werden zur besseren Lichtreflexion weiss beschichtet. Linse 2, Lichtdiffusor 4 und gedruckte Schaltung 7 werden von an der Deckplatte 1 angeordneten Trägerbolzen 8 und Muttern 9 gehalten.1 to 4, 1 denotes a cover plate with an opening, not shown, through which a lens 2 passes, the collar of which bears on the rear side of the cover plate 1. A light diffuser 4 immersed in the rear of the lens 2 consists of a body 5 which is dependent in the form of the symbol to be represented, with an am Lens collar 3 pending flange 6. So that the light emitted by the lens 2 appears to the viewer as white as possible and without a light shadow, the light diffuser 4 is made of translucent polycarbonates with a white tint. Light-emitting diodes LED1... LED15, which are arranged in the light diffuser 4 and are provided as light transmitters, are provided on a printed circuit 7 and emit light with a wavelength of 590 nm, for example. Green, red or other colored LEDs LED1 ... LED15 are used as required. Bridges A; B; C; D, resistors R1 ... R3, diodes D1 ... D4 and connecting wires L1; L2 are used to connect the LEDs LED1 ... LED15. The light-emitting diode side of the printed circuit 7 as well as the side wall of the light diffuser 4 are coated white for better light reflection. Lens 2, light diffuser 4 and printed circuit 7 are held by support bolts 8 and nuts 9 arranged on the cover plate 1.

Das in Fig. 3 dargestellte elektrische Schaltbild zeigt eine erste Gruppe von Leuchtdioden LED1 ... LED5, eine zweite Gruppe von Leuchtdioden LED6 ... LED10 und eine dritte Gruppe von Leuchtdioden LED11 ... LED15, die in Parallelschaltung am einen Brückenzweig eines durch die Dioden D1 ... D4 gebildeten Brückengleichrichter liegen. Der andere Brückenzweig ist mit den Anschlussdrähten L1;L2 verbunden, an denen die Versorgungsspannung anliegt. Bei einer Versorgungsspannung von 120 V AC werden die erste Brücke A und die dritte Brücke C geöffnet sowie der zweite Widerstand R2 und der dritte Widerstand R3 entfernt. Bei einer Versorgungsspannung von 24 V DC werden die zweite Brücke B und die vierte Brücke D geöffnet.The electrical circuit diagram shown in Fig. 3 shows a first group of light emitting diodes LED1 ... LED5, a second group of light emitting diodes LED6 ... LED10 and a third group of light emitting diodes LED11 ... LED15, which are connected in parallel on one of the bridge branches the diodes D1 ... D4 bridge rectifiers formed. The other bridge branch is connected to the connecting wires L1; L2, to which the supply voltage is applied. With a supply voltage of 120 V AC, the first bridge A and the third bridge C are opened and the second resistor R2 and the third resistor R3 are removed. With a supply voltage of 24 V DC, the second bridge B and the fourth bridge D are opened.

Als weiteres Ausführungsbeispiel ist in Fig. 4 das erfindungsgemässe Anzeigeelement in Flachbauweise dargestellt. Leuchtdioden LED1 ... LED15 tauchen in einen Lichtreflektor 10 aus weissen Polycarbonaten oder aus weiss beschichtetem Metall ein, der von einem scheibenförmigen, für das darzustellende Symbol lichtdurchlässigen Lichtdiffusor 4 abgeschlossen wird. Eine dementsprechend flach gebaute Linse 2 schliesst das Anzeigeelement gegen die Deckplatte 1 ab.As a further exemplary embodiment, the display element according to the invention is shown in flat construction in FIG. 4. Light-emitting diodes LED1 ... LED15 are immersed in a light reflector 10 made of white polycarbonates or of white coated metal, which is closed off by a disk-shaped light diffuser 4 which is translucent for the symbol to be represented. A correspondingly flat lens 2 closes off the display element against the cover plate 1.

Linse 2, Lichtdiffusor 4, Reflektor 10 und die gedruckte Schaltung 7 können je nach Anwendung und darzustellendes Symbol in Grösse und Form variieren. Dementsprechend werden die Leuchtdioden LED1 ... LED15 auf der gedruckten Schaltung 7 verteilt angeordnet.Lens 2, light diffuser 4, reflector 10 and the printed circuit 7 can vary in size and shape depending on the application and the symbol to be displayed. Accordingly, the light emitting diodes LED1 ... LED15 are arranged distributed on the printed circuit 7.

Claims (11)

Anzeigeelement für Aufzüge mit auf einer gedruckten Schaltung (7) angeordneten Leuchtdioden (LED1 ... LED15), deren Licht mittels einer Linse (2) für den Fahrgast wichtige Information in der Form von Symbolen darstellt,
dadurch gekennzeichnet,
dass Mittel zur Lenkung des Leuchtdiodenlichtes auf einen Lichtdiffusor (4) vorgesehen sind, der das Leuchtdiodenlicht je nach darzustellendem Symbol an die Linse (2) weiterleitet.Display element for lifts with light-emitting diodes (LED1 ... LED15) arranged on a printed circuit (7), the light of which, by means of a lens (2), represents important information for the passenger in the form of symbols,
characterized,
that means for directing the light-emitting diode light are provided on a light diffuser (4) which forwards the light-emitting diode light to the lens (2) depending on the symbol to be displayed. Anzeigeelement nach Anspruch 1,
dadurch gekennzeichnet,
dass zur Lichtlenkung eine weisse Beschichtung auf der Leuchtdiodenseite der gedruckten Schaltung (7) und an den Seitenwänden des Lichtdiffusors (4) vorgesehen ist.Display element according to claim 1,
characterized,
that a white coating is provided on the light-emitting diode side of the printed circuit (7) and on the side walls of the light diffuser (4) for directing light. Anzeigeelement nach Anspruch 1 und 2,
dadurch gekennzeichnet,
dass der Lichtdiffusor (4) aus lichtdurchlässigen Polycarbonaten mit weisser Tönung ist.Display element according to claim 1 and 2,
characterized,
that the light diffuser (4) is made of translucent polycarbonates with a white tint. Anzeigeelement nach Anspruch 1,
dadurch gekennzeichnet,
dass zur Lichtlenkung ein Lichtreflektor (10) vorgesehen ist, in den die Leuchtdioden (LED1 ... LED15) eintauchen und der das Leuchtdiodenlicht an den Lichtdiffusor (4) weiterleitet.Display element according to claim 1,
characterized,
that a light reflector (10) is provided for directing light, into which the light-emitting diodes (LED1 ... LED15) are immersed and which transmits the light-emitting diode light to the light diffuser (4). Anzeigeelement nach Anspruch 4,
dadurch gekennzeichnet,
dass der Lichtreflektor (10) aus weissen Polycarbonaten ist.Display element according to claim 4,
characterized,
that the light reflector (10) is made of white polycarbonates. Anzeigeelement nach Anspruch 4,
dadurch gekennzeichnet,
dass der Lichtreflektor (10) aus weiss beschichtetem Metall ist.Display element according to claim 4,
characterized,
that the light reflector (10) is made of white coated metal. Anzeigeelement nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass Lichtreflektor (10), Lichtdiffusor (4) und Linse (2) in Flachbauweise ausgeführt sind.Display element according to one of the preceding claims,
characterized,
that light reflector (10), light diffuser (4) and lens (2) are designed in a flat design. Anzeigeelement nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet,
dass gedruckte Schaltung (7), Lichtreflektor (10), Lichtdiffusor (4) und Linse (2) von an einer Deckplatte (1) angeordneten Trägerbolzen (8) gehalten werden.Display element according to one of the preceding claims,
characterized,
that the printed circuit (7), light reflector (10), light diffuser (4) and lens (2) are held by carrier bolts (8) arranged on a cover plate (1). Anzeigeelement nach Anspruch 1,
dadurch gekennzeichnet,
dass mindestens eine Gruppe von Leuchtdioden (LED1 ... LED5;LED6 ... LED10;LED11 ... LED15) am einen Brückenzweig eines durch Dioden (D1 ... D4) gebildeten Brückengleichrichters liegen und der andere Brückenzweig mit der Versorgungsspannung beaufschlagt ist, wobei Widerstände (R1 ... R3) je nach Versorgungsspannung in Serie zur Leuchtdiodengruppe geschaltet sind.Display element according to claim 1,
characterized,
that at least one group of light-emitting diodes (LED1 ... LED5; LED6 ... LED10; LED11 ... LED15) are on one bridge branch of a bridge rectifier formed by diodes (D1 ... D4) and the other bridge branch is supplied with the supply voltage , where resistors (R1 ... R3) are connected in series to the LED group, depending on the supply voltage. Anzeigeelement nach Anspruch 9,
dadurch gekennzeichnet,
dass Leuchtdioden (LED1 ... LED15) vorgesehen sind, die Licht mit der Wellenlänge von 590 nm aussenden.Display element according to claim 9,
characterized,
that light emitting diodes (LED1 ... LED15) are provided that emit light with a wavelength of 590 nm. Anzeigeelement nach Anspruch 9,
dadurch gekennzeichnet,
dass Leuchtdioden (LED1 ... LED15) vorgesehen sind, die von der Wellenlänge von 590 nm abweichendes Licht aussenden.Display element according to claim 9,
characterized,
that light-emitting diodes (LED1 ... LED15) are provided which emit light deviating from the wavelength of 590 nm.
EP94100774A 1993-02-04 1994-01-20 Display element for elevators Expired - Lifetime EP0609710B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1375793A 1993-02-04 1993-02-04
US13757 1993-02-04

Publications (2)

Publication Number Publication Date
EP0609710A1 true EP0609710A1 (en) 1994-08-10
EP0609710B1 EP0609710B1 (en) 1997-07-09

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EP94100774A Expired - Lifetime EP0609710B1 (en) 1993-02-04 1994-01-20 Display element for elevators

Country Status (10)

Country Link
US (1) US5433295A (en)
EP (1) EP0609710B1 (en)
JP (1) JPH06247648A (en)
KR (1) KR940019586A (en)
CN (1) CN1093057A (en)
AT (1) ATE155114T1 (en)
BR (1) BR9400423A (en)
CA (1) CA2114397A1 (en)
DE (1) DE59403265D1 (en)
ES (1) ES2106375T3 (en)

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Also Published As

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US5433295A (en) 1995-07-18
KR940019586A (en) 1994-09-14
CA2114397A1 (en) 1994-08-05
EP0609710B1 (en) 1997-07-09
ES2106375T3 (en) 1997-11-01
ATE155114T1 (en) 1997-07-15
BR9400423A (en) 1994-08-23
CN1093057A (en) 1994-10-05
JPH06247648A (en) 1994-09-06
DE59403265D1 (en) 1997-08-14

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