EP0609710B1 - Elément d'affichage pour ascenseurs - Google Patents

Elément d'affichage pour ascenseurs Download PDF

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Publication number
EP0609710B1
EP0609710B1 EP94100774A EP94100774A EP0609710B1 EP 0609710 B1 EP0609710 B1 EP 0609710B1 EP 94100774 A EP94100774 A EP 94100774A EP 94100774 A EP94100774 A EP 94100774A EP 0609710 B1 EP0609710 B1 EP 0609710B1
Authority
EP
European Patent Office
Prior art keywords
light
display element
element according
lens
emitting diodes
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
EP94100774A
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German (de)
English (en)
Other versions
EP0609710A1 (fr
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
Original Assignee
Inventio AG
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Filing date
Publication date
Application filed by Inventio AG filed Critical Inventio AG
Publication of EP0609710A1 publication Critical patent/EP0609710A1/fr
Application granted granted Critical
Publication of EP0609710B1 publication Critical patent/EP0609710B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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, means being provided for directing the light-emitting diode light onto a light diffuser, which, depending on the light emitting diode, is to be represented Icon forwards to the lens.
  • a display element has become known from EP 0 524 428, 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.
  • a push button with a cylindrical display element which has a printed circuit with circularly arranged light-emitting diodes at one end and is closed at the other end by means of a light ring element carrying a button cover.
  • the light-emitting diodes protrude into conically shaped chambers of the display element which are bevelled on the axis and which serve to guide the light to a light ring part of the light ring element.
  • the surfaces of the chamfered chambers are matted for the purpose of diffusion of the diode light.
  • a disadvantage of this display element is the complicated chamber structure inside the light ring element.
  • the production of such elements is only worthwhile for very large quantities due to cost reasons.
  • the transition of the LED light on the walls of the chamfered chambers is not optimal.
  • 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 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.

Landscapes

  • 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)
  • Road Signs Or Road Markings (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Push-Button Switches (AREA)

Claims (10)

  1. Elément d'affichage pour ascenseurs, comportant des diodes électroluminescentes (LED1...LED15) qui sont disposées sur un circuit imprimé (7) et dont la lumière représente, grâce à une lentille (2), une information importante pour le passager sous la forme de symboles, étant précisé qu'il est prévu des moyens pour guider la lumière des diodes électroluminescentes vers un diffuseur de lumière (4) qui transmet cette lumière à la lentille (2) en fonction du symbole à représenter,
       caractérisé en ce qu'il est prévu, pour guider la lumière, un revêtement blanc sur le côté du circuit imprimé (7) qui porte les diodes électroluminescentes et sur les parois latérales du diffuseur de lumière (4).
  2. Elément d'affichage selon la revendication 1, caractérisé en ce que le diffuseur de lumière (4) se compose de polycarbonates translucides de nuance blanche.
  3. Elément d'affichage selon la revendication 1, caractérisé en ce qu'il est prévu, pour guider la lumière, un réflecteur de lumière (10) dans lequel pénètrent les diodes électroluminescentes (LED1...LED15) et qui transmet la lumière de celles-ci au diffuseur de lumière (4).
  4. Elément d'affichage selon la revendication 3, caractérisé en ce que le réflecteur de lumière (10) se compose de polycarbonates blancs.
  5. Elément d'affichage selon la revendication 3, caractérisé en ce que le réflecteur de lumière (10) se compose d'un métal à revêtement blanc.
  6. Elément d'affichage selon l'une des revendications précédentes, caractérisé en ce que le réflecteur de lumière (10), le diffuseur de lumière (4) et la lentille (2) sont réalisés selon une construction plate.
  7. Elément d'affichage selon l'une des revendications précédentes, caractérisé en ce que le circuit imprimé (7), le réflecteur de lumière (10), le diffuseur de lumière (4) et la lentille (2) sont retenus par des tiges porteuses (8) disposées sur une plaque de recouvrement (1).
  8. Elément d'affichage selon l'une des revendications précédentes, caractérisé en ce qu'au moins un groupe de diodes électroluminescentes (LED1...LED5 ; LED6...LED10 ; LED11...LED15) se trouve sur une première branche d'un redresseur en pont formé par des diodes (D1...D4), tandis que l'autre branche est sollicitée par la tension d'alimentation, des résistances (R1...R3) étant montées en série par rapport au groupe de diodes électroluminescentes en fonction de la tension d'alimentation.
  9. Elément d'affichage selon la revendication 8, caractérisé en ce qu'il est prévu des diodes électroluminescentes (LED1...LED15) qui émettent la lumière présentant une longueur d'onde de 590 nm.
  10. Elément d'affichage selon la revendication 9, caractérisé en ce qu'il est prévu des diodes électroluminescentes (LED1...LED15) qui émettent la lumière présentant une longueur d'onde différente de 590 nm.
EP94100774A 1993-02-04 1994-01-20 Elément d'affichage pour ascenseurs Expired - Lifetime EP0609710B1 (fr)

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 EP0609710A1 (fr) 1994-08-10
EP0609710B1 true EP0609710B1 (fr) 1997-07-09

Family

ID=21761601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100774A Expired - Lifetime EP0609710B1 (fr) 1993-02-04 1994-01-20 Elément d'affichage pour ascenseurs

Country Status (10)

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

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US5889241A (en) * 1997-06-10 1999-03-30 Inventio Ag Indicating device for elevators
US6661521B1 (en) * 1998-09-11 2003-12-09 Robotic Vision Systems, Inc. Diffuse surface illumination apparatus and methods
US7244965B2 (en) 2002-09-04 2007-07-17 Cree Inc, Power surface mount light emitting die package
US7775685B2 (en) * 2003-05-27 2010-08-17 Cree, Inc. Power surface mount light emitting die package
US7218306B2 (en) * 2002-12-03 2007-05-15 Valmark Industries, Inc. Display device
GB2397943B (en) * 2003-01-18 2006-04-05 Alan Broadbent High output energy efficient LED lamp
TWI282773B (en) * 2003-10-31 2007-06-21 Toshiba Elevator Kk Lighting apparatus of elevator
KR100655894B1 (ko) * 2004-05-06 2006-12-08 서울옵토디바이스주식회사 색온도 및 연색성이 우수한 파장변환 발광장치
KR100658700B1 (ko) 2004-05-13 2006-12-15 서울옵토디바이스주식회사 Ｒｇｂ 발광소자와 형광체를 조합한 발광장치
KR100665299B1 (ko) * 2004-06-10 2007-01-04 서울반도체 주식회사 발광물질
KR100665298B1 (ko) * 2004-06-10 2007-01-04 서울반도체 주식회사 발광장치
US8308980B2 (en) * 2004-06-10 2012-11-13 Seoul Semiconductor Co., Ltd. Light emitting device
CN100516631C (zh) * 2004-09-27 2009-07-22 陈仕群 Led灯
KR101138944B1 (ko) * 2005-01-26 2012-04-25 서울옵토디바이스주식회사 직렬 연결된 복수개의 발광셀들을 갖는 발광 소자 및그것을 제조하는 방법
US7980743B2 (en) * 2005-06-14 2011-07-19 Cree, Inc. LED backlighting for displays
US20060292747A1 (en) * 2005-06-27 2006-12-28 Loh Ban P Top-surface-mount power light emitter with integral heat sink
KR101258397B1 (ko) * 2005-11-11 2013-04-30 서울반도체 주식회사 구리 알칼리토 실리케이트 혼성 결정 형광체
KR101055772B1 (ko) * 2005-12-15 2011-08-11 서울반도체 주식회사 발광장치
KR100875443B1 (ko) * 2006-03-31 2008-12-23 서울반도체 주식회사 발광 장치
KR101258227B1 (ko) 2006-08-29 2013-04-25 서울반도체 주식회사 발광 소자
CN101784636B (zh) * 2007-08-22 2013-06-12 首尔半导体株式会社 非化学计量四方铜碱土硅酸盐磷光体及其制备方法
KR101055769B1 (ko) * 2007-08-28 2011-08-11 서울반도체 주식회사 비화학양론적 정방정계 알칼리 토류 실리케이트 형광체를채택한 발광 장치
US7845829B2 (en) * 2008-05-20 2010-12-07 Abl Ip Holding Llc Enclosures for LED circuit boards
DE102009030205A1 (de) * 2009-06-24 2010-12-30 Litec-Lp Gmbh Leuchtstoffe mit Eu(II)-dotierten silikatischen Luminophore
KR101055762B1 (ko) * 2009-09-01 2011-08-11 서울반도체 주식회사 옥시오소실리케이트 발광체를 갖는 발광 물질을 채택한 발광 장치
KR101116037B1 (ko) * 2009-10-14 2012-02-22 장귀경 발광장치를 갖춘 엘리베이터 홀 재료분리대
US20130099687A1 (en) * 2011-10-24 2013-04-25 Marcus Zhang Ac led drive circuit
US9315362B2 (en) 2013-01-30 2016-04-19 Thyssenkrupp Elevator Corporation Snap-fit elevator lanterns
CN103982806A (zh) * 2014-06-06 2014-08-13 广州南艺灯光音响实业有限公司 一种多面反射led混色光路装置
KR20160096318A (ko) * 2015-02-05 2016-08-16 현대자동차주식회사 전기자동차의 충전 인디케이터
US9914239B2 (en) 2015-03-12 2018-03-13 Robert Bosch Tool Corporation User interface system in a table saw

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Also Published As

Publication number Publication date
ATE155114T1 (de) 1997-07-15
CN1093057A (zh) 1994-10-05
CA2114397A1 (fr) 1994-08-05
BR9400423A (pt) 1994-08-23
US5433295A (en) 1995-07-18
KR940019586A (ko) 1994-09-14
ES2106375T3 (es) 1997-11-01
EP0609710A1 (fr) 1994-08-10
JPH06247648A (ja) 1994-09-06
DE59403265D1 (de) 1997-08-14

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