EP1255948B1 - Ensemble diode electroluminescente dote d'un reflecteur - Google Patents

Ensemble diode electroluminescente dote d'un reflecteur Download PDF

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Publication number
EP1255948B1
EP1255948B1 EP01925323A EP01925323A EP1255948B1 EP 1255948 B1 EP1255948 B1 EP 1255948B1 EP 01925323 A EP01925323 A EP 01925323A EP 01925323 A EP01925323 A EP 01925323A EP 1255948 B1 EP1255948 B1 EP 1255948B1
Authority
EP
European Patent Office
Prior art keywords
reflector
light source
light
luminaire according
opening
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
EP01925323A
Other languages
German (de)
English (en)
Other versions
EP1255948A1 (fr
Inventor
Katharina Keller
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.)
ZUMTOBEL LIGHTING GmbH
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP1255948A1 publication Critical patent/EP1255948A1/fr
Application granted granted Critical
Publication of EP1255948B1 publication Critical patent/EP1255948B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode

Definitions

  • the present invention relates to a luminaire according to the preamble of claim 1.
  • a generic lamp is for example from the Japanese Patent Laid-Open Publication No. 11-17220 known.
  • the arrangement of the light source within a reflector therefore has the advantage that the light radiated by the light emitting diode in a relatively large solid angle is captured and reflected by the reflector and thus in comparison to a direct illumination by the light emitting diode a much larger amount of light for the lighting purposes can be recycled.
  • Such lighting arrangements can be used because of the very good controllability of the light source in optoelectronic components and other display devices.
  • the in the JP 11-17229 the lighting arrangement described is limited in terms of their applications, since the amount of light emitted by the individual diode is not very high and therefore not sufficient for a number of lighting purposes.
  • the EP 0 570 987 A1 discloses a luminaire with a designed as an LED semiconductor chip light source, which is arranged substantially in the foot region of a pot-shaped reflector. This light source emits its light primarily in the light emission direction of the luminaire and only a small part of the emitted light is reflected by the reflector walls. Therefore, when looking at the luminaire, the light source appears as a bright spot.
  • the present invention is based on the object, from the JP 11-17229 to improve known lighting arrangement in that it is suitable for a variety of applications.
  • a luminaire which has the features of claim 1.
  • a carrier surface is used as the light source, on which a plurality of light-emitting diodes are arranged.
  • This light source is arranged substantially in the longitudinal axis of a - viewed from the light source - concave reflector, so that the light emitted by the light emitting diode in the opposite direction to the main beam direction of the reflector.
  • the ratio between the size of the support surface and the opening of the reflector is between 1: 3 and 1:20.
  • the use of a plurality of light-emitting diodes initially has the consequence that the total amount of light is significantly higher than that of a single light-emitting diode. Furthermore, it is possible to regulate the light source in terms of their overall luminosity in a much larger area but still very accurate and set different brightness levels. At the same time has become
  • the specified size ratio between the support surface and the reflector is found to be advantageous, since in this size range, on the one hand sufficiently high luminous intensities can be achieved, but on the other hand caused by the arranged in front of or within the reflector support surface no shadow throws in the light emitted by the reflector light.
  • the ratio between the support surface and the opening of the reflector is 1:10.
  • the aforementioned advantage that light-emitting diodes have a very good controllability, can also be used by the fact that LEDs of different colors are arranged together on the support surface.
  • LEDs of different colors are arranged together on the support surface.
  • red and green and blue light emitting diodes can be made with a relatively high efficiency, so that any color tones can be achieved by a suitable combination of these three colors or by a corresponding control of the light emitting diodes arranged on the support surface.
  • the luminaire according to the invention can be used for a variety of applications.
  • the very compact arrangement of the light-emitting semiconductor on the substrate can result in that a relatively high heat output is generated.
  • a practical embodiment of the invention can therefore be that on the back of the support surface - that is, the side opposite the light emitting diodes - a heat sink is arranged, which radiates the generated heat output as effectively as possible. Since the weight of the light source is relatively low, the current or control lines for the light-emitting diodes for holding the light source can preferably be used directly. These can, for example, span the reflector in diameter, so that the light source is arranged substantially in the plane of the reflector opening.
  • a further possibility can also consist in that the current or control lines used for the holder extend from the reflector inner side or the reflector center in the direction of the reflector opening, so that the distance of the light source from the reflector can be selected.
  • the light source in a focal point of the reflector since this arrangement ensures maximum utilization of the emitted light.
  • Fig. 1 shows a very general embodiment of a lamp according to the invention.
  • An essential element of this lamp is a dome-shaped or concave reflector 1 whose inner walls are highly reflective.
  • a light source 2 is arranged, which consists of a plurality of light emitting diodes arranged on a support surface.
  • the power supply and the driving of the individual light-emitting diodes via power and control lines 5, which span the reflector diameter of one edge of the reflector opening to the other and at the same time serve as a holder for the light source 2.
  • the light source 2 is arranged in the focal point of the reflector 1, so that the entire in an angular range of 180 ° upwardly radiated light of the LEDs can be used for the intended lighting purpose.
  • Fig. 2 shows an enlarged view of the light source 2 according to the invention on a support surface 3 while a plurality of light-emitting diode chips (dice) 4 are arranged. These can emit light in different colors, so that with a suitable control of the light-emitting diodes 4 for the light emitted by the light total different shades can be achieved.
  • a heat sink 6 is arranged to increase the heat radiation. As a result, overheating of the entire light source 2 and thus an impairment of the Wrkungsgrads or even damage to the LEDs 4 is avoided.
  • the two leads 5 serve both the power supply and the transmission of control signals for selectively driving the different LEDs 4 to achieve the desired hue.
  • the lamp Due to the compact arrangement of the light-emitting diode chips, a considerable luminosity can be achieved, so that the lamp is also suitable for applications in which higher luminous intensities are required. At the same time, however, homogeneous illumination should be achieved by the light emitted by the reflector 1.
  • the size ratio specified according to the invention between the support surface 3 and the reflector 1 ensures that the light source 2 does not cause any shadow itself.
  • the inside of the reflector matches that of the Light emitting diodes 4 emitted light diffusely reflected, which also supports a mixing of the different shades.
  • FIGS. 3a to 3c now different mounting options for the light source 2 are explained within the dome-like reflector 1.
  • bracket corresponds to the in Fig. 1 illustrated light.
  • the light source 2 serve the current or control lines 5, which span over the edge of the reflector 1 of these diameter-like, the light source 2 is located exactly in the middle and thus in the longitudinal axis of the reflector 1.
  • Fig. 3b An alternative suspension type is in Fig. 3b shown, in which the current and control lines 5 extend obliquely downward from the inside of the reflector, which has the advantage that the light source 2 does not necessarily have to be arranged in the plane of the reflector opening, but for example also further within the reflector 1 or even can be arranged protruding.
  • Fig. 3c shown holder in which the light source 2 is formed by a extending from the reflector center along the longitudinal axis of the reflector 1 extending rod-shaped holder 5, which may also include the power and control lines.
  • the light source 2 is adjustable in its distance from the reflector 1, so that by changing along the longitudinal axis of the light cone generated by the reflector 1 can be changed.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (9)

  1. Lampe avec une source lumineuse (2) qui comporte au moins un semi-conducteur émetteur de lumière, et avec un réflecteur (1) concave - vu à partir de la source lumineuse -, la source lumineuse étant agencée sensiblement dans l'axe longitudinal du réflecteur et émettant la lumière dans la direction opposée à la direction de rayonnement principal du réflecteur,
    caractérisée en ce que la source lumineuse (2) est formée par une pluralité de pastilles de diodes électroluminescentes (4), agencées sur une surface de support (3) et aptes à être commandées, et en ce que le rapport entre la surface de support (3) et l'ouverture du réflecteur (1) se situe entre 1 : 3 et 1 : 20, un corps de refroidissement étant disposé sur la face inférieure de la surface de support.
  2. Lampe selon la revendication 1, caractérisée en ce que le rapport entre la surface de support (3) et l'ouverture du réflecteur (1) est égal à 1 : 10.
  3. Lampe selon la revendication 1 ou 2, caractérisée en ce que les diodes électroluminescentes (4) émettent la lumière dans différentes couleurs.
  4. Lampe selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la source lumineuse (2) est maintenue par des lignes de courant ou lignes de commande (5).
  5. Lampe selon la revendication 4, caractérisée en ce que les lignes de courant ou lignes de commande (5) sont tendues sur l'ouverture du réflecteur.
  6. Lampe selon la revendication 4, caractérisée en ce que les lignes de courant ou lignes de commande (5) s'étendent depuis le côté intérieur du réflecteur ou le centre du réflecteur vers l'ouverture du réflecteur.
  7. Lampe selon la revendication 6, caractérisée en ce que la source lumineuse (2) est réglable dans sa distance par rapport au réflecteur (1).
  8. Lampe selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la source lumineuse (2) est agencée dans un foyer du réflecteur (1).
  9. Lampe selon l'une quelconque des revendications précédentes, caractérisée en ce que la face intérieure du réflecteur (1) est une face à réflexion diffuse.
EP01925323A 2000-02-14 2001-01-29 Ensemble diode electroluminescente dote d'un reflecteur Expired - Lifetime EP1255948B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20002565U DE20002565U1 (de) 2000-02-14 2000-02-14 Leuchtdiodenanordnung mit Reflektor
DE20002565U 2000-02-14
PCT/EP2001/000934 WO2001059359A1 (fr) 2000-02-14 2001-01-29 Ensemble diode electroluminescente dote d'un reflecteur

Publications (2)

Publication Number Publication Date
EP1255948A1 EP1255948A1 (fr) 2002-11-13
EP1255948B1 true EP1255948B1 (fr) 2008-03-12

Family

ID=7937254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01925323A Expired - Lifetime EP1255948B1 (fr) 2000-02-14 2001-01-29 Ensemble diode electroluminescente dote d'un reflecteur

Country Status (6)

Country Link
US (1) US6857763B2 (fr)
EP (1) EP1255948B1 (fr)
AT (1) ATE389143T1 (fr)
AU (1) AU2001252121A1 (fr)
DE (2) DE20002565U1 (fr)
WO (1) WO2001059359A1 (fr)

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DE10105622A1 (de) * 2001-02-08 2002-08-14 Insta Elektro Gmbh Beleuchtungseinrichtung
DE10109997A1 (de) * 2001-03-01 2002-09-05 Diemer & Fastenrath Gmbh & Co Leseleuchte für ein Fahrzeug, insbesondere für ein Kraftfahrzeug
DE10311853B4 (de) * 2003-03-17 2005-03-24 Daimlerchrysler Ag Scheinwerfer für ein Fahrzeug
EP2270384A3 (fr) * 2004-03-05 2011-02-16 OSRAM Gesellschaft mit beschränkter Haftung Lampe
WO2006082537A1 (fr) 2005-02-02 2006-08-10 Philips Intellectual Property & Standards Gmbh Module source lumineuse et support a cet effet
WO2007022314A2 (fr) * 2005-08-17 2007-02-22 Illumination Management Solutions, Inc. Element optique perfectionne destine a des led et a d'autres sources lumineuses
CN101101090A (zh) * 2006-07-07 2008-01-09 启萌科技有限公司 照明装置
EP1985912B1 (fr) * 2007-04-26 2017-06-07 Frowein EZH GmbH Lampe chirurgicale
DE102007030186B4 (de) * 2007-06-27 2009-04-23 Harald Hofmann Lineare LED-Lampe und Leuchtensystem mit derselben
TW200925513A (en) * 2007-12-11 2009-06-16 Prodisc Technology Inc LED lamp structure for reducing multiple shadows
DE212008000105U1 (de) * 2008-03-13 2010-11-04 Thermoking Technology International Co., Sinjhuang City Halbleiter-Festkörper-Beleuchtungseinrichtung
DE102008031987A1 (de) 2008-07-07 2010-04-15 Osram Gesellschaft mit beschränkter Haftung Leuchtvorrichtung
US7824068B2 (en) * 2008-11-28 2010-11-02 Wulfinghoff Donald R Lighting fixtures and systems with high energy efficiency and visual quality
US8568000B2 (en) * 2011-08-29 2013-10-29 Tai-Her Yang Annular-arranged lamp capable of backward projecting by concave sphere
DE102012020931B4 (de) 2012-10-25 2022-10-20 Rüdiger Lanz Hochleistungsscheinwerfer mit Hochleistungs-LED-Leuchtmittel
CN103062684A (zh) * 2013-01-07 2013-04-24 威海大荣新能源开发有限公司 一种用于教学场所的荧光灯具
DE202016100354U1 (de) * 2016-01-27 2017-05-02 Elpro Lichttechnik Gmbh Elektrische Leuchte

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Also Published As

Publication number Publication date
ATE389143T1 (de) 2008-03-15
DE50113726D1 (de) 2008-04-24
AU2001252121A1 (en) 2001-08-20
US20020191398A1 (en) 2002-12-19
WO2001059359A1 (fr) 2001-08-16
EP1255948A1 (fr) 2002-11-13
DE20002565U1 (de) 2001-06-28
US6857763B2 (en) 2005-02-22

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