EP1255948A1 - Leuchtdiodenanordnung mit reflektor - Google Patents
Leuchtdiodenanordnung mit reflektorInfo
- Publication number
- EP1255948A1 EP1255948A1 EP01925323A EP01925323A EP1255948A1 EP 1255948 A1 EP1255948 A1 EP 1255948A1 EP 01925323 A EP01925323 A EP 01925323A EP 01925323 A EP01925323 A EP 01925323A EP 1255948 A1 EP1255948 A1 EP 1255948A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- light
- light source
- opening
- 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.)
- Granted
Links
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
- 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
- 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
- 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 lamp according to the preamble of claim 1.
- a generic lamp is known for example from Japanese laid-open publication JP 11-17229.
- This describes a lighting arrangement in which a single light-emitting diode is arranged within a reflector, so that the light emitted by this light-emitting diode is used for indirect lighting.
- the arrangement of the light source within a reflector has the advantage that the light emitted by the light-emitting diode in a relatively large solid angle is collected and reflected by the reflector and thus, in comparison to direct illumination by the light-emitting diode, a significantly larger amount of light for the lighting purposes can be used.
- Such lighting arrangements can be used in optoelectronic components and other display devices because of the very good controllability of the light source.
- the lighting arrangement described in JP 11-17229 is, however, limited with regard to its possible uses, since the amount of light emitted by the individual diode is not very high and is therefore not sufficient for a number of lighting purposes.
- the present invention is therefore based on the object of improving the lighting arrangement known from JP 11-7229 in such a way that it is suitable for a large number of possible uses.
- a lamp 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 essentially in the longitudinal axis of a - seen from the light source - concave reflector, so that a large part of the light emitted by the light emitting diodes can be used for the desired lighting purpose.
- the ratio between the size of the support surface and the opening of the reflector is between 1: 3 and 1:20.
- the total amount of light is significantly higher than that of a single light-emitting diode.
- the specified size ratio between the support surface and the reflector is found to be advantageous, since on the one hand sufficiently high luminosities can be achieved in this size range, but on the other hand no shadow casts occur in the light emitted by the reflector due to the support surface arranged in front of or within the reflector.
- the ratio between the support surface and the opening of the reflector is preferably 1:10.
- the aforementioned advantage that light-emitting diodes have very good controllability can also be used by arranging light-emitting diodes of different colors together on the support surface.
- blue light-emitting diodes can also be produced with a relatively high degree of efficiency, so that any desired color tones can be achieved by a suitable combination of these three colors or by correspondingly controlling the light-emitting diodes arranged on the carrier surface.
- the lamp according to the invention can be used for a variety of applications.
- a practical embodiment of the invention can therefore consist in that a heat sink is arranged on the back of the carrier surface - that is to say the side opposite the light-emitting diodes - which radiates the generated heat as effectively as possible. Since the weight of the light source is relatively low, the power or control lines for the light-emitting diodes can preferably be used directly to hold the light source. These can span the reflector in the manner of a diameter, for example, so that the light source is arranged essentially in the plane of the reflector opening.
- the power or control lines used for the holder extend from the inside of the reflector or the center of the reflector in the direction of the reflector opening, so that the distance of the light source from the reflector can be selected.
- the light source is particularly advantageously in a focal point of the reflector, since this arrangement ensures maximum utilization of the emitted light.
- Figure 1 shows a lamp according to the invention in a perspective view.
- 2 shows a more detailed embodiment of the light source according to the invention.
- 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 control of the individual light-emitting diodes takes place via current and control lines 5, which span the reflector in diameter from one edge of the reflector opening to the other and at the same time serve as a holder for the light source 2.
- a particularly advantageous embodiment consists in that the light source 2 is arranged in the focal point of the reflector 1, so that the entire light emitted by the light-emitting diodes in an angular range of 180 ° can be used for the intended lighting purpose.
- FIG. 2 shows an enlarged illustration of the light source 2 according to the invention.
- a multiplicity of light-emitting diode chips (dice) 4 are arranged on a carrier surface 3. These can emit light in different colors, so that different colors can be achieved with a suitable control of the light emitting diodes 4 for the light emitted by the lamp as a whole.
- a heat sink 6 is arranged to increase the heat radiation. This will create a
- Connection lines 5 serve both the power supply and the transmission of
- Control signals for the targeted control of the different light-emitting diodes 4 to achieve the desired color are provided.
- the luminaire Due to the compact arrangement of the light-emitting diode chips, a considerable luminosity can be achieved, so that the luminaire is also suitable for applications in which higher luminosities are required. At the same time, however, the light emitted by the reflector 1 is intended to achieve homogeneous illumination.
- the size ratio according to the invention between the support surface 3 and the reflector 1 ensures that the light source 2 itself does not cause shadows.
- the inside of the reflector is that of the Light emitting diodes 4 diffusely reflected light, which also supports mixing of the different colors.
- the holder shown in Fig. 3a corresponds to the lamp shown in Fig. 1.
- FIG. 3b An alternative type of suspension is shown in Fig. 3b, in which the power and control lines 5 extend obliquely downwards 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, can also be arranged further inside the reflector 1 or even protruding.
- the third holder shown in FIG. 3c in which the light source 2 is formed by a rod-shaped holder 5 which extends from the center of the reflector along the longitudinal axis of the reflector 1 and which can likewise contain the power and control lines.
- the distance between the light source 2 and the reflector 1 is adjustable, so that the light cone generated by the reflector 1 can be changed by moving it along the longitudinal axis.
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)
Abstract
Description
Claims
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 (de) | 2000-02-14 | 2001-01-29 | Leuchtdiodenanordnung mit reflektor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1255948A1 true EP1255948A1 (de) | 2002-11-13 |
EP1255948B1 EP1255948B1 (de) | 2008-03-12 |
Family
ID=7937254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01925323A Expired - Lifetime EP1255948B1 (de) | 2000-02-14 | 2001-01-29 | Leuchtdiodenanordnung mit reflektor |
Country Status (6)
Country | Link |
---|---|
US (1) | US6857763B2 (de) |
EP (1) | EP1255948B1 (de) |
AT (1) | ATE389143T1 (de) |
AU (1) | AU2001252121A1 (de) |
DE (2) | DE20002565U1 (de) |
WO (1) | WO2001059359A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3199870A3 (de) * | 2016-01-27 | 2017-11-08 | ELPRO Lichttechnik GmbH | Elektrische leuchte |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US7857496B2 (en) | 2004-03-05 | 2010-12-28 | Osram Gesellschaft mit beschränkter Haftung | Lamp |
US7712948B2 (en) | 2005-02-02 | 2010-05-11 | Koninklijke Philips Electronics N.V. | Light-source module and holder therefor |
WO2007022314A2 (en) * | 2005-08-17 | 2007-02-22 | Illumination Management Solutions, Inc. | An improved optic for leds and other light sources |
CN101101090A (zh) * | 2006-07-07 | 2008-01-09 | 启萌科技有限公司 | 照明装置 |
EP1985912B1 (de) * | 2007-04-26 | 2017-06-07 | Frowein EZH GmbH | Operationsleuchte |
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 |
JP3166727U (ja) * | 2008-03-13 | 2011-03-24 | ▲きん▼源盛科技股▲ふん▼有限公司 | 半導体固体化照明器具 |
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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0570987A1 (de) * | 1992-05-20 | 1993-11-24 | Heinz-Günther Franz | Fahrrad-Rückleuchte |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4360860A (en) * | 1977-03-07 | 1982-11-23 | Johnson Hugh G | Self-contained hand held portable lantern-flashlight consisting of a manually operated generator and rechargeable batteries |
DE3434410A1 (de) * | 1984-09-19 | 1986-03-27 | Ingo 8000 München Maurer | Elektrische haengelampe |
JPH01117229A (ja) | 1988-09-17 | 1989-05-10 | Fuji Electric Co Ltd | 回路しゃ断器用組み込みスイッチ |
DE3835942A1 (de) * | 1988-10-21 | 1990-04-26 | Telefunken Electronic Gmbh | Flaechenhafter strahler |
DE4137208A1 (de) * | 1991-11-12 | 1993-05-13 | Swarovski & Co | Beleuchtungskoerper |
US5782553A (en) * | 1993-10-28 | 1998-07-21 | Mcdermott; Kevin | Multiple lamp lighting device |
JPH0846244A (ja) * | 1994-07-29 | 1996-02-16 | Victor Co Of Japan Ltd | 発光装置 |
US5561346A (en) * | 1994-08-10 | 1996-10-01 | Byrne; David J. | LED lamp construction |
US5697584A (en) * | 1995-07-27 | 1997-12-16 | Union Switch & Signal Inc. | Railroad searchlight signal with solid state illuminant and aspect indication |
DE19615388A1 (de) * | 1996-04-18 | 1997-10-23 | Zumtobel Licht | Leuchte mit einer insbesondere kleinvolumigen Lampe |
DE19620209A1 (de) * | 1996-05-20 | 1997-11-27 | Zumtobel Licht | Leuchte mit einem profilierten Basiskörper als Träger für wenigstens eine Lampe |
US6441943B1 (en) * | 1997-04-02 | 2002-08-27 | Gentex Corporation | Indicators and illuminators using a semiconductor radiation emitter package |
JPH1117229A (ja) | 1997-06-27 | 1999-01-22 | Iwasaki Electric Co Ltd | 反射型発光ダイオード及びその実装方法 |
US6019493A (en) * | 1998-03-13 | 2000-02-01 | Kuo; Jeffrey | High efficiency light for use in a traffic signal light, using LED's |
DE19837224A1 (de) * | 1998-08-17 | 2000-03-09 | Siemens Ag | Leuchteinrichtung für die Signalabgabe auf sowie die Kennzeichnung und Markierung von Verkehrsflächen |
DE29913930U1 (de) * | 1999-08-13 | 1999-11-18 | Strobl, Thomas, 82541 Münsing | Mobile Leuchte |
DE29919817U1 (de) * | 1999-11-11 | 2000-01-05 | Hella Kg Hueck & Co, 59557 Lippstadt | Kraftfahrzeugleuchte |
-
2000
- 2000-02-14 DE DE20002565U patent/DE20002565U1/de not_active Expired - Lifetime
-
2001
- 2001-01-29 EP EP01925323A patent/EP1255948B1/de not_active Expired - Lifetime
- 2001-01-29 AU AU2001252121A patent/AU2001252121A1/en not_active Abandoned
- 2001-01-29 AT AT01925323T patent/ATE389143T1/de active
- 2001-01-29 DE DE50113726T patent/DE50113726D1/de not_active Expired - Lifetime
- 2001-01-29 WO PCT/EP2001/000934 patent/WO2001059359A1/de active IP Right Grant
-
2002
- 2002-08-14 US US10/217,446 patent/US6857763B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0570987A1 (de) * | 1992-05-20 | 1993-11-24 | Heinz-Günther Franz | Fahrrad-Rückleuchte |
Non-Patent Citations (1)
Title |
---|
See also references of WO0159359A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3199870A3 (de) * | 2016-01-27 | 2017-11-08 | ELPRO Lichttechnik GmbH | Elektrische leuchte |
Also Published As
Publication number | Publication date |
---|---|
DE20002565U1 (de) | 2001-06-28 |
DE50113726D1 (de) | 2008-04-24 |
US6857763B2 (en) | 2005-02-22 |
EP1255948B1 (de) | 2008-03-12 |
WO2001059359A1 (de) | 2001-08-16 |
US20020191398A1 (en) | 2002-12-19 |
ATE389143T1 (de) | 2008-03-15 |
AU2001252121A1 (en) | 2001-08-20 |
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