EP2501987B1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
EP2501987B1
EP2501987B1 EP11701835.8A EP11701835A EP2501987B1 EP 2501987 B1 EP2501987 B1 EP 2501987B1 EP 11701835 A EP11701835 A EP 11701835A EP 2501987 B1 EP2501987 B1 EP 2501987B1
Authority
EP
European Patent Office
Prior art keywords
lighting device
light sources
arrangements
arrangement
light
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.)
Active
Application number
EP11701835.8A
Other languages
German (de)
English (en)
Other versions
EP2501987A1 (fr
Inventor
Harald Dellian
Robert Kreutmayr
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.)
Osram GmbH
Original Assignee
Osram GmbH
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 Osram GmbH filed Critical Osram GmbH
Publication of EP2501987A1 publication Critical patent/EP2501987A1/fr
Application granted granted Critical
Publication of EP2501987B1 publication Critical patent/EP2501987B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/005—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also the light source
    • 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
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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]

Definitions

  • the invention relates to a lighting device comprising at least one device for current regulation, at least two arrangements of at least one monochrome light source, preferably at least one single-color light emitting diode, wherein the light sources of both arrangements have approximately the same, preferably white, light color.
  • Lighting devices often have light sources, such as light emitting diodes (LEDs), which require a constant operating current and are therefore provided with at least one current regulation device which adjusts the operating current for the light sources to a desired value.
  • LEDs light emitting diodes
  • the lighting device must have a plurality of light sources to achieve the desired illuminance, so that they can not all be connected in series without, for example, requiring an inadmissibly high operating voltage.
  • such a series connection is extremely susceptible to errors because the failure of a single light source is sufficient to put the whole lighting device out of operation.
  • the EP 2 065 632 A1 shows a lighting device with current control for different circuits with LEDs.
  • a lighting device comprising at least one device for current control, at least two arrangements of at least one monochrome light source, preferably at least one single-color LED, wherein the light sources of both arrangements have approximately the same, preferably white, light color to create that possible with little circuit complexity, loss as possible light of a light color from multiple light sources as homogeneous as possible, ie with approximately the same brightness and / or light color of the individual light sources to surrender.
  • Light sources, and in particular LEDs, which are not able to change their light color in a targeted manner are regarded as monochromatic.
  • At least one respective light source of an array of light sources with at least one light source of at least one other arrangement is thermally in operative connection, in particular thermally coupled, a temperature compensation between the light sources of the different arrangements.
  • thermally coupled in this case light sources are considered in which it is ensured by suitable means that a particularly good heat conduction between the light sources is made possible and thus a temperature difference can be compensated quickly.
  • suitable means may, for example, a direct connection of the light sources or a compound by means of a material of high thermal conductivity, in particular with a thermal conductivity of more than 25 W / mK, in particular more than 100 W / mK or another compound with a thermal conductivity of more than 25 W.
  • At least one arrangement of light sources comprises at least one series connection of light sources, in particular of light emitting diodes.
  • a series circuit the current through all elements of the circuit is the same, so that within the series homogeneous light emission is achieved.
  • a voltage can be applied to a series connection, which voltage is substantially higher than the operating voltage of the individual elements, so that, for example, a mains voltage must be reduced much less than, for example, in a parallel connection of the elements.
  • the failure of an arrangement affects less on the performance of the entire lighting device, on the other hand, with more than three arrangements in conventional LEDs a sufficient number of LEDs combined in one arrangement in order to achieve a sufficiently high illuminance without requiring excessively high values for the supply voltage.
  • the Lighting device has less than seven arrays of light sources. With a larger number of arrangements, it is difficult to achieve the thermal balance between the individual arrangements. In addition, the production costs, especially due to the large number of required lines, increases significantly.
  • At least one arrangement has a plurality of light sources, in particular more than five, preferably more than 10, particularly preferably more than 15 light sources. Furthermore, it is advantageous if at least one light source of another arrangement is arranged between at least two light sources of the same arrangement. As a result, a particularly good heat transfer between the light sources of different arrangements is achieved, since these are arranged adjacent to each other. It is also avoided that light sources of an arrangement are arranged adjacent to each other, thereby avoiding that areas of the lighting device only have light sources of an arrangement and thereby forming a substantially different temperature from other areas.
  • Adjacent in the context of this application apart from a direct spatial arrangement, also means that the light sources are thermally adjacent, ie that heat from a light source flows better to an adjacent light source than to a non-adjacent one. Furthermore, it is expedient if the light sources of the arrangements are arranged in the order of the arrangements. This means that, for example, in three arrangements, a light source of the first arrangement of a light source is adjacent to the second arrangement, which in turn is adjacent to the light source of the first arrangement of a light source of a third arrangement.
  • the light source of the third arrangement is in turn adjacent to a light source of the first arrangement, which may be the first light source, but this will preferably be a second light source of the first arrangement, with which this scheme No two light sources within an array are located adjacent.
  • a particularly good temperature distribution is achieved by avoiding that light sources of an arrangement are arranged next to one another.
  • only light sources of an arrangement are arranged in any area of the lighting device and it can form there from no other areas substantially different temperature.
  • At least one light source is arranged on at least one circuit carrier, as this allows a particularly simple structure can be achieved, in which a particularly simple contacting of the light sources can take place.
  • a particularly simple construction is achieved if all the light sources are arranged on the same circuit carrier.
  • At least one circuit carrier is designed as FR4 board, a particularly simple and inexpensive construction is achieved.
  • at least one circuit carrier is designed as a metal plate or as a metal core board.
  • Such boards facilitate the lateral heat transfer between the light sources and thus improve their thermal coupling.
  • at least one circuit carrier is arranged on at least one heat sink.
  • the heat sink is due to its good thermal conductivity of the thermal coupling between the thermally operatively connected to the heat sink light sources. It is expedient if the distance between the plurality of light sources, in particular all light sources, is the same. This allows a particularly homogeneous heat distribution can be achieved.
  • the light sources are arranged in a line.
  • a line-shaped arrangement represents a particularly simple arrangement, which is particularly suitable for a line-shaped lighting device.
  • FIG. 1 shows a schematic partial sectional view of a line-shaped lighting device 1.
  • the lighting device 1 is designed as a LED retrofit lamp 1 for a T8 fluorescent lamp and thus has a linear extension.
  • the geometric arrangement is chosen such that the light-emitting diodes L are arranged on a FR4 support 2 in a straight row, the FR support 2 being fastened on a continuous heat sink 3 in a suitable manner in order to ensure good heat transfer from the light-emitting diodes L. to allow the heat sink 3 and so produce a thermal coupling between the LEDs L.
  • the LED retrofit lamp 1 is finished with a diffusion element 4, which for the sake of clarity is cut open here.
  • the spacing of the LEDs L from each other is chosen so that the most homogeneous possible illumination of the diffusion element 4 and a good thermal coupling between the LEDs is achieved.
  • the LEDs L have the same distance from each other, wherein this is chosen not greater than the distance of the LEDs L from the diffusion element 4 for a homogeneous illumination of the diffusion element 4.
  • At the end faces 5 of the lighting device 1 T8 pin base 6 and on one side of a driver circuit 7 are arranged.
  • Fig. 2 shows a circuit diagram of the line-shaped lighting device 1.
  • the driver circuit 7 is provided as a device for current regulation and feeds a constant current I in the supply line 8 a.
  • the supply line 8 branches into four strands S1, S2, S3, S4 which each form an arrangement of light-emitting diodes L as light sources. Within the strands S1, S2, S3, S4, the light-emitting diodes L are connected in series.
  • the LEDs L are arranged according to the order of the strands S1, S2, S3, S4.
  • a light-emitting diode L11 of the strand S1 is followed by a light-emitting diode L21 of the strand S2 and on this a light-emitting diode L31 of the strand S3.
  • the LED L31 is followed by a LED L41 of the strand S4 and in turn a light-emitting diode L12 of the strand S1.
  • the heat sink 3 is made of aluminum in the present embodiment, but there are also all other skilled in the art for this known materials, such as copper, in question.
  • the skilled person will consider other board structures and materials instead of the FR4 board 2, such as metal core boards or even flexible boards that can be applied to a bent heat sink, for example. This is conceivable in particular for retrofit lamps which can be inserted into a screwed or bayonet mount instead of conventional incandescent lamps.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (13)

  1. Dispositif d'éclairage (1) comprenant au moins un dispositif (7) de régulation du courant, au moins deux agencements (S1, S2, S3, S4) constitués chacun d'au moins une source lumineuse (L) monochrome, de préférence d'au moins une diode électroluminescente (L), les sources lumineuses (L) des deux agencements présentant approximativement la même couleur de lumière, de préférence blanche, au moins une source lumineuse (L11) respective d'un agencement (S1) de sources lumineuses (L) étant en liaison fonctionnelle thermique, en particulier couplée thermiquement, avec au moins une source lumineuse (L21) d'au moins un autre agencement (S2), au moins un agencement (S1, S2, S3, S4) de sources lumineuses (L) comprenant au moins un montage en série de diodes électroluminescentes (L) et les agencements de sources lumineuses étant alimentés par un dispositif commun (7) de régulation de courant, lesdits agencements étant montés en parallèle, caractérisé en ce que les sources lumineuses (L) du dispositif d'éclairage (1) sont disposées de telle façon que deux sources lumineuses (L) du même agencement (S1, S2, S3, S4) ne sont pas contiguës l'une à l'autre, et les sources lumineuses sont disposées dans une grille régulière plane, en particulier une grille cubique ou hexagonale.
  2. Dispositif d'éclairage (1) selon la revendication 1, caractérisé en ce que le dispositif d'éclairage (1) comprend plus de trois agencements (S1, S2, S3, S4) de sources lumineuses (L).
  3. Dispositif d'éclairage (1) selon l'une des revendications 1 à 2, caractérisé en ce que le dispositif d'éclairage (1) comprend moins de sept agencements (S1, S2, S3, S4) de sources lumineuses (L).
  4. Dispositif d'éclairage (1) selon l'une des revendications 1 à 3, caractérisé en ce qu'au moins un agencement (S1, S2, S3, S4) est formé de sources lumineuses (L) montée en série.
  5. Dispositif d'éclairage (1) selon l'une des revendications 1 à 4, caractérisé en ce qu'au moins un agencement (S1, S2, S3, S4) comporte une pluralité de sources lumineuses (L), en particulier plus de cinq, de préférence plus de 10, et de préférence encore plus de 15 sources lumineuses (L).
  6. Dispositif d'éclairage (1) selon l'une des revendications 1 à 5, caractérisé en ce qu'entre au moins deux sources lumineuses (L) du même agencement (S1, S2, S3, S4) est intercalée au moins une source lumineuse (L) d'un autre agencement (S1, S2, S3, S4).
  7. Dispositif d'éclairage (1) selon l'une des revendications 1 à 6, caractérisé en ce que les sources lumineuses (L) des agencements (S1, S2, S3, S4) sont disposées dans l'ordre des agencements (S1, S2, S3, S4).
  8. Dispositif d'éclairage (1) selon l'une des revendications 1 à 7, caractérisé en ce que toutes les LED (L) à l'intérieur d'au moins un agencement (S1, S2, S3, S4), en particulier à l'intérieur de tous les agencements (S1, S2, S3, S4), sont issues d'un même lot de fabrication.
  9. Dispositif d'éclairage (1) selon l'une des revendications 1 à 8, caractérisé en ce qu'au moins deux agencements (S1, S2, S3, S4), de préférence tous les agencements (S1, S2, S3, S4) du dispositif d'éclairage (1) présentent le même nombre de sources lumineuses (L).
  10. Dispositif d'éclairage (1) selon l'une des revendications 1 à 9, caractérisé en ce qu'au moins une source lumineuse (L) est disposée sur au moins un support de circuit (2).
  11. Dispositif d'éclairage (1) selon l'une des revendications 1 à 10, caractérisé en ce qu'au moins un support de circuit (2) est disposé sur au moins un corps refroidisseur (3).
  12. Dispositif d'éclairage (1) selon l'une des revendications 1 à 11, caractérisé en ce que le dispositif d'éclairage (1) présente au moins un culot standard (6), en particulier un culot à broches (6).
  13. Dispositif d'éclairage (1) selon l'une des revendications 1 à 12, caractérisé en ce que le dispositif d'éclairage (1) est prévu en remplacement d'un tube fluorescent.
EP11701835.8A 2010-02-23 2011-02-03 Dispositif d'éclairage Active EP2501987B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010002228A DE102010002228A1 (de) 2010-02-23 2010-02-23 Beleuchtungsvorrichtung
PCT/EP2011/051607 WO2011104099A1 (fr) 2010-02-23 2011-02-03 Dispositif d'éclairage

Publications (2)

Publication Number Publication Date
EP2501987A1 EP2501987A1 (fr) 2012-09-26
EP2501987B1 true EP2501987B1 (fr) 2018-08-29

Family

ID=43798551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11701835.8A Active EP2501987B1 (fr) 2010-02-23 2011-02-03 Dispositif d'éclairage

Country Status (6)

Country Link
US (1) US20130058079A1 (fr)
EP (1) EP2501987B1 (fr)
KR (1) KR20120134129A (fr)
CN (1) CN102762913A (fr)
DE (1) DE102010002228A1 (fr)
WO (1) WO2011104099A1 (fr)

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US8118447B2 (en) 2007-12-20 2012-02-21 Altair Engineering, Inc. LED lighting apparatus with swivel connection
US8360599B2 (en) 2008-05-23 2013-01-29 Ilumisys, Inc. Electric shock resistant L.E.D. based light
US8653984B2 (en) 2008-10-24 2014-02-18 Ilumisys, Inc. Integration of LED lighting control with emergency notification systems
US8324817B2 (en) 2008-10-24 2012-12-04 Ilumisys, Inc. Light and light sensor
US7938562B2 (en) 2008-10-24 2011-05-10 Altair Engineering, Inc. Lighting including integral communication apparatus
US8901823B2 (en) 2008-10-24 2014-12-02 Ilumisys, Inc. Light and light sensor
US8214084B2 (en) 2008-10-24 2012-07-03 Ilumisys, Inc. Integration of LED lighting with building controls
US8540401B2 (en) 2010-03-26 2013-09-24 Ilumisys, Inc. LED bulb with internal heat dissipating structures
US8541958B2 (en) 2010-03-26 2013-09-24 Ilumisys, Inc. LED light with thermoelectric generator
WO2012058556A2 (fr) 2010-10-29 2012-05-03 Altair Engineering, Inc. Mécanismes pour réduire le risque d'électrocution pendant l'installation d'un tube fluorescent
WO2013131002A1 (fr) 2012-03-02 2013-09-06 Ilumisys, Inc. Embase de connecteur électrique pour lampe à base de del
WO2014008463A1 (fr) 2012-07-06 2014-01-09 Ilumisys, Inc. Ensemble d'alimentation électrique pour tube lumineux à del
US9271367B2 (en) 2012-07-09 2016-02-23 Ilumisys, Inc. System and method for controlling operation of an LED-based light
DE202012102963U1 (de) * 2012-08-07 2013-11-13 Rp-Technik E.K. Leuchtstofflampenartiges LED-Leuchtmittel
US9285084B2 (en) 2013-03-14 2016-03-15 Ilumisys, Inc. Diffusers for LED-based lights
US9267650B2 (en) 2013-10-09 2016-02-23 Ilumisys, Inc. Lens for an LED-based light
WO2015112437A1 (fr) 2014-01-22 2015-07-30 Ilumisys, Inc. Lampe à diodes électroluminescentes à adresses
DE102014206438A1 (de) 2014-04-03 2015-06-03 Osram Gmbh Schaltungsanordnung zum Betreiben von n Lasten
US9510400B2 (en) 2014-05-13 2016-11-29 Ilumisys, Inc. User input systems for an LED-based light
US10161568B2 (en) 2015-06-01 2018-12-25 Ilumisys, Inc. LED-based light with canted outer walls
US11084683B1 (en) * 2018-10-16 2021-08-10 Blooming International Limited Winding bar for manufacturing light string and method for manufacturing light string
CN112582516A (zh) 2019-09-27 2021-03-30 鸿盛国际有限公司 线灯封装结构
CN114165742A (zh) 2020-09-11 2022-03-11 鸿盛国际有限公司 多线灯串结构

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GB2401672A (en) * 2001-09-17 2004-11-17 Lumisphere Products Ltd A light source comprising light devices mounted on a twisted substrate
US20070223225A1 (en) * 2006-03-22 2007-09-27 Yashima Dengyo Co., Ltd. LED Lighting Unit Applied to a Fluorescent Lighting Fixture
EP2065632A1 (fr) * 2007-11-27 2009-06-03 Lightology, LLC Lampe linéaire
DE202008017219U1 (de) * 2008-08-05 2009-04-16 Pyroswift Holding Co., Ltd., Wanchai Leuchtdioden-Lichtaggregat

Also Published As

Publication number Publication date
KR20120134129A (ko) 2012-12-11
EP2501987A1 (fr) 2012-09-26
DE102010002228A1 (de) 2011-08-25
CN102762913A (zh) 2012-10-31
WO2011104099A1 (fr) 2011-09-01
US20130058079A1 (en) 2013-03-07

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