EP1783421A1 - Luminaire - Google Patents

Luminaire Download PDF

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Publication number
EP1783421A1
EP1783421A1 EP06021682A EP06021682A EP1783421A1 EP 1783421 A1 EP1783421 A1 EP 1783421A1 EP 06021682 A EP06021682 A EP 06021682A EP 06021682 A EP06021682 A EP 06021682A EP 1783421 A1 EP1783421 A1 EP 1783421A1
Authority
EP
European Patent Office
Prior art keywords
heat
tube
lamp
leds
heat sink
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.)
Withdrawn
Application number
EP06021682A
Other languages
German (de)
English (en)
Inventor
Markus Kocks
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.)
Spectral Gesellschaft fuer Lichttechnik mbH
Original Assignee
Spectral Gesellschaft fuer Lichttechnik mbH
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 Spectral Gesellschaft fuer Lichttechnik mbH filed Critical Spectral Gesellschaft fuer Lichttechnik mbH
Publication of EP1783421A1 publication Critical patent/EP1783421A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
    • 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
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/005—Lighting devices intended to be free-standing with a lamp housing maintained at a distance from the floor or ground via a support, e.g. standing lamp for ambient lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/043—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures mounted by means of a rigid support, e.g. bracket or arm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • 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 luminaire according to the preamble of claim 1.
  • high-power LEDs In luminaires equipped with high-performance LEDs (so-called high-power LEDs), it is necessary to operate the LEDs as cool as possible during operation. If the resulting heat loss is not or only insufficiently dissipated, the LED suffers from power losses and in extreme cases even completely destroyed. In addition, the light spectrum changes.
  • the invention has for its object, a lamp of the aforementioned kind with an improved cooling for the LEDs to create.
  • the basic idea of the cooling according to the invention for a lamp with LEDs is to decouple the location of the heat generation from the location of the heat dissipation. It is no longer glued as usual, the heat sink directly to the LED board, but the heat sink can be mounted remotely depending on the type of luminaire at a different location, this location can be up to several meters away.
  • the luminaire head eg a pendant luminaire
  • the heat transfer device thus serves both the heat conduction and as a holder for the lamp head.
  • the advantage of the invention is that the heat generated at the light source dissipated and the cooling is performed at a remote location. The heat can be dissipated at almost any location.
  • a preferred development proposes as a heat transfer device according to claim 2 at least one rod-shaped tube in which a heat transfer medium is located.
  • This tube is a so-called heat pipe.
  • This heat pipe can be located in an outer cladding tube.
  • the heat transfer via these so-called heat pipes means that one or more tube-like structures are available, via which the heat loss to the actual heat sink can be derived.
  • the heat pipes are brought at one end in contact with the heat produced by the LED's, so that then transported away from there through the heat pipe through the heat and the cooling element is supplied.
  • the basic principle of these heat pipes is that at one end the heat pipe defines a heating zone to which the heat of the LEDs is supplied.
  • the evaporation of a medium takes place, so that a vapor stream is formed in capillaries, this vapor stream is supplied by the capillary action to the other end, namely the cooling zone of the heat pipe.
  • a condensation of the steam which is accompanied by a radiation of heat.
  • the capillary action then causes a reflux of the - again - liquid condensate in corresponding capillaries, so that then a new heat exchange cycle can begin.
  • the development according to claim 3 has the advantage that the heat is distributed over larger areas. This improves the heat transfer.
  • the development in claim 4 has the advantage that the heat pipe is also the electric power transmission.
  • electrical leads for the voltage supply of the LEDs can preferably run in a cladding tube.
  • the heat pipe can also act as a live element.
  • the heat pipes can be provided with flexible, bendable sections according to the embodiment in claim 5.
  • the heat pipes can also be assigned additional functions at the same time.
  • the heat pipe according to claim 6 can serve for suspension of a pendant lamp or according to claim 7 for attaching a lamp.
  • the lamp head for example, a pendant lamp comes without strong constituent elements such as heatsinks or fans, since the heat generated in the ceiling can be dissipated.
  • the heat pipe serves at the same time as a heat pipe and as a pendulum tube. Suspended ceilings can accommodate both the heat sink and a fan or liquid cooling above the ceiling.
  • cantilever or table lamps can be used as a cantilever and at the same time as current-carrying elements in the development in claim 7, the heatpipes.
  • the cooling body is associated with a fan.
  • a fan is used when additional active cooling is required.
  • a powerful fan can be accommodated discreetly in a canopy-like enclosure below the ceiling.
  • the lamp shown in Figs. 1a to 1c is a pendant lamp, which is suspended from a ceiling.
  • the upper area of the pendant lamp has, in addition to a suspension device, a heat sink 1 made of radial lamellae.
  • a fan 2 is integrated in this heat sink 1.
  • the central lower region of the heat sink 1 has a heat chamber 3, which - as will be explained later - should distribute the heat over a larger area.
  • the lower end of the lamp has a board 4 with LEDs 5 on. Again, a heat chamber 3 is provided above the board 4 for distributing the heat to a larger area.
  • the heat transfer device 6 is formed by a tube 7 of a so-called heat pipe.
  • the tube 7 is located in an outer cladding. 8
  • the operation of the heat transfer device 6 is as follows with reference to FIG. 2:
  • Heat is generated by the LEDs 5, which collects in the heat chamber 3.
  • the lower end of the tube 7 of the heat pipe dives.
  • This heat pipe consists of a plurality of capillaries 9, which are arranged longitudinally in the tube 7 made of copper.
  • a heat transport medium located in the tube 7, a heat transport medium.
  • heat 10 which acts on the lower end of the tube 7 an evaporation of the medium located in the tube 7 takes place.
  • the evaporation of a liquid medium requires energy and therefore leads to a cooling effect.
  • the evaporation creates a vapor stream which is transported along the capillary 9 very quickly to the other end of the tube 7 of the heat pipe.
  • a heat release 11 which is discharged via the heat sink 1 and the fan 2 to the ambient air.
  • the now again liquid condensate flows back through the capillary action of the capillary 9, so that a new cooling circuit can begin.
  • Fig. 3 shows a lamp in the form of a cantilever lamp.
  • a lamp head 12 is provided with a board 4 with LEDs 5.
  • the other end of the lamp is formed by a heat sink 1.
  • the tube 7 is a heat pipe, said tube 7 also serves as a boom arm of the lamp.
  • this cantilever lamp is according to the pendant lamp, as has been previously described. Ie. the resulting heat in the lamp head 12 is supplied via the heat pipe to the heat sink 1.
  • Fig. 4 finally shows a table lamp with a lamp head 12 and a pedestal 13. Between the lamp head 12 and the pedestal 13, two tubes 7 a heat pipe are provided. These two heatpipes are used for heat dissipation and as a boom arm. An additional function is as the current-carrying elements for the power supply of the LED's 5. At the rear end of the two tubes 7 is the heat sink. 1

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP06021682A 2005-10-26 2006-10-17 Luminaire Withdrawn EP1783421A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005016756U DE202005016756U1 (de) 2005-10-26 2005-10-26 Leuchte

Publications (1)

Publication Number Publication Date
EP1783421A1 true EP1783421A1 (fr) 2007-05-09

Family

ID=35613346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06021682A Withdrawn EP1783421A1 (fr) 2005-10-26 2006-10-17 Luminaire

Country Status (2)

Country Link
EP (1) EP1783421A1 (fr)
DE (1) DE202005016756U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2437618A (en) * 2006-04-19 2007-10-31 Yung-Chiang Liao A lamp structure exhibiting evenly distributed light
WO2011011986A1 (fr) * 2009-07-29 2011-02-03 Tung Kuo-Feng Appareil d'éclairage à del
DE102010014338A1 (de) 2010-04-06 2011-10-06 Spittler Lichttechnik Gmbh Reflektorleuchte

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2851830Y (zh) * 2005-11-16 2006-12-27 廖永强 台灯结构
WO2008056308A1 (fr) * 2006-11-06 2008-05-15 Koninklijke Philips Electronics N.V. Améliorations dans des systèmes d'éclairage
IT1393698B1 (it) * 2009-04-22 2012-05-08 Artemide Spa Apparecchio di illuminazione, in particolare apparecchio di illuminazione a led, con sistema di dissipazione di calore
DE102010022856B4 (de) * 2010-06-07 2013-10-31 Mercury Lighting Ltd. Beleuchtungseinrichtung und Leuchte
DE102010046876B4 (de) 2010-09-29 2014-04-17 Oliver Melhaff Einschubmodul für Hochleistungs-LEDs
US8979353B2 (en) 2011-08-11 2015-03-17 Starlights, Inc. Light fixture having modular accessories and method of forming same
ITBS20130047A1 (it) * 2013-04-05 2014-10-06 Flos Spa Dispositivo di illuminazione a stelo
US10281218B2 (en) * 2013-06-26 2019-05-07 Tai-Her Yang Heat-dissipating structure having suspended external tube and internally recycling heat transfer fluid and application apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4974135A (en) * 1990-04-03 1990-11-27 Wen Tsung Chen Structure of adjustable desk lamp
EP1357335A2 (fr) * 2002-04-23 2003-10-29 Nichia Corporation Dispositif d'éclairage
DE202004002278U1 (de) * 2004-02-10 2004-06-24 Locher, Francois Wasserfüllstandsmelder
EP1528315A2 (fr) * 2005-01-11 2005-05-04 Jeffrey Chen Dispositif d'éclairage à moyens de dissipation de chaleur
WO2006066532A1 (fr) * 2004-12-22 2006-06-29 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Dispositif d'eclairage ayant au moins une diode electroluminescente et phare

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4974135A (en) * 1990-04-03 1990-11-27 Wen Tsung Chen Structure of adjustable desk lamp
EP1357335A2 (fr) * 2002-04-23 2003-10-29 Nichia Corporation Dispositif d'éclairage
DE202004002278U1 (de) * 2004-02-10 2004-06-24 Locher, Francois Wasserfüllstandsmelder
WO2006066532A1 (fr) * 2004-12-22 2006-06-29 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Dispositif d'eclairage ayant au moins une diode electroluminescente et phare
EP1528315A2 (fr) * 2005-01-11 2005-05-04 Jeffrey Chen Dispositif d'éclairage à moyens de dissipation de chaleur

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2437618A (en) * 2006-04-19 2007-10-31 Yung-Chiang Liao A lamp structure exhibiting evenly distributed light
WO2011011986A1 (fr) * 2009-07-29 2011-02-03 Tung Kuo-Feng Appareil d'éclairage à del
DE102010014338A1 (de) 2010-04-06 2011-10-06 Spittler Lichttechnik Gmbh Reflektorleuchte
EP2375148A2 (fr) 2010-04-06 2011-10-12 Spittler Lichttechnik Lampe à réflecteur
DE102010014338B4 (de) * 2010-04-06 2013-01-10 Spittler Lichttechnik Gmbh Reflektorleuchte

Also Published As

Publication number Publication date
DE202005016756U1 (de) 2006-01-05

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