EP2525137A1 - Lampe dotée d'un module DEL comme moyen d'éclairage et d'un ventilateur destinés au refroidissement - Google Patents

Lampe dotée d'un module DEL comme moyen d'éclairage et d'un ventilateur destinés au refroidissement Download PDF

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Publication number
EP2525137A1
EP2525137A1 EP11405260A EP11405260A EP2525137A1 EP 2525137 A1 EP2525137 A1 EP 2525137A1 EP 11405260 A EP11405260 A EP 11405260A EP 11405260 A EP11405260 A EP 11405260A EP 2525137 A1 EP2525137 A1 EP 2525137A1
Authority
EP
European Patent Office
Prior art keywords
heat sink
reflector
fan
led module
zone
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Withdrawn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
EP11405260A
Other languages
German (de)
English (en)
Inventor
Otto Flach
Volker Knauff
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.)
Ansorg GmbH
Original Assignee
Ansorg 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 Ansorg GmbH filed Critical Ansorg GmbH
Priority to EP11405260A priority Critical patent/EP2525137A1/fr
Publication of EP2525137A1 publication Critical patent/EP2525137A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional 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 present invention relates to an electric lamp using at least one high-power LED - hereinafter referred to as LED for the most part - as well as a reflector and the problem of efficiently dissipating the heat generated by the LED during operation.
  • a blower is provided for generating an air flow in the supply air zone, the exhaust zone and through a gap.
  • Subject of the DE 202 02 558 U1 is a lamp arranged in an installation space with a cylindrical reflector, in the bottom of which the bulb is inserted. In the bottom outlet openings and near the reflector mouth inlet openings are provided which allow a circulating convection flow. With heating of the lamp, air is sucked in through the inlet openings from the installation space, led by cooling on the lamp and passed through the outlet openings back into the room.
  • the reflector is surrounded by a shield which leaves a gap in the direction of the reflector. Air is sucked in through the intermediate space and, once again, the luminous flux is returned to the installation space.
  • the WO 2008/086 387 A2 relates to a luminaire with outer housing, arranged therein tube for air flow and reflector positioned therein. Above the tube and reflector sit an LED assembly and above a fan. Air drawn in from the room flows through the tube - probably also the reflector - to the LED assembly to be cooled. The heated air is released through the space between the tube and housing via outlet openings in the tube back into the room.
  • the EP 1 561 993 A2 shows a lamp with outer housing and reflector therein, between which a flow channel is located. At the bottom of the reflector, an LED is arranged with a heat sink. By means of a fan is air through the Flow channel moves, either sucked near the heat sink and ejected through the mouth of the flow channel, or vice versa.
  • the invention Based on the known luminaire structure with an LED module as a light source, a heat sink and a blower, the invention has the object to intensify the cooling effect of guided by the fan through the air to LED modules higher powers without stronger blower or to use smaller blowers. Thus, it is necessary to make the ratio of light output and necessary cooling fan performance more efficient, so to reduce the equipment costs quasi and reduce production costs. With an at least relatively small fan in the lamp a greater freedom for their design design is to be achieved.
  • Another object of the invention is to make the air flow to optimally depending on the spatial planning and the field of application of the lamp.
  • the reflector channels with its mouth the exhaust zone or the supply air zone.
  • a guide contour projects narrowing into the guide gap in order to swirl the air flow existing on both sides of the guide gap.
  • the guide gap is circular.
  • the LED module is arranged at least in principle in the plane of the guide gap.
  • the heat sink has a passage composed of interstices located between fins of the heat sink.
  • the passage is arranged in alignment with the guide gap and projects beyond the guide gap in cross section.
  • the LED module has a projection which is arranged opposite the guide contour and projects into the guide gap in a narrowing manner.
  • the LED module is equipped with at least one high-power LED.
  • the heat sink has a core inside the fins.
  • the LED module is disposed substantially thermally conductive on the core.
  • the fan is arranged above the heat sink at least partially congruent to the passage, whereby the LED module undergoes cooling due to heat conduction to the heat sink and convection to the air flow from above to below the LED module.
  • the heat sink is surrounded on its outer circumference by a jacket, to which the reflector adjoins.
  • the guide contour is formed in the transition from the jacket to the reflector as a bending zone.
  • the supply air zone extends from an illumination space axially or radially to the fan and to the heat sink, while the exhaust zone is channeled from the heat sink opening through the guide gap and from the reflector into the lighting space; or the supply air zone is channeled from the illumination space into the reflector, through the guide gap towards the heat sink, while the exhaust air zone extends from the heat sink toward the blower opening axially or radially into the lighting space.
  • FIGS. 1A and 1B are identical to FIGS. 1A and 1B.
  • This pair of figures illustrates a first variant of the air duct through the lamp installed here in the ceiling installation for cooling the present as a light source in the lamp LED module 5.
  • the lamp has essentially also a reflector 1, a heat sink 4 for heat dissipation from the LED module 5 and the blower 6 for heat dissipation from the heat sink 4. from the reflector 1 extends the heat sink 4, at least partially comprehensive shell 2.
  • the reflector 1 is essentially a truncated cone of circular cross-section and has an outer side 11 and an inner surface 12.
  • the cooling body 4 surrounding extends opposite the light exit side of the reflector 1 of the jacket 2, which - as shown - is integrally formed with the reflector 1 , but may also be present as a separate component.
  • a clip part that engages both components can be provided.
  • Leitkontur 3 is formed, which is directed in the direction of the LED module 5 .
  • a vortex area is thereby formed in each case.
  • On the outside 11 creates a circular constriction, in which the staple part is anchored.
  • the heat sink 4 embedded by the jacket 2 has a central core 40, from which webs extend in the radial direction, so that passages 41 arise therebetween.
  • the eg round LED module 5 is arranged, which has at least one high-power LED 50, preferably several high-power LEDs 50 .
  • the individual high-power LEDs 50 are fixed on a circuit board 51 , the power supply and systematic Positioning of high power LEDs 50 is used.
  • the board 51 has a high thermal conductivity for the effective dissipation of the heat generated by the high-power LEDs 50 toward the heat sink 4.
  • the LED module 5 projects beyond the core 40 of the heat sink 4 with a projection 52, which extends as far as the mouths of the passages 41 extends.
  • the LED module 5 is positioned in the plane of the guide contour 3 . Between the outer periphery of the LED module 5 and the guide contour 3 , an annular guide gap 30 for the passage of the air flow from the Zu Kunststoffzone Z in the exhaust zone A is present.
  • the outer side 71 and an inner side 72 having pot-shaped frame 7 is intended for the preferably releasable mounting of the electric lamp.
  • the frame 7 with the luminaire held therein is preferably detachably inserted into a recess 90 in the ceiling 9 .
  • Below the ceiling 9 is the lighting space 98, above the ceiling 9 of the ceiling space 99, in which the frame 7 protrudes.
  • a frame gap 70 open to the lighting space 98 remains between the outside 11 of the reflector 1 and the inside 72 of the frame 7 .
  • the blower 6 arranged above the heat sink 4 serves for axial suction of cold air from the supply air zone Z through the frame gap 70 out of the lighting space 98.
  • the blower 6 is open at the top, but shielded to the side.
  • the hitherto cool air is conveyed by the blower 6 through the passages 41 in the heat sink 4 and thereby absorbs heat from this, which passes as heat conduction from the LED module 5 to the heat sink 4 .
  • FIGS. 2A and 2B are identical to FIGS. 2A and 2B.
  • Luminaire structure and ceiling installation are the previous pair of figures unchanged, however, the air flow in this second variant between the exhaust zone A and Zu Kunststoffzone Z is reversed, ie the fan 6 operates in the opposite effective direction.
  • the blower 6 is again open at the top, but shielded to the side, and is used for axial suction of cold air from the Zu Kunststoffzone Z by the reflector 1 from the illumination space 98.
  • the Leitkontur 3 Before the entry of cold air into the guide gap 30 is done by the Leitkontur 3 and the acting as a baffle LED module 5 a turbulence to turbulent flow, so that the LED module 5 undergoes convection cooling from below.
  • the LED module 5 After passing through the guide gap 30 , the LED module 5 is cooled on the supernatant 52 as a result of widening of the flow cross section and renewed turbulence.
  • the hitherto partially heated air is further promoted by the fan 6 through the passages 41 in the heat sink 4 and removes this heat.
  • the potential difference between the hot LED module 5 and the less-warm heat sink 4 results in a heat conduction to this, so that the LED module 5 undergoes cooling. From the blower 6 , the hot air laden with waste heat between the reflector 1 and the frame 7 is blown through the frame gap 70 in the exhaust zone A in the lighting space 98 .
  • Luminaire structure and ceiling installation are unchanged from the previous two pairs of figures, but the frame 7 has a opening into the ceiling space 99 frame opening 73.
  • the frame gap 70 between the reflector 1 and frame 7 is now unnecessary or meaningless for the cooling of the lamp.
  • the fan 6 remains open at the top, but shielded to the side.
  • the third variant according to FIG. 3 is by means of the blower 6 cold air the Zu Kunststoffzone Z sucked, which is located in the ceiling space 99 .
  • the rest of the flow path corresponds to the first variant according to Figures 1A and 1B with blowing out the hot air through the reflector 1 in the exhaust zone A in the illumination space 98th
  • the luminaire structure is unchanged from the previous pair of figures, but neither a frame 7 nor the installation in a ceiling 9 are shown. Such a situation arises when the luminaire is installed freely suspended, for example.
  • the fan 6 remains open at the top, but shielded to the side.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP11405260A 2011-05-20 2011-05-20 Lampe dotée d'un module DEL comme moyen d'éclairage et d'un ventilateur destinés au refroidissement Withdrawn EP2525137A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11405260A EP2525137A1 (fr) 2011-05-20 2011-05-20 Lampe dotée d'un module DEL comme moyen d'éclairage et d'un ventilateur destinés au refroidissement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11405260A EP2525137A1 (fr) 2011-05-20 2011-05-20 Lampe dotée d'un module DEL comme moyen d'éclairage et d'un ventilateur destinés au refroidissement

Publications (1)

Publication Number Publication Date
EP2525137A1 true EP2525137A1 (fr) 2012-11-21

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EP11405260A Withdrawn EP2525137A1 (fr) 2011-05-20 2011-05-20 Lampe dotée d'un module DEL comme moyen d'éclairage et d'un ventilateur destinés au refroidissement

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016070716A1 (fr) * 2014-11-06 2016-05-12 广州市浩洋电子有限公司 Système de dissipation de chaleur pour lampe de scène, lampe de scène l'utilisant et son procédé de dissipation de chaleur
WO2020101560A1 (fr) * 2018-11-13 2020-05-22 Stoeoed Jan Système d'éclairage et de climatisation d'intérieur
EP4219168A1 (fr) * 2022-02-01 2023-08-02 GEW (EC) Limited Appareil de durcissement à led
US11920774B2 (en) 2022-02-01 2024-03-05 Gew (Ec) Limited LED curing apparatus and cooling module

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165051A (en) * 1960-09-22 1965-01-12 Pyle National Co Aspirating-type combination light and ventilating unit
DE20202558U1 (de) 2002-02-19 2003-07-03 Zumtobel Staff Gmbh & Co Kg Konvektionsreflektor
US20050111234A1 (en) * 2003-11-26 2005-05-26 Lumileds Lighting U.S., Llc LED lamp heat sink
WO2005059435A1 (fr) * 2003-12-16 2005-06-30 Daxtor Aps Insert avec ventilation
US20060193139A1 (en) * 2005-02-25 2006-08-31 Edison Opto Corporation Heat dissipating apparatus for lighting utility
US20080165535A1 (en) * 2007-01-09 2008-07-10 Mazzochette Joseph B Thermally-Managed Led-Based Recessed Down Lights
US20100060132A1 (en) * 2008-09-11 2010-03-11 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led illuminating device
DE102008044956A1 (de) 2008-08-29 2010-03-25 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsvorrichtung zum Einbau in eine Platte
US20100259935A1 (en) * 2007-12-07 2010-10-14 Osram Gesellschaft Mit Beschraenkter Haftung Heat sink and lighting device comprising a heat sink
EP2312202A1 (fr) * 2009-10-13 2011-04-20 Sunonwealth Electric Machine Industry Co., Ltd. Lampe

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165051A (en) * 1960-09-22 1965-01-12 Pyle National Co Aspirating-type combination light and ventilating unit
DE20202558U1 (de) 2002-02-19 2003-07-03 Zumtobel Staff Gmbh & Co Kg Konvektionsreflektor
US20050111234A1 (en) * 2003-11-26 2005-05-26 Lumileds Lighting U.S., Llc LED lamp heat sink
EP1561993A2 (fr) 2003-11-26 2005-08-10 LumiLeds Lighting U.S., LLC Lampes à diode électroluminescente et procédé de refroidissement de la diode
WO2005059435A1 (fr) * 2003-12-16 2005-06-30 Daxtor Aps Insert avec ventilation
US20060193139A1 (en) * 2005-02-25 2006-08-31 Edison Opto Corporation Heat dissipating apparatus for lighting utility
US20080165535A1 (en) * 2007-01-09 2008-07-10 Mazzochette Joseph B Thermally-Managed Led-Based Recessed Down Lights
WO2008086387A2 (fr) 2007-01-09 2008-07-17 Lighting Science Group Corporation Luminaires encastrés à éclairage vers le bas munis de del avec gestion de la chaleur
US20100259935A1 (en) * 2007-12-07 2010-10-14 Osram Gesellschaft Mit Beschraenkter Haftung Heat sink and lighting device comprising a heat sink
DE102008044956A1 (de) 2008-08-29 2010-03-25 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsvorrichtung zum Einbau in eine Platte
US20100060132A1 (en) * 2008-09-11 2010-03-11 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led illuminating device
EP2312202A1 (fr) * 2009-10-13 2011-04-20 Sunonwealth Electric Machine Industry Co., Ltd. Lampe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016070716A1 (fr) * 2014-11-06 2016-05-12 广州市浩洋电子有限公司 Système de dissipation de chaleur pour lampe de scène, lampe de scène l'utilisant et son procédé de dissipation de chaleur
WO2020101560A1 (fr) * 2018-11-13 2020-05-22 Stoeoed Jan Système d'éclairage et de climatisation d'intérieur
US20220010956A1 (en) * 2018-11-13 2022-01-13 Jan Stööd Indoor lighting and climate system
EP4219168A1 (fr) * 2022-02-01 2023-08-02 GEW (EC) Limited Appareil de durcissement à led
US11920774B2 (en) 2022-02-01 2024-03-05 Gew (Ec) Limited LED curing apparatus and cooling module

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