EP2492589A1 - Dispositif d'éclairage doté d'un dissipateur de chaleur - Google Patents

Dispositif d'éclairage doté d'un dissipateur de chaleur Download PDF

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Publication number
EP2492589A1
EP2492589A1 EP12155711A EP12155711A EP2492589A1 EP 2492589 A1 EP2492589 A1 EP 2492589A1 EP 12155711 A EP12155711 A EP 12155711A EP 12155711 A EP12155711 A EP 12155711A EP 2492589 A1 EP2492589 A1 EP 2492589A1
Authority
EP
European Patent Office
Prior art keywords
lighting device
housing
end wall
heat
heat spreader
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
Application number
EP12155711A
Other languages
German (de)
English (en)
Other versions
EP2492589B1 (fr
Inventor
Martin Wüthrich
Christian Hochfilzer
Peter Boss
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.)
Regent Beleuchtungskoerper AG
Original Assignee
Regent Beleuchtungskoerper AG
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 Regent Beleuchtungskoerper AG filed Critical Regent Beleuchtungskoerper AG
Publication of EP2492589A1 publication Critical patent/EP2492589A1/fr
Application granted granted Critical
Publication of EP2492589B1 publication Critical patent/EP2492589B1/fr
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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
    • 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
    • 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
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • 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
    • 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
    • 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
    • F21V29/80—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with pins or wires
    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes

Definitions

  • the invention relates to a lighting device according to the preamble of claim 1.
  • the object of the invention is to propose a lighting device which does not have the disadvantages of the prior art. In particular, should be done by means of natural convection effective cooling of the lighting device.
  • the object is achieved by a lighting device according to the characterizing part of claim 1.
  • One of the advantages of the invention is that the heat loss of the light source is dissipated on the one hand via the cams to the housing and on the other hand to air flowing through the channels.
  • the chimney-like design of the housing causes a reinforcement of the air flow or convection, which is also here is called chimney effect. This cooling effect is supported by the fact that heat loss is transmitted directly to the housing in the area of the contact surfaces.
  • Another advantage of the invention is that the inventive design of the lighting device in different positions or positions is effective because a congestion of air is prevented by the chimney effect acts not only in the longitudinal direction of the housing but also in the front and rear of the housing.
  • the lighting means is designed as an LED module with at least one LED and fixed to the end wall.
  • One of the advantages of the invention is that a light source with a long life and advantageous light properties in a particularly compact design with the acting as a carrier module end wall of the heat spreader is directly connected.
  • a plurality of heat-distributing elements which are designed as cooling pins and / or cooling ribs, are arranged on the end wall opposite to the lighting means.
  • One of the advantages of the invention is that lamp-specific, a corresponding heat spreader can be selected or produced, wherein cooling pins and / or cooling fins enhance the heat distribution to the ambient air.
  • the end wall has at least one radially inwardly directed channel which opens into at least one orifice in the end wall, the mouth preferably being arranged approximately centrally in the end wall.
  • One of the advantages of the invention is that the removal of heat loss by air thereby improves and the formation of heat build-up is prevented.
  • the reflector protrudes into the trough and / or the reflector projects at least partially into the housing.
  • the lighting device can be realized in a compact design, wherein the cooling of the lamp or the dissipation of heat loss is still efficient.
  • the chimney effect described is always guaranteed.
  • each cam has a width b which is related to an imaginary outer mean diameter D of the trough such that effective heat loss of the luminous means can be dissipated via the cams to the housing and to air flowing through the channels so that both effects are advantageously combined.
  • the jacket and / or the end wall is perforated at least in places.
  • One of the advantages of the invention is that increased convection can be achieved by means of bores, holes.
  • the housing is connected by pressing and / or joining and / or cold stretching and / or Eindehn- and / or adhesive bond with the heat spreader.
  • One of the advantages of the invention is that in particular the heat transfer from the heat spreader to the housing is increased by said type of connection.
  • the reflector has a light exit opening whose outer opening edge is at least locally spaced from the housing.
  • One of the advantages of the invention is that the natural air flow in the housing is conveyed in different fastening positions of the lighting device by inflow and / or outflow of air.
  • the heat spreader made of light metal, in particular aluminum, is formed.
  • the heat spreader with trough, cam and / or réelleverteilettin can be produced by die-casting. A reworking of the die-cast heat spreader, in particular the end wall, cams, bores and / or heat-conducting elements is possible with known processing methods.
  • the heat spreader can also be subsequently surface treated for improved heat conduction.
  • the housing can be formed of a metal or non-metallic material, so that a wide design freedom in the choice of housing shapes and / or housing materials is possible, always ensuring effective heat dissipation by means of the heat spreader.
  • FIG. 1 1 illustrates an exploded, simplified illustration of a half section of the lighting device 1 according to the invention, with a lighting means 40, a heat distributor 20 connected thereto, a housing 10 connected to the heat distributor 20 and a reflector 30.
  • the heat spreader 20 preferably has a trough 201 with a jacket 203 and an end wall 205, wherein the light source 40 bears against the end wall 205.
  • the jacket 203 and / or the end wall 205 may be broken at least in places.
  • the heat spreader 20 can also be designed as a support wall 205 with cams 207 arranged on it.
  • the support wall 205, or end wall can be offset from holes which form the channels 209, in order to allow good ventilation.
  • the light-emitting means 40 mounted on the support wall conducts its heat loss to the support wall 205. Due to the thermal coupling of the support wall via the cams to the housing 10, this heat loss is at least partially released to the housing. Another part of the heat loss is given by convection to the ambient air.
  • the shell 203 of the trough 201 has two mutually remote shell ends 2031,2032 and outwardly projecting cams 207, wherein between the cam 207 continuous from one to the other shell end 2031,2032 extending channels 209 are present.
  • the housing 10 In the assembled state of the lighting device, which is also referred to as a light, the housing 10 abuts against the cam 207.
  • the contact surfaces are simplified and not to scale denoted by reference numeral 11.
  • the heat loss of the light source 40 is dissipated on the one hand via the cam 207 to the housing 10 and on the other hand to the air flowing through the channels 209.
  • the chimney-like configuration of the housing 10 causes an amplification of the air flow or convection. This cooling effect is assisted by the fact that heat loss is transmitted directly to the housing 10 in the region of the abutment surfaces 11.
  • the light-emitting means 40 is preferably designed as an LED module with at least one LED and attached to the end wall 205.
  • Wörmeleitschn such as thermal grease, an effective heat transfer from the bulb can be achieved on the heat spreader 20.
  • FIG. 2 illustrates the heat spreader 20 with arranged thereon illuminant 40 of the inventive lighting device 1 in a plan view.
  • Each cam 207 has a width b, which is to an imaginary outer average diameter D of the trough 201 in the ratio of 1/64 to 1/4, preferably in the ratio of 1/32 to 1/8, particularly preferably in the ratio 1/16 ,
  • the part of the housing on which the cams 207 abut, may be parallel or inclined to a central axis, not shown, of the housing.
  • FIG. 3 Illustrated shows a longitudinal section of the heat spreader along the in FIG. 2 illustrated section line III-III.
  • the sheath 203 and / or the end wall 205 may be perforated at least in places to assist in convection.
  • a plurality of heat distribution elements 211 which are designed as cooling pins and / or cooling ribs, can be arranged on the end wall 205, opposite the light source 40.
  • the heat distribution elements 211 do not directly contact the housing 10, which can, however, be realized by suitable design measures.
  • Reference numeral 2050 designates a channel, bore or opening.
  • the end wall 205 has at least one such radially inwardly directed channel 2050. This opens into an approximately central mouth 2051 in the end wall 205 to improve the dissipation of heat loss by air. This prevents heat accumulation on the bottom of the end wall and promotes convection.
  • Reference numerals 2031 and 2032 designate mutually remote shell ends.
  • FIGS. 4 illustrates a perspective view of the inventive lighting device 1, wherein the rear or rear part of the housing is shown broken off, so that the condimentableitopathy 211, which are formed as pins, are visible.
  • the reference numeral 2050 designates a channel which opens into the approximately central mouth 2051.
  • FIG. 5 illustrates a side view of a composite inventive lighting device 1, with a view of the housing 10.
  • the shell of the housing 10 has a plurality of ventilation openings, which support the convection in the housing. Depending on the position of the lighting device, they serve as suction openings or inlet openings and / or outlet openings.
  • FIGS. 6 and 7 illustrate a sectional view of a lighting device 1 according to the invention, wherein the elongated arrows K illustrate the natural convection and the wider arrows W heat transfer from the heat spreader 20 to the housing 10.
  • the reflector 30 has a light exit opening 301, whose outer opening edge 303 is spaced at least in places from the housing 10, so that an opening, a gap or passage is present.
  • a light exit opening 301 whose outer opening edge 303 is spaced at least in places from the housing 10, so that an opening, a gap or passage is present.
  • FIG. 7 reference numeral 304 denotes a shutter which is disposed between the opening edge 303 of the reflector and the housing.
  • the reflector has a reflector edge 305, in the outer region of the aperture 304 is arranged.
  • the reflector edge 305 is also referred to as a collar or flange and may have a planar extension. Both the aperture 304, as well as the reflector edge 305 may at least in places as through holes, slots or the like formed openings, which serve to assist the ventilation of the housing and the dissipation of heat loss.
  • FIG. 8 illustrates a plan view of the back of the inventive lighting device 1 with the respective section lines XX, XI-XI and XII-XII.
  • FIGS. 9, 10 and 11 illustrate in simplified representation, each a half-section along the section lines of FIG. 8 the elongated arrows K illustrate the natural convection in and through the housing 10 and the wider arrows W heat transfer from the heat spreader 20 to the housing 10.
  • openings 110 are present on the casing of the housing 10. These are, for example, designed as elongated or rectangular holes. As opening 110 also the front and rear opening on the housing 10 are understood.
  • Reference numeral 1100 designates a gap or opening between the aperture of the reflector and the housing, which extends at least partially along the inner circumference of the housing in this area.
  • the gap allows as shown that the designated by arrow K air can flow through this gap in the housing.
  • n the length of a cam, that is cam length.
  • the cam length of the inventive Lighting device can be related to the mean diameter D, which in FIG. 3 is shown.
  • the ratio between n and D is in the range of 2/1 to 1/120, preferably in the range of 1 ⁇ 2 to 1/80, more preferably in the range of 1 ⁇ 2 to 1/10.
  • the natural convection in the housing can be supported by an electrically operated, not shown fan.
  • the fan can be temperature-controlled.
  • the housing is divided into several parts or partial lateral surfaces - here in a rear part 120 and a front part 130.
  • the respective parts are conical or designed as a blunt cone.
  • the housing shape is not limited to this embodiment, but may consist of a conical part and / or a cylindrical part.
  • the cross-sectional area with respect to a section perpendicular to the longitudinal axis of the housing may be round and / or polygonal.
  • the cams may extend over the end wall into the region of the possibly existing heat dissipation elements.
  • the cams may be formed as a part of the housing, wherein a portion of the cam at least in places on the rear housing part 120 and / or front housing part 130 bear or are connected thereto.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP12155711.0A 2011-02-22 2012-02-16 Dispositif d'éclairage doté d'un dissipateur de chaleur Active EP2492589B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00304/11A CH704544A1 (de) 2011-02-22 2011-02-22 Leuchteinrichtung mit Wärmeverteiler.

Publications (2)

Publication Number Publication Date
EP2492589A1 true EP2492589A1 (fr) 2012-08-29
EP2492589B1 EP2492589B1 (fr) 2016-04-27

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Application Number Title Priority Date Filing Date
EP12155711.0A Active EP2492589B1 (fr) 2011-02-22 2012-02-16 Dispositif d'éclairage doté d'un dissipateur de chaleur

Country Status (2)

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EP (1) EP2492589B1 (fr)
CH (1) CH704544A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180352A (zh) * 2013-05-24 2014-12-03 深圳市海洋王照明工程有限公司 大功率灯具
GB2517064A (en) * 2013-06-14 2015-02-11 Aurora Ltd Improved lighting unit
WO2015133196A1 (fr) * 2014-03-03 2015-09-11 株式会社アイ・ライティング・システム Dispositif d'éclairage et unité de source de lumière à del
JP2015167130A (ja) * 2015-02-20 2015-09-24 株式会社アイ・ライティング・システム 照明器具及びｌｅｄ光源ユニット

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008006327U1 (de) * 2007-12-04 2008-07-17 Cooler Master Co., Ltd., Chung-Ho City Lampe mit Wärmeaufbau sowie zugehörige Lampenabdeckung
DE202008006325U1 (de) * 2007-11-28 2008-07-17 Cooler Master Co., Ltd., Chung-Ho City Wärmeabführanordnung und Lampe mit dieser
WO2010066841A1 (fr) * 2008-12-11 2010-06-17 Ledned Holding B.V. Système de lampe à del
EP2208926A1 (fr) 2009-01-16 2010-07-21 RD System-Leuchten AG Module de lampe doté d'un garnissage DEL
US20100237760A1 (en) * 2009-03-17 2010-09-23 Intematix Corporation LED Based Lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7766512B2 (en) * 2006-08-11 2010-08-03 Enertron, Inc. LED light in sealed fixture with heat transfer agent
KR100902631B1 (ko) * 2008-10-24 2009-06-12 현대통신 주식회사 나노스프레더를 이용한 원형구조의 ｌｅｄ 발광 조명등

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008006325U1 (de) * 2007-11-28 2008-07-17 Cooler Master Co., Ltd., Chung-Ho City Wärmeabführanordnung und Lampe mit dieser
DE202008006327U1 (de) * 2007-12-04 2008-07-17 Cooler Master Co., Ltd., Chung-Ho City Lampe mit Wärmeaufbau sowie zugehörige Lampenabdeckung
WO2010066841A1 (fr) * 2008-12-11 2010-06-17 Ledned Holding B.V. Système de lampe à del
EP2208926A1 (fr) 2009-01-16 2010-07-21 RD System-Leuchten AG Module de lampe doté d'un garnissage DEL
US20100237760A1 (en) * 2009-03-17 2010-09-23 Intematix Corporation LED Based Lamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180352A (zh) * 2013-05-24 2014-12-03 深圳市海洋王照明工程有限公司 大功率灯具
GB2517064A (en) * 2013-06-14 2015-02-11 Aurora Ltd Improved lighting unit
GB2517064B (en) * 2013-06-14 2020-04-15 Aurora Ltd Improved lighting unit
WO2015133196A1 (fr) * 2014-03-03 2015-09-11 株式会社アイ・ライティング・システム Dispositif d'éclairage et unité de source de lumière à del
JP2015167130A (ja) * 2015-02-20 2015-09-24 株式会社アイ・ライティング・システム 照明器具及びｌｅｄ光源ユニット

Also Published As

Publication number Publication date
EP2492589B1 (fr) 2016-04-27
CH704544A1 (de) 2012-08-31

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