EP2622258B1 - Corps de refroidissement et agencement de module de lampe pour lampe - Google Patents

Corps de refroidissement et agencement de module de lampe pour lampe Download PDF

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Publication number
EP2622258B1
EP2622258B1 EP11760493.4A EP11760493A EP2622258B1 EP 2622258 B1 EP2622258 B1 EP 2622258B1 EP 11760493 A EP11760493 A EP 11760493A EP 2622258 B1 EP2622258 B1 EP 2622258B1
Authority
EP
European Patent Office
Prior art keywords
segment
heat sink
luminaire
sink according
designed
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.)
Not-in-force
Application number
EP11760493.4A
Other languages
German (de)
English (en)
Other versions
EP2622258A1 (fr
Inventor
Wolfgang Bechter
Bernd Walser
Michael Spiegel
Wolfgang Rüf
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2622258A1 publication Critical patent/EP2622258A1/fr
Application granted granted Critical
Publication of EP2622258B1 publication Critical patent/EP2622258B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/013—Housings, e.g. material or assembling of housing parts the housing being an extrusion
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • 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 heat sink according to the preamble of claim I. Moreover, the invention relates to a, such a heat sink having, light module assembly for a lamp, and a lamp with such a heat sink or with such a light module assembly.
  • a heat sink with a horizontal base plate is known from which extend upwards, a plurality of plate-shaped cooling fins.
  • the surface of the heat sink is particularly large, whereby an effective heat transfer from the heat sink to the surrounding air is possible.
  • a heat sink for a luminaire which has an approximately plate-shaped main body, from which a plurality of cooling ribs extend pointing upwards.
  • Another heat sink for a lamp having a plurality of upwardly facing cooling fins is from the Scriptures US 2010 / 0002433A1 known.
  • the present invention has for its object to provide an improved heat sink;
  • the heat sink with high efficiency to allow production with relatively little use of material.
  • a light module assembly is to be specified with such a heat sink, and an improved light with such a heat sink or with such a light module assembly.
  • a heat sink for a luminaire which has a first, at least to a first approximate plate-shaped segment and a second, at least to a first approximation plate-shaped segment, wherein the second segment with is directly connected to the first segment and in such a way that the second segment, when the first segment is oriented horizontally, extends vertically upward at least substantially from a central region of the first segment, measured from an upwardly facing surface region of the first segment first segment out to a vertical extent.
  • the heat sink is designed such that, viewed in a vertical section through the first segment and the second segment, except for the second segment has no part which is located above a level which is defined by the half of the vertical extension, preferably through a quarter of the vertical extent.
  • a corresponding heat dissipation via radiation is particularly advantageous if there is no or only a very small air circulation around the heat sink; Such a situation can be given, for example, in the case of recessed luminaires, in particular in the case of recessed ceiling luminaires.
  • the heat sink is therefore particularly suitable for use under conditions in which there is no or only a particularly low air flow around the heat sink.
  • the heat sink can be produced by significantly reducing the cost of materials, in contrast to the prior art, in that it does not have a plurality of cooling fins.
  • the second segment can continue to be formed a spacer.
  • this prevents the luminaire from being installed in a too small or too low installation space.
  • the heat sink comprises a profile body, which is formed by the first segment and the second segment.
  • the heat sink consists of this profile body.
  • the heat sink is designed such that it has no part over the entire length of the profile body except the second segment, which is located above the level. This allows a correspondingly unhindered heat radiation of the second segment over a particularly large area.
  • the heat sink is formed in one piece. This allows a particularly good heat conduction within the heat sink.
  • the heat sink is designed such that, viewed in the section, a material thickness of the first segment, starting from the central region to the right and / or to the left and / or a material thickness of the second segment, starting from the central region is reduced upward.
  • a reduced material thickness is sufficient with respect to an effective heat dissipation in the corresponding outer regions, so that this material saving is possible, at least without appreciable impairment of heat dissipation.
  • the heat sink is made of aluminum or another material which has a similarly good thermal conductivity, for example steel. This is allows a particularly even distribution of heat over the areas intended for radiation.
  • the first segment has elements for holding further components of the luminaire.
  • the elements may in particular be at least one groove.
  • the further components may be a printed circuit board on which LEDs are arranged as the light source of the luminaire and / or a primary-optic element and / or a reflector element.
  • a lighting module arrangement for a luminaire, wherein the luminous module arrangement has a cooling body according to the invention, and at least one LED, which is thermally conductively connected to the cooling body.
  • the at least one LED can be arranged via a circuit board on the first segment, preferably in the central region.
  • Such an arrangement is particularly advantageous because the heat generated in the at least one LED can be dissipated particularly effectively from the central region in a total of three directions, namely along the first segment in two lateral directions and along the second segment upwards.
  • the at least one LED is preferably arranged on the first segment on a side opposite the second segment. This allows a light output that is not adversely affected by the second segment.
  • the light module arrangement particularly advantageously has a plurality of LEDs which are arranged on the first segment along a straight line which runs in a plane which is defined by the shape of the second segment.
  • the described, particularly effective heat dissipation is thereby made possible for all LEDs along the straight line.
  • a luminaire which has a heat sink according to the invention or an inventive Lighting module arrangement.
  • the luminaire is particularly advantageously a recessed luminaire, in particular a recessed ceiling luminaire.
  • a particularly effective heat dissipation is made possible if the surface area points upward in an orientation intended for operation of the luminaire and forms an outwardly facing surface of the luminaire.
  • the lamp also has a trough-shaped luminaire housing with a bottom wall and adjoining side walls, wherein the bottom wall has a passage opening and the heat sink is inserted through the passage opening at least substantially covering in the bottom wall.
  • FIG. 1 is a schematic, perspective view of the embodiment of a heat sink according to the invention for a luminaire shown
  • Fig. 2 shows a corresponding cross section.
  • Fig. 2 shown in addition to the heat sink even more components of the lamp, which will be referred to below.
  • the heat sink has a first segment 2, which is plate-shaped, at least to a first approximation, as well as a second segment 4, which is likewise plate-shaped, at least to a first approximation.
  • first approximation plate-shaped is hereby expressed that by the shape of the relevant segment, a plane is set and the maximum distance of the surface of this segment from this level is not greater than a small percentage, for example 10% or 5% , an extension of the segment in this plane. This is based on the Fig. 2 exemplified in more detail.
  • the plate-shaped design of the first segment 2 defines a plane S1 ; Thus, that level is designated, which occupies the largest possible sectional area through the first segment 2.
  • the maximum distance a of the surface of the first segment 2 from the plane S1 is not greater than said percentage, that is, for example, not greater than 5%, of an extension L of the segment 2 in the plane S1.
  • the second segment 4 is directly connected to the first segment 2.
  • the two segments 2, 4 may be formed in one piece as a whole. This allows a particularly good heat conduction within the heat sink.
  • the connection is such that the second segment 4, when the first segment 2 is oriented horizontally, extends vertically upward at least substantially from a central region 6 of the first segment 2.
  • This orientation corresponds to the illustration in Fig. 2 ; the first segment 2 is oriented horizontally, in other words, the plane S1 is oriented horizontally.
  • the second segment 4 extends vertically upwards, so the corresponding plane S2 is oriented vertically; The second segment 4 thus forms, as it were, an upwardly protruding "fin".
  • an angle W between that plane S2 defined by the second segment 4 on the one hand and that further plane S1 defined by the first segment 2, on the other hand, is about 90 °, ie for example between 80 ° and 100 °.
  • the second segment 4 extends upwards by a "height” or by a vertical extent V.
  • this "Finn” can if necessary take other forms. This may be the case, for example, when functional ribs, tabs or grooves are desired or required.
  • the heat sink is designed such that, viewed in a vertical section through the first segment 2 and the second segment 4, with the exception of the second segment 4, it has no part which is above a level N which extends through half the vertical extension V , preferably by a quarter of the vertical extent V, is fixed.
  • this level N is drawn at a height of one quarter of the vertical extent V.
  • a clearance F is formed above the level N, with the sole exception of the second segment 4, no more parallel cooling fins extend into this area. This makes it possible that a heat radiation from the second segment 4 in the two lateral directions - as in Fig.
  • the heat sink according to the invention does not require a plurality of cooling fins arranged in parallel; This can be achieved in particular a material saving.
  • the heat sink can thus in particular have an upside-down T-shape, wherein the first segment 2 forms the top line of the T and the second segment 4 the trunk of the T's.
  • the heat sink comprises a profile body which is formed by the first segment 2 and the second segment 4.
  • the heat sink - as shown - consist of this profile body. It may be, for example, an extrusion profile.
  • a particularly large, correspondingly effective radiating surface can be achieved if the heat sink is designed in such a way that it has no part over the entire length l of the profile body with the exception of the second segment 4, which is located above the level N.
  • the heat sink is made in one piece; This allows a particularly good thermal conductivity within the heat sink.
  • the heat sink is made of aluminum or another material which has a similar good thermal conductivity, for example steel.
  • a further saving in material is made possible when viewed in the said vertical section through the first segment 2 and the second segment 4, starting from the central region 6, a material thickness of the first segment 2 starting from the central region 6 to the right and / or after on the left and / or a material thickness of the second segment 4, starting from the middle region 6, is reduced upward.
  • this is outlined as an example; starting from the central region 8, the material thickness of the first segment 2 is reduced to the left, ie in the direction of the left edge 10 of the first segment 2, from a first material thickness d1 to a second, to a lesser material thickness d2.
  • the first segment 2 elements for mounting further components of the lamp may be, for example, at least one groove 16.
  • the further components can be at least one LED 22, which is preferably arranged on a circuit board 20, the circuit board 20 being good thermally conductive, for example, via a layer of thermal compound is contacted with the heat sink.
  • the at least one LED 22 in particular via the board 20, is particularly preferably arranged on the first segment 2, specifically on a side opposite the second segment 4, that is to say with reference to the said section on the underside of the first segment 2.
  • the at least one LED 22 is arranged in the middle region 6. In this way, a particularly effective heat dissipation from the LED 22 is possible, via the first segment 2 to the right and to the left and over the second segment 4 upwards.
  • the extent L of the first segment 2 is at least five times the extent p of the board 20.
  • the extension or vertical extent V of the second segment 4 is at least twice the extent p of the circuit board 20.
  • the ratio of the extent L of the first segment 2 to the vertical extent is advantageously in the said section V between 2: 1 and 6: 1.
  • the heat sink or the light module assembly is particularly suitable for the case that a plurality of LEDs arranged along a line are provided as the light source.
  • the board 20 is designed accordingly elongated.
  • the first segment 2 for arranging the circuit board 20 on the heat sink or on the first segment 2 can the first segment 2 in particular two lateral stops 162, 164, by which a lateral securing position of the board 20 is ensured relative to the heat sink.
  • a planar surface region of the first segment 2 is preferably formed, which serves for planar connection to the circuit board 20, wherein advantageously with respect to a good thermal connection between the circuit board 20 and the planar surface region, a thermal compound is arranged.
  • a receiving groove 163, which serves to receive excess thermal paste is preferably formed in each case between this last-mentioned planar surface region and the two stops 162, 162.
  • Two further grooves 166 may be provided on the underside of the first segment 2, which serve to hold locking elements 180, which hold the board 20 upwardly pressing against the underside of the first segment 2.
  • Two further grooves 16 may be provided on the underside of the first segment 2, which serve to hold an optical element 24, which serves to influence a light emitted by the LEDs 22.
  • the optical element 24 can also have structures 242, for example in the form of ribs, for holding reflector elements 40, 42.
  • a luminaire is furthermore provided which has a heat sink according to the invention or a luminous module arrangement according to the invention.
  • the luminaire may in particular have a luminaire housing 30, which is designed, for example, trough-shaped, with a tub bottom 302 and adjoining sidewall regions 304.
  • a passage opening is provided in the tub bottom 302, into which the heat sink or the luminous module arrangement is preferably inserted in such a way that the passage opening is covered or closed by the heat sink, in particular by the first segment 2, and the second segment 4 protrudes outward with respect to the light housing 30.
  • the passage opening can take, for example, between 25% and 75% of that area which is defined by the edge of the trough bottom 302.
  • the heat sink may further comprise holding elements 28, which are designed for releasably holding the heat sink or the light module arrangement in the passage opening. This allows a simple replacement of the heat sink or the light module assembly.
  • the heat sink is particularly suitable in the case where the luminaire is a recessed luminaire, in particular a recessed ceiling luminaire.
  • the luminaire is designed such that in the intended for the operation of the lamp alignment of the surface region 8 of the first segment 2 upwards, ie towards the installation space, and thereby forms an outer surface of the lamp.
  • the second segment 4 can continue to serve advantageously as a spacer in this case. This can reduce the risk that the lamp is installed in an installation space that is too low.
  • the heat sink is not interchangeable disposed in the lamp housing, but that the lamp housing itself as such forms the heat sink by appropriate design. However, in this case, in particular the production of the second segment is associated with more effort.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (14)

  1. Corps de refroidissement pour un luminaire, comprenant :
    - un premier segment (2) au moins approximativement en forme de plaque et
    - un deuxième segment (4) au moins approximativement en forme de plaque,
    le deuxième segment (4) étant relié directement avec le premier segment (2) de façon à ce que le deuxième segment (4) s'étende, lorsque le premier segment (2) est orienté horizontalement, au globalement verticalement vers le haut à partir d'une zone centrale (6) du premier segment (2) et notamment, mesurée à partir d'une partie de la surface (8) du premier segment (2) orientée vers le haut, autour d'une extension verticale (V),
    caractérisé en ce que
    le corps de refroidissement est conçu de façon à ce que, vu en coupe verticale à travers le premier segment (2) et le deuxième segment (4), il ne comprenne, en dehors du deuxième segment (4) aucune pièce qui se trouve au-dessus d'un niveau (N) qui est défini par la moitié de l'extension verticale (V), de préférence par un quart de l'extension verticale (V).
  2. Corps de refroidissement selon la revendication 1,
    le corps de refroidissement comprenant un corps profilé qui est constitué par le premier segment (2) et le deuxième segment (4), de préférence du corps profilé.
  3. Corps de refroidissement selon la revendication 2,
    caractérisé en ce que le corps de refroidissement est conçu de façon à ce qu'il ne comprend, sur toute la longueur (I) du corps profilé, en dehors du deuxième segment (4), aucune pièce qui se trouve au-dessus du niveau (N).
  4. Corps de refroidissement selon l'une des revendications précédentes,
    le corps de refroidissement étant constitué d'une seule pièce.
  5. Corps de refroidissement selon l'une des revendications précédentes, dans lequel, vue en coupe, une épaisseur de matériau du premier segment (2) se réduit vers le haut, en partant de la zone centrale (6) vers la droite et/ou vers la gauche et/ou une épaisseur de matériau du deuxième segment (4) se réduit vers le haut en partant de la zone centrale (6).
  6. Corps de refroidissement selon l'une des revendications précédentes, constitué d'aluminium ou d'un autre matériau qui présente une conductivité thermique comparable.
  7. Corps de refroidissement selon l'une des revendications précédentes, dans lequel le premier segment (2) comprend des éléments, plus particulièrement sous la forme d'au moins une rainure (16), pour le support de composants (20, 22, 24, 26) supplémentaires du luminaire.
  8. Dispositif de module d'éclairage pour un luminaire, comprenant
    - un corps de refroidissement selon l'une des revendications précédentes et
    - au moins une LED (2) qui est reliée de manière thermo-conductrice avec le corps de refroidissement.
  9. Dispositif de module d'éclairage selon la revendication 8,
    dans lequel l'au moins une LED (22) est disposée, de préférence par l'intermédiaire d'une platine (20), sur le premier segment (2), de préférence dans la zone centrale (6), et notamment sur un côté opposé au deuxième segment (4).
  10. Dispositif de module d'éclairage selon la revendication 8 ou 9,
    avec plusieurs LED (22), qui sont disposées sur le premier segment (2) le long d'une droite (G), qui s'étend dans un plan (S2), qui est défini par la forme du deuxième segment (4).
  11. Luminaire comprenant :
    - un corps de refroidissement selon l'une des revendications 1 à 7 ou
    - un dispositif de module d'éclairage selon l'une des revendications 8 à 10.
  12. Luminaire selon la revendication 11,
    sous la forme d'un luminaire encastré, plus particulièrement un luminaire encastré dans un plafond.
  13. Luminaire selon la revendication 11 ou 12,
    qui est conçu de façon à ce que, dans le cas d'une orientation prévue pour le fonctionnement du luminaire, la zone superficielle (8) est orientée vers le haut et constitue une surface du luminaire orientée vers l'extérieur.
  14. Luminaire selon l'une des revendications 11 à 13,
    comprenant en outre :
    - un boîtier de luminaire en forme de bac avec une paroi de fond et des parois latérales soudées à celle-ci,
    la paroi de fond comprenant une ouverture de passage et le corps de refroidissement étant inséré dans la paroi de fond à travers l'ouverture de passage de manière globalement couvrante.
EP11760493.4A 2010-09-27 2011-09-26 Corps de refroidissement et agencement de module de lampe pour lampe Not-in-force EP2622258B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010041470A DE102010041470A1 (de) 2010-09-27 2010-09-27 Kühlkörper und Leuchtmodulanordnung für eine Leuchte
PCT/EP2011/066638 WO2012041797A1 (fr) 2010-09-27 2011-09-26 Corps de refroidissement et agencement de module de lampe pour lampe

Publications (2)

Publication Number Publication Date
EP2622258A1 EP2622258A1 (fr) 2013-08-07
EP2622258B1 true EP2622258B1 (fr) 2015-11-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11760493.4A Not-in-force EP2622258B1 (fr) 2010-09-27 2011-09-26 Corps de refroidissement et agencement de module de lampe pour lampe

Country Status (4)

Country Link
EP (1) EP2622258B1 (fr)
CN (1) CN103119352B (fr)
DE (1) DE102010041470A1 (fr)
WO (1) WO2012041797A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005012652U1 (de) * 2005-08-11 2005-11-10 Kotzolt, Michael Leistungs-LED-Modell
DE202008002873U1 (de) * 2008-02-29 2008-05-15 Martin, Andreas, Dipl.-Ing. Lichtmodul für Raum- und Flächenausleuchtung
CN101619842B (zh) * 2008-07-04 2011-03-23 富准精密工业(深圳)有限公司 发光二极管灯具及其光引擎
TWI385343B (zh) * 2008-07-24 2013-02-11 Advanced Optoelectronic Tech 一種光源及其被動散熱裝置
JP5304198B2 (ja) * 2008-11-24 2013-10-02 東芝ライテック株式会社 照明器具
CN201513770U (zh) * 2009-08-28 2010-06-23 扬州新世代光电照明有限公司 一种散热型led光源模组
CN201555119U (zh) * 2009-10-15 2010-08-18 苏州中泽光电科技有限公司 组合式led吊顶灯

Also Published As

Publication number Publication date
CN103119352B (zh) 2017-03-01
DE102010041470A1 (de) 2012-03-29
EP2622258A1 (fr) 2013-08-07
CN103119352A (zh) 2013-05-22
WO2012041797A1 (fr) 2012-04-05

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