EP2592335A1 - Heat dissipating cage - Google Patents

Heat dissipating cage Download PDF

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Publication number
EP2592335A1
EP2592335A1 EP20120191317 EP12191317A EP2592335A1 EP 2592335 A1 EP2592335 A1 EP 2592335A1 EP 20120191317 EP20120191317 EP 20120191317 EP 12191317 A EP12191317 A EP 12191317A EP 2592335 A1 EP2592335 A1 EP 2592335A1
Authority
EP
European Patent Office
Prior art keywords
flexible
axial tabs
branches
heat dissipation
tabs
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
EP20120191317
Other languages
English (en)
French (fr)
Other versions
EP2592335B1 (de
Inventor
Gilbert Sergent
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.)
RAM Chevilles et Fixations SAS
Original Assignee
RAM Chevilles et Fixations SAS
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 RAM Chevilles et Fixations SAS filed Critical RAM Chevilles et Fixations SAS
Priority to PL12191317T priority Critical patent/PL2592335T3/pl
Publication of EP2592335A1 publication Critical patent/EP2592335A1/de
Application granted granted Critical
Publication of EP2592335B1 publication Critical patent/EP2592335B1/de
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
    • F21V29/502—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
    • 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
    • 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
    • F21V15/02—Cages
    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/12—Flameproof or explosion-proof arrangements

Definitions

  • the present invention relates to a thermal dissipation cage intended to be installed through an insulating panel to receive a lamp.
  • One area of application is in particular that of downlights through insulated ceiling panels.
  • spots generally give off a large amount of thermal energy and the insulated ceiling panels have a wall on which is supported an insulating layer, for example glass wool. Also, the spots being embedded through an orifice made in the wall and under the glass wool, the thermal energy they produce is not easily dissipated and may cause inflammation of the wall and insulation .
  • These cages comprise a bottom and four flexible axial tabs which extend opposite one another from said bottom and opposite two by two.
  • the flexible axial tabs each have a free end of support, and the free ends of support of the flexible axial tabs are supported on the edge of the orifice, after the cage has been engaged through the orifice and carried between insulation and wall.
  • the flexible axial tabs flex and come closer to each other, while they then deviate when the free ends of support are at the wall.
  • the insulation is kept away from the wall, and the housing is adapted to receive a portion of the lamp, the side of its base, without contact with the insulation.
  • the heat dissipation cages are made of a polymer material and the heat energy produced by the lamps is important that the flexible axial tabs can flex and deviate from each other under the pressure of the insulation. As a result, the size of the dwelling is reduced and the heat energy no longer dissipates optimally.
  • a problem that arises and that aims to solve the present invention is to provide a heat dissipation cage, which not only allows a better evacuation of thermal energy but also, which retains its shape after installation and despite the fact that thermal energy produced by the lamp.
  • the present invention proposes a thermal dissipation cage intended to be installed through an insulating panel for receiving a lamp, said insulating panel having a wall having an external face opposite to an inner face and an orifice opening on both sides. to receive said lamp, said cage comprising a bottom and a plurality of flexible axial tabs extending facing each other from said bottom, the flexible axial tabs each having a free end of support, said heat dissipating cage being adapted to be installed on said inner face so that the bearing ends of said flexible axial tabs bear against said orifice of said wall, while said bottom is extended facing said orifice so as to provide a housing facing said orifice.
  • the heat dissipation cage further comprises branches pivotally mounted on said bottom, and said legs are movable between an axial position in which said branches are brought closer to each other opposite said flexible axial tabs and a radial position in which said branches are deployed around said bottom.
  • a feature of the invention lies in the implementation of branches mounted on the bottom and which, when deployed radially, further apart the insulating layer of the wall, and thus the housing. In this way, the dissipation of the thermal energy produced inside the housing is improved compared to the cages produced according to the prior art. In this way, the risks of ignition of the insulating layer are greatly reduced.
  • the heat dissipation cage comprises a first flexible link for interconnecting said branches, said first flexible link being on the one hand able to flex to allow said branches to move closer to each other. each other, and secondly to retain said branches in said radial position, when they deviate from each other.
  • the first flexible link forms a relatively simple stop means for locking the branches in a radial position, and it allows to allow their approximation during the introduction through the orifice.
  • each of said branches has a first free end
  • said first flexible link advantageously connects successively the first free ends of said branches.
  • the flexible link is divided into portions which extend respectively between two consecutive ends in which it is anchored, and the extended length of these portions must necessarily be less than the maximum distance separating two consecutive ends. This maximum distance corresponds to a position of the branches where they are located in the same plane perpendicular to the axis of symmetry of the bottom.
  • the branches are held in a position substantially inclined relative to the axis of symmetry, inverted umbrella shape as will be explained in more detail in the following description.
  • said bottom has a first connecting piece and a second connecting piece intended to be connected to said first connecting piece, said flexible axial tabs being integral with said second connecting piece, while said branches are integral with said first connecting piece. connecting piece.
  • the bottom is thus divided into two parts respectively carrying the flexible axial tabs and branches for practical manufacturing reasons. It will be observed that the heat dissipating cage can also be molded in one piece.
  • said connecting pieces are intended to be connected together by interlocking.
  • said first connecting piece has a projecting cylindrical portion, while said second connecting piece has a cylindrical recess opening opposite said flexible axial tabs, and said cylindrical portion is then intended to fit within said cylindrical recess.
  • the connecting pieces being made respectively in one piece with the branches and the flexible axial tabs in a polymer type material, the interlocking assembly is easy to implement.
  • the heat dissipating cage comprises a second flexible link for interconnecting said flexible axial tabs so as to prevent the spacing of said flexible axial tabs from each other, said second flexible link being able to flex when said flexible axial tabs are brought closer to each other.
  • the second flexible link allows to limit the spacing of the tabs when the cage is in position on the side of the inner face of the wall and the support ends are pressed around the orifice. In this way, the second flexible link flexes when the legs are close together and it is stretched when the legs apart from each other.
  • the thermal energy released during its operation is not only dissipated, but also the flexible axial tabs do not deform since they are held at a distance from each other by the flexible link.
  • each of said flexible axial tabs has two proximal flexible axial tabs, and said second flexible link connects each of said flexible axial tabs with said proximal flexible axial tabs.
  • the flexible axial tabs are successively connected to each other around the bottom of the cage so as to make free the housing formed between the axial tabs. This housing can thus receive the rear part of the lamp and its receiving base.
  • each of said flexible axial tabs has an intermediate zone located between said bottom and said free end of support, and said second flexible link is anchored in the intermediate areas of said flexible axial tabs.
  • the intermediate zones are located substantially equidistantly between the bottom and the free end of support.
  • said flexible link extends in an arc between said flexible axial tabs, and it is for example formed of a ring connecting all the intermediate zones in which it is anchored.
  • the bottom has at least one notch formed between two flexible axial tabs, said notch being closed by two flexible tabs opposite. In this way, it is easy to engage the electric power supply son of the lamp base inside the notch.
  • each of said flexible axial tabs advantageously has an external rib extending from said bottom to said free end support. This rib makes it possible not only to stiffen the flexible axial tabs but also, as will be explained in more detail in the following description, to form ramps of friction when the cage is introduced through the orifice.
  • said free end of support has fins and bearing lugs spaced axially from said fins, said fins being able to come to bear against said inner face around said orifice, while said bearing lugs bear against said external face.
  • the flexible axial tabs are close to each other and the fins escape within range of the edges of the orifice.
  • the tabs can be released and the fins come to bear around the orifice against the inner face of the wall.
  • the support pins bear against the outer face around the orifice. In this way, the cage is held in a fixed position relative to the wall.
  • the Figure 1 illustrates a ceiling insulating panel 48 and a heat sink 10 recessed therein.
  • the ceiling insulating panel 48 comprises on the one hand a plaster wall 50 having an outer face 52 and an inner face 54 and on the other hand a thermal insulator 56 of the glass wool type.
  • a circular orifice 58 has been formed in the wall 50, and it opens into the inner face 54 and the outer face 52.
  • the heat dissipating cage 10 has a first umbrella portion 11 and a second axial portion 13 which will be described firstly with reference to FIG. Figure 2 .
  • the Figure 2 illustrates in bottom view the second axial portion 13 and comprises a circular bottom 12, four flexible axial lugs 14, 16, 18, 20 diametrically opposite pairs in pairs, and a second flexible link 22 which connects them.
  • the four flexible axial tabs 14, 16, 18, 20 are angularly spaced 90 ° from each other.
  • the second axial portion 13 has a circular axis of symmetry A cutting the circular bottom 12 at its center and the four flexible tabs 14, 16, 18, 20 are substantially inclined outwardly with respect to the circular axis of symmetry A so as to form a housing 24 of generally conical shape.
  • the second axial portion 13 is molded in one piece of plastic material, for example polyamide so as to be heat resistant. Also, the axial lugs 14, 16, 18, 20 are pivotally movable at the circular bottom 12, between an equilibrium position spaced apart from the circular axis of symmetry A and a close position.
  • the flexible axial tabs 14, 16, 18, 20 respectively have a bearing end 26 and an intermediate zone 28 located substantially midway between the circular bottom 12 and the bearing end 26.
  • the flexible link of the second part 22 forms a ring which successively connects the contiguous axial tabs, precisely at their intermediate zone 28.
  • the flexible link of the second part 22 is of course molded with the cage 10, also, it forms arcs between each pair of contiguous flexible axial tabs 14, 16; 16, 18; 18, 20; 20.14.
  • each of the flexible axial tabs 14, 16, 18, 20 has a longitudinal outer rib 30 which extends from the circular bottom 12 to the free end of support 26.
  • the latter has a radial fin 32 and two axial fins 34, 36 terminated respectively by a bearing pin 38 in return, substantially parallel to the radial fin 32.
  • the circular bottom 12 has two opposite notches 40, 42 respectively located between the flexible axial tabs 20, 14 and 16, 18, and partially closed by two flexible tongues facing 44, 46. These notches 40, 42 allow, advantageously, forming hooking means of the supply son.
  • the circular bottom 12 has a bearing face 63 and an axial cylindrical recess 64 of circular symmetry emerging coaxially in the bearing face 63, outside and away from the flexible axial tabs 14, 16, 18, 20.
  • the role of the axial cylindrical recess 64 in combination with the bearing face 63 will be explained below.
  • the Figure 4 illustrates the first umbrella part 11 in a semi-open position. It comprises a first circular connecting piece 66 and four branches 68, 70, 72, 74 which extend radially from the circular connecting piece 66. Each of the branches 68, 70, 72, 74 is mounted articulated on the circular end piece 66 and has a first free end return 76. The free ends back 76 of the branches 68, 70, 72, 74 are connected together by a flexible link of first part 78.
  • the latter is divided into four identical portions 80 successively connecting the four branches 68, 70, 72, 74, two by two, 68, 70; 70, 72; 72, 74; and 74, 68.
  • Each of these portions 80 of first portion flexible link 78 comprises two flexible strands 82, 84, articulated on the one hand with respect to each other and on the other hand, respectively to the branches to which they are connected.
  • the Figure 5 illustrates the first umbrella part 11 in a folded position, where the four branches 68, 70, 72, 74, are close to each other and are oriented substantially axially, while the flexible strands 82, 84 of the portions 80 of the link flexible 78 are folded towards each other.
  • the first circular connecting piece 66 which extends projecting, opposite the branches 68, 70, 72, 74, a cylindrical portion of revolution 86 having axial ribs 88 capable of forming bearing surfaces.
  • This cylindrical part of revolution 86 is then able to come to fit forcefully, inside the axial cylindrical recess 64 shown on the Figure 3 , while the first circular connecting piece 66 is pressed against the bearing face 63 of the circular base 12 so as to secure the first umbrella portion 11 and the second axial portion 13.
  • the axial cylindrical recess 64 and the bearing face 63 of the circular bottom 12 together form a second connecting piece, and the two connecting pieces 66, 64 are intended to be connected together to form a single circular bottom. And moreover, according to an alternative embodiment of the invention, it is intended to directly connect the branches 68, 70, 72, 74, basically 12 of the second axial portion 13 shown on the Figures 2 and 3 between the flexible tabs 14, 16, 18, 20 so as to be able to mold the two parts together in one piece.
  • the heat dissipating cage 10 comprising the first umbrella part 11 integral with the second axial portion 13 is then intended to be engaged through the circular orifice 58.
  • the first umbrella part 11 first, the four branches 68, 70, 72, 74 extended in an axial position as shown in the Figure 5 is engaged through the circular orifice 58 by separating the thermal insulator 56 from the internal face 54 of the wall 50.
  • the four branches 68, 70, 72, 74 after having crossed the circular orifice 58, extend in inverted umbrella, while the first free ends return 76 bear against thermal insulation 56, until the flexible strands 82, 84, portions 82 of flexible link 78 extend rectilinearly respectively between the four branches 68, 70, 72, 74, so as to retain them in a radial position.
  • the four branches 68, 70, 72, 74 deployed and connected by the flexible link 78 in an inverted umbrella situation, form a wide range screen with respect to the second axial portion 13, and which separates the insulation thermal 56 housing 58.
  • the second axial portion 13 passes through the circular orifice 58 and the flexible axial tabs 14, 16, 18, 20 then come closer to each other to allow passing through the circular orifice 58.
  • the flexible link second portion 22 then bends to allow the approach of the flexible axial tabs 14, 16, 18, 20. It will be observed that the flexible axial tabs 14, 16, 18, 20 are elastically deformable, and that their longitudinal outer rib 30 is likely to come into friction against the edge of the circular orifice 58 during the introduction.
  • the flexible axial tabs 14, 16, 18, 20 are relaxed so that the fins 32 are pressed against the inner face 54 of the wall 50 around the circular orifice 58 and that the bearing lugs 38 axial fins 34, 36 are simultaneously bear against the opposite outer face 52 around the circular orifice 58.
  • the bearing ends 26 flexible axial tabs 14, 16, 18, 20 are perfectly integral with the wall 50 around the circular orifice 58.
  • the heat dissipating cage 10 then forms a non-deformable housing 24 inside the second axial portion 13, while the first umbrella portion 11 holds the thermal insulation 56 away from said housing 24.
  • the heat dissipating cage 10 makes it possible precisely to evacuate this thermal energy thanks to the free space that it generates precisely around the housing 24. In this way, both the thermal insulator 56 and the wall 50 do not are not damaged.
  • the housing 24 retains its shape and hence the thermal energy continues to be dissipated normally without overheating.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP12191317.2A 2011-11-08 2012-11-05 Gehäuse zur Wärmeableitung Active EP2592335B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12191317T PL2592335T3 (pl) 2011-11-08 2012-11-05 Oprawa rozpraszająca ciepło

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1160174A FR2982341B1 (fr) 2011-11-08 2011-11-08 Cage de dissipation thermique

Publications (2)

Publication Number Publication Date
EP2592335A1 true EP2592335A1 (de) 2013-05-15
EP2592335B1 EP2592335B1 (de) 2014-09-17

Family

ID=47080377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12191317.2A Active EP2592335B1 (de) 2011-11-08 2012-11-05 Gehäuse zur Wärmeableitung

Country Status (6)

Country Link
EP (1) EP2592335B1 (de)
DK (1) DK2592335T3 (de)
ES (1) ES2526332T3 (de)
FR (1) FR2982341B1 (de)
PL (1) PL2592335T3 (de)
PT (1) PT2592335E (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3011064A1 (fr) * 2013-09-24 2015-03-27 Midi Moulages Plast Dispositif de securisation destine a un luminaire encastre de type spot
GB2536280A (en) * 2015-03-13 2016-09-14 Astro Lighting Ltd A spacer
GB2570008A (en) * 2018-01-03 2019-07-10 Scolmore Int Ltd Insulation support

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108730859A (zh) * 2017-04-20 2018-11-02 杭州思文科科技有限公司 旋转调节式灯具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937617A1 (de) * 1999-08-10 2001-02-22 Industrievertretungen Reiner B Abdeckgehäuse für Einbauleuchten
DE10335515A1 (de) * 2003-07-31 2005-02-17 Norbert Volk Vorrichtung zur Herstellung eines Hohlraums
WO2008116273A1 (en) * 2007-03-28 2008-10-02 Richard Edward Barry Device for maintaining ventilation space between heat emitting light fittings or appliances and insulating material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237867B (en) * 1989-11-10 1992-09-02 Rotaflex Ltd Light fittings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937617A1 (de) * 1999-08-10 2001-02-22 Industrievertretungen Reiner B Abdeckgehäuse für Einbauleuchten
DE10335515A1 (de) * 2003-07-31 2005-02-17 Norbert Volk Vorrichtung zur Herstellung eines Hohlraums
WO2008116273A1 (en) * 2007-03-28 2008-10-02 Richard Edward Barry Device for maintaining ventilation space between heat emitting light fittings or appliances and insulating material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3011064A1 (fr) * 2013-09-24 2015-03-27 Midi Moulages Plast Dispositif de securisation destine a un luminaire encastre de type spot
EP2860445A1 (de) * 2013-09-24 2015-04-15 Moulages Plastiques du Midi Abdeckvorrichtung für eingebaute Leuchte vom Typ Strahler
GB2536280A (en) * 2015-03-13 2016-09-14 Astro Lighting Ltd A spacer
GB2536280B (en) * 2015-03-13 2017-03-29 Astro Lighting Ltd A spacer
GB2570008A (en) * 2018-01-03 2019-07-10 Scolmore Int Ltd Insulation support
GB2570008B (en) * 2018-01-03 2020-03-18 Scolmore Int Ltd Insulation support

Also Published As

Publication number Publication date
FR2982341B1 (fr) 2013-12-20
PL2592335T3 (pl) 2015-03-31
DK2592335T3 (en) 2015-01-05
FR2982341A1 (fr) 2013-05-10
PT2592335E (pt) 2014-12-12
EP2592335B1 (de) 2014-09-17
ES2526332T3 (es) 2015-01-09

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