EP2233827B1 - Eclairage extérieur doté d'un élément de conduction d'air - Google Patents

Eclairage extérieur doté d'un élément de conduction d'air Download PDF

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Publication number
EP2233827B1
EP2233827B1 EP10156988.7A EP10156988A EP2233827B1 EP 2233827 B1 EP2233827 B1 EP 2233827B1 EP 10156988 A EP10156988 A EP 10156988A EP 2233827 B1 EP2233827 B1 EP 2233827B1
Authority
EP
European Patent Office
Prior art keywords
light source
mast
air guide
guide element
air
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.)
Active
Application number
EP10156988.7A
Other languages
German (de)
English (en)
Other versions
EP2233827A3 (fr
EP2233827A2 (fr
Inventor
Klaus Vamberszky
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 EP2233827A2 publication Critical patent/EP2233827A2/fr
Publication of EP2233827A3 publication Critical patent/EP2233827A3/fr
Application granted granted Critical
Publication of EP2233827B1 publication Critical patent/EP2233827B1/fr
Active 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
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • 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
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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 an outdoor lamp with a light source and a mast, wherein the light source is arranged on an upper portion of the mast, and with a heat sink, which is thermally connected to the cooling of the light source with the light source.
  • Such an outdoor lamp is known in the form of a street lamp, as in Fig. 5 outlined in side view.
  • the luminaire has a light source 20, which is arranged in a lamp head 120.
  • the lamp head 120 and thus the light source 20 are arranged on an upper portion of a mast 40.
  • Such a street lamp requires relatively high lumen packets and - in the case of light-emitting diodes (LEDs) - therefore very many LEDs.
  • the light source so for example the LEDs in question, generate comparatively much heat during operation; this must be dissipated via suitable devices, because excessive heat generation can damage the light source and limit its effectiveness.
  • For cooling the light source it is known to provide a heat sink which is thermally connected to the light source.
  • a luminaire with a light source is known, which is arranged on an upper region of a mast.
  • the lamp has a heat sink. Inside the mast, an air flow forms, which leads past the heat sink.
  • Another similar lamp is from the CN 201093282 Y known.
  • a luminaire is known with a mast having an air inlet in a lower region and an air outlet in an upper region.
  • the present invention is based on the object to design a generic lamp so that a particularly effective cooling of the light source is possible.
  • an outdoor lamp having a light source and a mast, wherein the light source is disposed at an upper portion of the mast is.
  • the outdoor lamp has a heat sink, which is thermally connected to the cooling of the light source with the light source.
  • the outdoor lamp has at least one arranged on the mast air guide, which is arranged and designed such that it transforms a flowing air to the air guide in air vortices that move after a detachment from the air guide in the direction of the heat sink.
  • the cooling body flows around turbulently, so that a heat dissipation from the heat sink is particularly effectively supported in an environment of the heat sink.
  • the cooling body has cooling ribs and the air guiding element is arranged and designed in such a way that the air vortices move in the direction of cooling ribs. Since the surface of the heat sink in the region of the cooling fins is particularly large, the turbulent flow can have a particularly effective cooling here.
  • the cooling fins are arranged opposite one another with respect to the mast of the light source or, viewed from the light source, arranged to the right and left of the longitudinal axis of the mast.
  • the cooling fins can be arranged relatively close to the longitudinal axis of the mast, so that also the at least one air guide element can be arranged relatively close to the mast.
  • An upper and / or lower boundary of the cooling ribs advantageously forms an outer boundary of the outdoor light.
  • an upwardly directed turbulent air flow through the cooling fins can be achieved particularly effectively and thus a particularly effective cooling.
  • the air guide is attached to the outside of an outer surface of the mast; In this case, it has a concavely curved surface for influencing the air flowing to the air guide element.
  • a concavely curved surface for influencing the air flowing to the air guide element.
  • the concavely curved surface advantageously has an upper end region which has an average angle of inclination relative to the horizontal, which between 70 ° and 90 °, preferably between 80 ° and 90 °. This makes it possible to achieve an upward movement of the vortex after its detachment from the air guide particularly well.
  • the concave curved surface extends advantageously over a height of at least 10 cm. Further advantageously, the vertical extension of the concave curved surface is at least as large as half the vertical extent of the heat sink, preferably at least as large as the vertical extent of the heat sink.
  • the horizontal extent of the concavely curved surface is at least 10 cm or at least a quarter of its vertical embankment.
  • the vertical distance between the air guide and the heat sink between the single and ten times the vertical extent of the heat sink.
  • the air guide element is rotatable, preferably arranged rotatably about a vertical axis on the mast. In this way, the effectiveness of the air guide element can be increased with a change in the direction of flow.
  • the air guide element is designed such that the air vortex periodically detach from the air guide element. This also contributes to increasing efficiency.
  • a corresponding outdoor light in which the light source comprises a plurality of LEDs is particularly advantageous because the cooling of the light source is particularly important in this case.
  • Fig. 1 is outlined in a side view a first embodiment of an outdoor lamp according to the invention.
  • the lamp may be, for example, a street lamp.
  • the outdoor lamp has a - not shown in detail in the figure - light source 2, which may for example comprise a plurality of LEDs. It is preferably provided that the light source 2 consists of several LEDs.
  • the light source 2 may be arranged in or on a lamp head 12.
  • the outdoor lamp has a mast 4, wherein the light source 2 is arranged at an upper region of the mast 4.
  • the light source 2 is arranged in the lamp head 12 and the lamp head 12 in an upper region of the mast 4.
  • the lamp head 12 may be placed on the upper end portion of the mast 4.
  • the outdoor lamp has a heat sink 10 which is thermally connected to the light source 2 for cooling the light source 2.
  • the heat sink 10 can In particular, have cooling fins 14.
  • the cooling fins 14 may have or be formed of vertically oriented lamellar surfaces.
  • the cooling fins 14 represent part of the lamp head 12.
  • the cooling fins 14 may be provided on a rear side and / or on a circumference of a housing of the lamp head 12.
  • the cooling fins 14 preferably extend to the underside and up to the top of the housing of the lamp head 12, so that an effective vertical flow through the cooling fins 14 can take place.
  • Fig. 1 sketched it can be provided that the cooling fins 14 are arranged with respect to the mast 4 of the light source 2 opposite.
  • Fig. 2 are exemplified cooling fins 14 in a corresponding plan.
  • At least one air guiding element 6 is arranged on the mast 4.
  • the at least one air guiding element 6, 6 ' is fastened on the outside to an outer surface of the mast 4.
  • the at least one air guiding element 6, 6 ' can be arranged below the heat sink 10.
  • the air guide element 6, 6 ' is arranged on the mast 4 such that the (imaginary) connecting line between an upper end region of the air guide element 6, 6' and the heat sink 10 or the cooling fins 14 forms an angle with the vertical which is not greater than 40 °, more preferably not greater than 20 °.
  • the at least one air guide element 6, 6 ' is arranged and designed such that it transforms an air flowing into the air guide element 6, 6' into air vortexes 8, which move toward the heat sink 10 after being detached from the air guide element 6, 6 '.
  • Cooling of the light source 2 is particularly effective when the heat sink 10 has cooling fins 14 and the at least one air guide element 6, 6 'is arranged and configured in such a way that the air vortexes 8 move in the direction of cooling fins 14.
  • the air guide element 6, 6 ' has a concavely curved surface 16 for influencing the air flowing to the air guide element 6, 6'.
  • the curved surface 16 is curved about a horizontal axis.
  • a vertical section through the surface 16 therefore preferably has a concave cut line.
  • this curved surface 16 may be formed by a correspondingly bent sheet metal.
  • the concave curved surface 16 includes an upper end portion having an average angle of inclination to the horizontal, which is between 70 ° and 90 °, preferably between 80 ° and 90 °.
  • the vertical extent of the curved surface 16 is preferably at least 10 cm. This is advantageous in terms of air vortex formation.
  • the vertical extent of the concave curved surface 16 is at least as large as half the vertical extent of the heat sink 10 and the cooling fins 14.
  • the vertical extent of the curved surface 16 is at least as large as the vertical extent of the Heatsink 10 and the cooling fins 14th
  • the horizontal extent of the concave curved surface 16 may for example be at least 10 cm or at least a quarter of its vertical extent.
  • the at least one air guiding element 6, 6 ' is rotatably arranged on the mast 4. In this way, a high efficiency can be obtained in a change in the direction of flow, so for example when changing the mean wind direction.
  • the air guide element 6, 6 ' is designed such that the air vortices periodically detach from the air guide element 6, 6'.
  • FIGS. 3 and 4 is sketched another embodiment, wherein Fig. 4 shows a sketchy view from above.
  • the reference numerals are used accordingly.
  • the cooling fins 14 are provided in a side region of the heat sink 10 here.
  • the cooling fins 14 are arranged to the right and left of the longitudinal axis of the mast 4. Accordingly, the at least one air guiding element 6, 6 'can also be arranged laterally on the mast 4.
  • the at least one air guiding element 6, 6 ' is formed by "vortex-separating baffles” or “deflecting plates” attached to the mast 4, which ensure that vortices form periodically when the mast 4 flows around, and of these Release metal sheets so that a higher flow velocity is achieved. If these deflector plates are now formed in a clear geometric relationship to the cooling ribs 14 of the heat sink 10, the effect increases.

Landscapes

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

Claims (12)

  1. Luminaire extérieur, comportant
    - une source lumineuse (2),
    - un mât (4), la source lumineuse (2) étant disposée dans une partie supérieure du mât (4), et
    - un corps de refroidissement (10) qui, pour le refroidissement de la source lumineuse (2), est relié thermiquement à la source lumineuse (2),
    - au moins un élément de guidage d'air (6, 6'), qui est disposé sur le mât (4) et qui est agencé et réalisé de telle sorte qu'il transforme l'air affluant sur l'élément de guidage d'air (6, 6') en tourbillons d'air (8) qui après s'être détachés de l'élément de guidage d'air (6, 6') se déplacent vers le corps de refroidissement (10),
    caractérisé en ce que
    l'élément de guidage d'air (6) est fixé à l'extérieur sur une surface extérieure du mât (4) et comporte une surface (16) à courbure concave pour influencer l'air affluant sur l'élément de guidage d'air (6).
  2. Luminaire extérieur selon la revendication 1, dans lequel le corps de refroidissement (10) comporte des nervures de refroidissement (14), et l'élément de guidage d'air (6, 6') est disposé et réalisé de telle sorte que les tourbillons d'air (8) se déplacent vers les nervures de refroidissement (14).
  3. Luminaire extérieur selon la revendication 2, dans lequel les nervures de refroidissement (14) sont disposées en vis-à-vis par référence au mât (4) de la source lumineuse (2), ou dans lequel les nervures de refroidissement (14) - considérées à partir de la source lumineuse (2) - sont disposées à droite et à gauche de l'axe longitudinal du mât (4).
  4. Luminaire extérieur selon la revendication 2 ou 3, dans lequel une délimitation supérieure et/ou inférieure des nervures de refroidissement (14) forme une délimitation extérieure du luminaire extérieur.
  5. Luminaire extérieur selon l'une quelconque des revendications précédentes, dans lequel la surface (16) à courbure concave comporte une zone d'extrémité supérieure qui présente un angle d'inclinaison médian par rapport à l'horizontale, lequel mesure entre 70° et 90°, de préférence entre 80° et 90°.
  6. Luminaire extérieur selon l'une quelconque des revendications précédentes, dans lequel la surface (16) à courbure concave s'étend sur une hauteur d'au moins 10 cm.
  7. Luminaire extérieur selon l'une quelconque des revendications précédentes, dans lequel la dimension verticale de la surface (16) à courbure concave est au moins aussi grande que la moitié de la dimension verticale du corps de refroidissement (10), de préférence au moins aussi grande que la dimension verticale du corps de refroidissement (10).
  8. Luminaire extérieur selon l'une quelconque des revendications précédentes, dans lequel la dimension horizontale de la surface (16) à courbure concave mesure au moins 10 cm ou au moins un quart de sa dimension verticale.
  9. Luminaire extérieur selon l'une quelconque des revendications précédentes, dans lequel la distance verticale entre l'élément de guidage d'air (6, 6') et le corps de refroidissement (10) mesure entre une fois et 10 fois la dimension verticale du corps de refroidissement (10).
  10. Luminaire extérieur selon l'une quelconque des revendications précédentes, dans lequel l'élément de guidage d'air (6, 6') est monté rotatif sur le mât (4), de préférence de manière à pouvoir tourner autour d'un axe vertical.
  11. Luminaire extérieur selon l'une quelconque des revendications précédentes, dans lequel l'élément de guidage d'air (6, 6') est réalisé de telle sorte que les tourbillons d'air (8) se détachent périodiquement de l'élément de guidage d'air.
  12. Luminaire extérieur selon l'une quelconque des revendications précédentes, dans lequel la source lumineuse (2) comporte plusieurs diodes électroluminescentes.
EP10156988.7A 2009-03-20 2010-03-19 Eclairage extérieur doté d'un élément de conduction d'air Active EP2233827B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009014063A DE102009014063A1 (de) 2009-03-20 2009-03-20 Außenleuchte mit Luftleitelement

Publications (3)

Publication Number Publication Date
EP2233827A2 EP2233827A2 (fr) 2010-09-29
EP2233827A3 EP2233827A3 (fr) 2014-05-14
EP2233827B1 true EP2233827B1 (fr) 2015-08-12

Family

ID=42115552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10156988.7A Active EP2233827B1 (fr) 2009-03-20 2010-03-19 Eclairage extérieur doté d'un élément de conduction d'air

Country Status (2)

Country Link
EP (1) EP2233827B1 (fr)
DE (1) DE102009014063A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012222184A1 (de) * 2012-12-04 2014-06-05 Zumtobel Lighting Gmbh Leuchte mit Luftleitflächen
CN103953880B (zh) * 2014-05-06 2016-05-18 宁波荣华铸造有限公司 一种单件式强化散热的led路灯灯具

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705300A (en) * 1971-04-22 1972-12-05 Gen Electric Luminaire
US4658338A (en) * 1985-07-03 1987-04-14 Quartzcolor Ianiro S.P.A. Lighting projectors with an intensified and accelerated air flow cooling system for photographic and motion picture studios
JP2001349095A (ja) * 2000-06-09 2001-12-21 Matsushita Electric Works Ltd ポール
US20060250803A1 (en) * 2005-05-04 2006-11-09 Chia-Yi Chen Street light with heat dispensing device
US7798684B2 (en) * 2007-04-06 2010-09-21 Genlyte Thomas Group Llc Luminaire system with thermal chimney effect
CN201093282Y (zh) * 2007-08-31 2008-07-30 倪亮 道路照明装置
DE202008000360U1 (de) * 2008-01-09 2008-05-21 Käppel, Volker Leuchte mit einem Leuchtgehäuse in Form eines Hohlprofils
DE202008003496U1 (de) * 2008-03-10 2008-05-08 Aeon Lighting Technology Inc., Chung-Ho City LED-Straßenlampe

Also Published As

Publication number Publication date
EP2233827A3 (fr) 2014-05-14
EP2233827A2 (fr) 2010-09-29
DE102009014063A1 (de) 2010-09-23

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