EP2773306B1 - Leuchte, insbesondere operationsleuchte - Google Patents

Leuchte, insbesondere operationsleuchte Download PDF

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Publication number
EP2773306B1
EP2773306B1 EP20120784544 EP12784544A EP2773306B1 EP 2773306 B1 EP2773306 B1 EP 2773306B1 EP 20120784544 EP20120784544 EP 20120784544 EP 12784544 A EP12784544 A EP 12784544A EP 2773306 B1 EP2773306 B1 EP 2773306B1
Authority
EP
European Patent Office
Prior art keywords
lamp
recesses
lamp according
housing
flow
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
EP20120784544
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2773306A1 (de
Inventor
Hermann Hauschulte
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.)
Trilux Medical GmbH and Co KG
Original Assignee
Trilux Medical GmbH and Co KG
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 Trilux Medical GmbH and Co KG filed Critical Trilux Medical GmbH and Co KG
Publication of EP2773306A1 publication Critical patent/EP2773306A1/de
Application granted granted Critical
Publication of EP2773306B1 publication Critical patent/EP2773306B1/de
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
    • 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
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • 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
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0088—Ventilating systems
    • 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
    • F21W2131/20—Lighting for medical use
    • F21W2131/205—Lighting for medical use for operating theatres

Definitions

  • the invention relates to a luminaire having a luminaire housing and a main emission direction of light generated by means of the luminaire.
  • Such lights are known.
  • Surgical lights used in the air space between TAV ceiling and operating table, form a flow resistance with a rear leeward in the flow direction, occur at the turbulence of the air flowing around the lamp.
  • the necessarily sterile environment of the operating table can be sensitively disturbed, particles, disease germs and the like on the floor side and / or from the surroundings of the operating table.
  • the DE 43 03 192 A1 discloses a lighting arrangement comprising a rotatable center light having one or more lights and a fine air filter through which a sterile pleasure current flowing to the light is directed;
  • the object of the invention is to provide a generic lamp, in particular surgical lamp, which causes at least a lower turbulence.
  • the stated object is achieved by the Characteristics of claim 1 solved. Advantageous developments are described in the subclaims.
  • the stated object is already achieved in that the lamp housing to reduce a volume of a negative pressure zone of the displacement flow in the flow direction thereof behind the lamp housing on the outside has a plurality of trough-like depressions.
  • a laminar boundary layer laminar in itself with a substantially laminar air flow is converted into a turbulent boundary layer around the luminaire housing.
  • This can be attributed, inter alia, to a formation of negative pressure in the depressions in passing air.
  • the air flow is guided closer to the lamp housing.
  • the volume of the negative pressure zone of the displacement flow in the flow direction behind the lamp housing of the turbulent boundary layer is reduced.
  • the negative pressure zone of the displacement flow downstream of the luminaire housing can also be described as a leeward zone.
  • Such recesses are generally and in particular in their training as kugelkalotten shame depressions referred to as dimples. These dimples or depressions are arranged adjacent to one another, for example, on golf balls, this being referred to as a "dulled" surface.
  • the wind pressure or dynamic pressure on the luminaire housing may be reduced. This reduction can be up to 50%.
  • the laminar flow can be slowed down less in the region of the lamp housing or in the flow direction behind the lamp housing and can thus over a greater distance behind the lamp housing as displacement flow serve.
  • the flow velocity of the displacement air required for displacing the circulating air in the operating area can thus be reduced, which in turn is perceived as pleasant by the surgeons working in the operating theater area.
  • a reduction in the flow rate of the displacement air can reduce the danger of these operators having a cold during their work in the operating theater area.
  • the recess may have an edge-free, smooth inner surface. Otherwise, undesirable turbulences can easily arise, which can additionally swirl the incoming air.
  • the depressions are free of additional internal surface structures as dimples.
  • the recesses have a smooth inner surface.
  • the depressions are empty as dimples, ie free of devices arranged in them.
  • the opening edge, which forms the recess with the outside of the housing rounded.
  • the depressions can be distributed over the entire outer side of the lamp housing.
  • the recesses are provided at the areas of the outer side of the lamp housing, which are arranged facing at least with a direction component counter to the main emission direction.
  • at least the areas of the outside of the luminaire housing which are arranged in the vacuum zone during operation are dulled, ie completely covered with the depressions or dimples.
  • the depressions can also be in the areas of the outside perpendicular to the Main emission can be arranged.
  • the recesses are arranged at least approximately regularly or evenly distributed on the lamp housing.
  • the recesses may be equally spaced from each other or adjacent to each other.
  • the number of dimples, which are arranged on circumferential annular regions of the same axial extension of the housing be the same in each case.
  • the depressions can be arranged on the outside of the lamp housing according to the principle of a maximum distribution density.
  • a possible area-covering arrangement of the recesses may be provided on the outside of the lamp housing.
  • a surface coverage that is, the area ratio of the recesses in relation to the total outer surface of the outside of the lamp housing provided for the wells, more than 50%, preferably more than 60%, more than 70% or more than 85% may be provided.
  • the luminaire according to the invention can have a larger outside than the golf ball provided for the recesses, far more recesses, for example 1000 or more recesses, can be provided.
  • the luminaire according to the invention can be provided with an equal or even greater density of depressions as in the case of golf balls. However, it may also be provided a lower recess density, wherein the wells may have correspondingly larger opening profiles than the golf ball.
  • substantially fewer recesses in particular less than 50, advantageously less than 30 or 20 recesses, are preferably provided on the outside of the luminaire housing on a luminaire.
  • a plurality of wells may also be less than 20 wells.
  • at least five recesses are provided. The possible optimal number depends, among other things, on flow conditions, geometric conditions and conditions, such as area occupation, opening edge profile, distribution and diameter of the depressions.
  • the recesses are arranged symmetrically to a central axis of the lamp housing, in particular symmetrically to the main emission direction.
  • at least the lamp housing of the lamp is formed axially symmetrical to the central axis.
  • the main emission direction is parallel to the central axis.
  • the depressions can also be arranged asymmetrically with respect to the center axis of the luminaire housing, in particular in a partial area or in a plurality of partial areas of the outer surface of the luminaire housing provided for the depressions. As a result, for example, a certain asymmetric to the central axis vacuum zone can be adjusted.
  • the depressions may each have an opening with a round, in particular circular or oval, or polygonal opening edge.
  • the recesses may each have a spherical cap-like interior.
  • the opening edge may preferably take into account the Spherical distortion due to the curvature of space of the lamp housing to the central axis of the recess may be asymmetrical.
  • the luminaire housing can be designed to be spherical-cap-like to hemispherical or spherical segment-like, at least in the regions of its outer side provided for the depressions.
  • the luminaire housing can have a cutting plane provided as a light exit surface.
  • the lamp can be formed monoreflector.
  • FIG. 1 a lamp 1 'according to the prior art, in Figures 2 . 3a and 3b in each case one embodiment of a luminaire 1 according to the invention or a section A thereof is shown.
  • FIG. 4 is a surgical field F with here two of the lights 1 according to the invention FIG. 2 shown.
  • the reference numerals designating the components of the luminaire 1 'according to the prior art are additionally given a superscript provided.
  • the lamp 1, 1 'as a surgical light for use in rooms with low-turbulence, ie substantially laminar displacement flow V (TAV ceilings) is formed, as exemplified in FIG. 4 shown.
  • the luminaire 1, 1 ' has a luminaire housing 2, 2' and radiates generated light in a main emission direction h.
  • the flow direction s of the displacement flow V parallel to the main radiation direction h.
  • the luminaire housing 2 of the lamp 1 according to the invention in its embodiments according to the Figures 2 . 3 and 4 on its outer side 3 a plurality of so-called. Dimples, trough-like depressions 4 each with a smooth edge-free inner surface, while the housing 2 'of the lamp 1' according to the prior art in FIG. 1 is provided with a smooth outer side 3 '.
  • an interface layer 5, 5' with laminar or at least low-turbulence flow forms. If the laminar displacement flow encounters the outer side 3 of the luminaire 1 provided with recesses, then due to the depressions 4, a boundary layer 5 which is thinner compared with the boundary layer 5 'in a luminaire 1' without recesses forms turbulence (not shown).
  • This situation is schematic in Figures 1 and 2 represented, wherein the boundary layer 5 'in a conventional lamp 1' according to FIG. 1 a thickness a 'greater than the thickness a of the boundary layer 5 of the luminaire 1 according to the invention FIG. 2 is.
  • the boundary layer 5 hugs in the inventive lamp 1 due to the provided wells 4 closer to the outside 3 of the lamp 1 at.
  • FIG. 4 is purely schematic and example giving the surgical field F with operating table T shown, above which a TAV cover D for dispensing the germ-free displacement flow V is arranged. Between operating table T and TAV ceiling D here are two lights 1 according to the invention FIG. 2 arranged to illuminate the operating table T, wherein the two lights 1 are flowed around by the not specifically drawn displacement flow here.
  • the area distribution of the recesses 4 on the outside 3 have a direct effect on the thickness a of the boundary layer 5 and the length 1 of the vacuum zone Z, ie the larger the area occupancy, the lower the thickness a of the boundary layer 5 and the length 1 of the vacuum zone Z . Therefore
  • the recesses 4 here have a spherical cap-like shape with a circular opening edge 6, so that the effect caused by the recesses 4 occurs independently of the direction in which the displacement flow V flows through the recesses 4.
  • the recesses 4 in the embodiments of the lamp 1 according to the enlarged sections A of the outside 3 in the FIGS. 3a and 3b a polygonal opening edge 6, wherein the opening edge 6 of the lamp 1 according to FIG. 3a a pentagonal shape and the opening edge 6 of the lamp 1 according to FIG. 3b have a hexagonal shape to form a honeycomb-like structure without gussets.
  • the depressions 4 are distributed regularly in all embodiments of the lamp 1 according to the invention. They are provided only on the parts of the outer side 3 of the luminaire housing 2, which have a directional component h with respect to the main emission direction h, wherein the luminaire housing 2 in these parts has a kugelkalotten shame shape with a central axis m parallel to the main emission direction h. Furthermore, the recesses are arranged in a spherical symmetry, that is to say here in an axisymmetric manner with respect to the main emission direction h.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP20120784544 2011-11-03 2012-10-30 Leuchte, insbesondere operationsleuchte Not-in-force EP2773306B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011085728A DE102011085728A1 (de) 2011-11-03 2011-11-03 Leuchte, insbesondere Operationsleuchte
PCT/EP2012/071466 WO2013064490A1 (de) 2011-11-03 2012-10-30 Leuchte, insbesondere operationsleuchte

Publications (2)

Publication Number Publication Date
EP2773306A1 EP2773306A1 (de) 2014-09-10
EP2773306B1 true EP2773306B1 (de) 2015-04-29

Family

ID=47177970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120784544 Not-in-force EP2773306B1 (de) 2011-11-03 2012-10-30 Leuchte, insbesondere operationsleuchte

Country Status (5)

Country Link
US (1) US20140293622A1 (zh)
EP (1) EP2773306B1 (zh)
CN (1) CN103930083B (zh)
DE (1) DE102011085728A1 (zh)
WO (1) WO2013064490A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014004922B3 (de) 2014-04-07 2015-03-12 Innovations-Transfer Uphoff Gmbh &.Co.Kg Laminarisatorpassagevorrichtung
US9895202B2 (en) 2015-07-01 2018-02-20 Sld Technology, Inc. Airflow-channeling surgical light system and method
US10775037B2 (en) 2015-07-01 2020-09-15 Sld Technology, Inc. Airflow-channeling surgical light system and method
US9671100B2 (en) * 2015-07-01 2017-06-06 Kevin Joseph Schreiber Airflow-channeling surgical light system and method
CN106678966A (zh) * 2016-12-26 2017-05-17 殷晓冬 低噪声模块化空气净化系统
US11408170B2 (en) * 2019-02-06 2022-08-09 Flexible OR Solutions LLC Universal pre-fabricated operating room ceiling system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303192A1 (de) * 1993-02-04 1994-08-11 Alois Rieth Beleuchtungsanordnung mit sterilem Luftstrom für ein Operationsfeld
DE9317671U1 (de) * 1993-11-18 1994-02-24 Delma Elektro- Und Medizinische Apparatebau Gmbh, 78532 Tuttlingen Operationsleuchte
FR2758180A1 (fr) * 1997-01-08 1998-07-10 Martine Demaine Installation de ventilation a flux laminaire unidirectionnel
US6481872B1 (en) * 1998-10-22 2002-11-19 Koito Industries, Ltd. Astral lamp
CN2397359Y (zh) * 1999-11-30 2000-09-20 上海医疗器械五厂 一种适用于洁净手术室的手术无影灯灯头结构
DE10030399A1 (de) * 2000-06-21 2002-01-03 Nickel Gmbh Heinrich Luftkühlungseinrichtung von Reinräumen, insbesondere Operationsräumen
JP3920040B2 (ja) * 2001-04-10 2007-05-30 株式会社小糸製作所 車両用灯具ならびにそのランプボディの射出成形用金型および製造方法
DE20116113U1 (de) * 2001-10-01 2002-01-10 Schulte, Wolfgang, 40229 Düsseldorf Effekt-Leuchte
DE10316506A1 (de) * 2003-04-09 2004-11-18 Schott Glas Lichterzeugende Vorrichtung mit Reflektor
US7048425B2 (en) * 2003-09-29 2006-05-23 Dialight Corporation LED signal with side emitting status indicators

Also Published As

Publication number Publication date
CN103930083A (zh) 2014-07-16
CN103930083B (zh) 2016-01-20
US20140293622A1 (en) 2014-10-02
DE102011085728A1 (de) 2013-05-08
EP2773306A1 (de) 2014-09-10
WO2013064490A1 (de) 2013-05-10

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