EP1847772A1 - Lampe médicinal - Google Patents

Lampe médicinal Download PDF

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Publication number
EP1847772A1
EP1847772A1 EP07013913A EP07013913A EP1847772A1 EP 1847772 A1 EP1847772 A1 EP 1847772A1 EP 07013913 A EP07013913 A EP 07013913A EP 07013913 A EP07013913 A EP 07013913A EP 1847772 A1 EP1847772 A1 EP 1847772A1
Authority
EP
European Patent Office
Prior art keywords
housing
lamp according
medical lamp
hood
rear side
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.)
Withdrawn
Application number
EP07013913A
Other languages
German (de)
English (en)
Inventor
Manfred Scholz
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.)
Berchtold GmbH and Co KG
Original Assignee
Berchtold Holding GmbH
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 Berchtold Holding GmbH filed Critical Berchtold Holding GmbH
Publication of EP1847772A1 publication Critical patent/EP1847772A1/fr
Withdrawn legal-status Critical Current

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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
    • F21V29/70—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
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/40—Hand grips
    • F21V21/403—Hand grips for operation or dentist lamps
    • 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
    • F21V29/15—Thermal insulation
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/804—Surgical or dental spotlight

Definitions

  • the present invention relates to a medical lamp, in particular a surgical lamp, having a closed luminaire housing which has a front side, a rear side and a peripheral side connecting the front and rear sides, wherein at least one luminous means and at least one reflector are provided in the luminaire housing.
  • Such medical lights are generally known and must be flexibly adjustable during a medical examination or a medical procedure in order to ensure optimum illumination. Furthermore, hygiene plays a crucial role in such luminaires, i. On the one hand, the luminaires must be easy and safe to clean. On the other hand, it is desirable if the luminaires are optimized in terms of flow, in particular if they are operated under a Zu Kunststoffdecke that generates a laminar air flow to prevent a particle or germ entry in the area of the surgical site.
  • the solution according to the invention ensures that the luminaire can be handled without difficulty, since it does not heat up on its rear side, so that medical personnel could burn themselves if the housing were touched.
  • the luminaire according to the invention ensures that the lift arising at the rear of the housing is minimized due to the heat generated in the housing, so that a laminar flow above the luminaire housing is not adversely affected.
  • the housing can have heat insulation on the inside on its rear side. In this way, the heat output from the back of the housing is reduced to the outside.
  • thermal insulation may be formed, for example, by providing insulating material or shielding elements.
  • the housing may be formed on its back at least in sections as a multi-shell housing. This also results in a thermal insulation, which reduces the heat output from the back of the housing to the outside.
  • a multi-shell housing the heat output from the back of the housing can be reduced to the outside so that the housing has a surface temperature of only about 30 ° C at its rear.
  • the multi-shell housing has an outer hood and an inner hood, which in particular include a closed air volume.
  • the outer hood of the housing form its back and the inner hood can separate a closed or substantially closed volume of air within the housing to reduce the heat output from the back of the housing to the outside.
  • the outer hood made of plastic and the inner hood made of metal for example aluminum. Due to the comparatively low thermal conductivity, plastic is suitable as material for the outer hood, which in this case can also be produced inexpensively, for example by deep-drawing.
  • the inner hood is made of metal, on the one hand, this improves the electrical shielding of the luminaire.
  • the inner hood can then be thermally conductively connected to other components of the lamp, which cause heat dissipation from the lamp or cooling the lamp.
  • the inner hood to be attached to an annular frame made of metal, in particular of aluminum, heat-conducting.
  • an annular frame made of metal, in particular of aluminum, heat-conducting In this way, on the one hand, the cooling effect described above is achieved, on the other hand, this also improves the shielding effect.
  • a component of the luminaire which is not arranged on the rear side of the housing, may be formed as a cooling rib.
  • a cooling of the lamp is effected, but without disturbing the heat emitted by the cooling fin, a laminar air stream impinging on the rear side of the luminaire housing would be disturbed.
  • the frame and / or the cooling fin is or are formed as an extruded profile, which is bent into a circular ring.
  • the cooling rib seen in cross-section may have a web-shaped portion, at the end of a bead-like widening is provided. In this way, the widening of a circumferential, thickened edge is formed, which can be particularly good grip.
  • Fig. 1 shows an example of a medical lamp, a surgical lamp 10 which is pivotally mounted on a support arm 12, not shown.
  • the luminaire has a closed housing without air inlet or outlet openings, which has a front side 14, a rear side 16 and a peripheral side 18 connecting the front side 14 and the rear side 16.
  • Inside the lamp several bulbs 20 are provided which illuminate a surgical field via a parabolic reflector 22.
  • the bulbs are adjustable within the lamp in a known manner so that a focus and a size adjustment of the light field can be effected.
  • Reference numeral 24 denotes a heat filter.
  • the housing of the surgical lamp 10 comprises an outer hood 26 made of deep-drawn plastic, which is connected to an annular frame 28 which forms the peripheral wall of the lamp.
  • the housing On the front side 14 of the lamp, the housing is formed by a transparent glass plate 30, in the middle of which a handle 32 is arranged, with which the light field size can be varied in a known manner.
  • the housing of the operating light 10 as a connecting element between the glass plate 30 and the frame 28, a likewise annular extruded profile made of aluminum, which is designed as a cooling fin 34.
  • the cooling fin 34 rotates 360 ° and has a vertical downward, i. extending parallel to the handle 32 web-shaped portion 36, at the end or bottom of a bead-like widening 38 is provided.
  • the cooling fin 34 which is arranged on the front side 14 of the lamp housing and which does not extend radially beyond the outer circumference of the housing or the extruded profile 28.
  • a further means for reducing the heat output from the back of the housing this is Hoschalig in the region of the outer hood 26 and bivalves formed in the concrete embodiment shown.
  • a second, inner hood 40 is provided inside the housing, which is made of aluminum and which includes a closed air volume 42 between the outer hood 26 and the inner hood 40.
  • the inner hood 40 is thermally conductively connected to the extruded profile 28 at its lower peripheral edge. Between the inner hood 40 and the outer hood 26, a thin air gap is formed, which extends over the entire circumference of the outer hood 26 and only in the central region of the lamp, in which the outer hood 26 has a slightly convex curvature, slightly widened. As further shown in FIG. 1, portions of the reflector 22 are attached to the inner hood 40.
  • Fig. 1 The evolved during operation in the lamp heat flow is indicated in Fig. 1 with arrows, with high temperatures are arranged with thick arrows and lower temperatures with thin arrows.
  • the heat output from the outside of the housing by convection is indicated by thin, wavy arrows.
  • arranged in the lamp body illuminant 20 generates heat which rises in the interior of the reflector and is deflected by the inner hood 40 to the outside.
  • the inner hood 40 above the luminous means 20 has a bell-shaped deflection element 41 whose concave depression is directed in the direction of the rear side of the luminaire 16. This prevents unwanted turbulence inside the lamp.
  • the hot air flow within the lamp housing which has been directed radially outwards by the deflecting element 41, then flows along the inside of the inner hood 40 in the direction of the extruded profile 28. Subsequently, the already cooling air flows over the circulating cooling rib 34 and cools continue from here. The air then flows through passage openings in the interior of the reflector 22 and there in the direction of the light bulb 20 due to the heat flow, which generates this.
  • the air volume 42 between the outer hood 26 and the inner hood 40 forms a thermal insulation, so that the heat emitted by the back 16 of the housing is only thermal is low and sets a temperature of only about 30 ° C at the back 16 of the housing.

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)
EP07013913A 2006-03-27 2007-03-14 Lampe médicinal Withdrawn EP1847772A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006014003A DE102006014003A1 (de) 2006-03-27 2006-03-27 Medizinische Leuchte
EP07005276A EP1840456A1 (fr) 2006-03-27 2007-03-14 Lampe médicale

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP07005276A Division EP1840456A1 (fr) 2006-03-27 2007-03-14 Lampe médicale

Publications (1)

Publication Number Publication Date
EP1847772A1 true EP1847772A1 (fr) 2007-10-24

Family

ID=37963884

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07005276A Withdrawn EP1840456A1 (fr) 2006-03-27 2007-03-14 Lampe médicale
EP07013913A Withdrawn EP1847772A1 (fr) 2006-03-27 2007-03-14 Lampe médicinal

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP07005276A Withdrawn EP1840456A1 (fr) 2006-03-27 2007-03-14 Lampe médicale

Country Status (3)

Country Link
US (1) US7407309B2 (fr)
EP (2) EP1840456A1 (fr)
DE (1) DE102006014003A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8651708B2 (en) * 2010-06-25 2014-02-18 General Electric Company Heat transfer system for a light emitting diode (LED) lamp
US9480539B2 (en) 2011-11-03 2016-11-01 James Ortlieb Viewing system and viewing method for assisting user in carrying out surgery by identifying a target image
US9730851B2 (en) 2012-09-07 2017-08-15 Allen Medical Systems, Inc. Surgical support system
US9107792B2 (en) 2012-09-07 2015-08-18 Allen Medical Systems, Inc. Carriage for a surgical boot of a hip distractor
US8858016B2 (en) 2012-12-06 2014-10-14 Relume Technologies, Inc. LED heat sink apparatus
CN105805703B (zh) * 2014-12-31 2018-08-31 上海正华医疗设备有限公司 一种无影灯调光机构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1497338A1 (de) * 1965-10-15 1970-07-30 Sunbeam Lighting Company Untersuchungslampe
US4600979A (en) * 1985-10-02 1986-07-15 American Sterilizer Company Passive cooling system for a luminaire
WO1987000603A1 (fr) * 1985-07-15 1987-01-29 American Sterilizer Co. Organe d'eclairage a source multiple

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827554A (en) * 1953-10-14 1958-03-18 Gunther Franz Operating table lamp
DE1970078U (de) * 1967-05-02 1967-10-12 Karl Storz Lichtprojektor mit kuehleinrichtung.
US4578742A (en) * 1984-10-24 1986-03-25 American Sterilizer Company Removable lampholder
US4930054A (en) * 1988-12-09 1990-05-29 Nutone, Inc. Dual cone recessed lighting fixture
DE29606988U1 (de) * 1996-04-19 1996-07-11 Elkamet Kunststofftechnik GmbH, 35216 Biedenkopf Lampenabdeckung für eine Außenleuchte, insbesondere Mast-Aufsetzleuchte
DE29906721U1 (de) * 1999-04-15 1999-07-08 Medline Enterprise Co., Ltd., Taipeh/T'ai-pei Operationslampe
EP1447619A1 (fr) * 2003-02-12 2004-08-18 Exterieur Vert S.A. Dispositif d'éclairage, notamment projecteur tel que luminaire étanche encastré dans le sol, à refroidissement par ventilation d'air
US7275848B2 (en) * 2005-02-16 2007-10-02 Visteon Global Technologies, Inc. Headlamp assembly having cooling channel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1497338A1 (de) * 1965-10-15 1970-07-30 Sunbeam Lighting Company Untersuchungslampe
WO1987000603A1 (fr) * 1985-07-15 1987-01-29 American Sterilizer Co. Organe d'eclairage a source multiple
US4600979A (en) * 1985-10-02 1986-07-15 American Sterilizer Company Passive cooling system for a luminaire

Also Published As

Publication number Publication date
DE102006014003A1 (de) 2007-10-04
EP1840456A1 (fr) 2007-10-03
US7407309B2 (en) 2008-08-05
US20070242447A1 (en) 2007-10-18

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