EP0140390A2 - Lampe médicale - Google Patents

Lampe médicale Download PDF

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Publication number
EP0140390A2
EP0140390A2 EP84113221A EP84113221A EP0140390A2 EP 0140390 A2 EP0140390 A2 EP 0140390A2 EP 84113221 A EP84113221 A EP 84113221A EP 84113221 A EP84113221 A EP 84113221A EP 0140390 A2 EP0140390 A2 EP 0140390A2
Authority
EP
European Patent Office
Prior art keywords
housing
light
lamp
infrared
medical
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.)
Ceased
Application number
EP84113221A
Other languages
German (de)
English (en)
Other versions
EP0140390A3 (fr
Inventor
Jürgen Brandt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0140390A2 publication Critical patent/EP0140390A2/fr
Publication of EP0140390A3 publication Critical patent/EP0140390A3/fr
Ceased 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/04—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out infrared radiation
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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 medical lamp, with a
  • housing in which at least one light source with electrical feed lines, a cold light reflector which is permeable to infrared light for the emitted light and a cover plate on the bottom are accommodated.
  • Such a medical lamp is known from DE-AS 12 01 278. It deals with the problem of making the proportion of visible radiation of the total radiation incident on the operating field as large as possible while maintaining a radiation source and its operating conditions, and the Ab greatly reduce radiation from infrared light on the operating field. Cold light reflectors and infrared mirrors are used for this purpose. In this context, the removal of the heat generated in the luminaire during operation is not taken into account, which will inevitably lead to the luminaire heating up. It is therefore necessary to work with a relatively low power consumption in the known luminaire, which leads to a low luminous efficacy.
  • lamps in the medical field which have been heated up in this way can undesirably promote the growth of germs.
  • the reflector attached to the inside of the lamp has a reflective coating that decreases from the edge to the crown, so that in some areas all of the light emitted by the incandescent lamp, including the infrared light, can escape from the front of the lamp without taking care of the working field of heat radiation keep clear.
  • the invention has for its object to design a medical lamp of the type mentioned so that a low outside temperature of the lamp is guaranteed even with high power consumption of the light source.
  • the solution according to the invention is that the housing consists of a plastic which is permeable to infrared light and has a low thermal conductivity.
  • the luminaire according to the invention advantageously has a low weight, has a high breaking strength and shows only a slight heating during operation, since the infrared radiation is effectively discharged to the outside.
  • the luminaire can therefore be equipped with incandescent lamps of higher output, ie with significantly higher illuminance, which ensures a particularly good light yield.
  • the temperature of the lamp is nevertheless much lower than that of conventional lamps.
  • the medical lamp can thus also be used as an operating lamp be used, i.e. in environments where high sterility is important, since the light does not act as a bacterial spinner. Investigations have shown that instead of the incandescent lamps used hitherto, it is also possible to use those with a much higher output, the housing of the lamp only reaching a low temperature, even if the operation takes many hours.
  • a partition made of the plastic forming the housing is arranged between the reflector and the ceiling-side part of the housing. This creates a double window effect. Even if the partition heats up more locally, its temperature is considerably lower a few centimeters away, even in the area adjacent to the wall of the housing. As a result, there is advantageously no strong heating of the lamp on the housing itself, so that the desired low outside temperature remains guaranteed.
  • polymethacrylate, polyetherimide or polycarbonate is used as the plastic for the medical lamp according to the invention.
  • the plastic can be transparent, i.e. almost crystal clear, but also painted or painted, provided that this does not significantly reduce the permeability to infrared light.
  • the surface of the infrared-permeable plastic can also be partially or entirely structured, provided that it is only guaranteed that a high proportion of the infrared rays can leave the housing.
  • Commercially available materials can be used, which enable the medical lamp to be constructed in a light yet robust manner.
  • a plurality of medical lights of the type described above can also be accommodated in a common housing, which consists of a plastic which is permeable to infrared light and has low thermal conductivity.
  • a medical lamp 10 can be seen with an incandescent lamp 12 provided with a filament 13, which is seated in a socket 14 and is fastened to a holder.
  • the incandescent lamp 12 is located inside a housing, which in the present case consists of an upper part 30 and a lower part 32.
  • the ceiling-side part of the housing is designated by the reference symbol 46 and, in the exemplary embodiment, is formed in one piece with the upper part 30 of the housing. In an embodiment, not shown, this ceiling-side part z. B. can also be used with a snap lock in the upper part 30.
  • the upper part 30 and the lower part 32 of the housing are in engagement with one another via a quickly releasable connection 34, z. B. can be a snap lock, a bayonet lock 'or a screw lock.
  • the upper part 30 and the lower part 32 of the housing consist of a plastic which is permeable to infrared light and has a low thermal conductivity, so that the heat generated during operation of the incandescent lamp 12 is emitted to the surroundings in the form of infrared radiation.
  • a cold light reflector 40 is provided in the interior of the housing, which can be designed as a spherical mirror, parabolic mirror or ellipsoid mirror and reflects visible light to the front of the medical lamp 10, but for the most part allows infrared light to pass through.
  • This cold light reflector 40 lies on a support 36 on the wall of the upper part 30 and is fixed with a pressure part 38, as shown schematically in the drawing.
  • a partition 42 can be seen, the outside is seated on a projection 48 of the upper part 30 of the housing and is fixed in position with a clip fastener 50, as shown schematically in the drawing.
  • This partition 42 also consists of a plastic that is permeable to infrared light and has a double window effect.
  • the partition 42 can either be flat, as shown in the drawing, or have a greater curvature, such as that of the cold light reflector 40.
  • the position of the partition 42 between the cold light reflector 40 and the ceiling-side part 46 can be chosen approximately in the middle or in some other suitable manner in order to achieve an optimal radiation of the infrared radiation and to prevent heating of the outer housing.
  • Glass or polyetherimide for example, is used as the material for the cold light reflector 40.
  • B. can be coated by electroplating or vapor deposition to improve its reflection properties.
  • the upper part 30 and the lower part 32 of the housing and the partition 42 consist of suitable plastics, such as. B. polymethacrylate, polyetherimide or polycarbonate. These materials are e.g. B. commercially available under the names Makrolon, Plexiglas or Ultem. Experiments have shown that these plastics have the required strength and durability during operation, are light in weight and cause little heating of the housing and also guarantee perfect functioning with good heat dissipation if these plastics change color over time.
  • the temperature of the dividing wall 42 was only 37 ° C. at a distance of a few centimeters from the central axis 44. Also the The temperature of the housing was only about 37 ° C, so that the otherwise feared heating of the housing did not occur in the medical lamp.
  • a bottom-side cover plate 28 can be seen, which lies on a bearing 52 on the lower part 32 of the housing and is fastened with a clamp or screw connection 66.
  • this lens 28 carries a plurality of anti-glare rings 26, which consist of a suitable opaque material and ensure that the user is preferably not dazzled when he looks up into the medical lamp 10.
  • the number of anti-glare rings 26 can be suitably chosen.
  • the anti-glare rings 26 carry a heat protection filter 24 in the form of a disk, which reflects infrared radiation from the incandescent lamp 12 into the rear area of the medical lamp 10 and thus ensures the passage of so-called: cold light to the front of the medical lamp 10.
  • the outer anti-glare ring 26 is provided in the illustrated embodiment with elastic spring arms 58, with which the heat protection filter 24 is held. Furthermore, one can see schematically indicated supply lines 22 in the front area of the medical lamp 10 for the electrical supply of the incandescent lamp 12. Both the cover plate 28 and the heat protection filter 24 can be made of transparent plastic, such as. B. polymethacrylate, polyetherimide. Or polycarbonate and may be designed as a collecting or scattering lens for the emerging visible light.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation-Therapy Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
EP84113221A 1983-11-03 1984-11-02 Lampe médicale Ceased EP0140390A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3339789 1983-11-03
DE3339789A DE3339789C2 (de) 1983-11-03 1983-11-03 Medizinische Leuchte

Publications (2)

Publication Number Publication Date
EP0140390A2 true EP0140390A2 (fr) 1985-05-08
EP0140390A3 EP0140390A3 (fr) 1986-10-08

Family

ID=6213376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113221A Ceased EP0140390A3 (fr) 1983-11-03 1984-11-02 Lampe médicale

Country Status (2)

Country Link
EP (1) EP0140390A3 (fr)
DE (1) DE3339789C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814539A1 (de) * 1988-04-29 1989-11-09 Heraeus Gmbh W C Beleuchtungsanordnung mit halogengluehlampe
FR2712666A1 (fr) * 1993-11-15 1995-05-24 Delma Elektro Med App Luminaire pour application médicale.

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3628088A1 (de) * 1986-08-19 1988-02-25 Bat Cigarettenfab Gmbh Einrichtung zur optischen ueberpruefung der oberflaeche von stabfoermigen rauchartikeln und/oder filterstaeben fuer die tabakindustrie
DE3634156A1 (de) * 1986-10-07 1988-04-21 Stefan Tauschek Flaechenleuchte
DE3811297A1 (de) * 1988-04-02 1989-10-12 Licentia Gmbh Leuchte mit transparentem leuchtengehaeuse
DE4008124A1 (de) * 1990-03-14 1991-09-19 Nafa Light Kurt Maurer Leuchte
DE4008932A1 (de) * 1990-03-20 1991-09-26 Siemens Ag Modular aufgebautes beleuchtungssystem, insbesondere fuer fahr- und rollbahnen von flughaefen
DE4334882A1 (de) * 1993-10-08 1995-06-29 Abke Hermann Elektro Kg Möbeleinbauleuchte
DE9418339U1 (de) * 1994-11-15 1995-01-05 Dr. Mach GmbH & Co, 85560 Ebersberg Operationsleuchte
DE19533849C2 (de) * 1995-09-13 2000-11-09 Hoffbauer Herner Glas Leuchte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032771A (en) * 1973-02-06 1977-06-28 Original Hanau Quarzlampen Gmbh Surgical operating lamp
FR2393231A1 (fr) * 1977-06-04 1978-12-29 Original Hanau Quarzlampen Carter pour scialytique
FR2431656A1 (fr) * 1978-07-20 1980-02-15 Original Hanau Quarzlampen Lampe scialytique possedant un dispositif de dissipation de la chaleur
GB2100403A (en) * 1981-06-15 1982-12-22 Sybron Corp Surgical lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861090C (de) * 1950-04-21 1952-12-29 Emda Arbeitsleuchte, insbesondere fuer die zahnaerztliche Praxis
DE1201278B (de) * 1962-05-04 1965-09-23 Quarzlampen Gmbh Operationsleuchte

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032771A (en) * 1973-02-06 1977-06-28 Original Hanau Quarzlampen Gmbh Surgical operating lamp
FR2393231A1 (fr) * 1977-06-04 1978-12-29 Original Hanau Quarzlampen Carter pour scialytique
FR2431656A1 (fr) * 1978-07-20 1980-02-15 Original Hanau Quarzlampen Lampe scialytique possedant un dispositif de dissipation de la chaleur
GB2100403A (en) * 1981-06-15 1982-12-22 Sybron Corp Surgical lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814539A1 (de) * 1988-04-29 1989-11-09 Heraeus Gmbh W C Beleuchtungsanordnung mit halogengluehlampe
FR2712666A1 (fr) * 1993-11-15 1995-05-24 Delma Elektro Med App Luminaire pour application médicale.
US5820253A (en) * 1993-11-15 1998-10-13 Delma Elektro- Und Medizinische Apparatebau Gesellschaft Mbh Light for medical use

Also Published As

Publication number Publication date
DE3339789C2 (de) 1985-09-19
DE3339789A1 (de) 1985-05-23
EP0140390A3 (fr) 1986-10-08

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