EP0582897B1 - Lampe d'éclairage du champ de travail pour cabinet médical, notamment dentaire - Google Patents

Lampe d'éclairage du champ de travail pour cabinet médical, notamment dentaire Download PDF

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Publication number
EP0582897B1
EP0582897B1 EP93112086A EP93112086A EP0582897B1 EP 0582897 B1 EP0582897 B1 EP 0582897B1 EP 93112086 A EP93112086 A EP 93112086A EP 93112086 A EP93112086 A EP 93112086A EP 0582897 B1 EP0582897 B1 EP 0582897B1
Authority
EP
European Patent Office
Prior art keywords
lamp
reflector
housing
light according
fan
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.)
Expired - Lifetime
Application number
EP93112086A
Other languages
German (de)
English (en)
Other versions
EP0582897A2 (fr
EP0582897A3 (en
Inventor
Wolfgang Behringer
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0582897A2 publication Critical patent/EP0582897A2/fr
Publication of EP0582897A3 publication Critical patent/EP0582897A3/de
Application granted granted Critical
Publication of EP0582897B1 publication Critical patent/EP0582897B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • 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
    • 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
    • F21W2131/202—Lighting for medical use for dentistry
    • 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 invention relates to a work field light for medical, in particular dental practice, according to the preamble of claim 1.
  • the reflector is covered on the front side, that is to say on the light exit side, by a glass plate.
  • the reflector and glass plate form a closed housing and are connected to each other by a cylindrical tube made of transparent material.
  • the lamp which is surrounded by the transparent tube, is easily detachably mounted on a support attached to the glass plate by means of a bayonet catch.
  • Both the lamp holder and the reflector contain openings which allow air to circulate parallel to the axis within the cylindrical tube so that the warm air generated by the lamp can be discharged to the outside without striking the reflector (FR-A-1 108 909 ).
  • a translucent protective shield is arranged on the front of the luminaire, which together with the reflector and the luminaire housing forms a chamber in the center thereof the lamp is located.
  • the protective shield forms side openings through which cooling air can enter.
  • the aforementioned disadvantages also apply to a multiple reflector system known from US Pat. No. 3,703,635, which is primarily intended for high-power lamps, for example xenon high-pressure lamps, in the power range between 2 and 8,000 W.
  • the reflector system contains four reflectors, some of which are fixed, others are adjustable so that the beam width of the light can be changed, for example from spot to flood.
  • axial fans are arranged at both ends of the reflector system.
  • the front, front fan is arranged in a tube that extends in the direction of the reflector axis; however, the tube surrounds the lamp only in one base area, ie it only extends over part of the lamp length.
  • the tube contains both in the area of the front axial fan and in the area of the reflector radial slots through which air can be sucked and blown onto the reflector to cool it.
  • a lighting system with a halogen lamp is known from US Pat. No. 5,134,554, in which the lamp is surrounded by a pear-shaped protective bell.
  • the protective bell is provided with air outflow channels at the rear end, with which it is attached to the lamp base holder.
  • the protective bell itself contains no air inflow opening.
  • a medical lamp is known from GB-A-2 100 403, in which the lamp is surrounded by a glass cylinder which transmits infrared radiation and which contains a glare protection on the light exit side.
  • the reflector is also transparent to infrared. With this lamp, the infrared radiation is deliberately passed through both the glass cylinder and the reflector.
  • the invention specified in claim 1 is based on the object of specifying a work field lamp which, while avoiding heating up of the reflector and other parts which can be touched from the outside during handling, leads to good dissipation of the heat generated by the lamp and cleans the reflector without dismantling Sharing.
  • the transparent section is designed to be explosion-proof when using a halogen or other gas-filled lamp, for example made of a suitable safety glass.
  • an electrically operated fan can additionally be provided.
  • FIG. 1 shows a diagrammatic representation of a dental work area lamp with a mounting bracket 1 which can be fastened to a wall or ceiling support arm (not shown) and on which a lamp body, generally designated 4, is pivotably arranged via a horizontal pivot axis 2 with the aid of laterally arranged handles 3.
  • the luminaire body 4 comprises a glass reflector 5 which is open towards the front, ie in the direction of illumination, and which is pivotably connected to the support bracket 1 by means of a carrier part 6.
  • the stirrup-shaped reflector support part 6 consists of two halves, a front part 7, with a centrally arranged cylindrical outer housing 8 and side arms 9 fastened to it on both sides, and a rear half 10, which has an inner housing 11 that fits into the outer housing 8 contains, on both sides of which side arms 12 are fastened, which partially engage in the side arms 9 of the front carrier halves when the halves are assembled.
  • the cylindrical outer housing 8 contains in the front end region a plurality of cams 13 on the circumference, which cooperate with resilient elements 14 of a fan cap 15 and form a snap connection which axially fixes the two parts in the attached state.
  • the fan housing 16 denotes a housing for receiving an electrically drivable fan 17, which has a trapezoidal thread 18 on the outer circumference, which cooperates with corresponding engagement means of the fan cap 15, which cannot be seen from the illustration.
  • the fan housing 16 is provided with fastening bolts 19 to which a base 21 accommodating the lamp 20 can be fastened.
  • Fan housing 16 with fan 17 and fan cap 15 form in the assembled state together with the lamp 20 and the lamp base 21 a structural unit which can be latched axially in the outer housing 8 of the front support half 7 by means of the snap connection 13, 14 and is axially easily detachable for replacing the lamp .
  • the snap connection is designed so that the fan cap can be rotated in the locked state. Through the engagement with the trapezoidal thread 18, the fan housing 16 and thus the lamp base fastened to it can be axially displaced when the fan cap 15 rotates, as a result of which a optimal setting of the lamp focal point in relation to the reflector can be achieved.
  • the electrical supply of the lamp 20 takes place via electrical sliding contact elements 22, which are held in recesses 23 arranged on both sides of the inner housing 11 and in the side arms 12 of the rear carrier half 10.
  • the sliding contact elements 22 are provided with busbars 24, which correspond to resilient contact surfaces 25 in the lamp base 1.
  • the arrangement is such that, in the case of the above-described longitudinal displaceability of the fan housing and thus of the lamp base, contact is ensured within the adjustment path.
  • the contact elements 22 are connected to the ends of electrical supply lines 26, which are laid in the cavity of one side arm formed by the two support halves and are guided into the support bracket via the swivel joint.
  • the electrical supply of the fan 17 can take place via separate further lines, not shown, which are also guided in one of the side arms and are brought to the fan 17 via openings in the lamp base 21.
  • the blind ring 30 is with With the help of holding elements 31 in the inner housing 11 axially displaceable, but secured against rotation, fastened.
  • the reflector 5 provided with a central bore 32 can be fixed by two parts 33, 34 which can be connected by screwing, with an O-ring 35 interposed.
  • the part 34 which is designed as a screw ring, contains a plurality of cams 35 on the circumference, which correspond to resilient elements 36 of an adjusting ring 37 and, in the assembled state, a snap connection which axially fixes the parts 34 and 37 but can be rotated relative to one another, similar to positions 15 and 8 (FIG 2A).
  • 38 in the assembled state denotes the lamp 20, which is at least concentrically partially surrounding the diaphragm, which is carried by holding elements 39 which are guided in longitudinal guide grooves 40 in the holding part 33 of the reflector.
  • a threaded bolt 41 is fastened to the holding elements 39 and corresponds to a threaded nut 43 arranged on the adjusting ring 37.
  • the aperture 38 can be adjusted lengthwise by rotating the adjusting ring 37, as a result of which the brightness of the light spot generated can be varied in a known manner.
  • the two front side arms 9 (FIG. 2A) are provided with corresponding holding claws 44, 44a.
  • a cylindrical glass tube 45 is arranged, the outer diameter of which corresponds essentially to the outer diameter of the outer housing 8 and which faces the reflector and is pushed onto a correspondingly designed collar 46 of the holding part 33 and is arranged on the front support half 7 by correspondingly arranged on the circumference Guide tabs 47 is centered.
  • the glass tube 45 is preferably made of safety glass and is transparent to visible light, but absorbing or reflecting for radiation in the infrared range.
  • the tube can either be made from a corresponding material or can also be provided with a corresponding coating.
  • the heat-generating lamp 20 which may preferably be a halogen lamp, with the exception of inlet openings 48 on the front side of the fan cap 15 and outlet openings 49 on the front side of the adjusting ring 37, is practically shielded against uncontrolled heat radiation by serving as a shield , axially parallel to the rotational symmetry axis of the reflector cylindrical parts 45 and 8, a targeted heat-conducting device is formed, which causes air to enter the system only on the front face of the pen, i.e. on the fan cap 15, and on the opposite side, i.e. at the front end of the adjusting ring 37 , can exit from this.
  • This heat conduction system creates a certain chimney effect which, if necessary, ie when the lamp is in operation for a longer time, can be increased by switching on the fan 17.

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. Lampe d'éclairage de la zone de travail pour l'exercice de la médecine, notamment de la médecine dentaire, comportant un élément (4) d'éclairage qui contient une lampe (20) et un réflecteur (5) et qui est muni d'une protection (8, 27, 45) qui est montée parallèlement à l'axe de symétrie de révolution du réflecteur (5), qui s'étend jusqu'au réflecteur (5), qui est fermée dans la direction périphérique, qui entoure la lampe (20), qui est réalisée transparente au moins dans la zone où le réflecteur reçoit de la lumière et qui contient pour de l'air froid des ouvertures (48) d'entrées se trouvant devant le réflecteur et des ouvertures (49) de sortie se trouvant après le réflecteur, les ouvertures étant essentiellement frontales, caractérisée en ce qu'il est prévu un réflecteur (5) ouvert dans la direction de sortie du faisceau, en ce que la protection comporte une partie (45) en matériau transparent proche du réflecteur et une partie (8, 27) en matériau non transparent qui s'y raccorde axialement et en ce que la partie (45) transparente est en un matériau absorbant le rayonnement infrarouge ou est munie sur sa face intérieure d'un revêtement réfléchissant ce rayonnement, la partie (45) transparente étant en un matériau qui résiste au moins à la pression du gaz de la lampe lorsque l'on utilise une lampe (20) ayant un gaz sous pression.
  2. Lampe d'éclairage de la zone de travail suivant la revendication 1, dans laquelle la partie (8, 27) non transparente contient un boîtier (8, 11) dans lequel un module recevant au moins le culot (21) de la lampe comportant la lampe (20) est fixé de manière facilement amovible.
  3. Lampe d'éclairage de la zone de travail suivant la revendication 2, dans laquelle le culot (21) de la lampe et le boîtier (8, 11) sont munis de contacts (22, 24, 25) frottants qui produisent une mise en contact et une mise hors contact automatiques respectivement lors de l'introduction et du retrait du module.
  4. Lampe d'éclairage de la zone de travail suivant la revendication 3, dans laquelle le module est muni d'un moyen (15) de réglage qui comporte des moyens d'engrènement destinés à une pièce (18) qui est reliée de manière fixe au culot (21) de la lampe, ainsi que des moyens d'encliquetage destinés à une fixation amovible au boîtier (8), de sorte que, lorsque le moyen (15) de réglage tourne, le culot (21) de la lampe comportant la lampe (20) est déplacé axialement.
  5. Lampe d'éclairage de la zone de travail suivant la revendication 2, dans laquelle le module contient de plus encore un ventilateur (17) monté dans la zone des ouvertures (48) d'entrée.
  6. Lampe d'éclairage de la zone de travail suivant la revendication 5, dans laquelle le ventilateur (17) est monté dans un boîtier (16) qui est support du culot (21) de la lampe.
  7. Lampe d'éclairage de la zone de travail suivant la revendication 6, dans laquelle le boîtier (16) de ventilateur est muni d'un filetage (18), dans lequel engrène un élément de réglage qui est monté dans un cache (15) de ventilateur contenant les ouvertures (48) d'entrée, et dans laquelle le boîtier (18) extérieur et le cache (15) de ventilateur sont munis de moyens (13, 14) d'encliquetage qui fixent le cache de ventilateur de manière qu'il puisse tourner et s'encliqueter axialement, de sorte que, lorsque le cache (15) de ventilateur tourne, le boîtier (16) du ventilateur comportant le culot (21) de la lampe est déplacé dans la direction axiale.
  8. Lampe d'éclairage de la zone de travail suivant la revendication 2, dans laquelle le boîtier (8, 11) est muni de bras (9, 10) latéraux qui s'étendent transversalement à l'axe longitudinal et aux extrémités desquels sont montés des moyens de maintien pour fixer avec possibilité de basculement l'élément (4) d'éclairage à un étrier (1) de support.
  9. Lampe d'éclairage de la zone de travail suivant la revendication 8, dans laquelle les bras (9, 10) latéraux sont conformés en étrier.
  10. Lampe d'éclairage de la zone de travail suivant la revendication 9, dans laquelle un boîtier (8) et deux bras (9) latéraux qui y sont fixés forment une moitié (7) avant de support et un boîtier (11) intérieur pouvant être enfilé dans le boîtier (8) extérieur et deux bras (12) latéraux fixés au boîtier intérieur forment une moitié (10) arrière de support, les bras (9, 12) latéraux étant conformés de manière à s'interpénétrer partiellement à l'état monté et à former alors une cavité (23) servant à faire passer des lignes (26) électriques.
  11. Lampe d'éclairage de la zone de travail suivant la revendication 1, dans laquelle le réflecteur (5) est muni d'un trou (32) central par lequel il est saisi au moyen d'une douille (33, 34) filetée, caractérisé en ce que la pièce (33) avant de douille comporte un collet (46) sur lequel l'une des extrémité de la partie (45) transparente est enfilée, l'autre extrémité pouvant être reliée au boîtier (8) de la partie non transparente, et en ce que la pièce (34) arrière de douille est munie de moyens (37) de réglage pour déplacer axialement un diaphragme (38) qui entoure directement la lampe (20) et à l'aide duquel, tout en conservant la distance de la lampe (20) au réflecteur (5), les faisceaux lumineux peuvent être au moins partiellement supprimés en vue de faire varier la clarté de la zone d'éclairage.
  12. Lampe d'éclairage de la zone de travail suivant l'une des revendications 1 à 11, dans laquelle les deux parties (8, 45) sont en forme de tube.
EP93112086A 1992-08-11 1993-07-28 Lampe d'éclairage du champ de travail pour cabinet médical, notamment dentaire Expired - Lifetime EP0582897B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4226594A DE4226594A1 (de) 1992-08-11 1992-08-11 Arbeitsfeldleuchte, insbesondere für die zahnärztliche Praxis
DE4226594 1992-08-11

Publications (3)

Publication Number Publication Date
EP0582897A2 EP0582897A2 (fr) 1994-02-16
EP0582897A3 EP0582897A3 (en) 1994-05-18
EP0582897B1 true EP0582897B1 (fr) 1997-05-02

Family

ID=6465335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93112086A Expired - Lifetime EP0582897B1 (fr) 1992-08-11 1993-07-28 Lampe d'éclairage du champ de travail pour cabinet médical, notamment dentaire

Country Status (4)

Country Link
US (1) US5473524A (fr)
EP (1) EP0582897B1 (fr)
DE (2) DE4226594A1 (fr)
DK (1) DK0582897T3 (fr)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
US5562344A (en) * 1994-02-10 1996-10-08 Mdt Corporation Handle for dental light
DE29703590U1 (de) * 1997-02-28 1997-05-15 Raimund Gretenkort GmbH & Co KG, 59469 Ense Strahler
TW461949B (en) * 1997-07-31 2001-11-01 Plus Kk Lamp cartridge
US6183114B1 (en) 1998-05-28 2001-02-06 Kermit J. Cook Halogen torchiere light
DE19916241C2 (de) 1999-04-10 2001-04-19 Dental Kunstleder & Lederservi Operationsleuchte, insbesondere für den Dentalbereich
US6908208B1 (en) 2004-01-02 2005-06-21 Raymond Quentin Hyde Light to be worn on head
TW200614968A (en) * 2004-07-02 2006-05-16 Discus Dental Impressions Inc Illumination system for dentistry applications
US8613616B2 (en) * 2004-07-02 2013-12-24 Discus Dental, Llc Illumination system for dentistry applications
US7665875B2 (en) * 2008-02-21 2010-02-23 Rick Whitman Articulating dental operatory light
DE502008001209D1 (de) * 2008-06-20 2010-10-07 Trumpf Medizin Systeme Gmbh & Co Kg Operationsleuchte
EP2136125B1 (fr) * 2008-06-20 2010-08-11 TRUMPF Medizin Systeme GmbH + Co. KG Lampe chirurgicale dotée d'un dispositif de suspension
CN103075683A (zh) * 2012-12-31 2013-05-01 苏州承源光电科技有限公司 一种防爆灯
US20170281126A1 (en) * 2016-03-31 2017-10-05 General Electric Company Systems and methods for passive wire management

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FR1108909A (fr) * 1954-10-02 1956-01-19 Appareil d'éclairage chirurgical
US3703635A (en) * 1970-09-08 1972-11-21 E Systems Inc Zoom light
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DE9017143U1 (de) * 1990-12-19 1991-03-07 Delma, Elektro- Und Medizinische Apparatebaugesellschaft Mbh, 7200 Tuttlingen Operationsleuchte

Also Published As

Publication number Publication date
US5473524A (en) 1995-12-05
DE59306317D1 (de) 1997-06-05
DE4226594A1 (de) 1994-02-17
DK0582897T3 (da) 1997-12-01
EP0582897A2 (fr) 1994-02-16
EP0582897A3 (en) 1994-05-18

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