EP0582897A2 - 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 PDFInfo
- Publication number
- EP0582897A2 EP0582897A2 EP93112086A EP93112086A EP0582897A2 EP 0582897 A2 EP0582897 A2 EP 0582897A2 EP 93112086 A EP93112086 A EP 93112086A EP 93112086 A EP93112086 A EP 93112086A EP 0582897 A2 EP0582897 A2 EP 0582897A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lamp
- reflector
- light according
- work area
- housing
- 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.)
- Granted
Links
Images
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 lamp for medical, in particular dental practice, in which a lamp body containing at least one lamp and a reflector is provided with means for dissipating the heat generated by the lamp.
- a translucent protective shield is arranged on the front of the lamp, which forms a chamber together with the reflector and the lamp housing, in the center of which the lamp is located.
- the protective shield forms side openings through which cooling air can enter. Further gaps or openings are formed on the lower and upper edge of the reflector and on the side together with the protective shield, through which heated air can escape.
- the aforementioned disadvantages also apply to a multiple reflector system known from US-3,703,635, which is primarily used for high-power lamps, e.g. Xenon high pressure lamps, in the power range between 2 and 8,000 W, is provided.
- the reflector system contains four reflectors, some of which are fixed, others are adjustable to adjust the beam width of the light, e.g. to be able to change 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. Both in the area of the front axial fan and in the area of the reflector, the tube contains radial slots through which air can be sucked in 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 combined fan and lighting device which is - preferably suitable for attachment to the ceiling of a room.
- the device comprises a lamp housing in which a fan and a fluorescent lamp are arranged.
- Two motors are arranged axially one behind the other in the fan housing; one drives the fan wheel, with the other a lampshade on which the light and also the cooling air exits can be rotated, as a result of which the position of the air outflow slots arranged in the lampshade can be changed.
- the air outlet direction can be varied and thus the air flow can be changed individually.
- the light coming from a fluorescent lamp emerges directly through slots; the lighting device thus contains no reflector. Furthermore, there are no air inlet openings.
- the invention specified in claim 1 is based on the object to provide an improvement and to provide a work field lamp which, while avoiding heating up of the reflector and other parts which can be touched from the outside during handling, is good dissipation of the heat generated by the lamp and good Cleaning the reflector without dismantling parts.
- the shield provided according to the invention is part of a heat-conducting device which ensures that air can only enter the system at the front edge of the lamp and can only escape again on the opposite side, that is to say at the rear of the reflector.
- the reflector is otherwise freely accessible and does not require a large area Protective shield.
- an electrically operated fan can additionally be provided. If, as is customary today, the lamp is operated with a halogen or other gas-filled lamp, it is advantageous to design the transparent section to be explosion-proof, for example to manufacture it from suitable safety glass. Furthermore, it is advantageous to manufacture this transparent section from UV-absorbing material or to provide it with a coating reflecting UV radiation on its inside.
- 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 bow-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 lamp front surface, i.e. on the fan cap 15, and on the opposite side, that is to say 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)
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 true EP0582897A2 (fr) | 1994-02-16 |
EP0582897A3 EP0582897A3 (en) | 1994-05-18 |
EP0582897B1 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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0667485A1 (fr) * | 1994-02-10 | 1995-08-16 | Mdt Corporation | Poignée pour appareil d'éclairage de dentisterie |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1072776A (fr) * | 1953-02-05 | 1954-09-15 | Projecteur auxiliaire pour l'éclairage, en chirurgie, des champs opératoires profonds | |
FR1108909A (fr) * | 1954-10-02 | 1956-01-19 | Appareil d'éclairage chirurgical | |
GB2100403A (en) * | 1981-06-15 | 1982-12-22 | Sybron Corp | Surgical lamp |
DE3807584A1 (de) * | 1988-03-08 | 1989-09-21 | Stierlen Maquet Ag | Operationsleuchte |
EP0396219A2 (fr) * | 1989-01-26 | 1990-11-07 | Kirschner Medical Corporation | Lampe, en particulier pour salles d'opération |
WO1991014131A1 (fr) * | 1990-03-16 | 1991-09-19 | American Sterilizer Company | Systeme optique pour appareil d'eclairage |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3703635A (en) * | 1970-09-08 | 1972-11-21 | E Systems Inc | Zoom light |
US4254454A (en) * | 1979-12-21 | 1981-03-03 | Pelton & Crane Company | Self-ventilating dental lighting device |
GB2123132A (en) * | 1982-07-01 | 1984-01-25 | Chung Shan Chu | A combined fan and illuminating device |
US4837668A (en) * | 1988-01-28 | 1989-06-06 | Koehler Joseph P | Reflector for dental or medical light |
US5134554A (en) * | 1990-08-30 | 1992-07-28 | Lightolier, Inc. | Lighting system |
DE9013302U1 (de) * | 1990-09-20 | 1990-11-29 | Broecker, Friedrich W., Dipl.-Ing., 5400 Koblenz | Leuchtengehäuse mit Schnellwechsel-Halterung |
DE9017143U1 (de) * | 1990-12-19 | 1991-03-07 | Delma, Elektro- Und Medizinische Apparatebaugesellschaft Mbh, 7200 Tuttlingen | Operationsleuchte |
-
1992
- 1992-08-11 DE DE4226594A patent/DE4226594A1/de not_active Withdrawn
-
1993
- 1993-07-28 DE DE59306317T patent/DE59306317D1/de not_active Expired - Fee Related
- 1993-07-28 DK DK93112086.9T patent/DK0582897T3/da active
- 1993-07-28 EP EP93112086A patent/EP0582897B1/fr not_active Expired - Lifetime
- 1993-08-02 US US08/100,135 patent/US5473524A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1072776A (fr) * | 1953-02-05 | 1954-09-15 | Projecteur auxiliaire pour l'éclairage, en chirurgie, des champs opératoires profonds | |
FR1108909A (fr) * | 1954-10-02 | 1956-01-19 | Appareil d'éclairage chirurgical | |
GB2100403A (en) * | 1981-06-15 | 1982-12-22 | Sybron Corp | Surgical lamp |
DE3807584A1 (de) * | 1988-03-08 | 1989-09-21 | Stierlen Maquet Ag | Operationsleuchte |
EP0396219A2 (fr) * | 1989-01-26 | 1990-11-07 | Kirschner Medical Corporation | Lampe, en particulier pour salles d'opération |
WO1991014131A1 (fr) * | 1990-03-16 | 1991-09-19 | American Sterilizer Company | Systeme optique pour appareil d'eclairage |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0667485A1 (fr) * | 1994-02-10 | 1995-08-16 | Mdt Corporation | Poignée pour appareil d'éclairage de dentisterie |
Also Published As
Publication number | Publication date |
---|---|
US5473524A (en) | 1995-12-05 |
DE59306317D1 (de) | 1997-06-05 |
EP0582897B1 (fr) | 1997-05-02 |
DE4226594A1 (de) | 1994-02-17 |
DK0582897T3 (da) | 1997-12-01 |
EP0582897A3 (en) | 1994-05-18 |
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