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WO1996033772A1 - Lit a u.v. - Google Patents

Lit a u.v. Download PDF

Info

Publication number
WO1996033772A1
WO1996033772A1 PCT/GB1996/001035 GB9601035W WO9633772A1 WO 1996033772 A1 WO1996033772 A1 WO 1996033772A1 GB 9601035 W GB9601035 W GB 9601035W WO 9633772 A1 WO9633772 A1 WO 9633772A1
Authority
WO
WIPO (PCT)
Prior art keywords
sunbed
tubes
temperature
cooling air
ultra
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
PCT/GB1996/001035
Other languages
English (en)
Inventor
Brian Dennis Marshall
Gunther Hauser
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.)
HAZLITT NOMINEES Ltd
Original Assignee
HAZLITT NOMINEES Ltd
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 HAZLITT NOMINEES Ltd filed Critical HAZLITT NOMINEES Ltd
Priority to AU55069/96A priority Critical patent/AU5506996A/en
Publication of WO1996033772A1 publication Critical patent/WO1996033772A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0613—Apparatus adapted for a specific treatment
    • A61N5/0614—Tanning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N2005/002—Cooling systems
    • A61N2005/005—Cooling systems for cooling the radiator
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0626—Monitoring, verifying, controlling systems and methods
    • A61N2005/0627—Dose monitoring systems and methods
    • A61N2005/0628—Dose monitoring systems and methods including a radiation sensor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0635—Radiation therapy using light characterised by the body area to be irradiated
    • A61N2005/0636—Irradiating the whole body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/065—Light sources therefor
    • A61N2005/0655—Tubes

Definitions

  • This invention relates to a sunbed, that is to say a device comprising a multiplicity of tubes each for emitting ultraviolet radiation to effect tanning of a person located adjacent the device.
  • the sunbed may be embodied as a couch upon which the person using the sunbed lies, as a combined couch and cover in which both the couch and cover incorporate UV emitting tubes, or as a free standing unit which may be used above or to the side of a user to effect tanning of one side only of the user.
  • a sunbed comprises a rigid supporting structure, a reflector positioned on the supporting structure, a multiplicity of UV emitting fluorescent tubes and a clear UV transmissive cover overlying the tubes.
  • the cover serves to prevent direct contact with the tubes and, in the case when the sunbed is embodied as a couch, serves to provide a supporting surface upon which the user lies.
  • the existing sunbeds suffer from a number of significant isadvantages. Firstly, existing sunbeds inadequately control the operating temperature of the fluorescent tubes. Any particular fluorescent tube has, at any particular point during its life, an optimum operating temperature. If the tube is operated at below its optimum temperature the level of UV emission will be reduced and will be inadequate to effect the desired irradiation of the user. If the tube is run at a temperature above its optimum temperature an excessively high level of UV radiation may be emitted and, in the case of extreme over temperature operation harmful UV-C radiation may be emitted. Running tubes above the optimum temperature also tends to reduce the useful life of the tube.
  • the controls of existing sunbeds do not adequately guard against an individual receiving an excessive amount of UV radiation as a result of component failure or deliberate abuse of the controls.
  • the present invention provides a sunbed with substantially improved controls to optimise the effec iveness of the sunbed and the life expectancy of the tubes, and to prevent an individual from receiving an excessive amount of UV radiation as a result of component failure or deliberate misuse of the sunbed controls.
  • Figure 1 illustrates schematically an embodiment of the present invention embodied as a sunbed of the type comprising a couch and a cover each incorporating UV emi 11ing tubes ;
  • Figure 2 is a perspective view from above of the cover portion of the sunbed of Figure 1;
  • Figure 3 is a schematic perspective view of the reflector incorporated within the couch and the cover of the embodiment of Figure 1;
  • FIG A is a schematic cross section on the line IV-IV of Figure 2.
  • the sunbed illustrated in the drawings comprises a couch portion 1 supported on conventional legs 2, 3 and a cover portion 4 supported on the couch portion 1 by means of appropriate arms 5 to permit articulation of the cover portion relative to the couch portion.
  • This general form of structure of sunbed is well known to those skilled in the art and the exact nature of the interconnection between the cover portion and the couch portion, and the means of controlling the position of the cover portion relative to the couch portion is not critical to the present invention.
  • the preferred embodiment of the present invention incorporates various arrangements to optimise the operation of the sunbed, to ensure the maximum effective life of the tubes, and to prevent those using the sunbed receiving excessive levels of UV radiation.
  • the sunbed incorporates a novel arrangement for circulating cooling air around the tubes and incorporates various sensors and monitors enabling a range of characteristics of operation of the bed to be monitored.
  • Electronic control apparatus is provided for co-ordinating the operation of the bed and ensuring appropriate control in light of the output from the sensors and monitors.
  • FIG. 4 there is shown schematically a cross-section of the cover portion 4.
  • a cross section of the couch portion 1 would be a substantially inverted or mirror image version of Figure 4.
  • the couch portion would be constructed somewhat more robustly than the cover portion in light of the fact that the couch portion must support the weight of a user.
  • the actual mechanical construction of both the cover portion and the couch portion is not critical to the present invention and details of such mechanical construction will be well known to those skilled in the art.
  • the cover portion 4 comprises a casing 6, a UV transparent front sheet 7, a generally corrugated reflector 8 and a multiplicity of UV emitting fluorescent tubes 9. It will be appreciated that the exact number of fluorescent tubes will be determined by the designer in light of the required intensity of UV radiation and the output of the particular tubes used.
  • the reflector 8 may be unitary or may be formed as a number of separate components interconnected to provide the overall reflector configuration illustrated in the drawing.
  • the reflector 8 engages, at the crest between each adjacent pair of tubes, the front sheet 7.
  • the front sheet 7 is mechanically supported on the reflector, the crests of the reflector providing support areas for the front sheet which extend substantially the full length of the sunbed.
  • reflector supports (not shown) and front sheet for the cover portion may be identical to that of the couch portion.
  • each tube 9 is located in a separate enclosure 10, each enclosure being in the form of a generally triangular cross-section cylinder two sides of which are formed by the reflector 8 and the third side of which is formed by a portion of the inner surface of the front sheet 7.
  • a single chamber 11 may extend the full length of the sunbed or, if desired, a number of separate chambers dividing the total area of the cover portion longitudinally and/or transversely may be provided.
  • Each chamber 11 has associated therewith at least one fan 12 which is electrically operated to force ambient air from the exterior of the covering 6 into its associated chamber 11.
  • at least one fan 12 which is electrically operated to force ambient air from the exterior of the covering 6 into its associated chamber 11.
  • two fans 12 ( Figure 2) are provided to supply air to the chamber 11.
  • the reflector 8 is formed with a multiplicity of apertures or, preferably, nozzles to permit air to flow from the chamber 11 into the individual enclosures 10 defined between the reflector and the front sheet 7.
  • the nozzles are located adjacent the crests 13 of the reflector which contact the front sheet 7.
  • the apertures are preferably in the form of nozzles so that air flowing from the chamber 11 through the nozzles is specifically directed towards the interior surface of the front sheet 7. This arrangement is particularly desirable since it provides for cooling of the front sheet and avoids direct impingement of cold air onto the surfaces of the tubes 9.
  • the nozzles located adjacent the front sheet 7 at one side of the enclosure are offset from the nozzles at the opposite side of the enclosure.
  • Air entering the enclosures 10 through the nozzles 14 flows axially along the enclosures 10 to exit from the cover portion or couch portion as the case may be through appropriate exit openings 15 located adjacent the ends of the bed.
  • air is drawn by the fans 12 into the chamber 11, flows through the apertures 14, axially along the enclosures 10, and outwardly through the exits 15.
  • an appropriate dust filter may be incorporated immediately upstream or downstream of the fans 12.
  • a number of sensors are provided on or near the tubes to monitor the temperature of the tubes.
  • the output of such sensors is applied to suitable electronic control circuitry to control operation of the fans 12 to maintain optimum temperature conditions for the tubes.
  • suitable electronic control circuitry to control operation of the fans 12 to maintain optimum temperature conditions for the tubes.
  • the preferred embodiment of the invention also includes sensors monitoring the UV output of the tubes.
  • this information is co-ordinated with information as to the expected characteristics of such tubes and information derived from the temperature sensors to vary the optimum temperature which is maintained by the control system to ensure that, so far as possible, a desired standard level of UV emission is maintained throughout the life of the tubes. This will ensure that the amount of UV radiation received by a user in a given period of exposure (e.g. 30 minutes) will be constant regardless of the age of the tubes used.
  • Sensors are also preferably included to be specifically responsive to UV-C radiation and to shut down the bed and inhibit its future use if levels of UV-C radiation rise above prede ermined permissible limits. With a view to guarding against excessive temperature conditions which might arise as a result of failure of the tube temperature sensors or malfunction of the control system, additional sensors responsive to the temperature at the enclosure outlets and the air flow rate through the fans 12 are preferably provided.
  • Such sensors provide redundancy in respect of the tube temperature sensors, and can additionally be used to shut the system down immediately in the event of, for example, fan failure or blockage of the inlet or outlet openings .
  • means are provided for inhibiting starting of the tubes if the temperature of the system is below a predetermined level. This arrangement ensures that the tubes are not used to "warm up” the entire system. Typically, in prior art arrangements the tubes had to be left switched on for, perhaps, 10 minutes in order to warm the entire system up before the UV output of the tubes rose to an acceptable level.
  • auxiliary heating means are provided for heating the system prior to switching on of the tubes.
  • the cooling fans 12 continue to operate after the tubes have been switched off at maximum available flow rate in order to cool the tubes as quickly as possible at the end of each session. This again increases the effective life expectancy of the tubes.
  • the front sheet 7 incorporates or has associated therewith one or more wire mesh screens with a view to increasing the mechanical strength and breakage resistance of the front sheet and with a view to providing an earthed conductor network to ensure effective dissipation of electrostatic charge which would otherwise tend to accumulate on the front sheet.
  • the control device incorporates a count-down timer which is preset to a maximum period of exposure and which counts down from that period as the bed is used.
  • a count-down timer which is preset to a maximum period of exposure and which counts down from that period as the bed is used.
  • an automatic safety timer which is preset to a suitable time (longer than the maximum available from the standard timer) which is considered to be the maximum possible safe period of exposure for the particular level of output of the sunbed.
  • This timer cannot be reset using the ordinary start/stop controls of the bed.
  • the automatic safety timer will operate after a few minutes to shut down the entire system.
  • the automatic safety timer can only be reset by use of a key switch.
  • control panel incorporates a number of indicators to confirm normal operation of the sunbed and to provide alarm indications in the event of failures detected by one or more of the sunbed sensors.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

On décrit un lit à U.V. présentant diverses commandes destinées à assurer un fonctionnement optimal du lit et à empêcher une mauvaise utilisation de celui-ci. Ce lit comprend une multiplicité de tubes (9) émettant un rayonnement ultraviolet, chaque tube étant placé dans une enceinte respective (10) délimitée par la paroi antérieure (7) du lit et un réflecteur (8). On a monté des ventilateurs (12) destinés à souffler, par des ouvertures ou buses, de l'air de refroidissement dans les enceintes (10) du réflecteur afin de refroidir les tubes. La température des tubes est contrôlée et le débit d'air réglé afin de maintenir les tubes à une température optimale de fonctionnement, cette température pouvant varier en fonction de la durée de vie du tube, de façon à ce que ceux-ci, en vieillissant, soient utilisés à une température plus chaude, afin de maintenir un niveau souhaité de sortie des U.V.. De préférence, on a monté des capteurs additionnels afin de débrancher le lit si les niveaux de sortie des U.V.-C dépassent un seuil déterminé, ou si la température du lit s'élève au-dessus d'un seuil déterminé. De préférence, on a monté un minuteur de sûreté commandant un interrupteur à touche, afin d'empêcher la remise en marche du minuteur standard, immédiatement après une période d'utilisation.
PCT/GB1996/001035 1995-04-28 1996-04-29 Lit a u.v. Ceased WO1996033772A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55069/96A AU5506996A (en) 1995-04-28 1996-04-29 Sunbed

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9508640A GB2300253A (en) 1995-04-28 1995-04-28 Sunbeds
GB9508640.1 1995-04-28

Publications (1)

Publication Number Publication Date
WO1996033772A1 true WO1996033772A1 (fr) 1996-10-31

Family

ID=10773669

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/001035 Ceased WO1996033772A1 (fr) 1995-04-28 1996-04-29 Lit a u.v.

Country Status (3)

Country Link
AU (1) AU5506996A (fr)
GB (1) GB2300253A (fr)
WO (1) WO1996033772A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2335265B (en) * 1998-03-10 2001-12-05 Smiths Industries Plc Lamp arrangements
US6223071B1 (en) 1998-05-01 2001-04-24 Dusa Pharmaceuticals Inc. Illuminator for photodynamic therapy and diagnosis which produces substantially uniform intensity visible light
DE29821462U1 (de) 1998-12-01 1999-03-25 SONBEG GmbH, 96052 Bamberg Solarium mit einer Meßeinrichtung zur Messung schädlicher UV-Anteile
WO2005006820A1 (fr) * 2003-06-13 2005-01-20 Ictel, Llc Ballast electronique

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3310213A1 (de) * 1983-03-21 1984-09-27 Mainz & Mauersberger Alu-System GmbH, 4600 Dortmund Vorrichtung zum motorischen heben und senken des oberteiles eines solariums
DE3433603A1 (de) * 1984-09-13 1986-03-20 UWE-Unterwasser-Electric GmbH & Co KG, 7070 Schwäbisch Gmünd Braeunungsgeraet
DE3444793A1 (de) * 1984-12-08 1986-06-12 Evb Entwicklungs Und Vertriebs Braeunungsgeraet
DE3503482A1 (de) * 1985-02-01 1986-08-07 Günter 5208 Eitorf Kuttig Bestrahlungsgeraet zur bestrahlung einer person
WO1987006145A1 (fr) * 1986-04-15 1987-10-22 Solana Ab Dispositif de regulation de la temperature pour appareil de rayonnement
WO1987006146A1 (fr) * 1986-04-15 1987-10-22 Solana Ab Reposoir pour installations d'irradiation
GB2201894A (en) * 1987-02-17 1988-09-14 Caradon Twyfords Ltd Tanning apparatus
DE4001674A1 (de) * 1989-01-26 1990-08-02 Herzmann Solarien Gmbh Bestrahlungsvorrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609273A1 (de) * 1976-03-05 1977-09-08 Mutzhas Maximilian F Bestrahlungseinrichtung mit ultraviolett-strahlenquelle
DE3044929A1 (de) * 1980-11-28 1982-06-03 Siemens AG, 1000 Berlin und 8000 München Bestrahlungsgeraet
DE3413661A1 (de) * 1984-04-11 1985-10-17 JK-Josef Kratz GmbH, 5461 Windhagen Kuehlvorrichtung fuer ein braeunungsgeraet
EP0185139A1 (fr) * 1984-08-29 1986-06-25 Avaris Ag Dispositif d'irradiation ultraviolette
DE3431629A1 (de) * 1984-08-29 1986-03-13 Avaris AG, Zürich Bestrahlungsgeraet
GB8509104D0 (en) * 1985-04-09 1985-05-15 Brien C D S O Suntanning equipment
DE9218498U1 (de) * 1992-08-29 1994-08-04 Sunal Solartechnik Gmbh Vorrichtung zum Bräunen des menschlichen Körpers

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3310213A1 (de) * 1983-03-21 1984-09-27 Mainz & Mauersberger Alu-System GmbH, 4600 Dortmund Vorrichtung zum motorischen heben und senken des oberteiles eines solariums
DE3433603A1 (de) * 1984-09-13 1986-03-20 UWE-Unterwasser-Electric GmbH & Co KG, 7070 Schwäbisch Gmünd Braeunungsgeraet
DE3444793A1 (de) * 1984-12-08 1986-06-12 Evb Entwicklungs Und Vertriebs Braeunungsgeraet
DE3503482A1 (de) * 1985-02-01 1986-08-07 Günter 5208 Eitorf Kuttig Bestrahlungsgeraet zur bestrahlung einer person
WO1987006145A1 (fr) * 1986-04-15 1987-10-22 Solana Ab Dispositif de regulation de la temperature pour appareil de rayonnement
WO1987006146A1 (fr) * 1986-04-15 1987-10-22 Solana Ab Reposoir pour installations d'irradiation
GB2201894A (en) * 1987-02-17 1988-09-14 Caradon Twyfords Ltd Tanning apparatus
DE4001674A1 (de) * 1989-01-26 1990-08-02 Herzmann Solarien Gmbh Bestrahlungsvorrichtung

Also Published As

Publication number Publication date
GB9508640D0 (en) 1995-06-14
AU5506996A (en) 1996-11-18
GB2300253A (en) 1996-10-30

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