EP0238200A2 - Protecteur pour tube de lumière et tube - Google Patents

Protecteur pour tube de lumière et tube Download PDF

Info

Publication number
EP0238200A2
EP0238200A2 EP87301274A EP87301274A EP0238200A2 EP 0238200 A2 EP0238200 A2 EP 0238200A2 EP 87301274 A EP87301274 A EP 87301274A EP 87301274 A EP87301274 A EP 87301274A EP 0238200 A2 EP0238200 A2 EP 0238200A2
Authority
EP
European Patent Office
Prior art keywords
tube
light tube
light
sheath
protector
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Withdrawn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
EP87301274A
Other languages
German (de)
English (en)
Other versions
EP0238200A3 (fr
Inventor
Robert Alexander Mclauchlan
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 EP0238200A2 publication Critical patent/EP0238200A2/fr
Publication of EP0238200A3 publication Critical patent/EP0238200A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/03—Arrangements for preventing or mitigating effects of implosion of vessels or containers

Definitions

  • This invention relates to a light tube protector.
  • light tube is intended to cover all types of fluorescent light source in which a glass enve­lope of tubular form encloses a low-pressure gas, through which an electric discharge is maintained to emit light which may be in the visible or ultraviolet spectral range.
  • the invention is concerned with relatively low power light tubes, typically of less than 200 Watts, rather than high power industrial process light sources which emit considerable heat.
  • the invention was primarily devised for use with ultra violet light sources used in sun beds and solaria. However, it may equally be applic­able to conventional fluorescent lighting tubes.
  • Light tubes may be of substantial length, for exam­ple l.8 metres long, and have a tubular glass envelope containing a suitable gas at below atmospheric pressure. If a tube is damaged it may collapse inwardly or "im­plode", scattering slivers of glass with considerable force.
  • Light tubes are carefully manufactured to high stan­dards so that shattering of the tube is a rare occurrence but nevertheless it can happen and is particularly hazardous in some circumstances.
  • the tubes may be only a short distance away from the user who would be unprotected if one of the tubes were to shatter in use.
  • moving parts may approach lighting units with a risk of the tubes being struck and damaged.
  • a light tube protector comprising a sheath of flexible transpa­rent or translucent sheet-like plastics material which is adapted to contact a light tube and at least partly to enclose it.
  • the sheath of plastics material is tubular.
  • the sheath may be in the form of a flat sheet adapted to be wrapped around the tube and secured.
  • the sheath may be deposited directly from molten plastics material or a solution of a plastics material.
  • the surface of the sheath may have continuous con­tact with the light tube. Alternatively, it may contact the light tube at regularly spaced positions or may loosely surround the light tube and make contact at random positions.
  • Contact at spaced positions can be achieved by pro­viding surface ridges or other formations on the inner surface of the sheath of plastics material, or by sepa­rate spacers.
  • the sheet may be apertured to define a network of contact points.
  • the plastics material may be polyvinyl chloride (PVC), acrylic, cellulose or polyethylene.
  • the plastics material may be tinted to provide colouring effects or may include pigments adapted to absorb particular parts of the spectrum emitted by the light tube.
  • Partial transparencies may be inserted between the sheet and the tube carrying indicia such as instructions for use, advertising material or a name or trade mark.
  • the plastics material itself may also be printed prior to being applied to the light tube.
  • FIG. l a simple form of light tube protector is illustrated.
  • a loose tubular sheath l0 of polyethylene film is pro­vided.
  • a light tube ll is inserted within the polye­thlene sheath l0 so that only the end caps l2 of the tube project. The light tube is then used in the normal manner.
  • the loose polyethylene sleeve may be secured in place at the ends of the tube, for example by adhesive on the tube, adhesive tape applied externally, or by being tied in position by an external tie.
  • External circlips or internally-disposed expanding fixing rings may also be used for securing the sleeve to the tube, the latter also serving as spacers.
  • FIGS 2 and 3 of the drawings illustrate an alter­native form of light tube protector.
  • a PVC sleeve l4 which may be an extrusion, is placed over the light tube and heat is applied either externally, or by the tube itself being operated, which causes the PVC sleeve l4 to shrink onto the surface of the tube ll.
  • This sleeve l4 contacts the surface of the tube so that, in effect, the PVC is laminated onto the tube.
  • Spacers in the form of internal ribs or formations l5 can be provided in the sleeve l4, during extrusion. Where such spacers are provided, contact is made between the PVC extrusion and the light tube but the rest of the extrusion is slightly spaced from the light tube. This reduces the tendency for further shrinkage of the extru­ sion when the light tube is used and its surface becomes warm.
  • the spacers also allow ventilation of the tube.
  • Figure 4 of the drawings illustrates an alternative form of protector being placed onto a light tube.
  • a tubular polyvinyl chloride skin l6 is expanded, with compressed air introduced at the end l7 of the sleeve for example, and the light tube ll is fed into the expanded PVC sleeve l6. The air pressure is released so that the PVC skin is restored to its normal unexpanded size and contacts the light tube.
  • a semi-flex­ible extruded acrylic sleeve is slid onto the tube. It may be a close sliding fit or may have integral internal spacers formed during extrusion.
  • Figure 5 of the drawings illustrates an alternative semi-flexible acrylic sleeve which is provided with per­forations.
  • the sheet l8 therefore takes on the charac­teristics of a "net" which will serve to contain a shat­tering light tube without entirely enclosing it.
  • a perforated plastics material is used, there is unlikely to be significant absorption of light from the tube.
  • the characteristics of the light may be altered by the plastics material, for example to give a warmer tint to fluorescent light or to absorb some part of the spectrum of an ultraviolet emitter. In this case, no perforations would be provided in the plastics material.
  • the sheath is made of a self-shrinking material such as cellulose.
  • a self-shrinking material such as cellulose.
  • This has the property of expanding by absorp­tion when soaked in water, returning to its normal size on drying.
  • a protector of such a self-shrinking material has the advantage that it can be supplied for fitment to existing tubes by the end user, or to a distributor or warehouse outlet for fitment to standard light tubes, rather than being applied to the tubes by the manufactu­rer.
  • Cellulose can also be printed in one or full colour with instructions or a trade mark picture or pattern for example.
  • a sheath of another material such as PVC there may be some advantage in using self-shrinking tubular end caps of cellulose for instance, to secure the sheath to the light tube without other fixing. In parti­cular, this serves to cover any gap between the sheath and the end caps.
  • Such a gap might exist using some plastics materials which are excellent for the transmis­sion of ultra violet light but which may not withstand the increased temperature occurring at each end of the light tube in use.
  • the gap may also be closed by a metal or ceramic cylinder section which may be moulded or extruded to connect the circular metal terminal fitting of the light tube to the plastics material. This must be done in such a way that if the light tube is broken, the glass remains contained.
  • the glass envelope of the light tube tends to become warm in use and it is therefore necessary to select the plastics material and the type of construction carefully so that the protection afforded by the plastics is re­tained throughout the life of the tube.
  • grades of plastics having resistance to ultraviolet deg­radation are to be preferred.
  • the use of spacers in the form of ribs or wrinkles inside the plastics material can extend the life to be expected from it because the plas­tics material only contacts the tube at the position of the spacers.
  • spacers may be initially integral with the plastics sleeve.
  • Separate spacers may be put on the light tube before the plastics material is added.
  • these may comprise rings or a spiral of plastics or metal mounted on the tube.
  • the invention is not suitable for application to high powered tubes which generate very large quantities of heat, such as those used in applying ultra-violet light in industrial processes. In this case, it is frequently necessary to provide water jackets and similar assisted cooling for the light tube.
  • the type of protec­tor envisaged by the present invention is not appropriate in these cases and is intended only for use with light tubes of relatively low power, typically less than 200 Watts, reaching no more than l20° Celsius.
  • the invention is not limited to light fitments in the form of straight tubes but also covers curved, coiled or circular fluorescent lamps of generally known type and coloured display tubes of neon and similar types.
  • plastics material While it is convenient for the plastics material to be in a tubular form, a similar effect may be achieved using a laminar sheet which is wrapped round the light source and secured in position by adhesive, by adhesive tape or mechanically by tying or clipping.
  • the film may be of an adhesive type which will adhere directly to the tube or of a self-adhering type which can be secured in position by overlapping the edges of the sheet about the light tube.
  • the light tube can be dipped in a molten plastics material or a solution of a plastics material in a suitable fast evaporating solvent.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
EP87301274A 1986-02-19 1987-02-13 Protecteur pour tube de lumière et tube Withdrawn EP0238200A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868604117A GB8604117D0 (en) 1986-02-19 1986-02-19 Light tube protector
GB8604117 1986-02-19

Publications (2)

Publication Number Publication Date
EP0238200A2 true EP0238200A2 (fr) 1987-09-23
EP0238200A3 EP0238200A3 (fr) 1989-08-23

Family

ID=10593332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87301274A Withdrawn EP0238200A3 (fr) 1986-02-19 1987-02-13 Protecteur pour tube de lumière et tube

Country Status (2)

Country Link
EP (1) EP0238200A3 (fr)
GB (2) GB8604117D0 (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890350A1 (fr) 1997-07-08 1999-01-13 The Procter & Gamble Company Articles absorbants jetables comprenant une couche arrière en tissu imité ayant une perméabilité différentielle au gaz et son procédé de production
EP1303868A1 (fr) * 2000-07-24 2003-04-23 Inc. Thermoplastic Processes Lampes fluorescentes a l'epreuve de l'eclatement
US6573423B1 (en) 1997-06-25 2003-06-03 The Procter & Gamble Company Disposable absorbent articles maintaining low vapor phase moisture content
WO2003059224A1 (fr) 2001-12-28 2003-07-24 Sca Hygiene Products Ab Article absorbant
US7172585B2 (en) 2001-07-03 2007-02-06 Sca Hygiene Products Ab Absorbent product
WO2007123491A1 (fr) * 2006-04-21 2007-11-01 Daniel Muessli Lumière électrique
US7481802B2 (en) 2001-12-28 2009-01-27 Sca Hygiene Products Ab Absorbent article
WO2009074008A1 (fr) * 2007-11-30 2009-06-18 Zhaoyang Jin Dispositif de rangement de médicaments chimiluminescents à enveloppe de protection et dispositif chimiluminescent utilisant une telle enveloppe
US7662138B2 (en) 2001-12-28 2010-02-16 Sca Hygiene Products Ab Absorbent article
US7799007B2 (en) 2001-12-28 2010-09-21 Sca Hygiene Products Ab Absorbent article with two-piece construction and method of making the same
US20110291563A1 (en) * 2010-05-26 2011-12-01 General Electric Company Safety protection solution for compact fluorescent lamps
US8138388B2 (en) 1994-11-28 2012-03-20 The Procter & Gamble Company Absorbent article and method for maintaining or improving skin health
WO2016065008A1 (fr) 2014-10-21 2016-04-28 The Procter & Gamble Company Procédé permettant d'améliorer l'aspect de la peau
WO2017070077A1 (fr) 2015-10-22 2017-04-27 The Procter & Gamble Company Timbre barrière d'un film expansé et procédés pour améliorer l'aspect de la peau
WO2018129496A1 (fr) 2017-01-09 2018-07-12 The Procter & Gamble Company Timbre barrière comportant un film soluble et procédés pour améliorer l'aspect de la peau
WO2018129493A1 (fr) 2017-01-09 2018-07-12 The Procter & Gamble Company Patch barrière à film soluble
WO2018129494A1 (fr) 2017-01-09 2018-07-12 The Procter & Gamble Company Timbre barrière avec film soluble et procédés pour améliorer l'aspect de la peau
WO2018237214A1 (fr) 2017-06-22 2018-12-27 The Procter & Gamble Company Films de masques de beauté comprenant une couche hydrosoluble et un revêtement déposé par évaporation sous vide
WO2019183010A1 (fr) 2018-03-19 2019-09-26 The Procter & Gamble Company Procédé de fabrication d'un timbre barrière à film soluble
US10537499B2 (en) 2015-10-22 2020-01-21 The Procter & Gamble Company Barrier patch of a foamed film and methods of improving skin appearance
US10576023B2 (en) 2015-10-22 2020-03-03 The Procter & Gamble Company Barrier patch of a foamed film and methods of improving skin appearance

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5064553A (en) * 1989-05-18 1991-11-12 Colgate-Palmolive Co. Linear-viscoelastic aqueous liquid automatic dishwasher detergent composition
US5053158A (en) * 1989-05-18 1991-10-01 Colgate-Palmolive Company Linear viscoelastic aqueous liquid automatic dishwasher detergent composition
US5124618A (en) * 1989-11-16 1992-06-23 Matsushita Electronics Corporation Shatter-proof fluorescent lamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1382617A (fr) * 1964-02-14 1964-12-18 Tishman Res Corp Dispositifs de lampes à décharge
US4048537A (en) * 1976-06-04 1977-09-13 Gte Sylvania Incorporated Protective ultraviolet-transmitting sleeve for fluorescent lamp
US4147947A (en) * 1978-01-31 1979-04-03 Westinghouse Electric Corp. Fluorescent lamp with integral thermal-insulating plastic jacket
EP0104594A2 (fr) * 1982-09-23 1984-04-04 GTE Products Corporation Lampe à double enveloppe.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE435108A (fr) * 1938-06-27
GB753230A (en) * 1953-08-28 1956-07-18 Cecil Arthur John King Improvements in and relating to electric indicator lamps
GB852728A (en) * 1959-07-31 1960-11-02 Stavros George Martoudis Improvements in or relating to electrical discharge tubes
GB1029147A (en) * 1963-02-15 1966-05-11 Tishman Res Corp Vapor lamp units
US3426234A (en) * 1966-02-15 1969-02-04 Aiden Kk Explosion-proof fluorescent lamp apparatus
US3602759A (en) * 1966-10-12 1971-08-31 Westinghouse Electric Corp Electric lamp with protective enclosure having shrunk plastic retaining means
US3798481A (en) * 1972-10-20 1974-03-19 Thermoplastic Processes Inc Fluorescent lamp heat shield
US4332329A (en) * 1977-10-25 1982-06-01 Ppg Industries, Inc. Implosion coatings

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1382617A (fr) * 1964-02-14 1964-12-18 Tishman Res Corp Dispositifs de lampes à décharge
US4048537A (en) * 1976-06-04 1977-09-13 Gte Sylvania Incorporated Protective ultraviolet-transmitting sleeve for fluorescent lamp
US4147947A (en) * 1978-01-31 1979-04-03 Westinghouse Electric Corp. Fluorescent lamp with integral thermal-insulating plastic jacket
EP0104594A2 (fr) * 1982-09-23 1984-04-04 GTE Products Corporation Lampe à double enveloppe.

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8420883B2 (en) 1994-11-28 2013-04-16 The Procter & Gamble Company Absorbent article and method for maintaining or improving skin health
US8138388B2 (en) 1994-11-28 2012-03-20 The Procter & Gamble Company Absorbent article and method for maintaining or improving skin health
US6573423B1 (en) 1997-06-25 2003-06-03 The Procter & Gamble Company Disposable absorbent articles maintaining low vapor phase moisture content
US6686512B2 (en) 1997-06-25 2004-02-03 The Procter & Gamble Company Disposable absorbent articles maintaining low vapor phase moisture content
EP0890350A1 (fr) 1997-07-08 1999-01-13 The Procter & Gamble Company Articles absorbants jetables comprenant une couche arrière en tissu imité ayant une perméabilité différentielle au gaz et son procédé de production
EP1303868A1 (fr) * 2000-07-24 2003-04-23 Inc. Thermoplastic Processes Lampes fluorescentes a l'epreuve de l'eclatement
EP1303868A4 (fr) * 2000-07-24 2004-03-17 Custom Spectrum Lighting Llc Lampes fluorescentes a l'epreuve de l'eclatement
US7172585B2 (en) 2001-07-03 2007-02-06 Sca Hygiene Products Ab Absorbent product
US7481802B2 (en) 2001-12-28 2009-01-27 Sca Hygiene Products Ab Absorbent article
US7662138B2 (en) 2001-12-28 2010-02-16 Sca Hygiene Products Ab Absorbent article
US7799007B2 (en) 2001-12-28 2010-09-21 Sca Hygiene Products Ab Absorbent article with two-piece construction and method of making the same
US7797810B2 (en) 2001-12-28 2010-09-21 Sca Hygiene Products Ab Method of manufacturing absorbent article
WO2003059224A1 (fr) 2001-12-28 2003-07-24 Sca Hygiene Products Ab Article absorbant
WO2007123491A1 (fr) * 2006-04-21 2007-11-01 Daniel Muessli Lumière électrique
WO2009074008A1 (fr) * 2007-11-30 2009-06-18 Zhaoyang Jin Dispositif de rangement de médicaments chimiluminescents à enveloppe de protection et dispositif chimiluminescent utilisant une telle enveloppe
US20110291563A1 (en) * 2010-05-26 2011-12-01 General Electric Company Safety protection solution for compact fluorescent lamps
US8264130B2 (en) * 2010-05-26 2012-09-11 General Electric Company Safety protection solution for compact fluorescent lamps
WO2016065008A1 (fr) 2014-10-21 2016-04-28 The Procter & Gamble Company Procédé permettant d'améliorer l'aspect de la peau
WO2016065006A1 (fr) 2014-10-21 2016-04-28 The Procter & Gamble Company Kit permettant d'améliorer l'aspect de la peau
US10537498B2 (en) 2015-10-22 2020-01-21 The Procter & Gamble Company Barrier patch of a foamed film and methods of improving skin appearance
US10537499B2 (en) 2015-10-22 2020-01-21 The Procter & Gamble Company Barrier patch of a foamed film and methods of improving skin appearance
US10576023B2 (en) 2015-10-22 2020-03-03 The Procter & Gamble Company Barrier patch of a foamed film and methods of improving skin appearance
WO2017070077A1 (fr) 2015-10-22 2017-04-27 The Procter & Gamble Company Timbre barrière d'un film expansé et procédés pour améliorer l'aspect de la peau
WO2018129495A1 (fr) 2017-01-09 2018-07-12 The Procter & Gamble Company Patch formant barrière à film soluble et méthodes permettant d'améliorer l'aspect de la peau
WO2018129496A1 (fr) 2017-01-09 2018-07-12 The Procter & Gamble Company Timbre barrière comportant un film soluble et procédés pour améliorer l'aspect de la peau
WO2018129494A1 (fr) 2017-01-09 2018-07-12 The Procter & Gamble Company Timbre barrière avec film soluble et procédés pour améliorer l'aspect de la peau
WO2018129493A1 (fr) 2017-01-09 2018-07-12 The Procter & Gamble Company Patch barrière à film soluble
US10751265B2 (en) 2017-01-09 2020-08-25 The Procter & Gamble Barrier patch with soluble film and methods of improving skin appearance
US10799431B2 (en) 2017-01-09 2020-10-13 The Procter & Gamble Company Barrier patch with soluble film and methods of improving skin appearance
US10806681B2 (en) 2017-01-09 2020-10-20 The Procter & Gamble Company Barrier patch with soluble film and methods of improving skin appearance
US10857076B2 (en) 2017-01-09 2020-12-08 The Procter & Gamble Company Barrier patch with soluble film and methods of improving skin appearance
WO2018237214A1 (fr) 2017-06-22 2018-12-27 The Procter & Gamble Company Films de masques de beauté comprenant une couche hydrosoluble et un revêtement déposé par évaporation sous vide
US10959918B2 (en) 2017-06-22 2021-03-30 The Procter & Gamble Company Films including a water-soluble layer and a vapor-deposited coating
WO2019183010A1 (fr) 2018-03-19 2019-09-26 The Procter & Gamble Company Procédé de fabrication d'un timbre barrière à film soluble
US10751266B2 (en) 2018-03-19 2020-08-25 The Procter & Gamble Company Method of making a barrier patch with soluble film

Also Published As

Publication number Publication date
GB8604117D0 (en) 1986-03-26
EP0238200A3 (fr) 1989-08-23
GB8703329D0 (en) 1987-03-18
GB2187037A (en) 1987-08-26

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