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WO2000029780A1 - Torche plate et son procede de fabrication - Google Patents

Torche plate et son procede de fabrication Download PDF

Info

Publication number
WO2000029780A1
WO2000029780A1 PCT/GB1999/003819 GB9903819W WO0029780A1 WO 2000029780 A1 WO2000029780 A1 WO 2000029780A1 GB 9903819 W GB9903819 W GB 9903819W WO 0029780 A1 WO0029780 A1 WO 0029780A1
Authority
WO
WIPO (PCT)
Prior art keywords
torch
cover bag
lamp housing
flat
lamp
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/GB1999/003819
Other languages
English (en)
Inventor
Iain Sinclair
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 WO2000029780A1 publication Critical patent/WO2000029780A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L2/00—Systems of electric lighting devices

Definitions

  • This invention relates to a flat torch and to a method of manufacture thereof.
  • a known flat torch has a substrate carrying a flat battery and miniature incandescent lamps enclosed within a cover having a cut-out in which is located a light transmitting insert through which in use light from the lamps is emitted.
  • a primary object of the present invention is to provide an improved and simpler construction of torch and a method of making the same.
  • a flat torch comprising a lamp housing, a flat battery, a switch and a cover bag enclosing said lamp housing, battery and switch except for an opening for light emission, the cover bag being peripherally sealed and sealed at its opening around the lamp housing.
  • a method of manufacture of a flat torch according to which a lamp housing is wired to a switch and to a flat battery to produce an assembly which is then enclosed within a cover bag having an opening for light emission, and the cover bag is sealed at its periphery and at its opening around the lamp housing.
  • the lamp housing may carry one or more lamps, preferably a single incandescent lamp.
  • one or more white LEDs may be employed.
  • the use of a single incandescent lamp is preferred, the use of a single white LED can be made possible by the invention subject of our copending Application No. 9807768.8 , according to which an LED with high internal resistance greater than 10 ohms at 50 mA current is overrun in excess of the nominal rated maximum voltage and current levels, causing the LED to emit much more light than is conventional without reducing its working life.
  • the cover bag may be glued or welded to seal its periphery and effect a seal around the lamp housing, dependent on the cover bag material, which typically may be thin card, thick paper, plastics sheet or metallic foil.
  • the cover bag requires to be electrically insulated at least from the flat battery contact wired to the lamp housing, for which purpose an area of insulation may be printed on the interior surface of the cover bag.
  • an area of insulation may be printed on the interior surface of the cover bag.
  • the metallic foil it is also possible to use the metallic foil to complete the circuit path through the lamp and battery, utilising the flat cover bag as one contact of the switch, operable by virtue of the flexibility of the foil.
  • An insulating foam or other electric, insulating insert may be used normally to hold the switch contacts apart.
  • a conventional dome switch may be employed for operation of the torch.
  • a foil cover bag its contacts will be electrically insulated from the bag.
  • a reflective strip may be incorporated behind the lamp to improve the illumination provided by the torch.
  • the lamp housing itself will preferably be a clear plastics body which is produced by injection moulding.
  • a Lanyard/Euroslot cut-out may be provided adjacent the end of the torch opposite to the lamp housing, enabling the torch to be hung up when not in use.
  • Figures 1A, IB, IC, ID and IE are respectively a front end view, a side view, an edge view, a rear end view and a perspective view of the torch, as seen on the exterior;
  • Figures 2A, 2B and 2C are respectively a front end view, a side view and an edge view of the torch, showing the interior components.
  • the flat, thin torch 10 is rectangular in shape, with a bulge of increased thickness adjacent the centre of its front end, where a lamp housing 12 incorporating a lamp 14 is accommodated.
  • a Eurohook cut-out 16 is provided in the torch centrally adjacent its rear end.
  • the torch 10 comprises a cover bag 18, which may be of thin cardboard, thick paper or plastics sheet, but is preferably of metallic foil.
  • the cover bag 18 is made of a sheet having a folded rear end edge 20, and side edges 22 sealed by gluing or welding.
  • the cover bag 18 also has an opening 24, where the two sides of the sheet are sealed by gluing or welding around the lamp housing 12.
  • the lamp housing 12 is a component of clear plastics material produced by injection moulding and it carries a reflective strip 26 behind a single lamp 14, which is preferably an incandescent lamp.
  • the lamp may be an LED of unusually high internal resistance, enabling it to be run at voltage and current ratings exceeding its nominal ratings, in according with the invention of our copending Patent Application No. 9807768.8.
  • a flat battery 32 and an associated thin switch mechanism 34 are also enclosed within the cover bag 18.
  • the lamp contacts of the lamp housing 12 are respectively wired, as indicated at 36, 38, to one contact of the switch mechanism 34 and to one contact 40 of the battery 32.
  • the switch mechanism 34 may be a conventional thin dome switch, but may be differently constituted if a metallic foil cover is employed.
  • the foil cover 18 may be employed as one contact of the switch mechanism, with a stick-on foam insert 42 incorporated normally to keep the switch contacts apart. Operation of the torch is then enabled by squeezing the cover bag, utilising the flexibility of the metallic foil.
  • the arrangement requires electrical insulation of the foil cover 18 from the contact of the flat battery 32 wired to the lamp housing 12, for which purpose insulation 44 can be printed on the interior surface of the foil cover.
  • cover bag 18 of metallic foil It is not essential to the invention to employ a cover bag 18 of metallic foil.
  • a thin dome switch can be employed inside a cover bag of thin card, thick paper or plastics sheet. It is of course desirable that the cover bag 18 is formed from, or coated with, an impermeable material so as to prevent the ingress of liquids (such as water) inside the torch. Both the metallic foil and the plastics sheet have the advantage of making the torch fully waterproof as well as crashproof.
  • a plastics or foil cover bag can also be sealed by welding, whereas a card or paper cover bag would be sealed by gluing. The sealing of the cover bag 18 around the periphery and around the lamp housing is desirably such as to effect an hermetic seal.
  • the exterior surface of the casing of the flat torch may be printed with advertising or other informative material.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Push-Button Switches (AREA)

Abstract

L'invention porte sur une torche plate (10) comportant un boîtier (12) porte-lampe, une pile plate (32), un interrupteur (34) et une enveloppe (18) entourant ledit boîtier et ledit interrupteur à l'exception d'une ouverture laissant passer la lumière, ladite enveloppe étant scellée sur sa périphérie, autour du boîtier de la lampe.
PCT/GB1999/003819 1998-11-18 1999-11-17 Torche plate et son procede de fabrication Ceased WO2000029780A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9825136.6A GB9825136D0 (en) 1998-11-18 1998-11-18 Flat torch and manufacture thereof
GB9825136.6 1998-11-18

Publications (1)

Publication Number Publication Date
WO2000029780A1 true WO2000029780A1 (fr) 2000-05-25

Family

ID=10842557

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/003819 Ceased WO2000029780A1 (fr) 1998-11-18 1999-11-17 Torche plate et son procede de fabrication

Country Status (2)

Country Link
GB (1) GB9825136D0 (fr)
WO (1) WO2000029780A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004010047A1 (fr) * 2002-07-19 2004-01-29 Skylight Ag Lampe de poche
WO2004025168A1 (fr) * 2002-09-16 2004-03-25 Peter Moser Lampe de poche comprenant au moins une diode electroluminescente en tant que source lumineuse
WO2004088204A1 (fr) * 2003-04-03 2004-10-14 Eveready Battery Company, Inc. Dispositif d'eclairage ou lampe torche
AU2004225899B2 (en) * 2003-04-03 2008-12-04 Energizer Brands, Llc A flashlight or lighting device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521833A (en) * 1983-08-20 1985-06-04 Heinz Wolter Light
FR2638219A1 (fr) * 1988-10-26 1990-04-27 Bascoul Olivier Lampe de poche miniaturisee du type comportant un boitier d'epaisseur faible par rapport a ses autres dimensions
GB2314150A (en) * 1995-11-27 1997-12-17 Iain Sinclair Planar disposable flashlight
WO1998050730A1 (fr) * 1997-05-02 1998-11-12 Eveready Battery Company, Inc. Carte emettrice de lumiere

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521833A (en) * 1983-08-20 1985-06-04 Heinz Wolter Light
FR2638219A1 (fr) * 1988-10-26 1990-04-27 Bascoul Olivier Lampe de poche miniaturisee du type comportant un boitier d'epaisseur faible par rapport a ses autres dimensions
GB2314150A (en) * 1995-11-27 1997-12-17 Iain Sinclair Planar disposable flashlight
WO1998050730A1 (fr) * 1997-05-02 1998-11-12 Eveready Battery Company, Inc. Carte emettrice de lumiere

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004010047A1 (fr) * 2002-07-19 2004-01-29 Skylight Ag Lampe de poche
WO2004025168A1 (fr) * 2002-09-16 2004-03-25 Peter Moser Lampe de poche comprenant au moins une diode electroluminescente en tant que source lumineuse
WO2004088204A1 (fr) * 2003-04-03 2004-10-14 Eveready Battery Company, Inc. Dispositif d'eclairage ou lampe torche
US7393117B2 (en) 2003-04-03 2008-07-01 Eveready Battery Company, Inc. Flashlight or lighting device
AU2004225899B2 (en) * 2003-04-03 2008-12-04 Energizer Brands, Llc A flashlight or lighting device
CN100483022C (zh) * 2003-04-03 2009-04-29 永备电池有限公司 闪光灯或者发光装置

Also Published As

Publication number Publication date
GB9825136D0 (en) 1999-01-13

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