GB2560358A - A halogen lamp - Google Patents

A halogen lamp Download PDF

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Publication number
GB2560358A
GB2560358A GB1703782.1A GB201703782A GB2560358A GB 2560358 A GB2560358 A GB 2560358A GB 201703782 A GB201703782 A GB 201703782A GB 2560358 A GB2560358 A GB 2560358A
Authority
GB
United Kingdom
Prior art keywords
lamp
envelope
infra
filament
halogen 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.)
Withdrawn
Application number
GB1703782.1A
Other versions
GB201703782D0 (en
Inventor
Penman Alan
Ramsdale Charles
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.)
VICTORY LIGHTING UK Ltd
Original Assignee
VICTORY LIGHTING UK 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 VICTORY LIGHTING UK Ltd filed Critical VICTORY LIGHTING UK Ltd
Priority to GB1703782.1A priority Critical patent/GB2560358A/en
Publication of GB201703782D0 publication Critical patent/GB201703782D0/en
Publication of GB2560358A publication Critical patent/GB2560358A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/50—Selection of substances for gas fillings; Specified pressure thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0071—Heating devices using lamps for domestic applications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/032—Heaters specially adapted for heating by radiation heating

Landscapes

  • Resistance Heating (AREA)

Abstract

An infra-red halogen lamp comprises a filament 8 supported within a sealed lamp envelope 1, said lamp envelope containing inert gas including a halogen additive, said lamp envelope including a plurality of alternating SiO2 and TiO2 thin film coatings. The coatings prevent at least some of the visible light emitted by the filament from being transmitted therethrough. Preferably the lamp envelope comprises a tube having two ends, the filament being located axially within the envelope. Preferably the lamp is for use in a radiant heating device.

Description

(71) Applicant(s):
Victory Lighting (UK) Ltd
Unit 3, Eastman Way, Hemel Hempstead,
Hertfordshire, HP2 7DU, United Kingdom (72) Inventor(s):
Alan Penman Charles Ramsdale (56) Documents Cited:
WO 2011/061058 A1 JP 2003059461 A US 20110262116 A1 US 20060050513 A1
WO 2008/139363 A2 US 5138219 A US 20080129174 A1 US 20040211927 A1 (58) Field of Search:
INT CL H01K, H05B Other: Online: WPI, EPODOC (74) Agent and/or Address for Service:
CSY Herts
Helios Court, 1 Bishop Square, Hatfield, HERTFORDSHIRE, AL10 9NE, United Kingdom (54) Title of the Invention: A halogen lamp Abstract Title: A halogen lamp (57) An infra-red halogen lamp comprises a filament 8 supported within a sealed lamp envelope 1, said lamp envelope containing inert gas including a halogen additive, said lamp envelope including a plurality of alternating SiO2 and TiO2 thin film coatings. The coatings prevent at least some of the visible light emitted by the filament from being transmitted therethrough. Preferably the lamp envelope comprises a tube having two ends, the filament being located axially within the envelope. Preferably the lamp is for use in a radiant heating device.
Figure GB2560358A_D0001
1/1
Figure GB2560358A_D0002
Figure GB2560358A_D0003
The present invention relates to halogen incandescent lamps, and in particular it relates to halogen lamps that are suitable for use in radiant heating devices such as heaters which may be used outside.
Halogen lamps generally have a sealed, tubular envelope or bulb in which is located tungsten filament. The envelope is filled with an inert gas having a halogen additive. The envelope is made of high temperature glass such as quartz or fused silica. The envelope is sealed by pinching an open end about an electrically conducting foil connector, to form a hermetically sealed gas filled cavity within the envelope. Such halogen lamps may be used for providing heating outdoors in cold weather.
Often a gold coating is applied to the inside of the quartz envelope to reflect infrared radiation towards a target area. Some infra-red halogen lamps emit bright visible light and can be too bright for the eyes.
Summary of the Invention
According to a first aspect of the present invention there is provided an infra-red halogen lamp comprising a filament supported within a sealed lamp envelope, said lamp envelope containing inert gas including a halogen additive, said lamp envelope including a plurality of alternating S1O2 and TiO? thin film coatings.
The alternating SiOs and TiO2 thin film layers prevent at least some of the visible light emitted by the filament from being transmitted therethrough.
A sufficient number of alternating coating layers may be applied to the lamp envelope until sufficient visible light being transmitted through the coatings is removed to leave a gentle soothing glow.
Preferably the lamp envelope comprises a linear tube.
Preferably the lamp envelope comprises a tube having two ends, the filament being located axially within the envelope.
Preferably the lamp is for use in a radiant heating device.
Preferably the lamp envelope is made of fused silica or quartz.
According to a further aspect of the invention there is also provided a radiant heating device comprising an infra-red halogen lamp according to the first aspect of the invention.
A preferred embodiment of the present invention will now be more particularly described, by way of example, with reference to the accompanying drawing, wherein:
Figure 1 shows a side elevation of an infra-red halogen lamp.
The present embodiments represent currently the best ways known to the applicant of putting the invention into practice. But they are not the only ways in which this can be achieved. They are illustrated, and they will now be described, by way of example only.
Referring to figure 1, an infra-red halogen lamp is shown having a linear, tube shaped bulb or envelope 1 made of high temperature glass. Preferably the envelope 1 is made of fused silica. The envelope may be made of other material having a suitably high melting point such as quartz, borasilicate or aluminosilicate. The envelope 1 defines a hermetically sealed cavity, filled with inert gas such as argon or nitrogen, together with a halogen additive such as bromine or iodine.
An elongate tungsten filament 8 is supported within the envelope 1, the filament 8 extending longitudinally along the axis of the envelope. Preferably a coiled tungsten filament is used. The filament 8 is supported within the envelope by a plurality of filament supports 9.
The envelope is sealed. At least one end of the tungsten filament 8 is attached to an electrically conducting sealing foil 4 and the or each sealing foil is embedded in a respective pinch seal of the envelope. Preferably the sealing foil(s) 4 are thin, planar sheets of molybdenum. The tungsten filament 8 is electrically coupled to the or each sealing foil 4 via an internal lead 6, such as a wound tail of the filament.
The lamp produces infra-red radiation, but also produces visible light. In certain embodiments the lamp may produce 6 lumens per watt of visible light, and such a lamp would be too bright for heating people as it would be uncomfortably bright to the eyes. The envelope has a plurality of alternating silicon dioxide and titanium dioxide thin film coatings. A sufficient number of alternating coating layers is applied to the envelope until sufficient visible light being transmitted through the coatings is removed to leave a gentle soothing glow.
The lamp may be incorporated in a radiant heating device such as an outdoor heater.
Although described above with respect to specified embodiments, the present invention may be embodied in numerous different ways as embraced within the claims that follow.

Claims (7)

Claims
1. An infra-red halogen lamp comprising a filament supported within a sealed lamp envelope, said lamp envelope containing inert gas including a halogen additive,
5 said lamp envelope including a plurality of alternating S1O2 and TiO2 thin film coatings.
2. An infra-red halogen lamp according to claim 1, wherein the lamp envelope comprises a linear tube.
3. An infra-red halogen lamp according to any preceding claim, wherein the lamp envelope comprises a tube having two ends, the filament being located axially within the envelope.
15
4. An infra-red halogen lamp according to any preceding claim, wherein the lamp is for use in a radiant heating device.
5. An infra-red halogen lamp according to any preceding claim, wherein the lamp envelope is made of fused silica or quartz.
6. A radiant heating device comprising an infra-red halogen lamp according to any previous claim.
7. An infra-red halogen lamp or radiant heating device substantially as hereinbefore
25 described with reference to any suitable combination of the accompanying drawings.
Intellectual
Property
Office
Application No: GB1703782.1 Examiner: Mr Tony Oldershaw
GB1703782.1A 2017-03-09 2017-03-09 A halogen lamp Withdrawn GB2560358A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1703782.1A GB2560358A (en) 2017-03-09 2017-03-09 A halogen lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1703782.1A GB2560358A (en) 2017-03-09 2017-03-09 A halogen lamp

Publications (2)

Publication Number Publication Date
GB201703782D0 GB201703782D0 (en) 2017-04-26
GB2560358A true GB2560358A (en) 2018-09-12

Family

ID=58605402

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1703782.1A Withdrawn GB2560358A (en) 2017-03-09 2017-03-09 A halogen lamp

Country Status (1)

Country Link
GB (1) GB2560358A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138219A (en) * 1989-07-19 1992-08-11 General Electric Company Optical interference coating and lamps using same
JP2003059461A (en) * 2001-08-10 2003-02-28 Stanley Electric Co Ltd Infrared light projecting electric lamp and vehicular sighting fixture having the electric lamp
US20040211927A1 (en) * 2003-04-25 2004-10-28 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Infrared radiator and irradiation apparatus
US20060050513A1 (en) * 2004-08-27 2006-03-09 Schott Ag Night-vision headlamp
US20080129174A1 (en) * 2005-02-07 2008-06-05 Reinhard Schafer Nir Incandescent Lamp
WO2008139363A2 (en) * 2007-05-09 2008-11-20 Philips Intellectual Property & Standards Gmbh System comprising an infrared radiation source and an infrared radiation sensor
WO2011061058A1 (en) * 2009-11-18 2011-05-26 Osram Gesellschaft mit beschränkter Haftung Thermal radiator having selective spectral filtering
US20110262116A1 (en) * 2008-07-25 2011-10-27 Speziallampenfabrik Dr. Fischer Gmbh Infrared filter of a light source for heating an object

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138219A (en) * 1989-07-19 1992-08-11 General Electric Company Optical interference coating and lamps using same
JP2003059461A (en) * 2001-08-10 2003-02-28 Stanley Electric Co Ltd Infrared light projecting electric lamp and vehicular sighting fixture having the electric lamp
US20040211927A1 (en) * 2003-04-25 2004-10-28 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh Infrared radiator and irradiation apparatus
US20060050513A1 (en) * 2004-08-27 2006-03-09 Schott Ag Night-vision headlamp
US20080129174A1 (en) * 2005-02-07 2008-06-05 Reinhard Schafer Nir Incandescent Lamp
WO2008139363A2 (en) * 2007-05-09 2008-11-20 Philips Intellectual Property & Standards Gmbh System comprising an infrared radiation source and an infrared radiation sensor
US20110262116A1 (en) * 2008-07-25 2011-10-27 Speziallampenfabrik Dr. Fischer Gmbh Infrared filter of a light source for heating an object
WO2011061058A1 (en) * 2009-11-18 2011-05-26 Osram Gesellschaft mit beschränkter Haftung Thermal radiator having selective spectral filtering

Also Published As

Publication number Publication date
GB201703782D0 (en) 2017-04-26

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