US3780327A - Glow discharge starter - Google Patents

Glow discharge starter Download PDF

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Publication number
US3780327A
US3780327A US00316911A US3780327DA US3780327A US 3780327 A US3780327 A US 3780327A US 00316911 A US00316911 A US 00316911A US 3780327D A US3780327D A US 3780327DA US 3780327 A US3780327 A US 3780327A
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US
United States
Prior art keywords
glow discharge
fuse
starter
tubular part
effected
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.)
Expired - Lifetime
Application number
US00316911A
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English (en)
Inventor
A Vervaart
C Verheij
H Jongerius
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.)
US Philips Corp
Original Assignee
US Philips Corp
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 US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3780327A publication Critical patent/US3780327A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/06—Starting switches thermal only
    • H05B41/08—Starting switches thermal only heated by glow discharge

Definitions

  • GLOW DISCHARGE STARTER lnventors Adrianus-Petrus Vervaart; Cornelis Machiel Verheij; Hermanus Maria Jongerius, all of Emmasingel, Eindhoven, Netherlands U.S. Philips Corporation, New York, NY.
  • ABSTRACT The invention relates to a glow discharge starter which is provided with a built-in fuse.
  • the invention relates to a glow discharge starter provided with two connection members and a fuse for rendering a tubular part of the starter, in which the glow discharge is effected, inoperative, said fuse being provided in a satisfactory thermal contact with the said tubular part and also including a resilient member which is under a mechanical pretension.
  • Glow discharge starters of thiskind are used, for example, for the ignition of low-pressure mercury vapour discharge lamps which are provided with two so-called preheated electrodes.
  • the glow discharge starter is placed in a connection between one end of one electrode and one end of the other electrode.
  • the fuse is responsive to a too large thermal development in the tubular part of the starter (the dis charge tube) so that this part of the starter is permanently switched off. This is effected in the case of a defeet.
  • a drawback of the known glow discharge starter is, however, that the fuse is complicated and is secured in a complicated manner and that furthermore upon melting of the suitable part of the fuse the resilient member performs a movement which is at right angles to the wall of the discharge tube.
  • This simplies that either the contact distance of the electrical contacts of the excited fuse (having operated) can only be rather small which with a view to the conventional relatively high mains voltages of, for example, a few hundred volts may be dangerous and may notably lead to electrical flashover, or that at right angles to the actual discharge tube a relatively large space must be economized to make a large contact distance of the excited fuse possible.
  • An object of the invention is to provide a glowdischarge starter of the kind described in the preamble in which the contact distance of the excited fuse is relatively large but in which also the space required for this fuse in the excited state involves only a slight dimension in a direction at right angles to the wall of the discharge tube.
  • the melting part of the fuse is secured both to a connecting conductor which leads to the tubular part in which the glow discharge takes place and to a bent spring one end of which is secured to one of the said connection members and whose bend is oriented in such a manner that the direction of the mechanical pretension at the area of the melting part is substantially located in a tangent plane to the tubular part at that area.
  • An advantage of a glow discharge starter according to the invention is its compact structure and also the simple construction of the fuse.
  • a glow discharge starter according to the invention in which the combination of the fuse and the tubular part in which the glow discharge is effected is provided with a jacket enveloping this combination, the entire jacket is made of an insulating synthetic material.
  • An advantage of this preferred embodiment is that possible risk of fire of these glow discharge starters provided with synthetic material housings can be eliminated by the fuse. It is to be noted that the use of a synthetic material jacket for glow' discharge starters is known per se.
  • FIG. 1 shows a glow discharge starter according to the invention.
  • FIG. 1 the glow discharge starter is shown in a front view in which a jacket associated with the starter is shown in a longitudinal cross-section.
  • FIG. 2 shows a perspective view of the glow discharge starter (partly exploded view).
  • the reference numeral 1 denotes a tubular part in view a glow discharge can be generated.
  • this tube is filled with a mixture of rare gases, for example, argon, neon and helium and has two bimetal electrodes one of which is shown in broken lines (see 1a). These electrodes bend towards each other when heat is developed by the glow discharge in tube 1. Normally these contacts will contact each other some time after the commencement of the glow discharge so that then a preheating current can flow in a lamp (not shown) to be ignited by this starter.
  • connection 2 is electrically connected through a connection 2 of copperclad wire to the connection member 3.
  • Connection 2 passes through an insulation plate (4a) of synthetic material which, combined with a jacket 4 entirely consisting of synthetic material, constitutes a complete envelope for the arrangement.
  • a further conductor 5 leads from the other bimetal electrode (not shown in FIG. 1) in the tube 1 to a metal compound 6 having a low melting point, for example, a soldered joint of tin, lead, cadmium.
  • the other end of this metal compound 6 is secured to a semicircularly bent spring 7 which is secured to a further connection member 8 of the glow discharge starter.
  • the bend of the spring 7 is located substantially in a tangent plane at the area of the compound 6 to the cylindrical outer wall of the tube 1. Consequently the direction of the pulling force exerted by the spring 7 on the metal compound 6 (mechanical pre-tension) is also located in this tangent plane. ln the case described this force acts approximately parallel to the longitudinal axis of the tubular part 1.
  • An advantage of the starter described over a starter in which the discharge tube 1 is short-circuited in case of an interference is that in the case of the described starter an excitation of the fuse renders the entire preheating circuit without current.
  • a capacitor possibly connected in parallel with the discharge tube 1 and arranged within the jacket 4 may also be switched off by the fuse.
  • the bend of the spring may substantially entirely envelop the discharge tube 1 with the plane of the conductor which leads to the tubular part in which the glow discharge is effected as well as to a bent spring one end of which is secured to one of the said connection members and whose bend is oriented in such a manner that the direction of the mechanical pretension at the area of the melting part is substantially located in a tangent plane to the tubular part at that area.
  • a glow discharge starter as claimed in claim 1 in which the combination of the fuse and the tubular part in which the glow discharge is effected is provided with a jacket enveloping said combination characterized in that the entire jacket is made of an insulating synthetic material.

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Fuses (AREA)
US00316911A 1971-12-29 1972-12-20 Glow discharge starter Expired - Lifetime US3780327A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19717149219U DE7149219U (de) 1971-12-29 1971-12-29 Glimmstarter

Publications (1)

Publication Number Publication Date
US3780327A true US3780327A (en) 1973-12-18

Family

ID=6626029

Family Applications (1)

Application Number Title Priority Date Filing Date
US00316911A Expired - Lifetime US3780327A (en) 1971-12-29 1972-12-20 Glow discharge starter

Country Status (9)

Country Link
US (1) US3780327A (de)
JP (1) JPS54711Y2 (de)
BE (1) BE793368A (de)
CA (1) CA964320A (de)
DE (1) DE7149219U (de)
FR (1) FR2166057B1 (de)
GB (1) GB1389355A (de)
NL (1) NL166170C (de)
SE (1) SE377027B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910427A (en) * 1988-12-28 1990-03-20 North American Philips Corporation Glow starter holder with protection against R.F. overheating
US4912370A (en) * 1988-11-28 1990-03-27 Gte Products Corporation Glow discharge starter containing cylindrical capacitor
US4959589A (en) * 1988-11-28 1990-09-25 Gte Products Corporation Glow discharge starter having discharge extinguishing means
US6531810B2 (en) 2000-02-03 2003-03-11 Koninklijke Philips Electronics N.V. Electric load
US20060028315A1 (en) * 2004-08-04 2006-02-09 Uchihashi Estec Co., Ltd. Thermosensor, thermoprotector, and method of producing a thermosensor
US20070030110A1 (en) * 2005-08-02 2007-02-08 Uchihashi Estec Co., Ltd. Thermoprotector
US20070046418A1 (en) * 2005-08-30 2007-03-01 Eaton Corporation Electrical distribution device including protection for overheating conditions
WO2008037639A1 (de) * 2006-09-28 2008-04-03 Osram Gesellschaft mit beschränkter Haftung Starter für eine niederdruckentladungslampe
US20090251200A1 (en) * 2008-04-02 2009-10-08 Littlefuse, Inc. Master fuse module

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8002891A (nl) * 1980-05-20 1981-12-16 Philips Nv Glimstarter.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345414A (en) * 1940-04-25 1944-03-28 Gen Electric Starting mechanism for fluorescent lamps
NL7104999A (de) * 1971-04-14 1972-10-17

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912370A (en) * 1988-11-28 1990-03-27 Gte Products Corporation Glow discharge starter containing cylindrical capacitor
US4959589A (en) * 1988-11-28 1990-09-25 Gte Products Corporation Glow discharge starter having discharge extinguishing means
US4910427A (en) * 1988-12-28 1990-03-20 North American Philips Corporation Glow starter holder with protection against R.F. overheating
US6531810B2 (en) 2000-02-03 2003-03-11 Koninklijke Philips Electronics N.V. Electric load
US7385474B2 (en) * 2004-08-04 2008-06-10 Uchihashi Estec Co., Ltd. Thermosensor, thermoprotector, and method of producing a thermosensor
US20060028315A1 (en) * 2004-08-04 2006-02-09 Uchihashi Estec Co., Ltd. Thermosensor, thermoprotector, and method of producing a thermosensor
US20070030110A1 (en) * 2005-08-02 2007-02-08 Uchihashi Estec Co., Ltd. Thermoprotector
US7345570B2 (en) * 2005-08-02 2008-03-18 Uchihashi Estec Co., Ltd. Thermoprotector
US20070046418A1 (en) * 2005-08-30 2007-03-01 Eaton Corporation Electrical distribution device including protection for overheating conditions
US7400225B2 (en) * 2005-08-30 2008-07-15 Eaton Corporation Electrical distribution device including protection for overheating conditions
WO2008037639A1 (de) * 2006-09-28 2008-04-03 Osram Gesellschaft mit beschränkter Haftung Starter für eine niederdruckentladungslampe
US20090251200A1 (en) * 2008-04-02 2009-10-08 Littlefuse, Inc. Master fuse module
US7990738B2 (en) 2008-04-02 2011-08-02 Littelfuse, Inc. Master fuse module

Also Published As

Publication number Publication date
NL7217635A (de) 1973-07-03
JPS54711Y2 (de) 1979-01-13
CA964320A (en) 1975-03-11
SE377027B (de) 1975-06-16
NL166170B (nl) 1981-01-15
JPS4880380U (de) 1973-10-02
DE7149219U (de) 1973-06-14
FR2166057B1 (de) 1977-09-02
BE793368A (fr) 1973-06-27
FR2166057A1 (de) 1973-08-10
GB1389355A (en) 1975-04-03
NL166170C (nl) 1981-06-15

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