US3780327A - Glow discharge starter - Google Patents
Glow discharge starter Download PDFInfo
- 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
- Authority
- 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
Links
Images
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)
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 (ja) |
JP (1) | JPS54711Y2 (ja) |
BE (1) | BE793368A (ja) |
CA (1) | CA964320A (ja) |
DE (1) | DE7149219U (ja) |
FR (1) | FR2166057B1 (ja) |
GB (1) | GB1389355A (ja) |
NL (1) | NL166170C (ja) |
SE (1) | SE377027B (ja) |
Cited By (9)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8002891A (nl) * | 1980-05-20 | 1981-12-16 | Philips Nv | Glimstarter. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2345414A (en) * | 1940-04-25 | 1944-03-28 | Gen Electric | Starting mechanism for fluorescent lamps |
NL7104999A (ja) * | 1971-04-14 | 1972-10-17 |
-
0
- BE BE793368D patent/BE793368A/xx not_active IP Right Cessation
-
1971
- 1971-12-29 DE DE19717149219U patent/DE7149219U/de not_active Expired
-
1972
- 1972-12-15 CA CA159,175A patent/CA964320A/en not_active Expired
- 1972-12-20 US US00316911A patent/US3780327A/en not_active Expired - Lifetime
- 1972-12-26 JP JP1973005205U patent/JPS54711Y2/ja not_active Expired
- 1972-12-27 NL NL7217635.A patent/NL166170C/xx not_active IP Right Cessation
- 1972-12-27 FR FR7246342A patent/FR2166057B1/fr not_active Expired
- 1972-12-27 SE SE7216997A patent/SE377027B/xx unknown
- 1972-12-27 GB GB5963772A patent/GB1389355A/en not_active Expired
Cited By (13)
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 |
---|---|
DE7149219U (de) | 1973-06-14 |
GB1389355A (en) | 1975-04-03 |
BE793368A (fr) | 1973-06-27 |
JPS54711Y2 (ja) | 1979-01-13 |
SE377027B (ja) | 1975-06-16 |
NL166170C (nl) | 1981-06-15 |
NL7217635A (ja) | 1973-07-03 |
JPS4880380U (ja) | 1973-10-02 |
CA964320A (en) | 1975-03-11 |
NL166170B (nl) | 1981-01-15 |
FR2166057B1 (ja) | 1977-09-02 |
FR2166057A1 (ja) | 1973-08-10 |
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