EP0534728A1 - Kompakte Entladungslampe mit von Thermo-Verwaltungs-Charakteristik - Google Patents

Kompakte Entladungslampe mit von Thermo-Verwaltungs-Charakteristik Download PDF

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Publication number
EP0534728A1
EP0534728A1 EP19920308649 EP92308649A EP0534728A1 EP 0534728 A1 EP0534728 A1 EP 0534728A1 EP 19920308649 EP19920308649 EP 19920308649 EP 92308649 A EP92308649 A EP 92308649A EP 0534728 A1 EP0534728 A1 EP 0534728A1
Authority
EP
European Patent Office
Prior art keywords
circuit board
lamp
discharge lamp
circuit
base
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
EP19920308649
Other languages
English (en)
French (fr)
Inventor
Michael Martin Minarczyk
Spiro Vamvakas
Louis Robert Nerone
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of EP0534728A1 publication Critical patent/EP0534728A1/de
Ceased 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
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H01J61/523—Heating or cooling particular parts of the lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp

Definitions

  • the present invention is related to co-filed European Patent Application No. (Our ref: L.10276) "Electronic Ballast Arrangement for a Compact Fluorescent Lamp".
  • This invention relates to a compact discharge lamp which exhibits improved thermal management properties.
  • the circuit board can be mounted horizontally relative to an upright mounted lamp and that such board mounting occurs at the topmost portion of the housing base, that is, such mounting occurs at the point furthest from the electrical connection to the screw base.
  • the present invention provides in one aspect a discharge lamp having a lamp base and being operable using power line current, said discharge lamp comprising: a lamp member extending from said lamp base; a ballast circuit disposed within said lamp base and having circuit means including a group of circuit elements effective to energize said lamp member to a discharge state; and mounting means disposed within said lamp base and having mounted thereon, at least two of said group of circuit elements, said mounting means contacting said lamp base in a manner such that said lamp base acts as a heat sink for said ballast circuit.
  • the present invention provides in a further aspect a compact fluorescent discharge lamp having an electronic ballast disposed within a housing base and operable using power line current, said compact fluorescent discharge lamp comprising: a tubular lamp member extending from said housing base; circuit means including a group of circuit elements for driving said tubular lamp member to a discharge state; and means for mounting said circuit means within said housing base in a vertical orientation relative to said discharge lamp being mounted in an upright position.
  • the present invention provides in a further aspect a discharge lamp operable using power line current, comprising: a discharge lamp member; a housing base from which said discharge lamp extends on one end and further having secured thereto, means for connecting to said power line current; a ballast circuit having elements effective so as to produce a resonant operating signal for driving said discharge lamp member to a discharge state; and mounting means disposed within said housing base and being effective for supporting thereon, at least some of said elements of said ballast circuit, said mounting means further being in thermal contact with said connecting means of said housing base such that heat generated by said ballast circuit can be at least partially dissipated by said connecting means.
  • the present invention provides for a thermal management arrangement for the ballasting circuit of a discharge lamp, particularly when such discharge lamp is a compact fluorescent type in which an electronic ballast is disposed within a housing base adaptable for use in a standard type of light socket and wherein the electronic ballast circuit is designed so as to operate at a high operating frequency.
  • the thermal management properties of the present invention further allow for the spacing of the necessary components of the ballast circuit in an arrangement that provides as compact a profile for the housing base as possible and at the same time provides necessary spacing within the housing base so that thermal convection currents can flow around the components of the ballast circuit.
  • a discharge lamp having a ballast circuit associated therewith which during operation, generates heat that is dissipated in a more efficient manner as a result of the improved thermal management properties of the present invention.
  • the discharge lamp includes an electronic ballast circuit arrangement which is disposed on a printed circuit board positioned within the ballast housing in a manner whereby the ballast housing itself, and more particularly, the portion of the ballast housing furthest from the lamp is utilized for purposes of dissipating heat.
  • the printed circuit board is configured in substantially the same design as a crosswise section of the housing base such that the printed circuit board contacts and is supported by the sides of the housing base when the printed circuit board is mounted in a vertical orientation relative to the discharge lamp being installed in an upright manner.
  • the crosswise design of the circuit board further includes a bottom extending portion which conforms in shape to the portion of the housing base on which the screw base is disposed.
  • the positioning of the highest heat generating components occur at the lowermost portion of the circuit board and gradually spacing the next highest heat generating components in a hierarchal manner further up on the circuit board. It is also possible that, although the previous discussion has been directed to the use of the thermal properties improvements of the present invention being applied in a compact fluorescent product situation, the present invention in its basic-format can be applied to any ballast circuit for a discharge lamp in which it is desirable to control the thermal performance characteristics in a close quartered environment.
  • Fig. 1 is an elevational view partly in sectional form of a discharge lamp exhibiting improved thermal properties and constructed in accordance with the present invention.
  • Fig. 2 is an elevational view of a circuit board configuration on which an electronic ballast circuit can be mounted for improved thermal management purposes according to the present invention.
  • Fig. 3 is a sectional view of a discharge lamp and circuit board arrangement achieving the improved thermal management properties of the present invention.
  • the discharge lamp having improved thermal management properties is shown in the form of a compact fluorescent type of discharge lamp 10 having a housing base 12 in which a ballast circuit (not shown) is disposed.
  • a ballast circuit (not shown) is disposed.
  • the subject matter disclosed and claimed as follows applies equally as well to other types of discharge lamps utilizing ballast circuits for which thermal management is an important design consideration.
  • the actual circuit and operation of the lamp ballast for which the improved thermal management properties of the present invention are directed can be achieved by a variety of techniques one of which is the above cross-referenced co-filed application No. (L10276).
  • the housing base 12 for the compact discharge lamp 10 is in a generally conical shape which is of a general size and configuration that allows for the insertion of the compact fluorescent lamp 10 into a standard light socket; other shapes such as a tapered cylindrical configuration would also be appropriate.
  • Disposed at the bottom portion of the housing base 12 is a standard Edison type screw base 14. Because of the manufacturing advantages of using an automated injection molding process, the housing base 12 will be constructed typically of a plastic material.
  • a top cap member 16 made of the same material as the housing base 12 secures to the housing base 12 by means of a snap or other type of closure arrangement and is further effective for closing off the inner cavity region 18 of the housing base 12.
  • the top cap member 16 also serves to support the tubular lamp member 20 which extends upward therefrom.
  • any multiple axis compact fluorescent lamp can be utilized such as for instance, a quad (4-axis) or hex (6-axis) product.
  • ballast circuit mounting member 22 Disposed within the cavity 18 of the housing base 12 is a ballast circuit mounting member 22 which is configured in a shape substantially in conformance with the shape of the housing base 12.
  • the ballast circuit mounting member 22, or circuit board 22 as it will be described in the discussion of fig. 2 includes a bottom extending portion 22a which is essentially square shaped and is sized so as to fit securely within the bottom portion of the housing base 12 on which the screw base 14 is secured. In this manner, the circuit board extends down into the bottommost portion of the housing so as to be in thermal contact with the screw base thereby allowing the screw base to act as a heat sink for the electronic ballast circuit of the present invention.
  • the vertically oriented printed circuit board can be supported on its side periphery by contacting the inside portion of the housing base and on its top portion as well by way of a circular support member secured in a horizontal manner within the housing base.
  • a circular support member secured in a horizontal manner within the housing base.
  • ballast circuit mounting member 22 As it is mounted within the housing base 12. Such orientation is made relative to the discharge lamp 10 being mounted in an upright position; that is, the discharge lamp 10 will be mounted such that the tubular lamp member 20 will extend upright and the screw base 14 will be disposed in the downward direction.
  • the discharge lamp 10 can be oriented in other directions rather than merely an upright one, in such an instance, the ballast circuit mounting member 22 will change in orientation along with the discharge lamp 10.
  • a circularly shaped support member 24 is disposed in the top cap member 16 of the housing base 12 and the circuit board 22 is attached thereto for such horizontal support.
  • top cap member 16 is inserted into the housing base 12 so that the circuit board 22 will then be in contact with the inner wall of the cavity 18. In this manner, the circuit board 22 is supported both in the vertical direction by contacting the housing base 12 and in the horizontal direction by the support gained in the connection to the circular support member 24.
  • the horizontal support provided to the circuit board 22 by way of the circular support member 24 can also be provided by a direct connection of the circuit board 22 to a portion of the top cap member 16 and thereby preclude the need for a separate support member 24.
  • the manufacturing step of connecting the lamp 20 to the circuit board 22 and then the circuit board 22 to the screw base 14 has been simplified.
  • a significant length of bare wire would be needed to connect the circuit board to the socket and such an arrangement may be prone to experiencing a short circuit condition when the lamp is finally assembled.
  • circuit board 22 With a vertically disposed circuit board 22, it is possible to use short lengths of bare inlead wires to make the connection from the circuit board 22 to the lamp 20 and from the circuit board 22 to the screw base 14 thereby avoiding the risk,of experiencing a short circuit condition during final lamp assembly.
  • the ballast circuit shown generally as reference 26 is disposed on the circuit board 22 in a manner such that the various components 28 are all electrically interconnected by circuit board runs 30.
  • the component representation 28 of fig. 2 is of a general nature and is meant to include as being covered thereby, an electronic ballast arrangement using high frequency switching devices, a rectifier circuit, a resonance circuit and a circuit for generating the control signal which controls the switching operation of the high speed switching devices.
  • the high speed switching devices for purposes to be discussed hereinafter in further detail, are designated reference 32 and can be disposed on the opposite side of the circuit board 22 as other components 28.
  • circuit board 22 has formed at the upper or widest portion thereof, respective tab members 36 which can contact either the circular support member 24 or a portion of the top cap member 16 so that the horizontal support of the circuit board 22 as previously discussed, can be accomplished.
  • the components 28 which comprise the ballast circuit 26 can be selectively located in a hierarchal manner on the circuit board 22 according to the heat generating capabilities of the specific components.
  • the components 28 of the ballast circuit 26 are higher heat generating devices which require more dissipation capabilities than other components and because heat can be more readily dissipated at the lowermost portion of the housing base 12, it would be thermally advantageous to place the highest heat generating components 28 at the bottom of the circuit board 22.
  • a further thermal management consideration is achieved by the present invention in that, as previously noted, certain electronic ballast circuits for discharge lamps employ high speed switching devices which can generate a noticeable amount of heat, noise or other interference that affects other components in the ballast circuit 26.
  • the present invention by allowing the placement of some components on opposite sides of the circuit board 22 as other components, allows an amount of isolation between such noise or interference generating components and those components which may be adversely affected by such noise/interference. As shown by the phantom representation of a component 32 of the ballast circuit 26 being disposed on opposite sides as components 28, a further thermal advantage is attained.
  • the discharge lamp 10 of the present invention which exhibits improved thermal management properties is illustrated wherein the circuit board 22 is in thermal contact with the screw base 14.
  • the heat sinking capabilities of the metallic screw base 14 are utilized more directly than would a circuit board arrangement disposed in a circumferential manner near the top portion of a housing base for a compact fluorescent or other type of discharge lamp.
EP19920308649 1991-09-26 1992-09-23 Kompakte Entladungslampe mit von Thermo-Verwaltungs-Charakteristik Ceased EP0534728A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US766608 1985-08-16
US76660891A 1991-09-26 1991-09-26

Publications (1)

Publication Number Publication Date
EP0534728A1 true EP0534728A1 (de) 1993-03-31

Family

ID=25076959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920308649 Ceased EP0534728A1 (de) 1991-09-26 1992-09-23 Kompakte Entladungslampe mit von Thermo-Verwaltungs-Charakteristik

Country Status (3)

Country Link
EP (1) EP0534728A1 (de)
JP (1) JPH05251053A (de)
CA (1) CA2076126A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622822A1 (de) * 1993-04-16 1994-11-02 TUNGSRAM Részvénytársaság Einseitig gesockelte Niederdruckentladungslampe
EP0646947A1 (de) * 1993-10-04 1995-04-05 General Electric Company Entladungslampe mit einer Lampenhülle mit einer texturierten versiegelten Region und Verfahren zu dessen Herstellung
DE19505476A1 (de) * 1995-02-17 1996-08-22 Walter Holzer Kompaktleuchtstofflampe in Adapterausführung
EP0694956A3 (de) * 1994-07-20 1997-12-10 TUNGSRAM Részvénytársaság Entladungslampe
WO2000022651A1 (de) * 1998-10-14 2000-04-20 Daniel Muessli Energiesparlampe mit elektronischem vorschaltgerät
WO2008140894A1 (en) 2007-05-10 2008-11-20 General Electric Company Compact fluorescent lamp with outer envelope and method for manufacturing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771018A (en) * 1972-05-05 1973-11-06 Gen Electric Discharge lamp containing bridge rectifier
EP0191742A2 (de) * 1985-02-12 1986-08-20 Lumalampan Aktiebolag Anordnung in elektrischen Entladungslampen
EP0349083A1 (de) * 1988-07-01 1990-01-03 Koninklijke Philips Electronics N.V. Elektrische Lampe
DE4021420A1 (de) * 1989-07-05 1991-01-17 Narva Gluehlampen Einseitig gesockelte kompakte leuchtstofflampe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8005112A (nl) * 1980-09-11 1982-04-01 Philips Nv Lagedrukkwikdampontladingslamp.
US4668891A (en) * 1984-12-12 1987-05-26 Rca Corporation Pickup tube having a mesh assembly with field modifying means
JPS6229001A (ja) * 1985-07-30 1987-02-07 東芝ライテック株式会社 蛍光灯器具の光源ユニツト

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771018A (en) * 1972-05-05 1973-11-06 Gen Electric Discharge lamp containing bridge rectifier
EP0191742A2 (de) * 1985-02-12 1986-08-20 Lumalampan Aktiebolag Anordnung in elektrischen Entladungslampen
EP0349083A1 (de) * 1988-07-01 1990-01-03 Koninklijke Philips Electronics N.V. Elektrische Lampe
DE4021420A1 (de) * 1989-07-05 1991-01-17 Narva Gluehlampen Einseitig gesockelte kompakte leuchtstofflampe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622822A1 (de) * 1993-04-16 1994-11-02 TUNGSRAM Részvénytársaság Einseitig gesockelte Niederdruckentladungslampe
EP0646947A1 (de) * 1993-10-04 1995-04-05 General Electric Company Entladungslampe mit einer Lampenhülle mit einer texturierten versiegelten Region und Verfahren zu dessen Herstellung
EP0694956A3 (de) * 1994-07-20 1997-12-10 TUNGSRAM Részvénytársaság Entladungslampe
CN1083151C (zh) * 1994-07-20 2002-04-17 通斯兰姆有限公司 放电灯
DE19505476A1 (de) * 1995-02-17 1996-08-22 Walter Holzer Kompaktleuchtstofflampe in Adapterausführung
WO2000022651A1 (de) * 1998-10-14 2000-04-20 Daniel Muessli Energiesparlampe mit elektronischem vorschaltgerät
US6548948B1 (en) * 1998-10-14 2003-04-15 7Ton Holding Ag Energy saving lamp with electronic ballast
WO2008140894A1 (en) 2007-05-10 2008-11-20 General Electric Company Compact fluorescent lamp with outer envelope and method for manufacturing
US7459856B1 (en) 2007-05-10 2008-12-02 General Electric Company Compact fluorescent lamp with outer envelope and method for manufacturing

Also Published As

Publication number Publication date
CA2076126A1 (en) 1993-03-27
JPH05251053A (ja) 1993-09-28

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