EP0987737A1 - Leuchtstofflampe - Google Patents
Leuchtstofflampe Download PDFInfo
- Publication number
- EP0987737A1 EP0987737A1 EP99112629A EP99112629A EP0987737A1 EP 0987737 A1 EP0987737 A1 EP 0987737A1 EP 99112629 A EP99112629 A EP 99112629A EP 99112629 A EP99112629 A EP 99112629A EP 0987737 A1 EP0987737 A1 EP 0987737A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge tube
- fluorescent lamp
- electrode
- lamp according
- thermally conductive
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
-
- 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
Definitions
- the invention is based on a fluorescent lamp according to the preamble of claim 1.
- the temperature is the Cold spot where the excess mercury condenses and which ensures an optimal luminous flux during lamp operation to an ambient temperature of approx. 25 ° C.
- the cold spot lies in the Center of the discharge tube on the inner glass wall.
- the task should be accomplished with simple means and no fundamental changes to the lamp structure Have consequence.
- the heat-conducting material preferably consists of a heat-conducting material Coating on the outer wall of the discharge tube or from a thermally conductive Foil covering the discharge tube in this area over the entire surrounds outer circumference. Preference is also given to the others melted electrode on the outside of the glass tube such a heat conductive Material applied or attached.
- the thermally conductive material should at least extend from the electrode coil to the edge of the base sleeve. Even better it is when the heat-conducting material over towards the center of the glass tube the electrode coil extends and - in the case of a film - with the Base sleeve is soldered or welded. In the case of a heat-conducting film it preferably contains aluminum or copper.
- a straight fluorescent lamp 1 is partially in accordance with the invention cut and shortened form reproduced.
- the fluorescent lamp 1 with a power consumption of 54 W has a discharge tube 2 made of glass with an outer diameter of 16 mm and a length of 1150 mm, in the two ends of which an electrode 3, 4 on one Foot 5, 6 is melted.
- the foot 5 of one electrode 3 is 20 mm longer, so that the coil 7 of one electrode 3 by 20 mm further is removed from the associated end of the discharge tube 2 as the filament 8 the other electrode 4.
- the fluorescent lamp 1 also has one - not shown for clarity Fluorescent coating on the inside of the discharge tube 2.
- this fluorescent lamp 1 corresponds to one Fluorescent lamp for indoor use, being behind in indoor use the electrode coil 7 on the longer foot 5 a cooling point (Cold Spot) with a temperature of 40 ° C at an ambient temperature of approx. 35 ° C and thus ensures optimal luminous flux emission.
- Cold Spot Cold Spot
- the two ends of the discharge tube 2 are one Strokes from a copper-aluminum foil 15, 16 of approximately 0.1 mm thick surrounded, the 5 mm (from the center of the discharge tube 2 towards the end seen) in front of the respective electrode coil 7, 8 and about 5 mm Base sleeve 11, 12 overlaps.
- These additional film sleeves 15, 16 turn a fluorescent lamp for indoor use a fluorescent lamp for outdoor use created.
- the film sleeves 15, 16 ensure a during operation strong heating of the interior behind the electrode coils 7, 8, see above that now the cold spot in the middle of the discharge tube 2 on the inner wall trains.
- the cold junction receives one for outdoor use Ambient temperature of approx. 5 ° C during operation a temperature of approx. 40 ° C, so that an optimal luminous flux is set at this outside temperature.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
Claims (8)
- Leuchtstofflampe (1) für die Außenbeleuchtung bestehend aus einem geraden oder kreisförmig gebogenen Entladungsrohr (2) aus Glas mit einem kreisförmigem Querschnitt von kleiner gleich 26 mm Außendurchmesser, eine in jedes Ende des Entladungsrohrs (2) eingeschmolzene Elektrode (3, 4), wobei eine Elektrode (3) in einem etwas größeren Abstand zum Ende des Entladungsrohrs (2) als die andere Elektrode (4) angeordnet ist, so daß sich hinter dieser Elektrode eine Kühlstelle ausbilden kann, einer Leuchtstoffbeschichtung auf der Innenwand des Entladungsrohrs (2) und einer Quecksilber-Edelgas-Füllung sowie jeweils einen an beiden Enden des Entladungsrohrs (2) angebrachten Sockel (9, 10) mit mindestens einem Sockelstift (13, 14) und einer Sockelhülse (11, 12), dadurch gekennzeichnet daß zumindest im Bereich der einen in einem etwas größeren Abstand zum Ende des Entladungsrohrs (2) eingeschmolzenen Elektrode (3) außen auf dem Entladungsrohr (2) ein gut wärmeleitendes Material angebracht ist.
- Leuchtstofflampe nach Anspruch 1, dadurch gekennzeichnet, daß auch im Bereich der anderen eingeschmolzenen Elektrode (4) außen auf dem Entladungsrohr (2) ein gut wärmeleitendes Material angebracht ist.
- Leuchtstofflampe nach Anspruch 1, dadurch gekennzeichnet, daß das wärmeleitende Material aus einer wärmeleitenden Beschichtung besteht.
- Leuchtstofflampe nach Anspruch 1, dadurch gekennzeichnet, daß das wärmeleitende Material aus einer wärmeleitenden Folie (15, 16) besteht.
- Leuchtstofflampe nach Anspruch 1, dadurch gekennzeichnet, daß das wärmeleitende Material mindestens von der Wendel (7, 8) der Elektrode (3, 4) bis zum inneren Rand der Sockelhülse (11, 12) reicht.
- Leuchtstofflampe nach Anspruch 5, dadurch gekennzeichnet, daß das wärmeleitende Material das Entladungsrohr (2) über den gesamten äußeren Umfang umgibt.
- Leuchtstofflampe nach Anspruch 1, dadurch gekennzeichnet, daß die wärmeleitende Folie (15, 16) Aluminium und/oder Kupfer enthält.
- Leuchtstofflampe nach Anspruch 3, dadurch gekennzeichnet, daß die wärmeleitende Folie mit der Sockelhülse verlötet oder verschweißt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19842795 | 1998-09-18 | ||
DE19842795A DE19842795A1 (de) | 1998-09-18 | 1998-09-18 | Leuchtstofflampe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0987737A1 true EP0987737A1 (de) | 2000-03-22 |
EP0987737B1 EP0987737B1 (de) | 2013-01-09 |
Family
ID=7881402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99112629A Expired - Lifetime EP0987737B1 (de) | 1998-09-18 | 1999-07-02 | Leuchtstofflampe |
Country Status (4)
Country | Link |
---|---|
US (1) | US6359376B1 (de) |
EP (1) | EP0987737B1 (de) |
CA (1) | CA2282219C (de) |
DE (1) | DE19842795A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7279840B2 (en) | 2004-11-17 | 2007-10-09 | Matsushita Electric Works Ltd. | Electrodeless fluorescent lamp with controlled cold spot temperature |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2795553A1 (fr) * | 1999-06-28 | 2000-12-29 | Koninkl Philips Electronics Nv | Lampe a incandescence comprenant une ampoule en verre de forme tubulaire dans laquelle est dispose axialement un filament |
DE10120667B4 (de) * | 2001-04-27 | 2007-11-22 | Siteco Beleuchtungstechnik Gmbh | Leuchte mit einer Lampe mit gekühlter Kaltfußstelle |
DE20307607U1 (de) * | 2003-05-15 | 2004-09-23 | Zumtobel Staff Gmbh | Beleuchtungsanordnung bestehend aus einer Gasentladungslampe und einer Abschirmhülse |
KR101157289B1 (ko) * | 2005-06-30 | 2012-06-15 | 엘지디스플레이 주식회사 | 백라이트 어셈블리 및 이를 갖는 액정표시장치 |
KR20070010844A (ko) * | 2005-07-20 | 2007-01-24 | 삼성전자주식회사 | 면광원 장치 및 이를 구비한 표시 장치 |
US7612491B2 (en) * | 2007-02-15 | 2009-11-03 | Applied Materials, Inc. | Lamp for rapid thermal processing chamber |
WO2008142630A1 (en) * | 2007-05-24 | 2008-11-27 | Philips Intellectual Property & Standards Gmbh | Discharge lamp and headlights for a motor vehicle |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB955076A (en) * | 1958-11-25 | 1964-04-15 | Egyesuelt Izzolampa | Improvements in gas discharge lamps |
EP0330808A1 (de) * | 1988-03-02 | 1989-09-06 | Lumalampan Aktiebolag | Niederdruckgasentladungslampe |
JPH03114138A (ja) * | 1989-09-28 | 1991-05-15 | Matsushita Electron Corp | 蛍光ランプ |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1915019A (en) * | 1931-09-08 | 1933-06-20 | Gen Electric | Gaseous electric discharge device |
US2491854A (en) * | 1946-04-06 | 1949-12-20 | Gen Electric | Starting strip for electric discharge devices |
HU176380B (en) * | 1978-05-12 | 1981-02-28 | Egyesuelt Izzolampa | Electric discharge tube,preferably high-pressure sodium vapour or metal halogen vapour lamp with outdoor applicability,with a device controlling the temperature distribution of the discharge space |
JPH067559Y2 (ja) * | 1988-06-20 | 1994-02-23 | 旭光学工業株式会社 | ランプの点灯構造 |
US5952768A (en) * | 1994-10-31 | 1999-09-14 | General Electric Company | Transparent heat conserving coating for metal halide arc tubes |
JPH0917383A (ja) * | 1995-06-26 | 1997-01-17 | Matsushita Electric Works Ltd | 蛍光ランプ |
US5680000A (en) * | 1995-11-07 | 1997-10-21 | Osram Sylvania Inc. | Reflective metal heat shield for metal halide lamps |
EP0913628A3 (de) * | 1997-10-31 | 2001-05-16 | Toshiba Lighting & Technology Corporation | Beleuchtungseinrichtung |
US5808418A (en) * | 1997-11-07 | 1998-09-15 | Honeywell Inc. | Control mechanism for regulating the temperature and output of a fluorescent lamp |
-
1998
- 1998-09-18 DE DE19842795A patent/DE19842795A1/de not_active Withdrawn
-
1999
- 1999-07-02 EP EP99112629A patent/EP0987737B1/de not_active Expired - Lifetime
- 1999-08-26 US US09/383,979 patent/US6359376B1/en not_active Expired - Fee Related
- 1999-09-15 CA CA002282219A patent/CA2282219C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB955076A (en) * | 1958-11-25 | 1964-04-15 | Egyesuelt Izzolampa | Improvements in gas discharge lamps |
EP0330808A1 (de) * | 1988-03-02 | 1989-09-06 | Lumalampan Aktiebolag | Niederdruckgasentladungslampe |
JPH03114138A (ja) * | 1989-09-28 | 1991-05-15 | Matsushita Electron Corp | 蛍光ランプ |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 311 (E - 1098) 8 August 1991 (1991-08-08) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7279840B2 (en) | 2004-11-17 | 2007-10-09 | Matsushita Electric Works Ltd. | Electrodeless fluorescent lamp with controlled cold spot temperature |
Also Published As
Publication number | Publication date |
---|---|
EP0987737B1 (de) | 2013-01-09 |
DE19842795A1 (de) | 2000-03-23 |
US6359376B1 (en) | 2002-03-19 |
CA2282219C (en) | 2008-05-06 |
CA2282219A1 (en) | 2000-03-18 |
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