EP0922297B1 - Leuchtstofflampe - Google Patents
Leuchtstofflampe Download PDFInfo
- Publication number
- EP0922297B1 EP0922297B1 EP98931925A EP98931925A EP0922297B1 EP 0922297 B1 EP0922297 B1 EP 0922297B1 EP 98931925 A EP98931925 A EP 98931925A EP 98931925 A EP98931925 A EP 98931925A EP 0922297 B1 EP0922297 B1 EP 0922297B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- discharge vessel
- electrode
- electrodes
- fluorescent 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
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- 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
- H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only
- H01J61/78—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only with cold cathode; with cathode heated only by discharge, e.g. high-tension lamp for advertising
-
- 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
- H01J61/80—Lamps suitable only for intermittent operation, e.g. flash lamp
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S315/00—Electric lamp and discharge devices: systems
- Y10S315/01—Fluorescent lamp circuits with more than two principle electrodes
Definitions
- the invention is based on a fluorescent lamp according to the preamble of claim 1.
- the invention also relates to a method for its Operation according to the preamble of claim 11.
- dielectric electrodes are hereinafter also abbreviated as "dielectric electrodes”.
- the dielectric layer can through the wall of the discharge vessel itself be formed by the electrodes outside the discharge vessel, are arranged on the outer wall.
- An advantage of this version with external electrodes is that there are no gas-tight feedthroughs must be passed through the wall of the discharge vessel.
- the thickness of the dielectric layer - an important parameter, which among other things the ignition voltage and the burning voltage of the discharge influenced - essentially by the requirements for the discharge vessel, especially its mechanical strength. Since the Height of the required supply voltage with the thickness of the dielectric Layer increases, there are the following disadvantages. In First of all, the power supply provided for the operation of the flat radiator must be used can be designed for the higher voltage requirements. This is usually associated with additional costs and larger external dimensions. There are also higher safety precautions to protect against contact required. Finally, undesirably high electromagnetic Radiations become problematic.
- the dielectric layer can also be at least in the form of a partial cladding or layer of at least one within the discharge vessel arranged electrode can be realized. That has the advantage, that the thickness of the dielectric layer depends on the discharge properties can be optimized.
- inner electrodes require gas-tight Current feedthroughs. As a result, additional manufacturing steps are required which usually makes the production more expensive.
- fluorescent lamps with a tubular, Discharge vessel closed on both sides, its inner wall is at least partially coated with a phosphor.
- OA O ffice A utomation
- the signal light for example as brake and turn signal light in automobiles
- auxiliary such as the interior lighting of motor vehicles
- backlighting of displays for example liquid crystal displays
- both a high luminance and uniform luminance over the length of the lamp is also necessary.
- the lamps are used for OA usually provided with an aperture along the longitudinal axis.
- coupled power increase because the load of a lamp for one permanent and reliable operation cannot be increased arbitrarily can.
- the previously in the copiers and Systems used by scanners increase the efficiency of the discharge Power coupling decreases.
- a noble gas discharge lamp for is already known from the document US Pat. No. 5,117,160 OA devices known.
- On the outer surface of the wall of a tubular Discharge vessel are two strip-shaped electrodes along the longitudinal axis of the lamp arranged.
- the lamp comes with an AC voltage preferred frequency operated between 20 kHz and 100 kHz. Operational the 147 nm xenon line is excited.
- One disadvantage is one not completely transparent due to protection against accidental contact
- the protective layer also has that Function to prevent parasitic surface discharge.
- a tubular discharge lamp is included in US Pat. No. 5,604,410 circular cross-section, with a strip-shaped outer electrode and a rod-shaped inner electrode is disclosed.
- the rod-shaped inner electrode is eccentric in the with the help of two bow-shaped power supplies Close to the inner wall and parallel to the longitudinal axis of the discharge vessel arranged.
- the two power supplies are each one Crushing by means of melting the plate with the discharge vessel is connected gastight, led to the outside.
- the outer electrode is diametrical fixed opposite on the outer wall. They are disadvantageous relatively complex and consequently expensive construction for the attachment of the metallic electrode rod inside the lamp as well as the two bruises.
- the metallic inner electrode rod must be relatively thick be carried out to ensure the necessary rigidity.
- the basic idea of the invention is based on the knowledge that on the one hand the Impact range of the pulsed, dielectric barrier discharge for a high electrical power input should be as large as possible. On the other hand, should the arrangement of all electrodes on the outer wall of the discharge vessel and the associated disadvantages are avoided.
- the pulsed, dielectric barrier discharge To strive for a constant stroke length along the discharge tube. This is therefore important to ensure the same ignition conditions for all individual discharges during operation (see US Pat. No. 5,604,410) along the electrodes. This ensures that the individual discharges Form lined up along the entire length of the electrode (assuming sufficient electrical input power) and consequently one Basic requirement for achieving a high and homogeneous luminance the lamp is satisfied.
- a first way according to the invention to solve this problem suggests before, at least one or all of the electrodes on the inner wall of the Arrange discharge vessel.
- the following is such an electrode abbreviated as "inner wall electrode”.
- the concept can up to a maximum of the entire inner diameter can be used as a striking distance.
- One advantage is the good thermal coupling of the Electrodes over the vascular material to the outside. This ensures that the inner wall electrodes do not move from the inner wall even in continuous operation peel off. As a result, the stroke length remains constant.
- the inner wall electrode is considered to be electrically conductive, if necessary "Line-like" strips - similar to an electrical conductor track - formed and oriented parallel to the longitudinal axis of the tubular discharge vessel.
- the strip can e.g. in the form of liquid conductive silver or similar on the inner wall be applied.
- the strip is then solidified, e.g. by baking.
- the inner wall electrode is also as Implementation further trained including external power supply. Is to the tubular discharge vessel at least at one of its two ends sealed with a stopper which is soldered, e.g. Glass solder, gas-tight with the inner wall of the vessel end is connected.
- the inner wall electrode is guided gas-tight to the outside through the solder, i.e.
- the inner wall electrode goes into an implementation in the range of the solder and finally into an external power supply outside the vessel.
- inner wall electrode, their associated implementation and associated external power supply as functionally different Sub-areas of a single common, track-like structure educated. This structure is a key to realizing the inner wall electrode This concept can be simply put Realize wisely and with relatively few components and is about it easy to automate.
- At least one inner wall electrode uses a relatively thick conductor track. Too small a conductor path carries the risk of cracking due to local overheating of the conductor track. The warming of the Conductor path through the ohmic part of the conductor path current is the higher, the smaller the cross section of the conductor track.
- Typical thicknesses for conductive silver strips are in the Range from approx. 5 ⁇ m to approx. 50 ⁇ m, preferably in the range from approx. 5.5 ⁇ m to approx. 30 ⁇ m, particularly preferably in the range from approx. 6 ⁇ m to approx. 15 ⁇ m.
- one or more further electrodes are arranged on the outer wall or also on the inner wall.
- at least part of the inner wall has a phosphor layer.
- one or more reflection layers for visible light for example made of Al 2 O 3 and / or TiO 2 , can be applied below the phosphor layer. This may prevent some of the light emitted by the phosphor layer from being transmitted through the vessel wall. Rather, the light is essentially directed onto the aperture by reflection or multiple reflection, and consequently the luminance is increased there.
- the phosphor layer itself can also additionally be used as a reflection layer, in that the phosphor layer is applied sufficiently thick.
- the fluorescent lamp has two electrodes on, each with a strip-shaped electrode on the outer and inner wall is arranged. If the lamp is for use with bipolar Voltage pulses is provided, the inner wall electrode is additional completely covered with a dielectric layer. For use with This double-sided dielectric impedance is unipolar voltage pulses not absolutely necessary (see US Pat. No. 5,604,410). Security of touch To ensure the inner wall electrode in the latter case associated with high voltage potential.
- both electrodes are on the inner wall of the discharge vessel arranged, at least one of the two electrodes is completely covered with a dielectric layer. Should the lamp go with bipolar voltage pulses are operated, both electrodes are corresponding dielectric coated.
- both variants arise during operation a discharge level, which is located within the discharge vessel between extends both electrodes. There are a large number of individual discharges at this level lined up side by side along the electrodes that are in the Borderline transition into a kind of curtain-like discharge form. To the To increase the luminance of the lamp, more levels of discharge within of the discharge vessel are generated.
- the lamp has three or more electrodes. With three electrodes, two discharge levels can already be created generate that have a common electrode. Preferably this is the (temporary) cathode and unipolar voltage pulses the other two electrodes are connected as anodes.
- four electrodes can be either two independent discharge levels or realize three discharge levels with a common electrode, depending on whether the four electrodes as two cathodes and two anodes or are connected as a cathode and three anodes. In principle, you can in this way also generate more than three discharge levels. However the number of electrode strips required for this in practice Due to space constraints.
- the electrodes are advantageously oriented so that in Cross section looks at the perpendicular bisectors of the respective discharge planes cut the phosphor layer. This ensures that UV (ultraviolet) radiation maximum of the discharge level on the phosphor layer falls.
- a second way according to the invention to solve the above-mentioned problem suggests at least one electrode inside the wall of the Arrange discharge vessel.
- the following is such an electrode shortened also referred to as "vessel wall electrode”.
- the associated counter electrode up to a maximum of the entire inside diameter can be used as the stroke distance.
- the advantage of this The solution is that even when operating with bipolar voltage pulses additional dielectric is required.
- the effective one for unloading the dielectric layer is namely through a part of the vessel wall itself formed by the part of the wall that the electrode in Covered towards the inside of the discharge vessel.
- the thickness of the effective dielectric layer is determined here by the depth at which the electrode is embedded in the vessel wall. That's why it is also required the electrode, e.g.
- the fluorescent lamp according to the second solution in principle the same features as the fluorescent lamp according to the first solution.
- the inner wall electrode is replaced by the vessel wall electrode.
- both solutions can also be combined, i.e. at least one electrode each is both on the inner wall and inside arranged the vessel wall. Furthermore, one or more can also in this case Electrodes arranged on the outer wall of the discharge vessel his.
- tubular discharge vessel can also be curved.
- discharge direction is substantially perpendicular to the lamp longitudinal axis runs, almost any shape can be realized, in particular also circular, without affecting the discharge.
- an inert gas in particular xenon, or an inert gas mixture.
- FIGs 1a and 1b show the longitudinal or cross section of an aperture fluorescent lamp 1 for OA applications in a schematic representation.
- the Lamp 1 consists essentially of a tubular discharge vessel 2 with a circular cross section and a first and a second strip-shaped electrode 3,4.
- the inner wall of the discharge vessel 2 has a phosphor layer 6 with the exception of a rectangular aperture 5 on.
- the discharge vessel 2 is at its first end with one from the vessel shaped dome 7 and gas-tight at its second end by means of plugs 8 locked.
- the plug 8 is gas-tight with the inner wall by means of glass solder 9 connected to the end of the vessel.
- Inside the discharge vessel 2 is xenon with a filling pressure of 21.3 kPa (160 torr).
- the first electrode 3 provided as an anode is designed as a metal foil strip, on the outer wall of the discharge vessel 2 parallel to Pipe longitudinal axis is arranged.
- the other electrode intended as a cathode 4 consists of a conductive silver strip arranged diametrically to the anode, the liquid state with the help of a cannula on the inner wall of the discharge vessel 2 was applied and then baked (Inner wall electrode).
- the layer thickness is approx. 10 ⁇ m.
- the cathode 4 is in a bushing area 10 between the plug 8 and the Inner wall of the second end of the discharge vessel 2 gas-tight led to the outside and there goes into an external power supply 11 about. In this way, the cathode 4, its associated implementation 10 and associated external power supply 11 as functional different sub-areas of a single common, track-like Structure trained.
- the glass solder 9 enables in this area 10 the gas-tight passage of the cathode 4.
- the respective width of the anode and cathode strips is 0.9 mm and 0.8 mm, respectively.
- the outer diameter of the tubular discharge vessel 2 made of glass is approximately 9 mm with a wall thickness of approximately 0.5 mm.
- the width and the length of the aperture 5 are approximately 6.5 mm and 255 mm, respectively.
- the phosphor layer 6 is a three-band phosphor. It consists of a mixture of the blue component BaMgAl 10 O 17 : Eu, the green component LaPO 4 : Ce, Tb and the red component (Y, Gd) BO 3 : Eu.
- FIGs 2 to 5 are further cross sections of an inventive Fluorescent lamp, similar to the lamp shown in Figure 1a, with and without Aperture is shown schematically. They differ from one another in essentially through the electrode configuration. The same characteristics designated with the same reference numerals.
- the lamp in FIG. 2 has a first and a second inner wall electrode 12.4 on. Since both electrodes are located inside the discharge vessel 2 are located, the first electrode 12 is covered with a dielectric layer 13 (unilaterally dielectric discharge). This is in the unipolar pulsed operation according to US-PS 5,604,410 provided as an anode.
- the lamp in FIG. 3 has two outer wall electrodes 3a, 3b and one Inner wall electrode 4.
- the outer wall electrodes 3a, 3b are as the anode and the inner wall electrode 4 is provided as the cathode. Consequently, two are formed in the pulsed operation according to US Pat. No. 5,604,410 Layers with single discharges that are dielectrically impeded from one side (not ) Shown.
- a first level of discharge extends between the cathode strips 4 and the first anode strip 3a.
- the other level of discharge extends between the cathode strip 4 and the second Anode strips 3b.
- the electrodes 3a, 3b, 4 are viewed in cross section arranged at the corner points of an imaginary isosceles triangle.
- the lamp in FIG. 4 has four inner wall electrodes 14a-14d. Each of the inner wall electrodes 14a-14d is covered with a dielectric layer 15a-15d. A first 14a of the four electrodes 14a-14d is provided for a first polarity of a supply voltage, while the three other electrodes 14b-14d are provided for the second polarity. In pulsed operation, a total of three discharge levels are formed, namely between the first electrode 14a and one of the three remaining electrodes 14b-14d. Since the discharge is dielectrically impeded on both sides, operation is not only possible with unipolar voltage pulses but also with bipolar voltage pulses.
- the inner wall of the discharge vessel 2 is provided with a reflection double layer 16 made of Al 2 O 3 and TiO 2 .
- a phosphor layer 6 is applied to the reflection double layer 16.
- the reflection double layer 16 reflects the light generated by the phosphor layer 6. In this way, the luminance of the aperture 5 is increased.
- the lamp in FIG. 5 has two outer wall electrodes 3a, 3b and one Vessel wall electrode 4.
- the vessel wall electrode 4 consists of a Wire made of Vacovit® (from Vacuumschmelze GmbH) with a diameter of approx. 100 ⁇ m, which is melted into the vessel wall. Since here as well as in Figure 4 all electrodes are dielectrically impeded, is next unipolar and bipolar pulse operation possible.
- the inner wall of the discharge vessel 2 is with a Phosphor layer 17, i.e. she knows unlike the previous ones Do not illuminate an aperture.
- the lamp of Figure 5 is for automotive lighting provided, for example, depending on the phosphor as brake light or flashing light.
- FIG. 6 shows a lighting system for OA devices.
- the aperture fluorescent lamp 1 from FIG. 1 additionally points at its second end a base 18.
- the base 18 consists essentially of a Socket pot 19 and two connecting pins 20a, 20b.
- the base pot 19 is primarily used to hold the lamp 1.
- the outer wall electrode 3 and the inner wall electrode 4 or the outer power supply section 11 with connected to the two pins 20a, 20b (not shown).
- the connector pins 20a, 20b are in turn connected via electrical lines 21a, 21b the two poles 22a and 22b of a pulse voltage source 23 connected.
- the pulse voltage source 23 supplies a series of unipolar voltage pulses with a repetition frequency of 66 kHz.
- the pulse duration is approx. 1.1 ⁇ s each.
- FIG. 7 shows the luminance L in cd / m 2 measured by the aperture as a function of the time-averaged electrical power P in W.
- the measurement curve 24 relates to an illumination system according to FIG. 6 with the operating parameters specified there. As can be seen, approximately 40,000 cd / m 2 are achieved with a power of almost 20 W.
- a comparable conventional lamp according to the teaching of US Pat. No. 5,117,160 delivers only 20,000 cd / m 2 with the same electrical power. The lamp according to the invention consequently produces twice the luminance with the same electrical power; this corresponds to a 100% increase over the prior art.
- the measurement curve 25 is obtained by replacing the lamp according to FIG. 1 with the lamp according to FIG. 3, ie a lamp with two instead of only one anode strips. Two discharge levels thus arise during operation (see also description of FIG. 3). As can be seen, from an electrical power of approx. 10 W, even higher luminance levels are achieved than with the measurement curve 24. With a power of 20 W, just under 50,000 cd / m 2 can be achieved. This corresponds to 2.5 times the luminance compared to the state of the art or an increase of 150%.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
- Fig. 1a
- einen Längsschnitt durch eine erfindungsgemäße Leuchtstofflampe mit Apertur und mit einer Außen- und einer Innenwandungselektrode,
- Fig. 1b
- einen Querschnitt durch die Leuchtstofflampe aus Figur 1a,
- Fig. 2
- einen Querschnitt durch eine Leuchtstofflampe mit zwei Innenwandungselektroden,
- Fig. 3
- einen Querschnitt durch eine Leuchtstofflampe mit einer Innenwandungs- und zwei Außenwandungselektroden,
- Fig. 4
- einen Querschnitt durch eine Leuchtstofflampe mit vier Innenwandungselektroden,
- Fig. 5
- einen Querschnitt durch eine Leuchtstofflampe mit einer Gefäßwand- und zwei Außenwandungselektroden,
- Fig. 6
- ein Beleuchtungssystem mit Apertur-Leuchtstofflampe und Impulsspannungs quelle,
- Fig. 7
- Meßkurven der Lampe aus Figur 1 bzw. Figur 3.
Claims (12)
- Leuchtstofflampe (1) mit einem zumindest teilweise transparenten und mit einer Gasfüllung gefüllten geschlossenen, rohrförmigen, einen Rundquerschnitt aufweisenden Entladungsgefäß (2) aus elektrisch nichtleitendem Material, welches Entladungsgefäß (2) auf seiner Innenwandung zumindest teilweise eine Schicht eines Leuchtstoffes oder Leuchtstoffgemisches (6) aufweist, und mit länglichen, parallel zur Längsachse des rohrförmigen Entladungsgefäßes (2) angeordneten Elektroden (3; 4; 12; 14a-14d), wobei zumindest die Elektroden, die zur selben Betriebspolarität zweckbestimmt sind, durch ein Dielektrikum (2; 13; 15a-15d) vom Innern des Entladungsgefäßes getrennt sind dadurch gekennzeichnet, daßmindestens eine Elektrode (4; 12; 14a-14d) auf der Innenwandung des Entladungsgefäßes (2) angeordnet ist,die mindestens eine Innenwandungselektrode (4; 12; 14a-14d) zusätzlich als Durchführung (10) und diese wiederum als äußere Stromzuführung (11) weitergebildet ist, d.h. daß jede Innenwandungselektrode (4), deren zugehörige Durchführung (10) und zugehörige äußere Stromzuführung (11) als jeweils funktionell unterschiedliche Teilbereiche einer einzigen gemeinsamen leiterbahnähnlichen Struktur (4, 10, 11) ausgebildet sind.
- Leuchtstofflampe nach Anspruch 1, dadurch gekennzeichnet, daß das rohrförmige Entladungsgefäß (2) an einem oder an beiden Enden mit einem Stopfen (8) und mittels Lot (9) gasdicht verschlossen ist, wobei die mindestens eine Innenwandungselektrode (4) durch das Lot (9) hindurch gasdicht nach außen geführt ist, d.h., daß die Innenwandungselektrode (4) im Bereich des Lotes (9) in eine Durchführung (10) und außerhalb des Gefäßes (2) schließlich in eine äußere Stromzuführung (11) übergeht.
- Leuchtstofflampe nach Anspruch 1, dadurch gekennzeichnet, daß die Innenwandungselektrode(n) (12; 14a-14d) zusätzlich (jeweils) mit einer dielektrischen Schicht (13; 15a-15d) bedeckt ist (sind).
- Leuchtstofflampe (1) mit einem zumindest teilweise transparenten und mit einer Gasfüllung gefüllten geschlossenen, rohrförmigen die Elektroden, die zur selben Betriebspolarität zweckbestimmt sind, Entladungsgefäß (2) aus elektrisch nichtleitendem Material, welches Entladungsgefäß (2) auf seiner Innenwandung zumindest teilweise eine Schicht eines Leuchtstoffes oder Leuchtstoff gemisches (17) aufweist, und mit länglichen, parallel zur Längsachse des rohrförmigen Entladungsgefäßes (2) angeordneten Elektroden (3a; 3b; 16), wobei zumindest, Rundquerschnitt aufweisenden durch ein Dielektrikum (2) vom Innern des Entladungsgefäßes getrennt sind, dadurch gekennzeichnet, daß mindestens eine Elektrode (16) innerhalb der Wand des Entladungsgefäßes (2) angeordnet ist.
- Leuchtstofflampe mit den Merkmalen der Ansprüche 1 und 4.
- Leuchtstofflampe nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Anzahl der Elektroden der einen Polarität (4; 14a; 16) verschieden von der Anzahl der Elektroden der anderen Polarität (3a,3b; 14b-14d) ist.
- Leuchtstofflampe nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Innenwandung des Entladungsgefäßes (2) eine Apertur (5) aufweist, die von der Leuchtstoffschicht (6) und gegebenenfalls einer Reflexionsschicht (16) ausgenommen ist.
- Leuchtstofflampe nach Anspruch 7, dadurch gekennzeichnet, daß die Elektroden asymmetrisch bezüglich der Apertur (5) angeordnet sind.
- Leuchtstofflampe nach Anspruch 8, dadurch gekennzeichnet, daß mindestens ein Elektrodenpaar unterschiedlicher Polarität (3,5; 4,12; 3a,4; 14a,14d) derart angeordnet ist, daß im Querschnitt betrachtet die Mittelsenkrechte auf der Verbindungslinie eines Elektrodenpaares (3,5; 4,12; 3a,4; 14a,14d) die Leuchtstoffschicht (6) schneidet, d.h. die Innenwandung außerhalb der Apertur (5) trifft.
- Leuchtstofflampe nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Breite der Elektroden weniger als 2 mm, insbesondere weniger als 1 mm beträgt.
- Verfahren zum Betrieb einer Leuchtstofflampe nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Leuchtstofflampe (1) mit einer elektrischen Impulsspannungsquelle (23) verbunden wird, die durch Pausen voneinander getrennte Spannungspulse liefert.
- Verfahren nach Anspruch 11, gekennzeichnet durch folgende Betriebsparameter:Wiederholfrequenz der Spannungspulse größer 60 kHzPulsdauer der Spannungspulse kleiner 2 µs.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19718395 | 1997-04-30 | ||
DE19718395A DE19718395C1 (de) | 1997-04-30 | 1997-04-30 | Leuchtstofflampe und Verfahren zu ihrem Betrieb |
PCT/DE1998/001061 WO1998049712A1 (de) | 1997-04-30 | 1998-04-16 | Leuchtstofflampe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0922297A1 EP0922297A1 (de) | 1999-06-16 |
EP0922297B1 true EP0922297B1 (de) | 2002-03-06 |
Family
ID=7828304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98931925A Expired - Lifetime EP0922297B1 (de) | 1997-04-30 | 1998-04-16 | Leuchtstofflampe |
Country Status (12)
Country | Link |
---|---|
US (1) | US6097155A (de) |
EP (1) | EP0922297B1 (de) |
JP (1) | JP2000513872A (de) |
KR (1) | KR100375616B1 (de) |
CN (1) | CN1165959C (de) |
AT (1) | ATE214201T1 (de) |
CA (1) | CA2259365C (de) |
DE (2) | DE19718395C1 (de) |
ES (1) | ES2174454T3 (de) |
HU (1) | HUP0100194A3 (de) |
TW (1) | TW419704B (de) |
WO (1) | WO1998049712A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1519407A3 (de) * | 2003-08-06 | 2007-08-15 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | UV-Strahler mit rohrförmigem Entladungsgefäss |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19905219A1 (de) | 1998-09-30 | 2000-08-31 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Flache Beleuchtungsvorrichtung |
US6614185B1 (en) * | 1999-06-07 | 2003-09-02 | Toshiba Lighting & Technology Corporation | Discharge tube with interior and exterior electrodes |
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1997
- 1997-04-30 DE DE19718395A patent/DE19718395C1/de not_active Expired - Fee Related
-
1998
- 1998-04-14 TW TW087105618A patent/TW419704B/zh not_active IP Right Cessation
- 1998-04-16 CN CNB988005638A patent/CN1165959C/zh not_active Expired - Fee Related
- 1998-04-16 JP JP10546478A patent/JP2000513872A/ja active Pending
- 1998-04-16 HU HU0100194A patent/HUP0100194A3/hu unknown
- 1998-04-16 DE DE59803262T patent/DE59803262D1/de not_active Expired - Lifetime
- 1998-04-16 KR KR10-1998-0710844A patent/KR100375616B1/ko not_active IP Right Cessation
- 1998-04-16 EP EP98931925A patent/EP0922297B1/de not_active Expired - Lifetime
- 1998-04-16 ES ES98931925T patent/ES2174454T3/es not_active Expired - Lifetime
- 1998-04-16 US US09/202,616 patent/US6097155A/en not_active Expired - Lifetime
- 1998-04-16 WO PCT/DE1998/001061 patent/WO1998049712A1/de active IP Right Grant
- 1998-04-16 AT AT98931925T patent/ATE214201T1/de not_active IP Right Cessation
- 1998-04-16 CA CA002259365A patent/CA2259365C/en not_active Expired - Fee Related
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EP1519407A3 (de) * | 2003-08-06 | 2007-08-15 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | UV-Strahler mit rohrförmigem Entladungsgefäss |
Also Published As
Publication number | Publication date |
---|---|
DE59803262D1 (de) | 2002-04-11 |
CA2259365C (en) | 2007-01-09 |
CN1225748A (zh) | 1999-08-11 |
DE19718395C1 (de) | 1998-10-29 |
TW419704B (en) | 2001-01-21 |
CA2259365A1 (en) | 1998-11-05 |
HUP0100194A3 (en) | 2001-06-28 |
KR100375616B1 (ko) | 2003-04-18 |
ATE214201T1 (de) | 2002-03-15 |
KR20000022412A (ko) | 2000-04-25 |
HUP0100194A2 (hu) | 2001-05-28 |
US6097155A (en) | 2000-08-01 |
JP2000513872A (ja) | 2000-10-17 |
ES2174454T3 (es) | 2002-11-01 |
EP0922297A1 (de) | 1999-06-16 |
WO1998049712A1 (de) | 1998-11-05 |
CN1165959C (zh) | 2004-09-08 |
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