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
• • 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
  • H05B41/14—Circuit arrangements
  • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
  • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
  • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps

Definitions

• a fluorescent lamp usually consists of a housing which is regularly attached to the ceiling and on which lamp sockets are arranged.
• a fluorescent tube can be inserted into it, which regularly has a cylindrical discharge vessel, at the ends of which end caps are arranged which carry contact pins.
• the fluorescent tube is held in the lamp holder via these contact pins and the electrical current from the holder is passed on to an incandescent filament which is arranged in the discharge vessel.
• a filament is regularly arranged on the opposite ends of the discharge vessel.
• the fluorescent tube is usually operated by means of an alternating current source.
• ballasts have long been used in conjunction with fluorescent lamps to increase efficiency.
• ballasts can be electronic ballasts (EVG) or magnetic ballasts.
• the ballast When the fluorescent tube is operated with a ballast, for example with an electronic ballast, the ballast is connected on the input side to the alternating current source in order to apply a high-frequency current to one of the two filaments on the output side.
• a circuit arrangement for energy-saving operation of a fluorescent tube is known from DE 198 53 138.
• This known circuit arrangement is intermediate business between two contact pins of the fluorescent tube arranged on one end face of the discharge body and contact elements of the lamp holder. These contact elements of the lamp holder are in turn connected in series with an AC power source, a choke and a starter.
• the known circuit arrangement has a four-pole on the input side, the input terminals of which form a series connection with the two contact elements of a lamp holder and with the inductor, which is connected in parallel with the AC power source and the output terminals of the four-pole are electrically connected to the two contact elements on the opposite side of the lamp holder ,
• the circuit arrangement known from this publication is arranged on an end face of the discharge vessel between the contact pins of the fluorescent tube and the contact elements of the socket and is used to operate a fluorescent tube provided for the corresponding socket with the interposition of the electrical ballast.
• the present invention is based on the problem of creating a device for energy-saving operation of a fluorescent lamp.
• the present invention proposes a device for operating a fluorescent tube with the features of claim 1.
• the present invention proposes a device which has a first and a second compensation adapter.
• the compensation adapters each have receptacle connections for receiving the contact pins of the fluorescent tube and connector pins for electrical and mechanical connection on the contact elements of the lamp holders located opposite one another.
• An energy-saving device is interposed between the receptacle connections and the plug pins of the first or second compensation adapter.
• the compensation adapters are designed in such a way that they can receive the contact pins of a T5 fluorescent tube in their receiving connections, whereas the connector pins in the lamp holders of a lamp holder can be received for a conventional fluorescent tube, in particular a T8 fluorescent tube.
• Conventional fluorescent tubes, such as T8 fluorescent tubes have contact pins which are spaced transversely to the longitudinal extension of the tubular discharge tube. have a larger than the corresponding distance between the contact pins of T5 fluorescent tubes.
• the compensation adapters thus create an adaptation from the conventional contact elements on the lamp holder to the contact pins of the T5 fluorescent tube.
• the receptacle connections of the compensation adapters have a different distance from one another than the connector pins of the respective compensation adapter.
• the compensation adapter of the device according to the invention effect length compensation.
• Modern T5 fluorescent tubes have a different length than conventional fluorescent tubes.
• the first and second compensation adapters together offer a corresponding adjustment in the axial direction with respect to the longitudinal axis of the fluorescent tube.
• the two compensation adapters of the device according to the invention thus bring about an adaptation of the different distances of the socket-side contact elements to the tube-side contact pins, for the electrical connection of the T5 fluorescent tube to the conventional lamp holder and an axial length compensation for mechanical mounting and connection of the T5 fluorescent tube in the lamp socket for conventional ones fluorescent tubes.
• T5 fluorescent tubes which have a better efficiency than conventional fluorescent tubes, in a conventional lamp holder.
• An energy-saving device for example a ballast, is connected to at least one of the compensation adapters. Accordingly, only the compensation adapters have to be connected at the end to the commercially available T5 fluorescent tubes and the unit produced in this way for replacing a conventional fluorescent tube, for example a T5 fluorescent tube, must be installed in the lamp holder. With such little effort, all fluorescent lamps that are in widespread use today can be converted easily and economically with T8 fluorescent tubes. It is not necessary to unscrew the housing of the old lamp holder and remove electrical parts. Nor is it necessary to unscrew the entire lamp holder from the ceiling to convert from a T8 to a T5 fluorescent tube to be replaced by a T5 fluorescent tube with a T5 lamp holder.
• the compensating adapter After retrofitting, a conventional lamp holder with a T5 fluorescent tube provides an aesthetically pleasing image if the compensating adapter according to a preferred development of the present invention is a substantially cylindrical component which extends in the axial direction of the fluorescent tube.
• the ballast can be designed, for example, as an electrical ballast and can be accommodated in the cylindrical component.
• ballast With regard to a modular expansion and adaptation to fluorescent tubes of different light output, it is preferable to arrange the ballast on the circumferential surface of the cylindrical component and to connect it to the receptacle connections and the plug pins via a plug connection.
• identical compensation adapters can be used for very different T5 fluorescent tubes, whereas only the ballast is adapted to the corresponding performance characteristics of the fluorescent tube and is connected to at least one of the compensation adapters via a plug connection.
• ballast on a compensation adapter designed in this way is particularly easy to carry out if the ballast is detachably attached to the first or the second compensation adapter.
• possibly defective ballasts can also be easily replaced without the need to remove the fluorescent tube together with the compensating adapters from the lamp holder.
• the preferred development according to claim 5 results in a device for operating a T5 fluorescent tube in a conventional lamp socket in damp rooms or rooms heavily contaminated by soiling.
• an annular seal is regularly provided on the lamp holders located opposite one another, said sealing ring being in circumferential contact with the conventional fluorescent tube. The seal thus seals the contact area between the contact elements and the contact pins.
• Such a seal can also be used in conjunction with the balance adapters if the first and the second compensation adapter of the geometric dimension of a T8 fluorescent tube are reproduced.
• the first and second compensation adapters each have a receptacle that extends around the end of the T5 fluorescent tube.
• the end region of the circumferential surface of the T5 fluorescent tube is sealed off from the compensation adapter via this receptacle.
• a seal can be provided between the inner peripheral surface of the receptacle and the peripheral surface of the fluorescent tube, which seal is preferably connected to the compensating adapter.
• the device according to the invention is preferably further developed in that one of the compensation adapters has a signal transmitter and the other compensation adapter has a signal receiver assigned to it.
• the signals required to heat the filament on the other side can be transmitted via signal transmitters and receivers, bypassing the fluorescent tube. In other words, it is possible to transmit a signal from the input side to the output side, which leads to an immediate heating of the filament on the output side without it being necessary to operate the fluorescent tube.
• the compensation adapters it is proposed to electrically connect the compensation adapters to one another.
• a connection is preferably established via a reflector arranged between the first and second compensation adapter, which aligns the light radiation emitted by the fluorescent tube in a preferred manner and through which the two compensation adapters are electrically connected to one another are connected.
• Figure 1 is a partially sectioned plan view of a fluorescent tube held in a lamp holder with the interposition of a first embodiment of a compensation adapter.
• FIG. 2 shows a partially sectioned top view of a fluorescent tube held in a lamp holder with the interposition of a second exemplary embodiment of a compensating adapter
• FIG. 3 shows a partially sectioned top view of a fluorescent tube held in a first and a second compensation adapter according to a further exemplary embodiment
• FIG. 4 shows a partially sectioned plan view of a fluorescent tube and held in a first and a second compensation adapter according to a further exemplary embodiment
• FIG. 5 shows a partially sectioned illustration of a further exemplary embodiment of a compensating adapter with sealing options for the contact areas.
• FIG. 1 shows a schematic representation of a lateral section of a modern T5 fluorescent tube 1 (page 4, last paragraph), on which two contact pins 2, 3 are arranged.
• a compensation adapter 4 and a lamp holder 5 are also shown.
• the contact pins 2, 3 are each partially inserted into receiving connections 6, 7.
• the contact pins 2, 3 are arranged in the receptacle connections 6 and 7 such that an electrical contact is created between the contact pin and the receptacle connection.
• plug pins 8, 9 are arranged, which are preferably made of a solid material.
• the plug pins 8, 9 are each arranged in a contact portion 10, 11 of the lamp holder 5 with a section protruding from the first compensation adapter 4.
• the plug pins 8, 9 are inserted into the contact elements 10, 11 in such a way that an electrical contact is formed between the respective plug pin 8 or 9 and the associated contact element 10 or 11.
• the spatially separate arrangement of the receptacle connections 6, 7 and the plug pin 8, 9 at opposite ends of the compensating adapter shown in FIG. 1 has the advantage that this configuration can be produced simply and inexpensively.
• the compensation adapter 4 can be designed in such a way that different gaps between the end of the fluorescent tube 1 and the lamp holder 5 are compensated for.
• the connector pins 8, 9 are each connected to a contact 12, 13 of an energy-saving device 14.
• the energy-saving device 14 can be any type of electrical ballast (EVG) of a known type.
• the receiving connections 6, 7 are both connected to a further contact of the energy saving device.
• the contacts 12, 13, 15 are connected to electrical / electronic components, which are shown schematically in FIG. 1 by means of the blocks 16a, 16b and 16c.
• the energy-saving device 14 is supplied with a current from an AC power source (not shown here) via the contacts 12, 13, and the receiving connections 6, 7, which in turn are connected to the contact pins 2, 3, via the further contact 15 to supply a high-frequency current.
• the energy-saving device can be individually adapted as a function of the electrical power of the fluorescent tube 1. This means that, for example, a modern T5 fluorescent tube with 54 W or 80 W can be used.
• the compensation adapter 4 in one embodiment according to FIG. hen that three plug pin receptacles 20, 21, 22 are formed on the compensation adapter 4, which are connected to the plug pins 10, 1 1 and the receptacle connections 6, 7. Three connector pins 23, 24, 25 of the energy-saving device 14 are inserted into the connector receptacles 20, 21, 22.
• the plug connection formed by means of the plug pin receptacles 20, 21, 22 and the plug pins 23, 24, 25 between the compensation adapter 4 and the energy saving device 14 is preferably designed such that the arrangement according to FIG. 2 is suitable for use in a damp room environment.
• suitable plug receptacles and necessary sealing measures must be provided.
• the components (electrical / electronic components, connecting elements, plug-in connecting elements, ...) of the energy-saving device 14 can be completely or partially cast in the sheathing material, for example in resin.
• a major advantage of the arrangement according to FIG. 2 is that different energy-saving devices can be plugged onto an installed compensation adapter depending on the electrical power of the fluorescent tube 1.
• the T5 lamps have a uniform outer shape, in particular with regard to the length and diameter of the discharge vessel, but can differ in terms of electrical power.
• the electrical power which can be, for example, 35 W, 54 W or 80 W, an energy-saving module which is matched to the electrical power is then plugged on.
• a first compensation adapter 4 is provided in accordance with the illustration in FIGS. 2 and 3.
• a second compensation adapter 30 is provided, which is designed in accordance with the first compensation adapter 4, with receiving connections 31, 32 for receiving the contact pins 33, 34 arranged on the other side of the fluorescent tube 1 and with connector pins 36, 37 for mechanical and electrical connection in contact elements 37, 38 of the second lamp holder 39 opposite the lamp holder 5 of the conventional lamp holder.
• the connector pins 2, 3 and 33, 34 are connected to a respective filament 40, 41.
• the incandescent filaments 41, 42 are used to preheat the gas / gas mixture located in the discharge space 42 of the fluorescent tube 1 before starting the fluorescent tube 1.
• a light signal is emitted by means of a light-emitting device 43 when preheating is to begin.
• the light-emitting device 43 receives a pulse that can be generated by means of the components of the energy-saving device 14.
• the emitted light signal is received by a light-sensitive device 44.
• preheating of the filament 40 is then carried out simultaneously with the filament 41.
• the transmitted light signals ensure that preheating of the gas is carried out simultaneously on both incandescent filaments 40, 41 before the fluorescent tube 1 starts.
• the light-emitting device 43 is, for example, a photodiode, in particular an infrared photodiode.
• the light-emitting device 44 should emit light whose wavelength is different from the wavelength of the light, which is emitted in the discharge space 36 after the gas has been ignited.
• the photosensitive device 39 is sensitive to the light emitted by the light-emitting device.
• a reflector 45 extends between the two compensating adapters 4, 30.
• the reflector 45 is connected at the end to the respective compensating adapter 4, 30 and, in the exemplary embodiment shown, has an electrical line 46 on its fluorescent tube 1, which is a rear side, which has a Signal transmission from the first compensation adapter 4 to the second compensation adapter 30 causes.
• An alternative embodiment to the light-emitting and light-sensitive device 33, 34 shown in FIG. 3 can be seen here.
• the embodiment shown in FIG. Example in contrast to the embodiment shown in FIG. 3, is to be preferred if the fluorescent tube is operated in an environment where particles, such as dust or moisture droplets, are contained in the ambient air, which complicate an optical transmission of signals and move optically transparent surfaces ,
• FIG. 5 shows an exemplary embodiment of a compensation adapter 30 which has suitable sealing measures in order to ensure trouble-free operation in a damp room environment.
• a sealing ring 48 is arranged on the inner circumferential surface of the receptacle 47 between the fluorescent tube 1 and a receptacle 47 that surrounds it. This prevents moist air from reaching the contact area between the contact pins 33, 34 and the receptacle connections 31, 32.
• a sealing collar 49 which interacts with the outer peripheral surface of the compensating adapter 30, seals the contact area between the contact elements 37, 38 and the plug pins 35, 36 from the ambient air.
• This sealing collar 49 is displaceable in the axial direction with respect to the longitudinal axis of the fluorescent tube 1 and can be displaced along the lamp holder 39 in a manner known per se. After inserting the fluorescent tube 1 with the two compensation adapters 4, 30 into the respective lamp holders 5, 39, the sealing sleeves 49 are pushed towards one another at the ends. Here, the front end of the respective sealing sleeves 49 comes to rest on the outer circumferential surface of the compensation adapters 4, 30. Finally, the sealing sleeve 49 is fixed relative to the lamp holder 4, 39.

Landscapes

• Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
• Vessels And Coating Films For Discharge Lamps (AREA)
• Fastening Of Light Sources Or Lamp Holders (AREA)
• Discharge Lamps And Accessories Thereof (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)

Applications Claiming Priority (5)

Publications (1)

Family

ID=26008656

Family Applications (1)

Country Status (7)

Families Citing this family (2)

Citations (1)

Family Cites Families (9)

• 2001
  • 2001-11-02 CA CA002439033A patent/CA2439033A1/en not_active Abandoned
  • 2001-11-02 RU RU2003128317/09A patent/RU2003128317A/ru not_active Application Discontinuation
  • 2001-11-02 BR BR0116905-0A patent/BR0116905A/pt not_active Application Discontinuation
  • 2001-11-02 CN CNA018230768A patent/CN1494731A/zh active Pending
  • 2001-11-02 JP JP2002566522A patent/JP2004529459A/ja not_active Withdrawn
  • 2001-11-02 EP EP01273767A patent/EP1364389A1/de not_active Withdrawn
  • 2001-11-02 WO PCT/DE2001/004139 patent/WO2002067290A1/de not_active Application Discontinuation

Patent Citations (1)

Non-Patent Citations (1)

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