EP0427042B1 - System zum Betreiben einer tragbaren Leuchte - Google Patents

System zum Betreiben einer tragbaren Leuchte Download PDF

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Publication number
EP0427042B1
EP0427042B1 EP90120310A EP90120310A EP0427042B1 EP 0427042 B1 EP0427042 B1 EP 0427042B1 EP 90120310 A EP90120310 A EP 90120310A EP 90120310 A EP90120310 A EP 90120310A EP 0427042 B1 EP0427042 B1 EP 0427042B1
Authority
EP
European Patent Office
Prior art keywords
lamp
battery
voltage
bulb
circuit
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
Application number
EP90120310A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0427042A2 (de
EP0427042A3 (en
Inventor
Siegfried Ormanns
Rainald Grevé
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.)
RAG AG
Original Assignee
Ruhrkohle AG
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 Ruhrkohle AG filed Critical Ruhrkohle AG
Publication of EP0427042A2 publication Critical patent/EP0427042A2/de
Publication of EP0427042A3 publication Critical patent/EP0427042A3/de
Application granted granted Critical
Publication of EP0427042B1 publication Critical patent/EP0427042B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps
    • H05B41/2325—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps provided with pre-heating electrodes
    • 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
    • H05B41/36—Controlling
    • 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
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/382—Controlling the intensity of light during the transitional start-up phase

Definitions

  • the invention relates to a method according to the preamble of claim 1, an arrangement according to the preamble of claim 4 or a lamp according to the preamble of claim 10.
  • Head lamps suitable for use in underground coal mining are usually operated with incandescent lamps.
  • the rechargeable battery or battery arrangement operationally supplies the lamp with a voltage which is harmless given the currents flowing in the lamp.
  • fluorescent lamps low-pressure gas discharge lamps
  • incandescent lamps have a significantly higher luminous efficacy than incandescent lamps.
  • they often have longer lifetimes than incandescent lamps.
  • a portable luminaire is known from US Pat. No. 3,953,768, in which two fluorescent lamps connected in parallel are supplied from batteries and are operated with inverters with high-frequency alternating current.
  • Portable inverters for generating the high-frequency operating current for fluorescent lamps are relatively expensive.
  • the known luminaire is neither intended nor suitable for use in potentially explosive areas.
  • the invention has for its object to make the above-mentioned advantages of a fluorescent lamp, ie high luminous efficacy and lifespan, usable in portable luminaires for potentially explosive areas.
  • the invention creates the conditions for the advantageous use of fluorescent lamps as light sources in portable lights for potentially explosive areas.
  • the high luminous efficacy with lower energy consumption enables a power supply with relatively small and correspondingly light batteries.
  • This weight and space saving is particularly advantageous for portable lights. Since the cathodes are preheated, the fluorescent lamp has a long service life and thus low operating costs.
  • the preheating and ignition are carried out outside the hazardous areas, preferably in special lamp rooms, in which a large number of connections are available for charging, preheating and igniting a corresponding number of lights.
  • the lamp operating circuit is preferably interrupted by means of a switching device which is connected to the charging circuit and can be activated by the charging voltage. This measure ensures that the lamp is only switched on during its operational use, but is switched off during the charging phase. This contributes to increasing the life of the lamp.
  • a further development of the invention provides that the interruption of the charging voltage, the application of the heating voltage and the application of the ignition voltage take place synchronously and in a phase-locked manner with the decoupling process when the lamp is removed from the discharge station.
  • the lamp from the Charger or heating or ignition current circuits of the charger are supplied with power via separate lamp connections and two switching devices.
  • the first switching device ensures the coupling of the lamp or the associated battery to the charging circuit
  • the second switching device which is preferably in a predetermined switching phase relationship to the first switching device, is used for the automatic connection of the lamp electrodes to the heating or ignition circuits in the charging station .
  • an ignition voltage transmitter is installed in the lamp, which is connected to the lamp electrodes and can be operated manually via a switch. With the help of this ignition voltage sensor, the fluorescent lamp can be switched on without preheating. The operation of this cold start system affects the life of the lamp and is therefore only useful in the event that no second light source is available in the lamp.
  • an auxiliary light source in the form of an incandescent lamp is connected to the battery circuit in parallel with the fluorescent lamp.
  • the light bulb branch can be interrupted during normal operation of the fluorescent lamp.
  • an undercurrent release is integrated into the operating circuit of the fluorescent lamp and is designed such that it switches on the incandescent lamp branch to the battery after falling below a current threshold value, possibly with a time delay.
  • the incandescent lamp is therefore switched on automatically (emergency light) when the fluorescent lamp burning path is interrupted, for example due to violent vibrations.
  • the fluorescent lamp has a relatively large luminous area and therefore works together with a flat reflector. At best, focusing is possible in the close range.
  • the incandescent lamp is a practically punctiform A separate, more curved reflector is assigned to the light source, and the incandescent lamp can also be effectively focused in the far range. The latter happens by a relative shift between the reflector and the incandescent lamp or by using a 2-filament incandescent lamp.
  • the arrangement can be such that the incandescent lamp can be operated in addition to the fluorescent lamp, specifically by a bypass that bypasses the undercurrent release. Suitable switching means ensure the operation of the incandescent lamp, including also for their shutdown despite activation of the undercurrent release.
  • the two reflectors are preferably arranged in a common tubular housing, at their opposite ends.
  • the housing is rotated as needed.
  • Fig. 1 the electrical components of a portable mine light are shown in a dash-dotted block 1 in association with the connections of a specially designed battery charger.
  • the portable head lamp 1 has an accumulator arrangement 10, hereinafter called (rechargeable) battery, which for Power supply to a light source designed as a low-pressure gas discharge lamp (fluorescent lamp) 11 is used.
  • a light source designed as a low-pressure gas discharge lamp (fluorescent lamp) 11 is used.
  • an opener 120 operated by a switching device 12 and a DC / DC converter 13 which converts the battery voltage from 2.4 or 3.6 V, for example, to the voltage of 24 to 30 V required by the fluorescent lamp 11 as the operating voltage.
  • the DC-DC converter can of course be omitted if the battery voltage corresponds to the lamp voltage.
  • an undercurrent release 14 which, when falling below a predetermined current threshold - preferably with a time delay - actuates a make contact 140, a dimmer 15, a series resistor 16 and a decoupling diode 17.
  • a predetermined current threshold - preferably with a time delay - actuates a make contact 140, a dimmer 15, a series resistor 16 and a decoupling diode 17.
  • an incandescent lamp 18 which serves as an auxiliary light source and which, after an interruption of the main branch by the lamp 11, is automatically switched on to the battery supply voltage (converter 13) and serves as an emergency light source.
  • a manually operated opener 19 enables the selective switching off of the emergency light source 18.
  • Another manually operated switch 19 ' is used to optionally operate the incandescent lamp 18 bypassing the closer 140 in addition to the fluorescent lamp 11, see Fig. 3.
  • a closed bypass can be provided, in which case the function of the switch 19 'is taken over by the opener 19.
  • the head lamp 1 is coupled to the charger by means of a rotary coupling, not shown in the drawing, via which on the one hand a mechanical mounting of the lamp 1 on the charger and on the other hand an electrical coupling of the lamp connections 20, 21; 22, 23 and 24 with associated connections 30, 31, 32 and 33 of the charger. Because of this mechanical-electrical Coupling, it is possible to bring the charging, heating and ignition circuits described in more detail below into a predetermined switching phase relationship at the start of charging and when the head lamp is removed.
  • the charging voltage U L is connected to the battery charging circuit via a preferably selectively actuable switch 34 with two switching contacts designed as make contacts via connection pairs 30, 20 and 31, 21. When U L is applied, the switching device 12 is activated and interrupts the lamp operating circuit via the break contact 120. The battery 10 is then charged with the charging voltage U L via a decoupling diode 25. The lamp 11 is extinguished.
  • the circuit of the lamp 1 is coupled via the connections 22, 23 and 24 and the counter connections 32, 33 to the heating and ignition circuits in the charger.
  • the switches or switching contacts 35, 36 and 37 designed as openers are opened, so that the connections 32 and 33 and the counter connections of the lamp 1 are de-energized.
  • the switch 34 is first opened; the switching device 12 shown as a relay is de-energized, and the switching contact 120 closes the battery circuit via the converter 13.
  • the switching contacts 35, 36 close the heating circuit, which is a series resistor from the positive terminal of the heating voltage source U H via the switching contact 35 38, the connection 32 designed as a contact bridge, the light-side connection 24, the connection point 26 to the cathode 110 to be heated, the connection 23, the device-side counter-connection 33 and the switching contact 36 to the negative pole of the heating voltage U H.
  • the switch or switching contact 37 also closes and triggers an ignition device 39.
  • the ignition device 39 applies a suitable ignition voltage to the anode 111 of the fluorescent lamp 11 via a contact bridge at the connection 32, with the result that the lamp 11 ignites.
  • the operating voltage is fed from the battery 10, between the preheated cathode 110 and the anode 111, so that the lamp remains on when, in the last phase of the mechanical decoupling of the lamp 1, there is also electrical separation from the charger.
  • the heating voltage U H can deviate from the charging voltage U L ; however, can also match this. In this case, the connection chambers of U L and U H are interconnected.
  • Any provided lighting ignition device for cold starting the lamp 11 should be integrated between the connections 22 and 23.
  • FIG. 2 shows an electronic switching device to replace the relay arrangement 12, 120 in FIG. 1.
  • This electronic switching device has two transistors T1 and T2, of which T2 performs the function of the break contact 120.
  • T1 is blocked during battery operation, the base of transistor T2 is at a relatively high potential via resistor R2 and makes the collector-emitter path of T1 conductive.
  • the decoupling diode 25 prevents current flow from the positive pole of the battery through the resistor R1 to the base of T1.
  • switch 34 is closed; the battery 10 is charged via the diode 25.
  • the potential of the base of transistor T1 is raised above R1, making T1 conductive and pulling the base of T2 down to the negative potential.
  • the consequence is a blocking of T2, i.e. the interruption of the lamp 11 supply circuit in FIG. 1
  • Fig. 3 shows a reversible lamp, which can also be designed as a head lamp or as a portable lamp.
  • the reversible lamp has a housing 40 which is mounted in a fork 41 and can be pivoted about a horizontal axis running perpendicular to the plane of the drawing.
  • the fork 41 is rotatably mounted or can be fastened in a reversible orientation on a pit helmet.
  • the housing 40 is tubular and carries on it The fluorescent lamp 11 at one end and the incandescent lamp 18 at its opposite end.
  • the fluorescent lamp 11 is assigned a relatively flat reflector 42, while the incandescent lamp 18 is located in a more curved reflector 43. The latter can be moved in the axial direction for focusing.
  • a selective actuation of the switching sequence of charging, heating and or ignition circuits can also be provided.
  • the switching phases can also be made adjustable with the aid of a suitable switching mechanism and can be operated either automatically or selectively. It is essential to integrate all the electrical components required for a so-called soft ignition of a fluorescent lamp into the charger or to assign them to the charger, so that the fluorescent lamp is reliably ignited and switched on when the lamp is removed from the removal device.
  • the undercurrent monitor 14 should preferably only be effective with a time delay so that the auxiliary circuit is prevented from being closed via the incandescent lamp 18 before the fluorescent lamp 11 is ignited.
  • the dimmer is used to adjust the luminous flux. Of course, it can be omitted.
  • a suitable series resistor can be switched into the auxiliary current branch to the incandescent lamp 18 in order to adapt the incandescent lamp operating voltage to the voltage at the output of the converter 13.
  • the configuration and timing of the switches or switching contacts 35 and 36 or 37 for actuating the heating and ignition circuits can be modified in many ways. In this respect, the circuit arrangement shown in FIG. 1 is only to be regarded as a viable alternative for carrying out the method according to the invention.
  • the housing 3 can also be designed so that the housing has a single light exit opening, the two light sources with their reflectors behind Can be pushed or swiveled in front of this opening. Accordingly, the outer shape of the housing can change.
  • the incandescent lamp 18 can be displaceable instead of or in addition to the reflector 43.
  • the use of a 2-filament light bulb is also an option.

Landscapes

  • Secondary Cells (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP90120310A 1989-11-04 1990-10-23 System zum Betreiben einer tragbaren Leuchte Expired - Lifetime EP0427042B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3936809 1989-11-04
DE3936809A DE3936809C1 (enrdf_load_stackoverflow) 1989-11-04 1989-11-04

Publications (3)

Publication Number Publication Date
EP0427042A2 EP0427042A2 (de) 1991-05-15
EP0427042A3 EP0427042A3 (en) 1992-05-27
EP0427042B1 true EP0427042B1 (de) 1994-12-21

Family

ID=6392907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120310A Expired - Lifetime EP0427042B1 (de) 1989-11-04 1990-10-23 System zum Betreiben einer tragbaren Leuchte

Country Status (6)

Country Link
US (1) US5107180A (enrdf_load_stackoverflow)
EP (1) EP0427042B1 (enrdf_load_stackoverflow)
AU (1) AU636922B2 (enrdf_load_stackoverflow)
CA (1) CA2028886A1 (enrdf_load_stackoverflow)
DE (2) DE3936809C1 (enrdf_load_stackoverflow)
ES (1) ES2067619T3 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6316911B1 (en) 1997-08-08 2001-11-13 Black & Decker Inc. Battery and flashlight recharger
US7446086B2 (en) 2003-08-19 2008-11-04 Henkel Kommanditgesellschaft Auf Aktien Agents that are absorbed on the surfaces of substrates

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214353A (en) * 1989-09-22 1993-05-25 Nilssen Ole K Flashlight with boost feature
USD448099S1 (en) 2000-06-21 2001-09-18 Henry J. Mariani Rechargeable hand lantern
CN100381748C (zh) * 2004-02-09 2008-04-16 山西光宇电源有限公司 自带充放电控制与保护系统的半导体照明矿用帽灯
US7400095B2 (en) * 2005-11-16 2008-07-15 Ellenberger & Poensgen Gmbh Portable electric lighting fixture
FR2991027A1 (fr) * 2012-05-25 2013-11-29 Zedel Lampe electrique portative a dispositif de limitation en courant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE633793C (de) * 1936-08-06 Dominitwerke Akt Ges Grubenlam Elektrische Handlampe, insbesondere Grubensicherheitslampe mit einer als Lichtquelledienenden Gasentladungsroehre
US3953768A (en) * 1970-12-23 1976-04-27 Meredith Ronald D Portable fluorescent lamp and inverter therefor
US3869640A (en) * 1973-07-09 1975-03-04 Taras Avenir Kolomyjec Power supply arrangement for fluorescent tubes, thermionic devices and the like
US4225906A (en) * 1978-03-16 1980-09-30 Koehler Manufacturing Company Luminaire apparatus with multiple light sources and methods of operating same
US4399492A (en) * 1980-12-08 1983-08-16 Ocenco Incorporated Incandescent and fluorescent caplight device
DE3100177A1 (de) * 1981-01-07 1982-08-05 Philips Patentverwaltung Gmbh, 2000 Hamburg Schaltungsanordnung zum zuenden und betrieb einer niederdruckentladungslampe aus einer gleichstromquelle
DE3736618A1 (de) * 1987-10-29 1989-05-11 Ceag Licht & Strom Leuchte mit einer transparenten abdeckwanne und einem damit verbundenen leuchtengrundkoerper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6316911B1 (en) 1997-08-08 2001-11-13 Black & Decker Inc. Battery and flashlight recharger
US7446086B2 (en) 2003-08-19 2008-11-04 Henkel Kommanditgesellschaft Auf Aktien Agents that are absorbed on the surfaces of substrates

Also Published As

Publication number Publication date
ES2067619T3 (es) 1995-04-01
AU636922B2 (en) 1993-05-13
US5107180A (en) 1992-04-21
CA2028886A1 (en) 1991-05-05
EP0427042A2 (de) 1991-05-15
DE59008078D1 (de) 1995-02-02
AU6567690A (en) 1991-05-09
DE3936809C1 (enrdf_load_stackoverflow) 1991-02-21
EP0427042A3 (en) 1992-05-27

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