DE2360999A1 - Electrically ignitable gas lighter - uses small high-power battery and thyristor control - Google Patents

Abstract

Electrically ignitable lighter, particularly gas lighter, incorporates a fuel feed device provided with a burner valve which is actuated when triggering the ignition. Between a power supply, pref. a battery, and the ignition device which is a semiconductor element, pref. a thyristor. The main switch activating current is switched via an auxiliary or control circuit. Pref. the power supply to the base of the control transistor is via a time delay comprising resistor and capacitor. The lighter makes use of small, high-power batteries.

Description

2360993

PATENT AW AL TE Q COLOGNE 51

MAXTON sr, MAXTON jr. pferdmengesstr. βο

DIPLOMA IN ENGINEERING

. ■, DEC 5. 1973 '

Applicant: Wieden & Co. GmbH, 5650 Solingen 11 Designation: Electrically ignitable lighter Our reference: 25 pg 732.

The invention relates to an electrically ignitable lighter, in particular Gas lighter, with a fuel supply device, which with one when in use, in particular when triggered the ignition process actuatable burner valve is provided, with a preferably mains-independent power source and one Ignition device. ;

DT-OS 2 303 268 describes an electrically ignitable lighter known, in which the power supply to the ignition device via a battery takes place. However, in order to generate the high voltages, which are required for the conventional ignition device working with a spark gap, is in the case of the known one Lighter between the battery and the ignition device as a voltage amplifier, a transformer is provided. This arrangement Although it allows small batteries with low power to be used for the power supply, but has the disadvantage that a relative large and correspondingly heavy transformer must be installed in the lighter.

BO9824 / 0485

The invention is based on the object of creating an electrically ignitable \ bares lighter that in its structure and also in _; its usability is significantly improved since meanwhile
Relatively small batteries with a large capacity are available, which allow the ignition device to be fed directly: by the battery. As with lighters, even with
Table lighters, the permissible size is limited for reasons of simple and easy * handling, the actuation switches represent a major problem, since at least currents
must be switched by over one ampere.

The object is achieved according to the invention in that between the power source and the preferably with electrical
Control elements provided ignition device a semiconductor component ι element is arranged as a main switch, the activation;

ν:

current switched via an auxiliary or control switchgear

will. Such a configuration has the advantage that the ^! strong current for the ignition device switched electronically
being, being semiconductor components, in particular with regard to
the short-term current flow when the lighter is operated ^; still have small sizes even with high outputs. i The actuation then takes place via a help or control switch j

device that can be operated with low currents i. In an advantageous embodiment of the invention is; therefore provided that the control switching device for actuation
the ignition device, especially to operate the main switch . ters from a known mechanical switch for

509824/0485

¹ ■ ■ ■ - ■ 3 - 2360399

Currents below / V amps. Sufficiently small switches can be built for such low currents «the dem Installation in a. Lighter are accessible.

In an embodiment of the invention it is also provided that the Main switch is designed as a thyristor. By using a thyristor, a contactless switch is available Available, which consumes practically no electricity for the switching process itself, while a comparable mechanical j

Switch once as a result of the high currents to be switched ι

■ - ■ ^:. --'-'-..''- "- - ■■" - ". J would wear out very quickly and on the other hand, if one were to use

a relay switch will work, a high power consumption Only for the operation of the switch occurs, which quickly leads to premature consumption in the case of a network-independent power source would lead.

In a further embodiment of the invention, for a gas j lighter, in which the preferably directly τοη the electricity

source-fed electric ignition device as control elements; a. Having an ignition capacitor and an ignition thyristor which is switched by a control transistor, provided that a time delay element consisting of at least one resistor and at least one capacitor is arranged in the power supply to the base of the control transistor, the capacitor being connected in parallel to the applied base voltage of the transistor. This arrangement has the advantage that with a suitable design of the capacitor of the time delay element, a high ^K

B0 98 2A / 048 5

Charging of the ignition capacitor is possible because only after charging of the capacitor is switched on via the control transistor of the ignition thyristor and the discharge of the ignition capacitor can be done.

In a "particularly advantageous embodiment of the invention also provided that in the supply circuit before the ignition device and behind the main switch, a resistor for limiting of the charging current for the ignition capacitor is arranged. This * especially in connection with the arrangement of a Time delay element, the charging current required for charging the ignition capacitor is limited, so that a considerable Protection of the power supply source, be it a dry battery or a rechargeable battery, is effected.

According to the invention, a spark gap is provided as the ignition device, which preferably - as known per se - via a voltage amplifier, in particular a transformer, with the Supply circuit is connected. The operation of the lighter consumes because of the arrangement according to the invention a semiconductor element as a main switch practically no current and it can be especially with the arrangement of a time delay element and a limiting resistor for the charging current a relatively large ignition capacitor can be used.

509824/0485

In another embodiment it is provided that the ignition unit j

direction a known filament, preferably a j

Has filament with a relatively large cross-section. Also for j

this per se "known type of ignition device come the Advantages of the invention to their full advantage, since the limitation j

»" - "-. - ■ -! the charging current for the ignition device on the one hand and the relatively large ignition capacitor on the other hand, operation with a glow wire is possible, since the i Power source the required currents are provided j the can. A major advantage here is that in contrast to the previously known glow wire ignition devices that were fed directly from the power source and with consideration on the power consumption had to be made very thin, filaments with a relatively large cross-section can be used. These have the advantage over the previously customary thin filaments that they are mechanically more durable and with regard to scaling, significantly longer service lives exhibit.

In a further advantageous embodiment of the invention it is provided that the control switching device for actuation the ignition device, in particular for operating the main switch, two mutually insulated electrodes with different Has potential that must be touched to operate the lighter at the same time, as well as one with the electrodes connected amplifier circuit, through which when the electrodes are connected by touch © in the switching element for actuation

509824 / 048S

At least the ignition device is actuated. This configuration has the advantage that the operation of the lighter is practical
takes place electronically without moving parts. In ; A particularly advantageous embodiment provides that the
Amplifier circuit made up of two parallel in the circuit
! Transistors, the base of the first transistor with; one of the touch electrodes is connected while the base; of the second transistor to the emitter or collector of the
is connected first to the transistor and that the emitter resp.
Collector of the second transistor is connected to the switching element in conjunction \ bond and developing the activation voltage or
Activation current supplies. ;

In a further advantageous embodiment of the invention is
provided that the burner valve, as known per se, is designed as a solenoid valve, and that in the supply circuit of the solenoid valve at least one resistor for limiting the holding: current and parallel to this resistor a capacitor yorge- is seen. This arrangement results in significant structural advantages, since one relies on mechanical transmission elements
can dispense with actuating the burner valve and through the j

Arrangement of the limiting resistor and the parallel to it; Capacitor in the supply circuit when actuating I initially

a high current can flow which is fast and powerful The magnet's anchor plate is attracted and then the i Current flow limited to the extent that only the one to hold the armature-i plate necessary current through the coil of the solenoid valve I.

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flows. This allows the power consumption to operate the solenoid valve to be reduced considerably. According to the invention, it is particularly advantageous if the coil of the solenoid valve and the ignition device are connected in series, since there is automatically a time delay between the opening of the solenoid valve and the triggering of the ignition spark * This ensures that the burner valve is already open and * a _r . \ there is an ignitable mixture in the area of the ignition device; when the ignition current flows. I.

In a particularly advantageous embodiment of the invention provided that a clock generator for repeated triggering J the ignition device is provided. This is a safe '

Ignition of the fuel gas guaranteed. . j

In a particularly advantageous embodiment it is provided that in the area of the burner nozzle a photoelectrically operating element which can be exposed by the flame is arranged, which is connected in the control circuit between the clock generator and control transistor and the control circuit directly or during exposure via an amplifying element, preferably a transistor, locks. This has the advantage that the repeated Activation of the ignition device is switched off after ignition of the fuel gas, the circuit according to the invention high gives the particular advantage that the clock generator that is used in according to known interpretation only, with a minor one Power consumption continues to work and so a safe shutdown

50 98 24/0485

of the control transistor of the ignition device is guaranteed. ; It is particularly advantageous if it is arranged in the control circuit between the clock generator and control transistor as a switching element a thymine 'RISTOR whose ignition is controlled by the photoelectric working element. According to the invention, the photoelectric component can be used as a photo resistor or as a photo

transistor or be designed as a photothyristor. ;

en

The invention is based on the drawing / T of exemplary embodiments, which further features of the invention can be found, described in more detail. Show it

Fig. 1 in a schematic representation of a gas lighter partially on average,

Fig. 2 is a circuit diagram of an embodiment of the electrical Ignition system with mechanical control switch,

Fig. 3 is a circuit diagram of another embodiment of the electrical Ignition system with a sensor switch as a control switch,

4 shows a circuit diagram of an electrical ignition system according to the invention with a clock generator for repeated triggering of ignition sparks.

As the schematic representation according to FIG. 1 shows, this has

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Gas lighter according to the invention a fuel container 1, j for example, for liquefied petroleum gas, in which the ι from above Burner valve system 2 is used. In this embodiment, j game, the burner valve system is designed as a solenoid valve, which is provided with a coil 3 and an armature plate 4 through which the spring-loaded burner nozzle 5, which has a closing piston 6 at its lower end, can be raised.

The electronic circuit is on the side of the fuel tank 7 attached for the electrical ignition system. Here is it is advantageous if the circuit as a so-called Aufsteckbzw. Slide-in unit is formed and in corresponding Kontaki sockets, which establish the connection with the power source, the ignition electrodes, etc., can be inserted.

The two ignition electrodes 8 are in the area of the burner nozzle 5. and 9 and a lens 10 for the photoelectric one described in more detail below Shutdown in the embodiment with a clock generator arranged.

There is also a gas pressure switch with the fuel container 1 11 in connection, the membrane 12 with sufficient fuel supply the connection between the two contacts 13 and 14 manufactures. If the fuel supply is insufficient and the fuel supply is falling Gas pressure lifts the membrane 11, so that the connection between the two contacts 13 and 14 is interrupted and so as in connection with the circuit diagram according to Fig. 4-

will be purged, an actuation of the ignition system is prevented will.

In Fig. 2 is an embodiment of the electronic 2-lane system explained in more detail using a circuit diagram. Here are the circuit diagram according to Pig. 2 and the circuit diagrams according to FIGS. 3 and 4, for the sake of clarity, is divided into three areas by the dash-dotted lines, namely area I. "Switch", area II "Control and auxiliary functions" and

τ. ■

the area III "ignition device".

As FIG. 2 shows, the ignition system is connected to a power source 15, for example a dry battery or a rechargeable one Battery connected. The ignition system is actuated via a semiconductor component, for example a thyristor 16 as Main switch. To activate the thyristor 16, a mechanical changeover switch 17 is provided, which is interposed a resistor 18 through its contact 17 ″ to the negative. Pole of the power source can be connected. Since only a small amount of power is required to activate the thyristor 16, can the switch 17 can be designed as a microswitch, corresponding to the can be built small. The switch can either be operated manually or, in the case of table lighters, with a pin on the bottom be coupled so that it closes the connection to the thyristor 16 when the lighter is raised. In rest position and to switch off the ignition device, the contact tongue of the Changeover switch on its contact 17 ', so that the thyristor 16 provided as the main switch with its grid for locking to the positive pole of the power source is connected.

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_ n V 23B0993

The ignition device III has an ignition capacitor 19 as well another thyristor 20, which has an npri transistor 21 is controlled. In the power supply to the ignition device a limiting resistor 22 is provided through which the current flow when charging the ignition capacitor 19 to protect the power source 15 is limited. On the output side, the ignition thyristor 20 is connected to a voltage amplifier 25, for example to a Transformer connected, the secondary side of which is connected to the ignition electrodes 8, 9.

The area "control and auxiliary functions" II is also connected to the same power source to which the ignition device III is connected. When the control switch 17 is actuated, the burner valve, which is designed as a solenoid valve, is opened at the same time, and a time delay element explained in more detail below ensures that an ignition spark only skips when the solenoid valve is fully open. Since a high pull-in current is initially required to operate a solenoid valve to bridge the air gap between coil and armature, but then only a low holding current is required when the valve is open, a capacitor 24 is according to the invention to reduce the power consumption in the power supply to coil 3 of the solenoid valve and a resistor 25 connected in parallel. This ensures that when the control holder 17 is actuated, a high current through the coil is initially generated until the capacitor 24 is fully charged! of the solenoid valve flows and the armature is attracted so that ^: but then due to the parallel connected, correspondingly off ;

5a9824 / 0A85

put resistor 25 the current flow is so far "limited that the armature of the burner valve is just held by the coil. This makes it possible for a lighter with a Independent power supply without significant power consumption to provide a solenoid valve that is mechanically operated Valves the structure is significantly simplified.

To ensure / that a spark does not jump over sooner than until the solenoid valve is open and an ignitable gas-air mixture is present in the area of the ignition electrodes is parallel a time delay element is provided for the control transistor 21, which consists of a capacitor 26 and a resistor 27. Through this it is ensured that the control transistor 21, which activates the ignition thyristor 20, is only permeable when the capacitor 26 is charged and a corresponding current is available at the base of the control transistor 21.

In summary, when the lighter is operated, the individual processes take place in such a way that when the control switch 17 the main switch 16, which is provided as a thyristor, becomes conductive and then the solenoid valve is initially actuated in area II while at the same time the ignition capacitor 19 is charged. Then when the capacitor 26 of the time delay element is fully charged is, the control transistor 21 activates the ignition thyristor 20 so that the ignition capacitor 19 can discharge and so on Spark skips between the two electrodes.

509824/0485

¹³ """;. 2360393

Another circuit for the ignition system is shown in FIG. 3. In this case, instead of the auxiliary switch, a sensor circuit is provided in the area I “switch” via which the as; Main switch acting thyristor 1.6 is activated. The sensor circuit has electrodes 28 and 29 * lying on the outside of the lighter, which are touched by hand for actuation! Need to become. Here, the electrode 28 is connected to the power source [ 15, while the electrode 29 at the base of a pnp- _; Transistor is connected, the collector of which is connected to the negative side of the power source. The emitter ι

of transistor 30 is connected to the base of a second transistor j

_, ί

31 connected, which via an emitter resistor 32 to the positive ·;

tiven side and a collector resistor 33 with the negative;

Side of the power source. Between the base].

and a bleeder resistor 34 is provided to the emitter. i

In the rest position, the one from the two pnp transistors 3o and;

31 existing emitter followers de-energized. When touched, flows in '

low current between the two electrodes 28 and 29 »through ^:

that a considerable current is caused by the transistor 31 \

can. The collector of transistor 31 receives a j

■ "I

positive potential compared to the negative supply line, j

This potential is connected to the via a connecting line
Grid of the thyristor 16, the anode side to the positive
Supply line is connected and the cathode side with the
Area II and the ignition direction III is in connection.

509824/0485

The area. II of the circuit is here unchanged compared to; the embodiment according to FIG. 2, while in area III, d. H. the ignition device instead of a spark gap, the ignition thyristor 20 on the cathode side via a filament 35 with the negative Supply line is in communication.

The puncture of this circuit when the lighter is actuated proceeds as follows: When the electrodes 28 and 29 are touched at the same time, the thyristor 16, which serves as the main switch, is actuated via the sensor circuit formed by the two transistors 30 and 31, so that the current flowing now causes the designed as a solenoid valve 3 burner valve is actuated and that the ignition capacitor 19 is charged at the same time. Also, since a time delay circuit is provided here, the ignition thyristor 20 is activated after charging of the capacitor 26 so that a short time high current can d ^v urch the discharge of the ignition capacitor 19 to flow through the filament 31, without thereby the power source is charged at 15 °.

In Fig. 4, a further, modified embodiment of the circuit is shown, in which by a lying in area II Clock generator 36 ensures that the ignition capacitor 19 can be charged repeatedly and so a series of ignition sparks between the electrodes 8 and 9 skips. Here, the area I is again designed as a sensor circuit, but it can also be designed according to the circuit of FIG. 2 as a mechanical switch. The structure of this circuit is basically the same,

509824/0485

■ ·. ■ · ■ '; ¹⁵ : ■ '236099 $

principle of the circuit according to FIGS. 2 and 3, but shows some -j deviations. Thus the power supply of the ignition device is connected directly to the power source via the control transistor 2.1 ', while the control transistor 21 via the clock generator 36 _{via the main switch, the thyristor 1.6''f;} is controlled in the manner described in more detail below.;

The clock generator 36 is designed as an astable multivibrator and generates 37 »38 at the collectors of its two transistors in push-pull square-wave signals roughly symmetrical in shape. Depending on ;. The design of the clock generator circuit is the transistor 37 with! when switched on or switched on in the opposite phase and generates an opposite to the negative supply line at its collector positive potential. This potential is via another [thyristor 39 to the; Base of the control transistor 21 'forwarded. As already mentioned above, the control transistor is of the HPRI type, its collector is via the current limiting resistor 22 / connected to the positive side of the power source, its emitter is connected to the ignition capacitor 19. One versus the negative Supply side positive potential at the collector of the Transistor 37 thus controls the control transistor 21 'so that the ignition capacitor 19 is charged. The ignition capacitor discharges via the low-voltage side of the voltage amplifier 23, for example a transformer, as soon as the ignition thyristor 20 is controlled. The ignition thyristor is controlled via a resistor 40 between the anode and grid, the thyristor.

509824/0485

This resistor 40 is designed so that the ignition thyristor switches on at a certain voltage. Said voltage is set below the voltage which the ignition capacitor 19 reaches during a switched-on period of the control transistor 21 ', ie during a switched-on period of the transistor 37 of the clock generator. During this duty so the ignition _is: capacitor charged and 19 - tdauer possible towards the end of the Power On - discharge the ignition thyristor 20 via · so that the voltage amplifier 23 on the secondary side generates the required spark voltage. Since the clock generator 36 to control transistor due to the almost rectangular _{Spannungsanstie-:} ges can switch quickly repeated, the spark voltage can be generated also repeated below. For a precise definition of the switch-on point of the ignition thyristor, the resistor 40 can, if necessary, be replaced or supplemented by a Zener diode unload.

In order to now prevent that when the ignition of the fuel gas '. the ignition device continues to work, in this embodiment, a photoelectrically operating element ensures that the base of the control transistor 21 'is blocked again. For this purpose, a transistor 41 of the PNP type is connected on the emitter side to the anode of the thyristor 39 and on the collector side via a resistor 42 to the grid of the thyristor 39. Between

509824/0485

A resistor 43 is connected to the collector and base of the transistor 41, and a photoresistor 44 is connected between the emitter and the base. The photoresistor is, as indicated in the schematic representation according to FIG. As long as the flame is not ignited, the transistor 41 is turned on via the resistor 43 and in turn switches the thyristor 39 through. However, as soon as the flame of the lighter burns, the photoresistor 44 becomes conductive and blocks the transistor 4L the negative supply line receives positive voltage. Thus, the control transistor 21 'is not turned on again and there is no renewed charging of the ignition capacitor 19, so that further resolution of the ignition sequences does not occur and, with the exception of the supply of the clock generator, no further energy is drawn from the current source. The construction of such clock generators can, however, be carried out in such a way that the current consumption is negligibly small in the time sequence of interest here ^; is. Instead of the circuit described in connection with the photo resistor, however, a photo transistor or photo thyristor can also be arranged. I.

"'■■" - "' - ■" ■■ "" i

The above circuit is for a table gas lighter i

piert, in which the burner valve is opened mechanically by means of a bottom pin i as soon as the lighter from its lower !

509824/0485

23 ^ 0999 I.

situation is canceled. The above circuit is, however, in the same way for a magnetically operated lighter. Burner valve can be used. In this case, the circuit described in FIGS. 2 and 3, namely the capacitor 24 and ; the resistor 25 and the solenoid 3 are connected in a corresponding manner to the power supply 45 to the clock generator behind the thyristor 16 '.

In addition, an electrically controlled, mechanically or optically operating fuel display can advantageously be provided in the power supply line 45 46 must be switched on. This fuel display can optionally be coupled to a switch 47, for example the in Fig. 1 indicated gas pressure switch, so that if the fuel is insufficient, the power supply to the clock generator is interrupted and so the ignition device is not put into operation, can be. *

Expectations

809824/0485

Claims (1)

• ■. ■■■■ - '..-.- ■ ^; - ; ■ -; ■ \ : 23βΟ999 Claims " Electrically ignitable lighter, in particular gas lighter, with a fuel supply device that is connected to a Use is provided in particular when triggering the ignition process' operable burner valve, with a preferably mains-independent power source and an ignition device, thereby .ge mark'i'Ch η e t that between the current source (15) and those which are preferably provided with electrical control elements Ignition device (III) a semiconductor component (16, 16 ·) as Main switch is arranged, the activation current of which is switched via an auxiliary or control switching device. 2. Lighter according to claim 1, ^ characterized g e k e η η ze i c h net that the main switch (16, 16 ') is a thyristor. 3. Lighter according to claim 1 or 2, in which the electrical ignition device, which is preferably fed directly from the power source, has as control elements an ignition capacitor and an ignition thyristor which is switched by a control transistor, thereby geke η η ze ic h η β t that in the power supply to the base of the control transistor (21 »21 ') consists of at least one resistor 27 and at least one capacitor | (26) existing time delay element is arranged, the capacitor (26) being connected in parallel to the applied base voltage of the control transistor (21). 9824/0485 " ²⁰ " 23S0393 4. Lighter according to claim 1, 2 or 3, characterized in that in the supply circuit upstream of the ignition device (III) and behind the main switch (16) a resistor (22) to limit the charging current for the ignition capacitor (19) is arranged. 5. Lighter according to claim 1, 2, 3 or 4 »characterized in that it identifies · net that the ignition device (III) has a spark gap (8, 9), which preferably, as known per se *, In connection with the supply circuit via a voltage amplifier (23), in particular a transformer stands. 6. Lighter according to claim 1, 2, 3 or 4, characterized in that the ignition device (III) has a known filament (35) f, preferably a filament having a relatively large cross-section. 7. Lighter according to one of claims 1 to 6, characterized in that the control switching device for Actuation of the ignition device, in particular for actuation of the main switch from a mechanical switch known per se (17) exists for currents below 0.05 amps. 8. Lighter according to one of claims 1 to 6, characterized in that that the control switching device for actuating the ignition device (III), in particular for actuating 5098-24 / 0486 ■■■ "■■. ■■ .- 2360993.- ,; supply of the main switch two mutually insulated electrodes; (28, 29) with different potentials, which are used for loading _; operation of the lighter must be touched at the same time, as well as an amplifier circuit connected to the electrodes, through which a switching element when the electrodes are connected by touch; (16, 16 ') for actuating at least the ignition device ^angesteu-: is ert. ; ; '- 9. Lighter according to claim 8, characterized geke η η ζ eich net that the amplifier circuit consists of two parallel in the circuit transistors (30, 31), wherein the base
des.ersten transistor (30) with one of the contact electrodes
(29) is connected while the base of the second transistor
(31) is connected to the emitter or collector of the first transistor (30) j, and that the emitter or collector of the ■! second transistor V (31) is connected to the switching element (16, 16 *) and supplies the activation voltage or the activation current for this purpose. ^} ■■■ ■ '■■ - ■■. '. ! 10. Lighter according to one of claims 1 to 9 ₈ thereby; indicates that the burner valve, as per se; knows, is designed as a solenoid valve (3), and that in the supply j supply circuit of the solenoid valve at least one resistor (25) i to limit the HaltesiaDm and parallel to this resistance j a capacitor (24) is connected. ' \ 11. Lighter according to one of claims 1 to 10, characterized in that: -.- ■■ - ■ - ■■: .- ■■■ ". ■ · ■.! 509824/0485 indicates that the coil of the solenoid valve (5) and the ignition device (III) are connected in series. 12. Lighter according to one of claims 1 to 11, characterized in that a clock generator (36) for the Repeated triggering of the ignition device is provided. 15. Lighter according to claim 12, characterized in that that the clock generator is preferably designed as an astable multivibrator. 14. Lighter according to one of claims 1 to 13, characterized g e code I mean that the base of the control transistor (21 V) of the ignition device is controlled via the clock generator (36) will. 15. Lighter according to one of claims 1 to 14, characterized in that a in the region of the burner nozzle by the flame exposable photoelectrically operating element (44) is arranged, which is in the control circuit between the clock generator (36) and control transistor (21 ·) is switched and on exposure blocks the control circuit directly or via an amplifying element, preferably a transistor (41). 16. Lighter according to one of claims 1 to 15, characterized in that g e code Ine t that in the control circuit between clock generator (36) and control transistor (21 ') as a switching element 509824/0485 Thyristor (39) is arranged, the ignition voltage over the photoelectrically operating element (44) is controlled » 17. Lighter according to one of claims 1 to 15, g e k en η draws by a photoelectrically operating element, the clock generator directly or via amplifying elements turns off. ; 18. Lighter according to one of claims 1 to 17 »dadurcli ge-k en η I show η e t that the photoelectric element is a Photo resistor is. 19. Lighter according to one of claims T to 17 »thereby g ek e η η ζ e i c h η et that the photoelectric element is a Phototransistor or photothyristor is. 20. Lighter according to one of claims 15, 16, 17, 18 or 19, thereby g e k e η η ζ e i c h η e t that the photoelectric Element (44) between the base and emitter of a transistor (41) whose base is connected to the at least one resistor (42) Collector is connected. 21 * Lighter according to one of claims 15, 16, 17, 18 »19 or 20, thereby g e k e η η ζ e i c h η e t that the transistor (41) is connected to the grid circuit of the thyristor (39), which is connected in series in the control circuit between the clock generator (36) and the control transistor (21 ·). . ; 509824/0485 22. Lighter according to one of claims 1 to 21, characterized by an open in the rest position Switch that is mechanically operated by a protruding pin or lever on an outside, preferably the underside of the The lighter is operated, and the electric in one line the voltage supply is or at least at one point of the control circuit the actuation of the solenoid valve (3) and the ignition device (III) locks. 23. Lighter according to one of the preceding claims, characterized by one with the fuel filling related pressure switch, preferably membrane switch (11), which is open in the depressurized state and then blocks the power supply for actuating at least the ignition device. 24. Lighter according to claim 23, characterized by a display device connected to the pressure switch. 25. Lighter according to claim 23 or 24, characterized by an indicator lamp (46) switched by the pressure switch (11)! 509824/0485 Blank page