JPH08190988A - Double spot type dc lighting of inverter type lighting circuit - Google Patents

Abstract

PURPOSE: To realize a DC lighting in a double spot method, and to reduce a radio noise, by using two systems of inverter lighting circuits, rectifying and smoothing the outputs of both circuits, and feeding a DC current to both lamps. CONSTITUTION: Two systems of inverter lighting circuits 1 are used, the outputs are rectified by rectifiers 2 and 9, and smoothed by capacitors for smoothing 3 and 10, and coils for smoothing 4 and 11, so as to obtain DC currents I-1 and I-2. The current I-1 flows through a starter 6, the voltage at the point A of a lamp 7 is made smaller than the potential at the point B, by the functions of the coil and the capacitor ballast in the circuit 1, while the current I-2 flows to the starter 6 passing through the electrode of the lamp 7. And when the starter 6 is separated from the contact, a kick voltage is generated from the coils 4 and 11, and both the two systems of circuits are to have different power sources respectively. Consequently, two negative electrode luminescent spots come out on the electrode of the lamp 7, and a DC lighting can be carried out in a double spot method.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Lighting

[0002]

2. Description of the Related Art A DC lighting circuit for double spot lighting, which uses an inverter circuit, has not been put to practical use. In addition, when the inverter method was used, radio noise was sometimes large.

[0003]

SUMMARY OF THE INVENTION An inverter lighting circuit that can use a compact and lightweight capacitor ballast or coil, and a double-spot method and direct current lighting by using an inverter circuit, and radio noise are also generated. Reduce.

[0004]

According to a first aspect of the present invention, a plurality of "mainly two systems" inverter lighting circuits are used to rectify the output of each circuit using a bridge to obtain a DC voltage for smoothing. A DC current is obtained using a coil and a smoothing capacitor, and both DC currents are supplied to the lamp. Or, in order to deal with the negative characteristics of the discharge of the lamp by using the inverter circuit, after connecting the element or the circuit having the impedance, the bridge is used to obtain the DC voltage, and then the smoothing coil or the smoothing coil is used. A capacitor is used to obtain a direct current and supply it to the lamp. Also, in these cases, the inverter circuit
It is suitable to use a blocking oscillator circuit using a transformer. In the second aspect, one of the outputs of the inverter lighting circuit is directly rectified by the bridge to obtain a DC voltage, and the other is passed through the transformer and then rectified by the bridge to obtain the DC voltage. At this time, use an insulating transformer that uses a ferrite core that is suitable for high-frequency inverter lighting circuits and that "has low power loss even at high frequencies," or use a transformer in which the primary and secondary sides are not connected by wiring. Is suitable. According to claim 3, a transformer is used at the output stage of the inverter lighting circuit or the inverter circuit. For example, when a blocking oscillator circuit is used, the secondary side of the transformer is plural "mainly, two", It is suitable to use those windings that are not connected to each other by wire connection, but rectify the output of these multiple "mainly two" using a bridge, and then use a smoothing coil or smoother. DC current is obtained by using the condenser for use, and these "mainly two" DC currents are supplied to the lamp. In claim 4, the electrode of the lamp is heated, and by applying claim 1, or claim 2, or claim 3, it is an inverter system and a double spot system rapid start system with direct current lighting. Embody. In claim 5, by applying claim 1, or claim 2, or claim 3, an instant starting method of a double spot method with direct current lighting of an inverter method is realized.

(Operation) In the present invention, when the two-system inverter lighting circuit is taken as an example, the outputs of these two systems are equivalent to having independent power supplies, and therefore these inventions should be used. Thus, DC lighting at a double spot can be realized. Further, in the present invention, since the output of the inverter lighting circuit or the inverter circuit is converted into direct current, radio noise is reduced. further,
For example, by shutting off one of the outputs of the two systems with a switch, the lamp current can be reduced to about 1/2. Also, by connecting a capacitor with a small capacity between the power source and the starting auxiliary conductor or the fluorescent lamp fixture, or by connecting it to the secondary side of the transformer, the dark end effect when the lamp is lit by direct current is achieved. In the case of resolving by reversing, rapid starting of the lamp, and instantaneous starting of the lamp, the reversing is instantaneously completed without using the starting device of the lamp, and the starting of the lamp becomes easy. Here, for example, in the case of FIG.
The current I1 flows through the starter, so that the voltage at point A in FIG. 1 becomes smaller than the voltage at point B in FIG. 1 due to the action of the coil and capacitor ballast in the inverter lighting circuit. I2 flows through the electrodes of the lamp to the starter, and when the starter leaves contact
A kick voltage is generated from the coils 4 and 11,
Since the two circuits have separate power sources, two cathode luminescent spots appear on the electrodes of the lamp, and direct current lighting and double spots are realized.

(Embodiment) For example, when the circuit of FIG. 1 is used, the illuminance of the choke coil type AC lighting circuit of the common frequency is "1", the illuminance of the circuit of FIG. The power consumption at this time was 20.5W and that of the latter was 48.0W. In this way, when using the inverter lighting circuit, the illuminance is about 1.36 times that of the double-spot type DC lighting circuit in which the power consumption is DC lighting using the common frequency, even with the same power consumption. became. It is considered that these are because the inverter type lighting circuit can use a compact and lightweight capacitor ballast and a coil, and thus the power loss is reduced.

[0007]

[Brief description of drawings]

(FIG. 1) One of the circuit diagrams to which claim 1 is applied. 1-Representing an example of an inverter lighting circuit 2-Bridge
3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8-
Starting auxiliary conductor or fluorescent light fixture 9-Bridge
10-smoothing capacitor 11-smoothing coil 12
-Switch (Fig. 2) An oscilloscope waveform showing the waveform of the current I1 in Fig. 1. (FIG. 3) An oscillographic waveform represents the waveform of the current I2 in FIG. (Fig. 4) An oscilloscope waveform shows the output voltage waveform of the inverter lighting circuit. (FIG. 5) One of the circuit diagrams to which claim 2 is applied. 1-shows an example of an inverter lighting circuit. 2-Bridge 3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8
-Starting auxiliary conductor or fluorescent lamp equipment 9-Bridge 10-Smoothing capacitor 11-Smoothing coil 1
2-transformer (Fig. 6) An oscillographic waveform represents the current I1 in Fig. 5. (FIG. 7) An oscillographic waveform represents the current I2 in FIG. (FIG. 8) An oscillographic waveform represents the output voltage waveform of the inverter lighting circuit of FIG. (FIG. 9) One of the circuit diagrams to which claim 3 is applied. 1-shows an example of an inverter lighting circuit. 2-Bridge 3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8
-Starting auxiliary conductor or fluorescent lamp fixture 9-Bridge 10-Smoothing capacitor 11-Smoothing coil (Fig. 10) One of the circuit diagrams to which claim 4 is applied. 1-shows an example of an inverter lighting circuit. 2-Bridge 3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8
-Starting auxiliary conductor or fluorescent lamp equipment 9-Bridge 10-Smoothing capacitor 11-Smoothing coil 1
2-Capacitor 13-Switch (Fig. 11) is an oscillographic waveform showing a voltage waveform for heating the electrodes of the lamp in claim 4.

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[Procedure amendment]

[Submission date] August 19, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Title of Invention] Double-spot DC lighting of inverter lighting circuit

(Claims) (Claim 1) In order to realize double-spot DC lighting of an inverter type lighting circuit, a plurality of "mainly, two systems" inverter lighting circuits are used, and each output is a bridge. After rectification, a smoothing capacitor and a smoothing coil are used to obtain a DC voltage, and these two DC currents are supplied to the lamp. Or the inverter circuit
Multiple "mainly, two systems" are used, except to use a stable resistor alone to cope with the negative characteristics of the discharge of the lamp,
Connect elements or circuits that have impedance,
After that, a DC voltage is obtained by using a bridge, and after that, this is supplied to a lamp through a smoothing coil and a smoothing capacitor. (Claim 2) In order to realize the DC lighting of the double-spot method of the inverter type lighting circuit, the output of the inverter lighting circuit is rectified by using the bridge as it is, and the other side is rectified to obtain the DC voltage. , After passing through a transformer "mainly a ferrite core transformer", rectify it using a bridge to obtain a DC voltage, then both obtain a DC voltage through a smoothing coil and a smoothing capacitor, and then use this lamp Supply to. Or, in order to deal with the negative characteristics of the discharge of the lamp in the inverter circuit, except for the use of a stable resistor alone, an element with impedance, or after going through the circuit, one is rectified using the bridge as it is. The DC voltage is obtained, and the other one is passed through a transformer "mainly a ferrite core transformer" and then rectified using a bridge to obtain the DC voltage. After that, both are used for smoothing coils and smoothing. A DC voltage is obtained through the capacitor and this is supplied to the lamp. (Claim 3) In order to realize direct current lighting at the double spot of the inverter lighting circuit, the inverter lighting circuit is provided with:
When a transformer is used at the output stage, such as a blocking oscillator, a plurality of windings on the secondary side of the transformer are wound "These are mainly two, and a circuit. In order to suppress the circulating current in the inside, "these windings are preferably not connected to each other by wiring", and these outputs are rectified by a bridge, and a smoothing capacitor and a smoothing coil are connected. Then, a DC voltage is obtained and these are supplied to the lamp. Or, in an inverter circuit, a transformer is used at the output stage, and a plurality of windings of the secondary side output of this transformer are wound. "Mainly, these windings are not connected to each other by wiring. Is suitable for these outputs, through a smoothing capacitor and a smoothing coil after connecting an element or circuit having impedance to cope with the negative characteristics of the discharge of the lamp. Obtain a direct current and supply it to the lamp. (Claim 4) When an inverter lighting circuit is applied by applying Claim 1, or Claim 2, or Claim 3, the terminal for electrode heating of the inverter lighting circuit is mainly used. By connecting to the electrode of the lamp, DC lighting,
In addition, a rapid start is performed with the double spot method. Or, apply a voltage for heating the electrodes to the electrodes of the lamp,
Rapidly start the lamp. (Claim 5) By applying claim 1, or claim 2, or claim 3, the starter is removed to obtain a voltage equal to or higher than the lamp starting voltage, so that the lamp can be operated by direct current and double spot. Method to instantly start. (Claim 6) The lamp current can be reduced to about 1/2 by shutting off one of the two-system lighting circuits connected to the lamp by a switch. (Claim 7) When the dark end effect of the lamp is solved by reversing, or when the rapid start method and the instantaneous starting method are used, the reversing of the lamp is performed instantaneously without using a lamp starting device. As shown in the figure, and for facilitating the starting of the lamp, a small capacity capacitor is connected between the power source and the starting auxiliary conductor or the fluorescent lamp fixture. Alternatively, at the output stage of the inverter circuit, connect a starting auxiliary conductor or a fluorescent lamp fixture to the transformer terminal. (Claim 8) In Claims 1, 2, 3, 4, and 5, a "rectifier" other than the "bridge" may be used to obtain a DC voltage. For example, when the "double voltage rectifier circuit" is used in FIG. 1, the lamp can be instantly started except for the "starter".

Description: (0001) (Industrial field of application) Lighting field (0002) (Prior art) A DC lighting circuit for double-spot lighting, to which an inverter circuit is applied, has not been put to practical use. In addition, when the inverter method was used, radio noise was sometimes severe. (0003) (Problems to be solved by the invention) A double-spot system and direct-current lighting are realized by using an inverter lighting circuit or an inverter circuit capable of using a compact and lightweight capacitor ballast or coil. It also reduces radio noise. (0004) (Means for Solving the Problem) In the case of claim 1, a plurality of "mainly, two systems" of inverter lighting circuits are used, the output of each circuit is rectified using a bridge, and a DC voltage is obtained. , DC current is obtained by using the smoothing coil and smoothing capacitor, and both of these DC currents are supplied to the lamp. Or, in order to deal with the negative characteristics of the discharge of the lamp by using the inverter circuit, after connecting the element or the circuit having the impedance, the bridge is used to obtain the DC voltage, and then the smoothing coil or the smoothing coil is used. A capacitor is used to obtain a direct current and supply it to the lamp. Also, in these cases, the inverter circuit
It is suitable to use a blocking oscillator circuit using a transformer. In the second aspect, one of the outputs of the inverter lighting circuit is directly rectified by the bridge to obtain a DC voltage, and the other is passed through the transformer and then rectified by the bridge to obtain the DC voltage. At this time, it is suitable to use a transformer that uses a ferrite core that is suitable for high-frequency inverter lighting circuits and that "has low power loss even at high frequencies." In claim 3, a transformer is used at the output stage of the inverter lighting circuit or the inverter circuit. For example, when a blocking oscillation circuit is used, the transformer has a plurality of "mainly two" secondary sides, These windings,
It is suitable to use those that are not connected to each other by wire connection, but these multiple "mainly two" outputs are rectified using a bridge, and then using a smoothing coil or smoothing capacitor, Obtain a DC current and supply multiple "mainly two" DC currents to the lamp. In claim 4, the electrode of the lamp is heated, and by applying claim 1, or claim 2, or claim 3, a rapid start method of an inverter method and a double spot method with direct current lighting is applied. Embody. In claim 5, claim 1 or
By applying claim 2 or claim 3, an instant starting method of a double spot method with direct current lighting of an inverter method is realized. Further, in claim 8, "instantaneous start" or "rapid
Start ”will be possible. (0005) (Operation) In the present invention, if the two-system inverter lighting circuit is taken as an example, the outputs of these two systems are equivalent to having independent power supplies, so use these inventions. Thus, DC lighting at a double spot can be realized. Further, in the present invention, since the output of the inverter lighting circuit or the inverter circuit is converted into direct current,
Radio noise will be reduced. Furthermore, for example, 2
By shutting off one of the outputs of the grid by a switch, the lamp current can be halved. Also, by connecting a capacitor with a small capacity between the power source and the starting auxiliary conductor or the fluorescent lamp fixture, or by connecting it to the secondary side of the transformer, the dark end effect when the lamp is lit by direct current is achieved. When the problem is solved by reversing, when the lamp is rapidly started, or when the lamp is instantly started, the reversal is instantly completed without using the starting device of the lamp, and the starting of the lamp becomes easy. Here, for example, in the case of FIG.
1 flows through the starter, so that the voltage at point A in FIG. 1 becomes smaller than the voltage at point B in FIG. 1 due to the action of the coil and capacitor ballast in the inverter lighting circuit, and the current I2 Flows through the electrodes of the lamp to the starter, and when the starter leaves the contact, a kick voltage is generated from the coils 4 and 11, each of the two circuits having a separate power supply. As a result, two cathode bright spots appear on the electrode of the lamp, and DC lighting is performed, and a double spot is realized. (0006) (Embodiment) For example, when the circuit of FIG. 1 is used, the illuminance of the circuit of FIG. of,
About 2.1 times, the power consumption at this time is 23.
At 7W, the latter was 48.0W. (0007)

BRIEF DESCRIPTION OF THE DRAWINGS (FIG. 1) One of circuit diagrams to which claim 1 is applied. 1-Representing an example of an inverter lighting circuit 2-Bridge
3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8-
Starting auxiliary conductor or fluorescent light fixture 9-Bridge
10-smoothing capacitor 11-smoothing coil 12
-Switch (Fig. 2) An oscilloscope waveform showing the waveform of the current I1 in Fig. 1. (FIG. 3) An oscillographic waveform represents the waveform of the current I2 in FIG. (Fig. 4) An oscilloscope waveform shows the output voltage waveform of the inverter lighting circuit. (FIG. 5) One of the circuit diagrams to which claim 2 is applied. 1-shows an example of an inverter lighting circuit. 2-Bridge 3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8
-Starting auxiliary conductor or fluorescent lamp equipment 9-Bridge 10-Smoothing capacitor 11-Smoothing coil 1
2-transformer (Fig. 6) An oscillographic waveform represents the current I1 in Fig. 5. (FIG. 7) An oscillographic waveform represents the current I2 in FIG. (FIG. 8) An oscillographic waveform represents the output voltage waveform of the inverter lighting circuit of FIG. (FIG. 9) One of the circuit diagrams to which claim 3 is applied. 1-shows an example of an inverter lighting circuit. 2-Bridge 3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8
-Starting auxiliary conductor or fluorescent lamp fixture 9-Bridge 10-Smoothing capacitor 11-Smoothing coil (Fig. 10) One of the circuit diagrams to which claim 4 is applied. 1-shows an example of an inverter lighting circuit. 2-Bridge 3-Smoothing condenser 4-Smoothing coil 7-Lamp 8-Starting auxiliary conductor or fluorescent lamp fixture 9-
Bridge 10-smoothing capacitor 11-smoothing coil 12-capacitor 13-switch (Fig. 11) is an oscillographic waveform, and in claim 4, represents a voltage waveform for heating the electrode of the lamp.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction method] Change

[Correction content]

FIG.

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 9]

[Figure 10]

FIG. 11 ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 23, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Title of Invention] Double-spot DC lighting of inverter lighting circuit

[Claims]

Detailed Description of the Invention

[0001]

[Industrial application] Lighting

[0002]

2. Description of the Related Art A DC lighting circuit for double spot lighting, which uses an inverter circuit, has not been put to practical use. Further, in the case of the inverter method lighting, in order to reduce the size and weight, the radio noise may be large when the oscillation frequency is high.

[0003]

The inverter lighting circuit and the inverter circuit, which can use small and light condenser ballasts and coils, realize double-spot system and direct current lighting. At high frequencies, it also reduces radio noise "to reduce size and weight".

[0004]

[Means for Solving the Problems] In the case of FIG. 1, a plurality of "mainly, two systems" of inverter lighting circuits are used to rectify the output of each circuit using a rectifier to obtain a DC voltage and a smoothing capacitor. A DC current is obtained by using a coil for smoothing, and both DC currents are supplied to the lamp. Or, in order to deal with the negative characteristics of the discharge of the lamp by using the inverter circuit, after connecting the element or the circuit having the impedance, the DC voltage is obtained by using the rectifier, and then the smoothing capacitor or the smoothing capacitor is used. A coil is used to obtain a direct current and supply it to the lamp. Further, in these cases, it is suitable to use a blocking oscillation circuit or the like that uses a transformer at the output stage for the inverter circuit. In Figure 5, the output of the inverter lighting circuit, one is rectified by the rectifier to obtain the DC voltage, and the other is
After passing through the transformer, it is rectified using a bridge to obtain a DC voltage. At this time, in order to reduce the size and weight, when using an inverter lighting circuit with a high operating frequency, it is suitable to use a transformer that uses a ferrite core that is suitable for it and that has low power loss even if the frequency is high. There is. In FIG. 9, when a transformer is used at the output stage of the inverter lighting circuit or the inverter circuit, for example, when a blocking oscillator circuit is used, a plurality of secondary sides of the transformer are “mainly, 2
It is suitable to use those which are not connected to each other by wire connection, but these multiple "mainly two" outputs are rectified using a rectifier, and then
A DC current is obtained using a smoothing capacitor and a smoothing coil, and a plurality of "mainly two" DC currents are supplied to the lamp. In FIG. 10, the electrodes of the lamp are heated and the above circuit is applied to implement a rapid start method of an inverter method and a double spot method with direct current lighting. Furthermore, by applying the above-mentioned circuit, the instant start method by the double spot method in the direct current lighting of the inverter method is realized.

[0005]

In the present invention, if the two-system inverter lighting circuit is taken as an example, the outputs of these two systems are equivalent to having independent power sources, and therefore, by using these inventions, double output can be achieved.・ Direct current lighting at the spot can be realized. Further, in the present invention, since the output of the inverter lighting circuit or the inverter circuit is converted into direct current,
To reduce the size and weight, radio noise will be reduced when an inverter circuit with a high operating frequency is used. Furthermore, for example, the lamp current can be reduced to about ½ by cutting off one of the outputs of the two systems with a switch. For example, in the case of FIG. 1, the current I1 flows through the starter, which causes the voltage at point A in FIG.
Due to the action of the coil and condenser ballast in the inverter lighting circuit, the voltage becomes smaller than the voltage at point B in Fig. 1, and the current I2 flows through the lamp electrodes to the starter.
Then, when the starter leaves the contact, a kick voltage is generated from the coils 4 and 11, and each of the two circuits has a separate power source, so that a cathode bright spot is present on the lamp electrode. Two of them appear, are lit by direct current, and have double spots.

[0006]

[Example] For example, when the circuit of FIG. 1 is used and the illuminance of the choke coil type AC lighting circuit of the common frequency is “1”, the illuminance of the circuit of FIG.
About 2.1 times, the power consumption at this time is 23.
At 7W, the latter was 48.0W.

[0007]

[Brief description of drawings]

FIG. 1 shows one of the circuit diagrams to which claim 1 is applied. 1-Representing an example of an inverter lighting circuit 2-Bridge
3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-
Starter 7-Lamp 8-Starting auxiliary conductor or fluorescent lamp fixture 9-Bridge 10-Smoothing capacitor 11-Smoothing coil 1
2-switch

2 is an oscillographic waveform showing the waveform of the current I1 in FIG.

FIG. 3 is an oscillographic waveform showing the waveform of the current I2 in FIG.

FIG. 4 is an oscillographic waveform showing an output voltage waveform of the inverter lighting circuit.

FIG. 5 shows one of the circuit diagrams to which claim 1 is applied. 1-shows an example of an inverter lighting circuit. 2-Bridge 3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8
-Starting auxiliary conductor or fluorescent lamp equipment 9-Bridge 10-Smoothing capacitor 11-Smoothing coil 1
2-trans

6 is an oscilloscope waveform showing the current I1 in FIG.

7 is an oscilloscope waveform showing the current I2 of FIG.

8 is an oscillographic waveform showing an output voltage waveform of the inverter lighting circuit of FIG.

FIG. 9 shows one of the circuit diagrams to which claim 1 is applied. 1-shows an example of an inverter lighting circuit. 2-Bridge 3-Smoothing capacitor 4-Smoothing coil 5-Noise-preventing capacitor 6-Starter 7-Lamp 8
-Starting auxiliary conductor or fluorescent light fixture 9-Bridge
10-smoothing capacitor 11-smoothing coil

FIG. 10 shows one of the circuit diagrams to which claim 1 is applied. 1-shows an example of an inverter lighting circuit. 2, Bridge 3-Smoothing Capacitor 4-Smoothing Coil 7-Lamp 8-Starting Auxiliary Conductor or Fluorescent Lamp Equipment 9-Bridge 10-Smoothing Capacitor 11-Smoothing Coil 12-Capacitor 13-Switch

FIG. 11 is an oscilloscope waveform showing a voltage waveform for heating the electrodes of the lamp according to claim 4;

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

FIG.

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 9]

[Figure 10]

FIG. 11

Claims (8)

[Claims] 1. In order to realize double-spot direct current lighting of an inverter type lighting circuit, a plurality of "mainly, two systems" of inverter lighting circuits are used, each output is rectified by a bridge, and then smoothed. A DC voltage is obtained using a condenser and a smoothing coil, and these two DC currents are supplied to the lamp. Or the inverter circuit
Multiple "mainly, two systems" are used, except to use a stable resistor alone to cope with the negative characteristics of the discharge of the lamp,
Connect elements or circuits that have impedance,
After that, a DC voltage is obtained by using a bridge, and after that, this is supplied to a lamp through a smoothing coil and a smoothing capacitor. 2. In order to realize double spot type direct current lighting of an inverter type lighting circuit, one of the outputs of the inverter lighting circuit is directly rectified using a bridge to obtain a direct current voltage, and the other is output. , After passing through a transformer "mainly a ferrite core transformer", rectify it using a bridge to obtain a DC voltage, then both obtain a DC voltage through a smoothing coil and a smoothing capacitor, and then use this lamp Supply to. Or, in order to deal with the negative characteristics of the discharge of the lamp in the inverter circuit, except for the use of a stable resistor alone, an element with impedance, or after going through the circuit, one is rectified using the bridge as it is. The DC voltage is obtained, and the other one is passed through a transformer "mainly a ferrite core transformer" and then rectified using a bridge to obtain the DC voltage. After that, both are used for smoothing coils and smoothing. A DC voltage is obtained through the capacitor and this is supplied to the lamp. 3. An inverter lighting circuit, in order to realize direct current lighting at a double spot of the inverter lighting circuit,
When a transformer is used at the output stage, such as a blocking oscillator, a plurality of windings on the secondary side of the transformer are wound "These are mainly two, and a circuit. In order to suppress the circulating current in the inside, "these windings are preferably not connected to each other by wiring", and these outputs are rectified by a bridge, and a smoothing capacitor and a smoothing coil are connected. Then, a DC voltage is obtained and these are supplied to the lamp. Or, in an inverter circuit, a transformer is used at the output stage, and a plurality of windings of the secondary side output of this transformer are wound. "Mainly, these windings are not connected to each other by wiring. Is suitable for these outputs, through a smoothing capacitor and a smoothing coil after connecting an element or circuit having impedance to cope with the negative characteristics of the discharge of the lamp. Obtain a direct current and supply it to the lamp. 4. When an inverter lighting circuit is applied by applying claim 1, or claim 2, or claim 3, the terminal for heating the electrode of the inverter lighting circuit is mainly used. By connecting to the electrode of the lamp, DC lighting,
In addition, a rapid start is performed with the double spot method. Or, apply a voltage for heating the electrodes to the electrodes of the lamp,
Rapidly start the lamp. 5. By applying claim 1, or claim 2, or claim 3, the starter is removed to obtain a voltage equal to or higher than the lamp starting voltage, so that the lamp can be operated by direct current and double spot. Method to instantly start. 6. A lamp current can be reduced to about 1/2 by shutting off one of two lighting circuits connected to the lamp by a switch. 7. When the dark end effect of the lamp is solved by reversing, or when the rapid start method and the instant starting method are used, the reversing of the lamp is performed instantaneously without using a starting device for the lamp. As shown in the figure, and for facilitating the starting of the lamp, a small capacity capacitor is connected between the power source and the starting auxiliary conductor or the fluorescent lamp fixture. Alternatively, at the output stage of the inverter circuit, connect a starting auxiliary conductor or a fluorescent lamp fixture to the transformer terminal. 8. A rectifier other than the "bridge" may be used to obtain a DC voltage in claims 1, 2, 3, 4, and 5. For example, when the "double voltage rectifier circuit" is used in FIG. 1, the lamp can be instantly started except for the "starter".