JPH0697638B2 - Igniter for high pressure discharge lamp - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an igniter for a high pressure discharge lamp that generates a high voltage for starting a high pressure discharge lamp such as a HID lamp (for example, a metal halide lamp). .

[Conventional technology]

FIG. 8 shows a conventional high pressure discharge lamp lighting device for lighting a high pressure discharge lamp. In FIG. 8, V _s is an AC power source, BL is a discharge lamp ballast, IG is a high pressure discharge lamp igniter, DL is a high pressure discharge lamp, and C ₁ is a bypass capacitor.

This high pressure discharge lamp lighting device, when the AC power supply V _s is turned on,
A voltage higher than at least the power supply voltage is generated between the output terminals a and b of the discharge lamp ballast BL, and is applied across the high pressure discharge lamp DL.

On the other hand, the igniter IG for high pressure discharge lamp operates at this voltage,
A high-voltage pulse voltage of about several thousand V for starting the high-pressure discharge lamp DL is generated from the igniter IG for high-pressure discharge lamp, and a bypass capacitor C ₁ connected between the output terminals a and b of the discharge lamp ballast BL is used. It is applied across the high pressure discharge lamp DL. This high-voltage pulse voltage starts the high-pressure discharge lamp DL, and the high-current discharge lamp DL stably maintains lighting by the current limiting action of the discharge lamp ballast BL.

After the high-pressure discharge lamp DL is lit, the voltage between the output terminals a and b of the discharge lamp ballast BL decreases to approximately the lamp voltage, and the operation of the high-pressure discharge lamp igniter IG stops.

9 to 12 show specific circuit examples of the conventional igniter IG for a high pressure discharge lamp used in the high pressure discharge lamp lighting device of FIG.

FIG. 9 shows a conventional igniter IG ₄ for a high pressure discharge lamp. In FIG. 9, PT ₁ is a pulse transformer for generating a high voltage pulse voltage, n ₁ is a primary winding, and n ₂ is a secondary winding. R ₁ , R ₂
Is a resistor, C ₂ and C ₃ are capacitors, S ₁ is a switch element for trigger such as SBS (silicon bilateral switch), and TR ₁ is a switch element for discharge such as triac.

This high-pressure discharge lamp igniter IG ₄ is charged with a capacitor C ₂ through a resistor R ₁ when a voltage (either a sine wave or a rectangular wave is acceptable) is applied between the output terminals a and b of the discharge lamp ballast BL. , The capacitor C ₃ is charged through the resistors R ₁ and R ₂ ,
Their voltage gradually rises.

Increases the voltage of the capacitor C ₃ reaches a breakover voltage of the switching element S _1, conducts the switching element S _1, the charge stored in the capacitor C ₃ to the gate of the switching element TR ₁ through the switch element S ₁ Is released. This gate current causes the switch element TR ₁ to conduct and the capacitor C ₂
The electric charge stored in the pulse transformer PT ₁ is discharged through the primary winding n ₁ . At this time, a high-voltage pulse voltage (several thousands of V) is generated in the secondary winding n ₂ of the pulse transformer PT ₁ according to the primary-secondary winding ratio, and this high-voltage pulse voltage is high voltage through the bypass capacitor C _1. The high pressure discharge lamp DL is started by being applied across the discharge lamp DL.

When the high-pressure discharge lamp igniter IG ₄ of FIG. 9 as described above is used in the high-pressure discharge lamp lighting device of FIG. 8, for example, when the power of the high-pressure discharge lamp DL, which is a load, increases, the lamp current also increases, pulse transformer PT ₁ of must be increased wire diameter of the secondary winding n _2, the pulse transformer PT ₁ is or large, or the temperature rise due to heat generation of the pulse transformer PT ₁ has a drawback of such increases. Further, since a rectangular wave lamp current flows through the secondary winding n ₂ of the pulse transformer PT ₁ for lighting the high pressure discharge lamp DL in a rectangular wave, there is a problem that a large noise is generated from the pulse transformer PT ₁ .

As a solution to the above problems, an igniter IG ₅ for a high pressure discharge lamp has been proposed as shown in FIG. The igniter IG ₅ for a high-pressure discharge lamp is _one in which the pulse transformer PT _{1 in} FIG. 9 is divided into two, and two sets of primary side circuits of the pulse transformer are provided accordingly. 10th
In the figure, PT ₁₁ is a pulse transformer having a primary winding n ₁₁ and a secondary winding n ₁₂ . The PT ₁₂ is a pulse transformer having a primary winding n ₂₁ and a secondary winding n ₂₂ . Then, the combined voltage of the secondary windings n ₁₂ and n ₂₂ of both pulse transformers PT ₁₁ and PT _{12 is} the secondary winding n of the pulse transformer PT ₁ of FIG.
It is set to be the same as the induced voltage of ₂ .

R ₁₁ , R ₁₂ , and R ₂ are resistors, C ₂₁ , C ₂₂ , and C ₃ are capacitors, S ₁ is a switching element such as SBS, and TR ₁₁ and TR ₁₂ are switching elements for discharging such as triacs. .

The operation of the igniter IG ₅ for a high pressure discharge lamp is the same as that of the igniter IG ₄ for a high pressure discharge lamp in FIG.

The igniter IG ₅ for a high pressure discharge lamp shown in FIG. 10 uses two pulse transformers PT ₁₁ and PT ₁₂ to achieve downsizing and noise reduction of the pulse transformer as a whole.

The pulse transformers PT ₁₁ and PT ₁₂ in FIG.
In many cases, the configuration shown in FIG. 11 and FIG. 12 is adopted.
That is, the pulse transformers PT ₁₁ and PT ₁₂ have a structure in which an E-type or EI-type ferrite core is used for the magnetic core, and as shown in the cross-sectional views in FIGS. ₁ and BO ₂ are respectively wound with secondary windings n ₁₂ and n _22, and primary windings n ₁₁ and n ₂₁ are wound thereon with insulating sheets IS ₁ and IS ₂ interposed therebetween. is there. B is a pulse transformer PT ₁₁
Is a winding start terminal, A is a winding end terminal, D is a winding start terminal of the pulse transformer PT ₁₂ , and C is a winding end terminal.

The polarities of the pulse transformers PT ₁₁ and PT ₁₂ are as shown in Fig. 11 (only the necessary parts are shown).
BL is the secondary winding n ₁₂ winding end terminal A of the connection of the output terminal a (bypass capacitor C ₁ of the one end) to the pulse transformer PT _11, the pulse transformer PT ₁₂ to the terminal B winding start of the secondary winding n ₁₂ The winding end terminal C of the secondary winding n ₂₂ of is connected,
One end of the high pressure discharge lamp DL is connected to the winding start terminal D of the secondary winding n ₂₂ , and the other end of the high pressure discharge lamp DL is a discharge lamp ballast.
By connecting to the output terminal b of BL (the other end of the bypass capacitor C ₁ ), each secondary winding of the pulse transformers PT ₁₁ and PT ₁₂
n _12, n ₂₂ and the high-pressure discharge lamp DL is connected in series to form a loop circuit with a bypass capacitor C _1.

When the igniter IG ₅ for a high pressure discharge lamp is operated in such a configuration, each secondary winding n of the pulse transformers PT ₁₁ and PT ₁₂
High-voltage pulse voltages v _p1 and v _p2 are generated at ₁₂ and n ₂₂ , respectively,
The combined voltage of the high-voltage pulse voltages v _p1 and v _p2 is applied across the high-voltage discharge lamp DL through the bypass capacitor C ₁ .

In order to quickly start the high-pressure discharge lamp DL, it is necessary that the high-voltage pulse voltages v _p1 and v _p2 are usually about 2000 to 3000 v.

[Problems to be Solved by the Invention] In the igniter IG ₅ for a high-pressure discharge lamp, which has a configuration in which the pulse transformer is divided into two parts, the pulse transformer PT ₁₂ has a configuration as shown in FIGS. 11 and 12. Secondary winding n
_{When a} high voltage pulse voltage is generated from ₂₂ , the secondary winding n
200 between the winding end terminal C of ₂₂ and the primary winding n ₂₁
High voltage pulse voltage of 0 ~ 3000v will be applied,
In the case of the configuration shown in FIG. 12, since the distance between the winding end terminal C of the secondary winding n ₂₂ and the primary winding n ₂₁ is short, the winding end terminal C of the secondary winding n ₂₂ and the primary winding n ₂₁ are Dielectric breakdown may occur between the two.

In order to prevent such dielectric breakdown, it is necessary to secure an insulation distance between the primary winding n ₂₁ and the secondary winding n _22. For this reason, it is necessary to take measures such as increasing the thickness of the insulating sheet IS _2. The pulse transformer PT ₁₂ has a problem that the shape thereof becomes large as a result.

A high-voltage pulse voltage of 4000 to 6000 V is also applied between the winding start terminal D of the secondary winding n ₂₂ of the pulse transformer PT ₁₂ and the primary winding n _{21. Since} the winding structure of the secondary winding ₂₁ and the secondary winding n ₂₂ has a large distance, there is no problem of dielectric breakdown.

Regarding the secondary winding n ₁₂ of the pulse transformer PT ₁₁ ,
The end-of-winding terminal A is connected to the output terminal a (one end of the bypass capacitor C ₁ ) of the discharge lamp ballast BL and serves as a low voltage terminal to which only a low voltage as high as the power supply voltage is applied.
Even if the distance between the winding end terminal A of the secondary winding n ₁₂ and the primary winding n ₁₁ is short, sufficient insulation between them can be ensured.

On the other hand, the winding start terminal B of the secondary winding of the pulse transformer PT ₁₁
If between the primary winding n ₁₁ is so that the high-voltage pulse voltage of 2000~3000V is applied, during which the winding structure of the primary winding n ₂₁ and the secondary winding n _22, the distance Since it is large, there is no problem of dielectric breakdown.

As described above, when two pulse transformers PT ₁₁ and PT ₁₂ are provided and the secondary windings n ₁₂ and n ₂₂ are collectively connected in series on one side of the high pressure discharge lamp DL, the high pressure discharge lamp A high voltage pulse voltage is applied to both the winding start terminal D and the winding end terminal C of the secondary winding n ₂₂ of the pulse transformer PT ₁₂ closer to DL, and in order to prevent dielectric breakdown due to this, The problem arises that the pulse transformers PT ₁₁ and PT ₁₂ become larger.

An object of the present invention is to provide an igniter for a high pressure discharge lamp, which can reduce the size and weight of the pulse transformer, and can prevent the dielectric breakdown of the pulse transformer to improve the reliability.

[Means for Solving the Problems]

The igniter for a high-pressure discharge lamp according to the present invention is such that the secondary windings of the first and second pulse transformers for generating a high voltage are dispersed on both electrode sides of the high-pressure discharge lamp.
A high pressure discharge lamp igniter in which each secondary winding of the pulse transformer and the high pressure discharge lamp are connected in series, wherein winding start terminals and winding end of each secondary winding of the first and second pulse transformers are provided. One of the terminals, which is closer to the primary winding, is connected to the power source side for lighting the high-pressure discharge lamp, and one of the winding start terminal and the winding end terminal of each secondary winding, which is farther from the primary winding. Is connected to the high-pressure discharge lamp.

[Action]

According to the configuration of the present invention, when high voltage pulse voltage is generated from the secondary windings of the first and second pulse transformers,
The winding start terminal and winding end terminal of each secondary winding of the first and second pulse transformers, whichever is closer to the primary winding, becomes the low-voltage terminal, and the winding start terminal and winding end of each secondary winding. The terminal that is farther from the primary winding becomes the high-voltage terminal. That is, the distance from the primary winding of the high voltage terminal of the winding start terminal and the winding end terminal of the secondary winding becomes large, and the distance from the primary winding of the low voltage terminal becomes small. Dielectric breakdown between the primary and secondary windings of the pulse transformer is prevented.

〔Example〕

A first embodiment of the present invention will be described with reference to FIGS. 1 and 2. This igniter IG ₁ for high pressure discharge lamp is
As shown in the drawings and FIGS. 2A and 2B, from the primary windings n ₁₁ and n ₂₁ of both terminals of the secondary windings n ₁₂ and n ₂₂ of the pulse transformers PT ₁₁ and PT ₁₂ , respectively. The winding end terminals A and C that are closer to each other are connected to the output terminals a and b of the discharge lamp ballast BL which is the power source side for lighting the high pressure discharge lamp DL, and the secondary windings n ₁₂ and n are connected. Of the ₂₂ terminals, the winding start terminals B and D, which are farther from the primary windings n ₁₁ and n ₂₁ , respectively, are connected to both electrodes of the high-pressure discharge lamp DL.

Compared with FIG. 10 of the conventional example, pulse transformers PT ₁₁ and PT
There is no change in the structure of ₁₂ itself, as is apparent from a comparison of FIG. 2 and FIG. 12, and the secondary windings n ₁₂ and n ₂₂ of the pulse transformers PT ₁₁ and PT ₁₂ sandwich the high pressure discharge lamp DL. On both sides with
Of the terminals of the secondary windings n ₁₂ and n ₂₂ , the winding start terminals B and D, which are separated from the primary windings n ₁₁ and n ₂ , respectively, are connected to both electrodes of the high-pressure discharge lamp DL. _The difference is that the connection polarity of the primary winding n ₂₁ of the pulse transformer PT ₁₂ is opposite to that shown in FIG. 10 so that the voltages v _p1 and v _p2 of ₁₂ and n ₂₂ are combined with additive polarity. Other circuit configurations are the same as those in FIG.

The igniter IG ₁ for a high-pressure discharge lamp, when a voltage (whether a sine wave or a rectangular wave is acceptable) is applied between the output terminals a and b of the discharge lamp ballast BL, the capacitors C ₂₁ and C ₂₂ cause the resistance R _{11 to change.} ， R
Each is charged through ₁₂ and capacitor C ₃ is a resistor
It is charged through R ₁₂ and R ₂ , and each voltage gradually rises.

Increases the voltage of the capacitor C ₃ reaches a breakover voltage of the switching element S _1, switching element S ₁ is turned, switching element TR ₁₁ electrical charge stored in the capacitor C ₃ through the switch element S _1, TR ₁₂ Emitted to the gate of. This gate current causes the switching elements TR ₁₁ and TR ₁₂ to conduct,
The charge stored in the capacitors C ₂₁ and C ₂₂ is the pulse transformer.
It is emitted through the primary windings n ₁₁ and n ₂₁ of PT ₁₁ and PT ₁₂ . In this case, the pulse transformer PT _11, PT ₁₂ of the secondary winding n _12, n _22, the primary secondary high-voltage pulse voltage (several thousands V in accordance with the turns ratio
Is generated, and a voltage obtained by adding and synthesizing both high-voltage pulse voltages is applied across the high-pressure discharge lamp DL through the bypass capacitor C ₁ to start the high-pressure discharge lamp DL.

According to a high pressure discharge lamp igniter IG ₁ of this embodiment, when the high-voltage pulse voltage v _p1, v _p2 from the pulse transformer PT _11, PT ₁₂ of the secondary winding n _12, n ₂₂ occurs, the pulse transformer PT
_Of the winding start terminals B and D and the winding end terminals A and C of the secondary windings n ₁₂ and n ₂₂ of ₁₁ and PT _12, the one closer to the primary windings n ₁₁ and n ₂₁ is the low voltage terminal, Primary winding of winding start terminals B, D and winding end terminals A, C of each secondary winding n ₁₂ , n ₂₂
The one that is farther from n ₁₁ and n ₂₁ is the high-voltage terminal. That is, the distance from the primary windings n ₁₁ and n ₂₁ of the winding start terminals B and D and the winding end terminals A and C of the secondary windings n ₁₂ and n ₂₂ is large, and The distance from windings n ₁₁ and n ₂₁ is small.

In this case, the winding start terminal B of the secondary winding n ₁₂ and the primary winding n ₁₁
A high-voltage pulse voltage of 2000 to 3000 V is applied between and, while a sufficient distance can be taken during this period, as is apparent from FIG. On the other hand, the distance between the winding end terminal A of the secondary winding n ₁₂ and the primary winding n ₁₁ is small, but the voltage applied during this period is sufficiently low and there is no problem in terms of insulation.

A high-voltage pulse voltage of 2000 to 3000 V is applied between the winding start terminal D of the secondary winding n ₂₂ and the primary winding n ₂₁ , but a sufficient distance is provided during this period, as is apparent from FIG. Can be taken. On the other hand, although the distance between the winding end terminal C of the secondary winding n ₂₂ and the primary winding n ₂₁ is small, the winding end terminal C
Is the same potential as the output terminal b of the discharge lamp ballast BL, and is applied between the winding end terminal C of the secondary winding n ₂₂ and the primary winding n ₂₁ when the switch element TR ₁₂ is turned on. The voltage at which the voltage goes across the capacitor C ₂₂ is at most low, and there is no problem with insulation.

With the above configuration, it is possible to prevent dielectric breakdown between the primary windings n ₁₁ and n ₂₁ and the secondary windings n ₁₂ and n ₂₂ of the pulse transformers PT ₁₁ and PT ₁₂ . As a result, pulse transformers PT ₁₁ and PT ₁₂
It is not necessary to thicken the insulating sheets IS ₁ and IS ₂ between the primary windings n ₁₁ and n ₂₁ and the secondary windings n ₁₂ and n ₂₂ . Therefore, it is possible to reduce the size and weight of the first and second pulse transformers PT ₁₁ and PT ₁₂ , and to prevent the occurrence of dielectric breakdown and improve the reliability.

A second embodiment of the present invention will be described with reference to FIGS. 3 and 4. This igniter IG ₂ for high pressure discharge lamp is
As shown in FIGS. (A) and (b), the pulse transformer PT ₁₁ ,
As the PT ₁₂ , the primary windings n ₁₁ and n ₂₁ are wound inside, and the secondary windings n ₁₂ and n ₂₂ are wound on the primary windings n ₁₁ and n ₂₁ via the insulating sheets IS ₁ and IS _2. , This pulse transformer PT ₁₁ , PT ₁₂
In the structure of FIG. 3, as shown in FIG. 3, of the winding start terminals B and D and the winding end terminals A and C of the secondary windings n ₁₂ and n ₂₂ , the winding start terminals B and D are the primary winding n ₁₁ , N ₂₁ are close to each other, so the winding start terminals B and D are connected to the output terminals a and b of the discharge lamp ballast BL which is the power supply side for lighting the high pressure discharge lamp DL, and the winding end terminals A and C are connected. Are connected to both electrodes of the high pressure discharge lamp DL, respectively.

Further, due to the voltage polarity, the primary windings n ₁₁ and n ₁₂ of the pulse transformers PT ₁₁ and PT ₁₂ are connected reversely to those in FIG.

The primary side circuits of the pulse transformers PT ₁₁ and PT ₁₂ are the same as those shown in FIG.

The configuration and operation effects of this embodiment other than the above are the same as those of the first embodiment.

A third embodiment of the present invention will be described with reference to FIG.
This high-pressure discharge lamp igniter is a pulse transformer PT ₁₁ ,
From the multilayer aligned winding structure shown in FIGS. 2 (a), (b) and FIGS. 4 (a), (b), the structure of PT ₁₂ is shown in FIG. 5 (a), (b). It has been changed to a split winding structure. With this pulse transformer PT ₁₁ and PT ₁₂ , bobbin
The winding area of BO ₁ and BO ₂ is divided into 4 parts by an insulating wall, the primary windings n ₁₁ and n ₂₁ are wound in one section on the right end, and the secondary winding is set in 3 sections on the left side.
n ₁₂ and n ₂₂ are split windings, and the winding start terminals are B and D
And the winding end terminals are A and C.

In the structure of FIGS. 5 (a) and 5 (b), the secondary windings n ₁₂ , n
_Since the winding start terminals B and D of ₂₂ have a small distance from the primary windings n ₁₁ and n ₂₁ and the winding end terminals A and C have a large distance from the primary windings n ₁₁ and n ₂₁ , C is a high voltage terminal connected to both electrodes of the high pressure discharge lamp DL, and a winding start terminal is a low voltage terminal connected to the output terminals a and b of the discharge lamp ballast BL. The circuit configuration when using the pulse transformers PT ₁₁ and PT ₁₂ having the structures of FIGS. 5A and 5B is the same as that of FIG.

The function and effect of this embodiment are similar to those of the first embodiment.

A fourth embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 6, the igniter IG ₄ for a high-pressure discharge lamp has the switch element TR ₁₂ shown in FIG.
The electric charge stored in the capacitors C ₂₁ and C ₂₂ by each switching element TR ₁₁ is discharged to the respective pulse transformers PT ₁₁ and PT ₁₂ through the primary windings n ₁₁ and n ₂₁ to generate a high voltage pulse voltage. It was done.

According to this embodiment, since the switch element TR ₁₂ composed of a triac or the like can be omitted, the circuit configuration can be simplified.

Of course, this concept can be applied to that of FIG.

A fifth embodiment of the present invention will be described with reference to FIG.
This high-pressure discharge lamp igniter is a pulse transformer PT ₁₁ ,
The waveforms of the high-voltage pulse voltages generated from the secondary windings n ₁₂ and n _{22 of} PT ₁₂ are made different, and other configurations are the same as those shown in FIGS. 1 and 2.

That is, for example pulses from the secondary winding ₁₂ of the transformer PT ₁₁ generates a high pressure pulse voltage wave height value as shown in Figure No. 7 (a), first from the secondary winding n ₂₂ of the pulse transformer PT ₁₂ As shown in FIG. 7B, a high pulse voltage with a wide pulse width and a large energy is generated if the peak value is low. FIG. 7 (c) shows a voltage waveform in which the high voltage pulse voltage of FIG. 7 (a) and the high voltage pulse voltage of FIG. 7 (b) are added and synthesized, and this voltage is applied to the high pressure discharge lamp DL.

In this case, in order to generate a large pulse voltage peak value from the secondary winding n ₁₂ of the pulse transformer PT ₁₁ may increase the turns ratio of the primary winding n ₁₁ and the secondary winding n ₁₂ of the pulse transformer PT ₁₁ Just set it. Further, in order to generate a wide pulse voltage from the secondary winding n ₂₂ of the pulse transformer PT ₁₂ ,
The capacitance of the capacitor C ₂₂ may be increased, or the inductance value of the primary winding n ₂₁ of the pulse transformer PT ₁₂ may be set to be high to reduce the resonance frequency due to the inductance and the capacitance.

Generally, in order to reliably and quickly start a high-pressure discharge lamp, a pulse voltage with a high peak value is first applied to both ends of the high-pressure discharge lamp, and first dielectric breakdown occurs between both electrodes of the high-pressure discharge lamp. Slightly discharge the high pressure discharge lamp.
After that, a wide pulse voltage with large energy is applied to the high-pressure discharge lamp. As a result, the enclosed gas in the tube of the high pressure discharge lamp is rapidly ionized and transferred to arc discharge, and the high pressure discharge lamp is quickly started.

In this embodiment, the starting performance of the high pressure discharge lamp DL is improved by setting the waveform of the high voltage pulse voltage applied to the high pressure discharge lamp DL as shown in FIG. 7 (c). Other effects are similar to those of the first embodiment.

Needless to say, the configuration of this embodiment can be applied to the embodiments of FIGS. 3 to 6.

〔The invention's effect〕

According to the igniter for a high pressure discharge lamp of the present invention, one of the winding start terminals and winding end terminals of the secondary windings of the first and second pulse transformers, whichever is closer to the primary winding, is used as the high pressure discharge lamp. Since it is connected to the power supply side to be lit and the winding start terminal and winding end terminal of each secondary winding, whichever is farther from the primary winding, is connected to the high pressure discharge lamp,
The winding start terminal and winding end terminal of each secondary winding of the first and second pulse transformers, whichever is closer to the primary winding, is the low-voltage terminal, and the winding start terminal and winding end of each secondary winding. Since one of the terminals that is farther from the primary winding can be the high-voltage terminal, it is possible to prevent dielectric breakdown between the primary winding and the secondary winding of the first and second pulse transformers, and to prevent the primary winding. It is not necessary to thicken the insulating layer between the wire and the secondary winding. Therefore, the first and second
It is possible to reduce the size and weight of the pulse transformer and improve the reliability by preventing the occurrence of dielectric breakdown.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an igniter for a high pressure discharge lamp according to the first embodiment of the present invention, and FIG.
FIG. 3 is a sectional view showing the structure of one pulse transformer, FIG. 3 is a circuit diagram showing an igniter for a high pressure discharge lamp according to an embodiment of the second embodiment of the present invention, and FIG. 4 is two pulse transformers in FIG. FIG. 5 is a sectional view showing the structure of two pulse transformers in the third embodiment of the present invention, and FIG. 6 is a high voltage discharge of the embodiment of the fourth embodiment of the present invention. FIG. 7 is a circuit diagram showing an igniter for electric lights, FIG. 7 is a waveform diagram showing a fifth embodiment of the present invention, FIG. 8 is a circuit diagram of a conventional high pressure discharge lamp lighting device, and FIG. 9 is a high voltage discharge device of FIG. A circuit diagram of a conventional igniter for a high-pressure discharge lamp used in an electric lamp lighting device,
FIG. 10 is a circuit diagram of another conventional igniter for a high pressure discharge lamp,
FIG. 11 is a circuit diagram of a part of FIG. 10, and FIG. 12 is a sectional view showing the structure of two pulse transformers used in the circuit of FIG. PT ₁₁ , PT ₁₂ … Pulse transformer, DL… High-pressure discharge lamp, IG
₁ ... Igniter for high-pressure discharge lamp, C ₁ ... Bypass capacitor, n ₁₁ , n ₂₁ ... Primary winding, n ₂₁ , n ₂₂ ... Secondary winding, A, C ...
Winding end terminals, B, D ... Winding start terminals

Claims (1)

[Claims] 1. Secondary windings of the first and second pulse transformers in a state where the secondary windings of the first and second pulse transformers for high voltage generation are dispersed on both electrode sides of the high-pressure discharge lamp. A igniter for a high-pressure discharge lamp in which a wire and the high-pressure discharge lamp are connected in series, wherein a primary winding of a winding start terminal and a winding end terminal of each secondary winding of the first and second pulse transformers The one with a shorter distance was connected to the power source side for lighting the high-pressure discharge lamp, and one of the winding start terminal and the winding end terminal of each of the secondary windings, which was farther from the primary winding, was connected to the high-pressure discharge lamp. An igniter for a high-pressure discharge lamp, which is characterized in that