JPH08180986A - Discharge lamp lighting device - Google Patents

Abstract

PURPOSE: To enable the stabilized high-frequency conversion by forming a constant current high-frequency power source of a rectifying and boosting direct current power source and a high-frequency converting unit, and raising the direct current voltage in relation to a commercial power source. CONSTITUTION: A rectifying and boosting direct current power source 1 of a constant current high-frequency power source A rectifies a commercial power source Vs , and converts it to the boosted direct current voltage Ddc . A high-frequency converting unit 2 converts the voltage Vdc to the high-frequency output. Consequently, since the voltage Vdc is boosted in relation to the voltage Vs , output of the converting unit 2 can be easily set high. Lowering of the voltage due to the inductance L at a concentrated constant, which is inserted so as to stabilize load circuits B1-B4, can be thereby absorbed, and the converting unit 2 can be stably operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge lamp lighting device in which a current supplied from a high frequency power source is received by a plurality of current transformers and each of the current transformers lights a discharge lamp.

[0002]

2. Description of the Related Art FIG. 16 shows a conventional example of an illumination system using a high frequency power supply and a current transformer (Actual development number: 59-46496).
No.). In the figure, B1, B2, and B3 are lighting fixtures, which are dispersed and installed at locations away from the power source. This lighting system includes a constant-current high-frequency power supply A that inputs a commercial power supply Vs and outputs a high-frequency constant current, and its output current I is one of a plurality of current transformers T1, T2, T3.
It is supplied to the next winding. Each current transformer T1, T2,
Fluorescent lamps FL1 and FL are provided on the secondary windings of T3, respectively.
2, a lighting load such as FL3 is connected. In Japanese Utility Model Application Laid-Open No. 59-46496, a constant-current high-frequency power source is not explicitly disclosed, but Japanese Patent Application No. 5-11
No. 3451 proposes an efficient power supply in a power supply device in which a current supplied from a high frequency power supply is received by a plurality of current transformers and a load is operated by each current transformer.

[0003]

The load circuit of the constant current high frequency power supply is composed of an inductance component and a stray capacitance due to the wiring W, a current transformer and a lighting load coupled thereto. However, when the load circuit is the equivalent circuit of FIG. 17, when the inductive impedance on the load side is L ₀ , the capacitive impedance is C ₀ , and the resistance of the lighting load is R ₀ ,
The vibration characteristic (no-load resonance frequency f ₀ ) of the load circuit before the lamp is lit (no load state) is given by Equation 1, and the vibration frequency f ₁ at the time of lighting is given by Equation 2.

[0004]

[Equation 1]

[0005]

[Equation 2]

At this time, the inductive impedance L ₀ on the load side is only the inductive impedance due to the wiring,
It changes depending on the wiring length. Also, the inductive impedance L
For example, when a parallel vinyl electric wire (φ2 mm) is used, ₀ is small at about 11.1 μH when the wiring length is 20 m (one way), and similarly, the capacitive impedance C ₀ is also small. Therefore, the unloaded resonance frequency f ₀ has a very high value.

Further, as a load circuit on the secondary winding side of the current transformer, as shown in FIG. 18, a capacitor C ₁₁ is added to both ends of the lamp for preheating the filament, and C ₁₁ and C ₁₂ are added to both ends of the filament. Is common. In this case, the load side capacitive impedance C ₀ becomes larger than the above value. Therefore, the no-load resonance frequency f ₀ becomes small. However, even in this case, the wiring length is 20 m, and C ₁₁ =
3900 pF, C ₁₂ = 0.1 μF, C ₁₃ = 0.1 μF,
When eight current transformers are connected, the unloaded resonance frequency f ₀ becomes a relatively high value of about 190 kHz in the measurement by experiment.

The vibration frequency f ₁ when the lamp load is a constant resistance of 330Ω is about 130 kHz.
Usually, before the lamp is started (no load state), the inverter is operated at an operating frequency higher than the no load resonance frequency f ₀ . This is because if the inverter is operated at an operating frequency lower than the no-load resonance frequency f ₀ , the inverter will be in the current phase advance mode operation and will give excessive stress to the switching element. The operating frequency is about 40 kHz to 15 kHz due to the loss of switching elements and electromagnetic noise.
It is selected to be about 0 kHz.

However, in the configuration of FIG. 16 or 18, the no-load resonance frequency f ₀ and the vibration frequency f ₁ at the time of lighting are f _1.
Becomes a high frequency, and in order to operate the inverter stably, it is necessary to set the operating frequency to about 200 kHz or higher when there is no load and about 130 kHz or higher when the lamp is on. Therefore, as shown in FIG. 19, it is conceivable to insert a lumped constant inductance L in the load circuit in series with the load circuit. The value of the inductance L of this lumped constant is preferably a value of f ₀ = 70 kHz to 100 kHz based on the above consideration. Now, in this case, due to the impedance effect of the inductance L, the output voltage of the constant current high frequency power supply is
It should be higher than when there is no inductance L.

[0010]

According to the present invention, in order to solve the above problems, as shown in FIG. 1, a commercial power supply Vs and a constant current high frequency power supply fed from the commercial power supply Vs are provided. , A lumped constant inductance L and a load circuit B1, B2, B3 inserted in series as a load of the constant current power supply.
In the discharge lamp lighting device having B4, the constant current high frequency power supply A is a rectification boost DC power supply 1 that rectifies the commercial power supply Vs and converts it into a boosted DC voltage Vdc, and a high frequency conversion that converts this DC power supply into a high frequency. It is characterized by having a part 2.

The high-frequency converter 2 may be a constant-current high-frequency converter 2a as shown in FIG. 2, or the rectified boost DC power supply 1 may be controlled to realize a constant-current operation. Alternatively, both the rectifying and boosting DC power supply 1 and the high frequency converter 2 may be controlled together. In short, all you need to do is
This is to boost the DC voltage Vdc input to the high frequency converter 2 with respect to the commercial power supply Vs.

[0012]

According to the present invention, by boosting the DC voltage Vdc input to the high frequency conversion unit 2 with respect to the commercial power supply Vs, the output of the high frequency conversion unit 2 can be easily set high and the load circuit can be stabilized. The high frequency converter 2 can absorb the voltage drop due to the inductance L of the lumped constant inserted for
Can operate stably.

[0013]

FIG. 3 is a first embodiment of the present invention. In this embodiment, a step-up chopper circuit 11 is used as a rectified step-up DC power source.
Is a full bridge inverter 21 as a high frequency converter.
Is equipped with a constant current high frequency power supply. FIG. 4 shows a specific circuit example. The commercial power supply Vs is a capacitor C
₁ , rectified by the full-wave rectifier DB through a noise filter circuit composed of the filter coil FC and the capacitor C ₂ . The rectified voltage is boosted and smoothed by a booster chopper circuit composed of a choke coil L ₁ , a switching element Q ₁ , a diode D ₁ and a capacitor C ₄ . The switching element Q ₁ is controlled by the chopper control unit 3. When the switching element Q ₁ is on, current flows through the switching element Q ₁ via a choke coil L _1, the energy is accumulated in the choke coil L _1. When the switching element Q ₁ is turned off, the energy stored in the choke coil L ₁ is charged in the capacitor C ₄ via the diode D ₁ . As a result, the boosted smooth DC voltage is obtained at the capacitor C ₄ . In this embodiment, the voltage across the capacitor C ₄ is detected by the resistors R ₁ and R ₂ and is input to the chopper control unit 3 so that the DC voltage is controlled to be constant. The chopper controller 3 uses a general-purpose switching power supply IC (for example, FA53 manufactured by Fuji Electric Co., Ltd.
31 or MC33261 manufactured by Motorola).

DC voltage Vd output from the boost chopper
c is a switching element Q₂ , Q₃, Q_Four , Q_Five Composed of
It becomes the power source of the full bridge type inverter. Fulb
The ridge type inverter switches each switch at the timing shown in FIG.
Touching element Q₂ , Q₃ , Q _Four , Q_Five Turns on and off
U For example, switching element Q₂ Is on, switch
Element Q₃ Off, switching element Q_Four Is off,
Touching element Q_Five When the capacitor is on, the capacitor C_Four High pressure
Side, switching element Q₂ , Lumped constant inductance
L, current transformers T1, T2, T3 between terminals X and Y
T4 (Fig. 1), switching element Q_Five , Capacitor C_Four 
Current flows through the low voltage side loop of the. Also, the switch
Holding element Q₂ Off, switching element Q₃ Is on,
Switching element Q_Four Is on, switching element Q_Five But
When off, capacitor C_Four High voltage side, switching
Element Q_Four , Current transformers T1, T2 between terminals X and Y
T3, T4 (Fig. 1), lumped constant inductance L, switch
Touching element Q₃ , Capacitor C_Four Loop on the low pressure side of
Current flows through. Switching element Q₂ , Q₃ , Q
_Four , Q_Five Is a high frequency of 40 kHz to 100 kHz, for example.
Working in waves. Current transformer T1, between terminals X and Y
Loop current in each primary winding of T2, T3, T4 (Fig. 1)
I flows, diode D on the secondary winding side₂ , D₃ Adjusted by
Shed This voltage is input to the current detector 5 and
A detection signal of the loop current is obtained. This detection signal is
It is input to the burner controller 4 and the loop current is made constant.
ing. In the inverter control unit 4, the switching element Q
₂ , Q₃ , Q_Four , Q_Five To generate the on / off signal of
For example, it is possible to control the ON time of the switching element.
At, constant current control is performed. Also, switching elements
Q₂ , Q₃ , Q_Four , Q_Five To control the operating frequency of
Therefore, constant current control may be performed.

FIG. 6 shows a second embodiment of the present invention. Implementation
In the example, a buck-boost chopper circuit is used as a rectified boost DC power supply.
12 is a full-bridge type inverter as a high frequency converter
21 is provided with a constant current high frequency power supply. See Figure 7.
A specific example of The commercial power supply Vs is a capacitor C
₁ , Filter coil FC, capacitor C₂ Consists of
Rectified by the full-wave rectifier DB through the noise filter circuit
Is done. The rectified DC voltage is applied to the switching element Q.
₆ , Inductor L₂ , Diode D_Four , Capacitor C_Four 
Boosted and smoothed by a step-up / down type chopper circuit.
Switching element Q ₆ Is the controller in the chopper control unit 3.
Will be Switching element Q₆ When is on,
Kuta L₂ Current flows through the inductor L₂ Energy
Ruge is accumulated. Switching element Q₆ Is off
Then inductor L₂ The energy stored in
Code D_Four Through the capacitor C_Four Will be charged. to this
Than capacitor C_Four Is a smoothed DC voltage boosted
Is obtained. In the present invention, the capacitor C_Four The voltage across
Resistance R₁ , R₂ Detected by and input to the chopper control unit 3.
However, the value of the DC voltage is controlled to be constant. Lift
The output (DC voltage) of the pressure chopper circuit is the same as above.
And the switching element Q₂ , Q₃ , Q_Four , Q_Five Composed of
It will be the power source for the full bridge inverter. Below,
The work is similar to the above explanation.

FIG. 8 is a circuit diagram of the third embodiment of the present invention.
It The voltage doubler rectifier circuit 13 is used as a rectifier boost DC power supply.
A full bridge type inverter 21 was used as the inverter.
It is a constant current high frequency power supply. Figure 9 shows a concrete example.
You. The commercial power supply Vs is a capacitor C₁ , Filter coil
FC, capacitor C₂ A noise filter circuit composed of
Through the diode D_Five Anode and die
De D₆ Is input to the cathode of the
_Five , C₆ Connected to the midpoint. Diode D_Five The Cassaw
The capacitor C_Five Diode D on the high voltage side of₆ Ano
The capacitor is C ₆ On the low voltage side (circuit ground) of
Each is connected. When the terminal a is at high potential, the terminal
a, diode D_Five , Capacitor C_Five , Loop of terminal b
An electric current flows in. When the terminal b is at high potential,
b, capacitor C₆ , Diode D₆ , Loop of terminal a
An electric current flows in. Capacitor C_Five , C₆Exchange between
A voltage twice as high as the power supply Vs is rectified. This voltage doubler rectification times
The DC voltage Vdc output from the line is the same as above.
Itching element Q₂ , Q₃ , Q_Four , Q_Five Consisting of
It will be the power source for the bridge inverter. The following operations are first
Is the same as the description above.

FIG. 10 is a circuit diagram of the fourth embodiment of the present invention.
It In this embodiment, a rectifier boost DC power source is a boost type
The upper circuit is a half bridge type
A constant current high frequency power source using the barter 22 is provided. quotient
Power supply Vs is a capacitor C ₁ , Filter coil FC,
Capacitor C₂ Via a noise filter circuit composed of
And is rectified by the full-wave rectifier DB. The rectified voltage is
Choke coil L₁ , Switching element Q₁ , Daio
De D₁ , Capacitor C_Four Booster chopper circuit composed of
Boosted and smoothed on the road. Switching element Q₁ Is
It is controlled by the control unit. Switching element Q₁ 
Is on, choke coil L₁ Current flows through
And choke coil L₁ Energy is stored in. S
Itching element Q₂ Is turned off, choke coil L
₁ The energy stored in the diode D₁ Through
Capacitor C_Four Will be charged. This allows the capacitor
C_Four, A boosted smooth DC voltage is obtained. Real
In the embodiment, the capacitor C_Four The voltage across both ends of the resistor R₁ , R₂ 
Detected by the DC voltage Vdc input to the chopper control unit.
The value of is controlled to be constant. Step-up chopper
The output of the circuit (DC voltage) is the switching element Q₇ , Q
₈ , Capacitor C₇ , C₈ Half bridge composed of
The power source for the inverter.

In the half-bridge type inverter, the switching elements Q ₇ and Q ₈ are turned on / off at the timing shown in FIG. For example, switching element Q ₇ is on,
When the switching element Q ₈ is off, the switching element Q ₇ , the inductor L, the current transformers T1 to T4 between the terminals X and Y (FIG. 1), the current transformer CT, and the capacitor C ₈ are connected from the high voltage side of the capacitor C ₄ . After that, the capacitor C ₄
The current flows in the loop to the low voltage side of. Further, when the switching element Q ₈ is on and the switching element Q ₇ is off, from the high voltage side of the capacitor C ₄ , the capacitor C ₇ ,
Current transformer CT, each current transformer T1 between terminals X and Y
~ T4 (Fig. 1), inductor L, switching element Q ₈
A current flows through the loop through the low voltage side of the capacitor C ₄ . The switching elements Q ₇ and Q ₈ are, for example, 40
It operates at a high frequency of kHz to 100 kHz. A loop current I flows through the primary winding of the current transformer CT, and 2
It is rectified by the diodes D ₂ and D ₃ on the side of the next winding. This voltage is input to the current detection unit 5 and a loop current detection signal is obtained. This signal is input to the inverter control unit 4 to make the loop current constant. The inverter control unit 4, and generates an on-off signal of the switching element Q _7, Q _8, as a constant current control is performed, for example, by controlling the operating frequency of the switching element Q _7, Q _8. It may control the on-time of the switching element Q _7, Q _8.

Here, the primary side voltage of the transformer T1 is V
i = (n ₁ / n ₂ ) × Va, where n _{1 is} the primary winding, n ₂ is the secondary winding, and Va is the lamp voltage during lighting.
Becomes To turn on the n lamps, the voltage Vxy between the terminals X and Y in FIG. 14 becomes Vxy = n × Vi. Assuming that the loop current is I and the high-frequency operating frequency is f ₁ , the voltage V of the lumped constant inductance L is V ₁ = 2πf ₁ × L
Becomes The output voltage of the half-bridge inverter is Vdc / 2, which is half the input DC voltage Vdc.
c = 2 × (Vxy + V ₁ ). Therefore, the DC voltage Vdc output from the step-up chopper is Vdc ≧ 2 × Vxy
It is necessary to

As another embodiment, a step-up chopper circuit may be used as the rectification step-up DC power source, and a monolithic inverter may be used as the high-frequency converter, and a step-up chopper circuit may be used as the rectification step-up DC power source. A push-pull type inverter may be used as the high frequency converter. Further, a combination of a step-up / down chopper circuit as a rectified step-up DC power source and a half-bridge type inverter, a single stone type inverter or a push-pull type inverter as a high frequency converter may be used. Further, a configuration in which a voltage doubler rectifier circuit as a rectified step-up DC power source and a half bridge type inverter, a single stone type inverter or a push-pull type inverter as a high frequency conversion unit may be used. In short, it is important to have a configuration in which the DC voltage to the high frequency converter is boosted and input to the commercial power source. However, the lumped-constant inductance L inserted in series with the load is indispensable, and as shown in FIG. 1, a plurality of current transformers receive the current supplied from the high-frequency power source, and the current transformers discharge the currents. It is necessary in the configuration to have a load circuit that lights the electric lamp.

Next, in the discharge lamp lighting device having the constant-current high-frequency power supply having the rectified step-up DC power supply and the high-frequency conversion unit as described above, from the time when the commercial power supply Vs is turned on to the time when the lamp as the lighting load is lit. Consider the operation sequence of. This is necessary for surely lighting the lamp which is the lighting load in the load circuit as shown in FIG. 1 and for stably operating the switching circuit constituting the constant current high frequency power supply.

FIG. 12 shows the first operation sequence. In the figure, (a) shows the timing of turning on the AC power supply Vs, (b) shows the timing of starting the operation of the inverter and the change of the operating frequency, and (c) shows the DC output from the chopper circuit. The change in voltage Vdc is shown. According to this operation sequence, the inverter is operated immediately after the AC power supply Vs is turned on, and the operation frequency f of the inverter at this time is higher than the load vibration frequency f ₀ (including the lumped inductance L) before the lamp is lit. Use a large value. After that, the step-up (or step-up / down) chopper circuit is operated to boost the input voltage of the inverter to a desired DC voltage. After that, reduce the frequency of the inverter,
Increase the loop current to turn on the lamp. According to this operation sequence, the input voltage of the inverter can be lowered in the initial operation of the inverter, and the stress applied to the inverter immediately after starting can be reduced. In addition, after the inverter shifts to a stable operation, a sufficient DC voltage is applied to the inverter, and the lamp can be started smoothly and reliably.

FIG. 13 shows the second operation sequence. In the figure, (a) shows the timing of turning on the AC power supply Vs, (b) shows the timing of starting the operation of the inverter and the change of the operating frequency, and (c) shows the DC output from the chopper circuit. The change in voltage Vdc is shown. According to this operation sequence, after the AC power supply Vs is turned on, the step-up (or step-up / down) chopper is operated to boost the input voltage of the inverter to a desired DC voltage. afterwards,
Operate the inverter. The operating frequency of the inverter at this time is set to a value higher than the load vibration frequency f ₀ (including the lumped constant inductance L) before the lamp is lit.
After that, the frequency of the inverter is lowered and the loop current is increased to turn on the lamp. According to this operation sequence, a stable desired DC voltage is already applied at the start of the operation of the inverter, the preceding preheating current to the lamp does not change due to the fluctuation of the AC power supply Vs, and the lamp starts and lights up. The lamp can be started smoothly and reliably in the process.

FIG. 14 shows a third operation sequence. In the figure, (a) shows the timing of turning on the AC power supply Vs, (b) shows the timing of starting the operation of the inverter and the change of the operating frequency, and (c) shows the DC output from the chopper circuit. The change in voltage Vdc is shown. According to this operation sequence, the inverter is operated immediately after the AC power supply Vs is turned on. The operating frequency of the inverter at this time is set to a value higher than the load vibration frequency f ₀ (including the lumped constant inductance L) before the lamp is lit. Then, the frequency of the inverter is lowered to increase the loop current. After that, a step-up (or step-up / down) chopper is operated to boost the input voltage of the inverter to a desired DC voltage. Some lamps start to light up partly as the operating frequency of the inverter decreases. After that, the loop current is increased by the step-up (step-up / step-down) chopper operation to turn on all the lamps. According to this operation sequence, there are two operations, that is, starting by controlling the frequency of the inverter and starting the lamp by boosting the voltage in the chopper operation.
It has one starting process, and can illuminate the lamp smoothly and surely.

FIG. 15 shows a fourth operation sequence. In the figure, (a) shows the timing of turning on the AC power supply Vs, (b) shows the timing of starting the operation of the inverter and the change of the operating frequency, and (c) shows the DC output from the chopper circuit. The change in voltage Vdc is shown. According to this operation sequence, the inverter is operated immediately after the AC power supply Vs is turned on. At this time, the operating frequency of the inverter is set to a value higher than the load vibration frequency f ₀ (including the lumped constant inductance L) before the lamp is lit.
Then, the frequency of the inverter is lowered to increase the loop current. After that, a step-up (or step-up / down) chopper is operated to boost the input voltage of the inverter to a desired DC voltage. Further, thereafter, the loop current is increased by lowering the operating frequency of the inverter. According to this operation sequence, there are three starting processes of starting by controlling the frequency of the inverter, starting the lamp by boosting the voltage in the chopper operation, and then starting by further lowering the inverter frequency. You can do it. According to this starting sequence,
The lighting load of a large number of lights can be smoothly and reliably started and lit, and the stress of a constant current high frequency power source such as an inverter can be reduced.

[0026]

According to the present invention, the current supplied from the constant-current high-frequency power source is received by the lumped-constant inductance and the plurality of current transformers, and the discharge lamp is lit by each current transformer. In the discharge lamp lighting device described above, the constant-current high-frequency power source is a rectifying step-up DC circuit such as a step-up chopper circuit, a step-up / down chopper circuit or a voltage doubler rectifier circuit that rectifies a commercial power source and converts it into a boosted DC voltage. Since it has a power supply and a high-frequency conversion unit that converts the output voltage of this DC power supply into a high frequency, the output voltage of the high-frequency conversion unit can be easily set high by the boosting action of the rectification boost DC power supply. It is possible to absorb the voltage drop due to the inductance of the lumped constant inserted to stabilize the load circuit, and to operate the high-frequency converter stably. There is an effect that kill.

Further, according to the invention of claims 5 to 8, in a discharge lamp lighting device by a constant current high frequency power source, which is a combination of a rectification step-up DC power source and a high frequency converter, the rectification step-up DC power source and high frequency after the AC power source is turned on. By providing a start control unit that controls the operation start timing of the conversion unit or the operation frequency of the high frequency conversion unit according to a predetermined start sequence, the lighting load of multiple lights can be started and turned on smoothly and reliably, and the high frequency conversion unit is also provided. It is possible to reduce the stress of the circuit that constitutes the constant-current high-frequency power source.

[Brief description of drawings]

FIG. 1 is a block circuit diagram showing a basic configuration of the present invention.

FIG. 2 is a block circuit diagram showing another basic configuration of the present invention.

FIG. 3 is a block circuit diagram of a first embodiment of the present invention.

FIG. 4 is a specific circuit diagram of the first embodiment of the present invention.

FIG. 5 is an operation explanatory diagram of the inverter circuit used in the first embodiment of the present invention.

FIG. 6 is a block circuit diagram of a second embodiment of the present invention.

FIG. 7 is a detailed circuit diagram of the second embodiment of the present invention.

FIG. 8 is a block circuit diagram of a third embodiment of the present invention.

FIG. 9 is a detailed circuit diagram of the third embodiment of the present invention.

FIG. 10 is a detailed circuit diagram of the fourth embodiment of the present invention.

FIG. 11 is an operation explanatory diagram of an inverter circuit used in a fourth embodiment of the present invention.

FIG. 12 is an operation explanatory diagram showing a startup control sequence of the invention described in claim 5;

FIG. 13 is an operation explanatory diagram showing a startup control sequence of the invention described in claim 6;

FIG. 14 is an operation explanatory diagram showing a startup control sequence of the invention described in claim 7;

FIG. 15 is an operation explanatory view showing a startup control sequence of the invention described in claim 8;

FIG. 16 is a circuit diagram of a first conventional example.

FIG. 17 is an equivalent circuit diagram of a load circuit in the first conventional example.

FIG. 18 is a circuit diagram of a second conventional example.

FIG. 19 is a circuit diagram of a third conventional example.

[Explanation of symbols]

 1 Rectification boost DC power supply 2 High frequency converter A Constant current high frequency power supply L Lumped constant inductance

Claims (8)

[Claims] 1. A commercial power supply, a constant-current high-frequency power supply fed from this commercial power supply, and a plurality of current transformers having primary windings connected in series to the output of the constant-current high-frequency power supply,
A discharge lamp lighting device comprising a discharge lamp connected to the secondary winding side of each current transformer, and a lumped constant inductance connected in series to the output of the constant current high frequency power supply,
The constant-current high-frequency power supply includes a rectifying and boosting DC power supply that rectifies a commercial power supply and converts it into a boosted DC voltage, and a high-frequency conversion unit that converts the output voltage of the DC power supply into a high-frequency power discharge lamp. Lighting device. 2. The discharge lamp lighting device according to claim 1, wherein the rectified step-up DC power source is a step-up chopper. 3. The discharge lamp lighting device according to claim 1, wherein the rectified boost DC power supply is a step-up / down chopper. 4. The discharge lamp lighting device according to claim 1, wherein the rectified step-up DC power source is a voltage doubler rectifier circuit. 5. After the commercial power supply is turned on, the high frequency converter is operated at a frequency higher than the load vibration frequency including the lumped inductance before the discharge lamp is turned on, and then the rectified step-up DC power supply is operated to obtain a desired voltage. The starting control part which raises the input voltage of a high frequency conversion part to a DC voltage, and then reduces the operating frequency of a high frequency conversion part, increases an output constant current, and lights a discharge lamp is provided. The discharge lamp lighting device described. 6. A load vibration including an inductance of a lumped constant before the discharge lamp is lit, after operating the rectification step-up DC power source after turning on the commercial power source to boost the input voltage of the high frequency converter to a predetermined DC voltage. The starting control unit for operating the high-frequency conversion unit at a frequency higher than the frequency, and thereafter lowering the operating frequency of the high-frequency conversion unit and increasing the output constant current to turn on the discharge lamp is provided. The discharge lamp lighting device described. 7. After the commercial power supply is turned on, the high frequency converter is operated at a frequency higher than the load vibration frequency including the lumped inductance before lighting of the discharge lamp, and then the operating frequency of the high frequency converter is lowered. After increasing the output constant current, the rectification boost DC power supply is operated to increase the output constant current by boosting the input voltage of the high frequency converter to a desired DC voltage, and a starting control unit for lighting the discharge lamp is provided. The discharge lamp lighting device according to claim 1, further comprising: 8. After the commercial power supply is turned on, the high frequency converter is operated at a frequency higher than the load vibration frequency including the lumped inductance before the discharge lamp is turned on, and then the operating frequency of the high frequency converter is lowered. Increase the output constant current, and then operate the rectification boost DC power supply to boost the input voltage of the high frequency converter to the desired DC voltage to increase the output constant current and enable lighting of some discharge lamps. The discharge lamp lighting device according to claim 1, further comprising a starting control unit that increases the output constant current to light all the discharge lamps by lowering the operating frequency of the high frequency converter.