JPH08273866A - Power supply unit, high pressure discharge lamp lighting device and lighting system - Google Patents

Abstract

PURPOSE: To quicken build up of a light flux, make the light flux to a constant moving state constant, and shorten the time to a constant moving state, with simple constitution. CONSTITUTION: Electric power is supplied to a high pressure discharge lamp 15 through a DC conversion circuit 11, a chopper 12, and a smoothing filter 13. Detecting voltage Sc is higher than detecting voltage Sb immediately after lighting, a diode D11 becomes conductive, and large electric power is supplied to the high pressure discharge lamp 15 by control of a control part 18 corresponding to the synthetic detecting voltage Sc. The high pressure discharge lamp 15 is warmed, the synthetic detecting voltage Sc drops with increase in lamp voltage (detecting voltage Sb), and the control part 18 controls so that electric power supplying to the high pressure discharge lamp 15 is decreased according to increase in lamp voltage. When the high pressure discharge lamp 15 approaches a stable lighting state, the detecting voltage Sb becomes higher than the detecting voltage Sa, the diode 11 becomes non-conductive, and the control part 18 controls based on the the detecting voltage Sa so that electric power is supplied so as to operate the high pressure discharge lamp in a constant moving state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for controlling electric power supplied to a high pressure discharge lamp, a high pressure discharge lamp lighting device and a lighting device.

[0002]

2. Description of the Related Art Conventionally, in a lighting device for lighting a high pressure discharge lamp by using a switching regulator, constant power control for maintaining a stable lighting state of the high pressure discharge lamp (hereinafter referred to as a constant operation state) is performed. .

FIG. 6 is a block diagram showing a configuration example of a conventional high pressure discharge lamp lighting device for performing such constant power control. In FIG. 6, this high pressure discharge lamp lighting device converts an alternating current (AC) such as a commercial power supply into a direct current by a direct current conversion circuit 1 including a power transformer, a rectifier and a smoothing circuit. This direct current
A pulsating current is derived by stepping up or stepping down by a chopper 2 in which a field effect transistor (FET) or the like performs a switching operation. This pulsating flow is smoothed by a smoothing filter composed of a diode D, a choke coil L and a capacitor C, and is supplied to the high pressure discharge lamp 4 as it is through the starting circuit 3.

In this case, a high-voltage pulse is applied from the starting circuit 3 to the high-pressure discharge lamp 4 by turning on a start switch (not shown) at the time of starting, but after the lighting, a constant power state is maintained by the control unit 5 in order to maintain a constant operation state. Control is performed, and the power supply is narrowed (reduced) before and after this constant operation state. In this constant power control, the output voltage from the smoothing filter is set to the resistors R1 and R.
The control unit 5 controls the chopper 2 to perform PW with a value obtained by adding the divided voltage divided by 2 and the voltage drop of the resistor R3 (corresponding to the flowing current of the high pressure discharge lamp 4) (pseudo method for multiplication).
M (Pulse wide modulation) is controlled to set the constant motion state.

FIG. 7 is a block diagram showing another example of the configuration of a conventional high pressure discharge lamp lighting device which performs such constant power control. In FIG. 7, this high pressure discharge lamp lighting device is shown in FIG.
Although the configuration and operation are the same as those of the above, the power detection for constant power control is performed on the input side of the chopper 2. In this power detection, the divided voltage is obtained by the resistors R4 and R5,
The voltage drop of the resistor R6 is added and the substantially constant power is controlled based on the voltage value.

In the high pressure discharge lamp 4 in such a high pressure discharge lamp lighting device, in the metal halide lamp in which metal vapor is the main light source, the metal of the light emitting body adheres to the tube wall in a solid state while the light is off. There is. Then, after the engine is started, it is heated by the arc discharge by the enclosed starting gas, and further, the enclosed metal is vaporized to be in a highly efficient light emitting state by the metal.
In such light emission, the power supplied immediately after the high-pressure lamp is started is low and metal evaporation is delayed, so that the time required to reach a predetermined light emission amount is delayed. Depending on the type of high-pressure discharge lamp, the time required to rise to a predetermined amount of light emission depends on the type of high-pressure discharge lamp, but even a small high-pressure discharge lamp may take, for example, one minute or longer. Immediately after turning on, it becomes dark.

In the control in this case, it is possible to suppress the fluctuation of the electric power applied to the high-pressure discharge lamp 4 when the detection voltage input to the control unit 5 is high, and to suppress the high-voltage discharge lamp when the detection voltage is low. 4 overcurrent can be limited. in this way,
This control is intended to improve startability and efficiency when a thin electrode is used in order to speed up the start-up (starting) of lighting.

In order to accelerate the rise of the luminous flux immediately after starting, it is known to fill the high pressure discharge lamp with a starting gas at high pressure. This high-pressure encapsulation reduces the stress on the electrodes of the high-pressure discharge lamp due to the high resistance value of the high-pressure gas, even when supplying more than the rated power immediately after start-up, and keeps the luminous flux rising with the thin electrodes used. It can be hastened.

[0009]

However, in the above-described conventional high pressure discharge lamp lighting device, since the evaporation of metal inside the discharge lamp is slow, it takes a long time to reach a steady state in which the lamp is stably lit. That is, there is a drawback that the light emission becomes dark at the time of starting.

Further, when the high pressure discharge lamp in which the starting gas is sealed at a high pressure is used as the conventional discharge lamp lighting device shown in FIGS. 6 and 7, the electric power at the time of starting is insufficient, so that the high pressure gas is consumed. Therefore, the electrode cannot be heated sufficiently. In this case, there is a drawback that starting is difficult.

An example using a microcomputer for improving such a defect can be considered. In this configuration, a microcomputer is used as the control circuit 5, and the inverter and the like are controlled so as to shorten the time until the light flux rises and the constant operation state. In this case, a control program for the same is required. However, there is a drawback that the device becomes complicated and the device scale and the signal processing scale increase.

The present invention solves the above-mentioned drawbacks of the prior art. With a simple structure, the luminous flux rises quickly, and the luminous flux (light emission amount) is constant until a steady state of stable lighting. It is an object of the present invention to provide a power supply device, a high-pressure discharge lamp lighting device, and a lighting device that can be shortened and can reduce the time to a constant operation state after starting.

[0013]

In order to achieve the above object, a power supply device according to claim 1 is a control power output means for controlling DC or AC power and outputting the power to a high pressure discharge lamp, and a control power output. Input side detecting means for detecting the input side voltage value of the voltage input to the means, output side detecting means for detecting the output side voltage value of the output voltage from the control power output means to the high pressure discharge lamp, and the input side voltage value Based on the output side voltage value, the output side detecting means outputs a large amount of power when the lamp voltage immediately after the high pressure discharge lamp is started is low, and the high voltage discharge lamp is warmed to increase the lamp voltage, and It is a structure provided with a control means for performing control to reduce.

According to another aspect of the power supply device of the present invention, the control means comprises:
The output power of the control power output means is controlled by a comparator that compares the output voltage value with a predetermined reference value and outputs a comparison value signal of the difference value, and a pulse width modulation signal based on this comparison value signal. And a pulse width modulation signal generation circuit for

According to another aspect of the power supply device of the present invention, as the input side detecting means and the output side detecting means, a series-connected resistor for obtaining a divided voltage and a resistor for detecting a flowing current as a drop voltage are used. The configuration is characterized by.

According to another aspect of the power supply device of the present invention, the connection point of the series-connected resistor in the input side detection means and the drop voltage generating end of the resistor are connected to each other, and the divided voltage in the series-connected resistor and the resistor The control means controls the output power by the control power output means based on the voltage of the added value at the time of stable lighting of the high pressure discharge lamp by adding the dropped voltage.

According to another aspect of the power supply device of the present invention, a diode is connected between the connection point of the series connection resistor of the input side detection means and the connection point of the series connection resistor of the output side detection means, and the voltage on the input side is connected. When the value is larger than the voltage value on the output side, the diode conducts, and the control means controls the control power output means with the added value of the divided voltage and the voltage drop of the resistor when the series-connected resistors are connected in parallel. Then, a large amount of power is supplied after the high pressure discharge lamp is started, or the diode becomes non-conductive when the output side voltage value is larger than the input side voltage value, and the control means releases the high voltage only by the input side voltage value. The configuration is characterized in that power lower than the output power in a region where the lamp voltage is low immediately after the start of the lamp is supplied.

A high pressure discharge lamp lighting device according to a sixth aspect of the present invention is a high voltage discharge device in which the power source device according to the first, second, third, fourth or fifth aspect of the present invention and at least mercury that is turned on by the output voltage of the power source device are enclosed. This is a configuration including an electric light.

In the high pressure discharge lamp lighting device according to the seventh aspect, a metal halide lamp in which xenon gas and a metal halogen compound are sealed at high pressure is used as the high pressure discharge lamp.

An illumination device according to claim 8 is the illumination device according to claim 6.
Alternatively, the high pressure discharge lamp lighting device according to the seventh aspect is configured to include a light control unit that reflects and / or transmits light emitted from the high pressure discharge lamp and emits the light to the outside.

According to a ninth aspect of the present invention, there is provided a lighting device as the light control means, which is provided with a light emission color changing means for transmitting light emitted from a high pressure discharge lamp and changing a light emission color.

[0022]

In the power supply device according to claims 1, 2, 3 and 4 and the high pressure discharge lamp lighting device according to claims 6 and 7 having such a structure, when the detected voltage indicating the input side voltage value is larger than the reference value. Large power is supplied when the lamp voltage is low immediately after the high-pressure discharge lamp is started (when the output voltage value is low).
Further, the high-voltage discharge lamp is warmed by this power supply to raise the lamp voltage, the supplied power is reduced, and the rated power for the stop is supplied by PWM control.

In this case, with a relatively simple structure, the rising of the luminous flux at the start of the discharge lamp is accelerated, and the luminous flux up to the constant operating state is made constant. Furthermore, the time to the constant operation state after starting is shortened.

According to another aspect of the power supply device of the present invention, when the input side voltage value is larger than the output side voltage value (when the output side power value is low), the diode conducts, and the series connection resistors are connected in parallel. A large amount of electric power is supplied by controlling the added value of the divided voltage and the voltage drop of the resistor, and the supplied electric power is reduced as the lamp voltage rises. Further, the lamp voltage rises and the diode becomes non-conductive, and power control is performed only by the input side power value to supply a predetermined (constant operation state) small power. Therefore, the detection of the input side voltage value and the output side voltage value is performed only by the resistor and the diode.

In the power supply device according to the eighth and ninth aspects, the light emitted from the discharge lamp is reflected and / or transmitted and radiated outward, and the light emitted from the discharge lamp is transmitted and the emission color is changed. It is changing. In this case, with a relatively simple configuration,
The rising of the luminous flux at the time of start-up becomes faster, and the luminous flux up to the constant moving state becomes constant. Furthermore, the time until the constant operation state after starting is shortened, and the desired light emission direction,
The illumination is performed with the emission color.

[0026]

Embodiments of the power supply device, the high pressure discharge lamp lighting device and the lighting device of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of a high pressure discharge lamp lighting device of the present invention. In FIG. 1, in this example, an alternating current (AC) such as a commercial power source is converted into a direct current by a voltage doubler rectifier and a smoothing circuit, and the direct current is converted into a direct current circuit 1 which outputs the direct current.
1, a chopper 12 that outputs a pulsating flow obtained by switching driving (stepping down) the direct current from the DC converting circuit 11, and a smoothing filter 13 that smoothes the pulsating flow from the chopper 12. This smoothing filter 13 is a diode D,
It is composed of a choke coil L and a capacitor C. Further, the chopper 12 and the smoothing filter 13 constitute a control power output means.

Further, at the time of starting, a starting circuit 14 for outputting a high voltage pulse by turning on a starting switch (not shown) or the like.
And a high-pressure discharge lamp 15 that is started by a high-voltage pulse from the starting circuit 14 and that is lit by the power supplied from the smoothing filter 13, and the input side voltage is a divided voltage in resistors R10 and R11 and a flowing current. Is added to the voltage dropped by the resistor R12 (corresponding to the flowing current of the high-pressure discharge lamp 15) to output a detection voltage Sa that corresponds to the original detected power value in a pseudo manner. (Detection means) 16 is provided. Here, as the high-pressure discharge lamp 15, the starting gas,
For example, a high pressure discharge lamp filled with xenon (Xe) gas at a high pressure of 5 atm is used. The resistor R12 uses a small resistance value and does not particularly affect the divided voltage of the resistors R10 and R11. The same applies to the following configurations.

Further, the voltage from the smoothing filter 13 is a divided voltage in the resistors R13 and R14, and the flowing current is the resistor R.
The output side detection unit (output side detection means) 17 that adds the voltage dropped at 12 and outputs the detection voltage Sb that corresponds to the detected power value in a pseudo manner, and the resistor R1 of the input side detection unit 16.
0, R11 connection point and resistor R1 of output side detector 17
A diode D11 having an anode and a cathode connected to the connection point of R3 and R14, and a detection voltage Sa of the input side detection unit 16
And a control section (control means) 18 for driving the chopper 12 from the combined detection voltage Sc of the detection voltage Sb of the output side detection section 17 through the diode D to control the electric power.

FIG. 2 is a block diagram showing a configuration example of the chopper 12 and the control unit 18. In FIG. 2, the chopper 1
2 is a field effect transistor (F
ET) Q1 is used.

The controller 18 compares the combined detection voltage Sc with a predetermined reference voltage VE and outputs a comparison value voltage of that value, and a comparator 20 corresponding to the comparison value voltage from the comparator 20. A PWM signal generation circuit (pulse width modulation signal generation circuit) 21 for generating and outputting a PWM signal, and this PW
And a drive circuit 22 for generating and outputting the PWM signal from the M signal generation circuit 21 into a signal for driving the gate of the FET Q1 of the chopper 12.

Next, the operation of this embodiment will be described. 1 and 2, alternating current (AC) is converted into direct current by the direct current conversion circuit 11. Under the control of the control unit 18, the chopper 12 generates the pulsating current and outputs the direct current. This pulsating flow is smoothed by the diode D, the choke coil L and the capacitor C of the smoothing filter 13 and supplied to the high pressure discharge lamp 15 through the starting circuit 14.

At the time of starting, the starting circuit 14 outputs a high-voltage pulse to the high-pressure discharge lamp 15 by turning on a start switch (not shown) to start lighting, and the high-voltage discharge lamp 15 is warmed to stabilize the lamp voltage. To maintain the state,
Constant power control is performed by the control unit 18.

In addition to the constant power control, sufficient power is supplied to the high pressure discharge lamp 15 at the time of starting to speed up the rising of the luminous flux to make the amount of light emission up to a constant operating state constant, and
Power control is performed to reduce the time to the steady state.

This control will be described below. FIG.
FIG. 4 is a diagram for explaining a control state of supplied power in this operation. 1 to 3, the high pressure discharge lamp 15
The low power is supplied from the smoothing filter 13 immediately after lighting, and the detection voltage Sb at the output side detection unit 17 is lower than the detection voltage Sa at the input side detection unit 16. Therefore, the detection voltage Sa flows out from the diode D11. Due to the conduction of the diode D11, the resistors R10 and R11 of the input side detection unit 16 and the resistor R1 of the output side detection unit 17 are connected.
3, R14 are connected in parallel, and a combined detection voltage Sc obtained by combining the detection voltages Sa and Sb in the case of parallel connection is input to the control unit 18.

In the control unit 18, the comparison value voltage corresponding to the high-voltage combined detection voltage Sc input to the comparator 20 is set to P.
It is output to the WM signal generation circuit 21. The PWM signal generation circuit 21 outputs a PWM signal according to this comparison value voltage. This PWM signal is generated by the drive circuit 22 as a drive signal and sent to the gate of the FET Q1 of the chopper 12. Therefore,
As shown in the lamp voltage vs. supply voltage characteristic (1) in FIG. 3, a large amount of power (approximately 300%) is rapidly supplied to the high pressure discharge lamp 15 with respect to the rated supply power of 100% I.

By supplying this large electric power, xenon (X
e) Even in the high-pressure discharge lamp 15 in which gas is sealed at a high pressure of 5 atm, the luminous flux rises quickly. Therefore, even when the high pressure discharge lamp 15 in which the starting gas is sealed at a high pressure is used as the conventional discharge lamp lighting device shown in FIGS. The electrodes are heated. The luminous flux rises quickly and reliably.

When this high power is supplied from the smoothing filter 13, the high-pressure discharge lamp 15 warms up, and as shown in the lamp voltage vs. luminous flux characteristic (2) in FIG. (Detection voltage Sb) also rises. As the lamp voltage increases, the combined detection voltage Sc decreases,
The comparison value voltage corresponding to the combined detection voltage Sc is output to the PWM signal generation circuit 21. PWM signal generation circuit 21
However, the drive circuit 22 outputs the PWM signal corresponding to the comparison value voltage.
Is generated into a drive signal and sent to the gate of the FET Q1 of the chopper 12. Therefore, the supply power smoothly decreases as shown in the lamp voltage vs. supply power characteristic (1) in FIG.

This reduction of the power supply is controlled so that the luminous flux from the rising of the luminous flux to the stable lighting state is constant, as shown in the lamp voltage vs. luminous flux characteristic (2) in FIG. When the high pressure discharge lamp lighting device is used for lighting, stable lighting with little change can be performed.

When the high-pressure discharge lamp 15 is in a stable lighting state and the detection voltage Sb becomes higher than the detection voltage Sa, the diode D11 becomes non-conductive, and only the detection voltage Sa at the input side detection unit 16 is combined. The detected voltage Sc is input to the comparator 20 of the controller 18. In the comparator 20, the combined detection voltage Sc is compared with the reference voltage VE preset in the comparator 20, and the comparison value voltage of the difference with the reference voltage VE is output to the PWM signal generation circuit 21. The PWM signal generation circuit 21 generates a PWM signal according to the comparison value voltage as a drive signal by the drive circuit 22, and the FETQ of the chopper 12
The power supply control is performed in a constant operation state in which the high-pressure discharge lamp 15 is stably turned on.

Next, an illuminating device using the high pressure discharge lamp lighting device shown in this embodiment will be described. FIG. 4 is a circuit diagram showing a main configuration when the high pressure discharge lamp lighting device according to the embodiment is used as a lighting device. In FIG. 4, this lighting device has a reflector plate 40 arranged in the vicinity of the high pressure discharge lamp 15 in the high pressure discharge lamp lighting device shown in FIGS. For example, the reflection plate 40 is arranged on the back side of the high-pressure discharge lamp 15, and the light emitted from the high-pressure discharge lamp 15 is condensed and emitted forward. Further, a reflection plate 40 is arranged on the side of the high-pressure discharge lamp 15 so that the emitted light of the high-pressure discharge lamp 15 is laterally condensed and applied. Furthermore, a reflector 40 is provided in front of the high pressure discharge lamp 15.
Indirect lighting is performed by arranging and reflecting.

The transparent member 4 is provided in front of the high pressure discharge lamp 15.
1 is provided. The light transmission L from the high-pressure discharge lamp 15 is led out in a predetermined direction by the transmissive member 41, or the transmissive member 41 is colored to change the color of the light emission L.

Although the high-pressure discharge lamp lighting device shown in FIGS. 1 to 3 is equipped with the high-pressure discharge lamp 15, the power supply device may not be equipped with the high-pressure discharge lamp 15.

FIG. 5 is a block diagram showing the configuration when the high pressure discharge lamp lighting device shown in the embodiment is used as a power supply device. Figure 5
In, input terminals T1 and T2 (for example, AC outlets) connected to an AC power source with a cable and an output terminal T
3, T4 (for example, a socket) is provided.

This power supply device connects the input terminals T1 and T2 to the AC power supply with a cable or the like when installed on the spot where lighting is performed, and further, the high pressure discharge lamp 15 is connected to the output terminals T3 and T4.
Connect. When it is used as a lighting device at the same time, the structure shown in FIG.
The desired illumination is performed by arranging the reflection plate 40 and the transmission member 41 shown in FIG. Here, the reflection plate 40 and the transmissive member 41 constitute a light control unit, and the transmissive member 41 constitutes an emission color changing unit.

It should be noted that the chopper 12 may be used for boosting regardless of whether it is for stepping down. Further, any other configuration of inverter may be used. Further, although the high-pressure discharge lamp 15 is used in this embodiment, the present invention can be applied to the case where a high-pressure discharge lamp is not used. Furthermore, although the description has been given using the high pressure discharge lamp 15 that is lit by direct current, a discharge lamp that is lit by alternating current may be used. In this case, an inverter or the like that supplies an alternating current applied to the discharge lamp 15 is PWM-controlled to control the supply of large constant power up to the constant operation state.

[0046]

As is apparent from the above description, according to the power supply device of claims 1, 2, 3 and 4 and the high pressure discharge lamp lighting device of claims 6 and 7, the high pressure discharge lamp is As the temperature rises and the lamp voltage rises, control is performed to reduce the power supply. When the stable lighting state is reached, the power control in the constant operation state is performed, so that the rising of the luminous flux at the start of the high-pressure discharge lamp is accelerated, and the luminous flux up to the constant operation state is made constant. Further, there is an effect that it is possible to shorten the time until the constant operation state after the start.

According to the sixth aspect of the power supply device, when the voltage value on the output side is low, the diode conducts to supply a large amount of power, and a low power is supplied as the lamp voltage rises. The detection of the side power value and the output side power value is performed only by the resistor and the diode, which has the effect of simplifying the configuration.

According to the power supply device of claims 9 and 10,
The light emitted from the discharge lamp is reflected and / or transmitted and emitted outward, and the light emitted from the discharge lamp is transmitted and the emission color is changed. , The light flux to the constant motion state is constant, and the time to the constant motion state after starting is shortened,
This has the effect of enabling illumination with a desired light emitting direction and light emitting color.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a high pressure discharge lamp lighting device of the present invention.

FIG. 2 is a block diagram showing a detailed configuration example of a chopper and a control unit shown in FIG.

FIG. 3 is a diagram for explaining a control state of power supply in the operation of the embodiment.

FIG. 4 is a circuit diagram showing a configuration of a main part when the high pressure discharge lamp lighting device shown in the embodiment is used as a lighting device.

FIG. 5 is a block diagram showing a configuration when the high pressure discharge lamp lighting device shown in the embodiment is used as a power supply device.

FIG. 6 is a block diagram showing a configuration example of a conventional high pressure discharge lamp lighting device.

FIG. 7 is a block diagram showing another configuration example of a conventional high pressure discharge lamp lighting device.

[Explanation of symbols]

 1, 11 DC conversion circuit 2, 12 Chopper 3, 14 Starting circuit 13 Smoothing filter 15 High pressure discharge lamp 16 Input side detection unit 17 Output side detection unit 18 Control unit 20 Comparator 21 PWM signal generation circuit 40 Reflector 41 Transmissive member D11 Diodes R10 to R14 resistors

Claims (9)

[Claims] 1. Control power output means for controlling direct current or alternating current power to output to a high pressure discharge lamp; input side detection means for detecting an input side voltage value of a voltage input to the control power output means; Output-side detection means for detecting an output-side voltage value of the output voltage from the control power output means to the high-pressure discharge lamp; based on the input-side voltage value and the output-side voltage value, immediately after the start of the high-pressure discharge lamp When the lamp voltage is low, the output-side detecting means outputs a large amount of electric power, and the high-pressure discharge lamp warms to increase the lamp voltage, and at the same time, a control means for controlling the electric power is provided. Characteristic power supply device. 2. The control means compares the output voltage value with a predetermined reference value, and outputs a comparison value signal of the difference value; a pulse width modulation signal based on the comparison value signal. 2. The power supply device according to claim 1, further comprising: a pulse width modulation signal generation circuit for controlling the output power of the control power output means. 3. The input-side detecting means and the output-side detecting means include a serially connected resistor for obtaining a divided voltage and a resistor for detecting a flowing current as a drop voltage. 1. The power supply device according to 1. 4. A connection point of a series-connected resistor in the input-side detection means and a drop-voltage generating end of the resistor are connected to add the divided voltage at the series-connected resistor and the drop voltage of the resistor. 4. The power supply device according to claim 3, wherein the control means controls the output power of the control power output means based on the voltage of the added value when the high pressure discharge lamp is stably turned on. 5. A diode is connected between the connection point of the series connection resistor of the input side detection means and the connection point of the series connection resistor of the output side detection means, and the input side voltage value is the output side voltage value. When it is larger, the diode conducts, and the control means controls the control power output means by the added value of the divided voltage when the series-connected resistors are connected in parallel and the voltage drop of the resistors, and the high voltage discharge is performed. After the electric lamp is started, a large amount of electric power is supplied, or when the output side voltage value is larger than the input side voltage value, the diode becomes non-conducting, and the control means starts the high pressure discharge lamp only by the input side voltage value. 5. The power supply device according to claim 4, wherein the power supply device supplies power lower than output power in a region where the lamp voltage immediately after is low. 6. A power supply device according to claim 1, 2, 3, 4 or 5, and a high pressure discharge lamp in which at least mercury is sealed and which is turned on by an output voltage of the power supply device. High pressure discharge lamp lighting device. 7. The high pressure discharge lamp lighting device according to claim 6, wherein a metal halide lamp containing xenon gas and a metal halogen compound is used as the high pressure discharge lamp. 8. The high pressure discharge lamp lighting device according to claim 6 or 7, further comprising a light control means for reflecting and / or transmitting the light emitted from the high pressure discharge lamp to radiate the light to the outside. Lighting equipment. 9. The lighting device according to claim 8, further comprising: a light emission color changing unit that transmits light emitted from a high pressure discharge lamp and changes a light emission color as the light control unit.