JPH07130484A - Power supply device, lamp lighting device, and lighting device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lighting device which can be reduced in size and weight and whose output can be changed. [Configuration] In the booster circuit 21, when charging the capacitors C11 to C1n, the switches SW111, SW121, SW122,
…, SW1n1 and SW1n2 are closed, and switches SW112 and SW123
Open the…. Capacitors C11 to C1n are DC power supply E
And are connected in parallel with each other to charge the capacitors C11 to C1n with the voltage of the DC power source E. When discharging the capacitors C11 to C1n, switches SW111, SW121, SW122, ..., SW
1n1 and SW1n2 are opened, and switches SW112, SW123, ... Are closed. The capacitors C11 to C1n are connected in series, and the voltage between the capacitors C11 and C1n is set to a voltage value obtained by adding the voltages of the capacitors C11 to C1n. At the time of charging / discharging the booster circuit 21, the resistance values of the variable resistors R11 to R1n are changed to control the charge / discharge amount of the capacitors C11 to C1n, and the boosting ratio of the booster circuit 21 is changed to change the fluorescent lamp FL. Can be dimmed.

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, a lamp lighting device, and a lighting device for storing electricity by electricity storage means composed of capacitors.

[0002]

2. Description of the Related Art In recent years, there has been known an illumination device in which a booster circuit is connected to a power supply circuit, a voltage boosted by the booster circuit is converted into a high frequency by an inverter circuit or the like, and a discharge lamp is lit at the high frequency.

The booster circuit charges the inductor and chops the power charged in the inductor by, for example, a transistor to boost the voltage. Since the inductor is used for charging, a winding component is required. The device becomes large, heavy, and cannot be downsized.

Further, when the output voltage is changed by the booster circuit, the on time of chopping of the transistor or the like has to be changed, so that the control becomes complicated.

[0005]

As described above, since the conventional lighting device requires the winding parts to serve as the inductor, the device becomes large in size, heavy in weight and downsized, and the output is changed. In this case, there is a problem that control becomes complicated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a power supply device, a lamp lighting device, and a lighting device which can be reduced in size and weight and whose output can be changed.

[0007]

According to a first aspect of the present invention, there is provided a power supply device having an input side connected to a power supply circuit and an output side connected to a load. The battery is provided with a storage device that is connected in parallel and that is connected to the load in series when discharged to the load, and the output voltage is selectively used by using all or part of the capacitor. It changes.

According to another aspect of the power supply device of the present invention, the power supply circuit is connected to the input side and the load is connected to the output side, and when the power supply circuit charges the power supply circuit, the power supply circuit is connected in parallel to the power supply circuit. When the battery is discharged, the storage means is configured by a capacitor connected in series to the load, and at least one of the charge and discharge amounts of the capacitor is variable.

According to a third aspect of the present invention, there is provided a lamp lighting device in which a DC / AC converting means is connected to the power supply apparatus according to the first or second aspect, and a lamp is connected as a load to the DC / AC converting means.

A lamp lighting device according to a fourth aspect is the lamp lighting device according to the third aspect, wherein the power source device and a direct current /
The AC converting means is one that operates at different frequencies.

A lamp lighting device according to a fifth aspect of the present invention is the lamp lighting device according to the third or fourth aspect, wherein the DC / AC converting means has a variable output frequency.

According to a sixth aspect of the present invention, there is provided a lighting device having the lamp lighting device according to any of the third to fifth aspects provided in a main body of a fixture.

[0013]

In the power supply device according to the first aspect of the present invention, the output voltage can be varied by using all or a part of the capacitor, and the winding parts are not required, and the size and weight can be reduced with a simple structure.

According to another aspect of the power supply device of the present invention, since the plurality of capacitors of the electricity storage means can change at least one of the charging / discharging amounts, the output voltage can be changed and the winding parts are not required. With a simple structure, it is possible to reduce the size and weight.

In the lamp lighting device according to a third aspect of the present invention, the DC / AC converting means is connected to the power supply device according to the first or second aspect, and the lamp is connected as a load to the DC / AC converting means. Can be turned on.

A lamp lighting device according to a fourth aspect is the lamp lighting device according to the third aspect, wherein the power source device and a direct current /
Since the AC converting means operates at different frequencies, they can operate at efficient frequencies.

A lamp lighting device according to a fifth aspect of the present invention is the lamp lighting device according to the third or fourth aspect, in which the DC / AC converting means can change the output because the output frequency is variable, and the lamp can be adjusted. You can turn on the light.

Since the lighting device according to claim 6 is provided with the lamp lighting device according to any one of claims 3 to 5 in the main body of the fixture, the size and weight can be reduced and the output can be changed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the illumination device of the present invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 11 denotes a trough-type instrument body, and the instrument body 11 has lamp sockets at both ends in the longitudinal direction.
A fluorescent lamp FL as a load is mounted between the lamp sockets 12 and 12, and a lamp lighting device 15 shown in FIG.

In the lamp lighting device 15, as shown in FIG. 1, a DC power source E as a power source circuit is connected to a booster circuit 21 as a power saving means.

The booster circuit 21 has a switch SW111.
, A series circuit of the variable resistor R11 and the capacitor C11, a switch SW121, a series circuit of the variable resistor R12, the capacitor C12 and the switch SW122, or a series circuit of the switch SW1n1, the variable resistor R1n, the capacitor C1n and the switch SW1n2. In addition, the connection point of switch SW111 and resistor R11 and capacitor C12 and switch SW122
The switch SW112 is connected between the connection point of the switch SW121 and the variable resistor R12, and the capacitor C13.
And switch SW132 between the connection point of switch SW132 and
3 is connected, and the switch SW133 is connected from the connection point of the switch SW131 and the variable resistor R13. And
When the capacitors C11 to C1n are charged by the switches SW111 to SW1n2, the capacitors C11 to C1n are charged.
-C1n are connected in parallel to the DC power supply E, and when each capacitor C11-C1n is discharged, each capacitor C11-
C1n is connected in series.

Further, by changing the resistance value of the variable resistors R11 to R1n, the charge / discharge amount of the capacitors C11 to C1n is adjusted.

The booster circuit 21 is connected to the filaments FL1 and FL2 of the fluorescent lamp FL via a switch SW11.
Filament FL1, FL on the booster circuit side of this fluorescent lamp FL
A capacitor C1 is connected between 2 and a switch on the other side.
SW12 is connected.

Next, the operation of the above embodiment will be described.

First, in the booster circuit 21, capacitors C11 ...
When charging C1n, switch SW111, SW121,
SW122, ..., SW1n1, SW1n2 are closed, and SW112, SW123
, And open the capacitors C11 to C1n in parallel with the DC power supply E,
Charge C11 to C1n with the voltage of DC power supply E. When discharging the capacitors C11 to C1n, switch SW11
1, SW121, SW122, ..., SW1n1, SW1n2 are opened, switches SW112, SW123, ... Are closed, and capacitors C11 to.
Connect C1n in series to connect capacitor C11 and capacitor
The voltage between C1n and the voltage of the capacitors C11 to C1n is added.

Further, when the fluorescent lamp FL is turned on,
Switch SW11 is closed and switch SW12 is closed to preheat filaments FL1 and FL2 and then light them.

When the booster circuit 21 is charged and discharged, the resistance values of the variable resistors R11 to R1n are changed to change the capacitor C1.
By controlling the charge / discharge amount of 1 to C1n and changing the step-up ratio of the step-up circuit 21, the fluorescent lamp FL can be dimmed and turned on.

As described above, by not providing the winding element having the inductance in the booster circuit 21, the size and weight of the device can be reduced.

Next, another embodiment will be described with reference to FIG.

The embodiment shown in FIG. 3 is obtained by connecting the current limiting reactor L1 to the DC power source E and removing the variable resistors R11 to R1n from the embodiment shown in FIG.

In the embodiment shown in FIG. 3, the on-duty of the switches SW111, SW121, SW122, ..., SW1n1, SW1n2 and the switches SW112, SW123 ,. Control the voltage by changing the voltage value.

Another embodiment will be described with reference to FIG.

The embodiment shown in FIG. 4 is different from the embodiment shown in FIG. 1 in that the variable resistors R11 to R1n and the capacitor C11 are used.
Instead of .about.C1n, variable capacitance capacitors C21 to C2n are connected.

In the embodiment shown in FIG. 4, the capacitances of the capacitors C21 to C2n are changed so that the capacitors C21 to C2n.
The voltage is controlled by changing the charge / discharge of C2n, and the voltage value is changed.

Further, another embodiment will be described with reference to FIG.

The embodiment shown in FIG. 5 is obtained by removing the variable resistors R11 to R1n from the embodiment shown in FIG.

When operating at the highest voltage value, as in the case shown in FIG. 1, in the booster circuit 21, when charging the capacitors C11 to C1n, the switch SW111 is used.
, SW121, SW122, ..., SW1n1, SW1n2 are closed, switches SW112, SW123, ... Are opened, and capacitors C11 to.
C1n is connected to the DC power supply E in parallel, and the capacitors C11 to C1n are charged with the voltage of the DC power supply E. When discharging the capacitors C11 to C1n, the switches SW111, SW121, SW122, ..., SW1n1,
SW1n2 is opened, switches SW112, SW123, ... Are closed, capacitors C11-C1n are connected in series, and capacitor C11
11 and the capacitor C1n
Set the voltage value to which the voltage of 1n is added.

When lowering the output voltage of the booster circuit 21, for example, the switch SW111 and the switch SW112 are used.
Is opened at the time of charging / discharging, the capacitor C11 is not connected in series, and the output voltage of the booster circuit 21 is lowered by the series voltage of the capacitors C12 to C1n. In this way, by opening the arbitrary switches SW111, SW112 ... SW1n2 and reducing the number of capacitors C11 to C1n connected in series, the output voltage of the booster circuit 21 can be lowered stepwise.

Still another embodiment will be described with reference to FIG.

The embodiment shown in FIG. 6 corresponds to the embodiment shown in FIG. 1 in which the booster circuit 21 is connected in a Fibonacci sequence type.

That is, the step-up circuit 21 includes a switch SW211, a capacitor C31 and a switch SW for the DC power source E.
212 in series with switch SW211 and capacitor
Connect switch SW213 in parallel with C31. Also,
In parallel with capacitor C31 and switch SW212,
Switch SW221, capacitor C32 and switch SW222
Connect the series circuit of switch SW221 and capacitor
Connect switch SW223 in parallel with C32. Further, in parallel with the capacitor C32 and the switch SW222, the switch SW231, the capacitor C33 and the switch SW222 are connected.
Connect a series circuit of 232, and connect switch SW233 in parallel with switch SW231 and capacitor C33. Furthermore, a series circuit of a switch SW241, a capacitor C34 and a switch SW242 is connected in parallel to the capacitor C33 and a switch SW232, and a switch SW243 is connected in parallel to the switch SW241 and the capacitor C34.

Then, when outputting at the highest voltage, the switches SW211, SW212, ..., SW241, SW242 are closed, the switches SW213, ..., SW243 are opened, and the capacitors C31 to C34 are connected to the DC power source E. Connect them in parallel with each other, and connect the capacitors C31 to C34 to the DC power supply E.
Charge with the voltage of. When discharging the capacitors C31 to C34, the switches SW211, ..., SW241 are opened, the switches SW212, SW223, ..., SW243 are closed, the capacitors C31 to C34 are connected in series, and the capacitors C31 and C34 are connected. The voltage between them is set to a voltage value obtained by adding the voltages of the capacitors C31 to C34.

When lowering the output voltage of the booster circuit 21, for example, the switch SW212 and the switch SW213 are used.
Is opened during charging / discharging, the capacitor C31 is not connected in series, and the output voltage of the booster circuit 21 is lowered by the series voltage of the capacitors C32-C34. In this way, any switches SW222, SW223, SW232, SW233, ..., SW
242 and SW243 are opened, and the corresponding arbitrary capacitor C31
By electrically removing ~ C34 from the circuit, it is possible to reduce the number of capacitors C31 ~ C34 connected in series, and by removing any capacitors C31 ~ C34, the output voltage of the booster circuit 21 can be stepped. Can be reduced.

Further, another embodiment will be described with reference to FIG.

The embodiment shown in FIG. 7 is different from the embodiment shown in FIG. 4 in that the full-bridge type inverter circuit 22 as the DC / AC converting means is connected and the fluorescent lamp FL is lit by high frequency AC. is there.

The inverter circuit 22 includes a switch SW21 and a switch SW in parallel with the capacitor C1.
22 series circuit and the series circuit of switch SW23 and switch SW24 are connected, and these switch SW21 and switch SW24
Between the connection point of SW22 and the connection point of switch SW23 and switch SW24, connect a capacitor C2 and a series circuit of filaments FL1, FL2 of fluorescent lamp FL, and connect a capacitor C3 for starting between filaments FL1, FL2. It is connected.

Then, the switch SW21 and the switch SW
24 and the switch SW23 and the switch SW22 are, for example, 4
By alternately turning on and off at a frequency of 0 kHz,
The fluorescent lamp FL is turned on at a high frequency.

The same effect can be obtained by connecting any of the booster circuits 21 to the inverter circuit 22.

[0050]

According to the power supply device of the first aspect, the output voltage can be varied by using all or a part of the capacitor, and the winding parts are not required, and the structure is simple, compact and lightweight. Can be realized.

According to the power supply device of the second aspect, since the plurality of capacitors of the electricity storage means can change at least one of the charging / discharging amounts, the output voltage can be changed and the winding parts are not required. Therefore, the size and weight can be reduced with a simple structure.

According to the lamp lighting device of the third aspect,
Since the DC / AC converting means is connected to the power supply device according to claim 1 and the lamp is connected as a load to the DC / AC converting means, the lamp can be efficiently lit.

According to the lamp lighting device of the fourth aspect,
In addition to the lamp lighting device according to claim 3, since the power supply device and the DC / AC conversion means operate at different frequencies,
Each can operate at an efficient frequency.

According to the lamp lighting device of the fifth aspect,
In addition to the lamp lighting device according to claim 3 or 4, DC /
Since the output frequency of the AC conversion means is variable, the output can be changed, and the lamp can be dimmed and turned on.

According to the lighting device of the sixth aspect, since the lamp lighting device according to any of the third to fifth aspects is provided in the main body of the fixture, the size and weight can be reduced and the output can be changed.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of a lighting device of the present invention.

FIG. 2 is a perspective view showing the outer appearance of the same.

FIG. 3 is a circuit diagram showing another embodiment of the same as above.

FIG. 4 is a circuit diagram showing another embodiment of the above.

FIG. 5 is a circuit diagram showing still another embodiment of the same.

FIG. 6 is a circuit diagram showing still another embodiment of the same.

FIG. 7 is a circuit diagram showing another embodiment of the above.

[Explanation of symbols]

 11 Instrument main body 15 Lamp lighting device 21 Step-up circuit as electricity storage means 22 Inverter circuit as DC / AC conversion means C11 to C1n, C21 to C2n, C31 to C34 Capacitor E DC power supply as power supply circuit FL Fluorescent lamp as load

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ichiro Yokoseki 4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Inside Toshiba Lighting & Technology Corporation

Claims (6)

[Claims] 1. A power supply circuit is connected to an input side and a load is connected to an output side. When the power supply circuit is charged, the power supply circuit is connected in parallel to the power supply circuit, and when the load is discharged, the load circuit is connected to the power supply circuit. A power supply device comprising a storage device configured by a capacitor connected in series to a load, wherein the output voltage is changed by selectively using all or part of the capacitor. 2. A power supply circuit is connected to an input side and a load is connected to an output side. When the power supply circuit is charged, the power supply circuit is connected in parallel with the power supply circuit, and when the load is discharged, the load circuit is connected to the power supply circuit. A power supply device, comprising: a storage device configured by a capacitor connected in series to a load, wherein the capacitor is capable of varying at least one of a charging / discharging amount. 3. A lamp lighting device characterized in that a DC / AC converting means is connected to the power supply device according to claim 1 or 2, and a lamp is connected as a load to the DC / AC converting means. 4. The power supply device and the DC / AC conversion means,
The lamp lighting device according to claim 3, wherein the lamp lighting device operates at different frequencies. 5. The lamp lighting device according to claim 3, wherein the DC / AC converting means has a variable output frequency. 6. A lighting device comprising the lamp lighting device according to any one of claims 3 to 5 provided in a fixture body.