JPH0574573A - Lighting source control device - Google Patents

Abstract

PURPOSE:To make it possible to use an ordinary voltage converter whether it is a dimmer type or not. CONSTITUTION:Since a dimmer circuit 4 controls the feeding power to a halogen lamp 6 at the output side of a converter 2, not only an electronic transformer which can dim at the primary side, but also an electronic transformer which cannot dim at the primary side can be used as a converter 2. Power can be fed to a motor to rotate the lamp 6, for example, from the output side of the converter 2. Consequently, the cost can be reduced, a lighting system including the lamp 6, the motor, and the like, can be made compact, and its high function can be realized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for a light source such as a low voltage halogen lamp.

[0002]

2. Description of the Prior Art Halogen lamps have been proposed for use in lighting systems in audio and video rooms because of their vivid light and color. Conventionally,
To control the light emitted by such a halogen lamp,
A light source controller is used as shown in FIG. Light control circuit 4 for controlling the light emitted from the halogen lamp 6.
0 is A, which is generally called a dimmable electronic transformer.
The C / AC converter 20 is provided on the primary side, that is, the input side, receives a commercial power supply voltage of 100 V, for example, and controls the electric power supplied to the halogen lamp 6. Converter 2
0 converts the voltage output from the dimming circuit 40 into a low voltage adapted to the nominal voltage of the halogen lamp 6, for example, 12 V, and outputs the low voltage to the halogen lamp 6.

[0003]

Since the conventional light source control device shown in FIG. 4 controls the power on the input side of the converter 20, the converter that can be used is limited to the dimmable type, and therefore the cost is reduced. Will be higher.

Further, even if a plurality of light sources such as halogen lamps are provided on the output side of the converter 20, simultaneous dimming of these plural light sources can be performed, but dimming cannot be individually performed.

Furthermore, since the output of the converter 20 cannot be used as a power source for a device other than the light source or a device related to the light source (for example, a motor for moving the light source),
A separate power source must be provided for such equipment.

The present invention has been made in view of such circumstances, and an object thereof is to provide a light source control device which can use a general voltage converter, not limited to a dimmable type.

Another object of the present invention is to provide a light source control device capable of individually dimming a plurality of light sources.

Another object of the present invention is to provide a light source control device which does not require a separate power source for equipment different from the light source.

Another object of the present invention is to provide a light source control device which eliminates the need for a separate power supply for equipment related to the light source.

[0010]

A light source control device according to a first aspect of the present invention includes a light source, a converter for converting a power source voltage into a required voltage, and a light provided by the light source provided on the output side of the converter. And a dimming unit for controlling the power supplied to the light source for controlling.

A light source control device according to a second aspect of the present invention is provided with a plurality of light sources, a converter for converting a power supply voltage into a required voltage, and an output side of the converter, each of which emits light emitted by the plurality of light sources. A plurality of light control means for controlling electric power supplied to a plurality of light sources for control.

A light source control device according to a third aspect of the present invention is provided with a light source, a converter for converting a power supply voltage into a required voltage, and an output side of the converter. The light source control device controls the light emitted from the light source. Is provided on the output side of the converter, and output means for providing an output to the device for operating a device different from the light source.

According to a fourth aspect of the present invention, there is provided a light source control device, wherein a light source, a converter for converting a power supply voltage into a required voltage, and a light source provided on an output side of the converter for controlling light emitted from the light source. A dimming means for controlling the electric power supplied to the converter, and an output means provided on the output side of the converter for providing a device output for operating a device associated with the light source (for example, a motor for moving the light source). It is characterized by being provided.

[0014]

In the light source control device having the structure of the first aspect, since the light control means controls the power supplied to the light source at the output side of the converter, the converter is not limited to the primary side dimmable electronic transformer. That is, it is possible to use an electronic transformer that cannot control the primary side light. Therefore, the cost can be reduced.

In the light source control device of the second aspect,
Since each of the plurality of dimming means controls the power supplied to the corresponding one of the plurality of light sources on the output side of the converter, individual dimming of the plurality of light sources is possible.

In the light source control device of the third aspect, since the output means for operating the device other than the light source is fed from the converter for the light source, the output means is provided with another power source unless it is particularly high power. Since it is not necessary to provide a separate power source for the device, the cost can be reduced.

In the light source control device of the fourth aspect, since the output means for operating the device related to the light source is fed from the light source converter, it is not necessary to provide a separate power source. The cost can be reduced. Further, it is possible to realize downsizing and high functionality of a lighting device including a light source and equipment related thereto.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the configuration of an embodiment of a light source control device of the present invention. AC / AC generally called electronic transformer
Converter 2 receives a commercial AC voltage of 100V and converts it into an AC voltage of 12V which is a nominal voltage of halogen lamp 6. The AC / AC converter 2 can be composed of, for example, a switching regulator including a rectifier circuit, a pair of switching transistors, a transformer, and the like.
Various other converters can be used, and any configuration can be used as long as the input voltage can be converted into a required voltage.

The dimming circuit 4 is provided on the output side of the converter 2 and controls the electric power supplied to the halogen lamp 6 in order to control the light emitted by the halogen lamp 6. Light control circuit 4
For example, as disclosed in Japanese Patent Application No. 2-192239, the generation timing of the drive signal of the triac is controlled, the period during which the triac is turned on is changed, and the power supply to the lamp 6 is controlled. However, the present invention is not limited to this, and various configurations can be adopted.

In the embodiment of FIG. 1 having the above-mentioned structure, the dimming circuit 4 controls the power supplied to the lamp 6 at the output side of the converter 2, so that the converter 2 is a primary-side dimmable electronic transformer. Of course, an electronic transformer that cannot be dimmed on the primary side can also be used. Therefore, the cost can be reduced.

FIG. 2 shows another embodiment of the light source control device of the present invention. The AC / AC converter 2 is the same as the converter 2 of FIG. The output side of the converter 2 is provided with three dimming circuits 4a, 4b, 4c for controlling the power supplied to these halogen lamps 6a, 6b, 6c in order to control the light emitted from these lamps, respectively. There is. The dimming circuits 4a, 4b, 4c can be configured by various circuits such as one using a triac like the dimming circuit 4 of FIG.

In the embodiment of FIG. 2 having the above-mentioned configuration, 3
Each of the three dimming circuits 4a, 4b, 4a controls the power supplied to the corresponding one of the three lamps 6a, 6b, 6c at the output side of the converter 2, so that these three
Individual dimming of two lamps is possible.

In the embodiment of FIG. 2, the number of lamps is three, but the number can be increased or decreased if necessary, and the number of dimming circuits can be increased or decreased accordingly.

FIG. 3 shows the configuration of another embodiment of the present invention. The AC / AC converter 2 is the same as the converter 2 of FIG. A plurality of lighting devices 10A, 10B, ... Are provided on the output side of the converter 2. Lighting device 1
0A is a halogen lamp 6a and a dimming circuit 4a provided on the output side of the converter 2 for controlling the power supplied to the lamp 6a in order to control the light emitted by the lamp 6a.
And a drive unit 7a composed of a motor for rotating the lamp 6a, and a drive control circuit 8 provided on the output side of the converter 2 for supplying drive control power to the drive unit 7a.
a and.

Although not shown, the lighting device 10B has, for example, a lamp and a dimming circuit similar to those of the lighting device 10B, and three motors for causing the lamp to perform pan operation, tilt operation, and vertical movement operation, respectively. A converter 2 is provided to supply drive control power to each of these motors.
And three drive control circuits provided on the output side of. Japanese Patent Application No. 2-265045 discloses an example of an illuminating device such as a desk light or a floor light in which a motor driving means is provided in a movable part for changing the illuminating direction by a light source such as a lamp.

The illuminating device 10 of the embodiment of FIG.
In A, the drive control circuit 8a that supplies drive control power to the drive unit 9a that rotates the lamp 6a includes the lamp 6
Since the power is supplied from the converter 2 for a, it is not necessary to provide a separate power source, so that the cost can be reduced. Also,
The lighting device including the lamp 6a and the motor for driving the lamp 6a can be downsized.

When the lamp includes three motors for performing the pan operation, the tilt operation, and the vertical movement operation, as in the above-described illumination device 10B, drive control of these motors is provided on the output side of the converter 2. By providing the circuit, it is possible to simultaneously realize downsizing and high functionality of the lighting device.

The embodiment of FIG. 3 is a case where the equipment related to the lamp is a motor for rotating the lamp or three motors for causing the lamp to perform pan operation, tilt operation and vertical movement operation, respectively. The invention is not limited to this, and for example, a focus adjusting device, a color changing device,
It can be applied to a light distribution control device such as a light projection pattern changing device, and can be applied to a light source related device other than the light distribution control.

The present invention can also be applied to power supply to equipment such as a lamp that is not related to a light source. Also in this case, since the output means is provided on the output side of the converter 2 for giving the output of the control power or the like to the device, the output means is fed from the converter for the light source. Since it is not necessary to provide a separate power source for the equipment, the cost can be reduced.

In the above embodiment, the AC / AC converter is used as the converter for converting the power supply voltage into the required voltage. However, a DC / AC converter can be used, and a transformer using a coil is used. You can also do it.

Further, in the above embodiment, the halogen lamp is used as the light source, but the present invention is not limited to this and can be applied to various light sources.

[0032]

As is apparent from the above description, claim 1
According to the light source control device, the dimming means controls the electric power supplied to the light source at the output side of the converter. Therefore, not only the primary side dimmable electronic transformer but also the primary side can be used as the converter. Electronic transformers that cannot be dimmed can also be used. Therefore, the cost can be reduced.

According to the light source control device of the second aspect, since the plurality of light control means corresponding to the plurality of light sources are provided on the output side of the converter, individual light control for the plurality of light sources is possible.

According to the light source control device of the third aspect, the output means for operating the device different from the light source is provided on the output side of the converter for the light source. Since it is not necessary to provide a separate power source for the device, the cost can be reduced.

According to the light source control device of the fourth aspect, since the output means for operating the device associated with the light source is provided on the output side of the converter for the light source, it is not necessary to provide a separate power source. The cost can be reduced. Further, it is possible to realize downsizing and high functionality of a lighting device including a light source and equipment related thereto.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a light source control device of the present invention.

FIG. 2 is a block diagram showing the configuration of another embodiment of the light source control device of the present invention.

FIG. 3 is a block diagram showing the configuration of another embodiment of the light source control device of the present invention.

FIG. 4 is a block diagram showing an example of a conventional light source control device.

[Explanation of symbols]

 2 AC / AC converter 4, 4a, 4b, 4c Dimming circuit 6, 6a, 6b, 6c Halogen lamp 8a Drive control circuit 9a Drive unit 10A, 10B Lighting device

Claims (4)

[Claims] 1. A light source, a converter for converting a power supply voltage into a required voltage, and an output side of the converter, which controls power supplied to the light source to control light emitted from the light source. A light source control device comprising: a light control unit. 2. A plurality of light sources, a converter for converting a power supply voltage into a required voltage, and a plurality of light sources provided on an output side of the converter for controlling lights emitted from the plurality of light sources, respectively. A light source control device comprising: a plurality of dimming means for controlling power supplied to the light source. 3. A light source, a converter for converting a power supply voltage into a required voltage, and an output side of the converter, which controls power supplied to the light source to control light emitted from the light source. A light source control device comprising: a dimming device; and an output device which is provided on the output side of the converter and provides an output to the device for operating a device different from the light source. 4. A light source, a converter for converting a power supply voltage into a required voltage, and an output side of the converter, which controls power supplied to the light source to control light emitted from the light source. A light source control device comprising: a dimming unit; and an output unit which is provided on an output side of the converter and provides an output to the device for operating a device associated with the light source.