JPH10335074A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system in which various kinds of lighting can be controlled by varying the moving speed between light dimming levels. SOLUTION: A light sensor 6 detects brightness of the radiation range, and the output is input into a microcomputer 14 of a control part 11 through a light sensor input unit 13. The light dimming ratio set by a dimmer 15 is input as a light dimming ratio setting value into a microcomputer through a light dimming setting part 12. The output of the light sensor 6 and the light dimming ratio setting value of the light dimming ratio are compared with each other by the microcomputer. When the specified brightness corresponding to the set light dimming ratio matches the brightness of the radiation range, detected by the light sensor, the level difference between them is zero. When external light enters the radiation range, the brightness of the radiation range is increased, the output of the light sensor is increased, and the difference is generated between the output of the light sensor and the light dimming ratio setting value. The microcomputer restrains the difference, calculates the light dimming ratio so as to make the specified brightness, and feeds it together with a signal of the light dimming changing speed to a light dimming lighting device 5. The light dimming changing speed is controlled by a control part 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device having a control unit for changing a dimming change speed.

[0002]

2. Description of the Related Art Illumination devices in which brightness between dimming levels does not change rapidly are found in general dimming devices.
For example, there is one disclosed in JP-A-62-47992 (conventional example). FIG. 5 shows this conventional light control device. In this conventional example, the transition speed from the current dimming level to the dimming level set by the dimming level setting means can be changed by the variable resistor VR.

[0003]

In the conventional example, the transition speed of the dimming level can be freely set by the variable resistor VR.
The transition speed is kept constant at the set speed. For example, from the all-light state (100%) to the unlit state (0
%) Is twice as long as the transition time when changing from 50% dimming to the light-off state (0%).
If the transition speed is constant, there is a drawback that various illumination controls cannot be performed, and there is a problem that, for example, a change in brightness perceived by a human cannot follow.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a lighting device that can perform various lighting controls by changing a transition speed between dimming levels.

[0005]

According to a first aspect of the present invention, there is provided a lighting device, comprising: a lighting load; a dimming setting unit for setting a dimming rate of the lighting load; and an energizing of the lighting load based on the dimming rate. A dimming lighting device that changes; when the dimming ratio is changed, the dimming change speed until the dimming state is changed according to at least one of the degree of change in the dimming ratio and the dimming ratio before the change And a control unit that varies

In the present invention and the following invention, definitions and technical meanings of terms are as follows unless otherwise specified.

The lighting load means a light source usually used for lighting, such as a fluorescent lamp, a light bulb, a high-pressure discharge lamp, and the like.

The dimming lighting device is capable of varying the power supplied to the lighting load, and includes, in addition to the inverter lighting device, a device using a ballast composed of a core and a coil.

The light control may be either continuous light control or step light control.

The degree of change in the dimming rate refers to the difference between the set dimming rate and the changed dimming rate.

The variable light control change speed means that the light control speed changes in the process of changing the light control ratio, and the change can be either continuous or stepwise. You may.

When the dimming rate is changed by the dimming rate setting means of the dimming setting section, the control section of the lighting apparatus outputs a dimming change speed signal based on the degree of change of the dimming rate or the dimming rate before the change. Send to the dimming lighting device. The lighting load changes the dimming rate according to the dimming change speed signal to have a changed dimming rate. Here, whether the dimming change speed changes continuously or stepwise can be realized, for example, by controlling according to a sequence stored in the control unit.

The speed of change of brightness by changing the dimming rate is
It can be set arbitrarily to provide a variety of lighting controls. In addition, for example, a change in brightness as perceived by humans can follow, so that no discomfort is given.

According to a second aspect of the present invention, there is provided an illumination device, comprising: an illumination load; a dimming setting unit for setting a dimming rate of the illumination load; an optical sensor for detecting brightness of an illumination area of the illumination load; Correction means for changing the dimming rate so as to suppress the difference between the brightness of the irradiation area detected by the sensor and a predetermined brightness corresponding to the set dimming rate; A control unit that varies a dimming change speed until a transition to the dimming state after the change according to any one of the degree of change of the light rate, the dimming rate before the change, and the magnitude of the difference.

The optical sensor may directly detect the illuminance of the illuminated area, or may detect the reflected light of the illuminated area, or may indirectly detect another element correlated with the brightness.

When the illuminated area of the illumination device becomes bright or dark due to external light or the like, the brightness is detected by an optical sensor, and a predetermined brightness corresponding to the brightness and the dimming rate set in the dimming setting section is set. The control unit calculates a difference from the brightness, calculates a dimming rate corresponding to a predetermined brightness corresponding to the set dimming rate, and changes the dimming rate.

When the dimming rate is changed, the control unit of the lighting device adjusts the degree of change of the dimming rate, the dimming rate before the change, or the brightness of the irradiation area detected by the optical sensor and the set dimming rate. A dimming change speed signal is sent to the dimming lighting device based on a difference from the corresponding predetermined brightness. The lighting load has a dimming rate changed by performing dimming change according to the dimming change speed signal. Here, the dimming change speed signal is a difference between the degree of change of the dimming rate or the dimming rate before the change or the brightness of the irradiation area detected by the optical sensor and a predetermined brightness corresponding to the set dimming rate. It is controlled according to. Whether the dimming change speed changes continuously or stepwise can be realized by controlling, for example, according to a sequence stored in the control unit.

When it is desired to increase or decrease the predetermined brightness by changing the dimming rate, the dimming rate can be manually changed in the dimming setting section.

Since the light sensor detects the brightness, the irradiation area of the lighting device is illuminated with a predetermined brightness, and the predetermined brightness can be freely set by changing a dimming rate in a dimming setting section. . At this time, the speed of change of the brightness by changing the dimming rate can be freely set so that the change of the brightness according to the human sense can follow, for example, so as not to give a discomfort to a human.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of a lighting device of the present invention, and FIG. 2 is a lighting fixture of the lighting device of the present invention.

In FIG. 2, a fluorescent lamp 4 as an illumination load is connected between the lamp sockets 3 and 3 of the lighting fixture 2, and a dimming lighting device 5 for energizing the fluorescent lamp 4 is provided inside the lighting fixture 2. Housed, fluorescent lamp 4 and dimming lighting device 5
Are connected by wiring (not shown). Further, an optical sensor 6 is mounted on the end of the lighting fixture 2. The dimming lighting device 5 and the optical sensor 6 are connected to a control unit shown in FIG.
The lighting fixture 2 is installed on a ceiling 7 or the like, and an irradiation area 8 is formed on a lower surface side. The optical sensor 6 receives the reflected light from the irradiation area 8 and detects the brightness of the irradiation area 8. The irradiation area 8 is irradiated with external light 9 and the like in addition to the irradiation light from the fluorescent lamp 4.

In FIG. 1, a control unit 10 includes a control unit 11 of the lighting apparatus 1, a dimming setting unit 12 for setting a dimming rate of the fluorescent lamp 4, an optical sensor input unit 13 for inputting an output of the optical sensor 6, and the like. It is composed of The control unit 11 is equipped with a microcomputer 14 for performing arithmetic processing, and the control unit 11 is connected to the dimming lighting device 5 housed in the lighting fixture 2 by wiring (not shown). The dimmer setting unit 13 is connected to a dimmer 15 as dimming rate varying means.
In this embodiment, the control unit 10 is the lighting device 2.
However, it may be housed in the lighting fixture 2 or may be provided with the lighting fixture 2. Further, the light sensor 6 may be separately provided without being mounted on the lighting fixture 2 and may directly or indirectly detect the brightness of the irradiation area 8. Further, the dimmer 15 need not be provided if the dimming rate can be set by the dimming setting unit 12 of the control unit 10.

Next, the operation of the embodiment of the present invention will be described.

When the fluorescent lamp 4 of the lighting fixture 2 illuminates the irradiation area 8 with a predetermined brightness at the set dimming rate, the optical sensor 6 detects the brightness of the illumination area 8 and
The output S is input to the microcomputer 14 of the control unit 11 via the optical sensor input unit 13. On the other hand, the dimming rate set by the dimmer 15 is input to the microcomputer 14 of the control unit 11 via the dimming setting unit 12 as the dimming rate setting value C. Both the output S of the optical sensor 6 and the dimming rate setting value C are amplified and calculated, and compared with each other. At this time, when the predetermined brightness corresponding to the set dimming rate matches the brightness of the irradiation area 8 detected by the optical sensor 6, the level difference between the two becomes zero.

When external light 9 or the like enters the irradiation area 8, the brightness increases and the output S of the optical sensor 6 also increases. Then
Dimming rate set value C corresponding to the set dimming rate and light sensor 6
A difference is generated between the output S and the output S. The microcomputer 14 calculates a dimming rate so that the irradiation area 8 has a predetermined brightness, and sends it to the dimming lighting device 5 together with a dimming change speed signal. The dimming lighting device 5 lights the fluorescent lamp 4 at the changed dimming rate. The dimming change speed is based on the degree of change of the dimming rate, the dimming rate before the change, or the difference between the brightness of the irradiation area 8 detected by the optical sensor 6 and a predetermined brightness corresponding to the set dimming rate. It is controlled by the control unit 11. These selections and combinations may be set as appropriate.

FIG. 3 shows an example of a flowchart of the internal processing of the microcomputer 14. For example, the dimming rate before the change is 7
When the relative difference with respect to the predetermined brightness is 0% at 0%, the dimming control is performed at a dimming change speed of 4% / sec. As the dimming rate before the change is higher and the difference is larger, the dimming change speed is faster.

FIG. 4 shows an example in which the dimming change speed is varied stepwise. Control is performed at a high speed in a place where the dimming rate is high, and is controlled slowly in a place where the dimming rate is low.

When the light such as the external light 9 enters the irradiation area 8 and the brightness decreases, the control unit 11 controls the lighting device 1 so that the dimming rate set at the beginning is obtained.

[0029]

According to the first aspect of the present invention, the speed of change in brightness by changing the dimming rate can be set arbitrarily, and the variety of lighting control can be achieved. In addition, for example, a change in brightness as perceived by humans can follow, so that no discomfort is given.

According to the second aspect of the present invention, the light sensor detects the brightness and controls the lighting device, so that the light is illuminated at a predetermined brightness. The brightness can be set freely by changing the brightness, and the speed of change of the brightness can be freely set so that the change in brightness according to the human sense can be followed so as not to cause discomfort to the human.

[Brief description of the drawings]

FIG. 1 is a block diagram of a lighting device of the present invention.

FIG. 2 is a cross-sectional view of a lighting device of the lighting device of the present invention.

FIG. 3 is an example of a flowchart of internal processing of a microcomputer of the lighting device of the present invention.

FIG. 4 is an example of control based on a dimming change speed of the lighting device of the present invention.

FIG. 5 is a block diagram of a conventional dimming control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Illumination device 4 Fluorescent lamp 5 Dimming lighting device 6 Optical sensor 11 Control part 12 Dimming setting part

Claims (2)

[Claims] An illumination load; a dimming setting unit for setting a dimming rate of the illumination load; a dimming lighting device for energizing the illumination load based on the dimming rate; A control unit that varies a dimming change speed until a transition to the post-change dimming state in accordance with at least one of the degree of change of the dimming ratio or the dimming ratio before the change. . An illumination load; a dimming setting unit for setting a dimming rate of the illumination load; an optical sensor for detecting a brightness of an illumination area of the illumination load; and a brightness of the illumination area detected by the optical sensor. Correction means for changing the dimming rate so as to suppress the difference from a predetermined brightness corresponding to the set dimming rate; when the dimming rate is changed, the degree of change of the dimming rate, the dimming before the change A control unit configured to vary a dimming change speed until a transition to a changed dimming state according to one of the light rate and the magnitude of the difference.