JPH05299180A - Lighting system - Google Patents

Abstract

PURPOSE:To resolve the discomfort and malaise when the type of a light source is switched by gradually increasing or decreasing the light quantity of the light source to be switched for mode switching. CONSTITUTION:When the lighting of an incandescent lamp 5 is to be switched to the lighting of a fluorescent lamp 3, the conductive angle of the phase control element of a phase control circuit 11 is gradually decreases by a conductive angle control circuit 12 to gradually decrease the light quantity of the incandescent lamp 5, and the oscillation frequency of an inverter circuit 9 is gradually decreased by a frequency control circuit 10 to gradually increase the light quantity of the fluorescent lamp 3. When the fluorescent lamp 3 is to be switched to the incandescent lamp 5 on the contrary, the conductive angle of the phase control element is gradually increased, and the oscillation frequency of the inverter circuit 9 is gradually increased. Lighting is smoothly switched, and the discomfort and malaise can be mitigated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of light sources of different types, such as fluorescent lamps and incandescent lamps having different lighting systems, or a plurality of fluorescent lamps having different light colors (for example, white fluorescent lamp and The present invention relates to a lighting device provided with a light bulb color fluorescent lamp) and capable of switching the lighting state.

[0002]

2. Description of the Related Art A conventional lighting device will be described with reference to FIG. In this lighting device, a fluorescent lamp lighting circuit unit 32 is connected to an AC power supply 31, and a fluorescent lamp 33 is connected to the fluorescent lamp lighting circuit unit 32. An incandescent lamp 35 is connected to the AC power supply 31 via an incandescent lamp lighting circuit section 34. The fluorescent lamp 33 and the incandescent lamp 35 are contained in one lighting fixture. Then, the lighting switching control circuit unit 36 causes the fluorescent lamp lighting circuit unit 32 and the incandescent lamp lighting circuit unit 34.
The fluorescent lamp 33 and the incandescent lamp 35 can be selectively turned on by controlling.

The lighting device shown in FIG. 8 described above changes the atmosphere in the room where lighting is performed by switching between the fluorescent lamp 33 and the incandescent lamp 35, which are different types of light sources, and lighting them. The lighting switching control circuit unit 36 switches the lighting of the fluorescent lamp 33 and the incandescent lamp 35, which are the light sources. The fluorescent lamp 33 and the incandescent lamp 35 have different lighting types and naturally different light colors.

In the case of such an illuminating device, the fluorescent lamp 3
When 3 is lit, it provides refreshing and cool lighting, when the incandescent lamp 35 is lit, it provides warm lighting, and when both are lit, it provides lighting of these mixed colors. It has a feature that the atmosphere in the room can be switched according to the purpose of utilizing.

[0005]

However, the conventional example has the following problems. That is,
When switching from a mode in which only the fluorescent lamp 33 is turned on to a mode in which only the incandescent lamp 35 is turned on, or when a mode in which only the incandescent lamp 35 is turned on is switched to a mode in which only the fluorescent lamp 33 is turned on, a lighting switching control circuit section 36 From fluorescent lamp lighting circuit section 32
The incandescent lamp lighting circuit unit 34 is simply supplied with a signal for switching between lighting and extinguishing, and when the light source is switched, the illuminance in the room changes suddenly or the atmosphere changes as the lighting color changes. Changes abruptly, which may cause discomfort or discomfort.

In order to solve the above problems, a phase control circuit is used as the incandescent lamp lighting circuit section 34, and when the incandescent lamp 35 is switched from the extinguished state to the lit state or from the lit state to the extinguished state. There is a configuration in which the light quantity of the incandescent lamp 35 is smoothly increased or decreased (gradual increase or decrease) by gradually changing the conduction angle of the phase control element.

Referring to FIG. 9, in the lighting device configured to gradually increase or decrease only the light amount of the incandescent lamp 35 as described above, the fluorescent lamp 3 is switched from the lighting mode of only the incandescent lamp 35.
The time chart which shows the illuminance change in a room at the time of shifting to the lighting mode of only 3 is shown. In FIG. 9, a period T _A is a period of a mode in which only the incandescent lamp 35 is lit, and the incandescent lamp 35 is lit at a constant light amount (rated lighting),
The illuminance in the room is constant. The period T _B is a transition period in which the mode in which only the incandescent lamp 35 is lit is changed to the mode in which only the fluorescent lamp 33 is lit, and the light amount of the incandescent lamp 35 gradually decreases to zero, and the light amount of the incandescent lamp 35 becomes zero. Immediately before, the fluorescent lamp 33 is turned on, the amount of light thereof is rapidly increased, the illuminance in the room is gradually decreased and then rapidly increased, and the illumination color is also rapidly changed. The period T _C is a mode period in which only the fluorescent lamp 33 is lit, the fluorescent lamp 33 is lit with a constant light amount (rated lighting), and the illuminance in the room is constant.

However, even in the illuminating device having such a structure, the fluorescent lamp 33 is simply switched on / off, so that the illuminance in the room is changed or the illumination color is changed when the light source is switched. The atmosphere changes abruptly with the change, and it is impossible to eliminate the discomfort and discomfort. Therefore, an object of the present invention is to provide an illuminating device that can eliminate discomfort and discomfort when switching the type of light source to be turned on.

[0009]

A lighting device according to claim 1 has a lighting switching control circuit section for controlling lighting and extinguishing of different types of first and second light sources housed in one fixture. When the mode switching is performed by the lighting switching control circuit unit between the mode in which only the first light source is turned on and the mode in which only the second light source is turned on, the light amounts of the first and second light sources are gradually changed. Then, the mode is switched.

According to another aspect of the lighting device of the present invention, the first and second light sources of different types housed in one fixture are turned on.
A lighting switching control circuit unit for controlling extinction is provided, and a mode for lighting both the first and second light sources, a mode for lighting only the first light source, and a second
When the mode is switched in a loop between the mode of turning on only the light source and the mode of turning off both of the first and second light sources, the light amount of the first and second light sources is gradually changed. I am trying to switch.

[0011]

According to the structure of claim 1, when the mode is switched from the mode in which only the first light source is turned on to the mode in which only the second light source is turned on, or vice versa, The light amount of the first light source is gradually changed, and the light amount of the second light source is gradually changed, opposite to the first light source. As a result, for example, when the state in which only the first light source is turned on is changed to the state in which only the second light source is turned on, the illuminance in the room is changed from the illuminance when only the first light source is turned on to only the second light source is turned on. When the light colors of the first and second light sources are different, the indoor illumination color also changes from the single light color of the first light source to the mixed light color of the first and second light sources. After that, it gradually changes to the single light color of the second light source. Therefore, when the mode is switched from the mode in which only the first light source is turned on to the mode in which only the second light source is turned on, or vice versa, a sudden change in the illuminance or the illumination color in the room may occur. Does not occur,
No discomfort or discomfort.

According to the second aspect of the invention, when switching from the mode in which both the first and second light sources are turned on to the mode in which only the first light source is turned on, the light amount of the first light source remains unchanged. Only the light quantity of the second light source is gradually reduced to zero. As a result, the illuminance in the room smoothly changes from the illuminance when both the first and second light sources are turned on to the illuminance only when the second light source is turned on, and the light colors of the first and second light sources are different. In this case, the illumination color in the room gradually changes from the mixed light color of the first and second light sources to the single light color of the second light source.

When switching from the mode in which only the first light source is turned on to the mode in which only the second light source is turned on, the light amount of the first light source is gradually reduced to zero and the light amount of the second light source is changed. Contrary to the first light source, it is gradually increased. As a result, the illuminance in the room smoothly changes from the illuminance when only the first light source is lit to the illuminance when only the second light source is lit, and when the light colors of the first and second light sources are different, The illumination color of the first light source also gradually changes from the single light color of the first light source to the single light color of the second light source through the mixed light color of the first and second light sources.

When switching from the mode in which only the second light source is turned on to the mode in which both the first and second light sources are turned off, the second light source is turned off while the first light source is turned off.
Only the light quantity of the light source of is gradually reduced to zero. As a result, the illuminance in the room smoothly decreases from the illuminance when only the second light source is turned on. At this time, the illumination color of the room maintains the single light color of the second light source.

Further, when switching from the mode in which both the first and second light sources are turned off to the mode in which both the first and second light sources are turned on, both the light amounts of the first and second light sources are gradually increased. Let As a result, the illuminance in the room gradually increases to reach the illuminance when both the first and second light sources are on. At this time, the indoor illumination color maintains the mixed light color of the first and second light sources.

Therefore, a mode in which both the first and second light sources are turned on, a mode in which only the first light source is turned on, a mode in which only the second light source is turned on, and both the first and second light sources are turned off. When the mode switching is performed in a loop between the mode and the mode to be performed, a sudden change in the illuminance or the illumination color in the room does not occur, and no discomfort or discomfort is given.

Further, for example, when the mode in which only the second light source is turned on is switched to the mode in which both the first and second light sources are turned off, the illuminance in the room is smoothed from the illuminance when only the second light source is turned on. In addition, the illuminance in the room gradually increases when switching from a mode in which both the first and second light sources are turned off to a mode in which both the first and second light sources are turned on. It is possible to prevent sudden darkening or brightening.

Therefore, by properly setting the increasing / decreasing gradients of the light amounts of the first and second light sources, the eyes can be accustomed to the illuminance change in the room. As a result, it is possible to suppress anxiety caused by the situation in which the interior of the room cannot be recognized immediately after the light is turned off, and it is possible to suppress the feeling of glare immediately after the light is turned on.

[0019]

Embodiments of the present invention will now be described with reference to the drawings. [First Embodiment] An illumination device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. This lighting device
As shown in FIG. 1, a fluorescent lamp lighting circuit unit 2 is connected to an AC power source 1, and a fluorescent lamp 3 is connected to the fluorescent lamp lighting circuit unit 2. An incandescent lamp 5 is connected to the AC power source 1 via an incandescent lamp lighting circuit unit 4. The fluorescent lamp 3 and the incandescent lamp 5, which are different light sources, are contained in one lighting fixture.

By controlling the fluorescent lamp lighting circuit section 2 and the incandescent lamp lighting circuit section 4 by the lighting switching control circuit section 6, the fluorescent lamp 3 and the incandescent lamp 5 can be turned on simultaneously or selectively. I am able to do it. In this case, the lighting switching control circuit unit 6 turns on both the fluorescent lamp 3 and the incandescent lamp 5, a mode for turning on only the fluorescent lamp 3, a mode for turning on only the incandescent lamp 5, and a fluorescent lamp 3. And a mode in which both of the incandescent lamps 5 are turned off, and at least one of mode switching from a mode in which only the fluorescent lamp 3 is turned on to a mode in which only the incandescent lamp 5 is turned on and vice versa can be performed. It is configured to be able to.

The fluorescent lamp lighting circuit section 2 uses a full-wave rectifier 7 and a smoothing capacitor 8 for rectifying and smoothing the voltage of the AC power source 1, and a voltage obtained across the smoothing capacitor 8 as a power source to supply high frequency power to the fluorescent lamp 3. It is composed of an inverter circuit 9 which supplies the fluorescent lamp 3 for high frequency lighting, and a frequency control circuit 10 which controls the oscillation frequency of the inverter circuit 9.

The frequency control circuit 10 controls the start / stop of the oscillating operation of the inverter circuit 9 and the oscillating frequency on the basis of the signal given from the lighting switching control circuit section 6 to change the power supplied to the fluorescent lamp 3. The fluorescent lamp 3 is turned on / off and the amount of light at the time of turning on / off is controlled. In the inverter circuit 9, when the oscillation frequency changes, the power supplied to the fluorescent lamp 3 changes because the output current of the inverter circuit 9 is provided with a lamp current limiting element such as an inductor and a capacitor, and the oscillation frequency changes. This is because the impedance of the lamp current limiting element increases or decreases due to the change, and the lamp current changes.

The incandescent lamp lighting circuit section 4 includes a phase control circuit 11 including a phase control element such as a triac provided in series with the incandescent lamp 5, and a conduction control for controlling the conduction angle of the phase control element of the phase control circuit 11. And the angle control circuit 12. The conduction angle control circuit 12 includes the lighting switching control circuit unit 6
The conduction angle of the phase control element of the phase control circuit 11 is controlled on the basis of a signal given by the switch, and the lamp current flowing through the incandescent lamp 5 is intermittently and increased / decreased to switch on / off of the incandescent lamp 5, and at the time of the lighting. The light amount is controlled to increase or decrease.

In the lighting device having the configuration shown in FIG. 1 as described above, the lighting switching control circuit section 6 gives a signal to the fluorescent lamp lighting circuit section 2 and the incandescent lamp lighting circuit section 4 so that the fluorescent lamp 3 and the incandescent lamp 5 are connected. It is possible to change the lighting (illuminance, illumination color, etc.) in the room by switching the lighting of, and the atmosphere in the room can be changed accordingly. On this occasion,
The lighting switching control circuit unit 6 gradually changes the light amounts of the fluorescent lamp 3 and the incandescent lamp 5 when performing mode switching between a mode in which only the incandescent lamp 5 is lit and a mode in which only the fluorescent lamp 3 is lit. I am trying to switch modes.

In the case of such an illuminating device, as described in the prior art, when the fluorescent lamp 3 is turned on, a refreshing and cool illumination is provided, and when the incandescent lamp 5 is turned on, a warm illumination is provided. When both are turned on, the lights of mixed colors are provided, and the atmosphere in the room can be switched according to the purpose of using the room.

At this time, for example, when the mode is switched from the mode in which only the incandescent lamp 5 is turned on to the mode in which only the fluorescent lamp 3 is turned on, the light amount of the incandescent lamp 5 is gradually decreased and the light amount of the fluorescent lamp 3 is changed to the incandescent lamp 5. On the contrary, gradually increase. In this case, the light amount of the incandescent lamp 5 gradually decreases
The conduction angle control circuit 12 receives the signal from the lighting switching control circuit unit 6
Can be realized by gradually decreasing the conduction angle of the phase control element of the phase control circuit 11. Further, the gradual increase in the light amount of the fluorescent lamp 3 can be realized by the frequency control circuit 10 gradually lowering the oscillation frequency of the inverter circuit 9 with a signal from the lighting switching control circuit unit 6. The light amount of the incandescent lamp 5 can be gradually increased by gradually increasing the conduction angle of the phase control element of the phase control circuit 11, and the light amount of the fluorescent lamp 3 can be decreased by gradually increasing the oscillation frequency of the inverter circuit 9. It can be realized.

As a result, the illuminance in the room smoothly changes from the illuminance when only the incandescent lamp 5 is lit to the illuminance when only the fluorescent lamp 3 is lit, and the light colors of the fluorescent lamp 3 and the incandescent lamp 5 are different, so The illumination color of (1) gradually changes from the single light color of the incandescent lamp 5 to the mixed light color of the fluorescent lamp 3 and the incandescent lamp 5 and then to the single light color of the fluorescent lamp 3. Therefore, when the mode is switched from the mode in which only the incandescent lamp 5 is turned on to the mode in which only the fluorescent lamp 3 is turned on, there is no sudden change in the illuminance or the illumination color in the room,
No discomfort or discomfort.

Note that if the lighting switching control circuit section 6 can switch the mode from the mode in which only the fluorescent lamp 3 is lit to the mode in which only the incandescent lamp 5 is lit, at this time as well, it is similar to the above. With this configuration, the illuminance or the illumination color in the room does not suddenly change, and no discomfort or discomfort is given. Here, the operation of the illumination device of FIG. 1 will be described with reference to FIG.

FIG. 2 shows a time chart of each part when the mode is switched from the mode in which only the incandescent lamp 5 is turned on to the mode in which only the fluorescent lamp 3 is turned on in the lighting apparatus of this embodiment. 2, (a) shows changes in the lamp current flowing through the incandescent lamp 5, (b) shows changes in the light output (light amount) of the incandescent lamp 5, and (c) shows changes in the oscillation frequency of the inverter circuit 9. (D) shows a change in the lamp current of the fluorescent lamp 3, and (e) shows a change in the light output (light amount) of the fluorescent lamp 3.

In FIG. 2, a period T ₁ is a period in which the incandescent lamp 5 is turned on and the fluorescent lamp 3 is turned off.
The period T ₂ indicates a period in which the light source to be turned on is switched from the incandescent lamp 5 to the fluorescent lamp 3. In the period T ₁ , the incandescent lamp 5 is turned on with a constant light amount and the fluorescent lamp 3 is turned off. During this period T ₁ , the phase control circuit 11 is fully conductive in each half cycle of the AC power supply 1. On the other hand, the inverter circuit 9 is substantially in the oscillation stopped state.

In the period T ₂ , the conduction angle in the phase control circuit 11 gradually decreases, the lamp current of the incandescent lamp 5 gradually decreases, and the amount of light also decreases. On the other hand, the inverter circuit 9 starts oscillating immediately after entering the period T ₂ and turns on the fluorescent lamp 3, but the oscillation frequency is initially high and then gradually decreases, so that the fluorescent lamp 3 The lamp current gradually increases and the amount of light also increases. The increase in the light amount of the incandescent lamp 5 and the decrease in the light amount of the fluorescent lamp 3 occur at substantially the same time.

In the case where the mode is switched from the mode in which only the fluorescent lamp 3 is turned on to the mode in which only the incandescent lamp 5 is turned on in the lighting device of this embodiment, FIG.
The frequency control circuit 10 and the conduction angle control circuit 12 are controlled so as to perform a process reverse to the process shown in FIG. Figure 3
In addition, the illuminance change in the room when the frequency control circuit 10 and the conduction angle control circuit 12 are controlled as shown in FIG. 2 to shift from the mode in which only the incandescent lamp 5 is turned on to the mode in which only the fluorescent lamp 3 is turned on. Shows a time chart of.

In FIG. 3, a period T _A is a period of a mode in which only the incandescent lamp 5 is lit, the incandescent lamp 5 is lit at a constant light amount (rated lighting), and the illuminance and illumination color in the room are constant ( Warm light color). During the period T _{B, the} fluorescent lamp 3 is switched from the mode in which only the incandescent lamp 5 is turned on.
In the transition period in which only the incandescent lamp is turned on, the light amount of the incandescent lamp 5 gradually decreases to zero, and the light amount of the fluorescent lamp 3 gradually increases at substantially the same timing, and the illuminance in the room changes from the illuminance by the incandescent lamp 5 to the fluorescent lamp. The illuminance according to 3 rises smoothly. Further, the illumination color also gradually changes from the light color of the incandescent lamp 5 to the light color of the fluorescent lamp 3 (from warm light color to refreshing light color). The period T _C is a period of a mode in which only the fluorescent lamp 3 is lit, the fluorescent lamp 3 is lit with a constant light amount (rated lighting), and the indoor illuminance and illumination color are constant (fresh light color). is there.

As described above, the lighting device of this embodiment changes the atmosphere in the room when switching the lighting from the incandescent lamp 5 to the fluorescent lamp 3 or when switching the lighting from the fluorescent lamp 3 to the incandescent lamp 5. In addition, the illuminance in the room and the illumination color in the room can be smoothly changed in the process of the change, and discomfort and discomfort caused by switching the light source to be turned on can be eliminated.

If the fluorescent lamps 3 and the incandescent lamps 5 having the same amount of light are selected, when switching the lighting from the incandescent lamp 5 to the fluorescent lamp 3 or switching the lighting from the fluorescent lamp 3 to the incandescent lamp 5, The illumination color can be changed while keeping the illuminance constant. [Second Embodiment] A second embodiment of the present invention will be described with reference to FIG.

This illuminating device has the same circuit configuration as that of FIG. 1, and the lighting switching control circuit unit 6 switches the lighting and extinguishing modes of the fluorescent lamp 3 and the incandescent lamp 5 as shown in FIG. 3 and the incandescent lamp 5 are both on, the mode M ₁ is on, only the fluorescent lamp 3 is on, the mode M ₂ is on, the incandescent lamp 5 is on and the mode M _{3 is on,} and both the fluorescent lamp 3 and the incandescent lamp 5 are off. ₄ has a configuration in which mode switching is performed in a loop between the fluorescent lamp 3 and the incandescent lamp 5.
The mode switching is performed by gradually changing the amount of light.

In recent years, the lighting device is easy to operate and easy to use.
From the viewpoint of goodness, it can be operated remotely using infrared signals.
Flashing control of lighting (hereinafter called remote control) is performed.
It's growing. So, using a remote controller for different light sources
When controlling blinking, switch the loop mode as described above.
Replacement control is performed. Fluorescent lamp 3 and above
Mode M for turning on both the incandescent lamp 5₁Lighting
The warm color of the incandescent lamp 5 and the fluorescent lamp
With a mixture of the refreshing (cool) light color of 3
Become. Mode M for turning on only the fluorescent lamp 3₂Is Teru
The light color becomes a cool light color. Only the incandescent lamp 5 is turned on
Mode M ₃Gives a warm light color.

When switching on / off of the fluorescent lamp 3 and the incandescent lamp 5 in the four types of modes as described above,
The mode switching is performed by gradually changing the light amounts of the fluorescent lamp 3 and the incandescent lamp 5 as follows. That is, when switching from the mode M _{1 in} which both the fluorescent lamp 3 and the incandescent lamp 5 are turned on to the mode M _{2 in} which only the fluorescent lamp 3 is turned on, the light amount of the fluorescent lamp 3 remains unchanged and only the light amount of the incandescent lamp 5 is gradually reduced. To zero. As a result, when the illuminance in the room smoothly changes from the illuminance when both the fluorescent lamp 3 and the incandescent lamp 5 are turned on to the illuminance only when the incandescent lamp 5 is turned on, and the light colors of the fluorescent lamp 3 and the incandescent lamp 5 are different. Then, the illumination color in the room gradually changes from the mixed light color of the fluorescent lamp 3 and the incandescent lamp 5 to the single light color of the incandescent lamp 5.

When switching from the mode M ₂ for turning on only the fluorescent lamp 3 to the mode M ₃ for turning on only the incandescent lamp 5, the light amount of the fluorescent lamp 3 is gradually reduced to zero and the light amount of the incandescent lamp 5 is changed. On the contrary to the fluorescent lamp 3, it is gradually increased. As a result, the illuminance in the room is reduced by the fluorescent lamp 3.
The illuminance of only the incandescent lamp 5 changes smoothly to the illuminance of only the incandescent lamp 5, and the fluorescent lamp 3 and the incandescent lamp 5
When the light color of the fluorescent lamp 3 is different, the illumination color of the room also gradually changes from the single light color of the fluorescent lamp 3 to the mixed light color of the fluorescent lamp 3 and the incandescent lamp 5 to the single light color of the incandescent lamp 5.

When switching from the mode M _{3 in} which only the incandescent lamp 5 is turned on to the mode M _{4 in} which both the fluorescent lamp 3 and the incandescent lamp 5 are turned off, the fluorescent lamp 3
Is turned off and only the light amount of the incandescent lamp 5 is gradually reduced to zero. As a result, the illuminance in the room smoothly decreases from the illuminance when only the incandescent lamp 5 is turned on. At this time, the illumination color of the room maintains the single light color of the incandescent lamp 5.

When switching from the mode M ₄ for turning off both the fluorescent lamp 3 and the incandescent lamp 5 to the mode M ₁ for turning on both the fluorescent lamp 3 and the incandescent lamp 5, the light amount of the fluorescent lamp 3 and the incandescent lamp 5 is changed. Both are gradually increased. As a result, the illuminance in the room gradually increases to reach the illuminance when both the fluorescent lamp 3 and the incandescent lamp 5 are on. At this time, the illumination color of the room maintains the mixed light color of the fluorescent lamp 3 and the incandescent lamp 5.

Although the four types of mode switching modes have been described above, four types of mode switching modes, which are opposite to the above four types of mode switching modes, are provided when the loop mode switching mode has reversibility. The mode switching mode occurs. The operation at that time is just the opposite of the above description. Therefore, a mode M ₁ for turning on both the fluorescent lamp 3 and the incandescent lamp 5, a mode M ₂ for turning on only the fluorescent lamp 3 and a mode M ₃ for turning on only the incandescent lamp 5 and both of the fluorescent lamp 3 and the incandescent lamp 5 are set. when performing the looped mode switching between a mode M ₄ for turning off causes no abrupt change in the indoor illuminance or illumination color, it does not feel uncomfortable and unnatural.

Further, for example, when the mode M ₃ for turning on only the incandescent lamp 5 is switched to the mode M ₄ for turning off both the fluorescent lamp 3 and the incandescent lamp 5, the illuminance in the room is changed from the illuminance when only the incandescent lamp 5 is turned on. The illuminance in the room gradually increases, for example, when the mode M _{4 in} which both the fluorescent lamp 3 and the incandescent lamp 5 are turned off is switched to the mode M _{1 in} which both the fluorescent lamp 3 and the incandescent lamp 5 are turned on. Therefore, it is possible to prevent the room from rapidly changing from a bright state to a dark state or from changing from the dark state to a suddenly bright state. Therefore, by appropriately setting the increasing and decreasing gradients of the light amounts of the fluorescent lamp 3 and the incandescent lamp 5, the eyes can be accustomed to the illuminance change in the room. As a result, it is possible to suppress anxiety caused by the situation in which the interior of the room cannot be recognized immediately after the light is turned off, and it is possible to suppress the feeling of glare immediately after the light is turned on.

[Third Embodiment] A third embodiment of the present invention will be described with reference to FIG. This illuminating device has the same circuit configuration as that of FIG. 1, and the lighting switching control circuit unit 6 switches between the lighting and extinguishing modes of the fluorescent lamp 3 and the incandescent lamp 5 as shown in FIG. Mode M ₁₁ for dimming both lamps 5 and fluorescent lamp 3
A mode is switched in a loop between a mode M _{12 in} which only the rated light is turned on, a mode M _{13 in} which only the incandescent lamp 5 is rated and a mode M _{14 in} which both the fluorescent lamp 3 and the incandescent lamp 5 are turned off, In this configuration, the light amounts of the fluorescent lamp 3 and the incandescent lamp 5 are gradually changed to perform mode switching. The other points are similar to those of the second embodiment.

With this configuration, the mode M ₁₁ ,
The illumination color or the appearance of the color can be changed while the illuminance is substantially constant between M ₁₂ and M ₁₃ . The same effect as that of the second embodiment can be obtained by making the mode switching among the modes M ₁₁ , M ₁₂ , M ₁₃ , and M ₁₄ similar to that of the second embodiment. [Fourth Embodiment] A fourth embodiment of the present invention will be described with reference to FIGS. 6 and 7.

This illuminating device shows an embodiment in which fluorescent lamps having different color temperatures (for example, a white fluorescent lamp and a light bulb color fluorescent lamp) are contained in one luminaire. That is, as shown in FIG. 6, this lighting device uses the AC power supply 21.
Connect full-wave rectifier 22 and smoothing capacitor 23 to
The two inverter circuits 24 and 25 supply high-frequency power to the white fluorescent lamp 26 and the white fluorescent lamp 27 by using the voltage obtained across the smoothing capacitor 23 as a power source.

The lighting switching control circuit unit 28 includes the fluorescent lamp 2
The mode that turns on both 6, 27 and the fluorescent lamp 26
It has a mode in which only the fluorescent lamp 27 is turned on, a mode in which only the fluorescent lamp 27 is turned on, and a mode in which both the fluorescent lamps 26 and 27 are turned off. Only the fluorescent lamp 27 is turned on from the mode in which only the fluorescent lamp 26 is turned on. It is configured such that at least one of mode switching to a mode to be activated and vice versa can be performed.

The frequency control circuits 29 and 30 operate in the same manner as the frequency control circuit 10 of FIG.
Controlling the start / stop of the oscillation of 4, 25 and the oscillation frequency to change the power supplied to the fluorescent lamps 26, 27 to control the lighting / extinguishing of the fluorescent lamps 26, 27, and increase / decrease the amount of light at the time of lighting. To do. The inverter circuit 2
4 and 25, the power supplied to the fluorescent lamps 26 and 27 changes when the oscillation frequency changes for the same reason as in the inverter circuit 9 in FIG.

In the lighting device having the configuration shown in FIG. 6 as described above, the lighting switching control circuit section 28 gives a signal to the frequency control circuits 29 and 30 to switch the lighting of the fluorescent lamps 26 and 27, thereby lighting the room. (Illuminance, illumination color, etc.) can be changed, and the atmosphere in the room can be changed accordingly. At this time, the lighting switching control circuit unit 28
For example, when performing mode switching between a mode in which only the fluorescent lamp 26 is turned on and a mode in which only the fluorescent lamp 27 is turned on, the light amount of the fluorescent lamps 26 and 27 is gradually changed to perform the mode switching. There is.

In the case of such an illuminating device, when the white fluorescent lamp 26 is turned on, refreshing and cool lighting is provided, and when the fluorescent lamp 27 of light bulb color is turned on, warm lighting is provided, and both are turned on. During the operation, the mixed color illumination is provided, and the atmosphere in the room can be switched according to the purpose of using the room. At this time, for example, from the mode in which only the fluorescent lamp 26 is turned on, the fluorescent lamp 27
When the mode is switched to a mode in which only the fluorescent lamp 27 is turned on, the light amount of the fluorescent lamp 26 is gradually reduced and the fluorescent lamp 27 is turned on.
In contrast to the fluorescent lamp 26, the amount of light is gradually increased. In this case, the gradual increase / decrease of the light amount of the fluorescent lamps 26, 27 is controlled by the signal from the lighting switching control circuit unit 28, by the frequency control circuit 29,
This can be realized by gradually changing the oscillation frequencies of the inverter circuits 24 and 25.

As a result, the illuminance in the room smoothly changes from the illuminance when only the fluorescent lamp 26 is lit to the illuminance when only the fluorescent lamp 27 is lit, and the light colors of the fluorescent lamps 26, 27 are different, so that the indoor illumination The color also changes from the single light color of the fluorescent lamp 26 to the mixed light color of the fluorescent lamps 26 and 27 and then to the fluorescent lamp 2.
It gradually changes to 7 single light colors. Therefore, when the mode is switched from the mode in which only the fluorescent lamp 26 is turned on to the mode in which only the fluorescent lamp 27 is turned on, there is no sudden change in the illuminance or the illumination color in the room, and there is no discomfort or discomfort. ..

In addition, from the mode in which only the fluorescent lamp 27 is turned on by the lighting switching control circuit section 28, the fluorescent lamp 2
If the configuration is such that the mode can be switched to the mode in which only 6 is turned on, if the configuration is similar to that described above at this time, the illuminance in the room or the illumination color does not change suddenly,
No discomfort or discomfort. Here, the operation of the illumination device of FIG. 6 will be described with reference to FIG. 7.

FIG. 7 shows a time chart of each part when the mode is switched from the mode in which only the fluorescent lamp 26 is turned on to the mode in which only the fluorescent lamp 27 is turned on in the lighting apparatus of this embodiment. 7, (a) shows a change in the oscillation frequency of the inverter circuit 24, (b) shows a change in the lamp current of the fluorescent lamp 26, and (c) shows a change in the light output (light amount) of the fluorescent lamp 26. (D) shows a change in the oscillation frequency of the inverter circuit 25, (e) shows a change in the lamp current of the fluorescent lamp 27, and (f) shows a change in the light output (light amount) of the fluorescent lamp 27. There is.

In FIG. 2, a period T ₁ shows a period in a mode in which the fluorescent lamp 26 is turned on and the fluorescent lamp 27 is turned off, and a period T ₂ is a period in which the light source to be turned on is switched from the fluorescent lamp 26 to the fluorescent lamp 27. In the period T _3, the fluorescent lamp 27 is turned on and the fluorescent lamp 26 is turned off. During the period T ₁ , the fluorescent lamp 26 is turned on and the fluorescent lamp 27 is turned off. In this period T ₁ , the inverter circuit 24 oscillates at a predetermined frequency and the inverter circuit 25 is substantially in the oscillation stopped state.

In the period T ₂ , the oscillation frequency of the inverter circuit 24 rises, the lamp current of the fluorescent lamp 26 gradually decreases, and the amount of light thereof also decreases. On the other hand, the inverter circuit 25 starts oscillating immediately after entering the period T ₂ and turns on the fluorescent lamp 27, but the oscillation frequency thereof is initially high and then gradually decreases. The lamp current gradually increases and the amount of light also increases.

The increase in the light quantity of the fluorescent lamp 27 and the decrease in the light quantity of the fluorescent lamp 26 occur at substantially the same time. Period T ₃
Then, the fluorescent lamp 27 reaches a completely lit state, and the fluorescent lamp 26 goes out. In this period T ₃ , the inverter circuit 25 is substantially in the oscillation stopped state.

When the mode is switched from the mode in which only the fluorescent lamp 27 is turned on to the mode in which only the fluorescent lamp 26 is turned on in the lighting apparatus of this embodiment, the process reverse to the process shown in FIG. 7 is executed. Then, the frequency control circuits 29 and 30 are controlled. As described above, in the illumination device of this embodiment, as in the above-described respective embodiments, when switching the lighting from the fluorescent lamp 26 to the fluorescent lamp 27 or when switching the lighting from the fluorescent lamp 27 to the fluorescent lamp 26,
Not only can the atmosphere in the room be changed, but in the process of the change, the illuminance in the room and the illumination color in the room can be changed smoothly, and the discomfort and discomfort caused by switching the light source to be turned on can be eliminated. You can

If the fluorescent lamps 26 and 27 having the same light intensity are selected, the illuminance is changed when the lighting is switched from the fluorescent lamp 26 to the fluorescent lamp 27 or when the lighting is switched from the fluorescent lamp 27 to the fluorescent lamp 26. The illumination color can be changed while keeping it constant. Also in this embodiment, the mode switching as shown in FIG. 4 or 5 can be performed.

[0059]

According to the lighting device of the first aspect, the first
When the mode is switched between the mode in which only the light source is turned on and the mode in which only the second light source is turned on, since the light amounts of the first and second light sources are gradually changed, for example, only the first light source is turned on. When transitioning from the state of lighting only to the state of lighting only the second light source, the illuminance in the room smoothly changes from the illuminance when only the first light source is lit to the illuminance when only the second light source is lit, When the light colors of the first and second light sources are different, the illumination color of the room is also the single light color of the first light source, the mixed light color of the first and second light sources, and the single light color of the second light source. Therefore, the illuminance or the illumination color in the room does not change suddenly, and there is no discomfort or discomfort.

According to the illuminating device of the second aspect, since the light amounts of the first and second light sources are gradually changed as in the first aspect, the mode and the first mode in which both the first and second light sources are turned on. When performing mode switching in a loop between a mode in which only one light source is turned on, a mode in which only the second light source is turned on, and a mode in which both the first and second light sources are turned off, the indoor illuminance or There is no sudden change in illumination color, and there is no discomfort or discomfort.

When switching from the mode in which only the second light source is turned on to the mode in which both the first and second light sources are turned off, the light quantity of the second light source is gradually reduced to zero, so From the mode in which the illuminance is smoothly reduced and both the first and second light sources are turned off,
When switching to the mode in which both of the light sources of
Since the light intensity of both the first and second light sources is gradually increased, the illuminance in the room is gradually increased. Therefore, when the mode is switched, the room suddenly becomes dark from a bright state, or vice versa. It is possible to prevent it from becoming bright. Therefore, by appropriately setting the increasing and decreasing gradients of the light amounts of the first and second light sources, the eyes can be accustomed to the illuminance change in the room. As a result, it is possible to suppress anxiety caused by the situation in which the interior of the room cannot be recognized immediately after the light is turned off, and it is possible to suppress the feeling of glare immediately after the light is turned on.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a lighting device according to a first embodiment of the present invention.

FIG. 2 is a time chart of each part showing the operation of the lighting device of FIG.

FIG. 3 is a time chart showing a change in illuminance of illumination by the illumination device of FIG.

FIG. 4 is a flow chart showing a pattern of switching between lighting and extinguishing modes of a light source in a lighting device according to a second embodiment of the present invention.

FIG. 5 is a flowchart showing a pattern of switching between lighting and extinguishing modes of a light source in a lighting device according to a third embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of a lighting device according to a fourth embodiment of the present invention.

FIG. 7 is a time chart of each part showing the operation of the lighting device of FIG.

FIG. 8 is a block diagram showing a configuration of an example of a conventional lighting device.

9 is a time chart showing changes in illuminance of illumination by the illumination device of FIG.

[Explanation of symbols]

 1 AC power supply 2 Fluorescent lamp lighting circuit section 3 Fluorescent lamp 4 Incandescent lamp lighting circuit section 5 Incandescent lamp 6 Lighting switching control circuit section 7 Full-wave rectifier 8 Smoothing capacitor 9 Inverter circuit 10 Frequency control circuit 11 Phase control circuit 12 Conduction angle control circuit

Claims (2)

[Claims] 1. A lighting device having a lighting switching control circuit section for controlling lighting and extinguishing of different types of first and second light sources housed in one fixture, wherein: When performing mode switching between a mode in which only one light source is turned on and a mode in which only the second light source is turned on, the light amounts of the first and second light sources are gradually changed to perform mode switching. The lighting device characterized in that 2. A lighting device having a lighting switching control circuit section for controlling lighting and extinguishing of different types of first and second light sources housed in one fixture, wherein: And a mode in which both the second light source is turned on, a mode in which only the first light source is turned on, a mode in which only the second light source is turned on, and a mode in which both the first and second light sources are turned off An illumination device, wherein when performing mode switching in a similar manner, the light amounts of the first and second light sources are gradually changed to perform mode switching.