JPH0665166B2 - Variable light color lighting device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light color variable lighting device, that is, a lighting device capable of easily obtaining a light color suitable for the light color.

2. Description of the Related Art In recent years, there has been an increasing desire to change the atmosphere of a room depending on the situation and the circumstances, as the living life is improved and the lifestyle is changed. As a means for changing the atmosphere, a lighting device is mentioned as well as furniture and furniture. For example, it is desirable to have a light that makes people feel relaxed when they are tired, a light that brings together people when spending time with their family, and a light that creates a brilliant atmosphere when holding parties. Furthermore, with the changes in the four seasons, warm lights in winter and cool lights in summer are desired.

The atmosphere created by such light depends on the fixture itself, but is also greatly affected by the color of the light.

To change the color of light, as is well known, red, green,
It is sufficient to change the light quantity ratio of the blue light component. In fact, by controlling the light amount ratio of these three components, various lights desired by the user have been developed and put to practical use.

However, in the current general housing situation, there are few rooms that have the number of rooms that can realize separate light spaces according to the occasion. Therefore, despite the fact that many lighting fixtures and lighting devices are on the market, the fact is that only standard light colors are actually selected and used for ordinary homes. .

On the other hand, in the field of advertising and decoration, three kinds of light sources of red, green, and blue are used, each of which is made to blink, or the ratio of the amount of emitted light of each is changed to freely obtain the desired color of light. Has been.

Problems to be Solved by the Invention However, lighting devices for general houses have restrictions different from those in the fields of advertising and decoration, and cannot be diverted as they are.

That is, in a general house, the area and volume of the room are small, and it is desirable that the lighting device be small in view of such spatial restrictions. In addition, since it is a place of living and a place of rest, there are restrictions not only in terms of economy but also in terms of design and appearance when lighting.

Conventionally, it has been shown that monochromatic light or mixed-color light is obtained by putting a color bulb or a color fluorescent tube having a spherical or rod-shaped appearance different in color from each other into a translucent case made of acrylic resin and blinking these light sources. ing. In this type of device, no particular consideration is given to uniform light mixing.

By the way, in a device using a spherical or rod-shaped color light source, in order to make the light mixture uniform, a large number of light sources of different colors are arranged with regularity, or the light scattering property of the case is used. It is possible to do it. However, in the former case, the power consumption is large and it is not economical,
Not suitable for residential use. In the latter case, there is no particular problem in terms of economic efficiency, but in order to sufficiently mix light, the case has to be enlarged, which is also unsuitable for residential use.

Means for Solving the Problems In the variable color illumination device of the present invention, a plurality of annular fluorescent lamps having different ring diameters are arranged so that the centers of the respective rings are located substantially on the same line. Of the circular fluorescent lamps, the circular fluorescent lamp with the largest ring diameter is a fluorescent lamp that mainly emits blue color, and the other circular fluorescent lamps that mainly emit blue color emit fluorescent light of a color different from blue. It is a lamp and has a configuration in which the light output of at least one of the plurality of annular fluorescent lamps is variable.

Since a plurality of annular fluorescent lamps are used as the light source, the light mixing becomes extremely easy as compared with the case where a plurality of light bulb-shaped or linear light sources are used. Then, by selectively increasing or decreasing the light output of any one of the annular fluorescent lamps or blinking the light output, light of a desired color can be emitted.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the variable light color illuminator of the embodiment of the present invention has a ring diameter of a 40 W blue annular fluorescent lamp 1, a 32 W red annular fluorescent lamp 2 and a 30 W green annular fluorescent lamp 3. 2 different from each other
It is equipped with a circular fluorescent lamp. Each of the annular fluorescent lamps 1, 2, and 3 has electrodes (not shown) at both ends of a glass tube, and mercury and a rare gas are enclosed inside the electrodes. On the inner surface of the glass tube of the annular fluorescent lamp 1, divalent europium-activated strontium-calcium-barium-chloroapatite [3 (S
A blue-emitting phosphor composed of r, Ca, Ba) ₃ (PO ₄ ) ₂ Cl: Eu ²⁺ ] is formed on the inner surface of the glass tube of the annular fluorescent lamp 2 by trivalent europium-activated yttrium oxide (Y ₂ O ₃ :). The red light-emitting phosphor made of Eu ³⁺ ) is formed on the inner surface of the glass tube of the annular fluorescent lamp 3 by terbium- and cerium-activated lanthanum phosphate (LaPO ₄ : Tb, C).
Each of the green-emitting phosphors consisting of e) is applied. These annular fluorescent lamps 1, 2 and 3 are provided in a light diffusing shade 4 and are hooked and locked by a locking metal fitting 6 attached to a reflecting mirror 5 located on the upper surface of the shade 4. There is. A circular opening 7 is formed in the lower surface of the shade 4, and a translucent cover 8 is attached to the inside thereof. The diameter of this opening is such that when the device is looked up from directly below, the annular fluorescent lamp 3 having the smallest annular diameter cannot be seen.

FIG. 2 is a diagram for explaining a light control device of such a light color variable illumination device.

In FIG. 2, the annular fluorescent lamps 1, 2, 3 are high-frequency lighting circuits 10, 1 including a ballast provided in a box of the control device 9.
It is connected to 1 and 12, respectively. In the box of the control device 9, there is further provided a dimmer 13, 14, 15 having a phase control circuit including a thyristor connected to the ballasts 10, 11, 12 respectively.
Is provided. Then, the knobs 16, 17, 18 provided so as to project to the outside of the box of the control device 9 are appropriately slid up and down to change the conduction angles of the thyristors of the dimmers 13, 14, 15 to form an annular shape. It is possible to change the current flowing through the fluorescent lamps 1, 2, and 3 to change the light output of the annular fluorescent lamps 1, 2, and 3. In FIG. 2, 19 indicates an electrode.

Now, referring to FIG. 2, such a device is connected to a commercial AC power source, the circular fluorescent lamps 1, 2 and 3 are lit at a high frequency by a high frequency lighting circuit, and the knobs 16, 17 and 18 are slid up and down to an appropriate position. Set to, dimmers 13,1 depending on their position
Since the conduction angle of each thyristor of 4,15 is determined, the current flowing through each annular fluorescent lamp 1,2,3 is also determined, and the annular fluorescent lamps 1,2,3
Each light output of is set. The circular fluorescent lamps 1, 2, and 3 emit blue light, red light, and green light, respectively, according to their light output magnitudes. Then, the lights of these three colors are mixed and emitted to the outside through the shade 4. Therefore, it is possible to obtain lights having various colors.
Therefore, according to such a device, it is possible to produce various atmospheres depending on time, place, and the like. In addition, it is possible to produce according to the four seasons, such as blue for coolness in summer, red for warmth in winter, and green for spring and autumn to bring out freshness. Become.

In addition, the circular fluorescent lamps 1, 2, 3 are arranged so that the centers of their rings are located substantially on the same straight line, so that the lights emitted from each are uniformly mixed, and it is possible to obtain light of a uniform color tone. it can. Therefore, since the color tone of the light becomes uniform over the entire illumination area, there is no unevenness of color in the room, and there is no fear of making a person feel uncomfortable.

Furthermore, when a light bulb or a straight tube fluorescent lamp is used, light sources of different colors are unevenly distributed, and an extremely large shade is required to obtain light of a uniformly mixed color.
On the other hand, in the present embodiment, as described above, the light source itself uses the annular fluorescent lamp that facilitates light mixing, and is arranged so that the entire apparatus is extremely miniaturized.

The ring diameter of the blue annular fluorescent lamp 1 with low visibility is set to be larger than those of the other annular fluorescent lamps 2 and 3, and the light output is set to be larger than the others, so that a visually balanced light color is obtained. Can be easily realized.

3 and 4 are cross-sectional views showing the structure of another embodiment of the present invention. In these figures, components corresponding to those in the embodiment shown in FIG. 1 are designated by the same reference numerals.

In the embodiment shown in FIG. 3, annular fluorescent lamps 1, 2, 3 having different ring diameters are arranged in a substantially concentric shape. According to this device, since the three annular fluorescent lamps 1, 2, and 3 are arranged on substantially the same plane, not only the entire device is downsized, but also a form similar to a disc-shaped light source, The mixed light is made more uniform.

Similar to the embodiment shown in FIG. 1, these embodiments can also change the light color and can easily obtain a desired color of light depending on the time, place and situation. Is.

In the embodiment shown in FIG. 4, two annular fluorescent lamps 1 and 20 having different ring diameters are arranged so as to be located on substantially the same plane. A blue fluorescent lamp similar to that described above is used as the annular fluorescent lamp 1 having a large ring diameter, and a so-called white fluorescent lamp is used as the annular fluorescent lamp 20 having a small ring diameter. When the light output of the annular fluorescent lamp 1 that mainly emits blue light is increased, the color temperature of the light source is increased, and the light gives a cool feeling. On the contrary, when the light output of the annular fluorescent lamp 1 is reduced, the color temperature is lowered, and the light becomes warmer accordingly.

Blue light is a component with low visibility, so blue fluorescent lamp 1
Even if the light output of is changed or turned off, if the white ring fluorescent lamp 20 is turned on, the change in brightness is not felt so much. Note that instead of a white fluorescent lamp as the circular fluorescent lamp 20, a circular fluorescent lamp that emits light of a warm white color or a color close to a light bulb color may be used, or a combination of a plurality of types of these fluorescent lamps may be used. You may.

Further, the dimmers may be replaced with switches, respectively, and they may be selectively turned on and off.

EFFECTS OF THE INVENTION The variable light color illumination device of the present invention has almost no unevenness in color tone in the emission direction of light as compared with a device using a light bulb or a straight tube fluorescent lamp, and obtains illumination light having a uniform color tone over almost the entire illumination region. In addition to being able to easily achieve a visually balanced light color, it is smaller and consumes less power than a device that uses a light bulb and has the same light output. It can be made smaller than the device using the.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an embodiment of a variable color illumination device according to the present invention, FIG. 2 is a block diagram for explaining an example of its usage, and FIGS. It is sectional drawing of other Examples. 1,2,3,20 …… Circular fluorescent lamp, 4 …… Sade, 5 …… Reflecting mirror, 6 …… Locking metal fitting, 7 …… Translucent cover, 9 …… Control device.

Front page continuation (72) Inventor Yoshinori Yoshimura, Osaka Prefecture Kadoma City 1006 Kadoma, Matsushita Electric Industrial Co., Ltd. (72) Inventor Saburo Ishihara Osaka Kadoma City, Kadoma 1048, Matsushita Electric Works Co., Ltd. (56) References JP 58-46504 (JP, A) JP 59-163703 (JP, A) Actual 60-90796 (JP, U) Actual 50-64174 (JP, U) Actual 53-2461 (JP, Y2) Actual public Sho 50-41718 (JP, Y2)

Claims (5)

[Claims] 1. A plurality of annular fluorescent lamps having different ring diameters are arranged such that the centers of the respective rings are located substantially on the same straight line, and the ring diameter is the largest among the plurality of annular fluorescent lamps. The circular fluorescent lamp is a fluorescent lamp that mainly emits blue light, and the other circular fluorescent lamp that is a circular fluorescent lamp that mainly emits blue light is a fluorescent lamp that mainly emits light of a color different from blue, and the plurality of circular fluorescent lamps are further included. A light color variable lighting device in which at least one of the light outputs is variable. 2. The variable light color illuminating device according to claim 1, wherein the other annular fluorescent lamps mainly emitting blue light are fluorescent lights emitting red and green, respectively. 3. A variable light color illumination device according to claim 1, wherein the other annular fluorescent lamp, which is mainly a fluorescent lamp emitting blue light, is a fluorescent light emitting substantially white light. 4. The other annular fluorescent lamp of the annular fluorescent lamp which mainly emits blue is a fluorescent lamp which mainly emits one of red and green, and the remaining annular fluorescent lamp is a fluorescent lamp which emits substantially white light. The variable light color illumination device according to claim 1. 5. The variable light color illumination device according to claim 1, wherein the heights of the positions where the plurality of annular fluorescent lamps are arranged are different.