JP2000082304A - Color lighting unit and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color lighting unit easy to mount to a lighting system and good in color lighting effect due to a color-mixing by providing a substrate, an RGB emission element group and an electric wiring means disposed on the substrate, constituted such that the RGB emission element group can be independently controllably connected to a power source in every color emission element. SOLUTION: In a substrate 1, a printing wiring as an electric wiring means is formed on a back surface and the substrate 1 is provided with an inserting hole for a general illumination lamp socket 14 at a center and has a disc shape in which a positioning hole for mounting a lamp socket 3 and a terminal- inserting hole are formed. As the printing wiring on the back surface of the substrate 1, input terminals against respective color emission elements R, G, B and a printing wiring land as a wiring to the respective color emission elements connected to the input terminals are formed around the terminal- inserting hole. RGB emission element group 2 is provided with red emission element R of four lamps, green emission element G of four lamps and blue emission element B of eight lamps and are annularly disposed in two rows.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color lighting unit suitable for color lighting and a lighting apparatus using the same.

[0002]

2. Description of the Related Art Various color lights can be obtained by additively mixing color lights. On the stage and in studios, beautiful colored light can be obtained by additive color mixing in the background light, or projected by monochromatic lighting.
Furthermore, the light color is continuously changed over time.

It has been known for a long time to produce various color lights by additive color mixture of red light, green light and blue light.

[0004] Recently, emphasis has been placed on the use of color lighting to ease human feelings and stabilize the mind. In addition, there is an increasing demand to change the atmosphere of a space such as a room by using color lighting or to simply enjoy colored light.

[0005] In order to meet such a demand, a relatively small-sized color lighting device for a small number of persons, such as individuals and families, has appeared. This device has a configuration in which red, green and blue dichroic filters are attached to the front of three halogen lamps with a rating of 150 W with a mirror, and light is projected and illuminated on a wall or a ceiling to perform additive color mixing. If an attempt is made to produce white by additive color mixing, the power consumption will be a maximum of 450 W, and heat generation cannot be ignored, and since the light distribution will be geometrically shifted, it is not always possible to produce perfect white light. Without mounting, separately equipped with a 150W mirror halogen bulb that emits white light,
The rated power consumption is 600 W in total. (Prior art 1) Color light can be easily obtained by combining an incandescent light bulb with a color filter. Therefore, various proposals have been made in addition to the above.

For example, Japanese Patent Application Laid-Open No. 48-10892 discloses that a light source that emits a plurality of types of color light is surrounded by a shield, and a light diffusing cylindrical color mixture is disposed above the shield. A proposed structure has been proposed. (Prior Art 2) JP-A-61-158608 proposes a structure in which light sources of three primary colors are housed in a glove, and the light sources are individually adjusted. (Prior art 3)

In the prior art 1, since additive color mixing is performed by projection with three halogen lamps with a reflecting mirror, it is impossible to perform color illumination with sufficient color mixing in a relatively small space. . In addition, since additive color mixing is performed by floodlighting, in order to perform illumination with sufficient expanse, a high ceiling, a large area without features, and a white wall are required.

[0007] The prior arts 2 and 3 are both dedicated lighting devices for color lighting. For general lighting in a room, it is necessary to separately provide a lighting device for general lighting.
There is a problem with the grounding location and cost.

The present invention provides a color lighting unit which can be easily attached to a lighting device and has a good color lighting effect by mixing colors, and has a general lighting function and a color lighting function by incorporating the color lighting unit. It is an object of the present invention to provide a lighting device that can arbitrarily select any one of general lighting and color lighting as desired, has little interference between general lighting and color lighting, and exhibits good performance in any lighting. And

[0009]

According to the first aspect of the present invention, there is provided a color lighting unit, comprising: a substrate; and a plurality of red, green and blue light emitting elements, respectively, wherein different light emitting colors are mixed and arranged on the substrate. A plurality of RGB light-emitting element groups provided; and electrical wiring means configured to connect the RGB light-emitting element groups to a power supply so as to be individually controllable for each color light-emitting element.

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

(Regarding the Substrate) The substrate has a plate shape and functions to mechanically support each color light emitting element and mechanically support the color illumination unit with respect to the illumination device. If necessary, the substrate can also function to support the electric wiring means for each color light emitting element.

Further, the substrate can be formed in a ring shape, if necessary, in order to arrange a plurality of RGB light emitting element groups, which will be described later, in different colors. However, taking into account other purposes, such as for supporting a general lighting lamp, any shape such as a disk shape is allowed if necessary.

Further, the substrate may be a single body or may be divided into a plurality of parts.

Further, the substrate can be constituted by a printed wiring board in order to support the electric wiring on the substrate.

Furthermore, when the substrate is disposed in the lighting device so as to be exposed, it can be formed on the reflection surface by whitening the surface.

(Regarding RGB Light Emitting Element Group) The RGB light emitting element group includes a red light emitting element, a green light emitting element, and a blue light emitting element. They are arranged on the board in a mixed manner.

The RGB light emitting element group may include light emitting elements of different light colors, for example, white light emitting elements, intermediate color light emitting elements, and the like, in addition to the above-described light emitting elements of each color.

As the light emitting elements constituting the RGB light emitting element group, incandescent lamps, light emitting diodes, glow discharge lamps and the like can be used alone or in combination.

When an incandescent light bulb is used as the light-emitting element, it is preferable to use as many small-sized light bulbs as possible in order to increase the definition of color mixture.

Further, the respective color light emitting elements of the RGB light emitting element group may be mounted on the substrate via a lamp socket or directly on the substrate. In the latter case, the lead wires of the light emitting element may be simply connected by soldering to the board provided with printed wiring, or the light emitting element may be supported on the board via a holder provided on the board and the lead wires may be connected as required. You may.

The RGB light emitting element groups may be arranged so that different light emitting colors are mixed, such that adjacent light emitting colors are arranged in a ring shape, or a red light emitting element, a green light emitting element and a blue light emitting element are arranged in a triangle. To form one unit, and a plurality of these units can be spread over the surface.

When the light-emitting elements of each color are arranged in a ring, either one row or a plurality of rows may be used. In the case of a plurality of columns, the number of light emitting elements included in each column may be equal or different. Further, the light emitting elements in the column can be arranged such that different light emitting colors are adjacent to each other. Further, when the blue light emitting elements in one row and the red light emitting elements and the green light emitting elements arranged in the other rows are located at the vertices of a triangle and constitute one unit, the light emission of one row All elements may be blue. Furthermore, when the number of blue light-emitting elements is twice that of the red light-emitting element or the green light-emitting element, the blue light-emitting elements should be arranged in a line so that the blue light-emitting elements are adjacent to both sides of the red light-emitting element and the green light-emitting element. Can be. In addition, there are various specific modes for coexisting the respective color light emitting elements depending on the shape of the substrate and the like.

(Electrical Wiring Means) The electrical wiring means is a means for connecting the RGB light emitting element groups to a power supply so as to be individually controllable for each color light emitting element, and connects between each color light emitting element and the power supply. . However, the present invention allows light control means, switches, and the like to be interposed between each color light emitting element and the power supply.

The electric wiring means can be integrated with the substrate by forming the substrate with a printed wiring board. However, the electric wiring means may be constituted by using a lead wire with an insulating coating.

When the light control means is interposed, the light control means may be integrated with the color lighting unit, or may be separately provided. Further, the light control means may be integrated with the lighting device, or may be separately provided and separately provided at positions separated from each other.

(Regarding the operation of the present invention) The present invention has the above-mentioned configuration, and when the color lighting unit is incorporated in the lighting device, it can be attached to the lighting device via the substrate, so that the work becomes easy. .

Further, since each color light-emitting element is provided in plural and arranged so that different light-emitting colors are mixed, each light-emitting element of each color is miniaturized and arranged around a general lighting lamp. It becomes easier. Along with this, it becomes easy to make the color lighting unit less likely to interfere with general lighting during general lighting. In other words, when the general illumination lamp is turned on, when the emitted light passes through the color illumination unit and enters the light diffusion cover, colored light is generated, causing unevenness in the colored light in the light diffusion cover, and the fixture efficiency is reduced. Resulting in. In the present invention, the above state is called interference of the color lighting unit with general lighting.

Further, in the present invention, since each color light emitting element is plural and different light colors are mixed, good additive color mixture can be obtained over the entire circumference of the light diffusion cover during color illumination.

However, the present invention can also be incorporated into a lighting device dedicated to color lighting which does not include a general lighting lamp, and in this case, it is apparent that the main effects among the above-described effects are achieved.

The color lighting unit according to the second aspect of the present invention comprises:
2. The color lighting unit according to claim 1, wherein the electric wiring means is formed integrally with the substrate in advance.

In order to integrally form the electric wiring means on the substrate in advance, for example, a printed wiring is formed on an insulating substrate, or a metal plate punched wiring body is sandwiched between a pair of insulating plates. Can be adopted.

Thus, in the present invention, since the electric wiring means is preliminarily integrated with the substrate, mechanical support and electrical connection of each color light emitting element of the RGB light emitting element group can be performed together. At the same time, handling becomes easy.

According to a third aspect of the present invention, there is provided a color lighting unit,
The color lighting unit according to claim 1 or 2,
Each color light emitting element is characterized by being constituted by a small base lamp with a combination of color filters.

[0034] Since the baseless compact light bulb does not use a base made of a metal or a synthetic resin, there is no light loss due to the base, and the life is reduced to 10 by sealing xenon.
Since it is possible to obtain a color lighting unit having a life of 000 to 30,000 hours, a long-life color lighting unit can be obtained.
There are single base type and double base type for small base lamps.
The present invention may be any of them.

The single base type is advantageous in terms of simplification of the support structure for the baseless bulb and saving wiring space. The so-called wedge-based bulbs, in which one side of the base is pinched to form locking lateral grooves, are widely used in instrument panels of automobiles and are sufficiently reliable and easy to attach and detach. Since a socket is used, this can also be used.

On the other hand, the double cap type is advantageous for making the color lighting unit thinner.

By the way, in order to form the RGB light emitting element group using the incandescent lamp, a color filter is combined to obtain each light color. The color filter is
It can be formed by applying a color filter film to a glass bulb of an incandescent lamp. In addition, a color filter made of colored transparent silicone to which a pigment is added is directly attached to the glass bulb and mounted, or a gap is formed between the glass bulb and the glass bulb through an appropriate holding means to surround the glass bulb. Can be.

Next, when an incandescent light bulb is used as the light emitting element, the power consumption of the blue light emitting element is two to three times that of the red light emitting element and the green light emitting element, particularly because blue light is insufficient for the following reasons. It is good to That is, in an incandescent light bulb, the radiant energy of the blue light component is essentially small, and the spectral luminous efficiency of a person peaks at green,
The luminous efficiency for the wavelengths before and after that sharply decreases, and the luminous efficiency for blue light is relatively lower than that for green light and red light.

Therefore, in order to make the power consumption of the blue light emitting element two to three times that of the red light emitting element and the green light emitting element, the number of the blue light emitting elements is made two to three times or the rated power consumption is reduced. The same number may be used two to three times. Of course, the above compromises can be made.

As described above, in the present invention, a small amount of light is used, so that a required amount of light can be easily obtained. In addition, since the incandescent lamp emits light in a continuous spectrum and has good color rendering properties, an excellent light color can be obtained in combination with a color filter.

According to a fourth aspect of the present invention, there is provided a color lighting unit,
The color lighting unit according to any one of claims 1 to 3, wherein each of the color light emitting elements is configured such that at least a part thereof is connected in series to a power supply.

In the present invention, any color light emitting element may be used.

As described above, by using a large number of small light-emitting elements, it is possible to increase the definition of color mixture. However, in general, a small light-emitting element has a low rated voltage,
Often lower than the power supply voltage. In such a case, a step-down device may be interposed between the power supply and the light emitting element, but the size of the device is increased and the cost is increased.

On the other hand, in the present invention, since a plurality of light emitting elements are connected in series to a power supply, the power supply voltage can be directly applied without using a step-down device by adjusting the number of light emitting elements. Can be turned on.

When the light-emitting element is a small light bulb with a base, the rated voltage is generally 30 V or less, which is suitable for the present invention. Then, a plurality of small base lamps are connected in series, and the total value of their rated voltages may be equal to or slightly higher than the power supply voltage. For example, a nominally rated 100V commercial AC power supply is directly connected by connecting four series of four small base bulbs having a rated voltage of 25 to 28V or eight series of four small base bulbs having a rated voltage of 12.5 to 14V. It can be satisfactorily lit. Also,
The same idea can be applied to a nominally rated 120 V commercial AC power supply by connecting 5 to 10 lamps in series.

The color lighting unit according to the fifth aspect of the present invention
The color lighting unit according to any one of claims 1 to 3, wherein each of the color light emitting elements is configured so that at least a part thereof is connected in parallel to a power supply.

According to the present invention, a part or all of the respective color light emitting elements are connected in parallel to a power supply.

When the power supply voltage is 100 V, the rated voltage is 10
Jujube and round bulbs are commercially available as relatively small incandescent bulbs with 0 V and rated power consumption of 5 W. The present invention can be implemented using these bulbs.

Since the present invention has a configuration in which at least a part of each color light emitting element is connected in parallel to a power supply, the light emitting element is turned on by the power supply voltage, so that it is not necessary to use a step-down device. However, since the light-emitting element tends to be slightly larger than a small-capacity light bulb, it is suitable for a relatively large-sized lighting device.

The color lighting unit according to the invention of claim 6 is:
The color lighting unit according to any one of claims 1 to 5, wherein each color light emitting element is detachably mounted on the substrate via a lamp socket provided on the substrate.

The lamp socket supplies power to each color light emitting element of an RGB light emitting element group described later, and mechanically supports each color light emitting element if necessary. Therefore, what is necessary is just to use a lamp socket suitable for the base type of each color light emitting element to be used.

A plurality of lamp sockets are mounted on the board. This is convenient for arranging each color light emitting element group around a general illumination lamp. However, even in a lighting device dedicated to color illumination, by using a plurality of light emitting elements for each color and arranging light emitting elements of different colors in a mixed manner, it is possible to increase the definition of mixed colors. It is convenient to arrange relatively close to the periphery.

Further, if necessary, a lamp socket for a general illumination lamp can be provided on the substrate in addition to the lamp socket for the RGB light emitting element group. In this case, it is convenient if the substrate is formed in a disk shape.

Thus, according to the present invention, each color light emitting element can be easily mounted on the substrate, and when a failure occurs, only the light emitting element can be easily replaced with a normal one.

A lighting device according to a seventh aspect of the present invention provides a lighting device, comprising: a base; a general lighting lamp disposed directly or indirectly on the center side of the base; and a front surface of the base covering the general lighting lamp. A dome-shaped light diffusion cover made of an opalescent translucent material provided; and a light diffusion cover arranged along the periphery of the base to allow additive color mixture on the light diffusion cover surface. And a color lighting unit according to any one of (1) to (6).

The present invention is an illumination device capable of performing both general illumination and color illumination.

(Regarding the Substrate) In the present invention, the substrate functions to support the light diffusing cover, and in many cases also functions to directly or indirectly attach a general lighting lamp, and furthermore, the lighting device. Can be mounted on a ceiling or a wall, or can be adapted to a lighting device of a type mounted on a floor or a desk.

Further, the surface of the substrate facing the general illumination lamp and the color illumination unit may function as a reflector. However, a separately provided reflector may be provided on the base.

Furthermore, the shape of the base may be appropriately set according to the design and use of the lighting device, and for example, it may be a square, a circle, an oval, a figure, or the like.

(Regarding General Illumination Lamp) The “general illumination lamp” means a light source for illuminating the whole or desired part of a space such as a room to brighten the space. And the number is not limited. Therefore, an incandescent lamp, a discharge lamp, or the like can be appropriately used as a general illumination lamp. However, they are common in that they have a relatively sufficient amount of light for the above purpose.

As the incandescent lamp, a general lighting lamp, a halogen lamp and the like can be used. As a general lighting bulb, a white bulb, a krypton-containing bulb, or the like can be used.

As the discharge lamp, a fluorescent lamp, a high-intensity discharge lamp, or the like can be used.

As the fluorescent lamp, a straight tube fluorescent lamp,
An annular fluorescent lamp, a compact fluorescent lamp, or the like can be used.

As a high-intensity discharge lamp, a metal halide lamp, a high-pressure sodium lamp, a mercury lamp, or the like can be used.

Next, being disposed “on the center side with respect to the base” means that it is on the center side with respect to the base in relation to the RGB light emitting element group. . Therefore, it does not necessarily have to be a geometric center.

The expression "directly or indirectly disposed" with respect to the base includes both a state directly attached to the base and a state supported by the base as a result. "As a result, the base is supported" means, for example, a structure in which a reflector is mounted on the base, and the reflector supports a general lighting lamp, or a frame that can be freely opened and closed with respect to the base. And a structure that supports the light diffusion cover by the frame and also supports a general illumination lamp.

(Regarding Light Diffusion Cover) The light diffusion cover accommodates a general illumination lamp and a group of RGB light emitting elements between them in cooperation with the base. Therefore, the light emitted from these lamps basically passes through the light diffusion cover and illuminates the illuminated space or the illuminated surface.

Further, since the light diffusion cover is made of a milky white translucent material, light transmitted through the light diffusion cover is diffused when transmitted through the light diffusion cover. When different color lights are present at the same time, they are additively mixed by the light diffusion cover. The “milky translucent material” does not limit the material, but merely defines the optical characteristics of the material. That is, it is necessary that the material be light-diffusing and not be significantly colored. This is because if the color is markedly colored, the light is colored when passing through the light diffusion cover, and the color mixture by each color light emitting element is hindered. For this reason, coloring that does not substantially impede color illumination is allowed.

Further, the material of the light diffusion cover is not limited as described above, but for example, a synthetic resin or glass can be used.

In the present invention, the expression that the light-diffusing cover is “dome-shaped” does not mean in a strict sense, but includes a slightly swelled one and a spherical or cylindrical shape. Including those that swell.

The shape of the light diffusion cover may be adapted to the shape of the base or may be different from the base.

(Regarding Color Illumination Unit) A general illumination lamp means that the color illumination unit is "disposed along the periphery of the base so that the respective emission colors allow additive color mixture on the light diffusion cover surface". This means that the color lighting unit is located closer to the periphery of the light diffusion cover, but is separated from the light diffusion cover to the extent that additive color mixing is obtained on the light diffusion surface. If the color lighting unit is too close to the light diffusion cover, the desired additive color mixture will not be obtained.

Further, the color lighting unit is provided by being attached to the base by an appropriate means, but a preferred means is to attach via the substrate of the color lighting unit. In this case, the substrate may be mounted on the top surface of the base, that is, the surface exposed on the light diffusion cover side, or may be mounted inside the base, that is, in a space not exposed on the light diffusion cover side. In the latter case, it is necessary to form holes or gaps through which the light emitting elements of each color are inserted in the base.

Further, by selectively lighting each color light emitting element of the color lighting unit and further controlling or dimming the lighting level, desired color illumination can be performed. It is preferable to provide a control means for dimming or blinking each time. The control means can be attached to the lighting device, but may be provided separately if necessary.

(Regarding the Operation of the Present Invention) The present invention has the above-described configuration, and thus has the following operation.

(1) General lighting and color lighting functions are provided.

By lighting the general lighting lamp,
General lighting can be performed. Similarly, by operating the color lighting unit, color lighting can be performed. In color lighting, red light emission, green light emission, and blue light emission can be individually selected and performed, and by simultaneously lighting a plurality of light emitting elements of any colors, the lighting level at that time can be appropriately adjusted. By controlling, it is possible to create various color lights by color mixture.

(2) The color lighting unit hardly interferes with the general lighting function.

In general illumination, the main part of the light diffusion cover is designed so as to determine the light distribution characteristics. For example, in the case of a ceiling lighting fixture, direct illuminance is regarded as important. Further, in a desk lamp provided with a light diffusion cover of, for example, a substantially spherical shape or a hemispherical shape, which is placed on a table and illuminates the surroundings, a light distribution in a wide angle range from the side to the top is emphasized. .

On the other hand, in the color illumination according to the present invention, since the respective color light emitting elements of the color illumination unit are relatively small and are disposed along the periphery of the light diffusion cover, the color illumination unit can be used for general illumination. There can be no or very little interference.

(3) Color illumination can be effectively performed.

In the case of the diffuse transmission type color illumination, unlike the general illumination of the same type, it is often enjoyed to look directly at the color light emitting portion. That is, the user enjoys the color illumination mainly by looking at the portion of the light diffusion cover which is shining by the color light.

On the other hand, in the present invention, since the color lighting unit is disposed relatively around the light diffusion cover, the brightness of the color light at the periphery of the light diffusion cover is high, and from the periphery to the center. It is easy to form a distribution in which the luminance gradually decreases gradually toward. In such a luminance distribution, a large color illumination effect can be obtained with a small amount of color light.

(4) It is possible to provide color lighting by attaching to lighting equipment for general lighting.

In many lighting fixtures for general lighting,
There is space around the base. In the present invention, by arranging the color lighting unit using this space, a lighting fixture having a color lighting function can be easily obtained. In addition, instead of lighting equipment dedicated to general lighting, for optimal general lighting and color lighting,
The present invention also encompasses such a lighting device, since even a specially designed lighting device exhibits many effects of the present invention.

According to an eighth aspect of the present invention, in the lighting device according to the seventh aspect, the color lighting unit is disposed at a position retracted from the general lighting lamp toward the base.

The positions of the general illumination lamps are determined with reference to the respective light emission centers. On the other hand, in a color lighting unit, the tip of a color filter is used as a reference.

Thus, in the present invention, the interference of the color lighting unit with general lighting is further reduced by disposing the color lighting unit at a position retracted from the general lighting lamp toward the base.

A lighting device according to a ninth aspect of the present invention is the lighting device according to the seventh or eighth aspect, characterized in that dimming means for dimming the color illumination unit for each color light emitting element is provided on the base. And

The light control means is preferably capable of continuous light control, but may be configured to perform stepwise light control if necessary. The dimming operation may be performed manually, or the dimming control may be automatically performed according to a predetermined program. Of course, any of the above-described configurations may be provided, and the configuration may be such that functions can be selected and used.

In the case of manual operation, the light control means
The operation is facilitated by exposing the operation unit to the outside of the base.
In this case, when the lighting device is mounted at a relatively high position such as a ceiling-mounted type, it is desirable that the operation unit be suspended so as to be easily operated from below.

Thus, in the present invention, since the dimming means is provided on the base, an operation such as changing the color illumination can be arbitrarily and easily performed simply by connecting the lighting device to the power supply. be able to.

The lighting device according to the tenth aspect of the present invention provides the lighting device according to the seventh aspect.
10. The lighting device according to any one of the items 9 to 9, further comprising a switching means for selectively energizing the general lighting lamp and the color lighting unit.

When the general illumination lamp and the color illumination unit are simultaneously energized or lit, the amount of heat generated increases, the temperature of the illumination device increases sharply, and the temperature limit is easily exceeded. Also, the lighting effect becomes incomplete.

In the present invention, since one of the general illumination lamp and the color illumination unit is selected and energized by the switching means, the above-described inconvenience does not occur.

[0096]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front sectional view showing a first embodiment of the color lighting unit of the present invention.

FIG. 2 is also a plan view.

FIG. 3 is an enlarged partial sectional front view of the light emitting element and the lamp socket.

FIG. 4 is an enlarged partial cross-sectional side view.

FIG. 5 is an enlarged front view of the small base lamp similarly.

FIG. 6 is an enlarged side view of the same.

In each figure, 1 is a substrate, 2 is a group of RGB light emitting elements, and 3 is a lamp socket.

The substrate 1 has a printed wiring (not shown) as an electric wiring means in the present invention formed on the back surface, has a centrally provided lamp socket insertion hole 1a, and a lamp socket 3 for mounting the lamp socket 3. It has a disk shape with a positioning hole and a terminal insertion hole (both not shown).

As the printed wiring on the back surface of the substrate 1, a printed wiring land is formed around the terminal insertion hole 1a as an input terminal for each color light emitting element R, G, B and a wiring to each color light emitting element connected thereto. I have. The wiring method will be clarified in the description of the embodiment of the lighting device of the present invention.

The RGB light-emitting element group 2 includes four red light-emitting elements R, green light-emitting elements G, and eight blue light-emitting elements B, each of which is arranged in two rows in a ring as shown in FIG. . That is, in the outer row, four light-emitting elements R, G, and B of four colors are alternately arranged adjacent to each other. In the inner row, four blue light emitting elements B are arranged at 90 ° intervals. Thereby, four sets of units of each color light emitting element R, G, B are formed in the circumferential direction of the outer row. In addition, the blue light emitting elements B in the inner row and the red light emitting elements R and the green light emitting elements G in the outer row form four sets of units of each color light emitting element R, G, B arranged at the apex of the triangle. As a result, good additive color mixture with high definition and less unevenness can be obtained.

Each of the color light emitting elements R, G and B comprises a small baseless bulb 2a, a filter holder 2b and a color filter 2c.

As shown in FIGS. 5 and 6, the small base bulb 2a has a glass bulb 2a1 and an external lead wire 2a.
2, consisting of an internal lead wire 2a3, a glass bead 2a4, a tungsten filament 2a5, and an anchor wire 2a6.

The glass bulb 2a1 is of a single sealing type having a wedge-based pinch seal portion 2a11.

[0110] The pair of external lead wires 2a2 is led out through the pinch seal portion 2a11 of the glass bulb 2a1 in an airtight manner, and is bent out into a U-shape to form a pinch seal portion 2a.
a11 are attached in a diagonal relationship to both surfaces. Note that a pair of locking lateral grooves g is formed on both surfaces of the pinch seal portion 2a11.

A pair of the inner lead wires 2a3 is connected to the outer lead wire 2a2, and is introduced from the pinch seal portion 2a11 into the glass bulb 2a1.

The glass bead 2a4 is connected to the internal lead wire 2a.
3 is fixed in a predetermined positional relationship, and the base end of the anchor wire 2a6 is fixed.

The tungsten filament 2a5 has a C-
It is 2V type, and both ends are connected to the tip of the internal lead wire 2a3.

[0114] The distal end of the anchor wire 2a6 is suspended in the middle of the tungsten wire 2a5.

The filter holder 2b is used to form a gap between the glass bulb 2a1 and the color filter 2c when disposing the color filter 2c around the light emitting portion of the small base lamp 2a. That is,
The filter holder 2b is made of synthetic resin,
It has a ring portion 2b1 and a support leg 2b2.

The ring portion 2b1 is locked on the outer periphery of the lamp socket 3 by the soft elasticity of the constituent material. A positioning step 2b11 for the color filter 2c is formed at the lower end of the outer periphery of the ring 2b1.

The four support legs 2b2 are protruded from the upper end of the ring portion 2b1 at intervals of 90 ° around the small base lamp 2 at an interval. An insertion guide 2b21 for the color filter 2c is formed at the tip of the support leg, and a stopper step 2b22 for the lamp socket 3 is formed inside the lower end.

The color filter 2c is formed by molding a transparent colored silicone resin into a cap.

The lamp socket 3 has a socket body 3a and a pair of contacts (not shown).

The socket body 3a is made of an insulating flat 2
Split type with insertion opening on the front and position regulating projection 3 on the back
a1 and a collar 3a2, respectively,
3 and are integrated.

The pair of contacts are sandwiched in the socket body 3a, and the terminals 3b of the contacts protrude from the back surface.

Then, the light emitting elements R, G,
To mount B, the lamp socket 3 is first mounted.
For this purpose, the position regulating protrusion 3a1 of the lamp socket 3 is inserted into the positioning hole formed in the substrate, and the terminal 3b is inserted into the terminal insertion hole, and the printed wiring lands on the rear surface are soldered to the terminals. , Lamp socket 3
To the input terminal as required.

Next, the small base bulb 2 a is mounted on the lamp socket 3. For this purpose, when the pinch seal portion 2a11 of the small base lamp 2a is inserted into the insertion opening of the lamp socket 3, the external lead wire 2a2 is pressed against the contact housed in the socket body 3a, and the locking member is used. The lateral groove g is locked by the contact, and the mounting of the small base bulb 2a on the lamp socket 3 is completed.

After the small base bulb 2a is mounted on the lamp socket 3, the filter holder 2b is mounted on the lamp socket 3. For this purpose, the ring portion 2b1 of the filter holder 2b is pressed into the lamp socket 3.
Then, the positioning step 2b11 is locked on the upper end of the socket body 3a, and the mounting of the filter holder 2b on the lamp socket 3 is completed. The filter holder 2b does not undesirably fall out of the lamp socket 3 even if some vibration is applied due to the soft elasticity of the ring portion 2b1.

Finally, the color filter 2c is mounted on the filter holder 2b. To this end, the open ends of the color filter 2c are inserted so that the four support legs 2b2 of the filter holder 2b enter the inside of the color filter 2c. When the opening end of the color filter 2c contacts the stopper step 2b22 of the ring 2b1,
The attachment of the color filter 2c to the filter holder 2c is completed. The color filter 2c has a ring portion 2b1 of the filter holder 2b due to its soft elasticity.
It is surely supported.

When the color filter 2c is attached to the filter holder 2b, an appropriate gap is formed between the color filter 2c and the lampless lamp 2a and between the color filter 2c and the lamp socket 3. The deterioration of the color filter 2c due to the generated heat can be avoided.

FIG. 7 is a front sectional view showing a first embodiment of the lighting device of the present invention.

FIG. 8 is a plan view showing a state where the light diffusion cover is removed.

This embodiment is a stand-type lighting device using the first embodiment of the color lighting unit of the present invention shown in FIG. 1 to FIG.

Therefore, in each drawing, the same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.

In the figure, 11 is a base, 12 is a color illumination unit, 13 is a light diffusion cover, 14 is a general illumination lamp socket, 15 is a general illumination lamp, 16 is dimming means, 17 is switching means, and 18 is switching means. Power cord.

The base 11 is formed in a dish shape by pressing a metal plate. The base 11 further includes a color lighting unit mounting foot 11a, a decorative screw 11b for mounting the light diffusion cover 13, a general lighting lamp socket mounting base 11c, and the like.

The color lighting unit 12 is the color lighting unit shown in FIGS. 1 to 6, and is attached to the base 11 via the attachment feet 11a.

The light diffusing cover 13 is formed by forming glass into a hemispherical shape and roughening the surface to impart light diffusing properties, and has a neck portion 13a at an open end.

In order to attach the light diffusion cover 13 to the base 11, the neck portion 13a of the light diffusion cover 13 is inserted inside the opening end of the base 11, and the decorative screw 11 is inserted from the side of the base 11.
b may be screwed in and pressed against the neck 13a.

The general lighting lamp socket 14 is E17
It is formed of a shaped socket, is mounted on a general lighting lamp socket mounting base 11c of the base 11, and protrudes upward from the color lighting unit 12.

The general lighting lamp 15 is composed of a 60 W krypton-containing light bulb, and includes a general lighting lamp socket 14.
Is mounted on the color lighting unit 12
Are located above the color filters 2c of the respective color light emitting elements R, G, B.

The light control means 16 includes a light control circuit unit 16a.
And a variable resistor 16b as a main element, and a color 16c,
It is mounted at a suitable distance from the board 1 by bolts 16d and nuts 16e.

The variable resistor 16b includes a light emitting element R for each color.
G and B are provided so that light can be independently adjusted for each emission color, and are provided at appropriate intervals on the side surface of the base 11 in order to enable manual operation from the outside of the base 11.

The switching means 17 selectively connects the general illumination lamp 15 and the color illumination unit 12 to a power source. In order to enable operation from outside the base 11, a variable resistor on the side of the base is used. 16b. The switching means 17 turns off the circuit when the tilting handle is in the neutral position. For example, when the tilting handle is tilted to the right, the general lighting lamp 15 is connected to the power source, and when the tilting handle is tilted to the left, the RGB light emitting element group 2 is turned on. Connect to

The power cord 18 is introduced from the side of the base 11 through the cord protector 18a into the inside of the base, and is connected to required parts.

When the switching means 17 is operated to connect the general illumination lamp 15 to a power source, the light emission is diffused when passing through the light diffusion cover 13 to illuminate the light diffusion cover 13 and illuminate the surroundings. Light the space softly. During that time, the color lighting unit 12 is located at a position retracted from the general lighting lamp 15 and does not interfere with general lighting.

Next, when the switching means 17 is operated to connect the color lighting unit 12 to a power source, the general lighting lamp 15 is turned off and the color lighting unit 12 operates. The color lighting unit 12 is capable of dimming independently for each color light emitting element R, G, B. For example, if only the red light emitting element R is turned on, red light is generated and the light diffusion cover 13 is generated. And is diffused, so that the light diffusion cover 1
3 turns red, and the surrounding space is illuminated red.

Similarly, by operating the variable resistor of the light control means 16, green light emission and blue light emission can be performed.

Further, when light-emitting elements of arbitrary plural colors of the respective color light-emitting elements R, G, and B are simultaneously generated, the color mixture is diffused when each color light is transmitted through the light diffusion cover 13, so that additive color mixing is performed. Therefore, various intermediate colors can be generated on the surface of the light diffusion cover 13 and the surroundings can be illuminated with the intermediate colors.

For the above color mixing, the general illumination lamp 15 is used.
Are located in the center and are colorless, so they do not interfere with color illumination.

Further, by operating the light control means 16, the RG
When the lighting level of the B light emitting element group 2 is reduced, it can be used as a nightlight or a security light. Moreover, since the desired color light can be obtained, it is possible to sleep comfortably by setting the night light of the color light according to the user's preference. In addition, there have been various demands for the brightness of the nightlight from the past, but it is possible to meet any brightness demand by adjusting the dimming level.

When the switching means 17 is operated to the neutral position, all the lights can be turned off.

FIG. 9 is a circuit diagram showing an electric circuit in the first embodiment of the lighting device of the present invention.

In the figure, the same parts as those in FIGS. 7 and 8 are denoted by the same reference numerals, and the description is omitted.

The RGB light emitting element group 2 includes a red light emitting element R and a green light emitting element G, each of which has four light emitting elements connected in series. The blue light-emitting element B is formed by connecting two series-connected circuits of four lamps in parallel.

The dimming means 16 is composed of a dimming element DR for red light emitting element, a dimming element DG for green light emitting element and a dimming element DB for blue light emitting element. Each dimming element DR, DG and DB is independent. Can be operated. Each dimming element D
One end of R, DG, and DB is a common terminal, and the other end is connected to one end of a series circuit of each color light emitting element.

The switching means 17 includes a first fixed contact 17a connected to one end of the general illumination lamp 15, a second fixed contact 17b connected to a common terminal of the dimming means 16, and a movable contact 1
7c and an off position 17d.

Reference numeral 19 denotes an AC power supply, one of which is a switching means 1
7, and the other pole is connected to the other end of the general lighting lamp 15 and the other end of the series circuit of the color light emitting elements R, G, and B of the color lighting unit 12.

The movable contact 17c of the switching means 17
Is connected to the first fixed contact 17a, the AC power supply voltage is applied to the general illumination lamp 15 as it is, and the general illumination lamp 15 is lit to perform general illumination.

Next, the movable contact 17c is connected to the second fixed contact 1
7b, an AC voltage is applied to the color lighting unit 12 via the light control means 16. Since a low voltage of 1/4 of the AC power supply voltage is applied to one light emitting element,
There is no need to use a step-down device.

FIG. 10 is a conceptual diagram showing a second embodiment of the color lighting unit of the present invention.

FIG. 11 is an enlarged plan view of the quarter body.

FIG. 12 is an enlarged front view of the small base bulb and the lamp socket.

FIG. 13 is an enlarged plan view.

FIG. 14 is an enlarged front view of the small baseless light bulb.

In each figure, the same parts as those in FIGS. 1 to 6 are denoted by the same reference numerals, and description thereof is omitted.

The present embodiment is different from the first embodiment in that the substrate 1 is divided into four parts and a double-ended small baseless bulb 2a is used.

The substrate 1 has a large hole formed in the center,
Four 1/4 divided bodies 1b divided every 90 ° are used by being aligned on the circumference. Eight lamp sockets 3 and a small base lamp 2a are mounted on each quarter body 1b.

The small-capacity miniature bulb 2a is a double cap, and a pair of external lead wires 2a2 led out from a pair of pinch seals 2a11 formed at both ends of the glass bulb 2a1 are folded back into a U-shape and pinched again. It is buried in the seal portion 2a11.

The lamp socket 3 includes a pair of upright portions 3a4 and a pair of upright portions 3a4 whose socket bodies 3a are opposed to each other.
And a circular arc-shaped heat shield / reflector 3a6 arranged along the surface of the bridge 3a5. In addition, a pair of contacts (not shown) includes the upright portion 3.
a4.

A passage groove 3a41 of the pinch seal portion 2a11 and a passage groove 3a42 of the external lead wire 2a2 are formed on the upper surface of each upright portion 3a4, and a pinch communicating with the passage groove 3a41 of the pinch seal portion 2a11 is formed on the opposing side surface. A slit 3a43 for passing the seal portion 2a11 is formed.

The heat shield / reflector 3a6 is made of an aluminum plate.

In order to mount the small lamp 2a on the lamp socket 3, the external lead wires 2a2 at both ends of the small lamp 2a are inserted into the passage groove 3a42, and the pinch seal portion 2a.
11 are pushed into the passage grooves 2a41, respectively. Then, as the pinch seal portion 2a11 moves in the slit 3a43, the external lead wire 2a2 comes into contact with the contact housed inside the upright portion 3a4, and mounting is performed.

As the color filter (not shown), a cylindrical filter made of transparent colored silicone rubber is mounted on the glass bulb 1a1.

FIG. 15 is a front view in central section showing a second embodiment of the lighting apparatus of the present invention.

FIG. 16 is a layout diagram of the lamp.

In each figure, the same parts as those in FIGS. 7 and 8 are denoted by the same reference numerals, and description thereof will be omitted.

This embodiment uses the second embodiment of the color lighting unit of the present invention shown in FIGS. 9 to 14, and uses a pair of annular fluorescent lamps 15A and 15B having different diameters as general lighting lamps. They differ in that they constitute a ceiling lighting device.

That is, the annular fluorescent lamps 15A and 15A
5B are arranged concentrically and the annular fluorescent lamps 15A, 15A
A reflection plate 21 is provided between B and the base 11.

In the portion covered by the reflection plate 21, the base 11 is provided with a high-frequency lighting device 22 for the annular fluorescent lamps 15A and 15B.

The light diffusion cover 13 has a shallow dome shape, and a decorative frame 13b is mounted on the periphery thereof.

In each of the color light emitting elements R, G, B, the lamp axis is radially arranged outside the ring-shaped fluorescent lamps 15A, 15B. Red light emitting element R and green light emitting element G
However, 16 light emitting elements B are used for 8 lights. The ring-shaped fluorescent lamp 1 is positioned such that the blue light emitting element B is positioned on both sides of the red light emitting element R and the green light emitting element G.
They are arranged in a ring around 5A and 15B.

Although not shown, the switching means 17 is provided in the base 11, and the annular fluorescent lamps 15A and 15B serving as general lighting lamps and the color lighting unit 12 are provided.
It also allows for alternate lighting of nightlights.

FIG. 17 is a circuit diagram showing an electric circuit in a lighting device according to a second embodiment of the present invention.

In the figure, the same parts as those in FIG. 9 are denoted by the same reference numerals, and description thereof will be omitted.

The high frequency lighting device 22 includes an inverter 22
a, a current limiting impedance 22b and a DC cut capacitor 22c.

A pair of the current limiting impedance 22b and the DC cut capacitor 22c is provided, connected in series with the annular fluorescent lamps 15A and 15B, and connected to the output terminal of the inverter 22a.

The inverter 22a has an input terminal for all-light lighting and an input terminal for dimming lighting.

The switching means 17 further comprises a third fixed contact 1
7e and a fourth fixed contact 17f are added. The first fixed contact 17a of the switching means 17 is connected to an all-light lighting input terminal of the inverter 22a. The third fixed contact 17e is connected to an input terminal for dimming lighting. The fourth fixed contact 17f is connected to the night light 23.
Connected to.

The red light emitting element R and the green light emitting element G
Two series circuits of four lamps are connected in parallel. The blue light emitting element B has four series circuits of four lamps connected in parallel.

The light control means 16 is provided separately from the lighting device.

FIG. 18 is a color diagram showing a third embodiment of the lighting device of the present invention.

In the figure, the same parts as those in FIG. 17 are denoted by the same reference numerals, and description thereof will be omitted.

In the present embodiment, the night light 23 in FIG.
Is removed.

Therefore, according to the present embodiment, a four-stage pull switch is used in the same manner as a general lighting fixture of this type.
All-light lighting, dimming lighting, color lighting, and nightlight lighting can be sequentially switched. Furthermore, since the user can turn on the nightlight with the brightness and color light desired by the user, it is possible to meet various demands.

FIG. 19 is a front view in central section showing a fourth embodiment of the lighting device of the present invention.

In the figure, the same parts as those in FIG. 15 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, the light control means 16 is provided in the lighting device.
The difference is that it is built-in and easy to operate manually from outside.

That is, the light control means 16 includes the variable resistor 1
6b is separated from the main body and protruded to the side of the base 11, and the operating rod 16b2 is hung downward via the universal joint 16b1.

In this embodiment, since the universal joint 16b1 is interposed between the variable resistor 16b and the operating rod 16b2, the universal joint 16b1 breaks even when a lateral force acts on the operating rod 162. And the variable resistor 16b does not fail. Also, regardless of the posture of the lighting device, the operation rod 16
b2 depends on its own weight.

Therefore, the light control can be performed by pinching and turning the operation rod 16b2.

By displaying the same color as the emission color of the light emitting element related to the lower end of the operation rod 16b2, or by installing a pilot lamp that generates similar colors.
Erroneous operation can be prevented.

FIG. 20 is a front sectional view showing a fifth embodiment of the lighting apparatus of the present invention.

In the figure, the same parts as those in FIG. 7 are denoted by the same reference numerals, and description thereof will be omitted.

The present embodiment is different in that a straight tube fluorescent lamp is used as the general illumination lamp 15.

That is, the color lighting units 12 are arranged in a rectangular ring shape so as to surround the general lighting lamp 15.

[0203]

According to the first to sixth aspects of the present invention, an RGB light emitting element group including a plurality of red light emitting elements, a plurality of green light emitting elements, and a plurality of blue light emitting elements is formed on a substrate by mixing different light emitting colors. By arranging and configuring by electric wiring means so that each color light emitting element can be individually connected to a power source so as to be controllable, mounting of the RGB light emitting element group is simplified, and incorporation into a lighting device requires a substrate. In addition, it is possible to provide a color lighting unit which can be easily performed, and has high definition of color mixture, and can obtain favorable additive color mixture.

According to the second aspect of the present invention, the electric wiring means is formed integrally with the substrate in advance,
Electrical support and mechanical support of the RGB light emitting element group can be performed together, and a color lighting unit that is easy to handle can be provided.

According to the third aspect of the present invention, in addition to the fact that each light emitting element is constituted by a small base lamp with a color filter combined with a color filter, it is possible to easily obtain a required amount of light with a long service life, And a color lighting unit having a different light color can be provided.

According to the fourth aspect of the present invention, in addition, since at least a part of each color light emitting element is configured to be connected in series to a power supply, a small voltage light emitting element can be used. Since the power supply voltage can be applied directly without using a step-down device, the lighting can be performed, so that a small and inexpensive color lighting unit can be provided.

According to the fifth aspect of the present invention, in addition, since at least a part of each color light emitting element is configured to be connected in parallel to the power supply, it is suitable for a relatively large-sized lighting device, and is suitable for step-down. A color lighting unit which does not require a device can be provided.

According to the sixth aspect of the present invention, since each color light emitting element is detachably mounted on the substrate via the lamp socket provided on the substrate, it is easy to mount each color light emitting element on the substrate. In addition, it is possible to provide a color lighting unit that can easily replace only a failed light emitting element with a normal one.

According to each of the seventh to tenth aspects of the present invention, the color illumination unit of the first to sixth aspects is disposed relatively along the periphery of the light diffusion cover, and the general illumination lamp and the color illumination unit are provided. By arranging a dome-shaped light diffusion cover made of a translucent milky translucent material, general illumination and color illumination can be selected in a state in which both are hardly interfered with each other. Since the illumination device is disposed relatively near the periphery, it is possible to provide an illumination device that performs effective color illumination even if the light intensity of color illumination is smaller than that of general illumination.

According to the eighth aspect of the present invention, the color illumination unit is disposed at a position retracted from the general illumination lamp toward the base, so that the color illumination unit has less interference with the general illumination. An apparatus can be provided.

According to the ninth aspect of the present invention, in addition to the above, the dimming means for dimming the color illuminating unit for each color light emitting element is provided on the base. It is possible to provide an illuminating device capable of freely changing.

According to the tenth aspect of the present invention, in addition to the provision of the switching means for selectively energizing the general lighting lamp and the color lighting unit, the general lighting and the color can be controlled by operating the switching means. A lighting device that easily selects lighting can be provided.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a first embodiment of a color lighting unit of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged partial cross-sectional front view of the same light emitting element and lamp socket.

FIG. 4 is an enlarged side view of the same.

FIG. 5 is an enlarged front view of the small-capacity small light bulb.

FIG. 6 is an enlarged side view of the same.

FIG. 7 is a front sectional view showing the first embodiment of the lighting device of the present invention.

FIG. 8 is a plan view showing a state in which the light diffusion cover is also removed.

FIG. 9 is a circuit diagram showing an electric circuit in the first embodiment of the lighting device of the present invention.

FIG. 10 is a conceptual diagram showing a second embodiment of the color lighting unit of the present invention.

FIG. 11 is an enlarged plan view of the same quarter body.

FIG. 12 is an enlarged front view of a small lamp and a lamp socket.

FIG. 13 is an enlarged plan view of the same.

FIG. 14 is an enlarged front view of the same small-capacity light bulb.

FIG. 15 is a front view in central section showing a second embodiment of the lighting device of the present invention.

FIG. 16 is a layout diagram of the same lamp.

FIG. 17 is a circuit diagram showing an electric circuit in a lighting device according to a second embodiment of the present invention.

FIG. 18 is a circuit diagram showing a third embodiment of the lighting device of the present invention.

FIG. 19 is a front view in a central section showing a fourth embodiment of the lighting device of the present invention.

FIG. 20 is a front sectional view showing a fifth embodiment of the lighting device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Substrate 2 ... RGB light emitting element group 2c ... Color filter 3 ... Lamp socket 11 ... Base 11a ... Color lighting unit mounting foot 11b ... Decorative screw 11c ... General lighting lamp mounting base 12 ... Color lighting unit 13 ... Light diffusion cover 13a ... Neck part 14 ... Lamp socket for general lighting 15 ... Lamp for general lighting 16 ... Dimming means 16a ... Dimming circuit unit 16c ... Color 16d ... Bolt 16e ... Nut 17 ... Switching means

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hideo Moriyama 2-5-10 Nakanobu, Shinagawa-ku, Tokyo Moriyama Sangyo Co., Ltd. F-term (reference) 3K073 AA75 AB05 AB07 CA01 CG28 CG42 CJ14 CJ16 CJ17 CJ18 CK01 CK02

Claims (10)

[Claims] An RGB light emitting element group including a plurality of red light emitting elements, a green light emitting element, and a blue light emitting element, each of which includes a plurality of red light emitting elements, a green light emitting element, and a blue light emitting element;
Electrical wiring means configured to connect the light emitting element group to a power supply so as to be individually controllable for each color light emitting element. 2. The color lighting unit according to claim 1, wherein the electric wiring means is formed integrally with the substrate in advance. 3. The color lighting unit according to claim 1, wherein each color light emitting element is constituted by a small base lamp having a combination of color filters. 4. The color lighting unit according to claim 1, wherein at least a part of each color light emitting element is configured to be connected in series to a power supply. 5. The color lighting unit according to claim 1, wherein at least a part of each color light emitting element is configured to be connected in parallel to a power supply. 6. The color lighting unit according to claim 1, wherein each color light emitting element is detachably mounted on the substrate via a lamp socket provided on the substrate. 7. A general lighting lamp disposed directly or indirectly on the center side of the substrate with respect to the substrate; and a milky light translucent disposed on the front surface of the substrate so as to cover the general lighting lamp. A dome-shaped light-diffusing cover made of a material; and a color according to any one of claims 1 to 6, wherein the respective luminescent colors are arranged along the periphery of the substrate so as to allow additive color mixture on the light-diffusing cover surface. A lighting unit; and a lighting unit. 8. The lighting device according to claim 7, wherein the color lighting unit is disposed at a position retracted from the general lighting lamp toward the base. 9. The lighting device according to claim 7, wherein a dimming means for dimming the color lighting unit for each color light emitting element is provided on the base. 10. The lighting device according to claim 7, further comprising a switching unit for selectively energizing the general lighting lamp and the color lighting unit.