JP2000323097A - Fluorescent lamp and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluorescent lamp and luminaire emitting white light and having excellent interior decorativeness, by providing a thin film made of a pigment showing a prescribed object color between a glass tube of the lamp, and a luminescent layer formed on the inner face of the glass tube, made of a mixed phosphor mainly consisting of plural phosphor and emitting visible light. SOLUTION: In this fluorescent lamp, a thin film 3 is formed by applying pigment selected from cobalt violet, cobalt green, titanium yellow, a red iron oxide, copper chrome black and the like together with a polymer (a binder), then drying. At that time, aluminum oxide fine particles, yttrium oxide particles or the like can be added. Thereby, the fluorescent lamp can emit illumination light having a correlated color temperature of 2700-7500 K, and a chromaticity point in a chromaticity deviation range of -0.005 to +0.005 from a black body locus on the CIE1960uv chromaticity diagram.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fluorescent lamp and a lighting fixture. More specifically, the present invention relates to a fluorescent lamp and a lighting fixture having high interior properties and easy to use indoors.

[0002]

2. Description of the Related Art At present, there are various kinds of fluorescent lamps used for general lighting, and they are widely used for house lighting, indoor facility lighting and the like. In this fluorescent lamp, illumination light is created by a process of exciting and emitting light from a phosphor applied to the inner surface of a glass tube with ultraviolet light generated by exciting mercury sealed in the lamp.

[0003] Usually, when the glass tube of the lamp is viewed from the outside, it usually has a white color. This is because a phosphor used in a general fluorescent lamp has a white color, and looks external because external light is reflected without absorption in a specific visible region.

[0004]

In houses and indoor facilities where such fluorescent lamps are frequently used, it is necessary to provide the required brightness so that the operation and work can be performed without any trouble in the space. Is the purpose. For that purpose, it is necessary to radiate white light of sufficient brightness. Generally, a phosphor having a high-efficiency blue, green, and red rare earth ion as a luminescent center is combined with a correlated color temperature of 2,700.
７7500K, and the chromaticity point is −0.005 to 0.00 on the CIE1960uv chromaticity diagram.
A three-wavelength band fluorescent lamp that emits illumination light having a chromaticity range of 5 is often used.

[0005] However, in recent years, in particular, some rooms of houses and some of indoor facilities have, for example, been set to have a calm atmosphere,
Attempts to intentionally create interiors and the like based on a certain concept, such as creating a classy atmosphere, are often receiving attention. When such an effect is considered, a lamp and a lighting fixture equipped with the lamp must be naturally considered as one of the decorative elements constituting the space.

In view of the above, when a conventional general fluorescent lamp is considered, the appearance of the fluorescent lamp is almost uniformly white, and is not necessarily suitable for producing a space.

On the other hand, in order to emphasize the interior characteristics of the lamp, a fluorescent material that emits light in a specific wavelength range is used for blue, green,
It may be possible to use a fluorescent lamp that is designed to emit a specific color light such as red, which is not white.However, in this case, since the illumination light is not white light, the visibility of the object, which is the primary purpose of illumination, is reduced. It significantly lowers and hinders action and work.

On the other hand, a plastic film or the like colored in a color outside the glass tube of the fluorescent lamp is covered,
Some have enhanced interiors. However,
This method has the drawback that the production is troublesome and the cost is high.

The present invention solves the above-mentioned conventional problems, so that it can be manufactured in the same manner as a general fluorescent lamp without any major manufacturing change, and can operate and work without any trouble in the space. The present invention provides a fluorescent lamp that emits white light without impairing the original function of lighting, and a fluorescent lamp with improved interior characteristics and a lighting fixture using the fluorescent lamp.

[0010]

In order to achieve the above object, a fluorescent lamp according to the present invention has a light emitting layer made of a mixed phosphor containing a plurality of phosphors as main components on an inner surface of a glass tube, and has a correlated color temperature. Is 2700-7500K and the chromaticity point is CIE
On the 1960uv chromaticity diagram, the chromaticity deviation from the blackbody locus is-
A fluorescent lamp which emits illumination light having a chromaticity range of 0.005 to 0.005, wherein a thin film made of a pigment exhibiting a predetermined object color is provided between the glass tube and the light emitting layer. Features. This is a fluorescent lamp that emits white light and can be manufactured in the same manner as a general fluorescent lamp, and a fluorescent lamp with a high interior property, which is colored in a specific color, can be obtained.

In the above-described fluorescent lamp of the present invention, it is preferable that at least one oxide selected from aluminum oxide and yttrium oxide is further mixed with a thin film made of a pigment exhibiting a predetermined object color. This is a fluorescent lamp that emits white light and can be manufactured in the same manner as a general fluorescent lamp, and a fluorescent lamp with a high interior property, which is colored in a specific color, can be obtained.

In the fluorescent lamp according to the present invention,
It is preferable that at least one oxide selected from aluminum oxide and yttrium oxide is mixed in the range of 20 to 150 parts by weight with respect to 100 parts by weight of the pigment exhibiting a predetermined object color.

In the fluorescent lamp according to the present invention,
Pigment exhibiting a predetermined object color is cobalt violet,
Cobalt blue, cobalt aluminum chrome blue,
It is preferably at least one pigment selected from ultramarine blue, cobalt green, cobalt chrome green, titanium cobalt green, titanium yellow, titanium barium nickel yellow, red iron, lead tan, copper chrome black, and cobalt ferrite black.

In the fluorescent lamp according to the present invention,
The light emitting layer has a wavelength in the blue region of 400 to 470 nm and a wavelength of 4
90 to 550 nm green region, wavelength 600 to 670 nm
It is preferable to emit a combination of light emission in the red region as main light emission. This makes it possible to obtain a fluorescent lamp that emits white light while the lamp itself is colored in a specific color.

In the fluorescent lamp according to the present invention,
It is preferable that the light emitting layer is made of a mixed phosphor containing the following components A to C as main components. A. B. at least one type of a divalent europium-activated blue phosphor having an emission peak in a blue region having a wavelength of 400 to 470 nm; B. at least one kind of trivalent terbium-activated, trivalent cerium, trivalent terbium-activated, or divalent manganese-activated green phosphor having an emission peak in a green region having a wavelength of 490 to 550 nm; At least one kind of trivalent europium-activated, divalent manganese-activated, or tetravalent manganese-activated red phosphor having an emission peak in a red region having a wavelength of 600 to 670 nm, and a mixture mainly containing a combination of these phosphors. By using a phosphor for the light-emitting layer, a fluorescent lamp that emits white light can be obtained while the lamp itself is colored in a specific color. In the above, the main component of the components A to C constituting the mixed phosphor refers to a range of 50 to 100% by weight when the total phosphor is 100% by weight.

Next, a lighting fixture according to the present invention comprises the fluorescent lamp described above, a lighting device for lighting the fluorescent lamp, and a fixture main body provided with the fluorescent lamp and the lighting device. This makes it possible to obtain a lighting fixture with improved interior properties without impairing the intrinsic function of the lighting, which allows the user to perform actions and work in the space without any trouble.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The fluorescent lamp of the present invention is provided with a thin film containing a pigment exhibiting a predetermined object color on the inner surface of the glass tube of the lamp. And by providing a light emitting layer composed of a mixed phosphor containing a plurality of phosphors as a main component, the emitted illumination light is a white light similar to a general fluorescent lamp. I have.

FIG. 1 is a sectional view of a fluorescent lamp according to an embodiment of the present invention. On the inner surface of the glass tube 1, a light emitting layer 2 that emits visible light and is formed of a mixed phosphor containing a plurality of phosphors as main components is formed. A thin film 3 made of a pigment exhibiting a predetermined object color is provided between the glass tube 1 and the light emitting layer 2.
Are formed.

The visible light emitted from the light emitting layer 2 passes through a thin film 3 made of a pigment exhibiting a predetermined object color. The thin film 3 made of the pigment exhibiting a predetermined object color has an absorption spectrum peculiar to the pigment used. Selective absorption of visible light based on

Therefore, when the fluorescent lamp of the present invention is turned on, the light color of the illumination light 4 obtained outside is determined by the emission spectrum radiated from the light-emitting layer 2 and the visible color of the thin film 3 made of a pigment exhibiting a predetermined object color. Since it is determined by the characteristics of light absorption, by adjusting these, white illumination light 4 similar to a general fluorescent lamp can be obtained.

On the other hand, a thin film 3 made of a pigment exhibiting a predetermined object color is provided on the inner surface of the glass tube 1, and when the light is turned off, the pigment reflects and absorbs external light according to the specific reflection and absorption characteristics. It is possible to obtain a highly interior appearance colored in a specific color by the color of the pigment.

Expecting the effect of suppressing the reaction between the glass material and the mercury sealed in the lamp, reflecting ultraviolet rays, etc.,
It is common practice to form a thin film generally called a protective film mainly composed of fine particles of aluminum oxide, yttrium oxide or the like on the inner surface of the glass tube 1, but in the present invention, the protective film is formed. In this case, the effect of the present invention can be obtained.

The above-mentioned protective film may be formed by preparing a protective film solution in which fine particles of aluminum oxide, yttrium oxide or the like are dispersed in water or an organic solvent, and applying and drying the liquid on the inner surface of the glass tube. .

A pigment exhibiting a predetermined object color is also dispersed in the above-mentioned protective film liquid to form a mixture solution of the protective film material and the pigment. Using this solution, a pigment exhibiting a predetermined object color is obtained.
The effect of the present invention can be obtained even when a thin film formed using a mixture containing at least one of aluminum oxide and yttrium oxide which is a material of the protective film is provided. With this configuration, one thin film can simultaneously have a function as a protective film and a function as a thin film made of a pigment for coloring the lamp itself.

When a thin film is formed on a fluorescent lamp using the mixture solution of the protective film material and the pigment, the content ratio of the protective film material and the pigment in the thin film determines the characteristics of the formed thin film. That is, if the weight of at least one oxide selected from aluminum oxide and yttrium oxide, which are protective film materials, is small with respect to the weight of the pigment exhibiting a predetermined color body, the function of coloring the lamp itself can be performed,
It does not sufficiently fulfill the function as a protective film.

Conversely, if the weight of at least one oxide selected from the group consisting of aluminum oxide and yttrium oxide, which is a material for the protective film, is greater than the weight of the pigment exhibiting a predetermined color, the function as the protective film can be achieved. In addition, since the protective film material aluminum oxide and yttrium oxide are white particles, the lamp itself cannot be colored to a specific color other than white.

From such a viewpoint, in the above thin film,
In order to simultaneously provide the function as a protective film and the function as a thin film made of a pigment for coloring the lamp itself, the pigment having a predetermined color body in the thin film and the protective film materials aluminum oxide and yttrium oxide are used. For the content of at least one selected oxide, the range of 20 to 150 parts by weight of at least one oxide selected from aluminum oxide and yttrium oxide is preferable with respect to 100 parts by weight of a pigment exhibiting a predetermined color body. In particular, it is preferable to mix in the range of 40 to 100 parts by weight.

FIG. 2 is a cross-sectional view of the fluorescent lamp having the above configuration. On the inner surface of the glass tube 5, a light emitting layer 6 that emits visible light composed of a mixed phosphor containing a plurality of phosphors as a main component is formed, and a predetermined object color is provided between the glass tube 5 and the light emitting layer 6. Is formed, and a thin film 7 made of a mixture containing at least one of aluminum oxide and yttrium oxide as a material of the protective film is formed. The illumination light 8 is white light similar to a general fluorescent lamp.

As the pigment used in the fluorescent lamp of the present invention, one or more inorganic pigments may be used.
When a fluorescent lamp is manufactured, a glass tube is formed to a thickness of 500 to 80 in order to form a light emitting layer made of a phosphor on the inner surface of the glass tube.
Since it is necessary to heat-treat at about 0 ° C., it is inappropriate to use an organic pigment.

Table 1 shows a list of typical pigments that can be used to realize the present invention.

[0031]

[Table 1]

In addition, pigments not listed in Table 1 can be used as long as they are stable during the manufacture and operation of the fluorescent lamp.

Next, the light-emitting layer of the fluorescent lamp of the present invention has a wavelength of 400 to 4 similar to that of a general three-band fluorescent lamp.
It may be composed of a mixed phosphor containing a plurality of phosphors as main components so that a combination of light emission in a blue region of 70 nm, a green region in a wavelength of 490 to 550 nm, and a red region in a wavelength of 600 to 670 nm is emitted as main light emission. .

As the phosphor having an emission peak in the blue region having a wavelength of 400 to 470 nm, at least one kind of a bivalent europium-activated blue phosphor is used. For example, a divalent europium-activated barium magnesium aluminate phosphor (BaMg ₂ Al ₁₆ O ₂₇ : Eu ²⁺ ) or a divalent europium-activated strontium calcium barium chloroapatite phosphor ((Sr, Ca, Ba) ) ₁₀ (PO ₄ ) ₆ Cl
₂ : Eu ²⁺ ) or the like.

As a phosphor having an emission peak in a green region having a wavelength of 490 to 550 nm, trivalent terbium activation,
Alternatively, at least one of trivalent cerium, trivalent terbium activated, and divalent manganese activated green phosphors is used. For example, trivalent terbium-activated cerium magnesium aluminate phosphor (CeMgAl ₁₁ O ₁₉ : Tb ³⁺ ),
Cerium trivalent, terbium activated lanthanum phosphate phosphor (LaPO ₄ : Ce ³⁺ , Tb ³⁺ ), divalent manganese activated cerium magnesium zinc aluminate phosphor (Ce (M
g, Zn) Al ₁₁ O ₁₉ : Mn ²⁺ ) or the like is used.

Light emission in the red region at a wavelength of 600 to 670 nm
As a phosphor having a peak, trivalent europium
Active or activated divalent manganese or tetravalent manganese
At least one type of activated red phosphor is used. For example,
Trivalent europium activated yttrium oxide phosphor (Y
_TwoO_Three: Eu³⁺) Trivalent europium activated gadolinium oxide
Phosphor (Gd_TwoO_Three: Eu³⁺) Bivalent manganese activated ho
Cerium gadolinium magnesium phosphor (CeGd
MgB_FiveO_Ten: Mn²⁺) Tetravalent manganese activated germanic acid
Fluoromagnesium phosphor (3.5MgO.0.5M)
gF_Two・ GeO_Two: Mn ⁴⁺) Is used.

In a general three-wavelength-range fluorescent lamp, a wavelength of 40% is used for the purpose of improving color rendering.
In addition to a phosphor that emits light in a blue region of 0 to 470 nm, a green region of 490 to 550 nm, and a red region of 600 to 670 nm, a phosphor having an emission peak in another wavelength region may be intentionally added. However, in the present invention, a phosphor having an emission peak in another wavelength region may be added, and the effect of the present invention is not lost.

The fluorescent lamp of the present invention can be prepared by using the above-mentioned pigments and phosphor materials. When the fluorescent lamp of the present invention is turned on, the correlated color temperature is 2700 to 7500K.
In addition, illumination light whose chromaticity point is within a chromaticity range of −0.005 to 0.005 in chromaticity deviation from a black body locus on the CIE1960uv chromaticity diagram may be emitted.

Fluorescent lamps used for house lighting, indoor facility lighting and the like generally have a correlated color temperature in the range of 2700 to 7500 K, and particularly 3000 to 7000 K.
Those within the range of K account for the majority. Further, the chromaticity deviation of the chromaticity point of the light color from the locus of the black body on the CIE1960uv chromaticity diagram is generally set to near 0, and there is a variation in the manufacturing process. 0.
Most of the lamps are within the chromaticity range of 005 to 0.005. If the chromaticity is within the above chromaticity range, the lamp has the same function as a lamp having a chromaticity deviation from the black body locus on the CIE1960uv chromaticity diagram of 0. It is used without trouble as a lamp having.

That is, the correlated color temperature is 2700 to 750.
Illumination light having a chromaticity deviation of 0K and a chromaticity point within a chromaticity range of -0.005 to 0.005 from the blackbody locus on the CIE 1960uv chromaticity diagram is generally recognized as "white light". It is considered to fulfill the purpose of being able to perform actions and work in the illuminated space without hindrance.

Therefore, also in the present invention, the correlated color temperature during lighting is 2700 to 7500 K and the chromaticity point is CIE19.
The chromaticity deviation from the blackbody locus on the 60uv chromaticity diagram is -0.0
The light color of the fluorescent lamp may be set so as to emit illumination light within the chromaticity range of 05 to 0.005.

Next, a specific method for producing the fluorescent lamp of the present invention will be described.

First, a pigment capable of exhibiting a desired color when the fluorescent lamp is turned off is selected, and the pigment is dispersed in water, an organic solvent, or the like. A binder solution is appropriately added to prepare a pigment solution. At this time, a pigment solution in which at least one of aluminum oxide fine particles or yttrium oxide fine particles generally used as a material of the protective film and the pigment are simultaneously mixed and dispersed may be used. Then, the pigment solution is applied to the inner surface of the glass tube and dried, and if necessary, heat treatment is performed at an appropriate temperature to form a thin film made of a pigment having a predetermined object color on the inner surface of the glass tube.

Since the method of forming such a thin film is exactly the same as the method of forming a protective film layer in a general fluorescent lamp, the thin film is formed in the same manner as a general fluorescent lamp without major changes in manufacturing. It is possible.

Here, the object color when the fluorescent lamp is turned off is largely determined by the object color of the pigment to be used, but the density of the color can be adjusted by the concentration of the pigment in the pigment solution or the thickness of the thin film made of the pigment. Of course, if the pigment used is the same, the higher the pigment concentration and the thicker the thin film made of the pigment, the darker the color of the object when the fluorescent lamp is turned off. At the time of lighting, since the thin film made of the pigment absorbs much visible light emitted from the light emitting layer, it goes without saying that the luminous flux of the lamp is reduced. The preferred thickness of the layer containing the pigment is in the range of 0.2 to 5.0 μm, and the more preferred thickness is in the range of 0.5 to 3.0 μm.

Next, a blue region having a wavelength of 400 to 470 nm, a green region having a wavelength of 490 to 550 nm, and a wavelength region of 600 to 470 nm.
A plurality of phosphors each having an emission peak in a 670 nm red region are prepared according to the light color of a desired lamp, dispersed in water or an organic solvent, and a polymer for facilitating film formation as necessary. Are added as needed to create a phosphor suspension. Then, the phosphor suspension is applied and dried on the inner surface of the glass tube on which the thin film made of the pigment is formed, and is subjected to a heat treatment at an appropriate temperature to form a light emitting layer.

Here, in a general three-wavelength-range fluorescent lamp in which a thin film made of a pigment is not formed on the inner surface of a glass tube, the correlated color temperature is 2700 to 7500 K, and the chromaticity point is black on the CIE1960uv chromaticity diagram. A phosphor suspension prepared by mixing a plurality of phosphors at a certain ratio so as to emit white illumination light having a chromaticity deviation from the body locus within a chromaticity range of −0.005 to 0.005 is directly used as a pigment. When a fluorescent lamp is formed by applying a light-emitting layer by coating the inner surface of a glass tube with a thin film formed thereon, the thin film made of pigment selectively absorbs the visible light emitted from the light-emitting layer. The illumination light to be emitted has a correlated color temperature of 2700 to 750.
The chromaticity deviation from the blackbody locus on the CIE 1960uv chromaticity diagram may be out of the chromaticity range of −0.005 to 0.005 at 0K and the chromaticity point.

However, a blue region having a wavelength of 400 to 470 nm, a green region having a wavelength of 490 to 550 nm, and a wavelength region of 600 to 470 nm.
By mixing the three main lights in the red region of 670 nm in various ratios, it is possible to produce visible light of a considerably wide chromaticity range including white light. It is a feature, in the fluorescent lamp of the present invention, in consideration of the selective absorption of visible light by a thin film made of a pigment, in the blue region, green region, by adjusting the blending ratio of phosphors emitting in the red region, A fluorescent lamp that emits white light and has the effects of the present invention can be easily obtained while the lamp itself is colored in a specific color.

Thereafter, the manufacture of a fluorescent lamp as usual, such as exhausting a glass tube provided with a thin film made of the above-described pigment and a light emitting layer made of a mixed phosphor, enclosing rare gas and mercury, sealing, forming a base, etc. According to the method, the fluorescent lamp of the present invention can be obtained.

The fluorescent lamp of the present invention may be a ring-type fluorescent lamp, a compact fluorescent lamp, or the like in addition to a straight tube fluorescent lamp, and the shape of the lamp is not particularly limited. Regardless of the shape of the fluorescent lamp, it is possible to obtain a fluorescent lamp having the effects of the present invention.

Using the fluorescent lamp of the present invention prepared as described above, it is possible to obtain a lighting fixture having high interior properties.

FIG. 3 shows the configuration of an embodiment of the lighting fixture of the present invention. This lighting fixture comprises a fluorescent lamp 9 of the present invention,
The lighting device 10 includes a ballast and the like for lighting the fluorescent lamp 9, and an instrument body 11 provided with the fluorescent lamp 9 and the lighting device 10.

By determining the color of the lighting device 10 and the fixture body 11 in consideration of the shape of the lighting fixture and the harmony of the color scheme with the object color when the fluorescent lamp 9 of the present invention is turned off,
It is possible to provide a lighting device having high interior properties that is suitable for the atmosphere of the space in which the lighting device is installed.

[0054]

Next, an embodiment of a fluorescent lamp according to the present invention will be described.

Example 1 15 g of a cobalt blue blue pigment having an average particle size of 0.2 to 0.5 μm was dispersed in 3000 ml of pure water, and a 1.5% by weight aqueous solution of a water-soluble polymer polyethylene oxide (PEO) was used as a binder. 50
0 ml was added to prepare a blue pigment solution.

FIG. 4 shows the spectral reflection spectrum of the used cobalt blue blue pigment in a powder state. Note that the spectral reflectance at each wavelength is a value when the value of the spectral reflectance at each wavelength of the standard barium sulfate white powder is 100%.

When a thin film (thickness: about 1 μm) of a pigment was formed on the inner surface of the glass tube using this pigment solution, the glass tube exhibited a pale blue color.

Next, 15% by weight: 50% by weight of a bivalent europium-activated barium magnesium aluminate blue phosphor, a trivalent terbium-activated lanthanum phosphate green phosphor, and a trivalent europium-activated yttrium oxide red phosphor. 35
The phosphors were mixed at a ratio of weight% to prepare a phosphor suspension. Then, using this phosphor suspension, a light emitting layer made of the mixed phosphor was formed on the inner surface of the glass tube on which the thin film made of the pigment was formed (film thickness: about 20 μm).

Then, the fluorescent lamp according to the present invention was obtained by performing evacuation and sealing in accordance with a general fluorescent lamp manufacturing method.

The light color obtained when the fluorescent lamp was turned on was white light having a correlated color temperature of 5023 K and a chromaticity deviation of -0.0012 from the blackbody locus on the CIE1960uv chromaticity diagram at the chromaticity point. Was.

Further, when the fluorescent lamp was turned off, a thin blue color pigment was formed, so that it had a faint blue color and a highly interior appearance.

Example 2 30 g of a titanium-cobalt green green pigment having an average particle diameter of 0.3 to 0.6 μm and 15 g of aluminum oxide fine particles having an average particle diameter of 0.01 to 0.1 μm were dispersed in 3000 ml of butyl acetate. 150 ml of a 5% by weight solution of ethyl cellulose (EC), a polymer soluble in butyl acetate, was added as a binder to prepare a green pigment solution.

FIG. 5 shows the spectral reflection spectrum of the used titanium cobalt green green pigment in a powder state. (Note that the spectral reflectance at each wavelength is a value when the value of the spectral reflectance at each wavelength of the standard barium sulfate white powder is 100%.) Using this pigment solution, a pigment is applied to the inner surface of the glass tube. Thin film composed of a mixture of aluminum and aluminum oxide (thickness: about 2μ)
When m) was formed, the glass tube exhibited a bright green color.

Next, a divalent europium-activated strontium calcium barium chloroapatite blue phosphor,
Manganese-activated cerium magnesium zinc aluminate green phosphor, trivalent terbium-activated lanthanum phosphate green phosphor, trivalent europium-activated yttrium oxide red phosphor by weight% 40%: 8%: 20%: 32% To prepare a phosphor suspension. Then, using this phosphor suspension, a light emitting layer made of the mixed phosphor was formed on the inner surface of the glass tube on which the thin film made of the mixture of the pigment and aluminum oxide was formed (film thickness: about 20 μm).
m).

Then, the fluorescent lamp according to the present invention was obtained by performing evacuation and sealing in accordance with a general fluorescent lamp manufacturing method.

The light color of the obtained fluorescent lamp at the time of lighting was white light having a correlated color temperature of 6650 K and a chromaticity deviation of the chromaticity point from the black body locus on the CIE 1960 uv chromaticity diagram of 0.0008. .

When the fluorescent lamp was turned off, a thin film containing a green pigment was formed, so that it had a bright green color and a high interior appearance.

[0068]

As described above, according to the present invention, there is a fluorescent lamp which emits white light and can be manufactured in the same manner as a general fluorescent lamp without any major manufacturing change. It is possible to obtain a fluorescent lamp having a high interior property colored in a specific color and a lighting fixture using the fluorescent lamp. Thus, the present invention is of great industrial value.

[Brief description of the drawings]

FIG. 1 is a sectional view of a fluorescent lamp according to an embodiment of the present invention.

FIG. 2 is a sectional view of a fluorescent lamp according to another embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating a configuration of a lighting device according to an embodiment of the present invention.

FIG. 4 is a spectral reflection spectrum diagram of a cobalt blue blue pigment powder used in Example 1 of the present invention.

FIG. 5 is a spectral reflection spectrum diagram of titanium cobalt green green pigment powder used in Example 2 of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 glass tube 2 light emitting layer composed of mixed phosphor 3 thin film composed of pigment 4 illumination light 5 glass tube 6 light emitting layer composed of mixed phosphor 7 thin film composed of mixture of pigment and protective film material 8 illumination light 9 fluorescent lamp 10 lighting device 11 Lighting fixture body

Claims (7)

[Claims] 1. A light-emitting layer comprising a mixed phosphor containing a plurality of phosphors as a main component and having a correlated color temperature of 2 on the inner surface of a glass tube.
700-7500K and chromaticity point is CIE1960uv
The chromaticity deviation from the blackbody locus on the chromaticity diagram is -0.005
A fluorescent lamp for emitting illumination light having a chromaticity range of 0.005, wherein a thin film made of a pigment exhibiting a predetermined object color is provided between the glass tube and the light emitting layer. lamp. 2. The fluorescent lamp according to claim 1, wherein at least one oxide selected from aluminum oxide and yttrium oxide is further mixed with a thin film made of a pigment exhibiting a predetermined object color. 3. The fluorescent lamp according to claim 2, wherein 20 to 150 parts by weight of at least one oxide selected from aluminum oxide and yttrium oxide is mixed with 100 parts by weight of a pigment exhibiting a predetermined object color. . 4. A pigment exhibiting a predetermined object color is cobalt violet, cobalt blue, cobalt aluminum chrome blue, ultramarine, cobalt green, cobalt chromium green, titanium cobalt green, titanium yellow, titanium barium nickel yellow, red iron, lead tan And at least one pigment selected from copper chromium black and cobalt ferrite black.
The fluorescent lamp according to any one of the above. 5. The light-emitting layer has a blue region having a wavelength of 400 to 470 nm, a green region having a wavelength of 490 to 550 nm, and a wavelength of 60.
The fluorescent lamp according to any one of claims 1 to 4, wherein a combination of light emission in a red region of 0 to 670 nm is emitted as main light emission. 6. The fluorescent lamp according to claim 5, wherein the light emitting layer is made of a mixed phosphor containing the following components A to C as main components. A. B. at least one type of a divalent europium-activated blue phosphor having an emission peak in a blue region having a wavelength of 400 to 470 nm; B. at least one kind of trivalent terbium-activated, trivalent cerium, trivalent terbium-activated, or divalent manganese-activated green phosphor having an emission peak in a green region having a wavelength of 490 to 550 nm; At least one kind of trivalent europium-activated, divalent manganese-activated, or tetravalent manganese-activated red phosphor having an emission peak in a red region having a wavelength of 600 to 670 nm. 7. The fluorescent lamp according to claim 1, a lighting device for lighting the fluorescent lamp, and a fixture main body provided with the fluorescent lamp and the lighting device. lighting equipment.