JPH11339521A - Lighting equipment - Google Patents

Abstract

(57) [Problem] To provide a photocatalyst excitation light source for irradiating indirect illumination having a structure invisible to human eyes with light containing a large amount of ultraviolet rays and a photocatalyst member for promoting a photocatalytic reaction based on this irradiation light. Obtaining good lighting function and improving deodorization efficiency. SOLUTION: A cover member 5 is provided so as to surround a part or the whole of a light emitting unit 2, and reflects or transmits light from the light emitting unit 2. At this time, the photocatalyst coating portion 6 applied to the inner surface of the cover member 5 absorbs light emitted from the light emitting portion 2, causes a photocatalytic reaction by the titanium oxide 6a, and causes a fluorescent action by the phosphor 6b. . This allows
Since a light-emitting portion for promoting a photocatalytic reaction can be used, the deodorizing efficiency can be improved, and the lighting function can be improved by a fluorescent action.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device having a secondary function such as deodorizing, disinfecting, or cutting off ultraviolet rays in addition to a lighting function.

[0002]

2. Description of the Related Art In general, a lighting device is used for illuminating a space such as a room, a toilet, a telephone booth, a tunnel, a subway platform, and the like. It is located in the area where it does not interfere.

[0003] On the other hand, in such a closed space, if odorous gas or toxic gas is generated, these gases are trapped in this space because the space is closed, and the living space is inhabited. Not only does it cause discomfort to people, but it can also interfere with daily life. In particular, recently, a chemical substance hypersensitivity (generally referred to as new construction disease), which may react delicately to gas from building members and the like when newly constructed and adversely affect residents, has been regarded as a problem.

Normally, the trapped gas is discharged to the outside by using, for example, a ventilation fan or the like. However, if the trapped gas cannot be completely discharged to the outside, for example, an apparatus for disinfection and disinfection is used. Must be specially provided to clean the air.

A fluorescent lamp used as a lighting device contains a small amount of ultraviolet light in light emitted from the fluorescent lamp. Of these ultraviolet rays, ultraviolet rays in a short wavelength region of 320 nm or less may affect the human body, and are configured to cut such ultraviolet rays as much as possible.

Therefore, conventionally, as a lighting device having an ultraviolet absorbing function of absorbing ultraviolet light and integrally integrating a lighting device and a deodorizing or disinfecting device, Japanese Patent Application No. 7-111104. There is an illuminating device proposed in the document by the publication.

[0007] According to the lighting device according to this proposal, a light-emitting portion, which is a light source containing ultraviolet light, is provided so as to cover a part or the entirety of the light-emitting portion. By absorbing the light emitted from the light emitting portion and interposing a semiconductor material exhibiting a photocatalytic reaction, the light from the light emitting portion is absorbed by the semiconductor material to cause a photocatalytic reaction. Certain and toxic gases are made odorless and harmless.

[0008] Such a lighting device can perform illumination, which is a normal function, with light from the light emitting portion, and further, ultraviolet light contained in the light from the light emitting portion is applied to the semiconductor material. Because it is absorbed, it is also possible to prevent ultraviolet irradiation to the outside.

By the way, considering the deodorizing efficiency by the photocatalytic reaction in the lighting device having the above configuration, the deodorizing efficiency can be improved as the amount of the ultraviolet light absorbed by the semiconductor substance or the like increases during the photocatalytic reaction. It is. In other words, it has a light emission characteristic with a large amount of ultraviolet radiation,
The use of a dedicated excitation light source to activate the photocatalytic reaction.

However, since such a photocatalytic excitation light source mainly emits ultraviolet rays, there is a problem that it cannot be used in a place where it can be directly seen by human eyes as in a general lighting device. . Further, even if the photocatalyst excitation light source is used in the above-described conventional illumination device, the deodorization efficiency cannot be further improved, and no improvement has been made at present.

[0011]

As described above, in the conventional lighting device, it is desirable to use a photocatalytic excitation light source for obtaining a high photocatalytic ability in order to improve the deodorizing efficiency.
Since this light source mainly emits light containing ultraviolet rays, there is a problem that the light source cannot be actively installed in a place where human eyes can see it. Although the radiation may be reduced, there is a problem that the deodorizing efficiency cannot be improved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an illuminating device capable of obtaining a good illuminating function and improving deodorizing efficiency.

[0013]

According to a first aspect of the present invention, there is provided a lighting device which emits light containing at least ultraviolet light, and is provided so as to surround a part or all of the light emitting portion. A cover member that reflects or transmits light from the unit; and a cover member that is provided on the inner surface of the cover member and absorbs light emitted from the light-emitting unit to generate at least one of a photocatalytic reaction and a light-emitting action. And a photocatalyst coating portion.

According to a second aspect of the present invention, in the illuminating apparatus according to the first aspect, the photocatalyst coating portion includes a titanium oxide that generates a photocatalytic reaction when irradiated with ultraviolet rays, and a fluorescent light that generates a luminous action. It is characterized by being composed of a body and a binder.

According to a third aspect of the present invention, there is provided a lighting device which emits light containing at least ultraviolet light, and is provided so as to surround a part or all of the light emitting portion, and reflects light from the light emitting portion. Or a cover member configured to include a phosphor that transmits and transmits light and emits light by the ultraviolet rays emitted from the light emitting unit; and a cover member that is provided on an inner surface of the cover member and absorbs light emitted from the light emitting unit. And a photocatalyst coating portion for causing a photocatalytic reaction.

According to a fourth aspect of the present invention, in the illuminating device according to the third aspect, the photocatalyst coating portion is made of titanium oxide and a binder which cause a photocatalytic reaction when irradiated with ultraviolet rays. It is characterized by comprising.

In the first and second aspects of the present invention, the cover member is provided so as to surround a part or the whole of the light emitting unit, and reflects or transmits light from the light emitting unit.
At this time, in the photocatalyst coating portion applied to the inner surface of the cover member, the titanium oxide undergoes a photocatalytic reaction by light emitted from the light emitting portion, and the phosphor emits light. This makes it possible to use a light emitting unit that promotes the photocatalyst, thereby improving the deodorizing efficiency and improving the lighting function by emitting light from the phosphor.

The third and fourth aspects of the present invention operate in the same manner as the first aspect of the present invention, except that the photocatalyst coating portion is mainly made of titanium oxide. It is possible to efficiently perform a photocatalytic reaction occurring on the inner surface. Further, since the cover member is configured to include the phosphor, the cover member emits light by the ultraviolet rays radiated from the light emitting unit inside the cover member. Thereby, the deodorizing efficiency can be further improved.

[0019]

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

FIGS. 1 to 3 show a first embodiment of a lighting device according to the present invention. FIG. 1 is a perspective view showing the entire structure of the lighting device with a part cut away, and FIG. 2 (a) is a side view of the device, and FIG. 2 (b) is a cross-sectional view taken along line AA of FIG. 2 (a).

In the embodiment of the present invention, for example, an illuminating device for indirectly illuminating a person so that light emitted from a light source does not touch an eye is provided, and a high photocatalytic function is added to this indirect illuminating device. By doing so, it is possible to use a photocatalytic excitation light source in which irradiation light contains a large amount of ultraviolet light, thereby improving the deodorizing efficiency and suppressing ultraviolet light radiated outward from the lighting device as much as possible.

More specifically, as shown in FIG.
Can be mounted on walls of closed spaces such as rooms, toilets, telephone booths, tunnels, and subway platforms. In other words, the lighting device 1 is an indirect lighting that performs indirect lighting, and is commonly called a bracket type.

The illuminating device 1 includes a light emitting section 2, a main body section 3 to which the light emitting section is mounted, a fixing section 4 for fixing the main body section 3 to a wall or the like, and a side wall of the main body section 3. The cover member 5 is attached to the fixed member 3a so as to cover the calling unit 2 and transmits the irradiation light from the light emitting unit 2, and the cover member 5 is applied to the inner surface of the cover member 5 and is irradiated with light from the light emitting unit. And a photocatalyst coating film section 6 that causes a photocatalytic reaction.

As the light emitting section 2, a light source containing a large amount of ultraviolet light in the emitted light, in particular, a fluorescent lamp for promoting photocatalyst is used. This fluorescent lamp for promoting photocatalyst contains a large amount of 380 nm ultraviolet light which greatly contributes to the photocatalytic reaction. In particular, a large amount of 365 nm ultraviolet light is contained.

As another fluorescent lamp for promoting photocatalyst,
A device that emits light containing a large amount of 254 nm ultraviolet light may be used, or a device containing 254 nm and 356 nm ultraviolet light may be used. That is, in promoting the photocatalytic reaction, the center wavelength is 254 nm and 356 nm.
It is desirable to include both ultraviolet rays of m and m. Further, a fluorescent lamp including these ultraviolet rays and visible light may be used. Furthermore, it is also possible to use a BL lamp containing almost no visible light.

Also, ultraviolet rays having a wavelength of 300 nm or less are very harmful to the human body,
254 nm to 4 emitted from the light emitting unit 2 of the present embodiment
The ultraviolet light of 00 is absorbed by the photocatalytic coating 6 of the cover member 5 and emits light, so that the ultraviolet light from the light emitting unit 2 does not affect the human body. further,
The cover member 1 has an indirect structure in which light from the light emitting section is not directly exposed to the eyes, and has an effect as a filter. Features are also available.

The light emitting section 2 having the above structure is mounted on the main body section 3, and the main body 3 is mounted on a wall or the like by, for example, a fixing member 4 integrally formed. On the other hand, on the opposite side of the main body 3, a fixed support member 3 a extending from the side surface of the main body 3 is formed.

A cover member 5 is attached to the base end of the fixed support member 3a so as to cover the calling unit 2. As shown in FIG. 2A, the cover member 5 is formed, for example, to bend in the vertical direction, and has a function of effectively condensing the light emitted from the light emitting unit 2. The cover member 5 is formed of a glass member that transmits visible light. By transmitting the visible light from the light emitting unit 2, effective illumination can be performed as indirect illumination.

In the present embodiment, the photocatalytic coating 6 applied to the inner surface of the cover member 5 is not merely for causing a photocatalytic reaction based on the ultraviolet rays from the light emitting section 2, but for the light emitting section. It is possible to obtain a light emission characteristic of emitting light by ultraviolet light included in the light from No. 2 and to cause a photocatalytic reaction with high efficiency.

The photocatalyst coating section 6 is formed by the A-
As shown in the cross-sectional view of the line A, a titanium oxide 6a which is a semiconductor substance for causing a photocatalytic reaction by ultraviolet rays from the light emitting portion, and a fluorescent light having a light emitting characteristic of emitting light by contacting and reacting with ultraviolet rays from the light emitting portion A body 6b and a binder 6c for bonding the titanium oxide 6a and the phosphor 6b together so as not to be peeled off.

Titanium oxide as a semiconductor substance causes a photocatalytic reaction when irradiated with light from the light-emitting section 2, and as a result, various odorous substances and harmful substances can be photochemically decomposed and removed at room temperature. It is. In the present embodiment,
Since the amount of ultraviolet light from the light emitting section 2 is large, the photocatalytic reaction at this time is extremely remarkable, that is, high deodorizing efficiency can be obtained.

The phosphor 6b has a light emission characteristic of being excited by the ultraviolet rays from the light emitting section 2 to emit light. In particular, the irradiation of ultraviolet rays near 365 nm makes it possible to efficiently perform the conversion efficiency. It is possible. The following table shows a list of the materials of the phosphor 6b that can obtain a high conversion efficiency characteristic in the vicinity of the ultraviolet ray having a center wavelength of 365 nm.

[0033]

[Table 1] In the phosphor 6b, the materials shown in Table 1 may be used alone or in combination of two or more in a predetermined amount, and may be appropriately combined so as to obtain good emission characteristics. It may be used. This allows
The color of light emitted can be changed depending on the material used.

Since the binder 6c is made of, for example, silicon oxide, by using this silicon oxide, the titanium oxide 6a and the phosphor 6b are connected and peeled from the inner surface of the cover member 6. So that they do not adhere.

As a method for forming the photocatalyst coating portion 6, the following method is employed.

In this method, for example, a coating liquid obtained by mixing various powders of the phosphor 6b and the titanium oxide 6a with an organosilicon compound as the binder 6c is prepared, and this coating liquid is prepared. Spray is applied to the inner surface of the cover member 6 by spraying. Thereafter, by performing a predetermined baking process and firing, the photocatalyst coating film portion 6 formed in a film shape is obtained. In this case, care must be taken because if the surface of the fine particles is completely covered with the binding portion 6c, which is the inactive substance, the photocatalytic reaction force is reduced.

Although the above-described method is an example of a method for forming the photocatalyst coating film portion 6, the present embodiment is not limited to such a method, and other than this, the cover member may be optimally formed. The silicon oxide 6a, the phosphor 6b, and the binder 6c can be uniformly and formed in a film shape on the inner surface of the substrate 5.

Next, the deodorizing action and the light emitting action of the photocatalytic coating 6 by the photocatalytic reaction will be described.

Now, it is assumed that, in the lighting device shown in FIG. 1, light from the light emitting section 2 is applied to the surface of the photocatalytic coating section 6 applied to the inner surface of the cover member 5. Then, when the light from the light emitting section 2 is irradiated on the photocatalytic coating section 6, the light energy is absorbed, the valence band electrons are excited and activated, and have strong oxidation and reduction energy.

Thereafter, when the odorous substance or harmful substance comes into contact with the surface of the photocatalyst coating section 6 in this state, the photocatalytic coating section 6 is converted into an odorless and harmless gas by the strong oxidizing and reducing powers. It will be qualitative. At this time, the photocatalyst coating portion 6
Is absorbed by the titanium oxide in the photocatalytic coating film portion 6 and is not radiated to the outside. Furthermore, since more light containing ultraviolet light is irradiated than in the prior art, the photocatalytic reaction is extremely remarkable, that is, a large deodorizing efficiency can be obtained.

At the same time, the ultraviolet rays from the light emitting section 2 are also applied to the phosphor 6b of the photocatalyst coating section 6. Then, the phosphor 6b is excited by, for example, absorption of ultraviolet light having a center wavelength near 365 nm to generate a light emitting action. afterwards,
The emitted light passes through the cover member 5 and is emitted to the outside as visible light. In addition, of the light from the light emitting unit 2, visible light that does not include ultraviolet light also passes through the cover member 5 and performs a lighting function. Therefore, as in the case of the photocatalytic reaction, the ultraviolet light from the light emitting section 2 is converted into light by the light emitting body 6b of the photocatalyst coating section 6, so that it is not radiated to the outside. Indirect lighting can be performed.

At the time of the above-mentioned deodorizing action and light emitting action, as shown in FIG. 2A, the light emitting section 2 is exposed to air, so that the air inside the cover member 5 is warmed. Then, it rises and flows out from the vicinity of the light emitting unit 2. Accordingly, new air flows in from the side surface or the lower side of the light emitting unit 2. As a result, the offensive odor and the toxic gas flow into the vicinity of the inside of the cover member 5 together with the air, and become odorless and harmless gas by the photocatalytic reaction and flow to the outside of the apparatus.

Then, this operation is sequentially repeated, and the entire space such as a room becomes odorless and harmless air.

The above operation is performed while the lighting device 1 is on. That is, as long as a user is present in the space, the lighting device 1 is turned on by the light emitting action and the visible light from the light emitting unit 2, and the deodorizing and disinfecting action is continued during the lighting.

Therefore, an experiment was conducted to compare the deodorizing effect of the lighting device of the present embodiment with the deodorizing effect of the conventional lighting device (Example). FIG. 3 shows characteristic results according to such an embodiment. FIG. 3 is a characteristic diagram for explaining the deodorizing efficiency of the apparatus of FIG.

The conventional illuminating device has substantially the same configuration as the illuminating device 1 shown in FIG. 1, but uses a normal light source, that is, a device which hardly contains ultraviolet light, as the light emitting section 2.

As an experimental method, the lighting device shown in FIG. 1 or the above-mentioned conventional lighting device was mounted in a housing (not shown) in which an odor such as acetaldehyde was sealed, and was sealed again, and the time required for the photocatalytic reaction was measured. Deodorization efficiency of acetaldehyde was detected according to.

As a result of this experiment, deodorizing efficiency was obtained as shown in FIG. 3 (dashed lines indicate the conventional apparatus, and solid lines indicate the apparatus of the embodiment). That is, as shown in FIG. 3, a lighting device according to the present embodiment using a photocatalyst promoting lamp that irradiates light containing a larger amount of ultraviolet light than a conventional lighting device using a normal light source as the light emitting unit 2 (FIG. 1) See
It can be recognized that acetaldehyde, which is an odor component, can be significantly deodorized with respect to the elapsed time, and the deodorization efficiency can be improved as compared with the related art.

Therefore, according to this embodiment, the photocatalyst-promoting lamp as the light-emitting section 2 for irradiating light containing a large amount of ultraviolet light can be used as the light source of the indirect lighting device having good heat convection in the device. By doing so, the photocatalytic reaction by the photocatalyst coating film 6 applied to the inner surface of the cover member 6 is caused more effectively, and thus the deodorizing efficiency can be improved with a simpler configuration than before.

Also, by mixing the photocatalytic reaction coating 6 with a phosphor 6c having a light-emitting characteristic that emits light when excited by irradiation with ultraviolet rays, the ultraviolet rays are reliably absorbed and emitted, thereby improving the deodorizing efficiency. Along with this, it is possible to prevent the radiation of ultraviolet rays that are frequently irradiated to the outside, and furthermore,
Since the light emitter 6c emits light, it also contributes to the lighting function.

Further, a lighting device having a photocatalytic function and a light emitting function using a phosphor can be configured with a simple configuration, so that the manufacturing cost can be reduced.

Next, a second embodiment of the illumination device of the present invention will be described in detail with reference to FIG.

FIG. 4 shows a second embodiment of the lighting device of the present invention. FIG. 4 (a) is a side view of the lighting device, and FIG. 4 (b).
FIG. 5 is a sectional view taken along line BB of FIG. In the apparatus shown in FIG. 4, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described.

In the present embodiment, as shown in FIG. 4 (a), components similar to those of the first embodiment are provided, but the material for forming the cover member 5 is a glass component or the like. In addition, the cover member 5a is formed by incorporating the phosphor 6b used in the above embodiment, and the titanium oxide 6 for photocatalytic reaction is formed on the inner surface of the cover member 5a.
This is different from the above-described embodiment in that the photocatalyst coating portion 6B composed of b and the binder 6c is applied and provided.

That is, the cover member 5a is usually made of a glass member that transmits visible light from the light emitting section 2, but in addition to this glass component, a fluorescent substance (not shown) that is a fluorescent substance is used. It is comprised containing. That is,
Photocatalytic coating 6 provided on the inner surface of cover member 5a
B does not contain a phosphor.

When the light from the light emitting section 2 is irradiated, the cover member 6B transmits the visible light as it is and emits it to the outside. At this time, the phosphor (not shown) contained in the cover member 6 </ b> B emits light because it has a light emission characteristic of being excited by ultraviolet light from the light emitting unit 2 to emit light. As the luminous body having good luminous conversion efficiency, there is a luminous material shown in Table 1 which can obtain luminous characteristics particularly in the vicinity of 365 nm ultraviolet rays as in the above embodiment.

On the other hand, as shown in FIG. 4 (b), the photocatalyst coating film portion 6B is composed of a titanium oxide 6a for photocatalytic reaction and a binder 6c. By using silicon oxide), the titanium oxide 6a is tied up and adhered so as not to be peeled off from the inner surface of the cover member 6B. The method of manufacturing the photocatalyst coating 6B may be the same as that in the first embodiment, or may be formed by another method.

The titanium oxide 6a causes a photocatalytic reaction by the ultraviolet rays from the light emitting section 2, as in the first embodiment.

Next, the deodorizing action of the photocatalytic coating 6B by the photocatalytic reaction and the light emitting action by the phosphor of the cover member 5a will be described.

Now, in the lighting device shown in FIG. 4A, it is assumed that light from the light emitting section 2 is applied to the surface of the photocatalytic coating section 6B applied to the inner surface of the cover member 5a. Then, when the light from the light emitting section 2 is applied to the photocatalytic coating section 6B, the light energy is absorbed, the valence band electrons are excited and activated, and have strong oxidizing and reducing energy.

Thereafter, when the odorous substance or harmful substance comes into contact with the surface of the photocatalyst coating portion 6B in this state,
Due to the strong oxidizing power and reducing power of the photocatalytic coating 6B, the photocatalytic coating 6B is reformed into odorless and harmless gas. At this time, the ultraviolet rays applied to the photocatalyst coating portion 6 are absorbed by the titanium oxide of the photocatalyst coating portion 6 and are not emitted to the outside. Furthermore, since the irradiation of light containing more ultraviolet light than in the prior art, the photocatalytic reaction is extremely significant, that is,
Great deodorization efficiency is obtained.

At the same time, the ultraviolet rays from the light emitting section 2 are also irradiated on the phosphor (not shown) included in the cover member 5a via the photocatalyst coating section 6B. Then, the phosphor absorbs, for example, ultraviolet light having a center wavelength of about 356 nm,
Excites to produce luminescence. Thereafter, the emitted light is emitted as visible light to the outside of the cover member 5a. In addition, of the light from the light emitting unit 2, visible light that does not include ultraviolet light also passes through the cover member 5a and performs a lighting function.

Therefore, as in the case of the photocatalytic reaction, the ultraviolet light from the light emitting section 2 is converted into light by the light emitting body of the cover member 5a, so that it is not emitted to the outside, that is, has no effect on the human body and is safe. Indirect lighting can be performed.

The subsequent operation is the same as in the first embodiment, so that the entire space such as a room can be made odorless and harmless air.

Although not shown, the same experiment as in Example 1 was performed to compare the deodorizing effect of the lighting device of the present embodiment with the deodorizing effect of the conventional lighting device. 1, the lighting device of the present embodiment (see FIG. 4) can deodorize acetaldehyde, which is an odor component, much more than the conventional lighting device. The deodorizing efficiency was improved as compared with the lighting device of the first embodiment.

Therefore, according to this embodiment, the same effects as those of the first embodiment can be obtained, the deodorizing efficiency can be further improved, and the photocatalyst coating film 6B is made of titanium oxide 6a. And the binder 6c alone, the manufacturing process of the photocatalytic coating 6B can be simplified.

Although the present embodiment does not describe a method for manufacturing the cover member 5a containing the fluorescent substance, any method may be used as long as the fluorescent material is uniformly present in the cover member 5a. .

By the way, in the lighting device of the present invention, it is possible to further enhance the deodorizing effect and to effectively discharge the hot air whose temperature has been raised by lighting to the outside of the lighting device. Such an embodiment will be disclosed.

FIGS. 5 to 7 show a third embodiment of a lighting device according to the present invention. FIG. 5 is a side view for explaining a schematic structure of the lighting device, and FIG. FIG. 6 is a side view showing a modified example of the lighting device of FIG. 5.

In the apparatus shown in FIG. 5, the same components as those of the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. Further, in each of the embodiments described below, the place where the lighting device is installed will be described as an installation location such as a ceiling or a wall.

Conventionally, the cover member provided in the lighting device can be attached to and detached from the lighting device main body, but cannot be moved in the attached state. For example, when the cover member that covers a part or the entirety of the light emitting unit cannot be moved in a mounted state, the temperature of the air between the lighting device and the cover member rises due to the lighting of the light emitting unit, and the temperature of the air increases. Since the light does not flow out and stays in the vicinity of the light emitting unit or in the lighting device, the lighting device itself may be adversely affected as a result.

Therefore, in the present embodiment, the cover member of the lighting device is configured to be movable, thereby generating heat convection in the device and effectively discharging the hot air generated by the lighting of the light emitting portion to the outside. In addition to reducing the ambient temperature in the apparatus by causing the gas to flow out, the deodorizing efficiency by the photocatalytic reaction is further improved by utilizing the heat convection.

Specifically, as shown in FIG. 5A, the cover member 12 covering the light emitting portion 13 of the lighting device main body 11 is
The lighting device main body 1 is provided by a predetermined number of mounting movable members 14.
1 can be attached.

As shown in FIG. 6, these mounting movable members 14 include, for example, a first slider 14 a having a long slide hole 14 d fixed to the illumination device main body 11, and a screw hole fixed to the cover member 12. Second slider 1 having
4b.

The first slider 14a and the second slider 1
4b is fixed by screwing with the screw 14c through the screw hole and the slide elongate hole 14d. In other words, by loosening the screw 14c, the second slider 14b can slide toward the lighting device main body 11 or in the opposite direction, and can rotate the second slider 14b about the screw 14c as a rotation axis. That is, the arrangement state of the cover member 12 itself can be changed.

For example, if the mounting movable member 14 is slid and fixed the shortest, the cover member 6 can be fixed in an arrangement state as shown in FIG. 5B.

The photocatalyst coating portion 6 used in the first embodiment is provided on the inner surface of the cover member 12, and a photocatalyst promoting lamp is used as the light emitting portion 13. The same deodorizing effect can be obtained by causing a photocatalytic reaction as in the first embodiment.

In the present embodiment, the lighting device main body 1
Assuming that the temperature of the air between the first member 1 and the cover member 12 rises due to the lighting of the light emitting portion 13, the screws of the mounting movable member 14 are loosened in advance, and the cover member 12 is moved to a position farthest from the lighting device body 11. If it is moved and fixed, the space between the lighting device main body 11 and the cover member 12 becomes wider, so that it becomes easier for fresh air to flow in and at the same time to flow out the air whose temperature has risen to the outside. In other words, by facilitating the formation of a path for heat convection, it is possible to reduce a rise in the temperature of the air inside or around the apparatus.

Thus, it is possible to prevent the device from being used sharply due to a rise in temperature inside or around the device, and furthermore, by forming a heat convection path, the deodorized gas always flows out. Thereby, the effect that the deodorizing efficiency can be improved can be obtained.

FIG. 7 shows a modification of the above cover member, and is a configuration diagram for explaining a schematic configuration.

The present embodiment is characterized in that the cover member 12 shown in FIG. 5 is divided into at least two parts in order to further efficiently conduct heat convection.

For example, if the cover member 12 is divided into two, as shown in FIG.
Can be changed in arrangement by the attached movable members 14 attached thereto. In this case, assuming that one cover member 12a is closest to the lighting device main body 11 and the other cover member 12a is moved and fixed from the lighting device main body 11 to an equivalent position, the arrangement state shown in FIG. 7 is obtained.

As a result, it is possible to form an opening through which the air whose temperature has increased flows out to the outside by thermal convection. Therefore, as compared with the example shown in FIG. Temperature rise of the air can be reduced. Similarly, the deodorizing efficiency is also improved.

In this embodiment, in order to reduce the temperature rise due to the optimal heat convection, the second cover member 12a
By moving one or both of them, the opening shape of the cover member may be adjusted so as to be optimal for heat convection.

FIGS. 8 and 9 show a fourth embodiment of the lighting device according to the present invention. FIG. 8 (a) is a side view for explaining a schematic configuration of the lighting device, and FIG. FIG. 9 is an explanatory view for explaining a movable member used in the device, and FIG. 9 is a side view showing a modification of the lighting device in FIG. In the apparatus shown in FIG. 8, the same components as those in the third embodiment are denoted by the same reference numerals, and description thereof is omitted.

In this embodiment, the plurality of mounting movable members 14 and the cover member 1 used in the third embodiment are used.
In 2a, by improving the divided cover member 12 so as to be rotatable, it is possible to further reduce the temperature rise due to heat convection and improve the deodorizing efficiency.

Specifically, as shown in FIG. 8A, at least two divided cover members 12b for covering the light emitting portion 13 of the lighting device main body 11 are provided in the same manner as in the third embodiment. The mounting movable member 14 according to the present embodiment is attached to the center of the divided cover member 12b as shown in FIG. 8 (b). By supporting the vicinity, the cover member is configured to be rotatable around the shaft 15 as a fulcrum.

That is, as shown in FIG. 8B, each of the divided cover members 12b can be freely changed to an angle desired by the user. The movable mounting member 14 attached to the cover member 12b is also the third movable member 14.
As in the embodiment described above, the structure is such that it is slidable and rotatable, so that the arrangement of the cover member 12b with respect to the lighting device main body 11 can be freely adjusted.

In the present embodiment, when the length of each cover member 12b is adjusted using the movable mounting member 14, the length of each cover member 12b and the length of the lighting device main body 11 are different from each other. Adjust and set.

By forming a path through which air flows out to the outside by thermal convection, that is, a large number of openings, the air can be circulated. Therefore, a rise in temperature caused by lighting of the light emitting section 13 is further reduced. It is possible to do.

Further, in the present embodiment, in order to improve the deodorizing efficiency, the photocatalyst coating portion 6 is provided on the surface of the lighting device main body 11 and the inner surface of each cover member 12b. That is, by increasing the region for exciting the photocatalytic reaction, it is possible to further improve the deodorizing efficiency as a result.

FIG. 9 shows a modified example of the cover member, and is a configuration diagram for explaining a schematic configuration.

This embodiment is different from the above embodiment in that a plurality of sets of cover members adjusted to the same angle and length are provided.

More specifically, as shown in FIG. 9, a plurality of sets are attached to the lighting device main body 11 via the mounting movable member 14 so as to form a pair, and further, a cover member 12b which forms a pair Are adjusted and fixed by using the respective mounting movable members 14 so as to have the same angle and length. In this case, it is necessary to provide at least one set of the pair of cover members 12b satisfying such an arrangement condition. For example, the cover member 1 adjusted to be the longest near the center of the lighting device body 11.
In the case where one 2b is provided, and three sets of cover members 12b having different lengths are arranged and mounted on both sides thereof, a lighting device is obtained as shown in FIG.

Further, also in this example, the lighting device body 1
The photocatalyst coating portion 6 is provided on the surface of the first member 1 and on the inner surface of each cover member 12b. In other words, the region for exciting the photocatalytic reaction is increased as compared with the example shown in FIG.
As a result, more deodorizing efficiency can be obtained.

According to the above configuration, since the cover member 12b has a more divided structure, the number of paths (openings) through which the air flows out to the outside by the heat convection is further increased, so that the air is removed. Can be circulated, so that the temperature rise caused by the lighting of the light emitting unit 13 can be further reduced. Further, as described above, the photocatalytic reaction region is increased, and the air circulating action is efficiently performed by the heat convection, so that a high deodorizing efficiency can be obtained.

In the present embodiment, the lengths and angles of the plurality of cover members 12b may be optimally adjusted and set so that an ideal path for thermal convection can be obtained. It is not limited.

By the way, the conventional illuminating device having a photocatalytic function does not have an air purifying function for purifying air in the space. Therefore, it is necessary to install a separate device, and the cost is high. there were.

However, in the lighting device of the present invention, by adding an air purifying function which has not been conventionally used in the lighting device, in addition to the deodorizing effect by the photocatalytic reaction, the air can be further purified. Furthermore, by using the divided cover member as a wind direction plate, the efficiency can be improved. Such an embodiment is shown in FIG.

FIGS. 10 to 13 show a fifth embodiment of a lighting device according to the present invention. FIG. 10 is a side view for explaining a schematic configuration of a lighting device provided with an air purifier, and FIGS.
Is for explaining the schematic configuration of the air purifier,
11A is a bottom view of the air purifier, FIG. 11B is a front view, FIG. 11C is a side view, FIG. 12 is a bottom view of the lighting device, and FIG. 13 is a view of the lighting device shown in FIG. It is explanatory drawing for demonstrating a heat convection path. In the apparatus shown in FIG. 10, the same components as those in the fourth embodiment are denoted by the same reference numerals, and description thereof is omitted.

In this embodiment, in the lighting device used in the third embodiment, for example, having a plurality of cover members 12a whose arrangement can be adjusted, the installation place where this lighting device is mounted and the lighting device body This embodiment is different from the above embodiment in that an air purifier is provided between the air purifier and the air purifier and the deodorizing function by the photocatalytic reaction is more efficiently performed.

Specifically, as shown in FIG. 10, there is a space between an installation place such as a ceiling or a wall and the lighting device main body 11.
An air purifier 16 is provided, and the air purifier 16 is detachably attached to the lighting device main body 11.

As shown in FIGS. 11 (a) to 11 (c), the air cleaner 16 sucks air in the space from air suction holes 17 provided on both sides, and a filter provided therein. And the like, and the purified air is blown to the lighting device main body 11 through a blowing hole 22 (see FIG. 12) provided on the lighting device main body 11 side by using a blowing means such as a fan. I do.

The air purifier 16 is provided with a predetermined number of photocatalyst promoting lamps 18, and the photocatalyst coating section 6 is provided inside the air purifier facing the photocatalyst lamps 18. ing. That is, the air purifier 16 has a deodorizing function by a photocatalytic reaction in addition to the air purifying function, and the air subjected to the deodorizing processing and the cleaning processing is used for the lighting device body 1.
1 can be blown.

Further, the air purifier 16 is provided as shown in FIG.
As shown in the figure, a ballast 20 for promoting photocatalyst and a lamp ballast 21 for lighting equipment (corresponding to the light-emitting unit 13) are mounted therein, and these ballasts can be shared and used. It is possible.

On the other hand, on the surface of the lighting device body 11, FIG.
As shown in FIGS. 1 and 12, a plurality of standing reflectors 19 are provided so as to sandwich the blowout hole 22 and the light emitting unit 13. The surface of the reflection plate 19 and the surface of the illumination device main body 11 are also provided with the photocatalyst coating portion 6.

For this reason, the surface of the lighting device main body 11 and the reflection plate 19 generate a photocatalytic reaction by the ultraviolet rays from the light emitting section 13. Further, the reflection plate 19 functions to optimally reflect the visible light from the light emitting section 13 and guide the clean air from the blowout hole 22 to the cover member 12b side.

In the example shown in FIG. 10, a plurality of the cover members 12b are attached in a state where they are fixed at predetermined positions by the attachment members. Alternatively, a structure in which the length can be adjusted may be employed.

Further, in order to improve the deodorizing efficiency, a photocatalyst coating portion 6 is provided on the inner surface of each cover member 12b. That is, by increasing the region for exciting the photocatalytic reaction, the deodorization efficiency is further improved as a result.

In the above configuration, air inflow and outflow paths are formed as shown by arrows in FIG. That is, the air is forcibly sucked in by the air purifier 16 added to the lighting device, and then the air is cleaned and deodorized by the air purifying function and the photocatalytic reaction function of the air purifier 16 to blow out clean air. Air is blown to the front side of the lighting device main body 11 through the hole 22.

Then, the blown clean air is guided to the cover member 12b by the reflection plate 19, and comes into contact with the cover member 12b. At this time, the blown air is further deodorized by a photocatalytic reaction by the photocatalytic coating portion 6 applied to the surface of the lighting device main body 11 and the surface of the cover member 12b.

Thereafter, the air inside the apparatus is blown out by the air purifier 16 to the outside through the respective cover members 12b serving as wind direction plates.

Therefore, the action of forcibly discharging clean air to the outside works, and more openings can be formed to allow the air to flow to the outside by heat convection, so that the air can flow more smoothly. It can be circulated, so that the temperature rise caused by the lighting of the light emitting unit 13 can be further reduced, and the degreasing effective rate can be improved.

In this embodiment, the case where the air purifier 16 is provided with a photocatalyst function such as a photocatalyst promoting lamp for generating a photocatalytic reaction and a photocatalyst coating portion is described. Instead, it may be provided only in the lighting device main body 11 and the cover member 12b.

Also, a case has been described in which the cover member 12b is divided into a plurality of parts and each is attached to the lighting device main body 11, but, for example, one cover member is attached to the lighting device main body 11, and By providing a plurality of insertion holes at positions, air inside the apparatus may be configured to flow out through the insertion holes to the outside.

The titanium oxide in the photocatalyst coating 6B is:
For example, those having a particle diameter of 0.3 μm or more are preferable. That is, by using titanium oxide having such a particle diameter, the diffusibility during the photocatalytic reaction is improved. Conventionally,
Although the effect of dissolving and disinfecting the dirt on the surface of the cover member was not obtained, by improving the diffusivity during the photocatalytic reaction as described above, it becomes possible to decompose the dirt, Deodorizing effects such as odor and disinfection can also be improved. The photocatalyst coating 6B may be configured to be applied to the outer surface of the cover member.

Further, in the lighting device main body 11,
A resin reflection plate is provided to effectively reflect light from the light source lamp and to insulate and protect the inverter circuit and the like, and when the cover member is made of a resin shade, the resin A photocatalyst coating portion may be provided on the surface of the reflector made of glass and the inner surface of the resin shade. Thus, conventionally, the surface of the resin-made reflection plate has been discolored to yellow or the like due to the irradiation of ultraviolet rays, but this discoloration can be prevented.

In the third to fifth embodiments according to the present invention, the use of the photocatalyst coating portion 6B made of titanium oxide or the like has been described. However, this is described in the first embodiment. The photocatalyst coating portion 6 including the used phosphor 6b may be used in place of the photocatalyst coating portion 6, and in this case, the photocatalyst coating portion 6 may be provided on the surface of the cover member or the lighting device body as necessary. good.

Further, in the third to fifth embodiments according to the present invention, the lighting device having a photocatalytic function for deodorizing efficiency construction has been described. However, the present invention is not limited to this. Even in an ordinary lighting device having no function, the above-mentioned plurality of divided cover members, the movable mounting member, and the means for reducing the rise in temperature in the lighting device such as an air cleaner may be applied.

Further, the present invention is not limited to the above embodiment, and a combination of the above embodiments does not depart from the present invention.

[0121]

According to the first and second aspects of the present invention,
Use of a light-emitting portion that promotes a photocatalyst by absorbing light emitted from the light-emitting portion, causing a photocatalytic reaction, and generating a fluorescent action by the photocatalyst coating portion applied to the inner surface of the cover member. It is possible to improve the deodorizing efficiency, and it is also possible to improve the lighting function by the fluorescent action.

According to the third and fourth aspects of the present invention, the operation is the same as that of the first aspect of the present invention. However, since the photocatalyst coating portion is mainly composed of titanium oxide, the inside of the cover member is It is possible to efficiently perform a photocatalytic reaction occurring on the surface. Further, since the cover member is configured to include a phosphor for generating a fluorescent action, the fluorescent action can be generated in the cover member. Thereby, the deodorizing efficiency can be further improved.

According to the fifth aspect of the present invention, the light emitted from the light emitting portion contains a large amount of ultraviolet light having a center wavelength of 380 nm or less, and the photocatalyst coating portion is included in the light from the light emitting portion. Excitation by the ultraviolet light makes it possible to efficiently generate a photocatalytic reaction, thereby improving the deodorizing efficiency.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram for explaining a configuration of the device in FIG. 1;

FIG. 3 is a characteristic diagram showing deodorizing characteristics of the apparatus of FIG.

FIG. 4 is a configuration diagram illustrating a lighting device according to a second embodiment.

FIG. 5 is a configuration diagram illustrating a lighting device according to a third embodiment.

FIG. 6 is an explanatory view showing a configuration of a mounting movable member used in the apparatus of FIG. 5;

FIG. 7 is a configuration diagram for explaining a modified example of the device in FIG. 5;

FIG. 8 is a configuration diagram showing a lighting device according to a fourth embodiment.

FIG. 9 is an explanatory view showing a configuration of a mounting movable member used in the apparatus of FIG. 8;

FIG. 10 is a configuration diagram illustrating a lighting device according to a fifth embodiment.

FIG. 11 is a configuration diagram showing a configuration of an air purifier used in the apparatus of FIG. 10;

FIG. 12 is a bottom view of the device of FIG. 10;

FIG. 13 is an explanatory diagram for explaining a thermal convection effect by the device of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Illumination device, 2 ... Light-emitting part (photocatalyst promotion lamp), 3 ... Body part, 4 ... Fixing member, 5 ... Cover member, 6 ... Photocatalytic coating film part, 6a ... Titanium oxide, 6b ... Phosphor, 6c ... Binder.

Claims (4)

[Claims] A light-emitting unit that emits light containing at least ultraviolet light; a cover member provided so as to surround part or all of the light-emitting unit, and reflecting or transmitting light from the light-emitting unit; A photocatalyst coating portion for applying at least one of a photocatalytic reaction and a luminescent effect by absorbing light emitted from the light emitting portion, which is provided on an inner surface of the member. Lighting equipment. 2. The photocatalyst coating portion is made of titanium oxide that generates a photocatalytic reaction when irradiated with ultraviolet rays, a phosphor that emits light, and a binder. The lighting device according to claim 1. A light-emitting unit that emits light containing at least ultraviolet light; a light-emitting unit that is provided so as to surround part or all of the light-emitting unit, reflects or transmits light from the light-emitting unit, and emits light from the light-emitting unit. A cover member including a phosphor that emits light by the emitted ultraviolet light; and a photocatalytic reaction is generated by absorbing light emitted from the light emitting portion, which is applied to an inner surface of the cover member. And a photocatalyst coating portion for the lighting device. 4. The lighting device according to claim 3, wherein the photocatalyst coating film portion is made of titanium oxide and a binder that cause a photocatalytic reaction when irradiated with ultraviolet rays.