JPH1186616A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire for surely emitting ultraviolet rays for activating a photocatalyst. SOLUTION: This luminaire is constituted of fluorescent lamps 3, 4, in which passing quantity of ultraviolet is suppressed by forming, on each of their outer surfaces, a coating of a photocatalytic material exhibiting catalytic action by being exposed to ultraviolet rays, and ordinary fluorescent lamps 5, 6 which emit relatively much ultraviolet rays as compared with the fluorescent lamps 3, 4 because the coatings of that kind are not formed on their outer surfaces. By using this luminaire, appliances having a photocatalytic coating layer which is activated by ultraviolet rays can be purchased and installed without particularly worrying about the nature of ultraviolet ray generating illuminance, and contribution to popularization/spread of appliances of this kind is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device equipped with a tube-type lamp having a photocatalytic substance coating film which exerts a catalytic action by being exposed to ultraviolet rays formed on an outer surface thereof for purifying contaminants. It is about equipment.

[0002]

2. Description of the Related Art A substance having a photocatalytic function, such as titanium dioxide, is applied to the outer surface of an ultraviolet ray generating tube-type lamp such as a fluorescent lamp or a mercury lamp so that the lamp itself has a purifying ability for pollutants. Has been developed to realize a dramatic long-term maintenance of lighting performance and purify contaminated air in a space where the lamp is installed, for example, a living room (for example, Japanese Patent Application Laid-Open No. 09-7546). Patent Publication).

[0003] As a result of the prolonged lighting performance, maintenance such as cleaning work is reduced, so that the possibility of use in high places that are difficult for humans to access, in tunnels, in remote places, and in areas with poor environmental conditions is increasing.

[0004] Photocatalysts are used not only in lamps such as fluorescent lamps and mercury lamps, but also in outer surfaces of pedestrian crossings, road fences and the like exposed to ultraviolet rays of sunlight, outer window glass of buildings, glass windows for automobiles and the like. It has also been extended to the outer surface and is becoming a great help in purifying adhering dirt and maintaining the cleanliness or transparency of the surface.

[0005] Even in indoor or underground spaces where sunlight does not reach, curtains, carpets, toilet equipment, hospitals, etc. to which photocatalytic substances are added or surface-treated are placed at positions exposed to ultraviolet rays emitted from fluorescent lamps and mercury lamps. Equipment that is equipped with equipment and medical equipment, and is devised so that cleanliness is continuously exhibited, has come into practical use.

[0006]

Among the above-mentioned conventional examples, ultraviolet light emitted from a fluorescent lamp, a mercury lamp, or the like is indispensable for bringing out the ability of the photocatalytic substance in a place where sunlight does not reach.

However, when a fluorescent lamp or a mercury lamp with a photocatalyst coating treatment is used in such a place, much of the ultraviolet energy emitted from the lamp is consumed by the photocatalyst layer on the outer surface of the lamp. However, the amount of ultraviolet rays leaking further to the outside becomes extremely small, and therefore, there is a problem that the cleaning performance of the devices surface-treated with the photocatalyst cannot be sufficiently exhibited.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a lighting apparatus is formed by forming a coating film of a photocatalytic substance which exerts a catalytic action upon exposure to ultraviolet rays on an outer surface thereof. The first UV-generating bulb-type lamp, which suppresses the amount of UV light that is transmitted, and the first because the coating that suppresses the amount of UV light is not formed on the outer surface, And a second type of ultraviolet ray generating bulb type lamp which emits a relatively large amount of ultraviolet rays as compared with the above type of lamp.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Since the present invention is constructed as described above, a lighting fixture is constructed by combining a plurality of ultraviolet-generating tube-type lamps such as fluorescent lamps or mercury lamps, and by using individual lamps. Are coated with a photocatalyst coating on the outer surface and are not coated so that sufficient ultraviolet rays are not emitted while using an ultraviolet ray generating tube type lamp.

[0010] Thereby, whether a photocatalytic substance is added,
Or curtains, carpets,
When equipment such as toilet equipment and hospital equipment and medical equipment is installed, it is possible to prevent the equipment from being irradiated with ultraviolet rays, and to exert a cleaning action.

[0011] Further, since the lamp having the purifying ability purifies the air in the vicinity, the progress of dirt of the adjacent lamp having no purifying ability is also suppressed, and the entire lighting fixture is cleaned. Become.

[0012]

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

FIG. 1 shows a state in which a vessel having a photocatalyst coating film formed on a surface thereof is installed under a lighting fixture having a plurality of ultraviolet ray-generating tube-type lamps. Is a petroleum fan heater, and 2 is a fluorescent lamp lighting fixture suspended from the ceiling wall (not shown) of the room. Reference numerals 3 and 4 denote a coating film of a photocatalytic substance formed on the outer surface of the two inner layers, thereby exhibiting a purifying action on contaminants adhering or contacting and suppressing the passage of ultraviolet rays. The straight tube fluorescent lamps 5 and 6 have the above-mentioned 2 because no coating film such as the photocatalyst that suppresses the passage of ultraviolet light is formed on the outer surface.
The outer two straight tube fluorescent lamps emit relatively more ultraviolet light than the three lamps 3 and 4. Numeral 7 is a reflective umbrella which covers the upper part of these four lamps, and does not have a light-transmitting cover for insect and dust protection below the lamps 3 to 6 as shown in the figure.

A fluorescent lamp 3 having a photocatalytic coating film,
Regarding No. 4, not only the purifying action of the surface itself but also the purifying action for the contacting air are important.
It is necessary to avoid placing a transparent or translucent cover below the reflective umbrella 7 to isolate them. Further, with respect to the fluorescent lamps 5 and 6 having no photocatalytic coating film,
Since it is important that the generated ultraviolet rays reach the lower fan heater 1, it is not preferable to provide the above-mentioned covers which cannot avoid the absorption of the ultraviolet rays.

[0015] In the lamp thus constructed, of the four fluorescent lamps 3 to 6, the inner two lamps 3, 4 purify dirt substances adhering to the surface by a photocatalytic action.
A contaminant contained in the air passing in contact with the surface also has a purifying effect, and a photocatalytic coating film is formed on the surfaces of the other fluorescent lamps 5 and 6 as well as the surfaces 3 and 4 themselves. It works so as to substantially suppress the progress of contamination of the fluorescent lamps 5 and 6 which have not been performed.

The two lamps 3 and 4 on which the catalyst coating is formed do not emit a sufficient amount of ultraviolet light to activate the photocatalyst of the fan heater 1 provided below. Since the remaining two 5 and 6 are ordinary fluorescent lamps, the amount of ultraviolet radiation from the outer surface is not suppressed because the fluorescent lamps are ordinary fluorescent lamps. Will be activated. The symbol UVR in the figure indicates the ultraviolet light emitted from the fluorescent lamps 5 and 6.

As described above, in the lighting fixture 2 composed of a plurality of fluorescent lamps 3 to 6, it is possible to combine a lamp coated with a catalyst and a lamp not coated with a catalyst without applying a photocatalyst to all the lamps. Since ultraviolet rays are radiated from the lighting fixture 2, the photocatalyst on the surface of the fan heater 1 installed under the lighting fixture 2 is activated, and the intended purifying action can be exhibited. In addition, since the lamps 3 and 4 coated with the catalyst purify the air in the vicinity, the progress of dirt on the adjacent ordinary lamps is also suppressed, and the entire lighting fixture is cleaned. Will be.

Although the embodiment has been described with reference to a straight tube fluorescent lamp, the present invention is not limited to this, and a plurality of annular fluorescent lamps, a circular lamp and a straight fluorescent lamp may be used. It goes without saying that the same operation and the same effect can be obtained even if the structure is combined with an appropriate combination of ring lamps or a fluorescent lamp of any other shape. In addition, there is no difference that the same effects can be obtained and the same effects can be obtained in a lighting fixture using a mercury lamp as a light source other than the fluorescent lamp.

[0019]

As described above, if the lighting fixture of the present invention is used,
Equipment that has a photocatalytic coating layer that is activated by ultraviolet light can be purchased and installed with peace of mind without specially considering the properties of the ultraviolet light source, greatly contributing to the spread of such equipment. Is now possible.

[Brief description of the drawings]

FIG. 1 is a layout diagram for explaining a use situation of an embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 oil fan heater 2 lighting equipment 3, 4 fluorescent lamp with photocatalytic coating formed on outer surface 5, 6 fluorescent lamp without photocatalytic coating formed on outer surface 7 reflector

Claims (1)

[Claims] 1. A first ultraviolet ray-generating bulb in which the amount of ultraviolet light transmitted is suppressed by forming a coating film of a photocatalytic substance that exhibits a catalytic action by being exposed to ultraviolet light on its outer surface. Since the type lamp (3, 4) and the coating film for suppressing the passage of ultraviolet rays are not formed on the outer surface, they emit relatively more ultraviolet rays than the first lamp. The second UV-emitting tube lamp (5,
(6) A lighting fixture characterized by being combined.