JPH11162379A - Cathode ray tube with photocatalyst - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and simply prevent and suppress stains on the outer surface and deodorize the living space by efficiently utilizing a cathode ray tube itself of a television or a computer by sticking a thin film of a photocatalyst to at least a part of the outer surface of the front part of the cathode ray tube. SOLUTION: A thin film 4 of a photocatalyst is stuck to the entire surface area of the outer surface of the front part of a cathode ray tube 2 of a television 1. The thin film 4 of a photocatalyst is stuck to the outer surface of the front part of the cathode ray tube 2 by applying and firing anatase type titanium oxide alone or together with an additive such as SnO2 , WO3 , Y2 O3 added for wavelength adjustment. The thin film 4 of a photocatalyst is excited by ultraviolet rays and has a photocatalytic function and decomposes malodorous substances adhering to the outer surface of the cathode ray tube 2 due to static electricity or once adsorbed and retained on the outer surface. Consequency, by the mere use of the television 1, living space can be deodorized and refreshed without using an aromatic agent or activated carbon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CRT with a photocatalyst.

[0002]

2. Description of the Related Art Living spaces, such as dwellings and offices, where televisions, computers, and the like are installed, have various odors. Conventionally, deodorization is achieved by a method of absorbing odors with a fragrance or activated carbon.

[0003]

Since the fragrance is consumed, it needs to be replaced or replenished. Activated carbon has a limited life,
There is a problem that it is uneconomical to replace with a new one because the reproduction is difficult. SUMMARY OF THE INVENTION An object of the present invention is to effectively and easily use a cathode ray tube such as a television or a computer to prevent and suppress dirt on an external surface and to deodorize a living space.

[0004]

According to a first aspect of the present invention, a thin film of a photocatalyst is attached to at least a part of the front outer surface of a cathode ray tube. According to a second aspect of the present invention, in the cathode ray tube with a photocatalyst according to the first aspect, the photocatalyst is made of anatase type titanium oxide, and a light source for the photocatalyst is a fluorescent lamp existing in the cathode ray tube itself and / or the surroundings. There is a feature.

[0005] CRTs such as televisions and computers generate electromagnetic waves from low frequencies to X-rays and γ-rays. Among these, electromagnetic waves (light) having a wavelength corresponding to the excitation of the photocatalyst cause the CRTs to emit light. The photocatalyst attached to the front outer surface is excited to provide the ability to decompose organic matter. Various organic substances, such as odor components, which are attracted to and adhere to the front outer surface of the cathode ray tube by static electricity are decomposed by the photochemical reaction of the photocatalyst, and finally, carbon dioxide (CO ₂ ), water (H ₂ O) It becomes harmless substances etc., or H ₂ sO _4, but generates the like HNO _3, H ₂ sO ₄ and HNO ₃ may result which can be removed by wiping easily surface with a damp cloth, a cathode ray tube before outer Surface contamination can be prevented and suppressed. In addition, components that cause odors in living spaces such as houses and offices (hydrogen sulfide, methyl mercaptan, trimethylamine,
Ammonia or the like) comes into contact with or comes into contact with the vicinity of the front outer surface of the cathode ray tube to which the thin film of the photocatalyst is attached, and is similarly decomposed to become a component that does not cause a bad smell, so that the living space can be deodorized. Aids, such as fans, fans, and air conditioners, should be used to guide the air in the living space to this surface using a fan, fan, or air conditioner to help the malodorous components contact the front outer surface of the cathode ray tube with the thin film of photocatalyst. Is preferred.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The photocatalyst used in the present invention promotes its catalytic reaction by irradiation with light, and the type thereof is not limited. For example, titanium oxide (TiO ₂ ), iron oxide (Fe ₂ O ₃ ), tungsten oxide (WO ₃ ), tin oxide (SnO ₂ ), bismuth oxide (Bi ₂ O ₃ ), nickel oxide (NiO), copper oxide (C
u ₂ O), zinc oxide (ZnO), strontium titanate (SrTiO _3), silicon oxide (SiO _2), molybdenum sulfide (MoS _2), indium phosphide (InP),
Gallium phosphide (GaP), indium lead (InPb)
And n-type and P-type semiconductors such as, for example, platinum (Pt), rhodium (Ru), niobium (Nb), copper (Cu), tin (Sn), and ruthenium oxide (RuO ₂ ) for higher activity. And a solid photocatalyst of a semiconductor supporting a metal or metal oxide such as nickel oxide (NiO), a ruthenium (Ru) complex such as a ruthenium bipyridyl complex, and a molecular photocatalyst such as porphyrins and chlorofile. In the present invention, one or more of these photocatalysts can be used. Among these, anatase type titanium oxide can be preferably used. As a method for preparing the above-mentioned photocatalyst, in the case of a solid photocatalyst, in the case of a commercially available product, a high-temperature baking of other metal, electrolytic oxidation, chemical vapor deposition, vacuum vapor deposition, coating, coprecipitation, vapor oxidation of metal halide, etc. Can be given as an example.

[0007] The light energy of the light irradiation used is to excite the photocatalyst so as to have the ability to decompose organic substances, as described above, and to have a wavelength corresponding to the excitation of the photocatalyst. It is desirable to irradiate light having a visible wavelength or an ultraviolet wavelength. In the present invention, the electromagnetic wave (light) generated by the cathode ray tube itself is mainly used, but other light energy sources include a natural light source of sunlight, light emitted from a mercury lamp, light generated from a filament lamp such as a halogen lamp, and short-circuit. An artificial light source such as an arc cannon light, a semiconductor laser beam, an ultraviolet lamp, a black light, a fluorescent light, and a blue LED may be used. These may be used in combination of one or more.

As a method of irradiating light from another light energy source, there is a method of irradiating the photocatalyst from outside. Also, to increase the light intensity, Fresnel lens,
The light may be collected by a glass lens or the like, and the light energy may be transported by an optical fiber.

FIG. 1 shows a CRT with a photocatalyst according to the present invention.
It is explanatory drawing which shows the obtained television. This TV 1 is Brow
Tube 2 is housed in a box 3 and is in front of the cathode ray tube 2.
A thin film 4 of a photocatalyst is attached to the entire outer surface. light
The catalyst thin film 4 is made of anatase-type titanium oxide alone or at a wavelength.
SnO for adjustment _Two , WO_Three , Y_Two O_Three Additives such as
The entire outer surface of the cathode ray tube 2 using the material to which
And applied by sintering or the like. photocatalyst
The thin film 4 is excited by ultraviolet light as described above,
It has a catalytic action, and on the outer surface of the cathode ray tube 2 due to static electricity
Decomposes bad odor substances that have adhered or are once absorbed and held. This
In front of the CRT 2 even if the TV 1 is used for a long time
Odorous substances attached or adsorbed on the outer surface are decomposed,
It was kept in a clean state with low odor. Also this tele
Various odors did not drift in the living room where Bi1 was placed. Also
H generated when decomposing malodorous substances_Two SO_Four There
Is HNO_Three Etc. can wet dust on the surface of the cathode ray tube 2
It can be easily removed at the same time as cleaning with a width etc.
The surface could be refreshed.

FIG. 2 is an explanatory diagram showing a computer provided with a CRT with a photocatalyst according to the present invention. The computer 5 has a cathode ray tube 6 housed in a box 7, and a photocatalyst thin film 8 is attached to the entire front outer surface of the cathode ray tube 6. Reference numeral 9 denotes a small fan arranged in the box 7, which guides the air in the living space to the surface of the photocatalytic thin film 8 on the front outer surface of the cathode ray tube 6 of the computer 5 as indicated by an arrow, and The container 7 is inserted into the box 7 through an inlet 10 provided on the side surface of the box 7 and discharged out of the box 7 from an outlet (not shown). In this embodiment, the inlets 10 for taking in air are provided on both sides of the box 7, but the upper surface of the box 7,
Any of the lower surface, the periphery of the front outer surface of the cathode ray tube 6, or a combination thereof may be provided. Even when the computer 5 was used for a long period of time, the malodorous substances adhering or adsorbing to the front outer surface of the cathode ray tube 6 were decomposed and maintained in a clean state with a reduced odor. In the living room where the computer 5 was placed, various odors did not drift. In addition, H ₂ SO ₄ or HNO ₃ generated when decomposing odorous substances can be easily removed at the same time as cleaning the surface of the cathode ray tube 6 by wiping with a wet cloth, etc.
The surface could be refreshed.

Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the appended claims.

[0012]

The CRT with a photocatalyst of the present invention can be used as a CRT for a television or a computer. An external light source may be used.Even if an external light source is not used, simply using a TV or a computer, etc., can easily and easily prevent and control the stain on the external surface of the cathode ray tube, or use a fragrance or activated carbon. The living space can be deodorized and refreshed without using any other means.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a television provided with a CRT with a photocatalyst according to the present invention.

FIG. 2 is an explanatory view showing a computer provided with a CRT with a photocatalyst of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Television 2, 6 CRT 3, 7 Box 4, 8 Photocatalytic thin film 5 Computer 9 Small fan 10 Entrance

Claims (2)

[Claims] 1. At least one of the front outer surfaces of a cathode ray tube
A CRT with a photocatalyst, wherein a thin film of a photocatalyst is adhered to a portion. 2. A CRT with a photocatalyst according to claim 1, wherein the photocatalyst is made of anatase type titanium oxide, and a light source for the photocatalyst is a cathode ray tube itself and / or a fluorescent lamp existing around.