JPH06209985A - Sterilization treatment in room - Google Patents

Abstract

PURPOSE:To surely sterilize the bacteria in a room in a simple manner, by utilizing the sterilization action of photocatalysts by attaching the photocatalysts on the wall surface forming the inside of the room and radiating light on the surface of the wall surface, when the inside of the room in which bateria float is sterilization-treated. CONSTITUTION:When the inside of a room in which bacteria float is sterilization-treated, photocatalysts are applied onto the surface of the wall surface forming the room inside, and the sterilization action of the photocatalyst is utilized by radiating the light on the surface of the wall surface, and the bacteria in the room are surely sterilized in a simple manner. Specifically, the wall surface of the room inside is formed from tiles 1, and the tile 1 is applied with titanium oxide as photocatalyst. As the light radiated on the photocatalyst, is used the common lighting for the room inside, e.g. a fluorescent lamp 2. Accordingly, the necessity of man's labor for disinfection is obviated, and the bacteria adhering onto the wall surface in the room can be sterilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sterilizing indoor air in which bacteria are suspended, and particularly to a method effective for sterilizing in a hospital.

[0002]

Bacteria and dust floating in a room are mostly discharged to the outside by an air purifier or a ventilation means in the room.
Bacteria attached to indoor wall surfaces cannot be eliminated without taking sterilization measures such as disinfection. Most of the bacteria adhere to the wall surface inside the room, and depending on the bacterial species and location, they also cause reproduction. Further, in recent years, nosocomial infections in hospitals have become a major problem, and as a countermeasure against this, disinfection of hospital rooms, medical devices, doctors, etc. is currently performed.

[0003]

The above-mentioned disinfection requires manpower and equipment, and in particular, disinfection in a hospital is carried out regularly and frequently, so that considerable effort is spent. ing.

The present invention has been made in order to eliminate such conventional problems as much as possible, and an object thereof is to make it possible to sterilize indoor bacteria at all times by utilizing the sterilizing action of a photocatalyst. It was made.

[0005]

In order to achieve the above object, the present invention provides a sterilization method in a room in which bacteria are suspended,
It is characterized in that a photocatalyst is carried on the surface of a building material forming a wall surface, and the surface of the building material is irradiated with light.

It is considered that the bactericidal action of the photocatalyst is caused by the oxidation / reduction reaction by electrons and holes generated by the photoexcitation of the photocatalyst, which causes the respiratory inhibition by the oxidation of the scavenging enzyme in the cell.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing an embodiment of the present invention, in which a tile 1 carrying titanium oxide as a photocatalyst is attached to the interior wall surface. 2 is a fluorescent lamp,
It is arranged so that the wall surface can be illuminated.

Examples of the photocatalyst include semiconductors such as titanium oxide, iron oxide, tungsten oxide and nickel oxide.
These can be used alone or in combination. Further, metals such as platinum, rhodium and copper may be added to these semiconductors. These photocatalysts can be used in the form of powder, colloid, liquid, plate, etc.
It may be supported by various methods. For example, as a method for supporting the tile, there is a method in which titanium oxide sol is applied to the surface of the tile and then baked to support the titanium oxide sol in consideration of its adhesiveness. Further, the photocatalyst may be supported on a cloth body folded into a fibrous shape and attached to the wall surface.

As a light source for irradiating the photocatalyst surface with light,
In addition to general lighting, sunlight can be used if it is a wall surface that is exposed to sunlight during the day. Further, the light irradiation may be performed intermittently or periodically after observing the attachment status of sterilization.

[0009] Further, because the wall surface cannot be illuminated with light at night,
A noble metal such as silver having its own bactericidal action may be used in combination where the bactericidal action is impaired.

[0011]

As described above, according to the present invention,
With a simple configuration in which a photocatalyst is supported on the wall surface and light is irradiated, bacteria attached to the wall surface can be sterilized without disinfection, so that there is no need for human labor as in the past.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

Claims (3)

[Claims] 1. A method for sterilizing an interior of a room in which bacteria are suspended, wherein a photocatalyst is supported on the surface of a building material forming a wall surface.
The interior sterilization method is characterized in that the surface of the building material is irradiated with light. 2. The indoor sterilization method according to claim 1, wherein general indoor lighting is used as a light irradiation method. 3. The indoor sterilization method according to claim 1, wherein tiles are used as the building material.