JPH11131946A - Interior sunshade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To raise the cleanliness of an interior sunshade and purify interior air by covering the surface to shield the exterior light of an interior sunshade with an optical catalyst, and feeding interior air on the shielding surface of exterior light by means of a fan that is driven by a solar cell. SOLUTION: Vertical ropes 1, 2 are suspended from an upper bracket in the vicinity of a window glass W. A number of connection ropes 3 are crossed over between each vertical rope 1, 2 for connecting a number of slats 4. By an operation rod joined to the vertical ropes 1, 2, the vertical ropes 1, 2 are operated to allow the blind to open and close and inclined for controlling exterior light. Deodorizing paper 5 is adhered to the recessed surface 4a of the slats 4 having an arcuate cross-section. The deodorizing paper 5 has optical catalystic powder such as TiO2 contained therein to then be subjected to press or the like. The fan 6 driven by means of a solar cell 7 is installed under the blind, and when receiving exterior light, the fan 6 is driven in order to feed interior air between the blind and the window. When receiving in their recessed part 4a of the slats 4, an optical catalystic reaction becomes so brisk that interior air is purified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sunshade installed in a vehicle such as an automobile or a train or on the indoor side of a window of a room, and more particularly to a sunshade having a gap between a window glass and the sunshade.

[0002]

2. Description of the Related Art Conventionally, as a sunshade for indoor use, a film-like or sheet-like member that is in close contact with a window glass, or a plurality of open / closed flat blade-like members (slats) provided at a position slightly apart from the window glass. ), A so-called venetian blind, a sheet-shaped roll blind, and a normal curtain.

[0003]

Among the above-mentioned sunshades, those which can be opened and closed can selectively take in external light into the room. Therefore, the convenience is high, but the surface for shielding external light, that is, Venetian sunshade. It is said that dust and the like easily adhere to the slat surface of the blind, the sheet surface of the roll blind, and the surface of the curtain, and the odor components and various germs generated in the room directly adhere to the dust or the surface. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has a main object to provide a room provided at a position slightly apart from a window glass and through which room air can pass. An object of the present invention is to improve the cleanliness of a sunshade and to purify indoor air.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided an indoor sunshade installed in a room for shielding external light, wherein a part or all of a surface for shielding external light is provided. By covering only with a photocatalyst or a photocatalyst and an adsorbent. In particular, the solar cell is disposed on the surface that shields the external light, and is driven by the solar cell to supply the room air to only the photocatalyst or the external light shielding surface covered with the photocatalyst and the adsorbent. It is better to have a fan.

[0006]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1A is a sectional side view of a principal part of a venetian blind showing a first embodiment to which the present invention is applied. As shown in FIG. 1A, in the vicinity of the window glass W, a plurality of pairs of longitudinal cords 1 and 2, which form a pair in the front and rear, hang downward from an upper bracket (not shown). Each vertical cord 1, 2
A large number of connecting cords 3 are stretched between them at predetermined intervals. A large number of slats (flat blades) 4 are engaged with the strings 1 and 2 and the connecting string 3, and are arranged horizontally at predetermined intervals. Then, by operating an operating rod or a string (not shown) connected to the vertical strings 1 and 2 and pulling both the vertical strings 1 and 2 upward, each slat 4 is moved so as to gradually overlap from the lower end thereof. That is, the blinds are opened so that the outside light can be introduced into the room without blocking at all. Also, as shown in FIG. 1B, by pulling only one of the vertical string 1 and the vertical string 2 to a certain extent upward (or by loosening only one of the strings), The main surface is tilted to a position where the main surface becomes substantially vertical, so that external light is blocked.

Each of the slats 4 has an arc-shaped cross section, and a deodorized paper 5 is attached to the concave surface 4a side. The deodorized paper 5
Metal oxides such as TiO ₂ (e.g., TiO ₂ obtained by mixing a crystalline and amorphous) shall photocatalyst consisting of the powdered and below to the adsorbent powder (Photocatalyst> adsorbent), narrowing the paper making the fibers, It is a paper-like body formed by pressing and drying.

Here, when the photocatalyst powder gives energy, electrons are excited and holes are generated. These holes come into contact with malodorous component molecules on the surface of the photocatalyst powder to cause an oxidative decomposition reaction. For example, the above-mentioned titanium oxide can cause an oxidative decomposition reaction by applying energy effectively and easily with ultraviolet rays. The titanium oxide has a crystal structure of an anatase type and preferably has a specific surface area as large as possible.

[0010] On the other hand, in order to carry out the reaction by the photocatalyst efficiently, it is important to bring malodorous component molecules into contact with the photocatalyst as much as possible. Therefore, in this configuration, first, the malodor component molecules are adsorbed by the adsorbent, and the malodor component molecules captured by the adsorbent are oxidized and decomposed by titanium oxide. This adsorbent depends on the type and concentration of the odor to be deodorized, but since the odor that is generally generated contains several types of complex components, the odor is classified as acidic, neutral, or basic. When it does, it is desired to be effective for all of them. Such adsorbents may be impregnated with charcoal or, for example, Japanese Patent Application Laid-Open No.
It is preferable to use silica gel, zeolite, sepiolite, mizcanite, activated carbon, and the like as described in JP-A No. 6-No.

The fiber serving as the base of the paper is not a commonly used pulp but an inorganic fiber such as glass fiber so that the paper itself does not decompose or collapse by the oxidative decomposition power of the photocatalyst. Ceramic fiber, metal fiber,
Activated carbon fibers and sepiolite fibers having an adsorption function are suitable. When paper is formed using these fibers,
It is possible that the strength is not enough, but 5%
5% to 10% of ２０20% heat-fused fiber (eg, polyethylene, polypropylene, polyester, etc.) and liquid emulsion binder (eg, acryl, urethane, etc.)
The addition improves the strength and eliminates such a problem.

As a method of introducing and supporting the photocatalyst powder between the fibers of the paper-like body or at the point of confounding, it is preferable to use a wet papermaking method as in the case of making ordinary paper. In practice, a papermaking machine mixes the fiber serving as the base of the paper, the photocatalyst powder, and the adsorbent powder, and further adds heat-fused fibers and an emulsion binder for improving the strength of the paper. At this time, most of the photocatalyst powder, adsorbent powder, and emulsion binder fall off from the mesh at the time of paper making,
Since it cannot be sufficiently supported and the yield is deteriorated, it is preferable to use a fixing agent for bonding the powder and the fiber to prevent falling off. The powder also agglomerates due to the fixing agent and does not fall off the mesh. Then, it presses and is dried at the temperature more than the fusion temperature of a heat fusion fiber, and a paper-like object is obtained.

Next, the operation of the venetian blind having the deodorizing function will be described. First, usually, as shown in FIG. 1A, the outside can be visually recognized, and a certain amount of external light enters the room. Then, when the irradiation amount of sunlight increases, each slat 4 is tilted as required to block external light. At this time, each slat 4 is tilted by tilting so that the concave surface 4a side faces the outside.
The odorous components and various germs adsorbed by the adsorbent on the concave surface 4a are decomposed by the interaction between ultraviolet rays of sunlight and the photocatalyst.
Further, malodorous components and the like contained in the air passing therethrough are also adsorbed and decomposed. Since the photocatalyst also decomposes oil and the like, the oil component floating in the air does not adhere to the photocatalyst, so that the photocatalyst is hardly contaminated.

FIG. 2A is a side sectional view of a principal part of a venetian blind showing a second embodiment to which the present invention is applied. The same reference numerals are used for the same parts as in the first embodiment. And a detailed description thereof will be omitted. In the present embodiment, a fan 6 driven by a solar cell 7 is provided below the blind. When the solar cell 7 receives the external light, the fan 6 is driven to circulate the indoor air so as to supply the air between the blind and the window. In particular, FIG.
As shown in (b), when light is supplied to the concave surface 4a of each slat 4 and the indoor air comes into contact with the concave surface 4a of each slat 4 in a state where the photocatalytic reaction is active, the indoor air is also efficient. Is cleansed. In addition, by making the fan 6 driven by a solar cell, not only energy saving but also
The timing at which the photocatalytic reaction is activated coincides with the timing at which room air is supplied to the concave surface 4a of each of the slats 4, so that the air is efficiently purified. Other configurations are the same as those of the first embodiment.

FIG. 3A is a side sectional view of a principal part of a venetian blind showing a third embodiment to which the present invention is applied. The same reference numerals are used for the same parts as those in the first embodiment. And a detailed description thereof will be omitted. In the present embodiment, the first
Each of the slats 4 has an arc-shaped cross section as in the case of the first embodiment, but deodorized paper 5 is attached to both the concave surface 4a and the convex surface 4b. Therefore, as long as the external light (sunlight) enters the window regardless of the tilt position of the slat 4, the photocatalytic reaction is actively performed, and both surfaces of the slat 4 and the indoor air are efficiently cleaned. Other configurations are the same as those of the first embodiment.

In the first to third embodiments, the light deodorizing paper is attached to the surface of the slat of the blind. However, the photocatalyst and the adsorbent may be applied in the form of a paint and directly applied to the surface of the slat. May be fixed. Although the venetian blind has been described in the first to third embodiments, other blinds such as a roll blind, a curtain, a blind, and the like also have the same surface as that in each of the above-described embodiments for blocking external light. A similar effect can be obtained by adopting a simple structure. When the slats 4 are tilted by sticking the deodorizing paper 5 on the convex surface 4b side, the slats 4 face the indoor side, and a similar effect can be obtained by the ultraviolet light contained in the room light.

[0017]

As is clear from the above description, according to the indoor awning of the present invention, a part or all of the surface for shielding external light is covered by only the photocatalyst or the photocatalyst and the adsorbent. The odor components, various germs, mold, and indoor organic substances (oil, tobacco, etc.) adhered to the shielding surface can be removed to clean the sunshade, and the maintenance easiness such as cleaning can be improved. At the same time, odors, harmful components, germs, and organic matter in the room, such as formaldehyde generated from new building materials, are also decomposed and purified, thereby providing a comfortable living space in the room. Especially,
By supplying the room air to the external light shielding surface by the fan driven by the solar cell, the purification of the room air is further promoted. In addition, when the fan is driven by a solar cell, the timing at which the photocatalytic reaction is activated coincides with the timing at which room air is supplied to the external light shielding surface, so that the air is efficiently purified.

[Brief description of the drawings]

FIG. 1A is a side sectional view of a principal part of a venetian blind showing a first embodiment to which the present invention is applied, and FIG. 1B is a diagram illustrating an operation procedure of the present embodiment together with FIG.

FIG. 2 (a) is a sectional side view of a principal part of a venetian blind showing a second embodiment to which the present invention is applied, and FIG. 2 (b) together with FIG.

FIG. 3A is a side sectional view of a principal part of a venetian blind showing a third embodiment to which the present invention is applied, and FIG. 3B is a diagram illustrating an operation procedure of the present embodiment together with FIG.

[Explanation of symbols]

 1, 2 vertical cord 3 connecting cord 4 slat 4a concave surface 4b convex surface 5 deodorizing paper 6 fan 7 solar cell

Claims (4)

[Claims] Claims: 1. An indoor sunshade installed indoors for shielding external light, wherein a part or all of a surface for shielding external light is provided with a photocatalyst only.
Alternatively, an indoor awning covered with a photocatalyst and an adsorbent. 2. A solar cell disposed on a surface for shielding the external light, and the solar cell for supplying the room air only to the photocatalyst or an external light shielding surface covered with a photocatalyst and an adsorbent. The indoor awning according to claim 1, further comprising a driven fan. 3. The photocatalyst, or the photocatalyst and the adsorbent, are in the form of a paint and are applied to part or all of the surface for shielding the external light to cover the surface. The indoor awning according to claim 2. 4. The photocatalyst, or the photocatalyst and the adsorbent, are supported on a sheet-shaped carrier, and the carrier is covered by being attached to part or all of the surface that shields the external light. The indoor awning according to claim 1 or 2, wherein: