JP2000210162A - Mattress - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain an antibacterial property, an antifouling property and a deodorant property by including a photocatalyst material at least in the upper end sections of lugs erected on a mattress base section, and exposing the photocatalyst material on their apexes. SOLUTION: Two mattress portions located at both ends in the longitudinal direction of a mattress have base sections extended in the lateral direction at the lower end sections, and many lugs 24 are erected on them respectively. The upper end portions 34 of the lugs 24 contain a photocatalyst material, and the photocatalyst is exposed at least on the surfaces of the lugs 24. The portion of the mattress except for the apexes 34 can be formed with normal foam polyurethane, for example, the body pressure applied to a lying person is properly distributed, and such a problem as a blood circulation disorder does not occur. The photocatalyst material is exposed on the surfaces of the lugs 24. Even when the moisture and waste products emitted from a human body are brought into contact and stuck to the apexes of the lugs 24, they are decomposed by the photocatalyst material, this action is extremely desirous sanitarily, and it has a bedsore preventing effect for a bedridden old person.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a mattress, and more particularly, to a mattress comprising a rectangular base extending in a plane, and a large number of projections standing on the base. Matters related to improvement.

[0002]

2. Description of the Prior Art Mats such as those described above are known per se. Since a person lays directly on such a mat or through a fabric, moisture and wastes radiated from the skin of the person adhere to the surface of the protrusion,
Accumulates, poor hygiene. In particular, in the case of a person who has not been turned over, such as a bedridden elderly person, the destruction of capillaries leads to the destruction of body tissues due to the local concentration of body pressure, which causes pressure ulcers. Such unsanitary conditions on the part surface accelerate this.

[0003] The present inventor has focused on photocatalytic substances which have recently been used in various fields for antibacterial, antifouling, and deodorant purposes, and have conceived of using them in the above-mentioned mattress.

[0004]

In a mattress having a rectangular base formed entirely of a synthetic resin foam and extending in a rectangular shape, and a number of protrusions erected on the base, at least the upper end of the protrusion is provided. The portion contains a photocatalytic substance, and the substance is exposed on the top surface.

[0005]

As described above, in the present invention, since the photocatalytic substance is exposed on the surface of the projection, the moisture and wastes radiated from the human body may come into contact with and adhere to the top surface of the projection. Is also decomposed by the photocatalytic substance, which is extremely preferable for hygiene, and is also effective in preventing pressure ulcers in bedridden elderly people.

[0006]

1 to 4 show an embodiment of the present invention.

[0007] Reference numeral 10 denotes the entire mattress, and the mattress 10 is formed separately from three portions, one end portion 12, an intermediate portion 14, and the other end portion 16 in the longitudinal direction. These three mattress parts 12, 14, 16 can be stored and used in the same cover 18 (FIG. 4).

Each of the two mattress portions 12 and 16 located at both ends in the longitudinal direction of the mattress 10 has bases 20 and 22 extending at the lower end thereof in the left-right direction, and projections 24 and 26 are provided thereon, respectively. It is erected. The projections 24 are aligned on the base 20 in a straight line in the width direction and the longitudinal direction of the mattress 10. Similarly, the protrusions 26 are aligned on the base 22.

Similarly, the central portion 14 of the mattress 10 is also integrally formed from a base portion 28 extending in the left-right direction and a projection 30 erected thereon. Similarly, the protrusions 30 are aligned in a straight line in the longitudinal direction and the width direction of the mattress 10. Two adjacent protrusions 24, 24; 26, 2
6; 30, 30; 24, 30; 26, 30 have a cut portion 32 provided in a curved shape. Thereby, the lower part of each projection is narrowed.

A feature of the present invention resides in that a photocatalytic substance is contained in the upper end portion 34 of the projection. It is important that the photocatalytic substance is exposed at least on the surface of the protrusion 34.

A photocatalyst is a photocatalyst that emits light (ie, excitation light) having an energy (ie, shorter wavelength) larger than the energy gap between the conduction band and the valence band of the crystal. A substance that can generate conduction electrons and holes by excitation of electrons (that is, photoexcitation) in the electron band. The strong reducing power of electrons generated by photoexcitation and the strong oxidizing power of holes are used for decomposing organic substances and decomposing water.

The types of photocatalysts usable in the present invention include titanium oxide, zinc oxide, tin oxide, ferric oxide, bismuth trioxide, tungsten trioxide, strontium titanate, zirconium oxide, chromium oxide, and molybdenum oxide. There is no particular limitation on oxides such as ruthenium oxide, germanium oxide, lead oxide, cadmium oxide, copper oxide, and vanadium oxide, or silver. One of these photocatalysts may be used alone, or two or more may be used in combination. Among the photocatalysts described above, it is preferable to use titanium oxide (TiO ₂ ) because it is designated as a food additive and has high safety for the human body.

As titanium oxide, anatase type titanium oxide or rutile type titanium oxide can be used, and it is preferable to use titanium oxide having a large specific surface area. One example is Sakai Chemical's SSP-25 equivalent product (specific surface area 27
0 m ² / g X-ray particle size 9 nm). Antibacterial metals such as silver, copper, and zinc and / or coloring pigments can also be added to such titanium oxide. Further, a platinum group metal such as platinum, palladium, ruthenium, rhodium, iridium, and osmium can be added alone or in combination of two or more. By adding a platinum group metal, the redox activity of the photocatalyst can be enhanced, and the decomposability of organic contaminants and toxic gases and odors can be improved. Conventionally known pigments can be used.

Although the protrusion 30 and the protrusions 24 and 26 are formed of the same material, the protrusion 30 in the central portion 14 of the mattress 10 is more likely to be formed because the former has a larger sectional area as described above. Has great rigidity.

In the illustrated embodiment, each of the projections 24, 2
The tops 34 of 6, 30 are formed of different materials. That is, the portion of the mattress other than 34 can be formed, for example, from ordinary foamed polyurethane, and the upper layer portion 34 can be formed from foamed polyurethane having a low rebound resilience. In this way, the body pressure applied to the person sleeping on the mattress is properly dispersed, and there is no problem such as impaired blood circulation. However, the scope of the present invention is not limited to the illustrated embodiment.

FIG. 5 shows a mattress 110 according to a second embodiment of the present invention. 3 parts 11 separated from each other
In each of 2, 114 and 116, the protrusions located on the four circumferences are formed relatively larger than the protrusions located at the center. That is, the projections a,
A is a relatively small square when viewed in a plane. On the other hand, the protrusions b and B located on both sides extending in the longitudinal direction of the mattress are formed to be elongated in the width direction of the mattress. The protrusions c and C located at both side ends of the mattress 10 extending in the width direction are formed to be elongated in the longitudinal direction of the mattress. The projections d and D located at the four corners are substantially square in plan view, and are larger than the projections a and A located at the center. The cutting part 132 is
It is deeper at the center 114 than at both ends 112, 116.

In any of the above embodiments, the mattress is formed separately from each other at three portions of the longitudinal end portions 12, 16 and the central portion 14, so that the mattress is formed at the boundary region between two adjacent portions. The hardness of each part does not influence each other, and the desired hardness is realized in each part. Specifically, in the first embodiment, the part 1
Assuming that 2, 14, 16 are connected, the projection 30 of the central portion 14 sinks relatively large due to the large weight of the human chest and waist. In particular, when the protrusion 30 located near the boundary between the central portion 14 and the other portion 12 or 16 sinks, a specific portion of the base 28 at which the protrusion 30 is located is also compressed downward, and At the base 20 or 22 of the adjacent part 12 or 16
Then, a portion near the boundary with the central portion 14 is compressed in the horizontal direction. As a result, the protrusion 24 located at this location,
26 becomes difficult to be deformed downward. That is, the protruding portions 24 and 26 near the boundary are harder than expected. Therefore, on such a mattress, a person's body is not stably held in an intended horizontal state. However, in the above-described embodiment, since the three portions 12, 14, and 16 are provided separately, even if a portion near the boundary with the adjacent portions 12, 14 in the base portion 28 of the central portion 14 is deformed,
This deformation does not affect the adjacent parts 12,14.
Therefore, when a person lays down on such a mattress, the expected horizontal state is more stably achieved.

[0018]

As described above, in the present invention, since the photocatalytic substance is exposed on the surface of the projection, the moisture and wastes radiated from the human body can contact and adhere to the top surface of the projection. Even so, it is decomposed by the photocatalytic substance, which is extremely preferable for hygiene, and is effective in preventing bedridden elderly persons from pressure sores.

[Brief description of the drawings]

FIG. 1 is a plan view of a mattress according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a portion II in the preceding figure.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a partially omitted perspective view showing a state where the mattress of FIG. 1 is stored in a cover.

FIG. 5 is a perspective view of a mattress according to another embodiment of the present invention, in which a part of the mattress is omitted.

[Explanation of symbols]

 10,110 Mattress 20,22,28,120,122,128 Base 24,26,30,124,126,130 Projection

Claims (1)

[Claims] 1. A mattress comprising a base made of synthetic resin foam and extending in a rectangular shape, and a number of protrusions erected on the base, wherein at least an upper end of the protrusion has a photocatalyst. A mattress comprising a substance, the substance being exposed on the top surface.