JPH108317A - Head-protecting body for shielding electromagnetic wave from portable telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a head-protecting body for shielding an electromagnetic wave from a portable telephone for protecting the head part from the electromagnetic wave. SOLUTION: This head protecting body for shielding an electromagnetic wave from a portable telephone is obtained by forming a shielding cloth 5 as a woven or a knit fabric by weaving or knitting a shielding fiber 1, having an electromagnetic wave shielding and antibacterial effect, obtained by performing a silver plating on the surface of a nylon fiber 2, and also forming a head-covering material capable of covering the head part as an upper portion of an ear by at least a set width, by using the shielding cloth 5 so as to protect the head part, since an antenna of the portable telephone is positioned at the head part covering material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head protector for an electromagnetic wave shield of a portable telephone, which shields (shields) an electromagnetic wave with respect to a head in electromagnetic waves which are inevitably exposed in daily life.

[0002]

2. Description of the Related Art It is generally known that continued exposure to electromagnetic waves (harmful electromagnetic waves) may adversely affect the human body (autonomic imbalance, onset of carcinogenesis / tumor, etc.). As a source of this electromagnetic wave, for example, an electromagnetic cooker,
Various devices such as home appliances such as microwave ovens and televisions, OA devices such as personal computers and word processors, and automobiles are listed. In particular, as a device that has recently become a problem, there is a mobile phone used in a state where a rapidly developing aspect is directly approached or closely attached to the head.

That is, in a portable telephone, the use state is an oblique form in which the telephone body is directly pressed against the ear, and the antenna protruding from the telephone body is short even if it is integrated or extended. The electromagnetic wave (microwave) emitted from the antenna is likely to be absorbed into the head, and the energy due to the electromagnetic wave may cause abnormalities in the brain. Especially,
It is said that the effect has a great effect on a long-time call.

[0004]

In this case, as measures against electromagnetic waves to the human body, measures to restrict the amount of exposure to electromagnetic waves at workplaces using high frequency have been taken industrially. No standard has been set in the, and it is impossible to control the amount of exposure.

[0005] Further, as a conventional technique of a material for shielding electromagnetic waves, there has been a slightly deposited or plated fiber or a stretched metal fiber of nickel on a metal foil or a fiber. Each had a problem with the physical durability over a long period of time. Further, in the case where a fiber obtained by stretching a metal is used, there is also a problem that the broken fiber sticks to the body.

[0006] Conventionally, there is a textile product made of a conventional material, which has a conductive property (shielding property) by plating a high-density woven fabric. The layer was hard, the conductivity was lost by bending (there was no shielding), and practical products could not be provided.

In view of the above circumstances, the present invention provides a portable telephone which solves the above-mentioned problems by forming a silver-plated fiber as a shielding fabric material and forming a head covering with a woven or knitted fabric using the fiber. It is an object of the present invention to provide a head protector for an electromagnetic wave shield.

[0008]

SUMMARY OF THE INVENTION The present invention is directed to a shield fabric which forms a woven fabric or a knitted fabric by weaving or knitting a shielding fiber having an electromagnetic wave shielding and antibacterial action obtained by applying a silver plating to the surface of a nylon fiber. To form a head covering that covers at least a fixed width of a head portion, which is an upper portion of the ear portion, with the shield fabric.

In this case, the head covering is a hat.

The head covering is a bandana.

The head covering is a hair band.

Further, the head covering is a flocked base cloth for a wig.

[0013] In this manner, a head covering that covers a fixed width around the head portion above the ear portion is formed by the shield fabric formed by using the shield fiber in which the nylon fiber surface is silver-plated. In this case, the shape of the head covering may have a shield area for a certain width with respect to the head such as a hat or a hair band. The head covering is mounted on the head in a predetermined manner, and a mobile phone is used.
At this time, the telephone is held obliquely with the receiver of the telephone body placed against the ear and the transmitter directed toward the mouth. The electromagnetic wave oscillating from the antenna which is inevitably obliquely rearward at the position of the head covering is shielded by the shielding effect of the shielding fiber of the head covering and does not reach the inside of the head.

[0014] In this case, the head covering can have a structure used for a part or all of the material of the hat or bandana or the hair band which is usually worn, or in a specific mode, the material of the flocking base cloth for the wig. The appearance is good because the three parties do not know whether the electromagnetic wave shielding function is incorporated.

Further, since the silver-plated shield fiber material itself has a strong antibacterial action by silver ions, it prevents the putrid odor due to the sweating action and the stuffy odor on the head covering. .

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a head protector for an electromagnetic wave shield of a portable telephone according to the present invention.

FIGS. 1 to 4 show an embodiment of an electromagnetic wave shielding head protector in which a head covering is hat-shaped. Reference numeral 1 denotes a shielding fiber having an electromagnetic wave shielding and antibacterial action in which silver plating 3 is applied to the surface of a synthetic fiber, in particular, a nylon fiber 2 to a predetermined thickness by a chemical method. Occasionally, it is woven with regular fibers at regular intervals to form a shield fabric 5 for electromagnetic waves.
This shield cloth 5 is used as a known hat sewing lining 4, and is sewn in a predetermined manner in combination with a mesh-structured outer material 7 to form a hat 6 and a head covering 8. The head covering 8 serves as an electromagnetic shielding head protector 8 '. Reference numeral 9 denotes a flange. In this case, the silver plating on the nylon fiber 2 is as follows.
A thin silver layer having a thickness of about 0.2 μm is formed only on the surface of the fiber using pure silver. Further, the shield fabric 5 may be configured so as to be sandwiched between a normal outer material and a lining material of the hat.

Now, the operation will be described. First, the cap 6 serving as the head protector 8 'for electromagnetic wave shielding may be simply put on the head like wearing a normal cap (see FIG. 4). At this time, the peripheral part of the hat 6 is positioned above the ears a, and the head b is covered with the shield cloth 5 serving as the hat lining.

Here, the portable telephone 10 can be used in a short configuration as in the case of a normal portable telephone, by bringing the receiver 10a into contact with the ear a and the transmitter 10b toward the mouth. Of the mobile phone 10 in an oblique state on the side of the face, and the antenna 10 at the upper end of the mobile phone 10
Even if c is extended, it is at such a level that it is located at the position of the hat 6 and faces obliquely rearward.

For this reason, even if the portable telephone 10 is operated according to a known procedure and an electromagnetic wave which becomes a microwave is emitted from the antenna 10c, the cap 6 is positioned on the head b close to the antenna 10c, and the lining 4 Since the head is covered with the shield fabric 5 using silver-plated fiber, the electromagnetic wave is shielded by the shield fabric 5 and the head b is protected.

Further, the shield fiber 1 of the shield cloth 5 serving as the lining 4 also has the antibacterial action inherent to silver of the silver-plated fiber, so that it is possible to prevent perishable smell due to sweating action caused by wearing a hat and prevent stuffiness.

By the way, a mesh knitted fabric of the above-mentioned material was sewed on the inside of a normal hat as a test, and a wearing test was carried out. As a result, the smell adhering to the hat was reduced. It was found that it had a deodorizing function in addition to the effect of reducing the amount of exposure to electromagnetic waves.
Although the electromagnetic wave attenuation rate depends on the size of the mesh and the thickness and the number of silver-plated fibers used, it usually has an attenuation rate of 40 dB or more as shown in the graph of the electromagnetic shield characteristic measurement shown in FIG. 5, the vertical axis indicates the attenuation and the horizontal axis indicates the measured frequency, and the frequency used in the mobile phone is 800 MHz.

In the PHS telephone, radio waves of 1.9 GHz (gigahertz) are used.
It has an attenuation rate of 38 dB or more.

FIGS. 6 and 7 show another embodiment in which the head covering serving as the head protector for the electromagnetic wave shield has a bandana structure. In this case, the shielding fabric 1 is basically the same as described above, and is woven together with a shielding fiber 1 having an electromagnetic wave shielding and antibacterial effect, in which a part of a large-sized handkerchief-type fabric 11 is silver-plated 3 and is woven together during fabric weaving. The shield fabric 5 has a bandana 16 configuration (see FIG. 6).

The use of the bandana 16 serving as the head covering 8 is achieved by folding the bandana 16 to a predetermined width to form the head b
To the headband. At this time, the head b is covered at least with the lower edge of the bandana 16 having a predetermined width facing the ear a. Here, even if the mobile phone 10 is used in a predetermined state, since the antenna 10c extended to the rear of the head is located within the width of the bandana 16 wound around the head b,
Even if an electromagnetic wave is emitted, the electromagnetic wave is shielded by the bandana 16 body which becomes the shield fabric 5 and the head b is protected (see FIG. 7).

FIG. 8 shows another embodiment in which a head covering serving as a head protector for electromagnetic wave shielding has a hair band structure. In this case, a silver banded shield fiber 1 is attached to a hair band body 17 'made of a plain woven fabric or a rubber core yarn.
Is wound and knitted into a hair band 17 which does not impair the fashionability and becomes a kind of head covering 8. Here, the use of the hair band 17 having a predetermined width
Like the conventional hair band, if the lower edge of the hair band 17 is placed above the ear part a, the head b is covered, and the antenna 10c of the mobile phone 10 to be used is also located within this band width. Similarly to the above, the electromagnetic waves emitted to the head b are shielded.

FIG. 9 shows another embodiment in which the head protector for electromagnetic wave shielding is a flocked base cloth for a wig. That is, a shield fiber 1 in which silver plating 3 is applied to a fabric constituting the wig flocked base fabric 18 is woven at regular intervals to form a kind of shield fabric 5, and the wig flocked base fabric 18 is used as the head covering 8. It is. In this state, a suitable wig is applied to the wig flocking base fabric 18 to obtain a wig product. Here, when the wig is covered, the wig hair transplant base fabric 18 itself presents an electromagnetic wave shielding member of the shield fabric 5 and forms a kind of electromagnetic wave shield head protector 8 ′. The head b is protected from electromagnetic waves.

[0028]

As described above, the head protector for the electromagnetic wave shielding of the portable telephone according to the present invention uses a shielding cloth knitted or woven with a silver-plated electromagnetic wave shielding and antibacterial shielding fiber, and the ear part. By making the upper head part a head covering that covers a certain width, it becomes a head covering that has an electromagnetic wave attenuation effect, and easily shields electromagnetic waves (microwaves), which are the most problematic when using a mobile phone, Can be protected. The attenuation rate of the electromagnetic wave depends on the size of the mesh and the thickness and the number of silver-plated fibers used, but usually an attenuation rate of 40 dB or more is obtained (the electromagnetic wave cut of 40 dB is a value of 99% cut in percent). As this head covering product, silver-plated fiber has the same softness as ordinary fiber, and the shielding fabric itself is soft and maintains fashionability. Therefore, daily use such as hats, bandanas, hair bands, flocked base fabric for wigs, etc. It can be applied to various head coverings that can be used in various ways, and has a good appearance.

In addition, when silver-plated fibers are used, they can be used practically because of the excellent spreadability of silver, and maintain sufficient conductivity (shielding properties) even 100 times after washing. In addition, even a knitted or knitted material having a good air permeability with reduced density between fibers due to such good conductivity has sufficient shielding performance.

When the headgear is worn, at least the head above the ears is covered or wound, so that the antenna end is inevitably held even if the mobile phone is pressed against the ears in use. , The electromagnetic wave is not propagated into the head, so that the head is reliably protected, and there is no risk of causing a brain tumor or Alzheimer's disease.

Further, since the silver-plated fiber has a strong antibacterial action due to silver ions inherent in silver, the effect of preventing putrefaction odor due to sweating action when a hat is used is also obtained. In addition, silver-plated fibers can also be expected to have a thermal conductivity effect, and have an effect such as being able to impart heat retention if used as a lining for a head protector in cold regions.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of an embodiment in which a head protector for an electromagnetic wave shield of the present invention uses a hat.

FIGS. 2A and 2B show silver-plated shield fibers for constituting the shield fabric, wherein FIG. 2A is a side view and FIG. 2B is a cross-sectional view.

FIG. 3 is an enlarged explanatory view of the shield fabric.

FIG. 4 is an explanatory diagram showing a use state of the mobile phone.

FIG. 5 is a graph showing the electromagnetic shielding characteristics of a sample shield fabric.

FIG. 6 is a developed plan view of another embodiment in which a head protector is used as a bandana.

FIG. 7 is an explanatory view showing a use state in which the bandana is wound around a head.

FIG. 8 is a perspective view showing another embodiment in which a head protector is a hair band.

FIG. 9 is a perspective view showing another embodiment in which the head protection body is a flocked base for a wig.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shield fiber 2 Nylon fiber 3 Silver plating 6 Hat 8 Head protector for electromagnetic wave shielding 16 Bandana 17 Hair band 18 Hair transplant base cloth for wig

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location // D06M 11/83 D06M 11/00 A A41G 3/00 Z

Claims (5)

[Claims] 1. An electromagnetic wave shielding and antibacterial shielding fiber obtained by applying silver plating to the surface of a nylon fiber,
Forming a shield fabric made into a woven or knitted fabric with a predetermined weaving or knitting, and forming a head covering that covers at least a fixed width of a head portion which is an upper part of the ear with the shield fabric. Protective body for electromagnetic wave shielding of mobile phones. 2. The head protector for electromagnetic wave shielding of a mobile phone according to claim 1, wherein the head covering is a hat. 3. The head covering is a bandana.
A head protector for an electromagnetic wave shield of the mobile phone described in the above. 4. The head protector according to claim 1, wherein the head covering is a hair band. 5. The head protector for an electromagnetic wave shield of a mobile phone according to claim 1, wherein the head covering is a flocked base for a wig.