JPS62159663A - Sun ray bathing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a health maintenance device used while sunbathing.

This provides a screen of thermoplastic material that is specially constructed to provide shielding from the acute or chronic health effects of intense visible and infrared radiation, as well as dangerous invisible shortwave ultraviolet radiation. However, at the same time, this device allows safe tanning by passing long-wave ultraviolet light. The screen is. When exposed to natural sunlight that reaches the Earth's surface, it absorbs the major components of the sun's rays (i.e., shortwave ultraviolet light, ultraviolet B, intense visible white light, and infrared light) that cause dangerous erythematous or genetic damage. Configured to exclude sunbathers.

Various attempts have been made in the past to create truly safe solar screens, using chemical absorbers to simply isolate the harmful shortwave UVB (e.g. Gallow).
U.S. Patent No. 239195 for Solv.
(French Patent No. 2,236,195 to Olvay et Co), mechanically treating thermoplastic resins or their threads to impart UV absorbing properties (British Patents Nos. 1,540,568 and 1,580,975 to Solvay et Co., supra); Alternatively, glass fine particles may be included in the supporting resin.

and each has unique but additional absorption properties. resulting in a multilayer laminate (Mutzh
British patents 1586687 and 1567979 for
(No. 1, US Pat. No. 4,200,360), at best only removes dangerous shortwave ultraviolet B.

These are generally ineffective.

All previous attempts have failed to eliminate or reduce all three types of dangerous rays, which are believed to synergistically form a very serious and threatening environment for beauty and health. There wasn't.

Recognizing that UV rays are harmful to health, U.S. health education and social workers have advocated for occupational exposure limits to UV rays, including natural sunlight, and there have been calls by medical practitioners for even stricter limits on UV rays. is being carried out.

Recently, an advisory committee of the US Food and Drug Administration re-examined commercially available topical sunscreens.

Excessive sun exposure induces premature aging of the skin and skin cancer, and improved, common use of the above products will reduce the chance of premature aging of the skin and skin cancer.

Also, an apparently successful glass filter has been created to protect the eyes from extremely dangerous deep ultraviolet (UV-0) radiation, which is artificially emitted by electric carbon arc welding equipment, and
It is used. However, these glasses are coated with a water-soluble green dye called "filter blauglieren" (
A total UV blocker such as British Patent No. 1060780 is used.

These are because they remove harmless ultraviolet A in the same way as ultraviolet B and ultraviolet C, which can damage your eyesight.

Totally unsuitable for sunbathing.

Hence the drawbacks of these traditional screens.

Either they are too expensive to manufacture, they only protect sunbathers from ultraviolet B but not overheating or thermal infrared radiation, or they remove all ultraviolet radiation and, along with it, prevent sunburn. None of the above-mentioned inventions can protect sunbathers from dangerous intensities of visible or infrared radiation, which are considered to be as dangerous as ultraviolet B with respect to carcinogenicity and skin aging. Although there are slight differences in the definition of sunlight on Earth, shortwave ultraviolet rays (
It is considered to be composed of UV-B (290-320 nm), long-wave ultraviolet (UV-A, 320-400 nm), visible light pJ (400-700 nm) and infrared light (wavelength range 700-150,000 nm). There is. On a clear day, the composition of sunlight at the sea surface is about 1-2% ultraviolet rays, about 42% visible light, and about 5% ultraviolet rays.
Consists of 7% infrared radiation. At high altitudes, where the amount of sunlight, especially ultraviolet rays, increases and temperatures drop below zero at high altitudes, climbers need extremely effective sun protection.

It is recognized that ultraviolet B is harmful to health and that excessive natural exposure can lead to skin aging due to sunburn (erythema) and cancer. Ultraviolet A is apparently harmless in its natural strength and causes skin tanning. Although visible light, or white light, was thought to be safe,9 it can cause skin diseases, skin aging, and cancer, including particularly photosensitive reactions that occur when exposed to intense light. has been reported. The most serious damage that commonly occurs when overexposure to visible and infrared light includes dehydration due to overheating and eventual unconsciousness.

Sunstroke can even lead to death.

A survey of existing literature shows that the sun's harmful rays are in the ultraviolet range (C1ever 1970) and that sunburn rays (ultraviolet B) are carcinogenic (Blum 195).
9, Magnus 1976, Forbe
s et al. 1978) is confirmed. On the other hand, even if exposed to ultraviolet A in much higher amounts than ultraviolet B, it will only cause benign warts.

Of course, sunlight ranges from ultraviolet to visible light.

Infrared radiation and eventually radio waves will also be expanded.

The latter is probably negligible with respect to its effect on the envelope, but visible light cannot be ignored.

Adverse effects such as phototoxic reactions resulting in tumor development due to DNA cross-linking have been recorded. Visible light also depends on the person.

Causes solar urticaria.

Although it is now well recognized that precancerous conditions and cancers are the result of ultraviolet radiation, the fact that intense heat exposure causes scaly cell carcinomas, and that slow heat radiation in the physiological range induces tumors. The fact that this is possible is not fully recognized. Evidence for these results exists in Kang cancer in China and Kangri cancer in Kashmir, India.
of Kashmir), most of the epithlioma (epith
elima). The similarities between infrared and ultraviolet radiation in causing skin cancer are clear. moreover,
Skin aging (elasticity, etc.), erythema, and cancer can be caused by any of the above, and in the pathology of human cancer, increasing damage due to the slow chemical action of infrared rays is important. There is a distinct possibility that it is.

As the solar radiation rate increases, heat is an accompanying factor.

It is clear that sunbathing during the day involves irradiation with ultraviolet B and infrared radiation, which is not harmless to the basolateral area. The solar screens described below include materials that deflect heat and UV-B from the sunbather and attenuate the intensity of the rays by absorbing and diffusing UV-A and sunlight.

In order to avoid unpleasant sunburn, genetic damage effects, premature skin aging, solar angulation or harmful tumors, the skin of people who relax or work under strong sunlight must be protected. Such protection can be provided by clothing in the rays of sunlight, but as elephants are usually associated with high temperatures this is often undesirable or impractical in view of the activity pursued. .

If it is not desired to wear clothing, it is usual to apply creams, lotions, etc. to the exposed parts of the two bodies, and these substances have the ability to absorb at least the sun's ultraviolet MB, and in some cases ultraviolet and ILA. contains ingredients and thus prevents or reduces the occurrence of the harmful effects of sunlight mentioned above. If one desires prolonged exposure to the sun's rays in order to tan,9 for example, one may be required to use creams or lotions frequently and in large quantities.

This is inconvenient, expensive, and can be dangerous in itself.

However, protection from infrared rays as a direct heating medium or cancer-inducing medium or eye fatigue.

Viral activity such as dizziness, conjunctivitis, and herpes.

Protection from dehydration, 9 headaches, etc., of course, cannot be obtained with such lotions, and sooner or later the sunbather is forced to evacuate from the sun's rays due to heat exhaustion, pseudovisual loss and/or awareness.

Alternatively, it is made transparent or semi-transparent to protect against sunburn-safe ultraviolet rays, but it also protects against sunlight's dangerous ultraviolet rays.
1B and roofs adapted to absorb biologically important parts of the visible and infrared radiation of sunlight, in order to prevent and reduce the undesirable effects mentioned above, and at the same time to obtain the desired effects of shielding and tanning; It is also possible to relax or work under a canopy.

However, the beneficial effects of sunlight cannot be overlooked. For example, the effects of sunlight therapy, which have long been known, are used in the prevention and treatment of rickets, vitamin D synthesis, secondary anemia, various types of pulmonary cough, and skin infections. The close relationship that exists between tanning and male and female sex hormone systems is also known.

Current research lies in methods for achieving safe and beneficial sunbathing, eliminating potential acute and chronic effects.

Known colorless, transparent materials 9, such as glass, quartz, and plastic sheets of various types transmit dangerous if not all solar radiation and are therefore unsuitable for manufacturing solar screens. Also chemical burns, blinding or glare and heat absorption to persons shielded by such means.

This is because slow synergistic effects are not excluded.

Such materials are used in the construction of so-called "solar lamps" and "solar beds." In this case, the lamps associated with the device are adapted to emit only wavelengths in the ultraviolet A range, where it is safe for sunburn to be effective without causing burns, and these provide cooling and heat dissipation. It relies heavily on forced air circulation or heat dissipation to produce heat. Nevertheless, exposure to emitted ultraviolet A and ultraviolet B radiation is now considered to be a serious defect in such lamps and a potential danger to the user's health. It is being

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sunshade type sunbathing device that is convenient to use and allows only selected wavelengths of the sun's rays to pass through.

The present invention uses a screen made of plastic material that transmits safe ultraviolet A of the sun's rays.

at least one first agent in which the material absorbs at least 80% of ultraviolet B; and 45
0 to 700 nm and 700 to 15000 nm
It accounts for more than 50% of visible light and infrared light with wavelengths in the range of . and (1) at least one second agent that inhibits permeation of biologically important parts, wherein both sides are substantially uniformly dispersed throughout the plastic material.

The plastic material, preferably a thermoplastic, must exhibit the property of being transparent to long-wave ultraviolet A, particularly at wavelengths between 350 nm and 450 nm, which are associated with sunburn. Additionally, most of the wavelengths associated with blinding and infrared wavelengths greater than 450 nm are absorbed.

Eliminates the heating element of sunlight and prevents cancer-causing phenomena.

Blocking the synergistic effects that cause skin aging or malignancy.

Suitable materials for the screen to act as support material for the first and second parts include vinyl chloride resins, polyolefins such as polyethylene and polypropylene, and acrylic resins such as polymethyl methacrylate. The vinyl chloride resin mentioned above.

It is a homopolymer or a vinyl chloride copolymer containing 50 mol % or more of vinyl chloride, and such a resin can further contain a plasticizer. Thermoplastic materials containing interacting unsaturated or aromatic nuclei such as polystyrene or polycarbonate absorb UV radiation at wavelengths greater than 320 um, although copolymers such as polyethylene/vinyl acetate are also suitable. is inappropriate.

Vinyl chloride or polypropylene type resins are substantially transparent to almost all UV A, UV B wavelengths, and most of the visible and infrared spectrum.

The preferred material for the screen is a plasticized polyvinyl chloride film 100 to 500 microns thick, such as 150 microns, either as a single film or laminated with a reinforced nylon net for increased physical strength. .

The sheet material can be impregnated on both sides by dipping into alcoholic solutions of the first and second agents. Alternatively, the screen material may be formed by mixing UVB, visible and infrared absorbing materials with polymers before extruding the film in an extruder.

No matter which resin mentioned above is used, from 320 nm to 4
It must not absorb excess light at a wavelength of 50 nm, that is, more than 20%. The resin and light absorber must be photostable and non-volatile at the relatively high temperatures used for extrusion (ie, about 150° C.).

Suitable UVB absorbers include those of various chemical classes and include pva compatible agents such as 2-phenylbenzotriazone, 2-3' hydroxyphenol, and benzotriazone. However, it is stable.

Other materials that absorb dangerous shortwave ultraviolet B radiation may also be used. The impregnation of the sheet material is done using ultraviolet Be! Acquired material is 0.01
to 0.5% by weight, preferably 0.05 to 0.2% by weight, is contained in the thermoplastic material, and wavelengths from 290 to 320
At least 8 nm of naturally occurring dangerous ultraviolet B
It is made to absorb 0%.

A similar method is to include dyes, pigments, and other substances in sufficient amounts to absorb a biologically meaningful proportion (i.e., 50% or more) of light with wavelengths of 450 nm or longer. Therefore, there is a method of selectively absorbing visible light and infrared rays in sunlight. Since visible light is removed in this process, a dye or blur is dispensed into the film. The color chart itself has no effect or benefit on health.

The choice of color is solely for the aesthetic appeal of the device.

Of course, such absorbers coexist with PVA and other fats and are stable, especially from 320 nm to 4
It must not absorb wavelengths of 50 nm, yet must absorb infrared rays, which are both solar and heating, and which are dazzling and carcinogenic. Suitable pigments and dyes, including those belonging to many chemical classes, such as Brilliant Acid Green, Patent Blue, etc., are present as additives in the width of the resin in amounts less than 5% by weight of the screen material.

The UVB absorber and pigment or dye must be uniformly distributed throughout the thermoplastic material of the screen.

The sheet material is formed by calender mixing or extrusion of the resin and absorbent, as described above.

Further ancillary advantages are provided by finishing the material so that one side is matte and the other side polished or reflective. The matte finish makes the surface of the material translucent, providing privacy while at the same time dispersing the UV A radiation and reducing visible glare and glare, which can cause discomfort to sunbathers. Provides a means of avoiding concentration 1. If the screen material is placed facing the sunlight with the polished surface facing towards the sunbather, the surface will absorb the desired and beneficial ultraviolet radiation from the sunbather or the ground. A is reflected back towards the sunbather. Experiments have shown that this is particularly effective in the case of uneven, parallel-type screens.

The apparatus includes a framework adapted to support sheet material. The una framework is comprised of a central support member and a number of support rods radiating from one end of the central support member. This support bar is preferably hinged to the central support member, so that it can be used for storage or/and
Or it can be folded for transport.

Alternatively, the support rod may be safely removable from the central support member for such purposes.

The framework can also include a number of support bars that extend to provide a space below which the sheet material can be covered. In this case, the support rods are hinged or removably secured to each other.

As a further alternative, the sheet material may be adapted to be worn over a portion of the human body, such as a hat.

Embodiments of the invention will be described with reference to the accompanying drawings.

FIG. 1 shows a spectrograph showing the absorption properties of one different plasticized PVC film. A slight amount of ultraviolet B (i.e. wavelength 290 to 320 nm)
) is absorbed, and most of the visible light is not absorbed. Figure 2 shows infrared spectrographs of various plasticized polyethylene films;
350 nm, 6700 nm.

It absorbs only three narrow wavelength bands of 14,000 nm,
It can be seen that most of the other parts are transparent. None of these materials are suitable for making effective sunscreens in accordance with the present invention.

Referring to FIGS. 3 and 4, an absorption diaphragm or spectrograph of a screen according to the present invention is shown. The wavelength range of ultraviolet B is 290 to 320 nm.
Visible and infrared range 450 to 700 n each
It can be seen that almost all is absorbed along with m and the 700 to 2500 nm portion. According to FIG. 4, it can be seen that most of the infrared rays in the wavelength range of 7,000 to 15,000 nm are absorbed, and approximately 50% of the infrared rays in the wavelength range of 2,500 to 7,000 nm are absorbed. This method prevents the sun's harmful rays from reaching the person's skin or eyes. By this method 9. Sunbathing or other activities will not only be safe from the harmful effects of the sun, but also such activities will be comfortably sedated, in the dissipated light and without feeling unpleasant heat. It can be done without.

Referring to FIG. 5, there is shown a device of generally convenient construction, in the form of an umbrella or sunshade 1o;
This embodies the shape of the screen support and central support member 11. It includes a number of support bars 12 radiating from one end of a central support member 11 and a sheet of material 13 covering and retaining the support bars 12. Umbrella 10 can be folded up for storage and transportation and erected for use in a simple manner.

The central support member 11 has a pointed end so that it can be easily erected on grass or a beach. Alternatively, a heavy disc-shaped base can be provided such that the support member 11 stands upright in use, so that the device can be used even on terraces, berths, and other impenetrable lands. The support member 11 is.

It is hinged at 15, so the upper part can be turned towards the sun.

Referring to FIG. 6, a canopy-type whistle is shown including a seat support rod 21 and a foot z2 connected by a three-way projection 23. Sheet material 24 is supported by rJzl to form a downwardly covered space 25. The legs 22 at one end of the device 20 are longer than the legs at the other end so that the seat 24 is inclined relative to the ground as shown. Alternatively, the foot 22 may include telescoping structures or coupling members assembled in any desired manner.

The seat 24 can be parallel to the ground or tilted to a desired angle to the ground. The rod 21 is shown to include coupling members for ease of transportation and/or storage, and the length of such members is conveniently approximately 4 mm.
51 and the plane area of the one shown in the figure is approximately 180 x 80 cm. The shaft 21 and the foot 22 are removably connected to the foot 23.

Made of plastic material, light alloy, or steel.

Alternatively, it can be a pivot join if desired. The sheet 24 has clips, tacks, knots (
(not shown), is enclosed in a boxerato (not shown) provided along the edge of the sheet 24, or is preferably retained by some other method that allows the sheet 24 to be attached to and removed from the rod 21.

In a possible embodiment of the device according to the invention, sheet material 13
．． 24 is tanned and transmits ultraviolet A, from 29o to 320o
At least 80% of ultraviolet B in the wavelength range of nm+
At least 50 in the visible and infrared wavelengths above 450 nm
Contains substances that absorb %. According to the invention.

It protects a person from the harmful effects of the sun and allows one to tan while relaxing or being active outdoors without frequently applying creams, lotions, etc., wearing restrictive clothing, or wearing undesirable clothing. .

Other embodiments of the device will be apparent to those skilled in the art. For example, the screen material may be laminated with nylon netting to provide sufficient strength for use as a roof over an enclosed area, such as a swimming pool or tennis court. Many other framework arrangements may be used in the method of the FIG. 6 embodiment, 9 such as simply an upright support screen. Alternatively, the screen material can be formed into a wide-rimmed shape, for example worn by a person exposed to the sun.

[Brief explanation of drawings]

Figures 1 and 2 show absorption diagrams or spectrographs of plasticized PVA and polyethylene films. FIG. 3 shows a spectrograph of the screen of the invention in ultraviolet and visible light. FIG. 4 shows a spectrograph of the screen of the invention in the infrared. FIG. 5 shows a schematic front view of the first embodiment. FIG. 6 shows a schematic front view of the second embodiment.

Claims (8)

[Claims] (1) A screen made of a plastic material that transmits safe ultraviolet A of sunlight, and at least one type of first agent in which the material absorbs at least 80% of ultraviolet B; 70
at least one second type that blocks the transmission of a physiologically important fraction that accounts for more than 50% of visible and infrared radiation with wavelengths in the range of 0 nm and 7,000 to 15,000 nm;
1. A sunbathing device comprising: an agent, wherein both agents are substantially uniformly dispersed throughout the plastic material. (2) The device according to claim 1, wherein the screen is a flexible sheet or film. (3) The device according to claim 2, wherein the plastic material is a thermoplastic material. (4) The device according to claim 3, wherein the thermoplastic material is vinyl chloride resin, polyolefin, or acrylic resin. (5) The first agent is 0.01 to 0.5 of plastic material.
% or less by weight. (6) The device according to claim 1, wherein the second agent is 0.5% by weight or less of the plastic material. (7) The device according to claim 1, wherein the second agent comprises a lightweight, heat-stable dye. (8) The device of claim 1, wherein the screen is supported by a frame.