JP2001091355A - Measuring apparatus for spf value - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select a proper anti-sunburn cream and to make comfortably preventable a sunburn by presenting a required minimum SPF value according to ultraviolet radiation amount. SOLUTION: This measuring apparatus is constituted of an ultraviolet radiation amount measuring means 11 which measures an ultraviolet radiation amount. The measuring apparatus is constituted of a sunburn-time estimation means 12 which estimates the time which elapses until a subject is sunburned when the subject is exposed continuously to the measured ultraviolet radiation amount. The measuring apparatus is constituted of an exposure prearranged-time input means 13 which inputs a prearranged time in which the subject is exposed to the measured ultraviolet radiation amount. The measuring apparatus is constituted of an SPF-value calculation means 14 by which an SPF value used to prevent a sunburn is calculated on the basis of the sunburn time and the exposure prearranged time. The measuring apparatus is constituted of an SPF-value display means 15 which displays the calculated SPF value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring an SPF value required for selecting an appropriate sunscreen.

[0002]

Ultraviolet rays are said to cause skin spots and wrinkles, accelerate skin aging, suppress immune reactions, and cause skin cancer. SPF (Sun
The Protection Factor value is an index indicating the ability to prevent such harmful ultraviolet rays. The time during which sunscreen can be applied without sunburn and the time during which sunscreen can be prevented from being tanned (summer daytime). 20 minutes). The higher the value, the higher the ability to prevent ultraviolet rays. For example, if the time that the user can not tan on bare skin is 20 minutes, and the time that the user can not tan when applying a sunscreen is 100 minutes, the SPF value is 5. Generally, it is considered that the sunscreen cream to be applied when going out or taking a walk has an SPF value of 6 to 7, and 10 or more is suitable for sports under the scorching sun and sea bathing.

[0003] On the other hand, sunscreen cream components include an organic compound ultraviolet absorber such as oxybenzone and an inorganic compound ultraviolet scattering agent such as titanium oxide. S
In order to increase the PF value, it is necessary to increase these components, but if a large amount of an organic ultraviolet absorber is added, stickiness and irritation become strong, and if a large amount of an inorganic ultraviolet scattering agent is added, bulkiness is increased. It becomes powdery. Therefore, if the SPF value is unnecessarily increased, an extra load is applied to the skin, and the feeling of use is deteriorated.

[0004] Therefore, the present invention has been made to provide a necessary minimum SPF value in accordance with the amount of ultraviolet rays, so that an appropriate sunscreen cream can be selected and a comfortable sunburn prevention can be performed. It is.

[0005]

In order to achieve the above object, the present invention is configured as follows.

That is, means for measuring the amount of ultraviolet light, means for measuring the amount of ultraviolet light, means for estimating the time until sunburn when the measured amount of ultraviolet light is continued, and time for exposure to the measured amount of ultraviolet light Exposure exposure time input means for inputting an SPF value, SPF value calculation means for calculating an SPF value for preventing sunburn based on the sunburn time and the expected exposure time, and SPF value display means for displaying the calculated SPF value. SPF value measuring device. [Detailed description of the invention]

[0007]

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

FIG. 1 shows a functional block diagram of an SPF value measuring device embodying the present invention. The SPF value measuring device 1 includes an ultraviolet ray amount measuring means 11 for measuring an ultraviolet ray amount, a tanning time estimating means 12 for estimating a time until sunburn when the measured ultraviolet ray amount is continuously exposed, and Exposure Exposure Time Input Means 13 for Inputting Expected Exposure Time
SPF value calculating means 14 for calculating an SPF value for preventing sunburn based on the sunburn time and the scheduled exposure time
Value display means 15 for displaying the calculated SPF value
It consists of.

The ultraviolet ray amount measuring means 11 converts the output current of the ultraviolet ray sensor S attached to the apparatus into a voltage, and A / D converts the voltage value to measure the ultraviolet ray amount. UV sensor S
Receives the ultraviolet light incident on the ultraviolet inlet through the ultraviolet transmission filter with the photodiode, and outputs a current corresponding to the amount of received light.

The tanning time estimating means 12 is configured to operate the selection key K1 attached to the apparatus and to input the user's skin type and the ultraviolet ray necessary for tanning according to the skin type stored in the storage device M in advance. Based on the amount of exposure and the amount of ultraviolet light measured by the amount of ultraviolet light measuring means 11, the time until sunburn when the amount of ultraviolet light measured is continued is estimated. The skin types are classified into skin types that are easily tanned based on the content of melanin that prevents ultraviolet rays.

The scheduled exposure time input means 13 inputs the scheduled time of exposure of the user to the ultraviolet ray amount measured by operating the numeric key K2 attached to the apparatus.

The SPF value calculating means 14 calculates the number of times the expected exposure time input via the expected exposure time input means 13 is longer than the tanning time estimated by the tanning time estimating means 12 to prevent the sunburn. Calculate the value.

The SPF value display means 15 displays the SPF value for preventing sunburn calculated by the SPF value calculation means 14 on the LCD.
Is displayed on the display device D.

The SPF value measuring apparatus of the present invention has the above-mentioned configuration, and firstly, the selection key k1 and the number key K2 are operated to input the user's skin type and expected exposure time. next,
The ultraviolet ray sensor S is exposed to sunlight to start measuring the amount of ultraviolet rays. After a while, the SPF value for preventing the sunburn is displayed on the display device D together with the current amount of ultraviolet rays. By applying the sunscreen cream having the displayed SPF value to the skin, the input time can be kept without sunburn.

[0015]

As described above, the SPF value measuring apparatus according to the present invention comprises an ultraviolet ray amount measuring means, a sunburn time estimating means, a scheduled exposure time inputting means, an SPF value calculating means, and an SPF calculating means.
A PF value display unit is provided to display an SPF value for preventing sunburn. Therefore, according to the present invention, the minimum SPF value required to prevent sunburn is displayed, so that an excessively strong sunscreen cream is used to hurt, bulk, or whiten the skin. And prevent sunburn comfortably. In general, the higher the SPF value of the sunscreen cream, the more expensive it is, so that it is possible to prevent the sunburn economically and without waste.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of an SPF value measuring device embodying the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 SPF value measuring apparatus 11 Ultraviolet ray amount measuring means 12 Sunburn time estimating means 13 Exposure expected time input means 14 SPF value calculating means 15 SPF value displaying means

Claims (1)

[Claims] 1. An ultraviolet light amount measuring means for measuring the amount of ultraviolet light, a tanning time estimating means for estimating a time until sunburn when the measured amount of ultraviolet light is continued, and a scheduled time for exposure to the measured amount of ultraviolet light Exposure time input means for inputting the SPF value, SPF value calculation means for calculating an SPF value for preventing sunburn based on the sunburn time and the expected exposure time, and SPF value display means for displaying the calculated SPF value. SPF value measuring device.