KR20100134926A

KR20100134926A - Color changing mobile phone case as ultraviolet intensity using light sensing pigment and ultraviolet block pigment

Info

Publication number: KR20100134926A
Application number: KR1020090053291A
Authority: KR
Inventors: 안성훈; 위경훈; 이재훈; 정범석
Original assignee: 서울대학교산학협력단
Priority date: 2009-06-16
Filing date: 2009-06-16
Publication date: 2010-12-24

Abstract

The present invention relates to a case for a mobile phone, the color of which varies depending on the intensity of the ultraviolet light using a pigment and a sunscreen (ink oxide) in response to sunlight ultraviolet rays, in more detail. It mixes and adds a pigment to the base material of the mobile phone case, and adjusts the composition ratio with the sunscreen to change the surface color of the case to a predetermined color when exposed to sunlight (ultraviolet ray) of a certain intensity. Has Through this, it is possible to express a new color that could not have been existing, and the reactivity to return to the original color back by using a sunscreen is characterized in that it is faster. In addition, the use of a sunscreen improves the reactivity to return to the original color, and at the same time, the impermeability of the zinc oxide makes a big difference in the color of the inside of the case and the inside of the surface. Due to this, it can also serve as a case that can detect ultraviolet rays. In this principle, the outside and the inside of the case are composed of one arbitrary mark, which allows the user to use it as a tool for measuring the current UV intensity.

Description

Color changing mobile phone case as ultraviolet intensity using light sensing pigment and ultraviolet block pigment}

The present invention shows the color change according to the intensity of sunlight (ultraviolet light) through the proper ratio of zinc oxide having the basic properties of the pigment of light seeing that changes color according to sunlight (ultraviolet) and the ability to block ultraviolet rays. The present invention relates to a mobile phone case capable of determining the intensity of sunlight (ultraviolet rays). In today's society, cell phones are becoming an indispensable item for society members. In other words, the mobile phone is always carried by most users, so it is located closer to the user's hand than other accessories. In addition, the mobile phone is equipped with a variety of additional functions such as messaging, micropayment, transportation card, GPS, removable disk, mobile banking for a variety of convenience for the user beyond the basic function of only making a phone call. Recently, due to well-being fever, mobile phones equipped with additional functions such as blood alcohol level check, body temperature and pulse check, and blood sugar check have been developed for users.

Meanwhile, as interest in health has increased due to the recent environmental pollution such as ozone layer destruction and global warming, interest in ultraviolet rays harmful to skin is increasing. It is recommended that you do not apply blockers or go out. However, in case of UV index information provided by the Korea Meteorological Administration, it is not the specific region where the user is located, but the average UV index of each city group. There is a need for a device that can determine the UV intensity of the device. Of course, there is a device that can determine the intensity of the ultraviolet light, but it is quite expensive and the volume is also large enough to be difficult to carry in everyday, there is a need for a device having a relatively small size that can replace it. In addition, while simply identifying the presence or absence of ultraviolet light can be an important role by qualitatively recognizing the intensity of ultraviolet light to the user to the user.

The present invention uses a light pigment in the whole or part of the outside of the case for a mobile phone. Sight pigment is a photosensitive discoloration material whose color is changed by sunlight (ultraviolet rays). An ultraviolet discoloration pigment is a kind of organic compound that changes color when subjected to sunlight (ultraviolet rays) and reversibly returns by heat or other wavelengths. In using the light pigment, it can be represented by various methods such as a method through mixing with the base material used in the manufacture of a mobile phone case, a paint through mixing with a paint component used for expressing color. The present invention mixes and adds the material and the light pigment as the base material of the mobile phone case, and adjusts the composition ratio with the sunscreen, and when exposed to sunlight (ultraviolet light) of a certain intensity, the surface color of the case changes to a predetermined color It is manufactured to. Through this, it is possible to express a new color that could not have existed previously, and by using a sunscreen, reactivity is returned to the original color again.

The present invention is to solve the above-described problems, to provide a method for determining the intensity of the ultraviolet light through the mobile phone case by including a light pigment which changes color according to the ultraviolet light in the case for the mobile phone.

The present invention, in order to solve the above problems, by mixing a variety of light pigments and zinc oxide in a predetermined ratio on the whole or a part of the outside of the mobile phone case by changing the color according to the change in the intensity of ultraviolet rays, on the contrary If it does, return to the original color. Using this principle, different colors are displayed on the whole or part of the mobile phone case according to the intensity and exposure time of ultraviolet rays, and the danger of ultraviolet rays can be known through the displayed colors.

The present invention is a mobile phone case that changes the color by applying the characteristics of the light pigment that was simply changed depending on the presence or absence of ultraviolet rays by changing the magnification of the material to the case for the mobile phone by changing the color shade according to the intensity of the ultraviolet ray By providing a beautiful appearance and changing colors, there is a technical usefulness that can maximize the user's satisfaction in accordance with the promotion of interest in health, which is essential in modern society.

Hereinafter, the embodiment according to the present invention will be described in detail. Light pigments are used for all or part of the outside of the mobile phone case according to the present invention. Light pigments are mixed in various proportions in the proportion of 0.5 ~ 5% with the base material. At this time, the light pigment does not significantly affect the transparency of most base materials. However, when zinc oxide is mixed at a ratio of 1-5% by mass of light pigment, transparency may vary depending on the mass ratio. The higher the proportion of sunscreen, the longer the color changes when exposed to UV light. In this case, of course, if the absolute amount of the light pigment is increased, it is possible to reduce the time that the color changes when exposed to ultraviolet light (sunlight). At this time, the sunscreen may speed up the reaction to return to the original color when there is no ultraviolet light (sunlight). In general, when there is no UV light, the change of color is about twice as slow, but when mixing the sunscreen, even if only a part of it is mixed, the speed of change of color can be increased to the rate of UV response. . This increase in reaction speed can substantially increase the practicality since the color of the cell phone case can be freely changed by ultraviolet light (sunlight).

In addition, by using a sunscreen, the reactivity to return to the original color is faster, and at the same time, the impermeability of the characteristics of the zinc oxide makes a big difference in the color of the outside of the case and the inside of the surface. Therefore, it can additionally serve as a case capable of detecting ultraviolet rays. Therefore, the outside and the inside of the case is composed of a single cover, and serves as a tool for measuring the current UV intensity to the user.

1 is a schematic diagram of the color change when the mobile phone case according to the embodiment of the present invention receives ultraviolet light of very weak intensity,

Figure 2 is a schematic view of the color change when the mobile phone case according to the embodiment of the present invention receives ultraviolet light of medium intensity,

Figure 3 is a schematic view of the color change when the cell phone case according to the embodiment of the present invention receives a strong intensity of ultraviolet rays,

4 is a schematic diagram of a state before a mobile phone case is exposed to ultraviolet rays according to an embodiment of the present invention;

5 is a schematic view of a mobile phone case exposed to weak ultraviolet light according to an embodiment of the present invention,

6 is a schematic view of a mobile phone case according to an embodiment of the present invention exposed to strong ultraviolet light.

10: UV detection device

20: surface layer of the ultraviolet sensing device

30: UV

Claims

Cell phone case that changes color according to the solar ultraviolet light intensity, characterized in that it is produced by mixing the pigment pigment and zinc oxide with the base material of the cell phone case.

The mobile phone of claim 1, wherein the pigment pigment and zinc oxide are mixed with the mobile phone case base material at a mass ratio of 1 to 5% and a mass ratio of 0.5 to 5%, respectively. case.