KR950000349B1 - Cathode-ray tube - Google Patents

Abstract

The CRT radiates far infrared rays healthful to human. The CRT has a graphite coating layer (3) which includes a matter (4) such as SiO2, Al203, MgO, CaO, TiO2 to radiate far infrared rays and the layer is coated uniformly on the panel.

Description

Cathode Ray Tube with Far Infrared Radiation Layer

1 is a component analysis table 1a and wavelength-specific spectral emission graph 1b of a far-infrared radiation material used in an embodiment of the present invention.

2 is an appearance of a cathode ray tube manufactured according to an embodiment of the present invention.

3 is a view showing an experimental method for verifying the far-infrared effect of the cathode ray tube according to the present invention.

4 is a rose photograph to enhance the far-infrared radiation effect of the cathode ray tube manufactured according to an embodiment of the present invention, a is behind the cathode ray tube of the present invention, b is behind the conventional cathode ray tube, c is the effect of electromagnetic waves This is the case when 160 hours have elapsed with the exclusion state.

5 is a component analysis table 5a and wavelength-specific spectral emission graph 5b of the far-infrared radiation material used in another embodiment of the present invention.

6 is an appearance of a cathode ray tube manufactured according to another embodiment of the present invention.

Figure 7 is a rose photograph showing the far-infrared radiation effect of the cathode ray tube manufactured according to another embodiment of the present invention, a is behind the cathode ray tube of the present invention, b is behind the conventional cathode ray tube, c is influenced by electromagnetic waves It is the case when 160 hours elapsed in state that it excluded.

* Explanation of symbols for main parts of the drawings

1: cathode ray tube 2: funnel

3: exterior graphite 4: far-infrared radiation substance

5: cabinet 6: ventilation holes

The present invention relates to a cathode ray tube provided with a far infrared ray emitting layer so that far infrared rays are radiated.

As the modern information society matured, modern people suffered from pathological phenomena caused by electromagnetic waves and working environment, called VDT (visual display terminal) syndrome. When measuring the amount of electromagnetic waves emitted from VDT, the intensity is very low, but with electromagnetic disturbances, eye redness, vision loss, headache, muscle pain, chronic fatigue, malaise, menstrual irregularities, infertility, miscarriage, nervous breakdown, insomnia, cataracts, Anemia, cancer-causing such phenomena vary widely. Shielding these electromagnetic waves is the most desirable method, but in reality there are many difficulties including the cost increase.

An object of the present invention is to provide a cathode ray tube in which far infrared rays are radiated to obtain a compensation effect by generating a beneficial wavelength in a display that is found to be harmful to a human body.

An object of the present invention is a cathode ray tube comprising an outer panel consisting of a panel portion, a funnel portion having an exterior graphite layer applied and formed on the outer surface and a neck portion, wherein the exterior graphite layer contains a far-infrared radiation material. It is achieved by the cathode ray tube made into.

The far-infrared radiation substance is at least one of silicon dioxide, aluminum oxide, zirconium oxide, magnesium oxide, calcium oxide, titanium oxide, sodium oxide, phosphorus oxide.

Exterior graphite formed on the outer surface of the funnel of the cathode ray tube serves as a condenser. In cathode ray tube, anode is supplied with high voltage of 25kV, which is supplied by rectifying the output of flyback transformer (F.B.T). This output is obtained as the input of a square wave, so the ripple content is high. In rectifier circuits, capacitors are often used in smoothing circuits to eliminate this ripple. The external graphite and internal graphite in cathode ray tubes serve as the capacitor.

OA devices used in offices, especially computer terminals, are often placed at the back or toward other workers, so that people at the back are susceptible to electromagnetic waves.

In the present invention, by including the far-infrared radiation material in the exterior graphite portion, the far-infrared rays are radiated from the rear side of the cathode ray tube.

Equation represented by Stefan-Boltzmann law

W = 5.67 × 10 ^-12 T ⁴

(W is the forward yarn energy W / cm 2 and T is the absolute temperature K)

The amount of radiated energy is proportional to the fourth power of absolute temperature. This means that in order to increase the radiation efficiency of far infrared rays and increase the amount of radiation energy, the temperature to be applied must be high. In the case of a terminal equipped with a cathode ray tube, the temperature of the exterior graphite portion is increased to about 45 to 55 ° C. while the switch is turned on, and as the size of the cathode ray tube increases, the temperature increases to about 70 ° C. in some cases. Alternatively, it is possible to radiate far-infrared rays from the exterior graphite unit by using natural heat generated when driving the terminal.

Hereinafter, specific embodiments of the present invention will be described in detail.

Example 1

The following components are mixed to prepare a composition for exterior graphite.

15% by weight graphite for exterior graphite

15% by weight of a mixture of SiO ₂ , Al ₂ O ₃ , MgO, CaO, TiO ₂

15% by weight of kasil

5% by weight

Pure water

The composition is dark gray overall because the far-infrared radiating material introduced is white. The obtained composition is spray-coated to the outer surface of the funnel at a high pressure of 1.5 kg / cm ₂ or more using a spray gun for application according to a conventional method.

1 is a component analysis table (1A) and wavelength-specific spectral emission graph (1B) of the far-infrared radiating material used in the above examples, in which all peaks of the constituents used are shown. It can be seen that.

2 shows the appearance of the cathode ray tube 1 manufactured according to the above embodiment, in which the far-infrared radiating material 4 is uniformly mixed with the upper portion of the funnel 2 and the exterior graphite 3.

In the case of Example 1 in which the funnel was applied to the coating liquid prepared by mixing the exterior graphite and the far infrared emitting material, the following experiment was conducted to observe the far infrared effect of the obtained cathode ray tube.

3 shows an experimental method for verifying the far infrared ray effect.

Roses bloomed in the same state are arranged in the same positions as those in Fig. 3 a, b, and c. The cathode ray tube of A was a cathode ray tube 1 prepared according to Example 1, mounted on a cabinet 5, and a flask containing rose blooms was placed in the vent 6 of the cabinet 5. The cathode ray tube of B is a conventional cathode ray tube containing no far-infrared radiation material, and it is mounted as A and roses are placed in the same position. C was removed from the cathode ray tube and set aside where it is not affected by electromagnetic waves. Among the roses that had been in the same flowering state, the rose of B stopped blooming after 70 hours, and after 90 hours, the end of the petals began to burn black. But even then, the roses of A and C were still blooming. After 120 hours, the petals of B burned completely black, and after 140 hours the stems were dried. At this time, the petals of A began to dry slightly. After 160 hours, B's rose was in a mummy state with both petals and stems dried, A's rose was in a dry state, and C's rose was in full bloom. The result of measuring the temperature of each position after 160 hours passed is shown in Table 1.

TABLE 1

4 is a photograph of a rose after 160 hours, in which A is behind a cathode ray tube manufactured according to Example 1 of the present invention, B is behind a conventional cathode ray tube, and C is a state of a rose without the influence of the cathode ray tube. . From the photograph, we can confirm the bio-activation characteristics by far-infrared radiation. A under the influence of far-infrared radiation began to dry a little faster than natural C. It seems to be because it was influenced by electromagnetic waves. However, when comparing the photographs of A and B, it can be seen that far infrared rays emitted from the exterior graphite layer are very beneficial to the living body.

Example 2

The following components are mixed to prepare a composition for forming a far infrared ray emitting layer.

SiO ₂ , Al ₂ O ₃ , MgO 30% by weight

Kasil 20%

50% pure

The composition was prepared according to a conventional method and applied to the top of the exterior graphite layer of the cathode ray tube equipped with the exterior graphite layer with a spray or a brush, and then placed in an oven and dried at a temperature of 100 ° C. for 30 minutes.

5 is a component analysis table 5A and wavelength-specific spectral emission graph 5B of the far-infrared radiating material used in the above embodiment, and each component peak is confirmed, and it can be seen that the emissivity is high in a region of 25 μm wavelength or less.

6 is an appearance of a cathode ray tube 1 manufactured according to the above embodiment, in which a far infrared ray emitting material layer 4 is formed on the top of the funnel 2 and on the exterior graphite layer 3.

In Example 2, in which a cathode ray tube having a double layer was obtained by applying a far-infrared radiation material on top of the exterior graphite, experiments of the same method as in Example 1 were performed to verify the far-infrared effect.

According to the experimental method shown in FIG. 3, the cathode ray tube manufactured in Example 2 was mounted as A and mounted as B of a conventional cathode ray tube. As in the fifth case of Example 1, C excludes the influence of the cathode ray tube.

Fig. 7 shows photographs of each rose after 160 hours have elapsed. A is behind the cathode ray tube according to the second embodiment of the present invention in which far-infrared rays are radiated, B is behind a normal cathode ray tube where only electromagnetic waves are emitted, and C is a rose which is in a position where these effects are excluded.

It can be seen from FIG. 7 that an excellent bioactivation effect is obtained even when a far infrared ray emitting layer is formed on the exterior graphite layer.

Claims (4)

A cathode ray tube comprising a panel portion, a funnel portion having an exterior graphite layer applied and formed on an outer surface thereof, and an envelope consisting of a neck portion, wherein the exterior graphite layer contains far-infrared radiation material. The cathode ray tube according to claim 1, wherein said far-infrared radiation substance is uniformly mixed in said exterior graphite layer. The cathode ray tube according to claim 1, wherein the far-infrared radiating material is applied and formed on the exterior graphite layer. The cathode ray tube according to any one of claims 1 to 4, wherein the far-infrared radiation material is at least one of silicon dioxide, aluminum oxide, zircon oxide, magnesium oxide, calcium oxide, titanium oxide, sodium oxide, and oxide. .