KR20200029673A - Anti-condensation and fogging signs using carbon heating elements - Google Patents

Abstract

The present invention relates to a condensation prevention and anti-fogging signpost using a carbon heating element, which can prevent a condensation phenomenon which generates diffused reflection of light to cause difficulties in recognizing expressions displayed on a sign, thereby allowing a driver to recognize the sign in a more satisfactory manner. To this end, the signpost, which allows the driver to recognize destinations such as a downtown area, a national highway, and an expressway as well as various circumstances such as a rest area and a dangerous section, comprises: a sign which is configured in a plate shape of a predetermined size on which letters, symbols or figures are displayed; an insulating material which is aligned in the same size as the rear surface of the sign; a first adhesive which allows the sign and the insulating material to be attached; a carbon fiber heating body which is aligned on the rear surface of the insulating material to heat the sign by means of the insulating material through the application of power; a finishing panel which is aligned on the rear surface of the carbon fiber heating body in the same size as the insulating material to finishe the same; and a second adhesive which allows the finishing panel to be attached to the rear surface of the carbon fiber heating body.

Description

Anti-condensation and fogging signs using carbon heating elements}

The present invention relates to a sign for preventing dew condensation using a carbon heating element, and more specifically, saturated water vapor or water droplets formed due to condensation are attached to a sign background to cause diffuse reflection of light by a driver's vehicle light to check the phrase written on the sign. The present invention relates to a condensation prevention and fogging sign using a carbon heating element that prevents a condensation that makes it difficult to prevent a traffic accident and secure a driver's visibility.

In general, various signs are installed in a city center, a national highway, or a highway through which a vehicle passes to recognize various situations such as a destination, a resting place, or a danger zone. These signs are facilities that are installed on the road to provide drivers with information about the road so that they can easily find their destination, and also provide various traffic information to ensure safe driving.

Signs as described above require a high degree of visibility (visibility, 視 認 性) in order to prevent accidents in advance by allowing the driver to identify and recognize them in the event of bad weather as well as day and night.

On the other hand, the sign as described above is to display the letters or numbers on the metal plate, such as aluminum, as a light-emitting paint, so that the driver can easily recognize the displayed letters during the day and night.

However, in the case of a signboard in which letters or numbers are marked with a reflective sheet on a commonly used aluminum plate, condensation occurs on the surface of the signpost due to the difference in temperature between day and night as the temperature difference between the day and night becomes severe. This condensation phenomenon (frostiness, frost formation, 結露 現象) refers to the phenomenon that water droplets form on the surface of an object due to the difference in temperature. This causes the driver to be unable to easily identify letters or numbers on the sign.

  However, in the case of signs, when the temperature of the sign indicates a temperature lower than the dew point, because the temperature of the sign may decrease below the dew point temperature, even if the air temperature does not reach the dew point temperature, because the temperature does not decrease in the same way as the air temperature drops. Water vapor condenses on the surface of the sign, causing condensation to degrade the visibility of the sign.

Therefore, the driver has an uneasy mind, and there is always a possibility of a large-scale traffic accident when the driving route is suddenly changed on a fork, so the importance of signs to prevent condensation and deliver accurate information to the driver is gradually increasing.

Republic of Korea Registered Patent No. 10-1389794 (published on April 29, 2014) Republic of Korea Registered Patent No. 10-0788403 (published on December 31, 2007) Republic of Korea Registered Utility Model No. 20-0265879 (published on February 27, 2002)

The present invention has been devised to solve various problems of the prior art, and prevents condensation, which causes diffuse reflection of light and makes it difficult to check the text written on the sign, so that the driver can better recognize the sign. The purpose is to provide a sign for preventing condensation and fogging using carbon heating elements.

In addition, another object of the technology according to the present invention is to prevent the condensation phenomenon that makes it difficult to check the phrase written on the signboard by causing diffuse reflection of light, thereby making it possible to achieve safe driving by improving visibility.

In addition, another object of the technology according to the present invention is to prevent the condensation by preventing the condensation phenomenon that makes it difficult to identify the phrase written on the sign by causing diffuse reflection of light to prevent accidents in advance. .

The present invention configured to achieve the above object is as follows. That is, the sign for preventing condensation and fogging using the carbon heating element according to the present invention is a sign that enables a user to recognize various situations of a destination, resting place, or danger zone in a downtown area, a national highway, or a highway. A plate member made of a plate having a predetermined size on which a figure is indicated; A heat insulating material arranged in the same size on the back surface of the plate member; A first adhesive bonding the plate member and the insulating material; A carbon fiber heating element arranged on the rear surface of the heat insulating material and heating the plate member through the heat insulating material through application of power; A finishing panel arranged on the rear surface of the carbon fiber heating element in the same size as the heat insulating material to finish; A second adhesive bonding the finishing panel to the rear surface of the carbon fiber heating element; A temperature / humidity detection means installed inside and outside the plate member and the finishing panel to detect temperature and humidity inside and outside; And the temperature of the plate member stays in the range of 2 ° C to 5 ° C above the dew point temperature by flowing electricity only when the temperature of the plate member is approached to within a certain level (about 1 to 2 ° C) by the temperature and humidity sensing means. It consists of a configuration that includes a controller that energizes or cuts current to the carbon fiber heating element.

In the configuration of the present invention as described above, the heat insulating material may be made of carbon phosphite foam so that heat can be transferred to a sign by heating the carbon fiber heating element.

In addition, in the configuration according to the present invention, the carbon-phosphite foam may be formed in a honeycomb structure.

In addition, in the configuration according to the present invention, the carbon fiber heating element may have a structure of a linear heating element or a planar heating element.

In the configuration of the present invention as described above, the temperature / humidity detection means is installed between the plate member and the closing panel to detect the temperature / humidity inside the signboard; And an external temperature / humidity detection sensor installed on one side of the sign to detect temperature and humidity outside the sign.

In addition, in the configuration according to the present invention, one side of the sign may further be installed with a warning light or a sub-signal that emits a fog warning when the dew point temperature is lower by data calculated by the temperature and humidity sensing means and the controller.

According to the technology of the present invention, it is possible to prevent the condensation phenomenon that makes it difficult to identify the phrase written on the sign by causing diffuse reflection of light, so that the driver can better recognize the sign.

In addition, the technology according to the present invention prevents condensation that causes difficult reflection of light and makes it difficult to check the text written on the sign, thereby improving the visibility, thereby improving safety.

In addition, the technology according to the present invention has the advantage of preventing the accident by preventing the condensation phenomenon that makes it difficult to identify the phrase written on the sign by causing diffuse reflection of light, thereby improving visibility.

1 is a perspective view showing the condensation prevention and fog caution signs using the carbon heating element according to the present invention.
Figure 2 is a cross-sectional view showing a condensation prevention and fog caution signs using a carbon heating element according to the present invention.
Figure 3 is a perspective configuration diagram showing another configuration of the condensation prevention and fog caution signs using the carbon heating element according to the present invention.
Figures 4a and 4b is a perspective configuration diagram showing a sign to which the sign of the anti-condensation and fog caution using a carbon heating element according to the present invention is applied.
Figure 5 is a block diagram showing the operation of the carbon fiber heating element and the warning light of the condensation prevention and fog caution signs using the carbon heating element according to the present invention.

Hereinafter, a condensation prevention and fogging sign using a carbon heating element according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Condensation (結露) prior to explaining the present invention is as follows. That is, the above-described dew condensation occurs in the correlation between atmospheric temperature and relative humidity. In general, water vapor that may be present in the air may have more water vapor as the atmospheric temperature increases. In this way, the maximum amount of water vapor that can exist in the water vapor state is defined as the amount of saturated water vapor at the atmospheric temperature. At a certain temperature, if the current water vapor amount becomes equal to the saturated water vapor amount, water vapor beyond the saturated water vapor amount cannot exist in the water vapor state from that point onwards, and condensation occurs.

Due to the above-described phenomenon, the amount of saturated water vapor at a high temperature decreases as the atmospheric temperature decreases even though there is no change in the amount of water vapor, and the amount of saturated water vapor decreases. Will be. When this occurs in the atmosphere, it appears in the form of fog.

In other words, condensation occurs when T _c (dew point temperature)> T _s (signature temperature). In addition, condensation does not occur when T _c (dew point temperature) <T _s (sign plate temperature). Therefore, condensation does not only occur at low temperatures, but also at high temperatures below, where the relative humidity is high, because it can occur due to a steep change in atmospheric temperature. do. Table 1 shows a table for finding the dew point temperature using atmospheric temperature and relative humidity.

Dew point calculation chart Air temperature (℃)
Relative humidity (%) -5 0 5 10 15 20 25 30 35 40 90 -6.5 -1.3 3.5 8.2 13.3 18.3 23.2 28.0 33.0 38.2 85 -7.2 -2.0 2.3 7.3 12.5 17.4 22.1 27.0 32.0 37.1 80 -7.7 -2.8 1.9 6.5 11.6 16.5 21.0 25.9 31.0 36.2 75 -8.4 -3.6 0.9 5.6 10.4 15.4 19.9 24.7 29.6 34.5 70 -9.2 -4.5 0.2 4.5 9.1 14.2 18.6 23.3 28.1 33.5 65 -10.0 -5.4 -1.0 3.3 8.0 13.0 17.4 22.0 26.8 32.0 60 -10.8 -6.5 -2.1 2.3 6.7 11.9 16.2 20.6 25.3 30.5 55 -11.6 -7.4 -3.2 1.0 5.6 10.4 14.8 19.1 23.9 28.9 50 -12.8 -8.4 -4.4 -0.3 4.1 8.6 13.3 17.5 22.2 27.1 45 -14.3 -9.6 -5.7 -1.5 2.6 7.0 11.7 16.0 20.2 25.2 40 -15.9 -10.8 -7.3 -3.1 0.9 5.4 9.5 14.0 18.2 23.0 35 -17.5 -12.1 -8.6 -4.7 -0.8 3.4 7.4 12.0 16.1 20.6 30 -19.0 -14.3 -10.2 -6.9 -2.9 1.3 5.2 9.2 13.7 18.0

On the other hand, there are various methods to cope with the deterioration of visibility caused by condensation of signs, but it is considered that the most fundamental method is to remove the factors that cause condensation of signs. Table 2 shows changes in temperature and relative humidity during the day, and it can be seen that relative humidity is the opposite of daily change in temperature. In other words, the humidity is highest at dawn and the lowest humidity appears at the time of 2 to 3 pm and the highest temperature.

Curve of change in temperature, relative humidity and dew point during the day

Therefore, as shown in Table 2, condensation is most likely to occur at a position closest to the dew point temperature that changes with relative humidity and temperature. The likelihood of condensation increases as these sections go from midnight to dawn. In Table 2, when the temperature and dew point curves meet, fog is generated at that point. If the temperature of the sign falls below the dew point temperature, dew condensation occurs on the sign even when the temperature does not meet the dew point. The condensation generated in this way becomes frozen when the air temperature drops below zero, making visibility worse.

In order to prevent the condensation phenomenon that causes deterioration of visibility of the sign in the condensation generating mechanism as described above, the surface temperature of the sign is heated so that it does not fall below the dew point (condensation) temperature before reaching the dew point temperature. Maintaining a temperature as high as 5 ° C can fundamentally suppress the occurrence of condensation.

Therefore, the dew point temperature is calculated by sensing the air temperature, humidity and the temperature of the sign without needing to consume electricity to continuously heat the sign to prevent the occurrence of condensation using the above-described principle. Only when the temperature of the sign is close to the dew point temperature within a certain level (about 1 ~ 2 ℃), electricity is flowed or the power is turned on so that the temperature of the sign stays within the range of 2 ℃ ~ 5 ℃ than the dew point temperature. By doing this, since the sign is heated by using electricity only at the time when dew condensation is possible, it can be seen that the economic efficiency through the reduction of power energy also increases by dramatically reducing the use of power.

It is also possible to estimate the approximate electrical energy cost by predicting annual power consumption by collecting weather observation data on temperature and humidity across the country and predicting the possible condensation time for each region.

1 is a perspective view showing the condensation prevention and fogging signs using the carbon heating element according to the present invention, and FIG. 2 is a cross-sectional view showing the condensation prevention and fogging signs using the carbon heating element according to the present invention, FIG. 3. Isometric view showing another configuration of the condensation prevention and fogging signs using the carbon heating element according to the present invention, Figures 4a and 4b is a perspective view showing a condensation prevention and fogging signs using the carbon heating element according to the present invention Configuration diagram, Figure 5 is a block diagram showing the operation of the carbon fiber heating element and the warning light of the condensation prevention and fogging signs using the carbon heating element according to the present invention.

As shown in Figures 1 to 5, the condensation prevention and fogging sign 100 using the carbon heating element according to the present invention is a plate member 110, a plate member made of a plate of a certain size in which letters, symbols or figures are indicated Thermal insulation material 120 arranged at the same size on the rear surface of 110, the first adhesive 130 bonding the plate member 110 and the thermal insulation material 120, and arranged on the rear surface of the thermal insulation material 120 through the application of power Carbon fiber heating element 140 for heating the plate member 110 through the insulating material 120, finishing panel 150, finishing panel arranged on the back of the carbon fiber heating element 140 in the same size as the insulating material 120 to finish A second adhesive 160 for adhering 150 to the back surface of the carbon fiber heating element 140, installed inside and outside between the plate member 110 and the finishing panel 150 to sense the temperature and humidity inside and outside. The temperature of the plate member 110 is the dew point temperature by the temperature and humidity detection means and the temperature and humidity detection means. Current is supplied to the carbon fiber heating element 140 so that the temperature of the plate member 110 stays within a range of 2 ° C to 5 ° C than the dew point temperature by flowing electricity only when it is within a certain level (about 1 to 2 ° C). It is made of a configuration including a controller 180.

The sign 100 for preventing condensation and fogging using the carbon heating element according to the present invention configured as described above is a sign by heating the plate member 110 through heating of the carbon fiber heating element 140 that generates heat by application of power. It is made of a configuration that prevents condensation of 100) and improves visibility of characters, figures, or symbols written on the plate member 110.

In other words, the condensation prevention and fogging sign 100 using the carbon heating element according to the present invention calculates the dew point temperature by sensing the air temperature and humidity and the temperature of the sign 100, and the temperature of the sign 100 Electric current is energized or cut off so that the temperature of the sign 110 stays in the range of about 2 ° C. to 5 ° C. than the dew point temperature by flowing electricity only when the dew point temperature is within a certain level (about 1 to 2 ° C.).

That is, the condensation prevention and fog caution sign 100 using the carbon heating element as described above is a sign by calculating the dew point temperature by sensing the temperature of the air temperature and humidity and the temperature of the sign 100 through the temperature and humidity detection means. The carbon fiber heating element 140 arranged between the plate member 110 and the finishing panel 150 through the controller 180 only when the temperature of (100) approaches the dew point temperature within a certain level (about 1 to 2 ° C). The heating of the carbon fiber heating element 140 is performed through the heat insulating material 120 so that heating of the plate member 110 can be performed by applying power.

As described above, when the heating of the carbon fiber heating element 140 is transmitted to the plate member 110 through the heat insulating material 120, the plate member 110 is heated to prevent condensation on the surface of the sign 110 even in a season in which the temperature difference is severe. As it is, the visibility of characters, figures, or symbols written on the sign 110 is maintained satisfactorily.

Therefore, as described above, by heating the plate member 110 to a predetermined temperature through heating of the carbon fiber heating element 140 to improve visibility of the surface of the plate member 110, the driver can safely drive. In addition, the desired destination can be easily identified through the sign 100.

Describing each component constituting the condensation prevention and fogging sign 100 using the carbon heating element according to the present invention in more detail as follows. First, the plate member 110 constituting the present invention is to be marked with letters, symbols, or figures, and the plate member 110 is made of a plate having a predetermined size as shown in FIGS. 1 to 3.

On the other hand, the plate member 110 as described above is made of a non-ferrous metal such as aluminum or a synthetic resin in the form of a plate, and the front surface of the plate member 110 is a signposted character through a paint, a number indicating the speed limit, a danger sign A figure indicating and a letter indicating the resting place are indicated.

Next, the heat insulating material 120 constituting the present invention is to transmit heat from the carbon fiber heating element 140 to be described later to the plate member 110 so that the plate member 110 can be kept warm. ) Are arranged in the same size on the back surface of the plate member 110 as shown in FIGS. 1 to 3.

Insulating material 120 constituted as described above is composed of carbon-fossil foam so that heat transfer to the plate member 110 may be better performed by heating the carbon fiber heating element 140 in the present invention. In addition, as described above, when constructing the insulating material 120, the insulating material 120 of the carbon-based carbon foam is made of a honeycomb structure.

On the other hand, as described above, when the insulating material 120 is made of carbon-fossil foam, the heat transfer rate and heat preservation effect, which are the functions of the carbon component, are better, so that the heat generated by the heat of the carbon fiber heating element 140 is better plate member ( 110), it is useful to prevent the condensation of the plate member 110 by allowing the plate member 110 to be warmed through the heat retention force of the heat insulating material 120.

Next, the first adhesive 130 constituting the present invention is to enable the adhesion of the insulating material 120 to the back surface of the plate member 110, such a first adhesive 130 is shown in FIGS. As shown, it is arranged between the plate member 110 and the heat insulating material 120 so that adhesion of the heat insulating material 120 to the back surface of the plate member 110 can be achieved through compression while heating is applied.

A double-sided tape or silicone may be used as the first adhesive 130 as described above. At this time, the first adhesive 130 does not first adhere the heat insulating material 120 to the back surface of the plate member 110, but the first adhesive 130, the heat insulating material 120, and the carbon fiber heating element to the back surface of the plate member 110. (140), so that the adhesive can be made through the pressing back and forth in the middle of applying heat in the state of arranging the finishing panel 150 and the second adhesive 160.

Next, the carbon fiber heating element 140 constituting the present invention is generated by the application of power, such a carbon fiber heating element 140 is on the back of the heat insulating material 120 as shown in Figures 1 to 3 It is arranged to heat the plate member 110 through the insulating material 120 through the application of power.

The carbon fiber heating element 140 as described above may be formed of a linear heating element (140 in FIG. 1) or a planar heating element (140 in FIG. 2). At this time, in the case of a plane heating element as the carbon fiber heating element 140, the plane carbon fiber heating element 140 may be attached to the back surface of the heat insulating material 120 through a separate adhesive.

Next, the finishing panel 150 constituting the present invention is for closing the rear surface of the plate member 110 for preventing condensation using a carbon heating element, and the finishing panel 150 is as shown in FIGS. 1 to 3. The rear end of the carbon fiber heating element 140 is arranged in the same size as the heat insulating material 120 to finish.

The finishing panel 150 as described above is made of aluminum, which is generally a non-ferrous metal. At this time, the finishing panel 150 is made of the same size as the plate member 110.

Next, the second adhesive 160 constituting the present invention is for attaching the finishing panel 150 to the rear surface of the heat insulating material 120, the second adhesive 160 is as shown in Figures 1 to 3 Likewise, it is arranged between the finishing panel 150 and the carbon fiber heating element 140 to fix the carbon fiber heating element 140 between the finishing panel 150 and the insulating material 120 through adhesion to the back of the insulating material 120.

Meanwhile, the sign 100 for preventing condensation using the carbon heating element according to the present invention as described above is a plate member 110, a first adhesive 130, a heat insulating material 120, a carbon fiber heating element 140, a second adhesive ( 160) and the finishing panel 150 are sequentially arranged, and then pressed back and forth in the middle of applying heat, while the first adhesive 130 and the second adhesive 160 are melted, the plate member 110, the heat insulating material 120, The carbon fiber heating element 140 and the finishing panel 150 can be adhesively bonded.

Next, the temperature and humidity sensing means constituting the present invention is to detect the inside and outside temperature and humidity of the sign 100, and these temperature and humidity sensing means are inside the sign 100 as shown in FIG. The dew point temperature is calculated through the controller 180 by detecting the temperature and humidity and the temperature and humidity of the atmosphere.

The temperature and humidity sensing means as described above is installed between the plate member 110 and the finishing panel 150 as shown in Figure 5, the internal temperature and humidity sensor to detect the temperature and humidity inside the sign 100 (170a) and is installed on the outer side of the sign 100 may be made of a configuration of an external temperature and humidity sensor 170b for sensing the air temperature and humidity outside the sign 100.

On the other hand, as described above, the temperature and humidity and the temperature of the air inside the sign 100 detected by the internal temperature and humidity detection sensor 170a and the external temperature and humidity detection sensor 170b constituting the temperature and humidity detection means And humidity data are calculated by the controller 180 so that electricity can be supplied only when the temperature of the plate member 110 approaches the dew point temperature within a certain level (about 1 to 2 ° C).

Next, the controller 180 constituting the present invention is for controlling the carbon fiber heating element 140 and the warning light or auxiliary sign 190, which will be described later, and the controller 180 is turned on as shown in FIG. 5. The temperature of the plate member 110 is within the range of 2 ° C to 5 ° C from the dew point temperature by flowing electricity only when the temperature of the plate member 110 is approached to within a certain level (about 1 to 2 ° C) by the humidity sensing means. It consists of a configuration that energizes or cuts the current to the carbon fiber heating element 140 so as to stay in.

In other words, the controller 180 described above is a sign 100 detected through the internal temperature and humidity detection sensor 170a and the external temperature and humidity detection sensor 170b constituting the temperature and humidity detection means as shown in FIG. 5. It receives internal temperature and humidity and atmospheric temperature and humidity data, and conducts electricity to the carbon fiber heating element 140 only when the temperature approaches the dew point temperature within a certain level (about 1 to 2 ° C) through calculation of the data.

Therefore, as described above, the controller 180 can detect the temperature inside the sign 100 detected through the internal temperature / humidity sensor 170a and the external temperature / humidity sensor 170b constituting the temperature / humidity sensing means. Through the humidity and atmospheric temperature and humidity data, the driving part 142 is energized or cut off to heat the sign 100 by using electricity only at a time when condensation can occur. Also, it can be seen that it becomes large.

In addition, the controller 180 as described above is the temperature inside the sign 100 detected by the internal temperature and humidity sensor 170a and the external temperature and humidity sensor 170b constituting the temperature and humidity sensing means. When the calculation of the humidity and the temperature and humidity data of the atmosphere to receive the dew point or less is calculated, the warning light or the auxiliary sign 190 is controlled to flash the warning light or auxiliary sign 190 to generate a fog warning.

The sign 100 for preventing condensation using the carbon heating element according to the present invention as described above prevents condensation by preventing the condensation by heating the carbon fiber heating element 140 to the plate member 110 through the heat insulating material 120. ) Makes the visibility better. Accordingly, it is possible to secure a safe driving of the driver, as well as to prevent an accident in advance.

In addition, the sign 100 for preventing condensation using the carbon heating element according to the present invention includes a plate member 110, a first adhesive 130, a heat insulating material 120, a carbon fiber heating element 140, a second adhesive 160 and a finish There is an advantage in that mass production can be more easily performed by manufacturing the structure of the panel 150.

In addition, in the technology of the present invention, the temperature, humidity, and atmosphere of the inside of the sign 100 detected through the internal temperature and humidity detection sensor 170a and the external temperature and humidity detection sensor 170b constituting the temperature and humidity detection means. A warning light or an auxiliary sign 190 for controlling the controller 180 when the dew point temperature is lower than the dew point temperature through temperature and humidity data may be further installed on one side of the sign 100.

As described above, by warning the fog warning on the roadside, the driver is allowed to drive safely through slow speed.

As described above, the technology according to the present invention has an effect of allowing the driver to better recognize the sign by preventing condensation on the surface of the sign 100 through the energization of the power when the dew point temperature approaches.

In addition, the technology according to the present invention prevents condensation that may occur by safe driving by preventing condensation, which causes diffuse reflection of light and makes it difficult to check the text on the sign, thereby improving visibility. It has the advantage of being.

The present invention is not limited to the above-described embodiments and can be implemented by variously changing within the range permitted by the technical idea of the present invention.

100. Signs for preventing condensation using carbon heating elements
110. Plate member
120. Insulation
130. First adhesive
140. Carbon fiber heating element
150. Finishing panel
160. Second adhesive
170a. Internal temperature and humidity sensor
170b. External temperature and humidity sensor
180. Controller
190. Warning light or auxiliary sign

Claims (6)

In a signpost that allows you to recognize a variety of situations, such as destinations, rest areas, or danger zones, on a city center, national highway or highway
The sign is a plate member made of a plate having a predetermined size in which letters, symbols, or figures are indicated;
A heat insulating material arranged in the same size on the back surface of the plate member;
A first adhesive adhering the plate member and a heat insulating material;
A carbon fiber heating element arranged on the rear surface of the heat insulating material and heating the plate member through the heat insulating material through application of power;
A finishing panel arranged on the rear surface of the carbon fiber heating element in the same size as the insulating material to finish;
A second adhesive bonding the finishing panel to the rear surface of the carbon fiber heating element;
A temperature and humidity sensing means installed inside and outside between the plate member and the finishing panel to detect temperature and humidity inside and outside; And
The temperature of the plate member stays in the range of 2 ° C. to 5 ° C. above the dew point temperature by flowing electricity only when the temperature of the plate member approaches the dew point temperature within a certain level (about 1 to 2 ° C.) by the temperature and humidity sensing means. To prevent condensation and fogging signs using a carbon heating element composed of a configuration including a controller that energizes or cuts current to the carbon fiber heating element. The method of claim 1, wherein the heat insulating material is carbon fiber heating element to prevent the condensation and fogging using a carbon heating element, characterized in that made of a carbon phosphite foam so that heat can be transferred to the plate member by heating. [3] The sign of anti-condensation and fogging using a carbon heating element according to claim 2, wherein the carbon-force phosphor foam is made of a honeycomb structure. The method of claim 1, wherein the carbon fiber heating element is a sign for preventing condensation and fogging using a carbon heating element, characterized in that the structure of a linear heating element or a planar heating element. According to claim 1, The temperature and humidity sensing means is installed between the plate member and the finishing panel, the internal temperature and humidity sensor for detecting the temperature and humidity inside the sign; And
A sign for preventing condensation and fogging using a carbon heating element, which is installed on one side of the sign and consists of an external temperature and humidity sensor for sensing temperature and humidity outside the sign. The method according to claim 1, wherein one side of the sign is equipped with a carbon heating element, characterized in that a warning light or a sub-signal that emits a warning of fog when the dew point temperature is below the temperature calculated by the temperature and humidity sensing means and the controller is further used. Anti-condensation and fogging signs.

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