KR200307196Y1 - Electric heating device and electric cushion having the same - Google Patents

Abstract

An electric heating device and an electric cushion having the same are disclosed. The electric heating device includes a conductive film formed on the base film and a heating film formed on the conductive film. The conductive film is made of a first material having a low electrical resistance, such as silver, and the exothermic film is made of a second material having a high electrical resistance, such as carbon. The conductive film and the heating film are formed on the base film by a silkscreen printing method, and when power is applied to the conductive film, the heating film is resistively heated accordingly. The electric heating device can be used even at low power and has high energy efficiency, and thus can be easily applied to portable, vehicle or home electric cushions.

Description

Electric heating device and electric cushion having the same

The present invention relates to a device that generates heat by application of a power source. More particularly, the present invention relates to a heating device heated by a resistance heating method, a manufacturing method thereof, and an electric cushion having the same.

In general, cushions are used to provide comfort and comfort, and have recently been used by students studying for a long time while sitting in chairs, office workers who work while sitting, and drivers who drive vehicles for a long time. However, in winter there is a disadvantage that the user feels a significant discomfort due to the temperature drop.

Various methods have been devised to solve the above disadvantages. For example, a method of raising the temperature of the cushion by devising a heating wire inside the cushion has been devised. In this case, a general household or office power is used as the power source, and in the case of a vehicle, it is connected to a cigar jack provided inside the vehicle. However, when using a home or office power source is difficult to use in schools or academy, there is a disadvantage that the energy efficiency is low, the electrical energy consumption is large. In addition, there is a disadvantage that an additional device such as a direct current converter is required. On the other hand, when the vehicle power source is used, the power consumption of the vehicle may be completely discharged due to the driver's carelessness because the energy consumption is large, and the life of the vehicle battery may be reduced.

The first object of the present invention for solving the above problems is to provide an electric heating device having a high energy efficiency.

The second object of the present invention is to provide a portable electric cushion having high energy efficiency.

1 is a schematic configuration diagram for explaining an electric heating device according to an embodiment of the present invention.

2 is a cross-sectional view taken along the line A-A shown in FIG. 1.

3 is a schematic plan view for showing another shape of the conductive film and the heating film.

4A and 4B are cross-sectional views for describing the shape of the connection terminal.

5 is a perspective view for showing an electric cushion having the electric heating device shown in FIG.

FIG. 6 is a cross-sectional view for describing the electric cushion shown in FIG. 5.

7 is a perspective view for explaining another example of the electric cushion having the electric heating device shown in FIG.

Explanation of symbols on the main parts of the drawings

100: electric heating device 110: base film

120: conductive film 130: heat generating film

140: cover film 150: connection terminal

200, 300: electric cushion 210: cushion member

220: jacket 230: battery compartment

240, 320: temperature control part 310: power jack

The present invention for achieving the first object, the base film; A conductive film formed on the base film in a line shape and made of a first material having a first electrical resistance; The second film has the same shape as the conductive film and is formed on the conductive film, and has a second electrical resistance higher than the first electrical resistance, and is applied to the power supply when power is applied to the conductive film. A heating film which is heated by resistance to generate heat; And a cover film attached to the entire base film on which the conductive film and the heating film are formed to protect the conductive film and the heating film.

The present invention for achieving the second object, the cushion member for providing a cushion; An electric heating device provided inside the cushion member and generating heat by application of power; And an envelope for wrapping the cushion member, wherein the electric heating device includes: a) a base film; Ii) a conductive film formed in a line shape on the base film, the conductive film comprising a first material having a first electrical resistance; Iii) a second material having the same shape as the conductive film and formed on the conductive film and having a second electrical resistance higher than the first electrical resistance, wherein the power is applied to the conductive film. A heat generating film that is heated by resistance by the power source to generate heat; And iii) a cover film attached to the base film on which the conductive film and the heating film are formed to protect the conductive film and the heating film.

Preferably, the first material includes silver, and the second material preferably includes carbon. The first material and the second material are formed on the base film by a silkscreen printing method, wherein the first material and the second material are printed on the base film in a mixed state with the adhesive resin and the curing agent.

The electric cushion incorporating the electric heating device may maintain a temperature of 30 to 40 ℃ at a voltage of 3 to 6 volts, and may maintain a temperature of 30 to 50 ℃ when using a 12 volt vehicle power source. That is, since the electric heating device and the electric cushion have a high energy efficiency, it can be configured to be portable using a battery, can be configured for a vehicle using a cigar jack of the vehicle, and can be configured for home use using a DC converter. Can be.

When used as a portable battery because it uses a battery, it can be easily used in schools, schools and offices, and when configured for a vehicle is operated at low power, there is no fear of the battery of the vehicle is discharged, does not affect the battery life of the vehicle. In addition, since it is operated at low power when used for home use, it does not burden the user with an electric charge.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment according to the present invention.

1 is a schematic configuration diagram for explaining an electric heating device according to an embodiment of the present invention, Figure 2 is a cross-sectional view according to A-A shown in FIG.

1 and 2, the electric heating device 100 includes a base film 110, a conductive film 120, a heating film 130, and a cover film 140.

The base film 110 has a substantially rectangular shape, is excellent in strength and heat resistance, and is preferably made of a transparent polyethyleneterephthalate (PET) resin.

The conductive film 120 is formed on the base film 110 by a silk screen printing method. The conductive film 120 is preferably made of a first material having a substantially low first electrical resistance. This is to improve energy efficiency, and silver is used as the first material in the embodiment of the present invention. Here, in order to form the conductive film 120 on the base film 110 by the silkscreen method, the first material must be formed in a liquid state. That is, it is preferable to form a liquid first substance by mixing silver, an adhesive resin, and a hardening agent. However, the method of forming the conductive film 120 is not limited to the silkscreen printing method. That is, the conductive film 120 may be formed by various methods, and the method of forming the conductive film 120 does not limit the scope of the present invention. Since the silk screen printing method is generally well known, a detailed description thereof will be omitted.

The conductive film 120 has a shape of a typical resistance hot wire on the base film 110. That is, it is preferable to have a line shape extending in the zigzag direction. Of course, the shape of the conductive film 120 does not limit the scope of the present invention. Here, the width, thickness and length of the conductive film 120 formed by the silkscreen printing method should be appropriately determined according to the size of the power source used. That is, since the resistance of the conductive film 120 changes depending on the width, thickness, and length of the conductive film 120, the resistance of the conductive film 120 may be appropriately adjusted according to the size of the power source used.

The heating film 130 is formed on the conductive film 120. The heat generating film 130 is formed along the conductive film 120 and has the same shape as the shape of the conductive film 120. The heat generating film 130 is preferably formed by a silkscreen printing method in the same manner as the conductive film 120. However, similarly to the method of forming the conductive film 120, the method of forming the heat generating film 130 does not limit the scope of the present invention. The heat generating film 130 is made of a second material having a substantially high second electrical resistance. This is to obtain a high calorific value at low power, and also to improve energy efficiency. That is, when power is applied to the conductive film 120, the heating film 130 is resistance-heated by the application of power. At this time, since the energy consumption is very small, it can be used even at low power, such as a portable battery. In the embodiment of the present invention, carbon is preferably used.

In order to form the heating film 130 on the conductive film 120 by the silkscreen method, the second material must be formed in a liquid state. That is, it is preferable to form the second material in the liquid state by mixing the fine carbon powder, the adhesive resin and the curing agent. However, similarly to the method of forming the conductive film 120, the method of forming the heating film 130 is not limited to the silkscreen printing method. That is, the heating film 130 may be formed by various methods, and the method of forming the heating film 130 does not limit the scope of the present invention. Here, the width, thickness and length of the heat generating film 130 may be changed in various ways depending on the desired temperature range, it is preferable to form approximately the same as the conductive film 120.

Shapes of the conductive film 120 and the heating film 130 may be variously changed. That is, the shapes of the conductive film 120 and the heating film 130 may be variously changed according to the size of the base film 110, the size of the power applied and the desired temperature. The electric heating device 100 ′ shown in FIG. 3 shows another example of the shapes of the conductive film 120 ′ and the heating film 130 ′ formed on the base film 110 ′.

Referring back to FIGS. 1 and 2, the cover film 140 is formed to cover the base film 110 as a whole to protect the conductive film 120 and the heating film 130 formed on the base film 110. have. The shape and material of the cover film 140 are the same as the base film 110.

A pair of connection terminals 150 for power supply are connected to both ends of the conductive film 120, respectively. The connection terminal 150 extends from the end of the conductive film 120 to the outside of the base film 110. At this time, the connection terminal 150 is preferably made of a material having a low electrical resistance. It is attached to the base film 110 in the form of a film.

As shown in FIGS. 4A and 4B, the connection terminals 150 and 150 ′ may be formed on the bottom surface or the top surface of the conductive film 120. As shown in FIG. 4A, the conductive film 120 may be formed after attaching the connection terminal 150 to the base film 110 first, and as shown in FIG. 4B, on the base film 110. After forming the conductive film 120 on the connection terminal 150 ′ may be attached.

The electric heating device 100 having the above configuration can obtain a high heat generation amount at a low power source. In fact, a 6V battery can be used to maintain a temperature of 30 to 40 ° C. for 4 to 8 hours. In addition, when using the automotive 12V power supply can maintain a constant temperature of 30 to 50 ℃, it is also possible to obtain more than the temperature by adjusting the width and thickness and length of the conductive film 120 and the heating film 130. . This means that if the battery is used, it can be easily used in schools, schools, and offices, and when used with a home DC converter, it can be used for home use.

FIG. 5 is a perspective view illustrating an electric cushion having the electric heating device illustrated in FIG. 1, and FIG. 6 is a cross-sectional view illustrating the electric cushion illustrated in FIG. 5.

5 and 6, the illustrated electric cushion 200 includes a cushion member 210 for providing a cushion, an electric heating device 100 for raising the temperature of the electric cushion 200, and a cushion. It includes a shell 220 for wrapping.

The cushion member 210 is to provide comfort and comfort to the user, and various types of cushions are sold on the market, and the present invention is not limited to the type and shape of the cushion. In addition, the outer shell 220 may be used in various kinds.

The electric heating device 100 is disposed inside the cushion member 210, and preferably, the cushion member 210 is disposed above and below the electric heating device 100. This is to prevent damage to the electric heating device 100 during use of the electric cushion 200.

One side of the outer shell 220 includes a battery accommodating part 230 for accommodating a battery for providing electrical energy to the electric heating device 100, and a temperature adjusting part 240 for adjusting a temperature of the electric cushion 200. ) Is connected. As shown, the temperature control unit 240 and the battery housing 230 is formed integrally, but is attached to one side of the outer shell 220, the temperature control unit 240 and the battery housing 230 is the outer shell It may be provided inside or outside the 220.

The temperature controller 240 adjusts the amount of power applied to the electric heating device 100 to adjust the amount of heat generated by the electric heating device 100, and when the electric heating device 100 is abnormally heated, the electric heating device ( The power applied to 100 may be automatically cut off. Since the temperature control unit 240 is well known or can be easily purchased on the market, a detailed description thereof will be omitted.

Therefore, the electric cushion 200 as described above can be easily used in the school, school or work because it uses a battery. It is also possible to use domestic or office electricity instead of batteries using a direct current converter.

7 is a perspective view for explaining another example of the electric cushion having the electric heating device shown in FIG.

Referring to FIG. 7, the illustrated electric heating device 300 has a power jack 310 that can be connected to a cigar jack of a vehicle. Therefore, since the electric heating device 100 is operated by using the power of the vehicle through the power jack 310, it can be easily used in a winter vehicle, and the user can adjust the desired temperature through the temperature controller 320.

Since the electric cushion 300 has high energy efficiency, problems such as discharging of the vehicle battery or shortening the life of the vehicle battery due to user's carelessness do not occur.

According to the present invention as described above, the electric heating device is implemented by silk-screen printing the conductive film and the heating film on the base film. Therefore, the electric heating device shows a high heat generation amount at low power. In addition, since it has high energy efficiency, it can be easily applied to electric cushions for portable, home, office and vehicle.

Although the above has been described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the present invention described in the utility model registration claims below And can be changed.

Claims (6)

Base film; A conductive film formed on the base film in a line shape and made of a first material having a first electrical resistance; The second film has the same shape as the conductive film and is formed on the conductive film, and has a second electrical resistance higher than the first electrical resistance, and is applied to the power supply when power is applied to the conductive film. A heating film which is heated by resistance to generate heat; And And a cover film attached to the base film on which the conductive film and the heating film are formed to protect the conductive film and the heating film. The electric heating device of claim 1, further comprising a pair of connection terminals connected to both ends of the conductive film and extending outward of the base film to apply the power to the conductive film. . The electric heating device of claim 1, wherein the first material includes silver (Ag), and the second material includes carbon (C). A cushion member for providing a cushion; An electric heating device provided inside the cushion member and generating heat by application of power; And It includes a shell for wrapping the cushion member, The electric heating device, Iii) a base film; Ii) a conductive film formed in a line shape on the base film and made of a first material having a first electrical resistance; Iii) a second material having the same shape as the conductive film and formed on the conductive film and having a second electrical resistance higher than the first electrical resistance, wherein the power is applied to the conductive film. A heat generating film that is heated by resistance by the power source to generate heat; And Iii) an electric cushion comprising a cover film attached to the base film on which the conductive film and the heating film are formed to protect the conductive film and the heating film. The battery pack of claim 4, further comprising: a battery accommodating part connected to the conductive film and accommodating a battery for applying the power; And The electric cushion further comprises a temperature controller for controlling the amount of heat of the heating film by adjusting the degree of application of the power. The electric cushion of claim 4, further comprising a power jack connected to the conductive film and connected to a cigar jack provided inside the vehicle to apply the power.