JPH03181720A - Electric planar warmer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to electric surface heating devices such as electric carpets.

2. Description of the Related Art A conventional electric surface heating device of this type is, for example,
7] As shown in the 814 publication, it had a configuration as shown in FIG.

That is, in an electric carpet in which linear heating elements 1 are arranged in a meandering manner on a heat insulating material 3 and covered with a surface material 2, a temperature display label 9 which is heat-sensitively coated is placed on an arbitrary part of the upper surface of the surface material 2. The purpose is to visually recognize the temperature of the surface of the electric carpet.

Problems to be Solved by the Invention However, in the above configuration, a temperature display label coated with heat-sensitive paint is provided at any location on the electric carpet body on which a heating element is arranged, so the temperature display label is The carpet is attached to the main body of the carpet, which creates convex portions on the surface, making it inconvenient to use and sometimes peeling off or turning up during use. In addition, if the display label is installed at the end of the main body, the electric car vent has a large time constant, so it is difficult to transmit changes in the amount of heat generated by the heating element, so the response of the display label is slow, and the heating element does not reach the end of the main body. It is said that the cost will be higher if you place it and attach a label there! I had a problem.

The present invention solves the above problems and provides an electric surface heating device that allows the surface temperature to be accurately recognized visually.

Means for Solving the Problems In order to solve the above problems, the planar heating device of the present invention is an electric planar heating device such as an electric carpet, and a reversible temperature-sensitive color changing material is individually attached to the main heat generating part and the external surface. The main heat generating part and the partial heat generating part are constructed by using the same heating element and changing the wiring density, and the partial heat generating part has a power density at least equal to or higher than that of the main heat generating part. This is what I did.

Effect With the above configuration, in the same heating element, the wiring density and the amount of heat generated per unit area are in a proportional relationship. The color tone of the material changes.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings. FIG. 1 is a surface configuration diagram of an electric carpet in one embodiment of the present invention.

In FIG. 1, reference numeral 4 denotes an electric carpet main body in which a linear heating element 1 is disposed on a heat insulating material 3 and covered with a surface material 2.

The linear heating element l has a main heating part A wired throughout the main body, and a partial heating part Bl, B2°B3. wired in a part of the main body. The main heating part A and the partial heating parts Bl, B2 . B3
．． is formed from continuous linear heating elements, and the wiring density is (
Main heat generating part A≦partial heat generating part Bl, B2. B3).

The surface material 2 includes partial heat generating portions Bl, B2. Reversible temperature-sensitive color-changing materials CI, C2, and C3, each having a different temperature at which the color tone changes, are provided in a portion in contact with B3.

The amount of heat generated by the heat generating part is controlled by a control means (not shown) built into a controller 5 provided in one corner of the electric carpet main body 4.
controlled by

The reversible thermochromic material 6 provided on the surface material 2 is a thermochromic material woven into the surface material 2 in the form of fibers, or a thermochromic paint or the like is printed on the surface material 2, and the temperature is adjusted to a predetermined temperature. It is structured so that the color tone changes as the color changes.

Next, the operation of the electric carpet constructed as described above will be explained.

FIG. 2 is a schematic diagram of the electric carpet.

The temperature of the linear heating element 1 disposed on the carpet body 4 is taken into the control means 7, and the amount of electricity is controlled according to the temperature set by the setting means 8.

The linear heating element 1 is continuous, and the wiring density is (main heating part A
≦Partial heat generating portion B1=82=83), and the partial heat generating portions B1, B2 . B3 is in contact with reversible temperature-sensitive color changing materials CI, C2, and C3, each having a different temperature at which the color tone changes.

With this configuration, for example, if the temperature that changes in the order of CI, C2, and C3 is high, when the surface temperature is low, only the color tone of C1 changes, and when the surface temperature is medium, CI, C2
changes, and when the surface temperature is high, CI, C2, and C3 change.The locations of the partial heat generating portions where the color tone changes depending on the surface temperature are different. Therefore, the surface temperature of the carpet body 4 can be clearly grasped visually.

The area of this partial heating section is small enough to be visually recognized by the user, so it only needs to be a small part of the entire main body, and the wiring density can be considerably increased, so that the color tone changes instantly and uniformly.

In this embodiment, the number of partial heat generating parts is three, but the number is not limited to this, and the number of surface temperatures that can be classified by job increases depending on the number of partial heat generating parts.

In this example, C1 changes to blue, C2 changes to yellow, and C3 changes to red. Therefore, at low temperature, blue changes, and at medium humidity, blue and yellow change.
At high temperatures, blue, yellow, and red appear on the surface material 2.

In addition, as shown in Figure 3, the temperature-sensitive material is used as a printed pattern.
You can also add interest to the design.

Next, another embodiment of the present invention will be described with reference to FIG.

The difference between this embodiment and the previous embodiment is that the partial heating section B1
, B2. The wiring is arranged so that the wiring density of each of B3 satisfies 81≧82≧B3, and the surface thereof is covered with one sheet of temperature-sensitive color-changing material C.

The effect is as follows: Bl, B2. Since the wiring densities of B3 are different, the locations where the color tone of the partial heat generating portion changes depending on the surface temperature of the main body 4 are different.

That is, #S is applied in the order of wiring density B1≧2≧B3, so when the surface temperature is low, B1 is used, when the surface temperature is medium, Bl and B2 are used, and when the surface temperature is high, Bl, B2
．． The color tone of B3 changes.

In the above two embodiments, the surface material and the heating element are integrated, but as shown in FIG. 5, a temperature-sensitive material may be applied to the part of the cover part 8 of the electric carpet that is in contact with the partial heating part B. .

In addition, the present invention can be applied to each aspect of an electric carpet in which a plurality of heating wires are wired in one main body and the area can be switched.

In the present invention, since the main heat generating part A and the partial heat generating part B are continuous, it can be easily produced at low cost.

Since the reversible temperature-sensitive color-changing material C is provided on the surface material 2, there is no unevenness on the surface and it is easy to use.

Furthermore, the change in color tone of the temperature-sensitive material adds design interest and increases the added value of the present invention.

Effects of the Invention As described above, the electric surface heating device of the present invention provides the following effects.

(1) A main heat generating part and a plurality of partial heat generating parts each having a reversible temperature-sensitive color changing material in contact with the external surface are provided, and the main heat generating part and the partial heat generating parts are constructed by using the same heating element and changing the wiring density. The power density of the partial heat generating parts is at least equal to or higher than that of the main heat generating part, or the temperature sensitive material is of one type and the wiring density of each of the partial heat generating parts is changed. Depending on the surface temperature of the main body, the color tone of the temperature-sensitive material in contact with the partial heating part changes instantly and uniformly.

Therefore, the surface temperature can be accurately recognized visually, and there is no need to worry about not noticing it for a long time while the power is on, or forgetting to turn off the power.

(2) The heat-generating part in contact with the temperature-sensing part only needs to have an area that can be visually recognized by the user, so it only needs to be a small part of the entire body, and the wiring spacing is quite short, so the color tone changes instantly and done evenly.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an electric carpet according to a first embodiment of the present invention, FIG. 2 is a schematic diagram of the electric carpet, FIG. 3 is a perspective view of a second embodiment of the present invention, and FIG. 4 is a perspective view of an electric carpet according to a first embodiment of the present invention. is a perspective view of a third embodiment of the present invention, FIG. 5 is a perspective view of a fourth embodiment of the present invention, and FIG. 6 is a perspective view of a conventional electric carpet. 1... Linear heating element, 2... Surface material, 3
...Insulation material, 4...Car vent body,
5... Controller 6... Control means,
7...Setting means, 8...Cover material, A
...Main heat generating part, Bl, B2. B3...
Partial heating part, CI, C2, C3... Reversible thermosensitive color changing material.

Claims (2)

[Claims] (1) A main heat generating part, a plurality of partial heat generating parts, and a reversible temperature-sensitive color-changing material provided individually on the external surface of the plurality of partial heat generating parts, wherein the main heat generating part and the partial heat generating parts are the same heating element. This electric surface heating device is constructed by changing the wiring density, and the partial heat generating part has a power density at least equal to or higher than that of the main heat generating part. (2) The electric surface heating device according to claim (1), wherein the plurality of partial heat generating parts each have a different wiring density.