JPS5921514Y2 - electric heating equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to electric heating devices such as electric cushions and electric blankets.

Conventional electric heating devices have a heating wire placed inside a futon, for example, and a thermostat buried therein to control the temperature.

However, this thermostat was relatively large and rigid, giving the user a lumpy feeling and making it uncomfortable to use.

The present invention was developed based on these circumstances, and its purpose is to provide a self-controlling sheet heating element and a heating wire connected to it within the body of the heating device, and to create a self-regulating sheet heating element. The present invention aims to provide an electric heating device that can eliminate the above-mentioned drawbacks by controlling the temperature of the body.

An embodiment of the present invention will be described below based on an electric cushion shown in FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a heating device main body, for example, a cushion main body, and a self-control type sheet heating element 2 is disposed in the center of the cushion main body 1.

This heating element 2 is called Cellstar, a product of Tokyo Cosmos Electric Co., Ltd., and has the structure shown in FIG.

That is, 3 is a heating layer, that is, a resistance paste formed extremely thinly by mixing carbon, graphite, and polyethylene, and silver electrodes 4 a and 4 b are provided at both ends of this resistance paste 3 .

Furthermore, an insulating substrate 5 made of polyester or the like and formed extremely thin is attached to one side of the resistor paste 3.

Furthermore, an insulating sheet 6 made of polyester or the like and having a thickness of 1.2 to 50 .mu.m is adhered to the other surface of the resistor paste 3.

This self-control type sheet heating element 2 has a temperature of 0.3 to 0.
It is formed to have a thickness of 988 mm, thereby providing flexibility.

The electrodes 4a,
Terminals 7 a and 7 b connected to 4 b are led out, and one ends of heating wires 8 a and 8 b are connected to these terminals 7 a and 7 b.

The heating elements 8a and 8b are respectively arranged in the cushion body 1 in a meandering manner in the plane direction with respect to the planar heating element 2, and the other ends are connected to the outlet portion 9 at one corner of the cushion body 1.

The operation of the electric cushion having such a structure will be explained.

When the outlet section 9 is connected to a power source, the heating wire 8a,
8b and the self-regulating sheet heating element 2 generate heat.

At this time, the central part of the cushion body 1 is heated by the heat generated by the planar heating element 2, and the peripheral part of the cushion body 1 is heated by the heat generated by the heating elements 8a and 8b, so that the cushion body 1 is heated over the entire area. It is heated almost uniformly throughout.

Furthermore, since the resistance of the resistance paste 3 of the sheet heating element 2 increases as the temperature rises, the output of the sheet heating element 2 and the heating elements 8 a and 8 b connected in series thereto can be controlled. .

However, since the planar heating element 2 is extremely thin and flexible, even when the user sits on the cushion body 1, the user does not know the existence of the planar heating element 2. Extremely comfortable to use.

Note that the present invention is not limited to the above-mentioned embodiments, and various embodiments are possible.

For example, as shown in FIG. 3, the present invention may be applied to an electric blanket.

To explain below, 10 in the figure is a blanket main body as a warming device main body, and a planar heating element 11 similar to that described above is embedded in the end of the blanket main body 10 on which the feet are hung.
At both ends of this planar heating element 11 there are heating wires 12a, 12.
b is connected, one heating wire 12 a is connected to the blanket body 10
They are arranged in a meandering manner along the surface direction of the planar heating element 11 over the entire area.

In such a configuration, the sheet heating element 11
Since it generates heat evenly throughout the body, it can evenly warm the area around your feet.

As explained above, the present invention has a self-regulating sheet heating element and a heating wire connected in series with it arranged in a meandering direction in the surface direction of the sheet heating element within the body of the heating device. .

Therefore, temperature control can be achieved using an extremely thin planar heating element, which eliminates the need for a built-in thermostat as in the past. Since it is made to spread in the direction, the heating element as a whole can be made very thin without impairing its flexibility.

Therefore, it is extremely effective in improving the comfort of use with flat, flexible heating devices such as cushions and blankets that are used against the body.

Further, since the sheet heating element and the heating wire are arranged independently in the plane direction, there is no thermal influence on each other during use, and malfunction of the sheet heating element can be prevented.

[Brief explanation of drawings]

Figures 1 and 2 show one embodiment of the present invention, Figure 1 is a schematic diagram of an electric cushion, Figure 2 is a sectional view of a self-regulating sheet heating element, and Figure 3 shows another embodiment. 1 is a schematic diagram of an electric blanket shown in FIG. 1... Zabuton body (heating device body), 2...
...Self-controlled sheet heating element, 8a, 8b...Heating wire, 10...Blanket body (heating device body), 11
...Surface control type sheet heating element, 12a, 12b...
・・・Heating wire.

Claims (1)

[Scope of utility model registration request] A heating device main body that is flat and flexible; an ultra-thin and flexible self-controlling sheet heating element; and a heating device that is electrically connected in series to the heating device and within the heating device main body. An electric heating device characterized in that the planar heating element includes heating wires arranged in a meandering manner independently in the planar direction without overlapping in the thickness direction.