JPS631425Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Technical field) The present invention relates to a heat-sensitive sheet heating element.

(Background technology) Conventionally, heat-sensitive sheet heating elements used in electric carpets, etc. have a heat-sensitive sheet heating element with a thickness of about 10 to 30 [μm] on one side of a heat-sensitive resin surface material such as nylon resin with a thickness of about 40 to 80 [μm]. Paste a metal foil such as aluminum foil, then draw a pattern of heat generating lines and temperature detection electrodes on this metal foil with resist ink, and then remove the metal foil in areas other than the resist ink by etching to form a pattern. After that, an insulating film is pasted on both sides. By the way, in this process, printing is usually done with an intaglio printing roll, so due to dimensional limitations of the printing machine and printing roll, the heat-sensitive sheet heating element, which is larger than the printing roll, is usually the same. After consecutively printing the pattern, a part of the pattern is cut out at the joint between the patterns to form the heating line and temperature detection electrode as a series or parallel pattern, and then a heat-sensitive surface shape of a predetermined size is formed. I was getting a heating element.

However, in this type of heat-sensitive sheet heating element made by such a manufacturing method, heating area switching type, whole wattage switching type, or product size that is required when used in wide area heating appliances such as electric carpets, etc. It was necessary to prepare special patterns (print rolls) in advance for each type of heat-sensitive sheet heating element for each of the above-mentioned functions, which had the disadvantage of being extremely wasteful. .
In addition, in recent years, there has been a great need for devices that have the functions of switching the heating area and switching the overall wattage in terms of energy savings, heating sensation, and ease of use. For a heating element, it is necessary to draw a large number of heat generating lines, and as a result, the width of the heat generating line has to be drawn narrowly, or when the overall wattage is changed, the difference between the heat generating part and the non-heat generating part becomes noticeable, or The disadvantage is that there are restrictions on pattern design, such as the inability to draw many patterns in a limited area.

(Purpose of the invention) This invention was proposed to eliminate the above-mentioned drawbacks.The purpose is to easily change the heating area and wattage with a single pattern, and to reduce the number of printing rolls required. It is an object of the present invention to provide a heat-sensitive sheet heating element that can be easily manufactured, reduce costs, and eliminate restrictions on pattern design.

(Disclosure of invention) The present invention will be explained below with reference to the drawings.

FIG. 1 and FIG. 2 show an embodiment of the present invention, in which a heat-sensitive resin surface material 1 made of nylon resin or the like is used.
An auxiliary conductive plate 2 made of metal foil such as aluminum foil is attached to one side of the heat-sensitive resin surface material 1, and two main conductive lines 3, 4 with a predetermined resistance, also made of metal foil, are arranged side by side on the other side of the heat-sensitive resin surface material 1 so as to cover almost the entire area of the heat-sensitive resin surface material 1, thereby forming a main heating portion A.
In addition, in Figure 1, auxiliary conductive lines 3A, 4A are juxtaposed between the main heating portion A and the edge of the heat-sensitive resin surface material 1 and connected in series to both ends of the main conductive lines 3, 4 via connection terminals 3a, 3b, 4a, 4b, thereby forming an auxiliary heating portion B.

Next, at the corner of the upper edge C of the thermosensitive resin surface material 1,
Connecting terminals 3B, 4 connected to the auxiliary conductive lines 3A, 4A and for connecting with other heat-sensitive sheet heating elements
Connecting terminals 3C and 4C are also provided at the corners of the lower edge C' of the thermosensitive resin surface material 1, respectively. Furthermore, these connecting terminals 3
Short-circuit lines 5B, 5C are provided which short-circuit B, 4B and 3C, 4C to make all the main conductive lines 3, 4 and auxiliary conductive lines 3A, 4A a closed circuit, and such short-circuit lines 5B, 5C and Connection terminal 3
B, 4B, 3C, and 4C are formed to be removable as necessary.

After forming the pattern as described above, the insulating films 6, 6 are bonded together from both sides to form a heat-sensitive sheet heating element according to the present invention. Note that 7 in the figure is resist ink. In this embodiment, the auxiliary conductive plate 2 is formed on the surface opposite to the surface on which the main conductive lines 3, 4, etc. are formed, but the present invention is not limited to this. The main conductive line 3 is not limited in any way, but only on one side of the thermosensitive resin surface material 1 without having the auxiliary conductive plate 2.
Needless to say, it also includes a type of heat-sensitive sheet heating element formed with a heat-sensitive sheet.

Next, an example of its use will be explained in detail below.

Fig. 3 shows a case where the present invention is applied to, for example, an electric carpet with a size of 1 tatami mat. Either use the main conductive line 3 as a heat generating line and use the other main conductive line 3 as a temperature detection electrode, or use the main conductive line 3 as a heat generating line corresponding to AC100V, 300W = 33.3Ω, for example, through the connection terminals 3a and 3b, and use the main conductive line 4 as a temperature detection electrode. By using it as a detection electrode, it is possible to switch the wattage of the entire surface. At this time, the auxiliary heating section B is not used, and
The connecting terminals 3C and 4C are cut off as shown in the figure by utilizing the shorting wire 5C. In addition, in FIG. 3, 8 indicates a lead wire.

Here, the temperature detection electrode and the auxiliary conductive plate 2 are provided to control the temperature of the heat generating line, and by applying a high frequency voltage between the temperature detection electrode and the heat generating line, the temperature of the thermosensitive resin surface material 1 is increased. Impedance is detected and temperature control is performed accordingly.

Next, FIG. 4 shows another usage example. In this example, two heat-sensitive sheet heating elements 101 and 102 according to the present invention are used to switch the heating area and heating location, and one heat-sensitive sheet heating element is used. Connection terminal 3 of body 101
B, 4B and connection terminals 3C, 4C of the other heat-sensitive sheet heating element 102 are connected to each other. Also,
By utilizing the short circuit wire 5C of the heat-sensitive sheet heating element 101 and the short-circuit wire 5B of the heat-sensitive sheet heating element 102, the connection terminals 3a, 3b, 4 of one of the heat-sensitive sheet heating elements 101 are connected.
It is configured to feed power from ports a and 4b. In addition, 9 is a notch, and two heat-sensitive sheet heating elements 10
1 and 102 in the direction of the arrow in the figure.

In this usage example, the conductive line 3 or 4 in either one of the heat-sensitive sheet heating elements 101 or 102 is
is used as a heating line equivalent to 300W or 400W,
By using the other conductive line 4 or 3 as a temperature detection electrode or by connecting the connection terminals to each other as appropriate, the two heat-sensitive sheet heating elements 101, 10
By connecting conductive lines 3 or 4 in series across both sides of the carpet, an output of 600W or 800W can be obtained as an electric carpet having an area of 2 tatami mats.

(Effects of the invention) As described above, according to the invention, a pair of conductive lines made of metal foil are arranged in parallel with each other on one side of a heat-sensitive resin surface material with connecting terminals interposed therebetween, and both ends of each conductive line are connected to the The conductive line is connected to the connecting terminals arranged on the edge of the heat-sensitive resin surface material, and these connecting terminals are short-circuited by a shorting wire to form a closed circuit, and the connecting terminal and the shorting wire can be removed. (a) Since it is possible to change the wattage, heating area, and heating location using the same pattern, there is no need to prepare dedicated pattern printing rolls for each function as in the past. Moreover, the molds normally required for processing the terminal parts of this type of heat-sensitive sheet heating element can be used in common, making manufacturing easier.
Cost reduction can be achieved.

(b) By replacing the heating line and temperature detection electrode, the function (power consumption) can be changed, so the number of terminals can be reduced, and since there are only two patterns, the heating line and the temperature detection electrode, dense wiring is possible. , restrictions on pattern design are minimized, and temperature unevenness can also be reduced.

It has the following effects.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a sectional view, and FIGS. 3 and 4 are plan views showing examples of use. 1...Thermosensitive resin surface material, 2...Auxiliary conductive plate, 3,
4... Main conductor line, 3a, 3b, 4a, 4b...
Connection terminal, 3A, 4A...Auxiliary conductive line, 3B,
4B, 3C, 4C... Connection terminal, 5B, 5C...
Short-circuit wire, 101, 102... Heat-sensitive sheet heating element, A
...Main heat generating part, B...Auxiliary heat generating part, C...Top edge, C'...Bottom edge.

Claims (1)

[Claims for Utility Model Registration] (1) A pair of conductive lines made of metal foil are arranged in parallel with each other with connection terminals interposed on one side of a heat-sensitive resin surface, and both ends of each conductive line are connected to the heat-sensitive resin surface. The conductive line is connected to connecting terminals arranged on the edge of the material, and these connecting terminals are short-circuited by a shorting wire to form a closed circuit, and the connecting terminal and the shorting wire are formed to be removable. A heat-sensitive sheet heating element characterized by: (2) An auxiliary conductive plate is placed on one side of the heat-sensitive resin surface material,
The heat-sensitive sheet heating element according to claim 1, wherein a conductive line is disposed over substantially the entire other surface of the heat-sensitive resin face material.