JPS61256586A - Heat generating body - 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 the Invention The present invention relates to a heating element having a positive temperature coefficient of resistance.

2. Description of the Related Art A conventional heating element of this type has electrodes 2 embedded in parallel to a heating element 1 having a positive temperature coefficient of resistance, as shown in FIG. The one shown in Fig. 6 is a coaxial type heating element, which has an electrode 2 at the center of the heating element 1, and the other electrode 2 around the outer periphery of the heating element. is energized and the heating element is activated.

Problems to be Solved by the Invention However, in the above configuration, if the heavy object such as a desk or chair is conductive, the heating element may be deformed at both room temperature and high temperature due to the inherent creep property of the resin. However, there was a problem in that the electrodes came into contact with each other and caused a short circuit.

The present invention solves such conventional problems and aims to eliminate safety.

Means for Solving the Problems In order to solve the above problems, the heating element of the present invention includes an electrode provided at the center of the heating element, one or more insulating threads wound around the heating element, or It has a structure in which an insulating net-like fabric is wrapped around it.

Function The present invention has the configuration described below, in which two heating elements each having an insulating thread or an insulating mesh fabric wound around the outer periphery of the heating element are used.
Even if creep occurs due to a heavy load, the heating element that is made of wood will stop the electrodes from coming close to each other at the thread or mesh fabric, thereby preventing short circuits between the electrodes. Since the heating element is made of two pieces of wood, it can be freely bent. When a planar heating element is used, one end is a conductive plate electrode, and the other end is bonded with the adhesive heating element of the present invention. Even if creep occurs due to heavy objects, the electrodes can be prevented from coming into contact with each other at the thread or mesh wound around the electrodes.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIGS. 1, 2, 3, and 4, 1 is a heating element, and an electrode 2 is provided at the center of this heating element. 2
FIG. 2 is a combination of two heating elements shown in FIG. 1.

FIG. 3 shows the heating element shown in FIG. 1 combined with two heating elements each wrapped with an insulating thread or net 4. FIG. 4 shows a heating element in which the heating element in FIG. 1 is an adhesive heating element, and the heating element is attached to a conductive plate 5 in a planar shape.

In the above structure, flexibility can be obtained because the structure is made by making a single wooden heating element into wires and gluing them together. Wrapping an insulating thread or net around the heating element has the effect of preventing short-circuiting of the electrodes due to external gravity.

Next, another embodiment of the present invention will be described using FIG. 4. The difference in FIG. 4 from the previous embodiment is that the heating element of the present invention is applied to a planar heating element instead of being string-shaped. The heating element is adhered to a conductive plate, and a voltage is applied between the electrode at the center of the heating element and the electrode of the conductive plate. This configuration has the effect of preventing current short-circuiting even if an external weight is applied to the planar photothermal body.

Effects of the Invention As described above, the heating element of the present invention provides the following effects.

(1) Since the electrode is provided at the center of the heating element, stable linearity can be obtained. Since this heating element is configured to fit together, a constant spacing between the electrodes can be maintained, and at the same time, flexibility is good.

(2) Heating element KII! Wrapping the triangular thread or mesh prevents short circuits between the electrodes.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the basic groove structure of a heating element according to a fifth embodiment of the present invention, Fig. 2 is a perspective view of a heating element with the same warp, and Fig. 3 is a perspective view of a heating element with a thread or net wound around the heating element. Figure 4 is a perspective view of the same heating element glued together on a conductive plate and manufactured from a surface.
FIGS. 5 and 6 are perspective views of conventional heating elements. 1... Heating element, 2... Electrode, 3...
・Coating, 4... Insulating thread or net, 5... Mark ・ Conductive plate. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3

Claims (5)

[Claims] (1) A heating element in which electrodes are provided inside a heating element material made of crystalline resin and a conductive material. (2) Claim 1 in which the heating element material is a heating element material having a positive temperature coefficient of resistance, and a plurality of the heating element materials are twisted together.
Heating element described in section. (3) The heating element according to claim 1, wherein an insulating thread or an insulating mesh fabric is wound around the heating element material. (4) The heating element according to claim 1, which is made of resin fiber or vegetable fiber having a higher melting point than the crystalline resin. (5) The heating element according to claim 1, wherein the heating element material is made of a conductive adhesive crystalline resin and attached to a conductive plate, and one electrode is the conductive plate.