Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Kazuyuki Kohara

Takahito Ishii

Mitsuru Yoneyama

Seishi Terakado

Keiko Yasui

Keizo Nakajima

Takehiko Shigeoka

Koji Yoshimoto

Masahiko Ito

Masaki Hanada

Yukio Abe

Tadataka Yamazaki

A planar heating element has an electrical insulating substrate, at least one pair of electrodes that includes thin metal wires covered with conductive cover layers and that is placed on a surface of the electrical insulating substrate, a polymer resistor that is placed on the electrical insulating substrate and that is supplied with electricity from the electrodes, and electrical insulating cover materialthat covers the electrodes and the polymer resistor and that is made to adhere to the electrical insulating substrate by hot melt, and sectional shape of the conductive cover layers is of an ellipse in general with long axis parallel to the surface of the electrical insulating substrate.

Planar heating element and manufacturing method for same

The flexible PTC heating element according to the invention has one of the following constitutions. A portion of an electrodes and a PTC resistor is impregnated into a flexible substrate. A flexible substrate is made of resin foam or rubber material having a concave/convex shape formed on the surface. The flexible PTC heating element has an elongation deformation portion disposed to at least one of an electrode and a PTC resistor. A flexible substrate has adhesiveness and either a flexible substrate or a flexible cover material has an elongation control portion. Therefore, the flexible PTC heating element is highly flexible and excellent in vibration durability.

Flexible PTC heating element and method of manufacturing the heating element

A heating element includes a base substrate, a pair of electrodes, a resistor capable of generating heat, a conductive resin, a terminal member, a hot melt adhesion metal, a hot melt cohesion metal, and a lead wire. The pair of electrodes is provided on the base substrate, and the resistor is formed between the pair of electrodes. The conductive resin is provided on each of the electrodes, and the terminal member is provided on the conductive resin. The adhesion metal is provided on the terminal member, and the cohesion metal forms a molten phase along with the adhesion metal. An end of the lead wire is welded to the cohesion metal. The conductive resin is provided in the vicinity of the adhesion metal so as to be affected by heat of the adhesion metal.

Heating element and production method thereof

Plastic thermistor and thermosensitive device comprising the same

Growing community of inventors

Soraku-gun, Japan

Kazuyuki Kohara