JP2017199565A5

JP2017199565A5 -

Info

Publication number: JP2017199565A5
Application number: JP2016089613A
Authority: JP
Filing date: 2016-04-27
Publication date: 2019-05-16

Description

面状発熱体の第２の態様として、前記第１の態様において、前記Ｋ本の電熱線と前記１対の電極パッドとは、前記絶縁性基材上に導電性インクで印刷された導電パターンにより構成することができる。これにより、低コストで面状発熱体を構成することができる。導電性インクで形成された導電パターンのシート抵抗率が比較的高い場合にも、並列接続により抵抗値を下げることができる。 As a second aspect of the planar heating element according to the first aspect, the K heating wires and the pair of electrode pads are a conductive pattern printed with a conductive ink on the insulating substrate. Can be configured by Thereby, the planar heating element can be configured at low cost. Even when the sheet resistivity of the conductive pattern formed of the conductive ink is relatively high, the parallel connection can reduce the resistance value.

面状発熱体の第３の態様として、前記第２の態様において、前記Ｋ本の電熱線は、同一の線幅および同一の長さを有し、互いに接触することなく、前記絶縁性基材の要発熱領域のほぼ全体を網羅するようにそれぞれの分割エリア内に配置することができる。これにより、各分割エリア内の電熱線の抵抗値を同一にし、要発熱領域内での発熱分布を均一にすることができる。 As a third aspect of the planar heating element, in the second aspect, the K heating wires have the same line width and the same length, and do not contact each other. It can be disposed in each of the divided areas so as to cover substantially the whole of the heat generation required area. Thereby, the resistance value of the heating wire in each division area can be made the same, and the heat generation distribution in the heat generation requiring area can be made uniform.

Claims

A planar heating element having a heating wire disposed on an insulating substrate, comprising:
A pair of electrode pads disposed approximately adjacent to each other on the insulating substrate;
And K (K is an integer of 2 or more) heating wires disposed in electrical parallel connection between the pair of electrode pads on the insulating substrate.
Each heat generating area on the insulating base is divided into K nested areas, the outer divided area is arranged to surround the inner divided area, and each divided area is arranged. A planar heating element characterized in that both ends of a heating wire are respectively connected to the pair of electrode pads.

The planar heating element according to claim 1, wherein the K heating wires and the pair of electrode pads are formed of a conductive pattern formed of a conductive ink on the insulating substrate.

The K heating wires have the same line width and the same length, and do not contact each other in each divided area so as to cover substantially the entire heat generation region of the insulating base material. The planar heating element of Claim 1 or 2 arrange | positioned.

The planar heating element according to claim 3, wherein each heating wire is arranged meandering in at least a part of the path between the pair of electrode pads in each divided area.

The planar heating element according to claim 4, wherein the meandering width of the heating wire meandering in each of the divided areas becomes narrower toward the outer divided area.

The planar heating element according to claim 1 or 2, wherein the K heating wires respectively disposed in the nested K divided areas are set to be longer toward the outer divided area and have a wider line width.