Title:
セラミックヒータ及びグロープラグ
Document Type and Number:
Japanese Patent JP6786412
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a ceramic heater or a glow plug which can raise temperature rise performance and reduce power consumption.SOLUTION: A ceramic heater 40 includes a substrate 110 made of an insulating ceramic and a heating resistor 120 made of a conductive ceramic and buried in the substrate 110. A heat generating portion 121 of the heating resistor 120 includes a first resistance portion 121A connected to the distal end side of a first conductive portion 122 and extending along the axial direction, a second resistance portion 121B connected to the distal end side of a second conductive portion 123 and extending along the axial direction, and a connecting portion 121C that connects the distal end sides of the first resistance portion 121A and the second resistance portion 121B. A low heat conducting portion 130 has a thermal conductivity lower than that of the substrate 110, and when the ceramic heater 40 is viewed in a cross section orthogonal to the axial direction passing through the first resistance portion 121A and the second resistance portion 121B, at least a part of the ceramic heater is disposed inside a region where the first resistance portion 121A and the second resistance portion 121B face each other.SELECTED DRAWING: Figure 2
Inventors:
Akio Ihara
Yuki Takeuchi
Yoshihito Inokai
Yuki Takeuchi
Yoshihito Inokai
Application Number:
JP2017022053A
Publication Date:
November 18, 2020
Filing Date:
February 09, 2017
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
H05B3/48; F23Q7/00
Domestic Patent References:
| JP2006024394A | ||||
| JP7190360A |
Foreign References:
| WO2009057597A1 |
Attorney, Agent or Firm:
Hiroki Nakajima