| 摘要 |
[Problem] There are provided a heater having high reliability and durability where the generation of large stress concentration on an end portion of a joining portion between a resistor and leads can be suppressed even when a large electric current flows through the resistor at the time of rapid temperature elevation or the like, and a glow plug provided with the heater. [Solution] A heater (1) includes a resistor (3) including a heat-generating portion (4), one or more leads (8) joined to end portions of the resistor (3), and an insulating base body (9) which covers the resistor (3) and the leads (8). A joining portion between the resistor (3) and the leads (8) includes a region where the resistor (3) is spaced apart from the insulating base body (9) by way of the leads (8) over a whole circumference of the resistor when viewed in cross section of the joining portion. |
