| 摘要 |
[Object] To provide a highly-reliable and durable heater in which even when a high current flows through a resistor, occurrence of a micro crack in a junction between the resistor and a lead and change of the resistance value of the heater are suppressed, and a glow plug provided with the same. [Solution] The present invention is a heater (1) including: a resistor (3) including a heat-generating portion (4); a lead (8) joined to an end portion of the resistor (3); and an insulating base (9) covering the resistor (3) and the lead (8). The heater (1) includes a connection portion (2) in which the resistor (3) and the lead (8) overlap each other in a direction perpendicular to an axial direction of the lead (8), and a boundary between the resistor (3) and the lead (8) has a curved shape when the connection portion (2) is seen in a cross section perpendicular to the axial direction. |
