Patent ID: 11901116
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 0:
1. An internal-combustion-engine ignition coil apparatus that supplies an ignition plug mounted in an internal combustion engine with a voltage for producing a spark discharge, the internal-combustion-engine ignition coil apparatus comprising:
a primary coil;
a secondary coil disposed in such a way as to surround an outer circumferential portion of the primary coil;
an iron core that makes the primary coil and the secondary coil magnetically couple with each other;
a case that contains the primary coil, the secondary coil, and the iron core;
a connector assembly in which a connector and an igniter are integrally fixed to each other; and
a heat sink that cools the igniter,
wherein the connector assembly is assembled to the case,
wherein the igniter is contained in the case,
wherein the case has an opening window that opens in a wall face portion thereof facing a surface portion of the igniter,
wherein the heat sink is inserted into the case through the opening window and is bonded not only to the surface portion of the igniter with a first adhesive but also to the inner circumferential surface of the opening window with a second adhesive, and the heat sink has an exposed portion that is exposed to the outside of the case through the opening window, and
wherein a potting resin is filled into the case.