Patent ID: 7628130

Claim:
An ignition plug comprising: a hollow main cell having a primary combustion chamber defined in an interior of the main cell, and a bendable extension part formed at a lower end of the main cell; an insulator mounted in a hollow portion of the main cell, to insulate a terminal rod centrally embedded in the main cell; a central electrode having a first electrical contact arranged in the primary combustion chamber, the central electrode extending downwardly from the terminal rod while being surrounded by the insulator; a second electrical contact provided at a lower inner surface of the main cell while being arranged in the primary combustion chamber, the second electrical contact corresponding to the first electrical contact; a cross flame ignition valve having a dish-shaped structure such that the cross flame ignition valve covers the first and second electrical contacts beneath the first and second electrical contacts, the cross flame ignition valve having a main ignition hole and auxiliary ignition holes arranged at a lower central region of the primary combustion chamber; and a heat transfer member interposed between the main cell and the insulator, to transfer heat caused by flames generated during an ignition operation of the first and second electrical contacts to an external of the ignition plug and to cut off leakage of volatile gas.