HIGH VOLTAGE BOBBIN HAVING FIXING GROOVE FOR SUSTAINING INTERVAL BETWEEN INSULATING FILM LAYERS

摘要

PURPOSE: A high voltage bobbin having a fixing groove for sustaining an interval between insulating film layers is provided to prevent a short-circuit phenomenon of a high voltage coil by fixing both end portions of an insulating film to a fixing groove formed on an inner face of a stopper. CONSTITUTION: A high voltage coil(14) is used for boosting a pulse voltage generated from a low voltage bobbin to a high voltage. An insulating film(15) is used for insulating the high voltage coil(14). A high voltage bobbin(10) is formed with the high voltage coil(14) and the insulating film(15) wound around the high voltage coil(14). A fixing groove(12a) is formed on an inner face of a stopper(12) facing a high voltage bobbin(10). The fixing groove(12a) has the same size as an outer circumference of the insulating film(15). Both end portions of the insulating film(15) are fixed the fixing groove(12a).