INTERNAL PRESSURE ADJUSTMENT FILTER FOR AUTOMOBILE HEADLIGHT

摘要

PROBLEM TO BE SOLVED: To provide an internal pressure adjustment filter adjusting internal pressure of an automobile headlight pressurized by heat rise and exhibiting water/dust proof function. SOLUTION: The internal pressure adjustment filter for the automobile headlight of this invention uses a permeable film made of a craze allowing gas to pass but not allowing such as water or particles like dust in a slightly pressurized state as an internal pressure adjustment filter to adjust the internal pressure of the automobile headlight pressurized by heat rise. COPYRIGHT: (C)2006,JPO&NCIPI