| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure for a vehicular air conditioner filter enabling a driver to visually confirm appropriate replacement timing of a filter. SOLUTION: This structure includes a filter cartridge provided with a filter paper formed by numbers of layers inside of a case, a light source which is installed in the filter paper and irradiates light to one side of the case and which is installed at a position where light irradiated to the case side is blocked when contaminants adhere on the filter paper and a filter contamination condition results in a predetermined setting condition, and an indication unit installed on the case and projecting light irradiated from the light source in such a manner the same can be visually confirmed from an outside. COPYRIGHT: (C)2004,JPO
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