| 摘要 |
A ventilation system for a vehicular lamp including a communication hole formed in the vehicular lamp; a first peripheral wall projecting from a rear surface of the lamp at a position where said first peripheral wall surrounds said communication hole; an upper and lower water preventive walls projecting from said first peripheral wall downwardly of said communication hole; a second peripheral wall surrounding said first peripheral wall, said second peripheral wall projecting from the rear surface of the lamp; a lid member engaging with said second peripheral wall for covering said first and second peripheral walls; a first space defined between the lamp, said lid member and said first peripheral wall, said first space communicating through said communication hole with the lamp chamber; a second space defined between the lamp, said lid member and said upper and lower water preventive walls, said second space communicating with said first space through a first communication passage formed at a first position in the lateral direction; and a third space defined between the lamp, said lid member, said lower water preventive wall and said second peripheral wall, said third space communicating with said second space through a second communication passage formed at a second position opposite to said first position, said third space communicating with atmosphere.
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