| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent inferiority of appearance such as stain and haze and deformation such as warpage from being generated by forming paths for compressed air to opening parts of a plurality of air spouts so as to make flow resistances at the same each other. SOLUTION: Four air spouts 64 are formed at the same interval on the periphery of an outer peripheral pushing holder 36. In addition, these opening parts are provided on the periphery of an annular communication path 60 in such a way that two by two are positioned in facing each other in the diameter direction by placing the central axis between them and the diameter lines formed by each pair intersect at right angles. In addition, two of the fourth air paths 62 are formed at facing positions in the diameter direction on the outer peripheral part of the movable side mirror block 34. In addition, these opening parts are at the facing position by placing the central axis between them on the periphery of the annular communication path 60. In addition, the positioning is made in such a way that diameter lines of two of the fourth air paths 62 and the air spouts 64 in the facing directions crosses by approximately 45 degrees each other. In addition, in two air spouts 64, the sum of distances between the air plenum and both fourth air paths 62 are made equal each other. |
