| 摘要 |
A lamp cover includes a main plate portion which faces a right side surface of a lamp casing and an upper side-plate portion and a lower side-plate portion which overlap an upper side surface and a lower side surface of the lamp casing arranged adjacent to the right side surface of the lamp casing. A projection which is formed on a front-surface member is brought into contact with an outer side of a front periphery of the main plate portion. The upper side-plate portion and a rear portion of the upper side surface of the lamp casing which the upper side-plate portion overlaps are fastened to each other by screws. Further, the upper side-plate portion and a front portion of the upper side surface of the lamp casing which the upper side plate portion overlaps are fastened together by screws by way of an insulation plate.
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