| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device for road signpost or the like equipped with a projection mask unit that can divide and irradiate light which conforms to the shapes of a plurality of road signpost or the like. SOLUTION: In this projection mask unit 10, that variably draws the shape of projection window of the projection window frame 12 provided in the vicinity of the focal point of the projection lens with mask plates 33 to 36, a dividing mask 60 that divides the projection window is equipped in the projection window frame.
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