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F-t”berth indicator lights can solved this problem easily.It increased two laser projection lamp on the basis of the indicator lights that we frequently used.Figures can be projection to the ground, so that passengers find their own bed conveniently .And the cost of the laser projection lamp is very low.This design not only avoid the waste of resources caused by the new mould,but also save time and reduce trouble in the process of looking for their bed. Solve a common problem with low cost .
China University of Mining and Technology