| 摘要 |
The map board(1) comprises several units(20) which are assembled on a frame(10) in a mosaic type. A unit has multiple holes into which required signal lamps are inserted, and a power distribution part. The main body(200) of the unit is formed by the combination of a lamp casing(210), a lamp socket board(220), and a power distribution casing(240). A detachable cover(300) is mounted on the upper surface of the main body. The cover optionally contains the parts of railway indicating lines(1a,1b), passages(311) of lamp light, and an operating button(312).
|
