The invention discloses a navigation
signal lamp light shield, and relates to the technical field of navigation
signal lamps, the navigation
signal lamp light shield comprises a cylinder, through an adjusting
assembly and a sealing
assembly, when a
signal lamp body is cooled, a
micro motor is started, and an embedded plate is driven
through transmission of a rotating shaft, a limiting rod and a lifting column, so that a rotating plate rotates in a groove; when heat dissipation is not needed at the low temperature on the sea, the
micro motor is started again to rotate reversely, the rotating plate rotates reversely through the same transmission, the ventilation opening and the heat dissipation opening do not coincide, the
barrel is closed to prevent
water vapor from entering, and after closing is completed, the electric push rod is started to contract, the embedded plate is moved from the rotating plate embedded groove to the rotating plate embedded groove, and heat dissipation is achieved. And after the embedded plate is embedded, the
micro motor is started again, the rotating plate is rotated
through transmission, the limiting rod and the moving block are driven to move, the transparent arc-shaped plate is gathered into a circle to wrap heat, low-temperature shrinkage
embrittlement of the
signal lamp material is prevented, and the risk of structural breakage is reduced.