| 摘要 |
<p>A visual signaling device has one or more light source modules (10). Each module (10) is of 'Tri-liptic', i.e., generally triangular shape, but with the triangle corners rounded. Inside the triangle, is a perfect circle, to aid in the optical dispersion of the light source (74). The modules are each formed by back (18, 20) and front moldings (22). The light source module (10) contains light source (26) on a printed circuit board (70). This module also contains the electronics causing light source to flash, be illuminated constantly or a reflector to rotate around a stationery bulb (74). A conduit (60), which is a strip of printed circuit board with connectors at its opposite ends, extends between the top and bottom of each module of the stack. The board containing the light source is inserted via guides (76) into another connector which is attached to the conduit. The light source module (10) may readily be removed and may be interconnected into a stack by connection of the tops and bottoms of the back moldings of adjacent modules in the stack by means of interlocking projection and slots (36, 38). A cover (14) and a base (12) may be connected to the topmost and lowermost modules of the stack. The base may contain an audible warning source (82). The connection of the modules in the stack does not require separate rods or screws which extend through the entire stack.</p> |
