One-Way
Fluorescent Illuminated
Case Signs
Specification
1.0 Illuminated Case Signs
(General)
1.1 An illuminated case sign shall
display the designated traffic sign legend clearly and legibly in daylight hours
without being energized and at night when energized.
The sign assembly shall consist of an extruded aluminum housing and door
of the size specified. A 1/8”
thick white translucent polycarbonate sign face with the legend applied shall be
installed in a hinged door on the front of the sign for easy access.
Illumination shall be by four (4) high output fluorescent lamp fixtures.
1.2 Most messages listed in Manual of
Uniform Traffic Control Devices are available.
Custom messages to fit various traffic control situations are also
available upon request.
2.0 One Sided
2.1 A one sided sign (one way) shall
have a hinged, extruded aluminum service door on one side only, containing the
sign face with the message as described in 1.2.
This arrangement allows the sign to display the message in one direction.
2.2 The door of a one sided sign,
when opened shall allow full access to all of the serviceable components in the
sign for cleaning and maintenance.
3.0 Mechanical Construction
3.1 The sign shall be constructed
using a weatherproof, aluminum housing consisting of an 8” deep, .125”
thick, extruded aluminum body, and a .063” aluminum back.
All corners are continuous TIG (Tungsten Inert Gas) welded to provide a
weatherproof seal around the entire housing.
3.2 The door shall be constructed of
.125” thick extruded aluminum. Two
corners are continuous TIG welded with the other two screwed together to make
one side of the door removable for installation of the sign face.
The door is fastened to the housing on the left by two (2), .040” x 1
1/16” open stainless steel hinges. The
door shall be held secure onto a 1” wide mating surface in the extrusion by
one or more (depending on size) quarter-turn link locks.
3.3 All surfaces of the sign shall be
etched and primed in accordance to industry standards before receiving
appropriate color coats of industrial enamel.
3.4 All fasteners and hardware shall
be corrosion resistant stainless steel. No
tools are required for routine maintenance such as a lamp change.
3.5 Drainage shall be provided by
four drain holes located at the four corners of the housing bottoms.
4.0 Electrical
4.1 Lamps shall be four (4) T12/800
MA High Output Fluorescent.
4.2 The ballast shall be encased and
potted and shall be rated for 800 MA.
4.3 The lamp sockets shall be of the
spring-loaded, snap-in type with rubber gaskets to prevent water damage.
4.4 All wiring shall be secured by
insulated wire compression nuts.
4.5 A barrier type terminal strip is
provided for electrical connection of field wires.
4.6 The sign shall be capable of
continuous operation over a range of temperatures of –35 degrees to +165
degrees Fahrenheit.
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