- Visi-Flash
Visi-Flash was the
trade name used byR. E. Dietz Company for their line ofbattery power edtransistor izedbarricade warning lights. In1958 , Dietz was the first company to offer battery powered barricade lights. These lights are commonly seen along highway construction zones or other road & highway hazards. Before the development of these lights, oil burninglanterns and "highway torches" which resembled cannon balls were used. Naturally these could pose afire hazard .The main body of these lights were manufactured of
steel and later high impactplastic . The lenses used were mainlyyellow , though examples ofred green andblue exist. Their internalcircuits were either 6 or 12 volt DC. 12volt units used a highercandle power bulb though battery life was about half of the 6 volt models. These lights either blink or stay illuminated(no flashing circuit) depending on model with all models containing an on-offswitch . Later models also used aphotocell for dusk to dawn operation which saved on battery life considerably. Both design voltages used two 6 volt lantern batteries. Certain models of these warning lights command high collector value. There are no current web sources for further information about these warning lights. Several other companies also produced barricade lights but Dietz Visi-Flash was by far the largest, selling them world wide. The trade name Visi-Flash was later purchased by Riva Plastics Corp in the late 1980s. Riva Plastics Corp is no longer in business.ee also
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barricade
*R.E. Dietz Company External links
* [http://home.earthlink.net/~pearsond/lantern.htm#C1 R.E. Dietz Company history]
* [http://www.lanternnet.com/history.htm R.E. Dietz Company time-line]
* [http://home.earthlink.net/~trafficgard/m40intro.html Dietz Traffic-Gard history]
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