Local ASD Highway Diamond Micros
The tiny Highway Diamond Micro LED lantern was, occasionally, specified for lighting the roadways of new housing developments in Derbyshire. It also saw use in Derby City Centre as a replacement for floodlights running Cosmo-White lamps, in the vehicular underpasses.
These examples are to be found on Colonel Wright Close, off Shutts Lane, in Bakewell.
The Zodion ZCellLED photocell looks rather out of proportion on such a small lantern.
A mere four LEDs are fitted in these examples (with the lantern's total power being a nominal eight Watts), although a maximum of twelve LEDs can be accommodated.
These Highway Diamond Micros were installed on Lucas Lane in Hilton in 2023, following the construction of a new housing development at the end of the lane.
These examples are the 12 LED version.
Prior to the commencement of the building work, this part of Lucas Lane was lit by a solitary CU Phosco P852 attached to a far older Wardle pole bracket. This replaced a pre-1983 side-entry Thorn Beta 5 35 Watt SOX lantern. Prior to the construction of the A50 Derby Southern Bypass in the 1990s, the road continued to meet up with Derby Road, but today, is closed to through traffic. The pole bracket is likely to be decommissioned and removed as part of the Development works.
These lanterns also use the ZCellLED photocell, but without the usual distinctive white band around the inner circumference of the casing.
This example is to be found on the housing development that was constructed on the land occupied formerly by Mackworth College. This part of the site was the first phase to be constructed in the early 2010s, and was lit using Philips 'Iridium' SGS 252s, which was the default residential lantern for Derby at the time. By the time that later phases were constructed, more affordable LED technology had arrived for street lighting, with the columns being fitted with OrangeTEK AriaLEDs from new. With the Iridiums being considered rather outdated lanterns by 2022, Highway Diamond Micros were used to replace them. While the examples seen above were fitted to 5 m columns, at 6 m, the lanterns looked even more bizarre.
These versions are finished in matte grey; the same as my own example is.
These lanterns can (and do) accommodate a maximum of sixteen LEDs.
The examples that replaced the Cosmo-White floodlights on the Sowter Road underpass are seen operating in daylight. The floodlights were operated dusk-dawn from a miniature photocell located on the rear of a small feeder pillar located near the second underpass in the background (which has no lighting beneath it at all). The minicell appeared to have been pushed down inside the pillar when I viewed it prior to the lanterns being changed; hence, the reason for the daytime operation.
The GRP fuse boxes installed with the floodlights have been retained - their cobwebby state will be replicated on the lanterns before too long.
With the camera flash deactivated, a closer match for how the lanterns appear is created.
The lanterns are fitted with NEMA sockets, necessitating the use of Zodion 'Dummy Link' shorting plugs.
The brackets that supported the floodlights (and fuse boxes) have been adapted to accommodate additional brackets that include side-entry outreaches.
The two rearmost LED clusters are used with these lanterns, bringing the total LED quantity to eight per lantern.
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