Parking Area Lighting - Replacements for Metal halide Bulb

[richanton]

I have some existing parking lot 250 watt and 400 watt metal Halide fixtures. They are Lithonia Polestars. The latest searches I do seem to indicate that there are LED equivalent bulbs, but they are expensive $200- $300. Has anyone tried to do this and had any issues with overheating. The Polestar fixture appears to be a sealed fixture type.

 

[richanton]

Some further info. This is the bulb I am looking at.

http://www.ledglobalsupply.com/led-commercial-bulbs/250-watt-hid-led-retrofit/

I'm thinking this lamp requires airflow around it and may not be suitable with a sealed parking area fixture.

 

[chicopee]

The description of a cooling fan within the bulb suggests unsuitability within sealed fixtures. I did not think that LED got that hot. Let us what you found out and the action taken. I would definitly discuss the situation with the supplier.

 

[ScottyUK]

LED sources certainly get hot. Have a look at the elaborate heatsinking arrangements on the larger designs. Often the designer integrates the fins into the housing.

 

[IRstuff]

It may be OK, but it's something that you would need to discuss with the manufacturer. The link cited does not provide sufficient information about operating temperature and environmental constraints. If the fixtures are large enough, and the walls are good thermal conductors, there may be sufficient circulation to transfer heat to the fixture's walls and then to the outside. One might hope that the manufacturer recognized this as a possible operation scenario and designed his system for this type of application. Or not...

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[IRstuff]

Oh, to help with the heat transfer, the inside and outside of the fixture could be augmented with pin fins or somesuch

TTFN
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