On Mon, 22 Aug 2016 18:26:40 +0100, Andy Burns wrote:

Johnny B Good wrote:

I don't know about these "Corn" type LED lamps of which you speak,
unless you're referring to the "Corn Cob" type LED lamp.

First came LED corn cob lamps, e.g.

http://img.dxcdn.com/productimages/sku_45375_1.jpg

Then lamps built around COB (chip on board) LEDs where the bare modules
come in various shapes and sizes, but typically submerged in yellow
phosphor e.g.

http://img.dxcdn.com/productimages/sku_373438_1.jpg

Now there are corn-cob style lamps using COB LEDs!

http://img.dxcdn.com/productimages/sku_239373_1.jpg

IMO it's best to avoid "corn cob"; yes, "corn" is because the lamp/LEDs look
a bit like corn-on-the-cob, fair enough, but, although some corn are COB
most are SMDs.
I've some v. good COB lamps, with the LEDs on v. translucent ceramic blades
and they give good dispersion and stay cool.
--
Peter.
The gods will stay away
whilst religions hold sway