On Mon, 22 Aug 2016 16:55:03 +0100, Harry Bloomfield wrote:

Would I be correct in suggesting that corn type LED lamps are best
suited to situations where the light required is at right angles to the
axis of the light please? As in a outside lantern type of fitting..

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. Assuming this is
the type you mean, then yes, imo! They'd be better suited, especially if
the luminary orients the lamp in the "Cap Down Burning" position to avoid
overheating the electronics in the base[1] due to the very poor
ventilation characteristics most such outside luminaries are cursed with
in the interests of keeping them reasonably proofed against rain ingress
(the tiny breather holes, designed to prevent build up of damp and
exclude most insects larger than an Earwig, don't really count as
ventilation holes for the purposes of keeping the lamp cooled).

[1] For lamps rated less than 20W, such "electronics" may be nothing more
than a "capacitive dropper" rather than a built in sophisticated constant
current driver module. If a suitably high temperature capacitor is used,
they may be able to tolerate much higher temperatures than a
"transistorised" switching regulator module could ever hope to cope with.

--
Johnny B Good