Re: Alternative LED bulbs - ECU confusion?



Dave Plowman (News) wrote:
In article <TcFQi.10715$ah6.9853@xxxxxxxxxxxxxxxxxxxx>,
DCA <dca860MAPS@xxxxxxxxxxxxxxx> wrote:
Take a look and tell me what you think - these seem pretty well designed to widen the viewing angle:
http://www.virtualvillage.co.uk/Items/002510-030?

These simply don't produce the same light levels as a 21 watt indicator
bulb in the normal reflector.

Euro car lighting parts must be 'E' marked to conform with those regs. And
non of these replacements are - simply because they can't produce the
correct spread of light at an intensity to replace a 21 watt filament
type. The other type of LED replacement with 5mm leds 'firing' forward do
just about produce the same intensity - but only over a very narrow angle.

For safety lights like indicators etc where a wide viewing angle is
required these things are positively dangerous - they can't be seen in
bright daylight.

You're probably right but these ones have high intensity pointing to the rear with side clusters for the reflectors
They *may* be very good and I think I will give it a go with front indicators first
As for E marking - the lack of it doesn't mean they don't comply, it merely means they haven't been type approved. This could be due to tyhe fact that it costs so much to achieve these markings. It's rather like saying that someone who has passed a driving test is a better driver than someone who hasn't - which of course is not necessarily true (just that passing proves it!).
Worth a try for £5
.



Relevant Pages

  • Re: LED Specification Question
    ... >don@manx.misty.com (Don Klipstein) wrote: ... A one steradian portion of the surface of a sphere ... So, for an LED with a 50-degree viewing angle, the ... outside the viewing angle and how much the radiation intensity varies ...
    (sci.electronics.components)
  • Re: Alternative LED bulbs - ECU confusion?
    ... These simply don't produce the same light levels as a 21 watt indicator ... The other type of LED replacement with 5mm leds 'firing' forward do ... just about produce the same intensity - but only over a very narrow angle. ... For safety lights like indicators etc where a wide viewing angle is ...
    (alt.autos.bmw)