Spehro Pefhany wrote:
>
> At 08:28 AM 7/4/01 -0400, you wrote:
> >[LED buld replacements]
> >> why cant I just buy a light
> >> source built onto a pcboard that just screws into the socket.
> >
> >This is coming, but not quite yet.  The price would still be too high to
> >achieve the volumes necessary.  Note that LED lights are currently going
> >into applications where the cost of changing the bulb is very high, the
> >light gets switched on/off frequently, and the light is an indicator as
> >apposed to providing general illumination.
>
> Also, as indicators, most of them are monochromatic (traffic signals, brake
> lights on buses), where most of the energy from the incandescent is wasted
> in the filter.


And in traffic lights the 20 degree directionality
of the leds is desirable, very unlike house lighting.
:o)
-Roman

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