I think it was Mama Bear <MamaBear@No-Spam.noo> who stated:
[color=blue]
>I have a 93 Corolla wagon and am wondering if anyone sells an LED
>replacement for the overhead dome light bulb inside?
>
>It would be great to put something in there that would draw less power and
>put out a lot more light so I can read maps at night when I do deliveries.[/color]
[url]http://www.autolumination.com/festoon.htm[/url] has 'em.
*I* have no idea if they're any good, but someone from the Scion Life
list seemed to like 'em . . . .
On Fri, 29 Dec 2006 17:58:51 -0600, Reasoned Insanity wrote:
[color=blue]
>
> "Mama Bear" <MamaBear@No-Spam.noo> wrote in message
> news:Xns98A8AC13A869DMama@216.196.97.142...[color=green]
>>I have a 93 Corolla wagon and am wondering if anyone sells an LED
>> replacement for the overhead dome light bulb inside?
>>
>> It would be great to put something in there that would draw less power
>> and put out a lot more light so I can read maps at night when I do
>> deliveries.
>>
>>
>>
>> --
>> - Mama Bear[/color]
>
> I've actually been wanting the same thing for my 95 Geo and so far no
> luck. Autozone didn't really have crap other than the regular replacement.[/color]
LEDs are generally a lower light level replacement. Look on-line.
Don Fearn <pooder@charter.net> wrote :
[color=blue]
> I think it was Mama Bear <MamaBear@No-Spam.noo> who stated:
>[color=green]
>>I have a 93 Corolla wagon and am wondering if anyone sells an LED
>>replacement for the overhead dome light bulb inside?
>>
>>It would be great to put something in there that would draw less
>>power and put out a lot more light so I can read maps at night when I
>>do deliveries.[/color]
>
> [url]http://www.autolumination.com/festoon.htm[/url] has 'em.
>
> *I* have no idea if they're any good, but someone from the Scion Life
> list seemed to like 'em . . . .[/color]
On Sat, 30 Dec 2006 00:13:49 GMT, Hachiroku ???? <Trueno@AE86.gts>
wrote:[color=blue]
>
>LEDs are generally a lower light level replacement. Look on-line.[/color]
They don't have to be lower light just because they're LED's.
My airplane has aftermarket wingtip and tail strobes that are actually
LEDs. Those suckers are BRIGHT!
On Sat, 30 Dec 2006 00:13:49 GMT, Hachiroku ???? <Trueno@AE86.gts>
wrote:[color=blue]
>On Fri, 29 Dec 2006 17:58:51 -0600, Reasoned Insanity wrote:[color=green]
>> "Mama Bear" <MamaBear@No-Spam.noo> wrote in message
>> news:Xns98A8AC13A869DMama@216.196.97.142...[/color][/color]
[color=blue][color=green][color=darkred]
>>>I have a 93 Corolla wagon and am wondering if anyone sells an LED
>>> replacement for the overhead dome light bulb inside?
>>>
>>> It would be great to put something in there that would draw less power
>>> and put out a lot more light so I can read maps at night when I do
>>> deliveries.[/color]
>>
>> I've actually been wanting the same thing for my 95 Geo and so far no
>> luck. Autozone didn't really have crap other than the regular replacement.[/color]
>
>LEDs are generally a lower light level replacement. Look on-line.[/color]
You'll have to make an LED array and put it in the housing yourself.
But you can get some serious light output for only a few bucks each.
Light output is no longer a problem - They have 1-watt and 3-watt
Phillips Luxeon LED's have the "Stars" version that are mounted to a
PCB and hexagonal copper substrate chip, and need to be fastened to a
larger heat-sink to cool them - All the light you could want from only
one or two emitters.
[url]www.lumileds.com[/url]
You'd have to trim the back out of the factory dome light and make
little brackets to hold a small CPU-size heatsink at the desired
angle.
Bonehenge <DwightSchrute@DunderMifflin.com> wrote :
[color=blue]
> On Sat, 30 Dec 2006 00:13:49 GMT, Hachiroku ???? <Trueno@AE86.gts>
> wrote:[color=green]
>>
>>LEDs are generally a lower light level replacement. Look on-line.[/color]
>
> They don't have to be lower light just because they're LED's.
>
> My airplane has aftermarket wingtip and tail strobes that are actually
> LEDs. Those suckers are BRIGHT!
>
>
>[/color]
"The LXK2-PW14-U00 White Luxeon K2 is part of the next generation of
LEDs that raises the industry standard for light output, thermal
management, cost and manufacturability. The K2 Power LED offer the
world’s best LED light output with 130 lumens of pure White light,
outstripping the performance of other power LEDs by 15 to 30% and
significantly lowering the cost per lumen."
I saw another article saying that incandescents produce about 15-20
lumens per watt.
White LED Breakthrough: Efficiency Doubles
by Michael Graham Richard, Gatineau, Canada on 11.20.05
Science & Technology (electronics)
white-led-breakthrough-01.jpg
It seems like the light emitting diode (LED) world is going from one
breakthrough to the next. The last one was the accidental invention of
warm white LEDs using quantum dots, and now a Japanese researcher at the
Meijo University, professor Satoshi Kamiyama, has found a way to make
white LEDs more efficient using a purple LED and a silicon carbide
substrate. This new white LED has a brightness of 130 lumens per watt!
"Normal incandescent light bulbs produce 15-20 lumens per watt; modern
fluorescent bulbs produce between 60-110 lumens per watt; and current
LED methods allow for a maximum of 60-70 lumens per watt. In short, if
this is real, it's a big breakthrough." Professor Satoshi Kamiyama will
establish a startup in January to manufacture and sell the LED units. He
already has 40 million yen, but it is expected that other companies will
want a stake in this. Thanks to reader Chris for the tip. ::White LED
doubles efficiency, ::White LED Efficiency Breakthrough?, ::Brighter LED
Break-Through
Bruce L. Bergman <blPYTHONbergman@earthlink.invalid> wrote :
[color=blue]
> On Sat, 30 Dec 2006 00:13:49 GMT, Hachiroku ???? <Trueno@AE86.gts>
> wrote:[color=green]
>>On Fri, 29 Dec 2006 17:58:51 -0600, Reasoned Insanity wrote:[color=darkred]
>>> "Mama Bear" <MamaBear@No-Spam.noo> wrote in message
>>> news:Xns98A8AC13A869DMama@216.196.97.142...[/color][/color]
>[color=green][color=darkred]
>>>>I have a 93 Corolla wagon and am wondering if anyone sells an LED
>>>> replacement for the overhead dome light bulb inside?
>>>>
>>>> It would be great to put something in there that would draw less
>>>> power and put out a lot more light so I can read maps at night
>>>> when I do deliveries.
>>>
>>> I've actually been wanting the same thing for my 95 Geo and so far
>>> no luck. Autozone didn't really have crap other than the regular
>>> replacement.[/color]
>>
>>LEDs are generally a lower light level replacement. Look on-line.[/color]
>
> You'll have to make an LED array and put it in the housing
> yourself.[/color]
Nahhh. The ones on that one page already have 4 LED's in a bulb
equivalent. My question is, how many watts they draw and how many lumens
they put out, which they apparently don't want to tell at that site.
If they put four of the newer 1 watt white LED's in series with a
regulator, they could probably get some nice light output.
I think LED's drop about 1.2 volts, so maybe they could put 10 of the 1
watt ones in series for a dome light and REALLY have some nice output.
Might be pricy though.
On Sat, 30 Dec 2006 00:39:50 +0000, Bonehenge wrote:
[color=blue]
> On Sat, 30 Dec 2006 00:13:49 GMT, Hachiroku ???? <Trueno@AE86.gts> wrote:[color=green]
>>
>>LEDs are generally a lower light level replacement. Look on-line.[/color]
>
> They don't have to be lower light just because they're LED's.
>
> My airplane has aftermarket wingtip and tail strobes that are actually
> LEDs. Those suckers are BRIGHT![/color]
Are they arrays? And are you running a 12 or 24V system?
On Fri, 29 Dec 2006 19:33:05 -0600, Mama Bear wrote:
[color=blue]
> Bonehenge <DwightSchrute@DunderMifflin.com> wrote :
>[color=green]
>> On Sat, 30 Dec 2006 00:13:49 GMT, Hachiroku ???? <Trueno@AE86.gts>
>> wrote:[color=darkred]
>>>
>>>LEDs are generally a lower light level replacement. Look on-line.[/color]
>>
>> They don't have to be lower light just because they're LED's.
>>
>> My airplane has aftermarket wingtip and tail strobes that are actually
>> LEDs. Those suckers are BRIGHT!
>>
>>
>>
>>[/color]
> [url]http://www.ultraleds.co.uk/product_info.php?cPath=50&products_id=1334[/url]
>
> "The LXK2-PW14-U00 White Luxeon K2 is part of the next generation of LEDs
> that raises the industry standard for light output, thermal management,
> cost and manufacturability. The K2 Power LED offer the worldÂ’s best LED
> light output with 130 lumens of pure White light, outstripping the
> performance of other power LEDs by 15 to 30% and significantly lowering
> the cost per lumen."
>
>
> I saw another article saying that incandescents produce about 15-20 lumens
> per watt.[/color]
Damn!
Thanks for the enlightenment! (No pun intended, but it got through anyway!)
In article <Xns98A8BDADC742BMama@216.196.97.142>
[email]MamaBear@No-Spam.noo[/email] "Mama Bear" writes:
[color=blue]
> I think LED's drop about 1.2 volts, [...][/color]
It varies with colour and precise technology. Frex, the tiny red
ones I used around 1976 dropped 2.7v or so, IIRC. I am not up to
date on LEDs but expect similar problems still arise when driving
the things. Light output tended to be set by current (as well as
by precise efficiency and optical characteristics). And the way
volts developed across each LED varied with current made driving
them awkward. Simplest is to string a few LEDs in series but one
needs some kind of device to limit the current. This can be just
a resistor or something more complex like a transistor plus diode
plus two resistors in a "current source". Or something intricate
could be dreamed up; pass there but there is heat to lose, both
from the LEDs and from the current limiter. The big bind was the
variation in characteristics from device to device, though.
Hmm, I really should go mug up on modern LEDs.
--
Andrew Stephenson
"Mama Bear" <MamaBear@No-Spam.noo> wrote in message
news:Xns98A8AC13A869DMama@216.196.97.142...[color=blue]
>I have a 93 Corolla wagon and am wondering if anyone sells an LED
> replacement for the overhead dome light bulb inside?
>
> It would be great to put something in there that would draw less power and
> put out a lot more light so I can read maps at night when I do deliveries.
>
>
>
> --
> - Mama Bear[/color]
Try a google search "3175 led bulb" to see the possibilities.
--
On Sat, 30 Dec 2006 02:11:54 +0000, Andrew Stephenson wrote:
[color=blue]
> In article <Xns98A8BDADC742BMama@216.196.97.142>
> [email]MamaBear@No-Spam.noo[/email] "Mama Bear" writes:
>[color=green]
>> I think LED's drop about 1.2 volts, [...][/color]
>
> It varies with colour and precise technology. Frex, the tiny red ones I
> used around 1976 dropped 2.7v or so, IIRC. I am not up to date on LEDs
> but expect similar problems still arise when driving the things. Light
> output tended to be set by current (as well as by precise efficiency and
> optical characteristics). And the way volts developed across each LED
> varied with current made driving them awkward. Simplest is to string a
> few LEDs in series but one needs some kind of device to limit the current.
> This can be just a resistor or something more complex like a transistor
> plus diode plus two resistors in a "current source". Or something
> intricate could be dreamed up; pass there but there is heat to lose, both
> from the LEDs and from the current limiter. The big bind was the
> variation in characteristics from device to device, though.
>
> Hmm, I really should go mug up on modern LEDs.[/color]
I remember back in '83 we were making a proprietary Power Supply for
Nashua Corp, IIRC, and it had to have these square LEDS as status
indicators. The ones we used glowed green if the unit was operating
properly and yellow/orange-ish if there was a problem. It was about the
ONLY circuit we DIDN'T have trouble with, so I never really learned how it
worked...
I think it was Mama Bear <MamaBear@No-Spam.noo> who stated:
[color=blue]
>Don Fearn <pooder@charter.net> wrote :
>[color=green]
>> I think it was Mama Bear <MamaBear@No-Spam.noo> who stated:
>>[color=darkred]
>>>I have a 93 Corolla wagon and am wondering if anyone sells an LED
>>>replacement for the overhead dome light bulb inside?
>>>
>>>It would be great to put something in there that would draw less
>>>power and put out a lot more light so I can read maps at night when I
>>>do deliveries.[/color]
>>
>> [url]http://www.autolumination.com/festoon.htm[/url] has 'em.
>>
>> *I* have no idea if they're any good, but someone from the Scion Life
>> list seemed to like 'em . . . .[/color]
>
>What's a "festoon" bulb?[/color]
From Google (define: festoon)
festoon -- A carved or painted ornament in the form of a garland of
fruit and flowers tied with ribbons and suspended at both ends in a
swag or loop.
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