About twenty five years ago I came upon a traffic light that had
fallen off of a county truck. I removed the light bulbs and used
them for my front and back door entrance lights. They are still
These bulbs are the standard shape screw in bulbs, but are not
frosted. The glass is clear and thick The filament is a small diameter
coil about 3/4 of an inch long and silver in color. There is no
trademark on the bulb.
I have purchased heavy duty bulbs at the hardware store before but I
believe "heavy duty" refers to the bulbs shock resistance not the life
expectancy of the filament under normal use. These bulbs seem to burn
out at a rate similar to standard bulbs.
The traffic signal lights must be special. Does anyone know of a
source for these bulbs, other than falling traffic lights.
On Wed, 26 Nov 2003 16:03:32 -0500, email@example.com wrote:
I've seen commercial long-life bulbs that were rated for more than
120V, usually 130V, in really hard to reach places. I guess the
method is to use a lamp designed for a higher voltage, causing less
stress to the filament, which equals longer life. Of course you won't
get full light output from the bulb, so you may need a higher wattage
Try a "real" electrical supply house, or a supplier like Grainger.
This may work for you:
My house was built in 1994. Not a single bulb burnt out yet. They're
130V long life ones installed by lighting contractor. Also I have
dimmers on most circuits. Visually those bulbs have beefier filament.
They're their house brand called Lightmore.
B a r r y B u r k e J r . wrote:
Yes, like the large outdoor Christmas bulb (C9). I replace
about 25 or 30 each year. Funny thing, there are some lamps
from the 60s that are still going. But, all of the new ones
go constantly. So, they can build them well, however, why
bother, when the consumer will buy more when they are made like
Tony Hwang wrote:
Some years ago I replaced bulbs in my mother in law's house - she is 95 y.o.
and cannot easily change ceiling bulbs. They were 60 watt, 25,000 hour
rating, standard filament style frosted bulbs. Not a one has burned out. If
you go to google and enter "25,000 hour bulbs" and "20,000 bulbs" (use the
quotation marks, too) you will find several suppliers. The bulbs I used
were about 2 or 3 bucks apiece, mail order, but I dont recall the company.
You are correct that there are various kinds of heavy duty light bulbs.
One of the usual problems is vibration and there are bubs made for that use.
Refrigerators have special lamps designed for cold, but mostly also
vibration (garage door openers, fans etc.)
Post lamp bulbs may be coated with a plastic to help resist the drops of
moisture on them that could break a normal hot bulb.
Long life bulbs are a little different. They seem to come in two
flavors. The traditional flavor were just designed for higher voltage. Take
a 130W lamb and us it one 120V and two things will happen. It will last a
lot longer and it will also put out a lot less light. Use a 90W bulb and it
will burn very bright for a few hours.(photofloods). The other long life
bulb gets its life by design usually using a halogen cycle. They cost more
and may proved both more light and longer life.
In general standard lamp is the best bargain, after considering cost of
the lamp and electricity for the same amount of light. (halogens may do
even better depending on the cost) If you have a difficult to reach light
or one you really don't want to have burn out (like a traffic light) the
long life bulb is worth it.
All of the above is for incandescent lamps only.
Quite true, and not just slightly so. Nearly all the cost of a light bulb
is the juice to run it. A GE 1200 hour standard 100W bulb costs 25 cents
but uses about $12 worth of electricity in its lifetime. Long-life bulbs
are a waste of money, except in the very few places where the labor of
replacement is prohibitive. If you paid for the power in the price of the
bulb up front, few would be sold. Same thing for those "bulb life
extender" buttons, a real swindle that you don't see much any more.
Joe; I figured it was that.**
But was too much of an ex English Gentleman to mention it! Let's
hope some common sense will eventually prevail over there? Eh?
It doesn't look too hopeful again at the moment at Stormont! My
solution is to make all of it, Scotland, Ireland including the
Northern Counties, Wales and England, all part of the European
Community and then it won't matter?
Too much bl**dy nationalism everywhere. The Brits are still
complaining about being invaded by Norman the Conqueror in the
year 1066! And before that the Vikings invaders ..... and before
that again the Romans were everywhere !!!!
Also, sometimes one has to explain history to these North
Americans! I vividly recall trying to explain an anti English
joke about the Boston Tea Party to a Mexican American; he didn't
even know what I was talking about!
Cheers. Terry in Canada.
PS. Boston Tea Party; an act of rebellion by colonists against
British Government laws and taxation led by Samuel Adams in 1773;
groups of colonists dressed as Indians dumped tea into Boston
Harbour as a protest. Later Declaration of Independence July 4th
Yea, the fringes seem to be gaining, but the demographics are changing
in the next ten or so years, it should be a done thing.
Your comment about the EU also makes sense and regardless of the
outcome, I suspect it will be in the back of people's minds.
Joe: I think you mean? With reference to ....
a) "Take a 130 VOLT lamp and use it on 120 volts .... it will
last longer ....".
b) "Use a 90 VOLT bulb (on 120 volts) and it will burn brightly
'perhaps' for a few hours ..... ".
Since wattage is (with a couple of other factors thrown in) a
function of the voltage squared, what you mention;
a) The wattage ratio will be (approximately), [120 x 120]/[130 x
130] = 14,400/16,900 = about 85%. Apart from the wattage used the
amount of light (lumens) will be less and of a different colour
since the filament will be not quite as hot. We use one of these
over our front door, on all night, every night; each bulb has
lasted for 'years'.
b) The wattage ratio will be approximately [120 x 120]/[90 x 90]
= 177% (Very bright and as pointed out a 'photoflood'). Have seen
photographers, especially indoors before the advent of today's
'fast' films, using 115 volters on 230 volts switching them on
for a moment. Even then they lasted only briefly. They were very
bright and HOT since they were at FOUR times the wattage!
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