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Why Use LEDs For RV
Lighting?
It is important that
Full-Time RVers, and many Part-Timers, use at
least some LED lamps in their RVs. The four
primary reasons for using LED lamps in an RV
are
Safer
- hot incandescent cause
fires in RVs - LEDs lessen your
danger
Cooler
- LED lamps run at least 200
degrees F cooler than incandescent bulbs -
850 degrees F cooler than halogen
bulbs
Power
Savings - LEDs use
1/7th of the electrical power required by an
incandescent light for the same
luminosity
Longer
Lasting - LEDs
last 11 years on the average, 100 times
longer than equivalent incandescent
bulbs
You save hassle, time and
money, such as
Batteries
stay charged much longer, and
so live longer
Replacing
bulbs is no longer a
continuing task and cost
Generator
does not need to run so much,
saving on expensive fuel
Solar Panels
can keep up even if you burn
LED lamps all night
Bugs
fly away to find warmer
lamps
You and your
family can survive
longer "off the grid,"
whether on
vacation or in evacuation or survival
mode
The lighting fixtures in our
homes and RVs operate by converting electrical
current into light, but most fixtures use a
much different process than LEDs and create a
different mix of light.
The most common light
fixture is the the "incandescent"
bulb. When an electrical current flows through
a wire filament (Edison used a carbonized silk
thread in the first light bulbs), the
resistance in the filament causes the filament
to heat, becoming so hot that it glows with
visible light in addition to emitting infrared
heat. In fact, in most incandescent bulbs over
85% of the electrical energy becomes heat; only
15% becomes useful light. That heats the bulb
and base of incandescents to above 500 degrees
Fahrenheit, higher if it is
confined.
The light emitted by an
"incandescent" bulb is composed of a
spectrum of colors, from infrared to
ultraviolet, and depending upon the type of
filament and the amount of energy expended,
emits a spectrum somewhat like the sun just
before a dusty, red sunset.
One variation of the
"incandescent" bulb is the halogen
bulb. Instead of sending the current through a
metal filament, the current vaporizes the
tungsten filament into a bromide gas to create
a plasma. This heats the gas to the point that
it glows just like the filament does. The
halogen spectrum is closer to that of the sun
on a bright day, but still, most of the energy
goes into simply creating heat. The bulb and
base of
Halogen bulbs get even
hotter than normal incandescents. In fact, the
quartz glass must reach at least 700 degrees
Fahrenheit before the bulb begins to operate
correctly, so DO NOT TOUCH HALOGENS when
lit. The usual operating
temperature of a halogen bulb is much hotter
than a normal incandescent (as much as 1,000
degrees Fahrenheit), and there is a greater
danger of burns and the bulb
shattering.
The fluorescent light became
popular several decades ago as an alternative
to incandescent lighting. Fluorescents operate
by exciting the inside of a special glass tube
containing mercury with an alternating current
so that the mercury/glass surface fluoresces
(glows with visible light). A flourescent light
uses about a quarter of the energy used by an
incandescent lamp to produce the same amount
(measured in "lumens") of visible
light. However, one criticism of flourescents
is that the spectrum is much stronger in the
blue and ultraviolet than in the red. The
operating frequency of the ballast driving the
fluorescent tube is 10,000 to 20,000 cycles per
second, and this can bother some people with
static and resonant humming.
Fluorescents have been
popular in RVs, but their advantage is more
limited than most people realize. An RV
fluorescent fixture is typically only twice as
efficient as an incandescent fixture, and its
comparative cost is significant.
The inefficiency of
incandescent and fluorescent bulbs and their
propensity to produce significant heat make the
LED lamp a viable alternative. Note,
incandescents are called "bulbs"
because the light producing mechanism must be
encased in a glass bulb to hold a vacuum (or
special gas) and to protect the filament.
Halogen and fluorescent bulbs contain a gas
used in the lighting process. LED lights are
called "lamps," the more generic name
for a lighting device.
Excessive heat is a
significant safety factor in RVs. The most
common source of fires in RVs is the lighting
fixtures in the ceiling and on the sides of
RVs, especially as the wiring and bulbs age and
the surrounding inflammable material dries out.
Incandescent CAN and DO cause fires in
RVs.
Typically, over 85% of the
energy of the electrical current flowing
through an LED lamp is converted into visible
light. Very little of the energy is used to
create heat. However, if a resistor must be
used in series with the LEDs to reduce the DC
voltage to match that required by the LED, the
voltage drop across the resistor will create
heat that must be dissipated.
LEDs are safer in an RV
because they run cooler. This provides an added
advantage on a hot night when camping. LED
lamps attract far fewer bugs at night; bugs are
looking for warmth, not light.
Power savings is especially
important to someone who is "living off
the grid" or "boondocking," that
is, living in an RV or boat without being
attached to the 120 volt AC lines from the
electric utility. Without such
"shore" power, the electricity must
come from a battery bank, and those batteries
must be recharged with solar, wind, or
generator systems.
Finally, LEDs last 100 times
longer than incandescent bulbs and at least 10
times longer than halogen and fluorescent
bulbs. Edison's original bulbs had a
lifetime of a few minutes before they burned
out. This has grown to several hundred or even
thousands of hours. But LEDs have an average
lifetime of 100,000 hours. Over time,
replacement costs add up and far exceed the
initial cost of an LED lamp.
To repeat, the four primary
reasons for using LEDs in an RV are
Safer
- hot incandescent and
fluorescent lights cause fires in RVs - LEDs
do not get hot enough to start a fire or
blister your fingers
Cooler
- LED lamps run at a maximum
of 165 degrees F - 200 to 800 degrees cooler
than incandescent and halogen
bulbs
Power
Savings - an LED
lamp uses 15% of the electrical power
required by an incandescent or halogen bulb
for the same luminosity
Longer
Lasting - the
expected life of an LED is 11 years; normal
incandescents last up to 1,000 hours - 1% of
the life of an LED.
And now with
LightBlasters Lumeon LED lamps,
you have a lighting solution for your RV that
fulfills the potential for LEDs.
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