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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. |