Note: Descriptions are shown in the official language in which they were submitted.
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TITLE OF THE INVENTION
Fluorescent Lamp
BACKGROUND OF THE INVBITION
The present invention relates to a fluorescent lamp which cuts down
self-absorption rate of ultraviolet ray in the central glass narrow
tube narrower than a conventional glass tube and not only raises
lu inous efficiency by restraining the ascent of an internal
temperature in the both ends of a glass drum wider than the
conventional glass tube and also improves the cooling effect in the
glass tube by delaying the speed of black conversion phenomenon.
In general, the luminous source for illu~ination devides into an
incandescent lamp system and a electrical discharge lamp system a~d the
electrical dischar8e lamp system divides into a fluorescent lamp, a
~rcurial lamp and a hlgh voltage sodium la~p, and as a lighting
equip ent for houslng, the fluorescent lamp is used.
The conventional linear type fluorescent lamp, as shown in Fig. 1 a
base(5) is adhered at the glass tube(l) both ends which the internal as
a diameter of D is e~ptied out in the full length of L2 is formed in a
pins(10) interval of L1.
The transparent glass tube(1) is coated at the inslde to make the
out-look to be fixed cylindrical type so as to form a thin film of
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fluorescent material, the base(5) of the pin(10) is set up at the both
ends, and a negative electrode(3) and a positive electrode(4) coated
with the electronic radiation material ls equipped to the double coil
type of tungsten filament.
Mercury and the gas of argon or krypton systen in a few mmHg of
pressure are put into the glass tube(l) of the fixed cylindrical type
in order to plan discharge easily.
In order to light up the conventional linear type fluorescent lamp ~ade
up in the same uanner, the relevant voltage is applied between the pins
(10) in the base of the glass tube, namely between negative electrode
(3) and positive electrode(4).
At this time, an electric current flow into the filament of
electrode(3) put in the glass tube, for beco ing~pre-heating, therefore
the thercion is emitted, and then the thermlon ls transferred to the
fila ent of positive electrode(4) by the electrlc field and the
discharge is opened. The electron(4) accurred through the discharge
strikes to tbe mercury atoc(7) of the vaporized mercury ~y the rise in
te~perature put into the glass tube(1), and as the mercury atom(7) is
excited with this, ultraviolet ray(8) is radiated to the wall side of
the glsss tube(1).
Accordingly, after the ultraviolet ray radiated to the wall
sides of the glass tube(1) which coated with the fluorescent uaterial
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(2) is absorbed to the above thin film fluorescent material(2), and
then changed into the visible light(9) and then emltted to the outside
and then the sufficient visible light(9) of the fluorescent lamp can be
obtained.
As above descrlbed, the ultraviolet ray(8) which emitted by the
excited phenomenon of the mercury atom(7) put in the glass tube(l) to
get the sufficient visible light(9) occurs the self-absorption cases in
large numbers before arriving to the thin film fluorescent material(2)
provided the radiation distance to the fluorescent material(2) coated
in the inside wall of the glass tubeis far away, therefore, the
dia eter(D) of the glass tube(1) is necessary to be narrow suffciently
small to reduce the self-absorption rate of the ultraviolet ray(8) in
the glass tube(l).
However, in order to reduce the self-absorptlon ratet if the full
length(L2) of the glass tube(1) is preserved and at the sa e ti~e, the
diaceter is narrower than the existing diameter, the fluorescent
material(2) coated in the inslde wall of the glass tube(1~ receives
thermal, the luminous intensity under the influence of the temperature
specific character of the fluorescent material(2) shows a drop in
fficiency.
On the other hand, the electron radiation material coated at the
filament of the negative electrode(3) is slowly dispersed so that
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po~iti~e ion in the glass tube(1) as a large ener~y i<i come into
collision at the filament of the negative electrode in the ~Jtl- ends of
the glass tube put at the tiue of lighting up the m~-nventional
fluorescent lamp, and the dispersed electron radiation material is
absorbed in the both side walls of the above negative electrode
filament, as a result, the black coversion phenomenon (;omes out.
If th~? lighting time is long in this state, a area of black conversion
phenomenon came out are solwly widens at the both side walls of the
glass tube.
This brings conductivity at the black conversion part of the glass tube
(13 and not only hinders in the discharge, but drops off in lumincus
efficiency at the black conversion part.
OBJECT OF THE PRESENT INVENTION.
The object of the present invention is to drop a self-absorption
rate of ultraviolet ray in the glass tube and at the same time, to
reduce the speed of the black conversion phenoaenon at the ~th ends of
the glass tube and to supress the teeperature rise of the giass narrow
tube de ~siting the central glass narrow tube at the both ends of the
glas drum which having the diameter narrower than the diaceter of
~onventional glass tube in the center of glass drum wider than a
diameter of ~onventional glass tube diameter so as to be promoted a
cooling effect and a luminous efficiency in the glass tube and then to
give the fluorescent lamp to be reduced the dispersing phenomenon speed
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of the electron radiation material coated at the ~egative electrode
filament due to a sufficient space between the side wall of the glass
dru~ and negative electrode filament.
~UMMARY OF THE INVENTION.
The fluorescent lamp according to the present invention ls
constituted of the glass drum of both ends to be for~ed a hole in the
center, the other opening part being partitioned with the side wall
one opening part as a Bl for~ being slightly bended inside with a
diameter D~ and a length Ls wider than the conventional glass tube
diameter, and a base adhered to an opening part of the glass dru~ and a
glass narrow tube coated with the thin filn fluorescent uaterial on the
wall of a dlameter D2 and a length L6 narrower than the conventional
glass tube and deposited to be inserted in the hble of the glass drum.
BRIEF DESCRIPTION OF THE DRAWINGS.
- Flg. 1 is a longitudinal sectional view of an internal structure of a
conventional linear type fluorescent lamp,
Fig. 2 is a longitudinal sectional vlew of a linear type fluorescent
lamp for an embodiment of the present invention,
Flg. 3 is a partial sectional view of a fluorescent la~p illustrated
in Fig. 2,
Fig. 4 is a perspective view of a fluorescent lamp of the present
invention, and
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Fig. 5A, 5B is a outline forming view of another fluorescent lamp of a
circular-shaped type and a u-shaped type of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The embodiment is explained in detail with reference to the
drawings.
Fig. 2 is a longitudinal view of a linear type fluorescent lamp for an
embodiment of the present invention.
The fluorescent lamp is foroed thst the d~ameter of the glass
narrow tube(19~ is narrower than the conventional glass tube diameter
as a length of L6 so as to be reduced the self-ab6orption rate of
ultraviolet ray from the central part in order to increase the
lumlnous efficiency, and due to this, the cdoling effect can be
inproved with depositing the glass narrow tube(19) at the glass drun
(11) because the large space and the wide area of tube wall which be
forned from the both ends of the diameter of glass drum(11) formed
wider than the dianeter(D1) of conventional glass tube as a length L5
so as to suppress the teeperature rise of the glass narrow tube(19).
The dispersing phenomenon speed of the electron radiation aterial
coated at the negative electrode(12) filsment can be delayed because
the sufficient space can be formed between the side wall(CI) of the
glass drum(ll) and the negative electrode~12) as shown in Fig. 3.
.,
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The dispersing phenomenon speed is Ve/P.D (Ve is the negative
electrode falling voltage, P is gas pressure, D is the distance from
negative electrode), and is inversely proportioned to the distance
between the negative electr~de(12) and the glass drum(ll) wall, so that
the distance between the negative electrode and the glass drum is
widened and the speed of the black conversion phenomenon is delayed.
The glass drum(11) shown in Fig. 3 ls a cylindrical type tube of
the diameter Dl larger than the diameter D of the glass tube shown in
Fig. 1, an opening part as a type Bl has slightly bended inside and the
base(l7) formed with a pin(18) of an interval L3 is easily inserted and
adhered.
The other opening psrt of the ~lass drum is closed with the side wall
and the hole(C3), to be inserted with the glass narrow tube(19) is
formed, and on the outskirts of the hole(C3), the projection is f~rmed
outside as a type B2 so as to deposit at the Klass narrow tube(l9)
easily.
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The part of B2 of the glass drum(11) and the glass narrow tube(19) are
heaped and the coupling part is firmly deposited.
The glass drum(11) is to be inserted and deposited in the both sides of
the gl8ss narrow tube(l9) with the dlameter D2 arrower than the diameter
of the conventional fluorescent lamp as shown in Flg. 4, and then the
fluorescent naterial of the thin fil~ is to be coated and formed in the
inner wall of the glass narrow tube(l9) and the both sides of the glass
dru~(11) as in the conventional one.
Each of the glass drum(11) becomes the deposited state in the both
sides of the glass narrow tube(19) and the base(17) is adhered -to an
opening part of the glass drum and the neKative electrode(l2) or the
posltlve electrode(13) and the exhausted tube are adhered as the
conventional fluorescent lamp. After the stem of the'electrodes(12,13~ are
wldened the wing part of the A part and are deposited with the stem wider
than the conventlonal stem as shown in Flg.3.
The inner parts of the both sides of the glass drum(11) and the
deposited glass narrow tube(19) are to be exhausted and Dercury and an
lnert gas are implanted, and the base(17) is adhered to the glass drun
(11), as a result, the fluorescent la p of the present invention is
completed.
Accordingly, the fluorescent lamp of the present invention has an
overall length of ~2 ~L2 = 2Ls+ L6 and Lz > L6 > 2 L5, the glass drum(11)
has a length of L~ ~here most of the black conversion part is in existance)
and is the same as the overall length (L2) of the conventional fluorescent
lamp and the interval between pins(18) interval of the base~17) is L3, it
is possible to be substituted the li~hting fixtures using the conventional
fluorescent lamp because L3 is same to the convention~l pins interval(LI).
And, in the implanted glass drum(11), the interval between the filament
of the negative electrode(12) and the side wall is formed wider than the
interval between the filament of the negative electrode(12) and the tube
wall of the glass tube as shown in Fig. 3 from the state constructed the
fluorescent lamp of the present invention as above descrlbed, the speed is
delayed more than the dispersing phenomenon of the electronic radiation ma-
terial generated with the filament of the conventional negative electrode.
A fluorescent lamp of the present invention has been explained with an
illustation of the linear type glass narrow tube, as shown in Fi~.5A and
5B, but the glass narrcw tube(19) which be formed as a circular-shaped tYpe
or a U - shaped tYpe maybe used after having been deposited to the
glass drum(11).
The lighting operation for the fluorescent laop of the present
invention composed as above described will be explaining as follows;
In order to light up the fluorescent lamp of the present invention, the
appropriate voltage is applied between the negative electrode(13) and the
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positive electrode(l3) among the pins(l8) in the base(l7) of the glass
tube, but the electrical pheno enon is occurred as the conventional
fluorescent lamp, and so the detail explanation of the lighting operation
for the fluorescent lamp of the preseat invention will be o itted, only the
operation occurred from the glass narrow tube(l9) and the both sides of the
glass drum(l1) will be explaining
First of all, in the electrical pheno~enon of the fluorescent lamp, a
luminous efficiency is i-proved because a self- absorption rate of
ultraviloe t ray becones narrower in the tube put with the dia eter D2 of
the glass narrow tube narrower than the dia-eter of the conventional glass
tube
However, the heat occurred from the fluorescent material coated the wall of
the glass narrow tube is conducted to the glass drun(ll) of the dia eter Dl
wider than the diameter of t~he conventional glass tube deposited on the
both sides of the glass narrow tube~19), so that a cooling effect ls
elevated in this wide surface area Besides, the gas pressure in the
glass narrow tube(19) and the glass drum(l1~ of the both sides can rise the
effect of pressure control because the interval capacity of the both sides
of the glass narrow tube(19) is largely formed
The dispersing phenomenon of radiation aaterials occurred from the
filament of the negative electrode instituted in the glass drum(11) can
delay the black conversion phenomenon occurred in the vicinity of the
filament of the negative electrode(l2) because the inner space becomes
wider and the time can be extended owing to the glass drum of the diameter
D~ wider than the diameter of the conventional glass tube. AccordinglY,
the fluorescent lamp of the present invention can reduce the life owing to
the blàck conversion in the glass drum(11) and the lowering of the luminous
efflciency in the black conversion part.
The lossing heat owing to the heat which radiated from th e negative
electrode is reduced because the distance between the filament of the
negative electrode(l2) in the glass drum(11) and the wall of the tube is
widely $ormed and the thermal efficiency of the fluorescent lamp can be
improved because the temperature rise of the glass drum(11) with the wide
diameter Dl is reduced. Accordingly, the luminous efficiency can be
increased and the speed of the black conversion phenomenon can be delayed
because the fluorescent lamp of the present invention can reduce the
self-absorptlon rate of ultraviolet ray in the center glass narrow tube and
the temperature rise of the inner part can be restrained.
In accordance with the present invention as the explanation the
fluorescent lamp to reduce the speed of the dispersing phenomenon of the
electron radiation material coated at the filament of the negative
electrode can be provided because the self-absorption rate of ultraviolet
ray can be reduced in the glass narrow tube and the speed of the black
conversion phenomenon can be reduced in the both sides of the glass drum
and the cooling effect, and the luminous efficiency in the narrow glass
tube are increased, and then the center glass narrow tube narrower than the
diameter of the conventional glass tube is deposited at the glass drum of
the both sides wider than the diameter of the conventional glass tube, and
the rising of temperature in the glass narrow tube is restrained and the
sufficient space is in existence between the side wall of the glass drum
and the negative electrode.
The present invention includes certain changes and modification without
departing from the scope of the present invention as defined by the
following claims.
