U.S. patent number 3,714,414 [Application Number 05/114,024] was granted by the patent office on 1973-01-30 for ornamental lighting means.
This patent grant is currently assigned to Kommandilbolaget T. Sternius Akhegvlag & Co.. Invention is credited to Alf Tommy Sternius.
United States Patent |
3,714,414 |
Sternius |
January 30, 1973 |
ORNAMENTAL LIGHTING MEANS
Abstract
An ornamental lighting structure comprises an elongated
transparent plastic tube having a plurality of lamps disposed in
spaced relation to one another in the direction of elongation of
said tube, and electrically interconnected to one another, and to
an electrical plug disposed at one end of the tube, in a series
circuit. The tube is hermetically sealed about the lamps, and is
constricted at spaced locations along the direction of elongation
of the tube, at positions between the spaced lamps respectively, to
enhance the ornamental effect of the lighting structure.
Inventors: |
Sternius; Alf Tommy (Lidingo,
SW) |
Assignee: |
Kommandilbolaget T. Sternius
Akhegvlag & Co. (Stockholm, SW)
|
Family
ID: |
22352945 |
Appl.
No.: |
05/114,024 |
Filed: |
February 9, 1971 |
Current U.S.
Class: |
362/249.01;
362/267; 362/806 |
Current CPC
Class: |
F21S
4/22 (20160101); F21S 4/28 (20160101); Y10S
362/806 (20130101) |
Current International
Class: |
F21S
4/00 (20060101); F21p 001/02 (); F21s 003/00 () |
Field of
Search: |
;240/1R,1S
;313/1,312,324 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Swisher; S. Clement
Assistant Examiner: Shoon; Frederick
Claims
What I claim is:
1. An ornamental lighting structure comprising an elongated,
flexible, transparent plastic tube, a plurality of lamps disposed
in spaced relation to one another within said tube in a row
extending along the direction of elongation of said tube, each of
said lamps being of the base-less type and having a pair of
terminal wires projecting therefrom, connector means within said
tube connecting one terminal wire projecting from each lamp to a
terminal wire projecting from a next adjacent lamp in said row
thereby to connect said lamps electrically to one another in a
series circuit, a two-terminal electric plug positioned adjacent
one end of said elongated plastic tube, said connector means
including means for connecting one terminal wire projecting from
each of the first and last lamps in said row, respectively, to the
two terminals of said plug, said plastic tubing being hermetically
sealed to completely encase said lamps and connector means, and
said tubing being constricted at spaced locations between said
spaced lamp along its direction of elongation, to exhibit a
diameter which is smaller, between each adjacent pair of said
lamps, than the diameter of said tube around each of said
lamps.
2. The structure of claim 1 wherein said connector means includes
an elongated return conductor extending through said tube in the
direction of elongation of said tube, one end of said return
conductor being connected to one of said plug terminals at one end
of said tube, and the other end of said return conductor being
connected to a terminal wire of the lamp positioned farthest away
from said plug at the other end of said tube.
3. The structure of claim 2 wherein each of said lamps is a glow
lamp.
4. The structure of claim 3 wherein said connector means include a
plurality of solder joints permanently connecting said terminal
wires to one another in said series circuit.
Description
BACKGROUND OF THE INVENTION
This invention relates to an ornamental lighting means comprising a
plurality of lamps connected in series and adapted for connection
to a voltage main. In ornamental lighting means of this kind,
previously known, the lamps are placed in bases, and are
interconnected by wires to form a series circuit. A lighting means
of this known kind is expensive to manufacture, voluminous and, in
addition, the contacts of the lamps and their supply wires, which
constitute the main part of the arrangement, interfere disturbingly
with the ornamental effect.
An object of the present invention is to produce an ornamental
lighting means of the aforesaid kind, utilizing base-less
glow-effect lamps, which are cheap to manufacture and discardable,
i.e., the lamps are not exchangeable.
SUMMARY OF THE INVENTION
The present invention is characterized by an arrangement wherein
the lamps are placed within a plastic casing with the terminal
wires projecting from the lamps being permanently connected to form
a series circuit within the casing, which serves both as a support
for the lamps and as a contact isolation for the lamp terminal
wires.
According to an embodiment of the invention, the lamps are placed
in flexible plastic tubes, for example a shrunk plastic tube, with
the hose tube portions located between the lamps having a diameter
smaller than that of the tube portions around the lamps, and a
return conductor is preferably also provided within the plastic
tube, which return conductor has one end connected to a terminal
wire projecting from the last lamp. A lighting means of this kind
may, for example, be used as an illuminating garland on a
Christmas-tree where it gives the impression of a number of
interconnected light spots arranged in an irregular pattern.
According to another aspect of the invention, the lamps are
arranged according to a selected pattern within a rigid plastic
casing, preferably formed as two plastic halves with opposed
depressions for the lamps. The pattern arrangement, for example,
may be designed as an Advent star, candlestick or the like.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is illustrated in the accompanying drawings, in
which
FIGS. 1a, 1b and 1c show three different variants of an ornamental
lighting means according to the invention, including a casing in
the form of a flexible plastic tube, and
FIGS. 2a, 2b, 2c show an embodiment which includes a casing in the
form of a rigid plastic body.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
According to FIG. 1a, a plurality of base-less tubular miniature
lamps 1 are permanently connected to form a series circuit, in such
a manner, that terminal wires 2, 3 projecting from one end of each
of the lamps are soldered together at soldered points 4. The lamps
are arranged in a row within a flexible transparent plastic tube 5,
which preferably is hermetically sealed to prevent penetration of
moisture. The first lamp in the lamp row is connected by a
connecting wire to one contact in a plug 6, and the last lamp in
the lamp row is connected by a connecting wire to a return
conductor 7. The return conductor also extends through the plastic
tube and is connected at its other end to the second contact in
said plug 6. The lamps are provided with a built-in bridge, which
prevents the series circuit from being interrupted in the case of
defect of a lamp.
Upon connecting the plug 6 to the mains, the voltage arrangement
forms a row of light spots to be placed, for example, on a
Christmas-tree. The plastic tube serves both as a carrier for the
lamps and as contact isolation for the terminal wires projecting
from the lamps. The return conductor 7 is isolated and can possibly
be placed outside the plastic tube. It is also possible in
principle to dispense with the return conductor and to connect the
first and the last lamp in the lamp row directly to the plug.
FIG. 1b shows a variant of the arrangement in FIG. 1a employing
lamps 8 are of a type having connecting or terminal wires
projecting from each end of the lamp in question.
For increasing the ornamental effect, according to FIG. 1c the
plastic tube can be shrunk so that the portions 5' of the tube
between the lamps have a diameter smaller than the portions
enclosing the lamps.
FIG. 2 shows another embodiment of the ornamental lighting means
according to the invention, in which FIGS. 2a and 2b show a
horizontal view and, respectively, a section through a variant of
the means, and FIG. 2c shows a section through another variant.
According to FIGS. 2a and 2b a plurality of tubular miniature lamps
1 of the type shown in FIG. 1a are arranged between two rigid
transparent plastic bodies 11, 12. The lamps are permanently
interconnected to one another by connecting wires 13, 14 to form a
series circuit, which is terminated by a plug (not shown). The
lamps are placed in depressions 15 in the firstmentioned plastic
body 11, and the opposed plastic body 12 in this embodiment is
planar.
In FIG. 2c, the lower plastic body 16 is also provided with
depressions 17, so that the lamps are located between two identical
halves.
The plastic bodies are preferably sealed hermetically to prevent
penetration of moisture.
Upon connection to the source of supply voltage the arrangement
shown in FIG. 2 forms an illuminated star, which may be used as an
Advent star or candlestick.
* * * * *