close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2105419

код для вставки
Jan. 11, 1938.
w_ HONlNG
I
2,105,419
VEHICLE HEAD LAMP
Filed NOV. 20, 1934
f
H
.a/
H
‘36 '
W
M
[ZVT/"ENTUR
I/YiL HE'LM HUNINE'
H “w
Him?
649W
'2' TURNS‘?
3 Jan. ll, 13%
T?
2,105,419
”
FEW
7
vnmcan HEAD
, Wilhelm Honing, Eindhoven, Netherlands, as
signor to General Electric Company, a corpora
tion of New York
Application November 20, 1934, Serial No. 753,8“!3
In Germany December 22, 1933
4 Claims. (Cl. 1'36-26)
My invention relates to vehicle headlamps and the ?laments l2, [3 have separate circuit con
more particularly to an incandescent electric nections and may be independently energized.
lamp for use therein having a novel ?lament ar
rangement for producing a desired ligh't distribu
5
tion.
‘
v One of the objects of my invention is to provide
a ?lament arrangement in a headlamp whereby
a driving beam is produced having a “hot spot”
of light of high intensity and of uniform shape
10 and comparatively large depth, while the beam
for use when approaching an oncoming vehicle
is of comparatively wide lateral spread.
,
According to my invention the above object is
_ attained by employing a pair of ?laments in the
- The lamp is preferably mounted in the usual
paraboloidal re?ector of a headlamp so that the
?lament l2 extends through the focal point of 5
the re?ector in a vertical plane, and the ?lament
I3 is in a horizontal plane. This ?lament ar
rangement in a headlamp employing a standard
form of lens having vertical ?utes across the
middle and horizontal prisms at the top and bot- 10
tom provides, with the vertical ?lament It’, a
driving bea'm having a cross section in a vertical
plane substantially as shown at 20 in Fig. 3.
The said beam has a hot spot 2! of high in
1" lamp arranged in substantially the shape of a T tensity and relatively large depth at the middle 15
with the ?lament constituting the vertical leg of the beam, thereby providing a maximum of
of the T arranged in a vertical plane which pref
light straight down the roadway where it is
erably passes through the focal point of the re
most desirable. The horizontal ?lament l3 pro
?ector. The said vertical ?lament is used to vides a beam having a cross-section in a ver
20 produce the “driving” beam and the horizontal - tical plane substantially as shown at 22 in Fig. 4 20
?lament is used to produce the “meeting” beam. where the line H-H represents the horizontal
'
Further features and advantages of my in
plane. The said beam 22 has a very desirable
vention will appear from the following detailed wide lateral spread and affords a good meeting
description of species thereof.
25
'
In the drawing; Fig. 1 is a perspective view of
beam.
'
-
'
What I claim as new and desire to secure by 25
an incandescent lamp with a ?lament arrange- . Letters Patent of the United’ States is:
ment according to my invention; Fig. 2 is'a front
view thereof; Fig. 3 is a diagrammatic showing
of a section of a driving beam produced by the
30 lamp; and Fig. 4 is a similar showing of a meet
ing beam.
Referring to Figs. 1 and 2, the lamp comprises
a base l0 and a bulb ll having a pair of ?la
ments I 2, I3 sealed therein. The said ?laments
35 l2, l3 are in the form of helical coils having
1. An electric incandescent lamp for vehicle
headlamps comprising a bulb containing a pair
of ?laments with separate circuit connections,
said ?laments being straight linear ?laments 30
and being arranged substantially in the form of
a T located in a plane perpendicular to the lon
gitudinal axis of the lamp.
_
2. An electric incandescent lamp for vehicle
headlamps comprising a bulb containing a pair of 35
linear or straight-line axes, the ?lament ll be
?laments with separate circuit connections, said
ing'preferably located in a plane passing through ?laments
being straight linear ?laments and be
the longitudinal axis of the lamp with said ?la
ing arranged substantially in the form of a T
ment disposed perpendicular to said axis, while located in a plane perpendicular to the longitui‘
40 the ?lament [3 extends transversely of said axis dinal axis of the lamp, the vertical leg of. said T 40
and at right angles to ?lament II. In other being located substantially in a plane extending
words, the said ?laments l2, I3 are arranged in through the said longitudinal axis of the lamp.
substantially the shape of a T located in a plane
3. An electric incandescent lamp for vehicle
extending transversely of, or perpendicular to, headlamps
comprising a bulb adapted to be
45 the lamp axis. Where standard bayonet pins I4, mounted with its axis horizontal, a stem extend- 4.’;
III are employed, they may be located on the ing into said bulb axially thereof, three lead wires
base It! in the same plane as the ?lament l2. extending through said stem and projecting for
The ?lament i2 is secured at one end tora lead wardly thereof one above the other, the middle
wire vl5 and at its opposite end to a common lead lead wire'having a laterally extending portion lo
A 50 wire 16.
The?lament I3 is secured at one end
to the common lead wire IS and at its opposite
end to a lead wire 11. Portions of said leads l5,
l6, I‘! are sealed in the ‘press portion l8 of a
stem tube l9, the said‘ leads extending to respec
55 tive terminals or contacts in the base “I so that
cated directly above the end of the lower lead 50
wire and a short end portion extending vertically
upward and located on the opposite side of the
bulb axis from the end of the upper lead wire,
the ends of said lead wires and the laterally ex
tending portion of said middle lead wire being 55
2,105,410
located in a plane perpendicular to the bulb axis.
. a ?lament connected at one end to the end of
said lower lead wire and extending vertically
upward and being connected at its other end'to
the said laterally extending portion of said mid
die wire, and a second horizontally disposed ?la
' 'ment connected at each end to an end of said
middle an upper lead wires and forming with said
middle and upper lead wires - being offset one
on each side of the bulb axis and‘each being bent
toward the opposite side of said axis, the lateral
ly extending portion of said middlelead wire be
ing directly above the end of the lower lead wire,
a ?lament connected at one end to the end of
said lower lead wire and extending vertically
upward and being connected at ‘its other end to
?rst-mentioned ?lament a T located in a plane the said laterally extending portion of said middle
' lead wire, and a second horizontally disposed 10
10 perpendicular to the bulb axis, and-circuit con
' nections for energizing said ?laments separately. ?lament connected at each end to an end of said
, 4. An electric incandescent lamp for vehicle middle and upper lead wires and forming with
headlamps comprising a bulb adapted to be said ?rst-mentioned ?lament a T located in a
plane perpendicular to the bulb axis, and circuit
mounted with its axis horizontal, a stem extend
‘ into said bulb axially thereof, three lead ‘connections for energizing said ?laments sep 15
in:
15
arately.
.
wires extending through said stem and project- '
ing forwardly thereof one above the other, the
WlLHEL-M HONING.
Документ
Категория
Без категории
Просмотров
0
Размер файла
223 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа