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Патент USA US2105447

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Tian. ììg, 193%.
A. l.. ARENBERQ»
LIGHTING FIXTURE
Filed July 20, 1936
3 Sheets-Sheet "J,
6.ki . dfeïzbery,
A?
j. HY, 193.
A. L. ARENBr-:RG
2,105,447
l LIGHTING FIXTURE
Filed July 20, 1935
s sheets-sheet 2
2,105,447
Patented Jan. 11, 1938
STATES PATENT ortica
Seli
2,105,447
`Lion'isnms mxrums
Albert L. Arenberg, Highland rai-k, m., assignor ,
to Patent License Corporation, Chicago, Ill., a
corporation oi' Illinois
Application July 20, 1936, Serial No.` 91,493
-11 claims. ici. 24o-7.35)
`
This invention has to do with lighting fixtures
for railway cars and other passenger vehicles,
and is particularly concerned with lighting fix
tures of the type adapted to extend continuously
Fig. 'I shows another modification; and
Fig. 8 shows still another modification.
The newiñxture is particularly well suited for
application to a streamlined railway car. In the
car structure shown in Fig. l2 of the drawings the
5 along _both sides oi the ceiling of a car above the - raised deck portion IU of the' ceiling of the car
seats.
One of the objects of the invention is to pro
vide an improved lighting fixture in which a row
is practically as wide as the car and terminates
but a short distance from the side Il. A recess
of transversely disposed Slat-like louvers is
‘_10 utilized to produce an effective distribution of
light.
.
i
.
Another object of the invention is to provide
in such a fixture an arrangement of the lamp
I2 is provided in the ceiling near the side for the
reception of the lighting ñxture, and from this 10
recess the ceiling curves upwardly to the center
of the top of the car above the aisle between the
seats.
The lighting fixture u includes a downwardlyv
opening trough which is characterized by a re 15
flector I3 and a face plate I4. The reflector is
located along one side only of the trough and is
bulbs which will furnish direct illumination for
l5 the reading areas at the seats and indirect illumi
nation for the aisle between the rows of seats,
all without any glare to vthe passengers either curved transversely through approximatelyl a
when sitting or standing and without the forma ' quarter of'a circle, with its upper Aedge attached
tion of anyy noticeable shadows.
.> to vthe ceiling where the latter starts upwardly 20
Another object is to provide a strong, light, and with its lower edge attached to a channel
compact and inexpensive fixture, which is easy
to open up for cleaning and renewal of the lamps,
and which adds materially to the appearance of
the interior of the car.
While the new ñxture will ordinarily 'be made
up so as to extend without interruption from sub
stantially one end of the car to the' other, it may
of course be constructed in shorter longitudinally
separated sections if desired. g
\
Other objects and advantages of the invention
will be apparent to those skilled in the art upon
a full understanding of the construction and ar
rangement of the parts of which the fixture is
composed.
member I5. ‘The face plate I4 is located along
the aisle side of the trough, opposite the reñector,
with the upper edge of the face plate spaced hori
zontally from the upper edge ofthe reñector so 25
as to leave an opening I6 in the top of the trough,
and with the lower edge of the face plate set
inwardly somewhat with respect to the upper
edge. The lower edge of the face plate is turned
inwardly and upwardly to form a small ledge I1, 30
and this ledge, together with the iiange ¿I8 which
extends inwardly from the face plate, forms a
channel member in opposition to the channel
member l5.
-
A preferred embodiment of the invention and
four modiiications thereof are presented herein
‘
The reflector I3 and the face plate I4 are sup
ported on transverse brackets 20 which are lo
35
cated at regular intervals longitudinally of the
for the purpose of exemplification, but it will. of "'
fixture.
course be appreciated that the invention is capa
ble of being incorporated in still other structural
ly modified forms coming equally within the
spirit of the invention and the scope of the ap
pended claims.
l
In the accompanying drawings:
, the inside of the face plate, the reiiector and
»
‘ Fig. 1 is a perspective view of one end of thek
new fixture;
These brackets follow the contour of
the reflector from the channel member I5 to' the
upper edge of the reñector and then dip down 40
wardly and extend across to the face plate I4;
over the top of the iiange I8 and upwardly against
'
Fig. 2 is a vertical transverse section through
the fixture, taken on the line 2-2 of Fig. 3;
Fig. 3 is a plan view of a portion of the ñxture,
looking upwardly at the under side of the same;
Fig._4 is _a perspective view of one of the remov
face plate being secured to the brackets at suit
' able points by means of screws.
between the brackets 20. The bulbs project into
the trough through openings 22 in the rei-lector
I3 and are mounted in sockets 23 which are sup
ported in adapters 24 secured to the back of the -
reñector. The wiring 25 for the sockets is lo
'
in the recess I2 behind the reñector.
Fig. 5 is a fragmentary section through one ' cated
The lower open~face of the trough is spanned
side of‘ a modiñed „form of the fixture;
by a large number` of closely _arranged louver
ablelouver sections;
Fig. 6 is a similar section, showing another4 j strips 26 which are disposed in planes at right
Á55
modified form;
v
_
4
45
Lamp bulbs 2I are positioned in the trough
2
’ angles to the axis of the trough.
amasar
These louver
diately adjacent the fixture. The reflector I 3 of
strips are removable except for single louver »course serves to direct the light rays from the
strips 2l which are located directly below the bulbs both downwardly and outwardly at an an
brackets
The single strips 2l are stationary gle, whereby to yprovide a rather wide distribu
and the ends of the same are secured in the tion of the direct lighting from the side of the 5
channel members I5 and I9. The removable car right up to the usual location of the center
strips 25 between ‘the stationary strips `are aisle.
'
grouped into rigid grid-like sections Ztl, with the
In the modification which is shown in Fig. 5
ends of the strips in eaohof the sections at
a small longitudinally extending baille plate 34
10 tached to longitudinally extending bars 29 >and
is positioned below the face plate I4 in spaced
‘39. >All of the strips preferably have their ends relation to the lower edge of the latter. This
at the face plate ilared, so that the ends of the baiile plate is curved transversely and its concave
slots between the strips are rounded. This not 4 upper surface 35 acts as a reflector for indi
only enhances the appearance of the ñxture as rectly illuminating the ornamented outer surface
a whole but greatly facilitates cleaning.
The louver sections 28 ñt snugly between the
single separating louver strips 2l, and all of the
strips lare so uniformly spaced and matched as
20
„ to make the strips in the removable sections
practically indistinguishable from the stationary
strips on casual inspection. The connecting bars
29 and 3d for the strips in the removable sections
ñt respectively into the channel members I5 and
I9 and arel held down against the lower flanges
25 of the channel members by means of leaf springs
3| on the upper edges ofthe bars, which springs
of the face plate and the ceiling from the lamp
bulbs in bach. of the face plate.
In the modiñcation which is shown in Fig. 6
the face plate dâ is somewhat diñerent in con,
struction and vfunction.
It is not spaced from v
the reflector 3l at its upper edgebut is arranged
in a vertical position and is provided in its upper
portionl with a panel Sâ of translucent material,
through which panel the ceiling of the car is
softly illuminated.
Inthis particular ñxture
the reflector 3l curves downwardly> at 39 on the
aisle side of the lamp bulbs 4I), whereby to rather
strongly
illuminate the upper portion ofthe side
members.
i
of 'the_car.‘ This feature is especially advanta-l
To remove any of the louver sections from geous if the llighting fixture' is used in a street
30
the trough, it is merely necessary to raise one car Where advertising matter is ordinarily dis
side of thev section far-enough against the yield
played at the side of the car close to the ceiling.
ing ‘resistance'of the springs at that side to allow In this vmodification the louver sections, instead’
a groove 32 in the bar 29 to clear the edge of of being bodily removable, are hinged at 4I to
`vthe lower flange of the channel member I5, one edge of the trough and the opposite sides
whereupon the vraised edge of the section can be of the sections are removably held in position
bear against the upper flanges of -the channel
. shifted far enough into the channel member to by set screws 42 or by any other suitable means.
' allow the .opposite edge of the section to clear
In the modification which is shown in Fig. 'l
. the channel member.l I9. Assoon as this has , the face plate 43 extends upto the side of the
'
been done the louver sectionv can be slipped out
without any diñlculty. vTo replace the section,
this procedure is of course reversed. The posi
tion ofthe section when being removed or re
ceiling-44,. without any spacing therebetween andwithout .the addition of any glass panel;
The
outerl surface of the panel 43 is indirectly illumi
nated by means of a baiile plate 45 which is `spaced
from the faceplate and forms a shield over open
e ends o'f-the louver strips nearest the side- ings 46 inthe face plate. Through these open
,
fthe cai:` are preferably reduced in vertical ings light rays fromthe bulbs behind the face
extent-by having theirflower edges curved up plate reiiectagainst the rear surface of the baille
placed'is shown in' dotted lines in Fig. 2.
wardly at '33,’ whereby to prevent the formation l plate 45 and‘illuminate the upper and lower por
. of any noticeable shadows on the side of the car. tions of.-the frontv surface of the face plate.
The-arrangement of the reiiector I 3, face plate `
I4, opening I 6 and louver strips 26 with respect
tothe lamp bulbs 2| is such as to produce an ef
fective distribution of light. The seats along the
In'the-modiflcation which is shown in Fig. 8
the louver construction is diiîerent. All of the 5o
louvers are sheet metal stampings 41 which are
secured together in spaced relation on tie rods
side of the car beneath the lighting fixture and I 48 and 49.' The louvers with> their tie rods are l
‘
55
the .reading areas about the seats receive direct
illumination from .the bulbs through the louver
’ v4strips,=wl1ich strips prevent any glare from the`
bulbs by shielding the~ llatter from sight inthe
¿normal range oi'v` vision of a person looking length
'I'he face plate I4 similarly pre
also .Wise'i-ofí-the
vents any-_glare from the bulbs in the eyes- of a
person seated across the aisle or walking through
TheV bulbs project toward the face
plate just far enough to illuminate the ceiling
' the aisle.'
' ofthe car through the gap I6, whichl results in
indirect illumination of the aisle. .The narrowed
end portions 33 of the louver strips permit direct
' l' illumination ofthe side oi’ the car without allow
i ing. the louver strips to cast any noticeable shad
_ows thereon, but if such illumination is not de
70 slred these end portions- of the strips can of
course be easily blanked oiï by meansV of a longi
¢ tudinally extending baille strip of any suitable
" description. 'I'he upper portion of the inner sur
75
face oi' the face plate I4 serves as a reilector for
increasing the >illtlminationlof the ceiling imme--
grouped _into longitudinally abutting units, and
each of the units is held u_p in position against 5»
the'bottom of the light'trough 5I! by means of
vhanger bolts 5I which screw into cross members
52. AThe ends of the louvers at the aisle side of
the ñxture are capped by a sheet metal face
plate 53; which plate hooks over the ends of the
louvers in a groove 54 formed in the latter and is
held in position by tongues 55 which extend in
wardly at intervals to the tie rod 48. The upper
edge of the face plate B3 is. preferably spaced
from the adjacent portion 56 of the ceiling,
whereby to permit light rays from the lamp-bulbs
to be reflected against the inside surface of the
face plate 'onto the ceiling.
'
> '
I claim:~
1. In a car lighting ilxture, a longitudinally 70
extending trough characterized by a transverse
ly curved downwardly directed reflector and a
vertically disposed face plate -in the form of a
translucent panel along one side of the reflector,
lamp bulbs in the trough. and closely spaced 75
2,105,447'
louver strips which extend across the open face
=
3
\
erally directed renector and a face plate which
.of the trough from the face plate in planes at is spaced from the edge oi.' the reiiector to pro
» vide a gap therebetween, lamp bulbs in the
right angles to the axis' of the trough.
2. In a lighting iixture, a trough characterized trough, horizontally disposed light-transmitting
by a transversely curved reflector and a face panels _ arranged across the -open face of the
plate along one side of the reñecton‘lamp bulbs trough between the lower edge of the iace plate
in the trough, and closely spaced louver strips and the lower edge of the reilector, and a baille
` which extend across the open face of the trough '
from the face plate in planes at right angles to
10 the. axis of the trough, said louver strips being
detachably secured to the trough in groups loi
several which are removable as units, and said
plate associated with the face plate for permit
ting indirect illumination oi the latter from the
bulbs, said baille plate being positioned beneath 10
the tace plate in spaced relation to theV lower
edge ci the latter.
removable units being separated from each other
by single ñxed louver strips which form trans
15 verse reinforcements for the trough.
3. In a lighting iìxture, a trough characterized
by a transversely curved reflector and a face
plate along one side of the reflector, transverse
_brackets for supporting the face plate relative
to the reñector, lamp bulbs mounted in the trough
between the brackets, single transverse louver
strips which extend across the trough beneath
the brackets, ledges at the edges of the trough,
and rectangular grids composed of closely ar
25 ranged transverse lover strips removably mount
8. `In a lighting fixture, a trough for applica
tion to the ceiling of a railway car or other pas
senger vehicle at one side oi the center aisle 15
above the seats at that side,- said trough _being
characterized by a transversely curved down
wardly directed reflector and a face plate in the
form of a translucent panel along one side of the
reflector,- lamp bulbs in the trough, and closely 20
spaced louver strips which extend across the open
face of the trough at right angles to the axis of
the trough, the position oi the bulbs with re
spect tothe lower side edges of the face place 25
and reflector being such as to give unsymmetri
ed on the ledges in the spaces present between lcal light distribution with a sharp cut-of! an
gle on the side toward the aisle to prevent glare
the single louver strips.
in
passengers’ eyes across the aisle and with a
4. In a lighting ñxture, a trough characterized
by a reñector, lamp bulbs in the trough, grooves wider cut-ofi angle on the side toward the wall 30
30 along the sides of the trough, and closely spaced to illuminate the wall and any advertising
4 '
louver strips which extend across the open face matter thereon.
v 9..In a lighting ilxture, a trough for applica
of the trough in planes at right angles to the
to the ceiling of a railway car or other pas
axis of the latter, said louver stripsbeing formed tion
into units, which units are removably'mounted senger vehicle at one side of the center aisle 35
above then seats at that side, said trough being
in the grooves.
`
~ l
characterized by a transversely curved down
5. In a lighting nxture, a trough for applica
wardly directed reflector, lamp bulbs in the
tion to the ceiling of a railway car or other pas
trough, and lclosely spaced louver strips which
senger vehicle at one side of the center aisle. close `
to the side wall above the seats at that side, said extend across the open face ofe the trough at 40
right angles to the axis of the trough, the posi
40 trough being characterized by a transversely
tion of the bulbs with respect to the side edges
curved downwardly and laterally directed re
flector and a face plate along the aisle side of the of the trough being such as to. give unsymnietri
light distribution with a sharp cut-on angle
reilector, lamp bulbs in the trough, and closely . cal
spaced louver strips which extend across the on the side toward the aisle to prevent glare in 45
passengers’ eyes across the aisle àndwith a wider
45 open face of the trough from the face plate in
. planes at right angles to the axis of the trough,
said face plate beingspaced from the adjacentv
cut-oi! angle on the side toward the> wall to
illuminate the wall and any advertising mat
edge of the reñector, said louver strips being cut ‘ ter thereon, said trough being provided in the "
away along their lower Vedges near the side wall aisle side thereof with a translucent panel for 50
illuminating the ceiling above the aisle.
'
50 of the car, and said bulbs being so located as
10. In a lighting ñxture, a' trough character
to cast light rays downwardly through the lou
vers onto the seat areas, laterally through the 'ized by a reilector, lainp bulbs in the-trough,
cut-away portions oi the louvers onto the side and'closely spaced louver strips which extend '
wall, and upwardly through the gap be een the
face plate and the reflector onto the c ing above
the aisle.
6; In a lighting ñxture, a trough characterized
by. a transversely curved -downwardly and lat
erally directed reflector and a` face plate which
60 isspaced from the edge of the reñector to pro-_
vide a gap therebetween, lamp bulbs in the
trough, horizontally disposed light-transmitting
panels arranged across the open face oi the
trough betweenthe lower edge oi the face plate
and the lower edge of the reñector, and a bame
plate associated with the tace plate for permit
ting indirect illumination of the latter and th
-ceiling from the bulbs.
’1.‘In a lighting iixture, atrough characterised
by a transversely curved downwardly and lat
across the open face of the trough in planes at
right angles to the axis oi the latter, the sidesof the strips at corresponding ends thereof be
ing- flared outwardly toward each other to pro
vide rounded vends to the slots present between
the strips.
11. In a lighting fixture, a trough character
ized by a reilector, -lamp bulbs in the trough,
and closelyl spaced louver strips which extend
4across the open face of the trough in planes at -
right angles to the axis of the latter, the lower
edges of the strips at one side oi the trough being
tapered upwardly toward the upper ed‘ges4 to
eliminate formation of lshadows on any wall sur
faces adjacent said side.
ALBERT L. ARENBERG.
70
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