DESCRIPTION Title of Invention: ELEVATOR CAR LIGHTING DEVICE
Technical Field
[0001] This invention relates to an elevator car lighting device provided in an upper portion of an elevator car, and more particularly to a fixing structure for fixing the elevator car lighting device to the car.
Background Art
[0002] In a conventional ceiling device for an elevator car, a plurality of nuts are fixed to a ceiling plate. A light source body such as a fluorescent lamp is housed in a case that forms a suspended ceiling. The case is fixed to the ceiling plate by a plurality of bolts. The bolts are passed through the case and the ceiling plate, and attached to the nuts (see PTL 1, for example).
[0003] Further, in a conventional elevator car, a luminaire
and a lighting case that covers the luminaire are attached to a lower
surface of a ceiling plate. A pair of elongated hooking holes and
a pair of fixing holes are provided in the lighting case. Each
elongated hooking hole includes a wide portion and a narrow portion.
The wide portion is provided on a side surface of the lighting case.
The narrow portion is provided to extend from the side surface to
an upper surface of the lighting case. Each fixing hole includes
a large diameter portion and a small diameter portion.
[0004] A pair of hooking bolts that are passed through the
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elongated hooking holes and a pair of fixing bolts that are passed through the fixing holes are provided on the ceiling plate. A fastening nut is attached to a tip end portion of each hooking bolt. A fixing nut is attached to a tip end portion of each fixing bolt. [0005] To attach the lighting case to the ceiling plate, first, the lighting case is oriented vertically, and in this condition, the tip end portions of the hooking bolts and the fastening nuts are inserted respectively into the wide portions of the elongated hooking holes. The lighting case is then moved horizontally so that the hooking bolts move into the narrow portions.
[0006] Next, the lighting case is rotated as to be oriented horizontally, and in this condition, the tip end portions of the fixing bolts and the fixing nuts are inserted respectively into the large diameter portions of the fixing holes. The lighting case is then moved horizontally so that the fixing bolts move into the small diameter portions. Finally, the fixing bolts are tightened (see PTL 2, for example).
Citation List
Patent Literature
[0007] [PTL 1] Japanese Patent Application Publication No.
2003-212454
[PTL 2] Japanese Patent Application Publication No. 2011-152999
Summary of Invention
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Technical Problem
[0008] In the conventional ceiling device disclosed in PTL 1, the bolts must be tightened while supporting the case, and therefore at least two workers are required to attach the lighting device to the ceiling plate. As a result, the lighting device is not easy to install.
[0009] Further, in the conventional car disclosed in PTL 2, when the lighting case is attached to the ceiling plate, the lighting case is rotated by a large amount within the car, and therefore space for rotating the lighting case must be secured. As a result, the lighting device is not easy to install.
[0010] This invention has been designed to solve the problems described above, and an object thereof is to obtain an elevator car lighting device that can be installed in a car more easily.
Solution to Problem
[0011] An elevator car lighting device according to this invention includes a car fixing portion having a ceiling fixing portion that is fixed to a car ceiling, a luminaire supported by the car fixing portion, a ceiling side bolt that is fixed to the car ceiling, and a wall side bolt that is fixed to a lighting fixing wall forming a car wall, wherein the car fixing portion further includes a wall fixing portion that is fixed to the lighting fixing wall, the ceiling fixing portion is provided with a ceiling side bolt insertion hole through which the ceiling side bolt is passed, the wall fixing portion is provided with a wall side bolt insertion

hole through which the wall side bolt is passed, the ceiling side
bolt insertion hole includes a first large diameter portion that
allows a head portion of the ceiling side bolt to pass therethrough,
and a first small diameter portion that is connected to the first
large diameter portion and does not allow the head portion of the
ceiling side bolt to pass therethrough, the wall side bolt insertion
hole includes a second large diameter portion that allows the head
portion of the wall side bolt to pass therethrough, and a second
small diameter portion that is connected to the second large diameter
portion and does not allow the head portion of the wall side bolt
to pass therethrough, and when the head portion of the ceiling side
bolt is passed through the first large diameter portion and the car
fixing portion is moved to the lighting fixing wall side, the ceiling
side bolt moves into the first small diameter portion and the head
portion of the wall side bolt is passed through the second large
diameter portion, and when the ceiling side bolt is tightened and
the car fixing portion is moved upward, the wall side bolt moves
into the second small diameter portion.
Further, an elevator car lighting device according to this
invention includes a car fixing portion having a ceiling fixing
portion that is fixed to a car ceiling, a luminaire supported by
the car fixing portion, and a wall side bolt that is fixed to a
lighting fixing wall forming a car wall, wherein the car fixing
portion further includes a wall fixing portion that is fixed to the
lighting fixing wall, the ceiling fixing portion is provided with
a hook that is inserted into a hook insertion hole provided in the
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car ceiling, the wall fixing portion is provided with a wall side bolt insertion hole through which the wall side bolt is passed, the wall side bolt insertion hole includes a large diameter portion that allows a head portion of the wall side bolt to pass therethrough, and a small diameter portion that is connected to the large diameter portion and does not allow the head portion of the wall side bolt to pass therethrough, and when the hook is inserted into the hook insertion hole and the car fixing portion is moved to the lighting fixing wall side, the head portion of the wall side bolt is passed through the large diameter portion, and when the car fixing portion is moved downward, a tip end portion of the hook is inserted into a tip end insertion hole that is provided in the car ceiling on the lighting fixing wall side of the hook insertion hole, and the wall side bolt moves into the small diameter portion.
Advantageous Effects of Invention
[0012] With the elevator car lighting device according to this invention, the lighting device can be installed in a car more easily.
Brief Description of Drawings
[0013] Fig. 1 is a perspective view showing the interior of
an elevator car according to a first embodiment of this invention.
Fig. 2 is a sectional view showing a car lighting device of Fig. 1.
Fig. 3 is a perspective view showing a condition in which a ceiling fixing portion anda wall fixing portion of Fig. 2 are fixed

to a car.
Fig. 4 is a perspective view showing a condition before the ceiling fixing portion and wall fixing portion of Fig. 3 are fixed to the car.
Fig. 5 is a perspective view showing a condition in which head portions of ceiling side bolts have been passed through first large diameter portions of Fig. 4.
Fig. 6 is a perspective view showing a condition in which the ceiling fixing portion and wall fixing portion of Fig. 5 have been moved to a rear wall side.
Fig. 7 is a perspective view showing a condition in which the ceiling fixing portion and wall fixing portion have been moved upward by tightening the ceiling side bolts of Fig. 6.
Fig. 8 is a sectional view showing a condition in which a ceiling fixing portion and a wall fixing portion according to a second embodiment of this invention are fixed to the car.
Fig. 9 is a front view showing main parts of the wall fixing portion of Fig. 8.
Fig. 10 is a sectional view showing a condition before the ceiling fixing portion and wall fixing portion of Fig. 8 are fixed to the car.
Fig. 11 is a sectional view showing a condition in which the ceiling fixing portion and wall fixing portion of Fig. 10 have been moved to the rear wall side.
Fig. 12 is a front view showing main parts of the wall fixing portion of Fig. 11.

Fig. 13 is a sectional view showing a condition in which the ceiling fixing portion and wall fixing portion of Fig. 11 have been moved downward.
Description of Embodiments
[0014] Embodiments of this invention will be described below with reference to the drawings.
First Embodiment
Fig. 1 is a perspective view showing the interior of an elevator car according to a first embodiment of this invention. The elevator car includes a car floor 15 for carrying passengers, a plurality of car walls, and a car ceiling 18. The car walls include a pair of mutually opposing side walls 16 (only one of which is shown in Fig. 1), a pair of wing walls (not shown) provided on respective sides of a car entrance (not shown) , and a rear wall 17 that opposes the car entrance and the wing walls.
[0015] A car lighting device 21 is fixed to an upper portion of the car interior. The car lighting device 21 is configured as a separate component to the car ceiling 18.
[0016] Fig. 2 is a sectional view showing the car lighting device 21 of Fig. 1. The car lighting device 21 includes a lighting case 22 serving as a car fixing portion that is fixed to the car ceiling 18 and the rear wall 17, a luminaire 23 housed in the lighting case 22, a lighting plate 24 that is supported horizontally below the luminaire 23 by the lighting case 22, a plurality of ceiling side bolts 25 for fixing the lighting case 22 to the car ceiling

18, and a plurality of wall side bolts 26 for fixing the lighting case 22 to the rear wall 17.
[0017] The lighting case 22 is a rectangular parallelepiped-shaped box including a ceiling fixing portion 22a that is fixed to the car ceiling 18 and a wall fixing portion 22b that is fixed to the rear wall 17. In the first embodiment, the rear wall 17 serves as a lighting fixing wall to which the wall fixing portion 22b is fixed.
[0018] The luminaire 23 is attached to a lower surface of the ceiling fixing portion 22a in order to emit light into the car interior. An opening 22c is provided in a lower portion of the lighting case 22. The lighting plate 24 is disposed so as to block the opening 22c and transmit the light emitted from the luminaire 23.
[0019] Fig. 3 is a perspective view showing a condition in which the ceiling fixing portion 22a and the wall fixing portion 22b of Fig. 2 are fixed to the car. For simplicity, Fig. 3 shows only the ceiling fixing portion 22a, the wall fixing portion 22b, the car ceiling 18, and the rear wall 17. The ceiling fixing portion 22a is provided with a plurality of ceiling side bolt insertion holes 27 through which the ceiling side bolts 25 are passed. The wall fixing portion 22b is provided with a plurality of wall side bolt insertion holes 28 through which the wall side bolts 26 are passed. [0020] Each ceiling side bolt insertion hole 27 includes a first large diameter portion 27a that allows a head portion of the ceiling side bolt 25 to pass therethrough, and a first small diameter

portion 27b that is connected to the first large diameter portion
27a and does not allow the head portion of the ceiling side bolt
25 to pass therethrough. The first small diameter portion 27b is
disposed on an opposite side of the first large diameter portion
27a to the rear wall 17.
[0021] Each wall side bolt insertion hole 28 includes a second
large diameter portion 28a that allows a head portion of the wall
side bolt 26 to pass therethrough, and a second small diameter
portion 28b that is connected to the second large diameter portion
28a and does not allow the head portion of the wall side bolt 26
to pass therethrough. The second small diameter portion 28b is
disposed below the second large diameter portion 28a.
[0022] Hence, the ceiling side bolt insertion holes 27 and the
wall side bolt insertion holes 28 are so-called bell-shaped holes.
Note, however, that if necessary, extended slits may be formed
respectively between the first large diameter portion 27a and the
first small diameter portion 27b and between the second large
diameter portion 28a and the second small diameter portion 28b.
[0023] Next, a method of fixing the lighting case 22 to the
car will be described. Fig. 4 is a perspective view showing a
condition before the ceiling fixing portion 22a and the wall fixing
portion 22b of Fig. 3 are fixed to the car. Pluralities of nuts
(not shown) for receiving the ceiling side bolts 25 and the wall
side bolts 26 are fixed respectively to an upper surface of the car
ceiling 18 and an outer surface of the rear wall 17. The ceiling
side bolts 25 are passed through the car ceiling 18, attached to
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the corresponding nuts, and tightened to a certain extent in advance.
Likewise, the wall side bolts 26 are passed through the rear wall
17, attached to the corresponding nuts, and tightened to a certain
extent in advance.
[0024] As shown in Fig. 5, the lighting case 22 is lifted up
from the condition shown in Fig. 4 so that the head portions of the
ceiling side bolts 25 pass through the first large diameter portions
27a. Next, as shown in Fig. 6, the lighting case 22 is moved
horizontally to the rear wall 17 side until the wall fixing portion
22b contacts the rear wall 17. As a result, the ceiling side bolts
25 move into the first small diameter portions 27b and the head
portions of the wall side bolts 26 pass through the second large
diameter portions 28a. At this time, the lighting case 22 is
supported by the ceiling side bolts 25 in a provisionally fixed
condition.
[0025] Next, the ceiling side bolts 25 are tightened, whereby
the lighting case 22 moves upward until the ceiling fixing portion
22a contacts the car ceiling 18. As a result, as shown in Fig. 7,
the wall side bolts 26 move into the second small diameter portions
28b. Finally, as shown in Fig. 3, the lighting case 22 is fixed
to the car ceiling 18 and the rear wall 17 by tightening the wall
side bolts 26.
[0026] Hence, the bolts 25, 26 and the bolt insertion holes
27, 28 are arranged such that when the head portions of the ceiling
side bolts 25 are passed through the first large diameter portions
27a and the lighting case 22 is moved to the rear wall 17 side, the
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ceiling side bolts 25 move into the first small diameter portions
27b and the head portions of the wall side bolts 26 pass through
the second large diameter portions 28a, and when the ceiling side
bolts 25 are tightened and the lighting case 22 is moved upward from
this condition, the wall side bolts 26 move into the second small
diameter portions 28b. Further, an operation to detach the lighting
case 22 is performed by implementing opposite procedures to those
described above.
[0027] In this car lighting device 21, the lighting case 22
is hooked onto the ceiling side bolts 25 and provisionally fixed
using the ceiling side bolt insertion holes 27, whereupon the ceiling
side bolts 25 are tightened so that the lighting case 22 moves upward,
with the result that the wall side bolts 26 move into the second
small diameter portions 28b. Hence, the lighting case 22 can be
positioned easily and without the need to rotate the lighting case
22 by a large amount. Moreover, an installation operation can be
performed by one person, and as a result, the car lighting device
21 can be installed in the car more easily.
[0028] Further, the wall fixing portion 22b is fixed to the
rear wall 17 by the wall side bolts 26, and therefore horizontal
direction movement of the lighting case 22 can be prevented more
reliably.
[0029] Furthermore, the car lighting device 21 is configured
as a separate component to the car ceiling 18, and therefore lighting
specifications can be modified easily.
[0030] Second Embodiment
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Fig. 8 is a sectional view showing a condition in which the
ceiling fixing portion 22a and the wall fixing portion 22b according
to a second embodiment of this invention are fixed to the car. A
plurality of groups of hook insertion holes 18a and tip end insertion
holes 18b are provided in the car ceiling 18. Each tip end insertion
hole 18b is disposed on the rear wall 17 side of the corresponding
hook insertion hole 18a at an interval relative to the hook insertion
hole 18a. A dimension of the tip end insertion hole 18b in an
orthogonal direction to the rear wall 17 (a left-right direction
in Fig. 8) is set to be smaller than a dimension of the hook insertion
hole 18a in the same direction.
[0031] A hook 29 having an upside-down J-shaped cross-section
(in other words, a F shape) is fixed to the ceiling fixing portion
22a. Thehook29 includes a base end portion 29a that projects upward
at a right angle from an upper surface of the ceiling fixing portion
22a, a horizontal portion 29b that projects toward the rear wall
17 side at a right angle from an upper end of the base end portion
29a, and a tip end portion 29c that projects downward at a right
angle from a rear wall 17 side end portion of the horizontal portion
29b. A vertical direction dimension of the tip end portion 29c is
set to be smaller than a vertical direction dimension of the base
end portion 29a.
[0032] The hook 29 may be fixed to the ceiling fixing portion
22a by welding, a fastener, or the like, or may be formed by cutting
out and bending a part of the ceiling fixing portion 22a. The base
end portion 29a is passed through the hook insertion hole 18a. The
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tip end portion 29c is inserted into the tip end insertion hole 18b.
[0033] Similarly to the first embodiment, the wall fixing
portion 22b is fixed to the rear wall 17 by the wall side bolt 26.
A wall side bolt insertion hole 30 shown in Fig. 9 is provided in
the wall fixing portion 22b. The wall side bolt insertion hole 30
includes a large diameter portion 30a that allows the head portion
of the wall side bolt 26 to pass therethrough, and a small diameter
portion 30b that is connected to the large diameter portion 30a and
does not allow the head portion of the wall side bolt 26 to pass
therethrough.
[0034] The small diameter portion 30b is disposed above the
large diameter portion 30a (in a vertically opposite attitude to
the wall side bolt insertion hole 28 of the first embodiment) . The
wall side bolt insertion hole 30 is a so-called bell-shaped hole.
Note, however, that an extended slit may be formed between the large
diameter portion 30a and the small diameter portion 30b in accordance
with the vertical direction dimension of the hook 29. All other
configurations are identical or similar to the first embodiment.
[0035] Next, a method of fixing the lighting case 22 to the
car will be described. First, as shown in Fig. 10, the lighting
case 22 is lifted up so that the entire hook 29 is inserted into
the hook insertion hole 18a. Next, as shown in Fig. 11, the lighting
case 22 is moved horizontally toward the rear wall 17 side until
the wall fixing portion 22b contacts the rear wall 17. As a result,
as shown in Fig. 12, the head portion of the wall side bolt 26 is
passed through the large diameter portion 30a.
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[0036] Next, the lighting case 22 is moved downward. As a
result, as shown in Fig. 13, the tip end portion 29c is inserted
into the tip end insertion hole 18b. Further, as shown in Fig. 9,
the wall side bolt 26 moves into the small diameter portion 30b.
At this time, the lighting case 22 is supported by the car ceiling
18 via the hook 29 in a provisionally fixed condition. Finally,
the lighting case 22 is fixed to the car by tightening the wall side
bolt 26.
[0037] Hence, the hook 29, the hook insertion hole 18a, the
tip end insertion hole 18b, the wall side bolt 26, and the wall side
bolt insertion hole 30 are arranged such that when the hook 29 is
inserted into the hook insertion hole 18a and the lighting case 22
is moved to the rear wall 17 side, the head portion of the wall side
bolt 26 is passed through the large diameter portion 30a, and when
the lighting case 22 is moved downward from this condition, the tip
end portion 29c is inserted into the tip end insertion hole 18b and
the wall side bolt 26 moves into the small diameter portion 30b.
Further, an operation to detach the lighting case 22 is performed
by implementing opposite procedures to those described above.
[0038] Likewise with this car lighting device 21, the lighting
case 22 can be positioned easily and without the need to rotate the
lighting case 22 by a large amount. Moreover, the installation
operation can be performed by one person, and as a result, the car
lighting device 21 can be installed in the car more easily.
Furthermore, the lighting case 22 can be fixed provisionally simply
by hooking the hook 29 onto the car ceiling 18, and therefore the
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car lighting device 21 can be installed even more easily.
[0039] Further, the wall fixing portion 22b is fixed to the
rear wall 17 by the wall side bolt 26, and therefore horizontal
direction movement of the lighting case 22 can be prevented more
reliably.
[0040] Furthermore, the car lighting device 21 is configured
as a separate component to the car ceiling 18, and therefore lighting
specifications can be modified easily.
[0041] Note that in the example described above, the rear wall
17 is used as the lighting fixing wall, but another car wall may
be used as the lighting fixing wall.
Further, in the example described above, the lighting case 22 is used as the car fixing portion. However, a different member (a fixing fitting or the like) to the lighting case 22 may be fixed to the car as the car fixing portion, and the lighting case, the luminaire, and so on may be supported by this car fixing portion.
Furthermore, two or more elevator car lighting devices may be fixed to a single car.
Moreover, there are no particular limitations on the outer shape of the car lighting device.
There are also no particular limitations on the type of luminaire, and an LED, a fluorescent lamp, an incandescent lamp, and so on, for example, may be used.
There are also no particular limitations on the overall layout
of the elevator.
Furthermore, this invention may be applied to an elevator car
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lighting device for various types of elevators, such as a machin room-less elevator, a double deck elevator, and a one-shaft multi-car type elevator, for example.
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CLAIMS [Claim 1] An elevator car lighting device comprising:
a car fixing portion having a ceiling fixing portion that is fixed to a car ceiling; and
a luminaire supported by the car fixing portion,
the elevator car lighting device further comprising:
a ceiling side bolt that is fixed to the car ceiling; and
a wall side bolt that is fixed to a lighting fixing wall forming a car wall,
wherein the car fixing portion further includes a wall fixing portion that is fixed to the lighting fixing wall,
the ceiling fixing portion is provided with a ceiling side bolt insertion hole through which the ceiling side bolt is passed,
the wall fixing portion is provided with a wall side bolt insertion hole through which the wall side bolt is passed,
the ceiling side bolt insertion hole includes a first large diameter portion that allows a head portion of the ceiling side bolt to pass therethrough, and a first small diameter portion that is connected to the first large diameter portion and does not allow the head portion of the ceiling side bolt to pass therethrough,
the wall side bolt insertion hole includes a second large
diameter portion that allows the head portion of the wall side bolt
to pass therethrough, and a second small diameter portion that is
connected to the second large diameter portion and does not allow
the head portion of the wall side bolt to pass therethrough, and
when the head portion of the ceiling side bolt is passed
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through the first large diameter portion and the car fixing portion is moved to the lighting fixing wall side, the ceiling side bolt moves into the first small diameter portion and the head portion of the wall side bolt is passed through the second large diameter portion, and when the ceiling side bolt is tightened and the car fixing portion is moved upward, the wall side bolt moves into the second small diameter portion.
[Claim 2] An elevator car lighting device comprising:
a car fixing portion having a ceiling fixing portion that is fixed to a car ceiling; and
a luminaire supported by the car fixing portion,
the elevator car lighting device further comprising a wall side bolt that is fixed to a lighting fixing wall forming a car wall,
wherein the car fixing portion further includes a wall fixing portion that is fixed to the lighting fixing wall,
the ceiling fixing portion is provided with a hook that is inserted into a hook insertion hole provided in the car ceiling,
the wall fixing portion is provided with a wall side bolt insertion hole through which the wall side bolt is passed,
the wall side bolt insertion hole includes a large diameter
portion that allows a head portion of the wall side bolt to pass
therethrough, and a small diameter portion that is connected to the
large diameter portion and does not allow the head portion of the
wall side bolt to pass therethrough, and
when the hook is inserted into the hook insertion hole and
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the car fixing portion is moved to the lighting fixing wall side, the head portion of the wall side bolt is passed through the large diameter portion, and when the car fixing portion is moved downward, a tip end portion of the hook is inserted into a tip end insertion hole that is provided in the car ceiling on the lighting fixing wall side of the hook insertion hole, and the wall side bolt moves into the small diameter portion.