JPH10297847A - Lighting system for elevator car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the maintenance work of a circular fluorescent lamp by easily attaching and detaching a circular fluorescent lamp for a luminous ceiling attached to the lower face of a ceiling plate. SOLUTION: A circular fluorescent lamp 8 is attached to the lower face of a ceiling 3, and a lighting plate 6 is provided below the circular fluorescent lamp 8 to form a luminous ceiling. In addition, an intermediate diffusing body 14 is formed of a cylindrical part 15 and a plate-shaped part 16 being opposite to the circular fluorescent lamp 8 from the lower end of the cylindrical part 15, and the cylindrical part 15 is arranged at the central position of the circular fluorescent lamp 8. A locking mechanism 17 is composed in the cylindrical part 15 and a member of the ceiling 3, and the intermediate diffusing body 14 is detachably locked on the lower face of the ceiling 3. Thus, in the case of replacement of the circular fluorescent lamp 8, the intermediate diffusing body 14 can be easily removed from a member of the ceiling 3 through the locking mechanism 17 to make the maintenance work of the circular fluorescent lamp 8 easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting system for an elevator car forming a light ceiling.

[0002]

2. Description of the Related Art FIG. 9 and FIG.
FIG. 9 is a view showing a conventional elevator car lighting device disclosed in Japanese Patent Publication No. 83670, FIG. 9 is a longitudinal sectional view of the elevator car, and FIG. 10 is an enlarged view of a portion A in FIG. In the figure, 1
The car floor 2 is a wall standing from the car floor 1, 3 is a ceiling plate provided over the upper edge of the wall 2, 4 is a side plate hanging down from the ceiling plate 3, 5 is a portion below the side plate 4. Joints provided at the edges,
Reference numeral 6 denotes an illuminating plate made of a translucent plate material whose peripheral edge is supported by the joint 5 and faces the ceiling plate 3. Reference numeral 7 denotes a support fixture fixed to the lower surface of the ceiling plate 3.

[0003] Reference numeral 8 denotes a circular fluorescent lamp supported by the supporting bracket 7 and arranged near the lower surface of the ceiling plate 3, reference numeral 9 denotes a bracket, the upper end of which is fixed to the lower surface of the ceiling plate 3 and the lower end of which is formed with a support portion. It is arranged so as to surround the circular fluorescent lamp 8. 1
Reference numeral 0 denotes an intermediate light diffuser plate made of a light-transmitting plate material and the edge portion of which is disposed on the support portion of the bracket 9. Reference numeral 11 denotes a pressing piece that presses the intermediate light diffuser plate 10 by the support portion of the bracket 9. To the bracket 9.

[0004] The conventional elevator car lighting device is constructed as described above, and a light ceiling is formed by a lighting plate 6 below the ceiling plate 3. Then, below the circular fluorescent lamp 8 mounted on the lower surface of the ceiling plate 3, an intermediate light diffusing plate 10 held by a bracket 9 and a pressing piece 11 is arranged.

The light of the circular fluorescent lamp 8 is transmitted to the intermediate light diffusing plate 1.
The light diffused through 0 and diffused by the intermediate diffuser 10 passes through the illumination plate 6. As a result, the inside of the car is evenly illuminated with substantially uniform illuminance.

[0006]

In the conventional elevator car lighting device as described above, when the circular fluorescent lamp 8 is replaced, the fastening of the clamping piece 11 by the wing bolt 12 is released and the intermediate light diffusing plate 10 is removed. It is necessary to do. For this reason, there has been a problem that the maintenance work of the circular fluorescent lamp 8 is troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is an object of the present invention to provide an elevator car lighting device capable of easily maintaining a circular fluorescent lamp mounted on a lower surface of a ceiling plate. I do.

[0008]

In a lighting system for an elevator car according to the present invention, a circular fluorescent lamp mounted on a lower surface of a ceiling, and a lighting plate provided below the circular fluorescent lamp to form a light ceiling. An intermediate diffuser comprising a cylindrical portion and a plate-shaped portion formed to protrude from the lower end portion of the cylindrical portion and facing the circular fluorescent lamp, the cylindrical portion being disposed at the center of the circular fluorescent lamp, and an intermediate diffuser and a ceiling. A locking mechanism that is configured as a member and that detachably locks the intermediate diffuser to the lower surface of the ceiling.

In the lighting device for an elevator car according to the present invention, the locking mechanism is formed on the other side of the support fitting having one side fixed to the ceiling and forming a part of the ceiling member, and is provided below the lower surface of the ceiling. Are formed in the cylindrical portion of the intermediate diffuser and the locking portion which is bent and horizontally arranged, and has one side opened at the upper end surface of the cylindrical portion and extended downward to form a locking groove bent in the horizontal direction.

Further, in the elevator car lighting device according to the present invention, the support fittings, in which the locking portions are arranged to face each other with respect to the circular center of the circular fluorescent lamp, are mutually connected at the center side of the circular fluorescent lamp. It is configured in the place connected to.

Further, in the elevator car lighting device according to the present invention, the locking mechanism may be configured such that one side is fixed to the ceiling and the intermediate part of the support bracket forming a part of the ceiling member faces the cylindrical part of the intermediate diffuser. It is formed by a locking portion that is projected and then bent and has a lower end inclined in a direction away from the cylindrical portion and a locking hole provided in the cylindrical portion of the intermediate diffuser and corresponding to the locking portion.

Further, in the elevator car lighting device according to the present invention, the supporting members, in which the locking portions are arranged to face each other with respect to the circular center of the circular fluorescent lamp, are mutually opposed on the center side of the circular fluorescent lamp. The support bracket is formed in a shape in which the middle part of the hanging portion of the support bracket near the center of the circular fluorescent lamp protrudes to the opposite center side of the circular fluorescent lamp, is bent, and the lower end is inclined toward the center of the circular fluorescent lamp. You.

Further, in the elevator car lighting device according to the present invention, the locking mechanism is provided at a bottom of the circular fluorescent lamp holding portion of the support fitting having one side fixed to the ceiling and forming a part of the ceiling member. The upper end of the protruding portion provided on the plate portion of the intermediate diffuser is bent in a direction along the surface of the plate portion of the intermediate diffuser, and is formed by a locking claw corresponding to the lock portion. You.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 and 2 are views showing an example of an embodiment of the present invention. FIG. 1 is a diagram corresponding to FIG. 10 described above, and FIG. 2 is a perspective view of the intermediate diffuser of FIG. 1 and 2
Otherwise, the elevator car is configured in the same manner as in FIG. 9 described above. In the drawing, reference numeral 8 denotes a circular fluorescent lamp supported by the support fitting 7 and arranged near the lower surface of the ceiling plate 3, and reference numeral 13 denotes a locking portion. It is configured to be bent in the horizontal direction.

Reference numeral 14 denotes an intermediate light diffuser, which is formed of a cylindrical portion 15 made of a translucent material and a plate-like portion 16 protruding from the lower end of the cylindrical portion 15 and facing the circular fluorescent lamp 8, and having a cylindrical portion. Reference numeral 15 is disposed at the center of the circular fluorescent lamp 8. Reference numeral 17 denotes a locking mechanism for detachably locking the cylindrical portion 15 of the intermediate diffuser 14 to the support fitting 7 forming a part of the ceiling member. The locking mechanism 17 is provided on the locking portion 13 of the support fitting 7 and the upper end of the cylindrical portion 15. The locking groove 18 is formed on the upper end surface, extends downward, and is bent in the direction along the surface of the plate-shaped portion 16.

In the lighting device for an elevator car configured as described above, a light ceiling by the lighting plate 6 is formed below the ceiling plate 3. Further, the locking portion 13 is provided on the lower surface of the ceiling plate 3 and forms a part of the ceiling plate member. The locking portion 13 of the support fitting 7 and the locking groove 18 provided in the cylindrical portion 15 of the intermediate diffuser 14. A mechanism 17 is provided.

The cylindrical portion 15 of the intermediate diffuser 14 disposed at the center of the circular fluorescent lamp 8 is detachably locked by a locking mechanism 17. As a result, the intermediate light diffuser 14 is arranged below the circular fluorescent lamp 8 attached to the lower surface of the ceiling plate 3 with the plate-shaped portion 16 facing the circular fluorescent lamp 8.

The light of the circular fluorescent lamp 8 is transmitted to the intermediate diffuser 1.
4 and diffused by the intermediate diffuser 14 pass through the illumination plate 6. Thereby, the inside of the car is evenly illuminated with almost uniform illuminance.

In such a configuration, when the circular fluorescent lamp 8 is replaced, the intermediate diffuser 14 is rotated in the horizontal direction so that the locking portion 13 of the support metal fitting 7 becomes the cylindrical portion 1 of the locking groove 18.
(5) The intermediate diffuser 14 is extracted downward in a state where the intermediate diffuser 14 coincides with the position corresponding to the opening on the upper end surface. Thus, the intermediate diffuser 14 can be easily removed without using a tool or the like. Therefore, the circular fluorescent lamp 8 can be maintained by a simple operation without requiring a complicated operation.

Embodiment 2 FIG. 3 is a diagram showing an example of another embodiment of the present invention, and is a diagram corresponding to FIG. 1 described above.
Except for FIG. 3, an elevator car lighting device is configured similarly to the above-described embodiment of FIGS. 1 and 2. In the figure, the same reference numerals in FIGS.
Is a locking portion, which is formed at a position where the support fittings 7 arranged opposite to each other with respect to the circular center of the circular fluorescent lamp 8 are connected to each other.

Reference numeral 17 denotes a locking mechanism for detachably locking the cylindrical portion 15 of the intermediate diffuser 14 to the support fitting 7 forming a part of the ceiling member, and a locking portion 19 by the support fitting 7 and the upper end of the cylindrical portion 15. It is formed by a locking groove 18 which is opened at the upper end surface, extends downward and is bent in a direction along the surface of the plate-like portion 16.

In the elevator car lighting device configured as described above, when the circular fluorescent lamp 8 is replaced,
By rotating the intermediate diffuser 14 in the horizontal direction, the engagement between the locking portion 19 of the support fitting 7 and the locking groove 18 of the intermediate diffuser 14 can be easily released. Therefore, although detailed description is omitted, the same operation as the embodiment of FIGS. 1 and 2 can be obtained in the embodiment of FIG.

Embodiment 3 FIG. FIGS. 4 and 5 also show an example of another embodiment of the present invention. FIG.
FIG. 5 is a perspective view of the intermediate diffuser of FIG. Except for FIG. 4 and FIG. 5, an elevator car lighting device is configured similarly to the above-described embodiment of FIG. 1 and FIG. In the figures, the same reference numerals in FIGS. 1 and 2 denote corresponding parts, and reference numeral 20 denotes a locking portion. An intermediate portion of the support fitting 7 projects to the opposite center side of the circular fluorescent lamp 8 and is bent, and the lower end side is circular fluorescent lamp 8 Is formed in a shape inclined toward the center side.

Reference numeral 17 denotes a locking mechanism for detachably locking the cylindrical portion 15 of the intermediate diffuser 14 to the support fitting 7 forming a part of the ceiling member. The locking mechanism 20 and the cylindrical portion provided on the support fitting 7 are provided. 15 and is formed by a locking hole 21 into which the locking portion 20 is fitted.

In the lighting device of the elevator car constructed as described above, when the intermediate diffuser 14 is mounted, the cylindrical portion 15 is fitted to the center side of the circular fluorescent lamp 8 of the supporting metal member 7 facing each other. 7 is elastically deformed and inserted. When the locking portion 20 of the support 7 is fitted into the locking hole 21 of the cylindrical portion 15, the intermediate diffuser 14 is mounted on the lower surface of the ceiling plate 3, and the plate is placed below the circular fluorescent lamp 8. The shape part 16 is arranged so as to face the circular fluorescent lamp 8.

When replacing the circular fluorescent lamp 8,
The support metal 7 is elastically deformed toward the center of the circular fluorescent lamp 8, so that the engagement between the locking portion 20 and the locking hole 21 of the cylindrical portion 15 is released. In this state, the intermediate diffuser 14 can be pulled down and easily removed. Therefore, although detailed description is omitted, the embodiment of FIGS.
The same operation as the embodiment of FIG. 2 can be obtained.

Embodiment 4 FIG. 6 also shows an example of another embodiment of the present invention, and FIG. 6 is a diagram corresponding to FIG. 4 described above. Except for FIG. 6, an elevator car lighting device is configured similarly to the above-described embodiment of FIGS. In the drawings, the same reference numerals in FIGS. 4 and 5 denote corresponding parts, and reference numeral 22 denotes a locking portion. The lower ends of the support members 7 arranged opposite to each other with respect to the circular center of the circular fluorescent lamp 8 are connected to each other. The intermediate portion of the support fitting 7 projects upward from the center of the circular fluorescent lamp 8, is then bent, and the lower end is inclined toward the center of the circular fluorescent lamp 8. Is configured.

Reference numeral 17 denotes a locking mechanism for detachably locking the cylindrical portion 15 of the intermediate diffuser 14 to the support fitting 7 forming a part of the ceiling member. The locking mechanism 22 and the cylindrical portion provided on the support fitting 7 are provided. 15 and is formed by a locking hole 21 into which a locking portion 22 is fitted.

In the elevator car lighting device constructed as described above, when the intermediate diffuser 14 is mounted, the cylindrical portion 15 is fitted to the center side of the circular fluorescent lamp 8 of the supporting bracket 7 facing each other, and the supporting bracket is mounted. 7 is elastically deformed and inserted. Then, the engaging portion 22 of the support 7 is fitted into the engaging hole 21 of the cylindrical portion 15, so that the intermediate diffuser 14 is mounted on the lower surface of the ceiling plate 3, and The shape part 16 is arranged so as to face the circular fluorescent lamp 8.

When replacing the circular fluorescent lamp 8,
The support metal 7 is elastically deformed toward the center of the circular fluorescent lamp 8, and the engagement between the locking portion 22 and the locking hole 21 of the cylindrical portion 15 is released. In this state, the intermediate diffuser 14 can be pulled down and easily removed. Therefore, although detailed description is omitted, FIGS. 1 and 2 also show the embodiment of FIG.
The same operation as that of the embodiment can be obtained.

Embodiment 5 FIGS. 7 and 8 also show an example of another embodiment of the present invention. FIG.
FIG. 8 is a perspective view of the intermediate diffuser of FIG. Except for FIG. 7 and FIG. 8, the lighting device of the elevator car is configured similarly to the embodiment of FIG. 1 and FIG. In the figures, the same reference numerals in FIGS. 1 and 2 denote corresponding parts.

Reference numeral 17 denotes a locking mechanism for detachably locking the plate-like portion 16 of the intermediate diffuser 14 to the supporting metal member 7 forming a part of the ceiling member. The projection 23 is formed by a locking claw 24 formed on the plate-shaped portion 16 of the intermediate diffuser 14 and protruding, and the upper end of the protruding portion is bent in a direction along the surface of the plate-shaped portion 16. ing.

In the elevator car lighting device configured as described above, when the intermediate diffuser 14 is mounted,
The plate-like portion 16 is arranged in parallel with the lower surface of the circular fluorescent lamp 8, and in this state, the locking claw 24 is inserted into the locking portion 23 of the support fitting 7 to rotate the intermediate diffuser 14. Thereby, the locking portion 23
The intermediate light diffuser 14 is mounted on the lower surface of the ceiling plate 3, and the plate-shaped portion 16 is arranged below the circular fluorescent lamp 8 so as to face the circular fluorescent lamp 8.

In such a configuration, when replacing the circular fluorescent lamp 8, the intermediate diffuser 14 is rotated in the horizontal direction so that the locking portions 13 of the support fitting 7 and the locking claws 24 of the plate-shaped portion 16 are rotated.
Is disengaged. As a result, the intermediate light diffuser 14 can be easily removed, and a detailed description thereof will be omitted. However, even in the embodiments of FIGS. 7 and 8, FIGS.
The same operation as that of the embodiment can be obtained.

[0035]

As described above, the present invention provides a circular fluorescent lamp mounted on the lower surface of a ceiling, an illumination plate provided below the circular fluorescent lamp to form a light ceiling, a cylindrical portion, and a cylindrical portion. An intermediate diffuser formed by projecting from the lower end of the portion and formed of a plate-shaped portion facing the circular fluorescent lamp and having a cylindrical portion disposed at the center of the circular fluorescent lamp in a circular shape; And a locking mechanism for detachably locking the diffuser to the lower surface of the ceiling.

Thus, the intermediate diffuser whose cylindrical portion is arranged at the circular center of the circular fluorescent lamp is detachably locked by the locking mechanism, and the lower side of the circular fluorescent lamp mounted on the lower surface of the ceiling plate. The intermediate diffuser is arranged with the plate-shaped portion facing the circular fluorescent lamp. Then, when replacing the circular fluorescent lamp, the intermediate diffuser can be easily removed from the ceiling member via the locking mechanism. Therefore, the intermediate diffuser can be attached and detached by a simple operation without requiring a complicated operation, and there is an effect that the maintenance operation of the circular fluorescent lamp is facilitated.

As described above, according to the present invention, the locking mechanism is formed on the other side of the support bracket having one side fixed to the ceiling and forming a part of the ceiling member, and is bent below the lower surface of the ceiling. And a locking groove formed in the cylindrical portion of the intermediate diffuser, the locking portion being formed horizontally, and having one side opened at the upper end surface of the cylindrical portion, extending downward and bent in the horizontal direction.

Thus, the cylindrical portion of the intermediate diffuser disposed at the circular center of the circular fluorescent lamp is detachably locked by the locking mechanism including the locking portion and the locking groove, and is fixed to the lower surface of the ceiling plate. An intermediate diffuser is arranged below the mounted circular fluorescent lamp with the plate-shaped portion facing the circular fluorescent lamp. Then, when replacing the circular fluorescent lamp, the engagement between the locking portion of the locking mechanism and the locking groove is released by rotating and displacing the intermediate diffuser in the horizontal direction. This makes it possible to easily remove the intermediate diffuser from the ceiling member. Therefore, the intermediate diffuser can be attached and detached by a simple operation without requiring a complicated operation, and there is an effect that the maintenance operation of the circular fluorescent lamp is facilitated.

As described above, according to the present invention, the engaging portions are connected to each other on the center side of the circular fluorescent lamp by supporting brackets arranged opposite to each other with respect to the circular center of the circular fluorescent lamp. It is configured at the location shown.

Thus, the cylindrical portion of the intermediate diffuser disposed at the center of the circular fluorescent lamp is detachably locked by the locking mechanism including the locking portion and the locking groove, and is fixed to the lower surface of the ceiling plate. An intermediate diffuser is arranged below the mounted circular fluorescent lamp with the plate-shaped portion facing the circular fluorescent lamp. Then, when replacing the circular fluorescent lamp, the engagement between the locking portion of the locking mechanism and the locking groove is released by rotating and displacing the intermediate diffuser in the horizontal direction. This makes it possible to easily remove the intermediate diffuser from the ceiling member. Therefore, the intermediate diffuser can be attached and detached by a simple operation without requiring a complicated operation, and there is an effect that the maintenance operation of the circular fluorescent lamp is facilitated.

According to the present invention, as described above, the locking mechanism is configured such that an intermediate portion of a support fitting having one side fixed to the ceiling and forming a part of the ceiling member projects toward the cylindrical portion of the intermediate diffuser. It is constituted by a locking portion which is bent and has a lower end inclined in a direction away from the circular portion and a locking hole provided in the cylindrical portion of the intermediate diffuser and corresponding to the locking portion.

Thus, the cylindrical portion of the intermediate diffuser disposed at the center of the circular fluorescent lamp is detachably locked by the locking mechanism including the locking portion and the locking hole, and is fixed to the lower surface of the ceiling plate. An intermediate diffuser is arranged below the mounted circular fluorescent lamp with the plate-shaped portion facing the circular fluorescent lamp. Then, when replacing the circular fluorescent lamp, the locking portion is bent and removed from the locking hole, and the intermediate diffuser is pulled down. This makes it possible to easily remove the intermediate diffuser from the ceiling member. Therefore, the intermediate diffuser can be attached and detached by a simple operation without requiring a complicated operation, and there is an effect that the maintenance operation of the circular fluorescent lamp is facilitated.

As described above, according to the present invention, the locking portions are formed by connecting the support brackets disposed opposite to each other with respect to the circular center of the circular fluorescent lamp on the center side of the circular fluorescent lamp. It is formed in such a manner that an intermediate portion of the support metal fitting at the center of the circular fluorescent lamp is protruded toward the opposite center side of the circular fluorescent lamp and then bent so that the lower end is inclined toward the center of the circular fluorescent lamp. .

Thus, the cylindrical portion of the intermediate diffuser disposed at the center of the circular fluorescent lamp is detachably locked by the locking mechanism including the locking portion and the locking hole, and is fixed to the lower surface of the ceiling plate. An intermediate diffuser is arranged below the mounted circular fluorescent lamp with the plate-shaped portion facing the circular fluorescent lamp. Then, when replacing the circular fluorescent lamp, the locking portion is bent and removed from the locking hole, and the intermediate diffuser is pulled down. This makes it possible to easily remove the intermediate diffuser from the ceiling member. Therefore, the intermediate diffuser can be attached and detached by a simple operation without requiring a complicated operation, and there is an effect that the maintenance operation of the circular fluorescent lamp is facilitated.

As described above, according to the present invention, the locking mechanism includes a locking mechanism provided on the bottom of the circular fluorescent lamp holding portion of the support fitting having one side fixed to the ceiling and forming a part of the ceiling member. And the upper end of the protruding portion is provided on the plate-shaped portion of the intermediate diffuser and is bent in a direction along the surface of the plate-shaped portion of the intermediate diffuser, and is constituted by a locking claw corresponding to the locking portion. .

Thus, the cylindrical portion of the intermediate diffuser is arranged at the center of the circular fluorescent lamp, and the plate-like portion of the intermediate diffuser is
An intermediate diffuser which is detachably locked by a locking mechanism including a locking portion and a locking claw, and a plate-shaped portion facing the circular fluorescent lamp below the circular fluorescent lamp mounted on the lower surface of the ceiling plate. Is arranged. Then, when replacing the circular fluorescent lamp, the engagement between the locking portion of the locking mechanism and the locking claw is released by rotating and displacing the intermediate diffuser in the horizontal direction. This makes it possible to easily remove the intermediate diffuser from the ceiling member. Therefore, the intermediate diffuser can be attached and detached by a simple operation without requiring a complicated operation, and there is an effect that the maintenance operation of the circular fluorescent lamp is facilitated.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention, and is a diagram corresponding to FIG. 10 described later.

FIG. 2 is a perspective view of the intermediate diffuser of FIG. 1;

FIG. 3 is a view showing a second embodiment of the present invention, and is a view corresponding to FIG. 1 described above.

FIG. 4 is a view showing a third embodiment of the present invention, and is a view corresponding to FIG. 1 described above.

FIG. 5 is a perspective view of the intermediate diffuser of FIG. 4;

FIG. 6 is a view showing a fourth embodiment of the present invention, and is a view corresponding to FIG. 4 described above.

FIG. 7 is a view showing a fifth embodiment of the present invention, and is a view corresponding to FIG. 1 described above.

FIG. 8 is a perspective view of the intermediate diffuser of FIG. 7;

FIG. 9 is a view showing a conventional elevator car lighting device, and is a longitudinal sectional view of the elevator car.

FIG. 10 is an enlarged view of a portion A in FIG. 9;

[Explanation of symbols]

3 ceiling, 6 lighting plate, 7 support bracket, 8 circular fluorescent lamp, 13 locking section, 14 intermediate diffuser, 15 cylindrical section, 1
6 plate-like part, 17 locking mechanism, 18 locking groove, 19 locking part, 20 locking part, 21 locking hole, 22 locking part, 2
3 locking parts, 24 locking claws.

Claims (6)

[Claims] 1. A circular fluorescent lamp mounted on a lower surface of a ceiling;
An illumination plate provided below the circular fluorescent lamp to form a light ceiling, a cylindrical portion and a plate-shaped portion formed so as to protrude from a lower end portion of the cylindrical portion and face the circular fluorescent lamp, and the cylindrical portion includes the cylindrical portion. An intermediate light diffuser disposed at the center of the circular fluorescent lamp, and a locking mechanism configured of the intermediate light diffuser and a ceiling member provided on the ceiling for detachably locking the intermediate light diffuser to the lower surface of the ceiling. A lighting device for an elevator car comprising: 2. A locking mechanism, wherein a locking mechanism is formed on the other side of a support fitting which is fixed to a ceiling and forms a part of a ceiling member, is bent below the lower surface of the ceiling, and is horizontally disposed. 2. A locking groove formed in a cylindrical portion of the portion and the intermediate diffuser, one side of which is opened at an upper end surface of the cylindrical portion, extends downward, and is bent in a horizontal direction.
Illumination device for the elevator car described. 3. The locking part is characterized in that the support brackets, which are arranged opposite to each other with respect to the circular center of the circular fluorescent lamp, are connected to each other on the center side of the circular fluorescent lamp. The lighting device of an elevator car according to claim 2, wherein 4. A locking mechanism, wherein one side is fixed to a ceiling, and an intermediate portion of a support fitting which forms a part of a ceiling member projects toward a cylindrical portion of the intermediate diffuser, and is bent so that a lower end side is separated from the cylindrical portion. 2. The elevator car according to claim 1, wherein the elevator car is constituted by an engaging portion formed to be inclined in a retreating direction and an engaging hole provided in the cylindrical portion of the intermediate diffuser and corresponding to the engaging portion. Lighting equipment. 5. A supporting member, wherein a locking portion is formed so as to be opposed to each other with respect to a circular center of the circular fluorescent lamp and is connected to each other on a center side of the circular fluorescent lamp, and wherein the supporting metal member is provided. The intermediate portion of the hanging portion near the center of the circular fluorescent lamp projects to the opposite center side of the circular fluorescent lamp, and is then bent so that the lower end side is inclined toward the center of the circular fluorescent lamp. 4. The lighting device of the elevator car according to 4. 6. A locking mechanism provided on a bottom of a circular fluorescent lamp holding portion of a support fitting having one side fixed to a ceiling and forming a part of a ceiling member, and a plate portion of an intermediate diffuser. 2. An elevator car illumination according to claim 1, wherein said projection is formed by a locking claw corresponding to said locking portion, wherein the upper end of said projection is bent in a direction along the surface of said plate-shaped portion. apparatus.