JPH081265Y2 - Ceiling lighting system for elevator car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a ceiling lighting device for an elevator car, and more particularly to a mounting structure of a diffuser plate thereof.

[Prior Art] FIG. 5 shows a conventional ceiling illumination device for an elevator car similar to that shown in Japanese Patent Laid-Open No. 63-66083, where (1) in the figure is the floor of the elevator car, 2) is a car room standing on the floor (1), (2a) is the ceiling of the car room (2), (2b) is an opening provided in the ceiling (2a), and (3) is a flange on the upper edge. (3a) is a dish-shaped diffuser plate made of translucent synthetic resin and provided with an opening (2b) from above the ceiling (2a).
And is supported on the ceiling (2a) by a flange (3a). (4) is an illumination box provided on the ceiling (2a) so as to surround the opening (2b), (4a) is a lid of the illumination box fastened by mounting screws (4b), and (5) is a lid (4a (6) is a door device which is attached to a member (7) of a car frame (not shown) and is disposed close to and above the illumination box (4). . In elevators, it may be necessary to make the height of the elevator car as low as possible in order to secure the safety distance at the top and the specified values for the top clearance. As a result, the height of the lighting box (4) is formed as low as possible. Further, particularly in an elevator car having a small floor (1) area, the height of the lighting box (4) is further restricted because the door device (6) approaches the lighting box (4).

[Problems to be Solved by the Invention] In the conventional ceiling illumination device for an elevator car as described above, when the light source body (5) is replaced, a worker rides on the car and attaches the lid (4a) with the mounting screw (4b). Will be removed. Therefore, there is a problem that the elevator must be stopped for maintenance of the lighting device such as replacement of the light source body (5), and it is dangerous to get on the car, and a specialized elevator maintenance staff is required. .

In addition, when the height of the lighting box (4) is set sufficiently high, the diffuser plate (3) is pushed up from the inside of the cab (2) to incline the flange (3a) near the diagonal line of the opening (2b). The diffuser plate (3) can be removed into the cab (2) by passing it.

The present invention has been made to solve such a problem, and it is an elevator car with a short height that is capable of performing maintenance work such as replacement of fluorescent lights from the inside of the car. Has an aim.

[Means for Solving the Problems] In the ceiling illuminating device for an elevator car according to the present invention, a lighting device is mounted on the ceiling upper surface and covers the upper part of an opening provided in the ceiling of a car room, and has a light source body inside. A box, a side wall is provided upright on the peripheral edge, and has an engaging groove composed of a vertical portion opened to the upper end side of the side wall and a horizontal portion bent horizontally from the vertical portion, and a side wall around the engaging groove. A gap is provided between the opening edge of the ceiling and a thin plate piece is inserted from the car chamber, and a diffuser plate fitted into the opening of the ceiling is mounted on the upper surface of the opening edge of the ceiling, A fixture having an engaging member urged toward a groove end portion of a horizontal portion of the engaging groove of the light diffusing plate is provided, and the engaging member is positioned in the horizontal portion of the engaging groove of the light diffusing plate and the ceiling. Engage with the diffuser plate and insert the engaging element into the gap The thin plate piece is pressed to position it in the vertical portion of the engaging groove of the diffuser plate, and the engagement between the ceiling and the diffuser plate is released.

[Operation] In the ceiling illuminating device for an elevator car configured as described above, an appropriate thin plate piece is inserted between the opening and the gap of the diffuser plate, and the diffuser plate is mounted and removed by operating the cab or the engaging element. Is performed.

[Embodiment] FIGS. 1 to 4 are views showing an embodiment of the present invention, in which the same reference numerals as those in FIG. 5 designate corresponding portions, and (3) shows a side wall (3) on four turns. Having a diffuser plate, (3a) is a side wall (3b)
The upper edge of the flange is bent outward, and (31) is an engaging groove provided in the side wall (3b) facing the flange (3a), which is a vertical portion opened at the upper end of the side wall (3b), that is, the fitting. The mating part (31a) and the horizontal part (31) bent from the fitting part (31a).
b). (4) is a lighting box which is integrally formed and fixed to the upper surface of the ceiling (2a) and is arranged so as to cover the opening (2b), and (8) is provided at the opening (2b9 edge part) of the upper surface of the ceiling (2a) And (8a) is a U-shaped opening having a U-shaped opening, which is arranged corresponding to the engaging groove (31) of the diffuser plate (3) fitted in the opening (2b). Engagement groove (31)
The frame of the fixture (8) fixed to the edge of the opening (2b) so as to be opposed to the shaft, (8b) is a shaft provided between both side surfaces of the frame (8a), and (8c) is thin. A sliding piece that has a shape and both sides of the groove are slidably fitted to the shaft (8b).
(8d) is a part of the bottom surface of the groove of the sliding piece (8c) engaging groove (31)
The engagement element (8e) formed by projecting to the side is formed of a compression coil spring and is fitted to the shaft (8b) to engage the engagement element (8d) provided on the sliding piece (8c) with the engagement groove (31). ) Is an urging body that presses the groove toward the groove end of the horizontal portion (31b).

In the ceiling lighting device for the elevator car configured as described above, the flange (3
Hook a) on the edge of the opening (2b) facing the fitting (8). Then, the engaging member (8d) is pressed against the urging body (8e) with an appropriate thin plate piece to press the fitting portion (31) of the diffuser plate (3).
Move to position a). Then, the engaging groove (31) side of the light diffusing plate (3) is pushed up to fit the engaging element (8d) to the fitting portion (31a), and when the pressing force of the engaging element (8d) is released in this state, the sliding piece Since the (8c) is biased, the engaging element (8d) moves into the horizontal portion (31b). Thereby, the diffuser plate (3) is supported by the fixture (8) and the diffuser plate (3) is attached to the ceiling (2
It is attached to a).

When the diffuser plate (3) is removed from the ceiling (2a), an appropriate thin plate piece is inserted into the gap between the diffuser plate (3) and the opening (2b), and the engaging element (8d) is urged by the urging body (8e). ) Direction so that the fitting portion (31a) is aligned with the fitting portion (31a), the diffusing plate (3) can be removed by performing the operation opposite to the above-described mounting.
Therefore, even if the elevator car has a short height, it is possible to safely and easily perform maintenance work such as fluorescent lamp replacement from the car room (2) without stopping the elevator or requiring a special maintenance worker for the elevator. It is possible to obtain a car ceiling lighting device.

[Advantage of the Invention] As described above, the present invention is mounted on the ceiling upper surface covering the opening provided in the ceiling of the cab, the lighting box having the light source inside, and the side wall standing upright. And has an engaging groove consisting of a vertical portion opening to the upper end side of the side wall and a horizontal portion bent horizontally from the vertical portion, and the car interior is provided between the side wall around the engaging groove and the opening edge of the ceiling. A thin plate piece is inserted into the ceiling from the diffuser plate that fits into the opening of the ceiling, and the ceiling plate is mounted on the upper surface of the edge of the opening, in the direction of the groove end portion of the horizontal part of the engaging groove of the diffuser plate. A thin plate piece provided with a fixture having a biased engaging element, the engaging element being positioned in the horizontal portion of the engaging groove of the light diffusing plate to engage the ceiling and the diffusing plate, and the engaging element being inserted into the gap. Since it is pressed and positioned in the vertical portion of the engaging groove of the diffuser plate, and the engagement between the ceiling and the diffuser plate is released,
With a short elevator car, the diffuser plate can be removed safely and easily from the car interior even if there is a restriction on the height of the lighting box, and the fixture can be made invisible from the outside. Since the fixture is mounted on the upper surface of the edge of the opening of the ceiling, the diffuser plate can be downsized, and there is no component or the like attached to the diffuser plate to enable effective light diffusion.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an elevator car ceiling lighting device according to the present invention. FIG. 5 is an enlarged view of a substantial part of FIG. 5, which will be described later, and FIG. 2 is an enlarged view of a cross-section of the II-II line of FIG. Fig. 3 is a right side view of Fig. 2, Fig. 4 is a perspective view of the light diffusing plate of Fig. 1, and Fig. 5 is a vertical cross-sectional side view of an elevator car showing a conventional ceiling lighting device for an elevator car. . (2) is a cab room, (2a) is a ceiling, (2b) is an opening,
(3) is a diffuser plate, (3b) is a side wall, (4) is a lighting box,
(5) is a light source, (8) is a fixture, (8d) is an engaging element,
(31) is an engaging groove, (31a) is a fitting part, and (31b) is a horizontal part. The same or corresponding parts in the drawings are designated by the same reference numerals.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-66083 (JP, A) real-open Sho-53-160287 (JP, U) real-open Sho-55-123119 (JP, U) real-open Sho-56- 32304 (JP, U) Actually opened 50-56387 (JP, U) Actually opened 56-11405 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A lighting box which is mounted on the ceiling upper surface and covers an opening provided in a ceiling of a cab and has a light source inside, and a side wall is erected on a peripheral edge, and an upper side of the side wall is provided. A thin plate piece is formed from the car interior between the side wall around the engaging groove and the opening edge portion of the ceiling, and has an engaging groove formed of an opened vertical portion and a horizontal portion bent horizontally from the vertical portion. And a diffuser plate provided with a gap to be inserted into the opening of the ceiling, and mounted on the upper surface of the edge of the opening of the ceiling,
A fixture having an engaging member urged toward a groove end portion of a horizontal portion of the engaging groove of the light diffusing plate is provided, and the engaging member is positioned in the horizontal portion of the engaging groove of the light diffusing plate and the ceiling. Engage with the diffuser plate, and further press the engaging element by the thin plate piece inserted into the gap to position it in the vertical portion of the engaging groove of the diffuser plate, and engage the ceiling with the diffuser plate. A ceiling lighting device for an elevator car, characterized in that