JPS6331294Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a ceiling-mounted lighting fixture in which a chassis equipped with a lighting fixture is directly attached to a ceiling surface in a room.

[Technical background of the invention and its problems]

FIG. 1 shows an exploded view of a conventional lighting device of this kind, in which a is a mounting board and b is a chassis.
The chassis b is formed into a substantially square shape, and has a plurality of globes c as lamps on its lower surface, and annular fluorescent lamps d are accommodated in each of the globes c. The mounting board a is formed to have almost the same size and shape as the chassis b, and screws e are provided at the intermediate portions of the periphery.
are attached so as to protrude downward, and through holes f are bored in the middle portion of the periphery of the chassis b in correspondence with these screws e.

Then, attach the mounting board a to the ceiling surface g with wood screws h...
Attach and secure. Next, the chassis b is fitted onto the outer periphery of the mounting board a, and each screw e is made to protrude to the lower surface side of the chassis b through each through hole f, and a nut i is screwed onto the protruding end of the screw e. Attach chassis b to ceiling surface g by tightening.

The mounting board a is provided for safety reasons so that the wiring components exposed on the top side of the chassis b do not come into direct contact with the ceiling surface g. It has a large shape that covers the entire upper surface of the shear shear a, which increases its weight, makes it inconvenient to handle during installation work, and increases costs. Furthermore, since the screw e... is arranged in the middle part of the periphery of the mounting board a, when the chassis b is attached by tightening the nut i..., due to the tightening force, or after the chassis b is attached, due to its weight, Screw e...
There was a risk that the mounting board (a) at the location where the chassis (b) was placed would be bent and deformed, making the mounting state of the chassis (b) unstable.

[Purpose of invention]

This idea was developed with these points in mind, and its purpose is to reduce the weight of the mounting board and to create a ceiling that allows the chassis to be mounted in a stable state at all times. An object of the present invention is to provide a direct-mounted lighting fixture.

[Summary of the idea]

That is, in this invention, a rectangular mounting board having a bent piece bent at right angles to the periphery is fixed to a ceiling surface, and a rectangular chassis equipped with a light fixture is attached to this mounting board. The chassis is formed into a rectangular shape smaller than the chassis, with its corner part serving as a mounting part, and the middle part of the periphery of the chassis facing the mounting part, and the middle part being fastened to the mounting part with a fastener. It is designed to be mounted on the ceiling.

[Example of idea]

An embodiment of this invention will be described below with reference to FIGS. 2 and 3. In the figure, 1 is a mounting board, and 2 is a chassis. The chassis 2 is formed into a substantially square shape, and on its lower surface, for example, four globes 3 as lamps are evenly provided, and a ring-shaped fluorescent lamp 4 is accommodated in each globe 3. A through hole 5 is bored in the middle of the periphery of the chassis 2 at a position between the adjacent gloves 3.

The mounting board 1 is formed in a similar shape smaller than the chassis 2, that is, a square with an area approximately 1/2 that of the chassis 2, and a bending piece 6 that is bent at right angles is integrally provided on the periphery of the mounting board 1. . Screws 8 are attached to each corner portion 7 of this chassis 2 so as to project downward, and insertion holes 9 are bored in these corner portions 7.

In addition, 10... is a nut that constitutes a fastening tool in combination with the screw 8... of the chassis 2, and 11...
are wood screws for mounting the mounting board 1.

First, wood screws 11 are inserted through the insertion holes 9 of the mounting board 1 to the ceiling surface, and the mounting board 1 is attached and fixed to the ceiling surface 12 by tightening them. Next, as shown in FIG. 3, the chassis 2 is fitted onto the outer periphery of the mounting board 1 so that each corner part 7 of the mounting board 1 is located at the middle of each side of the chassis 2, and each corner part 7 The screws 8 are made to protrude from the bottom surface of the chassis 2 through the through holes 5, and nuts 10 are screwed onto each of the protruding ends and tightened. As a result, the chassis 2 is attached to the ceiling surface 12. Note that wiring components, etc. are exposed at the center of the upper surface of the chassis 2, which is covered by the mounting board 1, and is covered by the ceiling surface 1.
Contact with 2 is prevented.

The mounting board 1 is formed to be small and therefore lightweight, making it convenient to handle when mounting it on the ceiling surface 12, and being inexpensive. Each screw 8 of the mounting board 1 is provided at each corner 7 thereof, that is, at the intersection of the pair of bent pieces 6, 6, and therefore receives the tightening force of the nut 10 and the weight of the chassis 2. However, that portion is reinforced by the bending pieces 6, 6 to prevent deformation, so that the mounted state of the chassis 2 can always be maintained in a stable state. Natsu 10... is glove 3,
3, so that the nuts 10 are hidden by the gloves 3 and difficult to see, improving the appearance.

In addition, in the above embodiment, the fastener is composed of a screw and a nut, but the fastener is not limited to this case.
For example, in the case of a structure consisting of a screw hole and a screw that is screwed into the screw hole, in other words, a screw hole is formed in the corner of the mounting board as the mounting part, the chassis is passed through this screw hole and the screw is screwed, and the chassis is attached by tightening the screw hole. This may also be the case.

[Effect of idea]

As explained above, according to this invention, it is possible to reduce the weight of the mounting board, making it convenient to handle, and reducing costs.Furthermore, the mounting state of the chassis is always kept stable by preventing deformation of the mounting board. It has the effect of being able to

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a conventional lighting device, FIG. 2 is an exploded perspective view of a lighting device according to an embodiment of the invention, and FIG. 3 is a plan view of the device in an assembled state. 1... Mounting board, 2... Chassis, 3... Globe (lamp), 6... Bending piece, 7... Corner part,
8... Screw (fastener), 10... Nut (fastener), 12... Ceiling surface.

Claims (1)

[Scope of utility model registration request] A rectangular mounting board having a bent piece bent at right angles to the periphery is fixed to the ceiling surface, and a rectangular chassis equipped with a light fixture is attached to this mounting board. The chassis was formed into a rectangular shape, its corner part was used as a mounting part, the middle part of the periphery of the chassis was opposed to the mounting part, and the middle part was fastened to the mounting part with a fastener to attach the chassis to the ceiling surface. A ceiling-mounted lighting fixture characterized by: