JPS5816722B2 - lighting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to lighting equipment such as downlights.

In conventional ceiling embedding of this type of lighting equipment, the equipment body is inserted into the embedding hole, and the fixture is fixed to the equipment body by screwing.

This has the disadvantage of making installation work at high places cumbersome.

It is therefore an object of the invention to provide a lighting fixture that is even easier to install.

An embodiment of the invention is shown in FIGS. 1 to 5.

That is, this lighting fixture has an embedding hole 2 formed in the ceiling 1, and when installing the lighting fixture main body 3 into the hole 2, a flange 5 is integrally formed in the opening 4 of the lighting fixture main body 3, and the embedding hole 2 is formed in the ceiling 1. A plurality of stop position adjustment slits 8a, 8 are provided in the side part 7 of the lighting fixture body 3 in the direction of the cylinder axis.
b, and the back surface 9 of the ceiling 1 is formed in these slits 8a and 8b.
While holding the fixture 10 slidably, the control lever 12 is pivotally attached to the sliding contact portion 11 of the fixture 10 inside the lighting fixture body 3, and the fixture 10 is pressed against the ceiling. Due to the rotation of the fixture 1, it comes into pressure contact with the lighting fixture body 3.
0 is fixed (Fig. 1).

13 is a socket attached to the lighting fixture main body 3, and 14 is a lamp.

Details of the fixture 10 and the operating lever 12 are shown in FIGS. 2 to 5.

That is, the fitting 10 is made of a piece of elastic material such as a metal fitting, and the sliding contact portion 11 is formed by a slit continuously between a pair of support portions 15 and 15' that slide on the outer surface of the lighting fixture body 3. A curved portion 16 is formed that extends inwardly through 8a and 8b.

Further, the operating lever 12 has a U-shaped bar main body 18 fixed to both ends of a cam body 17 which is obtained by cutting one side of a cylindrical body in the axial direction.

19 is an auxiliary guide, and 20 is a biting part.

In this case, a lever insertion portion 21 is formed at the upper end of each of the slits 8a and 8b, a cam body 17 is inserted into the curved portion 16, and the operating lever 12 is passed through the insertion portion 21.

At this time, as shown in FIG. 3, the distance X between the inner surface of the curved portion 16 and the edges of the slits 8a and 8b, the diameter y of the cam body 17, and the minimum diameter 2 including the cam surface 22 of the cam body 17. Let the mutual relationship of z < x < y.

Now, when sliding the sliding contact part 11 of the fixture 10 and locking the fixture 10 to the back surface 9 of the ceiling 1, the state of the operating lever 12 is changed to the cam surface of the cam body 17 as shown in FIG. 22 is placed in a horizontal position so as to face the inner surface of the lighting fixture main body 3.

At this time, since Z <

Next, when fixing the fixture 10 at a predetermined position in the slits 8a, 8b, the operating lever 12 is rotated to a downward vertical position, as shown in FIG.

At this time, since x < y, it acts to widen
The pair of support parts 15, 15' are biased away from each other.
is pressed against the outer surface of the lighting fixture body 3 and fixed therewith.

As a result, this lighting fixture can be installed or removed by rotating the operating lever 12 by 90 degrees.

Note that the cam body 17 of the operating lever 12 can be made of a plate that takes advantage of its thickness and width.

As described above, in the lighting fixture of the present invention, a narrow curved part is formed in the middle part of the plate-shaped fixture, the plate-like fixture is slidably passed through the slit, and the lever is fitted into the curved part that enters the interior of the fixture body. By rotating the lever, the curved portion is drawn inward, thereby fixing the fixture to the main body of the instrument, resulting in the following effects.

In other words, the main body of the instrument can be attached or detached by one-touch operation of the lever.

(2) The fixture can be easily attached to the instrument body.

(3) Since both ends of the curved portion are supported by the slits to hold the fixture in a vertical position, the fixture will not tilt when it is fixed.

(4) Since the operating lever can be rotated in the direction in which the fixture is pressed against the ceiling, the appliance body will not slide down from the ceiling when the fixture is fixed.

(5) The curved portion is durable against the pulling force of the lever, unlike the bent portion which loses its durability and opens, so the fixture will not loosen over time.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a perspective view of the main parts thereof, Fig. 3 is a dimensional relationship diagram of the cam body, and Figs. 4 and 5 are explanatory diagrams of the operation of the operating lever. be. 1...Ceiling, 2...Embedding hole, 3...
...Lighting equipment body, 4...Opening, 5...
... Tsuba, 6 ... Surface, 7 ... Side part,
8a, 8b...Slit, 9...Back surface, 10...Mounting tool, 11...Sliding contact part,
12... Operation lever, 15, 15'...
・Support part, 16...Curved part, 17...
Cam body, 18... U-shaped bar main body.

Claims (1)

[Scope of Claims] 1. A device body that is embedded in a hole in the ceiling and has a collar of its lower opening locked to the lower edge of the hole, and a device formed vertically on the side wall of the device body. a pair of slits, and a curved part with a width that can freely slide over these slits is formed in the middle part of the slit, and the lower end of the slit abuts the back side of the ceiling, and the curved part is inserted into the slit from the outside to abut against the outer surface of the instrument body, and the fitting is fitted inside the curved part of the instrument body that enters the instrument body, thereby causing the attachment to be inserted into the instrument body. A lighting fixture comprising: an operation lever having a cam body that fixes the fixture to the fixture body by drawing the curved portion inward of the fixture body by rotating the fixture in a direction to press it against the ceiling. 2. The lighting device according to claim 1, wherein the cam body of the operating lever is a cylindrical body with a part of the surface made flat.