JPS6412048B2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a lighting fixture with variable irradiation direction.

[Technical background of the invention]

Generally, this type of lighting equipment has an annular frame that also serves as a reflective surface within the frame attached to the ceiling of a structure, and a fixture that engages with this annular frame and is attached to the side of the equipment body. It is held so that it can rotate vertically or horizontally.

[Problems with background technology]

However, since the rotation in the vertical direction is centered around the support shaft that pivots the side surface of the main body and the attachment, the operation is performed smoothly, but when rotating in the horizontal direction, the flange formed on the annular frame This is done by sliding the fitting on the main body into sliding contact with the flange, but since the flange is generally thin, it often deforms into a wave shape during molding, and the sliding of the main body may become uneven due to the occurrence of burrs, etc. Moreover, due to surface-to-surface contact, frictional resistance is large and sliding noise is generated, making rotational operation difficult.

[Purpose of the invention]

The present invention has been made in order to eliminate the above-mentioned drawbacks, and by providing a protrusion that slides on the flange part on the fixture attached to the main body, the main body of the device can smoothly rotate along the annular frame, and the irradiation direction can be adjusted. The purpose is to provide a lighting fixture that can change the

[Summary of the invention]

An annular holding frame having a flange portion is provided on the outside of the device main body having a light projection opening, and the main body includes a mounting portion attached to the side surface of the main body and a mounting portion continuous to the mounting portion that clamps the upper and lower surfaces of the flange portion from the outside. A mounting tool having a U-shaped engagement part is provided, and the engagement part is provided with protrusions arranged in a staggered manner along the circumferential direction on the inner upper and lower surfaces of the engagement part, so that the flange part The reason is that it is able to absorb wave deformation.

[Embodiments of the invention]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, details of one embodiment of the present invention will be explained with reference to the drawings. Reference numeral 1 denotes the main body of the instrument, which has a substantially spherical shape and has a rotationally quadratic curved surface 2 on its outer peripheral surface, and a light projection opening 3 provided at its lower end.
A lamp socket 4 is attached to the upper inside of the lamp, and a lamp 5 is attached to this socket 4. Reference numeral 6 denotes an annular holding frame, which is disposed on the outer side of the lower part of the instrument main body 1 and has a substantially U-shaped cross section, the upper part of which forms a flange part 7 that projects outward, and the lower part of which abuts against the periphery of the ceiling surface 8; Furthermore, the inner surface of the intermediate portion forms a reflective surface 9. Reference numeral 10 denotes a mounting frame arranged inside the ceiling surface 8 via a support (not shown). 11
is a fixture that is attached to the side surface of the instrument body 1 , with a through hole 12 provided at one end of the upper part and a support shaft 14 inserted through the through hole 12 and the tightening hole 13 of the body 1 , to which the attachment is attached. In the lower part, there is an upper clamping piece 15 that is bent at right angles from the surface having the through hole 12 and protrudes outward. A U-shaped engaging portion 18 is formed with a lower clamping piece 17 that extends in parallel with and in the left-right direction, and the flange portion 7 is clamped within this engaging portion 18. Reference numeral 19 denotes protrusions, for example, protrusions arranged in a staggered manner along the circumferential direction on the upper and lower inner surfaces of the upper and lower holding pieces 15 and 16, respectively.

Next, we will discuss the effect. When adjusting the irradiation direction of the lamp 5, first, in the vertical direction, the support shaft 14 of the fixture 11 attached to the side surface of the instrument body 1 is adjusted.
The main body 1 may be rotated in a desired direction around the center. Moreover, adjustment in the horizontal direction can be achieved by rotating the main body 1 along the flange portion 7 of the annular holding frame 6. That is, the flange portion 7 , which is sandwiched between, for example, two protrusions 19 on the inner upper surface side and one protrusion portion 19 on the lower surface side, disposed on the U-shaped engaging portion 18 of the fixture 11 has a corrugated shape. Even if the main body 1 is deformed, this waveform is absorbed during sliding contact with the protrusion 19, allowing the main body 1 to rotate smoothly.
Note that the protrusions 19 are not limited to protrusions, and may be protrusions, and the number thereof is not limited to three.

〔Effect of the invention〕

As described in detail above, the present invention consists of a device main body, an annular holding frame provided with a flange portion on the outside of the main body, and a U-shaped engagement that holds the mounting portion attached to the side surface of the main body and the flange portion. The lighting fixture is equipped with a fixture having a flange portion, and protrusions that are arranged in a staggered manner along the circumferential direction on the inner upper and lower surfaces of the U-shaped engagement portion and come into sliding contact with the flange portion. When adjusting the direction horizontally, even if the flange is deformed into a wave shape, the waveform is absorbed when the protrusions slide into contact, allowing smooth rotation without increasing frictional resistance. It has special advantages. It also has the advantage of being able to prevent burrs from digging into it and preventing abnormal noises from occurring.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention. Fig. 1 is a partially cutaway front view of the lighting fixture, Fig. 2 is a sectional view showing an enlarged main part, Fig. 3 is a front view of the fixture, and Fig. 3 is a front view of the lighting fixture. 4
3 is a top view, FIG. 5 is a side view, and FIG. 6 is a partially cutaway front view showing the state of sliding contact with the flange portion. DESCRIPTION OF SYMBOLS 1 ... Instrument main body, 6... Annular holding frame, 7... Flange part, 11 ... Mounting tool, 12... Mounting part, 18... U-shaped engagement part, 19... Projection part.

Claims (1)

[Scope of Claims] 1. An instrument main body having a light projection opening; an annular holding frame having a flange portion and disposed on the outside of the main body; a mounting portion attached to a side surface of the main body; and this mounting portion. a mounting device having a U-shaped engaging portion that continuously clamps the upper and lower surfaces of the flange portion from the outside; A lighting fixture comprising: a protrusion that slides into contact with a flange;