JP2588033Y2 - lighting equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture whose lighting position can be changed by changing the direction of the lighting fixture body.

[0002]

2. Description of the Related Art FIG.
There is something like that shown in This is shown in FIGS.
As shown in FIG. 1, a rotary cylinder 3 is provided at a lower end of a support arm 9 projecting from the lighting fixture main body 2, and the rotary cylinder 3 is covered by a cylindrical projection 4 projecting from the support base 1. It is fitted. The rotating cylinder 3 is provided with a slit 7 along the outer peripheral surface, and a fixing screw 8 is screwed into the screw hole 6 provided in the projection 4 from the outer surface of the rotating cylinder 3 through the slit 7. It has become. When the lighting fixture main body 2 is to be rotated, the rotating cylinder 3 is rotated within the range of the slit 7 with the fixing screw 8 loosened, and the fixing screw 8 is again rotated.
So that the rotating tube 3 can be fixed at an arbitrary position by clamping the opening edge of the slit 7 provided in the rotating tube 3 between the outer peripheral surface of the projection 4 and the head 8 a of the fixing screw 8. Has become.

[0003]

However, in the conventional example described above, the outer surfaces of the projection 4 and the rotary cylinder 3 are arc-shaped, while the outer surfaces of the rotary cylinder 3 are pressed against each other. The inner surface side of the head 8a of the fixing screw 8 is flat, and even if it is tightened with a large tightening force, the contact area on the outer surface of the rotary cylinder 3 is small, so that the fixing force is weak and the external force causes illumination. There has been a problem that the device main body 2 is easily displaced. For this reason, in order to increase the holding force of the head 8 a of the fixing screw 8, the diameter of the rotating cylinder 3 and the projection 4 may be increased, or the head 8 a of the fixing screw 8 may be increased.
Although it is conceivable to increase the size of the lighting equipment, there is a problem that the lighting equipment is unnecessarily large and the design is deteriorated.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem, and to increase the holding force of a fixing screw without unnecessarily increasing the size or deteriorating the design. It is intended to provide.

[0005]

According to the present invention, in order to achieve the above object, a lighting fixture main body 2 is disposed on a support base 1 and a rotary cylinder 3 projecting downward from the lighting fixture main body 2. Is fitted to a cylindrical projection 4 projecting above the support base 1, and a screw hole 6 is provided in a notch 5 formed by cutting out a part of the outer peripheral portion of the projection 4. A fixing screw 8 is screwed into the screw hole 6 through a slit 7 provided along the outer peripheral surface of the cylinder 3, and the head 8 a of the fixing screw 8 is pressed against the opening edge of the slit 7.

[0006]

When the fixing screw 8 is tightened, the fixing screw 8 is pressed against the opening edge of the slit 7 at the notch 5.
The rotating cylinder 3 is deformed inward by the head 8a, and the inner peripheral surface of the rotating cylinder 3 is pressed against the edge of the notch 5 so that the rotating cylinder 3 is fixed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments. The luminaire is mainly composed of a luminaire main body 2 in which a luminaire is housed and arranged, and a support base 1 on which the luminaire main body 2 is mounted. At the lower end of a support arm 9 provided at the lower part of the lighting fixture main body 2, a cylindrical rotating cylinder 3 is provided. The bottom plate 9a provided at the lower end of the support arm 9 is mounted on the top plate 3a of the rotary cylinder 3, and the bottom plate 9a and the top plate 3a are connected and fixed to each other by a fixing tool.
10 wires. A slit 7 is provided on the outer peripheral portion of the rotary cylinder 3 along the circumferential direction.

As shown in FIG. 1, a main body of the support base 1 is formed by projecting a columnar projection 4 upward from a substantially central portion of the upper surface of the support base body 1a. 1a
Is provided with a through hole 11 into which a fixing tool for fixing the support base body 1a to the mounting surface is inserted. A cutout portion 5 is formed in the outer peripheral portion of the protrusion 4 by cutting out a part of the outer peripheral portion, and the cutout portion 5 is provided with a screw hole 6 into which a fixing screw 8 is screwed. .

The lighting fixture main body 2 and the support base 1 are fitted with a rotating cylinder 3 provided on the lighting fixture main body 2 on a projection 4 projecting from the support base 1, and a slit 7 is formed from the outer surface side of the rotating cylinder 3. 2, a fixing screw 8 is screwed into a screw hole 6 provided in the cutout portion 5 of the protrusion 4 and the fixing screw 8 is tightened as shown in FIG. Are connected and fixed to each other by being pressed against the opening edge of the opening.

In order to connect the rotary cylinder 3 and the projection 4 to each other, the rotary cylinder 3 is rotated with respect to the projection 4 within the range of the slit 7 to change the position of the lighting fixture body 2. When the fixing screw 8 is tightened and the head 8 a of the fixing screw 8 is pressed against the opening edge of the slit 7, the opening edge of the slit 7 is deformed inward due to the presence of the notch 5,
The contact area of the head 8a of the fixing screw 8 pressed against the opening edge of the slit 7 can be increased, and the deformed rotary cylinder 3 hits the edge of the notch 5, as shown in FIG. The stopper effect is obtained, and the holding force of the rotary cylinder 3 by tightening the fixing screw 8 can be increased. Here, FIG.
When the rotary cylinder 3 is rotated within the range of the slit 7 by providing the notch 12 at the end of the slit 7 as shown in FIG. Even so, the opening edge of the slit 7 can be deformed by tightening the fixing screw 8, and a stopper effect due to the deformation can be obtained.

[0011]

According to the present invention, as described above, the lighting fixture main body is disposed on the support base, and the rotating cylinder projecting below the lighting fixture main body is formed into a cylindrical shape projecting above the support base. A screw hole is provided in a notch formed by notching a part of an outer peripheral portion of the protrusion, and a screw is provided through a slit provided along the outer peripheral surface of the rotating cylinder. The fixing screw is screwed into the hole, and the head of the fixing screw is pressed against the opening edge of the slit. It can fix the rotating cylinder by pressing the inner peripheral surface of the rotating cylinder against the edge of the notch, which unnecessarily increases the size or deteriorates the design. Increase the holding force of the fixing screw without tightening In which it is possible to fix the lighting fixture body.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view showing a mounting state of a fixing screw.

FIG. 3 is a partially enlarged sectional view of a portion A in FIG. 2;

FIG. 4 is a partial perspective view showing another embodiment.

FIG. 5 is a side view showing a conventional example.

FIG. 6 is a partially enlarged perspective view of the same.

FIG. 7 is a plan sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support stand 2 Lighting device main body 3 Rotating cylinder 4 Projection body 5 Notch part 6 Screw hole 7 Slit 8 Fixing screw 8a Head

Claims (1)

(57) [Scope of request for utility model registration] 1. A lighting fixture main body is disposed on a support base, and a rotating cylinder projecting downward from the lighting fixture main body is fitted to a columnar projection projecting upward from the support base. A screw hole is provided in a notch formed by cutting out a part of the outer peripheral portion of the projection, and a fixing screw is screwed into the screw hole through a slit provided along the outer peripheral surface of the rotating cylinder. A lighting fixture comprising a fixing screw head pressed against an opening edge of a slit.