JPH0641023U - Lighting fixture - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a fixture for a luminaire, which does not rotate or fall off once attached. A fixture 4 for a lighting fixture, which comprises a fitting 4 fixed to a tip of a mounting arm 2 and a coupling 5 fixed to a lighting fixture 3, and which engages these to attach the lighting fixture to the mounting arm. At the fitting 4, the fitting 4 is provided with an insertion portion 7 having a key 11 protruding from the outer peripheral wall and having a taper with the same inclination as the outer peripheral wall of the insertion portion 7 on the coupling 5. An insertion hole 13 having a key groove 14 for receiving the key 11 of the insertion portion 7 is provided, and a screw hole 12, 1 through which a tightening screw 12a is threadedly inserted at the same position of the key 11 and the key groove 14.
5 are provided respectively.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixture for attaching a lighting fixture.

[0002]

[Prior art]

 For example, in order to attach the lighting fixture 20 to the tip of the mounting arm 21 as shown in FIG. 10, the coupling 22 fixed to the lighting fixture 20 is fitted and attached to the fitting 23 fixed to the tip of the mounting arm 21. That is, as shown in FIG. 11, a groove 24 is provided around the fitting 23. When the coupling ring 22 is fitted into the fitting 23 and the tightening screw 25 of the coupling 22 is tightened, the tightening screw 25 The tip of the inserts into the groove 24 of the fitting 23, and the coupling 22 is fixed to the fitting 23. In this way, the groove 24 provided around the fitting 23 and the tightening screw 25 of the coupling 22 are used for fixing, so that the lighting fixture can be mounted according to the situation at the mounting site of the lighting fixture. This is because the lighting equipment can rotate the coupling 22 in a desired direction at the tip of the arm 21.

[0003]

[Problems to be solved by the device]

 However, it is often the case that an illumination device is attached to the tip of the attachment arm in this way, such as when illuminating an outdoor signboard or the like, which is high. Therefore, the lighting device 20 is easily affected by the wind, and the lighting device 20 shakes due to the wind and the tightening screw 25 gradually loosens, and the lighting device 20 together with the coupling 22 comes off the fitting 23 and falls off. A dangerous situation occurs where only 26 can hang down. Even if the lighting fixture 20 is fixed with the tightening screw 25, if a large moment is applied to the lighting fixture due to wind or the like, it cannot be held by the frictional force of the tightening screw alone, and the lighting fixture 20 is moved downward together with the coupling 22. It may rotate.

It is an object of the present invention to provide a fixture for a lighting fixture, which prevents the lighting fixture from rotating or coming off once attached.

[0005]

[Means for Solving the Problems]

 A fitting fixed to the tip of the mounting arm and a coupling fixed to the lighting fixture. The fitting for the lighting fixture that mounts the lighting fixture to the mounting arm by engaging them. A key that receives the key of the insertion part is provided with a taper on the outer peripheral wall and a key that protrudes from the outer peripheral wall, and the coupling has a taper with the same inclination as the outer peripheral wall of the insertion part. An insertion hole having a groove is provided, and a screw hole through which a tightening screw is screwed is provided at the same position of the key and the key groove.

[0006]

[Action]

 When the fitting insertion part is inserted into the insertion hole while the key fits into the key groove of the coupling, the outer peripheral wall of the insertion part and the inner wall of the insertion hole of the coupling have the same taper. Since the key groove fits, the fitting inserted into the coupling snaps into place without any gap, and then the tightening screw is inserted into the screw hole of the key groove of the coupling and the screw hole of the key of the fitting insertion part. Thread through both to secure the fitting and coupling.

[0007]

【Example】

 The luminaire fixture 1 of the present invention is used to mount the luminaire 3 to the tip of the mounting arm 2. As the luminaire, a halogen light whose lower surface opening 3c has a rectangular reflector is shown in FIG. 1, but the present invention is not limited to this. 3d is a cable. The fixture 1 includes a fitting 4 and a coupling 5, the fitting 4 is attached to the tip of the attachment arm 2, and the coupling 5 is attached to the attachment portion 3 a of the lighting fixture 3.

As shown in FIGS. 2 to 5, the fitting 4 includes a fitting portion 6 into which the tip portion of the mounting arm 2 is inserted and fitted, and an insertion portion 7 to be inserted into the coupling 5. The fitting portion 6 has a hole 8 for receiving the tip portion of the mounting arm 2, and an inner screw 9 for screwing with an outer screw of the mounting arm 2 is provided on an inner wall of the hole 8. Further, the fitting portion 6 is provided with a screw hole 10 for a fixing screw. The insertion portion 7 has a cylindrical shape, and the outer peripheral wall is provided with a taper such that the diameter thereof gradually decreases in the longitudinal direction thereof, and a ridge-shaped key 11 extending in the longitudinal direction is provided below the outer peripheral wall. The key 11 has a screw hole 12 for a tightening screw.

On the other hand, as shown in FIGS. 6 to 9, the coupling 5 is provided with a taper having the same inclination as the taper of the insertion portion 7 that receives the insertion portion 7 of the fitting 4 and whose inner diameter gradually decreases in the longitudinal direction. The insertion hole 13 is provided with a key groove 14 to be fitted into the key 11 of the fitting 4. The key groove 14 has a screw hole 15 for a tightening screw at a position corresponding to the screw hole 12 of the insertion portion 7 when the insertion portion 7 of the fitting 4 is inserted into the insertion hole 13. The coupling 5 also has an engaging portion 16 that engages with the mounting portion 3a (FIGS. 1 and 2) of the lighting fixture 3, and the engaging portion 16 has a toothed portion 3b of the mounting portion 3a of the lighting fixture 3. A tooth-shaped portion 17 that meshes with is provided in a circular shape. Reference numeral 18 is a hole through which the screw 19a of the fastener 19 passes.

To use the fixture 1 of the present invention, first, the fitting 4 is attached to the front end of the attachment arm 2, and the coupling 5 is attached to the attachment portion 3 a of the lighting fixture 3. That is, the tip of the mounting arm 2 is screwed into the hole 8 of the fitting 4 and fixed by the fixing screw 10a. On the other hand, the coupling 5 meshes the tooth-shaped portion 17 of the engaging portion 16 with the tooth-shaped portion 3b of the mounting portion 3a of the lighting fixture 3, and the screw 19a of the fastener 19 is passed through the hole 18 to allow the nut 19b. To fix it to the lighting fixture 3.

Next, as shown in FIG. 2, the insertion portion 7 of the fitting 4 is inserted into the insertion hole 13 while the key 11 is fitted in the key groove 14 of the coupling 5. Since the outer wall of the insertion portion 7 and the inner wall of the insertion hole 13 of the coupling 5 have the same taper, and the key 11 and the key groove 14 are fitted to each other, the fitting 4 inserted into the coupling 5 does not have a gap. And fit. Then, the tightening screw 12a is screwed into both the screw hole 15 and the screw hole 12 to fix the fitting 4 and the coupling 5. Finally, the fastener 19 is loosened, the angle of the lighting fixture 3 is adjusted to a desired angle, and then the fastener 19 is tightened and fixed again.

[0012]

[Effect of device]

 In the fixture for a lighting fixture according to the present invention, the outer peripheral wall of the fitting insertion portion and the inner wall of the insertion hole of the coupling are tapered with the same inclination, and the key protruding toward the outer peripheral wall of the insertion portion and the inner wall of the insertion hole are also provided. Since the key groove for receiving this key is provided on the, the fitting inserted into the insertion hole of the fitting, the fitting inserted in the coupling will fit tightly without a gap, and the key and key will not play. Since the groove fits, and the tightening screw acts as a double nut that threadedly penetrates both the screw hole of the key groove of the coupling and the screw hole of the key of the fitting insertion part, vibration and vibration Even if the lighting equipment shakes due to the wind, it can be completely prevented from loosening and loosening or rotating and misaligning.

[Brief description of drawings]

FIG. 1 is a view showing a usage situation of an embodiment of a fixture for a lighting fixture of the present invention.

FIG. 2 is a partial cross-sectional view seen from the lower side of FIG.

FIG. 3 is a front view of the fitting.

FIG. 4 is a front sectional view of the fitting.

FIG. 5 is a right side view of the fitting.

FIG. 6 is a front view of a coupling.

FIG. 7 is a front sectional view of a coupling.

FIG. 8 is a plan view of the coupling.

FIG. 9 is a left side view of the coupling.

FIG. 10 is a view showing a conventional fixture for a lighting fixture.

FIG. 11 is a partial cross-sectional view of a conventional fixture for a lighting fixture.

[Explanation of symbols]

 2 Mounting arm 3 Lighting fixture 4 Fitting 5 Coupling 7 Insertion part 11 Key 12 Screw hole 12a Tightening screw 13 Insertion hole 14 Key groove 15 Screw hole

Claims (1)

[Scope of utility model registration request] 1. A fixture for a lighting fixture, which comprises a fitting 4 fixed to a tip of a mounting arm 2 and a coupling 5 fixed to a lighting fixture 3, and by fitting these fittings, the lighting fixture is mounted on the mounting arm. In the tool, the fitting 4 is provided with an insert portion 7 having a key 11 protruding from the outer peripheral wall and having a tapered outer peripheral wall, and the coupling 5 has a taper having the same inclination as the outer peripheral wall of the insert portion 7. Is provided with an insertion hole 13 having a key groove 14 for receiving the key 11 of the insertion portion 7, and screw holes 12 and 15 through which a tightening screw 12a is screwed and penetrated are provided at the same positions of the key 11 and the key groove 14, respectively. A fixture for a lighting fixture, which is provided.