JPH0452885Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a hanging structure for a lighting fixture that is used by being suspended from a ceiling or the like.

[Conventional technology] When hanging lighting equipment from the ceiling, there are two types of lighting equipment: one uses a special hanging member such as a chain or a hanging cord, and the other uses a power cord with high tensile strength (so-called pendant cord). A type in which the main body is supported by a hanging ceiling on the ceiling is known. In the latter case, only one cord is used to hang the lighting fixture, so it looks better than the former, and it also provides mechanical support and electrical connection to the ceiling simply by connecting it to the hanging ceiling. It has the advantage of being able to do both at the same time.

[Problem that the invention attempts to solve]

However, with types that hang the lighting fixture using only one cord, it is difficult to stop the fixture at the desired rotational position, and even if you try to forcefully correct the position, the cord will only twist and the original It was impossible to adjust the rotational position because it would return to the original position. For this reason, the direction of the lighting fixture cannot be determined, and especially in the case of a non-circular light source or a square lighting fixture, it may not be possible to maintain balance with the room, which not only worsens the appearance but also affects the light distribution characteristics. I also didn't like it.

[Means for solving problems]

In order to solve the above problem, the present invention adopts the following configuration. That is, the hanging structure of the present invention is led out from the upper surface side of the chassis of the lighting fixture body, the base end side is fixed inside the chassis, and the other end side is connected to a connector for supporting it on the ceiling side. a cord, a cord storage cover having a cord stopper provided at an intermediate position in the length direction of the cord and capable of locking the cord at a desired length; a cord storage cover provided on the lower surface side of the cord storage cover; a cord holding plate having a hole through which the cord is inserted and a cord fixing means for fixing the cord; a cord holding plate having a central hole through which the cord is inserted; the cord holding plate is fixed to the upper surface side of the chassis; An angle adjusting plate is provided to be relatively rotatable within a predetermined angle range around the cord, and a plurality of arc-shaped lengths are provided on the angle adjusting plate around the center hole. The present invention is characterized by comprising a fixing means having a set screw passing through the hole, and fixing the angle adjusting plate at a desired rotational position with respect to the cord holding plate by tightening the screw.

[Effect]

In the hanging structure having the above configuration, the lighting fixture body is suspended from a ceiling surface or the like via a hook ceiling by a cord. In such a free state, the mutual rotational positions of the cord storage cover and the cord holding plate are substantially unchanged with respect to the cord suspended from the ceiling. However, if the fixation between the cord holding plate and the angle adjustment plate by the fixing means is released, the angle adjustment plate becomes rotatable relative to the cord holding plate. The angle adjustment plate is fixed to the chassis of the lighting fixture, so after adjusting the relative position of the angle adjustment plate to the cord holding plate, tighten the set screw of the fixing means to attach the angle adjustment plate to the cord holding plate. Once fixed, the rotational position of the chassis relative to the cord holding plate can be adjusted. In other words, since the cord holding plate has a certain relative positional relationship with the ceiling surface through the cord, by adjusting the orientation of the chassis relative to the cord holding plate as described above, the lighting fixture body relative to the ceiling surface can be adjusted as described above. The orientation can be adjusted. In addition, since the angle holding plate and the cord holding plate are fixed by tightening with setscrews, the fixation is secure, the lighting fixture body does not rotate unexpectedly, and it can be adjusted by external vibrations etc. There is no risk of the position going out of order.

〔Example〕

An embodiment of the present invention will be described below with reference to Figs. 1 to 3. The chassis 2 made of sheet metal constituting the body of the lighting fixture main body 1 has a rectangular planar shape. Inside the chassis 2,
The chassis 2 houses a discharge lamp ballast and lighting circuit components (not shown). A fluorescent lamp (not shown) bent into a ring or U shape is mounted on the underside of the chassis 2.
is disposed on the outside of the fluorescent lamp, and a light control body is provided on the outside of the fluorescent lamp.

A through hole 6 is provided in the center of the upper surface of the chassis 2, and a power cord 7 is led out from the through hole 6. A base end 7a of the cord 7 is fixed inside the chassis 2 by a clamp fitting 8 and a screw 9. At the other end 7b of the court 7, there is a ceiling 10
A well-known coupling device 12 for coupling to a hook ceiling 11 provided on is connected. The cord 7 has sufficient tensile strength to support the load of the instrument body 1.

Further, a disk-shaped cord storage cover 14 is provided at an intermediate position in the length direction of the cord 7. A cord stopper 15 for fixing the coat 7 is provided at the center of the cord storage cover 14. The cord stopper 15 has a well-known structure capable of locking the cord 7 at a desired length, and is designed to prevent the cord 7 from moving in the pulling direction even when a force equivalent to the load of the instrument body 1 is applied. The interior of the body 14a of the cord storage cover 14 is large enough to accommodate the excess portion 7c of the cord 7 with slack. Flange portion 14 of cord storage cover 14
A pair of holes 16 penetrating in the vertical direction are provided on both sides of b.
is provided.

A cord holding plate 18 is provided on the lower surface side of the cord storage cover 14. Cord holding plate 1
8 has a circular planar shape, and a hole 19 through which the cord 7 is inserted is provided in the center thereof.
This cord holding plate 18 is provided with a cord fixing means 20 for fixing the cord 7. The cord fixing means 20 of this embodiment includes a clamp fitting 21
and a screw 22 for tightening the clamp fitting 21. A pair of screw holes 23 are provided at the edge of the cord holding plate 18 at positions corresponding to the holes 16 of the cord storage cover 14 described above.

Furthermore, the flange portion 14 of the cord storage cover 14
An annular angle adjustment plate 25 is provided so as to surround the outside of the cord holding plate 18. The mounting flange portion 26 of the angle adjustment plate 25 is fixed to the chassis 2 with a plurality of screws 27. A central hole 28 through which the cord 7 is inserted is formed in the center of the angle adjustment plate 25. This center hole 28 has a body 14a of the cord storage cover 14.
are fitted to be rotatable about a vertical axis. That is, the angle adjustment plate 25 is provided so as to be rotatable relative to the cord holding plate 18 around the cord 7.

A fixing means 30 is provided on the angle adjustment plate 25. This fixing means 30 includes the angle adjustment plate 25
This is for fixing the cord at a desired rotational position with respect to the cord holding plate 18. This fixing means 30 is
A pair of arc-shaped long holes 3 concentric with the central hole 28
1, a pair of setscrews 32 inserted into these elongated holes 31, and screw holes 23 into which these setscrews 32 are screwed. The chassis 2 also has a pair of arc-shaped long holes 33 at positions corresponding to the long holes 31, into which the tips of the setscrews 32 are movably inserted.
has been established. The set screw 32 passes through the elongated hole 31 and the hole 16 and is screwed into the screw hole 23, and the tip of the set screw 32 is configured to fit into the elongated hole 33 of the chassis 2.

Next, the operation of the suspension structure having the above configuration will be explained.

Connector 12 provided at the end of cord 7
By connecting this to the hanging ceiling 11 on the ceiling, the lighting fixture main body 1 can be suspended by the cord 7. In addition, this connector 12
An electrical connection between the contact fitting on the side of the hook ceiling 11 and the cord 7 is made through the cable. In the free state suspended from the ceiling 10, code 7
Cord storage cover 14 and cord holding plate 18
The rotational positional relationship of the two with respect to each other is substantially unchanged. However, when the set screw 32 is loosened, the fixation between the cord holding plate 18 and the angle adjustment plate 25 is released, and the angle adjustment plate 25 is connected to the cord holding plate 18 through the elongated hole.
Rotation is possible within a length range of 1.

Since the angle adjustment plate 25 is fixed to the chassis 2 with screws 27, the cord storage cover 14
Rotate the instrument body 1 to the desired position by pressing with your hand. In this way, after adjusting the relative position of the angle adjustment plate 25 with respect to the cord holding plate 18, if the angle adjustment plate 25 and the cord holding plate 18 are fixed to each other without tightening the set screws 32, the chassis 2 can be adjusted relative to the cord holding plate 18. The relative rotational position can be adjusted. That is, since the cord holding plate 18 is in a constant relative positional relationship with the ceiling 10 via the cord 7,
By adjusting the orientation of the chassis 2 with respect to the cord holding plate 18 as described above, the orientation of the lighting fixture main body 1 with respect to the ceiling 10 can be adjusted as a result.

Therefore, when using the rectangular lighting fixture main body 1, the angle of the fixture main body 1 can be finely adjusted in a direction that balances the shape of the room. Even if the above adjustment is made, the cord 7 does not twist in the range from the connector 12 to the cord holding plate 18, so it will not return to its original position after the adjustment. The adjustment work described above can be performed by loosening and tightening the setscrews 32 while the lighting fixture main body 1 is suspended from the ceiling 10, making it easy and accurate to make adjustments to match the shape of the room. It is possible to make fine adjustments. Also, a set screw 3 passing through the elongated hole 31 of the angle adjustment plate 25
2, the angle holding plate 25 and the cord holding plate 18 are fixed, so that the fixation is reliable. Therefore, regardless of vibrations from the outside, there is no fear that the lighting fixture main body 1 will be inadvertently rotated and the adjustment position that matches the shape of the room will be deviated. Incidentally, the length of the cord 7 can be adjusted at the cord stopper 15 as in the conventional cord.

[Effect of idea]

According to the present invention, when hanging the lighting fixture from the ceiling using a single cord, the rotational position of the lighting fixture with respect to the ceiling can be easily and reliably adjusted, and even square-shaped fixture bodies can be adjusted. The lighting equipment can be hung in a desired direction according to the room, and there is no fear that the adjustment position of the lighting equipment body will be inadvertently messed up.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an exploded perspective view showing a hanging structure, FIG. 2 is a sectional view of a part of a lighting fixture equipped with a hanging structure, and FIG. 3 is a plan view. 1... Lighting equipment body, 2... Chassis, 7...
Cord, 7a... base end, 7b... other end, 10...
Ceiling, 14... Cord storage cover, 15... Cord stopper, 18... Cord holding plate, 19...
Hole, 20... Cord fixing means, 25... Angle adjustment plate, 28... Center hole, 30... Fixing means, 16...
...hole, 23...screw hole, 31...long hole, 32...
Set screw.

Claims (1)

[Claims for Utility Model Registration] It is led out from the top side of the chassis of the lighting fixture body, and the base end side is fixed to the inside of the chassis, and the other end side is connected to a connector for supporting it on the ceiling side. a cord; a cord storage cover having a cord stopper provided at an intermediate position in the length direction of the cord and capable of locking the cord at a desired length; a cord storage cover provided on the lower surface side of the cord storage cover; a cord holding plate having a hole through which the cord is inserted and a cord fixing means for fixing the cord; and a cord holding plate having a central hole through which the cord is inserted, the cord holding plate being fixed to the upper surface side of the chassis. The angle adjustment plate is provided so as to be relatively rotatable within a predetermined angle range around the cord, and the angle adjustment plate is provided with a plurality of arc-shaped lengths located around the center hole. A lighting device comprising a fixing means having a set screw passing through the hole, and fixing means capable of fixing the angle adjustment plate at a desired rotational position with respect to the cord holding plate by tightening the screw. Hanging structure.