JP5847486B2 - Lighting device suspension device - Google Patents

Description

  The present invention relates to a ceiling suspension device that suspends a lighting fixture from a ceiling, and in particular, to suppress shaking of a building due to an earthquake, strong wind, etc., or shaking of a ship due to waves, etc. The present invention relates to a hanging device for a lighting fixture. In this specification, “ceiling part” means a part where a lighting fixture is suspended, and not only a ceiling part of a room, hallway, hall, etc. in a building, but also a room, hallway, hall, deck, etc. in a ship. including.

  Conventionally, as this type of technology, there is a configuration as disclosed in Patent Document 1, for example. In this configuration, as shown in FIG. 8A, a balancer 51 is provided in the middle of a hanging cord W of a lighting fixture 50 that is hung from a ceiling C of a building room or the like. As shown in FIG. 8B, the balancer 51 attenuates the shaking of the lighting fixture 50 during an earthquake due to its inertial force.

JP-A-9-330606

  However, in the technique of Patent Document 1, since the hanging cord W is directly fixed to the ceiling portion C, the roll of the building due to an earthquake is directly transmitted to the lighting fixture 50 via the hanging cord W. For this reason, the lighting fixture 50 sometimes shook greatly due to the rolling of the frequency outside the natural frequency of the balancer 51. And when the lighting fixture 50 shakes greatly, there existed a possibility that a lighting fixture might collide with the wall of a room, and a lighting fixture and a wall might be damaged.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a hanging device for a lighting fixture that can effectively suppress the shaking of the lighting fixture due to shaking of a building or the like.

In order to achieve the above object, a hanging device for a lighting fixture according to the present invention includes a cylindrical support member fixed to a ceiling portion and the support member in a state in which the lighting fixture is suspended via a hanging cord. And a biasing member that is provided between the support member and the displacement body and that imparts a biasing force in a direction against displacement to the displacement body. The displacement body has a shape in which an urging force in a direction in which the urging member resists the displacement increases as a displacement amount increases .

  Therefore, in the present invention, when the ceiling of a room, hallway, hall or the like rolls due to shaking of a building or the like, the support member rolls, but the displacement body supported by the support member is attached to the biasing member. Holds almost a fixed position by its own inertia against the forces. Therefore, the luminaire hung on the displacement body via the hanging cord also maintains a substantially fixed position. For this reason, a lighting fixture hardly shakes and can prevent damage to a lighting fixture, a wall of a room, etc.

  The said structure WHEREIN: The said displacement body is good to be able to displace to a horizontal direction with respect to the said supporting member.

The said structure WHEREIN: The said displacement body is good in the structure which has a spherical-shaped convex lower surface.
In the above-described configuration, the biasing member is a conical coil spring, and a large diameter side thereof is attached to the base portion or the support member, and a small diameter side thereof is preferably attached to the displacement body.

  According to the hanging device for a lighting fixture of the present invention, it is possible to effectively suppress the shaking of the lighting fixture due to the shaking of a building or the like.

The front view which shows the suspending device of the lighting fixture of 1st Embodiment. The disassembled perspective view which shows a suspending apparatus. Sectional drawing which shows a suspending apparatus. Sectional drawing which shows the operating state of a suspending apparatus. The disassembled perspective view which shows the suspending device of the lighting fixture of 2nd Embodiment. Sectional drawing which shows a suspending apparatus. Sectional drawing which shows the operating state of a suspending apparatus. (A) is a front view which shows the conventional suspension apparatus, (b) is a schematic diagram which shows the operating state of a suspension apparatus.

(First embodiment)
Next, a first embodiment of a lighting device suspending device embodying the present invention will be described with reference to FIGS.

  As shown in FIG. 1, a hanging apparatus 10 for a lighting fixture according to this embodiment is installed on a ceiling C in a room, a hallway, a hall or the like of a building or a ship, and the lighting fixture L is connected via a hanging cord W. To support. As shown in FIGS. 2 and 3, the suspension device 10 includes a substrate 11 fixed to the upper surface of the ceiling C, and an opening 11 a for passing the suspension cord W is provided at the center of the substrate 11. Is formed.

  A synthetic resin supporting member 12 having a cylindrical shape as a whole is fixed on the substrate 11, and a disc-shaped synthetic resin displacement body 13 is formed on the peripheral edge of the upper opening of the supporting member 12. It is supported. As shown in FIG. 3, the displacement body 13 can be displaced in all horizontal directions from an initial position indicated by a solid line. A convex portion 14 is formed at the center of the displacement body 13 downward. A hole 14a is passed through the convex portion 14 in the vertical direction, and a suspended cord W is fixed to the hole 14a in an inserted state.

  A conical coil spring 15 as an urging member is disposed inside the support member 12 on the substrate 11. The large diameter portion at the lower end of the conical coil spring 15 is fitted into the inner lower portion of the support member 12, and the upper small diameter portion is fitted onto the convex portion 14 of the displacement body 13.

Next, the operation of the lighting device suspending device of the first embodiment configured as described above will be described.
When the ceiling portion C rolls due to shaking of a building or the like, as shown in FIG. 4, the support member 12 rolls together with the ceiling portion C, but the displacement body 13 supported on the support member 12 is supported by the support member 12. On the other hand, although it is relatively displaced from the initial position in the horizontal direction in the roll direction, it maintains a substantially fixed position by its own inertia against the urging force of the conical coil spring 15. Accordingly, the lighting fixture L suspended from the displacement body 13 via the suspension cord W also maintains a fixed position. For this reason, even if the ceiling part C rolls, the displacement body 13 and the lighting fixture L hardly displace in the rolling direction, the lighting fixture L does not shake much, and damage to the walls of the lighting fixture or the room. Is prevented in advance.

  Next, when the ceiling C slowly rolls with a large amplitude due to the long-period vibration, the displacement body 13 resists the urging force of the conical coil spring 15 by the frictional resistance with the support member 12. It rolls with a delay from shaking. Therefore, the roll of the support member 12 is attenuated and transmitted to the displacement body 13, and when the roll direction of the support member 12 is reversed, the roll of the displacement body 13 is canceled. For this reason, the rolling of the hanging cord W is suppressed, and the lighting fixture L does not shake much.

  In order to effectively cancel the roll of the hanging cord W and the lighting fixture L, the spring force in the vertical direction of the conical coil spring 15 is adjusted according to the weight of the lighting fixture L and the like, and the support member 12 and the displacement body 13 are adjusted. The frictional resistance between the two may be set to an appropriate size. That is, if the upward spring force of the conical coil spring 15 is increased, the frictional resistance between the support member 12 and the displacement body 13 is reduced, and conversely the spring force of the conical coil spring 15 upward in the vertical direction. Is weakened, the frictional resistance between the support member 12 and the displacement body 13 increases.

As described above, in both cases where the building or the like shakes in small increments or greatly shakes, the lighting fixture L can be prevented from shaking.
This embodiment described in detail below has the following effects.

  (1) In the hanging device for a lighting fixture of this embodiment, the displacement body 13 on which the lighting fixture L is suspended via the hanging cord W is displaced in the horizontal direction on the support member 12 fixed to the ceiling portion C. Supported as possible. Further, a conical coil spring 15 is provided between the support member 12 and the displacement body 13 to apply an urging force against the displacement to the displacement body 13. Therefore, when the ceiling portion C swings in small increments, the displacement body 13 holds a substantially fixed position due to inertia with respect to the support member 12, and when the ceiling portion C swings greatly, the displacement body 13 is delayed with respect to the support member 12. The energy is attenuated or the shaking is canceled as it tries to shake. As a result, it is possible to effectively suppress the shaking of the lighting fixture L due to the rolling of the ceiling portion C.

  (2) The conical coil spring 15 having the large diameter side attached to the support member 12 and the small diameter side attached to the displacement body 13 enables the displacement body 13 to be displaced even in a roll in all directions. Therefore, regardless of the rolling direction of the building or the like, it is possible to effectively suppress the lighting device L from shaking.

(Second Embodiment)
Next, a second embodiment embodying the present invention will be described with reference to FIGS. In addition, about the same structure as 1st Embodiment, the code | symbol is made the same, the description is abbreviate | omitted, and it demonstrates centering around a structure and effect | action different from 1st Embodiment.

  As shown in FIGS. 5 and 6, the displacement body 13 of this embodiment is formed in a bowl shape having a spherical convex lower surface 13 b and is supported on the peripheral edge of the upper opening of the support member 12. And the displacement body 13 can be displaced to all directions along the circular track | orbit which follows the convex-shaped lower surface 13b, as shown with a dashed-two dotted line in FIG.

  Next, in the hanging device for a lighting fixture according to the second embodiment configured as described above, the displacement body 13 has an increased inclination angle as the amount of displacement increases, and thus resistance to displacement increases. Therefore, this embodiment not only has the effects (1) and (2) of the first embodiment, but can cope with large shaking even if the diameter of the support member 12 or the displacement body 13 is small.

(Other embodiments)
In addition, this embodiment can also be changed and embodied as follows. That is, in the first or second embodiment, a constricted coil spring is used instead of a constricted coil spring, the large diameter side is attached to the support member 12, and the restrictor side is attached to the displacement body 13. Good.

  C: Ceiling part, L: Lighting fixture, W: Suspension cord, 10 ... Suspension device, 12 ... Support member, 13 ... Displacement body, 13b ... Convex lower surface, 15 ... Conical coil spring as urging member.

Claims (4)

A cylindrical support member fixed to the ceiling,
A displacement body supported so as to be horizontally displaceable at the upper end of the support member in a state in which the lighting fixture is suspended through a suspension cord;
Provided between the displacement body and the support member, and a biasing member for applying a biasing force in the direction against the displacement with respect to the displacement body,
The suspending device for a lighting fixture, wherein the displacement body has a shape in which an urging force of the urging member in a direction against the displacement increases as a displacement amount increases .   The hanging device for a lighting fixture according to claim 1, wherein the displacement body is displaceable in all horizontal directions with respect to the support member.   The suspending device for a lighting fixture according to claim 1 or 2, wherein the displacement body has a spherical convex lower surface. The said biasing member is a conical coil spring, The large diameter side is attached to the said support member, The small diameter side is attached to the said displacement body, The statement to any one of Claims 1-3 characterized by the above-mentioned. A hanging apparatus for a lighting apparatus as described.

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