JPS617501A - Lift for lighting fixture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lifting device for lighting equipment used in stages, television studios, and the like.

Conventionally, as a device of this kind, for example, ``Fran Patent No. 2
What is shown in the specification of No. 401095 has been proposed. This device uses multiple flexible cables and a winding device that winds up the flexible cables to raise and lower the lighting fixture, and the position of the lighting fixture can be changed up and down, making it possible to use a wide variety of types of lighting. In addition to being effective, inspection and replacement of lighting equipment is easy. However, in this case, when the elevating section swings in the horizontal direction, the flexible cable sag bends, and as a result, the flexible cable sag comes off the guide pulley 9 winding device, etc., and the load on the multiple flexible cables is The disadvantage was that it became unbalanced and damaged the flexible cables. Furthermore, it is clear that increasing the strength of the flexible cables will increase the cost.

The present invention has been made to eliminate these drawbacks, and is designed to prevent the flexible cable from bending and coming off, and to prevent the load from being applied unbalancedly even when the elevating section sways.
The object of the present invention is to provide a safe and inexpensive lifting device for lighting equipment.

The present invention provides a rotating member whose intermediate portion is supported rotatably on a parallel surface on the fixed part side 1:' of the flexible cable that moves up and down the lifting part among the base part and the lifting part, A pair of flexible cables are fixed to each of both ends of the rotating member (from -, the unbalanced load that is about to be applied is absorbed by the rotating member. That is.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 4. (1) is a rotating part, which is supported by, for example, a lattice body (2) provided on a ceiling (not shown).
It has a cylindrical vertical member (3) supported rotatably, for example, by 180°, and a rectangular parallelepiped horizontal member (4) provided at the lower end of the cylindrical vertical member (3).

(5) is an electric motor for rotating the rotating part (1);
6) is a speed reducer for this electric motor (5). (7) is an elevating part that can be moved up and down with respect to the rotating part (1), and has a lighting equipment mounting part (8). Further, the elevating portion (7) includes, for example, a rectangular parallelepiped-shaped frame (9).
9) Power is supplied to the lighting fixture (not shown) provided above (one body α1 with an arcuate bottom surface and the lighting fixture (not shown) provided at the lower end of the frame body (9) and mounted on the lighting fixture mounting portion (8). The wiring gutter U has a wiring gutter U for connecting, for example, a plurality of electrode parts a, (LS, . . .
··have. The lighting fixture mounting part (8) is formed, for example, by an expandable pipe, but is not limited to this.

(13, (13 is a rotating member, and in this embodiment, it is provided on both shelf surfaces in the longitudinal direction of the horizontal member (4) in the rotating part (1). (13
The intermediate part is supported so as to be rotatable along the plane. For example, each rotating member U3. A3 consists of elliptical plates (18a) and (18b), and these plates (18a).

(18b) are connected to each other at their intermediate portions at intervals, and are pivotally supported at the intermediate portions. B, (n), . . . are flexible ropes, and in this embodiment, four of them are used, and one end of each of these flexible ropes tta, a4), . (to), u3 is connected to each end of c+, s, (
It is fixed via ls, . That is, one end of the connecting sparrow (IQ, (to), . . . is a flexible rope H,
(14) , . . . are connected to one end, and the other end is screwed between the plates (13a) and (18b). The flexible cables I, α, ... are for lowering and lowering the elevating section (7) in a row, and the other end of each of the flexible cables I, α,... This winding device gal 19 is wound up by, for example, the frame body (
9), which is placed on a winding drum having four winding grooves, an electric motor part for rotating this winding drum (L?), and a speed reducer for this electric motor. be. C2+1. (2G.

. . . represents each of the flexible ropes α4. (14, . . . ).In this embodiment, one end of the flexible rope (14), (14), . ), and the elevating part (7) (two-winding device (6)
), but the present invention also includes the opposite case. In this case, it goes without saying that the rotating member +1'jI, 03 is provided in the elevating part (7).

(21), (2υ is a cable, for example, a round multi-core cable made up of a plurality of conducting wires. One end is connected to a power source or other device (both not shown), and once fixed on both sides below the electric motor (5). After that, the other end of the cable is wound around a cylindrical vertical member (3) and connected to a relay terminal box placed on a horizontal member (4).These cables 0υ,
Because it is wrapped around the cylindrical vertical member (3), it will not bend or be forcibly pulled even when the rotating part (1) rotates. Another cable (c), for example, one end of a flat multicore cable, is connected to the relay terminal on the horizontal member (4), and this cable (c)
passes through the horizontal member (4), is placed on the frame (9) in the lifting section, and is connected at the other end to the sword-interrupted terminal box (c).

The wiring gutter 01 is connected to the terminal box (2) of this lifting section (7).
) and the winding device holder, and are configured to supply power to each. Also, the same body (IQ has an arcuate bottom surface, so it can absorb the bent part of the cable and stack it almost horizontally. In the lifting device configured as above 9, the winding device flf9 is controlled from the operation room or the like, and the flexible cable 04], (14).

By winding up or unwinding..., the elevating part (which can raise and lower the force) can also rotate the movable rotating part (1). Therefore, the lighting fixture can be moved vertically and horizontally. It can be placed over a wide range of areas and provides a wide variety of lighting effects.In addition, the lighting equipment can be inspected.

It is easy to replace. Then, an unbalanced load is applied to the elevating part (the flexible rope 04 due to the force fluctuation), α leakage, etc. when the force is raised or lowered or when the rotating part (1) rotates, etc. Then, since the rotating member t1.1.(13) rotates on the creeping plane, the unbalanced load can be absorbed, and the flexible ropes (2), (14), etc. are bent and the pulley This prevents the cable from coming off the fence, etc., and from applying an excessive load to the flexible cables α4), 14),..., the fixing portions of the flexible cables, and other members. Therefore, there is no need to increase the strength of each member and prevent the lifting part from falling.

Note that the present invention is not limited to the above embodiments. For example, the rotating part and the elevating part may be configured in a manner other than the above-described embodiment, such that they can be driven manually in an emergency such as a power outage. Furthermore, the number of flexible cables and rotating members is determined by the load or the shape of the lifting section, etc.
It is not limited to the above embodiment. Furthermore, the shape of the rotating member may be arbitrarily formed such as an oval shape or a triangular shape.

As described in detail above, the present invention provides a rotating member whose intermediate portion is supported so as to be rotatable on a longitudinal plane on the fixed portion side of a flexible cable, and a pair of flexible cables at both ends of the rotating member. Since one end of the flexible rope is fixed, even if an unbalanced load is applied to the pair of flexible ropes due to shaking of the lifting section, this can be absorbed by the rotation of the rotating member. Therefore, it is possible to prevent the flexible cable from bending and coming off, and to prevent excessive loads from acting on the flexible cable, etc., so there is no risk of the lifting section falling, etc., and members such as the flexible cable, etc. It is possible to provide a safe and inexpensive lifting device for lighting equipment without increasing the fixing strength more than necessary.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view, FIG. 8 is a front view of the main parts, and FIG. 4 is a top view. (1)... Rotating part (Force... Lifting part (8)
...Lighting equipment attachment part t13), Q3)...Rotating member α4), u4)...Flexible rope (ib...
Winding device λ 1-UoZ Tomoe, 3-cho 4 Yen 2, Name of the invention Relationship to the case Patent applicant 1-4-28 Mita, Minato-ku, Tokyo "-IC Desirei (375) ) Representative of Toshiba Electric Materials Co., Ltd.
Lead Address: 5, Toshiba Electric Materials Corporation, Horiyo-cho Plant, 72 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa 210, ? Is Ming ID's Taisui quote from the M-positive subject mocking 6? +HE contents--4--°,,-,1

Claims (4)

[Claims] (1) A rotating part that is rotatably supported on the ceiling, an elevating part that has a lighting fixture mounting part and is movable up and down with respect to the rotating part, and either of the rotating part or the elevating part. a rotating member whose intermediate portion is supported on one side so as to be freely rotatable on a creeping surface; a pair of flexible cables having one end fixed to each of both ends of the rotating member; and a winding device provided on the other side of the lifting section and suspending the lifting section so as to be able to rise and fall by winding or unwinding the other end of the flexible cable. Lifting device for lighting equipment. (2) The rotating part includes a cylindrical vertical member rotatably supported on the ceiling, and a rectangular horizontal member provided at the lower end of the cylindrical vertical member. A lifting device for a lighting fixture according to claim (1). (3) The lifting device for a lighting fixture according to claim (2), wherein the rotating member is supported by both shelf surfaces in the longitudinal direction of the horizontal member. (4) The lifting device for a lighting fixture according to any one of claims (1) to (3), wherein the rotating member has an elliptical shape.