# US 10,502,401 B2 · Lighting elevating apparatus

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- Number: US 10,502,401 B2
- Document ID: US10502401B2
- Status: Granted
- Kind: B2
- Application number: 16/093,700
- Filed: 2017-04-17
- Published: 2019-03-14
- Granted: 2019-12-10
- Earliest claimed: 2016-04-21
- Assignees: Isa Co., Ltd.
- Applicants: Isa Co., Ltd.
- Inventors: Kiyoshi Isayama
- Web page: https://patentgrep.com/patent/US10502401B2

## CPC

- F21V 21/16: using wires or cords
- B66D 1/28: Other constructional details
- B66D 1/38: by means of guides movable relative to drum or barrel
- F21S 8/061: {with a non-rigid pendant, i.e. a cable, wire or chain}
- F21V 21/38: with a cable
- F21V 21/36: Hoisting or lowering devices, e.g. for maintenance
- F21W 2131/406: for theatres, stages or film studios
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- B66D: CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS (winding or unwinding ropes or cables for feeding or storage purposes B65H; rope or cable winding or unwinding mechanisms for lifts B66B)
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS

## Abstract

A lighting elevating apparatus includes: a reel coupled to a motor and rotated around an axis of a surface in a short direction of the reel including a reel wire reeling face and being arranged such that its longitudinal direction is in a vertical state; a reel wire to be reeled on the reel wire reeling face; a reeling guide including a reel wire touching part facing the reel wire reeling face and being arranged in parallel to the reel, wherein a distance between the reel wire reeling face and the reel wire touching part is equal or less than a diameter of the reel wire; and a connector attached to an end of the reel wire to connect an object, wherein the reeling guide counter-rotates, and the reel wire passes between the reel wire reeling face and the reel wire touching part.

## Claims

### Claim 1

A lighting elevating apparatus comprising:
a reel including a reel wire reeling face and being arranged such that its longitudinal direction is in a vertical state, wherein the reel is coupled to an electric motor and is rotated around an axis of a surface in a short direction of the reel by the electric motor;
a reel wire to be reeled on the reel wire reeling face by the rotation of the reel;
a reeling guide including a reel wire touching part facing the reel wire reeling face and being arranged in parallel to the reel, wherein a distance between the reel wire reeling face and the reel wire touching part is equal to or less than a diameter of the reel wire; and
a connector attached to an end of the reel wire to connect a to-be-lifted object that is to be suspended below the lighting elevating apparatus, wherein
the reeling guide counter-rotates with respect to the rotation of the reel; and
the reel wire passes between the reel wire reeling face and the reel wire touching part, and is reeled upwardly while being suspended downwardly from the lighting elevating apparatus in a state where gravity force is applied by weight of the reel wire and the to-be-lifted object.

### Claim 2 (depends on 1)

The lighting elevating apparatus according to claim 1, further comprising a guide screw which includes a guide ring facing the reel wire reeling face to guide the reel wire and which is arranged in parallel to the reel, wherein:
the guide screw rotates in conjunction with the rotation of the reel and is inserted through an axial bore of the guide ring; and
the guide ring rotates in conjunction with the rotation of the guide screw and moves vertically along the guide screw so as to face a topmost part of the reel wire which has been reeled on the reel wire reeling face.

### Claim 3 (depends on 1)

The lighting elevating apparatus according to claim 1, further comprising a guide screw which includes a reel wire fixing part and a guide block which face the reel wire reeling face and which are arranged in parallel to the reel, wherein:
the reel wire fixing part is arranged below the guide screw and faces a lower part of the reel wire reeling face in the longitudinal direction;
the guide screw rotates in conjunction with the rotation of the reel and is inserted through an axial bore of the guide block;
the guide block moves vertically in conjunction with the rotation of the guide screw along the guide screw;
a distance between the reel wire reeling face and the reel wire fixing part is less than a diameter of the reel wire; and
the reel wire passes, when reeled on the reel wire reeling face, between the reel wire fixing part and the guide block and is guided in an upward direction of the reel wire reeling face.

### Claim 4 (depends on 1)

The lighting elevating apparatus according to claim 1, further comprising a column which faces the reel wire reeling face and which is arranged in parallel to the reel, wherein
a distance between the reel wire reeling face and the column is equal to or larger than the diameter of the reel wire and is less than twice the diameter of the reel wire.

### Claim 5 (depends on 1)

The lighting elevating apparatus according to claim 1, further comprising a clutch which is arranged below the reel and which is rotated by touching the reel wire, wherein:
the reel wire is guided below the lighting elevating apparatus along the clutch; and
the clutch:
rotates along with the movement of the reel wire when the reel wire is unreeled from the reel wire reeling face; and
does not rotate along with the movement of the reel wire when the reel wire is reeled on the reel wire reeling face.