# US 10,767,847 B2 · Photographic lighting device

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- Number: US 10,767,847 B2
- Document ID: US10767847B2
- Status: Granted
- Kind: B2
- Application number: 16/695,811
- Filed: 2019-11-26
- Published: 2020-03-26
- Granted: 2020-09-08
- Earliest claimed: 2012-06-01
- Assignees: DoPchoice GmbH
- Applicants: Dopchoice GmbH
- Inventors: David Yellin; Ralf Polaczek
- Web page: https://patentgrep.com/patent/US10767847B2

## CPC

- F21V 29/70: characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V 1/06: foldable or collapsible
- F21V 7/16: with provision for adjusting the curvature
- F21V 7/18: with provision for folding or collapsing
- F21V 29/60: characterised by the use of a forced flow of gas, e.g. air
- F21V 29/80: with pins or wires
- F21V 29/81: with pins or wires having different shapes, lengths or spacing
- F21W 2131/406: for theatres, stages or film studios
- F21Y 2105/16: square or rectangular, e.g. for light panels
- F21Y 2115/10: Light-emitting diodes [LED]
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

The application relates to a lighting device, comprising a housing, a planar arrangement of lamps, which are arranged in the housing, and a plate device, which is received on the housing, wherein a housing rear wall is formed by the plate device, the plate device has a circuit board, on which an electric circuit associated with the lamps is arranged, and the plate device has a heat sink device for passive cooling, which is formed by pin-type cooling elements. The application also relates to a headlight.

## Claims

### Claim 1

A device comprising:
a plurality of side walls made of a flexible material, each side wall of the plurality of side walls having a proximal edge and a distal edge opposite to the proximal edge, the plurality of side walls arranged to define an interior space between the plurality of side walls, each side wall being connected to two other side walls of the plurality of side walls at side edges that extend between the proximal and distal edges of the connected side walls;
a plurality of flexible rods, each flexible rod of the plurality of flexible rods being disposed along one side wall of the plurality of side walls and between the side edges of the one side wall, each flexible rod having a first end and a second end that are arranged closer to a distal end of one wall of the plurality of side walls, and a curved middle portion arranged closer to the proximal edge of the same wall of the plurality of side walls;
wherein the device is configured to be fastened to a lamp at the proximal edges of the side walls so that light emitted by the lamp illuminates the interior space between the plurality of side walls.

### Claim 2 (depends on 1)

The device of claim 1, wherein each side wall of the plurality of side walls comprises a first pocket disposed at the distal edge of the side wall and a second pocket disposed at the distal edge of the side wall.

### Claim 3 (depends on 2)

The device of claim 2, wherein the first end of each flexible rod of the plurality of flexible rods is disposed in a first pocket of a side wall of the plurality of side walls along which the each flexible rod is disposed, and the second end of each flexible rod is disposed in a corresponding second pocket of the side wall of the plurality of side walls.

### Claim 4 (depends on 2)

The device of claim 2, wherein each flexible rod of the plurality of flexible rods is held in a tensioned, curved configuration by a first pocket and a second pocket of a side wall of the plurality of side walls.

### Claim 5 (depends on 2)

The device of claim 2, wherein each pocket is made of the same material as the corresponding side wall.

### Claim 6 (depends on 1)

The device of claim 1, wherein the device comprises at least four side walls.

### Claim 7 (depends on 1)

The device of claim 1, wherein the interior space has a generally rectangular cross section.

### Claim 8 (depends on 1)

The device of claim 1, wherein each of the plurality of side walls is made of a textile material.

### Claim 9 (depends on 1)

The device of claim 1, further comprising a lamp mounted to the proximal ends of the plurality of side walls.

### Claim 10 (depends on 1)

The device of claim 1, wherein the device includes the same number of flexible rods as side walls.

### Claim 11 (depends on 1)

The device of claim 1, wherein the proximal end of the interior space defined between the plurality of side walls has essentially the same dimensions as the distal end of the interior space.