# US 2014/0191668 A1 · Retractable lighting fixture

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- Number: US 2014/0191668 A1
- Document ID: US20140191668A1
- Status: Published application
- Kind: A1
- Application number: 14/237,775
- Filed: 2012-07-30
- Published: 2014-07-10
- Earliest claimed: 2011-08-10
- Assignees: Koninklijke Philips N.V.
- Inventors: Dirk Valentinus René Engelen; Anthonie Hendrik Bergman; Tim Dekker; Bram Knaapen; Bartel Marinus Van De Sluis; Jochen Renaat Van Gheluwe
- Web page: https://patentgrep.com/patent/US20140191668A1

## CPC

- E04F 10/06: comprising a roller-blind with means for holding the end away from a building
- E06B 9/24: Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00)
- E06B 9/40: Roller blinds (usable only as awnings E04F10/06)
- F21V 5/02: of prismatic shape (F21V5/04 takes precedence)
- F21V 9/30: Elements containing photoluminescent material distinct from or spaced from the light source (shades F21V1/17; globes, bowls or cover glasses F21V3/08, F21V3/12; refractors F21V5/10; reflectors F21V7/26, F21V7/30; elements with provision for controlling the spectral properties or intensity F21V9/40)
- F21V 9/45: by adjustment of photoluminescent elements
- F21V 13/08: the elements being filters or photoluminescent elements and reflectors
- F21V 21/14: Adjustable mountings
- F21V 23/0492: {the sensor detecting a change in orientation, a movement or an acceleration of the lighting device, e.g. a tilt switch}
- F21V 33/006: {General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols}
- H05B 45/00: Circuit arrangements for operating light-emitting diodes [LED]
- E04F 10/0611: {with articulated arms supporting the movable end of the blind for deployment of the blind}
- E06B 2009/2458: {moving simultaneously}
- E06B 2009/247: {Electrically powered illumination}
- E06B 2009/2643: {Screens between double windows}
- F21V 14/006: {by means of optical elements, e.g. films, filters or screens, being rolled up around a roller}
- F21V 15/012: {Housings with variable shape or dimensions, e.g. by means of elastically deformable materials or by movement of parts forming telescopic extensions of the housing body}
- F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements
- F21Y 2107/90: on two opposite sides of supports or substrates
- F21Y 2115/10: Light-emitting diodes [LED]
- H05B 44/00: Circuit arrangements for operating electroluminescent light sources (for operating light emitting diodes H05B45/00)
- E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B)
- E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00)
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- 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

Disclosed is a retractable lighting fixture having a retractable LED lighting layer. One or more optical layers (40, 240A/B, 340A/B, 440) may optionally be provided over the LED lighting layer (30, 230, 330, 430). The optical layer(s) and the LED lighting layer may optionally be movable relative to one another between at least being in an expanded spaced relation to one another and a compressed relation to one another. One or more LEDs (34, 134, 234A/B, 334A/B, 434) on the LED lighting layer may be individually controllable and such LEDs (34, 134, 234A/B, 334A/B, 434) may be selectively extinguished when they are in a retracted position.

## Claims

### Claim 1

A retractable lighting fixture, comprising:
alighting fixture housing;
a flexible multilayer lighting sheet retractably retainable within said lighting fixture housing, said multilayer lighting sheet movable between a retracted position at least partially retracted within said lighting fixture housing and an extended position more protracted from said lighting fixture housing than said retracted position; said multilayer lighting sheet having a LED layer and an optical layer over said LED layer, said LED layer including a plurality of LEDs selectively generating a light output, said optical layer intersecting and transmitting at least some of said light output;
wherein portions of said LED layer and said optical layer are in an expanded spaced relation to one another when in said extended position and in a compressed relation to one another when in said retracted position; and
wherein the distance between said LED layer and said optical layer in said expanded spaced relation is at least two times the distance between said LED layer and said optical layer in said compressed relation.

### Claim 2 (depends on 1)

The retractable lighting fixture of claim 1, wherein said LED layer and said optical layer are in contact in said compressed relation.

### Claim 3 (depends on 1)

The retractable lighting fixture of claim 1, wherein the distance between said LED layer and said optical layer in said expanded spaced relation is at least four times the distance between said LED layer and said optical layer in said compressed relation.

### Claim 4 (depends on 1)

The retractable lighting fixture of claim 1, further comprising a plurality of resiliently expandable and contractible structures interposed between said LED layer and said optical layer, said structures in a biased expanded state when portions of said LED layer and said optical layer adjacent thereto are in said expanded spaced relation to one another.

### Claim 5 (depends on 4)

The retractable lighting fixture of claim 4, wherein said structures include foam bars.

### Claim 6 (depends on 1)

The retractable lighting fixture of claim 1, further comprising a mandrel within said retracted lighting fixture housing, said multilayer lighting sheet coupled to said mandrel and rotated therearound in said retracted position.

### Claim 7 (depends on 1)

The retractable lighting fixture of claim 1, further comprising a pair of rollers proximal an entrance to said retracted lighting fixture housing, said rollers flanking and contacting said multilayer lighting sheet when said LED layer and said optical layer are moving from said extended position to said retracted position.

### Claim 8 (depends on 1)

The retractable lighting fixture of claim 1, wherein said optical layer includes a phosphor,

### Claim 9 (depends on 1)

The retractable lighting fixture of claim 1, wherein said multilayer lighting sheet further includes a reflecting layer over said LED layer on an opposite side of said LED layer than said optical layer.

### Claim 10 (depends on 9)

The retractable lighting fixture of claim 9, wherein said light output of some of said LEDs is primarily directed at said reflecting layer.

### Claim 11

A retractable lighting fixture, comprising:
alighting fixture housing;
a flexible multilayer lighting sheet retractably retainable within said lighting fixture housing, said multilayer lighting sheet movable between a retracted position at least partially retracted within said lighting fixture housing and an extended position protracted from said lighting fixture housing more than said retracted position; said multilayer lighting sheet having a LED layer and a diffusing optical layer over the LED layer;
wherein portions of said LED layer and said optical layer are in an expanded spaced relation to one another when in said extended position and in a compressed relation to one another when in said retracted position; and a plurality of resilient interspacing structures interposed between said LED layer and said optical layer, said interspacing structures in an expanded state when said LED layer and said optical layer adjacent thereto are in said expanded spaced relation and in a contracted state when said LED layer and said optical layer adjacent thereto are in said compressed relation.

### Claim 12 (depends on 11)

The retractable lighting fixture of claim 11, wherein said LED layer and said optical layer are in contact in said compressed relation.

### Claim 13 (depends on 11)

The retractable lighting fixture of claim 11, wherein the distance between said LED layer and said optical layer in said expanded spaced relation is at least three times the distance between said LED layer and said optical layer in said compressed relation.

### Claim 14 (depends on 11)

The retractable lighting fixture of claim 11, wherein said interspacing structures are non-biased.

### Claim 15 (depends on 11)

The retractable lighting fixture of claim 11, wherein said interspacing structures include springs.

### Claim 16 (depends on 11)

The retractable lighting fixture of claim 11, wherein said multilayer lighting sheet includes a diffusing second optical layer over the LED layer, said second optical layer on an opposite side of said LED layer than said optical layer.

### Claim 17 (depends on 16)

The retractable lighting fixture of claim 16, wherein portions of said LED layer and said second optical layer are in a second optical layer expanded spaced relation to one another when in said extended position and in a second optical layer compressed relation to one another when in said retracted position.

### Claim 18 (depends on 17)

The retractable lighting fixture of claim 17, wherein said LED layer includes LEDs on each side thereof.

### Claim 19 (depends on 11)

The retractable lighting fixture of claim 11, further comprising a mandrel within said retracted lighting fixture housing 24, said multilayer lighting sheet coupled to said mandrel and rotated therearound in said retracted position.

### Claim 20 (depends on 19)

The retractable lighting fixture of claim 19, further comprising a pair of rollers proximal an entrance to said retracted lighting fixture housing, said rollers flanking and contacting said multilayer lighting sheet when said LED layer and said optical layer are moving from said extended position to said retracted position.

### Claim at position 21

21-30. (canceled)

### Claim 31

A retractable lighting fixture, comprising:
a housing;
a flexible LED lighting sheet retractably retainable within said housing, said LED lighting sheet movable between a retracted position at least partially retracted within said lighting fixture housing and an extended position protracted from said lighting fixture housing more than said retracted position; said LED lighting sheet having a plurality of LEDs selectively electrically connected to a power supply; said LEDs electrically connected in a plurality of distinct individually actuable groups, each of said groups including at least a single of said LEDs and lightable and extinguishable independently of other of said groups;
a controller in electrical communication with each of said groups and selectively lighting and extinguishing each of said groups;
wherein said controller causes each of said groups to be extinguished when said LEDs associated therewith are retracted within said lighting fixture housing.

### Claim 32 (depends on 31)

The retractable lighting fixture of claim 31, wherein said controller is in electrical communication with a plurality of switches, each of said switches interfacing with one of said groups.

### Claim 33 (depends on 32)

The retractable lighting fixture of claim 32, wherein said switches are opened when said LEDs associated therewith are extinguished.

### Claim 34 (depends on 31)

The retractable lighting fixture of claim 31, further comprising at least one sensor in electrical communication with said controller, said sensor sensing the position of said LED lighting sheet.

### Claim 35 (depends on 34)

The retractable lighting fixture of claim 34, wherein said sensor includes a hall effect sensor.

### Claim 36 (depends on 34)

The retractable lighting fixture of claim 34, wherein said sensor includes a plurality of photo sensors coupled to said LED lighting sheet.

### Claim 37 (depends on 35)

The retractable lighting fixture of claim 35, further comprising a mandrel within said retracted lighting fixture housing, said LED lighting sheet coupled to said mandrel and rotated therearound in said retracted position, wherein said hall effect sensor senses revolutions of said mandrel.

### Claim 38 (depends on 31)

The retractable lighting fixture of claim 31, further comprising a mandrel within said retracted lighting fixture housing, said LED lighting sheet coupled to said mandrel and rotated therearound in said retracted position, wherein said controller controls revolutions of said mandrel and selectively extinguishes each of said groups based on said revolutions.

### Claim at position 30

39-48. (canceled)