# US 2014/0153227 A1 · Fixtures for large area directional and isotropic solid state lighting panels

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- Number: US 2014/0153227 A1
- Document ID: US20140153227A1
- Status: Published application
- Kind: A1
- Application number: 14/020,892
- Filed: 2013-09-08
- Published: 2014-06-05
- Earliest claimed: 2008-03-01
- Assignees: Goldeneye, Inc.
- Inventors: Scott M. Zimmerman; Karl W. Beeson; William R. Livesay; Richard L. Ross
- Web page: https://patentgrep.com/patent/US20140153227A1

## CPC

- F21V 13/08: the elements being filters or photoluminescent elements and reflectors
- F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- F21K 9/68: Details of reflectors forming part of the light source
- F21S 9/02: the power supply being a battery or accumulator
- F21S 9/03: rechargeable by exposure to light
- F21V 9/08: for producing coloured light, e.g. monochromatic; for reducing intensity of light (with provision for controlling the colour F21V9/40)
- F21V 21/096: Magnetic devices
- F21V 29/505: of reflectors
- F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes
- H10H 20/8515: {not being in contact with the bodies}
- F21V 29/51: using condensation or evaporation of a fluid, e.g. heat pipes
- F21V 29/54: using thermoelectric means, e.g. Peltier elements
- H10H 20/856: Reflecting means
- H10H 20/8582: {characterised by their shape}
- H10H 20/8586: {comprising fluids, e.g. heat-pipes}
- Y02B 10/10: Photovoltaic [PV]
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

Reflector designs for a large area panel light source create induced draft cooling means adjacent to the panel light source. The panel light source has a wavelength conversion element on a solid state light source for emitting light of a first and second wavelength to form a broader emission spectrum of light from the panel light source.

## Claims

### Claim 1

A light fixture comprising:
at least one reflector, and
a directional light source having a solid wavelength conversion element on a solid state light source, said solid state light source having a reflecting layer opposite said solid wavelength conversion element such that said solid state light source emits light of a first wavelength through said solid wavelength conversion element or reflected from said reflecting layer through said solid wavelength conversion element, said solid wavelength conversion element converting a portion of said light of a first wavelength into light of a second wavelength, said second wavelength being different from said first wavelength, said light of a first wavelength and said light of a second wavelength being transmitted from said solid wavelength conversion element to form a broader emission spectrum of light from said directional light source to be reflected and directed by said at least one reflector.

### Claim 2 (depends on 1)

The light fixture of claim 1 wherein said at least one reflector is separated from said directional light source to provide an induced draft cooling means for said directional light source.

### Claim 3 (depends on 1)

The light fixture of claim 1 wherein said broader emission spectrum of light from said directional light source is reflected and directed by said at least one reflector to form a wall washing effect.

### Claim 4

A light fixture comprising:
a first reflector and a second reflector, and
an isotropic light source having a first solid wavelength conversion element on a first side of a solid state light source, and a second solid wavelength conversion element on a second side of said solid state light source, said second side being opposite said first side,
wherein said solid state light source emits light of a first wavelength through said first solid wavelength conversion element converting a portion of said light of a first wavelength into light of a second wavelength, said second wavelength being different from said first wavelength, said light of a first wavelength and said light of a second wavelength being transmitted from said first solid wavelength conversion element to form a broader emission spectrum of light from said isotropic light source to be reflected and directed by said first reflector,
wherein said solid state light source emits light of a first wavelength through said second solid wavelength conversion element converting a portion of said light of a first wavelength into light of a second wavelength, said second wavelength being different from said first wavelength, said light of a first wavelength and said light of a second wavelength being transmitted from said second solid wavelength conversion element to form a broader emission spectrum of light from said isotropic light source to be reflected and directed by said second reflector, and
said first reflector and said second reflector forming a trough reflector to reflect and direct said broader emission spectrum of light from said isotropic light source.

### Claim 5 (depends on 4)

The light fixture of claim 4 wherein said first reflector is separated from said isotropic light source and said second reflector is separated from said isotropic light source to provide an induced draft cooling means for said isotropic light source.

### Claim 6

A directional light source for a light fixture comprising:
a curved solid wavelength conversion element on a curved solid state light source, said curved solid state light source having a curved reflecting layer opposite said curved solid wavelength conversion element such that said curved solid state light source emits light of a first wavelength through said curved solid wavelength conversion element or reflected from said curved reflecting layer through said curved solid wavelength conversion element, said curved solid wavelength conversion element converting a portion of said light of a first wavelength into light of a second wavelength, said second wavelength being different from said first wavelength, said light of a first wavelength and said light of a second wavelength being transmitted from said curved solid wavelength conversion element to form a broader emission spectrum of light from said curved directional light source.

### Claim 7

An isotropic light source for a light fixture comprising:
a first curved solid wavelength conversion element on a first side of a curved solid state light source, and a second curved solid wavelength conversion element on a second side of said solid state light source, said second side being opposite said first side,
wherein said curved solid state light source emits light of a first wavelength through said first curved solid wavelength conversion element converting a portion of said light of a first wavelength into light of a second wavelength, said second wavelength being different from said first wavelength, said light of a first wavelength and said light of a second wavelength being transmitted from said first curved solid wavelength conversion element to form a broader emission spectrum of light from said isotropic light source, and
wherein said curved solid state light source emits light of a first wavelength through said second curved solid wavelength conversion element converting a portion of said light of a first wavelength into light of a second wavelength, said second wavelength being different from said first wavelength, said light of a first wavelength and said light of a second wavelength being transmitted from said second curved solid wavelength conversion element to form a broader emission spectrum of light from said isotropic light source.

### Claim 8

A light fixture comprising:
a light source having a first contact and a second contact,
a first fixture contact and a second fixture contact,
a first magnetic element and a second magnetic element,
wherein said first magnetic element magnetically attracts said first contact of said light source to physically contact and electrically connect said first fixture contact and wherein said second magnetic element magnetically attracts said second contact of said light source to physically contact and electrically connect said second fixture contact.

### Claim 9

A light source for a light fixture comprising:
a solar cell conversion means for converting sunlight or external light into electricity,
an energy storage means, said solar conversion means being on said energy storage means, said energy storage means for storing said electricity from said solar cell conversion means, and
a panel light source, said energy storage means being on said panel light source, said panel light source receiving electricity from said energy storage means and emitting light.

### Claim 10 (depends on 9)

The light source for a light fixture of claim 9 wherein said panel light source has at least one solid wavelength conversion element on a solid state light source, such that said solid state light source emits light of a first wavelength through said at least one solid wavelength conversion element, said at least one solid wavelength conversion element converting a portion of said light of a first wavelength into light of a second wavelength, said second wavelength being different from said first wavelength, said light of a first wavelength and said light of a second wavelength being transmitted from said at least one solid wavelength conversion element to form a broader emission spectrum of light from said panel light source.

### Claim 11 (depends on 10)

The light source for a light fixture of claim 10 wherein the panel light source has a plurality of solid state light sources and two wavelength conversion elements mounted on opposite sides of and in thermal contact with the plurality of solid state light sources to form a sandwich-like structure, such that the plurality of solid state light sources have a combined cross-sectional area substantially less than either of the wavelength conversion elements; and light from the plurality of solid state light sources is emitted primarily in two opposite directions, through the respective wavelength conversion elements.

### Claim 12 (depends on 9)

The light source for a light fixture of claim 9, wherein the at least one solid state light source includes at least one inorganic light emitting diode.

### Claim 13 (depends on 12)

The light source for a light fixture of claim 12 wherein the at least one inorganic light emitting diode includes an epitaxial structure of a first type, having a plurality of layers of gallium nitride (GaN) based semiconductor materials.

### Claim 14 (depends on 13)

The light source for a light fixture of claim 13 wherein the at least one inorganic light emitting diode includes an epitaxial structure of the first type having at least one semiconducting layer of indium gallium nitride (InGaN).

### Claim 15 (depends on 14)

The light source for a light fixture of claim 14 wherein the at least one solid state light source includes at least one additional inorganic light emitting diode formed as an epitaxial structure of a second type, and having at least one semiconducting layer of aluminum indium gallium phosphide (AlInGaP), and wherein the additional inorganic light emitting diode propagates light of a third wavelength different from the first and second wavelengths, whereby light at the first, second and third wavelengths contribute to the desired spectral content of light emitted from the panel light source.