Fixtures for large area directional and isotropic solid state lighting panels

• US 20090217970A1
• Filed: 02/27/2009
• Published: 09/03/2009
• Est. Priority Date: 03/01/2008
• Status: Active Grant

• Current Assignee: Goldeneye, Inc.
• Original Assignee: Goldeneye, Inc.
• Inventors: Livesay, William R., Beeson, Karl W., Zimmerman, Scott M., Ross, Richard L.
• Granted Patent: US 8,558,438 B2
• Time in Patent Office: Days
• US Class Current: 136/252
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21S 9/02 the power supply being a battery or accumulator
• CPC Class Codes: F21S 9/03 rechargeable by exposure to light
• CPC Class Codes: F21V 13/08 the elements being filters or photoluminescent elements and reflectors
• CPC Class Codes: F21V 21/096 Magnetic devices
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• CPC Class Codes: F21V 29/54 using thermoelectric means, e.g. Peltier elements
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 33/507 the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
• CPC Class Codes: H01L 33/60 Reflective elements
• CPC Class Codes: H01L 33/642 characterized by the shape
• CPC Class Codes: H01L 33/648 the elements comprising fluids, e.g. heat-pipes
• CPC Class Codes: Y02B 10/10 Photovoltaic [PV]

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

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.

2. 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.

3. 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.

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.

5. 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.

6. A directional light source for a light fixture having 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.

7. An isotropic light source for a light fixture having 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.

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.

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.

10. 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.