LED LIGHTING METHODS AND APPARATUS

• US 20170167718A1
• Filed: 01/19/2016
• Published: 06/15/2017
• Est. Priority Date: 12/15/2015
• Status: Active Grant

• Current Assignee: Wangs Alliance Corporation
• Original Assignee: Wangs Alliance Corporation
• Inventors: Erdener, Basar, Puvanakijjakorn, Voravit
• Granted Patent: US 10,323,832 B2
• Time in Patent Office: Days
• CPC Class Codes: F21S 8/081 of low-built type, e.g. landscape light
• CPC Class Codes: F21V 14/06 by movement of refractors in vehicle head lamps F21S41/635
• CPC Class Codes: F21V 17/101 permanently, e.g. welding, gluing or riveting
• CPC Class Codes: F21V 17/12 by screwing
• CPC Class Codes: F21V 17/168 the parts being resilient rings acting substantially isotropically, e.g. split rings
• CPC Class Codes: F21V 19/0015 Fastening arrangements intended to retain light sources
• CPC Class Codes: F21V 19/02 with provision for adjustment, e.g. for focusing
• CPC Class Codes: F21V 21/26 Pivoted arms
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 23/007 enclosed in a casing
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21V 31/03 with provision for venting for vehicle head lights F21S45/33; for vehicle rear lights F21S41/192
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21V 9/00 Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters coloured shades F21V1/00; elements characterised by cooling arrangements F21V29/502
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 45/14 using electrical feedback from LEDs or from LED modules
• CPC Class Codes: H05B 45/37 : Converter circuits
• CPC Class Codes: H05B 45/3725 : Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/38 : using boost topology
• CPC Class Codes: H05B 45/50 : responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H05B 47/24 : Circuit arrangements for protecting against overvoltage
• CPC Class Codes: H05B 47/25 : Circuit arrangements for protecting against overcurrent
• CPC Class Codes: Y02B 20/30 : Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

Claims

1. An LED light base assembly, comprising:

a driver housing including a base portion including a control knob opening in a wall of the base portion;

an LED driver assembly including a potentiometer;

a seal; and

a dimming control knob including a shaft portion, said seal being positioned between a rear side of said dimming knob and a surface of said wall of the base portion of the driver housing, said shaft of said dimming control knob being in physical contact with a rotatable control of said potentiometer, said seal providing a water tight seal between the dimming control knob and the surface of said wall of the base portion of the driver housing.

2. The LED light base assembly of claim 1, wherein said LED light base portion includes a top portion including a flat surface, said flat surface including a top opening through which at least a first wire extends, said first wire being coupled to said LED driver assembly;

and

wherein the LED light base assembly further includes;

a top gasket through which said wire extends through said top portion of the driver housing for sealing said top opening.

3. The LED light base assembly of claim 2, further comprising:

an insulating film covering a top portion of said LED driver assembly, said top gasket being positioned between the insulating film and a bottom surface of the top portion of the LED driver housing.

4. The LED light base assembly of claim 3, further comprising:

an enclosure cap inserted into a recess in the bottom of said driver housing; and

a bottom gasket, said bottom gasket being positioned between a top lip of the enclosure cap and a bottom surface of said recess in the bottom of said driver housing.

5. The LED light base assembly of claim 4, wherein said enclosure cap includes a threaded shaft extending from a bottom of said enclosure cap, said threaded shaft including an opening through which at least one light fixture power supply wire extends.

6. The LED light base assembly of claim 5, further comprising:

a sealing glue inserted in the opening in the threaded shaft of the enclosure cap and sealing said opening through which the at least one light fixture power supply wire extends from water entry.

7. The LED light base assembly of claim 6, wherein said sealing glue further fills portions of a cavity in said driver housing in which said LED driver assembly is mounted, said sealing glue providing water proofing of said driver assembly in addition to the water proofing provided by the use of said seal, top gasket and bottom gasket.

8. The LED light base assembly of claim 7, wherein the sealing glue is a silicone material which acts as a potting material for said driver assembly and which stabilizes, secures and waterproofs said driver assembly within the cavity of said driver housing.

9. The LED light base assembly of claim 8, wherein said enclosure cap includes a top threaded portion which is screwed into the driver housing and includes at least one screw hole through which a screw extends to secure a driver mounting bracket on which said driver assembly is mounted to the enclosure cap, securing said driver assembly within the cavity of the driver housing.

10. The LED light base assembly of claim 9 wherein said bottom gasket is an O ring.

11. The LED light base assembly of claim 1 wherein said seal is a canonical shaped seal.

12. The LED light base assembly of claim 11 wherein said seal, top gasket and bottom gasket are made of silicone or rubber.

13. The LED light base assembly of claim 1 wherein said seal is an O ring.

14. The LED light base assembly of claim 1 further including a tilting mechanism secured to said driver housing and to a light fixture main body and a tilting mechanism lock screw.

15. The LED light base assembly of claim 14 further including:

a first tilting mechanism gasket positioned to fit within a recess around an opening of said tilting mechanism through which said tilting mechanism lock screw extends, said first tilting mechanism gasket sealing said LED driver housing and said tilting mechanism from entry of water; and

a second tilting mechanism gasket positioned to fit around an opening in a top portion of the tilting mechanism through which at least one wire extends and to seal said tilting mechanism from entry of water.

16. The LED light base assembly of claim 15 wherein said second tilting mechanism gasket is further positioned to fit between said tilting mechanism and a fixture main body, said second tilting mechanism gasket further sealing said fixture main body from entry of water.

17. An LED landscape light fixture comprising:

an LED light source; and

an LED light base assembly, said LED light base assembly including;

a driver housing including a base portion including a control knob opening in a wall of the base portion;

an LED driver assembly including a potentiometer;

a seal; and

a dimming control knob including a shaft portion, said seal being positioned between a rear side of said dimming control knob and a surface of said wall of the base portion of the driver housing, said shaft of said dimming control knob being in physical contact with a rotatable control of said potentiometer, said seal providing a water tight seal between the dimming control knob and the surface of said wall of the base portion of the driver housing.

18. The LED landscape light fixture of claim 17 wherein said light fixture is a spot light fixture.

19. The LED landscape light fixture of claim 17 wherein said light fixture is a flood light fixture.

20. The LED landscape light fixture of claim 19 wherein said flood light fixture further includes an asymmetric light reflector, said asymmetric light reflector positioned in front of said LED light source.