CUSTOMIZABLE, LONG LASTING, THERMALLY EFFICIENT, ENVIRONMENTALLY FRIENDLY, SOLID-STATE LIGHTING APPARATUSES

• US 20100315252A1
• Filed: 06/10/2010
• Published: 12/16/2010
• Est. Priority Date: 06/10/2009
• Status: Active Grant

• Current Assignee: Prafulla Madhukar Thote
• Original Assignee: Prafulla Madhukar Thote
• Inventors: DESPHANDE, SHIRISH DEVIDAS, THOTE, PRAFULLA MADHUKAR
• Granted Patent: US 8,956,018 B2
• Time in Patent Office: Days
• US Class Current: 340/670
• CPC Class Codes: F21S 8/088 with lighting device mounted on top of the standard, e.g. for pedestrian zones
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10T 29/49002 Electrical device making

Abstract

The invention provides lighting apparatuses which are power efficient, environment friendly and long lasting and can be manufactured with high degree of speed, accuracy and flexibility. The lighting apparatuses are easily serviceable and can be produced, transported economically and have higher economical value even on completion of life term of the lighting apparatuses. The present invention reduce the waste of raw material thereby utilizing maximum percentage raw material for produce solid state lighting fixtures using CAD and CNC process and provides retrofitting lighting apparatuses which can be replaced without making considerable changes in existing infrastructure.

Claims

1. A long-lasting, energy-efficient, solid-state lighting apparatus comprising:

a fixture having a mounting surface, the fixture made of a thermally conductive sheet metal, the fixture further configured to act as a heat sink, wherein the fixture has a thickness between 0.5 and 6.0 millimeters;

an anodized coating covering the fixture, the anodized coating configured to prevent corrosion and increase thermal conductivity;

a metal core printed circuit board (MCPCB) mounted on the mounting surface;

a power supply unit enclosed within a housing in the fixture, the power supply unit configure to generate an output voltage; and

a solid-state light-emitting source mounted on the MCPCB, the solid-state light-emitting source coupled to the power supply unit.

2. The lighting apparatus of claim 1, further comprising a coated layer of copper placed between the fixture and the MCPCB, wherein the coated layer configured to prevent corrosion.

3. The lighting apparatus of claim 1, wherein the output voltage can be generated from an AC or DC input power.

4. The lighting apparatus of claim 1, further comprising at least one heat dissipating panel mounted on the fixture, the panel configured to act as a secondary heat sink, wherein the panel is made from at least one thermally conductive material selected from the set of aluminum, iron, steel, and copper.

5. The lighting apparatus of claim 1, wherein the mounting surface comprises a hole, the hole configured to provide heat dissipation and wind resistance.

6. The lighting apparatus of claim 4, wherein the panel comprises a hole, the hole configured to provide heat dissipation and wind resistance.

7. The lighting apparatus of claim 1, wherein the fixture comprises a base plane, the base plane having an adjustable inclination.

8. The lighting apparatus of claim 3, further comprising a photo sensor coupled to the input power or the power supply unit, the photo sensor configured to selectively control power delivery to the solid-state light-emitting source.

9. The lighting apparatus of claim 3, further comprising a motion sensor coupled to the input power or the power supply unit, the motion sensor configured to selectively control power delivery to the solid-state light-emitting source.

10. The lighting apparatus of claim 1, further comprising a lens mounted on the solid-state light-emitting source, the lens configured to focus light output from the solid-state light-emitting source, and the lens further configured to prevent light scatter.

11. The lighting apparatus of claim 1, further comprising a protective transparent sheet covering the solid-state light-emitting source, the sheet made from glass or plastic.

12. The lighting apparatus of claim 1, wherein the solid-state light-emitting source is a LED, OLED, or PLED.

13. The lighting apparatus of claim 1, wherein the lighting apparatus is configured to achieve ingress protection standards.

14. The lighting apparatus of claim 1, wherein the power supply unit is configured to achieve a power factor greater than 0.98.

15. The lighting apparatus of claim 1, wherein the thermally conductive sheet metal is aluminum, iron, steel, or copper.

16. The lighting apparatus of claim 1, wherein a thermal interface material is placed between the fixture and the MCPCB.

17. A long-lasting, energy-efficient, solid-state lighting apparatus comprising:

a fixture having a mounting surface, the fixture made of a first thermally conductive sheet metal manufactured from a computerized numerically controlled process, the fixture further configured to act as a first heat sink, wherein the fixture has a thickness between 0.5 and 6.0 millimeters;

an anodized coating covering the fixture, the anodized coating configured to prevent corrosion and increase thermal conductivity;

a metal core printed circuit board (MCPCB) mounted on the mounting surface;

a power supply unit enclosed within a housing in the fixture, the power supply unit configure to generate an output voltage;

a solid-state light-emitting source mounted on the MCPCB, the solid-state light-emitting source coupled to the power supply unit; and

a second heat sink placed on the fixture, the second heat sink configured to dissipate heat from the solid-state light-emitting source.

18. A method for manufacturing of long-lasting, energy-efficient, solid-state lighting apparatus comprising steps of:

receiving, at a computerized numerically controlled process machine, a fixture design and a sheet metal;

punching the sheet metal according to the fixture design using the machine,

bending the sheet metal using the machine;

applying an anodized coating to the sheet metal;

mounting a metal core printed circuit board (MCPCB) having a solid-state light-emitting source to the sheet metal; and

mounting a power supply unit to the sheet metal.

19. The method of claim 19, further comprising the step of mounting a heat sink to the sheet metal.

20. The method of claim 19, further comprising the step of applying a layer of copper between the sheet metal and the MCPCB.