LED mechanical lighting fixture

• US 9,835,321 B2
• Filed: 07/20/2015
• Issued: 12/05/2017
• Est. Priority Date: 07/20/2015
• Status: Active Grant

• Current Assignee: Paul E. Britt
• Original Assignee: Paul E. Britt
• Inventors: Britt, Paul E.
• Primary Examiner(s): Breval, Elmito
• Application Number:
  US14/803,587
• Publication Number:
  US 20170023230A1
• Time in Patent Office: 869 Days
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21S 8/06 by suspension
• 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 19/0055 by screwing
• CPC Class Codes: F21V 21/08 Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
• CPC Class Codes: F21V 23/001 the elements being electrical wires or cables
• CPC Class Codes: F21V 23/003 the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
• CPC Class Codes: F21V 29/503 of light sources cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H01L33/64
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 31/00 Gas-tight or water-tight arrangements
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An LED light unit which creates an air movement over a metal surface by way of convection. This keeps the LED unit significantly cooler than with just fins alone. This is accomplished by the design of a lamp. The LED chip transfers the heat to the metal surface and the hot air near that metal rises and starts a flow through channels designed into the lamp. This brings in cooler air over the metal surface in a directed method by convection to achieve better cooling of the LED chip area.

Claims

1. An LED mechanical lamp comprising an LED circuit board affixed to a metal module having a surface having a plurality of fins forming a plurality of open channels, a solid metal shroud having a central hole, the shroud placed over the metal module, to complete and cover the air channels creating an air duct, the LED circuit board generating heat and transferring the heat to the surface of the metal module causing an air intake providing a path for upward hot air flow through the center hole of the shroud, and by convection causing a flow of cool air to enter, due to the hot air uprising through the center hole causing cool air passage through the channels between the fins in the metal module surrounded by the solid metal shroud creating a convection draft to pull cool air through the intake of the air path horizontal channels bringing cool air over the metal module surface in a directed method over the LED board, cooling the metal module at its hottest point of contact with the LED circuit board.

2. The LED mechanical lamp of claim 1 in which a thermal heat transfer pad is attached to the LED circuit board.

3. The LED mechanical lamp of claim 1 further comprising a driver circuit board which fits into a tube attached to the metal module.

4. The LED mechanical lamp of claim 1 in which a lens is attached to the metal module.

5. The LED mechanical lamp of claim 1 in which the metal module has eight channels.

6. An LED mechanical lamp comprising an LED circuit board affixed to a metal module having a surface having a plurality of fins forming a plurality of open channels, a solid metal shroud having a central hole, the shroud placed over the metal module, to complete and cover the air channels creating an air duct, the LED circuit board generating heat and transferring the heat to the surface of the metal module causing an air intake providing a path for upward hot air flow through the center hole of the shroud, and by convection causing a flow of cool air to enter, due to the hot air uprising through the center hole causing cool air passage through the channels between the fins in the metal module surrounded by the solid metal shroud creating a convection draft to pull cool air through the intake of the air path horizontal channels bringing cool air over the metal module surface in a directed method over the LED board, cooling the metal module at its hottest point of contact with the LED circuit board, a driver circuit board inside of a tube in which wires run from the driver circuit board into the cap and are attached to a power source.

7. The LED mechanical lamp of claim 6 in which a thermal heat transfer pad is attached to the LED circuit board.

8. The LED mechanical lamp of claim 6 in which a lens is attached to the LED circuit board.

9. The LED mechanical lamp of claim 8 in which the power wires exit out of the cap in a downward manner and then curve in an upward manner, thereby providing rain protection for internal electronics.

10. An LED mechanical lamp comprising an LED circuit board affixed to a metal module having a surface having a plurality of fins forming a plurality of open channels, a solid metal shroud having a central hole, the shroud placed over the metal module, to complete and cover the air channels creating an air duct, the LED circuit board generating heat and transferring the heat to the surface of the metal module causing an air intake providing a path for upward hot air flow through the center hole of the shroud, and by convection causing a flow of cool air to enter, due to the hot air uprising through the center hole causing cool air passage through the channels between the fins in the metal module surrounded by the solid metal shroud creating a convection draft to pull cool air through the intake of the air path horizontal channels bringing cool air over the metal module surface in a directed method over the LED board, cooling the metal module at its hottest point of contact with the LED circuit board, a junction box containing a driver circuit board which modifies current and voltage to match LED requirements and connects to a power source.