×

LED flashlight with improved heatsink

  • US 9,494,308 B1
  • Filed: 06/14/2016
  • Issued: 11/15/2016
  • Est. Priority Date: 12/22/2014
  • Status: Active Grant
First Claim
Patent Images

1. A lighting apparatus, comprising:

  • an outer casing that is thermally conductive;

    a light emitting diode (“

    LED”

    ) package contained within the outer casing, said LED package comprising;

    a substrate;

    an LED die held by the substrate, said LED die configured to emit light outwardly from a front surface of the LED package;

    a first electrically conductive pad;

    a second electrically conductive pad; and

    a thermal pad configured for removing heat from the LED die to outside of the LED package;

    wherein the first and second electrically conductive pads are configured to provide power to cause the LED die to emit light;

    wherein the first and second electrically conductive pads and the thermal pad are located on a rear surface of the LED package opposite from the LED die; and

    a heatsink assembly held within the outer casing, said heatsink assembly comprising;

    an outer electrically conductive member that is thermally conductive and which is mechanically connected to the outer casing;

    a core of an electrically insulating material which is held within a cavity formed in the outer electrically conductive member; and

    an inner electrically conductive member which is positioned and electrically isolated from the outer electrically conductive member by the core;

    wherein the first electrically conductive pad and the thermal pad are thermally and electrically bonded to a first top surface of the outer electrically conductive member without use of a printed circuit board and the second electrically conductive pad is electrically bonded to a second top surface of the inner electrically conductive member.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×