Peltier-cooled LED lighting assembly
AssigneeAltman Stage Lighting Co., Inc.
InventorJohn T. Ryan
Life of this patent
Estimating the term…
Abstract
A high-powered lighting assembly includes an easily sealed continuous thermal barrier and a solid-state actively controlled closed-loop refrigeration system to maximize operational efficiencies and increase unit life. The thermal barrier prevents thermal back-flow from a heat sink plate or a housing to a lighting array while insulating a control module and a thermal sensor with improved sealing geometry. The refrigeration system is optimally positioned to controllably pump heat from the lighting array to the heat sink plate.
Claims18
A high-powered lighting assembly, comprising:
- a heat sink plate in thermal contact with a housing;
- a light-emitting array on a thermally conductive printed circuit board having at least a metal layer opposite said array;
- means for sensing a temperature of said metal layer;
- means for cooling and transferring thermal energy from at least a first portion of said metal layer to said heat sink plate;
- means for controlling said cooling means and maintaining said temperature at a predetermined temperature during an operation of said assembly;
- and
- an insulation layer thermally isolating said array, said metal layer, said sensing means, and said control means from each of said housing and said heat sink plate, whereby said insulating layer prevents at least one of a convective and a conductive thermal back flow from said housing and said heat sink plate.
An high-powered lighting assembly, comprising:
- a heat sink plate in thermal contact with a housing;
- a light-emitting array on a thermally conductive printed circuit board having at least a metal layer opposite said array;
- a thermal sensor unit for detecting a temperature of said metal layer;
- a thermo-electric cooling unit thermally joining said metal layer opposite said array and said heat sink plate;
- a control unit for controlling said cooling unit and maintaining said temperature at a predetermined temperature during an operation of said assembly;
- and
- an insulation layer sealingly and thermally isolating said array, said metal layer, said sensor unit, and said control unit from each of said housing and said heat sink plate, thereby preventing at least one of a convective and a conductive thermal back flow from both said housing and said heat sink plate.
A high-powered lighting assembly, comprising:
- a heat sink plate in thermal contact with a housing;
- a light-emitting array on a first member having at least a metal layer opposite said array;
- means for sensing a temperature of said array;
- means for cooling and transferring thermal energy from at least a first portion of said array to said heat sink plate;
- means for controlling said cooling means and maintaining said temperature at a predetermined temperature during an operation of said assembly;
- and
- means for insulating and thermally isolating said array, said metal layer, said sensor means, and said control means from each of said housing and said heat sink plate, and preventing at least one of a convective and a conductive thermal back flow from one of said housing and said heat sink plate to said metal layer.
A high-powered lighting assembly, comprising:
- a heat sink plate in thermal contact with a housing;
- a light-emitting array;
- control means for controllably maintaining a temperature of said array at a predetermined temperature during an operation of said assembly;
- and
- insulation means for thermally isolating said array and said control means from said heat sink plate and said housing during said operation by preventing one of a convective and a conductive thermal back flow from one of said housing and said heat sink plate to said array.
Dependencies are inferred from the claim text.