LED array package covered with a highly thermal conductive plate
View Patent ↗A light source includes a substrate, a light emitting diode on the substrate, and a phosphor layer over the light emitting diode. A plate is on the phosphor layer. An attachment member is coupled to the plate and is configured to conduct heat away from the plate.
1. A light source, comprising:
a substrate;
a light emitting diode on the substrate;
a phosphor layer over the light emitting diode;
first means for conducting heat away from the phosphor layer, wherein the first means comprises a plate comprising at least one of a sapphire plate, a silicon carbide plate, a chemical-vapor-deposition diamond plate, a chemical-vapor-deposition silicon carbide on glass plate, a chemical-vapor-deposition diamond on glass plate, and a glass plate; and
second means for securing the first means to the light source and for conducting heat away from the first means, wherein the second means comprises a ring-shaped vertical member extending approximately perpendicular and attached to the substrate, wherein
the ring-shaped vertical member comprises an extrusion extending outwardly from a bottom portion of the ring-shaped vertical member approximately parallel to the substrate to attach to the substrate; and
the plate is attached to a top surface of the ring-shaped vertical member.
2. The light source of claim 1 , wherein the first means is transparent.
3. The light source of claim 1 , wherein the first means contacts the phosphor layer.
4. The light source of claim 1 , wherein the plate further comprises a metal net.
5. The light source of claim 1 , wherein the second means is metal.
6. The light source of claim 1 , wherein the ring-shaped vertical member is attached to the substrate with an adhesive.
7. The light source of claim 1 , wherein the extrusion is attached to the substrate with an adhesive.
8. The light source of claim 1 , wherein the extrusion and the substrate each have at least one hole that are aligned together.
9. The light source of claim 1 , wherein:
the ring-shaped vertical member comprises a flange extending inwardly from a top portion of the ring-shaped vertical member approximately parallel to the substrate;
a bottom surface of the ring-shaped vertical member is attached to the substrate with an adhesive; and
the flange extends over an edge of the plate to secure the plate to the light source.
10. The light source of claim 1 , wherein:
the ring-shaped vertical member comprises a flange extending inwardly from a top portion of the ring-shaped vertical member approximately parallel to the substrate, and an extrusion extending outwardly from a bottom portion of the ring-shaped vertical member approximately parallel to the substrate; and
the flange extends over an edge of the plate to secure the plate to the light source.
11. The light source of claim 1 , wherein the vertical member comprises at least one column or wall and the plate is attached to said at least one column or wall.
12. The light source of claim 1 , further comprising at least one additional light emitting diode on the substrate; wherein said light emitting diode and said at least one additional light emitting diode are in an array on the substrate, and said phosphor layer is also over said at least one additional light emitting diode.