Solid state lights with cooling structures
A solid state lighting (SSL) with a solid state emitter (SSE) having thermally conductive projections extending into an air channel, and methods of making and using such SSLs. The thermally conductive projections can be fins, posts, or other structures configured to transfer heat into a fluid medium, such as air. The projections can be electrical contacts between the SSE and a power source. The air channel can be oriented generally vertically such that air in the channel warmed by the SSE flows upward through the channel.
1. A solid state lighting (SSL) device, comprising:
a reflective surface angled relative to a primary direction of the SSL device by a non-zero first angle Φ, wherein the reflective surface has a forward portion located further in the primary direction than a remainder of the reflective surface; and
a solid state emitter (SSE) angled relative to the primary direction by a non-zero second angle θ,
wherein the first angle Φ and the second angle θ are configured so that light emitted from the SSE is reflected by the reflective surface in the primary direction of the SSL device, and
wherein light emitted from a first peripheral region of the SSE is directed towards the forward portion of the reflector.
2. The SSL device of claim 1 , wherein light emitted from a second peripheral region of the SSE opposite the first peripheral region is reflected by the reflective surface towards a first edge of the SSE.
3. The SSL device of claim 1 , wherein reflective surface is planar.
4. The SSL device of claim 1 , wherein reflective surface is a facet of a faceted reflector.
5. The SSL device of claim 4 , wherein the faceted reflector is truncated and the forward portion of the reflective surface is a truncated edge of the faceted reflector.
6. The SSL device of claim 4 , wherein facets of the faceted reflector converge at an apex, and wherein the forward portion of the reflective surface is adjacent the apex.
7. The SSL device of claim 1 , wherein the reflective surface is curvate.
8. The SSL device of claim 1 , wherein the reflective surface is conical.
9. The SSL device of claim 1 , wherein the reflective surface is a truncated cone.
10. A solid state lighting (SSL) device, comprising:
a reflector having a first reflective surface and a second reflective surface, each of the first and second reflective surfaces angled relative to a primary direction of the SSL device by a non-zero first angle Φ, each of the first and second reflective surfaces having a forward portion further in the primary direction than a remainder of the corresponding reflective surface; and
first and second solid state emitters (SSEs), each angled relative to the primary direction by a non-zero second angle θ, wherein the first angle Φ and the second angle θ are configured so that light emitted from the first and second SSEs is reflected by the first and second reflective surfaces, respectively, in the primary direction of the SSL device,
wherein light emitted from a first peripheral region of the first SSE is directed towards the forward portion of the corresponding first reflective surface, and
wherein light emitted from a first peripheral region of the second SSE is directed towards the forward portion of the corresponding second reflective surface.
11. The SSL device of claim 10 , wherein:
light emitted from a second peripheral region of the first SSE opposite the first peripheral region thereof is reflected by the first reflective surface towards the first peripheral region of the first SSE, and
light emitted from a second peripheral region of the second SSE opposite the first peripheral region thereof is reflected by the second reflective surface towards the first peripheral region of the second SSE.
12. The SSL device of claim 10 , wherein the first and second reflective surface are each planar.
13. The SSL device of claim 10 , wherein the reflector is faceted, and
wherein the first and second reflective surface are each facets of the reflector.
14. The SSL device of claim 10 , wherein the forward portion of the first reflective surface of the reflector and the forward portion of the second reflective surface of the reflector meet at a line.
15. The SSL device of claim 10 , wherein the forward portion of the first reflective surface of the reflector and the forward portion of the second reflective surface of the reflector lie in a plane and are not parallel.
16. The SSL device of claim 10 , wherein the forward portion of the first reflective surface of the reflector and the forward portion of the second reflective surface of the reflector meet at a point.