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 reflector having a face angled relative to a primary direction of the SSL device by a first angle Φ, wherein the face has an edge proximate to a front of the SSL device; and
a solid state emitter (SSE) angled relative to the primary direction by a 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 face in the primary direction of the SSL device, and
wherein light emitted from a first peripheral region of the SSE is directed towards the edge 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 face of the reflector towards a first edge of the SSE.
3. The SSL device of claim 1 , wherein the SSE and reflector are comprised in a housing, and wherein the housing includes a channel configured to permit a flow of air across the SSE.
4. The SSL device of claim 3 , wherein the channel is configured to permit the flow of air across at least one of an active portion or a back portion of the SSE.
5. The SSL device of claim 3 , wherein a back portion of the SSE includes a plurality of thermally conductive projections extending into the channel.
6. The SSL device of claim 3 , wherein the channel is open to ambient air at one of a front or a back of the housing.
7. The SSL device of claim 3 , further comprising an air pressurizer positioned relative to the channel to drive air through the channel.
8. A solid state lighting (SSL) device, comprising:
a reflector having a first face and a second face, each of the first and second faces angled relative to a primary direction of the SSL device by a first angle Φ, each of the first and second faces having an edge proximate to a front of the SSL device; and
first and second solid state emitters (SSEs), each angled relative to the primary direction by a 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 faces, respectively, in the primary direction of the SSL device
wherein light emitted from a first peripheral region of the first SSE is directed towards a first edge of the corresponding first face, and
wherein light emitted from a first peripheral region of the second SSE is directed towards a second edge of the corresponding second face.
9. The SSL device of claim 8 , wherein:
light emitted from a second peripheral region of the first SSE opposite the first peripheral region thereof is reflected by the first face 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 face towards the first peripheral region of the second SSE.
10. The SSL device of claim 8 , wherein the first SSE, the second SSE, and the reflector are comprised in a housing, and wherein the housing includes a channel configured to permit a flow of air across the first and second SSEs.
11. The SSL device of claim 10 , wherein the channel is configured to permit the flow of air across at least one of an active portion or a back portion of the first and second SSEs.
12. The SSL device of claim 10 , wherein a back portion of each of the first and second SSEs includes a plurality of thermally conductive projections extending into the channel.
13. The SSL device of claim 10 , wherein the channel is open to ambient air at one of a front or a back of the housing.
14. The SSL device of claim 10 , further comprising an air pressurizer positioned relative to the channel to drive air through the channel.
15. The SSL device of claim 8 , wherein the edge of the first face of the reflector and the edge of the second face of the reflector meet at a line.
16. The SSL device of claim 8 , wherein the edge of the first face of the reflector and the edge of the second face of the reflector lie in a plane and are not parallel.