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US 2018/0321489 A1Published application
Illumination structure
AssigneeCalsonic Kansei Corporation
InventorKazunori TOMARU
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Abstract
An illumination structure includes a substrate having a front surface on which a light source is attached, and a reflector arranged on the front surface of the substrate to surround the light source, wherein the reflector includes a reflection wall part having a regular pyramid-like shape, and four inside surfaces of the reflection wall part having the regular pyramid-like shape include steep slope parts, respectively, having an angle larger than 7.5 degrees and smaller than 15 degrees with respect to a direction of an optical axis of the light source as a standard.
Claims5
An illumination structure comprising:
- a substrate having a front surface on which a light source is attached;
- and
- a reflector arranged on the front surface of the substrate to surround the light source, wherein
- the reflector comprises a reflection wall part having, in an inside surface thereof, four reflection surfaces having a truncated regular pyramid-like shape,
- the four reflection surfaces of the reflection wall part having the truncated regular pyramid-like shape comprise steep slope parts, respectively, expanding at an angle larger than 7.5 degrees and smaller than 15 degrees with respect to a direction of an optical axis of the light source as a standard, and
- each of the steep slope parts extends from a side of an emission part of the reflector toward a position of a corner between an upper surface and a side surface of a light emitting part of the light source.
3 more elements
Dependencies are inferred from the claim text.