초록 ▼

A light fixture is provided that includes a plurality of light emitting sources, such as e.g., LEDs, that are arranged along a longitudinal direction. A heat sink provides a support structure for the lights while also assisting with the dissipation of heat. A diffuser covers the light emitting sourc

A light fixture is provided that includes a plurality of light emitting sources, such as e.g., LEDs, that are arranged along a longitudinal direction. A heat sink provides a support structure for the lights while also assisting with the dissipation of heat. A diffuser covers the light emitting sources and is also supported by the heat sink. One or more optical elements such as e.g., a reflector or internally reflecting lens may be used to help direct light rays from the light emitting sources. Certain features may be added at the ends of the light fixture for mounting upon a surface and/or for further controlling the direction of light rays projecting from the light fixture. The light fixture is suitable for a variety of applications including e.g., the illumination of products displayed on shelving for consumer viewing.

대표청구항 ▼

1. A light fixture, comprising: at least one heat sink defining a longitudinal direction;at least one circuit board attached to said at least one heat sink;a plurality of light emitting sources mounted to said at least one circuit board, said light emitting sources spaced apart from each other;a dif

1. A light fixture, comprising: at least one heat sink defining a longitudinal direction;at least one circuit board attached to said at least one heat sink;a plurality of light emitting sources mounted to said at least one circuit board, said light emitting sources spaced apart from each other;a diffuser extending along the longitudinal direction and attached to said at least one heat sink, said diffuser covering said light emitting sources; anda reflector extending along the longitudinal direction, said reflector defining a plurality of cavities, with each of said cavities containing at least one of said light emitting sources, each of said cavities comprising one or more light reflective surfaces for reflecting light away from the light fixture;wherein each of said cavities comprises: a first pair of light reflective surfaces positioned in an opposing manner about at least one of said light emitting sources, said first pair of light reflective surfaces having a first parabolic shape in a plane parallel to said at least one circuit board; anda second pair of light reflective surfaces positioned in an opposing manner and with said first pair of light reflective surfaces about at least one of said light emitting sources, said second pair of light reflective surfaces having a second parabolic shape in a plane parallel to said at least one circuit board, said second parabolic shape different from the first parabolic shape. 2. The light fixture as in claim 1, further comprising: at least one lens extending along the longitudinal direction attached to said circuit board, and positioned directly over at least one of said plurality of light emitting sources;said lens comprising at least one internally reflective surface for reflecting light away from the light fixture, andat least one outer surface through which light is emitted from the at least one of said plurality of light emitting sources. 3. The light fixture as in claim 1, further comprising: a lens extending along the longitudinal direction, attached to said circuit board, and positioned directly over said plurality of light emitting sources;said lens comprising at least one internally reflective surface for reflecting light away from the light fixture, andat least one outer surface through which light is emitted from said plurality of light emitting sources. 4. The light fixture as in claim 1, further comprising a plurality of circuit boards attached to said at least one heat sink, said plurality of circuit boards positioned along the longitudinal direction. 5. The light fixture as in claim 1, wherein each of said plurality of light emitting sources comprises an LED. 6. The light fixture as in claim 1, wherein said at least one heat sink further comprises a pair of grooves positioned on opposite sides of said plurality of light emitting sources and extending along the longitudinal direction, and wherein said diffuser includes a pair of opposing longitudinal edges received into said pair of grooves. 7. The light fixture as in claim 1, wherein said at least one heat sink further comprises a pair of ribs positioned on opposite sides of said plurality of light emitting sources and extending along the longitudinal direction, and wherein said diffuser comprises a pair of opposing longitudinal grooves configured for complementary receipt of said pair of ribs. 8. The light fixture as in claim 1, wherein said plurality of light emitting sources are arranged along the longitudinal direction. 9. A refrigerated display case including the light fixture of claim 1. 10. The light fixture as in claim 2, wherein said internally reflective surface comprises a pair of opposing, internally reflective surfaces that are each arcuate in shape within a plane that is orthogonal to the longitudinal direction. 11. The light fixture as in claim 2, wherein said at least one lens comprises a plurality of lens attached to said circuit board and positioned adjacent to each other along the longitudinal direction, wherein each lens of said plurality of lens is positioned directly over at least one of said plurality of light emitting sources. 12. The light fixture as in claim 10, wherein said outer surface lies substantially within a plane that is parallel to the longitudinal direction. 13. A light fixture, comprising: at least one heat sink defining a longitudinal direction;at least one circuit board attached to said at least one heat sink;a plurality of light emitting sources mounted to said at least one circuit board, said light emitting sources spaced apart from each other; anda diffuser extending along the longitudinal direction and attached to said at least one heat sink, said diffuser covering said light emitting sources;wherein said at least one heat sink extends between a pair of ends, and wherein said light fixture further comprises:a pair of caps attached to said pair of ends, respectively, each said cap comprising:a peg extending along the longitudinal direction;the light fixture further comprising: a pair of brackets for suspending the light fixture from a surface, each said bracket defining an aperture for rotationally receiving the peg of a respective cap; anda set screw installed in one of said brackets for fixing a rotational position of the light fixture.