US 9,523,493 B2Granted

Downlight with illumination angle adjustable polydirectionally

AssigneeOSRAM GmbH

InventorsYou Chen, Anmiao Li, Huanghui Lu, Shang Ping Xiao

Life of this patent

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Abstract

A downlight includes: an outer cover; a heatsink; and a light engine located between the outer cover and the heatsink, wherein the light engine is at least partially spherical; the heatsink has a hemispherical inner surface that matches with the spherical portion of the light engine; the outer cover and the heatsink are assembled together by an elastic extension member, thereby making the hemispherical inner surface of the heatsink in contact with the spherical portion of the light engine; the downlight includes a pin provided near the elastic extension member, with one end of the pin fixed to the heatsink and the other end extending through the outer cover. Pressing the end of the pin that extends through the outer cover, the elastic extension member is further extended to separate the heatsink and the light engine so that the illumination angle of the light engine can be adjusted.

Claims9

Dependent claims

A downlight, comprising:

an outer cover;
a heatsink;
and
a light engine located between said outer cover and said heatsink,
wherein said light engine is at least partially spherical and comprises:
a housing having a spherical contour and an opening and a LED light source provided inside said housing;
said heatsink disposed outside said housing and having a hemispherical inner surface that matches with a spherical portion of said housing;
said outer cover and said heatsink are assembled together by at least one elastic extension member, thereby making the hemispherical inner surface of said heatsink in contact with the spherical portion of said housing;
said downlight further comprising at least one pin provided in the vicinity of said elastic extension member, with one end of said pin fixed to said heatsink and the other end thereof extending through said outer cover, and by pressing the end of the pin that extends through said outer cover, said elastic extension member is further extended to separate said heatsink and said light engine so that the illumination angle of said light engine can be adjusted.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/004,175Filed 12 Mar 2012
Priority: CN 2011 1 007733323 Mar 2011
Published: US 2014/0003061 A12 Jan 2014
Granted: 20 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

F21V 29/77
With fins or blades: with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
B60Q 3/44
For mass transit vehicles, e.g. buses: spotlighting, e.g. reading lamps
F21K 9/20
Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers: light sources comprising…
F21S 8/026
Of recess-mounted type, e.g. downlighters: intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling