# US 8,770,794 B2 · Lamp and use of a lamp > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,794 B2 - Document ID: US8770794B2 - Status: Granted - Kind: B2 - Application number: 13/057,998 - Filed: 2009-07-23 - Published: 2012-05-24 - Granted: 2014-07-08 - Earliest claimed: 2008-08-05 - Assignees: OSRAM Opto Semiconductors GmbH - Applicants: Martin Moeck; Guenter Kirchberger - Inventors: Martin Moeck; Guenter Kirchberger - Web page: https://patentgrep.com/patent/US8770794B2 ## CPC - F21K 9/23: Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings - F21V 29/71: using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements - F21V 29/74: with fins or blades - F21W 2111/02: for roads, paths or the like - F21W 2131/103: of streets or roads - F21Y 2115/10: Light-emitting diodes [LED] - F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract A luminous means (1) is specified, comprising a heat sink (2), which comprises a top surface (21) and a bottom surface (22), and also two sections (23), wherein the two sections (23) are arranged one above the other, and each of the sections (23) has a side surface (231) which runs transversely with respect to the top surface (21) and bottom surface (22) of the heat sink (2) and at which at least one light-emitting diode (3) is arranged. ## Claims ### Claim 1 A luminous means comprising: a heat sink, which comprises a top surface and a bottom surface, and also at least two sections, wherein: the at least two sections are arranged one above the other, each of the sections has a side surface which runs transversely with respect to the top surface and bottom surface of the heat sink and at which at least one light-emitting diode is arranged, each section of the heat sink is formed from a metal sheet, the side surfaces of the sections being embodied as lug-like regions of the metal sheet, each side surface of each section is rotatable about a rotation axis by bending of the metal sheet from which the section is formed, and each side surface of each section comprises a connection carrier applied to the side surface, via which connection carrier a light-emitting diode arranged at the side surface is electrically connected. ### Claim 2 (depends on 1) The luminous means as claimed in claim 1, wherein the top surface has a larger area content than the bottom surface, and the section lying closer to the top surface has a larger area content of its base area than the section further away from the top surface. ### Claim 3 (depends on 1) The luminous means as claimed in claim 1, comprising three or more sections which are geometrically similar to one another, wherein the area content of the base area of each section is all the greater, the closer the section is to the top surface of the heat sink. ### Claim 4 (depends on 1) The luminous means as claimed in claim 1, wherein the heat sink has a truncated-pyramid-shaped or a truncated-cone-shaped envelope at least in places and the sections of the heat sink are arranged in a staircase-like fashion. ### Claim 5 (depends on 1) The luminous means as claimed in claim 1, wherein the heat sink has a cylindrical envelope. ### Claim 6 (depends on 1) The luminous means as claimed in claim 1, wherein the sections each have an n-gonal base area and comprise n side surfaces, where n is a natural number greater than 2. ### Claim 7 (depends on 1) The luminous means as claimed in claim 1, wherein the sections each have a round base area. ### Claim 8 (depends on 1) The luminous means as claimed in claim 1, wherein the sections are arranged symmetrically or substantially symmetrically with respect to a central axis of the heat sink. ### Claim 9 (depends on 1) The luminous means as claimed in claim 1, wherein the sections are heat sink elements which are connected to one another and form the heat sink. ### Claim 10 (depends on 1) The luminous means as claimed in claim 1, wherein the rotation axis runs parallel or substantially parallel to the top surface and/or bottom surface of the heat sink. ### Claim 11 (depends on 1) The luminous means as claimed in claim 1, wherein at least one control device and/or regulating device, by means of which the light-emitting diodes of the luminous means are energized, is arranged on the top surface.