# US 10,309,623 B2 · Lamp having LED module fixing element with bayonet mount structure, and adapter structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,623 B2 - Document ID: US10309623B2 - Status: Granted - Kind: B2 - Application number: 15/543,433 - Filed: 2016-01-21 - Published: 2018-01-04 - Granted: 2019-06-04 - Earliest claimed: 2015-01-23 - Assignees: Viabizzuno S.R.L. - Applicants: VIABIZZUNO S.r.l. - Inventors: Mario Nanni - Web page: https://patentgrep.com/patent/US10309623B2 ## CPC - F21V 19/003: {Fastening of light source holders, e.g. of circuit boards or substrates holding light sources} - F21K 9/20: Light sources comprising attachment means - F21V 17/14: Bayonet-type fastening - F21V 19/0055: {by screwing} - F21V 19/04: with provision for changing light source, e.g. turret {(auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006)} - F21V 29/503: of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858) - F21V 7/041: {with conical or pyramidal surface} - F21V 7/06: with parabolic curvature - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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 - 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 lamp structure includes an a LED light source, a heat sink element having a flat surface for supporting the LED light source and a central axis perpendicular to the flat surface, a fixing element for pressing the light source against the flat supporting surface, means for removably fastening the fixing element to the heat sink element, and an adapter element providid between the LED light source and the fixing element for actively coupling one of a plurality of different LED light sources to the fixing element. A method of replacing an LED light source in a lamp structure is also provided. ## Claims ### Claim 1 A modular LED lamp structure comprising: an LED light source, a heat sink element having a flat surface to support the LED light source and a central axis perpendicular to the flat surface, a conditioning device for conditioning a beam of light emitted by the LED light source, the conditioning device including a reflective surface for reflecting the beam of light, a fixing element configured to press the LED light source against the flat surface of the heat sink element, the fixing element including an engaging area for coupling to the conditioning device, a fastening device for removably fastening the fixing element to the heat sink element, wherein the engaging area extends circumferentially inside an outer cylindrical portion of the fixing element to define, together with a matching end portion of the conditioning device, a bayonet coupling to secure the conditioning device to the heat sink element, a snap-on device including a spring biased engagement member for fixing the bayonet coupling; an interchangeable adapter element interposed between the LED light source and the fixing element to make the fixing element compatible with one of different light sources; wherein the fixing element and the interchangeable adapter element have respective matching faces configured to engage with each other to define a shape coupling, the shape coupling including an asymmetrical profile to define a single angular coupling orientation relative to the central axis. ### Claim 2 (depends on 1) The modular structure according to claim 1, wherein the fixing element further comprises a central portion for engaging with the adapter element and an outer cylindrical portion enclosing the central portion and configured for dissipating heat generated by the LED light source. ### Claim 3 (depends on 2) The modular structure according to claim 2, wherein a central axis of the outer cylindrical portion extends perpendicular to the flat surface of the heat sink element. ### Claim 4 A method for substituting an LED light source in a modular lamp structure, comprising: providing: a heat sink element having a flat surface for supporting the LED light source and a central axis perpendicular to the flat surface, a fixing element configured to press the LED light source against the flat surface, an Interchangeable adapter element interposed between the LED light source and the fixing element for coupling the fixing element to the LED light source, and a fastening device for removably fastening the fixing element to the heat sink element, freeing the fixing element from the heat sink element by acting on the fastening devices, removing the LED light source to be substituted and the interchangeable adapter element, positioning a different LED light source on the heat sink element, the different LED light source being configured differently from the LED light source, positioning a different adapter element shaped to receive the different LED light source, the different adapter element being configured differently from the interchangeable adapter element, positioning the fixing element on the different adapter element and securing the different adapter element to the heat sink element by acting on the fastening device.