# US 2014/0152177 A1 · Lamp > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152177 A1 - Document ID: US20140152177A1 - Status: Published application - Kind: A1 - Application number: 14/234,187 - Filed: 2012-02-03 - Published: 2014-06-05 - Earliest claimed: 2011-07-22 - Assignees: Panasonic Corporation - Inventors: Tsugihiro Matsuda; Nobuyoshi Takeuchi; Yoshinori Kakuno; Masahiro Miki; Hideo Nagai; Takaari Uemoto - Web page: https://patentgrep.com/patent/US20140152177A1 ## 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 - F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb - F21K 9/90: Methods of manufacture - F21K 9/238: Arrangement or mounting of circuit elements integrated in the light source - F21V 19/003: {Fastening of light source holders, e.g. of circuit boards or substrates holding light sources} - F21V 23/006: {the substrate being distinct from the light source holder} - F21V 29/15: Thermal insulation - F21V 29/507: of means for protecting lighting devices from damage, e.g. housings - 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 - 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 In a lamp: an LED module and a circuit unit for lighting are housed within an envelope composed of a globe and a case; the LED module is attached to an end of an extension member that extends from a mount, which closes an opening at one end of the case, into the globe; the circuit unit is mounted inside the case; an insulation member disposed inside the case ensures insulation between the mount, which is made of metal, and the circuit unit; the insulation member has a bottomed cylinder portion inserted into the mount, and a protrusion portion formed on an outer circumference of the based cylinder portion that protrudes toward an inner surface of the mount; and the insulation member is attached to the mount by the protrusion portion pressing against the inner surface of the mount. ## Claims ### Claim at position 1 1-5. (canceled) ### Claim 6 A lamp comprising: an envelope that includes a globe and a case; a mount made of an electrically conductive material and having a cylinder portion and a cover portion that closes one end of the cylinder portion, the mount closing an opening at one end of the case; an extension member mounted on the cover portion of the mount and extending into the globe; a light-emitting element attached to the extension member and disposed inside the globe; a circuit unit disposed inside the case and configured to light the light-emitting element; and an insulation member disposed inside the case and insulating the circuit unit from the mount, wherein the insulation member has a cylindrical portion that is inserted into the cylinder portion of the mount and has a protrusion portion that is formed on an outer circumference of the cylindrical portion and that protrudes toward the mount, the insulation member being attached to the mount by the protrusion portion pressing on an inner surface of the cylinder portion of the mount. ### Claim 7 (depends on 6) The lamp of claim 6, wherein the protrusion portion is a plurality of protrusion portions disposed in a circumferential direction of the cylindrical portion, each protrusion portion being elongated in a direction parallel to the central axis of the cylindrical portion. ### Claim 8 (depends on 6) The lamp of claim 6, wherein the protrusion portion is a plurality of protrusion portions disposed in a circumferential direction of the cylindrical portion, each protrusion portion having a bump shape. ### Claim 9 (depends on 6) The lamp of claim 6, wherein the insulation member has an end wall disposed at one of two ends of the cylindrical portion, and the protrusion portion is disposed closer to the other one of the two ends of the cylindrical portion than the one end at which the end wall is disposed. ### Claim 10 (depends on 7) The lamp of claim 7, wherein the insulation member has an end wall disposed at one of two ends of the cylindrical portion, and the protrusion portion is disposed closer to the other one of the two ends of the cylindrical portion than the one end at which the end wall is disposed. ### Claim 11 (depends on 8) The lamp of claim 8, wherein the insulation member has an end wall disposed at one of two ends of the cylindrical portion, and the protrusion portion is disposed closer to the other one of the two ends of the cylindrical portion than the one end at which the end wall is disposed. ### Claim 12 (depends on 9) The lamp of claim 9, wherein the cover portion of the mount and the end wall of the insulation member are in contact with each other, a through hole passes through the cover portion of the mount and the end wall of the insulation member, and the extension member is fixed by a screw member, which has a head portion disposed inside the cylindrical portion of the insulation member and a screw portion that passes through the through hole. ### Claim 13 (depends on 10) The lamp of claim 10, wherein the cover portion of the mount and the end wall of the insulation member are in contact with each other, a through hole passes through the cover portion of the mount and the end wall of the insulation member, and the extension member is fixed by a screw member, which has a head portion disposed inside the cylindrical portion of the insulation member and a screw portion that passes through the through hole. ### Claim 14 (depends on 11) The lamp of claim 11, wherein the cover portion of the mount and the end wall of the insulation member are in contact with each other, a through hole passes through the cover portion of the mount and the end wall of the insulation member, and the extension member is fixed by a screw member, which has a head portion disposed inside the cylindrical portion of the insulation member and a screw portion that passes through the through hole.