# US 11,906,139 B1 · Lamp head assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,906,139 B1 - Document ID: US11906139B1 - Status: Granted - Kind: B1 - Application number: 18/318,741 - Filed: 2023-05-17 - Granted: 2024-02-20 - Earliest claimed: 2023-03-17 - Assignees: Jiangmen City Shengda Lighting Co., Ltd. - Applicants: Jiangmen City Shengda Lighting Co., Ltd. - Inventors: Xiaojun Xu - Web page: https://patentgrep.com/patent/US11906139B1 ## CPC - F21V 17/06: the fastening being onto or by the lampholder - F21V 19/003: {Fastening of light source holders, e.g. of circuit boards or substrates holding light sources} - F21V 1/12: Composite shades {, i.e. shades being made of distinct parts} - F21V 3/02: characterised by the shape - F21V 19/0025: {the fastening means engaging the conductors of the light source, i.e. providing simultaneous fastening of the light sources and their electric connections} - F21V 19/0045: {by tongue and groove connections, e.g. dovetail interlocking means fixed by sliding} - F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes - F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb - F21S 4/10: with light sources attached to loose electric cables, e.g. Christmas tree lights - 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 - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - 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 head assembly includes a lamp holder, a light-emitting element, a first lampshade, and a second lampshade. A plug interface is disposed on the lamp holder for supplying power, and the light-emitting element is inserted into the plug interface. The first lampshade includes a first connecting port and a first accommodation cavity, the first connecting port is communicated with the first accommodation cavity, the first lampshade is connected to the lamp holder through the first connecting port, and the light-emitting element is located in the first accommodation cavity. The second lampshade includes an extension body and an abutting portion, and the abutting portion is connected to a first side of the extension body. The abutting portion abuts against the first connecting port, or, the abutting portion abuts against the lamp holder. The extension body extends from the abutting portion toward the first accommodation cavity. ## Claims ### Claim 1 A lamp head assembly, comprising: a lamp holder; a light-emitting element; a first lampshade; and a second lampshade; wherein a plug interface is disposed on the lamp holder for supplying power, and the light-emitting element is inserted into the plug interface; the first lampshade comprises a first connecting port and a first accommodation cavity, the first connecting port is communicated with the first accommodation cavity, the first lampshade is connected to the lamp holder through the first connecting port, and the light-emitting element is located in the first accommodation cavity; the second lampshade comprises an extension body and an abutting portion, and the abutting portion is connected to a first side of the extension body; the abutting portion abuts against the first connecting port, or, the abutting portion abuts against the lamp holder; the extension body extends from the abutting portion toward the first accommodation cavity, and light of the light-emitting element diffuses toward the first accommodation cavity through the extension body; wherein the extension body comprises supporting legs and extension plates, the supporting legs are connected to the abutting portion and the extension plates, the light-emitting element abuts against one end of each of the extension plates close to the supporting legs, and the light of the light-emitting element diffuses toward the first accommodation cavity through the extension plates. ### Claim 2 (depends on 1) The lamp head assembly according to claim 1, wherein an outer diameter of the abutting portion is greater than an inner diameter of the first connecting port. ### Claim 3 (depends on 1) The lamp head assembly according to claim 1, wherein the extension body comprises side walls, a second connecting port, and a second accommodation cavity, the side walls are enclosed to form the second accommodation cavity, the second connecting port is located at a second side of the extension body and is communicated with the second accommodation cavity, the side walls abut against the first lampshade through the first connecting port, and the light-emitting element enters the second accommodation cavity through the second connecting port. ### Claim 4 (depends on 3) The lamp head assembly according to claim 3, wherein heat dissipation grooves are defined in the side walls for heat of the light-emitting element to pass through. ### Claim 5 (depends on 4) The lamp head assembly according to claim 4, wherein the extension body further comprises a top cover, the top cover is located at the second side of the extension body distal from the second connecting port, and is connected to the side walls; the top cover and the side walls form the second accommodation cavity, and the light-emitting element directly faces the top cover. ### Claim 6 (depends on 5) The lamp head assembly according to claim 5, wherein the top cover is recessed in the extension body from a direction of the first accommodation cavity toward a direction of the second accommodation cavity. ### Claim 7 (depends on 1) The lamp head assembly according to claim 1, wherein a plurality of light guide holes are defined on each of the extension plates, and at least two of the extension plates are connected to form an included angle. ### Claim 8 (depends on 7) The lamp head assembly according to claim 7, wherein a threaded hole is defined in the lamp holder, external threads are formed on a portion of the first lampshade close to the first connecting port, and the lamp holder is connected to the first lampshade through the external threads. ### Claim 9 (depends on 8) The lamp head assembly according to claim 8, wherein the plug interface is disposed in the threaded hole, the plug interface comprises at least two connecting jacks, the light-emitting element comprises connecting pins for matching the at least two connecting jacks.