# US 2020/0400291 A1 · Lighting unit and rail type lighting device comprising same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0400291 A1 - Document ID: US20200400291A1 - Status: Published application - Kind: A1 - Application number: 16/971,442 - Filed: 2018-12-27 - Published: 2020-12-24 - Earliest claimed: 2018-02-22 - Assignees: Feelux Co., Ltd. - Applicants: Feelux Co., Ltd. - Inventors: Bum Yeon CHO; Gil Hun SHIN - Web page: https://patentgrep.com/patent/US20200400291A1 ## CPC - F21V 21/096: Magnetic devices - F21V 21/35: with direct electrical contact between the supporting element and electric conductors running along the guiding element - F21V 21/005: for several lighting devices in an end-to-end arrangement, i.e. light tracks - H01R 13/6205: {Two-part coupling devices held in engagement by a magnet} - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## Abstract A lighting unit and rail type lighting device according to an embodiment of the present invention includes a body part having a body plate and a first guide part disposed on the top of the body plate in a lengthwise direction of the body plate, a magnet material accommodation part disposed at an upper portion of the body part to accommodate a magnet material magnetically coupled with a rail unit; and a body-coupling part that is slide-coupled to each of both ends of the body part along the first guide part. ## Claims ### Claim 1 A lighting unit comprising: a body part comprising a body plate and a first guide part disposed on the top of the body plate in a lengthwise direction of the body plate; a magnet material accommodation part disposed at an upper portion of the body part to accommodate a magnet material magnetically coupled with a rail unit; and a body-coupling part that is slide-coupled to each of both ends of the body part along the first guide part. ### Claim 2 (depends on 1) The lighting unit of claim 1, wherein a protruding part that protrudes toward the rail unit is disposed at a central portion of the body part, the body-coupling part has the bottom that closely contacts one end of the body part and the top that protrudes from the body part to the magnet material accommodation part, and a distance between the one end of the body part to an end of the top of the body-coupling part is equal to or less than that between the one end of the body part to one end of the protruding part. ### Claim 3 (depends on 1) The lighting unit of claim 1, wherein the rail unit comprises a coupling projection part that protrudes toward the lighting unit, and the lighting unit further comprises a rail coupling part fixed to the body-coupling part and coupled with the coupling projection part. ### Claim 4 (depends on 3) The lighting unit of claim 3, wherein the rail coupling part comprises: a basic frame seated on an end of the body-coupling part and comprising a projection part insertion groove to which the coupling projection part is inserted; a connection part disposed on one surface of the basic frame; and a first elastic coupling part disposed on an end of the connection part and to which the coupling projection part is inserted and coupled. ### Claim 5 (depends on 4) The lighting unit of claim 4, wherein the first elastic coupling part comprises a first-1 elastic coupling part and a first-2 elastic coupling part, the basic frame comprises a first basic frame, a second basic frame that protrudes from one side of one surface of the first basic frame, and a third basic frame that protrudes from the other side of the one surface of the first basic frame, and the connection part comprises a first connection part disposed inward from the bottom of the second basic frame to connect the second basic frame and the first-1 elastic coupling part and a second connection part disposed inward from the bottom of the third basic frame to connect the third basic frame and the first-2 elastic coupling part. ### Claim 6 (depends on 4) The lighting unit of claim 4, wherein the rail coupling part is pressed from an upper portion to a lower portion of an end of the body-coupling part and coupled with the body-coupling part, and the lighting unit comprises a second elastic coupling part disposed on each of both sides of the basic frame; and a catching hole defined in each of both side surfaces of the body-coupling part and to which the second elastic coupling part is inserted and caught. ### Claim 7 (depends on 1) The lighting unit of claim 1, wherein the magnet material accommodation part is slide-coupled to the top of the body part along the first guide part. ### Claim 8 (depends on 1) The lighting unit of claim 1, wherein the body part is made of a metal material, the magnet material accommodation part is made of an insulating material, and the magnet material is electrically insulated from the body part by the magnet material accommodation part. ### Claim 9 (depends on 1) The lighting unit of claim 1, wherein the first guide part protrudes upward from each of both sides of the body plate, the lighting unit comprises a first-1 guide groove defined in an inside of the first guide part in a lengthwise direction of the first guide part and a first-2 guide groove defined in an outside of the first guide part in the lengthwise direction of the first guide part, and the magnet material accommodation part has an inner space to which the first guide part is inserted and both side bottoms that are inserted to and slid along the first-1 guide groove and first-2 guide groove, respectively. ### Claim 10 (depends on 1) The lighting unit of claim 1, wherein the lighting unit further comprises a connection part that is electrically connected to a conductive line of the rail unit, and the top of the connection part has a height greater than that of the magnet material. ### Claim 11 (depends on 1) The lighting unit of claim 1, wherein the lighting unit further comprises: a first connection part that is electrically connected to a first conductive line of the rail unit; and a second connection part that is electrically connected to a second conductive line of the rail unit. ### Claim 12 (depends on 11) The lighting unit of claim 11, wherein the lighting unit further comprises: a body-coupling part that is slide-coupled to each of both ends of the body part along the first guide part; a first accommodation hole defined in the body-coupling part to accommodate the first connection part; and a second accommodation hole defined in the body part to accommodate the second connection part. ### Claim 13 (depends on 12) The lighting unit of claim 12, wherein the body-coupling part comprises: a base plate disposed along a lengthwise direction of the lighting unit; a first side plate disposed at one side of the base plate; a second side plate disposed at the other side of the base plate; and a guide coupling part that protrudes from the tops of the first side plate and the second side plate to the body part and is slide-coupled to the first guide part. ### Claim 14 (depends on 13) The lighting unit of claim 13, wherein the body-coupling part further comprises a third accommodation hole disposed in communication with the second accommodation hole in the guide coupling part to expose the top of the second connection part. ### Claim 15 (depends on 13) The lighting unit of claim 13, wherein the body-coupling part comprises: a protruding connection part that protrudes toward the first accommodation hole from an inside of the base plate; a vertical part disposed perpendicularly to an end of the protruding connection part in an upward direction; and a cover part that protrudes from an end of the vertical part to the first connection part to cover the top of the first connection part. ### Claim 16 (depends on 1) The lighting unit of claim 1, wherein the body part and the magnet material accommodation part are integrated with each other, and each of the body part and the magnet material accommodation part is made of an insulating material. ### Claim 17 A lighting unit that is coupled with a rail unit, in which a coupling projection part protrudes from one surface thereof and at least one conductive line is disposed along a lengthwise direction thereof, and is electrically connected to the rail unit, comprising: a body part; a lighting part disposed at a lower portion of the body part; one pair of body-coupling parts coupled to both ends of the body part, respectively; a rail coupling part fixed to the body-coupling part and coupled with the coupling projection part; a magnet material accommodation part disposed between the one pair of body-coupling parts on the top of the body part; and a magnet material accommodated in the magnet material accommodation part and magnetically coupled with the conductive line. ### Claim 18 A rail type lighting device comprising: a mounting unit mounted to an installation surface; a rail unit coupled with the mounting unit and disposed in a lengthwise direction of the mounting unit; and a lighting unit that is coupled with the rail unit, electrically connected with the rail unit, and movable along the rail unit, wherein the rail unit comprises: a rail body coupled with the mounting unit inside the mounting unit; a coupling projection part that protrudes from one surface of the rail body; and a conductive line disposed along a lengthwise direction of the rail body on at least one of both side surfaces of the coupling projection part and one surface of the rail body, and the lighting unit comprises: a body part; a magnet material accommodation part disposed at an upper portion of the body part; a magnet material accommodated in the magnet material accommodation part and magnetically coupled with the conductive line; and a lighting part connected to the body part and configured to receive power from the conductive line. ### Claim 19 (depends on 18) The rail type lighting device of claim 18, wherein the body part comprises a body plate and a first guide part disposed in a lengthwise direction of the body plate on the top of the body plate, and the lighting unit further comprises a body-coupling part that is slide-coupled to each of both ends of the body part along the first guide part. ### Claim 20 (depends on 19) The rail type lighting device of claim 19, wherein the lighting unit further comprises a rail coupling part fixed to the body-coupling part and coupled with the coupling projection part.