# US 9,518,724 B2 · Light emitting device module array > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,518,724 B2 - Document ID: US9518724B2 - Status: Granted - Kind: B2 - Application number: 14/511,976 - Filed: 2014-10-10 - Published: 2015-05-21 - Granted: 2016-12-13 - Earliest claimed: 2013-11-20 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Jinsung Kwak; Junhyung Kim; Hongseok Kim; Yongjin Kim; Seoyoung Jeong - Web page: https://patentgrep.com/patent/US9518724B2 ## CPC - F21V 29/74: with fins or blades - F21K 9/00: Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers - F21K 9/20: Light sources comprising attachment means - F21V 5/04: of lens shape - F21V 21/00: Supporting, suspending, or attaching arrangements for lighting devices (F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00); Hand grips - F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes - F21W 2131/10: Outdoor lighting - F21W 2131/30: Lighting for domestic or personal use - F21W 2131/40: Lighting for industrial, commercial, recreational or military use - F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements - F21Y 2113/00: Combination of light sources - 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 - 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 module array includes a light emitting device module. The light emitting device module includes a light source unit, a body provided at one surface thereof with a seat on which the light source unit is seated, a plurality of radiation fins disposed on the other surface of the body opposite to one surface of the body, and an air hole perforated in the body from the seat to the radiation fins for the flow of air. ## Claims ### Claim 1 A module array comprising first and second light emitting device modules arranged adjacent to one another, each of the light emitting device modules comprising: a body having a first side and a second side opposite to the first side; a light source unit located at the first side of the body; a plurality of radiation fins located at the second side of the body; and an air hole perforated in the body and extending from the first side of the body to the second side of the body for the flow of air therethrough, wherein an air flow passage is defined between the first and second light emitting device modules to extend from the first side to the second side for the flow of air, wherein the air flow passage is defined between the bodies of the first and second light emitting device modules, wherein side surfaces of the bodies of the first and second light emitting device modules define a portion of the inner peripheral surface of the air flow passage, and further comprising at least two connection members configured to connect the bodies of the first and second light emitting device modules, wherein the two connection members are spaced apart from each other, and wherein side surfaces of the two connection members and the side surfaces of the bodies of the first and second light emitting device modules define the inner peripheral surface of the air flow passage. ### Claim 2 (depends on 1) The module array according to claim 1, wherein the connection members are located at the side surface of each body at positions proximate to corners of the body. ### Claim 3 (depends on 2) The module array according to claim 2, wherein the connection members are integrally formed with the body. ### Claim 4 (depends on 2) The module array according to claim 2, wherein each of the connection members includes: a slide groove formed in the body of the first light emitting device module; and a slide protrusion formed at the body of the second light emitting device module proximate to the first light emitting device module provided with the slide groove, the slide protrusion being configured to slide and be fitted into the slide groove. ### Claim 5 (depends on 4) The module array according to claim 4, wherein the slide protrusion is interference-fitted into the slide groove. ### Claim 6 A module array comprising first and second light emitting device modules arranged adjacent to one another, each of the light emitting device modules comprising: a body having a lower side and an upper side opposite to the lower side; a light source unit located at the lower side of the body; a plurality of radiation fins located at the upper side of the body; and a first passive airflow promotion channel extending through the body from the lower side of the body to the upper side of the body, the first passive airflow promotion channel being configured such that rising air heated by the light source unit at the lower side of the body is induced into the first passive airflow promotion channel for passage therethrough to a location at the upper side of the body, wherein a second passive airflow promotion channel is defined between the first and second light emitting device modules, the second passive airflow promotion channel being configured such that rising air heated by the light source unit at the lower side of the bodies is induced into the second passive airflow promotion channel for passage therethrough to a location at the upper side of the bodies, and wherein the body of the first light emitting device module includes a first side wall having a first recessed portion directed inwardly of the first side wall, the first recessed portion defining a first portion of the inner peripheral surface of the second passive airflow promotion channel. ### Claim 7 (depends on 6) The module array according to claim 6, wherein the body of the second light emitting device module includes a second side wall defining a second portion of the inner peripheral surface of the second passive airflow promotion channel. ### Claim 8 (depends on 6) The module array according to claim 6, wherein the body of the second light emitting device module includes a second side wall having a second recessed portion directed inwardly of the second side wall, the second recessed portion defining a second portion of the inner peripheral surface of the second passive airflow promotion channel. ### Claim 9 (depends on 6) The module array according to claim 6, further comprising at least two connection members configured to connect the bodies of the first and second light emitting device modules, wherein the two connection members are spaced apart from each other, and wherein side surfaces of the two connection members and side surfaces of the bodies of the first and second light emitting device modules define the inner peripheral surface of the second passive airflow promotion channel. ### Claim 10 (depends on 9) The module array according to claim 9, wherein each of the connection members includes: a slide groove formed in the body of the first light emitting device module; and a slide protrusion formed at the body of the second light emitting device module proximate to the first light emitting device module provided with the slide groove, the slide protrusion being configured to slide and be fitted into the slide groove. ### Claim 11 (depends on 6) The module array according to claim 6, wherein the first passive airflow promotion channel includes an air guide located at the upper side of the body and extending in a direction away from the upper side of the body, the air guide having a sidewall contacting a plurality of the radiation fins, the sidewall having a height extending along a majority of a height of the radiation fins. ### Claim 12 (depends on 6) The module array according to claim 6, wherein the first passive airflow promotion channel includes: an air hole perforated in the body and extending from the lower side of the body to the upper side of the body for the flow of air therethrough; and an air guide located at the upper side of the body and extending in a direction away from the upper side of the body, the air guide being in communication with the air hole to guide the flow of air therethrough. ### Claim 13 (depends on 12) The module array according to claim 12, wherein the light source unit includes: a plurality of boards located at the upper side of the body, each board including a light emitting device disposed on the board, and wherein the air hole is located between at least two of the boards. ### Claim 14 (depends on 12) The module array according to claim 12, wherein the light source unit includes: a first board located at the first side of the body; a second board located at the first side of the body; a first plurality of light emitting devices disposed on the first board; and a second plurality of light emitting devices disposed on the second board, wherein the air hole is located between the first board and the second board. ### Claim 15 A module array comprising first and second light emitting device modules arranged adjacent to one another, each of the light emitting device modules comprising: a body having a lower side and an upper side opposite to the lower side; a light source unit located at the lower side of the body; a plurality of radiation fins located at the upper side of the body; and a first passive airflow promotion channel extending through the body from the lower side of the body to the upper side of the body, the first passive airflow promotion channel being configured such that rising air heated by the light source unit at the lower side of the body is induced into the first passive airflow promotion channel for passage therethrough to a location at the upper side of the body, wherein a second passive airflow promotion channel is defined between the first and second light emitting device modules, the second passive airflow promotion channel being configured such that rising air heated by the light source unit at the lower side of the bodies is induced into the second passive airflow promotion channel for passage therethrough to a location at the upper side of the bodies, wherein the first passive airflow promotion channel includes: an air hole perforated in the body and extending from the lower side of the body to the upper side of the body for the flow of air therethrough; and an air guide located at the upper side of the body and extending in a direction away from the upper side of the body, the air guide being in communication with the air hole to guide the flow of air therethrough, wherein the light source unit includes: a board located at the upper side of the body; a plurality of light emitting devices disposed on the board; a board hole extending through the board, the board hole being in communication with the air hole; a plurality of lenses configured to shield the light emitting devices and to refract light emitted from the light emitting devices; a lens cover supporting the lenses, the lens cover having a shape generally corresponding to a shape of the board; and a cover hole extending through the lens cover, the cover hole being in communication with the air hole.