# US 9,752,768 B2 · LED lighting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,768 B2 - Document ID: US9752768B2 - Status: Granted - Kind: B2 - Application number: 14/552,356 - Filed: 2014-11-24 - Published: 2016-01-07 - Granted: 2017-09-05 - Earliest claimed: 2014-07-04 - Assignees: Kmw Inc. - Applicants: Kmw Inc. - Inventors: Dong-Sik Roh; Duk-Yong Kim; Jong-Ju Han; Tai-Sun Kim; Joon-Hong Park; Chan-Kyu Yoo - Web page: https://patentgrep.com/patent/US9752768B2 ## CPC - F21V 29/76: with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section - F21S 8/03: {of surface-mounted type (F21S8/02, F21S8/04 take precedence; details of wall or floor bases F21V21/02)} - F21S 8/086: {with lighting device attached sideways of the standard, e.g. for roads and highways} - F21V 7/0016: {on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes} - F21V 7/04: Optical design - F21V 23/008: {the casing being outside the housing of the lighting device} - F21V 23/009: {the casing being inside the housing of the lighting device} - F21V 23/023: {Power supplies in a casing (F21V23/003 takes precedence)} - F21V 23/06: the elements being coupling devices {, e.g. connectors} - F21V 29/508: of electrical circuits - F21V 29/763: {the planes containing the fins or blades having the direction of the light emitting axis} - F21W 2131/103: of streets or roads - F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements - F21Y 2107/10: on concave supports or substrates, e.g. on the inner side of bowl-shaped supports - 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 - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - 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 An LED lighting device includes a case unit forming a light emitting space, wherein resting surfaces are formed at predetermined areas on the inner side of the case unit, substrates having LEDs mounted thereon and respectively rested on the plurality of resting surfaces, and heat-dissipating units formed in the outer side of the case unit for heat dissipation. Lifespan and user convenience can be improved. ## Claims ### Claim 1 An LED lighting device comprising: a case unit forming a light emitting space, wherein a plurality of resting surfaces are formed at predetermined areas on the inner side of the edge of the case unit; a plurality of substrates respectively rested on the plurality of resting surfaces, wherein a plurality of LEDs that emit light in an inward direction of the case are mounted on each of the plurality of substrates; a plurality of heat-dissipating units formed in the outer side of the case unit for heat dissipation; and a reflection unit inserted in the case unit, and configured to reflect light emitted from the LEDs mounted on the plurality of substrates so that the reflected light is emitted through the light emitting space, wherein the reflection unit includes curved reflection parts for reflecting light emitted from the LEDs, respectively and a partition part positioned between the reflection parts for preventing light reflected respectively from the reflection parts from traveling to the opposite sides. ### Claim 2 (depends on 1) The LED lighting device of claim 1, wherein the reflection unit comprises a plurality of reflection parts having a predetermined curvature or curvatures and having upwardly convex surfaces in the light emitting space. ### Claim 3 (depends on 1) The LED lighting device of claim 1, further comprising a power supply unit attached to the inner side of the case unit at a predetermined location above the reflection unit, wherein a heat-dissipating unit is provided in the outer side of the case unit at a location to dissipate heat generated by the power supply unit. ### Claim 4 (depends on 3) The LED lighting device of claim 3, wherein the heat-dissipating units that dissipate heat from the plurality of substrates are separate from the heat-dissipating unit that dissipate heat from the power supply unit. ### Claim 5 (depends on 4) The LED lighting device of claim 4, wherein each of the heat-dissipating units is composed of a plurality of heat-dissipating fins arranged vertically, and a support part to be connected to at least one of ends of the plurality of heat-dissipating fins. ### Claim 6 (depends on 4) The LED lighting device of claim 4, wherein a connecting unit to connect the case unit to an external item is provided at one end of the case unit. ### Claim 7 (depends on 1) The LED lighting device of claim 1, further comprising a connecting casing provided in an end of the case unit, and configured to accommodate a power supply unit. ### Claim 8 (depends on 7) The LED lighting device of claim 7, wherein the connecting casing comprises a door that can be opened and closed. ### Claim 9 (depends on 1) The LED lighting device of claim 1, further comprising a connecting casing in which a power supply unit is installed, wherein the case unit is fixed at each of both sides of the connecting casing. ### Claim 10 (depends on 9) The LED lighting device of claim 9, wherein the connecting casing comprises a removable cover.