# US 10,371,351 B2 · Illumination device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,351 B2 - Document ID: US10371351B2 - Status: Granted - Kind: B2 - Application number: 15/599,609 - Filed: 2017-05-19 - Published: 2018-05-10 - Granted: 2019-08-06 - Earliest claimed: 2016-11-04 - Assignees: Lite-On Electronics (Guangzhou) Limited; Lite-On Technology Corporation - Applicants: Lite-On Electronics (Guangzhou) Limited; Lite-On Technology Corporation - Inventors: Bing-Yu Wu - Web page: https://patentgrep.com/patent/US10371351B2 ## CPC - F21V 7/0083: {Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane (combination of two or more reflectors F21V7/0025)} - F21S 8/046: {having multiple lighting devices, e.g. connected to a common ceiling base} - F21V 7/0008: {providing for indirect lighting} - F21V 7/0025: {Combination of two or more reflectors for a single light source (array of reflectors for a cluster of light sources F21V7/0083)} - F21V 7/04: Optical design - F21V 7/05: plane - F21V 23/009: {the casing being inside the housing of the lighting device} - F21V 29/503: of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858) - F21V 7/0058: {adapted to cooperate with light sources of shapes different from point-like or linear, e.g. circular light sources} - F21Y 2109/00: Light sources with light-generating elements disposed on transparent or translucent supports or substrates - 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 - 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 illumination device including an upper casing, a transparent bottom casing, a light source module and a reflection layer is provided. The upper casing has a lower surface. The transparent bottom casing has an upper surface. The light source module is disposed on the lower surface of the upper casing. The reflection layer is extended between the upper surface of the transparent bottom casing and the lower surface of the upper casing for reflecting the light emitted by the light source module. ## Claims ### Claim 1 An illumination device, comprising: an upper casing having a lower surface; a transparent bottom casing having an upper surface; a light source module disposed on the lower surface of the upper casing; and a first reflection layer directly connected to the lower surface of the upper casing and the upper surface of the transparent bottom casing for reflecting the light emitted by the light source module, wherein the light source module comprises a plurality of light sources, an optical axis direction of each light emitted from the plurality of light sources directly intersects with the first reflection layer, wherein the upper casing further includes a plurality of thermal fins whose end faces define the lower surface of the upper casing and the light source module is disposed on the end faces of the thermal fins. ### Claim 2 (depends on 1) The illumination device according to claim 1, wherein the plurality of light sources are disposed adjacent to the first reflection layer. ### Claim 3 (depends on 1) The illumination device according to claim 1, wherein the light source module is directly disposed on the lower surface. ### Claim 4 (depends on 1) The illumination device according to claim 1, wherein an acute angle is included between the upper surface and the lower surface. ### Claim 5 (depends on 1) The illumination device according to claim 1, further comprising: a first side casing connecting between the upper casing and the transparent bottom casing and having a first inner lateral surface; and a second reflection layer disposed on the first inner lateral surface for reflecting the light emitted by the light source module. ### Claim 6 (depends on 5) The illumination device according to claim 5, further comprising: a second side casing disposed opposite to the first side casing, connecting between the upper casing and the transparent bottom casing and having a second inner lateral surface; and a third reflection layer disposed on the second inner lateral surface for reflecting the light emitted by the light source module. ### Claim 7 (depends on 1) The illumination device according to claim 1, wherein there is a first space among a front section of the upper casing, the first reflection layer and a front section of the transparent bottom casing, and the light source module is disposed in the first space. ### Claim 8 (depends on 1) The illumination device according to claim 1, further comprising: a rear casing, wherein there is a second space among the first reflection layer, a rear section of the upper casing and a rear section of the transparent bottom casing; and a control module disposed within the second space for controlling the light source module. ### Claim 9 (depends on 1) The illumination device according to claim 1, wherein the first reflection layer has a plurality of plane reflective surfaces forming different angles with a normal direction of the upper surface. ### Claim 10 (depends on 1) The illumination device according to claim 1, wherein the first reflection layer has a curved reflective surface formed of more than one reflective surface having different curvatures. ### Claim 11 (depends on 1) The illumination device according to claim 1, wherein the upper surface of the transparent bottom casing is horizontal and the lower surface of the upper casing is an inclined surface with respect to the upper surface of the of the transparent bottom casing.