# US 2013/0155720 A1 · Illuminating device, display device, and television receiving device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0155720 A1 - Document ID: US20130155720A1 - Status: Published application - Kind: A1 - Application number: 13/816,765 - Filed: 2011-06-09 - Published: 2013-06-20 - Earliest claimed: 2010-08-20 - Assignees: Sharp Kabushiki Kaisha - Inventors: Yasumori Kuromizu - Web page: https://patentgrep.com/patent/US20130155720A1 ## CPC - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B 6/009: {of the light source in the package (G02B6/0021 takes precedence)} - G02B 6/0073: {Light emitting diode [LED]} - G02B 6/0085: {Means for removing heat created by the light source from the package} - G02F 1/133615: {Edge-illuminating devices, i.e. illuminating from the side} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract Provided is an illuminating device capable of uniformalizing intensity distribution in a plane of light that is emitted to the outside even when a light source includes a non-emitting portion or a low reflective portion. The illuminating device includes alight source including a plurality of light-emitting elements, and a light guide member including an entrance face opposing the light source, from which light emitted from the light source enters the inside of the light guide member, wherein the light source includes a non-emitting portion where the light-emitting elements are not disposed, and wherein light projected from a portion of the light source, the portion being close to the non-emitting portion, onto the entrance face of the light guide member is higher in intensity than light projected from the other portion of the light source onto the entrance face of the light guide member. ## Claims ### Claim 1 An illuminating device comprising: a light source comprising: a board; and a plurality of light-emitting elements mounted on the board; and a light guide member comprising an entrance face opposing the light source, from which light emitted from the light source enters the inside of the light guide member, wherein the light source comprises a non-emitting portion where the light-emitting elements are not disposed, and wherein light projected from a portion of the light source, the portion being close to the non-emitting portion, onto the entrance face of the light guide member is higher in intensity than light projected from the other portion of the light source onto the entrance face of the light guide member. ### Claim 2 (depends on 1) The illuminating device according to claim 1, wherein a space between the light-emitting elements on the portion close to the non-emitting portion is smaller than a space between the light-emitting elements on the other portion. ### Claim 3 (depends on 1) The illuminating device according to claim 1, wherein spaces between the light-emitting elements get smaller as the light-emitting elements get closer to the non-emitting portion. ### Claim 4 (depends on 1) The illuminating device according to claim 1, wherein one or more light-emitting elements close to the non-emitting portion are arranged to emit light higher in intensity than the light-emitting elements on the other portion. ### Claim 5 (depends on 4) The illuminating device according to claim 4, wherein the light-emitting elements comprise LED packages comprising LED chips, and wherein the number of each LED chip included in the one or more light-emitting elements close to the non-emitting portion is larger than the number of each LED chip included in the other light-emitting elements. ### Claim 6 (depends on 4) The illuminating device according to claim 4, wherein the light-emitting elements comprise light-emitting elements arranged to emit different kinds of light that are different in intensity, and wherein the one or more light-emitting elements close to the non-emitting portion comprise the light-emitting elements arranged to emit the light higher in intensity than the light-emitting elements on the other portion. ### Claim 7 (depends on 1) The illuminating device according to claim 1, wherein electric power supplied to the one or more light-emitting elements close to the non-emitting portion is higher than electric power that is supplied to the light-emitting elements on the other portions. ### Claim 8 (depends on 1) The illuminating device according to claim 1, wherein the one or more light-emitting elements close to the non-emitting portion comprise cooling mechanisms. ### Claim 9 (depends on 1) The illuminating device according to claim 1, wherein the light source comprises a plurality of light sources disposed side by side, and wherein each non-emitting portion comprises at least one of: a printed identification character disposed on each board; a screw arranged to fix each board; a power supply connector disposed on each board; and a space between the boards. ### Claim 10 An illuminating device comprising: a light source comprising a plurality of light-emitting elements; and a light guide member comprising an entrance face opposing the light source, from which light emitted from the light source enters the inside of the light guide member, wherein the light source comprises a low reflective portion that has a lower reflectivity than the other portion, and wherein light projected from a portion of the light source, the portion being close to the low reflective portion, onto the entrance face of the light guide member is higher in intensity than light projected from the other portion of the light source onto the entrance face of the light guide member. ### Claim 11 (depends on 10) The illuminating device according to claim 10, wherein a space between the light-emitting elements on the portion close to the low reflective portion is smaller than a space between the light-emitting elements on the other portion. ### Claim 12 (depends on 10) The illuminating device according to claim 10, wherein spaces between the light-emitting elements get smaller as the light-emitting elements get closer to the low reflective portion. ### Claim 13 (depends on 10) The illuminating device according to claim 10, wherein one or more light-emitting elements close to the low reflective portion are arranged to emit light higher in intensity than the light-emitting elements on the other portion. ### Claim 14 (depends on 13) The illuminating device according to claim 13, wherein the light-emitting elements comprise LED packages comprising LED chips, and wherein the number of each LED chip included in the one or more light-emitting elements close to the low reflective portion is larger than the number of each LED chip included in the other light-emitting elements. ### Claim 15 (depends on 13) The illuminating device according to claim 13, wherein the light-emitting elements comprise light-emitting elements arranged to emit different kinds of light that are different in intensity, and wherein the one or more light-emitting elements close to the low reflective portion comprise the light-emitting elements arranged to emit the light higher in intensity than the light-emitting elements on the other portion. ### Claim 16 (depends on 10) The illuminating device according to claim 10, wherein the light source comprises a plurality of light sources that are disposed side by side and comprise boards, and wherein each low reflective portion comprises at least one of: a printed identification character disposed on each board; a screw arranged to fix each board; a power supply connector disposed on each board; and a space between the boards. ### Claim 17 (depends on 1) The illuminating device according to claim 1, wherein the light source comprises a linear light source, and the light guide member comprises an optical member arranged to convert light emitted from the light source into planar light to emit the planar light to the outside. ### Claim 18 (depends on 17) The illuminating device according to claim 17, wherein the board of the light source has a long and narrow strip shape, and wherein the light-emitting elements are disposed in series in a longitudinal direction of the board. ### Claim 19 (depends on 17) The illuminating device according to claim 17, wherein the light sources surround a periphery of the optical member. ### Claim 20 (depends on 17) The illuminating device according to claim 17, wherein the light sources are disposed at positions opposing each other while sandwiching the optical member. ### Claim at position 21 21-29. (canceled)