# US 2018/0320829 A1 · Led light bulb > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0320829 A1 - Document ID: US20180320829A1 - Status: Published application - Kind: A1 - Application number: 15/772,449 - Filed: 2017-06-29 - Published: 2018-11-08 - Earliest claimed: 2016-06-30 - Assignees: Zhejiang Shenghui Lighting Co., Ltd - Applicants: Zhejiang Shenghui Lighting Co., Ltd. - Inventors: Yehua WAN; Linzhang LIU - Web page: https://patentgrep.com/patent/US20180320829A1 ## CPC - F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb - F21K 9/238: Arrangement or mounting of circuit elements integrated in the light source - F21V 3/061: {the material being glass} - F21V 23/006: {the substrate being distinct from the light source holder} - F21V 29/70: characterised by passive heat-dissipating elements, e.g. heat-sinks - F21V 29/86: {Ceramics or glass} - F21V 29/87: Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor - F21V 29/89: Metals - F21Y 2107/40: on the sides of polyhedrons, e.g. cubes or pyramids - F21Y 2107/60: on stacked substrates - F21Y 2107/70: on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form - F21Y 2115/10: Light-emitting diodes [LED] - F21Y 2115/15: Organic light-emitting diodes [OLED] - 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 - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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 light bulb comprises at least one LED light source; a driver arranged in an electrical connection with the LED light source to drive and control the LED light source to emit light; a base electrically connecting the driver to an outside power source; a heat sink provided to dissipate heat generated by the LED light source, having a supporting portion to receive and support the LED light source; a housing joined to the base to accommodate the LED light source, the heat sink and the driver to integrate as a whole. The present disclosure provides an LED light bulb which has an appearance of the traditional incandescent light bulb. ## Claims ### Claim 1 An LED light bulb, comprising: at least one LED light source including a plurality of LED chips; a driver arranged in an electrical connection with the LED light source to drive and control the LED light source to emit light; a base electrically connecting the driver to an outside power source; a heat sink provided to dissipate heat generated by the LED light source, comprising a supporting portion to support the LED light source; and a housing coupled to the base to accommodate the LED light source, the heat sink and the driver to integrate as the claimed LED light bulb. ### Claim 2 (depends on 1) The LED light bulb according to claim 1, wherein the LED light source comprises a first LED strip and a second LED strip, wherein: the first LED strip includes a first middle portion and first wings folded and positioned at two sides of the first middle portion, and the LED chips are placed on the first wings; the second LED strip includes a second middle portion and second wings folded and positioned at two sides of the second middle portion, and the LED chips are placed on the second wings; and the first LED strip and the second LED strip are stacked and electrically connected at the first and second middle portions. ### Claim 3 (depends on 2) The LED light bulb according to claim 2, wherein the first wings and the first middle portion are approximately perpendicular, and the second wings and the second middle portion are approximately perpendicular. ### Claim 4 (depends on 2) The LED light bulb according to claim 2, wherein the first LED strip and the second LED strip are stacked at the first and second middle portions, and a middle portion is exposed and in contact with a LED chip. ### Claim 5 (depends on 4) The LED light bulb according to claim 4, wherein the first LED strip is stacked on top of the second LED strip, and the first middle portion includes a hollow-out to expose the LED chip of the second middle portion at bottom. ### Claim 6 (depends on 2) The LED light bulb according to claim 2, wherein the first middle portion, the first wings, the second middle portion and the second wings are rectangular. ### Claim 7 (depends on 2) The LED light bulb according to claim 2, wherein the first LED strip further includes a first flexible circuit board, two sides of the first middle portion are spaced from the first wings, and the first middle portion and the first wings are connected by the first flexible circuit board. ### Claim 8 (depends on 2) The LED light bulb according to claim 2, wherein the second LED strip further includes a second flexible board, two sides of the second middle portion are spaced from the second wings, and the second middle portion and the second wings are connected by the second flexible circuit board. ### Claim 9 (depends on 1) The LED light bulb according to claim 1, wherein the supporting portion is a rectangular prism including at least two faces in contact with the LED light source for supporting the LED light source. ### Claim 10 (depends on 1) The LED light bulb according to claim 1, wherein the heat sink has a hole in its body, the LED light source comprises a pin socket electrically connecting the LED chips, and the driver comprises pins so that the pins pass through the hole and are inserted into the pin socket to form an electrical connection between the LED light source and the driver. ### Claim 11 (depends on 1) The LED light bulb according to claim 1, wherein the heat sink further comprises two guiding grooves on an inner wall to receive and fasten two sides of the driver. ### Claim 12 (depends on 1) The LED light bulb according to claim 1, further comprising a protection cover, wherein the protection cover includes a body and hook slots at two ends of the body, and two sides of the driver are inserted into the hook slots of the protection cover. ### Claim 13 (depends on 1) The LED light bulb according to claim 1, wherein the housing is non-transparent and made of glass. ### Claim 14 (depends on 1) The LED light bulb according to claim 1, wherein the housing and the base are glued together. ### Claim 15 (depends on 1) The LED light bulb according to claim 1, wherein the heat sink is made of a thermal-conducting plastic, and the heat sink is joined to the base. ### Claim 16 (depends on 1) The LED light bulb according to claim 1, further comprising an insulator disposed at one end of the heat sink, wherein the heat sink is made of a thermal-conducting metal, and the insulator and the base are joined to provide an electrical insulation between the heat sink and the base. ### Claim 17 (depends on 16) The LED light bulb according to claim 16, wherein the insulator and the heat sink are combined by a plastic-aluminum injection molding process.