# US 2019/0316741 A1 · Primary light distribution structure of directional light source > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0316741 A1 - Document ID: US20190316741A1 - Status: Published application - Kind: A1 - Application number: 16/131,948 - Filed: 2018-09-14 - Published: 2019-10-17 - Earliest claimed: 2018-04-11 - Assignees: Ningbo Yamao Optoelectronics Co., Ltd. - Applicants: Ningbo Yamao Optoelectronics Co., Ltd. - Inventors: Hui CHEN - Web page: https://patentgrep.com/patent/US20190316741A1 ## CPC - F21K 9/233: specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps - F21K 9/238: Arrangement or mounting of circuit elements integrated in the light source - F21V 5/007: {Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008)} - F21V 5/04: of lens shape - F21V 17/10: characterised by specific fastening means or way of fastening (F21V17/02 - F21V17/08 take precedence) - F21V 19/0055: {by screwing} - F21V 29/70: characterised by passive heat-dissipating elements, e.g. heat-sinks - F21V 29/89: Metals - F21Y 2115/10: Light-emitting diodes [LED] - 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 The present invention discloses a primary light distribution structure of a directional light source comprises a lamp cup, wherein the lamp cup is provided with a lamp cap at an end; a heat conducting plate, disposed inside the lamp cup and located at a middle portion of the lamp cup, the periphery of the heat conducting plate being in interference fit with and connection with the lamp cup; a power source, disposed inside the lamp cup and located between the lamp cup and the heat conducting plate, the power source being connected to the lamp cap; a light source plate, fixed to the heat conducting plate by means of a plurality of screws, the power source being electrically connected to the light source plate; and a lens structure, covering on the light source plate. In the present invention, the primary light distribution structure is configured such that a larger beam angle is available. ## Claims ### Claim 1 A primary light distribution structure of a directional light source, comprising: a lamp cup, the lamp cup being provided with a lamp cap at an end; a heat conducting plate, disposed inside the lamp cup and located at a middle portion of the lamp cup, the periphery of the heat conducting plate being in interference fit with and connection with the lamp cup; a power source, disposed inside the lamp cup and located between the lamp cup and the heat conducting plate, the power source being connected to the lamp cap; a light source plate, fixed to the heat conducting plate by means of a plurality of screws, the power source being electrically connected to the light source plate; and a lens structure, covering on the light source plate. ### Claim 2 (depends on 1) The primary light distribution structure of the directional light source as claimed in claim 1, wherein the lens structure comprises: a multi-point lens directly facing the light source plate; and a buckle fastened on the multi-point lens, a periphery of the buckle being fixedly connected to the other end of the lamp cup. ### Claim 3 (depends on 1) The primary light distribution structure of the directional light source as claimed in claim 1, wherein the lens structure comprises: a small lens facing the light source plate, comprising: a lens board taking the form of a circular plate, and a plurality of lens units connected to the lens board, each of the plurality of lens units having a circular table shape and having a convex arc surface; and a planar lens, covering on the small lens, a periphery of the planar lens being fixedly connected to the other end of the lamp cup. ### Claim 4 (depends on 1) The primary light distribution structure of the directional light source as claimed in claim 1, wherein the middle portion of the lamp cup extends inwardly to form a fixing plate, a periphery of the heat conducting plate being fixedly connected to the fixing plate. ### Claim 5 (depends on 2) The primary light distribution structure of the directional light source as claimed in claim 2, wherein the heat conducting plate is made from aluminum and has a smooth surface structure. ### Claim 6 (depends on 2) The primary light distribution structure of the directional light source as claimed in claim 2, wherein the plurality of screws are self-tapping screws. ### Claim 7 (depends on 3) The primary light distribution structure of the directional light source as claimed in claim 3, wherein the heat conducting plate is made from aluminum and has a smooth surface structure. ### Claim 8 (depends on 3) The primary light distribution structure of the directional light source as claimed in claim 3, wherein the plurality of screws are self-tapping screws.