# US 10,502,371 B2 · LED-lamp > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,371 B2 - Document ID: US10502371B2 - Status: Granted - Kind: B2 - Application number: 16/148,248 - Filed: 2018-10-01 - Published: 2019-04-04 - Granted: 2019-12-10 - Earliest claimed: 2017-09-30 - Assignees: Ledvance GmbH - Applicants: LEDVANCE GmbH - Inventors: Jin Hu; Tianzheng Jiang; Bernhard Rieder; Yonggang Xiao - Web page: https://patentgrep.com/patent/US10502371B2 ## CPC - F21K 9/275: Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings (F21K9/278 takes precedence) - F21K 9/272: Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts (F21K9/278 takes precedence) - F21K 9/278: Arrangement or mounting of circuit elements integrated in the light source - F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer - 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) - F21Y 2103/10: comprising a linear array of point-like light-generating elements - 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 lamp includes a substantially transparent housing tube, a first end cap at a first end of the housing tube and a second end cap at a second end of the housing tube. The end caps include contacts for electrically contacting a power supply. An LED-filament is arranged in the housing tube between the first end cap and the second end cap. ## Claims ### Claim 1 A lamp comprising: a substantially transparent housing tube; a first end cap at a first end of the housing tube; a second end cap at a second end of the housing tube, wherein the end caps include contacts for electrically contacting a power supply; and a light emitting diode (LED)-filament arranged in the housing tube between the first end cap and the second end cap; wherein at least one driver for the LED-filament is provided, wherein a first driver is arranged at the first end cap and a second driver is arranged at the second end cap. ### Claim 2 (depends on 1) The lamp according to claim 1, wherein a plurality of LED-filaments is arranged between the first end cap and the second end cap, the LED-filaments being positioned substantially parallel to each other. ### Claim 3 (depends on 2) The lamp according to claim 2, wherein a plurality of housing tubes is arranged between the first end cap and the second end cap, wherein each LED-filament is arranged in a separate housing tube. ### Claim 4 (depends on 1) The lamp according to claim 1, wherein the housing tube is substantially cylindrical. ### Claim 5 (depends on 1) The lamp according to claim 1, wherein the LED-filament comprises at least 10 LED spots connected in series, and wherein the LED-filament comprises a base substrate made of a glass or sapphire material. ### Claim 6 (depends on 1) The lamp according to claim 1, wherein the LED-filament comprises a fluorescence layer, wherein the fluorescence layer comprises: at least one of yttrium aluminum garnet, cerium (Ce)-doped yttrium aluminum garnet and a phosphor; and a silicone resin binder material. ### Claim 7 (depends on 1) The lamp according to claim 1, wherein a connection unit for electrical connection is provided between the first end cap and the second end cap, wherein the connection unit comprises at least two wires which are burned in a glass substrate. ### Claim 8 (depends on 1) The lamp according to claim 1, wherein a high thermal conductivity gas for heat dissipation from at least one LED-filament is provided in the housing tube. ### Claim 9 (depends on 1) The lamp according to claim 1, wherein the first end cap and the second end cap comprise an R7S lamp base. ### Claim 10 (depends on 1) The lamp according to claim 1, wherein the lamp is configured to replace an R7S double-ended linear halogen lamp. ### Claim 11 (depends on 1) The lamp according to claim 1, wherein a radial extension of the lamp is equal to or smaller than 12 mm. ### Claim 12 (depends on 1) The lamp according to claim 1, wherein the housing tube is made of glass. ### Claim 13 A lamp comprising: a substantially transparent housing tube; a first end cap at a first end of the housing tube; a second end cap at a second end of the housing tube, wherein the end caps include contacts for electrically contacting a power supply; and a light emitting diode (LED)-filament arranged in the housing tube between the first end cap and the second end cap; wherein a high thermal conductivity gas for heat dissipation from at least one LED-filament is provided in the housing tube. ### Claim 14 (depends on 13) The lamp according to claim 13, wherein a plurality of LED-filaments is arranged between the first end cap and the second end cap, the LED-filaments being positioned substantially parallel to each other. ### Claim 15 (depends on 14) The lamp according to claim 14, wherein a plurality of housing tubes is arranged between the first end cap and the second end cap, wherein each LED-filament is arranged in a separate housing tube. ### Claim 16 (depends on 13) The lamp according to claim 13, wherein the housing tube is substantially cylindrical. ### Claim 17 (depends on 13) The lamp according to claim 13, wherein the first end cap and the second end cap comprise an R7S lamp base. ### Claim 18 (depends on 13) The lamp according to claim 13, wherein the lamp is configured to replace an R7S double-ended linear halogen lamp. ### Claim 19 (depends on 13) The lamp according to claim 13, wherein a radial extension of the lamp is equal to or smaller than 12 mm. ### Claim 20 (depends on 13) The lamp according to claim 13, wherein the housing tube is made of glass.