# US 7,744,236 B2 · Underwater lamp > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,236 B2 - Document ID: US7744236B2 - Status: Granted - Kind: B2 - Application number: 12/170,771 - Filed: 2008-07-10 - Published: 2009-06-18 - Granted: 2010-06-29 - Earliest claimed: 2007-12-18 - Assignees: Foxsemicon Integrated Technology, Inc. - Inventors: Hung-Kuang Hsu; Chun-Wei Wang - Web page: https://patentgrep.com/patent/US7744236B2 ## CPC - F21V 29/763: {the planes containing the fins or blades having the direction of the light emitting axis} - F21S 8/00: Lighting devices intended for fixed installation (F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00) - F21V 5/04: of lens shape - F21V 29/58: characterised by the coolants - F21V 29/74: with fins or blades - F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes - F21V 31/005: {Sealing arrangements therefor} - F21V 29/507: of means for protecting lighting devices from damage, e.g. housings - F21W 2121/02: for fountains - F21W 2131/308: for aquaria - F21W 2131/401: for swimming pools - F21Y 2115/10: Light-emitting diodes [LED] - Y10S 362/80: Light emitting diode - 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 - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - 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 - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract An underwater lamp includes a cylindrical shaped shell with two opposite ends being open, a lens being received at one of the two opposite ends of the shell, and a sink base attaching to the other one of the two opposite ends of the shell. An interior space is defined among the shell, the sink base, and the lens. A light generating element for emitting light is received in the interior space and thermally attached to the sink base. The light generating element has an emitting surface facing the lens. At least one opening is defined in the lamp for fluid flowing into the interior space. ## Claims ### Claim 1 An underwater lamp, comprising: a light generating element for emitting light, the light generating element having a light emitting surface; a shell; a lens being received at one end of the shell, wherein the shell and the lens cooperatively define an interior space; the interior space receiving the light generating element therein; the lens facing the light emitting surface; and at least one opening being defined in one of the shell and the lens of the underwater lamp to intercommunicate the interior space with an exterior of the underwater lamp. ### Claim 2 (depends on 1) The underwater lamp of claim 1, further comprising a sink base attached to another end of the shell opposite to the lens, wherein the light generating element is fixedly attached to the sink base, forming a heat conduction path. ### Claim 3 (depends on 2) The underwater lamp of claim 2, further comprising a plurality of fins integrally formed with the sink base and extending away from the sink base. ### Claim 4 (depends on 2) The underwater lamp of claim 2, wherein the light generating element comprises at least one light emitting diode; the at least one light emitting diode comprising a light emitting diode die and a packaging layer encapsulating the light emitting diode die. ### Claim 5 (depends on 2) The underwater lamp of claim 2, wherein a waterproof layer is positioned on the sink base and forms a water tight seal around the light generating element to keep water from flowing to the light generating element. ### Claim 6 (depends on 5) The underwater lamp of claim 5, further comprising a sealing ring positioned between the sink base and the waterproof layer. ### Claim 7 (depends on 5) The underwater lamp of claim 5, wherein the waterproof layer is made of one of glass, acrylic, and polycarbonate. ### Claim 8 (depends on 1) The underwater lamp of claim 1, further comprising a convergent lens positioned on the light generating element, and located on the optical path of the light generating element. ### Claim 9 (depends on 1) The underwater lamp of claim 1, further comprising a filter positioned in the at least one opening to prevent pollutants from flowing into the interior space. ### Claim 10 (depends on 1) The underwater lamp of claim 1, wherein the at least one opening comprises a pair of openings defined in opposite sides of the shell. ### Claim 11 An underwater lamp, comprising: a cylindrical shaped shell with two opposite ends being open; a lens being arranged at one of the two opposite ends of the shell; a sink base fixedly attached to the other one of the two opposite ends of the shell; wherein the shell, the sink base, and the lens cooperatively define an interior space; a light generating element received in the interior space and fixedly attached to the sink base; and at least one opening being defined in the lamp for fluid flowing into the interior space. ### Claim 12 (depends on 11) The underwater lamp of claim 11, wherein the at least one opening is defined in one of the shell, the sink base, and the lens. ### Claim 13 (depends on 11) The underwater lamp of claim 11, further comprising a filter positioned in the at least one opening of the lamp to keep pollutants from flowing into the interior space. ### Claim 14 (depends on 11) The underwater lamp of claim 11, further comprising a convergent lens positioned on the light generating element and located on the optical path of the light generating element. ### Claim 15 (depends on 11) The underwater lamp of claim 11, further comprising a waterproof layer positioned on the sink base and a sealing ring being positioned between the waterproof layer and the sink base, wherein the waterproof layer, the sealing ring, and the sink base form a water tight seal around the light generating element to keep water from flowing to the light generating element. ### Claim 16 (depends on 15) The underwater lamp of claim 15, wherein the waterproof layer is made of one of glass, acrylic, and polycarbonate. ### Claim 17 (depends on 11) The underwater lamp of claim 11, further comprising a plurality of fins extending away from the sink base. ### Claim 18 (depends on 11) The underwater lamp of claim 11, wherein the light generating element comprises at least one light emitting diode. ### Claim 19 (depends on 11) The underwater lamp of claim 11, wherein the light generating element is a bulb or a cold cathode fluorescent lamp.