# US 10,924,832 B2 · Light and loudspeaker driver device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,924,832 B2 - Document ID: US10924832B2 - Status: Granted - Kind: B2 - Application number: 16/231,315 - Filed: 2018-12-21 - Published: 2019-05-16 - Granted: 2021-02-16 - Earliest claimed: 2015-02-27 - Assignees: Zuma Array Limited - Applicants: Zuma Array Limited - Inventors: Susan Cook; Steve Kelly; Morten Warren; Sam James; Seongmin Hwang - Web page: https://patentgrep.com/patent/US10924832B2 ## CPC - H04R 1/028: {associated with devices performing functions other than acoustics, e.g. electric candles} - F21V 33/0056: {Audio equipment, e.g. music instruments, radios or speakers} - H04R 9/022: {Cooling arrangements} - F21S 8/02: of recess-mounted type, e.g. downlighters (specially adapted for vehicle exteriors F21S41/00-F21S45/00) - F21V 29/71: using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements - F21V 29/773: {the planes containing the fins or blades having the direction of the light emitting axis} - F21Y 2115/10: Light-emitting diodes [LED] - H04R 1/023: {Screens for loudspeakers} - H04R 1/24: Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges - H04R 7/20: Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands - H04R 2307/207: Shape aspects of the outer suspension of loudspeaker diaphragms - H04R 2420/07: Applications of wireless loudspeakers or wireless microphones - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) - 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 - 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 A combined light and loudspeaker driver device comprising a housing supporting a loudspeaker driver, a heat removal element, electronic components and a light source. The heat removal element includes a column extending along a central longitudinal axis to a base of the housing, to meet a heat sink formed around the central longitudinal axis to the rear of the housing. The light source provides task lighting and is a heat source. It is mounted on a front end of the column distal from the heat sink at the base of the housing, to optimize conduction of heat away from the light source. The housing is generally cup shaped and has side walls. The interior of the side walls is parallel with the central longitudinal axis of the housing over the majority of the rearward depth thereof resulting in a large void behind the loudspeaker diaphragm, leading to improved sound. ## Claims ### Claim 1 A combined light and loudspeaker driver device comprising: a loudspeaker driver having a loudspeaker diaphragm with an opening formed around a central longitudinal axis of the device, the central longitudinal axis defining a forward and a rearward direction of the device; and a housing for supporting the loudspeaker driver; and a light source positioned radially inwardly of the opening of the loudspeaker diaphragm, with respect to the central longitudinal axis and configured to direct light forward and away from the device, wherein the loudspeaker diaphragm is connected to the housing by a flexible roll surround, the flexible roll surround being shaped as an annulus with a convex rearward surface and a concave frontward surface, wherein a forward protrusion of the flexible roll-surround is less than a roll-surround having a convex frontward surface. ### Claim 2 (depends on 1) The device of claim 1: wherein the light source is configured to direct light away from the loudspeaker diaphragm of the device; and/or wherein the light source is positioned forward of the opening of the loudspeaker diaphragm; and/or wherein the loudspeaker diaphragm is formed as an inverted cone or circular paraboloid. ### Claim 3 (depends on 1) The device of claim 1, further comprising a heat removal element comprising a heat sink having at least an axially central part formed rearwardly of the housing along the central longitudinal axis of the device, and a heat removal column extending from the axially central part of the heat sink in the forward direction along the central longitudinal axis of the device, the light source being mounted at the forward end of the heat removal column. ### Claim 4 (depends on 3) The device of claim 3: wherein a void is defined between the rear of the loudspeaker diaphragm, a rear portion of the housing immediately adjacent to the axially central part of the heat sink and interior sidewalls of the housing that extend forward from the rear portion of the housing to a front portion of the housing, proximal to the loudspeaker diaphragm, wherein the sidewalls do not converge with the heat removal column in the rearward direction over a majority of the length of the device; and/or wherein the interior of the housing provides an air gap that extends rearwardly parallel to the longitudinal axis from the diaphragm to the rear part of the housing, proximal to the axially central part of the heat sink; and/or wherein the heat sink forms a rearmost part of the housing; and/or wherein the heat sink comprises a plurality of fins, wherein each fin extends in the radial direction from the longitudinal axis. ### Claim 5 (depends on 1) The device of claim 1, wherein the light source comprises one LED or a plurality of LEDs. ### Claim 6 (depends on 5) The device of claim 5, wherein the LED or each LED is a blue or UV LED mounted so as to face toward a cover member that is coated with, impregnated with, or formed from, a phosphor material. ### Claim 7 (depends on 6) The device of claim 6: wherein the cover member forms an enclosure for the blue or UV LED(s); and/or wherein the external surface of the cover member comprises a translucent, white coating. ### Claim 8 (depends on 1) The device of claim 1, further comprising a lens or lens array mounted in front of the light source. ### Claim 9 (depends on 8) The device of claim 8: wherein the lens or lens array is removably mounted in front of the light source; and/or wherein the lens or lens array is magnetically or mechanically mounted in front of the light source. ### Claim 10 (depends on 1) The device of claim 1, further comprising a dome tweeter having a tweeter membrane in the form of a dome, wherein the light source is positioned behind the tweeter membrane, and wherein the tweeter membrane is configured to receive light generated by the light source and to transmit or radiate the received light away from the device, particularly away from the loudspeaker diaphragm of the device. ### Claim 11 (depends on 10) The device of claim 10, wherein the tweeter membrane is formed of, coated with, or impregnated with a fluorescent or phosphorescent material adapted to receive light generated by the light source, absorb the received light and emit light away from the device. ### Claim 12 (depends on 1) The device of claim 1, further comprising: a ring radiator tweeter positioned radially inwardly of the opening in the loudspeaker diaphragm and radially outwardly of the light source, with respect to the longitudinal axis. ### Claim 13 (depends on 1) The device of claim 1, further comprising a speaker grille mounted forward of a front surface of the loudspeaker diaphragm. ### Claim 14 (depends on 13) The device of claim 13: wherein the speaker grille is either light diffusive and/or transparent/translucent; and/or wherein the speaker grille comprises an aperture to allow egress of light from the light source away from the device; and/or wherein the speaker grille comprises an aperture to allow egress of light from the light source away from the device, and wherein the speaker grille has a plurality of reflective surfaces concentric with the aperture, each arranged to reflect light from the light source away from the device; and/or wherein the speaker grille comprises an aperture to allow egress of light from the light source away from the device, and wherein the device further comprises a secondary lens positioned in the aperture of the grille. ### Claim 15 (depends on 1) The device of claim 1, further comprising a microphone, and a wireless transceiver configured to receive and transmit audio and electrical signals to control the light and sound.