# US 8,770,798 B2 · Luminaire > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,798 B2 - Document ID: US8770798B2 - Status: Granted - Kind: B2 - Application number: 13/754,531 - Filed: 2013-01-30 - Published: 2014-04-24 - Granted: 2014-07-08 - Earliest claimed: 2012-10-19 - Assignees: Toshiba Lighting & Technology Corporation - Applicants: Toshiba Lighting & Technology Corporation - Inventors: Ryotaro Matsuda; Yumi Hanyuda; Takayoshi Moriyama; Yoshiro Oka - Web page: https://patentgrep.com/patent/US8770798B2 ## CPC - F21V 29/76: with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section - F21V 7/0025: {Combination of two or more reflectors for a single light source (array of reflectors for a cluster of light sources F21V7/0083)} - F21V 7/10: Construction - F21V 14/04: by movement of reflectors {(in vehicle head lamps F21S41/675)} - F21V 17/00: Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages (of light sources or light holders F21V19/00) - F21V 17/002: {with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function (F21V17/10 takes precedence)} - F21V 21/30: Pivoted housings or frames - F21V 3/0615: {the material diffusing light, e.g. translucent glass} - F21V 7/0083: {Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane (combination of two or more reflectors F21V7/0025)} - F21V 7/06: with parabolic curvature - F21V 17/12: by screwing - F21V 23/02: the elements being transformers, impedances {or power supply units, e.g. a transformer with a rectifier} - F21V 29/507: of means for protecting lighting devices from damage, e.g. housings - F21V 29/763: {the planes containing the fins or blades having the direction of the light emitting axis} - F21W 2131/406: for theatres, stages or film studios - F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements - F21Y 2115/10: Light-emitting diodes [LED] - Y10T 29/49002: Electrical device making - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract According to one embodiment, a floodlight includes at least one light-emitting part, a thermal radiator, a reflector, and an adapter part attachable to and detachable from the thermal radiator. The light-emitting part includes an LED element. The thermal radiator is thermally connected to the light-emitting part. The reflector is provided on the thermal radiator, and controls luminous intensity distribution from the light-emitting part. The adapter part includes an extension reflector. The extension reflector is continuous with the reflector in a state where the adapter part is attached to the thermal radiator and, together with the reflector, controls the luminous intensity distribution from the light-emitting part to provide a luminous intensity distribution angle narrower than the reflector. ## Claims ### Claim 1 A luminaire comprising: at least one light-emitting part; a thermal radiator thermally coupled to the light-emitting part; a reflector that is attached to the thermal radiator and shapes luminous intensity distribution of light emitted from the light-emitting part; and an adapter part attached to the thermal radiator and including an extension reflector that is continuous with the reflector and, together with the reflector, shapes the luminous intensity distribution of the light emitted from the light-emitting part to provide a luminous intensity distribution angle narrower than a luminous intensity distribution angle of the reflector without the extension reflector. ### Claim 2 (depends on 1) The luminaire according to claim 1, further comprising: a translucent cover that covers an open end of the reflector through which the light emitted from the light-emitting part is distributed, wherein the thermal radiator includes an attachment part to which the cover part and the adapter part are attached. ### Claim 3 (depends on 1) The luminaire according to claim 1, wherein the thermal radiator includes a plurality of thermal radiation fins separated from each other to allow air to pass between the fins. ### Claim 4 (depends on 3) The luminaire according to claim 3, wherein the thermal radiator includes a frame having a first surface to which the light-emitting part is attached and is thermally coupled, and the thermal radiation fins are disposed on a second surface of the frame that is opposite to the first surface. ### Claim 5 (depends on 1) The luminaire according to claim 1, wherein the thermal radiator includes a fixing part to which the reflector is attached. ### Claim 6 (depends on 5) The luminaire according to claim 5, wherein the reflector includes a flange part that is fixed to the fixing part, and the extension reflector includes an extension flange part that is overlapped with the flange part fixed to the fixing part. ### Claim 7 (depends on 1) The luminaire according to claim 1, wherein the adapter part includes a frame surrounding a periphery of the extension reflector. ### Claim 8 (depends on 1) The luminaire according to claim 1, wherein the at least one light-emitting part includes an LED element. ### Claim 9 (depends on 1) The luminaire according to claim 1, further comprising an attachment arm that rotatably supports the thermal radiator. ### Claim 10 A method of assembling a luminaire having at least one light-emitting unit, comprising: attaching a thermal radiator to the light-emitting unit to thermally couple the thermal radiator to the light-emitting unit; attaching a reflector to the thermal radiator, the reflector being configured to shape luminous intensity distribution of light emitted from the light-emitting unit; and attaching an extension reflector to the thermal radiator so that the reflector and the extension reflector shape the luminous intensity distribution of the light emitted from the light-emitting unit to provide a luminous intensity distribution angle that is narrower than that of the reflector without the extension reflector. ### Claim 11 (depends on 10) The method of claim 10, further comprising: covering an open end of the reflector through which the light emitted from the light-emitting unit is distributed with a translucent cover. ### Claim 12 (depends on 10) The method of claim 10, wherein the thermal radiator includes a plurality of thermal radiation fins separated from each other to allow air to pass between the fins. ### Claim 13 (depends on 12) The method of claim 12, wherein the thermal radiator includes a frame having a first surface to which the light-emitting part is attached and is thermally coupled, and the thermal radiation fins are disposed on a second surface of the frame that is opposite to the first surface. ### Claim 14 (depends on 10) The method of claim 10, wherein the thermal radiator includes a fixing part to which the reflector is attached. ### Claim 15 (depends on 14) The method of claim 14, wherein the reflector includes a flange part that is fixed to the fixing part, and the extension reflector includes an extension flange part that is overlapped with the flange part fixed to the fixing part. ### Claim 16 (depends on 10) The method of claim 10, further comprising: attaching an attachment arm to the thermal radiator to rotatably support the thermal radiator.