Patents Assigned to Phoenix Electric Co., Ltd.
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Patent number: 11913985Abstract: It is intended to provide an irradiation device that can achieve good starting performance even without encapsulating a starting performance promoting substance into the internal space of a luminous tube in a discharge lamp, and simultaneously, can distinguish whether the discharge lamp is a genuine product or not. An irradiation device (50) is composed of a discharge lamp (110) provided as a light source and an ultraviolet light source (200) irradiating ultraviolet light to the discharge lamp (110) to detect whether the discharge lamp (110) is a genuine product or not in activation of the discharge lamp (110).Type: GrantFiled: March 1, 2019Date of Patent: February 27, 2024Assignee: PHOENIX ELECTRIC CO., LTDInventor: Tomihiko Ikeda
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Patent number: 11781810Abstract: The drying device is composed of an LED lamp unit and a thermally dispersing member. The LED lamp unit emits rays of light onto a work that a dried object is applied to the surface thereof. The thermally dispersing member is disposed on a stage and supports the work from the opposite side of the LED lamp unit. The thermally dispersing member generates heat by absorbing the rays of light transmitting through the work.Type: GrantFiled: February 4, 2021Date of Patent: October 10, 2023Assignee: PHOENIX ELECTRIC CO., LTD.Inventor: Tomohiko Inoue
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Patent number: 11641009Abstract: A light-emitting device including a solid-state light source that emits light having a peak wavelength in the range of 480 nm or less and a fluorescent film that covers the solid-state light source and includes at least one kind of phosphor, wherein the fluorescent film includes at least one kind of near-infrared phosphor that is excited by light from the solid-state light source, has a peak wavelength in the range exceeding 700 nm, and has an emission spectrum with a full width at half maximum of 100 nm or more in a range including the peak wavelength.Type: GrantFiled: June 12, 2019Date of Patent: May 2, 2023Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, PHOENIX ELECTRIC CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Takashi Fukuda, Tetsuya Gouda, Yuta Sakimoto, Naoto Hirosaki, Kohsei Takahashi
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Patent number: 11603982Abstract: A broadband light-emitting device is composed of a substrate, a solid light source that is installed on a front face of the substrate and emits light at an upper face thereof, a near-infrared fluorescent material disposed in direct contact with the front face of the substrate in the vicinity of the solid light source, and a visible light fluorescent material disposed on a region ranging from the upper face of the solid light source to an upper face of the near-infrared fluorescent material. Besides, the near-infrared fluorescent material contains fluorescent particles exhibiting fluorescence in a near-infrared wavelength band with a peak wavelength of 700 nm and a wavelength width at half maximum of 100 nm or greater.Type: GrantFiled: July 8, 2022Date of Patent: March 14, 2023Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Tetsuya Gouda, Yuta Sakimoto
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Publication number: 20210249569Abstract: A light-emitting device including a solid-state light source that emits light having a peak wavelength in the range of 480 nm or less and a fluorescent film that covers the solid-state light source and includes at least one kind of phosphor, wherein the fluorescent film includes at least one kind of near-infrared phosphor that is excited by light from the solid-state light source, has a peak wavelength in the range exceeding 700 nm, and has an emission spectrum with a full width at half maximum of 100 nm or more in a range including the peak wavelength.Type: ApplicationFiled: June 12, 2019Publication date: August 12, 2021Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, PHOENIX ELECTRIC CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Takashi FUKUDA, Tetsuya GOUDA, Yuta SAKIMOTO, Naoto HIROSAKI, Kohsei TAKAHASHI
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Patent number: 10983259Abstract: An infrared lamp 100 is composed of an LED 110 that emits infrared light and a cut filter 120 that transmits a part of the light from the LED 110. And a peak wavelength of the light emitted from the LED 110 in the lighting starting stage is set to be shorter than a cut-on wavelength of the cut filter 120.Type: GrantFiled: May 6, 2019Date of Patent: April 20, 2021Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Tetsuya Gouda, Kenichi Yamashita
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Patent number: 10438789Abstract: A light source is composed of a discharge lamp, a resistor and a reflector container. The discharge lamp is provided as a source of light. The resistor increases a resistance in elevation of a temperature thereof, and reduces the resistance in lowering of the temperature thereof. The reflector container is a constituent element to which the discharge lamp and the resistor are attached. Additionally, the resistor is caused to heat an outer surface of the reflector container in accordance with elevation of a temperature of the discharge lamp in activation of lighting of the discharge lamp.Type: GrantFiled: August 23, 2018Date of Patent: October 8, 2019Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Tomihiko Ikeda, Kouichi Odani
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Patent number: 10337694Abstract: An LED lamp includes a plurality of LEDs and a pillar that is defined by a polygonal cross-sectional shape and includes a plurality of lateral surfaces on which the plurality of LEDs are disposed. A pillar radius ratio is set to fall in a range of greater than or equal to 3.73% and less than or equal to 18.25%. The pillar radius ratio is defined as a dimensional ratio of a pillar radius to a radius of an opening of a reflector made in shape of a bowl. The pillar radius is defined as a distance from a center point of the pillar to each of the plurality of lateral surfaces.Type: GrantFiled: October 15, 2018Date of Patent: July 2, 2019Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Tetsuya Gouda, Tomohiko Inoue
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Patent number: 10295152Abstract: A light emitting diode lamp is composed of a light emitting diode, a band-pass filter and a light angle adjuster. The filter has a light cutoff function to cut off a light ray with a specific wavelength. The light angle adjuster allows the light rays emitted from the diode to be incident on the filter at incident angles of less than or equal to a maximum incident angle up to which the filter is capable of exerting the light cutoff function. The light angle adjuster is a reflector. The diode is mounted to a bottom portion. The filter is mounted to an opening. On an imaginary cross section including the optical axis, an angle formed between the optical axis and a straight line is less than or equal to the maximum incident angle, the straight line connects the emission center and an edge of the opening.Type: GrantFiled: June 27, 2018Date of Patent: May 21, 2019Assignee: Phoenix Electric Co., Ltd.Inventors: Tetsuya Gouda, Kenichi Yamashita
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Patent number: 10056220Abstract: A method of manufacturing a high-pressure discharge lamp, comprising the steps of: inserting a mount into an interior of a glass tube having an outer diameter smaller than an inner diameter of an end part of a sealed container; radially constricting the glass tube at a first position located away from a metallic foil toward a tip of an electrode; sealing the mount by a region of the glass tube that ranges from the first position to at least the other end of the metallic foil; protruding the electrode out of the glass tube located away from the first position toward the tip of the electrode to form a glass-tube air-tightly sealed mount; inserting the sealed mount into the end part of the sealed container; and radially constricting the end part of the sealed container to sealing the glass tube of the sealed mount by the end part.Type: GrantFiled: September 26, 2017Date of Patent: August 21, 2018Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Atsuji Nakagawa, Hiroshi Takahashi, Takashige Yamada
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Publication number: 20180049285Abstract: A light emitting device includes: a first white light source which includes N pieces of first white light emitting diodes and emits a first white light; and a second white light source which includes M pieces of second white light emitting diodes and a first resistance element electrically connected in series to the second white light emitting diodes and having a first resistance value, is electrically connected in parallel to the first white light source, and emits a second white light, the light emitting device emitting a mixed white light of the first white light and the second white light. The drive voltage of the first white light source is higher than a drive voltage of the second white light source, and a color temperature of the mixed white light is higher as a total luminous flux of the mixed white light is higher.Type: ApplicationFiled: October 24, 2017Publication date: February 15, 2018Applicants: Toshiba Materials Co., Ltd., Phoenix Electric Co., Ltd.Inventors: Hiroyasu Kondo, Masahiko Yamakawa, Yasuhiro Shirakawa, Ryoji Tsuda, Atsuji Nakagawa, Toshitaka Fujii, Tomohiko Inoue
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Patent number: 9841165Abstract: A light emitting diode lamp is composed of a reflective mirror, a pillar and a plurality of light emitters disposed in radial arrangement about a focal point of the reflective mirror on the surface of the pillar. Each of the plurality of light emitters is composed of a light emitting diode and a lens forming a virtual image in a position of the focal point located behind the light emitting diode. Additionally, a plurality of light emitting diode elements composing the light emitting diode in each of the plurality of light emitters emit light rays with the same wavelength, and the light emitting diodes in the plurality of light emitters emit the light rays with at least two types of wavelength.Type: GrantFiled: August 2, 2017Date of Patent: December 12, 2017Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Tomohiko Inoue, Tetsuya Gouda, Kenichi Yamashita, Kana Watanabe
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Patent number: 9812280Abstract: A method of manufacturing a high-pressure discharge lamp, comprising the steps of: inserting a mount into an interior of a glass tube having an outer diameter smaller than an inner diameter of an end part of a sealed container; radially constricting the glass tube at a first position located away from a metallic foil toward a tip of an electrode; sealing the mount by a region of the glass tube that ranges from the first position to at least the other end of the metallic foil; protruding the electrode out of the glass tube located away from the first position toward the tip of the electrode to form a glass-tube air-tightly sealed mount; inserting the sealed mount into the end part of the sealed container; and radially constricting the end part of the sealed container to sealing the glass tube of the sealed mount by the end part.Type: GrantFiled: June 23, 2015Date of Patent: November 7, 2017Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Atsuji Nakagawa, Hiroshi Takahashi, Takashige Yamada
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Patent number: 9591732Abstract: A method for lighting a high-pressure discharge lamp that is configured to change a power to be supplied to the high-pressure discharge lamp in accordance with a luminance parameter of an image content is disclosed. In the method, halogen is encapsulated in an internal space of an arc tube part of the high-pressure discharge lamp with an excessive volume with respect to a capacity of the internal space such that a halogen cycle is established when part of mercury deposits without vaporizing, and the internal space is configured to be kept at a higher temperature than a blackening temperature that is lower than a deposition temperature of the mercury and causes remarkable blackening on an inner wall of the arc tube part.Type: GrantFiled: March 24, 2016Date of Patent: March 7, 2017Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Tetsuya Gouda, Shinichi Ushijima
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Publication number: 20170048941Abstract: A light emitting device includes: a first white light source which includes N pieces of first white light emitting diodes and emits a first white light; and a second white light source which includes M pieces of second white light emitting diodes and a first resistance element electrically connected in series to the second white light emitting diodes and having a first resistance value, is electrically connected in parallel to the first white light source, and emits a second white light, the light emitting device emitting a mixed white light of the first white light and the second white light. The drive voltage of the first white light source is higher than a drive voltage of the second white light source, and a color temperature of the mixed white light is higher as a total luminous flux of the mixed white light is higher.Type: ApplicationFiled: September 8, 2016Publication date: February 16, 2017Applicants: Toshiba Materials Co., Ltd., Phoenix Electric Co., Ltd.Inventors: Hiroyasu KONDO, Masahiko YAMAKAWA, Yasuhiro SHIRAKAWA, Ryoji TSUDA, Atsuji NAKAGAWA, Toshitaka FUJII, Tomohiko INOUE
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Patent number: 9362103Abstract: The present high-pressure discharge lamp is composed of an arc tube part having an internal space, a pair of tungsten electrodes disposed in opposition to each other within the internal space, and mercury and halogen encapsulated in the internal space. The halogen is excessively encapsulated into the internal space relatively to the capacity of the internal space so as to establish an appropriate halogen cycle when the mercury partially deposits without evaporating.Type: GrantFiled: September 17, 2014Date of Patent: June 7, 2016Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Atsuji Nakagawa, Hiroshi Takahashi, Tomihiko Ikeda, Shinichi Ushijima, Tetsuya Gouda
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Patent number: 9148926Abstract: An LED lamp comprises: a first LED part, a second LED part that is connected to the first LED part in parallel and is configured to emit a light with a color temperature lower than that of a light to be emitted from the first LED part, and an impedance circuit that is connected to the first LED part in parallel while being connected to the second LED part in series.Type: GrantFiled: March 26, 2014Date of Patent: September 29, 2015Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Atsuji Nakagawa, Toshitaka Fujii
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Patent number: 9129793Abstract: A high pressure discharge lamp with auxiliary lamp comprises: a high pressure discharge lamp having an arc tube and at least one sealing portion, a pair of main electrodes, and a pair of feeders supplying power to the main electrodes; an auxiliary lamp having an airtight case, an inner electrode, and an outer electrode, wherein the inner electrode is arranged at a position so as to part the inner space to large and small spaces, the outer electrode is arranged at a position so as to face the large space, the auxiliary lamp as arranged as the large space faces the sealing portion.Type: GrantFiled: February 15, 2012Date of Patent: September 8, 2015Assignee: PHOENIX ELECTRIC CO., LTD.Inventors: Tomihiko Ikeda, Hiroshi Takahashi, Shinichi Ushijima, Tetsuya Gouda, Kei Shimada
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Patent number: D873444Type: GrantFiled: May 8, 2018Date of Patent: January 21, 2020Assignee: PHOENIX ELECTRIC CO., LTD.Inventor: Tomihiko Ikeda
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Patent number: D927046Type: GrantFiled: January 17, 2019Date of Patent: August 3, 2021Assignee: PHOENIX ELECTRIC CO., LTD.Inventor: Tomihiko Ikeda