With Cooling Or Ventilating Feature Patents (Class 362/547)
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Publication number: 20100067251Abstract: A vehicle lighting device includes: a heat sink member; a semiconductor-type light source directly placed on a top face of the heat sink member; a power-feeding holder which is set on the semiconductor-type light source and the heat sink member, for holding the semiconductor-type light source at the side of the heat sink member and feeding a power current to the semiconductor-type light source; and a fixing member which is covered on the power-feeding holder and fixed to the heat sink member, for fixing the power-feeding holder to the heat sink member and sandwiching and fixing the semiconductor-type light source between the power-feeding holder and the heat sink member. As a result, this vehicle light device improves workability of assembling components.Type: ApplicationFiled: September 10, 2009Publication date: March 18, 2010Inventor: Hiroto TOKUNAGA
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Patent number: 7674027Abstract: A light source has a unit structure including a main body, a light-radiating unit that is provided in the main body to radiate light, and a heat sink member that is provided in the main body. A lamp housing has a heat discharge opening at a position corresponding to the light source.Type: GrantFiled: August 14, 2007Date of Patent: March 9, 2010Assignee: Ichikoh Industries, Ltd.Inventors: Tsuneo Yoshihara, Tomoyuki Saiga
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Patent number: 7674011Abstract: An LED lamp includes a heat dissipation device and a plurality of LED modules. The heat dissipation device includes a heat conductive member and a fin unit. The LED modules are attached to a top surface of a first plate of the heat conductive member. The heat conductive member comprises a plurality of posts embedded in the top surface of the first plate. Peripheries of the first and second plates are in a hermetical conjunction with each other to form a chamber containing phase-changeable working fluid therein. The first plate has a plurality of receiving recessions which are depressed downwardly from the top surface thereof and respectively receive the posts. Screws are used to extend through the LED modules to threadedly engage in the posts thereby to intimately mount the LED modules on the top surface of the first plate of the heat conductive member.Type: GrantFiled: June 5, 2008Date of Patent: March 9, 2010Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Zhi-Yong Zhou, Qiao-Li Ding
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Publication number: 20100046245Abstract: An automotive headlamp assembly having a closed-loop cooling circuit. The headlamp assembly includes a housing cooperating with a transparent lens cover to define a chamber. At least one light source is located within the chamber. The cooling circuit has at least one cold plate thermally coupled to the light source. A radiator is fluidly coupled to the cold plate by a plurality of tubes. The tubes are oriented at least partially upwardly and configured to circulate a fluid through the cooling circuit as a result of heating and cooling of the fluid therein.Type: ApplicationFiled: August 20, 2008Publication date: February 25, 2010Inventors: Ajmal Imran Ansari, Edwin Mitchell Sayers, III
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Patent number: 7665873Abstract: A headlamp for vehicles has at least one illumination device with one or more light-emitting diodes and with an optical system that is disposed in the light exit area and focuses the light of the light-emitting diodes for a forward lighting of the vehicle. At least one cooling body is provided for dissipating the heat output by the light-emitting diode, and the cooling body contains a number of cooling ribs. To configure the light cone, the cooling body is disposed in the optical axis of the light exit area of the light-emitting diodes between the light-emitting diodes and the optical system, at least the tip of a cooling rib of the cooling body is located at the focal point between the light-emitting diode and the optical system.Type: GrantFiled: December 19, 2008Date of Patent: February 23, 2010Assignee: Dr. Ing. h.c. F Porsche AGInventors: Stefan Eberhardt, Heinz Redlich, Burkhard Leutiger
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Publication number: 20100039831Abstract: A heat dissipation system includes a thermal transfer member fixedly secured to a heat generating electronic device and defining with the heat generating electronic device a convection chamber and having a first air hole for guiding hot air out of the convection chamber and a second air hole for guiding outside cold air into the convection chamber, and a heat dissipation device bonded to the bottom wall of the thermal transfer member for quick dissipation of waste heat.Type: ApplicationFiled: August 14, 2008Publication date: February 18, 2010Inventors: Yung-Sheng Liu, Sheng-Yu Wu
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Patent number: 7654703Abstract: A luminaire comprising a housing having thermally separate compartments for an electronics portion and a lighting portion. These thermally separate compartments can provide thermal isolation between the electronics portion and the lighting portion. The lighting portion comprises a plurality of light-emitting elements and further includes an optical device comprising two linear diffuser elements and can be used to further improve the light emission characteristics of the light-emitting elements thereby providing a directly viewable luminaire wherein the illumination produced by point light sources appears uniform along the length of the luminaire. A power supply for supply of energy to the light-emitting elements and a controller for controlling application of energy from a power source to the light-emitting elements is provided in the electronics portion and can be thermally separated within the electronics portion.Type: GrantFiled: April 2, 2007Date of Patent: February 2, 2010Assignee: Koninklijke Philips Electronics, N.V.Inventors: Peter Kan, Adrian Weston
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Publication number: 20100020563Abstract: An automotive lamp is provided with: a lamp chamber formed so as to include a lamp body having a front end opening portion and a translucent cover provided on the lamp body so as to cover the front end opening portion; a lamp unit that is housed inside the lamp chamber and includes a semiconductor light emitting device as a light source; a bracket that includes a light source mounting portion having a mounting surface for the semiconductor light emitting device and a plurality of radiating fins, thermally in contact with the light source mounting portion and arranged such that ventilation passages extend from the lamp body side toward the translucent cover, are formed, and that supports the lamp unit; and a fan that blows air such that air flows through the ventilation passages from the lamp body side toward the translucent cover.Type: ApplicationFiled: July 23, 2009Publication date: January 28, 2010Inventors: Masayasu Ito, Tsukasa Tokida
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Patent number: 7651253Abstract: A heat exchange structure includes elongated air ducts. Each air duct has a first opening and a second opening at two ends of the air duct to allow air to enter and exit the air duct, respectively. The heat exchange structure includes an exterior heat exchange surface and interior heat exchange surfaces, in which the exterior heat exchange surface is configured to receive thermal energy from heat generators that are mounted on the exterior heat exchange surface, and the exterior heat exchange surface dissipates a portion of the thermal energy received from the heat generators and transfers another portion of the thermal energy to the interior heat exchange surfaces. The interior heat exchange surfaces are in the elongated air ducts and configured to exchange thermal energy with air flowing in the air ducts, enhancing air flow in the air ducts by buoyancy of heated air.Type: GrantFiled: March 28, 2008Date of Patent: January 26, 2010Assignee: Hong Kong Applied Science & Technology Research Institute Co., LtdInventor: Geoffrey Wen-Tai Shuy
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Publication number: 20100008100Abstract: A projector type vehicle light is provided that can reduce temperature increase of a solenoid due to heat generated by a light source, while a shade and a projection lens can be disposed closer to each other. The vehicle light can be formed as a headlight and can include a light source, a reflector, a shade, and a projection lens. The projector type vehicle light can further include a shade rotational shaft extending in a left-to-right direction, a base member configured to support the shade so that the shade can rotate around the shade rotational shaft, a solenoid for making the shade rotate between a low-beam position and a high-beam position, and a crank shaft configured to connect the solenoid with the shade for driving. The solenoid can be disposed just below the shade so that a moving direction of the plunger of the solenoid is aligned with the left-to-right direction of the projector type vehicle headlight.Type: ApplicationFiled: May 14, 2009Publication date: January 14, 2010Inventors: Yoichi Tatsumi, Yoshiaki Akiyama
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Patent number: 7637633Abstract: Heat dissipation devices for an LED lamp set has a plate-type heat spreader as the core unit. The plate-type heat spreader is either a flat-plate heat pipe or a metal plate embedded with heat pipes. The high-power LED lamps are thermally connected to the bottom surface of the heat spreader so that the heat generated by the LED lamps is absorbed by the evaporation region of the flat-plate heat pipe or the embedding heat pipes. The heat is spread by internal vapor motion of the working fluid toward different regions of the heat spreader. The top surface of the heat spreader is connected with a finned heat sink, where the heat is delivered to the ambient air. The hot air leaves by buoyancy through the openings on a lamp housing located above the finned heat sink. The inner surface of the lamp housing can be connected with the top surface of the plate-type heat spreader, with the heat dissipated out at the surface of the housing by natural convection.Type: GrantFiled: October 12, 2006Date of Patent: December 29, 2009Assignee: National Tsing Hua UniversityInventor: Shwin-Chung Wong
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Publication number: 20090316425Abstract: An automotive lamp includes an LED as a light source, a heatsink for radiating heat produced by the LED, the heatsink including a plurality of plate fins installed upright on base parts and a plurality of ventilation passages formed between the plate fins, a centrifugal fan for performing the forced air cooling of the plate fins by sending air through the ventilation passages of the heatsink, the centrifugal fan having air inlets in an axial direction for drawing air in, a left-side air outlet and a right-side air outlet for discharging air in left-right directions perpendicular to the axial direction, and a lamp housing for housing the LED, heatsink and centrifugal fan. The plate fins of the heatsink are formed such that the entrance of at least one of a plurality of ventilation passages faces the left-side air outlet and the right-side outlet of the centrifugal fan.Type: ApplicationFiled: June 23, 2009Publication date: December 24, 2009Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Takashi Inoue, Yuji Yasuda
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Publication number: 20090303742Abstract: There is provided a vehicle lamp. The vehicle lamp includes a lamp body including a hole portion therein; an outer lens, attached to the lamp body to form a lamp chamber; a lamp unit provided in the lamp chamber and including a light emitting element serving as a light source; a heat sink; and a fan. The heat sink includes a base portion fitted into the hole portion of the lamp body; outer fins disposed on a surface of the base portion and extending outside of the lamp body; and inner fins disposed on another surface of the base portion and extending into the lamp chamber. The fan moves air in the lamp chamber toward the inner fins, which are configured such that the air passing between the respective inner fins is guided toward the outer lens.Type: ApplicationFiled: June 4, 2009Publication date: December 10, 2009Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Yuji YASUDA
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Patent number: 7628522Abstract: A light emitting diode (LED) lamp (100) includes a heat sink (200), an LED module (400) attached to a bottom side of the heat sink (200), and an air exhausting duct (300). The air exhausting duct includes a cover (320) and a hollow tube (340) extending upwardly from the cover. The cover is mounted on a top side of the heat sink with an air collecting chamber (326) defined between the heat sink and the cover. The air collecting chamber communicates with an air passage (342) defined in the tube.Type: GrantFiled: December 29, 2007Date of Patent: December 8, 2009Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Fang-Xiang Yu, Shun-Yuan Jan, Chung-Yuan Huang
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Patent number: 7625110Abstract: A vehicle lamp assembly includes a light source unit (e.g., one or more LEDs) mounted to an associated vehicle for providing illumination and a heat sink thermally coupled to the light source unit for dissipating generated heat therefrom. The heat sink has a main body portion, spaced apart fins extending from the main body portion, and an angled surface section on the main body portion disposed between adjacent ones of the spaced apart fins for urging environmental elements to run off the heat sink.Type: GrantFiled: January 31, 2008Date of Patent: December 1, 2009Assignee: Honda Motor Co., Ltd.Inventors: Thomas G. Kracker, Steven M. Kovach, Tony D. Wang
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Patent number: 7626806Abstract: An electronic apparatus having an upper housing, a lower housing to which the upper housing is connected so as to be openable and closable, where the lower housing is formed with a signal line path running near a connecting portion with the upper housing and the signal line path has a signal line disposed therein. A receiving member having a base portion accommodated in the lower housing, a receiving portion provided upright on the base portion and protruding above an upper surface of the lower housing to receive the upper housing from below, and a first fin portion protruding frontward from the base portion to extend over the signal line path.Type: GrantFiled: June 20, 2008Date of Patent: December 1, 2009Assignee: Fujitsu LimitedInventors: Sonomasa Kobayashi, Nobuyoshi Yamamoto
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Patent number: 7621664Abstract: The device comprises at least one power light emitting diode light source and other means able to constitute one or more heat sources of such a nature as to affect the thermal environment of the light emitting diode light source. In accordance with the invention, the device also comprises a support piece formed at least partially from a material based on anisotropic graphite supporting the light emitting diode light source and opposing an effect of the other means on the thermal environment of the light emitting diode light source. According to other characteristics, the support piece comprises at least one thermal dissipation heat sink and the device can comprise a fan able to force a circulation of air through the heat sink.Type: GrantFiled: September 27, 2006Date of Patent: November 24, 2009Assignee: Valeo VisonInventor: Jean-Marc Nicolai
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Patent number: 7618174Abstract: In a vehicle lamp including a light source unit at inside of a lamp chamber formed by a lamp body and a transparent front face cover attached to a front opening portion thereof, a light source unit includes a light emitting element supported by a unit mounting portion, an optical unit for irradiating light from the light emitting element to a front side of the vehicle lamp, and a swivel drive mechanism for driving the optical unit without being moved cooperatively with the light emitting element. The light source unit integral with the unit mounting portion and a heat radiating portion is arranged to penetrate the lamp body.Type: GrantFiled: April 2, 2008Date of Patent: November 17, 2009Assignee: Koito Manufacturing Co., Ltd.Inventors: Yuji Yasuda, Mitsuyuki Mochizuki, Masashi Tatsukawa, Hiroyuki Ishida, Seiichiro Yagi
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Patent number: 7611270Abstract: A lighthead mounting structure provides both precise alignment of a lighthead and an effective heat transfer path away from heat generating components of the lighthead. Cooperating aluminum brackets are configured to lock together and overlap to provide an effective heat transfer path.Type: GrantFiled: September 7, 2007Date of Patent: November 3, 2009Assignee: Whelen Engineering Company, Inc.Inventors: Jon H. Lyons, Richard H. Morrow
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Publication number: 20090268475Abstract: A vent for a lamp enclosure comprises a passageway between the interior and exterior of the enclosure, a non-planar vent element covers the passageway. The vent has improved air flow and offers splash protection against liquids.Type: ApplicationFiled: April 24, 2008Publication date: October 29, 2009Inventors: Earl Ball, David T. DeGuiseppi, Robert Lavertu
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Patent number: 7607781Abstract: A heat-dissipating device includes a receptacle body having a lateral wall formed with an air vent; a lamp unit including a burner, a reflector covered the burner, a glass plate disposed in front of the reflector, the reflector cooperating with the glass plate to define an air inlet adjacent to the air vent and an air outlet spaced from the air vent; a fan unit mounted on the receptacle body for covering the air vent and for generating airflow to flow into the receptacle body; and a nozzle disposed within the receptacle body between the air vent and the lamp unit for guiding the airflow into the lamp unit.Type: GrantFiled: May 8, 2006Date of Patent: October 27, 2009Assignee: Young Optics Inc.Inventors: Chi-Chui Yun, Hung-Ying Lin, Jia-Bin Huang
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Patent number: 7607801Abstract: A reflection-type light emitting apparatus has an excellent heat radiation property and allows the use of a high-power light emitting element, the minimization of a reduction in radiation efficiency of reflected light, and the focused radiation of high-output light at high efficiency. The apparatus has: a case 10 of metallic material and with an excellent heat radiation property; a reflection mirror section 11 formed fitted to the lower portion of case 10; a transparent plate 12 to cover the upper surface of case 10; heat radiation plates 13, 14 of metallic material with excellent heat conductivity and inserted inside the case 10; an LED element 2 mounted on the heat radiation plate 13; lead sections 15A, 15B fixed through an insulating layer 15a to the heat radiation plate 13 to serve as a power supply member to supply power to the LED element 2; and a spacer 16 of an insulating material to insulate the lead sections 15A, 15B from the case 10.Type: GrantFiled: October 28, 2004Date of Patent: October 27, 2009Assignee: Toyoda Gosei Co., Ltd.Inventors: Yoshinobu Suehiro, Satoshi Wada, Akihito Ota
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Publication number: 20090262550Abstract: A vehicle lamp is provided. The vehicle lamp includes semiconductor light emitting device, a heatsink configured to dissipate a heat generated by the semiconductor light emitting device, a fan which moves air, a guide portion configured to diffuse the air from the fan and to guide the air toward the heatsink, and a housing in which the semiconductor light emitting device, the heatsink, the fan and the guide portion are accommodated. The heatsink includes a base and a plurality of heat dissipating members arranged to protrude from the base.Type: ApplicationFiled: April 21, 2009Publication date: October 22, 2009Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Takashi Inoue
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Publication number: 20090262549Abstract: A vehicle lamp includes a semiconductor light emitting device, a thermally conductive portion which is in contact with the semiconductor light emitting device, a heatsink which dissipates heat generated by the semiconductor light emitting device, and a housing in which the semiconductor light emitting device, the thermally conductive portion and the heatsink are accommodated. The heatsink includes a base and plate fins arranged at intervals to protrude from the base. Each of the plate fins includes a plate surface facing the plate surface of an adjacent one of the plate fins and upwardly extending in a direction along the base. A plane parallel to at least one of the plate surfaces of the plate fins may be oblique with respect to a vertical direction. An inner surface of the housing may be oblique with respect to the vertical direction in a region above the plate fins.Type: ApplicationFiled: April 21, 2009Publication date: October 22, 2009Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Takashi INOUE, Masaru SASAKI
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Patent number: 7594740Abstract: A modular light emitting diode (LED) mounting configuration is provided including a light source module having a plurality of pre-packaged LEDs arranged in a serial array. The module includes a heat conductive body portion adapted to conduct heat generated by the LEDs to an adjacent heat sink. As a result, the LEDs are able to be operated with a higher current than normally allowed. Thus, brightness and performance of the LEDs is increased without decreasing the life expectancy of the LEDs. The LED modules can be used in a variety of illumination applications employing one or more modules.Type: GrantFiled: August 21, 2007Date of Patent: September 29, 2009Assignee: Pemlight Products, Inc.Inventors: John Popovich, Gregory W. Honegger
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Publication number: 20090231876Abstract: A vehicular headlamp is provided. The vehicular headlamp includes a headlamp which emits light; an indication lamp comprising semiconductor light-emitting elements as light sources; and an electric circuit which supplies a current to the indication lamp. The indication lamp is divided into at least two light source sections comprising respective sets of light sources, and at least one of the light source sections is disposed in a high-temperature region whose temperature is made higher than in a remainder of the light source sections while the headlamp unit is lit. The electric circuit controls the light source sections individually so that a current supplied to the light source section disposed in the high-temperature region is made smaller than a current supplied to the remainder of the light source sections.Type: ApplicationFiled: March 11, 2009Publication date: September 17, 2009Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Hiromi Nakamura, Hironori Tsukamoto
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Patent number: 7588350Abstract: A light emitting device module is provided. The light emitting device module includes a plurality of light emitting devices which are formed adjacent to each other, a plurality of radiating bases which support at least one of the plurality of the light emitting devices, and a heat transfer prevention unit which prevents heat from being conducted between the plurality of the radiating bases, wherein distances between the adjacent light emitting devices are less than mean values of the length along the adjacent direction of the adjacent light emitting devices.Type: GrantFiled: November 30, 2006Date of Patent: September 15, 2009Assignee: Samsung Electronics Co., Ltd.Inventor: Hiromitsu Takenaka
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Publication number: 20090213613Abstract: A motor vehicle headlight comprising an illuminating device (3) which comprises at least one light-emitting diode chip (20). The motor vehicle headlight furthermore has a heat pipe (5) or a thermosiphon (35) with an evaporation region (6) and a condensation region (7), wherein the evaporation region (6) is thermally connected to the illuminating device (3), and the condensation region (7) is connected to a heat sink (8) which outputs heat absorbed at the illuminating device (3) to the surrounding area.Type: ApplicationFiled: January 31, 2007Publication date: August 27, 2009Applicant: OSRAM Gesellschaft mit beschrankter HaftungInventors: Gerhard Mitic, Siegfried Ramminger
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Patent number: 7575354Abstract: An automotive lighting system employing semiconductor light sources includes LED light sources (52) which are mounted to an edge of a heat pipe (44) such that emitted light from the LED light sources travels toward a reflector (32) at the back of the housing (24) of the system, where it is reflected and/or focused forward through the lens (40) of the system. The heat pipe is thermally connected to a heat sink (35) which extends outside of the housing and which operates to remove heat from the LED light sources. The thickness of the heat pipe is significantly less than the size of the reflector, so that only a small amount of reflected light from the LED light sources is obscured.Type: GrantFiled: September 16, 2005Date of Patent: August 18, 2009Assignee: Magna International Inc.Inventor: Ronald Owen Woodward
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Patent number: 7572309Abstract: A filter for venting an enclosure (1) containing an electrical apparatus (4), such as a lens or lighting unit of a motor vehicle, and exposed to moisture or atmospheric agents, the filter including a tubular body (20) with a through cavity or conduit (11) opening at opposite ends (9, 10) of the body (20), which is coupled to a venting aperture (6) of the enclosure (1), the filter (8) including a hydrophobic filtering element; the body (20) of this filter (8) includes at least two portions (20A, 20B) set at an angle to each other, the membrane filtering element (15) being in the interior of the body (20) and being associated with it in such as manner as to form one piece therewith, and being coupled to the body (20) in a manner transverse to an axis of at least one of the portions.Type: GrantFiled: May 5, 2006Date of Patent: August 11, 2009Assignee: GVS S.p.A.Inventor: Marco Scagliarini
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Publication number: 20090196064Abstract: A vehicle lamp assembly for a vehicle includes a light source unit (e.g., one or more LEDs) mounted to the vehicle for providing illumination and a heat sink thermally coupled to the light source unit for dissipating generated heat therefrom. An air guide is secured to the vehicle for guiding air to the heat sink to remove heat therefrom.Type: ApplicationFiled: January 31, 2008Publication date: August 6, 2009Inventors: Thomas G. Kracker, Steven M. Kovach, Tony D. Wang
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Publication number: 20090196063Abstract: A vehicle lamp assembly includes a light source unit (e.g., one or more LEDs) mounted to an associated vehicle for providing illumination and a heat sink thermally coupled to the light source unit for dissipating generated heat therefrom. The heat sink has a main body portion, spaced apart fins extending from the main body portion, and an angled surface section on the main body portion disposed between adjacent ones of the spaced apart fins for urging environmental elements to run off the heat sink.Type: ApplicationFiled: January 31, 2008Publication date: August 6, 2009Inventors: Thomas G. Kracker, Steven M. Kovach, Tony D. Wang
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Patent number: 7568817Abstract: An LED lamp includes a transparent bulb, an LED module comprising a plurality of LEDs received in an inner space of the bulb, and a heat dissipation apparatus supporting and cooling the LED module. The heat dissipation device includes a heat sink having a hollow base and a plurality of fins extending from the base, a first heat conductor vertically supported by the heat sink, a second heat conductor horizontally mounted on the first heat conductor, and a heat pipe thermally connecting the heat sink, the first heat conductor and the second heat conductor together. The LEDs are positioned on the first heat conductor and the second heat conductor, respectively.Type: GrantFiled: June 27, 2007Date of Patent: August 4, 2009Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Tsung-Lung Lee, Xu-Hua Xiao, Li He
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Publication number: 20090185381Abstract: A lamp module (10) comprises an LED lighting element (18) and an electronic driver circuit (42) for supplying electrical power to the LED element (18). An electrical connector (14) is connected to the electronic driver circuit (42). A bayonet coupling (16) is provided for positioning and locking the module (10) within a reflector (70). A metallic heat sink (30) with a top wall (34a, 34b, 34c) and a side wall (36a, 36b, 36c) has an inner cavity (40), where the electronic driver circuit (42) is located. The LED element (18) is located at the top wall (34)a in direct thermal contact to the heat sink (30). A lighting unit comprises the above-described lamp module (10) and a reflector (70) with a mounting cavity (74). The module (10) is mounted within the cavity (74), so that the light emitted from the LED (18) is reflected by a reflector surface (72) of the reflector (70).Type: ApplicationFiled: April 25, 2007Publication date: July 23, 2009Applicant: Koninklijke Philips Electronics N.V.Inventors: Harald Willwohl, Ralph Hubert Peters, Pieter Johannes Wiskerke
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Patent number: 7553047Abstract: A lighting device is provided. The lighting device includes a light source, a light source supporting member which has a surface to which the light source is attached, and a heat sink on an opposite surface of the light source supporting member, for dissipating heat generated by the light source. In addition, the heat sink includes a heat transfer member which protrudes from the surface of the light source supporting member; a plurality of first fins which are spaced apart from each other at intervals in a length direction of the heat transfer member, and are arranged parallel to the light source supporting member; and a plurality of second fins which are spaced apart from each other at intervals, surround outer portions of the first fins, and are arranged perpendicularly to the light source supporting member.Type: GrantFiled: January 9, 2007Date of Patent: June 30, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Su-ho Shin, Kyu-ho Shin, Chang-youl Moon
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Publication number: 20090161382Abstract: A headlamp for vehicles has at least one illumination device with one or more light-emitting diodes and with an optical system that is disposed in the light exit area and focuses the light of the light-emitting diodes for a forward lighting of the vehicle. At least one cooling body is provided for dissipating the heat output by the light-emitting diode, and the cooling body contains a number of cooling ribs. To configure the light cone, the cooling body is disposed in the optical axis of the light exit area of the light-emitting diodes between the light-emitting diodes and the optical system, at least the tip of a cooling rib of the cooling body is located at the focal point between the light-emitting diode and the optical system.Type: ApplicationFiled: December 19, 2008Publication date: June 25, 2009Applicant: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFTInventors: Stefan Eberhardt, Heinz Redlich, Burkhard Leutiger
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Publication number: 20090154189Abstract: A heat-dissipating apparatus for a vehicle lamp includes: a light source unit comprising at least one LED; a housing which houses the light source unit therein and is formed with an opening in a rear portion thereof; a dust cover coupled to the housing at or near the position of the opening; and a cooling fan coupled to the dust cover for dissipating heat generated by the light source unit.Type: ApplicationFiled: December 18, 2008Publication date: June 18, 2009Applicant: SL LIGHTINGInventors: Jin-Hwan CHO, Hak-Bong KIM
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Publication number: 20090154188Abstract: A vehicle lamp includes: N semiconductor light sources, wherein N is an integer of 1 or more; M fans configured to cool the N semiconductor light sources, wherein M is an integer of 1 or more; N current supply units configured to supply first current to the N semiconductor light sources, respectively; and a control unit configured to receive electric power supplied from an electric power source and supply second current to the N current supply units. The control unit includes: N switch elements that correspond to the N semiconductor light sources; M switch elements that correspond to the M fans; and a control circuit configured to control fan drive current supplied to the fans through the switch elements and the second current. The fans are coupled to the control unit.Type: ApplicationFiled: December 8, 2008Publication date: June 18, 2009Applicant: Koito Manufacturing Co., Ltd.Inventors: Masayasu Ito, Fuminori Shiotsu
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Patent number: 7540633Abstract: In lamp unit 10 having light source lamp 1, reflector 2 for reflecting light from light source lamp 1, reflector holding member 11, and reflector cover 15, a plurality of cooling holes 18a are formed in a region of reflector holding member 11 provided with lamp unit positioner 16a. Cooling holes 18a are open toward an upper bulb area, a lower bulb area, and a cathode of the light source lamp, respectively. Stud 22a for fixing reflector holding member 11 has a throughhole extending at the center thereof, so that cooling air fed from high static pressure blower 27 can be sent to cooling holes 18 through tube 28 and the throughhole of stud 22a, thus efficiently cooling the upper bulb area, lower bulb area, and cathode of light source lamp 1 in a concentrative manner with a small amount of air. Thus, the resulting lamp unit, provided by the present invention, can reduce the amount of air required for cooling the lamp, and can use a high static pressure and small fan.Type: GrantFiled: March 29, 2006Date of Patent: June 2, 2009Assignee: NEC Viewtechnology, Ltd.Inventors: Yoshifumi Nishimura, Hiroaki Takamatsu
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Patent number: 7537366Abstract: A metal bracket that supports a plurality of lamp units is configured so as to be housed in the lamp chamber and to be tiltably supported by a lamp body. In this situation, a portion of the lamp body is configured so as to be a heat sink. The heat sink and the metal bracket are connected to each other by a flexible heat pipe. With this arrangement, the heat that is generated by light emitting elements included in lamp units is allowed to move to the heat sink via the metal bracket and the flexible heat pipe, and is thereby released into the space that is outside the lamp chamber. Further, due to the transformation of the flexible heat pipe having flexibility, even when the metal bracket is tilted, it is possible to easily maintain the water-proof function of the lamp without hindering the movement of the metal bracket.Type: GrantFiled: July 11, 2006Date of Patent: May 26, 2009Assignee: Koito Manufacturing Co., Ltd.Inventors: Takashi Inoue, Seiichiro Yagi
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Publication number: 20090129111Abstract: A vehicular lamp is arranged to save power by not driving a cooling fan when an LED is unlit. The vehicular lamp is capable of reducing cost and stopping a supply of current to the LED even in the case of open wiring in a supply of current to the cooling fan. The vehicular lamp includes LEDs connected in series, a cooling fan connected in series with the LEDs and arranged to cool the LEDs. A current supply circuit receives power supplied from a power source and supplies current to the LEDs and the cooling fan.Type: ApplicationFiled: November 13, 2008Publication date: May 21, 2009Applicant: Koito Manufacturing Co., Ltd.Inventors: Masayasu Ito, Fuminori Shiotsu
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Patent number: 7524084Abstract: Three light sources are provided as a light source. A first light source emits a light in red, a second light source emits a light in green, and a third light source emits a light in blue. Each light source is a light source in which a plurality of LEDs (light-emitting diodes) are arranged in the same plane surface. The first light source, the second light source, and the third light source are arranged on the same plane surface. Furthermore, lines connecting the first light source, the second light source, and the third light source form a triangle. Light fluxes (primary optical axes) of each light source are parallel with each other. The first light source, the second light source, and the third light source are arranged on one piece of a cooling plate.Type: GrantFiled: March 29, 2005Date of Patent: April 28, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Takashi Ikeda, Hideyuki Kanayama
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Patent number: 7521872Abstract: A lamp assembly (50) employs a reflector (52) defining a light reflecting area (53), and a heat sink (54) defining a circuit housing area (55). A LED assembly (51) is disposed within the light reflecting area (53) and heat sink (54) dissipates heat away from LED assembly (51). One or more LEDs of LED assembly (51) emit a light in response to a flow of a LED current through the LEDs. One or more optical power sensors of LED assembly (51) sense an emission of the light by LED(s). A LED driver circuit (30) is disposed within the circuit housing area (55) to control the flow of the LED current through the LED(s) as a function of a sensing of the emission of the light by the optical power sensor(s) and a desired level of one or more lighting variables associated with the LED(s).Type: GrantFiled: September 7, 2004Date of Patent: April 21, 2009Assignee: Koninklijke Philips Electronics, N.V.Inventor: Gert W. Bruning
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Patent number: 7513659Abstract: A sub-assembly for a light-projecting module has an array of LEDs mounted on a circuit board potted in a tray at the bottom thereof by a solidified body of potting material. The body of potting material and the tray are heat-conductive and serve to dissipate heat generated by the LEDs. A light-emitting module includes the sub-assembly and a reflector. The reflector has a base which is assembled in heat-conductive relationship with the tray, so as to facilitate dissipation of heat generated by the LEDs. The reflector is a parabolic reflector which collects light from the LEDs and projects the light as a beam. The reflector contains an optical element for concentrating or diffusing the light projected from the module. The module may be assembled in a housing having an opening through which the light projects so as to provide a light bar suitable for mounting on the dash or windshield of a vehicle.Type: GrantFiled: September 1, 2006Date of Patent: April 7, 2009Assignee: Star Headlight & Lantern Co., Inc.Inventors: Stephen T. Vukosic, R. Michael Datz, Orinna J. Starr
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Publication number: 20090080211Abstract: A vehicle lighting device is provided with: a lamp chamber defined by a lamp body and a cover; a light source unit including a semiconductor light emitting element as a light source and provided within the lamp chamber; a metallic heat transfer member attached to the lamp body and penetrating between an outside and an inside of the lamp chamber; and an air blower disposed between the light source unit and the heat transfer member so that an air blowing direction of the air blower directs toward the heat transfer member.Type: ApplicationFiled: September 17, 2008Publication date: March 26, 2009Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Yuji YASUDA
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Patent number: 7505268Abstract: The present invention provides an electronic device package that can be fabricated using standard package fabrication technologies while providing a desired level of thermal transfer capability to an attachable thermal management system. The electronic device package according to the present invention comprises a housing that is specifically designed to couple with an evaporator portion of a thermal management system, for example a heat pipe. One or more electronic devices are mounted in thermal contact with the evaporator portion of the thermal management system. Upon completion of the fabrication of the package using standard techniques, the evaporator portion of the electronic device package is operatively coupled with a secondary portion of the thermal management system. In this manner the electronic device package can be fabricated to incorporate a desired thermal management system, while being fabricated using standard package fabrication processes and machinery.Type: GrantFiled: April 5, 2006Date of Patent: March 17, 2009Assignee: TIR Technology LPInventor: Philippe Schick
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Patent number: 7488096Abstract: A lamp assembly including an integral reflector and heat sink having a reflector portion comprising an integrated heat sink and a plurality of integral cooling fins connected to the integrated heat sink, a cathode assembly mechanically coupled to the reflector portion, an anode mechanically coupled to the reflector portion and electrically isolated from the cathode assembly, and at least one thermal stress reduction feature.Type: GrantFiled: March 29, 2005Date of Patent: February 10, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Winthrop D. Childers, William R. Wagner, John M. Koegler, III, Anurag Gupta, Peter Guy Howard, Timothy F. Myers, Grant A. Webster
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Patent number: 7478932Abstract: A headlamp assembly for a motor vehicle having a light source, a chamber that receives the light source and a cooling channel for removing heat from the chamber. A conductive wall and an insulating wall cooperate to define the chamber and the channel. The conductive wall has a substantially higher thermal conductivity than the insulating wall to promote the heat exchange between the chamber and the cooling channel and to reduce heat exchange between the cooling channel and the relatively hot engine compartment.Type: GrantFiled: November 29, 2005Date of Patent: January 20, 2009Assignee: Visteon Global Technologies, Inc.Inventors: Jeyachandrabose Chinniah, Edwin M. Sayers, Harvinder Singh, James D. Tarne, Alan J. Duszkiewicz, Paul A. Lyon
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Patent number: 7470049Abstract: An apparatus including at least one LED mounted to a printed circuit board, a reflector including at least one heat stake, and a mounting plate comprising at least one aperture for receiving the at least one heat stake. The at least one LED is positioned between the reflector and the mounting plate such that the at least one LED is held in position when the at least one heat stake is received within the at least one aperture.Type: GrantFiled: April 23, 2007Date of Patent: December 30, 2008Assignee: Gentex CorporationInventors: Jeremy A. Walser, Kenton J. Ypma, Daniel J. Bostwick, John K. Roberts, Robert Steel, Steven J. Miskelley, Darin D. Tuttle
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Patent number: 7465078Abstract: A heat-dissipating headlamp assembly comprises a housing including a light source such as a light-emitting diode (LED) disposed therein, and a detachable heat shroud covering the rearward portion of the housing. In the preferred embodiment the housing includes a pair of opposing detents, and the detachable heat shroud includes a pair of opposing protrusions that cooperate with the detents to hold the shroud in position. The assembly further includes a mounting bracket extending downwardly from the rearward portion for attachment to a headband, spectacle frames, or other head-worn item, and the heat shroud includes an upper rearward notch to accommodate the electrical cable connected to the light source and a lower rearward notch to accommodate the mounting bracket. The heat shroud is generally cylindrical in shape, and so, too, is the housing, at least where the heat shroud attaches thereto.Type: GrantFiled: November 1, 2006Date of Patent: December 16, 2008Assignee: General Scientific CorporationInventor: Byung Jin Chang