Blower Patents (Class 353/57)
  • Patent number: 7976171
    Abstract: The image projection apparatus includes a temperature detector that detects a temperature inside of the apparatus, and a controller that performs a protection operation when the temperature detected by the temperature detector is higher than a predetermined temperature. The controller measures an elapsed time from when a power of the apparatus is turned on, and changes the predetermined temperature in accordance with the elapsed time. This apparatus can avoid mistaken activation or inactivation of a protection function at the time of re-lighting of the light source due to the influence of the residual heat after the light source is turned off.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: July 12, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ayumu Kameoka, Toshiyuki Noda
  • Patent number: 7972012
    Abstract: A projector includes a cooling device for performing cooling of a target object housed inside a housing, a first temperature sensor disposed in an anterior stage of the target object on a cooling path formed by the cooling device inside the housing, and for measuring a first detection temperature in an anterior area of the cooling among peripheral areas of the target object, a second temperature sensor disposed in a posterior stage of the target object on the cooling path, and for measuring a second detection temperature in a posterior area of the cooling among the peripheral areas, and a control device for performing calculation regarding the temperature of the target object from the first detection temperature and the second detection temperature, and controlling the cooling device based on the result of the calculation.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: July 5, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Hisamaro Kato
  • Patent number: 7972013
    Abstract: A light source includes an arc tube which emits light, a reflector which reflects the light emitted from the arc tube, and a holding unit which holds the reflector. The holding unit has an air supply port through which cooling air is introduced into the light source on the light emitting side of the arc tube, and a first rectifying portion which guides cooling air having been supplied from the air supply port and passed through the light emitting side of the arc tube toward an area above the arc tube.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: July 5, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Shigeyasu Soma, Takeshi Takezawa
  • Publication number: 20110157562
    Abstract: A projector includes a plurality of lamps serving as light sources, the lamps being arranged next to each other, and a single exhaust fan disposed adjacent to the lamps, the exhaust fan discharging air around the lamps.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 30, 2011
    Inventors: Koji OKAMOTO, Kohei Kabuki
  • Patent number: 7967447
    Abstract: An overheat prevention device comprises an inclination angle detector, a cooling module, and a control circuitry. The inclination detector is adapted to detect a first inclination angle and a second inclination angle, which an light source module is subject to relative to a reference plane, and transmit a first inclination signal and a second inclination signal, respectively. In response to the first inclination signal, the control circuitry alters the cooling module from a first operation mode to a second operation mode. In response to the second inclination signal, the control circuitry alters a projection apparatus from the first operation mode to the second operation mode.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: June 28, 2011
    Assignee: Delta Electronics, Inc.
    Inventors: Chia-Jui Lin, Hui-Chih Lin
  • Publication number: 20110141440
    Abstract: A projection type display device includes a lamp, polarization means (21) for converting light emitted from the lamp to polarized light, a liquid crystal panel for modulating the polarized light to form an image light, a projection lens (7) for projecting the image light, fans (11R, 12G, 23B) for taking outside air in and for supplying the outside air to the polarization means and the liquid crystal panel, a filter for collecting dust contained in the outside air, a first detection means for detecting temperature T1 of the outside air, a first control means for controlling the number of revolutions of the fan in response to temperature T1, a second detection means for detecting temperature T2 of the polarization means, a storage means for storing reference temperature T3, and a second control means. The second control means issues a warning or stops the projection type display device when temperature T2 is higher than reference temperature T3.
    Type: Application
    Filed: August 15, 2008
    Publication date: June 16, 2011
    Inventor: Takayuki Okada
  • Patent number: 7954956
    Abstract: A projection-type display apparatus includes an optical modulation device having a lamp emitting a light, and a projection optical system projecting the light on a screen in a magnified form, with the projection optical system including a plurality of reflection mirrors. In addition, a fan system air-cools reflective surfaces of the plurality of reflection mirrors. The fan system includes a fan and a controller for controlling the fan based on luminance output of the lamp.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: June 7, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Noboru Nabeta
  • Patent number: 7946712
    Abstract: A projector apparatus equipped with a metal plate structure serving as a light shield against a light source and as a heat radiator is provided. The metal plate structure is arranged over the light source to hide the light source. The metal plate structure extends farther to a cooling fan and connects to the upper end of the air expiration face of the fan. The metal plate structure thus serves as the top plate of the baffle section of the exhaust duct of the fan for leading the air expired from the fan. The metal plate structure also serves as a shield plate, which can be connected to a grounded metal piece.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: May 24, 2011
    Assignees: Sanyo Electric Co., Ltd., SANYO Technology Center (Shenzhen) Co., Ltd.
    Inventors: Xianglin Zhang, Qiang Lv, Shoji Okazaki, Yanshan Huang, Tadashi Renbutsu, Toshihiro Saruwatari, Xiangfei Kong, Wentian Tang
  • Patent number: 7946713
    Abstract: A display apparatus, comprises a filter unit 33 attached on an air inlet opening 28a, having such a filter 36 that a suction negative load generating at the air inlet opening 28a formed in an upper cabinet 3 comes to be smaller than the suction load generating at gaps 29a and 30a defined in the upper cabinet 3, when driving a cooling unit 18, for sucking an air from the upper cabinet 3 and discharging the air used for cooling into the upper cabinet 3, when cooling down optical parts, such as, display devices 15R, etc., and a polarizing plate 16R, etc., of an optic unit 9.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: May 24, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yuji Kishi, Nobuyuki Kaku
  • Patent number: 7942532
    Abstract: A projecting device includes a casing, an optical engine, and a heat-dissipating mechanism. The casing includes a lower casing body and an upper casing body covering the lower casing body. The optical engine is disposed in the casing, and includes a light source module. The heat-dissipating mechanism includes a first blower disposed uprightly in the casing and adjacent to one side of the light source module for driving airflow to cool the light source module and the casing. The first blower has a thickness greater than one half of a length thereof and greater than one half of a width thereof. With the arrangement of the first blower, a sufficient amount of airflow is provided to the system to improve the heat-dissipating effect and to enhance system reliability.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: May 17, 2011
    Assignee: Coretronic Corporation
    Inventors: Nien-Hui Hsu, Shang-Hsuang Wu, Pel-Yu Wu
  • Patent number: 7938548
    Abstract: A projection device includes: a projector unit that has at least a light source and a projection optical system housed in a chassis; a control unit that is assembled with a chassis separate from the chassis of the projector unit; and a rotation support member that rotatably supports the projector unit and the control unit around a rotation axis that extends perpendicular to a surface of the chassis of the projector unit and a surface of the chassis of the control unit, with these surfaces facing to one another.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: May 10, 2011
    Assignee: Nikon Corporation
    Inventors: Hirotake Nozaki, Nobuhiro Fujinawa, Akira Ohmura
  • Patent number: 7934838
    Abstract: A projector includes a case, a separating plate, an electronic component system, a light source device and a blocking device. The case has a space defined therein. The separating plate is arranged in the case to divide the space into a first space and a second space. The electronic component system is arranged in the first space. The light source device for emitting light is arranged in the second space. The blocking device has a blocking plate which is arranged adjacent to the separating plate and controlled to be located from a first position and a second position. When the blocking plate is located at the first position, air flows from the first space into the second space. When the blocking plate is located at the second position, air in the second space is prevented from entering into the first space.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: May 3, 2011
    Assignee: Coretronic Corporation
    Inventors: Hua-Shing Chen, Chin-Tsao Chang
  • Patent number: 7926953
    Abstract: A projector includes: an optical component; a sealed structure that includes an optical component casing accommodating the optical component inside, a cooling device, a plurality of duct members including a flow-path-upstream-side duct member that guides the air from the cooling device to the optical component casing, and a ringed air flow passage defined by the duct members, the optical component casing including an air inlet for introducing air into the optical component casing and an air outlet for exhausting the air to an outside of the optical component casing, the cooling device including a thermoelectric conversion element having a heat absorbing surface that faces an inside of the sealed structure and a heat releasing surface that faces an outside of the sealed structure, the duct members introducing the air into the optical component casing via the air inlet and re-introducing the air that is exhausted from the inside to the outside of the optical component casing via the air outlet again into the op
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: April 19, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Yanagisawa, Yasunaga Momose
  • Patent number: 7918561
    Abstract: An optical system (light guiding optical system) for guiding G-light and R-light to liquid crystal panels is protruded in an opposite direction from projection optical system with regard to an optical axis of a light source. A space is created between an optical engine and a wall surface, and air stream for suction fan is thus secured. A distance (H1) between the optical engine and the wall surface can be reduced to, for example, a thickness of an external housing of the projector. Since a unit comprising the light source and a suction fan is retracted in a direction of the projection optical system than a protruded portion of the light guiding optical system, a distance (H2) from an end edge of the optical engine to a projection light emitting position can be reduced.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: April 5, 2011
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takashi Ikeda, Shinya Matsumoto
  • Patent number: 7918564
    Abstract: A cooling system for a projector is provided and disposed in the projector. When a sensing temperature of the projector sensed by a thermal sensor of the cooling system is higher than a maximum temperature, a control module controls a fan to increase a rotation speed. When the sensing temperature of the projector sensed by the thermal sensor is lower than a minimum temperature, the control module controls the fan to decrease the rotation speed. As a result, the temperature of the projector is maintained within a proper range.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: April 5, 2011
    Assignee: Cortronic Corporation
    Inventors: Nien-Hui Hsu, Sen-Ming Hsu, Lu-Wen Chien, Wei-Jen Cheng
  • Patent number: 7896500
    Abstract: A liquid crystal rear projector device of the present invention includes a lamp unit providing a light source, a cooling fan for cooling the lamp unit, and an optical system for generating color image light with the lamp unit providing a light source, the lamp unit including a light emitting tube providing a light source, and a reflector for reflecting light emitted from the light emitting tube toward the optical system. The reflector has an air introduction hole for introducing air discharged from the cooling fan into the reflector, which is provided near the spherical portion of the light emitting tube, and faces to a vertical top of the spherical portion to blow the air to the top.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: March 1, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Shinichi Shiotsu
  • Patent number: 7891846
    Abstract: A light source apparatus is disclosed which allows effective cooling of an arc tube even with a small amount of wind. The light source apparatus has a light emitter and a reflector which reflects light from the light emitter and causes the reflected light to emerge. The light source apparatus also has a wind-guiding member which has a flow inlet and a flow outlet of cooling wind and has a wall portion at a position opposite to the flow inlet, the wall portion guiding the cooling wind toward the light emitter in the reflector. The light source apparatus which has a reflector to which an arc tube is fixed via a connecting member, and has a first flow path on which cooling wind from a fan flows to cool an area of the arc tube closer to the connecting member, and a second flow path on which cooling wind from the fan flows to cool an area of the arc tube closer to a light emitting portion. The second flow path is formed separately from the first flow path.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: February 22, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiyuki Noda
  • Patent number: 7891820
    Abstract: The invention discloses a method for igniting a lamp of a projector. The method includes steps of: (a) sensing a first temperature difference in response to power-off of the projector; (b) in response to power-on of the projector, detecting an aftercooling time and judging whether it is smaller than a predetermined cooling time, if YES, perform step (c); otherwise, perform step (g); (c) sensing a second temperature difference; (d) judging whether a ratio of the second temperature difference to the first temperature difference is larger than a threshold, if YES, perform step (e); otherwise, perform step (g); (e) calculating a re-cooling time; (f) controlling a fan to operate for the re-cooling time to cool the lamp down; and (g) igniting the lamp.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: February 22, 2011
    Assignee: BenQ Corporation
    Inventors: Chi-Hung Hsiao, Chun-Ming Shen, Ke-Chun Chuang
  • Publication number: 20110025986
    Abstract: A projector includes an optical module, a lens and a heat conducting member. The heat conducting member is disposed between the optical module and the lens. The heat conducting member is used for conducting heat from the lens to the optical module.
    Type: Application
    Filed: July 13, 2010
    Publication date: February 3, 2011
    Inventors: Yen-Feng Ko, Tsung-Hsun Wu
  • Publication number: 20110025982
    Abstract: A projector adapted to project an image includes: a detection section adapted to detect a motion of the projector; a determination section adapted to compare a detection result of the detection section with a predetermined criterion to perform determination on whether the projector is in a moving state or in a resting state; an adjustment section adapted to begin adjustment of at least one projection condition of the image in response to a transition of a determination result of the determination section from the moving state to the resting state; an auxiliary operation section adapted to auxiliary support the projection of the image by performing an operation with vibration; and a criterion determination section adapted to change the criterion based on a operation state of the auxiliary operation section.
    Type: Application
    Filed: July 26, 2010
    Publication date: February 3, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tadao Takahashi
  • Publication number: 20110025987
    Abstract: A projector includes: an image projection unit which modulates light emitted from a light source and projects the modulated light; a cooling fan which cools the image projection unit; a light source control unit which controls lighting of the light source; a cooling control unit which controls operation of the cooling fan; an input operation unit which receives input operation; and a control unit which allows the light source control unit to decrease the luminance of the light source or allows the cooling control unit to increase the rotational speed of the cooling fan during the period from the time when the input operation unit receives the first ending operation to the time when the input operation unit receives the second ending operation.
    Type: Application
    Filed: July 26, 2010
    Publication date: February 3, 2011
    Applicant: Seiko Epson Corporation
    Inventor: Yoshiyuki Furumi
  • Publication number: 20110019159
    Abstract: A projector includes: an optical system includes a light source, a light modulation element for modulating light emitted from the light source to form an optical image, and a projection lens for projecting the optical image, the optical system is structured such that an illumination optical axis of the light source and a projection optical axis of the projection lens cross each other substantially at right angles in the plan view; and a cooling fan configured to the light modulation element, and has a rotation axis crossing each other substantially at right angles with a discharge direction where a cooling air is discharged, the cooling fan is disposed in the vicinity of the projection lens and on the side where the light source is provided such that the rotation axis extends in the thickness direction of the projector.
    Type: Application
    Filed: July 8, 2010
    Publication date: January 27, 2011
    Applicant: Seiko Epson Corporation
    Inventors: Akira Egawa, Kaname Nagatani, Kunihiko Takagi
  • Publication number: 20110019160
    Abstract: An image display apparatus includes: an image display unit for forming an optical image; and an outer housing for housing the image display unit. The outer housing includes a window for displaying the optical image to the outside. The image display apparatus includes, in the outer housing, a heat insulator placed so as to surround the image display unit and a cooling device for cooling inside the outer housing, and the cooling device has a variable cooling capacity. The image display apparatus is abatable to changes in the ambient temperature and the internal power consumption and the presence or absence of sunlight and can be installed in a variety of outdoor environment, so that a high degree of reliability can be achieved.
    Type: Application
    Filed: July 26, 2010
    Publication date: January 27, 2011
    Applicant: Panasonic Corporation
    Inventors: Hiroshi Kitano, Takayuki Kimoto
  • Patent number: 7874685
    Abstract: A projection system includes an information processing device for processing image information, a projector for modulating a light beam emitted from a light source device in accordance with the image information processed by the information processing device and enlargedly projecting the modulated light beam, and an information transfer section for connecting the information processing device and the projector to each other so as to communicate information. The projector includes, a cooling device for cooling internal heat generator, and a power generation section for supplying at least the cooling device with a drive voltage based on the electric power supplied via the electric power transmission path. The information processing device includes a cooling device control section for generating a control instruction for performing drive control of the cooling device and for outputting the control instruction to the cooling device via the information transfer section.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: January 25, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Yasunaga Miyazawa
  • Publication number: 20110007282
    Abstract: A projection apparatus and a method for adjusting a driving voltage of the projection apparatus are provided. The projection apparatus comprises an illuminant module, an output voltage control module, an illuminant driver module, and an illuminant driver management module. The output voltage control module is configured to output a driving voltage. The illuminant driver module is configured to output an illuminant voltage to the illuminant module after receiving the driving voltage. The illuminant driver management module is configured to receive the illuminant voltage and to detect a variation in the illuminant voltage. Then, the illuminant driver management module outputs a control signal to the output voltage control module according to the variation of the illuminant voltage. Finally, the output voltage control module adjusts the driving voltage according to the control signal.
    Type: Application
    Filed: May 26, 2010
    Publication date: January 13, 2011
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Yao-Hsien HUANG, Chao-Shun YANG
  • Patent number: 7866825
    Abstract: A blind (10) for a projector includes a bracket (20) mounted to the projector, and a folded fin (30) fixed on the bracket and covering a hot air vent of the projector. The folded fin includes a plurality of parallel fins (32) and a plurality of upper and lower tabs (34, 36) interconnecting the fins. Each of the fins defines an angle of 135 degrees with a plane defined by the lower tabs. Furthermore, a projection of each of the fins on the plane defined by the lower tabs overlaps a part of a corresponding adjacent fin. Thus, the blind can prevent a light leakage from the projector, while allow a heated airflow to be expelled out of the projector simultaneously.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: January 11, 2011
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Hui Shen, Gen-Ping Deng, Yi-Qiang Wu
  • Patent number: 7866828
    Abstract: An image display apparatus has a first exhaust fan (13) for mainly exhausting air from a light source unit (9) and discharging the air to the outside of the image display apparatus and a second exhaust fan (14) for mainly exhausting air from a power supply unit (11) and discharging the air to the outside of said image display apparatus. The inspiration face of the second exhaust fan is arranged to partly overlap the expiration face of the first exhaust fan. Accordingly, the internal temperature of the image display apparatus, and hence the temperature of the exhaust air, can be efficiently reduced, and at the same time fan noise of the fans can be reduced. As a result, uprating of power of the light source unit and downsizing of an image display apparatus can be simultaneously achieved.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: January 11, 2011
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Norio Nakagawa, Atsushi Kubo
  • Patent number: 7862186
    Abstract: This projector comprises a source lamp, a lamp storage portion, storing the source lamp therein, including an air discharge opening for discharging internal air from the lamp storage portion and a netlike member so arranged as to cover the outer side of the air discharge opening of the lamp storage portion for inhibiting fragments of the source lamp from being discharged outward from the lamp storage portion through the air discharge opening when the source lamp is broken. The lamp storage portion further includes a protrusion provided on the outer side surface close to the air discharge opening to protrude in a direction intersecting with the extensional direction of the netlike member with a function of inhibiting the fragments of the source lamp from passing through a clearance between the lamp storage portion and the netlike member.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: January 4, 2011
    Assignee: Funai Electric Co., Ltd.
    Inventor: Shingo Hamada
  • Publication number: 20100328620
    Abstract: A filter device includes: a filter unit including a housing in which a roll filter stretched between a feeding shaft and a take-up shaft is housed, the housing including, between the two shafts, an opening for exposing a part of the filter; a filter installation detection sensor for detecting installation of the filter unit; a filter winding driving unit for taking up or rewinding the installed filter; and a control unit for controlling operations of the filter winding driving unit based on a detection signal from the filter installation detection sensor. When the control unit determines based on the detection signal from the filter installation detection sensor that the filter is installed, the control unit causes the filter winding driving unit to rewind the filter by a predetermined amount and determines whether the filter is new or not based on the rewinding. By detecting filter replacement, information on the replaced filter can be reset.
    Type: Application
    Filed: June 23, 2010
    Publication date: December 30, 2010
    Applicant: PANASONIC CORPORATION
    Inventor: Masaya Yamamoto
  • Patent number: 7854517
    Abstract: A projector includes a light source unit, a light source side optical system, a display device for producing a projected image to be projected, a projection side optical system for projecting the projected image produced by the display device, a blower acting as a cooling fan for cooling the light source unit, an exhaust air temperature reducing unit for reducing the temperature of highly heated air which results from the cooling of the light source unit by the cooling fan, and exhaust vents for expelling exhaust air from the exhaust air temperature reducing unit to the outside. The exhaust air temperature reducing unit is made up of a heat pipe and fins.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: December 21, 2010
    Assignee: Casio Computer Co., Ltd.
    Inventor: Toshiyasu Tsubura
  • Publication number: 20100315600
    Abstract: A projector includes a light source, a pump which supplies a compressed gas to cool the light source, and an ejector member having a hole, in which, a tube connects the pump to the ejector member, the compressed gas is discharged from the hole, and a diameter of the hole is in a range from 0.2 mm to 0.4 mm.
    Type: Application
    Filed: July 8, 2010
    Publication date: December 16, 2010
    Applicant: NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Yoshifumi Nishimura, Hiroaki Takamatsu
  • Patent number: 7850310
    Abstract: A projection display device may include a housing which can be placed on a placing face with a lower face portion thereof distanced from the placing face; a fan, disposed within the housing, to suction from a first air inlet formed in the lower face portion; a filter detachably provided to the housing the as to close off the first air inlet; and a filter replacement access lid detachably provided to the housing so as to cover the filter closing off the first air only from the placing face side, with a second air inlet for suctioning of the fan provided in the filter replacement access lid; wherein the filter replacement access lid may be formed so as to protrude toward the placing face side from the lower face portion; and wherein the second air inlet may be formed in a face of the filter replacement access lid intersecting the lower face portion.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: December 14, 2010
    Assignee: Sony Corporation
    Inventors: Takashi Nagahata, Nobuaki Higuchi, Yuuki Itou, Nobuyuki Hara
  • Patent number: 7850309
    Abstract: Elements of an optical system (12) of a projection type image display apparatus are stored in an optical system storage (46) having an upper opening in such a way that the optical element to be arranged close to a light source is fitted in the frame provided in the high-temperature region of the optical system storage (46) close to the light source, while the rest of the optical elements are respectively fitted in the frames in the low-temperature region of the optical system storage (46) remote from the light source. The upper opening in the high-temperature region is covered, in the low-temperature region, with a resilient metal lid (471), and, in the low-temperature region, covered with a resilient resin lid (472).
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: December 14, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yasuyuki Hirouchi, Taichi Yoshimura
  • Patent number: 7845803
    Abstract: The invention enables efficient cooling of: a light source providing source light; an optical system adapted to split the source light received from the light source into three primary colors R, G, and B; and a power supply unit for supplying electric power to various electric components installed in a casing of a projector apparatus. To do so, a first fan is arranged between the light source and the power supply unit such that its air inspiration face is directed to the power supply unit and its air expiration face is directed to the light source. Further, a second fan, adapted to inspire air from within the projector apparatus, is provided in the central area of the projector apparatus. On the air expiration side of the second fan is a cooling duct for cooling the light source and optical system.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: December 7, 2010
    Assignees: Sanyo Electric Co., Ltd., Shenzhen Huaqiang Sanyo Technology Design Co., Ltd.
    Inventors: Qiang Lv, Xianglin Zhang, Toshihiro Saruwatari, Yanshan Huang, Tadashi Renbutsu, Shoji Okazaki, Xiangfei Kong, Wentian Tang
  • Patent number: 7845804
    Abstract: A projection type image display apparatus of the invention has a lamp mounting mechanism, which has an aluminum lamp holder (166) intervening between the lamp (16) and the resin lamp holder (167) and has a section exposed out of the resin lamp holder (167). The lamp (16) is securely fixed in position on the aluminum lamp holder (166) by mounting the lamp (16) on the aluminum lamp holder (166) from above and then folding the top section (166d) towards the top end of the lamp (16). This lamp mounting mechanism can suppress the temperature of the resin lamp holder without providing a cooling fan with a large amount of power and suppress fan noise, thereby simultaneously enabling uprating of the power of the lamp and downsizing of the image display apparatus.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: December 7, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Norio Nakagawa, Atsushi Kubo
  • Patent number: 7832872
    Abstract: The invention discloses a projector including a light-source device, a guiding passage, and a fan. The light-source device includes a light-source lamp for emitting light. The guiding passage has an outlet and an inlet. There is a block disposed in the vicinity of the outlet. The outlet of the guiding passage is connected to the light-source device, and the inlet of the guiding passage is connected to the fan. The fan blows an air flow into the guiding passage. When the air flow passes through the block disposed in the vicinity of the outlet, the air flow will be divided into a first air flow and a second air flow. Afterward, the first air flow cools a first portion of the light-source device, and the second air flow cools a second portion of the light-source device. Accordingly, temperature of the light-source lamp can be stably maintained.
    Type: Grant
    Filed: February 19, 2007
    Date of Patent: November 16, 2010
    Assignee: Qisda Corporation
    Inventors: Chien-Fu Chen, Hung-Yen Huang, Hung-Jen Wei
  • Publication number: 20100277701
    Abstract: A filter unit includes: a feeding shaft 24 around which an unused part of a roll filter 18 is wound; a take-up shaft 25 for taking up the filter from the feeding shaft; a motor 40 for rotating and driving the take-up shaft so as to take up the filter; a filter unit housing 26 for housing the feeding shaft and the take-up shaft and including, between the both shafts, an opening for exposing the filter; rotation detection patterns 42 that rotate in connection with transfer of the filter caused by taking up the filter and are placed at predetermined intervals in a circumferential direction in which the rotation detection patterns rotate; a pattern sensor 43 for detecting rotation of the rotation detection patterns and outputting a detection signal whose amplitude fluctuates in accordance with the predetermined intervals; and a used filter amount detecting unit for detecting a used amount of the filter based on a correspondence between a period at which the amplitude of the detection signal fluctuates and an amou
    Type: Application
    Filed: April 26, 2010
    Publication date: November 4, 2010
    Applicant: PANASONIC CORPORATION
    Inventor: Masaya YAMAMOTO
  • Patent number: 7824038
    Abstract: A method for controlling a dual lamp module applied to a projection apparatus is provided. The dual lamp module includes a first lamp and a second lamp. The method for controlling a dual lamp module includes providing a first operating power to the first lamp, and then determining whether the first lamp is turned on or not. If the first lamp fails to be turned on, stopping providing the first operating power to the first lamp, and providing a second operating power to the second lamp. The second operating power is greater than the first operating power.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: November 2, 2010
    Assignee: Young Optics Inc.
    Inventors: Chi-Chui Yun, Pin-Chun Huang, Wei-Sheng Chang
  • Publication number: 20100265468
    Abstract: A heat dissipation module includes a heat-absorbing unit, a first heat pipe, a second heat pipe, and a heat-dissipating unit. The heat-absorbing unit is adapted to contact the heat source thermally. The first heat pipe has a first heat-absorbing section being connected to the heat-absorbing unit and a first heat-dissipating section. The second heat pipe has a second heat-absorbing section being connected to the heat-absorbing unit and a second heat-dissipating section. The heat-dissipating unit includes a first fin assembly and a second fin assembly. The first heat-dissipating section is connected to the first fin assembly along a first extending direction, the second heat-dissipating section is connected to the second fin assembly along a second extending direction, the first extending direction and second extending direction are oblique to each other, and a part of the first fin assembly and a part of the second fin assembly are inset to each other.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 21, 2010
    Inventors: Tai-Wei Lin, Jia-Bin Huang, Chi-Chui Yun
  • Patent number: 7815315
    Abstract: A cooling device with a thermoelectric conversion element having a heat absorbing surface and a heat releasing surface includes: a heat-absorbing-side heat conductive member connected with the heat absorbing surface in a heat-conductive manner; a heat-releasing-side heat conductive member connected with the heat releasing surface in a heat-conductive manner; a plurality of heat-absorbing-side fin members that is disposed to the heat-absorbing-side heat conductive member, protrudes in an out-of-plane direction from an end surface remote from the heat absorbing surface and extends in a predetermined direction; and a plurality of heat-releasing-side fin members that is disposed to the heat-releasing-side heat conductive member, protrudes in an out-of-plane direction from an end surface remote from the heat releasing surface and extends in a predetermined direction intersecting with the plurality of heat-absorbing-side fin members in plan view.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: October 19, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Yasunaga Momose, Yoshiyuki Yanagisawa
  • Patent number: 7806531
    Abstract: A projector includes: a casing having a surface; a cooling medium flowpath provided inside the casing, through which a cooling medium is allowed to flow; and a radiator in which a part of the cooling medium flowpath is arranged, the radiator being deployable by rotating with respect to the casing, and adapted to be accommodated in the casing and along the surface of the casing.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: October 5, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Makoto Zakoji, Takeshi Seto, Akira Egawa, Kunihiko Takagi
  • Publication number: 20100238415
    Abstract: A projection display apparatus includes: a light source; a light source control unit that controls starting and shutting-off of the light source; a cooling air generator that generates cooling air for cooling the light source in a selective manner in accordance with the degree of cooling capability expressed in a plurality of levels; and a cooling control unit that instructs the cooling air generator to generate cooling air having a degree of cooling capability higher than that at a regular level in response to the situation in which the light source control unit fails to start the light source.
    Type: Application
    Filed: January 27, 2010
    Publication date: September 23, 2010
    Applicant: Sony Corporation
    Inventor: Takanao KOMORI
  • Publication number: 20100208215
    Abstract: A light source device, includes: an arc tube, and a pair of sealing portions; a reflector; and a sub mirror configured to reflect the light emitted from the arc tube toward the arc tube, and disposed of the other side of the sealing portion in such a manner as to cover a part of the outer surface of the tube spherical portion of the side of the illumination area, the sub mirror include a plurality of reflection members provided with reflection surfaces having different shapes, and the distance between the illumination axis and the outer shape of one of the adjoining reflection members is different from the distance between the illumination axis and the other of the adjoining reflection members.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 19, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Susumu WADA
  • Patent number: 7775689
    Abstract: A lamp unit includes a reflector with a lamp mounted therein, a reflector holder holding the reflector, and an ejector member fixed to the reflector holder, for ejecting air to cool the lamp, the ejector member including an insertion member with a tubular stud inserted therein for supplying compressed air, a fluid passage forming member having a fluid passage for being supplied with air from the stud, and a hole defined in a distal end of the ejector member.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: August 17, 2010
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yoshifumi Nishimura, Hiroaki Takamatsu
  • Publication number: 20100188641
    Abstract: A projector includes: a lighting device which includes a light source unit for emitting illumination light, and a light control device for controlling the amount of illumination light passing through the light control device by shielding a part of the light from the light source unit; a light modulation unit illuminated by illumination light emitted from the lighting device; and a projection system which projects image light having passed the light modulation unit, the lighting device has an air supply device configured to cool the light control device by cooling air supplied from the air supply device to a cross flow path which crosses an optical path passing the light control device.
    Type: Application
    Filed: January 13, 2010
    Publication date: July 29, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Jiro MOMOSE, Fumihide SASAKI
  • Patent number: 7762674
    Abstract: A projection-type display device includes a housing, at least a part of which has a hollow wall, and a light source, a light valve, a projection optical system, a reflection mirror, and a screen all disposed in a single, common housing space in the housing. In addition, a first air guide path, provided between the light source and the hollow wall, guides hot air generated by the light source directly to the hollow wall.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: July 27, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshinori Hirobe
  • Patent number: 7758193
    Abstract: A projection apparatus comprises a housing and further comprises a light source, an imaging system, an optical engine, a first blower, and an axial fan installed in the housing, and an air outlet is disposed on the housing. The light source is installed adjacent to the air outlet. The optical engine is installed between the imaging system and the light source. The first blower is installed at one end far away from the air outlet, and an exhaust port of the first blower faces one portion of the light source. The axial fan is installed at one side of the light source installed the first blower, and the light source is positioned between the air outlet and the axial fan. An exhaust port of the axial fan faces the light source, and a suction port of the axial fan is adjacent to the suction port of the first blower.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: July 20, 2010
    Assignee: Coretronic Corporation
    Inventors: Nien-Hui Hsu, Sen-Ming Hsu, Tsung-Ching Lin
  • Patent number: 7753532
    Abstract: The present invention provides a projection type display unit including a light source, an optical unit including a light valve and a projection lens, and a cooling section for cooling the light source and the optical unit. The light source and the optical unit as well as the cooling section are incorporated in an armor cabinet. A highly heat conductive sheet metal component part is disposed in a space between a lamp as the light source and the armor cabinet.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: July 13, 2010
    Assignee: Sony Corporation
    Inventors: Takashi Nasu, Takuji Ohkubo, Masahiro Saito, Yoshihisa Wada
  • Patent number: 7748850
    Abstract: An improved projector device and the cooling device therefor are provided. The provided projector device includes a light source including a lead wire, a first foil having a first front-end and a first rear-end, and a second foil having a second front-end and a second rear-end, and includes a first blower configured on a first side of the light source and generating a first air to cool the bulb portion and the second foil of the light source, and a second blower configured on a second side of the light source and generating a second air to cool the lead wire as well as the first foil.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: July 6, 2010
    Assignee: Delta Electronics, Inc.
    Inventors: Chia-Jui Lin, Hsiu-Ming Chang
  • Patent number: 7740385
    Abstract: A projector device-of the present invention includes a light blocking mechanism for blocking leak light from a lamp unit. The light blocking mechanism includes a first light blocking member having a plurality of first light blocking plates arranged therein at certain pitches, and a second light blocking member having a plurality of second light blocking plates arranged therein at certain pitches. The first light blocking plates and the second light blocking plates each define a gap providing an air flow passage. A flat inclined part of each second light blocking plate extends in an inverted direction to a flat inclined part of each first light blocking plate, with a predetermined angle of inclination, so that the first light blocking plates and the second light blocking plates block the light emitted from the lamp unit toward a vent of a casing in all orientations.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: June 22, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kazuya Minami, Masaaki Miyamoto