Patent application number | Description | Published |
20090038787 | COOLING SYSTEM FOR PROJECTION DEVICE - A cooling system for cooling down a heat source of a projection device is disclosed. The cooling system includes a fan, and a control module. The control module is configured for supplying a first voltage to the fan for a first duration after the projection device is powered off and a second voltage to the fan for a second duration successive to the first duration. The second voltage is greater than the first voltage. | 02-12-2009 |
20090051885 | LIGHT SHIELD USED IN PROJECTOR - A projector includes a casing, a light source, and a heat dissipation device. The light source and the heat dissipation device are installed inside the casing. Two openings are formed at two sides of the casing opposing to the light source. A light shield is positioned on one of the two openings. The light shield has a fixing plate, and a plurality of first parallel light-shielding plates and a plurality of second parallel light-shielding plates for blocking light leaking from the openings. | 02-26-2009 |
20090073592 | COLOR WHEEL - A color wheel includes a motor defining a rotating portion, a color filter, a sensor and a processor electrically connected to the sensor. The rotating portion defines a groove at the periphery of the rotating portion to aid the sensor in detecting a color index position of the color filter during transmission of light beams to the rotating portion from the sensor. When portions of light beams are striken the groove of the rotating portion, they are substantially absorbed by the groove and cannot be reflected back to the sensor, thereby the sensor can accurately detect the color index position of the color filter during the rotation of the color filter. | 03-19-2009 |
20090079947 | LIGHT SOURCE ASSEMBLY AND PROJECTOR HAVING SAME - A projector includes a lamp for providing a light beam, a reflective case for receiving and fixing the lamp, a cover, an image engine, and a projecting lens. The reflective case has an opening for allowing the light beam to be emitted therefrom. The cover includes a transparent portion covering the opening of the reflective case and a sidewall connected to the transparent portion. The sidewall is connected to the reflective case via screw threads. The image engine is positioned to receive light output from the lamp and configured for superimposing spatial information on the light to form image. The projecting lens is configured for receiving the light output of the image engine. | 03-26-2009 |
20090080057 | COLOR WHEEL - A color wheel for use in a DLP projector includes a rotating disk, a color filter, a sensor, and a processor. The rotating disk has two end surfaces, a circumferential side surface extending between the two end surfaces, and a timing mark arranged on the side surface thereof. The color filter is mounted on an end surface of the rotating disk for jointly rotating with the rotating disk. The sensor faces toward the side surface of the rotating disk and is configured for determine a position of the timing mark relative to the color filter. The sensor has a casing defining a light inlet for receiving light reflected from the rotating portion. A shield is disposed around the light inlet of the sensor for preventing stray light coming into the sensor. The processor is electrically connected to the sensor for regarding the color index position of the color filter. | 03-26-2009 |
20090096998 | PROJECTOR WITH ILLUMINATED LOGO REGION - A projector equipped with an illuminated logo region includes a light source including a reflector defining an opening and a light-emitting portion contained by the reflector, a light-modulating device, a lens, a housing, and a logo region. The light-emitting portion emits light radially. Part of the light is emitted directly through the opening of the reflector and/or is reflected by the reflector through the opening to be received by the light-modulating device to be modulated to produce a projecting light before being received by the lens and then projected to form an image on a surface. Another part of the light is transmitted through the reflector to illuminate the logo region. The housing is configured for housing the light source, the light-modulating device, and the lens. The logo region is inlaid in a portion of the housing corresponding to the reflector, to be illuminated by the another part of light. | 04-16-2009 |
20090097253 | LIGHT SOURCE DEVICE - A light source device includes a lampshade, a lamp, a cover, a first electrical wire, a second electrical wire, and a metallic clamping element. The lampshade includes an outer sidewall surface, an inner sidewall surface, and a light exit. An electrical connector is located on the outer sidewall surface of the lampshade. The lamp is contained in the lampshade. The cover covers the light exit. One end of the first electrical wire is electrically connected to the electrical connector and another end is connected to the metallic clamping element. One end of the second electrical wire is electrically connected to the lamp and another end is connected to the metallic clamping element, thereby electrically connecting the first electrical wire to the second electrical wire. | 04-16-2009 |
20090102388 | PROJECTOR AND LIGHT SOURCE ASSEMBLY EMPLOYED IN SAME - A light source assembly employed in a projector includes a light source, a power device, a light energy storage device, and a selection switch. The light source is configured for providing light beams for the projector. The selection switch is electrically connected to the light source, the light energy storage device and the power device and is configured for selecting one of the light energy storage device and the power device to provide power for the light source. The light energy storage device can absorb heat from the light source and convert the heat into electricity. Therefore, energy is saved and heat produced by the light source is reduced via the light energy storage device compared to the conventional light source assembly. | 04-23-2009 |
20090103056 | PROJECTOR WITH A LENS COVER - A projector includes a light source, a light modulator for modulating light emitted from the light source, a lens module projecting the modulated light to form an image on a surface, and a lens cover. The lens cover includes a base portion positioned to the lens module, and a pattern defined in the base portion. When the projector is in operation and the lens cover is mounted on the lens module, an image is projected on the surface corresponding to the pattern. | 04-23-2009 |
20090103309 | SAFE LIGHT EMITTING DEVICE - A safe light emitting device includes a reflective housing with an open end, a support coupled to the reflective housing, a holder, and a lamp. The holder is positioned on the support and is remote from the open end of the reflective housing. The lamp includes a bulb and a connector connecting the bulb to the holder. The bulb defines a concavity in an outer surface thereof. | 04-23-2009 |
20090109406 | PROJECTOR - A projector includes a lamp, a fan for dissipating heat generated by the lamp, a housing, a number of blades received in the housing, and a elongated-slider. The housing receives the lamp and the fan, and includes a top cover, a sidewall connected to the top cover, and a bottom cover connected to the sidewall. The top cover defines an through opening therein. The blades can be rotated in cooperation with the slide of the elongated-slider in the through opening. As described above, the projector can exhaust thermal formed by the lamp or electronic elements from the air outlet. At the same time, the flow direction of the air from the air outlet can be changed in cooperation with the slider. Therefore, when a user sits by the air outlet, the user can adjust the flow direction of the air from the air outlet at any time. | 04-30-2009 |
20090323362 | SHIELD SYSTEM FOR LAMP MODULE - A shield system for a lamp module in an electronic device is disclosed. The shield system includes a cover, a mesh sheet and a blocking board. The cover includes an air channel and covers the lamp module. The mesh sheet is attached to the cover and covers the air channel. The blocking board is arranged adjacent to the air channel of the cover and includes a plurality of blades and defines a plurality of air passages. | 12-31-2009 |
20100033973 | LIGHT SOURCE SYSTEM - A light source system includes a light source, a reflective device and a protecting device. The light source received in the reflective device. The reflective device including a light outlet and a through hole defined thereon is configured for reflecting light emitted from the light source to the light outlet. The protecting device is mounted on the outside of the reflective device with a space left between the protecting device and the outer surface of the reflective device. The protecting device includes a first portion substantially aligned with the through hole of the reflective device and a second portion. The first portion is configured for preventing light from leaking and objects from escaping out from light system. The second portion defines at least one ventilation hole thereon. | 02-11-2010 |
20100033976 | HEAT DISSIPATION MODULE FOR LIGHT EMITTING DIODE - A dissipation module for a light emitting diode includes a substrate, a printed circuit board, and a heat sink. The substrate has electrode sheets on which the light emitting diode is electrically mounted. The printed circuit board includes an upper surface and a bottom surface. The printed circuit board defines plated through holes passing from the upper surface to the bottom surface, and mounts on the substrate with the bottom surface in contact with the upper surface. The heat sink connects to the bottom surface of the printed circuit board through a conductive layer. | 02-11-2010 |
20100039817 | LED MODULE AND LIGHT MODULATOR WITH THE SAME - A light emitting diode (LED) module includes a driving circuit board, at least one LED, a thermal dispersing sheet and a heat sink. The driving circuit board includes a front surface and an opposite back surface. The at least one LED is mounted on the front surface of the driving circuit board and electrically connected to it. The thermal dispersing sheet is attached on the back surface. The heat sink is mounted on the driving circuit board in contacting the thermal dispersing sheet. | 02-18-2010 |
20100039823 | LIGHT SOURCE DEVICE AND PROJECTION DEVICE UTILIZING THE SAME - A light source device for a projection device includes a lamp and a reflector. The lamp includes a light emitter and two electrode arms. The light emitter emits light, and the two electrode arms include reflective coatings, and are integrally formed with the light emitter. The reflector retains the lamp and includes a curved reflective inner surface in a parabolic shape. | 02-18-2010 |
20100044017 | EXHAUST FAN - An exhaust fan includes a fan frame, a fan, and a shielding plate. The fan frame defines a hollow shell, the hollow shell defines an air flow passage with an air inlet and an air outlet. The fan is received in the hollow shell, the fan includes a hub and a plurality of fan blades extending outward in a radial direction from circumference of the hub. The shielding plate is disposed at the air inlet side of the hub and covers an end surface of the hub facing the air inlet side. The shielding plate is separated from the hub. | 02-25-2010 |
20100066982 | SMALL-SIZED PROJECTOR WITH HIGH HEAT-DISSIPATING EFFICIENCY - The projector includes a housing, a projection lens, an optical engine, a light source module and a heat-dissipating module. The housing includes a bottom wall and a front wall, a rear wall, a first sidewall and a second sidewall. The front wall defines a lens hole and a plurality of first vents, the rear wall and the two sidewalls defines at least one second vent. The projection lens is received in the housing with the magnification end thereof arranged adjacent to the lens hole. The light source module includes a light source and a driving circuit board, the light source is received in the housing, the optical engine optically coupling the light source module and the projection lens. The heat-dissipating module comprising a heat sink disposed on the light source and a fan facing to the heat sink. | 03-18-2010 |
20130120716 | HEAT DISSIPATION DEVICE OF LIGHT ENGINE - A heat dissipation device of a light engine for a projector has a housing, a fan module, a light engine and a heat sink. The light engine is positioned in the housing and connected to the heat sink. The heat sink is positioned out of the housing. The housing has a fan-enclosed flow channel attached on an outer surface of the housing. The fan module is guided by the fan-enclosed flow channel to the heat sink to enhance heat dissipation efficiency of the light engine for the projector. | 05-16-2013 |
20130128237 | DUST-PROOF STRUCTURE OF PROJECTOR - A dust-proof structure of a projector includes a color wheel module, an air diversion panel, and a circuit board. The color wheel module has a motor and a color wheel. The motor drives the color wheel by an axle to rotate. The air diversion panel is located on the circuit and positioned under the motor. The air diversion panel has an opening, a dust exit, and a dust collecting trough. The opening is positioned between the dust exit and the dust collecting trough. The circuit board has a sensor, which is placed in the opening of the air diversion panel. The dust exit and the dust collection trough of the air diversion panel prevent the sensor from dust aggregation. | 05-23-2013 |
20130145870 | ROTATION ADJUSTING MECHANISM AND ADJUSTING MACHINE USING THE SAME - A rotation adjusting mechanism includes a first pedestal, a first sliding block and a first adjusting member. The first pedestal defines a first sliding surface, and an adjusting hole at the side, and an elongated hole on the first sliding surface, the elongated hole communicates with the adjusting hole. The first sliding block defines a second sliding surface and includes an engaging portion on the second sliding surface, the second sliding surface moves on the first sliding surface. The first adjusting member is partially received in the adjusting hole, a portion of the first adjusting member is partially exposed out of the elongated hole and engages with the engaging portion, the adjusting member is turned by hand to rotate to enable the first sliding block to slide along the first sliding surface. The embodiment further discloses an adjusting machine using the same. | 06-13-2013 |
20130169938 | COLOR WHEEL WITH FAN BLADE - A color wheel unit of a projector includes a motor and a color wheel. The color wheel is synchronized with the rotating motion of the motor. The color wheel has a light-irradiated area and a non-irradiated area. The light-irradiated area is positioned in an outer margin of the color wheel and at least a phosphor layer is located on the light-irradiated area. The non-irradiated area is positioned at the inner portion of the color chip. A number of fan blades are located in the non-irradiated area. The fan blades are synchronized with the rotating motion of the color wheel that generates air flow to enhance heat dissipation efficiency of the color wheel. | 07-04-2013 |