Abstract: A medical lamp has a closed housing having a front side, a rear side and a peripheral side connecting the front side and the rear side. A light source and a reflector are provided in the housing and means are provided to reduce the heat dissipation to the outside from the rear side of the housing.

Abstract: A light emitting display unit includes an electroluminescent display device and a control unit supplying power to, and controlling light emission of, the electroluminescent display device. The control unit includes a controller, a power supply, and conductor. The electroluminescent display device and the control unit may be formed as single, integrated unit, or they may be detachably coupled with each other.

Abstract: A universal ballast mounting bracket is of a generally T-shaped configuration defined by a leg and a pair of oppositely directed arms bent to define an angle therebetween of substantially 90 degrees. A pair of holes are provided in the leg for permanently securing each leg to a flange of a conventional ballast and each arm includes a hole in an end portion thereof for securing the bracket to a wall adjacent a ballast access opening. First and second planes to the respective leg openings and arms openings are normal to each other and relative distances and geometries therebetween are such as to effect universal mounting of the ballast mounting brackets to any one of four corners of the ballast and in any one of two positions relative to the ballast access opening.

Abstract: An umbrella light that can be attached to most common outdoor umbrellas using a pair of opposing semi-circular housings permanently joined by a hinge and a single torsion spring. The spring is biased inward towards the central aperture thereby creating an effective means of attachment. Within the housings are a plurality of LED's, batteries and an optional IC charging monitor. An optional solar panel is attached to the umbrella via an attachment clip. All components are wired in a standard way. The housings each include a centrally located hemispherical cut out area creating a circular aperture to allow for attachment to the support pole of a standard outdoor umbrella, and a self contained flat clip for non-pole use. The floor of the housings has a plurality of apertures that allow light from the enclosed LED's to exit.

Abstract: A light device is disclosed which is arranged to receive at least one rechargeable electrical power storage device. The light device comprises a flexible body portion movable between an expanded configuration and a contracted configuration and defining an enclosure when the body portion is in the expanded configuration, the body portion being at least partially transparent or translucent. The light device also comprises at least one light emitting element which receives electrical power from the or each electrical power storage device disposed during use in the light device, the light emitting element being arranged so as to generate light which passes outwardly of the light device through the body portion, and a solar power converting device arranged to convert solar power to electrical power for recharging the or each electrical power storage device disposed during use in the light devices.

Abstract: A flashlight having a head assembly, a switch assembly and a removable tail cap with a spare bulb holder provided by the tail cap. The spare bulb holder includes a resilient body having an internal, U-shaped wall defining a slot configured to receive a flashlight bulb, a cylindrical wall about the slot and ribs extending between the U-shaped wall and the cylindrical peripheral wall. The slot extends through the cylindrical peripheral wall and includes a first section for receiving the plug of a flashlight bulb, a second section for receiving the flange of a flashlight bulb and a third section for receiving a lens of the flashlight bulb.

Abstract: With this projector, by forming in a lamp casing an aperture, for leading out a wire connected to an electrode terminal of a lamp, near that electrode terminal, and by fitting an insulating member which has an opening portion for leading out this wire, and a lid member which covers this opening portion, to this wire lead out aperture, even though the lamp casing is made from metal, still it is possible to ensure adequate clearances and creepage distances between the electrode terminal and the lamp casing. Furthermore it is possible to prevent light, or air which has been heated up, from leaking out from the wire lead out aperture.

Abstract: Floodlight in a fluid-filled shell (3) with a medially arranged atomiser (7), whereby a light source (8) is permanently installed in a transparent, horizontal ring (9) around the atomiser (7) on a superior level, and an active surface (12) of the atomiser (7) is maintained free, characterized in that the floodlight is mounted centrally on a stand (2) with a shell holder (16), screw-fixed in a sealing manner. the ring (9) extends upwards in an arch above a bulb holder (10) and encloses the above in a sealing manner by means of screwing into the shell holder with seals (15). the atomiser (7) is tensioned in a seal (20) and fixed with a screw ring (18) below the bulb holder (10). a sealed space (14) for cable introduction is thus retained below the atomiser (7) and below the bulb holder (10) in the shell holder (16), the lines of which run through the stand (2).

Abstract: An electrically powered decorative assembly for interior or exterior display. The decorative assembly includes a main electrical string and one or more electrically wired light emitting ornaments electrically and detachably connected to the main string. The decorative assembly may further include one or more light emitting sources electrically connected to the main string. The decorative assembly may be displayed in celebration of religious holidays and secular occasions.

Abstract: To prevent scattering of broken pieces of a reflecting mirror even if a high pressure discharge lamp with a reflector bursts. A light source device according to the present invention is a light source device 10 that has an arc tube 1 and a reflector 2, and a cover glass 4 is externally fitted and fixed to the rear of the reflector 2 at opposite ends thereof with a gap S therebetween. With such a configuration, even if the arc tube bursts to cause a crack in the reflector, the cover glass prevents scattering of the broken pieces of the reflector.

Abstract: A discharge lamp has an electrode comprising a base portion having a base portion side flange portion, and a lid portion having a lid portion side flange portion. In a sealed space of the electrode, heat conductive member is enclosed. At time of lighting, the electrode is not damaged, and the discharge lamp can be stably operated. In the electrode, the diameter direction width of a welding portion of a base portion side flat portion and a lid portion side flat portion is 0.8 to 3.0. Further, an angle formed by the base portion side flat portion and a base side slope portion is 30 degrees or less and an angle formed by the lid portion side flat portion and a lid side slope portion is 30 degrees or less. The sum total of these angle is 160 degrees or less.

Abstract: A light source device includes a discharge tube, a reflector for reflecting a light radiated from the discharge tube, and support members for supporting the discharge tube to the reflector. The support member or the discharge tube is formed of a heat insulating structure so as to prevent a temperature drop of a portion of the discharge tube near electrodes thereof. By this arrangement, it is possible to prolong the operational life of the discharge tube.

Abstract: A photosensor section is disposed in a vicinity of the center of a shorter side of an LED panel including plural arrays of LED units in each of which plural LEDs are arranged. A gain of the photosensor section is adjusted on the basis of gain correction information set in advance according to the position of each LED unit. Thereby, the calibration of the photosensor section is performed. While the photosensor section, which has been adjusted in this manner, sequentially detects the amounts of light from the LED units, a backlight unit emits backlight toward a liquid crystal display panel.

Abstract: One version of a light beacon has a base, a light source, and a controller. The base is suitable for installing the light beacon within a building at a location so as emit light over a coverage area of the building. The light source is movably supported by the base. The controller controls the light source so that the light provided by the light source moves over the coverage area and so that the light provided by the light sources flashes. The light beacon may also have a lock that that determines an extent of movement of the light source.

Abstract: A light emitting diode (LED) based light engine that can replace a conventional PAR type bulb with no modifications to a host lighting fixture is provided. The light engine includes a thermally conductive housing including a generally cylindrical wall defining a cavity, an outer surface of the wall includes a plurality of axially radiating fins and disposed on an inner surface of the wall is an annular center wall dividing the cavity into a first, upper cavity and a second, lower cavity; a light module including at least one LED is disposed in the first, upper cavity and configured to contact the annular center wall, wherein heat generated by the at least one LED is conducted to the housing; and a current driver circuit arranged on a substrate is disposed in the second, lower cavity and electrically coupled to the light module.

Abstract: An LED-based lighting system includes a printed circuit board (“PCB”) having conductors on a front-side thereof, one or more LEDs mounted with the conductors, and a structural element. The PCB is mounted with the conductors near to the structural element so that heat dissipation from the LEDs is primarily through the conductors and the structural element. A method of dissipating heat generated by an LED-based lighting system includes configuring a PCB with conductors on a front-side of the PCB, such that when one or more LEDs mounted to the conductors generates heat, the heat dissipates from the one or more LEDs to the conductors. The method also includes integrating a structural element such that at least portions of the conductors face the structural element, and the heat dissipates from the conductors to the structural element.

Abstract: A lighting device can include at least one LED light source having at least one LED chip, the LED light source being configured to impart a certain directivity to light emitted from the LED chip in a direction of the optical axis of the light source. A first reflector can be disposed in front of the LED light source and upwards with respect to the optical axis. The first reflector can also extend forward and above the optical axis in an inclined manner from a first side to a second side so as to reflect part of light emitted from an upper part of the LED light source with respect to the optical axis. A second reflector can be disposed substantially in parallel to, and below, the first reflector. The second reflector can be configured to reflect light from the first reflector. A third reflector can be disposed in front of the LED light source and downward with respect to the optical axis.

Abstract: An essential oil diffusor assembly is disclosed.

Abstract: A reflector lamp includes a reflector (1), a separate base (2) and an electric lamp (3), which is held in the reflector (1) and/or the base (2) by a holding device (5), the reflector (1) and the base (2) in the assembled state of the reflector lamp (I) forming a connection region (6), in which they are arranged such that they engage one inside the other, at least in regions, and are assembled without the use of an adhesive.

Abstract: A method and device for replacing a fluorescent tube lamp with an LED lamp. The LED lamp includes an elongated electrical assembly having ends terminating in first and second electrical connectors, and a plurality of LEDs mounted to the elongated electrical assembly. Mounting adaptors connect with the first and second electrical connectors, and have protruding pins to connect with conventional lamp socket connectors. The mounting adaptors have rotating connectors for connecting with the first and second electrical connectors of the LED lamp, so that the LED lamp orientation can be rotated after the LED lamp is fully mounted to the lamp socket connectors.

Abstract: A stone craft product and a method for manufacturing the stone craft product. The stone craft product includes a hollow mainbody, the hollow mainbody includes a plurality of light-transmitting stone pieces, the plurality of light-transmitting stone pieces is adhibited to each other; and a light source is accommodated in the hollow mainbody. The method for manufacturing a stone craft product includes steps of: cutting light-transmitting stone materials into a plurality of stone pieces; adhibiting the plurality of stone pieces to be a hollow mainbody by using an adhesive; and putting a light source into the hollow mainbody after the hollow mainbody becomes concreted. The method in accordance with the present invention is simplified, convenient and save stone materials, and the stone craft product manufactured by the method has enhanced aesthetic value and practicality.

Abstract: A lamp includes a base, a light source, three or more articulated links, a first of which extends from the base and a last of which is pivotally secured to the light source. The links are reconfigurable between a floor lamp configuration in which the links are co-linear and the light source and base are maximally displaced from one another, and a desk/table lamp configuration in which the light source rests upon the base.

Abstract: An external rearview mirror assembly is designed for a motor vehicle. The external rearview mirror assembly includes a mirror housing. A mirror glass carrier is operatively connected to the mirror housing. A piece of mirror glass is fixedly secured to the mirror glass carrier and is movable with respect to the mirror housing. The mirror glass defines a peripheral edge. An attaching part is fixedly secured to the mirror glass carrier wherein the attachment part extends about a portion of the peripheral edge.

Abstract: A vehicle lighting control system is disclosed that includes a weather detecting device for detecting a weather condition and a degree thereof. The lighting control system also includes a control device for controlling the light emitting apparatus based on the weather condition and the degree of the weather condition.

Abstract: An animated novelty device for mounting on a ball of a trailer hitch on a vehicle, the device including an electric motor for imparting motion to selected elements of the device. The motor is electrically connected to the vehicle braking system whereby the device is set in motion by energizing the vehicle brakes.

Abstract: A light bar is described that is of a modular construction based on one or more large circuit boards that are populated with light beam assemblies and then fastened to an interior space of the light bar housing. Keys that automatically align the light beam assemblies on each of the boards precisely control placement of the assemblies on the board. In turn, each of the boards is keyed to the interior of the light bar housing so that when the board is fastened to the housing the light beam assemblies are automatically registered into alignment with the lenses in the housing so that the beams from the assemblies are properly oriented. The light bar is inexpensive to fabricate and can be assembled quickly and reliably, yet it provides for a high degree of customization, which is a requirement in the emergency vehicle lighting industry.

Abstract: The present invention is directed to a light guide whose one or both sides are structured, a method and an apparatus for manufacturing the same. The present invention is also directed to an illuminating system using the light guide whose one or both sides are structured. The illuminating system comprises a light source part including a light source generating a light and an optical guide optically connected with the light source part for emitting a light inputted from the light source part to outside. The optical guide comprises a hollow outer pipe and a hollow inserted body inserted into the outer pipe, wherein its one side is extended in a substantially same direction as a longitudinal direction to the optical guide, and it is structured with a plurality of linear structures arranged side by side.

Abstract: An edge-type backlight unit having a plurality of rows of red, blue and green LEDs to provide a light source. In the backlight unit, a light guide plate has a light incidence part formed on a side surface thereof to receive light, the light guide plate inducing the light from the light incidence part to be emitted through a top surface of the light guide plate. A light source is disposed near the light incidence part of the light guide plate, and includes a plurality of red, green and blue light emitting diodes along the light incidence part. The light emitting diodes are grouped into at least three rows according to color. Here, the row of the green light emitting diodes is arranged most adjacent to the top surface of the light guide plate.

Abstract: A diffusing board which can suppress moiré fringes, color flickering and screen brightness deterioration on a screen of a liquid crystal display device. On the surface of a transparent board (83), a pattern wherein substantially rectangular shapes are arranged in lattice by using a synthesized pattern (86) is formed. The synthesized pattern (86) is provided by synthesizing a plurality of first uneven patterns (84) having a linear shape which is long in one direction, and a plurality of concave lens shaped second uneven patterns (85) arranged at random.

Abstract: A planar light source unit includes a metal frame retaining a light source panel provided with an light guide for inducing emission of light from a light source and a plastic frame that supports at least part of a peripheral edge of the light guide. The outer peripheral surface of the plastic frame with a fitting structure between the metal frame and the plastic frame and an outer frame portion contiguous to the support plate portion and sandwiched between the fixing means and the outer frame portion of the metal frame. A liquid crystal display panel is provided with a display region in which plural display pixels are arrayed and the planar light source unit.

Abstract: In an LCD backlight unit using a light emitting diode, a double-sided printed circuit board includes a plurality of divided areas and conductive vias. A plurality of light emitting diodes are disposed on a top surface of the double-sided printed circuit board. A plurality of driving circuit connectors are disposed at a portion of the double-sided printed circuit board. A plurality of first lead patterns are formed on the top surface of the printed circuit board, each of the first lead patterns electrically connecting the light emitting diodes in each of the divided areas with one another. Also, a plurality of second lead patterns are formed on an underside surface of the double-sided printed circuit board to electrically connect the first lead patterns with the connectors through the conductive vias.

Abstract: An optical sheet has a large number of cylindrical lens elements provided successively on one of principal faces thereof. The cylindrical lens elements have a finite focal distance on the emission side of illumination light and have an aspheric face of a leftwardly and rightwardly symmetric sectional shape. Where a Z axis is taken in parallel to a normal line direction to the optical sheet and an X axis is taken in a direction of the row of the cylindrical lens elements, a cross sectional shape of the cylindrical lens elements satisfies Z=X2/(R+?{square root over ( )}(R2?(1+K)X2))+AX4+BX5+CX6+ . . . (where R is the radius of curvature of a distal end vertex, K is a conic constant, and A, B, C, . . . are aspheric coefficients).

Abstract: An optical sheet, a backlight device, and a liquid crystal display device are provided. The beam-condensing optical sheet includes a large number of irregularity portions arranged on one main surface of a light-transmissive base, in which a pitch of arrangement of the irregularity portions is 110 ?m or more and 330 ?m or less, and surface roughness (Ra) of the irregularity portion is 0.1 ?m or less.

Abstract: A light source device includes a discharge tube, a reflector for reflecting a light radiated from the discharge tube, and support members for supporting the discharge tube to the reflector. The support member or the discharge tube is formed of a heat insulating structure so as to prevent a temperature drop of a portion of the discharge tube near electrodes thereof. By this arrangement, it is possible to prolong the operational life of the discharge tube.

Abstract: A light source device includes a discharge tube, a reflector for reflecting a light radiated from the discharge tube, and support members for supporting the discharge tube to the reflector. The support member or the discharge tube is formed of a heat insulating structure so as to prevent a temperature drop of a portion of the discharge tube near electrodes thereof. By this arrangement, it is possible to prolong the operational life of the discharge tube.

Abstract: A light source device includes a discharge tube, a reflector for reflecting a light radiated from the discharge tube, and support members for supporting the discharge tube to the reflector. The support member or the discharge tube is formed of a heat insulating structure so as to prevent a temperature drop of a portion of the discharge tube near electrodes thereof. By this arrangement, it is possible to prolong the operational life of the discharge tube.

Abstract: A light source device includes a discharge tube, a reflector for reflecting a light radiated from the discharge tube, and support members for supporting the discharge tube to the reflector. The support member or the discharge tube is formed of a heat insulating structure so as to prevent a temperature drop of a portion of the discharge tube near electrodes thereof. By this arrangement, it is possible to prolong the operational life of the discharge tube.

Abstract: A light source device includes a discharge tube, a reflector for reflecting a light radiated from the discharge tube, and support members for supporting the discharge tube to the reflector. The support member or the discharge tube is formed of a heat insulating structure so as to prevent a temperature drop of a portion of the discharge tube near electrodes thereof. By this arrangement, it is possible to prolong the operational life of the discharge tube.

Abstract: The Multiple function LED night light has at least one of LED device incorporated with the added function(s) may selected from air-freshener (as co-pending filing Ser. No. 11/527,631, Ser. No. 11/527,629, Ser. No. 11/498,881, Ser. No. 11/498,874, Ser. No. 11/527,628 etc), adaptor device, sonic device, frequency device, sensor device, bug repeller device, 2nd light device, time piece, electric message device, timer device, temperature device, surge protection device, electric shortage device, base device for install on existing lamp socket, emergency light device, or any other electric device(s) which fit for home to keep people comfortable or safety related device.

Abstract: A rectification switch control switch element (Q7) is provided between a gate and a source of a rectification switch element (Q2). The rectification switch control switch element (Q7) is turned ON in response to a signal on a secondary side of a pulse transformer (T2) at a turn OFF timing of a main switch element (Q1) to forcedly turn OFF the rectification switch element (Q2). As a result, the rectification switch element (Q2) can be turned OFF in synchronism with an OFF of the main switch element at a time of a backflow. With use of a free resonance between a capacitance between a gate and a source of the rectification switch element (Q2) and a commutation switch element (Q3) and a choke coil (L2), an excitation state of the choke coil (L2) can be reset. Then, it is possible to stabilize a detection voltage of a tertiary rectification smoothing circuit (22) which uses a tertiary winding (N13) of a transformer (T1), thus stabilizing control of the circuit functions.

Abstract: A DC converter comprises a half bridge supply circuit and one or more flyback or forward converter output circuits, and optionally also an LLC converter whose control can determine a common variable switching frequency. The half bridge supply circuit produces a 50% duty output alternating between two input voltages, such as zero and a voltage Vin. In each flyback or forward converter output circuit, a switch connects a transformer primary to the half bridge supply circuit output in a PWM controlled manner to regulate a respective flyback or forward converter DC output which is produced by the converter output circuit, with a duty ratio less than 50% whereby switching losses are reduced. Soft switching is further facilitated by the half bridge supply circuit having two transistors controlled in a complementary manner.

Abstract: Techniques are disclosed to regulate an output of a power converter. One example power converter controller circuit includes a line sense input to be coupled to receive a signal representative of an input voltage of a power converter. A feedback input is included and is to be coupled to receive a feedback signal representative of an output of the power converter. A drive signal generator is included and is to generate a drive signal coupled to control switching of a switch to provide a regulated output parameter at the output of the power converter in response to the feedback signal. The drive signal generator is to latch the power converter into an off state in response to a detection of a loss of regulation of a power converter output parameter if the input voltage of the power converter is above a threshold level. The drive signal generator is to be unresponsive to the signal representative of the input voltage of the power converter while the power converter output parameter is in regulation.

Abstract: A method of designing a random pulse width modulation (RPWM) inverter with unwanted harmonic elimination, which first uses a Fourier analysis and a numerical analysis to eliminate the unwanted harmonic components, next uses the equal area approach to produce switching angles to be used as start values for solving non-linear equations, next selects low-order harmonics to be eliminated and randomly sampled harmonics to solve the equations and obtain pluralities of switching angles for eliminating different harmonics, next applies pluralities of harmonics to a random probability function to thereby obtain a harmonic distribution, and finally uses a random sampling to evenly disperse the higher side-band harmonic components and effectively suppress the low-order harmonic components.

Abstract: A device that includes an active rectifier (14) having control gates controllable to produce an output voltage on a DC bus (20), a gate control circuit (16) for producing gate control signals for controlling the active rectifier control gates, a first circuit (18) connected to the gate control circuit (16) and producing a command current magnitude signal and a power factor signal for use by the gate control circuit (16), a current line (30) providing a current related to the DC load current to the first circuit (16), and a voltage line (32) providing a voltage related to the DC bus voltage to the first circuit (16), the first circuit (16) including a peak detector (64) detecting current peaks on the DC bus (20), a command current magnitude signal generator (34) commanding a current as a function of the detected peaks, and a power factor controller (33, 40) varying the power factor signal (42) to control the voltage on the DC bus (20).

Abstract: A process is disclosed for determining the charging state of a diode rectifier (4) of a frequency converter (2) connected to a supply grid (18). According to the invention, a rectifier current (iZKnetz) is determined on the basis of a measured intermediate circuit voltage (UZK) and of measured motor currents (i1, i2, i3), and the rectifier current (iZKnetz) is compared with a predetermined threshold value, any upper deviations are stored and the frequency of the deviations within a predetermined time period, which represents a measure of the charging state, is determined. This permits a frequency converter (2), which is connected to a supply grid (18) and has a diode converter (4) on the side of the grid, to determine without difficulty the charging state of its diode rectifier (4) after temporary grid voltage breakdowns, so that the diodes of the diode rectifier (4) need no longer be oversized.

Abstract: A pulse generator circuit comprises a DC power supply (power supply voltage=V); a transformer series connected across the DC power supply; and a single switch; wherein an output is derived from the two ends of a secondary winding of the transformer. While the switch is on-state, a pulse of negative polarity is outputted from the two ends of the secondary winding. When the switch is turned off, a discharging to a resistive load is commenced and an induced electromotive force occurring in the transformer causes the output voltage to abruptly rise, thereby outputting a pulse of positive polarity.

Abstract: A Content Addressable Memory (CAM) device with an improved match sensing circuit is provided. The CAM is provided with a dummy cell and a respective dummy match line, as well as a reference dummy match line. The dummy match line is designed to be evaluated after all other cell match lines. The reference dummy match line triggers a dummy sensing block to initiate a time window for sensing the dummy match line. By this time, all other array match lines will have been stabilised and have reached their respective sensing blocks, to then allow the data to be latched. The match sensing circuit provided may be applied to a variety of arrangements including BCAMs and TCAMs.

Abstract: Methods and apparatus for providing an array of passive nonlinear elements having an interface circuit that isolates the array from loading effects from external connections to the array. In one embodiment, a capacitive switching circuit is used to electrically isolate the elements in the array from the external load.

Abstract: A programmable read-only memory comprises a memory cell or a plurality of such cells arranged as an array. Each memory cell comprises a transistor, such as a MOS TFT. An electronic switch allows the control electrode, such as the gate, to be substantially electrically isolated during a programming mode so that the gate is electrically floating during this mode. During the programming mode, a programming voltage is supplied across the main conductive path of the transistor, such as across the source-drain channel. The programming voltage is sufficiently large to fuse the main conduction path when the control electrode of the transistor is floating but is insufficient to fuse the main conduction path when the control electrode is not floating and is connected to a suitable defined voltage.

Abstract: A memory arrangement includes: a first line for applying a reference voltage, a second line for applying an operating voltage, and a plurality of resistive memory elements, each element includes a resistive memory cell and a MOS memory cell selection transistor. A NOR memory arrangement is configured with each memory element including the resistive memory cell and selection transistor connected in series with the transistor connected to the first line, and the memory cell connected to the second line. A NAND memory arrangement is configured with a series of resistive memory elements forming a chain with each memory element including the resistive memory cell and selection transistor connected in parallel. The chain is connected to the first line disposed on a side of the memory cells facing the selection transistors and the second line disposed on a side of the memory cells which is remote from the selection transistors.