Abstract: The present invention relates to a refrigerator (1) having one or more movable member (6) which are contactlessly powered for activating a power consuming device (14). The refrigerator (1) according to the invention comprises a cabinet 92) provided with a primary electrical circuit (7) connected to a main alternate voltage power supply and comprises a movable member (6) associable to said cabinet (2) provided with a secondary electrical circuit (11). The refrigerator (1) is characterized in that said secondary circuit (11) is powered contactlessly by said primary circuit (7) and supplies electrical energy to a power consuming device (14).

Abstract: In a cabinet, an inverter housing is mounted on an inverter housing mounting surface. Heat-exchanger-side pipe connection ports are disposed so as to extend through the inverter housing mounting surface toward a heat exchanger for use as an air-cooling device. Further, controller-mounting-side pipe connection ports are disposed so as to extend on a controller mounting side. A refrigerant supply line is a refrigerant passage through which a refrigerant is cyclically fed from the refrigerant cooling device. One end of the refrigerant supply line is connected to the heat-exchanger-side pipe connection ports or the controller-mounting-side pipe connection ports, while the other end is connected to the refrigerant cooling device that penetrates an appropriate part of a wall of the cabinet and is situated in a proper position outside the cabinet.

Abstract: An in-wall mounted tool box has a rectangular base having two opposing side panels, opposing top and bottom panels, and a back panel that form a storage cavity. Flanges are coupled to edges on the side panels of the rectangular base for mounting the rectangular base to vertical members forming a wall thickness. The back panel of the tool box has a number of tool hangers attached wherein tools may be stored. The in-wall tool box is configured to mount between two studs of an interior wall. A portion of the wall covering is removed exposing the stud surface over a length corresponding to the height of the in-wall tool box. The flanges are coupled to the stud walls with fasteners and tool box extends into the volume between two studs. The flanges may have pre-drilled clearance holes to facilitate mounting of the tool box to the wall studs.

Abstract: A collapsible sand blasting cabinet comprising a folding frame (10), the folding frame comprising a base (1000), a plurality of legs (1110) pivotally mounted to the base, a front frame (1200) pivotally mounted above the front of the base, a rear frame (1300) pivotally mounted above the rear of the base, a flexible enclosure (20) attached to the said folding frame in a way which allows internal access through the front frame, a perforated floor (3160) attached to the said base sandwiching the enclosure, and, a removable door adapted to seal said flexible enclosure at the front frame. The plurality of legs may comprise of two sets of legs that are hingedly mounted to the base. The front frame may comprise of a top section (1200b) and a bottom section (1200a), the top and bottom sections meeting at an angle of between 90 degrees and 180 degrees. The rear frame may comprise of an upper (1320) and a lower (1310) section, the sections being hingedly joined.

Abstract: A method and device for opening and closing a door of a drawer-type cooking device, enabling to reduce an operation force by at least causing a drive mechanism not to put a load during an initial period when the door is opened or closed is provided. When a drawer body 2 is driven by a drive mechanism 30 including an electric motor 31 to reach a stroke end such as a fully closed (opened) position, the drive mechanism 30 is reversely driven only for a distance corresponding to a backlash existing in a transmission mechanism 32 (between a pinion 34 and a rack 35) and is stopped. When the drawer body 2 is then manually operated in the direction away from the stroke end, the drawer body 2 can be moved without driving the drive mechanism 30 against the inertia or load only for the distance corresponding to the backlash. As a result, the drawer body can start to be manually moved with a light burden.

Abstract: A corner fitting for securing a drawer side to a drawer rear panel in a drawer assembly. The fitting comprises a substantially L-shaped bracket having a first flange and a second flange. A hollow support structure connects the first and second flanges and provides internal support surfaces for engagement by a component of the drawer assembly. A slot is defined by a gap between opposing surfaces of one of the flanges and one of the support surfaces. The support structure includes a resilient locking flap biased so as to protrude into the slot to lock the component of the drawer assembly and a tab extending from the flap into the hollow support structure with the tab accessible externally of the drawer assembly to permit retraction of the flap from the slot.

Abstract: A slide rail assembly includes an outer slide rail having a protrusion, an intermediate slide rail having a slot, an inner slide rail having a stop portion, a latch member slidably attached to the slot of the intermediate slide rail, and a resilient member connected to the latch member for returning the latch member to an original position. The latch member includes a first engaging portion and a second engaging portion located at opposite sides of the intermediate slide rail. The stop portion engages with the first engaging portion of the latch member such that the inner slide rail is capable of driving the intermediate slide rail to simultaneously slide out from the outer slide rail. The protrusion engages with the second engaging portion of the latch member to bias the latch member to slide along the slot to release the stop portion from the first engaging portion.

Abstract: This utility model relates to a type of position limiting mechanism preventing slipping out of drawers, consisting of arresting pin, keyway, self-plugging rivet, compression spring and control handle arranged in strip shaped drawer handle plate groove, and position-limiting pinch plate on box side board corresponding to keyway position. The arresting pin is strip shaped and consists of round pin rod and pin flap with shoulder. On the round pin rod, compression spring is fitted and on its tail end, control handle is fixed. The keyway is strip shaped with a round hole in the middle; at one outer side of its front end, an installation buckle with position-limiting buckle groove is provided, and on side face near the tail of the same side, fixed installation seat with internal assembling hole is provided. For operation, when the drawer is pushed inward, the pin flap will be automatically clamped.

Abstract: Refrigerator is provided. The refrigerator can prevent torsion of a rail member guiding withdrawal of a storage box to stably withdraw the storage box. The refrigerator includes a body, a movable storage box, a rail member, and a supporting member. The body includes a storing compartment. The movable storage box is provided inside the body. The rail member is provided in at least one side of the storage box and guides a movement of the storage box. The supporting member is disposed between the rail member and the body and allows the rail member to be tiltably supported with respect to the body. Therefore, the usability of the refrigerator is improved.

Abstract: The present invention relates to a lamp assembly comprising a lamp (10) having a lamp vessel (101) with a longitudinal axis (CC). The lamp assembly comprises a support member (11) comprising a bottom surface (111) extending substantially along the longitudinal axis. Between the bottom surface and the lamp vessel, a reflective member (12) is supported by the support member and has a surface comprising a material with a melting temperature higher than 600° C.

Abstract: An electronic device including a pair of electrodes disposed on a substrate and carbon nanotubes electrically connecting the electrodes. A method for manufacturing this device in which the electrodes are disposed on the substrate and the nanotubes are prepared to electrically connect the electrodes.

Abstract: A method of manufacturing a fine structure capable of accurately controlling formation positions of tubular structures made of carbon or the like is provided. Column-shaped protrusions (11) are formed on a substrate (10). Next, a catalyst material (20) such as iron (Fe) is adhered to the substrate (10). Subsequently, by providing the substrate (10) with heat treatment, the catalyst material (20) is melted and agglomerated on the side faces (11A) of the protrusions (11), and thereby cyclic catalyst patterns made of the catalyst material (20) are formed on the side faces (11A) of the protrusions (11). After that, tubular structures (30) in a state of tube are grown by using the catalyst patterns. The tubular structures (30) become carbon (nano) pipes, which are raised from the side faces (11A) of the protrusions (11) and whose ends (30A) are opened. The tubular structures (30) can be formed correspondingly to the positions of the protrusions (11) accurately.

Abstract: An electron emitting element having a cap portion 103 with a closed structure and a columnar axis portion 101a comprising a tubular material composed mostly of carbon and a conductive base material for immobilizing the tubular material, characterized in that; the cap portion 103 includes a plurality of five-membered ring structures 104 made by atoms which constitute the tubular material and the distance between the five-membered ring structures 104 is 30 nm or more.

Abstract: There is disclosed an FED (field emission display) capable of supplying an anode voltage, which is a high voltage, to an anode substrate with high reliability. A high voltage introduction button is sealed to a sealing plate, in which a contact spring is attached to the high voltage introduction button by spot welding. The high voltage introduction button has a flat portion connected to the contact spring, a sealing portion sealed to the glass substrate, and an external terminal to be connected to an external power source. The contact spring contacts an anode terminal of an anode substrate with an appropriate contact pressure, by a spring force from an arm portion of the contact spring. The anode terminal is formed of a conductive film containing metal particles.

Abstract: Provided are a phosphor paste composition, a flat display device including the same, and a method of manufacturing the flat display device. The phosphor paste composition contains a phosphor with at least a heat-resistant material selected from a Group II atom-containing material, a Group III atom-containing material, and a Group IV atom-containing material, a binder, and an organic solvent. By using the phosphor paste composition, the deterioration of the phosphor can be prevented during a heat treating process. The flat display device includes a phosphor layer containing the phosphor coated with the heat-resistant material such that lifetime of the flat display device is increased and a permanent residual image phenomenon, the adsorption of water by the phosphor, and the like can be prevented.

Abstract: A display device comprising at least one phosphor layer, the phosphor layer containing a green phosphor represented by the following formula: (A1-xBx) (Zn1-yMny) Al10O17 wherein, A is an element selected from Ca, Ba and Sr, B is a rare-earth element, x is a number satisfying 0.0001?x?0.1, and y is a number satisfying 0.02?y?0.14.

Abstract: Aryl-substituted conjugated polymers are described having improved properties. The polymers include a polymer backbone that includes heterocyclic repeat units. At least some of the heterocyclic repeat units have an aryl substituent attached thereto and at least some of these aryl substituents have a branched alkyl substituent attached thereto. The conjugated polymer are well-suited for use in a variety of electronic devices, including photovoltaic cells, light-emitting diodes, and transistors. Tunability of material, spectroscopic, and/or electronic properties is possible.

Abstract: Provided is a white light emitting diode (LED) including a blue LED chip; and yellow, green, and red light emitting phosphors that are coated on the blue LED chip at a predetermined mixing ratio and converts light, emitted from the blue LED chip, into white light.

Abstract: An organic light-emitting device comprising an anode; a cathode; a hole-transporting layer disposed between the anode and the cathode; a phosphorescent light-emitting layer disposed between the hole-transporting layer and the cathode, wherein the phosphorescent light-emitting layer includes at least one host and at least one phosphorescent dopant; a first exciton-blocking layer disposed between the hole-transporting layer and the phosphorescent light-emitting layer; wherein the first exciton-blocking layer has a triplet energy greater than the triplet energy of the host in the phosphorescent light-emitting layer; and a second exciton-blocking layer disposed between the first exciton-blocking layer and the phosphorescent light-emitting layer, wherein the second exciton-blocking layer is in contact with the phosphorescent light-emitting layer, and wherein the second exciton-blocking layer has a triplet energy less than the triplet energy of the first exciton-blocking layer.

Abstract: Provided are a novel anthracene derivative of a specific structure in which benzofuran or benzothiophene is bonded to anthracene through an arylene group, a material for an organic electroluminescence device and a light emitting material for an organic electroluminescence device each containing the anthracene derivative, and an organic electroluminescence device including an organic thin film layer formed of one or plural layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the anthracene derivative alone or as a component of a mixture. The organic electroluminescence device has high luminous efficiency and is capable of emitting light with a long lifetime, and the device can be realized by the anthracene derivative.

Abstract: An organic light emitting display, and a method of manufacturing the same, the organic light emitting display including: a substrate including thin film transistors (TFTs) formed on a surface thereof; organic light emitting diodes (OLEDs) disposed on the TFTs; an encapsulating unit that encapsulates the OLEDs; and spacers formed on the encapsulating unit. The OLEDs include first electrodes electrically connected to the TFTs, a pixel defining layer formed around the first electrodes, organic thin layers formed on the first electrodes, and second electrodes formed on the organic thin layers. The spacer is formed of moisture absorbing material, and faces the pixel defining layer.

Abstract: An organic light emitting display and a manufacturing method that prevents an open edge from occurring when forming an emission layer of an organic light emitting display in order to prevent a dielectric breakdown from occurring at the edge of an anode electrode. The organic light emitting display includes: a substrate; an active layer formed on the substrate; a planarization layer formed on the active layer; an anode electrode formed on the planarization layer; a pixel definition layer formed on the upper surface of the planarization layer to cover an edge of the anode electrode; and an organic thin film formed on the pixel definition layer, wherein the pixel definition layer includes a thick film portion and a step portion that is formed to be stepped down at both ends of the thick film portion.

Abstract: An electronic device containing a hole transporting semiconductive polymer comprising a first repeat unit comprising a first nitrogen of a triarylamine in the polymer backbone and a second nitrogen of an arylamine pendant from the polymer backbone, characterised in that said semiconductive polymer performs the function of transporting holes to or from a semiconductive material in said device.

Abstract: There is provided a display element capable of efficiently emitting generated light externally and a method of manufacturing the display element, without damaging an organic electroluminescent layer. First, a transparent electrode protection material (11) is deposited on a first holding substrate (10); then organic electroluminescent light-emitting elements (12, 13, 14) are manufactured thereon; and then after sealing and holding with a sealing material (15) and a second holding substrate (16), the first holding substrate (10) and a transparent electrode protection material (11) are removed by etching or the like. According to the present invention, the removal of the first holding substrate (10) enables improvement of the emission rate generated in the electroluminescent layer (13), and improvement of brightness and contrast in the display element.

Abstract: A pixel includes an organic light emitting diode, a first transistor having a source coupled to a first power source, a control gate coupled to a first node, and a drain coupled to a second node, wherein the first transistor includes a floating gate and an insulating layer between the floating gate and the control gate, a second transistor having a source coupled to a data line, a drain coupled to the first node, and a gate coupled to a scan line, a third transistor having a source coupled to the second node, a drain coupled to the organic light emitting diode, and a gate coupled to one of a light emitting control line and the scan line, and a capacitor coupled between the first power source and the second node.

Abstract: A manufacturing method for an organic electroluminescent device that includes an effectively optical area including display pixels for display and a dummy area surrounding the effectively optical area, the dummy area including dummy pixels not for display is provided. The manufacturing method includes coating a first composite material on a first portion in the effectively optical area, the first portion corresponding to one of the display pixels, and coating a second composite material separately from the coating of the first composite material, the second composite material being coated on a second portion of the dummy area, the second portion corresponding to one of the dummy pixels, the first composite material including a first organic electroluminescent material that is dissolved or dispersed in a solvent and the second composite material including a second organic electroluminescent material that is dissolved or dispersed in a solvent.

Abstract: The invention provides a light-emitting device, a manufacturing method thereof, and an electronic apparatus which can improve the emission efficiency of light, obtain uniform brightness within a display surface in high reliability, in particular, and which can suppress lowering of the emission efficiency of light due to various wiring line structures, even though a large screen is performed. In a light-emitting device having a light-emitting element in which a first electrode on a base substrate, a functional layer having a light-emitting layer, and a second electrode are sequentially deposited, the first electrode and the second electrode are reflective, and the second electrode has an opening through which light from the light-emitting layer passes.

Abstract: A novel and improved composite thick film dielectric structure is provided to improve the operating stability of phosphors used in thick dielectric ac electroluminescent displays. The novel structure comprises one or more aluminum oxide layers disposed between the composite thick dielectric layer and the bottom of the phosphor layer of these displays.

Abstract: An organic optoelectronic component comprises a substrate (1) with a first electrode (2) on the substrate (1), at least one first organic layer sequence (31) on the first electrode (2) which is suitable for emitting electromagnetic radiation during operation, an electrically conductive inorganic protective layer (4) on the at least one organic layer sequence (31) and a second electrode (5) on the protective layer (4). At least one of the first and second electrodes (2, 5) has a layer sequence (21, 22, 23) comprising a layer (21) comprising a transparent oxide and a layer (22) comprising a transparent metal.

Abstract: A PDP includes a first substrate and a second substrate positioned to face each other, a barrier rib arranged between the first and second substrates to define a discharge cell, and discharge electrode having address electrodes and display electrodes. The address electrodes may extend along a first direction and the display electrodes may extend along a second direction intersecting the first direction. The display electrodes may include a first electrode and a second electrode extending in the second direction, such that the first and second electrodes may correspond to the barrier rib. The barrier rib may include a wide width portion having a first width W1 formed at a side of the first substrate and a narrow width portion having a second width W2 formed at a side of the second substrate. The second width W2 may be narrower than the first width W1.

Abstract: Each of the red, green and blue column electrodes has widened portions each having a row-direction width larger than that of the other portions. Each of the widened portions faces a head portion of each of the transparent electrodes of a pair of row electrodes constituting each row electrode pair. The widened portion of the green column electrode facing the green discharge cell provided with the green phosphor layer is located in a different position in the column direction from a position of each of the widened portions of the red and blue column electrodes respectively facing the red and blue discharge cells respectively provided with the red and blue phosphor layers.

Abstract: A plasma display panel adapted to minimize noise/vibration as well as a heat generated therefrom. In the plasma display panel, a display panel displays a picture while a porous pad is provided behind the display panel to prevent the transfer of noise/vibration to an associated heat proof panel. When the PDP is mounted within a case, a second porous pad can be provided on an inner surface of the case opposite the display panel and adjacent to an associated printed circuit board for additional noise/vibration damping.

Abstract: A transmission-type PDP having high emission efficiency is provided. This PDP comprises: a first substrate structure (rear unit) having a pair of display electrodes; a second substrate structure (front unit) having an address electrode and a display surface; a barrier rib being translucent; and a phosphor layer. And, at the rear unit side, a specular reflecting film having light reflectivity toward the front side is provided to a first substrate. For example, the specular reflecting film is adhered to the rear side of the first glass substrate. The emission from the phosphor layer is reflected by the specular reflecting film and transmitted by the barrier rib, thereby utilizing the emission as luminance.

Abstract: A PDP (101) with a reduced discharge inception voltage and discharge sustaining voltage for improving luminous efficiency has at least a pair of substrates (110 and 111) that are disposed in opposition to sandwich a discharge space therebetween. At least a portion of at least one of the substrates has two or more display electrode pairs (104) that include narrow bus electrodes (159 and 169), a dielectric layer (107) formed so as to cover the display electrode pairs (104), and a protective layer (108) formed so as to cover the dielectric layer (107). The dielectric layer (107) has a dense film structure with a dielectric breakdown voltage of 1.0×106 [V/cm] to 1.0×107 [V/cm].

Abstract: A high intensity discharge lamp comprises a discharge vessel and two electrode rods having substantially flat ends facing to each other in opposite positions within the discharge vessel. A spiral coil of wire is wound at least on a part of the surface of at least one of the electrode rods. The spiral coil protrudes over said end of the corresponding electrode rod and thus forms a hollow cavity for extending dimmable wattage range of the lamp.

Abstract: Laminates, which are used for cooling the discharge vessel, are fitted to the seals of the ceramic discharge vessel. They are an integral part of the seal.

Abstract: An electrode for an extra-high pressure discharge lamp, comprises large diameter portion which is symmetrical with respect to an axis of the electrode, a small diameter portion connected to the large diameter portion, wherein the large diameter portion is connected to the small diameter portion through an outer surface portion of the electrode, wherein a stripe lines like pattern portion, extending along an electrode axis direction, is formed on a portion to be brought in contact with glass of a lamp, and wherein unevenness is formed over an entire circumference of the electrode in a cross sectional view of the electrode taken along a direction perpendicular to the electrode axis direction.

Abstract: At least one light source (40) illuminates a room (10) that contains at least one item such as furniture (30). An item sensing device (62, 70) senses the item(s) and determines the location of the item(s) within the room (10). A lighting control system (82) controls the light source(s) in response to the sensed location and movement of the item(s) within the room.

Abstract: A LED driving circuit that may control current flow into an LED on a current path according to the amount of light sensed from the LED. An LED driving circuit for driving at least one LED may include at least one of: An optical sensor for receiving light emitted from the LED and generating a feedback signal having a level corresponding to an amount of the received light. A current regulator provided on a path through which current of the LED flows for regulating an amount of current flowing into the LED according to a comparison of the feedback signal with a first reference signal.

Abstract: A system to provide radiant energy of selectable spectral characteristic (e.g. a selectable color combination) uses an integrating cavity to combine energy of different wavelengths from different sources. The cavity has a diffusely reflective interior surface and an aperture for allowing emission of combined radiant energy. Sources of radiant energy of different wavelengths, typically different-color LEDs, supply radiant energy into the interior of the integrating cavity. In the examples, the points of entry of the energy into the cavity typically are located so that they are not directly visible through the aperture. The cavity effectively integrates the energy of different wavelengths, so that the combined radiant energy emitted through the aperture includes the radiant energy of the various wavelengths. The apparatus also includes a control circuit coupled to the sources for establishing output intensity of radiant energy of each of the sources.

Abstract: An electron emission device having a high electron emitting rate and a display including the device are prodivided. The electron emission device using abrupt metal-insulator transition, the device including: a board; a metal-insulator transition (MIT) material layer disposed on the board and divided by a predetermined gap with portions of the divided MIT material layer facing one another; and electrodes connected to each of the portions of the divided metal-insulator transition material layer for emitting electrons to the gap between the portions of the divided metal-insulator transition material layer.

Abstract: A traffic control signal light presents (1) a first, constant, light emission preferably from arrayed first LED light sources, in accompaniment with (2) a second light emission that is in any of time, hue, pitch (frequency), chroma and, most preferably, space, preferably from arrayed second LED light sources interspersed with the first LED light sources. The variable second light emission is preferably 8-10 Hz, and may cause Brücke-Bartley phenomenon, making that the composite light stimulates the combined human visual and nervous systems, and is all but impossible to miss or to ignore.

Abstract: A variable-effect lighting system includes a lamp assembly and a lamp controller coupled to the lamp assembly. The lamp assembly comprises a number of multi-coloured lamps in series with an AC voltage source and in series with each other. Each multi-coloured lamp comprises a first illuminating element for producing a first colour of light, and a second illuminating element for producing a second colour of light. The lamp controller is configured to vary the colour produced by the lamps by varying the conduction interval of each illuminating element according to a predetermined pattern. The controller is also configured to terminate the variation upon activation of a user-operable input to the controller.

Abstract: A light-emitting-diode drive circuit for driving n (where n is a natural number equal to or greater than two) light-emitting diodes (LED1 to LEDn) connected in series includes n? (where n? is any natural number equal to or greater than two but equal to or less than n; here, n?=n?1) lit-LED number control switches (SW1 to SWn?1). Here, there are n? ways of turning on only one of the n? lit-LED number control switches (SW1 to SWn?1) and there are, as corresponding to those n? ways, n? ways of lighting different numbers of light-emitting diodes among the n light-emitting diodes (LED1 to LEDn) connected in series.

Abstract: An electronic ballast for driving a gas discharge lamp includes a rectifier to convert an AC mains input voltage to a rectified voltage, a valley-fill circuit for producing a DC bus voltage, an inverter for converting the DC bus voltage to a high-frequency AC voltage for driving the lamp, a control circuit for controlling the inverter, and a flyback cat-ear power supply for supplying current to the inverter when the rectified voltage is less than a predetermined level. The flyback cat-ear power supply also provides power to the control circuit. Preferably, the flyback cat-ear power supply draws current only when the inverter is not drawing current directly from the AC mains, so as to make the input current to the ballast substantially sinusoidal. The result is a ballast having substantially improved power factor and THD.

Abstract: There is provided an integrated LED driving device including: a DC/DC converting part converting and outputting a DC voltage inputted from the outside by switching of a switch into a driving voltage of a magnitude suitable for driving a plurality of LED arrays; a constant current controlling part receiving at least one of information on the current flowing through the LED array and information on a voltage applied to the LED array by feed-back, the constant current controlling part including a PWM controller PWM-controlling a switching duty of the switch of the DC/DC converting part, and controlling a switching duty of each of the switches of the switching part to allow the current to flow through the LED array with a predetermined magnitude; and a control logic receiving a control signal by a user and controlling the PWM controller in response to the control signal.

Abstract: The present invention is directed to realize an optimum lamp control with an inexpensive configuration in a discharge lamp light-up control apparatus. A constant current control unit controls light-up of a discharge lamp by transmitting a control signal to an inverter and includes: a storage for storing lamp characteristics of the discharge lamp; and a CPU for obtaining information indicative of a type of the discharge lamp attached, reading the lamp characteristics from the storage based on the obtained type information, and transmitting a control signal to the inverter so that an output corresponding to the read lamp characteristics are obtained.

Abstract: A discharge lamp lighting apparatus for turning on a discharge lamp has a lighting condition in which a projection is formed at a tip of an electrode for electric discharge. In the discharge lamp lighting apparatus, when the polarity-reversal mode is the second mode, the inverter control circuit operates to generate the inverter control signal so that a DC component contained in the output current increases more than that in the first mode, when the polarity-reversal mode is the first mode, and it is detected that the lamp voltage is lower than a predetermined first voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the second mode, and when the polarity-reversal mode is the second mode, and it is detected that the lamp voltage is higher than a predetermined second voltage, the polarity-reversal mode control circuit changes the polarity-reversal mode into the first mode.

Abstract: An illumination light emitting element driving circuit includes a power factor improving circuit (2). The power factor improving circuit (2), when a load (illumination light emitting diode 17) of the illumination light emitting element driving circuit is light, performs operation (including stopping the operation) different from operation performed when the load is not light to thereby make power consumption lower than power consumption during the operation performed when the load is not light.

Abstract: The present invention provides an LED lamp structure, including a circuit board, a circular coil, and a lamp housing. The circuit board has one or more LED light bulb mounted thereon, and the circular coil includes an iron core, a primary winding and a secondary winding, wherein the primary winding of the circular coil is connected with the lamp housing for conducting an AC power, and then, the secondary winding, which is connected with the circuit board, is induced to produce a DC power for transmitting to the circuit board, thereby lighting up the LED light bulb on the circuit board.