Abstract: The disclosure relates to a life prediction system for a fan of a lamp. The system comprises a fan signal detecting module to detect at least one working parameter of the fan; and a micro control unit to receive the working current signal, the environment temperature signal and the working rotation speed signal of the fan. The detecting module comprises a current detecting unit to detect a working current of the fan and output a working current signal; a temperature detecting unit to detect a working environment temperature of the fan and output an environment temperature signal; and a rotation speed detecting unit to detect and output a working rotation speed signal of the fan. The micro control unit calculates a predicted residual life of the fan based on the received working current signal, the environment temperature signal, the working rotation speed signal, through the life model of the fan.

Abstract: An LED lamp protection circuit comprising: a driving circuit, a rectifier circuit coupled with the driving circuit, an LED luminous component circuit coupled with the rectifier circuit, and an arcing protection circuit coupled between the rectifier circuit and the LED luminous component circuit. The arcing protection circuit and the LED luminous component circuit are connected in parallel. When the LED lamp works under a normal condition, the arcing protection circuit is in blocking state. When at least one circuit between the rectifier circuit and the LED luminous component circuit opens, the arcing protection circuit is turned on, the driving circuit and the arcing protection circuit form a loop circuit to extinguish arc.

Abstract: The present invention discloses a lamp, mounted on a socket when in use, comprising a cap, a housing, and a light source, wherein the cap is adapted to connect to the socket, one of the cap and the housing comprises a tubular body, and the other comprises a cylindrical cavity for accommodating the tubular body, and the tubular body rotates in the cylindrical cavity around an axis of the cap and moves along the axial direction of the cap to effect relative rotation and relative telescopic motion between the cap and the housing. The lamp of the present invention allows both relative rotation and relative telescopic motion between the cap and the housing, therefore facilitating adjustment of the illumination direction, and is adaptable to different types of fittings.

Abstract: The present invention provides a recessed light fixture comprising a housing and a bottom plate, wherein the housing is composed of a first side wall and a second side wall opposite to each other, with both the first side wall and the second side wall are respectively provided with a first latching portion and a second latching portion, and the bottom plate is a light diffuser plate or a ventilation plate. The bottom plate comprises a first edge and a second edge opposite to each other. By engaging at least a portion of the first and second edges with the first and second latching portions respectively, the bottom plate can be assembled directly onto the housing while preventing it from moving up or down. The present invention solves the problem of complex and time consuming assembly of currently used recessed light fixture housings and bottom plates, and possesses the advantages of a simpler structure, convenient assembly, as well as a vast reduction in the number of parts and components.

Abstract: A method for controlling the rotational speed of a fan of an LED lamp, comprising: presetting a corresponding relationship between a voltage, a current and a temperature for an LED chip in the LED lamp in the controller, as well as presetting a corresponding relationship between the temperature of LED chip and the speed of the fan in the controller, measuring the voltage and current of the LED chip, obtaining the current calculated temperature of the LED chip through the measured voltage and current, and further determining the current desired fan speed through the obtained current calculated temperature, using the controller to control the fan to rotate at the current desired speed, thereby cooling the LED chip. Additionally a corresponding system for controlling the rotational speed of the fan of an LED lamp and an LED lamp including the system.

Abstract: The present invention relates to a light emitting diode (LED) lamp, which includes: a base configured to electrically connect with an external power supply; at least one first printed circuit board (PCB), with at least one LED mounted thereon; a driver module, electrically connected to the base and the first PCB, and configured to drive an LED; a heat dissipation module, thermally contacted with the first PCB, and configured to dissipate heat generated from the LED; a connecting device, connected to the heat dissipation module; and a replaceable active cooling module, detachably connected to the connecting device, and configured to generate a cooling fluid for cooling at least one of the PCB and the heat dissipation module.

Abstract: The present invention discloses a light-emitting diode lamp for connecting to an external current source. The LED lamp comprises: a lighting source comprising a plurality of LEDs; a power control module for connecting in parallel to the external current source; and a driver unit connected between the power control module and the lighting source, wherein the power control module is configured to transform a source voltage of the external current source to a desired load voltage based on output power requirement of the plurality of LEDs; and the driver unit is configured to rectify the desired load voltage and output a driving voltage to drive the plurality of LEDs. Without the need to modify a lamp base of a conventional High Intensity Discharge lamp, the LED lamp of the present invention can be directly used to replace the HID lamp.

Abstract: The present invention discloses an LED lamp adapted to work in a circuit that contains a magnetic ballast. The LED lamp comprises a bridge rectifier, a filter capacitor, an LED light source, a transistor, and a pulse width modulation controller. The bridge rectifier is configured to convert the alternating current supplied by the magnetic ballast into a direct current. The bridge rectifier comprises a first input terminal, a second input terminal, a first output terminal, and a second output terminal, where the first and second input terminals are electrically connected to the magnetic ballast. The filter capacitor is electrically connected to the first and second output terminals of the bridge rectifier. The LED light source is electrically connected to the first and second output terminals of the bridge rectifier. The transistor comprises a drain electrode, a source electrode, and a gate electrode.

Abstract: The present invention relates to an illumination device, including: a support member; and at least one first light source on the support member and at least one second light source on the support member, where the first light source has a first light distribution, the second light source has a second light distribution, and the first light distribution is different from the second light distribution.

Abstract: The present invention provides an LED lamp and a temperature control circuit applied to the LED lamp. The LED lamp includes at least one LED unit, a magnetic ballast, and an LED drive circuit. The magnetic ballast is coupled to a power and configured to limit and stabilize a received alternating current. The LED drive circuit includes a temperature control circuit. The temperature control circuit is coupled to the magnetic ballast and connected in parallel with the LED unit, is configured to detect an internal temperature of the LED lamp and adjust an output power of the LED unit, and includes a thermal sensitive module having a negative temperature coefficient thermistor and a phase cut circuit.

Abstract: This invention provides a ventilation kit adapted to be coupled to a recessed light fixture, and comprises two supporting members. The first is adapted to be coupled with at least one edge of the recessed light fixture, while the second is adapted to be coupled with the gridsystem of the ceiling. There is also through-hole for air circulation. Mounting the ventilation kit onto an existing recessed light fixture enables the existing recessed light fixtures to have either an air supply or air return ventilation feature. This invention also discloses a recessed light fixture assembly with either an air supply or air return ventilation feature.

Abstract: A method for controlling the rotational speed of a fan of an LED lamp, comprising: presetting a corresponding relationship between a voltage, a current and a temperature for an LED chip in the LED lamp in the controller, as well as presetting a corresponding relationship between the temperature of LED chip and the speed of the fan in the controller, measuring the voltage and current of the LED chip, obtaining the current calculated temperature of the LED chip through the measured voltage and current, and further determining the current desired fan speed through the obtained current calculated temperature, using the controller to control the fan to rotate at the current desired speed, thereby cooling the LED chip. Additionally a corresponding system for controlling the rotational speed of the fan of an LED lamp and an LED lamp including the system.

Abstract: A bipartite capper component for an illuminating lamp includes a first portion formed of a first material and a second portion formed of a second material different from the first material. The second portion of the capper component is in contact with the first portion of the capper component. The first portion of the capper component is configured to threadedly engage within a standard threaded metal base component of the illuminating lamp.

Abstract: The present invention discloses a lamp, mounted on a socket when in use, comprising a cap, a housing, and a light source, wherein the cap is adapted to connect to the socket, one of the cap and the housing comprises a tubular body, and the other comprises a cylindrical cavity for accommodating the tubular body, and the tubular body rotates in the cylindrical cavity around an axis of the cap and moves along the axial direction of the cap to effect relative rotation and relative telescopic motion between the cap and the housing. The lamp of the present invention allows both relative rotation and relative telescopic motion between the cap and the housing, therefore facilitating adjustment of the illumination direction, and is adaptable to different types of fittings.

Abstract: A polycrystalline body comprising a MgO/ZrO2-doped aluminum oxide in which alumina grains have an average size of at least 20 ?m and wherein the magnesium oxide is present in an amount of at least 250 ppm and the zirconium oxide is present in an amount of at least about 20 ppm of the weight of the ceramic body, and the magnesium and zirconium oxides are present at a molar ratio of about 1:2 to about 15:1.

Abstract: A polycrystalline body includes aluminum oxide, magnesium oxide, zirconium oxide, and lutetium oxide. The lutetium oxide is present in an amount of at least 10 ppm of the weight of the ceramic body, and the magnesium and zirconium oxides are present at a molar ratio of from 0.5:1 to 3:1.

Abstract: A polycrystalline body includes aluminum oxide, magnesium oxide, zirconium oxide, and lutetium oxide. The lutetium oxide is present in an amount of at least 10 ppm of the weight of the ceramic body, and the magnesium and zirconium oxides are present at a molar ratio of from 0.5:1 to 3:1.