Abstract: A method for controlling a remote LED lamp includes: using a memory unit (452) to record a standard value for indicating a normal environmental brightness and a reference value for indicating a normal LED brightness; using a first sensor (41) to detect real-time brightness of the environmental light and transmit a signal (31) indicating the real-time brightness to the memory unit; using the memory unit to compare the signal with the standard value to obtain a result; using a driving unit (451) to control the LED light lamp to be turned on/off according to the result.

Abstract: A light emitting diode (LED) lamp includes a lampshade, a light guide pole and a plurality of LEDs. The light guide pole is of light permeable material and received in the lampshade. A plurality of irregular elements is formed on an outer surface of the light guide pole. A distribution density of the irregular elements decreases gradually from two ends of the light guide pole towards a middle of the light guide pole. The LEDs are mounted at the two ends of the light guide pole. Light emitted by the light emitting diodes falls incident into the light guide pole and exits the light guide pole from the outer surface thereof.

Abstract: The present invention is a push-pull ventilation hood having a push device to obtain a push air flow and a pull device to exhaust contaminant flow with an exhaust opening and the two devices properly coordinated with each other, wherein, when the push flow flows through a contaminant source, a contaminated flow of the push flow is exhausted through the exhaust opening. Based on the design process according to the present invention, a push-pull hood with the highest efficiency of push velocity can be designed and the push-pull hood can economically and effectively control the contaminant source.

Abstract: An LED (10) includes a chip with a light-emitting surface (140) and an encapsulation on the chip. The encapsulation has a light output surface (110) facing the light-emitting surface of the chip and has a convex surface (112) surrounding a concave surface (114). A portion of light (30) emitted by the light-emitting surface is refracted divergently via the concave surface to a predetermined area above and around the concave surface, and another portion of light (40) emitted by the light-emitting surface is refracted convergently via the convex surface to the predetermined area.

Abstract: A light emitting diode device includes a substrate, a plurality of light emitting diode chips mounted on the substrate and arranged in a plurality of lines and a frame located on the substrate. The frame includes a plurality of first plates each extending along a first direction of the substrate, a plurality of second plates each extending along a second direction of the substrate and a plurality of reflecting plates. The first plates and the second plates cooperatively form a plurality of receiving rooms for receiving the light emitting diode chips therein. Each reflecting plate is located above a corresponding line of light emitting diode chips and inclined with respect to the substrate.

Abstract: A light emitting diode lamp includes a lampshade and a light source. The lampshade is a portion of a hollow ellipsoid with one focus of the ellipsoid located therein. The lampshade is symmetric to a major axis of the ellipsoid. The lampshade has a vertex located on the major axis and defines a light extraction opening at one end thereof opposite to the vertex. A reflecting layer is formed on an inner surface of the lampshade. The light source is received in the lampshade and localized at the one focus of the ellipsoid. The light source includes a plurality of light emitting diodes facing the inner surface of the lampshade and the light extraction opening, respectively.

Abstract: A heat dissipation fan includes a fan frame, a bearing assembly, a stator and a rotor. The fan frame includes a base and a central tube. The central tube includes an open top end and an open bottom end. The base defines a receiving concave at a bottom surface thereof. The receiving concave communicates with the central hole. A top wall is formed by the base over the concave. A sidewall is formed between the top wall and the bottom surface of the base and surrounds the concave. A plurality of first locking units extend from the top wall into the receiving concave. The bearing assembly includes an oil sealing cover for sealing the open bottom end of the central tube. The oil sealing cover includes a plurality of second locking units which are detachably interlocked with the first locking units to mount the oil sealing cover to the base.

Abstract: An LED (10) includes a chip with a light-emitting surface (140) and an encapsulation on the chip. The encapsulation has a light output surface (110) facing the light-emitting surface of the chip and has a convex surface (112) surrounding a concave surface (114). A portion of light (30) emitted by the light-emitting surface is refracted divergently via the concave surface to a predetermined area above and around the concave surface, and another portion of light (40) emitted by the light-emitting surface is refracted convergently via the convex surface to the predetermined area.

Abstract: An LED lamp (100) includes a lamp enclosure (10), two arrays of LEDs (33) and a fixing plate (20). The lamp enclosure defines a depression (15) therein and an opening (156) at a top side thereof. The LEDs are received in the depression. The fixing plate is vertically received in the depression and has two lateral sides (23) facing towards an internal surface (110) of the lamp enclosure. The LEDs are mounted on two LED modules (30) which are respectively mounted on the lateral sides of the fixing plate so that the light rays (71, 73) emitted by the LEDs are firstly directed to and reflected by the internal surface of the lamp enclosure, and then directed to an outside of the LED lamp through the opening.

Abstract: A light emitting diode (LED) lamp (100) includes a heat sink (200), an LED module (400) attached to a bottom side of the heat sink (200), and an air exhausting duct (300). The air exhausting duct includes a cover (320) and a hollow tube (340) extending upwardly from the cover. The cover is mounted on a top side of the heat sink with an air collecting chamber (326) defined between the heat sink and the cover. The air collecting chamber communicates with an air passage (342) defined in the tube.

Abstract: A light emitting diode device includes a substrate, a plurality of light emitting diode chips mounted on the substrate and arranged in a plurality of lines and a frame located on the substrate. The frame includes a plurality of first plates each extending along a first direction of the substrate, a plurality of second plates each extending along a second direction of the substrate and a plurality of reflecting plates. The first plates and the second plates cooperatively form a plurality of receiving rooms for receiving the light emitting diode chips therein. Each reflecting plate is located above a corresponding line of light emitting diode chips and inclined with respect to the substrate.

Abstract: A light emitting diode (LED) lamp includes a lampshade, a light guide pole and a plurality of LEDs. The light guide pole is of light permeable material and received in the lampshade. A plurality of irregular elements is formed on an outer surface of the light guide pole. A distribution density of the irregular elements decreases gradually from two ends of the light guide pole towards a middle of the light guide pole. The LEDs are mounted at the two ends of the light guide pole. Light emitted by the light emitting diodes falls incident into the light guide pole and exits the light guide pole from the outer surface thereof.

Abstract: A lens (11) of an illumination device (10) includes a body (110), a light output surface (12) located on a top of the body and a plurality of recesses (120) defined in the light output surface. The recesses extend along a transverse direction of the light output surface and are distributed along a longitudinal direction thereof. Each of the recesses includes a concave, curved wall (122) and a vertical wall (123). The recesses are divided into two groups symmetrically located on the light output surface and arranged at two sides with respect to a middle recess (120a) defined in a middle portion of the light output surface. An LED (14) is received in a groove (126) defined in a bottom of the body of the lens. The lens and the LED are mounted on a reflective base (16).

Abstract: A light source module (100) includes a plurality of light emitting diodes (13), a heat dissipation device (30) and a thermoelectric cooler (20). The thermoelectric cooler has a cold side (21) and a hot side (23). The light emitting diodes are in thermal engagement with the cold side of the thermoelectric cooler. The heat dissipation device is in thermal engagement with the hot side of the thermoelectric cooler.

Abstract: A light emitting diode (LED) (100) includes a base (200), a chip body (300) and an encapsulation portion (400) sealing the chip body (300) in the base (200). The base (200) has a concave depression (220) defined therein. The depression (220) has a bottom wall (222) and a sidewall (224) extending upwardly from the bottom wall (222). The sidewall (224) is arranged in a half-ellipsoidal surface round the bottom wall (222). The chip body (300) is disposed on the bottom wall (222). The encapsulation portion (400) has a bottom portion (440) and a top portion (420). The bottom portion (440) has an outer surface (442) matingly received in the depression (220), and the top portion (420) has a convex, half-ellipsoidal surface (422). The sidewall (224) reflects light generated by the chip body (300) to run through the convex, half-ellipsoidal surface (422).

Abstract: A light source module (100) includes a plurality of light emitting diodes (13), a heat dissipation device (30) and a thermoelectric cooler (20). The thermoelectric cooler has a cold side (21) and a hot side (23). The light emitting diodes are in thermal engagement with the cold side of the thermoelectric cooler. The heat dissipation device is in thermal engagement with the hot side of the thermoelectric cooler.

Abstract: A light emitting diode (LED) lamp (100) includes a heat sink (200), an LED module (400) attached to a bottom side of the heat sink (200), and an air exhausting duct (300). The air exhausting duct includes a cover (320) and a hollow tube (340) extending upwardly from the cover. The cover is mounted on a top side of the heat sink with an air collecting chamber (326) defined between the heat sink and the cover. The air collecting chamber communicates with an air passage (342) defined in the tube.

Abstract: A heat dissipation device (100) for dissipating heat of LEDs (80) includes a heat sink (10). The heat sink includes a plurality of fins (12). Each of the plurality of fins defines a plurality of notches (120) in a peripheral edge thereof. The fins are spaced from each other from top to bottom. The notches coincide with each other from top to bottom so as to form a plurality of vertical air channels (122) in a periphery of the heat sink. A thermal base (40) has a bottom face to which the LEDs are attached. A U-shaped heat pipe (30) has an evaporator (32) connected to the thermal base and a condenser (35) extending upwardly through the fins.

Abstract: A rotary-type total heat exchanger (10) includes two blowers (21, 22), a rotary wheel (33), an air-guiding member (41) and an air-regulating member (42). The blowers are used to provide a first airflow and a second airflow into the total heat exchanger. The rotary wheel defines therein a plurality of air passageways (331). Upon rotation, the rotary wheel is capable of exchanging heat and moisture between the airflows when the airflows separately flow though the air passageways of the rotary wheel. The air-guiding member is in fluid communication with one of the blowers for guiding one of the airflows toward the rotary wheel. The air-regulating member is located between the rotary wheel and the air-guiding member for distributing the guided airflow over the air passageways of the rotary wheel.

Abstract: An LED lamp (100) has a heat dissipation device (50) which includes a base (51) and a plurality of fins (53) extending from an outer side of the base. The base includes two channels (553). A capillary wick structure is formed in each of the channels. The channels contain working liquid therein. Two ends of each channel are sealed to form a heat pipe structure (55) in the base.