Abstract: A performance testing apparatus for a heat pipe includes a heating set, a cooling set, and a supporting set supporting the heating set and the cooling set thereon. Position and orientation of the heating and cooling sets on the supporting set are adjustable. The heating set includes a first immovable portion and a first movable portion cooperatively defining a first channel therebetween for receiving an evaporating section of the heat pipe. A temperature sensor is exposed to the first channel for detecting temperature of the evaporating section. A cooling set includes a second immovable portion and a second movable portion cooperatively defining a second channel therebetween for receiving a condensing section of the heat pipe. A temperature sensor is exposed to the second channel for detecting temperature of the condensing section of the heat pipe.

Abstract: An LED illumination device includes a light source and a heat sink. The heat sink includes an elongated base and a plurality of fins extending from the base. The base has a heat-absorbing surface and an opposite heat-spreading surface. The fins extend upwardly from the heat-spreading surface. The light source is attached to the heat-absorbing surface, whereby heat generated by the light source is removed by the heat sink. The heat-absorbing surface is one of a convex surface and a concave surface, whereby light emitted from the light source is diverged or converged towards objects.

Abstract: An LED illuminating device includes an optical section, an electrical section, and a heat dissipation section therebetween. The optical section includes a light source. The electrical section electrically connects with the light source. The heat dissipation section includes a mounting seat, a heat pipe and a heat sink. The heat pipe includes an evaporation section fixed on the mounting seat and thermally connecting with the light source and a condenser section. The heat sink includes a plurality of umbrella-shaped fins each including a main body perpendicular to the condenser section of the heat pipe and two flanges angling downward from two opposite edges of the main body towards the light source. A plurality of air venting holes are defined in the main body and the flanges of each fin.

Abstract: An LED lamp includes an optical part, a heat dissipation part and an electric part. The optical part includes main and auxiliary LED light sources thermally attached to the heat dissipation part. The electric part includes a rechargeable battery and a circuitry for converting an external AC power source into first and second DC power sources. The auxiliary LED light source is connected to the first DC power source for providing an auxiliary illumination when the external AC power source is normally supplied or to the rechargeable battery for providing an emergency illumination when the external AC power source is interrupted. The main LED light source is connected to the second DC power source for providing normal illumination when the external AC power source is supplied normally. Photoelectric switches are also provided for controlling the action of the auxiliary LED light source.

Abstract: An LED lamp includes a heat dissipation part, an optical part and an electric part. The optical part includes an LED module attached to a heat dissipation member of the heat dissipation part and an envelope covering the LED module. The electric part includes a casing, a circuit board and a lamp cap. The casing includes a bottom plate and an annular sidewall extending from a periphery of the bottom plate to connect with the heat dissipation part and the optical part. The lamp cap includes an electric shell and an electric pole axially inserted in the electric shell. The lamp cap is rotatablely connected to the casing via the electric pole. The electric pole is fixedly connected to and electrically insulated from the electric shell. An orientation-adjusting structure is provided between the casing and the lamp cap for adjusting the illumination direction of the LED lamp.

Abstract: An LED illumination device includes a heat dissipation part, an optical part and an electric part. The optical part includes an LED module attached on the heat dissipation part and an envelope mounted on the heat dissipation part and covering the LED module. The electric part includes a casing and a lamp cap. The casing is cup-shaped. The lamp cap includes a sleeve electrode and a spring electrode attached at a bottom of the sleeve electrode. The sleeve electrode and the spring electrode electrically power the LED module. One end of the casing along an axis thereof is mounted on bottom ends of the heat dissipation part and the optical part. The sleeve electrode is disposed around the other end of the casing. The spring electrode is resiliently deformable along an axis of the sleeve electrode.

Abstract: A heat pipe includes a shell containing a working fluid therein, a capillary wick arranged within the shell and a vapor channel. The shell includes an evaporating section, a condensing section and an adiabatic section located between the evaporating section and the condensing section. The capillary wick includes a first segment occupying the whole of the evaporating section, a second segment and a third segment received in the condensing section and connected to the first segment by the second segment. The vapor channel is defined between the second segment of the capillary wick and the shell.

Abstract: An LED illuminating device includes a boiling room, an optical module, a heat insulating member and a heat exchanging member communicating with the boiling room. The boiling room defines a horizontal room and an annular, vertical room having a bottom end surrounding the horizontal room. A wick structure is received in the boiling room. Working fluid is received in the boiling room and saturated in a bottom portion of the wick structure. The optical module includes a plurality of LEDs attached to a heat absorbing member connecting with the bottom portion of the wick structure. The heat insulating member is received in the boiling room and attached to a middle portion of the wick structure for thermally insulating the middle portion of the wick structure from vaporized working fluid in the horizontal room of the boiling room.

Abstract: An LED illuminating device includes a housing defining a sealed boiling room, an optical module and an adiabatic member. The boiling room has a lower room and annular room surrounding the lower room. A wick structure is received in and attached to an inner side of the housing. Working fluid is received in the boiling room and saturated in a bottom portion of the wick structure located at a bottom of the lower room. The optical module is provided with a plurality of LEDs attached to the housing at a position under the bottom portion of the wick structure. The adiabatic member is received in the boiling room and attached to a middle portion of the wick structure at a top of the lower room for avoiding thermal and flow interactions between liquid in the middle portion of the wick structure and vapor in the lower room.

Abstract: An LED illuminating device includes an optical part having a light source therein, an electrical part and a heat dissipation part. The electrical part includes a rear shell and a circuit board electrically connecting with the light source. The heat dissipation part includes a hollow front shell having a rear end secured with the rear shell, a heat sink and a cooling fan arranged in the front shell. The front shell defines a plurality of first and second air holes. The heat sink includes a solid base and a plurality of fins. The light source is thermally connected with the base. An airflow produced by the cooling fan is introduced into the front shell via the first air holes. The airflow flows then towards the heat sink and finally flows out of the front shell via the second air holes.

Abstract: A heat pipe includes a cylinder-shaped casing (100) containing a working fluid therein and a capillary wick (200) arranged on an inner wall of the casing. The capillary wick encloses a vapor passage (300) in a center of the casing. The capillary wick includes a plurality of shaped foils stacked on the inner wall of the casing along a radial direction thereof. The foils are sintered to the inner wall of the casing and define a multi-channel structure for the working fluid to flow from a condensing section to an evaporating section of the heat pipe.

Abstract: A heat pipe includes a metal casing (10) filled with a working fluid therein, a capillary wick (20) provided inside of the metal casing and a tube (30) contacting with a surface of the capillary wick. The metal casing includes an evaporating section (40), a condensing section (60) and an adiabatic section (50) between the evaporating section and the condensing section. A vapor passage (70) is formed inside of the casing and a liquid channel (80) is defined by the capillary wick. The working fluid in vapor state flows from the evaporating section towards the condensing section along the vapor passage and the working fluid in liquid state returns to the evaporating section from the condensing section along the liquid channel. The tube separates the vapor from the liquid at a place where the tube is located.

Abstract: An LED lamp includes a cooling member, a light source, a lamp cover and a pair of lamp caps arranged at opposite ends of the cooling member. The cooling member has an elongated heat absorbing plate forming a heat absorbing surface at one outer side thereof. The light source includes a plurality of LEDs arranged on the heat absorbing surface. The lamp cover covers the LEDs therein and engages with the cooling member. Each lamp cap includes an end cap fixed on the cooling member and a connector rotatably connected with the end cap. The connector includes a pair of poles being electrically connected to the LEDs and extending outwardly therefrom for inserting into a lamp holder to get a power for the LEDs.

Abstract: A method (100) and an apparatus for manufacturing a heat-dissipation device (10) with a vacuum chamber and a working fluid therein are disclosed. The method includes the following steps: vacuuming a hollow metal casing (12) through a first open end (121) thereof until an interior of the casing reaches a predetermined vacuum degree; sealing the first open end; filling a predetermined quantity of working fluid into the casing through a second open end (123) thereof; and sealing the second open end. The apparatus includes a vacuum pump, a liquid-storage tank and a set of processing device, as used respectively for the above vacuuming, liquid-filling and sealing steps. By this apparatus, the heat-dissipation device can be manufactured at a same place without the requirement to shift the casing from one place to another place during the manufacture of the heat-dissipation device.

Abstract: An LED lamp includes a hollow lamp housing, a front optical part, a rear electrical part, and a middle heat dissipation part. The heat dissipation part includes a heat sink, a mounting seat in front of the heat sink, and a heat conducting member connecting the mounting seat with the heat sink. The lamp housing defines a plurality of air exchanging holes corresponding to the fins. The mounting seat includes a small top surface, an opposite large bottom surface, and a plurality of sloping heat absorbing surfaces between the top surface and the bottom surface. The optical part includes a plurality of light sources arranged on the heat absorbing surfaces, a light reflector located between the heat sink and the mounting seat and surrounding the heat conducting member, an optical lens located in front of the light reflector and the mounting seat.

Abstract: An LED illumination device includes an optical section at a front end thereof, an electrical section at a rear end thereof, and a heat dissipation section between the optical section and the electrical section. The optical section includes a plurality of LEDs electrically connecting with the electrical section, and a light output housing around the LEDs. The heat dissipation section includes a plurality of L-shaped heat pipes, a heat sink and a mounting seat. Each of the heat pipes includes an evaporation section and a condensation section substantially perpendicular thereto. The condensation sections of the heat pipes are received in the heat sink. The mounting seat attaches to the evaporation sections of the heat pipes. The LEDs thermally connect with evaporation sections via the mounting seat.

Abstract: An LED illuminating device includes an optical section (10), an electrical section (30), and a heat dissipation section (20). The heat dissipation section is provided with a heat dissipation device (21) which includes a heat sink (22) and a cooling fan (23) provided over the heat sink. The heat sink includes a solid base (231) and a plurality of fins (222) extending radially and outwardly from the base. A blind hole (225) is axially provided in the base. A plurality of air passage holes (226) are radially defined through the base and communicate the blind hole with an outside of the base. The cooling fan provides an airflow towards the heat sink. A portion of the airflow flows through the blind hole and the air passage holes of the base.

Abstract: A solar air conditioning device (100) includes a solar collector assembly (30), an inlet assembly (10) at an entrance of the solar collector assembly, and an outlet assembly (50) at an exit of the solar collector assembly. The solar collector assembly includes a heat-absorbing set (31) and a transparent panel (38) being assembled to a top of the heat-absorbing set. The heat-absorbing set comprises a plurality of heat-absorbing units (32) engaged with each other. Each of the heat-absorbing units includes two adjacent supporting members (33) and a heat-absorbing plate (35) sandwiched between and buckled with the two supporting members. The heat-absorbing set defines an air channel (314) with the transparent panel and a heat-absorbing channel (315) below the air channel. The inlet and outlet assemblies are in fluidic communication with the heat-absorbing channel.