摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.