摘要:
A securing device (30) is used for securing a heat sink (10) to a printed circuit board (40) with a heat-generating electronic component (41) mounted thereon. The securing device includes a V-shaped elongated main body (31), a first locking leg (34), a second locking leg (332) and a resilient member (32). The first locking leg and second locking leg are connected to two opposite ends of the main body respectively for engaging with a retention frame (20) on the printed circuit board. The resilient member includes a planar-shaped supporting plate (321) engaging with a bottom portion of the main body and at least one resilient foot (322) extending downwardly from the supporting plate. The resilient foot deforms to exert a resilient force on the heat sink when the heat sink is assembled to the electronic component by the securing device.
摘要:
A securing device includes a securing member defining a securing hole therein, and a fastener extending through the securing hole. The fastener includes a spring, and a bolt having a main portion, a bottom fixing portion, and a top head portion. The securing hole includes a large portion, a small portion, and a concave around the small portion. A diameter of the small portion is greater than the main portion and smaller than the fixing portion. A diameter of the large portion is greater than the fixing portion and smaller than the spring. The main portion extends through the small portion with the fixing portion tightly abutting the securing member. The spring is mounted around the main portion and received in the concave. The spring is compressed between the head portion and a step of the securing member in the concave.
摘要:
A heat sink clip (30) includes an elongated resilient main body (31) with two spaced barbs (315) at a first end thereof, a first locking member (33) coupled with a second end of the main body and a moveable second locking member (32) movably coupled with the first end of the main body. The barbs each vertically extend and include a neck (3151) connecting with the main body and a locking end (3152) at a free end thereof. The moveable second locking member includes an operating portion (321) and a locking leg (322) defining two connecting slots (323) therein. Each of the connecting slots includes a longitudinally narrow portion (3231) and a longitudinally wide portion (3232) beside the narrow portion. The barbs enter the connecting slots through the wide portions and the necks are received in the narrow portions.
摘要:
A securing device includes a securing member defining a securing hole therein, and a fastener extending through the securing hole. The fastener includes a spring, and a bolt having a main portion, a bottom fixing portion, and a top head portion. The securing hole includes a large portion, a small portion, and a concave around the small portion. A diameter of the small portion is greater than the main portion and smaller than the fixing portion. A diameter of the large portion is greater than the fixing portion and smaller than the spring. The main portion extends through the small portion with the fixing portion tightly abutting the securing member. The spring is mounted around the main portion and received in the concave. The spring is compressed between the head portion and a step of the securing member in the concave.
摘要:
A light emitting diode (10) includes an LED chip (14) and an encapsulant (16) enclosing the LED chip. The LED chip has a light emitting surface (141), and the encapsulant has a light output surface (161) over the light emitting surface. The light output surface defines a plurality of annular, concentric grooves (163). Each groove is cooperatively enclosed by a first groove wall (165) and a second groove wall (166). The first groove wall is a portion of a circumferential side surface of a cone, and a conical tip of the cone is located on the light emitting surface of the LED chip.
摘要:
An LED lamp (100) includes a plurality of LED modules (20) and a thermal module (30). Each of the LED modules has a plurality of LEDs (220). The thermal module is secured to a side of the LED modules. The thermal module includes a plurality of fins (320). The fins are stacked with one above another with a gap defined between two adjacent fins. Each of the fins defines two opening (325). The openings of the fins coincide with each other from top to bottom so as to form two channels (328). The channels are used for air to flow therein to exchange heat with the fins.
摘要:
An LED lamp (10) includes a lamp base (100), an optical lens system (400), an LED (500) mounted in the optical lens system and a heat dissipation device (300) interconnecting the lamp base and the optical lens system. The heat dissipation device includes a heat sink (334) and a heat pipe (332). The heat sink includes a central block (3340), a plurality of fins (3342) mounted on an outer circumferential face of the central block and a receiving hole (3346) defined axially through the central block. The heat pipe is circumferentially retained in the receiving hole and in thermal contact with the LED.
摘要:
A heat dissipation device includes a heat sink and a cooling fan arranged thereon. The cooling fan includes a motor-stator and an impeller mounted around the motor-stator. The motor-stator is arranged on a middle of the heat sink. The heat sink includes a base and a plurality of fins extending upwardly from the base. The heat sink defines a plurality of notches incising the fins. The notches are angled towards the middle of the heat sink immediately under the motor-stator of the cooling fan.
摘要:
An LED lamp (100) includes a lamp enclosure (10), a heat sink (51) and two LED modules (30). The lamp enclosure has a recess (15) and an opening (156). The heat sink is received in the recess of the lamp enclosure. The LED modules are attached to a bottom of the heat sink and oriented downwardly and outwardly towards an internal surface (1110) of the lamp enclosure. Light emitted by the LED module is firstly directed to the internal surface and other internal surfaces (130, 1130), and then reflected from the internal surfaces to an outside of the LED lamp through the opening.
摘要:
A heat dissipation device includes a heat sink and a cooling fan arranged thereon. The cooling fan includes a motor-stator and an impeller mounted around the motor-stator. The motor-stator is arranged on a middle of the heat sink. The heat sink includes a base and a plurality of fins extending upwardly from the base. The heat sink defines a plurality of notches incising the fins. The notches are angled towards the middle of the heat sink immediately under the motor-stator of the cooling fan.