LED (Light-Emitting Diode) lamp with heat radiation structure

Abstract

The invention discloses an LED (Light-Emitting Diode) lamp with a heat radiation structure. The LED lamp comprises a lamp head, a power panel, a fixing cover for the power panel, a lamp cup, a light source board, a heat radiator, and a lamp cover or a lens. A plurality of heat radiation fins are distributed around the heat radiator at intervals; openings are arranged at the two ends of the lamp cup; the heat radiator is mounted in the lamp cup; a heat conduction cavity is formed between each two adjacent heat radiation fins and the inner wall of the lamp cup; the light source board is provided with the heat radiator at one opening of the lamp cup; a first air vent is arranged in the lamp cover or the lens; an external diameter of the fixing cover for the power panel is less than an internal diameter of the lamp cup; a second air vent is formed by a gap between the fixing cover for the power panel and the other opening of the lamp cup; one end of each head conduction cavity is vertically communicated with the outside directly through the corresponding first air vent or the light source board and the corresponding first air vent; and the other end of each each heat conduction cavity is vertically communicated with the outside through the second air vent. With the adoption of the structure, a chimney effect is generated, so that the heat radiation properties of the LED lamp are greatly improved.

Description

technical field [0001] The invention relates to the field of LED lighting lamps, in particular to an LED lamp with a heat dissipation structure whose heat dissipation effect is significantly improved. Background technique [0002] LED lamps, also known as light-emitting diode lamps, are becoming the main product in the new generation of lighting market due to their high efficiency, energy saving, longevity, compactness and other technical characteristics, and they are powerfully driving the rapid development of the environmental protection and energy saving industry. At present, with the shrinking size of LEDs and the increasing power of LEDs, LEDs generate more and more heat, and the thermal management of LED lamps has become a key factor affecting their light quality and service life. For example, when the LED is overheated, the color coordinates and color temperature of the lamp will drift, and the luminous flux will decrease. At the same time, the service life of the lam...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing LED lamps directly use their lamp cups as heat sinks, and the heat dissipation effect is not good

In order to overcome this shortcoming, some directly add heat sinks on the outer wall of the lamp cup to increase the contact area with the air, and some install a radiator in the lamp cup, but for the former, due to the The heat is mainly concentrated in the interior, and simply increasing the heat dissipation area of ​​the lamp cup cannot conduct the heat outward in a timely and effective manner. At the same time, due to the increase in the heat dissipation area, the overall weight of the lamp increases, which is not conducive to the development of small and light lamps; for the latter , the cavity surrounded by the lamp cup and the radiator can certainly form a heat conduction cavity, but because of the connection between the heat conduction cavity and the outside world, the smooth flow of air flow cannot be guaranteed, and rapid heat dissipation cannot be achieved.

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