LED bulb with efficient heat dissipation function

Abstract

The invention discloses an LED bulb with an efficient heat dissipation function. The LED bulb comprises a light source, a transparent lamp cover, a lamp body and a power supply. A light source is fixedly arranged on the upper portion of the lamp body, is electrically connected with the power supply arranged in the lamp body and is a columnar light-emitting column, and a plurality of SMD LED lamp beads are distributed on the radial surface of the light source. The edge of the upper portion of the lamp body is covered by the transparent lamp cover. The bulb further comprises a reflective cover, and the reflective cover comprises a barrel body and a bottom plate. The barrel body is arranged on the light-emitting column in a sleeved mode. Light-permeable holes are formed in positions, corresponding to the LED lamp beads, of the barrel body. The top end of the barrel body protrudes out of the transparent lamp cover and is provided with a ventilating hole. A horn-shaped bottom plate for covering the lamp body stretches outwards from the edge of the bottom end of the barrel body in the radial direction. A protrusion part is arranged on the bottom plate and corresponds to the light-permeable holes. A heat dissipation channel penetrating through the LED bulb is further arranged in the LED bulb. The LED bulb is high in brightness and good in heat dissipation effect, and light emitted by the LED bulb is soft and uniform.

Description

technical field [0001] The invention relates to an LED light bulb, in particular to a high-brightness LED light bulb. Background technique [0002] LED light bulbs in the prior art generally include a lamp body, a transparent lampshade installed on the top of the lamp body, and a power supply located in the lamp body. An LED light source is arranged in the transparent lampshade. The LED light source is electrically connected to the power supply in the lamp body. When the LED light source is powered on, it emits light. The light emitted by it can be irradiated through the transparent lampshade to achieve the purpose of lighting or decoration. However, in order to make the light soft and not glaring, the LED light bulbs in the prior art usually set the lampshade as an opaque structure to avoid discomfort caused by directing the LED lamp beads to the human eye, thereby reducing the brightness of the LED lamp. In order to achieve the required brightness, a more powerful LED bul...

AI Technical Summary

Problems solved by technology

However, in order to make the light soft and not dazzling, the LED light bulbs in the prior art usually set the lampshade as an opaque structure to avoid discomfort caused by directing the LED lamp beads to the human eye, thereby reducing the brightness of the LED lamp. In order to achieve the required brightness, a more powerful LED bulb must be selected, resulting in a waste of electric energy

At the same time, if the large amount of heat emitted by the LED light source and power supply cannot be taken away in time, it will cause the LED light source or power supply to burn out, shortening the service life of the LED bulb. Although the LED bulb in the prior art is provided with a radiator, the heat dissipation effect Not ideal, unable to make the LED light source and power supply work normally at a lower operating temperature

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