Light-emitting diode lamp bulb capable of performing forced convection and cooling

Abstract

The invention relates to a lighting device, in particular to a light-emitting diode (LED) lamp bulb capable of performing forced convection and cooling. The LED lamp bulb comprises a casing, wherein the upper end of the casing is provided with a lampshade; LED lamp beads are arranged in the lampshade, the center of the lower end of the casing is provided with a lamp holder; the upper end of the cavity of the casing is provided with a lamp bead base plate, the LED lamp beads in the lampshade are arranged on the upper surface of the lamp bead base plate, the lower surface of the lamp bead base plate is provided with a plurality of cooling fins, the casing wall panel on the periphery of the cooling fins is provided with a gas outlet grid; the middle of the cavity of the casing is provided with an axial fan, and the lower end surface of the casing is provided with a gas inlet grid. The LED lamp bulb has good heat dissipation effect, high safety factor and long overall service life, the maintenance frequency can be lowered and the volume of the cooling fins can be reduced. Meanwhile, the distribution of the cooling fins is rational and the overall structure of the lamp bulb is compact, thus the style and size of the LED lamp bulb are similar to that of the common lamp bulb, the replacement between the LED lamp bulb and the common lamp bulb can be realized and the LED lamp bulb is extremely convenient to use. Therefore, the LED lamp bulb has wide popularization and application prospects.

Description

technical field [0001] The invention relates to an illuminating device, more specifically to an LED light bulb with forced convection and heat dissipation. Background technique [0002] The current LED lighting fixtures have the advantages of low power consumption, high brightness, and cold light source, and are lighting methods with good development prospects. However, the existing household LED lighting lamps all adopt a passive heat dissipation method. Due to the large volume of the heat sink, the volume of the lamp is also increased, which brings inconvenience to the use of the lamp. At the same time, due to the heat dissipation of the existing lamp The air flow around the chip is not good, resulting in poor heat dissipation, and the LED is an electronic component. The high operating temperature directly shortens the service life of the LED. Due to the excessively large heat sink and short service life, the cost of lighting remains high, which is not conducive to the po...

AI Technical Summary

Problems solved by technology

However, the existing household LED lighting lamps all adopt a passive heat dissipation method. Due to the large volume of the heat sink, the volume of the lamp is also increased, which brings inconvenience to the use of the lamp. At the same time, due to the heat dissipation of the existing lamp during use The air flow around the chip is not good, resulting in poor heat dissipation, and the LED is an electronic component. The high operating temperature directly shortens the service life of the LED.

Due to the large heat sink and short service life, the cost of lighting remains high, which is not conducive to the popularization of LED lighting fixtures

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