Convection radiating type LED (light-emitting diode) bulb

Abstract

The invention discloses a convection radiating type LED (light-emitting diode) bulb which has a small radiator, large light-emitting area and a good heat dissipation effect, and comprises a lamp head (1), a light-transmitting shade (2), a ventilation body (3), a drive circuit (4) and a heat conduction column (5) provided with a hollow cavity, wherein the ventilation body (3) is connected with the lamp head (1) and the light-transmitting shade (2) respectively; the outer wall of the heat conduction column (5) is provided with a plurality of LEDs (6); the top of the light-transmitting shade (2) is provided with a ventilation opening (21); the ventilation body (3) is provided with a plurality of ventilating slots (31) or a plurality of ventilation holes (32); the ventilating slots (31) or the ventilation holes (32) are communicated with the hollow cavity of the heat conduction column (5) and the ventilation opening (21) sequentially so as to form convection radiating air ducts; and the heat of the LEDs (6) is conducted through the heat conduction column (5) and dissipated to the outside world through the convection radiating air ducts. The convection radiating type LED bulb can be widely applied to the field of LED bulbs.

Description

technical field [0001] The invention relates to an LED light bulb. Background technique [0002] At present, in the field of lighting, LEDs have been more and more widely used in light sources for lighting because of their advantages such as energy saving, high luminous efficiency, long life, and fast start-up. Due to the directional nature of LED light, it does not emit light at 360° like CFL and incandescent lamps. Therefore, when LEDs are used as light sources to replace traditional incandescent lamps or CFL light sources, their application effects are limited to a certain extent. Existing LED light bulbs generally use exposed radiators for heat dissipation. In order to meet the requirements of heat dissipation, the radiators are often large, which affects the light-emitting area. Paradoxically, to ensure the heat dissipation area, the light-emitting area must be sacrificed. The current common practice is to make the light-emitting surface into a hemisphere. Even so, the...

AI Technical Summary

Problems solved by technology

Due to the directional nature of LED light, it does not emit light at 360° like CFL and incandescent lamps. Therefore, when LEDs are used as light sources to replace traditional incandescent lamps or CFL light sources, their application effects are limited to a certain extent.

Existing LED light bulbs generally use exposed radiators for heat dissipation. In order to meet the requirements of heat dissipation, the radiators are often large, which affects the light-emitting area. Paradoxically, to ensure the heat dissipation area, the light-emitting area must be sacrificed. The current common practice is to make the light-emitting surface into a hemisphere. Even so, the power of the LED bulb usually cannot exceed 8W, otherwise it is difficult to meet the heat dissipation requirements.

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