Bulb heat dissipation cup, processing method thereof and bulb

Abstract

The invention discloses a bulb heat dissipation cup which comprises a main body; the main body comprises a barrel wall, a barrel bottom and an opening; the opening is arranged opposite to the barrel bottom and comprises a neck; and the outside diameter of the neck is gradually reduced in an opening direction. The invention also provides a bulb which comprises the above bulb heat dissipation cup, aplastic shell, an LED lamp panel and a light guide cover; the bottom of the plastic shell is provided with a connection lamp holder; the lower end of the plastic shell is provided with a shrinkage portion; the upper end of the plastic shell is provided with a second opening; the main body is nested into the plastic shell; the second opening is arranged opposite to the opening; the neck of the main body is in close fit with the shrinkage portion; the LED lamp panel is installed on the barrel bottom; and the light guide cover seals the second opening. As for the bulb provided by the invention,the service life of the bulb can be effectively prolonged.

Description

technical field [0001] The invention relates to the lighting field, in particular to an LED bulb lamp. Background technique [0002] LED bulbs are a new green light source that replaces traditional incandescent bulbs, and have a wide range of market value. As an important part of the LED bulb, the radiator is used to quickly export and dissipate the heat generated by the LED chip to the environment. The heat dissipation effect of the radiator directly affects the quality of the LED bulb. Generally, the radiator is an aluminum radiator or an aluminum alloy radiator. Because the insulation of aluminum and aluminum alloy is poor, it is necessary to add insulating glue or potting glue for safety. In the prior art, the shell of the bulb lamp generally uses It is a radiator structure made of plastic-clad aluminum. The radiator is composed of an aluminum die-casting inlay and a thermally conductive plastic injection molding. Yes, it can improve the heat dissipation effect of the ...

AI Technical Summary

Problems solved by technology

However, in the production process, the plastic itself has good ductility, and the ductility of metal aluminum is poor. During the process of heat shrinkage and cold contraction, it is easy to cause cracks in the plastic shell, which affects the heat dissipation effect, especially for high-power Bulb lamps require a larger radiator volume, but the larger the radius of the radiator, the more obvious the cracking after injection molding, which seriously affects the service life of the bulb lamp.

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