All-plastic LED bulb lamp for enhancing convection heat radiation

Abstract

The invention discloses an all-plastic LED bulb lamp for enhancing convection heat radiation. A heat radiation disc and a heat conduction barrel are arranged on a heat radiator, the heat radiation disc is provided with heat radiation vent holes, the heat conduction barrel is provided with convection holes, and therefore a chimney type convection effect is formed. Novel cooling fins are arranged at the bottom of the heat radiation disc and are of a special structure designed based on the topology principle according to heat source distribution, and the heat radiation performance of the bulb lamp can be effectively improved in cooperation with a chimney type convection structure. In the aspect of light emitting, by means of the LED bulb lamp, an LED light source module is directly welded to a PCB on the top face of the heat radiation disc, and meanwhile the top face of the heat radiation disc is arranged to be a free-form surface so that the requirement for the all-round light angle of the energy star can be met by distribution of light emitted by an LED chip. Meanwhile, the heat radiator of the LED bulb lamp is made of high heat conduction plastic, the production cost is reduced, and therefore the LED bulb lamp both has a good heat radiation effect and a good light emitting effect, and has the beneficial effect of being low in cost.

Description

technical field [0001] The invention relates to the field of heat dissipation of LED bulb lamps, in particular to an all-plastic LED bulb lamp with enhanced convection heat dissipation. Background technique [0002] LED (Light Emitting Diode) is a semiconductor that can convert electrical energy into light energy. Compared with traditional lamps, it has obvious advantages: no radiation, high luminous efficiency, low power consumption, long life and easy integration. The advantage is that it is a new generation of light source that leads to the lighting revolution and the upgrading of the traditional lighting industry. Especially in today's theme of energy saving, emission reduction and low-carbon environmental protection, semiconductor lighting has become a new economic growth point, so it has been highly valued by governments and industries. However, LED is an electroluminescent device. Under the action of external electric energy, only about 30-40% of the input electric e...

AI Technical Summary

Problems solved by technology

In current LED bulb lamps, the LED light source board is generally welded on the circuit board (or heat sink) by connecting multiple LED chips in series or in parallel. Because the LED chips need good heat dissipation, the existing LED bulbs The concentrated arrangement of LED chips in the bulb leads to unsatisfactory heat dissipation performance, which in turn affects the service life of the entire LED bulb lamp

With the rapid development of LED lighting technology, people have put forward various solutions for the heat dissipation of LED lighting lamps, and some even equip LED cooling fans or return-type cooling pipes, which undoubtedly greatly increases the cost of LED lamps and hinders LED lamps. popularization of

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