Ceramic radiator and LED (light-emitting diode) illuminating lamp adopting same

Abstract

The invention belongs to the technical field of LED (light-emitting diode) illumination lamp and particularly relates to a ceramic radiator and an LED (light-emitting diode) illuminating lamp adopting the ceramic radiator. The radiator is a ceramic integrally-molded radiating component; the radiating component comprises a working plane and a radiating surface arranged on the back surface of the working plane; the working plane is provided with an LED assembly circuit; and an LED lamp particle is fixed in a welding way on the LED assembly circuit of the ceramic radiator. When the ceramic radiator is in use, the heat generated by the LED lamp particle is directly transferred to the ceramic radiator, thus the heat is radiated with a good effect, and the failure of the LED illuminating lamp due to poor radiation effect is avoided. The ceramic radiator is an insulator, the safety performance of the ceramic radiator is guaranteed, and the raw materials have the characteristic of low cost and good corrosion resistance, so that the cost of the LED illuminating lamp is reduced and the LED illuminating lamp is convenient to popularize.

Description

Technical field: [0001] The invention relates to the technical field of LED lighting lamps, in particular to a ceramic radiator and an LED lighting lamp using the radiator. Background technique: [0002] LED lighting is a new generation of light source that uses semiconductor materials as the electricity-to-light conversion medium. It has the characteristics of energy saving, environmental protection, long life, and small size. It has become the mainstream lighting product replacing energy-saving lamps. Over the years, developed countries have spent a lot of money to support the development of the LED lighting industry and promote its early popularization and use; China has also introduced various policies to support its development since the 1970s. With the implementation of the global ban on production and sales of incandescent lamps, LED lighting will face the opportunity to replace incandescent lamps, with a market size of hundreds of billions. But there are still sever...

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Problems solved by technology

[0003] The photoelectric conversion efficiency of LED is limited by the development of current technology, the efficiency is only 15-20%, 80-85% of the electric energy is converted into heat, and LED cannot dissipate heat through infrared radiation, so high-power LEDs face serious heat dissipation problems, while heat conduction Bad will greatly reduce luminous efficiency and shorten life

[0004] At present, the heat dissipation method of LED lighting is: the LED chip substrate of the LED lamp grain is connected to a metal heat sink, and the heat is released to the atmospheric environment through the metal heat sink. However, most of the existing LED metal heat sinks are made of metal aluminum, which has the following disadvantages: 1. The conductivity of aluminum limits the development of LED lighting fixtures, and the safety of use cannot be guaranteed; 2. The chip substrate of the LED component circuit is placed above the metal radiator. The chip substrate is generally an insulator, and the thermal conductivity of the chip substrate is not good: so LED The heat generated by the lamp grain must be conducted through the chip substrate and then transferred to the radiator, which seriously affects the heat transfer efficiency, and the heat dissipation effect is not good. In many cases, the LED lighting lamp fails due to poor heat dissipation; 3. The price of metal raw materials is high and the corrosion resistance is poor , so that the price of LED lighting lamps remains high, it is difficult to enter the civilian market

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