Ceramic radiator for high-power light-emitting diode (LED) module or lamp and manufacturing process for ceramic radiator

Abstract

The invention relates to the technical field of radiators for light-emitting diode (LED) modules or lamps, in particular to a ceramic radiator for a high-power light-emitting diode (LED) module or lamp and a manufacturing process for the ceramic radiator. The ceramic radiator comprises a ceramic radiating base plate, and a ceramic radiating columns; the upper surface of the ceramic radiating baseplate is provided with a plurality of non-penetrating blind holes; the ceramic radiating columns are arranged in the blind holes; and the ceramic radiating base plate is provided with a plurality of screw holes and wire outlets. The process comprises the following steps of: 1) a die sinking stage; 2) a blank manufacturing stage; 3) a sintering stage; 4) an adhering stage; and 5) a secondary sintering stage. The invention has the advantages that: the ceramic radiator has high radiating performance, and the radiating efficiency of LED chips is improved; and by the flow arrangement of the manufacturing process, the die sinking cost is low, procedures are simple and convenient, the success rate is high, and the yield of finished products is greatly improved, so that a great quantity of raw materials are saved, and a problem that environment is polluted by a great amount of waste ceramic clay generated because of the ultralow yield of the finished products is solved.

Description

[technical field] [0001] The invention relates to the technical field of radiators for LED modules or lamps, in particular to a ceramic radiator for high-power LED modules or lamps made of ceramic materials and its manufacturing process. [Background technique] [0002] Traditionally, radiators that can be applied to LED modules or lamps with high power above 25 watts are made of cast aluminum or aluminum fins plus copper pipes. Because aluminum and copper are metal materials, they will be oxidized and corroded when used outdoors or at the seaside, and cannot resist acid, alkali and salt spray. Long-term use will reduce the heat dissipation efficiency of LED lamps. The use of ceramic radiators can overcome the influence of the above-mentioned metal radiators on the radiators outdoors or in environments with heavy acid, alkali and salt. At present, the manufacturing process of large-scale ceramic radiators can be divided into two types: one is to use CNC to cut out the shape ...

AI Technical Summary

Problems solved by technology

At present, the manufacturing process of large-scale ceramic radiators can be divided into two types: one is to use CNC to cut out the shape of radiators and heat dissipation columns one by one (the heat dissipation column is to increase the surface area of ​​ceramics for heat radiation and contact with air convection), However, this kind of process is time-consuming, the production cost and working hours are quite high, and it is not a condition for mass production; the other is to open a ceramic mold, but a large ceramic mold (radiator bottom plate + heat dissipation column) that can be integrally formed, stamped out The molding yield rate is too low, only 30-40% yield rate, because a few heat dissipation columns are easy to get stuck in the mold when the mold is withdrawn, and it is easy to cause damage to the mold when the mold is withdrawn and pulled out. As a result, the yield rate is extremely low, and a large amount of material is wasted. The relative cost is also high, and it is difficult to promote the market.

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