Because the LED light source generates high heat during the process of illuminating, the LED uses a large number of heat-dissipating fins, especially LED lamps with a power of more than 20W, and various shapes of heat-dissipating fins can be clearly seen, and the heat-dissipating fins become The characteristics of high-power LED, but it is also a beautiful killer.
In recent years, the use of graphene and other nano-carbon materials in heat dissipation has begun to be valued and widely adopted. In fact, many years ago, people have successfully developed heat-dissipation technology using graphene nano-carbon materials, and truly graphene nanometers. The carbon film replaces the heat-dissipating fins to achieve LED finless finning. In 2013, it applied for several patents: US 9170015 B2. He is Lu Hongzhi, Ph.D. in Optoelectronic Engineering, National Taiwan University.
Dr. Lu Hongzhi said that many of the related companies engaged in nano-heat dissipation use graphene nano-carbon materials for heat dissipation, which is often a demand for customers. However, in the end, it is often found that the effect of cooling on the spray is not significant. The biggest reason is that Graphene nano-carbon materials use heat radiation, heat radiation should play well, the prerequisite is that the heat flow design of the machine components is also good. If the machine components commissioned by the customer are poorly designed, they will not be sprayed directly after screening, and there will be no cooling effect. of.
Therefore, Lu Hongzhi's entrustment to the client has been screened by him personally, and the machine components are qualified to be sprayed. If the unqualified ones are returned, the failure rate often exceeds the pass rate; because of the hard work and experience accumulated by him, he has already practiced Like an antiquities expert, you can judge the pros and cons at a glance.
Because the heat of the LED light source must be well transmitted to the film layer of the graphene nano carbon material spray, the heat dissipation effect will be good, and the mechanical components of the product determine the key to the effectiveness of the graphene nano carbon material; this is often many The key factors ignored by the industry.
Because each company has its own industrial design, it is generally reluctant to move more components. Therefore, Dr. Lu Hongzhi developed a graphene LED light engine. The heat does not need to pass through the machine components, so the machine components can use any material. Any design has no effect on heat dissipation and directly solves customer problems.
Figure 1 is a comparison chart of heat dissipation capability of different graphene nano-carbon materials. The LED light using graphene nano-carbon material has a significantly lower light source temperature (red line) than unpainted LED (black line); as for nano-carbon material itself The impact is not large, such as nano-carbon spheres, carbon nanotubes, or diamond-like carbon; but Dr. Lu Hongzhi said that it can be further improved, and can be further reduced by blending different graphene nanocarbon materials through a specific proportion of formula (blue line) .
Figure 1. Comparison of heat dissipation capabilities of different graphene nanocarbon materials
Figure 2 is a 20W graphene LED light engine. With the application range of 20W LED, PLCC type LED light source can be used to directly maintain the temperature of the light source within the safe 80 ÌŠC standard. The external components can be arbitrarily played by the operator. .
Figure 2, 20W graphene LED light engine
Figure 3 is a 100W graphene LED light engine, used in conjunction with high-power lamps, using COB-type LED light source, spraying graphene nano-carbon film on the back of the carrier, so that the fins can be kept safe and the temperature of the light source is kept at 80. Within the ÌŠC standard, it allows the luminaire designer to arbitrarily create ideas without worrying about the components that affect heat dissipation.
Figure 3, 100W graphene LED light engine
Figure 4 is the [crown] of graphene LED art light. Dr. Lu Hongzhi directly uses the graphene LED light engine on the art lamp. Because there is no heat sink fin to affect the appearance, and the light engine can directly dissipate heat, the machine components can be used. The art lampshade that can't dissipate heat will not have any influence. It can turn LED art light and bring a new revolution of LED lights.
Figure 4, the crown of graphene LED art light
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