For the current common incandescent bulbs or fluorescent lamps and power-saving bulbs, even if the product itself generates heat, the high heat of the components can be effectively isolated, so that the light source and the power supply socket do not cause unexpected public security problems due to heat. However, LED solid-state lighting is different. Once the LED components are concentrated in a single point of high temperature operation, more active means must be taken for heat treatment. At the same time, an active and effective heat treatment mechanism can be used to avoid the public security problem of the lamps...
Conventional light sources or luminaires have many problems of high heat during operation, such as halogen bulbs or incandescent bulbs. In the case of incandescent lamps, the tungsten filaments are heated in a specially treated bulb environment.
In fact, the high temperature is generated on the filament instead of the lamp holder. Even if the lamp holder is indirectly generated by the radiant heat and heat conduction of the bulb glass or the metal by the tungsten filament, the temperature generated is within an acceptable safety range. In addition to non-direct contact conduction, safety is relatively high.
LED solid-state light source heat treatment problem is more complicated than traditional lamps
However, the heat treatment in the form of a LED solid-state light source may become a new application safety issue. Most people think that LED has high energy conversion efficiency, low driving energy advantage, and high natural safety. However, in order to achieve the purpose of daily lighting, LED solid-state light source must strengthen the unit by increasing the power of a single set of components. The output of the piece is clear. For example, the luminaire factory will adopt multiple LED components to enhance the output effect, and the multi-component operation can also improve the problem of the LED solid-state light source bias point light source, so that the LED solid-state light source technology can produce a light bulb like a bulb. The surface light effect.
At the development site, in order to enhance the output lumen of the unit, higher current must be applied to make the PN junction of the LED chip generate more lumens, but higher current will also make the temperature of the single-point LED assembly rise and harder. The treatment, even in order to improve the light-type performance and luminous efficiency of the luminaire, adopting a multi-component combination form will also aggravate the high temperature problem of the LED luminaire, making the heat dissipation problem more difficult to handle.
Looking at the current development trend of the LED lighting market, most of the LED light source module factories will first develop the niche market products. Because of the high unit price and high profit, they can also quickly enter the development technology with avant-garde LED light source through technical differences. Markets, for example, recessed lights, wall lights, and ceiling lamps for interior lighting and situational lighting applications have become more common forms of design for LED light source lamps. The power saving benefits of replacing traditional lamps have also attracted the attention of relevant industry players.
Basically, the thermal management design that LED light source lamps must focus on, in the recessed lamp, wall lamp, and ceiling lamp products that may be used in a closed or semi-closed cycle, poses more stringent challenges. The lamp developer must obtain materials and products. More resources are invested in configuration, active/passive heat dissipation mechanism, and driver chip design to avoid product public security problems.
The LED embedded luminaires are small in size, and often adopt multi-component integration, and the heat dissipation design of the module is difficult.
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