Four-point requirements for solid-state lighting for high-power LED packages

Compared with traditional lighting fixtures, LED fixtures do not require the use of filters or filters to produce colored light, which is not only efficient, but also pure in color, and can achieve dynamic or gradual color changes. The color temperature is maintained while maintaining a high color rendering index to meet different application needs. However, new requirements are also put forward for its packaging, which is embodied in:

(I) Modularity Through the interconnection of a plurality of LED lights (or modules), it is possible to realize good superposition of the lumen output and meet the requirements of high-brightness lighting. With modular technology, multiple point light sources or LED modules can be combined in a random shape to meet lighting requirements in different areas.

(II) Maximizing System Efficiency In order to increase the light output efficiency of LED luminaires, in addition to the need for suitable LED power supplies, efficient heat dissipation structures and processes must also be adopted, as well as optimizing the internal/external optical design to improve the overall system efficiency.

(3) Low-cost LED lamps must have competitive advantages in cost (mainly the initial installation cost) to go to the market, and the package accounts for a large part of the production cost of the entire LED lamp. Therefore, the new package structure and technology are adopted. Improving light efficiency/cost ratio is the key to achieving commercialization of LED lamps.

(4) Easy replacement and maintenance Due to the long life of the LED light source and the low maintenance cost, higher requirements are placed on the packaging reliability of the LED lamp. It is required that the LED luminaire design be easily improved to meet the requirements for more efficient LED chip packaging in the future, and that the interchangeability of the LED chips should be better, so that the luminaire manufacturer can choose which chip to use.

The LED lamp light source can be composed of a plurality of distributed point light sources. Due to the small size of the chip, the light fixtures packaged are light in weight and exquisite in structure, and can meet the needs of various shapes and different levels of integration. The only downside is that there is no ready-made design standard, but at the same time it gives the design ample room for imagination. In addition, the primary goal of LED lighting control is power supply. Since the mains power supply is high-voltage AC (220V, AC), and LEDs need constant current or current limiting power, a conversion circuit or embedded control circuit () must be used to implement an advanced calibration and closed-loop feedback control system. In addition, through the use of digital lighting control technology, the use and control of solid-state light sources rely mainly on intelligent control and management software to achieve a new relationship between users, information and light sources, and to fully realize the imagination of designers and consumers. force.