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, pure in color, but also allows for dynamic or gradual color changes. Maintain a high color rendering index while changing the color temperature to meet different application needs. However, new requirements have been put forward for its packaging, which are embodied in:
(1) Modularization
A good lumen output stack can be achieved by interconnecting multiple LED lights (or modules) to meet the requirements of high brightness illumination. Through the modular technology, multiple point light sources or LED modules can be combined according to random shapes to meet the lighting requirements of different fields.
(2) Maximizing system efficiency
In order to improve the light-emitting efficiency of LED lamps, in addition to the need for a suitable LED power supply, efficient heat dissipation structures and processes must be employed, as well as optimized internal/external optical design to improve overall system efficiency.
(3) Low cost
In order to go to the market, LED lamps must have a competitive advantage in cost (mainly refers to the initial installation cost), 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 used to improve the light efficiency/cost. The ratio is the key to commercialization of LED lamps.
(four) easy to replace and maintain
Due to the long life of the LED light source and low maintenance cost, high requirements are placed on the packaging reliability of the LED lamp. LED luminaire design is required to be easily modified to meet the future requirements of more efficient LED chip packaging, and the interchangeability of LED chips is required to be good, so that the luminaire manufacturers can choose which chip to use.
The LED luminaire light source can be composed of a plurality of distributed point light sources. Due to the small size of the chip, the packaged luminaire is light in weight, compact in structure, and can meet various shapes and different integration requirements. The only downside is that there are no ready-made design standards, but at the same time provide ample imagination for the design. In addition, the primary goal of LED lighting control is to supply power. Since the general mains power supply is high voltage alternating current (220V, AC), and the LED needs a constant current or current limiting power supply, it is necessary to use a conversion circuit or an embedded control circuit to implement an advanced calibration and closed loop feedback control system. In addition, through digital lighting control technology, the use and control of solid-state light sources is mainly realized by intelligent control and management software, thus establishing a new relationship between users, information and light sources, and can fully utilize the designers and consumers. imagination.
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