Basic concepts of LED lamps and LED light sources

Lighting fixtures are an indispensable appliance in people's daily life. Their function is to provide artificial lighting to meet the lighting needs of various places. Its traditional definition is to include all the zeros, components, and wiring accessories necessary to connect and disconnect the power source, except for the light source. The light source refers to an object that is itself emitting light and can continuously emit light.

At present, under the background of “energy saving and emission reduction” in the world, LED has a wide range of applications as a new type of light source in various fields. It is the focus of the current lighting electrical industry to develop standards and evaluate the performance quality of LED lighting products. LEDs come in a variety of forms, including LED packages, LED arrays, LED modules, LED lights, etc., which are combined with luminaires, including standard lamp heads, built-in, stand-alone and monolithic, which also result in different maintenance. Types such as light source replaceable and non-replaceable, maintainable and non-maintainable. In addition, the dazzling design and style are difficult to define by traditional methods. Especially in the definition of LED lamps and LED lights, some vague and even wrong concepts have caused confusion in the industry. It will have an adverse impact on the development of the LED lighting industry and the development and testing of standards.

In June 2010, IEC TC34 held an LED seminar in Helsinki, Finland. While discussing many technical issues, LED lighting and LED lighting issues also became the focus of experts at the conference. This paper mainly introduces the latest standard information from abroad, analyzes the concept of lamps and lamps, and discusses the definition of LED lamps and LED lamps.

First, the relevant definition

1. Definition of light source related to LED

Whether it is an LED array, an LED module or an LED light, it is a light source.

(1) Lamp: A light source made to produce optical radiation (usually visible).
Note: This term is also sometimes used for certain types of illuminators.

(2) Light Emitting Diode (LED): A pn junction semiconductor device that emits incoherent light radiation when forward biased. The emitted spectrum may be in the ultraviolet, visible or infrared wavelength region.

(3) LED die: A small piece of luminescent semiconductor material that is mounted on a given functional LED line.

(4) LED array or module: LED package (component) or wafer component on a printed circuit board or substrate, possibly with optical components, additional thermal, mechanical, and intended connection to the LED driver load Side electrical interface. The unit does not contain a power supply and a standard base. The device cannot be directly connected to the branch circuit. As shown in Figure 1.

Figure 1 LED array or LED module

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