Analysis of the difference between LED lamps and traditional light source lamps

First, LED lights, lamps and related definitions

1, LED lights

LED package: A component of one or more LED wafers including wire bonds or other types of electrical connectors, possibly with optical components, thermal, mechanical, and electrical interfaces. The unit does not include a power supply and a standard base. The device cannot be directly connected to the branch circuit.

LED array or module: An assembly of LED packages (components) or wafers on a printed circuit board or substrate, possibly with optical components, additional thermal, mechanical, and electrical interfaces intended to be connected to the load side of the LED driver. The unit does not contain a power supply and a standard base. The device cannot be directly connected to the branch circuit.

LED light engine (LEDlightEngine): Contains an LED package (component) or LED array (module), LED driver, and other integral combinations of photometric, thermal, mechanical, and electrical components. The device is connected directly to the branch circuit through a conventional connector that matches the LED luminaire, which is designed to not use a standard lamp holder.

Non-integrated LED lamp (LEDlamp, nonintegrated): A component that contains an LED array (module) or LED package (component) and a standard lamp cap. The device is intended to be connected to the LED driver of the luminaire via a standard lamp holder. The device cannot be directly connected to the branch circuit.

LED lamp (integrated): Contains an LED package (component) or LED array (module), LED driver, standard lamp holder and other integral combinations of photometric, thermal, mechanical and electrical components. The device is intended to be directly connected to the branch circuit by a standardized lamp holder.

2, LED lamps

LED luminaires are LED-based illuminating elements and matched drivers, as well as light distribution components, components that secure and protect the illuminating components, and complete luminaires that connect the appliance to the branch circuit components. Possible forms of LED-based lighting elements are LED packages (components), LED arrays (modules), LED light engines or LED lamps. LED luminaires are intended to be connected directly to the branch circuit.

Hybrid LED luminaires (HybridLEDluminaire.: luminaires with LED-based illuminating elements and other types of light sources such as incandescent or fluorescent lamps.

3, LED driver

LED driver: A device that contains a power supply and LED control circuitry to operate the LED package (component), or LED array (module) or LED lamp.

Interpreting the above definitions related to LEDs provides a basis for us to distinguish between LED lamps and LED lamps. In general, the main difference between LED light sources and LED lamps is whether they are directly connected to the branch circuit. LED lamps are designed to be not intended to be connected to branch circuits. A directly connected product, and an LED luminaire is a product designed to be directly connected to a branch circuit.

LED light engine is also an LED light, but its characteristics are between LED light and integral LED light. The difference from the integrated LED light is that it contains a connector that matches the lamp, not a standard lamp head, but the difference with the LED lamp is It cannot be directly connected to the branch circuit. The LED light engine can improve the maintainability of certain LED luminaires due to the ability to have a set light distribution function and a standardized connector.

Second, the difference between LED lamps and traditional light source lamps

At present, LED lamps and traditional light source lamps have many different places in terms of performance, evaluation and design.

1, in the performance evaluation of LED lamps

a. Color space uniformity evaluation to evaluate the difference in viewing angle color of the presence of LED luminaires.

The characteristics of a single illuminant of a conventional light source are different. The LED lamp used in the LED luminaire is composed of a plurality of illuminants and emits light. There is a color difference between the illuminants in the LED luminaire, and the color space uniformity evaluation is needed to evaluate the color of the LED illuminator. Spatial distribution.

b. Use life to evaluate the durability of LED luminaires.

The measurement and evaluation of the life performance of traditional light sources have been standardized and interchangeable, so the life of traditional light source lamps can be met by replacing the damaged light source and the control device of the lamp designed for 10 years of life, so it is generally not evaluated. The life of traditional light source lamps. The life of an LED luminaire is related to the life of the LED itself, the LED driver and the environment in which the luminaire is supplied to the LED, etc., and currently there are many forms of LED lamps. Except for LEDs with standard lamp heads, other LED lamps are not interchangeable, so The life of different LED luminaires can only be determined by the relevant life evaluation. When evaluating the life of an LED luminaire, it is necessary to claim not only the lumen maintenance life (LX) but also the failure rate (FX).

c. The evaluation parameters of the luminous flux ratio that the luminaire can utilize are different from those of conventional luminaires. Traditional lighting fixtures are evaluated with luminaire efficiency, while LED luminaires are evaluated for efficacy.

d. Unlike traditional illumination sources, the photometric test can be performed separately. The relative method can be used for photometric measurement. The LED light source is extremely sensitive to temperature. It is not suitable to separate the LED light source from the lamp and measure it separately. For the photometric measurement, the absolute method should be used for the lamp. The photometric test was performed as a whole.