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.
The Push Button Switches, also known as the control button (referred to as the button), is a low-voltage electrical appliance that is manually and generally can be automatically reset. The Push Button Starter Switch is usually used to issue a start or stop command in the circuit to control the turning on and off of electrical coil currents such as electromagnetic starters, connectors, and relays.
The On Off Push Button Switches refers to a switch that pushes the transmission mechanism with a button to make the movable contact and the static contact open or close and realize circuit switching. It is a master control device with a simple structure and a wide range of applications. In the electrical automatic control circuit, used to manually send control signals to control connectors, relays, electromagnetic starters, etc.
This Pushbutton Switches is a kind of electric device that is used to switch on and off the small current circuit when the action is released. Generally used in AC and DC voltage below 440V, the current is less than 5A in the control circuit, generally do not directly manipulate the main circuit can also be used in the interconnection circuit. In actual use, in order to prevent desperation, different marks are usually made on the buttons or painted with different colors, and the colors are red, yellow, blue, white, black, green, and the like.
The Momentary Push Button Switch could be divided into metal push button switches and Led Light Switches and ordinary snap button type, mushroom head type, self-locking type, self-resetting type, rotary handle type, with indicator light type, lighted symbol type and key type, etc., with single button and double Buttons. Generally, it adopts a water-storage structure, which consists of a button cap, a return spring, a static contact, a moving contact and a casing. It is usually made into a composite type, and has a pair of normally closed contacts and normally open contacts, and some products can pass. The series connection of multiple elements increases the number of contact pairs. There is also a self-contained button that automatically holds the closed position when pressed, and can be turned on only after the power is turned off.
When the Metal Switches is not pressed, the movable contact is connected with the upper stationary contact. The pair of contacts is called a normally closed contact. At this point, the movable contact is disconnected from the following static contact. The pair of contacts is called a normally open contact: the button is pressed, the normally closed contact is open, the normally open contact is closed, and the button is released. Restore the original working state under the action of the return spring
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