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Q:

What are the characteristics of LED injection mold

A:

Nowadays, with the development of science and technology, the concept of LED is getting deeper and deeper, abandoning high pollution, high energy consumption and pursuing high energy saving LED has been It has become popular, and LED injection molding module is one of the products. It has been used in many fields of life. It may be very common in life but not well known by people. In fact, people are familiar with the physical objects it is applied to, but they are completely unfamiliar with the concept of LED injection molding modules.

First, What is a LED injection molding module

In fact, the LED injection molding module is a patch type table where LED light beads are posted on the PCB, and then the injection molding machine is used for gravity pressure. An extruded component consisting of wires. At present, there are three main models on the market, they are 5050, 5630 and 3528, which are currently the most widely circulated on the market. The LED injection molding module is not only beautiful and unique in appearance, but also has a relatively high waterproof level, which has now reached IP65 or above.

Currently, LED injection molding modules are used in a wide range of applications. In fact, there are no objects that use LED injection molding modules in our lives. It's all over the place, and the objects are quite noticeable. For example, the large advertising display screen used outside the supermarket uses LED injection molding modules.

Seeing this, you will definitely think of hotels and KTVs, and LED injection molding modules are also used in them. In addition, LED injection molding modules are also widely used in stage decoration and three-dimensional luminous characters. These are relatively common in our lives.

2. Product Features of LED Injection Molding Module

1. The LED injection molding module can present seven common colors, and it can also complete seven colors in these seven colors. Jumps and gradients, and can also complete colorful jumps and gradients. When the LED injection molding module is used in the display screen, it can make the screen displayed on the display achieve a dazzling effect, and it can also attract people's attention. Look, this is why LED injection molding modules are widely used in advertising displays.

2. The light source of the LED injection molding module is TOP5050led light source, which also shows that it has no light spots and good consistency. High-quality features such as low light attenuation.

3. The LED injection moulding module also greatly reduces the energy consumption of the product, and the low energy consumption it produces makes its service life long It also grows one after another. At the same time, it also has the characteristics of high brightness. Even if it is used on the display screen, it will not affect the display of the screen even on a sunny day.

4. The LED injection moulding module is also more convenient in installation and disassembly, and it will not cause too much trouble in the reorganization and installation. For example, in the use of stage decoration, it can provide greater convenience for the construction of stage decoration, and it can be disassembled immediately after the stage performance, and it will not cause waste of resources.

These are the overall introduction to the LED injection molding module. Now that you have read these introductions, do you have a better understanding of the LED injection molding module? do you understand? In fact, LED injection molding modules are very common in our lives, but we only see the finished products that use it and forget the silent effort behind these finished products.

Q:

Analysis of characteristic parameters of LED

A:

LuminousIntensity;IV

Light intensity is defined as the luminous flux emitted per unit solid angle, in Candlelight (CandELa, cd). Generally speaking, a light source emits its luminous flux in different directions with different intensities, and the visible light radiation intensity emitted per unit solid angle in a specific direction is called light intensity.

Chromaticity

The human eye's perception of color is an intricate process. In order to quantify the description of color, international According to the visual experiments of standard observers, the Institute of Illumination (CIE) records the visual perception caused by the radiant energy of different wavelengths by the human eye, and calculates the color matching function of the three primary colors of red, green and blue. After mathematical conversion, the so-called so-called CIE1931ColorMatchingFunction(x((), y((), z(()), and according to this color matching function, several color measurement definitions have been developed subsequently, so that people can describe and use color.

According to the CIE1931 color matching function, the stimulus value of the human eye to visible light is expressed as XYZ, which is converted by the following formula The x,y value, or CIE1931 (x,y) chromaticity coordinates, through this unified standard, the description of color can be quantified and controlled.

x,y:CIE1931 ChromaticityCoordinates

However, since the color gamut constructed with (x,y) chromaticity coordinates is non-uniform, It is difficult to quantify the color difference, so CIE converted the CIE1931 chromaticity coordinates in 1976, so that the color gamut formed is a nearly uniform chromaticity space, so that the color difference can be quantitatively expressed, that is, the CIE1976UCS (UniformChromaticityScale) chromaticity coordinates, It is represented by (u',v'), and the calculation formula is as follows:

Dominant wavelength (λD)

It is also one of the ways to express color. y), mark it on the CIE chromaticity coordinate diagram (as shown in the figure below), connect the chromaticity point of the E light source (chromaticity coordinates (x, y) = (0.333, 0.333)) and this point and extend the connecting line, The wavelength value where this extension line intersects with the spectral locus (horseshoe shape) is called the dominant wavelength of the DUT. However, it should be noted that the same dominant wavelength will represent multiple different chromaticity points under this labeling method, so it is more meaningful when the chromaticity point of the DUT is adjacent to the spectral locus, and white LEDs cannot be used in this way. Describe its color properties.

Purity

It is an auxiliary representation when describing the color by the dominant wavelength, in percentage, it is defined as the color of the test piece The percentage of the linear distance between the degree coordinates and the chromaticity coordinates of the E light source and the distance from the E light source to the spectral locus (SpectralLocus) chromaticity coordinates of the main wavelength of the DUT. The higher the purity, the closer the chromaticity coordinates of the DUT are to its The spectral color of the dominant wavelength means that the higher the purity of the DUT, the more suitable it is to describe its color characteristics with the dominant wavelength. LED is an example.

ColorTemperature

The radiant energy distribution of a light source is similar to the radiant energy distribution of a standard black body (BlackBodyRadiator) at an absolute temperature At the same time, the chromaticity of the light source is the same as the chromaticity of the black body radiation. At this time, the chromaticity of the light source is represented by the corresponding absolute temperature. This temperature is called the color temperature (ColorTemperature), and the blackbody radiation at each temperature presents the Chromaticity can be plotted on the chromaticity diagram, called the PlanckianLocus. The higher the temperature of the standard black body, the more blue stimuli the radiated light will produce to the human eye, and the less red stimuli. However, in actual measurement, no light source has the same radiant energy distribution as a black body. In other words, the chromaticity of the light source to be measured usually does not fall on the Planckian locus. Therefore, it is calculated that the chromaticity coordinates of the light source to be measured are closest to a certain coordinate point on the Planckian locus, and the black body temperature of this point is defined as the correlated color temperature (CCT) of the light source, usually CIE1960UCS (u, v) color Find it from the degree diagram and describe it with the color difference △uv. It should be noted that this representation is meaningful only when the chromaticity of the light source is close to the Planckian locus, so for LED measurement, it is only applicable to the description of the color of white LEDs.

Q:

8 tips to teach you to distinguish the pros and co

A:

The vicious competition of LED market prices, the listing of a large number of substandard products has violated the energy saving, long-term Life, environmental protection and other real values, how to distinguish the pros and cons of LED lamps, should start from the following aspects:

1. Look at the overall "power factor of lamps": the power factor is low, indicating the driving power and circuit used If the design is not good, the service life of the lamp will be greatly reduced, the power factor is low, and the life of the lamp with the best lamp beads will not be long.

2. See "Lamp heat dissipation conditions - material, structure": LED lamps heat dissipation is also very important, the same Lamps with power factor and lamp beads of the same quality, if the heat dissipation conditions are not good, the lamp beads work at high temperature, the light decay will be large, and the life of the lamp will be reduced.

3. Look at "Lamp quality": The quality of the lamp depends on the chip quality and packaging technology.

4. Look at the driving power supply used by the lamps. The service life of the power supply is relative to other parts of the lamps. It is much shorter. The life of the power supply affects the overall life of the lamp. The theoretical life of the lamp bead is 50,000-100,000 hours, while the life of the power supply is 0.2-30,000 hours. The design and material selection of the power supply will determine the life of the power supply.

5. Look at the light effect: the same lamp bead power, the higher the light effect, the higher the brightness, the same The lower the power consumption, the more energy saving.

6, look at the power efficiency, the higher the power efficiency, the better, the higher the power consumption of the power supply itself The smaller it is, the greater the output power.

7. Is it in compliance with safety standards? my country's LED lighting safety standards have been introduced, please choose LED lighting according to the national safety standards.

8, is to see if the workmanship is fine.

A good quality LED lamp, in addition to the above-mentioned main aspects, should also be based on different The use environment has different technical requirements, such as moisture-proof, dust-proof, anti-magnetic, anti-lightning and so on.

Q:

What should be considered in architectural landsca

A:

In the overall consideration of the landscape LED lighting design of the building, the following points should be confirmed first:

1 viewing direction

Buildings may be seen from different directions and angles, but generally, before starting the design, we must first decide on a specific direction as the main viewing direction.

2 distance

The possible viewing distance of the average person. The distance will affect the clarity of people's observation of the facade appearance, and also affect the decision of the level of illumination.

3 Surrounding environment and background

The light and shade of the surrounding environment and background will affect the illumination required by the subject. If the perimeter is dark, a little light is needed to illuminate the subject; if the perimeter is bright, the light must be intensified to bring out the subject.

In building landscape LED lighting design, it can be roughly divided into the following steps:

4 Determine the desired lighting effect

Buildings may have different lighting effects due to their different appearances, or they may be more uniform or have strong changes in light and shade; they may also be more plain or more lively, depending on the properties of the building itself. to decide.

5 Choose a suitable light source

Factors such as light color, color rendering, efficiency, and lifespan should be considered when selecting a light source. The light color has an equivalent relationship with the color of the exterior wall material of the building. Generally speaking, golden bricks and yellow-brown stone are more suitable for irradiation with warm color light, and the light source is high-pressure sodium lamp or halogen lamp.

6 Determine the required illuminance

The required illuminance mainly depends on the light and shade of the surrounding environment and the color of the building exterior wall material. The recommended illuminance value is for the main facade. Generally speaking, the illumination of the secondary facade is half of that of the main facade, and the three-dimensional effect of the building can be expressed by the difference in light and shade between the two sides.

7 Choose the right light fixture

Generally speaking, square-shaped floodlights have a larger distribution angle; round-shaped lamps have a smaller angle; wide-angle lamps have a more uniform effect, but are not suitable for long-distance projection; narrow-angle lamps are suitable for long-distance projection , but the uniformity is poor when used at close range.

8 Calculation of Illuminance and Number of Lamps

After the above steps are completed, the number of lamps is determined according to the illuminance calculation of the selected light sources, lamps, installation positions, etc., so that the effect after installation can be as close as possible to the expected. The appearance of the building is expressed by the projection of lights at night,

The resulting effect will be quite different from how it feels during the day. Therefore, in the design of LED lighting engineering, the effect obtained is not necessarily the same as that of the daytime, but it is important to show the characteristics of the building.