What is the material of the LED lamp itself?

LED lamp shell can make plastic, iron or aluminum, but aluminum as the shell of the lamp is the majority, because LED in the work, will produce heat, resulting in its junction temperature rise, will seriously affect its light efficiency and life, and even dead lights. Aluminum has better heat dissipation and can dissipate the heat generated to the surrounding environment. LED lamp shell is a kind of blister acrylic sheet (organic material) made of lamp shell, which has the function of preventing electric shock.

The LED light shell is not only covered on the lamp in order to make the light gather together, but also can prevent electric shock, and also has an effect on protecting the eyes, so there will be a light shell on each lamp. The protection requirements are high, and generally engineering plastics PC are used, as well as polycarbonate, acrylic and other polymer materials that are not easy to deform, high strength, waterproof and light-resistant. At present, many industrial lighting LED lamps and lanterns are used in military, aerospace, metallurgy, mining and other fields, and most of them are corrosion-resistant and high-strength materials such as aluminum alloy and steel plate.

Car aluminum, die-casting aluminum, etc.: advantages: thermal conductive block; Cons:

High cost, conductive (not good than safety regulations). LED is the abbreviation of English Light Emitting Diode (light-emitting diode), its basic structure is an electroluminescent semiconductor material chip, cured to the bracket with silver glue or white glue, and then connected to the chip and circuit board with silver wire or gold wire, and then sealed with epoxy resin around to protect the internal core, and finally install the shell, so the LED lamp has good seismic performance. The application field involves the production of daily household appliances and machinery such as mobile phones, desk lamps, and home appliances.

LED uses cold light source, small glare, no radiation, and does not produce harmful substances in use. The working voltage of LED is low, DC drive mode is adopted, and the ultra-low power consumption (single tube, electro-optical power conversion is close to 100%, and it is more than 80% energy-saving than traditional light sources under the same lighting effect. LED has better environmental benefits, there is no ultraviolet and infrared light in the spectrum, and the waste can be **, no pollution, no mercury elements, safe to touch, and a typical green lighting source.

1) Material ADC12 (Japanese aluminum alloy grade, also known as No. 12 aluminum, Al-Si-Cu alloy, is a die-casting aluminum alloy, suitable for covers, cylinder blocks, etc.). (2) Anti-rust aluminum: mainly Al-MN and Al-Mg alloys.

Because its aging strengthening effect is not obvious, it is not suitable for heat treatment strengthening, but it can be improved by work hardening. The main performance characteristic of this type of alloy is that it has excellent corrosion resistance, so it is called anti-rust aluminum. （3）pa：

Polyamide has high mechanical strength, high softening point, heat resistance, low coefficient of friction, wear resistance, self-lubrication, shock absorption and sound absorption, oil resistance, weak acid resistance, alkali resistance and general solvent resistance, good electrical insulation, self-extinguishing, non-toxic, odorless, good weather resistance, poor dyeing. (4) Q235: Carbon structural steel with a yield point (S) of 235 MPa.

As the thickness of the material increases, its yield value decreases. Due to the moderate carbon content, the comprehensive performance is good, and the strength, plasticity and welding properties are well matched, and the most widely used. （5）led ：

Its basic structure is an electroluminescent semiconductor material chip, which is cured to the bracket with silver glue or white glue, and then connected to the chip and circuit board with silver wire or gold wire, and then sealed with epoxy resin around to protect the internal core, and finally the shell is installed, so the LED light has good shock resistance. Resin is generally considered to be a product of plant tissue secretion, but there are also synthetic ones. Resin has good plasticity, so resin lamps are often very exquisite, the shape is very rich, the color is gorgeous, and it is also very suitable.

However, if the resin lamps are not handled well, some harmful substances will be volatilized, which will be harmful to the human body. <>

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The small LED bulb quietly leads to the small piece of metal in the middle (it glows when it is energized). It is a semiconductor crystal. The composition is relatively complex, and the main materials are gallium, rubidium, arsenic, and yttrium.

These crystals are sintered to form semiconductor light-emitting diodes. The color of the light is also different.

LED panel lamps belong to high-power lighting fixtures, and are usually embedded in installation, so LED panel lights have high requirements for heat dissipation, generally using metal frame and backplate panel lights, which can ensure that the lamp body is fully dissipated, and long-term use can reduce light decay and prolong life. Yimei lighting panel lights are made of thickened aluminum frames and metal backplates, and their extremely high thermal conductivity makes their design life exceed 60,000 hours.

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The five major raw materials of LED are: wafers, brackets, silver glue, gold wires, and epoxy resin.

1. The composition of the wafer: it is composed of gold pad, P pole, N pole, PN junction, and back gold layer (double pad chip has no back gold layer). A wafer is a P-layer semiconductor element, and the N-layer semiconductor elements are rearranged and combined by electrons.

2. The structure of the bracket is 1 layer of iron, 2 layers of copper plating (good conductivity, fast heat dissipation), 3 layers of nickel plating (anti-oxidation), 4 layers of silver plating (good reflectivity, easy to weld wire).

3. Silver glue, due to many types, taking H20E as an example, it is also called white glue, milky white, conduction adhesion (baking temperature: 100 °C silver powder (conductive, heat dissipation, fixed wafer) + epoxy resin (curing silver powder) + diluent (easy to stir).

4. Gold wire, the gold wire used in LED has the material of gold wire, the material of gold wire used in LED is generally gold content, and the use of gold wire is soft with high gold content, easy to deform and good conductivity and good heat dissipation, so that a closed circuit is formed between the chip and the bracket.

5. Epoxy resin, two components A and B:

A glue: is the main agent, composed of epoxy resin + defoamer + heat resistance agent + diluent.

Agent B: It is a curing agent, which is composed of acid + release agent + accelerator.

There are many kinds of common lighting materials, including glass, plastic, iron, copper, crystal, and acrylic.

The following describes the characteristics of several commonly used lighting materials:

1. Glass: glass lamp is a popular type of lamp, the main advantage is good transparency and high illumination; Excellent high temperature resistance.

However, the shortcomings of glass lamps are also more obvious: they are mainly reflected in the relatively dull and single shape, and the oil smoke and dust falling on it are more conspicuous and relatively troublesome to clean.

2. Paper: paper lamp is one of the most commonly used lamp varieties in modern simple decoration and Chinese decoration, the advantages are light weight, soft light, easy to install and easy to replace, with a strong cultural atmosphere, the disadvantage is that it is afraid of water, poor heat resistance, and some poor quality paper lamps are also prone to discoloration and dust absorption, so if you choose paper lamps, it is best to choose high-quality brand-name products.

3. Plastic: Plastic lamp has many advantages such as changeable shape, low cost, easy to clean and maintain, rich color selection, etc., and is currently more popular among young people.

4. Wrought iron: wrought iron lamps and lanterns are made of iron as the main material, which is the most used material at present. Due to the common and moderate material of wrought iron lamps and lanterns, it is the choice of many lamps and lanterns.

The most worrying thing about wrought iron lamps is the problem of rust, which depends on the manufacturer's treatment of the surface of the lamp, if the treatment is not good, the impact on the life of the lamp is very large.