05 May

What do the LED lights G4 and G9 mean?

Posted By: John Times Read: 72

What do the LED lights G4 and G9 mean?

G refers to the lamp head of the lamp, which refers to the lamp cap of two or more protruding contacts.

4 in G4 means that the distance between the two protruding contacts is 4 mm;

9 in G9 means that the distance between the two protruding contacts is 9 mm;

The entire luminaire is made by bonding the individual components with a special encapsulant.

LED G4 lamp beads

From the time when humans entered the light bulb era, we divided the lighting into three eras: the filament bulb era (incandescent lamp), the gas bulb era (fluorescent lamp), and the semiconductor lighting era (LEDG4 lamp bead). Among them, the longest history of incandescent lamps and the future mainstream LEDG4 lamp beads are the most important points of investigation. Regardless of the development of the times, the production process of the LEDG4 lamp and bead lighting industry has striking similarities, just like China is in the downstream of the industry. The core technologies are basically owned by countries such as Europe, America and Japan.

  • 1: The principle of LEDG4 lamp beacon is that when electrons pass through a layer of semiconductor material, the semiconductor material is excited to convert electrical energy into light energy. However, the light-emitting ability of a single-layer semiconductor is very weak, so a plurality of layers of single-layer materials are superimposed and pressed into a composite material like a thousand-layer cake, which is an "epitaxial sheet."
  • Therefore, the luminous efficiency of the LEDG4 lamp bead depends on how many layers can be pressed in the same thickness. The thinner the single layer material, the more layers that can be stacked, the higher the luminous efficiency. Now the thickness of each layer is generally only 2-20 microns, which also determines the most difficult process in the whole LEDG4 lamp bead production process. section.
  • 2: Cutting—LEDG4 lamp bead core: equivalent to extracting the filament from the tungsten wire material. The difference is that the cut epitaxial wafer is square. Due to the special structure of the epitaxial wafer, it is very difficult to cut the illuminating core intact, which requires not only a vacuum environment but also a professional cutting machine. At present, only two manufacturers in the world produce such a cutting machine.
  • 3: Put the core into the LEDG4 lamp bead chip, the lamp bead chip is on the LED, just like the lamp holder is the power supply part, the chip is very important equipment to realize the ideal effect of the LED, because the LEDG4 lamp bead has very high current requirement. .

LED G4 lamp bead is a light source product, which has the advantages of long energy saving and long service life.

The G4 specification means that two or more pin bases are used, and the center point distance of the pins is 4 mm.

G4 lamp beads are widely used in flat lamps such as low-voltage lamps, crystal lamps, wall lamps, spotlights, etc. At present, the largest market share is the g4 lamp beads that emit light through tungsten wire.

LEDG4 lamp beads are currently newly developed products. It has the advantage of long energy saving and long service life. It is the ideal product to replace the old tungsten filament.

The product has the advantage of only 1-3w and a service life of around 30,000 hours. There are white and warm white to choose from. The overall use of led patch light source has low heat and good luminescence performance, and is packaged in a high-grade silicone synthetic material. Light transmittance and heat dissipation are better. And reduce the risk of transportation damage.

LEDG4 lamp beads will choose which one is better

G4 interface LED lights, currently used by different manufacturers, 5050, 5630 and 3030 packages.

The 5050 has a lower unit price and a cost advantage, but its bracket has a relatively low heat dissipation capability.

The heat dissipation of the 5630 is better than 5050, and the price is slightly higher.

More than 3030 are used for high-power chip packaging, with excellent heat dissipation and high unit price. The G4 lamp of the same power has a high overall cost, but the reliability should be good.

What areas can LED G4 bulbs be used in?

The LED light source is so powerful that it can not only meet indoor lighting, so to speak, whether it is automotive lighting, medical lighting, agricultural lighting, it can excel. In this issue, Xiaobian will introduce the application fields of LED G4 bulbs in detail.

1, car lighting

High efficiency, low energy consumption, high stability, long life, small size and many other advantages make the G4 bulbs more suitable for automotive interior lighting applications. The span is from scratch, from car to taillight.

2, agricultural lighting

With the continuous development of modern agriculture, people are increasingly seeking to return to a natural and healthy life, then the development of agriculture will naturally become more important. Based on this demand, G4 bulbs have also been stimulated as the birth of a new generation of light sources. The main technologies are light adjustment, light quality adjustment and environmental protection.

3, medical lighting

The classification of medical lighting applications includes: functional lighting inside and outside the hospital building, peeping lighting, for preoperative observation, surgical lighting (providing high-quality surgical lighting to ensure smooth operation), disinfection, sterilization, radiation therapy, phototherapy, light radiation therapy Source, pathology detection source.

G9 bulb: What is it, why do you need it?

G9 halogen bulbs are a specific subset of halogen bulbs (also known as halogen lamps) that have a specific connector type. G in the G9 bulb means that the original bulb is made of glass, and 9 means that the distance between the two protruding contacts is 9 mm.

The base of the G9 bulb is double or double pin. It is not suitable for the familiar socket of your home and floor lamp – this is the so-called Edison screw socket.

This unusual bulb base usually looks like an annular metal groove around the bottom of the bulb, unlike other halogen bulbs and bulbs that use screws or straight metal connections.

These bulbs typically have a large voltage range of 120 to 130 volts and are available in a variety of applications in home, automotive, and industrial applications. These bulbs usually have a matte or tinted sheen to reduce damage to the human eye.

Use of G9 bulb

Halogen bulbs have a wide range of uses, depending on the model, and G9 bulbs usually include practical use. They are commonly used for accent lighting, table lighting, indoor and outdoor chandeliers, and lights placed under cabinets and drawers.

Many chandeliers that use halogen bulbs include G9 bulbs, which are often also dependent on these bulbs because they are readily available in most hardware stores.

When installing a G9 bulb, it is recommended not to touch it directly by hand.

The G9 bulbs that can be found in a variety of applications are line voltage (120-130 volt) halogen bulbs. Typically, G9 bulbs can be used for track lighting, retail box display lighting, table lamps, chandeliers, counter lighting, landscape lighting, bicycle or motorcycle headlights, and more.

The G9 bulb is also known as the JCD type halogen bulb. G9 is a coded name indicating that the base is 9 mm measured between the ring pins. G9 bulbs are becoming more popular and unique because they have two ring pin hooks in place to connect to the clamp socket. G9 ring pin bulbs are usually equipped with clear or frosted glass light capsules. Please note that JCD-type halogen bulbs should not come into contact with exposed skin. Paper towels, cloth or gloves are recommended for installation. The halogen capsule bulb uses semi-permeable glass, and the oil on the skin can penetrate. This oil creates hot spots on the glass, which may shorten the life of the G9 bulb. In addition, it is recommended to always turn off the power to the luminaire before replacing the G9 halogen bulb. A live power source can vibrate the internal halogen bulb filament, causing the bulb to live prematurely.

Compared to clear capsule G9 halogen bulbs, G9 halogen bulbs with frosted capsules can better diffuse light. Choosing between transparent or frosted G9 bulbs is often a matter of personal preference. The total length of the G9 bulbs is typically less than 2.5 inches, which may vary slightly depending on the production operation and the different plants in which the G9 bulbs are manufactured. Durable long-life G9 bulbs with multi-support filaments for longer life, lower gas temperatures, longer run times and brighter and whiter than standard halogen G9 JCD bulbs. G9 bulbs should not be confused with other types of long-life halogen bulbs, which have many different pin types and different distances between pins. For your safety, remember this rule of thumb, all G9 bulbs have a 9 mm ring pin!

G4 bulbs and G9 bulbs are often used in crystal lamps

At present, most of the crystal lamps use G4 or G9 bulbs, but the difference between the two is very large. In this issue, Xiaobian introduces the difference between G4 bulbs and G9 bulbs in the application of crystal lamps. Come and find out.

First, G4 and G9 refer to different types of bulb (bead) pin types, G represents two or more pin holders, and this represents the category of the lamp pins in the bulb; 4 or 9 represents the pin center point. The distance between them.

The obvious difference is that the G4 bulb can only be low voltage, because the pin distance is too close, so if your lamp is a G4 bulb, there must be a transformer in the ceiling of the lamp. Now the G9 bulb only does high voltage, that is, if your lamp is a G9 bulb, there is no transformer on it.

In terms of appearance, the G4 bulb is relatively small in size, and its pins are like embroidery needles. The G9 bulb is slightly larger in size, and its pins are like oval ring pins.

1. First of all, it is said that G4 and G9 refer to the pin types of different types of bulbs (light beads), G is a lamp holder that represents two or more pins, and this is used on the bulb to refer to the bulb. The type of the pin; the rear 4 or 9 or 5.3, 6.35, etc. refer to the distance between the center points of the pins. The standard method is to measure the inner distance and the outer distance of the two pins by the caliper and divide by 2 Yes, simply use a ruler to measure the amount of the center point of the two feet. The difference between 4mm and 9mm is very far, just know the amount.

2. For the current crystal lamps, most of them are G4 or G9. The difference between the two is very obvious. The most fundamental difference is that G4 can only do low voltage, because the distance of the pins is too close, so if your lamp is G4 Then, there must be a transformer in the ceiling of the lamp! And now the G9 only has high voltage, that is, if your light is G9, there will be no transformer on the light! This is a very good difference.

3, G4 from the appearance, the two pins are very similar to the embroidery pin, of course, the size of the bulb is also small, and the two pins of the G9 are like oval ring pins, not like a needle Pins. Of course, the volume is also slightly larger.

4, for a regular manufacturer of lamps, according to national standards, no matter which country's standards, are to watt tags, (or called the lamp head), the requirements are to be attached to the customer in the light bulb or change The place where the light bulb must be easily visible is usually placed near the lamp holder. Of course, some manufacturers may not stick to each of the heads of the crystals, but at least they have to stick one. If you don't post one, then you buy the same as the three products. If there is a label, how many volts do you read above? G4 can only do low voltage, and generally do 12V, and for G9, because it only has high voltage, it should be written around 220V.

5, Also, if you buy a lamp with a light bulb at the time, then in addition to the distinction I said above, there should be a parameter mark on the light bulb, such as writing 12V 20W or writing 220V 40W, etc., the words on one bulb can't be seen clearly. You can look at the words of other bulbs. If all of them are not printed, the quality of the lamps you buy is too unguaranteed. In fact, there are also JC bulbs for the G4 bulbs (referring to the capsule halogen bulbs).

6. Again, remind you to buy a replacement bulb, be careful that in addition to the model to be the same as the rated, the power of the bulb can not be greater than the rated power, such as the G4 bulb is equipped with a transformer, if the replacement bulb If it is larger than the rated one, the transformer can't bear it, and it is easy to cause the transformer to burn.

7. Precautions for use of high pressure products:

  • According to the local power supply situation, select the appropriate input voltage products;
  • The overall number of lamps required for initial installation should be estimated, and then the total power and the power distribution plan should be calculated according to the budgeted quantity and the rated power of the individual lamps;
  • When plugging and unplugging the product, it needs to operate under power failure
  • Please use the matching lamp holder when installing;
  • During the use of the product, it is strictly forbidden to touch the metal pin part of the lamp cap, otherwise there is danger of electric shock;
  • All products are used indoors, can not be stored in humid environment, do not use in places exposed to rain;
  • Do not insert or remove products too frequently;
  • Lamp body heating is a normal heat dissipation phenomenon.
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