Retro bulbs are becoming increasingly popular today, complementing the new age LED efficiency with the look of old-fashioned incandescent lamps. One notable example is the filament lamp, with its characteristic shape and built-in filaments of various shapes that are highly decorative.

LED filament lamps are incandescent lamps made from LEDs from the outside. In the past, LED light sources to achieve a certain degree of light and light area, need to install lenses and other optical devices. On the one hand, it affects the light effect; on the other hand, it will reduce the energy-saving effect that LED should have. But LED filament with transparent shell, can achieve 360° full angle light, large angle light, with no need to add a lens, to achieve three-dimensional light source, bringing unprecedented lighting experience. LED filament lamp is evenly heated, and emit a warm glow. Next, we will introduce you to the composition and classification of LED filament lamps and other important points to note when purchasing.

Components of LED Filament Lamps

In general, the main components of filament lamps are: light bars (substrate, chips, conductive, phosphor), drivers, lamp heads, columns and bulb housings. Each part corresponds to a different material, performance and price, then you can choose according to your purchasing needs.

1)First of all, let’s look at the substrate on the light bar, substrate materials are mainly sapphire, ceramic, metal and glass.

In the LED filament lamp several substrate materials, glass material is not comparable, because it seems the glass material cost is the lowest, but in fact in the production process, glass yield is not high, and pull up the production cost. In terms of performance, the various characteristics of sapphire are better, but from a cost perspective it is the most expensive. In terms of scale, the choice of metal material is relatively the most appropriate. And in the current LED packaging devices, 90% of the enterprises using metal materials in the package.

The price, luminous flux and thermal performance of each substrate are compared as follows:

Price: sapphire > ceramic > metal > glass

Luminous flux: sapphire > glass > ceramic > metal

Thermal performance: metal > ceramic > sapphire > glass

2) The wires on the light bar are made of pure gold, alloy and iron wires respectively, generally to the low-end LED filament lamps with alloy and iron wires, to the high-end LED filament lamps with 99.9% pure gold wires.

3) There are 3 types of filament lamp drivers: RC driver, IC driver and linear driver

RC drive: Voltage fluctuation range of IC drive is very narrow, generally low voltage range of 110V-130V and high voltage range of 210-230V. Too high voltage will lead to product burn, and too low will make the filament lamp dark with strobe.

IC drive: It can accept 10% voltage fluctuation range, generally low voltage range 90-130V, high voltage 180-260V, relatively non-stroboscopic.

Linear drive: LED filament lamps are small in size. The limited installation space makes the volume of components very demanding, so that the only drive power products that can match the small power and small installation space are high voltage linear. Due to the "cavity" effect caused by high voltage linearity in the rapid passage of current, the lack of fine technical means of compensation technology, in the scale of production capacity to do without strobe is very difficult.

4) LED filament lamps can be replaced by ordinary incandescent lamps with E27 and E14 screw heads, or you can choose a local standard lamp head according to your needs.

Classification of LED filament lamps

1)The housings are available in different shapes and colors.

Usually LED filament bulb housings can be classified according to color as transparent, opal gold, silver plated etc., and according to shape they can be divided into A series, G series, ST series, T series and irregular series. The different shapes and specifications add to the sense of fun and ambience of the decoration in many scenes.

2)There are soft and hard light bars, and the main differences are as follows.

Soft Light Bar

Soft strips are LED chips soldered on flexible circuit boards and installed on the back in the form of adhesive backing on the required occasions. And according to the different applications and environmental illumination requirements, the surface treatment can be divided into waterproof treatment and non-waterproof treatment.

Hard Strip

The hard strip is based on the soft strip in order to better solve the problem of heat dissipation, and the use of SMD led welding on the aluminum substrate, so that the LED in the long working conditions can get good heat dissipation treatment and according to the actual installation and heat dissipation requirements to add aluminum groove, in order to facilitate the installation at the same time to increase the area of heat dissipation.

I believe that through the above introduction, you must have a better understanding of the composition and classification of filament lamp products. At the same time, Homebest has several series of LED filament lamps for you to purchase and choose from, with reliable quality. If you have any questions, please feel free to contact us directly or visit our website: www.hbsocket.com