A novel stepless illumination fluorescent light source

I. Overview

At present, whether in the family, shopping malls, conference halls, office areas, hotels, some people like to install a large number of barrel lights on the top of the top, the barrel lights are equipped with small energy-saving lamps. Because the barrel lights are close to each other, one is set less than 0.5 meters. People look up and look at them, just like seeing the stars on the roof, so the image is called "full." Stars." This kind of lighting is becoming popular everywhere. It represents a way of life, a fashion, and a future lighting concept.

The benefits of the "Giant Star" lighting method are: the light is evenly illuminated, and the human eye is very comfortable. Compared to a single high-powered light, it is both good-looking and does not cause irritation to the human eye. The whole lighting place is warm and welcoming. Sweet, intoxicating and extremely comfortable.

Second, "Giant Star" new light source

Nowadays, the light source of the barrel lamp is mostly a small-diameter spiral energy-saving lamp with a small wattage. Compared with the original use of incandescent lamp and xenon lamp, it is undoubtedly a huge improvement to select a thin-diameter spiral energy-saving lamp. However, energy-saving lamps are not the best choice for the light source required for this type of illumination. A matching light source that is very suitable for "starry" lighting mode - a new type of column-shaped integrated high-frequency electrodeless lamp has been successfully developed, it will replace this A spiral-shaped energy-saving lamp with a small diameter is the most suitable matching light source for this type of illumination.

Third, the advantages of new light sources

What are the advantages of the new column-shaped integrated high-frequency electrodeless lamp compared to the spiral-shaped energy-saving lamp with a small diameter?

1 longer life. In many places, because the roof is relatively high, changing the lamp every time is a very difficult job, so the extension of the life of the light source is essential to reduce the cost of manual maintenance. In general, the service life of energy-saving lamps is difficult to exceed 3,000 hours, and working in the barrel lamps is not conducive to the life of energy-saving lamps. The newly developed columnar integrated high-frequency electrodeless lamp can easily reach more than 20,000 hours.

2 More energy efficient. The new columnar integrated high-frequency electrodeless lamp has more energy-saving effects because the light efficiency can reach 80 lm/W or more. The thin-diameter spiral energy-saving lamp is limited by its structure and processing factors, and the luminous efficiency is within 60 lm/W. The actual illuminance test proves that the illuminance of a 10W new column-shaped integrated high-frequency electrodeless lamp is equivalent to that of a 15W-20W thin-diameter spiral energy-saving lamp.

3 light decay is small. Since the new column-shaped integrated high-frequency electrodeless lamp has no filament electrode inside, it will not be like the energy-saving lamp. When the filament inside the tube is lit, it will sputter off and contaminate the phosphor, causing the black tube blackhead of the energy-saving lamp to quickly make Energy-saving lamps have a life-threatening life that is too early. According to the rigorous life test, the electrodeless lamp can maintain a good light level of more than 85% after 20,000 hours of operation.

4 has greater applicability. The outer diameter of the new column-shaped integrated high-frequency electrodeless lamp body of 5W~20W is Φ22mm, which is very slender and has a beautiful appearance. The outer diameter of the new columnar integrated high-frequency electrodeless lamp body of 25W~45W is only Φ35mm, which is very suitable for use in the barrel lamp; its appearance is shown in Figure 1, which is the outline drawing of the new column-shaped integrated high-frequency electrodeless lamp. The top part of Figure 1 is the screw connector of E27, which is convenient for connection with 220V mains. The inside of plastic parts is the place where electronic components are installed. There are 6 heat dissipation holes at the top of plastic parts, which are convenient for lamp and circuit. The heat is radiated outward. The outer surface of the plastic part is sprayed with conductive paint, which is beneficial to improve the EMC index of the whole lamp. The outer diameter of the lamp body is Φ22mm and the length is 80mm long. A coupler that emits electromagnetic waves is fixed in the lamp body. Compared with the spherical induction lamp, its smallest bubble outer diameter is above Φ56mm, as shown in Figure 2, such a large size can not be installed into some barrel lamp fixtures, of course, limiting the use of bulb-type electrodeless lamps.

5 better electrical performance and higher technical indicators. Using the latest design concept and the latest high-performance new components and original design, it can effectively block the external electromagnetic interference generated by the 2.65MHz electromagnetic wave through radiation and conduction, and at the same time reduce the temperature of the whole lamp and stabilize the electrodeless lamp. Long-term operation, truly realize the dream of high energy-saving long-life lighting that we have been pursuing.

6 lower sales price. In order to carry out PK with the spiral-shaped energy-saving lamps with small diameters, it is intended to implement a low-margin strategy for the new column-shaped integrated high-frequency electrodeless lamps, and compete for this vast market with good quality and low price, requiring the two to be in the same lamp. At the time of power, the price difference does not exceed 20 yuan. If you imagine the high profit of a single piece, the final result is to destroy yourself in this very promising market. Some special measures have been taken for this purpose: 1) Screening and analysis of each component and adhesive in the lamp, and selecting a more suitable and cheaper alternative or canceling it. For example, without using silicone rubber as a bonding agent, the cost can save at least 0.6∽0.9 yuan; 2) establish its own sales channels; 3) rely on large-volume and high-efficiency industrial production, and adopt as much mechanization, standardization and specialization as possible. The production method reduces the production cost and improves the work efficiency; 4) Abandoning the obsolete obscurity and re-directing the design of the integrated high-frequency electrodeless lamp with a new theory. For example, replacing the iron powder core magnetic material that has been used in the output choke coil with a new type of excellent magnetic material can not only reduce the purchase cost of the choke coil by half, but also improve the electrical performance of the circuit; Double-faced printed circuit boards, which cost a reduction of 1.3 yuan. 5) The key power device - FET, selected from 4N60, ​​252 package, the reason is: 252 package can be directly soldered on the printed board copper foil, the heat dissipation performance is good; 252 package is relatively small, which is beneficial to the miniaturization of the whole lamp 4N60 is suitable for a variety of different lamp power use, easy to purchase and stock; 252 package is 0.1 yuan / support cheaper than TO-220F.

7 has better operational stability and reliability. The shape of the new column-shaped integrated high-frequency electrodeless lamp is cylindrical and adopts a working frequency of 2.65MHz. At present, the circuit of this working frequency is relatively mature. It is approved by the International Electrotechnical Organization and is also a dedicated electrodeless lamp operating frequency in line with China's national standards. In order to maximize the advantages of the electrodeless lamp, we are actively preparing for the production of a new columnar integrated RF electrodeless lamp with a higher operating frequency. Shown below is a sample of a prototype glass tube, Φ22mm*90mm, with a Φ12mm full-empty tube in the middle. In order to be able to see clearly, the inner wall of the glass tube is not sprayed with phosphor. Why use a glass tube of this shape to make the light? The reason is very simple: it is to improve the light efficiency of the light source and enhance the heat dissipation capability of the light tube.

The glass bulb of the new columnar integrated induction lamp is shown in Figure 3 below:

4. Analysis of structural characteristics of new columnar integrated induction lamp

How to get high light efficiency and improve the heat dissipation of the lamp? We have taken several important measures:

1 Use a cylindrical tube as shown in Figure 4 below:

As can be seen from the figure, for the new column-shaped integrated high-frequency electrodeless lamp on the right side, its lamp shape is cylindrical, and the hollow tube is vertically transparent in the middle, and the emission composed of the magnetic tube and the coil is arranged therein. Antenna, some people call it a coupler. This transmitting antenna is characterized by being parallel to the outer tube wall. The electromagnetic wave emitted by the transmitting antenna can immediately activate the amalgam (metal mercury) to produce 273.5nm ultraviolet light. The shortest path is combined with the phosphor on the outer tube wall to generate visible light. The left bulb type electrodeless lamp can be seen that the distance between the coupler and the outer tube wall is far and uneven. After the ultraviolet light is generated, some photons may not immediately react with the phosphor on the outer tube wall. If the ultraviolet photon cannot be combined with the phosphor for a limited time, the ultraviolet light will be quenched by itself, and the ultraviolet light will be wasted.