SU1635229A1 - Gaseous-discharge non-electrode lamp - Google Patents

Abstract

The invention relates to the electrical industry, in particular to high-frequency electrodeless fluorescent lamps. The aim of the invention is to increase the light output while expanding the field of application. The electrodeless gas discharge lamp contains a microwave generator 1 and a cylinder 2 consisting of two parts. Each part consists of an outer shell and an inner shell having a protrusion in the shape of a paraboloid of rotation 3. The inductor 4 with a dielectric coil 5 has a partition 6. The metal heat sink rim 7 is connected to the microwave generator 1. The inner walls of the parts of the balloon 2 are coated with phosphor 9 Space 10 is filled with an ionizing medium. The front and rear sides of the parts of the cylinder 2 are interconnected by fusible plastic in the line of their docking to form a discharge space 10 between them. partition 6 coil 5 and connected in parallel. 1 hp f-ly. 1 il.

Description

The invention relates to the electrical industry and can be used in the manufacture of electrical light sources, such as high frequency electrodeless fluorescent lamps,

The aim of the invention is to increase the light output of the lamp while expanding the field of application.

The drawing shows an electrodeless discharge tube of the lamp, a longitudinal section.

The electrodeless gas discharge lamp consists of a microwave power source 1 enclosed in a metal case and a cylinder 2. The cylinder 2 consists of two parts, the outer shell is made in the form of a glass with outer flanging. The inner shell of the balloon consists of a cylindrical part with flanges connected by a paraboloid of rotation 3. The inductor 4 is located on a dielectric coil 5. having partitions 6. The flanges of the outer shells are covered by metal heat sinks 7. On the paraboloids of rotation 3 are located pumped dies 8.

The inner walls of the balloon are coated with phosphor 9. Space 10 is filled with an ionizable medium consisting of Os GJ SP

go go you

example, from mercury vapor and inert argon gas. Under the phosphor on the inner surface of the rear sides of the balloon 2 is applied an electrically insulating material that reflects ultraviolet and visible light, for example, magnesium oxide or zirconium dioxide.

The manufacture of the lamp proposed is as follows.

Separately, cylindrical cup-shaped front and rear sides of the parts of the cylinder 2 are stamped, on which a reflective coating and a phosphor are subsequently applied, except for the places of their mutual joining. Then, in pairs, they are hermetically connected using a low-melting glass mass or simply brewed like headlamps in a press shell. After pumping and filling, the pin 8 is sealed off. Two windings of the inductor 4 are wound on the dielectric coil 5 on both sides, which are connected in parallel. The current leads are located in the recess of the partition 6. The inductor 4 with the dielectric coil 5 is placed so that the paraboloids of rotation 3 enter the inside of the coil 5 from both its ends. The front sides of the parts of the cylinder 2 are pressed against the partition 6 of the coil 5 by the heat sink rim 7 connected to the case of the microwave generator 1.

When applied from a microwave generator to a voltage inductor 4 with a frequency of 5.28-27 MHz, the alternating magnetic flux induces an electric field. Its lines of force are closed circles, concentric with coils. This electric field excites in space the Ytoroidal plasma, which causes the luminophore to emit high efficiency. Since inside the coil 5 the concentration of force magnetic lines is higher than on the outside, a stronger luminescence of the phosphor will be excited in the space of paraboloids 3. Taking into account the shape of the curvature and the paraboloid and the presence of a reflective coating under the phosphor layer, the front surfaces of the parts of the cylinder 2 will shine more brightly than the side surfaces. Due to such a constructive solution, the light output of the lamps is increased by 12-20%. During operation, the inductor 4 and the coil 5 are heated up strongly, so the latter is made of a dielectric with a high thermal conductivity, for example, a polycore. And along the entire circumference of the partition 6 it touches the rim 7, transferring the heat of the coil 5 to the surrounding

Wednesday The constructive solution of the proposed lamp allows to significantly expand the scope of its application. It can be used as a wall sconce, and as

table lamp. In the latter case, turning the lamp to the front or side, you can create the desired level of illumination at the desired location. If in one flask to use a phosphor, exciting a red glow, and in the other a green or other combination, you can get original decorative lighting of the residential interior. If one of the flasks is made of quartz glass and

do not cover the inner surfaces with phosphor, then a source of directed ultraviolet radiation can be obtained, using it for medical purposes while ensuring the necessary measures

precautions, and turning the other side, to have an ordinary table lamp. Such a constructive solution allows to obtain a positive effect from the use of the proposed invention.

Claims (2)

Invention Formula 1, An electrodeless gas discharge lamp containing a cylinder filled with ionizing medium of translucent material with a phosphor on the inner surface and connected to a microwave power source a cylindrical inductor mounted on a dielectric coil, so as to increase light output while expanding application areas, the cylinder consists of two parts, each which is formed by an outer shell made in the form of a glass with outer flanging on the side opposite to its base, and an inner shell consisting of a cylindrical part with 5 outer flanging, connected by flat sections with a paraboloid of rotation, flanging each of these parts of the container are tightly interconnected, the tops of the paraboloids of rotation and The indicated flanging of the shells of different parts of the cylinder are facing one another, the inductor is installed between the cylindrical parts of the shells and paraboloids coaxially with them, and the dielectric coil in the middle part is made with a partition perpendicular to its axis and separating the inductor into two parts inner shells, and flanging the outer shells are covered by the additionally introduced metallic a heat sink rim in contact with the end flanging surfaces and the indicated partition. 2. The lamp according to claim 1, wherein the two parts of the inductor are interconnected in parallel.