Amalgam temperature control device for electrodeless lamp

Abstract

The invention discloses an amalgam temperature control device for an electrodeless lamp. The device comprises an electronic ballast for driving a light source of the electrodeless lamp, and an exhaust pipe arranged on a tube of the electrodeless lamp, wherein amalgam is filled in the exhaust pipe; the exhaust pipe is sleeved with a magnetic ring; electromagnetic induction coils are wound on the magnetic ring; and high-frequency current output by the electronic ballast passes through the electromagnetic induction coils. By adopting the structure, the device has the advantages that: 1, the temperature of the amalgam is effectively controlled by using a principle that high-frequency eddy current of the magnetic ring is used for heating, so that the amalgam is in an optimal temperature state, the tube can work at the optimal working temperature, and the luminous efficiency of the tube is improved, particularly the luminous efficiency at a low temperature; and 2, the starting performance of the electrodeless lamp at a low temperature can be enhanced, the starting time of the eletrodeless lamp can be reduced, the phenomena such as darkening and the like caused by indium amalgam can be avoided, so that the optical attenuation of the tube can be reduced, the service life of the tube is prolonged, and the performance of the tube is further improved.

Description

technical field [0001] The invention relates to the technical field of electric lighting, in particular to an amalgam temperature control device for an electrodeless lamp. Background technique [0002] The electrodeless fluorescent lamp is a new type of electric light source based on the combination of the well-known low-pressure gas discharge and high-frequency electromagnetic induction principles. Because it does not have the filament or electrode necessary for conventional electric light sources, it is called electrodeless fluorescent lamp, or electrodeless lamp for short. It is a kind of fluorescent lamp. The principle of the induction lamp is that after inputting a certain range of power supply voltage, the high-frequency signal generated by the high-frequency generator of the ballast is transmitted to the coil wound on the annular magnetic core, so that a closed induction magnetic field is formed inside the magnetic core, and further in the lamp A circular electric f...

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Problems solved by technology

3. Small viscosity and high fluidity, it is easy to break into small mercury beads, which are stored in the gaps of the workbench and the ground everywhere, which is not only difficult to remove, but also increases the surface area and evaporates in large quantities, forming a secondary pollution source

4. Mercury vapor is adsorbed on the surface of the ground, workbench, wall and ceiling, etc. Sometimes, the mercury workshop is used for other purposes, and there is still a problem of mercury hazards

It is impossible to keep the power of the lamp tube constant when the ambient temperature changes, so the luminous flux cannot be constant, which affects the luminous efficiency of the lamp tube

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