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Electrodeless induction discharge type low pressure sodium lamp

A low-pressure sodium lamp, electrodeless technology, applied in the direction of discharge lamps, gas discharge lamp parts, circuits, etc., to avoid power loss, increase luminous efficiency, ensure stability and life

Inactive Publication Date: 2014-04-30
江苏立德照明产业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the luminous efficiency of current electrodeless lamp products is completely limited by the ultraviolet (253.7nm) excitation efficiency of mercury and the conversion efficiency of phosphors (such as tricolor phosphors). The luminous efficacy of the light source is between 70lm / W-100lm / W, and there is no theoretical possibility of further increase

Method used

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  • Electrodeless induction discharge type low pressure sodium lamp
  • Electrodeless induction discharge type low pressure sodium lamp
  • Electrodeless induction discharge type low pressure sodium lamp

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0045] The electrodeless induction discharge low-pressure sodium lamp of the first embodiment has a built-in magnetic core structure, figure 2 Shown is the lamp tube 10 of the low-pressure sodium lamp of the first embodiment, the lamp tube 10 is in the shape of a bulb, and the bulb-shaped lamp tube 10 is surrounded by a cavity space 11 . combine figure 2 and image 3 , the magnetic core 12 is inserted into the cavity space 11 .

[0046] still combined figure 2 and image 3 , the magnetic core 12 can be a long straight cylinder, and one or more magnetic cores 12 can be inserted into the cavity space 11 in the bulb-shaped lamp tube 10 . The magnetic core 12 itself is wound around the wire, and the induced magnetic field induced by the magnetic core 12 then excites the induced electric field in the bulb-shaped lamp 10, and then induces the elemental sodium element in the bulb-shaped lamp 10 to stimulate discharge, forming a stable discharge loop.

[0047] Wherein, the bu...

no. 2 example

[0050] The electrodeless induction discharge low-pressure sodium lamp of the second embodiment has a built-in magnetic core structure, Figure 5 The lamp tube 20 of the low-pressure sodium lamp of the second embodiment is shown, the lamp tube 20 is spiral, and the spiral lamp tube 20 surrounds a cavity space. combine Figure 5 and Figure 6 , the magnetic core 22 is inserted into the cavity space surrounded by the spiral lamp tube 20 .

[0051] Furthermore, a single long straight glass tube can be U-shaped, and then spirally bent to form a spiral lamp tube 20, which is similar in shape to the lamp tube of the current spiral energy-saving lamp. Wherein, the diameter of the single long straight glass tube is 4mm-40mm, and the length after bending is between 0.1m and 1m. The cylindrical magnetic core 22 is inserted into the cavity space of the spiral lamp tube 20 to form an induced electric field coupled in the spiral bend tube, and its induction method is basically similar to...

no. 3 example

[0055] refer to image 3 , The electrodeless induction discharge low-pressure sodium lamp of the third embodiment has an external magnetic core structure. As a non-limiting example, the shape of the lamp tube 30 is a ring-shaped tube, and the ring-shaped tube 30 is sleeved with a magnetic core 32 of a circular magnetic ring structure. Furthermore, the structural matching can be carried out in the form of a ring-shaped magnetic ring sleeved on the ring-shaped pipeline, wherein the ring-shaped magnetic ring generates a coupling magnetic field from an outer winding coil, and forms an induced electric field in the lamp tube 30, and the induced electric field couples the lamp The elemental sodium element in the tube 30 emits light and discharges.

[0056] Wherein, the total loop length of the lamp tube 30 is mainly determined by the power, for example, it may be between 10 cm and 100 cm. The diameter of the lamp tube 30 is between 4mm and 40mm. The cross-sectional area of ​​the ...

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Abstract

The invention provides an electrodeless induction discharge type low pressure sodium lamp. The electrodeless induction discharge type low pressure sodium lamp comprises a lamp tube and a magnetic core, wherein the lamp tube is filled with simple substance sodium elements, a coil is wound around the magnetic core to generate an induction electromagnetic field, and the induction electromagnetic field is coupled with the simple substance sodium elements inside the lamp tube to emit light and discharge electricity. According to the electrodeless induction discharge type low pressure sodium lamp, the induction electromagnetic field is coupled with the sodium elements to emit light and discharge electricity, an additional electrode is not needed, the service life of the low pressure sodium lamp is largely prolonged, and the stability of long-time use of the low pressure sodium lamp is largely improved.

Description

technical field [0001] The invention relates to an electrodeless induction discharge low pressure sodium lamp. Background technique [0002] As a long-life, maintenance-free, high-efficiency and high-color-rendering lighting product, the electrodeless lamp has been widely accepted by domestic and international markets. The conventional electrodeless lamp is an electric light source product that emits light and discharges by inductively coupling the mercury element in the lamp tube. A conventional electrodeless lamp emits electromagnetic waves in the radio frequency range through a high-frequency magnetic core, couples and excites mercury atoms in the lamp tube, and then the 253.7nm ultraviolet rays emitted by the mercury atoms can effectively excite the light of the three primary colors or other spectral components for illumination. Since the electrodeless lamp itself has no electrodes, it can guarantee its long-term (usually up to 5 years or more) stable use and no need fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J65/04H01J61/30H01J61/22
Inventor 李文鹏李维德
Owner 江苏立德照明产业有限公司