CN204927240U - Electrodeless radio frequency plasma bulb - Google Patents
Electrodeless radio frequency plasma bulb Download PDFInfo
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- CN204927240U CN204927240U CN201520419670.7U CN201520419670U CN204927240U CN 204927240 U CN204927240 U CN 204927240U CN 201520419670 U CN201520419670 U CN 201520419670U CN 204927240 U CN204927240 U CN 204927240U
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Abstract
The utility model discloses an electrodeless radio frequency plasma bulb, have closed cavity's foam in including, foam internal cavity both ends terminal surface sets up to the prominent structure in cavity inside, is provided with luminescent substance in the foam internal cavity, and it has noble gas still to fill in the foam internal cavity. The utility model discloses prolonged the life -span of bulb greatly, the grading efficiency of lamps and lanterns is very high to improve the luminous efficacy of whole lamps and lanterns greatly, can carry out reasonable regulation to color rendering index, light efficiency and colour temperature on a large scale, simple structure, small, power is big, and is with low costs, the mass production of being convenient for.
Description
Technical field
The utility model relates to radio frequency plasma lighting field, specifically a kind of electrodeless radio frequency plasma bulb.
Background technology
All there is electrode structure in current existing conventional illumination sources, such as fluorescent lamp, Metal halogen lamp, sodium vapor lamp etc., and these lamps are after working long hours, and sealing place of electrode and glass is very easy to produce gas leak phenomenon, result in the shortening of bulb life.In addition, electrode material can volatilize after long-time hot operation, is attached in bulb inner wall after volatilization, bulb inner wall can be made to turn black, affect the light transmission of bulb, and cause the light decay of bulb comparatively large, luminous efficiency reduces greatly.Meanwhile, due to the existence of electrode, the material of filling in bulb just can not react with electrode, which limits the selection of filling element in bulb, so the color rendering index of conventional illumination sources, and the room for promotion that light efficiency etc. are not larger.
In recent years, in forth generation light source, the development of LED is very fast, and the theoretical life-span can reach 50,000 hours, but to so far, LED can only be applied to indoor or the less place of other power mostly.In high-power illumination field, because the power conversion up to more than 70% in the electric energy that LED consumes is heat energy, heat radiation pressure is comparatively large, and the temperature rising that these heats bring can cause light decay that LED is larger and the shortening in life-span.
Radio frequency electrode-less plasma lamps is steeped, and owing to there is not electrode structure, has the advantages such as the life-span is long, light decay is little, light efficiency is high, adjustable color, is with a wide range of applications.Wherein, the design of bulb is the core of plasma lamp, and it has been directly connected to the key parameter such as luminous efficiency, colour temperature and development index of bulb.
utility model contentthe purpose of this utility model is to provide a kind of electrodeless radio frequency plasma bulb, to solve prior art Problems existing.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of electrodeless radio frequency plasma bulb, the transparent foam of enclosed cavity is had in comprising, it is characterized in that: the interlude of foam internal cavity is cylindrical hollow configuration, the two ends of foam internal cavity are hemispherical hollow structure, and foam internal cavity two ends end face is set to the raised structure of cavity inside, be provided with luminescent substance in foam internal cavity, in foam internal cavity, be also filled with rare gas.
Described one is electrodeless radio frequency plasma bulb, is characterized in that: the bubble wall of described foam adopts transparent quartz glass or translucent ceramic material.
Described one is electrodeless radio frequency plasma bulb, is characterized in that: described luminescent substance is made up of the halide of one or more metallic elements, the bromide of preferable alloy element or iodide.
Described one is electrodeless radio frequency plasma bulb, is characterized in that: described luminescent substance is shaped to pill shape or graininess.
Described one is electrodeless radio frequency plasma bulb, is characterized in that: described rare gas is one or more combinations in helium, neon, argon, krypton, xenon-133 gas.
Described one is electrodeless radio frequency plasma bulb, is characterized in that: described foam internal cavity two ends end face is set to plane.
Described one is electrodeless radio frequency plasma bulb, is characterized in that: the one-sided outer end of described foam or outer end, both sides are connected with solid quartz glass post.
Electrodeless radio frequency plasma bulb employing frequency is that the radio-frequency (RF) energy between 50MHz to 5GHz encourages, and the high electric field utilizing radio-frequency (RF) energy to be formed excites the gas ionization of bulb, forms high-density plasma luminous.Wherein, higher rf frequency is conducive to the lifting of bulb luminescence of plasma brightness.Radio-frequency power in input bulb is between 50 watts to 3 kilowatts.
Electrodeless radio frequency plasma bulb itself does not comprise any metal electrode, is not connected with any metal electrode yet.
The utility model has the following advantages: (1), owing to there is not electrode structure, thus do not have the sealing leakage problem of electrode and glass, substantially prolongs the life-span of bulb, the life-span can reach more than 50000 hours; Do not have electrode to volatilize the optical attenuation caused, after working long hours, still can keep higher luminous flux yet.(2) volume is little, is real point-source of light, and the luminous intensity distribution efficiency of light fixture is very high, thus substantially increases the luminous efficiency of overall light fixture.(3) luminescent substance does not need the chemical reaction considering filling element and electrode, can fill multiple luminescent substance, therefore, can reasonably regulate color rendering index, light efficiency and colour temperature on a large scale in bulb.(4) structure is simple, and volume is little, and power is large, and cost is low, is convenient to produce in enormous quantities.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the electrodeless radio frequency plasma bulb of the utility model first embodiment.
Fig. 2 is the profile of the electrodeless radio frequency plasma bulb of the utility model first embodiment.
Fig. 3 is the structural representation of the utility model second embodiment.
Fig. 4 is the cutaway view of the utility model second embodiment.
Embodiment
As Figure 1-Figure 4, a kind of electrodeless radio frequency plasma bulb, the transparent foam of enclosed cavity is had in comprising, the interlude of foam internal cavity 2 is cylindrical hollow configuration, the two ends of foam internal cavity 2 are hemispherical hollow structure, and foam internal cavity 2 two ends end face is set to, to the structure 4 of cavity 2 inner projection, be provided with luminescent substance 3, be also filled with rare gas in foam internal cavity 2 in foam internal cavity 2.
The bubble wall 1 of foam adopts transparent quartz glass or translucent ceramic material.
Luminescent substance 3 is made up of the halide of one or more metallic elements, the bromide of preferable alloy element or iodide.
Luminescent substance 3 is shaped to pill shape or graininess.
Rare gas is one or more combinations in helium, neon, argon, krypton, xenon-133 gas.
Foam internal cavity two ends end face is set to plane 7.
The one-sided outer end of foam or outer end, both sides are connected with solid quartz glass post 5,6.
As depicted in figs. 1 and 2, the electrodeless radio frequency plasma bulb of the utility model first embodiment, bubble wall 1 adopts transparent silica glass material, also the high temperature ceramic materials such as aluminium oxide can be adopted, by completely closed for the gas in one section of cavity 2, exemplarily, cavity 2 inside arranges the luminescent substance 3 of pill shape, as shown in Figure 2, the interlude of bulb cavity 2 is cylindrical hollow configuration, two ends are hemispherical hollow structure, and the two ends of bulb internal cavity 2 have the end face structure raised to cavity inside 4.This inner projection structure 4, when being conducive to improving bulb work, the temperature of cold junction, improves the luminous efficiency of lamp and the color rendering of radiation spectral line.As main luminescent substance, luminescent substance 3 can be nonmetalloid and the mercury such as selenium, sulphur, tellurium, certainly, also can fill the halide of one or more metallic elements, to improve the characteristics of luminescence of bulb, regulates spectrum and the color rendering index of bulb.In using, the halide of metallic element generally selects bromide or the iodide of metallic element, such as silver iodide, gallium bromide etc.When the making of lamp, luminescent substance 3 is loaded in the closed cavity 2 of quartz glass with graininess, and when lamp is lighted, pill can flash to gas or plasma, is full of whole cavity, and when lamp extinguishes, luminescent substance 3 pulverize powder is attached in bulb inner wall.Fill rare gas in cavity 2, this rare gas is one or more combinations in the gases such as helium, neon, argon, krypton, xenon, protective gas when working as luminescent substance, and does not react with light-emitting element simultaneously.Quartz glass cylinder 5 and 6 is one section of elongated glass bar, is connected with the hemisphere glass cell-shell of bulb side, for the installation when operation during sealing-in of bulb gas and bulb work.In the present embodiment, the external diameter of bulb mediate cylindrical is 12mm, and length is 10mm, and wall thickness is 2mm, and in using, the radio-frequency power that this bulb absorbs is more than 100W.
As shown in Figure 3, Fig. 4 is its cut-away view to the shape assumption diagram of second embodiment of the utility model is electrodeless radio frequency plasma bulb.One end of this example bulb only comprises an elongated glass bar handle, and the other end is hemisphere glass cell-shell.Bubble wall 1 adopts transparent silica glass material equally, gas in cavity 2 is completely closed, cavity 2 inside arranges the luminescent substance 3 of pill shape, as shown in Figure 4, the interlude of bulb cavity 2 is cylindrical hollow configuration, two ends are hemispherical hollow structure, and first embodiment unlike, the two ends of bulb internal cavity 2 have end face plane 7.Quartz glass cylinder 5 is one section of elongated glass bar, is arranged on one end of bulb hemisphere glass cell-shell, for the installation when operation during sealing-in of bulb gas and bulb work.The pill of filling in bulb is identical with first embodiment, and blanketing gas is the xenon of 450Torr, when the rf electric field that bulb is subject to 2.45GHz excites, sends bright white light.
In above two embodiments, the electric field that frequency produces for the radio-frequency (RF) energy between 50MHz to 5GHz can be utilized, make its center of electric field in bulb, or concentrate near the hemispherical dome structure of bulb one end, gas ionization in the radio-frequency alternating current electric field breakdown cavity of high strength, stimulated luminescence material electric discharge subsequently, forms the point-source of light of high brightness.Whole bulb does not comprise any metal electrode, does not have the leakage problem of metal electrode and glass sealed knot, substantially prolongs the useful life of bulb, reduces optical attenuation, and meanwhile, the power of lamp is large, and volume is little, reduces the difficulty of production technology and the cost of lamp.
Claims (5)
1. an electrodeless radio frequency plasma bulb, the transparent foam of enclosed cavity is had in comprising, it is characterized in that: the interlude of foam internal cavity is cylindrical hollow configuration, the two ends of foam internal cavity are hemispherical hollow structure, and foam internal cavity two ends end face is set to the raised structure of cavity inside, be provided with luminescent substance in foam internal cavity, in foam internal cavity, be also filled with rare gas.
2. the electrodeless radio frequency plasma bulb of one according to claim 1, is characterized in that: the bubble wall of described foam adopts transparent quartz glass or translucent ceramic material.
3. the electrodeless radio frequency plasma bulb of one according to claim 1, is characterized in that: described luminescent substance is shaped to pill shape or graininess.
4. the electrodeless radio frequency plasma bulb of one according to claim 1, is characterized in that: described foam internal cavity two ends end face is set to plane.
5. the electrodeless radio frequency plasma bulb of one according to claim 1, is characterized in that: the one-sided outer end of described foam or outer end, both sides are connected with solid quartz glass post.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419670.7U CN204927240U (en) | 2015-06-17 | 2015-06-17 | Electrodeless radio frequency plasma bulb |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520419670.7U CN204927240U (en) | 2015-06-17 | 2015-06-17 | Electrodeless radio frequency plasma bulb |
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| CN204927240U true CN204927240U (en) | 2015-12-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952690A (en) * | 2015-06-17 | 2015-09-30 | 单家芳 | Electrodeless radio frequency plasma bulb |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952690A (en) * | 2015-06-17 | 2015-09-30 | 单家芳 | Electrodeless radio frequency plasma bulb |
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