EP4052281A2 - Système de lampe à plasma - Google Patents

Système de lampe à plasma

Info

Publication number
EP4052281A2
EP4052281A2 EP20811525.3A EP20811525A EP4052281A2 EP 4052281 A2 EP4052281 A2 EP 4052281A2 EP 20811525 A EP20811525 A EP 20811525A EP 4052281 A2 EP4052281 A2 EP 4052281A2
Authority
EP
European Patent Office
Prior art keywords
lamp
volume
housing
plasma
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20811525.3A
Other languages
German (de)
English (en)
Inventor
Boris Lutterbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP4052281A2 publication Critical patent/EP4052281A2/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
    • H01J65/044—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by a separate microwave unit

Definitions

  • the invention relates to a plasma lamp system with a lamp housing and a luminous means, the lamp housing enclosing a lamp volume, the luminous means being arranged within the lamp volume, the luminous means being excitable by means of microwave radiation to emit electromagnetic radiation, one housing wall of the lamp housing having an irradiation section through which the microwave radiation can be radiated into the lamp volume in such a way that the lighting means is excited to emit electromagnetic radiation, the lamp housing having a shielding arrangement and the shielding arrangement being adapted to the microwave radiation so that the microwave radiation is propagated through the shielding arrangement is prevented through.
  • Such plasma lamp systems are particularly suitable for generating electromagnetic radiation in the form of light.
  • the luminous means usually has a luminous gas which is enclosed by a glass body and which can be converted into a plasma state by means of the microwave radiation.
  • the luminous gas which is converted into the plasma state, emits electromagnetic radiation whose spectrum is similar to that of daylight.
  • the light that can be generated by such plasma lamp systems is special suitable for illuminating biological systems such as aquariums, terrariums, plantations or the like.
  • Plasma lamp systems are particularly characterized by the fact that the lighting means reaches a relatively high temperature during operation. This is particularly necessary in order to convert the luminous gas into its plasma state.
  • the luminous means can come into operative connection with gas molecules in an atmosphere surrounding the plasma lamp system. The resulting heat losses in the illuminant lead in particular to the fact that the power of the microwave radiation has to be increased in order to keep the illuminating gas in its plasma state and the efficiency of the plasma lamp system is reduced.
  • Microwave radiation that is introduced into the illuminant can also come into operative connection with those atmospheric gas molecules that are arranged between a microwave source and the illuminant.
  • the oxygen contained in the atmosphere has a disadvantageous effect, since it can be converted into ozone by the microwave radiation, with ozone exhibiting a large number of undesirable properties when interacting with living tissue.
  • this object is achieved in that the lamp volume is sealed and / or can be sealed gas-tight by the lamp housing from an external gas volume which is arranged outside the lamp housing.
  • Such a configuration of the plasma lamp system according to the invention minimizes an interaction between the lighting means heated by the microwave radiation and the external gas volume. In particular, a heat transfer from the lighting means to the external gas volume can be minimized as a result.
  • the lamp housing can be designed in such a way that thermal insulation properties of the lamp housing are increased.
  • the lamp housing can, for example, have a double-walled design. It is advantageously provided that between a first wall and a second wall of a double-walled lamp housing
  • Isolation medium can be arranged.
  • Media that have a particularly low thermal conductivity for example air, aerogels, vacuum or the like, are regarded as insulation media in the sense of the concept of the invention.
  • Medium means in particular solids, gases and liquids, but also vacuum.
  • the lamp housing has a pressure valve, the lamp volume being able to be brought into and out of operative connection with a pressure reservoir and / or with the external gas volume, so that a gas pressure of a filler gas that is formed in the lamp volume can be changed and / or or the lamp volume can be evacuated.
  • the filling gas can be exchanged by means of the pressure valve, for example by first pumping out a filling gas arranged in the lamp volume and then replacing it with another type of filling gas, the additional filling gas preferably having a lower thermal conductivity than the filling gas .
  • the pressure valve is particularly preferably designed in such a way that it seals the lamp volume when a negative pressure or a vacuum is formed in the filling gas.
  • suppressed means that the gas pressure of the filling gas is lower than an ambient pressure of the external gas volume.
  • An advantageous embodiment of the invention provides that the filling gas arranged in the lamp volume is low Has gas pressure than the external gas volume.
  • Such a configuration of the plasma lamp system according to the invention can reduce the heat transport from the lighting means to the lamp housing.
  • the filling gas can be a gas with a particularly low thermal conductivity, for example xenon.
  • a filling gas instead of a vacuum is particularly advantageous if the creation of a vacuum in the lamp volume is associated with a disproportionately high effort, for example because the wall of the lamp housing has to be adapted to the vacuum.
  • vacuum means that a gas pressure of less than 300 millibars is formed in the lamp volume. The lower the gas pressure that is formed in the lamp volume, the lower the heat transport from the lighting means to the lamp housing.
  • the shielding arrangement is arranged at least in sections between the lamp volume and the external gas volume, the shielding arrangement minimizing electromagnetic interaction between gas molecules of the external gas volume and the microwave radiation.
  • Such a configuration of the plasma lamp system according to the invention can advantageously achieve that the formation of ozone can be minimized.
  • the shielding arrangement is particularly preferably designed and arranged between the lamp volume and the external gas volume so that the microwave radiation acts exclusively within the lamp volume and the electromagnetic interaction between gas molecules of the external gas volume and the microwave radiation is prevented.
  • the shielding arrangement is advantageously designed and adapted to the microwave radiation in such a way that a radiation power of leakage radiation from the plasma lamp system at a distance of 5 cm from the shielding arrangement is less than 20 mW / cm 2 , preferably less than 10 mW / cm 2 and particularly preferably less than 5 mW / cm 2 .
  • an advantageous embodiment of the invention provides that the shielding arrangement is formed at least in sections by the lamp housing.
  • the plasma lamp system particularly preferably does not have a separate shielding arrangement, but rather the shielding arrangement is completely integrated into the lamp housing.
  • fully integrated means that the shielding arrangement is not designed as a separate component of the plasma lamp system.
  • the shielding arrangement has to be invisible. It can be formed, for example, by a wire mesh that is arranged within a transparent section of the lamp housing.
  • the lamp housing is made at least in sections from a metal and / or a metal-containing material.
  • the lamp housing is manufactured at least in sections by means of a machining production process, for example by milling, turning, drilling or a similar process.
  • the lamp housing can be manufactured at least in sections by means of a primary forming manufacturing process, for example by casting, sintering or a similar process.
  • the lamp housing can be manufactured at least in sections by means of a forming manufacturing process, for example by pressing, deep-drawing or a similar process.
  • the lamp housing is particularly preferably made at least in sections from aluminum and / or an aluminum alloy.
  • the lamp housing has a transmission section which is made from a transparent material, the transparent material being permeable to electromagnetic radiation. It is particularly preferred that the transparent material is permeable to electromagnetic radiation in the visible spectrum. It is advantageously provided that the transparent material can in particular be glass. It is also advantageously provided that the transmission section can be made of a translucent material.
  • the lamp housing has a shielding element in the transmission section which is impermeable to microwave radiation.
  • the shielding element is particularly preferably a wire mesh made of a metallic material, the properties of the wire mesh and the metallic material being adapted to one another and to the microwave radiation in such a way that the
  • Shielding element for the microwave radiation is impermeable.
  • the lamp housing is constructed in several parts and has at least a first housing part and a second housing part, with at least one sealing element being arranged between the housing parts and with a sealing gap formed between the housing parts being sealed gas-tight by the sealing element .
  • the housings can be fixed to one another by means of a wide variety of connecting elements, for example by means of tension locks, threads, bayonet locks or the like.
  • the sealing element can be, for example, an O-ring, a sealing compound or the like. If the sealing ring is an O-ring, it is advantageously provided that the housing parts in the The area of the sealing gap can have a groove into which the O-ring can be inserted.
  • the at least one sealing element is made at least in sections from an airgel. Aerogels are characterized by particularly good thermal insulation properties, are extremely light and very stable.
  • Figure 1 is a schematically illustrated sectional view of an embodiment of the plasma lamp system according to the invention.
  • FIG. 1 shows a schematically illustrated sectional view of an embodiment of the plasma lamp system 1.
  • the plasma lamp system 1 has a lamp housing 2 and a lighting means 3.
  • the lamp housing 2 encloses a lamp volume 4 within which the illuminant 3 is arranged.
  • the lighting means 3 can be excited by means of microwave radiation 5 to emit electromagnetic radiation 6.
  • a housing wall 7 of the lamp housing 2 has an irradiation section 8 through which the microwave radiation 5 can be irradiated into the lamp volume 4 in order to excite the luminous means 3.
  • the lamp housing 2 also has a shielding arrangement 9.
  • the shielding arrangement 9 is thus connected to the microwave radiation 5 adapted so that the microwave radiation 5 is prevented from propagating through the shielding arrangement 9.
  • the lamp volume 4 is sealed in a gas-tight manner by the lamp housing 2 from an external gas volume 10 which is arranged outside the lamp housing 2.
  • the lamp housing 2 has a pressure valve 11.
  • a pressure reservoir 12 is connected to the pressure valve 11.
  • the pressure valve 11 is designed such that it seals off the lamp volume 4 when the gas pressure formed in the lamp volume 4 is less than or equal to a reservoir pressure that is formed in the pressure reservoir.
  • a vacuum is formed in the illustrated pressure reservoir 12, so that the lamp volume 4 can be evacuated by being brought into operative connection with the pressure reservoir 12 by means of the pressure valve 11.
  • the lamp housing 2 of the plasma lamp system 1 shown is designed in three parts. It has a housing element 13, an irradiation window 14 and a lens element 15.
  • the radiation window 14 is arranged in the radiation section 8 and is transparent to the microwave radiation 5.
  • the irradiation window 14 is inserted into a window recess 16 of the housing element 13 and has a web 17 which runs around the window recess 16 on a side opposite the lamp volume 4, whereby a seal between the irradiation window 14 and an edge region of the window recess 16 is improved in particular, when a vacuum is formed in the lamp volume 4.
  • a radiation seal 18 is arranged, which the Window recess 16 completely surrounds and seals the lamp volume 4 in a gas-tight manner.
  • the housing element 13 has a radiation opening 19 opposite the window recess 16.
  • Emitting opening 19 is closed by lens element 15.
  • a lens seal 20 is arranged which runs around the emission opening 19 and through which the emission opening 19 is sealed in a gas-tight manner.
  • the housing element 13 is made of aluminum and is therefore impermeable to microwave radiation 5.
  • the shielding arrangement 9 is thus formed in the area of the housing element 13 by the housing element 13 itself.
  • the lens element 15 is made from a glass and is transparent to microwave radiation 5.
  • the shielding arrangement 9 is therefore designed as a wire mesh in the area of the lens element 15.
  • the shielding arrangement 9 is an electromagnetic

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

L'invention concerne un système de lampe à plasma (1) comportant un boîtier de lampe (2) et un agent lumineux (3), un volume de lampe (4) étant entouré par le boîtier de lampe (2), l'agent lumineux (3) étant monté à l'intérieur du volume de lampe (4), l'agent lumineux (3) pouvent être activé par rayonnement micro-onde (5) pour émettre un rayonnement électromagnétique (6), une paroi de boîtier (7) du boîtier de lampe (2) présentant une partie d'injection (8) à travers laquelle le rayonnement micro-onde (5) peut être injecté dans le volume de lampe (4), de manière à activer l'agent lumineux (3), le boîtier de lampe (2) comportant un système de blindage (9), ledit système de blindage (9) étant adapté au rayonnement micro-onde (5), de manière à empêcher une diffusion du rayonnement micro-onde (5) à travers le système de blindage (9). L'invention se caractérise en ce que le volume de lampe (4) est étanche au gaz et/ou est rendu étanche au gaz vis-à-vis d'un volume de gaz extérieur (10), agencé en dehors du boîtier de lampe (2), par le boîtier de lampe (2).
EP20811525.3A 2019-11-01 2020-10-30 Système de lampe à plasma Pending EP4052281A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU101467A LU101467B1 (de) 2019-11-01 2019-11-01 Plasmalampensystem
PCT/EP2020/080598 WO2021084110A2 (fr) 2019-11-01 2020-10-30 Système de lampe à plasma

Publications (1)

Publication Number Publication Date
EP4052281A2 true EP4052281A2 (fr) 2022-09-07

Family

ID=68807325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20811525.3A Pending EP4052281A2 (fr) 2019-11-01 2020-10-30 Système de lampe à plasma

Country Status (3)

Country Link
EP (1) EP4052281A2 (fr)
LU (1) LU101467B1 (fr)
WO (1) WO2021084110A2 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3933992A1 (de) * 1989-10-11 1991-04-18 Mls Gmbh Verfahren und vorrichtung zum ausloesen und/oder foerdern chemischer prozesse
US5798611A (en) * 1990-10-25 1998-08-25 Fusion Lighting, Inc. Lamp having controllable spectrum
US6922021B2 (en) * 2000-07-31 2005-07-26 Luxim Corporation Microwave energized plasma lamp with solid dielectric waveguide

Also Published As

Publication number Publication date
LU101467B1 (de) 2021-05-11
WO2021084110A3 (fr) 2021-07-01
WO2021084110A2 (fr) 2021-05-06

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