EP2501986B1 - Lampe à remplissage de gaz - Google Patents

Lampe à remplissage de gaz Download PDF

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Publication number
EP2501986B1
EP2501986B1 EP11701815.0A EP11701815A EP2501986B1 EP 2501986 B1 EP2501986 B1 EP 2501986B1 EP 11701815 A EP11701815 A EP 11701815A EP 2501986 B1 EP2501986 B1 EP 2501986B1
Authority
EP
European Patent Office
Prior art keywords
gas
lamp
vessel
thermal conductivity
helium
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.)
Active
Application number
EP11701815.0A
Other languages
German (de)
English (en)
Other versions
EP2501986A1 (fr
Inventor
Stefan Lorenz
Guenter Hoetzl
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.)
Ledvance GmbH
Original Assignee
Ledvance GmbH
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 Ledvance GmbH filed Critical Ledvance GmbH
Publication of EP2501986A1 publication Critical patent/EP2501986A1/fr
Application granted granted Critical
Publication of EP2501986B1 publication Critical patent/EP2501986B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/04—Provision of filling media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/506—Cooling arrangements characterised by the adaptation for cooling of specific components of globes, bowls or cover glasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/20—Electroluminescent [EL] light sources

Definitions

  • the present invention relates to a gas-filled lamp.
  • a gas-filled lamp is out of the EP 1 471 564 A2 known.
  • the LED lamp described there is formed from a solid light source which is mounted on a support structure.
  • a translucent vessel encloses the light source and support structure, and an electrical supply line and return line are routed into and out of the housing in order to supply the light source with electrical energy.
  • This known LED lamp uses the thermal conductivity of helium for efficient cooling of the LED, with the heat being transported to the vessel walls via the helium filling.
  • a disadvantage of the helium filling is the high price of this gas, and cheaper gases such as hydrogen and nitrogen show poorer heat conduction. Better heat conduction can be achieved if these gases are mixed with air, which, however, results in an explosive mixture, so that undesired vessel ruptures occur.
  • helium places high demands on the tightness of the vessel.
  • the DE 102 60 432 A1 shows a single LED with a gas as a filling and the WO 2009 / 037053A1 an LED headlight bulb also with a gas filling.
  • the lamp is filled with a filling gas which is a mixture of at least one gas with high thermal conductivity and at least one gas with a different physical property.
  • a filling gas which is a mixture of at least one gas with high thermal conductivity and at least one gas with a different physical property.
  • the gas with high conductivity is selected from the group of helium and hydrogen, the use of helium being particularly preferred as a better heat conductor with inert properties.
  • the proportion of the gas with high thermal conductivity is 1-80%, preferably 1-10% and in particular 8 and 10%, in the filling gas mixture.
  • the proportion of the second component, i. of the gas with a different physical property 100% - x (proportion of gas with high conductivity).
  • a particular advantage of the present invention can be seen in the fact that if, for example, helium is used as the gas with high thermal conductivity, this is used in a relatively small volume, which noticeably reduces the production costs of the lamp.
  • the gas with a different physical property which is present in the filling gas mixture together with the gas of high thermal conductivity, generally has a lower reactivity than the gas with high thermal conductivity.
  • gases of the second component for example, high internal vessel pressures, optical changes in light such as light filtering and improved light output can be achieved.
  • gases with other physical properties are nitrogen, argon, neon, carbon dioxide, nitrogen dioxide or sulfur hexafluoride.
  • the gas pressure in the vessel is between 10 -2 and 1200 hPa, a preferred gas pressure being between 10 -1 and 100 hPa.
  • the solid light source of the invention Lamp is a light-emitting diode (LED) or a solid-state laser.
  • LED light-emitting diode
  • a solid-state laser usually this is a chip that is mounted directly on a heat-conducting carrier.
  • the chip is not coated or sealed with an epoxy or any other coating material, so that there is direct contact with the filling gas mixture.
  • the lamp according to the invention is surrounded by an at least partially translucent vessel in which the solid light source and the filling gas mixture are located.
  • a preferred embodiment for the vessel is made of glass.
  • vessels made of plastic and transparent and partially transparent ceramics can be structured in order to give the light source a certain optical appearance.
  • the carrier can take various forms, such as a plate of various dimensions or a rod.
  • a preferred carrier preferably comprises a holder which is arranged between an electrical supply line and a discharge line.
  • the solid light source such as an LED
  • the carrier can be formed from a circuit board material.
  • FIG. 1 shows an embodiment of a lamp 1 according to the invention in a schematic longitudinal sectional view.
  • the lamp has an LED light source 2 which is located on a carrier 3.
  • the light source and the carrier are mounted in a gas-tight vessel 4.
  • the vessel is at least partially translucent.
  • the gas mixture 5 is in contact with the LED light source 2 and the vessel 4 and possibly also with the carrier 3. More than that Half of the heat generated by the LED light source is transferred directly to the vessel wall via the LED -> filling gas -> vessel or indirectly via the LED -> carrier -> filling gas -> vessel via the filling gas 5.
  • the filling gas comprises a mixture of at least one gas with high thermal conductivity and at least one gas with a different physical property.
  • helium or hydrogen is used as the gas with high thermal conductivity.
  • the gas with a different physical property can be, for example, nitrogen, argon, neon, CO 2 , O 2 or SF 6 .
  • FIG. 2 shows a schematic representation of another embodiment of the lamp 1 according to the invention.
  • the vessel 4 is cylindrical.
  • the diameter is 25mm.
  • the LEDs 2 are mounted in series on a carrier 3 and are surrounded by the filling gas 5.
  • the vessel is made of glass.
  • the carrier which is made from a circuit board material such as FR4 or MCPCB, is attached to the glass bulb with retaining wires so that the LEDs can illuminate the entire vessel wall directly or indirectly.
  • the carrier can also be attached to the end caps (not shown).
  • an electrical lead and an electrical return which are highly thermally conductive, are provided below the carrier (not shown).
  • the carrier for example, copper or a similar material that is highly thermally conductive can be used as the electrical supply and return.
  • the support structure can also comprise cooling elements.
  • the lamp according to the invention can also have further elements, for example in the EP 1 471 564 A2 are described.
  • Embodiment 1 In a lamp according to the invention, a filling gas mixture of helium / nitrogen (N 2 ) is used. The proportion of helium is 50%. The pressure in the lamp is 100hPa. There is good thermal conductivity with a high internal vessel pressure, which results in a low mechanical load. Furthermore, there is a lower helium consumption in comparison with the previously known helium-filled lamps.
  • the advantageous ranges for the quantitative composition of this gas mixture and the pressures are 20% ⁇ He ⁇ 80%; 50hPa ⁇ P ⁇ 500hPa.
  • Embodiment 2 A filling gas mixture with helium / argon is used.
  • the proportion of helium in the filling gas mixture is 10%.
  • the internal pressure in the vessel was set at 100 hPa. It has been found that this gas mixture ensures high thermal conductivity with a high internal pressure in the vessel, which means low mechanical stress. In this embodiment, the helium consumption is even lower compared to the gas component with low reactivity.
  • this filling gas mixture the following ranges have proven to be advantageous: 5% ⁇ He ⁇ 20%; 50hPa ⁇ P ⁇ 500hPa.
  • Embodiment 3 The gas mixture has the composition helium / argon, the proportion of helium in the gas mixture being 10%.
  • the pressure is 10hPa.
  • the advantageous ranges are as follows: 5% ⁇ He ⁇ 20%; 1hPa ⁇ P ⁇ 50hPa.
  • Embodiment 4 A filling gas mixture of hydrogen / helium with a hydrogen content of 4% is used.
  • the pressure is 10hPa. It has been found that this filling gas mixture has excellent thermal conductivity and the hydrogen remains inactive.
  • the advantageous ranges for this filling gas mixture are as follows: 0.1% ⁇ hydrogen ⁇ 4%; 0.1hPa ⁇ P ⁇ 20hPa.
  • Embodiment 5 A gas mixture of helium and air was used to fill an LED lamp.
  • the proportion of helium in the gas mixture is 1%, the pressure is 100hPa.
  • This gas mixture has shown good thermal conductivity with a high internal pressure in the vessel. There is again a very low consumption of helium. In comparison to air, an increased thermal conductivity is found.
  • the advantageous ranges are as follows: 0.1% ⁇ helium ⁇ 2%; 80hPa ⁇ P ⁇ 200hPa.
  • Embodiment 6 A gas mixture of helium / nitrogen dioxide (NO 2 ) is used to fill the LED lamp.
  • the helium content is 20%, the pressure is 100hPa.
  • This gas mixture shows a high thermal conductivity with a high internal pressure in the vessel, an optical change in light being observed.
  • this gas mixture has the disadvantage that it is poisonous, so that a complete sealing of the lamp must be guaranteed.
  • the advantageous ranges here are as follows: 20% ⁇ helium ⁇ 80%; 10hPa ⁇ P ⁇ 200hPa.
  • Embodiment 7 A filling gas mixture of helium / sulfur hexafluoride (SF 6 ) is used, the proportion of helium in the gas mixture being 20%.
  • the pressure is 1hPa.
  • a good thermal conductivity was found with this gas mixture, while at the same time the dielectric strength is increased. Minimal gas consumption is recorded.
  • Advantageous ranges have resulted as follows: 20% ⁇ helium ⁇ 80%; 10hPa ⁇ P ⁇ 200hPa.
  • Embodiment 8 A gas mixture of helium / carbon dioxide (CO 2 ) is used, the proportion of helium being 50%.
  • the pressure is 900hPa.
  • the advantageous ranges are as follows: 40% ⁇ helium ⁇ 70%; 800hPa ⁇ P ⁇ 1200hPa.

Claims (9)

  1. Lampe (1) ayant au moins une source de lumière à l'état solide (2), dans laquelle la source de lumière à l'état solide (2) est une diode électroluminescente (DEL) ou un laser à l'état solide, montée sur un support (3) ; un récipient (4) au moins partiellement translucide, qui entoure la source de lumière et le support de manière étanche aux gaz, et un gaz de remplissage (5) enfermé dans le récipient, le gaz de remplissage étant un mélange d'au moins un gaz à conductivité thermique élevée et d'au moins un gaz ayant une propriété physique différente, le gaz (5) à conductivité thermique élevée étant choisi dans le groupe constitué par l'hélium et l'hydrogène, caractérisé en ce que la proportion du gaz à conductivité thermique élevée est de 1 à 80 % dans le mélange de gaz de remplissage.
  2. Lampe (1) selon la revendication 1, caractérisée en ce que le gaz à conductivité thermique élevée est l'hélium.
  3. Lampe (1) selon l'une des revendications 1 à 2, caractérisée en ce que le gaz ayant une propriété physique différente est l'azote, l'argon, le néon, le dioxyde de carbone, le dioxyde d'azote ou l'hexafluorure de soufre.
  4. Lampe (1) selon au moins une des revendications 1 à 3, caractérisée en ce que la pression du gaz dans le récipient (4) est comprise entre 10-2 et 1200hPa, de préférence entre 10-1 et 100hPa.
  5. Lampe (1) selon au moins une des revendications 1 à 4, caractérisée en ce que la proportion du gaz à conductivité thermique élevée est de 1 à 10%, en particulier de 8 et 10%, dans le mélange de gaz de remplissage.
  6. Lampe (1) selon au moins une des revendications 1 à 5, caractérisée en ce que le récipient (4) au moins partiellement translucide est en verre.
  7. Lampe (1) selon au moins une des revendications 1 à 5, caractérisée en ce que le récipient (4) au moins partiellement translucide est constitué d'une céramique transparente ou partiellement transparente.
  8. Lampe (1) selon au moins une des revendications 1 à 7, caractérisée en ce que plusieurs sources lumineuses (2) sont disposées en série sur le support.
  9. Lampe (1) selon la revendication 8, caractérisée en ce que le support (3) est formé d'un matériau en plaque de circuit.
EP11701815.0A 2010-02-15 2011-01-27 Lampe à remplissage de gaz Active EP2501986B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010001931A DE102010001931A1 (de) 2010-02-15 2010-02-15 Lampe mit Gasfüllung
PCT/EP2011/051107 WO2011098358A1 (fr) 2010-02-15 2011-01-27 Lampe à remplissage de gaz

Publications (2)

Publication Number Publication Date
EP2501986A1 EP2501986A1 (fr) 2012-09-26
EP2501986B1 true EP2501986B1 (fr) 2020-12-02

Family

ID=43806814

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11701815.0A Active EP2501986B1 (fr) 2010-02-15 2011-01-27 Lampe à remplissage de gaz

Country Status (6)

Country Link
US (1) US8587186B2 (fr)
EP (1) EP2501986B1 (fr)
JP (1) JP3181659U (fr)
CN (1) CN102762912A (fr)
DE (1) DE102010001931A1 (fr)
WO (1) WO2011098358A1 (fr)

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EP2535640B2 (fr) * 2010-09-08 2020-09-23 Zhejiang Ledison Optoelectronics Co., Ltd. Ampoule del et néon del assurant un éclairage 4 pi
SG185159A1 (en) * 2011-04-26 2012-11-29 Novalite Technology Pte Ltd Gas cooled light emitting diodes
US9395051B2 (en) 2012-04-13 2016-07-19 Cree, Inc. Gas cooled LED lamp
US9395074B2 (en) 2012-04-13 2016-07-19 Cree, Inc. LED lamp with LED assembly on a heat sink tower
US9310028B2 (en) 2012-04-13 2016-04-12 Cree, Inc. LED lamp with LEDs having a longitudinally directed emission profile
US9410687B2 (en) 2012-04-13 2016-08-09 Cree, Inc. LED lamp with filament style LED assembly
US8757839B2 (en) * 2012-04-13 2014-06-24 Cree, Inc. Gas cooled LED lamp
US9310065B2 (en) 2012-04-13 2016-04-12 Cree, Inc. Gas cooled LED lamp
US9234638B2 (en) 2012-04-13 2016-01-12 Cree, Inc. LED lamp with thermally conductive enclosure
US9322543B2 (en) 2012-04-13 2016-04-26 Cree, Inc. Gas cooled LED lamp with heat conductive submount
US9951909B2 (en) 2012-04-13 2018-04-24 Cree, Inc. LED lamp
WO2014045489A1 (fr) * 2012-09-21 2014-03-27 パナソニック株式会社 Source de lumière d'éclairage et dispositif d'éclairage
JP5818167B2 (ja) * 2012-11-01 2015-11-18 岩崎電気株式会社 Ｌｅｄランプ
USD748296S1 (en) 2013-03-14 2016-01-26 Cree, Inc. LED lamp
US9052093B2 (en) 2013-03-14 2015-06-09 Cree, Inc. LED lamp and heat sink
DE202013009434U1 (de) 2013-07-12 2013-11-05 Vosla Gmbh Lampe
WO2015053076A1 (fr) * 2013-10-11 2015-04-16 岩崎電気株式会社 Lampe à del scellée hermétiquement
CN103557456A (zh) * 2013-11-05 2014-02-05 深圳市裕富照明有限公司 高光效led灯
PL2993384T3 (pl) 2014-07-11 2019-12-31 Vosla Gmbh Taśmowy element świecący, żarówka oraz metoda produkcji taśmowego elementu świecącego
US9401468B2 (en) 2014-12-24 2016-07-26 GE Lighting Solutions, LLC Lamp with LED chips cooled by a phase transformation loop
US9958116B2 (en) 2015-03-20 2018-05-01 Eye Lighting International Of North America, Inc. Glass jacketed LED lamp
ITUB20152829A1 (it) 2015-08-04 2017-02-04 Getters Spa Dosaggio di idrogeno in lampadine di illuminazione a LED
JP6028177B1 (ja) * 2015-12-25 2016-11-16 株式会社野田スクリーン 光源装置
US10535805B2 (en) 2017-01-13 2020-01-14 Intematix Corporation Narrow-band red phosphors for LED lamps
US20180204984A1 (en) * 2017-01-13 2018-07-19 Intematix Corporation Narrow-band red phosphors for led lamps
DE202017105803U1 (de) * 2017-09-25 2019-01-09 Rehau Ag + Co Leuchtvorrichtung
CN109882748A (zh) * 2017-12-05 2019-06-14 福建永德吉灯业股份有限公司 一种低光衰led玻璃球泡灯
WO2020069724A1 (fr) * 2018-10-01 2020-04-09 Flowil International Lighting (Holding) B.V. Source de lumière à del linéaire
US11781714B2 (en) 2019-03-18 2023-10-10 Bridgelux, Inc. LED-filaments and LED-filament lamps
EP3942607A1 (fr) 2019-03-18 2022-01-26 Intematix Corporation Filament de del
US11342311B2 (en) 2019-03-18 2022-05-24 Intematix Corporation LED-filaments and LED-filament lamps utilizing manganese-activated fluoride red photoluminescence material
JP7242894B2 (ja) 2019-03-18 2023-03-20 インテマティックス・コーポレーション 光ルミネセンス層状構造体を備えるパッケージ化された白色発光デバイス
US20240044481A1 (en) * 2022-08-05 2024-02-08 Metro Marine Llc Sealing a lighting fixture with dry gas

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Also Published As

Publication number Publication date
DE102010001931A1 (de) 2011-08-18
US20120306340A1 (en) 2012-12-06
WO2011098358A1 (fr) 2011-08-18
EP2501986A1 (fr) 2012-09-26
JP3181659U (ja) 2013-02-21
US8587186B2 (en) 2013-11-19
CN102762912A (zh) 2012-10-31

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