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ES463619A1 - Low pressure sodium vapour discharge lemp - Google Patents

Low pressure sodium vapour discharge lemp

Info

Publication number
ES463619A1
ES463619A1 ES463619A ES463619A ES463619A1 ES 463619 A1 ES463619 A1 ES 463619A1 ES 463619 A ES463619 A ES 463619A ES 463619 A ES463619 A ES 463619A ES 463619 A1 ES463619 A1 ES 463619A1
Authority
ES
Spain
Prior art keywords
lamp
discharge tube
low pressure
pressure sodium
lemp
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.)
Expired
Application number
ES463619A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES463619A1 publication Critical patent/ES463619A1/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/30Vessels; Containers
    • H01J61/35Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

An improved low pressure sodium vapor discharge lamp that is provided with an elongated discharge tube that can be curved no more than once, and an outer bulb that surrounds this tube, in which the thermal insulation of the lamp it is mainly achieved, by means of an internal infrared radiation reflector, which surrounds the discharge tube, the reflector being, in at least half of its area, transmitter of the visible light generated in the discharge tube, and in the that the sodium is present in excess and-if the ambient temperature around the lamp is about 20º c, the temperature of the coldest point of the discharge tube in the operating condition of the lamp is sufficiently small that said temperature of the point more cooling of the discharge tube in said range is achieved with an electric power supplied to the lamp of no more than 25 watts. (Machine-translation by Google Translate, not legally binding)
ES463619A 1976-10-29 1977-10-27 Low pressure sodium vapour discharge lemp Expired ES463619A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7611993,A NL180464C (en) 1976-10-29 1976-10-29 LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP.

Publications (1)

Publication Number Publication Date
ES463619A1 true ES463619A1 (en) 1978-07-16

Family

ID=19827133

Family Applications (1)

Application Number Title Priority Date Filing Date
ES463619A Expired ES463619A1 (en) 1976-10-29 1977-10-27 Low pressure sodium vapour discharge lemp

Country Status (14)

Country Link
JP (1) JPS5356878A (en)
AR (1) AR215653A1 (en)
AT (1) AT362839B (en)
BE (1) BE860193A (en)
BR (1) BR7707187A (en)
CA (1) CA1094628A (en)
DE (1) DE2746413C2 (en)
ES (1) ES463619A1 (en)
FR (1) FR2369678A1 (en)
GB (1) GB1558016A (en)
HU (1) HU179567B (en)
IN (1) IN148893B (en)
IT (1) IT1088601B (en)
NL (1) NL180464C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7811350A (en) * 1978-11-17 1980-05-20 Philips Nv LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP.
NL185481C (en) * 1979-11-14 1990-04-17 Philips Nv LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP.
NL8205026A (en) * 1982-12-29 1984-07-16 Philips Nv APPARATUS EQUIPPED WITH A METAL VAPOR DISCHARGE PIPE EQUIPPED WITH AT LEAST TWO INTERNAL ELECTRODES.
US5036243A (en) * 1989-12-18 1991-07-30 Cocks Franklin H Glass plate illumination device sign with integral electrodes of particular thermal resistance
JP4274053B2 (en) 2004-06-07 2009-06-03 ウシオ電機株式会社 Light source device
CN102097277B (en) * 2010-11-23 2016-04-06 浙江华氏照明科技有限公司 A kind of quartz metal halide lamp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT205601B (en) * 1957-07-18 1959-10-10 Philips Nv U-shaped sodium vapor discharge tube
FR1199913A (en) * 1957-07-18 1959-12-17 Philips Nv Sodium vapor discharge tube in the shape of a u
DE1260627B (en) * 1965-11-13 1968-02-08 Philips Nv Sodium Discharge Lamp
NL166818C (en) * 1974-11-14 1981-09-15 Philips Nv LOW PRESSURE SODIUM VAPOR DISCHARGE LAMP.

Also Published As

Publication number Publication date
FR2369678B1 (en) 1982-04-23
IN148893B (en) 1981-07-11
IT1088601B (en) 1985-06-10
BR7707187A (en) 1978-07-18
HU179567B (en) 1982-11-29
NL180464C (en) 1987-02-16
JPS6127858B2 (en) 1986-06-27
FR2369678A1 (en) 1978-05-26
ATA766277A (en) 1980-11-15
AR215653A1 (en) 1979-10-31
NL180464B (en) 1986-09-16
CA1094628A (en) 1981-01-27
AT362839B (en) 1981-06-25
BE860193A (en) 1978-04-27
JPS5356878A (en) 1978-05-23
DE2746413C2 (en) 1982-11-04
DE2746413A1 (en) 1978-05-03
GB1558016A (en) 1979-12-19
NL7611993A (en) 1978-05-03

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19980504