EP0358273A1 - Reflektorlampe - Google Patents

Reflektorlampe Download PDF

Info

Publication number
EP0358273A1
EP0358273A1 EP89202236A EP89202236A EP0358273A1 EP 0358273 A1 EP0358273 A1 EP 0358273A1 EP 89202236 A EP89202236 A EP 89202236A EP 89202236 A EP89202236 A EP 89202236A EP 0358273 A1 EP0358273 A1 EP 0358273A1
Authority
EP
European Patent Office
Prior art keywords
wall portion
lamp
metal layer
lamp vessel
edge zone
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.)
Withdrawn
Application number
EP89202236A
Other languages
English (en)
French (fr)
Inventor
Christiaan Prozée
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
Koninklijke Philips Electronics 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, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0358273A1 publication Critical patent/EP0358273A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/005—Methods for coating the surface of the envelope

Definitions

  • Etching lamp vessels has a number of disadvantages.
  • An important disadvantage is that the environment is loaded with residues of etching acid.
  • Other disadvantages are that the mechanical strength of the lamp vessel is diminished by etching and that the metal layer of the second wall portion extends entirely over an etched surface. As a result, said metal layer lacks on the outer side a brilliant, reflecting appearance.
  • the invention has for its object to provide a lamp of the kind described in the opening paragraph, in whose manufacture the use of etching acid is avoided.
  • this object is achieved in a lamp of the kind described in the opening paragraph in that the third wall portion is provided on its inner side with an electrostatic powder coating, which extends in an adjoining edge zone of the second wall portion, and in that the metal layer on the second wall portion extends in the edge zone over the inner side of the powder coating.
  • An electrostatic powder coating can be obtained in a simple manner in that a powder, to which an electric charge is supplied, is dusted near a heated wall having an electric charge of a sign opposite to that of the powder. Under the influence of a potential difference of several kV, for example 10 or 15 kV, the powder then adheres to the wall.
  • the third wall portion 4 is provided on the inner side with an electrostatic powder coating 14 (Figure 2), which extends in an adjoining edge zone 7 of the second wall portion 3.
  • the metal layer 13 ( Figure 2) on the second wall portion 3 extends in the edge zone 7 over the inner side of the powder coating 14 ( Figure 2).
  • the powder coating 14 consisted of equal parts by weight of a hydrophilic and a hydrophobic SiO2 powder.
  • the coating had a thickness of about 10 ⁇ m. This is not more than one tenth of the thickness of a coating on lamp vessels coated entirely or for the major part with an electrostatic coating to cause a lamp to irradiate diffuse light.
  • the metal layer consisted of aluminium. During operation at mains voltage, the lamp consumed a power of 60 W and formed a light beam of the same quality as a lamp commercially available having an etched third wall portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
EP89202236A 1988-09-06 1989-09-05 Reflektorlampe Withdrawn EP0358273A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8802193 1988-09-06
NL8802193 1988-09-06

Publications (1)

Publication Number Publication Date
EP0358273A1 true EP0358273A1 (de) 1990-03-14

Family

ID=19852859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89202236A Withdrawn EP0358273A1 (de) 1988-09-06 1989-09-05 Reflektorlampe

Country Status (4)

Country Link
EP (1) EP0358273A1 (de)
JP (1) JPH02106867A (de)
DD (1) DD287808A5 (de)
HU (1) HUT51032A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0470002A1 (de) * 1990-08-02 1992-02-05 Jean-Michel Rochet Miniatur-Birne und ihre Herstellungstechnik
US6270237B1 (en) * 1998-03-26 2001-08-07 U.S. Philips Corporation Electric lamp with an anti-reflecting layer
CN100353486C (zh) * 2000-06-07 2007-12-05 皇家菲利浦电子有限公司 高压放电灯

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275876A (en) * 1975-12-19 1977-06-25 Matsushita Electronics Corp Reflection type electric bulb
EP0237104A1 (de) * 1986-03-11 1987-09-16 Koninklijke Philips Electronics N.V. Geblasener Lampenkolben und mit einem solchen Kolben versehene elektrische Lampe
EP0241987A1 (de) * 1986-04-16 1987-10-21 Koninklijke Philips Electronics N.V. Elektrische Lampe mit verspiegeltem Kolben

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275876A (en) * 1975-12-19 1977-06-25 Matsushita Electronics Corp Reflection type electric bulb
EP0237104A1 (de) * 1986-03-11 1987-09-16 Koninklijke Philips Electronics N.V. Geblasener Lampenkolben und mit einem solchen Kolben versehene elektrische Lampe
EP0241987A1 (de) * 1986-04-16 1987-10-21 Koninklijke Philips Electronics N.V. Elektrische Lampe mit verspiegeltem Kolben

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 134 (4674)[M-77], 5th November 1977, page 4674 M 77; & JP-A-52 075 876 (MATSUSHITA DENSHI KOGYO K.K.) 25-06-1975 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0470002A1 (de) * 1990-08-02 1992-02-05 Jean-Michel Rochet Miniatur-Birne und ihre Herstellungstechnik
FR2665573A1 (fr) * 1990-08-02 1992-02-07 Rochet Jean Michel Ampoule electrique miniature et sa technique de fabrication.
US6270237B1 (en) * 1998-03-26 2001-08-07 U.S. Philips Corporation Electric lamp with an anti-reflecting layer
CN100353486C (zh) * 2000-06-07 2007-12-05 皇家菲利浦电子有限公司 高压放电灯

Also Published As

Publication number Publication date
HUT51032A (en) 1990-03-28
JPH02106867A (ja) 1990-04-18
DD287808A5 (de) 1991-03-07

Similar Documents

Publication Publication Date Title
US5030894A (en) Rare gas discharge lamp device
JPH0550098B2 (de)
US4835439A (en) Increasing the oxidation resistance of molybdenum and its use for lamp seals
GB909621A (en) Aperture fluorescent lamp
US3809944A (en) Low-pressure mercury vapour discharge lamp
US3767956A (en) Aperture fluorescent lamp for copying machines
EP0678897B1 (de) Lampe mit einem Phosphorüberzug und Verfahren zu ihrer Herstellung
CN100359630C (zh) 具有降低的灯密封温度的抛物面反射灯
EP0358273A1 (de) Reflektorlampe
KR100372959B1 (ko) 투영용금속할로겐화물가스방전램프
IT8020022A1 (it) Tubo a raggi cartodici dotato di mezzi per la soppressione di archi all'interno dello stesso
US4874988A (en) Pulsed metal halide arc discharge light source
KR20010042052A (ko) 형광램프
US2988458A (en) Process for electrostatic coating of incandescent lamp envelopes
JP2997288B2 (ja) 光源装置
EP0054356A1 (de) Kathodolumineszente Lichtquellen und aus solchen Lichtquellen bestehende Beleuchtungseinrichtungen
EP0769804A3 (de) Elektrodenlose Leuchtstofflampe
EP0452133B1 (de) Mit Polymeren beschichtete Lampen und ihre Herstellung
EP0192290B1 (de) Elektrische Lampe mit farbigem Kolben
GB2152280A (en) Lamp
KR100252067B1 (ko) 음극선관의 패널과 음극선관 패널의 코팅층 형성방법
JPH0762992B2 (ja) 反射形メタルハライドランプ
KR200199257Y1 (ko) 횡장형 음극선관의 알루마이징장치
JPS60165035A (ja) 複写用螢光ランプとその製造方法
JPH056740A (ja) 陰極線管

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FR GB IT NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19900915