NL7708624A - Long life halogen filled tungsten filament lamp - counters temp. reduction at filament end by high thermal resistance lead wires - Google Patents

Long life halogen filled tungsten filament lamp - counters temp. reduction at filament end by high thermal resistance lead wires

Info

Publication number
NL7708624A
NL7708624A NL7708624A NL7708624A NL7708624A NL 7708624 A NL7708624 A NL 7708624A NL 7708624 A NL7708624 A NL 7708624A NL 7708624 A NL7708624 A NL 7708624A NL 7708624 A NL7708624 A NL 7708624A
Authority
NL
Netherlands
Prior art keywords
filament
reduction
counters
temp
lead
Prior art date
Application number
NL7708624A
Other languages
Dutch (nl)
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Priority to NL7708624A priority Critical patent/NL7708624A/en
Publication of NL7708624A publication Critical patent/NL7708624A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body

Landscapes

  • Resistance Heating (AREA)

Abstract

The halogen filled tungsten filament incandescent lamp has its filament connected to the lead-in wires by means of metal foil strips which are attached to the filament and the lead wires. This construction reduces heat transfer out of the lamp through the lead-in wires with a resulting reduction in the temperature of the ends of the filament. Such a reduction in temperature leads to attack of the filament by tungsten-halogen compounds which form at low temperature and would normally lead to a broken filament near the lead-in.
NL7708624A 1977-08-04 1977-08-04 Long life halogen filled tungsten filament lamp - counters temp. reduction at filament end by high thermal resistance lead wires NL7708624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7708624A NL7708624A (en) 1977-08-04 1977-08-04 Long life halogen filled tungsten filament lamp - counters temp. reduction at filament end by high thermal resistance lead wires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7708624A NL7708624A (en) 1977-08-04 1977-08-04 Long life halogen filled tungsten filament lamp - counters temp. reduction at filament end by high thermal resistance lead wires

Publications (1)

Publication Number Publication Date
NL7708624A true NL7708624A (en) 1979-02-06

Family

ID=19828972

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7708624A NL7708624A (en) 1977-08-04 1977-08-04 Long life halogen filled tungsten filament lamp - counters temp. reduction at filament end by high thermal resistance lead wires

Country Status (1)

Country Link
NL (1) NL7708624A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed