JPS54132378A - Metal halide lamp - Google Patents

Metal halide lamp

Info

Publication number
JPS54132378A
JPS54132378A JP3943678A JP3943678A JPS54132378A JP S54132378 A JPS54132378 A JP S54132378A JP 3943678 A JP3943678 A JP 3943678A JP 3943678 A JP3943678 A JP 3943678A JP S54132378 A JPS54132378 A JP S54132378A
Authority
JP
Japan
Prior art keywords
halogenide
recess
light emitting
bulb
halide lamp
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
JP3943678A
Other languages
Japanese (ja)
Inventor
Akihiro Kamiya
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3943678A priority Critical patent/JPS54132378A/en
Publication of JPS54132378A publication Critical patent/JPS54132378A/en
Pending legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To improve the light emitting efficiency of a metal halide lamp sealing excessive halogenide retained as not yet evaporated in a light emitting during lighting by accelerating evaporation of the halogenide without raising tubular wall load.
CONSTITUTION: A light emitting bulb 1 is contained within an external tube (not shown), a main electrode 2 is disposed at both internal ends, and an auxiliary electrode 3 is disposed in the vicinity of at least one of the electrodes 2. Both ends of the bulb 1 are sealed with metal foil conductor 4 and crushed to form seals 4. A recess 8 is formed on the upper internal wall of the bulb 1 to condense and retain excessive halogenide l. The lower inside of the recess 8 is formed with a passage such as, for example, oblique surface 9 for flowing down halogenide l. The halogenide l within the recess 8 is guided to the lower high temperature portion to accelerate the evaporation.
COPYRIGHT: (C)1979,JPO&Japio
JP3943678A 1978-04-04 1978-04-04 Metal halide lamp Pending JPS54132378A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3943678A JPS54132378A (en) 1978-04-04 1978-04-04 Metal halide lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3943678A JPS54132378A (en) 1978-04-04 1978-04-04 Metal halide lamp

Publications (1)

Publication Number Publication Date
JPS54132378A true JPS54132378A (en) 1979-10-15

Family

ID=12552942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3943678A Pending JPS54132378A (en) 1978-04-04 1978-04-04 Metal halide lamp

Country Status (1)

Country Link
JP (1) JPS54132378A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1315197A1 (en) * 2001-11-26 2003-05-28 Philips Intellectual Property & Standards GmbH High pressure discharge lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1315197A1 (en) * 2001-11-26 2003-05-28 Philips Intellectual Property & Standards GmbH High pressure discharge lamp

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