JPS54160075A - Metallic vapor discharge lamp - Google Patents

Metallic vapor discharge lamp

Info

Publication number
JPS54160075A
JPS54160075A JP6868978A JP6868978A JPS54160075A JP S54160075 A JPS54160075 A JP S54160075A JP 6868978 A JP6868978 A JP 6868978A JP 6868978 A JP6868978 A JP 6868978A JP S54160075 A JPS54160075 A JP S54160075A
Authority
JP
Japan
Prior art keywords
temperature
lamp
rise
tube
luminous tube
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
JP6868978A
Other languages
Japanese (ja)
Inventor
Norihiko Tanaka
Ryo Suzuki
Kanji Soma
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6868978A priority Critical patent/JPS54160075A/en
Publication of JPS54160075A publication Critical patent/JPS54160075A/en
Pending legal-status Critical Current

Links

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE: To provide a metallic vapor discharge lamp which eliminates restriction on lighting apparatus through the control of the rise in the temperature at the coolest section in a metallic exhaust tube or the like by means of a radiation plate which is arranged at the position corresponding to the displacement of a thermo-responsive element closely attached thereto due to thermal deformation when the temperature at the coolest section reaches the given level.
CONSTITUTION: A thermo-responsive element 11 made of a bimetal and a reflector 12 are sepatated away from each other when the lamp is turned off, while the space therebetween is reduced due to the deformation of the element as the temperature of the luminous tube 1 and then, reaches the point where they come in contact with each other when the given temperature is exceeded. This allows the radiation of heat from the luminous tube, particularly at the coolest section by transmission to the radiation plate 12 through the element 11. As a result, the temperature rise of the coolest section and ultimately the rise in the lamp voltage can be controlled thereby reducing the life of the lamp. The luminous tube 1 (light permeable alumina tube) is composed of a power introduction members 3a and 3b, a lead bar 7a, a frame line 7b, lead plates 9a and 9b, a base 10 and the like.
COPYRIGHT: (C)1979,JPO&Japio
JP6868978A 1978-06-07 1978-06-07 Metallic vapor discharge lamp Pending JPS54160075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6868978A JPS54160075A (en) 1978-06-07 1978-06-07 Metallic vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6868978A JPS54160075A (en) 1978-06-07 1978-06-07 Metallic vapor discharge lamp

Publications (1)

Publication Number Publication Date
JPS54160075A true JPS54160075A (en) 1979-12-18

Family

ID=13380959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6868978A Pending JPS54160075A (en) 1978-06-07 1978-06-07 Metallic vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS54160075A (en)

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