JPS6457560A - High-pressure sodium lamp - Google Patents

High-pressure sodium lamp

Info

Publication number
JPS6457560A
JPS6457560A JP21349287A JP21349287A JPS6457560A JP S6457560 A JPS6457560 A JP S6457560A JP 21349287 A JP21349287 A JP 21349287A JP 21349287 A JP21349287 A JP 21349287A JP S6457560 A JPS6457560 A JP S6457560A
Authority
JP
Japan
Prior art keywords
section
tube
conductive
conductive tube
hole
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.)
Granted
Application number
JP21349287A
Other languages
Japanese (ja)
Other versions
JPH083995B2 (en
Inventor
Naoki Saito
Jun Tominaga
Shingo Tsutsumi
Hiroaki Okumura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics 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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Priority to JP21349287A priority Critical patent/JPH083995B2/en
Publication of JPS6457560A publication Critical patent/JPS6457560A/en
Publication of JPH083995B2 publication Critical patent/JPH083995B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To suppress the change of the luminous color and prevent the lamp voltage rise by hermetically fixing a conductive tube, with the opening section located at the electrode side and the closed section penetrated by a conductive wire, filling ceramic cement in the gas between the periphery of a hole at the end section of an alumina tube and the barrel section of the conductive tube, and sealing the end section. CONSTITUTION:In the luminous tube of a high-color rendition type high-pressure sodium lamp, the opening section 7a of a conductive tube 7 is located at the electrode 2 side, a conductive wire 6 penetrates a small hole 8 provided on a closed section 7b, and the closed section 7b of the conductive tube 7 is hermetically fixed to the conductive wire 6 with titanic wax 9. The outer diameter of the opening section 7a of the conductive tube 7 is made larger then that of a barrel section 7c, a hole 11 is provided at the end section of a translucent alumina tube 10, and the conductive tube 7 is inserted by pressure. A gap is generated between the periphery of the hole 11 and the barrel section 7c of the conductive tube 7, and the periphery of the hole 11 and the outer periphery of the opening section 7a of the conductive tube 7 are brought into contact with each other. Ceramic cement 12 is filled in the gap.
JP21349287A 1987-08-27 1987-08-27 High pressure sodium lamp Expired - Fee Related JPH083995B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21349287A JPH083995B2 (en) 1987-08-27 1987-08-27 High pressure sodium lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21349287A JPH083995B2 (en) 1987-08-27 1987-08-27 High pressure sodium lamp

Publications (2)

Publication Number Publication Date
JPS6457560A true JPS6457560A (en) 1989-03-03
JPH083995B2 JPH083995B2 (en) 1996-01-17

Family

ID=16640096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21349287A Expired - Fee Related JPH083995B2 (en) 1987-08-27 1987-08-27 High pressure sodium lamp

Country Status (1)

Country Link
JP (1) JPH083995B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08331247A (en) * 1995-06-05 1996-12-13 Nec Corp System for controlling restart at the time of serious fault in exchange
US6366019B1 (en) 1999-05-28 2002-04-02 Matsushita Industrial Co., Ltd. High-pressure sodium lamp
EP2259120A1 (en) 2006-10-13 2010-12-08 Hitachi, Ltd. Projection display system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08331247A (en) * 1995-06-05 1996-12-13 Nec Corp System for controlling restart at the time of serious fault in exchange
US6366019B1 (en) 1999-05-28 2002-04-02 Matsushita Industrial Co., Ltd. High-pressure sodium lamp
EP2259120A1 (en) 2006-10-13 2010-12-08 Hitachi, Ltd. Projection display system
EP2309301A1 (en) 2006-10-13 2011-04-13 Hitachi, Ltd. Projection display system

Also Published As

Publication number Publication date
JPH083995B2 (en) 1996-01-17

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees