JPS57180866A - Fluorescent lamp - Google Patents

Fluorescent lamp

Info

Publication number
JPS57180866A
JPS57180866A JP56066425A JP6642581A JPS57180866A JP S57180866 A JPS57180866 A JP S57180866A JP 56066425 A JP56066425 A JP 56066425A JP 6642581 A JP6642581 A JP 6642581A JP S57180866 A JPS57180866 A JP S57180866A
Authority
JP
Japan
Prior art keywords
phosphor
cat
layer
fluorescent lamp
daylight
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
JP56066425A
Other languages
Japanese (ja)
Other versions
JPS6351347B2 (en
Inventor
Hajime Nakamura
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP56066425A priority Critical patent/JPS57180866A/en
Publication of JPS57180866A publication Critical patent/JPS57180866A/en
Publication of JPS6351347B2 publication Critical patent/JPS6351347B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/48—Separate coatings of different luminous materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

PURPOSE:To improve the luminous efficiency of a double-tube-structure compact fluorescent lamp, in which the inner tube installed inside the outer tube works as a discharge path. CONSTITUTION:The inner wall of an inner tube 5 of a compact fluorescent lamp is coated with a first layer 6 consisting of a mixture phosphor of CAT and YOX and a second layer 7 consisting of Daylight phosphor. By thus preparing the first layer 6 from the mixture phosphor of CAT and YOX and the second layer 7 from Daylight phosphor, the CAT mixture phosphor which is notably deteriorated by ultraviolet rays is protected by Daylight phosphor. As a result, the decrease of the emission rate caused due to the deterioration of the CAT mixture phosphor is reduced, and the luminous efficiency of the lamp is much more enhanced.
JP56066425A 1981-04-30 1981-04-30 Fluorescent lamp Granted JPS57180866A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56066425A JPS57180866A (en) 1981-04-30 1981-04-30 Fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56066425A JPS57180866A (en) 1981-04-30 1981-04-30 Fluorescent lamp

Publications (2)

Publication Number Publication Date
JPS57180866A true JPS57180866A (en) 1982-11-08
JPS6351347B2 JPS6351347B2 (en) 1988-10-13

Family

ID=13315415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56066425A Granted JPS57180866A (en) 1981-04-30 1981-04-30 Fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS57180866A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54124581A (en) * 1978-03-20 1979-09-27 Matsushita Electronics Corp Fluorescent lamp
JPS5564358A (en) * 1978-11-09 1980-05-15 Mitsubishi Electric Corp Fluorescent lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54124581A (en) * 1978-03-20 1979-09-27 Matsushita Electronics Corp Fluorescent lamp
JPS5564358A (en) * 1978-11-09 1980-05-15 Mitsubishi Electric Corp Fluorescent lamp

Also Published As

Publication number Publication date
JPS6351347B2 (en) 1988-10-13

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