JPS5564359A - Fluorescent lamp - Google Patents

Fluorescent lamp

Info

Publication number
JPS5564359A
JPS5564359A JP13680678A JP13680678A JPS5564359A JP S5564359 A JPS5564359 A JP S5564359A JP 13680678 A JP13680678 A JP 13680678A JP 13680678 A JP13680678 A JP 13680678A JP S5564359 A JPS5564359 A JP S5564359A
Authority
JP
Japan
Prior art keywords
phosphor
phosphor layer
circumferentially
layer
glass 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.)
Granted
Application number
JP13680678A
Other languages
Japanese (ja)
Other versions
JPS6337458B2 (en
Inventor
Tadayoshi Kodama
Taisuke Hirota
Hiroshi Ono
Etsuo Urataki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13680678A priority Critical patent/JPS5564359A/en
Priority to US06/089,744 priority patent/US4336479A/en
Publication of JPS5564359A publication Critical patent/JPS5564359A/en
Publication of JPS6337458B2 publication Critical patent/JPS6337458B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To obtain a high intensity of illumination and high color rendering, by constituting the phosphor layers that are comprising a phosphor layer, coated fully circumferentially on the inner wall of glass tube, and a phosphor layer, coated partially circumferentially on top of the former layer.
CONSTITUTION: Fully circumferentially to the inner wall of a glass tube 1, is applied a phosphor layer 2, having a specific emission spectrum, and circumferentially on top of that in a region except an opening angle α, is applied a phosphor layer 3, respectively, having an emission spectrum similar to or different from the phosphor of the phosphor layer 2. The direction of irradiation is mainly toward a direction of R oppositely to that facing the phosphor layer 3. As a phosphor, used in the phosphor layer 2, 3, can be used a phosphor of white, day-light and dull white color, as shown in JISZ9112 (class of chromaticity of fluorescent lamp), and those of color rendering modified type, for instance, of pure natutal white color type.
COPYRIGHT: (C)1980,JPO&Japio
JP13680678A 1978-11-08 1978-11-08 Fluorescent lamp Granted JPS5564359A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP13680678A JPS5564359A (en) 1978-11-08 1978-11-08 Fluorescent lamp
US06/089,744 US4336479A (en) 1978-11-08 1979-10-31 Fluorescent lamp having reflective layer and a method for fabricating the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13680678A JPS5564359A (en) 1978-11-08 1978-11-08 Fluorescent lamp

Publications (2)

Publication Number Publication Date
JPS5564359A true JPS5564359A (en) 1980-05-15
JPS6337458B2 JPS6337458B2 (en) 1988-07-26

Family

ID=15183940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13680678A Granted JPS5564359A (en) 1978-11-08 1978-11-08 Fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS5564359A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806792A2 (en) * 1996-05-08 1997-11-12 SLI Lichtsysteme GmbH Compact fluorescence lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806792A2 (en) * 1996-05-08 1997-11-12 SLI Lichtsysteme GmbH Compact fluorescence lamp
EP0806792A3 (en) * 1996-05-08 1998-03-11 SLI Lichtsysteme GmbH Compact fluorescence lamp

Also Published As

Publication number Publication date
JPS6337458B2 (en) 1988-07-26

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