JPS5394472A - Cover for lighting fixture - Google Patents

Cover for lighting fixture

Info

Publication number
JPS5394472A
JPS5394472A JP1094877A JP1094877A JPS5394472A JP S5394472 A JPS5394472 A JP S5394472A JP 1094877 A JP1094877 A JP 1094877A JP 1094877 A JP1094877 A JP 1094877A JP S5394472 A JPS5394472 A JP S5394472A
Authority
JP
Japan
Prior art keywords
panel
cover
lighting fixture
lamp
pemeation
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
JP1094877A
Other languages
Japanese (ja)
Inventor
Keiji Azuma
Norio Shimizu
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 JP1094877A priority Critical patent/JPS5394472A/en
Publication of JPS5394472A publication Critical patent/JPS5394472A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the brightness distribution and beam pemeation rate with a V-shaped groove with an inclination angle determined by a refractive index of the panel, a diameter of a round fluorescent lamp and a distance between the panel and the lamp and a convex arc pattern arranged in a concentric circle with respect to the cross-sectional shape of a prism panel.
COPYRIGHT: (C)1978,JPO&Japio
JP1094877A 1977-01-31 1977-01-31 Cover for lighting fixture Pending JPS5394472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1094877A JPS5394472A (en) 1977-01-31 1977-01-31 Cover for lighting fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1094877A JPS5394472A (en) 1977-01-31 1977-01-31 Cover for lighting fixture

Publications (1)

Publication Number Publication Date
JPS5394472A true JPS5394472A (en) 1978-08-18

Family

ID=11764414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1094877A Pending JPS5394472A (en) 1977-01-31 1977-01-31 Cover for lighting fixture

Country Status (1)

Country Link
JP (1) JPS5394472A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009110961A (en) * 2007-10-31 2009-05-21 Taiwan Network Computer & Electronic Co Ltd Light distribution board
JP2009272213A (en) * 2008-05-09 2009-11-19 Showa Denko Kk Illumination device, ceiling frame therewith, and system ceiling
CN102297345A (en) * 2010-06-22 2011-12-28 财团法人车辆研究测试中心 Lighting device provided with microstructural brightness enhancement film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009110961A (en) * 2007-10-31 2009-05-21 Taiwan Network Computer & Electronic Co Ltd Light distribution board
JP2009272213A (en) * 2008-05-09 2009-11-19 Showa Denko Kk Illumination device, ceiling frame therewith, and system ceiling
CN102297345A (en) * 2010-06-22 2011-12-28 财团法人车辆研究测试中心 Lighting device provided with microstructural brightness enhancement film

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