JPS5394472A - Cover for lighting fixture - Google Patents
Cover for lighting fixtureInfo
- 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
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
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)
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 |
-
1977
- 1977-01-31 JP JP1094877A patent/JPS5394472A/en active Pending
Cited By (3)
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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