JPS6455508U - - Google Patents
Info
- Publication number
- JPS6455508U JPS6455508U JP1987147483U JP14748387U JPS6455508U JP S6455508 U JPS6455508 U JP S6455508U JP 1987147483 U JP1987147483 U JP 1987147483U JP 14748387 U JP14748387 U JP 14748387U JP S6455508 U JPS6455508 U JP S6455508U
- Authority
- JP
- Japan
- Prior art keywords
- light source
- light shielding
- lighting device
- reflector
- source 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
Links
- 230000000694 effects Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
第１図は本考案の一実施例の断面図、第２図は
同実施例で用いる遮光模様並びに反射率の低い部
材を示した斜視図、第３図は同実施例の拡散板上
の輝度分布を示すグラフ、第４図乃至第８図は夫
夫遮光模様の他の例を示す図、第９図は従来の照
明装置の断面図、第１０図は従来の遮光模様を設
けた蛍光管の斜視図、第１１図は従来の遮光板の
他の例を示す平面図、第１２図、第１３図はいず
れも従来の照明装置の拡散板上での輝度分布を示
すグラフである。
１…反射板、２…蛍光管、３…拡散板、４…遮
光部、５…光吸収シート。
Fig. 1 is a cross-sectional view of an embodiment of the present invention, Fig. 2 is a perspective view showing a light-shielding pattern and members with low reflectance used in the embodiment, and Fig. 3 is the luminance on the diffuser plate of the embodiment. Graphs showing the distribution, Figures 4 to 8 are diagrams showing other examples of the shading pattern, Figure 9 is a cross-sectional view of a conventional lighting device, and Figure 10 is a fluorescent tube with a conventional shading pattern. , FIG. 11 is a plan view showing another example of a conventional light shielding plate, and FIGS. 12 and 13 are graphs showing luminance distribution on a diffuser plate of a conventional lighting device. DESCRIPTION OF SYMBOLS 1... Reflection plate, 2... Fluorescent tube, 3... Diffusion plate, 4... Light shielding part, 5... Light absorption sheet.
Claims (1)
状の光源に対して反射板と反対側に拡散板を配置
した照明装置において、前記光源管上面に少なく
とも最上部において遮光作用が大で管側面付近で
は遮光作用が小である遮光部を設け更に光源管直
下の反射板上に反射率の低い部分を形成するよう
にしたことを特徴とする照明装置。 In a lighting device in which a linear light source is disposed above a reflector and a diffuser is disposed on the opposite side of the linear light source to the reflector, the light source tube has a light shielding effect at least at the top thereof on the upper surface of the light source tube. 1. A lighting device characterized in that a light shielding portion having a small light shielding effect is provided near the side surface, and further a portion with low reflectance is formed on a reflection plate directly below the light source tube.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987147483U JPH0650891Y2 (en) | 1987-09-29 | 1987-09-29 | Lighting equipment |
| US07/216,429 US5038259A (en) | 1987-07-09 | 1988-07-07 | Illumination device |
| KR1019880008437A KR970008278B1 (en) | 1987-07-09 | 1988-07-07 | An illumination device |
| DE3853024T DE3853024T2 (en) | 1987-07-09 | 1988-07-07 | Lighting device. |
| EP88110897A EP0298492B1 (en) | 1987-07-09 | 1988-07-07 | An illumination device |
| CA000571588A CA1333710C (en) | 1987-07-09 | 1988-07-08 | Illuminated device |
| US07/706,306 US5144539A (en) | 1987-07-09 | 1991-05-28 | Illumination device |
| US07/738,128 US5101331A (en) | 1987-07-09 | 1991-07-30 | Illumination device |
| US07/737,488 US5101330A (en) | 1987-07-09 | 1991-07-30 | Illumination device |
| US07/737,979 US5105345A (en) | 1987-07-09 | 1991-07-30 | Illumination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987147483U JPH0650891Y2 (en) | 1987-09-29 | 1987-09-29 | Lighting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6455508U true JPS6455508U (en) | 1989-04-06 |
| JPH0650891Y2 JPH0650891Y2 (en) | 1994-12-21 |
Family
ID=31417923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987147483U Expired - Lifetime JPH0650891Y2 (en) | 1987-07-09 | 1987-09-29 | Lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0650891Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4836385U (en) * | 1971-09-03 | 1973-05-01 | ||
| JPS503384U (en) * | 1973-05-04 | 1975-01-14 | ||
| JPS55133008A (en) * | 1979-04-03 | 1980-10-16 | Ono Gijutsu Kenkyusho:Kk | Thin type shaukasten |
| JPS6190106U (en) * | 1984-11-20 | 1986-06-12 |
-
1987
- 1987-09-29 JP JP1987147483U patent/JPH0650891Y2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4836385U (en) * | 1971-09-03 | 1973-05-01 | ||
| JPS503384U (en) * | 1973-05-04 | 1975-01-14 | ||
| JPS55133008A (en) * | 1979-04-03 | 1980-10-16 | Ono Gijutsu Kenkyusho:Kk | Thin type shaukasten |
| JPS6190106U (en) * | 1984-11-20 | 1986-06-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0650891Y2 (en) | 1994-12-21 |