JPS6449887U - - Google Patents
Info
- Publication number
- JPS6449887U JPS6449887U JP14166187U JP14166187U JPS6449887U JP S6449887 U JPS6449887 U JP S6449887U JP 14166187 U JP14166187 U JP 14166187U JP 14166187 U JP14166187 U JP 14166187U JP S6449887 U JPS6449887 U JP S6449887U
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent
- lamps
- shaped opening
- opening
- lighting device
- 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
- 239000011521 glass Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000005286 illumination Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図は本考案に係る照明装置の一実施例を示
す断面図、第２図は螢光ランプの斜視図、第３図
は同ランプの光度分布を示す図、第４図は本考案
の他の実施例を示す断面図、第５図ａ，ｂはそれ
ぞれ螢光ランプを３つ使用した場合の実施例を示
す図、第６図ａ，ｂ，ｃはそれぞれ螢光ランプを
６つ使用した場合の実施例を示す図、第７図は従
来の照明装置の断面図、第８図は従来の螢光ラン
プの光度分布を示す図である。
１Ａ，１Ｂ……螢光ランプ、２……液晶表示装
置、３……拡散板、４……反射板、５……螢光物
質、１０……ガラス管、１１……開口部、１２Ａ
〜１２Ｆ……螢光ランプ。
Fig. 1 is a sectional view showing an embodiment of the lighting device according to the present invention, Fig. 2 is a perspective view of a fluorescent lamp, Fig. 3 is a diagram showing the luminous intensity distribution of the lamp, and Fig. 4 is a diagram showing the luminous intensity distribution of the lamp. Cross-sectional views showing other embodiments, Figures 5a and b are views showing embodiments in which three fluorescent lamps are used, and Figures 6a, b, and c are views in which six fluorescent lamps are each used. FIG. 7 is a sectional view of a conventional lighting device, and FIG. 8 is a diagram showing a luminous intensity distribution of a conventional fluorescent lamp. 1A, 1B... Fluorescent lamp, 2... Liquid crystal display device, 3... Diffusion plate, 4... Reflection plate, 5... Fluorescent substance, 10... Glass tube, 11... Opening, 12A
~12F... Fluorescent lamp.
Claims (1)
する照明装置において、前記螢光ランプのガラス
管の内面に軸線方向に長いスリツト状の開口部を
残して螢光物質を塗布することにより略鍵穴形の
光度分布とし、前記開口部の方向およびランプ間
隔を変え全体として均一な配光を得るようにした
ことを特徴とする照明装置。 In an illumination device that backlights a display section with a plurality of fluorescent lamps, a substantially keyhole-shaped opening is formed by coating a fluorescent substance on the inner surface of the glass tube of the fluorescent lamp, leaving a long slit-shaped opening in the axial direction. 1. A lighting device characterized in that the direction of the opening and the interval between the lamps are changed to obtain uniform light distribution as a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14166187U JPS6449887U (en) | 1987-09-18 | 1987-09-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14166187U JPS6449887U (en) | 1987-09-18 | 1987-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6449887U true JPS6449887U (en) | 1989-03-28 |
Family
ID=31406925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14166187U Pending JPS6449887U (en) | 1987-09-18 | 1987-09-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6449887U (en) |
-
1987
- 1987-09-18 JP JP14166187U patent/JPS6449887U/ja active Pending