JPS62202706U - - Google Patents
Info
- Publication number
- JPS62202706U JPS62202706U JP9165086U JP9165086U JPS62202706U JP S62202706 U JPS62202706 U JP S62202706U JP 9165086 U JP9165086 U JP 9165086U JP 9165086 U JP9165086 U JP 9165086U JP S62202706 U JPS62202706 U JP S62202706U
- Authority
- JP
- Japan
- Prior art keywords
- discharge lamp
- opening
- axis direction
- tube axis
- thicker
- 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
- 238000009792 diffusion process Methods 0.000 claims 1
- 238000005286 illumination Methods 0.000 claims 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
Description
第１図および第２図は本考案の第１の実施例を
示し、第１図は管軸方向の断面図、第２図は管軸
方向と直交する方向の断面図、第３図は本考案の
第２の実施例を示す管軸方向と直交する方向の断
面図、第４図ないし第６図は従来の構造を示すも
ので、第４図は全体の斜視図、第５図は第４図中
―線に沿つて照度分布特性とともに示す断面
図、第６図は第４図中―線に沿つて照度分布
特性とともに示す断面図である。
１……ケーシング、２……冷陰極けい光ランプ
（管形放電灯）、３……ソケツト、４……電極、
１０……光拡散板、１１……内面、１２……外面
、１３……最大厚肉部。
1 and 2 show a first embodiment of the present invention, FIG. 1 is a cross-sectional view in the tube axis direction, FIG. 2 is a cross-sectional view in a direction perpendicular to the tube axis direction, and FIG. A cross-sectional view in a direction perpendicular to the tube axis direction showing a second embodiment of the invention, and FIGS. 4 to 6 show the conventional structure, with FIG. 4 being an overall perspective view and FIG. FIG. 4 is a cross-sectional view taken along the line ``-'' along with the illuminance distribution characteristics, and FIG. 6 is a cross-sectional view taken along the line ``--'' in FIG. 4 along with the illuminance distribution characteristics. 1... Casing, 2... Cold cathode fluorescent lamp (tubular discharge lamp), 3... Socket, 4... Electrode,
10...Light diffusing plate, 11...Inner surface, 12...Outer surface, 13...Maximum thick wall portion.
Claims (1)
して略平行に管形放電灯を収容し、この放電灯か
ら放射された光を上記開口部に設けた光拡散板を
透過させて光拡散板の前面を照射する照明装置に
おいて、上記光拡散板は少なくとも内面側の肉厚
を、上記放電灯の管軸方向に沿う中央部を両端部
より厚肉に形成して漸次肉厚を変化させるととも
に、上記放電灯の管軸方向と直交する方向では、
放電灯に近い箇所を両側部よりも厚肉に形成して
漸次肉厚を変化させたことを特徴とする照明装置
。 A tubular discharge lamp is housed in a casing with an opening on one side, approximately parallel to the opening, and the light emitted from the discharge lamp is transmitted through a light diffusion plate provided in the opening. In the illumination device that illuminates the front surface, the light diffusing plate gradually changes the wall thickness at least on the inner surface side by forming the center portion along the tube axis direction of the discharge lamp thicker than both end portions, and In the direction perpendicular to the tube axis direction of the above discharge lamp,
A lighting device characterized in that a portion near a discharge lamp is thicker than both side portions, and the thickness is gradually changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9165086U JPS62202706U (en) | 1986-06-16 | 1986-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9165086U JPS62202706U (en) | 1986-06-16 | 1986-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62202706U true JPS62202706U (en) | 1987-12-24 |
Family
ID=30952629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9165086U Pending JPS62202706U (en) | 1986-06-16 | 1986-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62202706U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4216581Y1 (en) * | 1965-12-07 | 1967-09-25 |
-
1986
- 1986-06-16 JP JP9165086U patent/JPS62202706U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4216581Y1 (en) * | 1965-12-07 | 1967-09-25 |