JPS6451204U - - Google Patents
Info
- Publication number
- JPS6451204U JPS6451204U JP14558487U JP14558487U JPS6451204U JP S6451204 U JPS6451204 U JP S6451204U JP 14558487 U JP14558487 U JP 14558487U JP 14558487 U JP14558487 U JP 14558487U JP S6451204 U JPS6451204 U JP S6451204U
- Authority
- JP
- Japan
- Prior art keywords
- surface section
- optical axis
- starting point
- reflective surface
- rectangular
- 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
- 230000003287 optical effect Effects 0.000 claims 4
- 238000007796 conventional method Methods 0.000 description 1
Description
第１図はこの考案に係わる角形投光照明器具の
一実施例を示す断面図、第２図は従来技術により
反射板を一体形成した場合に予想される反射板の
形状を示す断面図である。
図において、０はランプ中心、１は反射板、１
１は第一の放物面、１２は第二の放物面である。
なお、各図中同一符号は同一または相当部分を示
す。
FIG. 1 is a cross-sectional view showing an embodiment of a rectangular floodlight according to this invention, and FIG. 2 is a cross-sectional view showing the shape of a reflector that is expected to be formed integrally with the conventional technique. . In the figure, 0 is the center of the lamp, 1 is the reflector, 1
1 is a first paraboloid, and 12 is a second paraboloid.
Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
する角形投光照明器具において、上記反射板を、
上記光軸より上方側に始点を位置させた一つの放
物面で形成された第一の反射面部と、この第一の
反射面部の始点に始点を連続させ、全部または大
部分が上記光軸方向より下方に反射光を照射可能
で、かつ焦点を上記ランプの中心に位置させた１
個または複数個の連続した放物面で形成された第
二の反射面部とで構成し、かつ上記第一の反射面
部の終点と上記第二の反射面部の終点とを結ぶ線
を上記光軸との交点を中心に時計方向に傾けたこ
とを特徴とする角形投光照明器具。 (2) 第二の反射面部の始点側端部は円弧面に形
成されていることを特徴とする実用新案登録請求
の範囲第１項記載の角形投光照明器具。[Claims for Utility Model Registration] (1) In a rectangular floodlight fixture having a reflector whose optical axis is aligned with the center of the lamp, the reflector is
A first reflecting surface section formed of a paraboloid with a starting point located above the optical axis, and a starting point continuous to the starting point of this first reflecting surface section, and the entire or most part is connected to the optical axis. 1 which can emit reflected light downward from the direction and whose focal point is located at the center of the lamp.
and a second reflective surface section formed by one or more continuous paraboloids, and the optical axis is defined by a line connecting the end point of the first reflective surface section and the end point of the second reflective surface section. A rectangular floodlight fixture characterized by being tilted clockwise around the intersection with the (2) The rectangular floodlighting device according to claim 1, wherein the end of the second reflective surface portion on the starting point side is formed into an arcuate surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14558487U JPS6451204U (en) | 1987-09-24 | 1987-09-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14558487U JPS6451204U (en) | 1987-09-24 | 1987-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6451204U true JPS6451204U (en) | 1989-03-29 |
Family
ID=31414304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14558487U Pending JPS6451204U (en) | 1987-09-24 | 1987-09-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6451204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011129473A (en) * | 2009-12-21 | 2011-06-30 | Panasonic Electric Works Co Ltd | Lighting fixture |
-
1987
- 1987-09-24 JP JP14558487U patent/JPS6451204U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011129473A (en) * | 2009-12-21 | 2011-06-30 | Panasonic Electric Works Co Ltd | Lighting fixture |
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