JPS5874704U

JPS5874704U - ceiling mounted light fixtures

Info

Publication number: JPS5874704U
Application number: JP17001681U
Authority: JP
Inventors: 安達　芳和
Original assignee: 松下電工株式会社
Priority date: 1981-11-14
Filing date: 1981-11-14
Publication date: 1983-05-20
Also published as: JPS6220089Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図ａ、　　ｂは夫々従来例の問題点を示す説明図、
第２図は本考案の一実施例を示す概略縦断面図、第３図
は同上の一部省略概略横断面図、第４図ａ、　　ｂは夫
々本考案の作用を説明する部分拡大断面図であり、１は
天井面、２は器具本体、３は直管螢光ランプ、４はルー
バ、５は横格子、６は縦格子、αは第１遮光角、βは第
２遮光角である。Figures 1a and 1b are explanatory diagrams showing the problems of the conventional example, respectively;
Fig. 2 is a schematic vertical sectional view showing an embodiment of the present invention, Fig. 3 is a partially omitted schematic cross-sectional view of the same as above, and Figs. 4 a and b are partially enlarged sectional views illustrating the operation of the present invention. 1 is the ceiling surface, 2 is the fixture body, 3 is a straight fluorescent lamp, 4 is a louver, 5 is a horizontal lattice, 6 is a vertical lattice, α is the first shading angle, and β is the second shading angle. .

Claims

[Scope of utility model registration request]

A device body that is mounted on the ceiling with the bottom surface open, a straight tube fluorescent lamp installed at the upper part of the device body, and a straight tube fluorescent lamp that is housed in the device body below the straight tube fluorescent lamp. The louver is equipped with a louver whose inner surface is mirror-finished to diffuse the light from the lamp and direct it downward into the room. It is formed into a lattice frame shape by combining a plurality of vertical lattices running in a direction perpendicular to the lattice frame, with the lower ends of both lattices aligned, and the light on the circumference of the straight tube fluorescent lamp that is reflected from the inner surface of each horizontal lattice and then moves downward into the room. Among the rays from each point, the first shading angle of the ray that makes the smallest angle with the horizontal plane, and from each point in the longitudinal direction of the straight tube fluorescent lamp that travels downward in the room after being reflected on the inner surface of each vertical lattice. A ceiling-mounted type in which the inner surface shape of the vertical lattice and the inner surface shape of the horizontal lattice are formed into different shapes so that the second shading angle of the ray that makes the smallest angle with the horizontal plane among the rays of light is - the road surface. lighting equipment.