JPS60174106U

JPS60174106U - lighting equipment

Info

Publication number: JPS60174106U
Application number: JP6200884U
Authority: JP
Inventors: 利典田中; 功前田
Original assignee: 松下電工株式会社
Priority date: 1984-04-25
Filing date: 1984-04-25
Publication date: 1985-11-18

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 the drawing]

第１図はこの考案の一実施例の断面図、第２図はその表
示板の斜視図、第３図はその側面図、第４図はランプ光
の屈折および反射の状態を説明するとともに一部拡大図
を示す説明図、第５図はランプ光の入射点の説明図、第
６図は複数の光線の屈折および反射の状態を説明する説
明図、第７図は光線の全反射点の位置関係を示す説明図
、第８図はその要部拡大図、第９図はレンズを付加した
変形例の説明図、第１０図はアパーチャランプの説明図
、第１１は上下反転し下端に開口部を設けた変形例の断
面図、第１２図および第１３図はさらに多の変形例の断
面図、第１４図は従来例の断面図、第１５図は他の従来
例の説明図である。１．１′・・・器具本体、２，２′・・・ランプ、３゜
３′・・・表示板、４・・・上端傾斜面、５・・・後面
下部傾斜面。１口 ■Fig. 1 is a cross-sectional view of an embodiment of this invention, Fig. 2 is a perspective view of its display board, Fig. 3 is a side view thereof, and Fig. 4 explains the refraction and reflection states of lamp light. Fig. 5 is an explanatory drawing showing the incident point of lamp light, Fig. 6 is an explanatory drawing showing the state of refraction and reflection of multiple light rays, and Fig. 7 is an explanatory drawing showing the total reflection point of the light ray. An explanatory diagram showing the positional relationship, Fig. 8 is an enlarged view of the main part, Fig. 9 is an explanatory diagram of a modified example with a lens added, Fig. 10 is an explanatory diagram of the aperture lamp, and Fig. 11 is an explanatory diagram of the aperture lamp that is upside down and opened at the bottom end. 12 and 13 are cross-sectional views of further modified examples, FIG. 14 is a cross-sectional view of a conventional example, and FIG. 15 is an explanatory diagram of another conventional example. . 1.1'... Appliance body, 2, 2'... Lamp, 3°3'... Display plate, 4... Upper end inclined surface, 5... Rear lower inclined surface. 1 bite■

Claims

[Claims for Utility Model Registration] A display board, a light source that is arranged above the display board and enters the upper end surface of the display board, and - accommodates the display board and the light source to expose the front surface of the display board. The display board has the following formula: % Formula %) angle, θ0
is the value of (α-refraction angle) in the refracted light of the incident light that enters the upper end surface perpendicularly to the horizontal plane, P is the amount of exposure of the device body to the display board in the height direction, and β is the angle of refraction of the display board. Inclination angle of the rear lower side inclined surface with respect to the vertical plane, X2□−
1.Xゎ is the distance between the incident points in the height direction of the light on the front surface i and the rear lower inclined surface inside the display panel, and the refraction angle n
1, 02m = X 2m-16jan02m-IX6)m
+x = X2H (tanθ2□, -tanβ), θ,
(k is an integer greater than or equal to 1) = θo+(k-1)β, (t)1 = (h-ω(tana+cotθ.))t
anβ, θ, = a −5in−” (“5ina). ).