DE3925999A1 - Signal lamp with ellipsoidal reflector - has cover panel deviating in shape and with smaller light outlet surface compared with that of reflector - Google Patents

Abstract

A light panel (4) with optics (3) is arranged in the light outlet direction of the reflector (1) in front of the second focal point (F2) and is designed so that the optics (3) in its central region broadens the light to run nearly parallel. In its outer regions the light disperses less strongly and in the light outlet direction of the optic panel (4), a cover panel (6) is connected. The cover panel (6) is equipped with light-scattering optical elements. The light panel (4) has a section (5) without optics through which the light rays emerge at a larger angle w.r.t. the optical axis (X). USE/ADVANTAGE - Signal light. Gives high concn. of light in optical axis and required side scatter.

Description

The invention relates to a signal lamp, one in the Shape deviating and in the size of the light exit surface smaller cover plate opposite the light exit surface of the reflector.

It is the case with signal lights of a conventional type required that the cover plate be substantially of the shape of the reflector is adjusted. That means that the Cover disc must not be smaller than that Diameter or the light exit surface of the reflector, because otherwise not all of the reflector reflected light can pass through the cover plate.

The object of the invention is one with a equipped with a rotationally symmetrical reflector and opposite the light exit surface of the reflector in the Deviating and smaller cover plate provided lamp so that the entire from Reflector reflected light that passes through the cover plate Reflector the light emitted by the light source in a large solid angle and the lamp in the optical axis has a high light intensity. At the same time, however, there should be sufficient side scatter be given to the lamp, which is for side scatter already used light from the reflector the desired one Basic direction is given.

This object is achieved in that the Light source in the first focus of an ellipsoidal Reflector is arranged and in front of the light exit the second focal point one with optical means Lens is arranged, the optical means so are carried out that the light in their central area expand almost parallel and in their  Expand the light less outside and that in Direction of light exit of the optic disc connected one Cover plate is arranged, which with light-scattering, optical elements is occupied. Another advantage of this Invention is to be seen in that by Ellipsoid reflector detects light in a large solid angle and the reflected light with the help of the lens and a high optical means in the optical axis Experiences concentration, the rays being close to the optical Axis should be directed almost parallel.

To increase the light angle of the luminaire, is advantageously in the occupied with optical means Lens arranged a window without optical means, whereby the light in this area of the lens is none Experiences widening and thus the light rays in one emerge larger angle to the optical axis.

The invention is based on a signal lamp described lamp described and in the drawing explained.

Show it

Fig. 1 is a signal lamp in front view,

Fig. 2 is a signal light according to the section AA and

Fig. 3 after the section line BB.

In the drawing, there is a signal lamp with an ellipsoidal reflector ( 1 ) of an incandescent lamp ( 2 ) arranged in the first focal point (F 1 ) of the ellipsoidal reflector ( 1 ) and in the light exit direction before the second focal point (F 2 ) which closes the reflector opening ( 1 ) , arranged with optical means ( 3 ) optical disc ( 4 ). There is a window ( 5 ) without optical means in the optical disc ( 4 ). Towards the front, the signal lamp closes a cover disk ( 6 ), which is seen in the direction of travel and is located behind the second focal point (F 2 ) of the ellipsoidal reflector ( 1 ). The cover plate ( 6 ) is covered with light-scattering, optical means ( 7 ) on the inside. In addition to the reflector ( 1 ), a position light ( 7 ) with a separate reflector ( 8 ) is closed off by an additional light pane ( 9 ), the position light ( 7 ), reflector ( 8 ) and additional light pane ( 9 ) being concealed behind the cover pane ( 6 ) are. A frame part ( 10 ) represents the connection between reflector ( 1 ) and cover plate ( 6 ).

The beam path within the signal lamp is designed such that the light beams are widened almost parallel through the optical means ( 3 ) of the optical disk ( 4 ) in the central region (f), while the light beams (a, b, c), for example, are less in the outer regions be greatly expanded. The result is that the rays (a, b, c) do not intersect on the optical axis X at the point (F 2 ), but outside the optical axis X and behind the point (F 2 ). In order to increase the angle of light emission in a certain area, the light rays (d, e) that fall through the window ( 5 ) do not expand and thus take their normal course at a larger angle to the optical axis X and thus go unaffected by optical means through the second focal point (F 2 ) in order to ultimately be scattered in the cover plate ( 6 ) by the optical means ( 7 ).

Claims (2)

1.Signal lamp which has a cover disc ( 6 ) which is different in shape and smaller in size from the light exit surface than the light exit surface of the reflector ( 1 ), with a light source ( 2 ) which, in the first focal point (F 1 ), of an ellipsoidal reflector ( 1 ) is arranged and in the light exit direction in front of the second focal point (F 2 ) a lens ( 4 ) is arranged with optical means ( 3 ), the optical means ( 3 ) are designed so that they in their central region (f) Expand the light running almost parallel and expand the light less strongly in its outer areas and that a cover disk ( 6 ) is arranged downstream of the optical disk (4) and is covered with light-scattering, optical elements ( 7 ). 2. Signal lamp according to claim 1, characterized in that in the optical disc ( 3 ) occupied lens ( 4 ) there is a window ( 5 ) without optical means through which the light rays emerge at a larger angle to the optical axis X.