DE2351610A1 - Triangular reflective warning sign for road safety use - has elements with faceted basic and grooved outer surface - Google Patents

Abstract

The reflective warning sign, for use as a hazard indicator on the highway, so as to help prevent traffic accidents, has improved effectiveness in respect of its reflectivity, since its surfaces are designed to reflect adequately even when the light source is not vertical to them. The improvement is achieved by constructing the reflector of elements whose rhomboidal base surface has a triangular section, while the front surface has grooves, which are pref. parallel and V-shaped when seen in cross section.

Description

Societe de Signalisations Automobiles S.E.I.M.A.

11, Chemin des Merisiers Villemoisson sur Orge (Essonne) France

Retro-reflective warning device

So-called warning triangles are already known, which are used for protection stopped or parked vehicles, a corresponding early warning of the passing traffic is a decisive, also legally anchored measure,

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to avoid rear-end collisions as much as possible. Since such warning triangles In order to be sufficiently effective, it should have the largest possible basic shape in use also already known, this, in the event of non-use, can be folded up in the interest of space-saving accommodation to design.

The object of the invention is to use the spatial enlargement in the case of use going beyond improvement of effectiveness to achieve this on the reflector itself, with a simple, stable, protected design a reflector and an effective light reflection also takes place when the light source is located does not extend exactly perpendicular to the reflector surface.

This object is achieved by the invention specified in claim 1.

The subclaims represent an advantageous development of the solution according to the invention.

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The retroreflective effect is a result of such a configuration enlarged. The elements tapering off in three planes at their tip form with a corresponding diamond-shaped base two additional surfaces that increase the light breaking effect. This and the formation of grooves on the front surface of the reflector, through which the formation of grooves, further offset impact surfaces are created, does not necessarily do this required that the beam of the light source is exactly perpendicular to the total reflector surface. The chosen one V-shape leads to surfaces lying at an angle to one another and is easy to handle in terms of production technology. The parallel Arrangement of said grooves leads to orderly, uniform zones of higher reflection intensity, so that with appropriate Use on the legs of a collapsible warning triangle brought into the position of use, even with weaker ones Reflection is given a triangular shape that stands out, the warning symbol is sufficiently clear. Here the individual form

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parallel grooves have a striking luminous ^{! I} Schraf for ".

Further advantages and details of the subject matter of
The invention are explained in more detail below with reference to an exemplary embodiment illustrated in the drawing. Show it:

Fig. 1 is a side view of a reflector in the form of a warning triangle,

FIG. 2 shows a section along line A-A in FIG. 1, on an enlarged scale compared to FIG. 1,

Fig. 3 is a side view and

4 shows a plan view of a reflector element with a three-surface taper in an individual representation.

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A warning triangle is shown in FIG. 1, for example placed on the roadside to secure an obstacle, in particular a breakdown vehicle will.

This reflector is made up of three preferably lengthwise cores Legs 1, 2 and 3 formed which, with their broad surfaces abutting one another, are connected to form a triangle. as Connecting elements are provided in two triangular points joint axes 4 and 5, while with respect to the third Triangle point a hook engagement device 6 is applied to the connection of the free leg ends.

Each individual element has a row of hairs on its rear surface arranged Re Ifectors ending in a three-surface body tip lenient e 7. The latter have a base 'surface' in the form of a diamond, the corner points of which are designated ABDC. These elements are designed to allow reflection a light beam impinging on the front surface 8 is also reflected if it is not exactly or approximately meets perpendicularly on this surface.

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The triangular areas formed by the points BSE, BKF, FFE meet at an angle of 90 degrees in the common point. The two other areas are limited by the points AEB and CFD. The base edge of this latter Triangular areas run in the same way as the two corners or sides AD and CD of the diamond ABDC. The triangular areas AED and CFD extend perpendicular to the plane of diamond ABCD. The individual reflector elements are rooted in a common one Bar and are thus closely connected to each other in rows. The reflector elements of one row run in the opposite direction with respect to the adjacent rows. The output body of the reflector element is a pyramid with a rhomboid base, inclined Central axis and tip capped in such a way that the corresponding cut surface starts from the diamond tip D tapering steeply in the middle of the body.

From the rear surface of the legs having the three-surface pointed bodies extend rearwardly directed edge strips 9 ^f , 9 ″. A plate 10 forming a cover is applied to the latter. This cover plate prevents it from moving

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for example, dust is deposited in the interstices or »valleys of the three-surface pointed bodies.

Each individual reflector element, i.e. each leg 1, 2 and 3, is provided with grooves that meet the one on the front surface 8 Refract light from a light source (not shown) so that the reflector is also perceived, i.e. Reflects light when the light source is essentially in the optimal direction to the reflector.

These roles are essentially V-shaped. The V-opening lies in the direction of the front surface 8 or front plane and are denoted by 11, 12 and 13 (see FIG. 2). they are designed in the manner of the stabilization grooves on skis.

The individual grooves run parallel at a certain distance to each other and in the direction of extent of the reflector elements 7, which extend over the entire rear surface of the individual element 3.

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In the embodiment of the invention, the form on the Front surface 8 of the legs 1, 2 and 3 of the warning triangle extending Grooves a parallel hatching on the base surface of the same orienting, so with respect to of the course of the reflector element rows of legs 1 and 2, care is taken to ensure that they are aligned accordingly. In the position of use (FIG. 1), the grooves 14 of the leg 1 run not only parallel and at the same height to the grooves 15 of the leg 2, but also parallel to the grooves 11, 12 and 13 of the leg 3. In the present case, the leg 3, xvelcher has the longitudinal grooves 11, 12 and 13, designed so that the warning triangle can be placed on the floor when in use.

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Claims (5)

15 263/264 * October 11, 1973 Expectations Γ 1.) / reflector, characterized in that it consists of several interconnected elements (7), each of which has a diamond-shaped base (ABCD) a three-surface Has body tip, and that the reflector has grooves on its pointed body-free front surface (8). 2.) Reflector according to claim 1, characterized in that the grooves are V-shaped as seen in cross section. 3.) Reflector according to claim 1, characterized in that the grooves parallel to that extending on the reflector rear surface Pointed body row lie. 4.) Reflector according to claim 3, characterized in that it is designed as a warning triangle, the three legs (1,2,3) on one surface of reflector elements (7) and on the other surface (8) have grooves in such a way that they are parallel to one another in the position of use of the warning triangle get lost. 509817/0125 -Ιβ ·) 15 263/264 ^ - 11.10.1973 5.) Reflector according to claim 1, characterized in that the three-surface tapered pointed body on their Form a diamond point two further triangular surfaces (ADE, CFD), which are perpendicular to the diamond plane and whose baseline coincides with the diamond edges (AD, CD). 509817/0125 L e e rs e ί ί e