CZ306475B6 - An elliptical light conducting module - Google Patents

Abstract

The elliptical light conducting module, designed especially for rear tail lamps and headlamps of motor vehicles, is constituted by the plate secondary part (4) passing around its outer circumference into the tertiary part (5) having the form of a rim, arranged in the direction of orientation of the active area of the plate of the secondary part (4), while on the opposite area of the plate of the secondary part (4) there is formed the cylindrical primary part (2) with the front recess (8) onto which the light source (1) is adjacent, and coaxially with the primary part (2) there is, in the active surface of the plate of the secondary part ( 4), adjusted the conical recess (3) forming the Y - fork, where the outer peripheral inclined surface (6), arranged between the secondary part of the plate (4) and the tertiary part (5), has at least its part provided with a set at least two reflective pins (7), for ensuring reflection of the light back into the secondary part (4), thereby covering the active area of the light module also at the point of its shielding by the recess (3).

Description

The invention relates to an elliptical light guide module, intended in particular for rear tail lamps and headlights for motor vehicles.

Prior art

EP 1 881 265 A1 discloses a light guide module consisting of a plate secondary part extending over its entire outer circumference into a tertiary part having the shape of a rim arranged in the direction of orientation of the active surface of the plate secondary part. On the opposite surface of the plate secondary part, a cylindrical primary part is then formed with a front recess, to which the light source abuts. A conical recess forming a Y-branch is provided coaxially with the primary part in the active area of the plate secondary part. Between the plate secondary part and the tertiary part, an outer circumferential inclined surface is provided, on which a set of facets is constructed, to increase the reflective surface reflecting light radiation into the tertiary part of the module.

The disadvantage of this construction of the light guide module is in particular that the luminous flux emerging from the active surface of the plate secondary part is not sufficiently homogeneous, especially in the shielded areas around the Y-branch (conical recess).

The essence of the invention

The above-mentioned disadvantages are largely eliminated by an elliptical light guide module, intended in particular for rear tail lamps and motor vehicle headlights. The module is formed by a plate secondary part, passing along its entire outer circumference into a tertiary part, which has the form of a rim arranged in the direction of orientation of the active surface of the plate secondary part. On the opposite surface of the plate secondary part, a cylindrical primary part is formed with a front recess to which the light source abuts, and a conical recess forming a Y-branch is provided coaxially with the primary part in the active surface of the plate secondary part. According to the invention, the essence of which consists in that between the plate secondary part and the tertiary part the outer circumferential inclined surface is provided with a system of at least two reflective pins to ensure light reflection back to the secondary part and thus cover the active surface of the module with light at its location. shielding by conical recess.

The essence of this design solution further lies in the fact that the module is provided with at least two cylindrical primary parts, each of which is provided with one light source, the light sources being light emitting LEDs, which may be of different colors.

It should also be considered essential that the planes forming the reflective pin and ensuring its functionality do not necessarily form a right angle with each other.

The advantage of this light guide construction is that it modulates that the luminous flux emerging from the active surface of the plate secondary part is sufficiently homogeneous, even in the shielded areas around the Y branch (conical recess).

Explanation of drawings

The accompanying drawings show a possible embodiment of an elliptical light guide module according to the invention, in which FIG. 1 is an axonometric view of a light guide module se

- 1 CZ 306475 B6 two light sources and in Fig. 2 is a sectional view of the light guide module at the location of its light source with the indicated light beam paths.

Examples of embodiments of the invention

As can be seen from FIG. The elliptical light guide module is formed by a plate secondary part 4 extending along its entire outer circumference into a tertiary part 5 having the shape of a rim arranged in the orientation direction of the active surface of the plate secondary part 4. A cylindrical primary part is formed on the opposite surface of the plate secondary part 4. 2 with a front recess 8 (see FIG. 2), to which the light source 7 abuts. It is advantageous if the module is provided with two cylindrical primary parts 2, each of which is adjacent to one light source 1 (preferably different in color from each other), in this case a light emitting LED.

Coaxially with each primary part 2, a conical recess 3 forming a Y-branch is provided in the active area of the plate secondary part 4. The outer circumferential inclined surface 6 arranged between the plate secondary part 4 and the tertiary part 5 is provided at least on some of its parts with a set of reflective pins 1 serving to ensure the reflection of light coming from the secondary part 4 back to the secondary part 4 and thus covering the active surface of the module with light. even at the point of its shielding by recesses 3 (see Fig. 2).

The reflective pins 7 are designed in such a way that there is no incidence of light reflected by them with no conical recess 3.

Industrial applicability

The light guide module according to the invention can be used in particular for illuminating motor vehicles both in their exterior and in their interior, and wherever light is expected to be emitted by the active surface of the module in several colors.

Claims (4)

PATENT CLAIMS An elliptical light guide module, intended in particular for rear end lamps and motor vehicle headlamps, consisting of a plate secondary part (4) extending over its entire outer circumference into a tertiary part (5) having the shape of a rim arranged in the direction of orientation of the plate secondary surface. part (4), wherein on the opposite surface of the plate secondary part (4) a cylindrical primary part (2) is formed with a front recess (8), to which the light source (1) abuts, and coaxially with the primary part (2) is in active a conical recess (3) forming a Y-branch is provided on the surface of the plate secondary part (4), characterized in that the outer circumferential inclined surface (6) provided between the plate secondary part (4) and the tertiary part (5) has at least its part provided with a system at least two reflective pins (7), to ensure the reflection of light back to the secondary part (4) and thus to cover the active area of the module with light also at the place of its shielding by the recess (3). Elliptical light guide module according to claim 1, characterized in that it is provided with at least two cylindrical primary parts (2), each of which is provided with one light source (1). Elliptical light guide module according to Claim 1 or 2, characterized in that the light sources (1) are light-emitting LEDs. -7 CZ 306475 B6 The elliptical light guide module according to claim 1, characterized in that the planes forming the reflective pin (7) do not form a right angle with each other.