阅读说明：本技术 用于机动车的照明单元 (Lighting unit for a motor vehicle ) 是由 S.弗兰克 于 2020-03-04 设计创作，主要内容包括：本发明涉及一种用于机动车的照明单元,其由至少一个光导和至少一个电路板构成,该电路板具有至少一个发光二极管。电路板和光导彼此固定。根据本发明建议,所述照明单元设计为纵长形并且呈镰刀状地弯曲并且具有在照明单元的长度上延伸的光导和多个长形的、刚性的电路板(4),这些电路板分别配备有多个发光二极管(40),其中,这些电路板(4)相同地构造并且在其纵向方向上沿着所述光导彼此这样排成行,使得发光二极管(40)的光能够垂直于光导的纵向延伸入射到该光导中,并且其中,所述电路板(4)通过电缆(3)相互电连接并且在信号技术上相互连接。(The invention relates to a lighting unit for a motor vehicle, comprising at least one light guide and at least one printed circuit board, which has at least one light-emitting diode. The circuit board and the light guide are fixed to each other. According to the invention, the lighting unit is designed to be elongated and bent in a sickle-shaped manner and has a light guide extending over the length of the lighting unit and a plurality of elongated, rigid printed circuit boards (4) which are each provided with a plurality of light-emitting diodes (40), wherein the printed circuit boards (4) are identically designed and are aligned with one another in the longitudinal direction thereof along the light guide in such a way that the light of the light-emitting diodes (40) can enter the light guide perpendicularly to the longitudinal extension thereof, and wherein the printed circuit boards (4) are electrically connected to one another by means of cables (3) and are connected to one another in a signaling manner.)

1. A lighting unit (1; 1 ') for a motor vehicle, comprising at least one light guide (2) and at least one printed circuit board (4) having at least one light-emitting diode (40), wherein the printed circuit board (4) and the light guide (2) are fastened to one another, characterized in that the lighting unit (1, 1 ') is of elongate design and is bent in a sickle-shaped manner and has a light guide (2) extending over the length (I) of the lighting unit (1, 1 ') and a plurality of elongate, rigid printed circuit boards (4), which are each provided with a plurality of light-emitting diodes (40), wherein the printed circuit boards (4) are of identical design and are aligned with one another in their longitudinal direction along the light guide (2) in such a way that light (L) of the light-emitting diodes (40) can be incident into the light guide (2) perpendicularly to its longitudinal extension, and wherein the circuit boards (2) are electrically connected to one another and are connected to one another in signal technology by means of cables (3).

2. Lighting unit (1, 1') according to claim 1, characterized in that the circuit boards (4) are connected by cables (3) in the region of their opposing ends (E), wherein the opposing ends (E) abut against each other or are at most only opposing at such a small distance that is a multiple smaller than the length of the circuit boards (4).

3. Lighting unit (1, 1') according to claim 1 or 2, characterized in that the outer shape of the circuit board (2) has a curved shape with a radius of curvature (r1, r 2).

4. The lighting unit (1, 1') according to any one of the preceding claims, characterized in that each circuit board (2) has a plurality of driver units (T), wherein each driver unit (T) is configured with a part of the plurality of light emitting diodes (40) of the circuit board (2) for operating the light emitting diodes (40).

5. A lighting unit (1, 1') according to claim 4, characterized in that there are three circuit boards (4) and that 18 light emitting diodes (40) and 3 driver units (T) are arranged on each circuit board (4), wherein each driver unit (T) is provided with 6 light emitting diodes (40), respectively.

6. The lighting unit (1, 1') according to any one of the preceding claims, characterized in that each circuit board (4) has one driver unit (T), wherein all light emitting diodes (40) of the circuit board (4) are assigned to this driver unit (T) for manipulation.

7. Lighting unit (1, 1') according to claim 6, characterized in that there are nine circuit boards (4) and six light emitting diodes (40) are arranged on each circuit board (4), which are assigned to the driver unit (T) for the manipulation.

8. A motor vehicle, characterized in that it has at least one lighting unit (1, 1') according to any one of the preceding claims.

9. There is no claim to use a combination of larger and smaller circuit boards instead of multiple identical circuit boards.

Preferred embodiments of the invention are shown in the drawings and are set forth in detail in the following description in view of the drawings. Other advantages of the invention will also be apparent from this. The same reference numbers in different drawings may also refer to the same, similar, or functionally identical elements. Corresponding or similar features and advantages are realized, even if not repeatedly described or referred to herein. The figures are not, or at least not always, drawn to scale. The proportions and distances may be exaggerated in some of the figures to more clearly highlight features of the embodiments.

In the drawings, which are each schematically:

fig. 1 shows two lighting units with different radii of curvature;

FIG. 2 shows different orientations of rigid, in-line circuit boards according to different radii of the lighting unit and

fig. 3 shows a section taken along section line II in fig. 1 a.

Fig. 1a shows a first embodiment of a lighting unit 1, wherein the lighting unit 1 is arranged below a baffle-like member 10.

The baffle-like component 10 is arranged in the region of the windshield W, only the linear course of which is shown.

The lighting unit 1 extends over the entire length l of the baffle-like member 10. The length l may extend in the region of the windscreen W, for example over a major part of the dashboard (not shown).

The lighting unit 1 is formed here by an elongated (or elongated) light guide 2 (see fig. 2) which is likewise bent in a sickle-shaped manner and to which three circuit boards 4 are fastened, preferably clipped.

The circuit boards 4 are each arranged close to one another in the region of their ends, so that they generally follow the radius r1 of the lighting unit 1 or the curved shape of the light guide 2.

Each circuit board 4 is designed as a rigid circuit board, wherein all three circuit boards 4 have the same radius r 1.

The circuit boards 4 bear with their opposite ends E against one another and thus overall produce the desired radius r 1.

In this exemplary embodiment, each circuit board 4 has three driver modules T for operating the light-emitting diodes 40 arranged on the circuit board 4. In this case, one driver unit T controls exactly six light-emitting diodes 40 in each case. A total of 54 light-emitting diodes can thus be operated by three circuit boards 4 arranged in a row one behind the other and arranged in a sickle-shaped manner below the light entry surface of the light guide 2.

The angular offset α (see fig. 2) of the light-emitting diodes 40, 40' successive in the longitudinal direction l, which is caused by the different angular positions of the circuit board 4 relative to one another, can be compensated at a given position by a corresponding thickness change Δ d of the base body 20 of the light guide 2 in the region of the light entry face 21. Fig. 3 shows a sectional plane of the light-emitting diode 40 and the light-emitting diode 40' immediately following it with an angular offset α.

In fig. 2b, the three circuit boards 4 are shown lined up in succession with a slightly tighter radius of curvature r2, which is necessary for a more strongly curved lighting unit 1 'in the baffle-like member 10'.

As can be seen from fig. 2b, in order to obtain the radius of curvature r2, the opposite ends E of two successive rows of circuit boards 4 are slightly spaced apart from one another. However, this distance is only slight and is many times smaller than the length of each individual circuit board 4.

In contrast to this embodiment, it is also conceivable that not only three rigid printed circuit boards 4, but rather shorter, likewise rigid printed circuit boards are arranged one behind the other by the light guide 2, more precisely preferably in a clamping manner with the light guide (as shown in fig. 2), and are likewise connected to one another by the cable 3 (not shown in detail). Preferably, it is conceivable here for nine circuit boards to be arranged in a row and for each circuit board to have only one driver module T, to which in each case only six light-emitting diodes 40 are assigned, in order to be operated.

The advantage of this solution is an increased flexibility of arrangement compared to the advantage of arranging only three circuit boards 4 in a row in sequence, which is easier to handle.

List of reference numerals

1. 1' Lighting Unit

2 light guide

3 electric cable

4 Circuit board

10 baffle-like component

20 base body

21 light incident surface

22 light exit surface

40 light emitting diode

Offset of angle A

Direction of travel F

L light

longitudinal direction

r1, r2 radius

T driver unit

W windshield

Delta d thickness variation