CN210511473U

CN210511473U - Lamp for vehicle and vehicle with lamp

Info

Publication number: CN210511473U
Application number: CN201920720599.4U
Authority: CN
Inventors: 韩笑; 邬斯华
Original assignee: Valeo Lighting Hubei Technical Center Co Ltd
Current assignee: Valeo Lighting Hubei Technical Center Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-05-12
Anticipated expiration: 2029-05-20

Abstract

The utility model relates to a vehicle that is used for lamps and lanterns of vehicle and has this lamps and lanterns. The lamp has: a light source (10); a reflective structure (20) that receives and reflects light emitted by the light source (10); and a light exit structure (30) through which light emitted from the light source (10) exits outward, wherein the reflection structure (20) has a first sub-reflection structure (21) and a second sub-reflection structure (22) which respectively receive a part of the light emitted from the light source (10) and reflect the received light, and wherein the second sub-reflection structure (22) also receives and reflects the light reflected by the first sub-reflection structure (21).

Description

Lamp for vehicle and vehicle with lamp

Technical Field

The utility model relates to a vehicle that is used for lamps and lanterns of vehicle and has this lamps and lanterns.

Background

From CN102102840 a lighting module for a lighting device of a motor vehicle is known, which comprises a plurality of semiconductor light sources for emitting light, at least two reflection areas for reflecting the light emitted by the light sources, a plate-shaped separating element. In this case, the separating element is arranged between the at least two reflection regions, and the light source is fastened to the separating element in such a way that a main emission direction of the light source extends substantially perpendicularly to an optical axis of the light-emitting module. The reflection regions are assigned to separate partial reflection elements which are arranged and fixed separately from one another on the support element.

The structure of the light emitting module is relatively complex, and the light emitting module is not beneficial to heat dissipation under the condition that a plurality of high-power light sources are arranged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lamps and lanterns for vehicle, it can realize the high utilization ratio of the light that the light source sent with simple structure under the condition that satisfies the legislation requirement.

In order to achieve the above object, a luminaire is provided with: a light source; a reflective structure that receives and reflects light emitted by the light source; the light source comprises a light emitting structure, wherein light emitted by the light source is emitted outwards through the light emitting structure, the reflecting structure is provided with a first sub-reflecting structure and a second sub-reflecting structure, the first sub-reflecting structure and the second sub-reflecting structure respectively receive part of the light emitted by the light source and reflect the received light, and the second sub-reflecting structure also receives and reflects the light reflected by the first sub-reflecting structure.

Here, a first propagation direction of light directly from the light source reflected by the second sub-reflecting structure is different from a second propagation direction of light from the light source reflected by the first sub-reflecting structure reflected by the second sub-reflecting structure. By the combination of light propagating in the first propagation direction and the second propagation direction, which after passing through the light exit structure, can produce a desired light distribution.

The first sub-reflecting structure and the second sub-reflecting structure may be arranged one above the other or side by side. For example, in the case where the lamp is installed in a vehicle, the first sub reflection structure and the second sub reflection structure may be arranged one on top of the other with reference to the height direction of the vehicle, or they may be arranged side by side with reference to the lateral or longitudinal direction of the vehicle.

According to an embodiment of the present invention, the first sub-reflecting structure has a reflecting surface of an ellipsoidal surface patch shape, and the second sub-reflecting structure has a reflecting surface of a paraboloidal surface patch shape, wherein the light source is arranged at the first focus of the first sub-reflecting structure, the third focus of the second sub-reflecting structure coincides with the first focus, and the second focus of the first sub-reflecting structure is between the first focus and the reflecting surface of the second sub-reflecting structure. Based on the geometric properties of the elliptical surface and the paraboloid, in the scheme, part of light emitted by the light source is reflected by the first sub-reflection structure of the elliptical surface patch, focused towards the second focus and then reaches the second sub-reflection structure of the paraboloid patch, and is reflected by the second sub-reflection structure, diffused towards different directions and continuously transmitted; another part of the light emitted by the light source directly reaches the second sub-reflecting structure in the shape of the paraboloid surface sheet, and is converted into parallel light after being reflected to continue to propagate. Thus, even if the light exit surface of the light exit structure is not subjected to any optical structural processing, a predetermined light distribution can be realized. For example, for a turn signal lamp, the light distribution performance should meet the requirements of the standard GB 17509. Here, the expression "the light source is arranged at the focal point" is not to be understood merely that the light source falls exactly at the focal point, but also that the light source deviates slightly from the focal point, i.e. the light source is close to the focal point.

When the first sub-reflecting structures are in the form of ellipsoidal panels and the second sub-reflecting structures are in the form of parabolic panels, they can be formed by guiding or rotating the ellipsoids and parabolas along a given generatrix or axis of rotation, respectively.

According to an embodiment of the present invention, the first sub-reflecting structure and the second sub-reflecting structure are integrally formed. For example, they may be integrally formed by injection molding, thereby reducing the number of components and simplifying assembly.

According to an embodiment of the utility model, the light-emitting structure is equipped with miniature optical structure to the light is diffused. Illustratively, the micro-optical structure is an array of micro-pillow structures, an array of micro-lenses, or a dermatoglyph structure. The light exit structure is an at least partially light transmissive structure. In particular in the case of a micro-optical structure arranged in the manner described above, the outgoing light beam has a corresponding angular range and has the desired properties.

According to an embodiment of the present invention, a hollow space is formed between the light reflection structure and the light exit structure. For this purpose, the luminaire may have a hollow body with a light-reflecting structure and a light exit structure, wherein the light exit structure faces the light-reflecting structure. This reduces the propagation loss of light compared to a solid body, since only air is present between the light exit structure and the light reflecting structure.

According to an embodiment of the present invention, the light source is a light emitting diode. In this case, the light emitted by the light-emitting diode preferably falls entirely on the light-reflecting structure. The light emitting diodes may be red light emitting diodes, yellow light emitting diodes, white light emitting diodes, or other colored light emitting diodes.

According to an embodiment of the present invention, the light emitting structure is colored, for example, yellow, red or other colors, i.e., is a coloring member.

According to an embodiment of the invention, the reflective structure is formed by a paint layer or a metal coating, e.g. an aluminium coating.

According to an embodiment of the present invention, the lamp is a turn signal lamp, a brake lamp, a daytime running lamp, a backup lamp or a position lamp.

The utility model also provides a vehicle, it has above-mentioned lamps and lanterns.

Drawings

The invention is further elucidated below with the aid of the accompanying drawing. Wherein:

fig. 1 schematically shows a schematic view of an embodiment of a luminaire 1 according to the invention;

fig. 2 schematically shows a schematic view of another embodiment of a luminaire 1 according to the invention.

Detailed Description

Embodiments of the present invention are exemplarily described below. As those skilled in the art will appreciate, the illustrated embodiments may be modified in various different ways without departing from the inventive concept. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive. In the following, the same reference numbers generally indicate functionally identical or similar elements.

In the luminaire 1 shown in fig. 1, only the main elements constituting the luminaire, i.e. the light source 10 and the reflective structure 20, are shown in a simplified manner. It is noted here that the luminaire further comprises a carrier (e.g. a PCB board) for the light source 10, a heat sink for the light source, an outer lens, and a housing, etc., all of which are not shown. It should also be noted that only one light source 10 is shown here, although a plurality of light sources may also be provided. Furthermore, the luminaire 1 shown in fig. 1 can be seen as one unit, which can be formed side by side as one module.

The reflective structure 20 of the luminaire 1 comprises a first sub-reflective structure 21 and a second sub-reflective structure 22, which are arranged one above the other. A part of the light emitted by the light source 10 directly reaches the first sub-reflecting structure 21, as shown by the solid lines in fig. 1, and a part of the light emitted by the light source 10 directly reaches the second sub-reflecting structure 22, as shown by the dotted lines, wherein the light reaching the first sub-reflecting structure 21 is reflected towards the second sub-reflecting structure 22.

Preferably, the light emitted by the light source falls on both sub-reflecting structures of the reflecting structure 20 to achieve maximum utilization of the light.

The reflective structure 20 is preferably composed of plastic, which may be painted and/or metallized, for example with a paint layer or a metal coating applied, to achieve reflective properties.

The first sub-reflecting structures 21 are in the form of elliptical patches and the second sub-reflecting structures 22 are in the form of parabolic patches. Although the two sub-reflecting structures are shown spaced apart in the drawings, in practice they are joined to each other seamlessly, for example as smoothly as possible in transition. In particular, the first sub-reflecting structure 21 and the second sub-reflecting structure 22 are integrally formed. The first sub-reflecting structure 21 has a first focal point and a second focal point, and the second sub-reflecting structure 22 has a third focal point, wherein the first focal point of the first sub-reflecting structure 21 and the third focal point of the second sub-reflecting structure 22 at least substantially coincide, the second focal point of the first sub-reflecting structure 21 is located between the first focal point and the optical surface of the second sub-reflecting structure 22, and the light source is located at the coinciding focal point.

In fig. 1, light of the light source 10 directly reaching the first sub-reflecting structure 21 is denoted by R1, and light directly reaching the second sub-reflecting structure 22 is denoted by R2. Since the light source is located at the common focal point of the first sub-reflecting structure 21 of the ellipsoidal panel shape and the second sub-reflecting structure 22 of the parabolic panel shape, the light reflected by the first sub-reflecting structure 21 is first focused toward its second focal point, which is denoted by F in fig. 1. The second focal point is not arranged on the second sub-reflecting structure 22, but is arranged at a predetermined distance therefrom, so that light focused at the second focal point F will again scatter and propagate to reach the second sub-reflecting structure, preferably to a central region of the second sub-reflecting structure, and be reflected by the second sub-reflecting structure towards a light exit structure (not shown in fig. 1) of the luminaire, the propagation direction of the reflected light being exemplarily shown by R11, R12, R13, which will be further explained below.

The light of the light source 10 directly reaching the second sub-reflecting structure 22 is denoted by R2 and after reflection by the second sub-reflecting structure 22 propagates in substantially the same direction, as indicated by propagation direction E in fig. 1, i.e. is converted into parallel light beams exiting towards the light exit structure. The direction of propagation E may correspond to the longitudinal direction of the vehicle, which may also be understood as the main direction of propagation of the light emitted by the lamp.

The propagation directions R11, R12, R13 mentioned above are different from the propagation direction E, for example, the propagation direction R11 propagates upward with respect to the propagation direction E, the propagation direction R12 propagates downward with respect to the propagation direction E, and the propagation direction R13 propagates rightward with respect to the propagation direction E. In short, with the above-described structure, it is possible to realize a light distribution within a predetermined angle range with respect to the longitudinal direction of the vehicle to realize a desired light distribution function. Here, the surface of the light exit structure may be free of any special optical treatment.

The luminaire 1 may have a hollow cavity, and the reflective structure 20 may form a part of the hollow cavity. One side surface of the cavity body forms a light reflecting surface 22a of the reflecting structure 20, and the structure opposite to the light reflecting surface 22a is a light emitting structure. The light reflecting surface 22a and the light exit structure are connected by

side walls

22b, 22 c. In this case, light is less lost when propagating through the inner space of the hollow cavity body than in a solid light guiding structure.

In fig. 2, another embodiment of a luminaire 1' according to the invention is shown. Here, the structure of the lamp 1 'is substantially the same as that of the lamp 1 shown in fig. 1, and only the differences between the lamps 1' are described to avoid redundancy.

The luminaire 1' has an optically processed light exit structure 30. Specifically, a micro structure, such as a micro pillow-shaped structure array, a micro lens array, or a dermatoglyph structure, is disposed on the light-emitting surface to further diffuse light. The light exit structure 30 is made of an at least partially light transmissive material.

Although it is shown in fig. 2 that the micro-structures are arranged at a side of the light exit structure 30 facing away from the second sub-reflective structure 22, they may also be arranged at a side facing the second sub-reflective structure 22.

The light exit structure 30 may be a transparent member.

The light exit structure 30 may also be colored, for example, the light exit structure 30 may also have a red color, a yellow color, or other suitable colors.

The light source 10 is in particular a light emitting diode. The light source 10 may be a light emitting diode that emits white, red, yellow, or other color light, as desired.

Therefore, the color of the light emitting structure or the light source can be appropriately selected according to the specific application of the lamp.

Although only one light source is shown in the figures, a plurality of light sources may also be used, which are arranged around the above-mentioned focal point.

The luminaire shown in the figures can be provided as one unit, several units being arranged side by side, for which purpose the side walls between adjacent units are eliminated. A plurality of units arranged side by side can share one light-emitting structure, so that a long light-emitting effect is presented.

The lamp can be used as a turn signal lamp, a brake lamp, a backup lamp, a position lamp, a daytime running lamp, and the like of a vehicle according to the color appearing when lit as seen from the outside.

Through the structure of the lamp, even when the light source is far away from the corresponding light reflection structure, the light emitted by the light source can be almost completely received through the light reflection structure, and the received light is reflected towards the light reflection structure, so that the high utilization rate of the light is realized. This also enables a flexible arrangement of the light sources, e.g. the light sources may share a light source carrier with light sources for other functions to further facilitate mounting and to optimize the design in terms of heat dissipation.

The present invention is not limited to the above configuration, and various other modifications may be adopted. While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the present invention should be limited only by the attached claims.

Claims

1. A luminaire (1, 1') for a vehicle having: a light source (10); a reflective structure (20) that receives and reflects light emitted by the light source (10); -a light exit structure (30), through which light emitted by the light source (10) exits outwards (30), characterized in that the reflecting structure (20) has a first sub-reflecting structure (21) and a second sub-reflecting structure (22), which respectively receive a part of the light emitted by the light source (10) and reflect the received light, wherein the second sub-reflecting structure (22) also receives and reflects light reflected by the first sub-reflecting structure (21).

2. A luminaire (1, 1') according to claim 1, characterized in that the first sub-reflecting structure (21) has an elliptical facet-shaped reflecting surface and the second sub-reflecting structure (22) has a parabolic facet-shaped reflecting surface, wherein the light source is arranged at a first focus of the first sub-reflecting structure (21), a third focus of the second sub-reflecting structure (22) coincides with the first focus, and a second focus of the first sub-reflecting structure (21) is between the first focus and the reflecting surface of the second sub-reflecting structure (22).

3. A luminaire (1, 1') according to claim 2, characterized in that the first sub-reflecting structure (21) and the second sub-reflecting structure (22) are integrally formed.

4. A luminaire (1, 1') as claimed in claim 2, characterized in that the light exit structure (30) is provided with micro-optical structures to diffuse the light.

5. A luminaire (1, 1') according to claim 4, characterized in that the micro-optical structure is an array of micro-pillow structures, an array of micro-lenses or a dermatoglyph structure.

6. A luminaire (1, 1') as claimed in any one of claims 1 to 5, characterized in that a hollow space is formed between the reflecting structure (20) and the light exit structure (30).

7. A luminaire (1, 1') as claimed in any one of claims 1 to 5, characterized in that the light source is a light emitting diode.

8. A luminaire (1, 1') as claimed in any one of claims 1 to 5, characterized in that the light exit structure (30) is a colored piece.

9. A luminaire (1, 1') as claimed in any one of claims 1 to 5, characterized in that the reflective structure (20) is formed by a paint layer or a metal coating.

10. A light fixture (1, 1') according to any of claims 1-5, characterized in that the light fixture is a turn light, a brake light, a daytime running light, a back-up light or a position light.

11. A vehicle having a luminaire (1, 1') according to any one of claims 1 to 10.