Lighting devices and motor vehicles

Abstract

An embodiment of the present invention provides a lighting device and a motor vehicle. The lighting device includes: at least one main light source, the main light source is used to emit main lighting light; at least one auxiliary light source, the auxiliary light source is used to emit auxiliary lighting light or auxiliary signal indicator light; and a common reflector, the common reflector is shared by the main light source and the auxiliary light source, and is configured to project the main lighting light emitted by the main light source and the auxiliary lighting light or auxiliary signal indicator light emitted by the auxiliary light source to the outside of the lighting device.

Description

Technical Field

[0001] The invention relates to a lighting device and a motor vehicle comprising a lighting device. Background Art

[0002] Lighting devices are widely used in various fields. For example, motor vehicles need lighting devices such as headlights to ensure safe driving. Various types of headlights are often needed on motor vehicles to achieve different functions. In current motor vehicles, different headlights are independently set. For example, high beams, low beams, daytime running lights, position lights, turn signals, etc. all have their own optical systems, so each occupies an independent space. In this way, when the light source of a headlight of a motor vehicle (such as daytime running lights, position lights, turn signals, etc.) is turned on, only the part where the headlight is located in the entire headlight module looks bright, while the parts where other headlights that are in the off state (such as high beams, low beams, etc.) are located are dark. Summary of the invention

[0003] The object of the present invention is to provide a lighting device which can make better use of the components of the original lighting device by simply setting additional devices, so that other road users (such as vehicle drivers, pedestrians, etc.) can more easily notice the vehicle, thereby further improving driving safety and realizing redundant functions at the same time.

[0004] The present invention also aims to provide a motor vehicle comprising the above lighting device.

[0005] An embodiment of the present invention provides a lighting device, comprising:

[0006] at least one main light source, the main light source being used to emit main illumination light;

[0007] at least one auxiliary light source, the auxiliary light source being used to emit auxiliary illumination light or auxiliary signal indication light; and

[0008] A common reflector is shared by the main light source and the auxiliary light source and is configured to project the main illumination light emitted from the main light source and the auxiliary illumination light or auxiliary signal indication light emitted from the auxiliary light source to the outside of the illumination device.

[0009] In one embodiment, the lighting device also includes a light source supporting device, which is used to support a main light source, and the auxiliary light source is located outside the outer periphery of the common reflector. The light source supporting device is provided with a reflecting surface on the side facing the common reflector, and the reflecting surface is arranged to receive auxiliary lighting light or auxiliary signal indication light from the auxiliary light source and reflect it toward the common reflector.

[0010] In one embodiment, the lighting device further includes a collimator, which is located between the auxiliary light source and the reflecting surface in the optical path of the auxiliary lighting light or the auxiliary signal indication light, and is arranged to collimate the auxiliary lighting light or the auxiliary signal indication light before the auxiliary lighting light or the auxiliary signal indication light is emitted toward the reflecting surface.

[0011] In an embodiment, at least a majority of the collimator is located outside the periphery of the common reflector.

[0012] In one embodiment, the collimator comprises a collimating lens or a collimating reflector.

[0013] In one embodiment, a plurality of auxiliary light sources and a plurality of collimators respectively corresponding to the plurality of auxiliary light sources are provided, and the plurality of collimators are arranged to face the reflective surface of the light source supporting device.

[0014] In one embodiment, the reflective surface is provided with a light distribution portion, and the light distribution portion is arranged to diffuse the auxiliary illumination light or the auxiliary signal indication light from the auxiliary light source.

[0015] In one embodiment, the lighting device further comprises a light source supporting device, and the light source supporting device is arranged to support the main light source and the auxiliary light source.

[0016] In one embodiment, the main light source and the auxiliary light source are both located on a side of the light source support device facing the common reflector, so that the main illumination light emitted from the main light source and the auxiliary illumination light or auxiliary signal indication light emitted from the auxiliary light source are directly directed toward the common reflector.

[0017] In one embodiment, a plurality of auxiliary light sources are provided, and the plurality of auxiliary light sources are arranged around at least one main light source.

[0018] In one embodiment, the lighting device further includes a diffusion component, which is arranged facing the light emitting surface of the auxiliary light source, and the diffusion component is arranged to receive the auxiliary lighting light or auxiliary signal indication light emitted from the auxiliary light source and guide it toward the common reflector, and a light distribution portion is provided on the light emitting surface of the diffusion component, and the light distribution portion is arranged to diffuse the auxiliary lighting light or auxiliary signal indication light from the auxiliary light source.

[0019] In one embodiment, the main light source is a high beam light source or a low beam light source, and the auxiliary light source is an auxiliary daytime running light light source, an auxiliary position light light source or an auxiliary turn light light source.

[0020] In one embodiment, the main light source and the auxiliary light source both include light emitting diodes.

[0021] In one embodiment, the common reflector is a curved projection reflector.

[0022] In one embodiment, the auxiliary light source is configured to be turned on when the main light source is turned off.

[0023] An embodiment of the present invention further provides a motor vehicle, comprising the lighting device as described in any of the above embodiments.

[0024] As described in at least one of the above embodiments of the present invention, the main light source and the auxiliary light source share a common reflector, so that the emission range of the auxiliary lighting light or auxiliary signal indication light emitted from the auxiliary light source can be increased to improve the lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A cross-sectional view schematically shows a lighting device according to an embodiment of the present invention;

[0026] Figure 2 A front view schematically shows a lighting device according to an embodiment of the present invention;

[0027] Figure 3 Schematically illustrates an exemplary collimator in an illumination device according to an embodiment of the present invention;

[0028] Figure 4 Another exemplary collimator in an illumination device according to an embodiment of the present invention is schematically shown;

[0029] Figure 5 Schematically illustrates an exemplary light source supporting device in a lighting device according to an embodiment of the present invention;

[0030] Figure 6 A cross-sectional view schematically showing a lighting device according to another embodiment of the present invention; and

[0031] Figure 7 Schematically showing Figure 6 An exemplary diffusion component in the lighting device is shown. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further specifically described below by examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals represent the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.

[0033] According to the general concept of the present invention, there is provided a lighting device, comprising: at least one main light source, the main light source being used to emit main lighting light; at least one auxiliary light source, the auxiliary light source being used to emit auxiliary lighting light or auxiliary signal indication light; and a common reflector, the common reflector being shared by the main light source and the auxiliary light source and configured to project the main lighting light emitted from the main light source and the auxiliary lighting light or auxiliary signal indication light emitted from the auxiliary light source to the outside of the lighting device.

[0034] In addition, in the following detailed description, for the purpose of explanation, numerous specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details.

[0035] Figure 1 A lighting device 100 according to an embodiment of the present invention is schematically shown. The lighting device 100 comprises: a main light source 10, an auxiliary light source 20 and a common reflector 30. The main light source 10 is used to emit main lighting light, and the auxiliary light source 20 is used to emit auxiliary lighting light or auxiliary signal indicator light. The common reflector 30 is shared by the main light source 10 and the auxiliary light source 20, and is configured to project the main lighting light emitted from the main light source 10 and the auxiliary lighting light or auxiliary signal indicator light emitted from the auxiliary light source 20 to the outside of the lighting device. Figure 1-4 The solid arrow in FIG. 1 shows the optical path of the light emitted by the auxiliary light source 20 .

[0036] In the embodiment of the present invention, the main light source 10 and the auxiliary light source 20 share the same common reflector 30, which means that both the light emitted by the main light source 10 and the light emitted by the auxiliary light source 20 can be projected by the common reflector 30. In this way, even if the main light source 10 is turned off and only the auxiliary light source 20 is turned on, when observing from the front of the lighting device 100, it can still be seen that the portion of the lighting device 100 corresponding to the main light source 10 is also bright. Since the main light source 10 and the auxiliary light source 20 share the common reflector 30, compared with the case where the main light source 10 and the auxiliary light source 20 use completely independent optical systems, the common reflector 30 can occupy a larger area without increasing space, and when only one of the main light source 10 and the auxiliary light source 20 is turned on, the area of ​​light emitted from the lighting device 100 will also increase. In practice, some main lighting lamps (such as high beams, low beams, etc.) and auxiliary lighting lamps or signal lamps (such as daytime running lights, position lights, turn signals, etc.) are often used separately. By utilizing the lighting device according to the embodiment of the present invention, when realizing the auxiliary lighting function or the signal indication function (turning on the auxiliary light source) rather than the main lighting function (turning off the main light source), a larger light output area can be obtained, thereby improving the visual effect and enabling other road users (such as vehicle drivers, pedestrians, etc.) to notice the vehicle more easily, thereby further improving driving safety.

[0037] In one example, the lighting device 100 further includes a light source supporting device 11 for supporting the main light source 10. As an example, Figure 1 As shown, the auxiliary light source 20 may be located outside the outer periphery of the common reflector 30, preferably located on the lower side of the outer periphery, opposite to the main light source 10 and pointing to the reflecting surface of the common reflector 30, and the light source support device 11 is provided with a reflecting surface 12 on the side facing the common reflector 30. The reflecting surface 12 may be arranged to receive the auxiliary illumination light or the auxiliary signal indication light from the auxiliary light source 20 and reflect it toward the common reflector 30. In this example, the auxiliary illumination light or the auxiliary signal indication light emitted from the auxiliary light source 20 is not directly directed toward the common reflector 30, but is reflected onto the common reflector 30 by the reflecting surface 12 of the light source support device 11.

[0038] The advantages of this design are that, firstly, the auxiliary light source 20 can be arranged at a place far away from the main light source 10, which provides a large degree of freedom for the position design of the auxiliary light source 20. For example, the auxiliary light source 20 can be located at a lower position than the common reflector 30, which can prevent the auxiliary light source 20 from blocking the outgoing light reflected by the common reflector 30. In addition, the reflecting surface 12 of the light source supporting device 11 is adjacent to the main light source 10, so that the optical path of the auxiliary illumination light or the auxiliary signal indication light after being reflected by the reflecting surface 12 (for example, Figure 1 The light path of the auxiliary light source 20 (as shown by the solid arrow in the figure) will be similar to the light path of the light emitted from the main light source 10. Since the scheme of the main light source 10 and the auxiliary light source 20 sharing the common reflector 30 is adopted, the closer the light path of the light emitted from the auxiliary light source 20 is to the light path of the light emitted from the main light source 10, the more convenient the design of the common reflector 30 will be, and the better the effect of the emitted light will be. For example, if the common reflector 30 adopts a parabolic reflector and the main light source 10 is used to realize the high beam function or the low beam function, the position of the main light source 10 can be set at the focus of the parabola, so that the light projected through the common reflector 30 is approximately parallel light, and the light emitted from the auxiliary light source 20 reflected by the reflecting surface 12 can also be regarded as similar to the light emitted from the position of the main light source 10 to the common reflector 30 because the reflection point is close to the position of the main light source 10, so that the common reflector 30 can also obtain a better effect for the projection of the light emitted from the auxiliary light source 20.

[0039] In one example, in order to make the light emitted from the auxiliary light source 20 be able to be irradiated more concentratedly to the position of the reflective surface 12 of the light source support device 11 that is closer to the main light source 10, the lighting device may further include a collimator 21, the collimator 21 is located between the auxiliary light source 20 and the reflective surface 12 in the light path of the auxiliary lighting light or the auxiliary signal indicator light, and is arranged to collimate the auxiliary lighting light or the auxiliary signal indicator light before the auxiliary lighting light or the auxiliary signal indicator light is emitted to the reflective surface 12. The collimated light can have better directionality, so that it can be concentratedly irradiated to a position closer to the main light source 10.

[0040] In one example, at least a majority of the collimator 21 is located outside the outer periphery of the common reflector 30. Figure 1 In the example shown, most of the collimator 21 is located below the periphery of the common reflector 30 and points to the reflective surface of the common reflector 30. In another example, the collimator 21 may also be completely disposed outside (e.g., below) the periphery of the common reflector 30. This can prevent the collimator 21 from affecting the outgoing light reflected by the common reflector 30.

[0041] As an example, the collimator 21 may include a collimating lens or a collimating reflector. The collimator 21 may convert the light beam emitted from the auxiliary light source 20 into a parallel light beam or a nearly parallel light beam, so that the collimated light beam can be emitted toward the reflective surface 12 along a specified direction. Figure 4 An example of a collimating lens is shown. In this example, the collimating lens may include a transmissive collimating portion 22 located inside the collimating lens and a total reflection collimating portion 23 located outside the collimating lens. Figure 1 As shown, the transmission collimating portion 22 can have the surface shape of a convex lens, for example, and can be used to collimate the central part of the incident light beam. The total reflection collimating portion 23 can collimate the peripheral part of the incident light beam through the total reflection surface 24. This structure can improve the optical coupling efficiency of the incident light beam. However, the collimator 21 in the embodiment of the present invention is not limited to this form, and it can also adopt other forms of collimating lenses known in the art.

[0042] Figure 3 An example of using a collimating reflector as the collimator 21' is shown. The collimator 21' can achieve a collimating effect by reflecting the light beam emitted from the auxiliary light source 20. For example, the collimator 21' can be implemented by a reflector in a curved surface form such as a parabolic reflector.

[0043] In one example, if Figure 2As shown, a plurality of auxiliary light sources 20 and a plurality of collimators 21 corresponding to the plurality of auxiliary light sources may be provided, and the plurality of collimators 21 may be arranged to face the reflective surface 12 of the light source support device 11. The reflective surface 12 may be arranged, for example, in a region adjacent to the main light source 10. With the use of a plurality of collimators 21, the light reflected by the reflective surface 21 may have a larger angle range, thereby increasing the light emitting area of ​​the lighting device 100, improving the lighting effect, and allowing other road users (such as vehicle drivers, pedestrians, etc.) to notice the vehicle, thereby further improving driving safety.

[0044] In one example, the reflective surface 12 may be provided with a light distribution portion 13, such as Figure 5 The light distribution unit 13 is arranged to distribute the auxiliary illumination light or auxiliary signal indicator light (such as Figure 1 As an example, the surface shape of each of the light distribution parts 13 can be configured to converge (e.g., an upper convex surface) or diverge (e.g., a lower concave surface) the portion of the light beam passing through the light distribution part 13 along a predetermined direction. It should be noted that even if the surface shape of the light distribution part 13 is configured to converge the light beam, due to the optical properties, the converged light beam may become a divergent light beam after passing the convergence point. The converging or diverging effect of the light distribution part 13 on the light beam portion can be achieved by refraction of the light beam portion by the surface of the light distribution part 13. The light distribution part 13 can make the light reflected by the reflective surface 12 more uniform and have a larger dispersion area, thereby improving the lighting effect of the lighting device 100.

[0045] Figure 6 FIG. 1 shows an illumination device 100' according to another embodiment of the present invention. The illumination device 100' comprises a light source supporting device 11', wherein the light source supporting device 11' is arranged to support the main light source 10 and the auxiliary light source 20. Figure 1 Unlike the above-mentioned embodiments, in this lighting device 100', the auxiliary light source 20 is disposed on the light source support device 11' together with the main light source 10, instead of the light emitted by the auxiliary light source 20 being reflected by the reflective surface on the light source support device before being emitted to the common reflector 30. The auxiliary lighting light or auxiliary signal indicator light emitted from the auxiliary light source 20 can also be emitted to the common reflector 30 like the main lighting light. Therefore, even if only the auxiliary light source 20 is turned on, when observing from the outside of the lighting device 100' in the direction facing the common reflector 30, it can be seen that the common reflector 30 is completely illuminated. Figure 6 In the figure, the light emitted by the main light source 10 is schematically represented by a dotted arrow, and the light emitted by the auxiliary light source 20 is schematically represented by a solid arrow.

[0046] In one example, in order to make the auxiliary lighting light or auxiliary signal indicator light emitted from the auxiliary light source 20 to be more uniformly irradiated on the common reflector 30, the lighting device 100' may further include a diffusion component 14. The diffusion component 14 is arranged facing the light emitting surface 25 of the auxiliary light source 20. The diffusion component 14 is arranged to receive the auxiliary lighting light or auxiliary signal indicator light (such as the auxiliary light source 20) emitted from the auxiliary light source 20. Figure 6 The light emitting surface of the diffusion component 14 is provided with a light distribution portion 15, as shown by the solid arrow in the middle) and guides it toward the common reflector 30. Figure 7 As shown. The light distribution part 15 is arranged to diffuse the auxiliary lighting light or auxiliary signal indication light from the auxiliary light source 20. As an example, the surface shape of each of the light distribution parts 15 can be configured to converge (e.g., an upper convex surface) or diverge (e.g., a lower concave surface) the light beam portion passing through the light distribution part 15 along a predetermined direction. It should be noted that even if the surface shape of the light distribution part 15 is configured to converge the light beam, due to the optical properties, the converged light beam may become a divergent light beam after passing the convergence point. The converging or diverging effect of the light distribution part 15 on the light beam portion can be achieved by refraction of the light beam portion by the surface of the light distribution part 15. As an example, the light distribution parts 13 and 15 can have a height or depth of 0.01 mm to 0.5 mm and a wavy shape.

[0047] In one example, the main light source 10 and the auxiliary light source 20 are both located on the side of the light source support device 11' facing the common reflector 30, so that the main illumination light emitted from the main light source 10 and the auxiliary illumination light or auxiliary signal indication light emitted from the auxiliary light source 20 are directly emitted to the common reflector 30. This prevents the auxiliary illumination light or the auxiliary signal indication light from being reflected before reaching the common reflector 30, thereby shortening the optical path and making the structure of the lighting device 100' more compact.

[0048] In the embodiment of the present invention, a single auxiliary light source 20 may be provided, or a plurality of auxiliary light sources 20 may be provided (in Figure 6 Two auxiliary light sources 20 are shown in the figure), for example, the multiple auxiliary light sources 20 can be arranged around at least one main light source 10.

[0049] In an embodiment of the present invention, the main light source 10 may be, for example, a high beam light source or a low beam light source, for realizing a high beam function or a low beam function. As an example, the auxiliary light source 20 may be an auxiliary daytime running light light source, an auxiliary position light light source or an auxiliary turn signal light source, for forming respective auxiliary functions. Here, the auxiliary light source 20, for example, used as an auxiliary daytime running light light source, an auxiliary position light light source or an auxiliary turn signal light source, may work together with the daytime running light light source, position light light source or turn signal light source of the vehicle itself after being triggered, thereby further improving driving safety. The auxiliary light source is triggered simultaneously when the daytime running light light source, position light light source or turn signal light source of the vehicle is triggered. Additionally, through the auxiliary light source, a redundant function can be realized in the event that the daytime running light light source, the position light light source or the turn signal light source fails.

[0050] As an example, the main light source 10 and the auxiliary light source 20 may both include light emitting diodes (LEDs). LEDs have the advantages of small size, low power consumption, and high luminous intensity. Using LED light sources can make the structure of the lighting devices 100 and 100' more compact.

[0051] As an example, the common reflector 30 may be a curved projection reflector. For example, it may have a parabola, a hyperbola, an ellipse or a more complex known curved surface shape. As an example, the common reflector 30 may be formed by a smooth curved surface, or may be formed by splicing a plurality of strip-shaped reflective elements.

[0052] In an embodiment of the present invention, the main light source 10 and the auxiliary light source 20 can be used to achieve different functions. Therefore, they can be turned on and off respectively as needed. For example, the auxiliary light source 20 can be configured to be lit when the main light source 10 is turned off, thereby serving as an auxiliary daytime running light light source. Assuming that the luminous range of the auxiliary light source 20 is large enough, it can be seen in this case that the entire common reflector 30 is brightened.

[0053] In the embodiment of the present invention, there may be any number of main light sources 10 and auxiliary light sources 20. For example, the number of main light sources 10 may be one, two, three or more, and the number of auxiliary light sources 20 may also be one, two, three, four or more. As an example, the number of auxiliary light sources 20 may be greater than the number of main light sources 10.

[0054] An embodiment of the present invention further provides a motor vehicle, comprising the lighting device 100 or 100 ′ as described in any one of the above embodiments.

[0055] As an example, components such as the collimators 21 , 21 ′ and the diffusion component 14 in the lighting device 100 , 100 ′ may be made of transparent glass, resin or plastic material, such as PMMA (polymethyl methacrylate) or polycarbonate.

[0056] As an example, components such as the collimators 21 , 21 ′ and the diffusion component 14 in the lighting device 100 , 100 ′ may be supported or suspended by any known suitable device for holding optical elements, such as a support, a suspension arm, and the like.

[0057] Although the present invention is described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify the preferred embodiments of the present invention and should not be construed as limiting the present invention. The size ratios in the drawings are merely illustrative and should not be construed as limiting the present invention.

[0058] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. A lighting device, comprising: at least one main light source, the main light source being used to emit main illumination light; at least one auxiliary light source, the auxiliary light source being used to emit auxiliary lighting light or auxiliary signal indication light; a common reflector, the common reflector being shared by the main light source and the auxiliary light source and configured to project the main illumination light emitted from the main light source and the auxiliary illumination light or auxiliary signal indicator light emitted from the auxiliary light source to the outside of the illumination device; as well as a light source supporting device, the light source supporting device is used to support the main light source, the auxiliary light source is located outside the outer periphery of the common reflector, the light source supporting device is provided with a reflecting surface on a side facing the common reflector, the reflecting surface is arranged to receive the auxiliary illumination light or the auxiliary signal indication light from the auxiliary light source and reflect it toward the common reflector; Wherein, when the main light source is turned off, the auxiliary light source is configured to light up.

2. The lighting device according to claim 1 further includes a collimator, which is located between the auxiliary light source and the reflecting surface in the optical path of the auxiliary lighting light or the auxiliary signal indicator light, and is arranged to collimate the auxiliary lighting light or the auxiliary signal indicator light before the auxiliary lighting light or the auxiliary signal indicator light is emitted toward the reflecting surface.

3. The lighting device according to claim 2, wherein: At least a majority of the collimator is located outside the periphery of the common reflector.

4. The lighting device according to claim 2, wherein: The collimator includes a collimating lens or a collimating reflector.

5. The lighting device according to claim 2, wherein: A plurality of auxiliary light sources and a plurality of collimators respectively corresponding to the plurality of auxiliary light sources are provided, and the plurality of collimators are arranged to face the reflecting surface of the light source supporting device.

6. The lighting device according to claim 1, wherein: The reflective surface is provided with a light distribution portion, and the light distribution portion is arranged to diffuse the auxiliary illumination light or the auxiliary signal indication light from the auxiliary light source.

7. The lighting device according to any one of claims 1 to 6, wherein: The main light source is a high beam light source or a low beam light source, and the auxiliary light source is an auxiliary daytime running light light source, an auxiliary position light light source or an auxiliary turn light light source. 8 . The lighting device according to claim 7 , wherein the main light source and the auxiliary light source both comprise light emitting diodes.

9. The lighting device according to claim 1, wherein: The common reflector is a curved projection reflector.

10. The lighting device according to claim 1, wherein: The auxiliary light source is configured to be turned off when the main light source is turned on.

11. A motor vehicle comprising a lighting device according to any one of claims 1 to 10.

Images