Vehicle lamp module, motor vehicle headlamp, and motor vehicle

Abstract

The present invention relates to a vehicle lamp module (100) comprising a light source (101), a reflector (102), a lens (103) and a heat sink (104), the reflector (102) being disposed opposite the light source (101) and having a reflective surface (1021) for reflecting light rays emitted by the light source (101) to form a light beam along an optical axis (106) of the vehicle lamp module (100), the lens (103) being adjacent to the reflector (102) for projecting light rays reflected by the reflector (102), the light source (101) being disposed on the heat sink (104), and the heat sink (104) dissipates heat from the light source (101). The vehicle lamp module (100) further comprises a light shield (105). The invention also relates to a motor vehicle headlamp comprising a vehicle lamp module (100), and to a corresponding motor vehicle.

Description

[Technical Field]

[0001] The present invention relates to a vehicle lamp module, a motor vehicle headlamp, and a motor vehicle. [Background technology]

[0002] In the field of automotive lighting, the focal point of the lens is close to the light source, so that light rays emitted directly by the light source are projected outward through the lens, which can result in colored, overly bright spots in the low beam range and colored spots in the high beam range. Summary of the Invention

[0003] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a vehicle lamp module and a motor vehicle that can at least partially solve the above-mentioned technical problems.

[0004] A vehicle lamp module according to the present invention comprises a light source, a reflector, a radiator, and a lens, wherein the light source is disposed on the radiator and the radiator dissipates heat from the light source, the reflector is disposed opposite the light source and has a reflective surface for reflecting light rays emitted by the light source to form a light beam along an optical axis of the vehicle lamp module, and the lens is configured to project the light rays reflected by the reflector, and the vehicle lamp module further comprises a light shield.

[0005] According to a non-limiting embodiment of the present invention, the light blocking body is disposed between the light source and the lens.

[0006] According to a non-limiting embodiment of the present invention, the light shield is disposed on the heat sink.

[0007] According to a non-limiting embodiment of the present invention, the light shield and the heat sink are of one piece.

[0008] According to a non-limiting embodiment of the present invention, the light shields are arranged in one-to-one correspondence with the light sources.

[0009] According to a non-limiting embodiment of the present invention, when the vehicle lamp module includes multiple light sources, the light shield is shared by two or more of the light sources.

[0010] According to a non-limiting embodiment of the present invention, the surface of the light shield that is closest to the light source is flat or stepped.

[0011] The present invention also provides a motor vehicle headlamp comprising a vehicle lamp module as described above.

[0012] The present invention also provides a motor vehicle comprising a vehicle lamp module or a motor vehicle headlamp as described above.

[0013] The invention will now be further explained with the aid of the accompanying drawings. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic diagram of a vehicle lamp module according to an embodiment of the present invention; [Figure 2] 1A and 1B are diagrams illustrating the structure of a light blocking body according to an embodiment of the present invention. [Figure 3] 10A and 10B are diagrams showing another structure of a light blocking body according to an embodiment of the present invention. [Figure 4a] 4A and 4B are comparative diagrams of the light effect of a vehicle lamp module according to an embodiment of the present invention and a vehicle lamp module without a light shield. [Figure 4b] 4A and 4B are comparative diagrams of the light effect of a vehicle lamp module according to an embodiment of the present invention and a vehicle lamp module without a light shield. [Figure 4c] 4A and 4B are comparative diagrams of the light effect of a vehicle lamp module according to an embodiment of the present invention and a vehicle lamp module without a light shield. [Figure 4d] 4A and 4B are comparative diagrams of the light effect of a vehicle lamp module according to an embodiment of the present invention and a vehicle lamp module without a light shield. DETAILED DESCRIPTION OF THE INVENTION

[0015] Various embodiments of the present invention are exemplified below. As should be fully understood by those skilled in the art, the described embodiments can be modified in various ways without departing from the concept of the present invention. Thus, the accompanying drawings and specification are illustrative and non-limiting in nature. In the following text, the same reference numerals generally indicate elements having the same or similar functions.

[0016] The present invention provides a vehicle lamp module, a motor vehicle headlamp including a vehicle lamp module, and a motor vehicle.

[0017] FIG. 1 schematically shows a schematic diagram of a vehicle lamp module 100 according to an embodiment of the present invention. The vehicle lamp module 100 includes a light source 101, a reflector 102, a lens 103, and a heat sink 104. The light source 101 emits light rays. The reflector 102 is disposed opposite the light source 101. The reflector 102 has a reflective surface 1021 for reflecting the light rays emitted by the light source 101 to form a light beam along an optical axis 106 of the vehicle lamp module 100. The lens 103 is configured to project the light rays reflected by the reflector 102. The light source 101 is disposed on the heat sink 104, which dissipates heat from the light source 101.

[0018] According to a preferred embodiment of the present invention, the light source 101 is advantageously a semiconductor light source, such as a light emitting diode (LED). According to another preferred embodiment of the present invention, the light source 101 is a printed circuit board (PCB) with a semiconductor light source.

[0019] Within the half-space bounded by the main surfaces of the light source 101, the light source 101 emits light rays in a main direction perpendicular to the main surfaces and to the optical axis 106.

[0020] The body of the reflector 102 is in the shape of a shell or cap. The inner surface of the body of the reflector 102 is the reflective surface 1021. Advantageously, the reflective surface 1021 has an elliptical or parabolic profile. The reflector 102 is preferably made of a highly heat-resistant material, such as glass or a polymer such as polycarbonate (PC).

[0021] The light source 101 is preferably positioned at the focal point of the reflective surface 1021 of the reflector 102 such that the light rays emitted by the light source 101 are received by the reflective surface 1021 of the reflector 102 and reflected to form a light beam along the optical axis 106.

[0022] The lens 103 is an optical element that allows light rays to pass through, and projects the light rays that have entered the lens 103 so as to form a desired beam pattern.

[0023] A heat sink 104 is coupled to the reflector 102 and the lens 103 and provides support for the light source 101 while dissipating heat from the light source 101 .

[0024] The vehicle lamp module 100 according to the present invention further includes a light shield 105. As shown in Fig. 1, the light shield 105 is disposed between the light source 101 and the lens 103. The light shield 105 blocks light rays emitted by the light source 101 that are parallel or nearly parallel to the optical axis 106, so as to prevent the light rays from being projected through the lens 103 in an undesired manner.

[0025] The light blocking body 105 is preferably opaque so as to absorb light rays emitted directly by the light source 101 toward the lens 103. The light blocking body 105 has a front surface 1051 and another surface opposite to the front surface 1051, with the front surface 1051 being the surface closer to the light source 101. In one embodiment, the front surface 1051 absorbs light rays emitted directly by the light source 101 toward the lens 103. In another embodiment, the front surface 1051 may reflect light rays emitted directly by the light source 101 toward the lens 103.

[0026] According to one embodiment of the present invention, the light shield 105 is disposed on the heat sink 104. By disposing the light shield 105 on the heat sink 104 in a direction in which the light source 101 emits light directly towards the lens 103, it is possible to avoid taking up limited space in the vehicle lamp module 100 and achieve a more compact structure.

[0027] More preferably, the light shield 105 and the heat sink 104 are integrally formed with one another to reduce assembly complexity by using fewer mounting elements.

[0028] To ensure the heat dissipation effect of the light source 101 and to facilitate wiring of the light source 101, a certain distance is provided between the light shield 105 and the light source 101. The distance between the light shield 105 and the light source 101 is about 4 to 4.5 mm.

[0029] The light shielding body 105 has a certain height and width to achieve a better blocking effect. The width of the light shielding body 105 (the dimension in the longitudinal (vertical) direction of the lens 103) depends on the length of the lens, and the height of the light shielding body 105 (i.e., the height protruding from the heat sink 103) depends on the width of the lens 103. The size of the light shielding body 105 can be determined according to specific applicable circumstances and is not specifically limited in the present invention.

[0030] According to one embodiment of the present invention, the light blocking bodies 105 are arranged in one-to-one correspondence with the light sources 101. Each light blocking body 105 absorbs or reflects the light beams directly emitted by the corresponding light source 101.

[0031] To ensure a good lighting effect, a vehicle lamp module 100 generally includes multiple light sources 101. According to a preferred embodiment of the present invention, as shown in Figures 2 and 3, when the vehicle lamp module 100 includes multiple light sources 101, a light shield 105 is shared by two or more of the light sources 101. That is, one light shield 105 can block (including absorb, reflect, etc.) the light beams emitted directly toward the lens by the multiple light sources 101. Reducing the number of light shields 105 can reduce the complexity of the manufacturing process.

[0032] According to the lighting effect requirements of the vehicle lamp module 100, the light sources 101 may be arranged in various ways. Considering the need to ensure a reasonable distance between the light shielding body 105 and each light source 101, the surface of the light shielding body 105 closest to the light source 101, i.e., the front surface 1051 of the light shielding body 105, may be implemented in various shapes according to actual requirements.

[0033] Figure 2 shows the structure of a light shield according to one embodiment of the present invention. As shown in Figure 2, if the light sources 101 have gradually increasing and decreasing distances from the lens 103, the front surface 1051 of the light shield 105 is stepped accordingly.

[0034] 3 shows another structure of a light blocking body according to an embodiment of the present invention. As shown in FIG. 3, when multiple light sources 101 are at approximately the same distance from lens 103, front surface 1051 of light blocking body 105 is accordingly flat.

[0035] The stepped or flat front surface 1051 of the light shield 105 is used only as an example to describe the shape of the light shield 105 and is not intended to be a specific limitation thereof. In other embodiments, the front surface 1051 of the light shield 105 may have a different shape. For example, if the light sources 101 are arranged in an arc shape, the front surface 1051 of the light shield 105 will be arc shaped.

[0036] According to some embodiments of the present invention, the light shield 105 and the heat sink 104 may be stamped or machined into a single, integral structure from conventional materials (e.g., aluminum or other suitable metallic materials), although the heat sink 104 may be made from other materials and processes without being specifically limited by the present invention.

[0037] 1 of the present invention only schematically illustrates the path of a high beam in the vehicle lamp module 100, but based on this, those skilled in the art can understand the path of a low beam in the vehicle lamp module 100. Therefore, although the low beam situation is not described in detail in the present invention, the corresponding content is still within the scope of the present invention.

[0038] Figures 4a to 4d are comparative diagrams of the light effects of a vehicle lamp module according to an embodiment of the present invention and a vehicle lamp module without a shade 105. Figures 4a and 4b are diagrams of the light effects in low beam and high beam, respectively, of a vehicle lamp module without a shade 105. Figures 4c and 4d are diagrams of the light effects in low beam and high beam, respectively, of a vehicle lamp module according to the present invention.

[0039] 4a to 4d, in the vehicle lamp module 100 according to the present invention, the light beams directly emitted from the light source 101 are blocked by the light blocking body 105 disposed on the heat sink 104, which not only reduces the virtual spot above the low beam cut-off line but also reduces colored light in the high beam range, thereby achieving excellent optical effects.

[0040] The present invention also provides a motor vehicle headlamp comprising the vehicle lamp module 100 described above.

[0041] The present invention also provides a motor vehicle comprising the vehicle lamp module 100 or motor vehicle headlamp described above.

[0042] A motor vehicle headlamp and motor vehicle according to the present invention has at least the beneficial effects achieved by the vehicle lamp module 100 described above.

[0043] It is clear to those skilled in the art that the present invention is not limited to the exemplary embodiments described above, and that the present invention can be embodied in other specific forms without departing from its spirit or essential characteristics. Thus, regardless of which perspective is taken, the embodiments should be considered illustrative and not limiting. The scope of the present invention is defined by the appended claims, not by the above description. Accordingly, all changes that come within the spirit and scope of the claims and their equivalents are intended to be embraced by the present invention. Any reference signs in the claims should not be construed as limiting the relevant claim. Furthermore, the word "comprising" does not exclude other units or steps, and the word "singular" does not exclude a plurality. Words such as "first" and "second" are used to indicate names and do not imply any particular order.

Claims

1. A vehicle lamp module (100) comprising a plurality of light sources (101), a reflector (102), a lens (103), and a heat sink (104), the reflector (102) is disposed facing the light sources (101) and has a reflective surface (1021) for reflecting light rays emitted by the plurality of light sources (101) to form a light beam along an optical axis (106) of the vehicle lamp module (100); the lens (103) is configured to project the light beam reflected by the reflector (102); A vehicle lamp module (100), wherein the plurality of light sources (101) are disposed on the heat sink (104), and the heat sink (104) dissipates heat from the light sources (101), The vehicle lamp module (100) further comprises a light shield (105) disposed on the heat sink (104); The light blocking body (105) has a front surface (1051) and another surface opposite to the front surface, the front surface (1051) being a surface closer to the plurality of light sources (101), The light blocking body (105) is shared by two or more of the plurality of light sources (101), A vehicle lamp module (100) in which the distance from each of the plurality of light sources (101) to the lens (103) gradually increases or decreases, and the front surface (1051) of the light blocking body (105) has a stepped shape corresponding to this gradually increasing or decreasing distance.

2. 2. The vehicle lamp module (100) according to claim 1, wherein the light shield (105) is disposed between the light source (101) and the lens (103).

3. 2. The vehicle lamp module (100) according to claim 1, wherein the light shield (105) and the heat sink (104) are of an integral structure.

4. A headlamp for a motor vehicle, characterized in that it comprises a vehicle lamp module (100) according to any one of claims 1 to 3.

5. A motor vehicle comprising the headlamp of claim 4.

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