A vehicle lamp module, vehicle lamp and vehicle

Abstract

The utility model discloses a kind of vehicle lamp module, vehicle lamp and vehicle, vehicle lamp module includes light source and is sequentially arranged along optical path primary optical element, light shield and lens, also includes light uniformity plate, light uniformity plate is set between primary optical element and lens, and the minimum distance d between the front surface of light uniformity plate and the front of light shield meets d=5mm, the included angle a between the rear surface of light uniformity plate and light shield meets a=90 °±45 °.By adding light uniformity plate between primary optical element and light shield, and limit the minimum distance d of light uniformity plate and light shield d=5mm, effectively eliminate light form in bright and dark stripe, improve light form uniformity.Through the angle between light uniformity plate and light shield is changed, on the premise that light source power and lens structure are not changed, the adaptive optimization of illumination range is realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of automotive lighting, and particularly relates to a vehicle lamp module, a vehicle lamp, and a vehicle. Background Technology

[0002] The low beam module and high beam module of a car are used to realize low beam lighting and high beam lighting respectively. They are installed in the headlights on both sides of the front of the car. Their main function is to illuminate the road at night or in low visibility conditions, so that the driver can clearly see the road conditions and obstacles ahead.

[0003] Whether it's a low beam module or a high beam module, the uniformity of the light pattern is extremely important, as it directly affects the safety and comfort of nighttime driving and the driver's ability to perceive road conditions. A highly uniform light pattern can reduce driver fatigue and improve obstacle recognition, thereby ensuring driving safety. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle light module, a vehicle light, and a vehicle to improve the uniformity of vehicle light patterns.

[0005] To solve the above problems, the technical solution of this utility model is as follows: A vehicle lighting module includes a light source and a primary optical element, a light shield, and a lens arranged sequentially along the optical path. It also includes a light-diffusing plate, which is disposed between the primary optical element and the lens. The minimum distance d between the front surface of the light-diffusing plate and the leading edge of the light shield satisfies d≥5mm, and the angle a between the rear surface of the light-diffusing plate and the light shield satisfies a=90°±45°.

[0006] According to one embodiment of the present invention, at least one of the front surface or the rear surface of the light-diffusing plate is provided with a pattern.

[0007] According to one embodiment of the present invention, the primary optical element is a concentrator.

[0008] According to one embodiment of the present invention, the concentrator includes a low beam concentrator and a high beam concentrator arranged vertically, and the light-diffusing plate is disposed in front of the low beam concentrator and / or the high beam concentrator.

[0009] According to one embodiment of the present invention, the light-shielding plate is located below and / or above the light-diffusing plate, and a cutoff line structure is formed at the leading edge of the light-shielding plate.

[0010] According to one embodiment of the present invention, the thickness of the light-diffusing plate is 3mm to 15mm.

[0011] According to one embodiment of the present invention, the vehicle light module further includes a circuit board and a heat sink, with the light source disposed on one side of the circuit board and the heat sink connected to the other side of the circuit board.

[0012] According to one embodiment of the present invention, the light-diffusing plate and the primary optical element are formed as a single unit.

[0013] A vehicle light, including the vehicle light module in one embodiment of the present invention.

[0014] A vehicle including the headlights in one embodiment of the present invention.

[0015] Because of the adoption of the above technical solution, this utility model has the following advantages and positive effects compared with the prior art: In one embodiment of this utility model, the vehicle headlight module effectively eliminates bright and dark stripe defects in the light pattern and improves the uniformity of the light pattern by adding a light-diffusing plate between the primary optical element and the light-shielding plate, and limiting the minimum distance d between the leading edges of the light-diffusing plate and the light-shielding plate to d≥5mm. The included angle α between the rear surface of the light-diffusing plate and the light-shielding plate is limited to α=90°±45°. That is, by changing the angle between the light-diffusing plate and the light-shielding plate, adaptive optimization of the illumination range can be achieved without changing the light source power and lens structure. When the light-diffusing plate tilts forward, it illuminates the distant part of the road surface; when it tilts backward, it illuminates the near part of the road surface. This vehicle headlight module can take various forms, such as a low beam module or an integrated high / low beam module. Attached Figure Description

[0016] Figure 1 This is an exploded view of a vehicle headlight module according to one embodiment of the present invention; Figure 2 This is a schematic diagram of the near-beam pattern when the light-diffusing plate is set too close to the cutoff line structure in one embodiment of the present invention; Figure 3 This is a schematic diagram of the vehicle headlight module structure in one embodiment of the present utility model; Figure 4 This is a top view of a vehicle headlight module according to an embodiment of the present invention; Figure 5 In one embodiment of this utility model Figure 4 Sectional view of AA; Figure 6 This is a schematic diagram of the near beam pattern when the distance to the cutoff line structure of the light-diffusing plate is appropriate in one embodiment of this utility model; Figure 7 This is a schematic diagram of the low beam pattern in the existing automotive headlight module when no light-diffusing plate is installed.

[0017] Explanation of reference numerals in the attached figures: 1: Lens; 2: Lens support; 3: Light shield; 4: Light diffuser; 5: Condenser; 6: Circuit board; 7: Heat sink; 8: Cut-off line structure. Detailed Implementation

[0018] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further explanation of the vehicle lighting module, vehicle lighting, and vehicle proposed in this utility model.

[0019] Existing automotive lighting modules are generally divided into reflective modules and projective modules. Regardless of the type, there may be issues with light uniformity. To address this issue, this embodiment provides an automotive lighting module in which a light-diffusing plate is placed between the primary optical element and the lens along the light emission direction to adjust the uniformity of the light shape.

[0020] The vehicle headlight module includes a light source and a primary optical element, a light shield, and a lens arranged sequentially along the light path; it also includes a light-diffusing plate, which is disposed between the primary optical element and the lens, and the minimum distance d between the front surface of the light-diffusing plate and the leading edge of the light shield satisfies d≥5mm, and the included angle a between the rear surface of the light-diffusing plate and the light shield satisfies a=90°±45°.

[0021] This headlight module effectively avoids poor uniformity caused by placing a light-diffusing plate between the primary optical element and the lens, and limiting the minimum distance d between the front surface of the light-diffusing plate and the leading edge of the light-shielding plate to meet the requirement of d≥5mm. This avoids the appearance of bright and dark stripes in the light pattern caused by the light-diffusing plate being too close to the cutoff line structure set at the leading edge of the light-shielding plate. Figure 2 The diagram shows a near-beam pattern caused by the light homogenizer being too close to the cutoff line structure. The minimum distance d between the front surface of the light homogenizer and the leading edge of the light-shielding plate satisfies d≥5mm, resulting in a smooth and uniform transition of the light contour lines (e.g., ...). Figure 6 As shown in the figure, the light pattern is uniform, significantly improving nighttime driving visual comfort and obstacle recognition capabilities.

[0022] Furthermore, by limiting the angle between the rear surface of the light-diffusing plate and the light-shielding plate to 90°±45°, the headlight module is endowed with the ability to adjust the light pattern according to needs: when the angle is >90° (i.e., the light-diffusing plate is tilted forward), the light pattern distribution can be compressed longitudinally, causing the light energy to converge towards the H-axis, illuminating a farther distance on the road (e.g., 50m in front of the vehicle), enhancing long-distance visibility; when the angle is <90° (i.e., the light-diffusing plate is tilted backward), the light pattern distribution can be expanded longitudinally, resulting in a wider light pattern that illuminates the near distance on the road (e.g., 10m~20m in front of the vehicle), improving near-field road detail recognition. By changing the angle between the light-diffusing plate and the light-shielding plate, adaptive optimization of the illumination range can be achieved without changing the light source power and lens structure.

[0023] Furthermore, at least one of the front or rear surfaces of the light-diffusing plate is provided with a pattern, which can be at least one of the following forms: stripe, fisheye, grid, corn kernel, etc. Depending on actual needs, this allows for the diffusion of light horizontally and / or vertically.

[0024] Furthermore, the light-diffusing plate and the primary optical element are integrated into one piece to simplify the installation of components.

[0025] Specifically, the primary optical element in this embodiment can be a condenser, a reflector, or a small lens. The headlight module can be a low beam module or a high beam / low beam integrated module. The following description uses a condenser as the primary optical element and a high beam / low beam integrated module as an example.

[0026] Please refer to Figures 1 to 5 The headlight module includes a light source and a condenser 5 (primary optical element), a light shield 3, and a lens 1 arranged sequentially along the light path. The condenser 5 receives light emitted from the light source on its light-incident side and can have a cup-shaped structure. The condenser 5 includes a low-beam condenser and a high-beam condenser arranged vertically, used for low-beam and high-beam illumination, respectively. The headlight module also includes a light-diffusing plate 4, which is located in front of the light-emitting surface of the condenser 5. Both can be independent components or integrated into one unit. The light-diffusing plate 4 is positioned in the light path between the condenser 5 and the lens 1 and is an essential optical element for light transmission. The minimum distance between the front surface of the light-diffusing plate 4 and the leading edge of the light shield 3 is greater than or equal to 5 mm. The light-diffusing plate 4 can be vertically or tilted relative to the light shield 3. When tilted, the angle between the rear surface of the light-diffusing plate 4 and the light shield 3 is 90°±45°.

[0027] Furthermore, in the integrated high and low beam module, the light-diffusing plate 4 is positioned in front of the low beam concentrator and / or the high beam concentrator. That is, the light-diffusing plate 4 is positioned in front of the light-emitting surface of the low beam concentrator, and it can also be positioned in front of the light-emitting surface of the high beam concentrator. Similarly, the light-diffusing plate 4 on the high beam concentrator side cannot be positioned too close to the leading edge of the light-shielding plate 3, and the minimum distance between the front surface of the light-diffusing plate 4 and the leading edge of the light-shielding plate 3 must be greater than or equal to 5 mm. If the light-diffusing plate 4 is too close to the cutoff line structure 8 positioned at the leading edge of the light-shielding plate 3, it will cause bright and dark stripes in the light pattern, and the light-diffusing plate 4 will not be able to optimize the uniformity of the light pattern.

[0028] In one embodiment, at least one of the front or rear surfaces of the light-diffusing plate 4 is provided with a pattern, which can be at least one of the following forms: stripe, fisheye, grid, corn kernel, etc. Depending on actual needs, this allows for the diffusion of light horizontally and / or vertically.

[0029] In one embodiment, a light-diffusing plate is disposed on the front side of the light-emitting surface of the near beam concentrator. If the distance d between the front surface of the light-diffusing plate 4 and the leading edge of the light-shielding plate 3 is too small, it will result in bright and dark stripes on the near beam pattern. Figure 2 The light pattern shown; the angle α formed between the rear surface of the light-diffusing plate 4 and the light-shielding plate 3. When the light-diffusing plate 4 is tilted forward (i.e., α>90°), the low beam pattern can be compressed upward, so that the light illuminates a distance away on the road (50m in front of the vehicle). When the light-diffusing plate 4 is tilted backward (i.e., α<90°), the low beam pattern can be expanded downward, so that the light illuminates a nearby area (10m to 20m in front of the vehicle) on the road.

[0030] By placing the light-diffusing plate 4 within the aforementioned restricted position range and setting patterns on the front and / or rear surfaces of the light-diffusing plate, a more uniform light pattern can be obtained, such as... Figure 6 As shown. Existing headlight modules without a light-diffusing plate produce a low-beam beam pattern that is... Figure 7 As shown, it is clear that the near-light profile is more uniform after adding the homogenizing plate 4, and the contour lines transition more smoothly.

[0031] Furthermore, the thickness of the light-diffusing plate 4 is 3 mm to 15 mm.

[0032] In one embodiment, the light-shielding plate 3 is located below and / or above the light-diffusing plate 4. The light-shielding plate 3 has a plate-shaped structure with a cutoff line structure 8 formed at its leading edge. The light-shielding plate 3 is fixed to the lens bracket 2 through a connecting hole, and its rear end is connected to the condenser 5.

[0033] Lens 1 is located in front of light shield 3. After the light is adjusted by light homogenizing plate 4 and blocked by light shield 3, it is emitted and projected to form a light pattern.

[0034] In addition, the headlight module also includes a circuit board 6 and a heat sink 7. A light source is set on one side of the circuit board 6 and connected to the primary optical element, and the heat sink 7 is connected to the other side of the circuit board 6.

[0035] In the integrated high and low beam module, the low beam module and the high beam module are arranged vertically, and they share the same lens. The low beam module includes optical components such as a low beam condenser, a light-diffusing plate, a light-shielding plate, and a lens; the high beam module may only contain a high beam condenser and a lens, or a light-diffusing plate may be placed between the high beam condenser and the lens to uniformly shape the high beam.

[0036] Based on the aforementioned headlight module, this embodiment also provides a headlight, including the aforementioned headlight module. This headlight, by adding a light-diffusing plate 4, achieves a uniform light pattern, improves the uniformity of road lighting, and enhances driving safety.

[0037] The addition of a light-diffusing plate 4 can be applied to various architectures such as low beam modules and high beam / low beam integrated modules. Furthermore, the light-diffusing plate 4 can be integrated with the primary optical components without increasing the complexity of assembly.

[0038] The critical value limit of parameter d≥5mm for the light-diffusing plate 4 is based on experimental verification, providing technicians with a clear installation boundary and avoiding the failure of light-diffusing adjustment caused by the light-diffusing plate 4 being too close to the leading edge of the light-shielding plate 3; the angle range of parameter a=90°±45° for the light-diffusing plate 4 provides flexible design space for different lighting needs and realizes adaptive optimization of the lighting range.

[0039] Furthermore, this embodiment also provides a vehicle including the headlight, which has the same technical effect as the headlight.

[0040] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A vehicle lighting module, comprising a light source and a primary optical element, a light shield, and a lens arranged sequentially along an optical path, characterized in that, It also includes a light-diffusing plate, which is disposed between the primary optical element and the lens, and the minimum distance d between the front surface of the light-diffusing plate and the leading edge of the light-shielding plate satisfies d≥5mm, and the included angle a between the rear surface of the light-diffusing plate and the light-shielding plate satisfies a=90°±45°.

2. The vehicle headlight module according to claim 1, characterized in that, At least one of the front or rear surfaces of the light-diffusing plate is provided with a pattern.

3. The vehicle headlight module according to claim 1 or 2, characterized in that, The primary optical element is a concentrator.

4. The vehicle headlight module according to claim 3, characterized in that, The light concentrator includes a low-beam concentrator and a high-beam concentrator arranged vertically, and the light-diffusing plate is disposed in front of the low-beam concentrator and / or the high-beam concentrator.

5. The vehicle headlight module according to claim 4, characterized in that, The light-shielding plate is located below and / or above the light-diffusing plate, and a cutoff line structure is formed at the leading edge of the light-shielding plate.

6. The vehicle headlight module according to claim 4, characterized in that, The thickness of the light-diffusing plate is 3mm to 15mm.

7. The vehicle headlight module according to claim 1, characterized in that, It also includes a circuit board and a heat sink, with the light source disposed on one side of the circuit board and the heat sink connected to the other side of the circuit board.

8. The vehicle headlight module according to claim 1, characterized in that, The light-diffusing plate and the primary optical element are formed as a single unit.

9. A vehicle light, characterized in that, Includes the vehicle headlight module as described in any one of claims 1-8.

10. A vehicle, characterized in that, Including the vehicle lights as described in claim 9.

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