A vehicle lamp system capable of uniform illumination

Abstract

The present application relates to a kind of even lightable car light systems, in virtual three-dimensional coordinates, car light left and right is transverse, front and back is longitudinal, at the same height, 1 or 2 light sources are arranged along the transverse direction;When 1 light source is arranged, the light source is arranged at the lateral position of car light, and the irradiation direction is rearward along the longitudinal direction;Thick wall light guide component includes 1 even light unit;When 2 light sources are arranged, two light sources are arranged at the lateral position of car light, and the irradiation direction is rearward along the longitudinal direction;Thick wall light guide component includes 2 even light units separated along the axial surface;The even light unit includes: the light receiving surface directly opposite the irradiation of light source, the first total reflection surface inclined to the other side relative to the light receiving surface;Second total reflection surface is inclined forward along the longitudinal direction from the rear end of the first total reflection surface;Emission surface is arranged along the transverse direction at the front of the second total reflection surface.

Description

Technical Field

[0001] This invention relates to a vehicle lighting system, and more particularly to a vehicle lighting system capable of uniform illumination, belonging to the field of vehicle lighting technology. Background Technology

[0002] Since LED signal lights were applied to vehicle lights, their designs have become increasingly diverse, and the requirements for uniform light emission have become increasingly stringent. Ultra-wide luminous areas are one such trend. However, the design space for lighting fixtures is constantly shrinking, and the conditions for achieving uniform illumination are gradually deteriorating.

[0003] For shapes with large opening widths in the light-emitting area, the conventional design approach is a direct-firing, thick-walled concentrator. The optical drawbacks of this approach are:

[0004] First: For shallow lamp bodies, from the front view perspective, it is difficult to achieve uniform lighting on thick-walled components.

[0005] Second: When viewed from a wide angle from the side, you can see the bright spots of the lamps through the thick-walled side wall.

[0006] Specifically, such as Figure 1 As shown, the optical principle of a conventional optical system is as follows: LED direct light is collected by an optical surface and emitted from a light-emitting surface. Because the entire thick-walled component is a transparent plastic part, from the front view, you can see that the central focusing surface 3 and the two side total reflection surfaces 4 have different brightness, making it difficult to achieve completely uniform lighting. Furthermore, most current thick-walled component lamps use a cantilever design, and the LED direct light spot is visible through the side 2 of the thick-walled component at the outer viewing angle 5.

[0007] Third: such as Figure 1 As shown, the thickness of thick-walled components is relatively large, which requires a large depth of space for the headlights, making it unfavorable for the headlight styling design and the trend towards miniaturization. Summary of the Invention

[0008] The purpose of this invention is to provide a vehicle lighting system that can be uniformly illuminated. With an ultra-wide light-emitting area design, it achieves uniform lighting effect, avoids defects such as bright spots under large viewing angles, reduces the thickness of thick-walled components, and thus reduces the space requirements for the front and rear depth of the vehicle lighting installation.

[0009] The present invention adopts the following technical solution:

[0010] A vehicle lighting system capable of uniform illumination, within a virtual three-dimensional coordinate system, is defined as follows: the left and right sides of the vehicle light are horizontal, and the front and rear are vertical. At the same height, one or two light sources are arranged horizontally. When one light source is arranged, it is located on one side of the vehicle light's horizontal direction, with the illumination direction extending backward along the vertical direction. A thick-walled light guide component 7 includes one uniform illumination unit. When two light sources are arranged, the two light sources are respectively located on both sides of the vehicle light's horizontal direction, with the illumination direction extending backward along the vertical direction. The thick-walled light guide component 7 includes two uniform illumination units separated along its central axis. Each uniform illumination unit includes: a light-receiving surface 7.1 facing the light source, a first total reflection surface 7.2 inclined to the other side relative to the light-receiving surface 7.1; a second total reflection surface 7.3 inclined forward along the vertical direction from the rear end of the first total reflection surface 7.2; and a light-emitting surface 7.4 arranged horizontally in front of the second total reflection surface 7.3.

[0011] Preferably, the two uniformly lit units have the same shape.

[0012] Furthermore, the two uniform illumination units are arranged symmetrically along the central axis.

[0013] Preferably, the two uniformly lit units have different shapes.

[0014] Preferably, a light-transmitting component 8 is provided in front of the light-emitting surface 7.4.

[0015] Furthermore, the light-transmitting component 8 can be a thick-walled component or a thin-walled component.

[0016] Preferably, the uniform illumination unit has a plurality of units, which are stacked and arranged in a vertical direction, and the corresponding light sources are also stacked and arranged in a vertical direction.

[0017] Preferably, the vehicle lighting system is a vehicle signal light system.

[0018] Preferably, the first total reflection surface 7.2 is a curved surface, and the light-receiving surface 7.1 and the light-emitting surface 7.4 are located on the same plane.

[0019] Furthermore, the curved surface is an arc-shaped surface.

[0020] The beneficial effects of this invention are as follows:

[0021] 1) With the design of an ultra-wide light-emitting area, uniform lighting effect in the lateral direction is achieved through double reflection;

[0022] 2) It can reduce the number of LEDs used, saving space;

[0023] 3) Avoid bright spot defects at large viewing angles;

[0024] 4) Reduce the thickness of thick-walled components to reduce the space requirements for the front and rear depth of the headlight installation. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of a conventional thick-walled optical system in the prior art.

[0026] Figure 2 This is a front view of the thick-walled optical guide component in this invention.

[0027] Figure 3 This is a side view of the thick-walled optical guide component in this invention.

[0028] Figure 4 This is a top view of the thick-walled optical guide component in this invention.

[0029] Figure 5 This is a top-view cross-sectional view of the optical system of the vehicle lighting system that can be uniformly illuminated according to the present invention, as shown in Embodiment 1.

[0030] Figure 6 This is a top-view cross-sectional view of the optical system of the vehicle lighting system that can be uniformly illuminated according to the present invention, as shown in Embodiment 2.

[0031] Figure 7 This is a schematic diagram of the optical path.

[0032] In the figure, 1. First total reflection surface, 2. Side view, 3. Middle light-concentrating surface, 4. Both sides total reflection surfaces, 5. Outer viewing angle, 6. LED circuit board, 7. Thick-walled light guide component, 7.1. Light-receiving surface, 7.2. First total reflection surface, 7.3. Second total reflection surface, 7.4. Light-emitting surface. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1:

[0035] See Figures 2-5 A vehicle lighting system capable of uniform illumination is described. In a virtual three-dimensional coordinate system, the left and right sides of the vehicle light are considered horizontal, and the front and rear are considered vertical. At the same height, one or two light sources are arranged horizontally. When one light source is arranged, it is located on one side of the vehicle light's horizontal axis, with the illumination direction extending backward along the vertical axis. A thick-walled light guide component 7 includes one uniform illumination unit. When two light sources are arranged, they are located on opposite sides of the vehicle light's horizontal axis, with the illumination direction extending backward along the vertical axis. The thick-walled light guide component 7 includes two uniform illumination units separated along its central axis. Each uniform illumination unit includes: a light-receiving surface 7.1 facing the light source; a first total reflection surface 7.2 inclined to the other side relative to the light-receiving surface 7.1; a second total reflection surface 7.3 inclined forward along the vertical axis from the rear end of the first total reflection surface 7.2; and a light-emitting surface 7.4 arranged horizontally in front of the second total reflection surface 7.3.

[0036] As an optional solution in this embodiment, the two uniform lighting units have the same shape and are arranged symmetrically along the central axis.

[0037] As another optional solution in this embodiment, the two uniformly lit units have different shapes, but are still divided into two parts by the central axis.

[0038] In this embodiment, see Figure 5 A light-transmitting component 8 is provided in front of the light-emitting surface 7.4. The light-transmitting component 8 is a thick-walled component. This thick-walled component has light-emitting surface features, and optical patterns can be designed on its front and back surfaces.

[0039] As an expandable embodiment, the uniform illumination unit has a plurality of units, which are stacked and arranged in a vertical direction, and the corresponding light sources are also stacked and arranged in a vertical direction, which is not shown in the accompanying drawings.

[0040] In this embodiment, the vehicle lighting system is a vehicle signal light system.

[0041] Example 2:

[0042] The difference from Example 1 is as follows: See Figure 6 A light-transmitting component 8 is provided in front of the light-emitting surface 7.4. The light-transmitting component 8 is a thin-walled component. This thin-walled component has light-emitting surface features, and optical patterns can be designed on its front and back surfaces.

[0043] Example 3:

[0044] The difference from Example 1 is that, see [link to example]. Figure 7 The first total internal reflection surface 7.2 is a curved surface, and the light-receiving surface 7.1 and the light-emitting surface 7.4 are located on the same plane. First, the diffused light emitted by the LED into the interior of the headlight is converted into parallel light, and then the propagation direction of this parallel light is deflected relative to the direction of the light emitted by the light source.

[0045] As a variation of this embodiment, the curved surface can preferably be an arc-shaped surface. For example... Figure 7 As shown.

[0046] As can be seen from the above two embodiments, a uniform lighting effect can be achieved under the premise of a large opening in the light-emitting area. The total internal reflection thick-walled light guide component 7 of this system collects light through the light-collecting surface 7.1, while the first total internal reflection surface 7.2 and the second total internal reflection surface 7.3 change the light path. This optical mode can achieve light deflection and uniformity within the confined space of the lamp body. The LED light source illuminates the interior of the headlight, while avoiding defects such as bright spots at large viewing angles.

[0047] The design concept of this invention can be widely applied in current traffic light design processes, enriching the optical implementation forms of traffic lights. It enables ultra-wide light-emitting shapes and ultra-compact internal space for uniform illumination of vehicle lights. It opens up a new design approach for fully utilizing the lamp body space to achieve a uniform lighting effect.

[0048] The above two embodiments are preferred embodiments of the present invention. Those skilled in the art can make various changes or improvements based on them. Without departing from the general concept of the present invention, these changes or improvements are all within the scope of protection claimed by the present invention.

Claims

1. A vehicle lamp system capable of uniform illumination, in a virtual three-dimensional coordinate, the left and right of the vehicle lamp being transverse, and the front and back being longitudinal, characterized in that: two light sources are arranged transversely at the same height; the two light sources are arranged at the left and right sides of the vehicle lamp respectively, and the illumination direction is rearward along the longitudinal direction; a thick-walled light guide component (7) comprises two uniform illumination units separated along the central axis surface; the uniform illumination unit comprises a light receiving surface (7.1) directly opposite the light source, a first total reflection surface (7.2) inclined to the other side relative to the light receiving surface (7.1), a second total reflection surface (7.3) inclined forward along the longitudinal direction from the rear end of the first total reflection surface (7.2), and a light emitting surface (7.4) arranged transversely in front of the second total reflection surface (7.3); the light sources of the two uniform illumination units are emitted through the unified light emitting surface (7.4); the light receiving surface (7.1) and the light emitting surface (7.4) are connected, the first total reflection surface (7.2) and the second total reflection surface (7.3) are connected, the light emitting surfaces (7.4) of the two uniform illumination units are connected, and the second total reflection surfaces (7.3) of the two uniform illumination units are connected. The two uniform illumination units are the same in shape. The two uniform illumination units are arranged symmetrically along the central axis surface. The two uniform illumination units are different in shape. A light-transmitting part (8) is arranged in front of the light emitting surface (7.4). The light-transmitting part (8) is a thick-walled part or a thin-walled part.

2. The uniformly illuminatable vehicle lamp system of claim 1, wherein: The uniform illumination unit has a plurality of uniform illumination units arranged in the vertical direction, and the corresponding light sources are also arranged in the vertical direction.

3. The uniformly illuminatable vehicle lamp system of claim 2, wherein: The vehicle lamp system is a vehicle signal lamp system.

4. The uniformly illuminatable vehicle lamp system of claim 1, wherein: The first total reflection surface (7.2) is a curved surface, and the light receiving surface (7.1) and the light emitting surface (7.4) are located in the same plane.

5. The uniformly illuminatable vehicle lamp system of claim 1, wherein: The curved surface is an arc surface.

6. The uniformly illuminatable vehicle lamp system of claim 5, wherein: ​ 7. The uniformly illuminatable vehicle lamp system of claim 1, wherein: ​ 8. The uniformly illuminatable vehicle lamp system of claim 1, wherein: ​ 9. The uniformly illuminatable vehicle lamp system of claim 1, wherein: ​ 10. The uniformly illuminatable vehicle lamp system of claim 9, wherein: ​

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