WO2021012422A1

WO2021012422A1 - Sectional type light reflective plate for vehicle lamp, vehicle lamp system, and vehicle

Info

Publication number: WO2021012422A1
Application number: PCT/CN2019/111700
Authority: WO
Inventors: 张洁
Original assignee: 华域视觉科技(上海)有限公司
Priority date: 2019-07-24
Filing date: 2019-10-17
Publication date: 2021-01-28
Also published as: CN110230800A

Abstract

A sectional type light reflective plate for a vehicle lamp, comprising a light reflective plate (1). The light reflective plate (1) is provided with a plurality of light reflective plate sections (11); each light reflective plate section (11) is suitable for independently moving, so that a light reflective state of the light reflective plate (1) can be changed to form different light shapes. In addition, disclosed are a vehicle lamp system and a vehicle having same. The vehicle lamp system uses the sectional type light reflective plate for the vehicle lamp, so as to facilitate reflecting light rays emitted by a light source (4) to form different light shapes, especially self-adaptive light shapes. The system has the advantages of simple light source setting and convenient and flexible control.

Description

Segmented reflector for vehicle light, vehicle light system and vehicle

Technical field

The invention relates to a vehicle lamp, in particular to a segmented reflector for a vehicle lamp. The invention also relates to a vehicle light system and a vehicle.

Background technique

The shape of the existing car light is usually formed by a light blocking plate, that is, a light blocking plate processed into a specific shape is used to block one side of the car light source, and the light from the unblocked part of the light source is converged by the lens to illuminate On the road, a specific light shape is formed. Since the light barrier has been processed into a specific shape in advance, the light barrier structure can only form a specific light shape.

There is also a vehicle lamp structure in which the light emitted by the light source of the vehicle lamp is reflected to the road surface through a reflector plate to form a light shape. In this vehicle lamp structure, the shape of the light shape depends on the shape of the reflector plate. The existing reflector plates are all integral structures, and the shapes of the reflector plates are all pre-processed specific shapes. Therefore, the light shape formed by the reflection of the reflector plate is also fixed, and the light shape cannot be adjusted.

In recent years, with the emergence of adaptive high-beam lighting modes, more diversified requirements have been put forward for the light shape of car lights. Therefore, matrix LED headlight technology appeared. The matrix LED headlight divides the lighting space of the entire headlamp into multiple different blocks, each block is illuminated by an LED, and different lights are generated by lighting and extinguishing the LEDs of different blocks type. Among them, the LED of each specific block can provide a minimum illumination area of about 1°. Therefore, by controlling one or more LEDs of the matrix LED headlights in a targeted manner, the generated light distribution can be finely changed to form a variety of illumination light patterns. It can also be used to realize local high beam function or marking light function.

The existing matrix LED headlights adopt the LED matrix form of light source, which mostly adopts a plurality of matrix-type side-by-side and/or superimposed, single controllable LED light sources; accordingly, multiple LED light sources are arranged in front of the LED light source. A matrix of primary optical elements arranged side by side and/or superimposed on each other is used to gather the light emitted by the light source; a projection optical element is arranged in front of the primary optical element to project the light emitted from the exit surface of the primary optical element to On the traffic lane in front of the motor vehicle, a predetermined light distribution is generated.

The existing matrix LED headlights have the following defects:

1. Multiple LED chips are set up to realize the light shape change by combining the light source on and off. The more the number of light sources, the more the state of light shape changes. However, the excessive number of light sources leads to complicated electronic control and circuits, which fundamentally leads to waste of light sources and increased costs.

2. Since the LED chip inevitably occupies a certain light-emitting area, generally not less than 0.5mm ² , coupled with the spacing between the light-emitting chips, the light source distribution area is large, which brings difficulties to the design of the imaging system, so the existing technology is generally All through the primary light distribution unit, the light of the multi-light emitting chip is modulated once, and then through the secondary light distribution unit (or called projection optics), generally a collimating lens, the light is projected onto the road surface to form the desired light shape. However, the number of LED chips is large, and the structure of the primary and secondary light distribution units is very complicated, resulting in a larger volume and heavier weight of the matrix LED headlight.

Summary of the invention

The technical problem to be solved by the present invention is to provide a segmented reflector for vehicles, which can realize switching of multiple different light shapes on the basis of a single light source.

A further technical problem to be solved by the present invention is to provide a vehicle lamp system, which can form a variety of light shapes with a relatively simple structure.

In addition, the technical problem to be solved by the present invention is to provide a vehicle.

In order to solve the above technical problems, one aspect of the present invention provides a segmented reflector for vehicle lights, including a reflector; the reflector includes a plurality of reflector segments, and each of the reflector segments is adapted to move independently, Different light shapes can be formed by changing the reflection state of the reflector.

Preferably, the reflector plate further includes a rotating shaft, and a plurality of the reflector plate segments are sleeved on the rotating shaft and are adapted to independently rotate around the rotating shaft. Through this preferred technical solution, the reflector section changes the reflective state of the reflector by rotating around the axis of rotation, which is flexible in action and has a wide range of changes in the reflective state. The reflective state of the reflector section changes to other reflectors. The light reflected by the board section has little interference.

Further preferably, the segmented reflector for vehicle lamps of the present invention further includes a drive motor, and a drive worm is provided on the drive shaft of the drive motor; a fan-shaped worm wheel is provided at one end of the rotating shaft of the reflector section The fan-shaped worm wheel is adapted to rotate around the rotation axis under the driving of the drive worm, so as to be able to drive the reflector section to rotate around the rotation axis. In this preferred technical solution, the driving motor drives the reflector section to rotate by driving a worm to drive a fan-shaped worm gear, which is flexible and convenient to control and accurately controls the rotation position of the reflector section.

Further, the segmented reflector for vehicle lamps of the present invention further includes a bracket, the rotating shaft is installed on the bracket, and the driving motor is also installed on the bracket respectively. Through this preferred technical solution, the rotating shaft and the drive motor are both mounted on the bracket, the positioning between the drive motor and the reflector section is relatively accurate, and the drive motor faces the reflector. The rotary drive of the segments is smoother, and it is also more conducive to the arrangement of the relative positions between the drive motors.

Preferably, the segmented reflector for vehicle lights of the present invention further includes a movement control mechanism; each of the reflector segments is adapted to move under the control of the corresponding movement control mechanism. In this preferred technical solution, the relative position of each of the reflector segments in the linear direction is controlled by a movement control mechanism to control the reflection state of the reflector to form different light shapes, and the space of the reflector is small. , The layout is more convenient.

Preferably, the reflective surface of the reflective plate is flat or curved. In this preferred technical solution, the flat reflective surface is easy to process, the formation of the light shape is simpler, and the control is more convenient; the curved reflective surface has more flexible control of the light shape, and the light shape that can be formed is more diverse, but reflective The design of the board and the control of each reflector section are more complicated.

The second aspect of the present invention provides a vehicle lamp system, which includes a light source, and also includes the segmented reflector for vehicle lamps provided in the first aspect of the present invention.

Preferably, the vehicle light system of the present invention further includes a reflector, the reflector includes a light outlet, the light source is arranged in the reflector, and the reflector is arranged at the light outlet to enable the The light emitted by the light source is directed from the light outlet to the reflector, and is reflected by the reflector to form a light shape. In this preferred technical solution, the light emitted by the light source is collected by the reflector and then emitted from the light outlet to the reflector, and is directly irradiated in front of the vehicle lamp by the reflection of the reflector to form a light shape. The shape of the light shape is directly determined by the reflection state of the reflector, the structure is simple, and the light shape is easily formed; the use of the reflector improves the utilization rate of light emitted by the light source.

Further preferably, the vehicle lamp system of the present invention further includes a lens, and the reflector plate is adapted to reflect the light emitted by the light source to the lens, and the light shape is formed by the projection of the lens. Through this preferred technical solution, the lens projects the light reflected by the reflector, which can improve the concentration of light and make the light shape clearer.

Preferably, each of the reflector segments can be switched to different positions, so that the light emitted by the light source can be selectively switched to one of different light shapes. In this preferred technical solution, when each of the reflector segments of the reflector is switched to different positions, the reflector can switch to different reflection states, and the light emitted by the light source is reflected by the reflector, You can selectively switch to different light shapes.

Further preferably, the different illumination light shapes include at least a high beam light shape and an adaptive high beam light shape. In this specific technical solution, when each of the reflector segments is in the initial state, the light emitted by the light source is reflected by the reflector to form a high beam shape, and on the basis of the high beam shape, a specific position is controlled The movement of the reflector section changes its reflection state to form an adaptive high beam light shape.

The third aspect of the present invention provides a vehicle, which includes the vehicle light system provided by the second aspect of the present invention.

Through the above technical solution, in the segmented reflector for vehicle lights of the present invention, each reflector section can move independently, so that the reflector can form a variety of different reflection states, which can be used without changing the state of the vehicle light source. Reflect the light emitted by the car light source to form a variety of different light shapes. The vehicle lamp system of the present invention adopts the segmented reflector for vehicle lamps of the present invention, which can easily form a variety of different light shapes. It has the advantages of simple structure and convenient control. The vehicle of the present invention uses the vehicle light system of the present invention and also has the above advantages.

Description of the drawings

Fig. 1 is a structural schematic diagram of a segmented reflector for vehicle lights of the present invention;

Figure 2 is a schematic diagram of a control structure of a reflector section of the present invention;

Fig. 3 is a schematic diagram of a control mode of the reflector section of the present invention;

4 is a schematic diagram of an embodiment of the vehicle light system of the present invention;

Figure 5 is a schematic diagram of a state of a reflector in the car light system of the present invention;

Figure 6 is a cross-sectional view of position A-A in Figure 5;

Figure 7 is a schematic diagram of the screen illuminance in the state of Figure 5;

Fig. 8 is a schematic diagram of another state of the reflector in the vehicle lamp system of the present invention;

Figure 9 is a cross-sectional view of position B-B in Figure 8;

Fig. 10 is a schematic diagram of screen illuminance in the state of Fig. 8.

Description of reference signs

1 Reflective plate 11 Reflective plate section

11a Initial state of reflector section 11b State of reflector section after movement

12 Rotating shaft 13 Sector worm gears

2 Drive motor 21 Drive shaft

22 Drive worm 3 Bracket

4 Light source 5 Reflector

51 Light exit port 6 Lens

Detailed ways

In the present invention, unless otherwise stated, the orientation or positional relationship indicated by the used orientation words such as "up and down" is based on the orientation or positional relationship shown in the drawings.

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the following specific embodiments. .

As shown in Figure 1, an embodiment of the segmented reflector for vehicle lights of the present invention includes a reflector 1; unlike traditional integral reflectors, the reflector 1 of the present invention consists of a plurality of reflector sections 11 They are arranged side by side, and all the reflector sections 11 are combined together to form the reflector 1. Each reflector section 11 can move independently of each other. When each reflector section 11 is in a different position, it forms a different reflection state of the reflector 1, and reflects the light emitted by the light source of the car lamp with the reflection state of the different reflector 1 , The reflected light forms different light shapes. The side of the reflector section 11 of the present invention facing the light source of the vehicle is a reflector surface, which has strong reflectivity. The reflective surfaces of all the reflective plate segments 11 are combined to form the reflective surface of the reflective plate 1. The present invention has no special restrictions on the shape of the reflector section 11, but it is required that the gap between the reflective surfaces of adjacent light barrier sections 11 be as small as possible, so as to reflect more light emitted by the light source of the vehicle lamp. The light shape improves the utilization rate of the light source.

As an embodiment of the segmented reflector for vehicle lights of the present invention, as shown in FIG. 2, the reflector 1 further includes a rotating shaft 12, and each reflector section 11 is sleeved on the rotating shaft 12 side by side, and can Each independently rotates around the rotation axis 12. When each reflector section 11 is in a different rotation state, different reflection states of the reflector 1 are formed.

As a preferred implementation of the previous embodiment, as shown in FIG. 2, the segmented reflector for vehicle lamps of the present invention also has a drive motor 2, and a drive worm 22 is provided on the drive shaft 21 of the drive motor 2; A fan-shaped worm wheel 13 is provided at one end of the rotating shaft 12 of each reflector section 11, and the drive worm 22 is matched with the fan-shaped worm wheel 13. When the driving motor 2 rotates, the fan-shaped worm wheel 13 is driven to rotate around the rotation axis 12, driving the entire reflector plate section. 11 rotates around the rotating shaft 12 so that the reflector section 11 is in different relative positions.

As a preferred implementation of the previous embodiment, as shown in Fig. 3, the segmented reflector for vehicle lamps of the present invention further includes a bracket 3. The rotating shaft 12 is installed on the upper frame of the bracket 3, and the reflector sections 11 are installed side by side on the rotating shaft 12 in the same direction. Each reflector section 11 is correspondingly installed with a driving motor 2, and each driving motor 2 is installed on the lower part of the bracket 3 respectively. The drive motors 2 can be staggered to be installed at different heights of the bracket 3, so that multiple drive motors 2 with relatively large volumes can be accommodated in a small space. The bracket 3 can also restrict each reflector section, so that the rotation position of each reflector section 11 is more accurate.

In some embodiments of the segmented reflector for vehicle lights of the present invention, the segmented reflector for vehicle lights of the present invention has a movement control mechanism, and each reflector section 11 can be driven by the movement control mechanism to reflect light. The length of the plate segment 11 moves linearly. The present invention does not limit the structure of the movement control mechanism and the manner in which it drives the reflector section 11 to move. All driving forms that can realize the position movement of the reflector section 11 of the present invention can be used in the present invention. It can be screw drive, gear drive or hydraulic drive. Those skilled in the art can achieve this in various forms without creative work, and the driving structure will not be described in detail in this specification.

In some embodiments of the segmented reflector for vehicle lights of the present invention, the reflective surface of the reflector 1 may be a flat surface or a curved surface. When the reflective surface is flat, the light shape formed by the reflected light of each reflective plate section 11 is consistent with the light irradiated area on the reflective plate section 11, and the shape of the entire light shape is consistent with the shape of each reflective plate section 11 constituting the reflective surface of the reflective plate The shape is consistent, and the light shape control is intuitive and simple. When the reflective surface is a curved surface, the propagation direction of the light emitted by the car light source can be changed through a specific curved surface to form the required light shape, so the shape and brightness of the light shape are more controllable, but the control form is more complicated .

As a basic embodiment of the vehicle light system of the present invention, the vehicle light system includes a light source 4 and a segmented reflector for vehicle lamps of the present invention, and is formed by reflecting the light emitted by the light source 4 through the segmented reflector of the present invention The illumination light shape of the car light system.

In some embodiments of the vehicle light system of the present invention, as shown in FIG. 4, the vehicle light system includes a light source 4, a reflector 5 and a reflector 1. The light source 4 is installed in the reflector 5. The reflector 5 has a light outlet 51. The light emitted by the light source 4 is reflected by the reflector 5, collected, and then emitted from the light outlet 51, directed toward the reflector 1, and reflected by the reflector 1. After forming a light shape. When the reflector 1 is in different reflection states, different light shapes are formed. The use of the reflector 5 condenses the light emitted by the light source 4 to the direction of the reflector 1 and improves the light utilization rate of the light source 4. The reflector 5 can also be replaced by other light collecting components such as a condenser, as long as it can collect more light to the direction of the reflector 1.

In some embodiments of the vehicle light system of the present invention, as shown in FIG. 4, the vehicle light system of the present invention further includes a lens 6, which is arranged in the light emission direction of the vehicle light system. The light emitted by the light source 4 is directed to the reflector 1, and the reflector 1 reflects the light. The reflection state of the reflector 1 determines the form of the reflected light. The reflected light is directed to the lens 6 and is directed to the road under the refraction of the lens 6 , Forming a light shape on the road. Due to the converging effect of the lens 6, the concentration of the light emitted by the vehicle lamp system is higher, the light shape is clearer and the brightness is higher.

In some embodiments of the vehicle lamp system of the present invention, since each reflector section 11 of the reflector 1 can be independently switched to a different position, different reflection states of the reflector 1 are formed, and the reflector 1 is opposite to the light source 4. When the emitted light is reflected, the reflected light can be selectively switched to one of different light shapes according to the reflection state of the reflector 1 and form different light shapes when irradiated on the road surface.

The specific realization forms of the different light shapes of the car light system of the present invention include high beam light shape and adaptive light shape, and can also include low beam light shape, partial high beam light shape and other light shapes, and can also be various other light shapes. Other required light types can be formed by the segmented reflector of the present invention.

Specifically, as shown in Figures 5 and 6, when each reflector section 11 of the reflector 1 is in an initial state without movement, each reflector section 11 reflects the light emitted by the light source 4 in substantially the same direction. , Combined together to form a light shape. The light type formed in this state is the high beam type, and the screen illuminance diagram of the high beam type is shown in FIG. 7.

As shown in Figures 8 and 9, when a certain reflector section 11 of the reflector 1 moves from the initial state 11a of the reflector section to the post-movement state 11b of the reflector section, and the other reflector sections 11 are in the initial state, the light source The light emitted by 4 cannot illuminate the reflector section 11, and the reflector section 11 cannot reflect the light in the area to form a light shape. The other reflector segments 11 can reflect the light emitted by the light source 4 to form a high beam light shape. Finally, an adaptive high-beam type with shadows in a specific position of the high-beam shape is formed. The screen illuminance diagram of this light type is shown in Figure 10.

Through the above technical solutions, the segmented reflector for vehicle lights of the present invention can independently control each reflector section 11, so that each reflector section 11 can stay in all possible positions, thereby forming a variety of different reflections. The state of the reflector 1 can therefore reflect the light emitted by the light source 4 through one reflector 1 to form a variety of different light shapes. Greatly improve the function of the traditional reflector. The vehicle light system of the present invention adopts the segmented reflector for vehicle lights of the present invention, which can switch a variety of different light shapes, and realizes the functions that cannot be realized by traditional reflector type vehicle lights. Moreover, compared with matrix LED headlights, the car light system of the present invention only uses a single car light module, eliminating the need for matrix-arranged LED light-emitting parts and complicated primary optical components, reducing the volume and weight of the car light ; To avoid the complicated electronic circuits and electronic components required to individually control too many LED light-emitting parts, simplifying the control method. The vehicle of the present invention also has the above advantages due to the use of the lamp system of the present invention.

In the description of the present invention, the description with reference to the terms "some embodiments", "an embodiment" and "an embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples include In at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical concept of the present invention, a variety of simple modifications can be made to the technical solutions of the present invention, including individual specific technical features combined in any suitable manner. In order to avoid unnecessary repetition, the present invention makes various possible combinations. No further explanation. However, these simple modifications and combinations should also be regarded as the contents disclosed in the present invention, and all belong to the protection scope of the present invention.

Claims

A segmented reflector for vehicle lights, characterized in that it comprises a reflector (1); the reflector (1) includes a plurality of reflector sections (11), and each of the reflector sections (11) is suitable for It moves independently to change the reflection state of the reflector (1) to form different light shapes.
The segmented reflector for vehicle lights according to claim 1, wherein the reflector (1) further comprises a rotating shaft (12), and a plurality of the reflector segments (11) are sleeved on the On the rotating shaft (12) and adapted to independently rotate around the rotating shaft (12).
The segmented reflector for vehicle lights according to claim 2, further comprising a drive motor (2), and a drive worm (22) is provided on the drive shaft (21) of the drive motor (2); A fan-shaped worm wheel (13) is provided at one end of the rotating shaft (12) of the reflector section (11), and the fan-shaped worm wheel (13) is adapted to rotate around the rotating shaft under the driving of the driving worm (13). (12) Rotation to be able to drive the reflector section (11) to rotate around the rotation axis (12).
The segmented reflector for vehicle lights according to claim 3, further comprising a bracket (3), the rotating shaft (12) is mounted on the bracket (3), and the driving motor (2) ) Are also installed on the bracket (3) respectively.
The segmented reflector for vehicle lights according to claim 1, further comprising a movement control mechanism; each reflector section (11) is adapted to move under the control of the corresponding movement control mechanism .
The segmented reflector for vehicle lamps according to any one of claims 1-5, wherein the reflective surface of the reflector (1) is a flat surface or a curved surface.
A vehicle lamp system, comprising a light source (4), characterized in that it also comprises the segmented reflector for vehicle lamps according to any one of claims 1-6.
The vehicle lamp system according to claim 7, characterized in that it further comprises a reflector (5), the reflector (5) includes a light outlet (51), and the light source (4) is arranged on the reflector (5). In 5), the reflector (1) is arranged at the light exit (51) to enable the light emitted by the light source (4) to be emitted from the light exit (51) to the reflector (1) ), and form a light shape by the reflection of the reflector (1).
The vehicle lamp system according to claim 7, further comprising a lens (6), and the reflector (1) is adapted to reflect the light emitted by the light source (4) toward the lens (6), The projection of the lens (6) forms a light shape.
The vehicle light system according to claim 8 or 9, characterized in that, each of the reflector segments (11) can be switched to different positions, so that the light emitted by the light source (4) can be selectively switched to different One of the light shapes.
The vehicle light system according to claim 10, wherein the different light shapes include at least a high beam light shape and an adaptive high beam light shape.
A vehicle, characterized by comprising the vehicle light system according to any one of claims 7 to 11.