WO2020248457A1

WO2020248457A1 - High beam and low beam integrated vehicle lamp module

Info

Publication number: WO2020248457A1
Application number: PCT/CN2019/111699
Authority: WO
Inventors: 张洁
Original assignee: 华域视觉科技(上海)有限公司
Priority date: 2019-06-14
Filing date: 2019-10-17
Publication date: 2020-12-17
Also published as: CN110145720B; CN110145720A

Abstract

A vehicle lamp module, relating to the technical field of vehicle illumination. A high beam and a low beam in the vehicle lamp module are integrated, the vehicle lamp module forms the high beam by using light continuously emitted by a light source (1) in a period of rotation around a rotation shaft (5), and achieves switching to the low beam by turning off the light source (1) provided on a radiator (2) in a preset angular range of each period of rotation by means of an electric motor (3), in the preset rotation angle range, the light source (1) does not emit light, and light emitted in other angle ranges of the period of rotation around the rotation shaft (5) forms a low beam illumination light shape of a specific cut-off shape. The structure and the high beam and low beam switching mechanism of the vehicle lamp module are simple, and the utilization rate of the light source is high.

Description

Car light module integrating far and near light

Technical field

The present invention relates to the technical field of vehicle lighting, in particular to a vehicle lamp module integrating far and near light.

Background technique

The invention patent application 201510137921.7 provides the projection type LED automobile high and low beam optical lighting system, which is provided with a reflector for reflecting the light of the LED light source, and a baffle for blocking part of the reflected light is provided in the area where the reflector reflects the light to the convex lens , The corresponding baffle is also provided with a power drive mechanism for the baffle to slide up and down. The power drive mechanism controls the baffle to slide up and down to block the light projected to the oncoming vehicle driver. The edge shape of the baffle makes the light beam shine on the road to form a cut-off line .

In the existing far and near beam integrated vehicle light module, the realization of the low beam function needs to shield the light in the high beam area, resulting in loss of light energy of the light source, and the blocked light will also cause the temperature of the shading plate and its nearby area The sharp rise puts forward higher requirements on the heat resistance of mechanical structures. As an improvement, the invention patent application 201510634463.8 is provided with optical devices corresponding to the light source, such as the first device and the second device. The high beam is turned off by turning off the high beam light source, which avoids the use of shading plates to switch between far and near. However, this method requires the low-beam light source, the high-beam light source, and corresponding optical devices to be installed at the same time, which makes the structure of the vehicle light module more complicated and the cost increases. Moreover, since the far and low beam light sources share a lens, there is a clear dividing line between the high beam and the low beam illumination area, that is, the high beam cannot cover the low beam illumination area, resulting in poor high beam illumination and low light source utilization. .

Summary of the invention

The purpose of the present invention is to provide a vehicle lamp module with a simple structure and a high utilization rate of light source, which integrates far and near light.

In order to achieve the above objective, the present invention provides a vehicle light module with integrated far and near light. The vehicle light module continuously emits light during a rotation period to form a high beam through a light source. The light source is preset in each rotation period. Turn off within the angle range to achieve low beam switching.

Preferably, the vehicle lamp module includes a light emitting unit, a radiator, a motor and a lens;

The light-emitting unit is installed on the radiator, and the radiator is connected to the rotating shaft of the motor, wherein the motor drives the radiator and the light-emitting unit to periodically rotate around the rotating shaft.

Preferably, the rotating shaft deviates from the axis of the radiator;

The intersection of the straight line where the rotation axis is located and the focal plane of the lens is regarded as the rotation center of the light emitting unit, and the rotation center of the light emitting unit is located at the focal point of the lens.

Preferably, when the light-emitting unit is turned off within a predetermined angle range of each rotation period, the light emitted by the light-emitting unit is refracted by the lens to form a low beam shape with a controllable cut-off line shape.

Preferably, the minimum frequency value of the rotation of the shaft is 50-80 Hz.

Preferably, the static light of the light emitting unit is refracted by the lens to form a basic light shape P.

Preferably, a reflector and/or a transparent light conductor are arranged between the light-emitting unit and the lens.

Preferably, the light emitting unit is an LED light source or a laser light source.

Preferably, the vehicle light module further includes a lens holder for installing the lens and a motor holder for installing the motor, and the lens holder is connected to the motor holder and encloses a lens holder for accommodating the The cavity of the radiator.

Through the above technical solution, the light source continuously emits light during the rotation period to form the high beam. When switching to the low beam, the light source is turned off within the preset angle range of the rotation period, and the light source does not emit light in the preset rotation angle range. The light emitted in other angle ranges can form a low beam illumination light shape with a specific cut-off line shape. The structure of the car lamp module and the switching mechanism of the far and near beams are simple, no shading plate is required, the high beam light shape and the low beam light shape are stable, and the light source utilization rate is high.

Description of the drawings

Figure 1 is a schematic diagram of the structure of a car lamp module;

Figure 2 is a front view of the car light module;

Figure 3 is a cross-sectional view taken along line A-A of the vehicle lamp module shown in Figure 2;

Figure 4 is a schematic diagram of the basic light shape P;

Figure 5 is a schematic diagram of the high beam light shape;

Figure 6 is a schematic diagram of the first low beam light shape;

Figure 7 is a schematic diagram of a second low beam light shape;

Fig. 8 is a light output diagram of the application of the reflector in the car lamp module;

Figure 9 is a light emitting diagram of the application of a transparent light conductor in a car lamp module;

Description of reference signs

Light-emitting unit 1; radiator 2; motor 3; lens 4; rotating shaft 5; basic light shape P; cut-off line 6; projection 7 of the center of rotation; lens holder 8; motor holder 9; mirror 10;

Detailed ways

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 are not used to limit the present invention.

The present invention provides a vehicle light module with an integrated far and near light. The vehicle light module continuously emits light during a rotation period to form a high beam through a light source, and the light source is turned off within a preset angle range of each rotation period. Realize low beam switching. The light source continuously emits light during its rotation period to realize the high beam function. When switching to the low beam, the light source is turned off within the preset angle range of the rotation period, and the light source does not emit light within the preset rotation angle range. The light emitted within the angle range can form a low beam illumination light shape with a specific cut-off line shape. The car lamp module does not need to switch the high beam and the low beam through the shading plate, and does not need to be provided with multiple light sources and optical devices. The structure of the car lamp module and the switching mechanism of the far and short beams in the present invention are simple, and the high beam and low beam lighting effects Good, stable light shape, high light source utilization.

As shown in FIGS. 1 to 3, the vehicle lamp module includes a light-emitting unit 1, a radiator 2, a motor 3, and a lens 4. The light-emitting unit 1 is installed on the radiator 2 as a light source, and the radiator 2 is connected to the shaft 5 of the motor 3, wherein the motor 3 drives the radiator 2 and the light-emitting unit 1 around The rotating shaft 5 rotates in a circumferential direction. Each time the radiator 2 and the light-emitting unit 1 installed on the radiator 2 rotate around the rotating shaft 5 once, that is, 360° is a rotation period.

In the present invention, the light continuously emitted by the light-emitting unit 1 during the rotation period is refracted by the lens 4 to form a high beam, and the light-emitting unit 1 is turned off within a preset angle range of each rotation period, so that The light shape changes to realize the low beam switching. Under the condition that the light emission requirement is met, the preset angle range of the present invention may be any angle range of the light emitting unit 1 around the rotating shaft 5 in the rotation period.

One end surface of the radiator 2 is used to install a light source circuit board. The light source circuit board is integrated with at least one light emitting unit 1 and is provided with a control unit for controlling the timing of the light emitting unit 1 on and off. The other end surface opposite to the end surface is connected to the rotating shaft 5 of the motor 3. When the motor 3 is in the standby state, the shaft 5 does not work, the radiator 2 and the light-emitting unit 1 are stationary, and the static light of the light-emitting unit 1 is refracted by the lens 4 to form the basic light shape P shown in FIG. The edge of the light-emitting area has a clear cut-off line 6.

According to a preferred embodiment of the present invention, the rotation axis 5 deviates from the axis of the heat sink 2, and the intersection of the straight line where the rotation axis 5 is located and the focal plane of the lens 4 can be regarded as the rotation center of the light emitting unit 1, and , The rotation center of the light emitting unit 1 is located at the focal point of the lens 4. The light emitting unit 1 rotates around the rotation center, and the rotation angle of each cycle is 360°.

According to a preferred embodiment of the present invention, when the light-emitting unit 1 is turned off within a predetermined angle range of each rotation period, the light emitted by the light-emitting unit 1 is refracted by the lens 4 and formed into a light-dark cut-off line shape. Controlled low beam light shape. In each rotation period of the light-emitting unit 1, by turning off the light-emitting unit 1 within the preset rotation angle range and turning on the other angle ranges, the light-emitting unit 1 does not emit light within the preset rotation angle range. The light emitted in the range is refracted by the lens 4 to form a low-beam light shape with a specific cut-off line shape. It should be noted that the preset angle range of the present invention can be any angle range of the light emitting unit 1 around the rotating shaft 5 in the rotation period. For example, the light emitting unit 1 is 15 degrees to 180 degrees upward from the horizontal line during the rotation period. When closed within the range, the low beam illumination light shape with the cut-off line 6 as shown in FIG. 6 can be formed.

Specifically, when the light-emitting unit 1 rotates around its rotation center, the basic light shape P rotates accordingly. As shown in FIG. 5, the rotation center of the light-emitting unit 1 is projected on the short side midpoint of the basic light shape P (ie, in FIG. The projection 7) of the center of rotation is shown. In any rotation period, the light continuously emitted by the light-emitting unit 1 is formed in the illumination area with the projection 7 of the center of rotation as the center and the midpoint of the two symmetrical short sides of the basic light shape P The connecting line is a circular light shape with a radius, and the circular light shape is the high beam illumination light shape.

According to a specific embodiment, as shown in FIG. 6, the rotation center of the light-emitting unit 1 is projected on the short side midpoint of the basic light shape P. In each rotation period, the light-emitting unit 1 emits light and rotates from the initial position of the horizontal line. The center rotates in the counterclockwise direction. When the light-emitting unit 1 rotates to 15 degrees upwards from the horizontal line, it turns off. During the entire rotation period, it turns off continuously from 15 degrees to 180 degrees upwards from the horizontal line. Correspondingly, the basic light shape P starts from the starting position. , Take the projection 7 of the rotation center as the center, and rotate with the midpoint connection of the two symmetrical short sides of the basic light shape P as the radius until the light-emitting unit 1 is turned off. With the high-speed rotation of the light-emitting unit 1, the light emitted by the light-emitting unit 1 After being refracted by the lens 4, the first low beam shape as shown in FIG. 6 is formed.

According to another specific embodiment, as shown in FIG. 7, the rotation center is projected on a vertex of the basic light shape P, that is, the projection 7 of the rotation center shown in FIG. 7, when the light emitting unit 1 rotates around the rotation center and emits light , By turning off the light emitting unit 1 in another rotation angle range of the rotation period, the second low beam light shape as shown in FIG. 7 is formed.

It should be noted that the shape of the cut-off line of the low beam light shape is related to the closing angle range of the light-emitting unit 1 or the position of the rotation center. The high beam light shape or the low beam light shape shown in FIGS. 5 to 7 is only For example, the actual application is not limited to the above shape.

According to a preferred embodiment of the present invention, the minimum frequency value of the rotation of the rotating shaft 5 is 50-80 Hz. Driven by the motor 3, the rotating shaft 5 drives the radiator 2 and the light emitting unit 1 on the radiator 2 to rotate at a high speed around the rotating shaft 5, so that the light emitted by the light emitting unit 1 is refracted by the lens 4 to form an illumination light shape that also rotates at high speed Since the rotation frequency of the illumination light shape is generally not less than 50 Hz, which is greater than the frequency at which the human eye can recognize the number of frames, road users can observe a light shape with a specific cut-off line shape in the illuminated area.

According to a preferred embodiment of the present invention, as shown in FIGS. 8 and 9, a reflector 10 and/or a transparent light conductor 11 are arranged between the light-emitting unit 1 and the lens 4. Taking the transparent light conductor 11 as an example, the transparent light conductor 11 has an entrance surface and an exit surface to guide the light emitted by the light source from the entrance surface to the exit surface, and is refracted by the lens 4 to form a basic light shape P.

According to a preferred embodiment of the present invention, the light-emitting unit 1 is an LED light source or a laser light source. Preferably, the light emitting unit 1 is an LED chip, and the LED chip is packaged on a light source circuit board.

According to a preferred embodiment of the present invention, the vehicle lamp module further includes a lens holder 8 for installing the lens 4 and a motor holder 9 for installing the motor 3. The lens holder 8 and the motor holder 9 are mechanically connected to form a cavity for accommodating the heat sink 2. The heat sink 2 and the light-emitting unit 1 arranged on the heat sink 2 rotate around the rotating shaft 5 in the cavity.

The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various technical features in any other suitable manner. These simple modifications and combinations should also be regarded as the disclosed content of the present invention. All belong to the protection scope of the present invention.

Claims

A vehicle light module integrating far and near beams, characterized in that the vehicle light module continuously emits light during a rotation period to form a high beam through a light source, and the light source is turned off within a preset angle range of each rotation period Realize low beam switching.
The vehicle light module according to claim 1, wherein the vehicle light module comprises a light emitting unit, a radiator, a motor and a lens;

The light-emitting unit is installed on the radiator, and the radiator is connected to the rotating shaft of the motor, wherein the motor drives the radiator and the light-emitting unit to periodically rotate around the rotating shaft.
4. The vehicle lamp module of claim 2, wherein the rotating shaft deviates from the axis of the radiator;

The intersection of the straight line where the rotation axis is located and the focal plane of the lens is regarded as the rotation center of the light emitting unit, and the rotation center of the light emitting unit is located at the focal point of the lens.
The vehicle lamp module according to claim 2 or 3, wherein the minimum frequency of the rotation of the shaft is 50-80 Hz.
The vehicle lamp module according to claim 4, wherein when the light emitting unit is turned off within a predetermined angle range of each rotation period, the light emitted by the light emitting unit is refracted by the lens to form a bright and dark cutoff Low beam shape with controllable line shape.
3. The vehicle lamp module of claim 2, wherein the static light of the light emitting unit is refracted by the lens to form a basic light shape P.
The vehicle lamp module according to claim 6, wherein a reflector and/or a transparent light conductor are provided between the light-emitting unit and the lens.
The vehicle light module according to claim 2, wherein the light-emitting unit is an LED light source or a laser light source.
The vehicle light module according to claim 2, wherein the vehicle light module further comprises a lens holder for installing the lens and a motor holder for installing the motor, the lens holder and the motor The motor bracket is connected to and encloses a cavity for accommodating the radiator.