TWI881415B - High-beam lighting with switchable low-beam and high-beam illumination - Google Patents

Abstract

A high-beam lighting with switchable low-beam and high-beam illumination has a high beam lighting unit and a grating unit. The grating unit is disposed on the direct light traveling path of the high beam lighting unit. The grating unit has a light-receiving-and-light-transmitting conductive element, a light-emitting-and-light-transmitting conductive element and a light-angle-adjustment element. The light-angle-adjustment element is disposed between the light-receiving-and-light-transmitting conductive element and the light-emitting-and-light-transmitting conductive element. The electric field changes applied by the light-receiving-and-light-transmitting conductive element and the light-emitting-and-light-transmitting conductive element change the alignment angle of the liquid crystal material of the light-angle-adjustment element so that the direct light traveling path is adjusted to be switched between a high-beam mode and a low-beam mode.

Description

High beam lighting with switchable low beam and high beam function

The present invention relates to a high-beam lighting device, and in particular to a high-beam lighting device having the function of switching between low-beam and high-beam illumination.

The high-beam and low-beam lighting device has two sets of lighting devices, one of which is used for high-beam illumination and the other is used for low-beam illumination. The user switches between the two sets of lighting devices according to lighting needs to switch between the high-beam illumination function and the low-beam illumination function. In other words, the high-beam and low-beam lighting device of the prior art needs to pay the corresponding material cost for being equipped with two sets of lighting devices, and also needs to have enough space to accommodate the volume occupied by the two sets of lighting devices.

Therefore, the purpose of the present invention is to provide a high-beam lighting device that can switch between low-beam and high-beam lighting, which can reduce the volume and cost of the high-beam and low-beam lighting devices of the prior art.

The technical means adopted by the present invention to solve the problems of the prior art is to provide a high-beam lighting device with a switchable low-beam and high-beam irradiation function, comprising: a high-beam lighting unit having a lighting device, wherein the high-beam lighting unit is configured to generate direct light; and a light gate unit, which is configured on the light travel path of the direct light of the high-beam lighting unit, and the light gate unit has a light-receiving and light-transmitting conductive element, a light-emitting and light-transmitting conductive element, and a light angle adjustment element. The light-transmitting conductive element is arranged on the light-incident side of the light gate unit to receive the direct light, the light angle adjustment element is arranged between the light-receiving light-transmitting conductive element and the light-emitting light-transmitting conductive element, and the direct light travels through the light angle adjustment element of the light gate unit to emit light, the light-emitting light-transmitting conductive element is arranged on the light-emitting side of the light gate unit to allow the direct light to leave the light-emitting light-transmitting conductive element, the light angle adjustment element at least includes a liquid crystal material, and the light angle adjustment element The element is arranged so that when the light-receiving transparent conductive element and the light-emitting transparent conductive element receive the high-beam/low-beam switching control signal, the electric field applied by the light-receiving transparent conductive element and the light-emitting transparent conductive element to the light angle adjustment element changes, thereby changing the arrangement angle of the liquid crystal material and adjusting the light travel direction of the direct light, thereby correspondingly switching between the high-beam irradiation mode and the low-beam irradiation mode. In the high-beam irradiation mode, the arrangement angle of the liquid crystal material is parallel In the incident direction of the direct light to the light gate unit, the direct light is made to be emitted in parallel with the incident direction of the light after passing through the light gate unit, so as to perform high beam illumination, and in the low beam illumination mode, the arrangement angle of the liquid crystal material is inclined to the incident direction of the direct light to the light gate unit, so that the direct light is diffusely emitted in a direction inclined to the incident direction of the light after passing through the light gate unit, so as to perform low beam illumination.

In one embodiment of the present invention, a high-beam lighting device having the function of switching between low-beam and high-beam illumination is provided, wherein the light angle adjustment element of the light gate unit further comprises a polymer material, and the polymer material is a UV-curing glue, an acrylic glue, a pressure-sensitive glue or a heat-curing glue.

In one embodiment of the present invention, a high-beam lighting device having a switchable low-beam and high-beam irradiation function is provided, wherein the liquid crystal material of the light angle adjustment element is polymer dispersed liquid crystal (PDLC), polymer dispersed cholesterol liquid crystal (PDCLC), polymer network liquid crystal (PNLC) or multi-stable liquid crystal (MSLC).

In one embodiment of the present invention, a high-beam lighting device having a switchable low-beam and high-beam irradiation function is provided, wherein the high-beam/low-beam switching control signal is intermittently applied to the light-receiving transparent conductive element and the light-emitting transparent conductive element, the high-beam/low-beam switching control signal is transmitted to the light gate unit according to the control unit, and the light angle adjustment element is arranged so that the liquid crystal material of the multi-stable liquid crystal changes the arrangement angle of the high-beam lighting device in the high-beam irradiation mode according to the high-beam/low-beam switching control signal.

In one embodiment of the present invention, a high-beam lighting device with a switchable low-beam and high-beam illumination function is provided, wherein the light-receiving transparent conductive element of the light gate unit has a plurality of control blocks. According to the high-beam/low-beam switching control signal transmitted by the control unit, the light-emitting transparent conductive element acts as a common electrode and cooperates with the plurality of control blocks to generate electric field changes to change the liquid crystal arrangement angle of the portion of the light angle adjustment element located between the plurality of control blocks and the light-emitting transparent conductive element to form the high-beam illumination mode or the low-beam illumination mode.

In one embodiment of the present invention, a high-beam lighting device with a switchable low-beam and high-beam illumination function is provided, wherein the light-emitting transparent conductive element of the light gate unit has a plurality of control blocks. According to the high-beam/low-beam switching control signal transmitted by the control unit, the light-receiving transparent conductive element acts as a common electrode and cooperates with the plurality of control blocks to generate electric field changes to change the liquid crystal arrangement angle of the light angle adjustment element located between the light-receiving transparent conductive element and the plurality of control blocks to form the high-beam illumination mode or the low-beam illumination mode.

In one embodiment of the present invention, a high-beam lighting device having a switchable low-beam and high-beam irradiation function is provided, wherein the light-receiving, light-transmitting conductive element of the light gate unit has a plurality of control blocks, and the light-emitting, light-transmitting conductive element has a plurality of control blocks corresponding to the plurality of control blocks of the light-receiving, light-transmitting conductive element in a one-to-one position, wherein the plurality of control blocks of the light-receiving, light-transmitting conductive element The control blocks and the plurality of control blocks of the light-emitting transparent conductive element generate electric field changes according to the high-beam/low-beam switching control signal transmitted by the control unit, thereby changing the liquid crystal arrangement angle of the light angle adjustment element located between the plurality of control blocks of the light-receiving transparent conductive element and the plurality of control blocks of the light-emitting transparent conductive element to form the high-beam irradiation mode or the low-beam irradiation mode.

In one embodiment of the present invention, a high-beam lighting device with a switchable low-beam and high-beam irradiation function is provided, wherein the high-beam lighting unit has a plurality of lighting devices arranged in an array, wherein the light-receiving, transparent conductive element of the photogate unit has a plurality of control blocks, and the light-emitting, transparent conductive element has a plurality of control blocks corresponding to the plurality of control blocks of the light-receiving, transparent conductive element in position one-to-one, wherein the plurality of control blocks of the light-receiving, transparent conductive element and the plurality of control blocks of the light-emitting, transparent conductive element are switched according to the high-beam/low-beam switching signal transmitted by the control unit. The control signal is converted to generate an electric field change to change the liquid crystal arrangement angle of a portion of the light angle adjustment element between the plurality of control blocks of the light receiving transparent conductive element and the plurality of control blocks of the light emitting transparent conductive element to form the high beam illumination mode or the low beam illumination mode, wherein the plurality of control blocks of the light receiving transparent conductive element and/or the plurality of control blocks of the light emitting transparent conductive element of the light gate unit correspond one-to-one to the plurality of lighting devices of the high beam illumination unit in terms of position, and the high beam illumination unit is configured so that a portion of the lighting device emits the direct light.

In one embodiment of the present invention, a high-beam lighting device having the function of switching between low beam and high beam is provided, wherein the lighting device of the high-beam lighting unit is an incandescent lamp, a low-pressure gas discharge lamp, a low-pressure sodium lamp, a cold cathode lamp, a high-intensity gas discharge lamp, a light-emitting diode, an electromagnetic induction lamp or a laser lighting lamp.

In one embodiment of the present invention, a high-beam lighting device with a switchable low-beam and high-beam irradiation function is provided, further comprising a control unit, wherein the control unit is configured to transmit the high-beam/low-beam switching control signal to the light gate unit and automatically adjust the high-beam/low-beam switching control signal according to: the travel speed of the vehicle on which the high-beam lighting device with a switchable low-beam and high-beam irradiation function is installed, and/or the relative distance between the vehicle and the object in front of the vehicle, so that the arrangement angle of the liquid crystal material of the light angle adjustment element is dynamically adjusted within the operating range between: the high-beam irradiation mode with high illumination brightness and concentrated projection area, and the low-beam irradiation mode with low illumination brightness and diffuse projection area.

The technical means adopted by the high-beam lighting device with the switchable low-beam and high-beam illumination functions of the present invention can achieve the following technical effects. The direct light emitted by a single high-beam lighting unit is switched between the high-beam illumination mode and the low-beam illumination mode by means of a light gate unit, so as to reduce the volume and cost of the high-beam and low-beam lighting device.

100: High-beam lighting equipment with the function of switching between low-beam and high-beam illumination

100A: High-beam lighting equipment with the function of switching between low-beam and high-beam illumination

100B: High-beam lighting equipment with the function of switching between low-beam and high-beam illumination

100C: High-beam lighting equipment with the function of switching between low-beam and high-beam illumination

100D: High-beam lighting equipment with the ability to switch between low-beam and high-beam

100E: High-beam lighting equipment with the function of switching between low-beam and high-beam

1: High beam lighting unit

1A: High beam lighting unit

11: Reflective cup body

11A: Convex lens

12: Lighting parts

1E: High beam lighting unit

101E: First lighting device

102E: First lighting device

103E: First lighting device

104E: First lighting device

2: Optical gate unit

2B: Optical gate unit

2C: Photogate unit

2D: Optical gate unit

2E: Optical gate unit

21: Light-receiving and light-transmitting conductive element

21B: Light-receiving and light-transmitting conductive element

211B: First control block

212B: Second control block

213B: The third control block

214B: Fourth control block

21C: Light-receiving and light-transmitting conductive element

21D: Light-receiving and light-transmitting conductive element

211D: First control block

212D: Second control block

213D: The third control block

214D: Fourth control block

21E: Light-receiving and light-transmitting conductive element

211E: First control block

212E: Second control block

213E: Third control block

214E: Fourth control block

22: Light-emitting and translucent conductive element

22B: Light-emitting and translucent conductive element

221B: First control block

222B: Second control block

223B: The third control block

224B: Fourth control block

22C: Light-emitting and translucent conductive element

221C: First control block

222C: Second control block

223C: The third control block

224C: Fourth control block

22D: Light-emitting and translucent conductive element

22E: Light-emitting and translucent conductive element

221E: First control block

222E: Second control block

223E: Third control block

224E: Fourth control block

23: Light angle adjustment element

23B: Light angle adjustment element

23C: Light angle adjustment element

23D: Light angle adjustment element

23E: Light angle adjustment element

231: Liquid crystal materials

232:Polymer materials

B: Control unit

[Figure 1] is a side view schematic diagram showing a high-beam lighting device with a function of switching between low beam and high beam according to the first embodiment of the present invention; [Figure 2] is a cross-sectional schematic diagram showing a high-beam lighting unit of a high-beam lighting device with a function of switching between low beam and high beam according to the first embodiment of the present invention; [Figure 3] is a side view schematic diagram showing a high-beam lighting unit of a high-beam lighting device with a function of switching between low beam and high beam according to the second embodiment of the present invention; [Figure 4] is a side view schematic diagram showing a high-beam lighting device with a function of switching between low beam and high beam according to an embodiment of the present invention in a high-beam lighting mode; [Figure 5] is a cross-sectional schematic diagram showing a high-beam lighting unit of a high-beam lighting device with a function of switching between low beam and high beam according to an embodiment of the present invention A side view schematic diagram of a high-beam lighting device having a function of switching between low beam and high beam in low beam illumination mode; [Figure 6] is a side view schematic diagram showing a high-beam lighting device having a function of switching between low beam and high beam according to the third embodiment of the present invention; [Figure 7] is a side view schematic diagram showing a high-beam lighting device having a function of switching between low beam and high beam according to the fourth embodiment of the present invention; [Figure 8] is a side view schematic diagram showing a high-beam lighting device having a function of switching between low beam and high beam according to the fifth embodiment of the present invention; and [Figure 9] is a side view schematic diagram showing a high-beam lighting device having a function of switching between low beam and high beam according to the sixth embodiment of the present invention.

The following describes the implementation of the present invention based on Figures 1 to 9. The description is not intended to limit the implementation of the present invention, but is an example of the implementation of the present invention.

As shown in Figures 1 and 2, a high-beam lighting device 100 having a switchable low-beam and high-beam illumination function according to the first embodiment of the present invention comprises: a high-beam lighting unit 1 and a light gate unit 2. Thus, the present invention switches the illumination function of the direct light emitted by the high-beam lighting unit 1 between the high-beam illumination mode and the low-beam illumination mode through the light gate unit 2, so as to reduce the volume and cost of the high-beam and low-beam lighting device of the prior art.

The high-beam lighting unit 1 has a lighting device, wherein the high-beam lighting unit 1 is configured to generate direct light. In the specific embodiment disclosed in the present invention, as shown in FIG. 1 and FIG. 2, the high-beam lighting device 100 having the function of switching between low beam and high beam illumination according to the first embodiment of the present invention, wherein the lighting device of the high-beam lighting unit 1 has a reflective cup body 11 and a lighting fixture 12. The reflective cup body 11 has a concave portion, which is an arc-shaped light reflecting mirror surface formed in the reflective cup body 11. The lighting fixture 12 is arranged in the reflective cup body 11 in a manner corresponding to the optical focus of the concave portion to reflect the lighting light of the lighting fixture 12 through the concave portion, and the reflected lighting light is emitted from the opening of the reflective cup body 11 to become the direct light.

Of course, the embodiments disclosed by the present invention for the high-beam lighting unit are not limited to the above. As shown in FIG. 3, the difference between the high-beam lighting device 100A with the function of switching between low beam and high beam illumination of the second embodiment of the present invention and the high-beam lighting device 100 with the function of switching between low beam and high beam illumination of the first embodiment is that the lighting device of the high-beam lighting unit 1A has a convex lens body 11A and a lighting fixture 12. The lighting fixture 12 is arranged on one side of the convex lens body 11A in a manner corresponding to the optical focus of the convex lens body 11A, and the lighting light of the lighting fixture 12 passes through the convex lens body 11A and is guided as the direct light.

Furthermore, the lighting device of the high-beam lighting unit disclosed in the present invention can be: incandescent lamp (tungsten filament bulb or halogen lamp), low-pressure gas discharge lamp (such as energy-saving bulb, which is a fluorescent bulb with "fluorescent lamp and ballast built-in"), low-pressure sodium lamp, cold cathode fluorescent lamp (CCFL, Cold Cathode Fluorescent Lamp), high-intensity gas discharge lamp (HID, High-Intensity Discharge, such as: high-pressure mercury lamp, high-pressure sodium lamp, and complex metal lamp, among which complex metal lamp is also called metal halide lamp, Metal halide lamps), light-emitting diodes (LEDs), electromagnetic induction lamps (also called electrodeless lamps), or laser lighting.

As shown in Figures 1, 4 and 5, the light gate unit 2 is arranged on the light path of the direct light of the far-beam lighting unit 1. The light gate unit 2 has a light-receiving and light-transmitting conductive element 21, a light-emitting and light-transmitting conductive element 22, and a light angle adjustment element 23.

For example, the light-receiving, transparent conductive element 21 and the light-emitting, transparent conductive element 22 each have a transparent substrate and a transparent conductive layer disposed on the transparent substrate. For example, the light-receiving, transparent conductive element 21 or the light-emitting, transparent conductive element 22 is a transparent conductive film; or, the light-receiving, transparent conductive element 21 or the light-emitting, transparent conductive element 22 is a transparent conductive glass.

In detail, as shown in FIG. 1, FIG. 4 and FIG. 5, the light receiving transparent conductive element 21 is arranged on the light incident side of the light gate unit 2 to receive the direct light. The light angle adjustment element 23 is arranged between the light receiving transparent conductive element 21 and the light emitting transparent conductive element 22, so that the direct light travels through the light angle adjustment element 23 of the light gate unit 2 and emits light. The light emitting transparent conductive element 22 is arranged on the light emitting side of the light gate unit 2 so that the direct light leaves from the light emitting transparent conductive element 22.

Furthermore, as shown in FIG. 1, FIG. 4 and FIG. 5, the light angle adjustment element 23 at least includes a liquid crystal material 231. Moreover, the light angle adjustment element 23 is configured such that when the light receiving transparent conductive element 21 and the light emitting transparent conductive element 22 receive a high beam/low beam switching control signal, the arrangement angle of the liquid crystal material 231 is changed by the change of the electric field applied to the light angle adjustment element 23 by the light receiving transparent conductive element 21 and the light emitting transparent conductive element 22, and the light traveling direction of the direct light is adjusted, thereby correspondingly switching between the high beam irradiation mode and the low beam irradiation mode. Specifically, the high beam/low beam switching control signal is transmitted to the light gate unit 2 according to the control unit B; the control unit B can be an external operation button operated by the user, or a computer device that performs calculations based on preset judgment conditions and operating parameters.

For example, the high beam/low beam switching control signal may be a voltage and/or a frequency and/or a signal waveform.

In detail, as shown in FIG. 1 and FIG. 4, in the far-beam illumination mode, the arrangement angle of the liquid crystal material 231 is parallel to the incident direction of the direct light to the light gate unit 2. In this way, after the direct light passes through the light gate unit 2, it is parallel to the incident direction of the light to be emitted, so as to perform far-beam illumination.

As shown in Figures 1 and 5, in the low beam illumination mode, the arrangement angle of the liquid crystal material 231 is inclined to the incident direction of the direct light relative to the light gate unit 2. In this way, after the direct light passes through the light gate unit 2, it is diffused and emitted in a direction inclined to the incident direction of the light, so as to perform low beam illumination.

As shown in FIG. 1, FIG. 4 and FIG. 5, the high-beam lighting device 100 with the function of switching between low beam and high beam of the present invention further includes a control unit B. The control unit B is configured to transmit the high-beam/low-beam switching control signal to the light gate unit 2 and automatically adjust the high-beam/low-beam switching control signal according to: the travel speed of the vehicle (not shown) on which the high-beam lighting device 100 with the function of switching between low beam and high beam is installed, and/or the relative distance between the vehicle and the object in front of the vehicle, so that the arrangement angle of the liquid crystal material of the light angle adjustment element 23 is dynamically adjusted within the operating range between: the high-beam irradiation mode with high illumination brightness and concentrated projection area, and the low-beam irradiation mode with low illumination brightness and diffuse projection area.

For example, when the vehicle is moving at a high speed (e.g., the speed exceeds 80 km/hr), the light angle adjustment element 23 is in the high beam illumination mode of "high illumination brightness and concentrated projection area"; conversely, when the vehicle is moving at a slow speed (e.g., the speed is less than 30 km/hr), the light angle adjustment element 23 is in the low beam illumination mode of "low illumination brightness and diffuse projection area". In addition, when the object detection device (not shown) transmits an object proximity signal to the control unit B, as the relative distance between the vehicle and the object in front of the vehicle changes from far to near, the light angle adjustment element 23 will gradually adjust from "the high beam illumination mode" to "the low beam illumination mode" to illuminate the object in a manner of "low illumination brightness and diffuse projection area".

As shown in FIG. 4 and FIG. 5, according to the high-beam lighting device 100 having the function of switching between low-beam and high-beam illumination according to an embodiment of the present invention, the light angle adjustment element 23 of the light gate unit 2 further comprises a polymer material 232.

According to the embodiment of the present invention, the high-beam lighting device 100 has the function of switching between low-beam and high-beam illumination, wherein the polymer material 232 of the light angle adjustment element 23 is ultraviolet curing glue, acrylic glue, pressure-sensitive glue or heat-curing glue.

According to the high-beam lighting device 100 having the function of switching between low-beam and high-beam illumination according to the embodiment of the present invention, the liquid crystal material 231 of the light angle adjustment element 23 is polymer-dispersed liquid crystal (PDLC).

According to an embodiment of the present invention, a high-beam lighting device 100 having a switchable low-beam and high-beam irradiation function, wherein the liquid crystal material 231 of the light angle adjustment element 23 is polymer-dispersed cholesterol liquid crystal (PDCLC, Polymer-Dispersed Cholesteric Liquid Crystal).

According to the high-beam lighting device 100 having the function of switching between low-beam and high-beam illumination according to the embodiment of the present invention, the liquid crystal material 231 of the light angle adjustment element 23 is a polymer network liquid crystal (PNLC).

According to an embodiment of the present invention, a high-beam lighting device 100 having a switchable low-beam and high-beam illumination function, wherein the liquid crystal material 231 of the light angle adjustment element 23 is a multi-stable liquid crystal (MSLC, Multi-Stable Liquid Crystal).

Furthermore, in the high-beam lighting device 100 having the function of switching between low-beam and high-beam illumination according to the embodiment of the present invention, the high-beam/low-beam switching control signal is intermittently applied to the light-receiving transparent conductive element 21 and the light-emitting transparent conductive element 22. The light angle adjustment element 23 is configured to change the arrangement angle of the liquid crystal material, which is the multi-stable liquid crystal, in the high-beam illumination mode according to the high-beam/low-beam switching control signal. In other words, when the light-receiving transparent conductive element 21 and the light-emitting transparent conductive element 22 do not receive the high-beam/low-beam switching control signal, the liquid crystal material (which is the multi-stable liquid crystal) remains at the arrangement angle that makes the high-beam lighting device 100 in the high-beam illumination mode.

As shown in FIG. 6 , the difference between the high-beam lighting device 100B having the function of switching between low-beam and high-beam illumination of the third embodiment of the present invention and the high-beam lighting device 100 having the function of switching between low-beam and high-beam illumination of the first embodiment is that the light-receiving, light-transmitting conductive element 21B of the light gate unit 2B has a plurality of control blocks 211B to 214B, and the light-emitting, light-transmitting conductive element 22B also has a plurality of control blocks 211B to 214B. The control blocks 221B to 224B correspond one-to-one to the multiple control blocks 211B to 214B of the light-receiving, transparent conductive element 21B, wherein the multiple control blocks 211B to 214B of the light-receiving, transparent conductive element 21B and the multiple control blocks 221B to 224B of the light-emitting, transparent conductive element 22B can be regionally separated by transparent conductive film etching technology. Specifically, the light-receiving, transparent conductive element 21B has a first control block 211B, a second control block 212B, a third control block 213B and a fourth control block 214B; and, the light-emitting, transparent conductive element 22B has a first control block 221B, a second control block 222B, a third control block 223B and a fourth control block 224B, which correspond one-to-one in position to the first control block 211B, the second control block 212B, the third control block 213B and the fourth control block 214B. For example, according to the high beam/low beam switching control signal transmitted by the control unit B, the first control block 211B and the first control block 221B generate electric field changes to change the liquid crystal arrangement angle of the portion of the light angle adjustment element 23B located between the first control block 211B and the first control block 221B to form the high beam illumination mode; in addition, the fourth control block 214B and the fourth control block 224B generate electric field changes according to the high beam/low beam switching control signal to change the liquid crystal arrangement angle of the portion of the light angle adjustment element 23B located between the fourth control block 214B and the fourth control block 224B to form the low beam illumination mode.

As shown in FIG7 , the difference between the high-beam lighting device 100C having the function of switching between low beam and high beam of the fourth embodiment of the present invention and the high-beam lighting device 100 having the function of switching between low beam and high beam of the first embodiment is that the light-emitting transparent conductive element 22C of the light gate unit 2C has a plurality of control blocks: a first control block 221C, a second control block 222C, a third control block 223C and a fourth control block 224C. For example, according to the high beam/low beam switching control signal transmitted by the control unit B, the light-receiving transparent conductive element 21C acts as a common electrode and cooperates with the first control block 221C to generate an electric field change to change the liquid crystal arrangement angle of the portion of the light angle adjustment element 23C located between the light-receiving transparent conductive element 21C and the first control block 221C to form the high beam irradiation mode; and, according to the high beam/low beam switching control signal, the light-receiving transparent conductive element 21C cooperates with the fourth control block 224C to generate an electric field change to change the liquid crystal arrangement angle of the portion of the light angle adjustment element 23C located between the light-receiving transparent conductive element 21C and the fourth control block 224C to form the low beam irradiation mode.

As shown in FIG8 , the difference between the high-beam lighting device 100D having the function of switching between low beam and high beam of the fifth embodiment of the present invention and the high-beam lighting device 100 having the function of switching between low beam and high beam of the first embodiment is that the light-receiving, transparent conductive element 21D of the photogate unit 2D has a plurality of control blocks: a first control block 211D, a second control block 212D, a third control block 213D and a fourth control block 214D. For example, according to the high beam/low beam switching control signal transmitted by the control unit B, the light-emitting transparent conductive element 22D acts as a common electrode and cooperates with the first control block 211D to generate an electric field change to change the liquid crystal arrangement angle of the portion of the light angle adjustment element 23D located between the first control block 211D and the light-emitting transparent conductive element 22D to form the high beam irradiation mode; and, according to the high beam/low beam switching control signal, the light-emitting transparent conductive element 22D cooperates with the fourth control block 214D to generate an electric field change to change the liquid crystal arrangement angle of the portion of the light angle adjustment element 23D located between the fourth control block 214D and the light-emitting transparent conductive element 22D to form the low beam irradiation mode.

As shown in FIG. 9 , the difference between the high-beam lighting device 100E having the function of switching between low beam and high beam of the sixth embodiment of the present invention and the high-beam lighting device 100 having the function of switching between low beam and high beam of the first embodiment lies in that: the high-beam lighting unit 1E has a plurality of lighting devices arranged in an array; and the light-receiving transparent conductive element 21E and the light-emitting transparent conductive element 22E of the photogate unit 2E respectively have a plurality of control blocks, wherein the plurality of control blocks of the light-receiving transparent conductive element 21E and the plurality of control blocks of the light-emitting transparent conductive element 22E correspond one-to-one in position to the plurality of lighting devices of the high-beam lighting unit 1E. Specifically, the high beam lighting unit 1E has a first lighting device 101E, a second lighting device 102E, a third lighting device 103E and a fourth lighting device 104E; the light receiving and light transmitting conductive element 21E has a first control block 211E, a second control block 212E, a third control block 213E and a fourth control block 214E, wherein the first control block 211E, the second control block 212E, the third control block 213E and the fourth control block 214E correspond to the high beam lighting unit one by one in terms of position. The first lighting device 101E, the second lighting device 102E, the third lighting device 103E and the fourth lighting device 104E of the light-emitting transparent conductive element 22E are provided; and the light-emitting transparent conductive element 22E has a first control block 221E, a second control block 222E, a third control block 223E and a fourth control block 224E, and the positions correspond one-to-one to the first control block 211E, the second control block 212E, the third control block 213E and the fourth control block 214E of the light-receiving transparent conductive element 21E. For example, the first lighting device 101E is configured to emit the direct light according to the lighting signal of the use requirement, and to generate an electric field change according to the high beam/low beam switching control signal transmitted by the control unit B to change the portion of the light angle adjustment element 23E located between the first control block 211E of the light receiving transparent conductive element 21E and the first control block 221E of the light emitting transparent conductive element 22E. The liquid crystal arrangement angle of the fourth lighting device 104E is configured to emit the direct light according to the lighting signal of the use requirement, and the liquid crystal arrangement angle of the part of the light angle adjustment element 23E located between the fourth control block 214E and the fourth control block 224E is changed to form the low beam illumination mode in accordance with the electric field change generated according to the high beam/low beam switching control signal.

Of course, the embodiments of the high beam lighting unit 1E of the present invention are not limited to the above. In specific implementation, the high beam lighting unit 1E can also be used in conjunction with the light gate unit 2C of the fourth embodiment or the light gate unit 2D of the fifth embodiment to switch between the high beam illumination mode and the low beam illumination mode.

In addition, the outer contour of the illumination area projected by the high-beam lighting device 100 of the present invention having the function of switching between low beam and high beam can be adjusted by shaping the shape of the lampshade, wherein the lampshade (not shown in the drawings of this case) is configured and disposed on the light-emitting surface of the high-beam lighting device 100 having the function of switching between low beam and high beam (for example, on the light-emitting side of the light-emitting transparent conductive element 22).

As can be seen from the above, the high-beam lighting device 100 with the function of switching between low-beam and high-beam illumination of the embodiment of the present invention guides the direct light emitted by the high-beam lighting unit 1 to be emitted in parallel with the incident direction of the light or to be emitted in a direction inclined to the incident direction of the light by changing the arrangement angle of the liquid crystal material 231 in the light angle adjustment element 23. In this way, the high-beam lighting device 100 with the function of switching between low-beam and high-beam illumination of the present invention can switch the illumination function between the high-beam illumination mode and the low-beam illumination mode, so as to reduce the volume and cost of the high-beam and low-beam lighting device of the prior art.

The above description and explanation are only the description of the preferred embodiment of the present invention. Those with common knowledge of this technology can make other modifications according to the scope of the patent application defined below and the above description, but these modifications should still be for the spirit of the present invention and within the scope of the rights of the present invention.

100: High-beam lighting equipment with the function of switching between low-beam and high-beam illumination

1: High beam lighting unit

2: Optical gate unit

21: Light-receiving and light-transmitting conductive element

22: Light-emitting and translucent conductive element

23: Light angle adjustment element

B: Control unit

Claims (10)

A high-beam lighting device with a switchable low-beam and high-beam irradiation function comprises: a high-beam lighting unit having a lighting device, wherein the high-beam lighting unit is configured to generate direct light; and a light gate unit, which is configured on a light travel path of the direct light of the high-beam lighting unit, and the light gate unit has a light-receiving and light-transmitting conductive element, a light-emitting and light-transmitting conductive element, and a light angle adjustment element, wherein the light-receiving and light-transmitting conductive element is configured on the light-incident side of the light gate unit. The light angle adjustment element receives the direct light, the light angle adjustment element is arranged between the light receiving transparent conductive element and the light emitting transparent conductive element, and the direct light travels through the light angle adjustment element of the light gate unit and emits light, the light emitting transparent conductive element is arranged on the light emitting side of the light gate unit so that the direct light leaves the light emitting transparent conductive element, the light angle adjustment element at least comprises a liquid crystal material, and the light angle adjustment element is arranged on the light receiving transparent conductive element. When the electric element and the light-emitting transparent conductive element receive the high-beam/low-beam switching control signal, the electric field applied by the light-receiving transparent conductive element and the light-emitting transparent conductive element to the light angle adjustment element changes, thereby changing the arrangement angle of the liquid crystal material and adjusting the light traveling direction of the direct light, thereby correspondingly switching between the high-beam irradiation mode and the low-beam irradiation mode. In the high-beam irradiation mode, the arrangement angle of the liquid crystal material is parallel to the direct light. In the light incident direction of the light gate unit, the direct light is made to maintain the same direction as the light incident direction after passing through the light gate unit to emit in parallel for high beam illumination, and in the low beam illumination mode, the arrangement angle of the liquid crystal material is inclined to the light incident direction of the direct light relative to the light gate unit, so that the direct light is diffused and emitted in a direction inclined to the light incident direction after passing through the light gate unit for low beam illumination. As described in claim 1, the high-beam lighting device has the function of switching between low-beam and high-beam illumination, wherein the light angle adjustment element of the light gate unit further includes a polymer material, and the polymer material is ultraviolet curing glue, acrylic glue, pressure-sensitive glue or thermosetting glue. A high-beam lighting device with a switchable function between low beam and high beam as described in claim 1, wherein the liquid crystal material of the light angle adjustment element is polymer dispersed liquid crystal (PDLC), polymer dispersed cholesterol liquid crystal (PDCLC), polymer network liquid crystal (PNLC) or multi-stable liquid crystal (MSLC). A high-beam lighting device with a switchable function between low-beam and high-beam illumination as described in claim 3, wherein the high-beam/low-beam switching control signal is intermittently applied to the light-receiving transparent conductive element and the light-emitting transparent conductive element, the high-beam/low-beam switching control signal is transmitted to the light gate unit according to the control unit, and the light angle adjustment element is configured so that the liquid crystal material, which is the multi-stable liquid crystal, changes the arrangement angle of the high-beam lighting device in the high-beam illumination mode according to the high-beam/low-beam switching control signal. A high-beam lighting device with a switchable function between low-beam and high-beam illumination as described in claim 1, wherein the light-receiving, transparent conductive element of the photogate unit has a plurality of control blocks, and according to the high-beam/low-beam switching control signal transmitted by the control unit, the light-emitting, transparent conductive element serves as a common electrode and cooperates with the plurality of control blocks to generate an electric field change to change the liquid crystal arrangement angle of a portion of the light angle adjustment element located between the plurality of control blocks and the light-emitting, transparent conductive element to form the high-beam illumination mode or the low-beam illumination mode. A high-beam lighting device with a switchable function between low-beam and high-beam illumination as described in claim 1, wherein the light-emitting transparent conductive element of the photogate unit has a plurality of control blocks, and according to the high-beam/low-beam switching control signal transmitted by the control unit, the light-receiving transparent conductive element serves as a common electrode and cooperates with the plurality of control blocks to generate an electric field change to change the liquid crystal arrangement angle of the portion of the light angle adjustment element located between the light-receiving transparent conductive element and the plurality of control blocks to become the high-beam illumination mode or the low-beam illumination mode. As described in claim 1, the high-beam lighting device with the function of switching between low-beam and high-beam illumination, wherein the light-receiving transparent conductive element of the light gate unit has a plurality of control blocks, and the light-emitting transparent conductive element has a plurality of control blocks that correspond one-to-one to the plurality of control blocks of the light-receiving transparent conductive element in position, wherein the plurality of control blocks of the light-receiving transparent conductive element and the plurality of control blocks of the light-emitting transparent conductive element generate electric field changes according to the high-beam/low-beam switching control signal transmitted by the control unit, thereby changing the liquid crystal arrangement angle of the part of the light angle adjustment element located between the plurality of control blocks of the light-receiving transparent conductive element and the plurality of control blocks of the light-emitting transparent conductive element to form the high-beam illumination mode or the low-beam illumination mode. As described in claim 1, the high-beam lighting device with the function of switching between low beam and high beam, wherein the high-beam lighting unit has a plurality of lighting devices arranged in an array, wherein the light-receiving and transparent conductive element of the photogate unit has a plurality of control blocks, and the light-emitting and transparent conductive element has a plurality of control blocks corresponding one-to-one to the plurality of control blocks of the light-receiving and transparent conductive element in position, The plurality of control blocks of the light-receiving transparent conductive element and the plurality of control blocks of the light-emitting transparent conductive element generate electric field changes according to the high-beam/low-beam switching control signal transmitted by the control unit, thereby changing the liquid crystal arrangement angle of the part of the light angle adjustment element between the plurality of control blocks of the light-receiving transparent conductive element and the plurality of control blocks of the light-emitting transparent conductive element to form the high-beam illumination mode or the low-beam illumination mode, wherein the plurality of control blocks of the light-receiving transparent conductive element and/or the plurality of control blocks of the light-emitting transparent conductive element of the light gate unit correspond one-to-one to the plurality of lighting devices of the high-beam lighting unit in terms of position, and the high-beam lighting unit is configured so that part of the lighting device emits the direct light. A high-beam lighting device having the function of switching between low beam and high beam as described in claim 1, wherein the lighting device of the high-beam lighting unit is an incandescent lamp, a low-pressure gas discharge lamp, a low-pressure sodium lamp, a cold cathode lamp, a high-intensity gas discharge lamp, a light-emitting diode, an electromagnetic induction lamp or a laser lighting lamp. The high-beam lighting device with the function of switching between low-beam and high-beam illumination as described in claim 1 further includes a control unit, wherein the control unit is configured to transmit the high-beam/low-beam switching control signal to the light gate unit and automatically adjust the high-beam/low-beam switching control signal according to: the travel speed of the vehicle on which the high-beam lighting device with the function of switching between low-beam and high-beam illumination is installed, and/or the relative distance between the vehicle and the object in front of the vehicle, so that the arrangement angle of the liquid crystal material of the light angle adjustment element is dynamically adjusted within the operating range between: the high-beam illumination mode with high illumination brightness and concentrated projection area, and the low-beam illumination mode with low illumination brightness and diffuse projection area.

Images