WO2007062581A1

WO2007062581A1 - Visor for vehicles

Info

Publication number: WO2007062581A1
Application number: PCT/CN2006/003187
Authority: WO
Inventors: Limin Zhou
Original assignee: Limin Zhou
Priority date: 2005-11-30
Filing date: 2006-11-27
Publication date: 2007-06-07
Also published as: CN100594401C; CN1979270A

Abstract

A visor for vehicles includes a supporting frame, a transmissive liquid crystal valve which is provided on the supporting frame, and an electrical controller connected to the liquid crystal valve, wherein a rotatable axis and a fixed bar are provided on the supporting frame. The liquid crystal valve comprises an upper and a lower glass substrates, an upper and a lower polarisers provided on the upper and lower substrates, an upper and a lower conductive layers provided on the inner surfaces of the substrates, alignment layers provided on the upper and lower conductive layers, and liquid crystal material provided between the upper and lower substrates. The transmissive liquid crystal valve is sealed into a cell structure, and metal lines connected to the electrical controller are provided in the glass substrates.

Description

Automobile visor technology field

The invention belongs to the field of automobile accessories, and particularly relates to a novel automobile visor for driving a driver to drive a vehicle on a vehicle such as a vehicle. Background technique

During the driving process, the driver often drives in the sun, and the reflection, refraction and illumination of the sun stimulate the driver's eyes through the front window, which affects the safety of driving. To this end, the front windshield of the vehicle is often provided with a visor to block sunlight to reduce the adverse effects of sunlight on the driver. The commercially available visors are all opaque, non-perspective, plate-like structures, as shown in Figure 1.

This type of visor blocks the sun from the top of the front window during use, but it also obscures the driver's view, especially for taller drivers. When driving with a visor, observe The road ahead can only be carried out from under the visor, which leads to long-term passive depression of the driver's head and neck, which is easy to cause neck disease and affect the comfort of driving. In addition, with the popularity of automobiles, more and more myopic drivers are driving in the sun, because they have worn myopia glasses, which makes it impossible or inconvenient to wear sunglasses, which causes trouble in driving in the sun. Myopia drivers are difficult to understand.

There have been attempts to solve the above problems using liquid crystal devices. However, it is well known that liquid crystal devices are used at a relatively narrow temperature and have a relatively high temperature effect, which is a major drawback of liquid crystal devices. 'When the temperature is too high, the liquid crystal state will disappear and cannot be displayed. When the temperature is too low, the viscosity of the liquid crystal will increase, the threshold will rise, and the response speed will be significantly slower until it crystallizes. Since any substance consists of molecules or regularly arranged ionic units, if the basic unit of these constituent materials is composed of spherical or center-of-gravity symmetrical elements, then the center of gravity of the basic unit, whether it is a change in temperature or other external conditions The positional distribution will not produce directional changes. 'And this basic unit is non-spherical, such as liquid

Confirmation When the crystal is in the form of a rod, it is possible to order the regularity and the directionality of the position distribution of the center of gravity within a certain temperature range, thereby exhibiting a liquid crystal state. Therefore, all liquid crystal devices must be stored and operated within a certain temperature range. Any temperature exceeding this temperature range will cause the liquid crystal material in the device to lose its liquid crystal state. Lightly, the device will not work temporarily, and the device will be damaged. If the temperature is too high, the liquid crystal state disappears and becomes liquid, and the display surface is black, which cannot work. If the temperature is too low, the liquid crystal state disappears and becomes a crystal. At this time, the alignment layer may be destroyed during the formation of the crystal, resulting in permanent Sexual damage. The main parameters of the liquid crystal device are temperature range, response characteristics, driving characteristics, viewing angle, reliability, and device processing technology, box thickness and orientation process. Among them, the liquid crystal temperature range is the main parameter affecting the liquid crystal price. The higher the operating temperature range, the higher the price. In the process of using the vehicle, there is a higher temperature range requirement. Due to the contrast between the north and south and the day and night climate change, the liquid crystal device for the vehicle must be required to be a wide temperature liquid crystal, and the working temperature is -20 ° C to +70 ° C, and the storage temperature is - 40 ° C ~ +80 Ό, otherwise, the use of low-cost ambient temperature liquid crystal devices, the corresponding products must not withstand the test of the market, resulting in the summer hot quarter, the LCD panel black; winter cold quarter, the LCD panel 'reaction speed is very slow . All of this is a lesson learned by the inventors after many trials and consumption of a lot of money. In addition, the basic structure of the liquid crystal device is a thin box made of two glass substrates, commonly known as liquid crystal glass, but the classification of the liquid crystal glass is extremely diverse, and it is varied and varied in function, structure, working mode or display method. First, classification from the liquid crystal electro-optic (thermal light) effect can be divided into twisted nematic (ΤΝ), guest-effect type (GH), phase-change (PC), electronically controlled birefringence (ECB), ferroelectric effect type. (FLC), super-twist effect type (STN) polymer dispersion type (PDLC), dynamic scattering type (DS), laser writing type, cholesteric thermochromic type, electrothermal effect type, etc., classified from display state It is reflective, semi-transmissive, and transmissive. It is classified from liquid crystal glass parts, and has a single polarizing plate type, a two-plate polarizing type, and a non-polarizing plate type. Classified from the display effect, there are transparent-white turbidity type, transmittance change caused by contrast change type, black-and-white contrast type, and scattering state transparent Type, transparent, opaque, etc. To this end, how to choose the appropriate liquid crystal glass, so that the driver's vision is comfortable, and in line with the driving environment, at the same time, the product cost-effective, is another key point of the present invention.

At the same time, it is considered that during driving, the driver wants to know the driving information such as temperature, humidity, time, driving direction, etc., and needs to look down at the dashboard, which also affects the safety of driving and inconvenience to the driver, such as You can use the light of the horizontal line of sight to understand the driving information while driving, and it will increase safety and comfort.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a novel automobile visor that can block sunlight, prevent light from being glare, and does not affect the driver's front view and improve driving safety and comfort.

The present invention is achieved by the following technical solutions: a vehicle visor that does not affect the driver's front view of the vehicle, including a support frame for mounting on a vehicle, a transmissive liquid crystal louver disposed on the support frame, and a transmissive type The electric light controller connected to the liquid crystal light valve, the transmissive liquid crystal light valve is connected with the support frame and arranged in the front position of the driver's vision, and the support frame is provided with a rotating shaft and a fixed cross bar, which can control the support frame to stay at any viewing angle, wherein The transmissive liquid crystal light valve is composed of a multi-layer structure, wherein two upper and lower polarizing plates are attached to the upper and lower layers of the glass base layer, and two inner and lower conductive layers are disposed on the inner surface of the glass base layer, and two upper and lower conductive layers are attached to the upper and lower layers. The layer is oriented with a wide temperature liquid crystal molecule interposed therebetween; the transmissive liquid crystal light valve is surrounded by a liquid crystal box-like structure, and the glass substrate of the liquid crystal cell is provided with a metal pin line connected to the electric controller The electric controller control mode may be a light control, a remote control or a voice control module; the electric controller is installed on the support Within the frame.

The transmissive liquid crystal light valve can be partially provided with a controllable liquid crystal display window for displaying traffic information such as temperature, humidity, time, and traveling direction. The liquid crystal display and the display content drive The moving module is connected, and the display content driving module is connected to the electric controller.

The electric controller is connected to a vehicle power source or a battery box, and the electric controller can preset the initial chromaticity of the plurality of liquid crystal light valves to meet the physiological needs of different people. The car power supply or battery case has an operating voltage of 3 to 12V.

The rotating shaft can be provided with a car power cable 1 line, which is connected to the vehicle power supply.

The optical controller of the light control mode is composed of a photoresistor or a photosensitive tube or a photocell and a voltage stabilizing unit, an alternating voltage generating unit, a bright signal sensing comparing unit, and a light transmitting voltage adjusting unit.

The electric controller of the remote control mode is composed of a signal transmitting unit, a signal identifying receiving unit, a voltage stabilizing unit, an alternating voltage generating unit, and a light transmitting voltage adjusting unit, and the signal transmitting unit and the signal identifying receiving unit may be configured to be wirelessly controlled or Far infrared control mode.

The electrical controller of the voice control mode is composed of a voltage stabilization unit, a voice control signal receiving and identifying unit, an AC voltage generating unit, and a light transmitting voltage adjusting unit.

The automobile support frame may adopt a mode in which the transmissive liquid crystal light valve is fixed (see Fig. 4), or a mode in which the transmissive liquid crystal light valve can be moved up and down (see Fig. 5).

The upper and lower polarizing plates of the transmissive liquid crystal light valve are wear-resistant and ultraviolet-resistant polarizing plates, and the transmissive liquid crystal light valves are arranged in a rectangular shape, and the corners are arc-shaped, because the temperature inside the automobile is high, among which The wide temperature type liquid crystal uses TN type liquid crystal, and its working temperature is - 20 ° C ~ 7 {TC, the storage temperature is - 40 ° C ~ 80 ° C. .

When using the automobile visor of the present invention, the driver can not only achieve strong illumination of the eyes from the sunlight, but also maximize the driving vision. At the same time, according to the illumination intensity of the sunlight, the light control, remote control, and voice control modes can be adopted. The electric controller adjusts the light intensity entering the driver's eyes to give the driver a comfortable eye. In particular, it solves the problem that the driver of myopia is inconvenient to wear sunglasses because of the inconvenience of wearing sunglasses. At the same time, the high driver does not let the head and neck be forced to push down when driving in the sun, improving driving comfort. Long-term use of the automotive visor of the present invention because of the transmissive liquid The crystal light valve filters the harmful light of ultraviolet light, stroboscopic light and the like to the driver's visual light pollution, which helps to improve the vision health of the driver's eyes. In addition, during the driving process, if the driver does not need to look down at the dashboard to understand the driving information, which affects the safety of driving, he only needs to use the residual light to scan the liquid crystal display window on the horizontal line of driving, so that he can understand while driving. Information such as direction, humidity, temperature, caller ID, etc., makes driving safer and more comfortable.

The present invention will be further described below in conjunction with the drawings and specific embodiments, but the implementation of the present invention is not limited to the following. DRAWINGS

1 is a schematic structural view of a conventional visor.

2 is a schematic structural view of a transmissive liquid crystal light valve.

Figure 3 is a plan view of a rectangular liquid crystal cell. ·

Figure 4 is a schematic view of the structure of the fixed frame.

Figure 5 is a schematic view showing the structure of the upper and lower movable frames.

Fig. 6 is a schematic structural view of a light control type automobile visor.

Fig. 7 is a schematic structural view of a remote control type vehicle visor.

Fig. 8 is a schematic structural view of a sound control type automobile visor.

Figure 9 is a circuit diagram of a light-controlled automotive visor.

Figure 10 is a schematic diagram of the principle of a light control type vehicle visor.

Figure 11 is a circuit diagram of a remote control type vehicle visor.

Figure 12 is a schematic diagram of the principle of a remote control type vehicle visor.

Figure 13 is a circuit diagram of a voice-activated automotive visor.

Figure 14 is a schematic diagram of the principle of a voice-activated automotive visor. detailed description As shown in FIG. 2 and FIG. 3, a vehicle visor that does not affect the driver's front view of the vehicle, includes a support frame for mounting on the automobile, a transmissive liquid crystal light valve disposed on the support frame, and a transmissive liquid crystal. An electric controller connected to the light valve, the transmissive liquid crystal light valve is connected to the support frame and disposed in front of the driver's vision. The support frame 9 is provided with a rotating shaft 6 and a fixed crossbar 7, which can control the support frame to stay at any viewing angle. The transmissive liquid crystal light valve 8 is composed of a multi-layer structure, wherein the upper and lower polarizing plates 1A and IB are attached to the upper and lower glass base layers 2A and 2B, and the inner and outer surfaces of the glass base layer are provided with two upper and lower conductive layers 3A. 3B, two layers of alignment layers 4A, 4B are attached to the upper and lower layers of the conductive layer, and the alignment layer is filled with a wide temperature type liquid crystal molecule 5; the transmissive liquid crystal light valve 8 is surrounded by a sealed liquid crystal cell The glass structure of the liquid crystal cell is provided with a metal pin line 14 connected to the electric controller, and the electric controller can be controlled by a light control, a remote control or a voice control mode, and the electric controller is installed in the 9 the support frame.

Example 2

A light-controlled automobile visor that does not affect the driver's front view of the vehicle, first produces a transmissive liquid crystal light valve 8: vapor-deposit a layer of In ₂ 0 ₃ (indium oxide) on the inner surfaces of the two-layer glass substrates 2A, 2B or Sn0 ₂ (tin oxide) conductive layers 3A, 3B, processed by photolithography to form a conductive pattern, and then coated with an alignment layer film 4A, 4B for orientation treatment, the two glass substrates are relatively set together, and the distance between them is 6 ~7 μ πι, surrounded by epoxy glue 15 , leaving a small 'hole 16 on the lower side of the sealing edge, the small hole is the liquid crystal injection port, the liquid crystal molecules are ΤΝ type wide temperature liquid crystal 5, its working temperature At - 20 ° C ~ 70 ° C, the storage temperature is - 4 (TC ~ 80 ° C, liquid crystal molecules are injected into the liquid crystal cell through the port under vacuum conditions, and then the small holes are sealed with resin, the liquid crystal cell is up and down The surface is then coated with a layer of wear-resistant, UV-resistant polarizing film 1Α, ΙΒο

Then, the light-control type automobile visor is produced: as shown in FIG. 6, FIG. 9, and FIG. 10, the battery case 18 is used as the power source of the device, and after the switch K1 is switched on, the light-emitting diode D1 is illuminated, and the resistor R1 is illuminated. Diode D1 acts as a current limiting and guarding function, and is composed of NAND gate integrated circuits U1 and U2. An oscillator, which outputs an AC voltage of a desired frequency and amplitude of the transmissive liquid crystal light valve 8, wherein the resistor R2 is an input protection resistor of U1, the resistor R3 and the capacitor C1 determine the frequency of the oscillation, and the AC signal is outputted by the U2. The gate integrated circuit U3 is regulated to expand, and when the photoresistor 17 is irradiated with light, the resistance decreases and the output current increases, so that the voltage of the liquid crystal light valve 8 also increases, so that the color tone of the liquid crystal light valve 8 becomes dark. Wherein, the resistor R4 slightly adjusts the amplitude of the output of the NAND gate integrated circuit U3, and also adjusts the sensitivity of the photoresistor 17, and the AC voltage is further expanded and reversed by the NAND gate integrated circuit U4 and sent to resistors of different resistance values. R5, R6, R7, R8, after selecting the resistance of different resistance values through the multi-section K2, the current and voltage output to the liquid crystal light valve 8 are divided into different grades to adapt to the physiological requirements of different people. The temperature of the car is measured by the temperature detecting module M1 at any time. The date and time module M2 provides the local date and time. The electronic compass module M3 measures the direction of the vehicle at any time. The signals provided by these modules are sent to the liquid crystal display through the liquid crystal driving module M4. The window screen 10 is convenient for the driver to use. The control circuit of the above electric controller can be controlled by a control panel 11 provided on the support frame 9, and the transmissive liquid crystal light valve 8 is mounted on the support frame to be movable up and down.

Example 3: '

A remote-type automotive visor that does not affect the driver's front view of the vehicle is driven. The transmissive liquid crystal light valve 8 is first fabricated by the method described in the second embodiment. Then make a remote-controlled car visor: As shown in Figure 7, Figure 11, Figure 12, the 12V voltage of the vehicle is connected to the anode of the rectifier diode D1. The function of the rectifier diode D1 is to prevent the circuit from being damaged by the positive and negative terminals of the vehicle battery. The trimming resistor R1 slightly adjusts the bias current of the transistor Q1. The capacitor C1 is used to eliminate the high-frequency interference generated by the vehicle generator. The output voltage and current of the transistors Q1 and Q2 are stabilized by the IC1 voltage regulator integrated circuit. The voltage required for the latter stage. When the wireless receiving module or the infrared receiving module M1 receives the signal, the control signal is output to the NAND gate integrated circuit, so that the oscillating circuit composed of U1 and U2 outputs the AC voltage of the desired frequency and amplitude of the transmissive liquid crystal light valve 8, wherein the resistor R4 is the input protection resistor of U1, and resistor R5 and capacitor C2 determine the oscillation frequency of the circuit. After the output of the NAND gate integrated circuit U2 is expanded by the NAND gate integrated circuit U3, the trimming resistor R6 slightly adjusts the amplitude of the U3 output, and the AC voltage is further extended by the NAND gate integrated circuit U4 and sent to different Resistor resistors R7, R8, 'R9, R10, after selecting the resistance of different resistance values through the multi-section switch K, the current and voltage output to the liquid crystal light valve 8 are divided into different grades to meet the physiological requirements of different people. . The wireless receiving device or the infrared receiving device 12 of the above electric controller may be mounted on the support frame 9, and the wireless control transmitting device or the infrared control transmitting device may be mounted on the driving steering wheel, and the transmissive liquid crystal light valve 8 is fixedly mounted on the supporting frame. .

Example 4:

A voice-activated automobile visor that does not affect the driver's front view of the vehicle is driven, and the transmissive liquid crystal light valve 8 is first manufactured by the method described in the second embodiment. Then make the voice-activated car visor: As shown in Figure 8, Figure 13, Figure 14, the 12V voltage of the vehicle is connected to the anode of the rectifier diode D1. The function of the rectifier diode D1 is to prevent the circuit damage caused by the reverse connection of the positive and negative terminals of the vehicle battery. The bias current of the transistor Q1 is slightly adjusted by the trimming resistor R1. The capacitor C1 is used to eliminate the high frequency interference generated by the vehicle generator. The output voltage and current of the transistors Ql and Q2 are stabilized by the IC1 voltage regulator integrated circuit. The voltage required to reach the latter stage. When the pickup in the voice control receiving module M1 receives the signal, the control signal is output to the NAND gate integrated circuit, so that the oscillating circuit composed of U1 and U2 outputs the AC voltage of the desired frequency and amplitude of the transmissive liquid crystal light valve 8, wherein the resistor R4 The input protection resistor of U1, the resistor R5 and the capacitor C2 determine the oscillation frequency of the circuit. The AC voltage is expanded by the NAND gate integrated circuit U3 after being outputted by the non-gate integrated circuit U2, wherein the amplitude of the trimming resistor to the U3 output For minor adjustment, the AC voltage is further expanded and reversed by the NAND gate integrated circuit U4 and sent to resistors R7, R8, R9, and R10 of different resistance values. After selecting the resistances of different resistance values through the multi-section switch K, the output voltage is output to the liquid crystal. The current and voltage of the light valve LCD are divided into different grades to suit the physiological requirements of different people. The pickup 13 of the above electric controller can be mounted on the support frame 9 to receive commands from the driver such as deepening, lightening, deeper, and the like.

Claims

Rights request

1. A vehicle visor that does not affect the driver's front view of driving, and is characterized in that it comprises a support frame (9) for mounting on a vehicle, a transmissive liquid crystal louver (8) disposed on the support frame, and An electric controller connected to the transmissive liquid crystal light valve, the transmissive liquid crystal light valve is connected to the support frame and disposed in front of the driver's vision, and the support frame has a rotating shaft (6) and a fixed crossbar (7), which can be controlled. The support frame stays at any viewing angle; the transmissive liquid crystal light valve is composed of a multi-layer structure, wherein two upper and lower polarizing plates (1A, IB) are attached to the upper and lower layers of the glass base layer (2A, 2B), and the inner surface of the glass base layer is provided. There are two upper and lower conductive layers (3A, 3B), and two layers of oriented layers (4A, 4B) are attached to the upper and lower conductive layers, and the oriented layer is infused with wide-temperature liquid crystal molecules.

(5); the transmissive liquid crystal light valve is surrounded by a liquid crystal box-like structure, and the glass base layer of the liquid crystal cell is provided with a metal pin wire (14) connected to the electric controller.

2. The vehicle visor according to claim 1, wherein the transmissive liquid crystal light valve (8) is partially provided with a controllable liquid crystal display window screen.

(10), the liquid crystal display window screen is connected to the display content driving module, and the display content driving module is connected to the electric controller.

3. The vehicle visor according to claim 1, wherein the control mode of the electric controller adopts a light control, a remote control or a voice control mode, and the electric controller can be Installed in the support frame.

4. A vehicle visor according to claim 1, wherein the transmissive liquid crystal light valve is composed of a thick structure.

5. A vehicle visor according to claim 1 or 2, which does not affect the driver's front view of the vehicle, wherein the electric controller is connected to the vehicle power source or the battery case (18), and the electric controller is pre- The initial color of the recommended liquid crystal light valve is set, and the operating voltage of the car power source or the battery case is 3 to 12V.

6. A vehicle visor according to claim 3, which does not affect the driver's front view of the vehicle, characterized in that the rotating shaft (6) is provided with a lead of an automobile power source.

7. The vehicle visor according to claim 1, wherein the electric controller of the light control mode is composed of a photoresistor or a photosensitive tube or a photocell (17) and a voltage stabilizing unit, The AC voltage generating unit, the bright signal sensing comparison unit, and the light transmission voltage adjusting unit are composed.

8. The vehicle visor according to claim 1, wherein the electric controller of the remote control mode comprises a signal transmitting unit, a signal identifying receiving unit, a voltage stabilizing unit, and an alternating voltage. The generating unit, the light transmitting unit and the voltage adjusting unit are configured, and the signal transmitting unit and the signal identifying receiving unit are in a wireless control or a far infrared control mode.

9. The vehicle visor according to claim 1, wherein the electrical controller of the voice control mode comprises a voltage stabilization unit, a voice control signal receiving and identifying unit, an AC voltage generating unit, and a light transmission. The voltage regulating unit is composed.

10. A vehicle visor according to claim 1, 2, 5, 6 or 7 which does not affect the driver's front view of the vehicle, characterized by a transmissive liquid crystal light valve disposed on the support frame (9)

(8) A fixed mode or a mode that can be moved up and down.

11. A vehicle visor according to claim 1, 2, 5, 6 or 7 which does not affect the driver's front view of the vehicle, and is characterized by a top and bottom polarizing plate of the transmissive liquid crystal light valve (8) (1A) , IB) is a wear-resistant, UV-resistant polarizer.

12. A vehicle visor according to claim 1, 2, 5, 6 or 7 which does not affect the driver's front view of the vehicle, wherein the wide temperature type liquid crystal (5) is selected from a TN type liquid crystal, and its operation The temperature is - 20 ° (: ~ 70 ° C, storage temperature is - 40 ° C ~ 80 ° C.

13. A vehicle visor according to claim 1, 2, 5, 6 or 7 which does not affect the driver's forward view of the vehicle, wherein the transmissive liquid crystal light valve (8) is rectangular and has a corner. Arc shape.