CN202106822U - Automobile sunshading board with function of automatically adjusting light transmittance - Google Patents
Automobile sunshading board with function of automatically adjusting light transmittance Download PDFInfo
- Publication number
- CN202106822U CN202106822U CN2011201564978U CN201120156497U CN202106822U CN 202106822 U CN202106822 U CN 202106822U CN 2011201564978 U CN2011201564978 U CN 2011201564978U CN 201120156497 U CN201120156497 U CN 201120156497U CN 202106822 U CN202106822 U CN 202106822U
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- liquid crystal
- light valve
- crystal light
- shell
- circuit
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Abstract
The utility model provides an automobile sunshading board with a function of automatically adjusting light transmittance, which is characterized by comprising fixed brackets, a shell, a circuit board added with a light sensing device, and a liquid crystal light valve board, wherein the fixed brackets comprise a left fixed bracket and a right fixed bracket, the left fixed bracket is arranged at the left upper side of the shell, the right fixed bracket is arranged at the right upper side of the shell, the circuit board added with the light sensing device is arranged in the shell, the liquid crystal light valve board is clamped in an installing sew of the shell, and a liquid crystal light valve drives a driving interface of a circuit to be connected with a circuit board of the light sensing device. The automobile sunshading board has the advantages that the liquid crystal light valve is used as a light transmitting device, and the light sensing device can be used for automatically adjusting the light transmittance, so that the stimulation of outside light on a driver can be reduced, the view of the driver can be effectively improved, the manual operation intensity of the driver can be reduced, and the driving safety can be improved.
Description
Technical field
The utility model relates to a kind of automotive sunshade panel, utilize the light transmittance of liquid crystal light valve automatically regulating automotive sunshade panel, belong to vehicle electronics accessory technical field with light transmittance automatically regulating function.
Background technology
Automotive sunshade panel is used to block the light of directive chaufeur, but traditional complete light tight shielding mode causes image to the visual field of chaufeur, is unfavorable for driving safety.
Summary of the invention
A kind of automotive sunshade panel that the utility model proposes with light transmittance automatically regulating function; Its objective is and utilize liquid crystal light valve as the device that changes light transmittance; The voltage that is added on the liquid crystal light valve through change reaches the light transmittance that changes light valve; Utilize the real-time light intensity of sensor devices perception again, change the driving voltage that liquid crystal light valve drives automatically, obtain the effect of automatically regulating automotive sunshade panel light transmittance.
The technical solution of the utility model: the structure of automotive sunshade panel comprises circuit card, the liquid crystal light valve plate of fixed support, shell, subsidiary sensor devices; Wherein fixed support divides left fixed support, right fixed support; Left side fixed support is in the upper left side of shell, and right fixed support is in the upper right side of shell, and the circuit card of subsidiary sensor devices is packed in the shell; The liquid crystal light valve integrated circuit board is gone into the installation seam of shell, and the driving interface of liquid crystal light valve driving circuit is connected with the circuit card of sensor devices.
The advantage of the utility model: use liquid crystal light valve as light penetrating device, adopt sensor devices automatically regulating light transmittance, reduce of the stimulation of extraneous light, effectively improve driver's seat, reduce the manual manipulation strength of chaufeur, improve drive safety to chaufeur.
Description of drawings
Accompanying drawing 1 is the structural representation of the automotive sunshade panel of band light transmittance automatically regulating function.
Accompanying drawing 2 is sun shield light transmittance automatically regulating control circuit block diagrams.
Among the figure 1 is left fixed support, the 2nd, shell, the 3rd, the circuit card, the 4th of subsidiary sensor devices, right fixed support, the 5th, liquid crystal light valve plate.
The specific embodiment
Contrast accompanying drawing 1; The structure of automotive sunshade panel comprises circuit card 3, the liquid crystal light valve plate 5 of fixed support, shell 2, subsidiary sensor devices, and wherein fixed support divides left fixed support 1, right fixed support 4, and left fixed support 1 is in the upper left side of shell 2; Right fixed support 4 is in the upper right side of shell 2; The circuit card of subsidiary sensor devices is packed in the shell 2, and the liquid crystal light valve integrated circuit board is gone into the installation seam of shell 2, and the driving interface of liquid crystal light valve driving circuit is connected with the circuit card of sensor devices 3.
Support bracket fastened effect is that this sun shield is fixed in automotive interior.
Sensor devices adopts photodiode; The same with general-purpose diode have a PN junction; Difference is a transparent window to be arranged to receive irradiate light on the shell of photodiode; Realize opto-electronic conversion, different light produces different photocurrents, delivers to the digital signal that analog to digital conversion circuit is converted into the identification of monolithic function.
Liquid crystal light valve adopts TN type liquid crystal, and box is thick to be 6um, before and after liquid crystal cell, has added partially and the analyzing polaroid, utilizes the interior liquid crystal molecule distortion angle of ac drive voltage control liquid crystal cell to change the transmitance of light.
Contrast accompanying drawing 2; Sun shield light transmittance automatically regulating control circuit is contained in the circuit card 3 of subsidiary sensor devices; It comprises sensor devices (photodiode), A/D converter, micro controller system, liquid crystal light valve driving circuit, liquid crystal light valve, power circuit; Wherein the signal input part of the signal output part of sensor devices and A/D converter joins; The signal output part of A/D converter and the signal input part of micro controller system join; The optical drive signal output part of micro controller system and the signal input part of liquid crystal light valve driving circuit join, and the signal output part of liquid crystal light valve driving circuit and the signal input part of liquid crystal light valve join, and the power input of the power output end of power circuit and the power input of A/D converter, micro controller system, the power input of liquid crystal light valve driving circuit join.
Described sensor devices adopts photodiode; The same with general-purpose diode have a PN junction; Difference is a transparent window to be arranged to receive irradiate light on the shell of photodiode; Realize opto-electronic conversion, different light produces different photocurrents, delivers to the digital signal that analog to digital conversion circuit is converted into the identification of monolithic function.
Micro controller system adopts 8 micro controller systems, gathers the light intensity digital signal that photodiode is transformed, according to built-in driving voltage---and extraneous light intensity table calculates cooresponding drive voltage signal.This signal is exported through the IO of micro controller system mouth.
The liquid crystal light valve driving circuit is to be used for producing the ac drive voltage that liquid crystal light valve is used, and electric voltage frequency is 60 hertz, and available voltage is that 1V is to 3V.
Behind the shelves glass inside, along with the variation of extraneous light, the light sensitive diode above the sun shield produces different photocurrents before sun shield is fixed in automobile; Light is strong more; Photocurrent is big more, and the drive control signal that micro controller system calculates back output is strong more, and the voltage that the liquid crystal light valve driving circuit produces is high more; The light transmittance of liquid crystal light valve is low more, makes the eyes of chaufeur be unlikely to receive the irradiation of high light; Otherwise, light more a little less than, photocurrent is more little, the drive control signal that micro controller system calculates back output more a little less than, the voltage that the liquid crystal light valve driving circuit produces is low more, the light transmittance of liquid crystal light valve is high more, makes the eye sight line of chaufeur unaffected.
Claims (2)
1. be with the automotive sunshade panel of light transmittance automatically regulating function; It is characterized in that comprising circuit card, the liquid crystal light valve plate of fixed support, shell, subsidiary sensor devices, wherein fixed support divides left fixed support, right fixed support, and left fixed support is in the upper left side of shell; Right fixed support is in the upper right side of shell; The circuit card of subsidiary sensor devices is packed in the shell, and the liquid crystal light valve integrated circuit board is gone into the installation seam of shell, and the driving interface of liquid crystal light valve driving circuit is connected with the circuit card of sensor devices.
2. the automotive sunshade panel of band light transmittance automatically regulating function according to claim 1; It is characterized in that the sun shield light transmittance automatically regulating control circuit on the circuit card of subsidiary sensor devices comprises sensor devices, A/D converter, micro controller system, liquid crystal light valve driving circuit, liquid crystal light valve, power circuit; Wherein the signal input part of the signal output part of sensor devices and A/D converter joins; The signal output part of A/D converter and the signal input part of micro controller system join; The optical drive signal output part of micro controller system and the signal input part of liquid crystal light valve driving circuit join; The signal output part of liquid crystal light valve driving circuit and the signal input part of liquid crystal light valve join, and the power input of the power output end of power circuit and the power input of A/D converter, micro controller system, the power input of liquid crystal light valve driving circuit join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201564978U CN202106822U (en) | 2011-05-17 | 2011-05-17 | Automobile sunshading board with function of automatically adjusting light transmittance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201564978U CN202106822U (en) | 2011-05-17 | 2011-05-17 | Automobile sunshading board with function of automatically adjusting light transmittance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202106822U true CN202106822U (en) | 2012-01-11 |
Family
ID=45432268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201564978U Expired - Lifetime CN202106822U (en) | 2011-05-17 | 2011-05-17 | Automobile sunshading board with function of automatically adjusting light transmittance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202106822U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434452A (en) * | 2013-09-09 | 2013-12-11 | 南京华日液晶显示技术有限公司 | Automobile automatic anti-dazzling rearview mirror manufactured by using dye liquid crystal light valve and manufacturing method thereof |
| CN103991366A (en) * | 2013-02-17 | 2014-08-20 | 法国圣戈班玻璃公司 | Sun shading device, vehicle and glass sun shading method |
| CN104334382A (en) * | 2012-03-26 | 2015-02-04 | 法雷奥照明公司 | Device for nighttime motor vehicle driving assistance |
| CN113311626A (en) * | 2021-05-07 | 2021-08-27 | 兴科迪科技（泰州）有限公司 | Intelligent sun shield based on vehicle |
-
2011
- 2011-05-17 CN CN2011201564978U patent/CN202106822U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104334382A (en) * | 2012-03-26 | 2015-02-04 | 法雷奥照明公司 | Device for nighttime motor vehicle driving assistance |
| CN104334382B (en) * | 2012-03-26 | 2016-08-31 | 法雷奥照明公司 | Equipment for vehicle driving auxiliary at night |
| CN103991366A (en) * | 2013-02-17 | 2014-08-20 | 法国圣戈班玻璃公司 | Sun shading device, vehicle and glass sun shading method |
| CN103434452A (en) * | 2013-09-09 | 2013-12-11 | 南京华日液晶显示技术有限公司 | Automobile automatic anti-dazzling rearview mirror manufactured by using dye liquid crystal light valve and manufacturing method thereof |
| CN113311626A (en) * | 2021-05-07 | 2021-08-27 | 兴科迪科技（泰州）有限公司 | Intelligent sun shield based on vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120111 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |