CN2203241Y

CN2203241Y - Multipurpose electronic rear-view arrangement for car

Info

Publication number: CN2203241Y
Application number: CN 94209517
Authority: CN
Inventors: 张博庭
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-04
Filing date: 1994-05-04
Publication date: 1995-07-12
Anticipated expiration: 2004-05-04

Abstract

The utility model relates to an electronic rear view arrangement for vehicles, which is composed of a dual-purpose TV which is arranged on the front part of the vehicle for receiving and monitoring, a CCD picture imaging sensor, and a set of video switch circuits. The utility model can be used as one vehicle TV receiver for receiving local television programs and can be converted to a set of electronic rear view devices as required for solving the problem that the vehicle rear view mirror has larger observation dead angles caused by the limitation of the size of the vehicle rear window under the condition of no obstruction inside the vehicle.

Description

Multipurpose electronic rear-view arrangement for car

The utility model relates to a kind of vehicle-borne electronics rear-view mirror device, and it promptly can be used as an in-car TV machine, is used to watch local telecast, can be converted into a cover electronics rear-view mirror device simultaneously again under the situation of needs.

Automobile is the product of human civilization, has especially entered since the cyberage, and a variety of advanced persons' scientific and technological achievement all constantly is used on the automobile.As have personal vehicle system, mobile communcations system, the high-fidelity audiovisual system that embody microelectronic technique all appear on the modern automobile in succession.Yet the rear-view mirror device for automobile is not but made any great improvement all the time.

Domestic and international all kinds of automobile, usually the operator's compartment upside or outside window side optical mirror is housed, observe as backsight.But this rear-view mirror device is meet requirements still in the ordinary course of things, but passenger vehicle seat Manchu, when lorry was filled goods, backsight generally all will be affected, and has increased the difficulty that chaufeur is observed car rear situation.Especially full size vehicle such as este wagon, lorry is in when reversing, because light deflector can accurately not observed in-plant situation behind the car, may cause the reversing error.Gently then broken car body, heavy then cause grave accidents such as injures and deaths, overturning.

The purpose of this utility model provides a kind of special electronics rear-view mirror device, by the photoelectric image system, solves the backsight of present various vehicular optical back mirrors, the scope problem of smaller of side-looking, eliminates the backsight dead angle.

According to the continuous development of Eltec, along with spreading all over of vision receiver, in-car TV also can become one of indispensable configuration of following automobile.Only under the situation of fully loaded or reversing, can not satisfy the characteristics that the chaufeur backsight is observed needs according to present some automotive rear-view system.Therefore, the utility model device is that suggestion increases on automobile on the basis that does not change former light deflector and adorns a cover multipurpose electronic rear-view mirror device.Still can utilize original back mirror during general the driving, can start this cover electronics rear-view mirror device when needed and improve the backsight effect.

The applied telltale of the utility model device adopts takes into custody dual-purpose vision receiver, and is furnished with corresponding in-car TV antenna, can watch local telecast effectively.Power supply is supplied with by the storage battery on the car.The find a view image pick-up device of usefulness of backsight is made of optical lens, imageing sensor and auxiliary circuit spare.For improving the visiblity under the particular surroundingss such as night and big greasy weather, also can adopt the infrared pick-up device.The structure of this device and the detailed description of principle are referring to special case.Effect of the present utility model not only is the influence of obstacle negotiation thing to backsight, and can enlarge the backsight angle, remedies the weakness that former some vehicle mirrors visual angle is little, the in-plant object in the positive back lower place of car observed difficulty.The electronics rear-view mirror device can change and enlarge the backsight angle by the position of conversion image pick-up device and the angle of adjustment image pick-up device.By of the restriction of the visible former back mirror of accompanying drawing, even in car, under the complete clog-free situation, also will have bigger backsight to observe the dead angle owing to car rear window size.And, can observe that in-plant situation is most important behind the car for needs reversings chaufeur.If adopt the electro-photographic backsight device then can remedy this defective fully.The method of the angle by adjusting image pick-up device can reduce so that eliminate the backsight dead angle fully, thereby can improve the safety of reversing greatly.

Electronics rear-view mirror device to different vehicles can adopt different arrangements respectively:

To the travelling vehicle, should be arranged in behind the car in the glass port, be convenient to like this install.For the truck class, for the back that prevents to freight influences backsight, the backsight image pick-up device can be installed in the rear taillight place, and take to keep a public place clean accordingly, dust prevention.Also image pick-up device can be installed in the bicycle shed upper back to special box car.To the vehicle of specific (special) requirements is arranged, can adopt particular design to reach backsight effect preferably.

Fig. 1 is the scheme drawing of a box-body truck back-sight visual system, and A is a rearview mirror among the figure, and B is an image pick-up device.When with the light deflector backsight and since compartment board stop that the dead angle of its vertical direction backsight is that AA ' line segment is with the lower part.If adopt image pick-up device B, the dead angle of its backsight be BB ' line segment with the lower part, and can control, so that eliminate the backsight dead angle by adjusting position, angle and the image pick-up device camera lens focus of shooting image pick-up device B.The monitoring device of electronics rear-view mirror device can be contained near the position of light deflector A, or the gauge panel top.B is the installation site of image pick-up device.Two parts constitute multipurpose automobile electronics rear-view mirror device jointly by the video line connection.

Fig. 2 is the scheme drawing of an este wagon rear-view mirror device, (a) is birds-eye view, (b) is lateral plan.Because car rear window dimensional restriction, the backsight dead angle of its rearview mirror A are part beyond the AA ' section, as Fig. 1, adopt the backsight dead angle BB ' of image pick-up device B to adjust as required, thereby can improve the effect of backsight.In addition, because the este wagon compartment is longer, rear window is away from rearview mirror, so its visual angle also is subjected to bigger restriction in the horizontal direction.Use the electronics rear-view mirror device, can enlarge horizontal backsight angle by adopting wide-angle lens, shown in Fig. 2 (a).

Fig. 3 is the structural representation of a kind of special case of the utility model, and Fig. 3 (a) is a monitoring device part scheme drawing, and Fig. 3 (b) is an image pick-up device part-structure scheme drawing.(1) is optical lens among the figure, and what this special case adopted is the wide-angle lens of 3.5mm, f=1.8; (2) be lens mount, play the interconnect function of camera lens and ccd image sensor, and can adjust, guarantee that the camera lens focus converges on the ccd sensor; (3) be CCD and auxiliary circuit board.What adopt in this special case is the JMC-5SC image pick-up device circuit that Korea S produces; (4) be movable strand, play fixing circuit board (3), and the rotation of circuit card (3) can adapt to the direction adjustment time; (5) be a little leading screw, be connected on the small size motor and the nut that is fixed on the circuit card (3) by flexibility links to each other with (3), when rotating, (5) just can make (3) to produce cross motion like this, again because (4) are twisted points, so can make whole wiring board generation rotation among a small circle; (6) be slowspeed machine, when motor when different direction is rotated, can play the effect of rotating (3) to different directions; (7) be the shell of image pick-up device, play protection and dustproof effect, as place car water-proof function should be arranged outward; (8) be video output cable, be connected with telltale; (9) be the image pick-up device bearing; (10) be the glass protecgulum, dark shallow gradual change look glass down in the employing differs cause too greatly not fogging to overcome sky and ground-surface brightness; (11) be that the 14H-1 type is taken into custody the dual-purpose TV machine; (12) be master antenna; (13) change switch for a pair of swivel, when received television program, finish the function of normal tv machine, when operating switch is connected video signal cable (8), need to disconnect master antenna, simultaneously, the positive and negative electrode of the line scanning deflecting yoke of Braum tube be exchanged, mapping about the image that produces becomes like this makes the image of seeing on the telltale identical with the back mirror effect that the driver is accustomed to.

Fig. 4 is the circuit of the telltale pick up tube deflecting yoke in the tree peony 14H-1 type vision receiver adopted of this example, D among the figure ₁D ₂Be the scanning change-over circuit that this example need be changed, exchange D ₁D ₂Mapping about the position just can make image produce.

The principle of work of this electronics rear-view mirror device can be sketched and be; During backsight by camera lens with backsight scenery focus point on ccd image sensor, become electric signal by photoelectric commutator, export to telltale and, make the image of image pick-up device become mapping, to reach the effect of back mirror by applying the deflecting yoke of reverse voltage.When received television program, cut off video input line by change-over swith, connect master antenna, and adjust the polarity of voltage of the deflecting yoke of telltale pick up tube simultaneously, make it can recover the normal function of vision receiver.

In this example, because of little in batches, it is too high to produce special-purpose Liquid Crystal Display (LCD) cost, and fails to adopt.In addition, the JMC-5SC imaging circuit that this example adopted does not add the infrared ray cut device, thereby, have the infrared ray sensitization function, as long as behind car, load onto infrared lamp, just can reach the effect that night vision, mist are looked.

Claims

1, a kind of vehicle electronics rear-view mirror device of using more, it is characterized in that: this device is made up of a dual-purpose TV machine of taking into custody that is contained in automotive front, a secondary in-car TV antenna, a slice ccd image sensor integrated circuit, one group of optical lens and a cover video conversion circuit, takes into custody the dual-purpose TV receptor and changes switch with rear-view mirror device by three swivels and be connected.

2, device according to claim 1 is characterized in that: three swivels change one of switch cutter and are connected TV and backsight signal switching circuit, and other two knife-like switches are connected in the commutation circuit of picture tube scanning yoke both positive and negative polarity.

3, device according to claim 1 is characterized in that: the glass protecgulum of rear-view mirror device is last dark shallow gradual change look glass down.

4, device according to claim 1 is characterized in that: its backsight image pick-up device is installed in behind the car in the glass port.

5, device according to claim 1 is characterized in that: its backsight image pick-up device is installed in the middle place of taillight behind the car.

6, device according to claim 1 is characterized in that: its backsight image pick-up device is installed in ceiling outside back, compartment.