JPS5830175B2 - Automotive blind area visibility device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blind area visibility device for cab-over type trucks, buses, etc.

In the case of cab-over type trucks and buses where the driver's seat is in a high position, there is a main rearview mirror and an undermirror on the outside of the vehicle, so if there is a person or bicycle within the blind area, the driver can unable to visually recognize the
The difference between the rear and rear wheels when making a left turn has caused many accidents involving people and bicycles, which has become a social problem.

FIG. 1 is a front view of a part of a conventional truck, and FIG. 2 is a side view of the same.

As shown in these figures, in trucks, etc., the main outside mirror b is attached to the stay a that projects outside.
and an under mirror C are installed, but the field of view with the main outside mirror B is B shown in Figure 3, and the field of view with the under mirror C is C, which is required for safety in Area Y notified by the Ministry of Transport. On the other hand, there is a blind area X.

Furthermore, since the under mirror C has a small curvature of 100 to 120 R, the image produced by the under mirror C is small and has a large distortion, resulting in poor visibility.

In order to improve the drawbacks of the conventional device as described above, it is conceivable to install a mirror device for blind area visibility outside the main outside mirror b and the under mirror C.

However, depending on the mounting position of such a mirror device for blind area viewing, it may actually obstruct the driver's direct view, and dust or raindrops may adhere to the objective mirror due to wind while driving. There is a problem of obstructing visibility.

In view of the problems of the prior art as described above, the main purpose of the present invention is, of course, to eliminate the blind area X shown in FIG. It is an object of the present invention to provide a blind area visual recognition device for an automobile that has clear visibility while making it difficult for dust, raindrops, etc. to adhere to the vehicle.

Another object of the present invention is to provide a blind area viewing device for an automobile that is relatively simple and easy to install and easy to implement.

Embodiments of the present invention will be described below with reference to FIGS. 4 to 19.

FIG. 4 is a front view of an automobile showing a state in which the device of the present invention is installed, and FIG. 5 is a side view of the vehicle. A periscope type viewing device is attached near the upper corner of the side, and the periscope type viewing device has an objective lens 4 made of a concave lens or a concave Fresnel lens in the housing to capture the blind area between the main outside mirror and the under mirror. It is characterized in that it is provided facing downward, and the image captured by the objective lens is reflected by the reflecting mirror 2 or by the reflecting mirror and the eyepiece 3 in the direction of the eye point EP of the driver's vehicle.

In this way, the field of view obtained by the periscope visual recognition device of the present invention becomes Z shown in FIG. 6, and can completely cover the blind area X shown in FIG. 3.

FIG. 7 is a sectional front view showing a specific example of the periscope type visual recognition device, FIG. 8 is a side view of the same, and FIG. 9 is B of FIG. 7.
10 is a view seen from direction C in FIG. 7.

In these figures, i/ indicates the roof of the automobile driver's cab, and in the present invention, a part of the upper corner of the driver's cab on the opposite side from the driver's seat is opened and a periscope-type visual inspection is carried out through the seal backing 6 on the cover. Install the housing 5 of the device.

This housing 5 is provided to protrude slightly diagonally forward from a part of the left corner of the driver's cab, and an opening 9 is provided in the downward wall of the housing, and an objective lens 4 made of a concave lens or a concave Fresnel lens is provided in the opening. Install it facing downwards,
The objective lens is designed to capture the field of view that is the blind area of the main outside mirror b and the under mirror C.

Then, reflecting mirrors 2 and 3 are attached to the inner surface of the housing 5 via pivots 7 and 8, so that the image obtained by the objective lens 4 is reflected toward the driver via the reflecting mirrors 2 and 3. do.

A transparent protective cover 10 is provided on the objective lens 4 made of the concave lens or concave Fresnel lens, if necessary, and a small wiper 11 is installed in front of the transparent protective cover 10.

Further, the part facing the indoor side of the housing is formed into an opening 12, and the interior window 14 is inserted into the opening through a seal backing 13.
Install.

The reflecting mirror 2, the eyepiece 3, the transparent protective cover 10, and the indoor window 14 are equipped with heaters to prevent fogging, if necessary, and the objective lens 4, the reflecting mirrors 2, 3, The eye point EP is arranged approximately on a straight line as shown in FIG. 6, so that a dynamic field of view that coincides with the direction of travel of the vehicle as seen from the driver can be obtained.

FIGS. 11 and 12 show an embodiment different from the above.

In other words, this embodiment is basically based on FIGS. 7 to 10.
It is the same as the one shown in the figure, but the use of one reflecting mirror 3 is abolished, and the image obtained by the objective lens 4 is transferred to one reflecting mirror 2.
The light is reflected in the direction of the driver.

This simplifies the structure and makes the device smaller and lighter.

Since the other configurations are the same as those shown in FIGS. 7 to 10, a detailed explanation will be omitted, but it is preferable that the reflecting mirror 2 can be adjusted by a drive unit 15 that can be controlled remotely.

In the case of the embodiment shown in FIGS. 7 to 10, the positions of the main outside mirror b and the reflector 3 as seen from the driver's side are as shown in FIG. 13.

When a car turns left, the driver mainly focuses on the left main outside mirror while operating the steering wheel, changing gears, etc., so it is better to have the reflector of the periscope-type visibility device as close to the main outside mirror as possible. .

In the present invention, since the periscope type visual recognition device is placed near the upper corner of the driver's cab of the automobile on the side opposite to the driver's seat, the amount of line of sight movement is as small as about 15 to 20, and visual recognition can be performed almost simultaneously. can.

14 to 16 and 17 to 19 show still other embodiments of the present invention.

In these embodiments, the objective lens 4 and the reflectors 2 and 3 are built into a housing, and the housing is attached to the front of the upper part of the windshield or the upper part of the door glass on the side opposite to the driver's seat. be.

That is, in the embodiment shown in FIGS. 14 to 16, the reflecting mirrors 2 and 3 and the objective lens 4 are assembled in a housing 16, and an opening 17 at one end of the housing is connected to the upper left corner of the windshield 19 using an adhesive 18. At the same time, the housing is fixed to the vehicle body 1 using mounting fittings 20, 21, 22, 23, mounting bolts 24, etc.

Note that 25 in the figure indicates a drip rail.

In the embodiment shown in FIGS. 17 to 19, a housing 16 similar to the previous embodiment is bonded to the upper front end of a door glass 26 with an adhesive 18, and the housing is attached to a mounting bracket 22.
It is fixed to the window frame 31 of the door 30 with γ, 28 and bolts 29, and the other configurations are the same as those of the embodiment shown in FIGS. 14 to 16.

In the embodiments shown in FIGS. 14 to 19 above, the objective lens and the reflector are assembled in the housing in advance and attached to the windshield or door glass by adhesive, so there is no opening in the roof of the automobile. It can be simply and easily implemented even in existing automobiles without the need for installation.

As described above, the present invention provides a cab-over type automobile in which a periscope-type visual recognition device is installed near the upper corner of the driver's cab on the side opposite to the driver's seat, and the main outside is attached to the housing of the periscope-type visual recognition device. An objective lens made of a concave lens or a concave Fresnel lens that can capture the blind area between the mirror and the under mirror is provided facing downward, and the image captured by the objective lens is transmitted through a reflecting mirror disposed in the housing. Since it is designed to reflect in the direction of the driver's eye point, it goes without saying that the driver can see the area that was previously a blind area, as shown in Figure 6. Alternatively, by using an objective lens made of a concave Fresnel lens, a wide blind area can be imaged.Furthermore, in the present invention, a periscope-type blind area viewing device is installed near the upper corner of the driver's cab on the opposite side from the driver's seat. Therefore, there is no risk that the blind area viewing device will obstruct the driver's direct view, and since the objective lens is mounted downward, it is difficult for dust or raindrops to adhere to the objective lens due to wind, etc. The combination of the fact that dust, raindrops, etc. are difficult to adhere to, and the combination of the objective lens made of a concave lens or concave Fresnel lens and the reflecting mirror has the effect of making it possible to visually recognize a bright image with little distortion.

[Brief explanation of drawings]

FIG. 1 is a front view showing a conventional mirror device, FIG. 2 is a side view of the same, and FIG. 3 is an explanatory diagram of a blind area by the conventional device. 4 and 5 are a front view and a side view of an automobile showing an example of an embodiment of the present invention, and FIG. 6 is an explanatory diagram of a visibility area according to the present invention. FIG. 7 is a longitudinal sectional view showing a specific example of the device of the present invention, FIG. 8 is a side view thereof, and FIGS. 9 and 10 are views taken along arrows B and C in FIG. 7. 11 and 12 are longitudinal sectional views and side views showing other specific examples, and FIG. 13 is a view of the embodiment shown in FIGS. 7 to 10 as seen from the driver's seat. FIG. 14 is an external view showing still another embodiment, FIG. 15 is an enlarged view of the main part, and FIG. 16 is a longitudinal sectional view. FIG. 1T is an external view showing still another embodiment, FIG. 18 is an enlarged view of the main part, and FIG. 19 is a longitudinal sectional view. b...Main outside mirror C...
...Under mirror, 1...Vehicle body, 2,3...
...Reflector, 4...Objective lens, 5.16
...Housing, 6 ... Seal backing, 7, 8 ... Pivot, 9゜12 ...
...Opening, 10...Transparent cover 14...
...interior window, 17...opening of housing,
18...Adhesive, 19...Windshield, 20~23°27.28...Mounting bracket,
26...Door window glass.

Claims (1)

[Claims] 1. In a cab-over type vehicle, a periscope-type visibility device is installed near the upper corner of the driver's cab opposite to the driver's seat, and the periscope-type visibility device has a blind area between the main outside mirror and the under mirror in the housing. An objective lens made of a concave lens or a concave Fresnel lens is provided facing downward, and the image obtained by the objective lens is reflected toward the driver's eye point via a reflecting mirror disposed in the housing. A blind area visibility device for automobiles that is characterized by its unique features.