JPH05104999A - Rear view visual recognition device for vehicle - Google Patents

Abstract

PURPOSE:To form a small device on the whole while securing conventional visibility, by forming reflection members into a convex surface protruding toward the rear of a car body in the device comprising refraction members and reflection members of which protrusion outside a vehicle is restricted to the minimum. CONSTITUTION:A back view is refracted by a prism 10, reflected by a mirror 12 toward a prism 11, and refracted by the prism 11 in an inverse direction to the prism 10 to be seen by a driver. In such a structure, a sufficient back view can be secured while setting a protruding quantity of a back view recognizing device out from a door can be restricted to the minimum. When the mirror 12 is formed in a back protruding curved surface, a similar view as that by a plane mirror 112 can be provided, while incidental positions P1, P2 for L1, L2 to the mirror 12 are deflected toward the center compared to incidental positions Q1, Q1 for M1, M2. Large prisms are therefore required when the mirror 112 is used, while if the curved surface mirror 12 is used, the prisms 10, 11 can be small, and the curved surface mirror can be small from P1 nearly to P2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle rear visual recognition device.

[0002]

2. Description of the Related Art As a rear view device attached to a vehicle, a so-called rearview mirror device, door mirrors and fender mirrors are well known. And a mirror or the like arranged in the mirror housing.

By the way, in such a mirror device, it is known that the mirror housing is projected to the outside of the vehicle and the vehicle width is substantially increased. Therefore, in recent years, there has been proposed a device that uses a refraction member composed of a prism and that significantly reduces the amount of projection of the device to the outside of the vehicle. This rear visual recognition device is composed of a refraction member, a reflection member (mirror), etc. Specifically, a housing is provided on the door, a part of this housing is exposed to the outside surface of the door, and the opening is formed in this part. Members are arranged, and a reflecting member (mirror) for reflecting the rear view obtained through the refracting member toward the vehicle interior side is arranged inward of the refracting member in the housing, and further, the vehicle interior of the housing. The opening formed on the side is provided with a refraction member that refracts the field of view reflected by the reflection member in the direction of the line of sight of the occupant.

[0004]

However, in such a rear-viewing device, since the area of the entrance surface of the refraction member is large, the entire device becomes large, and the layout restrictions on the vehicle body of the device become large and the weight also increases. It is known to do. . Further, it is known that the prism that constitutes the refraction member is particularly expensive, and the larger the refraction member, the more the cost of the apparatus increases.

[0005]

In order to solve the above-mentioned problems, the present invention is a vehicle rear visual recognition device which is arranged on a side surface of a vehicle, and which is provided on a reflection member and at least outside the vehicle interior of the reflection member. It is composed of a refraction member, and the reflection member is constituted by a curved surface convex toward the rear of the vehicle body.

[0006]

Since the reflecting member is formed by the curved surface that is convex toward the rear of the vehicle body, the area of the rear field of view reflected on the reflecting member is small, and the refractive member is secured while maintaining the same range of view as when a plane mirror is used. Can be downsized, and the entire device can be downsized.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a perspective view of a driver's seat of a passenger car, FIG.
Shows a perspective view of the rear visual recognition device. In the figure, 1 is a front seat, 2 is a dashboard, 3 is a handlebar, 4 is a windshield, 5 is a door, and 6 is a side window.

A rear visual recognition device 8 is arranged on the door 5,
The rear visual recognition device 8 includes a housing 9, prisms 10 and 11 that are refracting members, and a mirror 12 that is a reflecting member. As shown in FIG. 1, the housing 9 has an outer portion 9a exposed to the outside of the side window 6,
The prism 10 is attached to the opening 9b formed in the outer portion 9a. Further, an opening 9c is formed on the vehicle interior side of the housing 9, and the prism 11 is attached to the opening 9c. The mirror 12 is fixedly provided on the inner surface side of the front portion 9d of the housing 9, and the mirror 12, the prism 10,
A space S is formed inside the rear visual recognition device 8 by the upper surface 11 and the lower surface 9f of the housing 9. As is apparent from FIG. 2, the prism 10 is provided outside the vehicle interior of the mirror 12,
The prism 11 is arranged on the vehicle interior side of the mirror 12, so that the rear view is first refracted by the prism 10,
This refracted rear view is reflected by the mirror 12 toward the prism 11 side, is refracted in the direction opposite to the prism 10 by the prism 11, and is reflected by the driver's eyes. With the rear visual recognition device 8 having such a structure, it is possible to obtain a sufficient rear visual field while the amount of protrusion of the device from the door 5 to the outside is extremely small.

The lower surface 9f of the housing 9 has an inlet 9
Outlet ports 9h are formed on the upper surface 9e, and the inlet ports 9g communicate with the duct 14 of the air conditioner. Duct 14
Is a door-side duct 14a formed on the base 5a of the door 5, and
It is separated into the instrument panel side duct 14b formed inside the instrument panel and is separated into these ducts 14a and 14b,
These ducts 14a and 14b are in a state where the door 5 is closed,
That is, they communicate in the state of FIG. This allows the housing 9
The fogging of the mirror 12 and the prisms 10 and 11 inside is prevented.

By the way, in this embodiment, as shown by the solid line in FIG. 3, the mirror 12 is formed by a curved surface convex toward the rear. In FIG. 3, A indicates the driver side inside the vehicle interior, and B indicates the rear view side outside the vehicle interior with the alternate long and short dash line in between. , L3 reflected by the mirror 12
Become L4 and enter the driver's point of view. On the other hand, 1 in FIG.
The imaginary line indicated by 12 shows the case where the mirror is formed by a flat surface. In this case, the rear view is incident on the mirror 112 like M1 and M2, and is reflected like M3 and M4 to the driver's viewpoint. enter. L1 and M1, L2 and M2 intersect at predetermined positions behind the vehicle, and L3 and M3 and L4
And M4 meet at the driver's eyes. Therefore, the mirror 12 (curved surface mirror) and the mirror 112 (planar mirror) in FIG. 3 transmit the same field of view behind the vehicle to the driver.

It should be noted here that when the curved mirror 12 is used, the incident positions P1 and P2 of L1 and L2 with respect to the mirror 12 are the same as the plane mirror 112, but the incident positions Q1 and Q2 of M1 and M2. That is, it is closer to the center of the mirror 12. Therefore, the plane mirror 112
When using, a large prism is required as shown by 100 and 110 in FIG. 3, whereas when a curved mirror 12 is used, the prism becomes small as shown by 10 and 11, and the curvature mirror is P1. To P2
Can be miniaturized to near. This makes it possible to reduce the size of the entire device, improve the degree of freedom in layout on the vehicle, and reduce the weight. It is known that the prism is expensive, but by reducing the size of the prism, the manufacturing cost of the device can be reduced.

[0012]

As described above, according to the present invention, since the reflecting member is formed by the curved surface that is convex toward the rear of the vehicle body, the area of the rear view reflected on the reflecting member is small, and the plane mirror is used. It is possible to reduce the size of the refraction member and the size of the entire device while ensuring the same range of visibility as in the above case.

[Brief description of drawings]

FIG. 1 is a perspective view of a driver's seat of a passenger car.

FIG. 2 is a perspective view of a rear visual recognition device.

FIG. 3 is a schematic plan view of a rear visual recognition device.

[Explanation of symbols]

8 ... Rear view device, 10, 11 ... Refraction member, 12 ...
Reflective member.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichi Wakabayashi 2-8-15 Yoshinodai, Kawagoe City, Saitama Matsuyama Manufacturing Co., Ltd. Kawagoe Factory

Claims (1)

[Claims] 1. A rear visual recognition device for a vehicle arranged on a side surface of a vehicle, comprising a reflecting member and a refracting member provided at least outside a cabin of the reflecting member, wherein the reflecting member is projected rearward of a vehicle body. A rear visual recognition device for a vehicle, which is configured by a curved surface having a shape.