JPH074176U - Non-projecting rear endoscope - Google Patents

Abstract

(57) [Summary] [Purpose] The rear view and the side view can be sufficiently secured from the inside, and it is formed without protruding from the side window.
Provide a non-protruding rear endoscope with excellent aerodynamics and aesthetics. [Structure] A lens body 2 having a Fresnel lens portion 4 is formed integrally with a side window or the like at a position that does not project from the side of a vehicle door 15 or the like, and the lens body 2 is provided inside a vehicle or the like.
The reflecting surface is provided with the mirror surface body 3 for converging the bent light beam from the eye to the viewpoint, and the rear view is condensed to the eye. [Effect] By adopting a shape that does not project from the side, safety, aerodynamics, and aesthetics can be improved, and the actual blind spot can be made zero.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rearview endoscope in which a part thereof is integrally formed in a side window of an object such as a vehicle, and particularly to a non-projecting rear view that does not project from the side window and does not cause a blind spot in the field of view. Concerning the endoscope.

[0002]

[Prior art]

 Most of the rear scopes attached to vehicles, etc. are mounted on the side of the bonnet or on the side pillars close to the driver. These all project from the side of the vehicle. If the rear endoscope is protruding from the side, it not only poses a problem in terms of operational safety, but it also causes air resistance, which causes one of the deterioration of vehicle performance. In addition, there is a problem that the appearance is impaired. Therefore, a rear-view endoscope that does not impair the securement of the field of view as a rear-view endoscope and solves the above-mentioned problems has been studied, and one known technique thereof is disclosed in Japanese Patent Publication No. 3-503752. This "vehicle rear confirmation device" is arranged so that it does not protrude as much as possible from the side window, and it is an optical component consisting of a prism or the like that bends the rays from the rear view toward the inside of the vehicle, and the bending rays from the optical components. It consists of a reflector installed inside the car to reflect light, and an optical component such as a prism installed inside the car to bend the reflected light from the reflector and focus it on the viewpoint. . An embodiment is also disclosed in which a Fresnel prism is adopted as the optical component for reasons of weight and price, interference with a side window is reduced, and light dispersion is reduced as much as possible.

[0003]

[Problems to be solved by the device]

 As described above, when the rear endoscope is projected from the side window of a vehicle or the like, there are problems as described above in terms of safety, aerodynamics, and styling. On the contrary, if the rear endoscope is not projected, there is a problem that the rear view is narrowed. The one disclosed in Japanese Patent Publication No. 3-503752 solves the above problems, but has the following problems.

FIG. 10 shows a schematic structure of a rear confirmation device disclosed in Japanese Patent Publication No. 3-503752, which includes a refraction optical device 31 which is slightly protruded laterally from a vehicle body boundary line 30 and intersects with the refraction optical device 31. And a refracting optical device 33 that is disposed inside the vehicle body so as to face the optical device 31 and that is connected to the reflecting device 32. The backward field of view is refracted, reflected, and refracted as shown by arrows A, B, C, and D, and focused on the viewpoint (hereinafter referred to as EP). By appropriately setting the arrangement of the reflecting device 32 and the optical device 33, and by examining the shape and content of the optical device 31, it is possible to reduce the protrusion from the side of the vehicle body as much as possible and widen the rear view. However, in this case, as shown in FIG. 10, a substantial blind spot of the angle θ ₁ occurs. That is, the intersection angle θ ₁ between the line F connecting the intersection E and EP of the reflecting device 32 and the vehicle body boundary line 30 and the line G connecting the free end H of the optical device 33 inside the vehicle body and EP becomes the blind spot. However, there is a problem that the lateral field of view is reduced by this amount. In addition, this rear confirmation device is a large-scale device itself, and it is necessary to consider the mounting position and space saving. FIG. 11 shows a conventional rear-view endoscope 34 which is disposed so as to project laterally from the vehicle body boundary line 30. In this case as well, a substantial dead angle of the angle θ ₂ occurs as shown, but the substantial dead angle θ ₁ of FIG. 10 is larger than the substantial dead angle θ ₂ of the conventional rear-view endoscope 34.

The present invention has been made in view of the above circumstances, and does not protrude from the side of an object such as a vehicle to ensure safety and solve aerodynamic and style problems. It is an object of the present invention to provide a non-projecting type rear endoscope that eliminates a substantial blind spot and secures light collection at a viewpoint (EP).

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a lens body formed on a side surface of a target object to bend and introduce a light beam from a rear view into the target object, and a lens body disposed in the target object. And a mirror surface body that collects the bending light beam from the body to the viewpoint inside the object, and the mirror surface object is rotatably supported on the object side so as to change the direction of the reflecting surface. It constitutes a projection type rear endoscope. Further, more specifically, the lens body is made of a transparent body of acrylic or acrylic styrene copolymer forming a Fresnel lens portion in a part thereof, and the object has a triangular side window. And the lens body is integrally formed on the triangular side window in a non-projecting manner, and is characterized by a non-projecting type rear endoscope.

[0007]

[Action]

 Light rays from the rear field of view are bent and introduced into the object by the lens body integrally formed without protruding from a part of the side window. Since the specular body is arranged inside the object and the lens surface of the lens body and its reflecting surface are arranged so as to intersect with each other, the bending light ray is reflected by the specular body and faces the EP side. Since the specular body is rotatably supported by the object so as to change the direction of its reflecting surface, it can be easily adjusted to focus the reflected light beam on the EP. Since the lens body is transparent and the mirror surface body is separate from the lens body, there is nothing that obstructs the lateral field of view from the EP, and the blind spot is virtually zero.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional view showing the overall structure of the present embodiment, FIG. 2 is a partial perspective view showing the structure and arrangement of each component of the present embodiment in an easy-to-understand manner, and FIG. 3 is a lens body of the present embodiment. FIG. 4 is a side view of a vehicle showing a forming position, FIG. 4 is a side view of a door having a triangular window in which the lens body of this embodiment is formed, FIG. 5 is a schematic sectional view taken along the line JJ of FIG. 4, and FIG. FIG. 7 is a partial cross-sectional view showing an embodiment of a body support structure, FIG. 7 is a partial cross-sectional view for explaining the light entering system path to the EP side in the rear view according to this embodiment, and FIG. 8 is another embodiment of the lens body. FIG. 9 is an explanatory partial cross-sectional view showing an example, and FIG. 9 is an explanatory diagram showing a substantial blind spot of this embodiment.

As shown in FIG. 3, in this embodiment, an automobile (including a truck vehicle) is raised as an object. The non-projecting type rear endoscope 1 of the present embodiment is formed at the position of the side window 17 of the vehicle 16, and in the case of the door 15 having the triangular window 12, it is integrated under the triangular window 12 as shown in FIG. Formed.

As shown in FIGS. 1 and 2, the lens body 2 is made of a transparent body having a cross-sectional shape bent in a dogleg shape, and is made up of a Fresnel lens portion 4 and a transparent window portion 5. In this embodiment, the lens body 2 is made of an acrylic transparent body, and a part of the lens body 2 is Fresnel processed by hot pressing to form the Fresnel lens portion 4. A transparent acrylic styrene copolymer may be used instead of acrylic. The lens body 2 may be formed of a prism 6 and a transparent window portion 5 instead of the Fresnel lens portion 4 as shown in FIG. 8, but in order to reduce the weight, the price and the interference with the side window, In the embodiment, the Fresnel lens unit 4 is adopted as described above. The Fresnel lens portion 4 and the transparent window portion 5 are shaped so as not to project from the outer plate 18 of the door 15. Further, the curved surfaces 7 and 8 are formed as curved surfaces as shown in the drawing, but may be flat surfaces. One end of the Fresnel lens portion 4 is supported on the sash member 13 side between the triangular window 12 and the side glass 11 via a sash member 9 having a packing member 9a and a packing 10 as shown in FIG. The side glass 11 is attached to the door 15 by the sash member 13 and the sash member 14 as shown in the drawing. On the other hand, the end of the transparent window portion 5 is supported on the side pillar 21 side of the vehicle 16 via the sash member 19 having the packing member 19 a of the triangular window 12 and the packing 20.

Next, the mirror body 3 will be described with reference to FIGS. 1, 2, 5, and 6. The reflecting mirror 23 is mounted on the front surface side of the mirror cover 24. The tip end side of the stay 25 is inserted into the mirror cover 24, and the mirror cover 24 is rotatably supported by the stay 25 via a support tool 26 (FIG. 6) provided in the mirror cover 24. On the other hand, a stopper 28 having a female screw portion 27 abuts on the inner plate 22 of the door 15, and a pedestal 29 surrounding the stopper 28 is fixed. The base end side of the stay 25 is screwed into the female screw portion 27 of the stopper 28. With the above structure, the stay 25 is rotatably supported by the pedestal 29 as shown in FIG. 2, and the mirror cover 24 is pivotally supported by the stay 25 as described above. Therefore, as shown in FIG. 1, the mirror 23 can freely change its mirror surface orientation with respect to the EP.

Next, referring to FIG. 7, a light entering form of the light beam according to the present embodiment will be described. A light ray from the rear view is bent at the bending surface 7 of the Fresnel lens portion 4 of the lens body 2 as shown by an arrow K, and is bent and bent inside the automobile while being influenced by the Fresnel element 4a of the Fresnel lens portion 4. It becomes L and hits the reflecting mirror 23 of the mirror body 3. As described above, since the mirror body 3 is rotatable around the tip of the stay 25 and the stay 25 is rotatable around the pedestal 29, the direction of the reflecting surface of the reflecting mirror 23 is bent. Can be changed freely with respect to the incident direction of. Thereby, the reflected light ray M reflected by the reflecting mirror 23 can be focused on the EP. That is, the rear field of view can be sufficiently taken into the EP side without causing the lens body 2 to protrude from the side surface of the door 15.

On the other hand, by selecting the mounting position of the mirror surface body 3, the mirror surface body 3 can be installed outside the system road connecting the EP and the transparent window portion 5 of the lens body 2, so that the side surface from the transparent window portion 5 The entrance system path to the EP side of the field of view is opened, and the lateral field of view is expanded. That is, as shown in FIG. 9, the mirror surface body 3 is prevented from intervening in the system of the line N connecting the intersection of the transparent window portion 5 of the lens body 2 and the side pillar 21 and EP, so that the present embodiment is prevented. In this case, unlike the prior art shown in FIGS. 10 and 11, the actual dead angle θ ₀ becomes zero. As described above, a wide field of view in which the rear field of view and the side field of view are sufficiently incident on the EP inside the vehicle 16 is secured.

As described above, FIG. 8 employs the prism 6 as the lens body, and it is possible to obtain substantially the same effect as that of the above-described embodiment.

In the above description, the shapes, structures, materials, etc. of the lens body 2 and the mirror surface body 3 are merely examples, and are not limited to those shown in the drawings. In addition, the non-projecting type rear endoscope 1 of the present invention is not only applied to the vehicle 16, but also to an optical device in which the projecting portion is not desirable, such as a lighting device for buildings and structures or an optical device for a toy. Applied.

[0016]

[Effect of device]

 According to the present invention, the following remarkable effects are obtained. 1) Since the object is installed so that it hardly projects from the side window, there is no risk of interfering with other objects and safety is ensured. In addition, the air resistance is reduced and the running performance can be improved. Furthermore, the appearance is ensured, it is not easily dirty, is not stolen, is not tampered with, and is easy to maintain. 2) Since the lens body is formed integrally with the side window, it can be handled and mounted easily. 3) Since the mirror body is rotatably supported, it is possible to easily focus the light entering system path such as the rear field of view on the EP side. 4) Since the actual blind spot can be made zero, not only the backward view but also the side view can be widened.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing the entire structure of an embodiment of the present invention.

FIG. 2 is a partial perspective view for explaining the shape and arrangement of main components of this embodiment.

FIG. 3 is a side view of the vehicle showing the formation position of the lens body of the present embodiment.

FIG. 4 is a side view of a door having a triangular window in which the lens body of the present embodiment is formed.

5 is a schematic cross-sectional view taken along the line JJ of FIG.

FIG. 6 is a partial cross-sectional view showing an embodiment of a support structure for a specular body.

FIG. 7 is an explanatory partial cross-sectional view showing a light incident system path toward the EP side in the rear view according to the present embodiment.

FIG. 8 is a partial sectional view for explaining another embodiment of the lens body.

FIG. 9 is an explanatory diagram for explaining a substantial blind spot on the side of the present embodiment.

FIG. 10 is an explanatory diagram of a substantial blind spot of a conventional backward confirmation device of a known technique.

FIG. 11 is an explanatory diagram of a substantial blind spot of a conventional general endoscope.

[Explanation of symbols]

 1 Non-projecting type rear endoscope 2 Lens body 3 Specular body 4 Fresnel lens part 4a Fresnel element 5 Transparent window part 6 Prism 7 Bending surface 8 Bending surface 9 Sash member 9a Packing member 10 Packing 11 Side glass 12 Triangular window 13 Sash member 14 Sash Member 15 Door 16 Vehicle 17 Side window 18 Outer plate 19 Sash member 19a Packing member 20 Packing 21 Side pillar 22 Inner plate 23 Reflector 24 Mirror cover 25 Stay 26 Support tool 27 Female screw part 28 Stopper 29 Pedestal 30 Body boundary line

Claims (3)

[Scope of utility model registration request] 1. A lens body formed on a side surface of the object to bend and introduce a light ray from a rear view into the object, and a bending light ray from the lens body disposed in the object, A non-projecting rear-view endoscope, comprising: a mirror surface body that collects light at an internal viewpoint, wherein the mirror surface body is rotatably supported on the object side so as to change the direction of a reflection surface thereof. 2. The non-projecting-type rear endoscope according to claim 1, wherein the lens body is a transparent body of acrylic or acrylstyrene copolymer forming a Fresnel lens portion on a part thereof. 3. The non-projecting type rear endoscope according to claim 1, wherein the object is a vehicle having a triangular side window, and the lens body is integrally formed in the triangular side window in a non-projecting shape. .