CN218529732U

CN218529732U - Back-walking rearview device

Info

Publication number: CN218529732U
Application number: CN202222341942.9U
Authority: CN
Inventors: 张雨恩
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-02-28
Anticipated expiration: 2032-09-02

Abstract

The utility model relates to a back vision device especially relates to a back vision device of falling away. The method comprises the following steps: the device comprises a first light source channel, a second light source channel, a first rhombic prism, a second rhombic prism and a mirror support bracket; the first light source channel and the second light source channel are hollow cavities with openings at two sides; the first rhombic prism and the second rhombic prism are hexahedral prism bodies and respectively comprise a first mirror surface, a second mirror surface, a third mirror surface, a fourth mirror surface, a fifth mirror surface and a sixth mirror surface; the first mirror surface and the second mirror surface are parallel to each other; the third mirror surface and the fourth mirror surface are parallel to each other; the fifth mirror surface and the sixth mirror surface are parallel to each other; let behind the light incidence prism face through the rhombus prism, produce the displacement after the cubic reflection, make the user can be more clear observe the scene at head rear to through level and smooth structure interconnect, for the device provides higher stability, the backsight effect is more.

Description

Back-walking rearview device

Technical Field

The utility model relates to a back vision device especially relates to a back vision device of falling away.

Background

The back walking can exercise waist muscle and waist muscle, relieve waist muscle pressure, prevent and treat lumbar disc herniation, secondly need not crooked knee joint when falling the walking, the thigh muscle bears the gravity reinforcing to ligament, muscle, the thigh muscle of exercising the knee joint all obtain taking exercise, prevent knee joint disease. Modern patients are when falling away the motion, because the unable direct visual rear of patient, can only look to the head partially, have the possibility of falling down, because constantly rotate the head, also can have dizziness or cervical vertebra injured's danger.

Based on the improvement, the rearview mirrors appear on the market at present, but the rearview mirrors are generally simple in structure, and a mirror is hung in front of eyes of a user to observe the back of the user; this kind of rearview mirror simple structure, when the user falls away, the mirror surface rocks easily to lead to the formation of image unstable enough, have the possibility that causes danger.

SUMMERY OF THE UTILITY MODEL

The utility model provides a back vision device falls away, it erects in user's head, when the user falls away, can provide sufficient stability and good imaging technology.

A reverse-walking rearview device, comprising: the device comprises a first light source channel, a second light source channel, a first rhombic prism, a second rhombic prism and a mirror support bracket;

the first light source channel and the second light source channel are hollow cavities with openings at two sides;

the first rhombic prism and the second rhombic prism are hexahedral prism bodies and respectively comprise a first mirror surface, a second mirror surface, a third mirror surface, a fourth mirror surface, a fifth mirror surface and a sixth mirror surface;

the first mirror surface and the second mirror surface are parallel to each other; the third mirror surface and the fourth mirror surface are parallel to each other; the fifth mirror surface and the sixth mirror surface are parallel to each other;

the first mirror surface, the second mirror surface, the third mirror surface and the fourth mirror surface are side mirror surfaces and are connected with each other; the fifth mirror surface and the sixth mirror surface are upper and lower mirror surfaces; the side mirror surface is connected into a complete hexahedral mirror body;

an included angle between the first mirror surface and the sixth mirror surface and an included angle between the second mirror surface and the fifth mirror surface are first included angles, and the first included angles are between 30 and 60 degrees; the included angle between the first mirror surface and the fifth mirror surface and the included angle between the second mirror surface and the sixth mirror surface are second included angles, and the second included angles are 120-150 degrees; the sum of the included angles on the two same sides is 180 degrees;

the third mirror surface and the fourth mirror surface are parallelogram with the included angles matched with those of other mirror surfaces;

the mirror support bracket comprises a mirror fixing plate, a nose support part and an observation frame; one side of the nose support part is connected to the middle area of the mirror surface fixing plate, and areas on two sides of the mirror surface fixing plate are areas for connecting the fifth mirror surface; two sides of the other side of the nose support part are connected with symmetrically arranged observation frames;

the first light source channel, the second light source channel, the first rhombic prism, the second rhombic prism and the mirror support bracket are coated with non-transparent shells;

the first rhombic prism and the second rhombic prism are respectively and fixedly connected to the mirror surface fixing plate and positioned on two sides of the nose support part; the inner side edges of the sixth mirror surfaces of the first rhombic prism and the second rhombic prism are respectively connected with one side of the observation frame and are positioned on the same plane;

one side of the first light source channel and one side of the second light source channel are connected with the sixth mirror surface, and the other side of the first light source channel and the other side of the second light source channel are communicated with a light source.

Further, the first included angle is between 40 and 50 degrees; the second included angle is 130-140 degrees.

Further, the first included angle is 45 degrees, and the second included angle is 135 degrees.

Further, the first mirror surface and the fifth mirror surface are coated with a reflective film.

Further, the second specular surface is coated with a semi-reflective film.

Further, the second mirror reflects and transmits light by using polarization splitting.

Furthermore, the first light source channel, the second light source channel, the first rhombic prism, the second rhombic prism and the mirror support bracket adopt a nested tenon-and-mortise structure at the butt joint position.

Furthermore, the rear sides of the first light source channel and the second light source channel are connected with a head fixing band, and the head fixing band has elasticity.

The beneficial effect of this scheme is: let behind the light incidence prism face through the rhombus prism, produce the displacement after the cubic reflection, make the user can be more clear observe the scene at head rear to through level and smooth structure interconnect, for the device provides higher stability, the backsight effect is more.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 is a schematic structural diagram of parts in an embodiment of the present invention;

fig. 2 is a side view of a first rhombus prism in an embodiment of the invention;

fig. 3 is a schematic diagram of an assembled structure and a light source path of the backward-looking device according to the embodiment of the present invention;

description of reference numerals:

1. a first light source channel; 2. a second light source channel; 3. a first rhombic prism; 4. a second rhombic prism; 5. a mirror support bracket; 51. a mirror surface fixing plate; 52. a nose pad component; 53. a viewing frame; 61. a first mirror surface; 62. a second mirror surface; 63. a third mirror surface; 64. a fourth mirror surface; 65. a fifth mirror surface; 66. a sixth mirror surface; 7. a head fixing band;

alpha, a first included angle; beta. a second included angle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a backward-walking rearview device includes: the device comprises a first light source channel 1, a second light source channel 2, a first rhombic prism 3, a second rhombic prism 4 and a mirror support bracket 5; the first light source channel 1 and the second light source channel 2 are hollow cavities with openings at two sides; in this embodiment, the first light source channel 1 and the second light source channel 2 are cuboids, and a hollow part is used for natural light to pass through; the first rhombic prism 3 and the second rhombic prism 4 are hexahedral mirror bodies and respectively comprise a first mirror surface 61, a second mirror surface 62, a third mirror surface 63, a fourth mirror surface 64, a fifth mirror surface 65 and a sixth mirror surface 66; the first mirror 61 and the second mirror 62 are parallel to each other; the third mirror 63 and the fourth mirror 64 are parallel to each other; the fifth mirror 65 and the sixth mirror 66 are parallel to each other; the first mirror 61, the second mirror 62, the third mirror 63, and the fourth mirror 64 are side mirrors and connected to each other; the fifth mirror 65 and the sixth mirror 66 are upper and lower mirrors; the side mirror surface is connected into a complete hexahedral mirror body; an included angle between the first mirror surface 61 and the sixth mirror surface 65, and an included angle between the second mirror surface 62 and the fifth mirror surface 66 are first included angles α, and the first included angles α are between 30 and 60 degrees; the included angle between the first mirror surface 61 and the fifth mirror surface 66, and the included angle between the second mirror surface 62 and the sixth mirror surface 65 are second included angles β, and the second included angle β is between 120 degrees and 150 degrees; the sum of the included angles on the two same sides is 180 degrees; the third mirror 63 and the fourth mirror 64 are parallelograms with inner angles matched with those of other mirrors; the rhombic prism can lead the light incident on the prism surface to generate lateral displacement after two or three times of total reflection, but does not change the propagation direction at the same time; a beam splitter prism made by coating and gluing or a polarized beam splitter made by coating. The mirror holder bracket 5 comprises a mirror fixing plate 51, a nose holder part 52 and an observation frame 53; one side of the nose pad part 52 is connected to the middle area of the mirror fixing plate 51, and the areas on both sides of the mirror fixing plate are areas for connecting the fifth mirror; the nose pad part 52 faces to one side of the user and has an inward concave part which can fit with the shape of the nose bridge of the user, so that the main supporting function is achieved after the whole rearview device is worn, and the wearing feeling is more comfortable. Two sides of the other side of the nose support part 52 are connected with symmetrically arranged observation frames 53; the observation frame 53 is similar to the glasses frame, when the nose support part 52 is erected above the bridge of the nose of the user, the observation frame 53 is positioned in front of the eyes of the user, different lenses can be added according to the requirements of the user, if the user is short-sighted, the short-sighted lenses can be added, and the flexibility is high. The outer sides of the first light source channel 1, the second light source channel 2, the first rhombic prism 3, the second rhombic prism 4 and the mirror support bracket 5 are all coated with non-transparent shells; the first rhombic prism 3 and the second rhombic prism 4 are respectively and fixedly connected to the mirror surface fixing plate 51 and positioned at two sides of the nose support part 52; the fifth mirror 65 is bonded to the mirror fixing plate 51 and then connected to the mirror fixing plate, and is located at both sides of the front portion of the nose pad part 52; the inner side edges of the sixth mirror surface 66 of the first rhombic prism 3 and the second rhombic prism 4 are respectively connected with one side of the observation frame 53 and are positioned on the same plane; one side of the first light source channel 1 and one side of the second light source channel 2 are connected to the sixth mirror 66, and the other side of the first light source channel and the other side of the second light source channel are connected to a light source.

In this embodiment, an opening on one side of the light source channel is used for fixing the sixth mirror 66 and connecting the rhombic prism; the outer side of the rhombic prism is wrapped with a shell (not shown in the figure), and the rhombic prism is respectively connected with the light source channel and the mirror support bracket 5; the outer side of the mirror support bracket 5 is also covered with a shell (not shown in the figure); the housing covers the rhombic prism and the mirror support bracket 5, so that light sources at other angles can be prevented from entering the rearview device, and light source transmission is influenced. The first light source channel 1, the first rhombic prism 3, the second light source channel 2 and the second rhombic prism 4 are in bilateral symmetry on the basis of the central line of the mirror support bracket 5. Wherein spare part can adopt the cardboard to link through the gluing agent, also can adopt working of plastics or wooden piece, adopt nested structural style to link at the kneck, other connected modes are not listed one by one here, based on the structure of the back vision device of falling away above, the connected mode of different forms has all fallen into the utility model discloses an in the protection range.

Specifically, as shown in fig. 3, the backward-looking device in this embodiment specifically works on the principle that the device is erected on the head of a user, a light source enters a right-and-left-arranged rhombic prism through a right-and-left-arranged light source channel, passes through a sixth mirror 66, is refracted at a first mirror 61 and is refracted to a second mirror 62, the light source is refracted by the second mirror 62 and enters a fifth mirror 65, the light source is reflected by the fifth mirror 65, and the second mirror 62 is penetrated, so that the user can see a backward image at the observation frame 53 and backward-look without frequently twisting his head, and the device has high stability and is comfortable for the user to experience.

Further, the first included angle alpha is between 40 and 50 degrees; the second included angle beta is between 130 and 140 degrees. The angle of the area can make the image of the rearview device clearer.

As shown in fig. 2, further, the first included angle α is 45 degrees; the second included angle beta is 135 degrees. In this embodiment, when the included angle between the first mirror 61 and the sixth mirror 65 and the included angle between the second mirror 62 and the fifth mirror 66 are 45 degrees, the refraction effect is the best. The light source is firstly incident to the first mirror 61 through the light source channel, the first mirror 61 refracts the light source to the second mirror 62, and the second mirror 62 refracts the light source to the fifth mirror 65, and at this time, the turning path of the light source forms an angle of 90 degrees. The fifth mirror 65 reflects the light source and passes through the second mirror 62 into the viewing frame 53 area to allow the user to view the scene behind; the vertical path can optimally present the scene behind, and a good imaging effect is achieved.

Further, the surfaces of the first mirror 61 and the fifth mirror 65 are coated with reflective films. In the embodiment, the surface is coated with the reflective film, so that the reflection effect of the light source is better.

Further, the surface of the second mirror 62 is coated with a semi-reflective film. In this embodiment, the spectroscope coated with the dielectric film realizes 50% transmission and 50% reflection through the dielectric film; this ratio may be other, for example, the dielectric film may be designed to be 10% transmissive and 90% reflective or any other ratio, which may be adjusted according to the specific application.

Further, the second mirror 62 uses polarization splitting to reflect and transmit light. In the embodiment, polarization splitting is based on the principle of light polarization, most of the light is reflected at 45 degrees, reflects S light and transmits P light, the polarization state of incident light is adjusted by matching with a half-wave plate, and reflected light and transmitted light can be adjusted in a non-polar manner theoretically; in the case that the incident light is natural light, the incident light is basically half-transparent and half-reflective; there is also a depolarizing beam splitter that has a deviation of transmission from reflection of less than 5% depending on the polarization state of the incident light.

Further, the first light source channel 1, the second light source channel 2, the first rhombic prism 3, the second rhombic prism 4 and the mirror support bracket 5 adopt a nested tenon-and-mortise structure at the butt joint position. In this embodiment, the material of back vision device can adopt wooden structure or rigid plastic, and its structure weight is slim and graceful, adopts tenon fourth of twelve earthly branches structure at the kneck of each part, convenient dismantlement and installation, and the sound construction is stable, easily carries.

Further, a head fixing strap 7 is connected to the rear sides of the first light source channel 1 and the second light source channel 2, and the head fixing strap 7 has elasticity. In this embodiment, the elastic head fixing band 7 is used, so that the looseness of the head fixing band can be adjusted according to different head types of users, and the rearview device can be stably worn on the head of the user.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof.

Claims

1. A reverse-walking rearview device, comprising: the device comprises a first light source channel, a second light source channel, a first rhombic prism, a second rhombic prism and a mirror support bracket;

the third mirror surface and the fourth mirror surface are parallelogram of which the inner angle is matched with the included angle of other mirror surfaces;

2. A backward walking rearview device according to claim 1, wherein the first included angle is between 40 and 50 degrees; the second included angle is 130-140 degrees.

3. A backward walking rearview device as claimed in claim 2, wherein the first included angle is 45 degrees and the second included angle is 135 degrees.

4. The backward-walking rearview device of claim 3, wherein the first mirror surface and the fifth mirror surface are coated with a reflective film.

5. A back-off rearview device as claimed in claim 4, wherein said second specular surface is coated with a semi-reflective film.

6. A backward looking device according to claim 4, wherein said second mirror is arranged to reflect and transmit light by means of polarization splitting.

7. The backward-walking rearview device as claimed in any one of claims 1 to 6, wherein the first light source channel, the second light source channel, the first rhombic prism, the second rhombic prism and the mirror holder bracket adopt a nested tenon-and-mortise structure at the butt joint.

8. The backward walking rearview device of any one of claims 1-6, wherein a head fixing strap is connected to the rear side of the first light source channel and the rear side of the second light source channel, and the head fixing strap has elasticity.