JP3947362B2 - Vehicle rearward confirmation support device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for assisting a driver to confirm a position behind a vehicle in a vehicle such as an automobile.
[0002]
[Prior art]
When the vehicle is moved backward, it is impossible to see the back completely, and obstacles and the like have been detected based on experience and intuition. However, when the distance to the rear end of the vehicle is long as in the case of a large box-shaped truck, this operation is difficult even if the driver is experienced.
[0003]
Therefore, conventionally, as a device that assists in confirming the position of the rear of the vehicle in such a case, a device that first captures the rear by a TV camera or the like, and a device that secondly detects an obstacle behind the sensor Was known.
[0004]
[Problems to be solved by the invention]
However, the former apparatus has a problem of increasing costs. In addition, the captured image is visually confirmed by a monitor installed in front of the driver's seat, but this operation is not compatible with the original confirmation work of turning around or visually observing the rear with a rearview mirror, and left to the machine. If the obstacle is in the blind spot of the camera, there is a risk of irreversible danger.
[0005]
On the other hand, in the latter device, there is still a problem that the cost is high, and since it is only an obstacle that is detected, it is not possible to detect a rear groove or cliff or to detect a parking position indication attached to the ground. There was a problem that I could not.
[0006]
[Means for Solving the Problems]
The present invention was created in view of the above-mentioned problems of the prior art, and provides an apparatus that supports this on the premise of the original confirmation work of turning around and visually observing the rear with a rearview mirror. With the goal.
[0007]
That is, the rear confirmation assisting device of the present invention is characterized by projecting a display indicating the angular position of the rear end of the vehicle onto the ground from a projector provided in the vehicle.
[0008]
Therefore, according to the present invention, since the display indicating the angular position of the rear end of the vehicle is projected on the ground, it is not visible from the driver's seat like a passenger car, or it looks like a box truck. Since the corner position of the rear end of the vehicle, which is difficult to grasp the sense of distance, can be visually recognized in correspondence to the ground, the driver must check the left and right side mirrors of the driver's seat and the corner position of the left and right rear end of the vehicle, The effect | action which can confirm easily the relationship with other target objects is acquired.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. 1 and 2 show a first embodiment of the present invention. Reference numeral 1 in the figure denotes a projector that constitutes the support device of the present invention. In this embodiment, a pair is provided on the left and right of the rear end of a vehicle (here, a box-shaped truck is illustrated), and each angular position T1, The displays L1 and L1 indicating T1 are projected on the ground. In this embodiment, it is assumed that the display L1 indicating the angular position is a straight line, and this straight line starts from the intersection of the vertical line from the angular position T1 at the rear end of the vehicle T and the ground, and is located outside the vehicle in the width direction. (See Fig. 2) Although not shown, the straight line may be directed toward the rear side of the vehicle in the front-rear direction.
[0010]
Next, FIG. 5 to FIG. 9 show an example of the projector 1 that enables the display L1 to be projected onto the ground. The projector 1 includes a light source (a lamp is assumed here) 4 and a condensing / reflecting mirror 5 in a case 2 and a lens 6. In the figure, reference numeral 3 is a mounting bracket for the vehicle, and 7 is a wire connection hole. In this projector 1, the condensing extraction port of the condensing reflecting mirror 5 is formed into a flat shape in which the ratio of the vertical and horizontal diameters is several times, and direct light and reflected light from the light source 4 are taken out as a straight line, Further, a lens 6 is provided at the light collection outlet for expanding and emitting the light east only in the linear direction. In this embodiment, the projector 1 is turned on at the same time as the back lamp of the vehicle to project and display the displays L1 and L1 on the ground.
[0011]
FIG. 3 is a diagram showing a second embodiment of the present invention. In this embodiment, the display L2 indicating the angular position is assumed to be two straight lines that intersect at right angles, and these straight lines are the intersection of the perpendicular line from the angular position T1 at the rear end of the vehicle T and the ground. Each straight line goes to the outer side in the width direction and the rear side in the full length direction of the vehicle.
[0012]
Next, FIG. 10 and FIG. 11 show an example of the projector 10 that enables the display L2 to be projected onto the ground. The projector 10 includes a light source (a lamp is assumed here) 14 and condensing reflectors 15A and 15B in a case 12, and lenses 16A and 16B. In the figure, reference numeral 13 denotes a mounting bracket for the vehicle, and 17 denotes a wire connection hole. In this projector 10, two condensing reflecting mirrors 15A and 15B are orthogonally combined around the light source 14, and the direct light of the light source and the reflected light of the two converging reflecting mirrors are taken out as two orthogonal straight lines. Furthermore, lenses 16A and 16B, which are orthogonally combined to expand and emit the light east of the two orthogonal straight lines only in the linear direction, are provided at the light collection outlet.
[0013]
FIG. 4 shows a third embodiment of the present invention. In this embodiment, the display L3 indicating the angular position is a dot-like display, and this display is projected at the intersection of the perpendicular from the angular position T1 at the rear end of the vehicle T and the ground.
[0014]
When using the support device in each of the above embodiments, when the vehicle is moving backward, the display of the angular position T1 of the rear end of the vehicle is projected on the ground and turned around, or the side mirrors M, M on the left and right of the cab are turned on. By using and visually observing the display on the ground, the relationship between the angular position of the left and right rear ends of the vehicle and other objects other than the vehicle is confirmed.
[0015]
In the above embodiment, the means for projecting the display of the projector is not limited to the one described therein. For example, a projected image using an original plate such as a slide on which an image to be displayed is provided. May be projected onto the ground, or a laser may be used as the light source. In particular, when a laser is used as the light source, a projector using a lamp must have a higher output than the illuminance of direct sunlight when used in the daytime, while it is relatively lower than red light. Even if it is an output, an advantage of being visible can be obtained. Further, due to the feature of laser light that does not diffuse the light beam, the installation position is not limited to the lower part of the rear end of the vehicle as in the case of a projector using a lamp, and for example, it can be installed in front of the vehicle.
[0016]
【The invention's effect】
The present invention configured as described above has the following specific effects.
(1) The device does not rely on the machine to perform confirmation as in the case of the backward confirmation support device of the prior art, but it is a device that supports it based on the turning direction or the rear view mirror that is the basic operation of the reverse operation. There is no reason.
(2) Since an electronic device such as the backward confirmation support device of the prior art is not used, it is possible to provide an effective support device at low cost.
(3) Since the display is projected on the ground, it is also possible to detect the groove and cliff behind the vehicle and the parking position display attached to the ground, which was not possible with a rear-confirmation support device that detects obstacles. It becomes possible.
(4) According to the straight line display in the first embodiment, not only the angular position of the left and right rear ends of the vehicle but also the extension line on the back of the vehicle is displayed, so that the driver can easily grasp the sense of distance on the back of the vehicle. Will be a very important display.
(5) According to the orthogonal two-line display in the second embodiment, the relationship with other objects other than the left and right vehicles and the relationship with other objects other than the vehicles behind the vehicle can also be confirmed. It becomes a more effective display.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of use of a backward confirmation support device according to a first embodiment of the present invention.
FIG. 2 is a perspective view of the main part.
FIG. 3 is a perspective view of an essential part showing an example of use of the backward confirmation support device of the present invention in a second embodiment.
FIG. 4 is a perspective view of an essential part showing an example of use of the backward confirmation support device according to the third embodiment of the present invention.
FIG. 5 is a front view of a projector in the first embodiment of the backward confirmation support device of the present invention.
FIG. 6 is a side view of the above.
FIG. 7 is a plan view of the above.
8 is a cross-sectional view taken along line AA in FIG.
9 is a cross-sectional view taken along the line BB in FIG.
FIG. 10 is a front view of a projector in a second embodiment of the backward confirmation support device of the present invention.
11 is a cross-sectional view taken along the line CC in FIG.
[Explanation of symbols]
T Vehicle T1 Corner position L1 Corner position display 1 Floodlight

Claims (1)

  Two condensing reflectors are combined orthogonally around the light source, and the direct light of the light source and the reflected light of the two condensing reflectors are taken out as two orthogonal straight lines, and the two orthogonal straight lines are taken out to the condensing outlet. A pair of projectors composed of two orthogonally combined lenses that radiate and emit light only in the linear direction is provided on the left and right of the rear of the vehicle, and the intersection of the vertical line from the angular position of the rear end of the vehicle with the ground by the projector. Is the intersection of two straight lines, and each straight line projects two straight lines that intersect at right angles toward the outer side in the width direction of the vehicle and the rear side in the full length direction on the ground as indications of the left and right corner positions of the rear end of the vehicle. A vehicle rear-confirmation support device characterized by being capable of lighting.

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