JP2015107754A - Cargo compartment total height marker, cargo vehicle, and cargo compartment total height confirmation method for cargo vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cargo compartment total height marker, a cargo vehicle, and a cargo compartment total height confirmation method for a cargo vehicle, being manufactured at a low cost, allowing a driver to know a total height of a cargo compartment by glancing at a back mirror set on the outside of a car body.SOLUTION: A cargo compartment total height marker 10 is provided at a rear upper end corner part 4 g of a body part 4 of a cargo vehicle 1 equipped with a cab (operation room) 2 in the front and a body (cargo compartment) 4 having a total height h1 which is equal to or larger than a total height h2 of the cab 2 in the rear. The cargo compartment total height marker 10 is configured to be projected as a mark of a total height position of the body 4 on side mirrors (outside car body back mirror) 5A and 5B provided at the cab 2.

Description

  The present invention relates to a cargo compartment height indicator, a cargo vehicle, and a cargo cabin height confirmation method for a cargo vehicle, and more specifically, a cab in front and a cargo bay having an overall height greater than or equal to the overall height of the cab. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo compartment height mark device capable of confirming the overall height of a cargo compartment provided, a cargo vehicle provided with the same, and a cargo compartment height confirmation method for a cargo vehicle.

  A cargo vehicle that transports cargo has a body (loading room) having an overall height that is greater than or equal to the total height of the cab (operating room), and there are many problems with contact accidents at the rear upper corner of the body. The reason why the rear upper corner of the body comes into contact with structures and obstacles at high places is that the driver should look at the rear upper corner of the body, which should be reflected in the side mirror. It is difficult to understand the overall height of the cargo compartment because it cannot be grasped just by looking.

  The reason is that, first, the side mirror provided in the cab of the freight vehicle has a larger mirror curvature than that of a normal passenger car because it needs to reflect a wide area. The shape of the rear upper corner is not visible as a corner. Second, since the side mirror is physically far from the driver, the mirror image reflected on the side mirror is reduced. Third, since the upper end corner of the freight vehicle body is rounded and formed as a preventive measure for preventing contact, it is difficult to recognize the rear upper end corner. Fourthly, in a freight vehicle, the body width is often wider than the cab width, which also makes it difficult to grasp the rear upper corner of the body on the mirror image of the side mirror.

  In this regard, a vehicle corner pole (for example, see Patent Document 1) or a rear end position confirmation device (for example, see Patent Document 2) for confirming the position of the rear end of a normal vehicle, specifically the position of the rear bumper, is provided. Proposed. These devices make it easy to confirm the position of the rear end of the vehicle from the driver's seat and facilitate the reverse operation, but these devices cannot be used as a mark of the total height of the vehicle.

  In addition, as a measure to prevent contact accidents when the cargo vehicle moves backward, a device that displays an indirect field of view, such as a back-eye monitor or an around view monitor, or an alarm sound according to the distance between the cargo vehicle and the structure or obstacle is emitted. Devices etc. have been proposed. Each device helps the driver's own confirmation, but it is difficult to know where to actually confirm. Further, if the operation of the freight vehicle is automated, the freight vehicle will be able to detect surrounding structures and obstacles and control the steering and speed, but this will be costly.

Japanese Patent Laid-Open No. 5-42851 Japanese Patent Laid-Open No. 10-315852

  The present invention has been made in view of the above-described problems, and the problem is that the driver can grasp the overall height of the luggage compartment by looking at the rear-view mirror outside the vehicle body at a glance. It is to provide a cargo space height indicator, a freight vehicle, and a cargo space height confirmation method for a cargo vehicle that can be performed.

  In order to solve the above-mentioned problem, a cargo compartment full height marker according to the present invention includes a driver's cab at the front and a cargo compartment having a total height greater than or equal to the height of the cab at the rear of the cargo compartment of the cargo vehicle. When the vehicle rear-view mirror is provided outside the driver's cab from the driver's seat in the driver's cab, the rear-view mirror outside the vehicle body serves as a mark for the total height position of the luggage compartment. Configured to reflect.

  Here, the rear upper corner of the cargo compartment refers to the cargo compartment when the cab of the cargo vehicle is the front, the cargo compartment is the rear, the ground side is the lower side, and the opposite side is the upper side. Refers to the corners on the top, side, and back. In addition, the cargo compartment height indicator is formed by directly applying a color different from the color of the cargo compartment of the cargo vehicle to the rear upper corner, and a member applied with a color different from the color of the cargo compartment of the cargo vehicle. Those provided at the rear upper corner, those provided with a reflector such as a mirror at the rear upper corner, or those provided with a light emitter such as a lamp at the rear upper corner are used.

  According to this configuration, the cargo compartment height indicator provided at the upper rear corner of the cargo compartment of the cargo vehicle is reflected in the rear mirror outside the vehicle body as a mark of the overall height of the cargo compartment. By looking at the mirror at a glance, you can grasp the total height of the luggage compartment. Thereby, the contact accident with the structure and obstruction in high places, such as a eaves and a signboard, and the cargo compartment of a cargo vehicle can be prevented.

  In addition, when the cargo vehicle moves backward, the rear upper end of the cargo compartment is compared with conventional techniques such as indirect view display such as a back-eye monitor or around view monitor, or the generation of a notification sound according to the distance from the structure or obstacle. Since the configuration is such that a cargo compartment height indicator that serves as a mark of the overall height of the cargo compartment is provided at the corners by color or light, it can be manufactured at low cost.

  In addition, the area in which the freight vehicle is reflected in the rear-view mirror is usually about 1/4 to 1/3 of the width of the rear-view mirror, and is used to indicate that it is the body of the freight vehicle. Since it is an area that is not, it is not an obstacle to driving even if the overall height marker is reflected in that area.

  Further, in the above-described cargo compartment height indicator, if formed so as to protrude from the rear upper corner of the cargo compartment so as not to exceed the overall height and width of the cargo vehicle, the overall height and width of the cargo vehicle are changed. In addition, it is possible to provide a cargo compartment full height mark serving as a mark of the rear upper end corner of the cargo compartment.

  For example, the roundness provided at the rear upper corner may be used as a measure for preventing contact with the cargo compartment of the cargo vehicle. The cargo room full height mark is provided in the space between the rounded upper end corner and the full height position and full width position of the freight vehicle, so that the cargo room does not exceed the full height and full width of the freight vehicle. The overall height mark of the cargo compartment can be protruded from the rear upper corner of the vehicle, and when the driver views the rear-view mirror outside the vehicle body, the rear upper corner of the cargo cabin can be accurately recognized.

  In addition, in the above-described cargo compartment height marker, when formed with an optical transmission body that transmits light of a light source provided on the rear surface of the cargo compartment, the driver only looks at the rear-view mirror outside the vehicle body. The overall height position of the cargo compartment can be grasped, and the overall height position of the cargo compartment can be grasped even at night. In addition, by using the light source originally provided on the rear surface of the cargo room, it is not necessary to provide a separate light source, and it can be manufactured at low cost.

  For example, an optical fiber is preferable as the optical transmission body. This optical fiber is attached to a rear top marker provided on the rear surface of the cargo compartment. And the front-end | tip part of an optical fiber is formed diagonally, and the front-end | tip part protrudes from the rear upper-end corner | angular part of a luggage compartment. As a result, the rear top marker is used as a light source, and the tip of the optical fiber is illuminated toward the front of the freight vehicle so that it becomes a mark for the height of the cargo compartment. Since the optical fiber is made of a material, even if it comes into contact with a structure or an obstacle, the structure or the obstacle is not damaged.

And the cargo vehicle for solving said subject is provided and provided with the above-mentioned cargo compartment full height mark device. According to this configuration, the cargo compartment height indicator allows the driver to grasp the overall height of the cargo compartment just by looking at the rear-view mirror outside the vehicle body, and avoids contact accidents with structures and obstacles. .

  Further, it is only necessary to provide a full height marker at the rear upper corner of the cargo compartment, which can be manufactured at low cost and can be retrofitted to a conventional freight vehicle.

  And the cargo room full height confirmation method for solving the above-mentioned problem is a freight vehicle equipped with a driver's cab in the front and a luggage compartment having a total height greater than or equal to the height of the cab in the rear. In the rear-view mirror provided outside the vehicle body, the overall height indicator of the cargo compartment provided at the upper rear corner of the cargo compartment is visible from the driver's seat in the driver's cab, and the overall height position of the cargo compartment is displayed. It is characterized by making it confirm.

  According to this method, the driver can grasp the total height of the cargo compartment with the cargo compartment height indicator displayed on the rear reflector outside the vehicle body at a glance. It is possible to avoid the rear upper end corner portion from coming into contact with a structure or an obstacle.

  According to the cargo compartment height indicator, the cargo vehicle, and the cargo compartment height confirmation method of the cargo vehicle according to the present invention, the cargo compartment height indicator provided at the upper rear corner of the cargo compartment of the cargo vehicle is a rear mirror outside the vehicle body. Therefore, the driver can grasp the overall height of the cargo compartment simply by looking at the rear-view mirror outside the vehicle. Thereby, the contact accident with a structure, an obstruction, and the cargo compartment of a cargo vehicle can be prevented.

  In addition, since the configuration is such that a cargo compartment height indicator that serves as a mark of the overall height of the cargo compartment by color or light is provided at the rear upper corner of the cargo compartment, it can be manufactured at low cost.

It is the figure which showed the freight vehicle which provided the cargo compartment full height mark device of 1st embodiment which concerns on this invention. It is the enlarged view to which the cargo compartment full height marker shown in FIG. 1 was expanded. It is the figure which showed a mode that the cargo compartment full height marker shown in FIG. 1 was reflected in a vehicle body rear-view mirror. It is a front view of the vehicle which shows the cargo compartment full height mark device of 2nd embodiment which concerns on this invention. It is the figure which showed a mode that the cargo compartment full height marker shown in FIG. 4 was reflected in a vehicle body rear-view mirror. It is a rear view of the vehicle which shows the cargo compartment full height mark device of 3rd embodiment which concerns on this invention. It is a top view of the vehicle which shows the cargo compartment full height mark device shown in FIG. It is the figure which showed a mode that the cargo compartment full height marker shown in FIG. 6 was reflected in a rear-view mirror outside a vehicle body. It is a graph which shows the evaluation experiment result of the total height grasp condition of the cargo compartment of a cargo vehicle.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a cargo compartment height indicator, a freight vehicle, and a cargo compartment full height confirmation method for a cargo vehicle according to embodiments of the present invention will be described with reference to the drawings. The direction from the rear to the front of the freight vehicle in the left-right direction in FIG. 1 is x1, the direction from the front to the rear of the freight vehicle is x2 in the right and left direction, and the vertical downward direction is y1 in the vertical direction. The direction that is vertically upward in the direction is the y2 direction. Further, the members on the mirror image reflected in the side mirrors (the rear-view mirrors outside the vehicle body) of FIGS. 3, 5, and 8 are distinguished by attaching “′” to the reference numerals. In addition, the left side mirror shows the left side of the freight vehicle, the right side mirror shows the right side of the freight vehicle, and members with the same sign on the left and right are provided on both the left and right sides of the freight vehicle It shows that.

First, the structure of a freight vehicle provided with the cargo compartment full height mark device of 1st-3rd embodiment which concerns on this invention is demonstrated, referring FIG.1 and FIG.2. As shown in FIG. 1, a freight vehicle 1 includes a cab (operator's cab) 2 on the front x1 side, a chassis (base) 3 that supports an engine (not shown), and a body (loading room) 4 on the rear x2 side. Is provided.

  The cab 2 is provided with a driver's seat (not shown) where the driver gets on and operates the freight vehicle. The cab 2 is provided with side mirrors (rear mirrors outside the vehicle body) 5A and 5B on the left and right sides, and the driver looks at the mirror image reflected on the side mirrors 5A and 5B while sitting in the driver's seat, and the freight vehicle The back and sides of 1 are confirmed.

  The body 4 is where the cargo is accommodated. The overall height h1 of the body 4 is higher than the overall height h2 of the cab 2. The total height h1 of the body 4 is the total height of the freight vehicle 1, and the full width b1 of the body 4 is the full width of the freight vehicle 1. The full width here is a portion excluding the side mirrors 5A and 5B.

  The body 4 includes a front surface 4a on the front x1 side, side surfaces 4b on both sides (including opposite surfaces not shown), an upper surface 4c on the upper y2 side, a bottom surface 4d on the lower y1 side, and a rear surface 4e on the rear x2 side. Therefore, it is formed in a box shape.

  As shown in FIG. 2, the upper end corner 4f of the corner between the side surface 4b and the upper surface 4c of the body 4 is rounded as a collision prevention measure, and the corners of the side surface 4b, the upper surface 4c, and the back surface 4e are provided. The rear upper corner 4g is also rounded.

  The side mirrors 5 </ b> A and 5 </ b> B are mirrors that reflect the rear x2 side of the freight vehicle 1, and have a large curvature because of the necessity of projecting a wide range including the rear x2 side of the body 4. The curvature is the reciprocal of the radius of curvature. That is, the side mirrors 5A and 5B are formed as convex curved surfaces having a small radius of curvature.

  The radius of curvature of the side mirror of the passenger car is set to 1000R to 1200R, but the radius of curvature of the side mirrors 5A and 5B of the freight vehicle 1 is set to 1000R to 400R. Depending on the size of the body 4 of the freight vehicle 1, 800R to 600R is set. The side mirrors 5A and 5B include a combination of a plurality of mirror surfaces having different curvature radii, for example, a combination of a curvature radius 600R and a curvature radius 400R.

  The above configuration is a common configuration for the first to third embodiments.

  As shown in FIG. 3, the freight vehicle 1 has a problem that it is difficult for the driver to understand the rear upper corner 4 g of the body 4 from the mirror image reflected on the side mirrors 5 </ b> A and 5 </ b> B. The first reason is that the side mirrors 5A and 5B have a mirror surface with a larger curvature than that of a normal passenger car because of the necessity of projecting a wide area, so that the rear image of the body 4 'is reflected on the mirror image reflected on the side mirrors 5A and 5B. The shape of the upper end corner 4g ′ is not visible in the corner. Second, since the side mirrors 5A and 5B are physically far from the driver, the mirror image reflected on the side mirror 5A is particularly small. Thirdly, the upper end corner 4f of the body 4 of the freight vehicle 1 is rounded and formed as a preventive measure for preventing contact. Fourthly, in a freight vehicle, the body width is often wider than the cab width, which also makes it difficult to grasp the rear upper corner of the body on the mirror image of the side mirror. For the above reasons, the shape of the rear upper end corner 4g ′ of the body 4 ′ on the mirror image reflected on the side mirrors 5A and 5B does not appear to be a corner, and the driver can see the rear upper end corner 4g on the mirror image of the side mirrors 5A and 5B. It's harder to recognize.

  Therefore, the rear upper end corner emphasis marker (loading chamber full height mark) 10 according to the first embodiment of the present invention is provided at the rear upper end corner 4g of the body 4 as shown in FIG. 5A and 5B are configured to be reflected as marks of the entire height of the body 4. The rear upper end corner emphasis marker 10 is formed by applying a color different from the color of the body 4 to the rear upper end corner 4g of the body 4.

  As shown in FIG. 4, the rear upper end corner emphasis marker 20 of the second embodiment according to the present invention is the rear upper end corner emphasis marker 20 of the second embodiment. Further, it is formed so as to protrude from the rear upper corner portion 4g of the body 4 so as not to exceed the full width b1.

  The rear upper end corner emphasis marker 20 is formed by sticking a rubber plate of a color different from the color of the body 4 of the freight vehicle 1 on the back surface 4e of the body 4 so as to protrude from the rear upper end corner 4g of the body 4. It is formed.

  As described above, the rear upper corner portion 4g of the body 4 of the cargo vehicle 1 is provided with a roundness for preventing contact. Thereafter, the upper end corner emphasis marker 20 is formed so as to protrude into the space A using the space A generated by providing the roundness.

  Next, the rear upper end corner emphasis marker 30 according to the third embodiment of the present invention will be described with reference to FIGS. In addition, the white arrow shown in FIG. 7 shows light.

  As shown in FIG. 6, the rear upper end corner emphasis marker 30 of the third embodiment transmits light of a rear top marker (light source; also called vehicle height light) 6 provided on the back surface 4e of the body 4. An optical fiber bundle (optical transmission body) 31 is provided.

  The body 4 of the freight vehicle 1 is provided with a rear top marker 6 on the back surface 4e of the body 4 in order to inform the vehicle running on the rear x2 side of the freight vehicle 1 of the height of the body 4. The rear top marker 6 is formed by covering a light-emitting diode (not shown) with a semitransparent cover 6a.

  As shown in FIG. 7, the optical fiber bundle 31 is formed by bundling a plurality of optical fibers 31a, and the light receiving portion 31b is brought into contact with the rear top marker 6 so as to exceed the total height h1 and the total width b1 of the freight vehicle 1. The light emitting part 31c is configured to protrude from the rear upper end corner part 4g so as not to exist.

  The light receiving unit 31b contacts the cover 6a of the rear top marker 6 so that all the optical fibers 31a can transmit light emitted from the rear top marker 6, and each optical fiber 31a contacts the surface of the cover 6a. Formed as follows. The light emitting unit 31c is formed obliquely so that the light transmitted by the optical fiber 31a is emitted only to the front x1 side.

  The optical fiber bundle 31 is attached to the back surface 4 e of the body 4 by a fixing stay (fixing tool) 32.

  In addition, a masking tape (shielding member) 33 is provided on the rear x2 side of the optical fiber bundle 31 and on the light emitting portion 31c side on which the light from the rear top marker 6 is not desired to be transmitted. Thereby, in the part which overlaps with the rear top marker 6 of the optical fiber bundle 31, the light which the rear top marker 6 transmits is transmitted to the back x2 side, and the role of the rear top marker 6 is not obstructed. In a portion of the bundle 31 that does not overlap the rear top marker 6, the light emitted from the rear top marker 6 is shielded and is not transmitted to the rear x 2 side. In particular, when the upper end corner emphasis marker 30 is provided only on the left side or only on the right side of the back surface 4e of the body 4, the left and right rear top markers 6 can be seen in a balanced manner by shielding excess light.

In addition, the masking tape 33 is preferably the same color as the body 4. By using the same color as the body 4, the rear upper end corner emphasis marker 30 can be made difficult to recognize from the following vehicle, and the design can be improved.

  In addition, a prism body that emits light toward the front x1 side by dispersing or refracting the light transmitted by the optical fiber 31a is formed on the obliquely formed portion of the light emitting portion 31c of the optical fiber bundle 31 (light dispersion and refraction). Member) 34 is provided. With this prism body 34, the light transmitted by the optical fiber bundle 31 can be emitted toward the front x1 side, and the light can be emitted in a dispersed manner.

  A method for confirming the overall height of the cargo compartment of the freight vehicle 1 provided with the above first to third rear upper corner emphasis markers 10, 20, and 30 will be described. As shown in FIGS. 3, 5, and 8, when the driver views the side mirrors 5 </ b> A and 5 </ b> B from the driver's seat in the cab 2, the rear upper corner emphasis markers 10, 20, and 30 are Reflected on mirrors 5A and 5B. The rear upper end corner emphasis markers 10 ′, 20 ′, and 30 ′ on the mirror images of the side mirrors 5 </ b> A and 5 </ b> B are visually recognized, and the rear upper end corner 4 g ′ of the body 4 is confirmed. The driver grasps the total height position of the body 4 by checking the rear upper end corner 4g ′. Then, the structure or obstacle at a high place is compared with the rear upper corner portion 4g ′ on the mirror image so that the rear upper corner portion 4g ′ on the mirror image does not contact the structure or obstacle. Retreat.

  According to the rear upper end corner emphasis markers 10, 20, and 30 of the first to third embodiments, the freight vehicle 1 provided with the same, and the cargo room total height confirmation method of the freight vehicle 1, FIG. 5 and 8, the rear upper end corner emphasis markers 10, 20, and 30 are reflected on the side mirrors 5A and 5B, and the rear upper end corner of the body 4 'on the mirror image of the side mirrors 5A and 5B. Since 4g ′ is shown, the driver can grasp the total height position of the body 4 only by looking at the side mirrors 5A and 5B. Thereby, the contact accident with the structure and obstruction in high places, such as a eaves and a signboard, and the body 4 of the freight vehicle 1 can be prevented.

  In addition, when the cargo vehicle 1 moves backward, it is the first implementation compared to the conventional techniques such as indirect view display such as back-eye monitor and around view monitor, or generation of notification sound according to the distance from the structure or obstacle. In the second embodiment, the color is simply applied to the rear upper corner 4g of the body 4, and in the second embodiment, the rubber plate is simply applied to the rear upper corner 4g of the body 4, the third embodiment. In the embodiment, since the optical fiber bundle 31 for transmitting the light of the rear top marker 6 is simply provided, the optical fiber bundle 31 can be manufactured at low cost and can be easily attached to a conventional freight vehicle.

  In addition, the area in which the freight vehicle 1 is reflected on the side mirrors 5A and 5B is usually about ¼ to ３ of the width of the side mirrors 5A and 5B, except that it indicates the body 4 of the freight vehicle 1. Therefore, even if the rear upper corner corner emphasis markers 10, 20, and 30 are reflected in the area, it does not interfere with driving.

  Further, by providing the rear upper end corner emphasis markers 10, 20, and 30, the total height position of the body 4 can be easily grasped, so that the roundness of the upper end corner 4f of the body 4 can be eliminated, or the side mirror 5A. And since the change of reducing the curvature of 5B becomes unnecessary, since it can apply to the freight vehicle 1 of a prior art, a specification is not changed. Therefore, operability does not change.

  Further, according to the second embodiment, the rear upper end corner emphasis marker 20 can be protruded from the rear upper end corner 4g of the body 4 without exceeding the total height h1 and the entire width b1 of the freight vehicle 1. As shown in FIG. 5, when the driver looks at the side mirrors 5A and 5B, the rear upper end corner 4g ′ of the body 4 ′ can be more accurately visually recognized on the mirror image. Moreover, even if it contacts with a structure and an obstacle, since a rubber plate deform | transforms etc., it can avoid damaging a structure and an obstacle.

  Further, according to the third embodiment, in the daytime, the rear upper end corner emphasis marker 30 protruding from the rear upper end corner 4g of the body 4 allows the driver to perform the side mirror 5A in the daytime as in the second embodiment. And 5B, the rear upper end corner 4g ′ of the body 4 ′ can be accurately recognized. Also, as shown in FIG. 8, at night, light using the rear top marker 6 as a light source is reflected on the side mirrors 5A and 5B, and the rear upper end of the body 4 'on the mirror image is reflected by the rear upper end corner emphasis marker 30'. The corner 4g ′ can be visually recognized accurately. In addition, since the optical fiber bundle 31 made of a material is protruded from the rear upper end corner 4g, even if it comes into contact with the structure or obstacle, the structure or obstacle is not damaged.

  Next, using a mark similar to the rear upper end corner emphasis markers 10, 20, and 30 of the first to third embodiments described above, the case where there is no mark indicating the total height position of the body and the total height position of the body are determined. An experimental result of measuring whether there is a deviation between the actual height position of the body and the height position of the body recognized by the driver when there is a mark to be shown will be described with reference to FIG.

  In this experiment, a measuring instrument that gradually descends from a position higher than the total height of the body to the middle thereof was provided between the cab and the body. Specifically, the driver looks at the side mirror, and stops the descent of the measuring instrument when the position of the measuring instrument reflected on the side mirror reaches the rear upper corner of the body, that is, the position determined to be the total height position. The error between the measurement position of the measuring instrument at that time and the correct position indicating the correct total height position is measured. Further, as a mark indicating the total height position of the body, a mark protruding about 10 cm from the rear upper end corner of the body was used.

  Condition A in FIG. 9 is a result of measurement in the case where there is no mark indicating the total height position of the body. Condition B is the result of measurement when there is a mark indicating the total height position of the body. The condition C is a result of measurement after the condition B is performed, again when there is no mark indicating the total height position of the body.

  Note that the error between the measurement position and the correct position of the measurement device as a result of this experiment is an error at the position where the measurement device is provided. Therefore, when this error is applied to the actual backward operation, the length between the total height position of the body and the structure or obstacle is about three times the error. For example, if the error in the experiment is +100 mm, the length between the actual height position of the actual body and the structure or obstacle is about 300 mm, and if the error in the experiment is −100 mm, the actual height of the actual body The position is about 300 mm higher than the structure and the obstacle, and the body and the structure and the obstacle come into contact with each other.

  In the case of condition A, since there is no mark for the overall height of the body of the freight vehicle and the rear upper corner of the body is difficult to understand, the error between the measurement position of the measuring instrument and the correct position is frequently negative. On the other hand, in the condition B, the error between the measurement position of the measuring instrument and the correct position did not become a negative value.

  In the case of condition C, the error between the measurement position of the measuring instrument and the correct answer position becomes a negative value less than in condition A, but the variation is larger than the variation in condition B. Even if condition B is performed first and a certain amount of reference is given, the error between the measurement position of the measuring instrument and the correct answer position is a negative value. It becomes the basis to think that it is necessary.

From the experimental results shown in FIG. 9, it can be seen that if there is a mark for the total height position of the body, the driver can grasp the total height position of the body by looking at the side mirror. Therefore, in the freight vehicle 1 provided with the rear upper end corner emphasis markers 10, 20, and 30 of the first to third embodiments, the rear upper end corner emphasis markers 10, 20, and 30 are provided on the body 4. Since it is provided at the rear upper corner 4g, it serves as a mark for the entire height of the body 4. As a result, it is possible to correct the driver's recognition shift every time the reverse operation is performed, and thus it is possible to avoid the rear upper corner portion 4g of the body 4 from coming into contact with a structure or an obstacle.

  In the first to third embodiments, the example in which the rear upper end corner emphasis markers 10, 20, and 30 are provided on both the left and right rear upper end corners 4g of the body 4 has been described. The invention is not limited to this, and for example, the rear upper corner corner emphasis markers 10, 20, and 30 may be provided only on either the left or right side.

  In the first embodiment described above, the rear upper corner emphasis marker 10 is formed by applying a color different from the color of the body 4, but preferably by applying a luminescent paint that emits light at night. Can be used at night. Moreover, this invention is not limited to apply | coating a coating material. For example, a rubber plate or the like having a color different from the color of the body 4 may be attached to the rear upper corner 4g of the body 4. Further, a reflecting mirror or a light emitter may be attached to the rear upper corner portion 4g of the body 4.

  Moreover, in said 2nd embodiment, although provided the rubber plate of the color different from the color of the body 4 so that it may protrude from the rear upper-end corner | angular part 4g, this invention is not limited to this. For example, a reflecting mirror facing the front x1 side may be provided so as to protrude from the rear upper end corner 4g so that a light source such as sunlight or a streetlight is reflected and reflected on the side mirrors 5A and 5B. Moreover, you may provide the light-emitting body which radiates | emits light to the front x1 side so that it may protrude from the rear upper-end corner | angular part 4g.

  Further, the method of attaching the optical fiber bundle 31 for transmitting the light of the rear top marker 6 of the third embodiment, the method of emitting light toward the front x1, etc. are examples, and the present invention is limited to this. Not. In addition, light can be transmitted from a light emitter such as a brake lamp provided on the back surface 4e of the body 4 other than the rear top marker 6.

  In the third embodiment, the masking tape 33 is described as having the same color as the body 4, but the rear x2 side is the same color as the body 4, and the front x1 side is different from the color of the body 4. Then, even when the rear top marker 6 is not lit without deteriorating the design, it is possible to use the color on the front x1 side of the masking tape 33 as a mark for the entire height position of the body 4.

  The cargo compartment height indicator of the present invention can be manufactured at a low cost, and the driver can grasp the overall height of the cargo compartment simply by looking at the rear-view mirror outside the vehicle body. The present invention can be used for a freight vehicle such as a truck provided with a cabin and a luggage compartment having a height higher than the height of the cab in the rear.

1 Cargo vehicle 2 Cab (cab)
4 Body (loading room)
4a Front surface 4b Side surface 4c Top surface 4d Bottom surface 4e Back surface 4f Upper end corner 4g Rear upper end corner 5a, 5b Side mirror (external rear view mirror)
6 Rear top marker (car light)
10, 20, 30 Rear upper edge corner highlighting marker (loading room height marker)
31 Optical fiber bundle (optical transmission body)
31a Optical fiber 31b Light receiving part 31c Light emitting part 33 Masking tape (shielding member)
34 Prism body (light dispersion / refractive member)

Claims (5)

  Provided at the rear upper corner of the cargo compartment of a cargo vehicle having a cab in the front and a luggage compartment having a height that is greater than or equal to the height of the cab in the rear, from the driver seat in the cab to the cab A cargo compartment full height marker, which is displayed on the outside rear view mirror as a mark of the full height position of the cargo compartment when viewed from outside the rear view mirror provided outside.   2. The cargo compartment height indicator according to claim 1, wherein the cargo compartment height indicator is formed so as to protrude from the rear upper corner of the cargo compartment so as not to exceed the overall height and width of the cargo vehicle.   3. The cargo compartment full height marker according to claim 1, wherein the cargo compartment full height mark device is formed of an optical transmission body that transmits light of a light source provided on a rear surface of the cargo compartment.   A cargo vehicle comprising the cargo compartment full height mark according to any one of claims 1 to 3.   In a freight vehicle including a driver's cab in the front and a luggage compartment having a height that is greater than or equal to the height of the cab in the rear, a cargo compartment height indicator provided at a rear upper corner of the cargo compartment is provided in the cab. A method for confirming the overall height of a cargo compartment of a cargo vehicle, wherein the overall height position of the cargo compartment is confirmed by projecting to a rear-view mirror provided outside the operator compartment so as to be visible from the driver's seat.

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