JP6966267B2 - vehicle - Google Patents

Description

The present invention relates to a pattern projection device that is attached to a vehicle and projects a predetermined pattern from the vehicle onto the ground.

In the past, work such as transporting cargo by a vehicle such as a forklift was sometimes carried out in a dim warehouse or even outdoors at night when it was dark. Such a vehicle may move backward or change direction when moving luggage, and there is a risk of an accident in which a worker working nearby may come into contact with the vehicle if it is inadvertently approached. .. In order to prevent such an accident, a lighting device that illuminates the ground in a line shape is attached to the vehicle, and the ground that is separated from the rear of the vehicle by a predetermined distance is illuminated in a line shape. It sometimes called attention to other workers.

As described above, as a technique of being attached to a vehicle and projecting light from the vehicle to the ground, a technique of mounting on the vehicle and projecting characters and figures on a road surface or the like is provided (see Patent Document 1). Further, a technique for irradiating a road surface with a mark as a reference for cornering from a vehicle is provided (see Patent Document 2).

FIG. 1 is a diagram illustrating an example of a conventional lighting device that illuminates the ground in a line shape. FIG. 1A is a perspective view of the lighting device, and FIG. 1B is an exploded perspective view of the lighting device. The lighting device includes a plurality of light emitting diodes 12 arranged in a row on the upper surface of the substrate 11, a lens 13 provided directly above the plurality of light emitting diodes 12, and a lens cover 14 surrounding the lens 13 to a predetermined height. The substrate 11, the plurality of light emitting diodes 12, the lens 13, and the lens cover 14 are housed in a housing 15 in which the heat radiation fins 16 are formed, and the opening of the housing 15 is sealed by a transparent front panel 17.

Here, a vehicle such as a forklift may not only move backward but also turn sideways. In order to draw attention to the operator when traveling to the side of the vehicle, lighting devices that illuminate the ground in a line are installed on the left and right sides of the vehicle, respectively, and a predetermined distance from the side of the vehicle to the left and right. Sometimes the ground just far away was illuminated in a line.

Utility Model Registration No. 3193187 Japanese Patent No. 39007030

However, in order to illuminate the ground in a line at a predetermined distance from the vehicle on the rear and left and right sides of the vehicle, the lighting devices that illuminate the ground in a line are separate on the rear and left and right sides, respectively. I needed three of them. For this reason, the cost for procuring the lighting device has increased, and the burden for installing and maintaining the lighting device on the vehicle has also increased. In addition, it was sometimes desired to project a desired pattern from the vehicle onto the ground in order to draw the attention of the operator.

The present invention has been proposed in view of the above circumstances, and provides a pattern projection device capable of projecting a pattern that surrounds a vehicle from the rear and left and right sides or a desired pattern on the ground. With the goal.

In order to solve the above-mentioned problems, the pattern projection device according to the present application is mounted on a vehicle, a plurality of light emitting diodes mounted on a substrate and an upper surface of the substrate according to a predetermined pattern, and directly above the plurality of light emitting diodes. A lens that is arranged and extends according to a predetermined pattern and a lens cover that surrounds the lens to a predetermined height on the upper surface of the substrate and extends along a predetermined pattern, and collects light emitted from a plurality of light emitting diodes by the lens. However, a predetermined pattern is projected from the vehicle onto the ground as substantially parallel light by the lens cover.

The predetermined pattern is substantially U-shaped and may surround the sides and rear of the vehicle. The predetermined pattern is substantially O-shaped and may surround the front, sides and rear of the vehicle.

It may further include a housing that internally houses the substrate, a plurality of light emitting diodes, and a lens cover, and a front panel that is capable of transmitting light covering the upper surface of the housing.

According to the present invention, it is possible to project a pattern that surrounds the vehicle from the rear and left and right sides or a desired pattern from the vehicle to the ground by a single pattern projection device without using three lighting devices. can. Further, according to the present invention, since a single pattern projection device is sufficient, the cost for procuring the device is reduced, and the burden for installing and maintaining the device on the vehicle is reduced.

It is a figure explaining an example of the illuminating device which illuminates the ground in a line shape of the conventional. It is a figure explaining the pattern projection apparatus of this embodiment. It is a perspective view which shows the vehicle which attached the pattern projection apparatus of this embodiment. It is a perspective view which shows the example of the lens corresponding to a pattern.

Hereinafter, the pattern projection apparatus according to the present embodiment will be described in detail with reference to the drawings. FIG. 2 is a diagram illustrating the pattern projection device of the present embodiment. FIG. 2A is a perspective view of the pattern projection device of the present embodiment, and FIG. 2B is an exploded perspective view of the pattern projection device of the present embodiment.

The pattern projection device 10 of the present embodiment includes a substrate 11 having a flat upper surface, a plurality of light emitting diodes (LEDs) 12 arranged on the upper surface of the substrate 11 along a substantially U-shaped pattern, and a plurality of light emitting diodes (LEDs) 12. A lens 13 provided directly above the diode 12 and extending along the pattern, and a lens cover 14 extending according to the pattern so as to surround the plurality of light emitting diodes 12 and the lens 13 and formed from the upper surface of the substrate 11 to a predetermined height. have.

The substrate 11 has a substantially U-shape composed of a first side 11a, a second side 11b, and a third side 11c according to a substantially U-shaped pattern, and has a first side 11a, a second side 11b, and a third side 11c. A plurality of light emitting diodes 12 are arranged at substantially predetermined intervals. The substrate 11 may be made of a metal having high thermal conductivity, such as aluminum, so that the heat generated by the plurality of light emitting diodes 12 is dissipated.

The plurality of light emitting diodes 12 are arranged on the upper surface of the substrate 11 at substantially equal intervals along a pattern. As the plurality of light emitting diodes 12, those that emit light of a predetermined color such as red, green, and blue can be used. This color can be selected according to the color of the projected pattern.

The lens 13 is provided directly above the plurality of light emitting diodes 12 arranged on the upper surface of the substrate 11, and has a shape extending along the pattern. The lens 13 has a substantially U-shape composed of a first side 13a, a second side 13b, and a third side 13c according to a substantially U-shaped pattern, and the first side 13a, the second side 13b, and the third side 13c have a substantially U-shape. It corresponds to the first side 11a, the second side 11b, and the third side 11c of the substrate 11, respectively. The lens 13 collects and emits the light emitted from the plurality of light emitting diodes 12. The lens 13 may be a semicircular lens having a substantially semicircular cross section and having a flat surface substantially parallel to the upper surface of the substrate 11. The lens 13 may be made of glass or may be made of a resin such as polymethyl methacrylate (PMMA).

The lens cover 14 is on the upper surface of the substrate 11, rises to a predetermined height on the upper surface of the substrate 11, surrounds the lens 13 along a predetermined pattern, opens only the upper side, and only substantially parallel light traveling upward from the lens 13. Is passing through and blocking other light. The lens cover 14 may be formed of, for example, a resin having a black color so as to be able to absorb light.

Further, the pattern projection device 10 of the present embodiment has a housing 15, heat radiation fins 16 protruding from the lower part of the housing 15, and a transparent front panel 17 covering the upper part of the housing 15.

The housing 15 internally houses a substrate 11, a plurality of light emitting diodes 12, a lens 13, and a lens cover 14. The housing 15 is attached so that the substrate 11 is in contact with the bottom surface of the housing 15 so that the heat radiation fins 16 are formed at the lower portion and the heat of the substrate 11 is dissipated by the heat dissipation fins 16. The housing 15 and the heat radiating fins 16 may be made of a metal having high thermal conductivity, such as aluminum, so that the heat of the substrate 11 is dissipated.

The front panel 17 seals the opening of the housing 15 so as to cover the substrate 11, the plurality of light emitting diodes 12, the lens 13, and the lens cover 14 housed inside the housing 15. The front panel 17 is a transparent member that transmits light emitted from the inside of the housing 15 and prevents dust and water from entering the inside of the housing 15. A resin such as glass or PMMA can be used for the front panel 17.

In the pattern projection device 10 of the present embodiment, an example in which the housing 15 and the front panel 17 have a substantially rectangular shape is shown, but the housing 15 and the front panel 17 have a plurality of light emitting diodes 12, a lens 13, and a lens. It can also be formed into a substantially U-shape so as to follow the pattern of the cover 14. By shaping the housing 15 and the front panel 17 so as to follow the pattern, the overall size and weight of the pattern projection device 10 can be reduced.

On the other hand, in the present embodiment, the substrate 11 is substantially U-shaped so as to follow the pattern, but the substrate 11 may have another shape such as a rectangle as long as it includes the pattern. By making the substrate 11 rectangular or the like, the step of processing the substrate into a shape that follows the pattern becomes unnecessary, and the manufacturing becomes easy.

FIG. 3 is a perspective view showing a vehicle to which the pattern projection device of the present embodiment is attached. In the figure, the forklift vehicle 100 is shown. The vehicle 100 has a main body 101, wheels 102, an operation unit 103, a seat 104, a fork 105, and a head guard 106. Of these, the head guard 106 is supported by the main body 101 by a plurality of columns and is provided substantially directly above the seat 104 to protect the driver from falling of luggage.

The upper surface of the head guard 106 has a predetermined height from the ground and provides a substantially horizontal flat surface. The pattern projection device 10 of the present embodiment is attached to the head guard 106 so that the front panel 17 faces downward and faces the head guard 106 with a predetermined height from the upper surface. Here, the pattern projection device 10 is attached to the head guard at an appropriate position and at an appropriate height by the support column 107 so that the emitted light is not blocked by the head guard 106. Further, power is supplied to the pattern projection device 10 from the main body 101 of the vehicle 100.

As shown in FIG. 3, a pattern projection device 10 attached to the vehicle 100 projects a substantially U-shaped pattern 200 that surrounds the rear and left and right sides of the vehicle 100 on the ground. This substantially U-shaped pattern corresponds to the shape of the lens 13 of the pattern projection device 10. That is, the first side 201, the second side 202, and the third side 203 of the substantially U-shaped pattern projected on the ground are the first side 13a, the second side 13b, and the third side of the lens 13 of the pattern projection device 10. It corresponds to each side 13c.

By attaching the pattern projection device 10 of the present embodiment to the vehicle 100, it is possible to project a pattern surrounding the vehicle 100 from the vehicle 100. Therefore, when driving the vehicle 100 in a dim warehouse or driving the vehicle 100 outdoors at night when it is dark, it is possible to draw attention to the operator by projecting a pattern from the vehicle 100 so as to surround the vehicle 100. can. Therefore, it is possible to prevent an accident in which an operator inadvertently approaches the vehicle 100 and comes into contact with the vehicle 100.

FIG. 4 is a perspective view showing an example of a lens corresponding to the pattern. FIG. 4A shows the shape of the lens of the pattern projection device 10 of the present embodiment that projects the pattern of the substantially U-shape shown in FIG. In the case of other patterns as well, the lens 13 is formed so as to correspond to the pattern, a plurality of light emitting diodes 12 are appropriately arranged on the substrate 11 according to the pattern, and the lens 13 is surrounded by the lens cover 14 to form the pattern. It emits substantially parallel light and can project a pattern on the ground. The following shows examples of lens shapes corresponding to several patterns.

FIG. 4B shows a lens having a shape corresponding to a substantially O-shaped pattern. The substantially O-shaped pattern can project a substantially O-shaped pattern from the vehicle 100 so as to surround the vehicle 100 from all directions of the front, the rear, and the left and right sides. Therefore, the operator can easily know the approach of the vehicle 100 from any direction with respect to the vehicle 100.

FIG. 4C shows a lens having a shape corresponding to the arrow-shaped pattern. The arrow-shaped pattern can be projected from the vehicle 100 onto the ground behind the vehicle 100, for example, to foretell that the vehicle 100 is moving backward. The arrow-shaped pattern can explicitly indicate the traveling direction of the vehicle 100.

FIG. 4D shows a lens having a shape corresponding to the x-shaped pattern. The x-shaped pattern can be projected, for example, from the vehicle 100 onto the ground behind the vehicle 100 to indicate that entry is prohibited behind the vehicle 100. The x-shaped pattern can explicitly indicate that the area is off limits.

FIG. 4 (e) shows a lens corresponding to a substantially semicircular radiation pattern. The substantially semi-circular radiation pattern can be displayed, for example, on the ground behind the vehicle 100 from the vehicle 100 and projected to indicate the range in which the vehicle 100 may move. The substantially semi-circular radiation pattern can explicitly indicate the range in which the vehicle 100 may move.

FIG. 4 (f) shows a lens corresponding to a substantially V-shaped radiation pattern. The substantially V-shaped radiation pattern can be displayed, for example, from the vehicle 100 to the ground behind the vehicle 100 and projected to outline the range in which the vehicle 100 may move. The substantially V-shaped radiation pattern can roughly indicate the range in which the vehicle 100 may move.

In the pattern projection device 10 of the present embodiment, a desired pattern can be projected by using a lens 13 formed in a desired pattern, not limited to the lens 13 having the pattern shown in FIG. Therefore, the pattern projection device 10 of the present embodiment can be easily configured according to a desired pattern.

10 Pattern projection device 11 Board 12 Light emitting diode 13 Lens 14 Lens cover 15 Housing 16 Heat dissipation fin 17 Front panel

Claims (4)

A vehicle that includes a pattern projection device
The pattern projection device is
With the board
A plurality of light emitting diodes mounted on the upper surface of the substrate according to a predetermined pattern,
A lens arranged directly above the plurality of light emitting diodes and extending according to the predetermined pattern,
A lens cover that surrounds the lens to a predetermined height on the upper surface of the substrate and extends along the predetermined pattern.
Including
The pattern projection device collects the light emitted from the plurality of light emitting diodes by the lens and projects the predetermined pattern from the vehicle onto the surrounding ground as substantially parallel light by the lens cover. Mounted on the vehicle facing the ground,
The vehicle includes a forklift, wherein the pattern projection apparatus, both the car mounted on the overhead guard of the vehicle. The vehicle according to claim 1, wherein in the pattern projection device, the predetermined pattern is substantially U-shaped and surrounds the sides and the rear of the vehicle. The vehicle according to claim 1, wherein in the pattern projection device, the predetermined pattern is substantially O-shaped and surrounds the front, side, and rear of the vehicle. Claims 1 to 3 further include a housing for internally storing the substrate, the plurality of light emitting diodes, and the lens cover, and a front panel capable of transmitting light covering the upper surface of the housing. The vehicle according to any one of the above.

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