JP2016117359A - Activation state display device for brake of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a pedestrian transversely passing in front of an automobile to clearly recognize that the driver of the automobile is pressing a brake.SOLUTION: An activation state display device of a brake of an automobile comprises a brake activation detection switch Bp and a light emitting device 2. The brake activation detection switch Bp activates when a brake pedal 3 is pressed and outputs a brake activation signal to the light emitting device 2. The light emitting device 2 is installed on a lower front surface of a vehicle body 1 of the automobile and emits diffusion light across a fixed range in a front part of the vehicle body upon receiving an input of the brake activation signal, and the diffusion light forms a light projection image Pi on a road in the range of the shadow of the vehicle body 1 as a caution sign. A pedestrian can confirm that the brake is operated by seeing the light projection image Pi displayed in the shadow 1a of the vehicle body 1 of the automobile and safely get across a crosswalk.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method and apparatus for displaying an operating state of a brake of an automobile.

  Brake lamps for automobiles are installed at the rear of the vehicle body to avoid rear-end collisions. The red emission color is used to call attention to the following car. Usually, the brake lamp is shared with the backlight, but the red light-emitting lamp is used for the backlight in order to display a warning to the subsequent car or pedestrian. In this way, the car is provided with a lamp for caution at the rear.

  However, for example, when a pedestrian tries to cross a road in front of a car in a place where there is no traffic signal, the car stops consciously of the pedestrian, or when the car is stopped Just looking at the car doesn't tell if the car will remain stationary. Even if the car is stopped, the driver of the car may start carelessly without noticing the pedestrian, and if the pedestrian is late noticed, there is a risk of a serious accident.

  In order to solve such a problem, in Patent Document 1, it is necessary to warn a pedestrian by a method other than a horn, and a pedestrian is projected by projecting a laser beam on the road surface ahead of the pedestrian. A method is described in which a pedestrian is informed that a car is moving without causing discomfort.

  In short, the method described in Patent Literature 1 illuminates the front road surface of a pedestrian in which an object is present in the detection area of the front sensor provided in the car, and warns the pedestrian that the car is approaching. That's it. However, the laser beam can be projected to brightly illuminate the front road surface of the pedestrian only at night, and it is difficult to alert the pedestrian even if the laser beam is projected during the daytime when the surroundings are bright.

  In addition, even if the front road surface of the pedestrian can be brightly illuminated with a laser beam during nighttime use, the laser beam projection is only irradiated instead of the horn, and the car is stopped. However, it cannot be used to determine whether the vehicle is in a state where it can start at any time, or whether there is a risk of sudden start.

JP 2013-124092 A

  The problem to be solved is that the laser beam can be projected in front of the car to brightly illuminate the pedestrian's front road surface is not limited to dark roads at night. For pedestrians trying to cross, it is impossible to judge whether the driver of the car is stepping on the brake and whether there is a risk of sudden start.

  The present invention projects diffused light over a certain range immediately below the vehicle body of a car that is braked and decelerated while braking or running while braking, and a projected image of the light in the shadow of the car on the road By forming and making a pedestrian visually observe the projected image of light, it is possible to recognize that the driver of the automobile is stepping on the brake and to pass safely across the front of the automobile.

  According to the present invention, in order to form a projected image of light in the shadow of the vehicle body just below the front body of the vehicle, the pedestrian can determine whether the vehicle is stopped with the brake applied from the projected image. Can be easily determined, and the front of the automobile can be safely traversed while viewing the projected image of the light.

  In addition, according to the present invention, a projected image of light is formed in the shadow of the vehicle body directly under the vehicle body at the front of the vehicle, so it is not only at night but also in the daytime and when the sun is directly above the vehicle. However, there is no problem in the formation of the projected image of light, and even if the road surface that is the projection surface is uneven, there is no problem in the formation of the projected image of light. Rather, the stronger the sunlight, the clearer the light and dark, and the projected image of the light radiated in the shadow of the car body can be expressed more clearly. The projected image of light may include characters, figures, patterns, symbols, and the like.

  Furthermore, according to the present invention, since the brake state of the following vehicle is displayed on the rear mirror of the vehicle, it is possible to detect whether there is a risk of a rear-end collision by the subsequent vehicle.

  It should be noted that when the pedestrian tries to cross the front of the car, paying attention to where the car looks, the pedestrian first recognizes the size of the car and then It is a reaction that everyone is convinced to see below the center.

  In other words, if you look at the shadow part directly under the car body, you will inevitably recognize the projected image of the laser light that is emitted into the shadow of the car body. Whether the vehicle is parked and whether the vehicle is stopped, and for automatic vehicles, the change lever is inserted into the parking range, reverse range, neutral range, or drive range and the brake is applied. If it does, information which can predict a driver's action can be provided to a pedestrian.

(A) is a figure which shows one Example of this invention. (B) is a figure which shows the example of the projection image of the light formed as a warning sign on the road in the range of the shadow of a vehicle body. It is an electrical wiring diagram of the brake operation detection switch Bp. It is a perspective view which shows the projection image of the light formed in the shadow of a motor vehicle. It is a figure which shows the other Example of this invention. It is a figure which shows the example of the projection image of the light which the subsequent vehicle projected on the room mirror of the motor vehicle.

  The present invention emits diffused light over a certain range of the front part of the vehicle body from a light emitting device installed on the underside of the front part of the vehicle body when the brake pedal is depressed, and projects light as a warning sign on the road within the shadow of the vehicle body It forms an image.

  A specific configuration will be described in detail with reference to the drawings. Fig.1 (a) is a figure which shows the basic structure of this invention. Referring to FIG. 1A, the brake operating state display device for a vehicle according to the present invention includes a brake operation detection switch Bp and a light emitting device 2. The brake operation detection switch Bp is operated by depressing the brake pedal 3, and outputs a brake operation signal to the light emitting device 2. The light emitting device 2 is installed on the lower surface of the front portion of the vehicle body 1 of the automobile, and inputs a brake operation signal. In response to this, diffuse light is emitted over a certain range of the front of the vehicle body, and a projected image Pi of light is formed as a warning sign on the road within the shadow 1a of the vehicle body 1 as shown in FIG. FIG. 2 shows an electrical wiring diagram of the brake operation detection switch Bp.

  In this embodiment, the brake operation detection switch Bp is shown as a normally-open upper contact connected in series to the power source 4 of the light emitting device 2, but in short, the brake operation detection switch Bp emits light with a brake operation signal as an input. The brake operation signal is output to the device 2 and is not limited to the electrical wiring shown in FIG.

  When the brake pedal 3 is depressed and the brake is applied, in the example of FIG. 2, the brake operation detection switch Bp is dropped to close the contact, power is supplied to the light emitting device 2, and a warning sign is directed directly from the light emitting device 2. A projection image Pi (Projection image) of light is emitted.

  The projected image Pi of light irradiated directly from the light emitting device 2 as a warning sign is, for example, a projected image by laser light. The light emitting device 2 emits a laser beam when the power is turned on and is diffused to a lens diffusion plate (not shown). To do. The example of FIG. 1B shows an example in which a projection image of light that is oblong elliptical with respect to the axis OO of the vehicle body 1 is formed as a warning sign on the front part of the vehicle body. The light emitting device 2 is not necessarily limited to the laser light emitting device, and an LED, an incandescent light bulb, or the like can be used.

  This light projection image Pi is, for example, a red light emission projection image. As shown in FIG. 3, the pedestrian sees the projected image Pi of the light displayed in the shadow 1a of the car body 1 of the car and confirms that the driver of the car is performing the brake operation correctly. You can cross the sidewalk.

  By the way, as a matter of fact, for pedestrians who want to cross the road, whether or not the driver of the car can check whether or not the brake is being operated must be an important issue. In addition, it would be more advantageous if the driver could be provided with predictive information on what state the vehicle is currently in and what operation the driver is going to do next.

  In addition to the depression of the brake pedal, the shift lever switching operation and the side brake application operation are detected, and if a combination of the detection signals is used, a specific warning sign is selected from the prepared warning signs, The projected image of the light of the selected warning sign can be projected on the road.

FIG. 4 is an example in which a warning sign is displayed by combining the operation of the shift lever and the operation of the side lever of the transmission of an automatic vehicle with the brake operation. This embodiment includes a brake operation detection switch Bp, a shift operation detection switch Sf, a side brake operation detection switch Sd, a controller 5, and a light emitting device 2.

  The brake operation detection switch Bp operates when the brake pedal 3 is depressed, and outputs a brake operation signal to the controller 5. The shift operation detection switch Sf individually detects the position of a specific range selected by operating the shift lever 6 and outputs a position selection signal for the selected range to the controller 5. Further, the side brake operation detection switch Sd detects the application or release of the side brake 7 and outputs a side brake application detection signal to the controller 5.

  The controller 5 determines the degree of danger from the combination of the input brake operation signal, the range position selection signal, and the side brake application detection signal, and selects a light emission color selected from a plurality of light emission colors set in advance. Is output to the light emitting device 2, and the light emitting device 2 receives the input of the determination signal from the controller 5, emits diffused light of the selected emission color over a certain range of the front of the vehicle body according to the content of the determination signal, A light projection image Pi is formed as a warning sign on the road within the shadow of the vehicle body.

  In FIG. 4, the light emitting device 2 installed on the lower surface of the front portion of the vehicle body 1 of the automobile is connected to a power source 4, and the power source circuit of the light emitting device 2 is operated by a controller 5 and a brake operation detection that operates by depressing operation of the brake pedal 3. A switch Bp, a shift operation detection switch Sf that is switched by operating the shift lever 6, and a side brake operation detection switch Sd that is operated by the side brake 7 are connected.

  The shift operation detection switch Sf is a switch such as a parking range detection switch Sp, a reverse range detection switch Sr, a neutral range detection switch Sn, and a drive range detection switch Sd that are switched by the operation of the shift lever 6 in the case of an automatic vehicle. It is configured.

As a precaution, the position of the range that can be switched by operating the shift lever 6 will be described as follows.
Parking range (P) ・ ・ ・ Position when parking the car,
Reverse range (R) ... Position when driving the car back
Neutral range (N): Position to cut off torque from the engine and tires to the drive train,
Drive range (D) ・ ・ ・ Position when driving a car normally,
The shift operation detection switch Sf that is switched by operating the shift lever is operated by switching the (P), (R), (N), and (D) ranges. (P) Range detection switch Sp, (R) range Detection switch Sr, (N) range detection switch Sn, (D) range detection switch Sd.

  In this example, for easy understanding, the wiring of the brake operation detection switch Bp is connected to the connection of the (P) range detection switch Sp, the connection of the (R) range detection switch Sr, and the (N) range detection switch. The example which wired in parallel the connection of Sn and the connection of the detection switch Sd of (D) range is shown. Since the shift lever 6 is switched by the driver's operation, when a specific switch is operated and the contact is closed, the contact of any other switch is opened, and two or more contacts are not closed at the same time. .

  The side brake operation detection switch Sd is a side brake application detection switch Sd1 that operates when the side brake 7 is applied, and a side brake release detection switch Sd2 that detects that the side brake operation has been released. The side brake application detection switch Sd1 is indicated by a normally open upper contact (normally open contact), and the side brake release detection switch Sd2 is indicated by a normally closed upper contact (normally closed contact). The side brake application detection switch Sd1 and the side brake release detection switch Sd2 are wired in parallel, and the parallel wiring is connected to the parallel circuit of the shift operation detection switch Sf and the controller 5.

  The brake operation detection switch Bp, the shift operation detection switch Sf, and the side brake operation detection switch Sd are shown as contact points because the two or more switches are operated by the brake application operation, the position of the range selected by the operation of the shift lever 6, and the side This is for easy understanding of the combination of switches that detect the operation when the brake application operation is detected, and does not mean that a normally open or normally closed contact is used as the detection switch. The function of the detection switch is to detect whether or not the brake pedal 3 is depressed, whether or not the shift lever 6 is switched, and whether or not the side brake 7 is applied, and each detection signal is output to the controller 5 individually.

  Therefore, the detection signals of the brake operation detection switch Bp, the shift operation detection switch Sf (Sp, Sr, Sn, Sd) and the side brake operation detection switch Sd (Sd1, Sd2) are individually input to the controller 5, The controller 5 determines the degree of danger from the combination of the input signals, and a determination signal for the emission color selected from a plurality of preset emission colors is output to the light emitting device 2 as a warning sign display command. The light emitting device 2 emits diffused light of a light emission color selected over a certain range of the front part of the vehicle body according to the content of the determination signal, and the projected image Pi of light as a warning sign on the road within the shadow range of the vehicle body 1 Is formed as described above.

  The following shows a judgment example of a warning sign issued by a combination of detection signals of the brake operation detection switch Bp, the shift operation detection switch Sf (Sp, Sr, Sn, Sd) and the side brake operation detection switch Sd (Sd1, Sd2). .

(Example 1) When the brake operation detection switch Bp is ON, the shift operation detection switch Sf (Sd) is ON, and the side brake operation detection switch Sd (Sd1 is Off, Sd2 is ON)

  At this time, the brake pedal 3 is depressed and the brake is applied, but the shift lever 6 is put into the drive position and the side brake 7 is not applied. This applies in most cases when the car stops before an intersection or pedestrian crossing while driving, or when it stops at a temporary stop line, or when it stops to avoid danger. In this state, when the brake pedal 3 is released, the vehicle can go straight immediately. The controller 5 determines that this state is “Needs attention” and outputs a “caution” command to the light emitting device 2, and the light emitting device 2 uses the projected image Pi of red light as a warning sign to the shadow of the vehicle body 1. Project.

(Example 2) When the brake operation detection switch Bp is ON, the shift operation detection switch Sf (Sp) is ON, and the side brake operation detection switch Sd (Sd1 is ON, Sd2 is Off).

  At this time, as long as “parking” is selected for the shift lever 6 and the side brake 7 is applied, the controller 5 determines that this state is “safe” and “safe” because the car should stop. ”Is output to the light emitting device 2, and the light emitting device 2 projects a projected color Pi, such as white light or blue light, which prompts attention as a warning sign, onto the shadow of the vehicle body 1.

(Example 3) When the brake operation detection switch Bp is ON, the shift operation detection switch Sf (Sp) is ON, and the side brake operation detection switch Sd (Sd1 is OFF, Sd2 is ON).

  In this example, the side brake 7 is released from the state of (Example 2). Since this state is assumed to be about to start, the controller 5 determines that this state is “careful” and outputs an “emergency caution” command to the light emitting device 2. For example, a red flashing projection image Pi for emergency attention is projected onto the shadow of the vehicle body 1 as a call sign.

(Example 4) When the brake operation detection switch Bp is ON, the shift operation detection switch Sf (Sn) or (Sr) is ON, and the side brake operation detection switch Sd (Sd1 is ON, Sd2 is Off).

  The brake pedal 7 is depressed, the shift lever 6 is in a state where the neutral range or reverse range is selected and the side brake 7 is applied. In this state, the car is unlikely to start forward for the time being, so the controller 5 determines this state as “safe” and outputs a “safe” command to the light emitting device 2, and the light emitting device 2 is careful. A projection color Pi, for example, a white or blue light that prompts attention, is projected onto the shadow of the vehicle body 1 as an urgent sign.

(Example 5) When the side brake 7 is released while the shift operation detection switch Sf (Sr) is ON, it is determined that the driver intends to drive the vehicle backward. In order to call attention to pedestrians crossing the rear of the car, a light emitting device is also provided on both sides and the rear of the car body as necessary, and emergency attention is given as a warning sign from the light emitting device. It is also possible to project the projected image of red flashing on the shadow of the vehicle body.

The combination of detection signals of the brake operation detection switch Bp, the shift operation detection switch Sf (Sp, Sr, Sn, Sd) and the side brake operation detection switch Sd (Sd1, Sd2) is not limited to the above-described example of alerting determination. Thus, various information for predicting the behavior of various drivers can be generated to provide walking information to the pedestrian. The projection image of each operating light can be projected by combining not only the color of light but also characters, figures, patterns, symbols, and the like.
In any of the above cases, when the depression of the brake pedal 3 is stopped, the projection of the projection image Pi as a warning sign from the light emitting device 2 stops.

  According to the present invention, the projected image Pi of the light irradiated directly from the light emitting device 2 as a warning sign is reflected in the rear-view mirror 8 of the automobile traveling immediately before as shown in FIG. It can be easily determined from the projected image Pi projected on the room mirror 8 whether the vehicle is slowing down or is about to stop.

  As described above, according to the present invention, the operation signal of the brake operation detection switch Bp is used as a warning sign, the shift operation detection switch Sf (Sp, Sr, Sn, Sd) and the side brake operation detection switch Sd (Sd1, Sd2). ) Can be predicted from a warning sign emitted from the light-emitting device. Although the example applied to the automatic vehicle has been described in the above embodiment, it can be applied to a manual vehicle.

  By making pedestrians clearly recognize that pedestrians are stepping on the brake pedal by pedestrians crossing the front and rear of the vehicle, pedestrians can be provided with information on when the vehicle is stopped and pedestrian safety Can be prevented, and as a result, the occurrence of personal injury can be prevented.

1 body, 1a shadow, 2 light emitting device, 3 brake pedal, 4 power supply, 5 controller, 6 shift lever, 7 side brake, 8 room mirror, Pi projection image, Bp brake operation detection switch, Sf shift operation detection switch, Sd side Brake operation detection switch, Sp parking range detection switch, Sr reverse range detection switch, Sn neutral range detection switch, Sd drive range detection switch, Sd1 side brake application detection switch, Sd2 side brake release detection switch,

The present invention relates to the operating state display equipment of a motor vehicle brakes.

When the brake pedal 3 is depressed and the brake is applied, in the example of FIG. 2, the brake operation detection switch Bp is dropped to close the contact, power is supplied to the light emitting device 2, and a warning sign is directed directly from the light emitting device 2. As a result , a light projection image Pi (Projection image) is irradiated on the front lower surface of the vehicle body 1 of the automobile .

Claims (3)

When the brake pedal is depressed, diffused light is emitted from a light emitting device installed on the underside of the front of the car body over a certain range of the front of the car body, and a projected image of light is formed as a warning sign on the road within the shadow of the car body A method for displaying an operating state of a brake of an automobile. An operation state display device for an automobile brake having a brake operation detection switch and a light emitting device,
The brake operation detection switch operates when the brake pedal is depressed, and outputs a brake operation signal to the light emitting device.
The light emitting device is installed on the underside of the front part of the car body of the car, receives the brake operation signal, emits diffused light over a certain range of the front part of the car body, and projects light as a warning sign on the road within the shadow of the car body An apparatus for displaying an operating state of an automobile brake, characterized in that it forms an image. A brake operation state display device for a vehicle having a brake operation detection switch, a shift operation detection switch, a side brake operation detection switch, a controller, and a light emitting device,
The brake operation detection switch operates when the brake pedal is depressed and outputs a brake operation signal to the controller.
The shift operation detection switch individually detects the position of a specific range selected by operating the shift lever and outputs a position selection signal of the selected range to the controller.
The side brake operation detection switch detects whether the side brake is applied or released and outputs a side brake application detection signal to the controller individually.
The controller determines the degree of danger from the combination of the input brake operation signal, range position selection signal, and side brake application detection signal, and selects the emission color selected from the preset emission colors. The judgment signal is output to the light emitting device.
The light emitting device is installed on the lower surface of the front of the car body of the automobile, receives a determination signal from the controller, emits diffused light of a selected emission color over a certain range of the front of the car body according to the content of the determination signal, An apparatus for displaying an operating state of a brake of an automobile, characterized in that it forms a projected image of light of a light emission color selected as a warning sign on a road within a shadow range.

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